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.IntentService;
20import android.content.BroadcastReceiver;
21import android.content.Context;
22import android.content.Intent;
23import android.content.SharedPreferences;
24import android.preference.PreferenceManager;
25
26import com.android.gallery3d.picasasource.PicasaSource;
27import com.android.gallery3d.util.LightCycleHelper;
28
29public class PackagesMonitor extends BroadcastReceiver {
30    public static final String KEY_PACKAGES_VERSION  = "packages-version";
31
32    public synchronized static int getPackagesVersion(Context context) {
33        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
34        return prefs.getInt(KEY_PACKAGES_VERSION, 1);
35    }
36
37    @Override
38    public void onReceive(final Context context, final Intent intent) {
39        intent.setClass(context, AsyncService.class);
40        context.startService(intent);
41    }
42
43    public static class AsyncService extends IntentService {
44        public AsyncService() {
45            super("GalleryPackagesMonitorAsync");
46        }
47
48        @Override
49        protected void onHandleIntent(Intent intent) {
50            onReceiveAsync(this, intent);
51        }
52    }
53
54    // Runs in a background thread.
55    private static void onReceiveAsync(Context context, Intent intent) {
56        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
57
58        int version = prefs.getInt(KEY_PACKAGES_VERSION, 1);
59        prefs.edit().putInt(KEY_PACKAGES_VERSION, version + 1).commit();
60
61        String action = intent.getAction();
62        String packageName = intent.getData().getSchemeSpecificPart();
63        if (Intent.ACTION_PACKAGE_ADDED.equals(action)) {
64            PicasaSource.onPackageAdded(context, packageName);
65        } else if (Intent.ACTION_PACKAGE_REMOVED.equals(action)) {
66            PicasaSource.onPackageRemoved(context, packageName);
67        } else if (Intent.ACTION_PACKAGE_CHANGED.equals(action)) {
68            PicasaSource.onPackageChanged(context, packageName);
69        }
70    }
71}
72