Editor.java revision df7c72f68c2fe32546aa119e98be9acf8fffd66d
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 com.android.internal.util.ArrayUtils; 20import com.android.internal.widget.EditableInputConnection; 21 22import android.R; 23import android.app.PendingIntent; 24import android.app.PendingIntent.CanceledException; 25import android.content.ClipData; 26import android.content.ClipData.Item; 27import android.content.Context; 28import android.content.Intent; 29import android.content.pm.PackageManager; 30import android.content.res.TypedArray; 31import android.graphics.Canvas; 32import android.graphics.Color; 33import android.graphics.Paint; 34import android.graphics.Path; 35import android.graphics.Rect; 36import android.graphics.RectF; 37import android.graphics.drawable.Drawable; 38import android.inputmethodservice.ExtractEditText; 39import android.os.Bundle; 40import android.os.Handler; 41import android.os.Message; 42import android.os.Messenger; 43import android.os.SystemClock; 44import android.provider.Settings; 45import android.text.DynamicLayout; 46import android.text.Editable; 47import android.text.InputType; 48import android.text.Layout; 49import android.text.ParcelableSpan; 50import android.text.Selection; 51import android.text.SpanWatcher; 52import android.text.Spannable; 53import android.text.SpannableStringBuilder; 54import android.text.Spanned; 55import android.text.StaticLayout; 56import android.text.TextUtils; 57import android.text.method.KeyListener; 58import android.text.method.MetaKeyKeyListener; 59import android.text.method.MovementMethod; 60import android.text.method.PasswordTransformationMethod; 61import android.text.method.WordIterator; 62import android.text.style.EasyEditSpan; 63import android.text.style.SuggestionRangeSpan; 64import android.text.style.SuggestionSpan; 65import android.text.style.TextAppearanceSpan; 66import android.text.style.URLSpan; 67import android.util.DisplayMetrics; 68import android.util.Log; 69import android.view.ActionMode; 70import android.view.ActionMode.Callback; 71import android.view.DisplayList; 72import android.view.DragEvent; 73import android.view.Gravity; 74import android.view.HardwareCanvas; 75import android.view.LayoutInflater; 76import android.view.Menu; 77import android.view.MenuItem; 78import android.view.MotionEvent; 79import android.view.View; 80import android.view.View.DragShadowBuilder; 81import android.view.View.OnClickListener; 82import android.view.ViewConfiguration; 83import android.view.ViewGroup; 84import android.view.ViewGroup.LayoutParams; 85import android.view.ViewParent; 86import android.view.ViewTreeObserver; 87import android.view.WindowManager; 88import android.view.inputmethod.CorrectionInfo; 89import android.view.inputmethod.EditorInfo; 90import android.view.inputmethod.ExtractedText; 91import android.view.inputmethod.ExtractedTextRequest; 92import android.view.inputmethod.InputConnection; 93import android.view.inputmethod.InputMethodManager; 94import android.widget.AdapterView.OnItemClickListener; 95import android.widget.TextView.Drawables; 96import android.widget.TextView.OnEditorActionListener; 97 98import java.text.BreakIterator; 99import java.util.Arrays; 100import java.util.Comparator; 101import java.util.HashMap; 102 103/** 104 * Helper class used by TextView to handle editable text views. 105 * 106 * @hide 107 */ 108public class Editor { 109 private static final String TAG = "Editor"; 110 111 static final int BLINK = 500; 112 private static final float[] TEMP_POSITION = new float[2]; 113 private static int DRAG_SHADOW_MAX_TEXT_LENGTH = 20; 114 115 // Cursor Controllers. 116 InsertionPointCursorController mInsertionPointCursorController; 117 SelectionModifierCursorController mSelectionModifierCursorController; 118 ActionMode mSelectionActionMode; 119 boolean mInsertionControllerEnabled; 120 boolean mSelectionControllerEnabled; 121 122 // Used to highlight a word when it is corrected by the IME 123 CorrectionHighlighter mCorrectionHighlighter; 124 125 InputContentType mInputContentType; 126 InputMethodState mInputMethodState; 127 128 DisplayList[] mTextDisplayLists; 129 130 boolean mFrozenWithFocus; 131 boolean mSelectionMoved; 132 boolean mTouchFocusSelected; 133 134 KeyListener mKeyListener; 135 int mInputType = EditorInfo.TYPE_NULL; 136 137 boolean mDiscardNextActionUp; 138 boolean mIgnoreActionUpEvent; 139 140 long mShowCursor; 141 Blink mBlink; 142 143 boolean mCursorVisible = true; 144 boolean mSelectAllOnFocus; 145 boolean mTextIsSelectable; 146 147 CharSequence mError; 148 boolean mErrorWasChanged; 149 ErrorPopup mErrorPopup; 150 151 /** 152 * This flag is set if the TextView tries to display an error before it 153 * is attached to the window (so its position is still unknown). 154 * It causes the error to be shown later, when onAttachedToWindow() 155 * is called. 156 */ 157 boolean mShowErrorAfterAttach; 158 159 boolean mInBatchEditControllers; 160 boolean mShowSoftInputOnFocus = true; 161 boolean mPreserveDetachedSelection; 162 boolean mTemporaryDetach; 163 164 SuggestionsPopupWindow mSuggestionsPopupWindow; 165 SuggestionRangeSpan mSuggestionRangeSpan; 166 Runnable mShowSuggestionRunnable; 167 168 final Drawable[] mCursorDrawable = new Drawable[2]; 169 int mCursorCount; // Current number of used mCursorDrawable: 0 (resource=0), 1 or 2 (split) 170 171 private Drawable mSelectHandleLeft; 172 private Drawable mSelectHandleRight; 173 private Drawable mSelectHandleCenter; 174 175 // Global listener that detects changes in the global position of the TextView 176 private PositionListener mPositionListener; 177 178 float mLastDownPositionX, mLastDownPositionY; 179 Callback mCustomSelectionActionModeCallback; 180 181 // Set when this TextView gained focus with some text selected. Will start selection mode. 182 boolean mCreatedWithASelection; 183 184 private EasyEditSpanController mEasyEditSpanController; 185 186 WordIterator mWordIterator; 187 SpellChecker mSpellChecker; 188 189 private Rect mTempRect; 190 191 private TextView mTextView; 192 193 private final UserDictionaryListener mUserDictionaryListener = new UserDictionaryListener(); 194 195 Editor(TextView textView) { 196 mTextView = textView; 197 } 198 199 void onAttachedToWindow() { 200 if (mShowErrorAfterAttach) { 201 showError(); 202 mShowErrorAfterAttach = false; 203 } 204 mTemporaryDetach = false; 205 206 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 207 // No need to create the controller. 208 // The get method will add the listener on controller creation. 209 if (mInsertionPointCursorController != null) { 210 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 211 } 212 if (mSelectionModifierCursorController != null) { 213 mSelectionModifierCursorController.resetTouchOffsets(); 214 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 215 } 216 updateSpellCheckSpans(0, mTextView.getText().length(), 217 true /* create the spell checker if needed */); 218 219 if (mTextView.hasTransientState() && 220 mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 221 // Since transient state is reference counted make sure it stays matched 222 // with our own calls to it for managing selection. 223 // The action mode callback will set this back again when/if the action mode starts. 224 mTextView.setHasTransientState(false); 225 226 // We had an active selection from before, start the selection mode. 227 startSelectionActionMode(); 228 } 229 } 230 231 void onDetachedFromWindow() { 232 if (mError != null) { 233 hideError(); 234 } 235 236 if (mBlink != null) { 237 mBlink.removeCallbacks(mBlink); 238 } 239 240 if (mInsertionPointCursorController != null) { 241 mInsertionPointCursorController.onDetached(); 242 } 243 244 if (mSelectionModifierCursorController != null) { 245 mSelectionModifierCursorController.onDetached(); 246 } 247 248 if (mShowSuggestionRunnable != null) { 249 mTextView.removeCallbacks(mShowSuggestionRunnable); 250 } 251 252 invalidateTextDisplayList(); 253 254 if (mSpellChecker != null) { 255 mSpellChecker.closeSession(); 256 // Forces the creation of a new SpellChecker next time this window is created. 257 // Will handle the cases where the settings has been changed in the meantime. 258 mSpellChecker = null; 259 } 260 261 mPreserveDetachedSelection = true; 262 hideControllers(); 263 mPreserveDetachedSelection = false; 264 mTemporaryDetach = false; 265 } 266 267 private void showError() { 268 if (mTextView.getWindowToken() == null) { 269 mShowErrorAfterAttach = true; 270 return; 271 } 272 273 if (mErrorPopup == null) { 274 LayoutInflater inflater = LayoutInflater.from(mTextView.getContext()); 275 final TextView err = (TextView) inflater.inflate( 276 com.android.internal.R.layout.textview_hint, null); 277 278 final float scale = mTextView.getResources().getDisplayMetrics().density; 279 mErrorPopup = new ErrorPopup(err, (int)(200 * scale + 0.5f), (int)(50 * scale + 0.5f)); 280 mErrorPopup.setFocusable(false); 281 // The user is entering text, so the input method is needed. We 282 // don't want the popup to be displayed on top of it. 283 mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); 284 } 285 286 TextView tv = (TextView) mErrorPopup.getContentView(); 287 chooseSize(mErrorPopup, mError, tv); 288 tv.setText(mError); 289 290 mErrorPopup.showAsDropDown(mTextView, getErrorX(), getErrorY()); 291 mErrorPopup.fixDirection(mErrorPopup.isAboveAnchor()); 292 } 293 294 public void setError(CharSequence error, Drawable icon) { 295 mError = TextUtils.stringOrSpannedString(error); 296 mErrorWasChanged = true; 297 298 if (mError == null) { 299 setErrorIcon(null); 300 if (mErrorPopup != null) { 301 if (mErrorPopup.isShowing()) { 302 mErrorPopup.dismiss(); 303 } 304 305 mErrorPopup = null; 306 } 307 308 } else { 309 setErrorIcon(icon); 310 if (mTextView.isFocused()) { 311 showError(); 312 } 313 } 314 } 315 316 private void setErrorIcon(Drawable icon) { 317 Drawables dr = mTextView.mDrawables; 318 if (dr == null) { 319 mTextView.mDrawables = dr = new Drawables(); 320 } 321 dr.setErrorDrawable(icon, mTextView); 322 323 mTextView.resetResolvedDrawables(); 324 mTextView.invalidate(); 325 mTextView.requestLayout(); 326 } 327 328 private void hideError() { 329 if (mErrorPopup != null) { 330 if (mErrorPopup.isShowing()) { 331 mErrorPopup.dismiss(); 332 } 333 } 334 335 mShowErrorAfterAttach = false; 336 } 337 338 /** 339 * Returns the X offset to make the pointy top of the error point 340 * at the middle of the error icon. 341 */ 342 private int getErrorX() { 343 /* 344 * The "25" is the distance between the point and the right edge 345 * of the background 346 */ 347 final float scale = mTextView.getResources().getDisplayMetrics().density; 348 349 final Drawables dr = mTextView.mDrawables; 350 351 final int layoutDirection = mTextView.getLayoutDirection(); 352 int errorX; 353 int offset; 354 switch (layoutDirection) { 355 default: 356 case View.LAYOUT_DIRECTION_LTR: 357 offset = - (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f); 358 errorX = mTextView.getWidth() - mErrorPopup.getWidth() - 359 mTextView.getPaddingRight() + offset; 360 break; 361 case View.LAYOUT_DIRECTION_RTL: 362 offset = (dr != null ? dr.mDrawableSizeLeft : 0) / 2 - (int) (25 * scale + 0.5f); 363 errorX = mTextView.getPaddingLeft() + offset; 364 break; 365 } 366 return errorX; 367 } 368 369 /** 370 * Returns the Y offset to make the pointy top of the error point 371 * at the bottom of the error icon. 372 */ 373 private int getErrorY() { 374 /* 375 * Compound, not extended, because the icon is not clipped 376 * if the text height is smaller. 377 */ 378 final int compoundPaddingTop = mTextView.getCompoundPaddingTop(); 379 int vspace = mTextView.getBottom() - mTextView.getTop() - 380 mTextView.getCompoundPaddingBottom() - compoundPaddingTop; 381 382 final Drawables dr = mTextView.mDrawables; 383 384 final int layoutDirection = mTextView.getLayoutDirection(); 385 int height; 386 switch (layoutDirection) { 387 default: 388 case View.LAYOUT_DIRECTION_LTR: 389 height = (dr != null ? dr.mDrawableHeightRight : 0); 390 break; 391 case View.LAYOUT_DIRECTION_RTL: 392 height = (dr != null ? dr.mDrawableHeightLeft : 0); 393 break; 394 } 395 396 int icontop = compoundPaddingTop + (vspace - height) / 2; 397 398 /* 399 * The "2" is the distance between the point and the top edge 400 * of the background. 401 */ 402 final float scale = mTextView.getResources().getDisplayMetrics().density; 403 return icontop + height - mTextView.getHeight() - (int) (2 * scale + 0.5f); 404 } 405 406 void createInputContentTypeIfNeeded() { 407 if (mInputContentType == null) { 408 mInputContentType = new InputContentType(); 409 } 410 } 411 412 void createInputMethodStateIfNeeded() { 413 if (mInputMethodState == null) { 414 mInputMethodState = new InputMethodState(); 415 } 416 } 417 418 boolean isCursorVisible() { 419 // The default value is true, even when there is no associated Editor 420 return mCursorVisible && mTextView.isTextEditable(); 421 } 422 423 void prepareCursorControllers() { 424 boolean windowSupportsHandles = false; 425 426 ViewGroup.LayoutParams params = mTextView.getRootView().getLayoutParams(); 427 if (params instanceof WindowManager.LayoutParams) { 428 WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params; 429 windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW 430 || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW; 431 } 432 433 boolean enabled = windowSupportsHandles && mTextView.getLayout() != null; 434 mInsertionControllerEnabled = enabled && isCursorVisible(); 435 mSelectionControllerEnabled = enabled && mTextView.textCanBeSelected(); 436 437 if (!mInsertionControllerEnabled) { 438 hideInsertionPointCursorController(); 439 if (mInsertionPointCursorController != null) { 440 mInsertionPointCursorController.onDetached(); 441 mInsertionPointCursorController = null; 442 } 443 } 444 445 if (!mSelectionControllerEnabled) { 446 stopSelectionActionMode(); 447 if (mSelectionModifierCursorController != null) { 448 mSelectionModifierCursorController.onDetached(); 449 mSelectionModifierCursorController = null; 450 } 451 } 452 } 453 454 private void hideInsertionPointCursorController() { 455 if (mInsertionPointCursorController != null) { 456 mInsertionPointCursorController.hide(); 457 } 458 } 459 460 /** 461 * Hides the insertion controller and stops text selection mode, hiding the selection controller 462 */ 463 void hideControllers() { 464 hideCursorControllers(); 465 hideSpanControllers(); 466 } 467 468 private void hideSpanControllers() { 469 if (mEasyEditSpanController != null) { 470 mEasyEditSpanController.hide(); 471 } 472 } 473 474 private void hideCursorControllers() { 475 if (mSuggestionsPopupWindow != null && !mSuggestionsPopupWindow.isShowingUp()) { 476 // Should be done before hide insertion point controller since it triggers a show of it 477 mSuggestionsPopupWindow.hide(); 478 } 479 hideInsertionPointCursorController(); 480 stopSelectionActionMode(); 481 } 482 483 /** 484 * Create new SpellCheckSpans on the modified region. 485 */ 486 private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) { 487 if (mTextView.isTextEditable() && mTextView.isSuggestionsEnabled() && 488 !(mTextView instanceof ExtractEditText)) { 489 if (mSpellChecker == null && createSpellChecker) { 490 mSpellChecker = new SpellChecker(mTextView); 491 } 492 if (mSpellChecker != null) { 493 mSpellChecker.spellCheck(start, end); 494 } 495 } 496 } 497 498 void onScreenStateChanged(int screenState) { 499 switch (screenState) { 500 case View.SCREEN_STATE_ON: 501 resumeBlink(); 502 break; 503 case View.SCREEN_STATE_OFF: 504 suspendBlink(); 505 break; 506 } 507 } 508 509 private void suspendBlink() { 510 if (mBlink != null) { 511 mBlink.cancel(); 512 } 513 } 514 515 private void resumeBlink() { 516 if (mBlink != null) { 517 mBlink.uncancel(); 518 makeBlink(); 519 } 520 } 521 522 void adjustInputType(boolean password, boolean passwordInputType, 523 boolean webPasswordInputType, boolean numberPasswordInputType) { 524 // mInputType has been set from inputType, possibly modified by mInputMethod. 525 // Specialize mInputType to [web]password if we have a text class and the original input 526 // type was a password. 527 if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 528 if (password || passwordInputType) { 529 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 530 | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD; 531 } 532 if (webPasswordInputType) { 533 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 534 | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 535 } 536 } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) { 537 if (numberPasswordInputType) { 538 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 539 | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD; 540 } 541 } 542 } 543 544 private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) { 545 int wid = tv.getPaddingLeft() + tv.getPaddingRight(); 546 int ht = tv.getPaddingTop() + tv.getPaddingBottom(); 547 548 int defaultWidthInPixels = mTextView.getResources().getDimensionPixelSize( 549 com.android.internal.R.dimen.textview_error_popup_default_width); 550 Layout l = new StaticLayout(text, tv.getPaint(), defaultWidthInPixels, 551 Layout.Alignment.ALIGN_NORMAL, 1, 0, true); 552 float max = 0; 553 for (int i = 0; i < l.getLineCount(); i++) { 554 max = Math.max(max, l.getLineWidth(i)); 555 } 556 557 /* 558 * Now set the popup size to be big enough for the text plus the border capped 559 * to DEFAULT_MAX_POPUP_WIDTH 560 */ 561 pop.setWidth(wid + (int) Math.ceil(max)); 562 pop.setHeight(ht + l.getHeight()); 563 } 564 565 void setFrame() { 566 if (mErrorPopup != null) { 567 TextView tv = (TextView) mErrorPopup.getContentView(); 568 chooseSize(mErrorPopup, mError, tv); 569 mErrorPopup.update(mTextView, getErrorX(), getErrorY(), 570 mErrorPopup.getWidth(), mErrorPopup.getHeight()); 571 } 572 } 573 574 /** 575 * Unlike {@link TextView#textCanBeSelected()}, this method is based on the <i>current</i> state 576 * of the TextView. textCanBeSelected() has to be true (this is one of the conditions to have 577 * a selection controller (see {@link #prepareCursorControllers()}), but this is not sufficient. 578 */ 579 private boolean canSelectText() { 580 return hasSelectionController() && mTextView.getText().length() != 0; 581 } 582 583 /** 584 * It would be better to rely on the input type for everything. A password inputType should have 585 * a password transformation. We should hence use isPasswordInputType instead of this method. 586 * 587 * We should: 588 * - Call setInputType in setKeyListener instead of changing the input type directly (which 589 * would install the correct transformation). 590 * - Refuse the installation of a non-password transformation in setTransformation if the input 591 * type is password. 592 * 593 * However, this is like this for legacy reasons and we cannot break existing apps. This method 594 * is useful since it matches what the user can see (obfuscated text or not). 595 * 596 * @return true if the current transformation method is of the password type. 597 */ 598 private boolean hasPasswordTransformationMethod() { 599 return mTextView.getTransformationMethod() instanceof PasswordTransformationMethod; 600 } 601 602 /** 603 * Adjusts selection to the word under last touch offset. 604 * Return true if the operation was successfully performed. 605 */ 606 private boolean selectCurrentWord() { 607 if (!canSelectText()) { 608 return false; 609 } 610 611 if (hasPasswordTransformationMethod()) { 612 // Always select all on a password field. 613 // Cut/copy menu entries are not available for passwords, but being able to select all 614 // is however useful to delete or paste to replace the entire content. 615 return mTextView.selectAllText(); 616 } 617 618 int inputType = mTextView.getInputType(); 619 int klass = inputType & InputType.TYPE_MASK_CLASS; 620 int variation = inputType & InputType.TYPE_MASK_VARIATION; 621 622 // Specific text field types: select the entire text for these 623 if (klass == InputType.TYPE_CLASS_NUMBER || 624 klass == InputType.TYPE_CLASS_PHONE || 625 klass == InputType.TYPE_CLASS_DATETIME || 626 variation == InputType.TYPE_TEXT_VARIATION_URI || 627 variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS || 628 variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS || 629 variation == InputType.TYPE_TEXT_VARIATION_FILTER) { 630 return mTextView.selectAllText(); 631 } 632 633 long lastTouchOffsets = getLastTouchOffsets(); 634 final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 635 final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 636 637 // Safety check in case standard touch event handling has been bypassed 638 if (minOffset < 0 || minOffset >= mTextView.getText().length()) return false; 639 if (maxOffset < 0 || maxOffset >= mTextView.getText().length()) return false; 640 641 int selectionStart, selectionEnd; 642 643 // If a URLSpan (web address, email, phone...) is found at that position, select it. 644 URLSpan[] urlSpans = ((Spanned) mTextView.getText()). 645 getSpans(minOffset, maxOffset, URLSpan.class); 646 if (urlSpans.length >= 1) { 647 URLSpan urlSpan = urlSpans[0]; 648 selectionStart = ((Spanned) mTextView.getText()).getSpanStart(urlSpan); 649 selectionEnd = ((Spanned) mTextView.getText()).getSpanEnd(urlSpan); 650 } else { 651 final WordIterator wordIterator = getWordIterator(); 652 wordIterator.setCharSequence(mTextView.getText(), minOffset, maxOffset); 653 654 selectionStart = wordIterator.getBeginning(minOffset); 655 selectionEnd = wordIterator.getEnd(maxOffset); 656 657 if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE || 658 selectionStart == selectionEnd) { 659 // Possible when the word iterator does not properly handle the text's language 660 long range = getCharRange(minOffset); 661 selectionStart = TextUtils.unpackRangeStartFromLong(range); 662 selectionEnd = TextUtils.unpackRangeEndFromLong(range); 663 } 664 } 665 666 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 667 return selectionEnd > selectionStart; 668 } 669 670 void onLocaleChanged() { 671 // Will be re-created on demand in getWordIterator with the proper new locale 672 mWordIterator = null; 673 } 674 675 /** 676 * @hide 677 */ 678 public WordIterator getWordIterator() { 679 if (mWordIterator == null) { 680 mWordIterator = new WordIterator(mTextView.getTextServicesLocale()); 681 } 682 return mWordIterator; 683 } 684 685 private long getCharRange(int offset) { 686 final int textLength = mTextView.getText().length(); 687 if (offset + 1 < textLength) { 688 final char currentChar = mTextView.getText().charAt(offset); 689 final char nextChar = mTextView.getText().charAt(offset + 1); 690 if (Character.isSurrogatePair(currentChar, nextChar)) { 691 return TextUtils.packRangeInLong(offset, offset + 2); 692 } 693 } 694 if (offset < textLength) { 695 return TextUtils.packRangeInLong(offset, offset + 1); 696 } 697 if (offset - 2 >= 0) { 698 final char previousChar = mTextView.getText().charAt(offset - 1); 699 final char previousPreviousChar = mTextView.getText().charAt(offset - 2); 700 if (Character.isSurrogatePair(previousPreviousChar, previousChar)) { 701 return TextUtils.packRangeInLong(offset - 2, offset); 702 } 703 } 704 if (offset - 1 >= 0) { 705 return TextUtils.packRangeInLong(offset - 1, offset); 706 } 707 return TextUtils.packRangeInLong(offset, offset); 708 } 709 710 private boolean touchPositionIsInSelection() { 711 int selectionStart = mTextView.getSelectionStart(); 712 int selectionEnd = mTextView.getSelectionEnd(); 713 714 if (selectionStart == selectionEnd) { 715 return false; 716 } 717 718 if (selectionStart > selectionEnd) { 719 int tmp = selectionStart; 720 selectionStart = selectionEnd; 721 selectionEnd = tmp; 722 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 723 } 724 725 SelectionModifierCursorController selectionController = getSelectionController(); 726 int minOffset = selectionController.getMinTouchOffset(); 727 int maxOffset = selectionController.getMaxTouchOffset(); 728 729 return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); 730 } 731 732 private PositionListener getPositionListener() { 733 if (mPositionListener == null) { 734 mPositionListener = new PositionListener(); 735 } 736 return mPositionListener; 737 } 738 739 private interface TextViewPositionListener { 740 public void updatePosition(int parentPositionX, int parentPositionY, 741 boolean parentPositionChanged, boolean parentScrolled); 742 } 743 744 private boolean isPositionVisible(int positionX, int positionY) { 745 synchronized (TEMP_POSITION) { 746 final float[] position = TEMP_POSITION; 747 position[0] = positionX; 748 position[1] = positionY; 749 View view = mTextView; 750 751 while (view != null) { 752 if (view != mTextView) { 753 // Local scroll is already taken into account in positionX/Y 754 position[0] -= view.getScrollX(); 755 position[1] -= view.getScrollY(); 756 } 757 758 if (position[0] < 0 || position[1] < 0 || 759 position[0] > view.getWidth() || position[1] > view.getHeight()) { 760 return false; 761 } 762 763 if (!view.getMatrix().isIdentity()) { 764 view.getMatrix().mapPoints(position); 765 } 766 767 position[0] += view.getLeft(); 768 position[1] += view.getTop(); 769 770 final ViewParent parent = view.getParent(); 771 if (parent instanceof View) { 772 view = (View) parent; 773 } else { 774 // We've reached the ViewRoot, stop iterating 775 view = null; 776 } 777 } 778 } 779 780 // We've been able to walk up the view hierarchy and the position was never clipped 781 return true; 782 } 783 784 private boolean isOffsetVisible(int offset) { 785 Layout layout = mTextView.getLayout(); 786 final int line = layout.getLineForOffset(offset); 787 final int lineBottom = layout.getLineBottom(line); 788 final int primaryHorizontal = (int) layout.getPrimaryHorizontal(offset); 789 return isPositionVisible(primaryHorizontal + mTextView.viewportToContentHorizontalOffset(), 790 lineBottom + mTextView.viewportToContentVerticalOffset()); 791 } 792 793 /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed 794 * in the view. Returns false when the position is in the empty space of left/right of text. 795 */ 796 private boolean isPositionOnText(float x, float y) { 797 Layout layout = mTextView.getLayout(); 798 if (layout == null) return false; 799 800 final int line = mTextView.getLineAtCoordinate(y); 801 x = mTextView.convertToLocalHorizontalCoordinate(x); 802 803 if (x < layout.getLineLeft(line)) return false; 804 if (x > layout.getLineRight(line)) return false; 805 return true; 806 } 807 808 public boolean performLongClick(boolean handled) { 809 // Long press in empty space moves cursor and shows the Paste affordance if available. 810 if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) && 811 mInsertionControllerEnabled) { 812 final int offset = mTextView.getOffsetForPosition(mLastDownPositionX, 813 mLastDownPositionY); 814 stopSelectionActionMode(); 815 Selection.setSelection((Spannable) mTextView.getText(), offset); 816 getInsertionController().showWithActionPopup(); 817 handled = true; 818 } 819 820 if (!handled && mSelectionActionMode != null) { 821 if (touchPositionIsInSelection()) { 822 // Start a drag 823 final int start = mTextView.getSelectionStart(); 824 final int end = mTextView.getSelectionEnd(); 825 CharSequence selectedText = mTextView.getTransformedText(start, end); 826 ClipData data = ClipData.newPlainText(null, selectedText); 827 DragLocalState localState = new DragLocalState(mTextView, start, end); 828 mTextView.startDrag(data, getTextThumbnailBuilder(selectedText), localState, 0); 829 stopSelectionActionMode(); 830 } else { 831 getSelectionController().hide(); 832 selectCurrentWord(); 833 getSelectionController().show(); 834 } 835 handled = true; 836 } 837 838 // Start a new selection 839 if (!handled) { 840 handled = startSelectionActionMode(); 841 } 842 843 return handled; 844 } 845 846 private long getLastTouchOffsets() { 847 SelectionModifierCursorController selectionController = getSelectionController(); 848 final int minOffset = selectionController.getMinTouchOffset(); 849 final int maxOffset = selectionController.getMaxTouchOffset(); 850 return TextUtils.packRangeInLong(minOffset, maxOffset); 851 } 852 853 void onFocusChanged(boolean focused, int direction) { 854 mShowCursor = SystemClock.uptimeMillis(); 855 ensureEndedBatchEdit(); 856 857 if (focused) { 858 int selStart = mTextView.getSelectionStart(); 859 int selEnd = mTextView.getSelectionEnd(); 860 861 // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection 862 // mode for these, unless there was a specific selection already started. 863 final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 && 864 selEnd == mTextView.getText().length(); 865 866 mCreatedWithASelection = mFrozenWithFocus && mTextView.hasSelection() && 867 !isFocusHighlighted; 868 869 if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { 870 // If a tap was used to give focus to that view, move cursor at tap position. 871 // Has to be done before onTakeFocus, which can be overloaded. 872 final int lastTapPosition = getLastTapPosition(); 873 if (lastTapPosition >= 0) { 874 Selection.setSelection((Spannable) mTextView.getText(), lastTapPosition); 875 } 876 877 // Note this may have to be moved out of the Editor class 878 MovementMethod mMovement = mTextView.getMovementMethod(); 879 if (mMovement != null) { 880 mMovement.onTakeFocus(mTextView, (Spannable) mTextView.getText(), direction); 881 } 882 883 // The DecorView does not have focus when the 'Done' ExtractEditText button is 884 // pressed. Since it is the ViewAncestor's mView, it requests focus before 885 // ExtractEditText clears focus, which gives focus to the ExtractEditText. 886 // This special case ensure that we keep current selection in that case. 887 // It would be better to know why the DecorView does not have focus at that time. 888 if (((mTextView instanceof ExtractEditText) || mSelectionMoved) && 889 selStart >= 0 && selEnd >= 0) { 890 /* 891 * Someone intentionally set the selection, so let them 892 * do whatever it is that they wanted to do instead of 893 * the default on-focus behavior. We reset the selection 894 * here instead of just skipping the onTakeFocus() call 895 * because some movement methods do something other than 896 * just setting the selection in theirs and we still 897 * need to go through that path. 898 */ 899 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 900 } 901 902 if (mSelectAllOnFocus) { 903 mTextView.selectAllText(); 904 } 905 906 mTouchFocusSelected = true; 907 } 908 909 mFrozenWithFocus = false; 910 mSelectionMoved = false; 911 912 if (mError != null) { 913 showError(); 914 } 915 916 makeBlink(); 917 } else { 918 if (mError != null) { 919 hideError(); 920 } 921 // Don't leave us in the middle of a batch edit. 922 mTextView.onEndBatchEdit(); 923 924 if (mTextView instanceof ExtractEditText) { 925 // terminateTextSelectionMode removes selection, which we want to keep when 926 // ExtractEditText goes out of focus. 927 final int selStart = mTextView.getSelectionStart(); 928 final int selEnd = mTextView.getSelectionEnd(); 929 hideControllers(); 930 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 931 } else { 932 if (mTemporaryDetach) mPreserveDetachedSelection = true; 933 hideControllers(); 934 if (mTemporaryDetach) mPreserveDetachedSelection = false; 935 downgradeEasyCorrectionSpans(); 936 } 937 938 // No need to create the controller 939 if (mSelectionModifierCursorController != null) { 940 mSelectionModifierCursorController.resetTouchOffsets(); 941 } 942 } 943 } 944 945 /** 946 * Downgrades to simple suggestions all the easy correction spans that are not a spell check 947 * span. 948 */ 949 private void downgradeEasyCorrectionSpans() { 950 CharSequence text = mTextView.getText(); 951 if (text instanceof Spannable) { 952 Spannable spannable = (Spannable) text; 953 SuggestionSpan[] suggestionSpans = spannable.getSpans(0, 954 spannable.length(), SuggestionSpan.class); 955 for (int i = 0; i < suggestionSpans.length; i++) { 956 int flags = suggestionSpans[i].getFlags(); 957 if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0 958 && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) { 959 flags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 960 suggestionSpans[i].setFlags(flags); 961 } 962 } 963 } 964 } 965 966 void sendOnTextChanged(int start, int after) { 967 updateSpellCheckSpans(start, start + after, false); 968 969 // Hide the controllers as soon as text is modified (typing, procedural...) 970 // We do not hide the span controllers, since they can be added when a new text is 971 // inserted into the text view (voice IME). 972 hideCursorControllers(); 973 } 974 975 private int getLastTapPosition() { 976 // No need to create the controller at that point, no last tap position saved 977 if (mSelectionModifierCursorController != null) { 978 int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); 979 if (lastTapPosition >= 0) { 980 // Safety check, should not be possible. 981 if (lastTapPosition > mTextView.getText().length()) { 982 lastTapPosition = mTextView.getText().length(); 983 } 984 return lastTapPosition; 985 } 986 } 987 988 return -1; 989 } 990 991 void onWindowFocusChanged(boolean hasWindowFocus) { 992 if (hasWindowFocus) { 993 if (mBlink != null) { 994 mBlink.uncancel(); 995 makeBlink(); 996 } 997 } else { 998 if (mBlink != null) { 999 mBlink.cancel(); 1000 } 1001 if (mInputContentType != null) { 1002 mInputContentType.enterDown = false; 1003 } 1004 // Order matters! Must be done before onParentLostFocus to rely on isShowingUp 1005 hideControllers(); 1006 if (mSuggestionsPopupWindow != null) { 1007 mSuggestionsPopupWindow.onParentLostFocus(); 1008 } 1009 1010 // Don't leave us in the middle of a batch edit. Same as in onFocusChanged 1011 ensureEndedBatchEdit(); 1012 } 1013 } 1014 1015 void onTouchEvent(MotionEvent event) { 1016 if (hasSelectionController()) { 1017 getSelectionController().onTouchEvent(event); 1018 } 1019 1020 if (mShowSuggestionRunnable != null) { 1021 mTextView.removeCallbacks(mShowSuggestionRunnable); 1022 mShowSuggestionRunnable = null; 1023 } 1024 1025 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 1026 mLastDownPositionX = event.getX(); 1027 mLastDownPositionY = event.getY(); 1028 1029 // Reset this state; it will be re-set if super.onTouchEvent 1030 // causes focus to move to the view. 1031 mTouchFocusSelected = false; 1032 mIgnoreActionUpEvent = false; 1033 } 1034 } 1035 1036 public void beginBatchEdit() { 1037 mInBatchEditControllers = true; 1038 final InputMethodState ims = mInputMethodState; 1039 if (ims != null) { 1040 int nesting = ++ims.mBatchEditNesting; 1041 if (nesting == 1) { 1042 ims.mCursorChanged = false; 1043 ims.mChangedDelta = 0; 1044 if (ims.mContentChanged) { 1045 // We already have a pending change from somewhere else, 1046 // so turn this into a full update. 1047 ims.mChangedStart = 0; 1048 ims.mChangedEnd = mTextView.getText().length(); 1049 } else { 1050 ims.mChangedStart = EXTRACT_UNKNOWN; 1051 ims.mChangedEnd = EXTRACT_UNKNOWN; 1052 ims.mContentChanged = false; 1053 } 1054 mTextView.onBeginBatchEdit(); 1055 } 1056 } 1057 } 1058 1059 public void endBatchEdit() { 1060 mInBatchEditControllers = false; 1061 final InputMethodState ims = mInputMethodState; 1062 if (ims != null) { 1063 int nesting = --ims.mBatchEditNesting; 1064 if (nesting == 0) { 1065 finishBatchEdit(ims); 1066 } 1067 } 1068 } 1069 1070 void ensureEndedBatchEdit() { 1071 final InputMethodState ims = mInputMethodState; 1072 if (ims != null && ims.mBatchEditNesting != 0) { 1073 ims.mBatchEditNesting = 0; 1074 finishBatchEdit(ims); 1075 } 1076 } 1077 1078 void finishBatchEdit(final InputMethodState ims) { 1079 mTextView.onEndBatchEdit(); 1080 1081 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1082 mTextView.updateAfterEdit(); 1083 reportExtractedText(); 1084 } else if (ims.mCursorChanged) { 1085 // Cheezy way to get us to report the current cursor location. 1086 mTextView.invalidateCursor(); 1087 } 1088 } 1089 1090 static final int EXTRACT_NOTHING = -2; 1091 static final int EXTRACT_UNKNOWN = -1; 1092 1093 boolean extractText(ExtractedTextRequest request, ExtractedText outText) { 1094 return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, 1095 EXTRACT_UNKNOWN, outText); 1096 } 1097 1098 private boolean extractTextInternal(ExtractedTextRequest request, 1099 int partialStartOffset, int partialEndOffset, int delta, 1100 ExtractedText outText) { 1101 final CharSequence content = mTextView.getText(); 1102 if (content != null) { 1103 if (partialStartOffset != EXTRACT_NOTHING) { 1104 final int N = content.length(); 1105 if (partialStartOffset < 0) { 1106 outText.partialStartOffset = outText.partialEndOffset = -1; 1107 partialStartOffset = 0; 1108 partialEndOffset = N; 1109 } else { 1110 // Now use the delta to determine the actual amount of text 1111 // we need. 1112 partialEndOffset += delta; 1113 // Adjust offsets to ensure we contain full spans. 1114 if (content instanceof Spanned) { 1115 Spanned spanned = (Spanned)content; 1116 Object[] spans = spanned.getSpans(partialStartOffset, 1117 partialEndOffset, ParcelableSpan.class); 1118 int i = spans.length; 1119 while (i > 0) { 1120 i--; 1121 int j = spanned.getSpanStart(spans[i]); 1122 if (j < partialStartOffset) partialStartOffset = j; 1123 j = spanned.getSpanEnd(spans[i]); 1124 if (j > partialEndOffset) partialEndOffset = j; 1125 } 1126 } 1127 outText.partialStartOffset = partialStartOffset; 1128 outText.partialEndOffset = partialEndOffset - delta; 1129 1130 if (partialStartOffset > N) { 1131 partialStartOffset = N; 1132 } else if (partialStartOffset < 0) { 1133 partialStartOffset = 0; 1134 } 1135 if (partialEndOffset > N) { 1136 partialEndOffset = N; 1137 } else if (partialEndOffset < 0) { 1138 partialEndOffset = 0; 1139 } 1140 } 1141 if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) { 1142 outText.text = content.subSequence(partialStartOffset, 1143 partialEndOffset); 1144 } else { 1145 outText.text = TextUtils.substring(content, partialStartOffset, 1146 partialEndOffset); 1147 } 1148 } else { 1149 outText.partialStartOffset = 0; 1150 outText.partialEndOffset = 0; 1151 outText.text = ""; 1152 } 1153 outText.flags = 0; 1154 if (MetaKeyKeyListener.getMetaState(content, MetaKeyKeyListener.META_SELECTING) != 0) { 1155 outText.flags |= ExtractedText.FLAG_SELECTING; 1156 } 1157 if (mTextView.isSingleLine()) { 1158 outText.flags |= ExtractedText.FLAG_SINGLE_LINE; 1159 } 1160 outText.startOffset = 0; 1161 outText.selectionStart = mTextView.getSelectionStart(); 1162 outText.selectionEnd = mTextView.getSelectionEnd(); 1163 return true; 1164 } 1165 return false; 1166 } 1167 1168 boolean reportExtractedText() { 1169 final Editor.InputMethodState ims = mInputMethodState; 1170 if (ims != null) { 1171 final boolean contentChanged = ims.mContentChanged; 1172 if (contentChanged || ims.mSelectionModeChanged) { 1173 ims.mContentChanged = false; 1174 ims.mSelectionModeChanged = false; 1175 final ExtractedTextRequest req = ims.mExtractedTextRequest; 1176 if (req != null) { 1177 InputMethodManager imm = InputMethodManager.peekInstance(); 1178 if (imm != null) { 1179 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1180 "Retrieving extracted start=" + ims.mChangedStart + 1181 " end=" + ims.mChangedEnd + 1182 " delta=" + ims.mChangedDelta); 1183 if (ims.mChangedStart < 0 && !contentChanged) { 1184 ims.mChangedStart = EXTRACT_NOTHING; 1185 } 1186 if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, 1187 ims.mChangedDelta, ims.mExtractedText)) { 1188 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1189 "Reporting extracted start=" + 1190 ims.mExtractedText.partialStartOffset + 1191 " end=" + ims.mExtractedText.partialEndOffset + 1192 ": " + ims.mExtractedText.text); 1193 1194 imm.updateExtractedText(mTextView, req.token, ims.mExtractedText); 1195 ims.mChangedStart = EXTRACT_UNKNOWN; 1196 ims.mChangedEnd = EXTRACT_UNKNOWN; 1197 ims.mChangedDelta = 0; 1198 ims.mContentChanged = false; 1199 return true; 1200 } 1201 } 1202 } 1203 } 1204 } 1205 return false; 1206 } 1207 1208 private void sendUpdateSelection() { 1209 if (null != mInputMethodState && mInputMethodState.mBatchEditNesting <= 0) { 1210 final InputMethodManager imm = InputMethodManager.peekInstance(); 1211 if (null != imm) { 1212 final int selectionStart = mTextView.getSelectionStart(); 1213 final int selectionEnd = mTextView.getSelectionEnd(); 1214 int candStart = -1; 1215 int candEnd = -1; 1216 if (mTextView.getText() instanceof Spannable) { 1217 final Spannable sp = (Spannable) mTextView.getText(); 1218 candStart = EditableInputConnection.getComposingSpanStart(sp); 1219 candEnd = EditableInputConnection.getComposingSpanEnd(sp); 1220 } 1221 imm.updateSelection(mTextView, 1222 selectionStart, selectionEnd, candStart, candEnd); 1223 } 1224 } 1225 } 1226 1227 void onDraw(Canvas canvas, Layout layout, Path highlight, Paint highlightPaint, 1228 int cursorOffsetVertical) { 1229 final int selectionStart = mTextView.getSelectionStart(); 1230 final int selectionEnd = mTextView.getSelectionEnd(); 1231 1232 final InputMethodState ims = mInputMethodState; 1233 if (ims != null && ims.mBatchEditNesting == 0) { 1234 InputMethodManager imm = InputMethodManager.peekInstance(); 1235 if (imm != null) { 1236 if (imm.isActive(mTextView)) { 1237 boolean reported = false; 1238 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1239 // We are in extract mode and the content has changed 1240 // in some way... just report complete new text to the 1241 // input method. 1242 reported = reportExtractedText(); 1243 } 1244 if (!reported && highlight != null) { 1245 // TODO: stop doing this here, and do it after each change 1246 // as needed instead. 1247 sendUpdateSelection(); 1248 } 1249 } 1250 1251 if (imm.isWatchingCursor(mTextView) && highlight != null) { 1252 highlight.computeBounds(ims.mTmpRectF, true); 1253 ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0; 1254 1255 canvas.getMatrix().mapPoints(ims.mTmpOffset); 1256 ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]); 1257 1258 ims.mTmpRectF.offset(0, cursorOffsetVertical); 1259 1260 ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5), 1261 (int)(ims.mTmpRectF.top + 0.5), 1262 (int)(ims.mTmpRectF.right + 0.5), 1263 (int)(ims.mTmpRectF.bottom + 0.5)); 1264 1265 imm.updateCursor(mTextView, 1266 ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top, 1267 ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom); 1268 } 1269 } 1270 } 1271 1272 if (mCorrectionHighlighter != null) { 1273 mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); 1274 } 1275 1276 if (highlight != null && selectionStart == selectionEnd && mCursorCount > 0) { 1277 drawCursor(canvas, cursorOffsetVertical); 1278 // Rely on the drawable entirely, do not draw the cursor line. 1279 // Has to be done after the IMM related code above which relies on the highlight. 1280 highlight = null; 1281 } 1282 1283 if (mTextView.canHaveDisplayList() && canvas.isHardwareAccelerated()) { 1284 drawHardwareAccelerated(canvas, layout, highlight, highlightPaint, 1285 cursorOffsetVertical); 1286 } else { 1287 layout.draw(canvas, highlight, highlightPaint, cursorOffsetVertical); 1288 } 1289 } 1290 1291 private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight, 1292 Paint highlightPaint, int cursorOffsetVertical) { 1293 final long lineRange = layout.getLineRangeForDraw(canvas); 1294 int firstLine = TextUtils.unpackRangeStartFromLong(lineRange); 1295 int lastLine = TextUtils.unpackRangeEndFromLong(lineRange); 1296 if (lastLine < 0) return; 1297 1298 layout.drawBackground(canvas, highlight, highlightPaint, cursorOffsetVertical, 1299 firstLine, lastLine); 1300 1301 if (layout instanceof DynamicLayout) { 1302 if (mTextDisplayLists == null) { 1303 mTextDisplayLists = new DisplayList[ArrayUtils.idealObjectArraySize(0)]; 1304 } 1305 1306 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1307 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1308 int[] blockIndices = dynamicLayout.getBlockIndices(); 1309 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1310 final int indexFirstChangedBlock = dynamicLayout.getIndexFirstChangedBlock(); 1311 1312 int endOfPreviousBlock = -1; 1313 int searchStartIndex = 0; 1314 for (int i = 0; i < numberOfBlocks; i++) { 1315 int blockEndLine = blockEndLines[i]; 1316 int blockIndex = blockIndices[i]; 1317 1318 final boolean blockIsInvalid = blockIndex == DynamicLayout.INVALID_BLOCK_INDEX; 1319 if (blockIsInvalid) { 1320 blockIndex = getAvailableDisplayListIndex(blockIndices, numberOfBlocks, 1321 searchStartIndex); 1322 // Note how dynamic layout's internal block indices get updated from Editor 1323 blockIndices[i] = blockIndex; 1324 searchStartIndex = blockIndex + 1; 1325 } 1326 1327 DisplayList blockDisplayList = mTextDisplayLists[blockIndex]; 1328 if (blockDisplayList == null) { 1329 blockDisplayList = mTextDisplayLists[blockIndex] = 1330 mTextView.getHardwareRenderer().createDisplayList("Text " + blockIndex); 1331 } else { 1332 if (blockIsInvalid) blockDisplayList.clear(); 1333 } 1334 1335 final boolean blockDisplayListIsInvalid = !blockDisplayList.isValid(); 1336 if (i >= indexFirstChangedBlock || blockDisplayListIsInvalid) { 1337 final int blockBeginLine = endOfPreviousBlock + 1; 1338 final int top = layout.getLineTop(blockBeginLine); 1339 final int bottom = layout.getLineBottom(blockEndLine); 1340 int left = 0; 1341 int right = mTextView.getWidth(); 1342 if (mTextView.getHorizontallyScrolling()) { 1343 float min = Float.MAX_VALUE; 1344 float max = Float.MIN_VALUE; 1345 for (int line = blockBeginLine; line <= blockEndLine; line++) { 1346 min = Math.min(min, layout.getLineLeft(line)); 1347 max = Math.max(max, layout.getLineRight(line)); 1348 } 1349 left = (int) min; 1350 right = (int) (max + 0.5f); 1351 } 1352 1353 // Rebuild display list if it is invalid 1354 if (blockDisplayListIsInvalid) { 1355 final HardwareCanvas hardwareCanvas = blockDisplayList.start( 1356 right - left, bottom - top); 1357 try { 1358 // drawText is always relative to TextView's origin, this translation 1359 // brings this range of text back to the top left corner of the viewport 1360 hardwareCanvas.translate(-left, -top); 1361 layout.drawText(hardwareCanvas, blockBeginLine, blockEndLine); 1362 // No need to untranslate, previous context is popped after 1363 // drawDisplayList 1364 } finally { 1365 blockDisplayList.end(); 1366 // Same as drawDisplayList below, handled by our TextView's parent 1367 blockDisplayList.setClipChildren(false); 1368 } 1369 } 1370 1371 // Valid disply list whose index is >= indexFirstChangedBlock 1372 // only needs to update its drawing location. 1373 blockDisplayList.setLeftTopRightBottom(left, top, right, bottom); 1374 } 1375 1376 ((HardwareCanvas) canvas).drawDisplayList(blockDisplayList, null, 1377 0 /* no child clipping, our TextView parent enforces it */); 1378 1379 endOfPreviousBlock = blockEndLine; 1380 } 1381 1382 dynamicLayout.setIndexFirstChangedBlock(numberOfBlocks); 1383 } else { 1384 // Boring layout is used for empty and hint text 1385 layout.drawText(canvas, firstLine, lastLine); 1386 } 1387 } 1388 1389 private int getAvailableDisplayListIndex(int[] blockIndices, int numberOfBlocks, 1390 int searchStartIndex) { 1391 int length = mTextDisplayLists.length; 1392 for (int i = searchStartIndex; i < length; i++) { 1393 boolean blockIndexFound = false; 1394 for (int j = 0; j < numberOfBlocks; j++) { 1395 if (blockIndices[j] == i) { 1396 blockIndexFound = true; 1397 break; 1398 } 1399 } 1400 if (blockIndexFound) continue; 1401 return i; 1402 } 1403 1404 // No available index found, the pool has to grow 1405 int newSize = ArrayUtils.idealIntArraySize(length + 1); 1406 DisplayList[] displayLists = new DisplayList[newSize]; 1407 System.arraycopy(mTextDisplayLists, 0, displayLists, 0, length); 1408 mTextDisplayLists = displayLists; 1409 return length; 1410 } 1411 1412 private void drawCursor(Canvas canvas, int cursorOffsetVertical) { 1413 final boolean translate = cursorOffsetVertical != 0; 1414 if (translate) canvas.translate(0, cursorOffsetVertical); 1415 for (int i = 0; i < mCursorCount; i++) { 1416 mCursorDrawable[i].draw(canvas); 1417 } 1418 if (translate) canvas.translate(0, -cursorOffsetVertical); 1419 } 1420 1421 /** 1422 * Invalidates all the sub-display lists that overlap the specified character range 1423 */ 1424 void invalidateTextDisplayList(Layout layout, int start, int end) { 1425 if (mTextDisplayLists != null && layout instanceof DynamicLayout) { 1426 final int firstLine = layout.getLineForOffset(start); 1427 final int lastLine = layout.getLineForOffset(end); 1428 1429 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1430 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1431 int[] blockIndices = dynamicLayout.getBlockIndices(); 1432 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1433 1434 int i = 0; 1435 // Skip the blocks before firstLine 1436 while (i < numberOfBlocks) { 1437 if (blockEndLines[i] >= firstLine) break; 1438 i++; 1439 } 1440 1441 // Invalidate all subsequent blocks until lastLine is passed 1442 while (i < numberOfBlocks) { 1443 final int blockIndex = blockIndices[i]; 1444 if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX) { 1445 mTextDisplayLists[blockIndex].clear(); 1446 } 1447 if (blockEndLines[i] >= lastLine) break; 1448 i++; 1449 } 1450 } 1451 } 1452 1453 void invalidateTextDisplayList() { 1454 if (mTextDisplayLists != null) { 1455 for (int i = 0; i < mTextDisplayLists.length; i++) { 1456 if (mTextDisplayLists[i] != null) mTextDisplayLists[i].clear(); 1457 } 1458 } 1459 } 1460 1461 void updateCursorsPositions() { 1462 if (mTextView.mCursorDrawableRes == 0) { 1463 mCursorCount = 0; 1464 return; 1465 } 1466 1467 Layout layout = mTextView.getLayout(); 1468 Layout hintLayout = mTextView.getHintLayout(); 1469 final int offset = mTextView.getSelectionStart(); 1470 final int line = layout.getLineForOffset(offset); 1471 final int top = layout.getLineTop(line); 1472 final int bottom = layout.getLineTop(line + 1); 1473 1474 mCursorCount = layout.isLevelBoundary(offset) ? 2 : 1; 1475 1476 int middle = bottom; 1477 if (mCursorCount == 2) { 1478 // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)} 1479 middle = (top + bottom) >> 1; 1480 } 1481 1482 boolean clamped = layout.shouldClampCursor(line); 1483 updateCursorPosition(0, top, middle, 1484 getPrimaryHorizontal(layout, hintLayout, offset, clamped)); 1485 1486 if (mCursorCount == 2) { 1487 updateCursorPosition(1, middle, bottom, 1488 layout.getSecondaryHorizontal(offset, clamped)); 1489 } 1490 } 1491 1492 private float getPrimaryHorizontal(Layout layout, Layout hintLayout, int offset, 1493 boolean clamped) { 1494 if (TextUtils.isEmpty(layout.getText()) && 1495 hintLayout != null && 1496 !TextUtils.isEmpty(hintLayout.getText())) { 1497 return hintLayout.getPrimaryHorizontal(offset, clamped); 1498 } else { 1499 return layout.getPrimaryHorizontal(offset, clamped); 1500 } 1501 } 1502 1503 /** 1504 * @return true if the selection mode was actually started. 1505 */ 1506 boolean startSelectionActionMode() { 1507 if (mSelectionActionMode != null) { 1508 // Selection action mode is already started 1509 return false; 1510 } 1511 1512 if (!canSelectText() || !mTextView.requestFocus()) { 1513 Log.w(TextView.LOG_TAG, 1514 "TextView does not support text selection. Action mode cancelled."); 1515 return false; 1516 } 1517 1518 if (!mTextView.hasSelection()) { 1519 // There may already be a selection on device rotation 1520 if (!selectCurrentWord()) { 1521 // No word found under cursor or text selection not permitted. 1522 return false; 1523 } 1524 } 1525 1526 boolean willExtract = extractedTextModeWillBeStarted(); 1527 1528 // Do not start the action mode when extracted text will show up full screen, which would 1529 // immediately hide the newly created action bar and would be visually distracting. 1530 if (!willExtract) { 1531 ActionMode.Callback actionModeCallback = new SelectionActionModeCallback(); 1532 mSelectionActionMode = mTextView.startActionMode(actionModeCallback); 1533 } 1534 1535 final boolean selectionStarted = mSelectionActionMode != null || willExtract; 1536 if (selectionStarted && !mTextView.isTextSelectable() && mShowSoftInputOnFocus) { 1537 // Show the IME to be able to replace text, except when selecting non editable text. 1538 final InputMethodManager imm = InputMethodManager.peekInstance(); 1539 if (imm != null) { 1540 imm.showSoftInput(mTextView, 0, null); 1541 } 1542 } 1543 1544 return selectionStarted; 1545 } 1546 1547 private boolean extractedTextModeWillBeStarted() { 1548 if (!(mTextView instanceof ExtractEditText)) { 1549 final InputMethodManager imm = InputMethodManager.peekInstance(); 1550 return imm != null && imm.isFullscreenMode(); 1551 } 1552 return false; 1553 } 1554 1555 /** 1556 * @return <code>true</code> if the cursor/current selection overlaps a {@link SuggestionSpan}. 1557 */ 1558 private boolean isCursorInsideSuggestionSpan() { 1559 CharSequence text = mTextView.getText(); 1560 if (!(text instanceof Spannable)) return false; 1561 1562 SuggestionSpan[] suggestionSpans = ((Spannable) text).getSpans( 1563 mTextView.getSelectionStart(), mTextView.getSelectionEnd(), SuggestionSpan.class); 1564 return (suggestionSpans.length > 0); 1565 } 1566 1567 /** 1568 * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with 1569 * {@link SuggestionSpan#FLAG_EASY_CORRECT} set. 1570 */ 1571 private boolean isCursorInsideEasyCorrectionSpan() { 1572 Spannable spannable = (Spannable) mTextView.getText(); 1573 SuggestionSpan[] suggestionSpans = spannable.getSpans(mTextView.getSelectionStart(), 1574 mTextView.getSelectionEnd(), SuggestionSpan.class); 1575 for (int i = 0; i < suggestionSpans.length; i++) { 1576 if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) { 1577 return true; 1578 } 1579 } 1580 return false; 1581 } 1582 1583 void onTouchUpEvent(MotionEvent event) { 1584 boolean selectAllGotFocus = mSelectAllOnFocus && mTextView.didTouchFocusSelect(); 1585 hideControllers(); 1586 CharSequence text = mTextView.getText(); 1587 if (!selectAllGotFocus && text.length() > 0) { 1588 // Move cursor 1589 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 1590 Selection.setSelection((Spannable) text, offset); 1591 if (mSpellChecker != null) { 1592 // When the cursor moves, the word that was typed may need spell check 1593 mSpellChecker.onSelectionChanged(); 1594 } 1595 if (!extractedTextModeWillBeStarted()) { 1596 if (isCursorInsideEasyCorrectionSpan()) { 1597 mShowSuggestionRunnable = new Runnable() { 1598 public void run() { 1599 showSuggestions(); 1600 } 1601 }; 1602 // removeCallbacks is performed on every touch 1603 mTextView.postDelayed(mShowSuggestionRunnable, 1604 ViewConfiguration.getDoubleTapTimeout()); 1605 } else if (hasInsertionController()) { 1606 getInsertionController().show(); 1607 } 1608 } 1609 } 1610 } 1611 1612 protected void stopSelectionActionMode() { 1613 if (mSelectionActionMode != null) { 1614 // This will hide the mSelectionModifierCursorController 1615 mSelectionActionMode.finish(); 1616 } 1617 } 1618 1619 /** 1620 * @return True if this view supports insertion handles. 1621 */ 1622 boolean hasInsertionController() { 1623 return mInsertionControllerEnabled; 1624 } 1625 1626 /** 1627 * @return True if this view supports selection handles. 1628 */ 1629 boolean hasSelectionController() { 1630 return mSelectionControllerEnabled; 1631 } 1632 1633 InsertionPointCursorController getInsertionController() { 1634 if (!mInsertionControllerEnabled) { 1635 return null; 1636 } 1637 1638 if (mInsertionPointCursorController == null) { 1639 mInsertionPointCursorController = new InsertionPointCursorController(); 1640 1641 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 1642 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 1643 } 1644 1645 return mInsertionPointCursorController; 1646 } 1647 1648 SelectionModifierCursorController getSelectionController() { 1649 if (!mSelectionControllerEnabled) { 1650 return null; 1651 } 1652 1653 if (mSelectionModifierCursorController == null) { 1654 mSelectionModifierCursorController = new SelectionModifierCursorController(); 1655 1656 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 1657 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 1658 } 1659 1660 return mSelectionModifierCursorController; 1661 } 1662 1663 private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) { 1664 if (mCursorDrawable[cursorIndex] == null) 1665 mCursorDrawable[cursorIndex] = mTextView.getResources().getDrawable( 1666 mTextView.mCursorDrawableRes); 1667 1668 if (mTempRect == null) mTempRect = new Rect(); 1669 mCursorDrawable[cursorIndex].getPadding(mTempRect); 1670 final int width = mCursorDrawable[cursorIndex].getIntrinsicWidth(); 1671 horizontal = Math.max(0.5f, horizontal - 0.5f); 1672 final int left = (int) (horizontal) - mTempRect.left; 1673 mCursorDrawable[cursorIndex].setBounds(left, top - mTempRect.top, left + width, 1674 bottom + mTempRect.bottom); 1675 } 1676 1677 /** 1678 * Called by the framework in response to a text auto-correction (such as fixing a typo using a 1679 * a dictionnary) from the current input method, provided by it calling 1680 * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default 1681 * implementation flashes the background of the corrected word to provide feedback to the user. 1682 * 1683 * @param info The auto correct info about the text that was corrected. 1684 */ 1685 public void onCommitCorrection(CorrectionInfo info) { 1686 if (mCorrectionHighlighter == null) { 1687 mCorrectionHighlighter = new CorrectionHighlighter(); 1688 } else { 1689 mCorrectionHighlighter.invalidate(false); 1690 } 1691 1692 mCorrectionHighlighter.highlight(info); 1693 } 1694 1695 void showSuggestions() { 1696 if (mSuggestionsPopupWindow == null) { 1697 mSuggestionsPopupWindow = new SuggestionsPopupWindow(); 1698 } 1699 hideControllers(); 1700 mSuggestionsPopupWindow.show(); 1701 } 1702 1703 boolean areSuggestionsShown() { 1704 return mSuggestionsPopupWindow != null && mSuggestionsPopupWindow.isShowing(); 1705 } 1706 1707 void onScrollChanged() { 1708 if (mPositionListener != null) { 1709 mPositionListener.onScrollChanged(); 1710 } 1711 } 1712 1713 /** 1714 * @return True when the TextView isFocused and has a valid zero-length selection (cursor). 1715 */ 1716 private boolean shouldBlink() { 1717 if (!isCursorVisible() || !mTextView.isFocused()) return false; 1718 1719 final int start = mTextView.getSelectionStart(); 1720 if (start < 0) return false; 1721 1722 final int end = mTextView.getSelectionEnd(); 1723 if (end < 0) return false; 1724 1725 return start == end; 1726 } 1727 1728 void makeBlink() { 1729 if (shouldBlink()) { 1730 mShowCursor = SystemClock.uptimeMillis(); 1731 if (mBlink == null) mBlink = new Blink(); 1732 mBlink.removeCallbacks(mBlink); 1733 mBlink.postAtTime(mBlink, mShowCursor + BLINK); 1734 } else { 1735 if (mBlink != null) mBlink.removeCallbacks(mBlink); 1736 } 1737 } 1738 1739 private class Blink extends Handler implements Runnable { 1740 private boolean mCancelled; 1741 1742 public void run() { 1743 if (mCancelled) { 1744 return; 1745 } 1746 1747 removeCallbacks(Blink.this); 1748 1749 if (shouldBlink()) { 1750 if (mTextView.getLayout() != null) { 1751 mTextView.invalidateCursorPath(); 1752 } 1753 1754 postAtTime(this, SystemClock.uptimeMillis() + BLINK); 1755 } 1756 } 1757 1758 void cancel() { 1759 if (!mCancelled) { 1760 removeCallbacks(Blink.this); 1761 mCancelled = true; 1762 } 1763 } 1764 1765 void uncancel() { 1766 mCancelled = false; 1767 } 1768 } 1769 1770 private DragShadowBuilder getTextThumbnailBuilder(CharSequence text) { 1771 TextView shadowView = (TextView) View.inflate(mTextView.getContext(), 1772 com.android.internal.R.layout.text_drag_thumbnail, null); 1773 1774 if (shadowView == null) { 1775 throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); 1776 } 1777 1778 if (text.length() > DRAG_SHADOW_MAX_TEXT_LENGTH) { 1779 text = text.subSequence(0, DRAG_SHADOW_MAX_TEXT_LENGTH); 1780 } 1781 shadowView.setText(text); 1782 shadowView.setTextColor(mTextView.getTextColors()); 1783 1784 shadowView.setTextAppearance(mTextView.getContext(), R.styleable.Theme_textAppearanceLarge); 1785 shadowView.setGravity(Gravity.CENTER); 1786 1787 shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 1788 ViewGroup.LayoutParams.WRAP_CONTENT)); 1789 1790 final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); 1791 shadowView.measure(size, size); 1792 1793 shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight()); 1794 shadowView.invalidate(); 1795 return new DragShadowBuilder(shadowView); 1796 } 1797 1798 private static class DragLocalState { 1799 public TextView sourceTextView; 1800 public int start, end; 1801 1802 public DragLocalState(TextView sourceTextView, int start, int end) { 1803 this.sourceTextView = sourceTextView; 1804 this.start = start; 1805 this.end = end; 1806 } 1807 } 1808 1809 void onDrop(DragEvent event) { 1810 StringBuilder content = new StringBuilder(""); 1811 ClipData clipData = event.getClipData(); 1812 final int itemCount = clipData.getItemCount(); 1813 for (int i=0; i < itemCount; i++) { 1814 Item item = clipData.getItemAt(i); 1815 content.append(item.coerceToStyledText(mTextView.getContext())); 1816 } 1817 1818 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 1819 1820 Object localState = event.getLocalState(); 1821 DragLocalState dragLocalState = null; 1822 if (localState instanceof DragLocalState) { 1823 dragLocalState = (DragLocalState) localState; 1824 } 1825 boolean dragDropIntoItself = dragLocalState != null && 1826 dragLocalState.sourceTextView == mTextView; 1827 1828 if (dragDropIntoItself) { 1829 if (offset >= dragLocalState.start && offset < dragLocalState.end) { 1830 // A drop inside the original selection discards the drop. 1831 return; 1832 } 1833 } 1834 1835 final int originalLength = mTextView.getText().length(); 1836 long minMax = mTextView.prepareSpacesAroundPaste(offset, offset, content); 1837 int min = TextUtils.unpackRangeStartFromLong(minMax); 1838 int max = TextUtils.unpackRangeEndFromLong(minMax); 1839 1840 Selection.setSelection((Spannable) mTextView.getText(), max); 1841 mTextView.replaceText_internal(min, max, content); 1842 1843 if (dragDropIntoItself) { 1844 int dragSourceStart = dragLocalState.start; 1845 int dragSourceEnd = dragLocalState.end; 1846 if (max <= dragSourceStart) { 1847 // Inserting text before selection has shifted positions 1848 final int shift = mTextView.getText().length() - originalLength; 1849 dragSourceStart += shift; 1850 dragSourceEnd += shift; 1851 } 1852 1853 // Delete original selection 1854 mTextView.deleteText_internal(dragSourceStart, dragSourceEnd); 1855 1856 // Make sure we do not leave two adjacent spaces. 1857 final int prevCharIdx = Math.max(0, dragSourceStart - 1); 1858 final int nextCharIdx = Math.min(mTextView.getText().length(), dragSourceStart + 1); 1859 if (nextCharIdx > prevCharIdx + 1) { 1860 CharSequence t = mTextView.getTransformedText(prevCharIdx, nextCharIdx); 1861 if (Character.isSpaceChar(t.charAt(0)) && Character.isSpaceChar(t.charAt(1))) { 1862 mTextView.deleteText_internal(prevCharIdx, prevCharIdx + 1); 1863 } 1864 } 1865 } 1866 } 1867 1868 public void addSpanWatchers(Spannable text) { 1869 final int textLength = text.length(); 1870 1871 if (mKeyListener != null) { 1872 text.setSpan(mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 1873 } 1874 1875 if (mEasyEditSpanController == null) { 1876 mEasyEditSpanController = new EasyEditSpanController(); 1877 } 1878 text.setSpan(mEasyEditSpanController, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 1879 } 1880 1881 /** 1882 * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related 1883 * pop-up should be displayed. 1884 */ 1885 class EasyEditSpanController implements SpanWatcher { 1886 1887 private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs 1888 1889 private EasyEditPopupWindow mPopupWindow; 1890 1891 private Runnable mHidePopup; 1892 1893 @Override 1894 public void onSpanAdded(Spannable text, Object span, int start, int end) { 1895 if (span instanceof EasyEditSpan) { 1896 if (mPopupWindow == null) { 1897 mPopupWindow = new EasyEditPopupWindow(); 1898 mHidePopup = new Runnable() { 1899 @Override 1900 public void run() { 1901 hide(); 1902 } 1903 }; 1904 } 1905 1906 // Make sure there is only at most one EasyEditSpan in the text 1907 if (mPopupWindow.mEasyEditSpan != null) { 1908 mPopupWindow.mEasyEditSpan.setDeleteEnabled(false); 1909 } 1910 1911 mPopupWindow.setEasyEditSpan((EasyEditSpan) span); 1912 mPopupWindow.setOnDeleteListener(new EasyEditDeleteListener() { 1913 @Override 1914 public void onDeleteClick(EasyEditSpan span) { 1915 Editable editable = (Editable) mTextView.getText(); 1916 int start = editable.getSpanStart(span); 1917 int end = editable.getSpanEnd(span); 1918 if (start >= 0 && end >= 0) { 1919 sendNotification(EasyEditSpan.TEXT_DELETED, span); 1920 mTextView.deleteText_internal(start, end); 1921 } 1922 editable.removeSpan(span); 1923 } 1924 }); 1925 1926 if (mTextView.getWindowVisibility() != View.VISIBLE) { 1927 // The window is not visible yet, ignore the text change. 1928 return; 1929 } 1930 1931 if (mTextView.getLayout() == null) { 1932 // The view has not been laid out yet, ignore the text change 1933 return; 1934 } 1935 1936 if (extractedTextModeWillBeStarted()) { 1937 // The input is in extract mode. Do not handle the easy edit in 1938 // the original TextView, as the ExtractEditText will do 1939 return; 1940 } 1941 1942 mPopupWindow.show(); 1943 mTextView.removeCallbacks(mHidePopup); 1944 mTextView.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS); 1945 } 1946 } 1947 1948 @Override 1949 public void onSpanRemoved(Spannable text, Object span, int start, int end) { 1950 if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { 1951 hide(); 1952 } 1953 } 1954 1955 @Override 1956 public void onSpanChanged(Spannable text, Object span, int previousStart, int previousEnd, 1957 int newStart, int newEnd) { 1958 if (mPopupWindow != null && span instanceof EasyEditSpan) { 1959 EasyEditSpan easyEditSpan = (EasyEditSpan) span; 1960 sendNotification(EasyEditSpan.TEXT_MODIFIED, easyEditSpan); 1961 text.removeSpan(easyEditSpan); 1962 } 1963 } 1964 1965 public void hide() { 1966 if (mPopupWindow != null) { 1967 mPopupWindow.hide(); 1968 mTextView.removeCallbacks(mHidePopup); 1969 } 1970 } 1971 1972 private void sendNotification(int textChangedType, EasyEditSpan span) { 1973 try { 1974 PendingIntent pendingIntent = span.getPendingIntent(); 1975 if (pendingIntent != null) { 1976 Intent intent = new Intent(); 1977 intent.putExtra(EasyEditSpan.EXTRA_TEXT_CHANGED_TYPE, textChangedType); 1978 pendingIntent.send(mTextView.getContext(), 0, intent); 1979 } 1980 } catch (CanceledException e) { 1981 // This should not happen, as we should try to send the intent only once. 1982 Log.w(TAG, "PendingIntent for notification cannot be sent", e); 1983 } 1984 } 1985 } 1986 1987 /** 1988 * Listens for the delete event triggered by {@link EasyEditPopupWindow}. 1989 */ 1990 private interface EasyEditDeleteListener { 1991 1992 /** 1993 * Clicks the delete pop-up. 1994 */ 1995 void onDeleteClick(EasyEditSpan span); 1996 } 1997 1998 /** 1999 * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled 2000 * by {@link EasyEditSpanController}. 2001 */ 2002 private class EasyEditPopupWindow extends PinnedPopupWindow 2003 implements OnClickListener { 2004 private static final int POPUP_TEXT_LAYOUT = 2005 com.android.internal.R.layout.text_edit_action_popup_text; 2006 private TextView mDeleteTextView; 2007 private EasyEditSpan mEasyEditSpan; 2008 private EasyEditDeleteListener mOnDeleteListener; 2009 2010 @Override 2011 protected void createPopupWindow() { 2012 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 2013 com.android.internal.R.attr.textSelectHandleWindowStyle); 2014 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 2015 mPopupWindow.setClippingEnabled(true); 2016 } 2017 2018 @Override 2019 protected void initContentView() { 2020 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 2021 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 2022 mContentView = linearLayout; 2023 mContentView.setBackgroundResource( 2024 com.android.internal.R.drawable.text_edit_side_paste_window); 2025 2026 LayoutInflater inflater = (LayoutInflater)mTextView.getContext(). 2027 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2028 2029 LayoutParams wrapContent = new LayoutParams( 2030 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 2031 2032 mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2033 mDeleteTextView.setLayoutParams(wrapContent); 2034 mDeleteTextView.setText(com.android.internal.R.string.delete); 2035 mDeleteTextView.setOnClickListener(this); 2036 mContentView.addView(mDeleteTextView); 2037 } 2038 2039 public void setEasyEditSpan(EasyEditSpan easyEditSpan) { 2040 mEasyEditSpan = easyEditSpan; 2041 } 2042 2043 private void setOnDeleteListener(EasyEditDeleteListener listener) { 2044 mOnDeleteListener = listener; 2045 } 2046 2047 @Override 2048 public void onClick(View view) { 2049 if (view == mDeleteTextView 2050 && mEasyEditSpan != null && mEasyEditSpan.isDeleteEnabled() 2051 && mOnDeleteListener != null) { 2052 mOnDeleteListener.onDeleteClick(mEasyEditSpan); 2053 } 2054 } 2055 2056 @Override 2057 public void hide() { 2058 if (mEasyEditSpan != null) { 2059 mEasyEditSpan.setDeleteEnabled(false); 2060 } 2061 mOnDeleteListener = null; 2062 super.hide(); 2063 } 2064 2065 @Override 2066 protected int getTextOffset() { 2067 // Place the pop-up at the end of the span 2068 Editable editable = (Editable) mTextView.getText(); 2069 return editable.getSpanEnd(mEasyEditSpan); 2070 } 2071 2072 @Override 2073 protected int getVerticalLocalPosition(int line) { 2074 return mTextView.getLayout().getLineBottom(line); 2075 } 2076 2077 @Override 2078 protected int clipVertically(int positionY) { 2079 // As we display the pop-up below the span, no vertical clipping is required. 2080 return positionY; 2081 } 2082 } 2083 2084 private class PositionListener implements ViewTreeObserver.OnPreDrawListener { 2085 // 3 handles 2086 // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others) 2087 private final int MAXIMUM_NUMBER_OF_LISTENERS = 6; 2088 private TextViewPositionListener[] mPositionListeners = 2089 new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS]; 2090 private boolean mCanMove[] = new boolean[MAXIMUM_NUMBER_OF_LISTENERS]; 2091 private boolean mPositionHasChanged = true; 2092 // Absolute position of the TextView with respect to its parent window 2093 private int mPositionX, mPositionY; 2094 private int mNumberOfListeners; 2095 private boolean mScrollHasChanged; 2096 final int[] mTempCoords = new int[2]; 2097 2098 public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) { 2099 if (mNumberOfListeners == 0) { 2100 updatePosition(); 2101 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2102 vto.addOnPreDrawListener(this); 2103 } 2104 2105 int emptySlotIndex = -1; 2106 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2107 TextViewPositionListener listener = mPositionListeners[i]; 2108 if (listener == positionListener) { 2109 return; 2110 } else if (emptySlotIndex < 0 && listener == null) { 2111 emptySlotIndex = i; 2112 } 2113 } 2114 2115 mPositionListeners[emptySlotIndex] = positionListener; 2116 mCanMove[emptySlotIndex] = canMove; 2117 mNumberOfListeners++; 2118 } 2119 2120 public void removeSubscriber(TextViewPositionListener positionListener) { 2121 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2122 if (mPositionListeners[i] == positionListener) { 2123 mPositionListeners[i] = null; 2124 mNumberOfListeners--; 2125 break; 2126 } 2127 } 2128 2129 if (mNumberOfListeners == 0) { 2130 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2131 vto.removeOnPreDrawListener(this); 2132 } 2133 } 2134 2135 public int getPositionX() { 2136 return mPositionX; 2137 } 2138 2139 public int getPositionY() { 2140 return mPositionY; 2141 } 2142 2143 @Override 2144 public boolean onPreDraw() { 2145 updatePosition(); 2146 2147 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2148 if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) { 2149 TextViewPositionListener positionListener = mPositionListeners[i]; 2150 if (positionListener != null) { 2151 positionListener.updatePosition(mPositionX, mPositionY, 2152 mPositionHasChanged, mScrollHasChanged); 2153 } 2154 } 2155 } 2156 2157 mScrollHasChanged = false; 2158 return true; 2159 } 2160 2161 private void updatePosition() { 2162 mTextView.getLocationInWindow(mTempCoords); 2163 2164 mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY; 2165 2166 mPositionX = mTempCoords[0]; 2167 mPositionY = mTempCoords[1]; 2168 } 2169 2170 public void onScrollChanged() { 2171 mScrollHasChanged = true; 2172 } 2173 } 2174 2175 private abstract class PinnedPopupWindow implements TextViewPositionListener { 2176 protected PopupWindow mPopupWindow; 2177 protected ViewGroup mContentView; 2178 int mPositionX, mPositionY; 2179 2180 protected abstract void createPopupWindow(); 2181 protected abstract void initContentView(); 2182 protected abstract int getTextOffset(); 2183 protected abstract int getVerticalLocalPosition(int line); 2184 protected abstract int clipVertically(int positionY); 2185 2186 public PinnedPopupWindow() { 2187 createPopupWindow(); 2188 2189 mPopupWindow.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 2190 mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 2191 mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 2192 2193 initContentView(); 2194 2195 LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2196 ViewGroup.LayoutParams.WRAP_CONTENT); 2197 mContentView.setLayoutParams(wrapContent); 2198 2199 mPopupWindow.setContentView(mContentView); 2200 } 2201 2202 public void show() { 2203 getPositionListener().addSubscriber(this, false /* offset is fixed */); 2204 2205 computeLocalPosition(); 2206 2207 final PositionListener positionListener = getPositionListener(); 2208 updatePosition(positionListener.getPositionX(), positionListener.getPositionY()); 2209 } 2210 2211 protected void measureContent() { 2212 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2213 mContentView.measure( 2214 View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, 2215 View.MeasureSpec.AT_MOST), 2216 View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, 2217 View.MeasureSpec.AT_MOST)); 2218 } 2219 2220 /* The popup window will be horizontally centered on the getTextOffset() and vertically 2221 * positioned according to viewportToContentHorizontalOffset. 2222 * 2223 * This method assumes that mContentView has properly been measured from its content. */ 2224 private void computeLocalPosition() { 2225 measureContent(); 2226 final int width = mContentView.getMeasuredWidth(); 2227 final int offset = getTextOffset(); 2228 mPositionX = (int) (mTextView.getLayout().getPrimaryHorizontal(offset) - width / 2.0f); 2229 mPositionX += mTextView.viewportToContentHorizontalOffset(); 2230 2231 final int line = mTextView.getLayout().getLineForOffset(offset); 2232 mPositionY = getVerticalLocalPosition(line); 2233 mPositionY += mTextView.viewportToContentVerticalOffset(); 2234 } 2235 2236 private void updatePosition(int parentPositionX, int parentPositionY) { 2237 int positionX = parentPositionX + mPositionX; 2238 int positionY = parentPositionY + mPositionY; 2239 2240 positionY = clipVertically(positionY); 2241 2242 // Horizontal clipping 2243 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2244 final int width = mContentView.getMeasuredWidth(); 2245 positionX = Math.min(displayMetrics.widthPixels - width, positionX); 2246 positionX = Math.max(0, positionX); 2247 2248 if (isShowing()) { 2249 mPopupWindow.update(positionX, positionY, -1, -1); 2250 } else { 2251 mPopupWindow.showAtLocation(mTextView, Gravity.NO_GRAVITY, 2252 positionX, positionY); 2253 } 2254 } 2255 2256 public void hide() { 2257 mPopupWindow.dismiss(); 2258 getPositionListener().removeSubscriber(this); 2259 } 2260 2261 @Override 2262 public void updatePosition(int parentPositionX, int parentPositionY, 2263 boolean parentPositionChanged, boolean parentScrolled) { 2264 // Either parentPositionChanged or parentScrolled is true, check if still visible 2265 if (isShowing() && isOffsetVisible(getTextOffset())) { 2266 if (parentScrolled) computeLocalPosition(); 2267 updatePosition(parentPositionX, parentPositionY); 2268 } else { 2269 hide(); 2270 } 2271 } 2272 2273 public boolean isShowing() { 2274 return mPopupWindow.isShowing(); 2275 } 2276 } 2277 2278 private class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener { 2279 private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE; 2280 private static final int ADD_TO_DICTIONARY = -1; 2281 private static final int DELETE_TEXT = -2; 2282 private SuggestionInfo[] mSuggestionInfos; 2283 private int mNumberOfSuggestions; 2284 private boolean mCursorWasVisibleBeforeSuggestions; 2285 private boolean mIsShowingUp = false; 2286 private SuggestionAdapter mSuggestionsAdapter; 2287 private final Comparator<SuggestionSpan> mSuggestionSpanComparator; 2288 private final HashMap<SuggestionSpan, Integer> mSpansLengths; 2289 2290 private class CustomPopupWindow extends PopupWindow { 2291 public CustomPopupWindow(Context context, int defStyle) { 2292 super(context, null, defStyle); 2293 } 2294 2295 @Override 2296 public void dismiss() { 2297 super.dismiss(); 2298 2299 getPositionListener().removeSubscriber(SuggestionsPopupWindow.this); 2300 2301 // Safe cast since show() checks that mTextView.getText() is an Editable 2302 ((Spannable) mTextView.getText()).removeSpan(mSuggestionRangeSpan); 2303 2304 mTextView.setCursorVisible(mCursorWasVisibleBeforeSuggestions); 2305 if (hasInsertionController()) { 2306 getInsertionController().show(); 2307 } 2308 } 2309 } 2310 2311 public SuggestionsPopupWindow() { 2312 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 2313 mSuggestionSpanComparator = new SuggestionSpanComparator(); 2314 mSpansLengths = new HashMap<SuggestionSpan, Integer>(); 2315 } 2316 2317 @Override 2318 protected void createPopupWindow() { 2319 mPopupWindow = new CustomPopupWindow(mTextView.getContext(), 2320 com.android.internal.R.attr.textSuggestionsWindowStyle); 2321 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 2322 mPopupWindow.setFocusable(true); 2323 mPopupWindow.setClippingEnabled(false); 2324 } 2325 2326 @Override 2327 protected void initContentView() { 2328 ListView listView = new ListView(mTextView.getContext()); 2329 mSuggestionsAdapter = new SuggestionAdapter(); 2330 listView.setAdapter(mSuggestionsAdapter); 2331 listView.setOnItemClickListener(this); 2332 mContentView = listView; 2333 2334 // Inflate the suggestion items once and for all. + 2 for add to dictionary and delete 2335 mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS + 2]; 2336 for (int i = 0; i < mSuggestionInfos.length; i++) { 2337 mSuggestionInfos[i] = new SuggestionInfo(); 2338 } 2339 } 2340 2341 public boolean isShowingUp() { 2342 return mIsShowingUp; 2343 } 2344 2345 public void onParentLostFocus() { 2346 mIsShowingUp = false; 2347 } 2348 2349 private class SuggestionInfo { 2350 int suggestionStart, suggestionEnd; // range of actual suggestion within text 2351 SuggestionSpan suggestionSpan; // the SuggestionSpan that this TextView represents 2352 int suggestionIndex; // the index of this suggestion inside suggestionSpan 2353 SpannableStringBuilder text = new SpannableStringBuilder(); 2354 TextAppearanceSpan highlightSpan = new TextAppearanceSpan(mTextView.getContext(), 2355 android.R.style.TextAppearance_SuggestionHighlight); 2356 } 2357 2358 private class SuggestionAdapter extends BaseAdapter { 2359 private LayoutInflater mInflater = (LayoutInflater) mTextView.getContext(). 2360 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2361 2362 @Override 2363 public int getCount() { 2364 return mNumberOfSuggestions; 2365 } 2366 2367 @Override 2368 public Object getItem(int position) { 2369 return mSuggestionInfos[position]; 2370 } 2371 2372 @Override 2373 public long getItemId(int position) { 2374 return position; 2375 } 2376 2377 @Override 2378 public View getView(int position, View convertView, ViewGroup parent) { 2379 TextView textView = (TextView) convertView; 2380 2381 if (textView == null) { 2382 textView = (TextView) mInflater.inflate(mTextView.mTextEditSuggestionItemLayout, 2383 parent, false); 2384 } 2385 2386 final SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 2387 textView.setText(suggestionInfo.text); 2388 2389 if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY || 2390 suggestionInfo.suggestionIndex == DELETE_TEXT) { 2391 textView.setBackgroundColor(Color.TRANSPARENT); 2392 } else { 2393 textView.setBackgroundColor(Color.WHITE); 2394 } 2395 2396 return textView; 2397 } 2398 } 2399 2400 private class SuggestionSpanComparator implements Comparator<SuggestionSpan> { 2401 public int compare(SuggestionSpan span1, SuggestionSpan span2) { 2402 final int flag1 = span1.getFlags(); 2403 final int flag2 = span2.getFlags(); 2404 if (flag1 != flag2) { 2405 // The order here should match what is used in updateDrawState 2406 final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 2407 final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 2408 final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0; 2409 final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0; 2410 if (easy1 && !misspelled1) return -1; 2411 if (easy2 && !misspelled2) return 1; 2412 if (misspelled1) return -1; 2413 if (misspelled2) return 1; 2414 } 2415 2416 return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue(); 2417 } 2418 } 2419 2420 /** 2421 * Returns the suggestion spans that cover the current cursor position. The suggestion 2422 * spans are sorted according to the length of text that they are attached to. 2423 */ 2424 private SuggestionSpan[] getSuggestionSpans() { 2425 int pos = mTextView.getSelectionStart(); 2426 Spannable spannable = (Spannable) mTextView.getText(); 2427 SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class); 2428 2429 mSpansLengths.clear(); 2430 for (SuggestionSpan suggestionSpan : suggestionSpans) { 2431 int start = spannable.getSpanStart(suggestionSpan); 2432 int end = spannable.getSpanEnd(suggestionSpan); 2433 mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start)); 2434 } 2435 2436 // The suggestions are sorted according to their types (easy correction first, then 2437 // misspelled) and to the length of the text that they cover (shorter first). 2438 Arrays.sort(suggestionSpans, mSuggestionSpanComparator); 2439 return suggestionSpans; 2440 } 2441 2442 @Override 2443 public void show() { 2444 if (!(mTextView.getText() instanceof Editable)) return; 2445 2446 if (updateSuggestions()) { 2447 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 2448 mTextView.setCursorVisible(false); 2449 mIsShowingUp = true; 2450 super.show(); 2451 } 2452 } 2453 2454 @Override 2455 protected void measureContent() { 2456 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2457 final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec( 2458 displayMetrics.widthPixels, View.MeasureSpec.AT_MOST); 2459 final int verticalMeasure = View.MeasureSpec.makeMeasureSpec( 2460 displayMetrics.heightPixels, View.MeasureSpec.AT_MOST); 2461 2462 int width = 0; 2463 View view = null; 2464 for (int i = 0; i < mNumberOfSuggestions; i++) { 2465 view = mSuggestionsAdapter.getView(i, view, mContentView); 2466 view.getLayoutParams().width = LayoutParams.WRAP_CONTENT; 2467 view.measure(horizontalMeasure, verticalMeasure); 2468 width = Math.max(width, view.getMeasuredWidth()); 2469 } 2470 2471 // Enforce the width based on actual text widths 2472 mContentView.measure( 2473 View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY), 2474 verticalMeasure); 2475 2476 Drawable popupBackground = mPopupWindow.getBackground(); 2477 if (popupBackground != null) { 2478 if (mTempRect == null) mTempRect = new Rect(); 2479 popupBackground.getPadding(mTempRect); 2480 width += mTempRect.left + mTempRect.right; 2481 } 2482 mPopupWindow.setWidth(width); 2483 } 2484 2485 @Override 2486 protected int getTextOffset() { 2487 return mTextView.getSelectionStart(); 2488 } 2489 2490 @Override 2491 protected int getVerticalLocalPosition(int line) { 2492 return mTextView.getLayout().getLineBottom(line); 2493 } 2494 2495 @Override 2496 protected int clipVertically(int positionY) { 2497 final int height = mContentView.getMeasuredHeight(); 2498 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2499 return Math.min(positionY, displayMetrics.heightPixels - height); 2500 } 2501 2502 @Override 2503 public void hide() { 2504 super.hide(); 2505 } 2506 2507 private boolean updateSuggestions() { 2508 Spannable spannable = (Spannable) mTextView.getText(); 2509 SuggestionSpan[] suggestionSpans = getSuggestionSpans(); 2510 2511 final int nbSpans = suggestionSpans.length; 2512 // Suggestions are shown after a delay: the underlying spans may have been removed 2513 if (nbSpans == 0) return false; 2514 2515 mNumberOfSuggestions = 0; 2516 int spanUnionStart = mTextView.getText().length(); 2517 int spanUnionEnd = 0; 2518 2519 SuggestionSpan misspelledSpan = null; 2520 int underlineColor = 0; 2521 2522 for (int spanIndex = 0; spanIndex < nbSpans; spanIndex++) { 2523 SuggestionSpan suggestionSpan = suggestionSpans[spanIndex]; 2524 final int spanStart = spannable.getSpanStart(suggestionSpan); 2525 final int spanEnd = spannable.getSpanEnd(suggestionSpan); 2526 spanUnionStart = Math.min(spanStart, spanUnionStart); 2527 spanUnionEnd = Math.max(spanEnd, spanUnionEnd); 2528 2529 if ((suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) { 2530 misspelledSpan = suggestionSpan; 2531 } 2532 2533 // The first span dictates the background color of the highlighted text 2534 if (spanIndex == 0) underlineColor = suggestionSpan.getUnderlineColor(); 2535 2536 String[] suggestions = suggestionSpan.getSuggestions(); 2537 int nbSuggestions = suggestions.length; 2538 for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) { 2539 String suggestion = suggestions[suggestionIndex]; 2540 2541 boolean suggestionIsDuplicate = false; 2542 for (int i = 0; i < mNumberOfSuggestions; i++) { 2543 if (mSuggestionInfos[i].text.toString().equals(suggestion)) { 2544 SuggestionSpan otherSuggestionSpan = mSuggestionInfos[i].suggestionSpan; 2545 final int otherSpanStart = spannable.getSpanStart(otherSuggestionSpan); 2546 final int otherSpanEnd = spannable.getSpanEnd(otherSuggestionSpan); 2547 if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) { 2548 suggestionIsDuplicate = true; 2549 break; 2550 } 2551 } 2552 } 2553 2554 if (!suggestionIsDuplicate) { 2555 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2556 suggestionInfo.suggestionSpan = suggestionSpan; 2557 suggestionInfo.suggestionIndex = suggestionIndex; 2558 suggestionInfo.text.replace(0, suggestionInfo.text.length(), suggestion); 2559 2560 mNumberOfSuggestions++; 2561 2562 if (mNumberOfSuggestions == MAX_NUMBER_SUGGESTIONS) { 2563 // Also end outer for loop 2564 spanIndex = nbSpans; 2565 break; 2566 } 2567 } 2568 } 2569 } 2570 2571 for (int i = 0; i < mNumberOfSuggestions; i++) { 2572 highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd); 2573 } 2574 2575 // Add "Add to dictionary" item if there is a span with the misspelled flag 2576 if (misspelledSpan != null) { 2577 final int misspelledStart = spannable.getSpanStart(misspelledSpan); 2578 final int misspelledEnd = spannable.getSpanEnd(misspelledSpan); 2579 if (misspelledStart >= 0 && misspelledEnd > misspelledStart) { 2580 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2581 suggestionInfo.suggestionSpan = misspelledSpan; 2582 suggestionInfo.suggestionIndex = ADD_TO_DICTIONARY; 2583 suggestionInfo.text.replace(0, suggestionInfo.text.length(), mTextView. 2584 getContext().getString(com.android.internal.R.string.addToDictionary)); 2585 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0, 2586 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2587 2588 mNumberOfSuggestions++; 2589 } 2590 } 2591 2592 // Delete item 2593 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2594 suggestionInfo.suggestionSpan = null; 2595 suggestionInfo.suggestionIndex = DELETE_TEXT; 2596 suggestionInfo.text.replace(0, suggestionInfo.text.length(), 2597 mTextView.getContext().getString(com.android.internal.R.string.deleteText)); 2598 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0, 2599 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2600 mNumberOfSuggestions++; 2601 2602 if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan(); 2603 if (underlineColor == 0) { 2604 // Fallback on the default highlight color when the first span does not provide one 2605 mSuggestionRangeSpan.setBackgroundColor(mTextView.mHighlightColor); 2606 } else { 2607 final float BACKGROUND_TRANSPARENCY = 0.4f; 2608 final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY); 2609 mSuggestionRangeSpan.setBackgroundColor( 2610 (underlineColor & 0x00FFFFFF) + (newAlpha << 24)); 2611 } 2612 spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd, 2613 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2614 2615 mSuggestionsAdapter.notifyDataSetChanged(); 2616 return true; 2617 } 2618 2619 private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart, 2620 int unionEnd) { 2621 final Spannable text = (Spannable) mTextView.getText(); 2622 final int spanStart = text.getSpanStart(suggestionInfo.suggestionSpan); 2623 final int spanEnd = text.getSpanEnd(suggestionInfo.suggestionSpan); 2624 2625 // Adjust the start/end of the suggestion span 2626 suggestionInfo.suggestionStart = spanStart - unionStart; 2627 suggestionInfo.suggestionEnd = suggestionInfo.suggestionStart 2628 + suggestionInfo.text.length(); 2629 2630 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 2631 suggestionInfo.text.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2632 2633 // Add the text before and after the span. 2634 final String textAsString = text.toString(); 2635 suggestionInfo.text.insert(0, textAsString.substring(unionStart, spanStart)); 2636 suggestionInfo.text.append(textAsString.substring(spanEnd, unionEnd)); 2637 } 2638 2639 @Override 2640 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 2641 Editable editable = (Editable) mTextView.getText(); 2642 SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 2643 2644 if (suggestionInfo.suggestionIndex == DELETE_TEXT) { 2645 final int spanUnionStart = editable.getSpanStart(mSuggestionRangeSpan); 2646 int spanUnionEnd = editable.getSpanEnd(mSuggestionRangeSpan); 2647 if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) { 2648 // Do not leave two adjacent spaces after deletion, or one at beginning of text 2649 if (spanUnionEnd < editable.length() && 2650 Character.isSpaceChar(editable.charAt(spanUnionEnd)) && 2651 (spanUnionStart == 0 || 2652 Character.isSpaceChar(editable.charAt(spanUnionStart - 1)))) { 2653 spanUnionEnd = spanUnionEnd + 1; 2654 } 2655 mTextView.deleteText_internal(spanUnionStart, spanUnionEnd); 2656 } 2657 hide(); 2658 return; 2659 } 2660 2661 final int spanStart = editable.getSpanStart(suggestionInfo.suggestionSpan); 2662 final int spanEnd = editable.getSpanEnd(suggestionInfo.suggestionSpan); 2663 if (spanStart < 0 || spanEnd <= spanStart) { 2664 // Span has been removed 2665 hide(); 2666 return; 2667 } 2668 2669 final String originalText = editable.toString().substring(spanStart, spanEnd); 2670 2671 if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY) { 2672 Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT); 2673 intent.putExtra("word", originalText); 2674 intent.putExtra("locale", mTextView.getTextServicesLocale().toString()); 2675 // Put a listener to replace the original text with a word which the user 2676 // modified in a user dictionary dialog. 2677 mUserDictionaryListener.waitForUserDictionaryAdded( 2678 mTextView, originalText, spanStart, spanEnd); 2679 intent.putExtra("listener", new Messenger(mUserDictionaryListener)); 2680 intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); 2681 mTextView.getContext().startActivity(intent); 2682 // There is no way to know if the word was indeed added. Re-check. 2683 // TODO The ExtractEditText should remove the span in the original text instead 2684 editable.removeSpan(suggestionInfo.suggestionSpan); 2685 Selection.setSelection(editable, spanEnd); 2686 updateSpellCheckSpans(spanStart, spanEnd, false); 2687 } else { 2688 // SuggestionSpans are removed by replace: save them before 2689 SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd, 2690 SuggestionSpan.class); 2691 final int length = suggestionSpans.length; 2692 int[] suggestionSpansStarts = new int[length]; 2693 int[] suggestionSpansEnds = new int[length]; 2694 int[] suggestionSpansFlags = new int[length]; 2695 for (int i = 0; i < length; i++) { 2696 final SuggestionSpan suggestionSpan = suggestionSpans[i]; 2697 suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan); 2698 suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan); 2699 suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan); 2700 2701 // Remove potential misspelled flags 2702 int suggestionSpanFlags = suggestionSpan.getFlags(); 2703 if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) > 0) { 2704 suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED; 2705 suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 2706 suggestionSpan.setFlags(suggestionSpanFlags); 2707 } 2708 } 2709 2710 final int suggestionStart = suggestionInfo.suggestionStart; 2711 final int suggestionEnd = suggestionInfo.suggestionEnd; 2712 final String suggestion = suggestionInfo.text.subSequence( 2713 suggestionStart, suggestionEnd).toString(); 2714 mTextView.replaceText_internal(spanStart, spanEnd, suggestion); 2715 2716 // Notify source IME of the suggestion pick. Do this before 2717 // swaping texts. 2718 suggestionInfo.suggestionSpan.notifySelection( 2719 mTextView.getContext(), originalText, suggestionInfo.suggestionIndex); 2720 2721 // Swap text content between actual text and Suggestion span 2722 String[] suggestions = suggestionInfo.suggestionSpan.getSuggestions(); 2723 suggestions[suggestionInfo.suggestionIndex] = originalText; 2724 2725 // Restore previous SuggestionSpans 2726 final int lengthDifference = suggestion.length() - (spanEnd - spanStart); 2727 for (int i = 0; i < length; i++) { 2728 // Only spans that include the modified region make sense after replacement 2729 // Spans partially included in the replaced region are removed, there is no 2730 // way to assign them a valid range after replacement 2731 if (suggestionSpansStarts[i] <= spanStart && 2732 suggestionSpansEnds[i] >= spanEnd) { 2733 mTextView.setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i], 2734 suggestionSpansEnds[i] + lengthDifference, suggestionSpansFlags[i]); 2735 } 2736 } 2737 2738 // Move cursor at the end of the replaced word 2739 final int newCursorPosition = spanEnd + lengthDifference; 2740 mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); 2741 } 2742 2743 hide(); 2744 } 2745 } 2746 2747 /** 2748 * An ActionMode Callback class that is used to provide actions while in text selection mode. 2749 * 2750 * The default callback provides a subset of Select All, Cut, Copy and Paste actions, depending 2751 * on which of these this TextView supports. 2752 */ 2753 private class SelectionActionModeCallback implements ActionMode.Callback { 2754 2755 @Override 2756 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 2757 TypedArray styledAttributes = mTextView.getContext().obtainStyledAttributes( 2758 com.android.internal.R.styleable.SelectionModeDrawables); 2759 2760 mode.setTitle(mTextView.getContext().getString( 2761 com.android.internal.R.string.textSelectionCABTitle)); 2762 mode.setSubtitle(null); 2763 mode.setTitleOptionalHint(true); 2764 2765 menu.add(0, TextView.ID_SELECT_ALL, 0, com.android.internal.R.string.selectAll). 2766 setIcon(styledAttributes.getResourceId( 2767 R.styleable.SelectionModeDrawables_actionModeSelectAllDrawable, 0)). 2768 setAlphabeticShortcut('a'). 2769 setShowAsAction( 2770 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2771 2772 if (mTextView.canCut()) { 2773 menu.add(0, TextView.ID_CUT, 0, com.android.internal.R.string.cut). 2774 setIcon(styledAttributes.getResourceId( 2775 R.styleable.SelectionModeDrawables_actionModeCutDrawable, 0)). 2776 setAlphabeticShortcut('x'). 2777 setShowAsAction( 2778 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2779 } 2780 2781 if (mTextView.canCopy()) { 2782 menu.add(0, TextView.ID_COPY, 0, com.android.internal.R.string.copy). 2783 setIcon(styledAttributes.getResourceId( 2784 R.styleable.SelectionModeDrawables_actionModeCopyDrawable, 0)). 2785 setAlphabeticShortcut('c'). 2786 setShowAsAction( 2787 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2788 } 2789 2790 if (mTextView.canPaste()) { 2791 menu.add(0, TextView.ID_PASTE, 0, com.android.internal.R.string.paste). 2792 setIcon(styledAttributes.getResourceId( 2793 R.styleable.SelectionModeDrawables_actionModePasteDrawable, 0)). 2794 setAlphabeticShortcut('v'). 2795 setShowAsAction( 2796 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2797 } 2798 2799 styledAttributes.recycle(); 2800 2801 if (mCustomSelectionActionModeCallback != null) { 2802 if (!mCustomSelectionActionModeCallback.onCreateActionMode(mode, menu)) { 2803 // The custom mode can choose to cancel the action mode 2804 return false; 2805 } 2806 } 2807 2808 if (menu.hasVisibleItems() || mode.getCustomView() != null) { 2809 getSelectionController().show(); 2810 mTextView.setHasTransientState(true); 2811 return true; 2812 } else { 2813 return false; 2814 } 2815 } 2816 2817 @Override 2818 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 2819 if (mCustomSelectionActionModeCallback != null) { 2820 return mCustomSelectionActionModeCallback.onPrepareActionMode(mode, menu); 2821 } 2822 return true; 2823 } 2824 2825 @Override 2826 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 2827 if (mCustomSelectionActionModeCallback != null && 2828 mCustomSelectionActionModeCallback.onActionItemClicked(mode, item)) { 2829 return true; 2830 } 2831 return mTextView.onTextContextMenuItem(item.getItemId()); 2832 } 2833 2834 @Override 2835 public void onDestroyActionMode(ActionMode mode) { 2836 if (mCustomSelectionActionModeCallback != null) { 2837 mCustomSelectionActionModeCallback.onDestroyActionMode(mode); 2838 } 2839 2840 /* 2841 * If we're ending this mode because we're detaching from a window, 2842 * we still have selection state to preserve. Don't clear it, we'll 2843 * bring back the selection mode when (if) we get reattached. 2844 */ 2845 if (!mPreserveDetachedSelection) { 2846 Selection.setSelection((Spannable) mTextView.getText(), 2847 mTextView.getSelectionEnd()); 2848 mTextView.setHasTransientState(false); 2849 } 2850 2851 if (mSelectionModifierCursorController != null) { 2852 mSelectionModifierCursorController.hide(); 2853 } 2854 2855 mSelectionActionMode = null; 2856 } 2857 } 2858 2859 private class ActionPopupWindow extends PinnedPopupWindow implements OnClickListener { 2860 private static final int POPUP_TEXT_LAYOUT = 2861 com.android.internal.R.layout.text_edit_action_popup_text; 2862 private TextView mPasteTextView; 2863 private TextView mReplaceTextView; 2864 2865 @Override 2866 protected void createPopupWindow() { 2867 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 2868 com.android.internal.R.attr.textSelectHandleWindowStyle); 2869 mPopupWindow.setClippingEnabled(true); 2870 } 2871 2872 @Override 2873 protected void initContentView() { 2874 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 2875 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 2876 mContentView = linearLayout; 2877 mContentView.setBackgroundResource( 2878 com.android.internal.R.drawable.text_edit_paste_window); 2879 2880 LayoutInflater inflater = (LayoutInflater) mTextView.getContext(). 2881 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2882 2883 LayoutParams wrapContent = new LayoutParams( 2884 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 2885 2886 mPasteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2887 mPasteTextView.setLayoutParams(wrapContent); 2888 mContentView.addView(mPasteTextView); 2889 mPasteTextView.setText(com.android.internal.R.string.paste); 2890 mPasteTextView.setOnClickListener(this); 2891 2892 mReplaceTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2893 mReplaceTextView.setLayoutParams(wrapContent); 2894 mContentView.addView(mReplaceTextView); 2895 mReplaceTextView.setText(com.android.internal.R.string.replace); 2896 mReplaceTextView.setOnClickListener(this); 2897 } 2898 2899 @Override 2900 public void show() { 2901 boolean canPaste = mTextView.canPaste(); 2902 boolean canSuggest = mTextView.isSuggestionsEnabled() && isCursorInsideSuggestionSpan(); 2903 mPasteTextView.setVisibility(canPaste ? View.VISIBLE : View.GONE); 2904 mReplaceTextView.setVisibility(canSuggest ? View.VISIBLE : View.GONE); 2905 2906 if (!canPaste && !canSuggest) return; 2907 2908 super.show(); 2909 } 2910 2911 @Override 2912 public void onClick(View view) { 2913 if (view == mPasteTextView && mTextView.canPaste()) { 2914 mTextView.onTextContextMenuItem(TextView.ID_PASTE); 2915 hide(); 2916 } else if (view == mReplaceTextView) { 2917 int middle = (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 2918 stopSelectionActionMode(); 2919 Selection.setSelection((Spannable) mTextView.getText(), middle); 2920 showSuggestions(); 2921 } 2922 } 2923 2924 @Override 2925 protected int getTextOffset() { 2926 return (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 2927 } 2928 2929 @Override 2930 protected int getVerticalLocalPosition(int line) { 2931 return mTextView.getLayout().getLineTop(line) - mContentView.getMeasuredHeight(); 2932 } 2933 2934 @Override 2935 protected int clipVertically(int positionY) { 2936 if (positionY < 0) { 2937 final int offset = getTextOffset(); 2938 final Layout layout = mTextView.getLayout(); 2939 final int line = layout.getLineForOffset(offset); 2940 positionY += layout.getLineBottom(line) - layout.getLineTop(line); 2941 positionY += mContentView.getMeasuredHeight(); 2942 2943 // Assumes insertion and selection handles share the same height 2944 final Drawable handle = mTextView.getResources().getDrawable( 2945 mTextView.mTextSelectHandleRes); 2946 positionY += handle.getIntrinsicHeight(); 2947 } 2948 2949 return positionY; 2950 } 2951 } 2952 2953 private abstract class HandleView extends View implements TextViewPositionListener { 2954 protected Drawable mDrawable; 2955 protected Drawable mDrawableLtr; 2956 protected Drawable mDrawableRtl; 2957 private final PopupWindow mContainer; 2958 // Position with respect to the parent TextView 2959 private int mPositionX, mPositionY; 2960 private boolean mIsDragging; 2961 // Offset from touch position to mPosition 2962 private float mTouchToWindowOffsetX, mTouchToWindowOffsetY; 2963 protected int mHotspotX; 2964 // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up 2965 private float mTouchOffsetY; 2966 // Where the touch position should be on the handle to ensure a maximum cursor visibility 2967 private float mIdealVerticalOffset; 2968 // Parent's (TextView) previous position in window 2969 private int mLastParentX, mLastParentY; 2970 // Transient action popup window for Paste and Replace actions 2971 protected ActionPopupWindow mActionPopupWindow; 2972 // Previous text character offset 2973 private int mPreviousOffset = -1; 2974 // Previous text character offset 2975 private boolean mPositionHasChanged = true; 2976 // Used to delay the appearance of the action popup window 2977 private Runnable mActionPopupShower; 2978 2979 public HandleView(Drawable drawableLtr, Drawable drawableRtl) { 2980 super(mTextView.getContext()); 2981 mContainer = new PopupWindow(mTextView.getContext(), null, 2982 com.android.internal.R.attr.textSelectHandleWindowStyle); 2983 mContainer.setSplitTouchEnabled(true); 2984 mContainer.setClippingEnabled(false); 2985 mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 2986 mContainer.setContentView(this); 2987 2988 mDrawableLtr = drawableLtr; 2989 mDrawableRtl = drawableRtl; 2990 2991 updateDrawable(); 2992 2993 final int handleHeight = mDrawable.getIntrinsicHeight(); 2994 mTouchOffsetY = -0.3f * handleHeight; 2995 mIdealVerticalOffset = 0.7f * handleHeight; 2996 } 2997 2998 protected void updateDrawable() { 2999 final int offset = getCurrentCursorOffset(); 3000 final boolean isRtlCharAtOffset = mTextView.getLayout().isRtlCharAt(offset); 3001 mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr; 3002 mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset); 3003 } 3004 3005 protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun); 3006 3007 // Touch-up filter: number of previous positions remembered 3008 private static final int HISTORY_SIZE = 5; 3009 private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150; 3010 private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350; 3011 private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; 3012 private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; 3013 private int mPreviousOffsetIndex = 0; 3014 private int mNumberPreviousOffsets = 0; 3015 3016 private void startTouchUpFilter(int offset) { 3017 mNumberPreviousOffsets = 0; 3018 addPositionToTouchUpFilter(offset); 3019 } 3020 3021 private void addPositionToTouchUpFilter(int offset) { 3022 mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; 3023 mPreviousOffsets[mPreviousOffsetIndex] = offset; 3024 mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); 3025 mNumberPreviousOffsets++; 3026 } 3027 3028 private void filterOnTouchUp() { 3029 final long now = SystemClock.uptimeMillis(); 3030 int i = 0; 3031 int index = mPreviousOffsetIndex; 3032 final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); 3033 while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) { 3034 i++; 3035 index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; 3036 } 3037 3038 if (i > 0 && i < iMax && 3039 (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) { 3040 positionAtCursorOffset(mPreviousOffsets[index], false); 3041 } 3042 } 3043 3044 public boolean offsetHasBeenChanged() { 3045 return mNumberPreviousOffsets > 1; 3046 } 3047 3048 @Override 3049 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 3050 setMeasuredDimension(mDrawable.getIntrinsicWidth(), mDrawable.getIntrinsicHeight()); 3051 } 3052 3053 public void show() { 3054 if (isShowing()) return; 3055 3056 getPositionListener().addSubscriber(this, true /* local position may change */); 3057 3058 // Make sure the offset is always considered new, even when focusing at same position 3059 mPreviousOffset = -1; 3060 positionAtCursorOffset(getCurrentCursorOffset(), false); 3061 3062 hideActionPopupWindow(); 3063 } 3064 3065 protected void dismiss() { 3066 mIsDragging = false; 3067 mContainer.dismiss(); 3068 onDetached(); 3069 } 3070 3071 public void hide() { 3072 dismiss(); 3073 3074 getPositionListener().removeSubscriber(this); 3075 } 3076 3077 void showActionPopupWindow(int delay) { 3078 if (mActionPopupWindow == null) { 3079 mActionPopupWindow = new ActionPopupWindow(); 3080 } 3081 if (mActionPopupShower == null) { 3082 mActionPopupShower = new Runnable() { 3083 public void run() { 3084 mActionPopupWindow.show(); 3085 } 3086 }; 3087 } else { 3088 mTextView.removeCallbacks(mActionPopupShower); 3089 } 3090 mTextView.postDelayed(mActionPopupShower, delay); 3091 } 3092 3093 protected void hideActionPopupWindow() { 3094 if (mActionPopupShower != null) { 3095 mTextView.removeCallbacks(mActionPopupShower); 3096 } 3097 if (mActionPopupWindow != null) { 3098 mActionPopupWindow.hide(); 3099 } 3100 } 3101 3102 public boolean isShowing() { 3103 return mContainer.isShowing(); 3104 } 3105 3106 private boolean isVisible() { 3107 // Always show a dragging handle. 3108 if (mIsDragging) { 3109 return true; 3110 } 3111 3112 if (mTextView.isInBatchEditMode()) { 3113 return false; 3114 } 3115 3116 return isPositionVisible(mPositionX + mHotspotX, mPositionY); 3117 } 3118 3119 public abstract int getCurrentCursorOffset(); 3120 3121 protected abstract void updateSelection(int offset); 3122 3123 public abstract void updatePosition(float x, float y); 3124 3125 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 3126 // A HandleView relies on the layout, which may be nulled by external methods 3127 Layout layout = mTextView.getLayout(); 3128 if (layout == null) { 3129 // Will update controllers' state, hiding them and stopping selection mode if needed 3130 prepareCursorControllers(); 3131 return; 3132 } 3133 3134 boolean offsetChanged = offset != mPreviousOffset; 3135 if (offsetChanged || parentScrolled) { 3136 if (offsetChanged) { 3137 updateSelection(offset); 3138 addPositionToTouchUpFilter(offset); 3139 } 3140 final int line = layout.getLineForOffset(offset); 3141 3142 mPositionX = (int) (layout.getPrimaryHorizontal(offset) - 0.5f - mHotspotX); 3143 mPositionY = layout.getLineBottom(line); 3144 3145 // Take TextView's padding and scroll into account. 3146 mPositionX += mTextView.viewportToContentHorizontalOffset(); 3147 mPositionY += mTextView.viewportToContentVerticalOffset(); 3148 3149 mPreviousOffset = offset; 3150 mPositionHasChanged = true; 3151 } 3152 } 3153 3154 public void updatePosition(int parentPositionX, int parentPositionY, 3155 boolean parentPositionChanged, boolean parentScrolled) { 3156 positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled); 3157 if (parentPositionChanged || mPositionHasChanged) { 3158 if (mIsDragging) { 3159 // Update touchToWindow offset in case of parent scrolling while dragging 3160 if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) { 3161 mTouchToWindowOffsetX += parentPositionX - mLastParentX; 3162 mTouchToWindowOffsetY += parentPositionY - mLastParentY; 3163 mLastParentX = parentPositionX; 3164 mLastParentY = parentPositionY; 3165 } 3166 3167 onHandleMoved(); 3168 } 3169 3170 if (isVisible()) { 3171 final int positionX = parentPositionX + mPositionX; 3172 final int positionY = parentPositionY + mPositionY; 3173 if (isShowing()) { 3174 mContainer.update(positionX, positionY, -1, -1); 3175 } else { 3176 mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, 3177 positionX, positionY); 3178 } 3179 } else { 3180 if (isShowing()) { 3181 dismiss(); 3182 } 3183 } 3184 3185 mPositionHasChanged = false; 3186 } 3187 } 3188 3189 @Override 3190 protected void onDraw(Canvas c) { 3191 mDrawable.setBounds(0, 0, mRight - mLeft, mBottom - mTop); 3192 mDrawable.draw(c); 3193 } 3194 3195 @Override 3196 public boolean onTouchEvent(MotionEvent ev) { 3197 switch (ev.getActionMasked()) { 3198 case MotionEvent.ACTION_DOWN: { 3199 startTouchUpFilter(getCurrentCursorOffset()); 3200 mTouchToWindowOffsetX = ev.getRawX() - mPositionX; 3201 mTouchToWindowOffsetY = ev.getRawY() - mPositionY; 3202 3203 final PositionListener positionListener = getPositionListener(); 3204 mLastParentX = positionListener.getPositionX(); 3205 mLastParentY = positionListener.getPositionY(); 3206 mIsDragging = true; 3207 break; 3208 } 3209 3210 case MotionEvent.ACTION_MOVE: { 3211 final float rawX = ev.getRawX(); 3212 final float rawY = ev.getRawY(); 3213 3214 // Vertical hysteresis: vertical down movement tends to snap to ideal offset 3215 final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY; 3216 final float currentVerticalOffset = rawY - mPositionY - mLastParentY; 3217 float newVerticalOffset; 3218 if (previousVerticalOffset < mIdealVerticalOffset) { 3219 newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset); 3220 newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset); 3221 } else { 3222 newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset); 3223 newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset); 3224 } 3225 mTouchToWindowOffsetY = newVerticalOffset + mLastParentY; 3226 3227 final float newPosX = rawX - mTouchToWindowOffsetX + mHotspotX; 3228 final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY; 3229 3230 updatePosition(newPosX, newPosY); 3231 break; 3232 } 3233 3234 case MotionEvent.ACTION_UP: 3235 filterOnTouchUp(); 3236 mIsDragging = false; 3237 break; 3238 3239 case MotionEvent.ACTION_CANCEL: 3240 mIsDragging = false; 3241 break; 3242 } 3243 return true; 3244 } 3245 3246 public boolean isDragging() { 3247 return mIsDragging; 3248 } 3249 3250 void onHandleMoved() { 3251 hideActionPopupWindow(); 3252 } 3253 3254 public void onDetached() { 3255 hideActionPopupWindow(); 3256 } 3257 } 3258 3259 private class InsertionHandleView extends HandleView { 3260 private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000; 3261 private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds 3262 3263 // Used to detect taps on the insertion handle, which will affect the ActionPopupWindow 3264 private float mDownPositionX, mDownPositionY; 3265 private Runnable mHider; 3266 3267 public InsertionHandleView(Drawable drawable) { 3268 super(drawable, drawable); 3269 } 3270 3271 @Override 3272 public void show() { 3273 super.show(); 3274 3275 final long durationSinceCutOrCopy = 3276 SystemClock.uptimeMillis() - TextView.LAST_CUT_OR_COPY_TIME; 3277 if (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION) { 3278 showActionPopupWindow(0); 3279 } 3280 3281 hideAfterDelay(); 3282 } 3283 3284 public void showWithActionPopup() { 3285 show(); 3286 showActionPopupWindow(0); 3287 } 3288 3289 private void hideAfterDelay() { 3290 if (mHider == null) { 3291 mHider = new Runnable() { 3292 public void run() { 3293 hide(); 3294 } 3295 }; 3296 } else { 3297 removeHiderCallback(); 3298 } 3299 mTextView.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT); 3300 } 3301 3302 private void removeHiderCallback() { 3303 if (mHider != null) { 3304 mTextView.removeCallbacks(mHider); 3305 } 3306 } 3307 3308 @Override 3309 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3310 return drawable.getIntrinsicWidth() / 2; 3311 } 3312 3313 @Override 3314 public boolean onTouchEvent(MotionEvent ev) { 3315 final boolean result = super.onTouchEvent(ev); 3316 3317 switch (ev.getActionMasked()) { 3318 case MotionEvent.ACTION_DOWN: 3319 mDownPositionX = ev.getRawX(); 3320 mDownPositionY = ev.getRawY(); 3321 break; 3322 3323 case MotionEvent.ACTION_UP: 3324 if (!offsetHasBeenChanged()) { 3325 final float deltaX = mDownPositionX - ev.getRawX(); 3326 final float deltaY = mDownPositionY - ev.getRawY(); 3327 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3328 3329 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 3330 mTextView.getContext()); 3331 final int touchSlop = viewConfiguration.getScaledTouchSlop(); 3332 3333 if (distanceSquared < touchSlop * touchSlop) { 3334 if (mActionPopupWindow != null && mActionPopupWindow.isShowing()) { 3335 // Tapping on the handle dismisses the displayed action popup 3336 mActionPopupWindow.hide(); 3337 } else { 3338 showWithActionPopup(); 3339 } 3340 } 3341 } 3342 hideAfterDelay(); 3343 break; 3344 3345 case MotionEvent.ACTION_CANCEL: 3346 hideAfterDelay(); 3347 break; 3348 3349 default: 3350 break; 3351 } 3352 3353 return result; 3354 } 3355 3356 @Override 3357 public int getCurrentCursorOffset() { 3358 return mTextView.getSelectionStart(); 3359 } 3360 3361 @Override 3362 public void updateSelection(int offset) { 3363 Selection.setSelection((Spannable) mTextView.getText(), offset); 3364 } 3365 3366 @Override 3367 public void updatePosition(float x, float y) { 3368 positionAtCursorOffset(mTextView.getOffsetForPosition(x, y), false); 3369 } 3370 3371 @Override 3372 void onHandleMoved() { 3373 super.onHandleMoved(); 3374 removeHiderCallback(); 3375 } 3376 3377 @Override 3378 public void onDetached() { 3379 super.onDetached(); 3380 removeHiderCallback(); 3381 } 3382 } 3383 3384 private class SelectionStartHandleView extends HandleView { 3385 3386 public SelectionStartHandleView(Drawable drawableLtr, Drawable drawableRtl) { 3387 super(drawableLtr, drawableRtl); 3388 } 3389 3390 @Override 3391 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3392 if (isRtlRun) { 3393 return drawable.getIntrinsicWidth() / 4; 3394 } else { 3395 return (drawable.getIntrinsicWidth() * 3) / 4; 3396 } 3397 } 3398 3399 @Override 3400 public int getCurrentCursorOffset() { 3401 return mTextView.getSelectionStart(); 3402 } 3403 3404 @Override 3405 public void updateSelection(int offset) { 3406 Selection.setSelection((Spannable) mTextView.getText(), offset, 3407 mTextView.getSelectionEnd()); 3408 updateDrawable(); 3409 } 3410 3411 @Override 3412 public void updatePosition(float x, float y) { 3413 int offset = mTextView.getOffsetForPosition(x, y); 3414 3415 // Handles can not cross and selection is at least one character 3416 final int selectionEnd = mTextView.getSelectionEnd(); 3417 if (offset >= selectionEnd) offset = Math.max(0, selectionEnd - 1); 3418 3419 positionAtCursorOffset(offset, false); 3420 } 3421 3422 public ActionPopupWindow getActionPopupWindow() { 3423 return mActionPopupWindow; 3424 } 3425 } 3426 3427 private class SelectionEndHandleView extends HandleView { 3428 3429 public SelectionEndHandleView(Drawable drawableLtr, Drawable drawableRtl) { 3430 super(drawableLtr, drawableRtl); 3431 } 3432 3433 @Override 3434 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3435 if (isRtlRun) { 3436 return (drawable.getIntrinsicWidth() * 3) / 4; 3437 } else { 3438 return drawable.getIntrinsicWidth() / 4; 3439 } 3440 } 3441 3442 @Override 3443 public int getCurrentCursorOffset() { 3444 return mTextView.getSelectionEnd(); 3445 } 3446 3447 @Override 3448 public void updateSelection(int offset) { 3449 Selection.setSelection((Spannable) mTextView.getText(), 3450 mTextView.getSelectionStart(), offset); 3451 updateDrawable(); 3452 } 3453 3454 @Override 3455 public void updatePosition(float x, float y) { 3456 int offset = mTextView.getOffsetForPosition(x, y); 3457 3458 // Handles can not cross and selection is at least one character 3459 final int selectionStart = mTextView.getSelectionStart(); 3460 if (offset <= selectionStart) { 3461 offset = Math.min(selectionStart + 1, mTextView.getText().length()); 3462 } 3463 3464 positionAtCursorOffset(offset, false); 3465 } 3466 3467 public void setActionPopupWindow(ActionPopupWindow actionPopupWindow) { 3468 mActionPopupWindow = actionPopupWindow; 3469 } 3470 } 3471 3472 /** 3473 * A CursorController instance can be used to control a cursor in the text. 3474 */ 3475 private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { 3476 /** 3477 * Makes the cursor controller visible on screen. 3478 * See also {@link #hide()}. 3479 */ 3480 public void show(); 3481 3482 /** 3483 * Hide the cursor controller from screen. 3484 * See also {@link #show()}. 3485 */ 3486 public void hide(); 3487 3488 /** 3489 * Called when the view is detached from window. Perform house keeping task, such as 3490 * stopping Runnable thread that would otherwise keep a reference on the context, thus 3491 * preventing the activity from being recycled. 3492 */ 3493 public void onDetached(); 3494 } 3495 3496 private class InsertionPointCursorController implements CursorController { 3497 private InsertionHandleView mHandle; 3498 3499 public void show() { 3500 getHandle().show(); 3501 } 3502 3503 public void showWithActionPopup() { 3504 getHandle().showWithActionPopup(); 3505 } 3506 3507 public void hide() { 3508 if (mHandle != null) { 3509 mHandle.hide(); 3510 } 3511 } 3512 3513 public void onTouchModeChanged(boolean isInTouchMode) { 3514 if (!isInTouchMode) { 3515 hide(); 3516 } 3517 } 3518 3519 private InsertionHandleView getHandle() { 3520 if (mSelectHandleCenter == null) { 3521 mSelectHandleCenter = mTextView.getResources().getDrawable( 3522 mTextView.mTextSelectHandleRes); 3523 } 3524 if (mHandle == null) { 3525 mHandle = new InsertionHandleView(mSelectHandleCenter); 3526 } 3527 return mHandle; 3528 } 3529 3530 @Override 3531 public void onDetached() { 3532 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 3533 observer.removeOnTouchModeChangeListener(this); 3534 3535 if (mHandle != null) mHandle.onDetached(); 3536 } 3537 } 3538 3539 class SelectionModifierCursorController implements CursorController { 3540 private static final int DELAY_BEFORE_REPLACE_ACTION = 200; // milliseconds 3541 // The cursor controller handles, lazily created when shown. 3542 private SelectionStartHandleView mStartHandle; 3543 private SelectionEndHandleView mEndHandle; 3544 // The offsets of that last touch down event. Remembered to start selection there. 3545 private int mMinTouchOffset, mMaxTouchOffset; 3546 3547 // Double tap detection 3548 private long mPreviousTapUpTime = 0; 3549 private float mDownPositionX, mDownPositionY; 3550 private boolean mGestureStayedInTapRegion; 3551 3552 SelectionModifierCursorController() { 3553 resetTouchOffsets(); 3554 } 3555 3556 public void show() { 3557 if (mTextView.isInBatchEditMode()) { 3558 return; 3559 } 3560 initDrawables(); 3561 initHandles(); 3562 hideInsertionPointCursorController(); 3563 } 3564 3565 private void initDrawables() { 3566 if (mSelectHandleLeft == null) { 3567 mSelectHandleLeft = mTextView.getContext().getResources().getDrawable( 3568 mTextView.mTextSelectHandleLeftRes); 3569 } 3570 if (mSelectHandleRight == null) { 3571 mSelectHandleRight = mTextView.getContext().getResources().getDrawable( 3572 mTextView.mTextSelectHandleRightRes); 3573 } 3574 } 3575 3576 private void initHandles() { 3577 // Lazy object creation has to be done before updatePosition() is called. 3578 if (mStartHandle == null) { 3579 mStartHandle = new SelectionStartHandleView(mSelectHandleLeft, mSelectHandleRight); 3580 } 3581 if (mEndHandle == null) { 3582 mEndHandle = new SelectionEndHandleView(mSelectHandleRight, mSelectHandleLeft); 3583 } 3584 3585 mStartHandle.show(); 3586 mEndHandle.show(); 3587 3588 // Make sure both left and right handles share the same ActionPopupWindow (so that 3589 // moving any of the handles hides the action popup). 3590 mStartHandle.showActionPopupWindow(DELAY_BEFORE_REPLACE_ACTION); 3591 mEndHandle.setActionPopupWindow(mStartHandle.getActionPopupWindow()); 3592 3593 hideInsertionPointCursorController(); 3594 } 3595 3596 public void hide() { 3597 if (mStartHandle != null) mStartHandle.hide(); 3598 if (mEndHandle != null) mEndHandle.hide(); 3599 } 3600 3601 public void onTouchEvent(MotionEvent event) { 3602 // This is done even when the View does not have focus, so that long presses can start 3603 // selection and tap can move cursor from this tap position. 3604 switch (event.getActionMasked()) { 3605 case MotionEvent.ACTION_DOWN: 3606 final float x = event.getX(); 3607 final float y = event.getY(); 3608 3609 // Remember finger down position, to be able to start selection from there 3610 mMinTouchOffset = mMaxTouchOffset = mTextView.getOffsetForPosition(x, y); 3611 3612 // Double tap detection 3613 if (mGestureStayedInTapRegion) { 3614 long duration = SystemClock.uptimeMillis() - mPreviousTapUpTime; 3615 if (duration <= ViewConfiguration.getDoubleTapTimeout()) { 3616 final float deltaX = x - mDownPositionX; 3617 final float deltaY = y - mDownPositionY; 3618 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3619 3620 ViewConfiguration viewConfiguration = ViewConfiguration.get( 3621 mTextView.getContext()); 3622 int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop(); 3623 boolean stayedInArea = distanceSquared < doubleTapSlop * doubleTapSlop; 3624 3625 if (stayedInArea && isPositionOnText(x, y)) { 3626 startSelectionActionMode(); 3627 mDiscardNextActionUp = true; 3628 } 3629 } 3630 } 3631 3632 mDownPositionX = x; 3633 mDownPositionY = y; 3634 mGestureStayedInTapRegion = true; 3635 break; 3636 3637 case MotionEvent.ACTION_POINTER_DOWN: 3638 case MotionEvent.ACTION_POINTER_UP: 3639 // Handle multi-point gestures. Keep min and max offset positions. 3640 // Only activated for devices that correctly handle multi-touch. 3641 if (mTextView.getContext().getPackageManager().hasSystemFeature( 3642 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { 3643 updateMinAndMaxOffsets(event); 3644 } 3645 break; 3646 3647 case MotionEvent.ACTION_MOVE: 3648 if (mGestureStayedInTapRegion) { 3649 final float deltaX = event.getX() - mDownPositionX; 3650 final float deltaY = event.getY() - mDownPositionY; 3651 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3652 3653 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 3654 mTextView.getContext()); 3655 int doubleTapTouchSlop = viewConfiguration.getScaledDoubleTapTouchSlop(); 3656 3657 if (distanceSquared > doubleTapTouchSlop * doubleTapTouchSlop) { 3658 mGestureStayedInTapRegion = false; 3659 } 3660 } 3661 break; 3662 3663 case MotionEvent.ACTION_UP: 3664 mPreviousTapUpTime = SystemClock.uptimeMillis(); 3665 break; 3666 } 3667 } 3668 3669 /** 3670 * @param event 3671 */ 3672 private void updateMinAndMaxOffsets(MotionEvent event) { 3673 int pointerCount = event.getPointerCount(); 3674 for (int index = 0; index < pointerCount; index++) { 3675 int offset = mTextView.getOffsetForPosition(event.getX(index), event.getY(index)); 3676 if (offset < mMinTouchOffset) mMinTouchOffset = offset; 3677 if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; 3678 } 3679 } 3680 3681 public int getMinTouchOffset() { 3682 return mMinTouchOffset; 3683 } 3684 3685 public int getMaxTouchOffset() { 3686 return mMaxTouchOffset; 3687 } 3688 3689 public void resetTouchOffsets() { 3690 mMinTouchOffset = mMaxTouchOffset = -1; 3691 } 3692 3693 /** 3694 * @return true iff this controller is currently used to move the selection start. 3695 */ 3696 public boolean isSelectionStartDragged() { 3697 return mStartHandle != null && mStartHandle.isDragging(); 3698 } 3699 3700 public void onTouchModeChanged(boolean isInTouchMode) { 3701 if (!isInTouchMode) { 3702 hide(); 3703 } 3704 } 3705 3706 @Override 3707 public void onDetached() { 3708 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 3709 observer.removeOnTouchModeChangeListener(this); 3710 3711 if (mStartHandle != null) mStartHandle.onDetached(); 3712 if (mEndHandle != null) mEndHandle.onDetached(); 3713 } 3714 } 3715 3716 private class CorrectionHighlighter { 3717 private final Path mPath = new Path(); 3718 private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 3719 private int mStart, mEnd; 3720 private long mFadingStartTime; 3721 private RectF mTempRectF; 3722 private final static int FADE_OUT_DURATION = 400; 3723 3724 public CorrectionHighlighter() { 3725 mPaint.setCompatibilityScaling(mTextView.getResources().getCompatibilityInfo(). 3726 applicationScale); 3727 mPaint.setStyle(Paint.Style.FILL); 3728 } 3729 3730 public void highlight(CorrectionInfo info) { 3731 mStart = info.getOffset(); 3732 mEnd = mStart + info.getNewText().length(); 3733 mFadingStartTime = SystemClock.uptimeMillis(); 3734 3735 if (mStart < 0 || mEnd < 0) { 3736 stopAnimation(); 3737 } 3738 } 3739 3740 public void draw(Canvas canvas, int cursorOffsetVertical) { 3741 if (updatePath() && updatePaint()) { 3742 if (cursorOffsetVertical != 0) { 3743 canvas.translate(0, cursorOffsetVertical); 3744 } 3745 3746 canvas.drawPath(mPath, mPaint); 3747 3748 if (cursorOffsetVertical != 0) { 3749 canvas.translate(0, -cursorOffsetVertical); 3750 } 3751 invalidate(true); // TODO invalidate cursor region only 3752 } else { 3753 stopAnimation(); 3754 invalidate(false); // TODO invalidate cursor region only 3755 } 3756 } 3757 3758 private boolean updatePaint() { 3759 final long duration = SystemClock.uptimeMillis() - mFadingStartTime; 3760 if (duration > FADE_OUT_DURATION) return false; 3761 3762 final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; 3763 final int highlightColorAlpha = Color.alpha(mTextView.mHighlightColor); 3764 final int color = (mTextView.mHighlightColor & 0x00FFFFFF) + 3765 ((int) (highlightColorAlpha * coef) << 24); 3766 mPaint.setColor(color); 3767 return true; 3768 } 3769 3770 private boolean updatePath() { 3771 final Layout layout = mTextView.getLayout(); 3772 if (layout == null) return false; 3773 3774 // Update in case text is edited while the animation is run 3775 final int length = mTextView.getText().length(); 3776 int start = Math.min(length, mStart); 3777 int end = Math.min(length, mEnd); 3778 3779 mPath.reset(); 3780 layout.getSelectionPath(start, end, mPath); 3781 return true; 3782 } 3783 3784 private void invalidate(boolean delayed) { 3785 if (mTextView.getLayout() == null) return; 3786 3787 if (mTempRectF == null) mTempRectF = new RectF(); 3788 mPath.computeBounds(mTempRectF, false); 3789 3790 int left = mTextView.getCompoundPaddingLeft(); 3791 int top = mTextView.getExtendedPaddingTop() + mTextView.getVerticalOffset(true); 3792 3793 if (delayed) { 3794 mTextView.postInvalidateOnAnimation( 3795 left + (int) mTempRectF.left, top + (int) mTempRectF.top, 3796 left + (int) mTempRectF.right, top + (int) mTempRectF.bottom); 3797 } else { 3798 mTextView.postInvalidate((int) mTempRectF.left, (int) mTempRectF.top, 3799 (int) mTempRectF.right, (int) mTempRectF.bottom); 3800 } 3801 } 3802 3803 private void stopAnimation() { 3804 Editor.this.mCorrectionHighlighter = null; 3805 } 3806 } 3807 3808 private static class ErrorPopup extends PopupWindow { 3809 private boolean mAbove = false; 3810 private final TextView mView; 3811 private int mPopupInlineErrorBackgroundId = 0; 3812 private int mPopupInlineErrorAboveBackgroundId = 0; 3813 3814 ErrorPopup(TextView v, int width, int height) { 3815 super(v, width, height); 3816 mView = v; 3817 // Make sure the TextView has a background set as it will be used the first time it is 3818 // shown and positioned. Initialized with below background, which should have 3819 // dimensions identical to the above version for this to work (and is more likely). 3820 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 3821 com.android.internal.R.styleable.Theme_errorMessageBackground); 3822 mView.setBackgroundResource(mPopupInlineErrorBackgroundId); 3823 } 3824 3825 void fixDirection(boolean above) { 3826 mAbove = above; 3827 3828 if (above) { 3829 mPopupInlineErrorAboveBackgroundId = 3830 getResourceId(mPopupInlineErrorAboveBackgroundId, 3831 com.android.internal.R.styleable.Theme_errorMessageAboveBackground); 3832 } else { 3833 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 3834 com.android.internal.R.styleable.Theme_errorMessageBackground); 3835 } 3836 3837 mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId : 3838 mPopupInlineErrorBackgroundId); 3839 } 3840 3841 private int getResourceId(int currentId, int index) { 3842 if (currentId == 0) { 3843 TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( 3844 R.styleable.Theme); 3845 currentId = styledAttributes.getResourceId(index, 0); 3846 styledAttributes.recycle(); 3847 } 3848 return currentId; 3849 } 3850 3851 @Override 3852 public void update(int x, int y, int w, int h, boolean force) { 3853 super.update(x, y, w, h, force); 3854 3855 boolean above = isAboveAnchor(); 3856 if (above != mAbove) { 3857 fixDirection(above); 3858 } 3859 } 3860 } 3861 3862 static class InputContentType { 3863 int imeOptions = EditorInfo.IME_NULL; 3864 String privateImeOptions; 3865 CharSequence imeActionLabel; 3866 int imeActionId; 3867 Bundle extras; 3868 OnEditorActionListener onEditorActionListener; 3869 boolean enterDown; 3870 } 3871 3872 static class InputMethodState { 3873 Rect mCursorRectInWindow = new Rect(); 3874 RectF mTmpRectF = new RectF(); 3875 float[] mTmpOffset = new float[2]; 3876 ExtractedTextRequest mExtractedTextRequest; 3877 final ExtractedText mExtractedText = new ExtractedText(); 3878 int mBatchEditNesting; 3879 boolean mCursorChanged; 3880 boolean mSelectionModeChanged; 3881 boolean mContentChanged; 3882 int mChangedStart, mChangedEnd, mChangedDelta; 3883 } 3884 3885 /** 3886 * @hide 3887 */ 3888 public static class UserDictionaryListener extends Handler { 3889 public TextView mTextView; 3890 public String mOriginalWord; 3891 public int mWordStart; 3892 public int mWordEnd; 3893 3894 public void waitForUserDictionaryAdded( 3895 TextView tv, String originalWord, int spanStart, int spanEnd) { 3896 mTextView = tv; 3897 mOriginalWord = originalWord; 3898 mWordStart = spanStart; 3899 mWordEnd = spanEnd; 3900 } 3901 3902 @Override 3903 public void handleMessage(Message msg) { 3904 switch(msg.what) { 3905 case 0: /* CODE_WORD_ADDED */ 3906 case 2: /* CODE_ALREADY_PRESENT */ 3907 if (!(msg.obj instanceof Bundle)) { 3908 Log.w(TAG, "Illegal message. Abort handling onUserDictionaryAdded."); 3909 return; 3910 } 3911 final Bundle bundle = (Bundle)msg.obj; 3912 final String originalWord = bundle.getString("originalWord"); 3913 final String addedWord = bundle.getString("word"); 3914 onUserDictionaryAdded(originalWord, addedWord); 3915 return; 3916 default: 3917 return; 3918 } 3919 } 3920 3921 private void onUserDictionaryAdded(String originalWord, String addedWord) { 3922 if (TextUtils.isEmpty(mOriginalWord) || TextUtils.isEmpty(addedWord)) { 3923 return; 3924 } 3925 if (mWordStart < 0 || mWordEnd >= mTextView.length()) { 3926 return; 3927 } 3928 if (!mOriginalWord.equals(originalWord)) { 3929 return; 3930 } 3931 if (originalWord.equals(addedWord)) { 3932 return; 3933 } 3934 final Editable editable = (Editable) mTextView.getText(); 3935 final String currentWord = editable.toString().substring(mWordStart, mWordEnd); 3936 if (!currentWord.equals(originalWord)) { 3937 return; 3938 } 3939 mTextView.replaceText_internal(mWordStart, mWordEnd, addedWord); 3940 // Move cursor at the end of the replaced word 3941 final int newCursorPosition = mWordStart + addedWord.length(); 3942 mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); 3943 } 3944 } 3945} 3946