1/*
 2 *
 3 * Licensed to the Apache Software Foundation (ASF) under one
 4 * or more contributor license agreements.  See the NOTICE file
 5 * distributed with this work for additional information
 6 * regarding copyright ownership.  The ASF licenses this file
 7 * to you under the Apache License, Version 2.0 (the
 8 * "License"); you may not use this file except in compliance
 9 * with the License.  You may obtain a copy of the License at
10 *
11 *   http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied.  See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20*/
21
22/*
23 * requestAnimationFrame
24 * 
25 * This is used throughout the BB10 File implementation to wrap
26 * native webkit calls. There is a bug in the webkit implementation
27 * which causes callbacks to never return when multiple file system
28 * APIs are called in sequence. This should also make the UI more
29 * responsive during file operations.
30 * 
31 * Supported on BB10 OS > 10.1
32 */
33
34var requestAnimationFrame = window.requestAnimationFrame;
35if (typeof(requestAnimationFrame) !== 'function') {
36    requestAnimationFrame = function (cb) { cb(); };
37}
38module.exports = requestAnimationFrame;