341 lines
10 KiB
JavaScript
341 lines
10 KiB
JavaScript
const { EventEmitter } = require('events')
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let nextItemID = 1
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class TouchBar extends EventEmitter {
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// Bind a touch bar to a window
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static _setOnWindow (touchBar, window) {
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if (window._touchBar != null) {
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window._touchBar._removeFromWindow(window)
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}
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if (touchBar == null) {
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window._setTouchBarItems([])
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return
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}
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if (Array.isArray(touchBar)) {
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touchBar = new TouchBar(touchBar)
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}
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touchBar._addToWindow(window)
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}
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constructor (options) {
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super()
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if (options == null) {
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throw new Error('Must specify options object as first argument')
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}
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let { items, escapeItem } = options
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// FIXME Support array as first argument, remove in 2.0
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if (Array.isArray(options)) {
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items = options
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escapeItem = null
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}
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if (!Array.isArray(items)) {
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items = []
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}
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this.changeListener = (item) => {
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this.emit('change', item.id, item.type)
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}
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this.windowListeners = {}
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this.items = {}
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this.ordereredItems = []
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this.escapeItem = escapeItem
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const registerItem = (item) => {
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this.items[item.id] = item
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item.on('change', this.changeListener)
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if (item.child instanceof TouchBar) {
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item.child.ordereredItems.forEach(registerItem)
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}
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}
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items.forEach((item) => {
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if (!(item instanceof TouchBarItem)) {
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throw new Error('Each item must be an instance of TouchBarItem')
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}
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this.ordereredItems.push(item)
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registerItem(item)
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})
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}
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set escapeItem (item) {
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if (item != null && !(item instanceof TouchBarItem)) {
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throw new Error('Escape item must be an instance of TouchBarItem')
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}
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if (this.escapeItem != null) {
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this.escapeItem.removeListener('change', this.changeListener)
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}
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this._escapeItem = item
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if (this.escapeItem != null) {
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this.escapeItem.on('change', this.changeListener)
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}
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this.emit('escape-item-change', item)
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}
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get escapeItem () {
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return this._escapeItem
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}
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_addToWindow (window) {
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const { id } = window
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// Already added to window
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if (this.windowListeners.hasOwnProperty(id)) return
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window._touchBar = this
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const changeListener = (itemID) => {
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window._refreshTouchBarItem(itemID)
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}
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this.on('change', changeListener)
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const escapeItemListener = (item) => {
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window._setEscapeTouchBarItem(item != null ? item : {})
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}
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this.on('escape-item-change', escapeItemListener)
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const interactionListener = (event, itemID, details) => {
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let item = this.items[itemID]
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if (item == null && this.escapeItem != null && this.escapeItem.id === itemID) {
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item = this.escapeItem
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}
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if (item != null && item.onInteraction != null) {
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item.onInteraction(details)
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}
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}
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window.on('-touch-bar-interaction', interactionListener)
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const removeListeners = () => {
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this.removeListener('change', changeListener)
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this.removeListener('escape-item-change', escapeItemListener)
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window.removeListener('-touch-bar-interaction', interactionListener)
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window.removeListener('closed', removeListeners)
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window._touchBar = null
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delete this.windowListeners[id]
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const unregisterItems = (items) => {
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for (const item of items) {
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item.removeListener('change', this.changeListener)
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if (item.child instanceof TouchBar) {
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unregisterItems(item.child.ordereredItems)
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}
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}
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}
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unregisterItems(this.ordereredItems)
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if (this.escapeItem) {
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this.escapeItem.removeListener('change', this.changeListener)
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}
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}
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window.once('closed', removeListeners)
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this.windowListeners[id] = removeListeners
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window._setTouchBarItems(this.ordereredItems)
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escapeItemListener(this.escapeItem)
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}
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_removeFromWindow (window) {
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const removeListeners = this.windowListeners[window.id]
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if (removeListeners != null) removeListeners()
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}
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}
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class TouchBarItem extends EventEmitter {
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constructor () {
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super()
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this._addImmutableProperty('id', `${nextItemID++}`)
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this._parents = []
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}
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_addImmutableProperty (name, value) {
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Object.defineProperty(this, name, {
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get: function () {
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return value
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},
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set: function () {
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throw new Error(`Cannot override property ${name}`)
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},
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enumerable: true,
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configurable: false
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})
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}
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_addLiveProperty (name, initialValue) {
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const privateName = `_${name}`
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this[privateName] = initialValue
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Object.defineProperty(this, name, {
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get: function () {
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return this[privateName]
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},
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set: function (value) {
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this[privateName] = value
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this.emit('change', this)
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},
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enumerable: true
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})
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}
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_addParent (item) {
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const existing = this._parents.some(test => test.id === item.id)
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if (!existing) {
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this._parents.push({
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id: item.id,
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type: item.type
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})
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}
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}
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}
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TouchBar.TouchBarButton = class TouchBarButton extends TouchBarItem {
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constructor (config) {
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super()
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if (config == null) config = {}
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this._addImmutableProperty('type', 'button')
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const { click, icon, iconPosition, label, backgroundColor } = config
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this._addLiveProperty('label', label)
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this._addLiveProperty('backgroundColor', backgroundColor)
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this._addLiveProperty('icon', icon)
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this._addLiveProperty('iconPosition', iconPosition)
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if (typeof click === 'function') {
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this._addImmutableProperty('onInteraction', () => {
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config.click()
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})
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}
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}
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}
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TouchBar.TouchBarColorPicker = class TouchBarColorPicker extends TouchBarItem {
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constructor (config) {
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super()
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if (config == null) config = {}
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this._addImmutableProperty('type', 'colorpicker')
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const { availableColors, change, selectedColor } = config
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this._addLiveProperty('availableColors', availableColors)
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this._addLiveProperty('selectedColor', selectedColor)
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if (typeof change === 'function') {
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this._addImmutableProperty('onInteraction', (details) => {
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this._selectedColor = details.color
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change(details.color)
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})
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}
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}
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}
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TouchBar.TouchBarGroup = class TouchBarGroup extends TouchBarItem {
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constructor (config) {
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super()
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if (config == null) config = {}
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this._addImmutableProperty('type', 'group')
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const defaultChild = (config.items instanceof TouchBar) ? config.items : new TouchBar(config.items)
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this._addLiveProperty('child', defaultChild)
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this.child.ordereredItems.forEach((item) => item._addParent(this))
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}
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}
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TouchBar.TouchBarLabel = class TouchBarLabel extends TouchBarItem {
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constructor (config) {
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super()
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if (config == null) config = {}
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this._addImmutableProperty('type', 'label')
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this._addLiveProperty('label', config.label)
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this._addLiveProperty('textColor', config.textColor)
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}
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}
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TouchBar.TouchBarPopover = class TouchBarPopover extends TouchBarItem {
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constructor (config) {
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super()
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if (config == null) config = {}
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this._addImmutableProperty('type', 'popover')
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this._addLiveProperty('label', config.label)
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this._addLiveProperty('icon', config.icon)
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this._addLiveProperty('showCloseButton', config.showCloseButton)
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const defaultChild = (config.items instanceof TouchBar) ? config.items : new TouchBar(config.items)
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this._addLiveProperty('child', defaultChild)
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this.child.ordereredItems.forEach((item) => item._addParent(this))
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}
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}
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TouchBar.TouchBarSlider = class TouchBarSlider extends TouchBarItem {
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constructor (config) {
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super()
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if (config == null) config = {}
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this._addImmutableProperty('type', 'slider')
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const { change, label, minValue, maxValue, value } = config
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this._addLiveProperty('label', label)
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this._addLiveProperty('minValue', minValue)
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this._addLiveProperty('maxValue', maxValue)
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this._addLiveProperty('value', value)
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if (typeof change === 'function') {
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this._addImmutableProperty('onInteraction', (details) => {
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this._value = details.value
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change(details.value)
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})
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}
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}
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}
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TouchBar.TouchBarSpacer = class TouchBarSpacer extends TouchBarItem {
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constructor (config) {
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super()
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if (config == null) config = {}
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this._addImmutableProperty('type', 'spacer')
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this._addImmutableProperty('size', config.size)
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}
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}
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TouchBar.TouchBarSegmentedControl = class TouchBarSegmentedControl extends TouchBarItem {
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constructor (config) {
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super()
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if (config == null) config = {}
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const { segmentStyle, segments, selectedIndex, change, mode } = config
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this._addImmutableProperty('type', 'segmented_control')
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this._addLiveProperty('segmentStyle', segmentStyle)
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this._addLiveProperty('segments', segments || [])
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this._addLiveProperty('selectedIndex', selectedIndex)
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this._addLiveProperty('mode', mode)
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if (typeof change === 'function') {
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this._addImmutableProperty('onInteraction', (details) => {
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this._selectedIndex = details.selectedIndex
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change(details.selectedIndex, details.isSelected)
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})
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}
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}
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}
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TouchBar.TouchBarScrubber = class TouchBarScrubber extends TouchBarItem {
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constructor (config) {
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super()
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if (config == null) config = {}
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const { items, selectedStyle, overlayStyle, showArrowButtons, continuous, mode } = config
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let { select, highlight } = config
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this._addImmutableProperty('type', 'scrubber')
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this._addLiveProperty('items', items)
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this._addLiveProperty('selectedStyle', selectedStyle || null)
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this._addLiveProperty('overlayStyle', overlayStyle || null)
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this._addLiveProperty('showArrowButtons', showArrowButtons || false)
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this._addLiveProperty('mode', mode || 'free')
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this._addLiveProperty('continuous', typeof continuous === 'undefined' ? true : continuous)
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if (typeof select === 'function' || typeof highlight === 'function') {
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if (select == null) select = () => {}
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if (highlight == null) highlight = () => {}
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this._addImmutableProperty('onInteraction', (details) => {
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if (details.type === 'select' && typeof select === 'function') {
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select(details.selectedIndex)
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} else if (details.type === 'highlight' && typeof highlight === 'function') {
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highlight(details.highlightedIndex)
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}
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})
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}
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}
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}
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module.exports = TouchBar
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