1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.widget; 18 19 import com.android.internal.util.ArrayUtils; 20 import com.android.internal.widget.EditableInputConnection; 21 22 import android.R; 23 import android.content.ClipData; 24 import android.content.ClipData.Item; 25 import android.content.Context; 26 import android.content.Intent; 27 import android.content.pm.PackageManager; 28 import android.content.res.TypedArray; 29 import android.graphics.Canvas; 30 import android.graphics.Color; 31 import android.graphics.Paint; 32 import android.graphics.Path; 33 import android.graphics.Rect; 34 import android.graphics.RectF; 35 import android.graphics.drawable.Drawable; 36 import android.inputmethodservice.ExtractEditText; 37 import android.os.Bundle; 38 import android.os.Handler; 39 import android.os.SystemClock; 40 import android.provider.Settings; 41 import android.text.DynamicLayout; 42 import android.text.Editable; 43 import android.text.InputType; 44 import android.text.Layout; 45 import android.text.ParcelableSpan; 46 import android.text.Selection; 47 import android.text.SpanWatcher; 48 import android.text.Spannable; 49 import android.text.SpannableStringBuilder; 50 import android.text.Spanned; 51 import android.text.StaticLayout; 52 import android.text.TextUtils; 53 import android.text.method.KeyListener; 54 import android.text.method.MetaKeyKeyListener; 55 import android.text.method.MovementMethod; 56 import android.text.method.PasswordTransformationMethod; 57 import android.text.method.WordIterator; 58 import android.text.style.EasyEditSpan; 59 import android.text.style.SuggestionRangeSpan; 60 import android.text.style.SuggestionSpan; 61 import android.text.style.TextAppearanceSpan; 62 import android.text.style.URLSpan; 63 import android.util.DisplayMetrics; 64 import android.util.Log; 65 import android.view.ActionMode; 66 import android.view.ActionMode.Callback; 67 import android.view.DisplayList; 68 import android.view.DragEvent; 69 import android.view.Gravity; 70 import android.view.HardwareCanvas; 71 import android.view.LayoutInflater; 72 import android.view.Menu; 73 import android.view.MenuItem; 74 import android.view.MotionEvent; 75 import android.view.View; 76 import android.view.View.DragShadowBuilder; 77 import android.view.View.OnClickListener; 78 import android.view.ViewConfiguration; 79 import android.view.ViewGroup; 80 import android.view.ViewGroup.LayoutParams; 81 import android.view.ViewParent; 82 import android.view.ViewTreeObserver; 83 import android.view.WindowManager; 84 import android.view.inputmethod.CorrectionInfo; 85 import android.view.inputmethod.EditorInfo; 86 import android.view.inputmethod.ExtractedText; 87 import android.view.inputmethod.ExtractedTextRequest; 88 import android.view.inputmethod.InputConnection; 89 import android.view.inputmethod.InputMethodManager; 90 import android.widget.AdapterView.OnItemClickListener; 91 import android.widget.Editor.InputContentType; 92 import android.widget.Editor.InputMethodState; 93 import android.widget.Editor.SelectionModifierCursorController; 94 import android.widget.TextView.Drawables; 95 import android.widget.TextView.OnEditorActionListener; 96 97 import java.text.BreakIterator; 98 import java.util.Arrays; 99 import java.util.Comparator; 100 import java.util.HashMap; 101 102 /** 103 * Helper class used by TextView to handle editable text views. 104 * 105 * @hide 106 */ 107 public class Editor { 108 private static final String TAG = "Editor"; 109 110 static final int BLINK = 500; 111 private static final float[] TEMP_POSITION = new float[2]; 112 private static int DRAG_SHADOW_MAX_TEXT_LENGTH = 20; 113 114 // Cursor Controllers. 115 InsertionPointCursorController mInsertionPointCursorController; 116 SelectionModifierCursorController mSelectionModifierCursorController; 117 ActionMode mSelectionActionMode; 118 boolean mInsertionControllerEnabled; 119 boolean mSelectionControllerEnabled; 120 121 // Used to highlight a word when it is corrected by the IME 122 CorrectionHighlighter mCorrectionHighlighter; 123 124 InputContentType mInputContentType; 125 InputMethodState mInputMethodState; 126 127 DisplayList[] mTextDisplayLists; 128 129 boolean mFrozenWithFocus; 130 boolean mSelectionMoved; 131 boolean mTouchFocusSelected; 132 133 KeyListener mKeyListener; 134 int mInputType = EditorInfo.TYPE_NULL; 135 136 boolean mDiscardNextActionUp; 137 boolean mIgnoreActionUpEvent; 138 139 long mShowCursor; 140 Blink mBlink; 141 142 boolean mCursorVisible = true; 143 boolean mSelectAllOnFocus; 144 boolean mTextIsSelectable; 145 146 CharSequence mError; 147 boolean mErrorWasChanged; 148 ErrorPopup mErrorPopup; 149 /** 150 * This flag is set if the TextView tries to display an error before it 151 * is attached to the window (so its position is still unknown). 152 * It causes the error to be shown later, when onAttachedToWindow() 153 * is called. 154 */ 155 boolean mShowErrorAfterAttach; 156 157 boolean mInBatchEditControllers; 158 boolean mShowSoftInputOnFocus = true; 159 boolean mPreserveDetachedSelection; 160 boolean mTemporaryDetach; 161 162 SuggestionsPopupWindow mSuggestionsPopupWindow; 163 SuggestionRangeSpan mSuggestionRangeSpan; 164 Runnable mShowSuggestionRunnable; 165 166 final Drawable[] mCursorDrawable = new Drawable[2]; 167 int mCursorCount; // Current number of used mCursorDrawable: 0 (resource=0), 1 or 2 (split) 168 169 private Drawable mSelectHandleLeft; 170 private Drawable mSelectHandleRight; 171 private Drawable mSelectHandleCenter; 172 173 // Global listener that detects changes in the global position of the TextView 174 private PositionListener mPositionListener; 175 176 float mLastDownPositionX, mLastDownPositionY; 177 Callback mCustomSelectionActionModeCallback; 178 179 // Set when this TextView gained focus with some text selected. Will start selection mode. 180 boolean mCreatedWithASelection; 181 182 private EasyEditSpanController mEasyEditSpanController; 183 184 WordIterator mWordIterator; 185 SpellChecker mSpellChecker; 186 187 private Rect mTempRect; 188 189 private TextView mTextView; 190 191 Editor(TextView textView) { 192 mTextView = textView; 193 } 194 195 void onAttachedToWindow() { 196 if (mShowErrorAfterAttach) { 197 showError(); 198 mShowErrorAfterAttach = false; 199 } 200 mTemporaryDetach = false; 201 202 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 203 // No need to create the controller. 204 // The get method will add the listener on controller creation. 205 if (mInsertionPointCursorController != null) { 206 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 207 } 208 if (mSelectionModifierCursorController != null) { 209 mSelectionModifierCursorController.resetTouchOffsets(); 210 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 211 } 212 updateSpellCheckSpans(0, mTextView.getText().length(), 213 true /* create the spell checker if needed */); 214 215 if (mTextView.hasTransientState() && 216 mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 217 // Since transient state is reference counted make sure it stays matched 218 // with our own calls to it for managing selection. 219 // The action mode callback will set this back again when/if the action mode starts. 220 mTextView.setHasTransientState(false); 221 222 // We had an active selection from before, start the selection mode. 223 startSelectionActionMode(); 224 } 225 } 226 227 void onDetachedFromWindow() { 228 if (mError != null) { 229 hideError(); 230 } 231 232 if (mBlink != null) { 233 mBlink.removeCallbacks(mBlink); 234 } 235 236 if (mInsertionPointCursorController != null) { 237 mInsertionPointCursorController.onDetached(); 238 } 239 240 if (mSelectionModifierCursorController != null) { 241 mSelectionModifierCursorController.onDetached(); 242 } 243 244 if (mShowSuggestionRunnable != null) { 245 mTextView.removeCallbacks(mShowSuggestionRunnable); 246 } 247 248 invalidateTextDisplayList(); 249 250 if (mSpellChecker != null) { 251 mSpellChecker.closeSession(); 252 // Forces the creation of a new SpellChecker next time this window is created. 253 // Will handle the cases where the settings has been changed in the meantime. 254 mSpellChecker = null; 255 } 256 257 mPreserveDetachedSelection = true; 258 hideControllers(); 259 mPreserveDetachedSelection = false; 260 mTemporaryDetach = false; 261 } 262 263 private void showError() { 264 if (mTextView.getWindowToken() == null) { 265 mShowErrorAfterAttach = true; 266 return; 267 } 268 269 if (mErrorPopup == null) { 270 LayoutInflater inflater = LayoutInflater.from(mTextView.getContext()); 271 final TextView err = (TextView) inflater.inflate( 272 com.android.internal.R.layout.textview_hint, null); 273 274 final float scale = mTextView.getResources().getDisplayMetrics().density; 275 mErrorPopup = new ErrorPopup(err, (int)(200 * scale + 0.5f), (int)(50 * scale + 0.5f)); 276 mErrorPopup.setFocusable(false); 277 // The user is entering text, so the input method is needed. We 278 // don't want the popup to be displayed on top of it. 279 mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); 280 } 281 282 TextView tv = (TextView) mErrorPopup.getContentView(); 283 chooseSize(mErrorPopup, mError, tv); 284 tv.setText(mError); 285 286 mErrorPopup.showAsDropDown(mTextView, getErrorX(), getErrorY()); 287 mErrorPopup.fixDirection(mErrorPopup.isAboveAnchor()); 288 } 289 290 public void setError(CharSequence error, Drawable icon) { 291 mError = TextUtils.stringOrSpannedString(error); 292 mErrorWasChanged = true; 293 final Drawables dr = mTextView.mDrawables; 294 if (dr != null) { 295 switch (mTextView.getResolvedLayoutDirection()) { 296 default: 297 case View.LAYOUT_DIRECTION_LTR: 298 mTextView.setCompoundDrawables(dr.mDrawableLeft, dr.mDrawableTop, icon, 299 dr.mDrawableBottom); 300 break; 301 case View.LAYOUT_DIRECTION_RTL: 302 mTextView.setCompoundDrawables(icon, dr.mDrawableTop, dr.mDrawableRight, 303 dr.mDrawableBottom); 304 break; 305 } 306 } else { 307 mTextView.setCompoundDrawables(null, null, icon, null); 308 } 309 310 if (mError == null) { 311 if (mErrorPopup != null) { 312 if (mErrorPopup.isShowing()) { 313 mErrorPopup.dismiss(); 314 } 315 316 mErrorPopup = null; 317 } 318 } else { 319 if (mTextView.isFocused()) { 320 showError(); 321 } 322 } 323 } 324 325 private void hideError() { 326 if (mErrorPopup != null) { 327 if (mErrorPopup.isShowing()) { 328 mErrorPopup.dismiss(); 329 } 330 } 331 332 mShowErrorAfterAttach = false; 333 } 334 335 /** 336 * Returns the Y offset to make the pointy top of the error point 337 * at the middle of the error icon. 338 */ 339 private int getErrorX() { 340 /* 341 * The "25" is the distance between the point and the right edge 342 * of the background 343 */ 344 final float scale = mTextView.getResources().getDisplayMetrics().density; 345 346 final Drawables dr = mTextView.mDrawables; 347 return mTextView.getWidth() - mErrorPopup.getWidth() - mTextView.getPaddingRight() - 348 (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f); 349 } 350 351 /** 352 * Returns the Y offset to make the pointy top of the error point 353 * at the bottom of the error icon. 354 */ 355 private int getErrorY() { 356 /* 357 * Compound, not extended, because the icon is not clipped 358 * if the text height is smaller. 359 */ 360 final int compoundPaddingTop = mTextView.getCompoundPaddingTop(); 361 int vspace = mTextView.getBottom() - mTextView.getTop() - 362 mTextView.getCompoundPaddingBottom() - compoundPaddingTop; 363 364 final Drawables dr = mTextView.mDrawables; 365 int icontop = compoundPaddingTop + 366 (vspace - (dr != null ? dr.mDrawableHeightRight : 0)) / 2; 367 368 /* 369 * The "2" is the distance between the point and the top edge 370 * of the background. 371 */ 372 final float scale = mTextView.getResources().getDisplayMetrics().density; 373 return icontop + (dr != null ? dr.mDrawableHeightRight : 0) - mTextView.getHeight() - 374 (int) (2 * scale + 0.5f); 375 } 376 377 void createInputContentTypeIfNeeded() { 378 if (mInputContentType == null) { 379 mInputContentType = new InputContentType(); 380 } 381 } 382 383 void createInputMethodStateIfNeeded() { 384 if (mInputMethodState == null) { 385 mInputMethodState = new InputMethodState(); 386 } 387 } 388 389 boolean isCursorVisible() { 390 // The default value is true, even when there is no associated Editor 391 return mCursorVisible && mTextView.isTextEditable(); 392 } 393 394 void prepareCursorControllers() { 395 boolean windowSupportsHandles = false; 396 397 ViewGroup.LayoutParams params = mTextView.getRootView().getLayoutParams(); 398 if (params instanceof WindowManager.LayoutParams) { 399 WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params; 400 windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW 401 || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW; 402 } 403 404 boolean enabled = windowSupportsHandles && mTextView.getLayout() != null; 405 mInsertionControllerEnabled = enabled && isCursorVisible(); 406 mSelectionControllerEnabled = enabled && mTextView.textCanBeSelected(); 407 408 if (!mInsertionControllerEnabled) { 409 hideInsertionPointCursorController(); 410 if (mInsertionPointCursorController != null) { 411 mInsertionPointCursorController.onDetached(); 412 mInsertionPointCursorController = null; 413 } 414 } 415 416 if (!mSelectionControllerEnabled) { 417 stopSelectionActionMode(); 418 if (mSelectionModifierCursorController != null) { 419 mSelectionModifierCursorController.onDetached(); 420 mSelectionModifierCursorController = null; 421 } 422 } 423 } 424 425 private void hideInsertionPointCursorController() { 426 if (mInsertionPointCursorController != null) { 427 mInsertionPointCursorController.hide(); 428 } 429 } 430 431 /** 432 * Hides the insertion controller and stops text selection mode, hiding the selection controller 433 */ 434 void hideControllers() { 435 hideCursorControllers(); 436 hideSpanControllers(); 437 } 438 439 private void hideSpanControllers() { 440 if (mEasyEditSpanController != null) { 441 mEasyEditSpanController.hide(); 442 } 443 } 444 445 private void hideCursorControllers() { 446 if (mSuggestionsPopupWindow != null && !mSuggestionsPopupWindow.isShowingUp()) { 447 // Should be done before hide insertion point controller since it triggers a show of it 448 mSuggestionsPopupWindow.hide(); 449 } 450 hideInsertionPointCursorController(); 451 stopSelectionActionMode(); 452 } 453 454 /** 455 * Create new SpellCheckSpans on the modified region. 456 */ 457 private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) { 458 if (mTextView.isTextEditable() && mTextView.isSuggestionsEnabled() && 459 !(mTextView instanceof ExtractEditText)) { 460 if (mSpellChecker == null && createSpellChecker) { 461 mSpellChecker = new SpellChecker(mTextView); 462 } 463 if (mSpellChecker != null) { 464 mSpellChecker.spellCheck(start, end); 465 } 466 } 467 } 468 469 void onScreenStateChanged(int screenState) { 470 switch (screenState) { 471 case View.SCREEN_STATE_ON: 472 resumeBlink(); 473 break; 474 case View.SCREEN_STATE_OFF: 475 suspendBlink(); 476 break; 477 } 478 } 479 480 private void suspendBlink() { 481 if (mBlink != null) { 482 mBlink.cancel(); 483 } 484 } 485 486 private void resumeBlink() { 487 if (mBlink != null) { 488 mBlink.uncancel(); 489 makeBlink(); 490 } 491 } 492 493 void adjustInputType(boolean password, boolean passwordInputType, 494 boolean webPasswordInputType, boolean numberPasswordInputType) { 495 // mInputType has been set from inputType, possibly modified by mInputMethod. 496 // Specialize mInputType to [web]password if we have a text class and the original input 497 // type was a password. 498 if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 499 if (password || passwordInputType) { 500 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 501 | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD; 502 } 503 if (webPasswordInputType) { 504 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 505 | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 506 } 507 } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) { 508 if (numberPasswordInputType) { 509 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 510 | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD; 511 } 512 } 513 } 514 515 private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) { 516 int wid = tv.getPaddingLeft() + tv.getPaddingRight(); 517 int ht = tv.getPaddingTop() + tv.getPaddingBottom(); 518 519 int defaultWidthInPixels = mTextView.getResources().getDimensionPixelSize( 520 com.android.internal.R.dimen.textview_error_popup_default_width); 521 Layout l = new StaticLayout(text, tv.getPaint(), defaultWidthInPixels, 522 Layout.Alignment.ALIGN_NORMAL, 1, 0, true); 523 float max = 0; 524 for (int i = 0; i < l.getLineCount(); i++) { 525 max = Math.max(max, l.getLineWidth(i)); 526 } 527 528 /* 529 * Now set the popup size to be big enough for the text plus the border capped 530 * to DEFAULT_MAX_POPUP_WIDTH 531 */ 532 pop.setWidth(wid + (int) Math.ceil(max)); 533 pop.setHeight(ht + l.getHeight()); 534 } 535 536 void setFrame() { 537 if (mErrorPopup != null) { 538 TextView tv = (TextView) mErrorPopup.getContentView(); 539 chooseSize(mErrorPopup, mError, tv); 540 mErrorPopup.update(mTextView, getErrorX(), getErrorY(), 541 mErrorPopup.getWidth(), mErrorPopup.getHeight()); 542 } 543 } 544 545 /** 546 * Unlike {@link TextView#textCanBeSelected()}, this method is based on the <i>current</i> state 547 * of the TextView. textCanBeSelected() has to be true (this is one of the conditions to have 548 * a selection controller (see {@link #prepareCursorControllers()}), but this is not sufficient. 549 */ 550 private boolean canSelectText() { 551 return hasSelectionController() && mTextView.getText().length() != 0; 552 } 553 554 /** 555 * It would be better to rely on the input type for everything. A password inputType should have 556 * a password transformation. We should hence use isPasswordInputType instead of this method. 557 * 558 * We should: 559 * - Call setInputType in setKeyListener instead of changing the input type directly (which 560 * would install the correct transformation). 561 * - Refuse the installation of a non-password transformation in setTransformation if the input 562 * type is password. 563 * 564 * However, this is like this for legacy reasons and we cannot break existing apps. This method 565 * is useful since it matches what the user can see (obfuscated text or not). 566 * 567 * @return true if the current transformation method is of the password type. 568 */ 569 private boolean hasPasswordTransformationMethod() { 570 return mTextView.getTransformationMethod() instanceof PasswordTransformationMethod; 571 } 572 573 /** 574 * Adjusts selection to the word under last touch offset. 575 * Return true if the operation was successfully performed. 576 */ 577 private boolean selectCurrentWord() { 578 if (!canSelectText()) { 579 return false; 580 } 581 582 if (hasPasswordTransformationMethod()) { 583 // Always select all on a password field. 584 // Cut/copy menu entries are not available for passwords, but being able to select all 585 // is however useful to delete or paste to replace the entire content. 586 return mTextView.selectAllText(); 587 } 588 589 int inputType = mTextView.getInputType(); 590 int klass = inputType & InputType.TYPE_MASK_CLASS; 591 int variation = inputType & InputType.TYPE_MASK_VARIATION; 592 593 // Specific text field types: select the entire text for these 594 if (klass == InputType.TYPE_CLASS_NUMBER || 595 klass == InputType.TYPE_CLASS_PHONE || 596 klass == InputType.TYPE_CLASS_DATETIME || 597 variation == InputType.TYPE_TEXT_VARIATION_URI || 598 variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS || 599 variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS || 600 variation == InputType.TYPE_TEXT_VARIATION_FILTER) { 601 return mTextView.selectAllText(); 602 } 603 604 long lastTouchOffsets = getLastTouchOffsets(); 605 final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 606 final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 607 608 // Safety check in case standard touch event handling has been bypassed 609 if (minOffset < 0 || minOffset >= mTextView.getText().length()) return false; 610 if (maxOffset < 0 || maxOffset >= mTextView.getText().length()) return false; 611 612 int selectionStart, selectionEnd; 613 614 // If a URLSpan (web address, email, phone...) is found at that position, select it. 615 URLSpan[] urlSpans = ((Spanned) mTextView.getText()). 616 getSpans(minOffset, maxOffset, URLSpan.class); 617 if (urlSpans.length >= 1) { 618 URLSpan urlSpan = urlSpans[0]; 619 selectionStart = ((Spanned) mTextView.getText()).getSpanStart(urlSpan); 620 selectionEnd = ((Spanned) mTextView.getText()).getSpanEnd(urlSpan); 621 } else { 622 final WordIterator wordIterator = getWordIterator(); 623 wordIterator.setCharSequence(mTextView.getText(), minOffset, maxOffset); 624 625 selectionStart = wordIterator.getBeginning(minOffset); 626 selectionEnd = wordIterator.getEnd(maxOffset); 627 628 if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE || 629 selectionStart == selectionEnd) { 630 // Possible when the word iterator does not properly handle the text's language 631 long range = getCharRange(minOffset); 632 selectionStart = TextUtils.unpackRangeStartFromLong(range); 633 selectionEnd = TextUtils.unpackRangeEndFromLong(range); 634 } 635 } 636 637 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 638 return selectionEnd > selectionStart; 639 } 640 641 void onLocaleChanged() { 642 // Will be re-created on demand in getWordIterator with the proper new locale 643 mWordIterator = null; 644 } 645 646 /** 647 * @hide 648 */ 649 public WordIterator getWordIterator() { 650 if (mWordIterator == null) { 651 mWordIterator = new WordIterator(mTextView.getTextServicesLocale()); 652 } 653 return mWordIterator; 654 } 655 656 private long getCharRange(int offset) { 657 final int textLength = mTextView.getText().length(); 658 if (offset + 1 < textLength) { 659 final char currentChar = mTextView.getText().charAt(offset); 660 final char nextChar = mTextView.getText().charAt(offset + 1); 661 if (Character.isSurrogatePair(currentChar, nextChar)) { 662 return TextUtils.packRangeInLong(offset, offset + 2); 663 } 664 } 665 if (offset < textLength) { 666 return TextUtils.packRangeInLong(offset, offset + 1); 667 } 668 if (offset - 2 >= 0) { 669 final char previousChar = mTextView.getText().charAt(offset - 1); 670 final char previousPreviousChar = mTextView.getText().charAt(offset - 2); 671 if (Character.isSurrogatePair(previousPreviousChar, previousChar)) { 672 return TextUtils.packRangeInLong(offset - 2, offset); 673 } 674 } 675 if (offset - 1 >= 0) { 676 return TextUtils.packRangeInLong(offset - 1, offset); 677 } 678 return TextUtils.packRangeInLong(offset, offset); 679 } 680 681 private boolean touchPositionIsInSelection() { 682 int selectionStart = mTextView.getSelectionStart(); 683 int selectionEnd = mTextView.getSelectionEnd(); 684 685 if (selectionStart == selectionEnd) { 686 return false; 687 } 688 689 if (selectionStart > selectionEnd) { 690 int tmp = selectionStart; 691 selectionStart = selectionEnd; 692 selectionEnd = tmp; 693 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 694 } 695 696 SelectionModifierCursorController selectionController = getSelectionController(); 697 int minOffset = selectionController.getMinTouchOffset(); 698 int maxOffset = selectionController.getMaxTouchOffset(); 699 700 return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); 701 } 702 703 private PositionListener getPositionListener() { 704 if (mPositionListener == null) { 705 mPositionListener = new PositionListener(); 706 } 707 return mPositionListener; 708 } 709 710 private interface TextViewPositionListener { 711 public void updatePosition(int parentPositionX, int parentPositionY, 712 boolean parentPositionChanged, boolean parentScrolled); 713 } 714 715 private boolean isPositionVisible(int positionX, int positionY) { 716 synchronized (TEMP_POSITION) { 717 final float[] position = TEMP_POSITION; 718 position[0] = positionX; 719 position[1] = positionY; 720 View view = mTextView; 721 722 while (view != null) { 723 if (view != mTextView) { 724 // Local scroll is already taken into account in positionX/Y 725 position[0] -= view.getScrollX(); 726 position[1] -= view.getScrollY(); 727 } 728 729 if (position[0] < 0 || position[1] < 0 || 730 position[0] > view.getWidth() || position[1] > view.getHeight()) { 731 return false; 732 } 733 734 if (!view.getMatrix().isIdentity()) { 735 view.getMatrix().mapPoints(position); 736 } 737 738 position[0] += view.getLeft(); 739 position[1] += view.getTop(); 740 741 final ViewParent parent = view.getParent(); 742 if (parent instanceof View) { 743 view = (View) parent; 744 } else { 745 // We've reached the ViewRoot, stop iterating 746 view = null; 747 } 748 } 749 } 750 751 // We've been able to walk up the view hierarchy and the position was never clipped 752 return true; 753 } 754 755 private boolean isOffsetVisible(int offset) { 756 Layout layout = mTextView.getLayout(); 757 final int line = layout.getLineForOffset(offset); 758 final int lineBottom = layout.getLineBottom(line); 759 final int primaryHorizontal = (int) layout.getPrimaryHorizontal(offset); 760 return isPositionVisible(primaryHorizontal + mTextView.viewportToContentHorizontalOffset(), 761 lineBottom + mTextView.viewportToContentVerticalOffset()); 762 } 763 764 /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed 765 * in the view. Returns false when the position is in the empty space of left/right of text. 766 */ 767 private boolean isPositionOnText(float x, float y) { 768 Layout layout = mTextView.getLayout(); 769 if (layout == null) return false; 770 771 final int line = mTextView.getLineAtCoordinate(y); 772 x = mTextView.convertToLocalHorizontalCoordinate(x); 773 774 if (x < layout.getLineLeft(line)) return false; 775 if (x > layout.getLineRight(line)) return false; 776 return true; 777 } 778 779 public boolean performLongClick(boolean handled) { 780 // Long press in empty space moves cursor and shows the Paste affordance if available. 781 if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) && 782 mInsertionControllerEnabled) { 783 final int offset = mTextView.getOffsetForPosition(mLastDownPositionX, 784 mLastDownPositionY); 785 stopSelectionActionMode(); 786 Selection.setSelection((Spannable) mTextView.getText(), offset); 787 getInsertionController().showWithActionPopup(); 788 handled = true; 789 } 790 791 if (!handled && mSelectionActionMode != null) { 792 if (touchPositionIsInSelection()) { 793 // Start a drag 794 final int start = mTextView.getSelectionStart(); 795 final int end = mTextView.getSelectionEnd(); 796 CharSequence selectedText = mTextView.getTransformedText(start, end); 797 ClipData data = ClipData.newPlainText(null, selectedText); 798 DragLocalState localState = new DragLocalState(mTextView, start, end); 799 mTextView.startDrag(data, getTextThumbnailBuilder(selectedText), localState, 0); 800 stopSelectionActionMode(); 801 } else { 802 getSelectionController().hide(); 803 selectCurrentWord(); 804 getSelectionController().show(); 805 } 806 handled = true; 807 } 808 809 // Start a new selection 810 if (!handled) { 811 handled = startSelectionActionMode(); 812 } 813 814 return handled; 815 } 816 817 private long getLastTouchOffsets() { 818 SelectionModifierCursorController selectionController = getSelectionController(); 819 final int minOffset = selectionController.getMinTouchOffset(); 820 final int maxOffset = selectionController.getMaxTouchOffset(); 821 return TextUtils.packRangeInLong(minOffset, maxOffset); 822 } 823 824 void onFocusChanged(boolean focused, int direction) { 825 mShowCursor = SystemClock.uptimeMillis(); 826 ensureEndedBatchEdit(); 827 828 if (focused) { 829 int selStart = mTextView.getSelectionStart(); 830 int selEnd = mTextView.getSelectionEnd(); 831 832 // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection 833 // mode for these, unless there was a specific selection already started. 834 final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 && 835 selEnd == mTextView.getText().length(); 836 837 mCreatedWithASelection = mFrozenWithFocus && mTextView.hasSelection() && 838 !isFocusHighlighted; 839 840 if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { 841 // If a tap was used to give focus to that view, move cursor at tap position. 842 // Has to be done before onTakeFocus, which can be overloaded. 843 final int lastTapPosition = getLastTapPosition(); 844 if (lastTapPosition >= 0) { 845 Selection.setSelection((Spannable) mTextView.getText(), lastTapPosition); 846 } 847 848 // Note this may have to be moved out of the Editor class 849 MovementMethod mMovement = mTextView.getMovementMethod(); 850 if (mMovement != null) { 851 mMovement.onTakeFocus(mTextView, (Spannable) mTextView.getText(), direction); 852 } 853 854 // The DecorView does not have focus when the 'Done' ExtractEditText button is 855 // pressed. Since it is the ViewAncestor's mView, it requests focus before 856 // ExtractEditText clears focus, which gives focus to the ExtractEditText. 857 // This special case ensure that we keep current selection in that case. 858 // It would be better to know why the DecorView does not have focus at that time. 859 if (((mTextView instanceof ExtractEditText) || mSelectionMoved) && 860 selStart >= 0 && selEnd >= 0) { 861 /* 862 * Someone intentionally set the selection, so let them 863 * do whatever it is that they wanted to do instead of 864 * the default on-focus behavior. We reset the selection 865 * here instead of just skipping the onTakeFocus() call 866 * because some movement methods do something other than 867 * just setting the selection in theirs and we still 868 * need to go through that path. 869 */ 870 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 871 } 872 873 if (mSelectAllOnFocus) { 874 mTextView.selectAllText(); 875 } 876 877 mTouchFocusSelected = true; 878 } 879 880 mFrozenWithFocus = false; 881 mSelectionMoved = false; 882 883 if (mError != null) { 884 showError(); 885 } 886 887 makeBlink(); 888 } else { 889 if (mError != null) { 890 hideError(); 891 } 892 // Don't leave us in the middle of a batch edit. 893 mTextView.onEndBatchEdit(); 894 895 if (mTextView instanceof ExtractEditText) { 896 // terminateTextSelectionMode removes selection, which we want to keep when 897 // ExtractEditText goes out of focus. 898 final int selStart = mTextView.getSelectionStart(); 899 final int selEnd = mTextView.getSelectionEnd(); 900 hideControllers(); 901 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 902 } else { 903 if (mTemporaryDetach) mPreserveDetachedSelection = true; 904 hideControllers(); 905 if (mTemporaryDetach) mPreserveDetachedSelection = false; 906 downgradeEasyCorrectionSpans(); 907 } 908 909 // No need to create the controller 910 if (mSelectionModifierCursorController != null) { 911 mSelectionModifierCursorController.resetTouchOffsets(); 912 } 913 } 914 } 915 916 /** 917 * Downgrades to simple suggestions all the easy correction spans that are not a spell check 918 * span. 919 */ 920 private void downgradeEasyCorrectionSpans() { 921 CharSequence text = mTextView.getText(); 922 if (text instanceof Spannable) { 923 Spannable spannable = (Spannable) text; 924 SuggestionSpan[] suggestionSpans = spannable.getSpans(0, 925 spannable.length(), SuggestionSpan.class); 926 for (int i = 0; i < suggestionSpans.length; i++) { 927 int flags = suggestionSpans[i].getFlags(); 928 if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0 929 && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) { 930 flags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 931 suggestionSpans[i].setFlags(flags); 932 } 933 } 934 } 935 } 936 937 void sendOnTextChanged(int start, int after) { 938 updateSpellCheckSpans(start, start + after, false); 939 940 // Hide the controllers as soon as text is modified (typing, procedural...) 941 // We do not hide the span controllers, since they can be added when a new text is 942 // inserted into the text view (voice IME). 943 hideCursorControllers(); 944 } 945 946 private int getLastTapPosition() { 947 // No need to create the controller at that point, no last tap position saved 948 if (mSelectionModifierCursorController != null) { 949 int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); 950 if (lastTapPosition >= 0) { 951 // Safety check, should not be possible. 952 if (lastTapPosition > mTextView.getText().length()) { 953 lastTapPosition = mTextView.getText().length(); 954 } 955 return lastTapPosition; 956 } 957 } 958 959 return -1; 960 } 961 962 void onWindowFocusChanged(boolean hasWindowFocus) { 963 if (hasWindowFocus) { 964 if (mBlink != null) { 965 mBlink.uncancel(); 966 makeBlink(); 967 } 968 } else { 969 if (mBlink != null) { 970 mBlink.cancel(); 971 } 972 if (mInputContentType != null) { 973 mInputContentType.enterDown = false; 974 } 975 // Order matters! Must be done before onParentLostFocus to rely on isShowingUp 976 hideControllers(); 977 if (mSuggestionsPopupWindow != null) { 978 mSuggestionsPopupWindow.onParentLostFocus(); 979 } 980 981 // Don't leave us in the middle of a batch edit. 982 mTextView.onEndBatchEdit(); 983 } 984 } 985 986 void onTouchEvent(MotionEvent event) { 987 if (hasSelectionController()) { 988 getSelectionController().onTouchEvent(event); 989 } 990 991 if (mShowSuggestionRunnable != null) { 992 mTextView.removeCallbacks(mShowSuggestionRunnable); 993 mShowSuggestionRunnable = null; 994 } 995 996 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 997 mLastDownPositionX = event.getX(); 998 mLastDownPositionY = event.getY(); 999 1000 // Reset this state; it will be re-set if super.onTouchEvent 1001 // causes focus to move to the view. 1002 mTouchFocusSelected = false; 1003 mIgnoreActionUpEvent = false; 1004 } 1005 } 1006 1007 public void beginBatchEdit() { 1008 mInBatchEditControllers = true; 1009 final InputMethodState ims = mInputMethodState; 1010 if (ims != null) { 1011 int nesting = ++ims.mBatchEditNesting; 1012 if (nesting == 1) { 1013 ims.mCursorChanged = false; 1014 ims.mChangedDelta = 0; 1015 if (ims.mContentChanged) { 1016 // We already have a pending change from somewhere else, 1017 // so turn this into a full update. 1018 ims.mChangedStart = 0; 1019 ims.mChangedEnd = mTextView.getText().length(); 1020 } else { 1021 ims.mChangedStart = EXTRACT_UNKNOWN; 1022 ims.mChangedEnd = EXTRACT_UNKNOWN; 1023 ims.mContentChanged = false; 1024 } 1025 mTextView.onBeginBatchEdit(); 1026 } 1027 } 1028 } 1029 1030 public void endBatchEdit() { 1031 mInBatchEditControllers = false; 1032 final InputMethodState ims = mInputMethodState; 1033 if (ims != null) { 1034 int nesting = --ims.mBatchEditNesting; 1035 if (nesting == 0) { 1036 finishBatchEdit(ims); 1037 } 1038 } 1039 } 1040 1041 void ensureEndedBatchEdit() { 1042 final InputMethodState ims = mInputMethodState; 1043 if (ims != null && ims.mBatchEditNesting != 0) { 1044 ims.mBatchEditNesting = 0; 1045 finishBatchEdit(ims); 1046 } 1047 } 1048 1049 void finishBatchEdit(final InputMethodState ims) { 1050 mTextView.onEndBatchEdit(); 1051 1052 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1053 mTextView.updateAfterEdit(); 1054 reportExtractedText(); 1055 } else if (ims.mCursorChanged) { 1056 // Cheezy way to get us to report the current cursor location. 1057 mTextView.invalidateCursor(); 1058 } 1059 } 1060 1061 static final int EXTRACT_NOTHING = -2; 1062 static final int EXTRACT_UNKNOWN = -1; 1063 1064 boolean extractText(ExtractedTextRequest request, ExtractedText outText) { 1065 return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, 1066 EXTRACT_UNKNOWN, outText); 1067 } 1068 1069 private boolean extractTextInternal(ExtractedTextRequest request, 1070 int partialStartOffset, int partialEndOffset, int delta, 1071 ExtractedText outText) { 1072 final CharSequence content = mTextView.getText(); 1073 if (content != null) { 1074 if (partialStartOffset != EXTRACT_NOTHING) { 1075 final int N = content.length(); 1076 if (partialStartOffset < 0) { 1077 outText.partialStartOffset = outText.partialEndOffset = -1; 1078 partialStartOffset = 0; 1079 partialEndOffset = N; 1080 } else { 1081 // Now use the delta to determine the actual amount of text 1082 // we need. 1083 partialEndOffset += delta; 1084 // Adjust offsets to ensure we contain full spans. 1085 if (content instanceof Spanned) { 1086 Spanned spanned = (Spanned)content; 1087 Object[] spans = spanned.getSpans(partialStartOffset, 1088 partialEndOffset, ParcelableSpan.class); 1089 int i = spans.length; 1090 while (i > 0) { 1091 i--; 1092 int j = spanned.getSpanStart(spans[i]); 1093 if (j < partialStartOffset) partialStartOffset = j; 1094 j = spanned.getSpanEnd(spans[i]); 1095 if (j > partialEndOffset) partialEndOffset = j; 1096 } 1097 } 1098 outText.partialStartOffset = partialStartOffset; 1099 outText.partialEndOffset = partialEndOffset - delta; 1100 1101 if (partialStartOffset > N) { 1102 partialStartOffset = N; 1103 } else if (partialStartOffset < 0) { 1104 partialStartOffset = 0; 1105 } 1106 if (partialEndOffset > N) { 1107 partialEndOffset = N; 1108 } else if (partialEndOffset < 0) { 1109 partialEndOffset = 0; 1110 } 1111 } 1112 if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) { 1113 outText.text = content.subSequence(partialStartOffset, 1114 partialEndOffset); 1115 } else { 1116 outText.text = TextUtils.substring(content, partialStartOffset, 1117 partialEndOffset); 1118 } 1119 } else { 1120 outText.partialStartOffset = 0; 1121 outText.partialEndOffset = 0; 1122 outText.text = ""; 1123 } 1124 outText.flags = 0; 1125 if (MetaKeyKeyListener.getMetaState(content, MetaKeyKeyListener.META_SELECTING) != 0) { 1126 outText.flags |= ExtractedText.FLAG_SELECTING; 1127 } 1128 if (mTextView.isSingleLine()) { 1129 outText.flags |= ExtractedText.FLAG_SINGLE_LINE; 1130 } 1131 outText.startOffset = 0; 1132 outText.selectionStart = mTextView.getSelectionStart(); 1133 outText.selectionEnd = mTextView.getSelectionEnd(); 1134 return true; 1135 } 1136 return false; 1137 } 1138 1139 boolean reportExtractedText() { 1140 final Editor.InputMethodState ims = mInputMethodState; 1141 if (ims != null) { 1142 final boolean contentChanged = ims.mContentChanged; 1143 if (contentChanged || ims.mSelectionModeChanged) { 1144 ims.mContentChanged = false; 1145 ims.mSelectionModeChanged = false; 1146 final ExtractedTextRequest req = ims.mExtractedTextRequest; 1147 if (req != null) { 1148 InputMethodManager imm = InputMethodManager.peekInstance(); 1149 if (imm != null) { 1150 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1151 "Retrieving extracted start=" + ims.mChangedStart + 1152 " end=" + ims.mChangedEnd + 1153 " delta=" + ims.mChangedDelta); 1154 if (ims.mChangedStart < 0 && !contentChanged) { 1155 ims.mChangedStart = EXTRACT_NOTHING; 1156 } 1157 if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, 1158 ims.mChangedDelta, ims.mExtractedText)) { 1159 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1160 "Reporting extracted start=" + 1161 ims.mExtractedText.partialStartOffset + 1162 " end=" + ims.mExtractedText.partialEndOffset + 1163 ": " + ims.mExtractedText.text); 1164 1165 imm.updateExtractedText(mTextView, req.token, ims.mExtractedText); 1166 ims.mChangedStart = EXTRACT_UNKNOWN; 1167 ims.mChangedEnd = EXTRACT_UNKNOWN; 1168 ims.mChangedDelta = 0; 1169 ims.mContentChanged = false; 1170 return true; 1171 } 1172 } 1173 } 1174 } 1175 } 1176 return false; 1177 } 1178 1179 void onDraw(Canvas canvas, Layout layout, Path highlight, Paint highlightPaint, 1180 int cursorOffsetVertical) { 1181 final int selectionStart = mTextView.getSelectionStart(); 1182 final int selectionEnd = mTextView.getSelectionEnd(); 1183 1184 final InputMethodState ims = mInputMethodState; 1185 if (ims != null && ims.mBatchEditNesting == 0) { 1186 InputMethodManager imm = InputMethodManager.peekInstance(); 1187 if (imm != null) { 1188 if (imm.isActive(mTextView)) { 1189 boolean reported = false; 1190 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1191 // We are in extract mode and the content has changed 1192 // in some way... just report complete new text to the 1193 // input method. 1194 reported = reportExtractedText(); 1195 } 1196 if (!reported && highlight != null) { 1197 int candStart = -1; 1198 int candEnd = -1; 1199 if (mTextView.getText() instanceof Spannable) { 1200 Spannable sp = (Spannable) mTextView.getText(); 1201 candStart = EditableInputConnection.getComposingSpanStart(sp); 1202 candEnd = EditableInputConnection.getComposingSpanEnd(sp); 1203 } 1204 imm.updateSelection(mTextView, 1205 selectionStart, selectionEnd, candStart, candEnd); 1206 } 1207 } 1208 1209 if (imm.isWatchingCursor(mTextView) && highlight != null) { 1210 highlight.computeBounds(ims.mTmpRectF, true); 1211 ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0; 1212 1213 canvas.getMatrix().mapPoints(ims.mTmpOffset); 1214 ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]); 1215 1216 ims.mTmpRectF.offset(0, cursorOffsetVertical); 1217 1218 ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5), 1219 (int)(ims.mTmpRectF.top + 0.5), 1220 (int)(ims.mTmpRectF.right + 0.5), 1221 (int)(ims.mTmpRectF.bottom + 0.5)); 1222 1223 imm.updateCursor(mTextView, 1224 ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top, 1225 ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom); 1226 } 1227 } 1228 } 1229 1230 if (mCorrectionHighlighter != null) { 1231 mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); 1232 } 1233 1234 if (highlight != null && selectionStart == selectionEnd && mCursorCount > 0) { 1235 drawCursor(canvas, cursorOffsetVertical); 1236 // Rely on the drawable entirely, do not draw the cursor line. 1237 // Has to be done after the IMM related code above which relies on the highlight. 1238 highlight = null; 1239 } 1240 1241 if (mTextView.canHaveDisplayList() && canvas.isHardwareAccelerated()) { 1242 drawHardwareAccelerated(canvas, layout, highlight, highlightPaint, 1243 cursorOffsetVertical); 1244 } else { 1245 layout.draw(canvas, highlight, highlightPaint, cursorOffsetVertical); 1246 } 1247 } 1248 1249 private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight, 1250 Paint highlightPaint, int cursorOffsetVertical) { 1251 final long lineRange = layout.getLineRangeForDraw(canvas); 1252 int firstLine = TextUtils.unpackRangeStartFromLong(lineRange); 1253 int lastLine = TextUtils.unpackRangeEndFromLong(lineRange); 1254 if (lastLine < 0) return; 1255 1256 layout.drawBackground(canvas, highlight, highlightPaint, cursorOffsetVertical, 1257 firstLine, lastLine); 1258 1259 if (layout instanceof DynamicLayout) { 1260 if (mTextDisplayLists == null) { 1261 mTextDisplayLists = new DisplayList[ArrayUtils.idealObjectArraySize(0)]; 1262 } 1263 1264 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1265 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1266 int[] blockIndices = dynamicLayout.getBlockIndices(); 1267 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1268 1269 int endOfPreviousBlock = -1; 1270 int searchStartIndex = 0; 1271 for (int i = 0; i < numberOfBlocks; i++) { 1272 int blockEndLine = blockEndLines[i]; 1273 int blockIndex = blockIndices[i]; 1274 1275 final boolean blockIsInvalid = blockIndex == DynamicLayout.INVALID_BLOCK_INDEX; 1276 if (blockIsInvalid) { 1277 blockIndex = getAvailableDisplayListIndex(blockIndices, numberOfBlocks, 1278 searchStartIndex); 1279 // Note how dynamic layout's internal block indices get updated from Editor 1280 blockIndices[i] = blockIndex; 1281 searchStartIndex = blockIndex + 1; 1282 } 1283 1284 DisplayList blockDisplayList = mTextDisplayLists[blockIndex]; 1285 if (blockDisplayList == null) { 1286 blockDisplayList = mTextDisplayLists[blockIndex] = 1287 mTextView.getHardwareRenderer().createDisplayList("Text " + blockIndex); 1288 } else { 1289 if (blockIsInvalid) blockDisplayList.invalidate(); 1290 } 1291 1292 if (!blockDisplayList.isValid()) { 1293 final int blockBeginLine = endOfPreviousBlock + 1; 1294 final int top = layout.getLineTop(blockBeginLine); 1295 final int bottom = layout.getLineBottom(blockEndLine); 1296 int left = 0; 1297 int right = mTextView.getWidth(); 1298 if (mTextView.getHorizontallyScrolling()) { 1299 float min = Float.MAX_VALUE; 1300 float max = Float.MIN_VALUE; 1301 for (int line = blockBeginLine; line <= blockEndLine; line++) { 1302 min = Math.min(min, layout.getLineLeft(line)); 1303 max = Math.max(max, layout.getLineRight(line)); 1304 } 1305 left = (int) min; 1306 right = (int) (max + 0.5f); 1307 } 1308 1309 final HardwareCanvas hardwareCanvas = blockDisplayList.start(); 1310 try { 1311 // Tighten the bounds of the viewport to the actual text size 1312 hardwareCanvas.setViewport(right - left, bottom - top); 1313 // The dirty rect should always be null for a display list 1314 hardwareCanvas.onPreDraw(null); 1315 // drawText is always relative to TextView's origin, this translation brings 1316 // this range of text back to the top left corner of the viewport 1317 hardwareCanvas.translate(-left, -top); 1318 layout.drawText(hardwareCanvas, blockBeginLine, blockEndLine); 1319 // No need to untranslate, previous context is popped after drawDisplayList 1320 } finally { 1321 hardwareCanvas.onPostDraw(); 1322 blockDisplayList.end(); 1323 blockDisplayList.setLeftTopRightBottom(left, top, right, bottom); 1324 // Same as drawDisplayList below, handled by our TextView's parent 1325 blockDisplayList.setClipChildren(false); 1326 } 1327 } 1328 1329 ((HardwareCanvas) canvas).drawDisplayList(blockDisplayList, null, 1330 0 /* no child clipping, our TextView parent enforces it */); 1331 1332 endOfPreviousBlock = blockEndLine; 1333 } 1334 } else { 1335 // Boring layout is used for empty and hint text 1336 layout.drawText(canvas, firstLine, lastLine); 1337 } 1338 } 1339 1340 private int getAvailableDisplayListIndex(int[] blockIndices, int numberOfBlocks, 1341 int searchStartIndex) { 1342 int length = mTextDisplayLists.length; 1343 for (int i = searchStartIndex; i < length; i++) { 1344 boolean blockIndexFound = false; 1345 for (int j = 0; j < numberOfBlocks; j++) { 1346 if (blockIndices[j] == i) { 1347 blockIndexFound = true; 1348 break; 1349 } 1350 } 1351 if (blockIndexFound) continue; 1352 return i; 1353 } 1354 1355 // No available index found, the pool has to grow 1356 int newSize = ArrayUtils.idealIntArraySize(length + 1); 1357 DisplayList[] displayLists = new DisplayList[newSize]; 1358 System.arraycopy(mTextDisplayLists, 0, displayLists, 0, length); 1359 mTextDisplayLists = displayLists; 1360 return length; 1361 } 1362 1363 private void drawCursor(Canvas canvas, int cursorOffsetVertical) { 1364 final boolean translate = cursorOffsetVertical != 0; 1365 if (translate) canvas.translate(0, cursorOffsetVertical); 1366 for (int i = 0; i < mCursorCount; i++) { 1367 mCursorDrawable[i].draw(canvas); 1368 } 1369 if (translate) canvas.translate(0, -cursorOffsetVertical); 1370 } 1371 1372 /** 1373 * Invalidates all the sub-display lists that overlap the specified character range 1374 */ 1375 void invalidateTextDisplayList(Layout layout, int start, int end) { 1376 if (mTextDisplayLists != null && layout instanceof DynamicLayout) { 1377 final int firstLine = layout.getLineForOffset(start); 1378 final int lastLine = layout.getLineForOffset(end); 1379 1380 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1381 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1382 int[] blockIndices = dynamicLayout.getBlockIndices(); 1383 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1384 1385 int i = 0; 1386 // Skip the blocks before firstLine 1387 while (i < numberOfBlocks) { 1388 if (blockEndLines[i] >= firstLine) break; 1389 i++; 1390 } 1391 1392 // Invalidate all subsequent blocks until lastLine is passed 1393 while (i < numberOfBlocks) { 1394 final int blockIndex = blockIndices[i]; 1395 if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX) { 1396 mTextDisplayLists[blockIndex].invalidate(); 1397 } 1398 if (blockEndLines[i] >= lastLine) break; 1399 i++; 1400 } 1401 } 1402 } 1403 1404 void invalidateTextDisplayList() { 1405 if (mTextDisplayLists != null) { 1406 for (int i = 0; i < mTextDisplayLists.length; i++) { 1407 if (mTextDisplayLists[i] != null) mTextDisplayLists[i].invalidate(); 1408 } 1409 } 1410 } 1411 1412 void updateCursorsPositions() { 1413 if (mTextView.mCursorDrawableRes == 0) { 1414 mCursorCount = 0; 1415 return; 1416 } 1417 1418 Layout layout = mTextView.getLayout(); 1419 Layout hintLayout = mTextView.getHintLayout(); 1420 final int offset = mTextView.getSelectionStart(); 1421 final int line = layout.getLineForOffset(offset); 1422 final int top = layout.getLineTop(line); 1423 final int bottom = layout.getLineTop(line + 1); 1424 1425 mCursorCount = layout.isLevelBoundary(offset) ? 2 : 1; 1426 1427 int middle = bottom; 1428 if (mCursorCount == 2) { 1429 // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)} 1430 middle = (top + bottom) >> 1; 1431 } 1432 1433 updateCursorPosition(0, top, middle, getPrimaryHorizontal(layout, hintLayout, offset)); 1434 1435 if (mCursorCount == 2) { 1436 updateCursorPosition(1, middle, bottom, layout.getSecondaryHorizontal(offset)); 1437 } 1438 } 1439 1440 private float getPrimaryHorizontal(Layout layout, Layout hintLayout, int offset) { 1441 if (TextUtils.isEmpty(layout.getText()) && 1442 hintLayout != null && 1443 !TextUtils.isEmpty(hintLayout.getText())) { 1444 return hintLayout.getPrimaryHorizontal(offset); 1445 } else { 1446 return layout.getPrimaryHorizontal(offset); 1447 } 1448 } 1449 1450 /** 1451 * @return true if the selection mode was actually started. 1452 */ 1453 boolean startSelectionActionMode() { 1454 if (mSelectionActionMode != null) { 1455 // Selection action mode is already started 1456 return false; 1457 } 1458 1459 if (!canSelectText() || !mTextView.requestFocus()) { 1460 Log.w(TextView.LOG_TAG, 1461 "TextView does not support text selection. Action mode cancelled."); 1462 return false; 1463 } 1464 1465 if (!mTextView.hasSelection()) { 1466 // There may already be a selection on device rotation 1467 if (!selectCurrentWord()) { 1468 // No word found under cursor or text selection not permitted. 1469 return false; 1470 } 1471 } 1472 1473 boolean willExtract = extractedTextModeWillBeStarted(); 1474 1475 // Do not start the action mode when extracted text will show up full screen, which would 1476 // immediately hide the newly created action bar and would be visually distracting. 1477 if (!willExtract) { 1478 ActionMode.Callback actionModeCallback = new SelectionActionModeCallback(); 1479 mSelectionActionMode = mTextView.startActionMode(actionModeCallback); 1480 } 1481 1482 final boolean selectionStarted = mSelectionActionMode != null || willExtract; 1483 if (selectionStarted && !mTextView.isTextSelectable() && mShowSoftInputOnFocus) { 1484 // Show the IME to be able to replace text, except when selecting non editable text. 1485 final InputMethodManager imm = InputMethodManager.peekInstance(); 1486 if (imm != null) { 1487 imm.showSoftInput(mTextView, 0, null); 1488 } 1489 } 1490 1491 return selectionStarted; 1492 } 1493 1494 private boolean extractedTextModeWillBeStarted() { 1495 if (!(mTextView instanceof ExtractEditText)) { 1496 final InputMethodManager imm = InputMethodManager.peekInstance(); 1497 return imm != null && imm.isFullscreenMode(); 1498 } 1499 return false; 1500 } 1501 1502 /** 1503 * @return <code>true</code> if the cursor/current selection overlaps a {@link SuggestionSpan}. 1504 */ 1505 private boolean isCursorInsideSuggestionSpan() { 1506 CharSequence text = mTextView.getText(); 1507 if (!(text instanceof Spannable)) return false; 1508 1509 SuggestionSpan[] suggestionSpans = ((Spannable) text).getSpans( 1510 mTextView.getSelectionStart(), mTextView.getSelectionEnd(), SuggestionSpan.class); 1511 return (suggestionSpans.length > 0); 1512 } 1513 1514 /** 1515 * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with 1516 * {@link SuggestionSpan#FLAG_EASY_CORRECT} set. 1517 */ 1518 private boolean isCursorInsideEasyCorrectionSpan() { 1519 Spannable spannable = (Spannable) mTextView.getText(); 1520 SuggestionSpan[] suggestionSpans = spannable.getSpans(mTextView.getSelectionStart(), 1521 mTextView.getSelectionEnd(), SuggestionSpan.class); 1522 for (int i = 0; i < suggestionSpans.length; i++) { 1523 if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) { 1524 return true; 1525 } 1526 } 1527 return false; 1528 } 1529 1530 void onTouchUpEvent(MotionEvent event) { 1531 boolean selectAllGotFocus = mSelectAllOnFocus && mTextView.didTouchFocusSelect(); 1532 hideControllers(); 1533 CharSequence text = mTextView.getText(); 1534 if (!selectAllGotFocus && text.length() > 0) { 1535 // Move cursor 1536 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 1537 Selection.setSelection((Spannable) text, offset); 1538 if (mSpellChecker != null) { 1539 // When the cursor moves, the word that was typed may need spell check 1540 mSpellChecker.onSelectionChanged(); 1541 } 1542 if (!extractedTextModeWillBeStarted()) { 1543 if (isCursorInsideEasyCorrectionSpan()) { 1544 mShowSuggestionRunnable = new Runnable() { 1545 public void run() { 1546 showSuggestions(); 1547 } 1548 }; 1549 // removeCallbacks is performed on every touch 1550 mTextView.postDelayed(mShowSuggestionRunnable, 1551 ViewConfiguration.getDoubleTapTimeout()); 1552 } else if (hasInsertionController()) { 1553 getInsertionController().show(); 1554 } 1555 } 1556 } 1557 } 1558 1559 protected void stopSelectionActionMode() { 1560 if (mSelectionActionMode != null) { 1561 // This will hide the mSelectionModifierCursorController 1562 mSelectionActionMode.finish(); 1563 } 1564 } 1565 1566 /** 1567 * @return True if this view supports insertion handles. 1568 */ 1569 boolean hasInsertionController() { 1570 return mInsertionControllerEnabled; 1571 } 1572 1573 /** 1574 * @return True if this view supports selection handles. 1575 */ 1576 boolean hasSelectionController() { 1577 return mSelectionControllerEnabled; 1578 } 1579 1580 InsertionPointCursorController getInsertionController() { 1581 if (!mInsertionControllerEnabled) { 1582 return null; 1583 } 1584 1585 if (mInsertionPointCursorController == null) { 1586 mInsertionPointCursorController = new InsertionPointCursorController(); 1587 1588 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 1589 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 1590 } 1591 1592 return mInsertionPointCursorController; 1593 } 1594 1595 SelectionModifierCursorController getSelectionController() { 1596 if (!mSelectionControllerEnabled) { 1597 return null; 1598 } 1599 1600 if (mSelectionModifierCursorController == null) { 1601 mSelectionModifierCursorController = new SelectionModifierCursorController(); 1602 1603 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 1604 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 1605 } 1606 1607 return mSelectionModifierCursorController; 1608 } 1609 1610 private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) { 1611 if (mCursorDrawable[cursorIndex] == null) 1612 mCursorDrawable[cursorIndex] = mTextView.getResources().getDrawable( 1613 mTextView.mCursorDrawableRes); 1614 1615 if (mTempRect == null) mTempRect = new Rect(); 1616 mCursorDrawable[cursorIndex].getPadding(mTempRect); 1617 final int width = mCursorDrawable[cursorIndex].getIntrinsicWidth(); 1618 horizontal = Math.max(0.5f, horizontal - 0.5f); 1619 final int left = (int) (horizontal) - mTempRect.left; 1620 mCursorDrawable[cursorIndex].setBounds(left, top - mTempRect.top, left + width, 1621 bottom + mTempRect.bottom); 1622 } 1623 1624 /** 1625 * Called by the framework in response to a text auto-correction (such as fixing a typo using a 1626 * a dictionnary) from the current input method, provided by it calling 1627 * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default 1628 * implementation flashes the background of the corrected word to provide feedback to the user. 1629 * 1630 * @param info The auto correct info about the text that was corrected. 1631 */ 1632 public void onCommitCorrection(CorrectionInfo info) { 1633 if (mCorrectionHighlighter == null) { 1634 mCorrectionHighlighter = new CorrectionHighlighter(); 1635 } else { 1636 mCorrectionHighlighter.invalidate(false); 1637 } 1638 1639 mCorrectionHighlighter.highlight(info); 1640 } 1641 1642 void showSuggestions() { 1643 if (mSuggestionsPopupWindow == null) { 1644 mSuggestionsPopupWindow = new SuggestionsPopupWindow(); 1645 } 1646 hideControllers(); 1647 mSuggestionsPopupWindow.show(); 1648 } 1649 1650 boolean areSuggestionsShown() { 1651 return mSuggestionsPopupWindow != null && mSuggestionsPopupWindow.isShowing(); 1652 } 1653 1654 void onScrollChanged() { 1655 if (mPositionListener != null) { 1656 mPositionListener.onScrollChanged(); 1657 } 1658 } 1659 1660 /** 1661 * @return True when the TextView isFocused and has a valid zero-length selection (cursor). 1662 */ 1663 private boolean shouldBlink() { 1664 if (!isCursorVisible() || !mTextView.isFocused()) return false; 1665 1666 final int start = mTextView.getSelectionStart(); 1667 if (start < 0) return false; 1668 1669 final int end = mTextView.getSelectionEnd(); 1670 if (end < 0) return false; 1671 1672 return start == end; 1673 } 1674 1675 void makeBlink() { 1676 if (shouldBlink()) { 1677 mShowCursor = SystemClock.uptimeMillis(); 1678 if (mBlink == null) mBlink = new Blink(); 1679 mBlink.removeCallbacks(mBlink); 1680 mBlink.postAtTime(mBlink, mShowCursor + BLINK); 1681 } else { 1682 if (mBlink != null) mBlink.removeCallbacks(mBlink); 1683 } 1684 } 1685 1686 private class Blink extends Handler implements Runnable { 1687 private boolean mCancelled; 1688 1689 public void run() { 1690 if (mCancelled) { 1691 return; 1692 } 1693 1694 removeCallbacks(Blink.this); 1695 1696 if (shouldBlink()) { 1697 if (mTextView.getLayout() != null) { 1698 mTextView.invalidateCursorPath(); 1699 } 1700 1701 postAtTime(this, SystemClock.uptimeMillis() + BLINK); 1702 } 1703 } 1704 1705 void cancel() { 1706 if (!mCancelled) { 1707 removeCallbacks(Blink.this); 1708 mCancelled = true; 1709 } 1710 } 1711 1712 void uncancel() { 1713 mCancelled = false; 1714 } 1715 } 1716 1717 private DragShadowBuilder getTextThumbnailBuilder(CharSequence text) { 1718 TextView shadowView = (TextView) View.inflate(mTextView.getContext(), 1719 com.android.internal.R.layout.text_drag_thumbnail, null); 1720 1721 if (shadowView == null) { 1722 throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); 1723 } 1724 1725 if (text.length() > DRAG_SHADOW_MAX_TEXT_LENGTH) { 1726 text = text.subSequence(0, DRAG_SHADOW_MAX_TEXT_LENGTH); 1727 } 1728 shadowView.setText(text); 1729 shadowView.setTextColor(mTextView.getTextColors()); 1730 1731 shadowView.setTextAppearance(mTextView.getContext(), R.styleable.Theme_textAppearanceLarge); 1732 shadowView.setGravity(Gravity.CENTER); 1733 1734 shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 1735 ViewGroup.LayoutParams.WRAP_CONTENT)); 1736 1737 final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); 1738 shadowView.measure(size, size); 1739 1740 shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight()); 1741 shadowView.invalidate(); 1742 return new DragShadowBuilder(shadowView); 1743 } 1744 1745 private static class DragLocalState { 1746 public TextView sourceTextView; 1747 public int start, end; 1748 1749 public DragLocalState(TextView sourceTextView, int start, int end) { 1750 this.sourceTextView = sourceTextView; 1751 this.start = start; 1752 this.end = end; 1753 } 1754 } 1755 1756 void onDrop(DragEvent event) { 1757 StringBuilder content = new StringBuilder(""); 1758 ClipData clipData = event.getClipData(); 1759 final int itemCount = clipData.getItemCount(); 1760 for (int i=0; i < itemCount; i++) { 1761 Item item = clipData.getItemAt(i); 1762 content.append(item.coerceToStyledText(mTextView.getContext())); 1763 } 1764 1765 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 1766 1767 Object localState = event.getLocalState(); 1768 DragLocalState dragLocalState = null; 1769 if (localState instanceof DragLocalState) { 1770 dragLocalState = (DragLocalState) localState; 1771 } 1772 boolean dragDropIntoItself = dragLocalState != null && 1773 dragLocalState.sourceTextView == mTextView; 1774 1775 if (dragDropIntoItself) { 1776 if (offset >= dragLocalState.start && offset < dragLocalState.end) { 1777 // A drop inside the original selection discards the drop. 1778 return; 1779 } 1780 } 1781 1782 final int originalLength = mTextView.getText().length(); 1783 long minMax = mTextView.prepareSpacesAroundPaste(offset, offset, content); 1784 int min = TextUtils.unpackRangeStartFromLong(minMax); 1785 int max = TextUtils.unpackRangeEndFromLong(minMax); 1786 1787 Selection.setSelection((Spannable) mTextView.getText(), max); 1788 mTextView.replaceText_internal(min, max, content); 1789 1790 if (dragDropIntoItself) { 1791 int dragSourceStart = dragLocalState.start; 1792 int dragSourceEnd = dragLocalState.end; 1793 if (max <= dragSourceStart) { 1794 // Inserting text before selection has shifted positions 1795 final int shift = mTextView.getText().length() - originalLength; 1796 dragSourceStart += shift; 1797 dragSourceEnd += shift; 1798 } 1799 1800 // Delete original selection 1801 mTextView.deleteText_internal(dragSourceStart, dragSourceEnd); 1802 1803 // Make sure we do not leave two adjacent spaces. 1804 CharSequence t = mTextView.getTransformedText(dragSourceStart - 1, dragSourceStart + 1); 1805 if ( (dragSourceStart == 0 || Character.isSpaceChar(t.charAt(0))) && 1806 (dragSourceStart == mTextView.getText().length() || 1807 Character.isSpaceChar(t.charAt(1))) ) { 1808 final int pos = dragSourceStart == mTextView.getText().length() ? 1809 dragSourceStart - 1 : dragSourceStart; 1810 mTextView.deleteText_internal(pos, pos + 1); 1811 } 1812 } 1813 } 1814 1815 public void addSpanWatchers(Spannable text) { 1816 final int textLength = text.length(); 1817 1818 if (mKeyListener != null) { 1819 text.setSpan(mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 1820 } 1821 1822 if (mEasyEditSpanController == null) { 1823 mEasyEditSpanController = new EasyEditSpanController(); 1824 } 1825 text.setSpan(mEasyEditSpanController, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 1826 } 1827 1828 /** 1829 * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related 1830 * pop-up should be displayed. 1831 */ 1832 class EasyEditSpanController implements SpanWatcher { 1833 1834 private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs 1835 1836 private EasyEditPopupWindow mPopupWindow; 1837 1838 private Runnable mHidePopup; 1839 1840 @Override 1841 public void onSpanAdded(Spannable text, Object span, int start, int end) { 1842 if (span instanceof EasyEditSpan) { 1843 if (mPopupWindow == null) { 1844 mPopupWindow = new EasyEditPopupWindow(); 1845 mHidePopup = new Runnable() { 1846 @Override 1847 public void run() { 1848 hide(); 1849 } 1850 }; 1851 } 1852 1853 // Make sure there is only at most one EasyEditSpan in the text 1854 if (mPopupWindow.mEasyEditSpan != null) { 1855 text.removeSpan(mPopupWindow.mEasyEditSpan); 1856 } 1857 1858 mPopupWindow.setEasyEditSpan((EasyEditSpan) span); 1859 1860 if (mTextView.getWindowVisibility() != View.VISIBLE) { 1861 // The window is not visible yet, ignore the text change. 1862 return; 1863 } 1864 1865 if (mTextView.getLayout() == null) { 1866 // The view has not been laid out yet, ignore the text change 1867 return; 1868 } 1869 1870 if (extractedTextModeWillBeStarted()) { 1871 // The input is in extract mode. Do not handle the easy edit in 1872 // the original TextView, as the ExtractEditText will do 1873 return; 1874 } 1875 1876 mPopupWindow.show(); 1877 mTextView.removeCallbacks(mHidePopup); 1878 mTextView.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS); 1879 } 1880 } 1881 1882 @Override 1883 public void onSpanRemoved(Spannable text, Object span, int start, int end) { 1884 if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { 1885 hide(); 1886 } 1887 } 1888 1889 @Override 1890 public void onSpanChanged(Spannable text, Object span, int previousStart, int previousEnd, 1891 int newStart, int newEnd) { 1892 if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { 1893 text.removeSpan(mPopupWindow.mEasyEditSpan); 1894 } 1895 } 1896 1897 public void hide() { 1898 if (mPopupWindow != null) { 1899 mPopupWindow.hide(); 1900 mTextView.removeCallbacks(mHidePopup); 1901 } 1902 } 1903 } 1904 1905 /** 1906 * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled 1907 * by {@link EasyEditSpanController}. 1908 */ 1909 private class EasyEditPopupWindow extends PinnedPopupWindow 1910 implements OnClickListener { 1911 private static final int POPUP_TEXT_LAYOUT = 1912 com.android.internal.R.layout.text_edit_action_popup_text; 1913 private TextView mDeleteTextView; 1914 private EasyEditSpan mEasyEditSpan; 1915 1916 @Override 1917 protected void createPopupWindow() { 1918 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 1919 com.android.internal.R.attr.textSelectHandleWindowStyle); 1920 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 1921 mPopupWindow.setClippingEnabled(true); 1922 } 1923 1924 @Override 1925 protected void initContentView() { 1926 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 1927 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 1928 mContentView = linearLayout; 1929 mContentView.setBackgroundResource( 1930 com.android.internal.R.drawable.text_edit_side_paste_window); 1931 1932 LayoutInflater inflater = (LayoutInflater)mTextView.getContext(). 1933 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 1934 1935 LayoutParams wrapContent = new LayoutParams( 1936 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 1937 1938 mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 1939 mDeleteTextView.setLayoutParams(wrapContent); 1940 mDeleteTextView.setText(com.android.internal.R.string.delete); 1941 mDeleteTextView.setOnClickListener(this); 1942 mContentView.addView(mDeleteTextView); 1943 } 1944 1945 public void setEasyEditSpan(EasyEditSpan easyEditSpan) { 1946 mEasyEditSpan = easyEditSpan; 1947 } 1948 1949 @Override 1950 public void onClick(View view) { 1951 if (view == mDeleteTextView) { 1952 Editable editable = (Editable) mTextView.getText(); 1953 int start = editable.getSpanStart(mEasyEditSpan); 1954 int end = editable.getSpanEnd(mEasyEditSpan); 1955 if (start >= 0 && end >= 0) { 1956 mTextView.deleteText_internal(start, end); 1957 } 1958 } 1959 } 1960 1961 @Override 1962 protected int getTextOffset() { 1963 // Place the pop-up at the end of the span 1964 Editable editable = (Editable) mTextView.getText(); 1965 return editable.getSpanEnd(mEasyEditSpan); 1966 } 1967 1968 @Override 1969 protected int getVerticalLocalPosition(int line) { 1970 return mTextView.getLayout().getLineBottom(line); 1971 } 1972 1973 @Override 1974 protected int clipVertically(int positionY) { 1975 // As we display the pop-up below the span, no vertical clipping is required. 1976 return positionY; 1977 } 1978 } 1979 1980 private class PositionListener implements ViewTreeObserver.OnPreDrawListener { 1981 // 3 handles 1982 // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others) 1983 private final int MAXIMUM_NUMBER_OF_LISTENERS = 6; 1984 private TextViewPositionListener[] mPositionListeners = 1985 new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS]; 1986 private boolean mCanMove[] = new boolean[MAXIMUM_NUMBER_OF_LISTENERS]; 1987 private boolean mPositionHasChanged = true; 1988 // Absolute position of the TextView with respect to its parent window 1989 private int mPositionX, mPositionY; 1990 private int mNumberOfListeners; 1991 private boolean mScrollHasChanged; 1992 final int[] mTempCoords = new int[2]; 1993 1994 public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) { 1995 if (mNumberOfListeners == 0) { 1996 updatePosition(); 1997 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 1998 vto.addOnPreDrawListener(this); 1999 } 2000 2001 int emptySlotIndex = -1; 2002 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2003 TextViewPositionListener listener = mPositionListeners[i]; 2004 if (listener == positionListener) { 2005 return; 2006 } else if (emptySlotIndex < 0 && listener == null) { 2007 emptySlotIndex = i; 2008 } 2009 } 2010 2011 mPositionListeners[emptySlotIndex] = positionListener; 2012 mCanMove[emptySlotIndex] = canMove; 2013 mNumberOfListeners++; 2014 } 2015 2016 public void removeSubscriber(TextViewPositionListener positionListener) { 2017 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2018 if (mPositionListeners[i] == positionListener) { 2019 mPositionListeners[i] = null; 2020 mNumberOfListeners--; 2021 break; 2022 } 2023 } 2024 2025 if (mNumberOfListeners == 0) { 2026 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2027 vto.removeOnPreDrawListener(this); 2028 } 2029 } 2030 2031 public int getPositionX() { 2032 return mPositionX; 2033 } 2034 2035 public int getPositionY() { 2036 return mPositionY; 2037 } 2038 2039 @Override 2040 public boolean onPreDraw() { 2041 updatePosition(); 2042 2043 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2044 if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) { 2045 TextViewPositionListener positionListener = mPositionListeners[i]; 2046 if (positionListener != null) { 2047 positionListener.updatePosition(mPositionX, mPositionY, 2048 mPositionHasChanged, mScrollHasChanged); 2049 } 2050 } 2051 } 2052 2053 mScrollHasChanged = false; 2054 return true; 2055 } 2056 2057 private void updatePosition() { 2058 mTextView.getLocationInWindow(mTempCoords); 2059 2060 mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY; 2061 2062 mPositionX = mTempCoords[0]; 2063 mPositionY = mTempCoords[1]; 2064 } 2065 2066 public void onScrollChanged() { 2067 mScrollHasChanged = true; 2068 } 2069 } 2070 2071 private abstract class PinnedPopupWindow implements TextViewPositionListener { 2072 protected PopupWindow mPopupWindow; 2073 protected ViewGroup mContentView; 2074 int mPositionX, mPositionY; 2075 2076 protected abstract void createPopupWindow(); 2077 protected abstract void initContentView(); 2078 protected abstract int getTextOffset(); 2079 protected abstract int getVerticalLocalPosition(int line); 2080 protected abstract int clipVertically(int positionY); 2081 2082 public PinnedPopupWindow() { 2083 createPopupWindow(); 2084 2085 mPopupWindow.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 2086 mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 2087 mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 2088 2089 initContentView(); 2090 2091 LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2092 ViewGroup.LayoutParams.WRAP_CONTENT); 2093 mContentView.setLayoutParams(wrapContent); 2094 2095 mPopupWindow.setContentView(mContentView); 2096 } 2097 2098 public void show() { 2099 getPositionListener().addSubscriber(this, false /* offset is fixed */); 2100 2101 computeLocalPosition(); 2102 2103 final PositionListener positionListener = getPositionListener(); 2104 updatePosition(positionListener.getPositionX(), positionListener.getPositionY()); 2105 } 2106 2107 protected void measureContent() { 2108 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2109 mContentView.measure( 2110 View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, 2111 View.MeasureSpec.AT_MOST), 2112 View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, 2113 View.MeasureSpec.AT_MOST)); 2114 } 2115 2116 /* The popup window will be horizontally centered on the getTextOffset() and vertically 2117 * positioned according to viewportToContentHorizontalOffset. 2118 * 2119 * This method assumes that mContentView has properly been measured from its content. */ 2120 private void computeLocalPosition() { 2121 measureContent(); 2122 final int width = mContentView.getMeasuredWidth(); 2123 final int offset = getTextOffset(); 2124 mPositionX = (int) (mTextView.getLayout().getPrimaryHorizontal(offset) - width / 2.0f); 2125 mPositionX += mTextView.viewportToContentHorizontalOffset(); 2126 2127 final int line = mTextView.getLayout().getLineForOffset(offset); 2128 mPositionY = getVerticalLocalPosition(line); 2129 mPositionY += mTextView.viewportToContentVerticalOffset(); 2130 } 2131 2132 private void updatePosition(int parentPositionX, int parentPositionY) { 2133 int positionX = parentPositionX + mPositionX; 2134 int positionY = parentPositionY + mPositionY; 2135 2136 positionY = clipVertically(positionY); 2137 2138 // Horizontal clipping 2139 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2140 final int width = mContentView.getMeasuredWidth(); 2141 positionX = Math.min(displayMetrics.widthPixels - width, positionX); 2142 positionX = Math.max(0, positionX); 2143 2144 if (isShowing()) { 2145 mPopupWindow.update(positionX, positionY, -1, -1); 2146 } else { 2147 mPopupWindow.showAtLocation(mTextView, Gravity.NO_GRAVITY, 2148 positionX, positionY); 2149 } 2150 } 2151 2152 public void hide() { 2153 mPopupWindow.dismiss(); 2154 getPositionListener().removeSubscriber(this); 2155 } 2156 2157 @Override 2158 public void updatePosition(int parentPositionX, int parentPositionY, 2159 boolean parentPositionChanged, boolean parentScrolled) { 2160 // Either parentPositionChanged or parentScrolled is true, check if still visible 2161 if (isShowing() && isOffsetVisible(getTextOffset())) { 2162 if (parentScrolled) computeLocalPosition(); 2163 updatePosition(parentPositionX, parentPositionY); 2164 } else { 2165 hide(); 2166 } 2167 } 2168 2169 public boolean isShowing() { 2170 return mPopupWindow.isShowing(); 2171 } 2172 } 2173 2174 private class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener { 2175 private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE; 2176 private static final int ADD_TO_DICTIONARY = -1; 2177 private static final int DELETE_TEXT = -2; 2178 private SuggestionInfo[] mSuggestionInfos; 2179 private int mNumberOfSuggestions; 2180 private boolean mCursorWasVisibleBeforeSuggestions; 2181 private boolean mIsShowingUp = false; 2182 private SuggestionAdapter mSuggestionsAdapter; 2183 private final Comparator<SuggestionSpan> mSuggestionSpanComparator; 2184 private final HashMap<SuggestionSpan, Integer> mSpansLengths; 2185 2186 private class CustomPopupWindow extends PopupWindow { 2187 public CustomPopupWindow(Context context, int defStyle) { 2188 super(context, null, defStyle); 2189 } 2190 2191 @Override 2192 public void dismiss() { 2193 super.dismiss(); 2194 2195 getPositionListener().removeSubscriber(SuggestionsPopupWindow.this); 2196 2197 // Safe cast since show() checks that mTextView.getText() is an Editable 2198 ((Spannable) mTextView.getText()).removeSpan(mSuggestionRangeSpan); 2199 2200 mTextView.setCursorVisible(mCursorWasVisibleBeforeSuggestions); 2201 if (hasInsertionController()) { 2202 getInsertionController().show(); 2203 } 2204 } 2205 } 2206 2207 public SuggestionsPopupWindow() { 2208 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 2209 mSuggestionSpanComparator = new SuggestionSpanComparator(); 2210 mSpansLengths = new HashMap<SuggestionSpan, Integer>(); 2211 } 2212 2213 @Override 2214 protected void createPopupWindow() { 2215 mPopupWindow = new CustomPopupWindow(mTextView.getContext(), 2216 com.android.internal.R.attr.textSuggestionsWindowStyle); 2217 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 2218 mPopupWindow.setFocusable(true); 2219 mPopupWindow.setClippingEnabled(false); 2220 } 2221 2222 @Override 2223 protected void initContentView() { 2224 ListView listView = new ListView(mTextView.getContext()); 2225 mSuggestionsAdapter = new SuggestionAdapter(); 2226 listView.setAdapter(mSuggestionsAdapter); 2227 listView.setOnItemClickListener(this); 2228 mContentView = listView; 2229 2230 // Inflate the suggestion items once and for all. + 2 for add to dictionary and delete 2231 mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS + 2]; 2232 for (int i = 0; i < mSuggestionInfos.length; i++) { 2233 mSuggestionInfos[i] = new SuggestionInfo(); 2234 } 2235 } 2236 2237 public boolean isShowingUp() { 2238 return mIsShowingUp; 2239 } 2240 2241 public void onParentLostFocus() { 2242 mIsShowingUp = false; 2243 } 2244 2245 private class SuggestionInfo { 2246 int suggestionStart, suggestionEnd; // range of actual suggestion within text 2247 SuggestionSpan suggestionSpan; // the SuggestionSpan that this TextView represents 2248 int suggestionIndex; // the index of this suggestion inside suggestionSpan 2249 SpannableStringBuilder text = new SpannableStringBuilder(); 2250 TextAppearanceSpan highlightSpan = new TextAppearanceSpan(mTextView.getContext(), 2251 android.R.style.TextAppearance_SuggestionHighlight); 2252 } 2253 2254 private class SuggestionAdapter extends BaseAdapter { 2255 private LayoutInflater mInflater = (LayoutInflater) mTextView.getContext(). 2256 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2257 2258 @Override 2259 public int getCount() { 2260 return mNumberOfSuggestions; 2261 } 2262 2263 @Override 2264 public Object getItem(int position) { 2265 return mSuggestionInfos[position]; 2266 } 2267 2268 @Override 2269 public long getItemId(int position) { 2270 return position; 2271 } 2272 2273 @Override 2274 public View getView(int position, View convertView, ViewGroup parent) { 2275 TextView textView = (TextView) convertView; 2276 2277 if (textView == null) { 2278 textView = (TextView) mInflater.inflate(mTextView.mTextEditSuggestionItemLayout, 2279 parent, false); 2280 } 2281 2282 final SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 2283 textView.setText(suggestionInfo.text); 2284 2285 if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY) { 2286 textView.setCompoundDrawablesWithIntrinsicBounds( 2287 com.android.internal.R.drawable.ic_suggestions_add, 0, 0, 0); 2288 } else if (suggestionInfo.suggestionIndex == DELETE_TEXT) { 2289 textView.setCompoundDrawablesWithIntrinsicBounds( 2290 com.android.internal.R.drawable.ic_suggestions_delete, 0, 0, 0); 2291 } else { 2292 textView.setCompoundDrawables(null, null, null, null); 2293 } 2294 2295 return textView; 2296 } 2297 } 2298 2299 private class SuggestionSpanComparator implements Comparator<SuggestionSpan> { 2300 public int compare(SuggestionSpan span1, SuggestionSpan span2) { 2301 final int flag1 = span1.getFlags(); 2302 final int flag2 = span2.getFlags(); 2303 if (flag1 != flag2) { 2304 // The order here should match what is used in updateDrawState 2305 final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 2306 final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 2307 final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0; 2308 final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0; 2309 if (easy1 && !misspelled1) return -1; 2310 if (easy2 && !misspelled2) return 1; 2311 if (misspelled1) return -1; 2312 if (misspelled2) return 1; 2313 } 2314 2315 return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue(); 2316 } 2317 } 2318 2319 /** 2320 * Returns the suggestion spans that cover the current cursor position. The suggestion 2321 * spans are sorted according to the length of text that they are attached to. 2322 */ 2323 private SuggestionSpan[] getSuggestionSpans() { 2324 int pos = mTextView.getSelectionStart(); 2325 Spannable spannable = (Spannable) mTextView.getText(); 2326 SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class); 2327 2328 mSpansLengths.clear(); 2329 for (SuggestionSpan suggestionSpan : suggestionSpans) { 2330 int start = spannable.getSpanStart(suggestionSpan); 2331 int end = spannable.getSpanEnd(suggestionSpan); 2332 mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start)); 2333 } 2334 2335 // The suggestions are sorted according to their types (easy correction first, then 2336 // misspelled) and to the length of the text that they cover (shorter first). 2337 Arrays.sort(suggestionSpans, mSuggestionSpanComparator); 2338 return suggestionSpans; 2339 } 2340 2341 @Override 2342 public void show() { 2343 if (!(mTextView.getText() instanceof Editable)) return; 2344 2345 if (updateSuggestions()) { 2346 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 2347 mTextView.setCursorVisible(false); 2348 mIsShowingUp = true; 2349 super.show(); 2350 } 2351 } 2352 2353 @Override 2354 protected void measureContent() { 2355 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2356 final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec( 2357 displayMetrics.widthPixels, View.MeasureSpec.AT_MOST); 2358 final int verticalMeasure = View.MeasureSpec.makeMeasureSpec( 2359 displayMetrics.heightPixels, View.MeasureSpec.AT_MOST); 2360 2361 int width = 0; 2362 View view = null; 2363 for (int i = 0; i < mNumberOfSuggestions; i++) { 2364 view = mSuggestionsAdapter.getView(i, view, mContentView); 2365 view.getLayoutParams().width = LayoutParams.WRAP_CONTENT; 2366 view.measure(horizontalMeasure, verticalMeasure); 2367 width = Math.max(width, view.getMeasuredWidth()); 2368 } 2369 2370 // Enforce the width based on actual text widths 2371 mContentView.measure( 2372 View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY), 2373 verticalMeasure); 2374 2375 Drawable popupBackground = mPopupWindow.getBackground(); 2376 if (popupBackground != null) { 2377 if (mTempRect == null) mTempRect = new Rect(); 2378 popupBackground.getPadding(mTempRect); 2379 width += mTempRect.left + mTempRect.right; 2380 } 2381 mPopupWindow.setWidth(width); 2382 } 2383 2384 @Override 2385 protected int getTextOffset() { 2386 return mTextView.getSelectionStart(); 2387 } 2388 2389 @Override 2390 protected int getVerticalLocalPosition(int line) { 2391 return mTextView.getLayout().getLineBottom(line); 2392 } 2393 2394 @Override 2395 protected int clipVertically(int positionY) { 2396 final int height = mContentView.getMeasuredHeight(); 2397 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2398 return Math.min(positionY, displayMetrics.heightPixels - height); 2399 } 2400 2401 @Override 2402 public void hide() { 2403 super.hide(); 2404 } 2405 2406 private boolean updateSuggestions() { 2407 Spannable spannable = (Spannable) mTextView.getText(); 2408 SuggestionSpan[] suggestionSpans = getSuggestionSpans(); 2409 2410 final int nbSpans = suggestionSpans.length; 2411 // Suggestions are shown after a delay: the underlying spans may have been removed 2412 if (nbSpans == 0) return false; 2413 2414 mNumberOfSuggestions = 0; 2415 int spanUnionStart = mTextView.getText().length(); 2416 int spanUnionEnd = 0; 2417 2418 SuggestionSpan misspelledSpan = null; 2419 int underlineColor = 0; 2420 2421 for (int spanIndex = 0; spanIndex < nbSpans; spanIndex++) { 2422 SuggestionSpan suggestionSpan = suggestionSpans[spanIndex]; 2423 final int spanStart = spannable.getSpanStart(suggestionSpan); 2424 final int spanEnd = spannable.getSpanEnd(suggestionSpan); 2425 spanUnionStart = Math.min(spanStart, spanUnionStart); 2426 spanUnionEnd = Math.max(spanEnd, spanUnionEnd); 2427 2428 if ((suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) { 2429 misspelledSpan = suggestionSpan; 2430 } 2431 2432 // The first span dictates the background color of the highlighted text 2433 if (spanIndex == 0) underlineColor = suggestionSpan.getUnderlineColor(); 2434 2435 String[] suggestions = suggestionSpan.getSuggestions(); 2436 int nbSuggestions = suggestions.length; 2437 for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) { 2438 String suggestion = suggestions[suggestionIndex]; 2439 2440 boolean suggestionIsDuplicate = false; 2441 for (int i = 0; i < mNumberOfSuggestions; i++) { 2442 if (mSuggestionInfos[i].text.toString().equals(suggestion)) { 2443 SuggestionSpan otherSuggestionSpan = mSuggestionInfos[i].suggestionSpan; 2444 final int otherSpanStart = spannable.getSpanStart(otherSuggestionSpan); 2445 final int otherSpanEnd = spannable.getSpanEnd(otherSuggestionSpan); 2446 if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) { 2447 suggestionIsDuplicate = true; 2448 break; 2449 } 2450 } 2451 } 2452 2453 if (!suggestionIsDuplicate) { 2454 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2455 suggestionInfo.suggestionSpan = suggestionSpan; 2456 suggestionInfo.suggestionIndex = suggestionIndex; 2457 suggestionInfo.text.replace(0, suggestionInfo.text.length(), suggestion); 2458 2459 mNumberOfSuggestions++; 2460 2461 if (mNumberOfSuggestions == MAX_NUMBER_SUGGESTIONS) { 2462 // Also end outer for loop 2463 spanIndex = nbSpans; 2464 break; 2465 } 2466 } 2467 } 2468 } 2469 2470 for (int i = 0; i < mNumberOfSuggestions; i++) { 2471 highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd); 2472 } 2473 2474 // Add "Add to dictionary" item if there is a span with the misspelled flag 2475 if (misspelledSpan != null) { 2476 final int misspelledStart = spannable.getSpanStart(misspelledSpan); 2477 final int misspelledEnd = spannable.getSpanEnd(misspelledSpan); 2478 if (misspelledStart >= 0 && misspelledEnd > misspelledStart) { 2479 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2480 suggestionInfo.suggestionSpan = misspelledSpan; 2481 suggestionInfo.suggestionIndex = ADD_TO_DICTIONARY; 2482 suggestionInfo.text.replace(0, suggestionInfo.text.length(), mTextView. 2483 getContext().getString(com.android.internal.R.string.addToDictionary)); 2484 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0, 2485 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2486 2487 mNumberOfSuggestions++; 2488 } 2489 } 2490 2491 // Delete item 2492 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2493 suggestionInfo.suggestionSpan = null; 2494 suggestionInfo.suggestionIndex = DELETE_TEXT; 2495 suggestionInfo.text.replace(0, suggestionInfo.text.length(), 2496 mTextView.getContext().getString(com.android.internal.R.string.deleteText)); 2497 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0, 2498 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2499 mNumberOfSuggestions++; 2500 2501 if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan(); 2502 if (underlineColor == 0) { 2503 // Fallback on the default highlight color when the first span does not provide one 2504 mSuggestionRangeSpan.setBackgroundColor(mTextView.mHighlightColor); 2505 } else { 2506 final float BACKGROUND_TRANSPARENCY = 0.4f; 2507 final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY); 2508 mSuggestionRangeSpan.setBackgroundColor( 2509 (underlineColor & 0x00FFFFFF) + (newAlpha << 24)); 2510 } 2511 spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd, 2512 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2513 2514 mSuggestionsAdapter.notifyDataSetChanged(); 2515 return true; 2516 } 2517 2518 private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart, 2519 int unionEnd) { 2520 final Spannable text = (Spannable) mTextView.getText(); 2521 final int spanStart = text.getSpanStart(suggestionInfo.suggestionSpan); 2522 final int spanEnd = text.getSpanEnd(suggestionInfo.suggestionSpan); 2523 2524 // Adjust the start/end of the suggestion span 2525 suggestionInfo.suggestionStart = spanStart - unionStart; 2526 suggestionInfo.suggestionEnd = suggestionInfo.suggestionStart 2527 + suggestionInfo.text.length(); 2528 2529 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 2530 suggestionInfo.text.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2531 2532 // Add the text before and after the span. 2533 final String textAsString = text.toString(); 2534 suggestionInfo.text.insert(0, textAsString.substring(unionStart, spanStart)); 2535 suggestionInfo.text.append(textAsString.substring(spanEnd, unionEnd)); 2536 } 2537 2538 @Override 2539 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 2540 Editable editable = (Editable) mTextView.getText(); 2541 SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 2542 2543 if (suggestionInfo.suggestionIndex == DELETE_TEXT) { 2544 final int spanUnionStart = editable.getSpanStart(mSuggestionRangeSpan); 2545 int spanUnionEnd = editable.getSpanEnd(mSuggestionRangeSpan); 2546 if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) { 2547 // Do not leave two adjacent spaces after deletion, or one at beginning of text 2548 if (spanUnionEnd < editable.length() && 2549 Character.isSpaceChar(editable.charAt(spanUnionEnd)) && 2550 (spanUnionStart == 0 || 2551 Character.isSpaceChar(editable.charAt(spanUnionStart - 1)))) { 2552 spanUnionEnd = spanUnionEnd + 1; 2553 } 2554 mTextView.deleteText_internal(spanUnionStart, spanUnionEnd); 2555 } 2556 hide(); 2557 return; 2558 } 2559 2560 final int spanStart = editable.getSpanStart(suggestionInfo.suggestionSpan); 2561 final int spanEnd = editable.getSpanEnd(suggestionInfo.suggestionSpan); 2562 if (spanStart < 0 || spanEnd <= spanStart) { 2563 // Span has been removed 2564 hide(); 2565 return; 2566 } 2567 2568 final String originalText = editable.toString().substring(spanStart, spanEnd); 2569 2570 if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY) { 2571 Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT); 2572 intent.putExtra("word", originalText); 2573 intent.putExtra("locale", mTextView.getTextServicesLocale().toString()); 2574 intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); 2575 mTextView.getContext().startActivity(intent); 2576 // There is no way to know if the word was indeed added. Re-check. 2577 // TODO The ExtractEditText should remove the span in the original text instead 2578 editable.removeSpan(suggestionInfo.suggestionSpan); 2579 Selection.setSelection(editable, spanEnd); 2580 updateSpellCheckSpans(spanStart, spanEnd, false); 2581 } else { 2582 // SuggestionSpans are removed by replace: save them before 2583 SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd, 2584 SuggestionSpan.class); 2585 final int length = suggestionSpans.length; 2586 int[] suggestionSpansStarts = new int[length]; 2587 int[] suggestionSpansEnds = new int[length]; 2588 int[] suggestionSpansFlags = new int[length]; 2589 for (int i = 0; i < length; i++) { 2590 final SuggestionSpan suggestionSpan = suggestionSpans[i]; 2591 suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan); 2592 suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan); 2593 suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan); 2594 2595 // Remove potential misspelled flags 2596 int suggestionSpanFlags = suggestionSpan.getFlags(); 2597 if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) > 0) { 2598 suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED; 2599 suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 2600 suggestionSpan.setFlags(suggestionSpanFlags); 2601 } 2602 } 2603 2604 final int suggestionStart = suggestionInfo.suggestionStart; 2605 final int suggestionEnd = suggestionInfo.suggestionEnd; 2606 final String suggestion = suggestionInfo.text.subSequence( 2607 suggestionStart, suggestionEnd).toString(); 2608 mTextView.replaceText_internal(spanStart, spanEnd, suggestion); 2609 2610 // Notify source IME of the suggestion pick. Do this before swaping texts. 2611 if (!TextUtils.isEmpty( 2612 suggestionInfo.suggestionSpan.getNotificationTargetClassName())) { 2613 InputMethodManager imm = InputMethodManager.peekInstance(); 2614 if (imm != null) { 2615 imm.notifySuggestionPicked(suggestionInfo.suggestionSpan, originalText, 2616 suggestionInfo.suggestionIndex); 2617 } 2618 } 2619 2620 // Swap text content between actual text and Suggestion span 2621 String[] suggestions = suggestionInfo.suggestionSpan.getSuggestions(); 2622 suggestions[suggestionInfo.suggestionIndex] = originalText; 2623 2624 // Restore previous SuggestionSpans 2625 final int lengthDifference = suggestion.length() - (spanEnd - spanStart); 2626 for (int i = 0; i < length; i++) { 2627 // Only spans that include the modified region make sense after replacement 2628 // Spans partially included in the replaced region are removed, there is no 2629 // way to assign them a valid range after replacement 2630 if (suggestionSpansStarts[i] <= spanStart && 2631 suggestionSpansEnds[i] >= spanEnd) { 2632 mTextView.setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i], 2633 suggestionSpansEnds[i] + lengthDifference, suggestionSpansFlags[i]); 2634 } 2635 } 2636 2637 // Move cursor at the end of the replaced word 2638 final int newCursorPosition = spanEnd + lengthDifference; 2639 mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); 2640 } 2641 2642 hide(); 2643 } 2644 } 2645 2646 /** 2647 * An ActionMode Callback class that is used to provide actions while in text selection mode. 2648 * 2649 * The default callback provides a subset of Select All, Cut, Copy and Paste actions, depending 2650 * on which of these this TextView supports. 2651 */ 2652 private class SelectionActionModeCallback implements ActionMode.Callback { 2653 2654 @Override 2655 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 2656 TypedArray styledAttributes = mTextView.getContext().obtainStyledAttributes( 2657 com.android.internal.R.styleable.SelectionModeDrawables); 2658 2659 boolean allowText = mTextView.getContext().getResources().getBoolean( 2660 com.android.internal.R.bool.config_allowActionMenuItemTextWithIcon); 2661 2662 mode.setTitle(mTextView.getContext().getString( 2663 com.android.internal.R.string.textSelectionCABTitle)); 2664 mode.setSubtitle(null); 2665 mode.setTitleOptionalHint(true); 2666 2667 int selectAllIconId = 0; // No icon by default 2668 if (!allowText) { 2669 // Provide an icon, text will not be displayed on smaller screens. 2670 selectAllIconId = styledAttributes.getResourceId( 2671 R.styleable.SelectionModeDrawables_actionModeSelectAllDrawable, 0); 2672 } 2673 2674 menu.add(0, TextView.ID_SELECT_ALL, 0, com.android.internal.R.string.selectAll). 2675 setIcon(selectAllIconId). 2676 setAlphabeticShortcut('a'). 2677 setShowAsAction( 2678 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2679 2680 if (mTextView.canCut()) { 2681 menu.add(0, TextView.ID_CUT, 0, com.android.internal.R.string.cut). 2682 setIcon(styledAttributes.getResourceId( 2683 R.styleable.SelectionModeDrawables_actionModeCutDrawable, 0)). 2684 setAlphabeticShortcut('x'). 2685 setShowAsAction( 2686 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2687 } 2688 2689 if (mTextView.canCopy()) { 2690 menu.add(0, TextView.ID_COPY, 0, com.android.internal.R.string.copy). 2691 setIcon(styledAttributes.getResourceId( 2692 R.styleable.SelectionModeDrawables_actionModeCopyDrawable, 0)). 2693 setAlphabeticShortcut('c'). 2694 setShowAsAction( 2695 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2696 } 2697 2698 if (mTextView.canPaste()) { 2699 menu.add(0, TextView.ID_PASTE, 0, com.android.internal.R.string.paste). 2700 setIcon(styledAttributes.getResourceId( 2701 R.styleable.SelectionModeDrawables_actionModePasteDrawable, 0)). 2702 setAlphabeticShortcut('v'). 2703 setShowAsAction( 2704 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2705 } 2706 2707 styledAttributes.recycle(); 2708 2709 if (mCustomSelectionActionModeCallback != null) { 2710 if (!mCustomSelectionActionModeCallback.onCreateActionMode(mode, menu)) { 2711 // The custom mode can choose to cancel the action mode 2712 return false; 2713 } 2714 } 2715 2716 if (menu.hasVisibleItems() || mode.getCustomView() != null) { 2717 getSelectionController().show(); 2718 mTextView.setHasTransientState(true); 2719 return true; 2720 } else { 2721 return false; 2722 } 2723 } 2724 2725 @Override 2726 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 2727 if (mCustomSelectionActionModeCallback != null) { 2728 return mCustomSelectionActionModeCallback.onPrepareActionMode(mode, menu); 2729 } 2730 return true; 2731 } 2732 2733 @Override 2734 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 2735 if (mCustomSelectionActionModeCallback != null && 2736 mCustomSelectionActionModeCallback.onActionItemClicked(mode, item)) { 2737 return true; 2738 } 2739 return mTextView.onTextContextMenuItem(item.getItemId()); 2740 } 2741 2742 @Override 2743 public void onDestroyActionMode(ActionMode mode) { 2744 if (mCustomSelectionActionModeCallback != null) { 2745 mCustomSelectionActionModeCallback.onDestroyActionMode(mode); 2746 } 2747 2748 /* 2749 * If we're ending this mode because we're detaching from a window, 2750 * we still have selection state to preserve. Don't clear it, we'll 2751 * bring back the selection mode when (if) we get reattached. 2752 */ 2753 if (!mPreserveDetachedSelection) { 2754 Selection.setSelection((Spannable) mTextView.getText(), 2755 mTextView.getSelectionEnd()); 2756 mTextView.setHasTransientState(false); 2757 } 2758 2759 if (mSelectionModifierCursorController != null) { 2760 mSelectionModifierCursorController.hide(); 2761 } 2762 2763 mSelectionActionMode = null; 2764 } 2765 } 2766 2767 private class ActionPopupWindow extends PinnedPopupWindow implements OnClickListener { 2768 private static final int POPUP_TEXT_LAYOUT = 2769 com.android.internal.R.layout.text_edit_action_popup_text; 2770 private TextView mPasteTextView; 2771 private TextView mReplaceTextView; 2772 2773 @Override 2774 protected void createPopupWindow() { 2775 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 2776 com.android.internal.R.attr.textSelectHandleWindowStyle); 2777 mPopupWindow.setClippingEnabled(true); 2778 } 2779 2780 @Override 2781 protected void initContentView() { 2782 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 2783 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 2784 mContentView = linearLayout; 2785 mContentView.setBackgroundResource( 2786 com.android.internal.R.drawable.text_edit_paste_window); 2787 2788 LayoutInflater inflater = (LayoutInflater) mTextView.getContext(). 2789 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2790 2791 LayoutParams wrapContent = new LayoutParams( 2792 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 2793 2794 mPasteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2795 mPasteTextView.setLayoutParams(wrapContent); 2796 mContentView.addView(mPasteTextView); 2797 mPasteTextView.setText(com.android.internal.R.string.paste); 2798 mPasteTextView.setOnClickListener(this); 2799 2800 mReplaceTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2801 mReplaceTextView.setLayoutParams(wrapContent); 2802 mContentView.addView(mReplaceTextView); 2803 mReplaceTextView.setText(com.android.internal.R.string.replace); 2804 mReplaceTextView.setOnClickListener(this); 2805 } 2806 2807 @Override 2808 public void show() { 2809 boolean canPaste = mTextView.canPaste(); 2810 boolean canSuggest = mTextView.isSuggestionsEnabled() && isCursorInsideSuggestionSpan(); 2811 mPasteTextView.setVisibility(canPaste ? View.VISIBLE : View.GONE); 2812 mReplaceTextView.setVisibility(canSuggest ? View.VISIBLE : View.GONE); 2813 2814 if (!canPaste && !canSuggest) return; 2815 2816 super.show(); 2817 } 2818 2819 @Override 2820 public void onClick(View view) { 2821 if (view == mPasteTextView && mTextView.canPaste()) { 2822 mTextView.onTextContextMenuItem(TextView.ID_PASTE); 2823 hide(); 2824 } else if (view == mReplaceTextView) { 2825 int middle = (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 2826 stopSelectionActionMode(); 2827 Selection.setSelection((Spannable) mTextView.getText(), middle); 2828 showSuggestions(); 2829 } 2830 } 2831 2832 @Override 2833 protected int getTextOffset() { 2834 return (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 2835 } 2836 2837 @Override 2838 protected int getVerticalLocalPosition(int line) { 2839 return mTextView.getLayout().getLineTop(line) - mContentView.getMeasuredHeight(); 2840 } 2841 2842 @Override 2843 protected int clipVertically(int positionY) { 2844 if (positionY < 0) { 2845 final int offset = getTextOffset(); 2846 final Layout layout = mTextView.getLayout(); 2847 final int line = layout.getLineForOffset(offset); 2848 positionY += layout.getLineBottom(line) - layout.getLineTop(line); 2849 positionY += mContentView.getMeasuredHeight(); 2850 2851 // Assumes insertion and selection handles share the same height 2852 final Drawable handle = mTextView.getResources().getDrawable( 2853 mTextView.mTextSelectHandleRes); 2854 positionY += handle.getIntrinsicHeight(); 2855 } 2856 2857 return positionY; 2858 } 2859 } 2860 2861 private abstract class HandleView extends View implements TextViewPositionListener { 2862 protected Drawable mDrawable; 2863 protected Drawable mDrawableLtr; 2864 protected Drawable mDrawableRtl; 2865 private final PopupWindow mContainer; 2866 // Position with respect to the parent TextView 2867 private int mPositionX, mPositionY; 2868 private boolean mIsDragging; 2869 // Offset from touch position to mPosition 2870 private float mTouchToWindowOffsetX, mTouchToWindowOffsetY; 2871 protected int mHotspotX; 2872 // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up 2873 private float mTouchOffsetY; 2874 // Where the touch position should be on the handle to ensure a maximum cursor visibility 2875 private float mIdealVerticalOffset; 2876 // Parent's (TextView) previous position in window 2877 private int mLastParentX, mLastParentY; 2878 // Transient action popup window for Paste and Replace actions 2879 protected ActionPopupWindow mActionPopupWindow; 2880 // Previous text character offset 2881 private int mPreviousOffset = -1; 2882 // Previous text character offset 2883 private boolean mPositionHasChanged = true; 2884 // Used to delay the appearance of the action popup window 2885 private Runnable mActionPopupShower; 2886 2887 public HandleView(Drawable drawableLtr, Drawable drawableRtl) { 2888 super(mTextView.getContext()); 2889 mContainer = new PopupWindow(mTextView.getContext(), null, 2890 com.android.internal.R.attr.textSelectHandleWindowStyle); 2891 mContainer.setSplitTouchEnabled(true); 2892 mContainer.setClippingEnabled(false); 2893 mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 2894 mContainer.setContentView(this); 2895 2896 mDrawableLtr = drawableLtr; 2897 mDrawableRtl = drawableRtl; 2898 2899 updateDrawable(); 2900 2901 final int handleHeight = mDrawable.getIntrinsicHeight(); 2902 mTouchOffsetY = -0.3f * handleHeight; 2903 mIdealVerticalOffset = 0.7f * handleHeight; 2904 } 2905 2906 protected void updateDrawable() { 2907 final int offset = getCurrentCursorOffset(); 2908 final boolean isRtlCharAtOffset = mTextView.getLayout().isRtlCharAt(offset); 2909 mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr; 2910 mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset); 2911 } 2912 2913 protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun); 2914 2915 // Touch-up filter: number of previous positions remembered 2916 private static final int HISTORY_SIZE = 5; 2917 private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150; 2918 private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350; 2919 private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; 2920 private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; 2921 private int mPreviousOffsetIndex = 0; 2922 private int mNumberPreviousOffsets = 0; 2923 2924 private void startTouchUpFilter(int offset) { 2925 mNumberPreviousOffsets = 0; 2926 addPositionToTouchUpFilter(offset); 2927 } 2928 2929 private void addPositionToTouchUpFilter(int offset) { 2930 mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; 2931 mPreviousOffsets[mPreviousOffsetIndex] = offset; 2932 mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); 2933 mNumberPreviousOffsets++; 2934 } 2935 2936 private void filterOnTouchUp() { 2937 final long now = SystemClock.uptimeMillis(); 2938 int i = 0; 2939 int index = mPreviousOffsetIndex; 2940 final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); 2941 while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) { 2942 i++; 2943 index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; 2944 } 2945 2946 if (i > 0 && i < iMax && 2947 (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) { 2948 positionAtCursorOffset(mPreviousOffsets[index], false); 2949 } 2950 } 2951 2952 public boolean offsetHasBeenChanged() { 2953 return mNumberPreviousOffsets > 1; 2954 } 2955 2956 @Override 2957 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 2958 setMeasuredDimension(mDrawable.getIntrinsicWidth(), mDrawable.getIntrinsicHeight()); 2959 } 2960 2961 public void show() { 2962 if (isShowing()) return; 2963 2964 getPositionListener().addSubscriber(this, true /* local position may change */); 2965 2966 // Make sure the offset is always considered new, even when focusing at same position 2967 mPreviousOffset = -1; 2968 positionAtCursorOffset(getCurrentCursorOffset(), false); 2969 2970 hideActionPopupWindow(); 2971 } 2972 2973 protected void dismiss() { 2974 mIsDragging = false; 2975 mContainer.dismiss(); 2976 onDetached(); 2977 } 2978 2979 public void hide() { 2980 dismiss(); 2981 2982 getPositionListener().removeSubscriber(this); 2983 } 2984 2985 void showActionPopupWindow(int delay) { 2986 if (mActionPopupWindow == null) { 2987 mActionPopupWindow = new ActionPopupWindow(); 2988 } 2989 if (mActionPopupShower == null) { 2990 mActionPopupShower = new Runnable() { 2991 public void run() { 2992 mActionPopupWindow.show(); 2993 } 2994 }; 2995 } else { 2996 mTextView.removeCallbacks(mActionPopupShower); 2997 } 2998 mTextView.postDelayed(mActionPopupShower, delay); 2999 } 3000 3001 protected void hideActionPopupWindow() { 3002 if (mActionPopupShower != null) { 3003 mTextView.removeCallbacks(mActionPopupShower); 3004 } 3005 if (mActionPopupWindow != null) { 3006 mActionPopupWindow.hide(); 3007 } 3008 } 3009 3010 public boolean isShowing() { 3011 return mContainer.isShowing(); 3012 } 3013 3014 private boolean isVisible() { 3015 // Always show a dragging handle. 3016 if (mIsDragging) { 3017 return true; 3018 } 3019 3020 if (mTextView.isInBatchEditMode()) { 3021 return false; 3022 } 3023 3024 return isPositionVisible(mPositionX + mHotspotX, mPositionY); 3025 } 3026 3027 public abstract int getCurrentCursorOffset(); 3028 3029 protected abstract void updateSelection(int offset); 3030 3031 public abstract void updatePosition(float x, float y); 3032 3033 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 3034 // A HandleView relies on the layout, which may be nulled by external methods 3035 Layout layout = mTextView.getLayout(); 3036 if (layout == null) { 3037 // Will update controllers' state, hiding them and stopping selection mode if needed 3038 prepareCursorControllers(); 3039 return; 3040 } 3041 3042 boolean offsetChanged = offset != mPreviousOffset; 3043 if (offsetChanged || parentScrolled) { 3044 if (offsetChanged) { 3045 updateSelection(offset); 3046 addPositionToTouchUpFilter(offset); 3047 } 3048 final int line = layout.getLineForOffset(offset); 3049 3050 mPositionX = (int) (layout.getPrimaryHorizontal(offset) - 0.5f - mHotspotX); 3051 mPositionY = layout.getLineBottom(line); 3052 3053 // Take TextView's padding and scroll into account. 3054 mPositionX += mTextView.viewportToContentHorizontalOffset(); 3055 mPositionY += mTextView.viewportToContentVerticalOffset(); 3056 3057 mPreviousOffset = offset; 3058 mPositionHasChanged = true; 3059 } 3060 } 3061 3062 public void updatePosition(int parentPositionX, int parentPositionY, 3063 boolean parentPositionChanged, boolean parentScrolled) { 3064 positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled); 3065 if (parentPositionChanged || mPositionHasChanged) { 3066 if (mIsDragging) { 3067 // Update touchToWindow offset in case of parent scrolling while dragging 3068 if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) { 3069 mTouchToWindowOffsetX += parentPositionX - mLastParentX; 3070 mTouchToWindowOffsetY += parentPositionY - mLastParentY; 3071 mLastParentX = parentPositionX; 3072 mLastParentY = parentPositionY; 3073 } 3074 3075 onHandleMoved(); 3076 } 3077 3078 if (isVisible()) { 3079 final int positionX = parentPositionX + mPositionX; 3080 final int positionY = parentPositionY + mPositionY; 3081 if (isShowing()) { 3082 mContainer.update(positionX, positionY, -1, -1); 3083 } else { 3084 mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, 3085 positionX, positionY); 3086 } 3087 } else { 3088 if (isShowing()) { 3089 dismiss(); 3090 } 3091 } 3092 3093 mPositionHasChanged = false; 3094 } 3095 } 3096 3097 @Override 3098 protected void onDraw(Canvas c) { 3099 mDrawable.setBounds(0, 0, mRight - mLeft, mBottom - mTop); 3100 mDrawable.draw(c); 3101 } 3102 3103 @Override 3104 public boolean onTouchEvent(MotionEvent ev) { 3105 switch (ev.getActionMasked()) { 3106 case MotionEvent.ACTION_DOWN: { 3107 startTouchUpFilter(getCurrentCursorOffset()); 3108 mTouchToWindowOffsetX = ev.getRawX() - mPositionX; 3109 mTouchToWindowOffsetY = ev.getRawY() - mPositionY; 3110 3111 final PositionListener positionListener = getPositionListener(); 3112 mLastParentX = positionListener.getPositionX(); 3113 mLastParentY = positionListener.getPositionY(); 3114 mIsDragging = true; 3115 break; 3116 } 3117 3118 case MotionEvent.ACTION_MOVE: { 3119 final float rawX = ev.getRawX(); 3120 final float rawY = ev.getRawY(); 3121 3122 // Vertical hysteresis: vertical down movement tends to snap to ideal offset 3123 final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY; 3124 final float currentVerticalOffset = rawY - mPositionY - mLastParentY; 3125 float newVerticalOffset; 3126 if (previousVerticalOffset < mIdealVerticalOffset) { 3127 newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset); 3128 newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset); 3129 } else { 3130 newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset); 3131 newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset); 3132 } 3133 mTouchToWindowOffsetY = newVerticalOffset + mLastParentY; 3134 3135 final float newPosX = rawX - mTouchToWindowOffsetX + mHotspotX; 3136 final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY; 3137 3138 updatePosition(newPosX, newPosY); 3139 break; 3140 } 3141 3142 case MotionEvent.ACTION_UP: 3143 filterOnTouchUp(); 3144 mIsDragging = false; 3145 break; 3146 3147 case MotionEvent.ACTION_CANCEL: 3148 mIsDragging = false; 3149 break; 3150 } 3151 return true; 3152 } 3153 3154 public boolean isDragging() { 3155 return mIsDragging; 3156 } 3157 3158 void onHandleMoved() { 3159 hideActionPopupWindow(); 3160 } 3161 3162 public void onDetached() { 3163 hideActionPopupWindow(); 3164 } 3165 } 3166 3167 private class InsertionHandleView extends HandleView { 3168 private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000; 3169 private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds 3170 3171 // Used to detect taps on the insertion handle, which will affect the ActionPopupWindow 3172 private float mDownPositionX, mDownPositionY; 3173 private Runnable mHider; 3174 3175 public InsertionHandleView(Drawable drawable) { 3176 super(drawable, drawable); 3177 } 3178 3179 @Override 3180 public void show() { 3181 super.show(); 3182 3183 final long durationSinceCutOrCopy = 3184 SystemClock.uptimeMillis() - TextView.LAST_CUT_OR_COPY_TIME; 3185 if (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION) { 3186 showActionPopupWindow(0); 3187 } 3188 3189 hideAfterDelay(); 3190 } 3191 3192 public void showWithActionPopup() { 3193 show(); 3194 showActionPopupWindow(0); 3195 } 3196 3197 private void hideAfterDelay() { 3198 if (mHider == null) { 3199 mHider = new Runnable() { 3200 public void run() { 3201 hide(); 3202 } 3203 }; 3204 } else { 3205 removeHiderCallback(); 3206 } 3207 mTextView.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT); 3208 } 3209 3210 private void removeHiderCallback() { 3211 if (mHider != null) { 3212 mTextView.removeCallbacks(mHider); 3213 } 3214 } 3215 3216 @Override 3217 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3218 return drawable.getIntrinsicWidth() / 2; 3219 } 3220 3221 @Override 3222 public boolean onTouchEvent(MotionEvent ev) { 3223 final boolean result = super.onTouchEvent(ev); 3224 3225 switch (ev.getActionMasked()) { 3226 case MotionEvent.ACTION_DOWN: 3227 mDownPositionX = ev.getRawX(); 3228 mDownPositionY = ev.getRawY(); 3229 break; 3230 3231 case MotionEvent.ACTION_UP: 3232 if (!offsetHasBeenChanged()) { 3233 final float deltaX = mDownPositionX - ev.getRawX(); 3234 final float deltaY = mDownPositionY - ev.getRawY(); 3235 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3236 3237 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 3238 mTextView.getContext()); 3239 final int touchSlop = viewConfiguration.getScaledTouchSlop(); 3240 3241 if (distanceSquared < touchSlop * touchSlop) { 3242 if (mActionPopupWindow != null && mActionPopupWindow.isShowing()) { 3243 // Tapping on the handle dismisses the displayed action popup 3244 mActionPopupWindow.hide(); 3245 } else { 3246 showWithActionPopup(); 3247 } 3248 } 3249 } 3250 hideAfterDelay(); 3251 break; 3252 3253 case MotionEvent.ACTION_CANCEL: 3254 hideAfterDelay(); 3255 break; 3256 3257 default: 3258 break; 3259 } 3260 3261 return result; 3262 } 3263 3264 @Override 3265 public int getCurrentCursorOffset() { 3266 return mTextView.getSelectionStart(); 3267 } 3268 3269 @Override 3270 public void updateSelection(int offset) { 3271 Selection.setSelection((Spannable) mTextView.getText(), offset); 3272 } 3273 3274 @Override 3275 public void updatePosition(float x, float y) { 3276 positionAtCursorOffset(mTextView.getOffsetForPosition(x, y), false); 3277 } 3278 3279 @Override 3280 void onHandleMoved() { 3281 super.onHandleMoved(); 3282 removeHiderCallback(); 3283 } 3284 3285 @Override 3286 public void onDetached() { 3287 super.onDetached(); 3288 removeHiderCallback(); 3289 } 3290 } 3291 3292 private class SelectionStartHandleView extends HandleView { 3293 3294 public SelectionStartHandleView(Drawable drawableLtr, Drawable drawableRtl) { 3295 super(drawableLtr, drawableRtl); 3296 } 3297 3298 @Override 3299 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3300 if (isRtlRun) { 3301 return drawable.getIntrinsicWidth() / 4; 3302 } else { 3303 return (drawable.getIntrinsicWidth() * 3) / 4; 3304 } 3305 } 3306 3307 @Override 3308 public int getCurrentCursorOffset() { 3309 return mTextView.getSelectionStart(); 3310 } 3311 3312 @Override 3313 public void updateSelection(int offset) { 3314 Selection.setSelection((Spannable) mTextView.getText(), offset, 3315 mTextView.getSelectionEnd()); 3316 updateDrawable(); 3317 } 3318 3319 @Override 3320 public void updatePosition(float x, float y) { 3321 int offset = mTextView.getOffsetForPosition(x, y); 3322 3323 // Handles can not cross and selection is at least one character 3324 final int selectionEnd = mTextView.getSelectionEnd(); 3325 if (offset >= selectionEnd) offset = Math.max(0, selectionEnd - 1); 3326 3327 positionAtCursorOffset(offset, false); 3328 } 3329 3330 public ActionPopupWindow getActionPopupWindow() { 3331 return mActionPopupWindow; 3332 } 3333 } 3334 3335 private class SelectionEndHandleView extends HandleView { 3336 3337 public SelectionEndHandleView(Drawable drawableLtr, Drawable drawableRtl) { 3338 super(drawableLtr, drawableRtl); 3339 } 3340 3341 @Override 3342 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3343 if (isRtlRun) { 3344 return (drawable.getIntrinsicWidth() * 3) / 4; 3345 } else { 3346 return drawable.getIntrinsicWidth() / 4; 3347 } 3348 } 3349 3350 @Override 3351 public int getCurrentCursorOffset() { 3352 return mTextView.getSelectionEnd(); 3353 } 3354 3355 @Override 3356 public void updateSelection(int offset) { 3357 Selection.setSelection((Spannable) mTextView.getText(), 3358 mTextView.getSelectionStart(), offset); 3359 updateDrawable(); 3360 } 3361 3362 @Override 3363 public void updatePosition(float x, float y) { 3364 int offset = mTextView.getOffsetForPosition(x, y); 3365 3366 // Handles can not cross and selection is at least one character 3367 final int selectionStart = mTextView.getSelectionStart(); 3368 if (offset <= selectionStart) { 3369 offset = Math.min(selectionStart + 1, mTextView.getText().length()); 3370 } 3371 3372 positionAtCursorOffset(offset, false); 3373 } 3374 3375 public void setActionPopupWindow(ActionPopupWindow actionPopupWindow) { 3376 mActionPopupWindow = actionPopupWindow; 3377 } 3378 } 3379 3380 /** 3381 * A CursorController instance can be used to control a cursor in the text. 3382 */ 3383 private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { 3384 /** 3385 * Makes the cursor controller visible on screen. 3386 * See also {@link #hide()}. 3387 */ 3388 public void show(); 3389 3390 /** 3391 * Hide the cursor controller from screen. 3392 * See also {@link #show()}. 3393 */ 3394 public void hide(); 3395 3396 /** 3397 * Called when the view is detached from window. Perform house keeping task, such as 3398 * stopping Runnable thread that would otherwise keep a reference on the context, thus 3399 * preventing the activity from being recycled. 3400 */ 3401 public void onDetached(); 3402 } 3403 3404 private class InsertionPointCursorController implements CursorController { 3405 private InsertionHandleView mHandle; 3406 3407 public void show() { 3408 getHandle().show(); 3409 } 3410 3411 public void showWithActionPopup() { 3412 getHandle().showWithActionPopup(); 3413 } 3414 3415 public void hide() { 3416 if (mHandle != null) { 3417 mHandle.hide(); 3418 } 3419 } 3420 3421 public void onTouchModeChanged(boolean isInTouchMode) { 3422 if (!isInTouchMode) { 3423 hide(); 3424 } 3425 } 3426 3427 private InsertionHandleView getHandle() { 3428 if (mSelectHandleCenter == null) { 3429 mSelectHandleCenter = mTextView.getResources().getDrawable( 3430 mTextView.mTextSelectHandleRes); 3431 } 3432 if (mHandle == null) { 3433 mHandle = new InsertionHandleView(mSelectHandleCenter); 3434 } 3435 return mHandle; 3436 } 3437 3438 @Override 3439 public void onDetached() { 3440 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 3441 observer.removeOnTouchModeChangeListener(this); 3442 3443 if (mHandle != null) mHandle.onDetached(); 3444 } 3445 } 3446 3447 class SelectionModifierCursorController implements CursorController { 3448 private static final int DELAY_BEFORE_REPLACE_ACTION = 200; // milliseconds 3449 // The cursor controller handles, lazily created when shown. 3450 private SelectionStartHandleView mStartHandle; 3451 private SelectionEndHandleView mEndHandle; 3452 // The offsets of that last touch down event. Remembered to start selection there. 3453 private int mMinTouchOffset, mMaxTouchOffset; 3454 3455 // Double tap detection 3456 private long mPreviousTapUpTime = 0; 3457 private float mDownPositionX, mDownPositionY; 3458 private boolean mGestureStayedInTapRegion; 3459 3460 SelectionModifierCursorController() { 3461 resetTouchOffsets(); 3462 } 3463 3464 public void show() { 3465 if (mTextView.isInBatchEditMode()) { 3466 return; 3467 } 3468 initDrawables(); 3469 initHandles(); 3470 hideInsertionPointCursorController(); 3471 } 3472 3473 private void initDrawables() { 3474 if (mSelectHandleLeft == null) { 3475 mSelectHandleLeft = mTextView.getContext().getResources().getDrawable( 3476 mTextView.mTextSelectHandleLeftRes); 3477 } 3478 if (mSelectHandleRight == null) { 3479 mSelectHandleRight = mTextView.getContext().getResources().getDrawable( 3480 mTextView.mTextSelectHandleRightRes); 3481 } 3482 } 3483 3484 private void initHandles() { 3485 // Lazy object creation has to be done before updatePosition() is called. 3486 if (mStartHandle == null) { 3487 mStartHandle = new SelectionStartHandleView(mSelectHandleLeft, mSelectHandleRight); 3488 } 3489 if (mEndHandle == null) { 3490 mEndHandle = new SelectionEndHandleView(mSelectHandleRight, mSelectHandleLeft); 3491 } 3492 3493 mStartHandle.show(); 3494 mEndHandle.show(); 3495 3496 // Make sure both left and right handles share the same ActionPopupWindow (so that 3497 // moving any of the handles hides the action popup). 3498 mStartHandle.showActionPopupWindow(DELAY_BEFORE_REPLACE_ACTION); 3499 mEndHandle.setActionPopupWindow(mStartHandle.getActionPopupWindow()); 3500 3501 hideInsertionPointCursorController(); 3502 } 3503 3504 public void hide() { 3505 if (mStartHandle != null) mStartHandle.hide(); 3506 if (mEndHandle != null) mEndHandle.hide(); 3507 } 3508 3509 public void onTouchEvent(MotionEvent event) { 3510 // This is done even when the View does not have focus, so that long presses can start 3511 // selection and tap can move cursor from this tap position. 3512 switch (event.getActionMasked()) { 3513 case MotionEvent.ACTION_DOWN: 3514 final float x = event.getX(); 3515 final float y = event.getY(); 3516 3517 // Remember finger down position, to be able to start selection from there 3518 mMinTouchOffset = mMaxTouchOffset = mTextView.getOffsetForPosition(x, y); 3519 3520 // Double tap detection 3521 if (mGestureStayedInTapRegion) { 3522 long duration = SystemClock.uptimeMillis() - mPreviousTapUpTime; 3523 if (duration <= ViewConfiguration.getDoubleTapTimeout()) { 3524 final float deltaX = x - mDownPositionX; 3525 final float deltaY = y - mDownPositionY; 3526 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3527 3528 ViewConfiguration viewConfiguration = ViewConfiguration.get( 3529 mTextView.getContext()); 3530 int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop(); 3531 boolean stayedInArea = distanceSquared < doubleTapSlop * doubleTapSlop; 3532 3533 if (stayedInArea && isPositionOnText(x, y)) { 3534 startSelectionActionMode(); 3535 mDiscardNextActionUp = true; 3536 } 3537 } 3538 } 3539 3540 mDownPositionX = x; 3541 mDownPositionY = y; 3542 mGestureStayedInTapRegion = true; 3543 break; 3544 3545 case MotionEvent.ACTION_POINTER_DOWN: 3546 case MotionEvent.ACTION_POINTER_UP: 3547 // Handle multi-point gestures. Keep min and max offset positions. 3548 // Only activated for devices that correctly handle multi-touch. 3549 if (mTextView.getContext().getPackageManager().hasSystemFeature( 3550 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { 3551 updateMinAndMaxOffsets(event); 3552 } 3553 break; 3554 3555 case MotionEvent.ACTION_MOVE: 3556 if (mGestureStayedInTapRegion) { 3557 final float deltaX = event.getX() - mDownPositionX; 3558 final float deltaY = event.getY() - mDownPositionY; 3559 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3560 3561 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 3562 mTextView.getContext()); 3563 int doubleTapTouchSlop = viewConfiguration.getScaledDoubleTapTouchSlop(); 3564 3565 if (distanceSquared > doubleTapTouchSlop * doubleTapTouchSlop) { 3566 mGestureStayedInTapRegion = false; 3567 } 3568 } 3569 break; 3570 3571 case MotionEvent.ACTION_UP: 3572 mPreviousTapUpTime = SystemClock.uptimeMillis(); 3573 break; 3574 } 3575 } 3576 3577 /** 3578 * @param event 3579 */ 3580 private void updateMinAndMaxOffsets(MotionEvent event) { 3581 int pointerCount = event.getPointerCount(); 3582 for (int index = 0; index < pointerCount; index++) { 3583 int offset = mTextView.getOffsetForPosition(event.getX(index), event.getY(index)); 3584 if (offset < mMinTouchOffset) mMinTouchOffset = offset; 3585 if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; 3586 } 3587 } 3588 3589 public int getMinTouchOffset() { 3590 return mMinTouchOffset; 3591 } 3592 3593 public int getMaxTouchOffset() { 3594 return mMaxTouchOffset; 3595 } 3596 3597 public void resetTouchOffsets() { 3598 mMinTouchOffset = mMaxTouchOffset = -1; 3599 } 3600 3601 /** 3602 * @return true iff this controller is currently used to move the selection start. 3603 */ 3604 public boolean isSelectionStartDragged() { 3605 return mStartHandle != null && mStartHandle.isDragging(); 3606 } 3607 3608 public void onTouchModeChanged(boolean isInTouchMode) { 3609 if (!isInTouchMode) { 3610 hide(); 3611 } 3612 } 3613 3614 @Override 3615 public void onDetached() { 3616 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 3617 observer.removeOnTouchModeChangeListener(this); 3618 3619 if (mStartHandle != null) mStartHandle.onDetached(); 3620 if (mEndHandle != null) mEndHandle.onDetached(); 3621 } 3622 } 3623 3624 private class CorrectionHighlighter { 3625 private final Path mPath = new Path(); 3626 private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 3627 private int mStart, mEnd; 3628 private long mFadingStartTime; 3629 private RectF mTempRectF; 3630 private final static int FADE_OUT_DURATION = 400; 3631 3632 public CorrectionHighlighter() { 3633 mPaint.setCompatibilityScaling(mTextView.getResources().getCompatibilityInfo(). 3634 applicationScale); 3635 mPaint.setStyle(Paint.Style.FILL); 3636 } 3637 3638 public void highlight(CorrectionInfo info) { 3639 mStart = info.getOffset(); 3640 mEnd = mStart + info.getNewText().length(); 3641 mFadingStartTime = SystemClock.uptimeMillis(); 3642 3643 if (mStart < 0 || mEnd < 0) { 3644 stopAnimation(); 3645 } 3646 } 3647 3648 public void draw(Canvas canvas, int cursorOffsetVertical) { 3649 if (updatePath() && updatePaint()) { 3650 if (cursorOffsetVertical != 0) { 3651 canvas.translate(0, cursorOffsetVertical); 3652 } 3653 3654 canvas.drawPath(mPath, mPaint); 3655 3656 if (cursorOffsetVertical != 0) { 3657 canvas.translate(0, -cursorOffsetVertical); 3658 } 3659 invalidate(true); // TODO invalidate cursor region only 3660 } else { 3661 stopAnimation(); 3662 invalidate(false); // TODO invalidate cursor region only 3663 } 3664 } 3665 3666 private boolean updatePaint() { 3667 final long duration = SystemClock.uptimeMillis() - mFadingStartTime; 3668 if (duration > FADE_OUT_DURATION) return false; 3669 3670 final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; 3671 final int highlightColorAlpha = Color.alpha(mTextView.mHighlightColor); 3672 final int color = (mTextView.mHighlightColor & 0x00FFFFFF) + 3673 ((int) (highlightColorAlpha * coef) << 24); 3674 mPaint.setColor(color); 3675 return true; 3676 } 3677 3678 private boolean updatePath() { 3679 final Layout layout = mTextView.getLayout(); 3680 if (layout == null) return false; 3681 3682 // Update in case text is edited while the animation is run 3683 final int length = mTextView.getText().length(); 3684 int start = Math.min(length, mStart); 3685 int end = Math.min(length, mEnd); 3686 3687 mPath.reset(); 3688 layout.getSelectionPath(start, end, mPath); 3689 return true; 3690 } 3691 3692 private void invalidate(boolean delayed) { 3693 if (mTextView.getLayout() == null) return; 3694 3695 if (mTempRectF == null) mTempRectF = new RectF(); 3696 mPath.computeBounds(mTempRectF, false); 3697 3698 int left = mTextView.getCompoundPaddingLeft(); 3699 int top = mTextView.getExtendedPaddingTop() + mTextView.getVerticalOffset(true); 3700 3701 if (delayed) { 3702 mTextView.postInvalidateOnAnimation( 3703 left + (int) mTempRectF.left, top + (int) mTempRectF.top, 3704 left + (int) mTempRectF.right, top + (int) mTempRectF.bottom); 3705 } else { 3706 mTextView.postInvalidate((int) mTempRectF.left, (int) mTempRectF.top, 3707 (int) mTempRectF.right, (int) mTempRectF.bottom); 3708 } 3709 } 3710 3711 private void stopAnimation() { 3712 Editor.this.mCorrectionHighlighter = null; 3713 } 3714 } 3715 3716 private static class ErrorPopup extends PopupWindow { 3717 private boolean mAbove = false; 3718 private final TextView mView; 3719 private int mPopupInlineErrorBackgroundId = 0; 3720 private int mPopupInlineErrorAboveBackgroundId = 0; 3721 3722 ErrorPopup(TextView v, int width, int height) { 3723 super(v, width, height); 3724 mView = v; 3725 // Make sure the TextView has a background set as it will be used the first time it is 3726 // shown and positionned. Initialized with below background, which should have 3727 // dimensions identical to the above version for this to work (and is more likely). 3728 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 3729 com.android.internal.R.styleable.Theme_errorMessageBackground); 3730 mView.setBackgroundResource(mPopupInlineErrorBackgroundId); 3731 } 3732 3733 void fixDirection(boolean above) { 3734 mAbove = above; 3735 3736 if (above) { 3737 mPopupInlineErrorAboveBackgroundId = 3738 getResourceId(mPopupInlineErrorAboveBackgroundId, 3739 com.android.internal.R.styleable.Theme_errorMessageAboveBackground); 3740 } else { 3741 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 3742 com.android.internal.R.styleable.Theme_errorMessageBackground); 3743 } 3744 3745 mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId : 3746 mPopupInlineErrorBackgroundId); 3747 } 3748 3749 private int getResourceId(int currentId, int index) { 3750 if (currentId == 0) { 3751 TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( 3752 R.styleable.Theme); 3753 currentId = styledAttributes.getResourceId(index, 0); 3754 styledAttributes.recycle(); 3755 } 3756 return currentId; 3757 } 3758 3759 @Override 3760 public void update(int x, int y, int w, int h, boolean force) { 3761 super.update(x, y, w, h, force); 3762 3763 boolean above = isAboveAnchor(); 3764 if (above != mAbove) { 3765 fixDirection(above); 3766 } 3767 } 3768 } 3769 3770 static class InputContentType { 3771 int imeOptions = EditorInfo.IME_NULL; 3772 String privateImeOptions; 3773 CharSequence imeActionLabel; 3774 int imeActionId; 3775 Bundle extras; 3776 OnEditorActionListener onEditorActionListener; 3777 boolean enterDown; 3778 } 3779 3780 static class InputMethodState { 3781 Rect mCursorRectInWindow = new Rect(); 3782 RectF mTmpRectF = new RectF(); 3783 float[] mTmpOffset = new float[2]; 3784 ExtractedTextRequest mExtractedTextRequest; 3785 final ExtractedText mExtractedText = new ExtractedText(); 3786 int mBatchEditNesting; 3787 boolean mCursorChanged; 3788 boolean mSelectionModeChanged; 3789 boolean mContentChanged; 3790 int mChangedStart, mChangedEnd, mChangedDelta; 3791 } 3792 } 3793