WidgetService.java revision ba0c994c63b5dd8b8c36efa6b7c0a7cb4537d0ee 
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.gadget;
18
19import android.annotation.TargetApi;
20import android.appwidget.AppWidgetManager;
21import android.content.Intent;
22import android.graphics.Bitmap;
23import android.net.Uri;
24import android.widget.RemoteViews;
25import android.widget.RemoteViewsService;
26
27import com.android.gallery3d.R;
28import com.android.gallery3d.app.GalleryApp;
29import com.android.gallery3d.common.ApiHelper;
30import com.android.gallery3d.data.ContentListener;
31
32@TargetApi(ApiHelper.VERSION_CODES.HONEYCOMB)
33public class WidgetService extends RemoteViewsService {
34
35    @SuppressWarnings("unused")
36    private static final String TAG = "GalleryAppWidgetService";
37
38    public static final String EXTRA_WIDGET_TYPE = "widget-type";
39    public static final String EXTRA_ALBUM_PATH = "album-path";
40
41    @Override
42    public RemoteViewsFactory onGetViewFactory(Intent intent) {
43        int id = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
44                AppWidgetManager.INVALID_APPWIDGET_ID);
45        int type = intent.getIntExtra(EXTRA_WIDGET_TYPE, 0);
46        String albumPath = intent.getStringExtra(EXTRA_ALBUM_PATH);
47
48        return new PhotoRVFactory((GalleryApp) getApplicationContext(),
49                id, type, albumPath);
50    }
51
52    private static class PhotoRVFactory implements
53            RemoteViewsService.RemoteViewsFactory, ContentListener {
54
55        private final int mAppWidgetId;
56        private final int mType;
57        private final String mAlbumPath;
58        private final GalleryApp mApp;
59
60        private WidgetSource mSource;
61
62        public PhotoRVFactory(GalleryApp app, int id, int type, String albumPath) {
63            mApp = app;
64            mAppWidgetId = id;
65            mType = type;
66            mAlbumPath = albumPath;
67        }
68
69        @Override
70        public void onCreate() {
71            if (mType == WidgetDatabaseHelper.TYPE_ALBUM) {
72                mSource = new MediaSetSource(mApp.getDataManager(), mAlbumPath);
73            } else {
74                mSource = new LocalPhotoSource(mApp.getAndroidContext());
75            }
76            mSource.setContentListener(this);
77            AppWidgetManager.getInstance(mApp.getAndroidContext())
78                    .notifyAppWidgetViewDataChanged(
79                    mAppWidgetId, R.id.appwidget_stack_view);
80        }
81
82        @Override
83        public void onDestroy() {
84            mSource.close();
85            mSource = null;
86        }
87
88        @Override
89        public int getCount() {
90            return mSource.size();
91        }
92
93        @Override
94        public long getItemId(int position) {
95            return position;
96        }
97
98        @Override
99        public int getViewTypeCount() {
100            return 1;
101        }
102
103        @Override
104        public boolean hasStableIds() {
105            return true;
106        }
107
108        @Override
109        public RemoteViews getLoadingView() {
110            RemoteViews rv = new RemoteViews(
111                    mApp.getAndroidContext().getPackageName(),
112                    R.layout.appwidget_loading_item);
113            rv.setProgressBar(R.id.appwidget_loading_item, 0, 0, true);
114            return rv;
115        }
116
117        @Override
118        public RemoteViews getViewAt(int position) {
119            Bitmap bitmap = mSource.getImage(position);
120            if (bitmap == null) return getLoadingView();
121            RemoteViews views = new RemoteViews(
122                    mApp.getAndroidContext().getPackageName(),
123                    R.layout.appwidget_photo_item);
124            views.setImageViewBitmap(R.id.appwidget_photo_item, bitmap);
125            views.setOnClickFillInIntent(R.id.appwidget_photo_item, new Intent()
126                    .setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
127                    .setData(mSource.getContentUri(position)));
128            return views;
129        }
130
131        @Override
132        public void onDataSetChanged() {
133            mSource.reload();
134        }
135
136        @Override
137        public void onContentDirty() {
138            AppWidgetManager.getInstance(mApp.getAndroidContext())
139                    .notifyAppWidgetViewDataChanged(
140                    mAppWidgetId, R.id.appwidget_stack_view);
141        }
142    }
143}
144