Add debug statements

Also rebuild shiny.js

.github/workflows/R-CMD-check.yaml

@@ -0,0 +1,198 @@
+name: R-CMD-check
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+
+jobs:
+
+  R-CMD-check:
+    runs-on: ${{ matrix.config.os }}
+
+    name: ${{ matrix.config.os }} (${{ matrix.config.r }})
+
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - {os: macOS-latest,   r: 'devel'}
+          - {os: macOS-latest,   r: '4.0'}
+          - {os: windows-latest, r: '4.0'}
+          - {os: ubuntu-16.04,   r: '4.0', rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
+          - {os: ubuntu-16.04,   r: '3.6', rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
+          - {os: ubuntu-16.04,   r: '3.5', rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
+          - {os: ubuntu-16.04,   r: '3.4', rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
+          - {os: ubuntu-16.04,   r: '3.3', rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
+
+    env:
+      _R_CHECK_FORCE_SUGGESTS_: false
+      R_REMOTES_NO_ERRORS_FROM_WARNINGS: true
+      RSPM: ${{ matrix.config.rspm }}
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+
+    steps:
+      # https://github.com/actions/checkout/issues/135
+      - name: Set git to use LF
+        if: runner.os == 'Windows'
+        run: |
+          git config --system core.autocrlf false
+          git config --system core.eol lf
+
+      - uses: actions/checkout@v2
+
+      - uses: r-lib/actions/setup-r@master
+        with:
+          r-version: ${{ matrix.config.r }}
+
+      - uses: r-lib/actions/setup-pandoc@master
+
+      - name: Query dependencies
+        run: |
+          install.packages('remotes')
+          saveRDS(remotes::dev_package_deps(dependencies = TRUE), ".github/depends.Rds", version = 2)
+        shell: Rscript {0}
+
+      - name: Cache R packages
+        if: runner.os != 'Windows'
+        uses: actions/cache@v1
+        with:
+          path: ${{ env.R_LIBS_USER }}
+          key: ${{ matrix.config.os }}-r-${{ matrix.config.r }}-1-${{ hashFiles('.github/depends.Rds') }}
+          restore-keys: ${{ matrix.config.os }}-r-${{ matrix.config.r }}-1-
+
+      - name: Install system dependencies
+        if: runner.os == 'Linux'
+        env:
+          RHUB_PLATFORM: linux-x86_64-ubuntu-gcc
+        run: |
+          Rscript -e "remotes::install_github('r-hub/sysreqs')"
+          sysreqs=$(Rscript -e "cat(sysreqs::sysreq_commands('DESCRIPTION'))")
+          sudo -s eval "$sysreqs"
+
+      - name: Install dependencies
+        run: |
+          remotes::install_deps(dependencies = TRUE)
+          remotes::install_cran("rcmdcheck")
+        shell: Rscript {0}
+
+      - name: Find PhantomJS path
+        id: phantomjs
+        run: |
+          echo "::set-output name=path::$(Rscript -e 'cat(shinytest:::phantom_paths()[[1]])')"
+      - name: Cache PhantomJS
+        uses: actions/cache@v1
+        with:
+          path: ${{ steps.phantomjs.outputs.path }}
+          key: ${{ runner.os }}-phantomjs
+          restore-keys: ${{ runner.os }}-phantomjs
+      - name: Install PhantomJS
+        run: >
+          Rscript
+          -e "if (!shinytest::dependenciesInstalled()) shinytest::installDependencies()"
+
+      - name: Session info
+        run: |
+          options(width = 100)
+          pkgs <- installed.packages()[, "Package"]
+          sessioninfo::session_info(pkgs, include_base = TRUE)
+        shell: Rscript {0}
+
+      - name: Check
+        env:
+          _R_CHECK_CRAN_INCOMING_: false
+        run: rcmdcheck::rcmdcheck(args = c("--no-manual", "--as-cran"), error_on = "warning", check_dir = "check")
+        shell: Rscript {0}
+
+      - name: Show testthat output
+        if: always()
+        run: find check -name 'testthat.Rout*' -exec cat '{}' \; || true
+        shell: bash
+
+      - name: Upload check results
+        if: failure()
+        uses: actions/upload-artifact@v2
+        with:
+          name: ${{ runner.os }}-r${{ matrix.config.r }}-results
+          path: check
+
+
+  documentation:
+    runs-on: ${{ matrix.config.os }}
+    name: documentation
+
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - {os: macOS-latest, r: '4.0'}
+
+    env:
+      R_REMOTES_NO_ERRORS_FROM_WARNINGS: true
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: r-lib/actions/setup-r@master
+        with:
+          r-version: ${{ matrix.config.r }}
+
+      - name: Query dependencies
+        run: |
+          install.packages('remotes')
+          saveRDS(remotes::dev_package_deps(dependencies = TRUE), ".github/depends.Rds", version = 2)
+        shell: Rscript {0}
+      - name: Cache R packages
+        uses: actions/cache@v1
+        with:
+          path: ${{ env.R_LIBS_USER }}
+          key: ${{ matrix.config.os }}-r-${{ matrix.config.r }}-2-${{ hashFiles('.github/depends.Rds') }}
+          restore-keys: ${{ matrix.config.os }}-r-${{ matrix.config.r }}-2-
+      - name: Remove dependencies file
+        run: |
+          rm .github/depends.Rds
+
+      - name: Install dependencies
+        run: |
+          install.packages(c("remotes"))
+          remotes::install_deps(dependencies = TRUE)
+          remotes::install_cran("devtools")
+          remotes::install_cran("rprojroot")
+        shell: Rscript {0}
+
+      - name: Check documentation
+        run: |
+          ./tools/documentation/checkDocsCurrent.sh
+
+
+  node_js:
+    runs-on: macOS-latest
+    name: node_js
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-node@v1
+        with:
+          node-version: '12.x'
+
+      # https://github.com/actions/cache/blame/ccf96194800dbb7b7094edcd5a7cf3ec3c270f10/examples.md#L185-L200
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "::set-output name=dir::$(yarn cache dir)"
+      - name: yarn cache
+        uses: actions/cache@v1
+        id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
+        with:
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
+
+      - name: Check node build
+        run: |
+          ./tools/checkJSCurrent.sh

.github/workflows/pr-commands.yaml

@@ -0,0 +1,35 @@
+on:
+  issue_comment:
+    types: [created]
+name: Commands
+jobs:
+  document:
+    if: startsWith(github.event.comment.body, '/document')
+    name: document
+    runs-on: macOS-latest
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - uses: actions/checkout@v2
+      - uses: r-lib/actions/pr-fetch@master
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+      - uses: r-lib/actions/setup-r@master
+      - name: Install dependencies
+        run: Rscript -e 'install.packages(c("remotes", "roxygen2"))' -e 'remotes::install_deps(dependencies = TRUE)'
+      - name: Document
+        run: Rscript -e 'roxygen2::roxygenise()'
+      - name: commit
+        run: |
+          git add man/\* NAMESPACE
+          git commit -m 'Document'
+      - uses: r-lib/actions/pr-push@master
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+
+  # added so that the workflow doesn't fail.
+  always_runner:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Always run
+        run: echo "This job is used to prevent the workflow status from showing as failed when all other jobs are skipped"

.travis.yml

@@ -1,28 +0,0 @@
-language: r
-matrix:
-  include:
-    - name: "Roxygen check"
-      r: release
-      r_packages:
-        - devtools
-        - rprojroot
-      script: ./tools/checkDocsCurrent.sh
-    - name: "Javascript check"
-      language: node_js
-      cache: yarn
-      script: ./tools/checkJSCurrent.sh
-      node_js:
-        - "12"
-    - r: 3.2
-    - r: 3.3
-    - r: 3.4
-    - r: 3.5
-    - r: release
-    - r: devel
-
-sudo: false
-cache: packages
-notifications:
-  email:
-    on_success: change
-    on_failure: change

DESCRIPTION

@@ -1,13 +1,18 @@
 Package: shiny
 Type: Package
 Title: Web Application Framework for R
-Version: 1.4.0.9002
+Version: 1.5.0.9004
 Authors@R: c(
     person("Winston", "Chang", role = c("aut", "cre"), email = "winston@rstudio.com"),
     person("Joe", "Cheng", role = "aut", email = "joe@rstudio.com"),
     person("JJ", "Allaire", role = "aut", email = "jj@rstudio.com"),
+    person("Carson", "Sievert", role = "aut", email = "carson@rstudio.com"),
+    person("Barret", "Schloerke", role = "aut", email = "barret@rstudio.com"),
     person("Yihui", "Xie", role = "aut", email = "yihui@rstudio.com"),
+    person("Jeff", "Allen", role = "aut", email = "jeff@rstudio.com"),
     person("Jonathan", "McPherson", role = "aut", email = "jonathan@rstudio.com"),
+    person("Alan", "Dipert", role = "aut"),
+    person("Barbara", "Borges", role = "aut"),
     person(family = "RStudio", role = "cph"),
     person(family = "jQuery Foundation", role = "cph",
     comment = "jQuery library and jQuery UI library"),
@@ -23,10 +28,18 @@ Authors@R: c(
     comment = "Bootstrap library"),
     person(family = "Twitter, Inc", role = "cph",
     comment = "Bootstrap library"),
-    person("Alexander", "Farkas", role = c("ctb", "cph"),
-    comment = "html5shiv library"),
-    person("Scott", "Jehl", role = c("ctb", "cph"),
-    comment = "Respond.js library"),
+    person("Prem Nawaz", "Khan", role = "ctb",
+    comment = "Bootstrap accessibility plugin"),
+    person("Victor", "Tsaran", role = "ctb",
+    comment = "Bootstrap accessibility plugin"),
+    person("Dennis", "Lembree", role = "ctb",
+    comment = "Bootstrap accessibility plugin"),
+    person("Srinivasu", "Chakravarthula", role = "ctb",
+    comment = "Bootstrap accessibility plugin"),
+    person("Cathy", "O'Connor", role = "ctb",
+    comment = "Bootstrap accessibility plugin"),
+    person(family = "PayPal, Inc", role = "cph",
+    comment = "Bootstrap accessibility plugin"),
     person("Stefan", "Petre", role = c("ctb", "cph"),
     comment = "Bootstrap-datepicker library"),
     person("Andrew", "Rowls", role = c("ctb", "cph"),
@@ -35,10 +48,8 @@ Authors@R: c(
     comment = "Font-Awesome font"),
     person("Brian", "Reavis", role = c("ctb", "cph"),
     comment = "selectize.js library"),
-    person("Kristopher Michael", "Kowal", role = c("ctb", "cph"),
-    comment = "es5-shim library"),
-    person(family = "es5-shim contributors", role = c("ctb", "cph"),
-    comment = "es5-shim library"),
+    person("Salmen", "Bejaoui", role = c("ctb", "cph"),
+    comment = "selectize-plugin-a11y library"),
     person("Denis", "Ineshin", role = c("ctb", "cph"),
     comment = "ion.rangeSlider library"),
     person("Sami", "Samhuri", role = c("ctb", "cph"),
@@ -70,7 +81,7 @@ Imports:
     jsonlite (>= 0.9.16),
     xtable,
     digest,
-    htmltools (>= 0.4.0.9001),
+    htmltools (>= 0.5.0.9001),
     R6 (>= 2.0),
     sourcetools,
     later (>= 1.0.0),
@@ -79,7 +90,10 @@ Imports:
     crayon,
     rlang (>= 0.4.0),
     fastmap (>= 1.0.0),
-    withr
+    withr,
+    commonmark (>= 1.7),
+    glue (>= 1.3.2),
+    bootstraplib (>= 0.2.0.9001)
 Suggests:
     datasets,
     Cairo (>= 1.5-5),
@@ -93,24 +107,29 @@ Suggests:
     shinytest,
     yaml,
     future,
-    dygraphs
+    dygraphs,
+    ragg,
+    showtext,
+    sass
 Remotes:
-    rstudio/htmltools
+    rstudio/htmltools,
+    rstudio/sass,
+    rstudio/bootstraplib
 URL: http://shiny.rstudio.com
 BugReports: https://github.com/rstudio/shiny/issues
 Collate:
-    'app.R'
+    'globals.R'
+    'app-state.R'
+    'app_template.R'
     'bookmark-state-local.R'
     'stack.R'
     'bookmark-state.R'
     'bootstrap-deprecated.R'
     'bootstrap-layout.R'
-    'globals.R'
     'conditions.R'
     'map.R'
     'utils.R'
     'bootstrap.R'
-    'cache-context.R'
     'cache-disk.R'
     'cache-memory.R'
     'cache-utils.R'
@@ -145,9 +164,11 @@ Collate:
     'insert-tab.R'
     'insert-ui.R'
     'jqueryui.R'
+    'knitr.R'
     'middleware-shiny.R'
     'middleware.R'
     'timer.R'
+    'shiny.R'
     'mock-session.R'
     'modal.R'
     'modules.R'
@@ -155,24 +176,28 @@ Collate:
     'priorityqueue.R'
     'progress.R'
     'react.R'
+    'reexports.R'
     'render-cached-plot.R'
     'render-plot.R'
     'render-table.R'
     'run-url.R'
+    'runapp.R'
     'serializers.R'
     'server-input-handlers.R'
+    'server-resource-paths.R'
     'server.R'
     'shiny-options.R'
-    'shiny.R'
+    'shinyapp.R'
     'shinyui.R'
     'shinywrappers.R'
     'showcase.R'
     'snapshot.R'
     'tar.R'
     'test-export.R'
-    'test-module.R'
+    'test-server.R'
     'test.R'
     'update-input.R'
-RoxygenNote: 7.0.2
+    'viewer.R'
+RoxygenNote: 7.1.1
 Encoding: UTF-8
 Roxygen: list(markdown = TRUE)

LICENSE

@@ -8,12 +8,11 @@ these components are included below):
 - jQuery, https://github.com/jquery/jquery
 - jQuery UI (some components), https://github.com/jquery/jquery-ui
 - Bootstrap, https://github.com/twbs/bootstrap
-- html5shiv, https://github.com/aFarkas/html5shiv
-- Respond.js, https://github.com/scottjehl/Respond
+- bootstrap-accessibility-plugin, https://github.com/paypal/bootstrap-accessibility-plugin
 - bootstrap-datepicker, https://github.com/eternicode/bootstrap-datepicker
 - Font Awesome, https://github.com/FortAwesome/Font-Awesome
 - selectize.js, https://github.com/selectize/selectize.js
-- es5-shim, https://github.com/es-shims/es5-shim
+- selectize-plugin-a11y, https://github.com/SLMNBJ/selectize-plugin-a11y
 - ion.rangeSlider, https://github.com/IonDen/ion.rangeSlider
 - strftime for Javascript, https://github.com/samsonjs/strftime
 - DataTables, https://github.com/DataTables/DataTables
@@ -72,399 +71,35 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 
 
-html5shiv License (MIT and GPL-2)
+bootstrap-accessibility-plugin (BSD-3-Clause License)
 ----------------------------------------------------------------------
-Copyright (c) 2014 Alexander Farkas (aFarkas).
-
- Licensed under MIT
-
- Permission is hereby granted, free of charge, to any person obtaining a
- copy of this software and associated documentation files (the "Software"),
- to deal in the Software without restriction, including without limitation
- the rights to use, copy, modify, merge, publish, distribute, sublicense,
- and/or sell copies of the Software, and to permit persons to whom the
- Software is furnished to do so, subject to the following conditions:
-
- The above copyright notice and this permission notice shall be included in
- all copies or substantial portions of the Software.
-
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- DEALINGS IN THE SOFTWARE.
-
-
-        GNU GENERAL PUBLIC LICENSE
-           Version 2, June 1991
-
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.
-                       59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-          Preamble
-
-  The licenses for most software are designed to take away your
-freedom to share and change it.  By contrast, the GNU General Public
-License is intended to guarantee your freedom to share and change free
-software--to make sure the software is free for all its users.  This
-General Public License applies to most of the Free Software
-Foundation's software and to any other program whose authors commit to
-using it.  (Some other Free Software Foundation software is covered by
-the GNU Library General Public License instead.)  You can apply it to
-your programs, too.
-
-  When we speak of free software, we are referring to freedom, not
-price.  Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-this service if you wish), that you receive source code or can get it
-if you want it, that you can change the software or use pieces of it
-in new free programs; and that you know you can do these things.
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-  To protect your rights, we need to make restrictions that forbid
-anyone to deny you these rights or to ask you to surrender the rights.
-These restrictions translate to certain responsibilities for you if you
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-that everyone understands that there is no warranty for this free
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-  4. You may not copy, modify, sublicense, or distribute the Program
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-  6. Each time you redistribute the Program (or any work based on the
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-these terms and conditions.  You may not impose any further
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-You are not responsible for enforcing compliance by third parties to
-this License.
-
-  7. If, as a consequence of a court judgment or allegation of patent
-infringement or for any other reason (not limited to patent issues),
-conditions are imposed on you (whether by court order, agreement or
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-excuse you from the conditions of this License.  If you cannot
-distribute so as to satisfy simultaneously your obligations under this
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-may not distribute the Program at all.  For example, if a patent
-license would not permit royalty-free redistribution of the Program by
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-patents or other property right claims or to contest validity of any
-such claims; this section has the sole purpose of protecting the
-integrity of the free software distribution system, which is
-implemented by public license practices.  Many people have made
-generous contributions to the wide range of software distributed
-through that system in reliance on consistent application of that
-system; it is up to the author/donor to decide if he or she is willing
-to distribute software through any other system and a licensee cannot
-impose that choice.
-
-This section is intended to make thoroughly clear what is believed to
-be a consequence of the rest of this License.
-
-  8. If the distribution and/or use of the Program is restricted in
-certain countries either by patents or by copyrighted interfaces, the
-original copyright holder who places the Program under this License
-may add an explicit geographical distribution limitation excluding
-those countries, so that distribution is permitted only in or among
-countries not thus excluded.  In such case, this License incorporates
-the limitation as if written in the body of this License.
-
-  9. The Free Software Foundation may publish revised and/or new versions
-of the General Public License from time to time.  Such new versions will
-be similar in spirit to the present version, but may differ in detail to
-address new problems or concerns.
-
-Each version is given a distinguishing version number.  If the Program
-specifies a version number of this License which applies to it and "any
-later version", you have the option of following the terms and conditions
-either of that version or of any later version published by the Free
-Software Foundation.  If the Program does not specify a version number of
-this License, you may choose any version ever published by the Free Software
-Foundation.
-
-  10. If you wish to incorporate parts of the Program into other free
-programs whose distribution conditions are different, write to the author
-to ask for permission.  For software which is copyrighted by the Free
-Software Foundation, write to the Free Software Foundation; we sometimes
-make exceptions for this.  Our decision will be guided by the two goals
-of preserving the free status of all derivatives of our free software and
-of promoting the sharing and reuse of software generally.
-
-          NO WARRANTY
-
-  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
-FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
-OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
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-OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
-TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
-PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
-REPAIR OR CORRECTION.
-
-  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
-REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
-OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
-TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
-YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
-PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGES.
-
-         END OF TERMS AND CONDITIONS
-
-      How to Apply These Terms to Your New Programs
-
-  If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these terms.
-
-  To do so, attach the following notices to the program.  It is safest
-to attach them to the start of each source file to most effectively
-convey the exclusion of warranty; and each file should have at least
-the "copyright" line and a pointer to where the full notice is found.
-
-    <Html5shiv, The HTML5 Shiv enables use of HTML5 sectioning elements in
-    legacy Internet Explorer and provides basic HTML5 styling for Internet Explorer 6-9,
-    Safari 4.x (and iPhone 3.x), and Firefox 3.x.>
-    Copyright (C) 2014  Alexander Farkas (aFarkas)
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-
-
-Also add information on how to contact you by electronic and paper mail.
-
-If the program is interactive, make it output a short notice like this
-when it starts in an interactive mode:
-
-    Gnomovision version 69, Copyright (C) 2014  Alexander Farkas (aFarkas)
-    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
-    This is free software, and you are welcome to redistribute it
-    under certain conditions; type `show c' for details.
-
-The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License.  Of course, the commands you use may
-be called something other than `show w' and `show c'; they could even be
-mouse-clicks or menu items--whatever suits your program.
-
-You should also get your employer (if you work as a programmer) or your
-school, if any, to sign a "copyright disclaimer" for the program, if
-necessary.  Here is a sample; alter the names:
-
-  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
-  `Gnomovision' (which makes passes at compilers) written by James Hacker.
-
-  <signature of Ty Coon>, 1 April 1989
-  Ty Coon, President of Vice
-
-This General Public License does not permit incorporating your program into
-proprietary programs.  If your program is a subroutine library, you may
-consider it more useful to permit linking proprietary applications with the
-library.  If this is what you want to do, use the GNU Library General
-Public License instead of this License.
-
-
-Respond.js License
-----------------------------------------------------------------------
-Copyright (c) 2012 Scott Jehl
-
-Permission is hereby granted, free of charge, to any person
-obtaining a copy of this software and associated documentation
-files (the "Software"), to deal in the Software without
-restriction, including without limitation the rights to use,
-copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the
-Software is furnished to do so, subject to the following
-conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
-HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-OTHER DEALINGS IN THE SOFTWARE.
+Copyright (c) 2014, PayPal
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice, this
+  list of conditions and the following disclaimer in the documentation and/or
+  other materials provided with the distribution.
+
+* Neither the name of the PayPal nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 
 bootstrap-datepicker
@@ -1322,30 +957,18 @@ selectize.js
    limitations under the License.
 
 
-es5-shim License
+selectize-plugin-a11y License
 ----------------------------------------------------------------------
 
 The MIT License (MIT)
 
-Copyright (C) 2009-2014 Kristopher Michael Kowal and contributors
+Copyright 2018-present Salmen Bejaoui
 
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 
 ion.rangeSlider License

NAMESPACE

@@ -32,6 +32,7 @@ S3method(print,reactive)
 S3method(print,reactivevalues)
 S3method(print,shiny.appobj)
 S3method(print,shiny.render.function)
+S3method(print,shiny_runtests)
 S3method(str,reactivevalues)
 export("conditionStackTrace<-")
 export(..stacktraceoff..)
@@ -98,6 +99,7 @@ export(formatStackTrace)
 export(freezeReactiveVal)
 export(freezeReactiveValue)
 export(getCurrentOutputInfo)
+export(getCurrentTheme)
 export(getDefaultReactiveDomain)
 export(getQueryString)
 export(getShinyOption)
@@ -115,6 +117,7 @@ export(hoverOpts)
 export(hr)
 export(htmlOutput)
 export(htmlTemplate)
+export(httpResponse)
 export(icon)
 export(imageOutput)
 export(img)
@@ -142,6 +145,7 @@ export(loadSupport)
 export(mainPanel)
 export(makeReactiveBinding)
 export(markRenderFunction)
+export(markdown)
 export(maskReactiveContext)
 export(memoryCache)
 export(modalButton)
@@ -179,6 +183,7 @@ export(printError)
 export(printStackTrace)
 export(radioButtons)
 export(reactive)
+export(reactiveConsole)
 export(reactiveFileReader)
 export(reactivePlot)
 export(reactivePoll)
@@ -194,6 +199,7 @@ export(reactlog)
 export(reactlogReset)
 export(reactlogShow)
 export(registerInputHandler)
+export(registerThemeDependency)
 export(removeInputHandler)
 export(removeModal)
 export(removeNotification)
@@ -229,6 +235,7 @@ export(setSerializer)
 export(shinyApp)
 export(shinyAppDir)
 export(shinyAppFile)
+export(shinyAppTemplate)
 export(shinyOptions)
 export(shinyServer)
 export(shinyUI)
@@ -252,6 +259,7 @@ export(strong)
 export(submitButton)
 export(suppressDependencies)
 export(tabPanel)
+export(tabPanelBody)
 export(tableOutput)
 export(tabsetPanel)
 export(tag)
@@ -263,7 +271,6 @@ export(tagHasAttribute)
 export(tagList)
 export(tagSetChildren)
 export(tags)
-export(testModule)
 export(testServer)
 export(textAreaInput)
 export(textInput)
@@ -272,6 +279,7 @@ export(throttle)
 export(titlePanel)
 export(uiOutput)
 export(updateActionButton)
+export(updateActionLink)
 export(updateCheckboxGroupInput)
 export(updateCheckboxInput)
 export(updateDateInput)
@@ -314,6 +322,43 @@ importFrom(fastmap,is.key_missing)
 importFrom(fastmap,key_missing)
 importFrom(grDevices,dev.cur)
 importFrom(grDevices,dev.set)
+importFrom(htmltools,HTML)
+importFrom(htmltools,a)
+importFrom(htmltools,br)
+importFrom(htmltools,code)
+importFrom(htmltools,div)
+importFrom(htmltools,em)
+importFrom(htmltools,h1)
+importFrom(htmltools,h2)
+importFrom(htmltools,h3)
+importFrom(htmltools,h4)
+importFrom(htmltools,h5)
+importFrom(htmltools,h6)
+importFrom(htmltools,hr)
+importFrom(htmltools,htmlTemplate)
+importFrom(htmltools,img)
+importFrom(htmltools,includeCSS)
+importFrom(htmltools,includeHTML)
+importFrom(htmltools,includeMarkdown)
+importFrom(htmltools,includeScript)
+importFrom(htmltools,includeText)
+importFrom(htmltools,is.singleton)
+importFrom(htmltools,p)
+importFrom(htmltools,pre)
+importFrom(htmltools,singleton)
+importFrom(htmltools,span)
+importFrom(htmltools,strong)
+importFrom(htmltools,suppressDependencies)
+importFrom(htmltools,tag)
+importFrom(htmltools,tagAppendAttributes)
+importFrom(htmltools,tagAppendChild)
+importFrom(htmltools,tagAppendChildren)
+importFrom(htmltools,tagGetAttribute)
+importFrom(htmltools,tagHasAttribute)
+importFrom(htmltools,tagList)
+importFrom(htmltools,tagSetChildren)
+importFrom(htmltools,tags)
+importFrom(htmltools,validateCssUnit)
+importFrom(htmltools,withTags)
 importFrom(promises,"%...!%")
 importFrom(promises,"%...>%")
-importFrom(withr,with_options)

NEWS.md

@@ -1,32 +1,145 @@
-shiny 1.4.0.9001
+
+shiny 1.5.0.9000
+================
+
+## Full changelog
+
+### Breaking changes
+
+* Closed #3074: Shiny no longer supports file uploads for Internet Explorer 8 or 9. (#3075)
+
+* Subtle changes, and some soft-deprecations, have come to `freezeReactiveValue` and `freezeReactiveVal` (#3055). These functions have been fragile at best in previous releases (issues #1791, #2463, #2946). In this release, we've solved all the problems we know about with `freezeReactiveValue(input, "x")`, by 1) invalidating `input$x` and set it to `NULL` whenever we freeze, and 2) ensuring that, after a freeze, even if the effect of `renderUI` or `updateXXXInput` is to set `input$x` to the same value it already has, this will result in an invalidation (whereas by default, Shiny filters out such spurious assignments).
+
+  Similar problems may exist when using `freezeReactiveVal`, and when using `freezeReactiveValue` with non-`input` reactive values objects. But support for those was added mostly for symmetry with `freezeReactiveValue(input)`, and given the above issues, it's not clear to us how you could have used these successfully in the past, or why you would even want to. For this release, we're soft-deprecating both of those uses, but we're more than willing to un-deprecate if it turns out people are using these; if that includes you, please join the conversation at https://github.com/rstudio/shiny/issues/3063. In the meantime, you can squelch the deprecation messages for these functions specifically, by setting `options(shiny.deprecation.messages.freeze = FALSE)`.
+
+### Accessibility
+
+* Added [bootstrap accessibility plugin](https://github.com/paypal/bootstrap-accessibility-plugin) under the hood to improve accessibility of shiny apps for screen-reader and keyboard users: the enhancements include better navigations for alert, tooltip, popover, modal dialog, dropdown, tab Panel, collapse, and carousel elements. (#2911)
+
+* Added appropriate labels to `icon()` element to provide screen-reader users with alternative descriptions for the `fontawesome` and `glyphicon`: `aria-label` is automatically applied based on the fontawesome name. For example, `icon("calendar")` will be announced as "calendar icon" to screen readers. "presentation" aria role has also been attached to `icon()` to remove redundant semantic info for screen readers. (#2917)
+
+* Closed #2929: Fixed keyboard accessibility for file picker button: keyboard users can now tab to focus on `fileInput()` widget. (#2937)
+
+* Fixed #2951: screen readers correctly announce labels and date formats for `dateInput()` and `dateRangeInput()` widgets. (#2978)
+
+* Closed #2847: `selectInput()` is reasonably accessible for screen readers even when `selectize` option is set to TRUE. To improve `selectize.js` accessibility, we have added [selectize-plugin-a11y](https://github.com/SLMNBJ/selectize-plugin-a11y) by default. (#2993)
+
+* Closed #612: Added `alt` argument to `renderPlot()` and `renderCachedPlot()` to specify descriptive texts for `plotOutput()` objects, which is essential for screen readers. By default, alt text is set to the static text, "Plot object," but even dynamic text can be made with reactive function. (#3006, thanks @trafficonese and @leonawicz for the original PR and discussion via #2494)
+
+* Added semantic landmarks for `mainPanel()` and `sidebarPanel()` so that assistive technologies can recognize them as "main" and "complementary" region respectively. (#3009)
+
+* Closed #2844: Added `lang` argument to ui `*Page()` functions (e.g., `fluidPage`, `bootstrapPage`) that specifies document-level language within the app for the accessibility of screen readers and search-engine parsers. By default, it is set to empty string which is commonly recognized as a browser's default locale. (#2920)
+
+### Minor new features and improvements
+
+* New `reactiveConsole()` makes it easier to interactively experiment with reactivity at the console (#2518).
+
+* When UI is specified as a function (e.g. `ui <- function(req) { ... }`), the response can now be an HTTP response as returned from the (newly exported) `httpResponse()` function. (#2970)
+
+* `selectInput` and `selectizeInput` now warn about performance implications when thousands of choices are used, and recommend [server-side selectize](https://shiny.rstudio.com/articles/selectize.html) be used instead. (#2959)
+
+* Closed #2980: `addResourcePath()` now allows paths with a leading `.` (thanks to @ColinFay). (#2981)
+
+* Closed #2972: `runExample()` now supports the `shiny.port` option (thanks to @ColinFay). (#2982)
+
+* Closed #2692: `downloadButton()` icon can now be changed via the `icon` parameter (thanks to @ColinFay). (#3010)
+
+* Closed #2984: improved documentation for `renderCachedPlot()` (thanks to @aalucaci). (#3016)
+
+* `reactiveValuesToList()` will save its `reactlog` label as `reactiveValuesToList(<ID>)` vs `as.list(<ID>)` (#3017)
+
+* Removed unused (and non-exported) `cacheContext` class.
+
+* `testServer()` can accept a single server function as input (#2965).
+
+* `shinyOptions()` now has session-level scoping, in addition to global and application-level scoping. (#3080)
+
+### Bug fixes
+
+* Fixed #2859: `renderPlot()` wasn't correctly setting `showtext::showtext_opts()`'s `dpi` setting with the correct resolution on high resolution displays; which means, if the font was rendered by showtext, font sizes would look smaller than they should on such displays. (#2941)
+
+* Fixed #1942: Calling `runApp("app.R")` no longer ignores options passed into `shinyApp()`. This makes it possible for Shiny apps to specify what port/host should be used by default. (#2969)
+
+* Fixed #3033: When a `DiskCache` was created with both `max_n` and `max_size`, too many items could get pruned when `prune()` was called. (#3034)
+
+* Fixed #2936: `dateYMD` was giving a warning when passed a vector of dates from `dateInput` which was greater than length 1. The length check was removed because it was not needed. (#3061)
+
+* Fixed #2266, #2688: `radioButtons` and `updateRadioButtons` now accept `character(0)` to indicate that none of the options should be selected (thanks to @ColinFay). (#3043)
+
+* Fixed a bug that `textAreaInput()` doesn't work as expected for relative `width` (thanks to @shrektan). (#2049)
+
+### Library updates
+
+* Removed html5shiv and respond.js, which were used for IE 8 and IE 9 compatibility. (#2973)
+
+* Removed es5-shim library, which was internally used within `selectInput()` for ECMAScript 5 compatibility. (#2993)
+
+
+shiny 1.5.0
 ===========
 
 ## Full changelog
 
 ### Breaking changes
 
+* Fixed #2869: Until this release, `renderImage()` had a dangerous default of `deleteFile = TRUE`. (Sorry!) Going forward, calls to `renderImage()` will need an explicit `deleteFile` argument; for now, failing to provide one will result in a warning message, and the file will be deleted if it appears to be within the `tempdir()`. (#2881)
+
 ### New features
 
-* The new `moduleServer` function provides a simpler interface for creating and using modules. ([#2773](https://github.com/rstudio/shiny/pull/2773))
+* The new `shinyAppTemplate()` function creates a new template Shiny application, where components are optional, such as helper files in an R/ subdirectory, a module, and various kinds of tests. (#2704)
+
+* `runTests()` is a new function that behaves much like R CMD check. `runTests()` invokes all of the top-level R files in the tests/ directory inside an application, in that application's environment. (#2585)
+
+* `testServer()` is a new function for testing reactive behavior inside server functions and modules. ([#2682](https://github.com/rstudio/shiny/pull/2682), [#2764](https://github.com/rstudio/shiny/pull/2764), [#2807](https://github.com/rstudio/shiny/pull/2807))
+
+* The new `moduleServer` function provides a simpler interface for creating and using modules. (#2773)
+
+* Resolved #2732: `markdown()` is a new function for writing Markdown with Github extensions directly in Shiny UIs. Markdown rendering is performed by the [commonmark](https://github.com/jeroen/commonmark) package. (#2737)
+
+* The `getCurrentOutputInfo()` function can now return the background color (`bg`), foreground color (`fg`), `accent` (i.e., hyperlink) color, and `font` information of the output's HTML container. This information is reported by `plotOutput()`, `imageOutput()`, and any other output bindings containing a class of `.shiny-report-theme`. This feature allows developers to style an output's contents based on the container's CSS styling.  (#2740)
 
 ### Minor new features and improvements
 
-* Fixed [#2042](https://github.com/rstudio/shiny/issues/2042), [#2628](https://github.com/rstudio/shiny/issues/2628): In a `dateInput` and `dateRangeInput`, disabled months and years are now a lighter gray, to make it easier to see that they are disabled. ([#2690](https://github.com/rstudio/shiny/pull/2690))
+* Fixed #2042, #2628: In a `dateInput` and `dateRangeInput`, disabled months and years are now a lighter gray, to make it easier to see that they are disabled. (#2690)
 
-* `getCurrentOutputInfo()` previously threw an error when called from outside of an output; now it returns `NULL`. ([#2707](https://github.com/rstudio/shiny/pull/2707))
+* `getCurrentOutputInfo()` previously threw an error when called from outside of an output; now it returns `NULL`. (#2707 and #2858)
 
-* Added a label to observer that auto-reloads `R/` directory to avoid confusion when using `reactlog`. ([#58](https://github.com/rstudio/reactlog/issues/58))
+* Added a label to observer that auto-reloads `R/` directory to avoid confusion when using `reactlog`. (#58)
 
-* `getDefaultReactiveDomain()` can now be called inside a `session$onSessionEnded` callback and will return the calling `session` information. ([#2757](https://github.com/rstudio/shiny/pull/2757))
+* `getDefaultReactiveDomain()` can now be called inside a `session$onSessionEnded` callback and will return the calling `session` information. (#2757)
+
+* Added a `'function'` class to `reactive()` and `reactiveVal()` objects. (#2793)
+
+* Added a new option (`type = "hidden"`) to `tabsetPanel()`, making it easier to set the active tab via other input controls (e.g., `radioButtons()`) rather than tabs or pills. Use this option in conjunction with `updateTabsetPanel()` and the new `tabsetPanelBody()` function (see `help(tabsetPanel)` for an example and more details).  (#2814)
+
+* Added function `updateActionLink()` to update an `actionLink()` label and/or icon value. (#2811)
+
+* Fixed #2856: Bumped jQuery 3 from 3.4.1 to 3.5.1. (#2857)
 
 ### Bug fixes
 
-* Fixed [#2606](https://github.com/rstudio/shiny/issues/2606): `debounce()` would not work properly if the code in the reactive expression threw an error on the first run. ([#2652](https://github.com/rstudio/shiny/pull/2652))
+* Fixed #2606: `debounce()` would not work properly if the code in the reactive expression threw an error on the first run. (#2652)
 
-* Fixed [#2653](https://github.com/rstudio/shiny/issues/2653): The `dataTableOutput()` could have incorrect output if certain characters were in the column names. ([#2658](https://github.com/rstudio/shiny/pull/2658))
+* Fixed #2653: The `dataTableOutput()` could have incorrect output if certain characters were in the column names. (#2658)
 
 ### Documentation Updates
 
+### Library updates
+
+* Updated from Font-Awesome 5.3.1 to 5.13.0, which includes icons related to COVID-19. For upgrade notes, see https://github.com/FortAwesome/Font-Awesome/blob/master/UPGRADING.md. (#2891)
+
+
+shiny 1.4.0.2
+===========
+
+Minor patch release: fixed some timing-dependent tests failed intermittently on CRAN build machines.
+
+
+shiny 1.4.0.1
+===========
+
+Minor patch release to account for changes to the grid package that will be upcoming in the R 4.0 release (#2776).
+
 
 shiny 1.4.0
 ===========
@@ -35,61 +148,61 @@ shiny 1.4.0
 
 ### Breaking changes
 
-* Resolved [#2554](https://github.com/rstudio/shiny/issues/2554): Upgraded jQuery from v.1.12.4 to v3.4.1 and bootstrap from v3.3.7 to v3.4.1. ([#2557](https://github.com/rstudio/shiny/pull/2557)). Since the jQuery upgrade may introduce breaking changes to user code, there is an option to switch back to the old version by setting `options(shiny.jquery.version = 1)`. If you've hard-coded `shared/jquery[.min].js` in the HTML of your Shiny app, in order to downgrade, you'll have to change that filepath to `shared/legacy/jquery[.min].js`.
+* Resolved #2554: Upgraded jQuery from v.1.12.4 to v3.4.1 and bootstrap from v3.3.7 to v3.4.1. (#2557). Since the jQuery upgrade may introduce breaking changes to user code, there is an option to switch back to the old version by setting `options(shiny.jquery.version = 1)`. If you've hard-coded `shared/jquery[.min].js` in the HTML of your Shiny app, in order to downgrade, you'll have to change that filepath to `shared/legacy/jquery[.min].js`.
 
 ### Improvements
 
-* Resolved [#1433](https://github.com/rstudio/shiny/issues/1433): `plotOutput()`'s coordmap info now includes discrete axis limits for **ggplot2** plots. As a result, any **shinytest** tests that contain **ggplot2** plots with discrete axes (that were recorded before this change) will now report differences that can safely be updated. This new coordmap info was added to correctly infer what data points are within an input brush and/or near input click/hover in scenarios where a non-trivial discrete axis scale is involved (e.g., whenever `scale_[x/y]_discrete(limits = ...)` and/or free scales across multiple discrete axes are used). ([#2410](https://github.com/rstudio/shiny/pull/2410))
+* Resolved #1433: `plotOutput()`'s coordmap info now includes discrete axis limits for **ggplot2** plots. As a result, any **shinytest** tests that contain **ggplot2** plots with discrete axes (that were recorded before this change) will now report differences that can safely be updated. This new coordmap info was added to correctly infer what data points are within an input brush and/or near input click/hover in scenarios where a non-trivial discrete axis scale is involved (e.g., whenever `scale_[x/y]_discrete(limits = ...)` and/or free scales across multiple discrete axes are used). (#2410)
 
-* Resolved [#2402](https://github.com/rstudio/shiny/issues/2402): An informative warning is now thrown for mis-specified (date) strings in `dateInput()`, `updateDateInput()`, `dateRangeInput()`, and `updateDateRangeInput()`. ([#2403](https://github.com/rstudio/shiny/pull/2403))
+* Resolved #2402: An informative warning is now thrown for mis-specified (date) strings in `dateInput()`, `updateDateInput()`, `dateRangeInput()`, and `updateDateRangeInput()`. (#2403)
 
-* If the `shiny.autoload.r` option is set to `TRUE`, all files ending in `.r` or `.R` contained in a directory named `R/` adjacent to your application are sourced when your app is started. This will become the default Shiny behavior in a future release ([#2547](https://github.com/rstudio/shiny/pull/2547))
+* If the `shiny.autoload.r` option is set to `TRUE`, all files ending in `.r` or `.R` contained in a directory named `R/` adjacent to your application are sourced when your app is started. This will become the default Shiny behavior in a future release (#2547)
 
-* Resolved [#2442](https://github.com/rstudio/shiny/issues/2442): The `shiny:inputchanged` JavaScript event now triggers on the related input element instead of `document`. Existing event listeners bound to `document` will still detect the event due to event bubbling. ([#2446](https://github.com/rstudio/shiny/pull/2446))
+* Resolved #2442: The `shiny:inputchanged` JavaScript event now triggers on the related input element instead of `document`. Existing event listeners bound to `document` will still detect the event due to event bubbling. (#2446)
 
-* Fixed [#1393](https://github.com/rstudio/shiny/issues/1393), [#2223](https://github.com/rstudio/shiny/issues/2223): For plots with any interactions enabled, the image is no longer draggable. ([#2460](https://github.com/rstudio/shiny/pull/2460))
+* Fixed #1393, #2223: For plots with any interactions enabled, the image is no longer draggable. (#2460)
 
-* Resolved [#2469](https://github.com/rstudio/shiny/issues/2469): `renderText` now takes a `sep` argument that is passed to `cat`. ([#2497](https://github.com/rstudio/shiny/pull/2497))
+* Resolved #2469: `renderText` now takes a `sep` argument that is passed to `cat`. (#2497)
 
-* Added `resourcePaths()` and `removeResourcePaths()` functions. ([#2459](https://github.com/rstudio/shiny/pull/2459))
+* Added `resourcePaths()` and `removeResourcePaths()` functions. (#2459)
 
-* Resolved [#2433](https://github.com/rstudio/shiny/issues/2433): An informative warning is now thrown if subdirectories of the app's `www/` directory are masked by other resource prefixes and/or the same resource prefix is mapped to different local file paths. ([#2434](https://github.com/rstudio/shiny/pull/2434))
+* Resolved #2433: An informative warning is now thrown if subdirectories of the app's `www/` directory are masked by other resource prefixes and/or the same resource prefix is mapped to different local file paths. (#2434)
 
-* Resolved [#2478](https://github.com/rstudio/shiny/issues/2478): `cmd + shift + f3` and `ctrl + shift + f3` can now be used to add a reactlog mark. If reactlog keybindings are used and the reactlog is not enabled, an error page is displayed showing how to enable reactlog recordings. ([#2560](https://github.com/rstudio/shiny/pull/2560))
+* Resolved #2478: `cmd + shift + f3` and `ctrl + shift + f3` can now be used to add a reactlog mark. If reactlog keybindings are used and the reactlog is not enabled, an error page is displayed showing how to enable reactlog recordings. (#2560)
 
 ### Bug fixes
 
-* Partially resolved [#2423](https://github.com/rstudio/shiny/issues/2423): Reactivity in Shiny leaked some memory, because R can leak memory whenever a new symbols is interned, which happens whenever a new name/key is used in an environment. R now uses the fastmap package, which avoids this problem. ([#2429](https://github.com/rstudio/shiny/pull/2429))
+* Partially resolved #2423: Reactivity in Shiny leaked some memory, because R can leak memory whenever a new symbols is interned, which happens whenever a new name/key is used in an environment. R now uses the fastmap package, which avoids this problem. (#2429)
 
-* Fixed [#2267](https://github.com/rstudio/shiny/issues/2267): Fixed a memory leak with `invalidateLater`. ([#2555](https://github.com/rstudio/shiny/pull/2555))
+* Fixed #2267: Fixed a memory leak with `invalidateLater`. (#2555)
 
-* Fixed [#1548](https://github.com/rstudio/shiny/issues/1548): The `reactivePoll` function leaked an observer; that is the observer would continue to exist even if the `reactivePoll` object was no longer accessible. [#2522](https://github.com/rstudio/shiny/pull/2522)
+* Fixed #1548: The `reactivePoll` function leaked an observer; that is the observer would continue to exist even if the `reactivePoll` object was no longer accessible. #2522
 
-* Fixed [#2116](https://github.com/rstudio/shiny/issues/2116): Fixed an issue where dynamic tabs could not be added when on a hosted platform. ([#2545](https://github.com/rstudio/shiny/pull/2545))
+* Fixed #2116: Fixed an issue where dynamic tabs could not be added when on a hosted platform. (#2545)
 
-* Resolved [#2515](https://github.com/rstudio/shiny/issues/2515): `selectInput()` and `selectizeInput()` now deal appropriately with named factors. Note that `updateSelectInput()` and `updateSelectizeInput()` **do not** yet handle factors; their behavior is unchanged. ([#2524](https://github.com/rstudio/shiny/pull/2524), [#2540](https://github.com/rstudio/shiny/pull/2540), [#2625](https://github.com/rstudio/shiny/pull/2625))
+* Resolved #2515: `selectInput()` and `selectizeInput()` now deal appropriately with named factors. Note that `updateSelectInput()` and `updateSelectizeInput()` **do not** yet handle factors; their behavior is unchanged. (#2524, #2540, #2625)
 
-* Resolved [#2471](https://github.com/rstudio/shiny/issues/2471): Large file uploads to a Windows computer were slow. ([#2579](https://github.com/rstudio/shiny/pull/2579))
+* Resolved #2471: Large file uploads to a Windows computer were slow. (#2579)
 
-* Fixed [#2387](https://github.com/rstudio/shiny/issues/2387): Updating a `sliderInput()`'s type from numeric to date no longer changes the rate policy from debounced to immediate. More generally, updating an input binding with a new type should (no longer) incorrectly alter the input rate policy. ([#2404](https://github.com/rstudio/shiny/pull/2404))
+* Fixed #2387: Updating a `sliderInput()`'s type from numeric to date no longer changes the rate policy from debounced to immediate. More generally, updating an input binding with a new type should (no longer) incorrectly alter the input rate policy. (#2404)
 
-* Fixed [#868](https://github.com/rstudio/shiny/issues/868): If an input is initialized with a `NULL` label, it can now be updated with a string. Moreover, if an input label is initialized with a string, it can now be removed by updating with `label=character(0)` (similar to how `choices` and `selected` can be cleared in `updateSelectInput()`). ([#2406](https://github.com/rstudio/shiny/pull/2406))
+* Fixed #868: If an input is initialized with a `NULL` label, it can now be updated with a string. Moreover, if an input label is initialized with a string, it can now be removed by updating with `label=character(0)` (similar to how `choices` and `selected` can be cleared in `updateSelectInput()`). (#2406)
 
-* Fixed [#2250](https://github.com/rstudio/shiny/issues/2250): `updateSliderInput()` now works with un-specified (or zero-length) `min`, `max`, and `value`. ([#2416](https://github.com/rstudio/shiny/pull/2416))
+* Fixed #2250: `updateSliderInput()` now works with un-specified (or zero-length) `min`, `max`, and `value`. (#2416)
 
-* Fixed [#2396](https://github.com/rstudio/shiny/issues/2396): `selectInput("myID", ...)` resulting in an extra `myID-selectized` input (introduced in v1.2.0). ([#2418](https://github.com/rstudio/shiny/pull/2418))
+* Fixed #2396: `selectInput("myID", ...)` resulting in an extra `myID-selectized` input (introduced in v1.2.0). (#2418)
 
-* Fixed [#2233](https://github.com/rstudio/shiny/issues/2233): `verbatimTextOutput()` produced wrapped text on Safari, but the text should not be wrapped. ([#2353](https://github.com/rstudio/shiny/pull/2353))
+* Fixed #2233: `verbatimTextOutput()` produced wrapped text on Safari, but the text should not be wrapped. (#2353)
 
-* Fixed [#2335](https://github.com/rstudio/shiny/issues/2335): When `dateInput()`'s `value` was unspecified, and `max` and/or `min` was set to `Sys.Date()`, the value was not being set properly. ([#2526](https://github.com/rstudio/shiny/pull/2526))
+* Fixed #2335: When `dateInput()`'s `value` was unspecified, and `max` and/or `min` was set to `Sys.Date()`, the value was not being set properly. (#2526)
 
-* Fixed [#2591](https://github.com/rstudio/shiny/issues/2591): Providing malformed date-strings to `min` or `max` no longer results in JS errors for `dateInput()` and `dateRangeInput()`. ([#2592](https://github.com/rstudio/shiny/pull/2592))
+* Fixed #2591: Providing malformed date-strings to `min` or `max` no longer results in JS errors for `dateInput()` and `dateRangeInput()`. (#2592)
 
-* Fixed [rstudio/reactlog#36](https://github.com/rstudio/reactlog/issues/36): Changes to reactive values not displaying accurately in reactlog. ([#2424](https://github.com/rstudio/shiny/pull/2424))
+* Fixed [rstudio/reactlog#36](https://github.com/rstudio/reactlog/issues/36): Changes to reactive values not displaying accurately in reactlog. (#2424)
 
-* Fixed [#2598](https://github.com/rstudio/shiny/issues/2598): Showcase files don't appear with a wide window. ([#2582](https://github.com/rstudio/shiny/pull/2582))
+* Fixed #2598: Showcase files don't appear with a wide window. (#2582)
 
-* Fixed [#2329](https://github.com/rstudio/shiny/issues/2329), [#1817](https://github.com/rstudio/shiny/issues/1817): These bugs were reported as fixed in Shiny 1.3.0 but were not actually fixed because some JavaScript changes were accidentally not included in the release. The fix resolves issues that occur when `withProgressBar()` or bookmarking are combined with the [networkD3](https://christophergandrud.github.io/networkD3/) package's Sankey plot.
+* Fixed #2329, #1817: These bugs were reported as fixed in Shiny 1.3.0 but were not actually fixed because some JavaScript changes were accidentally not included in the release. The fix resolves issues that occur when `withProgressBar()` or bookmarking are combined with the [networkD3](https://christophergandrud.github.io/networkD3/) package's Sankey plot.
 
 
 shiny 1.3.2
@@ -97,9 +210,9 @@ shiny 1.3.2
 
 ### Bug fixes
 
-* Fixed [#2385](https://github.com/rstudio/shiny/issues/2385): Static CSS/JS resources in subapps in R Markdown documents did not render properly. ([#2386](https://github.com/rstudio/shiny/pull/2386))
+* Fixed #2385: Static CSS/JS resources in subapps in R Markdown documents did not render properly. (#2386)
 
-* Fixed [#2280](https://github.com/rstudio/shiny/issues/2280): Shiny applications that used a www/index.html file did not serve up the index file. ([#2382](https://github.com/rstudio/shiny/pull/2382))
+* Fixed #2280: Shiny applications that used a www/index.html file did not serve up the index file. (#2382)
 
 
 shiny 1.3.1
@@ -109,7 +222,7 @@ shiny 1.3.1
 
 ### Bug fixes
 
-* Fixed a performance issue introduced in v1.3.0 when using large nested lists within Shiny. ([#2377](https://github.com/rstudio/shiny/pull/2377))
+* Fixed a performance issue introduced in v1.3.0 when using large nested lists within Shiny. (#2377)
 
 
 shiny 1.3.0
@@ -121,27 +234,27 @@ shiny 1.3.0
 
 ### New features
 
-* Revamped Shiny's [reactlog](https://github.com/rstudio/reactlog) viewer which debugs reactivity within a shiny application.  This allows users to traverse the reactivity history of a shiny application, filter to the dependency tree of a selected reactive object, and search for matching reactive objects.  See `?reactlogShow` for more details and how to enable this feature. ([#2107](https://github.com/rstudio/shiny/pull/2107))
+* Revamped Shiny's [reactlog](https://github.com/rstudio/reactlog) viewer which debugs reactivity within a shiny application.  This allows users to traverse the reactivity history of a shiny application, filter to the dependency tree of a selected reactive object, and search for matching reactive objects.  See `?reactlogShow` for more details and how to enable this feature. (#2107)
 
-* Shiny now serves static files on a background thread. This means that things like JavaScript and CSS assets can be served without blocking or being blocked by the main R thread, and should result in significantly better performance for heavily loaded servers. ([#2280](https://github.com/rstudio/shiny/pull/2280))
+* Shiny now serves static files on a background thread. This means that things like JavaScript and CSS assets can be served without blocking or being blocked by the main R thread, and should result in significantly better performance for heavily loaded servers. (#2280)
 
 ### Minor new features and improvements
 
-* The `Shiny-Shared-Secret` security header is now checked using constant-time comparison to prevent timing attacks (thanks @dirkschumacher!). ([#2319](https://github.com/rstudio/shiny/pull/2319))
+* The `Shiny-Shared-Secret` security header is now checked using constant-time comparison to prevent timing attacks (thanks @dirkschumacher!). (#2319)
 
 ### Bug fixes
 
-* Fixed [#2245](https://github.com/rstudio/shiny/issues/2245): `updateSelectizeInput()` did not update labels. ([#2248](https://github.com/rstudio/shiny/pull/2248))
+* Fixed #2245: `updateSelectizeInput()` did not update labels. (#2248)
 
-* Fixed [#2308](https://github.com/rstudio/shiny/issues/2308): When restoring a bookmarked application, inputs with a leading `.` would not be restored. ([#2311](https://github.com/rstudio/shiny/pull/2311))
+* Fixed #2308: When restoring a bookmarked application, inputs with a leading `.` would not be restored. (#2311)
 
-* Fixed [#2305](https://github.com/rstudio/shiny/issues/2305), [#2322](https://github.com/rstudio/shiny/issues/2322), [#2351](https://github.com/rstudio/shiny/issues/2351): When an input in dynamic UI is restored from bookmarks, it would keep getting set to the same value. ([#2360](https://github.com/rstudio/shiny/pull/2360))
+* Fixed #2305, #2322, #2351: When an input in dynamic UI is restored from bookmarks, it would keep getting set to the same value. (#2360)
 
-* Fixed [#2349](https://github.com/rstudio/shiny/issues/2349), [#2329](https://github.com/rstudio/shiny/issues/2329), [#1817](https://github.com/rstudio/shiny/issues/1817): These were various bugs triggered by the presence of the [networkD3](https://christophergandrud.github.io/networkD3/) package's Sankey plot in an app. Impacted features included `dateRangeInput`, `withProgressBar`, and bookmarking ([#2359](https://github.com/rstudio/shiny/pull/2359))
+* Fixed #2349, #2329, #1817: These were various bugs triggered by the presence of the [networkD3](https://christophergandrud.github.io/networkD3/) package's Sankey plot in an app. Impacted features included `dateRangeInput`, `withProgressBar`, and bookmarking (#2359)
 
 ### Documentation Updates
 
-* Fixed [#2247](https://github.com/rstudio/shiny/issues/2247): `renderCachedPlot` now supports using promises for either `expr` or `cacheKeyExpr`. (Shiny v1.2.0 supported async `expr`, but only if `cacheKeyExpr` was async as well; now you can use any combination of sync/async for `expr` and `cacheKeyExpr`.) [#2261](https://github.com/rstudio/shiny/pull/2261)
+* Fixed #2247: `renderCachedPlot` now supports using promises for either `expr` or `cacheKeyExpr`. (Shiny v1.2.0 supported async `expr`, but only if `cacheKeyExpr` was async as well; now you can use any combination of sync/async for `expr` and `cacheKeyExpr`.) #2261
 
 
 shiny 1.2.0
@@ -157,57 +270,57 @@ This release features plot caching, an important new tool for improving performa
 
 ### New features
 
-* Added `renderCachedPlot()`, which stores plots in a cache so that they can be served up almost instantly. ([#1997](https://github.com/rstudio/shiny/pull/1997))
+* Added `renderCachedPlot()`, which stores plots in a cache so that they can be served up almost instantly. (#1997)
 
 ### Minor new features and improvements
 
-* Upgrade FontAwesome from 4.7.0 to 5.3.1 and made `icon` tags browsable, which means they will display in a web browser or RStudio viewer by default ([#2186](https://github.com/rstudio/shiny/issues/2186)). Note that if your application or library depends on FontAwesome directly using custom CSS, you may need to make some or all of the changes recommended in [Upgrade from Version 4](https://fontawesome.com/how-to-use/on-the-web/setup/upgrading-from-version-4). Font Awesome icons can also now be used in static R Markdown documents.
+* Upgrade FontAwesome from 4.7.0 to 5.3.1 and made `icon` tags browsable, which means they will display in a web browser or RStudio viewer by default (#2186). Note that if your application or library depends on FontAwesome directly using custom CSS, you may need to make some or all of the changes recommended in [Upgrade from Version 4](https://fontawesome.com/how-to-use/on-the-web/setup/upgrading-from-version-4). Font Awesome icons can also now be used in static R Markdown documents.
 
-* Address [#174](https://github.com/rstudio/shiny/issues/174): Added `datesdisabled` and `daysofweekdisabled` as new parameters to `dateInput()`. This resolves [#174](https://github.com/rstudio/shiny/issues/174) and exposes the underlying arguments of [Bootstrap Datepicker](http://bootstrap-datepicker.readthedocs.io/en/latest/options.html#datesdisabled). `datesdisabled` expects a character vector with values in `yyyy/mm/dd` format and `daysofweekdisabled` expects an integer vector with day interger ids (Sunday=0, Saturday=6). The default value for both is `NULL`, which leaves all days selectable. Thanks, @nathancday! ([#2147](https://github.com/rstudio/shiny/pull/2147))
+* Address #174: Added `datesdisabled` and `daysofweekdisabled` as new parameters to `dateInput()`. This resolves #174 and exposes the underlying arguments of [Bootstrap Datepicker](http://bootstrap-datepicker.readthedocs.io/en/latest/options.html#datesdisabled). `datesdisabled` expects a character vector with values in `yyyy/mm/dd` format and `daysofweekdisabled` expects an integer vector with day interger ids (Sunday=0, Saturday=6). The default value for both is `NULL`, which leaves all days selectable. Thanks, @nathancday! (#2147)
 
-* Support for selecting variables of a data frame with the output values to be used within tidy evaluation.  Added functions: `varSelectInput`, `varSelectizeInput`, `updateVarSelectInput`, `updateVarSelectizeInput`. ([#2091](https://github.com/rstudio/shiny/pull/2091))
+* Support for selecting variables of a data frame with the output values to be used within tidy evaluation.  Added functions: `varSelectInput`, `varSelectizeInput`, `updateVarSelectInput`, `updateVarSelectizeInput`. (#2091)
 
-* Addressed [#2042](https://github.com/rstudio/shiny/issues/2042): dates outside of `min`/`max` date range are now a lighter shade of grey to highlight the allowed range. ([#2087](https://github.com/rstudio/shiny/pull/2087))
+* Addressed #2042: dates outside of `min`/`max` date range are now a lighter shade of grey to highlight the allowed range. (#2087)
 
-* Added support for plot interaction when the plot is scaled. ([#2125](https://github.com/rstudio/shiny/pull/2125))
+* Added support for plot interaction when the plot is scaled. (#2125)
 
-* Fixed [#1933](https://github.com/rstudio/shiny/issues/1933): extended server-side selectize to lists and optgroups. ([#2102](https://github.com/rstudio/shiny/pull/2102))
+* Fixed #1933: extended server-side selectize to lists and optgroups. (#2102)
 
-* Added namespace support when freezing reactiveValue keys. [#2080](https://github.com/rstudio/shiny/pull/2080)
+* Added namespace support when freezing reactiveValue keys. #2080
 
-* Upgrade selectize.js from 0.12.1 to 0.12.4 [#2028](https://github.com/rstudio/shiny/issues/2028)
+* Upgrade selectize.js from 0.12.1 to 0.12.4 #2028
 
-* Addressed [#2079](https://github.com/rstudio/shiny/issues/2079): Added `coords_img`, `coords_css`, and `img_css_ratio` fields containing x and y location information for plot brush, hover, and click events. [#2183](https://github.com/rstudio/shiny/pull/2183)
+* Addressed #2079: Added `coords_img`, `coords_css`, and `img_css_ratio` fields containing x and y location information for plot brush, hover, and click events. #2183
 
 ### Bug fixes
 
-* Fixed [#2033](https://github.com/rstudio/shiny/issues/2033): RStudio Viewer window not closed on `shiny::stopApp()`. Thanks, @vnijs! [#2047](https://github.com/rstudio/shiny/pull/2047)
+* Fixed #2033: RStudio Viewer window not closed on `shiny::stopApp()`. Thanks, @vnijs! #2047
 
-* Fixed [#1935](https://github.com/rstudio/shiny/issues/1935): correctly returns plot coordinates when using outer margins. ([#2108](https://github.com/rstudio/shiny/pull/2108))
+* Fixed #1935: correctly returns plot coordinates when using outer margins. (#2108)
 
-* Resolved [#2019](https://github.com/rstudio/shiny/issues/2019): `updateSliderInput` now changes the slider formatting if the input type changes. ([#2099](https://github.com/rstudio/shiny/pull/2099))
+* Resolved #2019: `updateSliderInput` now changes the slider formatting if the input type changes. (#2099)
 
-* Fixed [#2138](https://github.com/rstudio/shiny/issues/2138): Inputs that are part of a `renderUI` were no longer restoring correctly from bookmarked state. [#2139](https://github.com/rstudio/shiny/pull/2139)
+* Fixed #2138: Inputs that are part of a `renderUI` were no longer restoring correctly from bookmarked state. #2139
 
-* The `knit_print` methods from htmltools are no longer imported into shiny and then exported. Also, shiny's `knit_print` methods are no longer exported. [#2166](https://github.com/rstudio/shiny/pull/2166)
+* The `knit_print` methods from htmltools are no longer imported into shiny and then exported. Also, shiny's `knit_print` methods are no longer exported. #2166
 
-* Fixed [#2093](https://github.com/rstudio/shiny/issues/2093): Make sure bookmark scope directory does not exist before trying to create it. [#2168](https://github.com/rstudio/shiny/pull/2168)
+* Fixed #2093: Make sure bookmark scope directory does not exist before trying to create it. #2168
 
-* Fixed [#2177](https://github.com/rstudio/shiny/issues/2177): The session name is now being recorded when exiting a context.  Multiple sessions can now view their respective reactlogs. [#2180](https://github.com/rstudio/shiny/pull/2180)
+* Fixed #2177: The session name is now being recorded when exiting a context.  Multiple sessions can now view their respective reactlogs. #2180
 
-* Fixed [#2162](https://github.com/rstudio/shiny/issues/2162): `selectInput` was sending spurious duplicate values to the server when using backspace. Thanks, @sada1993! [#2187](https://github.com/rstudio/shiny/pull/2187)
+* Fixed #2162: `selectInput` was sending spurious duplicate values to the server when using backspace. Thanks, @sada1993! #2187
 
-* Fixed [#2142](https://github.com/rstudio/shiny/issues/2142): Dropping files on `fileInput`s stopped working on recent releases of Firefox. Thanks @dmenne for reporting! [#2203](https://github.com/rstudio/shiny/pull/2203)
+* Fixed #2142: Dropping files on `fileInput`s stopped working on recent releases of Firefox. Thanks @dmenne for reporting! #2203
 
-* Fixed [#2204](https://github.com/rstudio/shiny/issues/2204): `updateDateInput` could set the wrong date on days where DST begins. (Thanks @GaGaMan1101!) [#2212](https://github.com/rstudio/shiny/pull/2212)
+* Fixed #2204: `updateDateInput` could set the wrong date on days where DST begins. (Thanks @GaGaMan1101!) #2212
 
-* Fixed [#2225](https://github.com/rstudio/shiny/issues/2225): Input event queue can stall in apps that use async. [#2226](https://github.com/rstudio/shiny/pull/2226)
+* Fixed #2225: Input event queue can stall in apps that use async. #2226
 
-* Fixed [#2228](https://github.com/rstudio/shiny/issues/2228): `reactiveTimer` fails when not owned by a session. Thanks, @P-Bettega! [#2229](https://github.com/rstudio/shiny/pull/2229)
+* Fixed #2228: `reactiveTimer` fails when not owned by a session. Thanks, @P-Bettega! #2229
 
 ### Documentation Updates
 
-* Addressed [#1864](https://github.com/rstudio/shiny/issues/1864) by changing `optgroup` documentation to use `list` instead of `c`. ([#2084](https://github.com/rstudio/shiny/pull/2084))
+* Addressed #1864 by changing `optgroup` documentation to use `list` instead of `c`. (#2084)
 
 
 shiny 1.1.0
@@ -223,59 +336,60 @@ This is a significant release for Shiny, with a major new feature that was nearl
 
 ### New features
 
-* Support for asynchronous operations! Built-in render functions that expected a certain kind of object to be yielded from their `expr`, now generally can handle a promise for that kind of object. Reactive expressions and observers are now promise-aware as well. ([#1932](https://github.com/rstudio/shiny/pull/1932))
+* Support for asynchronous operations! Built-in render functions that expected a certain kind of object to be yielded from their `expr`, now generally can handle a promise for that kind of object. Reactive expressions and observers are now promise-aware as well. (#1932)
 
-* Introduced two changes to the (undocumented but widely used) JavaScript function `Shiny.onInputChange(name, value)`. First, we changed the function name to `Shiny.setInputValue` (but don't worry--the old function name will continue to work). Second, until now, all calls to `Shiny.onInputChange(inputId, value)` have been "deduplicated"; that is, anytime an input is set to the same value it already has, the set is ignored. With Shiny v1.1, you can now add an options object as the third parameter: `Shiny.setInputValue("name", value, {priority: "event"})`. When the priority option is set to `"event"`, Shiny will always send the value and trigger reactivity, whether it is a duplicate or not. This closes [#928](https://github.com/rstudio/shiny/issues/928), which was the most upvoted open issue by far! Thanks, @daattali. ([#2018](https://github.com/rstudio/shiny/pull/2018))
+* Introduced two changes to the (undocumented but widely used) JavaScript function `Shiny.onInputChange(name, value)`. First, we changed the function name to `Shiny.setInputValue` (but don't worry--the old function name will continue to work). Second, until now, all calls to `Shiny.onInputChange(inputId, value)` have been "deduplicated"; that is, anytime an input is set to the same value it already has, the set is ignored. With Shiny v1.1, you can now add an options object as the third parameter: `Shiny.setInputValue("name", value, {priority: "event"})`. When the priority option is set to `"event"`, Shiny will always send the value and trigger reactivity, whether it is a duplicate or not. This closes #928, which was the most upvoted open issue by far! Thanks, @daattali. (#2018)
 
 ### Minor new features and improvements
 
-* Addressed [#1978](https://github.com/rstudio/shiny/issues/1978): `shiny:value` is now triggered when duplicate output data is received from the server. (Thanks, @andrewsali! [#1999](https://github.com/rstudio/shiny/pull/1999))
+* Addressed #1978: `shiny:value` is now triggered when duplicate output data is received from the server. (Thanks, @andrewsali! #1999)
 
-* If a shiny output contains a css class of `shiny-report-size`, its container height and width are now reported in `session$clientData`. So, for an output with an id with `"myID"`, the height/width can be accessed via `session$clientData[['output_myID_height']]`/`session$clientData[['output_myID_width']]`. Addresses [#1980](https://github.com/rstudio/shiny/issues/1980). (Thanks, @cpsievert! [#1981](https://github.com/rstudio/shiny/pull/1981))
+* If a shiny output contains a css class of `shiny-report-size`, its container height and width are now reported in `session$clientData`. So, for an output with an id with `"myID"`, the height/width can be accessed via `session$clientData[['output_myID_height']]`/`session$clientData[['output_myID_width']]`. Addresses #1980. (Thanks, @cpsievert! #1981)
 
-* Added a new `autoclose = TRUE` parameter to `dateInput()` and `dateRangeInput()`. This closed [#1969](https://github.com/rstudio/shiny/issues/1969) which was a duplicate of much older issue, [#173](https://github.com/rstudio/shiny/issues/173). The default value is `TRUE` since that seems to be the common use case. However, this will cause existing apps with date inputs (that update to this version of Shiny) to have the datepicker be immediately closed once a date is selected. For most apps, this is actually desired behavior; if you wish to keep the datepicker open until the user clicks out of it use `autoclose = FALSE`. ([#1987](https://github.com/rstudio/shiny/pull/1987))
+* Added a new `autoclose = TRUE` parameter to `dateInput()` and `dateRangeInput()`. This closed #1969 which was a duplicate of much older issue, #173. The default value is `TRUE` since that seems to be the common use case. However, this will cause existing apps with date inputs (that update to this version of Shiny) to have the datepicker be immediately closed once a date is selected. For most apps, this is actually desired behavior; if you wish to keep the datepicker open until the user clicks out of it use `autoclose = FALSE`. (#1987)
 
-* The version of Shiny is now accessible from Javascript, with `Shiny.version`. There is also a new function for comparing version strings, `Shiny.compareVersion()`. ([#1826](https://github.com/rstudio/shiny/pull/1826), [#1830](https://github.com/rstudio/shiny/pull/1830))
+* The version of Shiny is now accessible from Javascript, with `Shiny.version`. There is also a new function for comparing version strings, `Shiny.compareVersion()`. (#1826, #1830)
 
-* Addressed [#1851](https://github.com/rstudio/shiny/issues/1851): Stack traces are now smaller in some places `do.call()` is used. ([#1856](https://github.com/rstudio/shiny/pull/1856))
+* Addressed #1851: Stack traces are now smaller in some places `do.call()` is used. (#1856)
 
 * Stack traces have been improved, with more aggressive de-noising and support for deep stack traces (stitching together multiple stack traces that are conceptually part of the same async operation).
 
-* Addressed [#1859](https://github.com/rstudio/shiny/issues/1859): Server-side selectize is now significantly faster. (Thanks to @dselivanov [#1861](https://github.com/rstudio/shiny/pull/1861))
+* Addressed #1859: Server-side selectize is now significantly faster. (Thanks to @dselivanov #1861)
 
-* [#1989](https://github.com/rstudio/shiny/issues/1989): The server side of outputs can now be removed (e.g. `output$plot <- NULL`). This is not usually necessary but it does allow some objects to be garbage collected, which might matter if you are dynamically creating and destroying many outputs. (Thanks, @mmuurr! [#2011](https://github.com/rstudio/shiny/pull/2011))
+* #1989: The server side of outputs can now be removed (e.g. `output$plot <- NULL`). This is not usually necessary but it does allow some objects to be garbage collected, which might matter if you are dynamically creating and destroying many outputs. (Thanks, @mmuurr! #2011)
 
-* Removed the (ridiculously outdated) "experimental feature" tag from the reference documentation for `renderUI`. ([#2036](https://github.com/rstudio/shiny/pull/2036))
+* Removed the (ridiculously outdated) "experimental feature" tag from the reference documentation for `renderUI`. (#2036)
 
-* Addressed [#1907](https://github.com/rstudio/shiny/issues/1907): the `ignoreInit` argument was first added only to `observeEvent`. Later, we also added it to `eventReactive`, but forgot to update the documentation. Now done, thanks [@flo12392](https://github.com/flo12392)! ([#2036](https://github.com/rstudio/shiny/pull/2036))
+* Addressed #1907: the `ignoreInit` argument was first added only to `observeEvent`. Later, we also added it to `eventReactive`, but forgot to update the documentation. Now done, thanks [@flo12392](https://github.com/flo12392)! (#2036)
 
 ### Bug fixes
 
-* Fixed [#1006](https://github.com/rstudio/shiny/issues/1006): Slider inputs sometimes showed too many digits. ([#1956](https://github.com/rstudio/shiny/pull/1956))
+* Fixed #1006: Slider inputs sometimes showed too many digits. (#1956)
 
-* Fixed [#1958](https://github.com/rstudio/shiny/issues/1958): Slider inputs previously displayed commas after a decimal point. ([#1960](https://github.com/rstudio/shiny/pull/1960))
+* Fixed #1958: Slider inputs previously displayed commas after a decimal point. (#1960)
 
 * The internal `URLdecode()` function previously was a copy of `httpuv::decodeURIComponent()`, assigned at build time; now it invokes the httpuv function at run time.
 
-* Fixed [#1840](https://github.com/rstudio/shiny/issues/1840): with the release of Shiny 1.0.5, we accidently changed the relative positioning of the icon and the title text in `navbarMenu`s and `tabPanel`s. This fix reverts this behavior back (i.e. the icon should be to the left of the text and/or the downward arrow in case of `navbarMenu`s). ([#1848](https://github.com/rstudio/shiny/pull/1848))
+* Fixed #1840: with the release of Shiny 1.0.5, we accidently changed the relative positioning of the icon and the title text in `navbarMenu`s and `tabPanel`s. This fix reverts this behavior back (i.e. the icon should be to the left of the text and/or the downward arrow in case of `navbarMenu`s). (#1848)
 
-* Fixed [#1600](https://github.com/rstudio/shiny/issues/1600): URL-encoded bookmarking did not work with sliders that had dates or date-times. ([#1961](https://github.com/rstudio/shiny/pull/1961))
+* Fixed #1600: URL-encoded bookmarking did not work with sliders that had dates or date-times. (#1961)
 
-* Fixed [#1962](https://github.com/rstudio/shiny/issues/1962): [File dragging and dropping](https://blog.rstudio.com/2017/08/15/shiny-1-0-4/) broke in the presence of jQuery version 3.0 as introduced by the [rhandsontable](https://jrowen.github.io/rhandsontable/) [htmlwidget](https://www.htmlwidgets.org/). ([#2005](https://github.com/rstudio/shiny/pull/2005))
+* Fixed #1962: [File dragging and dropping](https://blog.rstudio.com/2017/08/15/shiny-1-0-4/) broke in the presence of jQuery version 3.0 as introduced by the [rhandsontable](https://jrowen.github.io/rhandsontable/) [htmlwidget](https://www.htmlwidgets.org/). (#2005)
 
-* Improved the error handling inside the `addResourcePath()` function, to give end users more informative error messages when the `directoryPath` argument cannot be normalized. This is especially useful for `runtime: shiny_prerendered` Rmd documents, like `learnr` tutorials. ([#1968](https://github.com/rstudio/shiny/pull/1968))
+* Improved the error handling inside the `addResourcePath()` function, to give end users more informative error messages when the `directoryPath` argument cannot be normalized. This is especially useful for `runtime: shiny_prerendered` Rmd documents, like `learnr` tutorials. (#1968)
 
-* Changed script tags in reactlog ([inst/www/reactive-graph.html](https://github.com/rstudio/shiny/blob/v1.1.0/inst/www/reactive-graph.html)) from HTTP to HTTPS in order to avoid mixed content blocking by most browsers. (Thanks, @jekriske-lilly! [#1844](https://github.com/rstudio/shiny/pull/1844))
+* Changed script tags in reactlog ([inst/www/reactive-graph.html](https://github.com/rstudio/shiny/blob/v1.1.0/inst/www/reactive-graph.html)) from HTTP to HTTPS in order to avoid mixed content blocking by most browsers. (Thanks, @jekriske-lilly! #1844)
 
-* Addressed [#1784](https://github.com/rstudio/shiny/issues/1784): `runApp()` will avoid port 6697, which is considered unsafe by Chrome.
+* Addressed #1784: `runApp()` will avoid port 6697, which is considered unsafe by Chrome.
 
-* Fixed [#2000](https://github.com/rstudio/shiny/issues/2000): Implicit calls to `xxxOutput` not working inside modules. (Thanks, @GregorDeCillia! [#2010](https://github.com/rstudio/shiny/pull/2010))
+* Fixed #2000: Implicit calls to `xxxOutput` not working inside modules. (Thanks, @GregorDeCillia! #2010)
+
+* Fixed #2021: Memory leak with `reactiveTimer` and `invalidateLater`. (#2022)
 
-* Fixed [#2021](https://github.com/rstudio/shiny/issues/2021): Memory leak with `reactiveTimer` and `invalidateLater`. ([#2022](https://github.com/rstudio/shiny/pull/2022))
 
 ### Library updates
 
-* Updated to ion.rangeSlider 2.2.0. ([#1955](https://github.com/rstudio/shiny/pull/1955))
+* Updated to ion.rangeSlider 2.2.0. (#1955)
 
 
 ## Known issues
@@ -290,11 +404,11 @@ shiny 1.0.5
 
 ### Bug fixes
 
-* Fixed [#1818](https://github.com/rstudio/shiny/issues/1818): `conditionalPanel()` expressions that have a newline character in them caused the application to not work. ([#1820](https://github.com/rstudio/shiny/pull/1820))
+* Fixed #1818: `conditionalPanel()` expressions that have a newline character in them caused the application to not work. (#1820)
 
-* Added a safe wrapper function for internal calls to `jsonlite::fromJSON()`. ([#1822](https://github.com/rstudio/shiny/pull/1822))
+* Added a safe wrapper function for internal calls to `jsonlite::fromJSON()`. (#1822)
 
-* Fixed [#1824](https://github.com/rstudio/shiny/issues/1824): HTTP HEAD requests on static files caused the application to stop. ([#1825](https://github.com/rstudio/shiny/pull/1825))
+* Fixed #1824: HTTP HEAD requests on static files caused the application to stop. (#1825)
 
 
 shiny 1.0.4
@@ -306,57 +420,57 @@ There are three headlining features in this release of Shiny. It is now possible
 
 ### New features
 
-* Implemented [#1668](https://github.com/rstudio/shiny/issues/1668): dynamic tabs: added functions (`insertTab`, `appendTab`, `prependTab`, `removeTab`, `showTab` and `hideTab`) that allow you to do those actions for an existing `tabsetPanel`. ([#1794](https://github.com/rstudio/shiny/pull/1794))
+* Implemented #1668: dynamic tabs: added functions (`insertTab`, `appendTab`, `prependTab`, `removeTab`, `showTab` and `hideTab`) that allow you to do those actions for an existing `tabsetPanel`. (#1794)
 
-* Implemented [#1213](https://github.com/rstudio/shiny/issues/1213): Added a new function, `onStop()`, which can be used to register callback functions that are invoked when an application exits, or when a user session ends. (Multiple sessions can be connected to a single running Shiny application.) This is useful if you have finalization/clean-up code that should be run after the application exits. ([#1770](https://github.com/rstudio/shiny/pull/1770)
+* Implemented #1213: Added a new function, `onStop()`, which can be used to register callback functions that are invoked when an application exits, or when a user session ends. (Multiple sessions can be connected to a single running Shiny application.) This is useful if you have finalization/clean-up code that should be run after the application exits. (#1770
 
-* Implemented [#1155](https://github.com/rstudio/shiny/issues/1155): Files can now be drag-and-dropped on `fileInput` controls. The appearance of `fileInput` controls while files are being dragged can be modified by overriding the `shiny-file-input-active` and `shiny-file-input-over` classes. ([#1782](https://github.com/rstudio/shiny/pull/1782))
+* Implemented #1155: Files can now be drag-and-dropped on `fileInput` controls. The appearance of `fileInput` controls while files are being dragged can be modified by overriding the `shiny-file-input-active` and `shiny-file-input-over` classes. (#1782)
 
 ### Minor new features and improvements
 
-* Addressed [#1688](https://github.com/rstudio/shiny/issues/1688): trigger a new `shiny:outputinvalidated` event when an output gets invalidated, at the same time that the `recalculating` CSS class is added. ([#1758](https://github.com/rstudio/shiny/pull/1758), thanks [@andrewsali](https://github.com/andrewsali)!)
+* Addressed #1688: trigger a new `shiny:outputinvalidated` event when an output gets invalidated, at the same time that the `recalculating` CSS class is added. (#1758, thanks [@andrewsali](https://github.com/andrewsali)!)
 
-* Addressed [#1508](https://github.com/rstudio/shiny/issues/1508): `fileInput` now permits the same file to be uploaded multiple times. ([#1719](https://github.com/rstudio/shiny/pull/1719))
+* Addressed #1508: `fileInput` now permits the same file to be uploaded multiple times. (#1719)
 
-* Addressed [#1501](https://github.com/rstudio/shiny/issues/1501): The `fileInput` control now retains uploaded file extensions on the server. This fixes [readxl](https://github.com/tidyverse/readxl)'s `readxl::read_excel` and other functions that must recognize a file's extension in order to work. ([#1706](https://github.com/rstudio/shiny/pull/1706))
+* Addressed #1501: The `fileInput` control now retains uploaded file extensions on the server. This fixes [readxl](https://github.com/tidyverse/readxl)'s `readxl::read_excel` and other functions that must recognize a file's extension in order to work. (#1706)
 
-* For `conditionalPanel`s, Shiny now gives more informative messages if there are errors evaluating or parsing the JavaScript conditional expression. ([#1727](https://github.com/rstudio/shiny/pull/1727))
+* For `conditionalPanel`s, Shiny now gives more informative messages if there are errors evaluating or parsing the JavaScript conditional expression. (#1727)
 
-* Addressed [#1586](https://github.com/rstudio/shiny/issues/1586): The `conditionalPanel` function now accepts an `ns` argument. The `ns` argument can be used in a [module](https://shiny.rstudio.com/articles/modules.html) UI function to scope the `condition` expression to the module's own input and output IDs. ([#1735](https://github.com/rstudio/shiny/pull/1735))
+* Addressed #1586: The `conditionalPanel` function now accepts an `ns` argument. The `ns` argument can be used in a [module](https://shiny.rstudio.com/articles/modules.html) UI function to scope the `condition` expression to the module's own input and output IDs. (#1735)
 
-* With `options(shiny.testmode=TRUE)`, the Shiny process will send a message to the client in response to a changed input, even if no outputs have changed. This helps to streamline testing using the shinytest package. ([#1747](https://github.com/rstudio/shiny/pull/1747))
+* With `options(shiny.testmode=TRUE)`, the Shiny process will send a message to the client in response to a changed input, even if no outputs have changed. This helps to streamline testing using the shinytest package. (#1747)
 
-* Addressed [#1738](https://github.com/rstudio/shiny/issues/1738): The `updateTextInput` and `updateTextAreaInput` functions can now update the placeholder. ([#1742](https://github.com/rstudio/shiny/pull/1742))
+* Addressed #1738: The `updateTextInput` and `updateTextAreaInput` functions can now update the placeholder. (#1742)
 
-* Converted examples to single file apps, and made updates and enhancements to comments in the example app scripts. ([#1685](https://github.com/rstudio/shiny/pull/1685))
+* Converted examples to single file apps, and made updates and enhancements to comments in the example app scripts. (#1685)
 
-* Added new `snapshotPreprocessInput()` and `snapshotPreprocessOutput()` functions, which is used for preprocessing and input and output values before taking a test snapshot. ([#1760](https://github.com/rstudio/shiny/pull/1760), [#1789](https://github.com/rstudio/shiny/pull/1789))
+* Added new `snapshotPreprocessInput()` and `snapshotPreprocessOutput()` functions, which is used for preprocessing and input and output values before taking a test snapshot. (#1760, #1789)
 
-* The HTML generated by `renderTable()` no longer includes comments with the R version, xtable version, and timestamp. ([#1771](https://github.com/rstudio/shiny/pull/1771))
+* The HTML generated by `renderTable()` no longer includes comments with the R version, xtable version, and timestamp. (#1771)
 
-* Added a function `isRunning` to test whether a Shiny app is currently running. ([#1785](https://github.com/rstudio/shiny/pull/1785))
+* Added a function `isRunning` to test whether a Shiny app is currently running. (#1785)
 
-* Added a function `setSerializer`, which allows authors to specify a function for serializing the value of a custom input. ([#1791](https://github.com/rstudio/shiny/pull/1791))
+* Added a function `setSerializer`, which allows authors to specify a function for serializing the value of a custom input. (#1791)
 
 ### Bug fixes
 
-* Fixed [#1546](https://github.com/rstudio/shiny/issues/1546): make it possible (without any hacks) to write arbitrary data into a module's `session$userData` (which is exactly the same environment as the parent's `session$userData`). To be clear, it allows something like `session$userData$x <- TRUE`, but not something like `session$userData <- TRUE` (that is not allowed in any context, whether you're in the main app, or in a module) ([#1732](https://github.com/rstudio/shiny/pull/1732)).
+* Fixed #1546: make it possible (without any hacks) to write arbitrary data into a module's `session$userData` (which is exactly the same environment as the parent's `session$userData`). To be clear, it allows something like `session$userData$x <- TRUE`, but not something like `session$userData <- TRUE` (that is not allowed in any context, whether you're in the main app, or in a module) (#1732).
 
-* Fixed [#1701](https://github.com/rstudio/shiny/issues/1701): There was a partial argument match in the `generateOptions` function. ([#1702](https://github.com/rstudio/shiny/pull/1702))
+* Fixed #1701: There was a partial argument match in the `generateOptions` function. (#1702)
 
-* Fixed [#1710](https://github.com/rstudio/shiny/issues/1710): `ReactiveVal` objects did not have separate dependents. ([#1712](https://github.com/rstudio/shiny/pull/1712))
+* Fixed #1710: `ReactiveVal` objects did not have separate dependents. (#1712)
 
-* Fixed [#1438](https://github.com/rstudio/shiny/issues/1438): `unbindAll()` should not be called when inserting content with `insertUI()`. A previous fix ([#1449](https://github.com/rstudio/shiny/pull/1449)) did not work correctly. ([#1736](https://github.com/rstudio/shiny/pull/1736))
+* Fixed #1438: `unbindAll()` should not be called when inserting content with `insertUI()`. A previous fix (#1449) did not work correctly. (#1736)
 
-* Fixed [#1755](https://github.com/rstudio/shiny/issues/1755): dynamic htmlwidgets sent the path of the package on the server to the client. ([#1756](https://github.com/rstudio/shiny/pull/1756))
+* Fixed #1755: dynamic htmlwidgets sent the path of the package on the server to the client. (#1756)
 
-* Fixed [#1763](https://github.com/rstudio/shiny/issues/1763): Shiny's private random stream leaked out into the main random stream. ([#1768](https://github.com/rstudio/shiny/pull/1768))
+* Fixed #1763: Shiny's private random stream leaked out into the main random stream. (#1768)
 
-* Fixed [#1680](https://github.com/rstudio/shiny/issues/1680): `options(warn=2)` was not respected when running an app. ([#1790](https://github.com/rstudio/shiny/pull/1790))
+* Fixed #1680: `options(warn=2)` was not respected when running an app. (#1790)
 
-* Fixed [#1772](https://github.com/rstudio/shiny/issues/1772): ensure that `runApp()` respects the `shinyApp(onStart = function())` argument. ([#1770](https://github.com/rstudio/shiny/pull/1770))
+* Fixed #1772: ensure that `runApp()` respects the `shinyApp(onStart = function())` argument. (#1770)
 
-* Fixed [#1474](https://github.com/rstudio/shiny/issues/1474): A `browser()` call in an observer could cause an error in the RStudio IDE on Windows. ([#1802](https://github.com/rstudio/shiny/pull/1802))
+* Fixed #1474: A `browser()` call in an observer could cause an error in the RStudio IDE on Windows. (#1802)
 
 
 shiny 1.0.3
@@ -368,9 +482,9 @@ This is a hotfix release of Shiny. With previous versions of Shiny, when running
 
 ### Bug fixes
 
-* Fixed [#1672](https://github.com/rstudio/shiny/issues/1672): When an error occurred while uploading a file, the progress bar did not change colors. ([#1673](https://github.com/rstudio/shiny/pull/1673))
+* Fixed #1672: When an error occurred while uploading a file, the progress bar did not change colors. (#1673)
 
-* Fixed [#1676](https://github.com/rstudio/shiny/issues/1676): On R 3.4.0, running a Shiny application gave a warning: `Warning in body(fun) : argument is not a function`. ([#1677](https://github.com/rstudio/shiny/pull/1677))
+* Fixed #1676: On R 3.4.0, running a Shiny application gave a warning: `Warning in body(fun) : argument is not a function`. (#1677)
 
 
 shiny 1.0.2
@@ -382,15 +496,15 @@ This is a hotfix release of Shiny. The primary reason for this release is becaus
 
 ### Minor new features and improvements
 
-* Added a `shiny:sessioninitialized` Javascript event, which is fired at the end of the initialize method of the Session object. This allows us to listen for this event when we want to get the value of things like `Shiny.user`. ([#1568](https://github.com/rstudio/shiny/pull/1568))
+* Added a `shiny:sessioninitialized` Javascript event, which is fired at the end of the initialize method of the Session object. This allows us to listen for this event when we want to get the value of things like `Shiny.user`. (#1568)
 
-* Fixed [#1649](https://github.com/rstudio/shiny/issues/1649): allow the `choices` argument in `checkboxGroupInput()` to be `NULL` (or `c()`) to keep backward compatibility with Shiny < 1.0.1. This will result in the same thing as providing `choices = character(0)`. ([#1652](https://github.com/rstudio/shiny/pull/1652))
+* Fixed #1649: allow the `choices` argument in `checkboxGroupInput()` to be `NULL` (or `c()`) to keep backward compatibility with Shiny < 1.0.1. This will result in the same thing as providing `choices = character(0)`. (#1652)
 
-* The official URL for accessing MathJax libraries over CDN has been deprecated and will be removed soon. We have switched to a new rstudio.com URL that we will support going forward. ([#1664](https://github.com/rstudio/shiny/pull/1664))
+* The official URL for accessing MathJax libraries over CDN has been deprecated and will be removed soon. We have switched to a new rstudio.com URL that we will support going forward. (#1664)
 
 ### Bug fixes
 
-* Fixed [#1653](https://github.com/rstudio/shiny/issues/1653): wrong code example in documentation. ([#1658](https://github.com/rstudio/shiny/pull/1658))
+* Fixed #1653: wrong code example in documentation. (#1658)
 
 
 shiny 1.0.1
@@ -406,62 +520,62 @@ This is a maintenance release of Shiny, mostly aimed at fixing bugs and introduc
 
 ### New features
 
-* Added `reactiveVal` function, for storing a single value which can be (reactively) read and written. Similar to `reactiveValues`, except that `reactiveVal` just lets you store a single value instead of storing multiple values by name. ([#1614](https://github.com/rstudio/shiny/pull/1614))
+* Added `reactiveVal` function, for storing a single value which can be (reactively) read and written. Similar to `reactiveValues`, except that `reactiveVal` just lets you store a single value instead of storing multiple values by name. (#1614)
 
 ### Minor new features and improvements
 
-* Fixed [#1637](https://github.com/rstudio/shiny/issues/1637): Outputs stay faded on MS Edge. ([#1640](https://github.com/rstudio/shiny/pull/1640))
+* Fixed #1637: Outputs stay faded on MS Edge. (#1640)
 
-* Addressed [#1348](https://github.com/rstudio/shiny/issues/1348) and [#1437](https://github.com/rstudio/shiny/issues/1437) by adding two new arguments to `radioButtons()` and `checkboxGroupInput()`: `choiceNames` (list or vector) and `choiceValues` (list or vector). These can be passed in as an alternative to `choices`, with the added benefit that the elements in `choiceNames` can be arbitrary UI (i.e. anything created by `HTML()` and the `tags()` functions, like icons and images). While the underlying values for each choice (passed in through `choiceValues`) must still be simple text, their visual representation on the app (what the user actually clicks to select a different option) can be any valid HTML element. See `?radioButtons` for a small example. ([#1521](https://github.com/rstudio/shiny/pull/1521))
+* Addressed #1348 and #1437 by adding two new arguments to `radioButtons()` and `checkboxGroupInput()`: `choiceNames` (list or vector) and `choiceValues` (list or vector). These can be passed in as an alternative to `choices`, with the added benefit that the elements in `choiceNames` can be arbitrary UI (i.e. anything created by `HTML()` and the `tags()` functions, like icons and images). While the underlying values for each choice (passed in through `choiceValues`) must still be simple text, their visual representation on the app (what the user actually clicks to select a different option) can be any valid HTML element. See `?radioButtons` for a small example. (#1521)
 
-* Updated `tools/README.md` with more detailed instructions. ([#1616](https://github.com/rstudio/shiny/pull/1616))
+* Updated `tools/README.md` with more detailed instructions. (#1616)
 
-* Fixed [#1565](https://github.com/rstudio/shiny/issues/1565), which meant that resources with spaces in their names return HTTP 404. ([#1566](https://github.com/rstudio/shiny/pull/1566))
+* Fixed #1565, which meant that resources with spaces in their names return HTTP 404. (#1566)
 
-* Exported `session$user` (if it exists) to the client-side; it's accessible in the Shiny object: `Shiny.user`. ([#1563](https://github.com/rstudio/shiny/pull/1563))
+* Exported `session$user` (if it exists) to the client-side; it's accessible in the Shiny object: `Shiny.user`. (#1563)
 
 * Added support for HTML5's `pushState` which allows for pseudo-navigation
-in shiny apps. For more info, see the documentation (`?updateQueryString` and `?getQueryString`). ([#1447](https://github.com/rstudio/shiny/pull/1447))
+in shiny apps. For more info, see the documentation (`?updateQueryString` and `?getQueryString`). (#1447)
 
-* Fixed [#1121](https://github.com/rstudio/shiny/issues/1121): plot interactions with ggplot2 now support `coord_fixed()`. ([#1525](https://github.com/rstudio/shiny/pull/1525))
+* Fixed #1121: plot interactions with ggplot2 now support `coord_fixed()`. (#1525)
 
-* Added `snapshotExclude` function, which marks an output so that it is not recorded in a test snapshot. ([#1559](https://github.com/rstudio/shiny/pull/1559))
+* Added `snapshotExclude` function, which marks an output so that it is not recorded in a test snapshot. (#1559)
 
-* Added `shiny:filedownload` JavaScript event, which is triggered when a `downloadButton` or `downloadLink` is clicked. Also, the values of `downloadHandler`s are not recorded in test snapshots, because the values change every time the application is run. ([#1559](https://github.com/rstudio/shiny/pull/1559))
+* Added `shiny:filedownload` JavaScript event, which is triggered when a `downloadButton` or `downloadLink` is clicked. Also, the values of `downloadHandler`s are not recorded in test snapshots, because the values change every time the application is run. (#1559)
 
-* Added support for plot interactions with ggplot2 > 2.2.1. ([#1578](https://github.com/rstudio/shiny/pull/1578))
+* Added support for plot interactions with ggplot2 > 2.2.1. (#1578)
 
-* Fixed [#1577](https://github.com/rstudio/shiny/issues/1577): Improved `escapeHTML` (util.js) in terms of the order dependency of replacing, XSS risk attack and performance. ([#1579](https://github.com/rstudio/shiny/pull/1579))
+* Fixed #1577: Improved `escapeHTML` (util.js) in terms of the order dependency of replacing, XSS risk attack and performance. (#1579)
 
-* The `shiny:inputchanged` JavaScript event now includes two new fields, `binding` and `el`, which contain the input binding and DOM element, respectively. Additionally, `Shiny.onInputChange()` now accepts an optional argument, `opts`, which can contain the same fields. ([#1596](https://github.com/rstudio/shiny/pull/1596))
+* The `shiny:inputchanged` JavaScript event now includes two new fields, `binding` and `el`, which contain the input binding and DOM element, respectively. Additionally, `Shiny.onInputChange()` now accepts an optional argument, `opts`, which can contain the same fields. (#1596)
 
-* The `NS()` function now returns a vectorized function. ([#1613](https://github.com/rstudio/shiny/pull/1613))
+* The `NS()` function now returns a vectorized function. (#1613)
 
-* Fixed [#1617](https://github.com/rstudio/shiny/issues/1617): `fileInput` can have customized text for the button and the placeholder. ([#1619](https://github.com/rstudio/shiny/pull/1619))
+* Fixed #1617: `fileInput` can have customized text for the button and the placeholder. (#1619)
 
 ### Bug fixes
 
-* Fixed [#1511](https://github.com/rstudio/shiny/issues/1511): `fileInput`s did not trigger the `shiny:inputchanged` event on the client. Also removed `shiny:fileuploaded` JavaScript event, because it is no longer needed after this fix. ([#1541](https://github.com/rstudio/shiny/pull/1541), [#1570](https://github.com/rstudio/shiny/pull/1570))
+* Fixed #1511: `fileInput`s did not trigger the `shiny:inputchanged` event on the client. Also removed `shiny:fileuploaded` JavaScript event, because it is no longer needed after this fix. (#1541, #1570)
 
-* Fixed [#1472](https://github.com/rstudio/shiny/issues/1472): With a Progress object, calling `set(value=NULL)` made the progress bar go to 100%. Now it does not change the value of the progress bar. The documentation also incorrectly said that setting the `value` to `NULL` would hide the progress bar. ([#1547](https://github.com/rstudio/shiny/pull/1547))
+* Fixed #1472: With a Progress object, calling `set(value=NULL)` made the progress bar go to 100%. Now it does not change the value of the progress bar. The documentation also incorrectly said that setting the `value` to `NULL` would hide the progress bar. (#1547)
 
-* Fixed [#162](https://github.com/rstudio/shiny/issues/162): When a dynamically-generated input changed to a different `inputType`, it might be incorrectly deduplicated.  ([#1594](https://github.com/rstudio/shiny/pull/1594))
+* Fixed #162: When a dynamically-generated input changed to a different `inputType`, it might be incorrectly deduplicated.  (#1594)
 
-* Removed redundant call to `inputs.setInput`. ([#1595](https://github.com/rstudio/shiny/pull/1595))
+* Removed redundant call to `inputs.setInput`. (#1595)
 
-* Fixed bug where `dateRangeInput` did not respect `weekstart` argument. ([#1592](https://github.com/rstudio/shiny/pull/1592))
+* Fixed bug where `dateRangeInput` did not respect `weekstart` argument. (#1592)
 
-* Fixed [#1598](https://github.com/rstudio/shiny/issues/1598): `setBookmarkExclude()` did not work properly inside of modules. ([#1599](https://github.com/rstudio/shiny/pull/1599))
+* Fixed #1598: `setBookmarkExclude()` did not work properly inside of modules. (#1599)
 
-* Fixed [#1605](https://github.com/rstudio/shiny/issues/1605): sliders did not move when clicked on the bar area. ([#1610](https://github.com/rstudio/shiny/pull/1610))
+* Fixed #1605: sliders did not move when clicked on the bar area. (#1610)
 
-* Fixed [#1621](https://github.com/rstudio/shiny/issues/1621): if a `reactiveTimer`'s session was closed before the first time that the `reactiveTimer` fired, then the `reactiveTimer` would not get cleared and would keep firing indefinitely. ([#1623](https://github.com/rstudio/shiny/pull/1623))
+* Fixed #1621: if a `reactiveTimer`'s session was closed before the first time that the `reactiveTimer` fired, then the `reactiveTimer` would not get cleared and would keep firing indefinitely. (#1623)
 
-* Fixed [#1634](https://github.com/rstudio/shiny/issues/1634): If brushing on a plot causes the plot to redraw, then the redraw could in turn trigger the plot to redraw again and again. This was due to spurious changes in values of floating point numbers. ([#1641](https://github.com/rstudio/shiny/pull/1641))
+* Fixed #1634: If brushing on a plot causes the plot to redraw, then the redraw could in turn trigger the plot to redraw again and again. This was due to spurious changes in values of floating point numbers. (#1641)
 
 ### Library updates
 
-* Closed [#1500](https://github.com/rstudio/shiny/issues/1500): Updated ion.rangeSlider to 2.1.6. ([#1540](https://github.com/rstudio/shiny/pull/1540))
+* Closed #1500: Updated ion.rangeSlider to 2.1.6. (#1540)
 
 
 shiny 1.0.0
@@ -473,57 +587,57 @@ Here are some highlights from this release. For more details, see the full chang
 
 ## Support for testing Shiny applications
 
-Shiny now supports automated testing of applications, with the [shinytest](https://github.com/rstudio/shinytest) package. Shinytest has not yet been released on CRAN, but will be soon. ([#18](https://github.com/rstudio/shiny/issues/18), [#1464](https://github.com/rstudio/shiny/pull/1464))
+Shiny now supports automated testing of applications, with the [shinytest](https://github.com/rstudio/shinytest) package. Shinytest has not yet been released on CRAN, but will be soon. (#18, #1464)
 
 ## Debounce/throttle reactives
 
-Now there's an official way to slow down reactive values and expressions that invalidate too quickly. Pass a reactive expression to the new `debounce` or `throttle` function, and get back a modified reactive expression that doesn't invalidate as often. ([#1510](https://github.com/rstudio/shiny/pull/1510))
+Now there's an official way to slow down reactive values and expressions that invalidate too quickly. Pass a reactive expression to the new `debounce` or `throttle` function, and get back a modified reactive expression that doesn't invalidate as often. (#1510)
 
 ## Full changelog
 
 ### Breaking changes
 
-* Added a new `placeholder` argument to `verbatimTextOutput()`. The default is `FALSE`, which means that, if there is no content for this output, no representation of this slot will be made in the UI. Previsouly, even if there was no content, you'd see an empty rectangle in the UI that served as a placeholder. You can set `placeholder = TRUE` to revert back to that look. ([#1480](https://github.com/rstudio/shiny/pull/1480))
+* Added a new `placeholder` argument to `verbatimTextOutput()`. The default is `FALSE`, which means that, if there is no content for this output, no representation of this slot will be made in the UI. Previsouly, even if there was no content, you'd see an empty rectangle in the UI that served as a placeholder. You can set `placeholder = TRUE` to revert back to that look. (#1480)
 
 ### New features
 
-* Added support for testing Shiny applications with the shinytest package. ([#18](https://github.com/rstudio/shiny/issues/18), [#1464](https://github.com/rstudio/shiny/pull/1464))
+* Added support for testing Shiny applications with the shinytest package. (#18, #1464)
 
-* Added `debounce` and `throttle` functions, to control the rate at which reactive values and expressions invalidate. ([#1510](https://github.com/rstudio/shiny/pull/1510))
+* Added `debounce` and `throttle` functions, to control the rate at which reactive values and expressions invalidate. (#1510)
 
 ### Minor new features and improvements
 
-* Addressed [#1486](https://github.com/rstudio/shiny/issues/1486) by adding a new argument to `observeEvent` and `eventReactive`, called `ignoreInit` (defaults to `FALSE` for backwards compatibility). When set to `TRUE`, the action (i.e. the second argument: `handlerExpr` and `valueExpr`, respectively) will not be triggered when the observer/reactive is first created/initialized. In other words, `ignoreInit = TRUE` ensures that the `observeEvent` (or `eventReactive`) is *never* run right away. For more info, see the documentation (`?observeEvent`). ([#1494](https://github.com/rstudio/shiny/pull/1494))
+* Addressed #1486 by adding a new argument to `observeEvent` and `eventReactive`, called `ignoreInit` (defaults to `FALSE` for backwards compatibility). When set to `TRUE`, the action (i.e. the second argument: `handlerExpr` and `valueExpr`, respectively) will not be triggered when the observer/reactive is first created/initialized. In other words, `ignoreInit = TRUE` ensures that the `observeEvent` (or `eventReactive`) is *never* run right away. For more info, see the documentation (`?observeEvent`). (#1494)
 
-* Added a new argument to `observeEvent` called `once`. When set to `TRUE`, it results in the observer being destroyed (stop observing) after the first time that `handlerExpr` is run (i.e. `once = TRUE` guarantees that the observer only runs, at most, once). For more info, see the documentation (`?observeEvent`). ([#1494](https://github.com/rstudio/shiny/pull/1494))
+* Added a new argument to `observeEvent` called `once`. When set to `TRUE`, it results in the observer being destroyed (stop observing) after the first time that `handlerExpr` is run (i.e. `once = TRUE` guarantees that the observer only runs, at most, once). For more info, see the documentation (`?observeEvent`). (#1494)
 
-* Addressed [#1358](https://github.com/rstudio/shiny/issues/1358): more informative error message when calling `runApp()` inside of an app's app.R (or inside ui.R or server.R). ([#1482](https://github.com/rstudio/shiny/pull/1482))
+* Addressed #1358: more informative error message when calling `runApp()` inside of an app's app.R (or inside ui.R or server.R). (#1482)
 
-* Added a more descriptive JS warning for `insertUI()` when the selector argument does not match anything in DOM. ([#1488](https://github.com/rstudio/shiny/pull/1488))
+* Added a more descriptive JS warning for `insertUI()` when the selector argument does not match anything in DOM. (#1488)
 
-* Added support for injecting JavaScript code when the `shiny.testmode` option is set to `TRUE`. This makes it possible to record test events interactively. ([#1464](https://github.com/rstudio/shiny/pull/1464))
+* Added support for injecting JavaScript code when the `shiny.testmode` option is set to `TRUE`. This makes it possible to record test events interactively. (#1464)
 
-* Added ability through arguments to the `a` tag function called inside `downloadButton()` and `downloadLink()`. Closes [#986](https://github.com/rstudio/shiny/issues/986). ([#1492](https://github.com/rstudio/shiny/pulls/1492))
+* Added ability through arguments to the `a` tag function called inside `downloadButton()` and `downloadLink()`. Closes #986. (#1492)
 
-* Implemented [#1512](https://github.com/rstudio/shiny/issues/1512): added a `userData` environment to `session`, for storing arbitrary session-related variables. Generally, session-scoped variables are created just by declaring normal variables that are local to the Shiny server function, but `session$userData` may be more convenient for some advanced scenarios. ([#1513](https://github.com/rstudio/shiny/pull/1513))
+* Implemented #1512: added a `userData` environment to `session`, for storing arbitrary session-related variables. Generally, session-scoped variables are created just by declaring normal variables that are local to the Shiny server function, but `session$userData` may be more convenient for some advanced scenarios. (#1513)
 
-* Relaxed naming requirements for `addResourcePath()` (the first character no longer needs to be a letter). ([#1529](https://github.com/rstudio/shiny/pull/1529))
+* Relaxed naming requirements for `addResourcePath()` (the first character no longer needs to be a letter). (#1529)
 
 ### Bug fixes
 
-* Fixed [#969](https://github.com/rstudio/shiny/issues/969): allow navbarPage's `fluid` param to control both containers. ([#1481](https://github.com/rstudio/shiny/pull/1481))
+* Fixed #969: allow navbarPage's `fluid` param to control both containers. (#1481)
 
-* Fixed [#1438](https://github.com/rstudio/shiny/issues/1438): `unbindAll()` should not be called when inserting content with `insertUI()` ([#1449](https://github.com/rstudio/shiny/pull/1449))
+* Fixed #1438: `unbindAll()` should not be called when inserting content with `insertUI()` (#1449)
 
-* Fixed bug causing `<meta>` tags associated with HTML dependencies of Shiny R Markdown files to be rendered incorrectly. ([#1463](https://github.com/rstudio/shiny/pull/1463))
+* Fixed bug causing `<meta>` tags associated with HTML dependencies of Shiny R Markdown files to be rendered incorrectly. (#1463)
 
-* Fixed [#1359](https://github.com/rstudio/shiny/issues/1359): `shinyApp()` options argument ignored when passed to `runApp()`. ([#1483](https://github.com/rstudio/shiny/pull/1483))
+* Fixed #1359: `shinyApp()` options argument ignored when passed to `runApp()`. (#1483)
 
-* Fixed [#117](https://github.com/rstudio/shiny/issues/117): Reactive expressions now release references to cached values as soon as they are invalidated, potentially making those cached values eligible for garbage collection sooner. Previously, this would not occur until the next cached value was calculated and stored. ([#1504](https://github.com/rstudio/shiny/pull/1504/files))
+* Fixed #117: Reactive expressions now release references to cached values as soon as they are invalidated, potentially making those cached values eligible for garbage collection sooner. Previously, this would not occur until the next cached value was calculated and stored. (#1504)
 
-* Fixed [#1013](https://github.com/rstudio/shiny/issues/1013): `flushReact` should be called after app loads. Observers set up outside of server functions were not running until after the first user connects. ([#1503](https://github.com/rstudio/shiny/pull/1503))
+* Fixed #1013: `flushReact` should be called after app loads. Observers set up outside of server functions were not running until after the first user connects. (#1503)
 
-* Fixed [#1453](https://github.com/rstudio/shiny/issues/1453): When using a modal dialog with `easyClose=TRUE` in a Shiny gadget, pressing Esc would close both the modal and the gadget. Now pressing Esc only closes the modal. ([#1523](https://github.com/rstudio/shiny/pull/1523))
+* Fixed #1453: When using a modal dialog with `easyClose=TRUE` in a Shiny gadget, pressing Esc would close both the modal and the gadget. Now pressing Esc only closes the modal. (#1523)
 
 ### Library updates
 
@@ -539,25 +653,25 @@ This is a maintenance release of Shiny, with some bug fixes and minor new featur
 
 ### Minor new features and improvements
 
-* Added a `fade` argument to `modalDialog()` -- setting it to `FALSE` will remove the usual fade-in animation for that modal window. ([#1414](https://github.com/rstudio/shiny/pull/1414))
+* Added a `fade` argument to `modalDialog()` -- setting it to `FALSE` will remove the usual fade-in animation for that modal window. (#1414)
 
-* Fixed a "duplicate binding" error that occurred in some edge cases involving `insertUI` and nested `uiOutput`. ([#1402](https://github.com/rstudio/shiny/pull/1402))
+* Fixed a "duplicate binding" error that occurred in some edge cases involving `insertUI` and nested `uiOutput`. (#1402)
 
-* Fixed [#1422](https://github.com/rstudio/shiny/issues/1422): When using the `shiny.trace` option, allow specifying to only log SEND or RECV messages, or both. (PR [#1428](https://github.com/rstudio/shiny/pull/1428))
+* Fixed #1422: When using the `shiny.trace` option, allow specifying to only log SEND or RECV messages, or both. (PR #1428)
 
-* Fixed [#1419](https://github.com/rstudio/shiny/issues/1419): Allow overriding a JS custom message handler. (PR [#1445](https://github.com/rstudio/shiny/pull/1445))
+* Fixed #1419: Allow overriding a JS custom message handler. (PR #1445)
 
-* Added `exportTestValues()` function, which allows a test driver to query the session for values internal to an application's server function. This only has an effect if the `shiny.testmode` option is set to `TRUE`. ([#1436](https://github.com/rstudio/shiny/pull/1436))
+* Added `exportTestValues()` function, which allows a test driver to query the session for values internal to an application's server function. This only has an effect if the `shiny.testmode` option is set to `TRUE`. (#1436)
 
 ### Bug fixes
 
-* Fixed [#1427](https://github.com/rstudio/shiny/issues/1427): make sure that modals do not close incorrectly when an element inside them is triggered as hidden. ([#1430](https://github.com/rstudio/shiny/pull/1430))
+* Fixed #1427: make sure that modals do not close incorrectly when an element inside them is triggered as hidden. (#1430)
 
-* Fixed [#1404](https://github.com/rstudio/shiny/issues/1404): stack trace tests were not compatible with the byte-code compiler in R-devel, which now tracks source references.
+* Fixed #1404: stack trace tests were not compatible with the byte-code compiler in R-devel, which now tracks source references.
 
-* `sliderInputBinding.setValue()` now sends a slider's value immediately, instead of waiting for the usual 250ms debounce delay. ([#1429](https://github.com/rstudio/shiny/pull/1429))
+* `sliderInputBinding.setValue()` now sends a slider's value immediately, instead of waiting for the usual 250ms debounce delay. (#1429)
 
-* Fixed a bug where, in versions of R before 3.2, Shiny applications could crash due to a bug in R's implementation of `list2env()`. ([#1446](https://github.com/rstudio/shiny/pull/1446))
+* Fixed a bug where, in versions of R before 3.2, Shiny applications could crash due to a bug in R's implementation of `list2env()`. (#1446)
 
 shiny 0.14.1
 ============
@@ -568,26 +682,26 @@ This is a maintenance release of Shiny, with some bug fixes and minor new featur
 
 ### Minor new features and improvements
 
-* Restored file inputs are now copied on restore, so that the restored application can't modify the bookmarked file. ([#1370](https://github.com/rstudio/shiny/issues/1370))
+* Restored file inputs are now copied on restore, so that the restored application can't modify the bookmarked file. (#1370)
 
-* Added support for plot interaction in the development version of ggplot2, 2.1.0.9000. Also added support for ggplot2 plots with `coord_flip()` (in the development version of ggplot2). ([hadley/ggplot2#1781](https://github.com/hadley/ggplot2/issues/1781), [#1392](https://github.com/rstudio/shiny/pull/1392))
+* Added support for plot interaction in the development version of ggplot2, 2.1.0.9000. Also added support for ggplot2 plots with `coord_flip()` (in the development version of ggplot2). ([hadley/ggplot2#1781](https://github.com/hadley/ggplot2/issues/1781), #1392)
 
 
 ### Bug fixes
 
-* Fixed [#1093](https://github.com/rstudio/shiny/issues/1093) better: `updateRadioButtons()` and `updateCheckboxGroupInput()` were not working correctly if the choices were given as a numeric vector. This had been solved in [#1291](https://github.com/rstudio/shiny/pull/1291), but that introduced a different bug [#1396](https://github.com/rstudio/shiny/issues/1396) that this better fix avoids. ([#1370](https://github.com/rstudio/shiny/pull/1397))
+* Fixed #1093 better: `updateRadioButtons()` and `updateCheckboxGroupInput()` were not working correctly if the choices were given as a numeric vector. This had been solved in #1291, but that introduced a different bug #1396 that this better fix avoids. (#1370)
 
-* Fixed [#1368](https://github.com/rstudio/shiny/issues/1368): If an app with a file input was bookmarked and restored, and then the restored app was bookmarked and restored (without uploading a new file), then it would fail to restore the file the second time. ([#1370](https://github.com/rstudio/shiny/pull/1370))
+* Fixed #1368: If an app with a file input was bookmarked and restored, and then the restored app was bookmarked and restored (without uploading a new file), then it would fail to restore the file the second time. (#1370)
 
-* Fixed [#1369](https://github.com/rstudio/shiny/issues/1369): `sliderInput()` did not allow showing numbers without a thousands separator.
+* Fixed #1369: `sliderInput()` did not allow showing numbers without a thousands separator.
 
-* Fixed [#1346](https://github.com/rstudio/shiny/issues/1346) and [#1107](https://github.com/rstudio/shiny/issues/1107) : jQuery UI's datepicker conflicted with the bootstrap-datepicker used by Shiny's `dateInput()` and `dateRangeInput()`. ([#1374](https://github.com/rstudio/shiny/pull/1374))
+* Fixed #1346 and #1107 : jQuery UI's datepicker conflicted with the bootstrap-datepicker used by Shiny's `dateInput()` and `dateRangeInput()`. (#1374)
 
 ### Library updates
 
-* Updated to bootstrap-datepicker 1.6.4. ([#1218](https://github.com/rstudio/shiny/issues/1218), [#1374](https://github.com/rstudio/shiny/pull/1374))
+* Updated to bootstrap-datepicker 1.6.4. (#1218, #1374)
 
-* Updated to jQuery UI 1.12.1. Previously, Shiny included a build of 1.11.4 which was missing the datepicker component due to a conflict with the bootstrap-datepicker used by Shiny's `dateInput()` and `dateRangeInput()`. ([#1374](https://github.com/rstudio/shiny/pull/1374))
+* Updated to jQuery UI 1.12.1. Previously, Shiny included a build of 1.11.4 which was missing the datepicker component due to a conflict with the bootstrap-datepicker used by Shiny's `dateInput()` and `dateRangeInput()`. (#1374)
 
 
 shiny 0.14
@@ -659,7 +773,7 @@ There are many more minor features, small improvements, and bug fixes than we ca
 
 *    **Error Sanitization**: you now have the option to sanitize error messages; in other words, the content of the original error message can be suppressed so that it doesn't leak any sensitive information. To sanitize errors everywhere in your app, just add `options(shiny.sanitize.errors = TRUE)` somewhere in your app. Read [this article](http://shiny.rstudio.com/articles/sanitize-errors.html) for more, or play with the [demo app](https://gallery.shinyapps.io/110-error-sanitization/).
 
-*    **Code Diagnostics**: if there is an error parsing `ui.R`, `server.R`, `app.R`, or `global.R`, Shiny will search the code for missing commas, extra commas, and unmatched braces, parens, and brackets, and will print out messages pointing out those problems. ([#1126](https://github.com/rstudio/shiny/pull/1126))
+*    **Code Diagnostics**: if there is an error parsing `ui.R`, `server.R`, `app.R`, or `global.R`, Shiny will search the code for missing commas, extra commas, and unmatched braces, parens, and brackets, and will print out messages pointing out those problems. (#1126)
 
 *    **Reactlog visualization**: by default, the [`showReactLog()` function](http://shiny.rstudio.com/reference/shiny/latest/reactlog.html) (which brings up the reactive graph) also displays the time that each reactive and observer were active for:
 
@@ -683,99 +797,99 @@ There are many more minor features, small improvements, and bug fixes than we ca
 
 ### Breaking changes
 
-* Progress indicators can now either use the new notification API, using `style = "notification"` (default), or be displayed with the previous styling, using `style = "old"`. You can also call `shinyOptions(progress.style = "old")` in the server function to make all progress indicators use the old styling. Note that if you had customized your progress indicators with additional CSS, you'll need to use the old style if you want your UI to look the same ([#1160](https://github.com/rstudio/shiny/pull/1160) and [#1329](https://github.com/rstudio/shiny/pull/1329)).
+* Progress indicators can now either use the new notification API, using `style = "notification"` (default), or be displayed with the previous styling, using `style = "old"`. You can also call `shinyOptions(progress.style = "old")` in the server function to make all progress indicators use the old styling. Note that if you had customized your progress indicators with additional CSS, you'll need to use the old style if you want your UI to look the same (#1160 and #1329).
 
-* Closed [#1161](https://github.com/rstudio/shiny/issues/1161): Deprecated the `position` argument to `tabsetPanel()` since Bootstrap 3 stopped supporting this feature.
+* Closed #1161: Deprecated the `position` argument to `tabsetPanel()` since Bootstrap 3 stopped supporting this feature.
 
 * The long-deprecated ability to pass a `func` argument to many of the `render` functions has been removed.
 
 ### New features
 
-* Added the ability to bookmark and restore application state. (main PR: [#1209](https://github.com/rstudio/shiny/pull/1209))
+* Added the ability to bookmark and restore application state. (main PR: #1209)
 
-* Added a new notification API. From R, there are new functions `showNotification` and `hideNotification`. From JavaScript, there is a new `Shiny.notification` object that controls notifications. ([#1141](https://github.com/rstudio/shiny/pull/1141))
+* Added a new notification API. From R, there are new functions `showNotification` and `hideNotification`. From JavaScript, there is a new `Shiny.notification` object that controls notifications. (#1141)
 
-* Progress indicators now use the notification API. ([#1160](https://github.com/rstudio/shiny/pull/1160))
+* Progress indicators now use the notification API. (#1160)
 
-* Added the ability for the client browser to reconnect to a new session on the server, by setting `session$allowReconnect(TRUE)`. This requires a version of Shiny Server that supports reconnections. ([#1074](https://github.com/rstudio/shiny/pull/1074))
+* Added the ability for the client browser to reconnect to a new session on the server, by setting `session$allowReconnect(TRUE)`. This requires a version of Shiny Server that supports reconnections. (#1074)
 
-* Added modal dialogs. ([#1157](https://github.com/rstudio/shiny/pull/1157))
+* Added modal dialogs. (#1157)
 
-* Added insertUI and removeUI functions to be able to add and remove chunks of UI, standalone, and all independent of one another. ([#1174](https://github.com/rstudio/shiny/pull/1174) and [#1189](https://github.com/rstudio/shiny/pull/1189))
+* Added insertUI and removeUI functions to be able to add and remove chunks of UI, standalone, and all independent of one another. (#1174 and #1189)
 
-* Improved `renderTable()` function to make the tables look prettier and also provide the user with a lot more parameters to customize their tables with. ([#1129](https://github.com/rstudio/shiny/pull/1129))
+* Improved `renderTable()` function to make the tables look prettier and also provide the user with a lot more parameters to customize their tables with. (#1129)
 
-* Added support for the `pool` package (use Shiny's timer/scheduler). ([#1226](https://github.com/rstudio/shiny/pull/1226))
+* Added support for the `pool` package (use Shiny's timer/scheduler). (#1226)
 
 ### Minor new features and improvements
 
-* Added `cancelOutput` argument to `req()`. This causes the currently executing reactive to cancel its execution, and leave its previous state alone (as opposed to clearing the output). ([#1272](https://github.com/rstudio/shiny/pull/1272))
+* Added `cancelOutput` argument to `req()`. This causes the currently executing reactive to cancel its execution, and leave its previous state alone (as opposed to clearing the output). (#1272)
 
-* `Display: Showcase` now displays the .js, .html and .css files in the `www` directory by default. In order to use showcase mode and not display these, include a new line in your Description file: `IncludeWWW: False`. ([#1185](https://github.com/rstudio/shiny/pull/1185))
+* `Display: Showcase` now displays the .js, .html and .css files in the `www` directory by default. In order to use showcase mode and not display these, include a new line in your Description file: `IncludeWWW: False`. (#1185)
 
-* Added an error sanitization option: `options(shiny.sanitize.errors = TRUE)`. By default, this option is `FALSE`. When `TRUE`, normal errors will be sanitized, displaying only a generic error message. This changes the look of an app when errors are printed (but the console log remains the same). ([#1156](https://github.com/rstudio/shiny/pull/1156))
+* Added an error sanitization option: `options(shiny.sanitize.errors = TRUE)`. By default, this option is `FALSE`. When `TRUE`, normal errors will be sanitized, displaying only a generic error message. This changes the look of an app when errors are printed (but the console log remains the same). (#1156)
 
-* Added the option of passing arguments to an `xxxOutput()` function through the corresponding `renderXXX()` function via an `outputArgs` parameter to the latter. This is only valid for snippets of Shiny code in an interactive `runtime: shiny` Rmd document (never for full apps, even if embedded in an Rmd). ([#1443](https://github.com/rstudio/shiny/pull/1143))
+* Added the option of passing arguments to an `xxxOutput()` function through the corresponding `renderXXX()` function via an `outputArgs` parameter to the latter. This is only valid for snippets of Shiny code in an interactive `runtime: shiny` Rmd document (never for full apps, even if embedded in an Rmd). (#1443)
 
-* Added `updateActionButton()` function, so the user can change an `actionButton`'s (or `actionLink`'s) label and/or icon. It also checks that the icon argument (for both creation and updating of a button) is valid and throws a warning otherwise. ([#1134](https://github.com/rstudio/shiny/pull/1134))
+* Added `updateActionButton()` function, so the user can change an `actionButton`'s (or `actionLink`'s) label and/or icon. It also checks that the icon argument (for both creation and updating of a button) is valid and throws a warning otherwise. (#1134)
 
-* Added code diagnostics: if there is an error parsing ui.R, server.R, app.R, or global.R, Shiny will search the code for missing commas, extra commas, and unmatched braces, parens, and brackets, and will print out messages pointing out those problems. ([#1126](https://github.com/rstudio/shiny/pull/1126))
+* Added code diagnostics: if there is an error parsing ui.R, server.R, app.R, or global.R, Shiny will search the code for missing commas, extra commas, and unmatched braces, parens, and brackets, and will print out messages pointing out those problems. (#1126)
 
-* Added support for horizontal dividers in `navbarMenu`. ([#1147](https://github.com/rstudio/shiny/pull/1147))
+* Added support for horizontal dividers in `navbarMenu`. (#1147)
 
-* Added `placeholder` option to `passwordInput`. ([#1152](https://github.com/rstudio/shiny/pull/1152))
+* Added `placeholder` option to `passwordInput`. (#1152)
 
-* Added `session$resetBrush(brushId)` (R) and `Shiny.resetBrush(brushId)` (JS) to programatically clear brushes from `imageOutput`/`plotOutput`. ([#1197](https://github.com/rstudio/shiny/pull/1197))
+* Added `session$resetBrush(brushId)` (R) and `Shiny.resetBrush(brushId)` (JS) to programatically clear brushes from `imageOutput`/`plotOutput`. (#1197)
 
-* Added textAreaInput. (thanks, [@nuno-agostinho](https://github.com/nuno-agostinho)! [#1300](https://github.com/rstudio/shiny/pull/1300))
+* Added textAreaInput. (thanks, [@nuno-agostinho](https://github.com/nuno-agostinho)! #1300)
 
-* Added `session$sendBinaryMessage(type, message)` method for sending custom binary data to the client. See `?session`. (thanks, [@daef](https://github.com/daef)! [#1316](https://github.com/rstudio/shiny/pull/1316) and [#1320](https://github.com/rstudio/shiny/pull/1320))
+* Added `session$sendBinaryMessage(type, message)` method for sending custom binary data to the client. See `?session`. (thanks, [@daef](https://github.com/daef)! #1316 and #1320)
 
-* Almost all code examples now have a runnable example with `shinyApp()`, so that users can run the examples and see them in action. ([#1158](https://github.com/rstudio/shiny/pull/1158))
+* Almost all code examples now have a runnable example with `shinyApp()`, so that users can run the examples and see them in action. (#1158)
 
-* When resized, plots are drawn with `replayPlot()`, instead of re-executing all plotting code. This results in faster plot rendering. ([#1112](https://github.com/rstudio/shiny/pull/1112))
+* When resized, plots are drawn with `replayPlot()`, instead of re-executing all plotting code. This results in faster plot rendering. (#1112)
 
-* Exported the `isTruthy()` function. (part of PR [#1272](https://github.com/rstudio/shiny/pull/1272))
+* Exported the `isTruthy()` function. (part of PR #1272)
 
-* Reactive log now shows elapsed time for reactives and observers. ([#1132](https://github.com/rstudio/shiny/pull/1132))
+* Reactive log now shows elapsed time for reactives and observers. (#1132)
 
-* Nodes in the reactlog visualization are now sticky if the user drags them. ([#1283](https://github.com/rstudio/shiny/pull/1283))
+* Nodes in the reactlog visualization are now sticky if the user drags them. (#1283)
 
 ### Bug fixes
 
-* Fixed [#1350](https://github.com/rstudio/shiny/issues/1350): Highlighting of reactives didn't work in showcase mode.
+* Fixed #1350: Highlighting of reactives didn't work in showcase mode.
 
-* Fixed [#1331](https://github.com/rstudio/shiny/issues/1331): `renderPlot()` now correctly records and replays plots when `execOnResize = FALSE`.
+* Fixed #1331: `renderPlot()` now correctly records and replays plots when `execOnResize = FALSE`.
 
-* `updateDateInput()` and `updateDateRangeInput()` can now clear the date input fields. (thanks, [@gaborcsardi](https://github.com/gaborcsardi)! [#1299](https://github.com/rstudio/shiny/pull/1299), [#1315](https://github.com/rstudio/shiny/pull/1315) and  [#1317](https://github.com/rstudio/shiny/pull/1317))
+* `updateDateInput()` and `updateDateRangeInput()` can now clear the date input fields. (thanks, [@gaborcsardi](https://github.com/gaborcsardi)! #1299, #1315 and  #1317)
 
-* Fixed [#561](https://github.com/rstudio/shiny/issues/561): DataTables previously might pop up a warning when the data was updated extremely frequently.
+* Fixed #561: DataTables previously might pop up a warning when the data was updated extremely frequently.
 
-* Fixed [#776](https://github.com/rstudio/shiny/issues/776): In some browsers, plots sometimes flickered when updated.
+* Fixed #776: In some browsers, plots sometimes flickered when updated.
 
-* Fixed [#543](https://github.com/rstudio/shiny/issues/543) and [#855](https://github.com/rstudio/shiny/issues/855): When `navbarPage()` had a `navbarMenu()` as the first item, it did not automatically select an item.
+* Fixed #543 and #855: When `navbarPage()` had a `navbarMenu()` as the first item, it did not automatically select an item.
 
-* Fixed [#970](https://github.com/rstudio/shiny/issues/970): `navbarPage()` previously did not have an option to set the selected tab.
+* Fixed #970: `navbarPage()` previously did not have an option to set the selected tab.
 
-* Fixed [#1253](https://github.com/rstudio/shiny/issues/1253): Memory could leak when an observer was destroyed without first being invalidated.
+* Fixed #1253: Memory could leak when an observer was destroyed without first being invalidated.
 
-* Fixed [#931](https://github.com/rstudio/shiny/issues/931): Nested observers could leak memory.
+* Fixed #931: Nested observers could leak memory.
 
-* Fixed [#1144](https://github.com/rstudio/shiny/issues/1144): `updateRadioButton()` and `updateCheckboxGroupInput()` broke controls when used in modules (thanks, [@sipemu](https://github.com/sipemu)!).
+* Fixed #1144: `updateRadioButton()` and `updateCheckboxGroupInput()` broke controls when used in modules (thanks, [@sipemu](https://github.com/sipemu)!).
 
-* Fixed [#1093](https://github.com/rstudio/shiny/issues/1093): `updateRadioButtons()` and `updateCheckboxGroupInput()` didn't work if `choices` was numeric vector.
+* Fixed #1093: `updateRadioButtons()` and `updateCheckboxGroupInput()` didn't work if `choices` was numeric vector.
 
-* Fixed [#1122](https://github.com/rstudio/shiny/issues/1122): `downloadHandler()` popped up empty browser window if the file wasn't present. It now gives a 404 error code.
+* Fixed #1122: `downloadHandler()` popped up empty browser window if the file wasn't present. It now gives a 404 error code.
 
-* Fixed [#1278](https://github.com/rstudio/shiny/issues/1278): Reactive system was being flushed too often (usually this just means a more-expensive no-op than necessary).
+* Fixed #1278: Reactive system was being flushed too often (usually this just means a more-expensive no-op than necessary).
 
-* Fixed [#803](https://github.com/rstudio/shiny/issues/803) and [#1179](https://github.com/rstudio/shiny/issues/1179): handling malformed dates in `dateInput` and `updateDateInput()`.
+* Fixed #803 and #1179: handling malformed dates in `dateInput` and `updateDateInput()`.
 
-* Fixed [#1257](https://github.com/rstudio/shiny/issues/1257): `updateSelectInput()` didn't work correctly in IE 11 and Edge.
+* Fixed #1257: `updateSelectInput()` didn't work correctly in IE 11 and Edge.
 
-* Fixed [#971](https://github.com/rstudio/shiny/issues/971): `runApp()` would give confusing error if `port` was not numeric.
+* Fixed #971: `runApp()` would give confusing error if `port` was not numeric.
 
-* Shiny now avoids using ports that Chrome deems unsafe. ([#1222](https://github.com/rstudio/shiny/pull/1222))
+* Shiny now avoids using ports that Chrome deems unsafe. (#1222)
 
 * Added workaround for quartz graphics device resolution bug, where resolution is hard-coded to 72 ppi.
 

R/app-state.R

@@ -0,0 +1,26 @@
+#' @include globals.R
+NULL
+
+# The current app state is a place to read and hang state for the
+# currently-running application. This is useful for setting options that will
+# last as long as the application is running.
+
+.globals$appState <- NULL
+
+initCurrentAppState <- function(appobj) {
+  if (!is.null(.globals$appState)) {
+    stop("Can't initialize current app state when another is currently active.")
+  }
+  .globals$appState <- new.env(parent = emptyenv())
+  .globals$appState$app <- appobj
+  # Copy over global options
+  .globals$appState$options <- .globals$options
+}
+
+getCurrentAppState <- function() {
+  .globals$appState
+}
+
+clearCurrentAppState <- function() {
+  .globals$appState <- NULL
+}

R/app_template.R

@@ -0,0 +1,293 @@
+#' Generate a Shiny application from a template
+#'
+#' This function populates a directory with files for a Shiny application.
+#'
+#' In an interactive R session, this function will, by default, prompt the user
+#' to select which components to add to the application. Choices are
+#'
+#' ```
+#' 1: All
+#' 2: app.R              : Main application file
+#' 3: R/example.R        : Helper file with R code
+#' 4: R/example-module.R : Example module
+#' 5: tests/shinytest/   : Tests using the shinytest package
+#' 6: tests/testthat/    : Tests using the testthat package
+#' ```
+#'
+#' If option 1 is selected, the full example application including the
+#' following files and directories is created:
+#'
+#' ```
+#' appdir/
+#' |- app.R
+#' |- R
+#' |   |- example-module.R
+#' |   `- example.R
+#' `- tests
+#'     |- shinytest.R
+#'     |- shinytest
+#'     |   `- mytest.R
+#'     |- testthat.R
+#'     `- testthat
+#'         |- test-examplemodule.R
+#'         |- test-server.R
+#'         `- test-sort.R
+#' ```
+#'
+#' Some notes about these files:
+#' * `app.R` is the main application file.
+#' * All files in the `R/` subdirectory are automatically sourced when the
+#'   application is run.
+#' * `R/example.R` and `R/example-module.R` are automatically sourced when
+#'   the application is run. The first contains a function `lexical_sort()`,
+#'   and the second contains code for module created by the
+#'   [moduleServer()] function, which is used in the application.
+#' * `tests/` contains various tests for the application. You may
+#'   choose to use or remove any of them. They can be executed by the
+#'   [runTests()] function.
+#' * `tests/shinytest.R` is a test runner for test files in the
+#'   `tests/shinytest/` directory.
+#' * `tests/shinytest/mytest.R` is a test that uses the
+#'   [shinytest](https://rstudio.github.io/shinytest/) package to do
+#'   snapshot-based testing.
+#' * `tests/testthat.R` is a test runner for test files in the
+#'   `tests/testthat/` directory using the [testthat](https://testthat.r-lib.org/) package.
+#' * `tests/testthat/test-examplemodule.R` is a test for an application's module server function.
+#' * `tests/testthat/test-server.R` is a test for the application's server code
+#' * `tests/testthat/test-sort.R` is a test for a supporting function in the `R/` directory.
+#'
+#' @param path Path to create new shiny application template.
+#' @param examples Either one of "default", "ask", "all", or any combination of
+#'   "app", "rdir", "module", "shinytest", and "testthat". In an
+#'   interactive session, "default" falls back to "ask"; in a non-interactive
+#'   session, "default" falls back to "all". With "ask", this function will
+#'   prompt the user to select which template items will be added to the new app
+#'   directory. With "all", all template items will be added to the app
+#'   directory.
+#' @param dryrun If `TRUE`, don't actually write any files; just print out which
+#'   files would be written.
+#'
+#' @export
+shinyAppTemplate <- function(path = NULL, examples = "default", dryrun = FALSE)
+{
+  if (is.null(path)) {
+    stop("Please provide a `path`.")
+  }
+
+  # =======================================================
+  # Option handling
+  # =======================================================
+
+  choices <- c(
+    app       = "app.R              : Main application file",
+    rdir      = "R/example.R        : Helper file with R code",
+    module    = "R/example-module.R : Example module",
+    shinytest = "tests/shinytest/   : Tests using the shinytest package",
+    testthat  = "tests/testthat/    : Tests using the testthat package"
+  )
+
+  if (identical(examples, "default")) {
+    if (interactive()) {
+      examples <- "ask"
+    } else {
+      examples <- "all"
+    }
+  }
+
+  if (!identical(examples, "ask") &&
+      !identical(examples, "all") &&
+      any(! examples %in% names(choices)))
+  {
+    stop('`examples` must be one of "default", "ask", "all", or any combination of "',
+      paste(names(choices), collapse = '", "'), '".')
+  }
+
+  if (identical(examples, "ask")) {
+    response <- select_menu(
+      c(all = "All", choices),
+      title = paste0(
+        "Select which of the following to add at ", path, "/ :"
+      ),
+      msg = "Enter one or more numbers (with spaces), or an empty line to exit: \n"
+    )
+
+    examples <- names(response)
+  }
+
+  examples <- unique(examples)
+
+  if ("all" %in% examples) {
+    examples <- names(choices)
+  }
+
+  if (length(examples) == 0) {
+    return(invisible())
+  }
+
+  if ("shinytest" %in% examples) {
+    if (!is_available("shinytest", "1.4.0"))
+    {
+      message(
+        "The tests/shinytest directory needs shinytest 1.4.0 or later to work properly."
+      )
+      if (is_available("shinytest")) {
+        message("You currently have shinytest ",
+                utils::packageVersion("shinytest"), " installed.")
+      }
+
+    }
+  }
+
+  # =======================================================
+  # Utility functions
+  # =======================================================
+
+  # Check if a directory is empty, ignoring certain files
+  dir_is_empty <- function(path) {
+    files <- list.files(path, all.files = TRUE, no.. = TRUE)
+    # Ignore .DS_Store files, which are sometimes automatically created on macOS
+    files <- setdiff(files, ".DS_Store")
+    return(length(files) != 0)
+  }
+
+  # Helper to resolve paths relative to our template
+  template_path <- function(...) {
+    system.file("app_template", ..., package = "shiny")
+  }
+
+  # Resolve path relative to destination
+  dest_path <- function(...) {
+    file.path(path, ...)
+  }
+
+  mkdir <- function(path) {
+    if (!dirExists(path)) {
+      message("Creating ", ensure_trailing_slash(path))
+      if (!dryrun) {
+        dir.create(path, recursive = TRUE)
+      }
+    }
+  }
+
+  # Copy a file from the template directory to the destination directory. If the
+  # file has templating code (it contains `{{` in the text), then run it through
+  # the htmlTemplate().
+  copy_file_one <- function(name) {
+    from <- template_path(name)
+    to <- dest_path(name)
+
+    message("Creating ", to)
+    if (file.exists(to)) {
+      stop(to, " already exists. Please remove it and try again.", call. = FALSE)
+    }
+
+    if (!dryrun) {
+      is_template <- any(grepl("{{", readLines(from), fixed = TRUE))
+
+      if (is_template) {
+        writeChar(
+          as.character(htmlTemplate(
+            from,
+            rdir = "rdir" %in% examples,
+            module = "module" %in% examples
+          )),
+          con = to,
+          eos = NULL
+        )
+      } else {
+        file.copy(from, to)
+      }
+    }
+  }
+
+  # Copy multiple files from template to destination.
+  copy_file <- function(names) {
+    for (name in names) {
+      copy_file_one(name)
+    }
+  }
+
+  # Copy the files for a tests/ subdirectory
+  copy_test_dir <- function(name) {
+    files <- dir(template_path("tests"), recursive = TRUE)
+    # Note: This is not the same as using dir(pattern = "^shinytest"), since
+    # that will not match files inside of shinytest/.
+    files <- files[grepl(paste0("^", name), files)]
+
+    # Filter out files that are not module files in the R directory.
+    if (! "rdir" %in% examples) {
+      # find all files in the testthat folder that are not module or server files
+      is_r_folder_file <- (!grepl("module|server", basename(files))) & (dirname(files) == "testthat")
+      files <- files[!is_r_folder_file]
+    }
+
+    # Filter out module files, if applicable.
+    if (! "module" %in% examples) {
+      files <- files[!grepl("module", files)]
+    }
+
+    mkdir(dest_path("tests"))
+
+    # Create any subdirectories if needed
+    dirs <- setdiff(unique(dirname(files)), ".")
+    for (dir in dirs) {
+      mkdir(dest_path("tests", dir))
+    }
+
+    copy_file(file.path("tests", files))
+  }
+
+  # =======================================================
+  # Main function
+  # =======================================================
+
+  if (is.null(path)) {
+    stop("`path` is missing.")
+  }
+  if (file.exists(path) && !dirExists(path)) {
+    stop(path, " exists but is not a directory.")
+  }
+
+  if (dirExists(path) && dir_is_empty(path)) {
+    if (interactive()) {
+      response <- readline(paste0(
+        ensure_trailing_slash(path),
+        " is not empty. Do you want to use this directory anyway? [y/n] "
+      ))
+      if (tolower(response) != "y") {
+        return(invisible())
+      }
+    }
+  } else {
+    mkdir(path)
+  }
+
+  if ("app" %in% examples) {
+    copy_file("app.R")
+  }
+
+  # R/ dir with non-module files
+  if ("rdir" %in% examples) {
+    files <- dir(template_path("R"))
+    non_module_files <- files[!grepl("module.R$", files)]
+    mkdir(dest_path("R"))
+    copy_file(file.path("R", non_module_files))
+  }
+
+  # R/ dir with module files
+  if ("module" %in% examples) {
+    files <- dir(template_path("R"))
+    module_files <- files[grepl("module.R$", files)]
+    mkdir(dest_path("R"))
+    copy_file(file.path("R", module_files))
+  }
+
+  # tests/ dir
+  if ("shinytest" %in% examples) {
+    copy_test_dir("shinytest")
+  }
+  if ("testthat" %in% examples) {
+    copy_test_dir("testthat")
+  }
+  invisible()
+}

R/bookmark-state.R

@@ -217,6 +217,22 @@ RestoreContext <- R6Class("RestoreContext",
       self$dir <- NULL
     },
 
+    # Completely replace the state
+    set = function(active = FALSE, initErrorMessage = NULL, input = list(), values = list(), dir = NULL) {
+      # Validate all inputs
+      stopifnot(is.logical(active))
+      stopifnot(is.null(initErrorMessage) || is.character(initErrorMessage))
+      stopifnot(is.list(input))
+      stopifnot(is.list(values))
+      stopifnot(is.null(dir) || is.character(dir))
+
+      self$active <- active
+      self$initErrorMessage <- initErrorMessage
+      self$input <- RestoreInputSet$new(input)
+      self$values <- list2env2(values, parent = emptyenv())
+      self$dir <- dir
+    },
+
     # This should be called before a restore context is popped off the stack.
     flushPending = function() {
       self$input$flushPending()
@@ -453,7 +469,7 @@ hasCurrentRestoreContext <- function() {
   domain <- getDefaultReactiveDomain()
   if (!is.null(domain) && !is.null(domain$restoreContext))
     return(TRUE)
-  
+
   return(FALSE)
 }
 

R/bootstrap-layout.R

@@ -16,6 +16,7 @@
 #' @param theme Alternative Bootstrap stylesheet (normally a css file within the
 #'   www directory). For example, to use the theme located at
 #'   `www/bootstrap.css` you would use `theme = "bootstrap.css"`.
+#' @inheritParams bootstrapPage
 #'
 #' @return A UI defintion that can be passed to the [shinyUI] function.
 #'
@@ -87,11 +88,12 @@
 #' }
 #' @rdname fluidPage
 #' @export
-fluidPage <- function(..., title = NULL, responsive = NULL, theme = NULL) {
+fluidPage <- function(..., title = NULL, responsive = NULL, theme = NULL, lang = NULL) {
   bootstrapPage(div(class = "container-fluid", ...),
                 title = title,
                 responsive = responsive,
-                theme = theme)
+                theme = theme,
+                lang = lang)
 }
 
 
@@ -118,6 +120,7 @@ fluidRow <- function(...) {
 #' @param theme Alternative Bootstrap stylesheet (normally a css file within the
 #'   www directory). For example, to use the theme located at
 #'   `www/bootstrap.css` you would use `theme = "bootstrap.css"`.
+#' @inheritParams bootstrapPage
 #'
 #' @return A UI defintion that can be passed to the [shinyUI] function.
 #'
@@ -156,11 +159,12 @@ fluidRow <- function(...) {
 #'
 #' @rdname fixedPage
 #' @export
-fixedPage <- function(..., title = NULL, responsive = NULL, theme = NULL) {
+fixedPage <- function(..., title = NULL, responsive = NULL, theme = NULL, lang = NULL) {
   bootstrapPage(div(class = "container", ...),
                 title = title,
                 responsive = responsive,
-                theme = theme)
+                theme = theme,
+                lang = lang)
 }
 
 #' @rdname fixedPage
@@ -355,6 +359,8 @@ sidebarLayout <- function(sidebarPanel,
 sidebarPanel <- function(..., width = 4) {
   div(class=paste0("col-sm-", width),
     tags$form(class="well",
+      # A11y semantic landmark for sidebar
+      role="complementary",
       ...
     )
   )
@@ -364,6 +370,8 @@ sidebarPanel <- function(..., width = 4) {
 #' @rdname sidebarLayout
 mainPanel <- function(..., width = 8) {
   div(class=paste0("col-sm-", width),
+    # A11y semantic landmark for main region
+    role="main",
     ...
   )
 }

R/bootstrap.R

@@ -16,8 +16,15 @@ NULL
 #' @param title The browser window title (defaults to the host URL of the page)
 #' @param responsive This option is deprecated; it is no longer optional with
 #'   Bootstrap 3.
-#' @param theme Alternative Bootstrap stylesheet (normally a css file within the
-#'   www directory, e.g. `www/bootstrap.css`)
+#' @param theme One of the following:
+#'   * `NULL` (the default), which implies a "stock" build of Bootstrap 3.
+#'   * A [bootstraplib::bs_theme()] object. This can be used to replace a stock
+#'   build of Bootstrap 3 with a customized version of Bootstrap 3 or higher.
+#'   * A character string pointing to an alternative Bootstrap stylesheet
+#'   (normally a css file within the www directory, e.g. `www/bootstrap.css`).
+#' @param lang ISO 639-1 language code for the HTML page, such as "en" or "ko".
+#'   This will be used as the lang in the \code{<html>} tag, as in \code{<html lang="en">}.
+#'   The default (NULL) results in an empty string.
 #'
 #' @return A UI defintion that can be passed to the [shinyUI] function.
 #'
@@ -26,56 +33,196 @@ NULL
 #'
 #' @seealso [fluidPage()], [fixedPage()]
 #' @export
-bootstrapPage <- function(..., title = NULL, responsive = NULL, theme = NULL) {
+bootstrapPage <- function(..., title = NULL, responsive = NULL, theme = NULL, lang = NULL) {
 
   if (!is.null(responsive)) {
     shinyDeprecated("The 'responsive' argument is no longer used with Bootstrap 3.")
   }
 
-  attachDependencies(
-    tagList(
-      if (!is.null(title)) tags$head(tags$title(title)),
-      if (!is.null(theme)) {
-        tags$head(tags$link(rel="stylesheet", type="text/css", href = theme))
-      },
-
-      # remainder of tags passed to the function
-      list(...)
-    ),
-    bootstrapLib()
+  ui <- tagList(
+    bootstrapLib(theme),
+    if (!is.null(title)) tags$head(tags$title(title)),
+    # TODO: throw better error when length > 1?
+    if (is.character(theme)) {
+      tags$head(tags$link(rel="stylesheet", type="text/css", href = theme))
+    },
+    # remainder of tags passed to the function
+    list(...)
   )
+
+  ui <- setLang(ui, lang)
+
+  return(ui)
+}
+
+setLang <- function(ui, lang) {
+  # Add lang attribute to be passed to renderPage function
+  attr(ui, "lang") <- lang
+  ui
+}
+getLang <- function(ui) {
+  # Check if ui has lang attribute; otherwise, NULL
+  attr(ui, "lang", exact = TRUE)
 }
 
 #' Bootstrap libraries
 #'
-#' This function returns a set of web dependencies necessary for using Bootstrap
+#' This function defines a set of web dependencies necessary for using Bootstrap
 #' components in a web page.
 #'
-#' It isn't necessary to call this function if you use
-#' [bootstrapPage()] or others which use `bootstrapPage`, such
-#' [basicPage()], [fluidPage()], [fillPage()],
-#' [pageWithSidebar()], and [navbarPage()], because they
-#' already include the Bootstrap web dependencies.
+#' It isn't necessary to call this function if you use [bootstrapPage()] or
+#' others which use `bootstrapPage`, such [fluidPage()], [navbarPage()],
+#' [fillPage()], etc, because they already include the Bootstrap web dependencies.
 #'
 #' @inheritParams bootstrapPage
 #' @export
 bootstrapLib <- function(theme = NULL) {
-  htmlDependency("bootstrap", "3.4.1",
+  tagFunction(function() {
+    # If we're not compiling Bootstrap Sass (from bootstraplib), return the
+    # static Bootstrap build.
+    if (!is_bs_theme(theme)) {
+      # We'll enter here if `theme` is the path to a .css file, like that
+      # provided by `shinythemes::shinytheme("darkly")`.
+      return(bootstrapDependency(theme))
+    }
+
+    # Make bootstrap Sass available so other tagFunction()s (e.g.,
+    # sliderInput() et al) can resolve their HTML dependencies at render time
+    # using getCurrentTheme(). Note that we're making an implicit assumption
+    # that this tagFunction() executes *before* all other tagFunction()s; but
+    # that should be fine considering that, DOM tree order is preorder,
+    # depth-first traversal, and at least in the bootstrapPage(theme) case, we
+    # have control over the relative ordering.
+    # https://dom.spec.whatwg.org/#concept-tree
+    # https://stackoverflow.com/a/16113998/1583084
+    #
+    # Note also that since this is shinyOptions() (and not options()), the
+    # option is automatically reset when the app (or session) exits
+    if (isRunning()) {
+      setCurrentTheme(theme)
+      print("is running! and registering bs_theme_dependencies_css")
+      registerThemeDependency(bs_theme_dependencies_css)
+
+    } else {
+      # Technically, this a potential issue (someone trying to execute/render
+      # bootstrapLib outside of a Shiny app), but it seems that, in that case,
+      # you likely have other problems, since sliderInput() et al. already assume
+      # that Shiny is the one doing the rendering
+      #warning(
+      #  "It appears `shiny::bootstrapLib()` was rendered outside of an Shiny ",
+      #  "application context, likely by calling `as.tags()`, `as.character()`, ",
+      #  "or `print()` directly on `bootstrapLib()` or UI components that may ",
+      #  "depend on it (e.g., `fluidPage()`, etc). For 'themable' UI components ",
+      #  "(e.g., `sliderInput()`, `selectInput()`, `dateInput()`, etc) to style ",
+      #  "themselves based on the Bootstrap theme, make sure `bootstrapLib()` is ",
+      #  "provided directly to the UI and that the UI is provided direction to ",
+      #  "`shinyApp()` (or `runApp()`)", call. = FALSE
+      #)
+    }
+
+    bootstraplib::bs_theme_dependencies(theme)
+  })
+}
+
+# This is defined outside of bootstrapLib() because registerThemeDependency()
+# wants non-anonymous functions.
+bs_theme_dependencies_css <- function(theme) {
+  deps <- bootstraplib::bs_theme_dependencies(theme)
+  # Extract out the CSS files only (no need to re-send JS files, even though
+  # they wouldn't be re-rendered on the client anyway.)
+  Filter(deps, f = function(dep) !is.null(dep$stylesheet))
+}
+
+is_bs_theme <- function(x) {
+  is_available("bootstraplib", "0.2.0.9000") &&
+    bootstraplib::is_bs_theme(x)
+}
+
+#' Obtain Shiny's Bootstrap Sass theme
+#'
+#' Intended for use by Shiny developers to create Shiny bindings with intelligent
+#' styling based on the [bootstrapLib()]'s `theme` value.
+#'
+#' @return If called at render-time (i.e., inside a [htmltools::tagFunction()]),
+#' and [bootstrapLib()]'s `theme` has been set to a [bootstraplib::bs_theme()]
+#' object, then this returns the `theme`. Otherwise, this returns `NULL`.
+#' @seealso [getCurrentOutputInfo()], [bootstrapLib()], [htmltools::tagFunction()]
+#'
+#' @keywords internal
+#' @export
+getCurrentTheme <- function() {
+  getShinyOption("bootstrapTheme")
+}
+
+setCurrentTheme <- function(theme) {
+  shinyOptions(bootstrapTheme = theme)
+}
+
+#' Register a theme dependency
+#'
+#' This function registers a function that returns an [htmlDependency()] or list
+#' of such objects. If `session$setCurrentTheme()` is called, the function will
+#' be re-executed, and the resulting html dependency will be sent to the client.
+#'
+#' Note that `func` should **not** be an anonymous function, or a function which
+#' is defined within the calling function. This is so that,
+#' `registerThemeDependency()` is called multiple times with the function, it
+#' tries to deduplicate them
+#'
+#' @param func A function that takes one argument, `theme` (which is a
+#'   [sass::sass_layer()] object), and returns an htmlDependency object, or list
+#'   of them.
+#'
+#' @export
+#' @keywords internal
+registerThemeDependency <- function(func) {
+  func_expr <- substitute(func)
+  if (is.call(func_expr) && identical(func_expr[[1]], as.symbol("function"))) {
+    warning("`func` should not be an anonymous function. ",
+      "It should be declared outside of the function that calls registerThemeDependency(); ",
+      "otherwise it will not be deduplicated by Shiny and multiple copies of the ",
+      "resulting htmlDependency may be computed and sent to the client.")
+  }
+  if (!is.function(func) || length(formals(func)) != 1) {
+    stop("`func` must be a function with one argument (the current theme)")
+  }
+
+  # Note that this will automatically scope to the app or session level,
+  # depending on if this is called from within a session or not.
+  funcs <- getShinyOption("themeDependencyFuncs", list())
+str(funcs)
+  # Don't add func if it's already present.
+  have_func <- any(vapply(funcs, identical, logical(1), func))
+  if (!have_func) {
+    funcs[[length(funcs) + 1]] <- func
+  }
+str(funcs)
+
+  shinyOptions("themeDependencyFuncs" = funcs)
+}
+
+bootstrapDependency <- function(theme) {
+  htmlDependency(
+    "bootstrap", "3.4.1",
     c(
       href = "shared/bootstrap",
       file = system.file("www/shared/bootstrap", package = "shiny")
     ),
     script = c(
       "js/bootstrap.min.js",
-      # These shims are necessary for IE 8 compatibility
-      "shim/html5shiv.min.js",
-      "shim/respond.min.js"
+      # Safely adding accessibility plugin for screen readers and keyboard users; no break for sighted aspects (see https://github.com/paypal/bootstrap-accessibility-plugin)
+      "accessibility/js/bootstrap-accessibility.min.js"
+    ),
+    stylesheet = c(
+      theme %OR% "css/bootstrap.min.css",
+      # Safely adding accessibility plugin for screen readers and keyboard users; no break for sighted aspects (see https://github.com/paypal/bootstrap-accessibility-plugin)
+      "accessibility/css/bootstrap-accessibility.css"
     ),
-    stylesheet = if (is.null(theme)) "css/bootstrap.min.css",
     meta = list(viewport = "width=device-width, initial-scale=1")
   )
 }
 
+
 #' @rdname bootstrapPage
 #' @export
 basicPage <- function(...) {
@@ -129,6 +276,7 @@ basicPage <- function(...) {
 #'   shown in the document).
 #' @param bootstrap If `TRUE`, load the Bootstrap CSS library.
 #' @param theme URL to alternative Bootstrap stylesheet.
+#' @inheritParams bootstrapPage
 #'
 #' @family layout functions
 #'
@@ -156,7 +304,7 @@ basicPage <- function(...) {
 #' )
 #' @export
 fillPage <- function(..., padding = 0, title = NULL, bootstrap = TRUE,
-  theme = NULL) {
+  theme = NULL, lang = NULL) {
 
   fillCSS <- tags$head(tags$style(type = "text/css",
     "html, body { width: 100%; height: 100%; overflow: hidden; }",
@@ -164,14 +312,18 @@ fillPage <- function(..., padding = 0, title = NULL, bootstrap = TRUE,
   ))
 
   if (isTRUE(bootstrap)) {
-    bootstrapPage(title = title, theme = theme, fillCSS, ...)
+    ui <- bootstrapPage(title = title, theme = theme, fillCSS, lang = lang, ...)
   } else {
-    tagList(
+    ui <- tagList(
       fillCSS,
       if (!is.null(title)) tags$head(tags$title(title)),
       ...
     )
+
+    ui <- setLang(ui, lang)
   }
+
+  return(ui)
 }
 
 collapseSizes <- function(padding) {
@@ -223,6 +375,7 @@ collapseSizes <- function(padding) {
 #'   `www/bootstrap.css` you would use `theme = "bootstrap.css"`.
 #' @param windowTitle The title that should be displayed by the browser window.
 #'   Useful if `title` is not a string.
+#' @inheritParams bootstrapPage
 #' @param icon Optional icon to appear on a `navbarMenu` tab.
 #'
 #' @return A UI defintion that can be passed to the [shinyUI] function.
@@ -267,7 +420,8 @@ navbarPage <- function(title,
                        fluid = TRUE,
                        responsive = NULL,
                        theme = NULL,
-                       windowTitle = title) {
+                       windowTitle = title,
+                       lang = NULL) {
 
   if (!missing(collapsable)) {
     shinyDeprecated("`collapsable` is deprecated; use `collapsible` instead.")
@@ -338,6 +492,7 @@ navbarPage <- function(title,
     title = windowTitle,
     responsive = responsive,
     theme = theme,
+    lang = lang,
     tags$nav(class=navbarClass, role="navigation", containerDiv),
     contentDiv
   )
@@ -464,14 +619,12 @@ helpText <- function(...) {
 
 #' Create a tab panel
 #'
-#' Create a tab panel that can be included within a [tabsetPanel()] or
-#' a [navbarPage()].
 #'
 #' @param title Display title for tab
 #' @param ... UI elements to include within the tab
 #' @param value The value that should be sent when `tabsetPanel` reports
 #'   that this tab is selected. If omitted and `tabsetPanel` has an
-#'   `id`, then the title will be used..
+#'   `id`, then the title will be used.
 #' @param icon Optional icon to appear on the tab. This attribute is only
 #' valid when using a `tabPanel` within a [navbarPage()].
 #' @return A tab that can be passed to [tabsetPanel()]
@@ -489,12 +642,29 @@ helpText <- function(...) {
 #'   )
 #' )
 #' @export
+#' @describeIn tabPanel Create a tab panel that can be included within a [tabsetPanel()] or a [navbarPage()].
 tabPanel <- function(title, ..., value = title, icon = NULL) {
-  divTag <- div(class="tab-pane",
-                title=title,
-                `data-value`=value,
-                `data-icon-class` = iconClass(icon),
-                ...)
+  div(
+    class = "tab-pane",
+    title = title,
+    `data-value` = value,
+    `data-icon-class` = iconClass(icon),
+    ...
+  )
+}
+#' @export
+#' @describeIn tabPanel Create a tab panel that drops the title argument.
+#'   This function should be used within `tabsetPanel(type = "hidden")`. See [tabsetPanel()] for example usage.
+tabPanelBody <- function(value, ..., icon = NULL) {
+  if (
+    !is.character(value) ||
+    length(value) != 1 ||
+    any(is.na(value)) ||
+    nchar(value) == 0
+  ) {
+    stop("`value` must be a single, non-empty string value")
+  }
+  tabPanel(title = NULL, ..., value = value, icon = icon)
 }
 
 #' Create a tabset panel
@@ -510,8 +680,13 @@ tabPanel <- function(title, ..., value = title, icon = NULL) {
 #' @param selected The `value` (or, if none was supplied, the `title`)
 #'   of the tab that should be selected by default. If `NULL`, the first
 #'   tab will be selected.
-#' @param type Use "tabs" for the standard look; Use "pills" for a more plain
-#'   look where tabs are selected using a background fill color.
+#' @param type  \describe{
+#'   \item{`"tabs"`}{Standard tab look}
+#'   \item{`"pills"`}{Selected tabs use the background fill color}
+#'   \item{`"hidden"`}{Hides the selectable tabs. Use `type = "hidden"` in
+#'   conjunction with [tabPanelBody()] and [updateTabsetPanel()] to control the
+#'   active tab via other input controls. (See example below)}
+#' }
 #' @param position This argument is deprecated; it has been discontinued in
 #'   Bootstrap 3.
 #' @return A tabset that can be passed to [mainPanel()]
@@ -529,11 +704,40 @@ tabPanel <- function(title, ..., value = title, icon = NULL) {
 #'     tabPanel("Table", tableOutput("table"))
 #'   )
 #' )
+#'
+#' ui <- fluidPage(
+#'   sidebarLayout(
+#'     sidebarPanel(
+#'       radioButtons("controller", "Controller", 1:3, 1)
+#'     ),
+#'     mainPanel(
+#'       tabsetPanel(
+#'         id = "hidden_tabs",
+#'         # Hide the tab values.
+#'         # Can only switch tabs by using `updateTabsetPanel()`
+#'         type = "hidden",
+#'         tabPanelBody("panel1", "Panel 1 content"),
+#'         tabPanelBody("panel2", "Panel 2 content"),
+#'         tabPanelBody("panel3", "Panel 3 content")
+#'       )
+#'     )
+#'   )
+#' )
+#'
+#' server <- function(input, output, session) {
+#'   observeEvent(input$controller, {
+#'     updateTabsetPanel(session, "hidden_tabs", selected = paste0("panel", input$controller))
+#'   })
+#' }
+#'
+#' if (interactive()) {
+#'   shinyApp(ui, server)
+#' }
 #' @export
 tabsetPanel <- function(...,
                         id = NULL,
                         selected = NULL,
-                        type = c("tabs", "pills"),
+                        type = c("tabs", "pills", "hidden"),
                         position = NULL) {
   if (!is.null(position)) {
     shinyDeprecated(msg = paste("tabsetPanel: argument 'position' is deprecated;",
@@ -842,42 +1046,9 @@ verbatimTextOutput <- function(outputId, placeholder = FALSE) {
 #' @rdname plotOutput
 #' @export
 imageOutput <- function(outputId, width = "100%", height="400px",
-                        click = NULL, dblclick = NULL,
-                        hover = NULL, hoverDelay = NULL, hoverDelayType = NULL,
-                        brush = NULL,
-                        clickId = NULL, hoverId = NULL,
+                        click = NULL, dblclick = NULL, hover = NULL, brush = NULL,
                         inline = FALSE) {
 
-  if (!is.null(clickId)) {
-    shinyDeprecated(
-      msg = paste("The 'clickId' argument is deprecated. ",
-                  "Please use 'click' instead. ",
-                  "See ?imageOutput or ?plotOutput for more information."),
-      version = "0.11.1"
-    )
-    click <- clickId
-  }
-
-  if (!is.null(hoverId)) {
-    shinyDeprecated(
-      msg = paste("The 'hoverId' argument is deprecated. ",
-                  "Please use 'hover' instead. ",
-                  "See ?imageOutput or ?plotOutput for more information."),
-      version = "0.11.1"
-    )
-    hover <- hoverId
-  }
-
-  if (!is.null(hoverDelay) || !is.null(hoverDelayType)) {
-    shinyDeprecated(
-      msg = paste("The 'hoverDelay'and 'hoverDelayType' arguments are deprecated. ",
-                  "Please use 'hoverOpts' instead. ",
-                  "See ?imageOutput or ?plotOutput for more information."),
-      version = "0.11.1"
-    )
-    hover <- hoverOpts(id = hover, delay = hoverDelay, delayType = hoverDelayType)
-  }
-
   style <- if (!inline) {
     paste("width:", validateCssUnit(width), ";", "height:", validateCssUnit(height))
   }
@@ -984,14 +1155,6 @@ imageOutput <- function(outputId, width = "100%", height="400px",
 #'   named list with `x` and `y` elements indicating the mouse
 #'   position. To control the hover time or hover delay type, you must use
 #'   [hoverOpts()].
-#' @param clickId Deprecated; use `click` instead. Also see the
-#'   [clickOpts()] function.
-#' @param hoverId Deprecated; use `hover` instead. Also see the
-#'   [hoverOpts()] function.
-#' @param hoverDelay Deprecated; use `hover` instead. Also see the
-#'   [hoverOpts()] function.
-#' @param hoverDelayType Deprecated; use `hover` instead. Also see the
-#'   [hoverOpts()] function.
 #' @param brush Similar to the `click` argument, this can be `NULL`
 #'   (the default), a string, or an object created by the
 #'   [brushOpts()] function. If you use a value like
@@ -1175,16 +1338,12 @@ imageOutput <- function(outputId, width = "100%", height="400px",
 #' }
 #' @export
 plotOutput <- function(outputId, width = "100%", height="400px",
-                       click = NULL, dblclick = NULL,
-                       hover = NULL, hoverDelay = NULL, hoverDelayType = NULL,
-                       brush = NULL,
-                       clickId = NULL, hoverId = NULL,
+                       click = NULL, dblclick = NULL, hover = NULL, brush = NULL,
                        inline = FALSE) {
 
   # Result is the same as imageOutput, except for HTML class
   res <- imageOutput(outputId, width, height, click, dblclick,
-                     hover, hoverDelay, hoverDelayType, brush,
-                     clickId, hoverId, inline)
+                     hover, brush, inline)
 
   res$attribs$class <- "shiny-plot-output"
   res
@@ -1305,22 +1464,30 @@ uiOutput <- htmlOutput
 #'   is assigned to.
 #' @param label The label that should appear on the button.
 #' @param class Additional CSS classes to apply to the tag, if any.
+#' @param icon An [icon()] to appear on the button. Default is `icon("download")`.
 #' @param ... Other arguments to pass to the container tag function.
 #'
 #' @examples
 #' \dontrun{
-#' # In server.R:
-#' output$downloadData <- downloadHandler(
-#'   filename = function() {
-#'     paste('data-', Sys.Date(), '.csv', sep='')
-#'   },
-#'   content = function(con) {
-#'     write.csv(data, con)
-#'   }
+#' ui <- fluidPage(
+#'   downloadButton("downloadData", "Download")
 #' )
 #'
-#' # In ui.R:
-#' downloadLink('downloadData', 'Download')
+#' server <- function(input, output) {
+#'   # Our dataset
+#'   data <- mtcars
+#'
+#'   output$downloadData <- downloadHandler(
+#'     filename = function() {
+#'       paste("data-", Sys.Date(), ".csv", sep="")
+#'     },
+#'     content = function(file) {
+#'       write.csv(data, file)
+#'     }
+#'   )
+#' }
+#'
+#' shinyApp(ui, server)
 #' }
 #'
 #' @aliases downloadLink
@@ -1328,13 +1495,15 @@ uiOutput <- htmlOutput
 #' @export
 downloadButton <- function(outputId,
                            label="Download",
-                           class=NULL, ...) {
+                           class=NULL,
+                           ...,
+                           icon = shiny::icon("download")) {
   aTag <- tags$a(id=outputId,
                  class=paste('btn btn-default shiny-download-link', class),
                  href='',
                  target='_blank',
                  download=NA,
-                 icon("download"),
+                 validateIcon(icon),
                  label, ...)
 }
 
@@ -1358,7 +1527,7 @@ downloadLink <- function(outputId, label="Download", class=NULL, ...) {
 #'
 #' @param name Name of icon. Icons are drawn from the
 #'   [Font Awesome Free](https://fontawesome.com/) (currently icons from
-#'   the v5.3.1 set are supported with the v4 naming convention) and
+#'   the v5.13.0 set are supported with the v4 naming convention) and
 #'   [Glyphicons](http://getbootstrap.com/components/#glyphicons)
 #'   libraries. Note that the "fa-" and "glyphicon-" prefixes should not be used
 #'   in icon names (i.e. the "fa-calendar" icon should be referred to as
@@ -1411,12 +1580,12 @@ icon <- function(name, class = NULL, lib = "font-awesome") {
   if (!is.null(class))
     iconClass <- paste(iconClass, class)
 
-  iconTag <- tags$i(class = iconClass)
+  iconTag <- tags$i(class = iconClass, role = "presentation", `aria-label` = paste(name, "icon"))
 
   # font-awesome needs an additional dependency (glyphicon is in bootstrap)
   if (lib == "font-awesome") {
     htmlDependencies(iconTag) <- htmlDependency(
-      "font-awesome", "5.3.1", "www/shared/fontawesome", package = "shiny",
+      "font-awesome", "5.13.0", "www/shared/fontawesome", package = "shiny",
       stylesheet = c(
         "css/all.min.css",
         "css/v4-shims.min.css"

R/cache-context.R

@@ -1,77 +0,0 @@
-# A context object for tracking a cache that needs to be dirtied when a set of
-# files changes on disk. Each time the cache is dirtied, the set of files is
-# cleared. Therefore, the set of files needs to be re-built each time the cached
-# code executes. This approach allows for dynamic dependency graphs.
-CacheContext <- R6Class(
-  'CacheContext',
-  portable = FALSE,
-  class = FALSE,
-  public = list(
-    .dirty = TRUE,
-    # List of functions that return TRUE if dirty
-    .tests = list(),
-
-    addDependencyFile = function(file) {
-      if (.dirty)
-        return()
-
-      file <- normalizePath(file)
-
-      mtime <- file.info(file)$mtime
-      .tests <<- c(.tests, function() {
-        newMtime <- try(file.info(file)$mtime, silent=TRUE)
-        if (inherits(newMtime, 'try-error'))
-          return(TRUE)
-        return(!identical(mtime, newMtime))
-      })
-      invisible()
-    },
-    forceDirty = function() {
-      .dirty <<- TRUE
-      .tests <<- list()
-      invisible()
-    },
-    isDirty = function() {
-      if (.dirty)
-        return(TRUE)
-
-      for (test in .tests) {
-        if (test()) {
-          forceDirty()
-          return(TRUE)
-        }
-      }
-
-      return(FALSE)
-    },
-    reset = function() {
-      .dirty <<- FALSE
-      .tests <<- list()
-    },
-    with = function(func) {
-      oldCC <- .currentCacheContext$cc
-      .currentCacheContext$cc <- self
-      on.exit(.currentCacheContext$cc <- oldCC)
-
-      return(func())
-    }
-  )
-)
-
-.currentCacheContext <- new.env()
-
-# Indicates to Shiny that the given file path is part of the dependency graph
-# for whatever is currently executing (so far, only ui.R). By default, ui.R only
-# gets re-executed when it is detected to have changed; this function allows the
-# caller to indicate that it should also re-execute if the given file changes.
-#
-# If NULL or NA is given as the argument, then ui.R will re-execute next time.
-dependsOnFile <- function(filepath) {
-  if (is.null(.currentCacheContext$cc))
-    return()
-
-  if (is.null(filepath) || is.na(filepath))
-    .currentCacheContext$cc$forceDirty()
-  else
-    .currentCacheContext$cc$addDependencyFile(filepath)
-}

R/cache-disk.R

@@ -130,8 +130,8 @@
 #' if an object is in the cache, and then call `get(key)`, the object may
 #' be removed from the cache in between those two calls, and `get(key)`
 #' will throw an error. Instead of calling the two functions, it is better to
-#' simply call `get(key)`, and use `tryCatch()` to handle the error
-#' that is thrown if the object is not in the cache. This effectively tests for
+#' simply call `get(key)`, and check that the returned object is not a
+#' `key_missing()` object, using `is.key_missing()`. This effectively tests for
 #' existence and gets the object in one operation.
 #'
 #' It is also possible for one processes to prune objects at the same time that
@@ -387,7 +387,7 @@ DiskCache <- R6Class("DiskCache",
       # is because it is expensive to find the size of the serialized object
       # before adding it.
 
-      private$log(paste0('prune'))
+      private$log('prune')
       self$is_destroyed(throw = TRUE)
 
       current_time <- Sys.time()
@@ -407,7 +407,11 @@ DiskCache <- R6Class("DiskCache",
         rm_idx <- timediff > private$max_age
         if (any(rm_idx)) {
           private$log(paste0("prune max_age: Removing ", paste(info$name[rm_idx], collapse = ", ")))
-          file.remove(info$name[rm_idx])
+          rm_success <- file.remove(info$name[rm_idx])
+          # This maps rm_success back into the TRUEs in the rm_idx vector.
+          # If (for example) rm_idx is c(F,T,F,T,T) and rm_success is c(T,F,T),
+          # then this line modifies rm_idx to be c(F,T,F,F,T).
+          rm_idx[rm_idx] <- rm_success
           info <- info[!rm_idx, ]
         }
       }
@@ -428,7 +432,8 @@ DiskCache <- R6Class("DiskCache",
         rm_idx <- seq_len(nrow(info)) > private$max_n
         private$log(paste0("prune max_n: Removing ", paste(info$name[rm_idx], collapse = ", ")))
         rm_success <- file.remove(info$name[rm_idx])
-        info <- info[!rm_success, ]
+        rm_idx[rm_idx] <- rm_success
+        info <- info[!rm_idx, ]
       }
 
       # 3. Remove files if cache is too large.
@@ -438,7 +443,8 @@ DiskCache <- R6Class("DiskCache",
         rm_idx <- cum_size > private$max_size
         private$log(paste0("prune max_size: Removing ", paste(info$name[rm_idx], collapse = ", ")))
         rm_success <- file.remove(info$name[rm_idx])
-        info <- info[!rm_success, ]
+        rm_idx[rm_idx] <- rm_success
+        info <- info[!rm_idx, ]
       }
 
       private$prune_last_time <- as.numeric(current_time)
@@ -555,7 +561,7 @@ DiskCache <- R6Class("DiskCache",
       if (is.null(private$logfile)) return()
 
       text <- paste0(format(Sys.time(), "[%Y-%m-%d %H:%M:%OS3] DiskCache "), text)
-      writeLines(text, private$logfile)
+      cat(text, sep = "\n", file = private$logfile, append = TRUE)
     }
   )
 )

R/cache-memory.R

@@ -359,7 +359,7 @@ MemoryCache <- R6Class("MemoryCache",
       if (is.null(private$logfile)) return()
 
       text <- paste0(format(Sys.time(), "[%Y-%m-%d %H:%M:%OS3] MemoryCache "), text)
-      writeLines(text, private$logfile)
+      cat(text, sep = "\n", file = private$logfile, append = TRUE)
     }
   )
 )

R/cache-utils.R

@@ -1,11 +1,3 @@
-#' @importFrom fastmap key_missing
-#' @export
-fastmap::key_missing
-
-#' @importFrom fastmap is.key_missing
-#' @export
-fastmap::is.key_missing
-
 
 validate_key <- function(key) {
   if (!is.character(key) || length(key) != 1 || nchar(key) == 0) {
@@ -15,4 +7,3 @@ validate_key <- function(key) {
     stop("Invalid key: ", key, ". Only lowercase letters and numbers are allowed.")
   }
 }
-

R/font-awesome.R

@@ -1,75 +1,445 @@
 font_awesome_brands <- c(
-  "500px", "accessible-icon", "accusoft", "adn", "adversal",
-  "affiliatetheme", "algolia", "alipay", "amazon", "amazon-pay",
-  "amilia", "android", "angellist", "angrycreative", "angular",
-  "app-store", "app-store-ios", "apper", "apple", "apple-pay",
-  "asymmetrik", "audible", "autoprefixer", "avianex", "aviato",
-  "aws", "bandcamp", "behance", "behance-square", "bimobject",
-  "bitbucket", "bitcoin", "bity", "black-tie", "blackberry", "blogger",
-  "blogger-b", "bluetooth", "bluetooth-b", "btc", "buromobelexperte",
-  "buysellads", "cc-amazon-pay", "cc-amex", "cc-apple-pay", "cc-diners-club",
-  "cc-discover", "cc-jcb", "cc-mastercard", "cc-paypal", "cc-stripe",
-  "cc-visa", "centercode", "chrome", "cloudscale", "cloudsmith",
-  "cloudversify", "codepen", "codiepie", "connectdevelop", "contao",
-  "cpanel", "creative-commons", "creative-commons-by", "creative-commons-nc",
-  "creative-commons-nc-eu", "creative-commons-nc-jp", "creative-commons-nd",
-  "creative-commons-pd", "creative-commons-pd-alt", "creative-commons-remix",
-  "creative-commons-sa", "creative-commons-sampling", "creative-commons-sampling-plus",
-  "creative-commons-share", "css3", "css3-alt", "cuttlefish", "d-and-d",
-  "dashcube", "delicious", "deploydog", "deskpro", "deviantart",
-  "digg", "digital-ocean", "discord", "discourse", "dochub", "docker",
-  "draft2digital", "dribbble", "dribbble-square", "dropbox", "drupal",
-  "dyalog", "earlybirds", "ebay", "edge", "elementor", "ello",
-  "ember", "empire", "envira", "erlang", "ethereum", "etsy", "expeditedssl",
-  "facebook", "facebook-f", "facebook-messenger", "facebook-square",
-  "firefox", "first-order", "first-order-alt", "firstdraft", "flickr",
-  "flipboard", "fly", "font-awesome", "font-awesome-alt", "font-awesome-flag",
-  "font-awesome-logo-full", "fonticons", "fonticons-fi", "fort-awesome",
-  "fort-awesome-alt", "forumbee", "foursquare", "free-code-camp",
-  "freebsd", "fulcrum", "galactic-republic", "galactic-senate",
-  "get-pocket", "gg", "gg-circle", "git", "git-square", "github",
-  "github-alt", "github-square", "gitkraken", "gitlab", "gitter",
-  "glide", "glide-g", "gofore", "goodreads", "goodreads-g", "google",
-  "google-drive", "google-play", "google-plus", "google-plus-g",
-  "google-plus-square", "google-wallet", "gratipay", "grav", "gripfire",
-  "grunt", "gulp", "hacker-news", "hacker-news-square", "hackerrank",
-  "hips", "hire-a-helper", "hooli", "hornbill", "hotjar", "houzz",
-  "html5", "hubspot", "imdb", "instagram", "internet-explorer",
-  "ioxhost", "itunes", "itunes-note", "java", "jedi-order", "jenkins",
-  "joget", "joomla", "js", "js-square", "jsfiddle", "kaggle", "keybase",
-  "keycdn", "kickstarter", "kickstarter-k", "korvue", "laravel",
-  "lastfm", "lastfm-square", "leanpub", "less", "line", "linkedin",
-  "linkedin-in", "linode", "linux", "lyft", "magento", "mailchimp",
-  "mandalorian", "markdown", "mastodon", "maxcdn", "medapps", "medium",
-  "medium-m", "medrt", "meetup", "megaport", "microsoft", "mix",
-  "mixcloud", "mizuni", "modx", "monero", "napster", "neos", "nimblr",
-  "nintendo-switch", "node", "node-js", "npm", "ns8", "nutritionix",
-  "odnoklassniki", "odnoklassniki-square", "old-republic", "opencart",
-  "openid", "opera", "optin-monster", "osi", "page4", "pagelines",
-  "palfed", "patreon", "paypal", "periscope", "phabricator", "phoenix-framework",
-  "phoenix-squadron", "php", "pied-piper", "pied-piper-alt", "pied-piper-hat",
-  "pied-piper-pp", "pinterest", "pinterest-p", "pinterest-square",
-  "playstation", "product-hunt", "pushed", "python", "qq", "quinscape",
-  "quora", "r-project", "ravelry", "react", "readme", "rebel",
-  "red-river", "reddit", "reddit-alien", "reddit-square", "rendact",
-  "renren", "replyd", "researchgate", "resolving", "rev", "rocketchat",
-  "rockrms", "safari", "sass", "schlix", "scribd", "searchengin",
-  "sellcast", "sellsy", "servicestack", "shirtsinbulk", "shopware",
-  "simplybuilt", "sistrix", "sith", "skyatlas", "skype", "slack",
-  "slack-hash", "slideshare", "snapchat", "snapchat-ghost", "snapchat-square",
-  "soundcloud", "speakap", "spotify", "squarespace", "stack-exchange",
-  "stack-overflow", "staylinked", "steam", "steam-square", "steam-symbol",
-  "sticker-mule", "strava", "stripe", "stripe-s", "studiovinari",
-  "stumbleupon", "stumbleupon-circle", "superpowers", "supple",
-  "teamspeak", "telegram", "telegram-plane", "tencent-weibo", "the-red-yeti",
-  "themeco", "themeisle", "trade-federation", "trello", "tripadvisor",
-  "tumblr", "tumblr-square", "twitch", "twitter", "twitter-square",
-  "typo3", "uber", "uikit", "uniregistry", "untappd", "usb", "ussunnah",
-  "vaadin", "viacoin", "viadeo", "viadeo-square", "viber", "vimeo",
-  "vimeo-square", "vimeo-v", "vine", "vk", "vnv", "vuejs", "weebly",
-  "weibo", "weixin", "whatsapp", "whatsapp-square", "whmcs", "wikipedia-w",
-  "windows", "wix", "wolf-pack-battalion", "wordpress", "wordpress-simple",
-  "wpbeginner", "wpexplorer", "wpforms", "xbox", "xing", "xing-square",
-  "y-combinator", "yahoo", "yandex", "yandex-international", "yelp",
-  "yoast", "youtube", "youtube-square", "zhihu"
-)
+  "500px",
+  "accessible-icon",
+  "accusoft",
+  "acquisitions-incorporated",
+  "adn",
+  "adobe",
+  "adversal",
+  "affiliatetheme",
+  "airbnb",
+  "algolia",
+  "alipay",
+  "amazon",
+  "amazon-pay",
+  "amilia",
+  "android",
+  "angellist",
+  "angrycreative",
+  "angular",
+  "app-store",
+  "app-store-ios",
+  "apper",
+  "apple",
+  "apple-pay",
+  "artstation",
+  "asymmetrik",
+  "atlassian",
+  "audible",
+  "autoprefixer",
+  "avianex",
+  "aviato",
+  "aws",
+  "bandcamp",
+  "battle-net",
+  "behance",
+  "behance-square",
+  "bimobject",
+  "bitbucket",
+  "bitcoin",
+  "bity",
+  "black-tie",
+  "blackberry",
+  "blogger",
+  "blogger-b",
+  "bluetooth",
+  "bluetooth-b",
+  "bootstrap",
+  "btc",
+  "buffer",
+  "buromobelexperte",
+  "buy-n-large",
+  "buysellads",
+  "canadian-maple-leaf",
+  "cc-amazon-pay",
+  "cc-amex",
+  "cc-apple-pay",
+  "cc-diners-club",
+  "cc-discover",
+  "cc-jcb",
+  "cc-mastercard",
+  "cc-paypal",
+  "cc-stripe",
+  "cc-visa",
+  "centercode",
+  "centos",
+  "chrome",
+  "chromecast",
+  "cloudscale",
+  "cloudsmith",
+  "cloudversify",
+  "codepen",
+  "codiepie",
+  "confluence",
+  "connectdevelop",
+  "contao",
+  "cotton-bureau",
+  "cpanel",
+  "creative-commons",
+  "creative-commons-by",
+  "creative-commons-nc",
+  "creative-commons-nc-eu",
+  "creative-commons-nc-jp",
+  "creative-commons-nd",
+  "creative-commons-pd",
+  "creative-commons-pd-alt",
+  "creative-commons-remix",
+  "creative-commons-sa",
+  "creative-commons-sampling",
+  "creative-commons-sampling-plus",
+  "creative-commons-share",
+  "creative-commons-zero",
+  "critical-role",
+  "css3",
+  "css3-alt",
+  "cuttlefish",
+  "d-and-d",
+  "d-and-d-beyond",
+  "dailymotion",
+  "dashcube",
+  "delicious",
+  "deploydog",
+  "deskpro",
+  "dev",
+  "deviantart",
+  "dhl",
+  "diaspora",
+  "digg",
+  "digital-ocean",
+  "discord",
+  "discourse",
+  "dochub",
+  "docker",
+  "draft2digital",
+  "dribbble",
+  "dribbble-square",
+  "dropbox",
+  "drupal",
+  "dyalog",
+  "earlybirds",
+  "ebay",
+  "edge",
+  "elementor",
+  "ello",
+  "ember",
+  "empire",
+  "envira",
+  "erlang",
+  "ethereum",
+  "etsy",
+  "evernote",
+  "expeditedssl",
+  "facebook",
+  "facebook-f",
+  "facebook-messenger",
+  "facebook-square",
+  "fantasy-flight-games",
+  "fedex",
+  "fedora",
+  "figma",
+  "firefox",
+  "firefox-browser",
+  "first-order",
+  "first-order-alt",
+  "firstdraft",
+  "flickr",
+  "flipboard",
+  "fly",
+  "font-awesome",
+  "font-awesome-alt",
+  "font-awesome-flag",
+  "font-awesome-logo-full",
+  "fonticons",
+  "fonticons-fi",
+  "fort-awesome",
+  "fort-awesome-alt",
+  "forumbee",
+  "foursquare",
+  "free-code-camp",
+  "freebsd",
+  "fulcrum",
+  "galactic-republic",
+  "galactic-senate",
+  "get-pocket",
+  "gg",
+  "gg-circle",
+  "git",
+  "git-alt",
+  "git-square",
+  "github",
+  "github-alt",
+  "github-square",
+  "gitkraken",
+  "gitlab",
+  "gitter",
+  "glide",
+  "glide-g",
+  "gofore",
+  "goodreads",
+  "goodreads-g",
+  "google",
+  "google-drive",
+  "google-play",
+  "google-plus",
+  "google-plus-g",
+  "google-plus-square",
+  "google-wallet",
+  "gratipay",
+  "grav",
+  "gripfire",
+  "grunt",
+  "gulp",
+  "hacker-news",
+  "hacker-news-square",
+  "hackerrank",
+  "hips",
+  "hire-a-helper",
+  "hooli",
+  "hornbill",
+  "hotjar",
+  "houzz",
+  "html5",
+  "hubspot",
+  "ideal",
+  "imdb",
+  "instagram",
+  "instagram-square",
+  "intercom",
+  "internet-explorer",
+  "invision",
+  "ioxhost",
+  "itch-io",
+  "itunes",
+  "itunes-note",
+  "java",
+  "jedi-order",
+  "jenkins",
+  "jira",
+  "joget",
+  "joomla",
+  "js",
+  "js-square",
+  "jsfiddle",
+  "kaggle",
+  "keybase",
+  "keycdn",
+  "kickstarter",
+  "kickstarter-k",
+  "korvue",
+  "laravel",
+  "lastfm",
+  "lastfm-square",
+  "leanpub",
+  "less",
+  "line",
+  "linkedin",
+  "linkedin-in",
+  "linode",
+  "linux",
+  "lyft",
+  "magento",
+  "mailchimp",
+  "mandalorian",
+  "markdown",
+  "mastodon",
+  "maxcdn",
+  "mdb",
+  "medapps",
+  "medium",
+  "medium-m",
+  "medrt",
+  "meetup",
+  "megaport",
+  "mendeley",
+  "microblog",
+  "microsoft",
+  "mix",
+  "mixcloud",
+  "mixer",
+  "mizuni",
+  "modx",
+  "monero",
+  "napster",
+  "neos",
+  "nimblr",
+  "node",
+  "node-js",
+  "npm",
+  "ns8",
+  "nutritionix",
+  "odnoklassniki",
+  "odnoklassniki-square",
+  "old-republic",
+  "opencart",
+  "openid",
+  "opera",
+  "optin-monster",
+  "orcid",
+  "osi",
+  "page4",
+  "pagelines",
+  "palfed",
+  "patreon",
+  "paypal",
+  "penny-arcade",
+  "periscope",
+  "phabricator",
+  "phoenix-framework",
+  "phoenix-squadron",
+  "php",
+  "pied-piper",
+  "pied-piper-alt",
+  "pied-piper-hat",
+  "pied-piper-pp",
+  "pied-piper-square",
+  "pinterest",
+  "pinterest-p",
+  "pinterest-square",
+  "playstation",
+  "product-hunt",
+  "pushed",
+  "python",
+  "qq",
+  "quinscape",
+  "quora",
+  "r-project",
+  "raspberry-pi",
+  "ravelry",
+  "react",
+  "reacteurope",
+  "readme",
+  "rebel",
+  "red-river",
+  "reddit",
+  "reddit-alien",
+  "reddit-square",
+  "redhat",
+  "renren",
+  "replyd",
+  "researchgate",
+  "resolving",
+  "rev",
+  "rocketchat",
+  "rockrms",
+  "safari",
+  "salesforce",
+  "sass",
+  "schlix",
+  "scribd",
+  "searchengin",
+  "sellcast",
+  "sellsy",
+  "servicestack",
+  "shirtsinbulk",
+  "shopify",
+  "shopware",
+  "simplybuilt",
+  "sistrix",
+  "sith",
+  "sketch",
+  "skyatlas",
+  "skype",
+  "slack",
+  "slack-hash",
+  "slideshare",
+  "snapchat",
+  "snapchat-ghost",
+  "snapchat-square",
+  "soundcloud",
+  "sourcetree",
+  "speakap",
+  "speaker-deck",
+  "spotify",
+  "squarespace",
+  "stack-exchange",
+  "stack-overflow",
+  "stackpath",
+  "staylinked",
+  "steam",
+  "steam-square",
+  "steam-symbol",
+  "sticker-mule",
+  "strava",
+  "stripe",
+  "stripe-s",
+  "studiovinari",
+  "stumbleupon",
+  "stumbleupon-circle",
+  "superpowers",
+  "supple",
+  "suse",
+  "swift",
+  "symfony",
+  "teamspeak",
+  "telegram",
+  "telegram-plane",
+  "tencent-weibo",
+  "the-red-yeti",
+  "themeco",
+  "themeisle",
+  "think-peaks",
+  "trade-federation",
+  "trello",
+  "tripadvisor",
+  "tumblr",
+  "tumblr-square",
+  "twitch",
+  "twitter",
+  "twitter-square",
+  "typo3",
+  "uber",
+  "ubuntu",
+  "uikit",
+  "umbraco",
+  "uniregistry",
+  "unity",
+  "untappd",
+  "ups",
+  "usb",
+  "usps",
+  "ussunnah",
+  "vaadin",
+  "viacoin",
+  "viadeo",
+  "viadeo-square",
+  "viber",
+  "vimeo",
+  "vimeo-square",
+  "vimeo-v",
+  "vine",
+  "vk",
+  "vnv",
+  "vuejs",
+  "waze",
+  "weebly",
+  "weibo",
+  "weixin",
+  "whatsapp",
+  "whatsapp-square",
+  "whmcs",
+  "wikipedia-w",
+  "windows",
+  "wix",
+  "wizards-of-the-coast",
+  "wolf-pack-battalion",
+  "wordpress",
+  "wordpress-simple",
+  "wpbeginner",
+  "wpexplorer",
+  "wpforms",
+  "wpressr",
+  "xbox",
+  "xing",
+  "xing-square",
+  "y-combinator",
+  "yahoo",
+  "yammer",
+  "yandex",
+  "yandex-international",
+  "yarn",
+  "yelp",
+  "yoast",
+  "youtube",
+  "youtube-square",
+  "zhihu"
+)

R/globals.R

@@ -28,14 +28,6 @@ register_s3_method <- function(pkg, generic, class, fun = NULL) {
 }
 
 register_upgrade_message <- function(pkg, version) {
-  # Is an out-dated version of this package installed?
-  needs_upgrade <- function() {
-    if (system.file(package = pkg) == "")
-      return(FALSE)
-    if (utils::packageVersion(pkg) >= version)
-      return(FALSE)
-    TRUE
-  }
 
   msg <- sprintf(
     "This version of Shiny is designed to work with '%s' >= %s.
@@ -43,7 +35,7 @@ register_upgrade_message <- function(pkg, version) {
     pkg, version, pkg
   )
 
-  if (pkg %in% loadedNamespaces() && needs_upgrade()) {
+  if (pkg %in% loadedNamespaces() && !is_available(pkg, version)) {
     packageStartupMessage(msg)
   }
 
@@ -53,7 +45,7 @@ register_upgrade_message <- function(pkg, version) {
   setHook(
     packageEvent(pkg, "onLoad"),
     function(...) {
-      if (needs_upgrade()) packageStartupMessage(msg)
+      if (!is_available(pkg, version)) packageStartupMessage(msg)
     }
   )
 }

R/graph.R

@@ -1,31 +1,20 @@
-is_installed <- function(package, version) {
-  installedVersion <- tryCatch(utils::packageVersion(package), error = function(e) NA)
-  !is.na(installedVersion) && installedVersion >= version
-}
-
 # Check that the version of an suggested package satisfies the requirements
 #
 # @param package The name of the suggested package
 # @param version The version of the package
-check_suggested <- function(package, version, location) {
+check_suggested <- function(package, version = NULL) {
 
-  if (is_installed(package, version)) {
+  if (is_available(package, version)) {
     return()
   }
 
-  missing_location <- missing(location)
   msg <- paste0(
     sQuote(package),
-    if (is.na(version)) "" else paste0("(>= ", version, ")"),
-    " must be installed for this functionality.",
-    if (!missing_location)
-      paste0(
-        "\nPlease install the missing package: \n",
-        "  source(\"https://install-github.me/", location, "\")"
-      )
+    if (is.na(version %OR% NA)) "" else paste0("(>= ", version, ")"),
+    " must be installed for this functionality."
   )
 
-  if (interactive() && missing_location) {
+  if (interactive()) {
     message(msg, "\nWould you like to install it?")
     if (utils::menu(c("Yes", "No")) == 1) {
       return(utils::install.packages(package))
@@ -98,7 +87,8 @@ reactlog <- function() {
 }
 
 #' @describeIn reactlog Display a full reactlog graph for all sessions.
-#' @inheritParams reactlog::reactlog_show
+#' @param time A boolean that specifies whether or not to display the
+#' time that each reactive takes to calculate a result.
 #' @export
 reactlogShow <- function(time = TRUE) {
   check_reactlog()
@@ -190,10 +180,10 @@ RLog <- R6Class(
       paste0("names(", reactId, ")")
     },
     asListIdStr = function(reactId) {
-      paste0("as.list(", reactId, ")")
+      paste0("reactiveValuesToList(", reactId, ")")
     },
     asListAllIdStr = function(reactId) {
-      paste0("as.list(", reactId, ", all.names = TRUE)")
+      paste0("reactiveValuesToList(", reactId, ", all.names = TRUE)")
     },
     keyIdStr = function(reactId, key) {
       paste0(reactId, "$", key)

R/image-interact-opts.R

@@ -1,16 +1,27 @@
-#' Create an object representing click options
+#' Control interactive plot point events
 #'
-#' This generates an object representing click options, to be passed as the
-#' `click` argument of [imageOutput()] or
-#' [plotOutput()].
+#' These functions give control over the `click`, `dblClick` and
+#' `hover` events generated by [imageOutput()] and [plotOutput()].
 #'
 #' @param id Input value name. For example, if the value is `"plot_click"`,
-#'   then the click coordinates will be available as `input$plot_click`.
-#' @param clip Should the click area be clipped to the plotting area? If FALSE,
-#'   then the server will receive click events even when the mouse is outside
-#'   the plotting area, as long as it is still inside the image.
+#'   then the event data will be available as `input$plot_click`.
+#' @param clip Should the click area be clipped to the plotting area? If
+#'   `FALSE`, then the server will receive click events even when the mouse is
+#'   outside the plotting area, as long as it is still inside the image.
+#' @param delay For `dblClickOpts()`: the maximum delay (in ms) between a
+#'   pair clicks for them to be counted as a double-click.
+#'
+#'   For `hoverOpts()`: how long to delay (in ms) when debouncing or throttling
+#'   before sending the mouse location to the server.
+#' @param delayType The type of algorithm for limiting the number of hover
+#'   events. Use `"throttle"` to limit the number of hover events to one
+#'   every `delay` milliseconds. Use `"debounce"` to suspend events
+#'   while the cursor is moving, and wait until the cursor has been at rest for
+#'   `delay` milliseconds before sending an event.
+#' @seealso [brushOpts()] for brushing events.
 #' @export
-clickOpts <- function(id = NULL, clip = TRUE) {
+#' @keywords internal
+clickOpts <- function(id, clip = TRUE) {
   if (is.null(id))
     stop("id must not be NULL")
 
@@ -21,22 +32,9 @@ clickOpts <- function(id = NULL, clip = TRUE) {
 }
 
 
-#' Create an object representing double-click options
-#'
-#' This generates an object representing dobule-click options, to be passed as
-#' the `dblclick` argument of [imageOutput()] or
-#' [plotOutput()].
-#'
-#' @param id Input value name. For example, if the value is
-#'   `"plot_dblclick"`, then the click coordinates will be available as
-#'   `input$plot_dblclick`.
-#' @param clip Should the click area be clipped to the plotting area? If FALSE,
-#'   then the server will receive double-click events even when the mouse is
-#'   outside the plotting area, as long as it is still inside the image.
-#' @param delay Maximum delay (in ms) between a pair clicks for them to be
-#'   counted as a double-click.
 #' @export
-dblclickOpts <- function(id = NULL, clip = TRUE, delay = 400) {
+#' @rdname clickOpts
+dblclickOpts <- function(id, clip = TRUE, delay = 400) {
   if (is.null(id))
     stop("id must not be NULL")
 
@@ -47,29 +45,12 @@ dblclickOpts <- function(id = NULL, clip = TRUE, delay = 400) {
   )
 }
 
-#' Create an object representing hover options
-#'
-#' This generates an object representing hovering options, to be passed as the
-#' `hover` argument of [imageOutput()] or
-#' [plotOutput()].
-#'
-#' @param id Input value name. For example, if the value is `"plot_hover"`,
-#'   then the hover coordinates will be available as `input$plot_hover`.
-#' @param delay How long to delay (in milliseconds) when debouncing or
-#'   throttling, before sending the mouse location to the server.
-#' @param delayType The type of algorithm for limiting the number of hover
-#'   events. Use `"throttle"` to limit the number of hover events to one
-#'   every `delay` milliseconds. Use `"debounce"` to suspend events
-#'   while the cursor is moving, and wait until the cursor has been at rest for
-#'   `delay` milliseconds before sending an event.
-#' @param clip Should the hover area be clipped to the plotting area? If FALSE,
-#'   then the server will receive hover events even when the mouse is outside
-#'   the plotting area, as long as it is still inside the image.
 #' @param nullOutside If `TRUE` (the default), the value will be set to
 #'   `NULL` when the mouse exits the plotting area. If `FALSE`, the
 #'   value will stop changing when the cursor exits the plotting area.
 #' @export
-hoverOpts <- function(id = NULL, delay = 300,
+#' @rdname clickOpts
+hoverOpts <- function(id, delay = 300,
                       delayType = c("debounce", "throttle"), clip = TRUE,
                       nullOutside = TRUE) {
   if (is.null(id))
@@ -116,8 +97,9 @@ hoverOpts <- function(id = NULL, delay = 300,
 #'   `FALSE`, is useful if you want to update the plot while keeping the
 #'   brush. Using `TRUE` is useful if you want to clear the brush whenever
 #'   the plot is updated.
+#' @seealso [clickOpts()] for clicking events.
 #' @export
-brushOpts <- function(id = NULL, fill = "#9cf", stroke = "#036",
+brushOpts <- function(id, fill = "#9cf", stroke = "#036",
                       opacity = 0.25, delay = 300,
                       delayType = c("debounce", "throttle"), clip = TRUE,
                       direction = c("xy", "x", "y"),

R/image-interact.R

@@ -1,59 +1,76 @@
-#' Find rows of data that are selected by a brush
+#' Find rows of data selected on an interactive plot.
 #'
-#' This function returns rows from a data frame which are under a brush used
-#' with [plotOutput()].
+#' @description
+#' `brushedPoints()` returns rows from a data frame which are under a brush.
+#' `nearPoints()` returns rows from a data frame which are near a click, hover,
+#' or double-click. Alternatively, set `allRows = TRUE` to return all rows from
+#' the input data with an additional column `selected_` that indicates which
+#' rows of the would be selected.
 #'
-#' It is also possible for this function to return all rows from the input data
-#' frame, but with an additional column `selected_`, which indicates which
-#' rows of the input data frame are selected by the brush (`TRUE` for
-#' selected, `FALSE` for not-selected). This is enabled by setting
-#' `allRows=TRUE` option.
+#' @section ggplot2:
+#' For plots created with ggplot2, it is not necessary to specify the
+#' column names to `xvar`, `yvar`, `panelvar1`, and `panelvar2` as that
+#' information can be automatically derived from the plot specification.
 #'
-#' The `xvar`, `yvar`, `panelvar1`, and `panelvar2`
-#' arguments specify which columns in the data correspond to the x variable, y
-#' variable, and panel variables of the plot. For example, if your plot is
-#' `plot(x=cars$speed, y=cars$dist)`, and your brush is named
-#' `"cars_brush"`, then you would use `brushedPoints(cars,
-#' input$cars_brush, "speed", "dist")`.
-#'
-#' For plots created with ggplot2, it should not be necessary to specify the
-#' column names; that information will already be contained in the brush,
-#' provided that variables are in the original data, and not computed. For
-#' example, with `ggplot(cars, aes(x=speed, y=dist)) + geom_point()`, you
-#' could use `brushedPoints(cars, input$cars_brush)`. If, however, you use
-#' a computed column, like `ggplot(cars, aes(x=speed/2, y=dist)) +
-#' geom_point()`, then it will not be able to automatically extract column names
-#' and filter on them. If you want to use this function to filter data, it is
-#' recommended that you not use computed columns; instead, modify the data
+#' Note, however, that this will not work if you use a computed column, like
+#' `aes(speed/2, dist))`. Instead, we recommend that you modify the data
 #' first, and then make the plot with "raw" columns in the modified data.
 #'
-#' If a specified x or y column is a factor, then it will be coerced to an
-#' integer vector. If it is a character vector, then it will be coerced to a
-#' factor and then integer vector. This means that the brush will be considered
-#' to cover a given character/factor value when it covers the center value.
+#' @section Brushing:
+#' If x or y column is a factor, then it will be coerced to an integer vector.
+#' If it is a character vector, then it will be coerced to a factor and then
+#' integer vector. This means that the brush will be considered to cover a
+#' given character/factor value when it covers the center value.
 #'
 #' If the brush is operating in just the x or y directions (e.g., with
 #' `brushOpts(direction = "x")`, then this function will filter out points
 #' using just the x or y variable, whichever is appropriate.
 #'
-#' @param brush The data from a brush, such as `input$plot_brush`.
+#' @returns
+#' A data frame based on `df`, containing the observations selected by the
+#' brush or near the click event. For `nearPoints()`, the rows will be sorted
+#' by distance to the event.
+#'
+#' If `allRows = TRUE`, then all rows will returned, along with a new
+#' `selected_` column that indicates whether or not the point was selected.
+#' The output from `nearPoints()` will no longer be sorted, but you can
+#' set `addDist = TRUE` to get an additional column that gives the pixel
+#' distance to the pointer.
+#'
 #' @param df A data frame from which to select rows.
-#' @param xvar,yvar A string with the name of the variable on the x or y axis.
-#'   This must also be the name of a column in `df`. If absent, then this
-#'   function will try to infer the variable from the brush (only works for
-#'   ggplot2).
-#' @param panelvar1,panelvar2 Each of these is a string with the name of a panel
-#'   variable. For example, if with ggplot2, you facet on a variable called
-#'   `cyl`, then you can use `"cyl"` here. However, specifying the
-#'   panel variable should not be necessary with ggplot2; Shiny should be able
-#'   to auto-detect the panel variable.
+#' @param brush,coordinfo The data from a brush or click/dblclick/hover event
+#'   e.g. `input$plot_brush`, `input$plot_click`.
+#' @param xvar,yvar A string giving the name of the variable on the x or y axis.
+#'   These are only required for base graphics, and must be the name of
+#'   a column in `df`.
+#' @param panelvar1,panelvar2 A string giving the name of a panel variable.
+#'   For expert use only; in most cases these will be automatically
+#'   derived from the ggplot2 spec.
 #' @param allRows If `FALSE` (the default) return a data frame containing
 #'   the selected rows. If `TRUE`, the input data frame will have a new
-#'   column, `selected_`, which indicates whether the row was inside the
-#'   brush (`TRUE`) or outside the brush (`FALSE`).
-#'
+#'   column, `selected_`, which indicates whether the row was selected or not.
+#' @param threshold A maximum distance (in pixels) to the pointer location.
+#'   Rows in the data frame will be selected if the distance to the pointer is
+#'   less than `threshold`.
+#' @param maxpoints Maximum number of rows to return. If `NULL` (the default),
+#'   will return all rows within the threshold distance.
+#' @param addDist If TRUE, add a column named `dist_` that contains the
+#'   distance from the coordinate to the point, in pixels. When no pointer
+#'   event has yet occurred, the value of `dist_` will be `NA`.
 #' @seealso [plotOutput()] for example usage.
 #' @export
+#' @examples
+#' \dontrun{
+#' # Note that in practice, these examples would need to go in reactives
+#' # or observers.
+#'
+#' # This would select all points within 5 pixels of the click
+#' nearPoints(mtcars, input$plot_click)
+#'
+#' # Select just the nearest point within 10 pixels of the click
+#' nearPoints(mtcars, input$plot_click, threshold = 10, maxpoints = 1)
+#'
+#' }
 brushedPoints <- function(df, brush, xvar = NULL, yvar = NULL,
                           panelvar1 = NULL, panelvar2 = NULL,
                           allRows = FALSE) {
@@ -191,56 +208,8 @@ brushedPoints <- function(df, brush, xvar = NULL, yvar = NULL,
 #  $ direction: chr "y"
 
 
-#'Find rows of data that are near a click/hover/double-click
-#'
-#'This function returns rows from a data frame which are near a click, hover, or
-#'double-click, when used with [plotOutput()]. The rows will be sorted
-#'by their distance to the mouse event.
-#'
-#'It is also possible for this function to return all rows from the input data
-#'frame, but with an additional column `selected_`, which indicates which
-#'rows of the input data frame are selected by the brush (`TRUE` for
-#'selected, `FALSE` for not-selected). This is enabled by setting
-#'`allRows=TRUE` option. If this is used, the resulting data frame will not
-#'be sorted by distance to the mouse event.
-#'
-#'The `xvar`, `yvar`, `panelvar1`, and `panelvar2` arguments
-#'specify which columns in the data correspond to the x variable, y variable,
-#'and panel variables of the plot. For example, if your plot is
-#'`plot(x=cars$speed, y=cars$dist)`, and your click variable is named
-#'`"cars_click"`, then you would use `nearPoints(cars,
-#'input$cars_brush, "speed", "dist")`.
-#'
-#'@inheritParams brushedPoints
-#'@param coordinfo The data from a mouse event, such as `input$plot_click`.
-#'@param threshold A maxmimum distance to the click point; rows in the data
-#'  frame where the distance to the click is less than `threshold` will be
-#'  returned.
-#'@param maxpoints Maximum number of rows to return. If NULL (the default),
-#'  return all rows that are within the threshold distance.
-#'@param addDist If TRUE, add a column named `dist_` that contains the
-#'  distance from the coordinate to the point, in pixels. When no mouse event
-#'  has yet occured, the value of `dist_` will be `NA`.
-#'@param allRows If `FALSE` (the default) return a data frame containing
-#'  the selected rows. If `TRUE`, the input data frame will have a new
-#'  column, `selected_`, which indicates whether the row was inside the
-#'  selected by the mouse event (`TRUE`) or not (`FALSE`).
-#'
-#'@seealso [plotOutput()] for more examples.
-#'
-#' @examples
-#' \dontrun{
-#' # Note that in practice, these examples would need to go in reactives
-#' # or observers.
-#'
-#' # This would select all points within 5 pixels of the click
-#' nearPoints(mtcars, input$plot_click)
-#'
-#' # Select just the nearest point within 10 pixels of the click
-#' nearPoints(mtcars, input$plot_click, threshold = 10, maxpoints = 1)
-#'
-#' }
-#'@export
+#' @export
+#' @rdname brushedPoints
 nearPoints <- function(df, coordinfo, xvar = NULL, yvar = NULL,
                        panelvar1 = NULL, panelvar2 = NULL,
                        threshold = 5, maxpoints = NULL, addDist = FALSE,

R/imageutils.R

@@ -1,17 +1,47 @@
 startPNG <- function(filename, width, height, res, ...) {
-  # If quartz is available, use png() (which will default to quartz).
-  # Otherwise, if the Cairo package is installed, use CairoPNG().
-  # Finally, if neither quartz nor Cairo, use png().
-  if (capabilities("aqua")) {
+  # shiny.useragg is an experimental option that isn't officially supported or
+  # documented. It's here in the off chance that someone really wants
+  # to use ragg (say, instead of showtext, for custom font rendering).
+  # In the next shiny release, this option will likely be superseded in
+  # favor of a fully customizable graphics device option
+  if ((getOption('shiny.useragg') %OR% FALSE) && is_available("ragg")) {
+    pngfun <- ragg::agg_png
+  } else if (capabilities("aqua")) {
+    # i.e., png(type = 'quartz')
     pngfun <- grDevices::png
-  } else if ((getOption('shiny.usecairo') %OR% TRUE) &&
-      nchar(system.file(package = "Cairo"))) {
+  } else if ((getOption('shiny.usecairo') %OR% TRUE) && is_available("Cairo")) {
     pngfun <- Cairo::CairoPNG
   } else {
+    # i.e., png(type = 'cairo')
     pngfun <- grDevices::png
   }
 
-  pngfun(filename=filename, width=width, height=height, res=res, ...)
+  args <- rlang::list2(filename=filename, width=width, height=height, res=res, ...)
+
+  # Set a smarter default for the device's bg argument (based on thematic's global state).
+  # Note that, technically, this is really only needed for CairoPNG, since the other
+  # devices allow their bg arg to be overridden by par(bg=...), which thematic does prior
+  # to plot-time, but it shouldn't hurt to inform other the device directly as well
+  if (is.null(args$bg) && isNamespaceLoaded("thematic")) {
+    # TODO: use :: once thematic is on CRAN
+    args$bg <- utils::getFromNamespace("thematic_get_option", "thematic")("bg", "white")
+    # auto vals aren't resolved until plot time, so if we see one, resolve it
+    if (isTRUE("auto" == args$bg)) {
+      args$bg <- getCurrentOutputInfo()[["bg"]]()
+    }
+  }
+
+  # Handle both bg and background device arg
+  # https://github.com/r-lib/ragg/issues/35
+  fmls <- names(formals(pngfun))
+  if (("background" %in% fmls) && (!"bg" %in% fmls)) {
+    if (is.null(args$background)) {
+      args$background <- args$bg
+    }
+    args$bg <- NULL
+  }
+
+  do.call(pngfun, args)
   # Call plot.new() so that even if no plotting operations are performed at
   # least we have a blank background. N.B. we need to set the margin to 0
   # temporarily before plot.new() because when the plot size is small (e.g.

R/input-action.R

@@ -16,7 +16,7 @@
 #'
 #' ui <- fluidPage(
 #'   sliderInput("obs", "Number of observations", 0, 1000, 500),
-#'   actionButton("goButton", "Go!"),
+#'   actionButton("goButton", "Go!", class = "btn-success"),
 #'   plotOutput("distPlot")
 #' )
 #'
@@ -36,6 +36,10 @@
 #'
 #' }
 #'
+#' ## Example of adding extra class values
+#' actionButton("largeButton", "Large Primary Button", class = "btn-primary btn-lg")
+#' actionLink("infoLink", "Information Link", class = "btn-info")
+#'
 #' @seealso [observeEvent()] and [eventReactive()]
 #'
 #' @section Server value:

R/input-date.R

@@ -110,6 +110,10 @@ dateInput <- function(inputId, label, value = NULL, min = NULL, max = NULL,
     shinyInputLabel(inputId, label),
     tags$input(type = "text",
                class = "form-control",
+               # `aria-labelledby` attribute is required for accessibility to avoid doubled labels (#2951).
+               `aria-labelledby` = paste0(inputId, "-label"),
+               # title attribute is announced for screen readers for date format.
+               title = paste("Date format:", format),
                `data-date-language` = language,
                `data-date-week-start` = weekstart,
                `data-date-format` = format,
@@ -124,19 +128,48 @@ dateInput <- function(inputId, label, value = NULL, min = NULL, max = NULL,
                `data-date-days-of-week-disabled` =
                    jsonlite::toJSON(daysofweekdisabled, null = 'null')
     ),
-    datePickerDependency
+    datePickerDependency()
   )
 }
 
-datePickerDependency <- htmlDependency(
-  "bootstrap-datepicker", "1.6.4", c(href = "shared/datepicker"),
-  script = "js/bootstrap-datepicker.min.js",
-  stylesheet = "css/bootstrap-datepicker3.min.css",
-  # Need to enable noConflict mode. See #1346.
-  head = "<script>
-(function() {
-  var datepicker = $.fn.datepicker.noConflict();
-  $.fn.bsDatepicker = datepicker;
-})();
-</script>"
-)
+
+datePickerVersion <- "1.9.0"
+
+datePickerDependency <- function(theme) {
+  list(
+    htmlDependency(
+      name = "bootstrap-datepicker-js",
+      version = datePickerVersion,
+      src = c(href = "shared/datepicker"),
+      script = "js/bootstrap-datepicker.min.js",
+      # Need to enable noConflict mode. See #1346.
+      head = "<script>(function() {
+        var datepicker = $.fn.datepicker.noConflict();
+        $.fn.bsDatepicker = datepicker;
+      })();
+     </script>"
+    ),
+    bootstraplib::bs_dependency_defer(datePickerCSS)
+  )
+}
+
+datePickerCSS <- function(theme) {
+  if (!is_bs_theme(theme)) {
+    return(htmlDependency(
+      name = "bootstrap-datepicker-css",
+      version = datePickerVersion,
+      src = c(href = "shared/datepicker"),
+      stylesheet = "css/bootstrap-datepicker3.min.css"
+    ))
+  }
+
+  scss_file <- system.file(package = "shiny", "www/shared/datepicker/scss/build3.scss")
+
+  bootstraplib::bs_dependency(
+    input = sass::sass_file(scss_file),
+    theme = theme,
+    name = "bootstrap-datepicker",
+    version = datePickerVersion,
+    cache_key_extra = utils::packageVersion("shiny")
+  )
+}

R/input-daterange.R

@@ -100,6 +100,10 @@ dateRangeInput <- function(inputId, label, start = NULL, end = NULL,
         tags$input(
           class = "form-control",
           type = "text",
+          # `aria-labelledby` attribute is required for accessibility to avoid doubled labels (#2951).
+          `aria-labelledby` = paste0(inputId, "-label"),
+          # title attribute is announced for screen readers for date format.
+          title = paste("Date format:", format),
           `data-date-language` = language,
           `data-date-week-start` = weekstart,
           `data-date-format` = format,
@@ -118,6 +122,10 @@ dateRangeInput <- function(inputId, label, start = NULL, end = NULL,
         tags$input(
           class = "form-control",
           type = "text",
+          # `aria-labelledby` attribute is required for accessibility to avoid doubled labels (#2951).
+          `aria-labelledby` = paste0(inputId, "-label"),
+          # title attribute is announced for screen readers for date format.
+          title = paste("Date format:", format),
           `data-date-language` = language,
           `data-date-week-start` = weekstart,
           `data-date-format` = format,
@@ -129,6 +137,6 @@ dateRangeInput <- function(inputId, label, start = NULL, end = NULL,
         )
       )
     ),
-    datePickerDependency
+    datePickerDependency()
   )
 }

R/input-file.R

@@ -91,7 +91,8 @@ fileInput <- function(inputId, label, multiple = FALSE, accept = NULL,
     id = inputId,
     name = inputId,
     type = "file",
-    style = "display: none;",
+    # Don't use "display: none;" style, which causes keyboard accessibility issue; instead use the following workaround: https://css-tricks.com/places-its-tempting-to-use-display-none-but-dont/
+    style = "position: absolute !important; top: -99999px !important; left: -99999px !important;",
     `data-restore` = restoredValue
   )
 

R/input-radiobuttons.R

@@ -11,22 +11,22 @@
 #' @inheritParams textInput
 #' @param choices List of values to select from (if elements of the list are
 #'   named then that name rather than the value is displayed to the user). If
-#'   this argument is provided, then `choiceNames` and `choiceValues`
-#'   must not be provided, and vice-versa. The values should be strings; other
-#'   types (such as logicals and numbers) will be coerced to strings.
-#' @param selected The initially selected value (if not specified then defaults
-#'   to the first value)
+#'   this argument is provided, then `choiceNames` and `choiceValues` must not
+#'   be provided, and vice-versa. The values should be strings; other types
+#'   (such as logicals and numbers) will be coerced to strings.
+#' @param selected The initially selected value. If not specified, then it
+#'   defaults to the first item in `choices`. To start with no items selected,
+#'   use `character(0)`.
 #' @param inline If `TRUE`, render the choices inline (i.e. horizontally)
 #' @return A set of radio buttons that can be added to a UI definition.
 #' @param choiceNames,choiceValues List of names and values, respectively, that
 #'   are displayed to the user in the app and correspond to the each choice (for
-#'   this reason, `choiceNames` and `choiceValues` must have the same
-#'   length). If either of these arguments is provided, then the other
-#'   *must* be provided and `choices` *must not* be provided. The
-#'   advantage of using both of these over a named list for `choices` is
-#'   that `choiceNames` allows any type of UI object to be passed through
-#'   (tag objects, icons, HTML code, ...), instead of just simple text. See
-#'   Examples.
+#'   this reason, `choiceNames` and `choiceValues` must have the same length).
+#'   If either of these arguments is provided, then the other *must* be provided
+#'   and `choices` *must not* be provided. The advantage of using both of these
+#'   over a named list for `choices` is that `choiceNames` allows any type of UI
+#'   object to be passed through (tag objects, icons, HTML code, ...), instead
+#'   of just simple text. See Examples.
 #'
 #' @family input elements
 #' @seealso [updateRadioButtons()]
@@ -82,7 +82,8 @@
 #' }
 #'
 #' @section Server value:
-#' A character string containing the value of the selected button.
+#'
+#'   A character string containing the value of the selected button.
 #'
 #' @export
 radioButtons <- function(inputId, label, choices = NULL, selected = NULL,

R/input-select.R

@@ -12,6 +12,14 @@
 #' name will be treated as a placeholder prompt. For example:
 #' `selectInput("letter", "Letter", c("Choose one" = "", LETTERS))`
 #'
+#' **Performance note:** `selectInput()` and `selectizeInput()` can slow down
+#' significantly when thousands of choices are used; with legacy browsers like
+#' Internet Explorer, the user interface may hang for many seconds. For large
+#' numbers of choices, Shiny offers a "server-side selectize" option that
+#' massively improves performance and efficiency; see
+#' [this selectize article](https://shiny.rstudio.com/articles/selectize.html)
+#' on the Shiny Dev Center for details.
+#'
 #' @inheritParams textInput
 #' @param choices List of values to select from. If elements of the list are
 #'   named, then that name --- rather than the value --- is displayed to the
@@ -100,7 +108,7 @@ selectInput <- function(inputId, label, choices, selected = NULL,
     id = inputId,
     class = if (!selectize) "form-control",
     size = size,
-    selectOptions(choices, selected)
+    selectOptions(choices, selected, inputId, selectize)
   )
   if (multiple)
     selectTag$attribs$multiple <- "multiple"
@@ -125,16 +133,22 @@ firstChoice <- function(choices) {
 }
 
 # Create tags for each of the options; use <optgroup> if necessary.
-# This returns a HTML string instead of tags, because of the 'selected'
-# attribute.
-selectOptions <- function(choices, selected = NULL) {
+# This returns a HTML string instead of tags for performance reasons.
+selectOptions <- function(choices, selected = NULL, inputId, perfWarning = FALSE) {
+  if (length(choices) >= 1000) {
+    warning("The select input \"", inputId, "\" contains a large number of ",
+      "options; consider using server-side selectize for massively improved ",
+      "performance. See the Details section of the ?selectizeInput help topic.",
+      call. = FALSE)
+  }
+
   html <- mapply(choices, names(choices), FUN = function(choice, label) {
     if (is.list(choice)) {
       # If sub-list, create an optgroup and recurse into the sublist
       sprintf(
         '<optgroup label="%s">\n%s\n</optgroup>',
         htmlEscape(label, TRUE),
-        selectOptions(choice, selected)
+        selectOptions(choice, selected, inputId, perfWarning)
       )
 
     } else {
@@ -183,24 +197,25 @@ selectizeInput <- function(inputId, ..., options = NULL, width = NULL) {
 
 # given a select input and its id, selectize it
 selectizeIt <- function(inputId, select, options, nonempty = FALSE) {
+  # Make sure accessibility plugin is included
+  if (!('selectize-plugin-a11y' %in% options$plugins)) {
+    options$plugins <- c(options$plugins, list('selectize-plugin-a11y'))
+  }
+
   res <- checkAsIs(options)
 
-  selectizeDep <- htmlDependency(
-    "selectize", "0.11.2", c(href = "shared/selectize"),
-    stylesheet = "css/selectize.bootstrap3.css",
-    head = format(tagList(
-      HTML('<!--[if lt IE 9]>'),
-      tags$script(src = 'shared/selectize/js/es5-shim.min.js'),
-      HTML('<![endif]-->'),
-      tags$script(src = 'shared/selectize/js/selectize.min.js')
-    ))
-  )
+  selectizeDep <- selectizeDependency()
 
   if ('drag_drop' %in% options$plugins) {
-    selectizeDep <- list(selectizeDep, htmlDependency(
-      'jqueryui', '1.12.1', c(href = 'shared/jqueryui'),
-      script = 'jquery-ui.min.js'
-    ))
+    selectizeDep <- c(
+      selectizeDep,
+      htmlDependency(
+        'jqueryui',
+        '1.12.1',
+        c(href = 'shared/jqueryui'),
+        script = 'jquery-ui.min.js'
+      )
+    )
   }
 
   # Insert script on same level as <select> tag
@@ -218,10 +233,50 @@ selectizeIt <- function(inputId, select, options, nonempty = FALSE) {
 }
 
 
+selectizeVersion <- "0.12.4"
 
+selectizeDependency <- function(theme) {
+  list(
+    htmlDependency(
+      "selectize-js",
+      selectizeVersion,
+      src = c(href = "shared/selectize"),
+      script = c(
+        "js/selectize.min.js",
+        # Accessibility plugin for screen readers (https://github.com/SLMNBJ/selectize-plugin-a11y):
+        "accessibility/js/selectize-plugin-a11y.min.js"
+      )
+    ),
+    bootstraplib::bs_dependency_defer(selectizeCSS)
+  )
+}
 
+selectizeCSS <- function(theme) {
+  if (!is_bs_theme(theme)) {
+    return(htmlDependency(
+      name = "selectize-css",
+      version = selectizeVersion,
+      src = c(href = "shared/selectize"),
+      stylesheet = "css/selectize.bootstrap3.css"
+    ))
+  }
 
-
+  scss_file <- system.file(
+    package = "shiny", "www/shared/selectize/scss",
+    if ("3" %in% bootstraplib::theme_version(theme)) {
+      "selectize.bootstrap3.scss"
+    } else {
+      "selectize.bootstrap4.scss"
+    }
+  )
+  bootstraplib::bs_dependency(
+    input = sass::sass_file(scss_file),
+    theme = theme,
+    name = "selectize",
+    version = selectizeVersion,
+    cache_key_extra = utils::packageVersion("shiny")
+  )
+}
 
 
 #' Select variables from a data frame

R/input-slider.R

@@ -79,8 +79,7 @@ sliderInput <- function(inputId, label, min, max, value, step = NULL,
                         round = FALSE, format = NULL, locale = NULL,
                         ticks = TRUE, animate = FALSE, width = NULL, sep = ",",
                         pre = NULL, post = NULL, timeFormat = NULL,
-                        timezone = NULL, dragRange = TRUE)
-{
+                        timezone = NULL, dragRange = TRUE) {
   if (!missing(format)) {
     shinyDeprecated(msg = "The `format` argument to sliderInput is deprecated. Use `sep`, `pre`, and `post` instead.",
                     version = "0.10.2.2")
@@ -144,6 +143,7 @@ sliderInput <- function(inputId, label, min, max, value, step = NULL,
   sliderProps <- dropNulls(list(
     class = "js-range-slider",
     id = inputId,
+    `data-skin` = "shiny",
     `data-type` = if (length(value) > 1) "double",
     `data-min` = formatNoSci(min),
     `data-max` = formatNoSci(max),
@@ -205,20 +205,59 @@ sliderInput <- function(inputId, label, min, max, value, step = NULL,
     )
   }
 
-  dep <- list(
-    htmlDependency("ionrangeslider", "2.1.6", c(href="shared/ionrangeslider"),
-      script = "js/ion.rangeSlider.min.js",
-      # ion.rangeSlider also needs normalize.css, which is already included in
-      # Bootstrap.
-      stylesheet = c("css/ion.rangeSlider.css",
-                     "css/ion.rangeSlider.skinShiny.css")
+  attachDependencies(sliderTag, ionRangeSliderDependency())
+}
+
+
+ionRangeSliderVersion <- "2.3.1"
+
+ionRangeSliderDependency <- function() {
+  list(
+    # ion.rangeSlider also needs normalize.css, which is already included in Bootstrap.
+    htmlDependency(
+      "ionrangeslider-javascript", ionRangeSliderVersion,
+      src = c(href = "shared/ionrangeslider"),
+      script = "js/ion.rangeSlider.min.js"
     ),
-    htmlDependency("strftime", "0.9.2", c(href="shared/strftime"),
+    htmlDependency(
+      "strftime", "0.9.2",
+      src = c(href = "shared/strftime"),
       script = "strftime-min.js"
+    ),
+    bootstraplib::bs_dependency_defer(ionRangeSliderDependencyCSS)
+  )
+}
+
+ionRangeSliderDependencyCSS <- function(theme) {
+  if (!is_bs_theme(theme)) {
+    return(htmlDependency(
+      "ionrangeslider-css",
+      ionRangeSliderVersion,
+      src = c(href = "shared/ionrangeslider"),
+      stylesheet = "css/ion.rangeSlider.css"
+    ))
+  }
+
+  # Remap some variable names for ionRangeSlider's scss
+  sass_input <- list(
+    list(
+      bg = "$input-bg",
+      fg = "$input-color",
+      accent = "$component-active-bg",
+      `font-family` = "$font-family-base"
+    ),
+    sass::sass_file(
+      system.file(package = "shiny", "www/shared/ionrangeslider/scss/shiny.scss")
     )
   )
 
-  attachDependencies(sliderTag, dep)
+  bootstraplib::bs_dependency(
+    input = sass_input,
+    theme = theme,
+    name = "ionRangeSlider",
+    version = ionRangeSliderVersion,
+    cache_key_extra = utils::packageVersion("shiny")
+  )
 }
 
 hasDecimals <- function(value) {
@@ -226,7 +265,6 @@ hasDecimals <- function(value) {
   return (!identical(value, truncatedValue))
 }
 
-
 # If step is NULL, use heuristic to set the step size.
 findStepSize <- function(min, max, step) {
   if (!is.null(step)) return(step)

R/input-textarea.R

@@ -51,7 +51,8 @@ textAreaInput <- function(inputId, label, value = "", width = NULL, height = NUL
   }
 
   style <- paste(
-    if (!is.null(width))  paste0("width: ",  validateCssUnit(width),  ";"),
+    # The width is specified on the parent div.
+    if (!is.null(width)) paste0("width: ",  "100%",  ";"),
     if (!is.null(height)) paste0("height: ", validateCssUnit(height), ";"),
     if (!is.null(resize)) paste0("resize: ", resize, ";")
   )
@@ -62,6 +63,7 @@ textAreaInput <- function(inputId, label, value = "", width = NULL, height = NUL
 
   div(class = "form-group shiny-input-container",
     shinyInputLabel(inputId, label),
+    style = if (!is.null(width)) paste0("width: ", validateCssUnit(width), ";"),
     tags$textarea(
       id = inputId,
       class = "form-control",

R/input-utils.R

@@ -3,6 +3,8 @@ shinyInputLabel <- function(inputId, label = NULL) {
     label,
     class = "control-label",
     class = if (is.null(label)) "shiny-label-null",
+    # `id` attribute is required for `aria-labelledby` used by screen readers:
+    id = paste0(inputId, "-label"),
     `for` = inputId
   )
 }

R/knitr.R

@@ -0,0 +1,80 @@
+#' Knitr S3 methods
+#'
+#' These S3 methods are necessary to help Shiny applications and UI chunks embed
+#' themselves in knitr/rmarkdown documents.
+#'
+#' @name knitr_methods
+#' @param x Object to knit_print
+#' @param ... Additional knit_print arguments
+NULL
+
+# If there's an R Markdown runtime option set but it isn't set to Shiny, then
+# return a warning indicating the runtime is inappropriate for this object.
+# Returns NULL in all other cases.
+shiny_rmd_warning <- function() {
+  runtime <- knitr::opts_knit$get("rmarkdown.runtime")
+  if (!is.null(runtime) && runtime != "shiny")
+    # note that the RStudio IDE checks for this specific string to detect Shiny
+    # applications in static document
+    list(structure(
+      "Shiny application in a static R Markdown document",
+      class = "rmd_warning"))
+  else
+    NULL
+}
+
+#' @rdname knitr_methods
+knit_print.shiny.appobj <- function(x, ...) {
+  opts <- x$options %OR% list()
+  width <- if (is.null(opts$width)) "100%" else opts$width
+  height <- if (is.null(opts$height)) "400" else opts$height
+
+  runtime <- knitr::opts_knit$get("rmarkdown.runtime")
+  if (!is.null(runtime) && runtime != "shiny") {
+    # If not rendering to a Shiny document, create a box exactly the same
+    # dimensions as the Shiny app would have had (so the document continues to
+    # flow as it would have with the app), and display a diagnostic message
+    width <- validateCssUnit(width)
+    height <- validateCssUnit(height)
+    output <- tags$div(
+      style=paste("width:", width, "; height:", height, "; text-align: center;",
+                  "box-sizing: border-box;", "-moz-box-sizing: border-box;",
+                  "-webkit-box-sizing: border-box;"),
+      class="muted well",
+      "Shiny applications not supported in static R Markdown documents")
+  }
+  else {
+    path <- addSubApp(x)
+    output <- deferredIFrame(path, width, height)
+  }
+
+  # If embedded Shiny apps ever have JS/CSS dependencies (like pym.js) we'll
+  # need to grab those and put them in meta, like in knit_print.shiny.tag. But
+  # for now it's not an issue, so just return the HTML and warning.
+
+  knitr::asis_output(htmlPreserve(format(output, indent=FALSE)),
+                     meta = shiny_rmd_warning(), cacheable = FALSE)
+}
+
+# Let us use a nicer syntax in knitr chunks than literally
+# calling output$value <- renderFoo(...) and fooOutput().
+#' @rdname knitr_methods
+#' @param inline Whether the object is printed inline.
+knit_print.shiny.render.function <- function(x, ..., inline = FALSE) {
+  x <- htmltools::as.tags(x, inline = inline)
+  output <- knitr::knit_print(tagList(x))
+  attr(output, "knit_cacheable") <- FALSE
+  attr(output, "knit_meta") <- append(attr(output, "knit_meta"),
+                                      shiny_rmd_warning())
+  output
+}
+
+# Lets us drop reactive expressions directly into a knitr chunk and have the
+# value printed out! Nice for teaching if nothing else.
+#' @rdname knitr_methods
+knit_print.reactive <- function(x, ..., inline = FALSE) {
+  renderFunc <- if (inline) renderText else renderPrint
+  knitr::knit_print(renderFunc({
+    x()
+  }), inline = inline)
+}

R/middleware.R

@@ -14,7 +14,26 @@
 # returns `NULL`, or an `httpResponse`.
 #
 ## ------------------------------------------------------------------------
-httpResponse <- function(status = 200,
+
+#' Create an HTTP response object
+#'
+#' @param status HTTP status code for the response.
+#' @param content_type The value for the `Content-Type` header.
+#' @param content The body of the response, given as a single-element character
+#'   vector (will be encoded as UTF-8) or a raw vector.
+#' @param headers A named list of additional headers to include. Do not include
+#'   `Content-Length` (as it is automatically calculated) or `Content-Type` (the
+#'   `content_type` argument is used instead).
+#'
+#' @examples
+#' httpResponse(status = 405L,
+#'   content_type = "text/plain",
+#'   content = "The requested method was not allowed"
+#' )
+#'
+#' @keywords internal
+#' @export
+httpResponse <- function(status = 200L,
                          content_type = "text/html; charset=UTF-8",
                          content = "",
                          headers = list()) {
@@ -311,16 +330,32 @@ HandlerManager <- R6Class("HandlerManager",
         },
         call = .httpServer(
           function (req) {
-            withCallingHandlers(withLogErrors(handlers$invoke(req)),
-              error = function(cond) {
-                sanitizeErrors <- getOption('shiny.sanitize.errors', FALSE)
-                if (inherits(cond, 'shiny.custom.error') || !sanitizeErrors) {
-                  stop(cond$message, call. = FALSE)
-                } else {
-                  stop(paste("An error has occurred. Check your logs or",
-                             "contact the app author for clarification."),
-                       call. = FALSE)
+            hybrid_chain(
+              hybrid_chain(
+                withCallingHandlers(withLogErrors(handlers$invoke(req)),
+                  error = function(cond) {
+                    sanitizeErrors <- getOption('shiny.sanitize.errors', FALSE)
+                    if (inherits(cond, 'shiny.custom.error') || !sanitizeErrors) {
+                      stop(cond$message, call. = FALSE)
+                    } else {
+                      stop(paste("An error has occurred. Check your logs or",
+                                 "contact the app author for clarification."),
+                           call. = FALSE)
+                    }
+                  }
+                ),
+                catch = function(err) {
+                  httpResponse(status = 500L,
+                    content_type = "text/html",
+                    content = as.character(htmltools::htmlTemplate(
+                      system.file("template", "error.html", package = "shiny"),
+                      message = conditionMessage(err)
+                    ))
+                  )
                 }
+              ),
+              function(resp) {
+                maybeInjectAutoreload(resp)
               }
             )
           },
@@ -390,6 +425,22 @@ HandlerManager <- R6Class("HandlerManager",
   )
 )
 
+maybeInjectAutoreload <- function(resp) {
+  if (getOption("shiny.autoreload", FALSE) &&
+      isTRUE(grepl("^text/html($|;)", resp$content_type)) &&
+      is.character(resp$content)) {
+
+    resp$content <- gsub(
+      "</head>",
+      "<script src=\"shared/shiny-autoreload.js\"></script>\n</head>",
+      resp$content,
+      fixed = TRUE
+    )
+  }
+
+  resp
+}
+
 # Safely get the Content-Length of a Rook response, or NULL if the length cannot
 # be determined for whatever reason (probably malformed response$content).
 # If deleteOwnedContent is TRUE, then the function should delete response

R/mock-session.R

@@ -31,7 +31,6 @@ extract <- function(promise) {
 #' @noRd
 #' @export
 `$.mockclientdata` <- function(x, name) {
-  if (name == "allowDataUriScheme") { return(TRUE) }
   if (name == "pixelratio") { return(1) }
   if (name == "url_protocol") { return("http:") }
   if (name == "url_hostname") { return("mocksession") }
@@ -69,45 +68,197 @@ extract <- function(promise) {
   stop("Single-bracket indexing of mockclientdata is not allowed.")
 }
 
+#' @noRd
+mapNames <- function(func, vals) {
+  names(vals) <- vapply(names(vals), func, character(1))
+  vals
+}
+
+#' Returns a noop implementation of the public method `name` of ShinySession.
+#' @include shiny.R
+#' @noRd
+makeNoop <- function(name, msg = paste0(name, " is a noop.")) {
+  if (!(name %in% names(ShinySession$public_methods)))
+    stop(name, " is not public method of ShinySession.")
+  impl <- ShinySession$public_methods[[name]]
+  body(impl) <- rlang::expr({
+    # Force arguments
+    !!lapply(formalArgs(impl), rlang::sym)
+    # Evade "no visible binding" note for reference to `private`
+    (!!as.symbol("private"))$noopWarn(!!name, !!msg)
+    invisible()
+  })
+  impl
+}
+
+#' Accepts a series of symbols as arguments and generates corresponding noop
+#' implementations.
+#' @noRd
+makeWarnNoops <- function(...) {
+  methods <- as.character(list(...))
+  names(methods) <- methods
+  lapply(methods, makeNoop)
+}
+
+#' Returns an implementation of a ShinySession public method that signals an
+#' error.
+#' @include shiny.R
+#' @noRd
+makeError <- function(name, msg = paste0(name, " is for internal use only.")) {
+  if (!(name %in% names(ShinySession$public_methods)))
+    stop(name, " is not public method of ShinySession.")
+  impl <- ShinySession$public_methods[[name]]
+  body(impl) <- rlang::expr({
+    base::stop(!!msg)
+  })
+  impl
+}
+
+#' Accepts a series of named arguments. Each name corresponds to a ShinySession
+#' public method that should signal an error, and each argument corresponds to
+#' an error message.
+#' @noRd
+makeErrors <- function(...) {
+  errors <- rlang::list2(...)
+  mapply(makeError, names(errors), errors, USE.NAMES = TRUE, SIMPLIFY = FALSE)
+}
+
+#' @noRd
+makeExtraMethods <- function() {
+  c(makeWarnNoops(
+    "allowReconnect",
+    "decrementBusyCount",
+    "doBookmark",
+    "exportTestValues",
+    "flushOutput",
+    "getBookmarkExclude",
+    "getTestSnapshotUrl",
+    "incrementBusyCount",
+    "manageHiddenOutputs",
+    "manageInputs",
+    "onBookmark",
+    "onBookmarked",
+    "onInputReceived",
+    "onRestore",
+    "onRestored",
+    "outputOptions",
+    "reactlog",
+    # TODO Consider implementing this. Would require a new method like
+    # session$getDataObj() to access in a test expression.
+    "registerDataObj",
+    "reload",
+    "resetBrush",
+    "sendBinaryMessage",
+    "sendChangeTabVisibility",
+    "sendCustomMessage",
+    "sendInputMessage",
+    "sendInsertTab",
+    "sendInsertUI",
+    "sendModal",
+    "setCurrentTheme",
+    "sendNotification",
+    "sendProgress",
+    "sendRemoveTab",
+    "sendRemoveUI",
+    "setBookmarkExclude",
+    "setShowcase",
+    "showProgress",
+    "updateQueryString"
+  ), makeErrors(
+    `@uploadEnd` = "for internal use only",
+    `@uploadInit` = "for internal use only",
+    createBookmarkObservers = "for internal use only",
+    dispatch = "for internal use only",
+    handleRequest = "for internal use only",
+    requestFlush = "for internal use only",
+    startTiming = "for internal use only",
+    wsClosed = "for internal use only"
+  ))
+}
+
+#' @description Adds generated instance methods to a MockShinySession instance.
+#'   Note that `lock_objects = FALSE` must be set in the call to `R6Class()`
+#'   that produced the generator object of the instance.
+#' @param instance instance of an R6 object, generally a `MockShinySession`.
+#' @param methods named list of method names to method implementation functions.
+#'   In our typical usage, each function is derived from a public method of
+#'   `ShinySession`. The environment of each implementation function is set to
+#'   `instance$.__enclos_env` before the method is added.
+#' @noRd
+addGeneratedInstanceMethods <- function(instance, methods = makeExtraMethods()) {
+  mapply(function(name, impl) {
+    environment(impl) <- instance$.__enclos_env__
+    instance[[name]] <- impl
+  }, names(methods), methods)
+}
+
 #' Mock Shiny Session
 #'
-#' @description
-#' An R6 class suitable for testing that simulates the `session` parameter
-#' provided to Shiny server functions or modules.
+#' @description An R6 class suitable for testing purposes. Simulates, to the
+#'   extent possible, the behavior of the `ShinySession` class. The `session`
+#'   parameter provided to Shiny server functions and modules is an instance of
+#'   a `ShinySession` in normal operation.
+#'
+#'   Most kinds of module and server testing do not require this class be
+#'   instantiated manually. See instead [testServer()].
+#'
+#'   In order to support advanced usage, instances of `MockShinySession` are
+#'   **unlocked** so that public methods and fields of instances may be
+#'   modified. For example, in order to test authentication workflows, the
+#'   `user` or `groups` fields may be overridden. Modified instances of
+#'   `MockShinySession` may then be passed explicitly as the `session` argument
+#'   of [testServer()].
 #'
 #' @include timer.R
 #' @export
 MockShinySession <- R6Class(
   'MockShinySession',
   portable = FALSE,
-  class = FALSE,
+  lock_objects = FALSE,
   public = list(
     #' @field env The environment associated with the session.
     env = NULL,
-    #' @field singletons Hardcoded as empty. Needed for rendering HTML (i.e. renderUI)
+    #' @field returned The value returned by the module under test.
+    returned = NULL,
+    #' @field singletons Hardcoded as empty. Needed for rendering HTML (i.e. renderUI).
     singletons = character(0),
-    #' @field clientData Mock client data that always returns a size for plots
+    #' @field clientData Mock client data that always returns a size for plots.
     clientData = structure(list(), class="mockclientdata"),
-    #' @description No-op
-    #' @param logEntry Not used
-    reactlog = function(logEntry){},
-    #' @description No-op
-    incrementBusyCount = function(){},
-    #' @field output The shinyoutputs associated with the session
+    #' @field output The shinyoutputs associated with the session.
     output = NULL,
-    #' @field input The reactive inputs associated with the session
+    #' @field input The reactive inputs associated with the session.
     input = NULL,
     #' @field userData An environment initialized as empty.
     userData = NULL,
-    #' @field progressStack A stack of progress objects
+    #' @field progressStack A stack of progress objects.
     progressStack = 'Stack',
+    #' @field token On a real `ShinySession`, used to identify this instance in URLs.
+    token = 'character',
+    #' @field cache The session cache MemoryCache.
+    cache = NULL,
+    #' @field appcache The app cache MemoryCache.
+    appcache = NULL,
+    #' @field restoreContext Part of bookmarking support in a real
+    #'   `ShinySession` but always `NULL` for a `MockShinySession`.
+    restoreContext = NULL,
+    #' @field groups Character vector of groups associated with an authenticated
+    #'   user. Always `NULL` for a `MockShinySesion`.
+    groups = NULL,
+    #' @field user The username of an authenticated user. Always `NULL` for a
+    #'   `MockShinySession`.
+    user = NULL,
+    #' @field options A list containing session-level shinyOptions.
+    options = NULL,
 
-    #' @description Create a new MockShinySession
+    #' @description Create a new MockShinySession.
     initialize = function() {
       private$.input <- ReactiveValues$new(dedupe = FALSE, label = "input")
       private$flushCBs <- Callbacks$new()
       private$flushedCBs <- Callbacks$new()
       private$endedCBs <- Callbacks$new()
+
+      private$file_generators <- fastmap()
+
       private$timer <- MockableTimerCallbacks$new()
       self$progressStack <- Stack$new()
 
@@ -120,6 +271,19 @@ MockShinySession <- R6Class(
 
       # Create a read-only copy of the inputs reactive.
       self$input <- .createReactiveValues(private$.input, readonly = TRUE)
+
+      self$token <- createUniqueId(16)
+
+      # Copy app-level options
+      self$options <- getCurrentAppState()$options
+
+      self$cache <- MemoryCache$new()
+      self$appcache <- MemoryCache$new()
+
+      # Adds various generated noop and error-producing method implementations.
+      # Note that noop methods can be configured to produce warnings by setting
+      # the option shiny.mocksession.warn = TRUE; see $noopWarn() for details.
+      addGeneratedInstanceMethods(self)
     },
     #' @description Define a callback to be invoked before a reactive flush
     #' @param fun The function to invoke
@@ -156,16 +320,24 @@ MockShinySession <- R6Class(
     },
 
     #' @description Returns `FALSE` if the session has not yet been closed
-    isEnded = function(){ private$closed },
+    isEnded = function(){ private$was_closed },
     #' @description Returns `FALSE` if the session has not yet been closed
-    isClosed = function(){ private$closed },
+    isClosed = function(){ private$was_closed },
     #' @description Closes the session
-    close = function(){ private$closed <- TRUE },
+    close = function(){
+      for (output in private$output) {
+        output$suspend()
+      }
+      withReactiveDomain(self, {
+        private$endedCBs$invoke(onError = printError, ..stacktraceon = TRUE)
+      })
+      private$was_closed <- TRUE
+    },
 
     #FIXME: this is wrong. Will need to be more complex.
     #' @description Unsophisticated mock implementation that merely invokes
-    #'   the given callback immediately.
-    #' @param callback The callback ato be invoked.
+    #   the given callback immediately.
+    #' @param callback The callback to be invoked.
     cycleStartAction = function(callback){ callback() },
 
     #' @description Base64-encode the given file. Needed for image rendering.
@@ -182,14 +354,17 @@ MockShinySession <- R6Class(
       return(paste('data:', contentType, ';base64,', b64, sep=''))
     },
 
-    #' @description Sets reactive values associated with the `session$inputs` object
-    #'   and flushes the reactives.
-    #' @param ... The inputs to set.
+    #' @description Sets reactive values associated with the `session$inputs`
+    #'  object and flushes the reactives.
+    #' @param ... The inputs to set. These arguments are processed with
+    #'  [rlang::list2()] and so are _[dynamic][rlang::dyn-dots]_. Input names
+    #'  may not be duplicated.
     #' @examples
-    #' s <- MockShinySession$new()
-    #' s$setInputs(x=1, y=2)
+    #' \dontrun{
+    #' session$setInputs(x=1, y=2)
+    #' }
     setInputs = function(...) {
-      vals <- list(...)
+      vals <- rlang::dots_list(..., .homonyms = "error")
       mapply(names(vals), vals, FUN = function(name, value) {
         private$.input$set(name, value)
       })
@@ -197,8 +372,10 @@ MockShinySession <- R6Class(
     },
 
     #' @description An internal method which shouldn't be used by others.
+    #'   Schedules `callback` for execution after some number of `millis`
+    #'   milliseconds.
     #' @param millis The number of milliseconds on which to schedule a callback
-    #' @param callback The function to schedule
+    #' @param callback The function to schedule.
     .scheduleTask = function(millis, callback) {
       id <- private$timer$schedule(millis, callback)
 
@@ -237,15 +414,17 @@ MockShinySession <- R6Class(
     },
 
     #' @description An internal method which shouldn't be used by others.
+    #' @return Elapsed time in milliseconds.
     .now = function() {
-      # Returns elapsed time in milliseconds
       private$timer$getElapsed()
     },
 
     #' @description An internal method which shouldn't be used by others.
-    #' @param name The name of the output
-    #' @param func The render definition
-    #' @param label Not used
+    #'   Defines an output in a way that sets private$currentOutputName
+    #'   appropriately.
+    #' @param name The name of the output.
+    #' @param func The render definition.
+    #' @param label Not used.
     defineOutput = function(name, func, label) {
       force(name)
 
@@ -262,7 +441,7 @@ MockShinySession <- R6Class(
         # We could just stash the promise, but we get an "unhandled promise error". This bypasses
         prom <- NULL
         tryCatch({
-          v <- func(self, name)
+          v <- private$withCurrentOutput(name, func(self, name))
           if (!promises::is.promise(v)){
             # Make our sync value into a promise
             prom <- promises::promise(function(resolve, reject){ resolve(v) })
@@ -285,8 +464,11 @@ MockShinySession <- R6Class(
       private$outs[[name]] <- list(obs = obs, func = func, promise = NULL)
     },
 
-    #' @description An internal method which shouldn't be used by others.
-    #' @param name The name of the output
+    #' @description An internal method which shouldn't be used by others. Forces
+    #'   evaluation of any reactive dependencies of the output function.
+    #' @param name The name of the output.
+    #' @return The return value of the function responsible for rendering the
+    #'   output.
     getOutput = function(name) {
       # Unlike the real outputs, we're going to return the last value rather than the unevaluated function
       if (is.null(private$outs[[name]])) {
@@ -307,75 +489,19 @@ MockShinySession <- R6Class(
       v <- extract(private$outs[[name]]$promise)
       if (!is.null(v$err)){
         stop(v$err)
+      } else if (private$file_generators$has(self$ns(name))) {
+        download <- private$file_generators$get(self$ns(name))
+        private$renderFile(self$ns(name), download)
       } else {
         v$val
       }
     },
 
-    #' @description No-op
-    #' @param name Not used
-    #' @param data Not used
-    #' @param filterFunc Not used
-    registerDataObj = function(name, data, filterFunc) {},
-    #' @description No-op
-    #' @param value Not used
-    allowReconnect = function(value) {},
-    #' @description No-op
-    reload = function() {},
-    #' @description No-op
-    #' @param brushId Not used
-    resetBrush = function(brushId) {
-      warning("session$brush isn't meaningfully mocked on the MockShinySession")
-    },
-    #' @description No-op
-    #' @param type Not used
-    #' @param message Not used
-    sendCustomMessage = function(type, message) {},
-    #' @description No-op
-    #' @param type Not used
-    #' @param message Not used
-    sendBinaryMessage = function(type, message) {},
-    #' @description No-op
-    #' @param inputId Not used
-    #' @param message Not used
-    sendInputMessage = function(inputId, message) {},
-    #' @description No-op
-    #' @param names Not used
-    setBookmarkExclude = function(names) {
-      warning("Bookmarking isn't meaningfully mocked in MockShinySession")
-    },
-    #' @description No-op
-    getBookmarkExclude = function() {
-      warning("Bookmarking isn't meaningfully mocked in MockShinySession")
-    },
-    #' @description No-op
-    #' @param fun Not used
-    onBookmark = function(fun) {},
-    #' @description No-op
-    #' @param fun Not used
-    onBookmarked = function(fun) {},
-    #' @description No-op
-    doBookmark = function() {
-      warning("Bookmarking isn't meaningfully mocked in MockShinySession")
-    },
-    #' @description No-op
-    #' @param fun Not used
-    onRestore = function(fun) {},
-    #' @description No-op
-    #' @param fun Not used
-    onRestored = function(fun) {},
-    #' @description No-op
-    exportTestValues = function() {},
-    #' @description No-op
-    #' @param input Not used
-    #' @param output Not used
-    #' @param export Not used
-    #' @param format Not used
-    getTestSnapshotUrl = function(input=TRUE, output=TRUE, export=TRUE, format="json") {},
-    #' @description Returns the given id prefixed by `mock-session-`.
-    #' @param id The id to modify.
+    #' @description Returns the given id prefixed by this namespace's id.
+    #' @param id The id to prefix with a namespace id.
+    #' @return The id with a namespace prefix.
     ns = function(id) {
-      paste0("mock-session-", id) # TODO: does this need to be more complex/intelligent?
+      NS(private$nsPrefix, id)
     },
     #' @description Trigger a reactive flush right now.
     flushReact = function(){
@@ -383,46 +509,205 @@ MockShinySession <- R6Class(
     },
     #' @description Create and return a namespace-specific session proxy.
     #' @param namespace Character vector indicating a namespace.
+    #' @return A new session proxy.
     makeScope = function(namespace) {
       ns <- NS(namespace)
       createSessionProxy(
         self,
         input = .createReactiveValues(private$.input, readonly = TRUE, ns = ns),
         output = structure(.createOutputWriter(self, ns = ns), class = "shinyoutput"),
-        makeScope = function(namespace) self$makeScope(ns(namespace))
+        makeScope = function(namespace) self$makeScope(ns(namespace)),
+        ns = function(namespace) ns(namespace),
+        setInputs = function(...) {
+          self$setInputs(!!!mapNames(ns, rlang::dots_list(..., .homonyms = "error")))
+        }
       )
+    },
+    #' @description Set the environment associated with a testServer() call, but
+    #'  only if it has not previously been set. This ensures that only the
+    #'  environment of the outermost module under test is the one retained. In
+    #'  other words, the first assignment wins.
+    #' @param env The environment to retain.
+    #' @return The provided `env`.
+    setEnv = function(env) {
+      if (is.null(self$env)) {
+        stopifnot(all(c("input", "output", "session") %in% ls(env)))
+        self$env <- env
+      }
+    },
+    #' @description Set the value returned by the module call and proactively
+    #'  flush. Note that this method may be called multiple times if modules
+    #'  are nested. The last assignment, corresponding to an invocation of
+    #'  setReturned() in the outermost module, wins.
+    #' @param value The value returned from the module
+    #' @return The provided `value`.
+    setReturned = function(value) {
+      self$returned <- value
+      value
+    },
+    #' @description Get the value returned by the module call.
+    #' @return The value returned by the module call
+    getReturned = function() self$returned,
+    #' @description Generate a distinct character identifier for use as a proxy
+    #'   namespace.
+    #' @return A character identifier unique to the current session.
+    genId = function() {
+      private$idCounter <- private$idCounter + 1
+      paste0("proxy", private$idCounter)
+    },
+    #' @description Provides a way to access the root `MockShinySession` from
+    #'   any descendant proxy.
+    #' @return The root `MockShinySession`.
+    rootScope = function() {
+      self
+    },
+    #' @description Called by observers when a reactive expression errors.
+    #' @param e An error object.
+    unhandledError = function(e) {
+      self$close()
+    },
+    #' @description Freeze a value until the flush cycle completes.
+    #' @param x A `ReactiveValues` object.
+    #' @param name The name of a reactive value within `x`.
+    freezeValue = function(x, name) {
+      if (!is.reactivevalues(x))
+        stop("x must be a reactivevalues object")
+
+      impl <- .subset2(x, 'impl')
+      key <- .subset2(x, 'ns')(name)
+      impl$freeze(key)
+      self$onFlushed(function() impl$thaw(key))
+    },
+    #' @description Registers the given callback to be invoked when the session
+    #'   is closed (i.e. the connection to the client has been severed). The
+    #'   return value is a function which unregisters the callback. If multiple
+    #'   callbacks are registered, the order in which they are invoked is not
+    #'   guaranteed.
+    #' @param sessionEndedCallback Function to call when the session ends.
+    onSessionEnded = function(sessionEndedCallback) {
+      self$onEnded(sessionEndedCallback)
+    },
+    #' @description Associated a downloadable file with the session.
+    #' @param name The un-namespaced output name to associate with the
+    #'   downloadable file.
+    #' @param filename A string or function designating the name of the file.
+    #' @param contentType A string of the content type of the file. Not used by
+    #'   `MockShinySession`.
+    #' @param content A function that takes a single argument file that is a
+    #'   file path (string) of a nonexistent temp file, and writes the content
+    #'   to that file path. (Reactive values and functions may be used from this
+    #'   function.)
+    registerDownload = function(name, filename, contentType, content) {
+      private$file_generators$set(self$ns(name), list(
+        filename = if (is.function(filename)) filename else function() filename,
+        content = content
+      ))
+    },
+    #' @description Get information about the output that is currently being
+    #'   executed.
+    #' @return A list with with the `name` of the output. If no output is
+    #'   currently being executed, this will return `NULL`.
+    getCurrentOutputInfo = function() {
+      name <- private$currentOutputName
+      if (is.null(name)) NULL else list(name = name)
     }
   ),
   private = list(
+    # @field .input Internal ReactiveValues object for normal input sent from client.
     .input = NULL,
+    # @field flushCBs `Callbacks` called before flush.
     flushCBs = NULL,
+    # @field flushedCBs `Callbacks` called after flush.
     flushedCBs = NULL,
+    # @field endedCBs `Callbacks` called when session ends.
     endedCBs = NULL,
+    # @field timer `MockableTimerCallbacks` called at particular times.
     timer = NULL,
-    closed = FALSE,
+    # @field was_closed Set to `TRUE` once the session is closed.
+    was_closed = FALSE,
+    # @field outs List of namespaced output names.
     outs = list(),
-    returnedVal = NULL,
+    # @field nsPrefix Prefix with which to namespace inputs and outputs.
+    nsPrefix = "mock-session",
+    # @field idCounter Incremented every time `$genId()` is called.
+    idCounter = 0,
+    # @field file_generators Map of namespaced output names to lists with
+    #   `filename` and `output` elements, each a function. Updated by
+    #   `$registerDownload()` and read by `$getOutput()`. Files are generated
+    #   on demand when the output is accessed.
+    file_generators = NULL,
+    # @field currentOutputName Namespaced name of the currently executing
+    #'   output, or `NULL` if no output is currently executing.
+    currentOutputName = NULL,
 
+    # @description Writes a downloadable file to disk. If the `content` function
+    #   associated with a download handler does not write a file, an error is
+    #   signaled. Created files are deleted upon session close.
+    # @param name The eamespaced output name associated with the downloadable
+    #   file.
+    # @param download List with two names, `filename` and `content`. Both should
+    #   be functions. `filename` should take no arguments and return a string.
+    #   `content` should accept a path argument and create a file at that path.
+    # @return A path to a temp file.
+    renderFile = function(name, download) {
+      # We make our own tempdir here because it's not safe to delete the result
+      # of tempdir().
+      tmpd <- tempfile()
+      dir.create(tmpd, recursive = TRUE)
+      self$onSessionEnded(function() unlink(tmpd, recursive = TRUE))
+      file <- file.path(tmpd, download$filename())
+      download$content(file)
+      if (!file.exists(file))
+        error("downloadHandler for ", name, " did not write a file.")
+      file
+    },
+
+    # @description Calls `shiny:::flushReact()` and executes all callbacks
+    #   related to reactivity.
     flush = function(){
       isolate(private$flushCBs$invoke(..stacktraceon = TRUE))
       shiny:::flushReact() # namespace to avoid calling our own method
       isolate(private$flushedCBs$invoke(..stacktraceon = TRUE))
       later::run_now()
+    },
+
+    # @description Produces a warning if the option `shiny.mocksession.warn` is
+    #   unset and not `FALSE`.
+    # @param name The name of the mocked method.
+    # @param msg A message describing why the method is not implemented.
+    noopWarn = function(name, msg) {
+      if (getOption("shiny.mocksession.warn", FALSE) == FALSE)
+        return(invisible())
+      out <- paste0(name, " is not fully implemented by MockShinySession: ", msg)
+      out <- paste0(out, "\n", "To disable messages like this, run `options(shiny.mocksession.warn=FALSE)`")
+      warning(out, call. = FALSE)
+    },
+
+    # @description Binds a domain to `expr` and uses `createVarPromiseDomain()`
+    #   to ensure `private$currentOutputName` is set to `name` around any of
+    #   the promise's callbacks. Domains are something like dynamic scopes but
+    #   for promise chains instead of the call stack.
+    # @return A promise.
+    withCurrentOutput = function(name, expr) {
+      if (!is.null(private$currentOutputName)) {
+        stop("Nested calls to withCurrentOutput() are not allowed.")
+      }
+
+      promises::with_promise_domain(
+        createVarPromiseDomain(private, "currentOutputName", name),
+        expr
+      )
     }
   ),
   active = list(
-    # If assigning to `returned`, proactively flush
-    #' @field returned The value returned from the module
-    returned = function(value){
-      if(missing(value)){
-        return(private$returnedVal)
-      }
-      # When you assign to returned, that implies that you just ran
-      # the module. So we should proactively flush. We have to do this
-      # here since flush is private.
-      private$returnedVal <- value
-      private$flush()
-    },
+    #' @field files For internal use only.
+    files = function() stop("$files is for internal use only."),
+    #' @field downloads For internal use only.
+    downloads = function() stop("$downloads is for internal use only."),
+    #' @field closed Deprecated in `ShinySession` and signals an error.
+    closed = function() stop("$closed is deprecated"),
+    #' @field session Deprecated in ShinySession and signals an error.
+    session = function() stop("$session is deprecated"),
     #' @field request An empty environment where the request should be. The request isn't meaningfully mocked currently.
     request = function(value) {
       if (!missing(value)){
@@ -433,4 +718,3 @@ MockShinySession <- R6Class(
     }
   )
 )
-

R/modal.R

@@ -29,10 +29,16 @@ removeModal <- function(session = getDefaultReactiveDomain()) {
 
 #' Create a modal dialog UI
 #'
-#' This creates the UI for a modal dialog, using Bootstrap's modal class. Modals
-#' are typically used for showing important messages, or for presenting UI that
-#' requires input from the user, such as a username and password input.
+#' @description
+#' `modalDialog()` creates the UI for a modal dialog, using Bootstrap's modal
+#' class. Modals are typically used for showing important messages, or for
+#' presenting UI that requires input from the user, such as a user name and
+#' password input.
 #'
+#' `modalButton()` creates a button that will dismiss the dialog when clicked,
+#' typically used when customising the `footer`.
+#'
+#' @inheritParams actionButton
 #' @param ... UI elements for the body of the modal dialog box.
 #' @param title An optional title for the dialog.
 #' @param footer UI for footer. Use `NULL` for no footer.
@@ -41,7 +47,7 @@ removeModal <- function(session = getDefaultReactiveDomain()) {
 #' @param easyClose If `TRUE`, the modal dialog can be dismissed by
 #'   clicking outside the dialog box, or be pressing the Escape key. If
 #'   `FALSE` (the default), the modal dialog can't be dismissed in those
-#'   ways; instead it must be dismissed by clicking on the dismiss button, or
+#'   ways; instead it must be dismissed by clicking on a `modalButton()`, or
 #'   from a call to [removeModal()] on the server.
 #' @param fade If `FALSE`, the modal dialog will have no fade-in animation
 #'   (it will simply appear rather than fade in to view).
@@ -169,13 +175,8 @@ modalDialog <- function(..., title = NULL, footer = modalButton("Dismiss"),
   )
 }
 
-#' Create a button for a modal dialog
-#'
-#' When clicked, a `modalButton` will dismiss the modal dialog.
-#'
-#' @inheritParams actionButton
-#' @seealso [modalDialog()] for examples.
 #' @export
+#' @rdname modalDialog
 modalButton <- function(label, icon = NULL) {
   tags$button(type = "button", class = "btn btn-default",
     `data-dismiss` = "modal", validateIcon(icon), label

R/modules.R

@@ -36,7 +36,6 @@ createSessionProxy <- function(parentSession, ...) {
 
 `[[<-.session_proxy` <- `$<-.session_proxy`
 
-
 #' Shiny modules
 #'
 #' Shiny's module feature lets you break complicated UI and server logic into
@@ -44,14 +43,14 @@ createSessionProxy <- function(parentSession, ...) {
 #' modules are easier to reuse and easier to reason about. See the article at
 #' <http://shiny.rstudio.com/articles/modules.html> to learn more.
 #'
-#' Starting in Shiny 1.5.0, we recommend using `moduleFunction` instead of
-#' `callModule`, because syntax is a little easier to understand.
+#' Starting in Shiny 1.5.0, we recommend using `moduleServer` instead of
+#' [`callModule()`], because the syntax is a little easier
+#' to understand, and modules created with `moduleServer` can be tested with
+#' [`testServer()`].
 #'
 #' @param module A Shiny module server function.
 #' @param id An ID string that corresponds with the ID used to call the module's
 #'   UI function.
-#' @param ... For `callModule`, additional parameters to pass to module server
-#'   function.
 #' @param session Session from which to make a child scope (the default should
 #'   almost always be used).
 #'
@@ -70,16 +69,19 @@ createSessionProxy <- function(parentSession, ...) {
 #'
 #' # Define the server logic for a module
 #' counterServer <- function(id) {
-#'   moduleServer(id, function(input, output, session) {
-#'     count <- reactiveVal(0)
-#'     observeEvent(input$button, {
-#'       count(count() + 1)
-#'     })
-#'     output$out <- renderText({
-#'       count()
-#'     })
-#'     count
-#'   })
+#'   moduleServer(
+#'     id,
+#'     function(input, output, session) {
+#'       count <- reactiveVal(0)
+#'       observeEvent(input$button, {
+#'         count(count() + 1)
+#'       })
+#'       output$out <- renderText({
+#'         count()
+#'       })
+#'       count
+#'     }
+#'   )
 #' }
 #'
 #' # Use the module in an app
@@ -91,7 +93,9 @@ createSessionProxy <- function(parentSession, ...) {
 #'   counterServer("counter1")
 #'   counterServer("counter2")
 #' }
-#' shinyApp(ui, server)
+#' if (interactive()) {
+#'   shinyApp(ui, server)
+#' }
 #'
 #'
 #'
@@ -99,16 +103,19 @@ createSessionProxy <- function(parentSession, ...) {
 #' # add them to your function. In this case `prefix` is text that will be
 #' # printed before the count.
 #' counterServer2 <- function(id, prefix = NULL) {
-#'   moduleServer(id, function(input, output, session) {
-#'     count <- reactiveVal(0)
-#'     observeEvent(input$button, {
-#'       count(count() + 1)
-#'     })
-#'     output$out <- renderText({
-#'       paste0(prefix, count())
-#'     })
-#'     count
-#'   })
+#'   moduleServer(
+#'     id,
+#'     function(input, output, session) {
+#'       count <- reactiveVal(0)
+#'       observeEvent(input$button, {
+#'         count(count() + 1)
+#'       })
+#'       output$out <- renderText({
+#'         paste0(prefix, count())
+#'       })
+#'       count
+#'     }
+#'   )
 #' }
 #'
 #' ui <- fluidPage(
@@ -117,18 +124,42 @@ createSessionProxy <- function(parentSession, ...) {
 #' server <- function(input, output, session) {
 #'   counterServer2("counter", "The current count is: ")
 #' }
-#' shinyApp(ui, server)
+#' if (interactive()) {
+#'   shinyApp(ui, server)
+#' }
 #'
 #' @export
 moduleServer <- function(id, module, session = getDefaultReactiveDomain()) {
-  callModule(module, id, session = session)
+  if (inherits(session, "MockShinySession")) {
+    body(module) <- rlang::expr({
+      session$setEnv(base::environment())
+      !!body(module)
+    })
+    session$setReturned(callModule(module, id, session = session))
+  } else {
+    callModule(module, id, session = session)
+  }
 }
 
 
-#' @rdname moduleServer
+#' Invoke a Shiny module
+#'
+#' Note: As of Shiny 1.5.0, we recommend using [`moduleServer()`] instead of
+#' [`callModule()`], because the syntax is a little easier
+#' to understand, and modules created with `moduleServer` can be tested with
+#' [`testServer()`].
+#'
+#' @param module A Shiny module server function
+#' @param id An ID string that corresponds with the ID used to call the module's
+#'   UI function
+#' @param ... Additional parameters to pass to module server function
+#' @param session Session from which to make a child scope (the default should
+#'   almost always be used)
+#'
+#' @return The return value, if any, from executing the module server function
 #' @export
 callModule <- function(module, id, ..., session = getDefaultReactiveDomain()) {
-  if (!inherits(session, "ShinySession") && !inherits(session, "session_proxy")) {
+  if (!inherits(session, c("ShinySession", "session_proxy", "MockShinySession"))) {
     stop("session must be a ShinySession or session_proxy object.")
   }
   childScope <- session$makeScope(id)

R/progress.R

@@ -204,7 +204,7 @@ Progress <- R6Class(
 #'   the server function. The default is to automatically find the session by
 #'   using the current reactive domain.
 #' @param expr The work to be done. This expression should contain calls to
-#'   `setProgress`.
+#'   [setProgress()] or [incProgress()].
 #' @param min The value that represents the starting point of the progress bar.
 #'   Must be less tham `max`. Default is 0.
 #' @param max The value that represents the end of the progress bar. Must be
@@ -227,6 +227,7 @@ Progress <- R6Class(
 #' @param value Single-element numeric vector; the value at which to set the
 #'   progress bar, relative to `min` and `max`.
 #'
+#' @return The result of `expr`.
 #' @examples
 #' ## Only run examples in interactive R sessions
 #' if (interactive()) {

R/reactives.R

@@ -222,7 +222,7 @@ reactiveVal <- function(value = NULL, label = NULL) {
         rv$set(x)
       }
     },
-    class = c("reactiveVal", "reactive"),
+    class = c("reactiveVal", "reactive", "function"),
     label = label,
     .impl = rv
   )
@@ -231,6 +231,12 @@ reactiveVal <- function(value = NULL, label = NULL) {
 #' @rdname freezeReactiveValue
 #' @export
 freezeReactiveVal <- function(x) {
+  if (getOption("shiny.deprecation.messages", TRUE) && getOption("shiny.deprecation.messages.freeze", TRUE)) {
+    rlang::warn(
+      "freezeReactiveVal() is soft-deprecated, and may be removed in a future version of Shiny. (See https://github.com/rstudio/shiny/issues/3063)",
+      .frequency = "once", .frequency_id = "freezeReactiveVal")
+  }
+
   domain <- getDefaultReactiveDomain()
   if (is.null(domain)) {
     stop("freezeReactiveVal() must be called when a default reactive domain is active.")
@@ -357,7 +363,7 @@ ReactiveValues <- R6Class(
       keyValue
     },
 
-    set = function(key, value) {
+    set = function(key, value, force = FALSE) {
       # if key exists
       #   if it is the same value, return
       #
@@ -389,10 +395,8 @@ ReactiveValues <- R6Class(
 
       key_exists <- .values$containsKey(key)
 
-      if (key_exists) {
-        if (.dedupe && identical(.values$get(key), value)) {
-          return(invisible())
-        }
+      if (key_exists && !isTRUE(force) && .dedupe && identical(.values$get(key), value)) {
+        return(invisible())
       }
 
       # set the value for better logging
@@ -469,10 +473,15 @@ ReactiveValues <- R6Class(
 
     # Mark a value as frozen If accessed while frozen, a shiny.silent.error will
     # be thrown.
-    freeze = function(key) {
+    freeze = function(key, invalidate = FALSE) {
       domain <- getDefaultReactiveDomain()
       rLog$freezeReactiveKey(.reactId, key, domain)
       setMeta(key, "frozen", TRUE)
+
+      if (invalidate) {
+        # Force an invalidation
+        self$set(key, NULL, force = TRUE)
+      }
     },
 
     thaw = function(key) {
@@ -727,7 +736,10 @@ str.reactivevalues <- function(object, indent.str = " ", ...) {
 #' thing that happens if `req(FALSE)` is called. The value is thawed
 #' (un-frozen; accessing it will no longer raise an exception) when the current
 #' reactive domain is flushed. In a Shiny application, this occurs after all of
-#' the observers are executed.
+#' the observers are executed. **NOTE:** We are considering deprecating
+#' `freezeReactiveVal`, and `freezeReactiveValue` except when `x` is `input`.
+#' If this affects your app, please let us know by leaving a comment on
+#' [this GitHub issue](https://github.com/rstudio/shiny/issues/3063).
 #'
 #' @param x For `freezeReactiveValue`, a [reactiveValues()]
 #'   object (like `input`); for `freezeReactiveVal`, a
@@ -969,7 +981,7 @@ reactive <- function(x, env = parent.frame(), quoted = FALSE, label = NULL,
   if (length(srcref) >= 2) attr(label, "srcref") <- srcref[[2]]
   attr(label, "srcfile") <- srcFileOfRef(srcref[[1]])
   o <- Observable$new(fun, label, domain, ..stacktraceon = ..stacktraceon)
-  structure(o$getValue, observable = o, class = c("reactiveExpr", "reactive"))
+  structure(o$getValue, observable = o, class = c("reactiveExpr", "reactive", "function"))
 }
 
 # Given the srcref to a reactive expression, attempts to figure out what the
@@ -1377,35 +1389,34 @@ observe <- function(x, env=parent.frame(), quoted=FALSE, label=NULL,
 #' already exist; if so, its value will be used as the initial value of the
 #' reactive variable (or `NULL` if the variable did not exist).
 #'
-#' @param symbol A character string indicating the name of the variable that
-#'   should be made reactive
-#' @param env The environment that will contain the reactive variable
-#'
+#' @param symbol Name of variable to make reactive, as a string.
+#' @param env Environment in which to create binding. Expert use only.
 #' @return None.
-#'
+#' @keywords internal
 #' @examples
-#' \dontrun{
+#' reactiveConsole(TRUE)
+#'
 #' a <- 10
 #' makeReactiveBinding("a")
+#'
 #' b <- reactive(a * -1)
 #' observe(print(b()))
+#'
 #' a <- 20
-#' }
+#' a <- 30
+#'
+#' reactiveConsole(FALSE)
 #' @export
 makeReactiveBinding <- function(symbol, env = parent.frame()) {
   if (exists(symbol, envir = env, inherits = FALSE)) {
     initialValue <- env[[symbol]]
     rm(list = symbol, envir = env, inherits = FALSE)
-  }
-  else
+  } else {
     initialValue <- NULL
-  values <- reactiveValues(value = initialValue)
-  makeActiveBinding(symbol, env=env, fun=function(v) {
-    if (missing(v))
-      values$value
-    else
-      values$value <- v
-  })
+  }
+
+  val <- reactiveVal(initialValue, label = symbol)
+  makeActiveBinding(symbol, val, env = env)
 
   invisible()
 }
@@ -1441,6 +1452,29 @@ setAutoflush <- local({
   }
 })
 
+
+#' Activate reactivity in the console
+#'
+#' This is an experimental feature that allows you to enable reactivity
+#' at the console, for the purposes of experimentation and learning.
+#'
+#' @keywords internal
+#' @param enabled Turn console reactivity on or off?
+#' @export
+#' @examples
+#' reactiveConsole(TRUE)
+#' x <- reactiveVal(10)
+#' y <- observe({
+#'   message("The value of x is ", x())
+#' })
+#' x(20)
+#' x(30)
+#' reactiveConsole(FALSE)
+reactiveConsole <- function(enabled) {
+  options(shiny.suppressMissingContextError = enabled)
+  setAutoflush(enabled)
+}
+
 # ---------------------------------------------------------------------------
 
 #' Timer

R/reexports.R

@@ -0,0 +1,195 @@
+####
+# Generated by `./tools/updateReexports.R`: do not edit by hand
+# Please call `source('tools/updateReexports.R') from the root folder to update`
+####
+
+
+# fastmap key_missing.Rd -------------------------------------------------------
+
+#' @importFrom fastmap key_missing
+#' @export
+fastmap::key_missing
+
+#' @importFrom fastmap is.key_missing
+#' @export
+fastmap::is.key_missing
+
+
+
+# htmltools builder.Rd ---------------------------------------------------------
+
+#' @importFrom htmltools tags
+#' @export
+htmltools::tags
+
+#' @importFrom htmltools p
+#' @export
+htmltools::p
+
+#' @importFrom htmltools h1
+#' @export
+htmltools::h1
+
+#' @importFrom htmltools h2
+#' @export
+htmltools::h2
+
+#' @importFrom htmltools h3
+#' @export
+htmltools::h3
+
+#' @importFrom htmltools h4
+#' @export
+htmltools::h4
+
+#' @importFrom htmltools h5
+#' @export
+htmltools::h5
+
+#' @importFrom htmltools h6
+#' @export
+htmltools::h6
+
+#' @importFrom htmltools a
+#' @export
+htmltools::a
+
+#' @importFrom htmltools br
+#' @export
+htmltools::br
+
+#' @importFrom htmltools div
+#' @export
+htmltools::div
+
+#' @importFrom htmltools span
+#' @export
+htmltools::span
+
+#' @importFrom htmltools pre
+#' @export
+htmltools::pre
+
+#' @importFrom htmltools code
+#' @export
+htmltools::code
+
+#' @importFrom htmltools img
+#' @export
+htmltools::img
+
+#' @importFrom htmltools strong
+#' @export
+htmltools::strong
+
+#' @importFrom htmltools em
+#' @export
+htmltools::em
+
+#' @importFrom htmltools hr
+#' @export
+htmltools::hr
+
+
+# htmltools tag.Rd -------------------------------------------------------------
+
+#' @importFrom htmltools tag
+#' @export
+htmltools::tag
+
+#' @importFrom htmltools tagList
+#' @export
+htmltools::tagList
+
+#' @importFrom htmltools tagAppendAttributes
+#' @export
+htmltools::tagAppendAttributes
+
+#' @importFrom htmltools tagHasAttribute
+#' @export
+htmltools::tagHasAttribute
+
+#' @importFrom htmltools tagGetAttribute
+#' @export
+htmltools::tagGetAttribute
+
+#' @importFrom htmltools tagAppendChild
+#' @export
+htmltools::tagAppendChild
+
+#' @importFrom htmltools tagAppendChildren
+#' @export
+htmltools::tagAppendChildren
+
+#' @importFrom htmltools tagSetChildren
+#' @export
+htmltools::tagSetChildren
+
+
+# htmltools HTML.Rd ------------------------------------------------------------
+
+#' @importFrom htmltools HTML
+#' @export
+htmltools::HTML
+
+
+# htmltools include.Rd ---------------------------------------------------------
+
+#' @importFrom htmltools includeHTML
+#' @export
+htmltools::includeHTML
+
+#' @importFrom htmltools includeText
+#' @export
+htmltools::includeText
+
+#' @importFrom htmltools includeMarkdown
+#' @export
+htmltools::includeMarkdown
+
+#' @importFrom htmltools includeCSS
+#' @export
+htmltools::includeCSS
+
+#' @importFrom htmltools includeScript
+#' @export
+htmltools::includeScript
+
+
+# htmltools singleton.Rd -------------------------------------------------------
+
+#' @importFrom htmltools singleton
+#' @export
+htmltools::singleton
+
+#' @importFrom htmltools is.singleton
+#' @export
+htmltools::is.singleton
+
+
+# htmltools validateCssUnit.Rd -------------------------------------------------
+
+#' @importFrom htmltools validateCssUnit
+#' @export
+htmltools::validateCssUnit
+
+
+# htmltools htmlTemplate.Rd ----------------------------------------------------
+
+#' @importFrom htmltools htmlTemplate
+#' @export
+htmltools::htmlTemplate
+
+
+# htmltools suppressDependencies.Rd --------------------------------------------
+
+#' @importFrom htmltools suppressDependencies
+#' @export
+htmltools::suppressDependencies
+
+
+# htmltools withTags.Rd --------------------------------------------------------
+
+#' @importFrom htmltools withTags
+#' @export
+htmltools::withTags

R/render-cached-plot.R

@@ -150,6 +150,8 @@
 #'   `"app"` (the default), `"session"`, or a cache object like
 #'   a [diskCache()]. See the Cache Scoping section for more
 #'   information.
+#' @param width,height not used. They are specified via the argument
+#'   `sizePolicy`.
 #'
 #' @seealso See [renderPlot()] for the regular, non-cached version of
 #'   this function. For more about configuring caches, see
@@ -295,7 +297,10 @@ renderCachedPlot <- function(expr,
   res = 72,
   cache = "app",
   ...,
-  outputArgs = list()
+  alt = "Plot object",
+  outputArgs = list(),
+  width = NULL,
+  height = NULL
 ) {
 
   # This ..stacktraceon is matched by a ..stacktraceoff.. when plotFunc
@@ -307,6 +312,11 @@ renderCachedPlot <- function(expr,
 
   args <- list(...)
 
+  if (!is.null(width) || !is.null(height)) {
+    warning("Unused argument(s) 'width' and/or 'height'. ",
+            "'sizePolicy' is used instead.")
+  }
+
   cacheKeyExpr <- substitute(cacheKeyExpr)
   # The real cache key we'll use also includes width, height, res, pixelratio.
   # This is just the part supplied by the user.
@@ -341,6 +351,14 @@ renderCachedPlot <- function(expr,
   # values get filled by an observer below.
   fitDims <- reactiveValues(width = NULL, height = NULL)
 
+  # Make sure alt param to be reactive function
+  if (is.reactive(alt))
+    altWrapper <- alt
+  else if (is.function(alt))
+    altWrapper <- reactive({ alt() })
+  else
+    altWrapper <- function() { alt }
+
   resizeObserver <- NULL
   ensureResizeObserver <- function() {
     if (!is.null(resizeObserver))
@@ -387,6 +405,8 @@ renderCachedPlot <- function(expr,
         isolate({
           width  <- fitDims$width
           height <- fitDims$height
+          # Make sure alt text to be reactive function
+          alt <- altWrapper()
         })
 
         pixelratio <- session$clientData$pixelratio %OR% 1
@@ -398,6 +418,7 @@ renderCachedPlot <- function(expr,
             func = isolatedFunc,
             width = width,
             height = height,
+            alt = alt,
             pixelratio = pixelratio,
             res = res
           ),
@@ -434,6 +455,7 @@ renderCachedPlot <- function(expr,
       function(userCacheKeyResult) {
         width  <- fitDims$width
         height <- fitDims$height
+        alt <- altWrapper()
         pixelratio <- session$clientData$pixelratio %OR% 1
 
         key <- digest::digest(list(outputName, userCacheKeyResult, width, height, res, pixelratio), "xxhash64")
@@ -449,6 +471,7 @@ renderCachedPlot <- function(expr,
             plotObj = plotObj,
             width = width,
             height = height,
+            alt = alt,
             pixelratio = pixelratio
           ))
         }
@@ -471,6 +494,7 @@ renderCachedPlot <- function(expr,
               plotObj = drawReactiveResult,
               width = width,
               height = height,
+              alt = alt,
               pixelratio = pixelratio
             )
           }
@@ -480,6 +504,7 @@ renderCachedPlot <- function(expr,
         hybrid_chain(possiblyAsyncResult, function(result) {
           width      <- result$width
           height     <- result$height
+          alt        <- result$alt
           pixelratio <- result$pixelratio
 
           # Three possibilities when we get here:
@@ -500,6 +525,7 @@ renderCachedPlot <- function(expr,
                 result$plotObj,
                 width,
                 height,
+                alt,
                 pixelratio,
                 res
               ),

R/render-plot.R

@@ -36,6 +36,12 @@
 #' @param res Resolution of resulting plot, in pixels per inch. This value is
 #'   passed to [grDevices::png()]. Note that this affects the resolution of PNG
 #'   rendering in R; it won't change the actual ppi of the browser.
+#' @param alt Alternate text for the HTML `<img>` tag
+#'   if it cannot be displayed or viewed (i.e., the user uses a screen reader).
+#'   In addition to a character string, the value may be a reactive expression
+#'   (or a function referencing reactive values) that returns a character string.
+#'   NULL or "" is not recommended because those should be limited to decorative images
+#'   (the default is "Plot object").
 #' @param ... Arguments to be passed through to [grDevices::png()].
 #'   These can be used to set the width, height, background color, etc.
 #' @param env The environment in which to evaluate `expr`.
@@ -51,9 +57,10 @@
 #'   call to [plotOutput()] when `renderPlot` is used in an
 #'   interactive R Markdown document.
 #' @export
-renderPlot <- function(expr, width='auto', height='auto', res=72, ...,
-                       env=parent.frame(), quoted=FALSE,
-                       execOnResize=FALSE, outputArgs=list()
+renderPlot <- function(expr, width = 'auto', height = 'auto', res = 72, ...,
+                       alt = "Plot object",
+                       env = parent.frame(), quoted = FALSE,
+                       execOnResize = FALSE, outputArgs = list()
 ) {
   # This ..stacktraceon is matched by a ..stacktraceoff.. when plotFunc
   # is called
@@ -75,6 +82,13 @@ renderPlot <- function(expr, width='auto', height='auto', res=72, ...,
   else
     heightWrapper <- function() { height }
 
+  if (is.reactive(alt))
+    altWrapper <- alt
+  else if (is.function(alt))
+    altWrapper <- reactive({ alt() })
+  else
+    altWrapper <- function() { alt }
+
   getDims <- function() {
     width <- widthWrapper()
     height <- heightWrapper()
@@ -112,6 +126,7 @@ renderPlot <- function(expr, width='auto', height='auto', res=72, ...,
             func = func,
             width = dims$width,
             height = dims$height,
+            alt = altWrapper(),
             pixelratio = pixelratio,
             res = res
           ), args))
@@ -140,7 +155,7 @@ renderPlot <- function(expr, width='auto', height='auto', res=72, ...,
         dims <- getDims()
         pixelratio <- session$clientData$pixelratio %OR% 1
         result <- do.call("resizeSavedPlot", c(
-          list(name, shinysession, result, dims$width, dims$height, pixelratio, res),
+          list(name, shinysession, result, dims$width, dims$height, altWrapper(), pixelratio, res),
           args
         ))
 
@@ -159,12 +174,17 @@ renderPlot <- function(expr, width='auto', height='auto', res=72, ...,
   markRenderFunction(outputFunc, renderFunc, outputArgs = outputArgs)
 }
 
-resizeSavedPlot <- function(name, session, result, width, height, pixelratio, res, ...) {
+resizeSavedPlot <- function(name, session, result, width, height, alt, pixelratio, res, ...) {
   if (result$img$width == width && result$img$height == height &&
       result$pixelratio == pixelratio && result$res == res) {
     return(result)
   }
 
+  if (isNamespaceLoaded("showtext")) {
+    showtextOpts <- showtext::showtext_opts(dpi = res*pixelratio)
+    on.exit({showtext::showtext_opts(showtextOpts)}, add = TRUE)
+  }
+
   coordmap <- NULL
   outfile <- plotPNG(function() {
     grDevices::replayPlot(result$recordedPlot)
@@ -176,6 +196,7 @@ resizeSavedPlot <- function(name, session, result, width, height, pixelratio, re
     src = session$fileUrl(name, outfile, contentType = "image/png"),
     width = width,
     height = height,
+    alt = alt,
     coordmap = coordmap,
     error = attr(coordmap, "error", exact = TRUE)
   )
@@ -183,7 +204,7 @@ resizeSavedPlot <- function(name, session, result, width, height, pixelratio, re
   result
 }
 
-drawPlot <- function(name, session, func, width, height, pixelratio, res, ...) {
+drawPlot <- function(name, session, func, width, height, alt, pixelratio, res, ...) {
   #  1. Start PNG
   #  2. Enable displaylist recording
   #  3. Call user-defined func
@@ -200,6 +221,17 @@ drawPlot <- function(name, session, func, width, height, pixelratio, res, ...) {
   domain <- createGraphicsDevicePromiseDomain(device)
   grDevices::dev.control(displaylist = "enable")
 
+  # In some cases (at least when `png(type='cairo')), showtext's font
+  # rendering needs to know about the device's resolution to work properly.
+  # I don't see any immediate harm in setting the dpi option for any device,
+  # but it's worth noting that the option doesn't currently work with CairoPNG.
+  # https://github.com/yixuan/showtext/issues/33
+  showtextOpts <- if (isNamespaceLoaded("showtext")) {
+    showtext::showtext_opts(dpi = res*pixelratio)
+  } else {
+    NULL
+  }
+
   hybrid_chain(
     hybrid_chain(
       promises::with_promise_domain(domain, {
@@ -246,6 +278,9 @@ drawPlot <- function(name, session, func, width, height, pixelratio, res, ...) {
       }),
       finally = function() {
         grDevices::dev.off(device)
+        if (length(showtextOpts)) {
+          showtext::showtext_opts(showtextOpts)
+        }
       }
     ),
     function(result) {
@@ -253,6 +288,7 @@ drawPlot <- function(name, session, func, width, height, pixelratio, res, ...) {
         src = session$fileUrl(name, outfile, contentType='image/png'),
         width = width,
         height = height,
+        alt = alt,
         coordmap = result$coordmap,
         # Get coordmap error message if present
         error = attr(result$coordmap, "error", exact = TRUE)
@@ -889,6 +925,14 @@ find_panel_info_non_api <- function(b, ggplot_format) {
   })
 }
 
+# Use public API for getting the unit's type (grid::unitType(), added in R 4.0)
+# https://github.com/wch/r-source/blob/f9b8a42/src/library/grid/R/unit.R#L179
+getUnitType <- function(u) {
+  tryCatch(
+    get("unitType", envir = asNamespace("grid"))(u),
+    error = function(e) attr(u, "unit", exact = TRUE)
+  )
+}
 
 # Given a gtable object, return the x and y ranges (in pixel dimensions)
 find_panel_ranges <- function(g, res) {
@@ -904,11 +948,11 @@ find_panel_ranges <- function(g, res) {
     if (inherits(x, "unit.list")) {
       # For ggplot2 <= 1.0.1
       vapply(x, FUN.VALUE = logical(1), function(u) {
-        isTRUE(attr(u, "unit", exact = TRUE) == "null")
+        isTRUE(getUnitType(u) == "null")
       })
     } else {
       # For later versions of ggplot2
-      attr(x, "unit", exact = TRUE) == "null"
+      getUnitType(x) == "null"
     }
   }
 
@@ -948,7 +992,11 @@ find_panel_ranges <- function(g, res) {
 
     # The plotting panels all are 'null' units.
     null_sizes <- rep(NA_real_, length(rel_sizes))
-    null_sizes[null_idx] <- as.numeric(rel_sizes[null_idx])
+    # Workaround for `[.unit` forbidding zero-length subsets
+    # https://github.com/wch/r-source/blob/f9b8a42/src/library/grid/R/unit.R#L448-L450
+    if (length(null_idx)) {
+      null_sizes[null_idx] <- as.numeric(rel_sizes[null_idx])
+    }
 
     # Total size allocated for panels is the total image size minus absolute
     # (non-panel) elements.

R/runapp.R

@@ -0,0 +1,564 @@
+#' Run Shiny Application
+#'
+#' Runs a Shiny application. This function normally does not return; interrupt R
+#' to stop the application (usually by pressing Ctrl+C or Esc).
+#'
+#' The host parameter was introduced in Shiny 0.9.0. Its default value of
+#' `"127.0.0.1"` means that, contrary to previous versions of Shiny, only
+#' the current machine can access locally hosted Shiny apps. To allow other
+#' clients to connect, use the value `"0.0.0.0"` instead (which was the
+#' value that was hard-coded into Shiny in 0.8.0 and earlier).
+#'
+#' @param appDir The application to run. Should be one of the following:
+#'   \itemize{
+#'   \item A directory containing `server.R`, plus, either `ui.R` or
+#'    a `www` directory that contains the file `index.html`.
+#'   \item A directory containing `app.R`.
+#'   \item An `.R` file containing a Shiny application, ending with an
+#'    expression that produces a Shiny app object.
+#'   \item A list with `ui` and `server` components.
+#'   \item A Shiny app object created by [shinyApp()].
+#'   }
+#' @param port The TCP port that the application should listen on. If the
+#'   `port` is not specified, and the `shiny.port` option is set (with
+#'   `options(shiny.port = XX)`), then that port will be used. Otherwise,
+#'   use a random port.
+#' @param launch.browser If true, the system's default web browser will be
+#'   launched automatically after the app is started. Defaults to true in
+#'   interactive sessions only. This value of this parameter can also be a
+#'   function to call with the application's URL.
+#' @param host The IPv4 address that the application should listen on. Defaults
+#'   to the `shiny.host` option, if set, or `"127.0.0.1"` if not. See
+#'   Details.
+#' @param workerId Can generally be ignored. Exists to help some editions of
+#'   Shiny Server Pro route requests to the correct process.
+#' @param quiet Should Shiny status messages be shown? Defaults to FALSE.
+#' @param display.mode The mode in which to display the application. If set to
+#'   the value `"showcase"`, shows application code and metadata from a
+#'   `DESCRIPTION` file in the application directory alongside the
+#'   application. If set to `"normal"`, displays the application normally.
+#'   Defaults to `"auto"`, which displays the application in the mode given
+#'   in its `DESCRIPTION` file, if any.
+#' @param test.mode Should the application be launched in test mode? This is
+#'   only used for recording or running automated tests. Defaults to the
+#'   `shiny.testmode` option, or FALSE if the option is not set.
+#'
+#' @examples
+#' \dontrun{
+#' # Start app in the current working directory
+#' runApp()
+#'
+#' # Start app in a subdirectory called myapp
+#' runApp("myapp")
+#' }
+#'
+#' ## Only run this example in interactive R sessions
+#' if (interactive()) {
+#'   options(device.ask.default = FALSE)
+#'
+#'   # Apps can be run without a server.r and ui.r file
+#'   runApp(list(
+#'     ui = bootstrapPage(
+#'       numericInput('n', 'Number of obs', 100),
+#'       plotOutput('plot')
+#'     ),
+#'     server = function(input, output) {
+#'       output$plot <- renderPlot({ hist(runif(input$n)) })
+#'     }
+#'   ))
+#'
+#'
+#'   # Running a Shiny app object
+#'   app <- shinyApp(
+#'     ui = bootstrapPage(
+#'       numericInput('n', 'Number of obs', 100),
+#'       plotOutput('plot')
+#'     ),
+#'     server = function(input, output) {
+#'       output$plot <- renderPlot({ hist(runif(input$n)) })
+#'     }
+#'   )
+#'   runApp(app)
+#' }
+#' @export
+runApp <- function(appDir=getwd(),
+                   port=getOption('shiny.port'),
+                   launch.browser=getOption('shiny.launch.browser',
+                                            interactive()),
+                   host=getOption('shiny.host', '127.0.0.1'),
+                   workerId="", quiet=FALSE,
+                   display.mode=c("auto", "normal", "showcase"),
+                   test.mode=getOption('shiny.testmode', FALSE)) {
+  on.exit({
+    handlerManager$clear()
+  }, add = TRUE)
+
+  if (isRunning()) {
+    stop("Can't call `runApp()` from within `runApp()`. If your ",
+         "application code contains `runApp()`, please remove it.")
+  }
+
+  # Make warnings print immediately
+  # Set pool.scheduler to support pool package
+  ops <- options(
+    # Raise warn level to 1, but don't lower it
+    warn = max(1, getOption("warn", default = 1)),
+    pool.scheduler = scheduleTask
+  )
+  on.exit(options(ops), add = TRUE)
+
+  # ============================================================================
+  # Global onStart/onStop callbacks
+  # ============================================================================
+  # Invoke user-defined onStop callbacks, before the application's internal
+  # onStop callbacks.
+  on.exit({
+    .globals$onStopCallbacks$invoke()
+    .globals$onStopCallbacks <- Callbacks$new()
+  }, add = TRUE)
+
+  require(shiny)
+
+  # ============================================================================
+  # Convert to Shiny app object
+  # ============================================================================
+  appParts <- as.shiny.appobj(appDir)
+
+  # ============================================================================
+  # Initialize app state object
+  # ============================================================================
+  # This is so calls to getCurrentAppState() can be used to find (A) whether an
+  # app is running and (B), get options and data associated with the app.
+  initCurrentAppState(appParts)
+  on.exit(clearCurrentAppState(), add = TRUE)
+  # Any shinyOptions set after this point will apply to the current app only
+  # (and will not persist after the app stops).
+
+  # ============================================================================
+  # shinyOptions
+  # ============================================================================
+  # A unique identifier associated with this run of this application. It is
+  # shared across sessions.
+  shinyOptions(appToken = createUniqueId(8))
+
+  # Set up default cache for app.
+  if (is.null(getShinyOption("cache"))) {
+    shinyOptions(cache = MemoryCache$new())
+  }
+
+  # Extract appOptions (which is a list) and store them as shinyOptions, for
+  # this app. (This is the only place we have to store settings that are
+  # accessible both the UI and server portion of the app.)
+  applyCapturedAppOptions(appParts$appOptions)
+
+  # ============================================================================
+  # runApp options set via shinyApp(options = list(...))
+  # ============================================================================
+  # The lines below set some of the app's running options, which
+  # can be:
+  #   - left unspecified (in which case the arguments' default
+  #     values from `runApp` kick in);
+  #   - passed through `shinyApp`
+  #   - passed through `runApp` (this function)
+  #   - passed through both `shinyApp` and `runApp` (the latter
+  #     takes precedence)
+  #
+  # Matrix of possibilities:
+  # | IN shinyApp | IN runApp | result       | check                                                                                                                                  |
+  # |-------------|-----------|--------------|----------------------------------------------------------------------------------------------------------------------------------------|
+  # | no          | no        | use defaults | exhaust all possibilities: if it's missing (runApp does not specify); THEN if it's not in shinyApp appParts$options; THEN use defaults |
+  # | yes         | no        | use shinyApp | if it's missing (runApp does not specify); THEN if it's in shinyApp appParts$options; THEN use shinyApp                                |
+  # | no          | yes       | use runApp   | if it's not missing (runApp specifies), use those                                                                                      |
+  # | yes         | yes       | use runApp   | if it's not missing (runApp specifies), use those                                                                                      |
+  #
+  # I tried to make this as compact and intuitive as possible,
+  # given that there are four distinct possibilities to check
+  appOps <- appParts$options
+  findVal <- function(arg, default) {
+    if (arg %in% names(appOps)) appOps[[arg]] else default
+  }
+
+  if (missing(port))
+    port <- findVal("port", port)
+  if (missing(launch.browser))
+    launch.browser <- findVal("launch.browser", launch.browser)
+  if (missing(host))
+    host <- findVal("host", host)
+  if (missing(quiet))
+    quiet <- findVal("quiet", quiet)
+  if (missing(display.mode))
+    display.mode <- findVal("display.mode", display.mode)
+  if (missing(test.mode))
+    test.mode <- findVal("test.mode", test.mode)
+
+  if (is.null(host) || is.na(host)) host <- '0.0.0.0'
+
+  # ============================================================================
+  # Hosted environment
+  # ============================================================================
+  workerId(workerId)
+
+  if (inShinyServer()) {
+    # If SHINY_PORT is set, we're running under Shiny Server. Check the version
+    # to make sure it is compatible. Older versions of Shiny Server don't set
+    # SHINY_SERVER_VERSION, those will return "" which is considered less than
+    # any valid version.
+    ver <- Sys.getenv('SHINY_SERVER_VERSION')
+    if (utils::compareVersion(ver, .shinyServerMinVersion) < 0) {
+      warning('Shiny Server v', .shinyServerMinVersion,
+              ' or later is required; please upgrade!')
+    }
+  }
+
+  # ============================================================================
+  # Shinytest
+  # ============================================================================
+  # Set the testmode shinyoption so that this can be read by both the
+  # ShinySession and the UI code (which executes separately from the
+  # ShinySession code).
+  shinyOptions(testmode = test.mode)
+  if (test.mode) {
+    message("Running application in test mode.")
+  }
+
+  # ============================================================================
+  # Showcase mode
+  # ============================================================================
+  # Showcase mode is disabled by default; it must be explicitly enabled in
+  # either the DESCRIPTION file for directory-based apps, or via
+  # the display.mode parameter. The latter takes precedence.
+  setShowcaseDefault(0)
+
+  # If appDir specifies a path, and display mode is specified in the
+  # DESCRIPTION file at that path, apply it here.
+  if (is.character(appDir)) {
+    # if appDir specifies a .R file (single-file Shiny app), look for the
+    # DESCRIPTION in the parent directory
+    desc <- file.path.ci(
+      if (tolower(tools::file_ext(appDir)) == "r")
+        dirname(appDir)
+      else
+        appDir, "DESCRIPTION")
+    if (file.exists(desc)) {
+      con <- file(desc, encoding = checkEncoding(desc))
+      on.exit(close(con), add = TRUE)
+      settings <- read.dcf(con)
+      if ("DisplayMode" %in% colnames(settings)) {
+        mode <- settings[1, "DisplayMode"]
+        if (mode == "Showcase") {
+          setShowcaseDefault(1)
+          if ("IncludeWWW" %in% colnames(settings)) {
+            .globals$IncludeWWW <- as.logical(settings[1, "IncludeWWW"])
+            if (is.na(.globals$IncludeWWW)) {
+              stop("In your Description file, `IncludeWWW` ",
+                   "must be set to `True` (default) or `False`")
+            }
+          } else {
+            .globals$IncludeWWW <- TRUE
+          }
+        }
+      }
+    }
+  }
+
+  ## default is to show the .js, .css and .html files in the www directory
+  ## (if not in showcase mode, this variable will simply be ignored)
+  if (is.null(.globals$IncludeWWW) || is.na(.globals$IncludeWWW)) {
+    .globals$IncludeWWW <- TRUE
+  }
+
+  # If display mode is specified as an argument, apply it (overriding the
+  # value specified in DESCRIPTION, if any).
+  display.mode <- match.arg(display.mode)
+  if (display.mode == "normal") {
+    setShowcaseDefault(0)
+  }
+  else if (display.mode == "showcase") {
+    setShowcaseDefault(1)
+  }
+
+  # ============================================================================
+  # Server port
+  # ============================================================================
+  # determine port if we need to
+  if (is.null(port)) {
+
+    # Try up to 20 random ports. If we don't succeed just plow ahead
+    # with the final value we tried, and let the "real" startServer
+    # somewhere down the line fail and throw the error to the user.
+    #
+    # If we (think we) succeed, save the value as .globals$lastPort,
+    # and try that first next time the user wants a random port.
+
+    for (i in 1:20) {
+      if (!is.null(.globals$lastPort)) {
+        port <- .globals$lastPort
+        .globals$lastPort <- NULL
+      }
+      else {
+        # Try up to 20 random ports
+        while (TRUE) {
+          port <- p_randomInt(3000, 8000)
+          # Reject ports in this range that are considered unsafe by Chrome
+          # http://superuser.com/questions/188058/which-ports-are-considered-unsafe-on-chrome
+          # https://github.com/rstudio/shiny/issues/1784
+          if (!port %in% c(3659, 4045, 6000, 6665:6669, 6697)) {
+            break
+          }
+        }
+      }
+
+      # Test port to see if we can use it
+      tmp <- try(startServer(host, port, list()), silent=TRUE)
+      if (!inherits(tmp, 'try-error')) {
+        stopServer(tmp)
+        .globals$lastPort <- port
+        break
+      }
+    }
+  }
+
+  # ============================================================================
+  # onStart/onStop callbacks
+  # ============================================================================
+  # Set up the onStop before we call onStart, so that it gets called even if an
+  # error happens in onStart.
+  if (!is.null(appParts$onStop))
+    on.exit(appParts$onStop(), add = TRUE)
+  if (!is.null(appParts$onStart))
+    appParts$onStart()
+
+  # ============================================================================
+  # Start/stop httpuv app
+  # ============================================================================
+  server <- startApp(appParts, port, host, quiet)
+
+  # Make the httpuv server object accessible. Needed for calling
+  # addResourcePath while app is running.
+  shinyOptions(server = server)
+
+  on.exit({
+    stopServer(server)
+  }, add = TRUE)
+
+  # ============================================================================
+  # Launch web browser
+  # ============================================================================
+  if (!is.character(port)) {
+    browseHost <- host
+    if (identical(host, "0.0.0.0")) {
+      # http://0.0.0.0/ doesn't work on QtWebKit (i.e. RStudio viewer)
+      browseHost <- "127.0.0.1"
+    } else if (identical(host, "::")) {
+      browseHost <- "::1"
+    }
+
+    if (httpuv::ipFamily(browseHost) == 6L) {
+      browseHost <- paste0("[", browseHost, "]")
+    }
+
+    appUrl <- paste("http://", browseHost, ":", port, sep="")
+    if (is.function(launch.browser))
+      launch.browser(appUrl)
+    else if (launch.browser)
+      utils::browseURL(appUrl)
+  } else {
+    appUrl <- NULL
+  }
+
+  # ============================================================================
+  # Application hooks
+  # ============================================================================
+  callAppHook("onAppStart", appUrl)
+  on.exit({
+    callAppHook("onAppStop", appUrl)
+  }, add = TRUE)
+
+  # ============================================================================
+  # Run event loop via httpuv
+  # ============================================================================
+  .globals$reterror <- NULL
+  .globals$retval <- NULL
+  .globals$stopped <- FALSE
+  # Top-level ..stacktraceoff..; matches with ..stacktraceon in observe(),
+  # reactive(), Callbacks$invoke(), and others
+  ..stacktraceoff..(
+    captureStackTraces({
+      while (!.globals$stopped) {
+        ..stacktracefloor..(serviceApp())
+      }
+    })
+  )
+
+  if (isTRUE(.globals$reterror)) {
+    stop(.globals$retval)
+  }
+  else if (.globals$retval$visible)
+    .globals$retval$value
+  else
+    invisible(.globals$retval$value)
+}
+
+#' Stop the currently running Shiny app
+#'
+#' Stops the currently running Shiny app, returning control to the caller of
+#' [runApp()].
+#'
+#' @param returnValue The value that should be returned from
+#'   [runApp()].
+#' @export
+stopApp <- function(returnValue = invisible()) {
+  # reterror will indicate whether retval is an error (i.e. it should be passed
+  # to stop() when the serviceApp loop stops) or a regular value (in which case
+  # it should simply be returned with the appropriate visibility).
+  .globals$reterror <- FALSE
+  ..stacktraceoff..(
+    tryCatch(
+      {
+        captureStackTraces(
+          .globals$retval <- withVisible(..stacktraceon..(force(returnValue)))
+        )
+      },
+      error = function(e) {
+        .globals$retval <- e
+        .globals$reterror <- TRUE
+      }
+    )
+  )
+
+  .globals$stopped <- TRUE
+  httpuv::interrupt()
+}
+
+#' Run Shiny Example Applications
+#'
+#' Launch Shiny example applications, and optionally, your system's web browser.
+#'
+#' @param example The name of the example to run, or `NA` (the default) to
+#'   list the available examples.
+#' @param launch.browser If true, the system's default web browser will be
+#'   launched automatically after the app is started. Defaults to true in
+#'   interactive sessions only.
+#' @param host The IPv4 address that the application should listen on. Defaults
+#'   to the `shiny.host` option, if set, or `"127.0.0.1"` if not.
+#' @param display.mode The mode in which to display the example. Defaults to
+#'   `showcase`, but may be set to `normal` to see the example without
+#'   code or commentary.
+#' @inheritParams runApp
+#'
+#' @examples
+#' ## Only run this example in interactive R sessions
+#' if (interactive()) {
+#'   # List all available examples
+#'   runExample()
+#'
+#'   # Run one of the examples
+#'   runExample("01_hello")
+#'
+#'   # Print the directory containing the code for all examples
+#'   system.file("examples", package="shiny")
+#' }
+#' @export
+runExample <- function(example=NA,
+                       port=getOption("shiny.port"),
+                       launch.browser=getOption('shiny.launch.browser',
+                                                interactive()),
+                       host=getOption('shiny.host', '127.0.0.1'),
+                       display.mode=c("auto", "normal", "showcase")) {
+  examplesDir <- system.file('examples', package='shiny')
+  dir <- resolve(examplesDir, example)
+  if (is.null(dir)) {
+    if (is.na(example)) {
+      errFun <- message
+      errMsg <- ''
+    }
+    else {
+      errFun <- stop
+      errMsg <- paste('Example', example, 'does not exist. ')
+    }
+
+    errFun(errMsg,
+           'Valid examples are "',
+           paste(list.files(examplesDir), collapse='", "'),
+           '"')
+  }
+  else {
+    runApp(dir, port = port, host = host, launch.browser = launch.browser,
+           display.mode = display.mode)
+  }
+}
+
+#' Run a gadget
+#'
+#' Similar to `runApp`, but handles `input$cancel` automatically, and
+#' if running in RStudio, defaults to viewing the app in the Viewer pane.
+#'
+#' @param app Either a Shiny app object as created by
+#'   [`shinyApp()`][shiny] et al, or, a UI object.
+#' @param server Ignored if `app` is a Shiny app object; otherwise, passed
+#'   along to `shinyApp` (i.e. `shinyApp(ui = app, server = server)`).
+#' @param port See [`runApp()`][shiny].
+#' @param viewer Specify where the gadget should be displayed--viewer pane,
+#'   dialog window, or external browser--by passing in a call to one of the
+#'   [viewer()] functions.
+#' @param stopOnCancel If `TRUE` (the default), then an `observeEvent`
+#'   is automatically created that handles `input$cancel` by calling
+#'   `stopApp()` with an error. Pass `FALSE` if you want to handle
+#'   `input$cancel` yourself.
+#' @return The value returned by the gadget.
+#'
+#' @examples
+#' \dontrun{
+#' library(shiny)
+#'
+#' ui <- fillPage(...)
+#'
+#' server <- function(input, output, session) {
+#'   ...
+#' }
+#'
+#' # Either pass ui/server as separate arguments...
+#' runGadget(ui, server)
+#'
+#' # ...or as a single app object
+#' runGadget(shinyApp(ui, server))
+#' }
+#' @export
+runGadget <- function(app, server = NULL, port = getOption("shiny.port"),
+  viewer = paneViewer(), stopOnCancel = TRUE) {
+
+  if (!is.shiny.appobj(app)) {
+    app <- shinyApp(app, server)
+  }
+
+  if (isTRUE(stopOnCancel)) {
+    app <- decorateServerFunc(app, function(input, output, session) {
+      observeEvent(input$cancel, {
+        stopApp(stop("User cancel", call. = FALSE))
+      })
+    })
+  }
+
+  if (is.null(viewer)) {
+    viewer <- utils::browseURL
+  }
+
+  shiny::runApp(app, port = port, launch.browser = viewer)
+}
+
+# Add custom functionality to a Shiny app object's server func
+decorateServerFunc <- function(appobj, serverFunc) {
+  origServerFuncSource <- appobj$serverFuncSource
+  appobj$serverFuncSource <- function() {
+    origServerFunc <- origServerFuncSource()
+    function(input, output, session) {
+      serverFunc(input, output, session)
+
+      # The clientData and session arguments are optional; check if
+      # each exists
+      args <- argsForServerFunc(origServerFunc, session)
+      do.call(origServerFunc, args)
+    }
+  }
+  appobj
+}

R/server-input-handlers.R

@@ -5,14 +5,15 @@ inputHandlers <- Map$new()
 #'
 #' Adds an input handler for data of this type. When called, Shiny will use the
 #' function provided to refine the data passed back from the client (after being
-#' deserialized by jsonlite) before making it available in the `input`
-#' variable of the `server.R` file.
+#' deserialized by jsonlite) before making it available in the `input` variable
+#' of the `server.R` file.
 #'
 #' This function will register the handler for the duration of the R process
 #' (unless Shiny is explicitly reloaded). For that reason, the `type` used
 #' should be very specific to this package to minimize the risk of colliding
 #' with another Shiny package which might use this data type name. We recommend
-#' the format of "packageName.widgetName".
+#' the format of "packageName.widgetName". It should be called from the
+#' package's `.onLoad()` function.
 #'
 #' Currently Shiny registers the following handlers: `shiny.matrix`,
 #' `shiny.number`, and `shiny.date`.
@@ -20,23 +21,20 @@ inputHandlers <- Map$new()
 #' The `type` of a custom Shiny Input widget will be deduced using the
 #' `getType()` JavaScript function on the registered Shiny inputBinding.
 #' @param type The type for which the handler should be added --- should be a
-#' single-element character vector.
+#'   single-element character vector.
 #' @param fun The handler function. This is the function that will be used to
 #'   parse the data delivered from the client before it is available in the
 #'   `input` variable. The function will be called with the following three
-#'   parameters:
-#'    \enumerate{
-#'      \item{The value of this input as provided by the client, deserialized
-#'      using jsonlite.}
-#'      \item{The `shinysession` in which the input exists.}
-#'      \item{The name of the input.}
-#'    }
-#' @param force If `TRUE`, will overwrite any existing handler without
-#' warning. If `FALSE`, will throw an error if this class already has
-#' a handler defined.
+#'   parameters: \enumerate{ \item{The value of this input as provided by the
+#'   client, deserialized using jsonlite.} \item{The `shinysession` in which the
+#'   input exists.} \item{The name of the input.} }
+#' @param force If `TRUE`, will overwrite any existing handler without warning.
+#'   If `FALSE`, will throw an error if this class already has a handler
+#'   defined.
 #' @examples
 #' \dontrun{
 #' # Register an input handler which rounds a input number to the nearest integer
+#' # In a package, this should be called from the .onLoad function.
 #' registerInputHandler("mypackage.validint", function(x, shinysession, name) {
 #'   if (is.null(x)) return(NA)
 #'   round(x)

R/server-resource-paths.R

@@ -0,0 +1,169 @@
+.globals$resourcePaths <- list()
+.globals$resources <- list()
+
+#' Resource Publishing
+#'
+#' Add, remove, or list directory of static resources to Shiny's web server,
+#' with the given path prefix. Primarily intended for package authors to make
+#' supporting JavaScript/CSS files available to their components.
+#'
+#' Shiny provides two ways of serving static files (i.e., resources):
+#'
+#' 1. Static files under the `www/` directory are automatically made available
+#' under a request path that begins with `/`.
+#' 2. `addResourcePath()` makes static files in a `directoryPath` available
+#' under a request path that begins with `prefix`.
+#'
+#' The second approach is primarily intended for package authors to make
+#' supporting JavaScript/CSS files available to their components.
+#'
+#' Tools for managing static resources published by Shiny's web server:
+#'  * `addResourcePath()` adds a directory of static resources.
+#'  * `resourcePaths()` lists the currently active resource mappings.
+#'  * `removeResourcePath()` removes a directory of static resources.
+#'
+#' @param prefix The URL prefix (without slashes). Valid characters are a-z,
+#'   A-Z, 0-9, hyphen, period, and underscore. For example, a value of 'foo'
+#'   means that any request paths that begin with '/foo' will be mapped to the
+#'   given directory.
+#' @param directoryPath The directory that contains the static resources to be
+#'   served.
+#'
+#' @rdname resourcePaths
+#' @seealso [singleton()]
+#'
+#' @examples
+#' addResourcePath('datasets', system.file('data', package='datasets'))
+#' resourcePaths()
+#' removeResourcePath('datasets')
+#' resourcePaths()
+#'
+#' # make sure all resources are removed
+#' lapply(names(resourcePaths()), removeResourcePath)
+#' @export
+addResourcePath <- function(prefix, directoryPath) {
+  if (length(prefix) != 1) stop("prefix must be of length 1")
+  if (grepl("^\\.+$", prefix)) stop("prefix can't be composed of dots only")
+  if (!grepl('[a-z0-9\\-_.]+$', prefix, ignore.case = TRUE, perl = TRUE)) {
+    stop("addResourcePath called with invalid prefix; please see documentation")
+  }
+  if (prefix %in% c('shared')) {
+    stop("addResourcePath called with the reserved prefix '", prefix, "'; ",
+         "please use a different prefix")
+  }
+  normalizedPath <- tryCatch(normalizePath(directoryPath, mustWork = TRUE),
+    error = function(e) {
+      stop("Couldn't normalize path in `addResourcePath`, with arguments: ",
+        "`prefix` = '", prefix, "'; `directoryPath` = '" , directoryPath, "'")
+    }
+  )
+
+  # # Often times overwriting a resource path is "what you want",
+  # # but sometimes it can lead to difficult to diagnose issues
+  # # (e.g. an implict dependency might set a resource path that
+  # # conflicts with what you, the app author, are trying to register)
+  # # Note that previous versions of shiny used to warn about this case,
+  # # but it was eventually removed since it caused confusion (#567).
+  # # It seems a good compromise is to throw a more information message.
+  # if (getOption("shiny.resourcePathChanges", FALSE) &&
+  #     prefix %in% names(.globals$resourcePaths)) {
+  #   existingPath <- .globals$resourcePaths[[prefix]]$path
+  #   if (normalizedPath != existingPath) {
+  #     message(
+  #       "The resource path '", prefix, "' used to point to ",
+  #       existingPath, ", but it now points to ", normalizedPath, ". ",
+  #       "If your app doesn't work as expected, you may want to ",
+  #       "choose a different prefix name."
+  #     )
+  #   }
+  # }
+
+  # If a shiny app is currently running, dynamically register this path with
+  # the corresponding httpuv server object.
+  if (!is.null(getShinyOption("server")))
+  {
+    getShinyOption("server")$setStaticPath(.list = stats::setNames(normalizedPath, prefix))
+  }
+
+  # .globals$resourcePaths and .globals$resources persist across runs of applications.
+  .globals$resourcePaths[[prefix]] <- staticPath(normalizedPath)
+  # This is necessary because resourcePaths is only for serving assets out of C++;
+  # to support subapps, we also need assets to be served out of R, because those
+  # URLs are rewritten by R code (i.e. routeHandler) before they can be matched to
+  # a resource path.
+  .globals$resources[[prefix]] <- list(
+    directoryPath = normalizedPath,
+    func = staticHandler(normalizedPath)
+  )
+}
+
+#' @rdname resourcePaths
+#' @export
+resourcePaths <- function() {
+  urls <- names(.globals$resourcePaths)
+  paths <- vapply(.globals$resourcePaths, function(x) x$path, character(1))
+  stats::setNames(paths, urls)
+}
+
+hasResourcePath <- function(prefix) {
+  prefix %in% names(resourcePaths())
+}
+
+#' @rdname resourcePaths
+#' @export
+removeResourcePath <- function(prefix) {
+  if (length(prefix) > 1) stop("`prefix` must be of length 1.")
+  if (!hasResourcePath(prefix)) {
+    warning("Resource ", prefix, " not found.")
+    return(invisible(FALSE))
+  }
+  .globals$resourcePaths[[prefix]] <- NULL
+  .globals$resources[[prefix]] <- NULL
+  invisible(TRUE)
+}
+
+# This function handles any GET request with two or more path elements where the
+# first path element matches a prefix that was previously added using
+# addResourcePath().
+#
+# For example, if `addResourcePath("foo", "~/bar")` was called, then a GET
+# request for /foo/one/two.html would rewrite the PATH_INFO as /one/two.html and
+# send it to the resource path function for "foo". As of this writing, that
+# function will always be a staticHandler, which serves up a file if it exists
+# and NULL if it does not.
+#
+# Since Shiny 1.3.x, assets registered via addResourcePath should mostly be
+# served out of httpuv's native static file serving features. However, in the
+# specific case of subapps, the R code path must be used, because subapps insert
+# a giant random ID into the beginning of the URL that must be stripped off by
+# an R route handler (see addSubApp()).
+resourcePathHandler <- function(req) {
+  if (!identical(req$REQUEST_METHOD, 'GET'))
+    return(NULL)
+
+  # e.g. "/foo/one/two.html"
+  path <- req$PATH_INFO
+
+  match <- regexpr('^/([^/]+)/', path, perl=TRUE)
+  if (match == -1)
+    return(NULL)
+  len <- attr(match, 'capture.length')
+  # e.g. "foo"
+  prefix <- substr(path, 2, 2 + len - 1)
+
+  resInfo <- .globals$resources[[prefix]]
+  if (is.null(resInfo))
+    return(NULL)
+
+  # e.g. "/one/two.html"
+  suffix <- substr(path, 2 + len, nchar(path))
+
+  # Create a new request that's a clone of the current request, but adjust
+  # PATH_INFO and SCRIPT_NAME to reflect that we have already matched the first
+  # path element (e.g. "/foo"). See routeHandler() for more info.
+  subreq <- as.environment(as.list(req, all.names=TRUE))
+  subreq$PATH_INFO <- suffix
+  subreq$SCRIPT_NAME <- paste(subreq$SCRIPT_NAME, substr(path, 1, 2 + len), sep='')
+
+  return(resInfo$func(subreq))
+}

R/server.R

@@ -22,180 +22,10 @@ registerClient <- function(client) {
 }
 
 
-.globals$resourcePaths <- list()
-.globals$resources <- list()
-
 .globals$showcaseDefault <- 0
 
 .globals$showcaseOverride <- FALSE
 
-#' Resource Publishing
-#'
-#' Add, remove, or list directory of static resources to Shiny's web server,
-#' with the given path prefix. Primarily intended for package authors to make
-#' supporting JavaScript/CSS files available to their components.
-#'
-#' Shiny provides two ways of serving static files (i.e., resources):
-#'
-#' 1. Static files under the `www/` directory are automatically made available
-#' under a request path that begins with `/`.
-#' 2. `addResourcePath()` makes static files in a `directoryPath` available
-#' under a request path that begins with `prefix`.
-#'
-#' The second approach is primarily intended for package authors to make
-#' supporting JavaScript/CSS files available to their components.
-#'
-#' Tools for managing static resources published by Shiny's web server:
-#'  * `addResourcePath()` adds a directory of static resources.
-#'  * `resourcePaths()` lists the currently active resource mappings.
-#'  * `removeResourcePath()` removes a directory of static resources.
-#'
-#' @param prefix The URL prefix (without slashes). Valid characters are a-z,
-#'   A-Z, 0-9, hyphen, period, and underscore. For example, a value of 'foo'
-#'   means that any request paths that begin with '/foo' will be mapped to the
-#'   given directory.
-#' @param directoryPath The directory that contains the static resources to be
-#'   served.
-#'
-#' @rdname resourcePaths
-#' @seealso [singleton()]
-#'
-#' @examples
-#' addResourcePath('datasets', system.file('data', package='datasets'))
-#' resourcePaths()
-#' removeResourcePath('datasets')
-#' resourcePaths()
-#'
-#' # make sure all resources are removed
-#' lapply(names(resourcePaths()), removeResourcePath)
-#' @export
-addResourcePath <- function(prefix, directoryPath) {
-  if (length(prefix) != 1) stop("prefix must be of length 1")
-  if (!grepl('^[a-z0-9\\-_][a-z0-9\\-_.]*$', prefix, ignore.case = TRUE, perl = TRUE)) {
-    stop("addResourcePath called with invalid prefix; please see documentation")
-  }
-  if (prefix %in% c('shared')) {
-    stop("addResourcePath called with the reserved prefix '", prefix, "'; ",
-         "please use a different prefix")
-  }
-  normalizedPath <- tryCatch(normalizePath(directoryPath, mustWork = TRUE),
-    error = function(e) {
-      stop("Couldn't normalize path in `addResourcePath`, with arguments: ",
-        "`prefix` = '", prefix, "'; `directoryPath` = '" , directoryPath, "'")
-    }
-  )
-
-  # # Often times overwriting a resource path is "what you want",
-  # # but sometimes it can lead to difficult to diagnose issues
-  # # (e.g. an implict dependency might set a resource path that
-  # # conflicts with what you, the app author, are trying to register)
-  # # Note that previous versions of shiny used to warn about this case,
-  # # but it was eventually removed since it caused confusion (#567).
-  # # It seems a good compromise is to throw a more information message.
-  # if (getOption("shiny.resourcePathChanges", FALSE) &&
-  #     prefix %in% names(.globals$resourcePaths)) {
-  #   existingPath <- .globals$resourcePaths[[prefix]]$path
-  #   if (normalizedPath != existingPath) {
-  #     message(
-  #       "The resource path '", prefix, "' used to point to ",
-  #       existingPath, ", but it now points to ", normalizedPath, ". ",
-  #       "If your app doesn't work as expected, you may want to ",
-  #       "choose a different prefix name."
-  #     )
-  #   }
-  # }
-
-  # If a shiny app is currently running, dynamically register this path with
-  # the corresponding httpuv server object.
-  if (!is.null(getShinyOption("server")))
-  {
-    getShinyOption("server")$setStaticPath(.list = stats::setNames(normalizedPath, prefix))
-  }
-
-  # .globals$resourcePaths and .globals$resources persist across runs of applications.
-  .globals$resourcePaths[[prefix]] <- staticPath(normalizedPath)
-  # This is necessary because resourcePaths is only for serving assets out of C++;
-  # to support subapps, we also need assets to be served out of R, because those
-  # URLs are rewritten by R code (i.e. routeHandler) before they can be matched to
-  # a resource path.
-  .globals$resources[[prefix]] <- list(
-    directoryPath = normalizedPath,
-    func = staticHandler(normalizedPath)
-  )
-}
-
-#' @rdname resourcePaths
-#' @export
-resourcePaths <- function() {
-  urls <- names(.globals$resourcePaths)
-  paths <- vapply(.globals$resourcePaths, function(x) x$path, character(1))
-  stats::setNames(paths, urls)
-}
-
-hasResourcePath <- function(prefix) {
-  prefix %in% names(resourcePaths())
-}
-
-#' @rdname resourcePaths
-#' @export
-removeResourcePath <- function(prefix) {
-  if (length(prefix) > 1) stop("`prefix` must be of length 1.")
-  if (!hasResourcePath(prefix)) {
-    warning("Resource ", prefix, " not found.")
-    return(invisible(FALSE))
-  }
-  .globals$resourcePaths[[prefix]] <- NULL
-  .globals$resources[[prefix]] <- NULL
-  invisible(TRUE)
-}
-
-
-
-# This function handles any GET request with two or more path elements where the
-# first path element matches a prefix that was previously added using
-# addResourcePath().
-#
-# For example, if `addResourcePath("foo", "~/bar")` was called, then a GET
-# request for /foo/one/two.html would rewrite the PATH_INFO as /one/two.html and
-# send it to the resource path function for "foo". As of this writing, that
-# function will always be a staticHandler, which serves up a file if it exists
-# and NULL if it does not.
-#
-# Since Shiny 1.3.x, assets registered via addResourcePath should mostly be
-# served out of httpuv's native static file serving features. However, in the
-# specific case of subapps, the R code path must be used, because subapps insert
-# a giant random ID into the beginning of the URL that must be stripped off by
-# an R route handler (see addSubApp()).
-resourcePathHandler <- function(req) {
-  if (!identical(req$REQUEST_METHOD, 'GET'))
-    return(NULL)
-
-  # e.g. "/foo/one/two.html"
-  path <- req$PATH_INFO
-
-  match <- regexpr('^/([^/]+)/', path, perl=TRUE)
-  if (match == -1)
-    return(NULL)
-  len <- attr(match, 'capture.length')
-  # e.g. "foo"
-  prefix <- substr(path, 2, 2 + len - 1)
-
-  resInfo <- .globals$resources[[prefix]]
-  if (is.null(resInfo))
-    return(NULL)
-
-  # e.g. "/one/two.html"
-  suffix <- substr(path, 2 + len, nchar(path))
-
-  # Create a new request that's a clone of the current request, but adjust
-  # PATH_INFO and SCRIPT_NAME to reflect that we have already matched the first
-  # path element (e.g. "/foo"). See routeHandler() for more info.
-  subreq <- as.environment(as.list(req, all.names=TRUE))
-  subreq$PATH_INFO <- suffix
-  subreq$SCRIPT_NAME <- paste(subreq$SCRIPT_NAME, substr(path, 1, 2 + len), sep='')
-
-  return(resInfo$func(subreq))
-}
 
 #' Define Server Functionality
 #'
@@ -279,6 +109,8 @@ decodeMessage <- function(data) {
   return(mainMessage)
 }
 
+autoReloadCallbacks <- Callbacks$new()
+
 createAppHandlers <- function(httpHandlers, serverFuncSource) {
   appvars <- new.env()
   appvars$server <- NULL
@@ -304,6 +136,22 @@ createAppHandlers <- function(httpHandlers, serverFuncSource) {
         return(TRUE)
       }
 
+      if (identical(ws$request$PATH_INFO, "/autoreload/")) {
+        if (!getOption("shiny.autoreload", FALSE)) {
+          ws$close()
+          return(TRUE)
+        }
+
+        callbackHandle <- autoReloadCallbacks$register(function() {
+          ws$send("autoreload")
+          ws$close()
+        })
+        ws$onClose(function() {
+          callbackHandle()
+        })
+        return(TRUE)
+      }
+
       if (!is.null(getOption("shiny.observer.error", NULL))) {
         warning(
           call. = FALSE,
@@ -626,9 +474,6 @@ serviceApp <- function() {
 
 .shinyServerMinVersion <- '0.3.4'
 
-# Global flag that's TRUE whenever we're inside of the scope of a call to runApp
-.globals$running <- FALSE
-
 #' Check whether a Shiny application is running
 #'
 #' This function tests whether a Shiny application is currently running.
@@ -637,589 +482,9 @@ serviceApp <- function() {
 #'   `FALSE`.
 #' @export
 isRunning <- function() {
-  .globals$running
+  !is.null(getCurrentAppState())
 }
 
-#' Run Shiny Application
-#'
-#' Runs a Shiny application. This function normally does not return; interrupt R
-#' to stop the application (usually by pressing Ctrl+C or Esc).
-#'
-#' The host parameter was introduced in Shiny 0.9.0. Its default value of
-#' `"127.0.0.1"` means that, contrary to previous versions of Shiny, only
-#' the current machine can access locally hosted Shiny apps. To allow other
-#' clients to connect, use the value `"0.0.0.0"` instead (which was the
-#' value that was hard-coded into Shiny in 0.8.0 and earlier).
-#'
-#' @param appDir The application to run. Should be one of the following:
-#'   \itemize{
-#'   \item A directory containing `server.R`, plus, either `ui.R` or
-#'    a `www` directory that contains the file `index.html`.
-#'   \item A directory containing `app.R`.
-#'   \item An `.R` file containing a Shiny application, ending with an
-#'    expression that produces a Shiny app object.
-#'   \item A list with `ui` and `server` components.
-#'   \item A Shiny app object created by [shinyApp()].
-#'   }
-#' @param port The TCP port that the application should listen on. If the
-#'   `port` is not specified, and the `shiny.port` option is set (with
-#'   `options(shiny.port = XX)`), then that port will be used. Otherwise,
-#'   use a random port.
-#' @param launch.browser If true, the system's default web browser will be
-#'   launched automatically after the app is started. Defaults to true in
-#'   interactive sessions only. This value of this parameter can also be a
-#'   function to call with the application's URL.
-#' @param host The IPv4 address that the application should listen on. Defaults
-#'   to the `shiny.host` option, if set, or `"127.0.0.1"` if not. See
-#'   Details.
-#' @param workerId Can generally be ignored. Exists to help some editions of
-#'   Shiny Server Pro route requests to the correct process.
-#' @param quiet Should Shiny status messages be shown? Defaults to FALSE.
-#' @param display.mode The mode in which to display the application. If set to
-#'   the value `"showcase"`, shows application code and metadata from a
-#'   `DESCRIPTION` file in the application directory alongside the
-#'   application. If set to `"normal"`, displays the application normally.
-#'   Defaults to `"auto"`, which displays the application in the mode given
-#'   in its `DESCRIPTION` file, if any.
-#' @param test.mode Should the application be launched in test mode? This is
-#'   only used for recording or running automated tests. Defaults to the
-#'   `shiny.testmode` option, or FALSE if the option is not set.
-#'
-#' @examples
-#' \dontrun{
-#' # Start app in the current working directory
-#' runApp()
-#'
-#' # Start app in a subdirectory called myapp
-#' runApp("myapp")
-#' }
-#'
-#' ## Only run this example in interactive R sessions
-#' if (interactive()) {
-#'   options(device.ask.default = FALSE)
-#'
-#'   # Apps can be run without a server.r and ui.r file
-#'   runApp(list(
-#'     ui = bootstrapPage(
-#'       numericInput('n', 'Number of obs', 100),
-#'       plotOutput('plot')
-#'     ),
-#'     server = function(input, output) {
-#'       output$plot <- renderPlot({ hist(runif(input$n)) })
-#'     }
-#'   ))
-#'
-#'
-#'   # Running a Shiny app object
-#'   app <- shinyApp(
-#'     ui = bootstrapPage(
-#'       numericInput('n', 'Number of obs', 100),
-#'       plotOutput('plot')
-#'     ),
-#'     server = function(input, output) {
-#'       output$plot <- renderPlot({ hist(runif(input$n)) })
-#'     }
-#'   )
-#'   runApp(app)
-#' }
-#' @export
-runApp <- function(appDir=getwd(),
-                   port=getOption('shiny.port'),
-                   launch.browser=getOption('shiny.launch.browser',
-                                            interactive()),
-                   host=getOption('shiny.host', '127.0.0.1'),
-                   workerId="", quiet=FALSE,
-                   display.mode=c("auto", "normal", "showcase"),
-                   test.mode=getOption('shiny.testmode', FALSE)) {
-  on.exit({
-    handlerManager$clear()
-  }, add = TRUE)
-
-  if (.globals$running) {
-    stop("Can't call `runApp()` from within `runApp()`. If your ",
-         "application code contains `runApp()`, please remove it.")
-  }
-  .globals$running <- TRUE
-  on.exit({
-    .globals$running <- FALSE
-  }, add = TRUE)
-
-  # Enable per-app Shiny options, for shinyOptions() and getShinyOption().
-  oldOptionSet <- .globals$options
-  on.exit({
-    .globals$options <- oldOptionSet
-  },add = TRUE)
-
-  # A unique identifier associated with this run of this application. It is
-  # shared across sessions.
-  shinyOptions(appToken = createUniqueId(8))
-
-  # Make warnings print immediately
-  # Set pool.scheduler to support pool package
-  ops <- options(
-    # Raise warn level to 1, but don't lower it
-    warn = max(1, getOption("warn", default = 1)),
-    pool.scheduler = scheduleTask
-  )
-  on.exit(options(ops), add = TRUE)
-
-  # Set up default cache for app.
-  if (is.null(getShinyOption("cache"))) {
-    shinyOptions(cache = MemoryCache$new())
-  }
-
-  appParts <- as.shiny.appobj(appDir)
-
-  # The lines below set some of the app's running options, which
-  # can be:
-  #   - left unspeficied (in which case the arguments' default
-  #     values from `runApp` kick in);
-  #   - passed through `shinyApp`
-  #   - passed through `runApp` (this function)
-  #   - passed through both `shinyApp` and `runApp` (the latter
-  #     takes precedence)
-  #
-  # Matrix of possibilities:
-  # | IN shinyApp | IN runApp | result       | check                                                                                                                                  |
-  # |-------------|-----------|--------------|----------------------------------------------------------------------------------------------------------------------------------------|
-  # | no          | no        | use defaults | exhaust all possibilities: if it's missing (runApp does not specify); THEN if it's not in shinyApp appParts$options; THEN use defaults |
-  # | yes         | no        | use shinyApp | if it's missing (runApp does not specify); THEN if it's in shinyApp appParts$options; THEN use shinyApp                                |
-  # | no          | yes       | use runApp   | if it's not missing (runApp specifies), use those                                                                                      |
-  # | yes         | yes       | use runApp   | if it's not missing (runApp specifies), use those                                                                                      |
-  #
-  # I tried to make this as compact and intuitive as possible,
-  # given that there are four distinct possibilities to check
-  appOps <- appParts$options
-  findVal <- function(arg, default) {
-    if (arg %in% names(appOps)) appOps[[arg]] else default
-  }
-
-  if (missing(port))
-    port <- findVal("port", port)
-  if (missing(launch.browser))
-    launch.browser <- findVal("launch.browser", launch.browser)
-  if (missing(host))
-    host <- findVal("host", host)
-  if (missing(quiet))
-    quiet <- findVal("quiet", quiet)
-  if (missing(display.mode))
-    display.mode <- findVal("display.mode", display.mode)
-  if (missing(test.mode))
-    test.mode <- findVal("test.mode", test.mode)
-
-  if (is.null(host) || is.na(host)) host <- '0.0.0.0'
-
-  workerId(workerId)
-
-  if (inShinyServer()) {
-    # If SHINY_PORT is set, we're running under Shiny Server. Check the version
-    # to make sure it is compatible. Older versions of Shiny Server don't set
-    # SHINY_SERVER_VERSION, those will return "" which is considered less than
-    # any valid version.
-    ver <- Sys.getenv('SHINY_SERVER_VERSION')
-    if (utils::compareVersion(ver, .shinyServerMinVersion) < 0) {
-      warning('Shiny Server v', .shinyServerMinVersion,
-              ' or later is required; please upgrade!')
-    }
-  }
-
-  # Showcase mode is disabled by default; it must be explicitly enabled in
-  # either the DESCRIPTION file for directory-based apps, or via
-  # the display.mode parameter. The latter takes precedence.
-  setShowcaseDefault(0)
-
-  .globals$testMode <- test.mode
-  if (test.mode) {
-    message("Running application in test mode.")
-  }
-
-  # If appDir specifies a path, and display mode is specified in the
-  # DESCRIPTION file at that path, apply it here.
-  if (is.character(appDir)) {
-    # if appDir specifies a .R file (single-file Shiny app), look for the
-    # DESCRIPTION in the parent directory
-    desc <- file.path.ci(
-      if (tolower(tools::file_ext(appDir)) == "r")
-        dirname(appDir)
-      else
-        appDir, "DESCRIPTION")
-    if (file.exists(desc)) {
-      con <- file(desc, encoding = checkEncoding(desc))
-      on.exit(close(con), add = TRUE)
-      settings <- read.dcf(con)
-      if ("DisplayMode" %in% colnames(settings)) {
-        mode <- settings[1, "DisplayMode"]
-        if (mode == "Showcase") {
-          setShowcaseDefault(1)
-          if ("IncludeWWW" %in% colnames(settings)) {
-            .globals$IncludeWWW <- as.logical(settings[1, "IncludeWWW"])
-            if (is.na(.globals$IncludeWWW)) {
-              stop("In your Description file, `IncludeWWW` ",
-                   "must be set to `True` (default) or `False`")
-            }
-          } else {
-            .globals$IncludeWWW <- TRUE
-          }
-        }
-      }
-    }
-  }
-
-  ## default is to show the .js, .css and .html files in the www directory
-  ## (if not in showcase mode, this variable will simply be ignored)
-  if (is.null(.globals$IncludeWWW) || is.na(.globals$IncludeWWW)) {
-    .globals$IncludeWWW <- TRUE
-  }
-
-  # If display mode is specified as an argument, apply it (overriding the
-  # value specified in DESCRIPTION, if any).
-  display.mode <- match.arg(display.mode)
-  if (display.mode == "normal") {
-    setShowcaseDefault(0)
-  }
-  else if (display.mode == "showcase") {
-    setShowcaseDefault(1)
-  }
-
-  require(shiny)
-
-  # determine port if we need to
-  if (is.null(port)) {
-
-    # Try up to 20 random ports. If we don't succeed just plow ahead
-    # with the final value we tried, and let the "real" startServer
-    # somewhere down the line fail and throw the error to the user.
-    #
-    # If we (think we) succeed, save the value as .globals$lastPort,
-    # and try that first next time the user wants a random port.
-
-    for (i in 1:20) {
-      if (!is.null(.globals$lastPort)) {
-        port <- .globals$lastPort
-        .globals$lastPort <- NULL
-      }
-      else {
-        # Try up to 20 random ports
-        while (TRUE) {
-          port <- p_randomInt(3000, 8000)
-          # Reject ports in this range that are considered unsafe by Chrome
-          # http://superuser.com/questions/188058/which-ports-are-considered-unsafe-on-chrome
-          # https://github.com/rstudio/shiny/issues/1784
-          if (!port %in% c(3659, 4045, 6000, 6665:6669, 6697)) {
-            break
-          }
-        }
-      }
-
-      # Test port to see if we can use it
-      tmp <- try(startServer(host, port, list()), silent=TRUE)
-      if (!inherits(tmp, 'try-error')) {
-        stopServer(tmp)
-        .globals$lastPort <- port
-        break
-      }
-    }
-  }
-
-  # Invoke user-defined onStop callbacks, before the application's internal
-  # onStop callbacks.
-  on.exit({
-    .globals$onStopCallbacks$invoke()
-    .globals$onStopCallbacks <- Callbacks$new()
-  }, add = TRUE)
-
-  # Extract appOptions (which is a list) and store them as shinyOptions, for
-  # this app. (This is the only place we have to store settings that are
-  # accessible both the UI and server portion of the app.)
-  unconsumeAppOptions(appParts$appOptions)
-
-  # Set up the onStop before we call onStart, so that it gets called even if an
-  # error happens in onStart.
-  if (!is.null(appParts$onStop))
-    on.exit(appParts$onStop(), add = TRUE)
-  if (!is.null(appParts$onStart))
-    appParts$onStart()
-
-  server <- startApp(appParts, port, host, quiet)
-
-  # Make the httpuv server object accessible. Needed for calling
-  # addResourcePath while app is running.
-  shinyOptions(server = server)
-
-  on.exit({
-    stopServer(server)
-  }, add = TRUE)
-
-  if (!is.character(port)) {
-    browseHost <- host
-    if (identical(host, "0.0.0.0")) {
-      # http://0.0.0.0/ doesn't work on QtWebKit (i.e. RStudio viewer)
-      browseHost <- "127.0.0.1"
-    } else if (identical(host, "::")) {
-      browseHost <- "::1"
-    }
-
-    if (httpuv::ipFamily(browseHost) == 6L) {
-      browseHost <- paste0("[", browseHost, "]")
-    }
-
-    appUrl <- paste("http://", browseHost, ":", port, sep="")
-    if (is.function(launch.browser))
-      launch.browser(appUrl)
-    else if (launch.browser)
-      utils::browseURL(appUrl)
-  } else {
-    appUrl <- NULL
-  }
-
-  # call application hooks
-  callAppHook("onAppStart", appUrl)
-  on.exit({
-    callAppHook("onAppStop", appUrl)
-  }, add = TRUE)
-
-  .globals$reterror <- NULL
-  .globals$retval <- NULL
-  .globals$stopped <- FALSE
-  # Top-level ..stacktraceoff..; matches with ..stacktraceon in observe(),
-  # reactive(), Callbacks$invoke(), and others
-  ..stacktraceoff..(
-    captureStackTraces({
-      while (!.globals$stopped) {
-        ..stacktracefloor..(serviceApp())
-      }
-    })
-  )
-
-  if (isTRUE(.globals$reterror)) {
-    stop(.globals$retval)
-  }
-  else if (.globals$retval$visible)
-    .globals$retval$value
-  else
-    invisible(.globals$retval$value)
-}
-
-#' Stop the currently running Shiny app
-#'
-#' Stops the currently running Shiny app, returning control to the caller of
-#' [runApp()].
-#'
-#' @param returnValue The value that should be returned from
-#'   [runApp()].
-#' @export
-stopApp <- function(returnValue = invisible()) {
-  # reterror will indicate whether retval is an error (i.e. it should be passed
-  # to stop() when the serviceApp loop stops) or a regular value (in which case
-  # it should simply be returned with the appropriate visibility).
-  .globals$reterror <- FALSE
-  ..stacktraceoff..(
-    tryCatch(
-      {
-        captureStackTraces(
-          .globals$retval <- withVisible(..stacktraceon..(force(returnValue)))
-        )
-      },
-      error = function(e) {
-        .globals$retval <- e
-        .globals$reterror <- TRUE
-      }
-    )
-  )
-
-  .globals$stopped <- TRUE
-  httpuv::interrupt()
-}
-
-#' Run Shiny Example Applications
-#'
-#' Launch Shiny example applications, and optionally, your system's web browser.
-#'
-#' @param example The name of the example to run, or `NA` (the default) to
-#'   list the available examples.
-#' @param port The TCP port that the application should listen on. Defaults to
-#'   choosing a random port.
-#' @param launch.browser If true, the system's default web browser will be
-#'   launched automatically after the app is started. Defaults to true in
-#'   interactive sessions only.
-#' @param host The IPv4 address that the application should listen on. Defaults
-#'   to the `shiny.host` option, if set, or `"127.0.0.1"` if not.
-#' @param display.mode The mode in which to display the example. Defaults to
-#'   `showcase`, but may be set to `normal` to see the example without
-#'   code or commentary.
-#'
-#' @examples
-#' ## Only run this example in interactive R sessions
-#' if (interactive()) {
-#'   # List all available examples
-#'   runExample()
-#'
-#'   # Run one of the examples
-#'   runExample("01_hello")
-#'
-#'   # Print the directory containing the code for all examples
-#'   system.file("examples", package="shiny")
-#' }
-#' @export
-runExample <- function(example=NA,
-                       port=NULL,
-                       launch.browser=getOption('shiny.launch.browser',
-                                                interactive()),
-                       host=getOption('shiny.host', '127.0.0.1'),
-                       display.mode=c("auto", "normal", "showcase")) {
-  examplesDir <- system.file('examples', package='shiny')
-  dir <- resolve(examplesDir, example)
-  if (is.null(dir)) {
-    if (is.na(example)) {
-      errFun <- message
-      errMsg <- ''
-    }
-    else {
-      errFun <- stop
-      errMsg <- paste('Example', example, 'does not exist. ')
-    }
-
-    errFun(errMsg,
-           'Valid examples are "',
-           paste(list.files(examplesDir), collapse='", "'),
-           '"')
-  }
-  else {
-    runApp(dir, port = port, host = host, launch.browser = launch.browser,
-           display.mode = display.mode)
-  }
-}
-
-#' Run a gadget
-#'
-#' Similar to `runApp`, but handles `input$cancel` automatically, and
-#' if running in RStudio, defaults to viewing the app in the Viewer pane.
-#'
-#' @param app Either a Shiny app object as created by
-#'   [`shinyApp()`][shiny] et al, or, a UI object.
-#' @param server Ignored if `app` is a Shiny app object; otherwise, passed
-#'   along to `shinyApp` (i.e. `shinyApp(ui = app, server = server)`).
-#' @param port See [`runApp()`][shiny].
-#' @param viewer Specify where the gadget should be displayed--viewer pane,
-#'   dialog window, or external browser--by passing in a call to one of the
-#'   [viewer()] functions.
-#' @param stopOnCancel If `TRUE` (the default), then an `observeEvent`
-#'   is automatically created that handles `input$cancel` by calling
-#'   `stopApp()` with an error. Pass `FALSE` if you want to handle
-#'   `input$cancel` yourself.
-#' @return The value returned by the gadget.
-#'
-#' @examples
-#' \dontrun{
-#' library(shiny)
-#'
-#' ui <- fillPage(...)
-#'
-#' server <- function(input, output, session) {
-#'   ...
-#' }
-#'
-#' # Either pass ui/server as separate arguments...
-#' runGadget(ui, server)
-#'
-#' # ...or as a single app object
-#' runGadget(shinyApp(ui, server))
-#' }
-#' @export
-runGadget <- function(app, server = NULL, port = getOption("shiny.port"),
-  viewer = paneViewer(), stopOnCancel = TRUE) {
-
-  if (!is.shiny.appobj(app)) {
-    app <- shinyApp(app, server)
-  }
-
-  if (isTRUE(stopOnCancel)) {
-    app <- decorateServerFunc(app, function(input, output, session) {
-      observeEvent(input$cancel, {
-        stopApp(stop("User cancel", call. = FALSE))
-      })
-    })
-  }
-
-  if (is.null(viewer)) {
-    viewer <- utils::browseURL
-  }
-
-  shiny::runApp(app, port = port, launch.browser = viewer)
-}
-
-# Add custom functionality to a Shiny app object's server func
-decorateServerFunc <- function(appobj, serverFunc) {
-  origServerFuncSource <- appobj$serverFuncSource
-  appobj$serverFuncSource <- function() {
-    origServerFunc <- origServerFuncSource()
-    function(input, output, session) {
-      serverFunc(input, output, session)
-
-      # The clientData and session arguments are optional; check if
-      # each exists
-      args <- argsForServerFunc(origServerFunc, session)
-      do.call(origServerFunc, args)
-    }
-  }
-  appobj
-}
-
-#' Viewer options
-#'
-#' Use these functions to control where the gadget is displayed in RStudio (or
-#' other R environments that emulate RStudio's viewer pane/dialog APIs). If
-#' viewer APIs are not available in the current R environment, then the gadget
-#' will be displayed in the system's default web browser (see
-#' [utils::browseURL()]).
-#'
-#' @return A function that takes a single `url` parameter, suitable for
-#'   passing as the `viewer` argument of [runGadget()].
-#'
-#' @rdname viewer
-#' @name viewer
-NULL
-
-#' @param minHeight The minimum height (in pixels) desired to show the gadget in
-#'   the viewer pane. If a positive number, resize the pane if necessary to show
-#'   at least that many pixels. If `NULL`, use the existing viewer pane
-#'   size. If `"maximize"`, use the maximum available vertical space.
-#' @rdname viewer
-#' @export
-paneViewer <- function(minHeight = NULL) {
-  viewer <- getOption("viewer")
-  if (is.null(viewer)) {
-    utils::browseURL
-  } else {
-    function(url) {
-      viewer(url, minHeight)
-    }
-  }
-}
-
-#' @param dialogName The window title to display for the dialog.
-#' @param width,height The desired dialog width/height, in pixels.
-#' @rdname viewer
-#' @export
-dialogViewer <- function(dialogName, width = 600, height = 600) {
-  viewer <- getOption("shinygadgets.showdialog")
-  if (is.null(viewer)) {
-    utils::browseURL
-  } else {
-    function(url) {
-      viewer(dialogName, url, width = width, height = height)
-    }
-  }
-}
-
-#' @param browser See [utils::browseURL()].
-#' @rdname viewer
-#' @export
-browserViewer <- function(browser = getOption("browser")) {
-  function(url) {
-    utils::browseURL(url, browser = browser)
-  }
-}
 
 # Returns TRUE if we're running in Shiny Server or other hosting environment,
 # otherwise returns FALSE.

R/shiny-options.R

@@ -8,31 +8,55 @@ getShinyOption <- function(name, default = NULL) {
   # Make sure to use named (not numeric) indexing
   name <- as.character(name)
 
-  if (name %in% names(.globals$options))
-    .globals$options[[name]]
-  else
-    default
+  # Check if there's a current session
+  session <- getDefaultReactiveDomain()
+  if (!is.null(session)) {
+    if (name %in% names(session$options)) {
+      return(session$options[[name]])
+    } else {
+      return(default)
+    }
+  }
+
+  # Check if there's a current app
+  app_state <- getCurrentAppState()
+  if (!is.null(app_state)) {
+    if (name %in% names(app_state$options)) {
+      return(app_state$options[[name]])
+    } else {
+      return(default)
+    }
+  }
+
+  # If we got here, look in global options
+  if (name %in% names(.globals$options)) {
+    return(.globals$options[[name]])
+  } else {
+    return(default)
+  }
 }
 
 #' Get or set Shiny options
 #'
-#' `getShinyOption()` retrieves the value of a Shiny option. `shinyOptions()`
-#' sets the value of Shiny options; it can also be used to return a list of all
-#' currently-set Shiny options.
+#' @description
 #'
-#' @section Scope:
-#' There is a global option set which is available by default. When a Shiny
-#' application is run with [runApp()], that option set is duplicated and the
-#' new option set is available for getting or setting values. If options
-#' are set from `global.R`, `app.R`, `ui.R`, or `server.R`, or if they are set
-#' from inside the server function, then the options will be scoped to the
-#' application. When the application exits, the new option set is discarded and
-#' the global option set is restored.
+#' There are two mechanisms for working with options for Shiny. One is the
+#' [options()] function, which is part of base R, and the other is the
+#' `shinyOptions()` function, which is in the Shiny package. The reason for
+#' these two mechanisms is has to do with legacy code and scoping.
 #'
-#' @section Options:
-#' There are a number of global options that affect Shiny's behavior. These can
-#' be set globally with `options()` or locally (for a single app) with
-#' `shinyOptions()`.
+#' The [options()] function sets options globally, for the duration of the R
+#' process. The [getOption()] function retrieves the value of an option. All
+#' shiny related options of this type are prefixed with `"shiny."`.
+#'
+#' The `shinyOptions()` function sets the value of a shiny option, but unlike
+#' `options()`, it is not always global in scope; the options may be scoped
+#' globally, to an application, or to a user session in an application,
+#' depending on the context. The `getShinyOption()` function retrieves a value
+#' of a shiny option. Currently, the options set via `shinyOptions` are for
+#' internal use only.
+#'
+#' @section Options with `options()`:
 #'
 #' \describe{
 #' \item{shiny.autoreload (defaults to `FALSE`)}{If `TRUE` when a Shiny app is launched, the
@@ -65,7 +89,7 @@ getShinyOption <- function(name, default = NULL) {
 #'   [runApp()] for more information.}
 #' \item{shiny.jquery.version (defaults to `3`)}{The major version of jQuery to use.
 #' Currently only values of `3` or `1` are supported. If `1`, then jQuery 1.12.4 is used. If `3`,
-#' then jQuery 3.4.1 is used.}
+#' then jQuery 3.5.1 is used.}
 #' \item{shiny.json.digits (defaults to `16`)}{The number of digits to use when converting
 #'   numbers to JSON format to send to the client web browser.}
 #' \item{shiny.launch.browser (defaults to `interactive()`)}{A boolean which controls the default behavior
@@ -107,46 +131,119 @@ getShinyOption <- function(name, default = NULL) {
 #'   `"recv"` (only print messages received by the server), `TRUE`
 #'   (print all messages), or `FALSE` (default; don't print any of these
 #'   messages).}
+#' \item{shiny.autoload.r (defaults to `TRUE`)}{If `TRUE`, then the R/
+#'   of a shiny app will automatically be sourced.}
 #' \item{shiny.usecairo (defaults to `TRUE`)}{This is used to disable graphical rendering by the
 #'   Cairo package, if it is installed. See [plotPNG()] for more
 #'   information.}
 #' }
+#'
+#'
+#' @section Scoping for `shinyOptions()`:
+#'
+#'   There are three levels of scoping for `shinyOptions()`: global,
+#'   application, and session.
+#'
+#'   The global option set is available by default. Any calls to
+#'   `shinyOptions()` and `getShinyOption()` outside of an app will access the
+#'   global option set.
+#'
+#'   When a Shiny application is run with [runApp()], the global option set is
+#'   duplicated and the new option set is available at the application level. If
+#'   options are set from `global.R`, `app.R`, `ui.R`, or `server.R` (but
+#'   outside of the server function), then the application-level options will be
+#'   modified.
+#'
+#'   Each time a user session is started, the application-level option set is
+#'   duplicated, for that session. If the options are set from inside the server
+#'   function, then they will be scoped to the session.
+#'
+#' @section Options with `shinyOptions()`:
+#'
+#'   There are a number of global options that affect Shiny's behavior. These
+#'   can be set globally with `options()` or locally (for a single app) with
+#'   `shinyOptions()`.
+#'
+#'   \describe{ \item{cache}{A caching object that will be used by
+#'   [renderCachedPlot()]. If not specified, a [memoryCache()] will be used.} }
+#'
 #' @param ... Options to set, with the form `name = value`.
 #' @aliases shiny-options
-#' @examples
-#' \dontrun{
-#' shinyOptions(myOption = 10)
-#' getShinyOption("myOption")
-#' }
 #' @export
 shinyOptions <- function(...) {
   newOpts <- list(...)
 
   if (length(newOpts) > 0) {
+    # If we're within a session, modify at the session level.
+    session <- getDefaultReactiveDomain()
+    if (!is.null(session)) {
+      # Modify session-level-options
+      session$options <- dropNulls(mergeVectors(session$options, newOpts))
+      return(invisible(session$options))
+    }
+
+    # If not in a session, but we have a currently running app, modify options
+    # at the app level.
+    app_state <- getCurrentAppState()
+    if (!is.null(app_state)) {
+      # Modify app-level options
+      app_state$options <- dropNulls(mergeVectors(app_state$options, newOpts))
+      return(invisible(app_state$options))
+    }
+
+    # If no currently running app, modify global options and return them.
     .globals$options <- dropNulls(mergeVectors(.globals$options, newOpts))
-    invisible(.globals$options)
-  } else {
-    .globals$options
+    return(invisible(.globals$options))
   }
-}
 
+  # If not setting any options, just return current option set, visibly.
 
-# Eval an expression with a new option set
-withLocalOptions <- function(expr) {
-  oldOptionSet <- .globals$options
-  on.exit(.globals$options <- oldOptionSet)
+  session <- getDefaultReactiveDomain()
+  if (!is.null(session)) {
+    return(session$options)
+  }
 
-  expr
+  app_state <- getCurrentAppState()
+  if (!is.null(app_state)) {
+    return(app_state$options)
+  }
+
+  return(.globals$options)
 }
 
 
 # Get specific shiny options and put them in a list, reset those shiny options,
 # and then return the options list. This should be during the creation of a
-# shiny app object, which happens before another option frame is added to the
-# options stack (the new option frame is added when the app is run). This
-# function "consumes" the options when the shinyApp object is created, so the
-# options won't affect another app that is created later.
-consumeAppOptions <- function() {
+# shiny app object. This function "consumes" the options when the shinyApp
+# object is created, so the options won't affect another app that is created
+# later.
+#
+# ==== Example ====
+# shinyOptions(bookmarkStore = 1234)
+# # This now returns 1234.
+# getShinyOption("bookmarkStore")
+#
+# # Creating the app captures the bookmarkStore option and clears it.
+# s <- shinyApp(
+#   fluidPage(verbatimTextOutput("txt")),
+#   function(input, output) {
+#     output$txt <- renderText(getShinyOption("bookmarkStore"))
+#   }
+# )
+#
+# # This now returns NULL.
+# getShinyOption("bookmarkStore")
+#
+# When running the app, the app will display "1234"
+# runApp(s)
+#
+# # After quitting the app, this still returns NULL.
+# getShinyOption("bookmarkStore")
+# ==================
+#
+# If another app had been created after s was created, but before s was run,
+# then it would capture the value of "bookmarkStore" at the time of creation.
+captureAppOptions <- function() {
   options <- list(
     appDir = getwd(),
     bookmarkStore = getShinyOption("bookmarkStore")
@@ -157,9 +254,9 @@ consumeAppOptions <- function() {
   options
 }
 
-# Do the inverse of consumeAppOptions. This should be called once the app is
+# Do the inverse of captureAppOptions. This should be called once the app is
 # started.
-unconsumeAppOptions <- function(options) {
+applyCapturedAppOptions <- function(options) {
   if (!is.null(options)) {
     do.call(shinyOptions, options)
   }

R/shiny.R

@@ -117,9 +117,6 @@ workerId <- local({
 #' \item{clientData}{
 #'   A [reactiveValues()] object that contains information about the client.
 #'   \itemize{
-#'     \item{`allowDataUriScheme` is a logical value that indicates whether
-#'       the browser is able to handle URIs that use the `data:` scheme.
-#'     }
 #'     \item{`pixelratio` reports the "device pixel ratio" from the web browser,
 #'       or 1 if none is reported. The value is 2 for Apple Retina displays.
 #'     }
@@ -474,8 +471,22 @@ ShinySession <- R6Class(
 
           if (!is.null(params$input)) {
 
-            allInputs <- isolate(
-              reactiveValuesToList(self$input, all.names = TRUE)
+            # The isolate and reactiveValuesToList calls are being executed
+            # in a non-reactive context, but will produce output in the reactlog
+            # Seeing new, unlabelled reactives ONLY when calling shinytest is
+            # jarring / frustrating to debug.
+            # Since labeling these values is not currently supported in reactlog,
+            # it is better to hide them.
+            # Hopefully we can replace this with something like
+            # `with_reactlog_group("shinytest", {})`, which would visibily explain
+            # why the new reactives are added when calling shinytest
+            withr::with_options(
+              list(shiny.reactlog = FALSE),
+              {
+                allInputs <- isolate(
+                  reactiveValuesToList(self$input, all.names = TRUE)
+                )
+              }
             )
 
             # If params$input is "1", return all; otherwise return just the
@@ -651,6 +662,7 @@ ShinySession <- R6Class(
     cache = NULL,         # A cache object used in the session
     user = NULL,
     groups = NULL,
+    options = NULL,       # For session-specific shinyOptions()
 
     initialize = function(websocket) {
       private$websocket <- websocket
@@ -681,6 +693,9 @@ ShinySession <- R6Class(
       private$.outputs <- list()
       private$.outputOptions <- list()
 
+      # Copy app-level options
+      self$options <- getCurrentAppState()$options
+
       self$cache <- MemoryCache$new()
 
       private$bookmarkCallbacks <- Callbacks$new()
@@ -688,7 +703,7 @@ ShinySession <- R6Class(
       private$restoreCallbacks <- Callbacks$new()
       private$restoredCallbacks <- Callbacks$new()
 
-      private$testMode <- .globals$testMode
+      private$testMode <- getShinyOption("testmode", default = FALSE)
       private$enableTestSnapshot()
 
       private$registerSessionEndCallbacks()
@@ -928,7 +943,33 @@ ShinySession <- R6Class(
 
       impl <- .subset2(x, 'impl')
       key <- .subset2(x, 'ns')(name)
-      impl$freeze(key)
+
+      is_input <- identical(impl, private$.input)
+
+      # There's no good reason for us not to just do force=TRUE, except that we
+      # know this fixes problems for freezeReactiveValue(input) but we don't
+      # currently even know what you would use freezeReactiveValue(rv) for. In
+      # the spirit of not breaking things we don't understand, we're making as
+      # targeted a fix as possible, while emitting a deprecation warning (below)
+      # that should help us gather more data about the other case.
+      impl$freeze(key, invalidate = is_input)
+
+      if (is_input) {
+        # Notify the client that this input was frozen. The client will ensure
+        # that the next time it sees a value for that input, even if the value
+        # has not changed from the last known value of that input, it will be
+        # sent to the server anyway.
+        private$sendMessage(frozen = list(
+          ids = list(key)
+        ))
+      } else {
+        if (getOption("shiny.deprecation.messages", TRUE) && getOption("shiny.deprecation.messages.freeze", TRUE)) {
+          rlang::warn(
+            "Support for calling freezeReactiveValue() with non-`input` reactiveValues objects is soft-deprecated, and may be removed in a future version of Shiny. (See https://github.com/rstudio/shiny/issues/3063)",
+            .frequency = "once", .frequency_id = "freezeReactiveValue")
+        }
+      }
+
       self$onFlushed(function() impl$thaw(key))
     },
 
@@ -1238,6 +1279,41 @@ ShinySession <- R6Class(
         modal = list(type = type, message = message)
       )
     },
+
+    setCurrentTheme = function(theme) {
+      # This function does three things: (1) sets theme as the current
+      # bootstrapTheme, (2) re-executes any registered theme dependencies, and
+      # (3) sends the resulting dependencies to the client.
+
+      # Note that this will automatically scope to the session.
+      shinyOptions(bootstrapTheme = theme)
+
+      # Call any theme dependency functions and make sure we get a list of deps back
+      funcs <- getShinyOption("themeDependencyFuncs")
+      deps <- lapply(funcs, function(func) {
+        deps <- func(theme)
+        if (length(deps) == 0) return(NULL)
+        if (inherits(deps, "html_dependency")) return(list(deps))
+        is_dep <- vapply(deps, inherits, logical(1), "html_dependency")
+        if (all(is_dep)) return(deps)
+        stop("All registerThemeDependency() functions must yield htmlDependency() object(s)", call. = FALSE)
+      })
+      # Work with a flat list of dependencies
+      deps <- unlist(dropNulls(deps), recursive = FALSE)
+      # Add a special flag to let Shiny.renderDependencies() know that, even
+      # though we've already rendered the dependency, that we need to re-render
+      # the stylesheets
+      deps <- lapply(deps, function(dep) {
+        dep$restyle <- TRUE
+        dep
+      })
+
+      # Send any dependencies to be re-rendered
+      if (length(deps)) {
+        insertUI(selector = "body", where = "afterEnd", ui = tagList(deps))
+      }
+    },
+
     dispatch = function(msg) {
       method <- paste('@', msg$method, sep='')
       func <- try(self[[method]], silent = TRUE)
@@ -1319,6 +1395,13 @@ ShinySession <- R6Class(
 
       # If we don't already have width for this output info, see if it's
       # present, and if so, add it.
+
+      # Note that all the following clientData values (which are reactiveValues)
+      # are wrapped in reactive() so that users can take a dependency on particular
+      # output info (i.e., just depend on width/height, or just depend on bg, fg, etc).
+      # To put it another way, if getCurrentOutputInfo() simply returned a list of values
+      # from self$clientData, than anything that calls getCurrentOutputInfo() would take
+      # a reactive dependency on all of these values.
       if (! ("width" %in% names(tmp_info)) ) {
         width_name  <- paste0("output_", name, "_width")
         if (width_name %in% cd_names()) {
@@ -1337,6 +1420,42 @@ ShinySession <- R6Class(
         }
       }
 
+      # parseCssColors() currently errors out if you hand it any NAs
+      # This'll make sure we're always working with a string (and if
+      # that string isn't a valid CSS color, will return NA)
+      # https://github.com/rstudio/htmltools/issues/161
+      parse_css_colors <- function(x) {
+        htmltools::parseCssColors(x %OR% "", mustWork = FALSE)
+      }
+
+      bg <- paste0("output_", name, "_bg")
+      if (bg %in% cd_names()) {
+        tmp_info$bg <- reactive({
+          parse_css_colors(self$clientData[[bg]])
+        })
+      }
+
+      fg <- paste0("output_", name, "_fg")
+      if (fg %in% cd_names()) {
+        tmp_info$fg <- reactive({
+          parse_css_colors(self$clientData[[fg]])
+        })
+      }
+
+      accent <- paste0("output_", name, "_accent")
+      if (accent %in% cd_names()) {
+        tmp_info$accent <- reactive({
+          parse_css_colors(self$clientData[[accent]])
+        })
+      }
+
+      font <- paste0("output_", name, "_font")
+      if (font %in% cd_names()) {
+        tmp_info$font <- reactive({
+          self$clientData[[font]]
+        })
+      }
+
       private$outputInfo[[name]] <- tmp_info
       private$outputInfo[[name]]
     },
@@ -1628,10 +1747,6 @@ ShinySession <- R6Class(
       )
     },
 
-    # Public RPC methods
-    `@uploadieFinish` = function() {
-      # Do nothing; just want the side effect of flushReact, output flush, etc.
-    },
     `@uploadInit` = function(fileInfos) {
       maxSize <- getOption('shiny.maxRequestSize', 5 * 1024 * 1024)
       fileInfos <- lapply(fileInfos, function(fi) {
@@ -1698,33 +1813,6 @@ ShinySession <- R6Class(
         }
       }
 
-      # @description Only applicable to files uploaded via IE. When possible,
-      #   adds the appropriate extension to temporary files created by
-      #   \code{mime::parse_multipart}.
-      # @param multipart A named list as returned by
-      #   \code{mime::parse_multipart}
-      # @return A named list with datapath updated to point to the new location
-      #   of the file, if an extension was added.
-      maybeMoveIEUpload <- function(multipart) {
-        if (is.null(multipart)) return(NULL)
-
-        lapply(multipart, function(input) {
-          oldPath <- input$datapath
-          newPath <- paste0(oldPath, maybeGetExtension(input$name))
-          if (oldPath != newPath) {
-            file.rename(oldPath, newPath)
-            input$datapath <- newPath
-          }
-          input
-        })
-      }
-
-      if (matches[2] == 'uploadie' && identical(req$REQUEST_METHOD, "POST")) {
-        id <- URLdecode(matches[3])
-        res <- maybeMoveIEUpload(mime::parse_multipart(req))
-        private$.input$set(id, res[[id]])
-        return(httpResponse(200, 'text/plain', 'OK'))
-      }
 
       if (matches[2] == 'download') {
 
@@ -1833,33 +1921,18 @@ ShinySession <- R6Class(
 
       return(httpResponse(404, 'text/html', '<h1>Not Found</h1>'))
     },
-    saveFileUrl = function(name, data, contentType, extra=list()) {
-      "Creates an entry in the file map for the data, and returns a URL pointing
-      to the file."
-      self$files$set(name, list(data=data, contentType=contentType))
-      return(sprintf('session/%s/file/%s?w=%s&r=%s',
-                     URLencode(self$token, TRUE),
-                     URLencode(name, TRUE),
-                     workerId(),
-                     createUniqueId(8)))
-    },
     # Send a file to the client
     fileUrl = function(name, file, contentType='application/octet-stream') {
-      "Return a URL for a file to be sent to the client. If allowDataUriScheme
-      is TRUE, then the file will be base64 encoded and embedded in the URL.
-      Otherwise, a URL pointing to the file will be returned."
+      "Return a URL for a file to be sent to the client. The file will be base64
+      encoded and embedded in the URL."
       bytes <- file.info(file)$size
       if (is.na(bytes))
         return(NULL)
 
       fileData <- readBin(file, 'raw', n=bytes)
 
-      if (isTRUE(private$.clientData$.values$get("allowDataUriScheme"))) {
-        b64 <- rawToBase64(fileData)
-        return(paste('data:', contentType, ';base64,', b64, sep=''))
-      } else {
-        return(self$saveFileUrl(name, fileData, contentType))
-      }
+      b64 <- rawToBase64(fileData)
+      return(paste('data:', contentType, ';base64,', b64, sep=''))
     },
     registerDownload = function(name, filename, contentType, func) {
 
@@ -2099,16 +2172,69 @@ outputOptions <- function(x, name, ...) {
 }
 
 
-#' Get information about the output that is currently being executed.
+#' Get output information
 #'
-#' @return A list with information about the current output, including the
-#'   `name` of the output. If no output is currently being executed, this will
-#'   return `NULL`.
+#' Returns information about the currently executing output, including its `name` (i.e., `outputId`);
+#' and in some cases, relevant sizing and styling information.
 #'
 #' @param session The current Shiny session.
 #'
+#' @return `NULL` if called outside of an output context; otherwise,
+#'   a list which includes:
+#'   * The `name` of the output (reported for any output).
+#'   * If the output is a `plotOutput()` or `imageOutput()`, then:
+#'     * `height`: a reactive expression which returns the height in pixels.
+#'     * `width`: a reactive expression which returns the width in pixels.
+#'  * If the output is a `plotOutput()`, `imageOutput()`, or contains a `shiny-report-theme` class, then:
+#'     * `bg`: a reactive expression which returns the background color.
+#'     * `fg`: a reactive expression which returns the foreground color.
+#'     * `accent`: a reactive expression which returns the hyperlink color.
+#'     * `font`: a reactive expression which returns a list of font information, including:
+#'       * `families`: a character vector containing the CSS `font-family` property.
+#'       * `size`: a character string containing the CSS `font-size` property
+#'
 #' @export
+#' @examples
+#'
+#' if (interactive()) {
+#'   shinyApp(
+#'     fluidPage(
+#'       tags$style(HTML("body {background-color: black; color: white; }")),
+#'       tags$style(HTML("body a {color: purple}")),
+#'       tags$style(HTML("#info {background-color: teal; color: orange; }")),
+#'       plotOutput("p"),
+#'       "Computed CSS styles for the output named info:",
+#'       tagAppendAttributes(
+#'         textOutput("info"),
+#'         class = "shiny-report-theme"
+#'       )
+#'     ),
+#'     function(input, output) {
+#'       output$p <- renderPlot({
+#'         info <- getCurrentOutputInfo()
+#'         par(bg = info$bg(), fg = info$fg(), col.axis = info$fg(), col.main = info$fg())
+#'         plot(1:10, col = info$accent(), pch = 19)
+#'         title("A simple R plot that uses its CSS styling")
+#'       })
+#'       output$info <- renderText({
+#'         info <- getCurrentOutputInfo()
+#'         jsonlite::toJSON(
+#'           list(
+#'             bg = info$bg(),
+#'             fg = info$fg(),
+#'             accent = info$accent(),
+#'             font = info$font()
+#'           ),
+#'           auto_unbox = TRUE
+#'         )
+#'       })
+#'     }
+#'   )
+#' }
+#'
+#'
 getCurrentOutputInfo <- function(session = getDefaultReactiveDomain()) {
+  if (is.null(session)) return(NULL)
   session$getCurrentOutputInfo()
 }
 
@@ -2296,3 +2422,56 @@ ShinyServerTimingRecorder <- R6Class("ShinyServerTimingRecorder",
 )
 
 missingOutput <- function(...) req(FALSE)
+
+#' Insert inline Markdown
+#'
+#' This function accepts
+#' [Markdown](https://en.wikipedia.org/wiki/Markdown)-syntax text and returns
+#' HTML that may be included in Shiny UIs.
+#'
+#' Leading whitespace is trimmed from Markdown text with [glue::trim()].
+#' Whitespace trimming ensures Markdown is processed correctly even when the
+#' call to `markdown()` is indented within surrounding R code.
+#'
+#' By default, [Github extensions][commonmark::extensions] are enabled, but this
+#' can be disabled by passing `extensions = FALSE`.
+#'
+#' Markdown rendering is performed by [commonmark::markdown_html()]. Additional
+#' arguments to `markdown()` are passed as arguments to `markdown_html()`
+#'
+#' @param mds A character vector of Markdown source to convert to HTML. If the
+#'   vector has more than one element, a single-element character vector of
+#'   concatenated HTML is returned.
+#' @param extensions Enable Github syntax extensions; defaults to `TRUE`.
+#' @param .noWS Character vector used to omit some of the whitespace that would
+#'   normally be written around generated HTML. Valid options include `before`,
+#'   `after`, and `outside` (equivalent to `before` and `end`).
+#' @param ... Additional arguments to pass to [commonmark::markdown_html()].
+#'   These arguments are _[dynamic][rlang::dyn-dots]_.
+#'
+#' @return a character vector marked as HTML.
+#' @export
+#' @examples
+#' ui <- fluidPage(
+#'   markdown("
+#'     # Markdown Example
+#'
+#'     This is a markdown paragraph, and will be contained within a `<p>` tag
+#'     in the UI.
+#'
+#'     The following is an unordered list, which will be represented in the UI as
+#'     a `<ul>` with `<li>` children:
+#'
+#'     * a bullet
+#'     * another
+#'
+#'     [Links](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/a) work;
+#'     so does *emphasis*.
+#'
+#'     To see more of what's possible, check out [commonmark.org/help](https://commonmark.org/help).
+#'     ")
+#' )
+markdown <- function(mds, extensions = TRUE, .noWS = NULL, ...) {
+  html <- rlang::exec(commonmark::markdown_html, glue::trim(mds), extensions = extensions, ...)
+  htmltools::HTML(html, .noWS = .noWS)
+}

R/shinyapp.R

@@ -93,8 +93,7 @@ shinyApp <- function(ui, server, onStart=NULL, options=list(),
 
   # Store the appDir and bookmarking-related options, so that we can read them
   # from within the app.
-  shinyOptions(appDir = getwd())
-  appOptions <- consumeAppOptions()
+  appOptions <- captureAppOptions()
 
   structure(
     list(
@@ -227,7 +226,6 @@ shinyAppDir_serverR <- function(appDir, options=list()) {
   onStart <- function() {
     oldwd <<- getwd()
     setwd(appDir)
-    monitorHandle <<- initAutoReloadMonitor(appDir)
     # TODO: we should support hot reloading on global.R and R/*.R changes.
     if (getOption("shiny.autoload.r", TRUE)) {
       loadSupport(appDir, renv=sharedEnv, globalrenv=globalenv())
@@ -235,11 +233,17 @@ shinyAppDir_serverR <- function(appDir, options=list()) {
       if (file.exists(file.path.ci(appDir, "global.R")))
         sourceUTF8(file.path.ci(appDir, "global.R"))
     }
+    monitorHandle <<- initAutoReloadMonitor(appDir)
   }
   onStop <- function() {
     setwd(oldwd)
-    monitorHandle()
-    monitorHandle <<- NULL
+    # It is possible that while calling appObj()$onStart() or loadingSupport, an error occured
+    # This will cause `onStop` to be called.
+    #   The `oldwd` will exist, but `monitorHandle` is not a function yet.
+    if (is.function(monitorHandle)) {
+      monitorHandle()
+      monitorHandle <<- NULL
+    }
   }
 
   structure(
@@ -286,8 +290,9 @@ initAutoReloadMonitor <- function(dir) {
   lastValue <- NULL
   observeLabel <- paste0("File Auto-Reload - '", basename(dir), "'")
   obs <- observe(label = observeLabel, {
-    files <- sort(list.files(dir, pattern = filePattern, recursive = TRUE,
-      ignore.case = TRUE))
+    files <- sort_c(
+      list.files(dir, pattern = filePattern, recursive = TRUE, ignore.case = TRUE)
+    )
     times <- file.info(files)$mtime
     names(times) <- files
 
@@ -297,14 +302,14 @@ initAutoReloadMonitor <- function(dir) {
     } else if (!identical(lastValue, times)) {
       # We've changed!
       lastValue <<- times
-      for (session in appsByToken$values()) {
-        session$reload()
-      }
+      autoReloadCallbacks$invoke()
     }
 
     invalidateLater(getOption("shiny.autoreload.interval", 500))
   })
 
+  onStop(obs$destroy)
+
   obs$destroy
 }
 
@@ -325,37 +330,49 @@ initAutoReloadMonitor <- function(dir) {
 #' @details The files are sourced in alphabetical order (as determined by
 #'   [list.files]). `global.R` is evaluated before the supporting R files in the
 #'   `R/` directory.
-#' @param appDir The application directory
+#' @param appDir The application directory. If `appDir` is `NULL` or
+#'   not supplied, the nearest enclosing directory that is a Shiny app, starting
+#'   with the current directory, is used.
 #' @param renv The environmeny in which the files in the `R/` directory should
 #'   be evaluated.
 #' @param globalrenv The environment in which `global.R` should be evaluated. If
 #'   `NULL`, `global.R` will not be evaluated at all.
 #' @export
-loadSupport <- function(appDir, renv=new.env(parent=globalenv()), globalrenv=globalenv()){
+loadSupport <- function(appDir=NULL, renv=new.env(parent=globalenv()), globalrenv=globalenv()){
+  require(shiny)
+
+  if (is.null(appDir)) {
+    appDir <- findEnclosingApp(".")
+  }
+
   if (!is.null(globalrenv)){
     # Evaluate global.R, if it exists.
-    if (file.exists(file.path.ci(appDir, "global.R"))){
-      sourceUTF8(file.path.ci(appDir, "global.R"), envir=globalrenv)
+    globalPath <- file.path.ci(appDir, "global.R")
+    if (file.exists(globalPath)){
+      withr::with_dir(appDir, {
+        sourceUTF8(basename(globalPath), envir=globalrenv)
+      })
     }
   }
 
+
   helpersDir <- file.path(appDir, "R")
 
   disabled <- list.files(helpersDir, pattern="^_disable_autoload\\.r$", recursive=FALSE, ignore.case=TRUE)
   if (length(disabled) > 0){
-    message("R/_disable_autoload.R detected; not loading the R/ directory automatically")
     return(invisible(renv))
   }
 
   helpers <- list.files(helpersDir, pattern="\\.[rR]$", recursive=FALSE, full.names=TRUE)
+  # Ensure files in R/ are sorted according to the 'C' locale before sourcing.
+  # This convention is based on the default for packages. For details, see:
+  # https://cran.r-project.org/doc/manuals/r-release/R-exts.html#The-DESCRIPTION-file
+  helpers <- sort_c(helpers)
+  helpers <- normalizePath(helpers)
 
-  if (length(helpers) > 0){
-    message("Automatically loading ", length(helpers), " .R file",
-            ifelse(length(helpers) != 1, "s", ""),
-            " found in the R/ directory.\nSee https://rstd.io/shiny-autoload for more info.")
-  }
-
-  lapply(helpers, sourceUTF8, envir=renv)
+  withr::with_dir(appDir, {
+    lapply(helpers, sourceUTF8, envir=renv)
+  })
 
   invisible(renv)
 }
@@ -367,27 +384,30 @@ shinyAppDir_appR <- function(fileName, appDir, options=list())
 {
   fullpath <- file.path.ci(appDir, fileName)
 
-  # In an upcoming version of shiny, this option will go away.
-  if (getOption("shiny.autoload.r", TRUE)) {
-    # Create a child env which contains all the helpers and will be the shared parent
-    # of the ui.R and server.R load.
-    sharedEnv <- new.env(parent = globalenv())
-  } else {
-    sharedEnv <- globalenv()
-  }
-
-
   # This sources app.R and caches the content. When appObj() is called but
   # app.R hasn't changed, it won't re-source the file. But if called and
   # app.R has changed, it'll re-source the file and return the result.
   appObj <- cachedFuncWithFile(appDir, fileName, case.sensitive = FALSE,
     function(appR) {
+      wasDir <- setwd(appDir)
+      on.exit(setwd(wasDir))
+
+      # TODO: we should support hot reloading on R/*.R changes.
+      # In an upcoming version of shiny, this option will go away.
+      if (getOption("shiny.autoload.r", TRUE)) {
+        # Create a child env which contains all the helpers and will be the shared parent
+        # of the ui.R and server.R load.
+        sharedEnv <- new.env(parent = globalenv())
+        loadSupport(appDir, renv=sharedEnv, globalrenv=NULL)
+      } else {
+        sharedEnv <- globalenv()
+      }
       result <- sourceUTF8(fullpath, envir = new.env(parent = sharedEnv))
 
       if (!is.shiny.appobj(result))
         stop("app.R did not return a shiny.appobj object.")
 
-      unconsumeAppOptions(result$appOptions)
+      applyCapturedAppOptions(result$appOptions)
 
       return(result)
     }
@@ -425,19 +445,23 @@ shinyAppDir_appR <- function(fileName, appDir, options=list())
   onStart <- function() {
     oldwd <<- getwd()
     setwd(appDir)
-    # TODO: we should support hot reloading on R/*.R changes.
-    if (getOption("shiny.autoload.r", TRUE)) {
-      loadSupport(appDir, renv=sharedEnv, globalrenv=NULL)
-    }
-    monitorHandle <<- initAutoReloadMonitor(appDir)
     if (!is.null(appObj()$onStart)) appObj()$onStart()
+    monitorHandle <<- initAutoReloadMonitor(appDir)
+    invisible()
   }
   onStop <- function() {
     setwd(oldwd)
-    monitorHandle()
-    monitorHandle <<- NULL
+    # It is possible that while calling appObj()$onStart() or loadingSupport, an error occured
+    # This will cause `onStop` to be called.
+    #   The `oldwd` will exist, but `monitorHandle` is not a function yet.
+    if (is.function(monitorHandle)) {
+      monitorHandle()
+      monitorHandle <<- NULL
+    }
   }
 
+  appObjOptions <- appObj()$options
+
   structure(
     list(
       # fallbackWWWDir is _not_ listed in staticPaths, because it needs to
@@ -456,7 +480,7 @@ shinyAppDir_appR <- function(fileName, appDir, options=list())
       serverFuncSource = dynServerFuncSource,
       onStart = onStart,
       onStop = onStop,
-      options = options
+      options = joinOptions(appObjOptions, options)
     ),
     class = "shiny.appobj"
   )
@@ -506,18 +530,25 @@ is.shiny.appobj <- function(x) {
 }
 
 #' @rdname shiny.appobj
-#' @param ... Additional parameters to be passed to print.
+#' @param ... Ignored.
 #' @export
 print.shiny.appobj <- function(x, ...) {
-  opts <- x$options %OR% list()
-  opts <- opts[names(opts) %in%
-      c("port", "launch.browser", "host", "quiet",
-        "display.mode", "test.mode")]
+  runApp(x)
+}
 
-  # Quote x and put runApp in quotes so that there's a nicer stack trace (#1851)
-  args <- c(list(quote(x)), opts)
+# Joins two options objects (i.e. the `options` argument to shinyApp(),
+# shinyAppDir(), etc.). The values in `b` should take precedence over the values
+# in `a`. Given the current options available, it is safe to throw away any
+# values in `a` that are provided in `b`. But in the future, if new options are
+# introduced that need to be combined in some way instead of simply overwritten,
+# then this will be the place to do it. See the implementations of
+# print.shiny.appobj() and runApp() (for the latter, look specifically for
+# "findVal()") to determine the set of possible options.
+joinOptions <- function(a, b) {
+  stopifnot(is.null(a) || is.list(a))
+  stopifnot(is.null(b) || is.list(b))
 
-  do.call("runApp", args)
+  mergeVectors(a, b)
 }
 
 #' @rdname shiny.appobj
@@ -547,84 +578,3 @@ deferredIFrame <- function(path, width, height) {
     class = "shiny-frame shiny-frame-deferred"
   )
 }
-
-#' Knitr S3 methods
-#'
-#' These S3 methods are necessary to help Shiny applications and UI chunks embed
-#' themselves in knitr/rmarkdown documents.
-#'
-#' @name knitr_methods
-#' @param x Object to knit_print
-#' @param ... Additional knit_print arguments
-NULL
-
-# If there's an R Markdown runtime option set but it isn't set to Shiny, then
-# return a warning indicating the runtime is inappropriate for this object.
-# Returns NULL in all other cases.
-shiny_rmd_warning <- function() {
-  runtime <- knitr::opts_knit$get("rmarkdown.runtime")
-  if (!is.null(runtime) && runtime != "shiny")
-    # note that the RStudio IDE checks for this specific string to detect Shiny
-    # applications in static document
-    list(structure(
-      "Shiny application in a static R Markdown document",
-      class = "rmd_warning"))
-  else
-    NULL
-}
-
-#' @rdname knitr_methods
-knit_print.shiny.appobj <- function(x, ...) {
-  opts <- x$options %OR% list()
-  width <- if (is.null(opts$width)) "100%" else opts$width
-  height <- if (is.null(opts$height)) "400" else opts$height
-
-  runtime <- knitr::opts_knit$get("rmarkdown.runtime")
-  if (!is.null(runtime) && runtime != "shiny") {
-    # If not rendering to a Shiny document, create a box exactly the same
-    # dimensions as the Shiny app would have had (so the document continues to
-    # flow as it would have with the app), and display a diagnostic message
-    width <- validateCssUnit(width)
-    height <- validateCssUnit(height)
-    output <- tags$div(
-      style=paste("width:", width, "; height:", height, "; text-align: center;",
-                  "box-sizing: border-box;", "-moz-box-sizing: border-box;",
-                  "-webkit-box-sizing: border-box;"),
-      class="muted well",
-      "Shiny applications not supported in static R Markdown documents")
-  }
-  else {
-    path <- addSubApp(x)
-    output <- deferredIFrame(path, width, height)
-  }
-
-  # If embedded Shiny apps ever have JS/CSS dependencies (like pym.js) we'll
-  # need to grab those and put them in meta, like in knit_print.shiny.tag. But
-  # for now it's not an issue, so just return the HTML and warning.
-
-  knitr::asis_output(htmlPreserve(format(output, indent=FALSE)),
-                     meta = shiny_rmd_warning(), cacheable = FALSE)
-}
-
-# Let us use a nicer syntax in knitr chunks than literally
-# calling output$value <- renderFoo(...) and fooOutput().
-#' @rdname knitr_methods
-#' @param inline Whether the object is printed inline.
-knit_print.shiny.render.function <- function(x, ..., inline = FALSE) {
-  x <- htmltools::as.tags(x, inline = inline)
-  output <- knitr::knit_print(tagList(x))
-  attr(output, "knit_cacheable") <- FALSE
-  attr(output, "knit_meta") <- append(attr(output, "knit_meta"),
-                                      shiny_rmd_warning())
-  output
-}
-
-# Lets us drop reactive expressions directly into a knitr chunk and have the
-# value printed out! Nice for teaching if nothing else.
-#' @rdname knitr_methods
-knit_print.reactive <- function(x, ..., inline = FALSE) {
-  renderFunc <- if (inline) renderText else renderPrint
-  knitr::knit_print(renderFunc({
-    x()
-  }), inline = inline)
-}

R/shinyui.R

@@ -24,7 +24,9 @@ withMathJax <- function(...) {
   )
 }
 
-renderPage <- function(ui, connection, showcase=0, testMode=FALSE) {
+renderPage <- function(ui, showcase=0, testMode=FALSE) {
+  lang <- getLang(ui)
+
   # If the ui is a NOT complete document (created by htmlTemplate()), then do some
   # preprocessing and make sure it's a complete document.
   if (!inherits(ui, "html_document")) {
@@ -38,7 +40,10 @@ renderPage <- function(ui, connection, showcase=0, testMode=FALSE) {
     # Put the body into the default template
     ui <- htmlTemplate(
       system.file("template", "default.html", package = "shiny"),
-      body = ui
+      lang = lang,
+      body = ui,
+      # this template is a complete HTML document
+      document_ = TRUE
     )
   }
 
@@ -46,7 +51,7 @@ renderPage <- function(ui, connection, showcase=0, testMode=FALSE) {
     version <- getOption("shiny.jquery.version", 3)
     if (version == 3) {
       return(htmlDependency(
-        "jquery", "3.4.1",
+        "jquery", "3.5.1",
         c(href = "shared"),
         script = "jquery.min.js"
       ))
@@ -61,23 +66,58 @@ renderPage <- function(ui, connection, showcase=0, testMode=FALSE) {
     stop("Unsupported version of jQuery: ", version)
   }
 
-  shiny_deps <- list(
-    htmlDependency("json2", "2014.02.04", c(href="shared"), script = "json2-min.js"),
-    jquery(),
-    htmlDependency("shiny", utils::packageVersion("shiny"), c(href="shared"),
-      script = if (getOption("shiny.minified", TRUE)) "shiny.min.js" else "shiny.js",
-      stylesheet = "shiny.css")
+  shiny_deps <- c(
+    list(jquery()),
+    shinyDependencies()
   )
 
   if (testMode) {
     # Add code injection listener if in test mode
     shiny_deps[[length(shiny_deps) + 1]] <-
       htmlDependency("shiny-testmode", utils::packageVersion("shiny"),
-        c(href="shared"), script = "shiny-testmode.js")
+                     c(href="shared"), script = "shiny-testmode.js")
   }
 
   html <- renderDocument(ui, shiny_deps, processDep = createWebDependency)
-  writeUTF8(html, con = connection)
+  enc2utf8(paste(collapse = "\n", html))
+}
+
+shinyDependencies <- function() {
+  version <- utils::packageVersion("shiny")
+  list(
+    bootstraplib::bs_dependency_defer(shinyDependencyCSS),
+    htmlDependency(
+      name = "shiny-javascript",
+      version = version,
+      src = c(href = "shared"),
+      script = if (getOption("shiny.minified", TRUE)) "shiny.min.js" else "shiny.js"
+    )
+  )
+}
+
+shinyDependencyCSS <- function(theme) {
+  version <- utils::packageVersion("shiny")
+
+  if (!is_bs_theme(theme)) {
+    return(htmlDependency(
+      name = "shiny-css",
+      version = version,
+      src = c(href = "shared"),
+      stylesheet = "shiny.min.css"
+    ))
+  }
+
+  scss_home <- system.file("www/shared/shiny_scss", package = "shiny")
+  scss_files <- file.path(scss_home, c("bootstrap.scss", "shiny.scss"))
+  scss_files <- lapply(scss_files, sass::sass_file)
+
+  bootstraplib::bs_dependency(
+    input = scss_files,
+    theme = theme,
+    name = "shiny-sass",
+    version = version,
+    cache_key_extra = version
+  )
 }
 
 #' Create a Shiny UI handler
@@ -101,16 +141,18 @@ uiHttpHandler <- function(ui, uiPattern = "^/$") {
 
   force(ui)
 
+  allowed_methods <- "GET"
+  if (is.function(ui)) {
+    allowed_methods <- attr(ui, "http_methods_supported", exact = TRUE) %OR% allowed_methods
+  }
+
   function(req) {
-    if (!identical(req$REQUEST_METHOD, 'GET'))
+    if (!isTRUE(req$REQUEST_METHOD %in% allowed_methods))
       return(NULL)
 
     if (!isTRUE(grepl(uiPattern, req$PATH_INFO)))
       return(NULL)
 
-    textConn <- file(open = "w+")
-    on.exit(close(textConn))
-
     showcaseMode <- .globals$showcaseDefault
     if (.globals$showcaseOverride) {
       mode <- showcaseModeOfReq(req)
@@ -118,7 +160,7 @@ uiHttpHandler <- function(ui, uiPattern = "^/$") {
         showcaseMode <- mode
     }
 
-    testMode <- .globals$testMode %OR% FALSE
+    testMode <- getShinyOption("testmode", default = FALSE)
 
     # Create a restore context using query string
     bookmarkStore <- getShinyOption("bookmarkStore", default = "disable")
@@ -150,8 +192,11 @@ uiHttpHandler <- function(ui, uiPattern = "^/$") {
     if (is.null(uiValue))
       return(NULL)
 
-    renderPage(uiValue, textConn, showcaseMode, testMode)
-    html <- paste(readLines(textConn, encoding = 'UTF-8'), collapse='\n')
-    return(httpResponse(200, content=enc2utf8(html)))
+    if (inherits(uiValue, "httpResponse")) {
+      return(uiValue)
+    } else {
+      html <- renderPage(uiValue, showcaseMode, testMode)
+      return(httpResponse(200, content=html))
+    }
   }
 }

R/shinywrappers.R

@@ -198,7 +198,10 @@ markOutputAttrs <- function(renderFunc, snapshotExclude = NULL,
 #' @param deleteFile Should the file in `func()$src` be deleted after
 #'   it is sent to the client browser? Generally speaking, if the image is a
 #'   temp file generated within `func`, then this should be `TRUE`;
-#'   if the image is not a temp file, this should be `FALSE`.
+#'   if the image is not a temp file, this should be `FALSE`. (For backward
+#'   compatibility reasons, if this argument is missing, a warning will be
+#'   emitted, and if the file is in the temp directory it will be deleted. In
+#'   the future, this warning will become an error.)
 #' @param outputArgs A list of arguments to be passed through to the implicit
 #'   call to [imageOutput()] when `renderImage` is used in an
 #'   interactive R Markdown document.
@@ -271,15 +274,53 @@ markOutputAttrs <- function(renderFunc, snapshotExclude = NULL,
 #' shinyApp(ui, server)
 #' }
 renderImage <- function(expr, env=parent.frame(), quoted=FALSE,
-                        deleteFile=TRUE, outputArgs=list()) {
+                        deleteFile, outputArgs=list()) {
   installExprFunction(expr, "func", env, quoted)
 
+  # missing() must be used directly within the function with the given arg
+  if (missing(deleteFile)) {
+    deleteFile <- NULL
+  }
+
+  # Tracks whether we've reported the `deleteFile` warning yet; we don't want to
+  # do it on every invalidation (though we will end up doing it at least once
+  # per output per session).
+  warned <- FALSE
+
   createRenderFunction(func,
     transform = function(imageinfo, session, name, ...) {
-      # Should the file be deleted after being sent? If .deleteFile not set or if
-      # TRUE, then delete; otherwise don't delete.
-      if (deleteFile) {
-        on.exit(unlink(imageinfo$src))
+      shouldDelete <- deleteFile
+
+      # jcheng 2020-05-08
+      #
+      # Until Shiny 1.5.0, the default for deleteFile was, incredibly, TRUE.
+      # Changing it to default to FALSE might cause existing Shiny apps to pile
+      # up images in their temp directory (for long lived R processes). Not
+      # having a default (requiring explicit value) is the right long-term move,
+      # but would break today's apps.
+      #
+      # Compromise we decided on was to eventually require TRUE/FALSE, but for
+      # now, change the default behavior to only delete temp files; and emit a
+      # warning encouraging people to not rely on the default.
+      if (is.null(shouldDelete)) {
+        shouldDelete <- isTRUE(try(silent = TRUE,
+          file.exists(imageinfo$src) && isTemp(imageinfo$src, mustExist = TRUE)
+        ))
+
+        if (!warned) {
+          warned <<- TRUE
+          warning("The renderImage output named '",
+            getCurrentOutputInfo()$name,
+            "' is missing the deleteFile argument; as of Shiny 1.5.0, you must ",
+            "use deleteFile=TRUE or deleteFile=FALSE. (This warning will ",
+            "become an error in a future version of Shiny.)",
+            call. = FALSE
+          )
+        }
+      }
+
+      if (shouldDelete) {
+        on.exit(unlink(imageinfo$src), add = TRUE)
       }
 
       # If contentType not specified, autodetect based on extension
@@ -295,36 +336,71 @@ renderImage <- function(expr, env=parent.frame(), quoted=FALSE,
     imageOutput, outputArgs)
 }
 
+# TODO: If we ever take a dependency on fs, it'd be great to replace this with
+# fs::path_has_parent().
+isTemp <- function(path, tempDir = tempdir(), mustExist) {
+  if (!isTRUE(mustExist)) {
+    # jcheng 2020-05-11: I added mustExist just to make it totally obvious that
+    # the path must exist. We don't support the case where the file doesn't
+    # exist because it makes normalizePath unusable, and it's a bit scary
+    # security-wise to compare paths without normalization. Using fs would fix
+    # this as it knows how to normalize paths that don't exist.
+    stop("isTemp(mustExist=FALSE) is not implemented")
+  }
 
-#' Printable Output
+  if (mustExist && !file.exists(path)) {
+    stop("path does not exist")
+  }
+
+  if (nchar(tempDir) == 0 || !dir.exists(tempDir)) {
+    # This should never happen, but just to be super paranoid...
+    stop("invalid temp dir")
+  }
+
+  path <- normalizePath(path, winslash = "/", mustWork = mustExist)
+
+  tempDir <- normalizePath(tempDir, winslash = "/", mustWork = TRUE)
+  if (path == tempDir) {
+    return(FALSE)
+  }
+
+  tempDir <- ensure_trailing_slash(tempDir)
+  if (path == tempDir) {
+    return(FALSE)
+  }
+
+  return(substr(path, 1, nchar(tempDir)) == tempDir)
+}
+
+#' Text Output
 #'
-#' Makes a reactive version of the given function that captures any printed
-#' output, and also captures its printable result (unless
-#' [base::invisible()]), into a string. The resulting function is suitable
-#' for assigning to an  `output` slot.
+#' @description
+#' `renderPrint()` prints the result of `expr`, while `renderText()` pastes it
+#' together into a single string. `renderPrint()` is equivalent to [print()];
+#' `renderText()` is equivalent to [cat()]. Both functions capture all other
+#' printed output generated while evaluating `expr`.
 #'
+#' `renderPrint()` is usually paired with [verbatimTextOutput()];
+#' `renderText()` is usually paired with [textOutput()].
+#'
+#' @details
 #' The corresponding HTML output tag can be anything (though `pre` is
 #' recommended if you need a monospace font and whitespace preserved) and should
 #' have the CSS class name `shiny-text-output`.
 #'
-#' The result of executing `func` will be printed inside a
-#' [utils::capture.output()] call.
+#' @return
+#' For `renderPrint()`, note the given expression returns `NULL` then `NULL`
+#' will actually be visible in the output. To display nothing, make your
+#' function return [invisible()].
 #'
-#' Note that unlike most other Shiny output functions, if the given function
-#' returns `NULL` then `NULL` will actually be visible in the output.
-#' To display nothing, make your function return [base::invisible()].
-#'
-#' @param expr An expression that may print output and/or return a printable R
-#'   object.
-#' @param env The environment in which to evaluate `expr`.
+#' @param expr An expression to evaluate.
+#' @param env The environment in which to evaluate `expr`. For expert use only.
 #' @param quoted Is `expr` a quoted expression (with `quote()`)? This
 #'   is useful if you want to save an expression in a variable.
-#' @param width The value for `[options][base::options]('width')`.
+#' @param width Width of printed output.
 #' @param outputArgs A list of arguments to be passed through to the implicit
-#'   call to [verbatimTextOutput()] when `renderPrint` is used
-#'   in an interactive R Markdown document.
-#' @seealso [renderText()] for displaying the value returned from a
-#'   function, instead of the printed output.
+#'   call to [verbatimTextOutput()] or [textOutput()] when the functions are
+#'   used in an interactive RMarkdown document.
 #'
 #' @example res/text-example.R
 #' @export
@@ -400,35 +476,10 @@ createRenderPrintPromiseDomain <- function(width) {
   )
 }
 
-#' Text Output
-#'
-#' Makes a reactive version of the given function that also uses
-#' [base::cat()] to turn its result into a single-element character
-#' vector.
-#'
-#' The corresponding HTML output tag can be anything (though `pre` is
-#' recommended if you need a monospace font and whitespace preserved) and should
-#' have the CSS class name `shiny-text-output`.
-#'
-#' The result of executing `func` will passed to `cat`, inside a
-#' [utils::capture.output()] call.
-#'
-#' @param expr An expression that returns an R object that can be used as an
-#'   argument to `cat`.
-#' @param env The environment in which to evaluate `expr`.
-#' @param quoted Is `expr` a quoted expression (with `quote()`)? This
-#'   is useful if you want to save an expression in a variable.
-#' @param outputArgs A list of arguments to be passed through to the implicit
-#'   call to [textOutput()] when `renderText` is used in an
-#'   interactive R Markdown document.
 #' @param sep A separator passed to `cat` to be appended after each
 #'   element.
-#'
-#' @seealso [renderPrint()] for capturing the print output of a
-#'   function, rather than the returned text value.
-#'
-#' @example res/text-example.R
 #' @export
+#' @rdname renderPrint
 renderText <- function(expr, env=parent.frame(), quoted=FALSE,
                        outputArgs=list(), sep=" ") {
   installExprFunction(expr, "func", env, quoted)
@@ -527,7 +578,7 @@ renderUI <- function(expr, env=parent.frame(), quoted=FALSE,
 #' if (interactive()) {
 #'
 #' ui <- fluidPage(
-#'   downloadLink("downloadData", "Download")
+#'   downloadButton("downloadData", "Download")
 #' )
 #'
 #' server <- function(input, output) {

R/showcase.R

@@ -104,20 +104,18 @@ navTabsDropdown <- function(files) {
 
 tabContentHelper <- function(files, path, language) {
   lapply(files, function(file) {
-    with(tags,
-      div(class=paste("tab-pane",
+      tags$div(class=paste("tab-pane",
                       if (tolower(file) %in% c("app.r", "server.r")) " active"
                       else "",
                       sep=""),
           id=paste(gsub(".", "_", file, fixed=TRUE),
                    "_code", sep=""),
-          pre(class="shiny-code",
+          tags$pre(class="shiny-code",
               # we need to prevent the indentation of <code> ... </code>
               HTML(format(tags$code(
                 class=paste0("language-", language),
                 paste(readUTF8(file.path.ci(path, file)), collapse="\n")
               ), indent = FALSE))))
-    )
   })
 }
 
@@ -222,4 +220,3 @@ showcaseUI <- function(ui) {
     showcaseBody(ui)
   )
 }
-

R/test-module.R

@@ -1,169 +0,0 @@
-
-
-#' Integration testing for Shiny modules or server functions
-#'
-#' Offer a way to test the reactive interactions in Shiny --- either in Shiny
-#' modules or in the server portion of a Shiny application. For more
-#' information, visit [the Shiny Dev Center article on integration
-#' testing](https://shiny.rstudio.com/articles/integration-testing.html).
-#' @param module The module to test
-#' @param expr Test code containing expectations. The test expression will run
-#'   in the module's environment, meaning that the module's parameters (e.g.
-#'   `input`, `output`, and `session`) will be available along with any other
-#'   values created inside of the module.
-#' @param ... Additional arguments to pass to the module function. These
-#'   arguments are processed with [rlang::list2()] and so are
-#'   _[dynamic][rlang::dyn-dots]_.
-#' @return The result of evaluating `expr`.
-#' @include mock-session.R
-#' @rdname testModule
-#' @examples
-#' module <- function(input, output, session, multiplier = 2, prefix = "I am ") {
-#'   myreactive <- reactive({
-#'     input$x * multiplier
-#'   })
-#'   output$txt <- renderText({
-#'     paste0(prefix, myreactive())
-#'   })
-#' }
-#'
-#' # Basic Usage
-#' # -----------
-#' testModule(module, {
-#'   session$setInputs(x = 1)
-#'   # You're also free to use third-party
-#'   # testing packages like testthat:
-#'   #   expect_equal(myreactive(), 2)
-#'   stopifnot(myreactive() == 2)
-#'   stopifnot(output$txt == "I am 2")
-#'
-#'   session$setInputs(x = 2)
-#'   stopifnot(myreactive() == 4)
-#'   stopifnot(output$txt == "I am 4")
-#'   # Any additional arguments, below, are passed along to the module.
-#' }, multiplier = 2)
-#'
-#' # Advanced Usage
-#' # --------------
-#' multiplier_arg_name = "multiplier"
-#' more_args <- list(prefix = "I am ")
-#' testModule(module, {
-#'   session$setInputs(x = 1)
-#'   stopifnot(myreactive() == 2)
-#'   stopifnot(output$txt == "I am 2")
-#'   # !!/:= and !!! from rlang are used below to splice computed arguments
-#'   # into the testModule() argument list.
-#' }, !!multiplier_arg_name := 2, !!!more_args)
-#' @export
-testModule <- function(module, expr, ...) {
-  .testModule(
-    module,
-    quosure = rlang::enquo(expr),
-    dots = rlang::list2(...),
-    env = rlang::caller_env()
-  )
-}
-
-#' @noRd
-#' @importFrom withr with_options
-.testModule <- function(module, quosure, dots, env) {
-  # Modify the module function locally by inserting `session$env <-
-  # environment()` at the beginning of its body. The dynamic environment of the
-  # module function is saved so that it may be referenced after the module
-  # function has returned. The saved dynamic environment is the basis for the
-  # `data` argument of tidy_eval() when used below to evaluate `quosure`, the
-  # test code expression.
-  body(module) <- rlang::expr({
-    session$env <- base::environment()
-    !!!body(module)
-  })
-
-  session <- MockShinySession$new()
-  on.exit(if (!session$isClosed()) session$close())
-  args <- append(dots, list(input = session$input, output = session$output, session = session))
-
-  isolate(
-    withReactiveDomain(
-      session,
-      withr::with_options(list(`shiny.allowoutputreads`=TRUE), {
-        # Assigning to `$returned` causes a flush to happen automatically.
-        session$returned <- do.call(module, args)
-      })
-    )
-  )
-
-  # Evaluate `quosure` in a reactive context, and in the provided `env`, but
-  # with `env` masked by a shallow view of `session$env`, the environment that
-  # was saved when the module function was invoked. flush is not needed before
-  # entering the loop because the first expr executed is `{`.
-  isolate({
-    withReactiveDomain(
-      session,
-      withr::with_options(list(`shiny.allowoutputreads`=TRUE), {
-        rlang::eval_tidy(
-          quosure,
-          data = rlang::as_data_mask(as.list(session$env)),
-          env = env
-        )
-      })
-    )
-  })
-}
-
-#' Test an app's server-side logic
-#' @param appDir The directory root of the Shiny application. If `NULL`, this function
-#'   will work up the directory hierarchy --- starting with the current directory ---
-#'   looking for a directory that contains an `app.R` or `server.R` file.
-#' @rdname testModule
-#' @export
-testServer <- function(expr, appDir=NULL) {
-  if (is.null(appDir)){
-    appDir <- findApp()
-  }
-
-  app <- shinyAppDir(appDir)
-  message("Testing application found in: ", appDir)
-  server <- app$serverFuncSource()
-
-  origwd <- getwd()
-  setwd(appDir)
-  on.exit({ setwd(origwd) }, add=TRUE)
-
-  # Add `session` argument if not present
-  fn_formals <- formals(server)
-  if (! "session" %in% names(fn_formals)) {
-    fn_formals$session <- bquote()
-    formals(server) <- fn_formals
-  }
-
-  # Test the server function almost as if it were a module. `dots` is empty
-  # because server functions never take additional arguments.
-  .testModule(
-    server,
-    quosure = rlang::enquo(expr),
-    dots = list(),
-    env = rlang::caller_env()
-  )
-}
-
-findApp <- function(startDir="."){
-  dir <- normalizePath(startDir)
-
-  # The loop will either return or stop() itself.
-  while (TRUE){
-    if(file.exists.ci(file.path(dir, "app.R")) || file.exists.ci(file.path(dir, "server.R"))){
-      return(dir)
-    }
-
-    # Move up a directory
-    origDir <- dir
-    dir <- dirname(dir)
-
-    # Testing for "root" path can be tricky. OSs differ and on Windows, network shares
-    # might have a \\ prefix. Easier to just see if we got stuck and abort.
-    if (dir == origDir){
-      # We can go no further.
-      stop("No shiny app was found in ", startDir, " or any of its parent directories")
-    }
-  }
-}

R/test-server.R

@@ -0,0 +1,156 @@
+#' Reactive testing for Shiny server functions and modules
+#'
+#' A way to test the reactive interactions in Shiny applications. Reactive
+#' interactions are defined in the server function of applications and in
+#' modules.
+#' @param app A server function (i.e. a function with `input`, `output`,
+#'   and `session`), or a module function (i.e. a function with first
+#'   argument `id` that calls [moduleServer()].
+#'
+#'   You can also provide an app, a path an app, or anything that
+#'   [`as.shiny.appobj()`] can handle.
+#' @param expr Test code containing expectations. The objects from inside the
+#'   server function environment will be made available in the environment of
+#'   the test expression (this is done using a data mask with
+#'   [rlang::eval_tidy()]). This includes the parameters of the server function
+#'   (e.g. `input`, `output`, and `session`), along with any other values
+#'   created inside of the server function.
+#' @param args Additional arguments to pass to the module function. If `app` is
+#'   a module, and no `id` argument is provided, one will be generated and
+#'   supplied automatically.
+#' @param session The [`MockShinySession`] object to use as the [reactive
+#'   domain][shiny::domains]. The same session object is used as the domain both
+#'   during invocation of the server or module under test and during evaluation
+#'   of `expr`.
+#' @include mock-session.R
+#' @rdname testServer
+#' @examples
+#' # Testing a server function  ----------------------------------------------
+#' server <- function(input, output, session) {
+#'   x <- reactive(input$a * input$b)
+#' }
+#'
+#' testServer(server, {
+#'   session$setInputs(a = 2, b = 3)
+#'   stopifnot(x() == 6)
+#' })
+#'
+#'
+#' # Testing a module --------------------------------------------------------
+#' myModuleServer <- function(id, multiplier = 2, prefix = "I am ") {
+#'   moduleServer(id, function(input, output, session) {
+#'     myreactive <- reactive({
+#'       input$x * multiplier
+#'     })
+#'     output$txt <- renderText({
+#'       paste0(prefix, myreactive())
+#'     })
+#'   })
+#' }
+#'
+#' testServer(myModuleServer, args = list(multiplier = 2), {
+#'   session$setInputs(x = 1)
+#'   # You're also free to use third-party
+#'   # testing packages like testthat:
+#'   #   expect_equal(myreactive(), 2)
+#'   stopifnot(myreactive() == 2)
+#'   stopifnot(output$txt == "I am 2")
+#'
+#'   session$setInputs(x = 2)
+#'   stopifnot(myreactive() == 4)
+#'   stopifnot(output$txt == "I am 4")
+#'   # Any additional arguments, below, are passed along to the module.
+#' })
+#' @export
+testServer <- function(app = NULL, expr, args = list(), session = MockShinySession$new()) {
+  require(shiny)
+
+  if (!is.null(getDefaultReactiveDomain()))
+    stop("testServer() is for use only within tests and may not indirectly call itself.")
+
+  on.exit(if (!session$isClosed()) session$close(), add = TRUE)
+  quosure <- rlang::enquo(expr)
+
+  if (isModuleServer(app)) {
+    if (!("id" %in% names(args)))
+      args[["id"]] <- session$genId()
+    # app is presumed to be a module, and modules may take additional arguments,
+    # so splice in any args.
+    withMockContext(session, rlang::exec(app, !!!args))
+
+    # If app is a module, then we must use both the module function's immediate
+    # environment and also its enclosing environment to construct the mask.
+    parent_clone <- rlang::env_clone(parent.env(session$env))
+    clone <- rlang::env_clone(session$env, parent_clone)
+    mask <- rlang::new_data_mask(clone, parent_clone)
+    withMockContext(session, rlang::eval_tidy(quosure, mask, rlang::caller_env()))
+    return(invisible())
+  }
+
+  if (is.null(app)) {
+    path <- findEnclosingApp(".")
+    app <- shinyAppDir(path)
+  } else if (isServer(app)) {
+    app <- shinyApp(fluidPage(), app)
+  } else {
+    app <- as.shiny.appobj(app)
+  }
+
+  if (!is.null(app$onStart))
+    app$onStart()
+  if (!is.null(app$onStop))
+    on.exit(app$onStop(), add = TRUE)
+
+  server <- app$serverFuncSource()
+  if (!"session" %in% names(formals(server)))
+    stop("Tested application server functions must declare input, output, and session arguments.")
+  if (length(args))
+    stop("Arguments were provided to a server function.")
+
+  body(server) <- rlang::expr({
+    session$setEnv(base::environment())
+    !!body(server)
+  })
+  withMockContext(session,
+    server(input = session$input, output = session$output, session = session)
+  )
+
+  # # If app is a server, we use only the server function's immediate
+  # # environment to construct the mask.
+  mask <- rlang::new_data_mask(rlang::env_clone(session$env))
+  withMockContext(session, {
+    rlang::eval_tidy(quosure, mask, rlang::caller_env())
+  })
+  invisible()
+}
+
+withMockContext <- function(session, expr) {
+  isolate(
+    withReactiveDomain(session, {
+      withr::with_options(list(`shiny.allowoutputreads` = TRUE), {
+        # Sets a cache for renderCachedPlot() with cache = "app" to use.
+        shinyOptions("cache" = session$appcache)
+        expr
+      })
+    })
+  )
+}
+
+
+# Helpers -----------------------------------------------------------------
+
+isModuleServer <- function(x) {
+  is.function(x) && names(formals(x))[[1]] == "id"
+}
+
+isServer <- function(x) {
+  if (!is.function(x)) {
+    return(FALSE)
+  }
+
+  if (length(formals(x)) < 3) {
+    return(FALSE)
+  }
+
+  identical(names(formals(x))[1:3], c("input", "output", "session"))
+}

R/test.R

@@ -1,11 +1,48 @@
-
-#' Check to see if the given text is a shinytest
-#' Scans for the magic string of `app <- ShinyDriver$new(` as an indicator that this is a shinytest.
-#' Brought in from shinytest to avoid having to export this function.
+#' Creates and returns run result data frame.
+#'
+#' @param file Name of the test runner file, a character vector of length 1.
+#' @param pass Whether or not the test passed, a logical vector of length 1.
+#' @param result Value (wrapped in a list) obtained by evaluating `file`.
+#'   This can also by any errors signaled when evaluating the `file`.
+#'
+#' @return A 1-row data frame representing a single test run. `result` and
+#'   is a "list column", or a column that contains list elements.
 #' @noRd
-isShinyTest <- function(text){
-  lines <- grepl("app\\s*<-\\s*ShinyDriver\\$new\\(", text, perl=TRUE)
-  any(lines)
+result_row <- function(file, pass, result) {
+  stopifnot(is.list(result))
+  df <- data.frame(
+    file = file,
+    pass = pass,
+    result = I(result),
+    stringsAsFactors = FALSE
+  )
+  class(df) <- c("shiny_runtests", class(df))
+  df
+}
+
+#' Check to see if the given directory contains at least one script, and that
+#' all scripts in the directory are shinytest scripts.
+#' Scans for the magic string of `app <- ShinyDriver$new(` as an indicator that
+#' this is a shinytest.
+#' @noRd
+is_legacy_shinytest_dir <- function(path){
+  is_shinytest_script <- function(file) {
+    if (!file.exists(file)) {
+      return(FALSE)
+    }
+
+    text <- readLines(file, warn = FALSE)
+    any(
+      grepl("app\\s*<-\\s*ShinyDriver\\$new\\(", text, perl=TRUE)
+    )
+  }
+
+  files <- dir(path, full.names = TRUE)
+  files <- files[!file.info(files)$isdir]
+  if (length(files) == 0) {
+    return(FALSE)
+  }
+  all(vapply(files, is_shinytest_script, logical(1)))
 }
 
 #' Runs the tests associated with this Shiny app
@@ -18,90 +55,135 @@ isShinyTest <- function(text){
 #' @param filter If not `NULL`, only tests with file names matching this regular
 #'   expression will be executed. Matching is performed on the file name
 #'   including the extension.
+#' @param assert Logical value which determines if an error should be thrown if any error is captured.
+#' @param envir Parent testing environment in which to base the individual testing environments.
+#'
+#' @return A data frame classed with the supplemental class `"shiny_runtests"`.
+#'   The data frame has the following columns:
+#'
+#' | **Name** | **Type** | **Meaning** |
+#' | :-- | :-- | :-- |
+#' | `file` | `character(1)` | File name of the runner script in `tests/` that was sourced. |
+#' | `pass` | `logical(1)` | Whether or not the runner script signaled an error when sourced. |
+#' | `result` | any or `NA` | The return value of the runner |
 #'
 #' @details Historically, [shinytest](https://rstudio.github.io/shinytest/)
-#'   recommended placing tests at the top-level of the `tests/` directory. In
-#'   order to support that model, `testApp` first checks to see if the `.R`
-#'   files in the `tests/` directory are all shinytests; if so, just calls out
-#'   to [shinytest::testApp()].
+#'   recommended placing tests at the top-level of the `tests/` directory.
+#'   This older folder structure is not supported by runTests.
+#'   Please see [shinyAppTemplate()] for more details.
 #' @export
-runTests <- function(appDir=".", filter=NULL){
+runTests <- function(
+  appDir = ".",
+  filter = NULL,
+  assert = TRUE,
+  envir = globalenv()
+) {
+  # similar to runApp()
+  # Allows shiny's functions to be available in the UI, server, and test code
   require(shiny)
 
   testsDir <- file.path(appDir, "tests")
-  if (!dirExists(testsDir)){
+  if (!dirExists(testsDir)) {
     stop("No tests directory found: ", testsDir)
   }
   runners <- list.files(testsDir, pattern="\\.r$", ignore.case = TRUE)
 
-  if (length(runners) == 0){
+  if (length(runners) == 0) {
     message("No test runners found in ", testsDir)
-    return(structure(list(result=NA, files=list()), class="shinytestrun"))
+    return(result_row(character(0), logical(0), list()))
   }
 
-  if (!is.null(filter)){
+  if (!is.null(filter)) {
     runners <- runners[grepl(filter, runners)]
   }
-  if (length(runners) == 0){
+  if (length(runners) == 0) {
     stop("No test runners matched the given filter: '", filter, "'")
   }
 
-  # Inspect each runner to see if it appears to be a shinytest
-  isST <- vapply(runners, function(r){
-    text <- readLines(file.path(testsDir, r), warn = FALSE)
-    isShinyTest(text)
-  }, logical(1))
-
-  if (all(isST)){
-    # just call out to shinytest
-    # We don't need to message/warn here since shinytest already does it.
-    if (!requireNamespace("shinytest", quietly=TRUE) ){
-      stop("It appears that the .R files in ", testsDir,
-           " are all shinytests, but shinytest is not installed.")
-    }
-
-    if (!getOption("shiny.autoload.r", TRUE)) {
-      warning("You've disabled `shiny.autoload.r` via an option but this is not passed through to shinytest. Consider using a _disable_autoload.R file as described at https://rstd.io/shiny-autoload")
-    }
-
-    sares <- shinytest::testApp(appDir)
-    res <- list()
-    lapply(sares$results, function(r){
-      e <- NA_character_
-      if (!r$pass){
-        e <- simpleError("Unknown shinytest error")
-      }
-      res[[r$name]] <<- e
-    })
-    return(structure(list(result=all(is.na(res)), files=res), class="shinytestrun"))
+  # See the @details section of the runTests() docs above for why this branch exists.
+  if (is_legacy_shinytest_dir(testsDir)) {
+    stop(
+      "It appears that the .R files in ", testsDir, " are all shinytests.",
+      " This is not supported by `shiny::runTests()`.",
+      "\nPlease see `?shinytest::migrateShinytestDir` to migrate your shinytest file structure to the new format (requires shinytest 1.4.0 or above).",
+      "\nSee `?shiny::shinyAppTemplate` for an example of the new testing file structure."
+    )
   }
 
-  testenv <- new.env(parent=globalenv())
-  renv <- new.env(parent=testenv)
-  if (getOption("shiny.autoload.r", TRUE)) {
-    loadSupport(appDir, renv=renv, globalrenv=testenv)
-  } else if (file.exists.ci(file.path(appDir, "server.R"))){
-    # then check for global.R to load
-    if (file.exists(file.path.ci(appDir, "global.R"))){
-      sourceUTF8(file.path.ci(appDir, "global.R"))
-    }
-  }
-
-  oldwd <- getwd()
-  on.exit({
-    setwd(oldwd)
-  }, add=TRUE)
-
-  setwd(testsDir)
+  renv <- new.env(parent = envir)
 
   # Otherwise source all the runners -- each in their own environment.
-  fileResults <- list()
-  lapply(runners, function(r){
-    env <- new.env(parent=renv)
-    tryCatch({sourceUTF8(r, envir=env); fileResults[[r]] <<- NA_character_}, error=function(e){
-      fileResults[[r]] <<- e
-    })
-  })
+  ret <- do.call(rbind, lapply(runners, function(r) {
+    pass <- FALSE
+    result <-
+      tryCatch({
+        env <- new.env(parent = renv)
+        withr::with_dir(testsDir, {
+          ret <- sourceUTF8(r, envir = env)
+        })
+        pass <- TRUE
+        ret
+      }, error = function(err) {
+        message("Error in ", r, "\n", err)
+        err
+      })
+    result_row(file.path(testsDir, r), pass, list(result))
+  }))
 
-  return(structure(list(result=all(is.na(fileResults)), files=fileResults), class="shinytestrun"))
+  if (isTRUE(assert)) {
+    if (!all(ret$pass)) {
+      stop("Shiny App Test Failures detected in\n", paste0("* ", runtest_pretty_file(ret$file[!ret$pass]), collapse = "\n"), call. = FALSE)
+    }
+  }
+
+  ret
+}
+
+
+runtest_pretty_file <- function(f) {
+  test_folder <- dirname(f)
+  app_folder <- dirname(test_folder)
+  file.path(
+    basename(app_folder),
+    basename(test_folder),
+    basename(f)
+  )
+}
+
+
+#' @export
+print.shiny_runtests <- function(x, ..., reporter = "summary") {
+
+  cat("Shiny App Test Results\n")
+
+
+  if (any(x$pass)) {
+    # TODO in future... use clisymbols::symbol$tick and crayon green
+    cat("* Success\n")
+    mapply(
+      x$file,
+      x$pass,
+      x$result,
+      FUN = function(file, pass, result) {
+        if (!pass) return()
+        # print(result)
+        cat("  - ", runtest_pretty_file(file), "\n", sep = "")
+      }
+    )
+  }
+  if (any(!x$pass)) {
+    # TODO in future... use clisymbols::symbol$cross and crayon red
+    cat("* Failure\n")
+    mapply(
+      x$file,
+      x$pass,
+      x$result,
+      FUN = function(file, pass, result) {
+        if (pass) return()
+        cat("  - ", runtest_pretty_file(file), "\n", sep = "")
+      }
+    )
+  }
+
+  invisible(x)
 }

R/update-input.R

@@ -1,8 +1,7 @@
 #' Change the value of a text input on the client
 #'
 #' @template update-input
-#' @param value The value to set for the input object.
-#' @param placeholder The placeholder to set for the input object.
+#' @inheritParams textInput
 #'
 #' @seealso [textInput()]
 #'
@@ -82,7 +81,7 @@ updateTextAreaInput <- updateTextInput
 #' Change the value of a checkbox input on the client
 #'
 #' @template update-input
-#' @param value The value to set for the input object.
+#' @inheritParams checkboxInput
 #'
 #' @seealso [checkboxInput()]
 #'
@@ -116,8 +115,7 @@ updateCheckboxInput <- function(session, inputId, label = NULL, value = NULL) {
 #' Change the label or icon of an action button on the client
 #'
 #' @template update-input
-#' @param icon The icon to set for the input object. To remove the
-#' current icon, use `icon=character(0)`.
+#' @inheritParams actionButton
 #'
 #' @seealso [actionButton()]
 #'
@@ -126,13 +124,15 @@ updateCheckboxInput <- function(session, inputId, label = NULL, value = NULL) {
 #' if (interactive()) {
 #'
 #' ui <- fluidPage(
-#'   actionButton("update", "Update other buttons"),
+#'   actionButton("update", "Update other buttons and link"),
 #'   br(),
 #'   actionButton("goButton", "Go"),
 #'   br(),
 #'   actionButton("goButton2", "Go 2", icon = icon("area-chart")),
 #'   br(),
-#'   actionButton("goButton3", "Go 3")
+#'   actionButton("goButton3", "Go 3"),
+#'   br(),
+#'   actionLink("goLink", "Go Link")
 #' )
 #'
 #' server <- function(input, output, session) {
@@ -153,28 +153,32 @@ updateCheckboxInput <- function(session, inputId, label = NULL, value = NULL) {
 #'     # unchaged and changes its label
 #'     updateActionButton(session, "goButton3",
 #'       label = "New label 3")
+#'
+#'     # Updates goLink's label and icon
+#'     updateActionButton(session, "goLink",
+#'       label = "New link label",
+#'       icon = icon("link"))
 #'   })
 #' }
 #'
 #' shinyApp(ui, server)
 #' }
+#' @rdname updateActionButton
 #' @export
 updateActionButton <- function(session, inputId, label = NULL, icon = NULL) {
   if (!is.null(icon)) icon <- as.character(validateIcon(icon))
   message <- dropNulls(list(label=label, icon=icon))
   session$sendInputMessage(inputId, message)
 }
+#' @rdname updateActionButton
+#' @export
+updateActionLink <- updateActionButton
 
 
 #' Change the value of a date input on the client
 #'
 #' @template update-input
-#' @param value The desired date value. Either a Date object, or a string in
-#'   `yyyy-mm-dd` format. Supply `NA` to clear the date.
-#' @param min The minimum allowed date. Either a Date object, or a string in
-#'   `yyyy-mm-dd` format.
-#' @param max The maximum allowed date. Either a Date object, or a string in
-#'   `yyyy-mm-dd` format.
+#' @inheritParams dateInput
 #'
 #' @seealso [dateInput()]
 #'
@@ -217,14 +221,7 @@ updateDateInput <- function(session, inputId, label = NULL, value = NULL,
 #' Change the start and end values of a date range input on the client
 #'
 #' @template update-input
-#' @param start The start date. Either a Date object, or a string in
-#'   `yyyy-mm-dd` format. Supplying `NA` clears the start date.
-#' @param end The end date. Either a Date object, or a string in
-#'   `yyyy-mm-dd` format. Supplying `NA` clears the end date.
-#' @param min The minimum allowed date. Either a Date object, or a string in
-#'   `yyyy-mm-dd` format.
-#' @param max The maximum allowed date. Either a Date object, or a string in
-#'   `yyyy-mm-dd` format.
+#' @inheritParams dateRangeInput
 #'
 #' @seealso [dateRangeInput()]
 #'
@@ -279,7 +276,7 @@ updateDateRangeInput <- function(session, inputId, label = NULL,
 #'   `shinyServer`.
 #' @param inputId The id of the `tabsetPanel`, `navlistPanel`,
 #' or `navbarPage` object.
-#' @param selected The name of the tab to make active.
+#' @inheritParams tabsetPanel
 #'
 #' @seealso [tabsetPanel()], [navlistPanel()],
 #' [navbarPage()]
@@ -328,10 +325,7 @@ updateNavlistPanel <- updateTabsetPanel
 #' Change the value of a number input on the client
 #'
 #' @template update-input
-#' @param value The value to set for the input object.
-#' @param min Minimum value.
-#' @param max Maximum value.
-#' @param step Step size.
+#' @inheritParams numericInput
 #'
 #' @seealso [numericInput()]
 #'
@@ -378,12 +372,7 @@ updateNumericInput <- function(session, inputId, label = NULL, value = NULL,
 #' Change the value of a slider input on the client.
 #'
 #' @template update-input
-#' @param value The value to set for the input object.
-#' @param min Minimum value.
-#' @param max Maximum value.
-#' @param step Step size.
-#' @param timeFormat Date and POSIXt formatting.
-#' @param timezone The timezone offset for POSIXt objects.
+#' @inheritParams sliderInput
 #'
 #' @seealso [sliderInput()]
 #'
@@ -606,7 +595,7 @@ updateSelectInput <- function(session, inputId, label = NULL, choices = NULL,
                               selected = NULL) {
   choices <- if (!is.null(choices)) choicesWithNames(choices)
   if (!is.null(selected)) selected <- as.character(selected)
-  options <- if (!is.null(choices)) selectOptions(choices, selected)
+  options <- if (!is.null(choices)) selectOptions(choices, selected, inputId, FALSE)
   message <- dropNulls(list(label = label, options = options, value = selected))
   session$sendInputMessage(inputId, message)
 }

R/utils.R

@@ -210,6 +210,16 @@ sortByName <- function(x) {
   x[order(names(x))]
 }
 
+# Sort a vector. If a character vector, sort using C locale, which is consistent
+# across platforms. Note that radix sort uses C locale according to ?sort.
+sort_c <- function(x, ...) {
+  # Use UTF-8 encoding, because if encoding is "unknown" for non-ASCII
+  # characters, the sort() will throw an error.
+  if (is.character(x))
+    x <- enc2utf8(x)
+  sort(x, method = "radix", ...)
+}
+
 # Wrapper around list2env with a NULL check. In R <3.2.0, if an empty unnamed
 # list is passed to list2env(), it errors. But an empty named list is OK. For
 # R >=3.2.0, this wrapper is not necessary.
@@ -316,6 +326,15 @@ resolve <- function(dir, relpath) {
   return(abs.path)
 }
 
+# Given a string, make sure it has a trailing slash.
+ensure_trailing_slash <- function(path) {
+  if (!grepl("/$", path)) {
+    path <- paste0(path, "/")
+  }
+  path
+}
+
+
 isWindows <- function() .Platform$OS.type == 'windows'
 
 # This is a wrapper for download.file and has the same interface.
@@ -1575,7 +1594,6 @@ URLencode <- function(value, reserved = FALSE) {
 # so that strings like "2016-08-9" are expanded to "2016-08-09"
 dateYMD <- function(date = NULL, argName = "value") {
   if (!length(date)) return(NULL)
-  if (length(date) > 1) warning("Expected `", argName, "` to be of length 1.")
   tryCatch(date <- format(as.Date(date), "%Y-%m-%d"),
     error = function(e) {
       warning(
@@ -1812,3 +1830,65 @@ cat_line <- function(...) {
   cat(paste(..., "\n", collapse = ""))
 }
 
+select_menu <- function(choices, title = NULL, msg = "Enter one or more numbers (with spaces), or an empty line to exit: \n")
+{
+  if (!is.null(title)) {
+    cat(title, "\n", sep = "")
+  }
+  nc <- length(choices)
+  op <- paste0(format(seq_len(nc)), ": ", choices)
+  fop <- format(op)
+  cat("", fop, "", sep = "\n")
+  repeat {
+    answer <- readline(msg)
+    answer <- strsplit(answer, "[ ,]+")[[1]]
+    if (all(answer %in% seq_along(choices))) {
+      return(choices[as.integer(answer)])
+    }
+  }
+}
+
+#' @noRd
+isAppDir <- function(path) {
+
+  if (file.exists(file.path.ci(path, "app.R")))
+    return(TRUE)
+
+  if (file.exists(file.path.ci(path, "server.R"))
+      && file.exists(file.path.ci(path, "ui.R")))
+    return(TRUE)
+
+  FALSE
+}
+
+# Borrowed from rprojroot which borrowed from devtools
+#' @noRd
+is_root <- function(path) {
+  identical(
+    normalizePath(path, winslash = "/"),
+    normalizePath(dirname(path), winslash = "/")
+  )
+}
+
+#' @noRd
+findEnclosingApp <- function(path = ".") {
+  orig_path <- path
+  path <- normalizePath(path, winslash = "/", mustWork = TRUE)
+  repeat {
+    if (isAppDir(path))
+      return(path)
+    if (is_root(path))
+      stop("Shiny app not found at ", orig_path, " or in any parent directory.")
+    path <- dirname(path)
+  }
+}
+
+# Check if a package is installed, and if version is specified,
+# that we have at least that version
+is_available <- function(package, version = NULL) {
+  installed <- nzchar(system.file(package = package))
+  if (is.null(version)) {
+    return(installed)
+  }
+  installed && isTRUE(utils::packageVersion(package) >= version)
+}

R/viewer.R

@@ -0,0 +1,56 @@
+
+#' Viewer options
+#'
+#' Use these functions to control where the gadget is displayed in RStudio (or
+#' other R environments that emulate RStudio's viewer pane/dialog APIs). If
+#' viewer APIs are not available in the current R environment, then the gadget
+#' will be displayed in the system's default web browser (see
+#' [utils::browseURL()]).
+#'
+#' @return A function that takes a single `url` parameter, suitable for
+#'   passing as the `viewer` argument of [runGadget()].
+#'
+#' @rdname viewer
+#' @name viewer
+NULL
+
+#' @param minHeight The minimum height (in pixels) desired to show the gadget in
+#'   the viewer pane. If a positive number, resize the pane if necessary to show
+#'   at least that many pixels. If `NULL`, use the existing viewer pane
+#'   size. If `"maximize"`, use the maximum available vertical space.
+#' @rdname viewer
+#' @export
+paneViewer <- function(minHeight = NULL) {
+  viewer <- getOption("viewer")
+  if (is.null(viewer)) {
+    utils::browseURL
+  } else {
+    function(url) {
+      viewer(url, minHeight)
+    }
+  }
+}
+
+#' @param dialogName The window title to display for the dialog.
+#' @param width,height The desired dialog width/height, in pixels.
+#' @rdname viewer
+#' @export
+dialogViewer <- function(dialogName, width = 600, height = 600) {
+  viewer <- getOption("shinygadgets.showdialog")
+  if (is.null(viewer)) {
+    utils::browseURL
+  } else {
+    function(url) {
+      viewer(dialogName, url, width = width, height = height)
+    }
+  }
+}
+
+#' @param browser See [utils::browseURL()].
+#' @rdname viewer
+#' @export
+browserViewer <- function(browser = getOption("browser")) {
+  function(url) {
+    utils::browseURL(url, browser = browser)
+  }
+}

README.md

@@ -1,8 +1,11 @@
-# Shiny
+# shiny <img src="man/figures/logo.png" align="right" width=120 height=139 alt="" />
 
-*Travis:* [![Travis Build Status](https://travis-ci.org/rstudio/shiny.svg?branch=master)](https://travis-ci.org/rstudio/shiny)
+<!-- badges: start -->
+[![CRAN](https://www.r-pkg.org/badges/version/shiny)](https://CRAN.R-project.org/package=shiny)
+[![R build status](https://github.com/rstudio/shiny/workflows/R-CMD-check/badge.svg)](https://github.com/rstudio/shiny/actions)
+[![RStudio community](https://img.shields.io/badge/community-shiny-blue?style=social&logo=rstudio&logoColor=75AADB)](https://community.rstudio.com/new-topic?category=shiny&tags=shiny)
 
-*AppVeyor:* [![AppVeyor Build Status](https://ci.appveyor.com/api/projects/status/github/rstudio/shiny?branch=master&svg=true)](https://ci.appveyor.com/project/rstudio/shiny)
+<!-- badges: end -->
 
 Shiny is a new package from RStudio that makes it incredibly easy to build interactive web applications with R.
 
@@ -34,9 +37,9 @@ install.packages("shiny")
 To install the latest development builds directly from GitHub, run this instead:
 
 ```r
-if (!require("devtools"))
-  install.packages("devtools")
-devtools::install_github("rstudio/shiny")
+if (!require("remotes"))
+  install.packages("remotes")
+remotes::install_github("rstudio/shiny")
 ```
 
 ## Getting Started

appveyor.yml

@@ -1,54 +0,0 @@
-# DO NOT CHANGE the "init" and "install" sections below
-
-# Download script file from GitHub
-init:
-  ps: |
-        $ErrorActionPreference = "Stop"
-        Invoke-WebRequest http://raw.github.com/krlmlr/r-appveyor/master/scripts/appveyor-tool.ps1 -OutFile "..\appveyor-tool.ps1"
-        Import-Module '..\appveyor-tool.ps1'
-
-install:
-  ps: Bootstrap
-
-cache:
-  # Bust library cache every time the description file changes
-  #   as appveyor cache can not be busted manually
-  # This helps get around errors such as "can't update curl because it's already loaded"
-  #  when trying to update the existing cache
-  # PR: https://github.com/rstudio/shiny/pull/2722
-  - C:\RLibrary -> DESCRIPTION
-
-# Adapt as necessary starting from here
-
-build_script:
-  - travis-tool.sh install_deps
-
-test_script:
-  - travis-tool.sh run_tests
-
-on_failure:
-  - 7z a failure.zip *.Rcheck\*
-  - appveyor PushArtifact failure.zip
-
-artifacts:
-  - path: '*.Rcheck\**\*.log'
-    name: Logs
-
-  - path: '*.Rcheck\**\*.out'
-    name: Logs
-
-  - path: '*.Rcheck\**\*.fail'
-    name: Logs
-
-  - path: '*.Rcheck\**\*.Rout'
-    name: Logs
-
-  - path: '\*_*.tar.gz'
-    name: Bits
-
-  - path: '\*_*.zip'
-    name: Bits
-
-environment:
-  global:
-    USE_RTOOLS: true

inst/app_template/R/example-module.R

@@ -0,0 +1,27 @@
+exampleModuleUI <- function(id, label = "Counter") {
+  # All uses of Shiny input/output IDs in the UI must be namespaced,
+  # as in ns("x").
+  ns <- NS(id)
+  tagList(
+    actionButton(ns("button"), label = label),
+    verbatimTextOutput(ns("out"))
+  )
+}
+
+exampleModuleServer <- function(id) {
+  # moduleServer() wraps a function to create the server component of a
+  # module.
+  moduleServer(
+    id,
+    function(input, output, session) {
+      count <- reactiveVal(0)
+      observeEvent(input$button, {
+        count(count() + 1)
+      })
+      output$out <- renderText({
+        count()
+      })
+      count
+    }
+  )
+}

inst/app_template/R/example.R

@@ -0,0 +1,5 @@
+# Given a numeric vector, convert to strings, sort, and convert back to
+# numeric.
+lexical_sort <- function(x) {
+  as.numeric(sort(as.character(x)))
+}

inst/app_template/app.R

@@ -0,0 +1,56 @@
+ui <- fluidPage(
+{{
+# These blocks of code are processed with htmlTemplate()
+if (isTRUE(module)) {
+'  # ======== Modules ========
+  # exampleModuleUI is defined in R/example-module.R
+  wellPanel(
+    h2("Modules example"),
+    exampleModuleUI("examplemodule1", "Click counter #1"),
+    exampleModuleUI("examplemodule2", "Click counter #2")
+  ),
+  # =========================
+'
+}
+}}
+  wellPanel(
+    h2("Sorting example"),
+    sliderInput("size", "Data size", min = 5, max = 20, value = 10),
+{{
+if (isTRUE(rdir)) {
+  '    div("Lexically sorted sequence:"),'
+} else {
+  '    div("Sorted sequence:"),'
+}
+}}
+    verbatimTextOutput("sequence")
+  )
+)
+
+server <- function(input, output, session) {
+{{
+if (isTRUE(module)) {
+'  # ======== Modules ========
+  # exampleModuleServer is defined in R/example-module.R
+  exampleModuleServer("examplemodule1")
+  exampleModuleServer("examplemodule2")
+  # =========================
+'
+}
+}}
+  data <- reactive({
+{{
+if (isTRUE(rdir)) {
+'    # lexical_sort from R/example.R
+    lexical_sort(seq_len(input$size))'
+} else {
+'    sort(seq_len(input$size))'
+}
+}}
+  })
+  output$sequence <- renderText({
+    paste(data(), collapse = " ")
+  })
+}
+
+shinyApp(ui, server)

inst/app_template/tests/shinytest.R

@@ -0,0 +1,3 @@
+library(shinytest)
+shinytest::testApp("../")
+

inst/app_template/tests/shinytest/mytest.R

@@ -0,0 +1,12 @@
+app <- ShinyDriver$new("../../")
+app$snapshotInit("mytest")
+
+app$snapshot()
+{{
+if (isTRUE(module)) {
+'
+app$setInputs(`examplemodule1-button` = "click")
+app$setInputs(`examplemodule1-button` = "click")
+app$snapshot()'
+}
+}}

inst/app_template/tests/testthat.R

@@ -0,0 +1,9 @@
+library(testthat)
+
+test_dir(
+  "./testthat",
+  # Run in the app's environment containing all support methods.
+  env = shiny::loadSupport(),
+  # Display the regular progress output and throw an error if any test error is found
+  reporter = c("progress", "fail")
+)

inst/app_template/tests/testthat/test-examplemodule.R

@@ -0,0 +1,18 @@
+context("exampleModuleServer")
+
+# See ?testServer for more information
+testServer(exampleModuleServer, {
+  # Set initial value of a button
+  session$setInputs(button = 0)
+
+  # Check the value of the reactiveVal `count()`
+  expect_equal(count(), 1)
+  # Check the value of the renderText()
+  expect_equal(output$out, "1")
+
+  # Simulate a click
+  session$setInputs(button = 1)
+
+  expect_equal(count(), 2)
+  expect_equal(output$out, "2")
+})

inst/app_template/tests/testthat/test-server.R

@@ -0,0 +1,20 @@
+context("app")
+
+testServer(expr = {
+  # Set the `size` slider and check the output
+  session$setInputs(size = 6)
+  expect_equal(output$sequence, "1 2 3 4 5 6")
+{{
+if (isTRUE(rdir)) {
+'
+  session$setInputs(size = 12)
+  expect_equal(output$sequence, "1 10 11 12 2 3 4 5 6 7 8 9")
+'
+} else {
+'
+  session$setInputs(size = 12)
+  expect_equal(output$sequence, "1 2 3 4 5 6 7 8 9 10 11 12")
+'
+}
+}}
+})

inst/app_template/tests/testthat/test-sort.R

@@ -0,0 +1,7 @@
+# Test the lexical_sort function from R/example.R
+context("sort")
+
+test_that("Lexical sorting works", {
+  expect_equal(lexical_sort(c(1, 2, 3)), c(1, 2, 3))
+  expect_equal(lexical_sort(c(1, 2, 3, 13, 11, 21)), c(1, 11, 13, 2, 21, 3))
+})

inst/template/default.html

@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html>
+<html{{ if (isTRUE(nzchar(lang))) paste0(" lang=\"", lang, "\"") }}>
 <head>
 {{ headContent() }}
 </head>

inst/template/error.html

@@ -0,0 +1,13 @@
+<html>
+
+<head lang = "en">
+  <title>An error has occurred</title>
+</head>
+
+<body>
+
+<h1>An error has occurred!</h1>
+<p>{{message}}</p>
+
+</body>
+</html>

inst/www/shared/bootstrap/accessibility/css/bootstrap-accessibility.css

@@ -0,0 +1 @@
+.btn:focus{outline:dotted 2px #000}div.active:focus{outline:dotted 1px #000}a:focus{outline:dotted 1px #000}.close:hover,.close:focus{outline:dotted 1px #000}.nav>li>a:hover,.nav>li>a:focus{outline:dotted 1px #000}.carousel-indicators li,.carousel-indicators li.active{height:18px;width:18px;border-width:2px;position:relative;box-shadow:0px 0px 0px 1px #808080}.carousel-indicators.active li{background-color:rgba(100,149,253,0.6)}.carousel-indicators.active li.active{background-color:white}.carousel-tablist-highlight{display:block;position:absolute;outline:2px solid transparent;background-color:transparent;box-shadow:0px 0px 0px 1px transparent}.carousel-tablist-highlight.focus{outline:2px solid #6495ED;background-color:rgba(0,0,0,0.4)}a.carousel-control:focus{outline:2px solid #6495ED;background-image:linear-gradient(to right, transparent 0px, rgba(0,0,0,0.5) 100%);box-shadow:0px 0px 0px 1px #000000}.carousel-pause-button{position:absolute;top:-30em;left:-300em;display:block}.carousel-pause-button.focus{top:0.5em;left:0.5em}.carousel:hover .carousel-caption,.carousel.contrast .carousel-caption{background-color:rgba(0,0,0,0.5);z-index:10}.alert-success{color:#2d4821}.alert-info{color:#214c62}.alert-warning{color:#6c4a00;background-color:#f9f1c6}.alert-danger{color:#d2322d}.alert-danger:hover{color:#a82824}

inst/www/shared/bootstrap/shim/html5shiv.min.js

@@ -1,7 +0,0 @@
-/**
-* @preserve HTML5 Shiv 3.7.2 | @afarkas @jdalton @jon_neal @rem | MIT/GPL2 Licensed
-*/
-// Only run this code in IE 8
-if (!!window.navigator.userAgent.match("MSIE 8")) {
-!function(a,b){function c(a,b){var c=a.createElement("p"),d=a.getElementsByTagName("head")[0]||a.documentElement;return c.innerHTML="x<style>"+b+"</style>",d.insertBefore(c.lastChild,d.firstChild)}function d(){var a=t.elements;return"string"==typeof a?a.split(" "):a}function e(a,b){var c=t.elements;"string"!=typeof c&&(c=c.join(" ")),"string"!=typeof a&&(a=a.join(" ")),t.elements=c+" "+a,j(b)}function f(a){var b=s[a[q]];return b||(b={},r++,a[q]=r,s[r]=b),b}function g(a,c,d){if(c||(c=b),l)return c.createElement(a);d||(d=f(c));var e;return e=d.cache[a]?d.cache[a].cloneNode():p.test(a)?(d.cache[a]=d.createElem(a)).cloneNode():d.createElem(a),!e.canHaveChildren||o.test(a)||e.tagUrn?e:d.frag.appendChild(e)}function h(a,c){if(a||(a=b),l)return a.createDocumentFragment();c=c||f(a);for(var e=c.frag.cloneNode(),g=0,h=d(),i=h.length;i>g;g++)e.createElement(h[g]);return e}function i(a,b){b.cache||(b.cache={},b.createElem=a.createElement,b.createFrag=a.createDocumentFragment,b.frag=b.createFrag()),a.createElement=function(c){return t.shivMethods?g(c,a,b):b.createElem(c)},a.createDocumentFragment=Function("h,f","return function(){var n=f.cloneNode(),c=n.createElement;h.shivMethods&&("+d().join().replace(/[\w\-:]+/g,function(a){return b.createElem(a),b.frag.createElement(a),'c("'+a+'")'})+");return n}")(t,b.frag)}function j(a){a||(a=b);var d=f(a);return!t.shivCSS||k||d.hasCSS||(d.hasCSS=!!c(a,"article,aside,dialog,figcaption,figure,footer,header,hgroup,main,nav,section{display:block}mark{background:#FF0;color:#000}template{display:none}")),l||i(a,d),a}var k,l,m="3.7.2",n=a.html5||{},o=/^<|^(?:button|map|select|textarea|object|iframe|option|optgroup)$/i,p=/^(?:a|b|code|div|fieldset|h1|h2|h3|h4|h5|h6|i|label|li|ol|p|q|span|strong|style|table|tbody|td|th|tr|ul)$/i,q="_html5shiv",r=0,s={};!function(){try{var a=b.createElement("a");a.innerHTML="<xyz></xyz>",k="hidden"in a,l=1==a.childNodes.length||function(){b.createElement("a");var a=b.createDocumentFragment();return"undefined"==typeof a.cloneNode||"undefined"==typeof a.createDocumentFragment||"undefined"==typeof a.createElement}()}catch(c){k=!0,l=!0}}();var t={elements:n.elements||"abbr article aside audio bdi canvas data datalist details dialog figcaption figure footer header hgroup main mark meter nav output picture progress section summary template time video",version:m,shivCSS:n.shivCSS!==!1,supportsUnknownElements:l,shivMethods:n.shivMethods!==!1,type:"default",shivDocument:j,createElement:g,createDocumentFragment:h,addElements:e};a.html5=t,j(b)}(this,document);
-};

inst/www/shared/bootstrap/shim/respond.min.js

@@ -1,8 +0,0 @@
-/*! Respond.js v1.4.2: min/max-width media query polyfill * Copyright 2013 Scott Jehl
- * Licensed under https://github.com/scottjehl/Respond/blob/master/LICENSE-MIT
- *  */
-
-// Only run this code in IE 8
-if (!!window.navigator.userAgent.match("MSIE 8")) {
-!function(a){"use strict";a.matchMedia=a.matchMedia||function(a){var b,c=a.documentElement,d=c.firstElementChild||c.firstChild,e=a.createElement("body"),f=a.createElement("div");return f.id="mq-test-1",f.style.cssText="position:absolute;top:-100em",e.style.background="none",e.appendChild(f),function(a){return f.innerHTML='&shy;<style media="'+a+'"> #mq-test-1 { width: 42px; }</style>',c.insertBefore(e,d),b=42===f.offsetWidth,c.removeChild(e),{matches:b,media:a}}}(a.document)}(this),function(a){"use strict";function b(){u(!0)}var c={};a.respond=c,c.update=function(){};var d=[],e=function(){var b=!1;try{b=new a.XMLHttpRequest}catch(c){b=new a.ActiveXObject("Microsoft.XMLHTTP")}return function(){return b}}(),f=function(a,b){var c=e();c&&(c.open("GET",a,!0),c.onreadystatechange=function(){4!==c.readyState||200!==c.status&&304!==c.status||b(c.responseText)},4!==c.readyState&&c.send(null))};if(c.ajax=f,c.queue=d,c.regex={media:/@media[^\{]+\{([^\{\}]*\{[^\}\{]*\})+/gi,keyframes:/@(?:\-(?:o|moz|webkit)\-)?keyframes[^\{]+\{(?:[^\{\}]*\{[^\}\{]*\})+[^\}]*\}/gi,urls:/(url\()['"]?([^\/\)'"][^:\)'"]+)['"]?(\))/g,findStyles:/@media *([^\{]+)\{([\S\s]+?)$/,only:/(only\s+)?([a-zA-Z]+)\s?/,minw:/\([\s]*min\-width\s*:[\s]*([\s]*[0-9\.]+)(px|em)[\s]*\)/,maxw:/\([\s]*max\-width\s*:[\s]*([\s]*[0-9\.]+)(px|em)[\s]*\)/},c.mediaQueriesSupported=a.matchMedia&&null!==a.matchMedia("only all")&&a.matchMedia("only all").matches,!c.mediaQueriesSupported){var g,h,i,j=a.document,k=j.documentElement,l=[],m=[],n=[],o={},p=30,q=j.getElementsByTagName("head")[0]||k,r=j.getElementsByTagName("base")[0],s=q.getElementsByTagName("link"),t=function(){var a,b=j.createElement("div"),c=j.body,d=k.style.fontSize,e=c&&c.style.fontSize,f=!1;return b.style.cssText="position:absolute;font-size:1em;width:1em",c||(c=f=j.createElement("body"),c.style.background="none"),k.style.fontSize="100%",c.style.fontSize="100%",c.appendChild(b),f&&k.insertBefore(c,k.firstChild),a=b.offsetWidth,f?k.removeChild(c):c.removeChild(b),k.style.fontSize=d,e&&(c.style.fontSize=e),a=i=parseFloat(a)},u=function(b){var c="clientWidth",d=k[c],e="CSS1Compat"===j.compatMode&&d||j.body[c]||d,f={},o=s[s.length-1],r=(new Date).getTime();if(b&&g&&p>r-g)return a.clearTimeout(h),h=a.setTimeout(u,p),void 0;g=r;for(var v in l)if(l.hasOwnProperty(v)){var w=l[v],x=w.minw,y=w.maxw,z=null===x,A=null===y,B="em";x&&(x=parseFloat(x)*(x.indexOf(B)>-1?i||t():1)),y&&(y=parseFloat(y)*(y.indexOf(B)>-1?i||t():1)),w.hasquery&&(z&&A||!(z||e>=x)||!(A||y>=e))||(f[w.media]||(f[w.media]=[]),f[w.media].push(m[w.rules]))}for(var C in n)n.hasOwnProperty(C)&&n[C]&&n[C].parentNode===q&&q.removeChild(n[C]);n.length=0;for(var D in f)if(f.hasOwnProperty(D)){var E=j.createElement("style"),F=f[D].join("\n");E.type="text/css",E.media=D,q.insertBefore(E,o.nextSibling),E.styleSheet?E.styleSheet.cssText=F:E.appendChild(j.createTextNode(F)),n.push(E)}},v=function(a,b,d){var e=a.replace(c.regex.keyframes,"").match(c.regex.media),f=e&&e.length||0;b=b.substring(0,b.lastIndexOf("/"));var g=function(a){return a.replace(c.regex.urls,"$1"+b+"$2$3")},h=!f&&d;b.length&&(b+="/"),h&&(f=1);for(var i=0;f>i;i++){var j,k,n,o;h?(j=d,m.push(g(a))):(j=e[i].match(c.regex.findStyles)&&RegExp.$1,m.push(RegExp.$2&&g(RegExp.$2))),n=j.split(","),o=n.length;for(var p=0;o>p;p++)k=n[p],l.push({media:k.split("(")[0].match(c.regex.only)&&RegExp.$2||"all",rules:m.length-1,hasquery:k.indexOf("(")>-1,minw:k.match(c.regex.minw)&&parseFloat(RegExp.$1)+(RegExp.$2||""),maxw:k.match(c.regex.maxw)&&parseFloat(RegExp.$1)+(RegExp.$2||"")})}u()},w=function(){if(d.length){var b=d.shift();f(b.href,function(c){v(c,b.href,b.media),o[b.href]=!0,a.setTimeout(function(){w()},0)})}},x=function(){for(var b=0;b<s.length;b++){var c=s[b],e=c.href,f=c.media,g=c.rel&&"stylesheet"===c.rel.toLowerCase();e&&g&&!o[e]&&(c.styleSheet&&c.styleSheet.rawCssText?(v(c.styleSheet.rawCssText,e,f),o[e]=!0):(!/^([a-zA-Z:]*\/\/)/.test(e)&&!r||e.replace(RegExp.$1,"").split("/")[0]===a.location.host)&&("//"===e.substring(0,2)&&(e=a.location.protocol+e),d.push({href:e,media:f})))}w()};x(),c.update=x,c.getEmValue=t,a.addEventListener?a.addEventListener("resize",b,!1):a.attachEvent&&a.attachEvent("onresize",b)}}(this);
-};

inst/www/shared/datepicker/css/bootstrap-datepicker3.css

@@ -1,28 +1,30 @@
-/*!
- * Datepicker for Bootstrap v1.6.4 (https://github.com/eternicode/bootstrap-datepicker)
- *
- * Copyright 2012 Stefan Petre
- * Improvements by Andrew Rowls
- * Licensed under the Apache License v2.0 (http://www.apache.org/licenses/LICENSE-2.0)
- */
 .datepicker {
-  border-radius: 4px;
+  border-radius: 0.25rem;
   direction: ltr;
 }
+
 .datepicker-inline {
   width: 220px;
 }
-.datepicker.datepicker-rtl {
+
+.datepicker-rtl {
   direction: rtl;
 }
-.datepicker.datepicker-rtl table tr td span {
+
+.datepicker-rtl.dropdown-menu {
+  left: auto;
+}
+
+.datepicker-rtl table tr td span {
   float: right;
 }
+
 .datepicker-dropdown {
   top: 0;
   left: 0;
   padding: 4px;
 }
+
 .datepicker-dropdown:before {
   content: '';
   display: inline-block;
@@ -33,6 +35,7 @@
   border-bottom-color: rgba(0, 0, 0, 0.2);
   position: absolute;
 }
+
 .datepicker-dropdown:after {
   content: '';
   display: inline-block;
@@ -42,34 +45,43 @@
   border-top: 0;
   position: absolute;
 }
+
 .datepicker-dropdown.datepicker-orient-left:before {
   left: 6px;
 }
+
 .datepicker-dropdown.datepicker-orient-left:after {
   left: 7px;
 }
+
 .datepicker-dropdown.datepicker-orient-right:before {
   right: 6px;
 }
+
 .datepicker-dropdown.datepicker-orient-right:after {
   right: 7px;
 }
+
 .datepicker-dropdown.datepicker-orient-bottom:before {
   top: -7px;
 }
+
 .datepicker-dropdown.datepicker-orient-bottom:after {
   top: -6px;
 }
+
 .datepicker-dropdown.datepicker-orient-top:before {
   bottom: -7px;
   border-bottom: 0;
   border-top: 7px solid rgba(0, 0, 0, 0.15);
 }
+
 .datepicker-dropdown.datepicker-orient-top:after {
   bottom: -6px;
   border-bottom: 0;
   border-top: 6px solid #fff;
 }
+
 .datepicker table {
   margin: 0;
   -webkit-touch-callout: none;
@@ -79,424 +91,352 @@
   -ms-user-select: none;
   user-select: none;
 }
-.datepicker table tr td,
-.datepicker table tr th {
+
+.datepicker table tr td, .datepicker table tr th {
   text-align: center;
   width: 30px;
   height: 30px;
   border-radius: 4px;
   border: none;
 }
-.table-striped .datepicker table tr td,
-.table-striped .datepicker table tr th {
+
+.table-striped .datepicker table tr td, .table-striped .datepicker table tr th {
   background-color: transparent;
 }
-.datepicker table tr td.old,
-.datepicker table tr td.new {
-  color: #777777;
+
+.datepicker table tr td.old, .datepicker table tr td.new {
+  color: #6c757d;
 }
-.datepicker table tr td.day:hover,
-.datepicker table tr td.focused {
-  background: #eeeeee;
+
+.datepicker table tr td.day:hover, .datepicker table tr td.focused {
+  color: #212529;
+  background: #e9e9ea;
   cursor: pointer;
 }
-.datepicker table tr td.disabled,
-.datepicker table tr td.disabled:hover {
+
+.datepicker table tr td.disabled, .datepicker table tr td.disabled:hover {
   background: none;
-  color: #777777;
+  color: #6c757d;
   cursor: default;
 }
+
 .datepicker table tr td.highlighted {
-  color: #000;
-  background-color: #d9edf7;
-  border-color: #85c5e5;
+  color: #212529;
+  background-color: #d1ecf1;
+  border-color: #83ccd9;
   border-radius: 0;
 }
-.datepicker table tr td.highlighted:focus,
-.datepicker table tr td.highlighted.focus {
-  color: #000;
-  background-color: #afd9ee;
-  border-color: #298fc2;
+
+.datepicker table tr td.highlighted:focus, .datepicker table tr td.highlighted.focus {
+  color: #212529;
+  background-color: #bfd8dd;
+  border-color: #6aa2ad;
 }
+
 .datepicker table tr td.highlighted:hover {
-  color: #000;
-  background-color: #afd9ee;
-  border-color: #52addb;
+  color: #212529;
+  background-color: #79898d;
+  border-color: #77b8c4;
 }
-.datepicker table tr td.highlighted:active,
-.datepicker table tr td.highlighted.active {
-  color: #000;
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 }
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 }
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 }
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 }
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 }
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 }
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 }
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 fieldset[disabled] .datepicker table tr td.range.focus {
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 }
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 }
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 }
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 }
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-.datepicker table tr td.active.highlighted[disabled]:focus,
 fieldset[disabled] .datepicker table tr td.active:focus,
+fieldset[disabled] .datepicker table tr td.active.focus, .datepicker table tr td.active.highlighted.disabled:hover, .datepicker table tr td.active.highlighted.disabled:focus, .datepicker table tr td.active.highlighted.disabled.focus, .datepicker table tr td.active.highlighted[disabled]:hover, .datepicker table tr td.active.highlighted[disabled]:focus, .datepicker table tr td.active.highlighted[disabled].focus,
+fieldset[disabled] .datepicker table tr td.active.highlighted:hover,
 fieldset[disabled] .datepicker table tr td.active.highlighted:focus,
-.datepicker table tr td.active.disabled.focus,
-.datepicker table tr td.active.highlighted.disabled.focus,
-.datepicker table tr td.active[disabled].focus,
-.datepicker table tr td.active.highlighted[disabled].focus,
-fieldset[disabled] .datepicker table tr td.active.focus,
 fieldset[disabled] .datepicker table tr td.active.highlighted.focus {
-  background-color: #337ab7;
-  border-color: #2e6da4;
+  background-color: #007bff;
+  border-color: #0277f4;
 }
+
 .datepicker table tr td span {
   display: block;
   width: 23%;
@@ -507,172 +447,127 @@ fieldset[disabled] .datepicker table tr td.active.highlighted.focus {
   cursor: pointer;
   border-radius: 4px;
 }
-.datepicker table tr td span:hover,
-.datepicker table tr td span.focused {
-  background: #eeeeee;
+
+.datepicker table tr td span:hover, .datepicker table tr td span.focused {
+  color: #212529;
+  background: #e9e9ea;
 }
-.datepicker table tr td span.disabled,
-.datepicker table tr td span.disabled:hover {
+
+.datepicker table tr td span.disabled, .datepicker table tr td span.disabled:hover {
   background: none;
-  color: #777777;
+  color: #6c757d;
   cursor: default;
 }
-.datepicker table tr td span.active,
-.datepicker table tr td span.active:hover,
-.datepicker table tr td span.active.disabled,
-.datepicker table tr td span.active.disabled:hover {
+
+.datepicker table tr td span.active, .datepicker table tr td span.active:hover, .datepicker table tr td span.active.disabled, .datepicker table tr td span.active.disabled:hover {
   color: #fff;
-  background-color: #337ab7;
-  border-color: #2e6da4;
+  background-color: #007bff;
+  border-color: #0277f4;
   text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
 }
-.datepicker table tr td span.active:focus,
-.datepicker table tr td span.active:hover:focus,
-.datepicker table tr td span.active.disabled:focus,
-.datepicker table tr td span.active.disabled:hover:focus,
-.datepicker table tr td span.active.focus,
-.datepicker table tr td span.active:hover.focus,
-.datepicker table tr td span.active.disabled.focus,
-.datepicker table tr td span.active.disabled:hover.focus {
+
+.datepicker table tr td span.active:focus, .datepicker table tr td span.active.focus, .datepicker table tr td span.active:hover:focus, .datepicker table tr td span.active:hover.focus, .datepicker table tr td span.active.disabled:focus, .datepicker table tr td span.active.disabled.focus, .datepicker table tr td span.active.disabled:hover:focus, .datepicker table tr td span.active.disabled:hover.focus {
   color: #fff;
-  background-color: #286090;
-  border-color: #122b40;
+  background-color: #1a88ff;
+  border-color: #4199f7;
 }
-.datepicker table tr td span.active:hover,
-.datepicker table tr td span.active:hover:hover,
-.datepicker table tr td span.active.disabled:hover,
-.datepicker table tr td span.active.disabled:hover:hover {
+
+.datepicker table tr td span.active:hover, .datepicker table tr td span.active:hover:hover, .datepicker table tr td span.active.disabled:hover, .datepicker table tr td span.active.disabled:hover:hover {
   color: #fff;
-  background-color: #286090;
-  border-color: #204d74;
+  background-color: #80bdff;
+  border-color: #2087f5;
 }
-.datepicker table tr td span.active:active,
-.datepicker table tr td span.active:hover:active,
-.datepicker table tr td span.active.disabled:active,
-.datepicker table tr td span.active.disabled:hover:active,
-.datepicker table tr td span.active.active,
-.datepicker table tr td span.active:hover.active,
-.datepicker table tr td span.active.disabled.active,
-.datepicker table tr td span.active.disabled:hover.active {
+
+.datepicker table tr td span.active:active, .datepicker table tr td span.active.active, .datepicker table tr td span.active:hover:active, .datepicker table tr td span.active:hover.active, .datepicker table tr td span.active.disabled:active, .datepicker table tr td span.active.disabled.active, .datepicker table tr td span.active.disabled:hover:active, .datepicker table tr td span.active.disabled:hover.active {
   color: #fff;
-  background-color: #286090;
-  border-color: #204d74;
+  background-color: #1a88ff;
+  border-color: #2087f5;
 }
-.datepicker table tr td span.active:active:hover,
-.datepicker table tr td span.active:hover:active:hover,
-.datepicker table tr td span.active.disabled:active:hover,
-.datepicker table tr td span.active.disabled:hover:active:hover,
-.datepicker table tr td span.active.active:hover,
-.datepicker table tr td span.active:hover.active:hover,
-.datepicker table tr td span.active.disabled.active:hover,
-.datepicker table tr td span.active.disabled:hover.active:hover,
-.datepicker table tr td span.active:active:focus,
-.datepicker table tr td span.active:hover:active:focus,
-.datepicker table tr td span.active.disabled:active:focus,
-.datepicker table tr td span.active.disabled:hover:active:focus,
-.datepicker table tr td span.active.active:focus,
-.datepicker table tr td span.active:hover.active:focus,
-.datepicker table tr td span.active.disabled.active:focus,
-.datepicker table tr td span.active.disabled:hover.active:focus,
-.datepicker table tr td span.active:active.focus,
-.datepicker table tr td span.active:hover:active.focus,
-.datepicker table tr td span.active.disabled:active.focus,
-.datepicker table tr td span.active.disabled:hover:active.focus,
-.datepicker table tr td span.active.active.focus,
-.datepicker table tr td span.active:hover.active.focus,
-.datepicker table tr td span.active.disabled.active.focus,
-.datepicker table tr td span.active.disabled:hover.active.focus {
+
+.datepicker table tr td span.active:active:hover, .datepicker table tr td span.active:active:focus, .datepicker table tr td span.active:active.focus, .datepicker table tr td span.active.active:hover, .datepicker table tr td span.active.active:focus, .datepicker table tr td span.active.active.focus, .datepicker table tr td span.active:hover:active:hover, .datepicker table tr td span.active:hover:active:focus, .datepicker table tr td span.active:hover:active.focus, .datepicker table tr td span.active:hover.active:hover, .datepicker table tr td span.active:hover.active:focus, .datepicker table tr td span.active:hover.active.focus, .datepicker table tr td span.active.disabled:active:hover, .datepicker table tr td span.active.disabled:active:focus, .datepicker table tr td span.active.disabled:active.focus, .datepicker table tr td span.active.disabled.active:hover, .datepicker table tr td span.active.disabled.active:focus, .datepicker table tr td span.active.disabled.active.focus, .datepicker table tr td span.active.disabled:hover:active:hover, .datepicker table tr td span.active.disabled:hover:active:focus, .datepicker table tr td span.active.disabled:hover:active.focus, .datepicker table tr td span.active.disabled:hover.active:hover, .datepicker table tr td span.active.disabled:hover.active:focus, .datepicker table tr td span.active.disabled:hover.active.focus {
   color: #fff;
-  background-color: #204d74;
-  border-color: #122b40;
+  background-color: #2b91ff;
+  border-color: #4199f7;
 }
-.datepicker table tr td span.active.disabled:hover,
-.datepicker table tr td span.active:hover.disabled:hover,
-.datepicker table tr td span.active.disabled.disabled:hover,
-.datepicker table tr td span.active.disabled:hover.disabled:hover,
-.datepicker table tr td span.active[disabled]:hover,
-.datepicker table tr td span.active:hover[disabled]:hover,
-.datepicker table tr td span.active.disabled[disabled]:hover,
-.datepicker table tr td span.active.disabled:hover[disabled]:hover,
+
+.datepicker table tr td span.active.disabled:hover, .datepicker table tr td span.active.disabled:focus, .datepicker table tr td span.active.disabled.focus, .datepicker table tr td span.active[disabled]:hover, .datepicker table tr td span.active[disabled]:focus, .datepicker table tr td span.active[disabled].focus,
 fieldset[disabled] .datepicker table tr td span.active:hover,
-fieldset[disabled] .datepicker table tr td span.active:hover:hover,
-fieldset[disabled] .datepicker table tr td span.active.disabled:hover,
-fieldset[disabled] .datepicker table tr td span.active.disabled:hover:hover,
-.datepicker table tr td span.active.disabled:focus,
-.datepicker table tr td span.active:hover.disabled:focus,
-.datepicker table tr td span.active.disabled.disabled:focus,
-.datepicker table tr td span.active.disabled:hover.disabled:focus,
-.datepicker table tr td span.active[disabled]:focus,
-.datepicker table tr td span.active:hover[disabled]:focus,
-.datepicker table tr td span.active.disabled[disabled]:focus,
-.datepicker table tr td span.active.disabled:hover[disabled]:focus,
 fieldset[disabled] .datepicker table tr td span.active:focus,
+fieldset[disabled] .datepicker table tr td span.active.focus, .datepicker table tr td span.active:hover.disabled:hover, .datepicker table tr td span.active:hover.disabled:focus, .datepicker table tr td span.active:hover.disabled.focus, .datepicker table tr td span.active:hover[disabled]:hover, .datepicker table tr td span.active:hover[disabled]:focus, .datepicker table tr td span.active:hover[disabled].focus,
+fieldset[disabled] .datepicker table tr td span.active:hover:hover,
 fieldset[disabled] .datepicker table tr td span.active:hover:focus,
+fieldset[disabled] .datepicker table tr td span.active:hover.focus, .datepicker table tr td span.active.disabled.disabled:hover, .datepicker table tr td span.active.disabled.disabled:focus, .datepicker table tr td span.active.disabled.disabled.focus, .datepicker table tr td span.active.disabled[disabled]:hover, .datepicker table tr td span.active.disabled[disabled]:focus, .datepicker table tr td span.active.disabled[disabled].focus,
+fieldset[disabled] .datepicker table tr td span.active.disabled:hover,
 fieldset[disabled] .datepicker table tr td span.active.disabled:focus,
+fieldset[disabled] .datepicker table tr td span.active.disabled.focus, .datepicker table tr td span.active.disabled:hover.disabled:hover, .datepicker table tr td span.active.disabled:hover.disabled:focus, .datepicker table tr td span.active.disabled:hover.disabled.focus, .datepicker table tr td span.active.disabled:hover[disabled]:hover, .datepicker table tr td span.active.disabled:hover[disabled]:focus, .datepicker table tr td span.active.disabled:hover[disabled].focus,
+fieldset[disabled] .datepicker table tr td span.active.disabled:hover:hover,
 fieldset[disabled] .datepicker table tr td span.active.disabled:hover:focus,
-.datepicker table tr td span.active.disabled.focus,
-.datepicker table tr td span.active:hover.disabled.focus,
-.datepicker table tr td span.active.disabled.disabled.focus,
-.datepicker table tr td span.active.disabled:hover.disabled.focus,
-.datepicker table tr td span.active[disabled].focus,
-.datepicker table tr td span.active:hover[disabled].focus,
-.datepicker table tr td span.active.disabled[disabled].focus,
-.datepicker table tr td span.active.disabled:hover[disabled].focus,
-fieldset[disabled] .datepicker table tr td span.active.focus,
-fieldset[disabled] .datepicker table tr td span.active:hover.focus,
-fieldset[disabled] .datepicker table tr td span.active.disabled.focus,
 fieldset[disabled] .datepicker table tr td span.active.disabled:hover.focus {
-  background-color: #337ab7;
-  border-color: #2e6da4;
+  background-color: #007bff;
+  border-color: #0277f4;
 }
-.datepicker table tr td span.old,
-.datepicker table tr td span.new {
-  color: #777777;
+
+.datepicker table tr td span.old, .datepicker table tr td span.new {
+  color: #6c757d;
 }
+
 .datepicker .datepicker-switch {
   width: 145px;
 }
+
 .datepicker .datepicker-switch,
 .datepicker .prev,
 .datepicker .next,
 .datepicker tfoot tr th {
   cursor: pointer;
 }
+
 .datepicker .datepicker-switch:hover,
 .datepicker .prev:hover,
 .datepicker .next:hover,
 .datepicker tfoot tr th:hover {
-  background: #eeeeee;
+  color: #212529;
+  background: #e9e9ea;
 }
+
+.datepicker .prev.disabled, .datepicker .next.disabled {
+  visibility: hidden;
+}
+
 .datepicker .cw {
   font-size: 10px;
   width: 12px;
   padding: 0 2px 0 5px;
   vertical-align: middle;
 }
+
 .input-group.date .input-group-addon {
   cursor: pointer;
 }
+
 .input-daterange {
   width: 100%;
 }
+
 .input-daterange input {
   text-align: center;
 }
+
 .input-daterange input:first-child {
   border-radius: 3px 0 0 3px;
 }
+
 .input-daterange input:last-child {
   border-radius: 0 3px 3px 0;
 }
+
 .input-daterange .input-group-addon {
   width: auto;
   min-width: 16px;
   padding: 4px 5px;
-  line-height: 1.42857143;
-  text-shadow: 0 1px 0 #fff;
+  line-height: 1.5;
   border-width: 1px 0;
   margin-left: -5px;
   margin-right: -5px;
 }
-/*# sourceMappingURL=bootstrap-datepicker3.css.map */
+

inst/www/shared/datepicker/js/locales/bootstrap-datepicker-en-CA.min.js

@@ -0,0 +1 @@
+!function(a){a.fn.datepicker.dates["en-CA"]={days:["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"],daysShort:["Sun","Mon","Tue","Wed","Thu","Fri","Sat"],daysMin:["Su","Mo","Tu","We","Th","Fr","Sa"],months:["January","February","March","April","May","June","July","August","September","October","November","December"],monthsShort:["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"],today:"Today",monthsTitle:"Months",clear:"Clear",weekStart:0,format:"yyyy-mm-dd"},a.fn.datepicker.deprecated("This filename doesn't follow the convention, use bootstrap-datepicker.en-CA.js instead.")}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.ar-tn.min.js

@@ -0,0 +1 @@
+!function(a){a.fn.datepicker.dates["ar-tn"]={days:["الأحد","الاثنين","الثلاثاء","الأربعاء","الخميس","الجمعة","السبت","الأحد"],daysShort:["أحد","اثنين","ثلاثاء","أربعاء","خميس","جمعة","سبت","أحد"],daysMin:["ح","ن","ث","ع","خ","ج","س","ح"],months:["جانفي","فيفري","مارس","أفريل","ماي","جوان","جويليه","أوت","سبتمبر","أكتوبر","نوفمبر","ديسمبر"],monthsShort:["جانفي","فيفري","مارس","أفريل","ماي","جوان","جويليه","أوت","سبتمبر","أكتوبر","نوفمبر","ديسمبر"],today:"هذا اليوم",rtl:!0}}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.az.min.js

@@ -1 +1 @@
-!function(a){a.fn.datepicker.dates.az={days:["Bazar","Bazar ertəsi","Çərşənbə axşamı","Çərşənbə","Cümə axşamı","Cümə","Şənbə"],daysShort:["B.","B.e","Ç.a","Ç.","C.a","C.","Ş."],daysMin:["B.","B.e","Ç.a","Ç.","C.a","C.","Ş."],months:["Yanvar","Fevral","Mart","Aprel","May","İyun","İyul","Avqust","Sentyabr","Oktyabr","Noyabr","Dekabr"],monthsShort:["Yan","Fev","Mar","Apr","May","İyun","İyul","Avq","Sen","Okt","Noy","Dek"],today:"Bu gün",weekStart:1}}(jQuery);
+!function(a){a.fn.datepicker.dates.az={days:["Bazar","Bazar ertəsi","Çərşənbə axşamı","Çərşənbə","Cümə axşamı","Cümə","Şənbə"],daysShort:["B.","B.e","Ç.a","Ç.","C.a","C.","Ş."],daysMin:["B.","B.e","Ç.a","Ç.","C.a","C.","Ş."],months:["Yanvar","Fevral","Mart","Aprel","May","İyun","İyul","Avqust","Sentyabr","Oktyabr","Noyabr","Dekabr"],monthsShort:["Yan","Fev","Mar","Apr","May","İyun","İyul","Avq","Sen","Okt","Noy","Dek"],today:"Bu gün",weekStart:1,clear:"Təmizlə",monthsTitle:"Aylar"}}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.bm.min.js

@@ -0,0 +1 @@
+!function(a){a.fn.datepicker.dates.bm={days:["Kari","Ntɛnɛn","Tarata","Araba","Alamisa","Juma","Sibiri"],daysShort:["Kar","Ntɛ","Tar","Ara","Ala","Jum","Sib"],daysMin:["Ka","Nt","Ta","Ar","Al","Ju","Si"],months:["Zanwuyekalo","Fewuruyekalo","Marisikalo","Awirilikalo","Mɛkalo","Zuwɛnkalo","Zuluyekalo","Utikalo","Sɛtanburukalo","ɔkutɔburukalo","Nowanburukalo","Desanburukalo"],monthsShort:["Zan","Few","Mar","Awi","Mɛ","Zuw","Zul","Uti","Sɛt","ɔku","Now","Des"],today:"Bi",monthsTitle:"Kalo",clear:"Ka jɔsi",weekStart:1,format:"dd/mm/yyyy"}}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.bn.min.js

@@ -0,0 +1 @@
+!function(a){a.fn.datepicker.dates.bn={days:["রবিবার","সোমবার","মঙ্গলবার","বুধবার","বৃহস্পতিবার","শুক্রবার","শনিবার"],daysShort:["রবিবার","সোমবার","মঙ্গলবার","বুধবার","বৃহস্পতিবার","শুক্রবার","শনিবার"],daysMin:["রবি","সোম","মঙ্গল","বুধ","বৃহস্পতি","শুক্র","শনি"],months:["জানুয়ারী","ফেব্রুয়ারি","মার্চ","এপ্রিল","মে","জুন","জুলাই","অগাস্ট","সেপ্টেম্বর","অক্টোবর","নভেম্বর","ডিসেম্বর"],monthsShort:["জানুয়ারী","ফেব্রুয়ারি","মার্চ","এপ্রিল","মে","জুন","জুলাই","অগাস্ট","সেপ্টেম্বর","অক্টোবর","নভেম্বর","ডিসেম্বর"],today:"আজ",monthsTitle:"মাস",clear:"পরিষ্কার",weekStart:0,format:"mm/dd/yyyy"}}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.br.min.js

@@ -0,0 +1 @@
+!function(a){a.fn.datepicker.dates.br={days:["Sul","Lun","Meurzh","Merc'her","Yaou","Gwener","Sadorn"],daysShort:["Sul","Lun","Meu.","Mer.","Yao.","Gwe.","Sad."],daysMin:["Su","L","Meu","Mer","Y","G","Sa"],months:["Genver","C'hwevrer","Meurzh","Ebrel","Mae","Mezheven","Gouere","Eost","Gwengolo","Here","Du","Kerzu"],monthsShort:["Genv.","C'hw.","Meur.","Ebre.","Mae","Mezh.","Goue.","Eost","Gwen.","Here","Du","Kerz."],today:"Hiziv",monthsTitle:"Miz",clear:"Dilemel",weekStart:1,format:"dd/mm/yyyy"}}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.cs.min.js

@@ -1 +1 @@
-!function(a){a.fn.datepicker.dates.cs={days:["Neděle","Pondělí","Úterý","Středa","Čtvrtek","Pátek","Sobota"],daysShort:["Ned","Pon","Úte","Stř","Čtv","Pát","Sob"],daysMin:["Ne","Po","Út","St","Čt","Pá","So"],months:["Leden","Únor","Březen","Duben","Květen","Červen","Červenec","Srpen","Září","Říjen","Listopad","Prosinec"],monthsShort:["Led","Úno","Bře","Dub","Kvě","Čer","Čnc","Srp","Zář","Říj","Lis","Pro"],today:"Dnes",clear:"Vymazat",weekStart:1,format:"dd.m.yyyy"}}(jQuery);
+!function(a){a.fn.datepicker.dates.cs={days:["Neděle","Pondělí","Úterý","Středa","Čtvrtek","Pátek","Sobota"],daysShort:["Ned","Pon","Úte","Stř","Čtv","Pát","Sob"],daysMin:["Ne","Po","Út","St","Čt","Pá","So"],months:["Leden","Únor","Březen","Duben","Květen","Červen","Červenec","Srpen","Září","Říjen","Listopad","Prosinec"],monthsShort:["Led","Úno","Bře","Dub","Kvě","Čer","Čnc","Srp","Zář","Říj","Lis","Pro"],today:"Dnes",clear:"Vymazat",monthsTitle:"Měsíc",weekStart:1,format:"dd.mm.yyyy"}}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.da.min.js

@@ -1 +1 @@
-!function(a){a.fn.datepicker.dates.da={days:["søndag","mandag","tirsdag","onsdag","torsdag","fredag","lørdag"],daysShort:["søn","man","tir","ons","tor","fre","lør"],daysMin:["sø","ma","ti","on","to","fr","lø"],months:["januar","februar","marts","april","maj","juni","juli","august","september","oktober","november","december"],monthsShort:["jan","feb","mar","apr","maj","jun","jul","aug","sep","okt","nov","dec"],today:"I Dag",clear:"Nulstil"}}(jQuery);
+!function(a){a.fn.datepicker.dates.da={days:["Søndag","Mandag","Tirsdag","Onsdag","Torsdag","Fredag","Lørdag"],daysShort:["Søn","Man","Tir","Ons","Tor","Fre","Lør"],daysMin:["Sø","Ma","Ti","On","To","Fr","Lø"],months:["Januar","Februar","Marts","April","Maj","Juni","Juli","August","September","Oktober","November","December"],monthsShort:["Jan","Feb","Mar","Apr","Maj","Jun","Jul","Aug","Sep","Okt","Nov","Dec"],today:"I Dag",weekStart:1,clear:"Nulstil",format:"dd/mm/yyyy",monthsTitle:"Måneder"}}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.en-CA.min.js

@@ -0,0 +1 @@
+!function(a){a.fn.datepicker.dates["en-CA"]={days:["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"],daysShort:["Sun","Mon","Tue","Wed","Thu","Fri","Sat"],daysMin:["Su","Mo","Tu","We","Th","Fr","Sa"],months:["January","February","March","April","May","June","July","August","September","October","November","December"],monthsShort:["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"],today:"Today",monthsTitle:"Months",clear:"Clear",weekStart:0,format:"yyyy-mm-dd"}}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.en-IE.min.js

@@ -0,0 +1 @@
+!function(a){a.fn.datepicker.dates["en-IE"]={days:["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"],daysShort:["Sun","Mon","Tue","Wed","Thu","Fri","Sat"],daysMin:["Su","Mo","Tu","We","Th","Fr","Sa"],months:["January","February","March","April","May","June","July","August","September","October","November","December"],monthsShort:["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"],today:"Today",monthsTitle:"Months",clear:"Clear",weekStart:1,format:"dd/mm/yyyy"}}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.en-NZ.min.js

@@ -0,0 +1 @@
+!function(a){a.fn.datepicker.dates["en-NZ"]={days:["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"],daysShort:["Sun","Mon","Tue","Wed","Thu","Fri","Sat"],daysMin:["Su","Mo","Tu","We","Th","Fr","Sa"],months:["January","February","March","April","May","June","July","August","September","October","November","December"],monthsShort:["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"],today:"Today",monthsTitle:"Months",clear:"Clear",weekStart:1,format:"d/mm/yyyy"}}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.en-ZA.min.js

@@ -0,0 +1 @@
+!function(a){a.fn.datepicker.dates["en-ZA"]={days:["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"],daysShort:["Sun","Mon","Tue","Wed","Thu","Fri","Sat"],daysMin:["Su","Mo","Tu","We","Th","Fr","Sa"],months:["January","February","March","April","May","June","July","August","September","October","November","December"],monthsShort:["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"],today:"Today",monthsTitle:"Months",clear:"Clear",weekStart:1,format:"yyyy/mm/d"}}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.eu.min.js

@@ -1 +1 @@
-!function(a){a.fn.datepicker.dates.eu={days:["Igandea","Astelehena","Asteartea","Asteazkena","Osteguna","Ostirala","Larunbata"],daysShort:["Ig","Al","Ar","Az","Og","Ol","Lr"],daysMin:["Ig","Al","Ar","Az","Og","Ol","Lr"],months:["Urtarrila","Otsaila","Martxoa","Apirila","Maiatza","Ekaina","Uztaila","Abuztua","Iraila","Urria","Azaroa","Abendua"],monthsShort:["Urt","Ots","Mar","Api","Mai","Eka","Uzt","Abu","Ira","Urr","Aza","Abe"],today:"Gaur"}}(jQuery);
+!function(a){a.fn.datepicker.dates.eu={days:["Igandea","Astelehena","Asteartea","Asteazkena","Osteguna","Ostirala","Larunbata"],daysShort:["Ig","Al","Ar","Az","Og","Ol","Lr"],daysMin:["Ig","Al","Ar","Az","Og","Ol","Lr"],months:["Urtarrila","Otsaila","Martxoa","Apirila","Maiatza","Ekaina","Uztaila","Abuztua","Iraila","Urria","Azaroa","Abendua"],monthsShort:["Urt","Ots","Mar","Api","Mai","Eka","Uzt","Abu","Ira","Urr","Aza","Abe"],today:"Gaur",monthsTitle:"Hilabeteak",clear:"Ezabatu",weekStart:1,format:"yyyy/mm/dd"}}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.hi.min.js

@@ -0,0 +1 @@
+!function(a){a.fn.datepicker.dates.hi={days:["रविवार","सोमवार","मंगलवार","बुधवार","गुरुवार","शुक्रवार","शनिवार"],daysShort:["सूर्य","सोम","मंगल","बुध","गुरु","शुक्र","शनि"],daysMin:["र","सो","मं","बु","गु","शु","श"],months:["जनवरी","फ़रवरी","मार्च","अप्रैल","मई","जून","जुलाई","अगस्त","सितम्बर","अक्टूबर","नवंबर","दिसम्बर"],monthsShort:["जन","फ़रवरी","मार्च","अप्रैल","मई","जून","जुलाई","अगस्त","सितं","अक्टूबर","नवं","दिसम्बर"],today:"आज",monthsTitle:"महीने",clear:"साफ",weekStart:1,format:"dd / mm / yyyy"}}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.hy.min.js

@@ -1 +1 @@
-!function(a){a.fn.datepicker.dates.hy={days:["Կիրակի","Երկուշաբթի","Երեքշաբթի","Չորեքշաբթի","Հինգշաբթի","Ուրբաթ","Շաբաթ"],daysShort:["Կրկ","Երկ","Երք","Չրք","Հնգ","Ուր","Շբթ"],daysMin:["Կրկ","Երկ","Երք","Չրք","Հնգ","Ուր","Շբթ"],months:["Հունվար","Փետրվար","Մարտ","Ապրիլ","Մայիս","Հունիս","Հուլիս","Օգոստոս","Սեպտեմբեր","Հոկտեմբեր","Նոյեմբեր","Դեկտեմբեր"],monthsShort:["Հուն","Փետ","Մար","Ապր","Մայ","Հնս","Հլս","Օգս","Սեպ","Հոկ","Նմբ","Դեկ"],today:"Այսօր",clear:"Ջնջել",format:"dd.mm.yyyy",weekStart:1}}(jQuery);
+!function(a){a.fn.datepicker.dates.hy={days:["Կիրակի","Երկուշաբթի","Երեքշաբթի","Չորեքշաբթի","Հինգշաբթի","Ուրբաթ","Շաբաթ"],daysShort:["Կիր","Երկ","Երե","Չոր","Հին","Ուրբ","Շաբ"],daysMin:["Կի","Եկ","Եք","Չո","Հի","Ու","Շա"],months:["Հունվար","Փետրվար","Մարտ","Ապրիլ","Մայիս","Հունիս","Հուլիս","Օգոստոս","Սեպտեմբեր","Հոկտեմբեր","Նոյեմբեր","Դեկտեմբեր"],monthsShort:["Հնվ","Փետ","Մար","Ապր","Մայ","Հուն","Հուլ","Օգս","Սեպ","Հոկ","Նոյ","Դեկ"],today:"Այսօր",clear:"Ջնջել",format:"dd.mm.yyyy",weekStart:1,monthsTitle:"Ամիսնէր"}}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.ka.min.js

@@ -1 +1 @@
-!function(a){a.fn.datepicker.dates.ka={days:["კვირა","ორშაბათი","სამშაბათი","ოთხშაბათი","ხუთშაბათი","პარასკევი","შაბათი"],daysShort:["კვი","ორშ","სამ","ოთხ","ხუთ","პარ","შაბ"],daysMin:["კვ","ორ","სა","ოთ","ხუ","პა","შა"],months:["იანვარი","თებერვალი","მარტი","აპრილი","მაისი","ივნისი","ივლისი","აგვისტო","სექტემბერი","ოქტომები","ნოემბერი","დეკემბერი"],monthsShort:["იან","თებ","მარ","აპრ","მაი","ივნ","ივლ","აგვ","სექ","ოქტ","ნოე","დეკ"],today:"დღეს",clear:"გასუფთავება",weekStart:1,format:"dd.mm.yyyy"}}(jQuery);
+!function(a){a.fn.datepicker.dates.ka={days:["კვირა","ორშაბათი","სამშაბათი","ოთხშაბათი","ხუთშაბათი","პარასკევი","შაბათი"],daysShort:["კვი","ორშ","სამ","ოთხ","ხუთ","პარ","შაბ"],daysMin:["კვ","ორ","სა","ოთ","ხუ","პა","შა"],months:["იანვარი","თებერვალი","მარტი","აპრილი","მაისი","ივნისი","ივლისი","აგვისტო","სექტემბერი","ოქტომბერი","ნოემბერი","დეკემბერი"],monthsShort:["იან","თებ","მარ","აპრ","მაი","ივნ","ივლ","აგვ","სექ","ოქტ","ნოე","დეკ"],today:"დღეს",clear:"გასუფთავება",weekStart:1,format:"dd.mm.yyyy"}}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.kh.min.js

@@ -1 +1 @@
-!function(a){a.fn.datepicker.dates.kh={days:["អាទិត្យ","ចន្ទ","អង្គារ","ពុធ","ព្រហស្បតិ៍","សុក្រ","សៅរ៍","អាទិត្យ"],daysShort:["អា.ទិ","ចន្ទ","អង្គារ","ពុធ","ព្រ.ហ","សុក្រ","សៅរ៍","អា.ទិ"],daysMin:["អា.ទិ","ចន្ទ","អង្គារ","ពុធ","ព្រ.ហ","សុក្រ","សៅរ៍","អា.ទិ"],months:["មករា","កុម្ភះ","មិនា","មេសា","ឧសភា","មិថុនា","កក្កដា","សីហា","កញ្ញា","តុលា","វិច្ឆិកា","ធ្នូ"],monthsShort:["មករា","កុម្ភះ","មិនា","មេសា","ឧសភា","មិថុនា","កក្កដា","សីហា","កញ្ញា","តុលា","វិច្ឆិកា","ធ្នូ"],today:"ថ្ងៃនេះ",clear:"សំអាត"}}(jQuery);
+!function(a){a.fn.datepicker.dates.kh={days:["អាទិត្យ","ចន្ទ","អង្គារ","ពុធ","ព្រហស្បតិ៍","សុក្រ","សៅរ៍"],daysShort:["អា.ទិ","ចន្ទ","អង្គារ","ពុធ","ព្រ.ហ","សុក្រ","សៅរ៍"],daysMin:["អា.ទិ","ចន្ទ","អង្គារ","ពុធ","ព្រ.ហ","សុក្រ","សៅរ៍"],months:["មករា","កុម្ភះ","មិនា","មេសា","ឧសភា","មិថុនា","កក្កដា","សីហា","កញ្ញា","តុលា","វិច្ឆិកា","ធ្នូ"],monthsShort:["មករា","កុម្ភះ","មិនា","មេសា","ឧសភា","មិថុនា","កក្កដា","សីហា","កញ្ញា","តុលា","វិច្ឆិកា","ធ្នូ"],today:"ថ្ងៃនេះ",clear:"សំអាត"},a.fn.datepicker.deprecated('The language code "kh" is deprecated and will be removed in 2.0. For Khmer support use "km" instead.')}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.km.min.js

@@ -0,0 +1 @@
+!function(a){a.fn.datepicker.dates.km={days:["អាទិត្យ","ចន្ទ","អង្គារ","ពុធ","ព្រហស្បតិ៍","សុក្រ","សៅរ៍"],daysShort:["អា.ទិ","ចន្ទ","អង្គារ","ពុធ","ព្រ.ហ","សុក្រ","សៅរ៍"],daysMin:["អា.ទិ","ចន្ទ","អង្គារ","ពុធ","ព្រ.ហ","សុក្រ","សៅរ៍"],months:["មករា","កុម្ភះ","មិនា","មេសា","ឧសភា","មិថុនា","កក្កដា","សីហា","កញ្ញា","តុលា","វិច្ឆិកា","ធ្នូ"],monthsShort:["មករា","កុម្ភះ","មិនា","មេសា","ឧសភា","មិថុនា","កក្កដា","សីហា","កញ្ញា","តុលា","វិច្ឆិកា","ធ្នូ"],today:"ថ្ងៃនេះ",clear:"សំអាត"}}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.kr.min.js

@@ -1 +1 @@
-!function(a){a.fn.datepicker.dates.kr={days:["일요일","월요일","화요일","수요일","목요일","금요일","토요일"],daysShort:["일","월","화","수","목","금","토"],daysMin:["일","월","화","수","목","금","토"],months:["1월","2월","3월","4월","5월","6월","7월","8월","9월","10월","11월","12월"],monthsShort:["1월","2월","3월","4월","5월","6월","7월","8월","9월","10월","11월","12월"]}}(jQuery);
+!function(a){a.fn.datepicker.dates.kr={days:["일요일","월요일","화요일","수요일","목요일","금요일","토요일"],daysShort:["일","월","화","수","목","금","토"],daysMin:["일","월","화","수","목","금","토"],months:["1월","2월","3월","4월","5월","6월","7월","8월","9월","10월","11월","12월"],monthsShort:["1월","2월","3월","4월","5월","6월","7월","8월","9월","10월","11월","12월"]},a.fn.datepicker.deprecated('The language code "kr" is deprecated and will be removed in 2.0. For korean support use "ko" instead.')}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.lv.min.js

@@ -1 +1 @@
-!function(a){a.fn.datepicker.dates.lv={days:["Svētdiena","Pirmdiena","Otrdiena","Trešdiena","Ceturtdiena","Piektdiena","Sestdiena"],daysShort:["Sv","P","O","T","C","Pk","S"],daysMin:["Sv","Pr","Ot","Tr","Ce","Pk","Se"],months:["Janvāris","Februāris","Marts","Aprīlis","Maijs","Jūnijs","Jūlijs","Augusts","Septembris","Oktobris","Novembris","Decembris"],monthsShort:["Jan","Feb","Mar","Apr","Mai","Jūn","Jūl","Aug","Sep","Okt","Nov","Dec"],today:"Šodien",weekStart:1}}(jQuery);
+!function(a){a.fn.datepicker.dates.lv={days:["Svētdiena","Pirmdiena","Otrdiena","Trešdiena","Ceturtdiena","Piektdiena","Sestdiena"],daysShort:["Sv","P","O","T","C","Pk","S"],daysMin:["Sv","Pr","Ot","Tr","Ce","Pk","Se"],months:["Janvāris","Februāris","Marts","Aprīlis","Maijs","Jūnijs","Jūlijs","Augusts","Septembris","Oktobris","Novembris","Decembris"],monthsShort:["Jan","Feb","Mar","Apr","Mai","Jūn","Jūl","Aug","Sep","Okt","Nov","Dec"],monthsTitle:"Mēneši",today:"Šodien",clear:"Nodzēst",weekStart:1}}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.nb.min.js

@@ -1 +0,0 @@
-!function(a){a.fn.datepicker.dates.nb={days:["Søndag","Mandag","Tirsdag","Onsdag","Torsdag","Fredag","Lørdag"],daysShort:["Søn","Man","Tir","Ons","Tor","Fre","Lør"],daysMin:["Sø","Ma","Ti","On","To","Fr","Lø"],months:["Januar","Februar","Mars","April","Mai","Juni","Juli","August","September","Oktober","November","Desember"],monthsShort:["Jan","Feb","Mar","Apr","Mai","Jun","Jul","Aug","Sep","Okt","Nov","Des"],today:"I Dag",format:"dd.mm.yyyy"}}(jQuery);

inst/www/shared/datepicker/js/locales/bootstrap-datepicker.no.min.js

@@ -1 +1 @@
-!function(a){a.fn.datepicker.dates.no={days:["Søndag","Mandag","Tirsdag","Onsdag","Torsdag","Fredag","Lørdag"],daysShort:["Søn","Man","Tir","Ons","Tor","Fre","Lør"],daysMin:["Sø","Ma","Ti","On","To","Fr","Lø"],months:["Januar","Februar","Mars","April","Mai","Juni","Juli","August","September","Oktober","November","Desember"],monthsShort:["Jan","Feb","Mar","Apr","Mai","Jun","Jul","Aug","Sep","Okt","Nov","Des"],today:"I dag",clear:"Nullstill",weekStart:1,format:"dd.mm.yyyy"}}(jQuery);
+!function(a){a.fn.datepicker.dates.no={days:["søndag","mandag","tirsdag","onsdag","torsdag","fredag","lørdag"],daysShort:["søn","man","tir","ons","tor","fre","lør"],daysMin:["sø","ma","ti","on","to","fr","lø"],months:["januar","februar","mars","april","mai","juni","juli","august","september","oktober","november","desember"],monthsShort:["jan","feb","mar","apr","mai","jun","jul","aug","sep","okt","nov","des"],today:"i dag",monthsTitle:"Måneder",clear:"Nullstill",weekStart:1,format:"dd.mm.yyyy"}}(jQuery);