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
17package com.android.gallery3d.data;
18
19import java.util.concurrent.atomic.AtomicBoolean;
20
21// This is a simple MediaSet which contains only one MediaItem -- a SnailItem.
22public class SnailAlbum extends SingleItemAlbum {
23    @SuppressWarnings("unused")
24    private static final String TAG = "SnailAlbum";
25    private AtomicBoolean mDirty = new AtomicBoolean(false);
26
27    public SnailAlbum(Path path, SnailItem item) {
28        super(path, item);
29    }
30
31    @Override
32    public long reload() {
33        if (mDirty.compareAndSet(true, false)) {
34            ((SnailItem) getItem()).updateVersion();
35            mDataVersion = nextVersionNumber();
36        }
37        return mDataVersion;
38    }
39
40    public void notifyChange() {
41        mDirty.set(true);
42        notifyContentChanged();
43    }
44}
45