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 @Override 280 public void startActivity(Intent intent, Bundle options) { 281 mBase.startActivity(intent, options); 282 } 283 284 @Override 285 public void startActivities(Intent[] intents) { 286 mBase.startActivities(intents); 287 } 288 289 @Override 290 public void startActivities(Intent[] intents, Bundle options) { 291 mBase.startActivities(intents, options); 292 } 293 294 @Override 295 public void startIntentSender(IntentSender intent, 296 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags) 297 throws IntentSender.SendIntentException { 298 mBase.startIntentSender(intent, fillInIntent, flagsMask, 299 flagsValues, extraFlags); 300 } 301 302 @Override 303 public void startIntentSender(IntentSender intent, 304 Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, 305 Bundle options) throws IntentSender.SendIntentException { 306 mBase.startIntentSender(intent, fillInIntent, flagsMask, 307 flagsValues, extraFlags, options); 308 } 309 310 @Override 311 public void sendBroadcast(Intent intent) { 312 mBase.sendBroadcast(intent); 313 } 314 315 /** @hide */ 316 @Override 317 public void sendBroadcast(Intent intent, int userId) { 318 mBase.sendBroadcast(intent, userId); 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 sendStickyBroadcast(Intent intent) { 344 mBase.sendStickyBroadcast(intent); 345 } 346 347 @Override 348 public void sendStickyOrderedBroadcast( 349 Intent intent, BroadcastReceiver resultReceiver, 350 Handler scheduler, int initialCode, String initialData, 351 Bundle initialExtras) { 352 mBase.sendStickyOrderedBroadcast(intent, 353 resultReceiver, scheduler, initialCode, 354 initialData, initialExtras); 355 } 356 357 @Override 358 public void removeStickyBroadcast(Intent intent) { 359 mBase.removeStickyBroadcast(intent); 360 } 361 362 @Override 363 public Intent registerReceiver( 364 BroadcastReceiver receiver, IntentFilter filter) { 365 return mBase.registerReceiver(receiver, filter); 366 } 367 368 @Override 369 public Intent registerReceiver( 370 BroadcastReceiver receiver, IntentFilter filter, 371 String broadcastPermission, Handler scheduler) { 372 return mBase.registerReceiver(receiver, filter, broadcastPermission, 373 scheduler); 374 } 375 376 @Override 377 public void unregisterReceiver(BroadcastReceiver receiver) { 378 mBase.unregisterReceiver(receiver); 379 } 380 381 @Override 382 public ComponentName startService(Intent service) { 383 return mBase.startService(service); 384 } 385 386 @Override 387 public boolean stopService(Intent name) { 388 return mBase.stopService(name); 389 } 390 391 @Override 392 public boolean bindService(Intent service, ServiceConnection conn, 393 int flags) { 394 return mBase.bindService(service, conn, flags); 395 } 396 397 /** @hide */ 398 @Override 399 public boolean bindService(Intent service, ServiceConnection conn, int flags, int userId) { 400 return mBase.bindService(service, conn, flags, userId); 401 } 402 403 @Override 404 public void unbindService(ServiceConnection conn) { 405 mBase.unbindService(conn); 406 } 407 408 @Override 409 public boolean startInstrumentation(ComponentName className, 410 String profileFile, Bundle arguments) { 411 return mBase.startInstrumentation(className, profileFile, arguments); 412 } 413 414 @Override 415 public Object getSystemService(String name) { 416 return mBase.getSystemService(name); 417 } 418 419 @Override 420 public int checkPermission(String permission, int pid, int uid) { 421 return mBase.checkPermission(permission, pid, uid); 422 } 423 424 @Override 425 public int checkCallingPermission(String permission) { 426 return mBase.checkCallingPermission(permission); 427 } 428 429 @Override 430 public int checkCallingOrSelfPermission(String permission) { 431 return mBase.checkCallingOrSelfPermission(permission); 432 } 433 434 @Override 435 public void enforcePermission( 436 String permission, int pid, int uid, String message) { 437 mBase.enforcePermission(permission, pid, uid, message); 438 } 439 440 @Override 441 public void enforceCallingPermission(String permission, String message) { 442 mBase.enforceCallingPermission(permission, message); 443 } 444 445 @Override 446 public void enforceCallingOrSelfPermission( 447 String permission, String message) { 448 mBase.enforceCallingOrSelfPermission(permission, message); 449 } 450 451 @Override 452 public void grantUriPermission(String toPackage, Uri uri, int modeFlags) { 453 mBase.grantUriPermission(toPackage, uri, modeFlags); 454 } 455 456 @Override 457 public void revokeUriPermission(Uri uri, int modeFlags) { 458 mBase.revokeUriPermission(uri, modeFlags); 459 } 460 461 @Override 462 public int checkUriPermission(Uri uri, int pid, int uid, int modeFlags) { 463 return mBase.checkUriPermission(uri, pid, uid, modeFlags); 464 } 465 466 @Override 467 public int checkCallingUriPermission(Uri uri, int modeFlags) { 468 return mBase.checkCallingUriPermission(uri, modeFlags); 469 } 470 471 @Override 472 public int checkCallingOrSelfUriPermission(Uri uri, int modeFlags) { 473 return mBase.checkCallingOrSelfUriPermission(uri, modeFlags); 474 } 475 476 @Override 477 public int checkUriPermission(Uri uri, String readPermission, 478 String writePermission, int pid, int uid, int modeFlags) { 479 return mBase.checkUriPermission(uri, readPermission, writePermission, 480 pid, uid, modeFlags); 481 } 482 483 @Override 484 public void enforceUriPermission( 485 Uri uri, int pid, int uid, int modeFlags, String message) { 486 mBase.enforceUriPermission(uri, pid, uid, modeFlags, message); 487 } 488 489 @Override 490 public void enforceCallingUriPermission( 491 Uri uri, int modeFlags, String message) { 492 mBase.enforceCallingUriPermission(uri, modeFlags, message); 493 } 494 495 @Override 496 public void enforceCallingOrSelfUriPermission( 497 Uri uri, int modeFlags, String message) { 498 mBase.enforceCallingOrSelfUriPermission(uri, modeFlags, message); 499 } 500 501 @Override 502 public void enforceUriPermission( 503 Uri uri, String readPermission, String writePermission, 504 int pid, int uid, int modeFlags, String message) { 505 mBase.enforceUriPermission( 506 uri, readPermission, writePermission, pid, uid, modeFlags, 507 message); 508 } 509 510 @Override 511 public Context createPackageContext(String packageName, int flags) 512 throws PackageManager.NameNotFoundException { 513 return mBase.createPackageContext(packageName, flags); 514 } 515 516 @Override 517 public boolean isRestricted() { 518 return mBase.isRestricted(); 519 } 520} 521