ContextWrapper.java revision 9066cfe9886ac131c34d59ed0e2d287b0e3c0087
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.PackageManager; 20import android.content.res.AssetManager; 21import android.content.res.Resources; 22import android.database.sqlite.SQLiteDatabase; 23import android.database.sqlite.SQLiteDatabase.CursorFactory; 24import android.graphics.Bitmap; 25import android.graphics.drawable.Drawable; 26import android.net.Uri; 27import android.os.Bundle; 28import android.os.Handler; 29import android.os.Looper; 30 31import java.io.File; 32import java.io.FileInputStream; 33import java.io.FileNotFoundException; 34import java.io.FileOutputStream; 35import java.io.IOException; 36import java.io.InputStream; 37 38/** 39 * Proxying implementation of Context that simply delegates all of its calls to 40 * another Context. Can be subclassed to modify behavior without changing 41 * the original Context. 42 */ 43public class ContextWrapper extends Context { 44 Context mBase; 45 46 public ContextWrapper(Context base) { 47 mBase = base; 48 } 49 50 /** 51 * Set the base context for this ContextWrapper. All calls will then be 52 * delegated to the base context. Throws 53 * IllegalStateException if a base context has already been set. 54 * 55 * @param base The new base context for this wrapper. 56 */ 57 protected void attachBaseContext(Context base) { 58 if (mBase != null) { 59 throw new IllegalStateException("Base context already set"); 60 } 61 mBase = base; 62 } 63 64 /** 65 * @return the base context as set by the constructor or setBaseContext 66 */ 67 public Context getBaseContext() { 68 return mBase; 69 } 70 71 @Override 72 public AssetManager getAssets() { 73 return mBase.getAssets(); 74 } 75 76 @Override 77 public Resources getResources() 78 { 79 return mBase.getResources(); 80 } 81 82 @Override 83 public PackageManager getPackageManager() { 84 return mBase.getPackageManager(); 85 } 86 87 @Override 88 public ContentResolver getContentResolver() { 89 return mBase.getContentResolver(); 90 } 91 92 @Override 93 public Looper getMainLooper() { 94 return mBase.getMainLooper(); 95 } 96 97 @Override 98 public Context getApplicationContext() { 99 return mBase.getApplicationContext(); 100 } 101 102 @Override 103 public void setTheme(int resid) { 104 mBase.setTheme(resid); 105 } 106 107 @Override 108 public Resources.Theme getTheme() { 109 return mBase.getTheme(); 110 } 111 112 @Override 113 public ClassLoader getClassLoader() { 114 return mBase.getClassLoader(); 115 } 116 117 @Override 118 public String getPackageName() { 119 return mBase.getPackageName(); 120 } 121 122 @Override 123 public String getPackageResourcePath() { 124 return mBase.getPackageResourcePath(); 125 } 126 127 @Override 128 public String getPackageCodePath() { 129 return mBase.getPackageCodePath(); 130 } 131 132 @Override 133 public SharedPreferences getSharedPreferences(String name, int mode) { 134 return mBase.getSharedPreferences(name, mode); 135 } 136 137 @Override 138 public FileInputStream openFileInput(String name) 139 throws FileNotFoundException { 140 return mBase.openFileInput(name); 141 } 142 143 @Override 144 public FileOutputStream openFileOutput(String name, int mode) 145 throws FileNotFoundException { 146 return mBase.openFileOutput(name, mode); 147 } 148 149 @Override 150 public boolean deleteFile(String name) { 151 return mBase.deleteFile(name); 152 } 153 154 @Override 155 public File getFileStreamPath(String name) { 156 return mBase.getFileStreamPath(name); 157 } 158 159 @Override 160 public String[] fileList() { 161 return mBase.fileList(); 162 } 163 164 @Override 165 public File getFilesDir() { 166 return mBase.getFilesDir(); 167 } 168 169 @Override 170 public File getCacheDir() { 171 return mBase.getCacheDir(); 172 } 173 174 @Override 175 public File getDir(String name, int mode) { 176 return mBase.getDir(name, mode); 177 } 178 179 @Override 180 public SQLiteDatabase openOrCreateDatabase(String name, int mode, CursorFactory factory) { 181 return mBase.openOrCreateDatabase(name, mode, factory); 182 } 183 184 @Override 185 public boolean deleteDatabase(String name) { 186 return mBase.deleteDatabase(name); 187 } 188 189 @Override 190 public File getDatabasePath(String name) { 191 return mBase.getDatabasePath(name); 192 } 193 194 @Override 195 public String[] databaseList() { 196 return mBase.databaseList(); 197 } 198 199 @Override 200 public Drawable getWallpaper() { 201 return mBase.getWallpaper(); 202 } 203 204 @Override 205 public Drawable peekWallpaper() { 206 return mBase.peekWallpaper(); 207 } 208 209 @Override 210 public int getWallpaperDesiredMinimumWidth() { 211 return mBase.getWallpaperDesiredMinimumWidth(); 212 } 213 214 @Override 215 public int getWallpaperDesiredMinimumHeight() { 216 return mBase.getWallpaperDesiredMinimumHeight(); 217 } 218 219 @Override 220 public void setWallpaper(Bitmap bitmap) throws IOException { 221 mBase.setWallpaper(bitmap); 222 } 223 224 @Override 225 public void setWallpaper(InputStream data) throws IOException { 226 mBase.setWallpaper(data); 227 } 228 229 @Override 230 public void clearWallpaper() throws IOException { 231 mBase.clearWallpaper(); 232 } 233 234 @Override 235 public void startActivity(Intent intent) { 236 mBase.startActivity(intent); 237 } 238 239 @Override 240 public void sendBroadcast(Intent intent) { 241 mBase.sendBroadcast(intent); 242 } 243 244 @Override 245 public void sendBroadcast(Intent intent, String receiverPermission) { 246 mBase.sendBroadcast(intent, receiverPermission); 247 } 248 249 @Override 250 public void sendOrderedBroadcast(Intent intent, 251 String receiverPermission) { 252 mBase.sendOrderedBroadcast(intent, receiverPermission); 253 } 254 255 @Override 256 public void sendOrderedBroadcast( 257 Intent intent, String receiverPermission, BroadcastReceiver resultReceiver, 258 Handler scheduler, int initialCode, String initialData, 259 Bundle initialExtras) { 260 mBase.sendOrderedBroadcast(intent, receiverPermission, 261 resultReceiver, scheduler, initialCode, 262 initialData, initialExtras); 263 } 264 265 @Override 266 public void sendStickyBroadcast(Intent intent) { 267 mBase.sendStickyBroadcast(intent); 268 } 269 270 @Override 271 public void removeStickyBroadcast(Intent intent) { 272 mBase.removeStickyBroadcast(intent); 273 } 274 275 @Override 276 public Intent registerReceiver( 277 BroadcastReceiver receiver, IntentFilter filter) { 278 return mBase.registerReceiver(receiver, filter); 279 } 280 281 @Override 282 public Intent registerReceiver( 283 BroadcastReceiver receiver, IntentFilter filter, 284 String broadcastPermission, Handler scheduler) { 285 return mBase.registerReceiver(receiver, filter, broadcastPermission, 286 scheduler); 287 } 288 289 @Override 290 public void unregisterReceiver(BroadcastReceiver receiver) { 291 mBase.unregisterReceiver(receiver); 292 } 293 294 @Override 295 public ComponentName startService(Intent service) { 296 return mBase.startService(service); 297 } 298 299 @Override 300 public boolean stopService(Intent name) { 301 return mBase.stopService(name); 302 } 303 304 @Override 305 public boolean bindService(Intent service, ServiceConnection conn, 306 int flags) { 307 return mBase.bindService(service, conn, flags); 308 } 309 310 @Override 311 public void unbindService(ServiceConnection conn) { 312 mBase.unbindService(conn); 313 } 314 315 @Override 316 public boolean startInstrumentation(ComponentName className, 317 String profileFile, Bundle arguments) { 318 return mBase.startInstrumentation(className, profileFile, arguments); 319 } 320 321 @Override 322 public Object getSystemService(String name) { 323 return mBase.getSystemService(name); 324 } 325 326 @Override 327 public int checkPermission(String permission, int pid, int uid) { 328 return mBase.checkPermission(permission, pid, uid); 329 } 330 331 @Override 332 public int checkCallingPermission(String permission) { 333 return mBase.checkCallingPermission(permission); 334 } 335 336 @Override 337 public int checkCallingOrSelfPermission(String permission) { 338 return mBase.checkCallingOrSelfPermission(permission); 339 } 340 341 @Override 342 public void enforcePermission( 343 String permission, int pid, int uid, String message) { 344 mBase.enforcePermission(permission, pid, uid, message); 345 } 346 347 @Override 348 public void enforceCallingPermission(String permission, String message) { 349 mBase.enforceCallingPermission(permission, message); 350 } 351 352 @Override 353 public void enforceCallingOrSelfPermission( 354 String permission, String message) { 355 mBase.enforceCallingOrSelfPermission(permission, message); 356 } 357 358 @Override 359 public void grantUriPermission(String toPackage, Uri uri, int modeFlags) { 360 mBase.grantUriPermission(toPackage, uri, modeFlags); 361 } 362 363 @Override 364 public void revokeUriPermission(Uri uri, int modeFlags) { 365 mBase.revokeUriPermission(uri, modeFlags); 366 } 367 368 @Override 369 public int checkUriPermission(Uri uri, int pid, int uid, int modeFlags) { 370 return mBase.checkUriPermission(uri, pid, uid, modeFlags); 371 } 372 373 @Override 374 public int checkCallingUriPermission(Uri uri, int modeFlags) { 375 return mBase.checkCallingUriPermission(uri, modeFlags); 376 } 377 378 @Override 379 public int checkCallingOrSelfUriPermission(Uri uri, int modeFlags) { 380 return mBase.checkCallingOrSelfUriPermission(uri, modeFlags); 381 } 382 383 @Override 384 public int checkUriPermission(Uri uri, String readPermission, 385 String writePermission, int pid, int uid, int modeFlags) { 386 return mBase.checkUriPermission(uri, readPermission, writePermission, 387 pid, uid, modeFlags); 388 } 389 390 @Override 391 public void enforceUriPermission( 392 Uri uri, int pid, int uid, int modeFlags, String message) { 393 mBase.enforceUriPermission(uri, pid, uid, modeFlags, message); 394 } 395 396 @Override 397 public void enforceCallingUriPermission( 398 Uri uri, int modeFlags, String message) { 399 mBase.enforceCallingUriPermission(uri, modeFlags, message); 400 } 401 402 @Override 403 public void enforceCallingOrSelfUriPermission( 404 Uri uri, int modeFlags, String message) { 405 mBase.enforceCallingOrSelfUriPermission(uri, modeFlags, message); 406 } 407 408 @Override 409 public void enforceUriPermission( 410 Uri uri, String readPermission, String writePermission, 411 int pid, int uid, int modeFlags, String message) { 412 mBase.enforceUriPermission( 413 uri, readPermission, writePermission, pid, uid, modeFlags, 414 message); 415 } 416 417 @Override 418 public Context createPackageContext(String packageName, int flags) 419 throws PackageManager.NameNotFoundException { 420 return mBase.createPackageContext(packageName, flags); 421 } 422} 423