ContextWrapper.java revision 98365d7663cbd82979a5700faf0050220b01084d
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.Configuration; 23import android.content.res.Resources; 24import android.database.DatabaseErrorHandler; 25import android.database.sqlite.SQLiteDatabase; 26import android.database.sqlite.SQLiteDatabase.CursorFactory; 27import android.graphics.Bitmap; 28import android.graphics.drawable.Drawable; 29import android.net.Uri; 30import android.os.Bundle; 31import android.os.Handler; 32import android.os.Looper; 33import android.os.UserHandle; 34import android.view.CompatibilityInfoHolder; 35 36import java.io.File; 37import java.io.FileInputStream; 38import java.io.FileNotFoundException; 39import java.io.FileOutputStream; 40import java.io.IOException; 41import java.io.InputStream; 42 43/** 44 * Proxying implementation of Context that simply delegates all of its calls to 45 * another Context. Can be subclassed to modify behavior without changing 46 * the original Context. 47 */ 48public class ContextWrapper extends Context { 49 Context mBase; 50 51 public ContextWrapper(Context base) { 52 mBase = base; 53 } 54 55 /** 56 * Set the base context for this ContextWrapper. All calls will then be 57 * delegated to the base context. Throws 58 * IllegalStateException if a base context has already been set. 59 * 60 * @param base The new base context for this wrapper. 61 */ 62 protected void attachBaseContext(Context base) { 63 if (mBase != null) { 64 throw new IllegalStateException("Base context already set"); 65 } 66 mBase = base; 67 } 68 69 /** 70 * @return the base context as set by the constructor or setBaseContext 71 */ 72 public Context getBaseContext() { 73 return mBase; 74 } 75 76 @Override 77 public AssetManager getAssets() { 78 return mBase.getAssets(); 79 } 80 81 @Override 82 public Resources getResources() 83 { 84 return mBase.getResources(); 85 } 86 87 @Override 88 public PackageManager getPackageManager() { 89 return mBase.getPackageManager(); 90 } 91 92 @Override 93 public ContentResolver getContentResolver() { 94 return mBase.getContentResolver(); 95 } 96 97 @Override 98 public Looper getMainLooper() { 99 return mBase.getMainLooper(); 100 } 101 102 @Override 103 public Context getApplicationContext() { 104 return mBase.getApplicationContext(); 105 } 106 107 @Override 108 public void setTheme(int resid) { 109 mBase.setTheme(resid); 110 } 111 112 /** @hide */ 113 @Override 114 public int getThemeResId() { 115 return mBase.getThemeResId(); 116 } 117 118 @Override 119 public Resources.Theme getTheme() { 120 return mBase.getTheme(); 121 } 122 123 @Override 124 public ClassLoader getClassLoader() { 125 return mBase.getClassLoader(); 126 } 127 128 @Override 129 public String getPackageName() { 130 return mBase.getPackageName(); 131 } 132 133 @Override 134 public ApplicationInfo getApplicationInfo() { 135 return mBase.getApplicationInfo(); 136 } 137 138 @Override 139 public String getPackageResourcePath() { 140 return mBase.getPackageResourcePath(); 141 } 142 143 @Override 144 public String getPackageCodePath() { 145 return mBase.getPackageCodePath(); 146 } 147 148 /** @hide */ 149 @Override 150 public File getSharedPrefsFile(String name) { 151 return mBase.getSharedPrefsFile(name); 152 } 153 154 @Override 155 public SharedPreferences getSharedPreferences(String name, int mode) { 156 return mBase.getSharedPreferences(name, mode); 157 } 158 159 @Override 160 public FileInputStream openFileInput(String name) 161 throws FileNotFoundException { 162 return mBase.openFileInput(name); 163 } 164 165 @Override 166 public FileOutputStream openFileOutput(String name, int mode) 167 throws FileNotFoundException { 168 return mBase.openFileOutput(name, mode); 169 } 170 171 @Override 172 public boolean deleteFile(String name) { 173 return mBase.deleteFile(name); 174 } 175 176 @Override 177 public File getFileStreamPath(String name) { 178 return mBase.getFileStreamPath(name); 179 } 180 181 @Override 182 public String[] fileList() { 183 return mBase.fileList(); 184 } 185 186 @Override 187 public File getFilesDir() { 188 return mBase.getFilesDir(); 189 } 190 191 @Override 192 public File getExternalFilesDir(String type) { 193 return mBase.getExternalFilesDir(type); 194 } 195 196 @Override 197 public File getObbDir() { 198 return mBase.getObbDir(); 199 } 200 201 @Override 202 public File getCacheDir() { 203 return mBase.getCacheDir(); 204 } 205 206 @Override 207 public File getExternalCacheDir() { 208 return mBase.getExternalCacheDir(); 209 } 210 211 @Override 212 public File getDir(String name, int mode) { 213 return mBase.getDir(name, mode); 214 } 215 216 @Override 217 public SQLiteDatabase openOrCreateDatabase(String name, int mode, CursorFactory factory) { 218 return mBase.openOrCreateDatabase(name, mode, factory); 219 } 220 221 @Override 222 public SQLiteDatabase openOrCreateDatabase(String name, int mode, CursorFactory factory, 223 DatabaseErrorHandler errorHandler) { 224 return mBase.openOrCreateDatabase(name, mode, factory, errorHandler); 225 } 226 227 @Override 228 public boolean deleteDatabase(String name) { 229 return mBase.deleteDatabase(name); 230 } 231 232 @Override 233 public File getDatabasePath(String name) { 234 return mBase.getDatabasePath(name); 235 } 236 237 @Override 238 public String[] databaseList() { 239 return mBase.databaseList(); 240 } 241 242 @Override 243 public Drawable getWallpaper() { 244 return mBase.getWallpaper(); 245 } 246 247 @Override 248 public Drawable peekWallpaper() { 249 return mBase.peekWallpaper(); 250 } 251 252 @Override 253 public int getWallpaperDesiredMinimumWidth() { 254 return mBase.getWallpaperDesiredMinimumWidth(); 255 } 256 257 @Override 258 public int getWallpaperDesiredMinimumHeight() { 259 return mBase.getWallpaperDesiredMinimumHeight(); 260 } 261 262 @Override 263 public void setWallpaper(Bitmap bitmap) throws IOException { 264 mBase.setWallpaper(bitmap); 265 } 266 267 @Override 268 public void setWallpaper(InputStream data) throws IOException { 269 mBase.setWallpaper(data); 270 } 271 272 @Override 273 public void clearWallpaper() throws IOException { 274 mBase.clearWallpaper(); 275 } 276 277 @Override 278 public void startActivity(Intent intent) { 279 mBase.startActivity(intent); 280 } 281 282 /** @hide */ 283 @Override 284 public void startActivityAsUser(Intent intent, UserHandle user) { 285 mBase.startActivityAsUser(intent, user); 286 } 287 288 @Override 289 public void startActivity(Intent intent, Bundle options) { 290 mBase.startActivity(intent, options); 291 } 292 293 /** @hide */ 294 @Override 295 public void startActivityAsUser(Intent intent, Bundle options, UserHandle user) { 296 mBase.startActivityAsUser(intent, options, user); 297 } 298 299 @Override 300 public void startActivities(Intent[] intents) { 301 mBase.startActivities(intents); 302 } 303 304 @Override 305 public void startActivities(Intent[] intents, Bundle options) { 306 mBase.startActivities(intents, options); 307 } 308 309 @Override 310 public void startIntentSender(IntentSender intent, 311 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 312 throws IntentSender.SendIntentException { 313 mBase.startIntentSender(intent, fillInIntent, flagsMask, 314 flagsValues, extraFlags); 315 } 316 317 @Override 318 public void startIntentSender(IntentSender intent, 319 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 320 Bundle options) throws IntentSender.SendIntentException { 321 mBase.startIntentSender(intent, fillInIntent, flagsMask, 322 flagsValues, extraFlags, options); 323 } 324 325 @Override 326 public void sendBroadcast(Intent intent) { 327 mBase.sendBroadcast(intent); 328 } 329 330 @Override 331 public void sendBroadcast(Intent intent, String receiverPermission) { 332 mBase.sendBroadcast(intent, receiverPermission); 333 } 334 335 @Override 336 public void sendOrderedBroadcast(Intent intent, 337 String receiverPermission) { 338 mBase.sendOrderedBroadcast(intent, receiverPermission); 339 } 340 341 @Override 342 public void sendOrderedBroadcast( 343 Intent intent, String receiverPermission, BroadcastReceiver resultReceiver, 344 Handler scheduler, int initialCode, String initialData, 345 Bundle initialExtras) { 346 mBase.sendOrderedBroadcast(intent, receiverPermission, 347 resultReceiver, scheduler, initialCode, 348 initialData, initialExtras); 349 } 350 351 @Override 352 public void sendBroadcastAsUser(Intent intent, UserHandle user) { 353 mBase.sendBroadcastAsUser(intent, user); 354 } 355 356 @Override 357 public void sendOrderedBroadcastAsUser(Intent intent, UserHandle user, 358 BroadcastReceiver resultReceiver, Handler scheduler, 359 int initialCode, String initialData, Bundle initialExtras) { 360 mBase.sendOrderedBroadcastAsUser(intent, user, resultReceiver, 361 scheduler, initialCode, initialData, initialExtras); 362 } 363 364 @Override 365 public void sendStickyBroadcast(Intent intent) { 366 mBase.sendStickyBroadcast(intent); 367 } 368 369 @Override 370 public void sendStickyOrderedBroadcast( 371 Intent intent, BroadcastReceiver resultReceiver, 372 Handler scheduler, int initialCode, String initialData, 373 Bundle initialExtras) { 374 mBase.sendStickyOrderedBroadcast(intent, 375 resultReceiver, scheduler, initialCode, 376 initialData, initialExtras); 377 } 378 379 @Override 380 public void removeStickyBroadcast(Intent intent) { 381 mBase.removeStickyBroadcast(intent); 382 } 383 384 @Override 385 public Intent registerReceiver( 386 BroadcastReceiver receiver, IntentFilter filter) { 387 return mBase.registerReceiver(receiver, filter); 388 } 389 390 @Override 391 public Intent registerReceiver( 392 BroadcastReceiver receiver, IntentFilter filter, 393 String broadcastPermission, Handler scheduler) { 394 return mBase.registerReceiver(receiver, filter, broadcastPermission, 395 scheduler); 396 } 397 398 @Override 399 public void unregisterReceiver(BroadcastReceiver receiver) { 400 mBase.unregisterReceiver(receiver); 401 } 402 403 @Override 404 public ComponentName startService(Intent service) { 405 return mBase.startService(service); 406 } 407 408 @Override 409 public boolean stopService(Intent name) { 410 return mBase.stopService(name); 411 } 412 413 @Override 414 public boolean bindService(Intent service, ServiceConnection conn, 415 int flags) { 416 return mBase.bindService(service, conn, flags); 417 } 418 419 /** @hide */ 420 @Override 421 public boolean bindService(Intent service, ServiceConnection conn, int flags, int userHandle) { 422 return mBase.bindService(service, conn, flags, userHandle); 423 } 424 425 @Override 426 public void unbindService(ServiceConnection conn) { 427 mBase.unbindService(conn); 428 } 429 430 @Override 431 public boolean startInstrumentation(ComponentName className, 432 String profileFile, Bundle arguments) { 433 return mBase.startInstrumentation(className, profileFile, arguments); 434 } 435 436 @Override 437 public Object getSystemService(String name) { 438 return mBase.getSystemService(name); 439 } 440 441 @Override 442 public int checkPermission(String permission, int pid, int uid) { 443 return mBase.checkPermission(permission, pid, uid); 444 } 445 446 @Override 447 public int checkCallingPermission(String permission) { 448 return mBase.checkCallingPermission(permission); 449 } 450 451 @Override 452 public int checkCallingOrSelfPermission(String permission) { 453 return mBase.checkCallingOrSelfPermission(permission); 454 } 455 456 @Override 457 public void enforcePermission( 458 String permission, int pid, int uid, String message) { 459 mBase.enforcePermission(permission, pid, uid, message); 460 } 461 462 @Override 463 public void enforceCallingPermission(String permission, String message) { 464 mBase.enforceCallingPermission(permission, message); 465 } 466 467 @Override 468 public void enforceCallingOrSelfPermission( 469 String permission, String message) { 470 mBase.enforceCallingOrSelfPermission(permission, message); 471 } 472 473 @Override 474 public void grantUriPermission(String toPackage, Uri uri, int modeFlags) { 475 mBase.grantUriPermission(toPackage, uri, modeFlags); 476 } 477 478 @Override 479 public void revokeUriPermission(Uri uri, int modeFlags) { 480 mBase.revokeUriPermission(uri, modeFlags); 481 } 482 483 @Override 484 public int checkUriPermission(Uri uri, int pid, int uid, int modeFlags) { 485 return mBase.checkUriPermission(uri, pid, uid, modeFlags); 486 } 487 488 @Override 489 public int checkCallingUriPermission(Uri uri, int modeFlags) { 490 return mBase.checkCallingUriPermission(uri, modeFlags); 491 } 492 493 @Override 494 public int checkCallingOrSelfUriPermission(Uri uri, int modeFlags) { 495 return mBase.checkCallingOrSelfUriPermission(uri, modeFlags); 496 } 497 498 @Override 499 public int checkUriPermission(Uri uri, String readPermission, 500 String writePermission, int pid, int uid, int modeFlags) { 501 return mBase.checkUriPermission(uri, readPermission, writePermission, 502 pid, uid, modeFlags); 503 } 504 505 @Override 506 public void enforceUriPermission( 507 Uri uri, int pid, int uid, int modeFlags, String message) { 508 mBase.enforceUriPermission(uri, pid, uid, modeFlags, message); 509 } 510 511 @Override 512 public void enforceCallingUriPermission( 513 Uri uri, int modeFlags, String message) { 514 mBase.enforceCallingUriPermission(uri, modeFlags, message); 515 } 516 517 @Override 518 public void enforceCallingOrSelfUriPermission( 519 Uri uri, int modeFlags, String message) { 520 mBase.enforceCallingOrSelfUriPermission(uri, modeFlags, message); 521 } 522 523 @Override 524 public void enforceUriPermission( 525 Uri uri, String readPermission, String writePermission, 526 int pid, int uid, int modeFlags, String message) { 527 mBase.enforceUriPermission( 528 uri, readPermission, writePermission, pid, uid, modeFlags, 529 message); 530 } 531 532 @Override 533 public Context createPackageContext(String packageName, int flags) 534 throws PackageManager.NameNotFoundException { 535 return mBase.createPackageContext(packageName, flags); 536 } 537 538 @Override 539 public Context createConfigurationContext(Configuration overrideConfiguration) { 540 return mBase.createConfigurationContext(overrideConfiguration); 541 } 542 543 @Override 544 public boolean isRestricted() { 545 return mBase.isRestricted(); 546 } 547 548 /** @hide */ 549 @Override 550 public CompatibilityInfoHolder getCompatibilityInfo() { 551 return mBase.getCompatibilityInfo(); 552 } 553} 554