shaka-player/lib/polyfill/indexed_db.js

DASH/EME video player library

/**
 * @license
 * Copyright 2016 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

goog.provide('shaka.polyfill.IndexedDB');

goog.require('goog.asserts');
goog.require('shaka.log');
goog.require('shaka.polyfill.register');


/**
 * @namespace shaka.polyfill.IndexedDB
 *
 * @summary A polyfill to patch indexed db bugs.
 */


/**
 * Install the polyfill if needed.
 */
shaka.polyfill.IndexedDB.install = function() {
  shaka.log.debug('IndexedDB.install');

  var agent = navigator.userAgent;
  if (agent && agent.indexOf('CrKey') >= 0) {
    shaka.log.debug('Removing IndexedDB from ChromeCast');
    delete window.indexedDB;
    goog.asserts.assert(
        !window.indexedDB, 'Failed to override window.indexedDB');
  }
};

shaka.polyfill.register(shaka.polyfill.IndexedDB.install);