mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-26 17:46:26 +03:00
Sandra Lokshina
121b615c3e
What's already done: - UIElement and IUIElement interface - All elements register themselves with controls - Each element is responsible for its' behavior - A bit of clean up with constants/enums moving to their own files What is not done yet: - Overflow menu is a dumping ground now. Its' elements will move to the UIElement model eventually, too. - Build files are hacked a bit and will need more attention. - No clean up has been done except for the constants/enums. Change-Id: I9917aa705e85158a2f26830bd988552fe177e53b
102 lines
2.7 KiB
JavaScript
102 lines
2.7 KiB
JavaScript
/**
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* @license
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* Copyright 2016 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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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.ui.Utils');
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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.ui.Utils.createHTMLElement('button');
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this.button_.classList.add('material-icons');
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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.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(
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shaka.ui.Locales.Ids.ARIA_LABEL_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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