1 /*
2  * Copyright (C) 2012 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.gallery3d.data;
18 
19 import java.util.concurrent.atomic.AtomicBoolean;
20 
21 // This is a simple MediaSet which contains only one MediaItem -- a SnailItem.
22 public class SnailAlbum extends SingleItemAlbum {
23     @SuppressWarnings("unused")
24     private static final String TAG = "SnailAlbum";
25     private AtomicBoolean mDirty = new AtomicBoolean(false);
26 
SnailAlbum(Path path, SnailItem item)27     public SnailAlbum(Path path, SnailItem item) {
28         super(path, item);
29     }
30 
31     @Override
reload()32     public long reload() {
33         if (mDirty.compareAndSet(true, false)) {
34             ((SnailItem) getItem()).updateVersion();
35             mDataVersion = nextVersionNumber();
36         }
37         return mDataVersion;
38     }
39 
notifyChange()40     public void notifyChange() {
41         mDirty.set(true);
42         notifyContentChanged();
43     }
44 }
45