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 android.content.UndoManager; 20 import android.content.UndoOperation; 21 import android.content.UndoOwner; 22 import android.os.Parcel; 23 import android.os.Parcelable; 24 import android.text.InputFilter; 25 import android.text.SpannableString; 26 import com.android.internal.util.ArrayUtils; 27 import com.android.internal.widget.EditableInputConnection; 28 29 import android.R; 30 import android.app.PendingIntent; 31 import android.app.PendingIntent.CanceledException; 32 import android.content.ClipData; 33 import android.content.ClipData.Item; 34 import android.content.Context; 35 import android.content.Intent; 36 import android.content.pm.PackageManager; 37 import android.content.res.TypedArray; 38 import android.graphics.Canvas; 39 import android.graphics.Color; 40 import android.graphics.Paint; 41 import android.graphics.Path; 42 import android.graphics.Rect; 43 import android.graphics.RectF; 44 import android.graphics.drawable.Drawable; 45 import android.inputmethodservice.ExtractEditText; 46 import android.os.Bundle; 47 import android.os.Handler; 48 import android.os.Message; 49 import android.os.Messenger; 50 import android.os.SystemClock; 51 import android.provider.Settings; 52 import android.text.DynamicLayout; 53 import android.text.Editable; 54 import android.text.InputType; 55 import android.text.Layout; 56 import android.text.ParcelableSpan; 57 import android.text.Selection; 58 import android.text.SpanWatcher; 59 import android.text.Spannable; 60 import android.text.SpannableStringBuilder; 61 import android.text.Spanned; 62 import android.text.StaticLayout; 63 import android.text.TextUtils; 64 import android.text.method.KeyListener; 65 import android.text.method.MetaKeyKeyListener; 66 import android.text.method.MovementMethod; 67 import android.text.method.PasswordTransformationMethod; 68 import android.text.method.WordIterator; 69 import android.text.style.EasyEditSpan; 70 import android.text.style.SuggestionRangeSpan; 71 import android.text.style.SuggestionSpan; 72 import android.text.style.TextAppearanceSpan; 73 import android.text.style.URLSpan; 74 import android.util.DisplayMetrics; 75 import android.util.Log; 76 import android.view.ActionMode; 77 import android.view.ActionMode.Callback; 78 import android.view.DisplayList; 79 import android.view.DragEvent; 80 import android.view.Gravity; 81 import android.view.HardwareCanvas; 82 import android.view.LayoutInflater; 83 import android.view.Menu; 84 import android.view.MenuItem; 85 import android.view.MotionEvent; 86 import android.view.View; 87 import android.view.View.DragShadowBuilder; 88 import android.view.View.OnClickListener; 89 import android.view.ViewConfiguration; 90 import android.view.ViewGroup; 91 import android.view.ViewGroup.LayoutParams; 92 import android.view.ViewParent; 93 import android.view.ViewTreeObserver; 94 import android.view.WindowManager; 95 import android.view.inputmethod.CorrectionInfo; 96 import android.view.inputmethod.EditorInfo; 97 import android.view.inputmethod.ExtractedText; 98 import android.view.inputmethod.ExtractedTextRequest; 99 import android.view.inputmethod.InputConnection; 100 import android.view.inputmethod.InputMethodManager; 101 import android.widget.AdapterView.OnItemClickListener; 102 import android.widget.TextView.Drawables; 103 import android.widget.TextView.OnEditorActionListener; 104 105 import java.text.BreakIterator; 106 import java.util.Arrays; 107 import java.util.Comparator; 108 import java.util.HashMap; 109 110 /** 111 * Helper class used by TextView to handle editable text views. 112 * 113 * @hide 114 */ 115 public class Editor { 116 private static final String TAG = "Editor"; 117 static final boolean DEBUG_UNDO = false; 118 119 static final int BLINK = 500; 120 private static final float[] TEMP_POSITION = new float[2]; 121 private static int DRAG_SHADOW_MAX_TEXT_LENGTH = 20; 122 123 UndoManager mUndoManager; 124 UndoOwner mUndoOwner; 125 InputFilter mUndoInputFilter; 126 127 // Cursor Controllers. 128 InsertionPointCursorController mInsertionPointCursorController; 129 SelectionModifierCursorController mSelectionModifierCursorController; 130 ActionMode mSelectionActionMode; 131 boolean mInsertionControllerEnabled; 132 boolean mSelectionControllerEnabled; 133 134 // Used to highlight a word when it is corrected by the IME 135 CorrectionHighlighter mCorrectionHighlighter; 136 137 InputContentType mInputContentType; 138 InputMethodState mInputMethodState; 139 140 DisplayList[] mTextDisplayLists; 141 142 boolean mFrozenWithFocus; 143 boolean mSelectionMoved; 144 boolean mTouchFocusSelected; 145 146 KeyListener mKeyListener; 147 int mInputType = EditorInfo.TYPE_NULL; 148 149 boolean mDiscardNextActionUp; 150 boolean mIgnoreActionUpEvent; 151 152 long mShowCursor; 153 Blink mBlink; 154 155 boolean mCursorVisible = true; 156 boolean mSelectAllOnFocus; 157 boolean mTextIsSelectable; 158 159 CharSequence mError; 160 boolean mErrorWasChanged; 161 ErrorPopup mErrorPopup; 162 163 /** 164 * This flag is set if the TextView tries to display an error before it 165 * is attached to the window (so its position is still unknown). 166 * It causes the error to be shown later, when onAttachedToWindow() 167 * is called. 168 */ 169 boolean mShowErrorAfterAttach; 170 171 boolean mInBatchEditControllers; 172 boolean mShowSoftInputOnFocus = true; 173 boolean mPreserveDetachedSelection; 174 boolean mTemporaryDetach; 175 176 SuggestionsPopupWindow mSuggestionsPopupWindow; 177 SuggestionRangeSpan mSuggestionRangeSpan; 178 Runnable mShowSuggestionRunnable; 179 180 final Drawable[] mCursorDrawable = new Drawable[2]; 181 int mCursorCount; // Current number of used mCursorDrawable: 0 (resource=0), 1 or 2 (split) 182 183 private Drawable mSelectHandleLeft; 184 private Drawable mSelectHandleRight; 185 private Drawable mSelectHandleCenter; 186 187 // Global listener that detects changes in the global position of the TextView 188 private PositionListener mPositionListener; 189 190 float mLastDownPositionX, mLastDownPositionY; 191 Callback mCustomSelectionActionModeCallback; 192 193 // Set when this TextView gained focus with some text selected. Will start selection mode. 194 boolean mCreatedWithASelection; 195 196 // The span controller helps monitoring the changes to which the Editor needs to react: 197 // - EasyEditSpans, for which we have some UI to display on attach and on hide 198 // - SelectionSpans, for which we need to call updateSelection if an IME is attached 199 private SpanController mSpanController; 200 201 WordIterator mWordIterator; 202 SpellChecker mSpellChecker; 203 204 private Rect mTempRect; 205 206 private TextView mTextView; 207 208 Editor(TextView textView) { 209 mTextView = textView; 210 } 211 212 void onAttachedToWindow() { 213 if (mShowErrorAfterAttach) { 214 showError(); 215 mShowErrorAfterAttach = false; 216 } 217 mTemporaryDetach = false; 218 219 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 220 // No need to create the controller. 221 // The get method will add the listener on controller creation. 222 if (mInsertionPointCursorController != null) { 223 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 224 } 225 if (mSelectionModifierCursorController != null) { 226 mSelectionModifierCursorController.resetTouchOffsets(); 227 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 228 } 229 updateSpellCheckSpans(0, mTextView.getText().length(), 230 true /* create the spell checker if needed */); 231 232 if (mTextView.hasTransientState() && 233 mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 234 // Since transient state is reference counted make sure it stays matched 235 // with our own calls to it for managing selection. 236 // The action mode callback will set this back again when/if the action mode starts. 237 mTextView.setHasTransientState(false); 238 239 // We had an active selection from before, start the selection mode. 240 startSelectionActionMode(); 241 } 242 } 243 244 void onDetachedFromWindow() { 245 if (mError != null) { 246 hideError(); 247 } 248 249 if (mBlink != null) { 250 mBlink.removeCallbacks(mBlink); 251 } 252 253 if (mInsertionPointCursorController != null) { 254 mInsertionPointCursorController.onDetached(); 255 } 256 257 if (mSelectionModifierCursorController != null) { 258 mSelectionModifierCursorController.onDetached(); 259 } 260 261 if (mShowSuggestionRunnable != null) { 262 mTextView.removeCallbacks(mShowSuggestionRunnable); 263 } 264 265 invalidateTextDisplayList(); 266 267 if (mSpellChecker != null) { 268 mSpellChecker.closeSession(); 269 // Forces the creation of a new SpellChecker next time this window is created. 270 // Will handle the cases where the settings has been changed in the meantime. 271 mSpellChecker = null; 272 } 273 274 mPreserveDetachedSelection = true; 275 hideControllers(); 276 mPreserveDetachedSelection = false; 277 mTemporaryDetach = false; 278 } 279 280 private void showError() { 281 if (mTextView.getWindowToken() == null) { 282 mShowErrorAfterAttach = true; 283 return; 284 } 285 286 if (mErrorPopup == null) { 287 LayoutInflater inflater = LayoutInflater.from(mTextView.getContext()); 288 final TextView err = (TextView) inflater.inflate( 289 com.android.internal.R.layout.textview_hint, null); 290 291 final float scale = mTextView.getResources().getDisplayMetrics().density; 292 mErrorPopup = new ErrorPopup(err, (int)(200 * scale + 0.5f), (int)(50 * scale + 0.5f)); 293 mErrorPopup.setFocusable(false); 294 // The user is entering text, so the input method is needed. We 295 // don't want the popup to be displayed on top of it. 296 mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); 297 } 298 299 TextView tv = (TextView) mErrorPopup.getContentView(); 300 chooseSize(mErrorPopup, mError, tv); 301 tv.setText(mError); 302 303 mErrorPopup.showAsDropDown(mTextView, getErrorX(), getErrorY()); 304 mErrorPopup.fixDirection(mErrorPopup.isAboveAnchor()); 305 } 306 307 public void setError(CharSequence error, Drawable icon) { 308 mError = TextUtils.stringOrSpannedString(error); 309 mErrorWasChanged = true; 310 311 if (mError == null) { 312 setErrorIcon(null); 313 if (mErrorPopup != null) { 314 if (mErrorPopup.isShowing()) { 315 mErrorPopup.dismiss(); 316 } 317 318 mErrorPopup = null; 319 } 320 mShowErrorAfterAttach = false; 321 } else { 322 setErrorIcon(icon); 323 if (mTextView.isFocused()) { 324 showError(); 325 } 326 } 327 } 328 329 private void setErrorIcon(Drawable icon) { 330 Drawables dr = mTextView.mDrawables; 331 if (dr == null) { 332 mTextView.mDrawables = dr = new Drawables(mTextView.getContext()); 333 } 334 dr.setErrorDrawable(icon, mTextView); 335 336 mTextView.resetResolvedDrawables(); 337 mTextView.invalidate(); 338 mTextView.requestLayout(); 339 } 340 341 private void hideError() { 342 if (mErrorPopup != null) { 343 if (mErrorPopup.isShowing()) { 344 mErrorPopup.dismiss(); 345 } 346 } 347 348 mShowErrorAfterAttach = false; 349 } 350 351 /** 352 * Returns the X offset to make the pointy top of the error point 353 * at the middle of the error icon. 354 */ 355 private int getErrorX() { 356 /* 357 * The "25" is the distance between the point and the right edge 358 * of the background 359 */ 360 final float scale = mTextView.getResources().getDisplayMetrics().density; 361 362 final Drawables dr = mTextView.mDrawables; 363 364 final int layoutDirection = mTextView.getLayoutDirection(); 365 int errorX; 366 int offset; 367 switch (layoutDirection) { 368 default: 369 case View.LAYOUT_DIRECTION_LTR: 370 offset = - (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f); 371 errorX = mTextView.getWidth() - mErrorPopup.getWidth() - 372 mTextView.getPaddingRight() + offset; 373 break; 374 case View.LAYOUT_DIRECTION_RTL: 375 offset = (dr != null ? dr.mDrawableSizeLeft : 0) / 2 - (int) (25 * scale + 0.5f); 376 errorX = mTextView.getPaddingLeft() + offset; 377 break; 378 } 379 return errorX; 380 } 381 382 /** 383 * Returns the Y offset to make the pointy top of the error point 384 * at the bottom of the error icon. 385 */ 386 private int getErrorY() { 387 /* 388 * Compound, not extended, because the icon is not clipped 389 * if the text height is smaller. 390 */ 391 final int compoundPaddingTop = mTextView.getCompoundPaddingTop(); 392 int vspace = mTextView.getBottom() - mTextView.getTop() - 393 mTextView.getCompoundPaddingBottom() - compoundPaddingTop; 394 395 final Drawables dr = mTextView.mDrawables; 396 397 final int layoutDirection = mTextView.getLayoutDirection(); 398 int height; 399 switch (layoutDirection) { 400 default: 401 case View.LAYOUT_DIRECTION_LTR: 402 height = (dr != null ? dr.mDrawableHeightRight : 0); 403 break; 404 case View.LAYOUT_DIRECTION_RTL: 405 height = (dr != null ? dr.mDrawableHeightLeft : 0); 406 break; 407 } 408 409 int icontop = compoundPaddingTop + (vspace - height) / 2; 410 411 /* 412 * The "2" is the distance between the point and the top edge 413 * of the background. 414 */ 415 final float scale = mTextView.getResources().getDisplayMetrics().density; 416 return icontop + height - mTextView.getHeight() - (int) (2 * scale + 0.5f); 417 } 418 419 void createInputContentTypeIfNeeded() { 420 if (mInputContentType == null) { 421 mInputContentType = new InputContentType(); 422 } 423 } 424 425 void createInputMethodStateIfNeeded() { 426 if (mInputMethodState == null) { 427 mInputMethodState = new InputMethodState(); 428 } 429 } 430 431 boolean isCursorVisible() { 432 // The default value is true, even when there is no associated Editor 433 return mCursorVisible && mTextView.isTextEditable(); 434 } 435 436 void prepareCursorControllers() { 437 boolean windowSupportsHandles = false; 438 439 ViewGroup.LayoutParams params = mTextView.getRootView().getLayoutParams(); 440 if (params instanceof WindowManager.LayoutParams) { 441 WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params; 442 windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW 443 || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW; 444 } 445 446 boolean enabled = windowSupportsHandles && mTextView.getLayout() != null; 447 mInsertionControllerEnabled = enabled && isCursorVisible(); 448 mSelectionControllerEnabled = enabled && mTextView.textCanBeSelected(); 449 450 if (!mInsertionControllerEnabled) { 451 hideInsertionPointCursorController(); 452 if (mInsertionPointCursorController != null) { 453 mInsertionPointCursorController.onDetached(); 454 mInsertionPointCursorController = null; 455 } 456 } 457 458 if (!mSelectionControllerEnabled) { 459 stopSelectionActionMode(); 460 if (mSelectionModifierCursorController != null) { 461 mSelectionModifierCursorController.onDetached(); 462 mSelectionModifierCursorController = null; 463 } 464 } 465 } 466 467 private void hideInsertionPointCursorController() { 468 if (mInsertionPointCursorController != null) { 469 mInsertionPointCursorController.hide(); 470 } 471 } 472 473 /** 474 * Hides the insertion controller and stops text selection mode, hiding the selection controller 475 */ 476 void hideControllers() { 477 hideCursorControllers(); 478 hideSpanControllers(); 479 } 480 481 private void hideSpanControllers() { 482 if (mSpanController != null) { 483 mSpanController.hide(); 484 } 485 } 486 487 private void hideCursorControllers() { 488 if (mSuggestionsPopupWindow != null && !mSuggestionsPopupWindow.isShowingUp()) { 489 // Should be done before hide insertion point controller since it triggers a show of it 490 mSuggestionsPopupWindow.hide(); 491 } 492 hideInsertionPointCursorController(); 493 stopSelectionActionMode(); 494 } 495 496 /** 497 * Create new SpellCheckSpans on the modified region. 498 */ 499 private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) { 500 // Remove spans whose adjacent characters are text not punctuation 501 mTextView.removeAdjacentSuggestionSpans(start); 502 mTextView.removeAdjacentSuggestionSpans(end); 503 504 if (mTextView.isTextEditable() && mTextView.isSuggestionsEnabled() && 505 !(mTextView instanceof ExtractEditText)) { 506 if (mSpellChecker == null && createSpellChecker) { 507 mSpellChecker = new SpellChecker(mTextView); 508 } 509 if (mSpellChecker != null) { 510 mSpellChecker.spellCheck(start, end); 511 } 512 } 513 } 514 515 void onScreenStateChanged(int screenState) { 516 switch (screenState) { 517 case View.SCREEN_STATE_ON: 518 resumeBlink(); 519 break; 520 case View.SCREEN_STATE_OFF: 521 suspendBlink(); 522 break; 523 } 524 } 525 526 private void suspendBlink() { 527 if (mBlink != null) { 528 mBlink.cancel(); 529 } 530 } 531 532 private void resumeBlink() { 533 if (mBlink != null) { 534 mBlink.uncancel(); 535 makeBlink(); 536 } 537 } 538 539 void adjustInputType(boolean password, boolean passwordInputType, 540 boolean webPasswordInputType, boolean numberPasswordInputType) { 541 // mInputType has been set from inputType, possibly modified by mInputMethod. 542 // Specialize mInputType to [web]password if we have a text class and the original input 543 // type was a password. 544 if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 545 if (password || passwordInputType) { 546 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 547 | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD; 548 } 549 if (webPasswordInputType) { 550 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 551 | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 552 } 553 } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) { 554 if (numberPasswordInputType) { 555 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 556 | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD; 557 } 558 } 559 } 560 561 private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) { 562 int wid = tv.getPaddingLeft() + tv.getPaddingRight(); 563 int ht = tv.getPaddingTop() + tv.getPaddingBottom(); 564 565 int defaultWidthInPixels = mTextView.getResources().getDimensionPixelSize( 566 com.android.internal.R.dimen.textview_error_popup_default_width); 567 Layout l = new StaticLayout(text, tv.getPaint(), defaultWidthInPixels, 568 Layout.Alignment.ALIGN_NORMAL, 1, 0, true); 569 float max = 0; 570 for (int i = 0; i < l.getLineCount(); i++) { 571 max = Math.max(max, l.getLineWidth(i)); 572 } 573 574 /* 575 * Now set the popup size to be big enough for the text plus the border capped 576 * to DEFAULT_MAX_POPUP_WIDTH 577 */ 578 pop.setWidth(wid + (int) Math.ceil(max)); 579 pop.setHeight(ht + l.getHeight()); 580 } 581 582 void setFrame() { 583 if (mErrorPopup != null) { 584 TextView tv = (TextView) mErrorPopup.getContentView(); 585 chooseSize(mErrorPopup, mError, tv); 586 mErrorPopup.update(mTextView, getErrorX(), getErrorY(), 587 mErrorPopup.getWidth(), mErrorPopup.getHeight()); 588 } 589 } 590 591 /** 592 * Unlike {@link TextView#textCanBeSelected()}, this method is based on the <i>current</i> state 593 * of the TextView. textCanBeSelected() has to be true (this is one of the conditions to have 594 * a selection controller (see {@link #prepareCursorControllers()}), but this is not sufficient. 595 */ 596 private boolean canSelectText() { 597 return hasSelectionController() && mTextView.getText().length() != 0; 598 } 599 600 /** 601 * It would be better to rely on the input type for everything. A password inputType should have 602 * a password transformation. We should hence use isPasswordInputType instead of this method. 603 * 604 * We should: 605 * - Call setInputType in setKeyListener instead of changing the input type directly (which 606 * would install the correct transformation). 607 * - Refuse the installation of a non-password transformation in setTransformation if the input 608 * type is password. 609 * 610 * However, this is like this for legacy reasons and we cannot break existing apps. This method 611 * is useful since it matches what the user can see (obfuscated text or not). 612 * 613 * @return true if the current transformation method is of the password type. 614 */ 615 private boolean hasPasswordTransformationMethod() { 616 return mTextView.getTransformationMethod() instanceof PasswordTransformationMethod; 617 } 618 619 /** 620 * Adjusts selection to the word under last touch offset. 621 * Return true if the operation was successfully performed. 622 */ 623 private boolean selectCurrentWord() { 624 if (!canSelectText()) { 625 return false; 626 } 627 628 if (hasPasswordTransformationMethod()) { 629 // Always select all on a password field. 630 // Cut/copy menu entries are not available for passwords, but being able to select all 631 // is however useful to delete or paste to replace the entire content. 632 return mTextView.selectAllText(); 633 } 634 635 int inputType = mTextView.getInputType(); 636 int klass = inputType & InputType.TYPE_MASK_CLASS; 637 int variation = inputType & InputType.TYPE_MASK_VARIATION; 638 639 // Specific text field types: select the entire text for these 640 if (klass == InputType.TYPE_CLASS_NUMBER || 641 klass == InputType.TYPE_CLASS_PHONE || 642 klass == InputType.TYPE_CLASS_DATETIME || 643 variation == InputType.TYPE_TEXT_VARIATION_URI || 644 variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS || 645 variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS || 646 variation == InputType.TYPE_TEXT_VARIATION_FILTER) { 647 return mTextView.selectAllText(); 648 } 649 650 long lastTouchOffsets = getLastTouchOffsets(); 651 final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 652 final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 653 654 // Safety check in case standard touch event handling has been bypassed 655 if (minOffset < 0 || minOffset >= mTextView.getText().length()) return false; 656 if (maxOffset < 0 || maxOffset >= mTextView.getText().length()) return false; 657 658 int selectionStart, selectionEnd; 659 660 // If a URLSpan (web address, email, phone...) is found at that position, select it. 661 URLSpan[] urlSpans = ((Spanned) mTextView.getText()). 662 getSpans(minOffset, maxOffset, URLSpan.class); 663 if (urlSpans.length >= 1) { 664 URLSpan urlSpan = urlSpans[0]; 665 selectionStart = ((Spanned) mTextView.getText()).getSpanStart(urlSpan); 666 selectionEnd = ((Spanned) mTextView.getText()).getSpanEnd(urlSpan); 667 } else { 668 final WordIterator wordIterator = getWordIterator(); 669 wordIterator.setCharSequence(mTextView.getText(), minOffset, maxOffset); 670 671 selectionStart = wordIterator.getBeginning(minOffset); 672 selectionEnd = wordIterator.getEnd(maxOffset); 673 674 if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE || 675 selectionStart == selectionEnd) { 676 // Possible when the word iterator does not properly handle the text's language 677 long range = getCharRange(minOffset); 678 selectionStart = TextUtils.unpackRangeStartFromLong(range); 679 selectionEnd = TextUtils.unpackRangeEndFromLong(range); 680 } 681 } 682 683 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 684 return selectionEnd > selectionStart; 685 } 686 687 void onLocaleChanged() { 688 // Will be re-created on demand in getWordIterator with the proper new locale 689 mWordIterator = null; 690 } 691 692 /** 693 * @hide 694 */ 695 public WordIterator getWordIterator() { 696 if (mWordIterator == null) { 697 mWordIterator = new WordIterator(mTextView.getTextServicesLocale()); 698 } 699 return mWordIterator; 700 } 701 702 private long getCharRange(int offset) { 703 final int textLength = mTextView.getText().length(); 704 if (offset + 1 < textLength) { 705 final char currentChar = mTextView.getText().charAt(offset); 706 final char nextChar = mTextView.getText().charAt(offset + 1); 707 if (Character.isSurrogatePair(currentChar, nextChar)) { 708 return TextUtils.packRangeInLong(offset, offset + 2); 709 } 710 } 711 if (offset < textLength) { 712 return TextUtils.packRangeInLong(offset, offset + 1); 713 } 714 if (offset - 2 >= 0) { 715 final char previousChar = mTextView.getText().charAt(offset - 1); 716 final char previousPreviousChar = mTextView.getText().charAt(offset - 2); 717 if (Character.isSurrogatePair(previousPreviousChar, previousChar)) { 718 return TextUtils.packRangeInLong(offset - 2, offset); 719 } 720 } 721 if (offset - 1 >= 0) { 722 return TextUtils.packRangeInLong(offset - 1, offset); 723 } 724 return TextUtils.packRangeInLong(offset, offset); 725 } 726 727 private boolean touchPositionIsInSelection() { 728 int selectionStart = mTextView.getSelectionStart(); 729 int selectionEnd = mTextView.getSelectionEnd(); 730 731 if (selectionStart == selectionEnd) { 732 return false; 733 } 734 735 if (selectionStart > selectionEnd) { 736 int tmp = selectionStart; 737 selectionStart = selectionEnd; 738 selectionEnd = tmp; 739 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 740 } 741 742 SelectionModifierCursorController selectionController = getSelectionController(); 743 int minOffset = selectionController.getMinTouchOffset(); 744 int maxOffset = selectionController.getMaxTouchOffset(); 745 746 return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); 747 } 748 749 private PositionListener getPositionListener() { 750 if (mPositionListener == null) { 751 mPositionListener = new PositionListener(); 752 } 753 return mPositionListener; 754 } 755 756 private interface TextViewPositionListener { 757 public void updatePosition(int parentPositionX, int parentPositionY, 758 boolean parentPositionChanged, boolean parentScrolled); 759 } 760 761 private boolean isPositionVisible(int positionX, int positionY) { 762 synchronized (TEMP_POSITION) { 763 final float[] position = TEMP_POSITION; 764 position[0] = positionX; 765 position[1] = positionY; 766 View view = mTextView; 767 768 while (view != null) { 769 if (view != mTextView) { 770 // Local scroll is already taken into account in positionX/Y 771 position[0] -= view.getScrollX(); 772 position[1] -= view.getScrollY(); 773 } 774 775 if (position[0] < 0 || position[1] < 0 || 776 position[0] > view.getWidth() || position[1] > view.getHeight()) { 777 return false; 778 } 779 780 if (!view.getMatrix().isIdentity()) { 781 view.getMatrix().mapPoints(position); 782 } 783 784 position[0] += view.getLeft(); 785 position[1] += view.getTop(); 786 787 final ViewParent parent = view.getParent(); 788 if (parent instanceof View) { 789 view = (View) parent; 790 } else { 791 // We've reached the ViewRoot, stop iterating 792 view = null; 793 } 794 } 795 } 796 797 // We've been able to walk up the view hierarchy and the position was never clipped 798 return true; 799 } 800 801 private boolean isOffsetVisible(int offset) { 802 Layout layout = mTextView.getLayout(); 803 if (layout == null) return false; 804 805 final int line = layout.getLineForOffset(offset); 806 final int lineBottom = layout.getLineBottom(line); 807 final int primaryHorizontal = (int) layout.getPrimaryHorizontal(offset); 808 return isPositionVisible(primaryHorizontal + mTextView.viewportToContentHorizontalOffset(), 809 lineBottom + mTextView.viewportToContentVerticalOffset()); 810 } 811 812 /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed 813 * in the view. Returns false when the position is in the empty space of left/right of text. 814 */ 815 private boolean isPositionOnText(float x, float y) { 816 Layout layout = mTextView.getLayout(); 817 if (layout == null) return false; 818 819 final int line = mTextView.getLineAtCoordinate(y); 820 x = mTextView.convertToLocalHorizontalCoordinate(x); 821 822 if (x < layout.getLineLeft(line)) return false; 823 if (x > layout.getLineRight(line)) return false; 824 return true; 825 } 826 827 public boolean performLongClick(boolean handled) { 828 // Long press in empty space moves cursor and shows the Paste affordance if available. 829 if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) && 830 mInsertionControllerEnabled) { 831 final int offset = mTextView.getOffsetForPosition(mLastDownPositionX, 832 mLastDownPositionY); 833 stopSelectionActionMode(); 834 Selection.setSelection((Spannable) mTextView.getText(), offset); 835 getInsertionController().showWithActionPopup(); 836 handled = true; 837 } 838 839 if (!handled && mSelectionActionMode != null) { 840 if (touchPositionIsInSelection()) { 841 // Start a drag 842 final int start = mTextView.getSelectionStart(); 843 final int end = mTextView.getSelectionEnd(); 844 CharSequence selectedText = mTextView.getTransformedText(start, end); 845 ClipData data = ClipData.newPlainText(null, selectedText); 846 DragLocalState localState = new DragLocalState(mTextView, start, end); 847 mTextView.startDrag(data, getTextThumbnailBuilder(selectedText), localState, 0); 848 stopSelectionActionMode(); 849 } else { 850 getSelectionController().hide(); 851 selectCurrentWord(); 852 getSelectionController().show(); 853 } 854 handled = true; 855 } 856 857 // Start a new selection 858 if (!handled) { 859 handled = startSelectionActionMode(); 860 } 861 862 return handled; 863 } 864 865 private long getLastTouchOffsets() { 866 SelectionModifierCursorController selectionController = getSelectionController(); 867 final int minOffset = selectionController.getMinTouchOffset(); 868 final int maxOffset = selectionController.getMaxTouchOffset(); 869 return TextUtils.packRangeInLong(minOffset, maxOffset); 870 } 871 872 void onFocusChanged(boolean focused, int direction) { 873 mShowCursor = SystemClock.uptimeMillis(); 874 ensureEndedBatchEdit(); 875 876 if (focused) { 877 int selStart = mTextView.getSelectionStart(); 878 int selEnd = mTextView.getSelectionEnd(); 879 880 // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection 881 // mode for these, unless there was a specific selection already started. 882 final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 && 883 selEnd == mTextView.getText().length(); 884 885 mCreatedWithASelection = mFrozenWithFocus && mTextView.hasSelection() && 886 !isFocusHighlighted; 887 888 if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { 889 // If a tap was used to give focus to that view, move cursor at tap position. 890 // Has to be done before onTakeFocus, which can be overloaded. 891 final int lastTapPosition = getLastTapPosition(); 892 if (lastTapPosition >= 0) { 893 Selection.setSelection((Spannable) mTextView.getText(), lastTapPosition); 894 } 895 896 // Note this may have to be moved out of the Editor class 897 MovementMethod mMovement = mTextView.getMovementMethod(); 898 if (mMovement != null) { 899 mMovement.onTakeFocus(mTextView, (Spannable) mTextView.getText(), direction); 900 } 901 902 // The DecorView does not have focus when the 'Done' ExtractEditText button is 903 // pressed. Since it is the ViewAncestor's mView, it requests focus before 904 // ExtractEditText clears focus, which gives focus to the ExtractEditText. 905 // This special case ensure that we keep current selection in that case. 906 // It would be better to know why the DecorView does not have focus at that time. 907 if (((mTextView instanceof ExtractEditText) || mSelectionMoved) && 908 selStart >= 0 && selEnd >= 0) { 909 /* 910 * Someone intentionally set the selection, so let them 911 * do whatever it is that they wanted to do instead of 912 * the default on-focus behavior. We reset the selection 913 * here instead of just skipping the onTakeFocus() call 914 * because some movement methods do something other than 915 * just setting the selection in theirs and we still 916 * need to go through that path. 917 */ 918 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 919 } 920 921 if (mSelectAllOnFocus) { 922 mTextView.selectAllText(); 923 } 924 925 mTouchFocusSelected = true; 926 } 927 928 mFrozenWithFocus = false; 929 mSelectionMoved = false; 930 931 if (mError != null) { 932 showError(); 933 } 934 935 makeBlink(); 936 } else { 937 if (mError != null) { 938 hideError(); 939 } 940 // Don't leave us in the middle of a batch edit. 941 mTextView.onEndBatchEdit(); 942 943 if (mTextView instanceof ExtractEditText) { 944 // terminateTextSelectionMode removes selection, which we want to keep when 945 // ExtractEditText goes out of focus. 946 final int selStart = mTextView.getSelectionStart(); 947 final int selEnd = mTextView.getSelectionEnd(); 948 hideControllers(); 949 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 950 } else { 951 if (mTemporaryDetach) mPreserveDetachedSelection = true; 952 hideControllers(); 953 if (mTemporaryDetach) mPreserveDetachedSelection = false; 954 downgradeEasyCorrectionSpans(); 955 } 956 957 // No need to create the controller 958 if (mSelectionModifierCursorController != null) { 959 mSelectionModifierCursorController.resetTouchOffsets(); 960 } 961 } 962 } 963 964 /** 965 * Downgrades to simple suggestions all the easy correction spans that are not a spell check 966 * span. 967 */ 968 private void downgradeEasyCorrectionSpans() { 969 CharSequence text = mTextView.getText(); 970 if (text instanceof Spannable) { 971 Spannable spannable = (Spannable) text; 972 SuggestionSpan[] suggestionSpans = spannable.getSpans(0, 973 spannable.length(), SuggestionSpan.class); 974 for (int i = 0; i < suggestionSpans.length; i++) { 975 int flags = suggestionSpans[i].getFlags(); 976 if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0 977 && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) { 978 flags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 979 suggestionSpans[i].setFlags(flags); 980 } 981 } 982 } 983 } 984 985 void sendOnTextChanged(int start, int after) { 986 updateSpellCheckSpans(start, start + after, false); 987 988 // Hide the controllers as soon as text is modified (typing, procedural...) 989 // We do not hide the span controllers, since they can be added when a new text is 990 // inserted into the text view (voice IME). 991 hideCursorControllers(); 992 } 993 994 private int getLastTapPosition() { 995 // No need to create the controller at that point, no last tap position saved 996 if (mSelectionModifierCursorController != null) { 997 int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); 998 if (lastTapPosition >= 0) { 999 // Safety check, should not be possible. 1000 if (lastTapPosition > mTextView.getText().length()) { 1001 lastTapPosition = mTextView.getText().length(); 1002 } 1003 return lastTapPosition; 1004 } 1005 } 1006 1007 return -1; 1008 } 1009 1010 void onWindowFocusChanged(boolean hasWindowFocus) { 1011 if (hasWindowFocus) { 1012 if (mBlink != null) { 1013 mBlink.uncancel(); 1014 makeBlink(); 1015 } 1016 } else { 1017 if (mBlink != null) { 1018 mBlink.cancel(); 1019 } 1020 if (mInputContentType != null) { 1021 mInputContentType.enterDown = false; 1022 } 1023 // Order matters! Must be done before onParentLostFocus to rely on isShowingUp 1024 hideControllers(); 1025 if (mSuggestionsPopupWindow != null) { 1026 mSuggestionsPopupWindow.onParentLostFocus(); 1027 } 1028 1029 // Don't leave us in the middle of a batch edit. Same as in onFocusChanged 1030 ensureEndedBatchEdit(); 1031 } 1032 } 1033 1034 void onTouchEvent(MotionEvent event) { 1035 if (hasSelectionController()) { 1036 getSelectionController().onTouchEvent(event); 1037 } 1038 1039 if (mShowSuggestionRunnable != null) { 1040 mTextView.removeCallbacks(mShowSuggestionRunnable); 1041 mShowSuggestionRunnable = null; 1042 } 1043 1044 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 1045 mLastDownPositionX = event.getX(); 1046 mLastDownPositionY = event.getY(); 1047 1048 // Reset this state; it will be re-set if super.onTouchEvent 1049 // causes focus to move to the view. 1050 mTouchFocusSelected = false; 1051 mIgnoreActionUpEvent = false; 1052 } 1053 } 1054 1055 public void beginBatchEdit() { 1056 mInBatchEditControllers = true; 1057 final InputMethodState ims = mInputMethodState; 1058 if (ims != null) { 1059 int nesting = ++ims.mBatchEditNesting; 1060 if (nesting == 1) { 1061 ims.mCursorChanged = false; 1062 ims.mChangedDelta = 0; 1063 if (ims.mContentChanged) { 1064 // We already have a pending change from somewhere else, 1065 // so turn this into a full update. 1066 ims.mChangedStart = 0; 1067 ims.mChangedEnd = mTextView.getText().length(); 1068 } else { 1069 ims.mChangedStart = EXTRACT_UNKNOWN; 1070 ims.mChangedEnd = EXTRACT_UNKNOWN; 1071 ims.mContentChanged = false; 1072 } 1073 mTextView.onBeginBatchEdit(); 1074 } 1075 } 1076 } 1077 1078 public void endBatchEdit() { 1079 mInBatchEditControllers = false; 1080 final InputMethodState ims = mInputMethodState; 1081 if (ims != null) { 1082 int nesting = --ims.mBatchEditNesting; 1083 if (nesting == 0) { 1084 finishBatchEdit(ims); 1085 } 1086 } 1087 } 1088 1089 void ensureEndedBatchEdit() { 1090 final InputMethodState ims = mInputMethodState; 1091 if (ims != null && ims.mBatchEditNesting != 0) { 1092 ims.mBatchEditNesting = 0; 1093 finishBatchEdit(ims); 1094 } 1095 } 1096 1097 void finishBatchEdit(final InputMethodState ims) { 1098 mTextView.onEndBatchEdit(); 1099 1100 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1101 mTextView.updateAfterEdit(); 1102 reportExtractedText(); 1103 } else if (ims.mCursorChanged) { 1104 // Cheesy way to get us to report the current cursor location. 1105 mTextView.invalidateCursor(); 1106 } 1107 // sendUpdateSelection knows to avoid sending if the selection did 1108 // not actually change. 1109 sendUpdateSelection(); 1110 } 1111 1112 static final int EXTRACT_NOTHING = -2; 1113 static final int EXTRACT_UNKNOWN = -1; 1114 1115 boolean extractText(ExtractedTextRequest request, ExtractedText outText) { 1116 return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, 1117 EXTRACT_UNKNOWN, outText); 1118 } 1119 1120 private boolean extractTextInternal(ExtractedTextRequest request, 1121 int partialStartOffset, int partialEndOffset, int delta, 1122 ExtractedText outText) { 1123 final CharSequence content = mTextView.getText(); 1124 if (content != null) { 1125 if (partialStartOffset != EXTRACT_NOTHING) { 1126 final int N = content.length(); 1127 if (partialStartOffset < 0) { 1128 outText.partialStartOffset = outText.partialEndOffset = -1; 1129 partialStartOffset = 0; 1130 partialEndOffset = N; 1131 } else { 1132 // Now use the delta to determine the actual amount of text 1133 // we need. 1134 partialEndOffset += delta; 1135 // Adjust offsets to ensure we contain full spans. 1136 if (content instanceof Spanned) { 1137 Spanned spanned = (Spanned)content; 1138 Object[] spans = spanned.getSpans(partialStartOffset, 1139 partialEndOffset, ParcelableSpan.class); 1140 int i = spans.length; 1141 while (i > 0) { 1142 i--; 1143 int j = spanned.getSpanStart(spans[i]); 1144 if (j < partialStartOffset) partialStartOffset = j; 1145 j = spanned.getSpanEnd(spans[i]); 1146 if (j > partialEndOffset) partialEndOffset = j; 1147 } 1148 } 1149 outText.partialStartOffset = partialStartOffset; 1150 outText.partialEndOffset = partialEndOffset - delta; 1151 1152 if (partialStartOffset > N) { 1153 partialStartOffset = N; 1154 } else if (partialStartOffset < 0) { 1155 partialStartOffset = 0; 1156 } 1157 if (partialEndOffset > N) { 1158 partialEndOffset = N; 1159 } else if (partialEndOffset < 0) { 1160 partialEndOffset = 0; 1161 } 1162 } 1163 if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) { 1164 outText.text = content.subSequence(partialStartOffset, 1165 partialEndOffset); 1166 } else { 1167 outText.text = TextUtils.substring(content, partialStartOffset, 1168 partialEndOffset); 1169 } 1170 } else { 1171 outText.partialStartOffset = 0; 1172 outText.partialEndOffset = 0; 1173 outText.text = ""; 1174 } 1175 outText.flags = 0; 1176 if (MetaKeyKeyListener.getMetaState(content, MetaKeyKeyListener.META_SELECTING) != 0) { 1177 outText.flags |= ExtractedText.FLAG_SELECTING; 1178 } 1179 if (mTextView.isSingleLine()) { 1180 outText.flags |= ExtractedText.FLAG_SINGLE_LINE; 1181 } 1182 outText.startOffset = 0; 1183 outText.selectionStart = mTextView.getSelectionStart(); 1184 outText.selectionEnd = mTextView.getSelectionEnd(); 1185 return true; 1186 } 1187 return false; 1188 } 1189 1190 boolean reportExtractedText() { 1191 final Editor.InputMethodState ims = mInputMethodState; 1192 if (ims != null) { 1193 final boolean contentChanged = ims.mContentChanged; 1194 if (contentChanged || ims.mSelectionModeChanged) { 1195 ims.mContentChanged = false; 1196 ims.mSelectionModeChanged = false; 1197 final ExtractedTextRequest req = ims.mExtractedTextRequest; 1198 if (req != null) { 1199 InputMethodManager imm = InputMethodManager.peekInstance(); 1200 if (imm != null) { 1201 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1202 "Retrieving extracted start=" + ims.mChangedStart + 1203 " end=" + ims.mChangedEnd + 1204 " delta=" + ims.mChangedDelta); 1205 if (ims.mChangedStart < 0 && !contentChanged) { 1206 ims.mChangedStart = EXTRACT_NOTHING; 1207 } 1208 if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, 1209 ims.mChangedDelta, ims.mExtractedText)) { 1210 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1211 "Reporting extracted start=" + 1212 ims.mExtractedText.partialStartOffset + 1213 " end=" + ims.mExtractedText.partialEndOffset + 1214 ": " + ims.mExtractedText.text); 1215 1216 imm.updateExtractedText(mTextView, req.token, ims.mExtractedText); 1217 ims.mChangedStart = EXTRACT_UNKNOWN; 1218 ims.mChangedEnd = EXTRACT_UNKNOWN; 1219 ims.mChangedDelta = 0; 1220 ims.mContentChanged = false; 1221 return true; 1222 } 1223 } 1224 } 1225 } 1226 } 1227 return false; 1228 } 1229 1230 private void sendUpdateSelection() { 1231 if (null != mInputMethodState && mInputMethodState.mBatchEditNesting <= 0) { 1232 final InputMethodManager imm = InputMethodManager.peekInstance(); 1233 if (null != imm) { 1234 final int selectionStart = mTextView.getSelectionStart(); 1235 final int selectionEnd = mTextView.getSelectionEnd(); 1236 int candStart = -1; 1237 int candEnd = -1; 1238 if (mTextView.getText() instanceof Spannable) { 1239 final Spannable sp = (Spannable) mTextView.getText(); 1240 candStart = EditableInputConnection.getComposingSpanStart(sp); 1241 candEnd = EditableInputConnection.getComposingSpanEnd(sp); 1242 } 1243 // InputMethodManager#updateSelection skips sending the message if 1244 // none of the parameters have changed since the last time we called it. 1245 imm.updateSelection(mTextView, 1246 selectionStart, selectionEnd, candStart, candEnd); 1247 } 1248 } 1249 } 1250 1251 void onDraw(Canvas canvas, Layout layout, Path highlight, Paint highlightPaint, 1252 int cursorOffsetVertical) { 1253 final int selectionStart = mTextView.getSelectionStart(); 1254 final int selectionEnd = mTextView.getSelectionEnd(); 1255 1256 final InputMethodState ims = mInputMethodState; 1257 if (ims != null && ims.mBatchEditNesting == 0) { 1258 InputMethodManager imm = InputMethodManager.peekInstance(); 1259 if (imm != null) { 1260 if (imm.isActive(mTextView)) { 1261 boolean reported = false; 1262 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1263 // We are in extract mode and the content has changed 1264 // in some way... just report complete new text to the 1265 // input method. 1266 reported = reportExtractedText(); 1267 } 1268 } 1269 1270 if (imm.isWatchingCursor(mTextView) && highlight != null) { 1271 highlight.computeBounds(ims.mTmpRectF, true); 1272 ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0; 1273 1274 canvas.getMatrix().mapPoints(ims.mTmpOffset); 1275 ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]); 1276 1277 ims.mTmpRectF.offset(0, cursorOffsetVertical); 1278 1279 ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5), 1280 (int)(ims.mTmpRectF.top + 0.5), 1281 (int)(ims.mTmpRectF.right + 0.5), 1282 (int)(ims.mTmpRectF.bottom + 0.5)); 1283 1284 imm.updateCursor(mTextView, 1285 ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top, 1286 ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom); 1287 } 1288 } 1289 } 1290 1291 if (mCorrectionHighlighter != null) { 1292 mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); 1293 } 1294 1295 if (highlight != null && selectionStart == selectionEnd && mCursorCount > 0) { 1296 drawCursor(canvas, cursorOffsetVertical); 1297 // Rely on the drawable entirely, do not draw the cursor line. 1298 // Has to be done after the IMM related code above which relies on the highlight. 1299 highlight = null; 1300 } 1301 1302 if (mTextView.canHaveDisplayList() && canvas.isHardwareAccelerated()) { 1303 drawHardwareAccelerated(canvas, layout, highlight, highlightPaint, 1304 cursorOffsetVertical); 1305 } else { 1306 layout.draw(canvas, highlight, highlightPaint, cursorOffsetVertical); 1307 } 1308 } 1309 1310 private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight, 1311 Paint highlightPaint, int cursorOffsetVertical) { 1312 final long lineRange = layout.getLineRangeForDraw(canvas); 1313 int firstLine = TextUtils.unpackRangeStartFromLong(lineRange); 1314 int lastLine = TextUtils.unpackRangeEndFromLong(lineRange); 1315 if (lastLine < 0) return; 1316 1317 layout.drawBackground(canvas, highlight, highlightPaint, cursorOffsetVertical, 1318 firstLine, lastLine); 1319 1320 if (layout instanceof DynamicLayout) { 1321 if (mTextDisplayLists == null) { 1322 mTextDisplayLists = new DisplayList[ArrayUtils.idealObjectArraySize(0)]; 1323 } 1324 1325 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1326 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1327 int[] blockIndices = dynamicLayout.getBlockIndices(); 1328 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1329 final int indexFirstChangedBlock = dynamicLayout.getIndexFirstChangedBlock(); 1330 1331 int endOfPreviousBlock = -1; 1332 int searchStartIndex = 0; 1333 for (int i = 0; i < numberOfBlocks; i++) { 1334 int blockEndLine = blockEndLines[i]; 1335 int blockIndex = blockIndices[i]; 1336 1337 final boolean blockIsInvalid = blockIndex == DynamicLayout.INVALID_BLOCK_INDEX; 1338 if (blockIsInvalid) { 1339 blockIndex = getAvailableDisplayListIndex(blockIndices, numberOfBlocks, 1340 searchStartIndex); 1341 // Note how dynamic layout's internal block indices get updated from Editor 1342 blockIndices[i] = blockIndex; 1343 searchStartIndex = blockIndex + 1; 1344 } 1345 1346 DisplayList blockDisplayList = mTextDisplayLists[blockIndex]; 1347 if (blockDisplayList == null) { 1348 blockDisplayList = mTextDisplayLists[blockIndex] = 1349 mTextView.getHardwareRenderer().createDisplayList("Text " + blockIndex); 1350 } else { 1351 if (blockIsInvalid) blockDisplayList.clear(); 1352 } 1353 1354 final boolean blockDisplayListIsInvalid = !blockDisplayList.isValid(); 1355 if (i >= indexFirstChangedBlock || blockDisplayListIsInvalid) { 1356 final int blockBeginLine = endOfPreviousBlock + 1; 1357 final int top = layout.getLineTop(blockBeginLine); 1358 final int bottom = layout.getLineBottom(blockEndLine); 1359 int left = 0; 1360 int right = mTextView.getWidth(); 1361 if (mTextView.getHorizontallyScrolling()) { 1362 float min = Float.MAX_VALUE; 1363 float max = Float.MIN_VALUE; 1364 for (int line = blockBeginLine; line <= blockEndLine; line++) { 1365 min = Math.min(min, layout.getLineLeft(line)); 1366 max = Math.max(max, layout.getLineRight(line)); 1367 } 1368 left = (int) min; 1369 right = (int) (max + 0.5f); 1370 } 1371 1372 // Rebuild display list if it is invalid 1373 if (blockDisplayListIsInvalid) { 1374 final HardwareCanvas hardwareCanvas = blockDisplayList.start( 1375 right - left, bottom - top); 1376 try { 1377 // drawText is always relative to TextView's origin, this translation 1378 // brings this range of text back to the top left corner of the viewport 1379 hardwareCanvas.translate(-left, -top); 1380 layout.drawText(hardwareCanvas, blockBeginLine, blockEndLine); 1381 // No need to untranslate, previous context is popped after 1382 // drawDisplayList 1383 } finally { 1384 blockDisplayList.end(); 1385 // Same as drawDisplayList below, handled by our TextView's parent 1386 blockDisplayList.setClipToBounds(false); 1387 } 1388 } 1389 1390 // Valid disply list whose index is >= indexFirstChangedBlock 1391 // only needs to update its drawing location. 1392 blockDisplayList.setLeftTopRightBottom(left, top, right, bottom); 1393 } 1394 1395 ((HardwareCanvas) canvas).drawDisplayList(blockDisplayList, null, 1396 0 /* no child clipping, our TextView parent enforces it */); 1397 1398 endOfPreviousBlock = blockEndLine; 1399 } 1400 1401 dynamicLayout.setIndexFirstChangedBlock(numberOfBlocks); 1402 } else { 1403 // Boring layout is used for empty and hint text 1404 layout.drawText(canvas, firstLine, lastLine); 1405 } 1406 } 1407 1408 private int getAvailableDisplayListIndex(int[] blockIndices, int numberOfBlocks, 1409 int searchStartIndex) { 1410 int length = mTextDisplayLists.length; 1411 for (int i = searchStartIndex; i < length; i++) { 1412 boolean blockIndexFound = false; 1413 for (int j = 0; j < numberOfBlocks; j++) { 1414 if (blockIndices[j] == i) { 1415 blockIndexFound = true; 1416 break; 1417 } 1418 } 1419 if (blockIndexFound) continue; 1420 return i; 1421 } 1422 1423 // No available index found, the pool has to grow 1424 int newSize = ArrayUtils.idealIntArraySize(length + 1); 1425 DisplayList[] displayLists = new DisplayList[newSize]; 1426 System.arraycopy(mTextDisplayLists, 0, displayLists, 0, length); 1427 mTextDisplayLists = displayLists; 1428 return length; 1429 } 1430 1431 private void drawCursor(Canvas canvas, int cursorOffsetVertical) { 1432 final boolean translate = cursorOffsetVertical != 0; 1433 if (translate) canvas.translate(0, cursorOffsetVertical); 1434 for (int i = 0; i < mCursorCount; i++) { 1435 mCursorDrawable[i].draw(canvas); 1436 } 1437 if (translate) canvas.translate(0, -cursorOffsetVertical); 1438 } 1439 1440 /** 1441 * Invalidates all the sub-display lists that overlap the specified character range 1442 */ 1443 void invalidateTextDisplayList(Layout layout, int start, int end) { 1444 if (mTextDisplayLists != null && layout instanceof DynamicLayout) { 1445 final int firstLine = layout.getLineForOffset(start); 1446 final int lastLine = layout.getLineForOffset(end); 1447 1448 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1449 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1450 int[] blockIndices = dynamicLayout.getBlockIndices(); 1451 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1452 1453 int i = 0; 1454 // Skip the blocks before firstLine 1455 while (i < numberOfBlocks) { 1456 if (blockEndLines[i] >= firstLine) break; 1457 i++; 1458 } 1459 1460 // Invalidate all subsequent blocks until lastLine is passed 1461 while (i < numberOfBlocks) { 1462 final int blockIndex = blockIndices[i]; 1463 if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX) { 1464 mTextDisplayLists[blockIndex].clear(); 1465 } 1466 if (blockEndLines[i] >= lastLine) break; 1467 i++; 1468 } 1469 } 1470 } 1471 1472 void invalidateTextDisplayList() { 1473 if (mTextDisplayLists != null) { 1474 for (int i = 0; i < mTextDisplayLists.length; i++) { 1475 if (mTextDisplayLists[i] != null) mTextDisplayLists[i].clear(); 1476 } 1477 } 1478 } 1479 1480 void updateCursorsPositions() { 1481 if (mTextView.mCursorDrawableRes == 0) { 1482 mCursorCount = 0; 1483 return; 1484 } 1485 1486 Layout layout = mTextView.getLayout(); 1487 Layout hintLayout = mTextView.getHintLayout(); 1488 final int offset = mTextView.getSelectionStart(); 1489 final int line = layout.getLineForOffset(offset); 1490 final int top = layout.getLineTop(line); 1491 final int bottom = layout.getLineTop(line + 1); 1492 1493 mCursorCount = layout.isLevelBoundary(offset) ? 2 : 1; 1494 1495 int middle = bottom; 1496 if (mCursorCount == 2) { 1497 // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)} 1498 middle = (top + bottom) >> 1; 1499 } 1500 1501 boolean clamped = layout.shouldClampCursor(line); 1502 updateCursorPosition(0, top, middle, 1503 getPrimaryHorizontal(layout, hintLayout, offset, clamped)); 1504 1505 if (mCursorCount == 2) { 1506 updateCursorPosition(1, middle, bottom, 1507 layout.getSecondaryHorizontal(offset, clamped)); 1508 } 1509 } 1510 1511 private float getPrimaryHorizontal(Layout layout, Layout hintLayout, int offset, 1512 boolean clamped) { 1513 if (TextUtils.isEmpty(layout.getText()) && 1514 hintLayout != null && 1515 !TextUtils.isEmpty(hintLayout.getText())) { 1516 return hintLayout.getPrimaryHorizontal(offset, clamped); 1517 } else { 1518 return layout.getPrimaryHorizontal(offset, clamped); 1519 } 1520 } 1521 1522 /** 1523 * @return true if the selection mode was actually started. 1524 */ 1525 boolean startSelectionActionMode() { 1526 if (mSelectionActionMode != null) { 1527 // Selection action mode is already started 1528 return false; 1529 } 1530 1531 if (!canSelectText() || !mTextView.requestFocus()) { 1532 Log.w(TextView.LOG_TAG, 1533 "TextView does not support text selection. Action mode cancelled."); 1534 return false; 1535 } 1536 1537 if (!mTextView.hasSelection()) { 1538 // There may already be a selection on device rotation 1539 if (!selectCurrentWord()) { 1540 // No word found under cursor or text selection not permitted. 1541 return false; 1542 } 1543 } 1544 1545 boolean willExtract = extractedTextModeWillBeStarted(); 1546 1547 // Do not start the action mode when extracted text will show up full screen, which would 1548 // immediately hide the newly created action bar and would be visually distracting. 1549 if (!willExtract) { 1550 ActionMode.Callback actionModeCallback = new SelectionActionModeCallback(); 1551 mSelectionActionMode = mTextView.startActionMode(actionModeCallback); 1552 } 1553 1554 final boolean selectionStarted = mSelectionActionMode != null || willExtract; 1555 if (selectionStarted && !mTextView.isTextSelectable() && mShowSoftInputOnFocus) { 1556 // Show the IME to be able to replace text, except when selecting non editable text. 1557 final InputMethodManager imm = InputMethodManager.peekInstance(); 1558 if (imm != null) { 1559 imm.showSoftInput(mTextView, 0, null); 1560 } 1561 } 1562 1563 return selectionStarted; 1564 } 1565 1566 private boolean extractedTextModeWillBeStarted() { 1567 if (!(mTextView instanceof ExtractEditText)) { 1568 final InputMethodManager imm = InputMethodManager.peekInstance(); 1569 return imm != null && imm.isFullscreenMode(); 1570 } 1571 return false; 1572 } 1573 1574 /** 1575 * @return <code>true</code> if the cursor/current selection overlaps a {@link SuggestionSpan}. 1576 */ 1577 private boolean isCursorInsideSuggestionSpan() { 1578 CharSequence text = mTextView.getText(); 1579 if (!(text instanceof Spannable)) return false; 1580 1581 SuggestionSpan[] suggestionSpans = ((Spannable) text).getSpans( 1582 mTextView.getSelectionStart(), mTextView.getSelectionEnd(), SuggestionSpan.class); 1583 return (suggestionSpans.length > 0); 1584 } 1585 1586 /** 1587 * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with 1588 * {@link SuggestionSpan#FLAG_EASY_CORRECT} set. 1589 */ 1590 private boolean isCursorInsideEasyCorrectionSpan() { 1591 Spannable spannable = (Spannable) mTextView.getText(); 1592 SuggestionSpan[] suggestionSpans = spannable.getSpans(mTextView.getSelectionStart(), 1593 mTextView.getSelectionEnd(), SuggestionSpan.class); 1594 for (int i = 0; i < suggestionSpans.length; i++) { 1595 if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) { 1596 return true; 1597 } 1598 } 1599 return false; 1600 } 1601 1602 void onTouchUpEvent(MotionEvent event) { 1603 boolean selectAllGotFocus = mSelectAllOnFocus && mTextView.didTouchFocusSelect(); 1604 hideControllers(); 1605 CharSequence text = mTextView.getText(); 1606 if (!selectAllGotFocus && text.length() > 0) { 1607 // Move cursor 1608 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 1609 Selection.setSelection((Spannable) text, offset); 1610 if (mSpellChecker != null) { 1611 // When the cursor moves, the word that was typed may need spell check 1612 mSpellChecker.onSelectionChanged(); 1613 } 1614 if (!extractedTextModeWillBeStarted()) { 1615 if (isCursorInsideEasyCorrectionSpan()) { 1616 mShowSuggestionRunnable = new Runnable() { 1617 public void run() { 1618 showSuggestions(); 1619 } 1620 }; 1621 // removeCallbacks is performed on every touch 1622 mTextView.postDelayed(mShowSuggestionRunnable, 1623 ViewConfiguration.getDoubleTapTimeout()); 1624 } else if (hasInsertionController()) { 1625 getInsertionController().show(); 1626 } 1627 } 1628 } 1629 } 1630 1631 protected void stopSelectionActionMode() { 1632 if (mSelectionActionMode != null) { 1633 // This will hide the mSelectionModifierCursorController 1634 mSelectionActionMode.finish(); 1635 } 1636 } 1637 1638 /** 1639 * @return True if this view supports insertion handles. 1640 */ 1641 boolean hasInsertionController() { 1642 return mInsertionControllerEnabled; 1643 } 1644 1645 /** 1646 * @return True if this view supports selection handles. 1647 */ 1648 boolean hasSelectionController() { 1649 return mSelectionControllerEnabled; 1650 } 1651 1652 InsertionPointCursorController getInsertionController() { 1653 if (!mInsertionControllerEnabled) { 1654 return null; 1655 } 1656 1657 if (mInsertionPointCursorController == null) { 1658 mInsertionPointCursorController = new InsertionPointCursorController(); 1659 1660 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 1661 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 1662 } 1663 1664 return mInsertionPointCursorController; 1665 } 1666 1667 SelectionModifierCursorController getSelectionController() { 1668 if (!mSelectionControllerEnabled) { 1669 return null; 1670 } 1671 1672 if (mSelectionModifierCursorController == null) { 1673 mSelectionModifierCursorController = new SelectionModifierCursorController(); 1674 1675 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 1676 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 1677 } 1678 1679 return mSelectionModifierCursorController; 1680 } 1681 1682 private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) { 1683 if (mCursorDrawable[cursorIndex] == null) 1684 mCursorDrawable[cursorIndex] = mTextView.getResources().getDrawable( 1685 mTextView.mCursorDrawableRes); 1686 1687 if (mTempRect == null) mTempRect = new Rect(); 1688 mCursorDrawable[cursorIndex].getPadding(mTempRect); 1689 final int width = mCursorDrawable[cursorIndex].getIntrinsicWidth(); 1690 horizontal = Math.max(0.5f, horizontal - 0.5f); 1691 final int left = (int) (horizontal) - mTempRect.left; 1692 mCursorDrawable[cursorIndex].setBounds(left, top - mTempRect.top, left + width, 1693 bottom + mTempRect.bottom); 1694 } 1695 1696 /** 1697 * Called by the framework in response to a text auto-correction (such as fixing a typo using a 1698 * a dictionnary) from the current input method, provided by it calling 1699 * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default 1700 * implementation flashes the background of the corrected word to provide feedback to the user. 1701 * 1702 * @param info The auto correct info about the text that was corrected. 1703 */ 1704 public void onCommitCorrection(CorrectionInfo info) { 1705 if (mCorrectionHighlighter == null) { 1706 mCorrectionHighlighter = new CorrectionHighlighter(); 1707 } else { 1708 mCorrectionHighlighter.invalidate(false); 1709 } 1710 1711 mCorrectionHighlighter.highlight(info); 1712 } 1713 1714 void showSuggestions() { 1715 if (mSuggestionsPopupWindow == null) { 1716 mSuggestionsPopupWindow = new SuggestionsPopupWindow(); 1717 } 1718 hideControllers(); 1719 mSuggestionsPopupWindow.show(); 1720 } 1721 1722 boolean areSuggestionsShown() { 1723 return mSuggestionsPopupWindow != null && mSuggestionsPopupWindow.isShowing(); 1724 } 1725 1726 void onScrollChanged() { 1727 if (mPositionListener != null) { 1728 mPositionListener.onScrollChanged(); 1729 } 1730 } 1731 1732 /** 1733 * @return True when the TextView isFocused and has a valid zero-length selection (cursor). 1734 */ 1735 private boolean shouldBlink() { 1736 if (!isCursorVisible() || !mTextView.isFocused()) return false; 1737 1738 final int start = mTextView.getSelectionStart(); 1739 if (start < 0) return false; 1740 1741 final int end = mTextView.getSelectionEnd(); 1742 if (end < 0) return false; 1743 1744 return start == end; 1745 } 1746 1747 void makeBlink() { 1748 if (shouldBlink()) { 1749 mShowCursor = SystemClock.uptimeMillis(); 1750 if (mBlink == null) mBlink = new Blink(); 1751 mBlink.removeCallbacks(mBlink); 1752 mBlink.postAtTime(mBlink, mShowCursor + BLINK); 1753 } else { 1754 if (mBlink != null) mBlink.removeCallbacks(mBlink); 1755 } 1756 } 1757 1758 private class Blink extends Handler implements Runnable { 1759 private boolean mCancelled; 1760 1761 public void run() { 1762 if (mCancelled) { 1763 return; 1764 } 1765 1766 removeCallbacks(Blink.this); 1767 1768 if (shouldBlink()) { 1769 if (mTextView.getLayout() != null) { 1770 mTextView.invalidateCursorPath(); 1771 } 1772 1773 postAtTime(this, SystemClock.uptimeMillis() + BLINK); 1774 } 1775 } 1776 1777 void cancel() { 1778 if (!mCancelled) { 1779 removeCallbacks(Blink.this); 1780 mCancelled = true; 1781 } 1782 } 1783 1784 void uncancel() { 1785 mCancelled = false; 1786 } 1787 } 1788 1789 private DragShadowBuilder getTextThumbnailBuilder(CharSequence text) { 1790 TextView shadowView = (TextView) View.inflate(mTextView.getContext(), 1791 com.android.internal.R.layout.text_drag_thumbnail, null); 1792 1793 if (shadowView == null) { 1794 throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); 1795 } 1796 1797 if (text.length() > DRAG_SHADOW_MAX_TEXT_LENGTH) { 1798 text = text.subSequence(0, DRAG_SHADOW_MAX_TEXT_LENGTH); 1799 } 1800 shadowView.setText(text); 1801 shadowView.setTextColor(mTextView.getTextColors()); 1802 1803 shadowView.setTextAppearance(mTextView.getContext(), R.styleable.Theme_textAppearanceLarge); 1804 shadowView.setGravity(Gravity.CENTER); 1805 1806 shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 1807 ViewGroup.LayoutParams.WRAP_CONTENT)); 1808 1809 final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); 1810 shadowView.measure(size, size); 1811 1812 shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight()); 1813 shadowView.invalidate(); 1814 return new DragShadowBuilder(shadowView); 1815 } 1816 1817 private static class DragLocalState { 1818 public TextView sourceTextView; 1819 public int start, end; 1820 1821 public DragLocalState(TextView sourceTextView, int start, int end) { 1822 this.sourceTextView = sourceTextView; 1823 this.start = start; 1824 this.end = end; 1825 } 1826 } 1827 1828 void onDrop(DragEvent event) { 1829 StringBuilder content = new StringBuilder(""); 1830 ClipData clipData = event.getClipData(); 1831 final int itemCount = clipData.getItemCount(); 1832 for (int i=0; i < itemCount; i++) { 1833 Item item = clipData.getItemAt(i); 1834 content.append(item.coerceToStyledText(mTextView.getContext())); 1835 } 1836 1837 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 1838 1839 Object localState = event.getLocalState(); 1840 DragLocalState dragLocalState = null; 1841 if (localState instanceof DragLocalState) { 1842 dragLocalState = (DragLocalState) localState; 1843 } 1844 boolean dragDropIntoItself = dragLocalState != null && 1845 dragLocalState.sourceTextView == mTextView; 1846 1847 if (dragDropIntoItself) { 1848 if (offset >= dragLocalState.start && offset < dragLocalState.end) { 1849 // A drop inside the original selection discards the drop. 1850 return; 1851 } 1852 } 1853 1854 final int originalLength = mTextView.getText().length(); 1855 long minMax = mTextView.prepareSpacesAroundPaste(offset, offset, content); 1856 int min = TextUtils.unpackRangeStartFromLong(minMax); 1857 int max = TextUtils.unpackRangeEndFromLong(minMax); 1858 1859 Selection.setSelection((Spannable) mTextView.getText(), max); 1860 mTextView.replaceText_internal(min, max, content); 1861 1862 if (dragDropIntoItself) { 1863 int dragSourceStart = dragLocalState.start; 1864 int dragSourceEnd = dragLocalState.end; 1865 if (max <= dragSourceStart) { 1866 // Inserting text before selection has shifted positions 1867 final int shift = mTextView.getText().length() - originalLength; 1868 dragSourceStart += shift; 1869 dragSourceEnd += shift; 1870 } 1871 1872 // Delete original selection 1873 mTextView.deleteText_internal(dragSourceStart, dragSourceEnd); 1874 1875 // Make sure we do not leave two adjacent spaces. 1876 final int prevCharIdx = Math.max(0, dragSourceStart - 1); 1877 final int nextCharIdx = Math.min(mTextView.getText().length(), dragSourceStart + 1); 1878 if (nextCharIdx > prevCharIdx + 1) { 1879 CharSequence t = mTextView.getTransformedText(prevCharIdx, nextCharIdx); 1880 if (Character.isSpaceChar(t.charAt(0)) && Character.isSpaceChar(t.charAt(1))) { 1881 mTextView.deleteText_internal(prevCharIdx, prevCharIdx + 1); 1882 } 1883 } 1884 } 1885 } 1886 1887 public void addSpanWatchers(Spannable text) { 1888 final int textLength = text.length(); 1889 1890 if (mKeyListener != null) { 1891 text.setSpan(mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 1892 } 1893 1894 if (mSpanController == null) { 1895 mSpanController = new SpanController(); 1896 } 1897 text.setSpan(mSpanController, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 1898 } 1899 1900 /** 1901 * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related 1902 * pop-up should be displayed. 1903 * Also monitors {@link Selection} to call back to the attached input method. 1904 */ 1905 class SpanController implements SpanWatcher { 1906 1907 private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs 1908 1909 private EasyEditPopupWindow mPopupWindow; 1910 1911 private Runnable mHidePopup; 1912 1913 // This function is pure but inner classes can't have static functions 1914 private boolean isNonIntermediateSelectionSpan(final Spannable text, 1915 final Object span) { 1916 return (Selection.SELECTION_START == span || Selection.SELECTION_END == span) 1917 && (text.getSpanFlags(span) & Spanned.SPAN_INTERMEDIATE) == 0; 1918 } 1919 1920 @Override 1921 public void onSpanAdded(Spannable text, Object span, int start, int end) { 1922 if (isNonIntermediateSelectionSpan(text, span)) { 1923 sendUpdateSelection(); 1924 } else if (span instanceof EasyEditSpan) { 1925 if (mPopupWindow == null) { 1926 mPopupWindow = new EasyEditPopupWindow(); 1927 mHidePopup = new Runnable() { 1928 @Override 1929 public void run() { 1930 hide(); 1931 } 1932 }; 1933 } 1934 1935 // Make sure there is only at most one EasyEditSpan in the text 1936 if (mPopupWindow.mEasyEditSpan != null) { 1937 mPopupWindow.mEasyEditSpan.setDeleteEnabled(false); 1938 } 1939 1940 mPopupWindow.setEasyEditSpan((EasyEditSpan) span); 1941 mPopupWindow.setOnDeleteListener(new EasyEditDeleteListener() { 1942 @Override 1943 public void onDeleteClick(EasyEditSpan span) { 1944 Editable editable = (Editable) mTextView.getText(); 1945 int start = editable.getSpanStart(span); 1946 int end = editable.getSpanEnd(span); 1947 if (start >= 0 && end >= 0) { 1948 sendEasySpanNotification(EasyEditSpan.TEXT_DELETED, span); 1949 mTextView.deleteText_internal(start, end); 1950 } 1951 editable.removeSpan(span); 1952 } 1953 }); 1954 1955 if (mTextView.getWindowVisibility() != View.VISIBLE) { 1956 // The window is not visible yet, ignore the text change. 1957 return; 1958 } 1959 1960 if (mTextView.getLayout() == null) { 1961 // The view has not been laid out yet, ignore the text change 1962 return; 1963 } 1964 1965 if (extractedTextModeWillBeStarted()) { 1966 // The input is in extract mode. Do not handle the easy edit in 1967 // the original TextView, as the ExtractEditText will do 1968 return; 1969 } 1970 1971 mPopupWindow.show(); 1972 mTextView.removeCallbacks(mHidePopup); 1973 mTextView.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS); 1974 } 1975 } 1976 1977 @Override 1978 public void onSpanRemoved(Spannable text, Object span, int start, int end) { 1979 if (isNonIntermediateSelectionSpan(text, span)) { 1980 sendUpdateSelection(); 1981 } else if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { 1982 hide(); 1983 } 1984 } 1985 1986 @Override 1987 public void onSpanChanged(Spannable text, Object span, int previousStart, int previousEnd, 1988 int newStart, int newEnd) { 1989 if (isNonIntermediateSelectionSpan(text, span)) { 1990 sendUpdateSelection(); 1991 } else if (mPopupWindow != null && span instanceof EasyEditSpan) { 1992 EasyEditSpan easyEditSpan = (EasyEditSpan) span; 1993 sendEasySpanNotification(EasyEditSpan.TEXT_MODIFIED, easyEditSpan); 1994 text.removeSpan(easyEditSpan); 1995 } 1996 } 1997 1998 public void hide() { 1999 if (mPopupWindow != null) { 2000 mPopupWindow.hide(); 2001 mTextView.removeCallbacks(mHidePopup); 2002 } 2003 } 2004 2005 private void sendEasySpanNotification(int textChangedType, EasyEditSpan span) { 2006 try { 2007 PendingIntent pendingIntent = span.getPendingIntent(); 2008 if (pendingIntent != null) { 2009 Intent intent = new Intent(); 2010 intent.putExtra(EasyEditSpan.EXTRA_TEXT_CHANGED_TYPE, textChangedType); 2011 pendingIntent.send(mTextView.getContext(), 0, intent); 2012 } 2013 } catch (CanceledException e) { 2014 // This should not happen, as we should try to send the intent only once. 2015 Log.w(TAG, "PendingIntent for notification cannot be sent", e); 2016 } 2017 } 2018 } 2019 2020 /** 2021 * Listens for the delete event triggered by {@link EasyEditPopupWindow}. 2022 */ 2023 private interface EasyEditDeleteListener { 2024 2025 /** 2026 * Clicks the delete pop-up. 2027 */ 2028 void onDeleteClick(EasyEditSpan span); 2029 } 2030 2031 /** 2032 * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled 2033 * by {@link SpanController}. 2034 */ 2035 private class EasyEditPopupWindow extends PinnedPopupWindow 2036 implements OnClickListener { 2037 private static final int POPUP_TEXT_LAYOUT = 2038 com.android.internal.R.layout.text_edit_action_popup_text; 2039 private TextView mDeleteTextView; 2040 private EasyEditSpan mEasyEditSpan; 2041 private EasyEditDeleteListener mOnDeleteListener; 2042 2043 @Override 2044 protected void createPopupWindow() { 2045 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 2046 com.android.internal.R.attr.textSelectHandleWindowStyle); 2047 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 2048 mPopupWindow.setClippingEnabled(true); 2049 } 2050 2051 @Override 2052 protected void initContentView() { 2053 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 2054 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 2055 mContentView = linearLayout; 2056 mContentView.setBackgroundResource( 2057 com.android.internal.R.drawable.text_edit_side_paste_window); 2058 2059 LayoutInflater inflater = (LayoutInflater)mTextView.getContext(). 2060 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2061 2062 LayoutParams wrapContent = new LayoutParams( 2063 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 2064 2065 mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2066 mDeleteTextView.setLayoutParams(wrapContent); 2067 mDeleteTextView.setText(com.android.internal.R.string.delete); 2068 mDeleteTextView.setOnClickListener(this); 2069 mContentView.addView(mDeleteTextView); 2070 } 2071 2072 public void setEasyEditSpan(EasyEditSpan easyEditSpan) { 2073 mEasyEditSpan = easyEditSpan; 2074 } 2075 2076 private void setOnDeleteListener(EasyEditDeleteListener listener) { 2077 mOnDeleteListener = listener; 2078 } 2079 2080 @Override 2081 public void onClick(View view) { 2082 if (view == mDeleteTextView 2083 && mEasyEditSpan != null && mEasyEditSpan.isDeleteEnabled() 2084 && mOnDeleteListener != null) { 2085 mOnDeleteListener.onDeleteClick(mEasyEditSpan); 2086 } 2087 } 2088 2089 @Override 2090 public void hide() { 2091 if (mEasyEditSpan != null) { 2092 mEasyEditSpan.setDeleteEnabled(false); 2093 } 2094 mOnDeleteListener = null; 2095 super.hide(); 2096 } 2097 2098 @Override 2099 protected int getTextOffset() { 2100 // Place the pop-up at the end of the span 2101 Editable editable = (Editable) mTextView.getText(); 2102 return editable.getSpanEnd(mEasyEditSpan); 2103 } 2104 2105 @Override 2106 protected int getVerticalLocalPosition(int line) { 2107 return mTextView.getLayout().getLineBottom(line); 2108 } 2109 2110 @Override 2111 protected int clipVertically(int positionY) { 2112 // As we display the pop-up below the span, no vertical clipping is required. 2113 return positionY; 2114 } 2115 } 2116 2117 private class PositionListener implements ViewTreeObserver.OnPreDrawListener { 2118 // 3 handles 2119 // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others) 2120 private final int MAXIMUM_NUMBER_OF_LISTENERS = 6; 2121 private TextViewPositionListener[] mPositionListeners = 2122 new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS]; 2123 private boolean mCanMove[] = new boolean[MAXIMUM_NUMBER_OF_LISTENERS]; 2124 private boolean mPositionHasChanged = true; 2125 // Absolute position of the TextView with respect to its parent window 2126 private int mPositionX, mPositionY; 2127 private int mNumberOfListeners; 2128 private boolean mScrollHasChanged; 2129 final int[] mTempCoords = new int[2]; 2130 2131 public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) { 2132 if (mNumberOfListeners == 0) { 2133 updatePosition(); 2134 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2135 vto.addOnPreDrawListener(this); 2136 } 2137 2138 int emptySlotIndex = -1; 2139 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2140 TextViewPositionListener listener = mPositionListeners[i]; 2141 if (listener == positionListener) { 2142 return; 2143 } else if (emptySlotIndex < 0 && listener == null) { 2144 emptySlotIndex = i; 2145 } 2146 } 2147 2148 mPositionListeners[emptySlotIndex] = positionListener; 2149 mCanMove[emptySlotIndex] = canMove; 2150 mNumberOfListeners++; 2151 } 2152 2153 public void removeSubscriber(TextViewPositionListener positionListener) { 2154 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2155 if (mPositionListeners[i] == positionListener) { 2156 mPositionListeners[i] = null; 2157 mNumberOfListeners--; 2158 break; 2159 } 2160 } 2161 2162 if (mNumberOfListeners == 0) { 2163 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2164 vto.removeOnPreDrawListener(this); 2165 } 2166 } 2167 2168 public int getPositionX() { 2169 return mPositionX; 2170 } 2171 2172 public int getPositionY() { 2173 return mPositionY; 2174 } 2175 2176 @Override 2177 public boolean onPreDraw() { 2178 updatePosition(); 2179 2180 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2181 if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) { 2182 TextViewPositionListener positionListener = mPositionListeners[i]; 2183 if (positionListener != null) { 2184 positionListener.updatePosition(mPositionX, mPositionY, 2185 mPositionHasChanged, mScrollHasChanged); 2186 } 2187 } 2188 } 2189 2190 mScrollHasChanged = false; 2191 return true; 2192 } 2193 2194 private void updatePosition() { 2195 mTextView.getLocationInWindow(mTempCoords); 2196 2197 mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY; 2198 2199 mPositionX = mTempCoords[0]; 2200 mPositionY = mTempCoords[1]; 2201 } 2202 2203 public void onScrollChanged() { 2204 mScrollHasChanged = true; 2205 } 2206 } 2207 2208 private abstract class PinnedPopupWindow implements TextViewPositionListener { 2209 protected PopupWindow mPopupWindow; 2210 protected ViewGroup mContentView; 2211 int mPositionX, mPositionY; 2212 2213 protected abstract void createPopupWindow(); 2214 protected abstract void initContentView(); 2215 protected abstract int getTextOffset(); 2216 protected abstract int getVerticalLocalPosition(int line); 2217 protected abstract int clipVertically(int positionY); 2218 2219 public PinnedPopupWindow() { 2220 createPopupWindow(); 2221 2222 mPopupWindow.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 2223 mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 2224 mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 2225 2226 initContentView(); 2227 2228 LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2229 ViewGroup.LayoutParams.WRAP_CONTENT); 2230 mContentView.setLayoutParams(wrapContent); 2231 2232 mPopupWindow.setContentView(mContentView); 2233 } 2234 2235 public void show() { 2236 getPositionListener().addSubscriber(this, false /* offset is fixed */); 2237 2238 computeLocalPosition(); 2239 2240 final PositionListener positionListener = getPositionListener(); 2241 updatePosition(positionListener.getPositionX(), positionListener.getPositionY()); 2242 } 2243 2244 protected void measureContent() { 2245 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2246 mContentView.measure( 2247 View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, 2248 View.MeasureSpec.AT_MOST), 2249 View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, 2250 View.MeasureSpec.AT_MOST)); 2251 } 2252 2253 /* The popup window will be horizontally centered on the getTextOffset() and vertically 2254 * positioned according to viewportToContentHorizontalOffset. 2255 * 2256 * This method assumes that mContentView has properly been measured from its content. */ 2257 private void computeLocalPosition() { 2258 measureContent(); 2259 final int width = mContentView.getMeasuredWidth(); 2260 final int offset = getTextOffset(); 2261 mPositionX = (int) (mTextView.getLayout().getPrimaryHorizontal(offset) - width / 2.0f); 2262 mPositionX += mTextView.viewportToContentHorizontalOffset(); 2263 2264 final int line = mTextView.getLayout().getLineForOffset(offset); 2265 mPositionY = getVerticalLocalPosition(line); 2266 mPositionY += mTextView.viewportToContentVerticalOffset(); 2267 } 2268 2269 private void updatePosition(int parentPositionX, int parentPositionY) { 2270 int positionX = parentPositionX + mPositionX; 2271 int positionY = parentPositionY + mPositionY; 2272 2273 positionY = clipVertically(positionY); 2274 2275 // Horizontal clipping 2276 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2277 final int width = mContentView.getMeasuredWidth(); 2278 positionX = Math.min(displayMetrics.widthPixels - width, positionX); 2279 positionX = Math.max(0, positionX); 2280 2281 if (isShowing()) { 2282 mPopupWindow.update(positionX, positionY, -1, -1); 2283 } else { 2284 mPopupWindow.showAtLocation(mTextView, Gravity.NO_GRAVITY, 2285 positionX, positionY); 2286 } 2287 } 2288 2289 public void hide() { 2290 mPopupWindow.dismiss(); 2291 getPositionListener().removeSubscriber(this); 2292 } 2293 2294 @Override 2295 public void updatePosition(int parentPositionX, int parentPositionY, 2296 boolean parentPositionChanged, boolean parentScrolled) { 2297 // Either parentPositionChanged or parentScrolled is true, check if still visible 2298 if (isShowing() && isOffsetVisible(getTextOffset())) { 2299 if (parentScrolled) computeLocalPosition(); 2300 updatePosition(parentPositionX, parentPositionY); 2301 } else { 2302 hide(); 2303 } 2304 } 2305 2306 public boolean isShowing() { 2307 return mPopupWindow.isShowing(); 2308 } 2309 } 2310 2311 private class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener { 2312 private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE; 2313 private static final int ADD_TO_DICTIONARY = -1; 2314 private static final int DELETE_TEXT = -2; 2315 private SuggestionInfo[] mSuggestionInfos; 2316 private int mNumberOfSuggestions; 2317 private boolean mCursorWasVisibleBeforeSuggestions; 2318 private boolean mIsShowingUp = false; 2319 private SuggestionAdapter mSuggestionsAdapter; 2320 private final Comparator<SuggestionSpan> mSuggestionSpanComparator; 2321 private final HashMap<SuggestionSpan, Integer> mSpansLengths; 2322 2323 private class CustomPopupWindow extends PopupWindow { 2324 public CustomPopupWindow(Context context, int defStyle) { 2325 super(context, null, defStyle); 2326 } 2327 2328 @Override 2329 public void dismiss() { 2330 super.dismiss(); 2331 2332 getPositionListener().removeSubscriber(SuggestionsPopupWindow.this); 2333 2334 // Safe cast since show() checks that mTextView.getText() is an Editable 2335 ((Spannable) mTextView.getText()).removeSpan(mSuggestionRangeSpan); 2336 2337 mTextView.setCursorVisible(mCursorWasVisibleBeforeSuggestions); 2338 if (hasInsertionController()) { 2339 getInsertionController().show(); 2340 } 2341 } 2342 } 2343 2344 public SuggestionsPopupWindow() { 2345 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 2346 mSuggestionSpanComparator = new SuggestionSpanComparator(); 2347 mSpansLengths = new HashMap<SuggestionSpan, Integer>(); 2348 } 2349 2350 @Override 2351 protected void createPopupWindow() { 2352 mPopupWindow = new CustomPopupWindow(mTextView.getContext(), 2353 com.android.internal.R.attr.textSuggestionsWindowStyle); 2354 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 2355 mPopupWindow.setFocusable(true); 2356 mPopupWindow.setClippingEnabled(false); 2357 } 2358 2359 @Override 2360 protected void initContentView() { 2361 ListView listView = new ListView(mTextView.getContext()); 2362 mSuggestionsAdapter = new SuggestionAdapter(); 2363 listView.setAdapter(mSuggestionsAdapter); 2364 listView.setOnItemClickListener(this); 2365 mContentView = listView; 2366 2367 // Inflate the suggestion items once and for all. + 2 for add to dictionary and delete 2368 mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS + 2]; 2369 for (int i = 0; i < mSuggestionInfos.length; i++) { 2370 mSuggestionInfos[i] = new SuggestionInfo(); 2371 } 2372 } 2373 2374 public boolean isShowingUp() { 2375 return mIsShowingUp; 2376 } 2377 2378 public void onParentLostFocus() { 2379 mIsShowingUp = false; 2380 } 2381 2382 private class SuggestionInfo { 2383 int suggestionStart, suggestionEnd; // range of actual suggestion within text 2384 SuggestionSpan suggestionSpan; // the SuggestionSpan that this TextView represents 2385 int suggestionIndex; // the index of this suggestion inside suggestionSpan 2386 SpannableStringBuilder text = new SpannableStringBuilder(); 2387 TextAppearanceSpan highlightSpan = new TextAppearanceSpan(mTextView.getContext(), 2388 android.R.style.TextAppearance_SuggestionHighlight); 2389 } 2390 2391 private class SuggestionAdapter extends BaseAdapter { 2392 private LayoutInflater mInflater = (LayoutInflater) mTextView.getContext(). 2393 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2394 2395 @Override 2396 public int getCount() { 2397 return mNumberOfSuggestions; 2398 } 2399 2400 @Override 2401 public Object getItem(int position) { 2402 return mSuggestionInfos[position]; 2403 } 2404 2405 @Override 2406 public long getItemId(int position) { 2407 return position; 2408 } 2409 2410 @Override 2411 public View getView(int position, View convertView, ViewGroup parent) { 2412 TextView textView = (TextView) convertView; 2413 2414 if (textView == null) { 2415 textView = (TextView) mInflater.inflate(mTextView.mTextEditSuggestionItemLayout, 2416 parent, false); 2417 } 2418 2419 final SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 2420 textView.setText(suggestionInfo.text); 2421 2422 if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY || 2423 suggestionInfo.suggestionIndex == DELETE_TEXT) { 2424 textView.setBackgroundColor(Color.TRANSPARENT); 2425 } else { 2426 textView.setBackgroundColor(Color.WHITE); 2427 } 2428 2429 return textView; 2430 } 2431 } 2432 2433 private class SuggestionSpanComparator implements Comparator<SuggestionSpan> { 2434 public int compare(SuggestionSpan span1, SuggestionSpan span2) { 2435 final int flag1 = span1.getFlags(); 2436 final int flag2 = span2.getFlags(); 2437 if (flag1 != flag2) { 2438 // The order here should match what is used in updateDrawState 2439 final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 2440 final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 2441 final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0; 2442 final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0; 2443 if (easy1 && !misspelled1) return -1; 2444 if (easy2 && !misspelled2) return 1; 2445 if (misspelled1) return -1; 2446 if (misspelled2) return 1; 2447 } 2448 2449 return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue(); 2450 } 2451 } 2452 2453 /** 2454 * Returns the suggestion spans that cover the current cursor position. The suggestion 2455 * spans are sorted according to the length of text that they are attached to. 2456 */ 2457 private SuggestionSpan[] getSuggestionSpans() { 2458 int pos = mTextView.getSelectionStart(); 2459 Spannable spannable = (Spannable) mTextView.getText(); 2460 SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class); 2461 2462 mSpansLengths.clear(); 2463 for (SuggestionSpan suggestionSpan : suggestionSpans) { 2464 int start = spannable.getSpanStart(suggestionSpan); 2465 int end = spannable.getSpanEnd(suggestionSpan); 2466 mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start)); 2467 } 2468 2469 // The suggestions are sorted according to their types (easy correction first, then 2470 // misspelled) and to the length of the text that they cover (shorter first). 2471 Arrays.sort(suggestionSpans, mSuggestionSpanComparator); 2472 return suggestionSpans; 2473 } 2474 2475 @Override 2476 public void show() { 2477 if (!(mTextView.getText() instanceof Editable)) return; 2478 2479 if (updateSuggestions()) { 2480 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 2481 mTextView.setCursorVisible(false); 2482 mIsShowingUp = true; 2483 super.show(); 2484 } 2485 } 2486 2487 @Override 2488 protected void measureContent() { 2489 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2490 final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec( 2491 displayMetrics.widthPixels, View.MeasureSpec.AT_MOST); 2492 final int verticalMeasure = View.MeasureSpec.makeMeasureSpec( 2493 displayMetrics.heightPixels, View.MeasureSpec.AT_MOST); 2494 2495 int width = 0; 2496 View view = null; 2497 for (int i = 0; i < mNumberOfSuggestions; i++) { 2498 view = mSuggestionsAdapter.getView(i, view, mContentView); 2499 view.getLayoutParams().width = LayoutParams.WRAP_CONTENT; 2500 view.measure(horizontalMeasure, verticalMeasure); 2501 width = Math.max(width, view.getMeasuredWidth()); 2502 } 2503 2504 // Enforce the width based on actual text widths 2505 mContentView.measure( 2506 View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY), 2507 verticalMeasure); 2508 2509 Drawable popupBackground = mPopupWindow.getBackground(); 2510 if (popupBackground != null) { 2511 if (mTempRect == null) mTempRect = new Rect(); 2512 popupBackground.getPadding(mTempRect); 2513 width += mTempRect.left + mTempRect.right; 2514 } 2515 mPopupWindow.setWidth(width); 2516 } 2517 2518 @Override 2519 protected int getTextOffset() { 2520 return mTextView.getSelectionStart(); 2521 } 2522 2523 @Override 2524 protected int getVerticalLocalPosition(int line) { 2525 return mTextView.getLayout().getLineBottom(line); 2526 } 2527 2528 @Override 2529 protected int clipVertically(int positionY) { 2530 final int height = mContentView.getMeasuredHeight(); 2531 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2532 return Math.min(positionY, displayMetrics.heightPixels - height); 2533 } 2534 2535 @Override 2536 public void hide() { 2537 super.hide(); 2538 } 2539 2540 private boolean updateSuggestions() { 2541 Spannable spannable = (Spannable) mTextView.getText(); 2542 SuggestionSpan[] suggestionSpans = getSuggestionSpans(); 2543 2544 final int nbSpans = suggestionSpans.length; 2545 // Suggestions are shown after a delay: the underlying spans may have been removed 2546 if (nbSpans == 0) return false; 2547 2548 mNumberOfSuggestions = 0; 2549 int spanUnionStart = mTextView.getText().length(); 2550 int spanUnionEnd = 0; 2551 2552 SuggestionSpan misspelledSpan = null; 2553 int underlineColor = 0; 2554 2555 for (int spanIndex = 0; spanIndex < nbSpans; spanIndex++) { 2556 SuggestionSpan suggestionSpan = suggestionSpans[spanIndex]; 2557 final int spanStart = spannable.getSpanStart(suggestionSpan); 2558 final int spanEnd = spannable.getSpanEnd(suggestionSpan); 2559 spanUnionStart = Math.min(spanStart, spanUnionStart); 2560 spanUnionEnd = Math.max(spanEnd, spanUnionEnd); 2561 2562 if ((suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) { 2563 misspelledSpan = suggestionSpan; 2564 } 2565 2566 // The first span dictates the background color of the highlighted text 2567 if (spanIndex == 0) underlineColor = suggestionSpan.getUnderlineColor(); 2568 2569 String[] suggestions = suggestionSpan.getSuggestions(); 2570 int nbSuggestions = suggestions.length; 2571 for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) { 2572 String suggestion = suggestions[suggestionIndex]; 2573 2574 boolean suggestionIsDuplicate = false; 2575 for (int i = 0; i < mNumberOfSuggestions; i++) { 2576 if (mSuggestionInfos[i].text.toString().equals(suggestion)) { 2577 SuggestionSpan otherSuggestionSpan = mSuggestionInfos[i].suggestionSpan; 2578 final int otherSpanStart = spannable.getSpanStart(otherSuggestionSpan); 2579 final int otherSpanEnd = spannable.getSpanEnd(otherSuggestionSpan); 2580 if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) { 2581 suggestionIsDuplicate = true; 2582 break; 2583 } 2584 } 2585 } 2586 2587 if (!suggestionIsDuplicate) { 2588 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2589 suggestionInfo.suggestionSpan = suggestionSpan; 2590 suggestionInfo.suggestionIndex = suggestionIndex; 2591 suggestionInfo.text.replace(0, suggestionInfo.text.length(), suggestion); 2592 2593 mNumberOfSuggestions++; 2594 2595 if (mNumberOfSuggestions == MAX_NUMBER_SUGGESTIONS) { 2596 // Also end outer for loop 2597 spanIndex = nbSpans; 2598 break; 2599 } 2600 } 2601 } 2602 } 2603 2604 for (int i = 0; i < mNumberOfSuggestions; i++) { 2605 highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd); 2606 } 2607 2608 // Add "Add to dictionary" item if there is a span with the misspelled flag 2609 if (misspelledSpan != null) { 2610 final int misspelledStart = spannable.getSpanStart(misspelledSpan); 2611 final int misspelledEnd = spannable.getSpanEnd(misspelledSpan); 2612 if (misspelledStart >= 0 && misspelledEnd > misspelledStart) { 2613 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2614 suggestionInfo.suggestionSpan = misspelledSpan; 2615 suggestionInfo.suggestionIndex = ADD_TO_DICTIONARY; 2616 suggestionInfo.text.replace(0, suggestionInfo.text.length(), mTextView. 2617 getContext().getString(com.android.internal.R.string.addToDictionary)); 2618 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0, 2619 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2620 2621 mNumberOfSuggestions++; 2622 } 2623 } 2624 2625 // Delete item 2626 SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; 2627 suggestionInfo.suggestionSpan = null; 2628 suggestionInfo.suggestionIndex = DELETE_TEXT; 2629 suggestionInfo.text.replace(0, suggestionInfo.text.length(), 2630 mTextView.getContext().getString(com.android.internal.R.string.deleteText)); 2631 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0, 2632 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2633 mNumberOfSuggestions++; 2634 2635 if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan(); 2636 if (underlineColor == 0) { 2637 // Fallback on the default highlight color when the first span does not provide one 2638 mSuggestionRangeSpan.setBackgroundColor(mTextView.mHighlightColor); 2639 } else { 2640 final float BACKGROUND_TRANSPARENCY = 0.4f; 2641 final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY); 2642 mSuggestionRangeSpan.setBackgroundColor( 2643 (underlineColor & 0x00FFFFFF) + (newAlpha << 24)); 2644 } 2645 spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd, 2646 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2647 2648 mSuggestionsAdapter.notifyDataSetChanged(); 2649 return true; 2650 } 2651 2652 private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart, 2653 int unionEnd) { 2654 final Spannable text = (Spannable) mTextView.getText(); 2655 final int spanStart = text.getSpanStart(suggestionInfo.suggestionSpan); 2656 final int spanEnd = text.getSpanEnd(suggestionInfo.suggestionSpan); 2657 2658 // Adjust the start/end of the suggestion span 2659 suggestionInfo.suggestionStart = spanStart - unionStart; 2660 suggestionInfo.suggestionEnd = suggestionInfo.suggestionStart 2661 + suggestionInfo.text.length(); 2662 2663 suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 2664 suggestionInfo.text.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 2665 2666 // Add the text before and after the span. 2667 final String textAsString = text.toString(); 2668 suggestionInfo.text.insert(0, textAsString.substring(unionStart, spanStart)); 2669 suggestionInfo.text.append(textAsString.substring(spanEnd, unionEnd)); 2670 } 2671 2672 @Override 2673 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 2674 Editable editable = (Editable) mTextView.getText(); 2675 SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 2676 2677 if (suggestionInfo.suggestionIndex == DELETE_TEXT) { 2678 final int spanUnionStart = editable.getSpanStart(mSuggestionRangeSpan); 2679 int spanUnionEnd = editable.getSpanEnd(mSuggestionRangeSpan); 2680 if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) { 2681 // Do not leave two adjacent spaces after deletion, or one at beginning of text 2682 if (spanUnionEnd < editable.length() && 2683 Character.isSpaceChar(editable.charAt(spanUnionEnd)) && 2684 (spanUnionStart == 0 || 2685 Character.isSpaceChar(editable.charAt(spanUnionStart - 1)))) { 2686 spanUnionEnd = spanUnionEnd + 1; 2687 } 2688 mTextView.deleteText_internal(spanUnionStart, spanUnionEnd); 2689 } 2690 hide(); 2691 return; 2692 } 2693 2694 final int spanStart = editable.getSpanStart(suggestionInfo.suggestionSpan); 2695 final int spanEnd = editable.getSpanEnd(suggestionInfo.suggestionSpan); 2696 if (spanStart < 0 || spanEnd <= spanStart) { 2697 // Span has been removed 2698 hide(); 2699 return; 2700 } 2701 2702 final String originalText = editable.toString().substring(spanStart, spanEnd); 2703 2704 if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY) { 2705 Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT); 2706 intent.putExtra("word", originalText); 2707 intent.putExtra("locale", mTextView.getTextServicesLocale().toString()); 2708 // Put a listener to replace the original text with a word which the user 2709 // modified in a user dictionary dialog. 2710 intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); 2711 mTextView.getContext().startActivity(intent); 2712 // There is no way to know if the word was indeed added. Re-check. 2713 // TODO The ExtractEditText should remove the span in the original text instead 2714 editable.removeSpan(suggestionInfo.suggestionSpan); 2715 Selection.setSelection(editable, spanEnd); 2716 updateSpellCheckSpans(spanStart, spanEnd, false); 2717 } else { 2718 // SuggestionSpans are removed by replace: save them before 2719 SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd, 2720 SuggestionSpan.class); 2721 final int length = suggestionSpans.length; 2722 int[] suggestionSpansStarts = new int[length]; 2723 int[] suggestionSpansEnds = new int[length]; 2724 int[] suggestionSpansFlags = new int[length]; 2725 for (int i = 0; i < length; i++) { 2726 final SuggestionSpan suggestionSpan = suggestionSpans[i]; 2727 suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan); 2728 suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan); 2729 suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan); 2730 2731 // Remove potential misspelled flags 2732 int suggestionSpanFlags = suggestionSpan.getFlags(); 2733 if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) > 0) { 2734 suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED; 2735 suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 2736 suggestionSpan.setFlags(suggestionSpanFlags); 2737 } 2738 } 2739 2740 final int suggestionStart = suggestionInfo.suggestionStart; 2741 final int suggestionEnd = suggestionInfo.suggestionEnd; 2742 final String suggestion = suggestionInfo.text.subSequence( 2743 suggestionStart, suggestionEnd).toString(); 2744 mTextView.replaceText_internal(spanStart, spanEnd, suggestion); 2745 2746 // Notify source IME of the suggestion pick. Do this before 2747 // swaping texts. 2748 suggestionInfo.suggestionSpan.notifySelection( 2749 mTextView.getContext(), originalText, suggestionInfo.suggestionIndex); 2750 2751 // Swap text content between actual text and Suggestion span 2752 String[] suggestions = suggestionInfo.suggestionSpan.getSuggestions(); 2753 suggestions[suggestionInfo.suggestionIndex] = originalText; 2754 2755 // Restore previous SuggestionSpans 2756 final int lengthDifference = suggestion.length() - (spanEnd - spanStart); 2757 for (int i = 0; i < length; i++) { 2758 // Only spans that include the modified region make sense after replacement 2759 // Spans partially included in the replaced region are removed, there is no 2760 // way to assign them a valid range after replacement 2761 if (suggestionSpansStarts[i] <= spanStart && 2762 suggestionSpansEnds[i] >= spanEnd) { 2763 mTextView.setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i], 2764 suggestionSpansEnds[i] + lengthDifference, suggestionSpansFlags[i]); 2765 } 2766 } 2767 2768 // Move cursor at the end of the replaced word 2769 final int newCursorPosition = spanEnd + lengthDifference; 2770 mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); 2771 } 2772 2773 hide(); 2774 } 2775 } 2776 2777 /** 2778 * An ActionMode Callback class that is used to provide actions while in text selection mode. 2779 * 2780 * The default callback provides a subset of Select All, Cut, Copy and Paste actions, depending 2781 * on which of these this TextView supports. 2782 */ 2783 private class SelectionActionModeCallback implements ActionMode.Callback { 2784 2785 @Override 2786 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 2787 TypedArray styledAttributes = mTextView.getContext().obtainStyledAttributes( 2788 com.android.internal.R.styleable.SelectionModeDrawables); 2789 2790 mode.setTitle(mTextView.getContext().getString( 2791 com.android.internal.R.string.textSelectionCABTitle)); 2792 mode.setSubtitle(null); 2793 mode.setTitleOptionalHint(true); 2794 2795 menu.add(0, TextView.ID_SELECT_ALL, 0, com.android.internal.R.string.selectAll). 2796 setIcon(styledAttributes.getResourceId( 2797 R.styleable.SelectionModeDrawables_actionModeSelectAllDrawable, 0)). 2798 setAlphabeticShortcut('a'). 2799 setShowAsAction( 2800 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2801 2802 if (mTextView.canCut()) { 2803 menu.add(0, TextView.ID_CUT, 0, com.android.internal.R.string.cut). 2804 setIcon(styledAttributes.getResourceId( 2805 R.styleable.SelectionModeDrawables_actionModeCutDrawable, 0)). 2806 setAlphabeticShortcut('x'). 2807 setShowAsAction( 2808 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2809 } 2810 2811 if (mTextView.canCopy()) { 2812 menu.add(0, TextView.ID_COPY, 0, com.android.internal.R.string.copy). 2813 setIcon(styledAttributes.getResourceId( 2814 R.styleable.SelectionModeDrawables_actionModeCopyDrawable, 0)). 2815 setAlphabeticShortcut('c'). 2816 setShowAsAction( 2817 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2818 } 2819 2820 if (mTextView.canPaste()) { 2821 menu.add(0, TextView.ID_PASTE, 0, com.android.internal.R.string.paste). 2822 setIcon(styledAttributes.getResourceId( 2823 R.styleable.SelectionModeDrawables_actionModePasteDrawable, 0)). 2824 setAlphabeticShortcut('v'). 2825 setShowAsAction( 2826 MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); 2827 } 2828 2829 styledAttributes.recycle(); 2830 2831 if (mCustomSelectionActionModeCallback != null) { 2832 if (!mCustomSelectionActionModeCallback.onCreateActionMode(mode, menu)) { 2833 // The custom mode can choose to cancel the action mode 2834 return false; 2835 } 2836 } 2837 2838 if (menu.hasVisibleItems() || mode.getCustomView() != null) { 2839 getSelectionController().show(); 2840 mTextView.setHasTransientState(true); 2841 return true; 2842 } else { 2843 return false; 2844 } 2845 } 2846 2847 @Override 2848 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 2849 if (mCustomSelectionActionModeCallback != null) { 2850 return mCustomSelectionActionModeCallback.onPrepareActionMode(mode, menu); 2851 } 2852 return true; 2853 } 2854 2855 @Override 2856 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 2857 if (mCustomSelectionActionModeCallback != null && 2858 mCustomSelectionActionModeCallback.onActionItemClicked(mode, item)) { 2859 return true; 2860 } 2861 return mTextView.onTextContextMenuItem(item.getItemId()); 2862 } 2863 2864 @Override 2865 public void onDestroyActionMode(ActionMode mode) { 2866 if (mCustomSelectionActionModeCallback != null) { 2867 mCustomSelectionActionModeCallback.onDestroyActionMode(mode); 2868 } 2869 2870 /* 2871 * If we're ending this mode because we're detaching from a window, 2872 * we still have selection state to preserve. Don't clear it, we'll 2873 * bring back the selection mode when (if) we get reattached. 2874 */ 2875 if (!mPreserveDetachedSelection) { 2876 Selection.setSelection((Spannable) mTextView.getText(), 2877 mTextView.getSelectionEnd()); 2878 mTextView.setHasTransientState(false); 2879 } 2880 2881 if (mSelectionModifierCursorController != null) { 2882 mSelectionModifierCursorController.hide(); 2883 } 2884 2885 mSelectionActionMode = null; 2886 } 2887 } 2888 2889 private class ActionPopupWindow extends PinnedPopupWindow implements OnClickListener { 2890 private static final int POPUP_TEXT_LAYOUT = 2891 com.android.internal.R.layout.text_edit_action_popup_text; 2892 private TextView mPasteTextView; 2893 private TextView mReplaceTextView; 2894 2895 @Override 2896 protected void createPopupWindow() { 2897 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 2898 com.android.internal.R.attr.textSelectHandleWindowStyle); 2899 mPopupWindow.setClippingEnabled(true); 2900 } 2901 2902 @Override 2903 protected void initContentView() { 2904 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 2905 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 2906 mContentView = linearLayout; 2907 mContentView.setBackgroundResource( 2908 com.android.internal.R.drawable.text_edit_paste_window); 2909 2910 LayoutInflater inflater = (LayoutInflater) mTextView.getContext(). 2911 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2912 2913 LayoutParams wrapContent = new LayoutParams( 2914 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 2915 2916 mPasteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2917 mPasteTextView.setLayoutParams(wrapContent); 2918 mContentView.addView(mPasteTextView); 2919 mPasteTextView.setText(com.android.internal.R.string.paste); 2920 mPasteTextView.setOnClickListener(this); 2921 2922 mReplaceTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2923 mReplaceTextView.setLayoutParams(wrapContent); 2924 mContentView.addView(mReplaceTextView); 2925 mReplaceTextView.setText(com.android.internal.R.string.replace); 2926 mReplaceTextView.setOnClickListener(this); 2927 } 2928 2929 @Override 2930 public void show() { 2931 boolean canPaste = mTextView.canPaste(); 2932 boolean canSuggest = mTextView.isSuggestionsEnabled() && isCursorInsideSuggestionSpan(); 2933 mPasteTextView.setVisibility(canPaste ? View.VISIBLE : View.GONE); 2934 mReplaceTextView.setVisibility(canSuggest ? View.VISIBLE : View.GONE); 2935 2936 if (!canPaste && !canSuggest) return; 2937 2938 super.show(); 2939 } 2940 2941 @Override 2942 public void onClick(View view) { 2943 if (view == mPasteTextView && mTextView.canPaste()) { 2944 mTextView.onTextContextMenuItem(TextView.ID_PASTE); 2945 hide(); 2946 } else if (view == mReplaceTextView) { 2947 int middle = (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 2948 stopSelectionActionMode(); 2949 Selection.setSelection((Spannable) mTextView.getText(), middle); 2950 showSuggestions(); 2951 } 2952 } 2953 2954 @Override 2955 protected int getTextOffset() { 2956 return (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 2957 } 2958 2959 @Override 2960 protected int getVerticalLocalPosition(int line) { 2961 return mTextView.getLayout().getLineTop(line) - mContentView.getMeasuredHeight(); 2962 } 2963 2964 @Override 2965 protected int clipVertically(int positionY) { 2966 if (positionY < 0) { 2967 final int offset = getTextOffset(); 2968 final Layout layout = mTextView.getLayout(); 2969 final int line = layout.getLineForOffset(offset); 2970 positionY += layout.getLineBottom(line) - layout.getLineTop(line); 2971 positionY += mContentView.getMeasuredHeight(); 2972 2973 // Assumes insertion and selection handles share the same height 2974 final Drawable handle = mTextView.getResources().getDrawable( 2975 mTextView.mTextSelectHandleRes); 2976 positionY += handle.getIntrinsicHeight(); 2977 } 2978 2979 return positionY; 2980 } 2981 } 2982 2983 private abstract class HandleView extends View implements TextViewPositionListener { 2984 protected Drawable mDrawable; 2985 protected Drawable mDrawableLtr; 2986 protected Drawable mDrawableRtl; 2987 private final PopupWindow mContainer; 2988 // Position with respect to the parent TextView 2989 private int mPositionX, mPositionY; 2990 private boolean mIsDragging; 2991 // Offset from touch position to mPosition 2992 private float mTouchToWindowOffsetX, mTouchToWindowOffsetY; 2993 protected int mHotspotX; 2994 // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up 2995 private float mTouchOffsetY; 2996 // Where the touch position should be on the handle to ensure a maximum cursor visibility 2997 private float mIdealVerticalOffset; 2998 // Parent's (TextView) previous position in window 2999 private int mLastParentX, mLastParentY; 3000 // Transient action popup window for Paste and Replace actions 3001 protected ActionPopupWindow mActionPopupWindow; 3002 // Previous text character offset 3003 private int mPreviousOffset = -1; 3004 // Previous text character offset 3005 private boolean mPositionHasChanged = true; 3006 // Used to delay the appearance of the action popup window 3007 private Runnable mActionPopupShower; 3008 3009 public HandleView(Drawable drawableLtr, Drawable drawableRtl) { 3010 super(mTextView.getContext()); 3011 mContainer = new PopupWindow(mTextView.getContext(), null, 3012 com.android.internal.R.attr.textSelectHandleWindowStyle); 3013 mContainer.setSplitTouchEnabled(true); 3014 mContainer.setClippingEnabled(false); 3015 mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 3016 mContainer.setContentView(this); 3017 3018 mDrawableLtr = drawableLtr; 3019 mDrawableRtl = drawableRtl; 3020 3021 updateDrawable(); 3022 3023 final int handleHeight = mDrawable.getIntrinsicHeight(); 3024 mTouchOffsetY = -0.3f * handleHeight; 3025 mIdealVerticalOffset = 0.7f * handleHeight; 3026 } 3027 3028 protected void updateDrawable() { 3029 final int offset = getCurrentCursorOffset(); 3030 final boolean isRtlCharAtOffset = mTextView.getLayout().isRtlCharAt(offset); 3031 mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr; 3032 mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset); 3033 } 3034 3035 protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun); 3036 3037 // Touch-up filter: number of previous positions remembered 3038 private static final int HISTORY_SIZE = 5; 3039 private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150; 3040 private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350; 3041 private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; 3042 private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; 3043 private int mPreviousOffsetIndex = 0; 3044 private int mNumberPreviousOffsets = 0; 3045 3046 private void startTouchUpFilter(int offset) { 3047 mNumberPreviousOffsets = 0; 3048 addPositionToTouchUpFilter(offset); 3049 } 3050 3051 private void addPositionToTouchUpFilter(int offset) { 3052 mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; 3053 mPreviousOffsets[mPreviousOffsetIndex] = offset; 3054 mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); 3055 mNumberPreviousOffsets++; 3056 } 3057 3058 private void filterOnTouchUp() { 3059 final long now = SystemClock.uptimeMillis(); 3060 int i = 0; 3061 int index = mPreviousOffsetIndex; 3062 final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); 3063 while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) { 3064 i++; 3065 index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; 3066 } 3067 3068 if (i > 0 && i < iMax && 3069 (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) { 3070 positionAtCursorOffset(mPreviousOffsets[index], false); 3071 } 3072 } 3073 3074 public boolean offsetHasBeenChanged() { 3075 return mNumberPreviousOffsets > 1; 3076 } 3077 3078 @Override 3079 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 3080 setMeasuredDimension(mDrawable.getIntrinsicWidth(), mDrawable.getIntrinsicHeight()); 3081 } 3082 3083 public void show() { 3084 if (isShowing()) return; 3085 3086 getPositionListener().addSubscriber(this, true /* local position may change */); 3087 3088 // Make sure the offset is always considered new, even when focusing at same position 3089 mPreviousOffset = -1; 3090 positionAtCursorOffset(getCurrentCursorOffset(), false); 3091 3092 hideActionPopupWindow(); 3093 } 3094 3095 protected void dismiss() { 3096 mIsDragging = false; 3097 mContainer.dismiss(); 3098 onDetached(); 3099 } 3100 3101 public void hide() { 3102 dismiss(); 3103 3104 getPositionListener().removeSubscriber(this); 3105 } 3106 3107 void showActionPopupWindow(int delay) { 3108 if (mActionPopupWindow == null) { 3109 mActionPopupWindow = new ActionPopupWindow(); 3110 } 3111 if (mActionPopupShower == null) { 3112 mActionPopupShower = new Runnable() { 3113 public void run() { 3114 mActionPopupWindow.show(); 3115 } 3116 }; 3117 } else { 3118 mTextView.removeCallbacks(mActionPopupShower); 3119 } 3120 mTextView.postDelayed(mActionPopupShower, delay); 3121 } 3122 3123 protected void hideActionPopupWindow() { 3124 if (mActionPopupShower != null) { 3125 mTextView.removeCallbacks(mActionPopupShower); 3126 } 3127 if (mActionPopupWindow != null) { 3128 mActionPopupWindow.hide(); 3129 } 3130 } 3131 3132 public boolean isShowing() { 3133 return mContainer.isShowing(); 3134 } 3135 3136 private boolean isVisible() { 3137 // Always show a dragging handle. 3138 if (mIsDragging) { 3139 return true; 3140 } 3141 3142 if (mTextView.isInBatchEditMode()) { 3143 return false; 3144 } 3145 3146 return isPositionVisible(mPositionX + mHotspotX, mPositionY); 3147 } 3148 3149 public abstract int getCurrentCursorOffset(); 3150 3151 protected abstract void updateSelection(int offset); 3152 3153 public abstract void updatePosition(float x, float y); 3154 3155 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 3156 // A HandleView relies on the layout, which may be nulled by external methods 3157 Layout layout = mTextView.getLayout(); 3158 if (layout == null) { 3159 // Will update controllers' state, hiding them and stopping selection mode if needed 3160 prepareCursorControllers(); 3161 return; 3162 } 3163 3164 boolean offsetChanged = offset != mPreviousOffset; 3165 if (offsetChanged || parentScrolled) { 3166 if (offsetChanged) { 3167 updateSelection(offset); 3168 addPositionToTouchUpFilter(offset); 3169 } 3170 final int line = layout.getLineForOffset(offset); 3171 3172 mPositionX = (int) (layout.getPrimaryHorizontal(offset) - 0.5f - mHotspotX); 3173 mPositionY = layout.getLineBottom(line); 3174 3175 // Take TextView's padding and scroll into account. 3176 mPositionX += mTextView.viewportToContentHorizontalOffset(); 3177 mPositionY += mTextView.viewportToContentVerticalOffset(); 3178 3179 mPreviousOffset = offset; 3180 mPositionHasChanged = true; 3181 } 3182 } 3183 3184 public void updatePosition(int parentPositionX, int parentPositionY, 3185 boolean parentPositionChanged, boolean parentScrolled) { 3186 positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled); 3187 if (parentPositionChanged || mPositionHasChanged) { 3188 if (mIsDragging) { 3189 // Update touchToWindow offset in case of parent scrolling while dragging 3190 if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) { 3191 mTouchToWindowOffsetX += parentPositionX - mLastParentX; 3192 mTouchToWindowOffsetY += parentPositionY - mLastParentY; 3193 mLastParentX = parentPositionX; 3194 mLastParentY = parentPositionY; 3195 } 3196 3197 onHandleMoved(); 3198 } 3199 3200 if (isVisible()) { 3201 final int positionX = parentPositionX + mPositionX; 3202 final int positionY = parentPositionY + mPositionY; 3203 if (isShowing()) { 3204 mContainer.update(positionX, positionY, -1, -1); 3205 } else { 3206 mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, 3207 positionX, positionY); 3208 } 3209 } else { 3210 if (isShowing()) { 3211 dismiss(); 3212 } 3213 } 3214 3215 mPositionHasChanged = false; 3216 } 3217 } 3218 3219 @Override 3220 protected void onDraw(Canvas c) { 3221 mDrawable.setBounds(0, 0, mRight - mLeft, mBottom - mTop); 3222 mDrawable.draw(c); 3223 } 3224 3225 @Override 3226 public boolean onTouchEvent(MotionEvent ev) { 3227 switch (ev.getActionMasked()) { 3228 case MotionEvent.ACTION_DOWN: { 3229 startTouchUpFilter(getCurrentCursorOffset()); 3230 mTouchToWindowOffsetX = ev.getRawX() - mPositionX; 3231 mTouchToWindowOffsetY = ev.getRawY() - mPositionY; 3232 3233 final PositionListener positionListener = getPositionListener(); 3234 mLastParentX = positionListener.getPositionX(); 3235 mLastParentY = positionListener.getPositionY(); 3236 mIsDragging = true; 3237 break; 3238 } 3239 3240 case MotionEvent.ACTION_MOVE: { 3241 final float rawX = ev.getRawX(); 3242 final float rawY = ev.getRawY(); 3243 3244 // Vertical hysteresis: vertical down movement tends to snap to ideal offset 3245 final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY; 3246 final float currentVerticalOffset = rawY - mPositionY - mLastParentY; 3247 float newVerticalOffset; 3248 if (previousVerticalOffset < mIdealVerticalOffset) { 3249 newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset); 3250 newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset); 3251 } else { 3252 newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset); 3253 newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset); 3254 } 3255 mTouchToWindowOffsetY = newVerticalOffset + mLastParentY; 3256 3257 final float newPosX = rawX - mTouchToWindowOffsetX + mHotspotX; 3258 final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY; 3259 3260 updatePosition(newPosX, newPosY); 3261 break; 3262 } 3263 3264 case MotionEvent.ACTION_UP: 3265 filterOnTouchUp(); 3266 mIsDragging = false; 3267 break; 3268 3269 case MotionEvent.ACTION_CANCEL: 3270 mIsDragging = false; 3271 break; 3272 } 3273 return true; 3274 } 3275 3276 public boolean isDragging() { 3277 return mIsDragging; 3278 } 3279 3280 void onHandleMoved() { 3281 hideActionPopupWindow(); 3282 } 3283 3284 public void onDetached() { 3285 hideActionPopupWindow(); 3286 } 3287 } 3288 3289 private class InsertionHandleView extends HandleView { 3290 private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000; 3291 private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds 3292 3293 // Used to detect taps on the insertion handle, which will affect the ActionPopupWindow 3294 private float mDownPositionX, mDownPositionY; 3295 private Runnable mHider; 3296 3297 public InsertionHandleView(Drawable drawable) { 3298 super(drawable, drawable); 3299 } 3300 3301 @Override 3302 public void show() { 3303 super.show(); 3304 3305 final long durationSinceCutOrCopy = 3306 SystemClock.uptimeMillis() - TextView.LAST_CUT_OR_COPY_TIME; 3307 if (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION) { 3308 showActionPopupWindow(0); 3309 } 3310 3311 hideAfterDelay(); 3312 } 3313 3314 public void showWithActionPopup() { 3315 show(); 3316 showActionPopupWindow(0); 3317 } 3318 3319 private void hideAfterDelay() { 3320 if (mHider == null) { 3321 mHider = new Runnable() { 3322 public void run() { 3323 hide(); 3324 } 3325 }; 3326 } else { 3327 removeHiderCallback(); 3328 } 3329 mTextView.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT); 3330 } 3331 3332 private void removeHiderCallback() { 3333 if (mHider != null) { 3334 mTextView.removeCallbacks(mHider); 3335 } 3336 } 3337 3338 @Override 3339 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3340 return drawable.getIntrinsicWidth() / 2; 3341 } 3342 3343 @Override 3344 public boolean onTouchEvent(MotionEvent ev) { 3345 final boolean result = super.onTouchEvent(ev); 3346 3347 switch (ev.getActionMasked()) { 3348 case MotionEvent.ACTION_DOWN: 3349 mDownPositionX = ev.getRawX(); 3350 mDownPositionY = ev.getRawY(); 3351 break; 3352 3353 case MotionEvent.ACTION_UP: 3354 if (!offsetHasBeenChanged()) { 3355 final float deltaX = mDownPositionX - ev.getRawX(); 3356 final float deltaY = mDownPositionY - ev.getRawY(); 3357 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3358 3359 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 3360 mTextView.getContext()); 3361 final int touchSlop = viewConfiguration.getScaledTouchSlop(); 3362 3363 if (distanceSquared < touchSlop * touchSlop) { 3364 if (mActionPopupWindow != null && mActionPopupWindow.isShowing()) { 3365 // Tapping on the handle dismisses the displayed action popup 3366 mActionPopupWindow.hide(); 3367 } else { 3368 showWithActionPopup(); 3369 } 3370 } 3371 } 3372 hideAfterDelay(); 3373 break; 3374 3375 case MotionEvent.ACTION_CANCEL: 3376 hideAfterDelay(); 3377 break; 3378 3379 default: 3380 break; 3381 } 3382 3383 return result; 3384 } 3385 3386 @Override 3387 public int getCurrentCursorOffset() { 3388 return mTextView.getSelectionStart(); 3389 } 3390 3391 @Override 3392 public void updateSelection(int offset) { 3393 Selection.setSelection((Spannable) mTextView.getText(), offset); 3394 } 3395 3396 @Override 3397 public void updatePosition(float x, float y) { 3398 positionAtCursorOffset(mTextView.getOffsetForPosition(x, y), false); 3399 } 3400 3401 @Override 3402 void onHandleMoved() { 3403 super.onHandleMoved(); 3404 removeHiderCallback(); 3405 } 3406 3407 @Override 3408 public void onDetached() { 3409 super.onDetached(); 3410 removeHiderCallback(); 3411 } 3412 } 3413 3414 private class SelectionStartHandleView extends HandleView { 3415 3416 public SelectionStartHandleView(Drawable drawableLtr, Drawable drawableRtl) { 3417 super(drawableLtr, drawableRtl); 3418 } 3419 3420 @Override 3421 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3422 if (isRtlRun) { 3423 return drawable.getIntrinsicWidth() / 4; 3424 } else { 3425 return (drawable.getIntrinsicWidth() * 3) / 4; 3426 } 3427 } 3428 3429 @Override 3430 public int getCurrentCursorOffset() { 3431 return mTextView.getSelectionStart(); 3432 } 3433 3434 @Override 3435 public void updateSelection(int offset) { 3436 Selection.setSelection((Spannable) mTextView.getText(), offset, 3437 mTextView.getSelectionEnd()); 3438 updateDrawable(); 3439 } 3440 3441 @Override 3442 public void updatePosition(float x, float y) { 3443 int offset = mTextView.getOffsetForPosition(x, y); 3444 3445 // Handles can not cross and selection is at least one character 3446 final int selectionEnd = mTextView.getSelectionEnd(); 3447 if (offset >= selectionEnd) offset = Math.max(0, selectionEnd - 1); 3448 3449 positionAtCursorOffset(offset, false); 3450 } 3451 3452 public ActionPopupWindow getActionPopupWindow() { 3453 return mActionPopupWindow; 3454 } 3455 } 3456 3457 private class SelectionEndHandleView extends HandleView { 3458 3459 public SelectionEndHandleView(Drawable drawableLtr, Drawable drawableRtl) { 3460 super(drawableLtr, drawableRtl); 3461 } 3462 3463 @Override 3464 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 3465 if (isRtlRun) { 3466 return (drawable.getIntrinsicWidth() * 3) / 4; 3467 } else { 3468 return drawable.getIntrinsicWidth() / 4; 3469 } 3470 } 3471 3472 @Override 3473 public int getCurrentCursorOffset() { 3474 return mTextView.getSelectionEnd(); 3475 } 3476 3477 @Override 3478 public void updateSelection(int offset) { 3479 Selection.setSelection((Spannable) mTextView.getText(), 3480 mTextView.getSelectionStart(), offset); 3481 updateDrawable(); 3482 } 3483 3484 @Override 3485 public void updatePosition(float x, float y) { 3486 int offset = mTextView.getOffsetForPosition(x, y); 3487 3488 // Handles can not cross and selection is at least one character 3489 final int selectionStart = mTextView.getSelectionStart(); 3490 if (offset <= selectionStart) { 3491 offset = Math.min(selectionStart + 1, mTextView.getText().length()); 3492 } 3493 3494 positionAtCursorOffset(offset, false); 3495 } 3496 3497 public void setActionPopupWindow(ActionPopupWindow actionPopupWindow) { 3498 mActionPopupWindow = actionPopupWindow; 3499 } 3500 } 3501 3502 /** 3503 * A CursorController instance can be used to control a cursor in the text. 3504 */ 3505 private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { 3506 /** 3507 * Makes the cursor controller visible on screen. 3508 * See also {@link #hide()}. 3509 */ 3510 public void show(); 3511 3512 /** 3513 * Hide the cursor controller from screen. 3514 * See also {@link #show()}. 3515 */ 3516 public void hide(); 3517 3518 /** 3519 * Called when the view is detached from window. Perform house keeping task, such as 3520 * stopping Runnable thread that would otherwise keep a reference on the context, thus 3521 * preventing the activity from being recycled. 3522 */ 3523 public void onDetached(); 3524 } 3525 3526 private class InsertionPointCursorController implements CursorController { 3527 private InsertionHandleView mHandle; 3528 3529 public void show() { 3530 getHandle().show(); 3531 } 3532 3533 public void showWithActionPopup() { 3534 getHandle().showWithActionPopup(); 3535 } 3536 3537 public void hide() { 3538 if (mHandle != null) { 3539 mHandle.hide(); 3540 } 3541 } 3542 3543 public void onTouchModeChanged(boolean isInTouchMode) { 3544 if (!isInTouchMode) { 3545 hide(); 3546 } 3547 } 3548 3549 private InsertionHandleView getHandle() { 3550 if (mSelectHandleCenter == null) { 3551 mSelectHandleCenter = mTextView.getResources().getDrawable( 3552 mTextView.mTextSelectHandleRes); 3553 } 3554 if (mHandle == null) { 3555 mHandle = new InsertionHandleView(mSelectHandleCenter); 3556 } 3557 return mHandle; 3558 } 3559 3560 @Override 3561 public void onDetached() { 3562 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 3563 observer.removeOnTouchModeChangeListener(this); 3564 3565 if (mHandle != null) mHandle.onDetached(); 3566 } 3567 } 3568 3569 class SelectionModifierCursorController implements CursorController { 3570 private static final int DELAY_BEFORE_REPLACE_ACTION = 200; // milliseconds 3571 // The cursor controller handles, lazily created when shown. 3572 private SelectionStartHandleView mStartHandle; 3573 private SelectionEndHandleView mEndHandle; 3574 // The offsets of that last touch down event. Remembered to start selection there. 3575 private int mMinTouchOffset, mMaxTouchOffset; 3576 3577 // Double tap detection 3578 private long mPreviousTapUpTime = 0; 3579 private float mDownPositionX, mDownPositionY; 3580 private boolean mGestureStayedInTapRegion; 3581 3582 SelectionModifierCursorController() { 3583 resetTouchOffsets(); 3584 } 3585 3586 public void show() { 3587 if (mTextView.isInBatchEditMode()) { 3588 return; 3589 } 3590 initDrawables(); 3591 initHandles(); 3592 hideInsertionPointCursorController(); 3593 } 3594 3595 private void initDrawables() { 3596 if (mSelectHandleLeft == null) { 3597 mSelectHandleLeft = mTextView.getContext().getResources().getDrawable( 3598 mTextView.mTextSelectHandleLeftRes); 3599 } 3600 if (mSelectHandleRight == null) { 3601 mSelectHandleRight = mTextView.getContext().getResources().getDrawable( 3602 mTextView.mTextSelectHandleRightRes); 3603 } 3604 } 3605 3606 private void initHandles() { 3607 // Lazy object creation has to be done before updatePosition() is called. 3608 if (mStartHandle == null) { 3609 mStartHandle = new SelectionStartHandleView(mSelectHandleLeft, mSelectHandleRight); 3610 } 3611 if (mEndHandle == null) { 3612 mEndHandle = new SelectionEndHandleView(mSelectHandleRight, mSelectHandleLeft); 3613 } 3614 3615 mStartHandle.show(); 3616 mEndHandle.show(); 3617 3618 // Make sure both left and right handles share the same ActionPopupWindow (so that 3619 // moving any of the handles hides the action popup). 3620 mStartHandle.showActionPopupWindow(DELAY_BEFORE_REPLACE_ACTION); 3621 mEndHandle.setActionPopupWindow(mStartHandle.getActionPopupWindow()); 3622 3623 hideInsertionPointCursorController(); 3624 } 3625 3626 public void hide() { 3627 if (mStartHandle != null) mStartHandle.hide(); 3628 if (mEndHandle != null) mEndHandle.hide(); 3629 } 3630 3631 public void onTouchEvent(MotionEvent event) { 3632 // This is done even when the View does not have focus, so that long presses can start 3633 // selection and tap can move cursor from this tap position. 3634 switch (event.getActionMasked()) { 3635 case MotionEvent.ACTION_DOWN: 3636 final float x = event.getX(); 3637 final float y = event.getY(); 3638 3639 // Remember finger down position, to be able to start selection from there 3640 mMinTouchOffset = mMaxTouchOffset = mTextView.getOffsetForPosition(x, y); 3641 3642 // Double tap detection 3643 if (mGestureStayedInTapRegion) { 3644 long duration = SystemClock.uptimeMillis() - mPreviousTapUpTime; 3645 if (duration <= ViewConfiguration.getDoubleTapTimeout()) { 3646 final float deltaX = x - mDownPositionX; 3647 final float deltaY = y - mDownPositionY; 3648 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3649 3650 ViewConfiguration viewConfiguration = ViewConfiguration.get( 3651 mTextView.getContext()); 3652 int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop(); 3653 boolean stayedInArea = distanceSquared < doubleTapSlop * doubleTapSlop; 3654 3655 if (stayedInArea && isPositionOnText(x, y)) { 3656 startSelectionActionMode(); 3657 mDiscardNextActionUp = true; 3658 } 3659 } 3660 } 3661 3662 mDownPositionX = x; 3663 mDownPositionY = y; 3664 mGestureStayedInTapRegion = true; 3665 break; 3666 3667 case MotionEvent.ACTION_POINTER_DOWN: 3668 case MotionEvent.ACTION_POINTER_UP: 3669 // Handle multi-point gestures. Keep min and max offset positions. 3670 // Only activated for devices that correctly handle multi-touch. 3671 if (mTextView.getContext().getPackageManager().hasSystemFeature( 3672 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { 3673 updateMinAndMaxOffsets(event); 3674 } 3675 break; 3676 3677 case MotionEvent.ACTION_MOVE: 3678 if (mGestureStayedInTapRegion) { 3679 final float deltaX = event.getX() - mDownPositionX; 3680 final float deltaY = event.getY() - mDownPositionY; 3681 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 3682 3683 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 3684 mTextView.getContext()); 3685 int doubleTapTouchSlop = viewConfiguration.getScaledDoubleTapTouchSlop(); 3686 3687 if (distanceSquared > doubleTapTouchSlop * doubleTapTouchSlop) { 3688 mGestureStayedInTapRegion = false; 3689 } 3690 } 3691 break; 3692 3693 case MotionEvent.ACTION_UP: 3694 mPreviousTapUpTime = SystemClock.uptimeMillis(); 3695 break; 3696 } 3697 } 3698 3699 /** 3700 * @param event 3701 */ 3702 private void updateMinAndMaxOffsets(MotionEvent event) { 3703 int pointerCount = event.getPointerCount(); 3704 for (int index = 0; index < pointerCount; index++) { 3705 int offset = mTextView.getOffsetForPosition(event.getX(index), event.getY(index)); 3706 if (offset < mMinTouchOffset) mMinTouchOffset = offset; 3707 if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; 3708 } 3709 } 3710 3711 public int getMinTouchOffset() { 3712 return mMinTouchOffset; 3713 } 3714 3715 public int getMaxTouchOffset() { 3716 return mMaxTouchOffset; 3717 } 3718 3719 public void resetTouchOffsets() { 3720 mMinTouchOffset = mMaxTouchOffset = -1; 3721 } 3722 3723 /** 3724 * @return true iff this controller is currently used to move the selection start. 3725 */ 3726 public boolean isSelectionStartDragged() { 3727 return mStartHandle != null && mStartHandle.isDragging(); 3728 } 3729 3730 public void onTouchModeChanged(boolean isInTouchMode) { 3731 if (!isInTouchMode) { 3732 hide(); 3733 } 3734 } 3735 3736 @Override 3737 public void onDetached() { 3738 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 3739 observer.removeOnTouchModeChangeListener(this); 3740 3741 if (mStartHandle != null) mStartHandle.onDetached(); 3742 if (mEndHandle != null) mEndHandle.onDetached(); 3743 } 3744 } 3745 3746 private class CorrectionHighlighter { 3747 private final Path mPath = new Path(); 3748 private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 3749 private int mStart, mEnd; 3750 private long mFadingStartTime; 3751 private RectF mTempRectF; 3752 private final static int FADE_OUT_DURATION = 400; 3753 3754 public CorrectionHighlighter() { 3755 mPaint.setCompatibilityScaling(mTextView.getResources().getCompatibilityInfo(). 3756 applicationScale); 3757 mPaint.setStyle(Paint.Style.FILL); 3758 } 3759 3760 public void highlight(CorrectionInfo info) { 3761 mStart = info.getOffset(); 3762 mEnd = mStart + info.getNewText().length(); 3763 mFadingStartTime = SystemClock.uptimeMillis(); 3764 3765 if (mStart < 0 || mEnd < 0) { 3766 stopAnimation(); 3767 } 3768 } 3769 3770 public void draw(Canvas canvas, int cursorOffsetVertical) { 3771 if (updatePath() && updatePaint()) { 3772 if (cursorOffsetVertical != 0) { 3773 canvas.translate(0, cursorOffsetVertical); 3774 } 3775 3776 canvas.drawPath(mPath, mPaint); 3777 3778 if (cursorOffsetVertical != 0) { 3779 canvas.translate(0, -cursorOffsetVertical); 3780 } 3781 invalidate(true); // TODO invalidate cursor region only 3782 } else { 3783 stopAnimation(); 3784 invalidate(false); // TODO invalidate cursor region only 3785 } 3786 } 3787 3788 private boolean updatePaint() { 3789 final long duration = SystemClock.uptimeMillis() - mFadingStartTime; 3790 if (duration > FADE_OUT_DURATION) return false; 3791 3792 final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; 3793 final int highlightColorAlpha = Color.alpha(mTextView.mHighlightColor); 3794 final int color = (mTextView.mHighlightColor & 0x00FFFFFF) + 3795 ((int) (highlightColorAlpha * coef) << 24); 3796 mPaint.setColor(color); 3797 return true; 3798 } 3799 3800 private boolean updatePath() { 3801 final Layout layout = mTextView.getLayout(); 3802 if (layout == null) return false; 3803 3804 // Update in case text is edited while the animation is run 3805 final int length = mTextView.getText().length(); 3806 int start = Math.min(length, mStart); 3807 int end = Math.min(length, mEnd); 3808 3809 mPath.reset(); 3810 layout.getSelectionPath(start, end, mPath); 3811 return true; 3812 } 3813 3814 private void invalidate(boolean delayed) { 3815 if (mTextView.getLayout() == null) return; 3816 3817 if (mTempRectF == null) mTempRectF = new RectF(); 3818 mPath.computeBounds(mTempRectF, false); 3819 3820 int left = mTextView.getCompoundPaddingLeft(); 3821 int top = mTextView.getExtendedPaddingTop() + mTextView.getVerticalOffset(true); 3822 3823 if (delayed) { 3824 mTextView.postInvalidateOnAnimation( 3825 left + (int) mTempRectF.left, top + (int) mTempRectF.top, 3826 left + (int) mTempRectF.right, top + (int) mTempRectF.bottom); 3827 } else { 3828 mTextView.postInvalidate((int) mTempRectF.left, (int) mTempRectF.top, 3829 (int) mTempRectF.right, (int) mTempRectF.bottom); 3830 } 3831 } 3832 3833 private void stopAnimation() { 3834 Editor.this.mCorrectionHighlighter = null; 3835 } 3836 } 3837 3838 private static class ErrorPopup extends PopupWindow { 3839 private boolean mAbove = false; 3840 private final TextView mView; 3841 private int mPopupInlineErrorBackgroundId = 0; 3842 private int mPopupInlineErrorAboveBackgroundId = 0; 3843 3844 ErrorPopup(TextView v, int width, int height) { 3845 super(v, width, height); 3846 mView = v; 3847 // Make sure the TextView has a background set as it will be used the first time it is 3848 // shown and positioned. Initialized with below background, which should have 3849 // dimensions identical to the above version for this to work (and is more likely). 3850 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 3851 com.android.internal.R.styleable.Theme_errorMessageBackground); 3852 mView.setBackgroundResource(mPopupInlineErrorBackgroundId); 3853 } 3854 3855 void fixDirection(boolean above) { 3856 mAbove = above; 3857 3858 if (above) { 3859 mPopupInlineErrorAboveBackgroundId = 3860 getResourceId(mPopupInlineErrorAboveBackgroundId, 3861 com.android.internal.R.styleable.Theme_errorMessageAboveBackground); 3862 } else { 3863 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 3864 com.android.internal.R.styleable.Theme_errorMessageBackground); 3865 } 3866 3867 mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId : 3868 mPopupInlineErrorBackgroundId); 3869 } 3870 3871 private int getResourceId(int currentId, int index) { 3872 if (currentId == 0) { 3873 TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( 3874 R.styleable.Theme); 3875 currentId = styledAttributes.getResourceId(index, 0); 3876 styledAttributes.recycle(); 3877 } 3878 return currentId; 3879 } 3880 3881 @Override 3882 public void update(int x, int y, int w, int h, boolean force) { 3883 super.update(x, y, w, h, force); 3884 3885 boolean above = isAboveAnchor(); 3886 if (above != mAbove) { 3887 fixDirection(above); 3888 } 3889 } 3890 } 3891 3892 static class InputContentType { 3893 int imeOptions = EditorInfo.IME_NULL; 3894 String privateImeOptions; 3895 CharSequence imeActionLabel; 3896 int imeActionId; 3897 Bundle extras; 3898 OnEditorActionListener onEditorActionListener; 3899 boolean enterDown; 3900 } 3901 3902 static class InputMethodState { 3903 Rect mCursorRectInWindow = new Rect(); 3904 RectF mTmpRectF = new RectF(); 3905 float[] mTmpOffset = new float[2]; 3906 ExtractedTextRequest mExtractedTextRequest; 3907 final ExtractedText mExtractedText = new ExtractedText(); 3908 int mBatchEditNesting; 3909 boolean mCursorChanged; 3910 boolean mSelectionModeChanged; 3911 boolean mContentChanged; 3912 int mChangedStart, mChangedEnd, mChangedDelta; 3913 } 3914 3915 public static class UndoInputFilter implements InputFilter { 3916 final Editor mEditor; 3917 3918 public UndoInputFilter(Editor editor) { 3919 mEditor = editor; 3920 } 3921 3922 @Override 3923 public CharSequence filter(CharSequence source, int start, int end, 3924 Spanned dest, int dstart, int dend) { 3925 if (DEBUG_UNDO) { 3926 Log.d(TAG, "filter: source=" + source + " (" + start + "-" + end + ")"); 3927 Log.d(TAG, "filter: dest=" + dest + " (" + dstart + "-" + dend + ")"); 3928 } 3929 final UndoManager um = mEditor.mUndoManager; 3930 if (um.isInUndo()) { 3931 if (DEBUG_UNDO) Log.d(TAG, "*** skipping, currently performing undo/redo"); 3932 return null; 3933 } 3934 3935 um.beginUpdate("Edit text"); 3936 TextModifyOperation op = um.getLastOperation( 3937 TextModifyOperation.class, mEditor.mUndoOwner, UndoManager.MERGE_MODE_UNIQUE); 3938 if (op != null) { 3939 if (DEBUG_UNDO) Log.d(TAG, "Last op: range=(" + op.mRangeStart + "-" + op.mRangeEnd 3940 + "), oldText=" + op.mOldText); 3941 // See if we can continue modifying this operation. 3942 if (op.mOldText == null) { 3943 // The current operation is an add... are we adding more? We are adding 3944 // more if we are either appending new text to the end of the last edit or 3945 // completely replacing some or all of the last edit. 3946 if (start < end && ((dstart >= op.mRangeStart && dend <= op.mRangeEnd) 3947 || (dstart == op.mRangeEnd && dend == op.mRangeEnd))) { 3948 op.mRangeEnd = dstart + (end-start); 3949 um.endUpdate(); 3950 if (DEBUG_UNDO) Log.d(TAG, "*** merging with last op, mRangeEnd=" 3951 + op.mRangeEnd); 3952 return null; 3953 } 3954 } else { 3955 // The current operation is a delete... can we delete more? 3956 if (start == end && dend == op.mRangeStart-1) { 3957 SpannableStringBuilder str; 3958 if (op.mOldText instanceof SpannableString) { 3959 str = (SpannableStringBuilder)op.mOldText; 3960 } else { 3961 str = new SpannableStringBuilder(op.mOldText); 3962 } 3963 str.insert(0, dest, dstart, dend); 3964 op.mRangeStart = dstart; 3965 op.mOldText = str; 3966 um.endUpdate(); 3967 if (DEBUG_UNDO) Log.d(TAG, "*** merging with last op, range=(" 3968 + op.mRangeStart + "-" + op.mRangeEnd 3969 + "), oldText=" + op.mOldText); 3970 return null; 3971 } 3972 } 3973 3974 // Couldn't add to the current undo operation, need to start a new 3975 // undo state for a new undo operation. 3976 um.commitState(null); 3977 um.setUndoLabel("Edit text"); 3978 } 3979 3980 // Create a new undo state reflecting the operation being performed. 3981 op = new TextModifyOperation(mEditor.mUndoOwner); 3982 op.mRangeStart = dstart; 3983 if (start < end) { 3984 op.mRangeEnd = dstart + (end-start); 3985 } else { 3986 op.mRangeEnd = dstart; 3987 } 3988 if (dstart < dend) { 3989 op.mOldText = dest.subSequence(dstart, dend); 3990 } 3991 if (DEBUG_UNDO) Log.d(TAG, "*** adding new op, range=(" + op.mRangeStart 3992 + "-" + op.mRangeEnd + "), oldText=" + op.mOldText); 3993 um.addOperation(op, UndoManager.MERGE_MODE_NONE); 3994 um.endUpdate(); 3995 return null; 3996 } 3997 } 3998 3999 public static class TextModifyOperation extends UndoOperation<TextView> { 4000 int mRangeStart, mRangeEnd; 4001 CharSequence mOldText; 4002 4003 public TextModifyOperation(UndoOwner owner) { 4004 super(owner); 4005 } 4006 4007 public TextModifyOperation(Parcel src, ClassLoader loader) { 4008 super(src, loader); 4009 mRangeStart = src.readInt(); 4010 mRangeEnd = src.readInt(); 4011 mOldText = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(src); 4012 } 4013 4014 @Override 4015 public void commit() { 4016 } 4017 4018 @Override 4019 public void undo() { 4020 swapText(); 4021 } 4022 4023 @Override 4024 public void redo() { 4025 swapText(); 4026 } 4027 4028 private void swapText() { 4029 // Both undo and redo involves swapping the contents of the range 4030 // in the text view with our local text. 4031 TextView tv = getOwnerData(); 4032 Editable editable = (Editable)tv.getText(); 4033 CharSequence curText; 4034 if (mRangeStart >= mRangeEnd) { 4035 curText = null; 4036 } else { 4037 curText = editable.subSequence(mRangeStart, mRangeEnd); 4038 } 4039 if (DEBUG_UNDO) { 4040 Log.d(TAG, "Swap: range=(" + mRangeStart + "-" + mRangeEnd 4041 + "), oldText=" + mOldText); 4042 Log.d(TAG, "Swap: curText=" + curText); 4043 } 4044 if (mOldText == null) { 4045 editable.delete(mRangeStart, mRangeEnd); 4046 mRangeEnd = mRangeStart; 4047 } else { 4048 editable.replace(mRangeStart, mRangeEnd, mOldText); 4049 mRangeEnd = mRangeStart + mOldText.length(); 4050 } 4051 mOldText = curText; 4052 } 4053 4054 @Override 4055 public void writeToParcel(Parcel dest, int flags) { 4056 dest.writeInt(mRangeStart); 4057 dest.writeInt(mRangeEnd); 4058 TextUtils.writeToParcel(mOldText, dest, flags); 4059 } 4060 4061 public static final Parcelable.ClassLoaderCreator<TextModifyOperation> CREATOR 4062 = new Parcelable.ClassLoaderCreator<TextModifyOperation>() { 4063 public TextModifyOperation createFromParcel(Parcel in) { 4064 return new TextModifyOperation(in, null); 4065 } 4066 4067 public TextModifyOperation createFromParcel(Parcel in, ClassLoader loader) { 4068 return new TextModifyOperation(in, loader); 4069 } 4070 4071 public TextModifyOperation[] newArray(int size) { 4072 return new TextModifyOperation[size]; 4073 } 4074 }; 4075 } 4076 } 4077