ContextWrapper.java revision 247fe74c934cb3fba85aae7e051a8044f460fb11
1/* 2 * Copyright (C) 2006 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 android.content; 18 19import android.content.pm.ApplicationInfo; 20import android.content.pm.PackageManager; 21import android.content.res.AssetManager; 22import android.content.res.Resources; 23import android.database.DatabaseErrorHandler; 24import android.database.sqlite.SQLiteDatabase; 25import android.database.sqlite.SQLiteDatabase.CursorFactory; 26import android.graphics.Bitmap; 27import android.graphics.drawable.Drawable; 28import android.net.Uri; 29import android.os.Bundle; 30import android.os.Handler; 31import android.os.Looper; 32 33import java.io.File; 34import java.io.FileInputStream; 35import java.io.FileNotFoundException; 36import java.io.FileOutputStream; 37import java.io.IOException; 38import java.io.InputStream; 39 40/** 41 * Proxying implementation of Context that simply delegates all of its calls to 42 * another Context. Can be subclassed to modify behavior without changing 43 * the original Context. 44 */ 45public class ContextWrapper extends Context { 46 Context mBase; 47 48 public ContextWrapper(Context base) { 49 mBase = base; 50 } 51 52 /** 53 * Set the base context for this ContextWrapper. All calls will then be 54 * delegated to the base context. Throws 55 * IllegalStateException if a base context has already been set. 56 * 57 * @param base The new base context for this wrapper. 58 */ 59 protected void attachBaseContext(Context base) { 60 if (mBase != null) { 61 throw new IllegalStateException("Base context already set"); 62 } 63 mBase = base; 64 } 65 66 /** 67 * @return the base context as set by the constructor or setBaseContext 68 */ 69 public Context getBaseContext() { 70 return mBase; 71 } 72 73 @Override 74 public AssetManager getAssets() { 75 return mBase.getAssets(); 76 } 77 78 @Override 79 public Resources getResources() 80 { 81 return mBase.getResources(); 82 } 83 84 @Override 85 public PackageManager getPackageManager() { 86 return mBase.getPackageManager(); 87 } 88 89 @Override 90 public ContentResolver getContentResolver() { 91 return mBase.getContentResolver(); 92 } 93 94 @Override 95 public Looper getMainLooper() { 96 return mBase.getMainLooper(); 97 } 98 99 @Override 100 public Context getApplicationContext() { 101 return mBase.getApplicationContext(); 102 } 103 104 @Override 105 public void setTheme(int resid) { 106 mBase.setTheme(resid); 107 } 108 109 /** @hide */ 110 @Override 111 public int getThemeResId() { 112 return mBase.getThemeResId(); 113 } 114 115 @Override 116 public Resources.Theme getTheme() { 117 return mBase.getTheme(); 118 } 119 120 @Override 121 public ClassLoader getClassLoader() { 122 return mBase.getClassLoader(); 123 } 124 125 @Override 126 public String getPackageName() { 127 return mBase.getPackageName(); 128 } 129 130 @Override 131 public ApplicationInfo getApplicationInfo() { 132 return mBase.getApplicationInfo(); 133 } 134 135 @Override 136 public String getPackageResourcePath() { 137 return mBase.getPackageResourcePath(); 138 } 139 140 @Override 141 public String getPackageCodePath() { 142 return mBase.getPackageCodePath(); 143 } 144 145 /** @hide */ 146 @Override 147 public File getSharedPrefsFile(String name) { 148 return mBase.getSharedPrefsFile(name); 149 } 150 151 @Override 152 public SharedPreferences getSharedPreferences(String name, int mode) { 153 return mBase.getSharedPreferences(name, mode); 154 } 155 156 @Override 157 public FileInputStream openFileInput(String name) 158 throws FileNotFoundException { 159 return mBase.openFileInput(name); 160 } 161 162 @Override 163 public FileOutputStream openFileOutput(String name, int mode) 164 throws FileNotFoundException { 165 return mBase.openFileOutput(name, mode); 166 } 167 168 @Override 169 public boolean deleteFile(String name) { 170 return mBase.deleteFile(name); 171 } 172 173 @Override 174 public File getFileStreamPath(String name) { 175 return mBase.getFileStreamPath(name); 176 } 177 178 @Override 179 public String[] fileList() { 180 return mBase.fileList(); 181 } 182 183 @Override 184 public File getFilesDir() { 185 return mBase.getFilesDir(); 186 } 187 188 @Override 189 public File getExternalFilesDir(String type) { 190 return mBase.getExternalFilesDir(type); 191 } 192 193 @Override 194 public File getCacheDir() { 195 return mBase.getCacheDir(); 196 } 197 198 @Override 199 public File getExternalCacheDir() { 200 return mBase.getExternalCacheDir(); 201 } 202 203 @Override 204 public File getDir(String name, int mode) { 205 return mBase.getDir(name, mode); 206 } 207 208 @Override 209 public SQLiteDatabase openOrCreateDatabase(String name, int mode, CursorFactory factory) { 210 return mBase.openOrCreateDatabase(name, mode, factory); 211 } 212 213 @Override 214 public SQLiteDatabase openOrCreateDatabase(String name, int mode, CursorFactory factory, 215 DatabaseErrorHandler errorHandler) { 216 return mBase.openOrCreateDatabase(name, mode, factory, errorHandler); 217 } 218 219 @Override 220 public boolean deleteDatabase(String name) { 221 return mBase.deleteDatabase(name); 222 } 223 224 @Override 225 public File getDatabasePath(String name) { 226 return mBase.getDatabasePath(name); 227 } 228 229 @Override 230 public String[] databaseList() { 231 return mBase.databaseList(); 232 } 233 234 @Override 235 public Drawable getWallpaper() { 236 return mBase.getWallpaper(); 237 } 238 239 @Override 240 public Drawable peekWallpaper() { 241 return mBase.peekWallpaper(); 242 } 243 244 @Override 245 public int getWallpaperDesiredMinimumWidth() { 246 return mBase.getWallpaperDesiredMinimumWidth(); 247 } 248 249 @Override 250 public int getWallpaperDesiredMinimumHeight() { 251 return mBase.getWallpaperDesiredMinimumHeight(); 252 } 253 254 @Override 255 public void setWallpaper(Bitmap bitmap) throws IOException { 256 mBase.setWallpaper(bitmap); 257 } 258 259 @Override 260 public void setWallpaper(InputStream data) throws IOException { 261 mBase.setWallpaper(data); 262 } 263 264 @Override 265 public void clearWallpaper() throws IOException { 266 mBase.clearWallpaper(); 267 } 268 269 @Override 270 public void startActivity(Intent intent) { 271 mBase.startActivity(intent); 272 } 273 274 @Override 275 public void startActivities(Intent[] intents) { 276 mBase.startActivities(intents); 277 } 278 279 @Override 280 public void startIntentSender(IntentSender intent, 281 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 282 throws IntentSender.SendIntentException { 283 mBase.startIntentSender(intent, fillInIntent, flagsMask, 284 flagsValues, extraFlags); 285 } 286 287 @Override 288 public void sendBroadcast(Intent intent) { 289 mBase.sendBroadcast(intent); 290 } 291 292 @Override 293 public void sendBroadcast(Intent intent, String receiverPermission) { 294 mBase.sendBroadcast(intent, receiverPermission); 295 } 296 297 @Override 298 public void sendOrderedBroadcast(Intent intent, 299 String receiverPermission) { 300 mBase.sendOrderedBroadcast(intent, receiverPermission); 301 } 302 303 @Override 304 public void sendOrderedBroadcast( 305 Intent intent, String receiverPermission, BroadcastReceiver resultReceiver, 306 Handler scheduler, int initialCode, String initialData, 307 Bundle initialExtras) { 308 mBase.sendOrderedBroadcast(intent, receiverPermission, 309 resultReceiver, scheduler, initialCode, 310 initialData, initialExtras); 311 } 312 313 @Override 314 public void sendStickyBroadcast(Intent intent) { 315 mBase.sendStickyBroadcast(intent); 316 } 317 318 @Override 319 public void sendStickyOrderedBroadcast( 320 Intent intent, BroadcastReceiver resultReceiver, 321 Handler scheduler, int initialCode, String initialData, 322 Bundle initialExtras) { 323 mBase.sendStickyOrderedBroadcast(intent, 324 resultReceiver, scheduler, initialCode, 325 initialData, initialExtras); 326 } 327 328 @Override 329 public void removeStickyBroadcast(Intent intent) { 330 mBase.removeStickyBroadcast(intent); 331 } 332 333 @Override 334 public Intent registerReceiver( 335 BroadcastReceiver receiver, IntentFilter filter) { 336 return mBase.registerReceiver(receiver, filter); 337 } 338 339 @Override 340 public Intent registerReceiver( 341 BroadcastReceiver receiver, IntentFilter filter, 342 String broadcastPermission, Handler scheduler) { 343 return mBase.registerReceiver(receiver, filter, broadcastPermission, 344 scheduler); 345 } 346 347 @Override 348 public void unregisterReceiver(BroadcastReceiver receiver) { 349 mBase.unregisterReceiver(receiver); 350 } 351 352 @Override 353 public ComponentName startService(Intent service) { 354 return mBase.startService(service); 355 } 356 357 @Override 358 public boolean stopService(Intent name) { 359 return mBase.stopService(name); 360 } 361 362 @Override 363 public boolean bindService(Intent service, ServiceConnection conn, 364 int flags) { 365 return mBase.bindService(service, conn, flags); 366 } 367 368 @Override 369 public void unbindService(ServiceConnection conn) { 370 mBase.unbindService(conn); 371 } 372 373 @Override 374 public boolean startInstrumentation(ComponentName className, 375 String profileFile, Bundle arguments) { 376 return mBase.startInstrumentation(className, profileFile, arguments); 377 } 378 379 @Override 380 public Object getSystemService(String name) { 381 return mBase.getSystemService(name); 382 } 383 384 @Override 385 public int checkPermission(String permission, int pid, int uid) { 386 return mBase.checkPermission(permission, pid, uid); 387 } 388 389 @Override 390 public int checkCallingPermission(String permission) { 391 return mBase.checkCallingPermission(permission); 392 } 393 394 @Override 395 public int checkCallingOrSelfPermission(String permission) { 396 return mBase.checkCallingOrSelfPermission(permission); 397 } 398 399 @Override 400 public void enforcePermission( 401 String permission, int pid, int uid, String message) { 402 mBase.enforcePermission(permission, pid, uid, message); 403 } 404 405 @Override 406 public void enforceCallingPermission(String permission, String message) { 407 mBase.enforceCallingPermission(permission, message); 408 } 409 410 @Override 411 public void enforceCallingOrSelfPermission( 412 String permission, String message) { 413 mBase.enforceCallingOrSelfPermission(permission, message); 414 } 415 416 @Override 417 public void grantUriPermission(String toPackage, Uri uri, int modeFlags) { 418 mBase.grantUriPermission(toPackage, uri, modeFlags); 419 } 420 421 @Override 422 public void revokeUriPermission(Uri uri, int modeFlags) { 423 mBase.revokeUriPermission(uri, modeFlags); 424 } 425 426 @Override 427 public int checkUriPermission(Uri uri, int pid, int uid, int modeFlags) { 428 return mBase.checkUriPermission(uri, pid, uid, modeFlags); 429 } 430 431 @Override 432 public int checkCallingUriPermission(Uri uri, int modeFlags) { 433 return mBase.checkCallingUriPermission(uri, modeFlags); 434 } 435 436 @Override 437 public int checkCallingOrSelfUriPermission(Uri uri, int modeFlags) { 438 return mBase.checkCallingOrSelfUriPermission(uri, modeFlags); 439 } 440 441 @Override 442 public int checkUriPermission(Uri uri, String readPermission, 443 String writePermission, int pid, int uid, int modeFlags) { 444 return mBase.checkUriPermission(uri, readPermission, writePermission, 445 pid, uid, modeFlags); 446 } 447 448 @Override 449 public void enforceUriPermission( 450 Uri uri, int pid, int uid, int modeFlags, String message) { 451 mBase.enforceUriPermission(uri, pid, uid, modeFlags, message); 452 } 453 454 @Override 455 public void enforceCallingUriPermission( 456 Uri uri, int modeFlags, String message) { 457 mBase.enforceCallingUriPermission(uri, modeFlags, message); 458 } 459 460 @Override 461 public void enforceCallingOrSelfUriPermission( 462 Uri uri, int modeFlags, String message) { 463 mBase.enforceCallingOrSelfUriPermission(uri, modeFlags, message); 464 } 465 466 @Override 467 public void enforceUriPermission( 468 Uri uri, String readPermission, String writePermission, 469 int pid, int uid, int modeFlags, String message) { 470 mBase.enforceUriPermission( 471 uri, readPermission, writePermission, pid, uid, modeFlags, 472 message); 473 } 474 475 @Override 476 public Context createPackageContext(String packageName, int flags) 477 throws PackageManager.NameNotFoundException { 478 return mBase.createPackageContext(packageName, flags); 479 } 480 481 @Override 482 public boolean isRestricted() { 483 return mBase.isRestricted(); 484 } 485} 486