mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-17 16:26:39 +03:00
Joey Parrish
64896d70b0
This reflects changes in Google's policy on JavaScript license headers, which should be smaller to avoid increasing the size of the binary unnecessarily. This also updates the company name from "Google, Inc" to "Google LLC". Change-Id: I3f8b9ed3700b6351f43173d50c94d35c333e82b4
91 lines
2.2 KiB
JavaScript
91 lines
2.2 KiB
JavaScript
/** @license
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* Copyright 2016 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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goog.provide('shaka.ui.FastForwardButton');
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goog.require('shaka.ui.Element');
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goog.require('shaka.ui.Locales');
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goog.require('shaka.ui.Localization');
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goog.require('shaka.util.Dom');
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/**
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* @extends {shaka.ui.Element}
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* @final
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* @export
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*/
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shaka.ui.FastForwardButton = class extends shaka.ui.Element {
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/**
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* @param {!HTMLElement} parent
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* @param {!shaka.ui.Controls} controls
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*/
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constructor(parent, controls) {
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super(parent, controls);
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this.button_ = shaka.util.Dom.createHTMLElement('button');
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this.button_.classList.add('material-icons');
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this.button_.classList.add('shaka-fast-forward-button');
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this.button_.textContent =
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shaka.ui.Enums.MaterialDesignIcons.FAST_FORWARD;
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this.parent.appendChild(this.button_);
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this.updateAriaLabel_();
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this.eventManager.listen(
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this.localization, shaka.ui.Localization.LOCALE_UPDATED, () => {
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this.updateAriaLabel_();
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});
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this.eventManager.listen(
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this.localization, shaka.ui.Localization.LOCALE_CHANGED, () => {
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this.updateAriaLabel_();
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});
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this.eventManager.listen(this.button_, 'click', () => {
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this.fastForward_();
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});
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}
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/**
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* @private
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*/
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updateAriaLabel_() {
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this.button_.setAttribute(shaka.ui.Constants.ARIA_LABEL,
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this.localization.resolve(shaka.ui.Locales.Ids.FAST_FORWARD));
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}
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/**
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* Cycles trick play rate between 1, 2, 4, and 8.
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* @private
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*/
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fastForward_() {
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if (!this.video.duration) {
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return;
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}
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const trickPlayRate = this.player.getPlaybackRate();
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// Every time the button is clicked, the rate is multiplied by 2,
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// unless the rate is at max (8), in which case it is dropped back to 1.
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const newRate = (trickPlayRate < 0 || trickPlayRate > 4) ?
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1 : trickPlayRate * 2;
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this.player.trickPlay(newRate);
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}
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};
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/**
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* @implements {shaka.extern.IUIElement.Factory}
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* @final
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*/
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shaka.ui.FastForwardButton.Factory = class {
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/** @override */
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create(rootElement, controls) {
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return new shaka.ui.FastForwardButton(rootElement, controls);
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}
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};
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shaka.ui.Controls.registerElement(
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'fast_forward', new shaka.ui.FastForwardButton.Factory());
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