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      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 
     17 package com.android.gallery3d.app;
     18 
     19 import com.android.gallery3d.data.DataManager;
     20 import com.android.gallery3d.data.DownloadCache;
     21 import com.android.gallery3d.data.ImageCacheService;
     22 import com.android.gallery3d.gadget.WidgetUtils;
     23 import com.android.gallery3d.picasasource.PicasaSource;
     24 import com.android.gallery3d.util.GalleryUtils;
     25 import com.android.gallery3d.util.ThreadPool;
     26 
     27 import android.app.Application;
     28 import android.content.Context;
     29 
     30 import java.io.File;
     31 
     32 public class GalleryAppImpl extends Application implements GalleryApp {
     33 
     34     private static final String DOWNLOAD_FOLDER = "download";
     35     private static final long DOWNLOAD_CAPACITY = 64 * 1024 * 1024; // 64M
     36 
     37     private ImageCacheService mImageCacheService;
     38     private DataManager mDataManager;
     39     private ThreadPool mThreadPool;
     40     private DownloadCache mDownloadCache;
     41 
     42     @Override
     43     public void onCreate() {
     44         super.onCreate();
     45         GalleryUtils.initialize(this);
     46         WidgetUtils.initialize(this);
     47         PicasaSource.initialize(this);
     48     }
     49 
     50     public Context getAndroidContext() {
     51         return this;
     52     }
     53 
     54     public synchronized DataManager getDataManager() {
     55         if (mDataManager == null) {
     56             mDataManager = new DataManager(this);
     57             mDataManager.initializeSourceMap();
     58         }
     59         return mDataManager;
     60     }
     61 
     62     public synchronized ImageCacheService getImageCacheService() {
     63         if (mImageCacheService == null) {
     64             mImageCacheService = new ImageCacheService(getAndroidContext());
     65         }
     66         return mImageCacheService;
     67     }
     68 
     69     public synchronized ThreadPool getThreadPool() {
     70         if (mThreadPool == null) {
     71             mThreadPool = new ThreadPool();
     72         }
     73         return mThreadPool;
     74     }
     75 
     76     public synchronized DownloadCache getDownloadCache() {
     77         if (mDownloadCache == null) {
     78             File cacheDir = new File(getExternalCacheDir(), DOWNLOAD_FOLDER);
     79 
     80             if (!cacheDir.isDirectory()) cacheDir.mkdirs();
     81 
     82             if (!cacheDir.isDirectory()) {
     83                 throw new RuntimeException(
     84                         "fail to create: " + cacheDir.getAbsolutePath());
     85             }
     86             mDownloadCache = new DownloadCache(this, cacheDir, DOWNLOAD_CAPACITY);
     87         }
     88         return mDownloadCache;
     89     }
     90 }
     91