1/*
2 * Copyright (C) 2010 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.app;
18
19import android.app.Application;
20import android.content.Context;
21import android.os.AsyncTask;
22
23import com.android.gallery3d.data.DataManager;
24import com.android.gallery3d.data.DownloadCache;
25import com.android.gallery3d.data.ImageCacheService;
26import com.android.gallery3d.gadget.WidgetUtils;
27import com.android.gallery3d.picasasource.PicasaSource;
28import com.android.gallery3d.util.GalleryUtils;
29import com.android.gallery3d.util.LightCycleHelper;
30import com.android.gallery3d.util.ThreadPool;
31import com.android.gallery3d.util.UsageStatistics;
32import com.android.photos.data.MediaCache;
33
34import java.io.File;
35
36public class GalleryAppImpl extends Application implements GalleryApp {
37
38    private static final String DOWNLOAD_FOLDER = "download";
39    private static final long DOWNLOAD_CAPACITY = 64 * 1024 * 1024; // 64M
40
41    private ImageCacheService mImageCacheService;
42    private Object mLock = new Object();
43    private DataManager mDataManager;
44    private ThreadPool mThreadPool;
45    private DownloadCache mDownloadCache;
46    private StitchingProgressManager mStitchingProgressManager;
47
48    @Override
49    public void onCreate() {
50        super.onCreate();
51        com.android.camera.Util.initialize(this);
52        initializeAsyncTask();
53        GalleryUtils.initialize(this);
54        WidgetUtils.initialize(this);
55        PicasaSource.initialize(this);
56        UsageStatistics.initialize(this);
57        MediaCache.initialize(this);
58
59        mStitchingProgressManager = LightCycleHelper.createStitchingManagerInstance(this);
60        if (mStitchingProgressManager != null) {
61            mStitchingProgressManager.addChangeListener(getDataManager());
62        }
63    }
64
65    @Override
66    public Context getAndroidContext() {
67        return this;
68    }
69
70    @Override
71    public synchronized DataManager getDataManager() {
72        if (mDataManager == null) {
73            mDataManager = new DataManager(this);
74            mDataManager.initializeSourceMap();
75        }
76        return mDataManager;
77    }
78
79    @Override
80    public StitchingProgressManager getStitchingProgressManager() {
81        return mStitchingProgressManager;
82    }
83
84    @Override
85    public ImageCacheService getImageCacheService() {
86        // This method may block on file I/O so a dedicated lock is needed here.
87        synchronized (mLock) {
88            if (mImageCacheService == null) {
89                mImageCacheService = new ImageCacheService(getAndroidContext());
90            }
91            return mImageCacheService;
92        }
93    }
94
95    @Override
96    public synchronized ThreadPool getThreadPool() {
97        if (mThreadPool == null) {
98            mThreadPool = new ThreadPool();
99        }
100        return mThreadPool;
101    }
102
103    @Override
104    public synchronized DownloadCache getDownloadCache() {
105        if (mDownloadCache == null) {
106            File cacheDir = new File(getExternalCacheDir(), DOWNLOAD_FOLDER);
107
108            if (!cacheDir.isDirectory()) cacheDir.mkdirs();
109
110            if (!cacheDir.isDirectory()) {
111                throw new RuntimeException(
112                        "fail to create: " + cacheDir.getAbsolutePath());
113            }
114            mDownloadCache = new DownloadCache(this, cacheDir, DOWNLOAD_CAPACITY);
115        }
116        return mDownloadCache;
117    }
118
119    private void initializeAsyncTask() {
120        // AsyncTask class needs to be loaded in UI thread.
121        // So we load it here to comply the rule.
122        try {
123            Class.forName(AsyncTask.class.getName());
124        } catch (ClassNotFoundException e) {
125        }
126    }
127}
128