AbstractGalleryActivity.java revision f9a0a4306d589b4a4e20554fed512a603426bfa1 
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 com.android.gallery3d.R;
20import com.android.gallery3d.data.DataManager;
21import com.android.gallery3d.data.ImageCacheService;
22import com.android.gallery3d.ui.GLRoot;
23import com.android.gallery3d.ui.GLRootView;
24import com.android.gallery3d.ui.PositionRepository;
25import com.android.gallery3d.util.ThreadPool;
26
27import android.app.ActionBar;
28import android.app.Activity;
29import android.app.AlertDialog;
30import android.content.BroadcastReceiver;
31import android.content.Context;
32import android.content.DialogInterface;
33import android.content.DialogInterface.OnCancelListener;
34import android.content.DialogInterface.OnClickListener;
35import android.content.Intent;
36import android.content.IntentFilter;
37import android.os.Bundle;
38
39public class AbstractGalleryActivity extends Activity implements GalleryActivity {
40    @SuppressWarnings("unused")
41    private static final String TAG = "AbstractGalleryActivity";
42    private GLRootView mGLRootView;
43    private StateManager mStateManager;
44    private PositionRepository mPositionRepository = new PositionRepository();
45
46    private AlertDialog mAlertDialog = null;
47    private BroadcastReceiver mMountReceiver = new BroadcastReceiver() {
48        @Override
49        public void onReceive(Context context, Intent intent) {
50            if (getExternalCacheDir() != null) onStorageReady();
51        }
52    };
53    private IntentFilter mMountFilter = new IntentFilter(Intent.ACTION_MEDIA_MOUNTED);
54
55    @Override
56    protected void onSaveInstanceState(Bundle outState) {
57        mGLRootView.lockRenderThread();
58        try {
59            super.onSaveInstanceState(outState);
60            getStateManager().saveState(outState);
61        } finally {
62            mGLRootView.unlockRenderThread();
63        }
64    }
65
66    public Context getAndroidContext() {
67        return this;
68    }
69
70    public ImageCacheService getImageCacheService() {
71        return ((GalleryApp) getApplication()).getImageCacheService();
72    }
73
74    public DataManager getDataManager() {
75        return ((GalleryApp) getApplication()).getDataManager();
76    }
77
78    public ThreadPool getThreadPool() {
79        return ((GalleryApp) getApplication()).getThreadPool();
80    }
81
82    public GalleryApp getGalleryApplication() {
83        return (GalleryApp) getApplication();
84    }
85
86    public synchronized StateManager getStateManager() {
87        if (mStateManager == null) {
88            mStateManager = new StateManager(this);
89        }
90        return mStateManager;
91    }
92
93    public GLRoot getGLRoot() {
94        return mGLRootView;
95    }
96
97    public PositionRepository getPositionRepository() {
98        return mPositionRepository;
99    }
100
101    @Override
102    public void setContentView(int resId) {
103        super.setContentView(resId);
104        mGLRootView = (GLRootView) findViewById(R.id.gl_root_view);
105    }
106
107    public int getActionBarHeight() {
108        ActionBar actionBar = getActionBar();
109        return actionBar != null ? actionBar.getHeight() : 0;
110    }
111
112    protected void onStorageReady() {
113        if (mAlertDialog != null) {
114            mAlertDialog.dismiss();
115            mAlertDialog = null;
116            unregisterReceiver(mMountReceiver);
117        }
118    }
119
120    @Override
121    protected void onStart() {
122        super.onStart();
123        if (getExternalCacheDir() == null) {
124            OnCancelListener onCancel = new OnCancelListener() {
125                @Override
126                public void onCancel(DialogInterface dialog) {
127                    finish();
128                }
129            };
130            OnClickListener onClick = new OnClickListener() {
131                @Override
132                public void onClick(DialogInterface dialog, int which) {
133                    dialog.cancel();
134                }
135            };
136            mAlertDialog = new AlertDialog.Builder(this)
137                    .setIcon(android.R.drawable.ic_dialog_alert)
138                    .setTitle("No Storage")
139                    .setMessage("No external storage available.")
140                    .setNegativeButton(android.R.string.cancel, onClick)
141                    .setOnCancelListener(onCancel)
142                    .show();
143            registerReceiver(mMountReceiver, mMountFilter);
144        }
145    }
146
147    @Override
148    protected void onStop() {
149        super.onStop();
150        if (mAlertDialog != null) {
151            unregisterReceiver(mMountReceiver);
152            mAlertDialog.dismiss();
153            mAlertDialog = null;
154        }
155    }
156
157    @Override
158    protected void onResume() {
159        super.onResume();
160        mGLRootView.lockRenderThread();
161        try {
162            getStateManager().resume();
163            getDataManager().resume();
164        } finally {
165            mGLRootView.unlockRenderThread();
166        }
167        mGLRootView.onResume();
168    }
169
170    @Override
171    protected void onPause() {
172        super.onPause();
173        mGLRootView.onPause();
174        mGLRootView.lockRenderThread();
175        try {
176            getStateManager().pause();
177            getDataManager().pause();
178        } finally {
179            mGLRootView.unlockRenderThread();
180        }
181    }
182
183    @Override
184    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
185        mGLRootView.lockRenderThread();
186        try {
187            getStateManager().notifyActivityResult(
188                    requestCode, resultCode, data);
189        } finally {
190            mGLRootView.unlockRenderThread();
191        }
192    }
193
194    @Override
195    public GalleryActionBar getGalleryActionBar() {
196        return null;
197    }
198}
199