1 /* 2 * Copyright (C) 2012 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 17 package android.widget; 18 19 import com.android.internal.util.ArrayUtils; 20 import com.android.internal.widget.EditableInputConnection; 21 22 import android.R; 23 import android.content.ClipData; 24 import android.content.ClipData.Item; 25 import android.content.Context; 26 import android.content.Intent; 27 import android.content.pm.PackageManager; 28 import android.content.res.TypedArray; 29 import android.graphics.Canvas; 30 import android.graphics.Color; 31 import android.graphics.Paint; 32 import android.graphics.Path; 33 import android.graphics.Rect; 34 import android.graphics.RectF; 35 import android.graphics.drawable.Drawable; 36 import android.inputmethodservice.ExtractEditText; 37 import android.os.Bundle; 38 import android.os.Handler; 39 import android.os.SystemClock; 40 import android.provider.Settings; 41 import android.text.DynamicLayout; 42 import android.text.Editable; 43 import android.text.InputType; 44 import android.text.Layout; 45 import android.text.ParcelableSpan; 46 import android.text.Selection; 47 import android.text.SpanWatcher; 48 import android.text.Spannable; 49 import android.text.SpannableStringBuilder; 50 import android.text.Spanned; 51 import android.text.StaticLayout; 52 import android.text.TextUtils; 53 import android.text.method.KeyListener; 54 import android.text.method.MetaKeyKeyListener; 55 import android.text.method.MovementMethod; 56 import android.text.method.PasswordTransformationMethod; 57 import android.text.method.WordIterator; 58 import android.text.style.EasyEditSpan; 59 import android.text.style.SuggestionRangeSpan; 60 import android.text.style.SuggestionSpan; 61 import android.text.style.TextAppearanceSpan; 62 import android.text.style.URLSpan; 63 import android.util.DisplayMetrics; 64 import android.util.Log; 65 import android.view.ActionMode; 66 import android.view.ActionMode.Callback; 67 import android.view.DisplayList; 68 import android.view.DragEvent; 69 import android.view.Gravity; 70 import android.view.HardwareCanvas; 71 import android.view.LayoutInflater; 72 import android.view.Menu; 73 import android.view.MenuItem; 74 import android.view.MotionEvent; 75 import android.view.View; 76 import android.view.View.DragShadowBuilder; 77 import android.view.View.OnClickListener; 78 import android.view.ViewConfiguration; 79 import android.view.ViewGroup; 80 import android.view.ViewGroup.LayoutParams; 81 import android.view.ViewParent; 82 import android.view.ViewTreeObserver; 83 import android.view.WindowManager; 84 import android.view.inputmethod.CorrectionInfo; 85 import android.view.inputmethod.EditorInfo; 86 import android.view.inputmethod.ExtractedText; 87 import android.view.inputmethod.ExtractedTextRequest; 88 import android.view.inputmethod.InputConnection; 89 import android.view.inputmethod.InputMethodManager; 90 import android.widget.AdapterView.OnItemClickListener; 91 import android.widget.TextView.Drawables; 92 import android.widget.TextView.OnEditorActionListener; 93 94 import java.text.BreakIterator; 95 import java.util.Arrays; 96 import java.util.Comparator; 97 import java.util.HashMap; 98 99 /** 100 * Helper class used by TextView to handle editable text views. 101 * 102 * @hide 103 */ 104 public class Editor { 105 private static final String TAG = "Editor"; 106 107 static final int BLINK = 500; 108 private static final float[] TEMP_POSITION = new float[2]; 109 private static int DRAG_SHADOW_MAX_TEXT_LENGTH = 20; 110 111 // Cursor Controllers. 112 InsertionPointCursorController mInsertionPointCursorController; 113 SelectionModifierCursorController mSelectionModifierCursorController; 114 ActionMode mSelectionActionMode; 115 boolean mInsertionControllerEnabled; 116 boolean mSelectionControllerEnabled; 117 118 // Used to highlight a word when it is corrected by the IME 119 CorrectionHighlighter mCorrectionHighlighter; 120 121 InputContentType mInputContentType; 122 InputMethodState mInputMethodState; 123 124 DisplayList[] mTextDisplayLists; 125 int mLastLayoutHeight; 126 127 boolean mFrozenWithFocus; 128 boolean mSelectionMoved; 129 boolean mTouchFocusSelected; 130 131 KeyListener mKeyListener; 132 int mInputType = EditorInfo.TYPE_NULL; 133 134 boolean mDiscardNextActionUp; 135 boolean mIgnoreActionUpEvent; 136 137 long mShowCursor; 138 Blink mBlink; 139 140 boolean mCursorVisible = true; 141 boolean mSelectAllOnFocus; 142 boolean mTextIsSelectable; 143 144 CharSequence mError; 145 boolean mErrorWasChanged; 146 ErrorPopup mErrorPopup; 147 148 /** 149 * This flag is set if the TextView tries to display an error before it 150 * is attached to the window (so its position is still unknown). 151 * It causes the error to be shown later, when onAttachedToWindow() 152 * is called. 153 */ 154 boolean mShowErrorAfterAttach; 155 156 boolean mInBatchEditControllers; 157 boolean mShowSoftInputOnFocus = true; 158 boolean mPreserveDetachedSelection; 159 boolean mTemporaryDetach; 160 161 SuggestionsPopupWindow mSuggestionsPopupWindow; 162 SuggestionRangeSpan mSuggestionRangeSpan; 163 Runnable mShowSuggestionRunnable; 164 165 final Drawable[] mCursorDrawable = new Drawable[2]; 166 int mCursorCount; // Current number of used mCursorDrawable: 0 (resource=0), 1 or 2 (split) 167 168 private Drawable mSelectHandleLeft; 169 private Drawable mSelectHandleRight; 170 private Drawable mSelectHandleCenter; 171 172 // Global listener that detects changes in the global position of the TextView 173 private PositionListener mPositionListener; 174 175 float mLastDownPositionX, mLastDownPositionY; 176 Callback mCustomSelectionActionModeCallback; 177 178 // Set when this TextView gained focus with some text selected. Will start selection mode. 179 boolean mCreatedWithASelection; 180 181 private EasyEditSpanController mEasyEditSpanController; 182 183 WordIterator mWordIterator; 184 SpellChecker mSpellChecker; 185 186 private Rect mTempRect; 187 188 private TextView mTextView; 189 190 Editor(TextView textView) { 191 mTextView = textView; 192 } 193 194 void onAttachedToWindow() { 195 if (mShowErrorAfterAttach) { 196 showError(); 197 mShowErrorAfterAttach = false; 198 } 199 mTemporaryDetach = false; 200 201 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 202 // No need to create the controller. 203 // The get method will add the listener on controller creation. 204 if (mInsertionPointCursorController != null) { 205 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 206 } 207 if (mSelectionModifierCursorController != null) { 208 mSelectionModifierCursorController.resetTouchOffsets(); 209 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 210 } 211 updateSpellCheckSpans(0, mTextView.getText().length(), 212 true /* create the spell checker if needed */); 213 214 if (mTextView.hasTransientState() && 215 mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 216 // Since transient state is reference counted make sure it stays matched 217 // with our own calls to it for managing selection. 218 // The action mode callback will set this back again when/if the action mode starts. 219 mTextView.setHasTransientState(false); 220 221 // We had an active selection from before, start the selection mode. 222 startSelectionActionMode(); 223 } 224 } 225 226 void onDetachedFromWindow() { 227 if (mError != null) { 228 hideError(); 229 } 230 231 if (mBlink != null) { 232 mBlink.removeCallbacks(mBlink); 233 } 234 235 if (mInsertionPointCursorController != null) { 236 mInsertionPointCursorController.onDetached(); 237 } 238 239 if (mSelectionModifierCursorController != null) { 240 mSelectionModifierCursorController.onDetached(); 241 } 242 243 if (mShowSuggestionRunnable != null) { 244 mTextView.removeCallbacks(mShowSuggestionRunnable); 245 } 246 247 invalidateTextDisplayList(); 248 249 if (mSpellChecker != null) { 250 mSpellChecker.closeSession(); 251 // Forces the creation of a new SpellChecker next time this window is created. 252 // Will handle the cases where the settings has been changed in the meantime. 253 mSpellChecker = null; 254 } 255 256 mPreserveDetachedSelection = true; 257 hideControllers(); 258 mPreserveDetachedSelection = false; 259 mTemporaryDetach = false; 260 } 261 262 private void showError() { 263 if (mTextView.getWindowToken() == null) { 264 mShowErrorAfterAttach = true; 265 return; 266 } 267 268 if (mErrorPopup == null) { 269 LayoutInflater inflater = LayoutInflater.from(mTextView.getContext()); 270 final TextView err = (TextView) inflater.inflate( 271 com.android.internal.R.layout.textview_hint, null); 272 273 final float scale = mTextView.getResources().getDisplayMetrics().density; 274 mErrorPopup = new ErrorPopup(err, (int)(200 * scale + 0.5f), (int)(50 * scale + 0.5f)); 275 mErrorPopup.setFocusable(false); 276 // The user is entering text, so the input method is needed. We 277 // don't want the popup to be displayed on top of it. 278 mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); 279 } 280 281 TextView tv = (TextView) mErrorPopup.getContentView(); 282 chooseSize(mErrorPopup, mError, tv); 283 tv.setText(mError); 284 285 mErrorPopup.showAsDropDown(mTextView, getErrorX(), getErrorY()); 286 mErrorPopup.fixDirection(mErrorPopup.isAboveAnchor()); 287 } 288 289 public void setError(CharSequence error, Drawable icon) { 290 mError = TextUtils.stringOrSpannedString(error); 291 mErrorWasChanged = true; 292 293 if (mError == null) { 294 if (mErrorPopup != null) { 295 if (mErrorPopup.isShowing()) { 296 mErrorPopup.dismiss(); 297 } 298 299 mErrorPopup = null; 300 } 301 302 setErrorIcon(null); 303 } else if (mTextView.isFocused()) { 304 showError(); 305 setErrorIcon(icon); 306 } 307 } 308 309 private void setErrorIcon(Drawable icon) { 310 final Drawables dr = mTextView.mDrawables; 311 if (dr != null) { 312 mTextView.setCompoundDrawables(dr.mDrawableLeft, dr.mDrawableTop, icon, 313 dr.mDrawableBottom); 314 } else { 315 mTextView.setCompoundDrawables(null, null, icon, null); 316 } 317 } 318 319 private void hideError() { 320 if (mErrorPopup != null) { 321 if (mErrorPopup.isShowing()) { 322 mErrorPopup.dismiss(); 323 } 324 325 setErrorIcon(null); 326 } 327 328 mShowErrorAfterAttach = false; 329 } 330 331 /** 332 * Returns the Y offset to make the pointy top of the error point 333 * at the middle of the error icon. 334 */ 335 private int getErrorX() { 336 /* 337 * The "25" is the distance between the point and the right edge 338 * of the background 339 */ 340 final float scale = mTextView.getResources().getDisplayMetrics().density; 341 342 final Drawables dr = mTextView.mDrawables; 343 return mTextView.getWidth() - mErrorPopup.getWidth() - mTextView.getPaddingRight() - 344 (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f); 345 } 346 347 /** 348 * Returns the Y offset to make the pointy top of the error point 349 * at the bottom of the error icon. 350 */ 351 private int getErrorY() { 352 /* 353 * Compound, not extended, because the icon is not clipped 354 * if the text height is smaller. 355 */ 356 final int compoundPaddingTop = mTextView.getCompoundPaddingTop(); 357 int vspace = mTextView.getBottom() - mTextView.getTop() - 358 mTextView.getCompoundPaddingBottom() - compoundPaddingTop; 359 360 final Drawables dr = mTextView.mDrawables; 361 int icontop = compoundPaddingTop + 362 (vspace - (dr != null ? dr.mDrawableHeightRight : 0)) / 2; 363 364 /* 365 * The "2" is the distance between the point and the top edge 366 * of the background. 367 */ 368 final float scale = mTextView.getResources().getDisplayMetrics().density; 369 return icontop + (dr != null ? dr.mDrawableHeightRight : 0) - mTextView.getHeight() - 370 (int) (2 * scale + 0.5f); 371 } 372 373 void createInputContentTypeIfNeeded() { 374 if (mInputContentType == null) { 375 mInputContentType = new InputContentType(); 376 } 377 } 378 379 void createInputMethodStateIfNeeded() { 380 if (mInputMethodState == null) { 381 mInputMethodState = new InputMethodState(); 382 } 383 } 384 385 boolean isCursorVisible() { 386 // The default value is true, even when there is no associated Editor 387 return mCursorVisible && mTextView.isTextEditable(); 388 } 389 390 void prepareCursorControllers() { 391 boolean windowSupportsHandles = false; 392 393 ViewGroup.LayoutParams params = mTextView.getRootView().getLayoutParams(); 394 if (params instanceof WindowManager.LayoutParams) { 395 WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params; 396 windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW 397 || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW; 398 } 399 400 boolean enabled = windowSupportsHandles && mTextView.getLayout() != null; 401 mInsertionControllerEnabled = enabled && isCursorVisible(); 402 mSelectionControllerEnabled = enabled && mTextView.textCanBeSelected(); 403 404 if (!mInsertionControllerEnabled) { 405 hideInsertionPointCursorController(); 406 if (mInsertionPointCursorController != null) { 407 mInsertionPointCursorController.onDetached(); 408 mInsertionPointCursorController = null; 409 } 410 } 411 412 if (!mSelectionControllerEnabled) { 413 stopSelectionActionMode(); 414 if (mSelectionModifierCursorController != null) { 415 mSelectionModifierCursorController.onDetached(); 416 mSelectionModifierCursorController = null; 417 } 418 } 419 } 420 421 private void hideInsertionPointCursorController() { 422 if (mInsertionPointCursorController != null) { 423 mInsertionPointCursorController.hide(); 424 } 425 } 426 427 /** 428 * Hides the insertion controller and stops text selection mode, hiding the selection controller 429 */ 430 void hideControllers() { 431 hideCursorControllers(); 432 hideSpanControllers(); 433 } 434 435 private void hideSpanControllers() { 436 if (mEasyEditSpanController != null) { 437 mEasyEditSpanController.hide(); 438 } 439 } 440 441 private void hideCursorControllers() { 442 if (mSuggestionsPopupWindow != null && !mSuggestionsPopupWindow.isShowingUp()) { 443 // Should be done before hide insertion point controller since it triggers a show of it 444 mSuggestionsPopupWindow.hide(); 445 } 446 hideInsertionPointCursorController(); 447 stopSelectionActionMode(); 448 } 449 450 /** 451 * Create new SpellCheckSpans on the modified region. 452 */ 453 private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) { 454 if (mTextView.isTextEditable() && mTextView.isSuggestionsEnabled() && 455 !(mTextView instanceof ExtractEditText)) { 456 if (mSpellChecker == null && createSpellChecker) { 457 mSpellChecker = new SpellChecker(mTextView); 458 } 459 if (mSpellChecker != null) { 460 mSpellChecker.spellCheck(start, end); 461 } 462 } 463 } 464 465 void onScreenStateChanged(int screenState) { 466 switch (screenState) { 467 case View.SCREEN_STATE_ON: 468 resumeBlink(); 469 break; 470 case View.SCREEN_STATE_OFF: 471 suspendBlink(); 472 break; 473 } 474 } 475 476 private void suspendBlink() { 477 if (mBlink != null) { 478 mBlink.cancel(); 479 } 480 } 481 482 private void resumeBlink() { 483 if (mBlink != null) { 484 mBlink.uncancel(); 485 makeBlink(); 486 } 487 } 488 489 void adjustInputType(boolean password, boolean passwordInputType, 490 boolean webPasswordInputType, boolean numberPasswordInputType) { 491 // mInputType has been set from inputType, possibly modified by mInputMethod. 492 // Specialize mInputType to [web]password if we have a text class and the original input 493 // type was a password. 494 if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 495 if (password || passwordInputType) { 496 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 497 | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD; 498 } 499 if (webPasswordInputType) { 500 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 501 | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 502 } 503 } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) { 504 if (numberPasswordInputType) { 505 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 506 | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD; 507 } 508 } 509 } 510 511 private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) { 512 int wid = tv.getPaddingLeft() + tv.getPaddingRight(); 513 int ht = tv.getPaddingTop() + tv.getPaddingBottom(); 514 515 int defaultWidthInPixels = mTextView.getResources().getDimensionPixelSize( 516 com.android.internal.R.dimen.textview_error_popup_default_width); 517 Layout l = new StaticLayout(text, tv.getPaint(), defaultWidthInPixels, 518 Layout.Alignment.ALIGN_NORMAL, 1, 0, true); 519 float max = 0; 520 for (int i = 0; i < l.getLineCount(); i++) { 521 max = Math.max(max, l.getLineWidth(i)); 522 } 523 524 /* 525 * Now set the popup size to be big enough for the text plus the border capped 526 * to DEFAULT_MAX_POPUP_WIDTH 527 */ 528 pop.setWidth(wid + (int) Math.ceil(max)); 529 pop.setHeight(ht + l.getHeight()); 530 } 531 532 void setFrame() { 533 if (mErrorPopup != null) { 534 TextView tv = (TextView) mErrorPopup.getContentView(); 535 chooseSize(mErrorPopup, mError, tv); 536 mErrorPopup.update(mTextView, getErrorX(), getErrorY(), 537 mErrorPopup.getWidth(), mErrorPopup.getHeight()); 538 } 539 } 540 541 /** 542 * Unlike {@link TextView#textCanBeSelected()}, this method is based on the <i>current</i> state 543 * of the TextView. textCanBeSelected() has to be true (this is one of the conditions to have 544 * a selection controller (see {@link #prepareCursorControllers()}), but this is not sufficient. 545 */ 546 private boolean canSelectText() { 547 return hasSelectionController() && mTextView.getText().length() != 0; 548 } 549 550 /** 551 * It would be better to rely on the input type for everything. A password inputType should have 552 * a password transformation. We should hence use isPasswordInputType instead of this method. 553 * 554 * We should: 555 * - Call setInputType in setKeyListener instead of changing the input type directly (which 556 * would install the correct transformation). 557 * - Refuse the installation of a non-password transformation in setTransformation if the input 558 * type is password. 559 * 560 * However, this is like this for legacy reasons and we cannot break existing apps. This method 561 * is useful since it matches what the user can see (obfuscated text or not). 562 * 563 * @return true if the current transformation method is of the password type. 564 */ 565 private boolean hasPasswordTransformationMethod() { 566 return mTextView.getTransformationMethod() instanceof PasswordTransformationMethod; 567 } 568 569 /** 570 * Adjusts selection to the word under last touch offset. 571 * Return true if the operation was successfully performed. 572 */ 573 private boolean selectCurrentWord() { 574 if (!canSelectText()) { 575 return false; 576 } 577 578 if (hasPasswordTransformationMethod()) { 579 // Always select all on a password field. 580 // Cut/copy menu entries are not available for passwords, but being able to select all 581 // is however useful to delete or paste to replace the entire content. 582 return mTextView.selectAllText(); 583 } 584 585 int inputType = mTextView.getInputType(); 586 int klass = inputType & InputType.TYPE_MASK_CLASS; 587 int variation = inputType & InputType.TYPE_MASK_VARIATION; 588 589 // Specific text field types: select the entire text for these 590 if (klass == InputType.TYPE_CLASS_NUMBER || 591 klass == InputType.TYPE_CLASS_PHONE || 592 klass == InputType.TYPE_CLASS_DATETIME || 593 variation == InputType.TYPE_TEXT_VARIATION_URI || 594 variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS || 595 variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS || 596 variation == InputType.TYPE_TEXT_VARIATION_FILTER) { 597 return mTextView.selectAllText(); 598 } 599 600 long lastTouchOffsets = getLastTouchOffsets(); 601 final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 602 final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 603 604 // Safety check in case standard touch event handling has been bypassed 605 if (minOffset < 0 || minOffset >= mTextView.getText().length()) return false; 606 if (maxOffset < 0 || maxOffset >= mTextView.getText().length()) return false; 607 608 int selectionStart, selectionEnd; 609 610 // If a URLSpan (web address, email, phone...) is found at that position, select it. 611 URLSpan[] urlSpans = ((Spanned) mTextView.getText()). 612 getSpans(minOffset, maxOffset, URLSpan.class); 613 if (urlSpans.length >= 1) { 614 URLSpan urlSpan = urlSpans[0]; 615 selectionStart = ((Spanned) mTextView.getText()).getSpanStart(urlSpan); 616 selectionEnd = ((Spanned) mTextView.getText()).getSpanEnd(urlSpan); 617 } else { 618 final WordIterator wordIterator = getWordIterator(); 619 wordIterator.setCharSequence(mTextView.getText(), minOffset, maxOffset); 620 621 selectionStart = wordIterator.getBeginning(minOffset); 622 selectionEnd = wordIterator.getEnd(maxOffset); 623 624 if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE || 625 selectionStart == selectionEnd) { 626 // Possible when the word iterator does not properly handle the text's language 627 long range = getCharRange(minOffset); 628 selectionStart = TextUtils.unpackRangeStartFromLong(range); 629 selectionEnd = TextUtils.unpackRangeEndFromLong(range); 630 } 631 } 632 633 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 634 return selectionEnd > selectionStart; 635 } 636 637 void onLocaleChanged() { 638 // Will be re-created on demand in getWordIterator with the proper new locale 639 mWordIterator = null; 640 } 641 642 /** 643 * @hide 644 */ 645 public WordIterator getWordIterator() { 646 if (mWordIterator == null) { 647 mWordIterator = new WordIterator(mTextView.getTextServicesLocale()); 648 } 649 return mWordIterator; 650 } 651 652 private long getCharRange(int offset) { 653 final int textLength = mTextView.getText().length(); 654 if (offset + 1 < textLength) { 655 final char currentChar = mTextView.getText().charAt(offset); 656 final char nextChar = mTextView.getText().charAt(offset + 1); 657 if (Character.isSurrogatePair(currentChar, nextChar)) { 658 return TextUtils.packRangeInLong(offset, offset + 2); 659 } 660 } 661 if (offset < textLength) { 662 return TextUtils.packRangeInLong(offset, offset + 1); 663 } 664 if (offset - 2 >= 0) { 665 final char previousChar = mTextView.getText().charAt(offset - 1); 666 final char previousPreviousChar = mTextView.getText().charAt(offset - 2); 667 if (Character.isSurrogatePair(previousPreviousChar, previousChar)) { 668 return TextUtils.packRangeInLong(offset - 2, offset); 669 } 670 } 671 if (offset - 1 >= 0) { 672 return TextUtils.packRangeInLong(offset - 1, offset); 673 } 674 return TextUtils.packRangeInLong(offset, offset); 675 } 676 677 private boolean touchPositionIsInSelection() { 678 int selectionStart = mTextView.getSelectionStart(); 679 int selectionEnd = mTextView.getSelectionEnd(); 680 681 if (selectionStart == selectionEnd) { 682 return false; 683 } 684 685 if (selectionStart > selectionEnd) { 686 int tmp = selectionStart; 687 selectionStart = selectionEnd; 688 selectionEnd = tmp; 689 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 690 } 691 692 SelectionModifierCursorController selectionController = getSelectionController(); 693 int minOffset = selectionController.getMinTouchOffset(); 694 int maxOffset = selectionController.getMaxTouchOffset(); 695 696 return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); 697 } 698 699 private PositionListener getPositionListener() { 700 if (mPositionListener == null) { 701 mPositionListener = new PositionListener(); 702 } 703 return mPositionListener; 704 } 705 706 private interface TextViewPositionListener { 707 public void updatePosition(int parentPositionX, int parentPositionY, 708 boolean parentPositionChanged, boolean parentScrolled); 709 } 710 711 private boolean isPositionVisible(int positionX, int positionY) { 712 synchronized (TEMP_POSITION) { 713 final float[] position = TEMP_POSITION; 714 position[0] = positionX; 715 position[1] = positionY; 716 View view = mTextView; 717 718 while (view != null) { 719 if (view != mTextView) { 720 // Local scroll is already taken into account in positionX/Y 721 position[0] -= view.getScrollX(); 722 position[1] -= view.getScrollY(); 723 } 724 725 if (position[0] < 0 || position[1] < 0 || 726 position[0] > view.getWidth() || position[1] > view.getHeight()) { 727 return false; 728 } 729 730 if (!view.getMatrix().isIdentity()) { 731 view.getMatrix().mapPoints(position); 732 } 733 734 position[0] += view.getLeft(); 735 position[1] += view.getTop(); 736 737 final ViewParent parent = view.getParent(); 738 if (parent instanceof View) { 739 view = (View) parent; 740 } else { 741 // We've reached the ViewRoot, stop iterating 742 view = null; 743 } 744 } 745 } 746 747 // We've been able to walk up the view hierarchy and the position was never clipped 748 return true; 749 } 750 751 private boolean isOffsetVisible(int offset) { 752 Layout layout = mTextView.getLayout(); 753 final int line = layout.getLineForOffset(offset); 754 final int lineBottom = layout.getLineBottom(line); 755 final int primaryHorizontal = (int) layout.getPrimaryHorizontal(offset); 756 return isPositionVisible(primaryHorizontal + mTextView.viewportToContentHorizontalOffset(), 757 lineBottom + mTextView.viewportToContentVerticalOffset()); 758 } 759 760 /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed 761 * in the view. Returns false when the position is in the empty space of left/right of text. 762 */ 763 private boolean isPositionOnText(float x, float y) { 764 Layout layout = mTextView.getLayout(); 765 if (layout == null) return false; 766 767 final int line = mTextView.getLineAtCoordinate(y); 768 x = mTextView.convertToLocalHorizontalCoordinate(x); 769 770 if (x < layout.getLineLeft(line)) return false; 771 if (x > layout.getLineRight(line)) return false; 772 return true; 773 } 774 775 public boolean performLongClick(boolean handled) { 776 // Long press in empty space moves cursor and shows the Paste affordance if available. 777 if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) && 778 mInsertionControllerEnabled) { 779 final int offset = mTextView.getOffsetForPosition(mLastDownPositionX, 780 mLastDownPositionY); 781 stopSelectionActionMode(); 782 Selection.setSelection((Spannable) mTextView.getText(), offset); 783 getInsertionController().showWithActionPopup(); 784 handled = true; 785 } 786 787 if (!handled && mSelectionActionMode != null) { 788 if (touchPositionIsInSelection()) { 789 // Start a drag 790 final int start = mTextView.getSelectionStart(); 791 final int end = mTextView.getSelectionEnd(); 792 CharSequence selectedText = mTextView.getTransformedText(start, end); 793 ClipData data = ClipData.newPlainText(null, selectedText); 794 DragLocalState localState = new DragLocalState(mTextView, start, end); 795 mTextView.startDrag(data, getTextThumbnailBuilder(selectedText), localState, 0); 796 stopSelectionActionMode(); 797 } else { 798 getSelectionController().hide(); 799 selectCurrentWord(); 800 getSelectionController().show(); 801 } 802 handled = true; 803 } 804 805 // Start a new selection 806 if (!handled) { 807 handled = startSelectionActionMode(); 808 } 809 810 return handled; 811 } 812 813 private long getLastTouchOffsets() { 814 SelectionModifierCursorController selectionController = getSelectionController(); 815 final int minOffset = selectionController.getMinTouchOffset(); 816 final int maxOffset = selectionController.getMaxTouchOffset(); 817 return TextUtils.packRangeInLong(minOffset, maxOffset); 818 } 819 820 void onFocusChanged(boolean focused, int direction) { 821 mShowCursor = SystemClock.uptimeMillis(); 822 ensureEndedBatchEdit(); 823 824 if (focused) { 825 int selStart = mTextView.getSelectionStart(); 826 int selEnd = mTextView.getSelectionEnd(); 827 828 // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection 829 // mode for these, unless there was a specific selection already started. 830 final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 && 831 selEnd == mTextView.getText().length(); 832 833 mCreatedWithASelection = mFrozenWithFocus && mTextView.hasSelection() && 834 !isFocusHighlighted; 835 836 if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { 837 // If a tap was used to give focus to that view, move cursor at tap position. 838 // Has to be done before onTakeFocus, which can be overloaded. 839 final int lastTapPosition = getLastTapPosition(); 840 if (lastTapPosition >= 0) { 841 Selection.setSelection((Spannable) mTextView.getText(), lastTapPosition); 842 } 843 844 // Note this may have to be moved out of the Editor class 845 MovementMethod mMovement = mTextView.getMovementMethod(); 846 if (mMovement != null) { 847 mMovement.onTakeFocus(mTextView, (Spannable) mTextView.getText(), direction); 848 } 849 850 // The DecorView does not have focus when the 'Done' ExtractEditText button is 851 // pressed. Since it is the ViewAncestor's mView, it requests focus before 852 // ExtractEditText clears focus, which gives focus to the ExtractEditText. 853 // This special case ensure that we keep current selection in that case. 854 // It would be better to know why the DecorView does not have focus at that time. 855 if (((mTextView instanceof ExtractEditText) || mSelectionMoved) && 856 selStart >= 0 && selEnd >= 0) { 857 /* 858 * Someone intentionally set the selection, so let them 859 * do whatever it is that they wanted to do instead of 860 * the default on-focus behavior. We reset the selection 861 * here instead of just skipping the onTakeFocus() call 862 * because some movement methods do something other than 863 * just setting the selection in theirs and we still 864 * need to go through that path. 865 */ 866 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 867 } 868 869 if (mSelectAllOnFocus) { 870 mTextView.selectAllText(); 871 } 872 873 mTouchFocusSelected = true; 874 } 875 876 mFrozenWithFocus = false; 877 mSelectionMoved = false; 878 879 if (mError != null) { 880 showError(); 881 } 882 883 makeBlink(); 884 } else { 885 if (mError != null) { 886 hideError(); 887 } 888 // Don't leave us in the middle of a batch edit. 889 mTextView.onEndBatchEdit(); 890 891 if (mTextView instanceof ExtractEditText) { 892 // terminateTextSelectionMode removes selection, which we want to keep when 893 // ExtractEditText goes out of focus. 894 final int selStart = mTextView.getSelectionStart(); 895 final int selEnd = mTextView.getSelectionEnd(); 896 hideControllers(); 897 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 898 } else { 899 if (mTemporaryDetach) mPreserveDetachedSelection = true; 900 hideControllers(); 901 if (mTemporaryDetach) mPreserveDetachedSelection = false; 902 downgradeEasyCorrectionSpans(); 903 } 904 905 // No need to create the controller 906 if (mSelectionModifierCursorController != null) { 907 mSelectionModifierCursorController.resetTouchOffsets(); 908 } 909 } 910 } 911 912 /** 913 * Downgrades to simple suggestions all the easy correction spans that are not a spell check 914 * span. 915 */ 916 private void downgradeEasyCorrectionSpans() { 917 CharSequence text = mTextView.getText(); 918 if (text instanceof Spannable) { 919 Spannable spannable = (Spannable) text; 920 SuggestionSpan[] suggestionSpans = spannable.getSpans(0, 921 spannable.length(), SuggestionSpan.class); 922 for (int i = 0; i < suggestionSpans.length; i++) { 923 int flags = suggestionSpans[i].getFlags(); 924 if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0 925 && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) { 926 flags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 927 suggestionSpans[i].setFlags(flags); 928 } 929 } 930 } 931 } 932 933 void sendOnTextChanged(int start, int after) { 934 updateSpellCheckSpans(start, start + after, false); 935 936 // Hide the controllers as soon as text is modified (typing, procedural...) 937 // We do not hide the span controllers, since they can be added when a new text is 938 // inserted into the text view (voice IME). 939 hideCursorControllers(); 940 } 941 942 private int getLastTapPosition() { 943 // No need to create the controller at that point, no last tap position saved 944 if (mSelectionModifierCursorController != null) { 945 int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); 946 if (lastTapPosition >= 0) { 947 // Safety check, should not be possible. 948 if (lastTapPosition > mTextView.getText().length()) { 949 lastTapPosition = mTextView.getText().length(); 950 } 951 return lastTapPosition; 952 } 953 } 954 955 return -1; 956 } 957 958 void onWindowFocusChanged(boolean hasWindowFocus) { 959 if (hasWindowFocus) { 960 if (mBlink != null) { 961 mBlink.uncancel(); 962 makeBlink(); 963 } 964 } else { 965 if (mBlink != null) { 966 mBlink.cancel(); 967 } 968 if (mInputContentType != null) { 969 mInputContentType.enterDown = false; 970 } 971 // Order matters! Must be done before onParentLostFocus to rely on isShowingUp 972 hideControllers(); 973 if (mSuggestionsPopupWindow != null) { 974 mSuggestionsPopupWindow.onParentLostFocus(); 975 } 976 977 // Don't leave us in the middle of a batch edit. Same as in onFocusChanged 978 ensureEndedBatchEdit(); 979 } 980 } 981 982 void onTouchEvent(MotionEvent event) { 983 if (hasSelectionController()) { 984 getSelectionController().onTouchEvent(event); 985 } 986 987 if (mShowSuggestionRunnable != null) { 988 mTextView.removeCallbacks(mShowSuggestionRunnable); 989 mShowSuggestionRunnable = null; 990 } 991 992 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 993 mLastDownPositionX = event.getX(); 994 mLastDownPositionY = event.getY(); 995 996 // Reset this state; it will be re-set if super.onTouchEvent 997 // causes focus to move to the view. 998 mTouchFocusSelected = false; 999 mIgnoreActionUpEvent = false; 1000 } 1001 } 1002 1003 public void beginBatchEdit() { 1004 mInBatchEditControllers = true; 1005 final InputMethodState ims = mInputMethodState; 1006 if (ims != null) { 1007 int nesting = ++ims.mBatchEditNesting; 1008 if (nesting == 1) { 1009 ims.mCursorChanged = false; 1010 ims.mChangedDelta = 0; 1011 if (ims.mContentChanged) { 1012 // We already have a pending change from somewhere else, 1013 // so turn this into a full update. 1014 ims.mChangedStart = 0; 1015 ims.mChangedEnd = mTextView.getText().length(); 1016 } else { 1017 ims.mChangedStart = EXTRACT_UNKNOWN; 1018 ims.mChangedEnd = EXTRACT_UNKNOWN; 1019 ims.mContentChanged = false; 1020 } 1021 mTextView.onBeginBatchEdit(); 1022 } 1023 } 1024 } 1025 1026 public void endBatchEdit() { 1027 mInBatchEditControllers = false; 1028 final InputMethodState ims = mInputMethodState; 1029 if (ims != null) { 1030 int nesting = --ims.mBatchEditNesting; 1031 if (nesting == 0) { 1032 finishBatchEdit(ims); 1033 } 1034 } 1035 } 1036 1037 void ensureEndedBatchEdit() { 1038 final InputMethodState ims = mInputMethodState; 1039 if (ims != null && ims.mBatchEditNesting != 0) { 1040 ims.mBatchEditNesting = 0; 1041 finishBatchEdit(ims); 1042 } 1043 } 1044 1045 void finishBatchEdit(final InputMethodState ims) { 1046 mTextView.onEndBatchEdit(); 1047 1048 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1049 mTextView.updateAfterEdit(); 1050 reportExtractedText(); 1051 } else if (ims.mCursorChanged) { 1052 // Cheezy way to get us to report the current cursor location. 1053 mTextView.invalidateCursor(); 1054 } 1055 } 1056 1057 static final int EXTRACT_NOTHING = -2; 1058 static final int EXTRACT_UNKNOWN = -1; 1059 1060 boolean extractText(ExtractedTextRequest request, ExtractedText outText) { 1061 return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, 1062 EXTRACT_UNKNOWN, outText); 1063 } 1064 1065 private boolean extractTextInternal(ExtractedTextRequest request, 1066 int partialStartOffset, int partialEndOffset, int delta, 1067 ExtractedText outText) { 1068 final CharSequence content = mTextView.getText(); 1069 if (content != null) { 1070 if (partialStartOffset != EXTRACT_NOTHING) { 1071 final int N = content.length(); 1072 if (partialStartOffset < 0) { 1073 outText.partialStartOffset = outText.partialEndOffset = -1; 1074 partialStartOffset = 0; 1075 partialEndOffset = N; 1076 } else { 1077 // Now use the delta to determine the actual amount of text 1078 // we need. 1079 partialEndOffset += delta; 1080 // Adjust offsets to ensure we contain full spans. 1081 if (content instanceof Spanned) { 1082 Spanned spanned = (Spanned)content; 1083 Object[] spans = spanned.getSpans(partialStartOffset, 1084 partialEndOffset, ParcelableSpan.class); 1085 int i = spans.length; 1086 while (i > 0) { 1087 i--; 1088 int j = spanned.getSpanStart(spans[i]); 1089 if (j < partialStartOffset) partialStartOffset = j; 1090 j = spanned.getSpanEnd(spans[i]); 1091 if (j > partialEndOffset) partialEndOffset = j; 1092 } 1093 } 1094 outText.partialStartOffset = partialStartOffset; 1095 outText.partialEndOffset = partialEndOffset - delta; 1096 1097 if (partialStartOffset > N) { 1098 partialStartOffset = N; 1099 } else if (partialStartOffset < 0) { 1100 partialStartOffset = 0; 1101 } 1102 if (partialEndOffset > N) { 1103 partialEndOffset = N; 1104 } else if (partialEndOffset < 0) { 1105 partialEndOffset = 0; 1106 } 1107 } 1108 if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) { 1109 outText.text = content.subSequence(partialStartOffset, 1110 partialEndOffset); 1111 } else { 1112 outText.text = TextUtils.substring(content, partialStartOffset, 1113 partialEndOffset); 1114 } 1115 } else { 1116 outText.partialStartOffset = 0; 1117 outText.partialEndOffset = 0; 1118 outText.text = ""; 1119 } 1120 outText.flags = 0; 1121 if (MetaKeyKeyListener.getMetaState(content, MetaKeyKeyListener.META_SELECTING) != 0) { 1122 outText.flags |= ExtractedText.FLAG_SELECTING; 1123 } 1124 if (mTextView.isSingleLine()) { 1125 outText.flags |= ExtractedText.FLAG_SINGLE_LINE; 1126 } 1127 outText.startOffset = 0; 1128 outText.selectionStart = mTextView.getSelectionStart(); 1129 outText.selectionEnd = mTextView.getSelectionEnd(); 1130 return true; 1131 } 1132 return false; 1133 } 1134 1135 boolean reportExtractedText() { 1136 final Editor.InputMethodState ims = mInputMethodState; 1137 if (ims != null) { 1138 final boolean contentChanged = ims.mContentChanged; 1139 if (contentChanged || ims.mSelectionModeChanged) { 1140 ims.mContentChanged = false; 1141 ims.mSelectionModeChanged = false; 1142 final ExtractedTextRequest req = ims.mExtractedTextRequest; 1143 if (req != null) { 1144 InputMethodManager imm = InputMethodManager.peekInstance(); 1145 if (imm != null) { 1146 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1147 "Retrieving extracted start=" + ims.mChangedStart + 1148 " end=" + ims.mChangedEnd + 1149 " delta=" + ims.mChangedDelta); 1150 if (ims.mChangedStart < 0 && !contentChanged) { 1151 ims.mChangedStart = EXTRACT_NOTHING; 1152 } 1153 if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, 1154 ims.mChangedDelta, ims.mExtractedText)) { 1155 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1156 "Reporting extracted start=" + 1157 ims.mExtractedText.partialStartOffset + 1158 " end=" + ims.mExtractedText.partialEndOffset + 1159 ": " + ims.mExtractedText.text); 1160 1161 imm.updateExtractedText(mTextView, req.token, ims.mExtractedText); 1162 ims.mChangedStart = EXTRACT_UNKNOWN; 1163 ims.mChangedEnd = EXTRACT_UNKNOWN; 1164 ims.mChangedDelta = 0; 1165 ims.mContentChanged = false; 1166 return true; 1167 } 1168 } 1169 } 1170 } 1171 } 1172 return false; 1173 } 1174 1175 void onDraw(Canvas canvas, Layout layout, Path highlight, Paint highlightPaint, 1176 int cursorOffsetVertical) { 1177 final int selectionStart = mTextView.getSelectionStart(); 1178 final int selectionEnd = mTextView.getSelectionEnd(); 1179 1180 final InputMethodState ims = mInputMethodState; 1181 if (ims != null && ims.mBatchEditNesting == 0) { 1182 InputMethodManager imm = InputMethodManager.peekInstance(); 1183 if (imm != null) { 1184 if (imm.isActive(mTextView)) { 1185 boolean reported = false; 1186 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1187 // We are in extract mode and the content has changed 1188 // in some way... just report complete new text to the 1189 // input method. 1190 reported = reportExtractedText(); 1191 } 1192 if (!reported && highlight != null) { 1193 int candStart = -1; 1194 int candEnd = -1; 1195 if (mTextView.getText() instanceof Spannable) { 1196 Spannable sp = (Spannable) mTextView.getText(); 1197 candStart = EditableInputConnection.getComposingSpanStart(sp); 1198 candEnd = EditableInputConnection.getComposingSpanEnd(sp); 1199 } 1200 imm.updateSelection(mTextView, 1201 selectionStart, selectionEnd, candStart, candEnd); 1202 } 1203 } 1204 1205 if (imm.isWatchingCursor(mTextView) && highlight != null) { 1206 highlight.computeBounds(ims.mTmpRectF, true); 1207 ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0; 1208 1209 canvas.getMatrix().mapPoints(ims.mTmpOffset); 1210 ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]); 1211 1212 ims.mTmpRectF.offset(0, cursorOffsetVertical); 1213 1214 ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5), 1215 (int)(ims.mTmpRectF.top + 0.5), 1216 (int)(ims.mTmpRectF.right + 0.5), 1217 (int)(ims.mTmpRectF.bottom + 0.5)); 1218 1219 imm.updateCursor(mTextView, 1220 ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top, 1221 ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom); 1222 } 1223 } 1224 } 1225 1226 if (mCorrectionHighlighter != null) { 1227 mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); 1228 } 1229 1230 if (highlight != null && selectionStart == selectionEnd && mCursorCount > 0) { 1231 drawCursor(canvas, cursorOffsetVertical); 1232 // Rely on the drawable entirely, do not draw the cursor line. 1233 // Has to be done after the IMM related code above which relies on the highlight. 1234 highlight = null; 1235 } 1236 1237 if (mTextView.canHaveDisplayList() && canvas.isHardwareAccelerated()) { 1238 drawHardwareAccelerated(canvas, layout, highlight, highlightPaint, 1239 cursorOffsetVertical); 1240 } else { 1241 layout.draw(canvas, highlight, highlightPaint, cursorOffsetVertical); 1242 } 1243 } 1244 1245 private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight, 1246 Paint highlightPaint, int cursorOffsetVertical) { 1247 final long lineRange = layout.getLineRangeForDraw(canvas); 1248 int firstLine = TextUtils.unpackRangeStartFromLong(lineRange); 1249 int lastLine = TextUtils.unpackRangeEndFromLong(lineRange); 1250 if (lastLine < 0) return; 1251 1252 layout.drawBackground(canvas, highlight, highlightPaint, cursorOffsetVertical, 1253 firstLine, lastLine); 1254 1255 if (layout instanceof DynamicLayout) { 1256 if (mTextDisplayLists == null) { 1257 mTextDisplayLists = new DisplayList[ArrayUtils.idealObjectArraySize(0)]; 1258 } 1259 1260 // If the height of the layout changes (usually when inserting or deleting a line, 1261 // but could be changes within a span), invalidate everything. We could optimize 1262 // more aggressively (for example, adding offsets to blocks) but it would be more 1263 // complex and we would only get the benefit in some cases. 1264 int layoutHeight = layout.getHeight(); 1265 if (mLastLayoutHeight != layoutHeight) { 1266 invalidateTextDisplayList(); 1267 mLastLayoutHeight = layoutHeight; 1268 } 1269 1270 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1271 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1272 int[] blockIndices = dynamicLayout.getBlockIndices(); 1273 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1274 1275 int endOfPreviousBlock = -1; 1276 int searchStartIndex = 0; 1277 for (int i = 0; i < numberOfBlocks; i++) { 1278 int blockEndLine = blockEndLines[i]; 1279 int blockIndex = blockIndices[i]; 1280 1281 final boolean blockIsInvalid = blockIndex == DynamicLayout.INVALID_BLOCK_INDEX; 1282 if (blockIsInvalid) { 1283 blockIndex = getAvailableDisplayListIndex(blockIndices, numberOfBlocks, 1284 searchStartIndex); 1285 // Note how dynamic layout's internal block indices get updated from Editor 1286 blockIndices[i] = blockIndex; 1287 searchStartIndex = blockIndex + 1; 1288 } 1289 1290 DisplayList blockDisplayList = mTextDisplayLists[blockIndex]; 1291 if (blockDisplayList == null) { 1292 blockDisplayList = mTextDisplayLists[blockIndex] = 1293 mTextView.getHardwareRenderer().createDisplayList("Text " + blockIndex); 1294 } else { 1295 if (blockIsInvalid) blockDisplayList.invalidate(); 1296 } 1297 1298 if (!blockDisplayList.isValid()) { 1299 final int blockBeginLine = endOfPreviousBlock + 1; 1300 final int top = layout.getLineTop(blockBeginLine); 1301 final int bottom = layout.getLineBottom(blockEndLine); 1302 int left = 0; 1303 int right = mTextView.getWidth(); 1304 if (mTextView.getHorizontallyScrolling()) { 1305 float min = Float.MAX_VALUE; 1306 float max = Float.MIN_VALUE; 1307 for (int line = blockBeginLine; line <= blockEndLine; line++) { 1308 min = Math.min(min, layout.getLineLeft(line)); 1309 max = Math.max(max, layout.getLineRight(line)); 1310 } 1311 left = (int) min; 1312 right = (int) (max + 0.5f); 1313 } 1314 1315 final HardwareCanvas hardwareCanvas = blockDisplayList.start(); 1316 try { 1317 // Tighten the bounds of the viewport to the actual text size 1318 hardwareCanvas.setViewport(right - left, bottom - top); 1319 // The dirty rect should always be null for a display list 1320 hardwareCanvas.onPreDraw(null); 1321 // drawText is always relative to TextView's origin, this translation brings 1322 // this range of text back to the top left corner of the viewport 1323 hardwareCanvas.translate(-left, -top); 1324 layout.drawText(hardwareCanvas, blockBeginLine, blockEndLine); 1325 // No need to untranslate, previous context is popped after drawDisplayList 1326 } finally { 1327 hardwareCanvas.onPostDraw(); 1328 blockDisplayList.end(); 1329 blockDisplayList.setLeftTopRightBottom(left, top, right, bottom); 1330 // Same as drawDisplayList below, handled by our TextView's parent 1331 blockDisplayList.setClipChildren(false); 1332 } 1333 } 1334 1335 ((HardwareCanvas) canvas).drawDisplayList(blockDisplayList, null, 1336 0 /* no child clipping, our TextView parent enforces it */); 1337 1338 endOfPreviousBlock = blockEndLine; 1339 } 1340 } else { 1341 // Boring layout is used for empty and hint text 1342 layout.drawText(canvas, firstLine, lastLine); 1343 } 1344 } 1345 1346 private int getAvailableDisplayListIndex(int[] blockIndices, int numberOfBlocks, 1347 int searchStartIndex) { 1348 int length = mTextDisplayLists.length; 1349 for (int i = searchStartIndex; i < length; i++) { 1350 boolean blockIndexFound = false; 1351 for (int j = 0; j < numberOfBlocks; j++) { 1352 if (blockIndices[j] == i) { 1353 blockIndexFound = true; 1354 break; 1355 } 1356 } 1357 if (blockIndexFound) continue; 1358 return i; 1359 } 1360 1361 // No available index found, the pool has to grow 1362 int newSize = ArrayUtils.idealIntArraySize(length + 1); 1363 DisplayList[] displayLists = new DisplayList[newSize]; 1364 System.arraycopy(mTextDisplayLists, 0, displayLists, 0, length); 1365 mTextDisplayLists = displayLists; 1366 return length; 1367 } 1368 1369 private void drawCursor(Canvas canvas, int cursorOffsetVertical) { 1370 final boolean translate = cursorOffsetVertical != 0; 1371 if (translate) canvas.translate(0, cursorOffsetVertical); 1372 for (int i = 0; i < mCursorCount; i++) { 1373 mCursorDrawable[i].draw(canvas); 1374 } 1375 if (translate) canvas.translate(0, -cursorOffsetVertical); 1376 } 1377 1378 /** 1379 * Invalidates all the sub-display lists that overlap the specified character range 1380 */ 1381 void invalidateTextDisplayList(Layout layout, int start, int end) { 1382 if (mTextDisplayLists != null && layout instanceof DynamicLayout) { 1383 final int firstLine = layout.getLineForOffset(start); 1384 final int lastLine = layout.getLineForOffset(end); 1385 1386 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1387 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1388 int[] blockIndices = dynamicLayout.getBlockIndices(); 1389 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1390 1391 int i = 0; 1392 // Skip the blocks before firstLine 1393 while (i < numberOfBlocks) { 1394 if (blockEndLines[i] >= firstLine) break; 1395 i++; 1396 } 1397 1398 // Invalidate all subsequent blocks until lastLine is passed 1399 while (i < numberOfBlocks) { 1400 final int blockIndex = blockIndices[i]; 1401 if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX) { 1402 mTextDisplayLists[blockIndex].invalidate(); 1403 } 1404 if (blockEndLines[i] >= lastLine) break; 1405 i++; 1406 } 1407 } 1408 } 1409 1410 void invalidateTextDisplayList() { 1411 if (mTextDisplayLists != null) { 1412 for (int i = 0; i < mTextDisplayLists.length; i++) { 1413 if (mTextDisplayLists[i] != null) mTextDisplayLists[i].invalidate(); 1414 } 1415 } 1416 } 1417 1418 void updateCursorsPositions() { 1419 if (mTextView.mCursorDrawableRes == 0) { 1420 mCursorCount = 0; 1421 return; 1422 } 1423 1424 Layout layout = mTextView.getLayout(); 1425 Layout hintLayout = mTextView.getHintLayout(); 1426 final int offset = mTextView.getSelectionStart(); 1427 final int line = layout.getLineForOffset(offset); 1428 final int top = layout.getLineTop(line); 1429 final int bottom = layout.getLineTop(line + 1); 1430 1431 mCursorCount = layout.isLevelBoundary(offset) ? 2 : 1; 1432 1433 int middle = bottom; 1434 if (mCursorCount == 2) { 1435 // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)} 1436 middle = (top + bottom) >> 1; 1437 } 1438 1439 updateCursorPosition(0, top, middle, getPrimaryHorizontal(layout, hintLayout, offset)); 1440 1441 if (mCursorCount == 2) { 1442 updateCursorPosition(1, middle, bottom, layout.getSecondaryHorizontal(offset)); 1443 } 1444 } 1445 1446 private float getPrimaryHorizontal(Layout layout, Layout hintLayout, int offset) { 1447 if (TextUtils.isEmpty(layout.getText()) && 1448 hintLayout != null && 1449 !TextUtils.isEmpty(hintLayout.getText())) { 1450 return hintLayout.getPrimaryHorizontal(offset); 1451 } else { 1452 return layout.getPrimaryHorizontal(offset); 1453 } 1454 } 1455 1456 /** 1457 * @return true if the selection mode was actually started. 1458 */ 1459 boolean startSelectionActionMode() { 1460 if (mSelectionActionMode != null) { 1461 // Selection action mode is already started 1462 return false; 1463 } 1464 1465 if (!canSelectText() || !mTextView.requestFocus()) { 1466 Log.w(TextView.LOG_TAG, 1467 "TextView does not support text selection. Action mode cancelled."); 1468 return false; 1469 } 1470 1471 if (!mTextView.hasSelection()) { 1472 // There may already be a selection on device rotation 1473 if (!selectCurrentWord()) { 1474 // No word found under cursor or text selection not permitted. 1475 return false; 1476 } 1477 } 1478 1479 boolean willExtract = extractedTextModeWillBeStarted(); 1480 1481 // Do not start the action mode when extracted text will show up full screen, which would 1482 // immediately hide the newly created action bar and would be visually distracting. 1483 if (!willExtract) { 1484 ActionMode.Callback actionModeCallback = new SelectionActionModeCallback(); 1485 mSelectionActionMode = mTextView.startActionMode(actionModeCallback); 1486 } 1487 1488 final boolean selectionStarted = mSelectionActionMode != null || willExtract; 1489 if (selectionStarted && !mTextView.isTextSelectable() && mShowSoftInputOnFocus) { 1490 // Show the IME to be able to replace text, except when selecting non editable text. 1491 final InputMethodManager imm = InputMethodManager.peekInstance(); 1492 if (imm != null) { 1493 imm.showSoftInput(mTextView, 0, null); 1494 } 1495 } 1496 1497 return selectionStarted; 1498 } 1499 1500 private boolean extractedTextModeWillBeStarted() { 1501 if (!(mTextView instanceof ExtractEditText)) { 1502 final InputMethodManager imm = InputMethodManager.peekInstance(); 1503 return imm != null && imm.isFullscreenMode(); 1504 } 1505 return false; 1506 } 1507 1508 /** 1509 * @return <code>true</code> if the cursor/current selection overlaps a {@link SuggestionSpan}. 1510 */ 1511 private boolean isCursorInsideSuggestionSpan() { 1512 CharSequence text = mTextView.getText(); 1513 if (!(text instanceof Spannable)) return false; 1514 1515 SuggestionSpan[] suggestionSpans = ((Spannable) text).getSpans( 1516 mTextView.getSelectionStart(), mTextView.getSelectionEnd(), SuggestionSpan.class); 1517 return (suggestionSpans.length > 0); 1518 } 1519 1520 /** 1521 * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with 1522 * {@link SuggestionSpan#FLAG_EASY_CORRECT} set. 1523 */ 1524 private boolean isCursorInsideEasyCorrectionSpan() { 1525 Spannable spannable = (Spannable) mTextView.getText(); 1526 SuggestionSpan[] suggestionSpans = spannable.getSpans(mTextView.getSelectionStart(), 1527 mTextView.getSelectionEnd(), SuggestionSpan.class); 1528 for (int i = 0; i < suggestionSpans.length; i++) { 1529 if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) { 1530 return true; 1531 } 1532 } 1533 return false; 1534 } 1535 1536 void onTouchUpEvent(MotionEvent event) { 1537 boolean selectAllGotFocus = mSelectAllOnFocus && mTextView.didTouchFocusSelect(); 1538 hideControllers(); 1539 CharSequence text = mTextView.getText(); 1540 if (!selectAllGotFocus && text.length() > 0) { 1541 // Move cursor 1542 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 1543 Selection.setSelection((Spannable) text, offset); 1544 if (mSpellChecker != null) { 1545 // When the cursor moves, the word that was typed may need spell check 1546 mSpellChecker.onSelectionChanged(); 1547 } 1548 if (!extractedTextModeWillBeStarted()) { 1549 if (isCursorInsideEasyCorrectionSpan()) { 1550 mShowSuggestionRunnable = new Runnable() { 1551 public void run() { 1552 showSuggestions(); 1553 } 1554 }; 1555 // removeCallbacks is performed on every touch 1556 mTextView.postDelayed(mShowSuggestionRunnable, 1557 ViewConfiguration.getDoubleTapTimeout()); 1558 } else if (hasInsertionController()) { 1559 getInsertionController().show(); 1560 } 1561 } 1562 } 1563 } 1564 1565 protected void stopSelectionActionMode() { 1566 if (mSelectionActionMode != null) { 1567 // This will hide the mSelectionModifierCursorController 1568 mSelectionActionMode.finish(); 1569 } 1570 } 1571 1572 /** 1573 * @return True if this view supports insertion handles. 1574 */ 1575 boolean hasInsertionController() { 1576 return mInsertionControllerEnabled; 1577 } 1578 1579 /** 1580 * @return True if this view supports selection handles. 1581 */ 1582 boolean hasSelectionController() { 1583 return mSelectionControllerEnabled; 1584 } 1585 1586 InsertionPointCursorController getInsertionController() { 1587 if (!mInsertionControllerEnabled) { 1588 return null; 1589 } 1590 1591 if (mInsertionPointCursorController == null) { 1592 mInsertionPointCursorController = new InsertionPointCursorController(); 1593 1594 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 1595 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 1596 } 1597 1598 return mInsertionPointCursorController; 1599 } 1600 1601 SelectionModifierCursorController getSelectionController() { 1602 if (!mSelectionControllerEnabled) { 1603 return null; 1604 } 1605 1606 if (mSelectionModifierCursorController == null) { 1607 mSelectionModifierCursorController = new SelectionModifierCursorController(); 1608 1609 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 1610 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 1611 } 1612 1613 return mSelectionModifierCursorController; 1614 } 1615 1616 private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) { 1617 if (mCursorDrawable[cursorIndex] == null) 1618 mCursorDrawable[cursorIndex] = mTextView.getResources().getDrawable( 1619 mTextView.mCursorDrawableRes); 1620 1621 if (mTempRect == null) mTempRect = new Rect(); 1622 mCursorDrawable[cursorIndex].getPadding(mTempRect); 1623 final int width = mCursorDrawable[cursorIndex].getIntrinsicWidth(); 1624 horizontal = Math.max(0.5f, horizontal - 0.5f); 1625 final int left = (int) (horizontal) - mTempRect.left; 1626 mCursorDrawable[cursorIndex].setBounds(left, top - mTempRect.top, left + width, 1627 bottom + mTempRect.bottom); 1628 } 1629 1630 /** 1631 * Called by the framework in response to a text auto-correction (such as fixing a typo using a 1632 * a dictionnary) from the current input method, provided by it calling 1633 * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default 1634 * implementation flashes the background of the corrected word to provide feedback to the user. 1635 * 1636 * @param info The auto correct info about the text that was corrected. 1637 */ 1638 public void onCommitCorrection(CorrectionInfo info) { 1639 if (mCorrectionHighlighter == null) { 1640 mCorrectionHighlighter = new CorrectionHighlighter(); 1641 } else { 1642 mCorrectionHighlighter.invalidate(false); 1643 } 1644 1645 mCorrectionHighlighter.highlight(info); 1646 } 1647 1648 void showSuggestions() { 1649 if (mSuggestionsPopupWindow == null) { 1650 mSuggestionsPopupWindow = new SuggestionsPopupWindow(); 1651 } 1652 hideControllers(); 1653 mSuggestionsPopupWindow.show(); 1654 } 1655 1656 boolean areSuggestionsShown() { 1657 return mSuggestionsPopupWindow != null && mSuggestionsPopupWindow.isShowing(); 1658 } 1659 1660 void onScrollChanged() { 1661 if (mPositionListener != null) { 1662 mPositionListener.onScrollChanged(); 1663 } 1664 } 1665 1666 /** 1667 * @return True when the TextView isFocused and has a valid zero-length selection (cursor). 1668 */ 1669 private boolean shouldBlink() { 1670 if (!isCursorVisible() || !mTextView.isFocused()) return false; 1671 1672 final int start = mTextView.getSelectionStart(); 1673 if (start < 0) return false; 1674 1675 final int end = mTextView.getSelectionEnd(); 1676 if (end < 0) return false; 1677 1678 return start == end; 1679 } 1680 1681 void makeBlink() { 1682 if (shouldBlink()) { 1683 mShowCursor = SystemClock.uptimeMillis(); 1684 if (mBlink == null) mBlink = new Blink(); 1685 mBlink.removeCallbacks(mBlink); 1686 mBlink.postAtTime(mBlink, mShowCursor + BLINK); 1687 } else { 1688 if (mBlink != null) mBlink.removeCallbacks(mBlink); 1689 } 1690 } 1691 1692 private class Blink extends Handler implements Runnable { 1693 private boolean mCancelled; 1694 1695 public void run() { 1696 if (mCancelled) { 1697 return; 1698 } 1699 1700 removeCallbacks(Blink.this); 1701 1702 if (shouldBlink()) { 1703 if (mTextView.getLayout() != null) { 1704 mTextView.invalidateCursorPath(); 1705 } 1706 1707 postAtTime(this, SystemClock.uptimeMillis() + BLINK); 1708 } 1709 } 1710 1711 void cancel() { 1712 if (!mCancelled) { 1713 removeCallbacks(Blink.this); 1714 mCancelled = true; 1715 } 1716 } 1717 1718 void uncancel() { 1719 mCancelled = false; 1720 } 1721 } 1722 1723 private DragShadowBuilder getTextThumbnailBuilder(CharSequence text) { 1724 TextView shadowView = (TextView) View.inflate(mTextView.getContext(), 1725 com.android.internal.R.layout.text_drag_thumbnail, null); 1726 1727 if (shadowView == null) { 1728 throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); 1729 } 1730 1731 if (text.length() > DRAG_SHADOW_MAX_TEXT_LENGTH) { 1732 text = text.subSequence(0, DRAG_SHADOW_MAX_TEXT_LENGTH); 1733 } 1734 shadowView.setText(text); 1735 shadowView.setTextColor(mTextView.getTextColors()); 1736 1737 shadowView.setTextAppearance(mTextView.getContext(), R.styleable.Theme_textAppearanceLarge); 1738 shadowView.setGravity(Gravity.CENTER); 1739 1740 shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 1741 ViewGroup.LayoutParams.WRAP_CONTENT)); 1742 1743 final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); 1744 shadowView.measure(size, size); 1745 1746 shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight()); 1747 shadowView.invalidate(); 1748 return new DragShadowBuilder(shadowView); 1749 } 1750 1751 private static class DragLocalState { 1752 public TextView sourceTextView; 1753 public int start, end; 1754 1755 public DragLocalState(TextView sourceTextView, int start, int end) { 1756 this.sourceTextView = sourceTextView; 1757 this.start = start; 1758 this.end = end; 1759 } 1760 } 1761 1762 void onDrop(DragEvent event) { 1763 StringBuilder content = new StringBuilder(""); 1764 ClipData clipData = event.getClipData(); 1765 final int itemCount = clipData.getItemCount(); 1766 for (int i=0; i < itemCount; i++) { 1767 Item item = clipData.getItemAt(i); 1768 content.append(item.coerceToStyledText(mTextView.getContext())); 1769 } 1770 1771 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 1772 1773 Object localState = event.getLocalState(); 1774 DragLocalState dragLocalState = null; 1775 if (localState instanceof DragLocalState) { 1776 dragLocalState = (DragLocalState) localState; 1777 } 1778 boolean dragDropIntoItself = dragLocalState != null && 1779 dragLocalState.sourceTextView == mTextView; 1780 1781 if (dragDropIntoItself) { 1782 if (offset >= dragLocalState.start && offset < dragLocalState.end) { 1783 // A drop inside the original selection discards the drop. 1784 return; 1785 } 1786 } 1787 1788 final int originalLength = mTextView.getText().length(); 1789 long minMax = mTextView.prepareSpacesAroundPaste(offset, offset, content); 1790 int min = TextUtils.unpackRangeStartFromLong(minMax); 1791 int max = TextUtils.unpackRangeEndFromLong(minMax); 1792 1793 Selection.setSelection((Spannable) mTextView.getText(), max); 1794 mTextView.replaceText_internal(min, max, content); 1795 1796 if (dragDropIntoItself) { 1797 int dragSourceStart = dragLocalState.start; 1798 int dragSourceEnd = dragLocalState.end; 1799 if (max <= dragSourceStart) { 1800 // Inserting text before selection has shifted positions 1801 final int shift = mTextView.getText().length() - originalLength; 1802 dragSourceStart += shift; 1803 dragSourceEnd += shift; 1804 } 1805 1806 // Delete original selection 1807 mTextView.deleteText_internal(dragSourceStart, dragSourceEnd); 1808 1809 // Make sure we do not leave two adjacent spaces. 1810 final int prevCharIdx = Math.max(0, dragSourceStart - 1); 1811 final int nextCharIdx = Math.min(mTextView.getText().length(), dragSourceStart + 1); 1812 if (nextCharIdx > prevCharIdx + 1) { 1813 CharSequence t = mTextView.getTransformedText(prevCharIdx, nextCharIdx); 1814 if (Character.isSpaceChar(t.charAt(0)) && Character.isSpaceChar(t.charAt(1))) { 1815 mTextView.deleteText_internal(prevCharIdx, prevCharIdx + 1); 1816 } 1817 } 1818 } 1819 } 1820 1821 public void addSpanWatchers(Spannable text) { 1822 final int textLength = text.length(); 1823 1824 if (mKeyListener != null) { 1825 text.setSpan(mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 1826 } 1827 1828 if (mEasyEditSpanController == null) { 1829 mEasyEditSpanController = new EasyEditSpanController(); 1830 } 1831 text.setSpan(mEasyEditSpanController, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 1832 } 1833 1834 /** 1835 * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related 1836 * pop-up should be displayed. 1837 */ 1838 class EasyEditSpanController implements SpanWatcher { 1839 1840 private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs 1841 1842 private EasyEditPopupWindow mPopupWindow; 1843 1844 private Runnable mHidePopup; 1845 1846 @Override 1847 public void onSpanAdded(Spannable text, Object span, int start, int end) { 1848 if (span instanceof EasyEditSpan) { 1849 if (mPopupWindow == null) { 1850 mPopupWindow = new EasyEditPopupWindow(); 1851 mHidePopup = new Runnable() { 1852 @Override 1853 public void run() { 1854 hide(); 1855 } 1856 }; 1857 } 1858 1859 // Make sure there is only at most one EasyEditSpan in the text 1860 if (mPopupWindow.mEasyEditSpan != null) { 1861 text.removeSpan(mPopupWindow.mEasyEditSpan); 1862 } 1863 1864 mPopupWindow.setEasyEditSpan((EasyEditSpan) span); 1865 1866 if (mTextView.getWindowVisibility() != View.VISIBLE) { 1867 // The window is not visible yet, ignore the text change. 1868 return; 1869 } 1870 1871 if (mTextView.getLayout() == null) { 1872 // The view has not been laid out yet, ignore the text change 1873 return; 1874 } 1875 1876 if (extractedTextModeWillBeStarted()) { 1877 // The input is in extract mode. Do not handle the easy edit in 1878 // the original TextView, as the ExtractEditText will do 1879 return; 1880 } 1881 1882 mPopupWindow.show(); 1883 mTextView.removeCallbacks(mHidePopup); 1884 mTextView.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS); 1885 } 1886 } 1887 1888 @Override 1889 public void onSpanRemoved(Spannable text, Object span, int start, int end) { 1890 if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { 1891 hide(); 1892 } 1893 } 1894 1895 @Override 1896 public void onSpanChanged(Spannable text, Object span, int previousStart, int previousEnd, 1897 int newStart, int newEnd) { 1898 if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { 1899 text.removeSpan(mPopupWindow.mEasyEditSpan); 1900 } 1901 } 1902 1903 public void hide() { 1904 if (mPopupWindow != null) { 1905 mPopupWindow.hide(); 1906 mTextView.removeCallbacks(mHidePopup); 1907 } 1908 } 1909 } 1910 1911 /** 1912 * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled 1913 * by {@link EasyEditSpanController}. 1914 */ 1915 private class EasyEditPopupWindow extends PinnedPopupWindow 1916 implements OnClickListener { 1917 private static final int POPUP_TEXT_LAYOUT = 1918 com.android.internal.R.layout.text_edit_action_popup_text; 1919 private TextView mDeleteTextView; 1920 private EasyEditSpan mEasyEditSpan; 1921 1922 @Override 1923 protected void createPopupWindow() { 1924 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 1925 com.android.internal.R.attr.textSelectHandleWindowStyle); 1926 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 1927 mPopupWindow.setClippingEnabled(true); 1928 } 1929 1930 @Override 1931 protected void initContentView() { 1932 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 1933 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 1934 mContentView = linearLayout; 1935 mContentView.setBackgroundResource( 1936 com.android.internal.R.drawable.text_edit_side_paste_window); 1937 1938 LayoutInflater inflater = (LayoutInflater)mTextView.getContext(). 1939 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 1940 1941 LayoutParams wrapContent = new LayoutParams( 1942 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 1943 1944 mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 1945 mDeleteTextView.setLayoutParams(wrapContent); 1946 mDeleteTextView.setText(com.android.internal.R.string.delete); 1947 mDeleteTextView.setOnClickListener(this); 1948 mContentView.addView(mDeleteTextView); 1949 } 1950 1951 public void setEasyEditSpan(EasyEditSpan easyEditSpan) { 1952 mEasyEditSpan = easyEditSpan; 1953 } 1954 1955 @Override 1956 public void onClick(View view) { 1957 if (view == mDeleteTextView) { 1958 Editable editable = (Editable) mTextView.getText(); 1959 int start = editable.getSpanStart(mEasyEditSpan); 1960 int end = editable.getSpanEnd(mEasyEditSpan); 1961 if (start >= 0 && end >= 0) { 1962 mTextView.deleteText_internal(start, end); 1963 } 1964 } 1965 } 1966 1967 @Override 1968 protected int getTextOffset() { 1969 // Place the pop-up at the end of the span 1970 Editable editable = (Editable) mTextView.getText(); 1971 return editable.getSpanEnd(mEasyEditSpan); 1972 } 1973 1974 @Override 1975 protected int getVerticalLocalPosition(int line) { 1976 return mTextView.getLayout().getLineBottom(line); 1977 } 1978 1979 @Override 1980 protected int clipVertically(int positionY) { 1981 // As we display the pop-up below the span, no vertical clipping is required. 1982 return positionY; 1983 } 1984 } 1985 1986 private class PositionListener implements ViewTreeObserver.OnPreDrawListener { 1987 // 3 handles 1988 // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others) 1989 private final int MAXIMUM_NUMBER_OF_LISTENERS = 6; 1990 private TextViewPositionListener[] mPositionListeners = 1991 new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS]; 1992 private boolean mCanMove[] = new boolean[MAXIMUM_NUMBER_OF_LISTENERS]; 1993 private boolean mPositionHasChanged = true; 1994 // Absolute position of the TextView with respect to its parent window 1995 private int mPositionX, mPositionY; 1996 private int mNumberOfListeners; 1997 private boolean mScrollHasChanged; 1998 final int[] mTempCoords = new int[2]; 1999 2000 public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) { 2001 if (mNumberOfListeners == 0) { 2002 updatePosition(); 2003 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2004 vto.addOnPreDrawListener(this); 2005 } 2006 2007 int emptySlotIndex = -1; 2008 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2009 TextViewPositionListener listener = mPositionListeners[i]; 2010 if (listener == positionListener) { 2011 return; 2012 } else if (emptySlotIndex < 0 && listener == null) { 2013 emptySlotIndex = i; 2014 } 2015 } 2016 2017 mPositionListeners[emptySlotIndex] = positionListener; 2018 mCanMove[emptySlotIndex] = canMove; 2019 mNumberOfListeners++; 2020 } 2021 2022 public void removeSubscriber(TextViewPositionListener positionListener) { 2023 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2024 if (mPositionListeners[i] == positionListener) { 2025 mPositionListeners[i] = null; 2026 mNumberOfListeners--; 2027 break; 2028 } 2029 } 2030 2031 if (mNumberOfListeners == 0) { 2032 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2033 vto.removeOnPreDrawListener(this); 2034 } 2035 } 2036 2037 public int getPositionX() { 2038 return mPositionX; 2039 } 2040 2041 public int getPositionY() { 2042 return mPositionY; 2043 } 2044 2045 @Override 2046 public boolean onPreDraw() { 2047 updatePosition(); 2048 2049 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2050 if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) { 2051 TextViewPositionListener positionListener = mPositionListeners[i]; 2052 if (positionListener != null) { 2053 positionListener.updatePosition(mPositionX, mPositionY, 2054 mPositionHasChanged, mScrollHasChanged); 2055 } 2056 } 2057 } 2058 2059 mScrollHasChanged = false; 2060 return true; 2061 } 2062 2063 private void updatePosition() { 2064 mTextView.getLocationInWindow(mTempCoords); 2065 2066 mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY; 2067 2068 mPositionX = mTempCoords[0]; 2069 mPositionY = mTempCoords[1]; 2070 } 2071 2072 public void onScrollChanged() { 2073 mScrollHasChanged = true; 2074 } 2075 } 2076 2077 private abstract class PinnedPopupWindow implements TextViewPositionListener { 2078 protected PopupWindow mPopupWindow; 2079 protected ViewGroup mContentView; 2080 int mPositionX, mPositionY; 2081 2082 protected abstract void createPopupWindow(); 2083 protected abstract void initContentView(); 2084 protected abstract int getTextOffset(); 2085 protected abstract int getVerticalLocalPosition(int line); 2086 protected abstract int clipVertically(int positionY); 2087 2088 public PinnedPopupWindow() { 2089 createPopupWindow(); 2090 2091 mPopupWindow.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 2092 mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 2093 mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 2094 2095 initContentView(); 2096 2097 LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2098 ViewGroup.LayoutParams.WRAP_CONTENT); 2099 mContentView.setLayoutParams(wrapContent); 2100 2101 mPopupWindow.setContentView(mContentView); 2102 } 2103 2104 public void show() { 2105 getPositionListener().addSubscriber(this, false /* offset is fixed */); 2106 2107 computeLocalPosition(); 2108 2109 final PositionListener positionListener = getPositionListener(); 2110 updatePosition(positionListener.getPositionX(), positionListener.getPositionY()); 2111 } 2112 2113 protected void measureContent() { 2114 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2115 mContentView.measure( 2116 View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, 2117 View.MeasureSpec.AT_MOST), 2118 View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, 2119 View.MeasureSpec.AT_MOST)); 2120 } 2121 2122 /* The popup window will be horizontally centered on the getTextOffset() and vertically 2123 * positioned according to viewportToContentHorizontalOffset. 2124 * 2125 * This method assumes that mContentView has properly been measured from its content. */ 2126 private void computeLocalPosition() { 2127 measureContent(); 2128 final int width = mContentView.getMeasuredWidth(); 2129 final int offset = getTextOffset(); 2130 mPositionX = (int) (mTextView.getLayout().getPrimaryHorizontal(offset) - width / 2.0f); 2131 mPositionX += mTextView.viewportToContentHorizontalOffset(); 2132 2133 final int line = mTextView.getLayout().getLineForOffset(offset); 2134 mPositionY = getVerticalLocalPosition(line); 2135 mPositionY += mTextView.viewportToContentVerticalOffset(); 2136 } 2137 2138 private void updatePosition(int parentPositionX, int parentPositionY) { 2139 int positionX = parentPositionX + mPositionX; 2140 int positionY = parentPositionY + mPositionY; 2141 2142 positionY = clipVertically(positionY); 2143 2144 // Horizontal clipping 2145 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2146 final int width = mContentView.getMeasuredWidth(); 2147 positionX = Math.min(displayMetrics.widthPixels - width, positionX); 2148 positionX = Math.max(0, positionX); 2149 2150 if (isShowing()) { 2151 mPopupWindow.update(positionX, positionY, -1, -1); 2152 } else { 2153 mPopupWindow.showAtLocation(mTextView, Gravity.NO_GRAVITY, 2154 positionX, positionY); 2155 } 2156 } 2157 2158 public void hide() { 2159 mPopupWindow.dismiss(); 2160 getPositionListener().removeSubscriber(this); 2161 } 2162 2163 @Override 2164 public void updatePosition(int parentPositionX, int parentPositionY, 2165 boolean parentPositionChanged, boolean parentScrolled) { 2166 // Either parentPositionChanged or parentScrolled is true, check if still visible 2167 if (isShowing() && isOffsetVisible(getTextOffset())) { 2168 if (parentScrolled) computeLocalPosition(); 2169 updatePosition(parentPositionX, parentPositionY); 2170 } else { 2171 hide(); 2172 } 2173 } 2174 2175 public boolean isShowing() { 2176 return mPopupWindow.isShowing(); 2177 } 2178 } 2179 2180 private class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener { 2181 private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE; 2182 private static final int ADD_TO_DICTIONARY = -1; 2183 private static final int DELETE_TEXT = -2; 2184 private SuggestionInfo[] mSuggestionInfos; 2185 private int mNumberOfSuggestions; 2186 private boolean mCursorWasVisibleBeforeSuggestions; 2187 private boolean mIsShowingUp = false; 2188 private SuggestionAdapter mSuggestionsAdapter; 2189 private final Comparator<SuggestionSpan> mSuggestionSpanComparator; 2190 private final HashMap<SuggestionSpan, Integer> mSpansLengths; 2191 2192 private class CustomPopupWindow extends PopupWindow { 2193 public CustomPopupWindow(Context context, int defStyle) { 2194 super(context, null, defStyle); 2195 } 2196 2197 @Override 2198 public void dismiss() { 2199 super.dismiss(); 2200 2201 getPositionListener().removeSubscriber(SuggestionsPopupWindow.this); 2202 2203 // Safe cast since show() checks that mTextView.getText() is an Editable 2204 ((Spannable) mTextView.getText()).removeSpan(mSuggestionRangeSpan); 2205 2206 mTextView.setCursorVisible(mCursorWasVisibleBeforeSuggestions); 2207 if (hasInsertionController()) { 2208 getInsertionController().show(); 2209 } 2210 } 2211 } 2212 2213 public SuggestionsPopupWindow() { 2214 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 2215 mSuggestionSpanComparator = new SuggestionSpanComparator(); 2216 mSpansLengths = new HashMap<SuggestionSpan, Integer>(); 2217 } 2218 2219 @Override 2220 protected void createPopupWindow() { 2221 mPopupWindow = new CustomPopupWindow(mTextView.getContext(), 2222 com.android.internal.R.attr.textSuggestionsWindowStyle); 2223 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 2224 mPopupWindow.setFocusable(true); 2225 mPopupWindow.setClippingEnabled(false); 2226 } 2227 2228 @Override 2229 protected void initContentView() { 2230 ListView listView = new ListView(mTextView.getContext()); 2231 mSuggestionsAdapter = new SuggestionAdapter(); 2232 listView.setAdapter(mSuggestionsAdapter); 2233 listView.setOnItemClickListener(this); 2234 mContentView = listView; 2235 2236 // Inflate the suggestion items once and for all. + 2 for add to dictionary and delete 2237 mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS + 2]; 2238 for (int i = 0; i < mSuggestionInfos.length; i++) { 2239 mSuggestionInfos[i] = new SuggestionInfo(); 2240 } 2241 } 2242 2243 public boolean isShowingUp() { 2244 return mIsShowingUp; 2245 } 2246 2247 public void onParentLostFocus() { 2248 mIsShowingUp = false; 2249 } 2250 2251 private class SuggestionInfo { 2252 int suggestionStart, suggestionEnd; // range of actual suggestion within text 2253 SuggestionSpan suggestionSpan; // the SuggestionSpan that this TextView represents 2254 int suggestionIndex; // the index of this suggestion inside suggestionSpan 2255 SpannableStringBuilder text = new SpannableStringBuilder(); 2256 TextAppearanceSpan highlightSpan = new TextAppearanceSpan(mTextView.getContext(), 2257 android.R.style.TextAppearance_SuggestionHighlight); 2258 } 2259 2260 private class SuggestionAdapter extends BaseAdapter { 2261 private LayoutInflater mInflater = (LayoutInflater) mTextView.getContext(). 2262 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2263 2264 @Override 2265 public int getCount() { 2266 return mNumberOfSuggestions; 2267 } 2268 2269 @Override 2270 public Object getItem(int position) { 2271 return mSuggestionInfos[position]; 2272 } 2273 2274 @Override 2275 public long getItemId(int position) { 2276 return position; 2277 } 2278 2279 @Override 2280 public View getView(int position, View convertView, ViewGroup parent) { 2281 TextView textView = (TextView) convertView; 2282 2283 if (textView == null) { 2284 textView = (TextView) mInflater.inflate(mTextView.mTextEditSuggestionItemLayout, 2285 parent, false); 2286 } 2287 2288 final SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 2289 textView.setText(suggestionInfo.text); 2290 2291 if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY || 2292 suggestionInfo.suggestionIndex == DELETE_TEXT) { 2293 textView.setBackgroundColor(Color.TRANSPARENT); 2294 } else { 2295 textView.setBackgroundColor(Color.WHITE); 2296 } 2297 2298 return textView; 2299 } 2300 } 2301 2302 private class SuggestionSpanComparator implements Comparator<SuggestionSpan> { 2303 public int compare(SuggestionSpan span1, SuggestionSpan span2) { 2304 final int flag1 = span1.getFlags(); 2305 final int flag2 = span2.getFlags(); 2306 if (flag1 != flag2) { 2307 // The order here should match what is used in updateDrawState 2308 final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 2309 final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 2310 final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0; 2311 final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0; 2312 if (easy1 && !misspelled1) return -1; 2313 if (easy2 && !misspelled2) return 1; 2314 if (misspelled1) return -1; 2315 if (misspelled2) return 1; 2316 } 2317 2318 return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue(); 2319 } 2320 } 2321 2322 /** 2323 * Returns the suggestion spans that cover the current cursor position. The suggestion 2324 * spans are sorted according to the length of text that they are attached to. 2325 */ 2326 private SuggestionSpan[] getSuggestionSpans() { 2327 int pos = mTextView.getSelectionStart(); 2328 Spannable spannable = (Spannable) mTextView.getText(); 2329 SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class); 2330 2331 mSpansLengths.clear(); 2332 for (SuggestionSpan suggestionSpan : suggestionSpans) { 2333 int start = spannable.getSpanStart(suggestionSpan); 2334 int end = spannable.getSpanEnd(suggestionSpan); 2335 mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start)); 2336 } 2337 2338 // The suggestions are sorted according to their types (easy correction first, then 2339 // misspelled) and to the length of the text that they cover (shorter first). 2340 Arrays.sort(suggestionSpans, mSuggestionSpanComparator); 2341 return suggestionSpans; 2342 } 2343 2344 @Override 2345 public void show() { 2346 if (!(mTextView.getText() instanceof Editable)) return; 2347 2348 if (updateSuggestions()) { 2349 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 2350 mTextView.setCursorVisible(false); 2351 mIsShowingUp = true; 2352 super.show(); 2353 } 2354 } 2355 2356 @Override 2357 protected void measureContent() { 2358 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2359 final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec( 2360 displayMetrics.widthPixels, View.MeasureSpec.AT_MOST); 2361 final int verticalMeasure = View.MeasureSpec.makeMeasureSpec( 2362 displayMetrics.heightPixels, View.MeasureSpec.AT_MOST); 2363 2364 int width = 0; 2365 View view = null; 2366 for (int i = 0; i < mNumberOfSuggestions; i++) { 2367 view = mSuggestionsAdapter.getView(i, view, mContentView); 2368 view.getLayoutParams().width = LayoutParams.WRAP_CONTENT; 2369 view.measure(horizontalMeasure, verticalMeasure); 2370 width = Math.max(width, view.getMeasuredWidth()); 2371 } 2372 2373 // Enforce the width based on actual text widths 2374 mContentView.measure( 2375 View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY), 2376 verticalMeasure); 2377 2378 Drawable popupBackground = mPopupWindow.getBackground(); 2379 if (popupBackground != null) { 2380 if (mTempRect == null) mTempRect = new Rect(); 2381 popupBackground.getPadding(mTempRect); 2382 width += mTempRect.left + mTempRect.right; 2383 } 2384 mPopupWindow.setWidth(width); 2385 } 2386 2387 @Override 2388 protected int getTextOffset() { 2389 return mTextView.getSelectionStart(); 2390 } 2391 2392 @Override 2393 protected int getVerticalLocalPosition(int line) { 2394 return mTextView.getLayout().getLineBottom(line); 2395 } 2396 2397 @Override 2398 protected int clipVertically(int positionY) { 2399 final int height = mContentView.getMeasuredHeight(); 2400 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2401 return Math.min(positionY, displayMetrics.heightPixels - height); 2402 } 2403 2404 @Override 2405 public void hide() { 2406 super.hide(); 2407 } 2408 2409 private boolean updateSuggestions() { 2410 Spannable spannable = (Spannable) mTextView.getText(); 2411 SuggestionSpan[] suggestionSpans = getSuggestionSpans(); 2412 2413 final int nbSpans = suggestionSpans.length; 2414 // Suggestions are shown after a delay: the underlying spans may have been removed 2415 if (nbSpans == 0) return false; 2416 2417 mNumberOfSuggestions = 0; 2418 int spanUnionStart = mTextView.getText().length(); 2419 int spanUnionEnd = 0; 2420 2421 SuggestionSpan misspelledSpan = null; 2422 int underlineColor = 0; 2423 2424 for (int spanIndex = 0; spanIndex < nbSpans; spanIndex++) { 2425 SuggestionSpan suggestionSpan = suggestionSpans[spanIndex]; 2426 final int spanStart = spannable.getSpanStart(suggestionSpan); 2427 final int spanEnd = spannable.getSpanEnd(suggestionSpan); 2428 spanUnionStart = Math.min(spanStart, spanUnionStart); 2429 spanUnionEnd = Math.max(spanEnd, spanUnionEnd); 2430 2431 if ((suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) { 2432 misspelledSpan = suggestionSpan; 2433 } 2434 2435 // The first span dictates the background color of the highlighted text 2436 if (spanIndex == 0) underlineColor = suggestionSpan.getUnderlineColor(); 2437 2438 String[] suggestions = suggestionSpan.getSuggestions(); 2439 int nbSuggestions = suggestions.length; 2440 for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) { 2441 String suggestion = suggestions[suggestionIndex]; 2442 2443 boolean suggestionIsDuplicate = false; 2444 for (int i = 0; i < mNumberOfSuggestions; i++) { 2445 if (mSuggestionInfos[i].text.toString().equals(suggestion)) { 2446 SuggestionSpan otherSuggestionSpan = mSuggestionInfos[i].suggestionSpan; 2447 final int otherSpanStart = spannable.getSpanStart(otherSuggestionSpan); 2448 final int otherSpanEnd = spannable.getSpanEnd(otherSuggestionSpan); 2449 if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) { 2450 suggestionIsDuplicate = true; 2451 break; 2452 } 2453 } 2454 } 2455 2456 if (!suggestionIsDuplicate) { 2457 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2458 suggestionInfo.suggestionSpan = suggestionSpan; 2459 suggestionInfo.suggestionIndex = suggestionIndex; 2460 suggestionInfo.text.replace(0, suggestionInfo.text.length(), suggestion); 2461 2462 mNumberOfSuggestions++; 2463 2464 if (mNumberOfSuggestions == MAX_NUMBER_SUGGESTIONS) { 2465 // Also end outer for loop 2466 spanIndex = nbSpans; 2467 break; 2468 } 2469 } 2470 } 2471 } 2472 2473 for (int i = 0; i < mNumberOfSuggestions; i++) { 2474 highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd); 2475 } 2476 2477 // Add "Add to dictionary" item if there is a span with the misspelled flag 2478 if (misspelledSpan != null) { 2479 final int misspelledStart = spannable.getSpanStart(misspelledSpan); 2480 final int misspelledEnd = spannable.getSpanEnd(misspelledSpan); 2481 if (misspelledStart >= 0 && misspelledEnd > misspelledStart) { 2482 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2483 suggestionInfo.suggestionSpan = misspelledSpan; 2484 suggestionInfo.suggestionIndex = ADD_TO_DICTIONARY; 2485 suggestionInfo.text.replace(0, suggestionInfo.text.length(), mTextView. 2486 getContext().getString(com.android.internal.R.string.addToDictionary)); 2487 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0, 2488 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2489 2490 mNumberOfSuggestions++; 2491 } 2492 } 2493 2494 // Delete item 2495 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2496 suggestionInfo.suggestionSpan = null; 2497 suggestionInfo.suggestionIndex = DELETE_TEXT; 2498 suggestionInfo.text.replace(0, suggestionInfo.text.length(), 2499 mTextView.getContext().getString(com.android.internal.R.string.deleteText)); 2500 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0, 2501 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2502 mNumberOfSuggestions++; 2503 2504 if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan(); 2505 if (underlineColor == 0) { 2506 // Fallback on the default highlight color when the first span does not provide one 2507 mSuggestionRangeSpan.setBackgroundColor(mTextView.mHighlightColor); 2508 } else { 2509 final float BACKGROUND_TRANSPARENCY = 0.4f; 2510 final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY); 2511 mSuggestionRangeSpan.setBackgroundColor( 2512 (underlineColor & 0x00FFFFFF) + (newAlpha << 24)); 2513 } 2514 spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd, 2515 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2516 2517 mSuggestionsAdapter.notifyDataSetChanged(); 2518 return true; 2519 } 2520 2521 private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart, 2522 int unionEnd) { 2523 final Spannable text = (Spannable) mTextView.getText(); 2524 final int spanStart = text.getSpanStart(suggestionInfo.suggestionSpan); 2525 final int spanEnd = text.getSpanEnd(suggestionInfo.suggestionSpan); 2526 2527 // Adjust the start/end of the suggestion span 2528 suggestionInfo.suggestionStart = spanStart - unionStart; 2529 suggestionInfo.suggestionEnd = suggestionInfo.suggestionStart 2530 + suggestionInfo.text.length(); 2531 2532 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 2533 suggestionInfo.text.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2534 2535 // Add the text before and after the span. 2536 final String textAsString = text.toString(); 2537 suggestionInfo.text.insert(0, textAsString.substring(unionStart, spanStart)); 2538 suggestionInfo.text.append(textAsString.substring(spanEnd, unionEnd)); 2539 } 2540 2541 @Override 2542 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 2543 Editable editable = (Editable) mTextView.getText(); 2544 SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 2545 2546 if (suggestionInfo.suggestionIndex == DELETE_TEXT) { 2547 final int spanUnionStart = editable.getSpanStart(mSuggestionRangeSpan); 2548 int spanUnionEnd = editable.getSpanEnd(mSuggestionRangeSpan); 2549 if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) { 2550 // Do not leave two adjacent spaces after deletion, or one at beginning of text 2551 if (spanUnionEnd < editable.length() && 2552 Character.isSpaceChar(editable.charAt(spanUnionEnd)) && 2553 (spanUnionStart == 0 || 2554 Character.isSpaceChar(editable.charAt(spanUnionStart - 1)))) { 2555 spanUnionEnd = spanUnionEnd + 1; 2556 } 2557 mTextView.deleteText_internal(spanUnionStart, spanUnionEnd); 2558 } 2559 hide(); 2560 return; 2561 } 2562 2563 final int spanStart = editable.getSpanStart(suggestionInfo.suggestionSpan); 2564 final int spanEnd = editable.getSpanEnd(suggestionInfo.suggestionSpan); 2565 if (spanStart < 0 || spanEnd <= spanStart) { 2566 // Span has been removed 2567 hide(); 2568 return; 2569 } 2570 2571 final String originalText = editable.toString().substring(spanStart, spanEnd); 2572 2573 if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY) { 2574 Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT); 2575 intent.putExtra("word", originalText); 2576 intent.putExtra("locale", mTextView.getTextServicesLocale().toString()); 2577 intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); 2578 mTextView.getContext().startActivity(intent); 2579 // There is no way to know if the word was indeed added. Re-check. 2580 // TODO The ExtractEditText should remove the span in the original text instead 2581 editable.removeSpan(suggestionInfo.suggestionSpan); 2582 Selection.setSelection(editable, spanEnd); 2583 updateSpellCheckSpans(spanStart, spanEnd, false); 2584 } else { 2585 // SuggestionSpans are removed by replace: save them before 2586 SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd, 2587 SuggestionSpan.class); 2588 final int length = suggestionSpans.length; 2589 int[] suggestionSpansStarts = new int[length]; 2590 int[] suggestionSpansEnds = new int[length]; 2591 int[] suggestionSpansFlags = new int[length]; 2592 for (int i = 0; i < length; i++) { 2593 final SuggestionSpan suggestionSpan = suggestionSpans[i]; 2594 suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan); 2595 suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan); 2596 suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan); 2597 2598 // Remove potential misspelled flags 2599 int suggestionSpanFlags = suggestionSpan.getFlags(); 2600 if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) > 0) { 2601 suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED; 2602 suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 2603 suggestionSpan.setFlags(suggestionSpanFlags); 2604 } 2605 } 2606 2607 final int suggestionStart = suggestionInfo.suggestionStart; 2608 final int suggestionEnd = suggestionInfo.suggestionEnd; 2609 final String suggestion = suggestionInfo.text.subSequence( 2610 suggestionStart, suggestionEnd).toString(); 2611 mTextView.replaceText_internal(spanStart, spanEnd, suggestion); 2612 2613 // Notify source IME of the suggestion pick. Do this before swaping texts. 2614 if (!TextUtils.isEmpty( 2615 suggestionInfo.suggestionSpan.getNotificationTargetClassName())) { 2616 InputMethodManager imm = InputMethodManager.peekInstance(); 2617 if (imm != null) { 2618 imm.notifySuggestionPicked(suggestionInfo.suggestionSpan, originalText, 2619 suggestionInfo.suggestionIndex); 2620 } 2621 } 2622 2623 // Swap text content between actual text and Suggestion span 2624 String[] suggestions = suggestionInfo.suggestionSpan.getSuggestions(); 2625 suggestions[suggestionInfo.suggestionIndex] = originalText; 2626 2627 // Restore previous SuggestionSpans 2628 final int lengthDifference = suggestion.length() - (spanEnd - spanStart); 2629 for (int i = 0; i < length; i++) { 2630 // Only spans that include the modified region make sense after replacement 2631 // Spans partially included in the replaced region are removed, there is no 2632 // way to assign them a valid range after replacement 2633 if (suggestionSpansStarts[i] <= spanStart && 2634 suggestionSpansEnds[i] >= spanEnd) { 2635 mTextView.setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i], 2636 suggestionSpansEnds[i] + lengthDifference, suggestionSpansFlags[i]); 2637 } 2638 } 2639 2640 // Move cursor at the end of the replaced word 2641 final int newCursorPosition = spanEnd + lengthDifference; 2642 mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); 2643 } 2644 2645 hide(); 2646 } 2647 } 2648 2649 /** 2650 * An ActionMode Callback class that is used to provide actions while in text selection mode. 2651 * 2652 * The default callback provides a subset of Select All, Cut, Copy and Paste actions, depending 2653 * on which of these this TextView supports. 2654 */ 2655 private class SelectionActionModeCallback implements ActionMode.Callback { 2656 2657 @Override 2658 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 2659 TypedArray styledAttributes = mTextView.getContext().obtainStyledAttributes( 2660 com.android.internal.R.styleable.SelectionModeDrawables); 2661 2662 boolean allowText = mTextView.getContext().getResources().getBoolean( 2663 com.android.internal.R.bool.config_allowActionMenuItemTextWithIcon); 2664 2665 mode.setTitle(mTextView.getContext().getString( 2666 com.android.internal.R.string.textSelectionCABTitle)); 2667 mode.setSubtitle(null); 2668 mode.setTitleOptionalHint(true); 2669 2670 int selectAllIconId = 0; // No icon by default 2671 if (!allowText) { 2672 // Provide an icon, text will not be displayed on smaller screens. 2673 selectAllIconId = styledAttributes.getResourceId( 2674 R.styleable.SelectionModeDrawables_actionModeSelectAllDrawable, 0); 2675 } 2676 2677 menu.add(0, TextView.ID_SELECT_ALL, 0, com.android.internal.R.string.selectAll). 2678 setIcon(selectAllIconId). 2679 setAlphabeticShortcut('a'). 2680 setShowAsAction( 2681 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2682 2683 if (mTextView.canCut()) { 2684 menu.add(0, TextView.ID_CUT, 0, com.android.internal.R.string.cut). 2685 setIcon(styledAttributes.getResourceId( 2686 R.styleable.SelectionModeDrawables_actionModeCutDrawable, 0)). 2687 setAlphabeticShortcut('x'). 2688 setShowAsAction( 2689 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2690 } 2691 2692 if (mTextView.canCopy()) { 2693 menu.add(0, TextView.ID_COPY, 0, com.android.internal.R.string.copy). 2694 setIcon(styledAttributes.getResourceId( 2695 R.styleable.SelectionModeDrawables_actionModeCopyDrawable, 0)). 2696 setAlphabeticShortcut('c'). 2697 setShowAsAction( 2698 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2699 } 2700 2701 if (mTextView.canPaste()) { 2702 menu.add(0, TextView.ID_PASTE, 0, com.android.internal.R.string.paste). 2703 setIcon(styledAttributes.getResourceId( 2704 R.styleable.SelectionModeDrawables_actionModePasteDrawable, 0)). 2705 setAlphabeticShortcut('v'). 2706 setShowAsAction( 2707 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2708 } 2709 2710 styledAttributes.recycle(); 2711 2712 if (mCustomSelectionActionModeCallback != null) { 2713 if (!mCustomSelectionActionModeCallback.onCreateActionMode(mode, menu)) { 2714 // The custom mode can choose to cancel the action mode 2715 return false; 2716 } 2717 } 2718 2719 if (menu.hasVisibleItems() || mode.getCustomView() != null) { 2720 getSelectionController().show(); 2721 mTextView.setHasTransientState(true); 2722 return true; 2723 } else { 2724 return false; 2725 } 2726 } 2727 2728 @Override 2729 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 2730 if (mCustomSelectionActionModeCallback != null) { 2731 return mCustomSelectionActionModeCallback.onPrepareActionMode(mode, menu); 2732 } 2733 return true; 2734 } 2735 2736 @Override 2737 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 2738 if (mCustomSelectionActionModeCallback != null && 2739 mCustomSelectionActionModeCallback.onActionItemClicked(mode, item)) { 2740 return true; 2741 } 2742 return mTextView.onTextContextMenuItem(item.getItemId()); 2743 } 2744 2745 @Override 2746 public void onDestroyActionMode(ActionMode mode) { 2747 if (mCustomSelectionActionModeCallback != null) { 2748 mCustomSelectionActionModeCallback.onDestroyActionMode(mode); 2749 } 2750 2751 /* 2752 * If we're ending this mode because we're detaching from a window, 2753 * we still have selection state to preserve. Don't clear it, we'll 2754 * bring back the selection mode when (if) we get reattached. 2755 */ 2756 if (!mPreserveDetachedSelection) { 2757 Selection.setSelection((Spannable) mTextView.getText(), 2758 mTextView.getSelectionEnd()); 2759 mTextView.setHasTransientState(false); 2760 } 2761 2762 if (mSelectionModifierCursorController != null) { 2763 mSelectionModifierCursorController.hide(); 2764 } 2765 2766 mSelectionActionMode = null; 2767 } 2768 } 2769 2770 private class ActionPopupWindow extends PinnedPopupWindow implements OnClickListener { 2771 private static final int POPUP_TEXT_LAYOUT = 2772 com.android.internal.R.layout.text_edit_action_popup_text; 2773 private TextView mPasteTextView; 2774 private TextView mReplaceTextView; 2775 2776 @Override 2777 protected void createPopupWindow() { 2778 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 2779 com.android.internal.R.attr.textSelectHandleWindowStyle); 2780 mPopupWindow.setClippingEnabled(true); 2781 } 2782 2783 @Override 2784 protected void initContentView() { 2785 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 2786 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 2787 mContentView = linearLayout; 2788 mContentView.setBackgroundResource( 2789 com.android.internal.R.drawable.text_edit_paste_window); 2790 2791 LayoutInflater inflater = (LayoutInflater) mTextView.getContext(). 2792 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2793 2794 LayoutParams wrapContent = new LayoutParams( 2795 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 2796 2797 mPasteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2798 mPasteTextView.setLayoutParams(wrapContent); 2799 mContentView.addView(mPasteTextView); 2800 mPasteTextView.setText(com.android.internal.R.string.paste); 2801 mPasteTextView.setOnClickListener(this); 2802 2803 mReplaceTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2804 mReplaceTextView.setLayoutParams(wrapContent); 2805 mContentView.addView(mReplaceTextView); 2806 mReplaceTextView.setText(com.android.internal.R.string.replace); 2807 mReplaceTextView.setOnClickListener(this); 2808 } 2809 2810 @Override 2811 public void show() { 2812 boolean canPaste = mTextView.canPaste(); 2813 boolean canSuggest = mTextView.isSuggestionsEnabled() && isCursorInsideSuggestionSpan(); 2814 mPasteTextView.setVisibility(canPaste ? View.VISIBLE : View.GONE); 2815 mReplaceTextView.setVisibility(canSuggest ? View.VISIBLE : View.GONE); 2816 2817 if (!canPaste && !canSuggest) return; 2818 2819 super.show(); 2820 } 2821 2822 @Override 2823 public void onClick(View view) { 2824 if (view == mPasteTextView && mTextView.canPaste()) { 2825 mTextView.onTextContextMenuItem(TextView.ID_PASTE); 2826 hide(); 2827 } else if (view == mReplaceTextView) { 2828 int middle = (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 2829 stopSelectionActionMode(); 2830 Selection.setSelection((Spannable) mTextView.getText(), middle); 2831 showSuggestions(); 2832 } 2833 } 2834 2835 @Override 2836 protected int getTextOffset() { 2837 return (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 2838 } 2839 2840 @Override 2841 protected int getVerticalLocalPosition(int line) { 2842 return mTextView.getLayout().getLineTop(line) - mContentView.getMeasuredHeight(); 2843 } 2844 2845 @Override 2846 protected int clipVertically(int positionY) { 2847 if (positionY < 0) { 2848 final int offset = getTextOffset(); 2849 final Layout layout = mTextView.getLayout(); 2850 final int line = layout.getLineForOffset(offset); 2851 positionY += layout.getLineBottom(line) - layout.getLineTop(line); 2852 positionY += mContentView.getMeasuredHeight(); 2853 2854 // Assumes insertion and selection handles share the same height 2855 final Drawable handle = mTextView.getResources().getDrawable( 2856 mTextView.mTextSelectHandleRes); 2857 positionY += handle.getIntrinsicHeight(); 2858 } 2859 2860 return positionY; 2861 } 2862 } 2863 2864 private abstract class HandleView extends View implements TextViewPositionListener { 2865 protected Drawable mDrawable; 2866 protected Drawable mDrawableLtr; 2867 protected Drawable mDrawableRtl; 2868 private final PopupWindow mContainer; 2869 // Position with respect to the parent TextView 2870 private int mPositionX, mPositionY; 2871 private boolean mIsDragging; 2872 // Offset from touch position to mPosition 2873 private float mTouchToWindowOffsetX, mTouchToWindowOffsetY; 2874 protected int mHotspotX; 2875 // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up 2876 private float mTouchOffsetY; 2877 // Where the touch position should be on the handle to ensure a maximum cursor visibility 2878 private float mIdealVerticalOffset; 2879 // Parent's (TextView) previous position in window 2880 private int mLastParentX, mLastParentY; 2881 // Transient action popup window for Paste and Replace actions 2882 protected ActionPopupWindow mActionPopupWindow; 2883 // Previous text character offset 2884 private int mPreviousOffset = -1; 2885 // Previous text character offset 2886 private boolean mPositionHasChanged = true; 2887 // Used to delay the appearance of the action popup window 2888 private Runnable mActionPopupShower; 2889 2890 public HandleView(Drawable drawableLtr, Drawable drawableRtl) { 2891 super(mTextView.getContext()); 2892 mContainer = new PopupWindow(mTextView.getContext(), null, 2893 com.android.internal.R.attr.textSelectHandleWindowStyle); 2894 mContainer.setSplitTouchEnabled(true); 2895 mContainer.setClippingEnabled(false); 2896 mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 2897 mContainer.setContentView(this); 2898 2899 mDrawableLtr = drawableLtr; 2900 mDrawableRtl = drawableRtl; 2901 2902 updateDrawable(); 2903 2904 final int handleHeight = mDrawable.getIntrinsicHeight(); 2905 mTouchOffsetY = -0.3f * handleHeight; 2906 mIdealVerticalOffset = 0.7f * handleHeight; 2907 } 2908 2909 protected void updateDrawable() { 2910 final int offset = getCurrentCursorOffset(); 2911 final boolean isRtlCharAtOffset = mTextView.getLayout().isRtlCharAt(offset); 2912 mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr; 2913 mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset); 2914 } 2915 2916 protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun); 2917 2918 // Touch-up filter: number of previous positions remembered 2919 private static final int HISTORY_SIZE = 5; 2920 private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150; 2921 private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350; 2922 private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; 2923 private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; 2924 private int mPreviousOffsetIndex = 0; 2925 private int mNumberPreviousOffsets = 0; 2926 2927 private void startTouchUpFilter(int offset) { 2928 mNumberPreviousOffsets = 0; 2929 addPositionToTouchUpFilter(offset); 2930 } 2931 2932 private void addPositionToTouchUpFilter(int offset) { 2933 mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; 2934 mPreviousOffsets[mPreviousOffsetIndex] = offset; 2935 mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); 2936 mNumberPreviousOffsets++; 2937 } 2938 2939 private void filterOnTouchUp() { 2940 final long now = SystemClock.uptimeMillis(); 2941 int i = 0; 2942 int index = mPreviousOffsetIndex; 2943 final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); 2944 while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) { 2945 i++; 2946 index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; 2947 } 2948 2949 if (i > 0 && i < iMax && 2950 (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) { 2951 positionAtCursorOffset(mPreviousOffsets[index], false); 2952 } 2953 } 2954 2955 public boolean offsetHasBeenChanged() { 2956 return mNumberPreviousOffsets > 1; 2957 } 2958 2959 @Override 2960 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 2961 setMeasuredDimension(mDrawable.getIntrinsicWidth(), mDrawable.getIntrinsicHeight()); 2962 } 2963 2964 public void show() { 2965 if (isShowing()) return; 2966 2967 getPositionListener().addSubscriber(this, true /* local position may change */); 2968 2969 // Make sure the offset is always considered new, even when focusing at same position 2970 mPreviousOffset = -1; 2971 positionAtCursorOffset(getCurrentCursorOffset(), false); 2972 2973 hideActionPopupWindow(); 2974 } 2975 2976 protected void dismiss() { 2977 mIsDragging = false; 2978 mContainer.dismiss(); 2979 onDetached(); 2980 } 2981 2982 public void hide() { 2983 dismiss(); 2984 2985 getPositionListener().removeSubscriber(this); 2986 } 2987 2988 void showActionPopupWindow(int delay) { 2989 if (mActionPopupWindow == null) { 2990 mActionPopupWindow = new ActionPopupWindow(); 2991 } 2992 if (mActionPopupShower == null) { 2993 mActionPopupShower = new Runnable() { 2994 public void run() { 2995 mActionPopupWindow.show(); 2996 } 2997 }; 2998 } else { 2999 mTextView.removeCallbacks(mActionPopupShower); 3000 } 3001 mTextView.postDelayed(mActionPopupShower, delay); 3002 } 3003 3004 protected void hideActionPopupWindow() { 3005 if (mActionPopupShower != null) { 3006 mTextView.removeCallbacks(mActionPopupShower); 3007 } 3008 if (mActionPopupWindow != null) { 3009 mActionPopupWindow.hide(); 3010 } 3011 } 3012 3013 public boolean isShowing() { 3014 return mContainer.isShowing(); 3015 } 3016 3017 private boolean isVisible() { 3018 // Always show a dragging handle. 3019 if (mIsDragging) { 3020 return true; 3021 } 3022 3023 if (mTextView.isInBatchEditMode()) { 3024 return false; 3025 } 3026 3027 return isPositionVisible(mPositionX + mHotspotX, mPositionY); 3028 } 3029 3030 public abstract int getCurrentCursorOffset(); 3031 3032 protected abstract void updateSelection(int offset); 3033 3034 public abstract void updatePosition(float x, float y); 3035 3036 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 3037 // A HandleView relies on the layout, which may be nulled by external methods 3038 Layout layout = mTextView.getLayout(); 3039 if (layout == null) { 3040 // Will update controllers' state, hiding them and stopping selection mode if needed 3041 prepareCursorControllers(); 3042 return; 3043 } 3044 3045 boolean offsetChanged = offset != mPreviousOffset; 3046 if (offsetChanged || parentScrolled) { 3047 if (offsetChanged) { 3048 updateSelection(offset); 3049 addPositionToTouchUpFilter(offset); 3050 } 3051 final int line = layout.getLineForOffset(offset); 3052 3053 mPositionX = (int) (layout.getPrimaryHorizontal(offset) - 0.5f - mHotspotX); 3054 mPositionY = layout.getLineBottom(line); 3055 3056 // Take TextView's padding and scroll into account. 3057 mPositionX += mTextView.viewportToContentHorizontalOffset(); 3058 mPositionY += mTextView.viewportToContentVerticalOffset(); 3059 3060 mPreviousOffset = offset; 3061 mPositionHasChanged = true; 3062 } 3063 } 3064 3065 public void updatePosition(int parentPositionX, int parentPositionY, 3066 boolean parentPositionChanged, boolean parentScrolled) { 3067 positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled); 3068 if (parentPositionChanged || mPositionHasChanged) { 3069 if (mIsDragging) { 3070 // Update touchToWindow offset in case of parent scrolling while dragging 3071 if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) { 3072 mTouchToWindowOffsetX += parentPositionX - mLastParentX; 3073 mTouchToWindowOffsetY += parentPositionY - mLastParentY; 3074 mLastParentX = parentPositionX; 3075 mLastParentY = parentPositionY; 3076 } 3077 3078 onHandleMoved(); 3079 } 3080 3081 if (isVisible()) { 3082 final int positionX = parentPositionX + mPositionX; 3083 final int positionY = parentPositionY + mPositionY; 3084 if (isShowing()) { 3085 mContainer.update(positionX, positionY, -1, -1); 3086 } else { 3087 mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, 3088 positionX, positionY); 3089 } 3090 } else { 3091 if (isShowing()) { 3092 dismiss(); 3093 } 3094 } 3095 3096 mPositionHasChanged = false; 3097 } 3098 } 3099 3100 @Override 3101 protected void onDraw(Canvas c) { 3102 mDrawable.setBounds(0, 0, mRight - mLeft, mBottom - mTop); 3103 mDrawable.draw(c); 3104 } 3105 3106 @Override 3107 public boolean onTouchEvent(MotionEvent ev) { 3108 switch (ev.getActionMasked()) { 3109 case MotionEvent.ACTION_DOWN: { 3110 startTouchUpFilter(getCurrentCursorOffset()); 3111 mTouchToWindowOffsetX = ev.getRawX() - mPositionX; 3112 mTouchToWindowOffsetY = ev.getRawY() - mPositionY; 3113 3114 final PositionListener positionListener = getPositionListener(); 3115 mLastParentX = positionListener.getPositionX(); 3116 mLastParentY = positionListener.getPositionY(); 3117 mIsDragging = true; 3118 break; 3119 } 3120 3121 case MotionEvent.ACTION_MOVE: { 3122 final float rawX = ev.getRawX(); 3123 final float rawY = ev.getRawY(); 3124 3125 // Vertical hysteresis: vertical down movement tends to snap to ideal offset 3126 final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY; 3127 final float currentVerticalOffset = rawY - mPositionY - mLastParentY; 3128 float newVerticalOffset; 3129 if (previousVerticalOffset < mIdealVerticalOffset) { 3130 newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset); 3131 newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset); 3132 } else { 3133 newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset); 3134 newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset); 3135 } 3136 mTouchToWindowOffsetY = newVerticalOffset + mLastParentY; 3137 3138 final float newPosX = rawX - mTouchToWindowOffsetX + mHotspotX; 3139 final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY; 3140 3141 updatePosition(newPosX, newPosY); 3142 break; 3143 } 3144 3145 case MotionEvent.ACTION_UP: 3146 filterOnTouchUp(); 3147 mIsDragging = false; 3148 break; 3149 3150 case MotionEvent.ACTION_CANCEL: 3151 mIsDragging = false; 3152 break; 3153 } 3154 return true; 3155 } 3156 3157 public boolean isDragging() { 3158 return mIsDragging; 3159 } 3160 3161 void onHandleMoved() { 3162 hideActionPopupWindow(); 3163 } 3164 3165 public void onDetached() { 3166 hideActionPopupWindow(); 3167 } 3168 } 3169 3170 private class InsertionHandleView extends HandleView { 3171 private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000; 3172 private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds 3173 3174 // Used to detect taps on the insertion handle, which will affect the ActionPopupWindow 3175 private float mDownPositionX, mDownPositionY; 3176 private Runnable mHider; 3177 3178 public InsertionHandleView(Drawable drawable) { 3179 super(drawable, drawable); 3180 } 3181 3182 @Override 3183 public void show() { 3184 super.show(); 3185 3186 final long durationSinceCutOrCopy = 3187 SystemClock.uptimeMillis() - TextView.LAST_CUT_OR_COPY_TIME; 3188 if (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION) { 3189 showActionPopupWindow(0); 3190 } 3191 3192 hideAfterDelay(); 3193 } 3194 3195 public void showWithActionPopup() { 3196 show(); 3197 showActionPopupWindow(0); 3198 } 3199 3200 private void hideAfterDelay() { 3201 if (mHider == null) { 3202 mHider = new Runnable() { 3203 public void run() { 3204 hide(); 3205 } 3206 }; 3207 } else { 3208 removeHiderCallback(); 3209 } 3210 mTextView.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT); 3211 } 3212 3213 private void removeHiderCallback() { 3214 if (mHider != null) { 3215 mTextView.removeCallbacks(mHider); 3216 } 3217 } 3218 3219 @Override 3220 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3221 return drawable.getIntrinsicWidth() / 2; 3222 } 3223 3224 @Override 3225 public boolean onTouchEvent(MotionEvent ev) { 3226 final boolean result = super.onTouchEvent(ev); 3227 3228 switch (ev.getActionMasked()) { 3229 case MotionEvent.ACTION_DOWN: 3230 mDownPositionX = ev.getRawX(); 3231 mDownPositionY = ev.getRawY(); 3232 break; 3233 3234 case MotionEvent.ACTION_UP: 3235 if (!offsetHasBeenChanged()) { 3236 final float deltaX = mDownPositionX - ev.getRawX(); 3237 final float deltaY = mDownPositionY - ev.getRawY(); 3238 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3239 3240 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 3241 mTextView.getContext()); 3242 final int touchSlop = viewConfiguration.getScaledTouchSlop(); 3243 3244 if (distanceSquared < touchSlop * touchSlop) { 3245 if (mActionPopupWindow != null && mActionPopupWindow.isShowing()) { 3246 // Tapping on the handle dismisses the displayed action popup 3247 mActionPopupWindow.hide(); 3248 } else { 3249 showWithActionPopup(); 3250 } 3251 } 3252 } 3253 hideAfterDelay(); 3254 break; 3255 3256 case MotionEvent.ACTION_CANCEL: 3257 hideAfterDelay(); 3258 break; 3259 3260 default: 3261 break; 3262 } 3263 3264 return result; 3265 } 3266 3267 @Override 3268 public int getCurrentCursorOffset() { 3269 return mTextView.getSelectionStart(); 3270 } 3271 3272 @Override 3273 public void updateSelection(int offset) { 3274 Selection.setSelection((Spannable) mTextView.getText(), offset); 3275 } 3276 3277 @Override 3278 public void updatePosition(float x, float y) { 3279 positionAtCursorOffset(mTextView.getOffsetForPosition(x, y), false); 3280 } 3281 3282 @Override 3283 void onHandleMoved() { 3284 super.onHandleMoved(); 3285 removeHiderCallback(); 3286 } 3287 3288 @Override 3289 public void onDetached() { 3290 super.onDetached(); 3291 removeHiderCallback(); 3292 } 3293 } 3294 3295 private class SelectionStartHandleView extends HandleView { 3296 3297 public SelectionStartHandleView(Drawable drawableLtr, Drawable drawableRtl) { 3298 super(drawableLtr, drawableRtl); 3299 } 3300 3301 @Override 3302 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3303 if (isRtlRun) { 3304 return drawable.getIntrinsicWidth() / 4; 3305 } else { 3306 return (drawable.getIntrinsicWidth() * 3) / 4; 3307 } 3308 } 3309 3310 @Override 3311 public int getCurrentCursorOffset() { 3312 return mTextView.getSelectionStart(); 3313 } 3314 3315 @Override 3316 public void updateSelection(int offset) { 3317 Selection.setSelection((Spannable) mTextView.getText(), offset, 3318 mTextView.getSelectionEnd()); 3319 updateDrawable(); 3320 } 3321 3322 @Override 3323 public void updatePosition(float x, float y) { 3324 int offset = mTextView.getOffsetForPosition(x, y); 3325 3326 // Handles can not cross and selection is at least one character 3327 final int selectionEnd = mTextView.getSelectionEnd(); 3328 if (offset >= selectionEnd) offset = Math.max(0, selectionEnd - 1); 3329 3330 positionAtCursorOffset(offset, false); 3331 } 3332 3333 public ActionPopupWindow getActionPopupWindow() { 3334 return mActionPopupWindow; 3335 } 3336 } 3337 3338 private class SelectionEndHandleView extends HandleView { 3339 3340 public SelectionEndHandleView(Drawable drawableLtr, Drawable drawableRtl) { 3341 super(drawableLtr, drawableRtl); 3342 } 3343 3344 @Override 3345 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3346 if (isRtlRun) { 3347 return (drawable.getIntrinsicWidth() * 3) / 4; 3348 } else { 3349 return drawable.getIntrinsicWidth() / 4; 3350 } 3351 } 3352 3353 @Override 3354 public int getCurrentCursorOffset() { 3355 return mTextView.getSelectionEnd(); 3356 } 3357 3358 @Override 3359 public void updateSelection(int offset) { 3360 Selection.setSelection((Spannable) mTextView.getText(), 3361 mTextView.getSelectionStart(), offset); 3362 updateDrawable(); 3363 } 3364 3365 @Override 3366 public void updatePosition(float x, float y) { 3367 int offset = mTextView.getOffsetForPosition(x, y); 3368 3369 // Handles can not cross and selection is at least one character 3370 final int selectionStart = mTextView.getSelectionStart(); 3371 if (offset <= selectionStart) { 3372 offset = Math.min(selectionStart + 1, mTextView.getText().length()); 3373 } 3374 3375 positionAtCursorOffset(offset, false); 3376 } 3377 3378 public void setActionPopupWindow(ActionPopupWindow actionPopupWindow) { 3379 mActionPopupWindow = actionPopupWindow; 3380 } 3381 } 3382 3383 /** 3384 * A CursorController instance can be used to control a cursor in the text. 3385 */ 3386 private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { 3387 /** 3388 * Makes the cursor controller visible on screen. 3389 * See also {@link #hide()}. 3390 */ 3391 public void show(); 3392 3393 /** 3394 * Hide the cursor controller from screen. 3395 * See also {@link #show()}. 3396 */ 3397 public void hide(); 3398 3399 /** 3400 * Called when the view is detached from window. Perform house keeping task, such as 3401 * stopping Runnable thread that would otherwise keep a reference on the context, thus 3402 * preventing the activity from being recycled. 3403 */ 3404 public void onDetached(); 3405 } 3406 3407 private class InsertionPointCursorController implements CursorController { 3408 private InsertionHandleView mHandle; 3409 3410 public void show() { 3411 getHandle().show(); 3412 } 3413 3414 public void showWithActionPopup() { 3415 getHandle().showWithActionPopup(); 3416 } 3417 3418 public void hide() { 3419 if (mHandle != null) { 3420 mHandle.hide(); 3421 } 3422 } 3423 3424 public void onTouchModeChanged(boolean isInTouchMode) { 3425 if (!isInTouchMode) { 3426 hide(); 3427 } 3428 } 3429 3430 private InsertionHandleView getHandle() { 3431 if (mSelectHandleCenter == null) { 3432 mSelectHandleCenter = mTextView.getResources().getDrawable( 3433 mTextView.mTextSelectHandleRes); 3434 } 3435 if (mHandle == null) { 3436 mHandle = new InsertionHandleView(mSelectHandleCenter); 3437 } 3438 return mHandle; 3439 } 3440 3441 @Override 3442 public void onDetached() { 3443 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 3444 observer.removeOnTouchModeChangeListener(this); 3445 3446 if (mHandle != null) mHandle.onDetached(); 3447 } 3448 } 3449 3450 class SelectionModifierCursorController implements CursorController { 3451 private static final int DELAY_BEFORE_REPLACE_ACTION = 200; // milliseconds 3452 // The cursor controller handles, lazily created when shown. 3453 private SelectionStartHandleView mStartHandle; 3454 private SelectionEndHandleView mEndHandle; 3455 // The offsets of that last touch down event. Remembered to start selection there. 3456 private int mMinTouchOffset, mMaxTouchOffset; 3457 3458 // Double tap detection 3459 private long mPreviousTapUpTime = 0; 3460 private float mDownPositionX, mDownPositionY; 3461 private boolean mGestureStayedInTapRegion; 3462 3463 SelectionModifierCursorController() { 3464 resetTouchOffsets(); 3465 } 3466 3467 public void show() { 3468 if (mTextView.isInBatchEditMode()) { 3469 return; 3470 } 3471 initDrawables(); 3472 initHandles(); 3473 hideInsertionPointCursorController(); 3474 } 3475 3476 private void initDrawables() { 3477 if (mSelectHandleLeft == null) { 3478 mSelectHandleLeft = mTextView.getContext().getResources().getDrawable( 3479 mTextView.mTextSelectHandleLeftRes); 3480 } 3481 if (mSelectHandleRight == null) { 3482 mSelectHandleRight = mTextView.getContext().getResources().getDrawable( 3483 mTextView.mTextSelectHandleRightRes); 3484 } 3485 } 3486 3487 private void initHandles() { 3488 // Lazy object creation has to be done before updatePosition() is called. 3489 if (mStartHandle == null) { 3490 mStartHandle = new SelectionStartHandleView(mSelectHandleLeft, mSelectHandleRight); 3491 } 3492 if (mEndHandle == null) { 3493 mEndHandle = new SelectionEndHandleView(mSelectHandleRight, mSelectHandleLeft); 3494 } 3495 3496 mStartHandle.show(); 3497 mEndHandle.show(); 3498 3499 // Make sure both left and right handles share the same ActionPopupWindow (so that 3500 // moving any of the handles hides the action popup). 3501 mStartHandle.showActionPopupWindow(DELAY_BEFORE_REPLACE_ACTION); 3502 mEndHandle.setActionPopupWindow(mStartHandle.getActionPopupWindow()); 3503 3504 hideInsertionPointCursorController(); 3505 } 3506 3507 public void hide() { 3508 if (mStartHandle != null) mStartHandle.hide(); 3509 if (mEndHandle != null) mEndHandle.hide(); 3510 } 3511 3512 public void onTouchEvent(MotionEvent event) { 3513 // This is done even when the View does not have focus, so that long presses can start 3514 // selection and tap can move cursor from this tap position. 3515 switch (event.getActionMasked()) { 3516 case MotionEvent.ACTION_DOWN: 3517 final float x = event.getX(); 3518 final float y = event.getY(); 3519 3520 // Remember finger down position, to be able to start selection from there 3521 mMinTouchOffset = mMaxTouchOffset = mTextView.getOffsetForPosition(x, y); 3522 3523 // Double tap detection 3524 if (mGestureStayedInTapRegion) { 3525 long duration = SystemClock.uptimeMillis() - mPreviousTapUpTime; 3526 if (duration <= ViewConfiguration.getDoubleTapTimeout()) { 3527 final float deltaX = x - mDownPositionX; 3528 final float deltaY = y - mDownPositionY; 3529 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3530 3531 ViewConfiguration viewConfiguration = ViewConfiguration.get( 3532 mTextView.getContext()); 3533 int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop(); 3534 boolean stayedInArea = distanceSquared < doubleTapSlop * doubleTapSlop; 3535 3536 if (stayedInArea && isPositionOnText(x, y)) { 3537 startSelectionActionMode(); 3538 mDiscardNextActionUp = true; 3539 } 3540 } 3541 } 3542 3543 mDownPositionX = x; 3544 mDownPositionY = y; 3545 mGestureStayedInTapRegion = true; 3546 break; 3547 3548 case MotionEvent.ACTION_POINTER_DOWN: 3549 case MotionEvent.ACTION_POINTER_UP: 3550 // Handle multi-point gestures. Keep min and max offset positions. 3551 // Only activated for devices that correctly handle multi-touch. 3552 if (mTextView.getContext().getPackageManager().hasSystemFeature( 3553 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { 3554 updateMinAndMaxOffsets(event); 3555 } 3556 break; 3557 3558 case MotionEvent.ACTION_MOVE: 3559 if (mGestureStayedInTapRegion) { 3560 final float deltaX = event.getX() - mDownPositionX; 3561 final float deltaY = event.getY() - mDownPositionY; 3562 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3563 3564 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 3565 mTextView.getContext()); 3566 int doubleTapTouchSlop = viewConfiguration.getScaledDoubleTapTouchSlop(); 3567 3568 if (distanceSquared > doubleTapTouchSlop * doubleTapTouchSlop) { 3569 mGestureStayedInTapRegion = false; 3570 } 3571 } 3572 break; 3573 3574 case MotionEvent.ACTION_UP: 3575 mPreviousTapUpTime = SystemClock.uptimeMillis(); 3576 break; 3577 } 3578 } 3579 3580 /** 3581 * @param event 3582 */ 3583 private void updateMinAndMaxOffsets(MotionEvent event) { 3584 int pointerCount = event.getPointerCount(); 3585 for (int index = 0; index < pointerCount; index++) { 3586 int offset = mTextView.getOffsetForPosition(event.getX(index), event.getY(index)); 3587 if (offset < mMinTouchOffset) mMinTouchOffset = offset; 3588 if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; 3589 } 3590 } 3591 3592 public int getMinTouchOffset() { 3593 return mMinTouchOffset; 3594 } 3595 3596 public int getMaxTouchOffset() { 3597 return mMaxTouchOffset; 3598 } 3599 3600 public void resetTouchOffsets() { 3601 mMinTouchOffset = mMaxTouchOffset = -1; 3602 } 3603 3604 /** 3605 * @return true iff this controller is currently used to move the selection start. 3606 */ 3607 public boolean isSelectionStartDragged() { 3608 return mStartHandle != null && mStartHandle.isDragging(); 3609 } 3610 3611 public void onTouchModeChanged(boolean isInTouchMode) { 3612 if (!isInTouchMode) { 3613 hide(); 3614 } 3615 } 3616 3617 @Override 3618 public void onDetached() { 3619 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 3620 observer.removeOnTouchModeChangeListener(this); 3621 3622 if (mStartHandle != null) mStartHandle.onDetached(); 3623 if (mEndHandle != null) mEndHandle.onDetached(); 3624 } 3625 } 3626 3627 private class CorrectionHighlighter { 3628 private final Path mPath = new Path(); 3629 private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 3630 private int mStart, mEnd; 3631 private long mFadingStartTime; 3632 private RectF mTempRectF; 3633 private final static int FADE_OUT_DURATION = 400; 3634 3635 public CorrectionHighlighter() { 3636 mPaint.setCompatibilityScaling(mTextView.getResources().getCompatibilityInfo(). 3637 applicationScale); 3638 mPaint.setStyle(Paint.Style.FILL); 3639 } 3640 3641 public void highlight(CorrectionInfo info) { 3642 mStart = info.getOffset(); 3643 mEnd = mStart + info.getNewText().length(); 3644 mFadingStartTime = SystemClock.uptimeMillis(); 3645 3646 if (mStart < 0 || mEnd < 0) { 3647 stopAnimation(); 3648 } 3649 } 3650 3651 public void draw(Canvas canvas, int cursorOffsetVertical) { 3652 if (updatePath() && updatePaint()) { 3653 if (cursorOffsetVertical != 0) { 3654 canvas.translate(0, cursorOffsetVertical); 3655 } 3656 3657 canvas.drawPath(mPath, mPaint); 3658 3659 if (cursorOffsetVertical != 0) { 3660 canvas.translate(0, -cursorOffsetVertical); 3661 } 3662 invalidate(true); // TODO invalidate cursor region only 3663 } else { 3664 stopAnimation(); 3665 invalidate(false); // TODO invalidate cursor region only 3666 } 3667 } 3668 3669 private boolean updatePaint() { 3670 final long duration = SystemClock.uptimeMillis() - mFadingStartTime; 3671 if (duration > FADE_OUT_DURATION) return false; 3672 3673 final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; 3674 final int highlightColorAlpha = Color.alpha(mTextView.mHighlightColor); 3675 final int color = (mTextView.mHighlightColor & 0x00FFFFFF) + 3676 ((int) (highlightColorAlpha * coef) << 24); 3677 mPaint.setColor(color); 3678 return true; 3679 } 3680 3681 private boolean updatePath() { 3682 final Layout layout = mTextView.getLayout(); 3683 if (layout == null) return false; 3684 3685 // Update in case text is edited while the animation is run 3686 final int length = mTextView.getText().length(); 3687 int start = Math.min(length, mStart); 3688 int end = Math.min(length, mEnd); 3689 3690 mPath.reset(); 3691 layout.getSelectionPath(start, end, mPath); 3692 return true; 3693 } 3694 3695 private void invalidate(boolean delayed) { 3696 if (mTextView.getLayout() == null) return; 3697 3698 if (mTempRectF == null) mTempRectF = new RectF(); 3699 mPath.computeBounds(mTempRectF, false); 3700 3701 int left = mTextView.getCompoundPaddingLeft(); 3702 int top = mTextView.getExtendedPaddingTop() + mTextView.getVerticalOffset(true); 3703 3704 if (delayed) { 3705 mTextView.postInvalidateOnAnimation( 3706 left + (int) mTempRectF.left, top + (int) mTempRectF.top, 3707 left + (int) mTempRectF.right, top + (int) mTempRectF.bottom); 3708 } else { 3709 mTextView.postInvalidate((int) mTempRectF.left, (int) mTempRectF.top, 3710 (int) mTempRectF.right, (int) mTempRectF.bottom); 3711 } 3712 } 3713 3714 private void stopAnimation() { 3715 Editor.this.mCorrectionHighlighter = null; 3716 } 3717 } 3718 3719 private static class ErrorPopup extends PopupWindow { 3720 private boolean mAbove = false; 3721 private final TextView mView; 3722 private int mPopupInlineErrorBackgroundId = 0; 3723 private int mPopupInlineErrorAboveBackgroundId = 0; 3724 3725 ErrorPopup(TextView v, int width, int height) { 3726 super(v, width, height); 3727 mView = v; 3728 // Make sure the TextView has a background set as it will be used the first time it is 3729 // shown and positionned. Initialized with below background, which should have 3730 // dimensions identical to the above version for this to work (and is more likely). 3731 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 3732 com.android.internal.R.styleable.Theme_errorMessageBackground); 3733 mView.setBackgroundResource(mPopupInlineErrorBackgroundId); 3734 } 3735 3736 void fixDirection(boolean above) { 3737 mAbove = above; 3738 3739 if (above) { 3740 mPopupInlineErrorAboveBackgroundId = 3741 getResourceId(mPopupInlineErrorAboveBackgroundId, 3742 com.android.internal.R.styleable.Theme_errorMessageAboveBackground); 3743 } else { 3744 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 3745 com.android.internal.R.styleable.Theme_errorMessageBackground); 3746 } 3747 3748 mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId : 3749 mPopupInlineErrorBackgroundId); 3750 } 3751 3752 private int getResourceId(int currentId, int index) { 3753 if (currentId == 0) { 3754 TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( 3755 R.styleable.Theme); 3756 currentId = styledAttributes.getResourceId(index, 0); 3757 styledAttributes.recycle(); 3758 } 3759 return currentId; 3760 } 3761 3762 @Override 3763 public void update(int x, int y, int w, int h, boolean force) { 3764 super.update(x, y, w, h, force); 3765 3766 boolean above = isAboveAnchor(); 3767 if (above != mAbove) { 3768 fixDirection(above); 3769 } 3770 } 3771 } 3772 3773 static class InputContentType { 3774 int imeOptions = EditorInfo.IME_NULL; 3775 String privateImeOptions; 3776 CharSequence imeActionLabel; 3777 int imeActionId; 3778 Bundle extras; 3779 OnEditorActionListener onEditorActionListener; 3780 boolean enterDown; 3781 } 3782 3783 static class InputMethodState { 3784 Rect mCursorRectInWindow = new Rect(); 3785 RectF mTmpRectF = new RectF(); 3786 float[] mTmpOffset = new float[2]; 3787 ExtractedTextRequest mExtractedTextRequest; 3788 final ExtractedText mExtractedText = new ExtractedText(); 3789 int mBatchEditNesting; 3790 boolean mCursorChanged; 3791 boolean mSelectionModeChanged; 3792 boolean mContentChanged; 3793 int mChangedStart, mChangedEnd, mChangedDelta; 3794 } 3795 } 3796