AbstractGalleryActivity.java revision ca6f04e27bbcab953bd3f9dcf50476a1c4b70aac 
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.annotation.TargetApi;
20import android.app.Activity;
21import android.app.AlertDialog;
22import android.content.BroadcastReceiver;
23import android.content.ComponentName;
24import android.content.Context;
25import android.content.DialogInterface;
26import android.content.DialogInterface.OnCancelListener;
27import android.content.DialogInterface.OnClickListener;
28import android.content.Intent;
29import android.content.IntentFilter;
30import android.content.ServiceConnection;
31import android.content.res.Configuration;
32import android.os.Bundle;
33import android.os.IBinder;
34import android.view.Menu;
35import android.view.MenuItem;
36import android.view.Window;
37import android.view.WindowManager;
38
39import com.android.gallery3d.R;
40import com.android.gallery3d.common.ApiHelper;
41import com.android.gallery3d.data.DataManager;
42import com.android.gallery3d.data.MediaItem;
43import com.android.gallery3d.ui.GLRoot;
44import com.android.gallery3d.ui.GLRootView;
45import com.android.gallery3d.util.LightCycleHelper.PanoramaViewHelper;
46import com.android.gallery3d.util.ThreadPool;
47import com.android.photos.data.GalleryBitmapPool;
48
49public class AbstractGalleryActivity extends Activity implements GalleryContext {
50    @SuppressWarnings("unused")
51    private static final String TAG = "AbstractGalleryActivity";
52    private GLRootView mGLRootView;
53    private StateManager mStateManager;
54    private GalleryActionBar mActionBar;
55    private OrientationManager mOrientationManager;
56    private TransitionStore mTransitionStore = new TransitionStore();
57    private boolean mDisableToggleStatusBar;
58    private PanoramaViewHelper mPanoramaViewHelper;
59
60    private AlertDialog mAlertDialog = null;
61    private BroadcastReceiver mMountReceiver = new BroadcastReceiver() {
62        @Override
63        public void onReceive(Context context, Intent intent) {
64            if (getExternalCacheDir() != null) onStorageReady();
65        }
66    };
67    private IntentFilter mMountFilter = new IntentFilter(Intent.ACTION_MEDIA_MOUNTED);
68
69    @Override
70    protected void onCreate(Bundle savedInstanceState) {
71        super.onCreate(savedInstanceState);
72        mOrientationManager = new OrientationManager(this);
73        toggleStatusBarByOrientation();
74        getWindow().setBackgroundDrawable(null);
75        mPanoramaViewHelper = new PanoramaViewHelper(this);
76        mPanoramaViewHelper.onCreate();
77        doBindBatchService();
78    }
79
80    @Override
81    protected void onSaveInstanceState(Bundle outState) {
82        mGLRootView.lockRenderThread();
83        try {
84            super.onSaveInstanceState(outState);
85            getStateManager().saveState(outState);
86        } finally {
87            mGLRootView.unlockRenderThread();
88        }
89    }
90
91    @Override
92    public void onConfigurationChanged(Configuration config) {
93        super.onConfigurationChanged(config);
94        mStateManager.onConfigurationChange(config);
95        getGalleryActionBar().onConfigurationChanged();
96        invalidateOptionsMenu();
97        toggleStatusBarByOrientation();
98    }
99
100    @Override
101    public boolean onCreateOptionsMenu(Menu menu) {
102        super.onCreateOptionsMenu(menu);
103        return getStateManager().createOptionsMenu(menu);
104    }
105
106    @Override
107    public Context getAndroidContext() {
108        return this;
109    }
110
111    @Override
112    public DataManager getDataManager() {
113        return ((GalleryApp) getApplication()).getDataManager();
114    }
115
116    @Override
117    public ThreadPool getThreadPool() {
118        return ((GalleryApp) getApplication()).getThreadPool();
119    }
120
121    public synchronized StateManager getStateManager() {
122        if (mStateManager == null) {
123            mStateManager = new StateManager(this);
124        }
125        return mStateManager;
126    }
127
128    public GLRoot getGLRoot() {
129        return mGLRootView;
130    }
131
132    public OrientationManager getOrientationManager() {
133        return mOrientationManager;
134    }
135
136    @Override
137    public void setContentView(int resId) {
138        super.setContentView(resId);
139        mGLRootView = (GLRootView) findViewById(R.id.gl_root_view);
140    }
141
142    protected void onStorageReady() {
143        if (mAlertDialog != null) {
144            mAlertDialog.dismiss();
145            mAlertDialog = null;
146            unregisterReceiver(mMountReceiver);
147        }
148    }
149
150    @Override
151    protected void onStart() {
152        super.onStart();
153        if (getExternalCacheDir() == null) {
154            OnCancelListener onCancel = new OnCancelListener() {
155                @Override
156                public void onCancel(DialogInterface dialog) {
157                    finish();
158                }
159            };
160            OnClickListener onClick = new OnClickListener() {
161                @Override
162                public void onClick(DialogInterface dialog, int which) {
163                    dialog.cancel();
164                }
165            };
166            AlertDialog.Builder builder = new AlertDialog.Builder(this)
167                    .setTitle(R.string.no_external_storage_title)
168                    .setMessage(R.string.no_external_storage)
169                    .setNegativeButton(android.R.string.cancel, onClick)
170                    .setOnCancelListener(onCancel);
171            if (ApiHelper.HAS_SET_ICON_ATTRIBUTE) {
172                setAlertDialogIconAttribute(builder);
173            } else {
174                builder.setIcon(android.R.drawable.ic_dialog_alert);
175            }
176            mAlertDialog = builder.show();
177            registerReceiver(mMountReceiver, mMountFilter);
178        }
179        mPanoramaViewHelper.onStart();
180    }
181
182    @TargetApi(ApiHelper.VERSION_CODES.HONEYCOMB)
183    private static void setAlertDialogIconAttribute(
184            AlertDialog.Builder builder) {
185        builder.setIconAttribute(android.R.attr.alertDialogIcon);
186    }
187
188    @Override
189    protected void onStop() {
190        super.onStop();
191        if (mAlertDialog != null) {
192            unregisterReceiver(mMountReceiver);
193            mAlertDialog.dismiss();
194            mAlertDialog = null;
195        }
196        mPanoramaViewHelper.onStop();
197    }
198
199    @Override
200    protected void onResume() {
201        super.onResume();
202        mGLRootView.lockRenderThread();
203        try {
204            getStateManager().resume();
205            getDataManager().resume();
206        } finally {
207            mGLRootView.unlockRenderThread();
208        }
209        mGLRootView.onResume();
210        mOrientationManager.resume();
211    }
212
213    @Override
214    protected void onPause() {
215        super.onPause();
216        mOrientationManager.pause();
217        mGLRootView.onPause();
218        mGLRootView.lockRenderThread();
219        try {
220            getStateManager().pause();
221            getDataManager().pause();
222        } finally {
223            mGLRootView.unlockRenderThread();
224        }
225        GalleryBitmapPool.getInstance().clear();
226        MediaItem.getBytesBufferPool().clear();
227    }
228
229    @Override
230    protected void onDestroy() {
231        super.onDestroy();
232        mGLRootView.lockRenderThread();
233        try {
234            getStateManager().destroy();
235        } finally {
236            mGLRootView.unlockRenderThread();
237        }
238        doUnbindBatchService();
239    }
240
241    @Override
242    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
243        mGLRootView.lockRenderThread();
244        try {
245            getStateManager().notifyActivityResult(
246                    requestCode, resultCode, data);
247        } finally {
248            mGLRootView.unlockRenderThread();
249        }
250    }
251
252    @Override
253    public void onBackPressed() {
254        // send the back event to the top sub-state
255        GLRoot root = getGLRoot();
256        root.lockRenderThread();
257        try {
258            getStateManager().onBackPressed();
259        } finally {
260            root.unlockRenderThread();
261        }
262    }
263
264    public GalleryActionBar getGalleryActionBar() {
265        if (mActionBar == null) {
266            mActionBar = new GalleryActionBar(this);
267        }
268        return mActionBar;
269    }
270
271    @Override
272    public boolean onOptionsItemSelected(MenuItem item) {
273        GLRoot root = getGLRoot();
274        root.lockRenderThread();
275        try {
276            return getStateManager().itemSelected(item);
277        } finally {
278            root.unlockRenderThread();
279        }
280    }
281
282    protected void disableToggleStatusBar() {
283        mDisableToggleStatusBar = true;
284    }
285
286    // Shows status bar in portrait view, hide in landscape view
287    private void toggleStatusBarByOrientation() {
288        if (mDisableToggleStatusBar) return;
289
290        Window win = getWindow();
291        if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
292            win.clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
293        } else {
294            win.addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
295        }
296    }
297
298    public TransitionStore getTransitionStore() {
299        return mTransitionStore;
300    }
301
302    public PanoramaViewHelper getPanoramaViewHelper() {
303        return mPanoramaViewHelper;
304    }
305
306    protected boolean isFullscreen() {
307        return (getWindow().getAttributes().flags
308                & WindowManager.LayoutParams.FLAG_FULLSCREEN) != 0;
309    }
310
311    private BatchService mBatchService;
312    private boolean mBatchServiceIsBound = false;
313    private ServiceConnection mBatchServiceConnection = new ServiceConnection() {
314        public void onServiceConnected(ComponentName className, IBinder service) {
315            mBatchService = ((BatchService.LocalBinder)service).getService();
316        }
317
318        public void onServiceDisconnected(ComponentName className) {
319            mBatchService = null;
320        }
321    };
322
323    private void doBindBatchService() {
324        bindService(new Intent(this, BatchService.class), mBatchServiceConnection, Context.BIND_AUTO_CREATE);
325        mBatchServiceIsBound = true;
326    }
327
328    private void doUnbindBatchService() {
329        if (mBatchServiceIsBound) {
330            // Detach our existing connection.
331            unbindService(mBatchServiceConnection);
332            mBatchServiceIsBound = false;
333        }
334    }
335
336    public ThreadPool getBatchServiceThreadPoolIfAvailable() {
337        if (mBatchServiceIsBound && mBatchService != null) {
338            return mBatchService.getThreadPool();
339        } else {
340            throw new RuntimeException("Batch service unavailable");
341        }
342    }
343}
344