Editor.java revision c62589cbecef6e748bcc6c6f4ea6a8ff7656923f
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.method.KeyListener; 51import android.text.method.MetaKeyKeyListener; 52import android.text.method.MovementMethod; 53import android.text.method.PasswordTransformationMethod; 54import android.text.method.WordIterator; 55import android.text.style.EasyEditSpan; 56import android.text.style.SuggestionRangeSpan; 57import android.text.style.SuggestionSpan; 58import android.text.style.TextAppearanceSpan; 59import android.text.style.URLSpan; 60import android.util.DisplayMetrics; 61import android.util.Log; 62import android.view.ActionMode; 63import android.view.ActionMode.Callback; 64import android.view.DisplayList; 65import android.view.DragEvent; 66import android.view.Gravity; 67import android.view.HardwareCanvas; 68import android.view.LayoutInflater; 69import android.view.Menu; 70import android.view.MenuItem; 71import android.view.MotionEvent; 72import android.view.View; 73import android.view.ViewConfiguration; 74import android.view.ViewGroup; 75import android.view.View.DragShadowBuilder; 76import android.view.View.OnClickListener; 77import android.view.ViewGroup.LayoutParams; 78import android.view.ViewParent; 79import android.view.ViewTreeObserver; 80import android.view.WindowManager; 81import android.view.inputmethod.CorrectionInfo; 82import android.view.inputmethod.EditorInfo; 83import android.view.inputmethod.ExtractedText; 84import android.view.inputmethod.ExtractedTextRequest; 85import android.view.inputmethod.InputConnection; 86import android.view.inputmethod.InputMethodManager; 87import android.widget.AdapterView.OnItemClickListener; 88import android.widget.TextView.Drawables; 89import android.widget.TextView.OnEditorActionListener; 90 91import com.android.internal.util.ArrayUtils; 92import com.android.internal.widget.EditableInputConnection; 93 94import java.text.BreakIterator; 95import java.util.Arrays; 96import java.util.Comparator; 97import java.util.HashMap; 98 99/** 100 * Helper class used by TextView to handle editable text views. 101 * 102 * @hide 103 */ 104public class Editor { 105 static final int BLINK = 500; 106 private static final float[] TEMP_POSITION = new float[2]; 107 private static int DRAG_SHADOW_MAX_TEXT_LENGTH = 20; 108 109 // Cursor Controllers. 110 InsertionPointCursorController mInsertionPointCursorController; 111 SelectionModifierCursorController mSelectionModifierCursorController; 112 ActionMode mSelectionActionMode; 113 boolean mInsertionControllerEnabled; 114 boolean mSelectionControllerEnabled; 115 116 // Used to highlight a word when it is corrected by the IME 117 CorrectionHighlighter mCorrectionHighlighter; 118 119 InputContentType mInputContentType; 120 InputMethodState mInputMethodState; 121 122 DisplayList[] mTextDisplayLists; 123 124 boolean mFrozenWithFocus; 125 boolean mSelectionMoved; 126 boolean mTouchFocusSelected; 127 128 KeyListener mKeyListener; 129 int mInputType = EditorInfo.TYPE_NULL; 130 131 boolean mDiscardNextActionUp; 132 boolean mIgnoreActionUpEvent; 133 134 long mShowCursor; 135 Blink mBlink; 136 137 boolean mCursorVisible = true; 138 boolean mSelectAllOnFocus; 139 boolean mTextIsSelectable; 140 141 CharSequence mError; 142 boolean mErrorWasChanged; 143 ErrorPopup mErrorPopup; 144 /** 145 * This flag is set if the TextView tries to display an error before it 146 * is attached to the window (so its position is still unknown). 147 * It causes the error to be shown later, when onAttachedToWindow() 148 * is called. 149 */ 150 boolean mShowErrorAfterAttach; 151 152 boolean mInBatchEditControllers; 153 154 SuggestionsPopupWindow mSuggestionsPopupWindow; 155 SuggestionRangeSpan mSuggestionRangeSpan; 156 Runnable mShowSuggestionRunnable; 157 158 final Drawable[] mCursorDrawable = new Drawable[2]; 159 int mCursorCount; // Current number of used mCursorDrawable: 0 (resource=0), 1 or 2 (split) 160 161 private Drawable mSelectHandleLeft; 162 private Drawable mSelectHandleRight; 163 private Drawable mSelectHandleCenter; 164 165 // Global listener that detects changes in the global position of the TextView 166 private PositionListener mPositionListener; 167 168 float mLastDownPositionX, mLastDownPositionY; 169 Callback mCustomSelectionActionModeCallback; 170 171 // Set when this TextView gained focus with some text selected. Will start selection mode. 172 boolean mCreatedWithASelection; 173 174 private EasyEditSpanController mEasyEditSpanController; 175 176 WordIterator mWordIterator; 177 SpellChecker mSpellChecker; 178 179 private Rect mTempRect; 180 181 private TextView mTextView; 182 183 Editor(TextView textView) { 184 mTextView = textView; 185 } 186 187 void onAttachedToWindow() { 188 if (mShowErrorAfterAttach) { 189 showError(); 190 mShowErrorAfterAttach = false; 191 } 192 193 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 194 // No need to create the controller. 195 // The get method will add the listener on controller creation. 196 if (mInsertionPointCursorController != null) { 197 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 198 } 199 if (mSelectionModifierCursorController != null) { 200 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 201 } 202 updateSpellCheckSpans(0, mTextView.getText().length(), 203 true /* create the spell checker if needed */); 204 } 205 206 void onDetachedFromWindow() { 207 if (mError != null) { 208 hideError(); 209 } 210 211 if (mBlink != null) { 212 mBlink.removeCallbacks(mBlink); 213 } 214 215 if (mInsertionPointCursorController != null) { 216 mInsertionPointCursorController.onDetached(); 217 } 218 219 if (mSelectionModifierCursorController != null) { 220 mSelectionModifierCursorController.onDetached(); 221 } 222 223 if (mShowSuggestionRunnable != null) { 224 mTextView.removeCallbacks(mShowSuggestionRunnable); 225 } 226 227 invalidateTextDisplayList(); 228 229 if (mSpellChecker != null) { 230 mSpellChecker.closeSession(); 231 // Forces the creation of a new SpellChecker next time this window is created. 232 // Will handle the cases where the settings has been changed in the meantime. 233 mSpellChecker = null; 234 } 235 236 hideControllers(); 237 } 238 239 private void showError() { 240 if (mTextView.getWindowToken() == null) { 241 mShowErrorAfterAttach = true; 242 return; 243 } 244 245 if (mErrorPopup == null) { 246 LayoutInflater inflater = LayoutInflater.from(mTextView.getContext()); 247 final TextView err = (TextView) inflater.inflate( 248 com.android.internal.R.layout.textview_hint, null); 249 250 final float scale = mTextView.getResources().getDisplayMetrics().density; 251 mErrorPopup = new ErrorPopup(err, (int)(200 * scale + 0.5f), (int)(50 * scale + 0.5f)); 252 mErrorPopup.setFocusable(false); 253 // The user is entering text, so the input method is needed. We 254 // don't want the popup to be displayed on top of it. 255 mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); 256 } 257 258 TextView tv = (TextView) mErrorPopup.getContentView(); 259 chooseSize(mErrorPopup, mError, tv); 260 tv.setText(mError); 261 262 mErrorPopup.showAsDropDown(mTextView, getErrorX(), getErrorY()); 263 mErrorPopup.fixDirection(mErrorPopup.isAboveAnchor()); 264 } 265 266 public void setError(CharSequence error, Drawable icon) { 267 mError = TextUtils.stringOrSpannedString(error); 268 mErrorWasChanged = true; 269 final Drawables dr = mTextView.mDrawables; 270 if (dr != null) { 271 switch (mTextView.getResolvedLayoutDirection()) { 272 default: 273 case View.LAYOUT_DIRECTION_LTR: 274 mTextView.setCompoundDrawables(dr.mDrawableLeft, dr.mDrawableTop, icon, 275 dr.mDrawableBottom); 276 break; 277 case View.LAYOUT_DIRECTION_RTL: 278 mTextView.setCompoundDrawables(icon, dr.mDrawableTop, dr.mDrawableRight, 279 dr.mDrawableBottom); 280 break; 281 } 282 } else { 283 mTextView.setCompoundDrawables(null, null, icon, null); 284 } 285 286 if (mError == null) { 287 if (mErrorPopup != null) { 288 if (mErrorPopup.isShowing()) { 289 mErrorPopup.dismiss(); 290 } 291 292 mErrorPopup = null; 293 } 294 } else { 295 if (mTextView.isFocused()) { 296 showError(); 297 } 298 } 299 } 300 301 private void hideError() { 302 if (mErrorPopup != null) { 303 if (mErrorPopup.isShowing()) { 304 mErrorPopup.dismiss(); 305 } 306 } 307 308 mShowErrorAfterAttach = false; 309 } 310 311 /** 312 * Returns the Y offset to make the pointy top of the error point 313 * at the middle of the error icon. 314 */ 315 private int getErrorX() { 316 /* 317 * The "25" is the distance between the point and the right edge 318 * of the background 319 */ 320 final float scale = mTextView.getResources().getDisplayMetrics().density; 321 322 final Drawables dr = mTextView.mDrawables; 323 return mTextView.getWidth() - mErrorPopup.getWidth() - mTextView.getPaddingRight() - 324 (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f); 325 } 326 327 /** 328 * Returns the Y offset to make the pointy top of the error point 329 * at the bottom of the error icon. 330 */ 331 private int getErrorY() { 332 /* 333 * Compound, not extended, because the icon is not clipped 334 * if the text height is smaller. 335 */ 336 final int compoundPaddingTop = mTextView.getCompoundPaddingTop(); 337 int vspace = mTextView.getBottom() - mTextView.getTop() - 338 mTextView.getCompoundPaddingBottom() - compoundPaddingTop; 339 340 final Drawables dr = mTextView.mDrawables; 341 int icontop = compoundPaddingTop + 342 (vspace - (dr != null ? dr.mDrawableHeightRight : 0)) / 2; 343 344 /* 345 * The "2" is the distance between the point and the top edge 346 * of the background. 347 */ 348 final float scale = mTextView.getResources().getDisplayMetrics().density; 349 return icontop + (dr != null ? dr.mDrawableHeightRight : 0) - mTextView.getHeight() - 350 (int) (2 * scale + 0.5f); 351 } 352 353 void createInputContentTypeIfNeeded() { 354 if (mInputContentType == null) { 355 mInputContentType = new InputContentType(); 356 } 357 } 358 359 void createInputMethodStateIfNeeded() { 360 if (mInputMethodState == null) { 361 mInputMethodState = new InputMethodState(); 362 } 363 } 364 365 boolean isCursorVisible() { 366 // The default value is true, even when there is no associated Editor 367 return mCursorVisible && mTextView.isTextEditable(); 368 } 369 370 void prepareCursorControllers() { 371 boolean windowSupportsHandles = false; 372 373 ViewGroup.LayoutParams params = mTextView.getRootView().getLayoutParams(); 374 if (params instanceof WindowManager.LayoutParams) { 375 WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params; 376 windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW 377 || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW; 378 } 379 380 boolean enabled = windowSupportsHandles && mTextView.getLayout() != null; 381 mInsertionControllerEnabled = enabled && isCursorVisible(); 382 mSelectionControllerEnabled = enabled && mTextView.textCanBeSelected(); 383 384 if (!mInsertionControllerEnabled) { 385 hideInsertionPointCursorController(); 386 if (mInsertionPointCursorController != null) { 387 mInsertionPointCursorController.onDetached(); 388 mInsertionPointCursorController = null; 389 } 390 } 391 392 if (!mSelectionControllerEnabled) { 393 stopSelectionActionMode(); 394 if (mSelectionModifierCursorController != null) { 395 mSelectionModifierCursorController.onDetached(); 396 mSelectionModifierCursorController = null; 397 } 398 } 399 } 400 401 private void hideInsertionPointCursorController() { 402 if (mInsertionPointCursorController != null) { 403 mInsertionPointCursorController.hide(); 404 } 405 } 406 407 /** 408 * Hides the insertion controller and stops text selection mode, hiding the selection controller 409 */ 410 void hideControllers() { 411 hideCursorControllers(); 412 hideSpanControllers(); 413 } 414 415 private void hideSpanControllers() { 416 if (mEasyEditSpanController != null) { 417 mEasyEditSpanController.hide(); 418 } 419 } 420 421 private void hideCursorControllers() { 422 if (mSuggestionsPopupWindow != null && !mSuggestionsPopupWindow.isShowingUp()) { 423 // Should be done before hide insertion point controller since it triggers a show of it 424 mSuggestionsPopupWindow.hide(); 425 } 426 hideInsertionPointCursorController(); 427 stopSelectionActionMode(); 428 } 429 430 /** 431 * Create new SpellCheckSpans on the modified region. 432 */ 433 private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) { 434 if (mTextView.isTextEditable() && mTextView.isSuggestionsEnabled() && 435 !(mTextView instanceof ExtractEditText)) { 436 if (mSpellChecker == null && createSpellChecker) { 437 mSpellChecker = new SpellChecker(mTextView); 438 } 439 if (mSpellChecker != null) { 440 mSpellChecker.spellCheck(start, end); 441 } 442 } 443 } 444 445 void onScreenStateChanged(int screenState) { 446 switch (screenState) { 447 case View.SCREEN_STATE_ON: 448 resumeBlink(); 449 break; 450 case View.SCREEN_STATE_OFF: 451 suspendBlink(); 452 break; 453 } 454 } 455 456 private void suspendBlink() { 457 if (mBlink != null) { 458 mBlink.cancel(); 459 } 460 } 461 462 private void resumeBlink() { 463 if (mBlink != null) { 464 mBlink.uncancel(); 465 makeBlink(); 466 } 467 } 468 469 void adjustInputType(boolean password, boolean passwordInputType, 470 boolean webPasswordInputType, boolean numberPasswordInputType) { 471 // mInputType has been set from inputType, possibly modified by mInputMethod. 472 // Specialize mInputType to [web]password if we have a text class and the original input 473 // type was a password. 474 if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 475 if (password || passwordInputType) { 476 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 477 | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD; 478 } 479 if (webPasswordInputType) { 480 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 481 | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 482 } 483 } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) { 484 if (numberPasswordInputType) { 485 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 486 | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD; 487 } 488 } 489 } 490 491 private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) { 492 int wid = tv.getPaddingLeft() + tv.getPaddingRight(); 493 int ht = tv.getPaddingTop() + tv.getPaddingBottom(); 494 495 int defaultWidthInPixels = mTextView.getResources().getDimensionPixelSize( 496 com.android.internal.R.dimen.textview_error_popup_default_width); 497 Layout l = new StaticLayout(text, tv.getPaint(), defaultWidthInPixels, 498 Layout.Alignment.ALIGN_NORMAL, 1, 0, true); 499 float max = 0; 500 for (int i = 0; i < l.getLineCount(); i++) { 501 max = Math.max(max, l.getLineWidth(i)); 502 } 503 504 /* 505 * Now set the popup size to be big enough for the text plus the border capped 506 * to DEFAULT_MAX_POPUP_WIDTH 507 */ 508 pop.setWidth(wid + (int) Math.ceil(max)); 509 pop.setHeight(ht + l.getHeight()); 510 } 511 512 void setFrame() { 513 if (mErrorPopup != null) { 514 TextView tv = (TextView) mErrorPopup.getContentView(); 515 chooseSize(mErrorPopup, mError, tv); 516 mErrorPopup.update(mTextView, getErrorX(), getErrorY(), 517 mErrorPopup.getWidth(), mErrorPopup.getHeight()); 518 } 519 } 520 521 /** 522 * Unlike {@link TextView#textCanBeSelected()}, this method is based on the <i>current</i> state 523 * of the TextView. textCanBeSelected() has to be true (this is one of the conditions to have 524 * a selection controller (see {@link #prepareCursorControllers()}), but this is not sufficient. 525 */ 526 private boolean canSelectText() { 527 return hasSelectionController() && mTextView.getText().length() != 0; 528 } 529 530 /** 531 * It would be better to rely on the input type for everything. A password inputType should have 532 * a password transformation. We should hence use isPasswordInputType instead of this method. 533 * 534 * We should: 535 * - Call setInputType in setKeyListener instead of changing the input type directly (which 536 * would install the correct transformation). 537 * - Refuse the installation of a non-password transformation in setTransformation if the input 538 * type is password. 539 * 540 * However, this is like this for legacy reasons and we cannot break existing apps. This method 541 * is useful since it matches what the user can see (obfuscated text or not). 542 * 543 * @return true if the current transformation method is of the password type. 544 */ 545 private boolean hasPasswordTransformationMethod() { 546 return mTextView.getTransformationMethod() instanceof PasswordTransformationMethod; 547 } 548 549 /** 550 * Adjusts selection to the word under last touch offset. 551 * Return true if the operation was successfully performed. 552 */ 553 private boolean selectCurrentWord() { 554 if (!canSelectText()) { 555 return false; 556 } 557 558 if (hasPasswordTransformationMethod()) { 559 // Always select all on a password field. 560 // Cut/copy menu entries are not available for passwords, but being able to select all 561 // is however useful to delete or paste to replace the entire content. 562 return mTextView.selectAllText(); 563 } 564 565 int inputType = mTextView.getInputType(); 566 int klass = inputType & InputType.TYPE_MASK_CLASS; 567 int variation = inputType & InputType.TYPE_MASK_VARIATION; 568 569 // Specific text field types: select the entire text for these 570 if (klass == InputType.TYPE_CLASS_NUMBER || 571 klass == InputType.TYPE_CLASS_PHONE || 572 klass == InputType.TYPE_CLASS_DATETIME || 573 variation == InputType.TYPE_TEXT_VARIATION_URI || 574 variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS || 575 variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS || 576 variation == InputType.TYPE_TEXT_VARIATION_FILTER) { 577 return mTextView.selectAllText(); 578 } 579 580 long lastTouchOffsets = getLastTouchOffsets(); 581 final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 582 final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 583 584 // Safety check in case standard touch event handling has been bypassed 585 if (minOffset < 0 || minOffset >= mTextView.getText().length()) return false; 586 if (maxOffset < 0 || maxOffset >= mTextView.getText().length()) return false; 587 588 int selectionStart, selectionEnd; 589 590 // If a URLSpan (web address, email, phone...) is found at that position, select it. 591 URLSpan[] urlSpans = ((Spanned) mTextView.getText()). 592 getSpans(minOffset, maxOffset, URLSpan.class); 593 if (urlSpans.length >= 1) { 594 URLSpan urlSpan = urlSpans[0]; 595 selectionStart = ((Spanned) mTextView.getText()).getSpanStart(urlSpan); 596 selectionEnd = ((Spanned) mTextView.getText()).getSpanEnd(urlSpan); 597 } else { 598 final WordIterator wordIterator = getWordIterator(); 599 wordIterator.setCharSequence(mTextView.getText(), minOffset, maxOffset); 600 601 selectionStart = wordIterator.getBeginning(minOffset); 602 selectionEnd = wordIterator.getEnd(maxOffset); 603 604 if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE || 605 selectionStart == selectionEnd) { 606 // Possible when the word iterator does not properly handle the text's language 607 long range = getCharRange(minOffset); 608 selectionStart = TextUtils.unpackRangeStartFromLong(range); 609 selectionEnd = TextUtils.unpackRangeEndFromLong(range); 610 } 611 } 612 613 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 614 return selectionEnd > selectionStart; 615 } 616 617 void onLocaleChanged() { 618 // Will be re-created on demand in getWordIterator with the proper new locale 619 mWordIterator = null; 620 } 621 622 /** 623 * @hide 624 */ 625 public WordIterator getWordIterator() { 626 if (mWordIterator == null) { 627 mWordIterator = new WordIterator(mTextView.getTextServicesLocale()); 628 } 629 return mWordIterator; 630 } 631 632 private long getCharRange(int offset) { 633 final int textLength = mTextView.getText().length(); 634 if (offset + 1 < textLength) { 635 final char currentChar = mTextView.getText().charAt(offset); 636 final char nextChar = mTextView.getText().charAt(offset + 1); 637 if (Character.isSurrogatePair(currentChar, nextChar)) { 638 return TextUtils.packRangeInLong(offset, offset + 2); 639 } 640 } 641 if (offset < textLength) { 642 return TextUtils.packRangeInLong(offset, offset + 1); 643 } 644 if (offset - 2 >= 0) { 645 final char previousChar = mTextView.getText().charAt(offset - 1); 646 final char previousPreviousChar = mTextView.getText().charAt(offset - 2); 647 if (Character.isSurrogatePair(previousPreviousChar, previousChar)) { 648 return TextUtils.packRangeInLong(offset - 2, offset); 649 } 650 } 651 if (offset - 1 >= 0) { 652 return TextUtils.packRangeInLong(offset - 1, offset); 653 } 654 return TextUtils.packRangeInLong(offset, offset); 655 } 656 657 private boolean touchPositionIsInSelection() { 658 int selectionStart = mTextView.getSelectionStart(); 659 int selectionEnd = mTextView.getSelectionEnd(); 660 661 if (selectionStart == selectionEnd) { 662 return false; 663 } 664 665 if (selectionStart > selectionEnd) { 666 int tmp = selectionStart; 667 selectionStart = selectionEnd; 668 selectionEnd = tmp; 669 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 670 } 671 672 SelectionModifierCursorController selectionController = getSelectionController(); 673 int minOffset = selectionController.getMinTouchOffset(); 674 int maxOffset = selectionController.getMaxTouchOffset(); 675 676 return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); 677 } 678 679 private PositionListener getPositionListener() { 680 if (mPositionListener == null) { 681 mPositionListener = new PositionListener(); 682 } 683 return mPositionListener; 684 } 685 686 private interface TextViewPositionListener { 687 public void updatePosition(int parentPositionX, int parentPositionY, 688 boolean parentPositionChanged, boolean parentScrolled); 689 } 690 691 private boolean isPositionVisible(int positionX, int positionY) { 692 synchronized (TEMP_POSITION) { 693 final float[] position = TEMP_POSITION; 694 position[0] = positionX; 695 position[1] = positionY; 696 View view = mTextView; 697 698 while (view != null) { 699 if (view != mTextView) { 700 // Local scroll is already taken into account in positionX/Y 701 position[0] -= view.getScrollX(); 702 position[1] -= view.getScrollY(); 703 } 704 705 if (position[0] < 0 || position[1] < 0 || 706 position[0] > view.getWidth() || position[1] > view.getHeight()) { 707 return false; 708 } 709 710 if (!view.getMatrix().isIdentity()) { 711 view.getMatrix().mapPoints(position); 712 } 713 714 position[0] += view.getLeft(); 715 position[1] += view.getTop(); 716 717 final ViewParent parent = view.getParent(); 718 if (parent instanceof View) { 719 view = (View) parent; 720 } else { 721 // We've reached the ViewRoot, stop iterating 722 view = null; 723 } 724 } 725 } 726 727 // We've been able to walk up the view hierarchy and the position was never clipped 728 return true; 729 } 730 731 private boolean isOffsetVisible(int offset) { 732 Layout layout = mTextView.getLayout(); 733 final int line = layout.getLineForOffset(offset); 734 final int lineBottom = layout.getLineBottom(line); 735 final int primaryHorizontal = (int) layout.getPrimaryHorizontal(offset); 736 return isPositionVisible(primaryHorizontal + mTextView.viewportToContentHorizontalOffset(), 737 lineBottom + mTextView.viewportToContentVerticalOffset()); 738 } 739 740 /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed 741 * in the view. Returns false when the position is in the empty space of left/right of text. 742 */ 743 private boolean isPositionOnText(float x, float y) { 744 Layout layout = mTextView.getLayout(); 745 if (layout == null) return false; 746 747 final int line = mTextView.getLineAtCoordinate(y); 748 x = mTextView.convertToLocalHorizontalCoordinate(x); 749 750 if (x < layout.getLineLeft(line)) return false; 751 if (x > layout.getLineRight(line)) return false; 752 return true; 753 } 754 755 public boolean performLongClick(boolean handled) { 756 // Long press in empty space moves cursor and shows the Paste affordance if available. 757 if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) && 758 mInsertionControllerEnabled) { 759 final int offset = mTextView.getOffsetForPosition(mLastDownPositionX, 760 mLastDownPositionY); 761 stopSelectionActionMode(); 762 Selection.setSelection((Spannable) mTextView.getText(), offset); 763 getInsertionController().showWithActionPopup(); 764 handled = true; 765 } 766 767 if (!handled && mSelectionActionMode != null) { 768 if (touchPositionIsInSelection()) { 769 // Start a drag 770 final int start = mTextView.getSelectionStart(); 771 final int end = mTextView.getSelectionEnd(); 772 CharSequence selectedText = mTextView.getTransformedText(start, end); 773 ClipData data = ClipData.newPlainText(null, selectedText); 774 DragLocalState localState = new DragLocalState(mTextView, start, end); 775 mTextView.startDrag(data, getTextThumbnailBuilder(selectedText), localState, 0); 776 stopSelectionActionMode(); 777 } else { 778 getSelectionController().hide(); 779 selectCurrentWord(); 780 getSelectionController().show(); 781 } 782 handled = true; 783 } 784 785 // Start a new selection 786 if (!handled) { 787 handled = startSelectionActionMode(); 788 } 789 790 return handled; 791 } 792 793 private long getLastTouchOffsets() { 794 SelectionModifierCursorController selectionController = getSelectionController(); 795 final int minOffset = selectionController.getMinTouchOffset(); 796 final int maxOffset = selectionController.getMaxTouchOffset(); 797 return TextUtils.packRangeInLong(minOffset, maxOffset); 798 } 799 800 void onFocusChanged(boolean focused, int direction) { 801 mShowCursor = SystemClock.uptimeMillis(); 802 ensureEndedBatchEdit(); 803 804 if (focused) { 805 int selStart = mTextView.getSelectionStart(); 806 int selEnd = mTextView.getSelectionEnd(); 807 808 // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection 809 // mode for these, unless there was a specific selection already started. 810 final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 && 811 selEnd == mTextView.getText().length(); 812 813 mCreatedWithASelection = mFrozenWithFocus && mTextView.hasSelection() && 814 !isFocusHighlighted; 815 816 if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { 817 // If a tap was used to give focus to that view, move cursor at tap position. 818 // Has to be done before onTakeFocus, which can be overloaded. 819 final int lastTapPosition = getLastTapPosition(); 820 if (lastTapPosition >= 0) { 821 Selection.setSelection((Spannable) mTextView.getText(), lastTapPosition); 822 } 823 824 // Note this may have to be moved out of the Editor class 825 MovementMethod mMovement = mTextView.getMovementMethod(); 826 if (mMovement != null) { 827 mMovement.onTakeFocus(mTextView, (Spannable) mTextView.getText(), direction); 828 } 829 830 // The DecorView does not have focus when the 'Done' ExtractEditText button is 831 // pressed. Since it is the ViewAncestor's mView, it requests focus before 832 // ExtractEditText clears focus, which gives focus to the ExtractEditText. 833 // This special case ensure that we keep current selection in that case. 834 // It would be better to know why the DecorView does not have focus at that time. 835 if (((mTextView instanceof ExtractEditText) || mSelectionMoved) && 836 selStart >= 0 && selEnd >= 0) { 837 /* 838 * Someone intentionally set the selection, so let them 839 * do whatever it is that they wanted to do instead of 840 * the default on-focus behavior. We reset the selection 841 * here instead of just skipping the onTakeFocus() call 842 * because some movement methods do something other than 843 * just setting the selection in theirs and we still 844 * need to go through that path. 845 */ 846 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 847 } 848 849 if (mSelectAllOnFocus) { 850 mTextView.selectAllText(); 851 } 852 853 mTouchFocusSelected = true; 854 } 855 856 mFrozenWithFocus = false; 857 mSelectionMoved = false; 858 859 if (mError != null) { 860 showError(); 861 } 862 863 makeBlink(); 864 } else { 865 if (mError != null) { 866 hideError(); 867 } 868 // Don't leave us in the middle of a batch edit. 869 mTextView.onEndBatchEdit(); 870 871 if (mTextView instanceof ExtractEditText) { 872 // terminateTextSelectionMode removes selection, which we want to keep when 873 // ExtractEditText goes out of focus. 874 final int selStart = mTextView.getSelectionStart(); 875 final int selEnd = mTextView.getSelectionEnd(); 876 hideControllers(); 877 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 878 } else { 879 hideControllers(); 880 downgradeEasyCorrectionSpans(); 881 } 882 883 // No need to create the controller 884 if (mSelectionModifierCursorController != null) { 885 mSelectionModifierCursorController.resetTouchOffsets(); 886 } 887 } 888 } 889 890 /** 891 * Downgrades to simple suggestions all the easy correction spans that are not a spell check 892 * span. 893 */ 894 private void downgradeEasyCorrectionSpans() { 895 CharSequence text = mTextView.getText(); 896 if (text instanceof Spannable) { 897 Spannable spannable = (Spannable) text; 898 SuggestionSpan[] suggestionSpans = spannable.getSpans(0, 899 spannable.length(), SuggestionSpan.class); 900 for (int i = 0; i < suggestionSpans.length; i++) { 901 int flags = suggestionSpans[i].getFlags(); 902 if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0 903 && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) { 904 flags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 905 suggestionSpans[i].setFlags(flags); 906 } 907 } 908 } 909 } 910 911 void sendOnTextChanged(int start, int after) { 912 updateSpellCheckSpans(start, start + after, false); 913 914 // Hide the controllers as soon as text is modified (typing, procedural...) 915 // We do not hide the span controllers, since they can be added when a new text is 916 // inserted into the text view (voice IME). 917 hideCursorControllers(); 918 } 919 920 private int getLastTapPosition() { 921 // No need to create the controller at that point, no last tap position saved 922 if (mSelectionModifierCursorController != null) { 923 int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); 924 if (lastTapPosition >= 0) { 925 // Safety check, should not be possible. 926 if (lastTapPosition > mTextView.getText().length()) { 927 lastTapPosition = mTextView.getText().length(); 928 } 929 return lastTapPosition; 930 } 931 } 932 933 return -1; 934 } 935 936 void onWindowFocusChanged(boolean hasWindowFocus) { 937 if (hasWindowFocus) { 938 if (mBlink != null) { 939 mBlink.uncancel(); 940 makeBlink(); 941 } 942 } else { 943 if (mBlink != null) { 944 mBlink.cancel(); 945 } 946 if (mInputContentType != null) { 947 mInputContentType.enterDown = false; 948 } 949 // Order matters! Must be done before onParentLostFocus to rely on isShowingUp 950 hideControllers(); 951 if (mSuggestionsPopupWindow != null) { 952 mSuggestionsPopupWindow.onParentLostFocus(); 953 } 954 955 // Don't leave us in the middle of a batch edit. 956 mTextView.onEndBatchEdit(); 957 } 958 } 959 960 void onTouchEvent(MotionEvent event) { 961 if (hasSelectionController()) { 962 getSelectionController().onTouchEvent(event); 963 } 964 965 if (mShowSuggestionRunnable != null) { 966 mTextView.removeCallbacks(mShowSuggestionRunnable); 967 mShowSuggestionRunnable = null; 968 } 969 970 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 971 mLastDownPositionX = event.getX(); 972 mLastDownPositionY = event.getY(); 973 974 // Reset this state; it will be re-set if super.onTouchEvent 975 // causes focus to move to the view. 976 mTouchFocusSelected = false; 977 mIgnoreActionUpEvent = false; 978 } 979 } 980 981 public void beginBatchEdit() { 982 mInBatchEditControllers = true; 983 final InputMethodState ims = mInputMethodState; 984 if (ims != null) { 985 int nesting = ++ims.mBatchEditNesting; 986 if (nesting == 1) { 987 ims.mCursorChanged = false; 988 ims.mChangedDelta = 0; 989 if (ims.mContentChanged) { 990 // We already have a pending change from somewhere else, 991 // so turn this into a full update. 992 ims.mChangedStart = 0; 993 ims.mChangedEnd = mTextView.getText().length(); 994 } else { 995 ims.mChangedStart = EXTRACT_UNKNOWN; 996 ims.mChangedEnd = EXTRACT_UNKNOWN; 997 ims.mContentChanged = false; 998 } 999 mTextView.onBeginBatchEdit(); 1000 } 1001 } 1002 } 1003 1004 public void endBatchEdit() { 1005 mInBatchEditControllers = false; 1006 final InputMethodState ims = mInputMethodState; 1007 if (ims != null) { 1008 int nesting = --ims.mBatchEditNesting; 1009 if (nesting == 0) { 1010 finishBatchEdit(ims); 1011 } 1012 } 1013 } 1014 1015 void ensureEndedBatchEdit() { 1016 final InputMethodState ims = mInputMethodState; 1017 if (ims != null && ims.mBatchEditNesting != 0) { 1018 ims.mBatchEditNesting = 0; 1019 finishBatchEdit(ims); 1020 } 1021 } 1022 1023 void finishBatchEdit(final InputMethodState ims) { 1024 mTextView.onEndBatchEdit(); 1025 1026 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1027 mTextView.updateAfterEdit(); 1028 reportExtractedText(); 1029 } else if (ims.mCursorChanged) { 1030 // Cheezy way to get us to report the current cursor location. 1031 mTextView.invalidateCursor(); 1032 } 1033 } 1034 1035 static final int EXTRACT_NOTHING = -2; 1036 static final int EXTRACT_UNKNOWN = -1; 1037 1038 boolean extractText(ExtractedTextRequest request, ExtractedText outText) { 1039 return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, 1040 EXTRACT_UNKNOWN, outText); 1041 } 1042 1043 private boolean extractTextInternal(ExtractedTextRequest request, 1044 int partialStartOffset, int partialEndOffset, int delta, 1045 ExtractedText outText) { 1046 final CharSequence content = mTextView.getText(); 1047 if (content != null) { 1048 if (partialStartOffset != EXTRACT_NOTHING) { 1049 final int N = content.length(); 1050 if (partialStartOffset < 0) { 1051 outText.partialStartOffset = outText.partialEndOffset = -1; 1052 partialStartOffset = 0; 1053 partialEndOffset = N; 1054 } else { 1055 // Now use the delta to determine the actual amount of text 1056 // we need. 1057 partialEndOffset += delta; 1058 // Adjust offsets to ensure we contain full spans. 1059 if (content instanceof Spanned) { 1060 Spanned spanned = (Spanned)content; 1061 Object[] spans = spanned.getSpans(partialStartOffset, 1062 partialEndOffset, ParcelableSpan.class); 1063 int i = spans.length; 1064 while (i > 0) { 1065 i--; 1066 int j = spanned.getSpanStart(spans[i]); 1067 if (j < partialStartOffset) partialStartOffset = j; 1068 j = spanned.getSpanEnd(spans[i]); 1069 if (j > partialEndOffset) partialEndOffset = j; 1070 } 1071 } 1072 outText.partialStartOffset = partialStartOffset; 1073 outText.partialEndOffset = partialEndOffset - delta; 1074 1075 if (partialStartOffset > N) { 1076 partialStartOffset = N; 1077 } else if (partialStartOffset < 0) { 1078 partialStartOffset = 0; 1079 } 1080 if (partialEndOffset > N) { 1081 partialEndOffset = N; 1082 } else if (partialEndOffset < 0) { 1083 partialEndOffset = 0; 1084 } 1085 } 1086 if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) { 1087 outText.text = content.subSequence(partialStartOffset, 1088 partialEndOffset); 1089 } else { 1090 outText.text = TextUtils.substring(content, partialStartOffset, 1091 partialEndOffset); 1092 } 1093 } else { 1094 outText.partialStartOffset = 0; 1095 outText.partialEndOffset = 0; 1096 outText.text = ""; 1097 } 1098 outText.flags = 0; 1099 if (MetaKeyKeyListener.getMetaState(content, MetaKeyKeyListener.META_SELECTING) != 0) { 1100 outText.flags |= ExtractedText.FLAG_SELECTING; 1101 } 1102 if (mTextView.isSingleLine()) { 1103 outText.flags |= ExtractedText.FLAG_SINGLE_LINE; 1104 } 1105 outText.startOffset = 0; 1106 outText.selectionStart = mTextView.getSelectionStart(); 1107 outText.selectionEnd = mTextView.getSelectionEnd(); 1108 return true; 1109 } 1110 return false; 1111 } 1112 1113 boolean reportExtractedText() { 1114 final Editor.InputMethodState ims = mInputMethodState; 1115 if (ims != null) { 1116 final boolean contentChanged = ims.mContentChanged; 1117 if (contentChanged || ims.mSelectionModeChanged) { 1118 ims.mContentChanged = false; 1119 ims.mSelectionModeChanged = false; 1120 final ExtractedTextRequest req = ims.mExtractedTextRequest; 1121 if (req != null) { 1122 InputMethodManager imm = InputMethodManager.peekInstance(); 1123 if (imm != null) { 1124 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1125 "Retrieving extracted start=" + ims.mChangedStart + 1126 " end=" + ims.mChangedEnd + 1127 " delta=" + ims.mChangedDelta); 1128 if (ims.mChangedStart < 0 && !contentChanged) { 1129 ims.mChangedStart = EXTRACT_NOTHING; 1130 } 1131 if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, 1132 ims.mChangedDelta, ims.mExtractedText)) { 1133 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1134 "Reporting extracted start=" + 1135 ims.mExtractedText.partialStartOffset + 1136 " end=" + ims.mExtractedText.partialEndOffset + 1137 ": " + ims.mExtractedText.text); 1138 1139 imm.updateExtractedText(mTextView, req.token, ims.mExtractedText); 1140 ims.mChangedStart = EXTRACT_UNKNOWN; 1141 ims.mChangedEnd = EXTRACT_UNKNOWN; 1142 ims.mChangedDelta = 0; 1143 ims.mContentChanged = false; 1144 return true; 1145 } 1146 } 1147 } 1148 } 1149 } 1150 return false; 1151 } 1152 1153 void onDraw(Canvas canvas, Layout layout, Path highlight, Paint highlightPaint, 1154 int cursorOffsetVertical) { 1155 final int selectionStart = mTextView.getSelectionStart(); 1156 final int selectionEnd = mTextView.getSelectionEnd(); 1157 1158 final InputMethodState ims = mInputMethodState; 1159 if (ims != null && ims.mBatchEditNesting == 0) { 1160 InputMethodManager imm = InputMethodManager.peekInstance(); 1161 if (imm != null) { 1162 if (imm.isActive(mTextView)) { 1163 boolean reported = false; 1164 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1165 // We are in extract mode and the content has changed 1166 // in some way... just report complete new text to the 1167 // input method. 1168 reported = reportExtractedText(); 1169 } 1170 if (!reported && highlight != null) { 1171 int candStart = -1; 1172 int candEnd = -1; 1173 if (mTextView.getText() instanceof Spannable) { 1174 Spannable sp = (Spannable) mTextView.getText(); 1175 candStart = EditableInputConnection.getComposingSpanStart(sp); 1176 candEnd = EditableInputConnection.getComposingSpanEnd(sp); 1177 } 1178 imm.updateSelection(mTextView, 1179 selectionStart, selectionEnd, candStart, candEnd); 1180 } 1181 } 1182 1183 if (imm.isWatchingCursor(mTextView) && highlight != null) { 1184 highlight.computeBounds(ims.mTmpRectF, true); 1185 ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0; 1186 1187 canvas.getMatrix().mapPoints(ims.mTmpOffset); 1188 ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]); 1189 1190 ims.mTmpRectF.offset(0, cursorOffsetVertical); 1191 1192 ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5), 1193 (int)(ims.mTmpRectF.top + 0.5), 1194 (int)(ims.mTmpRectF.right + 0.5), 1195 (int)(ims.mTmpRectF.bottom + 0.5)); 1196 1197 imm.updateCursor(mTextView, 1198 ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top, 1199 ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom); 1200 } 1201 } 1202 } 1203 1204 if (mCorrectionHighlighter != null) { 1205 mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); 1206 } 1207 1208 if (highlight != null && selectionStart == selectionEnd && mCursorCount > 0) { 1209 drawCursor(canvas, cursorOffsetVertical); 1210 // Rely on the drawable entirely, do not draw the cursor line. 1211 // Has to be done after the IMM related code above which relies on the highlight. 1212 highlight = null; 1213 } 1214 1215 if (mTextView.canHaveDisplayList() && canvas.isHardwareAccelerated()) { 1216 drawHardwareAccelerated(canvas, layout, highlight, highlightPaint, 1217 cursorOffsetVertical); 1218 } else { 1219 layout.draw(canvas, highlight, highlightPaint, cursorOffsetVertical); 1220 } 1221 } 1222 1223 private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight, 1224 Paint highlightPaint, int cursorOffsetVertical) { 1225 final int width = mTextView.getWidth(); 1226 final int height = mTextView.getHeight(); 1227 1228 final long lineRange = layout.getLineRangeForDraw(canvas); 1229 int firstLine = TextUtils.unpackRangeStartFromLong(lineRange); 1230 int lastLine = TextUtils.unpackRangeEndFromLong(lineRange); 1231 if (lastLine < 0) return; 1232 1233 layout.drawBackground(canvas, highlight, highlightPaint, cursorOffsetVertical, 1234 firstLine, lastLine); 1235 1236 if (layout instanceof DynamicLayout) { 1237 if (mTextDisplayLists == null) { 1238 mTextDisplayLists = new DisplayList[ArrayUtils.idealObjectArraySize(0)]; 1239 } 1240 1241 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1242 int[] blockEnds = dynamicLayout.getBlockEnds(); 1243 int[] blockIndices = dynamicLayout.getBlockIndices(); 1244 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1245 1246 final int mScrollX = mTextView.getScrollX(); 1247 final int mScrollY = mTextView.getScrollY(); 1248 canvas.translate(mScrollX, mScrollY); 1249 int endOfPreviousBlock = -1; 1250 int searchStartIndex = 0; 1251 for (int i = 0; i < numberOfBlocks; i++) { 1252 int blockEnd = blockEnds[i]; 1253 int blockIndex = blockIndices[i]; 1254 1255 final boolean blockIsInvalid = blockIndex == DynamicLayout.INVALID_BLOCK_INDEX; 1256 if (blockIsInvalid) { 1257 blockIndex = getAvailableDisplayListIndex(blockIndices, numberOfBlocks, 1258 searchStartIndex); 1259 // Dynamic layout internal block indices structure is updated from Editor 1260 blockIndices[i] = blockIndex; 1261 searchStartIndex = blockIndex + 1; 1262 } 1263 1264 DisplayList blockDisplayList = mTextDisplayLists[blockIndex]; 1265 if (blockDisplayList == null) { 1266 blockDisplayList = mTextDisplayLists[blockIndex] = 1267 mTextView.getHardwareRenderer().createDisplayList("Text " + blockIndex); 1268 } else { 1269 if (blockIsInvalid) blockDisplayList.invalidate(); 1270 } 1271 1272 if (!blockDisplayList.isValid()) { 1273 final HardwareCanvas hardwareCanvas = blockDisplayList.start(); 1274 try { 1275 hardwareCanvas.setViewport(width, height); 1276 // The dirty rect should always be null for a display list 1277 hardwareCanvas.onPreDraw(null); 1278 hardwareCanvas.translate(-mScrollX, -mScrollY); 1279 layout.drawText(hardwareCanvas, endOfPreviousBlock + 1, blockEnd); 1280 hardwareCanvas.translate(mScrollX, mScrollY); 1281 } finally { 1282 hardwareCanvas.onPostDraw(); 1283 blockDisplayList.end(); 1284 if (View.USE_DISPLAY_LIST_PROPERTIES) { 1285 blockDisplayList.setLeftTopRightBottom(0, 0, width, height); 1286 } 1287 } 1288 } 1289 1290 ((HardwareCanvas) canvas).drawDisplayList(blockDisplayList, width, height, null, 1291 DisplayList.FLAG_CLIP_CHILDREN); 1292 endOfPreviousBlock = blockEnd; 1293 } 1294 canvas.translate(-mScrollX, -mScrollY); 1295 } else { 1296 // Boring layout is used for empty and hint text 1297 layout.drawText(canvas, firstLine, lastLine); 1298 } 1299 } 1300 1301 private int getAvailableDisplayListIndex(int[] blockIndices, int numberOfBlocks, 1302 int searchStartIndex) { 1303 int length = mTextDisplayLists.length; 1304 for (int i = searchStartIndex; i < length; i++) { 1305 boolean blockIndexFound = false; 1306 for (int j = 0; j < numberOfBlocks; j++) { 1307 if (blockIndices[j] == i) { 1308 blockIndexFound = true; 1309 break; 1310 } 1311 } 1312 if (blockIndexFound) continue; 1313 return i; 1314 } 1315 1316 // No available index found, the pool has to grow 1317 int newSize = ArrayUtils.idealIntArraySize(length + 1); 1318 DisplayList[] displayLists = new DisplayList[newSize]; 1319 System.arraycopy(mTextDisplayLists, 0, displayLists, 0, length); 1320 mTextDisplayLists = displayLists; 1321 return length; 1322 } 1323 1324 private void drawCursor(Canvas canvas, int cursorOffsetVertical) { 1325 final boolean translate = cursorOffsetVertical != 0; 1326 if (translate) canvas.translate(0, cursorOffsetVertical); 1327 for (int i = 0; i < mCursorCount; i++) { 1328 mCursorDrawable[i].draw(canvas); 1329 } 1330 if (translate) canvas.translate(0, -cursorOffsetVertical); 1331 } 1332 1333 void invalidateTextDisplayList() { 1334 if (mTextDisplayLists != null) { 1335 for (int i = 0; i < mTextDisplayLists.length; i++) { 1336 if (mTextDisplayLists[i] != null) mTextDisplayLists[i].invalidate(); 1337 } 1338 } 1339 } 1340 1341 void updateCursorsPositions() { 1342 if (mTextView.mCursorDrawableRes == 0) { 1343 mCursorCount = 0; 1344 return; 1345 } 1346 1347 Layout layout = mTextView.getLayout(); 1348 final int offset = mTextView.getSelectionStart(); 1349 final int line = layout.getLineForOffset(offset); 1350 final int top = layout.getLineTop(line); 1351 final int bottom = layout.getLineTop(line + 1); 1352 1353 mCursorCount = layout.isLevelBoundary(offset) ? 2 : 1; 1354 1355 int middle = bottom; 1356 if (mCursorCount == 2) { 1357 // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)} 1358 middle = (top + bottom) >> 1; 1359 } 1360 1361 updateCursorPosition(0, top, middle, layout.getPrimaryHorizontal(offset)); 1362 1363 if (mCursorCount == 2) { 1364 updateCursorPosition(1, middle, bottom, layout.getSecondaryHorizontal(offset)); 1365 } 1366 } 1367 1368 /** 1369 * @return true if the selection mode was actually started. 1370 */ 1371 boolean startSelectionActionMode() { 1372 if (mSelectionActionMode != null) { 1373 // Selection action mode is already started 1374 return false; 1375 } 1376 1377 if (!canSelectText() || !mTextView.requestFocus()) { 1378 Log.w(TextView.LOG_TAG, 1379 "TextView does not support text selection. Action mode cancelled."); 1380 return false; 1381 } 1382 1383 if (!mTextView.hasSelection()) { 1384 // There may already be a selection on device rotation 1385 if (!selectCurrentWord()) { 1386 // No word found under cursor or text selection not permitted. 1387 return false; 1388 } 1389 } 1390 1391 boolean willExtract = extractedTextModeWillBeStarted(); 1392 1393 // Do not start the action mode when extracted text will show up full screen, which would 1394 // immediately hide the newly created action bar and would be visually distracting. 1395 if (!willExtract) { 1396 ActionMode.Callback actionModeCallback = new SelectionActionModeCallback(); 1397 mSelectionActionMode = mTextView.startActionMode(actionModeCallback); 1398 } 1399 1400 final boolean selectionStarted = mSelectionActionMode != null || willExtract; 1401 if (selectionStarted && !mTextView.isTextSelectable()) { 1402 // Show the IME to be able to replace text, except when selecting non editable text. 1403 final InputMethodManager imm = InputMethodManager.peekInstance(); 1404 if (imm != null) { 1405 imm.showSoftInput(mTextView, 0, null); 1406 } 1407 } 1408 1409 return selectionStarted; 1410 } 1411 1412 private boolean extractedTextModeWillBeStarted() { 1413 if (!(mTextView instanceof ExtractEditText)) { 1414 final InputMethodManager imm = InputMethodManager.peekInstance(); 1415 return imm != null && imm.isFullscreenMode(); 1416 } 1417 return false; 1418 } 1419 1420 /** 1421 * @return <code>true</code> if the cursor/current selection overlaps a {@link SuggestionSpan}. 1422 */ 1423 private boolean isCursorInsideSuggestionSpan() { 1424 CharSequence text = mTextView.getText(); 1425 if (!(text instanceof Spannable)) return false; 1426 1427 SuggestionSpan[] suggestionSpans = ((Spannable) text).getSpans( 1428 mTextView.getSelectionStart(), mTextView.getSelectionEnd(), SuggestionSpan.class); 1429 return (suggestionSpans.length > 0); 1430 } 1431 1432 /** 1433 * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with 1434 * {@link SuggestionSpan#FLAG_EASY_CORRECT} set. 1435 */ 1436 private boolean isCursorInsideEasyCorrectionSpan() { 1437 Spannable spannable = (Spannable) mTextView.getText(); 1438 SuggestionSpan[] suggestionSpans = spannable.getSpans(mTextView.getSelectionStart(), 1439 mTextView.getSelectionEnd(), SuggestionSpan.class); 1440 for (int i = 0; i < suggestionSpans.length; i++) { 1441 if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) { 1442 return true; 1443 } 1444 } 1445 return false; 1446 } 1447 1448 void onTouchUpEvent(MotionEvent event) { 1449 boolean selectAllGotFocus = mSelectAllOnFocus && mTextView.didTouchFocusSelect(); 1450 hideControllers(); 1451 CharSequence text = mTextView.getText(); 1452 if (!selectAllGotFocus && text.length() > 0) { 1453 // Move cursor 1454 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 1455 Selection.setSelection((Spannable) text, offset); 1456 if (mSpellChecker != null) { 1457 // When the cursor moves, the word that was typed may need spell check 1458 mSpellChecker.onSelectionChanged(); 1459 } 1460 if (!extractedTextModeWillBeStarted()) { 1461 if (isCursorInsideEasyCorrectionSpan()) { 1462 mShowSuggestionRunnable = new Runnable() { 1463 public void run() { 1464 showSuggestions(); 1465 } 1466 }; 1467 // removeCallbacks is performed on every touch 1468 mTextView.postDelayed(mShowSuggestionRunnable, 1469 ViewConfiguration.getDoubleTapTimeout()); 1470 } else if (hasInsertionController()) { 1471 getInsertionController().show(); 1472 } 1473 } 1474 } 1475 } 1476 1477 protected void stopSelectionActionMode() { 1478 if (mSelectionActionMode != null) { 1479 // This will hide the mSelectionModifierCursorController 1480 mSelectionActionMode.finish(); 1481 } 1482 } 1483 1484 /** 1485 * @return True if this view supports insertion handles. 1486 */ 1487 boolean hasInsertionController() { 1488 return mInsertionControllerEnabled; 1489 } 1490 1491 /** 1492 * @return True if this view supports selection handles. 1493 */ 1494 boolean hasSelectionController() { 1495 return mSelectionControllerEnabled; 1496 } 1497 1498 InsertionPointCursorController getInsertionController() { 1499 if (!mInsertionControllerEnabled) { 1500 return null; 1501 } 1502 1503 if (mInsertionPointCursorController == null) { 1504 mInsertionPointCursorController = new InsertionPointCursorController(); 1505 1506 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 1507 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 1508 } 1509 1510 return mInsertionPointCursorController; 1511 } 1512 1513 SelectionModifierCursorController getSelectionController() { 1514 if (!mSelectionControllerEnabled) { 1515 return null; 1516 } 1517 1518 if (mSelectionModifierCursorController == null) { 1519 mSelectionModifierCursorController = new SelectionModifierCursorController(); 1520 1521 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 1522 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 1523 } 1524 1525 return mSelectionModifierCursorController; 1526 } 1527 1528 private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) { 1529 if (mCursorDrawable[cursorIndex] == null) 1530 mCursorDrawable[cursorIndex] = mTextView.getResources().getDrawable( 1531 mTextView.mCursorDrawableRes); 1532 1533 if (mTempRect == null) mTempRect = new Rect(); 1534 mCursorDrawable[cursorIndex].getPadding(mTempRect); 1535 final int width = mCursorDrawable[cursorIndex].getIntrinsicWidth(); 1536 horizontal = Math.max(0.5f, horizontal - 0.5f); 1537 final int left = (int) (horizontal) - mTempRect.left; 1538 mCursorDrawable[cursorIndex].setBounds(left, top - mTempRect.top, left + width, 1539 bottom + mTempRect.bottom); 1540 } 1541 1542 /** 1543 * Called by the framework in response to a text auto-correction (such as fixing a typo using a 1544 * a dictionnary) from the current input method, provided by it calling 1545 * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default 1546 * implementation flashes the background of the corrected word to provide feedback to the user. 1547 * 1548 * @param info The auto correct info about the text that was corrected. 1549 */ 1550 public void onCommitCorrection(CorrectionInfo info) { 1551 if (mCorrectionHighlighter == null) { 1552 mCorrectionHighlighter = new CorrectionHighlighter(); 1553 } else { 1554 mCorrectionHighlighter.invalidate(false); 1555 } 1556 1557 mCorrectionHighlighter.highlight(info); 1558 } 1559 1560 void showSuggestions() { 1561 if (mSuggestionsPopupWindow == null) { 1562 mSuggestionsPopupWindow = new SuggestionsPopupWindow(); 1563 } 1564 hideControllers(); 1565 mSuggestionsPopupWindow.show(); 1566 } 1567 1568 boolean areSuggestionsShown() { 1569 return mSuggestionsPopupWindow != null && mSuggestionsPopupWindow.isShowing(); 1570 } 1571 1572 void onScrollChanged() { 1573 if (mPositionListener != null) { 1574 mPositionListener.onScrollChanged(); 1575 } 1576 // Internal scroll affects the clip boundaries 1577 invalidateTextDisplayList(); 1578 } 1579 1580 /** 1581 * @return True when the TextView isFocused and has a valid zero-length selection (cursor). 1582 */ 1583 private boolean shouldBlink() { 1584 if (!isCursorVisible() || !mTextView.isFocused()) return false; 1585 1586 final int start = mTextView.getSelectionStart(); 1587 if (start < 0) return false; 1588 1589 final int end = mTextView.getSelectionEnd(); 1590 if (end < 0) return false; 1591 1592 return start == end; 1593 } 1594 1595 void makeBlink() { 1596 if (shouldBlink()) { 1597 mShowCursor = SystemClock.uptimeMillis(); 1598 if (mBlink == null) mBlink = new Blink(); 1599 mBlink.removeCallbacks(mBlink); 1600 mBlink.postAtTime(mBlink, mShowCursor + BLINK); 1601 } else { 1602 if (mBlink != null) mBlink.removeCallbacks(mBlink); 1603 } 1604 } 1605 1606 private class Blink extends Handler implements Runnable { 1607 private boolean mCancelled; 1608 1609 public void run() { 1610 if (mCancelled) { 1611 return; 1612 } 1613 1614 removeCallbacks(Blink.this); 1615 1616 if (shouldBlink()) { 1617 if (mTextView.getLayout() != null) { 1618 mTextView.invalidateCursorPath(); 1619 } 1620 1621 postAtTime(this, SystemClock.uptimeMillis() + BLINK); 1622 } 1623 } 1624 1625 void cancel() { 1626 if (!mCancelled) { 1627 removeCallbacks(Blink.this); 1628 mCancelled = true; 1629 } 1630 } 1631 1632 void uncancel() { 1633 mCancelled = false; 1634 } 1635 } 1636 1637 private DragShadowBuilder getTextThumbnailBuilder(CharSequence text) { 1638 TextView shadowView = (TextView) View.inflate(mTextView.getContext(), 1639 com.android.internal.R.layout.text_drag_thumbnail, null); 1640 1641 if (shadowView == null) { 1642 throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); 1643 } 1644 1645 if (text.length() > DRAG_SHADOW_MAX_TEXT_LENGTH) { 1646 text = text.subSequence(0, DRAG_SHADOW_MAX_TEXT_LENGTH); 1647 } 1648 shadowView.setText(text); 1649 shadowView.setTextColor(mTextView.getTextColors()); 1650 1651 shadowView.setTextAppearance(mTextView.getContext(), R.styleable.Theme_textAppearanceLarge); 1652 shadowView.setGravity(Gravity.CENTER); 1653 1654 shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 1655 ViewGroup.LayoutParams.WRAP_CONTENT)); 1656 1657 final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); 1658 shadowView.measure(size, size); 1659 1660 shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight()); 1661 shadowView.invalidate(); 1662 return new DragShadowBuilder(shadowView); 1663 } 1664 1665 private static class DragLocalState { 1666 public TextView sourceTextView; 1667 public int start, end; 1668 1669 public DragLocalState(TextView sourceTextView, int start, int end) { 1670 this.sourceTextView = sourceTextView; 1671 this.start = start; 1672 this.end = end; 1673 } 1674 } 1675 1676 void onDrop(DragEvent event) { 1677 StringBuilder content = new StringBuilder(""); 1678 ClipData clipData = event.getClipData(); 1679 final int itemCount = clipData.getItemCount(); 1680 for (int i=0; i < itemCount; i++) { 1681 Item item = clipData.getItemAt(i); 1682 content.append(item.coerceToText(mTextView.getContext())); 1683 } 1684 1685 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 1686 1687 Object localState = event.getLocalState(); 1688 DragLocalState dragLocalState = null; 1689 if (localState instanceof DragLocalState) { 1690 dragLocalState = (DragLocalState) localState; 1691 } 1692 boolean dragDropIntoItself = dragLocalState != null && 1693 dragLocalState.sourceTextView == mTextView; 1694 1695 if (dragDropIntoItself) { 1696 if (offset >= dragLocalState.start && offset < dragLocalState.end) { 1697 // A drop inside the original selection discards the drop. 1698 return; 1699 } 1700 } 1701 1702 final int originalLength = mTextView.getText().length(); 1703 long minMax = mTextView.prepareSpacesAroundPaste(offset, offset, content); 1704 int min = TextUtils.unpackRangeStartFromLong(minMax); 1705 int max = TextUtils.unpackRangeEndFromLong(minMax); 1706 1707 Selection.setSelection((Spannable) mTextView.getText(), max); 1708 mTextView.replaceText_internal(min, max, content); 1709 1710 if (dragDropIntoItself) { 1711 int dragSourceStart = dragLocalState.start; 1712 int dragSourceEnd = dragLocalState.end; 1713 if (max <= dragSourceStart) { 1714 // Inserting text before selection has shifted positions 1715 final int shift = mTextView.getText().length() - originalLength; 1716 dragSourceStart += shift; 1717 dragSourceEnd += shift; 1718 } 1719 1720 // Delete original selection 1721 mTextView.deleteText_internal(dragSourceStart, dragSourceEnd); 1722 1723 // Make sure we do not leave two adjacent spaces. 1724 CharSequence t = mTextView.getTransformedText(dragSourceStart - 1, dragSourceStart + 1); 1725 if ( (dragSourceStart == 0 || Character.isSpaceChar(t.charAt(0))) && 1726 (dragSourceStart == mTextView.getText().length() || 1727 Character.isSpaceChar(t.charAt(1))) ) { 1728 final int pos = dragSourceStart == mTextView.getText().length() ? 1729 dragSourceStart - 1 : dragSourceStart; 1730 mTextView.deleteText_internal(pos, pos + 1); 1731 } 1732 } 1733 } 1734 1735 public void addSpanWatchers(Spannable text) { 1736 final int textLength = text.length(); 1737 1738 if (mKeyListener != null) { 1739 text.setSpan(mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 1740 } 1741 1742 if (mEasyEditSpanController == null) { 1743 mEasyEditSpanController = new EasyEditSpanController(); 1744 } 1745 text.setSpan(mEasyEditSpanController, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 1746 } 1747 1748 /** 1749 * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related 1750 * pop-up should be displayed. 1751 */ 1752 class EasyEditSpanController implements SpanWatcher { 1753 1754 private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs 1755 1756 private EasyEditPopupWindow mPopupWindow; 1757 1758 private Runnable mHidePopup; 1759 1760 @Override 1761 public void onSpanAdded(Spannable text, Object span, int start, int end) { 1762 if (span instanceof EasyEditSpan) { 1763 if (mPopupWindow == null) { 1764 mPopupWindow = new EasyEditPopupWindow(); 1765 mHidePopup = new Runnable() { 1766 @Override 1767 public void run() { 1768 hide(); 1769 } 1770 }; 1771 } 1772 1773 // Make sure there is only at most one EasyEditSpan in the text 1774 if (mPopupWindow.mEasyEditSpan != null) { 1775 text.removeSpan(mPopupWindow.mEasyEditSpan); 1776 } 1777 1778 mPopupWindow.setEasyEditSpan((EasyEditSpan) span); 1779 1780 if (mTextView.getWindowVisibility() != View.VISIBLE) { 1781 // The window is not visible yet, ignore the text change. 1782 return; 1783 } 1784 1785 if (mTextView.getLayout() == null) { 1786 // The view has not been laid out yet, ignore the text change 1787 return; 1788 } 1789 1790 if (extractedTextModeWillBeStarted()) { 1791 // The input is in extract mode. Do not handle the easy edit in 1792 // the original TextView, as the ExtractEditText will do 1793 return; 1794 } 1795 1796 mPopupWindow.show(); 1797 mTextView.removeCallbacks(mHidePopup); 1798 mTextView.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS); 1799 } 1800 } 1801 1802 @Override 1803 public void onSpanRemoved(Spannable text, Object span, int start, int end) { 1804 if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { 1805 hide(); 1806 } 1807 } 1808 1809 @Override 1810 public void onSpanChanged(Spannable text, Object span, int previousStart, int previousEnd, 1811 int newStart, int newEnd) { 1812 if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { 1813 text.removeSpan(mPopupWindow.mEasyEditSpan); 1814 } 1815 } 1816 1817 public void hide() { 1818 if (mPopupWindow != null) { 1819 mPopupWindow.hide(); 1820 mTextView.removeCallbacks(mHidePopup); 1821 } 1822 } 1823 } 1824 1825 /** 1826 * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled 1827 * by {@link EasyEditSpanController}. 1828 */ 1829 private class EasyEditPopupWindow extends PinnedPopupWindow 1830 implements OnClickListener { 1831 private static final int POPUP_TEXT_LAYOUT = 1832 com.android.internal.R.layout.text_edit_action_popup_text; 1833 private TextView mDeleteTextView; 1834 private EasyEditSpan mEasyEditSpan; 1835 1836 @Override 1837 protected void createPopupWindow() { 1838 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 1839 com.android.internal.R.attr.textSelectHandleWindowStyle); 1840 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 1841 mPopupWindow.setClippingEnabled(true); 1842 } 1843 1844 @Override 1845 protected void initContentView() { 1846 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 1847 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 1848 mContentView = linearLayout; 1849 mContentView.setBackgroundResource( 1850 com.android.internal.R.drawable.text_edit_side_paste_window); 1851 1852 LayoutInflater inflater = (LayoutInflater)mTextView.getContext(). 1853 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 1854 1855 LayoutParams wrapContent = new LayoutParams( 1856 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 1857 1858 mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 1859 mDeleteTextView.setLayoutParams(wrapContent); 1860 mDeleteTextView.setText(com.android.internal.R.string.delete); 1861 mDeleteTextView.setOnClickListener(this); 1862 mContentView.addView(mDeleteTextView); 1863 } 1864 1865 public void setEasyEditSpan(EasyEditSpan easyEditSpan) { 1866 mEasyEditSpan = easyEditSpan; 1867 } 1868 1869 @Override 1870 public void onClick(View view) { 1871 if (view == mDeleteTextView) { 1872 Editable editable = (Editable) mTextView.getText(); 1873 int start = editable.getSpanStart(mEasyEditSpan); 1874 int end = editable.getSpanEnd(mEasyEditSpan); 1875 if (start >= 0 && end >= 0) { 1876 mTextView.deleteText_internal(start, end); 1877 } 1878 } 1879 } 1880 1881 @Override 1882 protected int getTextOffset() { 1883 // Place the pop-up at the end of the span 1884 Editable editable = (Editable) mTextView.getText(); 1885 return editable.getSpanEnd(mEasyEditSpan); 1886 } 1887 1888 @Override 1889 protected int getVerticalLocalPosition(int line) { 1890 return mTextView.getLayout().getLineBottom(line); 1891 } 1892 1893 @Override 1894 protected int clipVertically(int positionY) { 1895 // As we display the pop-up below the span, no vertical clipping is required. 1896 return positionY; 1897 } 1898 } 1899 1900 private class PositionListener implements ViewTreeObserver.OnPreDrawListener { 1901 // 3 handles 1902 // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others) 1903 private final int MAXIMUM_NUMBER_OF_LISTENERS = 6; 1904 private TextViewPositionListener[] mPositionListeners = 1905 new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS]; 1906 private boolean mCanMove[] = new boolean[MAXIMUM_NUMBER_OF_LISTENERS]; 1907 private boolean mPositionHasChanged = true; 1908 // Absolute position of the TextView with respect to its parent window 1909 private int mPositionX, mPositionY; 1910 private int mNumberOfListeners; 1911 private boolean mScrollHasChanged; 1912 final int[] mTempCoords = new int[2]; 1913 1914 public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) { 1915 if (mNumberOfListeners == 0) { 1916 updatePosition(); 1917 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 1918 vto.addOnPreDrawListener(this); 1919 } 1920 1921 int emptySlotIndex = -1; 1922 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 1923 TextViewPositionListener listener = mPositionListeners[i]; 1924 if (listener == positionListener) { 1925 return; 1926 } else if (emptySlotIndex < 0 && listener == null) { 1927 emptySlotIndex = i; 1928 } 1929 } 1930 1931 mPositionListeners[emptySlotIndex] = positionListener; 1932 mCanMove[emptySlotIndex] = canMove; 1933 mNumberOfListeners++; 1934 } 1935 1936 public void removeSubscriber(TextViewPositionListener positionListener) { 1937 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 1938 if (mPositionListeners[i] == positionListener) { 1939 mPositionListeners[i] = null; 1940 mNumberOfListeners--; 1941 break; 1942 } 1943 } 1944 1945 if (mNumberOfListeners == 0) { 1946 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 1947 vto.removeOnPreDrawListener(this); 1948 } 1949 } 1950 1951 public int getPositionX() { 1952 return mPositionX; 1953 } 1954 1955 public int getPositionY() { 1956 return mPositionY; 1957 } 1958 1959 @Override 1960 public boolean onPreDraw() { 1961 updatePosition(); 1962 1963 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 1964 if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) { 1965 TextViewPositionListener positionListener = mPositionListeners[i]; 1966 if (positionListener != null) { 1967 positionListener.updatePosition(mPositionX, mPositionY, 1968 mPositionHasChanged, mScrollHasChanged); 1969 } 1970 } 1971 } 1972 1973 mScrollHasChanged = false; 1974 return true; 1975 } 1976 1977 private void updatePosition() { 1978 mTextView.getLocationInWindow(mTempCoords); 1979 1980 mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY; 1981 1982 mPositionX = mTempCoords[0]; 1983 mPositionY = mTempCoords[1]; 1984 } 1985 1986 public void onScrollChanged() { 1987 mScrollHasChanged = true; 1988 } 1989 } 1990 1991 private abstract class PinnedPopupWindow implements TextViewPositionListener { 1992 protected PopupWindow mPopupWindow; 1993 protected ViewGroup mContentView; 1994 int mPositionX, mPositionY; 1995 1996 protected abstract void createPopupWindow(); 1997 protected abstract void initContentView(); 1998 protected abstract int getTextOffset(); 1999 protected abstract int getVerticalLocalPosition(int line); 2000 protected abstract int clipVertically(int positionY); 2001 2002 public PinnedPopupWindow() { 2003 createPopupWindow(); 2004 2005 mPopupWindow.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 2006 mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 2007 mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 2008 2009 initContentView(); 2010 2011 LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2012 ViewGroup.LayoutParams.WRAP_CONTENT); 2013 mContentView.setLayoutParams(wrapContent); 2014 2015 mPopupWindow.setContentView(mContentView); 2016 } 2017 2018 public void show() { 2019 getPositionListener().addSubscriber(this, false /* offset is fixed */); 2020 2021 computeLocalPosition(); 2022 2023 final PositionListener positionListener = getPositionListener(); 2024 updatePosition(positionListener.getPositionX(), positionListener.getPositionY()); 2025 } 2026 2027 protected void measureContent() { 2028 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2029 mContentView.measure( 2030 View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, 2031 View.MeasureSpec.AT_MOST), 2032 View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, 2033 View.MeasureSpec.AT_MOST)); 2034 } 2035 2036 /* The popup window will be horizontally centered on the getTextOffset() and vertically 2037 * positioned according to viewportToContentHorizontalOffset. 2038 * 2039 * This method assumes that mContentView has properly been measured from its content. */ 2040 private void computeLocalPosition() { 2041 measureContent(); 2042 final int width = mContentView.getMeasuredWidth(); 2043 final int offset = getTextOffset(); 2044 mPositionX = (int) (mTextView.getLayout().getPrimaryHorizontal(offset) - width / 2.0f); 2045 mPositionX += mTextView.viewportToContentHorizontalOffset(); 2046 2047 final int line = mTextView.getLayout().getLineForOffset(offset); 2048 mPositionY = getVerticalLocalPosition(line); 2049 mPositionY += mTextView.viewportToContentVerticalOffset(); 2050 } 2051 2052 private void updatePosition(int parentPositionX, int parentPositionY) { 2053 int positionX = parentPositionX + mPositionX; 2054 int positionY = parentPositionY + mPositionY; 2055 2056 positionY = clipVertically(positionY); 2057 2058 // Horizontal clipping 2059 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2060 final int width = mContentView.getMeasuredWidth(); 2061 positionX = Math.min(displayMetrics.widthPixels - width, positionX); 2062 positionX = Math.max(0, positionX); 2063 2064 if (isShowing()) { 2065 mPopupWindow.update(positionX, positionY, -1, -1); 2066 } else { 2067 mPopupWindow.showAtLocation(mTextView, Gravity.NO_GRAVITY, 2068 positionX, positionY); 2069 } 2070 } 2071 2072 public void hide() { 2073 mPopupWindow.dismiss(); 2074 getPositionListener().removeSubscriber(this); 2075 } 2076 2077 @Override 2078 public void updatePosition(int parentPositionX, int parentPositionY, 2079 boolean parentPositionChanged, boolean parentScrolled) { 2080 // Either parentPositionChanged or parentScrolled is true, check if still visible 2081 if (isShowing() && isOffsetVisible(getTextOffset())) { 2082 if (parentScrolled) computeLocalPosition(); 2083 updatePosition(parentPositionX, parentPositionY); 2084 } else { 2085 hide(); 2086 } 2087 } 2088 2089 public boolean isShowing() { 2090 return mPopupWindow.isShowing(); 2091 } 2092 } 2093 2094 private class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener { 2095 private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE; 2096 private static final int ADD_TO_DICTIONARY = -1; 2097 private static final int DELETE_TEXT = -2; 2098 private SuggestionInfo[] mSuggestionInfos; 2099 private int mNumberOfSuggestions; 2100 private boolean mCursorWasVisibleBeforeSuggestions; 2101 private boolean mIsShowingUp = false; 2102 private SuggestionAdapter mSuggestionsAdapter; 2103 private final Comparator<SuggestionSpan> mSuggestionSpanComparator; 2104 private final HashMap<SuggestionSpan, Integer> mSpansLengths; 2105 2106 private class CustomPopupWindow extends PopupWindow { 2107 public CustomPopupWindow(Context context, int defStyle) { 2108 super(context, null, defStyle); 2109 } 2110 2111 @Override 2112 public void dismiss() { 2113 super.dismiss(); 2114 2115 getPositionListener().removeSubscriber(SuggestionsPopupWindow.this); 2116 2117 // Safe cast since show() checks that mTextView.getText() is an Editable 2118 ((Spannable) mTextView.getText()).removeSpan(mSuggestionRangeSpan); 2119 2120 mTextView.setCursorVisible(mCursorWasVisibleBeforeSuggestions); 2121 if (hasInsertionController()) { 2122 getInsertionController().show(); 2123 } 2124 } 2125 } 2126 2127 public SuggestionsPopupWindow() { 2128 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 2129 mSuggestionSpanComparator = new SuggestionSpanComparator(); 2130 mSpansLengths = new HashMap<SuggestionSpan, Integer>(); 2131 } 2132 2133 @Override 2134 protected void createPopupWindow() { 2135 mPopupWindow = new CustomPopupWindow(mTextView.getContext(), 2136 com.android.internal.R.attr.textSuggestionsWindowStyle); 2137 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 2138 mPopupWindow.setFocusable(true); 2139 mPopupWindow.setClippingEnabled(false); 2140 } 2141 2142 @Override 2143 protected void initContentView() { 2144 ListView listView = new ListView(mTextView.getContext()); 2145 mSuggestionsAdapter = new SuggestionAdapter(); 2146 listView.setAdapter(mSuggestionsAdapter); 2147 listView.setOnItemClickListener(this); 2148 mContentView = listView; 2149 2150 // Inflate the suggestion items once and for all. + 2 for add to dictionary and delete 2151 mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS + 2]; 2152 for (int i = 0; i < mSuggestionInfos.length; i++) { 2153 mSuggestionInfos[i] = new SuggestionInfo(); 2154 } 2155 } 2156 2157 public boolean isShowingUp() { 2158 return mIsShowingUp; 2159 } 2160 2161 public void onParentLostFocus() { 2162 mIsShowingUp = false; 2163 } 2164 2165 private class SuggestionInfo { 2166 int suggestionStart, suggestionEnd; // range of actual suggestion within text 2167 SuggestionSpan suggestionSpan; // the SuggestionSpan that this TextView represents 2168 int suggestionIndex; // the index of this suggestion inside suggestionSpan 2169 SpannableStringBuilder text = new SpannableStringBuilder(); 2170 TextAppearanceSpan highlightSpan = new TextAppearanceSpan(mTextView.getContext(), 2171 android.R.style.TextAppearance_SuggestionHighlight); 2172 } 2173 2174 private class SuggestionAdapter extends BaseAdapter { 2175 private LayoutInflater mInflater = (LayoutInflater) mTextView.getContext(). 2176 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2177 2178 @Override 2179 public int getCount() { 2180 return mNumberOfSuggestions; 2181 } 2182 2183 @Override 2184 public Object getItem(int position) { 2185 return mSuggestionInfos[position]; 2186 } 2187 2188 @Override 2189 public long getItemId(int position) { 2190 return position; 2191 } 2192 2193 @Override 2194 public View getView(int position, View convertView, ViewGroup parent) { 2195 TextView textView = (TextView) convertView; 2196 2197 if (textView == null) { 2198 textView = (TextView) mInflater.inflate(mTextView.mTextEditSuggestionItemLayout, 2199 parent, false); 2200 } 2201 2202 final SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 2203 textView.setText(suggestionInfo.text); 2204 2205 if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY) { 2206 textView.setCompoundDrawablesWithIntrinsicBounds( 2207 com.android.internal.R.drawable.ic_suggestions_add, 0, 0, 0); 2208 } else if (suggestionInfo.suggestionIndex == DELETE_TEXT) { 2209 textView.setCompoundDrawablesWithIntrinsicBounds( 2210 com.android.internal.R.drawable.ic_suggestions_delete, 0, 0, 0); 2211 } else { 2212 textView.setCompoundDrawables(null, null, null, null); 2213 } 2214 2215 return textView; 2216 } 2217 } 2218 2219 private class SuggestionSpanComparator implements Comparator<SuggestionSpan> { 2220 public int compare(SuggestionSpan span1, SuggestionSpan span2) { 2221 final int flag1 = span1.getFlags(); 2222 final int flag2 = span2.getFlags(); 2223 if (flag1 != flag2) { 2224 // The order here should match what is used in updateDrawState 2225 final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 2226 final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 2227 final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0; 2228 final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0; 2229 if (easy1 && !misspelled1) return -1; 2230 if (easy2 && !misspelled2) return 1; 2231 if (misspelled1) return -1; 2232 if (misspelled2) return 1; 2233 } 2234 2235 return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue(); 2236 } 2237 } 2238 2239 /** 2240 * Returns the suggestion spans that cover the current cursor position. The suggestion 2241 * spans are sorted according to the length of text that they are attached to. 2242 */ 2243 private SuggestionSpan[] getSuggestionSpans() { 2244 int pos = mTextView.getSelectionStart(); 2245 Spannable spannable = (Spannable) mTextView.getText(); 2246 SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class); 2247 2248 mSpansLengths.clear(); 2249 for (SuggestionSpan suggestionSpan : suggestionSpans) { 2250 int start = spannable.getSpanStart(suggestionSpan); 2251 int end = spannable.getSpanEnd(suggestionSpan); 2252 mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start)); 2253 } 2254 2255 // The suggestions are sorted according to their types (easy correction first, then 2256 // misspelled) and to the length of the text that they cover (shorter first). 2257 Arrays.sort(suggestionSpans, mSuggestionSpanComparator); 2258 return suggestionSpans; 2259 } 2260 2261 @Override 2262 public void show() { 2263 if (!(mTextView.getText() instanceof Editable)) return; 2264 2265 if (updateSuggestions()) { 2266 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 2267 mTextView.setCursorVisible(false); 2268 mIsShowingUp = true; 2269 super.show(); 2270 } 2271 } 2272 2273 @Override 2274 protected void measureContent() { 2275 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2276 final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec( 2277 displayMetrics.widthPixels, View.MeasureSpec.AT_MOST); 2278 final int verticalMeasure = View.MeasureSpec.makeMeasureSpec( 2279 displayMetrics.heightPixels, View.MeasureSpec.AT_MOST); 2280 2281 int width = 0; 2282 View view = null; 2283 for (int i = 0; i < mNumberOfSuggestions; i++) { 2284 view = mSuggestionsAdapter.getView(i, view, mContentView); 2285 view.getLayoutParams().width = LayoutParams.WRAP_CONTENT; 2286 view.measure(horizontalMeasure, verticalMeasure); 2287 width = Math.max(width, view.getMeasuredWidth()); 2288 } 2289 2290 // Enforce the width based on actual text widths 2291 mContentView.measure( 2292 View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY), 2293 verticalMeasure); 2294 2295 Drawable popupBackground = mPopupWindow.getBackground(); 2296 if (popupBackground != null) { 2297 if (mTempRect == null) mTempRect = new Rect(); 2298 popupBackground.getPadding(mTempRect); 2299 width += mTempRect.left + mTempRect.right; 2300 } 2301 mPopupWindow.setWidth(width); 2302 } 2303 2304 @Override 2305 protected int getTextOffset() { 2306 return mTextView.getSelectionStart(); 2307 } 2308 2309 @Override 2310 protected int getVerticalLocalPosition(int line) { 2311 return mTextView.getLayout().getLineBottom(line); 2312 } 2313 2314 @Override 2315 protected int clipVertically(int positionY) { 2316 final int height = mContentView.getMeasuredHeight(); 2317 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2318 return Math.min(positionY, displayMetrics.heightPixels - height); 2319 } 2320 2321 @Override 2322 public void hide() { 2323 super.hide(); 2324 } 2325 2326 private boolean updateSuggestions() { 2327 Spannable spannable = (Spannable) mTextView.getText(); 2328 SuggestionSpan[] suggestionSpans = getSuggestionSpans(); 2329 2330 final int nbSpans = suggestionSpans.length; 2331 // Suggestions are shown after a delay: the underlying spans may have been removed 2332 if (nbSpans == 0) return false; 2333 2334 mNumberOfSuggestions = 0; 2335 int spanUnionStart = mTextView.getText().length(); 2336 int spanUnionEnd = 0; 2337 2338 SuggestionSpan misspelledSpan = null; 2339 int underlineColor = 0; 2340 2341 for (int spanIndex = 0; spanIndex < nbSpans; spanIndex++) { 2342 SuggestionSpan suggestionSpan = suggestionSpans[spanIndex]; 2343 final int spanStart = spannable.getSpanStart(suggestionSpan); 2344 final int spanEnd = spannable.getSpanEnd(suggestionSpan); 2345 spanUnionStart = Math.min(spanStart, spanUnionStart); 2346 spanUnionEnd = Math.max(spanEnd, spanUnionEnd); 2347 2348 if ((suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) { 2349 misspelledSpan = suggestionSpan; 2350 } 2351 2352 // The first span dictates the background color of the highlighted text 2353 if (spanIndex == 0) underlineColor = suggestionSpan.getUnderlineColor(); 2354 2355 String[] suggestions = suggestionSpan.getSuggestions(); 2356 int nbSuggestions = suggestions.length; 2357 for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) { 2358 String suggestion = suggestions[suggestionIndex]; 2359 2360 boolean suggestionIsDuplicate = false; 2361 for (int i = 0; i < mNumberOfSuggestions; i++) { 2362 if (mSuggestionInfos[i].text.toString().equals(suggestion)) { 2363 SuggestionSpan otherSuggestionSpan = mSuggestionInfos[i].suggestionSpan; 2364 final int otherSpanStart = spannable.getSpanStart(otherSuggestionSpan); 2365 final int otherSpanEnd = spannable.getSpanEnd(otherSuggestionSpan); 2366 if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) { 2367 suggestionIsDuplicate = true; 2368 break; 2369 } 2370 } 2371 } 2372 2373 if (!suggestionIsDuplicate) { 2374 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2375 suggestionInfo.suggestionSpan = suggestionSpan; 2376 suggestionInfo.suggestionIndex = suggestionIndex; 2377 suggestionInfo.text.replace(0, suggestionInfo.text.length(), suggestion); 2378 2379 mNumberOfSuggestions++; 2380 2381 if (mNumberOfSuggestions == MAX_NUMBER_SUGGESTIONS) { 2382 // Also end outer for loop 2383 spanIndex = nbSpans; 2384 break; 2385 } 2386 } 2387 } 2388 } 2389 2390 for (int i = 0; i < mNumberOfSuggestions; i++) { 2391 highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd); 2392 } 2393 2394 // Add "Add to dictionary" item if there is a span with the misspelled flag 2395 if (misspelledSpan != null) { 2396 final int misspelledStart = spannable.getSpanStart(misspelledSpan); 2397 final int misspelledEnd = spannable.getSpanEnd(misspelledSpan); 2398 if (misspelledStart >= 0 && misspelledEnd > misspelledStart) { 2399 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2400 suggestionInfo.suggestionSpan = misspelledSpan; 2401 suggestionInfo.suggestionIndex = ADD_TO_DICTIONARY; 2402 suggestionInfo.text.replace(0, suggestionInfo.text.length(), mTextView. 2403 getContext().getString(com.android.internal.R.string.addToDictionary)); 2404 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0, 2405 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2406 2407 mNumberOfSuggestions++; 2408 } 2409 } 2410 2411 // Delete item 2412 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2413 suggestionInfo.suggestionSpan = null; 2414 suggestionInfo.suggestionIndex = DELETE_TEXT; 2415 suggestionInfo.text.replace(0, suggestionInfo.text.length(), 2416 mTextView.getContext().getString(com.android.internal.R.string.deleteText)); 2417 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0, 2418 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2419 mNumberOfSuggestions++; 2420 2421 if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan(); 2422 if (underlineColor == 0) { 2423 // Fallback on the default highlight color when the first span does not provide one 2424 mSuggestionRangeSpan.setBackgroundColor(mTextView.mHighlightColor); 2425 } else { 2426 final float BACKGROUND_TRANSPARENCY = 0.4f; 2427 final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY); 2428 mSuggestionRangeSpan.setBackgroundColor( 2429 (underlineColor & 0x00FFFFFF) + (newAlpha << 24)); 2430 } 2431 spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd, 2432 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2433 2434 mSuggestionsAdapter.notifyDataSetChanged(); 2435 return true; 2436 } 2437 2438 private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart, 2439 int unionEnd) { 2440 final Spannable text = (Spannable) mTextView.getText(); 2441 final int spanStart = text.getSpanStart(suggestionInfo.suggestionSpan); 2442 final int spanEnd = text.getSpanEnd(suggestionInfo.suggestionSpan); 2443 2444 // Adjust the start/end of the suggestion span 2445 suggestionInfo.suggestionStart = spanStart - unionStart; 2446 suggestionInfo.suggestionEnd = suggestionInfo.suggestionStart 2447 + suggestionInfo.text.length(); 2448 2449 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 2450 suggestionInfo.text.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2451 2452 // Add the text before and after the span. 2453 final String textAsString = text.toString(); 2454 suggestionInfo.text.insert(0, textAsString.substring(unionStart, spanStart)); 2455 suggestionInfo.text.append(textAsString.substring(spanEnd, unionEnd)); 2456 } 2457 2458 @Override 2459 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 2460 Editable editable = (Editable) mTextView.getText(); 2461 SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 2462 2463 if (suggestionInfo.suggestionIndex == DELETE_TEXT) { 2464 final int spanUnionStart = editable.getSpanStart(mSuggestionRangeSpan); 2465 int spanUnionEnd = editable.getSpanEnd(mSuggestionRangeSpan); 2466 if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) { 2467 // Do not leave two adjacent spaces after deletion, or one at beginning of text 2468 if (spanUnionEnd < editable.length() && 2469 Character.isSpaceChar(editable.charAt(spanUnionEnd)) && 2470 (spanUnionStart == 0 || 2471 Character.isSpaceChar(editable.charAt(spanUnionStart - 1)))) { 2472 spanUnionEnd = spanUnionEnd + 1; 2473 } 2474 mTextView.deleteText_internal(spanUnionStart, spanUnionEnd); 2475 } 2476 hide(); 2477 return; 2478 } 2479 2480 final int spanStart = editable.getSpanStart(suggestionInfo.suggestionSpan); 2481 final int spanEnd = editable.getSpanEnd(suggestionInfo.suggestionSpan); 2482 if (spanStart < 0 || spanEnd <= spanStart) { 2483 // Span has been removed 2484 hide(); 2485 return; 2486 } 2487 2488 final String originalText = editable.toString().substring(spanStart, spanEnd); 2489 2490 if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY) { 2491 Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT); 2492 intent.putExtra("word", originalText); 2493 intent.putExtra("locale", mTextView.getTextServicesLocale().toString()); 2494 intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); 2495 mTextView.getContext().startActivity(intent); 2496 // There is no way to know if the word was indeed added. Re-check. 2497 // TODO The ExtractEditText should remove the span in the original text instead 2498 editable.removeSpan(suggestionInfo.suggestionSpan); 2499 updateSpellCheckSpans(spanStart, spanEnd, false); 2500 } else { 2501 // SuggestionSpans are removed by replace: save them before 2502 SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd, 2503 SuggestionSpan.class); 2504 final int length = suggestionSpans.length; 2505 int[] suggestionSpansStarts = new int[length]; 2506 int[] suggestionSpansEnds = new int[length]; 2507 int[] suggestionSpansFlags = new int[length]; 2508 for (int i = 0; i < length; i++) { 2509 final SuggestionSpan suggestionSpan = suggestionSpans[i]; 2510 suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan); 2511 suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan); 2512 suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan); 2513 2514 // Remove potential misspelled flags 2515 int suggestionSpanFlags = suggestionSpan.getFlags(); 2516 if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) > 0) { 2517 suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED; 2518 suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 2519 suggestionSpan.setFlags(suggestionSpanFlags); 2520 } 2521 } 2522 2523 final int suggestionStart = suggestionInfo.suggestionStart; 2524 final int suggestionEnd = suggestionInfo.suggestionEnd; 2525 final String suggestion = suggestionInfo.text.subSequence( 2526 suggestionStart, suggestionEnd).toString(); 2527 mTextView.replaceText_internal(spanStart, spanEnd, suggestion); 2528 2529 // Notify source IME of the suggestion pick. Do this before swaping texts. 2530 if (!TextUtils.isEmpty( 2531 suggestionInfo.suggestionSpan.getNotificationTargetClassName())) { 2532 InputMethodManager imm = InputMethodManager.peekInstance(); 2533 if (imm != null) { 2534 imm.notifySuggestionPicked(suggestionInfo.suggestionSpan, originalText, 2535 suggestionInfo.suggestionIndex); 2536 } 2537 } 2538 2539 // Swap text content between actual text and Suggestion span 2540 String[] suggestions = suggestionInfo.suggestionSpan.getSuggestions(); 2541 suggestions[suggestionInfo.suggestionIndex] = originalText; 2542 2543 // Restore previous SuggestionSpans 2544 final int lengthDifference = suggestion.length() - (spanEnd - spanStart); 2545 for (int i = 0; i < length; i++) { 2546 // Only spans that include the modified region make sense after replacement 2547 // Spans partially included in the replaced region are removed, there is no 2548 // way to assign them a valid range after replacement 2549 if (suggestionSpansStarts[i] <= spanStart && 2550 suggestionSpansEnds[i] >= spanEnd) { 2551 mTextView.setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i], 2552 suggestionSpansEnds[i] + lengthDifference, suggestionSpansFlags[i]); 2553 } 2554 } 2555 2556 // Move cursor at the end of the replaced word 2557 final int newCursorPosition = spanEnd + lengthDifference; 2558 mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); 2559 } 2560 2561 hide(); 2562 } 2563 } 2564 2565 /** 2566 * An ActionMode Callback class that is used to provide actions while in text selection mode. 2567 * 2568 * The default callback provides a subset of Select All, Cut, Copy and Paste actions, depending 2569 * on which of these this TextView supports. 2570 */ 2571 private class SelectionActionModeCallback implements ActionMode.Callback { 2572 2573 @Override 2574 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 2575 TypedArray styledAttributes = mTextView.getContext().obtainStyledAttributes( 2576 com.android.internal.R.styleable.SelectionModeDrawables); 2577 2578 boolean allowText = mTextView.getContext().getResources().getBoolean( 2579 com.android.internal.R.bool.config_allowActionMenuItemTextWithIcon); 2580 2581 mode.setTitle(mTextView.getContext().getString( 2582 com.android.internal.R.string.textSelectionCABTitle)); 2583 mode.setSubtitle(null); 2584 mode.setTitleOptionalHint(true); 2585 2586 int selectAllIconId = 0; // No icon by default 2587 if (!allowText) { 2588 // Provide an icon, text will not be displayed on smaller screens. 2589 selectAllIconId = styledAttributes.getResourceId( 2590 R.styleable.SelectionModeDrawables_actionModeSelectAllDrawable, 0); 2591 } 2592 2593 menu.add(0, TextView.ID_SELECT_ALL, 0, com.android.internal.R.string.selectAll). 2594 setIcon(selectAllIconId). 2595 setAlphabeticShortcut('a'). 2596 setShowAsAction( 2597 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2598 2599 if (mTextView.canCut()) { 2600 menu.add(0, TextView.ID_CUT, 0, com.android.internal.R.string.cut). 2601 setIcon(styledAttributes.getResourceId( 2602 R.styleable.SelectionModeDrawables_actionModeCutDrawable, 0)). 2603 setAlphabeticShortcut('x'). 2604 setShowAsAction( 2605 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2606 } 2607 2608 if (mTextView.canCopy()) { 2609 menu.add(0, TextView.ID_COPY, 0, com.android.internal.R.string.copy). 2610 setIcon(styledAttributes.getResourceId( 2611 R.styleable.SelectionModeDrawables_actionModeCopyDrawable, 0)). 2612 setAlphabeticShortcut('c'). 2613 setShowAsAction( 2614 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2615 } 2616 2617 if (mTextView.canPaste()) { 2618 menu.add(0, TextView.ID_PASTE, 0, com.android.internal.R.string.paste). 2619 setIcon(styledAttributes.getResourceId( 2620 R.styleable.SelectionModeDrawables_actionModePasteDrawable, 0)). 2621 setAlphabeticShortcut('v'). 2622 setShowAsAction( 2623 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2624 } 2625 2626 styledAttributes.recycle(); 2627 2628 if (mCustomSelectionActionModeCallback != null) { 2629 if (!mCustomSelectionActionModeCallback.onCreateActionMode(mode, menu)) { 2630 // The custom mode can choose to cancel the action mode 2631 return false; 2632 } 2633 } 2634 2635 if (menu.hasVisibleItems() || mode.getCustomView() != null) { 2636 getSelectionController().show(); 2637 return true; 2638 } else { 2639 return false; 2640 } 2641 } 2642 2643 @Override 2644 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 2645 if (mCustomSelectionActionModeCallback != null) { 2646 return mCustomSelectionActionModeCallback.onPrepareActionMode(mode, menu); 2647 } 2648 return true; 2649 } 2650 2651 @Override 2652 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 2653 if (mCustomSelectionActionModeCallback != null && 2654 mCustomSelectionActionModeCallback.onActionItemClicked(mode, item)) { 2655 return true; 2656 } 2657 return mTextView.onTextContextMenuItem(item.getItemId()); 2658 } 2659 2660 @Override 2661 public void onDestroyActionMode(ActionMode mode) { 2662 if (mCustomSelectionActionModeCallback != null) { 2663 mCustomSelectionActionModeCallback.onDestroyActionMode(mode); 2664 } 2665 Selection.setSelection((Spannable) mTextView.getText(), mTextView.getSelectionEnd()); 2666 2667 if (mSelectionModifierCursorController != null) { 2668 mSelectionModifierCursorController.hide(); 2669 } 2670 2671 mSelectionActionMode = null; 2672 } 2673 } 2674 2675 private class ActionPopupWindow extends PinnedPopupWindow implements OnClickListener { 2676 private static final int POPUP_TEXT_LAYOUT = 2677 com.android.internal.R.layout.text_edit_action_popup_text; 2678 private TextView mPasteTextView; 2679 private TextView mReplaceTextView; 2680 2681 @Override 2682 protected void createPopupWindow() { 2683 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 2684 com.android.internal.R.attr.textSelectHandleWindowStyle); 2685 mPopupWindow.setClippingEnabled(true); 2686 } 2687 2688 @Override 2689 protected void initContentView() { 2690 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 2691 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 2692 mContentView = linearLayout; 2693 mContentView.setBackgroundResource( 2694 com.android.internal.R.drawable.text_edit_paste_window); 2695 2696 LayoutInflater inflater = (LayoutInflater) mTextView.getContext(). 2697 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2698 2699 LayoutParams wrapContent = new LayoutParams( 2700 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 2701 2702 mPasteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2703 mPasteTextView.setLayoutParams(wrapContent); 2704 mContentView.addView(mPasteTextView); 2705 mPasteTextView.setText(com.android.internal.R.string.paste); 2706 mPasteTextView.setOnClickListener(this); 2707 2708 mReplaceTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2709 mReplaceTextView.setLayoutParams(wrapContent); 2710 mContentView.addView(mReplaceTextView); 2711 mReplaceTextView.setText(com.android.internal.R.string.replace); 2712 mReplaceTextView.setOnClickListener(this); 2713 } 2714 2715 @Override 2716 public void show() { 2717 boolean canPaste = mTextView.canPaste(); 2718 boolean canSuggest = mTextView.isSuggestionsEnabled() && isCursorInsideSuggestionSpan(); 2719 mPasteTextView.setVisibility(canPaste ? View.VISIBLE : View.GONE); 2720 mReplaceTextView.setVisibility(canSuggest ? View.VISIBLE : View.GONE); 2721 2722 if (!canPaste && !canSuggest) return; 2723 2724 super.show(); 2725 } 2726 2727 @Override 2728 public void onClick(View view) { 2729 if (view == mPasteTextView && mTextView.canPaste()) { 2730 mTextView.onTextContextMenuItem(TextView.ID_PASTE); 2731 hide(); 2732 } else if (view == mReplaceTextView) { 2733 int middle = (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 2734 stopSelectionActionMode(); 2735 Selection.setSelection((Spannable) mTextView.getText(), middle); 2736 showSuggestions(); 2737 } 2738 } 2739 2740 @Override 2741 protected int getTextOffset() { 2742 return (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 2743 } 2744 2745 @Override 2746 protected int getVerticalLocalPosition(int line) { 2747 return mTextView.getLayout().getLineTop(line) - mContentView.getMeasuredHeight(); 2748 } 2749 2750 @Override 2751 protected int clipVertically(int positionY) { 2752 if (positionY < 0) { 2753 final int offset = getTextOffset(); 2754 final Layout layout = mTextView.getLayout(); 2755 final int line = layout.getLineForOffset(offset); 2756 positionY += layout.getLineBottom(line) - layout.getLineTop(line); 2757 positionY += mContentView.getMeasuredHeight(); 2758 2759 // Assumes insertion and selection handles share the same height 2760 final Drawable handle = mTextView.getResources().getDrawable( 2761 mTextView.mTextSelectHandleRes); 2762 positionY += handle.getIntrinsicHeight(); 2763 } 2764 2765 return positionY; 2766 } 2767 } 2768 2769 private abstract class HandleView extends View implements TextViewPositionListener { 2770 protected Drawable mDrawable; 2771 protected Drawable mDrawableLtr; 2772 protected Drawable mDrawableRtl; 2773 private final PopupWindow mContainer; 2774 // Position with respect to the parent TextView 2775 private int mPositionX, mPositionY; 2776 private boolean mIsDragging; 2777 // Offset from touch position to mPosition 2778 private float mTouchToWindowOffsetX, mTouchToWindowOffsetY; 2779 protected int mHotspotX; 2780 // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up 2781 private float mTouchOffsetY; 2782 // Where the touch position should be on the handle to ensure a maximum cursor visibility 2783 private float mIdealVerticalOffset; 2784 // Parent's (TextView) previous position in window 2785 private int mLastParentX, mLastParentY; 2786 // Transient action popup window for Paste and Replace actions 2787 protected ActionPopupWindow mActionPopupWindow; 2788 // Previous text character offset 2789 private int mPreviousOffset = -1; 2790 // Previous text character offset 2791 private boolean mPositionHasChanged = true; 2792 // Used to delay the appearance of the action popup window 2793 private Runnable mActionPopupShower; 2794 2795 public HandleView(Drawable drawableLtr, Drawable drawableRtl) { 2796 super(mTextView.getContext()); 2797 mContainer = new PopupWindow(mTextView.getContext(), null, 2798 com.android.internal.R.attr.textSelectHandleWindowStyle); 2799 mContainer.setSplitTouchEnabled(true); 2800 mContainer.setClippingEnabled(false); 2801 mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 2802 mContainer.setContentView(this); 2803 2804 mDrawableLtr = drawableLtr; 2805 mDrawableRtl = drawableRtl; 2806 2807 updateDrawable(); 2808 2809 final int handleHeight = mDrawable.getIntrinsicHeight(); 2810 mTouchOffsetY = -0.3f * handleHeight; 2811 mIdealVerticalOffset = 0.7f * handleHeight; 2812 } 2813 2814 protected void updateDrawable() { 2815 final int offset = getCurrentCursorOffset(); 2816 final boolean isRtlCharAtOffset = mTextView.getLayout().isRtlCharAt(offset); 2817 mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr; 2818 mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset); 2819 } 2820 2821 protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun); 2822 2823 // Touch-up filter: number of previous positions remembered 2824 private static final int HISTORY_SIZE = 5; 2825 private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150; 2826 private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350; 2827 private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; 2828 private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; 2829 private int mPreviousOffsetIndex = 0; 2830 private int mNumberPreviousOffsets = 0; 2831 2832 private void startTouchUpFilter(int offset) { 2833 mNumberPreviousOffsets = 0; 2834 addPositionToTouchUpFilter(offset); 2835 } 2836 2837 private void addPositionToTouchUpFilter(int offset) { 2838 mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; 2839 mPreviousOffsets[mPreviousOffsetIndex] = offset; 2840 mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); 2841 mNumberPreviousOffsets++; 2842 } 2843 2844 private void filterOnTouchUp() { 2845 final long now = SystemClock.uptimeMillis(); 2846 int i = 0; 2847 int index = mPreviousOffsetIndex; 2848 final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); 2849 while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) { 2850 i++; 2851 index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; 2852 } 2853 2854 if (i > 0 && i < iMax && 2855 (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) { 2856 positionAtCursorOffset(mPreviousOffsets[index], false); 2857 } 2858 } 2859 2860 public boolean offsetHasBeenChanged() { 2861 return mNumberPreviousOffsets > 1; 2862 } 2863 2864 @Override 2865 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 2866 setMeasuredDimension(mDrawable.getIntrinsicWidth(), mDrawable.getIntrinsicHeight()); 2867 } 2868 2869 public void show() { 2870 if (isShowing()) return; 2871 2872 getPositionListener().addSubscriber(this, true /* local position may change */); 2873 2874 // Make sure the offset is always considered new, even when focusing at same position 2875 mPreviousOffset = -1; 2876 positionAtCursorOffset(getCurrentCursorOffset(), false); 2877 2878 hideActionPopupWindow(); 2879 } 2880 2881 protected void dismiss() { 2882 mIsDragging = false; 2883 mContainer.dismiss(); 2884 onDetached(); 2885 } 2886 2887 public void hide() { 2888 dismiss(); 2889 2890 getPositionListener().removeSubscriber(this); 2891 } 2892 2893 void showActionPopupWindow(int delay) { 2894 if (mActionPopupWindow == null) { 2895 mActionPopupWindow = new ActionPopupWindow(); 2896 } 2897 if (mActionPopupShower == null) { 2898 mActionPopupShower = new Runnable() { 2899 public void run() { 2900 mActionPopupWindow.show(); 2901 } 2902 }; 2903 } else { 2904 mTextView.removeCallbacks(mActionPopupShower); 2905 } 2906 mTextView.postDelayed(mActionPopupShower, delay); 2907 } 2908 2909 protected void hideActionPopupWindow() { 2910 if (mActionPopupShower != null) { 2911 mTextView.removeCallbacks(mActionPopupShower); 2912 } 2913 if (mActionPopupWindow != null) { 2914 mActionPopupWindow.hide(); 2915 } 2916 } 2917 2918 public boolean isShowing() { 2919 return mContainer.isShowing(); 2920 } 2921 2922 private boolean isVisible() { 2923 // Always show a dragging handle. 2924 if (mIsDragging) { 2925 return true; 2926 } 2927 2928 if (mTextView.isInBatchEditMode()) { 2929 return false; 2930 } 2931 2932 return isPositionVisible(mPositionX + mHotspotX, mPositionY); 2933 } 2934 2935 public abstract int getCurrentCursorOffset(); 2936 2937 protected abstract void updateSelection(int offset); 2938 2939 public abstract void updatePosition(float x, float y); 2940 2941 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 2942 // A HandleView relies on the layout, which may be nulled by external methods 2943 Layout layout = mTextView.getLayout(); 2944 if (layout == null) { 2945 // Will update controllers' state, hiding them and stopping selection mode if needed 2946 prepareCursorControllers(); 2947 return; 2948 } 2949 2950 boolean offsetChanged = offset != mPreviousOffset; 2951 if (offsetChanged || parentScrolled) { 2952 if (offsetChanged) { 2953 updateSelection(offset); 2954 addPositionToTouchUpFilter(offset); 2955 } 2956 final int line = layout.getLineForOffset(offset); 2957 2958 mPositionX = (int) (layout.getPrimaryHorizontal(offset) - 0.5f - mHotspotX); 2959 mPositionY = layout.getLineBottom(line); 2960 2961 // Take TextView's padding and scroll into account. 2962 mPositionX += mTextView.viewportToContentHorizontalOffset(); 2963 mPositionY += mTextView.viewportToContentVerticalOffset(); 2964 2965 mPreviousOffset = offset; 2966 mPositionHasChanged = true; 2967 } 2968 } 2969 2970 public void updatePosition(int parentPositionX, int parentPositionY, 2971 boolean parentPositionChanged, boolean parentScrolled) { 2972 positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled); 2973 if (parentPositionChanged || mPositionHasChanged) { 2974 if (mIsDragging) { 2975 // Update touchToWindow offset in case of parent scrolling while dragging 2976 if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) { 2977 mTouchToWindowOffsetX += parentPositionX - mLastParentX; 2978 mTouchToWindowOffsetY += parentPositionY - mLastParentY; 2979 mLastParentX = parentPositionX; 2980 mLastParentY = parentPositionY; 2981 } 2982 2983 onHandleMoved(); 2984 } 2985 2986 if (isVisible()) { 2987 final int positionX = parentPositionX + mPositionX; 2988 final int positionY = parentPositionY + mPositionY; 2989 if (isShowing()) { 2990 mContainer.update(positionX, positionY, -1, -1); 2991 } else { 2992 mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, 2993 positionX, positionY); 2994 } 2995 } else { 2996 if (isShowing()) { 2997 dismiss(); 2998 } 2999 } 3000 3001 mPositionHasChanged = false; 3002 } 3003 } 3004 3005 @Override 3006 protected void onDraw(Canvas c) { 3007 mDrawable.setBounds(0, 0, mRight - mLeft, mBottom - mTop); 3008 mDrawable.draw(c); 3009 } 3010 3011 @Override 3012 public boolean onTouchEvent(MotionEvent ev) { 3013 switch (ev.getActionMasked()) { 3014 case MotionEvent.ACTION_DOWN: { 3015 startTouchUpFilter(getCurrentCursorOffset()); 3016 mTouchToWindowOffsetX = ev.getRawX() - mPositionX; 3017 mTouchToWindowOffsetY = ev.getRawY() - mPositionY; 3018 3019 final PositionListener positionListener = getPositionListener(); 3020 mLastParentX = positionListener.getPositionX(); 3021 mLastParentY = positionListener.getPositionY(); 3022 mIsDragging = true; 3023 break; 3024 } 3025 3026 case MotionEvent.ACTION_MOVE: { 3027 final float rawX = ev.getRawX(); 3028 final float rawY = ev.getRawY(); 3029 3030 // Vertical hysteresis: vertical down movement tends to snap to ideal offset 3031 final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY; 3032 final float currentVerticalOffset = rawY - mPositionY - mLastParentY; 3033 float newVerticalOffset; 3034 if (previousVerticalOffset < mIdealVerticalOffset) { 3035 newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset); 3036 newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset); 3037 } else { 3038 newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset); 3039 newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset); 3040 } 3041 mTouchToWindowOffsetY = newVerticalOffset + mLastParentY; 3042 3043 final float newPosX = rawX - mTouchToWindowOffsetX + mHotspotX; 3044 final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY; 3045 3046 updatePosition(newPosX, newPosY); 3047 break; 3048 } 3049 3050 case MotionEvent.ACTION_UP: 3051 filterOnTouchUp(); 3052 mIsDragging = false; 3053 break; 3054 3055 case MotionEvent.ACTION_CANCEL: 3056 mIsDragging = false; 3057 break; 3058 } 3059 return true; 3060 } 3061 3062 public boolean isDragging() { 3063 return mIsDragging; 3064 } 3065 3066 void onHandleMoved() { 3067 hideActionPopupWindow(); 3068 } 3069 3070 public void onDetached() { 3071 hideActionPopupWindow(); 3072 } 3073 } 3074 3075 private class InsertionHandleView extends HandleView { 3076 private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000; 3077 private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds 3078 3079 // Used to detect taps on the insertion handle, which will affect the ActionPopupWindow 3080 private float mDownPositionX, mDownPositionY; 3081 private Runnable mHider; 3082 3083 public InsertionHandleView(Drawable drawable) { 3084 super(drawable, drawable); 3085 } 3086 3087 @Override 3088 public void show() { 3089 super.show(); 3090 3091 final long durationSinceCutOrCopy = 3092 SystemClock.uptimeMillis() - TextView.LAST_CUT_OR_COPY_TIME; 3093 if (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION) { 3094 showActionPopupWindow(0); 3095 } 3096 3097 hideAfterDelay(); 3098 } 3099 3100 public void showWithActionPopup() { 3101 show(); 3102 showActionPopupWindow(0); 3103 } 3104 3105 private void hideAfterDelay() { 3106 if (mHider == null) { 3107 mHider = new Runnable() { 3108 public void run() { 3109 hide(); 3110 } 3111 }; 3112 } else { 3113 removeHiderCallback(); 3114 } 3115 mTextView.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT); 3116 } 3117 3118 private void removeHiderCallback() { 3119 if (mHider != null) { 3120 mTextView.removeCallbacks(mHider); 3121 } 3122 } 3123 3124 @Override 3125 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3126 return drawable.getIntrinsicWidth() / 2; 3127 } 3128 3129 @Override 3130 public boolean onTouchEvent(MotionEvent ev) { 3131 final boolean result = super.onTouchEvent(ev); 3132 3133 switch (ev.getActionMasked()) { 3134 case MotionEvent.ACTION_DOWN: 3135 mDownPositionX = ev.getRawX(); 3136 mDownPositionY = ev.getRawY(); 3137 break; 3138 3139 case MotionEvent.ACTION_UP: 3140 if (!offsetHasBeenChanged()) { 3141 final float deltaX = mDownPositionX - ev.getRawX(); 3142 final float deltaY = mDownPositionY - ev.getRawY(); 3143 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3144 3145 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 3146 mTextView.getContext()); 3147 final int touchSlop = viewConfiguration.getScaledTouchSlop(); 3148 3149 if (distanceSquared < touchSlop * touchSlop) { 3150 if (mActionPopupWindow != null && mActionPopupWindow.isShowing()) { 3151 // Tapping on the handle dismisses the displayed action popup 3152 mActionPopupWindow.hide(); 3153 } else { 3154 showWithActionPopup(); 3155 } 3156 } 3157 } 3158 hideAfterDelay(); 3159 break; 3160 3161 case MotionEvent.ACTION_CANCEL: 3162 hideAfterDelay(); 3163 break; 3164 3165 default: 3166 break; 3167 } 3168 3169 return result; 3170 } 3171 3172 @Override 3173 public int getCurrentCursorOffset() { 3174 return mTextView.getSelectionStart(); 3175 } 3176 3177 @Override 3178 public void updateSelection(int offset) { 3179 Selection.setSelection((Spannable) mTextView.getText(), offset); 3180 } 3181 3182 @Override 3183 public void updatePosition(float x, float y) { 3184 positionAtCursorOffset(mTextView.getOffsetForPosition(x, y), false); 3185 } 3186 3187 @Override 3188 void onHandleMoved() { 3189 super.onHandleMoved(); 3190 removeHiderCallback(); 3191 } 3192 3193 @Override 3194 public void onDetached() { 3195 super.onDetached(); 3196 removeHiderCallback(); 3197 } 3198 } 3199 3200 private class SelectionStartHandleView extends HandleView { 3201 3202 public SelectionStartHandleView(Drawable drawableLtr, Drawable drawableRtl) { 3203 super(drawableLtr, drawableRtl); 3204 } 3205 3206 @Override 3207 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3208 if (isRtlRun) { 3209 return drawable.getIntrinsicWidth() / 4; 3210 } else { 3211 return (drawable.getIntrinsicWidth() * 3) / 4; 3212 } 3213 } 3214 3215 @Override 3216 public int getCurrentCursorOffset() { 3217 return mTextView.getSelectionStart(); 3218 } 3219 3220 @Override 3221 public void updateSelection(int offset) { 3222 Selection.setSelection((Spannable) mTextView.getText(), offset, 3223 mTextView.getSelectionEnd()); 3224 updateDrawable(); 3225 } 3226 3227 @Override 3228 public void updatePosition(float x, float y) { 3229 int offset = mTextView.getOffsetForPosition(x, y); 3230 3231 // Handles can not cross and selection is at least one character 3232 final int selectionEnd = mTextView.getSelectionEnd(); 3233 if (offset >= selectionEnd) offset = Math.max(0, selectionEnd - 1); 3234 3235 positionAtCursorOffset(offset, false); 3236 } 3237 3238 public ActionPopupWindow getActionPopupWindow() { 3239 return mActionPopupWindow; 3240 } 3241 } 3242 3243 private class SelectionEndHandleView extends HandleView { 3244 3245 public SelectionEndHandleView(Drawable drawableLtr, Drawable drawableRtl) { 3246 super(drawableLtr, drawableRtl); 3247 } 3248 3249 @Override 3250 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3251 if (isRtlRun) { 3252 return (drawable.getIntrinsicWidth() * 3) / 4; 3253 } else { 3254 return drawable.getIntrinsicWidth() / 4; 3255 } 3256 } 3257 3258 @Override 3259 public int getCurrentCursorOffset() { 3260 return mTextView.getSelectionEnd(); 3261 } 3262 3263 @Override 3264 public void updateSelection(int offset) { 3265 Selection.setSelection((Spannable) mTextView.getText(), 3266 mTextView.getSelectionStart(), offset); 3267 updateDrawable(); 3268 } 3269 3270 @Override 3271 public void updatePosition(float x, float y) { 3272 int offset = mTextView.getOffsetForPosition(x, y); 3273 3274 // Handles can not cross and selection is at least one character 3275 final int selectionStart = mTextView.getSelectionStart(); 3276 if (offset <= selectionStart) { 3277 offset = Math.min(selectionStart + 1, mTextView.getText().length()); 3278 } 3279 3280 positionAtCursorOffset(offset, false); 3281 } 3282 3283 public void setActionPopupWindow(ActionPopupWindow actionPopupWindow) { 3284 mActionPopupWindow = actionPopupWindow; 3285 } 3286 } 3287 3288 /** 3289 * A CursorController instance can be used to control a cursor in the text. 3290 */ 3291 private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { 3292 /** 3293 * Makes the cursor controller visible on screen. 3294 * See also {@link #hide()}. 3295 */ 3296 public void show(); 3297 3298 /** 3299 * Hide the cursor controller from screen. 3300 * See also {@link #show()}. 3301 */ 3302 public void hide(); 3303 3304 /** 3305 * Called when the view is detached from window. Perform house keeping task, such as 3306 * stopping Runnable thread that would otherwise keep a reference on the context, thus 3307 * preventing the activity from being recycled. 3308 */ 3309 public void onDetached(); 3310 } 3311 3312 private class InsertionPointCursorController implements CursorController { 3313 private InsertionHandleView mHandle; 3314 3315 public void show() { 3316 getHandle().show(); 3317 } 3318 3319 public void showWithActionPopup() { 3320 getHandle().showWithActionPopup(); 3321 } 3322 3323 public void hide() { 3324 if (mHandle != null) { 3325 mHandle.hide(); 3326 } 3327 } 3328 3329 public void onTouchModeChanged(boolean isInTouchMode) { 3330 if (!isInTouchMode) { 3331 hide(); 3332 } 3333 } 3334 3335 private InsertionHandleView getHandle() { 3336 if (mSelectHandleCenter == null) { 3337 mSelectHandleCenter = mTextView.getResources().getDrawable( 3338 mTextView.mTextSelectHandleRes); 3339 } 3340 if (mHandle == null) { 3341 mHandle = new InsertionHandleView(mSelectHandleCenter); 3342 } 3343 return mHandle; 3344 } 3345 3346 @Override 3347 public void onDetached() { 3348 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 3349 observer.removeOnTouchModeChangeListener(this); 3350 3351 if (mHandle != null) mHandle.onDetached(); 3352 } 3353 } 3354 3355 class SelectionModifierCursorController implements CursorController { 3356 private static final int DELAY_BEFORE_REPLACE_ACTION = 200; // milliseconds 3357 // The cursor controller handles, lazily created when shown. 3358 private SelectionStartHandleView mStartHandle; 3359 private SelectionEndHandleView mEndHandle; 3360 // The offsets of that last touch down event. Remembered to start selection there. 3361 private int mMinTouchOffset, mMaxTouchOffset; 3362 3363 // Double tap detection 3364 private long mPreviousTapUpTime = 0; 3365 private float mDownPositionX, mDownPositionY; 3366 private boolean mGestureStayedInTapRegion; 3367 3368 SelectionModifierCursorController() { 3369 resetTouchOffsets(); 3370 } 3371 3372 public void show() { 3373 if (mTextView.isInBatchEditMode()) { 3374 return; 3375 } 3376 initDrawables(); 3377 initHandles(); 3378 hideInsertionPointCursorController(); 3379 } 3380 3381 private void initDrawables() { 3382 if (mSelectHandleLeft == null) { 3383 mSelectHandleLeft = mTextView.getContext().getResources().getDrawable( 3384 mTextView.mTextSelectHandleLeftRes); 3385 } 3386 if (mSelectHandleRight == null) { 3387 mSelectHandleRight = mTextView.getContext().getResources().getDrawable( 3388 mTextView.mTextSelectHandleRightRes); 3389 } 3390 } 3391 3392 private void initHandles() { 3393 // Lazy object creation has to be done before updatePosition() is called. 3394 if (mStartHandle == null) { 3395 mStartHandle = new SelectionStartHandleView(mSelectHandleLeft, mSelectHandleRight); 3396 } 3397 if (mEndHandle == null) { 3398 mEndHandle = new SelectionEndHandleView(mSelectHandleRight, mSelectHandleLeft); 3399 } 3400 3401 mStartHandle.show(); 3402 mEndHandle.show(); 3403 3404 // Make sure both left and right handles share the same ActionPopupWindow (so that 3405 // moving any of the handles hides the action popup). 3406 mStartHandle.showActionPopupWindow(DELAY_BEFORE_REPLACE_ACTION); 3407 mEndHandle.setActionPopupWindow(mStartHandle.getActionPopupWindow()); 3408 3409 hideInsertionPointCursorController(); 3410 } 3411 3412 public void hide() { 3413 if (mStartHandle != null) mStartHandle.hide(); 3414 if (mEndHandle != null) mEndHandle.hide(); 3415 } 3416 3417 public void onTouchEvent(MotionEvent event) { 3418 // This is done even when the View does not have focus, so that long presses can start 3419 // selection and tap can move cursor from this tap position. 3420 switch (event.getActionMasked()) { 3421 case MotionEvent.ACTION_DOWN: 3422 final float x = event.getX(); 3423 final float y = event.getY(); 3424 3425 // Remember finger down position, to be able to start selection from there 3426 mMinTouchOffset = mMaxTouchOffset = mTextView.getOffsetForPosition(x, y); 3427 3428 // Double tap detection 3429 if (mGestureStayedInTapRegion) { 3430 long duration = SystemClock.uptimeMillis() - mPreviousTapUpTime; 3431 if (duration <= ViewConfiguration.getDoubleTapTimeout()) { 3432 final float deltaX = x - mDownPositionX; 3433 final float deltaY = y - mDownPositionY; 3434 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3435 3436 ViewConfiguration viewConfiguration = ViewConfiguration.get( 3437 mTextView.getContext()); 3438 int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop(); 3439 boolean stayedInArea = distanceSquared < doubleTapSlop * doubleTapSlop; 3440 3441 if (stayedInArea && isPositionOnText(x, y)) { 3442 startSelectionActionMode(); 3443 mDiscardNextActionUp = true; 3444 } 3445 } 3446 } 3447 3448 mDownPositionX = x; 3449 mDownPositionY = y; 3450 mGestureStayedInTapRegion = true; 3451 break; 3452 3453 case MotionEvent.ACTION_POINTER_DOWN: 3454 case MotionEvent.ACTION_POINTER_UP: 3455 // Handle multi-point gestures. Keep min and max offset positions. 3456 // Only activated for devices that correctly handle multi-touch. 3457 if (mTextView.getContext().getPackageManager().hasSystemFeature( 3458 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { 3459 updateMinAndMaxOffsets(event); 3460 } 3461 break; 3462 3463 case MotionEvent.ACTION_MOVE: 3464 if (mGestureStayedInTapRegion) { 3465 final float deltaX = event.getX() - mDownPositionX; 3466 final float deltaY = event.getY() - mDownPositionY; 3467 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3468 3469 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 3470 mTextView.getContext()); 3471 int doubleTapTouchSlop = viewConfiguration.getScaledDoubleTapTouchSlop(); 3472 3473 if (distanceSquared > doubleTapTouchSlop * doubleTapTouchSlop) { 3474 mGestureStayedInTapRegion = false; 3475 } 3476 } 3477 break; 3478 3479 case MotionEvent.ACTION_UP: 3480 mPreviousTapUpTime = SystemClock.uptimeMillis(); 3481 break; 3482 } 3483 } 3484 3485 /** 3486 * @param event 3487 */ 3488 private void updateMinAndMaxOffsets(MotionEvent event) { 3489 int pointerCount = event.getPointerCount(); 3490 for (int index = 0; index < pointerCount; index++) { 3491 int offset = mTextView.getOffsetForPosition(event.getX(index), event.getY(index)); 3492 if (offset < mMinTouchOffset) mMinTouchOffset = offset; 3493 if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; 3494 } 3495 } 3496 3497 public int getMinTouchOffset() { 3498 return mMinTouchOffset; 3499 } 3500 3501 public int getMaxTouchOffset() { 3502 return mMaxTouchOffset; 3503 } 3504 3505 public void resetTouchOffsets() { 3506 mMinTouchOffset = mMaxTouchOffset = -1; 3507 } 3508 3509 /** 3510 * @return true iff this controller is currently used to move the selection start. 3511 */ 3512 public boolean isSelectionStartDragged() { 3513 return mStartHandle != null && mStartHandle.isDragging(); 3514 } 3515 3516 public void onTouchModeChanged(boolean isInTouchMode) { 3517 if (!isInTouchMode) { 3518 hide(); 3519 } 3520 } 3521 3522 @Override 3523 public void onDetached() { 3524 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 3525 observer.removeOnTouchModeChangeListener(this); 3526 3527 if (mStartHandle != null) mStartHandle.onDetached(); 3528 if (mEndHandle != null) mEndHandle.onDetached(); 3529 } 3530 } 3531 3532 private class CorrectionHighlighter { 3533 private final Path mPath = new Path(); 3534 private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 3535 private int mStart, mEnd; 3536 private long mFadingStartTime; 3537 private RectF mTempRectF; 3538 private final static int FADE_OUT_DURATION = 400; 3539 3540 public CorrectionHighlighter() { 3541 mPaint.setCompatibilityScaling(mTextView.getResources().getCompatibilityInfo(). 3542 applicationScale); 3543 mPaint.setStyle(Paint.Style.FILL); 3544 } 3545 3546 public void highlight(CorrectionInfo info) { 3547 mStart = info.getOffset(); 3548 mEnd = mStart + info.getNewText().length(); 3549 mFadingStartTime = SystemClock.uptimeMillis(); 3550 3551 if (mStart < 0 || mEnd < 0) { 3552 stopAnimation(); 3553 } 3554 } 3555 3556 public void draw(Canvas canvas, int cursorOffsetVertical) { 3557 if (updatePath() && updatePaint()) { 3558 if (cursorOffsetVertical != 0) { 3559 canvas.translate(0, cursorOffsetVertical); 3560 } 3561 3562 canvas.drawPath(mPath, mPaint); 3563 3564 if (cursorOffsetVertical != 0) { 3565 canvas.translate(0, -cursorOffsetVertical); 3566 } 3567 invalidate(true); // TODO invalidate cursor region only 3568 } else { 3569 stopAnimation(); 3570 invalidate(false); // TODO invalidate cursor region only 3571 } 3572 } 3573 3574 private boolean updatePaint() { 3575 final long duration = SystemClock.uptimeMillis() - mFadingStartTime; 3576 if (duration > FADE_OUT_DURATION) return false; 3577 3578 final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; 3579 final int highlightColorAlpha = Color.alpha(mTextView.mHighlightColor); 3580 final int color = (mTextView.mHighlightColor & 0x00FFFFFF) + 3581 ((int) (highlightColorAlpha * coef) << 24); 3582 mPaint.setColor(color); 3583 return true; 3584 } 3585 3586 private boolean updatePath() { 3587 final Layout layout = mTextView.getLayout(); 3588 if (layout == null) return false; 3589 3590 // Update in case text is edited while the animation is run 3591 final int length = mTextView.getText().length(); 3592 int start = Math.min(length, mStart); 3593 int end = Math.min(length, mEnd); 3594 3595 mPath.reset(); 3596 layout.getSelectionPath(start, end, mPath); 3597 return true; 3598 } 3599 3600 private void invalidate(boolean delayed) { 3601 if (mTextView.getLayout() == null) return; 3602 3603 if (mTempRectF == null) mTempRectF = new RectF(); 3604 mPath.computeBounds(mTempRectF, false); 3605 3606 int left = mTextView.getCompoundPaddingLeft(); 3607 int top = mTextView.getExtendedPaddingTop() + mTextView.getVerticalOffset(true); 3608 3609 if (delayed) { 3610 mTextView.postInvalidateOnAnimation( 3611 left + (int) mTempRectF.left, top + (int) mTempRectF.top, 3612 left + (int) mTempRectF.right, top + (int) mTempRectF.bottom); 3613 } else { 3614 mTextView.postInvalidate((int) mTempRectF.left, (int) mTempRectF.top, 3615 (int) mTempRectF.right, (int) mTempRectF.bottom); 3616 } 3617 } 3618 3619 private void stopAnimation() { 3620 Editor.this.mCorrectionHighlighter = null; 3621 } 3622 } 3623 3624 private static class ErrorPopup extends PopupWindow { 3625 private boolean mAbove = false; 3626 private final TextView mView; 3627 private int mPopupInlineErrorBackgroundId = 0; 3628 private int mPopupInlineErrorAboveBackgroundId = 0; 3629 3630 ErrorPopup(TextView v, int width, int height) { 3631 super(v, width, height); 3632 mView = v; 3633 // Make sure the TextView has a background set as it will be used the first time it is 3634 // shown and positionned. Initialized with below background, which should have 3635 // dimensions identical to the above version for this to work (and is more likely). 3636 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 3637 com.android.internal.R.styleable.Theme_errorMessageBackground); 3638 mView.setBackgroundResource(mPopupInlineErrorBackgroundId); 3639 } 3640 3641 void fixDirection(boolean above) { 3642 mAbove = above; 3643 3644 if (above) { 3645 mPopupInlineErrorAboveBackgroundId = 3646 getResourceId(mPopupInlineErrorAboveBackgroundId, 3647 com.android.internal.R.styleable.Theme_errorMessageAboveBackground); 3648 } else { 3649 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 3650 com.android.internal.R.styleable.Theme_errorMessageBackground); 3651 } 3652 3653 mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId : 3654 mPopupInlineErrorBackgroundId); 3655 } 3656 3657 private int getResourceId(int currentId, int index) { 3658 if (currentId == 0) { 3659 TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( 3660 R.styleable.Theme); 3661 currentId = styledAttributes.getResourceId(index, 0); 3662 styledAttributes.recycle(); 3663 } 3664 return currentId; 3665 } 3666 3667 @Override 3668 public void update(int x, int y, int w, int h, boolean force) { 3669 super.update(x, y, w, h, force); 3670 3671 boolean above = isAboveAnchor(); 3672 if (above != mAbove) { 3673 fixDirection(above); 3674 } 3675 } 3676 } 3677 3678 static class InputContentType { 3679 int imeOptions = EditorInfo.IME_NULL; 3680 String privateImeOptions; 3681 CharSequence imeActionLabel; 3682 int imeActionId; 3683 Bundle extras; 3684 OnEditorActionListener onEditorActionListener; 3685 boolean enterDown; 3686 } 3687 3688 static class InputMethodState { 3689 Rect mCursorRectInWindow = new Rect(); 3690 RectF mTmpRectF = new RectF(); 3691 float[] mTmpOffset = new float[2]; 3692 ExtractedTextRequest mExtractedTextRequest; 3693 final ExtractedText mExtractedText = new ExtractedText(); 3694 int mBatchEditNesting; 3695 boolean mCursorChanged; 3696 boolean mSelectionModeChanged; 3697 boolean mContentChanged; 3698 int mChangedStart, mChangedEnd, mChangedDelta; 3699 } 3700} 3701