Source: lib/polyfill/all.js

  1. /**
  2.  * @license
  3.  * Copyright 2016 Google Inc.
  4.  *
  5.  * Licensed under the Apache License, Version 2.0 (the "License");
  6.  * you may not use this file except in compliance with the License.
  7.  * You may obtain a copy of the License at
  8.  *
  9.  *     http://www.apache.org/licenses/LICENSE-2.0
  10.  *
  11.  * Unless required by applicable law or agreed to in writing, software
  12.  * distributed under the License is distributed on an "AS IS" BASIS,
  13.  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14.  * See the License for the specific language governing permissions and
  15.  * limitations under the License.
  16.  */
  18. goog.provide('shaka.polyfill.installAll');
  19. goog.provide('shaka.polyfill.register');
  22. /**
  23.  * @namespace shaka.polyfill
  24.  * @summary A one-stop installer for all polyfills.
  25.  * @see http://enwp.org/polyfill
  26.  * @exportDoc
  27.  */
  30. /**
  31.  * Install all polyfills.
  32.  * @export
  33.  */
  34. shaka.polyfill.installAll = function() {
  35.   for (let i = 0; i < shaka.polyfill.polyfills_.length; ++i) {
  36.     shaka.polyfill.polyfills_[i].callback();
  37.   }
  38. };
  41. /**
  42.  * Contains the polyfills that will be installed.
  43.  * @private {!Array.<{priority: number, callback: function()}>}
  44.  */
  45. shaka.polyfill.polyfills_ = [];
  48. /**
  49.  * Registers a new polyfill to be installed.
  50.  *
  51.  * @param {function()} polyfill
  52.  * @param {number=} priority An optional number priority.  Higher priorities
  53.  *   will be executed before lower priority ones.  Default is 0.
  54.  * @export
  55.  */
  56. shaka.polyfill.register = function(polyfill, priority) {
  57.   priority = priority || 0;
  58.   const item = {priority: priority, callback: polyfill};
  59.   for (let i = 0; i < shaka.polyfill.polyfills_.length; i++) {
  60.     if (shaka.polyfill.polyfills_[i].priority < priority) {
  61.       shaka.polyfill.polyfills_.splice(i, 0, item);
  62.       return;
  63.     }
  64.   }
  65.   shaka.polyfill.polyfills_.push(item);
  66. };