mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-14 15:56:38 +03:00
Álvaro Velad Galván
125 lines
3.3 KiB
JavaScript
125 lines
3.3 KiB
JavaScript
/*! @license
|
|
* Shaka Player
|
|
* Copyright 2016 Google LLC
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
|
|
goog.provide('shaka.ui.RewindButton');
|
|
|
|
goog.require('shaka.ui.Controls');
|
|
goog.require('shaka.ui.Element');
|
|
goog.require('shaka.ui.Enums');
|
|
goog.require('shaka.ui.Icon');
|
|
goog.require('shaka.ui.Locales');
|
|
goog.require('shaka.ui.Localization');
|
|
goog.require('shaka.util.Dom');
|
|
|
|
|
|
/**
|
|
* @extends {shaka.ui.Element}
|
|
* @final
|
|
* @export
|
|
*/
|
|
shaka.ui.RewindButton = class extends shaka.ui.Element {
|
|
/**
|
|
* @param {!HTMLElement} parent
|
|
* @param {!shaka.ui.Controls} controls
|
|
*/
|
|
constructor(parent, controls) {
|
|
super(parent, controls);
|
|
|
|
/** @private {!HTMLButtonElement} */
|
|
this.button_ = shaka.util.Dom.createButton();
|
|
this.button_.classList.add('shaka-rewind-button');
|
|
this.button_.classList.add('shaka-tooltip-status');
|
|
this.button_.classList.add('shaka-no-propagation');
|
|
this.button_.setAttribute('shaka-status',
|
|
this.localization.resolve(shaka.ui.Locales.Ids.OFF));
|
|
|
|
new shaka.ui.Icon(this.button_).use(
|
|
shaka.ui.Enums.MaterialDesignSVGIcons['REWIND']);
|
|
|
|
this.parent.appendChild(this.button_);
|
|
this.updateAriaLabel_();
|
|
|
|
/** @private {!Array<number>} */
|
|
this.rewindRates_ = this.controls.getConfig().rewindRates;
|
|
|
|
this.eventManager.listenMulti(
|
|
this.localization,
|
|
[
|
|
shaka.ui.Localization.LOCALE_UPDATED,
|
|
shaka.ui.Localization.LOCALE_CHANGED,
|
|
], () => {
|
|
this.updateAriaLabel_();
|
|
});
|
|
|
|
this.eventManager.listen(this.button_, 'click', () => {
|
|
if (!this.controls.isOpaque()) {
|
|
return;
|
|
}
|
|
this.rewind_();
|
|
});
|
|
|
|
this.eventManager.listen(this.player, 'ratechange', () => {
|
|
this.button_.setAttribute(
|
|
'shaka-status', this.player.getPlaybackRate() + 'x');
|
|
});
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
updateAriaLabel_() {
|
|
this.button_.ariaLabel =
|
|
this.localization.resolve(shaka.ui.Locales.Ids.REWIND);
|
|
}
|
|
|
|
/**
|
|
* Cycles trick play rate between the selected rewind rates.
|
|
* @private
|
|
*/
|
|
rewind_() {
|
|
if (!this.video.duration) {
|
|
return;
|
|
}
|
|
|
|
const trickPlayRate = this.player.getPlaybackRate();
|
|
const newRateIndex = this.rewindRates_.indexOf(trickPlayRate) + 1;
|
|
|
|
// When the button is clicked, the next rate in this.rewindRates_ is
|
|
// selected. If no more rates are available, the first one is set.
|
|
const newRate = (newRateIndex != this.rewindRates_.length) ?
|
|
this.rewindRates_[newRateIndex] : this.rewindRates_[0];
|
|
|
|
if (this.video.paused) {
|
|
// Our fast forward is implemented with playbackRate and needs the video
|
|
// to be playing (to not be paused) to take immediate effect.
|
|
// If the video is paused, "unpause" it.
|
|
this.video.play();
|
|
}
|
|
this.player.trickPlay(newRate);
|
|
|
|
this.button_.setAttribute('shaka-status', newRate + 'x');
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* @implements {shaka.extern.IUIElement.Factory}
|
|
* @final
|
|
*/
|
|
shaka.ui.RewindButton.Factory = class {
|
|
/** @override */
|
|
create(rootElement, controls) {
|
|
return new shaka.ui.RewindButton(rootElement, controls);
|
|
}
|
|
};
|
|
|
|
shaka.ui.Controls.registerElement(
|
|
'rewind', new shaka.ui.RewindButton.Factory());
|
|
|
|
shaka.ui.Controls.registerBigElement(
|
|
'rewind', new shaka.ui.RewindButton.Factory());
|