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1 // Copyright 2012 The Chromium Authors. All rights reserved. | 1 // Copyright 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 package org.chromium.content.browser.input; | 5 package org.chromium.content.browser.input; |
6 | 6 |
7 import android.os.Handler; | 7 import android.os.Handler; |
8 import android.os.ResultReceiver; | 8 import android.os.ResultReceiver; |
9 import android.os.SystemClock; | 9 import android.os.SystemClock; |
10 import android.text.Editable; | 10 import android.text.Editable; |
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109 static int sTextInputTypeUrl; | 109 static int sTextInputTypeUrl; |
110 static int sTextInputTypeEmail; | 110 static int sTextInputTypeEmail; |
111 static int sTextInputTypeTel; | 111 static int sTextInputTypeTel; |
112 static int sTextInputTypeNumber; | 112 static int sTextInputTypeNumber; |
113 static int sTextInputTypeContentEditable; | 113 static int sTextInputTypeContentEditable; |
114 static int sModifierShift; | 114 static int sModifierShift; |
115 static int sModifierAlt; | 115 static int sModifierAlt; |
116 static int sModifierCtrl; | 116 static int sModifierCtrl; |
117 static int sModifierCapsLockOn; | 117 static int sModifierCapsLockOn; |
118 static int sModifierNumLockOn; | 118 static int sModifierNumLockOn; |
| 119 static char[] sSingleCharArray = new char[1]; |
| 120 static KeyCharacterMap sKeyCharacterMap; |
119 | 121 |
120 private long mNativeImeAdapterAndroid; | 122 private long mNativeImeAdapterAndroid; |
121 private InputMethodManagerWrapper mInputMethodManagerWrapper; | 123 private InputMethodManagerWrapper mInputMethodManagerWrapper; |
122 private AdapterInputConnection mInputConnection; | 124 private AdapterInputConnection mInputConnection; |
123 private final ImeAdapterDelegate mViewEmbedder; | 125 private final ImeAdapterDelegate mViewEmbedder; |
124 private final Handler mHandler; | 126 private final Handler mHandler; |
125 private DelayedDismissInput mDismissInput = null; | 127 private DelayedDismissInput mDismissInput = null; |
126 private int mTextInputType; | 128 private int mTextInputType; |
| 129 private String mLastComposeText; |
| 130 |
| 131 @VisibleForTesting |
| 132 int mLastSyntheticKeyCode; |
127 | 133 |
128 @VisibleForTesting | 134 @VisibleForTesting |
129 boolean mIsShowWithoutHideOutstanding = false; | 135 boolean mIsShowWithoutHideOutstanding = false; |
130 | 136 |
131 /** | 137 /** |
132 * @param wrapper InputMethodManagerWrapper that should receive all the call
directed to | 138 * @param wrapper InputMethodManagerWrapper that should receive all the call
directed to |
133 * InputMethodManager. | 139 * InputMethodManager. |
134 * @param embedder The view that is used for callbacks from ImeAdapter. | 140 * @param embedder The view that is used for callbacks from ImeAdapter. |
135 */ | 141 */ |
136 public ImeAdapter(InputMethodManagerWrapper wrapper, ImeAdapterDelegate embe
dder) { | 142 public ImeAdapter(InputMethodManagerWrapper wrapper, ImeAdapterDelegate embe
dder) { |
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310 } | 316 } |
311 | 317 |
312 private int shouldSendKeyEventWithKeyCode(String text) { | 318 private int shouldSendKeyEventWithKeyCode(String text) { |
313 if (text.length() != 1) return COMPOSITION_KEY_CODE; | 319 if (text.length() != 1) return COMPOSITION_KEY_CODE; |
314 | 320 |
315 if (text.equals("\n")) return KeyEvent.KEYCODE_ENTER; | 321 if (text.equals("\n")) return KeyEvent.KEYCODE_ENTER; |
316 else if (text.equals("\t")) return KeyEvent.KEYCODE_TAB; | 322 else if (text.equals("\t")) return KeyEvent.KEYCODE_TAB; |
317 else return COMPOSITION_KEY_CODE; | 323 else return COMPOSITION_KEY_CODE; |
318 } | 324 } |
319 | 325 |
| 326 /** |
| 327 * @return Android keycode for a single unicode character. |
| 328 */ |
| 329 private static int androidKeyCodeForCharacter(char chr) { |
| 330 if (sKeyCharacterMap == null) { |
| 331 sKeyCharacterMap = KeyCharacterMap.load(KeyCharacterMap.VIRTUAL_KEYB
OARD); |
| 332 } |
| 333 sSingleCharArray[0] = chr; |
| 334 // TODO: Evaluate cost of this system call. |
| 335 KeyEvent[] events = sKeyCharacterMap.getEvents(sSingleCharArray); |
| 336 if (events == null || events.length != 2) // One key-down event and one
key-up event. |
| 337 return KeyEvent.KEYCODE_UNKNOWN; |
| 338 return events[0].getKeyCode(); |
| 339 } |
| 340 |
| 341 @VisibleForTesting |
| 342 public static int getTypedKeycodeGuess(String oldtext, String newtext) { |
| 343 // Starting typing a new composition should add only a single character.
Any composition |
| 344 // beginning with text longer than that must come from something other t
han typing so |
| 345 // return 0. |
| 346 if (oldtext == null) { |
| 347 if (newtext.length() == 1) { |
| 348 return androidKeyCodeForCharacter(newtext.charAt(0)); |
| 349 } else { |
| 350 return 0; |
| 351 } |
| 352 } |
| 353 |
| 354 // The content has grown in length: assume the last character is the key
that caused it. |
| 355 if (newtext.length() > oldtext.length() && newtext.startsWith(oldtext)) |
| 356 return androidKeyCodeForCharacter(newtext.charAt(newtext.length() -
1)); |
| 357 |
| 358 // The content has shrunk in length: assume that backspace was pressed. |
| 359 if (oldtext.length() > newtext.length() && oldtext.startsWith(newtext)) |
| 360 return KeyEvent.KEYCODE_DEL; |
| 361 |
| 362 // The content is unchanged or has undergone a complex change (i.e. not
a simple tail |
| 363 // modification) so return an unknown key-code. |
| 364 return 0; |
| 365 } |
| 366 |
320 void sendKeyEventWithKeyCode(int keyCode, int flags) { | 367 void sendKeyEventWithKeyCode(int keyCode, int flags) { |
321 long eventTime = SystemClock.uptimeMillis(); | 368 long eventTime = SystemClock.uptimeMillis(); |
| 369 mLastSyntheticKeyCode = keyCode; |
322 translateAndSendNativeEvents(new KeyEvent(eventTime, eventTime, | 370 translateAndSendNativeEvents(new KeyEvent(eventTime, eventTime, |
323 KeyEvent.ACTION_DOWN, keyCode, 0, 0, | 371 KeyEvent.ACTION_DOWN, keyCode, 0, 0, |
324 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, | 372 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, |
325 flags)); | 373 flags)); |
326 translateAndSendNativeEvents(new KeyEvent(SystemClock.uptimeMillis(), ev
entTime, | 374 translateAndSendNativeEvents(new KeyEvent(SystemClock.uptimeMillis(), ev
entTime, |
327 KeyEvent.ACTION_UP, keyCode, 0, 0, | 375 KeyEvent.ACTION_UP, keyCode, 0, 0, |
328 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, | 376 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, |
329 flags)); | 377 flags)); |
330 } | 378 } |
331 | 379 |
332 // Calls from Java to C++ | 380 // Calls from Java to C++ |
| 381 // TODO: Add performance tracing to more complicated functions. |
333 | 382 |
334 boolean checkCompositionQueueAndCallNative(CharSequence text, int newCursorP
osition, | 383 boolean checkCompositionQueueAndCallNative(CharSequence text, int newCursorP
osition, |
335 boolean isCommit) { | 384 boolean isCommit) { |
336 if (mNativeImeAdapterAndroid == 0) return false; | 385 if (mNativeImeAdapterAndroid == 0) return false; |
337 String textStr = text.toString(); | 386 String textStr = text.toString(); |
338 | 387 |
339 // Committing an empty string finishes the current composition. | 388 // Committing an empty string finishes the current composition. |
340 boolean isFinish = textStr.isEmpty(); | 389 boolean isFinish = textStr.isEmpty(); |
341 mViewEmbedder.onImeEvent(isFinish); | 390 mViewEmbedder.onImeEvent(isFinish); |
342 int keyCode = shouldSendKeyEventWithKeyCode(textStr); | 391 int keyCode = shouldSendKeyEventWithKeyCode(textStr); |
343 long timeStampMs = SystemClock.uptimeMillis(); | 392 long timeStampMs = SystemClock.uptimeMillis(); |
344 | 393 |
345 if (keyCode != COMPOSITION_KEY_CODE) { | 394 if (keyCode != COMPOSITION_KEY_CODE) { |
346 sendKeyEventWithKeyCode(keyCode, | 395 sendKeyEventWithKeyCode(keyCode, |
347 KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE)
; | 396 KeyEvent.FLAG_SOFT_KEYBOARD | KeyEvent.FLAG_KEEP_TOUCH_MODE)
; |
348 } else { | 397 } else { |
| 398 keyCode = getTypedKeycodeGuess(mLastComposeText, textStr); |
| 399 mLastComposeText = textStr; |
| 400 mLastSyntheticKeyCode = keyCode; |
| 401 |
| 402 // When typing, there is no issue sending KeyDown and KeyUp events a
round the |
| 403 // composition event because those key events do nothing (other than
call JS |
| 404 // handlers). Typing does not cause changes outside of a KeyPress e
vent which |
| 405 // we don't call here. However, if the key-code is a control key su
ch as |
| 406 // KEYCODE_DEL then there never is an associated KeyPress event and
the KeyDown |
| 407 // event itself causes the action. The net result below is that the
Renderer calls |
| 408 // cancelComposition() and then Android starts anew with setComposin
gRegion(). |
| 409 // This stopping and restarting of composition could be a source of
problems |
| 410 // with 3rd party keyboards. |
| 411 // |
| 412 // An alternative is to *not* call nativeSetComposingText() in the n
on-commit case |
| 413 // below. This avoids the restart of composition described above bu
t fails to send |
| 414 // an update to the composition while in composition which, strictly
speaking, |
| 415 // does not match the spec. |
| 416 // |
| 417 // For now, the solution is to endure the restarting of composition
and only dive |
| 418 // into the alternate solution should there be problems in the field
. --bcwhite |
| 419 |
349 nativeSendSyntheticKeyEvent(mNativeImeAdapterAndroid, sEventTypeRawK
eyDown, | 420 nativeSendSyntheticKeyEvent(mNativeImeAdapterAndroid, sEventTypeRawK
eyDown, |
350 timeStampMs, keyCode, 0); | 421 timeStampMs, keyCode, 0); |
| 422 |
351 if (isCommit) { | 423 if (isCommit) { |
352 nativeCommitText(mNativeImeAdapterAndroid, textStr); | 424 nativeCommitText(mNativeImeAdapterAndroid, textStr); |
| 425 mLastComposeText = null; |
353 } else { | 426 } else { |
354 nativeSetComposingText(mNativeImeAdapterAndroid, text, textStr,
newCursorPosition); | 427 nativeSetComposingText(mNativeImeAdapterAndroid, text, textStr,
newCursorPosition); |
355 } | 428 } |
| 429 |
356 nativeSendSyntheticKeyEvent(mNativeImeAdapterAndroid, sEventTypeKeyU
p, | 430 nativeSendSyntheticKeyEvent(mNativeImeAdapterAndroid, sEventTypeKeyU
p, |
357 timeStampMs, keyCode, 0); | 431 timeStampMs, keyCode, 0); |
358 } | 432 } |
359 | 433 |
360 return true; | 434 return true; |
361 } | 435 } |
362 | 436 |
363 void finishComposingText() { | 437 void finishComposingText() { |
364 if (mNativeImeAdapterAndroid == 0) return; | 438 if (mNativeImeAdapterAndroid == 0) return; |
365 nativeFinishComposingText(mNativeImeAdapterAndroid); | 439 nativeFinishComposingText(mNativeImeAdapterAndroid); |
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418 * @param end Selection end index. | 492 * @param end Selection end index. |
419 * @return Whether the native counterpart of ImeAdapter received the call. | 493 * @return Whether the native counterpart of ImeAdapter received the call. |
420 */ | 494 */ |
421 boolean setEditableSelectionOffsets(int start, int end) { | 495 boolean setEditableSelectionOffsets(int start, int end) { |
422 if (mNativeImeAdapterAndroid == 0) return false; | 496 if (mNativeImeAdapterAndroid == 0) return false; |
423 nativeSetEditableSelectionOffsets(mNativeImeAdapterAndroid, start, end); | 497 nativeSetEditableSelectionOffsets(mNativeImeAdapterAndroid, start, end); |
424 return true; | 498 return true; |
425 } | 499 } |
426 | 500 |
427 /** | 501 /** |
428 * Send a request to the native counterpart to set compositing region to giv
en indices. | 502 * Send a request to the native counterpart to set composing region to given
indices. |
429 * @param start The start of the composition. | 503 * @param start The start of the composition. |
430 * @param end The end of the composition. | 504 * @param end The end of the composition. |
431 * @return Whether the native counterpart of ImeAdapter received the call. | 505 * @return Whether the native counterpart of ImeAdapter received the call. |
432 */ | 506 */ |
433 boolean setComposingRegion(int start, int end) { | 507 boolean setComposingRegion(CharSequence text, int start, int end) { |
434 if (mNativeImeAdapterAndroid == 0) return false; | 508 if (mNativeImeAdapterAndroid == 0) return false; |
435 nativeSetComposingRegion(mNativeImeAdapterAndroid, start, end); | 509 nativeSetComposingRegion(mNativeImeAdapterAndroid, start, end); |
| 510 mLastComposeText = text != null ? text.toString() : null; |
436 return true; | 511 return true; |
437 } | 512 } |
438 | 513 |
439 /** | 514 /** |
440 * Send a request to the native counterpart to unselect text. | 515 * Send a request to the native counterpart to unselect text. |
441 * @return Whether the native counterpart of ImeAdapter received the call. | 516 * @return Whether the native counterpart of ImeAdapter received the call. |
442 */ | 517 */ |
443 public boolean unselect() { | 518 public boolean unselect() { |
444 if (mNativeImeAdapterAndroid == 0) return false; | 519 if (mNativeImeAdapterAndroid == 0) return false; |
445 nativeUnselect(mNativeImeAdapterAndroid); | 520 nativeUnselect(mNativeImeAdapterAndroid); |
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539 } else if (span instanceof UnderlineSpan) { | 614 } else if (span instanceof UnderlineSpan) { |
540 nativeAppendUnderlineSpan(underlines, spannableString.getSpanSta
rt(span), | 615 nativeAppendUnderlineSpan(underlines, spannableString.getSpanSta
rt(span), |
541 spannableString.getSpanEnd(span)); | 616 spannableString.getSpanEnd(span)); |
542 } | 617 } |
543 } | 618 } |
544 } | 619 } |
545 | 620 |
546 @CalledByNative | 621 @CalledByNative |
547 private void cancelComposition() { | 622 private void cancelComposition() { |
548 if (mInputConnection != null) mInputConnection.restartInput(); | 623 if (mInputConnection != null) mInputConnection.restartInput(); |
| 624 mLastComposeText = null; |
549 } | 625 } |
550 | 626 |
551 @CalledByNative | 627 @CalledByNative |
552 void detach() { | 628 void detach() { |
553 if (mDismissInput != null) mHandler.removeCallbacks(mDismissInput); | 629 if (mDismissInput != null) mHandler.removeCallbacks(mDismissInput); |
554 mNativeImeAdapterAndroid = 0; | 630 mNativeImeAdapterAndroid = 0; |
555 mTextInputType = 0; | 631 mTextInputType = 0; |
556 } | 632 } |
557 | 633 |
558 private native boolean nativeSendSyntheticKeyEvent(long nativeImeAdapterAndr
oid, | 634 private native boolean nativeSendSyntheticKeyEvent(long nativeImeAdapterAndr
oid, |
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584 private native void nativeDeleteSurroundingText(long nativeImeAdapterAndroid
, | 660 private native void nativeDeleteSurroundingText(long nativeImeAdapterAndroid
, |
585 int before, int after); | 661 int before, int after); |
586 | 662 |
587 private native void nativeUnselect(long nativeImeAdapterAndroid); | 663 private native void nativeUnselect(long nativeImeAdapterAndroid); |
588 private native void nativeSelectAll(long nativeImeAdapterAndroid); | 664 private native void nativeSelectAll(long nativeImeAdapterAndroid); |
589 private native void nativeCut(long nativeImeAdapterAndroid); | 665 private native void nativeCut(long nativeImeAdapterAndroid); |
590 private native void nativeCopy(long nativeImeAdapterAndroid); | 666 private native void nativeCopy(long nativeImeAdapterAndroid); |
591 private native void nativePaste(long nativeImeAdapterAndroid); | 667 private native void nativePaste(long nativeImeAdapterAndroid); |
592 private native void nativeResetImeAdapter(long nativeImeAdapterAndroid); | 668 private native void nativeResetImeAdapter(long nativeImeAdapterAndroid); |
593 } | 669 } |
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