Fix logic for ShinySession$startCycle

The previous code could result in a call stack that keeps increasing in depth as it polls.

.Rbuildignore

@@ -12,7 +12,7 @@
 ^\.travis\.yml$
 ^staticdocs$
 ^tools$
-^srcts$
+^srcjs$
 ^CONTRIBUTING.md$
 ^cran-comments.md$
 ^.*\.o$
@@ -21,14 +21,3 @@
 ^TODO-promises.md$
 ^manualtests$
 ^\.github$
-^\.vscode$
-^\.madgerc$
-^package\.json$
-^tsconfig\.json$
-^package-lock\.json$
-^node_modules$
-^coverage$
-^.ignore$
-^eslint\.config\.mjs$
-^_dev$
-^.claude$

.gitattributes

@@ -1,6 +1,4 @@
 /NEWS merge=union
 /inst/www/shared/shiny.js -merge -diff
-/inst/www/shared/shiny-*.js -merge -diff
-/inst/www/shared/shiny*.css -merge -diff
 *.min.js -merge -diff
 *.js.map -merge -diff

.github/ISSUE_TEMPLATE/question.md

@@ -1,7 +1,7 @@
 ---
 name  : Ask a Question
-about : The issue tracker is not for questions -- please ask questions at https://forum.posit.co/tags/shiny.
+about : The issue tracker is not for questions -- please ask questions at https://community.rstudio.com/c/shiny.
 ---
 
-The issue tracker is not for questions. If you have a question, please feel free to ask it on our community site, at https://forum.posit.co/c/shiny.
+The issue tracker is not for questions. If you have a question, please feel free to ask it on our community site, at https://community.rstudio.com/c/shiny.
 

.github/shiny-workflows/routine.sh

@@ -1,13 +0,0 @@
-#!/bin/bash -e
-. ./tools/documentation/checkDocsCurrent.sh
-
-echo "Updating package.json version to match DESCRIPTION Version"
-Rscript ./tools/updatePackageJsonVersion.R
-if [ -n "$(git status --porcelain package.json)" ]
-then
-  echo "package.json has changed after running ./tools/updatePackageJsonVersion.R. Re-running 'npm run build'"
-  npm run build
-  git add ./inst package.json && git commit -m 'Sync package version (GitHub Actions)' || echo "No package version to commit"
-else
-  echo "No package version difference detected; package.json is current."
-fi

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

@@ -1,21 +1,198 @@
-# Workflow derived from https://github.com/rstudio/shiny-workflows
-#
-# NOTE: This Shiny team GHA workflow is overkill for most R packages.
-# For most R packages it is better to use https://github.com/r-lib/actions
+name: R-CMD-check
 on:
   push:
-    branches: [main, rc-**]
+    branches:
+      - master
   pull_request:
-    branches: [main]
-  schedule:
-    - cron: "0 5 * * 1" # every monday
+    branches:
+      - master
 
-name: Package checks
 
 jobs:
-  website:
-    uses: rstudio/shiny-workflows/.github/workflows/website.yaml@v1
-  routine:
-    uses: rstudio/shiny-workflows/.github/workflows/routine.yaml@v1
+
   R-CMD-check:
-    uses: rstudio/shiny-workflows/.github/workflows/R-CMD-check.yaml@v1
+    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"

.gitignore

@@ -9,16 +9,4 @@
 shinyapps/
 README.html
 .*.Rnb.cached
-/_dev/
-.sass_cache_keys
-
-# TypeScript
-/node_modules/
-.cache
-coverage/
-madge.svg
-
-
-# GHA remotes installation
-.github/r-depends.rds
-.claude/settings.local.json
+tools/yarn-error.log

.madgerc

@@ -1,7 +0,0 @@
-{
-  "detectiveOptions": {
-    "ts": {
-      "skipTypeImports": true
-    }
-  }
-}

.vscode/extensions.json

@@ -1,6 +0,0 @@
-{
-  "recommendations": [
-    "dbaeumer.vscode-eslint",
-    "esbenp.prettier-vscode"
-  ]
-}

.vscode/settings.json

@@ -1,22 +0,0 @@
-{
-  "search.exclude": {
-  },
-  "prettier.prettierPath": "./node_modules/prettier",
-  "typescript.enablePromptUseWorkspaceTsdk": true,
-  "[r]": {
-    "files.trimTrailingWhitespace": true,
-    "files.insertFinalNewline": true,
-  },
-  "[typescript]": {
-    "editor.defaultFormatter": "esbenp.prettier-vscode",
-    "editor.formatOnSave": true,
-    "files.trimTrailingWhitespace": true,
-    "files.insertFinalNewline": true,
-  },
-  "[json]": {
-    "editor.formatOnSave": true,
-    "editor.defaultFormatter": "esbenp.prettier-vscode",
-    "files.trimTrailingWhitespace": true,
-    "files.insertFinalNewline": true,
-},
-}

DESCRIPTION

@@ -1,132 +1,128 @@
-Type: Package
 Package: shiny
+Type: Package
 Title: Web Application Framework for R
-Version: 1.11.1.9000
+Version: 1.5.0.9005
 Authors@R: c(
-    person("Winston", "Chang", , "winston@posit.co", role = "aut",
-           comment = c(ORCID = "0000-0002-1576-2126")),
-    person("Joe", "Cheng", , "joe@posit.co", role = "aut"),
-    person("JJ", "Allaire", , "jj@posit.co", role = "aut"),
-    person("Carson", "Sievert", , "carson@posit.co", role = c("aut", "cre"),
-           comment = c(ORCID = "0000-0002-4958-2844")),
-    person("Barret", "Schloerke", , "barret@posit.co", role = "aut",
-           comment = c(ORCID = "0000-0001-9986-114X")),
-    person("Garrick", "Aden-Buie", , "garrick@adenbuie.com", role = "aut",
-           comment = c(ORCID = "0000-0002-7111-0077")),
-    person("Yihui", "Xie", , "yihui@posit.co", role = "aut"),
-    person("Jeff", "Allen", role = "aut"),
-    person("Jonathan", "McPherson", , "jonathan@posit.co", role = "aut"),
+    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("Posit Software, PBC", role = c("cph", "fnd"),
-           comment = c(ROR = "03wc8by49")),
-    person(, "jQuery Foundation", role = "cph",
-           comment = "jQuery library and jQuery UI library"),
-    person(, "jQuery contributors", role = c("ctb", "cph"),
-           comment = "jQuery library; authors listed in inst/www/shared/jquery-AUTHORS.txt"),
-    person(, "jQuery UI contributors", role = c("ctb", "cph"),
-           comment = "jQuery UI library; authors listed in inst/www/shared/jqueryui/AUTHORS.txt"),
+    person(family = "RStudio", role = "cph"),
+    person(family = "jQuery Foundation", role = "cph",
+    comment = "jQuery library and jQuery UI library"),
+    person(family = "jQuery contributors", role = c("ctb", "cph"),
+    comment = "jQuery library; authors listed in inst/www/shared/jquery-AUTHORS.txt"),
+    person(family = "jQuery UI contributors", role = c("ctb", "cph"),
+    comment = "jQuery UI library; authors listed in inst/www/shared/jqueryui/AUTHORS.txt"),
     person("Mark", "Otto", role = "ctb",
-           comment = "Bootstrap library"),
+    comment = "Bootstrap library"),
     person("Jacob", "Thornton", role = "ctb",
-           comment = "Bootstrap library"),
-    person(, "Bootstrap contributors", role = "ctb",
-           comment = "Bootstrap library"),
-    person(, "Twitter, Inc", role = "cph",
-           comment = "Bootstrap library"),
+    comment = "Bootstrap library"),
+    person(family = "Bootstrap contributors", role = "ctb",
+    comment = "Bootstrap library"),
+    person(family = "Twitter, Inc", role = "cph",
+    comment = "Bootstrap library"),
     person("Prem Nawaz", "Khan", role = "ctb",
-           comment = "Bootstrap accessibility plugin"),
+    comment = "Bootstrap accessibility plugin"),
     person("Victor", "Tsaran", role = "ctb",
-           comment = "Bootstrap accessibility plugin"),
+    comment = "Bootstrap accessibility plugin"),
     person("Dennis", "Lembree", role = "ctb",
-           comment = "Bootstrap accessibility plugin"),
+    comment = "Bootstrap accessibility plugin"),
     person("Srinivasu", "Chakravarthula", role = "ctb",
-           comment = "Bootstrap accessibility plugin"),
+    comment = "Bootstrap accessibility plugin"),
     person("Cathy", "O'Connor", role = "ctb",
-           comment = "Bootstrap accessibility plugin"),
-    person(, "PayPal, Inc", role = "cph",
-           comment = "Bootstrap accessibility plugin"),
+    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"),
+    comment = "Bootstrap-datepicker library"),
     person("Andrew", "Rowls", role = c("ctb", "cph"),
-           comment = "Bootstrap-datepicker library"),
+    comment = "Bootstrap-datepicker library"),
+    person("Dave", "Gandy", role = c("ctb", "cph"),
+    comment = "Font-Awesome font"),
     person("Brian", "Reavis", role = c("ctb", "cph"),
-           comment = "selectize.js library"),
+    comment = "selectize.js library"),
     person("Salmen", "Bejaoui", role = c("ctb", "cph"),
-           comment = "selectize-plugin-a11y library"),
+    comment = "selectize-plugin-a11y library"),
     person("Denis", "Ineshin", role = c("ctb", "cph"),
-           comment = "ion.rangeSlider library"),
+    comment = "ion.rangeSlider library"),
     person("Sami", "Samhuri", role = c("ctb", "cph"),
-           comment = "Javascript strftime library"),
-    person(, "SpryMedia Limited", role = c("ctb", "cph"),
-           comment = "DataTables library"),
+    comment = "Javascript strftime library"),
+    person(family = "SpryMedia Limited", role = c("ctb", "cph"),
+    comment = "DataTables library"),
     person("John", "Fraser", role = c("ctb", "cph"),
-           comment = "showdown.js library"),
+    comment = "showdown.js library"),
     person("John", "Gruber", role = c("ctb", "cph"),
-           comment = "showdown.js library"),
+    comment = "showdown.js library"),
     person("Ivan", "Sagalaev", role = c("ctb", "cph"),
-           comment = "highlight.js library"),
-    person("R Core Team", role = c("ctb", "cph"),
-           comment = "tar implementation from R")
-  )
+    comment = "highlight.js library"),
+    person(family = "R Core Team", role = c("ctb", "cph"),
+    comment = "tar implementation from R")
+    )
 Description: Makes it incredibly easy to build interactive web
     applications with R. Automatic "reactive" binding between inputs and
     outputs and extensive prebuilt widgets make it possible to build
     beautiful, responsive, and powerful applications with minimal effort.
 License: GPL-3 | file LICENSE
-URL: https://shiny.posit.co/, https://github.com/rstudio/shiny
-BugReports: https://github.com/rstudio/shiny/issues
 Depends:
-    methods,
-    R (>= 3.0.2)
+    R (>= 3.0.2),
+    methods
 Imports:
-    bslib (>= 0.6.0),
-    cachem (>= 1.1.0),
-    cli,
-    commonmark (>= 1.7),
-    fastmap (>= 1.1.1),
-    fontawesome (>= 0.4.0),
-    glue (>= 1.3.2),
-    grDevices,
-    htmltools (>= 0.5.4),
-    httpuv (>= 1.5.2),
-    jsonlite (>= 0.9.16),
-    later (>= 1.0.0),
-    lifecycle (>= 0.2.0),
-    mime (>= 0.3),
-    promises (>= 1.3.2),
-    R6 (>= 2.0),
-    rlang (>= 0.4.10),
-    sourcetools,
-    tools,
     utils,
+    grDevices,
+    httpuv (>= 1.5.2),
+    mime (>= 0.3),
+    jsonlite (>= 0.9.16),
+    xtable,
+    digest (>= 0.6.25),
+    htmltools (>= 0.5.0.9001),
+    R6 (>= 2.0),
+    sourcetools,
+    later (>= 1.0.0),
+    promises (>= 1.1.1.9001),
+    tools,
+    crayon,
+    rlang (>= 0.4.8.9002),
+    fastmap (>= 1.0.0),
     withr,
-    xtable
+    commonmark (>= 1.7),
+    glue (>= 1.3.2),
+    bslib (>= 0.2.2.9002),
+    cachem,
+    ellipsis
 Suggests:
-    Cairo (>= 1.5-5),
-    coro (>= 1.1.0),
     datasets,
-    DT,
-    dygraphs,
-    future,
-    ggplot2,
+    Cairo (>= 1.5-5),
+    testthat (>= 2.1.1),
     knitr (>= 1.6),
-    magrittr,
     markdown,
-    mirai,
-    ragg,
-    reactlog (>= 1.0.0),
     rmarkdown,
-    sass,
+    ggplot2,
+    reactlog (>= 1.0.0),
+    magrittr,
+    shinytest (>= 1.4.0.9003),
+    yaml,
+    future,
+    dygraphs,
+    ragg,
     showtext,
-    testthat (>= 3.2.1),
-    watcher,
-    yaml
-Config/Needs/check: shinytest2
-Config/testthat/edition: 3
-Encoding: UTF-8
-Roxygen: list(markdown = TRUE)
-RoxygenNote: 7.3.3
+    sass
+Remotes:
+    rstudio/htmltools,
+    rstudio/promises,
+    rstudio/sass,
+    rstudio/bslib,
+    rstudio/shinytest,
+    r-lib/cachem,
+    r-lib/rlang
+URL: http://shiny.rstudio.com
+BugReports: https://github.com/rstudio/shiny/issues
 Collate:
     'globals.R'
     'app-state.R'
@@ -134,6 +130,7 @@ Collate:
     'bind-cache.R'
     'bind-event.R'
     'bookmark-state-local.R'
+    'stack.R'
     'bookmark-state.R'
     'bootstrap-deprecated.R'
     'bootstrap-layout.R'
@@ -141,20 +138,18 @@ Collate:
     'map.R'
     'utils.R'
     'bootstrap.R'
-    'busy-indicators-spinners.R'
-    'busy-indicators.R'
     'cache-utils.R'
     'deprecated.R'
-    'devmode.R'
     'diagnose.R'
-    'extended-task.R'
     'fileupload.R'
+    'font-awesome.R'
     'graph.R'
     'reactives.R'
     'reactive-domains.R'
     'history.R'
     'hooks.R'
     'html-deps.R'
+    'htmltools.R'
     'image-interact-opts.R'
     'image-interact.R'
     'imageutils.R'
@@ -199,24 +194,18 @@ Collate:
     'server-resource-paths.R'
     'server.R'
     'shiny-options.R'
-    'shiny-package.R'
     'shinyapp.R'
     'shinyui.R'
     'shinywrappers.R'
     'showcase.R'
     'snapshot.R'
-    'staticimports.R'
     'tar.R'
     'test-export.R'
     'test-server.R'
     'test.R'
     'update-input.R'
     'utils-lang.R'
-    'utils-tags.R'
-    'version_bs_date_picker.R'
-    'version_ion_range_slider.R'
-    'version_jquery.R'
-    'version_jqueryui.R'
-    'version_selectize.R'
-    'version_strftime.R'
     'viewer.R'
+RoxygenNote: 7.1.1
+Encoding: UTF-8
+Roxygen: list(markdown = TRUE)

LICENSE

@@ -10,6 +10,7 @@ these components are included below):
 - Bootstrap, https://github.com/twbs/bootstrap
 - 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
 - selectize-plugin-a11y, https://github.com/SLMNBJ/selectize-plugin-a11y
 - ion.rangeSlider, https://github.com/IonDen/ion.rangeSlider
@@ -307,6 +308,449 @@ bootstrap-datepicker
    limitations under the License.
 
 
+Font Awesome (CSS files are MIT licensed; fonts have SIL Open Font License 1.1, svgs have CC BY 4.0 License)
+----------------------------------------------------------------------
+
+The MIT License (MIT)
+
+Copyright (c) 2014 Dave Gandy
+
+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, Dave Gandy http://fontawesome.io/,
+with Reserved Font Name Font Awesome.
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+http://scripts.sil.org/OFL
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded,
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.
+
+=======================================================================
+
+Creative Commons Attribution 4.0 International Public License
+
+By exercising the Licensed Rights (defined below), You accept and agree
+to be bound by the terms and conditions of this Creative Commons
+Attribution 4.0 International Public License ("Public License"). To the
+extent this Public License may be interpreted as a contract, You are
+granted the Licensed Rights in consideration of Your acceptance of
+these terms and conditions, and the Licensor grants You such rights in
+consideration of benefits the Licensor receives from making the
+Licensed Material available under these terms and conditions.
+
+
+Section 1 -- Definitions.
+
+  a. Adapted Material means material subject to Copyright and Similar
+     Rights that is derived from or based upon the Licensed Material
+     and in which the Licensed Material is translated, altered,
+     arranged, transformed, or otherwise modified in a manner requiring
+     permission under the Copyright and Similar Rights held by the
+     Licensor. For purposes of this Public License, where the Licensed
+     Material is a musical work, performance, or sound recording,
+     Adapted Material is always produced where the Licensed Material is
+     synched in timed relation with a moving image.
+
+  b. Adapter's License means the license You apply to Your Copyright
+     and Similar Rights in Your contributions to Adapted Material in
+     accordance with the terms and conditions of this Public License.
+
+  c. Copyright and Similar Rights means copyright and/or similar rights
+     closely related to copyright including, without limitation,
+     performance, broadcast, sound recording, and Sui Generis Database
+     Rights, without regard to how the rights are labeled or
+     categorized. For purposes of this Public License, the rights
+     specified in Section 2(b)(1)-(2) are not Copyright and Similar
+     Rights.
+
+  d. Effective Technological Measures means those measures that, in the
+     absence of proper authority, may not be circumvented under laws
+     fulfilling obligations under Article 11 of the WIPO Copyright
+     Treaty adopted on December 20, 1996, and/or similar international
+     agreements.
+
+  e. Exceptions and Limitations means fair use, fair dealing, and/or
+     any other exception or limitation to Copyright and Similar Rights
+     that applies to Your use of the Licensed Material.
+
+  f. Licensed Material means the artistic or literary work, database,
+     or other material to which the Licensor applied this Public
+     License.
+
+  g. Licensed Rights means the rights granted to You subject to the
+     terms and conditions of this Public License, which are limited to
+     all Copyright and Similar Rights that apply to Your use of the
+     Licensed Material and that the Licensor has authority to license.
+
+  h. Licensor means the individual(s) or entity(ies) granting rights
+     under this Public License.
+
+  i. Share means to provide material to the public by any means or
+     process that requires permission under the Licensed Rights, such
+     as reproduction, public display, public performance, distribution,
+     dissemination, communication, or importation, and to make material
+     available to the public including in ways that members of the
+     public may access the material from a place and at a time
+     individually chosen by them.
+
+  j. Sui Generis Database Rights means rights other than copyright
+     resulting from Directive 96/9/EC of the European Parliament and of
+     the Council of 11 March 1996 on the legal protection of databases,
+     as amended and/or succeeded, as well as other essentially
+     equivalent rights anywhere in the world.
+
+  k. You means the individual or entity exercising the Licensed Rights
+     under this Public License. Your has a corresponding meaning.
+
+
+Section 2 -- Scope.
+
+  a. License grant.
+
+       1. Subject to the terms and conditions of this Public License,
+          the Licensor hereby grants You a worldwide, royalty-free,
+          non-sublicensable, non-exclusive, irrevocable license to
+          exercise the Licensed Rights in the Licensed Material to:
+
+            a. reproduce and Share the Licensed Material, in whole or
+               in part; and
+
+            b. produce, reproduce, and Share Adapted Material.
+
+       2. Exceptions and Limitations. For the avoidance of doubt, where
+          Exceptions and Limitations apply to Your use, this Public
+          License does not apply, and You do not need to comply with
+          its terms and conditions.
+
+       3. Term. The term of this Public License is specified in Section
+          6(a).
+
+       4. Media and formats; technical modifications allowed. The
+          Licensor authorizes You to exercise the Licensed Rights in
+          all media and formats whether now known or hereafter created,
+          and to make technical modifications necessary to do so. The
+          Licensor waives and/or agrees not to assert any right or
+          authority to forbid You from making technical modifications
+          necessary to exercise the Licensed Rights, including
+          technical modifications necessary to circumvent Effective
+          Technological Measures. For purposes of this Public License,
+          simply making modifications authorized by this Section 2(a)
+          (4) never produces Adapted Material.
+
+       5. Downstream recipients.
+
+            a. Offer from the Licensor -- Licensed Material. Every
+               recipient of the Licensed Material automatically
+               receives an offer from the Licensor to exercise the
+               Licensed Rights under the terms and conditions of this
+               Public License.
+
+            b. No downstream restrictions. You may not offer or impose
+               any additional or different terms or conditions on, or
+               apply any Effective Technological Measures to, the
+               Licensed Material if doing so restricts exercise of the
+               Licensed Rights by any recipient of the Licensed
+               Material.
+
+       6. No endorsement. Nothing in this Public License constitutes or
+          may be construed as permission to assert or imply that You
+          are, or that Your use of the Licensed Material is, connected
+          with, or sponsored, endorsed, or granted official status by,
+          the Licensor or others designated to receive attribution as
+          provided in Section 3(a)(1)(A)(i).
+
+  b. Other rights.
+
+       1. Moral rights, such as the right of integrity, are not
+          licensed under this Public License, nor are publicity,
+          privacy, and/or other similar personality rights; however, to
+          the extent possible, the Licensor waives and/or agrees not to
+          assert any such rights held by the Licensor to the limited
+          extent necessary to allow You to exercise the Licensed
+          Rights, but not otherwise.
+
+       2. Patent and trademark rights are not licensed under this
+          Public License.
+
+       3. To the extent possible, the Licensor waives any right to
+          collect royalties from You for the exercise of the Licensed
+          Rights, whether directly or through a collecting society
+          under any voluntary or waivable statutory or compulsory
+          licensing scheme. In all other cases the Licensor expressly
+          reserves any right to collect such royalties.
+
+
+Section 3 -- License Conditions.
+
+Your exercise of the Licensed Rights is expressly made subject to the
+following conditions.
+
+  a. Attribution.
+
+       1. If You Share the Licensed Material (including in modified
+          form), You must:
+
+            a. retain the following if it is supplied by the Licensor
+               with the Licensed Material:
+
+                 i. identification of the creator(s) of the Licensed
+                    Material and any others designated to receive
+                    attribution, in any reasonable manner requested by
+                    the Licensor (including by pseudonym if
+                    designated);
+
+                ii. a copyright notice;
+
+               iii. a notice that refers to this Public License;
+
+                iv. a notice that refers to the disclaimer of
+                    warranties;
+
+                 v. a URI or hyperlink to the Licensed Material to the
+                    extent reasonably practicable;
+
+            b. indicate if You modified the Licensed Material and
+               retain an indication of any previous modifications; and
+
+            c. indicate the Licensed Material is licensed under this
+               Public License, and include the text of, or the URI or
+               hyperlink to, this Public License.
+
+       2. You may satisfy the conditions in Section 3(a)(1) in any
+          reasonable manner based on the medium, means, and context in
+          which You Share the Licensed Material. For example, it may be
+          reasonable to satisfy the conditions by providing a URI or
+          hyperlink to a resource that includes the required
+          information.
+
+       3. If requested by the Licensor, You must remove any of the
+          information required by Section 3(a)(1)(A) to the extent
+          reasonably practicable.
+
+       4. If You Share Adapted Material You produce, the Adapter's
+          License You apply must not prevent recipients of the Adapted
+          Material from complying with this Public License.
+
+
+Section 4 -- Sui Generis Database Rights.
+
+Where the Licensed Rights include Sui Generis Database Rights that
+apply to Your use of the Licensed Material:
+
+  a. for the avoidance of doubt, Section 2(a)(1) grants You the right
+     to extract, reuse, reproduce, and Share all or a substantial
+     portion of the contents of the database;
+
+  b. if You include all or a substantial portion of the database
+     contents in a database in which You have Sui Generis Database
+     Rights, then the database in which You have Sui Generis Database
+     Rights (but not its individual contents) is Adapted Material; and
+
+  c. You must comply with the conditions in Section 3(a) if You Share
+     all or a substantial portion of the contents of the database.
+
+For the avoidance of doubt, this Section 4 supplements and does not
+replace Your obligations under this Public License where the Licensed
+Rights include other Copyright and Similar Rights.
+
+
+Section 5 -- Disclaimer of Warranties and Limitation of Liability.
+
+  a. UNLESS OTHERWISE SEPARATELY UNDERTAKEN BY THE LICENSOR, TO THE
+     EXTENT POSSIBLE, THE LICENSOR OFFERS THE LICENSED MATERIAL AS-IS
+     AND AS-AVAILABLE, AND MAKES NO REPRESENTATIONS OR WARRANTIES OF
+     ANY KIND CONCERNING THE LICENSED MATERIAL, WHETHER EXPRESS,
+     IMPLIED, STATUTORY, OR OTHER. THIS INCLUDES, WITHOUT LIMITATION,
+     WARRANTIES OF TITLE, MERCHANTABILITY, FITNESS FOR A PARTICULAR
+     PURPOSE, NON-INFRINGEMENT, ABSENCE OF LATENT OR OTHER DEFECTS,
+     ACCURACY, OR THE PRESENCE OR ABSENCE OF ERRORS, WHETHER OR NOT
+     KNOWN OR DISCOVERABLE. WHERE DISCLAIMERS OF WARRANTIES ARE NOT
+     ALLOWED IN FULL OR IN PART, THIS DISCLAIMER MAY NOT APPLY TO YOU.
+
+  b. TO THE EXTENT POSSIBLE, IN NO EVENT WILL THE LICENSOR BE LIABLE
+     TO YOU ON ANY LEGAL THEORY (INCLUDING, WITHOUT LIMITATION,
+     NEGLIGENCE) OR OTHERWISE FOR ANY DIRECT, SPECIAL, INDIRECT,
+     INCIDENTAL, CONSEQUENTIAL, PUNITIVE, EXEMPLARY, OR OTHER LOSSES,
+     COSTS, EXPENSES, OR DAMAGES ARISING OUT OF THIS PUBLIC LICENSE OR
+     USE OF THE LICENSED MATERIAL, EVEN IF THE LICENSOR HAS BEEN
+     ADVISED OF THE POSSIBILITY OF SUCH LOSSES, COSTS, EXPENSES, OR
+     DAMAGES. WHERE A LIMITATION OF LIABILITY IS NOT ALLOWED IN FULL OR
+     IN PART, THIS LIMITATION MAY NOT APPLY TO YOU.
+
+  c. The disclaimer of warranties and limitation of liability provided
+     above shall be interpreted in a manner that, to the extent
+     possible, most closely approximates an absolute disclaimer and
+     waiver of all liability.
+
+
+Section 6 -- Term and Termination.
+
+  a. This Public License applies for the term of the Copyright and
+     Similar Rights licensed here. However, if You fail to comply with
+     this Public License, then Your rights under this Public License
+     terminate automatically.
+
+  b. Where Your right to use the Licensed Material has terminated under
+     Section 6(a), it reinstates:
+
+       1. automatically as of the date the violation is cured, provided
+          it is cured within 30 days of Your discovery of the
+          violation; or
+
+       2. upon express reinstatement by the Licensor.
+
+     For the avoidance of doubt, this Section 6(b) does not affect any
+     right the Licensor may have to seek remedies for Your violations
+     of this Public License.
+
+  c. For the avoidance of doubt, the Licensor may also offer the
+     Licensed Material under separate terms or conditions or stop
+     distributing the Licensed Material at any time; however, doing so
+     will not terminate this Public License.
+
+  d. Sections 1, 5, 6, 7, and 8 survive termination of this Public
+     License.
+
+
+Section 7 -- Other Terms and Conditions.
+
+  a. The Licensor shall not be bound by any additional or different
+     terms or conditions communicated by You unless expressly agreed.
+
+  b. Any arrangements, understandings, or agreements regarding the
+     Licensed Material not stated herein are separate from and
+     independent of the terms and conditions of this Public License.
+
+
+Section 8 -- Interpretation.
+
+  a. For the avoidance of doubt, this Public License does not, and
+     shall not be interpreted to, reduce, limit, restrict, or impose
+     conditions on any use of the Licensed Material that could lawfully
+     be made without permission under this Public License.
+
+  b. To the extent possible, if any provision of this Public License is
+     deemed unenforceable, it shall be automatically reformed to the
+     minimum extent necessary to make it enforceable. If the provision
+     cannot be reformed, it shall be severed from this Public License
+     without affecting the enforceability of the remaining terms and
+     conditions.
+
+  c. No term or condition of this Public License will be waived and no
+     failure to comply consented to unless expressly agreed to by the
+     Licensor.
+
+  d. Nothing in this Public License constitutes or may be interpreted
+     as a limitation upon, or waiver of, any privileges and immunities
+     that apply to the Licensor or You, including from the legal
+     processes of any jurisdiction or authority.
+
+
 selectize.js
 ----------------------------------------------------------------------
 

NAMESPACE

@@ -19,7 +19,6 @@ S3method("[[",shinyoutput)
 S3method("[[<-",reactivevalues)
 S3method("[[<-",shinyoutput)
 S3method("names<-",reactivevalues)
-S3method(as.list,Map)
 S3method(as.list,reactivevalues)
 S3method(as.shiny.appobj,character)
 S3method(as.shiny.appobj,list)
@@ -44,7 +43,6 @@ S3method(bindEvent,reactiveExpr)
 S3method(bindEvent,shiny.render.function)
 S3method(format,reactiveExpr)
 S3method(format,reactiveVal)
-S3method(length,Map)
 S3method(names,reactivevalues)
 S3method(print,reactive)
 S3method(print,reactivevalues)
@@ -55,7 +53,6 @@ S3method(str,reactivevalues)
 export("conditionStackTrace<-")
 export(..stacktraceoff..)
 export(..stacktraceon..)
-export(ExtendedTask)
 export(HTML)
 export(MockShinySession)
 export(NS)
@@ -78,7 +75,6 @@ export(br)
 export(browserViewer)
 export(brushOpts)
 export(brushedPoints)
-export(busyIndicatorOptions)
 export(callModule)
 export(captureStackTraces)
 export(checkboxGroupInput)
@@ -95,7 +91,6 @@ export(dateInput)
 export(dateRangeInput)
 export(dblclickOpts)
 export(debounce)
-export(devmode)
 export(dialogViewer)
 export(diskCache)
 export(div)
@@ -107,6 +102,7 @@ export(enableBookmarking)
 export(eventReactive)
 export(exportTestValues)
 export(exprToFunction)
+export(extractStackTrace)
 export(fileInput)
 export(fillCol)
 export(fillPage)
@@ -117,6 +113,7 @@ export(fixedRow)
 export(flowLayout)
 export(fluidPage)
 export(fluidRow)
+export(formatStackTrace)
 export(freezeReactiveVal)
 export(freezeReactiveValue)
 export(getCurrentOutputInfo)
@@ -125,7 +122,6 @@ export(getDefaultReactiveDomain)
 export(getQueryString)
 export(getShinyOption)
 export(getUrlHash)
-export(get_devmode_option)
 export(h1)
 export(h2)
 export(h3)
@@ -143,7 +139,6 @@ export(httpResponse)
 export(icon)
 export(imageOutput)
 export(img)
-export(in_devmode)
 export(incProgress)
 export(includeCSS)
 export(includeHTML)
@@ -192,7 +187,6 @@ export(onRestore)
 export(onRestored)
 export(onSessionEnded)
 export(onStop)
-export(onUnhandledError)
 export(outputOptions)
 export(p)
 export(pageWithSidebar)
@@ -210,18 +204,21 @@ export(radioButtons)
 export(reactive)
 export(reactiveConsole)
 export(reactiveFileReader)
+export(reactivePlot)
 export(reactivePoll)
+export(reactivePrint)
+export(reactiveTable)
+export(reactiveText)
 export(reactiveTimer)
+export(reactiveUI)
 export(reactiveVal)
 export(reactiveValues)
 export(reactiveValuesToList)
 export(reactlog)
-export(reactlogAddMark)
 export(reactlogReset)
 export(reactlogShow)
 export(registerInputHandler)
 export(registerThemeDependency)
-export(register_devmode_option)
 export(removeInputHandler)
 export(removeModal)
 export(removeNotification)
@@ -264,6 +261,7 @@ export(shinyUI)
 export(showBookmarkUrlModal)
 export(showModal)
 export(showNotification)
+export(showReactLog)
 export(showTab)
 export(sidebarLayout)
 export(sidebarPanel)
@@ -319,7 +317,6 @@ export(updateTextInput)
 export(updateVarSelectInput)
 export(updateVarSelectizeInput)
 export(urlModal)
-export(useBusyIndicators)
 export(validate)
 export(validateCssUnit)
 export(varSelectInput)
@@ -332,13 +329,16 @@ export(withMathJax)
 export(withProgress)
 export(withReactiveDomain)
 export(withTags)
-export(with_devmode)
 import(R6)
+import(digest)
 import(htmltools)
 import(httpuv)
 import(methods)
 import(mime)
 import(xtable)
+importFrom(digest,digest)
+importFrom(ellipsis,check_dots_empty)
+importFrom(ellipsis,check_dots_unnamed)
 importFrom(fastmap,fastmap)
 importFrom(fastmap,is.key_missing)
 importFrom(fastmap,key_missing)
@@ -382,8 +382,6 @@ importFrom(htmltools,tagSetChildren)
 importFrom(htmltools,tags)
 importFrom(htmltools,validateCssUnit)
 importFrom(htmltools,withTags)
-importFrom(lifecycle,deprecated)
-importFrom(lifecycle,is_present)
 importFrom(promises,"%...!%")
 importFrom(promises,"%...>%")
 importFrom(promises,as.promise)
@@ -392,36 +390,21 @@ importFrom(promises,promise)
 importFrom(promises,promise_reject)
 importFrom(promises,promise_resolve)
 importFrom(rlang,"%||%")
-importFrom(rlang,"fn_body<-")
-importFrom(rlang,"fn_fmls<-")
 importFrom(rlang,as_function)
 importFrom(rlang,as_quosure)
-importFrom(rlang,check_dots_empty)
-importFrom(rlang,check_dots_unnamed)
 importFrom(rlang,enexpr)
 importFrom(rlang,enquo)
-importFrom(rlang,enquo0)
 importFrom(rlang,enquos)
 importFrom(rlang,enquos0)
 importFrom(rlang,eval_tidy)
 importFrom(rlang,expr)
-importFrom(rlang,fn_body)
 importFrom(rlang,get_env)
 importFrom(rlang,get_expr)
 importFrom(rlang,inject)
-importFrom(rlang,is_false)
-importFrom(rlang,is_missing)
 importFrom(rlang,is_na)
 importFrom(rlang,is_quosure)
-importFrom(rlang,list2)
-importFrom(rlang,maybe_missing)
-importFrom(rlang,missing_arg)
 importFrom(rlang,new_function)
 importFrom(rlang,new_quosure)
 importFrom(rlang,pairlist2)
 importFrom(rlang,quo)
-importFrom(rlang,quo_get_expr)
-importFrom(rlang,quo_is_missing)
-importFrom(rlang,quo_set_env)
-importFrom(rlang,quo_set_expr)
 importFrom(rlang,zap_srcref)

R/app_template.R

@@ -10,7 +10,8 @@
 #' 2: app.R              : Main application file
 #' 3: R/example.R        : Helper file with R code
 #' 4: R/example-module.R : Example module
-#' 5: tests/testthat/    : Tests using the testthat and shinytest2 package
+#' 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
@@ -23,12 +24,13 @@
 #' |   |- example-module.R
 #' |   `- example.R
 #' `- tests
+#'     |- shinytest.R
+#'     |- shinytest
+#'     |   `- mytest.R
 #'     |- testthat.R
 #'     `- testthat
-#'         |- setup-shinytest2.R
 #'         |- test-examplemodule.R
 #'         |- test-server.R
-#'         |- test-shinytest2.R
 #'         `- test-sort.R
 #' ```
 #'
@@ -43,21 +45,20 @@
 #' * `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
-#'   [shinytest2](https://rstudio.github.io/shinytest2/reference/test_app.html)
-#'   package.
-#' * `tests/testthat/setup-shinytest2.R` is setup file to source your `./R` folder into the testing environment.
+#'   `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-shinytest2.R` is a test that uses the
-#'   [shinytest2](https://rstudio.github.io/shinytest2/) package to do
-#'   snapshot-based testing.
 #' * `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", and "tests". In an
+#'   "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
@@ -78,19 +79,15 @@ shinyAppTemplate <- function(path = NULL, examples = "default", dryrun = FALSE)
   # =======================================================
 
   choices <- c(
-    app    = "app.R              : Main application file",
-    rdir   = "R/example.R        : Helper file with R code",
-    module = "R/example-module.R : Example module",
-    tests  = "tests/testthat/    : Tests using {testthat} and {shinytest2}"
+    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"
   )
 
-  # Support legacy value
-  examples[examples == "shinytest"] <- "tests"
-  examples[examples == "testthat"] <- "tests"
-  examples <- unique(examples)
-
   if (identical(examples, "default")) {
-    if (rlang::is_interactive()) {
+    if (interactive()) {
       examples <- "ask"
     } else {
       examples <- "all"
@@ -127,8 +124,18 @@ shinyAppTemplate <- function(path = NULL, examples = "default", dryrun = FALSE)
     return(invisible())
   }
 
-  if ("tests" %in% examples) {
-    rlang::check_installed("shinytest2", "for {testthat} tests to work as expected", version = "0.2.0")
+  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.")
+      }
+
+    }
   }
 
   # =======================================================
@@ -145,7 +152,7 @@ shinyAppTemplate <- function(path = NULL, examples = "default", dryrun = FALSE)
 
   # Helper to resolve paths relative to our template
   template_path <- function(...) {
-    system_file("app_template", ..., package = "shiny")
+    system.file("app_template", ..., package = "shiny")
   }
 
   # Resolve path relative to destination
@@ -201,13 +208,16 @@ shinyAppTemplate <- function(path = NULL, examples = "default", dryrun = FALSE)
   }
 
   # Copy the files for a tests/ subdirectory
-  copy_test_dir <- function() {
+  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|shinytest2|testthat", basename(files))
+      is_r_folder_file <- (!grepl("module|server", basename(files))) & (dirname(files) == "testthat")
       files <- files[!is_r_folder_file]
     }
 
@@ -272,10 +282,12 @@ shinyAppTemplate <- function(path = NULL, examples = "default", dryrun = FALSE)
     copy_file(file.path("R", module_files))
   }
 
-  # tests/testthat dir
-  if ("tests" %in% examples) {
-    copy_test_dir()
+  # tests/ dir
+  if ("shinytest" %in% examples) {
+    copy_test_dir("shinytest")
+  }
+  if ("testthat" %in% examples) {
+    copy_test_dir("testthat")
   }
-
   invisible()
 }

R/bind-cache.R

@@ -62,7 +62,7 @@ utils::globalVariables(".GenericCallEnv", add = TRUE)
 #'   bindCache({ extract_most_recent_time(bigdata()) })
 #' ```
 #'
-#' For computations that are very slow, it often makes sense to pair
+#' For computations that are vert slow, it often makes sense to pair
 #' [bindCache()] with [bindEvent()] so that no computation is performed until
 #' the user explicitly requests it (for more, see the Details section of
 #' [bindEvent()]).
@@ -155,19 +155,19 @@ utils::globalVariables(".GenericCallEnv", add = TRUE)
 #'   instead of the default 200 MB:
 #'
 #'   ```
-#'   shinyOptions(cache = cachem::cache_mem(max_size = 500e6))
+#'   shinyOptions(cache = cachem::cache_mem(size = 500e6))
 #'   ```
 #'
 #'   To use different settings for a session-scoped cache, you can set
-#'   `session$cache` at the top of your server function. By default, it will
-#'   create a 200 MB memory cache for each session, but you can replace it with
+#'   `self$cache` at the top of your server function. By default, it will create
+#'   a 200 MB memory cache for each session, but you can replace it with
 #'   something different. To use the session-scoped cache, you must also call
 #'   `bindCache()` with `cache="session"`. This will create a 100 MB cache for
 #'   the session:
 #'
 #'   ```
 #'   function(input, output, session) {
-#'     session$cache <- cachem::cache_mem(max_size = 100e6)
+#'     session$cache <- cachem::cache_mem(size = 100e6)
 #'     ...
 #'   }
 #'   ```
@@ -177,7 +177,7 @@ utils::globalVariables(".GenericCallEnv", add = TRUE)
 #'   cache by putting this at the top of your app.R, server.R, or global.R:
 #'
 #'   ```
-#'   shinyOptions(cache = cachem::cache_disk(file.path(dirname(tempdir()), "myapp-cache")))
+#'   shinyOptions(cache = cachem::cache_disk(file.path(dirname(tempdir()), "myapp-cache"))
 #'   ```
 #'
 #'   This will create a subdirectory in your system temp directory named
@@ -231,8 +231,8 @@ utils::globalVariables(".GenericCallEnv", add = TRUE)
 #'   promises, but rather objects provided by the
 #'   \href{https://rstudio.github.io/promises/}{\pkg{promises}}  package, which
 #'   are similar to promises in JavaScript. (See [promises::promise()] for more
-#'   information.) You can also use [mirai::mirai()] or [future::future()]
-#'   objects to run code in a separate process or even on a remote machine.
+#'   information.) You can also use [future::future()] objects to run code in a
+#'   separate process or even on a remote machine.
 #'
 #'   If the value returns a promise, then anything that consumes the cached
 #'   reactive must expect it to return a promise.
@@ -247,15 +247,9 @@ utils::globalVariables(".GenericCallEnv", add = TRUE)
 #'
 #' @section Developing render functions for caching:
 #'
-#'   If you've implemented your own `render*()` function, it may just work with
-#'   `bindCache()`, but it is possible that you will need to make some
-#'   modifications. These modifications involve helping `bindCache()` avoid
-#'   cache collisions, dealing with internal state that may be set by the,
-#'   `render` function, and modifying the data as it goes in and comes out of
-#'   the cache.
-#'
-#'   You may need to provide a `cacheHint` to [createRenderFunction()] (or
-#'   `htmlwidgets::shinyRenderWidget()`, if you've authored an htmlwidget) in
+#'   If you've implemented your own `render*()` function, you may need to
+#'   provide a `cacheHint` to [createRenderFunction()] (or
+#'   [htmlwidgets::shinyRenderWidget()], if you've authored an htmlwidget) in
 #'   order for `bindCache()` to correctly compute a cache key.
 #'
 #'   The potential problem is a cache collision. Consider the following:
@@ -292,12 +286,12 @@ utils::globalVariables(".GenericCallEnv", add = TRUE)
 #'   In some cases, however, the automatic cache hint inference is not
 #'   sufficient, and it is necessary to provide a cache hint. This is true
 #'   for `renderPrint()`. Unlike `renderText()`, it wraps the user-provided
-#'   expression in another function, before passing it to [createRenderFunction()]
+#'   expression in another function, before passing it to [markRenderFunction()]
 #'   (instead of [createRenderFunction()]). Because the user code is wrapped in
-#'   another function, `createRenderFunction()` is not able to automatically
-#'   extract the user-provided code and use it in the cache key. Instead,
-#'   `renderPrint` calls `createRenderFunction()`, it explicitly passes along a
-#'   `cacheHint`, which includes a label and the original user expression.
+#'   another function, markRenderFunction() is not able to automatically extract
+#'   the user-provided code and use it in the cache key. Instead, `renderPrint`
+#'   calls `markRenderFunction()`, it explicitly passes along a `cacheHint`,
+#'   which includes a label and the original user expression.
 #'
 #'   In general, if you need to provide a `cacheHint`, it is best practice to
 #'   provide a `label` id, the user's `expr`, as well as any other arguments
@@ -310,28 +304,17 @@ utils::globalVariables(".GenericCallEnv", add = TRUE)
 #'
 #'   ```
 #'   renderMyWidget <- function(expr) {
-#'     q <- rlang::enquo0(expr)
+#'     expr <- substitute(expr)
 #'
-#'     htmlwidgets::shinyRenderWidget(
-#'       q,
+#'     htmlwidgets::shinyRenderWidget(expr,
 #'       myWidgetOutput,
 #'       quoted = TRUE,
-#'       cacheHint = list(label = "myWidget", userQuo = q)
+#'       env = parent.frame(),
+#'       cacheHint = list(label = "myWidget", userExpr = expr)
 #'     )
 #'   }
 #'   ```
 #'
-#'   If your `render` function sets any internal state, you may find it useful
-#'   in your call to [createRenderFunction()] to use
-#'   the `cacheWriteHook` and/or `cacheReadHook` parameters. These hooks are
-#'   functions that run just before the object is stored in the cache, and just
-#'   after the object is retrieved from the cache. They can modify the data
-#'   that is stored and retrieved; this can be useful if extra information needs
-#'   to be stored in the cache. They can also be used to modify the state of the
-#'   application; for example, it can call [createWebDependency()] to make
-#'   JS/CSS resources available if the cached object is loaded in a different R
-#'   process. (See the source of `htmlwidgets::shinyRenderWidget` for an example
-#'   of this.)
 #'
 #' @section Uncacheable objects:
 #'
@@ -339,8 +322,8 @@ utils::globalVariables(".GenericCallEnv", add = TRUE)
 #'   effects or modify some external state, and they must re-execute each time
 #'   in order to work properly.
 #'
-#'   For developers of such code, they should call [createRenderFunction()] (or
-#'   [markRenderFunction()]) with `cacheHint = FALSE`.
+#'   For developers of such code, they should call [createRenderFunction()] or
+#'   [markRenderFunction()] with `cacheHint = FALSE`.
 #'
 #'
 #' @section Caching with `renderPlot()`:
@@ -453,7 +436,7 @@ utils::globalVariables(".GenericCallEnv", add = TRUE)
 #'       bindEvent(input$go)
 #'       # The cached, eventified reactive takes a reactive dependency on
 #'       # input$go, but doesn't use it for the cache key. It uses input$x and
-#'       # input$y for the cache key, but doesn't take a reactive dependency on
+#'       # input$y for the cache key, but doesn't take a reactive depdency on
 #'       # them, because the reactive dependency is superseded by addEvent().
 #'
 #'     output$txt <- renderText(r())
@@ -487,7 +470,7 @@ bindCache.reactiveExpr <- function(x, ..., cache = "app") {
   valueFunc <- reactive_get_value_func(x)
   # Hash cache hint now -- this will be added to the key later on, to reduce the
   # chance of key collisions with other cachedReactives.
-  cacheHint <- rlang::hash(extractCacheHint(x))
+  cacheHint <- digest(extractCacheHint(x), algo = "spookyhash")
   valueFunc <- wrapFunctionLabel(valueFunc, "cachedReactiveValueFunc", ..stacktraceon = TRUE)
 
   # Don't hold on to the reference for x, so that it can be GC'd
@@ -517,7 +500,7 @@ bindCache.shiny.render.function <- function(x, ..., cache = "app") {
 
   keyFunc <- quos_to_func(enquos0(...))
 
-  cacheHint <- rlang::hash(extractCacheHint(x))
+  cacheHint <- digest(extractCacheHint(x), algo = "spookyhash")
 
   cacheWriteHook <- attr(x, "cacheWriteHook", exact = TRUE) %||% identity
   cacheReadHook  <- attr(x, "cacheReadHook",  exact = TRUE) %||% identity
@@ -675,7 +658,7 @@ generateCacheFun <- function(
   ...
 ) {
   function(cacheKeyResult) {
-    key_str <- rlang::hash(list(cacheKeyResult, cacheHint))
+    key_str <- digest(list(cacheKeyResult, cacheHint), algo = "spookyhash")
     res <- cache$get(key_str)
 
     # Case 1: cache hit

R/bind-event.R

@@ -8,12 +8,6 @@
 #' the `...` arguments, and not on the original object's code. This can, for
 #' example, be used to make an observer execute only when a button is pressed.
 #'
-#' `bindEvent()` was added in Shiny 1.6.0. When it is used with [reactive()] and
-#' [observe()], it does the same thing as [eventReactive()] and
-#' [observeEvent()]. However, `bindEvent()` is more flexible: it can be combined
-#' with [bindCache()], and it can also be used with `render` functions (like
-#' [renderText()] and [renderPlot()]).
-#'
 #' @section Details:
 #'
 #'   Shiny's reactive programming framework is primarily designed for calculated
@@ -37,17 +31,16 @@
 #'   the original object's code to execute.
 #'
 #'   Use `bindEvent()` with `observe()` whenever you want to *perform an action*
-#'   in response to an event. (This does the same thing as [observeEvent()],
-#'   which was available in Shiny prior to version 1.6.0.) Note that
-#'   "recalculate a value" does not generally count as performing an action --
-#'   use [reactive()] for that.
+#'   in response to an event. (Note that "recalculate a value" does not
+#'   generally count as performing an action -- use [reactive()] for that.) The
+#'   first argument is observer whose code should be executed whenever the event
+#'   occurs.
 #'
-#'   Use `bindEvent()` with `reactive()` to create a *calculated value* that
-#'   only updates in response to an event. This is just like a normal [reactive
+#'   Use `bindEvent()` with `reactive()` to create a *calculated value* that only
+#'   updates in response to an event. This is just like a normal [reactive
 #'   expression][reactive] except it ignores all the usual invalidations that
 #'   come from its reactive dependencies; it only invalidates in response to the
-#'   given event. (This does the same thing as [eventReactive()], which was
-#'   available in Shiny prior to version 1.6.0.)
+#'   given event.
 #'
 #'   `bindEvent()` is often used with [bindCache()].
 #'

R/bookmark-state.R

@@ -1,3 +1,6 @@
+#' @include stack.R
+NULL
+
 ShinySaveState <- R6Class("ShinySaveState",
   public = list(
     input = NULL,
@@ -99,13 +102,13 @@ saveShinySaveState <- function(state) {
 
 # Encode the state to a URL. This does not save to disk.
 encodeShinySaveState <- function(state) {
+  exclude <- c(state$exclude, "._bookmark_")
+  inputVals <- serializeReactiveValues(state$input, exclude, stateDir = NULL)
+
   # Allow user-supplied onSave function to do things like add state$values.
   if (!is.null(state$onSave))
     isolate(state$onSave(state))
 
-  exclude <- c(state$exclude, "._bookmark_")
-  inputVals <- serializeReactiveValues(state$input, exclude, stateDir = NULL)
-
   inputVals <- vapply(inputVals,
     function(x) toJSON(x, strict_atomic = FALSE),
     character(1),
@@ -321,38 +324,34 @@ RestoreContext <- R6Class("RestoreContext",
       if (substr(queryString, 1, 1) == '?')
         queryString <- substr(queryString, 2, nchar(queryString))
 
-      # The "=" after "_inputs_" is optional. Shiny doesn't generate URLs with
-      # "=", but httr always adds "=".
-      inputs_reg <- "(^|&)_inputs_=?(&|$)"
-      values_reg <- "(^|&)_values_=?(&|$)"
 
       # Error if multiple '_inputs_' or '_values_'. This is needed because
       # strsplit won't add an entry if the search pattern is at the end of a
       # string.
-      if (length(gregexpr(inputs_reg, queryString)[[1]]) > 1)
+      if (length(gregexpr("(^|&)_inputs_(&|$)", queryString)[[1]]) > 1)
         stop("Invalid state string: more than one '_inputs_' found")
-      if (length(gregexpr(values_reg, queryString)[[1]]) > 1)
+      if (length(gregexpr("(^|&)_values_(&|$)", queryString)[[1]]) > 1)
         stop("Invalid state string: more than one '_values_' found")
 
       # Look for _inputs_ and store following content in inputStr
-      splitStr <- strsplit(queryString, inputs_reg)[[1]]
+      splitStr <- strsplit(queryString, "(^|&)_inputs_(&|$)")[[1]]
       if (length(splitStr) == 2) {
         inputStr <- splitStr[2]
         # Remove any _values_ (and content after _values_) that may come after
         # _inputs_
-        inputStr <- strsplit(inputStr, values_reg)[[1]][1]
+        inputStr <- strsplit(inputStr, "(^|&)_values_(&|$)")[[1]][1]
 
       } else {
         inputStr <- ""
       }
 
       # Look for _values_ and store following content in valueStr
-      splitStr <- strsplit(queryString, values_reg)[[1]]
+      splitStr <- strsplit(queryString, "(^|&)_values_(&|$)")[[1]]
       if (length(splitStr) == 2) {
         valueStr <- splitStr[2]
         # Remove any _inputs_ (and content after _inputs_) that may come after
         # _values_
-        valueStr <- strsplit(valueStr, inputs_reg)[[1]][1]
+        valueStr <- strsplit(valueStr, "(^|&)_inputs_(&|$)")[[1]][1]
 
       } else {
         valueStr <- ""
@@ -363,20 +362,16 @@ RestoreContext <- R6Class("RestoreContext",
       values <- parseQueryString(valueStr, nested = TRUE)
 
       valuesFromJSON <- function(vals) {
-        varsUnparsed <- c()
-        valsParsed <- mapply(names(vals), vals, SIMPLIFY = FALSE,
+        mapply(names(vals), vals, SIMPLIFY = FALSE,
           FUN = function(name, value) {
             tryCatch(
               safeFromJSON(value),
               error = function(e) {
-                varsUnparsed <<- c(varsUnparsed, name)
-                warning("Failed to parse URL parameter \"", name, "\"")
+                stop("Failed to parse URL parameter \"", name, "\"")
               }
             )
           }
         )
-        valsParsed[varsUnparsed] <- NULL
-        valsParsed
       }
 
       inputs <- valuesFromJSON(inputs)
@@ -452,10 +447,8 @@ RestoreInputSet <- R6Class("RestoreInputSet",
   )
 )
 
-restoreCtxStack <- NULL
-on_load({
-    restoreCtxStack <- fastmap::faststack()
-})
+
+restoreCtxStack <- Stack$new()
 
 withRestoreContext <- function(ctx, expr) {
   restoreCtxStack$push(ctx)
@@ -551,7 +544,7 @@ restoreInput <- function(id, default) {
 #' `window.history.pushState(null, null, queryString)`.
 #'
 #' @param queryString The new query string to show in the location bar.
-#' @param mode When the query string is updated, should the current history
+#' @param mode When the query string is updated, should the the current history
 #'   entry be replaced (default), or should a new history entry be pushed onto
 #'   the history stack? The former should only be used in a live bookmarking
 #'   context. The latter is useful if you want to navigate between states using
@@ -1167,10 +1160,10 @@ setBookmarkExclude <- function(names = character(0), session = getDefaultReactiv
 #'     toupper(input$text)
 #'   })
 #'   onBookmark(function(state) {
-#'     state$values$hash <- rlang::hash(input$text)
+#'     state$values$hash <- digest::digest(input$text, "md5")
 #'   })
 #'   onRestore(function(state) {
-#'     if (identical(rlang::hash(input$text), state$values$hash)) {
+#'     if (identical(digest::digest(input$text, "md5"), state$values$hash)) {
 #'       message("Module's input text matches hash ", state$values$hash)
 #'     } else {
 #'       message("Module's input text does not match hash ", state$values$hash)
@@ -1193,10 +1186,10 @@ setBookmarkExclude <- function(names = character(0), session = getDefaultReactiv
 #' server <- function(input, output, session) {
 #'   callModule(capitalizerServer, "tc")
 #'   onBookmark(function(state) {
-#'     state$values$hash <- rlang::hash(input$text)
+#'     state$values$hash <- digest::digest(input$text, "md5")
 #'   })
 #'   onRestore(function(state) {
-#'     if (identical(rlang::hash(input$text), state$values$hash)) {
+#'     if (identical(digest::digest(input$text, "md5"), state$values$hash)) {
 #'       message("App's input text matches hash ", state$values$hash)
 #'     } else {
 #'       message("App's input text does not match hash ", state$values$hash)

R/bootstrap-deprecated.R

@@ -6,7 +6,7 @@
 #' @param sidebarPanel The [sidebarPanel] containing input controls
 #' @param mainPanel The [mainPanel] containing outputs
 #' @keywords internal
-#' @return A UI definition that can be passed to the [shinyUI] function
+#' @return A UI defintion that can be passed to the [shinyUI] function
 #' @export
 pageWithSidebar <- function(headerPanel,
                             sidebarPanel,

R/bootstrap-layout.R

@@ -11,9 +11,14 @@
 #' @param ... Elements to include within the page
 #' @param title The browser window title (defaults to the host URL of the page).
 #'   Can also be set as a side effect of the [titlePanel()] function.
+#' @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). For example, to use the theme located at
+#'   `www/bootstrap.css` you would use `theme = "bootstrap.css"`.
 #' @inheritParams bootstrapPage
 #'
-#' @return A UI definition that can be passed to the [shinyUI] function.
+#' @return A UI defintion that can be passed to the [shinyUI] function.
 #'
 #' @details To create a fluid page use the `fluidPage` function and include
 #'   instances of `fluidRow` and [column()] within it. As an
@@ -21,7 +26,7 @@
 #'   higher-level layout functions like [sidebarLayout()].
 #'
 #' @note See the [
-#'   Shiny-Application-Layout-Guide](https://shiny.rstudio.com/articles/layout-guide.html) for additional details on laying out fluid
+#'   Shiny-Application-Layout-Guide](http://shiny.rstudio.com/articles/layout-guide.html) for additional details on laying out fluid
 #'   pages.
 #'
 #' @family layout functions
@@ -83,9 +88,10 @@
 #' }
 #' @rdname fluidPage
 #' @export
-fluidPage <- function(..., title = NULL, theme = NULL, lang = NULL) {
+fluidPage <- function(..., title = NULL, responsive = NULL, theme = NULL, lang = NULL) {
   bootstrapPage(div(class = "container-fluid", ...),
                 title = title,
+                responsive = responsive,
                 theme = theme,
                 lang = lang)
 }
@@ -109,9 +115,14 @@ fluidRow <- function(...) {
 #'
 #' @param ... Elements to include within the container
 #' @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). For example, to use the theme located at
+#'   `www/bootstrap.css` you would use `theme = "bootstrap.css"`.
 #' @inheritParams bootstrapPage
 #'
-#' @return A UI definition that can be passed to the [shinyUI] function.
+#' @return A UI defintion that can be passed to the [shinyUI] function.
 #'
 #' @details To create a fixed page use the `fixedPage` function and include
 #'   instances of `fixedRow` and [column()] within it. Note that
@@ -120,7 +131,7 @@ fluidRow <- function(...) {
 #'   with `fixedRow` and `column`.
 #'
 #' @note See the [
-#'   Shiny Application Layout Guide](https://shiny.rstudio.com/articles/layout-guide.html) for additional details on laying out fixed
+#'   Shiny Application Layout Guide](http://shiny.rstudio.com/articles/layout-guide.html) for additional details on laying out fixed
 #'   pages.
 #'
 #' @family layout functions
@@ -148,9 +159,10 @@ fluidRow <- function(...) {
 #'
 #' @rdname fixedPage
 #' @export
-fixedPage <- function(..., title = NULL, theme = NULL, lang = NULL) {
+fixedPage <- function(..., title = NULL, responsive = NULL, theme = NULL, lang = NULL) {
   bootstrapPage(div(class = "container", ...),
                 title = title,
+                responsive = responsive,
                 theme = theme,
                 lang = lang)
 }
@@ -390,7 +402,7 @@ mainPanel <- function(..., width = 8) {
 #' }
 #' @export
 verticalLayout <- function(..., fluid = TRUE) {
-  lapply(list2(...), function(row) {
+  lapply(list(...), function(row) {
     col <- column(12, row)
     if (fluid)
       fluidRow(col)
@@ -427,7 +439,7 @@ verticalLayout <- function(..., fluid = TRUE) {
 #' @export
 flowLayout <- function(..., cellArgs = list()) {
 
-  children <- list2(...)
+  children <- list(...)
   childIdx <- !nzchar(names(children) %||% character(length(children)))
   attribs <- children[!childIdx]
   children <- children[childIdx]
@@ -510,13 +522,13 @@ inputPanel <- function(...) {
 #' @export
 splitLayout <- function(..., cellWidths = NULL, cellArgs = list()) {
 
-  children <- list2(...)
+  children <- list(...)
   childIdx <- !nzchar(names(children) %||% character(length(children)))
   attribs <- children[!childIdx]
   children <- children[childIdx]
   count <- length(children)
 
-  if (length(cellWidths) == 0 || isTRUE(is.na(cellWidths))) {
+  if (length(cellWidths) == 0 || is.na(cellWidths)) {
     cellWidths <- sprintf("%.3f%%", 100 / count)
   }
   cellWidths <- rep(cellWidths, length.out = count)
@@ -608,7 +620,7 @@ fillCol <- function(..., flex = 1, width = "100%", height = "100%") {
 }
 
 flexfill <- function(..., direction, flex, width = width, height = height) {
-  children <- list2(...)
+  children <- list(...)
   attrs <- list()
 
   if (!is.null(names(children))) {
@@ -689,3 +701,37 @@ flexfill <- function(..., direction, flex, width = width, height = height) {
   )
   do.call(tags$div, c(attrs, divArgs))
 }
+
+css <- function(..., collapse_ = "") {
+  props <- list(...)
+  if (length(props) == 0) {
+    return("")
+  }
+
+  if (is.null(names(props)) || any(names(props) == "")) {
+    stop("cssList expects all arguments to be named")
+  }
+
+  # Necessary to make factors show up as level names, not numbers
+  props[] <- lapply(props, paste, collapse = " ")
+
+  # Drop null args
+  props <- props[!sapply(props, empty)]
+  if (length(props) == 0) {
+    return("")
+  }
+
+  # Replace all '.' and '_' in property names to '-'
+  names(props) <- gsub("[._]", "-", tolower(gsub("([A-Z])", "-\\1", names(props))))
+
+  # Create "!important" suffix for each property whose name ends with !, then
+  # remove the ! from the property name
+  important <- ifelse(grepl("!$", names(props), perl = TRUE), " !important", "")
+  names(props) <- sub("!$", "", names(props), perl = TRUE)
+
+  paste0(names(props), ":", props, important, ";", collapse = collapse_)
+}
+
+empty <- function(x) {
+  length(x) == 0 || (is.character(x) && !any(nzchar(x)))
+}

R/busy-indicators-spinners.R

@@ -1,4 +0,0 @@
-# Generated by tools/updateSpinnerTypes.R: do not edit by hand
-.busySpinnerTypes <-
-  c("ring", "ring2", "ring3", "bars", "bars2", "bars3", "pulse", 
-  "pulse2", "pulse3", "dots", "dots2", "dots3")

R/busy-indicators.R

@@ -1,294 +0,0 @@
-#' Enable/disable busy indication
-#'
-#' Busy indicators provide a visual cue to users when the server is busy
-#' calculating outputs or otherwise performing tasks (e.g., producing
-#' downloads). When enabled, a spinner is shown on each
-#' calculating/recalculating output, and a pulsing banner is shown at the top of
-#' the page when the app is otherwise busy. Busy indication is enabled by
-#' default for UI created with \pkg{bslib}, but must be enabled otherwise. To
-#' enable/disable, include the result of this function in anywhere in the app's
-#' UI.
-#'
-#' When both `spinners` and `pulse` are set to `TRUE`, the pulse is
-#' automatically disabled when spinner(s) are active. When both `spinners` and
-#' `pulse` are set to `FALSE`, no busy indication is shown (other than the
-#' graying out of recalculating outputs).
-#'
-#' @param ... Currently ignored.
-#' @param spinners Whether to show a spinner on each calculating/recalculating
-#'   output.
-#' @param pulse Whether to show a pulsing banner at the top of the page when the
-#'   app is busy.
-#' @param fade Whether to fade recalculating outputs. A value of `FALSE` is
-#'   equivalent to `busyIndicatorOptions(fade_opacity=1)`.
-#'
-#' @export
-#' @seealso [busyIndicatorOptions()] for customizing the appearance of the busy
-#'   indicators.
-#' @examplesIf rlang::is_interactive()
-#'
-#' library(bslib)
-#'
-#' ui <- page_fillable(
-#'   useBusyIndicators(),
-#'   card(
-#'     card_header(
-#'       "A plot",
-#'       input_task_button("simulate", "Simulate"),
-#'       class = "d-flex justify-content-between align-items-center"
-#'     ),
-#'     plotOutput("p"),
-#'   )
-#' )
-#'
-#' server <- function(input, output) {
-#'   output$p <- renderPlot({
-#'     input$simulate
-#'     Sys.sleep(4)
-#'     plot(x = rnorm(100), y = rnorm(100))
-#'   })
-#' }
-#'
-#' shinyApp(ui, server)
-useBusyIndicators <- function(..., spinners = TRUE, pulse = TRUE, fade = TRUE) {
-
-  rlang::check_dots_empty()
-
-  attrs <- list("shinyBusySpinners" = spinners, "shinyBusyPulse" = pulse)
-
-  js <- vapply(names(attrs), character(1), FUN = function(key) {
-    if (attrs[[key]]) {
-      sprintf("document.documentElement.dataset.%s = 'true';", key)
-    } else {
-      sprintf("delete document.documentElement.dataset.%s;", key)
-    }
-  })
-
-  # TODO: it'd be nice if htmltools had something like a page_attrs() that allowed us
-  # to do this without needing to inject JS into the head.
-  res <- tags$script(HTML(paste(js, collapse = "\n")))
-
-  if (!fade) {
-    res <- tagList(res, fadeOptions(opacity = 1))
-  }
-
-  res
-}
-
-#' Customize busy indicator options
-#'
-#' @description
-#' Shiny automatically includes busy indicators, which more specifically means:
-#'   1. Calculating/recalculating outputs have a spinner overlay.
-#'   2. Outputs fade out/in when recalculating.
-#'   3. When no outputs are calculating/recalculating, but Shiny is busy
-#'     doing something else (e.g., a download, side-effect, etc), a page-level
-#'     pulsing banner is shown.
-#'
-#' This function allows you to customize the appearance of these busy indicators
-#' by including the result of this function inside the app's UI. Note that,
-#' unless `spinner_selector` (or `fade_selector`) is specified, the spinner/fade
-#' customization applies to the parent element. If the customization should
-#' instead apply to the entire page, set `spinner_selector = 'html'` and
-#' `fade_selector = 'html'`.
-#'
-#' @param ... Currently ignored.
-#' @param spinner_type The type of spinner. Pre-bundled types include:
-#'   '`r paste0(.busySpinnerTypes, collapse = "', '")`'.
-#'
-#'   A path to a local SVG file can also be provided. The SVG should adhere to
-#'   the following rules:
-#'   * The SVG itself should contain the animation.
-#'   * It should avoid absolute sizes (the spinner's containing DOM element
-#'     size is set in CSS by `spinner_size`, so it should fill that container).
-#'   * It should avoid setting absolute colors (the spinner's containing DOM element
-#'     color is set in CSS by `spinner_color`, so it should inherit that color).
-#' @param spinner_color The color of the spinner. This can be any valid CSS
-#'   color. Defaults to the app's "primary" color if Bootstrap is on the page.
-#' @param spinner_size The size of the spinner. This can be any valid CSS size.
-#' @param spinner_delay The amount of time to wait before showing the spinner.
-#'   This can be any valid CSS time and can be useful for not showing the spinner
-#'   if the computation finishes quickly.
-#' @param spinner_selector A character string containing a CSS selector for
-#'   scoping the spinner customization. The default (`NULL`) will apply the
-#'   spinner customization to the parent element of the spinner.
-#' @param fade_opacity The opacity (a number between 0 and 1) for recalculating
-#'   output. Set to 1 to "disable" the fade.
-#' @param fade_selector A character string containing a CSS selector for
-#'   scoping the spinner customization. The default (`NULL`) will apply the
-#'   spinner customization to the parent element of the spinner.
-#' @param pulse_background A CSS background definition for the pulse. The
-#'   default uses a
-#'   [linear-gradient](https://developer.mozilla.org/en-US/docs/Web/CSS/gradient/linear-gradient)
-#'   of the theme's indigo, purple, and pink colors.
-#' @param pulse_height The height of the pulsing banner. This can be any valid
-#'   CSS size.
-#' @param pulse_speed The speed of the pulsing banner. This can be any valid CSS
-#'   time.
-#'
-#' @export
-#' @seealso [useBusyIndicators()] to disable/enable busy indicators.
-#' @examplesIf rlang::is_interactive()
-#'
-#' library(bslib)
-#'
-#' card_ui <- function(id, spinner_type = id) {
-#'   card(
-#'     busyIndicatorOptions(spinner_type = spinner_type),
-#'     card_header(paste("Spinner:", spinner_type)),
-#'     plotOutput(shiny::NS(id, "plot"))
-#'   )
-#' }
-#'
-#' card_server <- function(id, simulate = reactive()) {
-#'   moduleServer(
-#'     id = id,
-#'     function(input, output, session) {
-#'       output$plot <- renderPlot({
-#'         Sys.sleep(1)
-#'         simulate()
-#'         plot(x = rnorm(100), y = rnorm(100))
-#'       })
-#'     }
-#'   )
-#' }
-#'
-#' ui <- page_fillable(
-#'   useBusyIndicators(),
-#'   input_task_button("simulate", "Simulate", icon = icon("refresh")),
-#'   layout_columns(
-#'     card_ui("ring"),
-#'     card_ui("bars"),
-#'     card_ui("dots"),
-#'     card_ui("pulse"),
-#'     col_widths = 6
-#'   )
-#' )
-#'
-#' server <- function(input, output, session) {
-#'   simulate <- reactive(input$simulate)
-#'   card_server("ring", simulate)
-#'   card_server("bars", simulate)
-#'   card_server("dots", simulate)
-#'   card_server("pulse", simulate)
-#' }
-#'
-#' shinyApp(ui, server)
-#'
-busyIndicatorOptions <- function(
-  ...,
-  spinner_type = NULL,
-  spinner_color = NULL,
-  spinner_size = NULL,
-  spinner_delay = NULL,
-  spinner_selector = NULL,
-  fade_opacity = NULL,
-  fade_selector = NULL,
-  pulse_background = NULL,
-  pulse_height = NULL,
-  pulse_speed = NULL
-) {
-
-  rlang::check_dots_empty()
-
-  res <- tagList(
-    spinnerOptions(
-      type = spinner_type,
-      color = spinner_color,
-      size = spinner_size,
-      delay = spinner_delay,
-      selector = spinner_selector
-    ),
-    fadeOptions(opacity = fade_opacity, selector = fade_selector),
-    pulseOptions(
-      background = pulse_background,
-      height = pulse_height,
-      speed = pulse_speed
-    )
-  )
-
-  bslib::as.card_item(dropNulls(res))
-}
-
-
-spinnerOptions <- function(type = NULL, color = NULL, size = NULL, delay = NULL, selector = NULL) {
-  if (is.null(type) && is.null(color) && is.null(size) && is.null(delay) && is.null(selector)) {
-    return(NULL)
-  }
-
-  url <- NULL
-  if (!is.null(type)) {
-    stopifnot(is.character(type) && length(type) == 1)
-    if (file.exists(type) && grepl("\\.svg$", type)) {
-      typeRaw <- readBin(type, "raw", n = file.info(type)$size)
-      url <- sprintf("url('data:image/svg+xml;base64,%s')", rawToBase64(typeRaw))
-    } else {
-      type <- rlang::arg_match(type, .busySpinnerTypes)
-      url <- sprintf("url('spinners/%s.svg')", type)
-    }
-  }
-
-  # Options controlled via CSS variables.
-  css_vars <- htmltools::css(
-    "--shiny-spinner-url" = url,
-    "--shiny-spinner-color" = htmltools::parseCssColors(color),
-    "--shiny-spinner-size" = htmltools::validateCssUnit(size),
-    "--shiny-spinner-delay" = delay
-  )
-
-  id <- NULL
-  if (is.null(selector)) {
-    id <- paste0("spinner-options-", p_randomInt(100, 1000000))
-    selector <- sprintf(":has(> #%s)", id)
-  }
-
-  css <- HTML(paste0(selector, " {", css_vars, "}"))
-
-  tags$style(css, id = id)
-}
-
-fadeOptions <- function(opacity = NULL, selector = NULL) {
-  if (is.null(opacity) && is.null(selector)) {
-    return(NULL)
-  }
-
-  css_vars <- htmltools::css(
-    "--shiny-fade-opacity" = opacity
-  )
-
-  id <- NULL
-  if (is.null(selector)) {
-    id <- paste0("fade-options-", p_randomInt(100, 1000000))
-    selector <- sprintf(":has(> #%s)", id)
-  }
-
-  css <- HTML(paste0(selector, " {", css_vars, "}"))
-
-  tags$style(css, id = id)
-}
-
-pulseOptions <- function(background = NULL, height = NULL, speed = NULL) {
-  if (is.null(background) && is.null(height) && is.null(speed))  {
-    return(NULL)
-  }
-
-  css_vars <- htmltools::css(
-    "--shiny-pulse-background" = background,
-    "--shiny-pulse-height" = htmltools::validateCssUnit(height),
-    "--shiny-pulse-speed" = speed
-  )
-
-  tags$style(HTML(paste0(":root {", css_vars, "}")))
-}
-
-busyIndicatorDependency <- function() {
-  htmlDependency(
-    name = "shiny-busy-indicators",
-    version = get_package_version("shiny"),
-    src = "www/shared/busy-indicators",
-    package = "shiny",
-    stylesheet = "busy-indicators.css",
-    # TODO-future: In next release make spinners and pulse opt-out
-    # head = as.character(useBusyIndicators())
-  )
-}

R/conditions.R

@@ -75,18 +75,6 @@ getCallNames <- function(calls) {
   })
 }
 
-# A stripped down version of getCallNames() that intentionally avoids deparsing expressions.
-# Instead, it leaves expressions to be directly `rlang::hash()` (for de-duplication), which
-# is much faster than deparsing then hashing.
-getCallNamesForHash <- function(calls) {
-  lapply(calls, function(call) {
-    name <- call[[1L]]
-    if (is.function(name)) return("<Anonymous>")
-    if (typeof(name) == "promise") return("<Promise>")
-    name
-  })
-}
-
 getLocs <- function(calls) {
   vapply(calls, function(call) {
     srcref <- attr(call, "srcref", exact = TRUE)
@@ -142,48 +130,10 @@ captureStackTraces <- function(expr) {
 #' @include globals.R
 .globals$deepStack <- NULL
 
-getCallStackDigest <- function(callStack, warn = FALSE) {
-  dg <- attr(callStack, "shiny.stack.digest", exact = TRUE)
-  if (!is.null(dg)) {
-    return(dg)
-  }
-
-  if (isTRUE(warn)) {
-    rlang::warn(
-      "Call stack doesn't have a cached digest; expensively computing one now",
-      .frequency = "once",
-      .frequency_id = "deepstack-uncached-digest-warning"
-    )
-  }
-
-  rlang::hash(getCallNamesForHash(callStack))
-}
-
-saveCallStackDigest <- function(callStack) {
-  attr(callStack, "shiny.stack.digest") <- getCallStackDigest(callStack, warn = FALSE)
-  callStack
-}
-
-# Appends a call stack to a list of call stacks, but only if it's not already
-# in the list. The list is deduplicated by digest; ideally the digests on the
-# list are cached before calling this function (you will get a warning if not).
-appendCallStackWithDedupe <- function(lst, x) {
-  digests <- vapply(lst, getCallStackDigest, character(1), warn = TRUE)
-  xdigest <- getCallStackDigest(x, warn = TRUE)
-  stopifnot(all(nzchar(digests)))
-  stopifnot(length(xdigest) == 1)
-  stopifnot(nzchar(xdigest))
-  if (xdigest %in% digests) {
-    return(lst)
-  } else {
-    return(c(lst, list(x)))
-  }
-}
-
 createStackTracePromiseDomain <- function() {
   # These are actually stateless, we wouldn't have to create a new one each time
   # if we didn't want to. They're pretty cheap though.
-
+  
   d <- promises::new_promise_domain(
     wrapOnFulfilled = function(onFulfilled) {
       force(onFulfilled)
@@ -192,14 +142,13 @@ createStackTracePromiseDomain <- function() {
         currentStack <- sys.calls()
         currentParents <- sys.parents()
         attr(currentStack, "parents") <- currentParents
-        currentStack <- saveCallStackDigest(currentStack)
         currentDeepStack <- .globals$deepStack
       }
       function(...) {
         # Fulfill time
         if (deepStacksEnabled()) {
           origDeepStack <- .globals$deepStack
-          .globals$deepStack <- appendCallStackWithDedupe(currentDeepStack, currentStack)
+          .globals$deepStack <- c(currentDeepStack, list(currentStack))
           on.exit(.globals$deepStack <- origDeepStack, add = TRUE)
         }
 
@@ -216,14 +165,13 @@ createStackTracePromiseDomain <- function() {
         currentStack <- sys.calls()
         currentParents <- sys.parents()
         attr(currentStack, "parents") <- currentParents
-        currentStack <- saveCallStackDigest(currentStack)
         currentDeepStack <- .globals$deepStack
       }
       function(...) {
         # Fulfill time
         if (deepStacksEnabled()) {
           origDeepStack <- .globals$deepStack
-          .globals$deepStack <- appendCallStackWithDedupe(currentDeepStack, currentStack)
+          .globals$deepStack <- c(currentDeepStack, list(currentStack))
           on.exit(.globals$deepStack <- origDeepStack, add = TRUE)
         }
 
@@ -251,7 +199,6 @@ doCaptureStack <- function(e) {
     calls <- sys.calls()
     parents <- sys.parents()
     attr(calls, "parents") <- parents
-    calls <- saveCallStackDigest(calls)
     attr(e, "stack.trace") <- calls
   }
   if (deepStacksEnabled()) {
@@ -270,7 +217,7 @@ doCaptureStack <- function(e) {
 #' @rdname stacktrace
 #' @export
 withLogErrors <- function(expr,
-  full = get_devmode_option("shiny.fullstacktrace", FALSE),
+  full = getOption("shiny.fullstacktrace", FALSE),
   offset = getOption("shiny.stacktraceoffset", TRUE)) {
 
   withCallingHandlers(
@@ -281,9 +228,7 @@ withLogErrors <- function(expr,
       if (promises::is.promise(result)) {
         result <- promises::catch(result, function(cond) {
           # Don't print shiny.silent.error (i.e. validation errors)
-          if (cnd_inherits(cond, "shiny.silent.error")) {
-            return()
-          }
+          if (inherits(cond, "shiny.silent.error")) return()
           if (isTRUE(getOption("show.error.messages"))) {
             printError(cond, full = full, offset = offset)
           }
@@ -294,7 +239,7 @@ withLogErrors <- function(expr,
     },
     error = function(cond) {
       # Don't print shiny.silent.error (i.e. validation errors)
-      if (cnd_inherits(cond, "shiny.silent.error")) return()
+      if (inherits(cond, "shiny.silent.error")) return()
       if (isTRUE(getOption("show.error.messages"))) {
         printError(cond, full = full, offset = offset)
       }
@@ -319,128 +264,176 @@ withLogErrors <- function(expr,
 #' @rdname stacktrace
 #' @export
 printError <- function(cond,
-  full = get_devmode_option("shiny.fullstacktrace", FALSE),
+  full = getOption("shiny.fullstacktrace", FALSE),
   offset = getOption("shiny.stacktraceoffset", TRUE)) {
-
-  warning(call. = FALSE, immediate. = TRUE, sprintf("Error in %s: %s",
+  
+  warning(call. = FALSE, immediate. = TRUE, sprintf("Error in %s: %s", 
     getCallNames(list(conditionCall(cond))), conditionMessage(cond)))
-
+  
   printStackTrace(cond, full = full, offset = offset)
 }
 
 #' @rdname stacktrace
 #' @export
 printStackTrace <- function(cond,
-  full = get_devmode_option("shiny.fullstacktrace", FALSE),
+  full = getOption("shiny.fullstacktrace", FALSE),
   offset = getOption("shiny.stacktraceoffset", TRUE)) {
 
-  stackTraces <- c(
-    attr(cond, "deep.stack.trace", exact = TRUE),
-    list(attr(cond, "stack.trace", exact = TRUE))
-  )
-
-  # Stripping of stack traces is the one step where the different stack traces
-  # interact. So we need to do this in one go, instead of individually within
-  # printOneStackTrace.
-  if (!full) {
-    stripResults <- stripStackTraces(lapply(stackTraces, getCallNames))
-  } else {
-    # If full is TRUE, we don't want to strip anything
-    stripResults <- rep_len(list(TRUE), length(stackTraces))
-  }
-
-  mapply(
-    seq_along(stackTraces),
-    rev(stackTraces),
-    rev(stripResults),
-    FUN = function(i, trace, stripResult) {
-      if (is.integer(trace)) {
-        noun <- if (trace > 1L) "traces" else "trace"
-        message("[ reached getOption(\"shiny.deepstacktrace\") -- omitted ", trace, " more stack ", noun, " ]")
-      } else {
-        if (i != 1) {
-          message("From earlier call:")
-        }
-        printOneStackTrace(
-          stackTrace = trace,
-          stripResult = stripResult,
-          full = full,
-          offset = offset
-        )
-      }
-      # No mapply return value--we're just printing
-      NULL
-    },
-    SIMPLIFY = FALSE
-  )
-
-  invisible()
-}
-
-printOneStackTrace <- function(stackTrace, stripResult, full, offset) {
-  calls <- offsetSrcrefs(stackTrace, offset = offset)
-  callNames <- getCallNames(stackTrace)
-  parents <- attr(stackTrace, "parents", exact = TRUE)
-
   should_drop <- !full
   should_strip <- !full
   should_prune <- !full
-
+  
+  stackTraceCalls <- c(
+    attr(cond, "deep.stack.trace", exact = TRUE),
+    list(attr(cond, "stack.trace", exact = TRUE))
+  )
+  
+  stackTraceParents <- lapply(stackTraceCalls, attr, which = "parents", exact = TRUE)
+  stackTraceCallNames <- lapply(stackTraceCalls, getCallNames)
+  stackTraceCalls <- lapply(stackTraceCalls, offsetSrcrefs, offset = offset)
+  
+  # Use dropTrivialFrames logic to remove trailing bits (.handleSimpleError, h)
   if (should_drop) {
-    toKeep <- dropTrivialFrames(callNames)
-    calls <- calls[toKeep]
-    callNames <- callNames[toKeep]
-    parents <- parents[toKeep]
-    stripResult <- stripResult[toKeep]
+    # toKeep is a list of logical vectors, of which elements (stack frames) to keep
+    toKeep <- lapply(stackTraceCallNames, dropTrivialFrames)
+    # We apply the list of logical vector indices to each data structure
+    stackTraceCalls <- mapply(stackTraceCalls, FUN = `[`, toKeep, SIMPLIFY = FALSE)
+    stackTraceCallNames <- mapply(stackTraceCallNames, FUN = `[`, toKeep, SIMPLIFY = FALSE)
+    stackTraceParents <- mapply(stackTraceParents, FUN = `[`, toKeep, SIMPLIFY = FALSE)
   }
+  
+  delayedAssign("all_true", {
+    # List of logical vectors that are all TRUE, the same shape as
+    # stackTraceCallNames. Delay the evaluation so we don't create it unless
+    # we need it, but if we need it twice then we don't pay to create it twice.
+    lapply(stackTraceCallNames, function(st) {
+      rep_len(TRUE, length(st))
+    })
+  })
+  
+  # stripStackTraces and lapply(stackTraceParents, pruneStackTrace) return lists
+  # of logical vectors. Use mapply(FUN = `&`) to boolean-and each pair of the
+  # logical vectors.
+  toShow <- mapply(
+    if (should_strip) stripStackTraces(stackTraceCallNames) else all_true,
+    if (should_prune) lapply(stackTraceParents, pruneStackTrace) else all_true,
+    FUN = `&`,
+    SIMPLIFY = FALSE
+  )
+  
+  dfs <- mapply(seq_along(stackTraceCalls), rev(stackTraceCalls), rev(stackTraceCallNames), rev(toShow), FUN = function(i, calls, nms, index) {
+    st <- data.frame(
+      num = rev(which(index)),
+      call = rev(nms[index]),
+      loc = rev(getLocs(calls[index])),
+      category = rev(getCallCategories(calls[index])),
+      stringsAsFactors = FALSE
+    )
+    
+    if (i != 1) {
+      message("From earlier call:")
+    }
 
-  toShow <- rep(TRUE, length(callNames))
-  if (should_prune) {
-    toShow <- toShow & pruneStackTrace(parents)
+    if (nrow(st) == 0) {
+      message("  [No stack trace available]")
+    } else {
+      width <- floor(log10(max(st$num))) + 1
+      formatted <- paste0(
+        "  ",
+        formatC(st$num, width = width),
+        ": ",
+        mapply(paste0(st$call, st$loc), st$category, FUN = function(name, category) {
+          if (category == "pkg")
+            crayon::silver(name)
+          else if (category == "user")
+            crayon::blue$bold(name)
+          else
+            crayon::white(name)
+        }),
+        "\n"
+      )
+      cat(file = stderr(), formatted, sep = "")
+    }
+
+    st
+  }, SIMPLIFY = FALSE)
+  
+  invisible()
+}
+
+#' @details `extractStackTrace` takes a list of calls (e.g. as returned
+#'   from `conditionStackTrace(cond)`) and returns a data frame with one
+#'   row for each stack frame and the columns `num` (stack frame number),
+#'   `call` (a function name or similar), and `loc` (source file path
+#'   and line number, if available). It was deprecated after shiny 1.0.5 because
+#'   it doesn't support deep stack traces.
+#' @rdname stacktrace
+#' @export
+extractStackTrace <- function(calls,
+  full = getOption("shiny.fullstacktrace", FALSE),
+  offset = getOption("shiny.stacktraceoffset", TRUE)) {
+  
+  shinyDeprecated(NULL,
+    "extractStackTrace is deprecated. Please contact the Shiny team if you were using this functionality.",
+    version = "1.0.5")
+
+  srcrefs <- getSrcRefs(calls)
+  if (offset) {
+    # Offset calls vs. srcrefs by 1 to make them more intuitive.
+    # E.g. for "foo [bar.R:10]", line 10 of bar.R will be part of
+    # the definition of foo().
+    srcrefs <- c(utils::tail(srcrefs, -1), list(NULL))
   }
-  if (should_strip) {
-    toShow <- toShow & stripResult
+  calls <- setSrcRefs(calls, srcrefs)
+
+  callnames <- getCallNames(calls)
+
+  # Hide and show parts of the callstack based on ..stacktrace(on|off)..
+  if (full) {
+    toShow <- rep.int(TRUE, length(calls))
+  } else {
+    # Remove stop(), .handleSimpleError(), and h() calls from the end of
+    # the calls--they don't add any helpful information. But only remove
+    # the last *contiguous* block of them, and then, only if they are the
+    # last thing in the calls list.
+    hideable <- callnames %in% c("stop", ".handleSimpleError", "h")
+    # What's the last that *didn't* match stop/.handleSimpleError/h?
+    lastGoodCall <- max(which(!hideable))
+    toRemove <- length(calls) - lastGoodCall
+    # But don't remove more than 5 levels--that's an indication we might
+    # have gotten it wrong, I guess
+    if (toRemove > 0 && toRemove < 5) {
+      calls <- utils::head(calls, -toRemove)
+      callnames <- utils::head(callnames, -toRemove)
+    }
+
+    # This uses a ref-counting scheme. It might make sense to switch this
+    # to a toggling scheme, so the most recent ..stacktrace(on|off)..
+    # directive wins, regardless of what came before it.
+    # Also explicitly remove ..stacktraceon.. because it can appear with
+    # score > 0 but still should never be shown.
+    score <- rep.int(0, length(callnames))
+    score[callnames == "..stacktraceoff.."] <- -1
+    score[callnames == "..stacktraceon.."] <- 1
+    toShow <- (1 + cumsum(score)) > 0 & !(callnames %in% c("..stacktraceon..", "..stacktraceoff..", "..stacktracefloor.."))
+
+    # doTryCatch, tryCatchOne, and tryCatchList are not informative--they're
+    # just internals for tryCatch
+    toShow <- toShow & !(callnames %in% c("doTryCatch", "tryCatchOne", "tryCatchList"))
   }
+  calls <- calls[toShow]
 
-  # If we're running in testthat, hide the parts of the stack trace that can
-  # vary based on how testthat was launched. It's critical that this is not
-  # happen at the same time as dropTrivialFrames, which happens before
-  # pruneStackTrace; because dropTrivialTestFrames removes calls from the top
-  # (or bottom? whichever is the oldest?) of the stack, it breaks `parents`
-  # which is based on absolute indices of calls. dropTrivialFrames gets away
-  # with this because it only removes calls from the opposite side of the stack.
-  toShow <- toShow & dropTrivialTestFrames(callNames)
+  calls <- rev(calls) # Show in traceback() order
+  index <- rev(which(toShow))
+  width <- floor(log10(max(index))) + 1
 
-  st <- data.frame(
-    num = rev(which(toShow)),
-    call = rev(callNames[toShow]),
-    loc = rev(getLocs(calls[toShow])),
-    category = rev(getCallCategories(calls[toShow])),
+  data.frame(
+    num = index,
+    call = getCallNames(calls),
+    loc = getLocs(calls),
+    category = getCallCategories(calls),
     stringsAsFactors = FALSE
   )
-
-  if (nrow(st) == 0) {
-    message("  [No stack trace available]")
-  } else {
-    width <- floor(log10(max(st$num))) + 1
-    formatted <- paste0(
-      "  ",
-      formatC(st$num, width = width),
-      ": ",
-      mapply(paste0(st$call, st$loc), st$category, FUN = function(name, category) {
-        if (category == "pkg")
-          cli::col_silver(name)
-        else if (category == "user")
-          cli::style_bold(cli::col_blue(name))
-        else
-          cli::col_white(name)
-      }),
-      "\n"
-    )
-    cat(file = stderr(), formatted, sep = "")
-  }
-
-  invisible(st)
 }
 
 stripStackTraces <- function(stackTraces, values = FALSE) {
@@ -466,19 +459,19 @@ stripOneStackTrace <- function(stackTrace, truncateFloor, startingScore) {
       prefix <- rep_len(FALSE, indexOfFloor)
     }
   }
-
+  
   if (length(stackTrace) == 0) {
     return(list(score = startingScore, character(0)))
   }
-
+  
   score <- rep.int(0L, length(stackTrace))
   score[stackTrace == "..stacktraceon.."] <- 1L
   score[stackTrace == "..stacktraceoff.."] <- -1L
   score <- startingScore + cumsum(score)
-
+  
   toShow <- score > 0 & !(stackTrace %in% c("..stacktraceon..", "..stacktraceoff..", "..stacktracefloor.."))
-
-
+  
+  
   list(score = utils::tail(score, 1), trace = c(prefix, toShow))
 }
 
@@ -493,32 +486,23 @@ pruneStackTrace <- function(parents) {
   # sufficient; we also need to drop nodes that are the last child, but one of
   # their ancestors is not.
   is_dupe <- duplicated(parents, fromLast = TRUE)
-
+  
   # The index of the most recently seen node that was actually kept instead of
   # dropped.
   current_node <- 0
-
+  
   # Loop over the parent indices. Anything that is not parented by current_node
   # (a.k.a. last-known-good node), or is a dupe, can be discarded. Anything that
   # is kept becomes the new current_node.
-  #
-  # jcheng 2022-03-18: Two more reasons a node can be kept:
-  #   1. parent is 0
-  #   2. parent is i
-  # Not sure why either of these situations happen, but they're common when
-  # interacting with rlang/dplyr errors. See issue rstudio/shiny#3250 for repro
-  # cases.
   include <- vapply(seq_along(parents), function(i) {
-    if ((!is_dupe[[i]] && parents[[i]] == current_node) ||
-        parents[[i]] == 0 ||
-        parents[[i]] == i) {
+    if (!is_dupe[[i]] && parents[[i]] == current_node) {
       current_node <<- i
       TRUE
     } else {
       FALSE
     }
   }, FUN.VALUE = logical(1))
-
+  
   include
 }
 
@@ -531,40 +515,13 @@ dropTrivialFrames <- function(callnames) {
   # What's the last that *didn't* match stop/.handleSimpleError/h?
   lastGoodCall <- max(which(!hideable))
   toRemove <- length(callnames) - lastGoodCall
-
+  
   c(
     rep_len(TRUE, length(callnames) - toRemove),
     rep_len(FALSE, toRemove)
   )
 }
 
-dropTrivialTestFrames <- function(callnames) {
-  if (!identical(Sys.getenv("TESTTHAT_IS_SNAPSHOT"), "true")) {
-    return(rep_len(TRUE, length(callnames)))
-  }
-
-  hideable <- callnames %in% c(
-    "test",
-    "devtools::test",
-    "test_check",
-    "testthat::test_check",
-    "test_dir",
-    "testthat::test_dir",
-    "test_file",
-    "testthat::test_file",
-    "test_local",
-    "testthat::test_local"
-  )
-
-  firstGoodCall <- min(which(!hideable))
-  toRemove <- firstGoodCall - 1L
-
-  c(
-    rep_len(FALSE, toRemove),
-    rep_len(TRUE, length(callnames) - toRemove)
-  )
-}
-
 offsetSrcrefs <- function(calls, offset = TRUE) {
   if (offset) {
     srcrefs <- getSrcRefs(calls)
@@ -573,12 +530,48 @@ offsetSrcrefs <- function(calls, offset = TRUE) {
     # E.g. for "foo [bar.R:10]", line 10 of bar.R will be part of
     # the definition of foo().
     srcrefs <- c(utils::tail(srcrefs, -1), list(NULL))
+    
     calls <- setSrcRefs(calls, srcrefs)
   }
-
+  
   calls
 }
 
+#' @details `formatStackTrace` is similar to `extractStackTrace`, but
+#'   it returns a preformatted character vector instead of a data frame. It was
+#'   deprecated after shiny 1.0.5 because it doesn't support deep stack traces.
+#' @param indent A string to prefix every line of the stack trace.
+#' @rdname stacktrace
+#' @export
+formatStackTrace <- function(calls, indent = "    ",
+  full = getOption("shiny.fullstacktrace", FALSE),
+  offset = getOption("shiny.stacktraceoffset", TRUE)) {
+
+  shinyDeprecated(NULL,
+    "extractStackTrace is deprecated. Please contact the Shiny team if you were using this functionality.",
+    version = "1.0.5")
+  
+  st <- extractStackTrace(calls, full = full, offset = offset)
+  if (nrow(st) == 0) {
+    return(character(0))
+  }
+
+  width <- floor(log10(max(st$num))) + 1
+  paste0(
+    indent,
+    formatC(st$num, width = width),
+    ": ",
+    mapply(paste0(st$call, st$loc), st$category, FUN = function(name, category) {
+      if (category == "pkg")
+        crayon::silver(name)
+      else if (category == "user")
+        crayon::blue$bold(name)
+      else
+        crayon::white(name)
+    })
+  )
+}
+
 getSrcRefs <- function(calls) {
   lapply(calls, function(call) {
     attr(call, "srcref", exact = TRUE)

R/deprecated.R

@@ -1,57 +1,44 @@
-
 #' Print message for deprecated functions in Shiny
 #'
 #' To disable these messages, use `options(shiny.deprecation.messages=FALSE)`.
 #'
-#' @param version Shiny version when the function was deprecated
-#' @param what Function with possible arguments
-#' @param with Possible function with arguments that should be used instead
-#' @param details Additional information to be added after a new line to the displayed message
+#' @param new Name of replacement function.
+#' @param msg Message to print. If used, this will override the default message.
+#' @param old Name of deprecated function.
+#' @param version The last version of Shiny before the item was deprecated.
 #' @keywords internal
-shinyDeprecated <- function(
-  version,
-  what,
-  with = NULL,
-  details = NULL,
-  type = c("deprecated", "superseded")
-) {
-  if (is_false(getOption("shiny.deprecation.messages"))) {
+shinyDeprecated <- function(new=NULL, msg=NULL,
+                            old=as.character(sys.call(sys.parent()))[1L],
+                            version = NULL) {
+
+  if (getOption("shiny.deprecation.messages") %||% TRUE == FALSE)
     return(invisible())
+
+  if (is.null(msg)) {
+    msg <- paste(old, "is deprecated.")
+    if (!is.null(new)) {
+      msg <- paste(msg, "Please use", new, "instead.",
+        "To disable this message, run options(shiny.deprecation.messages=FALSE)")
+    }
   }
 
-  type <- match.arg(type)
-
-  msg <- paste0("`", what, "` is ", type, " as of shiny ", version, ".")
-  if (!is.null(with)) {
-    msg <- paste0(msg, "\n", "Please use `", with, "` instead.")
-  }
-  if (!is.null(details)) {
-    msg <- paste0(msg, "\n", details)
+  if (!is.null(version)) {
+    msg <- paste0(msg, " (Last used in version ", version, ")")
   }
 
-  # lifecycle::deprecate_soft(when, what, with = with, details = details, id = id, env = env)
-  rlang::inform(message = msg, .frequency = "always", .frequency_id = msg, .file = stderr())
+  # Similar to .Deprecated(), but print a message instead of warning
+  message(msg)
 }
 
 
-deprecatedEnvQuotedMessage <- function() {
-  if (!in_devmode()) return(invisible())
-  if (is_false(getOption("shiny.deprecation.messages"))) return(invisible())
-
-  # Capture calling function
-  grandparent_call <- sys.call(-2)
-  # Turn language into user friendly string
-  grandparent_txt <- paste0(utils::capture.output({grandparent_call}), collapse = "\n")
-
-  msg <- paste0(
-    "The `env` and `quoted` arguments are deprecated as of shiny 1.7.0.",
-    " Please use quosures from `rlang` instead.\n",
-    "See <https://github.com/rstudio/shiny/issues/3108> for more information.\n",
-    "Function call:\n",
-    grandparent_txt
-  )
-  # Call less often as users do not have much control over this warning
-  rlang::inform(message = msg, .frequency = "regularly", .frequency_id = msg, .file = stderr())
+deprecatedEnvQuotedMessage <- function(env_arg = "env", quoted_arg = "quoted") {
+  # Enable this message in a future version of Shiny, perhaps in a dev_edition()
+  # mode.
+  # shinyDeprecated(msg = paste(
+  #   sprintf("The `%s` and `%s` arguments are deprecated.", env_arg, quoted_arg),
+  #   "Please use quosures from rlang instead.",
+  #   "See https://github.com/rstudio/shiny/issues/3108 for more information."
+  # ))
 }
 
 
@@ -69,13 +56,10 @@ diskCache <- function(
   evict = c("lru", "fifo"),
   destroy_on_finalize = FALSE,
   missing = key_missing(),
-  exec_missing = deprecated(),
-  logfile = NULL
-) {
-  shinyDeprecated("1.6.0", "diskCache()", "cachem::cache_disk()")
-  if (is_present(exec_missing)) {
-    shinyDeprecated("1.6.0", "diskCache(exec_missing =)")
-  }
+  exec_missing = FALSE,
+  logfile = NULL)
+{
+  shinyDeprecated("cachem::cache_disk", version = "1.5.1")
 
   cachem::cache_disk(
     dir = dir,
@@ -102,13 +86,10 @@ memoryCache <- function(
   max_n = Inf,
   evict = c("lru", "fifo"),
   missing = key_missing(),
-  exec_missing = deprecated(),
+  exec_missing = FALSE,
   logfile = NULL)
 {
-  shinyDeprecated("1.6.0", "diskCache()", "cachem::cache_mem()")
-  if (is_present(exec_missing)) {
-    shinyDeprecated("1.6.0", "diskCache(exec_missing =)")
-  }
+  shinyDeprecated("cachem::cache_mem", version = "1.5.1")
 
   cachem::cache_mem(
     max_size = max_size,

R/devmode.R

@@ -1,369 +0,0 @@
-#' Shiny Developer Mode
-#'
-#' @description `r lifecycle::badge("experimental")`
-#'
-#'   Developer Mode enables a number of [options()] to make a developer's life
-#'   easier, like enabling non-minified JS and printing messages about
-#'   deprecated functions and options.
-#'
-#'   Shiny Developer Mode can be enabled by calling `devmode(TRUE)` and disabled
-#'   by calling `devmode(FALSE)`.
-#'
-#'   Please see the function descriptions for more details.
-#'
-#' @describeIn devmode Function to set two options to enable/disable Shiny
-#'   Developer Mode and Developer messages
-#' @param devmode Logical value which should be set to `TRUE` to enable Shiny
-#'   Developer Mode
-#' @param verbose Logical value which should be set to `TRUE` display Shiny
-#'   Developer messages
-#' @export
-#' @examples
-#' # Enable Shiny Developer mode
-#' devmode()
-#'
-devmode <- function(
-  devmode = getOption("shiny.devmode", TRUE),
-  verbose = getOption("shiny.devmode.verbose", TRUE)
-) {
-  options(
-    shiny.devmode = devmode,
-    shiny.devmode.verbose = verbose
-  )
-}
-
-
-#' @describeIn devmode Determines if Shiny is in Developer Mode. If the
-#'   `getOption("shiny.devmode")` is set to `TRUE` and not in testing inside
-#'   `testthat`, then Shiny Developer Mode is enabled.
-#' @section Avoiding direct dependency on shiny:
-#'
-#'   The methods explained in this help file act independently from the rest of
-#'   Shiny but are included to provide blue prints for your own packages. If
-#'   your package already has (or is willing to take) a dependency on Shiny, we
-#'   recommend using the exported Shiny methods for consistent behavior. Note
-#'   that if you use exported Shiny methods, it will cause the Shiny package to
-#'   load. This may be undesirable if your code will be used in (for example) R
-#'   Markdown documents that do not have a Shiny runtime (`runtime: shiny`).
-#'
-#'   If your package can **not** take a dependency on Shiny, we recommending
-#'   re-implementing these two functions:
-#'
-#' \enumerate{
-#' \item `in_devmode()`:
-#'
-#'   This function should return `TRUE` if `getOption("shiny.devmode")` is set.
-#'   In addition, we strongly recommend that it also checks to make sure
-#'   `testthat` is not testing.
-#'
-#' ```r
-#' in_devmode <- function() {
-#'   isTRUE(getOption("shiny.devmode", FALSE)) &&
-#'     !identical(Sys.getenv("TESTTHAT"), "true")
-#' }
-#' ```
-#'
-#' \item `get_devmode_option(name, default, devmode_default, devmode_message)`:
-#'
-#' This function is similar to `getOption(name, default)`, but when the option
-#' is not set, the default value changes depending on the Dev Mode.
-#' `get_devmode_option()` should be implemented as follows:
-#'
-#' * If not in Dev Mode:
-#'   * Return `getOption(name, default)`.
-#' * If in Dev Mode:
-#'   * Get the global option `getOption(name)` value.
-#'   * If the global option value is set:
-#'     * Return the value.
-#'   * If the global option value is not set:
-#'     * Notify the developer that the Dev Mode default value will be used.
-#'     * Return the Dev Mode default value.
-#'
-#' When notifying the developer that the default value has changed, we strongly
-#' recommend displaying a message (`devmode_message`) to `stderr()` once every 8
-#' hours using [rlang::inform()]. This will keep the author up to date as to
-#' which Dev Mode options are being altered. To allow developers a chance to
-#' disable Dev Mode messages, the message should be skipped if
-#' `getOption("shiny.devmode.verbose", TRUE)` is not `TRUE`.
-#'
-#' ```r
-#' get_devmode_option <- function(name, default = NULL, devmode_default, devmode_message) {
-#'   if (!in_devmode()) {
-#'     # Dev Mode disabled, act like `getOption()`
-#'     return(getOption(name, default = default))
-#'   }
-#'
-#'   # Dev Mode enabled, update the default value for `getOption()`
-#'   getOption(name, default = {
-#'     # Notify developer
-#'     if (
-#'       !missing(devmode_message) &&
-#'       !is.null(devmode_message) &&
-#'       getOption("shiny.devmode.verbose", TRUE)
-#'     ) {
-#'       rlang::inform(
-#'         message = devmode_message,
-#'         .frequency = "regularly",
-#'         .frequency_id = devmode_message,
-#'         .file = stderr()
-#'       )
-#'     }
-#'
-#'     # Return Dev Mode default value `devmode_default`
-#'     devmode_default
-#'   })
-#' }
-#' ```
-#' }
-#'
-#' The remaining functions in this file are used for author convenience and are
-#' not recommended for all reimplementation situations.
-#' @export
-#' @examples
-#' in_devmode() # TRUE/FALSE?
-#'
-in_devmode <- function() {
-  isTRUE(getOption("shiny.devmode", FALSE)) &&
-    # !testthat::is_testing()
-    !identical(Sys.getenv("TESTTHAT"), "true")
-}
-
-in_client_devmode <- function() {
-  # Client-side devmode enables client-side only dev features without local
-  # devmode. Currently, the main feature is the client-side error console.
-  isTRUE(getOption("shiny.client_devmode", FALSE))
-}
-
-#' @describeIn devmode Temporarily set Shiny Developer Mode and Developer
-#'   message verbosity
-#' @param code Code to execute with the temporary Dev Mode options set
-#' @export
-#' @examples
-#' # Execute code in a temporary shiny dev mode
-#' with_devmode(TRUE, in_devmode()) # TRUE
-#'
-with_devmode <- function(
-  devmode,
-  code,
-  verbose = getOption("shiny.devmode.verbose", TRUE)
-) {
-  withr::with_options(
-    list(
-      shiny.devmode = devmode,
-      shiny.devmode.verbose = verbose
-    ),
-    code
-  )
-}
-
-
-#' @describeIn devmode If Shiny Developer Mode and verbosity are enabled,
-#'   displays a message once every 8 hrs (by default)
-#' @param message Developer Mode message to be sent to [rlang::inform()]
-#' @param .frequency Frequency of the Developer Mode message used with
-#'   [rlang::inform()]. Defaults to once every 8 hours.
-#' @param .frequency_id [rlang::inform()] message identifier. Defaults to
-#'   `message`.
-#' @param .file Output connection for [rlang::inform()]. Defaults to [stderr()]
-#' @param ... Parameters passed to [rlang::inform()]
-devmode_inform <- function(
-  message,
-  .frequency = "regularly",
-  .frequency_id = message,
-  .file = stderr(),
-  ...
-) {
-
-  if (!(
-    in_devmode() &&
-      isTRUE(getOption("shiny.devmode.verbose", TRUE))
-  )) {
-    return()
-  }
-  if (is.null(message)) {
-    return()
-  }
-
-  rlang::inform(
-    message = paste0("shiny devmode - ", message),
-    .frequency = .frequency,
-    .frequency_id = .frequency_id,
-    .file = .file,
-    ...
-  )
-}
-
-
-
-
-registered_devmode_options <- NULL
-on_load({
-  registered_devmode_options <- Map$new()
-})
-
-#' @describeIn devmode Registers a Shiny Developer Mode option with an updated
-#'   value and Developer message. This registration method allows package
-#'   authors to write one message in a single location.
-#'
-#'   For example, the following Shiny Developer Mode options are registered:
-#'
-#' ```r
-#' # Reload the Shiny app when a sourced R file changes
-#' register_devmode_option(
-#'   "shiny.autoreload",
-#'   "Turning on shiny autoreload. To disable, call `options(shiny.autoreload = FALSE)`",
-#'   devmode_default = TRUE
-#' )
-#'
-#' # Use the unminified Shiny JavaScript file, `shiny.js`
-#' register_devmode_option(
-#'   "shiny.minified",
-#'   "Using full shiny javascript file. To use the minified version, call `options(shiny.minified = TRUE)`",
-#'   devmode_default = FALSE
-#' )
-#'
-#' # Display the full stack trace when errors occur during Shiny app execution
-#' register_devmode_option(
-#'   "shiny.fullstacktrace",
-#'   "Turning on full stack trace. To disable, call `options(shiny.fullstacktrace = FALSE)`",
-#'   devmode_default = TRUE
-#' )
-#' ```
-#'
-#' Other known, non-Shiny Developer Mode options:
-#'
-#' * Sass:
-#' ```r
-#' # Display the full stack trace when errors occur during Shiny app execution
-#' register_devmode_option(
-#'   "sass.cache",
-#'   "Turning off sass cache. To use default caching, call `options(sass.cache = TRUE)`",
-#'   devmode_default = FALSE
-#' )
-#' ```
-#'
-#' @param name Name of option to look for in `options()`
-#' @param default Default value to return if `in_devmode()` returns
-#'   `TRUE` and the specified option is not set in [`options()`].
-#' @param devmode_message Message to display once every 8 hours when utilizing
-#'   the `devmode_default` value.  If `devmode_message` is missing, the
-#'   registered `devmode_message` value be used.
-#' @param devmode_default Default value to return if `in_devmode()` returns
-#'   `TRUE` and the specified option is not set in [`options()`]. For
-#'   `get_devmode_option()`, if `devmode_default` is missing, the
-#'   registered `devmode_default` value will be used.
-#' @export
-#' @examples
-#' # Ex: Within shiny, we register the option "shiny.minified"
-#' #   to default to `FALSE` when in Dev Mode
-#' \dontrun{register_devmode_option(
-#'   "shiny.minified",
-#'   devmode_message = paste0(
-#'     "Using full shiny javascript file. ",
-#'     "To use the minified version, call `options(shiny.minified = TRUE)`"
-#'   ),
-#'   devmode_default = FALSE
-#' )}
-#'
-register_devmode_option <- function(
-  name,
-  devmode_message = NULL,
-  devmode_default = NULL
-) {
-  if (!is.null(devmode_message)) {
-    stopifnot(length(devmode_message) == 1 && is.character(devmode_message))
-  }
-  registered_devmode_options$set(
-    name,
-    list(devmode_default = devmode_default, devmode_message = devmode_message)
-  )
-}
-
-
-#' @describeIn devmode Provides a consistent way to change the expected
-#'   [getOption()] behavior when Developer Mode is enabled. This method is very
-#'   similar to [getOption()] where the globally set option takes precedence.
-#'   See section "Avoiding direct dependency on shiny" for
-#'   `get_devmode_option()` implementation details.
-#'
-#'   **Package developers:** Register your Dev Mode option using
-#'   `register_devmode_option()` to avoid supplying the same `devmode_default`
-#'   and `devmode_message` values throughout your package. (This requires a
-#'   \pkg{shiny} dependency.)
-#' @export
-#' @examples
-#' # Used within `shiny::runApp(launch.browser)`
-#' get_devmode_option("shiny.minified", TRUE) # TRUE if Dev mode is off
-#' is_minified <- with_devmode(TRUE, {
-#'   get_devmode_option("shiny.minified", TRUE)
-#' })
-#' is_minified # FALSE
-#'
-get_devmode_option <- function(
-  name,
-  default = NULL,
-  devmode_default = missing_arg(),
-  devmode_message = missing_arg()
-) {
-  getOption(
-    name,
-    local({
-      if (!in_devmode()) {
-        # typical case
-        return(default)
-      }
-
-      info <- registered_devmode_options$get(name)
-      if (is.null(info)) {
-        # Not registered,
-        # Warn and return default value
-        rlang::warn(
-          message = paste0(
-            "`get_devmode_option(name)` could not find `name = \"", name, "\"`. ",
-            "Returning `default` value"
-          )
-        )
-        return(default)
-      }
-
-      # display message
-      devmode_inform(
-        maybe_missing(
-          # use provided `devmode_message` value
-          devmode_message,
-          # If `devmode_message` is missing, display registered `devmode_message`
-          default = info$devmode_message
-        )
-      )
-
-      # return value
-      maybe_missing(
-        # use provided `devmode_default` value
-        devmode_default,
-        # if `devmode_default` is missing, provide registered `devmode_default`
-        default = info$devmode_default
-      )
-    })
-  )
-}
-
-
-on_load({
-  register_devmode_option(
-    "shiny.autoreload",
-    "Turning on shiny autoreload. To disable, call `options(shiny.autoreload = FALSE)`",
-    TRUE
-  )
-
-  register_devmode_option(
-    "shiny.minified",
-    "Using full shiny javascript file. To use the minified version, call `options(shiny.minified = TRUE)`",
-    FALSE
-  )
-
-  register_devmode_option(
-    "shiny.fullstacktrace",
-    "Turning on full stack trace. To disable, call `options(shiny.fullstacktrace = FALSE)`",
-    TRUE
-  )
-})

R/extended-task.R

@@ -1,255 +0,0 @@
-#' Task or computation that proceeds in the background
-#'
-#' @description In normal Shiny reactive code, whenever an observer, calc, or
-#'   output is busy computing, it blocks the current session from receiving any
-#'   inputs or attempting to proceed with any other computation related to that
-#'   session.
-#'
-#'   The `ExtendedTask` class allows you to have an expensive operation that is
-#'   started by a reactive effect, and whose (eventual) results can be accessed
-#'   by a regular observer, calc, or output; but during the course of the
-#'   operation, the current session is completely unblocked, allowing the user
-#'   to continue using the rest of the app while the operation proceeds in the
-#'   background.
-#'
-#'   Note that each `ExtendedTask` object does not represent a _single
-#'   invocation_ of its long-running function. Rather, it's an object that is
-#'   used to invoke the function with different arguments, keeps track of
-#'   whether an invocation is in progress, and provides ways to get at the
-#'   current status or results of the operation. A single `ExtendedTask` object
-#'   does not permit overlapping invocations: if the `invoke()` method is called
-#'   before the previous `invoke()` is completed, the new invocation will not
-#'   begin until the previous invocation has completed.
-#'
-#' @section `ExtendedTask` versus asynchronous reactives:
-#'
-#'   Shiny has long supported [using
-#'   \{promises\}](https://rstudio.github.io/promises/articles/promises_06_shiny.html)
-#'   to write asynchronous observers, calcs, or outputs. You may be wondering
-#'   what the differences are between those techniques and this class.
-#'
-#'   Asynchronous observers, calcs, and outputs are not--and have never
-#'   been--designed to let a user start a long-running operation, while keeping
-#'   that very same (browser) session responsive to other interactions. Instead,
-#'   they unblock other sessions, so you can take a long-running operation that
-#'   would normally bring the entire R process to a halt and limit the blocking
-#'   to just the session that started the operation. (For more details, see the
-#'   section on ["The Flush
-#'   Cycle"](https://rstudio.github.io/promises/articles/promises_06_shiny.html#the-flush-cycle).)
-#'
-#'   `ExtendedTask`, on the other hand, invokes an asynchronous function (that
-#'   is, a function that quickly returns a promise) and allows even that very
-#'   session to immediately unblock and carry on with other user interactions.
-#'
-#' @examplesIf rlang::is_interactive() && rlang::is_installed("mirai")
-#' library(shiny)
-#' library(bslib)
-#' library(mirai)
-#'
-#' # Set background processes for running tasks
-#' daemons(1)
-#' # Reset when the app is stopped
-#' onStop(function() daemons(0))
-#'
-#' ui <- page_fluid(
-#'   titlePanel("Extended Task Demo"),
-#'   p(
-#'     'Click the button below to perform a "calculation"',
-#'     "that takes a while to perform."
-#'   ),
-#'   input_task_button("recalculate", "Recalculate"),
-#'   p(textOutput("result"))
-#' )
-#'
-#' server <- function(input, output) {
-#'   rand_task <- ExtendedTask$new(function() {
-#'     mirai(
-#'       {
-#'         # Slow operation goes here
-#'         Sys.sleep(2)
-#'         sample(1:100, 1)
-#'       }
-#'     )
-#'   })
-#'
-#'   # Make button state reflect task.
-#'   # If using R >=4.1, you can do this instead:
-#'   # rand_task <- ExtendedTask$new(...) |> bind_task_button("recalculate")
-#'   bind_task_button(rand_task, "recalculate")
-#'
-#'   observeEvent(input$recalculate, {
-#'     # Invoke the extended in an observer
-#'     rand_task$invoke()
-#'   })
-#'
-#'   output$result <- renderText({
-#'     # React to updated results when the task completes
-#'     number <- rand_task$result()
-#'     paste0("Your number is ", number, ".")
-#'   })
-#' }
-#'
-#' shinyApp(ui, server)
-#'
-#' @export
-ExtendedTask <- R6Class("ExtendedTask", portable = TRUE, cloneable = FALSE,
-  public = list(
-    #' @description
-    #' Creates a new `ExtendedTask` object. `ExtendedTask` should generally be
-    #' created either at the top of a server function, or at the top of a module
-    #' server function.
-    #'
-    #' @param func The long-running operation to execute. This should be an
-    #'   asynchronous function, meaning, it should use the
-    #'   [\{promises\}](https://rstudio.github.io/promises/) package, most
-    #'   likely in conjunction with the
-    #'   [\{mirai\}](https://mirai.r-lib.org) or
-    #'   [\{future\}](https://rstudio.github.io/promises/articles/promises_04_futures.html)
-    #'   package. (In short, the return value of `func` should be a
-    #'   [`mirai`][mirai::mirai()], [`Future`][future::future()], `promise`,
-    #'   or something else that [promises::as.promise()] understands.)
-    #'
-    #'   It's also important that this logic does not read from any
-    #'   reactive inputs/sources, as inputs may change after the function is
-    #'   invoked; instead, if the function needs to access reactive inputs, it
-    #'   should take parameters and the caller of the `invoke()` method should
-    #'   read reactive inputs and pass them as arguments.
-    initialize = function(func) {
-      private$func <- func
-      private$rv_status <- reactiveVal("initial")
-      private$rv_value <- reactiveVal(NULL)
-      private$rv_error <- reactiveVal(NULL)
-      private$invocation_queue <- fastmap::fastqueue()
-    },
-    #' @description
-    #' Starts executing the long-running operation. If this `ExtendedTask` is
-    #' already running (meaning, a previous call to `invoke()` is not yet
-    #' complete) then enqueues this invocation until after the current
-    #' invocation, and any already-enqueued invocation, completes.
-    #'
-    #' @param ... Parameters to use for this invocation of the underlying
-    #'   function. If reactive inputs are needed by the underlying function,
-    #'   they should be read by the caller of `invoke` and passed in as
-    #'   arguments.
-    invoke = function(...) {
-      args <- rlang::dots_list(..., .ignore_empty = "none")
-      call <- rlang::caller_call(n = 0)
-
-      if (
-        isolate(private$rv_status()) == "running" ||
-          private$invocation_queue$size() > 0
-      ) {
-        private$invocation_queue$add(list(args = args, call = call))
-      } else {
-        private$do_invoke(args, call = call)
-      }
-      invisible(NULL)
-    },
-    #' @description
-    #' This is a reactive read that invalidates the caller when the task's
-    #' status changes.
-    #'
-    #' Returns one of the following values:
-    #'
-    #' * `"initial"`: This `ExtendedTask` has not yet been invoked
-    #' * `"running"`: An invocation is currently running
-    #' * `"success"`: An invocation completed successfully, and a value can be
-    #'   retrieved via the `result()` method
-    #' * `"error"`: An invocation completed with an error, which will be
-    #'   re-thrown if you call the `result()` method
-    status = function() {
-      private$rv_status()
-    },
-    #' @description
-    #' Attempts to read the results of the most recent invocation. This is a
-    #' reactive read that invalidates as the task's status changes.
-    #'
-    #' The actual behavior differs greatly depending on the current status of
-    #' the task:
-    #'
-    #' * `"initial"`: Throws a silent error (like [`req(FALSE)`][req()]). If
-    #'   this happens during output rendering, the output will be blanked out.
-    #' * `"running"`: Throws a special silent error that, if it happens during
-    #'   output rendering, makes the output appear "in progress" until further
-    #'   notice.
-    #' * `"success"`: Returns the return value of the most recent invocation.
-    #' * `"error"`: Throws whatever error was thrown by the most recent
-    #'   invocation.
-    #'
-    #' This method is intended to be called fairly naively by any output or
-    #' reactive expression that cares about the output--you just have to be
-    #' aware that if the result isn't ready for whatever reason, processing will
-    #' stop in much the same way as `req(FALSE)` does, but when the result is
-    #' ready you'll get invalidated, and when you run again the result should be
-    #' there.
-    #'
-    #' Note that the `result()` method is generally not meant to be used with
-    #' [observeEvent()], [eventReactive()], [bindEvent()], or [isolate()] as the
-    #' invalidation will be ignored.
-    result = function() {
-      switch (private$rv_status(),
-        running = req(FALSE, cancelOutput="progress"),
-        success = if (private$rv_value()$visible) {
-          private$rv_value()$value
-        } else {
-          invisible(private$rv_value()$value)
-        },
-        error = stop(private$rv_error()),
-        # default case (initial, cancelled)
-        req(FALSE)
-      )
-    }
-  ),
-  private = list(
-    func = NULL,
-    # reactive value with "initial"|"running"|"success"|"error"
-    rv_status = NULL,
-    rv_value = NULL,
-    rv_error = NULL,
-    invocation_queue = NULL,
-
-    do_invoke = function(args, call = NULL) {
-      private$rv_status("running")
-      private$rv_value(NULL)
-      private$rv_error(NULL)
-
-      p <- promises::promise_resolve(
-        maskReactiveContext(do.call(private$func, args))
-      )
-
-      p <- promises::then(
-        p,
-        onFulfilled = function(value, .visible) {
-          private$on_success(list(value = value, visible = .visible))
-        },
-        onRejected = function(error) {
-          private$on_error(error, call = call)
-        }
-      )
-
-      promises::finally(p, onFinally = function() {
-        if (private$invocation_queue$size() > 0) {
-          next_call <- private$invocation_queue$remove()
-          private$do_invoke(next_call$args, next_call$call)
-        }
-      })
-
-      invisible(NULL)
-    },
-
-    on_error = function(err, call = NULL) {
-      cli::cli_warn(
-        "ERROR: An error occurred when invoking the ExtendedTask.",
-        parent = err,
-        call = call
-      )
-      private$rv_status("error")
-      private$rv_error(err)
-    },
-
-    on_success = function(value) {
-      private$rv_status("success")
-      private$rv_value(value)
-    }
-  )
-)

R/font-awesome.R

@@ -0,0 +1,445 @@
+font_awesome_brands <- c(
+  "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

@@ -1,27 +1,70 @@
 # A scope where we can put mutable global state
 .globals <- new.env(parent = emptyenv())
 
+register_s3_method <- function(pkg, generic, class, fun = NULL) {
+  stopifnot(is.character(pkg), length(pkg) == 1)
+  stopifnot(is.character(generic), length(generic) == 1)
+  stopifnot(is.character(class), length(class) == 1)
+
+  if (is.null(fun)) {
+    fun <- get(paste0(generic, ".", class), envir = parent.frame())
+  } else {
+    stopifnot(is.function(fun))
+  }
+
+  if (pkg %in% loadedNamespaces()) {
+    registerS3method(generic, class, fun, envir = asNamespace(pkg))
+  }
+
+  # Always register hook in case pkg is loaded at some
+  # point the future (or, potentially, but less commonly,
+  # unloaded & reloaded)
+  setHook(
+    packageEvent(pkg, "onLoad"),
+    function(...) {
+      registerS3method(generic, class, fun, envir = asNamespace(pkg))
+    }
+  )
+}
+
+register_upgrade_message <- function(pkg, version) {
+
+  msg <- sprintf(
+    "This version of Shiny is designed to work with '%s' >= %s.
+    Please upgrade via install.packages('%s').",
+    pkg, version, pkg
+  )
+
+  if (pkg %in% loadedNamespaces() && !is_available(pkg, version)) {
+    packageStartupMessage(msg)
+  }
+
+  # Always register hook in case pkg is loaded at some
+  # point the future (or, potentially, but less commonly,
+  # unloaded & reloaded)
+  setHook(
+    packageEvent(pkg, "onLoad"),
+    function(...) {
+      if (!is_available(pkg, version)) packageStartupMessage(msg)
+    }
+  )
+}
+
 .onLoad <- function(libname, pkgname) {
   # R's lazy-loading package scheme causes the private seed to be cached in the
   # package itself, making our PRNG completely deterministic. This line resets
   # the private seed during load.
   withPrivateSeed(set.seed(NULL))
 
-  for (expr in on_load_exprs) {
-    eval(expr, envir = environment(.onLoad))
-  }
-
   # Make sure these methods are available to knitr if shiny is loaded but not
   # attached.
-  s3_register("knitr::knit_print", "reactive")
-  s3_register("knitr::knit_print", "shiny.appobj")
-  s3_register("knitr::knit_print", "shiny.render.function")
-}
+  register_s3_method("knitr", "knit_print", "reactive")
+  register_s3_method("knitr", "knit_print", "shiny.appobj")
+  register_s3_method("knitr", "knit_print", "shiny.render.function")
 
-
-on_load_exprs <- list()
-# Register an expression to be evaluated when the package is loaded (in the
-# .onLoad function).
-on_load <- function(expr) {
-  on_load_exprs[[length(on_load_exprs) + 1]] <<- substitute(expr)
+  # Shiny 1.4.0 bumps jQuery 1.x to 3.x, which caused a problem
+  # with static-rendering of htmlwidgets, and htmlwidgets 1.5
+  # includes a fix for this problem
+  # https://github.com/rstudio/shiny/issues/2630
+  register_upgrade_message("htmlwidgets", 1.5)
 }

R/graph.R

@@ -1,3 +1,32 @@
+# 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 = NULL) {
+
+  if (is_available(package, version)) {
+    return()
+  }
+
+  msg <- paste0(
+    sQuote(package),
+    if (is.na(version %||% NA)) "" else paste0("(>= ", version, ")"),
+    " must be installed for this functionality."
+  )
+
+  if (interactive()) {
+    message(msg, "\nWould you like to install it?")
+    if (utils::menu(c("Yes", "No")) == 1) {
+      return(utils::install.packages(package))
+    }
+  }
+
+  stop(msg, call. = FALSE)
+}
+
+
+
+
 # domain is like session
 
 
@@ -19,7 +48,7 @@ reactIdStr <- function(num) {
 #' dependencies and execution in your application.
 #'
 #' To use the reactive log visualizer, start with a fresh R session and
-#' run the command `reactlog::reactlog_enable()`; then launch your
+#' run the command `options(shiny.reactlog=TRUE)`; then launch your
 #' application in the usual way (e.g. using [runApp()]). At
 #' any time you can hit Ctrl+F3 (or for Mac users, Command+F3) in your
 #' web browser to launch the reactive log visualization.
@@ -42,20 +71,16 @@ reactIdStr <- function(num) {
 #' call `reactlogShow()` explicitly.
 #'
 #' For security and performance reasons, do not enable
-#' `options(shiny.reactlog=TRUE)` (or `reactlog::reactlog_enable()`) in
-#' production environments. When the option is enabled, it's possible
-#' for any user of your app to see at least some of the source code of
-#' your reactive expressions and observers. In addition, reactlog
-#' should be considered a memory leak as it will constantly grow and
-#' will never reset until the R session is restarted.
+#' `shiny.reactlog` in production environments. When the option is
+#' enabled, it's possible for any user of your app to see at least some
+#' of the source code of your reactive expressions and observers.
 #'
 #' @name reactlog
 NULL
 
 
-#' @describeIn reactlog Return a list of reactive information.  Can be used in
-#'   conjunction with [reactlog::reactlog_show] to later display the reactlog
-#'   graph.
+#' @describeIn reactlog Return a list of reactive information.  Can be used in conjunction with
+#'   [reactlog::reactlog_show] to later display the reactlog graph.
 #' @export
 reactlog <- function() {
   rLog$asList()
@@ -69,35 +94,19 @@ reactlogShow <- function(time = TRUE) {
   check_reactlog()
   reactlog::reactlog_show(reactlog(), time = time)
 }
-
-#' @describeIn reactlog Resets the entire reactlog stack.  Useful for debugging
-#' and removing all prior reactive history.
+#' @describeIn reactlog This function is deprecated. You should use [reactlogShow()]
+#' @export
+# legacy purposes
+showReactLog <- function(time = TRUE) {
+  shinyDeprecated(new = "`reactlogShow`", version = "1.2.0")
+  reactlogShow(time = time)
+}
+#' @describeIn reactlog Resets the entire reactlog stack.  Useful for debugging and removing all prior reactive history.
 #' @export
 reactlogReset <- function() {
   rLog$reset()
 }
 
-#' @describeIn reactlog Adds "mark" entry into the reactlog stack. This is
-#' useful for programmatically adding a marked entry in the reactlog, rather
-#' than using your keyboard's key combination.
-#'
-#' For example, we can _mark_ the reactlog at the beginning of an
-#' `observeEvent`'s calculation:
-#' ```r
-#' observeEvent(input$my_event_trigger, {
-#'   # Add a mark in the reactlog
-#'   reactlogAddMark()
-#'   # Run your regular event reaction code here...
-#'   ....
-#' })
-#' ```
-#' @param session The Shiny session to assign the mark to. Defaults to the
-#' current session.
-#' @export
-reactlogAddMark <- function(session = getDefaultReactiveDomain()) {
-  rLog$userMark(session)
-}
-
 # called in "/reactlog" middleware
 renderReactlog <- function(sessionToken = NULL, time = TRUE) {
   check_reactlog()
@@ -107,15 +116,28 @@ renderReactlog <- function(sessionToken = NULL, time = TRUE) {
     time = time
   )
 }
-
 check_reactlog <- function() {
-  if (!is_installed("reactlog", reactlog_min_version)) {
-    rlang::check_installed("reactlog", reactlog_min_version)
+  check_suggested("reactlog", reactlog_version())
+}
+# read reactlog version from description file
+# prevents version mismatch in code and description file
+reactlog_version <- function() {
+  desc <- read.dcf(system.file("DESCRIPTION", package = "shiny", mustWork = TRUE))
+  suggests <- desc[1,"Suggests"][[1]]
+  suggests_pkgs <- strsplit(suggests, "\n")[[1]]
+
+  reactlog_info <- suggests_pkgs[grepl("reactlog", suggests_pkgs)]
+  if (length(reactlog_info) == 0) {
+    stop("reactlog can not be found in shiny DESCRIPTION file")
   }
+
+  reactlog_info <- sub("^[^\\(]*\\(", "", reactlog_info)
+  reactlog_info <- sub("\\)[^\\)]*$", "", reactlog_info)
+  reactlog_info <- sub("^[>= ]*", "", reactlog_info)
+
+  package_version(reactlog_info)
 }
 
-# Should match the (suggested) version in DESCRIPTION file
-reactlog_min_version <- "1.0.0"
 
 RLog <- R6Class(
   "RLog",
@@ -123,6 +145,7 @@ RLog <- R6Class(
   private = list(
     option = "shiny.reactlog",
     msgOption = "shiny.reactlog.console",
+
     appendEntry = function(domain, logEntry) {
       if (self$isLogging()) {
         sessionToken <- if (is.null(domain)) NULL else domain$token
@@ -137,19 +160,20 @@ RLog <- R6Class(
   public = list(
     msg = "<MessageLogger>",
     logStack = "<Stack>",
+
     noReactIdLabel = "NoCtxReactId",
     noReactId = reactIdStr("NoCtxReactId"),
     dummyReactIdLabel = "DummyReactId",
     dummyReactId = reactIdStr("DummyReactId"),
+
     asList = function() {
       ret <- self$logStack$as_list()
       attr(ret, "version") <- "1"
       ret
     },
+
     ctxIdStr = function(ctxId) {
-      if (is.null(ctxId) || identical(ctxId, "")) {
-        return(NULL)
-      }
+      if (is.null(ctxId) || identical(ctxId, "")) return(NULL)
       paste0("ctx", ctxId)
     },
     namesIdStr = function(reactId) {
@@ -164,6 +188,7 @@ RLog <- R6Class(
     keyIdStr = function(reactId, key) {
       paste0(reactId, "$", key)
     },
+
     valueStr = function(value, n = 200) {
       if (!self$isLogging()) {
         # return a placeholder string to avoid calling str
@@ -173,9 +198,10 @@ RLog <- R6Class(
         # only capture the first level of the object
         utils::capture.output(utils::str(value, max.level = 1))
       })
-      outputTxt <- paste0(output, collapse = "\n")
+      outputTxt <- paste0(output, collapse="\n")
       msg$shortenString(outputTxt, n = n)
     },
+
     initialize = function(rlogOption = "shiny.reactlog", msgOption = "shiny.reactlog.console") {
       private$option <- rlogOption
       private$msgOption <- msgOption
@@ -185,7 +211,7 @@ RLog <- R6Class(
     reset = function() {
       .globals$reactIdCounter <- 0L
 
-      self$logStack <- fastmap::faststack()
+      self$logStack <- Stack$new()
       self$msg <- MessageLogger$new(option = private$msgOption)
 
       # setup dummy and missing react information
@@ -195,6 +221,7 @@ RLog <- R6Class(
     isLogging = function() {
       isTRUE(getOption(private$option, FALSE))
     },
+
     define = function(reactId, value, label, type, domain) {
       valueStr <- self$valueStr(value)
       if (msg$hasReact(reactId)) {
@@ -225,10 +252,9 @@ RLog <- R6Class(
     defineObserver = function(reactId, label, domain) {
       self$define(reactId, value = NULL, label, "observer", domain)
     },
+
     dependsOn = function(reactId, depOnReactId, ctxId, domain) {
-      if (is.null(reactId)) {
-        return()
-      }
+      if (is.null(reactId)) return()
       ctxId <- ctxIdStr(ctxId)
       msg$log("dependsOn:", msg$reactStr(reactId), " on", msg$reactStr(depOnReactId), msg$ctxStr(ctxId))
       private$appendEntry(domain, list(
@@ -241,6 +267,7 @@ RLog <- R6Class(
     dependsOnKey = function(reactId, depOnReactId, key, ctxId, domain) {
       self$dependsOn(reactId, self$keyIdStr(depOnReactId, key), ctxId, domain)
     },
+
     dependsOnRemove = function(reactId, depOnReactId, ctxId, domain) {
       ctxId <- self$ctxIdStr(ctxId)
       msg$log("dependsOnRemove:", msg$reactStr(reactId), " on", msg$reactStr(depOnReactId), msg$ctxStr(ctxId))
@@ -254,6 +281,7 @@ RLog <- R6Class(
     dependsOnKeyRemove = function(reactId, depOnReactId, key, ctxId, domain) {
       self$dependsOnRemove(reactId, self$keyIdStr(depOnReactId, key), ctxId, domain)
     },
+
     createContext = function(ctxId, label, type, prevCtxId, domain) {
       ctxId <- self$ctxIdStr(ctxId)
       prevCtxId <- self$ctxIdStr(prevCtxId)
@@ -264,9 +292,10 @@ RLog <- R6Class(
         label = msg$shortenString(label),
         type = type,
         prevCtxId = prevCtxId,
-        srcref = as.vector(attr(label, "srcref")), srcfile = attr(label, "srcfile")
+        srcref = as.vector(attr(label, "srcref")), srcfile=attr(label, "srcfile")
       ))
     },
+
     enter = function(reactId, ctxId, type, domain) {
       ctxId <- self$ctxIdStr(ctxId)
       if (identical(type, "isolate")) {
@@ -309,6 +338,7 @@ RLog <- R6Class(
         ))
       }
     },
+
     valueChange = function(reactId, value, domain) {
       valueStr <- self$valueStr(value)
       msg$log("valueChange:", msg$reactStr(reactId), msg$valueStr(valueStr))
@@ -330,6 +360,8 @@ RLog <- R6Class(
     valueChangeKey = function(reactId, key, value, domain) {
       self$valueChange(self$keyIdStr(reactId, key), value, domain)
     },
+
+
     invalidateStart = function(reactId, ctxId, type, domain) {
       ctxId <- self$ctxIdStr(ctxId)
       if (identical(type, "isolate")) {
@@ -372,6 +404,7 @@ RLog <- R6Class(
         ))
       }
     },
+
     invalidateLater = function(reactId, runningCtx, millis, domain) {
       msg$log("invalidateLater: ", millis, "ms", msg$reactStr(reactId), msg$ctxStr(runningCtx))
       private$appendEntry(domain, list(
@@ -381,12 +414,14 @@ RLog <- R6Class(
         millis = millis
       ))
     },
+
     idle = function(domain = NULL) {
       msg$log("idle")
       private$appendEntry(domain, list(
         action = "idle"
       ))
     },
+
     asyncStart = function(domain = NULL) {
       msg$log("asyncStart")
       private$appendEntry(domain, list(
@@ -399,6 +434,7 @@ RLog <- R6Class(
         action = "asyncStop"
       ))
     },
+
     freezeReactiveVal = function(reactId, domain) {
       msg$log("freeze:", msg$reactStr(reactId))
       private$appendEntry(domain, list(
@@ -409,6 +445,7 @@ RLog <- R6Class(
     freezeReactiveKey = function(reactId, key, domain) {
       self$freezeReactiveVal(self$keyIdStr(reactId, key), domain)
     },
+
     thawReactiveVal = function(reactId, domain) {
       msg$log("thaw:", msg$reactStr(reactId))
       private$appendEntry(domain, list(
@@ -419,60 +456,54 @@ RLog <- R6Class(
     thawReactiveKey = function(reactId, key, domain) {
       self$thawReactiveVal(self$keyIdStr(reactId, key), domain)
     },
+
     userMark = function(domain = NULL) {
       msg$log("userMark")
       private$appendEntry(domain, list(
         action = "userMark"
       ))
     }
+
   )
 )
 
-MessageLogger <- R6Class(
+MessageLogger = R6Class(
   "MessageLogger",
   portable = FALSE,
   public = list(
     depth = 0L,
     reactCache = list(),
     option = "shiny.reactlog.console",
+
     initialize = function(option = "shiny.reactlog.console", depth = 0L) {
       if (!missing(depth)) self$depth <- depth
       if (!missing(option)) self$option <- option
     },
+
     isLogging = function() {
       isTRUE(getOption(self$option))
     },
     isNotLogging = function() {
-      !isTRUE(getOption(self$option))
+      ! isTRUE(getOption(self$option))
     },
     depthIncrement = function() {
-      if (self$isNotLogging()) {
-        return(NULL)
-      }
+      if (self$isNotLogging()) return(NULL)
       self$depth <- self$depth + 1L
     },
     depthDecrement = function() {
-      if (self$isNotLogging()) {
-        return(NULL)
-      }
+      if (self$isNotLogging()) return(NULL)
       self$depth <- self$depth - 1L
     },
     hasReact = function(reactId) {
-      if (self$isNotLogging()) {
-        return(FALSE)
-      }
+      if (self$isNotLogging()) return(FALSE)
       !is.null(self$getReact(reactId))
     },
     getReact = function(reactId, force = FALSE) {
-      if (identical(force, FALSE) && self$isNotLogging()) {
-        return(NULL)
-      }
+      if (identical(force, FALSE) && self$isNotLogging()) return(NULL)
       self$reactCache[[reactId]]
     },
     setReact = function(reactObj, force = FALSE) {
-      if (identical(force, FALSE) && self$isNotLogging()) {
-        return(NULL)
-      }
+      if (identical(force, FALSE) && self$isNotLogging()) return(NULL)
       self$reactCache[[reactObj$reactId]] <- reactObj
     },
     shortenString = function(txt, n = 250) {
@@ -487,21 +518,17 @@ MessageLogger <- R6Class(
       return(txt)
     },
     singleLine = function(txt) {
-      gsub("([^\\])\\n", "\\1\\\\n", txt)
+      gsub("[^\\]\\n", "\\\\n", txt)
     },
     valueStr = function(valueStr) {
       paste0(
-        " '", self$shortenString(self$singleLine(valueStr)), "'"
+        " '",  self$shortenString(self$singleLine(valueStr)), "'"
       )
     },
     reactStr = function(reactId) {
-      if (self$isNotLogging()) {
-        return(NULL)
-      }
+      if (self$isNotLogging()) return(NULL)
       reactInfo <- self$getReact(reactId)
-      if (is.null(reactInfo)) {
-        return(" <UNKNOWN_REACTID>")
-      }
+      if (is.null(reactInfo)) return(" <UNKNOWN_REACTID>")
       paste0(
         " ", reactInfo$reactId, ":'", self$shortenString(self$singleLine(reactInfo$label)), "'"
       )
@@ -510,15 +537,11 @@ MessageLogger <- R6Class(
       self$ctxStr(ctxId = NULL, type = type)
     },
     ctxStr = function(ctxId = NULL, type = NULL) {
-      if (self$isNotLogging()) {
-        return(NULL)
-      }
+      if (self$isNotLogging()) return(NULL)
       self$ctxPrevCtxStr(ctxId = ctxId, prevCtxId = NULL, type = type)
     },
     ctxPrevCtxStr = function(ctxId = NULL, prevCtxId = NULL, type = NULL, preCtxIdTxt = " in ") {
-      if (self$isNotLogging()) {
-        return(NULL)
-      }
+      if (self$isNotLogging()) return(NULL)
       paste0(
         if (!is.null(ctxId)) paste0(preCtxIdTxt, ctxId),
         if (!is.null(prevCtxId)) paste0(" from ", prevCtxId),
@@ -526,9 +549,7 @@ MessageLogger <- R6Class(
       )
     },
     log = function(...) {
-      if (self$isNotLogging()) {
-        return(NULL)
-      }
+      if (self$isNotLogging()) return(NULL)
       msg <- paste0(
         paste0(rep("= ", depth), collapse = ""), "- ", paste0(..., collapse = ""),
         collapse = ""
@@ -538,6 +559,5 @@ MessageLogger <- R6Class(
   )
 )
 
-on_load({
-  rLog <- RLog$new("shiny.reactlog", "shiny.reactlog.console")
-})
+#' @include stack.R
+rLog <- RLog$new("shiny.reactlog", "shiny.reactlog.console")

R/history.R

@@ -14,7 +14,7 @@ NULL
 #' depending on the values in the query string / hash (e.g. instead of basing
 #' the conditional on an input or a calculated reactive, you can base it on the
 #' query string). However, note that, if you're changing the query string / hash
-#' programmatically from within the server code, you must use
+#' programatically from within the server code, you must use
 #' `updateQueryString(_yourNewQueryString_, mode = "push")`. The default
 #' `mode` for `updateQueryString` is `"replace"`, which doesn't
 #' raise any events, so any observers or reactives that depend on it will

R/html-deps.R

@@ -40,14 +40,11 @@ createWebDependency <- function(dependency, scrubFile = TRUE) {
 
 # Given a Shiny tag object, process singletons and dependencies. Returns a list
 # with rendered HTML and dependency objects.
-# This implementation is very similar to renderTags(), but ignores
-# <head> handling (it should only be used after the user session has started)
 processDeps <- function(tags, session) {
-  tags <- utils::getFromNamespace("tagify", "htmltools")(tags)
-  ui <- takeSingletons(tags, session$singletons, desingleton = FALSE)$ui
+  ui <- takeSingletons(tags, session$singletons, desingleton=FALSE)$ui
   ui <- surroundSingletons(ui)
   dependencies <- lapply(
-    resolveDependencies(findDependencies(ui, tagify = FALSE)),
+    resolveDependencies(findDependencies(ui)),
     createWebDependency
   )
   names(dependencies) <- NULL

R/htmltools.R

@@ -0,0 +1,11 @@
+#' @import htmltools
+#' @export tags p h1 h2 h3 h4 h5 h6 a br div span pre code img strong em hr
+#' @export tag tagList tagAppendAttributes tagHasAttribute tagGetAttribute tagAppendChild tagAppendChildren tagSetChildren
+#' @export HTML
+#' @export includeHTML includeText includeMarkdown includeCSS includeScript
+#' @export singleton is.singleton
+#' @export validateCssUnit
+#' @export htmlTemplate
+#' @export suppressDependencies
+#' @export withTags
+NULL

R/image-interact-opts.R

@@ -20,6 +20,7 @@
 #'   `delay` milliseconds before sending an event.
 #' @seealso [brushOpts()] for brushing events.
 #' @export
+#' @keywords internal
 clickOpts <- function(id, clip = TRUE) {
   if (is.null(id))
     stop("id must not be NULL")
@@ -75,12 +76,8 @@ hoverOpts <- function(id, delay = 300,
 #'   `imageOutput`/`plotOutput` calls may share the same `id`
 #'   value; brushing one image or plot will cause any other brushes with the
 #'   same `id` to disappear.
-#' @param fill Fill color of the brush. If `'auto'`, it derives from the link
-#'   color of the plot's HTML container (if **thematic** is enabled, and `accent`
-#'   is a non-`'auto'` value, that color is used instead).
-#' @param stroke Outline color of the brush. If `'auto'`, it derives from the
-#'   foreground color of the plot's HTML container (if **thematic** is enabled,
-#'   and `fg` is a non-`'auto'` value, that color is used instead).
+#' @param fill Fill color of the brush.
+#' @param stroke Outline color of the brush.
 #' @param opacity Opacity of the brush
 #' @param delay How long to delay (in milliseconds) when debouncing or
 #'   throttling, before sending the brush data to the server.
@@ -110,13 +107,6 @@ brushOpts <- function(id, fill = "#9cf", stroke = "#036",
   if (is.null(id))
     stop("id must not be NULL")
 
-  if (identical(fill, "auto")) {
-    fill <- getThematicOption("accent", "auto")
-  }
-  if (identical(stroke, "auto")) {
-    stroke <- getThematicOption("fg", "auto")
-  }
-
   list(
     id = id,
     fill = fill,
@@ -129,13 +119,3 @@ brushOpts <- function(id, fill = "#9cf", stroke = "#036",
     resetOnNew = resetOnNew
   )
 }
-
-getThematicOption <- function(name = "", default = NULL, resolve = FALSE) {
-  if (isNamespaceLoaded("thematic")) {
-    # TODO: use :: once thematic is on CRAN
-    tgo <- utils::getFromNamespace("thematic_get_option", "thematic")
-    tgo(name = name, default = default, resolve = resolve)
-  } else {
-    default
-  }
-}

R/image-interact.R

@@ -182,8 +182,8 @@ brushedPoints <- function(df, brush, xvar = NULL, yvar = NULL,
 #  $ xmax     : num 3.78
 #  $ ymin     : num 17.1
 #  $ ymax     : num 20.4
-#  $ panelvar1: chr "6"
-#  $ panelvar2: chr "0
+#  $ panelvar1: int 6
+#  $ panelvar2: int 0
 #  $ coords_css:List of 4
 #   ..$ xmin: int 260
 #   ..$ xmax: int 298
@@ -267,7 +267,6 @@ nearPoints <- function(df, coordinfo, xvar = NULL, yvar = NULL,
     stop("nearPoints: `yvar` ('", yvar ,"')  not in names of input")
 
   # Extract data values from the data frame
-  coordinfo <- fortifyDiscreteLimits(coordinfo)
   x <- asNumber(df[[xvar]], coordinfo$domain$discrete_limits$x)
   y <- asNumber(df[[yvar]], coordinfo$domain$discrete_limits$y)
 
@@ -367,8 +366,8 @@ nearPoints <- function(df, coordinfo, xvar = NULL, yvar = NULL,
 #  $ img_css_ratio:List of 2
 #   ..$ x: num 1.25
 #   ..$ y: num 1.25
-#  $ panelvar1 : chr "6"
-#  $ panelvar2 : chr "0"
+#  $ panelvar1 : int 6
+#  $ panelvar2 : int 0
 #  $ mapping   :List of 4
 #   ..$ x        : chr "wt"
 #   ..$ y        : chr "mpg"
@@ -393,7 +392,6 @@ nearPoints <- function(df, coordinfo, xvar = NULL, yvar = NULL,
 # an input brush
 within_brush <- function(vals, brush, var = "x") {
   var <- match.arg(var, c("x", "y"))
-  brush <- fortifyDiscreteLimits(brush)
   vals <- asNumber(vals, brush$domain$discrete_limits[[var]])
   # It's possible for a non-missing data values to not
   # map to the axis limits, for example:
@@ -416,43 +414,11 @@ asNumber <- function(x, levels = NULL) {
   as.numeric(x)
 }
 
-# Ensure the discrete limits/levels of a coordmap received
-# from the client matches the data structure sent the client.
-#
-# When we construct the coordmap (in getGgplotCoordmap()),
-# we save a character vector which may contain missing values
-# (e.g., c("a", "b", NA)). When that same character is received
-# from the client, it runs through decodeMessage() which sets
-# simplifyVector=FALSE, which means NA are replaced by NULL
-# (because jsonlite::fromJSON('["a", "b", null]') -> list("a", "b", NULL))
-#
-# Thankfully, it doesn't seem like it's meaningful for limits to
-# contains a NULL in the 1st place, so we simply treat NULL like NA.
-# For more context, https://github.com/rstudio/shiny/issues/2666
-fortifyDiscreteLimits <- function(coord) {
-  # Note that discrete_limits$x/y are populated iff
-  # x/y are discrete mappings
-  coord$domain$discrete_limits <- lapply(
-    coord$domain$discrete_limits,
-    function(var) {
-      # if there is an 'explicit' NULL, then the limits are NA
-      if (is.null(var)) return(NA)
-      vapply(var, function(x) {
-        if (is.null(x) || isTRUE(is.na(x))) NA_character_ else x
-      }, character(1))
-    }
-  )
-  coord
-}
-
-
-
 # Given a panelvar value and a vector x, return logical vector indicating which
 # items match the panelvar value. Because the panelvar value is always a
 # string but the vector could be numeric, it might be necessary to coerce the
 # panelvar to a number before comparing to the vector.
 panelMatch <- function(search_value, x) {
-  if (is.null(search_value)) return(is.na(x))
   if (is.numeric(x)) search_value <- as.numeric(search_value)
   x == search_value
 }

R/imageutils.R

@@ -1,30 +1,30 @@
 startPNG <- function(filename, width, height, res, ...) {
-  pngfun <- if ((getOption('shiny.useragg') %||% TRUE) && is_installed("ragg")) {
-    ragg::agg_png
+  # 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') %||% FALSE) && is_available("ragg")) {
+    pngfun <- ragg::agg_png
   } else if (capabilities("aqua")) {
     # i.e., png(type = 'quartz')
-    grDevices::png
-  } else if ((getOption('shiny.usecairo') %||% TRUE) && is_installed("Cairo")) {
-    Cairo::CairoPNG
+    pngfun <- grDevices::png
+  } else if ((getOption('shiny.usecairo') %||% TRUE) && is_available("Cairo")) {
+    pngfun <- Cairo::CairoPNG
   } else {
     # i.e., png(type = 'cairo')
-    grDevices::png
+    pngfun <- grDevices::png
   }
 
-  args <- list2(filename = filename, width = width, height = height, res = res, ...)
-
-  # It's possible for width/height to be NULL/numeric(0) (e.g., when using
-  # suspendWhenHidden=F w/ tabsetPanel(), see rstudio/shiny#1409), so when
-  # this happens let the device determine what the default size should be.
-  if (length(args$width) == 0) args$width <- NULL
-  if (length(args$height) == 0) args$height <- NULL
+  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$bg) && isNamespaceLoaded("thematic")) {
-    args$bg <- getThematicOption("bg", "white")
+    # TODO: use :: once thematic is on CRAN
+    args$bg <- utils::getFromNamespace("thematic_get_option", "thematic")("bg", "white", resolve = FALSE)
     # auto vals aren't resolved until plot time, so if we see one, resolve it
     if (isTRUE("auto" == args$bg)) {
       args$bg <- getCurrentOutputInfo()[["bg"]]()
@@ -58,35 +58,33 @@ startPNG <- function(filename, width, height, res, ...) {
   grDevices::dev.cur()
 }
 
-#' Capture a plot as a PNG file.
+#' Run a plotting function and save the output as a PNG
 #'
-#' The PNG graphics device used is determined in the following order:
-#'   * If the ragg package is installed (and the `shiny.useragg` is not
-#'    set to `FALSE`), then use [ragg::agg_png()].
-#'   * If a quartz device is available (i.e., `capabilities("aqua")` is
-#'    `TRUE`), then use `png(type = "quartz")`.
-#'   * If the Cairo package is installed (and the `shiny.usecairo` option
-#'    is not set to `FALSE`), then use [Cairo::CairoPNG()].
-#'   * Otherwise, use [grDevices::png()]. In this case, Linux and Windows
-#'    may not antialias some point shapes, resulting in poor quality output.
+#' This function returns the name of the PNG file that it generates. In
+#' essence, it calls `png()`, then `func()`, then `dev.off()`.
+#' So `func` must be a function that will generate a plot when used this
+#' way.
 #'
-#' @details
-#'   A `NULL` value provided to `width` or `height` is ignored (i.e., the
-#'   default `width` or `height` of the graphics device is used).
+#' For output, it will try to use the following devices, in this order:
+#' quartz (via [grDevices::png()]), then [Cairo::CairoPNG()],
+#' and finally [grDevices::png()]. This is in order of quality of
+#' output. Notably, plain `png` output on Linux and Windows may not
+#' antialias some point shapes, resulting in poor quality output.
+#'
+#' In some cases, `Cairo()` provides output that looks worse than
+#' `png()`. To disable Cairo output for an app, use
+#' `options(shiny.usecairo=FALSE)`.
 #'
 #' @param func A function that generates a plot.
 #' @param filename The name of the output file. Defaults to a temp file with
 #'   extension `.png`.
 #' @param width Width in pixels.
 #' @param height Height in pixels.
-#' @param res Resolution in pixels per inch. This value is passed to the
-#'   graphics device. Note that this affects the resolution of PNG rendering in
+#' @param res Resolution 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 ... Arguments to be passed through to the graphics device. These can
-#'   be used to set the width, height, background color, etc.
-#'
-#' @return A path to the newly generated PNG file.
-#'
+#' @param ... Arguments to be passed through to [grDevices::png()].
+#'   These can be used to set the width, height, background color, etc.
 #' @export
 plotPNG <- function(func, filename=tempfile(fileext='.png'),
                     width=400, height=400, res=72, ...) {
@@ -97,6 +95,7 @@ plotPNG <- function(func, filename=tempfile(fileext='.png'),
   filename
 }
 
+#' @importFrom grDevices dev.set dev.cur
 createGraphicsDevicePromiseDomain <- function(which = dev.cur()) {
   force(which)
 

R/input-action.R

@@ -7,8 +7,6 @@
 #' @param label The contents of the button or link--usually a text label, but
 #'   you could also use any other HTML, like an image.
 #' @param icon An optional [icon()] to appear on the button.
-#' @param disabled If `TRUE`, the button will not be clickable. Use
-#'   [updateActionButton()] to dynamically enable/disable the button.
 #' @param ... Named attributes to be applied to the button or link.
 #'
 #' @family input elements
@@ -51,29 +49,16 @@
 #'   * Event handlers (e.g., [observeEvent()], [eventReactive()]) won't execute on initial load.
 #'   * Input validation (e.g., [req()], [need()]) will fail on initial load.
 #' @export
-actionButton <- function(inputId, label, icon = NULL, width = NULL,
-  disabled = FALSE, ...) {
+actionButton <- function(inputId, label, icon = NULL, width = NULL, ...) {
 
   value <- restoreInput(id = inputId, default = NULL)
 
-  icon <- validateIcon(icon)
-
-  if (!is.null(icon)) {
-    icon <- span(icon, class = "action-icon")
-  }
-
-  if (!is.null(label)) {
-    label <- span(label, class = "action-label")
-  }
-
-  tags$button(
-    id = inputId,
-    style = css(width = validateCssUnit(width)),
-    type = "button",
-    class = "btn btn-default action-button",
+  tags$button(id=inputId,
+    style = if (!is.null(width)) paste0("width: ", validateCssUnit(width), ";"),
+    type="button",
+    class="btn btn-default action-button",
     `data-val` = value,
-    disabled = if (isTRUE(disabled)) NA else NULL,
-    icon, label,
+    list(validateIcon(icon), label),
     ...
   )
 }
@@ -83,40 +68,30 @@ actionButton <- function(inputId, label, icon = NULL, width = NULL,
 actionLink <- function(inputId, label, icon = NULL, ...) {
   value <- restoreInput(id = inputId, default = NULL)
 
-  icon <- validateIcon(icon)
-
-  if (!is.null(icon)) {
-    icon <- span(icon, class = "action-icon")
-  }
-
-  if (!is.null(label)) {
-    label <- span(label, class = "action-label")
-  }
-
-  tags$a(
-    id = inputId,
-    href = "#",
-    class = "action-button action-link",
+  tags$a(id=inputId,
+    href="#",
+    class="action-button",
     `data-val` = value,
-    icon, label,
+    list(validateIcon(icon), label),
     ...
   )
 }
 
 
-# Throw an informative warning if icon isn't html-ish
+# Check that the icon parameter is valid:
+# 1) Check  if the user wants to actually add an icon:
+#    -- if icon=NULL, it means leave the icon unchanged
+#    -- if icon=character(0), it means don't add an icon or, more usefully,
+#       remove the previous icon
+# 2) If so, check that the icon has the right format (this does not check whether
+# it is a *real* icon - currently that would require a massive cross reference
+# with the "font-awesome" and the "glyphicon" libraries)
 validateIcon <- function(icon) {
-  if (length(icon) == 0) {
+  if (is.null(icon) || identical(icon, character(0))) {
     return(icon)
+  } else if (inherits(icon, "shiny.tag") && icon$name == "i") {
+    return(icon)
+  } else {
+    stop("Invalid icon. Use Shiny's 'icon()' function to generate a valid icon")
   }
-  if (!isTagLike(icon)) {
-    rlang::warn(
-      c(
-        "It appears that a non-HTML value was provided to `icon`.",
-        i = "Try using a `shiny::icon()` (or an equivalent) to get an icon."
-      ),
-      class = "shiny-validate-icon"
-    )
-  }
-  icon
 }

R/input-checkbox.R

@@ -31,12 +31,12 @@ checkboxInput <- function(inputId, label, value = FALSE, width = NULL) {
 
   value <- restoreInput(id = inputId, default = value)
 
-  inputTag <- tags$input(id = inputId, type="checkbox", class = "shiny-input-checkbox")
+  inputTag <- tags$input(id = inputId, type="checkbox")
   if (!is.null(value) && value)
     inputTag$attribs$checked <- "checked"
 
   div(class = "form-group shiny-input-container",
-    style = css(width = validateCssUnit(width)),
+    style = if (!is.null(width)) paste0("width: ", validateCssUnit(width), ";"),
     div(class = "checkbox",
       tags$label(inputTag, tags$span(label))
     )

R/input-checkboxgroup.R

@@ -94,14 +94,10 @@ checkboxGroupInput <- function(inputId, label, choices = NULL, selected = NULL,
     divClass <- paste(divClass, "shiny-input-container-inline")
 
   # return label and select tag
-  inputLabel <- shinyInputLabel(inputId, label)
   tags$div(id = inputId,
-    style = css(width = validateCssUnit(width)),
+    style = if (!is.null(width)) paste0("width: ", validateCssUnit(width), ";"),
     class = divClass,
-    # https://www.w3.org/TR/wai-aria-practices/examples/checkbox/checkbox-1/checkbox-1.html
-    role = "group",
-    `aria-labelledby` = inputLabel$attribs$id,
-    inputLabel,
+    shinyInputLabel(inputId, label),
     options
   )
 }

R/input-date.R

@@ -105,7 +105,7 @@ dateInput <- function(inputId, label, value = NULL, min = NULL, max = NULL,
 
   tags$div(id = inputId,
     class = "shiny-date-input form-group shiny-input-container",
-    style = css(width = validateCssUnit(width)),
+    style = if (!is.null(width)) paste0("width: ", validateCssUnit(width), ";"),
 
     shinyInputLabel(inputId, label),
     tags$input(type = "text",
@@ -133,15 +133,15 @@ dateInput <- function(inputId, label, value = NULL, min = NULL, max = NULL,
 }
 
 
+datePickerVersion <- "1.9.0"
+
 datePickerDependency <- function(theme) {
   list(
     htmlDependency(
       name = "bootstrap-datepicker-js",
-      version = version_bs_date_picker,
-      src = "www/shared/datepicker",
-      package = "shiny",
-      script = if (getOption("shiny.minified", TRUE)) "js/bootstrap-datepicker.min.js"
-               else                                   "js/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();
@@ -153,28 +153,23 @@ datePickerDependency <- function(theme) {
   )
 }
 
-datePickerSass <- function() {
-  sass::sass_file(
-    system_file(package = "shiny", "www/shared/datepicker/scss/build3.scss")
-  )
-}
-
 datePickerCSS <- function(theme) {
   if (!is_bs_theme(theme)) {
     return(htmlDependency(
       name = "bootstrap-datepicker-css",
-      version = version_bs_date_picker,
-      src = "www/shared/datepicker",
-      package = "shiny",
+      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")
+
   bslib::bs_dependency(
-    input = datePickerSass(),
+    input = sass::sass_file(scss_file),
     theme = theme,
     name = "bootstrap-datepicker",
-    version = version_bs_date_picker,
-    cache_key_extra = get_package_version("shiny")
+    version = datePickerVersion,
+    cache_key_extra = shinyPackageVersion()
   )
 }

R/input-daterange.R

@@ -92,7 +92,7 @@ dateRangeInput <- function(inputId, label, start = NULL, end = NULL,
   attachDependencies(
     div(id = inputId,
       class = "shiny-date-range-input form-group shiny-input-container",
-      style = css(width = validateCssUnit(width)),
+      style = if (!is.null(width)) paste0("width: ", validateCssUnit(width), ";"),
 
       shinyInputLabel(inputId, label),
       # input-daterange class is needed for dropdown behavior

R/input-file.R

@@ -2,13 +2,8 @@
 #'
 #' Create a file upload control that can be used to upload one or more files.
 #'
-#' Whenever a file upload completes, the corresponding input variable is set to
-#' a dataframe. See the `Server value` section.
-#'
-#' Each time files are uploaded, they are written to a new random subdirectory
-#' inside of R's process-level temporary directory. The Shiny user session keeps
-#' track of all uploads in the session, and when the session ends, Shiny deletes
-#' all of the subdirectories where files where uploaded to.
+#' Whenever a file upload completes, the corresponding input variable is set
+#' to a dataframe. See the `Server value` section.
 #'
 #' @family input elements
 #'
@@ -16,30 +11,19 @@
 #' @param multiple Whether the user should be allowed to select and upload
 #'   multiple files at once. **Does not work on older browsers, including
 #'   Internet Explorer 9 and earlier.**
-#' @param accept A character vector of "unique file type specifiers" which gives
-#'   the browser a hint as to the type of file the server expects. Many browsers
-#'   use this prevent the user from selecting an invalid file.
+#' @param accept A character vector of "unique file type specifiers" which
+#'   gives the browser a hint as to the type of file the server expects.
+#'   Many browsers use this prevent the user from selecting an invalid file.
 #'
 #'   A unique file type specifier can be:
 #'   * A case insensitive extension like `.csv` or `.rds`.
 #'   * A valid MIME type, like `text/plain` or `application/pdf`
 #'   * One of `audio/*`, `video/*`, or `image/*` meaning any audio, video,
-#'   or image type, respectively.
+#'     or image type, respectively.
 #' @param buttonLabel The label used on the button. Can be text or an HTML tag
 #'   object.
 #' @param placeholder The text to show before a file has been uploaded.
-#' @param capture What source to use for capturing image, audio or video data.
-#'   This attribute facilitates user access to a device's media capture
-#'   mechanism, such as a camera, or microphone, from within a file upload
-#'   control.
 #'
-#'   A value of `user` indicates that the user-facing camera and/or microphone
-#'   should be used. A value of `environment` specifies that the outward-facing
-#'   camera and/or microphone should be used.
-#'
-#'   By default on most phones, this will accept still photos or video. For
-#'   still photos only, also use `accept="image/*"`. For video only, use
-#'   `accept="video/*"`.
 #' @examples
 #' ## Only run examples in interactive R sessions
 #' if (interactive()) {
@@ -72,9 +56,7 @@
 #' }
 #'
 #' @section Server value:
-#'
-#'   A `data.frame` that contains one row for each selected file, and following
-#'   columns:
+#' A `data.frame` that contains one row for each selected file, and following columns:
 #' \describe{
 #'   \item{`name`}{The filename provided by the web browser. This is
 #'   **not** the path to read to get at the actual data that was uploaded
@@ -91,8 +73,7 @@
 #'
 #' @export
 fileInput <- function(inputId, label, multiple = FALSE, accept = NULL,
-  width = NULL, buttonLabel = "Browse...", placeholder = "No file selected",
-  capture = NULL) {
+  width = NULL, buttonLabel = "Browse...", placeholder = "No file selected") {
 
   restoredValue <- restoreInput(id = inputId, default = NULL)
 
@@ -108,7 +89,6 @@ fileInput <- function(inputId, label, multiple = FALSE, accept = NULL,
 
   inputTag <- tags$input(
     id = inputId,
-    class = "shiny-input-file",
     name = inputId,
     type = "file",
     # Don't use "display: none;" style, which causes keyboard accessibility issue; instead use the following workaround: https://css-tricks.com/places-its-tempting-to-use-display-none-but-dont/
@@ -121,12 +101,9 @@ fileInput <- function(inputId, label, multiple = FALSE, accept = NULL,
   if (length(accept) > 0)
     inputTag$attribs$accept <- paste(accept, collapse=',')
 
-  if (!is.null(capture)) {
-    inputTag$attribs$capture <- capture
-  }
 
   div(class = "form-group shiny-input-container",
-    style = css(width = validateCssUnit(width)),
+    style = if (!is.null(width)) paste0("width: ", validateCssUnit(width), ";"),
     shinyInputLabel(inputId, label),
 
     div(class = "input-group",

R/input-numeric.R

@@ -29,37 +29,23 @@
 #' A numeric vector of length 1.
 #'
 #' @export
-numericInput <- function(
-  inputId,
-  label,
-  value,
-  min = NA,
-  max = NA,
-  step = NA,
-  width = NULL,
-  ...,
-  updateOn = c("change", "blur")
-) {
-  rlang::check_dots_empty()
-  updateOn <- rlang::arg_match(updateOn)
+numericInput <- function(inputId, label, value, min = NA, max = NA, step = NA,
+  width = NULL) {
 
   value <- restoreInput(id = inputId, default = value)
 
   # build input tag
-  inputTag <- tags$input(
-    id = inputId,
-    type = "number",
-    class = "shiny-input-number form-control",
-    value = formatNoSci(value),
-    `data-update-on` = updateOn
-  )
-  if (!is.na(min)) inputTag$attribs$min = min
-  if (!is.na(max)) inputTag$attribs$max = max
-  if (!is.na(step)) inputTag$attribs$step = step
+  inputTag <- tags$input(id = inputId, type = "number", class="form-control",
+                         value = formatNoSci(value))
+  if (!is.na(min))
+    inputTag$attribs$min = min
+  if (!is.na(max))
+    inputTag$attribs$max = max
+  if (!is.na(step))
+    inputTag$attribs$step = step
 
-  div(
-    class = "form-group shiny-input-container",
-    style = css(width = validateCssUnit(width)),
+  div(class = "form-group shiny-input-container",
+    style = if (!is.null(width)) paste0("width: ", validateCssUnit(width), ";"),
     shinyInputLabel(inputId, label),
     inputTag
   )

R/input-password.R

@@ -30,29 +30,12 @@
 #' shinyApp(ui, server)
 #' }
 #' @export
-passwordInput <- function(
-  inputId,
-  label,
-  value = "",
-  width = NULL,
-  placeholder = NULL,
-  ...,
-  updateOn = c("change", "blur")
-) {
-  rlang::check_dots_empty()
-  updateOn <- rlang::arg_match(updateOn)
-
-  div(
-    class = "form-group shiny-input-container",
-    style = css(width = validateCssUnit(width)),
+passwordInput <- function(inputId, label, value = "", width = NULL,
+                          placeholder = NULL) {
+  div(class = "form-group shiny-input-container",
+    style = if (!is.null(width)) paste0("width: ", validateCssUnit(width), ";"),
     shinyInputLabel(inputId, label),
-    tags$input(
-      id = inputId,
-      type = "password",
-      class = "shiny-input-password form-control",
-      value = value,
-      placeholder = placeholder,
-      `data-update-on` = updateOn
-    )
+    tags$input(id = inputId, type="password", class="form-control", value=value,
+               placeholder = placeholder)
   )
 }

R/input-radiobuttons.R

@@ -104,14 +104,10 @@ radioButtons <- function(inputId, label, choices = NULL, selected = NULL,
   divClass <- "form-group shiny-input-radiogroup shiny-input-container"
   if (inline) divClass <- paste(divClass, "shiny-input-container-inline")
 
-  inputLabel <- shinyInputLabel(inputId, label)
   tags$div(id = inputId,
-    style = css(width = validateCssUnit(width)),
+    style = if (!is.null(width)) paste0("width: ", validateCssUnit(width), ";"),
     class = divClass,
-    # https://www.w3.org/TR/2017/WD-wai-aria-practices-1.1-20170628/examples/radio/radio-1/radio-1.html
-    role = "radiogroup",
-    `aria-labelledby` = inputLabel$attribs$id,
-    inputLabel,
+    shinyInputLabel(inputId, label),
     options
   )
 }

R/input-select.R

@@ -4,7 +4,7 @@
 #' from a list of values.
 #'
 #' By default, `selectInput()` and `selectizeInput()` use the JavaScript library
-#' \pkg{selectize.js} (<https://selectize.dev/>) instead of
+#' \pkg{selectize.js} (<https://github.com/selectize/selectize.js>) instead of
 #' the basic select input element. To use the standard HTML select input
 #' element, use `selectInput()` with `selectize=FALSE`.
 #'
@@ -106,7 +106,6 @@ selectInput <- function(inputId, label, choices, selected = NULL,
   # create select tag and add options
   selectTag <- tags$select(
     id = inputId,
-    class = "shiny-input-select",
     class = if (!selectize) "form-control",
     size = size,
     selectOptions(choices, selected, inputId, selectize)
@@ -117,7 +116,7 @@ selectInput <- function(inputId, label, choices, selected = NULL,
   # return label and select tag
   res <- div(
     class = "form-group shiny-input-container",
-    style = css(width = validateCssUnit(width)),
+    style = if (!is.null(width)) paste0("width: ", validateCssUnit(width), ";"),
     shinyInputLabel(inputId, label),
     div(selectTag)
   )
@@ -173,7 +172,7 @@ needOptgroup <- function(choices) {
 
 #' @rdname selectInput
 #' @param ... Arguments passed to `selectInput()`.
-#' @param options A list of options. See the documentation of \pkg{selectize.js}(<https://selectize.dev/docs/usage>)
+#' @param options A list of options. See the documentation of \pkg{selectize.js}
 #'   for possible options (character option values inside [base::I()] will
 #'   be treated as literal JavaScript code; see [renderDataTable()]
 #'   for details).
@@ -198,12 +197,6 @@ selectizeInput <- function(inputId, ..., options = NULL, width = NULL) {
 
 # given a select input and its id, selectize it
 selectizeIt <- function(inputId, select, options, nonempty = FALSE) {
-  if (length(options) == 0) {
-    # For NULL and empty unnamed list, replace with an empty named list, so that
-    # it will get translated to {} in JSON later on.
-    options <- empty_named_list()
-  }
-
   # Make sure accessibility plugin is included
   if (!('selectize-plugin-a11y' %in% options$plugins)) {
     options$plugins <- c(options$plugins, list('selectize-plugin-a11y'))
@@ -211,10 +204,18 @@ selectizeIt <- function(inputId, select, options, nonempty = FALSE) {
 
   res <- checkAsIs(options)
 
-  deps <- list(selectizeDependency())
+  selectizeDep <- selectizeDependency()
 
   if ('drag_drop' %in% options$plugins) {
-    deps[[length(deps) + 1]] <- jqueryuiDependency()
+    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
@@ -224,11 +225,11 @@ selectizeIt <- function(inputId, select, options, nonempty = FALSE) {
       type = 'application/json',
       `data-for` = inputId, `data-nonempty` = if (nonempty) '',
       `data-eval` = if (length(res$eval)) HTML(toJSON(res$eval)),
-      HTML(toJSON(res$options))
+      if (length(res$options)) HTML(toJSON(res$options)) else '{}'
     )
   )
 
-  attachDependencies(select, deps)
+  attachDependencies(select, selectizeDep)
 }
 
 
@@ -237,12 +238,20 @@ selectizeDependency <- function() {
 }
 
 selectizeDependencyFunc <- function(theme) {
+  selectizeVersion <- "0.12.4"
   if (!is_bs_theme(theme)) {
-    return(selectizeStaticDependency(version_selectize))
+    return(selectizeStaticDependency(selectizeVersion))
   }
 
-  bs_version <- bslib::theme_version(theme)
-
+  selectizeDir <- system.file(package = "shiny", "www/shared/selectize/")
+  stylesheet <- file.path(
+    selectizeDir, "scss",
+    if ("3" %in% bslib::theme_version(theme)) {
+      "selectize.bootstrap3.scss"
+    } else {
+      "selectize.bootstrap4.scss"
+    }
+  )
   # It'd be cleaner to ship the JS in a separate, href-based,
   # HTML dependency (which we currently do for other themable widgets),
   # but DT, crosstalk, and maybe other pkgs include selectize JS/CSS
@@ -250,46 +259,28 @@ selectizeDependencyFunc <- function(theme) {
   # name, the JS/CSS would be loaded/included twice, which leads to
   # strange issues, especially since we now include a 3rd party
   # accessibility plugin https://github.com/rstudio/shiny/pull/3153
-  selectizeDir <- system_file(package = "shiny", "www/shared/selectize/")
-  script <- file.path(selectizeDir, selectizeScripts())
-
+  script <- file.path(
+    selectizeDir, c("js/selectize.min.js", "accessibility/js/selectize-plugin-a11y.min.js")
+  )
   bslib::bs_dependency(
-    input = selectizeSass(bs_version),
+    input = sass::sass_file(stylesheet),
     theme = theme,
     name = "selectize",
-    version = version_selectize,
-    cache_key_extra = get_package_version("shiny"),
+    version = selectizeVersion,
+    cache_key_extra = shinyPackageVersion(),
     .dep_args = list(script = script)
   )
 }
 
-selectizeSass <- function(bs_version) {
-  selectizeDir <- system_file(package = "shiny", "www/shared/selectize/")
-  stylesheet <- file.path(
-    selectizeDir, "scss", paste0("selectize.bootstrap", bs_version, ".scss")
-  )
-  sass::sass_file(stylesheet)
-}
-
 selectizeStaticDependency <- function(version) {
   htmlDependency(
-    "selectize",
-    version,
-    src = "www/shared/selectize",
-    package = "shiny",
+    "selectize", version,
+    src = c(href = "shared/selectize"),
     stylesheet = "css/selectize.bootstrap3.css",
-    script = selectizeScripts()
-  )
-}
-
-selectizeScripts <- function() {
-  isMinified <- isTRUE(get_devmode_option("shiny.minified", TRUE))
-  paste0(
-    c(
-      "js/selectize",
-      "accessibility/js/selectize-plugin-a11y"
-    ),
-    if (isMinified) ".min.js" else ".js"
+    script = c(
+      "js/selectize.min.js",
+      "accessibility/js/selectize-plugin-a11y.min.js"
+    )
   )
 }
 
@@ -301,7 +292,7 @@ selectizeScripts <- function() {
 #'
 #' By default, `varSelectInput()` and `selectizeInput()` use the
 #' JavaScript library \pkg{selectize.js}
-#' (<https://selectize.dev/>) to instead of the basic
+#' (<https://github.com/selectize/selectize.js>) to instead of the basic
 #' select input element. To use the standard HTML select input element, use
 #' `selectInput()` with `selectize=FALSE`.
 #'
@@ -397,7 +388,7 @@ varSelectInput <- function(
 
 #' @rdname varSelectInput
 #' @param ... Arguments passed to `varSelectInput()`.
-#' @param options A list of options. See the documentation of \pkg{selectize.js}(<https://selectize.dev/docs/usage>)
+#' @param options A list of options. See the documentation of \pkg{selectize.js}
 #'   for possible options (character option values inside [base::I()] will
 #'   be treated as literal JavaScript code; see [renderDataTable()]
 #'   for details).

R/input-slider.R

@@ -1,24 +1,25 @@
 #' Slider Input Widget
 #'
-#' Constructs a slider widget to select a number, date, or date-time from a
-#' range.
+#' Constructs a slider widget to select a numeric value from a range.
 #'
 #' @inheritParams textInput
-#' @param min,max The minimum and maximum values (inclusive) that can be
-#'   selected.
-#' @param value The initial value of the slider, either a number, a date
-#'   (class Date), or a date-time (class POSIXt). A length one vector will
-#'   create a regular slider; a length two vector will create a double-ended
-#'   range slider. Must lie between `min` and `max`.
+#' @param min The minimum value (inclusive) that can be selected.
+#' @param max The maximum value (inclusive) that can be selected.
+#' @param value The initial value of the slider. A numeric vector of length one
+#'   will create a regular slider; a numeric vector of length two will create a
+#'   double-ended range slider. A warning will be issued if the value doesn't
+#'   fit between `min` and `max`.
 #' @param step Specifies the interval between each selectable value on the
-#'   slider. Either `NULL`, the default, which uses a heuristic to determine the
-#'   step size or a single number. If the values are dates, `step` is in days;
-#'   if the values are date-times, `step` is in seconds.
+#'   slider (if `NULL`, a heuristic is used to determine the step size). If
+#'   the values are dates, `step` is in days; if the values are times
+#'   (POSIXt), `step` is in seconds.
 #' @param round `TRUE` to round all values to the nearest integer;
 #'   `FALSE` if no rounding is desired; or an integer to round to that
 #'   number of digits (for example, 1 will round to the nearest 10, and -2 will
 #'   round to the nearest .01). Any rounding will be applied after snapping to
 #'   the nearest step.
+#' @param format Deprecated.
+#' @param locale Deprecated.
 #' @param ticks `FALSE` to hide tick marks, `TRUE` to show them
 #'   according to some simple heuristics.
 #' @param animate `TRUE` to show simple animation controls with default
@@ -71,15 +72,22 @@
 #' }
 #'
 #' @section Server value:
-#' A number, date, or date-time (depending on the class of `value`), or
-#' in the case of slider range, a vector of two numbers/dates/date-times.
+#' A number, or in the case of slider range, a vector of two numbers.
 #'
 #' @export
 sliderInput <- function(inputId, label, min, max, value, step = NULL,
-                        round = FALSE, ticks = TRUE, animate = FALSE,
-                        width = NULL, sep = ",", pre = NULL, post = NULL,
-                        timeFormat = NULL, timezone = NULL, dragRange = TRUE) {
-  validate_slider_value(min, max, value, "sliderInput")
+                        round = FALSE, format = NULL, locale = NULL,
+                        ticks = TRUE, animate = FALSE, width = NULL, sep = ",",
+                        pre = NULL, post = NULL, timeFormat = NULL,
+                        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")
+  }
+  if (!missing(locale)) {
+    shinyDeprecated(msg = "The `locale` argument to sliderInput is deprecated. Use `sep`, `pre`, and `post` instead.",
+                    version = "0.10.2.2")
+  }
 
   dataType <- getSliderType(min, max, value)
 
@@ -167,7 +175,7 @@ sliderInput <- function(inputId, label, min, max, value, step = NULL,
   })
 
   sliderTag <- div(class = "form-group shiny-input-container",
-    style = css(width = validateCssUnit(width)),
+    style = if (!is.null(width)) paste0("width: ", validateCssUnit(width), ";"),
     shinyInputLabel(inputId, label),
     do.call(tags$input, sliderProps)
   )
@@ -201,53 +209,59 @@ sliderInput <- function(inputId, label, min, max, value, step = NULL,
 }
 
 
+ionRangeSliderVersion <- "2.3.1"
+
 ionRangeSliderDependency <- function() {
   list(
     # ion.rangeSlider also needs normalize.css, which is already included in Bootstrap.
     htmlDependency(
-      "ionrangeslider-javascript",
-      version_ion_range_slider,
-      src = "www/shared/ionrangeslider",
-      package = "shiny",
+      "ionrangeslider-javascript", ionRangeSliderVersion,
+      src = c(href = "shared/ionrangeslider"),
       script = "js/ion.rangeSlider.min.js"
     ),
     htmlDependency(
-      "strftime",
-      version_strftime,
-      src = "www/shared/strftime",
-      package = "shiny",
+      "strftime", "0.9.2",
+      src = c(href = "shared/strftime"),
       script = "strftime-min.js"
     ),
     bslib::bs_dependency_defer(ionRangeSliderDependencyCSS)
   )
 }
 
-ionRangeSliderDependencySass <- function() {
-  list(
-    list(accent = "$component-active-bg"),
-    sass::sass_file(
-      system_file(package = "shiny", "www/shared/ionrangeslider/scss/shiny.scss")
-    )
-  )
-}
-
 ionRangeSliderDependencyCSS <- function(theme) {
   if (!is_bs_theme(theme)) {
     return(htmlDependency(
       "ionrangeslider-css",
-      version_ion_range_slider,
-      src = "www/shared/ionrangeslider",
-      package = "shiny",
+      ionRangeSliderVersion,
+      src = c(href = "shared/ionrangeslider"),
       stylesheet = "css/ion.rangeSlider.css"
     ))
   }
 
+  # Remap some variable names for ionRangeSlider's scss
+  sass_input <- list(
+    list(
+      # The bootswatch materia theme sets $input-bg: transparent;
+      # which is an issue for the slider's handle(s) (#3130)
+      bg = "if(alpha($input-bg)==0, $body-bg, $input-bg)",
+      fg = sprintf(
+        "if(alpha($input-color)==0, $%s, $input-color)",
+        if ("3" %in% bslib::theme_version(theme)) "text-color" else "body-color"
+      ),
+      accent = "$component-active-bg",
+      `font-family` = "$font-family-base"
+    ),
+    sass::sass_file(
+      system.file(package = "shiny", "www/shared/ionrangeslider/scss/shiny.scss")
+    )
+  )
+
   bslib::bs_dependency(
-    input = ionRangeSliderDependencySass(),
+    input = sass_input,
     theme = theme,
     name = "ionRangeSlider",
-    version = version_ion_range_slider,
-    cache_key_extra = get_package_version("shiny")
+    version = ionRangeSliderVersion,
+    cache_key_extra = shinyPackageVersion()
   )
 }
 
@@ -282,37 +296,6 @@ findStepSize <- function(min, max, step) {
   }
 }
 
-# Throw a warning if ever `value` is not in the [`min`, `max`] range
-validate_slider_value <- function(min, max, value, fun) {
-  if (length(min)   != 1 || is_na(min) ||
-      length(max)   != 1 || is_na(max) ||
-      length(value) <  1 || length(value) > 2 || any(is.na(value)))
-  {
-    stop(call. = FALSE,
-      sprintf("In %s(): `min`, `max`, and `value` cannot be NULL, NA, or empty.", fun)
-    )
-  }
-
-  if (min(value) < min) {
-    warning(call. = FALSE,
-      sprintf(
-        "In %s(): `value` should be greater than or equal to `min` (value = %s, min = %s).",
-        fun, paste(value, collapse = ", "), min
-      )
-    )
-  }
-
-  if (max(value) > max) {
-    warning(
-      noBreaks. = TRUE, call. = FALSE,
-      sprintf(
-        "In %s(): `value` should be less than or equal to `max` (value = %s, max = %s).",
-        fun, paste(value, collapse = ", "), max
-      )
-    )
-  }
-}
-
 
 #' @rdname sliderInput
 #'

R/input-submit.R

@@ -10,7 +10,7 @@
 #' [actionButton()] instead of `submitButton` when you
 #' want to delay a reaction.
 #' See [this
-#' article](https://shiny.rstudio.com/articles/action-buttons.html) for more information (including a demo of how to "translate"
+#' article](http://shiny.rstudio.com/articles/action-buttons.html) for more information (including a demo of how to "translate"
 #' code using a `submitButton` to code using an `actionButton`).
 #'
 #' In essence, the presence of a submit button stops all inputs from
@@ -57,8 +57,8 @@ submitButton <- function(text = "Apply Changes", icon = NULL, width = NULL) {
   div(
     tags$button(
       type="submit",
-      class="btn btn-primary shiny-submit-button",
-      style = css(width = validateCssUnit(width)),
+      class="btn btn-primary",
+      style = if (!is.null(width)) paste0("width: ", validateCssUnit(width), ";"),
       list(icon, text)
     )
   )

R/input-text.R

@@ -10,14 +10,6 @@
 #' @param placeholder A character string giving the user a hint as to what can
 #'   be entered into the control. Internet Explorer 8 and 9 do not support this
 #'   option.
-#' @param ... Ignored, included to require named arguments and for future
-#'   feature expansion.
-#' @param updateOn A character vector specifying when the input should be
-#'   updated. Options are `"change"` (default) and `"blur"`. Use `"change"` to
-#'   update the input immediately whenever the value changes. Use `"blur"`to
-#'   delay the input update until the input loses focus (the user moves away
-#'   from the input), or when Enter is pressed (or Cmd/Ctrl + Enter for
-#'   [textAreaInput()]).
 #' @return A text input control that can be added to a UI definition.
 #'
 #' @family input elements
@@ -42,31 +34,15 @@
 #' unless `value` is provided.
 #'
 #' @export
-textInput <- function(
-  inputId,
-  label,
-  value = "",
-  width = NULL,
-  placeholder = NULL,
-  ...,
-  updateOn = c("change", "blur")
-) {
-  rlang::check_dots_empty()
-  updateOn <- rlang::arg_match(updateOn)
+textInput <- function(inputId, label, value = "", width = NULL,
+  placeholder = NULL) {
 
   value <- restoreInput(id = inputId, default = value)
 
-  div(
-    class = "form-group shiny-input-container",
-    style = css(width = validateCssUnit(width)),
+  div(class = "form-group shiny-input-container",
+    style = if (!is.null(width)) paste0("width: ", validateCssUnit(width), ";"),
     shinyInputLabel(inputId, label),
-    tags$input(
-      id = inputId,
-      type = "text",
-      class = "shiny-input-text form-control",
-      value = value,
-      placeholder = placeholder,
-      `data-update-on` = updateOn
-    )
+    tags$input(id = inputId, type="text", class="form-control", value=value,
+      placeholder = placeholder)
   )
 }

R/input-textarea.R

@@ -16,8 +16,6 @@
 #' @param resize Which directions the textarea box can be resized. Can be one of
 #'   `"both"`, `"none"`, `"vertical"`, and `"horizontal"`. The default, `NULL`,
 #'   will use the client browser's default setting for resizing textareas.
-#' @param autoresize If `TRUE`, the textarea will automatically resize to fit
-#'   the input text.
 #' @return A textarea input control that can be added to a UI definition.
 #'
 #' @family input elements
@@ -43,22 +41,8 @@
 #' unless `value` is provided.
 #'
 #' @export
-textAreaInput <- function(
-  inputId,
-  label,
-  value = "",
-  width = NULL,
-  height = NULL,
-  cols = NULL,
-  rows = NULL,
-  placeholder = NULL,
-  resize = NULL,
-  ...,
-  autoresize = FALSE,
-  updateOn = c("change", "blur")
-) {
-  rlang::check_dots_empty()
-  updateOn <- rlang::arg_match(updateOn)
+textAreaInput <- function(inputId, label, value = "", width = NULL, height = NULL,
+  cols = NULL, rows = NULL, placeholder = NULL, resize = NULL) {
 
   value <- restoreInput(id = inputId, default = value)
 
@@ -66,30 +50,27 @@ textAreaInput <- function(
     resize <- match.arg(resize, c("both", "none", "vertical", "horizontal"))
   }
 
-  classes <- "form-control"
-  if (autoresize) {
-    classes <- c(classes, "textarea-autoresize")
-    if (is.null(rows)) {
-      rows <- 1
-    }
-  }
+  style <- paste(
+    # 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, ";")
+  )
 
-  div(
-    class = "shiny-input-textarea form-group shiny-input-container",
-    style = css(width = validateCssUnit(width)),
+  # Workaround for tag attribute=character(0) bug:
+  #   https://github.com/rstudio/htmltools/issues/65
+  if (length(style) == 0) style <- NULL
+
+  div(class = "form-group shiny-input-container",
     shinyInputLabel(inputId, label),
+    style = if (!is.null(width)) paste0("width: ", validateCssUnit(width), ";"),
     tags$textarea(
       id = inputId,
-      class = classes,
+      class = "form-control",
       placeholder = placeholder,
-      style = css(
-        width = if (!is.null(width)) "100%",
-        height = validateCssUnit(height),
-        resize = resize
-      ),
+      style = style,
       rows = rows,
       cols = cols,
-      `data-update-on` = updateOn,
       value
     )
   )

R/input-utils.R

@@ -41,7 +41,7 @@ normalizeChoicesArgs <- function(choices, choiceNames, choiceValues,
     if (length(choiceNames) != length(choiceValues)) {
       stop("`choiceNames` and `choiceValues` must have the same length.")
     }
-    if (any_named(choiceNames) || any_named(choiceValues)) {
+    if (anyNamed(choiceNames) || anyNamed(choiceValues)) {
       stop("`choiceNames` and `choiceValues` must not be named.")
     }
   } else {

R/insert-tab.R

@@ -112,13 +112,35 @@
 #'
 #' }
 #' @export
-insertTab <- function(inputId, tab, target = NULL,
-                      position = c("after", "before"), select = FALSE,
+insertTab <- function(inputId, tab, target,
+                      position = c("before", "after"), select = FALSE,
                       session = getDefaultReactiveDomain()) {
-  bslib::nav_insert(
-    inputId, tab, target,
-    match.arg(position), select, session
-  )
+  force(target)
+  force(select)
+  position <- match.arg(position)
+  inputId <- session$ns(inputId)
+
+  # Barbara -- August 2017
+  # Note: until now, the number of tabs in a tabsetPanel (or navbarPage
+  # or navlistPanel) was always fixed. So, an easy way to give an id to
+  # a tab was simply incrementing a counter. (Just like it was easy to
+  # give a random 4-digit number to identify the tabsetPanel). Since we
+  # can only know this in the client side, we'll just pass `id` and
+  # `tsid` (TabSetID) as dummy values that will be fixed in the JS code.
+  item <- buildTabItem("id", "tsid", TRUE, divTag = tab,
+    textFilter = if (is.character(tab)) navbarMenuTextFilter else NULL)
+
+  callback <- function() {
+    session$sendInsertTab(
+      inputId = inputId,
+      liTag = processDeps(item$liTag, session),
+      divTag = processDeps(item$divTag, session),
+      menuName = NULL,
+      target = target,
+      position = position,
+      select = select)
+  }
+  session$onFlush(callback, once = TRUE)
 }
 
 #' @param menuName This argument should only be used when you want to
@@ -137,21 +159,63 @@ insertTab <- function(inputId, tab, target = NULL,
 #' @export
 prependTab <- function(inputId, tab, select = FALSE, menuName = NULL,
                        session = getDefaultReactiveDomain()) {
-  bslib::nav_prepend(inputId, tab, menu_title = menuName, select = select, session = session)
+  force(select)
+  force(menuName)
+  inputId <- session$ns(inputId)
+
+  item <- buildTabItem("id", "tsid", TRUE, divTag = tab,
+    textFilter = if (is.character(tab)) navbarMenuTextFilter else NULL)
+
+  callback <- function() {
+    session$sendInsertTab(
+      inputId = inputId,
+      liTag = processDeps(item$liTag, session),
+      divTag = processDeps(item$divTag, session),
+      menuName = menuName,
+      target = NULL,
+      position = "after",
+      select = select)
+  }
+  session$onFlush(callback, once = TRUE)
 }
 
 #' @rdname insertTab
 #' @export
 appendTab <- function(inputId, tab, select = FALSE, menuName = NULL,
                       session = getDefaultReactiveDomain()) {
-  bslib::nav_append(inputId, tab, menu_title = menuName, select = select, session = session)
+  force(select)
+  force(menuName)
+  inputId <- session$ns(inputId)
+
+  item <- buildTabItem("id", "tsid", TRUE, divTag = tab,
+    textFilter = if (is.character(tab)) navbarMenuTextFilter else NULL)
+
+  callback <- function() {
+    session$sendInsertTab(
+      inputId = inputId,
+      liTag = processDeps(item$liTag, session),
+      divTag = processDeps(item$divTag, session),
+      menuName = menuName,
+      target = NULL,
+      position = "before",
+      select = select)
+  }
+  session$onFlush(callback, once = TRUE)
 }
 
 #' @rdname insertTab
 #' @export
 removeTab <- function(inputId, target,
                       session = getDefaultReactiveDomain()) {
-  bslib::nav_remove(inputId, target, session)
+  force(target)
+  inputId <- session$ns(inputId)
+
+  callback <- function() {
+    session$sendRemoveTab(
+      inputId = inputId,
+      target = target)
+  }
+  session$onFlush(callback, once = TRUE)
 }
 
 

R/insert-ui.R

@@ -1,6 +1,6 @@
 #' Insert and remove UI objects
 #'
-#' These functions allow you to dynamically add and remove arbitrary UI
+#' These functions allow you to dynamically add and remove arbirary UI
 #' into your app, whenever you want, as many times as you want.
 #' Unlike [renderUI()], the UI generated with `insertUI()` is persistent:
 #' once it's created, it stays there until removed by `removeUI()`. Each
@@ -11,7 +11,7 @@
 #' function.
 #'
 #' It's particularly useful to pair `removeUI` with `insertUI()`, but there is
-#' no restriction on what you can use it on. Any element that can be selected
+#' no restriction on what you can use on. Any element that can be selected
 #' through a jQuery selector can be removed through this function.
 #'
 #' @param selector A string that is accepted by jQuery's selector

R/jqueryui.R

@@ -76,20 +76,16 @@ absolutePanel <- function(...,
 
   style <- paste(paste(names(cssProps), cssProps, sep = ':', collapse = ';'), ';', sep='')
   divTag <- tags$div(style=style, ...)
-
-  if (identical(draggable, FALSE)) {
+  if (isTRUE(draggable)) {
+    divTag <- tagAppendAttributes(divTag, class='draggable')
+    return(tagList(
+      singleton(tags$head(tags$script(src='shared/jqueryui/jquery-ui.min.js'))),
+      divTag,
+      tags$script('$(".draggable").draggable();')
+    ))
+  } else {
     return(divTag)
   }
-
-  # Add Shiny inputs and htmlwidgets to 'non-draggable' elements
-  # Cf. https://api.jqueryui.com/draggable/#option-cancel
-  dragOpts <- '{cancel: ".shiny-input-container,.html-widget,input,textarea,button,select,option"}'
-  dragJS <- sprintf('$(".draggable").draggable(%s);', dragOpts)
-  tagList(
-    tagAppendAttributes(divTag, class='draggable'),
-    jqueryuiDependency(),
-    tags$script(HTML(dragJS))
-  )
 }
 
 #' @rdname absolutePanel
@@ -103,14 +99,3 @@ fixedPanel <- function(...,
                 width=width, height=height, draggable=draggable, cursor=match.arg(cursor),
                 fixed=TRUE)
 }
-
-
-jqueryuiDependency <- function() {
-  htmlDependency(
-    "jqueryui",
-    version_jqueryui,
-    src = "www/shared/jqueryui",
-    package = "shiny",
-    script = "jquery-ui.min.js"
-  )
-}

R/knitr.R

@@ -4,7 +4,6 @@
 #' themselves in knitr/rmarkdown documents.
 #'
 #' @name knitr_methods
-#' @keywords internal
 #' @param x Object to knit_print
 #' @param ... Additional knit_print arguments
 NULL
@@ -63,7 +62,7 @@ knit_print.shiny.appobj <- function(x, ...) {
 #' @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), ..., 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())
@@ -77,5 +76,5 @@ knit_print.reactive <- function(x, ..., inline = FALSE) {
   renderFunc <- if (inline) renderText else renderPrint
   knitr::knit_print(renderFunc({
     x()
-  }), ..., inline = inline)
+  }), inline = inline)
 }

R/map.R

@@ -1,3 +1,4 @@
+#' @importFrom fastmap fastmap
 Map <- R6Class(
   'Map',
   portable = FALSE,
@@ -48,12 +49,9 @@ Map <- R6Class(
   )
 )
 
-#' @export
-as.list.Map <- function(x, ...) {
-  x$values()
+as.list.Map <- function(map) {
+  map$values()
 }
-
-#' @export
-length.Map <- function(x) {
-  x$size()
+length.Map <- function(map) {
+  map$size()
 }

R/middleware.R

@@ -348,7 +348,7 @@ HandlerManager <- R6Class("HandlerManager",
                   httpResponse(status = 500L,
                     content_type = "text/html; charset=UTF-8",
                     content = as.character(htmltools::htmlTemplate(
-                      system_file("template", "error.html", package = "shiny"),
+                      system.file("template", "error.html", package = "shiny"),
                       message = conditionMessage(err)
                     ))
                   )
@@ -426,7 +426,7 @@ HandlerManager <- R6Class("HandlerManager",
 )
 
 maybeInjectAutoreload <- function(resp) {
-  if (get_devmode_option("shiny.autoreload", FALSE) &&
+  if (getOption("shiny.autoreload", FALSE) &&
       isTRUE(grepl("^text/html($|;)", resp$content_type)) &&
       is.character(resp$content)) {
 

R/mock-session.R

@@ -1,5 +1,5 @@
 # Promise helpers taken from:
-#   https://github.com/rstudio/promises/blob/main/tests/testthat/common.R
+#   https://github.com/rstudio/promises/blob/master/tests/testthat/common.R
 # Block until all pending later tasks have executed
 wait_for_it <- function() {
   while (!later::loop_empty()) {
@@ -9,6 +9,8 @@ wait_for_it <- function() {
 
 # Block until the promise is resolved/rejected. If resolved, return the value.
 # If rejected, throw (yes throw, not return) the error.
+#' @importFrom promises %...!%
+#' @importFrom promises %...>%
 extract <- function(promise) {
   promise_value <- NULL
   error <- NULL
@@ -259,7 +261,7 @@ MockShinySession <- R6Class(
       private$file_generators <- fastmap()
 
       private$timer <- MockableTimerCallbacks$new()
-      self$progressStack <- fastmap::faststack()
+      self$progressStack <- Stack$new()
 
       self$userData <- new.env(parent=emptyenv())
 
@@ -369,29 +371,6 @@ MockShinySession <- R6Class(
       })
       private$flush()
     },
-    
-    #' @description Removes inputs from the `session$inputs` object and flushes
-    #'   the reactives.
-    #' @param inputIds Character vector of input ids to remove.
-    #' @examples
-    #' \dontrun{
-    #' session$setInputs(x=1, y=2)
-    #' session$removeInputs("x")
-    #' }
-    removeInputs = function(inputIds) {
-      is_clientdata <- grepl("^.clientdata_", inputIds)
-      if (any(is_clientdata)) {
-        abort(
-          "Cannot remove clientData inputs: ",
-          paste(inputIds[is_clientdata], collapse = ", ")
-        )
-      }
-      
-      for (inputId in inputIds) {
-        private$.input$remove(inputId)
-      }
-      private$flush()
-    },
 
     #' @description An internal method which shouldn't be used by others.
     #'   Schedules `callback` for execution after some number of `millis`
@@ -480,11 +459,6 @@ MockShinySession <- R6Class(
           function(v){
             list(val = v, err = NULL)
           }, catch=function(e){
-            if (
-              !inherits(e, c("shiny.custom.error", "shiny.output.cancel", "shiny.output.progress", "shiny.silent.error"))
-            ) {
-              self$unhandledError(e, close = FALSE)
-            }
             list(val = NULL, err = e)
           })
       })
@@ -588,26 +562,10 @@ MockShinySession <- R6Class(
     rootScope = function() {
       self
     },
-    #' @description Add an unhandled error callback.
-    #' @param callback The callback to add, which should accept an error object
-    #'   as its first argument.
-    #' @return A deregistration function.
-    onUnhandledError = function(callback) {
-      private$unhandledErrorCallbacks$register(callback)
-    },
     #' @description Called by observers when a reactive expression errors.
     #' @param e An error object.
-    #' @param close If `TRUE`, the session will be closed after the error is
-    #'  handled, defaults to `FALSE`.
-    unhandledError = function(e, close = TRUE) {
-      if (close) {
-        class(e) <- c("shiny.error.fatal", class(e))
-      }
-
-      private$unhandledErrorCallbacks$invoke(e, onError = printError)
-      .globals$onUnhandledErrorCallbacks$invoke(e, onError = printError)
-
-      if (close) self$close()
+    unhandledError = function(e) {
+      self$close()
     },
     #' @description Freeze a value until the flush cycle completes.
     #' @param x A `ReactiveValues` object.
@@ -664,9 +622,6 @@ MockShinySession <- R6Class(
     flushedCBs = NULL,
     # @field endedCBs `Callbacks` called when session ends.
     endedCBs = NULL,
-    # @field unhandledErrorCallbacks `Callbacks` called when an unhandled error
-    #   occurs.
-    unhandledErrorCallbacks = Callbacks$new(),
     # @field timer `MockableTimerCallbacks` called at particular times.
     timer = NULL,
     # @field was_closed Set to `TRUE` once the session is closed.

R/modal.R

@@ -43,10 +43,7 @@ removeModal <- function(session = getDefaultReactiveDomain()) {
 #' @param title An optional title for the dialog.
 #' @param footer UI for footer. Use `NULL` for no footer.
 #' @param size One of `"s"` for small, `"m"` (the default) for medium,
-#'   `"l"` for large, or `"xl"` for extra large. Note that `"xl"` only 
-#'    works with Bootstrap 4 and above (to opt-in to Bootstrap 4+, 
-#'    pass [bslib::bs_theme()] to the `theme` argument of a page container 
-#'    like [fluidPage()]).
+#'   or `"l"` for large.
 #' @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
@@ -154,25 +151,18 @@ removeModal <- function(session = getDefaultReactiveDomain()) {
 #' }
 #' @export
 modalDialog <- function(..., title = NULL, footer = modalButton("Dismiss"),
-  size = c("m", "s", "l", "xl"), easyClose = FALSE, fade = TRUE) {
+  size = c("m", "s", "l"), easyClose = FALSE, fade = TRUE) {
 
   size <- match.arg(size)
 
-  backdrop <- if (!easyClose) "static"
-  keyboard <- if (!easyClose) "false"
-  div(
-    id = "shiny-modal",
-    class = "modal",
-    class = if (fade) "fade",
-    tabindex = "-1",
-    `data-backdrop` = backdrop,
-    `data-bs-backdrop` = backdrop,
-    `data-keyboard` = keyboard,
-    `data-bs-keyboard` = keyboard,
+  cls <- if (fade) "modal fade" else "modal"
+  div(id = "shiny-modal", class = cls, tabindex = "-1",
+    `data-backdrop` = if (!easyClose) "static",
+    `data-keyboard` = if (!easyClose) "false",
 
     div(
       class = "modal-dialog",
-      class = switch(size, s = "modal-sm", m = NULL, l = "modal-lg", xl = "modal-xl"),
+      class = switch(size, s = "modal-sm", m = NULL, l = "modal-lg"),
       div(class = "modal-content",
         if (!is.null(title)) div(class = "modal-header",
           tags$h4(class = "modal-title", title)
@@ -181,26 +171,14 @@ modalDialog <- function(..., title = NULL, footer = modalButton("Dismiss"),
         if (!is.null(footer)) div(class = "modal-footer", footer)
       )
     ),
-    # jQuery plugin doesn't work in Bootstrap 5, but vanilla JS doesn't work in Bootstrap 4 :sob:
-    tags$script(HTML(
-      "if (window.bootstrap && !window.bootstrap.Modal.VERSION.match(/^4\\./)) {
-         var modal = new bootstrap.Modal(document.getElementById('shiny-modal'));
-         modal.show();
-      } else {
-         $('#shiny-modal').modal().focus();
-      }"
-    ))
+    tags$script("$('#shiny-modal').modal().focus();")
   )
 }
 
 #' @export
 #' @rdname modalDialog
 modalButton <- function(label, icon = NULL) {
-  tags$button(
-    type = "button",
-    class = "btn btn-default",
-    `data-dismiss` = "modal",
-    `data-bs-dismiss` = "modal",
-    validateIcon(icon), label
+  tags$button(type = "button", class = "btn btn-default",
+    `data-dismiss` = "modal", validateIcon(icon), label
   )
 }

R/modules.R

@@ -66,7 +66,7 @@ find_ancestor_session <- function(x, depth = 20) {
 #' Shiny's module feature lets you break complicated UI and server logic into
 #' smaller, self-contained pieces. Compared to large monolithic Shiny apps,
 #' modules are easier to reuse and easier to reason about. See the article at
-#' <https://shiny.rstudio.com/articles/modules.html> to learn more.
+#' <http://shiny.rstudio.com/articles/modules.html> to learn more.
 #'
 #' Starting in Shiny 1.5.0, we recommend using `moduleServer` instead of
 #' [`callModule()`], because the syntax is a little easier
@@ -80,7 +80,7 @@ find_ancestor_session <- function(x, depth = 20) {
 #'   almost always be used).
 #'
 #' @return The return value, if any, from executing the module server function
-#' @seealso <https://shiny.rstudio.com/articles/modules.html>
+#' @seealso <http://shiny.rstudio.com/articles/modules.html>
 #'
 #' @examples
 #' # Define the UI for a module

R/progress.R

@@ -76,10 +76,8 @@ Progress <- R6Class(
       min = 0, max = 1,
       style = getShinyOption("progress.style", default = "notification"))
     {
-      if (is.null(session))
-        rlang::abort("Can only use Progress$new() inside a Shiny app")
       if (is.null(session$progressStack))
-        rlang::abort("`session` is not a ShinySession object.")
+        stop("'session' is not a ShinySession object.")
 
       private$session <- session
       private$id <- createUniqueId(8)

R/react.R

@@ -5,7 +5,7 @@ processId <- local({
   cached <- NULL
   function() {
     if (is.null(cached)) {
-      cached <<- rlang::hash(list(
+      cached <<- digest::digest(list(
         Sys.info(),
         Sys.time()
       ))
@@ -53,12 +53,10 @@ Context <- R6Class(
 
       promises::with_promise_domain(reactivePromiseDomain(), {
         withReactiveDomain(.domain, {
-          captureStackTraces({
-            env <- .getReactiveEnvironment()
-            rLog$enter(.reactId, id, .reactType, .domain)
-            on.exit(rLog$exit(.reactId, id, .reactType, .domain), add = TRUE)
-            env$runWith(self, func)
-          })
+          env <- .getReactiveEnvironment()
+          rLog$enter(.reactId, id, .reactType, .domain)
+          on.exit(rLog$exit(.reactId, id, .reactType, .domain), add = TRUE)
+          env$runWith(self, func)
         })
       })
     },
@@ -67,7 +65,7 @@ Context <- R6Class(
         that have been registered with onInvalidate()."
 
       if (!identical(.pid, processId())) {
-        rlang::abort("Reactive context was created in one process and invalidated from another.")
+        stop("Reactive context was created in one process and invalidated from another")
       }
 
       if (.invalidated)
@@ -89,7 +87,7 @@ Context <- R6Class(
         immediately."
 
       if (!identical(.pid, processId())) {
-        rlang::abort("Reactive context was created in one process and accessed from another.")
+        stop("Reactive context was created in one process and accessed from another")
       }
 
       if (.invalidated)
@@ -142,13 +140,9 @@ ReactiveEnvironment <- R6Class(
         if (isTRUE(getOption('shiny.suppressMissingContextError'))) {
           return(getDummyContext())
         } else {
-          rlang::abort(c(
-            'Operation not allowed without an active reactive context.',
-            paste0(
-              'You tried to do something that can only be done from inside a ',
-              'reactive consumer.'
-            )
-          ))
+          stop('Operation not allowed without an active reactive context. ',
+               '(You tried to do something that can only be done from inside a ',
+               'reactive expression or observer.)')
         }
       }
       return(.currentContext)
@@ -208,8 +202,7 @@ getCurrentContext <- function() {
   .getReactiveEnvironment()$currentContext()
 }
 hasCurrentContext <- function() {
-  !is.null(.getReactiveEnvironment()$.currentContext) ||
-    isTRUE(getOption("shiny.suppressMissingContextError"))
+  !is.null(.getReactiveEnvironment()$.currentContext)
 }
 
 getDummyContext <- function() {
@@ -221,11 +214,13 @@ getDummyContext <- function() {
 
 wrapForContext <- function(func, ctx) {
   force(func)
-  force(ctx) # may be NULL (in the case of maskReactiveContext())
+  force(ctx)
 
   function(...) {
-    .getReactiveEnvironment()$runWith(ctx, function() {
-      func(...)
+    ctx$run(function() {
+      captureStackTraces(
+        func(...)
+      )
     })
   }
 }
@@ -234,18 +229,12 @@ reactivePromiseDomain <- function() {
   promises::new_promise_domain(
     wrapOnFulfilled = function(onFulfilled) {
       force(onFulfilled)
-
-      # ctx will be NULL if we're in a maskReactiveContext()
-      ctx <- if (hasCurrentContext()) getCurrentContext() else NULL
-
+      ctx <- getCurrentContext()
       wrapForContext(onFulfilled, ctx)
     },
     wrapOnRejected = function(onRejected) {
       force(onRejected)
-
-      # ctx will be NULL if we're in a maskReactiveContext()
-      ctx <- if (hasCurrentContext()) getCurrentContext() else NULL
-
+      ctx <- getCurrentContext()
       wrapForContext(onRejected, ctx)
     }
   )

R/reactives.R

@@ -105,7 +105,9 @@ ReactiveVal <- R6Class(
       invisible(TRUE)
     },
     freeze = function(session = getDefaultReactiveDomain()) {
-      checkReactiveDomain(session)
+      if (is.null(session)) {
+        stop("Can't freeze a reactiveVal without a reactive domain")
+      }
       rLog$freezeReactiveVal(private$reactId, session)
       session$onFlushed(function() {
         self$thaw(session)
@@ -236,23 +238,17 @@ freezeReactiveVal <- function(x) {
   }
 
   domain <- getDefaultReactiveDomain()
-  checkReactiveDomain(domain)
-
+  if (is.null(domain)) {
+    stop("freezeReactiveVal() must be called when a default reactive domain is active.")
+  }
   if (!inherits(x, "reactiveVal")) {
-    rlang::abort("`x` must be a reactiveVal.")
+    stop("x must be a reactiveVal object")
   }
 
   attr(x, ".impl", exact = TRUE)$freeze(domain)
   invisible()
 }
 
-checkReactiveDomain <- function(x) {
-  if (is.null(x)) {
-    rlang::abort("Can't freeze reactive values without a reactive domain.")
-  }
-}
-
-
 #' @export
 format.reactiveVal <- function(x, ...) {
   attr(x, ".impl", exact = TRUE)$format(...)
@@ -326,9 +322,6 @@ ReactiveValues <- R6Class(
     .dedupe = logical(0),
     # Key, asList(), or names() have been retrieved
     .hasRetrieved = list(),
-    # All names, in insertion order. The names are also stored in the .values
-    # object, but it does not preserve order.
-    .nameOrder = character(0),
 
 
     initialize = function(
@@ -398,17 +391,14 @@ ReactiveValues <- R6Class(
       # invalidate all deps of `key`
 
       domain <- getDefaultReactiveDomain()
+      hidden <- substr(key, 1, 1) == "."
+
       key_exists <- .values$containsKey(key)
 
       if (key_exists && !isTRUE(force) && .dedupe && identical(.values$get(key), value)) {
         return(invisible())
       }
 
-      # If it's new, append key to the name order
-      if (!key_exists) {
-        .nameOrder[length(.nameOrder) + 1] <<- key
-      }
-
       # set the value for better logging
       .values$set(key, value)
 
@@ -418,15 +408,26 @@ ReactiveValues <- R6Class(
         .dependents$get(key)$invalidate()
       }
 
-      # invalidate names() or toList() if needed
-      if (!key_exists) {
-        private$invalidateNames(domain)
+      # only invalidate if there are deps
+      if (!key_exists && isTRUE(.hasRetrieved$names)) {
+        rLog$valueChangeNames(.reactId, .values$keys(), domain)
+        .namesDeps$invalidate()
       }
 
-      private$invalidateAsListAny(
-        all.names = substr(key, 1, 1) == ".",
-        domain = domain
-      )
+      if (hidden) {
+        if (isTRUE(.hasRetrieved$asListAll)) {
+          rLog$valueChangeAsListAll(.reactId, .values$values(), domain)
+          .allValuesDeps$invalidate()
+        }
+      } else {
+        if (isTRUE(.hasRetrieved$asList)) {
+          react_vals <- .values$values()
+          react_vals <- react_vals[!grepl("^\\.", base::names(react_vals))]
+          # leave as is. both object would be registered to the listening object
+          rLog$valueChangeAsList(.reactId, react_vals, domain)
+          .valuesDeps$invalidate()
+        }
+      }
 
       invisible()
     },
@@ -438,29 +439,15 @@ ReactiveValues <- R6Class(
              })
     },
 
-    remove = function(key) {
-      stopifnot(rlang::is_string(key))
-
-      if (!self$.values$containsKey(key)) {
-        return(invisible())
-      }
-
-      value <- self$.values$get(key)
-      self$.values$remove(key)
-      self$.nameOrder <- setdiff(self$.nameOrder, key)
-      private$invalidateNames()
-      private$invalidateAsListAny(all.names = substr(key, 1, 1) == ".")
-      invisible(value)
-    },
-
     names = function() {
+      nameValues <- .values$keys()
       if (!isTRUE(.hasRetrieved$names)) {
         domain <- getDefaultReactiveDomain()
-        rLog$defineNames(.reactId, .nameOrder, .label, domain)
+        rLog$defineNames(.reactId, nameValues, .label, domain)
         .hasRetrieved$names <<- TRUE
       }
       .namesDeps$register()
-      return(.nameOrder)
+      return(nameValues)
     },
 
     # Get a metadata value. Does not trigger reactivity.
@@ -508,7 +495,7 @@ ReactiveValues <- R6Class(
     },
 
     toList = function(all.names=FALSE) {
-      listValue <- .values$mget(.nameOrder)
+      listValue <- .values$values()
       if (!all.names) {
         listValue <- listValue[!grepl("^\\.", base::names(listValue))]
       }
@@ -531,47 +518,7 @@ ReactiveValues <- R6Class(
 
       return(listValue)
     }
-  ),
-  private = list(
-    invalidateNames = function(domain = getDefaultReactiveDomain()) {
-      if (!isTRUE(self$.hasRetrieved$names)) {
-        return(invisible())
-      }
-      rLog$valueChangeNames(self$.reactId, self$.values$keys(), domain)
-      self$.namesDeps$invalidate()
-    },
 
-    invalidateAsListAny = function(
-      all.names,
-      domain = getDefaultReactiveDomain()
-    ) {
-      if (isTRUE(all.names)) {
-        private$invalidateAsListAll(domain)
-      } else {
-        private$invalidateAsList(domain)
-      }
-    },
-
-    invalidateAsListAll = function(domain = getDefaultReactiveDomain()) {
-      if (!isTRUE(self$.hasRetrieved$asListAll)) {
-        return(invisible())
-      }
-
-      rLog$valueChangeAsListAll(self$.reactId, self$.values$values(), domain)
-      self$.allValuesDeps$invalidate()
-    },
-
-    invalidateAsList = function(domain = getDefaultReactiveDomain()) {
-      if (!isTRUE(self$.hasRetrieved$asList)) {
-        return(invisible())
-      }
-
-      react_vals <- self$.values$values()
-      react_vals <- react_vals[!grepl("^\\.", base::names(react_vals))]
-      # leave as is. both object would be registered to the listening object
-      rLog$valueChangeAsList(self$.reactId, react_vals, domain)
-      self$.valuesDeps$invalidate()
-    }
   )
 )
 
@@ -617,9 +564,9 @@ ReactiveValues <- R6Class(
 #' @seealso [isolate()] and [is.reactivevalues()].
 #' @export
 reactiveValues <- function(...) {
-  args <- list2(...)
+  args <- list(...)
   if ((length(args) > 0) && (is.null(names(args)) || any(names(args) == "")))
-    rlang::abort("All arguments passed to reactiveValues() must be named.")
+    stop("All arguments passed to reactiveValues() must be named.")
 
   values <- .createReactiveValues(ReactiveValues$new())
 
@@ -630,7 +577,7 @@ reactiveValues <- function(...) {
 
 checkName <- function(x) {
   if (!is.character(x) || length(x) != 1) {
-    rlang::abort("Must use single string to index into reactivevalues.")
+    stop("Must use single string to index into reactivevalues")
   }
 }
 
@@ -641,15 +588,14 @@ checkName <- function(x) {
 # @param ns A namespace function (either `identity` or `NS(namespace)`)
 .createReactiveValues <- function(values = NULL, readonly = FALSE,
   ns = identity) {
-  
+
   structure(
     list(
       impl = values,
       readonly = readonly,
       ns = ns
     ),
-    class='reactivevalues',
-    remove = function(key) values$remove(key)
+    class='reactivevalues'
   )
 }
 
@@ -673,14 +619,6 @@ is.reactivevalues <- function(x) inherits(x, 'reactivevalues')
 #' @export
 `$.reactivevalues` <- function(x, name) {
   checkName(name)
-
-  if (!hasCurrentContext()) {
-    rlang::abort(c(
-      paste0("Can't access reactive value '", name, "' outside of reactive consumer."),
-      i = "Do you need to wrap inside reactive() or observe()?"
-    ))
-  }
-
   .subset2(x, 'impl')$get(.subset2(x, 'ns')(name))
 }
 
@@ -690,7 +628,7 @@ is.reactivevalues <- function(x) inherits(x, 'reactivevalues')
 #' @export
 `$<-.reactivevalues` <- function(x, name, value) {
   if (.subset2(x, 'readonly')) {
-    rlang::abort(paste0("Can't modify read-only reactive value '", name, "'"))
+    stop("Attempted to assign value to a read-only reactivevalues object")
   }
   checkName(name)
   .subset2(x, 'impl')$set(.subset2(x, 'ns')(name), value)
@@ -702,12 +640,12 @@ is.reactivevalues <- function(x) inherits(x, 'reactivevalues')
 
 #' @export
 `[.reactivevalues` <- function(values, name) {
-  rlang::abort("Can't index reactivevalues with `[`.")
+  stop("Single-bracket indexing of reactivevalues object is not allowed.")
 }
 
 #' @export
 `[<-.reactivevalues` <- function(values, name, value) {
-  rlang::abort("Can't index reactivevalues with `[`.")
+  stop("Single-bracket indexing of reactivevalues object is not allowed.")
 }
 
 #' @export
@@ -723,15 +661,16 @@ names.reactivevalues <- function(x) {
 
 #' @export
 `names<-.reactivevalues` <- function(x, value) {
-  rlang::abort("Can't assign names to reactivevalues.")
+  stop("Can't assign names to reactivevalues object")
 }
 
 #' @export
 as.list.reactivevalues <- function(x, all.names=FALSE, ...) {
-  shinyDeprecated(
-    "0.4.0", "as.list.reactivevalues()", "reactiveValuesToList()",
-    details = "Please see ?reactiveValuesToList for more information."
-  )
+  shinyDeprecated("reactiveValuesToList",
+    msg = paste("'as.list.reactivevalues' is deprecated. ",
+      "Use reactiveValuesToList instead.",
+      "\nPlease see ?reactiveValuesToList for more information.",
+      sep = ""))
 
   reactiveValuesToList(x, all.names)
 }
@@ -846,7 +785,9 @@ str.reactivevalues <- function(object, indent.str = " ", ...) {
 #' @export
 freezeReactiveValue <- function(x, name) {
   domain <- getDefaultReactiveDomain()
-  checkReactiveDomain(domain)
+  if (is.null(domain)) {
+    stop("freezeReactiveValue() must be called when a default reactive domain is active.")
+  }
 
   domain$freezeValue(x, name)
   invisible()
@@ -878,10 +819,9 @@ Observable <- R6Class(
                           domain = getDefaultReactiveDomain(),
                           ..stacktraceon = TRUE) {
       if (length(formals(func)) > 0)
-        rlang::abort(c(
-          "Can't make a reactive expression from a function that takes arguments.",
-          "Only functions without parameters can become reactive expressions."
-        ))
+        stop("Can't make a reactive expression from a function that takes one ",
+             "or more parameters; only functions without parameters can be ",
+             "reactive.")
 
       # This is to make sure that the function labels that show in the profiler
       # and in stack traces doesn't contain whitespace. See
@@ -925,7 +865,8 @@ Observable <- R6Class(
         invisible(.value)
     },
     format = function() {
-      simpleExprToFunction(fn_body(.origFunc), "reactive")
+      label <- sprintf('reactive(%s)', paste(deparse(body(.origFunc)), collapse='\n'))
+      strsplit(label, "\n")[[1]]
     },
     .updateValue = function() {
       ctx <- Context$new(.domain, .label, type = 'observable',
@@ -994,18 +935,14 @@ Observable <- R6Class(
 #' See the [Shiny tutorial](https://shiny.rstudio.com/tutorial/) for
 #' more information about reactive expressions.
 #'
-#' @param x For `is.reactive()`, an object to test. For `reactive()`, an
-#'   expression. When passing in a [`rlang::quo()`]sure with `reactive()`,
-#'   remember to use [`rlang::inject()`] to distinguish that you are passing in
-#'   the content of your quosure, not the expression of the quosure.
-#' @template param-env
-#' @templateVar x x
-#' @templateVar env env
-#' @templateVar quoted quoted
-#' @template param-quoted
-#' @templateVar x x
-#' @templateVar quoted quoted
-
+#' @param x For `reactive`, an expression (quoted or unquoted). For
+#'   `is.reactive`, an object to test.
+#' @param env The parent environment for the reactive expression. By default,
+#'   this is the calling environment, the same as when defining an ordinary
+#'   non-reactive expression.
+#' @param quoted Is the expression quoted? By default, this is `FALSE`.
+#'   This is useful when you want to use an expression that is stored in a
+#'   variable; to do so, it must be quoted with `quote()`.
 #' @param label A label for the reactive expression, useful for debugging.
 #' @param domain See [domains].
 #' @param ..stacktraceon Advanced use only. For stack manipulation purposes; see
@@ -1014,56 +951,46 @@ Observable <- R6Class(
 #' @return a function, wrapped in a S3 class "reactive"
 #'
 #' @examples
-#' library(rlang)
 #' values <- reactiveValues(A=1)
 #'
 #' reactiveB <- reactive({
 #'   values$A + 1
 #' })
-#' # View the values from the R console with isolate()
-#' isolate(reactiveB())
-#' # 2
+#'
+#' # Can use quoted expressions
+#' reactiveC <- reactive(quote({ values$A + 2 }), quoted = TRUE)
 #'
 #' # To store expressions for later conversion to reactive, use quote()
-#' myquo <- rlang::quo(values$A + 2)
-#' # Unexpected value! Sending a quosure directly will not work as expected.
-#' reactiveC <- reactive(myquo)
-#' # We'd hope for `3`, but instead we get the quosure that was supplied.
+#' expr_q <- quote({ values$A + 3 })
+#' reactiveD <- reactive(expr_q, quoted = TRUE)
+#'
+#' # View the values from the R console with isolate()
+#' isolate(reactiveB())
 #' isolate(reactiveC())
-#'
-#' # Instead, the quosure should be `rlang::inject()`ed
-#' reactiveD <- rlang::inject(reactive(!!myquo))
 #' isolate(reactiveD())
-#' # 3
-#'
-#' # (Legacy) Can use quoted expressions
-#' expr <- quote({ values$A + 3 })
-#' reactiveE <- reactive(expr, quoted = TRUE)
-#' isolate(reactiveE())
-#' # 4
-#'
 #' @export
-reactive <- function(
-  x,
-  env = parent.frame(),
-  quoted = FALSE,
+reactive <- function(x, env = parent.frame(), quoted = FALSE,
   ...,
   label = NULL,
   domain = getDefaultReactiveDomain(),
-  ..stacktraceon = TRUE
-) {
+  ..stacktraceon = TRUE)
+{
   check_dots_empty()
 
-  func <- installExprFunction(x, "func", env, quoted, wrappedWithLabel = FALSE)
-  # Attach a label and a reference to the original user source for debugging
-  userExpr <- fn_body(func)
-  label <- exprToLabel(userExpr, "reactive", label)
+  x <- get_quosure(x, env, quoted)
+  fun <- as_function(x)
+  # as_function returns a function that takes `...`. We need one that takes no
+  # args.
+  formals(fun) <- list()
 
-  o <- Observable$new(func, label, domain, ..stacktraceon = ..stacktraceon)
+  # Attach a label and a reference to the original user source for debugging
+  label <- exprToLabel(get_expr(x), "reactive", label)
+
+  o <- Observable$new(fun, label, domain, ..stacktraceon = ..stacktraceon)
   structure(
     o$getValue,
     observable = o,
-    cacheHint = list(userExpr = zap_srcref(userExpr)),
+    cacheHint = list(userExpr = zap_srcref(get_expr(x))),
     class = c("reactiveExpr", "reactive", "function")
   )
 }
@@ -1134,7 +1061,7 @@ execCount <- function(x) {
   else if (inherits(x, 'Observer'))
     return(x$.execCount)
   else
-    rlang::abort("Unexpected argument to execCount().")
+    stop('Unexpected argument to execCount')
 }
 
 # Internal utility functions for extracting things out of reactives.
@@ -1174,10 +1101,8 @@ Observer <- R6Class(
                           domain = getDefaultReactiveDomain(),
                           autoDestroy = TRUE, ..stacktraceon = TRUE) {
       if (length(formals(observerFunc)) > 0)
-        rlang::abort(c(
-          "Can't make an observer from a function that takes arguments.",
-          "Only functions without arguments can become observers."
-        ))
+        stop("Can't make an observer from a function that takes parameters; ",
+             "only functions without parameters can be reactive.")
       if (grepl("\\s", label, perl = TRUE)) {
         funcLabel <- "<observer>"
       } else {
@@ -1256,13 +1181,13 @@ Observer <- R6Class(
             # validation = function(e) NULL,
             # shiny.output.cancel = function(e) NULL
 
-            if (cnd_inherits(e, "shiny.silent.error")) {
+            if (inherits(e, "shiny.silent.error")) {
               return()
             }
 
             printError(e)
             if (!is.null(.domain)) {
-              .domain$unhandledError(e, close = TRUE)
+              .domain$unhandledError(e)
             }
           },
           finally = .domain$decrementBusyCount
@@ -1388,7 +1313,12 @@ Observer <- R6Class(
 #'
 #' @param x An expression (quoted or unquoted). Any return value will be
 #'   ignored.
-#' @inheritParams reactive
+#' @param env The parent environment for the reactive expression. By default,
+#'   this is the calling environment, the same as when defining an ordinary
+#'   non-reactive expression.
+#' @param quoted Is the expression quoted? By default, this is `FALSE`.
+#'   This is useful when you want to use an expression that is stored in a
+#'   variable; to do so, it must be quoted with `quote()`.
 #' @param label A label for the observer, useful for debugging.
 #' @param suspended If `TRUE`, start the observer in a suspended state. If
 #'   `FALSE` (the default), start in a non-suspended state.
@@ -1447,21 +1377,18 @@ Observer <- R6Class(
 #'   print(values$A + 1)
 #' })
 #'
-#' # To store expressions for later conversion to observe, use rlang::quo()
-#' myquo <- rlang::quo({ print(values$A + 3) })
-#' obsC <- rlang::inject(observe(!!myquo))
+#' # Can use quoted expressions
+#' obsC <- observe(quote({ print(values$A + 2) }), quoted = TRUE)
 #'
-#' # (Legacy) Can use quoted expressions
-#' obsD <- observe(quote({ print(values$A + 2) }), quoted = TRUE)
+#' # To store expressions for later conversion to observe, use quote()
+#' expr_q <- quote({ print(values$A + 3) })
+#' obsD <- observe(expr_q, quoted = TRUE)
 #'
 #' # In a normal Shiny app, the web client will trigger flush events. If you
 #' # are at the console, you can force a flush with flushReact()
 #' shiny:::flushReact()
 #' @export
-observe <- function(
-  x,
-  env = parent.frame(),
-  quoted = FALSE,
+observe <- function(x, env = parent.frame(), quoted = FALSE,
   ...,
   label = NULL,
   suspended = FALSE,
@@ -1472,11 +1399,18 @@ observe <- function(
 {
   check_dots_empty()
 
-  func <- installExprFunction(x, "func", env, quoted)
-  label <- funcToLabel(func, "observe", label)
+  x <- get_quosure(x, env, quoted)
+  fun <- as_function(x)
+  # as_function returns a function that takes `...`. We need one that takes no
+  # args.
+  formals(fun) <- list()
+
+  if (is.null(label)) {
+    label <- sprintf('observe(%s)', paste(deparse(get_expr(x)), collapse='\n'))
+  }
 
   o <- Observer$new(
-    func,
+    fun,
     label = label,
     suspended = suspended,
     priority = priority,
@@ -1969,7 +1903,7 @@ reactivePoll <- function(intervalMillis, session, checkFunc, valueFunc) {
 #' @export
 reactiveFileReader <- function(intervalMillis, session, filePath, readFunc, ...) {
   filePath <- coerceToFunc(filePath)
-  extraArgs <- list2(...)
+  extraArgs <- list(...)
 
   reactivePoll(
     intervalMillis, session,
@@ -2088,11 +2022,7 @@ maskReactiveContext <- function(expr) {
 
 #' Event handler
 #'
-#' Respond to "event-like" reactive inputs, values, and expressions. As of Shiny
-#' 1.6.0, we recommend using [bindEvent()] instead of `eventReactive()` and
-#' `observeEvent()`. This is because `bindEvent()` can be composed with
-#' [bindCache()], and because it can also be used with `render` functions (like
-#' [renderText()] and [renderPlot()]).
+#' Respond to "event-like" reactive inputs, values, and expressions.
 #'
 #' Shiny's reactive programming framework is primarily designed for calculated
 #' values (reactive expressions) and side-effect-causing actions (observers)
@@ -2114,17 +2044,13 @@ maskReactiveContext <- function(expr) {
 #' response to an event. (Note that "recalculate a value" does not generally
 #' count as performing an action--see `eventReactive` for that.) The first
 #' argument is the event you want to respond to, and the second argument is a
-#' function that should be called whenever the event occurs. Note that
-#' `observeEvent()` is equivalent to using `observe() %>% bindEvent()` and as of
-#' Shiny 1.6.0, we recommend the latter.
+#' function that should be called whenever the event occurs.
 #'
 #' Use `eventReactive` to create a *calculated value* that only
 #' updates in response to an event. This is just like a normal
 #' [reactive expression][reactive] except it ignores all the usual
 #' invalidations that come from its reactive dependencies; it only invalidates
-#' in response to the given event. Note that
-#' `eventReactive()` is equivalent to using `reactive() %>% bindEvent()` and as of
-#' Shiny 1.6.0, we recommend the latter.
+#' in response to the given event.
 #'
 #' @section ignoreNULL and ignoreInit:
 #'
@@ -2158,7 +2084,6 @@ maskReactiveContext <- function(expr) {
 #' Even though `ignoreNULL` and `ignoreInit` can be used for similar
 #' purposes they are independent from one another. Here's the result of combining
 #' these:
-
 #'
 #' \describe{
 #'   \item{`ignoreNULL = TRUE` and `ignoreInit = FALSE`}{
@@ -2198,30 +2123,23 @@ maskReactiveContext <- function(expr) {
 #' @param valueExpr The expression that produces the return value of the
 #'   `eventReactive`. It will be executed within an [isolate()]
 #'   scope.
-#' @param event.env The parent environment for the reactive expression. By default,
-#'   this is the calling environment, the same as when defining an ordinary
-#'   non-reactive expression. If `eventExpr` is a quosure and `event.quoted` is `TRUE`,
-#'   then `event.env` is ignored.
-#' @param event.quoted If it is `TRUE`, then the [`quote()`]ed value of `eventExpr`
-#'   will be used when `eventExpr` is evaluated. If `eventExpr` is a quosure and you
-#'   would like to use its expression as a value for `eventExpr`, then you must set
-#'  `event.quoted` to `TRUE`.
-#' @param handler.env The parent environment for the reactive expression. By default,
-#'   this is the calling environment, the same as when defining an ordinary
-#'   non-reactive expression. If `handlerExpr` is a quosure and `handler.quoted` is `TRUE`,
-#'   then `handler.env` is ignored.
-#' @param handler.quoted If it is `TRUE`, then the [`quote()`]ed value of `handlerExpr`
-#'   will be used when `handlerExpr` is evaluated. If `handlerExpr` is a quosure and you
-#'   would like to use its expression as a value for `handlerExpr`, then you must set
-#'  `handler.quoted` to `TRUE`.
-#' @param value.env The parent environment for the reactive expression. By default,
-#'   this is the calling environment, the same as when defining an ordinary
-#'   non-reactive expression. If `valueExpr` is a quosure and `value.quoted` is `TRUE`,
-#'   then `value.env` is ignored.
-#' @param value.quoted If it is `TRUE`, then the [`quote()`]ed value of `valueExpr`
-#'   will be used when `valueExpr` is evaluated. If `valueExpr` is a quosure and you
-#'   would like to use its expression as a value for `valueExpr`, then you must set
-#'  `value.quoted` to `TRUE`.
+#' @param event.env The parent environment for `eventExpr`. By default,
+#'   this is the calling environment.
+#' @param event.quoted Is the `eventExpr` expression quoted? By default,
+#'   this is `FALSE`. This is useful when you want to use an expression
+#'   that is stored in a variable; to do so, it must be quoted with
+#'   `quote()`.
+#' @param handler.env The parent environment for `handlerExpr`. By default,
+#'   this is the calling environment.
+#' @param handler.quoted Is the `handlerExpr` expression quoted? By
+#'   default, this is `FALSE`. This is useful when you want to use an
+#'   expression that is stored in a variable; to do so, it must be quoted with
+#'   `quote()`.
+#' @param value.env The parent environment for `valueExpr`. By default,
+#'   this is the calling environment.
+#' @param value.quoted Is the `valueExpr` expression quoted? By default,
+#'   this is `FALSE`. This is useful when you want to use an expression
+#'   that is stored in a variable; to do so, it must be quoted with `quote()`.
 #' @param label A label for the observer or reactive, useful for debugging.
 #' @param suspended If `TRUE`, start the observer in a suspended state. If
 #'   `FALSE` (the default), start in a non-suspended state.
@@ -2233,8 +2151,8 @@ maskReactiveContext <- function(expr) {
 #' @param autoDestroy If `TRUE` (the default), the observer will be
 #'   automatically destroyed when its domain (if any) ends.
 #' @param ignoreNULL Whether the action should be triggered (or value
-#'   calculated, in the case of `eventReactive`) when the input event expression
-#'   is `NULL`. See Details.
+#'   calculated, in the case of `eventReactive`) when the input is
+#'   `NULL`. See Details.
 #' @param ignoreInit If `TRUE`, then, when this `observeEvent` is
 #'   first created/initialized, ignore the `handlerExpr` (the second
 #'   argument), whether it is otherwise supposed to run or not. The default is
@@ -2252,7 +2170,7 @@ maskReactiveContext <- function(expr) {
 #' @seealso [actionButton()]
 #'
 #' @examples
-#' ## Only run examples in interactive R sessions
+#' ## Only run this example in interactive R sessions
 #' if (interactive()) {
 #'
 #'   ## App 1: Sample usage
@@ -2271,12 +2189,6 @@ maskReactiveContext <- function(expr) {
 #'       observeEvent(input$button, {
 #'         cat("Showing", input$x, "rows\n")
 #'       })
-#'       # The observeEvent() above is equivalent to:
-#'       # observe({
-#'       #    cat("Showing", input$x, "rows\n")
-#'       #   }) %>%
-#'       #   bindEvent(input$button)
-#'
 #'       # Take a reactive dependency on input$button, but
 #'       # not on any of the stuff inside the function
 #'       df <- eventReactive(input$button, {
@@ -2296,12 +2208,6 @@ maskReactiveContext <- function(expr) {
 #'         print(paste("This will only be printed once; all",
 #'               "subsequent button clicks won't do anything"))
 #'       }, once = TRUE)
-#'       # The observeEvent() above is equivalent to:
-#'       # observe({
-#'       #   print(paste("This will only be printed once; all",
-#'       #         "subsequent button clicks won't do anything"))
-#'       #   }) %>%
-#'       #   bindEvent(input$go, once = TRUE)
 #'     }
 #'   )
 #'
@@ -2335,19 +2241,21 @@ observeEvent <- function(eventExpr, handlerExpr,
 {
   check_dots_empty()
 
-  eventQ <- exprToQuo(eventExpr, event.env, event.quoted)
-  handlerQ <- exprToQuo(handlerExpr, handler.env, handler.quoted)
+  eventExpr   <- get_quosure(eventExpr,   event.env,   event.quoted)
+  handlerExpr <- get_quosure(handlerExpr, handler.env, handler.quoted)
 
-  label <- quoToLabel(eventQ, "observeEvent", label)
+  if (is.null(label)) {
+    label <- sprintf('observeEvent(%s)', paste(deparse(get_expr(eventExpr)), collapse='\n'))
+  }
 
   handler <- inject(observe(
-    !!handlerQ,
+    !!handlerExpr,
     label = label,
     suspended = suspended,
     priority = priority,
     domain = domain,
     autoDestroy = TRUE,
-    ..stacktraceon = TRUE
+    ..stacktraceon = FALSE # TODO: Does this go in the bindEvent?
   ))
 
   o <- inject(bindEvent(
@@ -2355,7 +2263,7 @@ observeEvent <- function(eventExpr, handlerExpr,
     ignoreInit = ignoreInit,
     once = once,
     label = label,
-    !!eventQ,
+    !!eventExpr,
     x = handler
   ))
 
@@ -2373,17 +2281,19 @@ eventReactive <- function(eventExpr, valueExpr,
 {
   check_dots_empty()
 
-  eventQ <- exprToQuo(eventExpr, event.env, event.quoted)
-  valueQ <- exprToQuo(valueExpr, value.env, value.quoted)
+  eventExpr <- get_quosure(eventExpr, event.env, event.quoted)
+  valueExpr <- get_quosure(valueExpr, value.env, value.quoted)
 
-  label <- quoToLabel(eventQ, "eventReactive", label)
+  if (is.null(label)) {
+    label <- sprintf('eventReactive(%s)', paste(deparse(get_expr(eventExpr)), collapse='\n'))
+  }
 
   invisible(inject(bindEvent(
     ignoreNULL = ignoreNULL,
     ignoreInit = ignoreInit,
     label = label,
-    !!eventQ,
-    x = reactive(!!valueQ, domain = domain, label = label)
+    !!eventExpr,
+    x = reactive(!!valueExpr, domain = domain, label = label)
   )))
 }
 
@@ -2442,7 +2352,7 @@ isNullEvent <- function(value) {
 #' reactive recently (within the time window) invalidated. New `r`
 #' invalidations do not reset the time window. This means that if invalidations
 #' continually come from `r` within the time window, the throttled reactive
-#' will invalidate regularly, at a rate equal to or slower than the time
+#' will invalidate regularly, at a rate equal to or slower than than the time
 #' window.
 #'
 #' `ooo-oo-oo---- => o--o--o--o---`
@@ -2525,11 +2435,11 @@ debounce <- function(r, millis, priority = 100, domain = getDefaultReactiveDomai
 
       # Ensure r() is called only after setting firstRun to FALSE since r()
       # may throw an error
-      try(r(), silent = TRUE)
+      r()
       return()
     }
     # This ensures r() is still tracked after firstRun
-    try(r(), silent = TRUE)
+    r()
 
     # The value (or possibly millis) changed. Start or reset the timer.
     v$when <- getDomainTimeMs(domain) + millis()
@@ -2562,7 +2472,7 @@ debounce <- function(r, millis, priority = 100, domain = getDefaultReactiveDomai
   # commenting it out and studying the unit test failure that results.
   primer <- observe({
     primer$destroy()
-    try(er(), silent = TRUE)
+    er()
   }, label = "debounce primer", domain = domain, priority = priority)
 
   er
@@ -2604,7 +2514,7 @@ throttle <- function(r, millis, priority = 100, domain = getDefaultReactiveDomai
   }
 
   # Responsible for tracking when f() changes.
-  observeEvent(try(r(), silent = TRUE), {
+  observeEvent(r(), {
     if (v$pending) {
       # In a blackout period and someone already scheduled; do nothing
     } else if (blackoutMillisLeft() > 0) {

R/reexports.R

@@ -1,6 +1,6 @@
 ####
-# Generated by `./tools/documentation/updateReexports.R`: do not edit by hand
-# Please call `source('tools/documentation/updateReexports.R')` from the root folder to update`
+# Generated by `./tools/updateReexports.R`: do not edit by hand
+# Please call `source('tools/updateReexports.R') from the root folder to update`
 ####
 
 
@@ -90,20 +90,17 @@ htmltools::em
 #' @export
 htmltools::hr
 
+
+# htmltools tag.Rd -------------------------------------------------------------
+
 #' @importFrom htmltools tag
 #' @export
 htmltools::tag
 
-
-# htmltools tagList.Rd ---------------------------------------------------------
-
 #' @importFrom htmltools tagList
 #' @export
 htmltools::tagList
 
-
-# htmltools tagAppendAttributes.Rd ---------------------------------------------
-
 #' @importFrom htmltools tagAppendAttributes
 #' @export
 htmltools::tagAppendAttributes
@@ -116,9 +113,6 @@ htmltools::tagHasAttribute
 #' @export
 htmltools::tagGetAttribute
 
-
-# htmltools tagAppendChild.Rd --------------------------------------------------
-
 #' @importFrom htmltools tagAppendChild
 #' @export
 htmltools::tagAppendChild

R/render-cached-plot.R

@@ -9,7 +9,7 @@
 #' changes.
 #'
 #' `cacheKeyExpr` is an expression which, when evaluated, returns an object
-#' which will be serialized and hashed using the [rlang::hash()]
+#' which will be serialized and hashed using the [digest::digest()]
 #' function to generate a string that will be used as a cache key. This key is
 #' used to identify the contents of the plot: if the cache key is the same as a
 #' previous time, it assumes that the plot is the same and can be retrieved from
@@ -33,7 +33,7 @@
 #' to normal R objects before returning them. Your expression could even
 #' serialize and hash that information in an efficient way and return a string,
 #' which will in turn be hashed (very quickly) by the
-#' [rlang::hash()] function.
+#' [digest::digest()] function.
 #'
 #' Internally, the result from `cacheKeyExpr` is combined with the name of
 #' the output (if you assign it to `output$plot1`, it will be combined
@@ -181,7 +181,7 @@
 #' # At the top of app.R, this set the application-scoped cache to be a disk
 #' # cache that can be shared among multiple concurrent R processes, and is
 #' # deleted when the system reboots.
-#' shinyOptions(cache = cachem::cache_disk(file.path(dirname(tempdir()), "myapp-cache")))
+#' shinyOptions(cache = cachem::cache_disk(file.path(dirname(tempdir()), "myapp-cache"))
 #'
 #' # At the top of app.R, this set the application-scoped cache to be a disk
 #' # cache that can be shared among multiple concurrent R processes, and

R/render-plot.R

@@ -34,19 +34,19 @@
 #'   When rendering an inline plot, you must provide numeric values (in pixels)
 #'   to both \code{width} and \code{height}.
 #' @param res Resolution of resulting plot, in pixels per inch. This value is
-#'   passed to [plotPNG()]. Note that this affects the resolution of PNG
+#'   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. If the value is `NA` (the
-#'   default), then `ggplot2::get_alt_text()` is used to extract alt text from
-#'   ggplot objects; for other plots, `NA` results in alt text of "Plot object".
-#'   `NULL` or `""` is not recommended because those should be limited to
-#'   decorative images.
-#' @param ... Arguments to be passed through to [plotPNG()].
+#' @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.
-#' @inheritParams renderUI
+#' @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 execOnResize If `FALSE` (the default), then when a plot is
 #'   resized, Shiny will *replay* the plot drawing commands with
 #'   [grDevices::replayPlot()] instead of re-executing `expr`.
@@ -58,18 +58,15 @@
 #'   interactive R Markdown document.
 #' @export
 renderPlot <- function(expr, width = 'auto', height = 'auto', res = 72, ...,
-                       alt = NA,
+                       alt = "Plot object",
                        env = parent.frame(), quoted = FALSE,
                        execOnResize = FALSE, outputArgs = list()
 ) {
 
-  func <- installExprFunction(
-    expr, "func", env, quoted,
-    label = "renderPlot",
-    # This ..stacktraceon is matched by a ..stacktraceoff.. when plotFunc
-    # is called
-    ..stacktraceon = TRUE
-  )
+  expr <- get_quosure(expr, env, quoted)
+  # This ..stacktraceon is matched by a ..stacktraceoff.. when plotFunc
+  # is called
+  func <- quoToFunction(expr, "renderPlot", ..stacktraceon = TRUE)
 
   args <- list(...)
 
@@ -187,15 +184,15 @@ renderPlot <- function(expr, width = 'auto', height = 'auto', res = 72, ...,
     outputFunc,
     renderFunc,
     outputArgs,
-    cacheHint = list(userExpr = installedFuncExpr(func), res = res)
+    cacheHint = list(userExpr = get_expr(expr), res = res)
   )
   class(markedFunc) <- c("shiny.renderPlot", class(markedFunc))
   markedFunc
 }
 
 resizeSavedPlot <- function(name, session, result, width, height, alt, pixelratio, res, ...) {
-  if (isTRUE(result$img$width == width && result$img$height == height &&
-      result$pixelratio == pixelratio && result$res == res)) {
+  if (result$img$width == width && result$img$height == height &&
+      result$pixelratio == pixelratio && result$res == res) {
     return(result)
   }
 
@@ -215,7 +212,7 @@ resizeSavedPlot <- function(name, session, result, width, height, alt, pixelrati
     src = session$fileUrl(name, outfile, contentType = "image/png"),
     width = width,
     height = height,
-    alt = result$alt,
+    alt = alt,
     coordmap = coordmap,
     error = attr(coordmap, "error", exact = TRUE)
   )
@@ -266,8 +263,6 @@ drawPlot <- function(name, session, func, width, height, alt, pixelratio, res, .
               # addition to ggplot, and there's a print method for that class, that we
               # won't override that method. https://github.com/rstudio/shiny/issues/841
               print.ggplot <- custom_print.ggplot
-              # For compatibility with ggplot2 >v4.0.0
-              `print.ggplot2::ggplot` <- custom_print.ggplot
 
               # Use capture.output to squelch printing to the actual console; we
               # are only interested in plot output
@@ -293,7 +288,6 @@ drawPlot <- function(name, session, func, width, height, alt, pixelratio, res, .
               recordedPlot = grDevices::recordPlot(),
               coordmap = getCoordmap(value, width*pixelratio, height*pixelratio, res*pixelratio),
               pixelratio = pixelratio,
-              alt = if (anyNA(alt)) getAltText(value) else alt,
               res = res
             )
           }
@@ -308,10 +302,10 @@ drawPlot <- function(name, session, func, width, height, alt, pixelratio, res, .
     ),
     function(result) {
       result$img <- dropNulls(list(
-        src = session$fileUrl(name, outfile, contentType = 'image/png'),
+        src = session$fileUrl(name, outfile, contentType='image/png'),
         width = width,
         height = height,
-        alt = result$alt,
+        alt = alt,
         coordmap = result$coordmap,
         # Get coordmap error message if present
         error = attr(result$coordmap, "error", exact = TRUE)
@@ -345,24 +339,6 @@ custom_print.ggplot <- function(x) {
   ), class = "ggplot_build_gtable")
 }
 
-# Infer alt text description from renderPlot() value
-# (currently just ggplot2 is supported)
-getAltText <- function(x, default = "Plot object") {
-  # Since, inside renderPlot(), custom_print.ggplot()
-  # overrides print.ggplot, this class indicates a ggplot()
-  if (!inherits(x, "ggplot_build_gtable")) {
-    return(default)
-  }
-  # ggplot2::get_alt_text() was added in v3.3.4
-  # https://github.com/tidyverse/ggplot2/pull/4482
-  get_alt <- getNamespace("ggplot2")$get_alt_text
-  if (!is.function(get_alt)) {
-    return(default)
-  }
-  alt <- paste(get_alt(x$build), collapse = " ")
-  if (nzchar(alt)) alt else default
-}
-
 # The coordmap extraction functions below return something like the examples
 # below. For base graphics:
 # plot(mtcars$wt, mtcars$mpg)
@@ -614,7 +590,7 @@ getGgplotCoordmap <- function(p, width, height, res) {
 find_panel_info <- function(b) {
   # Structure of ggplot objects changed after 2.1.0. After 2.2.1, there was a
   # an API for extracting the necessary information.
-  ggplot_ver <- get_package_version("ggplot2")
+  ggplot_ver <- utils::packageVersion("ggplot2")
 
   if (ggplot_ver > "2.2.1") {
     find_panel_info_api(b)

R/render-table.R

@@ -1,12 +1,10 @@
 #' Table Output
 #'
-#' @description
-#' The `tableOuptut()`/`renderTable()` pair creates a reactive table that is
-#' suitable for display small matrices and data frames. The columns are
-#' formatted with [xtable::xtable()].
+#' Creates a reactive table that is suitable for assigning to an `output`
+#' slot.
 #'
-#' See [renderDataTable()] for data frames that are too big to fit on a single
-#' page.
+#' The corresponding HTML output tag should be `div` and have the CSS
+#' class name `shiny-html-output`.
 #'
 #' @param expr An expression that returns an R object that can be used with
 #'   [xtable::xtable()].
@@ -42,28 +40,13 @@
 #'   (i.e. they either evaluate to `NA` or `NaN`).
 #' @param ... Arguments to be passed through to [xtable::xtable()]
 #'   and [xtable::print.xtable()].
-#' @inheritParams renderUI
+#' @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 [tableOutput()] when `renderTable` is
 #'   used in an interactive R Markdown document.
 #' @export
-#' @examples
-#' ## Only run this example in interactive R sessions
-#' if (interactive()) {
-#'   # table example
-#'   shinyApp(
-#'     ui = fluidPage(
-#'       fluidRow(
-#'         column(12,
-#'           tableOutput('table')
-#'         )
-#'       )
-#'     ),
-#'     server = function(input, output) {
-#'       output$table <- renderTable(iris)
-#'     }
-#'   )
-#' }
 renderTable <- function(expr, striped = FALSE, hover = FALSE,
                         bordered = FALSE, spacing = c("s", "xs", "m", "l"),
                         width = "auto", align = NULL,
@@ -72,7 +55,8 @@ renderTable <- function(expr, striped = FALSE, hover = FALSE,
                         env = parent.frame(), quoted = FALSE,
                         outputArgs=list())
 {
-  func <- installExprFunction(expr, "func", env, quoted, label = "renderTable")
+  expr <- get_quosure(expr, env, quoted)
+  func <- quoToFunction(expr, "renderTable")
 
   if (!is.function(spacing)) spacing <- match.arg(spacing)
 

R/run-url.R

@@ -23,10 +23,10 @@
 #' @examples
 #' ## Only run this example in interactive R sessions
 #' if (interactive()) {
-#'   runUrl('https://github.com/rstudio/shiny_example/archive/main.tar.gz')
+#'   runUrl('https://github.com/rstudio/shiny_example/archive/master.tar.gz')
 #'
 #'   # Can run an app from a subdirectory in the archive
-#'   runUrl("https://github.com/rstudio/shiny_example/archive/main.zip",
+#'   runUrl("https://github.com/rstudio/shiny_example/archive/master.zip",
 #'     subdir = "inst/shinyapp/")
 #' }
 runUrl <- function(url, filetype = NULL, subdir = NULL, destdir = NULL, ...) {
@@ -121,8 +121,7 @@ runGist <- function(gist, destdir = NULL, ...) {
 #' @param username GitHub username. If `repo` is of the form
 #'   `"username/repo"`, `username` will be taken from `repo`.
 #' @param ref Desired git reference. Could be a commit, tag, or branch name.
-#'   Defaults to `"HEAD"`, which means the default branch on GitHub, typically
-#'   `"main"` or `"master"`.
+#'   Defaults to `"master"`.
 #' @export
 #' @examples
 #' ## Only run this example in interactive R sessions
@@ -134,7 +133,7 @@ runGist <- function(gist, destdir = NULL, ...) {
 #'   runGitHub("shiny_example", "rstudio", subdir = "inst/shinyapp/")
 #' }
 runGitHub <- function(repo, username = getOption("github.user"),
-                      ref = "HEAD", subdir = NULL, destdir = NULL, ...) {
+                      ref = "master", subdir = NULL, destdir = NULL, ...) {
 
   if (grepl('/', repo)) {
     res <- strsplit(repo, '/')[[1]]

R/runapp.R

@@ -22,13 +22,10 @@
 #' @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 between 3000:8000, excluding ports that are blocked
-#'   by Google Chrome for being considered unsafe: 3659, 4045, 5060,
-#'   5061, 6000, 6566, 6665:6669 and 6697. Up to twenty random
-#'   ports will be tried.
+#'   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. The value of this parameter can also be a
+#'   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
@@ -86,7 +83,8 @@
 #' @export
 runApp <- function(appDir=getwd(),
                    port=getOption('shiny.port'),
-                   launch.browser = getOption('shiny.launch.browser', interactive()),
+                   launch.browser=getOption('shiny.launch.browser',
+                                            interactive()),
                    host=getOption('shiny.host', '127.0.0.1'),
                    workerId="", quiet=FALSE,
                    display.mode=c("auto", "normal", "showcase"),
@@ -304,8 +302,7 @@ runApp <- function(appDir=getwd(),
           # 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
-          # https://chromium.googlesource.com/chromium/src.git/+/refs/heads/main/net/base/port_util.cc
-          if (!port %in% c(3659, 4045, 5060, 5061, 6000, 6566, 6665:6669, 6697)) {
+          if (!port %in% c(3659, 4045, 6000, 6665:6669, 6697)) {
             break
           }
         }
@@ -445,20 +442,8 @@ stopApp <- function(returnValue = invisible()) {
 #' @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
-#'   `"auto"`, which uses the value of `DisplayMode` in the example's
-#'   `DESCRIPTION` file. Set to `"showcase"` to show the app code and
-#'   description with the running app, or `"normal"` to see the example without
+#'   `showcase`, but may be set to `normal` to see the example without
 #'   code or commentary.
-#' @param package The package in which to find the example (defaults to
-#'   `"shiny"`).
-#'
-#'   To provide examples in your package, store examples in the
-#'   `inst/examples-shiny` directory of your package. Each example should be
-#'   in its own subdirectory and should be runnable when [runApp()] is called
-#'   on the subdirectory. Example apps can include a `DESCRIPTION` file and a
-#'   `README.md` file to provide metadata and commentary about the example. See
-#'   the article on [Display Modes](https://shiny.posit.co/r/articles/build/display-modes/)
-#'   on the Shiny website for more information.
 #' @inheritParams runApp
 #'
 #' @examples
@@ -474,46 +459,33 @@ stopApp <- function(returnValue = invisible()) {
 #'   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"),
-  package = "shiny"
-) {
-  if (!identical(package, "shiny") && !is_installed(package)) {
-    rlang::check_installed(package)
-  }
-
-  use_legacy_shiny_examples <-
-    identical(package, "shiny") &&
-    isTRUE(getOption('shiny.legacy.examples', FALSE))
-
-  examplesDir <- system_file(
-    if (use_legacy_shiny_examples) "examples" else "examples-shiny",
-    package = package
-  )
-
+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)) {
-    valid_examples <- sprintf(
-      'Valid examples in {%s}: "%s"',
-      package,
-      paste(list.files(examplesDir), collapse = '", "')
-    )
-
     if (is.na(example)) {
-      message(valid_examples)
-      return(invisible())
+      errFun <- message
+      errMsg <- ''
+    }
+    else {
+      errFun <- stop
+      errMsg <- paste('Example', example, 'does not exist. ')
     }
 
-    stop("Example '", example, "' does not exist. ", valid_examples)
+    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)
   }
-
-  runApp(dir, port = port, host = host, launch.browser = launch.browser,
-         display.mode = display.mode)
 }
 
 #' Run a gadget

R/serializers.R

@@ -5,6 +5,7 @@
 #'   value. The returned value will be used for the test snapshot.
 #' @param session A Shiny session object.
 #'
+#' @keywords internal
 #' @export
 setSerializer <- function(inputId, fun, session = getDefaultReactiveDomain()) {
   if (is.null(session)) {

R/server-input-handlers.R

@@ -1,9 +1,5 @@
-# Create a Map object for input handlers and register the defaults.
-# This is assigned in .onLoad time.
-inputHandlers <- NULL
-on_load({
-  inputHandlers <- Map$new()
-})
+# Create a map for input handlers and register the defaults.
+inputHandlers <- Map$new()
 
 #' Register an Input Handler
 #'
@@ -45,12 +41,12 @@ on_load({
 #' })
 #'
 #' ## On the Javascript side, the associated input binding must have a corresponding getType method:
-#' # getType: function(el) {
-#' #   return "mypackage.validint";
-#' # }
+#' getType: function(el) {
+#'   return "mypackage.validint";
+#' }
 #'
 #' }
-#' @seealso [removeInputHandler()] [applyInputHandlers()]
+#' @seealso [removeInputHandler()]
 #' @export
 registerInputHandler <- function(type, fun, force=FALSE){
   if (inputHandlers$containsKey(type) && !force){
@@ -129,117 +125,115 @@ applyInputHandlers <- function(inputs, shinysession = getDefaultReactiveDomain()
   inputs
 }
 
-on_load({
-  # Takes a list-of-lists and returns a matrix. The lists
-  # must all be the same length. NULL is replaced by NA.
-  registerInputHandler("shiny.matrix", function(data, ...) {
-    if (length(data) == 0)
-      return(matrix(nrow=0, ncol=0))
 
-    m <- matrix(unlist(lapply(data, function(x) {
-      sapply(x, function(y) {
-        ifelse(is.null(y), NA, y)
-      })
-    })), nrow = length(data[[1]]), ncol = length(data))
-    return(m)
-  })
+# Takes a list-of-lists and returns a matrix. The lists
+# must all be the same length. NULL is replaced by NA.
+registerInputHandler("shiny.matrix", function(data, ...) {
+  if (length(data) == 0)
+    return(matrix(nrow=0, ncol=0))
 
-
-  registerInputHandler("shiny.number", function(val, ...){
-    ifelse(is.null(val), NA, val)
-  })
-
-  registerInputHandler("shiny.password", function(val, shinysession, name) {
-    # Mark passwords as not serializable
-    setSerializer(name, serializerUnserializable)
-    val
-  })
-
-  registerInputHandler("shiny.date", function(val, ...){
-    # First replace NULLs with NA, then convert to Date vector
-    datelist <- ifelse(lapply(val, is.null), NA, val)
-
-    res <- NULL
-    tryCatch({
-        res <- as.Date(unlist(datelist))
-      },
-      error = function(e) {
-        # It's possible for client to send a string like "99999-01-01", which
-        # as.Date can't handle.
-        warning(e$message)
-        res <<- as.Date(rep(NA, length(datelist)))
-      }
-    )
-
-    res
-  })
-
-  registerInputHandler("shiny.datetime", function(val, ...){
-    # First replace NULLs with NA, then convert to POSIXct vector
-    times <- lapply(val, function(x) {
-      if (is.null(x)) NA
-      else x
+  m <- matrix(unlist(lapply(data, function(x) {
+    sapply(x, function(y) {
+      ifelse(is.null(y), NA, y)
     })
-    as.POSIXct(unlist(times), origin = "1970-01-01", tz = "UTC")
-  })
-
-  registerInputHandler("shiny.action", function(val, shinysession, name) {
-    # mark up the action button value with a special class so we can recognize it later
-    class(val) <- c("shinyActionButtonValue", class(val))
-    val
-  })
-
-  registerInputHandler("shiny.file", function(val, shinysession, name) {
-    # This function is only used when restoring a Shiny fileInput. When a file is
-    # uploaded the usual way, it takes a different code path and won't hit this
-    # function.
-    if (is.null(val))
-      return(NULL)
-
-    # The data will be a named list of lists; convert to a data frame.
-    val <- as.data.frame(lapply(val, unlist), stringsAsFactors = FALSE)
-
-    # `val$datapath` should be a filename without a path, for security reasons.
-    if (basename(val$datapath) != val$datapath) {
-      stop("Invalid '/' found in file input path.")
-    }
-
-    # Prepend the persistent dir
-    oldfile <- file.path(getCurrentRestoreContext()$dir, val$datapath)
-
-    # Copy the original file to a new temp dir, so that a restored session can't
-    # modify the original.
-    newdir <- file.path(tempdir(), createUniqueId(12))
-    dir.create(newdir)
-    val$datapath <- file.path(newdir, val$datapath)
-    file.copy(oldfile, val$datapath)
-
-    # Need to mark this input value with the correct serializer. When a file is
-    # uploaded the usual way (instead of being restored), this occurs in
-    # session$`@uploadEnd`.
-    setSerializer(name, serializerFileInput)
-
-    snapshotPreprocessInput(name, snapshotPreprocessorFileInput)
-
-    val
-  })
-
-
-  # to be used with !!!answer
-  registerInputHandler("shiny.symbolList", function(val, ...) {
-    if (is.null(val)) {
-      list()
-    } else {
-      lapply(val, as.symbol)
-    }
-  })
-  # to be used with !!answer
-  registerInputHandler("shiny.symbol", function(val, ...) {
-    if (is.null(val) || identical(val, "")) {
-      NULL
-    } else {
-      as.symbol(val)
-    }
-  })
-
+  })), nrow = length(data[[1]]), ncol = length(data))
+  return(m)
+})
+
+
+registerInputHandler("shiny.number", function(val, ...){
+  ifelse(is.null(val), NA, val)
+})
+
+registerInputHandler("shiny.password", function(val, shinysession, name) {
+  # Mark passwords as not serializable
+  setSerializer(name, serializerUnserializable)
+  val
+})
+
+registerInputHandler("shiny.date", function(val, ...){
+  # First replace NULLs with NA, then convert to Date vector
+  datelist <- ifelse(lapply(val, is.null), NA, val)
+
+  res <- NULL
+  tryCatch({
+      res <- as.Date(unlist(datelist))
+    },
+    error = function(e) {
+      # It's possible for client to send a string like "99999-01-01", which
+      # as.Date can't handle.
+      warning(e$message)
+      res <<- as.Date(rep(NA, length(datelist)))
+    }
+  )
+
+  res
+})
+
+registerInputHandler("shiny.datetime", function(val, ...){
+  # First replace NULLs with NA, then convert to POSIXct vector
+  times <- lapply(val, function(x) {
+    if (is.null(x)) NA
+    else x
+  })
+  as.POSIXct(unlist(times), origin = "1970-01-01", tz = "UTC")
+})
+
+registerInputHandler("shiny.action", function(val, shinysession, name) {
+  # mark up the action button value with a special class so we can recognize it later
+  class(val) <- c(class(val), "shinyActionButtonValue")
+  val
+})
+
+registerInputHandler("shiny.file", function(val, shinysession, name) {
+  # This function is only used when restoring a Shiny fileInput. When a file is
+  # uploaded the usual way, it takes a different code path and won't hit this
+  # function.
+  if (is.null(val))
+    return(NULL)
+
+  # The data will be a named list of lists; convert to a data frame.
+  val <- as.data.frame(lapply(val, unlist), stringsAsFactors = FALSE)
+
+  # `val$datapath` should be a filename without a path, for security reasons.
+  if (basename(val$datapath) != val$datapath) {
+    stop("Invalid '/' found in file input path.")
+  }
+
+  # Prepend the persistent dir
+  oldfile <- file.path(getCurrentRestoreContext()$dir, val$datapath)
+
+  # Copy the original file to a new temp dir, so that a restored session can't
+  # modify the original.
+  newdir <- file.path(tempdir(), createUniqueId(12))
+  dir.create(newdir)
+  val$datapath <- file.path(newdir, val$datapath)
+  file.copy(oldfile, val$datapath)
+
+  # Need to mark this input value with the correct serializer. When a file is
+  # uploaded the usual way (instead of being restored), this occurs in
+  # session$`@uploadEnd`.
+  setSerializer(name, serializerFileInput)
+
+  snapshotPreprocessInput(name, snapshotPreprocessorFileInput)
+
+  val
+})
+
+
+# to be used with !!!answer
+registerInputHandler("shiny.symbolList", function(val, ...) {
+  if (is.null(val)) {
+    list()
+  } else {
+    lapply(val, as.symbol)
+  }
+})
+# to be used with !!answer
+registerInputHandler("shiny.symbol", function(val, ...) {
+  if (is.null(val) || identical(val, "")) {
+    NULL
+  } else {
+    as.symbol(val)
+  }
 })

R/server.R

@@ -1,12 +1,7 @@
 #' @include server-input-handlers.R
 
-appsByToken <- NULL
-appsNeedingFlush <- NULL
-on_load({
-  appsByToken <- Map$new()
-  appsNeedingFlush <- Map$new()
-})
-
+appsByToken <- Map$new()
+appsNeedingFlush <- Map$new()
 
 # Provide a character representation of the WS that can be used
 # as a key in a Map.
@@ -34,9 +29,7 @@ registerClient <- function(client) {
 
 #' Define Server Functionality
 #'
-#' @description `r lifecycle::badge("superseded")`
-#'
-#' @description Defines the server-side logic of the Shiny application. This generally
+#' Defines the server-side logic of the Shiny application. This generally
 #' involves creating functions that map user inputs to various kinds of output.
 #' In older versions of Shiny, it was necessary to call `shinyServer()` in
 #' the `server.R` file, but this is no longer required as of Shiny 0.10.
@@ -54,7 +47,7 @@ registerClient <- function(client) {
 #' optional `session` parameter, which is used when greater control is
 #' needed.
 #'
-#' See the [tutorial](https://shiny.rstudio.com/tutorial/) for more
+#' See the [tutorial](http://rstudio.github.com/shiny/tutorial/) for more
 #' on how to write a server function.
 #'
 #' @param func The server function for this application. See the details section
@@ -83,17 +76,6 @@ registerClient <- function(client) {
 #' @export
 #' @keywords internal
 shinyServer <- function(func) {
-  if (in_devmode()) {
-    shinyDeprecated(
-      "0.10.0", "shinyServer()",
-      details = paste0(
-        "When removing `shinyServer()`, ",
-        "ensure that the last expression returned from server.R ",
-        "is the function normally supplied to `shinyServer(func)`."
-      )
-    )
-  }
-
   .globals$server <- list(func)
   invisible(func)
 }
@@ -127,16 +109,13 @@ decodeMessage <- function(data) {
   return(mainMessage)
 }
 
-autoReloadCallbacks <- NULL
-on_load({
-  autoReloadCallbacks <- Callbacks$new()
-})
+autoReloadCallbacks <- Callbacks$new()
 
 createAppHandlers <- function(httpHandlers, serverFuncSource) {
   appvars <- new.env()
   appvars$server <- NULL
 
-  sys.www.root <- system_file('www', package='shiny')
+  sys.www.root <- system.file('www', package='shiny')
 
   # This value, if non-NULL, must be present on all HTTP and WebSocket
   # requests as the Shiny-Shared-Secret header or else access will be
@@ -158,7 +137,7 @@ createAppHandlers <- function(httpHandlers, serverFuncSource) {
       }
 
       if (identical(ws$request$PATH_INFO, "/autoreload/")) {
-        if (!get_devmode_option("shiny.autoreload", FALSE)) {
+        if (!getOption("shiny.autoreload", FALSE)) {
           ws$close()
           return(TRUE)
         }
@@ -339,7 +318,7 @@ argsForServerFunc <- function(serverFunc, session) {
 getEffectiveBody <- function(func) {
   if (is.null(func))
     NULL
-  else if (isS4(func) && inherits(func, "functionWithTrace"))
+  else if (isS4(func) && class(func) == "functionWithTrace")
     body(func@original)
   else
     body(func)
@@ -393,7 +372,7 @@ startApp <- function(appObj, port, host, quiet) {
     list(
       # Always handle /session URLs dynamically, even if / is a static path.
       "session" = excludeStaticPath(),
-      "shared" = system_file(package = "shiny", "www", "shared")
+      "shared" = system.file(package = "shiny", "www", "shared")
     ),
     .globals$resourcePaths
   )

R/shiny-options.R

@@ -65,20 +65,16 @@ getShinyOption <- function(name, default = NULL) {
 #'   changes are detected, all connected Shiny sessions are reloaded. This
 #'   allows for fast feedback loops when tweaking Shiny UI.
 #'
-#'   Monitoring for changes is no longer expensive, thanks to the \pkg{watcher}
-#'   package, but this feature is still intended only for development.
+#'   Since monitoring for changes is expensive (we simply poll for last
+#'   modified times), this feature is intended only for development.
 #'
 #'   You can customize the file patterns Shiny will monitor by setting the
-#'   shiny.autoreload.pattern option. For example, to monitor only `ui.R`:
-#'   `options(shiny.autoreload.pattern = glob2rx("ui.R"))`. 
+#'   shiny.autoreload.pattern option. For example, to monitor only ui.R:
+#'   `options(shiny.autoreload.pattern = glob2rx("ui.R"))`
 #'
-#'   As mentioned above, Shiny no longer polls watched files for changes.
-#'   Instead, using \pkg{watcher}, Shiny is notified of file changes as they
-#'   occur. These changes are batched together within a customizable latency
-#'   period. You can adjust this period by setting
-#'   `options(shiny.autoreload.interval = 2000)` (in milliseconds). This value
-#'   converted to seconds and passed to the `latency` argument of
-#'   [watcher::watcher()]. The default latency is 250ms.}
+#'   The default polling interval is 500 milliseconds. You can change this
+#'   by setting e.g. `options(shiny.autoreload.interval = 2000)` (every
+#'   two seconds).}
 #' \item{shiny.deprecation.messages (defaults to `TRUE`)}{This controls whether messages for
 #'   deprecated functions in Shiny will be printed. See
 #'   [shinyDeprecated()] for more information.}
@@ -92,17 +88,12 @@ getShinyOption <- function(name, default = NULL) {
 #' \item{shiny.host (defaults to `"127.0.0.1"`)}{The IP address that Shiny should listen on. See
 #'   [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 `r version_jquery` is used.}
-#' \item{shiny.json.digits (defaults to `I(16)`)}{Max number of digits to use when converting
-#'   numbers to JSON format to send to the client web browser. Use [I()] to specify significant digits.
-#'   Use `NA` for max precision.}
+#' Currently only values of `3` or `1` are supported. If `1`, then jQuery 1.12.4 is used. If `3`,
+#' 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
 #'   when an app is run. See [runApp()] for more information.}
-#' \item{shiny.mathjax.url (defaults to `"https://mathjax.rstudio.com/latest/MathJax.js"`)}{
-#'   The URL that should be used to load MathJax, via [withMathJax()].}
-#' \item{shiny.mathjax.config (defaults to `"config=TeX-AMS-MML_HTMLorMML"`)}{The querystring
-#'   used to load MathJax, via [withMathJax()].}
 #' \item{shiny.maxRequestSize (defaults to 5MB)}{This is a number which specifies the maximum
 #'   web request size, which serves as a size limit for file uploads.}
 #' \item{shiny.minified (defaults to `TRUE`)}{By default
@@ -117,7 +108,7 @@ getShinyOption <- function(name, default = NULL) {
 #'   production.}
 #' \item{shiny.sanitize.errors (defaults to `FALSE`)}{If `TRUE`, then normal errors (i.e.
 #'   errors not wrapped in `safeError`) won't show up in the app; a simple
-#'   generic error message is printed instead (the error and stack trace printed
+#'   generic error message is printed instead (the error and strack trace printed
 #'   to the console remain unchanged). If you want to sanitize errors in general, but you DO want a
 #'   particular error `e` to get displayed to the user, then set this option
 #'   to `TRUE` and use `stop(safeError(e))` for errors you want the
@@ -134,9 +125,6 @@ getShinyOption <- function(name, default = NULL) {
 #'   console.}
 #' \item{shiny.testmode (defaults to `FALSE`)}{If `TRUE`, then various features for testing Shiny
 #'   applications are enabled.}
-#' \item{shiny.snapshotsortc (defaults to `FALSE`)}{If `TRUE`, test snapshot keys
-#'   for \pkg{shinytest} will be sorted consistently using the C locale.  Snapshots
-#'   retrieved by \pkg{shinytest2} will always sort using the C locale.}
 #' \item{shiny.trace (defaults to `FALSE`)}{Print messages sent between the R server and the web
 #'   browser client to the R console. This is useful for debugging. Possible
 #'   values are `"send"` (only print messages sent to the client),
@@ -145,21 +133,9 @@ getShinyOption <- function(name, default = NULL) {
 #'   messages).}
 #' \item{shiny.autoload.r (defaults to `TRUE`)}{If `TRUE`, then the R/
 #'   of a shiny app will automatically be sourced.}
-#' \item{shiny.useragg (defaults to `TRUE`)}{Set to `FALSE` to prevent PNG rendering via the
-#'   ragg package. See [plotPNG()] for more information.}
-#' \item{shiny.usecairo (defaults to `TRUE`)}{Set to `FALSE` to prevent PNG rendering via the
-#'   Cairo package. See [plotPNG()] for more information.}
-#' \item{shiny.devmode (defaults to `NULL`)}{Option to enable Shiny Developer Mode. When set,
-#'   different default `getOption(key)` values will be returned. See [devmode()] for more details.}
-### Not documenting as 'shiny.devmode.verbose' is for niche use only
-# ' \item{shiny.devmode.verbose (defaults to `TRUE`)}{If `TRUE`, will display messages printed
-# '   about which options are being set. See [devmode()] for more details. }
-### (end not documenting 'shiny.devmode.verbose')
-### start shiny.client_devmode is primarily for niche, internal shinylive usage
-# ' \item{shiny.client_devmode (defaults to `FALSE`)}{If `TRUE`, enables client-
-# '  side devmode features. Currently the primary feature is the client-side
-# '  error console.}
-### end shiny.client_devmode
+#' \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.}
 #' }
 #'
 #'
@@ -196,7 +172,7 @@ getShinyOption <- function(name, default = NULL) {
 #' @aliases shiny-options
 #' @export
 shinyOptions <- function(...) {
-  newOpts <- list2(...)
+  newOpts <- list(...)
 
   if (length(newOpts) > 0) {
     # If we're within a session, modify at the session level.

R/shiny-package.R

@@ -1,43 +0,0 @@
-# See also R/reexports.R
-
-## usethis namespace: start
-#' @importFrom lifecycle deprecated is_present
-#' @importFrom grDevices dev.set dev.cur
-#' @importFrom fastmap fastmap
-#' @importFrom promises %...!%
-#' @importFrom promises %...>%
-#' @importFrom promises
-#'    promise promise_resolve promise_reject is.promising
-#'    as.promise
-#' @importFrom rlang
-#'    quo enquo enquo0 as_function get_expr get_env new_function enquos
-#'    eval_tidy expr pairlist2 new_quosure enexpr as_quosure is_quosure inject
-#'    quo_set_env quo_set_expr quo_get_expr
-#'    enquos0 zap_srcref %||% is_na
-#'    is_false list2
-#'    missing_arg is_missing maybe_missing
-#'    quo_is_missing fn_fmls<- fn_body fn_body<-
-#'    check_dots_empty check_dots_unnamed
-#' @import htmltools
-#' @import httpuv
-#' @import xtable
-#' @import R6
-#' @import mime
-## usethis namespace: end
-NULL
-
-# It's necessary to Depend on methods so Rscript doesn't fail. It's necessary
-# to import(methods) in NAMESPACE so R CMD check doesn't complain. This
-# approach isn't foolproof because Rscript -e pkgname::func() doesn't actually
-# cause methods to be attached, but it's not a problem for shiny::runApp()
-# since we call require(shiny) as part of loading the app.
-#' @import methods
-NULL
-
-
-# For usethis::use_release_issue()
-release_bullets <- function() {
-  c(
-    "Update static imports: `staticimports::import()`"
-  )
-}

R/shiny.R

@@ -1,4 +1,4 @@
-#' @include utils.R
+#' @include utils.R stack.R
 NULL
 
 #' Web Application Framework for R
@@ -8,7 +8,7 @@ NULL
 #' prebuilt widgets make it possible to build beautiful, responsive, and
 #' powerful applications with minimal effort.
 #'
-#' The Shiny tutorial at <https://shiny.rstudio.com/tutorial/> explains
+#' The Shiny tutorial at <http://shiny.rstudio.com/tutorial/> explains
 #' the framework in depth, walks you through building a simple application, and
 #' includes extensive annotated examples.
 #'
@@ -16,7 +16,26 @@ NULL
 #'
 #' @name shiny-package
 #' @aliases shiny
-"_PACKAGE"
+#' @docType package
+#' @import htmltools httpuv xtable digest R6 mime
+NULL
+
+# It's necessary to Depend on methods so Rscript doesn't fail. It's necessary
+# to import(methods) in NAMESPACE so R CMD check doesn't complain. This
+# approach isn't foolproof because Rscript -e pkgname::func() doesn't actually
+# cause methods to be attached, but it's not a problem for shiny::runApp()
+# since we call require(shiny) as part of loading the app.
+#' @import methods
+NULL
+
+#' @importFrom digest digest
+#' @importFrom promises promise promise_resolve promise_reject is.promising
+#'   as.promise
+#' @importFrom rlang quo enquo as_function get_expr get_env new_function enquos
+#'   eval_tidy expr pairlist2 new_quosure enexpr as_quosure is_quosure inject
+#'   enquos0 zap_srcref %||% is_na
+#' @importFrom ellipsis check_dots_empty check_dots_unnamed
+NULL
 
 createUniqueId <- function(bytes, prefix = "", suffix = "") {
   withPrivateSeed({
@@ -32,12 +51,8 @@ createUniqueId <- function(bytes, prefix = "", suffix = "") {
 }
 
 toJSON <- function(x, ...,  dataframe = "columns", null = "null", na = "null",
-  auto_unbox = TRUE,
-  # Shiny has had a legacy value of 16 significant digits
-  # We can use `I(16)` mixed with the default behavior in jsonlite's `use_signif=`
-  # https://github.com/jeroen/jsonlite/commit/728efa9
-  digits = getOption("shiny.json.digits", I(16)), use_signif = is(digits, "AsIs"),
-  force = TRUE, POSIXt = "ISO8601", UTC = TRUE,
+  auto_unbox = TRUE, digits = getOption("shiny.json.digits", 16),
+  use_signif = TRUE, force = TRUE, POSIXt = "ISO8601", UTC = TRUE,
   rownames = FALSE, keep_vec_names = TRUE, strict_atomic = TRUE) {
 
   if (strict_atomic) {
@@ -188,24 +203,14 @@ workerId <- local({
 #'   session is actually connected.
 #' }
 #' \item{request}{
-#'   An environment that implements the [Rook
-#'   specification](https://github.com/jeffreyhorner/Rook#the-environment) for
-#'   HTTP requests. This is the request that was used to initiate the websocket
-#'   connection (as opposed to the request that downloaded the web page for the
-#'   app).
+#'   An environment that implements the Rook specification for HTTP requests.
+#'   This is the request that was used to initiate the websocket connection
+#'   (as opposed to the request that downloaded the web page for the app).
 #' }
 #' \item{userData}{
 #'   An environment for app authors and module/package authors to store whatever
 #'   session-specific data they want.
 #' }
-#' \item{user}{
-#'   User's log-in information. Useful for identifying users on hosted platforms
-#'   such as RStudio Connect and Shiny Server.
-#' }
-#' \item{groups}{
-#'   The `user`'s relevant group information. Useful for determining what
-#'   privileges the user should or shouldn't have.
-#' }
 #' \item{resetBrush(brushId)}{
 #'   Resets/clears the brush with the given `brushId`, if it exists on
 #'   any `imageOutput` or `plotOutput` in the app.
@@ -214,7 +219,7 @@ workerId <- local({
 #'   Sends a custom message to the web page. `type` must be a
 #'   single-element character vector giving the type of message, while
 #'   `message` can be any jsonlite-encodable value. Custom messages
-#'   have no meaning to Shiny itself; they are used solely to convey information
+#'   have no meaning to Shiny itself; they are used soley to convey information
 #'   to custom JavaScript logic in the browser. You can do this by adding
 #'   JavaScript code to the browser that calls
 #'   \code{Shiny.addCustomMessageHandler(type, function(message){...})}
@@ -293,7 +298,7 @@ NULL
 #'
 #' The `NS` function creates namespaced IDs out of bare IDs, by joining
 #' them using `ns.sep` as the delimiter. It is intended for use in Shiny
-#' modules. See <https://shiny.rstudio.com/articles/modules.html>.
+#' modules. See <http://shiny.rstudio.com/articles/modules.html>.
 #'
 #' Shiny applications use IDs to identify inputs and outputs. These IDs must be
 #' unique within an application, as accidentally using the same input/output ID
@@ -310,7 +315,7 @@ NULL
 #' @param id The id string to be namespaced (optional).
 #' @return If `id` is missing, returns a function that expects an id string
 #'   as its only argument and returns that id with the namespace prepended.
-#' @seealso <https://shiny.rstudio.com/articles/modules.html>
+#' @seealso <http://shiny.rstudio.com/articles/modules.html>
 #' @export
 NS <- function(namespace, id = NULL) {
   if (length(namespace) == 0)
@@ -348,8 +353,8 @@ ShinySession <- R6Class(
     websocket = 'ANY',
     invalidatedOutputValues = 'Map',
     invalidatedOutputErrors = 'Map',
-    inputMessageQueue = 'fastqueue',     # A list of inputMessages to send when flushed
-    cycleStartActionQueue = 'fastqueue', # A list of actions to perform to start a cycle
+    inputMessageQueue = list(), # A list of inputMessages to send when flushed
+    cycleStartActionQueue = list(), # A list of actions to perform to start a cycle
     .outputs = list(),          # Keeps track of all the output observer objects
     .outputOptions = list(),     # Options for each of the output observer objects
     progressKeys = 'character',
@@ -362,7 +367,6 @@ ShinySession <- R6Class(
     flushCallbacks = 'Callbacks',
     flushedCallbacks = 'Callbacks',
     inputReceivedCallbacks = 'Callbacks',
-    unhandledErrorCallbacks = 'Callbacks',
     bookmarkCallbacks = 'Callbacks',
     bookmarkedCallbacks = 'Callbacks',
     restoreCallbacks = 'Callbacks',
@@ -409,7 +413,7 @@ ShinySession <- R6Class(
     sendMessage = function(...) {
       # This function is a wrapper for $write
       msg <- list(...)
-      if (any_unnamed(msg)) {
+      if (anyUnnamed(msg)) {
         stop("All arguments to sendMessage must be named.")
       }
       private$write(toJSON(msg))
@@ -484,35 +488,6 @@ ShinySession <- R6Class(
           # "json" unless requested otherwise. The only other valid value is
           # "rds".
           format <- params$format %||% "json"
-          # Machines can test their snapshot under different locales.
-          # R CMD check runs under the `C` locale.
-          # However, before this parameter, existing snapshots were most likely not
-          #   under the `C` locale is would cause failures. This parameter allows
-          #   users to opt-in to the `C` locale.
-          # From ?sort:
-          #   However, there are some caveats with the radix sort:
-          #     If ‘x’ is a ‘character’ vector, all elements must share the
-          #   same encoding. Only UTF-8 (including ASCII) and Latin-1
-          #   encodings are supported. Collation always follows the "C"
-          #   locale.
-          # {shinytest2} will always set `sortC=1`
-          # {shinytest} does not have `sortC` functionality.
-          #    Users should set `options(shiny.snapshotsortc = TRUE)` within their app.
-          # The sortingMethod should always be `radix` going forward.
-          sortMethod <-
-            if (!is.null(params$sortC)) {
-              if (params$sortC != "1") {
-                stop("The `sortC` parameter can only be `1` or not supplied")
-              }
-              "radix"
-            } else {
-              # Allow users to set an option for {shinytest2}.
-              if (isTRUE(getShinyOption("snapshotsortc", default = FALSE))) {
-                "radix"
-              } else {
-                "auto"
-              }
-            }
 
           values <- list()
 
@@ -555,7 +530,7 @@ ShinySession <- R6Class(
               }
             )
 
-            values$input <- sortByName(values$input, method = sortMethod)
+            values$input <- sortByName(values$input)
           }
 
           if (!is.null(params$output)) {
@@ -583,7 +558,7 @@ ShinySession <- R6Class(
               }
             )
 
-            values$output <- sortByName(values$output, method = sortMethod)
+            values$output <- sortByName(values$output)
           }
 
           if (!is.null(params$export)) {
@@ -604,7 +579,7 @@ ShinySession <- R6Class(
               )
             }
 
-            values$export <- sortByName(values$export, method = sortMethod)
+            values$export <- sortByName(values$export)
           }
 
           # Make sure input, output, and export are all named lists (at this
@@ -657,8 +632,9 @@ ShinySession <- R6Class(
     startCycle = function() {
       # TODO: This should check for busyCount == 0L, and remove the checks from
       # the call sites
-      if (private$cycleStartActionQueue$size() > 0) {
-        head <- private$cycleStartActionQueue$remove()
+      if (private$busyCount == 0L && length(private$cycleStartActionQueue) > 0) {
+        head <- private$cycleStartActionQueue[[1L]]
+        private$cycleStartActionQueue <- private$cycleStartActionQueue[-1L]
 
         # After we execute the current cycleStartAction (head), there may be
         # more items left on the queue. If the current busyCount > 0, then that
@@ -677,13 +653,7 @@ ShinySession <- R6Class(
         # busyCount, it's possible we're calling startCycle spuriously; that's
         # OK, it's essentially a no-op in that case.
         on.exit({
-          if (private$busyCount == 0L && private$cycleStartActionQueue$size() > 0L) {
-            later::later(function() {
-              if (private$busyCount == 0L) {
-                private$startCycle()
-              }
-            })
-          }
+          later::later(private$startCycle)
         }, add = TRUE)
 
         head()
@@ -715,8 +685,6 @@ ShinySession <- R6Class(
       self$closed <- FALSE
       # TODO: Put file upload context in user/app-specific dir if possible
 
-      private$inputMessageQueue     <- fastmap::fastqueue()
-      private$cycleStartActionQueue <- fastmap::fastqueue()
       private$invalidatedOutputValues <- Map$new()
       private$invalidatedOutputErrors <- Map$new()
       private$fileUploadContext <- FileUploadContext$new()
@@ -724,11 +692,10 @@ ShinySession <- R6Class(
       private$flushCallbacks <- Callbacks$new()
       private$flushedCallbacks <- Callbacks$new()
       private$inputReceivedCallbacks <- Callbacks$new()
-      private$unhandledErrorCallbacks <- Callbacks$new()
       private$.input      <- ReactiveValues$new(dedupe = FALSE, label = "input")
       private$.clientData <- ReactiveValues$new(dedupe = TRUE, label = "clientData")
       private$timingRecorder <- ShinyServerTimingRecorder$new()
-      self$progressStack <- fastmap::faststack()
+      self$progressStack <- Stack$new()
       self$files <- Map$new()
       self$downloads <- Map$new()
       self$userData <- new.env(parent = emptyenv())
@@ -755,12 +722,7 @@ ShinySession <- R6Class(
       private$testMode <- getShinyOption("testmode", default = FALSE)
       private$enableTestSnapshot()
 
-      # This `withReactiveDomain` is used only to satisfy the reactlog, so that
-      # it knows to scope this reactiveVal to this session.
-      # https://github.com/rstudio/shiny/pull/3182
-      withReactiveDomain(self,
-        private$currentThemeDependency <- reactiveVal(0, label = "Theme Counter")
-      )
+      private$currentThemeDependency <- reactiveVal(0)
 
       private$registerSessionEndCallbacks()
 
@@ -861,7 +823,7 @@ ShinySession <- R6Class(
             dots <- eval(substitute(alist(...)))
           }
 
-          if (any_unnamed(dots))
+          if (anyUnnamed(dots))
             stop("exportTestValues: all arguments must be named.")
 
           names(dots) <- ns(names(dots))
@@ -949,7 +911,7 @@ ShinySession <- R6Class(
 
         # Copy `values` from scopeState to state, adding namespace
         if (length(scopeState$values) != 0) {
-          if (any_unnamed(scopeState$values)) {
+          if (anyUnnamed(scopeState$values)) {
             stop("All scope values in must be named.")
           }
 
@@ -1045,21 +1007,8 @@ ShinySession <- R6Class(
       new data from the client."
       return(private$inputReceivedCallbacks$register(callback))
     },
-    onUnhandledError = function(callback) {
-      "Registers the callback to be invoked when an unhandled error occurs."
-      return(private$unhandledErrorCallbacks$register(callback))
-    },
-    unhandledError = function(e, close = TRUE) {
-      "Call the global and session unhandled error handlers and then close the
-       session if the error is fatal."
-      if (close) {
-        class(e) <- c("shiny.error.fatal", class(e))
-      }
-
-      private$unhandledErrorCallbacks$invoke(e, onError = printError)
-      .globals$onUnhandledErrorCallbacks$invoke(e, onError = printError)
-
-      if (close) self$close()
+    unhandledError = function(e) {
+      self$close()
     },
     close = function() {
       if (!self$closed) {
@@ -1163,14 +1112,7 @@ ShinySession <- R6Class(
                   structure(list(), class = "try-error", condition = cond)
                 } else if (inherits(cond, "shiny.output.cancel")) {
                   structure(list(), class = "cancel-output")
-                } else if (inherits(cond, "shiny.output.progress")) {
-                  structure(list(), class = "progress-output")
-                } else if (cnd_inherits(cond, "shiny.silent.error")) {
-                  # The error condition might have been chained by
-                  # foreign code, e.g. dplyr. Find the original error.
-                  while (!inherits(cond, "shiny.silent.error")) {
-                    cond <- cond$parent
-                  }
+                } else if (inherits(cond, "shiny.silent.error")) {
                   # Don't let shiny.silent.error go through the normal stop
                   # path of try, because we don't want it to print. But we
                   # do want to try to return the same looking result so that
@@ -1183,7 +1125,6 @@ ShinySession <- R6Class(
                       "logs or contact the app author for",
                       "clarification."))
                   }
-                  self$unhandledError(cond, close = FALSE)
                   invisible(structure(list(), class = "try-error", condition = cond))
                 }
               }
@@ -1194,33 +1135,6 @@ ShinySession <- R6Class(
               # client knows that progress is over.
               self$requestFlush()
 
-              if (inherits(value, "progress-output")) {
-                # This is the case where an output needs to compute for longer
-                # than this reactive flush. We put the output into progress mode
-                # (i.e. adding .recalculating) with a special flag that means
-                # the progress indication should not be cleared until this
-                # specific output receives a new value or error.
-                self$showProgress(name, persistent=TRUE)
-
-                # It's conceivable that this output already ran successfully
-                # within this reactive flush, in which case we could either show
-                # the new output while simultaneously making it .recalculating;
-                # or we squelch the new output and make whatever output is in
-                # the client .recalculating. I (jcheng) decided on the latter as
-                # it seems more in keeping with what we do with these kinds of
-                # intermediate output values/errors in general, i.e. ignore them
-                # and wait until we have a final answer. (Also kind of feels
-                # like a bug in the app code if you routinely have outputs that
-                # are executing successfully, only to be invalidated again
-                # within the same reactive flush--use priority to fix that.)
-                private$invalidatedOutputErrors$remove(name)
-                private$invalidatedOutputValues$remove(name)
-
-                # It's important that we return so that the existing output in
-                # the client remains untouched.
-                return()
-              }
-
               private$sendMessage(recalculating = list(
                 name = name, status = 'recalculated'
               ))
@@ -1262,10 +1176,7 @@ ShinySession <- R6Class(
           private$.outputOptions[[name]] <- list()
       }
       else {
-        rlang::abort(c(
-          paste0("Unexpected ", class(func)[[1]], " object for output$", name),
-          i = "Did you forget to use a render function?"
-        ))
+        stop(paste("Unexpected", class(func), "output for", name))
       }
     },
     getOutput = function(name) {
@@ -1295,7 +1206,7 @@ ShinySession <- R6Class(
           length(private$progressKeys) != 0 ||
           length(private$invalidatedOutputValues) != 0 ||
           length(private$invalidatedOutputErrors) != 0 ||
-          private$inputMessageQueue$size() != 0
+          length(private$inputMessageQueue) != 0
         )
       }
 
@@ -1327,8 +1238,8 @@ ShinySession <- R6Class(
         private$invalidatedOutputValues <- Map$new()
         errors <- as.list(private$invalidatedOutputErrors)
         private$invalidatedOutputErrors <- Map$new()
-        inputMessages <- private$inputMessageQueue$as_list()
-        private$inputMessageQueue$reset()
+        inputMessages <- private$inputMessageQueue
+        private$inputMessageQueue <- list()
 
         if (isTRUE(private$testMode)) {
           private$storeOutputValues(mergeVectors(values, errors))
@@ -1346,36 +1257,30 @@ ShinySession <- R6Class(
     # does not guarantee) inputs and reactive values from changing underneath
     # async observers as they run.
     cycleStartAction = function(callback) {
-      private$cycleStartActionQueue$add(callback)
+      private$cycleStartActionQueue <- c(private$cycleStartActionQueue, list(callback))
       # If no observers are running in this session, we're safe to proceed.
       # Otherwise, startCycle() will be called later, via decrementBusyCount().
       if (private$busyCount == 0L) {
         private$startCycle()
       }
     },
-    showProgress = function(id, persistent=FALSE) {
+    showProgress = function(id) {
       'Send a message to the client that recalculation of the output identified
       by \\code{id} is in progress. There is currently no mechanism for
       explicitly turning off progress for an output component; instead, all
-      progress is implicitly turned off when flushOutput is next called.
-
-      You can use persistent=TRUE if the progress for this output component
-      should stay on beyond the flushOutput (or any subsequent flushOutputs); in
-      that case, progress is only turned off (and the persistent flag cleared)
-      when the output component receives a value or error, or, if
-      showProgress(id, persistent=FALSE) is called and a subsequent flushOutput
-      occurs.'
+      progress is implicitly turned off when flushOutput is next called.'
 
       # If app is already closed, be sure not to show progress, otherwise we
       # will get an error because of the closed websocket
       if (self$closed)
         return()
 
-      if (!id %in% private$progressKeys) {
-        private$progressKeys <- c(private$progressKeys, id)
-      }
+      if (id %in% private$progressKeys)
+        return()
 
-      self$sendProgress('binding', list(id = id, persistent = persistent))
+      private$progressKeys <- c(private$progressKeys, id)
+
+      self$sendProgress('binding', list(id = id))
     },
     sendProgress = function(type, message) {
       private$sendMessage(
@@ -1395,7 +1300,7 @@ ShinySession <- R6Class(
 
     getCurrentTheme = function() {
       private$currentThemeDependency()
-      getCurrentTheme()
+      getShinyOption("bootstrapTheme")
     },
 
     setCurrentTheme = function(theme) {
@@ -1403,25 +1308,8 @@ ShinySession <- R6Class(
       # bootstrapTheme, (2) re-executes any registered theme dependencies, and
       # (3) sends the resulting dependencies to the client.
 
-      if (!is_bs_theme(theme)) {
-        stop("`session$setCurrentTheme()` expects a `bslib::bs_theme()` object.", call. = FALSE)
-      }
-
-      # Switching Bootstrap versions has weird & complex consequences
-      # for the JS logic, so we forbid it
-      current_version <- bslib::theme_version(getCurrentTheme())
-      next_version <- bslib::theme_version(theme)
-      if (!identical(current_version, next_version)) {
-        stop(
-          "session$setCurrentTheme() cannot be used to change the Bootstrap version ",
-          "from ", current_version, " to ", next_version, ". ",
-          "Try using `bs_theme(version = ", next_version, ")` for initial theme.",
-          call. = FALSE
-        )
-      }
-
       # Note that this will automatically scope to the session.
-      setCurrentTheme(theme)
+      shinyOptions(bootstrapTheme = theme)
 
       # Invalidate
       private$currentThemeDependency(isolate(private$currentThemeDependency()) + 1)
@@ -1483,7 +1371,8 @@ ShinySession <- R6Class(
     sendInputMessage = function(inputId, message) {
       data <- list(id = inputId, message = message)
 
-      private$inputMessageQueue$add(data)
+      # Add to input message queue
+      private$inputMessageQueue[[length(private$inputMessageQueue) + 1]] <- data
       # Needed so that Shiny knows to actually flush the input message queue
       self$requestFlush()
     },
@@ -1581,7 +1470,7 @@ ShinySession <- R6Class(
           # invocation of getCurrentOutputInfo()$width() and saves it; future
           # invocations of getCurrentOutputInfo()$width() use the existing
           # reactive and save it.
-          tmp_info[[prop]] <<- function() {
+          tmp_info[[prop]] <- function() {
             if (is.null(r)) {
               r <<- reactive(label = prop_name, {
                 wrapfun(self$clientData[[prop_name]])
@@ -1791,7 +1680,7 @@ ShinySession <- R6Class(
         dots <- eval(substitute(alist(...)))
       }
 
-      if (any_unnamed(dots))
+      if (anyUnnamed(dots))
         stop("exportTestValues: all arguments must be named.")
 
       # Create a named list where each item is a list with an expression and
@@ -1804,7 +1693,7 @@ ShinySession <- R6Class(
     },
 
     getTestSnapshotUrl = function(input = TRUE, output = TRUE, export = TRUE,
-                                  format = "json", sortC = FALSE) {
+                                  format = "json") {
       reqString <- function(group, value) {
         if (isTRUE(value))
           paste0(group, "=1")
@@ -1818,7 +1707,6 @@ ShinySession <- R6Class(
         reqString("input", input),
         reqString("output", output),
         reqString("export", export),
-        reqString("sortC", sortC),
         paste0("format=", format),
         sep = "&"
       )
@@ -2024,7 +1912,7 @@ ShinySession <- R6Class(
         tmpdata <- tempfile(fileext = ext)
         return(Context$new(getDefaultReactiveDomain(), '[download]')$run(function() {
           promises::with_promise_domain(reactivePromiseDomain(), {
-            captureStackTraces({
+            promises::with_promise_domain(createStackTracePromiseDomain(), {
               self$incrementBusyCount()
               hybrid_chain(
                 # ..stacktraceon matches with the top-level ..stacktraceoff..
@@ -2159,19 +2047,6 @@ ShinySession <- R6Class(
         self$cycleStartAction(doManageInputs)
       }
     },
-    removeInputs = function(inputIds) {
-      is_clientdata <- grepl("^.clientdata_", inputIds)
-      if (any(is_clientdata)) {
-        abort(
-          "Cannot remove clientData inputs: ",
-          paste(inputIds[is_clientdata], collapse = ", ")
-        )
-      }
-      
-      for (inputId in inputIds) {
-        private$.input$remove(inputId)
-      }
-    },
     outputOptions = function(name, ...) {
       # If no name supplied, return the list of options for all outputs
       if (is.null(name))
@@ -2231,6 +2106,16 @@ ShinySession <- R6Class(
         })
       }
     }
+  ),
+  active = list(
+    session = function() {
+      shinyDeprecated(
+        msg = paste("Attempted to access deprecated shinysession$session object.",
+                    "Please just access the shinysession object directly."),
+        version = "0.11.1"
+      )
+      self
+    }
   )
 )
 
@@ -2267,7 +2152,7 @@ ShinySession <- R6Class(
   if (getOption("shiny.allowoutputreads", FALSE)) {
     .subset2(x, 'impl')$getOutput(name)
   } else {
-    rlang::abort(paste0("Can't read output '", name, "'"))
+    stop("Reading from shinyoutput object is not allowed.")
   }
 }
 
@@ -2276,12 +2161,12 @@ ShinySession <- R6Class(
 
 #' @export
 `[.shinyoutput` <- function(values, name) {
-  rlang::abort("Can't index shinyoutput with `[`.")
+  stop("Single-bracket indexing of shinyoutput object is not allowed.")
 }
 
 #' @export
 `[<-.shinyoutput` <- function(values, name, value) {
-  rlang::abort("Can't index shinyoutput with `[[`.")
+  stop("Single-bracket indexing of shinyoutput object is not allowed.")
 }
 
 #' Set options for an output object.
@@ -2398,89 +2283,23 @@ getCurrentOutputInfo <- function(session = getDefaultReactiveDomain()) {
 
 #' Add callbacks for Shiny session events
 #'
-#' @description
 #' These functions are for registering callbacks on Shiny session events.
-#' `onFlush` registers a function that will be called before Shiny flushes the
-#' reactive system. `onFlushed` registers a function that will be called after
-#' Shiny flushes the reactive system. `onUnhandledError` registers a function to
-#' be called when an unhandled error occurs before the session is closed.
-#' `onSessionEnded` registers a function to be called after the client has
-#' disconnected.
+#' `onFlush` registers a function that will be called before Shiny flushes
+#' the reactive system. `onFlushed` registers a function that will be
+#' called after Shiny flushes the reactive system. `onSessionEnded`
+#' registers a function to be called after the client has disconnected.
 #'
 #' These functions should be called within the application's server function.
 #'
 #' All of these functions return a function which can be called with no
 #' arguments to cancel the registration.
 #'
-#' @section Unhandled Errors:
-#' Unhandled errors are errors that aren't otherwise handled by Shiny or by the
-#' application logic. In other words, they are errors that will either cause the
-#' application to crash or will result in "Error" output in the UI.
-#'
-#' You can use `onUnhandledError()` to register a function that will be called
-#' when an unhandled error occurs. This function will be called with the error
-#' object as its first argument. If the error is fatal and will result in the
-#' session closing, the error condition will have the `shiny.error.fatal` class.
-#'
-#' Note that the `onUnhandledError()` callbacks cannot be used to prevent the
-#' app from closing or to modify the error condition. Instead, they are intended
-#' to give you an opportunity to log the error or perform other cleanup
-#' operations.
-#'
 #' @param fun A callback function.
 #' @param once Should the function be run once, and then cleared, or should it
 #'   re-run each time the event occurs. (Only for `onFlush` and
 #'   `onFlushed`.)
 #' @param session A shiny session object.
 #'
-#' @examplesIf interactive()
-#' library(shiny)
-#'
-#' ui <- fixedPage(
-#'   markdown(c(
-#'     "Set the number to 8 or higher to cause an error",
-#'     "in the `renderText()` output."
-#'   )),
-#'   sliderInput("number", "Number", 0, 10, 4),
-#'   textOutput("text"),
-#'   hr(),
-#'   markdown(c(
-#'     "Click the button below to crash the app with an unhandled error",
-#'     "in an `observe()` block."
-#'   )),
-#'   actionButton("crash", "Crash the app!")
-#' )
-#'
-#' log_event <- function(level, ...) {
-#'   ts <- strftime(Sys.time(), " [%F %T] ")
-#'   message(level, ts, ...)
-#' }
-#'
-#' server <- function(input, output, session) {
-#'   log_event("INFO", "Session started")
-#'
-#'   onUnhandledError(function(err) {
-#'     # log the unhandled error
-#'     level <- if (inherits(err, "shiny.error.fatal")) "FATAL" else "ERROR"
-#'     log_event(level, conditionMessage(err))
-#'   })
-#'
-#'   onStop(function() {
-#'     log_event("INFO", "Session ended")
-#'   })
-#'
-#'   observeEvent(input$crash, stop("Oops, an unhandled error happened!"))
-#'
-#'   output$text <- renderText({
-#'     if (input$number > 7) {
-#'       stop("that's too high!")
-#'     }
-#'     sprintf("You picked number %d.", input$number)
-#'   })
-#' }
-#'
-#' shinyApp(ui, server)
-#'
 #' @export
 onFlush <- function(fun, once = TRUE, session = getDefaultReactiveDomain()) {
   session$onFlush(fun, once = once)
@@ -2501,27 +2320,6 @@ onSessionEnded <- function(fun, session = getDefaultReactiveDomain()) {
   session$onSessionEnded(fun)
 }
 
-.globals$onUnhandledErrorCallbacks <- NULL
-on_load({
-  .globals$onUnhandledErrorCallbacks <- Callbacks$new()
-})
-
-#' @rdname onFlush
-#' @export
-onUnhandledError <- function(fun, session = getDefaultReactiveDomain()) {
-  if (!is.function(fun) || length(formals(fun)) == 0) {
-    rlang::abort(
-      "The unhandled error callback must be a function that takes an error object as its first argument."
-    )
-  }
-
-  if (is.null(session)) {
-    .globals$onUnhandledErrorCallbacks$register(fun)
-  } else {
-    session$onUnhandledError(fun)
-  }
-}
-
 
 flushPendingSessions <- function() {
   lapply(appsNeedingFlush$values(), function(shinysession) {
@@ -2720,19 +2518,3 @@ markdown <- function(mds, extensions = TRUE, .noWS = NULL, ...) {
   html <- rlang::exec(commonmark::markdown_html, glue::trim(mds), extensions = extensions, ...)
   htmltools::HTML(html, .noWS = .noWS)
 }
-
-
-# Check that an object is a ShinySession object, and give an informative error.
-# The default label is the caller function's name.
-validate_session_object <- function(session, label = as.character(sys.call(sys.parent())[[1]])) {
-  if (missing(session) ||
-      !inherits(session, c("ShinySession", "MockShinySession", "session_proxy")))
-  {
-    stop(call. = FALSE,
-      sprintf(
-        "`session` must be a 'ShinySession' object. Did you forget to pass `session` to `%s()`?",
-        label
-      )
-    )
-  }
-}

R/shinyapp.R

@@ -113,10 +113,7 @@ shinyApp <- function(ui, server, onStart=NULL, options=list(),
 #' @export
 shinyAppDir <- function(appDir, options=list()) {
   if (!utils::file_test('-d', appDir)) {
-    rlang::abort(
-      paste0("No Shiny application exists at the path \"", appDir, "\""),
-      class = "invalidShinyAppDir"
-    )
+    stop("No Shiny application exists at the path \"", appDir, "\"")
   }
 
   # In case it's a relative path, convert to absolute (so we're not adversely
@@ -128,10 +125,7 @@ shinyAppDir <- function(appDir, options=list()) {
   } else if (file.exists.ci(appDir, "app.R")) {
     shinyAppDir_appR("app.R", appDir, options = options)
   } else {
-    rlang::abort(
-      "App dir must contain either app.R or server.R.",
-      class = "invalidShinyAppDir"
-    )
+    stop("App dir must contain either app.R or server.R.")
   }
 }
 
@@ -162,29 +156,11 @@ shinyAppDir_serverR <- function(appDir, options=list()) {
     sharedEnv <- globalenv()
   }
 
-  # To enable hot-reloading of support files, this function is called
-  # whenever the UI or Server func source is updated. To avoid loading
-  # support files 2x, we follow the last cache update trigger timestamp.
-  autoload_r_support_if_needed <- local({
-    autoload_last_loaded <- -1
-    function() {
-      if (!isTRUE(getOption("shiny.autoload.r", TRUE))) return()
-      
-      last_cache_trigger <- cachedAutoReloadLastChanged$get()
-      if (identical(autoload_last_loaded, last_cache_trigger)) return()
-
-      loadSupport(appDir, renv = sharedEnv, globalrenv = globalenv())
-
-      autoload_last_loaded <<- last_cache_trigger
-    }
-  })
-
   # uiHandlerSource is a function that returns an HTTP handler for serving up
   # ui.R as a webpage. The "cachedFuncWithFile" call makes sure that the closure
   # we're creating here only gets executed when ui.R's contents change.
   uiHandlerSource <- cachedFuncWithFile(appDir, "ui.R", case.sensitive = FALSE,
     function(uiR) {
-      autoload_r_support_if_needed()
       if (file.exists(uiR)) {
         # If ui.R contains a call to shinyUI (which sets .globals$ui), use that.
         # If not, then take the last expression that's returned from ui.R.
@@ -211,11 +187,10 @@ shinyAppDir_serverR <- function(appDir, options=list()) {
     staticPaths <- list()
   }
 
-  fallbackWWWDir <- system_file("www-dir", package = "shiny")
+  fallbackWWWDir <- system.file("www-dir", package = "shiny")
 
   serverSource <- cachedFuncWithFile(appDir, "server.R", case.sensitive = FALSE,
     function(serverR) {
-      autoload_r_support_if_needed()
       # If server.R contains a call to shinyServer (which sets .globals$server),
       # use that. If not, then take the last expression that's returned from
       # server.R.
@@ -251,9 +226,10 @@ shinyAppDir_serverR <- function(appDir, options=list()) {
   onStart <- function() {
     oldwd <<- getwd()
     setwd(appDir)
+    # TODO: we should support hot reloading on global.R and R/*.R changes.
     if (getOption("shiny.autoload.r", TRUE)) {
-      autoload_r_support_if_needed()
-    } else {
+      loadSupport(appDir, renv=sharedEnv, globalrenv=globalenv())
+    }  else {
       if (file.exists(file.path.ci(appDir, "global.R")))
         sourceUTF8(file.path.ci(appDir, "global.R"))
     }
@@ -304,81 +280,37 @@ shinyAppDir_serverR <- function(appDir, options=list()) {
 #
 # The return value is a function that halts monitoring when called.
 initAutoReloadMonitor <- function(dir) {
-  if (!get_devmode_option("shiny.autoreload", FALSE)) {
+  if (!getOption("shiny.autoreload", FALSE)) {
     return(function(){})
   }
 
-  filePattern <- getOption(
-    "shiny.autoreload.pattern",
-    ".*\\.(r|html?|js|css|png|jpe?g|gif)$"
-  )
+  filePattern <- getOption("shiny.autoreload.pattern",
+    ".*\\.(r|html?|js|css|png|jpe?g|gif)$")
 
-  
-  if (is_installed("watcher")) {
-    check_for_update <- function(paths) {
-      paths <- grep(
-        filePattern,
-        paths,
-        ignore.case = TRUE,
-        value = TRUE
-      )
-      
-      if (length(paths) == 0) {
-        return()
-      }
-      
-      cachedAutoReloadLastChanged$set()
+  lastValue <- NULL
+  observeLabel <- paste0("File Auto-Reload - '", basename(dir), "'")
+  obs <- observe(label = observeLabel, {
+    files <- sort_c(
+      list.files(dir, pattern = filePattern, recursive = TRUE, ignore.case = TRUE)
+    )
+    times <- file.info(files)$mtime
+    names(times) <- files
+
+    if (is.null(lastValue)) {
+      # First run
+      lastValue <<- times
+    } else if (!identical(lastValue, times)) {
+      # We've changed!
+      lastValue <<- times
       autoReloadCallbacks$invoke()
     }
-    
-    # [garrick, 2025-02-20] Shiny <= v1.10.0 used `invalidateLater()` with an
-    # autoreload.interval in ms. {watcher} instead uses a latency parameter in
-    # seconds, which serves a similar purpose and that I'm keeping for backcompat.
-    latency <- getOption("shiny.autoreload.interval", 250) / 1000
-    watcher <- watcher::watcher(dir, check_for_update, latency = latency)
-    watcher$start()
-    onStop(watcher$stop)
-  } else {
-    # Fall back to legacy observer behavior
-    if (!is_false(getOption("shiny.autoreload.legacy_warning", TRUE))) {
-      cli::cli_warn(
-        c(
-          "Using legacy autoreload file watching. Please install {.pkg watcher} for a more performant autoreload file watcher.",
-          "i" = "Set {.run options(shiny.autoreload.legacy_warning = FALSE)} to suppress this warning."
-        ),
-        .frequency = "regularly",
-        .frequency_id = "shiny.autoreload.legacy_warning"
-      )
-    }
 
-    lastValue <- NULL
-    observeLabel <- paste0("File Auto-Reload - '", basename(dir), "'")
-    watcher <- observe(label = observeLabel, {
-      files <- sort_c(
-        list.files(dir, pattern = filePattern, recursive = TRUE, ignore.case = TRUE)
-      )
-      times <- file.info(files)$mtime
-      names(times) <- files
-  
-      if (is.null(lastValue)) {
-        # First run
-        lastValue <<- times
-      } else if (!identical(lastValue, times)) {
-        # We've changed!
-        lastValue <<- times
-        cachedAutoReloadLastChanged$set()
-        autoReloadCallbacks$invoke()
-      }
-  
-      invalidateLater(getOption("shiny.autoreload.interval", 500))
-    })
-  
-    onStop(watcher$destroy)
-  
-    watcher$destroy
-  }
+    invalidateLater(getOption("shiny.autoreload.interval", 500))
+  })
 
-  invisible(watcher)
+  onStop(obs$destroy)
+
+  obs$destroy
 }
 
 #' Load an app's supporting R files
@@ -401,7 +333,7 @@ initAutoReloadMonitor <- function(dir) {
 #' @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 environment in which the files in the `R/` directory should
+#' @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.
@@ -413,6 +345,17 @@ loadSupport <- function(appDir=NULL, renv=new.env(parent=globalenv()), globalren
     appDir <- findEnclosingApp(".")
   }
 
+  descFile <- file.path.ci(appDir, "DESCRIPTION")
+  if (file.exists(file.path.ci(appDir, "NAMESPACE")) ||
+      (file.exists(descFile) &&
+       identical(as.character(read.dcf(descFile, fields = "Type")), "Package")))
+  {
+    warning(
+      "Loading R/ subdirectory for Shiny application, but this directory appears ",
+      "to contain an R package. Sourcing files in R/ may cause unexpected behavior."
+    )
+  }
+
   if (!is.null(globalrenv)){
     # Evaluate global.R, if it exists.
     globalPath <- file.path.ci(appDir, "global.R")
@@ -427,12 +370,10 @@ loadSupport <- function(appDir=NULL, renv=new.env(parent=globalenv()), globalren
   helpersDir <- file.path(appDir, "R")
 
   disabled <- list.files(helpersDir, pattern="^_disable_autoload\\.r$", recursive=FALSE, ignore.case=TRUE)
-  if (length(disabled) > 0) {
+  if (length(disabled) > 0){
     return(invisible(renv))
   }
 
-  warn_if_app_dir_is_package(appDir)
-
   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:
@@ -447,27 +388,6 @@ loadSupport <- function(appDir=NULL, renv=new.env(parent=globalenv()), globalren
   invisible(renv)
 }
 
-warn_if_app_dir_is_package <- function(appDir) {
-  has_namespace <- file.exists(file.path.ci(appDir, "NAMESPACE"))
-  has_desc_pkg <- FALSE
-
-  if (!has_namespace) {
-    descFile <- file.path.ci(appDir, "DESCRIPTION")
-
-    has_desc_pkg <-
-      file.exists(descFile) &&
-      identical(as.character(read.dcf(descFile, fields = "Type")), "Package")
-  }
-
-  if (has_namespace || has_desc_pkg) {
-    warning(
-      "Loading R/ subdirectory for Shiny application, but this directory appears ",
-      "to contain an R package. Sourcing files in R/ may cause unexpected behavior. ",
-      "See `?loadSupport` for more details."
-    )
-  }
-}
-
 # This reads in an app dir for a single-file application (e.g. app.R), and
 # returns a shiny.appobj.
 # appDir must be a normalized (absolute) path, not a relative one
@@ -483,6 +403,8 @@ shinyAppDir_appR <- function(fileName, appDir, options=list())
       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.
@@ -527,7 +449,7 @@ shinyAppDir_appR <- function(fileName, appDir, options=list())
     staticPaths <- list()
   }
 
-  fallbackWWWDir <- system_file("www-dir", package = "shiny")
+  fallbackWWWDir <- system.file("www-dir", package = "shiny")
 
   oldwd <- NULL
   monitorHandle <- NULL

R/shinyui.R

@@ -14,11 +14,7 @@ NULL
 #' # now we can just write "static" content without withMathJax()
 #' div("more math here $$\\sqrt{2}$$")
 withMathJax <- function(...) {
-  path <- paste0(
-    getOption("shiny.mathjax.url", "https://mathjax.rstudio.com/latest/MathJax.js"),
-    "?",
-    getOption("shiny.mathjax.config", "config=TeX-AMS-MML_HTMLorMML")
-  )
+  path <- 'https://mathjax.rstudio.com/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML'
   tagList(
     tags$head(
       singleton(tags$script(src = path, type = 'text/javascript'))
@@ -43,7 +39,7 @@ renderPage <- function(ui, showcase=0, testMode=FALSE) {
 
     # Put the body into the default template
     ui <- htmlTemplate(
-      system_file("template", "default.html", package = "shiny"),
+      system.file("template", "default.html", package = "shiny"),
       lang = lang,
       body = ui,
       # this template is a complete HTML document
@@ -51,116 +47,71 @@ renderPage <- function(ui, showcase=0, testMode=FALSE) {
     )
   }
 
+  jquery <- function() {
+    version <- getOption("shiny.jquery.version", 3)
+    if (version == 3) {
+      return(htmlDependency(
+        "jquery", "3.5.1",
+        c(href = "shared"),
+        script = "jquery.min.js"
+      ))
+    }
+    if (version == 1) {
+      return(htmlDependency(
+        "jquery", "1.12.4",
+        c(href = "shared/legacy"),
+        script = "jquery.min.js"
+      ))
+    }
+    stop("Unsupported version of jQuery: ", version)
+  }
+
   shiny_deps <- c(
-    list(jqueryDependency()),
+    list(jquery()),
     shinyDependencies()
   )
 
   if (testMode) {
     # Add code injection listener if in test mode
     shiny_deps[[length(shiny_deps) + 1]] <-
-      htmlDependency(
-        "shiny-testmode",
-        get_package_version("shiny"),
-        src = "www/shared",
-        package = "shiny",
-        script = "shiny-testmode.js",
-        all_files = FALSE
-      )
+      htmlDependency("shiny-testmode", shinyPackageVersion(),
+                     c(href="shared"), script = "shiny-testmode.js")
   }
 
-  if (in_devmode() || in_client_devmode()) {
-    # If we're in dev mode, add a simple script to the head that injects a
-    # global variable for the client to use to detect dev mode.
-    shiny_deps[[length(shiny_deps) + 1]] <-
-      htmlDependency(
-        "shiny-devmode",
-        get_package_version("shiny"),
-        src = "www/shared",
-        package = "shiny",
-        head="<script>window.__SHINY_DEV_MODE__ = true;</script>",
-        all_files = FALSE
-      )
-  }
-
-
   html <- renderDocument(ui, shiny_deps, processDep = createWebDependency)
   enc2utf8(paste(collapse = "\n", html))
 }
 
-jqueryDependency <- function() {
-  version <- getOption("shiny.jquery.version", 3)
-  if (version == 3) {
-    return(htmlDependency(
-      "jquery", version_jquery,
-      src = "www/shared",
-      package = "shiny",
-      script = "jquery.min.js",
-      all_files = FALSE
-    ))
-  }
-  if (version == 1) {
-    return(htmlDependency(
-      "jquery", "1.12.4",
-      src = "www/shared/legacy",
-      package = "shiny",
-      script = "jquery.min.js",
-      all_files = FALSE
-    ))
-  }
-  stop("Unsupported version of jQuery: ", version)
-}
-
 shinyDependencies <- function() {
   list(
     bslib::bs_dependency_defer(shinyDependencyCSS),
-    busyIndicatorDependency(),
     htmlDependency(
       name = "shiny-javascript",
-      version = get_package_version("shiny"),
-      src = "www/shared",
-      package = "shiny",
-      script =
-        if (isTRUE(
-          get_devmode_option(
-            "shiny.minified",
-            TRUE
-          )
-        ))
-          "shiny.min.js"
-        else
-          "shiny.js",
-      all_files = FALSE
+      version = shinyPackageVersion(),
+      src = c(href = "shared"),
+      script = if (getOption("shiny.minified", TRUE)) "shiny.min.js" else "shiny.js"
     )
   )
 }
 
-shinyDependencySass <- function(bs_version) {
-  bootstrap_scss <- paste0("shiny.bootstrap", bs_version, ".scss")
-
-  scss_home <- system_file("www/shared/shiny_scss", package = "shiny")
-  scss_files <- file.path(scss_home, c(bootstrap_scss, "shiny.scss"))
-  lapply(scss_files, sass::sass_file)
-}
-
 shinyDependencyCSS <- function(theme) {
-  version <- get_package_version("shiny")
+  version <- shinyPackageVersion()
 
   if (!is_bs_theme(theme)) {
     return(htmlDependency(
       name = "shiny-css",
       version = version,
-      src = "www/shared",
-      package = "shiny",
-      stylesheet = "shiny.min.css",
-      all_files = FALSE
+      src = c(href = "shared"),
+      stylesheet = "shiny.min.css"
     ))
   }
 
-  bs_version <- bslib::theme_version(theme)
+  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)
 
   bslib::bs_dependency(
-    input = shinyDependencySass(bs_version),
+    input = scss_files,
     theme = theme,
     name = "shiny-sass",
     version = version,
@@ -170,30 +121,17 @@ shinyDependencyCSS <- function(theme) {
 
 #' Create a Shiny UI handler
 #'
-#' @description `r lifecycle::badge("superseded")`
-#'
-#' @description Historically this function was used in ui.R files to register a user
+#' Historically this function was used in ui.R files to register a user
 #' interface with Shiny. It is no longer required as of Shiny 0.10; simply
 #' ensure that the last expression to be returned from ui.R is a user interface.
 #' This function is kept for backwards compatibility with older applications. It
 #' returns the value that is passed to it.
 #'
-#' @param ui A user interface definition
+#' @param ui A user interace definition
 #' @return The user interface definition, without modifications or side effects.
 #' @keywords internal
 #' @export
 shinyUI <- function(ui) {
-  if (in_devmode()) {
-    shinyDeprecated(
-      "0.10.0", "shinyUI()",
-      details = paste0(
-        "When removing `shinyUI()`, ",
-        "ensure that the last expression returned from ui.R is a user interface ",
-        "normally supplied to `shinyUI(ui)`."
-      )
-    )
-  }
-
   .globals$ui <- list(ui)
   ui
 }

R/shinywrappers.R

@@ -2,23 +2,12 @@ utils::globalVariables('func', add = TRUE)
 
 #' Mark a function as a render function
 #'
-#' `r lifecycle::badge("superseded")` Please use [`createRenderFunction()`] to
-#' support async execution. (Shiny 1.1.0)
-#'
 #' Should be called by implementers of `renderXXX` functions in order to mark
 #' their return values as Shiny render functions, and to provide a hint to Shiny
 #' regarding what UI function is most commonly used with this type of render
 #' function. This can be used in R Markdown documents to create complete output
 #' widgets out of just the render function.
 #'
-#' Note that it is generally preferable to use [createRenderFunction()] instead
-#' of `markRenderFunction()`. It essentially wraps up the user-provided
-#' expression in the `transform` function passed to it, then passes the resulting
-#' function to `markRenderFunction()`. It also provides a simpler calling
-#' interface. There may be cases where `markRenderFunction()` must be used instead of
-#' [createRenderFunction()] -- for example, when the `transform` parameter of
-#' [createRenderFunction()] is not flexible enough for your needs.
-#'
 #' @param uiFunc A function that renders Shiny UI. Must take a single argument:
 #'   an output ID.
 #' @param renderFunc A function that is suitable for assigning to a Shiny output
@@ -48,7 +37,7 @@ utils::globalVariables('func', add = TRUE)
 #'   is able to serve JS and CSS resources.
 #' @return The `renderFunc` function, with annotations.
 #'
-#' @seealso [createRenderFunction()]
+#' @seealso [createRenderFunction()], [quoToFunction()]
 #' @export
 markRenderFunction <- function(
   uiFunc,
@@ -58,12 +47,6 @@ markRenderFunction <- function(
   cacheWriteHook = NULL,
   cacheReadHook = NULL
 ) {
-  # (Do not emit warning for superseded code, "since there’s no risk if you keep using it")
-  # # This method is called by the superseding function, createRenderFunction().
-  # if (in_devmode()) {
-  #   shinyDeprecated("1.1.0", "markRenderFunction()", "createRenderFunction()")
-  # }
-
   force(renderFunc)
 
   # a mutable object that keeps track of whether `useRenderFunction` has been
@@ -111,7 +94,6 @@ markRenderFunction <- function(
     # For everything else, do nothing.
     cacheHint <- lapply(cacheHint, function(x) {
       if      (is.function(x)) formalsAndBody(x)
-      else if (is_quosure(x)) zap_srcref(quo_get_expr(x))
       else if (is.language(x)) zap_srcref(x)
       else                     x
     })
@@ -151,27 +133,10 @@ print.shiny.render.function <- function(x, ...) {
   cat_line("<shiny.render.function>")
 }
 
-#' Implement custom render functions
+#' Implement render functions
 #'
-#' Developer-facing utilities for implementing a custom `renderXXX()` function.
-#' Before using these utilities directly, consider using the [`htmlwidgets`
-#' package](http://www.htmlwidgets.org/develop_intro.html) to implement custom
-#' outputs (i.e., custom `renderXXX()`/`xxxOutput()` functions). That said,
-#' these utilities can be used more directly if a full-blown htmlwidget isn't
-#' needed and/or the user-supplied reactive expression needs to be wrapped in
-#' additional call(s).
-#'
-#' To implement a custom `renderXXX()` function, essentially 2 things are needed:
-#'   1. Capture the user's reactive expression as a function.
-#'      * New `renderXXX()` functions can use `quoToFunction()` for this, but
-#'      already existing `renderXXX()` functions that contain `env` and `quoted`
-#'      parameters may want to continue using `installExprFunction()` for better
-#'      legacy support (see examples).
-#'   2. Flag the resulting function (from 1) as a Shiny rendering function and
-#'   also provide a UI container for displaying the result of the rendering
-#'   function.
-#'      * `createRenderFunction()` is currently recommended (instead of
-#'      [markRenderFunction()]) for this step (see examples).
+#' This function is a wrapper for [markRenderFunction()] which provides support
+#' for async computation via promises.
 #'
 #' @param func A function without parameters, that returns user data. If the
 #'   returned value is a promise, then the render function will proceed in async
@@ -188,24 +153,16 @@ print.shiny.render.function <- function(x, ...) {
 #' @return An annotated render function, ready to be assigned to an
 #'   `output` slot.
 #'
+#' @seealso [quoToFunction()], [markRenderFunction()].
+#'
 #' @examples
-#' # A custom render function that repeats the supplied value 3 times
-#' renderTriple <- function(expr) {
-#'   # Wrap user-supplied reactive expression into a function
-#'   func <- quoToFunction(rlang::enquo0(expr))
-#'
-#'   createRenderFunction(
-#'     func,
-#'     transform = function(value, session, name, ...) {
-#'       paste(rep(value, 3), collapse=", ")
-#'     },
-#'     outputFunc = textOutput
-#'   )
-#' }
-#'
-#' # For better legacy support, consider using installExprFunction() over quoToFunction()
-#' renderTripleLegacy <- function(expr, env = parent.frame(), quoted = FALSE) {
-#'   func <- installExprFunction(expr, "func", env, quoted)
+#' # A very simple render function
+#' renderTriple <- function(x) {
+#'   x <- substitute(x)
+#'   if (!rlang::is_quosure(x)) {
+#'     x <- rlang::new_quosure(x, env = parent.frame())
+#'   }
+#'   func <- quoToFunction(x, "renderTriple")
 #'
 #'   createRenderFunction(
 #'     func,
@@ -217,38 +174,10 @@ print.shiny.render.function <- function(x, ...) {
 #' }
 #'
 #' # Test render function from the console
-#' reactiveConsole(TRUE)
-#'
-#' v <- reactiveVal("basic")
-#' r <- renderTriple({ v() })
+#' a <- 1
+#' r <- renderTriple({ a + 1 })
+#' a <- 2
 #' r()
-#' #> [1] "basic, basic, basic"
-#'
-#' # User can supply quoted code via rlang::quo(). Note that evaluation of the
-#' # expression happens when r2() is invoked, not when r2 is created.
-#' q <- rlang::quo({ v() })
-#' r2 <- rlang::inject(renderTriple(!!q))
-#' v("rlang")
-#' r2()
-#' #> [1] "rlang, rlang, rlang"
-#'
-#' # Supplying quoted code without rlang::quo() requires installExprFunction()
-#' expr <- quote({ v() })
-#' r3 <- renderTripleLegacy(expr, quoted = TRUE)
-#' v("legacy")
-#' r3()
-#' #> [1] "legacy, legacy, legacy"
-#'
-#' # The legacy approach also supports with quosures (env is ignored in this case)
-#' q <- rlang::quo({ v() })
-#' r4 <- renderTripleLegacy(q, quoted = TRUE)
-#' v("legacy-rlang")
-#' r4()
-#' #> [1] "legacy-rlang, legacy-rlang, legacy-rlang"
-#'
-#' # Turn off reactivity in the console
-#' reactiveConsole(FALSE)
-#'
 #' @export
 createRenderFunction <- function(
   func,
@@ -383,13 +312,13 @@ markOutputAttrs <- function(renderFunc, snapshotExclude = NULL,
 #' The corresponding HTML output tag should be `div` or `img` and have
 #' the CSS class name `shiny-image-output`.
 #'
-#' @seealso 
-#' * For more details on how the images are generated, and how to control
+#' @seealso For more details on how the images are generated, and how to control
 #'   the output, see [plotPNG()].
-#' * Use [outputOptions()] to set general output options for an image output.
 #'
 #' @param expr An expression that returns a list.
-#' @inheritParams renderUI
+#' @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 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`;
@@ -468,10 +397,11 @@ markOutputAttrs <- function(renderFunc, snapshotExclude = NULL,
 #'
 #' shinyApp(ui, server)
 #' }
-renderImage <- function(expr, env = parent.frame(), quoted = FALSE,
+renderImage <- function(expr, env=parent.frame(), quoted=FALSE,
                         deleteFile, outputArgs=list())
 {
-  func <- installExprFunction(expr, "func", env, quoted, label = "renderImage")
+  expr <- get_quosure(expr, env, quoted)
+  func <- quoToFunction(expr, "renderImage")
 
   # missing() must be used directly within the function with the given arg
   if (missing(deleteFile)) {
@@ -593,19 +523,21 @@ isTemp <- function(path, tempDir = tempdir(), mustExist) {
 #' function return [invisible()].
 #'
 #' @param expr An expression to evaluate.
-#' @inheritParams renderUI
+#' @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 Width of printed output.
 #' @param outputArgs A list of arguments to be passed through to the implicit
 #'   call to [verbatimTextOutput()] or [textOutput()] when the functions are
 #'   used in an interactive RMarkdown document.
 #'
 #' @example res/text-example.R
-#' @seealso [outputOptions()]
 #' @export
 renderPrint <- function(expr, env = parent.frame(), quoted = FALSE,
                         width = getOption('width'), outputArgs=list())
 {
-  func <- installExprFunction(expr, "func", env, quoted, label = "renderPrint")
+  expr <- get_quosure(expr, env, quoted)
+  func <- quoToFunction(expr, "renderPrint")
 
   # Set a promise domain that sets the console width
   #   and captures output
@@ -637,7 +569,7 @@ renderPrint <- function(expr, env = parent.frame(), quoted = FALSE,
     outputArgs,
     cacheHint = list(
       label = "renderPrint",
-      origUserExpr = installedFuncExpr(func)
+      origUserExpr = get_expr(expr)
     )
   )
 }
@@ -687,10 +619,11 @@ createRenderPrintPromiseDomain <- function(width) {
 #'   element.
 #' @export
 #' @rdname renderPrint
-renderText <- function(expr, env = parent.frame(), quoted = FALSE,
+renderText <- function(expr, env=parent.frame(), quoted=FALSE,
                        outputArgs=list(), sep=" ") {
 
-  func <- installExprFunction(expr, "func", env, quoted, label = "renderText")
+  expr <- get_quosure(expr, env, quoted)
+  func <- quoToFunction(expr, "renderText")
 
   createRenderFunction(
     func,
@@ -711,18 +644,14 @@ renderText <- function(expr, env = parent.frame(), quoted = FALSE,
 #'
 #' @param expr An expression that returns a Shiny tag object, [HTML()],
 #'   or a list of such objects.
-#' @template param-env
-#' @templateVar x expr
-#' @templateVar env env
-#' @templateVar quoted quoted
-#' @template param-quoted
-#' @templateVar x expr
-#' @templateVar quoted quoted
+#' @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 [uiOutput()] when `renderUI` is used in an
 #'   interactive R Markdown document.
 #'
-#' @seealso [uiOutput()], [outputOptions()]
+#' @seealso [uiOutput()]
 #' @export
 #' @examples
 #' ## Only run examples in interactive R sessions
@@ -746,7 +675,8 @@ renderText <- function(expr, env = parent.frame(), quoted = FALSE,
 renderUI <- function(expr, env = parent.frame(), quoted = FALSE,
                      outputArgs = list())
 {
-  func <- installExprFunction(expr, "func", env, quoted, label = "renderUI")
+  expr <- get_quosure(expr, env, quoted)
+  func <- quoToFunction(expr, "renderUI")
 
   createRenderFunction(
     func,
@@ -780,10 +710,10 @@ renderUI <- function(expr, env = parent.frame(), quoted = FALSE,
 #'   that file path. (Reactive values and functions may be used from this
 #'   function.)
 #' @param contentType A string of the download's
-#'   [content type](https://en.wikipedia.org/wiki/Internet_media_type), for
-#'   example `"text/csv"` or `"image/png"`. If `NULL`, the content type
-#'   will be guessed based on the filename extension, or
-#'   `application/octet-stream` if the extension is unknown.
+#'   [content type](http://en.wikipedia.org/wiki/Internet_media_type), for
+#'   example `"text/csv"` or `"image/png"`. If `NULL` or
+#'   `NA`, the content type will be guessed based on the filename
+#'   extension, or `application/octet-stream` if the extension is unknown.
 #' @param outputArgs A list of arguments to be passed through to the implicit
 #'   call to [downloadButton()] when `downloadHandler` is used
 #'   in an interactive R Markdown document.
@@ -812,15 +742,8 @@ renderUI <- function(expr, env = parent.frame(), quoted = FALSE,
 #'
 #' shinyApp(ui, server)
 #' }
-#'
-#' @seealso
-#' * The download handler, like other outputs, is suspended (disabled) by
-#'   default for download buttons and links that are hidden. Use 
-#'   [outputOptions()] to control this behavior, e.g. to set 
-#'   `suspendWhenHidden = FALSE` if the download is initiated by 
-#'   programmatically clicking on the download button using JavaScript.
 #' @export
-downloadHandler <- function(filename, content, contentType=NULL, outputArgs=list()) {
+downloadHandler <- function(filename, content, contentType=NA, outputArgs=list()) {
   renderFunc <- function(shinysession, name, ...) {
     shinysession$registerDownload(name, filename, contentType, content)
   }
@@ -829,33 +752,28 @@ downloadHandler <- function(filename, content, contentType=NULL, outputArgs=list
   )
 }
 
-#' Table output with the JavaScript DataTables library
+#' Table output with the JavaScript library DataTables
 #'
-#' @description
-#' `r lifecycle::badge("deprecated")`
-#'
-#' This function is deprecated, use
-#' [DT::renderDT()](https://rstudio.github.io/DT/shiny.html) instead. It
-#' provides a superset of functionality, better performance, and better user
-#' experience.
+#' Makes a reactive version of the given function that returns a data frame (or
+#' matrix), which will be rendered with the DataTables library. Paging,
+#' searching, filtering, and sorting can be done on the R side using Shiny as
+#' the server infrastructure.
 #'
+#' For the `options` argument, the character elements that have the class
+#' `"AsIs"` (usually returned from [base::I()]) will be evaluated in
+#' JavaScript. This is useful when the type of the option value is not supported
+#' in JSON, e.g., a JavaScript function, which can be obtained by evaluating a
+#' character string. Note this only applies to the root-level elements of the
+#' options list, and the `I()` notation does not work for lower-level
+#' elements in the list.
 #' @param expr An expression that returns a data frame or a matrix.
-#' @inheritParams renderTable
 #' @param options A list of initialization options to be passed to DataTables,
-#'   or a function to return such a list.  You can find a complete list of
-#'   options at <https://datatables.net/reference/option/>.
-#'
-#'   Any top-level strings with class `"AsIs"` (as created by [I()]) will be
-#'   evaluated in JavaScript. This is useful when the type of the option value
-#'   is not supported in JSON, e.g., a JavaScript function, which can be
-#'   obtained by  evaluating a character string. This only applies to the
-#'   root-level elements of options list, and does not worked for lower-level
-#'   elements in the list.
+#'   or a function to return such a list.
 #' @param searchDelay The delay for searching, in milliseconds (to avoid too
 #'   frequent search requests).
 #' @param callback A JavaScript function to be applied to the DataTable object.
 #'   This is useful for DataTables plug-ins, which often require the DataTable
-#'   instance to be available.
+#'   instance to be available (<http://datatables.net/extensions/>).
 #' @param escape Whether to escape HTML entities in the table: `TRUE` means
 #'   to escape the whole table, and `FALSE` means not to escape it.
 #'   Alternatively, you can specify numeric column indices or column names to
@@ -863,8 +781,17 @@ downloadHandler <- function(filename, content, contentType=NULL, outputArgs=list
 #'   `c(1, 3, 4)`, or `c(-1, -3)` (all columns except the first and
 #'   third), or `c('Species', 'Sepal.Length')`.
 #' @param outputArgs A list of arguments to be passed through to the implicit
-#'   call to `dataTableOutput()` when `renderDataTable()` is used
+#'   call to [dataTableOutput()] when `renderDataTable` is used
 #'   in an interactive R Markdown document.
+#'
+#' @references <http://datatables.net>
+#' @note This function only provides the server-side version of DataTables
+#'   (using R to process the data object on the server side). There is a
+#'   separate package \pkg{DT} (<https://github.com/rstudio/DT>) that allows
+#'   you to create both server-side and client-side DataTables, and supports
+#'   additional DataTables features. Consider using `DT::renderDataTable()`
+#'   and `DT::dataTableOutput()` (see
+#'   <http://rstudio.github.io/DT/shiny.html> for more information).
 #' @export
 #' @inheritParams renderPlot
 #' @examples
@@ -889,62 +816,13 @@ downloadHandler <- function(filename, content, contentType=NULL, outputArgs=list
 #'     }
 #'   )
 #' }
-#' @keywords internal
 renderDataTable <- function(expr, options = NULL, searchDelay = 500,
                             callback = 'function(oTable) {}', escape = TRUE,
                             env = parent.frame(), quoted = FALSE,
-                            outputArgs = list()) {
-
-  legacy <- useLegacyDataTable(
-    from = "shiny::renderDataTable()",
-    to = "DT::renderDT()"
-  )
-
-  if (!quoted) {
-    expr <- substitute(expr)
-    quoted <- TRUE
-  }
-
-  if (legacy) {
-
-    legacyRenderDataTable(
-      expr, env = env, quoted = quoted,
-      options = options,
-      searchDelay = searchDelay,
-      callback = callback,
-      escape = escape,
-      outputArgs = outputArgs
-    )
-
-  } else {
-
-    if (!missing(searchDelay)) {
-      warning("Ignoring renderDataTable()'s searchDelay value (since DT::renderDT() has no equivalent).")
-    }
-
-    force(options)
-    force(callback)
-    force(escape)
-    force(outputArgs)
-
-    DT::renderDataTable(
-      expr, env = env, quoted = quoted,
-      options = if (is.null(options)) list() else options,
-      # Turn function into a statement
-      callback = DT::JS(paste0("(", callback, ")(table)")),
-      escape = escape,
-      outputArgs = outputArgs
-    )
-  }
-}
-
-
-legacyRenderDataTable <- function(expr, options = NULL, searchDelay = 500,
-                                  callback = 'function(oTable) {}', escape = TRUE,
-                                  env = parent.frame(), quoted = FALSE,
-                                  outputArgs=list()) {
-
-  func <- installExprFunction(expr, "func", env, quoted, label = "renderDataTable")
+                            outputArgs=list())
+{
+  expr <- get_quosure(expr, env, quoted)
+  func <- quoToFunction(expr, "renderDataTable")
 
   renderFunc <- function(shinysession, name, ...) {
     if (is.function(options)) options <- options()
@@ -997,7 +875,7 @@ legacyRenderDataTable <- function(expr, options = NULL, searchDelay = 500,
 DT10Names <- function() {
   rbind(
     utils::read.table(
-      system_file('www/shared/datatables/upgrade1.10.txt', package = 'shiny'),
+      system.file('www/shared/datatables/upgrade1.10.txt', package = 'shiny'),
       stringsAsFactors = FALSE
     ),
     c('aoColumns', 'Removed')  # looks like an omission on the upgrade guide
@@ -1032,3 +910,64 @@ checkDT9 <- function(options) {
   names(options)[i] <- nms10
   options
 }
+
+# Deprecated functions ------------------------------------------------------
+
+#' Deprecated reactive functions
+#' @name deprecatedReactives
+#' @keywords internal
+NULL
+
+#' Plot output (deprecated)
+#'
+#' `reactivePlot` has been replaced by [renderPlot()].
+#' @param func A function.
+#' @param width Width.
+#' @param height Height.
+#' @param ... Other arguments to pass on.
+#' @rdname deprecatedReactives
+#' @export
+reactivePlot <- function(func, width='auto', height='auto', ...) {
+  shinyDeprecated(new="renderPlot")
+  renderPlot({ func() }, width=width, height=height, ...)
+}
+
+#' Table output (deprecated)
+#'
+#' `reactiveTable` has been replaced by [renderTable()].
+#' @rdname deprecatedReactives
+#' @export
+reactiveTable <- function(func, ...) {
+  shinyDeprecated(new="renderTable")
+  renderTable({ func() })
+}
+
+#' Print output (deprecated)
+#'
+#' `reactivePrint` has been replaced by [renderPrint()].
+#' @rdname deprecatedReactives
+#' @export
+reactivePrint <- function(func) {
+  shinyDeprecated(new="renderPrint")
+  renderPrint({ func() })
+}
+
+#' UI output (deprecated)
+#'
+#' `reactiveUI` has been replaced by [renderUI()].
+#' @rdname deprecatedReactives
+#' @export
+reactiveUI <- function(func) {
+  shinyDeprecated(new="renderUI")
+  renderUI({ func() })
+}
+
+#' Text output (deprecated)
+#'
+#' `reactiveText` has been replaced by [renderText()].
+#' @rdname deprecatedReactives
+#' @export
+reactiveText <- function(func) {
+  shinyDeprecated(new="renderText")
+  renderText({ func() })
+}

R/showcase.R

@@ -32,40 +32,26 @@ licenseLink <- function(licenseName) {
 showcaseHead <- function() {
 
   deps  <- list(
-    jqueryuiDependency(),
-    htmlDependency(
-      "showdown",
-      "0.3.1",
-      src = "www/shared/showdown/compressed",
-      package="shiny",
-      script = "showdown.js"
-    ),
-    htmlDependency(
-      "highlight.js",
-      "6.2",
-      src = "www/shared/highlight",
-      package="shiny",
-      script = "highlight.pack.js",
-      stylesheet = "rstudio.css"
-    ),
-    htmlDependency(
-      "showcase",
-      "0.1.0",
-      src = "www/shared",
-      package = "shiny",
-      script = "shiny-showcase.js",
-      stylesheet = "shiny-showcase.css",
-      all_files = FALSE
-    )
+    htmlDependency("jqueryui", "1.12.1", c(href="shared/jqueryui"),
+      script = "jquery-ui.min.js"),
+    htmlDependency("showdown", "0.3.1", c(href="shared/showdown/compressed"),
+      script = "showdown.js"),
+    htmlDependency("highlight.js", "6.2", c(href="shared/highlight"),
+      script = "highlight.pack.js")
   )
 
   mdfile <- file.path.ci(getwd(), 'Readme.md')
-  html <- tagList(
+  html <- with(tags, tagList(
+    script(src="shared/shiny-showcase.js"),
+    link(rel="stylesheet", type="text/css",
+         href="shared/highlight/rstudio.css"),
+    link(rel="stylesheet", type="text/css",
+         href="shared/shiny-showcase.css"),
     if (file.exists(mdfile))
-      tags$script(type="text/markdown", id="showcase-markdown-content",
+      script(type="text/markdown", id="showcase-markdown-content",
         paste(readUTF8(mdfile), collapse="\n"))
     else ""
-  )
+  ))
 
   return(attachDependencies(html, deps))
 }
@@ -97,7 +83,7 @@ navTabsHelper <- function(files, prefix = "") {
     with(tags,
       li(class=if (tolower(file) %in% c("app.r", "server.r")) "active" else "",
          a(href=paste("#", gsub(".", "_", file, fixed=TRUE), "_code", sep=""),
-           "data-toggle"="tab", "data-bs-toggle"="tab", paste0(prefix, file)))
+           "data-toggle"="tab", paste0(prefix, file)))
     )
   })
 }
@@ -106,7 +92,7 @@ navTabsDropdown <- function(files) {
   if (length(files) > 0) {
     with(tags,
       li(role="presentation", class="dropdown",
-        a(class="dropdown-toggle", `data-toggle`="dropdown", `data-bs-toggle`="dropdown", href="#",
+        a(class="dropdown-toggle", `data-toggle`="dropdown", href="#",
           role="button", `aria-haspopup`="true", `aria-expanded`="false",
           "www", span(class="caret")
         ),
@@ -148,7 +134,7 @@ showcaseCodeTabs <- function(codeLicense) {
     a(id="showcase-code-position-toggle",
       class="btn btn-default btn-sm",
       onclick="toggleCodePosition()",
-      icon("level-up-alt"),
+      icon("level-up"),
       "show with app"),
     ul(class="nav nav-tabs",
        navTabsHelper(rFiles),

R/stack.R

@@ -0,0 +1,70 @@
+# A Stack object backed by a list. The backing list will grow or shrink as
+# the stack changes in size.
+Stack <- R6Class(
+  'Stack',
+  portable = FALSE,
+  class = FALSE,
+  public = list(
+
+    initialize = function(init = 20L) {
+      # init is the initial size of the list. It is also used as the minimum
+      # size of the list as it shrinks.
+      private$stack <- vector("list", init)
+      private$init <- init
+    },
+
+    push = function(..., .list = NULL) {
+      args <- c(list(...), .list)
+      new_size <- count + length(args)
+
+      # Grow if needed; double in size
+      while (new_size > length(stack)) {
+        stack[length(stack) * 2] <<- list(NULL)
+      }
+      stack[count + seq_along(args)] <<- args
+      count <<- new_size
+
+      invisible(self)
+    },
+
+    pop = function() {
+      if (count == 0L)
+        return(NULL)
+
+      value <- stack[[count]]
+      stack[count] <<- list(NULL)
+      count <<- count - 1L
+
+      # Shrink list if < 1/4 of the list is used, down to a minimum size of `init`
+      len <- length(stack)
+      if (len > init && count < len/4) {
+        new_len <- max(init, ceiling(len/2))
+        stack <<- stack[seq_len(new_len)]
+      }
+
+      value
+    },
+
+    peek = function() {
+      if (count == 0L)
+        return(NULL)
+      stack[[count]]
+    },
+
+    size = function() {
+      count
+    },
+
+    # Return the entire stack as a list, where the first item in the list is the
+    # oldest item in the stack, and the last item is the most recently added.
+    as_list = function() {
+      stack[seq_len(count)]
+    }
+  ),
+
+  private = list(
+    stack = NULL,   # A list that holds the items
+    count = 0L,     # Current number of items in the stack
+    init = 20L      # Initial and minimum size of the stack
+  )
+)

R/staticimports.R

@@ -1,200 +0,0 @@
-# Generated by staticimports; do not edit by hand.
-# ======================================================================
-# Imported from pkg:staticimports
-# ======================================================================
-
-# Given a vector, return TRUE if any elements are named, FALSE otherwise.
-# For zero-length vectors, always return FALSE.
-any_named <- function(x) {
-  if (length(x) == 0) return(FALSE)
-  nms <- names(x)
-  !is.null(nms) && any(nzchar(nms))
-}
-
-# Given a vector, return TRUE if any elements are unnamed, FALSE otherwise.
-# For zero-length vectors, always return FALSE.
-any_unnamed <- function(x) {
-  if (length(x) == 0) return(FALSE)
-  nms <- names(x)
-  is.null(nms) || !all(nzchar(nms))
-}
-
-# Borrowed from pkgload:::dev_meta, with some modifications.
-# Returns TRUE if `pkg` was loaded with `devtools::load_all()`.
-devtools_loaded <- function(pkg) {
-  ns <- .getNamespace(pkg)
-  if (is.null(ns) || is.null(ns$.__DEVTOOLS__)) {
-    return(FALSE)
-  }
-  TRUE
-}
-
-get_package_version <- function(pkg) {
-  # `utils::packageVersion()` can be slow, so first try the fast path of
-  # checking if the package is already loaded.
-  ns <- .getNamespace(pkg)
-  if (is.null(ns)) {
-    utils::packageVersion(pkg)
-  } else {
-    as.package_version(ns$.__NAMESPACE__.$spec[["version"]])
-  }
-}
-
-is_installed <- function(pkg, version = NULL) {
-  installed <- isNamespaceLoaded(pkg) || nzchar(system_file_cached(package = pkg))
-
-  if (is.null(version)) {
-    return(installed)
-  }
-
-  if (!is.character(version) && !inherits(version, "numeric_version")) {
-    # Avoid https://bugs.r-project.org/show_bug.cgi?id=18548
-    alert <- if (identical(Sys.getenv("TESTTHAT"), "true")) stop else warning
-    alert("`version` must be a character string or a `package_version` or `numeric_version` object.")
-
-    version <- numeric_version(sprintf("%0.9g", version))
-  }
-
-  installed && isTRUE(get_package_version(pkg) >= version)
-}
-
-# Simplified version rlang:::s3_register() that just uses
-# warning() instead of rlang::warn() when registration fails
-# https://github.com/r-lib/rlang/blob/main/R/compat-s3-register.R
-s3_register <- function(generic, class, method = NULL) {
-  stopifnot(is.character(generic), length(generic) == 1)
-  stopifnot(is.character(class), length(class) == 1)
-
-  pieces <- strsplit(generic, "::")[[1]]
-  stopifnot(length(pieces) == 2)
-  package <- pieces[[1]]
-  generic <- pieces[[2]]
-
-  caller <- parent.frame()
-
-  get_method_env <- function() {
-    top <- topenv(caller)
-    if (isNamespace(top)) {
-      asNamespace(environmentName(top))
-    } else {
-      caller
-    }
-  }
-  get_method <- function(method, env) {
-    if (is.null(method)) {
-      get(paste0(generic, ".", class), envir = get_method_env())
-    } else {
-      method
-    }
-  }
-
-  register <- function(...) {
-    envir <- asNamespace(package)
-
-    # Refresh the method each time, it might have been updated by
-    # `devtools::load_all()`
-    method_fn <- get_method(method)
-    stopifnot(is.function(method_fn))
-
-    # Only register if generic can be accessed
-    if (exists(generic, envir)) {
-      registerS3method(generic, class, method_fn, envir = envir)
-    } else {
-      warning(
-        "Can't find generic `", generic, "` in package ", package,
-        " register S3 method. Do you need to update ", package,
-        " to the latest version?", call. = FALSE
-      )
-    }
-  }
-
-  # Always register hook in case package is later unloaded & reloaded
-  setHook(packageEvent(package, "onLoad"), function(...) {
-    register()
-  })
-
-  # Avoid registration failures during loading (pkgload or regular).
-  # Check that environment is locked because the registering package
-  # might be a dependency of the package that exports the generic. In
-  # that case, the exports (and the generic) might not be populated
-  # yet (#1225).
-  if (isNamespaceLoaded(package) && environmentIsLocked(asNamespace(package))) {
-    register()
-  }
-
-  invisible()
-}
-
-# Borrowed from pkgload::shim_system.file, with some modifications. This behaves
-# like `system.file()`, except that (1) for packages loaded with
-# `devtools::load_all()`, it will return the path to files in the package's
-# inst/ directory, and (2) for other packages, the directory lookup is cached.
-# Also, to keep the implementation simple, it doesn't support specification of
-# lib.loc or mustWork.
-system_file <- function(..., package = "base") {
-  if (!devtools_loaded(package))  {
-    return(system_file_cached(..., package = package))
-  }
-
-  if (!is.null(names(list(...)))) {
-    stop("All arguments other than `package` must be unnamed.")
-  }
-
-  # If package was loaded with devtools (the package loaded with load_all),
-  # also search for files under inst/, and don't cache the results (it seems
-  # more likely that the package path will change during the development
-  # process)
-  pkg_path <- find.package(package)
-
-  # First look in inst/
-  files_inst <- file.path(pkg_path, "inst", ...)
-  present_inst <- file.exists(files_inst)
-
-  # For any files that weren't present in inst/, look in the base path
-  files_top <- file.path(pkg_path, ...)
-  present_top <- file.exists(files_top)
-
-  # Merge them together. Here are the different possible conditions, and the
-  # desired result. NULL means to drop that element from the result.
-  #
-  # files_inst:   /inst/A  /inst/B  /inst/C  /inst/D
-  # present_inst:    T        T        F        F
-  # files_top:      /A       /B       /C       /D
-  # present_top:     T        F        T        F
-  # result:       /inst/A  /inst/B    /C       NULL
-  #
-  files <- files_top
-  files[present_inst] <- files_inst[present_inst]
-  # Drop cases where not present in either location
-  files <- files[present_inst | present_top]
-  if (length(files) == 0) {
-    return("")
-  }
-  # Make sure backslashes are replaced with slashes on Windows
-  normalizePath(files, winslash = "/")
-}
-
-# A wrapper for `system.file()`, which caches the package path because
-# `system.file()` can be slow. If a package is not installed, the result won't
-# be cached.
-system_file_cached <- local({
-  pkg_dir_cache <- character()
-
-  function(..., package = "base") {
-    if (!is.null(names(list(...)))) {
-      stop("All arguments other than `package` must be unnamed.")
-    }
-
-    not_cached <- is.na(match(package, names(pkg_dir_cache)))
-    if (not_cached) {
-      pkg_dir <- system.file(package = package)
-      if (nzchar(pkg_dir)) {
-        pkg_dir_cache[[package]] <<- pkg_dir
-      }
-    } else {
-      pkg_dir <- pkg_dir_cache[[package]]
-    }
-
-    file.path(pkg_dir, ...)
-  }
-})

R/test.R

@@ -158,7 +158,8 @@ print.shiny_runtests <- function(x, ..., reporter = "summary") {
 
 
   if (any(x$pass)) {
-    cli::cat_bullet("Success", bullet = "tick", bullet_col = "green")
+    # TODO in future... use clisymbols::symbol$tick and crayon green
+    cat("* Success\n")
     mapply(
       x$file,
       x$pass,
@@ -170,8 +171,9 @@ print.shiny_runtests <- function(x, ..., reporter = "summary") {
       }
     )
   }
-  if (!all(x$pass)) {
-    cli::cat_bullet("Failure", bullet = "cross", bullet_col = "red")
+  if (any(!x$pass)) {
+    # TODO in future... use clisymbols::symbol$cross and crayon red
+    cat("* Failure\n")
     mapply(
       x$file,
       x$pass,

R/update-input.R

@@ -34,14 +34,8 @@
 #' shinyApp(ui, server)
 #' }
 #' @export
-updateTextInput <- function(session = getDefaultReactiveDomain(), inputId, label = NULL, value = NULL, placeholder = NULL) {
-  validate_session_object(session)
-
-  message <- dropNulls(list(
-    label = if (!is.null(label)) processDeps(label, session),
-    value = value,
-    placeholder = placeholder
-  ))
+updateTextInput <- function(session, inputId, label = NULL, value = NULL, placeholder = NULL) {
+  message <- dropNulls(list(label=label, value=value, placeholder=placeholder))
   session$sendInputMessage(inputId, message)
 }
 
@@ -112,13 +106,8 @@ updateTextAreaInput <- updateTextInput
 #' shinyApp(ui, server)
 #' }
 #' @export
-updateCheckboxInput <- function(session = getDefaultReactiveDomain(), inputId, label = NULL, value = NULL) {
-  validate_session_object(session)
-
-  message <- dropNulls(list(
-    label = if (!is.null(label)) processDeps(label, session),
-    value = value
-  ))
+updateCheckboxInput <- function(session, inputId, label = NULL, value = NULL) {
+  message <- dropNulls(list(label=label, value=value))
   session$sendInputMessage(inputId, message)
 }
 
@@ -126,8 +115,6 @@ updateCheckboxInput <- function(session = getDefaultReactiveDomain(), inputId, l
 #' Change the label or icon of an action button on the client
 #'
 #' @template update-input
-#' @param disabled If `TRUE`, the button will not be clickable; if `FALSE`, it
-#'   will be.
 #' @inheritParams actionButton
 #'
 #' @seealso [actionButton()]
@@ -157,13 +144,13 @@ updateCheckboxInput <- function(session = getDefaultReactiveDomain(), inputId, l
 #'       label = "New label",
 #'       icon = icon("calendar"))
 #'
-#'     # Leaves goButton2's label unchanged and
+#'     # Leaves goButton2's label unchaged and
 #'     # removes its icon
 #'     updateActionButton(session, "goButton2",
 #'       icon = character(0))
 #'
 #'     # Leaves goButton3's icon, if it exists,
-#'     # unchanged and changes its label
+#'     # unchaged and changes its label
 #'     updateActionButton(session, "goButton3",
 #'       label = "New label 3")
 #'
@@ -178,21 +165,14 @@ updateCheckboxInput <- function(session = getDefaultReactiveDomain(), inputId, l
 #' }
 #' @rdname updateActionButton
 #' @export
-updateActionButton <- function(session = getDefaultReactiveDomain(), inputId, label = NULL, icon = NULL, disabled = NULL) {
-  validate_session_object(session)
-
-  message <- dropNulls(list(
-    label = if (!is.null(label)) processDeps(label, session),
-    icon = if (!is.null(icon)) processDeps(validateIcon(icon), session),
-    disabled = disabled
-  ))
+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 <- function(session = getDefaultReactiveDomain(), inputId, label = NULL, icon = NULL) {
-  updateActionButton(session, inputId=inputId, label=label, icon=icon)
-}
+updateActionLink <- updateActionButton
 
 
 #' Change the value of a date input on the client
@@ -226,21 +206,14 @@ updateActionLink <- function(session = getDefaultReactiveDomain(), inputId, labe
 #' shinyApp(ui, server)
 #' }
 #' @export
-updateDateInput <- function(session = getDefaultReactiveDomain(), inputId, label = NULL, value = NULL,
-                            min = NULL, max = NULL)
-{
-  validate_session_object(session)
+updateDateInput <- function(session, inputId, label = NULL, value = NULL,
+                            min = NULL, max = NULL) {
 
   value <- dateYMD(value, "value")
   min   <- dateYMD(min, "min")
   max   <- dateYMD(max, "max")
 
-  message <- dropNulls(list(
-    label = if (!is.null(label)) processDeps(label, session),
-    value = value,
-    min = min,
-    max = max
-  ))
+  message <- dropNulls(list(label=label, value=value, min=min, max=max))
   session$sendInputMessage(inputId, message)
 }
 
@@ -278,11 +251,9 @@ updateDateInput <- function(session = getDefaultReactiveDomain(), inputId, label
 #' shinyApp(ui, server)
 #' }
 #' @export
-updateDateRangeInput <- function(session = getDefaultReactiveDomain(), inputId, label = NULL,
+updateDateRangeInput <- function(session, inputId, label = NULL,
                                  start = NULL, end = NULL, min = NULL,
-                                 max = NULL)
-{
-  validate_session_object(session)
+                                 max = NULL) {
 
   start <- dateYMD(start, "start")
   end <- dateYMD(end, "end")
@@ -290,7 +261,7 @@ updateDateRangeInput <- function(session = getDefaultReactiveDomain(), inputId,
   max <- dateYMD(max, "max")
 
   message <- dropNulls(list(
-    label = if (!is.null(label)) processDeps(label, session),
+    label = label,
     value = dropNulls(list(start = start, end = end)),
     min = min,
     max = max
@@ -302,7 +273,7 @@ updateDateRangeInput <- function(session = getDefaultReactiveDomain(), inputId,
 #' Change the selected tab on the client
 #'
 #' @param session The `session` object passed to function given to
-#'   `shinyServer`. Default is `getDefaultReactiveDomain()`.
+#'   `shinyServer`.
 #' @param inputId The id of the `tabsetPanel`, `navlistPanel`,
 #' or `navbarPage` object.
 #' @inheritParams tabsetPanel
@@ -338,9 +309,7 @@ updateDateRangeInput <- function(session = getDefaultReactiveDomain(), inputId,
 #' shinyApp(ui, server)
 #' }
 #' @export
-updateTabsetPanel <- function(session = getDefaultReactiveDomain(), inputId, selected = NULL) {
-  validate_session_object(session)
-
+updateTabsetPanel <- function(session, inputId, selected = NULL) {
   message <- dropNulls(list(value = selected))
   session$sendInputMessage(inputId, message)
 }
@@ -388,17 +357,12 @@ updateNavlistPanel <- updateTabsetPanel
 #' shinyApp(ui, server)
 #' }
 #' @export
-updateNumericInput <- function(session = getDefaultReactiveDomain(), inputId, label = NULL, value = NULL,
-  min = NULL, max = NULL, step = NULL) {
-
-  validate_session_object(session)
+updateNumericInput <- function(session, inputId, label = NULL, value = NULL,
+    min = NULL, max = NULL, step = NULL) {
 
   message <- dropNulls(list(
-    label = if (!is.null(label)) processDeps(label, session),
-    value = formatNoSci(value),
-    min = formatNoSci(min),
-    max = formatNoSci(max),
-    step = formatNoSci(step)
+    label = label, value = formatNoSci(value),
+    min = formatNoSci(min), max = formatNoSci(max), step = formatNoSci(step)
   ))
   session$sendInputMessage(inputId, message)
 }
@@ -440,28 +404,9 @@ updateNumericInput <- function(session = getDefaultReactiveDomain(), inputId, la
 #'   )
 #' }
 #' @export
-updateSliderInput <- function(session = getDefaultReactiveDomain(), inputId, label = NULL, value = NULL,
+updateSliderInput <- function(session, inputId, label = NULL, value = NULL,
   min = NULL, max = NULL, step = NULL, timeFormat = NULL, timezone = NULL)
 {
-  validate_session_object(session)
-
-  if (!is.null(value)) {
-    if (!is.null(min) && !is.null(max)) {
-      # Validate value/min/max together if all three are provided
-      tryCatch(
-        validate_slider_value(min, max, value, "updateSliderInput"),
-        error = function(err) warning(conditionMessage(err), call. = FALSE)
-      )
-    } else if (length(value) <  1 || length(value) > 2 || any(is.na(value))) {
-      # Otherwise ensure basic assumptions about value are met
-      warning(
-        "In updateSliderInput(): value must be a single value or a length-2 ",
-        "vector and cannot contain NA values.",
-        call. = FALSE
-      )
-    }
-  }
-
   # If no min/max/value is provided, we won't know the
   # type, and this will return an empty string
   dataType <- getSliderType(min, max, value)
@@ -478,7 +423,7 @@ updateSliderInput <- function(session = getDefaultReactiveDomain(), inputId, lab
   }
 
   message <- dropNulls(list(
-    label = if (!is.null(label)) processDeps(label, session),
+    label = label,
     value = formatNoSci(value),
     min = formatNoSci(min),
     max = formatNoSci(max),
@@ -494,8 +439,6 @@ updateSliderInput <- function(session = getDefaultReactiveDomain(), inputId, lab
 updateInputOptions <- function(session, inputId, label = NULL, choices = NULL,
                                selected = NULL, inline = FALSE, type = NULL,
                                choiceNames = NULL, choiceValues = NULL) {
-  validate_session_object(session)
-
   if (is.null(type)) stop("Please specify the type ('checkbox' or 'radio')")
 
   args <- normalizeChoicesArgs(choices, choiceNames, choiceValues, mustExist = FALSE)
@@ -509,11 +452,7 @@ updateInputOptions <- function(session, inputId, label = NULL, choices = NULL,
     ))
   }
 
-  message <- dropNulls(list(
-    label = if (!is.null(label)) processDeps(label, session),
-    options = options,
-    value = selected
-  ))
+  message <- dropNulls(list(label = label, options = options, value = selected))
 
   session$sendInputMessage(inputId, message)
 }
@@ -557,12 +496,9 @@ updateInputOptions <- function(session, inputId, label = NULL, choices = NULL,
 #' shinyApp(ui, server)
 #' }
 #' @export
-updateCheckboxGroupInput <- function(session = getDefaultReactiveDomain(), inputId, label = NULL,
+updateCheckboxGroupInput <- function(session, inputId, label = NULL,
   choices = NULL, selected = NULL, inline = FALSE,
-  choiceNames = NULL, choiceValues = NULL)
-{
-  validate_session_object(session)
-
+  choiceNames = NULL, choiceValues = NULL) {
   updateInputOptions(session, inputId, label, choices, selected,
                      inline, "checkbox", choiceNames, choiceValues)
 }
@@ -603,12 +539,9 @@ updateCheckboxGroupInput <- function(session = getDefaultReactiveDomain(), input
 #' shinyApp(ui, server)
 #' }
 #' @export
-updateRadioButtons <- function(session = getDefaultReactiveDomain(), inputId, label = NULL, choices = NULL,
+updateRadioButtons <- function(session, inputId, label = NULL, choices = NULL,
                                selected = NULL, inline = FALSE,
-                               choiceNames = NULL, choiceValues = NULL)
-{
-  validate_session_object(session)
-
+                               choiceNames = NULL, choiceValues = NULL) {
   # you must select at least one radio button
   if (is.null(selected)) {
     if (!is.null(choices)) selected <- choices[[1]]
@@ -658,19 +591,12 @@ updateRadioButtons <- function(session = getDefaultReactiveDomain(), inputId, la
 #' shinyApp(ui, server)
 #' }
 #' @export
-updateSelectInput <- function(session = getDefaultReactiveDomain(), inputId, label = NULL, choices = NULL,
-                              selected = NULL)
-{
-  validate_session_object(session)
-
+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, inputId, FALSE)
-  message <- dropNulls(list(
-    label = if (!is.null(label)) processDeps(label, session),
-    options = options,
-    value = selected
-  ))
+  message <- dropNulls(list(label = label, options = options, value = selected))
   session$sendInputMessage(inputId, message)
 }
 
@@ -681,12 +607,9 @@ updateSelectInput <- function(session = getDefaultReactiveDomain(), inputId, lab
 #'   `choices` into the page at once (i.e., only use the client-side
 #'   version of \pkg{selectize.js})
 #' @export
-updateSelectizeInput <- function(session = getDefaultReactiveDomain(), inputId, label = NULL, choices = NULL,
+updateSelectizeInput <- function(session, inputId, label = NULL, choices = NULL,
                                  selected = NULL, options = list(),
-                                 server = FALSE)
-{
-  validate_session_object(session)
-
+                                 server = FALSE) {
   if (length(options)) {
     res <- checkAsIs(options)
     cfg <- tags$script(
@@ -799,15 +722,12 @@ updateSelectizeInput <- function(session = getDefaultReactiveDomain(), inputId,
 #' @rdname updateSelectInput
 #' @inheritParams varSelectInput
 #' @export
-updateVarSelectInput <- function(session = getDefaultReactiveDomain(), inputId, label = NULL, data = NULL, selected = NULL) {
-  validate_session_object(session)
-
+updateVarSelectInput <- function(session, inputId, label = NULL, data = NULL, selected = NULL) {
   if (is.null(data)) {
     choices <- NULL
   } else {
     choices <- colnames(data)
   }
-
   updateSelectInput(
     session = session,
     inputId = inputId,
@@ -818,11 +738,7 @@ updateVarSelectInput <- function(session = getDefaultReactiveDomain(), inputId,
 }
 #' @rdname updateSelectInput
 #' @export
-updateVarSelectizeInput <- function(session = getDefaultReactiveDomain(), inputId, label = NULL,
-                                    data = NULL, selected = NULL, options = list(), server = FALSE)
-{
-  validate_session_object(session)
-
+updateVarSelectizeInput <- function(session, inputId, label = NULL, data = NULL, selected = NULL, options = list(), server = FALSE) {
   if (is.null(data)) {
     choices <- NULL
   } else {

R/utils-lang.R

@@ -51,199 +51,60 @@ formalsAndBody <- function(x) {
 }
 
 
-#' @describeIn createRenderFunction convert a quosure to a function.
-#' @param q Quosure of the expression `x`. When capturing expressions to create
-#'   your quosure, it is recommended to use [`rlang::enquo0()`] to not unquote
-#'   the object too early. See [`rlang::enquo0()`] for more details.
-#' @inheritParams installExprFunction
-#' @export
-quoToFunction <- function(
-  q,
-  label = sys.call(-1)[[1]],
-  ..stacktraceon = FALSE
-) {
-  func <- quoToSimpleFunction(as_quosure(q))
-  wrapFunctionLabel(func, updateFunctionLabel(label), ..stacktraceon = ..stacktraceon, dots = FALSE)
-}
-
-updateFunctionLabel <- function(label) {
-  badFnName <- "anonymous"
-  if (all(is.language(label))) {
-    # Prevent immediately invoked functions like as.language(a()())
-    if (is.language(label) && length(label) > 1) {
-      return(badFnName)
+# This function is to be called from functions like `reactive()`, `observe()`,
+# and the various render functions. It handles the following cases:
+# - The typical case where x is an unquoted expression, and `env` and `quoted`
+#   are not used.
+# - New-style metaprogramming cases, where rlang::inject() is used to inline a
+#   quosure into the AST, as in `inject(reactive(!!x))`.
+# - Old-style metaprogramming cases, where `env` and/or `quoted` are used.
+#
+# Much of the complexity is handling old-style metaprogramming cases. The code
+# in this function is more complicated because it needs to look at unevaluated
+# expressions in the _calling_ function. If this code were put directly in the
+# calling function, it would look like this:
+#
+# if (!missing(env) || !missing(quoted)) {
+#   deprecatedEnvQuotedMessage()
+#   if (!quoted) x <- substitute(x)
+#   x <- new_quosure(x, env)
+#
+# } else {
+#   x <- substitute(x)
+#   if (!is_quosure(x)) {
+#     x <- new_quosure(x, env = parent.frame())
+#   }
+# }
+#
+# In the future, the calling functions will not need to have the `env` and
+# `quoted` arguments -- `rlang::inject()` and quosures can be used instead.
+# Instead of using this function, `get_quosure()`, the caller can instead use
+# just the following code:
+#
+# x <- substitute(x)
+# if (!is_quosure(x)) {
+#   x <- new_quosure(x, env = parent.frame())
+# }
+#
+get_quosure <- function(x, env, quoted) {
+  if (!eval(substitute(missing(env)), parent.frame()) ||
+      !eval(substitute(missing(quoted)), parent.frame()))
+  {
+    deprecatedEnvQuotedMessage()
+    if (!quoted) {
+      x <- eval(substitute(substitute(x)), parent.frame())
     }
-    label <- deparse(label, width.cutoff = 500L)
-  }
-  label <- as.character(label)
-  # Prevent function calls that are over one line; (Assignments are hard to perform)
-    # Prevent immediately invoked functions like "a()()"
-  if (length(label) > 1 || grepl("(", label, fixed = TRUE)) {
-    return(badFnName)
-  }
-  if (label == "NULL") {
-    return(badFnName)
-  }
-  label
-}
+    x <- new_quosure(x, env)
 
-quoToSimpleFunction <- function(q) {
-  # Should not use `new_function(list(), get_expr(q), get_env(q))` as extra logic
-  # is done by rlang to convert the quosure to a function within `as_function(q)`
-  fun <- as_function(q)
+  } else {
+    x <- eval(substitute(substitute(x)), parent.frame())
 
-  # If the quosure is empty, then the returned function can not be called.
-  # https://github.com/r-lib/rlang/issues/1244
-  if (quo_is_missing(q)) {
-    fn_body(fun) <- quote({})
-  }
-
-  # `as_function()` returns a function that takes `...`. We need one that takes no
-  # args.
-  fn_fmls(fun) <- list()
-
-  fun
-}
-
-
-#' Convert an expression to a function
-#'
-#' `r lifecycle::badge("superseded")` Please use [`installExprFunction()`] for a better
-#' debugging experience (Shiny 0.8.0). If the `expr` and `quoted` parameters are not needed, please see
-#' [`quoToFunction()`] (Shiny 1.6.0).
-#'
-#' Similar to [installExprFunction()] but doesn't register debug hooks.
-#'
-#' @param expr A quoted or unquoted expression, or a quosure.
-#' @param env The desired environment for the function. Defaults to the
-#'   calling environment two steps back.
-#' @param quoted Is the expression quoted?
-#' @seealso [`installExprFunction()`] for the modern approach to converting an expression to a function
-#' @export
-#' @keywords internal
-exprToFunction <- function(expr, env = parent.frame(), quoted = FALSE) {
-  # If `expr` is a raw quosure, must say `quoted = TRUE`; (env is ignored)
-  # If `inject()` a quosure, env is ignored, and quoted should be FALSE (aka ignored).
-  # Make article of usage
-  # * (by joe)
-
-  if (!quoted) {
-    expr <- eval(substitute(substitute(expr)), parent.frame())
-  }
-  # MUST call with `quoted = TRUE` as exprToQuo() will not reach high enough
-  q <- exprToQuo(expr, env, quoted = TRUE)
-
-  # MUST call `as_function()`. Can NOT call `new_function()`
-  # rlang has custom logic for handling converting a quosure to a function
-  quoToSimpleFunction(q)
-}
-# For internal use only; External users should be using `exprToFunction()` or `installExprFunction()`
-# MUST be the exact same logic as `exprToFunction()`, but without the `quoToSimpleFunction()` call
-exprToQuo <- function(expr, env = parent.frame(), quoted = FALSE) {
-  if (!quoted) {
-    expr <- eval(substitute(substitute(expr)), parent.frame())
-  }
-  q <-
-    if (is_quosure(expr)) {
-      # inject()ed quosure
-      # do nothing
-      expr
-    } else if (is.language(expr) || rlang::is_atomic(expr) || is.null(expr)) {
-      # Most common case...
-      new_quosure(expr, env = env)
-    } else {
-      stop("Don't know how to convert '", class(expr)[1], "' to a function; a quosure or quoted expression was expected")
+    # At this point, x can be a quosure if rlang::inject() is used, but the
+    # typical case is that x is not a quosure.
+    if (!is_quosure(x)) {
+      x <- new_quosure(x, env = parent.frame(2L))
     }
-  q
-}
-
-#' @describeIn createRenderFunction converts a user's reactive `expr` into a
-#'   function that's assigned to a `name` in the `assign.env`.
-#'
-#' @param name The name the function should be given
-#' @param eval.env The desired environment for the function. Defaults to the
-#'   calling environment two steps back.
-#' @param assign.env The environment in which the function should be assigned.
-#' @param label A label for the object to be shown in the debugger. Defaults to
-#'   the name of the calling function.
-#' @param wrappedWithLabel,..stacktraceon Advanced use only. For stack manipulation purposes; see
-#'   [stacktrace()].
-#' @inheritParams exprToFunction
-#' @export
-installExprFunction <- function(expr, name, eval.env = parent.frame(2),
-                                quoted = FALSE,
-                                assign.env = parent.frame(1),
-                                label = sys.call(-1)[[1]],
-                                wrappedWithLabel = TRUE,
-                                ..stacktraceon = FALSE) {
-  if (!quoted) {
-    quoted <- TRUE
-    expr <- eval(substitute(substitute(expr)), parent.frame())
   }
 
-  func <- exprToFunction(expr, eval.env, quoted)
-  if (length(label) > 1) {
-    # Just in case the deparsed code is more complicated than we imagine. If we
-    # have a label with length > 1 it causes warnings in wrapFunctionLabel.
-    label <- paste0(label, collapse = "\n")
-  }
-  wrappedWithLabel <- isTRUE(wrappedWithLabel)
-  if (wrappedWithLabel) {
-    func <- wrapFunctionLabel(func, updateFunctionLabel(label), ..stacktraceon = ..stacktraceon, dots = FALSE)
-  }
-  assign(name, func, envir = assign.env)
-  if (!wrappedWithLabel) {
-    registerDebugHook(name, assign.env, label)
-  }
-
-  invisible(func)
-}
-
-# Utility function for creating a debugging label, given an expression.
-# `expr` is a quoted expression.
-# `function_name` is the name of the calling function.
-# `label` is an optional user-provided label. If NULL, it will be inferred.
-exprToLabel <- function(expr, function_name, label = NULL) {
-  srcref <- attr(expr, "srcref", exact = TRUE)
-  if (is.null(label)) {
-    label <- rexprSrcrefToLabel(
-      srcref[[1]],
-      simpleExprToFunction(expr, function_name)
-    )
-  }
-  if (length(srcref) >= 2) attr(label, "srcref") <- srcref[[2]]
-  attr(label, "srcfile") <- srcFileOfRef(srcref[[1]])
-  label
-}
-simpleExprToFunction <- function(expr, function_name) {
-  sprintf('%s(%s)', function_name, paste(deparse(expr), collapse='\n'))
-}
-
-installedFuncExpr <- function(func) {
-  fn_body(attr(func, "wrappedFunc", exact = TRUE))
-}
-
-funcToLabelBody <- function(func) {
-  paste(deparse(installedFuncExpr(func)), collapse='\n')
-}
-funcToLabel <- function(func, functionLabel, label = NULL) {
-  if (!is.null(label)) return(label)
-
-  sprintf(
-    '%s(%s)',
-    functionLabel,
-    funcToLabelBody(func)
-  )
-}
-quoToLabelBody <- function(q) {
-  paste(deparse(quo_get_expr(q)), collapse='\n')
-}
-quoToLabel <- function(q, functionLabel, label = NULL) {
-  if (!is.null(label)) return(label)
-
-  sprintf(
-    '%s(%s)',
-    functionLabel,
-    quoToLabelBody(q)
-  )
+  x
 }

R/utils-tags.R

@@ -1,21 +0,0 @@
-# Check if `x` is a tag(), tagList(), or HTML()
-# @param strict If `FALSE`, also consider a normal list() of 'tags' to be a tag list.
-isTagLike <- function(x, strict = FALSE) {
-  isTag(x) || isTagList(x, strict = strict) || isTRUE(attr(x, "html"))
-}
-
-isTag <- function(x) {
-  inherits(x, "shiny.tag")
-}
-
-isTagList <- function(x, strict = TRUE) {
-  if (strict) {
-    return(inherits(x, "shiny.tag.list"))
-  }
-
-  if (!is.list(x)) {
-    return(FALSE)
-  }
-
-  all(vapply(x, isTagLike, logical(1)))
-}

R/utils.R

@@ -2,11 +2,6 @@
 #' @include map.R
 NULL
 
-# @staticimports pkg:staticimports
-#   is_installed get_package_version system_file
-#   s3_register
-#   any_named any_unnamed
-
 #' Make a random number generator repeatable
 #'
 #' Given a function that generates random data, returns a wrapped version of
@@ -131,6 +126,34 @@ dropNullsOrEmpty <- function(x) {
   x[!vapply(x, nullOrEmpty, FUN.VALUE=logical(1))]
 }
 
+# Given a vector/list, return TRUE if any elements are named, FALSE otherwise.
+anyNamed <- function(x) {
+  # Zero-length vector
+  if (length(x) == 0) return(FALSE)
+
+  nms <- names(x)
+
+  # List with no name attribute
+  if (is.null(nms)) return(FALSE)
+
+  # List with name attribute; check for any ""
+  any(nzchar(nms))
+}
+
+# Given a vector/list, return TRUE if any elements are unnamed, FALSE otherwise.
+anyUnnamed <- function(x) {
+  # Zero-length vector
+  if (length(x) == 0) return(FALSE)
+
+  nms <- names(x)
+
+  # List with no name attribute
+  if (is.null(nms)) return(TRUE)
+
+  # List with name attribute; check for any ""
+  any(!nzchar(nms))
+}
+
 
 # Given a vector/list, returns a named vector/list (the labels will be blank).
 asNamed <- function(x) {
@@ -141,16 +164,12 @@ asNamed <- function(x) {
   x
 }
 
-empty_named_list <- function() {
-  list(a = 1)[0]
-}
-
 # Given two named vectors, join them together, and keep only the last element
 # with a given name in the resulting vector. If b has any elements with the same
 # name as elements in a, the element in a is dropped. Also, if there are any
 # duplicated names in a or b, only the last one with that name is kept.
 mergeVectors <- function(a, b) {
-  if (any_unnamed(a) || any_unnamed(b)) {
+  if (anyUnnamed(a) || anyUnnamed(b)) {
     stop("Vectors must be either NULL or have names for all elements")
   }
 
@@ -162,27 +181,15 @@ mergeVectors <- function(a, b) {
 # Sort a vector by the names of items. If there are multiple items with the
 # same name, preserve the original order of those items. For empty
 # vectors/lists/NULL, return the original value.
-sortByName <- function(x, method = "auto") {
-  if (any_unnamed(x))
+sortByName <- function(x) {
+  if (anyUnnamed(x))
     stop("All items must be named")
 
   # Special case for empty vectors/lists, and NULL
   if (length(x) == 0)
     return(x)
 
-  # Must provide consistent sort order
-  #  https://github.com/rstudio/shinytest/issues/409
-  # Using a flag in the snapshot url to determine the method
-  # `method="radix"` uses `C` locale, which is consistent across platforms
-  # Even if two platforms share `en_us.UTF-8`, they may not sort consistently
-  #  https://blog.zhimingwang.org/macos-lc_collate-hunt
-  #  (macOS) $ LC_ALL=en_US.UTF-8 sort <<<$'python-dev\npython3-dev'
-  #  python-dev
-  #  python3-dev
-  #  (Linux) $ LC_ALL=en_US.UTF-8 sort <<<$'python-dev\npython3-dev'
-  #  python3-dev
-  #  python-dev
-  x[order(names(x), method = method)]
+  x[order(names(x))]
 }
 
 # Sort a vector. If a character vector, sort using C locale, which is consistent
@@ -195,6 +202,10 @@ sort_c <- function(x, ...) {
   sort(x, method = "radix", ...)
 }
 
+# Base R isFALSE function was added in R 3.5.0.
+is_false <- function(x) {
+  identical(x, FALSE)
+}
 
 # 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
@@ -393,6 +404,164 @@ getContentType <- function(file, defaultType = 'application/octet-stream') {
   mime::guess_type(file, unknown = defaultType, subtype = subtype)
 }
 
+# Create a zero-arg function from a quoted expression and environment
+# @examples
+# makeFunction(body=quote(print(3)))
+makeFunction <- function(args = pairlist(), body, env = parent.frame()) {
+  eval(call("function", args, body), env)
+}
+
+#' Convert an expression to a function
+#'
+#' This is to be called from another function, because it will attempt to get
+#' an unquoted expression from two calls back. Note: as of Shiny 1.6.0, it is
+#' recommended to use [quoToFunction()] instead.
+#'
+#' If expr is a quoted expression, then this just converts it to a function.
+#' If expr is a function, then this simply returns expr (and prints a
+#'   deprecation message).
+#' If expr was a non-quoted expression from two calls back, then this will
+#'   quote the original expression and convert it to a function.
+#
+#' @param expr A quoted or unquoted expression, or a function.
+#' @param env The desired environment for the function. Defaults to the
+#'   calling environment two steps back.
+#' @param quoted Is the expression quoted?
+#'
+#' @examples
+#' # Example of a new renderer, similar to renderText
+#' # This is something that toolkit authors will do
+#' renderTriple <- function(expr, env=parent.frame(), quoted=FALSE) {
+#'   # Convert expr to a function
+#'   func <- shiny::exprToFunction(expr, env, quoted)
+#'
+#'   function() {
+#'     value <- func()
+#'     paste(rep(value, 3), collapse=", ")
+#'   }
+#' }
+#'
+#'
+#' # Example of using the renderer.
+#' # This is something that app authors will do.
+#' values <- reactiveValues(A="text")
+#'
+#' \dontrun{
+#' # Create an output object
+#' output$tripleA <- renderTriple({
+#'   values$A
+#' })
+#' }
+#'
+#' # At the R console, you can experiment with the renderer using isolate()
+#' tripleA <- renderTriple({
+#'   values$A
+#' })
+#'
+#' isolate(tripleA())
+#' # "text, text, text"
+#' @export
+exprToFunction <- function(expr, env=parent.frame(), quoted=FALSE) {
+  if (!quoted) {
+    expr <- eval(substitute(substitute(expr)), parent.frame())
+  }
+
+  # expr is a quoted expression
+  makeFunction(body=expr, env=env)
+}
+
+#' Install an expression as a function
+#'
+#' Installs an expression in the given environment as a function, and registers
+#' debug hooks so that breakpoints may be set in the function. Note: as of
+#' Shiny 1.6.0, it is recommended to use [quoToFunction()] instead.
+#'
+#' This function can replace `exprToFunction` as follows: we may use
+#' `func <- exprToFunction(expr)` if we do not want the debug hooks, or
+#' `installExprFunction(expr, "func")` if we do. Both approaches create a
+#' function named `func` in the current environment.
+#'
+#' @seealso Wraps [exprToFunction()]; see that method's documentation
+#'   for more documentation and examples.
+#'
+#' @param expr A quoted or unquoted expression
+#' @param name The name the function should be given
+#' @param eval.env The desired environment for the function. Defaults to the
+#'   calling environment two steps back.
+#' @param quoted Is the expression quoted?
+#' @param assign.env The environment in which the function should be assigned.
+#' @param label A label for the object to be shown in the debugger. Defaults to
+#'   the name of the calling function.
+#' @param wrappedWithLabel,..stacktraceon Advanced use only. For stack manipulation purposes; see
+#'   [stacktrace()].
+#' @export
+installExprFunction <- function(expr, name, eval.env = parent.frame(2),
+                                quoted = FALSE,
+                                assign.env = parent.frame(1),
+                                label = deparse(sys.call(-1)[[1]]),
+                                wrappedWithLabel = TRUE,
+                                ..stacktraceon = FALSE) {
+  if (!quoted) {
+    quoted <- TRUE
+    expr <- eval(substitute(substitute(expr)), parent.frame())
+  }
+
+  func <- exprToFunction(expr, eval.env, quoted)
+  if (length(label) > 1) {
+    # Just in case the deparsed code is more complicated than we imagine. If we
+    # have a label with length > 1 it causes warnings in wrapFunctionLabel.
+    label <- paste0(label, collapse = "\n")
+  }
+  if (wrappedWithLabel) {
+    func <- wrapFunctionLabel(func, label, ..stacktraceon = ..stacktraceon)
+  } else {
+    registerDebugHook(name, assign.env, label)
+  }
+  assign(name, func, envir = assign.env)
+}
+
+#' Convert a quosure to a function for a Shiny render function
+#'
+#' This takes a quosure and label, and wraps them into a function that should be
+#' passed to [createRenderFunction()] or [markRenderFunction()].
+#'
+#' This function was added in Shiny 1.6.0. Previously, it was recommended to use
+#' [installExprFunction()] or [exprToFunction()] in render functions, but now we
+#' recommend using [quoToFunction()], because it does not require `env` and
+#' `quoted` arguments -- that information is captured by quosures provided by
+#' \pkg{rlang}.
+#'
+#' @param q A quosure.
+#' @inheritParams installExprFunction
+#' @seealso [createRenderFunction()] for example usage.
+#'
+#' @export
+quoToFunction <- function(q, label, ..stacktraceon = FALSE) {
+  q <- as_quosure(q)
+  # Use new_function() instead of as_function(), because as_function() adds an
+  # extra parent environment. (This may not actually be a problem, though.)
+  func <- new_function(NULL, get_expr(q), get_env(q))
+  wrapFunctionLabel(func, label, ..stacktraceon = ..stacktraceon)
+}
+
+
+# Utility function for creating a debugging label, given an expression.
+# `expr` is a quoted expression.
+# `function_name` is the name of the calling function.
+# `label` is an optional user-provided label. If NULL, it will be inferred.
+exprToLabel <- function(expr, function_name, label = NULL) {
+  srcref <- attr(expr, "srcref", exact = TRUE)
+  if (is.null(label)) {
+    label <- rexprSrcrefToLabel(
+      srcref[[1]],
+      sprintf('%s(%s)', function_name, paste(deparse(expr), collapse = '\n'))
+    )
+  }
+  if (length(srcref) >= 2) attr(label, "srcref") <- srcref[[2]]
+  attr(label, "srcfile") <- srcFileOfRef(srcref[[1]])
+  label
+}
+
 #' Parse a GET query string from a URL
 #'
 #' Returns a named list of key-value pairs.
@@ -484,7 +653,7 @@ shinyCallingHandlers <- function(expr) {
   withCallingHandlers(captureStackTraces(expr),
     error = function(e) {
       # Don't intercept shiny.silent.error (i.e. validation errors)
-      if (cnd_inherits(e, "shiny.silent.error"))
+      if (inherits(e, "shiny.silent.error"))
         return()
 
       handle <- getOption('shiny.error')
@@ -493,6 +662,7 @@ shinyCallingHandlers <- function(expr) {
   )
 }
 
+
 #' Register a function with the debugger (if one is active).
 #'
 #' Call this function after exprToFunction to give any active debugger a hook
@@ -770,45 +940,22 @@ formatNoSci <- function(x) {
   format(x, scientific = FALSE, digits = 15)
 }
 
-# A simple getter/setting to track the last time the auto-reload process
-# updated. This value is used by `cachedFuncWithFile()` when auto-reload is
-# enabled to reload app/ui/server files when watched supporting files change.
-cachedAutoReloadLastChanged <- local({
-  last_update <- 0
-
-  list(
-    set = function() {
-      last_update <<- as.integer(Sys.time())
-      invisible(last_update)
-    },
-    get = function() {
-      last_update
-    }
-  )
-})
-
 # Returns a function that calls the given func and caches the result for
 # subsequent calls, unless the given file's mtime changes.
 cachedFuncWithFile <- function(dir, file, func, case.sensitive = FALSE) {
-  dir <- normalizePath(dir, mustWork = TRUE)
-
+  dir <- normalizePath(dir, mustWork=TRUE)
+  mtime <- NA
   value <- NULL
-  last_mtime_file <- NA
-  last_autoreload <- 0
-
   function(...) {
-    fname <- if (case.sensitive) { 
-      file.path(dir, file) 
-    } else {
+    fname <- if (case.sensitive)
+      file.path(dir, file)
+    else
       file.path.ci(dir, file)
-    }
 
     now <- file.info(fname)$mtime
-    autoreload <- last_autoreload < cachedAutoReloadLastChanged$get()
-    if (autoreload || !identical(last_mtime_file, now)) {
+    if (!identical(mtime, now)) {
       value <<- func(fname, ...)
-      last_mtime_file <<- now
-      last_autoreload <<- cachedAutoReloadLastChanged$get()
+      mtime <<- now
     }
     value
   }
@@ -964,39 +1111,52 @@ reactiveStop <- function(message = "", class = NULL) {
 
 #' Validate input values and other conditions
 #'
-#' @description
-#' `validate()` provides convenient mechanism for validating that an output
-#' has all the inputs necessary for successful rendering. It takes any number
-#' of (unnamed) arguments, each representing a condition to test. If any
-#' of condition fails (i.e. is not ["truthy"][isTruthy]), a special type of
-#' error is signaled to stop execution. If this error is not handled by
-#' application-specific code, it is displayed to the user by Shiny.
+#' For an output rendering function (e.g. [renderPlot()]), you may
+#' need to check that certain input values are available and valid before you
+#' can render the output. `validate` gives you a convenient mechanism for
+#' doing so.
 #'
-#' If you use `validate()` in a [reactive()] validation failures will
-#' automatically propagate to outputs that use the reactive.
+#' The `validate` function takes any number of (unnamed) arguments, each of
+#' which represents a condition to test. If any of the conditions represent
+#' failure, then a special type of error is signaled which stops execution. If
+#' this error is not handled by application-specific code, it is displayed to
+#' the user by Shiny.
 #'
-#' @section `need()`:
-#' An easy way to provide arguments to `validate()` is to use `need()`, which
-#' takes an expression and a string. If the expression is not
-#' ["truthy"][isTruthy] then the string will be used as the error message.
+#' An easy way to provide arguments to `validate` is to use the `need`
+#' function, which takes an expression and a string; if the expression is
+#' considered a failure, then the string will be used as the error message. The
+#' `need` function considers its expression to be a failure if it is any of
+#' the following:
 #'
-#' If "truthiness" is flexible for your use case, you'll need to explicitly
-#' generate a logical values. For example, if you want allow `NA` but not
-#' `NULL`, you can `!is.null(input$foo)`.
-#'
-#' If you need validation logic that differs significantly from `need()`, you
-#' can create your own validation test functions. A passing test should return
-#' `NULL`. A failing test should return either a string providing the error
-#' to display to the user, or if the failure should happen silently, `FALSE`.
-#'
-#' Alternatively you can use `validate()` within an `if` statement, which is
-#' particularly useful for more complex conditions:
-#'
-#' ```
-#' if (input$x < 0 && input$choice == "positive") {
-#'   validate("If choice is positive then x must be greater than 0")
+#' \itemize{
+#'   \item{`FALSE`}
+#'   \item{`NULL`}
+#'   \item{`""`}
+#'   \item{An empty atomic vector}
+#'   \item{An atomic vector that contains only missing values}
+#'   \item{A logical vector that contains all `FALSE` or missing values}
+#'   \item{An object of class `"try-error"`}
+#'   \item{A value that represents an unclicked [actionButton()]}
 #' }
-#' ```
+#'
+#' If any of these values happen to be valid, you can explicitly turn them to
+#' logical values. For example, if you allow `NA` but not `NULL`, you
+#' can use the condition `!is.null(input$foo)`, because `!is.null(NA)
+#' == TRUE`.
+#'
+#' If you need validation logic that differs significantly from `need`, you
+#' can create other validation test functions. A passing test should return
+#' `NULL`. A failing test should return an error message as a
+#' single-element character vector, or if the failure should happen silently,
+#' `FALSE`.
+#'
+#' Because validation failure is signaled as an error, you can use
+#' `validate` in reactive expressions, and validation failures will
+#' automatically propagate to outputs that use the reactive expression. In
+#' other words, if reactive expression `a` needs `input$x`, and two
+#' outputs use `a` (and thus depend indirectly on `input$x`), it's
+#' not necessary for the outputs to validate `input$x` explicitly, as long
+#' as `a` does validate it.
 #'
 #' @param ... A list of tests. Each test should equal `NULL` for success,
 #'   `FALSE` for silent failure, or a string for failure with an error
@@ -1011,7 +1171,7 @@ reactiveStop <- function(message = "", class = NULL) {
 #'
 #' ui <- fluidPage(
 #'   checkboxGroupInput('in1', 'Check some letters', choices = head(LETTERS)),
-#'   selectizeInput('in2', 'Select a state', choices = c("", state.name)),
+#'   selectizeInput('in2', 'Select a state', choices = state.name),
 #'   plotOutput('plot')
 #' )
 #'
@@ -1029,7 +1189,7 @@ reactiveStop <- function(message = "", class = NULL) {
 #'
 #' }
 validate <- function(..., errorClass = character(0)) {
-  results <- sapply(list2(...), function(x) {
+  results <- sapply(list(...), function(x) {
     # Detect NULL or NA
     if (is.null(x))
       return(NA_character_)
@@ -1073,7 +1233,7 @@ need <- function(expr, message = paste(label, "must be provided"), label) {
 
 #' Check for required values
 #'
-#' Ensure that values are available (["truthy"][isTruthy]) before proceeding
+#' Ensure that values are available ("truthy"--see Details) before proceeding
 #' with a calculation or action. If any of the given values is not truthy, the
 #' operation is stopped by raising a "silent" exception (not logged by Shiny,
 #' nor displayed in the Shiny app's UI).
@@ -1082,13 +1242,11 @@ need <- function(expr, message = paste(label, "must be provided"), label) {
 #' is to call it like a statement (ignoring its return value) before attempting
 #' operations using the required values:
 #'
-#' ```
-#' rv <- reactiveValues(state = FALSE)
+#' \preformatted{rv <- reactiveValues(state = FALSE)
 #' r <- reactive({
 #'   req(input$a, input$b, rv$state)
 #'   # Code that uses input$a, input$b, and/or rv$state...
-#' })
-#' ```
+#' })}
 #'
 #' In this example, if `r()` is called and any of `input$a`,
 #' `input$b`, and `rv$state` are `NULL`, `FALSE`, `""`,
@@ -1097,29 +1255,62 @@ need <- function(expr, message = paste(label, "must be provided"), label) {
 #'
 #' The second is to use it to wrap an expression that must be truthy:
 #'
-#' ```
-#' output$plot <- renderPlot({
+#' \preformatted{output$plot <- renderPlot({
 #'   if (req(input$plotType) == "histogram") {
 #'     hist(dataset())
 #'   } else if (input$plotType == "scatter") {
 #'     qplot(dataset(), aes(x = x, y = y))
 #'   }
-#' })
-#' ```
+#' })}
 #'
 #' In this example, `req(input$plotType)` first checks that
 #' `input$plotType` is truthy, and if so, returns it. This is a convenient
 #' way to check for a value "inline" with its first use.
 #'
-#' @section Using `req(FALSE)`:
+#' **Truthy and falsy values**
+#'
+#' The terms "truthy" and "falsy" generally indicate whether a value, when
+#' coerced to a [base::logical()], is `TRUE` or `FALSE`. We use
+#' the term a little loosely here; our usage tries to match the intuitive
+#' notions of "Is this value missing or available?", or "Has the user provided
+#' an answer?", or in the case of action buttons, "Has the button been
+#' clicked?".
+#'
+#' For example, a `textInput` that has not been filled out by the user has
+#' a value of `""`, so that is considered a falsy value.
+#'
+#' To be precise, `req` considers a value truthy *unless* it is one
+#' of:
+#'
+#' \itemize{
+#'   \item{`FALSE`}
+#'   \item{`NULL`}
+#'   \item{`""`}
+#'   \item{An empty atomic vector}
+#'   \item{An atomic vector that contains only missing values}
+#'   \item{A logical vector that contains all `FALSE` or missing values}
+#'   \item{An object of class `"try-error"`}
+#'   \item{A value that represents an unclicked [actionButton()]}
+#' }
+#'
+#' Note in particular that the value `0` is considered truthy, even though
+#' `as.logical(0)` is `FALSE`.
+#'
+#' If the built-in rules for truthiness do not match your requirements, you can
+#' always work around them. Since `FALSE` is falsy, you can simply provide
+#' the results of your own checks to `req`:
+#'
+#' `req(input$a != 0)`
+#'
+#' **Using `req(FALSE)`**
 #'
 #' You can use `req(FALSE)` (i.e. no condition) if you've already performed
 #' all the checks you needed to by that point and just want to stop the reactive
-#' chain now. There is no advantage to this, except perhaps ease of readability
+#' chain now. There is no advantange to this, except perhaps ease of readibility
 #' if you have a complicated condition to check for (or perhaps if you'd like to
 #' divide your condition into nested `if` statements).
 #'
-#' @section Using `cancelOutput = TRUE`:
+#' **Using `cancelOutput = TRUE`**
 #'
 #' When `req(..., cancelOutput = TRUE)` is used, the "silent" exception is
 #' also raised, but it is treated slightly differently if one or more outputs are
@@ -1137,10 +1328,8 @@ need <- function(expr, message = paste(label, "must be provided"), label) {
 #' @param ... Values to check for truthiness.
 #' @param cancelOutput If `TRUE` and an output is being evaluated, stop
 #'   processing as usual but instead of clearing the output, leave it in
-#'   whatever state it happens to be in. If `"progress"`, do the same as `TRUE`,
-#'   but also keep the output in recalculating state; this is intended for cases
-#'   when an in-progress calculation will not be completed in this reactive
-#'   flush cycle, but is still expected to provide a result in the future.
+#'   whatever state it happens to be in.
+#' @param x An expression whose truthiness value we want to determine
 #' @return The first value that was passed in.
 #' @export
 #' @examples
@@ -1172,8 +1361,6 @@ req <- function(..., cancelOutput = FALSE) {
     if (!isTruthy(item)) {
       if (isTRUE(cancelOutput)) {
         cancelOutput()
-      } else if (identical(cancelOutput, "progress")) {
-        reactiveStop(class = "shiny.output.progress")
       } else {
         reactiveStop(class = "validation")
       }
@@ -1232,47 +1419,23 @@ cancelOutput <- function() {
 #
 # Can be used to facilitate short-circuit eval on dots.
 dotloop <- function(fun_, ...) {
-  for (i in seq_len(nargs() - 1)) {
+  for (i in 1:(nargs()-1)) {
     fun_(eval(as.symbol(paste0("..", i))))
   }
   invisible()
 }
 
-#' Truthy and falsy values
-#'
-#' The terms "truthy" and "falsy" generally indicate whether a value, when
-#' coerced to a [base::logical()], is `TRUE` or `FALSE`. We use
-#' the term a little loosely here; our usage tries to match the intuitive
-#' notions of "Is this value missing or available?", or "Has the user provided
-#' an answer?", or in the case of action buttons, "Has the button been
-#' clicked?".
-#'
-#' For example, a `textInput` that has not been filled out by the user has
-#' a value of `""`, so that is considered a falsy value.
-#'
-#' To be precise, a value is truthy *unless* it is one of:
-#'
-#' * `FALSE`
-#' * `NULL`
-#' * `""`
-#' * An empty atomic vector
-#' * An atomic vector that contains only missing values
-#' * A logical vector that contains all `FALSE` or missing values
-#' * An object of class `"try-error"`
-#' * A value that represents an unclicked [actionButton()]
-#'
-#' Note in particular that the value `0` is considered truthy, even though
-#' `as.logical(0)` is `FALSE`.
-#'
-#' @param x An expression whose truthiness value we want to determine
 #' @export
+#' @rdname req
 isTruthy <- function(x) {
-  if (is.null(x))
-    return(FALSE)
   if (inherits(x, 'try-error'))
     return(FALSE)
+
   if (!is.atomic(x))
     return(TRUE)
+
+  if (is.null(x))
+    return(FALSE)
   if (length(x) == 0)
     return(FALSE)
   if (all(is.na(x)))
@@ -1340,7 +1503,7 @@ checkEncoding <- function(file) {
   if (identical(charToRaw(readChar(file, 3L, TRUE)), charToRaw('\UFEFF'))) {
     warning('You should not include the Byte Order Mark (BOM) in ', file, '. ',
             'Please re-save it in UTF-8 without BOM. See ',
-            'https://shiny.rstudio.com/articles/unicode.html for more info.')
+            'http://shiny.rstudio.com/articles/unicode.html for more info.')
     return('UTF-8-BOM')
   }
   x <- readChar(file, size, useBytes = TRUE)
@@ -1452,37 +1615,21 @@ dateYMD <- function(date = NULL, argName = "value") {
 # function which calls the original function using the specified name. This can
 # be helpful for profiling, because the specified name will show up on the stack
 # trace.
-wrapFunctionLabel <- function(func, name, ..stacktraceon = FALSE, dots = TRUE) {
+wrapFunctionLabel <- function(func, name, ..stacktraceon = FALSE) {
   if (name == "name" || name == "func" || name == "relabelWrapper") {
     stop("Invalid name for wrapFunctionLabel: ", name)
   }
-  if (nchar(name, "bytes") > 10000) {
-    # Max variable length in R is 10000 bytes. Truncate to a shorter number of
-    # chars because some characters could be multi-byte.
-    name <- substr(name, 1, 5000)
-  }
-
   assign(name, func, environment())
   registerDebugHook(name, environment(), name)
 
-  if (isTRUE(dots)) {
-    if (..stacktraceon) {
-      # We need to wrap the `...` in `!!quote(...)` so that R CMD check won't
-      # complain about "... may be used in an incorrect context"
-      body <- expr({ ..stacktraceon..((!!name)(!!quote(...))) })
-    } else {
-      body <- expr({ (!!name)(!!quote(...)) })
-    }
-    relabelWrapper <- new_function(pairlist2(... =), body, environment())
+  if (..stacktraceon) {
+    # We need to wrap the `...` in `!!quote(...)` so that R CMD check won't
+    # complain about "... may be used in an incorrect context"
+    body <- expr({ ..stacktraceon..((!!name)(!!quote(...))) })
   } else {
-    # Same logic as when `dots = TRUE`, but without the `...`
-    if (..stacktraceon) {
-      body <- expr({ ..stacktraceon..((!!name)()) })
-    } else {
-      body <- expr({ (!!name)() })
-    }
-    relabelWrapper <- new_function(list(), body, environment())
+    body <- expr({ (!!name)(!!quote(...)) })
   }
+  relabelWrapper <- new_function(pairlist2(... =), body, environment())
 
   # Preserve the original function that was passed in; is used for caching.
   attr(relabelWrapper, "wrappedFunc") <- func
@@ -1632,10 +1779,7 @@ getSliderType <- function(min, max, value) {
     else                            "number"
   }))
   if (length(type) > 1) {
-    rlang::abort(c(
-      "Type mismatch for `min`, `max`, and `value`.",
-      "All values must either be numeric, Date, or POSIXt."
-    ))
+    stop("Type mismatch for `min`, `max`, and `value`. Each must be Date, POSIXt, or number.")
   }
   type[[1]]
 }
@@ -1736,20 +1880,24 @@ findEnclosingApp <- function(path = ".") {
   }
 }
 
-# Until `rlang::cnd_inherits()` is on CRAN
-cnd_inherits <- function(cnd, class) {
-  cnd_some(cnd, ~ inherits(.x, class))
-}
-cnd_some <- function(.cnd, .p, ...) {
-  .p <- rlang::as_function(.p)
-
-  while (rlang::is_condition(.cnd)) {
-    if (.p(.cnd, ...)) {
-      return(TRUE)
-    }
-
-    .cnd <- .cnd$parent
+# 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)
   }
-
-  FALSE
+  installed && isTRUE(utils::packageVersion(package) >= version)
 }
+
+
+# cached version of utils::packageVersion("shiny")
+shinyPackageVersion <- local({
+  version <- NULL
+  function() {
+    if (is.null(version)) {
+      version <<- utils::packageVersion("shiny")
+    }
+    version
+  }
+})

R/version_bs_date_picker.R

@@ -1,2 +0,0 @@
-# Generated by tools/updateBootstrapDatepicker.R; do not edit by hand
-version_bs_date_picker <- "1.10.0"

R/version_ion_range_slider.R

@@ -1,2 +0,0 @@
-# Generated by tools/updateIonRangeSlider.R; do not edit by hand
-version_ion_range_slider <- "2.3.1"

R/version_jquery.R

@@ -1,2 +0,0 @@
-# Generated by tools/updatejQuery.R; do not edit by hand
-version_jquery <- "3.7.1"

R/version_jqueryui.R

@@ -1,2 +0,0 @@
-# Generated by tools/updatejQueryUI.R; do not edit by hand
-version_jqueryui <- "1.14.1"

R/version_selectize.R

@@ -1,2 +0,0 @@
-# Generated by tools/updateSelectize.R; do not edit by hand
-version_selectize <- "0.15.2"

R/version_strftime.R

@@ -1,2 +0,0 @@
-# Generated by tools/updateStrftime.R; do not edit by hand
-version_strftime <- "0.9.2"

README.md

@@ -2,67 +2,58 @@
 
 <!-- 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/actions/workflows/R-CMD-check.yaml/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://forum.posit.co/new-topic?category=shiny&tags=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)
 
 <!-- badges: end -->
 
-Easily build rich and productive interactive web apps in R &mdash; no HTML/CSS/JavaScript required.
+Shiny is a new package from RStudio that makes it incredibly easy to build interactive web applications with R.
+
+For an introduction and examples, visit the [Shiny Dev Center](http://shiny.rstudio.com/).
+
+If you have general questions about using Shiny, please use the [RStudio Community website](https://community.rstudio.com). For bug reports, please use the [issue tracker](https://github.com/rstudio/shiny/issues).
 
 ## Features
 
-* An intuitive and extensible [reactive programming](https://en.wikipedia.org/wiki/Reactive_programming) model which makes it easy to transform existing R code into a "live app" where outputs automatically react to new user input.
-  * Compared to event-based programming, reactivity allows Shiny to do the minimum amount of work when input(s) change, and allows humans to more easily reason about complex [MVC logic](https://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93controller).
-* A prebuilt set of highly sophisticated, customizable, and easy-to-use widgets (e.g., plots, tables, sliders, dropdowns, date pickers, and more).
-* An attractive default look based on [Bootstrap](https://getbootstrap.com/) which can also be easily customized with the [bslib](https://github.com/rstudio/bslib) package or avoided entirely with more direct R bindings to HTML/CSS/JavaScript.
-* Seamless integration with [R Markdown](https://shiny.rstudio.com/articles/interactive-docs.html), making it easy to embed numerous applications natively within a larger dynamic document.
-* Tools for improving and monitoring performance, including native support for [async programming](https://posit.co/blog/shiny-1-1-0/), [caching](https://talks.cpsievert.me/20201117), [load testing](https://rstudio.github.io/shinyloadtest/), and more.
-* [Modules](https://shiny.rstudio.com/articles/modules.html): a framework for reducing code duplication and complexity.
-* An ability to [bookmark application state](https://shiny.rstudio.com/articles/bookmarking-state.html) and/or [generate code to reproduce output(s)](https://github.com/rstudio/shinymeta).
-* A rich ecosystem of extension packages for more [custom widgets](http://www.htmlwidgets.org/), [input validation](https://github.com/rstudio/shinyvalidate), [unit testing](https://github.com/rstudio/shinytest), and more.
+* Build useful web applications with only a few lines of code&mdash;no JavaScript required.
+* Shiny applications are automatically "live" in the same way that spreadsheets are live. Outputs change instantly as users modify inputs, without requiring a reload of the browser.
+* Shiny user interfaces can be built entirely using R, or can be written directly in HTML, CSS, and JavaScript for more flexibility.
+* Works in any R environment (Console R, Rgui for Windows or Mac, ESS, StatET, RStudio, etc.).
+* Attractive default UI theme based on [Bootstrap](http://getbootstrap.com/).
+* A highly customizable slider widget with built-in support for animation.
+* Prebuilt output widgets for displaying plots, tables, and printed output of R objects.
+* Fast bidirectional communication between the web browser and R using the [httpuv](https://github.com/rstudio/httpuv) package.
+* Uses a [reactive](http://en.wikipedia.org/wiki/Reactive_programming) programming model that eliminates messy event handling code, so you can focus on the code that really matters.
+* Develop and redistribute your own Shiny widgets that other developers can easily drop into their own applications (coming soon!).
 
 ## Installation
 
-To install the stable version from CRAN:
+To install the stable version from CRAN, simply run the following from an R console:
 
 ```r
 install.packages("shiny")
 ```
 
-## Getting Started
-
-Once installed, load the library and run an example:
+To install the latest development builds directly from GitHub, run this instead:
 
 ```r
-library(shiny)
-# Launches an app, with the app's source code included
-runExample("06_tabsets")
-# Lists more prepackaged examples
-runExample()
+if (!require("remotes"))
+  install.packages("remotes")
+remotes::install_github("rstudio/shiny")
 ```
 
-For more examples and inspiration, check out the [Shiny User Gallery](https://shiny.rstudio.com/gallery/).
+## Getting Started
 
-For help with learning fundamental Shiny programming concepts, check out the [Mastering Shiny](https://mastering-shiny.org/) book and the [Shiny Tutorial](https://shiny.rstudio.com/tutorial/). The former is currently more up-to-date with modern Shiny features, whereas the latter takes a deeper, more visual, dive into fundamental concepts.
+To learn more we highly recommend you check out the [Shiny Tutorial](http://shiny.rstudio.com/tutorial/). The tutorial explains the framework in-depth, walks you through building a simple application, and includes extensive annotated examples.
 
-## Join the conversation
+## Development notes
 
-If you want to chat about Shiny, meet other developers, or help us decide what to work on next, [join us on Discord](https://discord.com/invite/yMGCamUMnS).
+The Javascript code in Shiny is minified using tools that run on Node.js. See the tools/ directory for more information.
 
-## Getting Help
+## Guidelines for contributing
 
-To ask a question about Shiny, please use the [RStudio Community website](https://forum.posit.co/new-topic?category=shiny&tags=shiny).
-
-For bug reports, please use the [issue tracker](https://github.com/rstudio/shiny/issues) and also keep in mind that by [writing a good bug report](https://github.com/rstudio/shiny/wiki/Writing-Good-Bug-Reports), you're more likely to get help with your problem.
-
-## Contributing
-
-We welcome contributions to the **shiny** package. Please see our [CONTRIBUTING.md](https://github.com/rstudio/shiny/blob/main/.github/CONTRIBUTING.md) file for detailed guidelines of how to contribute.
+We welcome contributions to the **shiny** package. Please see our [CONTRIBUTING.md](https://github.com/rstudio/shiny/blob/master/.github/CONTRIBUTING.md) file for detailed guidelines of how to contribute.
 
 ## License
 
 The shiny package as a whole is licensed under the GPLv3. See the [LICENSE](LICENSE) file for more details.
-
-## R version support
-
-Shiny is supported on the latest release version of R, as well as the previous four minor release versions of R. For example, if the latest release R version is 4.3, then that version is supported, as well as 4.2, 4.1, 4.0, 3.6.

cran-comments.md

@@ -1,40 +0,0 @@
-## revdepcheck results
-
-We checked 1278 reverse dependencies (1277 from CRAN + 1 from Bioconductor), comparing R CMD check results across CRAN and dev versions of shiny.
-
- * We saw 2 new problems (NOTEs only)
- * We failed to check 19 packages due to installation issues
-
-Issues with CRAN packages are summarised below.
-
-### New problems
-
-R CMD check displayed NOTEs for two packages, unrelated to changes in shiny.
-
-* HH
-  checking installed package size ... NOTE
-
-* PopED
-  checking installed package size ... NOTE
-
-### Failed to check
-
-* animalEKF
-* AovBay
-* Certara.VPCResults
-* chipPCR
-* ctsem
-* dartR.sim
-* diveR
-* gap
-* jsmodule
-* loon.shiny
-* robmedExtra
-* rstanarm
-* SensMap
-* Seurat
-* shinyTempSignal
-* Signac
-* statsr
-* TestAnaAPP
-* tidyvpc

eslint.config.mjs

@@ -1,108 +0,0 @@
-import typescriptEslint from "@typescript-eslint/eslint-plugin";
-import prettier from "eslint-plugin-prettier";
-import unicorn from "eslint-plugin-unicorn";
-import globals from "globals";
-import tsParser from "@typescript-eslint/parser";
-import path from "node:path";
-import { fileURLToPath } from "node:url";
-import js from "@eslint/js";
-import { FlatCompat } from "@eslint/eslintrc";
-
-const __filename = fileURLToPath(import.meta.url);
-const __dirname = path.dirname(__filename);
-const compat = new FlatCompat({
-    baseDirectory: __dirname,
-    recommendedConfig: js.configs.recommended,
-    allConfig: js.configs.all
-});
-
-export default [{
-    ignores: ["**/*.d.ts"],
-}, ...compat.extends(
-    "eslint:recommended",
-    "plugin:@typescript-eslint/recommended",
-    "plugin:prettier/recommended",
-), {
-    plugins: {
-        "@typescript-eslint": typescriptEslint,
-        prettier,
-        unicorn,
-    },
-
-    languageOptions: {
-        globals: {
-            ...globals.browser,
-            Atomics: "readonly",
-            SharedArrayBuffer: "readonly",
-        },
-
-        parser: tsParser,
-        ecmaVersion: 2021,
-        sourceType: "module",
-
-        parserOptions: {
-            project: ["./tsconfig.json"],
-        },
-    },
-
-    rules: {
-        "@typescript-eslint/explicit-function-return-type": "off",
-        "@typescript-eslint/no-explicit-any": "off",
-        "@typescript-eslint/explicit-module-boundary-types": "error",
-        "default-case": ["error"],
-        "linebreak-style": ["error", "unix"],
-        quotes: ["error", "double", "avoid-escape"],
-        semi: ["error", "always"],
-        "dot-location": ["error", "property"],
-        camelcase: ["off"],
-
-        "unicorn/filename-case": ["error", {
-            case: "camelCase",
-        }],
-
-        "@typescript-eslint/array-type": ["error", {
-            default: "array-simple",
-            readonly: "array-simple",
-        }],
-
-        "@typescript-eslint/consistent-indexed-object-style": ["error", "index-signature"],
-        "@typescript-eslint/consistent-type-imports": "error",
-        "@typescript-eslint/no-floating-promises": "error",
-
-        "@typescript-eslint/naming-convention": ["error", {
-            selector: "default",
-            format: ["camelCase"],
-        }, {
-            selector: "method",
-            modifiers: ["private"],
-            format: ["camelCase"],
-            leadingUnderscore: "require",
-        }, {
-            selector: "method",
-            modifiers: ["protected"],
-            format: ["camelCase"],
-            leadingUnderscore: "require",
-        }, {
-            selector: "variable",
-            format: ["camelCase"],
-            trailingUnderscore: "forbid",
-            leadingUnderscore: "forbid",
-        }, {
-            selector: "parameter",
-            format: ["camelCase"],
-            trailingUnderscore: "allow",
-            leadingUnderscore: "forbid",
-        }, {
-            selector: ["enum", "enumMember"],
-            format: ["PascalCase"],
-        }, {
-            selector: "typeLike",
-            format: ["PascalCase"],
-
-            custom: {
-                regex: "(t|T)ype$",
-                match: false,
-            },
-        }],
-    },
-}];

inst/app_template/tests/shinytest.R

@@ -0,0 +1,2 @@
+library(shinytest)
+expect_pass(testApp("../", suffix = osName()))

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

@@ -1 +1,9 @@
-shinytest2::test_app()
+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/setup-shinytest2.R

@@ -1,2 +0,0 @@
-# Load application support files into testing environment
-shinytest2::load_app_env()

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

@@ -1,3 +1,5 @@
+context("exampleModuleServer")
+
 # See ?testServer for more information
 testServer(exampleModuleServer, {
   # Set initial value of a button