Kenny Root | 15a4d2f | 2010-03-11 18:20:12 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 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 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 17 | package com.android.internal.view; |
| 18 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 19 | import android.os.Bundle; |
| 20 | import android.os.RemoteException; |
| 21 | import android.os.SystemClock; |
| 22 | import android.util.Log; |
| 23 | import android.view.KeyEvent; |
| 24 | import android.view.inputmethod.CompletionInfo; |
Gilles Debunne | cf9cf2f | 2010-12-08 17:43:58 -0800 | [diff] [blame^] | 25 | import android.view.inputmethod.CorrectionInfo; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 26 | import android.view.inputmethod.ExtractedText; |
| 27 | import android.view.inputmethod.ExtractedTextRequest; |
| 28 | import android.view.inputmethod.InputConnection; |
| 29 | |
| 30 | public class InputConnectionWrapper implements InputConnection { |
| 31 | private static final int MAX_WAIT_TIME_MILLIS = 2000; |
| 32 | private final IInputContext mIInputContext; |
| 33 | |
| 34 | static class InputContextCallback extends IInputContextCallback.Stub { |
| 35 | private static final String TAG = "InputConnectionWrapper.ICC"; |
| 36 | public int mSeq; |
| 37 | public boolean mHaveValue; |
| 38 | public CharSequence mTextBeforeCursor; |
| 39 | public CharSequence mTextAfterCursor; |
Amith Yamasani | a90b7f0 | 2010-08-25 18:27:20 -0700 | [diff] [blame] | 40 | public CharSequence mSelectedText; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 41 | public ExtractedText mExtractedText; |
| 42 | public int mCursorCapsMode; |
| 43 | |
| 44 | // A 'pool' of one InputContextCallback. Each ICW request will attempt to gain |
| 45 | // exclusive access to this object. |
| 46 | private static InputContextCallback sInstance = new InputContextCallback(); |
| 47 | private static int sSequenceNumber = 1; |
| 48 | |
| 49 | /** |
| 50 | * Returns an InputContextCallback object that is guaranteed not to be in use by |
| 51 | * any other thread. The returned object's 'have value' flag is cleared and its expected |
| 52 | * sequence number is set to a new integer. We use a sequence number so that replies that |
| 53 | * occur after a timeout has expired are not interpreted as replies to a later request. |
| 54 | */ |
| 55 | private static InputContextCallback getInstance() { |
| 56 | synchronized (InputContextCallback.class) { |
| 57 | // Return sInstance if it's non-null, otherwise construct a new callback |
| 58 | InputContextCallback callback; |
| 59 | if (sInstance != null) { |
| 60 | callback = sInstance; |
| 61 | sInstance = null; |
| 62 | |
| 63 | // Reset the callback |
| 64 | callback.mHaveValue = false; |
| 65 | } else { |
| 66 | callback = new InputContextCallback(); |
| 67 | } |
| 68 | |
| 69 | // Set the sequence number |
| 70 | callback.mSeq = sSequenceNumber++; |
| 71 | return callback; |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Makes the given InputContextCallback available for use in the future. |
| 77 | */ |
| 78 | private void dispose() { |
| 79 | synchronized (InputContextCallback.class) { |
| 80 | // If sInstance is non-null, just let this object be garbage-collected |
| 81 | if (sInstance == null) { |
| 82 | // Allow any objects being held to be gc'ed |
| 83 | mTextAfterCursor = null; |
| 84 | mTextBeforeCursor = null; |
| 85 | mExtractedText = null; |
| 86 | sInstance = this; |
| 87 | } |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | public void setTextBeforeCursor(CharSequence textBeforeCursor, int seq) { |
| 92 | synchronized (this) { |
| 93 | if (seq == mSeq) { |
| 94 | mTextBeforeCursor = textBeforeCursor; |
| 95 | mHaveValue = true; |
| 96 | notifyAll(); |
| 97 | } else { |
| 98 | Log.i(TAG, "Got out-of-sequence callback " + seq + " (expected " + mSeq |
| 99 | + ") in setTextBeforeCursor, ignoring."); |
| 100 | } |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | public void setTextAfterCursor(CharSequence textAfterCursor, int seq) { |
| 105 | synchronized (this) { |
| 106 | if (seq == mSeq) { |
| 107 | mTextAfterCursor = textAfterCursor; |
| 108 | mHaveValue = true; |
| 109 | notifyAll(); |
| 110 | } else { |
| 111 | Log.i(TAG, "Got out-of-sequence callback " + seq + " (expected " + mSeq |
| 112 | + ") in setTextAfterCursor, ignoring."); |
| 113 | } |
| 114 | } |
| 115 | } |
| 116 | |
Amith Yamasani | a90b7f0 | 2010-08-25 18:27:20 -0700 | [diff] [blame] | 117 | public void setSelectedText(CharSequence selectedText, int seq) { |
| 118 | synchronized (this) { |
| 119 | if (seq == mSeq) { |
| 120 | mSelectedText = selectedText; |
| 121 | mHaveValue = true; |
| 122 | notifyAll(); |
| 123 | } else { |
| 124 | Log.i(TAG, "Got out-of-sequence callback " + seq + " (expected " + mSeq |
| 125 | + ") in setSelectedText, ignoring."); |
| 126 | } |
| 127 | } |
| 128 | } |
| 129 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 130 | public void setCursorCapsMode(int capsMode, int seq) { |
| 131 | synchronized (this) { |
| 132 | if (seq == mSeq) { |
| 133 | mCursorCapsMode = capsMode; |
| 134 | mHaveValue = true; |
| 135 | notifyAll(); |
| 136 | } else { |
| 137 | Log.i(TAG, "Got out-of-sequence callback " + seq + " (expected " + mSeq |
| 138 | + ") in setCursorCapsMode, ignoring."); |
| 139 | } |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | public void setExtractedText(ExtractedText extractedText, int seq) { |
| 144 | synchronized (this) { |
| 145 | if (seq == mSeq) { |
| 146 | mExtractedText = extractedText; |
| 147 | mHaveValue = true; |
| 148 | notifyAll(); |
| 149 | } else { |
| 150 | Log.i(TAG, "Got out-of-sequence callback " + seq + " (expected " + mSeq |
| 151 | + ") in setExtractedText, ignoring."); |
| 152 | } |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | /** |
| 157 | * Waits for a result for up to {@link #MAX_WAIT_TIME_MILLIS} milliseconds. |
| 158 | * |
| 159 | * <p>The caller must be synchronized on this callback object. |
| 160 | */ |
| 161 | void waitForResultLocked() { |
| 162 | long startTime = SystemClock.uptimeMillis(); |
| 163 | long endTime = startTime + MAX_WAIT_TIME_MILLIS; |
| 164 | |
| 165 | while (!mHaveValue) { |
| 166 | long remainingTime = endTime - SystemClock.uptimeMillis(); |
| 167 | if (remainingTime <= 0) { |
| 168 | Log.w(TAG, "Timed out waiting on IInputContextCallback"); |
| 169 | return; |
| 170 | } |
| 171 | try { |
| 172 | wait(remainingTime); |
| 173 | } catch (InterruptedException e) { |
| 174 | } |
| 175 | } |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | public InputConnectionWrapper(IInputContext inputContext) { |
| 180 | mIInputContext = inputContext; |
| 181 | } |
| 182 | |
| 183 | public CharSequence getTextAfterCursor(int length, int flags) { |
| 184 | CharSequence value = null; |
| 185 | try { |
| 186 | InputContextCallback callback = InputContextCallback.getInstance(); |
| 187 | mIInputContext.getTextAfterCursor(length, flags, callback.mSeq, callback); |
| 188 | synchronized (callback) { |
| 189 | callback.waitForResultLocked(); |
| 190 | if (callback.mHaveValue) { |
| 191 | value = callback.mTextAfterCursor; |
| 192 | } |
| 193 | } |
| 194 | callback.dispose(); |
| 195 | } catch (RemoteException e) { |
| 196 | return null; |
| 197 | } |
| 198 | return value; |
| 199 | } |
| 200 | |
| 201 | public CharSequence getTextBeforeCursor(int length, int flags) { |
| 202 | CharSequence value = null; |
| 203 | try { |
| 204 | InputContextCallback callback = InputContextCallback.getInstance(); |
| 205 | mIInputContext.getTextBeforeCursor(length, flags, callback.mSeq, callback); |
| 206 | synchronized (callback) { |
| 207 | callback.waitForResultLocked(); |
| 208 | if (callback.mHaveValue) { |
| 209 | value = callback.mTextBeforeCursor; |
| 210 | } |
| 211 | } |
| 212 | callback.dispose(); |
| 213 | } catch (RemoteException e) { |
| 214 | return null; |
| 215 | } |
| 216 | return value; |
| 217 | } |
| 218 | |
Amith Yamasani | a90b7f0 | 2010-08-25 18:27:20 -0700 | [diff] [blame] | 219 | public CharSequence getSelectedText(int flags) { |
| 220 | CharSequence value = null; |
| 221 | try { |
| 222 | InputContextCallback callback = InputContextCallback.getInstance(); |
| 223 | mIInputContext.getSelectedText(flags, callback.mSeq, callback); |
| 224 | synchronized (callback) { |
| 225 | callback.waitForResultLocked(); |
| 226 | if (callback.mHaveValue) { |
| 227 | value = callback.mSelectedText; |
| 228 | } |
| 229 | } |
| 230 | callback.dispose(); |
| 231 | } catch (RemoteException e) { |
| 232 | return null; |
| 233 | } |
| 234 | return value; |
| 235 | } |
| 236 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 237 | public int getCursorCapsMode(int reqModes) { |
| 238 | int value = 0; |
| 239 | try { |
| 240 | InputContextCallback callback = InputContextCallback.getInstance(); |
| 241 | mIInputContext.getCursorCapsMode(reqModes, callback.mSeq, callback); |
| 242 | synchronized (callback) { |
| 243 | callback.waitForResultLocked(); |
| 244 | if (callback.mHaveValue) { |
| 245 | value = callback.mCursorCapsMode; |
| 246 | } |
| 247 | } |
| 248 | callback.dispose(); |
| 249 | } catch (RemoteException e) { |
| 250 | return 0; |
| 251 | } |
| 252 | return value; |
| 253 | } |
| 254 | |
| 255 | public ExtractedText getExtractedText(ExtractedTextRequest request, int flags) { |
| 256 | ExtractedText value = null; |
| 257 | try { |
| 258 | InputContextCallback callback = InputContextCallback.getInstance(); |
| 259 | mIInputContext.getExtractedText(request, flags, callback.mSeq, callback); |
| 260 | synchronized (callback) { |
| 261 | callback.waitForResultLocked(); |
| 262 | if (callback.mHaveValue) { |
| 263 | value = callback.mExtractedText; |
| 264 | } |
| 265 | } |
| 266 | callback.dispose(); |
| 267 | } catch (RemoteException e) { |
| 268 | return null; |
| 269 | } |
| 270 | return value; |
| 271 | } |
| 272 | |
| 273 | public boolean commitText(CharSequence text, int newCursorPosition) { |
| 274 | try { |
| 275 | mIInputContext.commitText(text, newCursorPosition); |
| 276 | return true; |
| 277 | } catch (RemoteException e) { |
| 278 | return false; |
| 279 | } |
| 280 | } |
| 281 | |
| 282 | public boolean commitCompletion(CompletionInfo text) { |
| 283 | try { |
| 284 | mIInputContext.commitCompletion(text); |
| 285 | return true; |
| 286 | } catch (RemoteException e) { |
| 287 | return false; |
| 288 | } |
| 289 | } |
| 290 | |
Gilles Debunne | cf9cf2f | 2010-12-08 17:43:58 -0800 | [diff] [blame^] | 291 | public boolean commitCorrection(CorrectionInfo correctionInfo) { |
| 292 | try { |
| 293 | mIInputContext.commitCorrection(correctionInfo); |
| 294 | return true; |
| 295 | } catch (RemoteException e) { |
| 296 | return false; |
| 297 | } |
| 298 | } |
| 299 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 300 | public boolean setSelection(int start, int end) { |
| 301 | try { |
| 302 | mIInputContext.setSelection(start, end); |
| 303 | return true; |
| 304 | } catch (RemoteException e) { |
| 305 | return false; |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | public boolean performEditorAction(int actionCode) { |
| 310 | try { |
| 311 | mIInputContext.performEditorAction(actionCode); |
| 312 | return true; |
| 313 | } catch (RemoteException e) { |
| 314 | return false; |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | public boolean performContextMenuAction(int id) { |
| 319 | try { |
| 320 | mIInputContext.performContextMenuAction(id); |
| 321 | return true; |
| 322 | } catch (RemoteException e) { |
| 323 | return false; |
| 324 | } |
| 325 | } |
Amith Yamasani | a90b7f0 | 2010-08-25 18:27:20 -0700 | [diff] [blame] | 326 | |
| 327 | public boolean setComposingRegion(int start, int end) { |
| 328 | try { |
| 329 | mIInputContext.setComposingRegion(start, end); |
| 330 | return true; |
| 331 | } catch (RemoteException e) { |
| 332 | return false; |
| 333 | } |
| 334 | } |
| 335 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 336 | public boolean setComposingText(CharSequence text, int newCursorPosition) { |
| 337 | try { |
| 338 | mIInputContext.setComposingText(text, newCursorPosition); |
| 339 | return true; |
| 340 | } catch (RemoteException e) { |
| 341 | return false; |
| 342 | } |
| 343 | } |
| 344 | |
| 345 | public boolean finishComposingText() { |
| 346 | try { |
| 347 | mIInputContext.finishComposingText(); |
| 348 | return true; |
| 349 | } catch (RemoteException e) { |
| 350 | return false; |
| 351 | } |
| 352 | } |
| 353 | |
| 354 | public boolean beginBatchEdit() { |
| 355 | try { |
| 356 | mIInputContext.beginBatchEdit(); |
| 357 | return true; |
| 358 | } catch (RemoteException e) { |
| 359 | return false; |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | public boolean endBatchEdit() { |
| 364 | try { |
| 365 | mIInputContext.endBatchEdit(); |
| 366 | return true; |
| 367 | } catch (RemoteException e) { |
| 368 | return false; |
| 369 | } |
| 370 | } |
| 371 | |
| 372 | public boolean sendKeyEvent(KeyEvent event) { |
| 373 | try { |
| 374 | mIInputContext.sendKeyEvent(event); |
| 375 | return true; |
| 376 | } catch (RemoteException e) { |
| 377 | return false; |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | public boolean clearMetaKeyStates(int states) { |
| 382 | try { |
| 383 | mIInputContext.clearMetaKeyStates(states); |
| 384 | return true; |
| 385 | } catch (RemoteException e) { |
| 386 | return false; |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | public boolean deleteSurroundingText(int leftLength, int rightLength) { |
| 391 | try { |
| 392 | mIInputContext.deleteSurroundingText(leftLength, rightLength); |
| 393 | return true; |
| 394 | } catch (RemoteException e) { |
| 395 | return false; |
| 396 | } |
| 397 | } |
| 398 | |
| 399 | public boolean reportFullscreenMode(boolean enabled) { |
| 400 | try { |
| 401 | mIInputContext.reportFullscreenMode(enabled); |
| 402 | return true; |
| 403 | } catch (RemoteException e) { |
| 404 | return false; |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | public boolean performPrivateCommand(String action, Bundle data) { |
| 409 | try { |
| 410 | mIInputContext.performPrivateCommand(action, data); |
| 411 | return true; |
| 412 | } catch (RemoteException e) { |
| 413 | return false; |
| 414 | } |
| 415 | } |
| 416 | } |