Source: lib/dependencies/all.js

  1. /*! @license
  2.  * Shaka Player
  3.  * Copyright 2016 Google LLC
  4.  * SPDX-License-Identifier: Apache-2.0
  5.  */
  7. goog.provide('shaka.dependencies');
  9. /**
  10.  * @export
  11.  */
  12. shaka.dependencies = class {
  13.   /**
  14.    * Registers a new dependency.
  15.    *
  16.    * @param {shaka.dependencies.Allowed} key which is used for retrieving a
  17.    *   dependency
  18.    * @param {?} dep a dependency
  19.    * @export
  20.    */
  21.   static add(key, dep) {
  22.     if (!shaka.dependencies.Allowed[key]) {
  23.       throw new Error(`${key} is not supported`);
  24.     }
  25.     shaka.dependencies.dependencies_.set(key, () => dep);
  26.   }
  28.   /**
  29.    * Check if we have a dependency for the key.
  30.    *
  31.    * @param {shaka.dependencies.Allowed} key key
  32.    * @return {boolean}
  33.    * @export
  34.    */
  35.   static has(key) {
  36.     return shaka.dependencies.dependencies_.has(key);
  37.   }
  39.   /** @return {?muxjs} */
  40.   static muxjs() {
  41.     return /** @type {?muxjs} */ (shaka.dependencies.dependencies_.get(
  42.         shaka.dependencies.Allowed.muxjs)());
  43.   }
  44. };
  46. /**
  47.  * @export
  48.  * @enum {string}
  49.  */
  50. shaka.dependencies.Allowed = {
  51.   muxjs: 'muxjs',
  52. };
  54. /**
  55.  * Contains accessor functions to shared dependencies that could be used by
  56.  * other components.  The default accessors can be overridden.
  57.  *
  58.  * @private {!Map.<shaka.dependencies.Allowed, function():?>}
  59.  */
  60. shaka.dependencies.dependencies_ = new Map([
  61.   [shaka.dependencies.Allowed.muxjs, () => window.muxjs],
  62. ]);