Source: ui/skip_next_button.js

  1. /*! @license
  2.  * Shaka Player
  3.  * Copyright 2016 Google LLC
  4.  * SPDX-License-Identifier: Apache-2.0
  5.  */
  8. goog.provide('shaka.ui.SkipNextButton');
  10. goog.require('shaka.ui.Controls');
  11. goog.require('shaka.ui.Element');
  12. goog.require('shaka.ui.Enums');
  13. goog.require('shaka.ui.Locales');
  14. goog.require('shaka.ui.Localization');
  15. goog.require('shaka.ui.Utils');
  16. goog.require('shaka.util.Dom');
  19. /**
  20.  * @extends {shaka.ui.Element}
  21.  * @final
  22.  * @export
  23.  */
  24. shaka.ui.SkipNextButton = class extends shaka.ui.Element {
  25.   /**
  26.    * @param {!HTMLElement} parent
  27.    * @param {!shaka.ui.Controls} controls
  28.    */
  29.   constructor(parent, controls) {
  30.     super(parent, controls);
  32.     this.queueManager_ = this.player.getQueueManager();
  34.     if (!this.queueManager_) {
  35.       return;
  36.     }
  38.     /** @private {!HTMLButtonElement} */
  39.     this.button_ = shaka.util.Dom.createButton();
  40.     this.button_.classList.add('shaka-skip-next-button');
  41.     this.button_.classList.add('material-icons-round');
  42.     this.button_.classList.add('shaka-tooltip');
  43.     this.button_.textContent = shaka.ui.Enums.MaterialDesignIcons.SKIP_NEXT;
  44.     this.parent.appendChild(this.button_);
  46.     this.updateAriaLabel_();
  47.     this.checkAvailability_();
  49.     this.eventManager.listen(
  50.         this.localization, shaka.ui.Localization.LOCALE_UPDATED, () => {
  51.           this.updateAriaLabel_();
  52.         });
  54.     this.eventManager.listen(
  55.         this.localization, shaka.ui.Localization.LOCALE_CHANGED, () => {
  56.           this.updateAriaLabel_();
  57.         });
  59.     this.eventManager.listen(this.button_, 'click', () => {
  60.       if (!this.controls.isOpaque()) {
  61.         return;
  62.       }
  63.       this.queueManager_.playItem(this.queueManager_.getCurrentItemIndex() + 1);
  64.     });
  66.     this.eventManager.listen(this.queueManager_, 'currentitemchanged', () => {
  67.       this.checkAvailability_();
  68.     });
  70.     this.eventManager.listen(this.queueManager_, 'itemsinserted', () => {
  71.       this.checkAvailability_();
  72.     });
  74.     this.eventManager.listen(this.queueManager_, 'itemsremoved', () => {
  75.       this.checkAvailability_();
  76.     });
  78.     this.eventManager.listen(this.player, 'loading', () => {
  79.       this.checkAvailability_();
  80.     });
  81.   }
  83.   /**
  84.    * @private
  85.    */
  86.   updateAriaLabel_() {
  87.     this.button_.ariaLabel =
  88.         this.localization.resolve(shaka.ui.Locales.Ids.SKIP_NEXT);
  89.   }
  91.   /** @private */
  92.   checkAvailability_() {
  93.     const itemsLength = this.queueManager_.getItems().length;
  94.     const available = itemsLength > 1 &&
  95.       (this.queueManager_.getCurrentItemIndex() + 1) < itemsLength;
  96.     shaka.ui.Utils.setDisplay(this.button_, available);
  97.   }
  98. };
  101. /**
  102.  * @implements {shaka.extern.IUIElement.Factory}
  103.  * @final
  104.  */
  105. shaka.ui.SkipNextButton.Factory = class {
  106.   /** @override */
  107.   create(rootElement, controls) {
  108.     return new shaka.ui.SkipNextButton(rootElement, controls);
  109.   }
  110. };
  112. shaka.ui.Controls.registerElement(
  113.     'skip_next', new shaka.ui.SkipNextButton.Factory());