Source: ui/mute_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.MuteButton');
  10. goog.require('shaka.ads.AdManager');
  11. goog.require('shaka.ui.Controls');
  12. goog.require('shaka.ui.Element');
  13. goog.require('shaka.ui.Enums');
  14. goog.require('shaka.ui.Locales');
  15. goog.require('shaka.ui.Localization');
  16. goog.require('shaka.util.Dom');
  19. /**
  20.  * @extends {shaka.ui.Element}
  21.  * @final
  22.  * @export
  23.  */
  24. shaka.ui.MuteButton = 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.     /** @private {!HTMLButtonElement} */
  33.     this.button_ = shaka.util.Dom.createButton();
  34.     this.button_.classList.add('shaka-mute-button');
  35.     this.button_.classList.add('material-icons-round');
  36.     this.parent.appendChild(this.button_);
  37.     this.updateAriaLabel_();
  38.     this.updateIcon_();
  40.     this.eventManager.listen(
  41.         this.localization, shaka.ui.Localization.LOCALE_UPDATED, () => {
  42.           this.updateAriaLabel_();
  43.         });
  45.     this.eventManager.listen(
  46.         this.localization, shaka.ui.Localization.LOCALE_CHANGED, () => {
  47.           this.updateAriaLabel_();
  48.         });
  50.     this.eventManager.listen(this.button_, 'click', () => {
  51.       if (this.ad) {
  52.         this.ad.setMuted(!this.ad.isMuted());
  53.       } else {
  54.         this.video.muted = !this.video.muted;
  55.       }
  56.     });
  58.     this.eventManager.listen(this.video, 'volumechange', () => {
  59.       this.updateAriaLabel_();
  60.       this.updateIcon_();
  61.     });
  63.     this.eventManager.listen(this.adManager,
  64.         shaka.ads.AdManager.AD_VOLUME_CHANGED, () => {
  65.           this.updateAriaLabel_();
  66.           this.updateIcon_();
  67.         });
  69.     this.eventManager.listen(this.adManager,
  70.         shaka.ads.AdManager.AD_MUTED, () => {
  71.           this.updateAriaLabel_();
  72.           this.updateIcon_();
  73.         });
  75.     this.eventManager.listen(this.adManager,
  76.         shaka.ads.AdManager.AD_STOPPED, () => {
  77.           // The base class also listens for this event and sets this.ad
  78.           // to null. This is a safeguard in case of a race condition as
  79.           // the label and icon code depends on this.ad being correctly
  80.           // updated at the time it runs.
  81.           this.ad = null;
  82.           this.updateAriaLabel_();
  83.           this.updateIcon_();
  84.         });
  85.   }
  87.   /**
  88.    * @private
  89.    */
  90.   updateAriaLabel_() {
  91.     const LocIds = shaka.ui.Locales.Ids;
  92.     let label;
  93.     if (this.ad) {
  94.       label = this.ad.isMuted() ? LocIds.UNMUTE : LocIds.MUTE;
  95.     } else {
  96.       label = this.video.muted ? LocIds.UNMUTE : LocIds.MUTE;
  97.     }
  99.     this.button_.ariaLabel = this.localization.resolve(label);
  100.   }
  102.   /**
  103.    * @private
  104.    */
  105.   updateIcon_() {
  106.     const Icons = shaka.ui.Enums.MaterialDesignIcons;
  107.     let icon;
  108.     if (this.ad) {
  109.       icon = this.ad.isMuted() ? Icons.UNMUTE : Icons.MUTE;
  110.     } else {
  111.       icon = this.video.muted ? Icons.UNMUTE : Icons.MUTE;
  112.     }
  113.     this.button_.textContent = icon;
  114.   }
  115. };
  118. /**
  119.  * @implements {shaka.extern.IUIElement.Factory}
  120.  * @final
  121.  */
  122. shaka.ui.MuteButton.Factory = class {
  123.   /** @override */
  124.   create(rootElement, controls) {
  125.     return new shaka.ui.MuteButton(rootElement, controls);
  126.   }
  127. };
  129. shaka.ui.Controls.registerElement('mute', new shaka.ui.MuteButton.Factory());