Merge pull request #15972 from atom/decaf-tooltip-manager

 Decaffeinate `src/tooltip-manager.coffee`
This commit is contained in:
Jason Rudolph
2017-10-25 10:09:41 -04:00
committed by GitHub
2 changed files with 199 additions and 176 deletions

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@@ -1,176 +0,0 @@
_ = require 'underscore-plus'
{Disposable, CompositeDisposable} = require 'event-kit'
Tooltip = null
# Essential: Associates tooltips with HTML elements.
#
# You can get the `TooltipManager` via `atom.tooltips`.
#
# ## Examples
#
# The essence of displaying a tooltip
#
# ```coffee
# # display it
# disposable = atom.tooltips.add(div, {title: 'This is a tooltip'})
#
# # remove it
# disposable.dispose()
# ```
#
# In practice there are usually multiple tooltips. So we add them to a
# CompositeDisposable
#
# ```coffee
# {CompositeDisposable} = require 'atom'
# subscriptions = new CompositeDisposable
#
# div1 = document.createElement('div')
# div2 = document.createElement('div')
# subscriptions.add atom.tooltips.add(div1, {title: 'This is a tooltip'})
# subscriptions.add atom.tooltips.add(div2, {title: 'Another tooltip'})
#
# # remove them all
# subscriptions.dispose()
# ```
#
# You can display a key binding in the tooltip as well with the
# `keyBindingCommand` option.
#
# ```coffee
# disposable = atom.tooltips.add @caseOptionButton,
# title: "Match Case"
# keyBindingCommand: 'find-and-replace:toggle-case-option'
# keyBindingTarget: @findEditor.element
# ```
module.exports =
class TooltipManager
defaults:
trigger: 'hover'
container: 'body'
html: true
placement: 'auto top'
viewportPadding: 2
hoverDefaults:
{delay: {show: 1000, hide: 100}}
constructor: ({@keymapManager, @viewRegistry}) ->
@tooltips = new Map()
# Essential: Add a tooltip to the given element.
#
# * `target` An `HTMLElement`
# * `options` An object with one or more of the following options:
# * `title` A {String} or {Function} to use for the text in the tip. If
# a function is passed, `this` will be set to the `target` element. This
# option is mutually exclusive with the `item` option.
# * `html` A {Boolean} affecting the interpretation of the `title` option.
# If `true` (the default), the `title` string will be interpreted as HTML.
# Otherwise it will be interpreted as plain text.
# * `item` A view (object with an `.element` property) or a DOM element
# containing custom content for the tooltip. This option is mutually
# exclusive with the `title` option.
# * `class` A {String} with a class to apply to the tooltip element to
# enable custom styling.
# * `placement` A {String} or {Function} returning a string to indicate
# the position of the tooltip relative to `element`. Can be `'top'`,
# `'bottom'`, `'left'`, `'right'`, or `'auto'`. When `'auto'` is
# specified, it will dynamically reorient the tooltip. For example, if
# placement is `'auto left'`, the tooltip will display to the left when
# possible, otherwise it will display right.
# When a function is used to determine the placement, it is called with
# the tooltip DOM node as its first argument and the triggering element
# DOM node as its second. The `this` context is set to the tooltip
# instance.
# * `trigger` A {String} indicating how the tooltip should be displayed.
# Choose from one of the following options:
# * `'hover'` Show the tooltip when the mouse hovers over the element.
# This is the default.
# * `'click'` Show the tooltip when the element is clicked. The tooltip
# will be hidden after clicking the element again or anywhere else
# outside of the tooltip itself.
# * `'focus'` Show the tooltip when the element is focused.
# * `'manual'` Show the tooltip immediately and only hide it when the
# returned disposable is disposed.
# * `delay` An object specifying the show and hide delay in milliseconds.
# Defaults to `{show: 1000, hide: 100}` if the `trigger` is `hover` and
# otherwise defaults to `0` for both values.
# * `keyBindingCommand` A {String} containing a command name. If you specify
# this option and a key binding exists that matches the command, it will
# be appended to the title or rendered alone if no title is specified.
# * `keyBindingTarget` An `HTMLElement` on which to look up the key binding.
# If this option is not supplied, the first of all matching key bindings
# for the given command will be rendered.
#
# Returns a {Disposable} on which `.dispose()` can be called to remove the
# tooltip.
add: (target, options) ->
if target.jquery
disposable = new CompositeDisposable
disposable.add @add(element, options) for element in target
return disposable
Tooltip ?= require './tooltip'
{keyBindingCommand, keyBindingTarget} = options
if keyBindingCommand?
bindings = @keymapManager.findKeyBindings(command: keyBindingCommand, target: keyBindingTarget)
keystroke = getKeystroke(bindings)
if options.title? and keystroke?
options.title += " " + getKeystroke(bindings)
else if keystroke?
options.title = getKeystroke(bindings)
delete options.selector
options = _.defaults(options, @defaults)
if options.trigger is 'hover'
options = _.defaults(options, @hoverDefaults)
tooltip = new Tooltip(target, options, @viewRegistry)
if not @tooltips.has(target)
@tooltips.set(target, [])
@tooltips.get(target).push(tooltip)
hideTooltip = ->
tooltip.leave(currentTarget: target)
tooltip.hide()
window.addEventListener('resize', hideTooltip)
disposable = new Disposable =>
window.removeEventListener('resize', hideTooltip)
hideTooltip()
tooltip.destroy()
if @tooltips.has(target)
tooltipsForTarget = @tooltips.get(target)
index = tooltipsForTarget.indexOf(tooltip)
if index isnt -1
tooltipsForTarget.splice(index, 1)
if tooltipsForTarget.length is 0
@tooltips.delete(target)
disposable
# Extended: Find the tooltips that have been applied to the given element.
#
# * `target` The `HTMLElement` to find tooltips on.
#
# Returns an {Array} of `Tooltip` objects that match the `target`.
findTooltips: (target) ->
if @tooltips.has(target)
@tooltips.get(target).slice()
else
[]
humanizeKeystrokes = (keystroke) ->
keystrokes = keystroke.split(' ')
keystrokes = (_.humanizeKeystroke(stroke) for stroke in keystrokes)
keystrokes.join(' ')
getKeystroke = (bindings) ->
if bindings?.length
"<span class=\"keystroke\">#{humanizeKeystrokes(bindings[0].keystrokes)}</span>"

199
src/tooltip-manager.js Normal file
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const _ = require('underscore-plus')
const {Disposable, CompositeDisposable} = require('event-kit')
let Tooltip = null
// Essential: Associates tooltips with HTML elements.
//
// You can get the `TooltipManager` via `atom.tooltips`.
//
// ## Examples
//
// The essence of displaying a tooltip
//
// ```javascript
// // display it
// const disposable = atom.tooltips.add(div, {title: 'This is a tooltip'})
//
// // remove it
// disposable.dispose()
// ```
//
// In practice there are usually multiple tooltips. So we add them to a
// CompositeDisposable
//
// ```javascript
// const {CompositeDisposable} = require('atom')
// const subscriptions = new CompositeDisposable()
//
// const div1 = document.createElement('div')
// const div2 = document.createElement('div')
// subscriptions.add(atom.tooltips.add(div1, {title: 'This is a tooltip'}))
// subscriptions.add(atom.tooltips.add(div2, {title: 'Another tooltip'}))
//
// // remove them all
// subscriptions.dispose()
// ```
//
// You can display a key binding in the tooltip as well with the
// `keyBindingCommand` option.
//
// ```javascript
// disposable = atom.tooltips.add(this.caseOptionButton, {
// title: 'Match Case',
// keyBindingCommand: 'find-and-replace:toggle-case-option',
// keyBindingTarget: this.findEditor.element
// })
// ```
module.exports =
class TooltipManager {
constructor ({keymapManager, viewRegistry}) {
this.defaults = {
trigger: 'hover',
container: 'body',
html: true,
placement: 'auto top',
viewportPadding: 2
}
this.hoverDefaults = {
delay: {show: 1000, hide: 100}
}
this.keymapManager = keymapManager
this.viewRegistry = viewRegistry
this.tooltips = new Map()
}
// Essential: Add a tooltip to the given element.
//
// * `target` An `HTMLElement`
// * `options` An object with one or more of the following options:
// * `title` A {String} or {Function} to use for the text in the tip. If
// a function is passed, `this` will be set to the `target` element. This
// option is mutually exclusive with the `item` option.
// * `html` A {Boolean} affecting the interpretation of the `title` option.
// If `true` (the default), the `title` string will be interpreted as HTML.
// Otherwise it will be interpreted as plain text.
// * `item` A view (object with an `.element` property) or a DOM element
// containing custom content for the tooltip. This option is mutually
// exclusive with the `title` option.
// * `class` A {String} with a class to apply to the tooltip element to
// enable custom styling.
// * `placement` A {String} or {Function} returning a string to indicate
// the position of the tooltip relative to `element`. Can be `'top'`,
// `'bottom'`, `'left'`, `'right'`, or `'auto'`. When `'auto'` is
// specified, it will dynamically reorient the tooltip. For example, if
// placement is `'auto left'`, the tooltip will display to the left when
// possible, otherwise it will display right.
// When a function is used to determine the placement, it is called with
// the tooltip DOM node as its first argument and the triggering element
// DOM node as its second. The `this` context is set to the tooltip
// instance.
// * `trigger` A {String} indicating how the tooltip should be displayed.
// Choose from one of the following options:
// * `'hover'` Show the tooltip when the mouse hovers over the element.
// This is the default.
// * `'click'` Show the tooltip when the element is clicked. The tooltip
// will be hidden after clicking the element again or anywhere else
// outside of the tooltip itself.
// * `'focus'` Show the tooltip when the element is focused.
// * `'manual'` Show the tooltip immediately and only hide it when the
// returned disposable is disposed.
// * `delay` An object specifying the show and hide delay in milliseconds.
// Defaults to `{show: 1000, hide: 100}` if the `trigger` is `hover` and
// otherwise defaults to `0` for both values.
// * `keyBindingCommand` A {String} containing a command name. If you specify
// this option and a key binding exists that matches the command, it will
// be appended to the title or rendered alone if no title is specified.
// * `keyBindingTarget` An `HTMLElement` on which to look up the key binding.
// If this option is not supplied, the first of all matching key bindings
// for the given command will be rendered.
//
// Returns a {Disposable} on which `.dispose()` can be called to remove the
// tooltip.
add (target, options) {
if (target.jquery) {
const disposable = new CompositeDisposable()
for (const element of target) { disposable.add(this.add(element, options)) }
return disposable
}
if (Tooltip == null) { Tooltip = require('./tooltip') }
const {keyBindingCommand, keyBindingTarget} = options
if (keyBindingCommand != null) {
const bindings = this.keymapManager.findKeyBindings({command: keyBindingCommand, target: keyBindingTarget})
const keystroke = getKeystroke(bindings)
if ((options.title != null) && (keystroke != null)) {
options.title += ` ${getKeystroke(bindings)}`
} else if (keystroke != null) {
options.title = getKeystroke(bindings)
}
}
delete options.selector
options = _.defaults(options, this.defaults)
if (options.trigger === 'hover') {
options = _.defaults(options, this.hoverDefaults)
}
const tooltip = new Tooltip(target, options, this.viewRegistry)
if (!this.tooltips.has(target)) {
this.tooltips.set(target, [])
}
this.tooltips.get(target).push(tooltip)
const hideTooltip = function () {
tooltip.leave({currentTarget: target})
tooltip.hide()
}
window.addEventListener('resize', hideTooltip)
const disposable = new Disposable(() => {
window.removeEventListener('resize', hideTooltip)
hideTooltip()
tooltip.destroy()
if (this.tooltips.has(target)) {
const tooltipsForTarget = this.tooltips.get(target)
const index = tooltipsForTarget.indexOf(tooltip)
if (index !== -1) {
tooltipsForTarget.splice(index, 1)
}
if (tooltipsForTarget.length === 0) {
this.tooltips.delete(target)
}
}
})
return disposable
}
// Extended: Find the tooltips that have been applied to the given element.
//
// * `target` The `HTMLElement` to find tooltips on.
//
// Returns an {Array} of `Tooltip` objects that match the `target`.
findTooltips (target) {
if (this.tooltips.has(target)) {
return this.tooltips.get(target).slice()
} else {
return []
}
}
}
function humanizeKeystrokes (keystroke) {
let keystrokes = keystroke.split(' ')
keystrokes = (keystrokes.map((stroke) => _.humanizeKeystroke(stroke)))
return keystrokes.join(' ')
}
function getKeystroke (bindings) {
if (bindings && bindings.length) {
return `<span class="keystroke">${humanizeKeystrokes(bindings[0].keystrokes)}</span>`
}
}