Editor.java revision ebc86af1dc186c77f723c8970951e8ff00b4866b
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 17package android.widget; 18 19import android.R; 20import android.content.ClipData; 21import android.content.ClipData.Item; 22import android.content.Context; 23import android.content.Intent; 24import android.content.pm.PackageManager; 25import android.content.res.TypedArray; 26import android.graphics.Canvas; 27import android.graphics.Color; 28import android.graphics.Paint; 29import android.graphics.Path; 30import android.graphics.Rect; 31import android.graphics.RectF; 32import android.graphics.drawable.Drawable; 33import android.inputmethodservice.ExtractEditText; 34import android.os.Bundle; 35import android.os.Handler; 36import android.os.SystemClock; 37import android.provider.Settings; 38import android.text.DynamicLayout; 39import android.text.Editable; 40import android.text.InputType; 41import android.text.Layout; 42import android.text.ParcelableSpan; 43import android.text.Selection; 44import android.text.SpanWatcher; 45import android.text.Spannable; 46import android.text.SpannableStringBuilder; 47import android.text.Spanned; 48import android.text.StaticLayout; 49import android.text.TextUtils; 50import android.text.TextWatcher; 51import android.text.method.KeyListener; 52import android.text.method.MetaKeyKeyListener; 53import android.text.method.MovementMethod; 54import android.text.method.PasswordTransformationMethod; 55import android.text.method.WordIterator; 56import android.text.style.EasyEditSpan; 57import android.text.style.SuggestionRangeSpan; 58import android.text.style.SuggestionSpan; 59import android.text.style.TextAppearanceSpan; 60import android.text.style.URLSpan; 61import android.util.DisplayMetrics; 62import android.util.Log; 63import android.view.ActionMode; 64import android.view.ActionMode.Callback; 65import android.view.DisplayList; 66import android.view.DragEvent; 67import android.view.Gravity; 68import android.view.HardwareCanvas; 69import android.view.LayoutInflater; 70import android.view.Menu; 71import android.view.MenuItem; 72import android.view.MotionEvent; 73import android.view.View; 74import android.view.ViewConfiguration; 75import android.view.ViewGroup; 76import android.view.View.DragShadowBuilder; 77import android.view.View.OnClickListener; 78import android.view.ViewGroup.LayoutParams; 79import android.view.ViewParent; 80import android.view.ViewTreeObserver; 81import android.view.WindowManager; 82import android.view.inputmethod.CorrectionInfo; 83import android.view.inputmethod.EditorInfo; 84import android.view.inputmethod.ExtractedText; 85import android.view.inputmethod.ExtractedTextRequest; 86import android.view.inputmethod.InputConnection; 87import android.view.inputmethod.InputMethodManager; 88import android.widget.AdapterView.OnItemClickListener; 89import android.widget.TextView.Drawables; 90import android.widget.TextView.OnEditorActionListener; 91 92import com.android.internal.util.ArrayUtils; 93import com.android.internal.widget.EditableInputConnection; 94 95import java.text.BreakIterator; 96import java.util.Arrays; 97import java.util.Comparator; 98import java.util.HashMap; 99 100/** 101 * Helper class used by TextView to handle editable text views. 102 * 103 * @hide 104 */ 105public class Editor { 106 static final int BLINK = 500; 107 private static final float[] TEMP_POSITION = new float[2]; 108 private static int DRAG_SHADOW_MAX_TEXT_LENGTH = 20; 109 110 // Cursor Controllers. 111 InsertionPointCursorController mInsertionPointCursorController; 112 SelectionModifierCursorController mSelectionModifierCursorController; 113 ActionMode mSelectionActionMode; 114 boolean mInsertionControllerEnabled; 115 boolean mSelectionControllerEnabled; 116 117 // Used to highlight a word when it is corrected by the IME 118 CorrectionHighlighter mCorrectionHighlighter; 119 120 InputContentType mInputContentType; 121 InputMethodState mInputMethodState; 122 123 DisplayList[] mTextDisplayLists; 124 125 boolean mFrozenWithFocus; 126 boolean mSelectionMoved; 127 boolean mTouchFocusSelected; 128 129 KeyListener mKeyListener; 130 int mInputType = EditorInfo.TYPE_NULL; 131 132 boolean mDiscardNextActionUp; 133 boolean mIgnoreActionUpEvent; 134 135 long mShowCursor; 136 Blink mBlink; 137 138 boolean mCursorVisible = true; 139 boolean mSelectAllOnFocus; 140 boolean mTextIsSelectable; 141 142 CharSequence mError; 143 boolean mErrorWasChanged; 144 ErrorPopup mErrorPopup; 145 /** 146 * This flag is set if the TextView tries to display an error before it 147 * is attached to the window (so its position is still unknown). 148 * It causes the error to be shown later, when onAttachedToWindow() 149 * is called. 150 */ 151 boolean mShowErrorAfterAttach; 152 153 boolean mInBatchEditControllers; 154 155 SuggestionsPopupWindow mSuggestionsPopupWindow; 156 SuggestionRangeSpan mSuggestionRangeSpan; 157 Runnable mShowSuggestionRunnable; 158 159 final Drawable[] mCursorDrawable = new Drawable[2]; 160 int mCursorCount; // Current number of used mCursorDrawable: 0 (resource=0), 1 or 2 (split) 161 162 private Drawable mSelectHandleLeft; 163 private Drawable mSelectHandleRight; 164 private Drawable mSelectHandleCenter; 165 166 // Global listener that detects changes in the global position of the TextView 167 private PositionListener mPositionListener; 168 169 float mLastDownPositionX, mLastDownPositionY; 170 Callback mCustomSelectionActionModeCallback; 171 172 // Set when this TextView gained focus with some text selected. Will start selection mode. 173 boolean mCreatedWithASelection; 174 175 private EasyEditSpanController mEasyEditSpanController; 176 177 WordIterator mWordIterator; 178 SpellChecker mSpellChecker; 179 180 private Rect mTempRect; 181 182 private TextView mTextView; 183 184 Editor(TextView textView) { 185 mTextView = textView; 186 mEasyEditSpanController = new EasyEditSpanController(); 187 mTextView.addTextChangedListener(mEasyEditSpanController); 188 } 189 190 void onAttachedToWindow() { 191 if (mShowErrorAfterAttach) { 192 showError(); 193 mShowErrorAfterAttach = false; 194 } 195 196 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 197 // No need to create the controller. 198 // The get method will add the listener on controller creation. 199 if (mInsertionPointCursorController != null) { 200 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 201 } 202 if (mSelectionModifierCursorController != null) { 203 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 204 } 205 updateSpellCheckSpans(0, mTextView.getText().length(), 206 true /* create the spell checker if needed */); 207 } 208 209 void onDetachedFromWindow() { 210 if (mError != null) { 211 hideError(); 212 } 213 214 if (mBlink != null) { 215 mBlink.removeCallbacks(mBlink); 216 } 217 218 if (mInsertionPointCursorController != null) { 219 mInsertionPointCursorController.onDetached(); 220 } 221 222 if (mSelectionModifierCursorController != null) { 223 mSelectionModifierCursorController.onDetached(); 224 } 225 226 if (mShowSuggestionRunnable != null) { 227 mTextView.removeCallbacks(mShowSuggestionRunnable); 228 } 229 230 invalidateTextDisplayList(); 231 232 if (mSpellChecker != null) { 233 mSpellChecker.closeSession(); 234 // Forces the creation of a new SpellChecker next time this window is created. 235 // Will handle the cases where the settings has been changed in the meantime. 236 mSpellChecker = null; 237 } 238 239 hideControllers(); 240 } 241 242 private void showError() { 243 if (mTextView.getWindowToken() == null) { 244 mShowErrorAfterAttach = true; 245 return; 246 } 247 248 if (mErrorPopup == null) { 249 LayoutInflater inflater = LayoutInflater.from(mTextView.getContext()); 250 final TextView err = (TextView) inflater.inflate( 251 com.android.internal.R.layout.textview_hint, null); 252 253 final float scale = mTextView.getResources().getDisplayMetrics().density; 254 mErrorPopup = new ErrorPopup(err, (int)(200 * scale + 0.5f), (int)(50 * scale + 0.5f)); 255 mErrorPopup.setFocusable(false); 256 // The user is entering text, so the input method is needed. We 257 // don't want the popup to be displayed on top of it. 258 mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); 259 } 260 261 TextView tv = (TextView) mErrorPopup.getContentView(); 262 chooseSize(mErrorPopup, mError, tv); 263 tv.setText(mError); 264 265 mErrorPopup.showAsDropDown(mTextView, getErrorX(), getErrorY()); 266 mErrorPopup.fixDirection(mErrorPopup.isAboveAnchor()); 267 } 268 269 public void setError(CharSequence error, Drawable icon) { 270 mError = TextUtils.stringOrSpannedString(error); 271 mErrorWasChanged = true; 272 final Drawables dr = mTextView.mDrawables; 273 if (dr != null) { 274 switch (mTextView.getResolvedLayoutDirection()) { 275 default: 276 case View.LAYOUT_DIRECTION_LTR: 277 mTextView.setCompoundDrawables(dr.mDrawableLeft, dr.mDrawableTop, icon, 278 dr.mDrawableBottom); 279 break; 280 case View.LAYOUT_DIRECTION_RTL: 281 mTextView.setCompoundDrawables(icon, dr.mDrawableTop, dr.mDrawableRight, 282 dr.mDrawableBottom); 283 break; 284 } 285 } else { 286 mTextView.setCompoundDrawables(null, null, icon, null); 287 } 288 289 if (mError == null) { 290 if (mErrorPopup != null) { 291 if (mErrorPopup.isShowing()) { 292 mErrorPopup.dismiss(); 293 } 294 295 mErrorPopup = null; 296 } 297 } else { 298 if (mTextView.isFocused()) { 299 showError(); 300 } 301 } 302 } 303 304 private void hideError() { 305 if (mErrorPopup != null) { 306 if (mErrorPopup.isShowing()) { 307 mErrorPopup.dismiss(); 308 } 309 } 310 311 mShowErrorAfterAttach = false; 312 } 313 314 /** 315 * Returns the Y offset to make the pointy top of the error point 316 * at the middle of the error icon. 317 */ 318 private int getErrorX() { 319 /* 320 * The "25" is the distance between the point and the right edge 321 * of the background 322 */ 323 final float scale = mTextView.getResources().getDisplayMetrics().density; 324 325 final Drawables dr = mTextView.mDrawables; 326 return mTextView.getWidth() - mErrorPopup.getWidth() - mTextView.getPaddingRight() - 327 (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f); 328 } 329 330 /** 331 * Returns the Y offset to make the pointy top of the error point 332 * at the bottom of the error icon. 333 */ 334 private int getErrorY() { 335 /* 336 * Compound, not extended, because the icon is not clipped 337 * if the text height is smaller. 338 */ 339 final int compoundPaddingTop = mTextView.getCompoundPaddingTop(); 340 int vspace = mTextView.getBottom() - mTextView.getTop() - 341 mTextView.getCompoundPaddingBottom() - compoundPaddingTop; 342 343 final Drawables dr = mTextView.mDrawables; 344 int icontop = compoundPaddingTop + 345 (vspace - (dr != null ? dr.mDrawableHeightRight : 0)) / 2; 346 347 /* 348 * The "2" is the distance between the point and the top edge 349 * of the background. 350 */ 351 final float scale = mTextView.getResources().getDisplayMetrics().density; 352 return icontop + (dr != null ? dr.mDrawableHeightRight : 0) - mTextView.getHeight() - 353 (int) (2 * scale + 0.5f); 354 } 355 356 void createInputContentTypeIfNeeded() { 357 if (mInputContentType == null) { 358 mInputContentType = new InputContentType(); 359 } 360 } 361 362 void createInputMethodStateIfNeeded() { 363 if (mInputMethodState == null) { 364 mInputMethodState = new InputMethodState(); 365 } 366 } 367 368 boolean isCursorVisible() { 369 // The default value is true, even when there is no associated Editor 370 return mCursorVisible && mTextView.isTextEditable(); 371 } 372 373 void prepareCursorControllers() { 374 boolean windowSupportsHandles = false; 375 376 ViewGroup.LayoutParams params = mTextView.getRootView().getLayoutParams(); 377 if (params instanceof WindowManager.LayoutParams) { 378 WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params; 379 windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW 380 || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW; 381 } 382 383 boolean enabled = windowSupportsHandles && mTextView.getLayout() != null; 384 mInsertionControllerEnabled = enabled && isCursorVisible(); 385 mSelectionControllerEnabled = enabled && mTextView.textCanBeSelected(); 386 387 if (!mInsertionControllerEnabled) { 388 hideInsertionPointCursorController(); 389 if (mInsertionPointCursorController != null) { 390 mInsertionPointCursorController.onDetached(); 391 mInsertionPointCursorController = null; 392 } 393 } 394 395 if (!mSelectionControllerEnabled) { 396 stopSelectionActionMode(); 397 if (mSelectionModifierCursorController != null) { 398 mSelectionModifierCursorController.onDetached(); 399 mSelectionModifierCursorController = null; 400 } 401 } 402 } 403 404 private void hideInsertionPointCursorController() { 405 if (mInsertionPointCursorController != null) { 406 mInsertionPointCursorController.hide(); 407 } 408 } 409 410 /** 411 * Hides the insertion controller and stops text selection mode, hiding the selection controller 412 */ 413 void hideControllers() { 414 hideCursorControllers(); 415 hideSpanControllers(); 416 } 417 418 private void hideSpanControllers() { 419 if (mEasyEditSpanController != null) { 420 mEasyEditSpanController.hide(); 421 } 422 } 423 424 private void hideCursorControllers() { 425 if (mSuggestionsPopupWindow != null && !mSuggestionsPopupWindow.isShowingUp()) { 426 // Should be done before hide insertion point controller since it triggers a show of it 427 mSuggestionsPopupWindow.hide(); 428 } 429 hideInsertionPointCursorController(); 430 stopSelectionActionMode(); 431 } 432 433 /** 434 * Create new SpellCheckSpans on the modified region. 435 */ 436 private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) { 437 if (mTextView.isTextEditable() && mTextView.isSuggestionsEnabled() && 438 !(mTextView instanceof ExtractEditText)) { 439 if (mSpellChecker == null && createSpellChecker) { 440 mSpellChecker = new SpellChecker(mTextView); 441 } 442 if (mSpellChecker != null) { 443 mSpellChecker.spellCheck(start, end); 444 } 445 } 446 } 447 448 void onScreenStateChanged(int screenState) { 449 switch (screenState) { 450 case View.SCREEN_STATE_ON: 451 resumeBlink(); 452 break; 453 case View.SCREEN_STATE_OFF: 454 suspendBlink(); 455 break; 456 } 457 } 458 459 private void suspendBlink() { 460 if (mBlink != null) { 461 mBlink.cancel(); 462 } 463 } 464 465 private void resumeBlink() { 466 if (mBlink != null) { 467 mBlink.uncancel(); 468 makeBlink(); 469 } 470 } 471 472 void adjustInputType(boolean password, boolean passwordInputType, 473 boolean webPasswordInputType, boolean numberPasswordInputType) { 474 // mInputType has been set from inputType, possibly modified by mInputMethod. 475 // Specialize mInputType to [web]password if we have a text class and the original input 476 // type was a password. 477 if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 478 if (password || passwordInputType) { 479 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 480 | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD; 481 } 482 if (webPasswordInputType) { 483 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 484 | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 485 } 486 } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) { 487 if (numberPasswordInputType) { 488 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 489 | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD; 490 } 491 } 492 } 493 494 private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) { 495 int wid = tv.getPaddingLeft() + tv.getPaddingRight(); 496 int ht = tv.getPaddingTop() + tv.getPaddingBottom(); 497 498 int defaultWidthInPixels = mTextView.getResources().getDimensionPixelSize( 499 com.android.internal.R.dimen.textview_error_popup_default_width); 500 Layout l = new StaticLayout(text, tv.getPaint(), defaultWidthInPixels, 501 Layout.Alignment.ALIGN_NORMAL, 1, 0, true); 502 float max = 0; 503 for (int i = 0; i < l.getLineCount(); i++) { 504 max = Math.max(max, l.getLineWidth(i)); 505 } 506 507 /* 508 * Now set the popup size to be big enough for the text plus the border capped 509 * to DEFAULT_MAX_POPUP_WIDTH 510 */ 511 pop.setWidth(wid + (int) Math.ceil(max)); 512 pop.setHeight(ht + l.getHeight()); 513 } 514 515 void setFrame() { 516 if (mErrorPopup != null) { 517 TextView tv = (TextView) mErrorPopup.getContentView(); 518 chooseSize(mErrorPopup, mError, tv); 519 mErrorPopup.update(mTextView, getErrorX(), getErrorY(), 520 mErrorPopup.getWidth(), mErrorPopup.getHeight()); 521 } 522 } 523 524 /** 525 * Unlike {@link TextView#textCanBeSelected()}, this method is based on the <i>current</i> state 526 * of the TextView. textCanBeSelected() has to be true (this is one of the conditions to have 527 * a selection controller (see {@link #prepareCursorControllers()}), but this is not sufficient. 528 */ 529 private boolean canSelectText() { 530 return hasSelectionController() && mTextView.getText().length() != 0; 531 } 532 533 /** 534 * It would be better to rely on the input type for everything. A password inputType should have 535 * a password transformation. We should hence use isPasswordInputType instead of this method. 536 * 537 * We should: 538 * - Call setInputType in setKeyListener instead of changing the input type directly (which 539 * would install the correct transformation). 540 * - Refuse the installation of a non-password transformation in setTransformation if the input 541 * type is password. 542 * 543 * However, this is like this for legacy reasons and we cannot break existing apps. This method 544 * is useful since it matches what the user can see (obfuscated text or not). 545 * 546 * @return true if the current transformation method is of the password type. 547 */ 548 private boolean hasPasswordTransformationMethod() { 549 return mTextView.getTransformationMethod() instanceof PasswordTransformationMethod; 550 } 551 552 /** 553 * Adjusts selection to the word under last touch offset. 554 * Return true if the operation was successfully performed. 555 */ 556 private boolean selectCurrentWord() { 557 if (!canSelectText()) { 558 return false; 559 } 560 561 if (hasPasswordTransformationMethod()) { 562 // Always select all on a password field. 563 // Cut/copy menu entries are not available for passwords, but being able to select all 564 // is however useful to delete or paste to replace the entire content. 565 return mTextView.selectAllText(); 566 } 567 568 int inputType = mTextView.getInputType(); 569 int klass = inputType & InputType.TYPE_MASK_CLASS; 570 int variation = inputType & InputType.TYPE_MASK_VARIATION; 571 572 // Specific text field types: select the entire text for these 573 if (klass == InputType.TYPE_CLASS_NUMBER || 574 klass == InputType.TYPE_CLASS_PHONE || 575 klass == InputType.TYPE_CLASS_DATETIME || 576 variation == InputType.TYPE_TEXT_VARIATION_URI || 577 variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS || 578 variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS || 579 variation == InputType.TYPE_TEXT_VARIATION_FILTER) { 580 return mTextView.selectAllText(); 581 } 582 583 long lastTouchOffsets = getLastTouchOffsets(); 584 final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 585 final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 586 587 // Safety check in case standard touch event handling has been bypassed 588 if (minOffset < 0 || minOffset >= mTextView.getText().length()) return false; 589 if (maxOffset < 0 || maxOffset >= mTextView.getText().length()) return false; 590 591 int selectionStart, selectionEnd; 592 593 // If a URLSpan (web address, email, phone...) is found at that position, select it. 594 URLSpan[] urlSpans = ((Spanned) mTextView.getText()). 595 getSpans(minOffset, maxOffset, URLSpan.class); 596 if (urlSpans.length >= 1) { 597 URLSpan urlSpan = urlSpans[0]; 598 selectionStart = ((Spanned) mTextView.getText()).getSpanStart(urlSpan); 599 selectionEnd = ((Spanned) mTextView.getText()).getSpanEnd(urlSpan); 600 } else { 601 final WordIterator wordIterator = getWordIterator(); 602 wordIterator.setCharSequence(mTextView.getText(), minOffset, maxOffset); 603 604 selectionStart = wordIterator.getBeginning(minOffset); 605 selectionEnd = wordIterator.getEnd(maxOffset); 606 607 if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE || 608 selectionStart == selectionEnd) { 609 // Possible when the word iterator does not properly handle the text's language 610 long range = getCharRange(minOffset); 611 selectionStart = TextUtils.unpackRangeStartFromLong(range); 612 selectionEnd = TextUtils.unpackRangeEndFromLong(range); 613 } 614 } 615 616 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 617 return selectionEnd > selectionStart; 618 } 619 620 void onLocaleChanged() { 621 // Will be re-created on demand in getWordIterator with the proper new locale 622 mWordIterator = null; 623 } 624 625 /** 626 * @hide 627 */ 628 public WordIterator getWordIterator() { 629 if (mWordIterator == null) { 630 mWordIterator = new WordIterator(mTextView.getTextServicesLocale()); 631 } 632 return mWordIterator; 633 } 634 635 private long getCharRange(int offset) { 636 final int textLength = mTextView.getText().length(); 637 if (offset + 1 < textLength) { 638 final char currentChar = mTextView.getText().charAt(offset); 639 final char nextChar = mTextView.getText().charAt(offset + 1); 640 if (Character.isSurrogatePair(currentChar, nextChar)) { 641 return TextUtils.packRangeInLong(offset, offset + 2); 642 } 643 } 644 if (offset < textLength) { 645 return TextUtils.packRangeInLong(offset, offset + 1); 646 } 647 if (offset - 2 >= 0) { 648 final char previousChar = mTextView.getText().charAt(offset - 1); 649 final char previousPreviousChar = mTextView.getText().charAt(offset - 2); 650 if (Character.isSurrogatePair(previousPreviousChar, previousChar)) { 651 return TextUtils.packRangeInLong(offset - 2, offset); 652 } 653 } 654 if (offset - 1 >= 0) { 655 return TextUtils.packRangeInLong(offset - 1, offset); 656 } 657 return TextUtils.packRangeInLong(offset, offset); 658 } 659 660 private boolean touchPositionIsInSelection() { 661 int selectionStart = mTextView.getSelectionStart(); 662 int selectionEnd = mTextView.getSelectionEnd(); 663 664 if (selectionStart == selectionEnd) { 665 return false; 666 } 667 668 if (selectionStart > selectionEnd) { 669 int tmp = selectionStart; 670 selectionStart = selectionEnd; 671 selectionEnd = tmp; 672 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 673 } 674 675 SelectionModifierCursorController selectionController = getSelectionController(); 676 int minOffset = selectionController.getMinTouchOffset(); 677 int maxOffset = selectionController.getMaxTouchOffset(); 678 679 return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); 680 } 681 682 private PositionListener getPositionListener() { 683 if (mPositionListener == null) { 684 mPositionListener = new PositionListener(); 685 } 686 return mPositionListener; 687 } 688 689 private interface TextViewPositionListener { 690 public void updatePosition(int parentPositionX, int parentPositionY, 691 boolean parentPositionChanged, boolean parentScrolled); 692 } 693 694 private boolean isPositionVisible(int positionX, int positionY) { 695 synchronized (TEMP_POSITION) { 696 final float[] position = TEMP_POSITION; 697 position[0] = positionX; 698 position[1] = positionY; 699 View view = mTextView; 700 701 while (view != null) { 702 if (view != mTextView) { 703 // Local scroll is already taken into account in positionX/Y 704 position[0] -= view.getScrollX(); 705 position[1] -= view.getScrollY(); 706 } 707 708 if (position[0] < 0 || position[1] < 0 || 709 position[0] > view.getWidth() || position[1] > view.getHeight()) { 710 return false; 711 } 712 713 if (!view.getMatrix().isIdentity()) { 714 view.getMatrix().mapPoints(position); 715 } 716 717 position[0] += view.getLeft(); 718 position[1] += view.getTop(); 719 720 final ViewParent parent = view.getParent(); 721 if (parent instanceof View) { 722 view = (View) parent; 723 } else { 724 // We've reached the ViewRoot, stop iterating 725 view = null; 726 } 727 } 728 } 729 730 // We've been able to walk up the view hierarchy and the position was never clipped 731 return true; 732 } 733 734 private boolean isOffsetVisible(int offset) { 735 Layout layout = mTextView.getLayout(); 736 final int line = layout.getLineForOffset(offset); 737 final int lineBottom = layout.getLineBottom(line); 738 final int primaryHorizontal = (int) layout.getPrimaryHorizontal(offset); 739 return isPositionVisible(primaryHorizontal + mTextView.viewportToContentHorizontalOffset(), 740 lineBottom + mTextView.viewportToContentVerticalOffset()); 741 } 742 743 /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed 744 * in the view. Returns false when the position is in the empty space of left/right of text. 745 */ 746 private boolean isPositionOnText(float x, float y) { 747 Layout layout = mTextView.getLayout(); 748 if (layout == null) return false; 749 750 final int line = mTextView.getLineAtCoordinate(y); 751 x = mTextView.convertToLocalHorizontalCoordinate(x); 752 753 if (x < layout.getLineLeft(line)) return false; 754 if (x > layout.getLineRight(line)) return false; 755 return true; 756 } 757 758 public boolean performLongClick(boolean handled) { 759 // Long press in empty space moves cursor and shows the Paste affordance if available. 760 if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) && 761 mInsertionControllerEnabled) { 762 final int offset = mTextView.getOffsetForPosition(mLastDownPositionX, 763 mLastDownPositionY); 764 stopSelectionActionMode(); 765 Selection.setSelection((Spannable) mTextView.getText(), offset); 766 getInsertionController().showWithActionPopup(); 767 handled = true; 768 } 769 770 if (!handled && mSelectionActionMode != null) { 771 if (touchPositionIsInSelection()) { 772 // Start a drag 773 final int start = mTextView.getSelectionStart(); 774 final int end = mTextView.getSelectionEnd(); 775 CharSequence selectedText = mTextView.getTransformedText(start, end); 776 ClipData data = ClipData.newPlainText(null, selectedText); 777 DragLocalState localState = new DragLocalState(mTextView, start, end); 778 mTextView.startDrag(data, getTextThumbnailBuilder(selectedText), localState, 0); 779 stopSelectionActionMode(); 780 } else { 781 getSelectionController().hide(); 782 selectCurrentWord(); 783 getSelectionController().show(); 784 } 785 handled = true; 786 } 787 788 // Start a new selection 789 if (!handled) { 790 handled = startSelectionActionMode(); 791 } 792 793 return handled; 794 } 795 796 private long getLastTouchOffsets() { 797 SelectionModifierCursorController selectionController = getSelectionController(); 798 final int minOffset = selectionController.getMinTouchOffset(); 799 final int maxOffset = selectionController.getMaxTouchOffset(); 800 return TextUtils.packRangeInLong(minOffset, maxOffset); 801 } 802 803 void onFocusChanged(boolean focused, int direction) { 804 mShowCursor = SystemClock.uptimeMillis(); 805 ensureEndedBatchEdit(); 806 807 if (focused) { 808 int selStart = mTextView.getSelectionStart(); 809 int selEnd = mTextView.getSelectionEnd(); 810 811 // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection 812 // mode for these, unless there was a specific selection already started. 813 final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 && 814 selEnd == mTextView.getText().length(); 815 816 mCreatedWithASelection = mFrozenWithFocus && mTextView.hasSelection() && 817 !isFocusHighlighted; 818 819 if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { 820 // If a tap was used to give focus to that view, move cursor at tap position. 821 // Has to be done before onTakeFocus, which can be overloaded. 822 final int lastTapPosition = getLastTapPosition(); 823 if (lastTapPosition >= 0) { 824 Selection.setSelection((Spannable) mTextView.getText(), lastTapPosition); 825 } 826 827 // Note this may have to be moved out of the Editor class 828 MovementMethod mMovement = mTextView.getMovementMethod(); 829 if (mMovement != null) { 830 mMovement.onTakeFocus(mTextView, (Spannable) mTextView.getText(), direction); 831 } 832 833 // The DecorView does not have focus when the 'Done' ExtractEditText button is 834 // pressed. Since it is the ViewAncestor's mView, it requests focus before 835 // ExtractEditText clears focus, which gives focus to the ExtractEditText. 836 // This special case ensure that we keep current selection in that case. 837 // It would be better to know why the DecorView does not have focus at that time. 838 if (((mTextView instanceof ExtractEditText) || mSelectionMoved) && 839 selStart >= 0 && selEnd >= 0) { 840 /* 841 * Someone intentionally set the selection, so let them 842 * do whatever it is that they wanted to do instead of 843 * the default on-focus behavior. We reset the selection 844 * here instead of just skipping the onTakeFocus() call 845 * because some movement methods do something other than 846 * just setting the selection in theirs and we still 847 * need to go through that path. 848 */ 849 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 850 } 851 852 if (mSelectAllOnFocus) { 853 mTextView.selectAllText(); 854 } 855 856 mTouchFocusSelected = true; 857 } 858 859 mFrozenWithFocus = false; 860 mSelectionMoved = false; 861 862 if (mError != null) { 863 showError(); 864 } 865 866 makeBlink(); 867 } else { 868 if (mError != null) { 869 hideError(); 870 } 871 // Don't leave us in the middle of a batch edit. 872 mTextView.onEndBatchEdit(); 873 874 if (mTextView instanceof ExtractEditText) { 875 // terminateTextSelectionMode removes selection, which we want to keep when 876 // ExtractEditText goes out of focus. 877 final int selStart = mTextView.getSelectionStart(); 878 final int selEnd = mTextView.getSelectionEnd(); 879 hideControllers(); 880 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 881 } else { 882 hideControllers(); 883 downgradeEasyCorrectionSpans(); 884 } 885 886 // No need to create the controller 887 if (mSelectionModifierCursorController != null) { 888 mSelectionModifierCursorController.resetTouchOffsets(); 889 } 890 } 891 } 892 893 /** 894 * Downgrades to simple suggestions all the easy correction spans that are not a spell check 895 * span. 896 */ 897 private void downgradeEasyCorrectionSpans() { 898 CharSequence text = mTextView.getText(); 899 if (text instanceof Spannable) { 900 Spannable spannable = (Spannable) text; 901 SuggestionSpan[] suggestionSpans = spannable.getSpans(0, 902 spannable.length(), SuggestionSpan.class); 903 for (int i = 0; i < suggestionSpans.length; i++) { 904 int flags = suggestionSpans[i].getFlags(); 905 if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0 906 && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) { 907 flags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 908 suggestionSpans[i].setFlags(flags); 909 } 910 } 911 } 912 } 913 914 void sendOnTextChanged(int start, int after) { 915 updateSpellCheckSpans(start, start + after, false); 916 917 // Hide the controllers as soon as text is modified (typing, procedural...) 918 // We do not hide the span controllers, since they can be added when a new text is 919 // inserted into the text view (voice IME). 920 hideCursorControllers(); 921 } 922 923 private int getLastTapPosition() { 924 // No need to create the controller at that point, no last tap position saved 925 if (mSelectionModifierCursorController != null) { 926 int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); 927 if (lastTapPosition >= 0) { 928 // Safety check, should not be possible. 929 if (lastTapPosition > mTextView.getText().length()) { 930 lastTapPosition = mTextView.getText().length(); 931 } 932 return lastTapPosition; 933 } 934 } 935 936 return -1; 937 } 938 939 void onWindowFocusChanged(boolean hasWindowFocus) { 940 if (hasWindowFocus) { 941 if (mBlink != null) { 942 mBlink.uncancel(); 943 makeBlink(); 944 } 945 } else { 946 if (mBlink != null) { 947 mBlink.cancel(); 948 } 949 if (mInputContentType != null) { 950 mInputContentType.enterDown = false; 951 } 952 // Order matters! Must be done before onParentLostFocus to rely on isShowingUp 953 hideControllers(); 954 if (mSuggestionsPopupWindow != null) { 955 mSuggestionsPopupWindow.onParentLostFocus(); 956 } 957 958 // Don't leave us in the middle of a batch edit. 959 mTextView.onEndBatchEdit(); 960 } 961 } 962 963 void onTouchEvent(MotionEvent event) { 964 if (hasSelectionController()) { 965 getSelectionController().onTouchEvent(event); 966 } 967 968 if (mShowSuggestionRunnable != null) { 969 mTextView.removeCallbacks(mShowSuggestionRunnable); 970 mShowSuggestionRunnable = null; 971 } 972 973 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 974 mLastDownPositionX = event.getX(); 975 mLastDownPositionY = event.getY(); 976 977 // Reset this state; it will be re-set if super.onTouchEvent 978 // causes focus to move to the view. 979 mTouchFocusSelected = false; 980 mIgnoreActionUpEvent = false; 981 } 982 } 983 984 public void beginBatchEdit() { 985 mInBatchEditControllers = true; 986 final InputMethodState ims = mInputMethodState; 987 if (ims != null) { 988 int nesting = ++ims.mBatchEditNesting; 989 if (nesting == 1) { 990 ims.mCursorChanged = false; 991 ims.mChangedDelta = 0; 992 if (ims.mContentChanged) { 993 // We already have a pending change from somewhere else, 994 // so turn this into a full update. 995 ims.mChangedStart = 0; 996 ims.mChangedEnd = mTextView.getText().length(); 997 } else { 998 ims.mChangedStart = EXTRACT_UNKNOWN; 999 ims.mChangedEnd = EXTRACT_UNKNOWN; 1000 ims.mContentChanged = false; 1001 } 1002 mTextView.onBeginBatchEdit(); 1003 } 1004 } 1005 } 1006 1007 public void endBatchEdit() { 1008 mInBatchEditControllers = false; 1009 final InputMethodState ims = mInputMethodState; 1010 if (ims != null) { 1011 int nesting = --ims.mBatchEditNesting; 1012 if (nesting == 0) { 1013 finishBatchEdit(ims); 1014 } 1015 } 1016 } 1017 1018 void ensureEndedBatchEdit() { 1019 final InputMethodState ims = mInputMethodState; 1020 if (ims != null && ims.mBatchEditNesting != 0) { 1021 ims.mBatchEditNesting = 0; 1022 finishBatchEdit(ims); 1023 } 1024 } 1025 1026 void finishBatchEdit(final InputMethodState ims) { 1027 mTextView.onEndBatchEdit(); 1028 1029 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1030 mTextView.updateAfterEdit(); 1031 reportExtractedText(); 1032 } else if (ims.mCursorChanged) { 1033 // Cheezy way to get us to report the current cursor location. 1034 mTextView.invalidateCursor(); 1035 } 1036 } 1037 1038 static final int EXTRACT_NOTHING = -2; 1039 static final int EXTRACT_UNKNOWN = -1; 1040 1041 boolean extractText(ExtractedTextRequest request, ExtractedText outText) { 1042 return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, 1043 EXTRACT_UNKNOWN, outText); 1044 } 1045 1046 private boolean extractTextInternal(ExtractedTextRequest request, 1047 int partialStartOffset, int partialEndOffset, int delta, 1048 ExtractedText outText) { 1049 final CharSequence content = mTextView.getText(); 1050 if (content != null) { 1051 if (partialStartOffset != EXTRACT_NOTHING) { 1052 final int N = content.length(); 1053 if (partialStartOffset < 0) { 1054 outText.partialStartOffset = outText.partialEndOffset = -1; 1055 partialStartOffset = 0; 1056 partialEndOffset = N; 1057 } else { 1058 // Now use the delta to determine the actual amount of text 1059 // we need. 1060 partialEndOffset += delta; 1061 // Adjust offsets to ensure we contain full spans. 1062 if (content instanceof Spanned) { 1063 Spanned spanned = (Spanned)content; 1064 Object[] spans = spanned.getSpans(partialStartOffset, 1065 partialEndOffset, ParcelableSpan.class); 1066 int i = spans.length; 1067 while (i > 0) { 1068 i--; 1069 int j = spanned.getSpanStart(spans[i]); 1070 if (j < partialStartOffset) partialStartOffset = j; 1071 j = spanned.getSpanEnd(spans[i]); 1072 if (j > partialEndOffset) partialEndOffset = j; 1073 } 1074 } 1075 outText.partialStartOffset = partialStartOffset; 1076 outText.partialEndOffset = partialEndOffset - delta; 1077 1078 if (partialStartOffset > N) { 1079 partialStartOffset = N; 1080 } else if (partialStartOffset < 0) { 1081 partialStartOffset = 0; 1082 } 1083 if (partialEndOffset > N) { 1084 partialEndOffset = N; 1085 } else if (partialEndOffset < 0) { 1086 partialEndOffset = 0; 1087 } 1088 } 1089 if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) { 1090 outText.text = content.subSequence(partialStartOffset, 1091 partialEndOffset); 1092 } else { 1093 outText.text = TextUtils.substring(content, partialStartOffset, 1094 partialEndOffset); 1095 } 1096 } else { 1097 outText.partialStartOffset = 0; 1098 outText.partialEndOffset = 0; 1099 outText.text = ""; 1100 } 1101 outText.flags = 0; 1102 if (MetaKeyKeyListener.getMetaState(content, MetaKeyKeyListener.META_SELECTING) != 0) { 1103 outText.flags |= ExtractedText.FLAG_SELECTING; 1104 } 1105 if (mTextView.isSingleLine()) { 1106 outText.flags |= ExtractedText.FLAG_SINGLE_LINE; 1107 } 1108 outText.startOffset = 0; 1109 outText.selectionStart = mTextView.getSelectionStart(); 1110 outText.selectionEnd = mTextView.getSelectionEnd(); 1111 return true; 1112 } 1113 return false; 1114 } 1115 1116 boolean reportExtractedText() { 1117 final Editor.InputMethodState ims = mInputMethodState; 1118 if (ims != null) { 1119 final boolean contentChanged = ims.mContentChanged; 1120 if (contentChanged || ims.mSelectionModeChanged) { 1121 ims.mContentChanged = false; 1122 ims.mSelectionModeChanged = false; 1123 final ExtractedTextRequest req = ims.mExtracting; 1124 if (req != null) { 1125 InputMethodManager imm = InputMethodManager.peekInstance(); 1126 if (imm != null) { 1127 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1128 "Retrieving extracted start=" + ims.mChangedStart + 1129 " end=" + ims.mChangedEnd + 1130 " delta=" + ims.mChangedDelta); 1131 if (ims.mChangedStart < 0 && !contentChanged) { 1132 ims.mChangedStart = EXTRACT_NOTHING; 1133 } 1134 if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, 1135 ims.mChangedDelta, ims.mTmpExtracted)) { 1136 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1137 "Reporting extracted start=" + 1138 ims.mTmpExtracted.partialStartOffset + 1139 " end=" + ims.mTmpExtracted.partialEndOffset + 1140 ": " + ims.mTmpExtracted.text); 1141 imm.updateExtractedText(mTextView, req.token, ims.mTmpExtracted); 1142 ims.mChangedStart = EXTRACT_UNKNOWN; 1143 ims.mChangedEnd = EXTRACT_UNKNOWN; 1144 ims.mChangedDelta = 0; 1145 ims.mContentChanged = false; 1146 return true; 1147 } 1148 } 1149 } 1150 } 1151 } 1152 return false; 1153 } 1154 1155 void onDraw(Canvas canvas, Layout layout, Path highlight, Paint highlightPaint, 1156 int cursorOffsetVertical) { 1157 final int selectionStart = mTextView.getSelectionStart(); 1158 final int selectionEnd = mTextView.getSelectionEnd(); 1159 1160 final InputMethodState ims = mInputMethodState; 1161 if (ims != null && ims.mBatchEditNesting == 0) { 1162 InputMethodManager imm = InputMethodManager.peekInstance(); 1163 if (imm != null) { 1164 if (imm.isActive(mTextView)) { 1165 boolean reported = false; 1166 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1167 // We are in extract mode and the content has changed 1168 // in some way... just report complete new text to the 1169 // input method. 1170 reported = reportExtractedText(); 1171 } 1172 if (!reported && highlight != null) { 1173 int candStart = -1; 1174 int candEnd = -1; 1175 if (mTextView.getText() instanceof Spannable) { 1176 Spannable sp = (Spannable) mTextView.getText(); 1177 candStart = EditableInputConnection.getComposingSpanStart(sp); 1178 candEnd = EditableInputConnection.getComposingSpanEnd(sp); 1179 } 1180 imm.updateSelection(mTextView, 1181 selectionStart, selectionEnd, candStart, candEnd); 1182 } 1183 } 1184 1185 if (imm.isWatchingCursor(mTextView) && highlight != null) { 1186 highlight.computeBounds(ims.mTmpRectF, true); 1187 ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0; 1188 1189 canvas.getMatrix().mapPoints(ims.mTmpOffset); 1190 ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]); 1191 1192 ims.mTmpRectF.offset(0, cursorOffsetVertical); 1193 1194 ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5), 1195 (int)(ims.mTmpRectF.top + 0.5), 1196 (int)(ims.mTmpRectF.right + 0.5), 1197 (int)(ims.mTmpRectF.bottom + 0.5)); 1198 1199 imm.updateCursor(mTextView, 1200 ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top, 1201 ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom); 1202 } 1203 } 1204 } 1205 1206 if (mCorrectionHighlighter != null) { 1207 mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); 1208 } 1209 1210 if (highlight != null && selectionStart == selectionEnd && mCursorCount > 0) { 1211 drawCursor(canvas, cursorOffsetVertical); 1212 // Rely on the drawable entirely, do not draw the cursor line. 1213 // Has to be done after the IMM related code above which relies on the highlight. 1214 highlight = null; 1215 } 1216 1217 if (mTextView.canHaveDisplayList() && canvas.isHardwareAccelerated()) { 1218 drawHardwareAccelerated(canvas, layout, highlight, highlightPaint, 1219 cursorOffsetVertical); 1220 } else { 1221 layout.draw(canvas, highlight, highlightPaint, cursorOffsetVertical); 1222 } 1223 } 1224 1225 private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight, 1226 Paint highlightPaint, int cursorOffsetVertical) { 1227 final int width = mTextView.getWidth(); 1228 final int height = mTextView.getHeight(); 1229 1230 final long lineRange = layout.getLineRangeForDraw(canvas); 1231 int firstLine = TextUtils.unpackRangeStartFromLong(lineRange); 1232 int lastLine = TextUtils.unpackRangeEndFromLong(lineRange); 1233 if (lastLine < 0) return; 1234 1235 layout.drawBackground(canvas, highlight, highlightPaint, cursorOffsetVertical, 1236 firstLine, lastLine); 1237 1238 if (layout instanceof DynamicLayout) { 1239 if (mTextDisplayLists == null) { 1240 mTextDisplayLists = new DisplayList[ArrayUtils.idealObjectArraySize(0)]; 1241 } 1242 1243 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1244 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1245 int[] blockIndices = dynamicLayout.getBlockIndices(); 1246 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1247 1248 int endOfPreviousBlock = -1; 1249 int searchStartIndex = 0; 1250 for (int i = 0; i < numberOfBlocks; i++) { 1251 int blockEndLine = blockEndLines[i]; 1252 int blockIndex = blockIndices[i]; 1253 1254 final boolean blockIsInvalid = blockIndex == DynamicLayout.INVALID_BLOCK_INDEX; 1255 if (blockIsInvalid) { 1256 blockIndex = getAvailableDisplayListIndex(blockIndices, numberOfBlocks, 1257 searchStartIndex); 1258 // Note how dynamic layout's internal block indices get updated from Editor 1259 blockIndices[i] = blockIndex; 1260 searchStartIndex = blockIndex + 1; 1261 } 1262 1263 DisplayList blockDisplayList = mTextDisplayLists[blockIndex]; 1264 if (blockDisplayList == null) { 1265 blockDisplayList = mTextDisplayLists[blockIndex] = 1266 mTextView.getHardwareRenderer().createDisplayList("Text " + blockIndex); 1267 } else { 1268 if (blockIsInvalid) blockDisplayList.invalidate(); 1269 } 1270 1271 if (!blockDisplayList.isValid()) { 1272 final int blockBeginLine = endOfPreviousBlock + 1; 1273 final int top = layout.getLineTop(blockBeginLine); 1274 final int bottom = layout.getLineBottom(blockEndLine); 1275 1276 final HardwareCanvas hardwareCanvas = blockDisplayList.start(); 1277 try { 1278 hardwareCanvas.setViewport(width, bottom - top); 1279 // The dirty rect should always be null for a display list 1280 hardwareCanvas.onPreDraw(null); 1281 // drawText is always relative to TextView's origin, this translation brings 1282 // this range of text back to the top of the viewport 1283 hardwareCanvas.translate(0, -top); 1284 layout.drawText(hardwareCanvas, blockBeginLine, blockEndLine); 1285 hardwareCanvas.translate(0, top); 1286 } finally { 1287 hardwareCanvas.onPostDraw(); 1288 blockDisplayList.end(); 1289 if (View.USE_DISPLAY_LIST_PROPERTIES) { 1290 blockDisplayList.setLeftTopRightBottom(0, top, width, bottom); 1291 // Same as drawDisplayList below, handled by our TextView's parent 1292 blockDisplayList.setClipChildren(false); 1293 } 1294 } 1295 } 1296 1297 // TODO When View.USE_DISPLAY_LIST_PROPERTIES is the only code path, the 1298 // width and height parameters should be removed and the bounds set above in 1299 // setLeftTopRightBottom should be used instead for quick rejection. 1300 ((HardwareCanvas) canvas).drawDisplayList(blockDisplayList, width, height, null, 1301 0 /* no child clipping, our TextView parent enforces it */); 1302 endOfPreviousBlock = blockEndLine; 1303 } 1304 } else { 1305 // Boring layout is used for empty and hint text 1306 layout.drawText(canvas, firstLine, lastLine); 1307 } 1308 } 1309 1310 private int getAvailableDisplayListIndex(int[] blockIndices, int numberOfBlocks, 1311 int searchStartIndex) { 1312 int length = mTextDisplayLists.length; 1313 for (int i = searchStartIndex; i < length; i++) { 1314 boolean blockIndexFound = false; 1315 for (int j = 0; j < numberOfBlocks; j++) { 1316 if (blockIndices[j] == i) { 1317 blockIndexFound = true; 1318 break; 1319 } 1320 } 1321 if (blockIndexFound) continue; 1322 return i; 1323 } 1324 1325 // No available index found, the pool has to grow 1326 int newSize = ArrayUtils.idealIntArraySize(length + 1); 1327 DisplayList[] displayLists = new DisplayList[newSize]; 1328 System.arraycopy(mTextDisplayLists, 0, displayLists, 0, length); 1329 mTextDisplayLists = displayLists; 1330 return length; 1331 } 1332 1333 private void drawCursor(Canvas canvas, int cursorOffsetVertical) { 1334 final boolean translate = cursorOffsetVertical != 0; 1335 if (translate) canvas.translate(0, cursorOffsetVertical); 1336 for (int i = 0; i < mCursorCount; i++) { 1337 mCursorDrawable[i].draw(canvas); 1338 } 1339 if (translate) canvas.translate(0, -cursorOffsetVertical); 1340 } 1341 1342 /** 1343 * Invalidates all the sub-display lists that overlap the specified character range 1344 */ 1345 void invalidateTextDisplayList(Layout layout, int start, int end) { 1346 if (mTextDisplayLists != null && layout instanceof DynamicLayout) { 1347 final int firstLine = layout.getLineForOffset(start); 1348 final int lastLine = layout.getLineForOffset(end); 1349 1350 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1351 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1352 int[] blockIndices = dynamicLayout.getBlockIndices(); 1353 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1354 1355 int i = 0; 1356 // Skip the blocks before firstLine 1357 while (i < numberOfBlocks) { 1358 if (blockEndLines[i] >= firstLine) break; 1359 i++; 1360 } 1361 1362 // Invalidate all subsequent blocks until lastLine is passed 1363 while (i < numberOfBlocks) { 1364 final int blockIndex = blockIndices[i]; 1365 if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX) { 1366 mTextDisplayLists[blockIndex].invalidate(); 1367 } 1368 if (blockEndLines[i] >= lastLine) break; 1369 i++; 1370 } 1371 } 1372 } 1373 1374 void invalidateTextDisplayList() { 1375 if (mTextDisplayLists != null) { 1376 for (int i = 0; i < mTextDisplayLists.length; i++) { 1377 if (mTextDisplayLists[i] != null) mTextDisplayLists[i].invalidate(); 1378 } 1379 } 1380 } 1381 1382 void updateCursorsPositions() { 1383 if (mTextView.mCursorDrawableRes == 0) { 1384 mCursorCount = 0; 1385 return; 1386 } 1387 1388 Layout layout = mTextView.getLayout(); 1389 final int offset = mTextView.getSelectionStart(); 1390 final int line = layout.getLineForOffset(offset); 1391 final int top = layout.getLineTop(line); 1392 final int bottom = layout.getLineTop(line + 1); 1393 1394 mCursorCount = layout.isLevelBoundary(offset) ? 2 : 1; 1395 1396 int middle = bottom; 1397 if (mCursorCount == 2) { 1398 // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)} 1399 middle = (top + bottom) >> 1; 1400 } 1401 1402 updateCursorPosition(0, top, middle, layout.getPrimaryHorizontal(offset)); 1403 1404 if (mCursorCount == 2) { 1405 updateCursorPosition(1, middle, bottom, layout.getSecondaryHorizontal(offset)); 1406 } 1407 } 1408 1409 /** 1410 * @return true if the selection mode was actually started. 1411 */ 1412 boolean startSelectionActionMode() { 1413 if (mSelectionActionMode != null) { 1414 // Selection action mode is already started 1415 return false; 1416 } 1417 1418 if (!canSelectText() || !mTextView.requestFocus()) { 1419 Log.w(TextView.LOG_TAG, 1420 "TextView does not support text selection. Action mode cancelled."); 1421 return false; 1422 } 1423 1424 if (!mTextView.hasSelection()) { 1425 // There may already be a selection on device rotation 1426 if (!selectCurrentWord()) { 1427 // No word found under cursor or text selection not permitted. 1428 return false; 1429 } 1430 } 1431 1432 boolean willExtract = extractedTextModeWillBeStarted(); 1433 1434 // Do not start the action mode when extracted text will show up full screen, which would 1435 // immediately hide the newly created action bar and would be visually distracting. 1436 if (!willExtract) { 1437 ActionMode.Callback actionModeCallback = new SelectionActionModeCallback(); 1438 mSelectionActionMode = mTextView.startActionMode(actionModeCallback); 1439 } 1440 1441 final boolean selectionStarted = mSelectionActionMode != null || willExtract; 1442 if (selectionStarted && !mTextView.isTextSelectable()) { 1443 // Show the IME to be able to replace text, except when selecting non editable text. 1444 final InputMethodManager imm = InputMethodManager.peekInstance(); 1445 if (imm != null) { 1446 imm.showSoftInput(mTextView, 0, null); 1447 } 1448 } 1449 1450 return selectionStarted; 1451 } 1452 1453 private boolean extractedTextModeWillBeStarted() { 1454 if (!(mTextView instanceof ExtractEditText)) { 1455 final InputMethodManager imm = InputMethodManager.peekInstance(); 1456 return imm != null && imm.isFullscreenMode(); 1457 } 1458 return false; 1459 } 1460 1461 /** 1462 * @return <code>true</code> if the cursor/current selection overlaps a {@link SuggestionSpan}. 1463 */ 1464 private boolean isCursorInsideSuggestionSpan() { 1465 CharSequence text = mTextView.getText(); 1466 if (!(text instanceof Spannable)) return false; 1467 1468 SuggestionSpan[] suggestionSpans = ((Spannable) text).getSpans( 1469 mTextView.getSelectionStart(), mTextView.getSelectionEnd(), SuggestionSpan.class); 1470 return (suggestionSpans.length > 0); 1471 } 1472 1473 /** 1474 * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with 1475 * {@link SuggestionSpan#FLAG_EASY_CORRECT} set. 1476 */ 1477 private boolean isCursorInsideEasyCorrectionSpan() { 1478 Spannable spannable = (Spannable) mTextView.getText(); 1479 SuggestionSpan[] suggestionSpans = spannable.getSpans(mTextView.getSelectionStart(), 1480 mTextView.getSelectionEnd(), SuggestionSpan.class); 1481 for (int i = 0; i < suggestionSpans.length; i++) { 1482 if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) { 1483 return true; 1484 } 1485 } 1486 return false; 1487 } 1488 1489 void onTouchUpEvent(MotionEvent event) { 1490 boolean selectAllGotFocus = mSelectAllOnFocus && mTextView.didTouchFocusSelect(); 1491 hideControllers(); 1492 CharSequence text = mTextView.getText(); 1493 if (!selectAllGotFocus && text.length() > 0) { 1494 // Move cursor 1495 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 1496 Selection.setSelection((Spannable) text, offset); 1497 if (mSpellChecker != null) { 1498 // When the cursor moves, the word that was typed may need spell check 1499 mSpellChecker.onSelectionChanged(); 1500 } 1501 if (!extractedTextModeWillBeStarted()) { 1502 if (isCursorInsideEasyCorrectionSpan()) { 1503 mShowSuggestionRunnable = new Runnable() { 1504 public void run() { 1505 showSuggestions(); 1506 } 1507 }; 1508 // removeCallbacks is performed on every touch 1509 mTextView.postDelayed(mShowSuggestionRunnable, 1510 ViewConfiguration.getDoubleTapTimeout()); 1511 } else if (hasInsertionController()) { 1512 getInsertionController().show(); 1513 } 1514 } 1515 } 1516 } 1517 1518 protected void stopSelectionActionMode() { 1519 if (mSelectionActionMode != null) { 1520 // This will hide the mSelectionModifierCursorController 1521 mSelectionActionMode.finish(); 1522 } 1523 } 1524 1525 /** 1526 * @return True if this view supports insertion handles. 1527 */ 1528 boolean hasInsertionController() { 1529 return mInsertionControllerEnabled; 1530 } 1531 1532 /** 1533 * @return True if this view supports selection handles. 1534 */ 1535 boolean hasSelectionController() { 1536 return mSelectionControllerEnabled; 1537 } 1538 1539 InsertionPointCursorController getInsertionController() { 1540 if (!mInsertionControllerEnabled) { 1541 return null; 1542 } 1543 1544 if (mInsertionPointCursorController == null) { 1545 mInsertionPointCursorController = new InsertionPointCursorController(); 1546 1547 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 1548 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 1549 } 1550 1551 return mInsertionPointCursorController; 1552 } 1553 1554 SelectionModifierCursorController getSelectionController() { 1555 if (!mSelectionControllerEnabled) { 1556 return null; 1557 } 1558 1559 if (mSelectionModifierCursorController == null) { 1560 mSelectionModifierCursorController = new SelectionModifierCursorController(); 1561 1562 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 1563 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 1564 } 1565 1566 return mSelectionModifierCursorController; 1567 } 1568 1569 private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) { 1570 if (mCursorDrawable[cursorIndex] == null) 1571 mCursorDrawable[cursorIndex] = mTextView.getResources().getDrawable( 1572 mTextView.mCursorDrawableRes); 1573 1574 if (mTempRect == null) mTempRect = new Rect(); 1575 mCursorDrawable[cursorIndex].getPadding(mTempRect); 1576 final int width = mCursorDrawable[cursorIndex].getIntrinsicWidth(); 1577 horizontal = Math.max(0.5f, horizontal - 0.5f); 1578 final int left = (int) (horizontal) - mTempRect.left; 1579 mCursorDrawable[cursorIndex].setBounds(left, top - mTempRect.top, left + width, 1580 bottom + mTempRect.bottom); 1581 } 1582 1583 /** 1584 * Called by the framework in response to a text auto-correction (such as fixing a typo using a 1585 * a dictionnary) from the current input method, provided by it calling 1586 * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default 1587 * implementation flashes the background of the corrected word to provide feedback to the user. 1588 * 1589 * @param info The auto correct info about the text that was corrected. 1590 */ 1591 public void onCommitCorrection(CorrectionInfo info) { 1592 if (mCorrectionHighlighter == null) { 1593 mCorrectionHighlighter = new CorrectionHighlighter(); 1594 } else { 1595 mCorrectionHighlighter.invalidate(false); 1596 } 1597 1598 mCorrectionHighlighter.highlight(info); 1599 } 1600 1601 void showSuggestions() { 1602 if (mSuggestionsPopupWindow == null) { 1603 mSuggestionsPopupWindow = new SuggestionsPopupWindow(); 1604 } 1605 hideControllers(); 1606 mSuggestionsPopupWindow.show(); 1607 } 1608 1609 boolean areSuggestionsShown() { 1610 return mSuggestionsPopupWindow != null && mSuggestionsPopupWindow.isShowing(); 1611 } 1612 1613 void onScrollChanged() { 1614 if (mPositionListener != null) { 1615 mPositionListener.onScrollChanged(); 1616 } 1617 } 1618 1619 /** 1620 * @return True when the TextView isFocused and has a valid zero-length selection (cursor). 1621 */ 1622 private boolean shouldBlink() { 1623 if (!isCursorVisible() || !mTextView.isFocused()) return false; 1624 1625 final int start = mTextView.getSelectionStart(); 1626 if (start < 0) return false; 1627 1628 final int end = mTextView.getSelectionEnd(); 1629 if (end < 0) return false; 1630 1631 return start == end; 1632 } 1633 1634 void makeBlink() { 1635 if (shouldBlink()) { 1636 mShowCursor = SystemClock.uptimeMillis(); 1637 if (mBlink == null) mBlink = new Blink(); 1638 mBlink.removeCallbacks(mBlink); 1639 mBlink.postAtTime(mBlink, mShowCursor + BLINK); 1640 } else { 1641 if (mBlink != null) mBlink.removeCallbacks(mBlink); 1642 } 1643 } 1644 1645 private class Blink extends Handler implements Runnable { 1646 private boolean mCancelled; 1647 1648 public void run() { 1649 if (mCancelled) { 1650 return; 1651 } 1652 1653 removeCallbacks(Blink.this); 1654 1655 if (shouldBlink()) { 1656 if (mTextView.getLayout() != null) { 1657 mTextView.invalidateCursorPath(); 1658 } 1659 1660 postAtTime(this, SystemClock.uptimeMillis() + BLINK); 1661 } 1662 } 1663 1664 void cancel() { 1665 if (!mCancelled) { 1666 removeCallbacks(Blink.this); 1667 mCancelled = true; 1668 } 1669 } 1670 1671 void uncancel() { 1672 mCancelled = false; 1673 } 1674 } 1675 1676 private DragShadowBuilder getTextThumbnailBuilder(CharSequence text) { 1677 TextView shadowView = (TextView) View.inflate(mTextView.getContext(), 1678 com.android.internal.R.layout.text_drag_thumbnail, null); 1679 1680 if (shadowView == null) { 1681 throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); 1682 } 1683 1684 if (text.length() > DRAG_SHADOW_MAX_TEXT_LENGTH) { 1685 text = text.subSequence(0, DRAG_SHADOW_MAX_TEXT_LENGTH); 1686 } 1687 shadowView.setText(text); 1688 shadowView.setTextColor(mTextView.getTextColors()); 1689 1690 shadowView.setTextAppearance(mTextView.getContext(), R.styleable.Theme_textAppearanceLarge); 1691 shadowView.setGravity(Gravity.CENTER); 1692 1693 shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 1694 ViewGroup.LayoutParams.WRAP_CONTENT)); 1695 1696 final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); 1697 shadowView.measure(size, size); 1698 1699 shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight()); 1700 shadowView.invalidate(); 1701 return new DragShadowBuilder(shadowView); 1702 } 1703 1704 private static class DragLocalState { 1705 public TextView sourceTextView; 1706 public int start, end; 1707 1708 public DragLocalState(TextView sourceTextView, int start, int end) { 1709 this.sourceTextView = sourceTextView; 1710 this.start = start; 1711 this.end = end; 1712 } 1713 } 1714 1715 void onDrop(DragEvent event) { 1716 StringBuilder content = new StringBuilder(""); 1717 ClipData clipData = event.getClipData(); 1718 final int itemCount = clipData.getItemCount(); 1719 for (int i=0; i < itemCount; i++) { 1720 Item item = clipData.getItemAt(i); 1721 content.append(item.coerceToStyledText(mTextView.getContext())); 1722 } 1723 1724 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 1725 1726 Object localState = event.getLocalState(); 1727 DragLocalState dragLocalState = null; 1728 if (localState instanceof DragLocalState) { 1729 dragLocalState = (DragLocalState) localState; 1730 } 1731 boolean dragDropIntoItself = dragLocalState != null && 1732 dragLocalState.sourceTextView == mTextView; 1733 1734 if (dragDropIntoItself) { 1735 if (offset >= dragLocalState.start && offset < dragLocalState.end) { 1736 // A drop inside the original selection discards the drop. 1737 return; 1738 } 1739 } 1740 1741 final int originalLength = mTextView.getText().length(); 1742 long minMax = mTextView.prepareSpacesAroundPaste(offset, offset, content); 1743 int min = TextUtils.unpackRangeStartFromLong(minMax); 1744 int max = TextUtils.unpackRangeEndFromLong(minMax); 1745 1746 Selection.setSelection((Spannable) mTextView.getText(), max); 1747 mTextView.replaceText_internal(min, max, content); 1748 1749 if (dragDropIntoItself) { 1750 int dragSourceStart = dragLocalState.start; 1751 int dragSourceEnd = dragLocalState.end; 1752 if (max <= dragSourceStart) { 1753 // Inserting text before selection has shifted positions 1754 final int shift = mTextView.getText().length() - originalLength; 1755 dragSourceStart += shift; 1756 dragSourceEnd += shift; 1757 } 1758 1759 // Delete original selection 1760 mTextView.deleteText_internal(dragSourceStart, dragSourceEnd); 1761 1762 // Make sure we do not leave two adjacent spaces. 1763 CharSequence t = mTextView.getTransformedText(dragSourceStart - 1, dragSourceStart + 1); 1764 if ( (dragSourceStart == 0 || Character.isSpaceChar(t.charAt(0))) && 1765 (dragSourceStart == mTextView.getText().length() || 1766 Character.isSpaceChar(t.charAt(1))) ) { 1767 final int pos = dragSourceStart == mTextView.getText().length() ? 1768 dragSourceStart - 1 : dragSourceStart; 1769 mTextView.deleteText_internal(pos, pos + 1); 1770 } 1771 } 1772 } 1773 1774 /** 1775 * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related 1776 * pop-up should be displayed. 1777 */ 1778 class EasyEditSpanController implements TextWatcher { 1779 1780 private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs 1781 1782 private EasyEditPopupWindow mPopupWindow; 1783 1784 private EasyEditSpan mEasyEditSpan; 1785 1786 private Runnable mHidePopup; 1787 1788 public void hide() { 1789 if (mPopupWindow != null) { 1790 mPopupWindow.hide(); 1791 mTextView.removeCallbacks(mHidePopup); 1792 } 1793 removeSpans(mTextView.getText()); 1794 mEasyEditSpan = null; 1795 } 1796 1797 public void beforeTextChanged(CharSequence s, int start, int count, int after) { 1798 // Intentionally empty 1799 } 1800 1801 public void afterTextChanged(Editable s) { 1802 // Intentionally empty 1803 } 1804 1805 /** 1806 * Monitors the changes in the text. 1807 * 1808 * <p>{@link SpanWatcher#onSpanAdded(Spannable, Object, int, int)} cannot be used, 1809 * as the notifications are not sent when a spannable (with spans) is inserted. 1810 */ 1811 public void onTextChanged(CharSequence buffer, int start, int before, int after) { 1812 adjustSpans(buffer, start, after); 1813 1814 if (mTextView.getWindowVisibility() != View.VISIBLE) { 1815 // The window is not visible yet, ignore the text change. 1816 return; 1817 } 1818 1819 if (mTextView.getLayout() == null) { 1820 // The view has not been layout yet, ignore the text change 1821 return; 1822 } 1823 1824 InputMethodManager imm = InputMethodManager.peekInstance(); 1825 if (!(mTextView instanceof ExtractEditText) && imm != null && imm.isFullscreenMode()) { 1826 // The input is in extract mode. We do not have to handle the easy edit in the 1827 // original TextView, as the ExtractEditText will do 1828 return; 1829 } 1830 1831 // Remove the current easy edit span, as the text changed, and remove the pop-up 1832 // (if any) 1833 if (mEasyEditSpan != null) { 1834 if (buffer instanceof Spannable) { 1835 ((Spannable) buffer).removeSpan(mEasyEditSpan); 1836 } 1837 mEasyEditSpan = null; 1838 } 1839 if (mPopupWindow != null && mPopupWindow.isShowing()) { 1840 mPopupWindow.hide(); 1841 } 1842 1843 // Display the new easy edit span (if any). 1844 if (buffer instanceof Spanned) { 1845 mEasyEditSpan = getSpan((Spanned) buffer); 1846 if (mEasyEditSpan != null) { 1847 if (mPopupWindow == null) { 1848 mPopupWindow = new EasyEditPopupWindow(); 1849 mHidePopup = new Runnable() { 1850 @Override 1851 public void run() { 1852 hide(); 1853 } 1854 }; 1855 } 1856 mPopupWindow.show(mEasyEditSpan); 1857 mTextView.removeCallbacks(mHidePopup); 1858 mTextView.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS); 1859 } 1860 } 1861 } 1862 1863 /** 1864 * Adjusts the spans by removing all of them except the last one. 1865 */ 1866 private void adjustSpans(CharSequence buffer, int start, int after) { 1867 // This method enforces that only one easy edit span is attached to the text. 1868 // A better way to enforce this would be to listen for onSpanAdded, but this method 1869 // cannot be used in this scenario as no notification is triggered when a text with 1870 // spans is inserted into a text. 1871 if (buffer instanceof Spannable) { 1872 Spannable spannable = (Spannable) buffer; 1873 EasyEditSpan[] spans = spannable.getSpans(start, start + after, EasyEditSpan.class); 1874 if (spans.length > 0) { 1875 // Assuming there was only one EasyEditSpan before, we only need check to 1876 // check for a duplicate if a new one is found in the modified interval 1877 spans = spannable.getSpans(0, spannable.length(), EasyEditSpan.class); 1878 for (int i = 1; i < spans.length; i++) { 1879 spannable.removeSpan(spans[i]); 1880 } 1881 } 1882 } 1883 } 1884 1885 /** 1886 * Removes all the {@link EasyEditSpan} currently attached. 1887 */ 1888 private void removeSpans(CharSequence buffer) { 1889 if (buffer instanceof Spannable) { 1890 Spannable spannable = (Spannable) buffer; 1891 EasyEditSpan[] spans = spannable.getSpans(0, spannable.length(), 1892 EasyEditSpan.class); 1893 for (int i = 0; i < spans.length; i++) { 1894 spannable.removeSpan(spans[i]); 1895 } 1896 } 1897 } 1898 1899 private EasyEditSpan getSpan(Spanned spanned) { 1900 EasyEditSpan[] easyEditSpans = spanned.getSpans(0, spanned.length(), 1901 EasyEditSpan.class); 1902 if (easyEditSpans.length == 0) { 1903 return null; 1904 } else { 1905 return easyEditSpans[0]; 1906 } 1907 } 1908 } 1909 1910 /** 1911 * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled 1912 * by {@link EasyEditSpanController}. 1913 */ 1914 private class EasyEditPopupWindow extends PinnedPopupWindow 1915 implements OnClickListener { 1916 private static final int POPUP_TEXT_LAYOUT = 1917 com.android.internal.R.layout.text_edit_action_popup_text; 1918 private TextView mDeleteTextView; 1919 private EasyEditSpan mEasyEditSpan; 1920 1921 @Override 1922 protected void createPopupWindow() { 1923 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 1924 com.android.internal.R.attr.textSelectHandleWindowStyle); 1925 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 1926 mPopupWindow.setClippingEnabled(true); 1927 } 1928 1929 @Override 1930 protected void initContentView() { 1931 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 1932 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 1933 mContentView = linearLayout; 1934 mContentView.setBackgroundResource( 1935 com.android.internal.R.drawable.text_edit_side_paste_window); 1936 1937 LayoutInflater inflater = (LayoutInflater)mTextView.getContext(). 1938 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 1939 1940 LayoutParams wrapContent = new LayoutParams( 1941 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 1942 1943 mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 1944 mDeleteTextView.setLayoutParams(wrapContent); 1945 mDeleteTextView.setText(com.android.internal.R.string.delete); 1946 mDeleteTextView.setOnClickListener(this); 1947 mContentView.addView(mDeleteTextView); 1948 } 1949 1950 public void show(EasyEditSpan easyEditSpan) { 1951 mEasyEditSpan = easyEditSpan; 1952 super.show(); 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 textView.setCompoundDrawablesWithIntrinsicBounds( 2293 com.android.internal.R.drawable.ic_suggestions_add, 0, 0, 0); 2294 } else if (suggestionInfo.suggestionIndex == DELETE_TEXT) { 2295 textView.setCompoundDrawablesWithIntrinsicBounds( 2296 com.android.internal.R.drawable.ic_suggestions_delete, 0, 0, 0); 2297 } else { 2298 textView.setCompoundDrawables(null, null, null, null); 2299 } 2300 2301 return textView; 2302 } 2303 } 2304 2305 private class SuggestionSpanComparator implements Comparator<SuggestionSpan> { 2306 public int compare(SuggestionSpan span1, SuggestionSpan span2) { 2307 final int flag1 = span1.getFlags(); 2308 final int flag2 = span2.getFlags(); 2309 if (flag1 != flag2) { 2310 // The order here should match what is used in updateDrawState 2311 final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 2312 final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 2313 final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0; 2314 final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0; 2315 if (easy1 && !misspelled1) return -1; 2316 if (easy2 && !misspelled2) return 1; 2317 if (misspelled1) return -1; 2318 if (misspelled2) return 1; 2319 } 2320 2321 return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue(); 2322 } 2323 } 2324 2325 /** 2326 * Returns the suggestion spans that cover the current cursor position. The suggestion 2327 * spans are sorted according to the length of text that they are attached to. 2328 */ 2329 private SuggestionSpan[] getSuggestionSpans() { 2330 int pos = mTextView.getSelectionStart(); 2331 Spannable spannable = (Spannable) mTextView.getText(); 2332 SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class); 2333 2334 mSpansLengths.clear(); 2335 for (SuggestionSpan suggestionSpan : suggestionSpans) { 2336 int start = spannable.getSpanStart(suggestionSpan); 2337 int end = spannable.getSpanEnd(suggestionSpan); 2338 mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start)); 2339 } 2340 2341 // The suggestions are sorted according to their types (easy correction first, then 2342 // misspelled) and to the length of the text that they cover (shorter first). 2343 Arrays.sort(suggestionSpans, mSuggestionSpanComparator); 2344 return suggestionSpans; 2345 } 2346 2347 @Override 2348 public void show() { 2349 if (!(mTextView.getText() instanceof Editable)) return; 2350 2351 if (updateSuggestions()) { 2352 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 2353 mTextView.setCursorVisible(false); 2354 mIsShowingUp = true; 2355 super.show(); 2356 } 2357 } 2358 2359 @Override 2360 protected void measureContent() { 2361 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2362 final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec( 2363 displayMetrics.widthPixels, View.MeasureSpec.AT_MOST); 2364 final int verticalMeasure = View.MeasureSpec.makeMeasureSpec( 2365 displayMetrics.heightPixels, View.MeasureSpec.AT_MOST); 2366 2367 int width = 0; 2368 View view = null; 2369 for (int i = 0; i < mNumberOfSuggestions; i++) { 2370 view = mSuggestionsAdapter.getView(i, view, mContentView); 2371 view.getLayoutParams().width = LayoutParams.WRAP_CONTENT; 2372 view.measure(horizontalMeasure, verticalMeasure); 2373 width = Math.max(width, view.getMeasuredWidth()); 2374 } 2375 2376 // Enforce the width based on actual text widths 2377 mContentView.measure( 2378 View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY), 2379 verticalMeasure); 2380 2381 Drawable popupBackground = mPopupWindow.getBackground(); 2382 if (popupBackground != null) { 2383 if (mTempRect == null) mTempRect = new Rect(); 2384 popupBackground.getPadding(mTempRect); 2385 width += mTempRect.left + mTempRect.right; 2386 } 2387 mPopupWindow.setWidth(width); 2388 } 2389 2390 @Override 2391 protected int getTextOffset() { 2392 return mTextView.getSelectionStart(); 2393 } 2394 2395 @Override 2396 protected int getVerticalLocalPosition(int line) { 2397 return mTextView.getLayout().getLineBottom(line); 2398 } 2399 2400 @Override 2401 protected int clipVertically(int positionY) { 2402 final int height = mContentView.getMeasuredHeight(); 2403 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2404 return Math.min(positionY, displayMetrics.heightPixels - height); 2405 } 2406 2407 @Override 2408 public void hide() { 2409 super.hide(); 2410 } 2411 2412 private boolean updateSuggestions() { 2413 Spannable spannable = (Spannable) mTextView.getText(); 2414 SuggestionSpan[] suggestionSpans = getSuggestionSpans(); 2415 2416 final int nbSpans = suggestionSpans.length; 2417 // Suggestions are shown after a delay: the underlying spans may have been removed 2418 if (nbSpans == 0) return false; 2419 2420 mNumberOfSuggestions = 0; 2421 int spanUnionStart = mTextView.getText().length(); 2422 int spanUnionEnd = 0; 2423 2424 SuggestionSpan misspelledSpan = null; 2425 int underlineColor = 0; 2426 2427 for (int spanIndex = 0; spanIndex < nbSpans; spanIndex++) { 2428 SuggestionSpan suggestionSpan = suggestionSpans[spanIndex]; 2429 final int spanStart = spannable.getSpanStart(suggestionSpan); 2430 final int spanEnd = spannable.getSpanEnd(suggestionSpan); 2431 spanUnionStart = Math.min(spanStart, spanUnionStart); 2432 spanUnionEnd = Math.max(spanEnd, spanUnionEnd); 2433 2434 if ((suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) { 2435 misspelledSpan = suggestionSpan; 2436 } 2437 2438 // The first span dictates the background color of the highlighted text 2439 if (spanIndex == 0) underlineColor = suggestionSpan.getUnderlineColor(); 2440 2441 String[] suggestions = suggestionSpan.getSuggestions(); 2442 int nbSuggestions = suggestions.length; 2443 for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) { 2444 String suggestion = suggestions[suggestionIndex]; 2445 2446 boolean suggestionIsDuplicate = false; 2447 for (int i = 0; i < mNumberOfSuggestions; i++) { 2448 if (mSuggestionInfos[i].text.toString().equals(suggestion)) { 2449 SuggestionSpan otherSuggestionSpan = mSuggestionInfos[i].suggestionSpan; 2450 final int otherSpanStart = spannable.getSpanStart(otherSuggestionSpan); 2451 final int otherSpanEnd = spannable.getSpanEnd(otherSuggestionSpan); 2452 if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) { 2453 suggestionIsDuplicate = true; 2454 break; 2455 } 2456 } 2457 } 2458 2459 if (!suggestionIsDuplicate) { 2460 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2461 suggestionInfo.suggestionSpan = suggestionSpan; 2462 suggestionInfo.suggestionIndex = suggestionIndex; 2463 suggestionInfo.text.replace(0, suggestionInfo.text.length(), suggestion); 2464 2465 mNumberOfSuggestions++; 2466 2467 if (mNumberOfSuggestions == MAX_NUMBER_SUGGESTIONS) { 2468 // Also end outer for loop 2469 spanIndex = nbSpans; 2470 break; 2471 } 2472 } 2473 } 2474 } 2475 2476 for (int i = 0; i < mNumberOfSuggestions; i++) { 2477 highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd); 2478 } 2479 2480 // Add "Add to dictionary" item if there is a span with the misspelled flag 2481 if (misspelledSpan != null) { 2482 final int misspelledStart = spannable.getSpanStart(misspelledSpan); 2483 final int misspelledEnd = spannable.getSpanEnd(misspelledSpan); 2484 if (misspelledStart >= 0 && misspelledEnd > misspelledStart) { 2485 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2486 suggestionInfo.suggestionSpan = misspelledSpan; 2487 suggestionInfo.suggestionIndex = ADD_TO_DICTIONARY; 2488 suggestionInfo.text.replace(0, suggestionInfo.text.length(), mTextView. 2489 getContext().getString(com.android.internal.R.string.addToDictionary)); 2490 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0, 2491 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2492 2493 mNumberOfSuggestions++; 2494 } 2495 } 2496 2497 // Delete item 2498 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2499 suggestionInfo.suggestionSpan = null; 2500 suggestionInfo.suggestionIndex = DELETE_TEXT; 2501 suggestionInfo.text.replace(0, suggestionInfo.text.length(), 2502 mTextView.getContext().getString(com.android.internal.R.string.deleteText)); 2503 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0, 2504 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2505 mNumberOfSuggestions++; 2506 2507 if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan(); 2508 if (underlineColor == 0) { 2509 // Fallback on the default highlight color when the first span does not provide one 2510 mSuggestionRangeSpan.setBackgroundColor(mTextView.mHighlightColor); 2511 } else { 2512 final float BACKGROUND_TRANSPARENCY = 0.4f; 2513 final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY); 2514 mSuggestionRangeSpan.setBackgroundColor( 2515 (underlineColor & 0x00FFFFFF) + (newAlpha << 24)); 2516 } 2517 spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd, 2518 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2519 2520 mSuggestionsAdapter.notifyDataSetChanged(); 2521 return true; 2522 } 2523 2524 private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart, 2525 int unionEnd) { 2526 final Spannable text = (Spannable) mTextView.getText(); 2527 final int spanStart = text.getSpanStart(suggestionInfo.suggestionSpan); 2528 final int spanEnd = text.getSpanEnd(suggestionInfo.suggestionSpan); 2529 2530 // Adjust the start/end of the suggestion span 2531 suggestionInfo.suggestionStart = spanStart - unionStart; 2532 suggestionInfo.suggestionEnd = suggestionInfo.suggestionStart 2533 + suggestionInfo.text.length(); 2534 2535 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 2536 suggestionInfo.text.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2537 2538 // Add the text before and after the span. 2539 final String textAsString = text.toString(); 2540 suggestionInfo.text.insert(0, textAsString.substring(unionStart, spanStart)); 2541 suggestionInfo.text.append(textAsString.substring(spanEnd, unionEnd)); 2542 } 2543 2544 @Override 2545 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 2546 Editable editable = (Editable) mTextView.getText(); 2547 SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 2548 2549 if (suggestionInfo.suggestionIndex == DELETE_TEXT) { 2550 final int spanUnionStart = editable.getSpanStart(mSuggestionRangeSpan); 2551 int spanUnionEnd = editable.getSpanEnd(mSuggestionRangeSpan); 2552 if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) { 2553 // Do not leave two adjacent spaces after deletion, or one at beginning of text 2554 if (spanUnionEnd < editable.length() && 2555 Character.isSpaceChar(editable.charAt(spanUnionEnd)) && 2556 (spanUnionStart == 0 || 2557 Character.isSpaceChar(editable.charAt(spanUnionStart - 1)))) { 2558 spanUnionEnd = spanUnionEnd + 1; 2559 } 2560 mTextView.deleteText_internal(spanUnionStart, spanUnionEnd); 2561 } 2562 hide(); 2563 return; 2564 } 2565 2566 final int spanStart = editable.getSpanStart(suggestionInfo.suggestionSpan); 2567 final int spanEnd = editable.getSpanEnd(suggestionInfo.suggestionSpan); 2568 if (spanStart < 0 || spanEnd <= spanStart) { 2569 // Span has been removed 2570 hide(); 2571 return; 2572 } 2573 2574 final String originalText = editable.toString().substring(spanStart, spanEnd); 2575 2576 if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY) { 2577 Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT); 2578 intent.putExtra("word", originalText); 2579 intent.putExtra("locale", mTextView.getTextServicesLocale().toString()); 2580 intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); 2581 mTextView.getContext().startActivity(intent); 2582 // There is no way to know if the word was indeed added. Re-check. 2583 // TODO The ExtractEditText should remove the span in the original text instead 2584 editable.removeSpan(suggestionInfo.suggestionSpan); 2585 updateSpellCheckSpans(spanStart, spanEnd, false); 2586 } else { 2587 // SuggestionSpans are removed by replace: save them before 2588 SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd, 2589 SuggestionSpan.class); 2590 final int length = suggestionSpans.length; 2591 int[] suggestionSpansStarts = new int[length]; 2592 int[] suggestionSpansEnds = new int[length]; 2593 int[] suggestionSpansFlags = new int[length]; 2594 for (int i = 0; i < length; i++) { 2595 final SuggestionSpan suggestionSpan = suggestionSpans[i]; 2596 suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan); 2597 suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan); 2598 suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan); 2599 2600 // Remove potential misspelled flags 2601 int suggestionSpanFlags = suggestionSpan.getFlags(); 2602 if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) > 0) { 2603 suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED; 2604 suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 2605 suggestionSpan.setFlags(suggestionSpanFlags); 2606 } 2607 } 2608 2609 final int suggestionStart = suggestionInfo.suggestionStart; 2610 final int suggestionEnd = suggestionInfo.suggestionEnd; 2611 final String suggestion = suggestionInfo.text.subSequence( 2612 suggestionStart, suggestionEnd).toString(); 2613 mTextView.replaceText_internal(spanStart, spanEnd, suggestion); 2614 2615 // Notify source IME of the suggestion pick. Do this before swaping texts. 2616 if (!TextUtils.isEmpty( 2617 suggestionInfo.suggestionSpan.getNotificationTargetClassName())) { 2618 InputMethodManager imm = InputMethodManager.peekInstance(); 2619 if (imm != null) { 2620 imm.notifySuggestionPicked(suggestionInfo.suggestionSpan, originalText, 2621 suggestionInfo.suggestionIndex); 2622 } 2623 } 2624 2625 // Swap text content between actual text and Suggestion span 2626 String[] suggestions = suggestionInfo.suggestionSpan.getSuggestions(); 2627 suggestions[suggestionInfo.suggestionIndex] = originalText; 2628 2629 // Restore previous SuggestionSpans 2630 final int lengthDifference = suggestion.length() - (spanEnd - spanStart); 2631 for (int i = 0; i < length; i++) { 2632 // Only spans that include the modified region make sense after replacement 2633 // Spans partially included in the replaced region are removed, there is no 2634 // way to assign them a valid range after replacement 2635 if (suggestionSpansStarts[i] <= spanStart && 2636 suggestionSpansEnds[i] >= spanEnd) { 2637 mTextView.setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i], 2638 suggestionSpansEnds[i] + lengthDifference, suggestionSpansFlags[i]); 2639 } 2640 } 2641 2642 // Move cursor at the end of the replaced word 2643 final int newCursorPosition = spanEnd + lengthDifference; 2644 mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); 2645 } 2646 2647 hide(); 2648 } 2649 } 2650 2651 /** 2652 * An ActionMode Callback class that is used to provide actions while in text selection mode. 2653 * 2654 * The default callback provides a subset of Select All, Cut, Copy and Paste actions, depending 2655 * on which of these this TextView supports. 2656 */ 2657 private class SelectionActionModeCallback implements ActionMode.Callback { 2658 2659 @Override 2660 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 2661 TypedArray styledAttributes = mTextView.getContext().obtainStyledAttributes( 2662 com.android.internal.R.styleable.SelectionModeDrawables); 2663 2664 boolean allowText = mTextView.getContext().getResources().getBoolean( 2665 com.android.internal.R.bool.config_allowActionMenuItemTextWithIcon); 2666 2667 mode.setTitle(mTextView.getContext().getString( 2668 com.android.internal.R.string.textSelectionCABTitle)); 2669 mode.setSubtitle(null); 2670 mode.setTitleOptionalHint(true); 2671 2672 int selectAllIconId = 0; // No icon by default 2673 if (!allowText) { 2674 // Provide an icon, text will not be displayed on smaller screens. 2675 selectAllIconId = styledAttributes.getResourceId( 2676 R.styleable.SelectionModeDrawables_actionModeSelectAllDrawable, 0); 2677 } 2678 2679 menu.add(0, TextView.ID_SELECT_ALL, 0, com.android.internal.R.string.selectAll). 2680 setIcon(selectAllIconId). 2681 setAlphabeticShortcut('a'). 2682 setShowAsAction( 2683 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2684 2685 if (mTextView.canCut()) { 2686 menu.add(0, TextView.ID_CUT, 0, com.android.internal.R.string.cut). 2687 setIcon(styledAttributes.getResourceId( 2688 R.styleable.SelectionModeDrawables_actionModeCutDrawable, 0)). 2689 setAlphabeticShortcut('x'). 2690 setShowAsAction( 2691 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2692 } 2693 2694 if (mTextView.canCopy()) { 2695 menu.add(0, TextView.ID_COPY, 0, com.android.internal.R.string.copy). 2696 setIcon(styledAttributes.getResourceId( 2697 R.styleable.SelectionModeDrawables_actionModeCopyDrawable, 0)). 2698 setAlphabeticShortcut('c'). 2699 setShowAsAction( 2700 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2701 } 2702 2703 if (mTextView.canPaste()) { 2704 menu.add(0, TextView.ID_PASTE, 0, com.android.internal.R.string.paste). 2705 setIcon(styledAttributes.getResourceId( 2706 R.styleable.SelectionModeDrawables_actionModePasteDrawable, 0)). 2707 setAlphabeticShortcut('v'). 2708 setShowAsAction( 2709 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2710 } 2711 2712 styledAttributes.recycle(); 2713 2714 if (mCustomSelectionActionModeCallback != null) { 2715 if (!mCustomSelectionActionModeCallback.onCreateActionMode(mode, menu)) { 2716 // The custom mode can choose to cancel the action mode 2717 return false; 2718 } 2719 } 2720 2721 if (menu.hasVisibleItems() || mode.getCustomView() != null) { 2722 getSelectionController().show(); 2723 return true; 2724 } else { 2725 return false; 2726 } 2727 } 2728 2729 @Override 2730 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 2731 if (mCustomSelectionActionModeCallback != null) { 2732 return mCustomSelectionActionModeCallback.onPrepareActionMode(mode, menu); 2733 } 2734 return true; 2735 } 2736 2737 @Override 2738 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 2739 if (mCustomSelectionActionModeCallback != null && 2740 mCustomSelectionActionModeCallback.onActionItemClicked(mode, item)) { 2741 return true; 2742 } 2743 return mTextView.onTextContextMenuItem(item.getItemId()); 2744 } 2745 2746 @Override 2747 public void onDestroyActionMode(ActionMode mode) { 2748 if (mCustomSelectionActionModeCallback != null) { 2749 mCustomSelectionActionModeCallback.onDestroyActionMode(mode); 2750 } 2751 Selection.setSelection((Spannable) mTextView.getText(), mTextView.getSelectionEnd()); 2752 2753 if (mSelectionModifierCursorController != null) { 2754 mSelectionModifierCursorController.hide(); 2755 } 2756 2757 mSelectionActionMode = null; 2758 } 2759 } 2760 2761 private class ActionPopupWindow extends PinnedPopupWindow implements OnClickListener { 2762 private static final int POPUP_TEXT_LAYOUT = 2763 com.android.internal.R.layout.text_edit_action_popup_text; 2764 private TextView mPasteTextView; 2765 private TextView mReplaceTextView; 2766 2767 @Override 2768 protected void createPopupWindow() { 2769 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 2770 com.android.internal.R.attr.textSelectHandleWindowStyle); 2771 mPopupWindow.setClippingEnabled(true); 2772 } 2773 2774 @Override 2775 protected void initContentView() { 2776 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 2777 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 2778 mContentView = linearLayout; 2779 mContentView.setBackgroundResource( 2780 com.android.internal.R.drawable.text_edit_paste_window); 2781 2782 LayoutInflater inflater = (LayoutInflater) mTextView.getContext(). 2783 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2784 2785 LayoutParams wrapContent = new LayoutParams( 2786 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 2787 2788 mPasteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2789 mPasteTextView.setLayoutParams(wrapContent); 2790 mContentView.addView(mPasteTextView); 2791 mPasteTextView.setText(com.android.internal.R.string.paste); 2792 mPasteTextView.setOnClickListener(this); 2793 2794 mReplaceTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2795 mReplaceTextView.setLayoutParams(wrapContent); 2796 mContentView.addView(mReplaceTextView); 2797 mReplaceTextView.setText(com.android.internal.R.string.replace); 2798 mReplaceTextView.setOnClickListener(this); 2799 } 2800 2801 @Override 2802 public void show() { 2803 boolean canPaste = mTextView.canPaste(); 2804 boolean canSuggest = mTextView.isSuggestionsEnabled() && isCursorInsideSuggestionSpan(); 2805 mPasteTextView.setVisibility(canPaste ? View.VISIBLE : View.GONE); 2806 mReplaceTextView.setVisibility(canSuggest ? View.VISIBLE : View.GONE); 2807 2808 if (!canPaste && !canSuggest) return; 2809 2810 super.show(); 2811 } 2812 2813 @Override 2814 public void onClick(View view) { 2815 if (view == mPasteTextView && mTextView.canPaste()) { 2816 mTextView.onTextContextMenuItem(TextView.ID_PASTE); 2817 hide(); 2818 } else if (view == mReplaceTextView) { 2819 int middle = (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 2820 stopSelectionActionMode(); 2821 Selection.setSelection((Spannable) mTextView.getText(), middle); 2822 showSuggestions(); 2823 } 2824 } 2825 2826 @Override 2827 protected int getTextOffset() { 2828 return (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 2829 } 2830 2831 @Override 2832 protected int getVerticalLocalPosition(int line) { 2833 return mTextView.getLayout().getLineTop(line) - mContentView.getMeasuredHeight(); 2834 } 2835 2836 @Override 2837 protected int clipVertically(int positionY) { 2838 if (positionY < 0) { 2839 final int offset = getTextOffset(); 2840 final Layout layout = mTextView.getLayout(); 2841 final int line = layout.getLineForOffset(offset); 2842 positionY += layout.getLineBottom(line) - layout.getLineTop(line); 2843 positionY += mContentView.getMeasuredHeight(); 2844 2845 // Assumes insertion and selection handles share the same height 2846 final Drawable handle = mTextView.getResources().getDrawable( 2847 mTextView.mTextSelectHandleRes); 2848 positionY += handle.getIntrinsicHeight(); 2849 } 2850 2851 return positionY; 2852 } 2853 } 2854 2855 private abstract class HandleView extends View implements TextViewPositionListener { 2856 protected Drawable mDrawable; 2857 protected Drawable mDrawableLtr; 2858 protected Drawable mDrawableRtl; 2859 private final PopupWindow mContainer; 2860 // Position with respect to the parent TextView 2861 private int mPositionX, mPositionY; 2862 private boolean mIsDragging; 2863 // Offset from touch position to mPosition 2864 private float mTouchToWindowOffsetX, mTouchToWindowOffsetY; 2865 protected int mHotspotX; 2866 // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up 2867 private float mTouchOffsetY; 2868 // Where the touch position should be on the handle to ensure a maximum cursor visibility 2869 private float mIdealVerticalOffset; 2870 // Parent's (TextView) previous position in window 2871 private int mLastParentX, mLastParentY; 2872 // Transient action popup window for Paste and Replace actions 2873 protected ActionPopupWindow mActionPopupWindow; 2874 // Previous text character offset 2875 private int mPreviousOffset = -1; 2876 // Previous text character offset 2877 private boolean mPositionHasChanged = true; 2878 // Used to delay the appearance of the action popup window 2879 private Runnable mActionPopupShower; 2880 2881 public HandleView(Drawable drawableLtr, Drawable drawableRtl) { 2882 super(mTextView.getContext()); 2883 mContainer = new PopupWindow(mTextView.getContext(), null, 2884 com.android.internal.R.attr.textSelectHandleWindowStyle); 2885 mContainer.setSplitTouchEnabled(true); 2886 mContainer.setClippingEnabled(false); 2887 mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 2888 mContainer.setContentView(this); 2889 2890 mDrawableLtr = drawableLtr; 2891 mDrawableRtl = drawableRtl; 2892 2893 updateDrawable(); 2894 2895 final int handleHeight = mDrawable.getIntrinsicHeight(); 2896 mTouchOffsetY = -0.3f * handleHeight; 2897 mIdealVerticalOffset = 0.7f * handleHeight; 2898 } 2899 2900 protected void updateDrawable() { 2901 final int offset = getCurrentCursorOffset(); 2902 final boolean isRtlCharAtOffset = mTextView.getLayout().isRtlCharAt(offset); 2903 mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr; 2904 mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset); 2905 } 2906 2907 protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun); 2908 2909 // Touch-up filter: number of previous positions remembered 2910 private static final int HISTORY_SIZE = 5; 2911 private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150; 2912 private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350; 2913 private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; 2914 private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; 2915 private int mPreviousOffsetIndex = 0; 2916 private int mNumberPreviousOffsets = 0; 2917 2918 private void startTouchUpFilter(int offset) { 2919 mNumberPreviousOffsets = 0; 2920 addPositionToTouchUpFilter(offset); 2921 } 2922 2923 private void addPositionToTouchUpFilter(int offset) { 2924 mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; 2925 mPreviousOffsets[mPreviousOffsetIndex] = offset; 2926 mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); 2927 mNumberPreviousOffsets++; 2928 } 2929 2930 private void filterOnTouchUp() { 2931 final long now = SystemClock.uptimeMillis(); 2932 int i = 0; 2933 int index = mPreviousOffsetIndex; 2934 final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); 2935 while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) { 2936 i++; 2937 index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; 2938 } 2939 2940 if (i > 0 && i < iMax && 2941 (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) { 2942 positionAtCursorOffset(mPreviousOffsets[index], false); 2943 } 2944 } 2945 2946 public boolean offsetHasBeenChanged() { 2947 return mNumberPreviousOffsets > 1; 2948 } 2949 2950 @Override 2951 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 2952 setMeasuredDimension(mDrawable.getIntrinsicWidth(), mDrawable.getIntrinsicHeight()); 2953 } 2954 2955 public void show() { 2956 if (isShowing()) return; 2957 2958 getPositionListener().addSubscriber(this, true /* local position may change */); 2959 2960 // Make sure the offset is always considered new, even when focusing at same position 2961 mPreviousOffset = -1; 2962 positionAtCursorOffset(getCurrentCursorOffset(), false); 2963 2964 hideActionPopupWindow(); 2965 } 2966 2967 protected void dismiss() { 2968 mIsDragging = false; 2969 mContainer.dismiss(); 2970 onDetached(); 2971 } 2972 2973 public void hide() { 2974 dismiss(); 2975 2976 getPositionListener().removeSubscriber(this); 2977 } 2978 2979 void showActionPopupWindow(int delay) { 2980 if (mActionPopupWindow == null) { 2981 mActionPopupWindow = new ActionPopupWindow(); 2982 } 2983 if (mActionPopupShower == null) { 2984 mActionPopupShower = new Runnable() { 2985 public void run() { 2986 mActionPopupWindow.show(); 2987 } 2988 }; 2989 } else { 2990 mTextView.removeCallbacks(mActionPopupShower); 2991 } 2992 mTextView.postDelayed(mActionPopupShower, delay); 2993 } 2994 2995 protected void hideActionPopupWindow() { 2996 if (mActionPopupShower != null) { 2997 mTextView.removeCallbacks(mActionPopupShower); 2998 } 2999 if (mActionPopupWindow != null) { 3000 mActionPopupWindow.hide(); 3001 } 3002 } 3003 3004 public boolean isShowing() { 3005 return mContainer.isShowing(); 3006 } 3007 3008 private boolean isVisible() { 3009 // Always show a dragging handle. 3010 if (mIsDragging) { 3011 return true; 3012 } 3013 3014 if (mTextView.isInBatchEditMode()) { 3015 return false; 3016 } 3017 3018 return isPositionVisible(mPositionX + mHotspotX, mPositionY); 3019 } 3020 3021 public abstract int getCurrentCursorOffset(); 3022 3023 protected abstract void updateSelection(int offset); 3024 3025 public abstract void updatePosition(float x, float y); 3026 3027 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 3028 // A HandleView relies on the layout, which may be nulled by external methods 3029 Layout layout = mTextView.getLayout(); 3030 if (layout == null) { 3031 // Will update controllers' state, hiding them and stopping selection mode if needed 3032 prepareCursorControllers(); 3033 return; 3034 } 3035 3036 boolean offsetChanged = offset != mPreviousOffset; 3037 if (offsetChanged || parentScrolled) { 3038 if (offsetChanged) { 3039 updateSelection(offset); 3040 addPositionToTouchUpFilter(offset); 3041 } 3042 final int line = layout.getLineForOffset(offset); 3043 3044 mPositionX = (int) (layout.getPrimaryHorizontal(offset) - 0.5f - mHotspotX); 3045 mPositionY = layout.getLineBottom(line); 3046 3047 // Take TextView's padding and scroll into account. 3048 mPositionX += mTextView.viewportToContentHorizontalOffset(); 3049 mPositionY += mTextView.viewportToContentVerticalOffset(); 3050 3051 mPreviousOffset = offset; 3052 mPositionHasChanged = true; 3053 } 3054 } 3055 3056 public void updatePosition(int parentPositionX, int parentPositionY, 3057 boolean parentPositionChanged, boolean parentScrolled) { 3058 positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled); 3059 if (parentPositionChanged || mPositionHasChanged) { 3060 if (mIsDragging) { 3061 // Update touchToWindow offset in case of parent scrolling while dragging 3062 if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) { 3063 mTouchToWindowOffsetX += parentPositionX - mLastParentX; 3064 mTouchToWindowOffsetY += parentPositionY - mLastParentY; 3065 mLastParentX = parentPositionX; 3066 mLastParentY = parentPositionY; 3067 } 3068 3069 onHandleMoved(); 3070 } 3071 3072 if (isVisible()) { 3073 final int positionX = parentPositionX + mPositionX; 3074 final int positionY = parentPositionY + mPositionY; 3075 if (isShowing()) { 3076 mContainer.update(positionX, positionY, -1, -1); 3077 } else { 3078 mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, 3079 positionX, positionY); 3080 } 3081 } else { 3082 if (isShowing()) { 3083 dismiss(); 3084 } 3085 } 3086 3087 mPositionHasChanged = false; 3088 } 3089 } 3090 3091 @Override 3092 protected void onDraw(Canvas c) { 3093 mDrawable.setBounds(0, 0, mRight - mLeft, mBottom - mTop); 3094 mDrawable.draw(c); 3095 } 3096 3097 @Override 3098 public boolean onTouchEvent(MotionEvent ev) { 3099 switch (ev.getActionMasked()) { 3100 case MotionEvent.ACTION_DOWN: { 3101 startTouchUpFilter(getCurrentCursorOffset()); 3102 mTouchToWindowOffsetX = ev.getRawX() - mPositionX; 3103 mTouchToWindowOffsetY = ev.getRawY() - mPositionY; 3104 3105 final PositionListener positionListener = getPositionListener(); 3106 mLastParentX = positionListener.getPositionX(); 3107 mLastParentY = positionListener.getPositionY(); 3108 mIsDragging = true; 3109 break; 3110 } 3111 3112 case MotionEvent.ACTION_MOVE: { 3113 final float rawX = ev.getRawX(); 3114 final float rawY = ev.getRawY(); 3115 3116 // Vertical hysteresis: vertical down movement tends to snap to ideal offset 3117 final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY; 3118 final float currentVerticalOffset = rawY - mPositionY - mLastParentY; 3119 float newVerticalOffset; 3120 if (previousVerticalOffset < mIdealVerticalOffset) { 3121 newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset); 3122 newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset); 3123 } else { 3124 newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset); 3125 newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset); 3126 } 3127 mTouchToWindowOffsetY = newVerticalOffset + mLastParentY; 3128 3129 final float newPosX = rawX - mTouchToWindowOffsetX + mHotspotX; 3130 final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY; 3131 3132 updatePosition(newPosX, newPosY); 3133 break; 3134 } 3135 3136 case MotionEvent.ACTION_UP: 3137 filterOnTouchUp(); 3138 mIsDragging = false; 3139 break; 3140 3141 case MotionEvent.ACTION_CANCEL: 3142 mIsDragging = false; 3143 break; 3144 } 3145 return true; 3146 } 3147 3148 public boolean isDragging() { 3149 return mIsDragging; 3150 } 3151 3152 void onHandleMoved() { 3153 hideActionPopupWindow(); 3154 } 3155 3156 public void onDetached() { 3157 hideActionPopupWindow(); 3158 } 3159 } 3160 3161 private class InsertionHandleView extends HandleView { 3162 private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000; 3163 private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds 3164 3165 // Used to detect taps on the insertion handle, which will affect the ActionPopupWindow 3166 private float mDownPositionX, mDownPositionY; 3167 private Runnable mHider; 3168 3169 public InsertionHandleView(Drawable drawable) { 3170 super(drawable, drawable); 3171 } 3172 3173 @Override 3174 public void show() { 3175 super.show(); 3176 3177 final long durationSinceCutOrCopy = 3178 SystemClock.uptimeMillis() - TextView.LAST_CUT_OR_COPY_TIME; 3179 if (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION) { 3180 showActionPopupWindow(0); 3181 } 3182 3183 hideAfterDelay(); 3184 } 3185 3186 public void showWithActionPopup() { 3187 show(); 3188 showActionPopupWindow(0); 3189 } 3190 3191 private void hideAfterDelay() { 3192 if (mHider == null) { 3193 mHider = new Runnable() { 3194 public void run() { 3195 hide(); 3196 } 3197 }; 3198 } else { 3199 removeHiderCallback(); 3200 } 3201 mTextView.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT); 3202 } 3203 3204 private void removeHiderCallback() { 3205 if (mHider != null) { 3206 mTextView.removeCallbacks(mHider); 3207 } 3208 } 3209 3210 @Override 3211 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3212 return drawable.getIntrinsicWidth() / 2; 3213 } 3214 3215 @Override 3216 public boolean onTouchEvent(MotionEvent ev) { 3217 final boolean result = super.onTouchEvent(ev); 3218 3219 switch (ev.getActionMasked()) { 3220 case MotionEvent.ACTION_DOWN: 3221 mDownPositionX = ev.getRawX(); 3222 mDownPositionY = ev.getRawY(); 3223 break; 3224 3225 case MotionEvent.ACTION_UP: 3226 if (!offsetHasBeenChanged()) { 3227 final float deltaX = mDownPositionX - ev.getRawX(); 3228 final float deltaY = mDownPositionY - ev.getRawY(); 3229 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3230 3231 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 3232 mTextView.getContext()); 3233 final int touchSlop = viewConfiguration.getScaledTouchSlop(); 3234 3235 if (distanceSquared < touchSlop * touchSlop) { 3236 if (mActionPopupWindow != null && mActionPopupWindow.isShowing()) { 3237 // Tapping on the handle dismisses the displayed action popup 3238 mActionPopupWindow.hide(); 3239 } else { 3240 showWithActionPopup(); 3241 } 3242 } 3243 } 3244 hideAfterDelay(); 3245 break; 3246 3247 case MotionEvent.ACTION_CANCEL: 3248 hideAfterDelay(); 3249 break; 3250 3251 default: 3252 break; 3253 } 3254 3255 return result; 3256 } 3257 3258 @Override 3259 public int getCurrentCursorOffset() { 3260 return mTextView.getSelectionStart(); 3261 } 3262 3263 @Override 3264 public void updateSelection(int offset) { 3265 Selection.setSelection((Spannable) mTextView.getText(), offset); 3266 } 3267 3268 @Override 3269 public void updatePosition(float x, float y) { 3270 positionAtCursorOffset(mTextView.getOffsetForPosition(x, y), false); 3271 } 3272 3273 @Override 3274 void onHandleMoved() { 3275 super.onHandleMoved(); 3276 removeHiderCallback(); 3277 } 3278 3279 @Override 3280 public void onDetached() { 3281 super.onDetached(); 3282 removeHiderCallback(); 3283 } 3284 } 3285 3286 private class SelectionStartHandleView extends HandleView { 3287 3288 public SelectionStartHandleView(Drawable drawableLtr, Drawable drawableRtl) { 3289 super(drawableLtr, drawableRtl); 3290 } 3291 3292 @Override 3293 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3294 if (isRtlRun) { 3295 return drawable.getIntrinsicWidth() / 4; 3296 } else { 3297 return (drawable.getIntrinsicWidth() * 3) / 4; 3298 } 3299 } 3300 3301 @Override 3302 public int getCurrentCursorOffset() { 3303 return mTextView.getSelectionStart(); 3304 } 3305 3306 @Override 3307 public void updateSelection(int offset) { 3308 Selection.setSelection((Spannable) mTextView.getText(), offset, 3309 mTextView.getSelectionEnd()); 3310 updateDrawable(); 3311 } 3312 3313 @Override 3314 public void updatePosition(float x, float y) { 3315 int offset = mTextView.getOffsetForPosition(x, y); 3316 3317 // Handles can not cross and selection is at least one character 3318 final int selectionEnd = mTextView.getSelectionEnd(); 3319 if (offset >= selectionEnd) offset = Math.max(0, selectionEnd - 1); 3320 3321 positionAtCursorOffset(offset, false); 3322 } 3323 3324 public ActionPopupWindow getActionPopupWindow() { 3325 return mActionPopupWindow; 3326 } 3327 } 3328 3329 private class SelectionEndHandleView extends HandleView { 3330 3331 public SelectionEndHandleView(Drawable drawableLtr, Drawable drawableRtl) { 3332 super(drawableLtr, drawableRtl); 3333 } 3334 3335 @Override 3336 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3337 if (isRtlRun) { 3338 return (drawable.getIntrinsicWidth() * 3) / 4; 3339 } else { 3340 return drawable.getIntrinsicWidth() / 4; 3341 } 3342 } 3343 3344 @Override 3345 public int getCurrentCursorOffset() { 3346 return mTextView.getSelectionEnd(); 3347 } 3348 3349 @Override 3350 public void updateSelection(int offset) { 3351 Selection.setSelection((Spannable) mTextView.getText(), 3352 mTextView.getSelectionStart(), offset); 3353 updateDrawable(); 3354 } 3355 3356 @Override 3357 public void updatePosition(float x, float y) { 3358 int offset = mTextView.getOffsetForPosition(x, y); 3359 3360 // Handles can not cross and selection is at least one character 3361 final int selectionStart = mTextView.getSelectionStart(); 3362 if (offset <= selectionStart) { 3363 offset = Math.min(selectionStart + 1, mTextView.getText().length()); 3364 } 3365 3366 positionAtCursorOffset(offset, false); 3367 } 3368 3369 public void setActionPopupWindow(ActionPopupWindow actionPopupWindow) { 3370 mActionPopupWindow = actionPopupWindow; 3371 } 3372 } 3373 3374 /** 3375 * A CursorController instance can be used to control a cursor in the text. 3376 */ 3377 private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { 3378 /** 3379 * Makes the cursor controller visible on screen. 3380 * See also {@link #hide()}. 3381 */ 3382 public void show(); 3383 3384 /** 3385 * Hide the cursor controller from screen. 3386 * See also {@link #show()}. 3387 */ 3388 public void hide(); 3389 3390 /** 3391 * Called when the view is detached from window. Perform house keeping task, such as 3392 * stopping Runnable thread that would otherwise keep a reference on the context, thus 3393 * preventing the activity from being recycled. 3394 */ 3395 public void onDetached(); 3396 } 3397 3398 private class InsertionPointCursorController implements CursorController { 3399 private InsertionHandleView mHandle; 3400 3401 public void show() { 3402 getHandle().show(); 3403 } 3404 3405 public void showWithActionPopup() { 3406 getHandle().showWithActionPopup(); 3407 } 3408 3409 public void hide() { 3410 if (mHandle != null) { 3411 mHandle.hide(); 3412 } 3413 } 3414 3415 public void onTouchModeChanged(boolean isInTouchMode) { 3416 if (!isInTouchMode) { 3417 hide(); 3418 } 3419 } 3420 3421 private InsertionHandleView getHandle() { 3422 if (mSelectHandleCenter == null) { 3423 mSelectHandleCenter = mTextView.getResources().getDrawable( 3424 mTextView.mTextSelectHandleRes); 3425 } 3426 if (mHandle == null) { 3427 mHandle = new InsertionHandleView(mSelectHandleCenter); 3428 } 3429 return mHandle; 3430 } 3431 3432 @Override 3433 public void onDetached() { 3434 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 3435 observer.removeOnTouchModeChangeListener(this); 3436 3437 if (mHandle != null) mHandle.onDetached(); 3438 } 3439 } 3440 3441 class SelectionModifierCursorController implements CursorController { 3442 private static final int DELAY_BEFORE_REPLACE_ACTION = 200; // milliseconds 3443 // The cursor controller handles, lazily created when shown. 3444 private SelectionStartHandleView mStartHandle; 3445 private SelectionEndHandleView mEndHandle; 3446 // The offsets of that last touch down event. Remembered to start selection there. 3447 private int mMinTouchOffset, mMaxTouchOffset; 3448 3449 // Double tap detection 3450 private long mPreviousTapUpTime = 0; 3451 private float mDownPositionX, mDownPositionY; 3452 private boolean mGestureStayedInTapRegion; 3453 3454 SelectionModifierCursorController() { 3455 resetTouchOffsets(); 3456 } 3457 3458 public void show() { 3459 if (mTextView.isInBatchEditMode()) { 3460 return; 3461 } 3462 initDrawables(); 3463 initHandles(); 3464 hideInsertionPointCursorController(); 3465 } 3466 3467 private void initDrawables() { 3468 if (mSelectHandleLeft == null) { 3469 mSelectHandleLeft = mTextView.getContext().getResources().getDrawable( 3470 mTextView.mTextSelectHandleLeftRes); 3471 } 3472 if (mSelectHandleRight == null) { 3473 mSelectHandleRight = mTextView.getContext().getResources().getDrawable( 3474 mTextView.mTextSelectHandleRightRes); 3475 } 3476 } 3477 3478 private void initHandles() { 3479 // Lazy object creation has to be done before updatePosition() is called. 3480 if (mStartHandle == null) { 3481 mStartHandle = new SelectionStartHandleView(mSelectHandleLeft, mSelectHandleRight); 3482 } 3483 if (mEndHandle == null) { 3484 mEndHandle = new SelectionEndHandleView(mSelectHandleRight, mSelectHandleLeft); 3485 } 3486 3487 mStartHandle.show(); 3488 mEndHandle.show(); 3489 3490 // Make sure both left and right handles share the same ActionPopupWindow (so that 3491 // moving any of the handles hides the action popup). 3492 mStartHandle.showActionPopupWindow(DELAY_BEFORE_REPLACE_ACTION); 3493 mEndHandle.setActionPopupWindow(mStartHandle.getActionPopupWindow()); 3494 3495 hideInsertionPointCursorController(); 3496 } 3497 3498 public void hide() { 3499 if (mStartHandle != null) mStartHandle.hide(); 3500 if (mEndHandle != null) mEndHandle.hide(); 3501 } 3502 3503 public void onTouchEvent(MotionEvent event) { 3504 // This is done even when the View does not have focus, so that long presses can start 3505 // selection and tap can move cursor from this tap position. 3506 switch (event.getActionMasked()) { 3507 case MotionEvent.ACTION_DOWN: 3508 final float x = event.getX(); 3509 final float y = event.getY(); 3510 3511 // Remember finger down position, to be able to start selection from there 3512 mMinTouchOffset = mMaxTouchOffset = mTextView.getOffsetForPosition(x, y); 3513 3514 // Double tap detection 3515 if (mGestureStayedInTapRegion) { 3516 long duration = SystemClock.uptimeMillis() - mPreviousTapUpTime; 3517 if (duration <= ViewConfiguration.getDoubleTapTimeout()) { 3518 final float deltaX = x - mDownPositionX; 3519 final float deltaY = y - mDownPositionY; 3520 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3521 3522 ViewConfiguration viewConfiguration = ViewConfiguration.get( 3523 mTextView.getContext()); 3524 int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop(); 3525 boolean stayedInArea = distanceSquared < doubleTapSlop * doubleTapSlop; 3526 3527 if (stayedInArea && isPositionOnText(x, y)) { 3528 startSelectionActionMode(); 3529 mDiscardNextActionUp = true; 3530 } 3531 } 3532 } 3533 3534 mDownPositionX = x; 3535 mDownPositionY = y; 3536 mGestureStayedInTapRegion = true; 3537 break; 3538 3539 case MotionEvent.ACTION_POINTER_DOWN: 3540 case MotionEvent.ACTION_POINTER_UP: 3541 // Handle multi-point gestures. Keep min and max offset positions. 3542 // Only activated for devices that correctly handle multi-touch. 3543 if (mTextView.getContext().getPackageManager().hasSystemFeature( 3544 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { 3545 updateMinAndMaxOffsets(event); 3546 } 3547 break; 3548 3549 case MotionEvent.ACTION_MOVE: 3550 if (mGestureStayedInTapRegion) { 3551 final float deltaX = event.getX() - mDownPositionX; 3552 final float deltaY = event.getY() - mDownPositionY; 3553 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3554 3555 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 3556 mTextView.getContext()); 3557 int doubleTapTouchSlop = viewConfiguration.getScaledDoubleTapTouchSlop(); 3558 3559 if (distanceSquared > doubleTapTouchSlop * doubleTapTouchSlop) { 3560 mGestureStayedInTapRegion = false; 3561 } 3562 } 3563 break; 3564 3565 case MotionEvent.ACTION_UP: 3566 mPreviousTapUpTime = SystemClock.uptimeMillis(); 3567 break; 3568 } 3569 } 3570 3571 /** 3572 * @param event 3573 */ 3574 private void updateMinAndMaxOffsets(MotionEvent event) { 3575 int pointerCount = event.getPointerCount(); 3576 for (int index = 0; index < pointerCount; index++) { 3577 int offset = mTextView.getOffsetForPosition(event.getX(index), event.getY(index)); 3578 if (offset < mMinTouchOffset) mMinTouchOffset = offset; 3579 if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; 3580 } 3581 } 3582 3583 public int getMinTouchOffset() { 3584 return mMinTouchOffset; 3585 } 3586 3587 public int getMaxTouchOffset() { 3588 return mMaxTouchOffset; 3589 } 3590 3591 public void resetTouchOffsets() { 3592 mMinTouchOffset = mMaxTouchOffset = -1; 3593 } 3594 3595 /** 3596 * @return true iff this controller is currently used to move the selection start. 3597 */ 3598 public boolean isSelectionStartDragged() { 3599 return mStartHandle != null && mStartHandle.isDragging(); 3600 } 3601 3602 public void onTouchModeChanged(boolean isInTouchMode) { 3603 if (!isInTouchMode) { 3604 hide(); 3605 } 3606 } 3607 3608 @Override 3609 public void onDetached() { 3610 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 3611 observer.removeOnTouchModeChangeListener(this); 3612 3613 if (mStartHandle != null) mStartHandle.onDetached(); 3614 if (mEndHandle != null) mEndHandle.onDetached(); 3615 } 3616 } 3617 3618 private class CorrectionHighlighter { 3619 private final Path mPath = new Path(); 3620 private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 3621 private int mStart, mEnd; 3622 private long mFadingStartTime; 3623 private RectF mTempRectF; 3624 private final static int FADE_OUT_DURATION = 400; 3625 3626 public CorrectionHighlighter() { 3627 mPaint.setCompatibilityScaling(mTextView.getResources().getCompatibilityInfo(). 3628 applicationScale); 3629 mPaint.setStyle(Paint.Style.FILL); 3630 } 3631 3632 public void highlight(CorrectionInfo info) { 3633 mStart = info.getOffset(); 3634 mEnd = mStart + info.getNewText().length(); 3635 mFadingStartTime = SystemClock.uptimeMillis(); 3636 3637 if (mStart < 0 || mEnd < 0) { 3638 stopAnimation(); 3639 } 3640 } 3641 3642 public void draw(Canvas canvas, int cursorOffsetVertical) { 3643 if (updatePath() && updatePaint()) { 3644 if (cursorOffsetVertical != 0) { 3645 canvas.translate(0, cursorOffsetVertical); 3646 } 3647 3648 canvas.drawPath(mPath, mPaint); 3649 3650 if (cursorOffsetVertical != 0) { 3651 canvas.translate(0, -cursorOffsetVertical); 3652 } 3653 invalidate(true); // TODO invalidate cursor region only 3654 } else { 3655 stopAnimation(); 3656 invalidate(false); // TODO invalidate cursor region only 3657 } 3658 } 3659 3660 private boolean updatePaint() { 3661 final long duration = SystemClock.uptimeMillis() - mFadingStartTime; 3662 if (duration > FADE_OUT_DURATION) return false; 3663 3664 final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; 3665 final int highlightColorAlpha = Color.alpha(mTextView.mHighlightColor); 3666 final int color = (mTextView.mHighlightColor & 0x00FFFFFF) + 3667 ((int) (highlightColorAlpha * coef) << 24); 3668 mPaint.setColor(color); 3669 return true; 3670 } 3671 3672 private boolean updatePath() { 3673 final Layout layout = mTextView.getLayout(); 3674 if (layout == null) return false; 3675 3676 // Update in case text is edited while the animation is run 3677 final int length = mTextView.getText().length(); 3678 int start = Math.min(length, mStart); 3679 int end = Math.min(length, mEnd); 3680 3681 mPath.reset(); 3682 layout.getSelectionPath(start, end, mPath); 3683 return true; 3684 } 3685 3686 private void invalidate(boolean delayed) { 3687 if (mTextView.getLayout() == null) return; 3688 3689 if (mTempRectF == null) mTempRectF = new RectF(); 3690 mPath.computeBounds(mTempRectF, false); 3691 3692 int left = mTextView.getCompoundPaddingLeft(); 3693 int top = mTextView.getExtendedPaddingTop() + mTextView.getVerticalOffset(true); 3694 3695 if (delayed) { 3696 mTextView.postInvalidateOnAnimation( 3697 left + (int) mTempRectF.left, top + (int) mTempRectF.top, 3698 left + (int) mTempRectF.right, top + (int) mTempRectF.bottom); 3699 } else { 3700 mTextView.postInvalidate((int) mTempRectF.left, (int) mTempRectF.top, 3701 (int) mTempRectF.right, (int) mTempRectF.bottom); 3702 } 3703 } 3704 3705 private void stopAnimation() { 3706 Editor.this.mCorrectionHighlighter = null; 3707 } 3708 } 3709 3710 private static class ErrorPopup extends PopupWindow { 3711 private boolean mAbove = false; 3712 private final TextView mView; 3713 private int mPopupInlineErrorBackgroundId = 0; 3714 private int mPopupInlineErrorAboveBackgroundId = 0; 3715 3716 ErrorPopup(TextView v, int width, int height) { 3717 super(v, width, height); 3718 mView = v; 3719 // Make sure the TextView has a background set as it will be used the first time it is 3720 // shown and positionned. Initialized with below background, which should have 3721 // dimensions identical to the above version for this to work (and is more likely). 3722 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 3723 com.android.internal.R.styleable.Theme_errorMessageBackground); 3724 mView.setBackgroundResource(mPopupInlineErrorBackgroundId); 3725 } 3726 3727 void fixDirection(boolean above) { 3728 mAbove = above; 3729 3730 if (above) { 3731 mPopupInlineErrorAboveBackgroundId = 3732 getResourceId(mPopupInlineErrorAboveBackgroundId, 3733 com.android.internal.R.styleable.Theme_errorMessageAboveBackground); 3734 } else { 3735 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 3736 com.android.internal.R.styleable.Theme_errorMessageBackground); 3737 } 3738 3739 mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId : 3740 mPopupInlineErrorBackgroundId); 3741 } 3742 3743 private int getResourceId(int currentId, int index) { 3744 if (currentId == 0) { 3745 TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( 3746 R.styleable.Theme); 3747 currentId = styledAttributes.getResourceId(index, 0); 3748 styledAttributes.recycle(); 3749 } 3750 return currentId; 3751 } 3752 3753 @Override 3754 public void update(int x, int y, int w, int h, boolean force) { 3755 super.update(x, y, w, h, force); 3756 3757 boolean above = isAboveAnchor(); 3758 if (above != mAbove) { 3759 fixDirection(above); 3760 } 3761 } 3762 } 3763 3764 static class InputContentType { 3765 int imeOptions = EditorInfo.IME_NULL; 3766 String privateImeOptions; 3767 CharSequence imeActionLabel; 3768 int imeActionId; 3769 Bundle extras; 3770 OnEditorActionListener onEditorActionListener; 3771 boolean enterDown; 3772 } 3773 3774 static class InputMethodState { 3775 Rect mCursorRectInWindow = new Rect(); 3776 RectF mTmpRectF = new RectF(); 3777 float[] mTmpOffset = new float[2]; 3778 ExtractedTextRequest mExtracting; 3779 final ExtractedText mTmpExtracted = new ExtractedText(); 3780 int mBatchEditNesting; 3781 boolean mCursorChanged; 3782 boolean mSelectionModeChanged; 3783 boolean mContentChanged; 3784 int mChangedStart, mChangedEnd, mChangedDelta; 3785 } 3786} 3787