/**
* @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.offline.StorageEngineFactory');
goog.require('shaka.offline.DBEngine');
goog.require('shaka.offline.IStorageEngine');
goog.require('shaka.util.Error');
/**
* @namespace shaka.offline.StorageEngineFactory
*/
/**
* Determines if this platform supports any form of storage engine.
* @return {boolean}
*/
shaka.offline.StorageEngineFactory.isSupported = function() {
return shaka.offline.DBEngine.isSupported();
};
/**
* Create a new instance of the supported storage engine. The created instance
* will be initialized.
* @return {!Promise<!shaka.offline.IStorageEngine>}
*/
shaka.offline.StorageEngineFactory.createStorageEngine = function() {
// Use our method to check in case it was replaced.
var supportsStorage = shaka.offline.StorageEngineFactory.isSupported();
if (!supportsStorage) {
return Promise.reject(new shaka.util.Error(
shaka.util.Error.Severity.CRITICAL,
shaka.util.Error.Category.STORAGE,
shaka.util.Error.Code.STORAGE_NOT_SUPPORTED));
}
/** @type {!shaka.offline.DBEngine} */
var engine = new shaka.offline.DBEngine('shaka_offline_db');
return engine.init().then(function() { return engine; });
};