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Added support for playbackRate switching. closes #1132
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| /** | ||
| * The component for controlling the playback rate | ||
| * | ||
| * @param {vjs.Player|Object} player | ||
| * @param {Object=} options | ||
| * @constructor | ||
| */ | ||
| vjs.PlaybackRateMenuButton = vjs.MenuButton.extend({ | ||
| /** @constructor */ | ||
| init: function(player, options){ | ||
| vjs.MenuButton.call(this, player, options); | ||
|
|
||
| this.updateVisibility(); | ||
| this.updateLabel(); | ||
|
|
||
| player.on('loadstart', vjs.bind(this, this.updateVisibility)); | ||
| player.on('ratechange', vjs.bind(this, this.updateLabel)); | ||
| } | ||
| }); | ||
|
|
||
| vjs.PlaybackRateMenuButton.prototype.createEl = function(){ | ||
| var el = vjs.Component.prototype.createEl.call(this, 'div', { | ||
| className: 'vjs-playback-rate vjs-menu-button vjs-control', | ||
| innerHTML: '<div class="vjs-control-content"><span class="vjs-control-text">Playback Rate</span></div>' | ||
| }); | ||
|
|
||
| this.labelEl_ = vjs.createEl('div', { | ||
| className: 'vjs-playback-rate-value', | ||
| innerHTML: 1.0 | ||
| }); | ||
|
|
||
| el.appendChild(this.labelEl_); | ||
|
|
||
| return el; | ||
| }; | ||
|
|
||
| // Menu creation | ||
| vjs.PlaybackRateMenuButton.prototype.createMenu = function(){ | ||
| var menu = new vjs.Menu(this.player()); | ||
| var rates = this.player().options().playbackRates; | ||
|
|
||
| if (rates) { | ||
| for (var i = rates.length - 1; i >= 0; i--) { | ||
| menu.addChild( | ||
| new vjs.PlaybackRateMenuItem(this.player(), {rate: rates[i] + 'x'}) | ||
| ); | ||
| }; | ||
| } | ||
|
|
||
| return menu; | ||
| }; | ||
|
|
||
| vjs.PlaybackRateMenuButton.prototype.updateARIAAttributes = function(){ | ||
| // Current playback rate | ||
| this.el().setAttribute('aria-valuenow', this.player().playbackRate()); | ||
| }; | ||
|
|
||
| vjs.PlaybackRateMenuButton.prototype.onClick = function(){ | ||
| // select next rate option | ||
| var currentRate = this.player().playbackRate(); | ||
| var rates = this.player().options().playbackRates; | ||
| // this will select first one if the last one currently selected | ||
| var newRate = rates[0]; | ||
| for (var i = 0; i <rates.length ; i++) { | ||
| if (rates[i] > currentRate) { | ||
| newRate = rates[i]; | ||
| break; | ||
| } | ||
| }; | ||
| this.player().playbackRate(newRate); | ||
| }; | ||
|
|
||
| vjs.PlaybackRateMenuButton.prototype.playbackRateSupported = function(){ | ||
| return this.player().tech | ||
| && this.player().tech.features['playbackRate'] | ||
| && this.player().options().playbackRates | ||
| && this.player().options().playbackRates.length > 0 | ||
| ; | ||
| }; | ||
|
|
||
| /** | ||
| * Hide playback rate controls when they're no playback rate options to select | ||
| */ | ||
| vjs.PlaybackRateMenuButton.prototype.updateVisibility = function(){ | ||
| if (this.playbackRateSupported()) { | ||
| this.removeClass('vjs-hidden'); | ||
| } else { | ||
| this.addClass('vjs-hidden'); | ||
| } | ||
| }; | ||
|
|
||
| /** | ||
| * Update button label when rate changed | ||
| */ | ||
| vjs.PlaybackRateMenuButton.prototype.updateLabel = function(){ | ||
| if (this.playbackRateSupported()) { | ||
| this.labelEl_.innerHTML = this.player().playbackRate() + 'x'; | ||
| } | ||
| }; | ||
|
|
||
| /** | ||
| * The specific menu item type for selecting a playback rate | ||
| * | ||
| * @constructor | ||
| */ | ||
| vjs.PlaybackRateMenuItem = vjs.MenuItem.extend({ | ||
| contentElType: 'button', | ||
| /** @constructor */ | ||
| init: function(player, options){ | ||
| var label = this.label = options['rate']; | ||
| var rate = this.rate = parseFloat(label, 10); | ||
|
|
||
| // Modify options for parent MenuItem class's init. | ||
| options['label'] = label; | ||
| options['selected'] = rate === 1; | ||
| vjs.MenuItem.call(this, player, options); | ||
|
|
||
| this.player().on('ratechange', vjs.bind(this, this.update)); | ||
| } | ||
| }); | ||
|
|
||
| vjs.PlaybackRateMenuItem.prototype.onClick = function(){ | ||
| vjs.MenuItem.prototype.onClick.call(this); | ||
| this.player().playbackRate(this.rate); | ||
| }; | ||
|
|
||
| vjs.PlaybackRateMenuItem.prototype.update = function(){ | ||
| this.selected(this.player().playbackRate() == this.rate); | ||
| }; |
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