ContextWrapper.java revision 8264408f5995534f8e3147b001664ea0df52aaa5
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 getObbDir() { 195 return mBase.getObbDir(); 196 } 197 198 @Override 199 public File getCacheDir() { 200 return mBase.getCacheDir(); 201 } 202 203 @Override 204 public File getExternalCacheDir() { 205 return mBase.getExternalCacheDir(); 206 } 207 208 @Override 209 public File getDir(String name, int mode) { 210 return mBase.getDir(name, mode); 211 } 212 213 @Override 214 public SQLiteDatabase openOrCreateDatabase(String name, int mode, CursorFactory factory) { 215 return mBase.openOrCreateDatabase(name, mode, factory); 216 } 217 218 @Override 219 public SQLiteDatabase openOrCreateDatabase(String name, int mode, CursorFactory factory, 220 DatabaseErrorHandler errorHandler) { 221 return mBase.openOrCreateDatabase(name, mode, factory, errorHandler); 222 } 223 224 @Override 225 public boolean deleteDatabase(String name) { 226 return mBase.deleteDatabase(name); 227 } 228 229 @Override 230 public File getDatabasePath(String name) { 231 return mBase.getDatabasePath(name); 232 } 233 234 @Override 235 public String[] databaseList() { 236 return mBase.databaseList(); 237 } 238 239 @Override 240 public Drawable getWallpaper() { 241 return mBase.getWallpaper(); 242 } 243 244 @Override 245 public Drawable peekWallpaper() { 246 return mBase.peekWallpaper(); 247 } 248 249 @Override 250 public int getWallpaperDesiredMinimumWidth() { 251 return mBase.getWallpaperDesiredMinimumWidth(); 252 } 253 254 @Override 255 public int getWallpaperDesiredMinimumHeight() { 256 return mBase.getWallpaperDesiredMinimumHeight(); 257 } 258 259 @Override 260 public void setWallpaper(Bitmap bitmap) throws IOException { 261 mBase.setWallpaper(bitmap); 262 } 263 264 @Override 265 public void setWallpaper(InputStream data) throws IOException { 266 mBase.setWallpaper(data); 267 } 268 269 @Override 270 public void clearWallpaper() throws IOException { 271 mBase.clearWallpaper(); 272 } 273 274 @Override 275 public void startActivity(Intent intent) { 276 mBase.startActivity(intent); 277 } 278 279 /** @hide */ 280 @Override 281 public void startActivityAsUser(Intent intent, int userId) { 282 mBase.startActivityAsUser(intent, userId); 283 } 284 285 @Override 286 public void startActivity(Intent intent, Bundle options) { 287 mBase.startActivity(intent, options); 288 } 289 290 @Override 291 public void startActivities(Intent[] intents) { 292 mBase.startActivities(intents); 293 } 294 295 @Override 296 public void startActivities(Intent[] intents, Bundle options) { 297 mBase.startActivities(intents, options); 298 } 299 300 @Override 301 public void startIntentSender(IntentSender intent, 302 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 303 throws IntentSender.SendIntentException { 304 mBase.startIntentSender(intent, fillInIntent, flagsMask, 305 flagsValues, extraFlags); 306 } 307 308 @Override 309 public void startIntentSender(IntentSender intent, 310 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 311 Bundle options) throws IntentSender.SendIntentException { 312 mBase.startIntentSender(intent, fillInIntent, flagsMask, 313 flagsValues, extraFlags, options); 314 } 315 316 @Override 317 public void sendBroadcast(Intent intent) { 318 mBase.sendBroadcast(intent); 319 } 320 321 @Override 322 public void sendBroadcast(Intent intent, String receiverPermission) { 323 mBase.sendBroadcast(intent, receiverPermission); 324 } 325 326 @Override 327 public void sendOrderedBroadcast(Intent intent, 328 String receiverPermission) { 329 mBase.sendOrderedBroadcast(intent, receiverPermission); 330 } 331 332 @Override 333 public void sendOrderedBroadcast( 334 Intent intent, String receiverPermission, BroadcastReceiver resultReceiver, 335 Handler scheduler, int initialCode, String initialData, 336 Bundle initialExtras) { 337 mBase.sendOrderedBroadcast(intent, receiverPermission, 338 resultReceiver, scheduler, initialCode, 339 initialData, initialExtras); 340 } 341 342 @Override 343 public void sendBroadcastToUser(Intent intent, int userHandle) { 344 mBase.sendBroadcastToUser(intent, userHandle); 345 } 346 347 @Override 348 public void sendOrderedBroadcastToUser(Intent intent, int userHandle, 349 BroadcastReceiver resultReceiver, Handler scheduler, 350 int initialCode, String initialData, Bundle initialExtras) { 351 mBase.sendOrderedBroadcastToUser(intent, userHandle, resultReceiver, 352 scheduler, initialCode, initialData, initialExtras); 353 } 354 355 @Override 356 public void sendStickyBroadcast(Intent intent) { 357 mBase.sendStickyBroadcast(intent); 358 } 359 360 @Override 361 public void sendStickyOrderedBroadcast( 362 Intent intent, BroadcastReceiver resultReceiver, 363 Handler scheduler, int initialCode, String initialData, 364 Bundle initialExtras) { 365 mBase.sendStickyOrderedBroadcast(intent, 366 resultReceiver, scheduler, initialCode, 367 initialData, initialExtras); 368 } 369 370 @Override 371 public void removeStickyBroadcast(Intent intent) { 372 mBase.removeStickyBroadcast(intent); 373 } 374 375 @Override 376 public Intent registerReceiver( 377 BroadcastReceiver receiver, IntentFilter filter) { 378 return mBase.registerReceiver(receiver, filter); 379 } 380 381 @Override 382 public Intent registerReceiver( 383 BroadcastReceiver receiver, IntentFilter filter, 384 String broadcastPermission, Handler scheduler) { 385 return mBase.registerReceiver(receiver, filter, broadcastPermission, 386 scheduler); 387 } 388 389 @Override 390 public void unregisterReceiver(BroadcastReceiver receiver) { 391 mBase.unregisterReceiver(receiver); 392 } 393 394 @Override 395 public ComponentName startService(Intent service) { 396 return mBase.startService(service); 397 } 398 399 @Override 400 public boolean stopService(Intent name) { 401 return mBase.stopService(name); 402 } 403 404 @Override 405 public boolean bindService(Intent service, ServiceConnection conn, 406 int flags) { 407 return mBase.bindService(service, conn, flags); 408 } 409 410 /** @hide */ 411 @Override 412 public boolean bindService(Intent service, ServiceConnection conn, int flags, int userHandle) { 413 return mBase.bindService(service, conn, flags, userHandle); 414 } 415 416 @Override 417 public void unbindService(ServiceConnection conn) { 418 mBase.unbindService(conn); 419 } 420 421 @Override 422 public boolean startInstrumentation(ComponentName className, 423 String profileFile, Bundle arguments) { 424 return mBase.startInstrumentation(className, profileFile, arguments); 425 } 426 427 @Override 428 public Object getSystemService(String name) { 429 return mBase.getSystemService(name); 430 } 431 432 @Override 433 public int checkPermission(String permission, int pid, int uid) { 434 return mBase.checkPermission(permission, pid, uid); 435 } 436 437 @Override 438 public int checkCallingPermission(String permission) { 439 return mBase.checkCallingPermission(permission); 440 } 441 442 @Override 443 public int checkCallingOrSelfPermission(String permission) { 444 return mBase.checkCallingOrSelfPermission(permission); 445 } 446 447 @Override 448 public void enforcePermission( 449 String permission, int pid, int uid, String message) { 450 mBase.enforcePermission(permission, pid, uid, message); 451 } 452 453 @Override 454 public void enforceCallingPermission(String permission, String message) { 455 mBase.enforceCallingPermission(permission, message); 456 } 457 458 @Override 459 public void enforceCallingOrSelfPermission( 460 String permission, String message) { 461 mBase.enforceCallingOrSelfPermission(permission, message); 462 } 463 464 @Override 465 public void grantUriPermission(String toPackage, Uri uri, int modeFlags) { 466 mBase.grantUriPermission(toPackage, uri, modeFlags); 467 } 468 469 @Override 470 public void revokeUriPermission(Uri uri, int modeFlags) { 471 mBase.revokeUriPermission(uri, modeFlags); 472 } 473 474 @Override 475 public int checkUriPermission(Uri uri, int pid, int uid, int modeFlags) { 476 return mBase.checkUriPermission(uri, pid, uid, modeFlags); 477 } 478 479 @Override 480 public int checkCallingUriPermission(Uri uri, int modeFlags) { 481 return mBase.checkCallingUriPermission(uri, modeFlags); 482 } 483 484 @Override 485 public int checkCallingOrSelfUriPermission(Uri uri, int modeFlags) { 486 return mBase.checkCallingOrSelfUriPermission(uri, modeFlags); 487 } 488 489 @Override 490 public int checkUriPermission(Uri uri, String readPermission, 491 String writePermission, int pid, int uid, int modeFlags) { 492 return mBase.checkUriPermission(uri, readPermission, writePermission, 493 pid, uid, modeFlags); 494 } 495 496 @Override 497 public void enforceUriPermission( 498 Uri uri, int pid, int uid, int modeFlags, String message) { 499 mBase.enforceUriPermission(uri, pid, uid, modeFlags, message); 500 } 501 502 @Override 503 public void enforceCallingUriPermission( 504 Uri uri, int modeFlags, String message) { 505 mBase.enforceCallingUriPermission(uri, modeFlags, message); 506 } 507 508 @Override 509 public void enforceCallingOrSelfUriPermission( 510 Uri uri, int modeFlags, String message) { 511 mBase.enforceCallingOrSelfUriPermission(uri, modeFlags, message); 512 } 513 514 @Override 515 public void enforceUriPermission( 516 Uri uri, String readPermission, String writePermission, 517 int pid, int uid, int modeFlags, String message) { 518 mBase.enforceUriPermission( 519 uri, readPermission, writePermission, pid, uid, modeFlags, 520 message); 521 } 522 523 @Override 524 public Context createPackageContext(String packageName, int flags) 525 throws PackageManager.NameNotFoundException { 526 return mBase.createPackageContext(packageName, flags); 527 } 528 529 @Override 530 public boolean isRestricted() { 531 return mBase.isRestricted(); 532 } 533} 534