ContextWrapper.java revision 6090995951c6e2e4dcf38102f01793f8a94166e1
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.DisplayAdjustments; 35import android.view.Display; 36 37import java.io.File; 38import java.io.FileInputStream; 39import java.io.FileNotFoundException; 40import java.io.FileOutputStream; 41import java.io.IOException; 42import java.io.InputStream; 43 44/** 45 * Proxying implementation of Context that simply delegates all of its calls to 46 * another Context. Can be subclassed to modify behavior without changing 47 * the original Context. 48 */ 49public class ContextWrapper extends Context { 50 Context mBase; 51 52 public ContextWrapper(Context base) { 53 mBase = base; 54 } 55 56 /** 57 * Set the base context for this ContextWrapper. All calls will then be 58 * delegated to the base context. Throws 59 * IllegalStateException if a base context has already been set. 60 * 61 * @param base The new base context for this wrapper. 62 */ 63 protected void attachBaseContext(Context base) { 64 if (mBase != null) { 65 throw new IllegalStateException("Base context already set"); 66 } 67 mBase = base; 68 } 69 70 /** 71 * @return the base context as set by the constructor or setBaseContext 72 */ 73 public Context getBaseContext() { 74 return mBase; 75 } 76 77 @Override 78 public AssetManager getAssets() { 79 return mBase.getAssets(); 80 } 81 82 @Override 83 public Resources getResources() 84 { 85 return mBase.getResources(); 86 } 87 88 @Override 89 public PackageManager getPackageManager() { 90 return mBase.getPackageManager(); 91 } 92 93 @Override 94 public ContentResolver getContentResolver() { 95 return mBase.getContentResolver(); 96 } 97 98 @Override 99 public Looper getMainLooper() { 100 return mBase.getMainLooper(); 101 } 102 103 @Override 104 public Context getApplicationContext() { 105 return mBase.getApplicationContext(); 106 } 107 108 @Override 109 public void setTheme(int resid) { 110 mBase.setTheme(resid); 111 } 112 113 /** @hide */ 114 @Override 115 public int getThemeResId() { 116 return mBase.getThemeResId(); 117 } 118 119 @Override 120 public Resources.Theme getTheme() { 121 return mBase.getTheme(); 122 } 123 124 @Override 125 public ClassLoader getClassLoader() { 126 return mBase.getClassLoader(); 127 } 128 129 @Override 130 public String getPackageName() { 131 return mBase.getPackageName(); 132 } 133 134 /** @hide */ 135 @Override 136 public String getBasePackageName() { 137 return mBase.getBasePackageName(); 138 } 139 140 /** @hide */ 141 @Override 142 public String getOpPackageName() { 143 return mBase.getOpPackageName(); 144 } 145 146 @Override 147 public ApplicationInfo getApplicationInfo() { 148 return mBase.getApplicationInfo(); 149 } 150 151 @Override 152 public String getPackageResourcePath() { 153 return mBase.getPackageResourcePath(); 154 } 155 156 @Override 157 public String getPackageCodePath() { 158 return mBase.getPackageCodePath(); 159 } 160 161 /** @hide */ 162 @Override 163 public File getSharedPrefsFile(String name) { 164 return mBase.getSharedPrefsFile(name); 165 } 166 167 @Override 168 public SharedPreferences getSharedPreferences(String name, int mode) { 169 return mBase.getSharedPreferences(name, mode); 170 } 171 172 @Override 173 public FileInputStream openFileInput(String name) 174 throws FileNotFoundException { 175 return mBase.openFileInput(name); 176 } 177 178 @Override 179 public FileOutputStream openFileOutput(String name, int mode) 180 throws FileNotFoundException { 181 return mBase.openFileOutput(name, mode); 182 } 183 184 @Override 185 public boolean deleteFile(String name) { 186 return mBase.deleteFile(name); 187 } 188 189 @Override 190 public File getFileStreamPath(String name) { 191 return mBase.getFileStreamPath(name); 192 } 193 194 @Override 195 public String[] fileList() { 196 return mBase.fileList(); 197 } 198 199 @Override 200 public File getFilesDir() { 201 return mBase.getFilesDir(); 202 } 203 204 @Override 205 public File getExternalFilesDir(String type) { 206 return mBase.getExternalFilesDir(type); 207 } 208 209 @Override 210 public File[] getExternalFilesDirs(String type) { 211 return mBase.getExternalFilesDirs(type); 212 } 213 214 @Override 215 public File getObbDir() { 216 return mBase.getObbDir(); 217 } 218 219 @Override 220 public File[] getObbDirs() { 221 return mBase.getObbDirs(); 222 } 223 224 @Override 225 public File getCacheDir() { 226 return mBase.getCacheDir(); 227 } 228 229 @Override 230 public File getExternalCacheDir() { 231 return mBase.getExternalCacheDir(); 232 } 233 234 @Override 235 public File[] getExternalCacheDirs() { 236 return mBase.getExternalCacheDirs(); 237 } 238 239 @Override 240 public File getDir(String name, int mode) { 241 return mBase.getDir(name, mode); 242 } 243 244 @Override 245 public SQLiteDatabase openOrCreateDatabase(String name, int mode, CursorFactory factory) { 246 return mBase.openOrCreateDatabase(name, mode, factory); 247 } 248 249 @Override 250 public SQLiteDatabase openOrCreateDatabase(String name, int mode, CursorFactory factory, 251 DatabaseErrorHandler errorHandler) { 252 return mBase.openOrCreateDatabase(name, mode, factory, errorHandler); 253 } 254 255 @Override 256 public boolean deleteDatabase(String name) { 257 return mBase.deleteDatabase(name); 258 } 259 260 @Override 261 public File getDatabasePath(String name) { 262 return mBase.getDatabasePath(name); 263 } 264 265 @Override 266 public String[] databaseList() { 267 return mBase.databaseList(); 268 } 269 270 @Override 271 public Drawable getWallpaper() { 272 return mBase.getWallpaper(); 273 } 274 275 @Override 276 public Drawable peekWallpaper() { 277 return mBase.peekWallpaper(); 278 } 279 280 @Override 281 public int getWallpaperDesiredMinimumWidth() { 282 return mBase.getWallpaperDesiredMinimumWidth(); 283 } 284 285 @Override 286 public int getWallpaperDesiredMinimumHeight() { 287 return mBase.getWallpaperDesiredMinimumHeight(); 288 } 289 290 @Override 291 public void setWallpaper(Bitmap bitmap) throws IOException { 292 mBase.setWallpaper(bitmap); 293 } 294 295 @Override 296 public void setWallpaper(InputStream data) throws IOException { 297 mBase.setWallpaper(data); 298 } 299 300 @Override 301 public void clearWallpaper() throws IOException { 302 mBase.clearWallpaper(); 303 } 304 305 @Override 306 public void startActivity(Intent intent) { 307 mBase.startActivity(intent); 308 } 309 310 /** @hide */ 311 @Override 312 public void startActivityAsUser(Intent intent, UserHandle user) { 313 mBase.startActivityAsUser(intent, user); 314 } 315 316 @Override 317 public void startActivity(Intent intent, Bundle options) { 318 mBase.startActivity(intent, options); 319 } 320 321 /** @hide */ 322 @Override 323 public void startActivityAsUser(Intent intent, Bundle options, UserHandle user) { 324 mBase.startActivityAsUser(intent, options, user); 325 } 326 327 @Override 328 public void startActivities(Intent[] intents) { 329 mBase.startActivities(intents); 330 } 331 332 @Override 333 public void startActivities(Intent[] intents, Bundle options) { 334 mBase.startActivities(intents, options); 335 } 336 337 /** @hide */ 338 @Override 339 public void startActivitiesAsUser(Intent[] intents, Bundle options, UserHandle userHandle) { 340 mBase.startActivitiesAsUser(intents, options, userHandle); 341 } 342 343 @Override 344 public void startIntentSender(IntentSender intent, 345 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 346 throws IntentSender.SendIntentException { 347 mBase.startIntentSender(intent, fillInIntent, flagsMask, 348 flagsValues, extraFlags); 349 } 350 351 @Override 352 public void startIntentSender(IntentSender intent, 353 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 354 Bundle options) throws IntentSender.SendIntentException { 355 mBase.startIntentSender(intent, fillInIntent, flagsMask, 356 flagsValues, extraFlags, options); 357 } 358 359 @Override 360 public void sendBroadcast(Intent intent) { 361 mBase.sendBroadcast(intent); 362 } 363 364 @Override 365 public void sendBroadcast(Intent intent, String receiverPermission) { 366 mBase.sendBroadcast(intent, receiverPermission); 367 } 368 369 /** @hide */ 370 @Override 371 public void sendBroadcast(Intent intent, String receiverPermission, int appOp) { 372 mBase.sendBroadcast(intent, receiverPermission, appOp); 373 } 374 375 @Override 376 public void sendOrderedBroadcast(Intent intent, 377 String receiverPermission) { 378 mBase.sendOrderedBroadcast(intent, receiverPermission); 379 } 380 381 @Override 382 public void sendOrderedBroadcast( 383 Intent intent, String receiverPermission, BroadcastReceiver resultReceiver, 384 Handler scheduler, int initialCode, String initialData, 385 Bundle initialExtras) { 386 mBase.sendOrderedBroadcast(intent, receiverPermission, 387 resultReceiver, scheduler, initialCode, 388 initialData, initialExtras); 389 } 390 391 /** @hide */ 392 @Override 393 public void sendOrderedBroadcast( 394 Intent intent, String receiverPermission, int appOp, BroadcastReceiver resultReceiver, 395 Handler scheduler, int initialCode, String initialData, 396 Bundle initialExtras) { 397 mBase.sendOrderedBroadcast(intent, receiverPermission, appOp, 398 resultReceiver, scheduler, initialCode, 399 initialData, initialExtras); 400 } 401 402 @Override 403 public void sendBroadcastAsUser(Intent intent, UserHandle user) { 404 mBase.sendBroadcastAsUser(intent, user); 405 } 406 407 @Override 408 public void sendBroadcastAsUser(Intent intent, UserHandle user, 409 String receiverPermission) { 410 mBase.sendBroadcastAsUser(intent, user, receiverPermission); 411 } 412 413 @Override 414 public void sendOrderedBroadcastAsUser(Intent intent, UserHandle user, 415 String receiverPermission, BroadcastReceiver resultReceiver, Handler scheduler, 416 int initialCode, String initialData, Bundle initialExtras) { 417 mBase.sendOrderedBroadcastAsUser(intent, user, receiverPermission, resultReceiver, 418 scheduler, initialCode, initialData, initialExtras); 419 } 420 421 @Override 422 public void sendStickyBroadcast(Intent intent) { 423 mBase.sendStickyBroadcast(intent); 424 } 425 426 @Override 427 public void sendStickyOrderedBroadcast( 428 Intent intent, BroadcastReceiver resultReceiver, 429 Handler scheduler, int initialCode, String initialData, 430 Bundle initialExtras) { 431 mBase.sendStickyOrderedBroadcast(intent, 432 resultReceiver, scheduler, initialCode, 433 initialData, initialExtras); 434 } 435 436 @Override 437 public void removeStickyBroadcast(Intent intent) { 438 mBase.removeStickyBroadcast(intent); 439 } 440 441 @Override 442 public void sendStickyBroadcastAsUser(Intent intent, UserHandle user) { 443 mBase.sendStickyBroadcastAsUser(intent, user); 444 } 445 446 @Override 447 public void sendStickyOrderedBroadcastAsUser(Intent intent, 448 UserHandle user, BroadcastReceiver resultReceiver, 449 Handler scheduler, int initialCode, String initialData, 450 Bundle initialExtras) { 451 mBase.sendStickyOrderedBroadcastAsUser(intent, user, resultReceiver, 452 scheduler, initialCode, initialData, initialExtras); 453 } 454 455 @Override 456 public void removeStickyBroadcastAsUser(Intent intent, UserHandle user) { 457 mBase.removeStickyBroadcastAsUser(intent, user); 458 } 459 460 @Override 461 public Intent registerReceiver( 462 BroadcastReceiver receiver, IntentFilter filter) { 463 return mBase.registerReceiver(receiver, filter); 464 } 465 466 @Override 467 public Intent registerReceiver( 468 BroadcastReceiver receiver, IntentFilter filter, 469 String broadcastPermission, Handler scheduler) { 470 return mBase.registerReceiver(receiver, filter, broadcastPermission, 471 scheduler); 472 } 473 474 /** @hide */ 475 @Override 476 public Intent registerReceiverAsUser( 477 BroadcastReceiver receiver, UserHandle user, IntentFilter filter, 478 String broadcastPermission, Handler scheduler) { 479 return mBase.registerReceiverAsUser(receiver, user, filter, broadcastPermission, 480 scheduler); 481 } 482 483 @Override 484 public void unregisterReceiver(BroadcastReceiver receiver) { 485 mBase.unregisterReceiver(receiver); 486 } 487 488 @Override 489 public ComponentName startService(Intent service) { 490 return mBase.startService(service); 491 } 492 493 @Override 494 public boolean stopService(Intent name) { 495 return mBase.stopService(name); 496 } 497 498 /** @hide */ 499 @Override 500 public ComponentName startServiceAsUser(Intent service, UserHandle user) { 501 return mBase.startServiceAsUser(service, user); 502 } 503 504 /** @hide */ 505 @Override 506 public boolean stopServiceAsUser(Intent name, UserHandle user) { 507 return mBase.stopServiceAsUser(name, user); 508 } 509 510 @Override 511 public boolean bindService(Intent service, ServiceConnection conn, 512 int flags) { 513 return mBase.bindService(service, conn, flags); 514 } 515 516 /** @hide */ 517 @Override 518 public boolean bindServiceAsUser(Intent service, ServiceConnection conn, int flags, 519 UserHandle user) { 520 return mBase.bindServiceAsUser(service, conn, flags, user); 521 } 522 523 @Override 524 public void unbindService(ServiceConnection conn) { 525 mBase.unbindService(conn); 526 } 527 528 @Override 529 public boolean startInstrumentation(ComponentName className, 530 String profileFile, Bundle arguments) { 531 return mBase.startInstrumentation(className, profileFile, arguments); 532 } 533 534 @Override 535 public Object getSystemService(String name) { 536 return mBase.getSystemService(name); 537 } 538 539 @Override 540 public int checkPermission(String permission, int pid, int uid) { 541 return mBase.checkPermission(permission, pid, uid); 542 } 543 544 @Override 545 public int checkCallingPermission(String permission) { 546 return mBase.checkCallingPermission(permission); 547 } 548 549 @Override 550 public int checkCallingOrSelfPermission(String permission) { 551 return mBase.checkCallingOrSelfPermission(permission); 552 } 553 554 @Override 555 public void enforcePermission( 556 String permission, int pid, int uid, String message) { 557 mBase.enforcePermission(permission, pid, uid, message); 558 } 559 560 @Override 561 public void enforceCallingPermission(String permission, String message) { 562 mBase.enforceCallingPermission(permission, message); 563 } 564 565 @Override 566 public void enforceCallingOrSelfPermission( 567 String permission, String message) { 568 mBase.enforceCallingOrSelfPermission(permission, message); 569 } 570 571 @Override 572 public void grantUriPermission(String toPackage, Uri uri, int modeFlags) { 573 mBase.grantUriPermission(toPackage, uri, modeFlags); 574 } 575 576 @Override 577 public void revokeUriPermission(Uri uri, int modeFlags) { 578 mBase.revokeUriPermission(uri, modeFlags); 579 } 580 581 @Override 582 public int checkUriPermission(Uri uri, int pid, int uid, int modeFlags) { 583 return mBase.checkUriPermission(uri, pid, uid, modeFlags); 584 } 585 586 @Override 587 public int checkCallingUriPermission(Uri uri, int modeFlags) { 588 return mBase.checkCallingUriPermission(uri, modeFlags); 589 } 590 591 @Override 592 public int checkCallingOrSelfUriPermission(Uri uri, int modeFlags) { 593 return mBase.checkCallingOrSelfUriPermission(uri, modeFlags); 594 } 595 596 @Override 597 public int checkUriPermission(Uri uri, String readPermission, 598 String writePermission, int pid, int uid, int modeFlags) { 599 return mBase.checkUriPermission(uri, readPermission, writePermission, 600 pid, uid, modeFlags); 601 } 602 603 @Override 604 public void enforceUriPermission( 605 Uri uri, int pid, int uid, int modeFlags, String message) { 606 mBase.enforceUriPermission(uri, pid, uid, modeFlags, message); 607 } 608 609 @Override 610 public void enforceCallingUriPermission( 611 Uri uri, int modeFlags, String message) { 612 mBase.enforceCallingUriPermission(uri, modeFlags, message); 613 } 614 615 @Override 616 public void enforceCallingOrSelfUriPermission( 617 Uri uri, int modeFlags, String message) { 618 mBase.enforceCallingOrSelfUriPermission(uri, modeFlags, message); 619 } 620 621 @Override 622 public void enforceUriPermission( 623 Uri uri, String readPermission, String writePermission, 624 int pid, int uid, int modeFlags, String message) { 625 mBase.enforceUriPermission( 626 uri, readPermission, writePermission, pid, uid, modeFlags, 627 message); 628 } 629 630 @Override 631 public Context createPackageContext(String packageName, int flags) 632 throws PackageManager.NameNotFoundException { 633 return mBase.createPackageContext(packageName, flags); 634 } 635 636 /** @hide */ 637 @Override 638 public Context createPackageContextAsUser(String packageName, int flags, UserHandle user) 639 throws PackageManager.NameNotFoundException { 640 return mBase.createPackageContextAsUser(packageName, flags, user); 641 } 642 643 /** @hide */ 644 @Override 645 public int getUserId() { 646 return mBase.getUserId(); 647 } 648 649 @Override 650 public Context createConfigurationContext(Configuration overrideConfiguration) { 651 return mBase.createConfigurationContext(overrideConfiguration); 652 } 653 654 @Override 655 public Context createDisplayContext(Display display) { 656 return mBase.createDisplayContext(display); 657 } 658 659 @Override 660 public boolean isRestricted() { 661 return mBase.isRestricted(); 662 } 663 664 /** @hide */ 665 @Override 666 public DisplayAdjustments getDisplayAdjustments(int displayId) { 667 return mBase.getDisplayAdjustments(displayId); 668 } 669} 670