AppWidgetService.java revision 20e809870d8ac1e5b848f2daf51b2272ef89bdfc
1/* 2 * Copyright (C) 2007 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.server; 18 19import android.app.AlarmManager; 20import android.app.PendingIntent; 21import android.appwidget.AppWidgetManager; 22import android.appwidget.AppWidgetProviderInfo; 23import android.content.BroadcastReceiver; 24import android.content.ComponentName; 25import android.content.Context; 26import android.content.Intent; 27import android.content.IntentFilter; 28import android.content.ServiceConnection; 29import android.content.pm.PackageManager; 30import android.os.Bundle; 31import android.os.IBinder; 32import android.os.RemoteException; 33import android.os.UserHandle; 34import android.util.Pair; 35import android.util.Slog; 36import android.util.SparseArray; 37import android.widget.RemoteViews; 38 39import com.android.internal.appwidget.IAppWidgetHost; 40import com.android.internal.appwidget.IAppWidgetService; 41import com.android.internal.widget.IRemoteViewsAdapterConnection; 42 43import java.io.FileDescriptor; 44import java.io.PrintWriter; 45import java.util.ArrayList; 46import java.util.List; 47import java.util.Locale; 48 49 50/** 51 * Redirects calls to this service to the instance of the service for the appropriate user. 52 */ 53class AppWidgetService extends IAppWidgetService.Stub 54{ 55 private static final String TAG = "AppWidgetService"; 56 57 /* 58 * When identifying a Host or Provider based on the calling process, use the uid field. 59 * When identifying a Host or Provider based on a package manager broadcast, use the 60 * package given. 61 */ 62 63 static class Provider { 64 int uid; 65 AppWidgetProviderInfo info; 66 ArrayList<AppWidgetId> instances = new ArrayList<AppWidgetId>(); 67 PendingIntent broadcast; 68 boolean zombie; // if we're in safe mode, don't prune this just because nobody references it 69 70 int tag; // for use while saving state (the index) 71 } 72 73 static class Host { 74 int uid; 75 int hostId; 76 String packageName; 77 ArrayList<AppWidgetId> instances = new ArrayList<AppWidgetId>(); 78 IAppWidgetHost callbacks; 79 boolean zombie; // if we're in safe mode, don't prune this just because nobody references it 80 81 int tag; // for use while saving state (the index) 82 } 83 84 static class AppWidgetId { 85 int appWidgetId; 86 Provider provider; 87 RemoteViews views; 88 Host host; 89 } 90 91 /** 92 * Acts as a proxy between the ServiceConnection and the RemoteViewsAdapterConnection. 93 * This needs to be a static inner class since a reference to the ServiceConnection is held 94 * globally and may lead us to leak AppWidgetService instances (if there were more than one). 95 */ 96 static class ServiceConnectionProxy implements ServiceConnection { 97 private final IBinder mConnectionCb; 98 99 ServiceConnectionProxy(Pair<Integer, Intent.FilterComparison> key, IBinder connectionCb) { 100 mConnectionCb = connectionCb; 101 } 102 public void onServiceConnected(ComponentName name, IBinder service) { 103 final IRemoteViewsAdapterConnection cb = 104 IRemoteViewsAdapterConnection.Stub.asInterface(mConnectionCb); 105 try { 106 cb.onServiceConnected(service); 107 } catch (Exception e) { 108 e.printStackTrace(); 109 } 110 } 111 public void onServiceDisconnected(ComponentName name) { 112 disconnect(); 113 } 114 public void disconnect() { 115 final IRemoteViewsAdapterConnection cb = 116 IRemoteViewsAdapterConnection.Stub.asInterface(mConnectionCb); 117 try { 118 cb.onServiceDisconnected(); 119 } catch (Exception e) { 120 e.printStackTrace(); 121 } 122 } 123 } 124 125 Context mContext; 126 Locale mLocale; 127 PackageManager mPackageManager; 128 AlarmManager mAlarmManager; 129 ArrayList<Provider> mInstalledProviders = new ArrayList<Provider>(); 130 int mNextAppWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID + 1; 131 final ArrayList<AppWidgetId> mAppWidgetIds = new ArrayList<AppWidgetId>(); 132 ArrayList<Host> mHosts = new ArrayList<Host>(); 133 boolean mSafeMode; 134 135 136 private final SparseArray<AppWidgetServiceImpl> mAppWidgetServices; 137 138 AppWidgetService(Context context) { 139 mContext = context; 140 mAppWidgetServices = new SparseArray<AppWidgetServiceImpl>(5); 141 AppWidgetServiceImpl primary = new AppWidgetServiceImpl(context, 0); 142 mAppWidgetServices.append(0, primary); 143 } 144 145 public void systemReady(boolean safeMode) { 146 mSafeMode = safeMode; 147 148 mAppWidgetServices.get(0).systemReady(safeMode); 149 150 // Register for the boot completed broadcast, so we can send the 151 // ENABLE broacasts. If we try to send them now, they time out, 152 // because the system isn't ready to handle them yet. 153 mContext.registerReceiverAsUser(mBroadcastReceiver, UserHandle.ALL, 154 new IntentFilter(Intent.ACTION_BOOT_COMPLETED), null, null); 155 156 // Register for configuration changes so we can update the names 157 // of the widgets when the locale changes. 158 mContext.registerReceiver(mBroadcastReceiver, new IntentFilter( 159 Intent.ACTION_CONFIGURATION_CHANGED), null, null); 160 161 // Register for broadcasts about package install, etc., so we can 162 // update the provider list. 163 IntentFilter filter = new IntentFilter(); 164 filter.addAction(Intent.ACTION_PACKAGE_ADDED); 165 filter.addAction(Intent.ACTION_PACKAGE_CHANGED); 166 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 167 filter.addDataScheme("package"); 168 mContext.registerReceiverAsUser(mBroadcastReceiver, UserHandle.ALL, 169 filter, null, null); 170 // Register for events related to sdcard installation. 171 IntentFilter sdFilter = new IntentFilter(); 172 sdFilter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE); 173 sdFilter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE); 174 mContext.registerReceiverAsUser(mBroadcastReceiver, UserHandle.ALL, 175 sdFilter, null, null); 176 177 IntentFilter userFilter = new IntentFilter(); 178 userFilter.addAction(Intent.ACTION_USER_REMOVED); 179 mContext.registerReceiver(new BroadcastReceiver() { 180 @Override 181 public void onReceive(Context context, Intent intent) { 182 onUserRemoved(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, -1)); 183 } 184 }, userFilter); 185 186 IntentFilter userStopFilter = new IntentFilter(); 187 userStopFilter.addAction(Intent.ACTION_USER_STOPPED); 188 mContext.registerReceiverAsUser(new BroadcastReceiver() { 189 @Override 190 public void onReceive(Context context, Intent intent) { 191 onUserStopped(getSendingUserId()); 192 } 193 }, UserHandle.ALL, userFilter, null, null); 194 } 195 196 @Override 197 public int allocateAppWidgetId(String packageName, int hostId) throws RemoteException { 198 return getImplForUser(UserHandle.getCallingUserId()).allocateAppWidgetId( 199 packageName, hostId); 200 } 201 202 @Override 203 public void deleteAppWidgetId(int appWidgetId) throws RemoteException { 204 getImplForUser(UserHandle.getCallingUserId()).deleteAppWidgetId(appWidgetId); 205 } 206 207 @Override 208 public void deleteHost(int hostId) throws RemoteException { 209 getImplForUser(UserHandle.getCallingUserId()).deleteHost(hostId); 210 } 211 212 @Override 213 public void deleteAllHosts() throws RemoteException { 214 getImplForUser(UserHandle.getCallingUserId()).deleteAllHosts(); 215 } 216 217 @Override 218 public void bindAppWidgetId(int appWidgetId, ComponentName provider) throws RemoteException { 219 getImplForUser(UserHandle.getCallingUserId()).bindAppWidgetId(appWidgetId, provider); 220 } 221 222 @Override 223 public boolean bindAppWidgetIdIfAllowed( 224 String packageName, int appWidgetId, ComponentName provider) throws RemoteException { 225 return getImplForUser(UserHandle.getCallingUserId()).bindAppWidgetIdIfAllowed( 226 packageName, appWidgetId, provider); 227 } 228 229 @Override 230 public boolean hasBindAppWidgetPermission(String packageName) throws RemoteException { 231 return getImplForUser(UserHandle.getCallingUserId()).hasBindAppWidgetPermission( 232 packageName); 233 } 234 235 @Override 236 public void setBindAppWidgetPermission(String packageName, boolean permission) 237 throws RemoteException { 238 getImplForUser(UserHandle.getCallingUserId()).setBindAppWidgetPermission( 239 packageName, permission); 240 } 241 242 @Override 243 public void bindRemoteViewsService(int appWidgetId, Intent intent, IBinder connection) 244 throws RemoteException { 245 getImplForUser(UserHandle.getCallingUserId()).bindRemoteViewsService( 246 appWidgetId, intent, connection); 247 } 248 249 @Override 250 public int[] startListening(IAppWidgetHost host, String packageName, int hostId, 251 List<RemoteViews> updatedViews) throws RemoteException { 252 return getImplForUser(UserHandle.getCallingUserId()).startListening(host, 253 packageName, hostId, updatedViews); 254 } 255 256 public void onUserRemoved(int userId) { 257 AppWidgetServiceImpl impl = mAppWidgetServices.get(userId); 258 if (userId < 1) return; 259 260 if (impl == null) { 261 AppWidgetServiceImpl.getSettingsFile(userId).delete(); 262 } else { 263 impl.onUserRemoved(); 264 } 265 } 266 267 public void onUserStopped(int userId) { 268 } 269 270 private AppWidgetServiceImpl getImplForUser(int userId) { 271 AppWidgetServiceImpl service = mAppWidgetServices.get(userId); 272 if (service == null) { 273 Slog.e(TAG, "Unable to find AppWidgetServiceImpl for the current user"); 274 // TODO: Verify that it's a valid user 275 service = new AppWidgetServiceImpl(mContext, userId); 276 service.systemReady(mSafeMode); 277 // Assume that BOOT_COMPLETED was received, as this is a non-primary user. 278 service.sendInitialBroadcasts(); 279 mAppWidgetServices.append(userId, service); 280 } 281 282 return service; 283 } 284 285 @Override 286 public int[] getAppWidgetIds(ComponentName provider) throws RemoteException { 287 return getImplForUser(UserHandle.getCallingUserId()).getAppWidgetIds(provider); 288 } 289 290 @Override 291 public AppWidgetProviderInfo getAppWidgetInfo(int appWidgetId) throws RemoteException { 292 return getImplForUser(UserHandle.getCallingUserId()).getAppWidgetInfo(appWidgetId); 293 } 294 295 @Override 296 public RemoteViews getAppWidgetViews(int appWidgetId) throws RemoteException { 297 return getImplForUser(UserHandle.getCallingUserId()).getAppWidgetViews(appWidgetId); 298 } 299 300 @Override 301 public void updateAppWidgetOptions(int appWidgetId, Bundle options) { 302 getImplForUser(UserHandle.getCallingUserId()).updateAppWidgetOptions(appWidgetId, options); 303 } 304 305 @Override 306 public Bundle getAppWidgetOptions(int appWidgetId) { 307 return getImplForUser(UserHandle.getCallingUserId()).getAppWidgetOptions(appWidgetId); 308 } 309 310 static int[] getAppWidgetIds(Provider p) { 311 int instancesSize = p.instances.size(); 312 int appWidgetIds[] = new int[instancesSize]; 313 for (int i=0; i<instancesSize; i++) { 314 appWidgetIds[i] = p.instances.get(i).appWidgetId; 315 } 316 return appWidgetIds; 317 } 318 319 @Override 320 public List<AppWidgetProviderInfo> getInstalledProviders() throws RemoteException { 321 return getImplForUser(UserHandle.getCallingUserId()).getInstalledProviders(); 322 } 323 324 @Override 325 public void notifyAppWidgetViewDataChanged(int[] appWidgetIds, int viewId) 326 throws RemoteException { 327 getImplForUser(UserHandle.getCallingUserId()).notifyAppWidgetViewDataChanged( 328 appWidgetIds, viewId); 329 } 330 331 @Override 332 public void partiallyUpdateAppWidgetIds(int[] appWidgetIds, RemoteViews views) 333 throws RemoteException { 334 getImplForUser(UserHandle.getCallingUserId()).partiallyUpdateAppWidgetIds( 335 appWidgetIds, views); 336 } 337 338 @Override 339 public void stopListening(int hostId) throws RemoteException { 340 getImplForUser(UserHandle.getCallingUserId()).stopListening(hostId); 341 } 342 343 @Override 344 public void unbindRemoteViewsService(int appWidgetId, Intent intent) throws RemoteException { 345 getImplForUser(UserHandle.getCallingUserId()).unbindRemoteViewsService( 346 appWidgetId, intent); 347 } 348 349 @Override 350 public void updateAppWidgetIds(int[] appWidgetIds, RemoteViews views) throws RemoteException { 351 getImplForUser(UserHandle.getCallingUserId()).updateAppWidgetIds(appWidgetIds, views); 352 } 353 354 @Override 355 public void updateAppWidgetProvider(ComponentName provider, RemoteViews views) 356 throws RemoteException { 357 getImplForUser(UserHandle.getCallingUserId()).updateAppWidgetProvider(provider, views); 358 } 359 360 @Override 361 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 362 // Dump the state of all the app widget providers 363 for (int i = 0; i < mAppWidgetServices.size(); i++) { 364 AppWidgetServiceImpl service = mAppWidgetServices.valueAt(i); 365 service.dump(fd, pw, args); 366 } 367 } 368 369 BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() { 370 public void onReceive(Context context, Intent intent) { 371 String action = intent.getAction(); 372 // Slog.d(TAG, "received " + action); 373 if (Intent.ACTION_BOOT_COMPLETED.equals(action)) { 374 int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, -1); 375 if (userId >= 0) { 376 getImplForUser(userId).sendInitialBroadcasts(); 377 } else { 378 Slog.w(TAG, "Not user handle supplied in " + intent); 379 } 380 } else if (Intent.ACTION_CONFIGURATION_CHANGED.equals(action)) { 381 for (int i = 0; i < mAppWidgetServices.size(); i++) { 382 AppWidgetServiceImpl service = mAppWidgetServices.valueAt(i); 383 service.onConfigurationChanged(); 384 } 385 } else { 386 int sendingUser = getSendingUserId(); 387 if (sendingUser == UserHandle.USER_ALL) { 388 for (int i = 0; i < mAppWidgetServices.size(); i++) { 389 AppWidgetServiceImpl service = mAppWidgetServices.valueAt(i); 390 service.onBroadcastReceived(intent); 391 } 392 } else { 393 AppWidgetServiceImpl service = mAppWidgetServices.get(sendingUser); 394 if (service != null) { 395 service.onBroadcastReceived(intent); 396 } 397 } 398 } 399 } 400 }; 401} 402