Editor.java revision f8e0da2624e1f5d99a493889e789e5f533b6fe0c
1/* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.widget; 18 19import android.R; 20import android.annotation.IntDef; 21import android.annotation.NonNull; 22import android.annotation.Nullable; 23import android.app.PendingIntent; 24import android.app.PendingIntent.CanceledException; 25import android.content.ClipData; 26import android.content.ClipData.Item; 27import android.content.Context; 28import android.content.Intent; 29import android.content.UndoManager; 30import android.content.UndoOperation; 31import android.content.UndoOwner; 32import android.content.pm.PackageManager; 33import android.content.pm.ResolveInfo; 34import android.content.res.TypedArray; 35import android.graphics.Canvas; 36import android.graphics.Color; 37import android.graphics.Matrix; 38import android.graphics.Paint; 39import android.graphics.Path; 40import android.graphics.Rect; 41import android.graphics.RectF; 42import android.graphics.drawable.ColorDrawable; 43import android.graphics.drawable.Drawable; 44import android.os.Bundle; 45import android.os.Parcel; 46import android.os.Parcelable; 47import android.os.ParcelableParcel; 48import android.os.SystemClock; 49import android.provider.Settings; 50import android.text.DynamicLayout; 51import android.text.Editable; 52import android.text.InputFilter; 53import android.text.InputType; 54import android.text.Layout; 55import android.text.ParcelableSpan; 56import android.text.Selection; 57import android.text.SpanWatcher; 58import android.text.Spannable; 59import android.text.SpannableStringBuilder; 60import android.text.Spanned; 61import android.text.StaticLayout; 62import android.text.TextUtils; 63import android.text.method.KeyListener; 64import android.text.method.MetaKeyKeyListener; 65import android.text.method.MovementMethod; 66import android.text.method.WordIterator; 67import android.text.style.EasyEditSpan; 68import android.text.style.SuggestionRangeSpan; 69import android.text.style.SuggestionSpan; 70import android.text.style.TextAppearanceSpan; 71import android.text.style.URLSpan; 72import android.util.DisplayMetrics; 73import android.util.LocaleList; 74import android.util.Log; 75import android.util.SparseArray; 76import android.view.ActionMode; 77import android.view.ActionMode.Callback; 78import android.view.ContextMenu; 79import android.view.DisplayListCanvas; 80import android.view.DragEvent; 81import android.view.DropPermissions; 82import android.view.Gravity; 83import android.view.InputDevice; 84import android.view.LayoutInflater; 85import android.view.Menu; 86import android.view.MenuItem; 87import android.view.MotionEvent; 88import android.view.RenderNode; 89import android.view.SubMenu; 90import android.view.View; 91import android.view.View.DragShadowBuilder; 92import android.view.View.OnClickListener; 93import android.view.ViewConfiguration; 94import android.view.ViewGroup; 95import android.view.ViewGroup.LayoutParams; 96import android.view.ViewParent; 97import android.view.ViewTreeObserver; 98import android.view.WindowManager; 99import android.view.accessibility.AccessibilityNodeInfo; 100import android.view.inputmethod.CorrectionInfo; 101import android.view.inputmethod.CursorAnchorInfo; 102import android.view.inputmethod.EditorInfo; 103import android.view.inputmethod.ExtractedText; 104import android.view.inputmethod.ExtractedTextRequest; 105import android.view.inputmethod.InputConnection; 106import android.view.inputmethod.InputMethodManager; 107import android.widget.AdapterView.OnItemClickListener; 108import android.widget.TextView.Drawables; 109import android.widget.TextView.OnEditorActionListener; 110 111import com.android.internal.annotations.VisibleForTesting; 112import com.android.internal.util.ArrayUtils; 113import com.android.internal.util.GrowingArrayUtils; 114import com.android.internal.util.Preconditions; 115import com.android.internal.widget.EditableInputConnection; 116 117import java.lang.annotation.Retention; 118import java.lang.annotation.RetentionPolicy; 119import java.text.BreakIterator; 120import java.util.Arrays; 121import java.util.Comparator; 122import java.util.HashMap; 123import java.util.List; 124 125 126/** 127 * Helper class used by TextView to handle editable text views. 128 * 129 * @hide 130 */ 131public class Editor { 132 private static final String TAG = "Editor"; 133 private static final boolean DEBUG_UNDO = false; 134 135 static final int BLINK = 500; 136 private static final float[] TEMP_POSITION = new float[2]; 137 private static int DRAG_SHADOW_MAX_TEXT_LENGTH = 20; 138 private static final float LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS = 0.5f; 139 private static final int UNSET_X_VALUE = -1; 140 private static final int UNSET_LINE = -1; 141 // Tag used when the Editor maintains its own separate UndoManager. 142 private static final String UNDO_OWNER_TAG = "Editor"; 143 144 // Ordering constants used to place the Action Mode or context menu items in their menu. 145 private static final int MENU_ITEM_ORDER_UNDO = 1; 146 private static final int MENU_ITEM_ORDER_REDO = 2; 147 private static final int MENU_ITEM_ORDER_CUT = 3; 148 private static final int MENU_ITEM_ORDER_COPY = 4; 149 private static final int MENU_ITEM_ORDER_PASTE = 5; 150 private static final int MENU_ITEM_ORDER_PASTE_AS_PLAIN_TEXT = 6; 151 private static final int MENU_ITEM_ORDER_SHARE = 7; 152 private static final int MENU_ITEM_ORDER_SELECT_ALL = 8; 153 private static final int MENU_ITEM_ORDER_REPLACE = 9; 154 private static final int MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START = 10; 155 156 // Each Editor manages its own undo stack. 157 private final UndoManager mUndoManager = new UndoManager(); 158 private UndoOwner mUndoOwner = mUndoManager.getOwner(UNDO_OWNER_TAG, this); 159 final UndoInputFilter mUndoInputFilter = new UndoInputFilter(this); 160 boolean mAllowUndo = true; 161 162 // Cursor Controllers. 163 InsertionPointCursorController mInsertionPointCursorController; 164 SelectionModifierCursorController mSelectionModifierCursorController; 165 // Action mode used when text is selected or when actions on an insertion cursor are triggered. 166 ActionMode mTextActionMode; 167 boolean mInsertionControllerEnabled; 168 boolean mSelectionControllerEnabled; 169 170 // Used to highlight a word when it is corrected by the IME 171 CorrectionHighlighter mCorrectionHighlighter; 172 173 InputContentType mInputContentType; 174 InputMethodState mInputMethodState; 175 176 private static class TextRenderNode { 177 RenderNode renderNode; 178 boolean isDirty; 179 public TextRenderNode(String name) { 180 isDirty = true; 181 renderNode = RenderNode.create(name, null); 182 } 183 boolean needsRecord() { return isDirty || !renderNode.isValid(); } 184 } 185 TextRenderNode[] mTextRenderNodes; 186 187 boolean mFrozenWithFocus; 188 boolean mSelectionMoved; 189 boolean mTouchFocusSelected; 190 191 KeyListener mKeyListener; 192 int mInputType = EditorInfo.TYPE_NULL; 193 194 boolean mDiscardNextActionUp; 195 boolean mIgnoreActionUpEvent; 196 private boolean mIgnoreNextMouseActionUpOrDown; 197 198 long mShowCursor; 199 Blink mBlink; 200 201 boolean mCursorVisible = true; 202 boolean mSelectAllOnFocus; 203 boolean mTextIsSelectable; 204 205 CharSequence mError; 206 boolean mErrorWasChanged; 207 ErrorPopup mErrorPopup; 208 209 /** 210 * This flag is set if the TextView tries to display an error before it 211 * is attached to the window (so its position is still unknown). 212 * It causes the error to be shown later, when onAttachedToWindow() 213 * is called. 214 */ 215 boolean mShowErrorAfterAttach; 216 217 boolean mInBatchEditControllers; 218 boolean mShowSoftInputOnFocus = true; 219 private boolean mPreserveSelection; 220 boolean mTemporaryDetach; 221 222 boolean mIsBeingLongClicked; 223 224 SuggestionsPopupWindow mSuggestionsPopupWindow; 225 SuggestionRangeSpan mSuggestionRangeSpan; 226 Runnable mShowSuggestionRunnable; 227 228 final Drawable[] mCursorDrawable = new Drawable[2]; 229 int mCursorCount; // Current number of used mCursorDrawable: 0 (resource=0), 1 or 2 (split) 230 231 private Drawable mSelectHandleLeft; 232 private Drawable mSelectHandleRight; 233 private Drawable mSelectHandleCenter; 234 235 // Global listener that detects changes in the global position of the TextView 236 private PositionListener mPositionListener; 237 238 float mLastDownPositionX, mLastDownPositionY; 239 private float mContextMenuAnchorX, mContextMenuAnchorY; 240 Callback mCustomSelectionActionModeCallback; 241 Callback mCustomInsertionActionModeCallback; 242 243 // Set when this TextView gained focus with some text selected. Will start selection mode. 244 boolean mCreatedWithASelection; 245 246 // Indicates the current tap state (first tap, double tap, or triple click). 247 private int mTapState = TAP_STATE_INITIAL; 248 private long mLastTouchUpTime = 0; 249 private static final int TAP_STATE_INITIAL = 0; 250 private static final int TAP_STATE_FIRST_TAP = 1; 251 private static final int TAP_STATE_DOUBLE_TAP = 2; 252 // Only for mouse input. 253 private static final int TAP_STATE_TRIPLE_CLICK = 3; 254 255 // The button state as of the last time #onTouchEvent is called. 256 private int mLastButtonState; 257 258 private Runnable mInsertionActionModeRunnable; 259 260 // The span controller helps monitoring the changes to which the Editor needs to react: 261 // - EasyEditSpans, for which we have some UI to display on attach and on hide 262 // - SelectionSpans, for which we need to call updateSelection if an IME is attached 263 private SpanController mSpanController; 264 265 WordIterator mWordIterator; 266 SpellChecker mSpellChecker; 267 268 // This word iterator is set with text and used to determine word boundaries 269 // when a user is selecting text. 270 private WordIterator mWordIteratorWithText; 271 // Indicate that the text in the word iterator needs to be updated. 272 private boolean mUpdateWordIteratorText; 273 274 private Rect mTempRect; 275 276 private TextView mTextView; 277 278 final ProcessTextIntentActionsHandler mProcessTextIntentActionsHandler; 279 280 final CursorAnchorInfoNotifier mCursorAnchorInfoNotifier = new CursorAnchorInfoNotifier(); 281 282 private final Runnable mShowFloatingToolbar = new Runnable() { 283 @Override 284 public void run() { 285 if (mTextActionMode != null) { 286 mTextActionMode.hide(0); // hide off. 287 } 288 } 289 }; 290 291 boolean mIsInsertionActionModeStartPending = false; 292 293 private final SuggestionHelper mSuggestionHelper = new SuggestionHelper(); 294 295 Editor(TextView textView) { 296 mTextView = textView; 297 // Synchronize the filter list, which places the undo input filter at the end. 298 mTextView.setFilters(mTextView.getFilters()); 299 mProcessTextIntentActionsHandler = new ProcessTextIntentActionsHandler(this); 300 } 301 302 ParcelableParcel saveInstanceState() { 303 ParcelableParcel state = new ParcelableParcel(getClass().getClassLoader()); 304 Parcel parcel = state.getParcel(); 305 mUndoManager.saveInstanceState(parcel); 306 mUndoInputFilter.saveInstanceState(parcel); 307 return state; 308 } 309 310 void restoreInstanceState(ParcelableParcel state) { 311 Parcel parcel = state.getParcel(); 312 mUndoManager.restoreInstanceState(parcel, state.getClassLoader()); 313 mUndoInputFilter.restoreInstanceState(parcel); 314 // Re-associate this object as the owner of undo state. 315 mUndoOwner = mUndoManager.getOwner(UNDO_OWNER_TAG, this); 316 } 317 318 /** 319 * Forgets all undo and redo operations for this Editor. 320 */ 321 void forgetUndoRedo() { 322 UndoOwner[] owners = { mUndoOwner }; 323 mUndoManager.forgetUndos(owners, -1 /* all */); 324 mUndoManager.forgetRedos(owners, -1 /* all */); 325 } 326 327 boolean canUndo() { 328 UndoOwner[] owners = { mUndoOwner }; 329 return mAllowUndo && mUndoManager.countUndos(owners) > 0; 330 } 331 332 boolean canRedo() { 333 UndoOwner[] owners = { mUndoOwner }; 334 return mAllowUndo && mUndoManager.countRedos(owners) > 0; 335 } 336 337 void undo() { 338 if (!mAllowUndo) { 339 return; 340 } 341 UndoOwner[] owners = { mUndoOwner }; 342 mUndoManager.undo(owners, 1); // Undo 1 action. 343 } 344 345 void redo() { 346 if (!mAllowUndo) { 347 return; 348 } 349 UndoOwner[] owners = { mUndoOwner }; 350 mUndoManager.redo(owners, 1); // Redo 1 action. 351 } 352 353 void replace() { 354 if (mSuggestionsPopupWindow == null) { 355 mSuggestionsPopupWindow = new SuggestionsPopupWindow(); 356 } 357 hideCursorAndSpanControllers(); 358 mSuggestionsPopupWindow.show(); 359 360 int middle = (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 361 Selection.setSelection((Spannable) mTextView.getText(), middle); 362 } 363 364 void onAttachedToWindow() { 365 if (mShowErrorAfterAttach) { 366 showError(); 367 mShowErrorAfterAttach = false; 368 } 369 mTemporaryDetach = false; 370 371 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 372 // No need to create the controller. 373 // The get method will add the listener on controller creation. 374 if (mInsertionPointCursorController != null) { 375 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 376 } 377 if (mSelectionModifierCursorController != null) { 378 mSelectionModifierCursorController.resetTouchOffsets(); 379 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 380 } 381 updateSpellCheckSpans(0, mTextView.getText().length(), 382 true /* create the spell checker if needed */); 383 384 if (mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 385 // We had an active selection from before, start the selection mode. 386 startSelectionActionMode(); 387 } 388 389 getPositionListener().addSubscriber(mCursorAnchorInfoNotifier, true); 390 resumeBlink(); 391 } 392 393 void onDetachedFromWindow() { 394 getPositionListener().removeSubscriber(mCursorAnchorInfoNotifier); 395 396 if (mError != null) { 397 hideError(); 398 } 399 400 suspendBlink(); 401 402 if (mInsertionPointCursorController != null) { 403 mInsertionPointCursorController.onDetached(); 404 } 405 406 if (mSelectionModifierCursorController != null) { 407 mSelectionModifierCursorController.onDetached(); 408 } 409 410 if (mShowSuggestionRunnable != null) { 411 mTextView.removeCallbacks(mShowSuggestionRunnable); 412 } 413 414 // Cancel the single tap delayed runnable. 415 if (mInsertionActionModeRunnable != null) { 416 mTextView.removeCallbacks(mInsertionActionModeRunnable); 417 } 418 419 mTextView.removeCallbacks(mShowFloatingToolbar); 420 421 discardTextDisplayLists(); 422 423 if (mSpellChecker != null) { 424 mSpellChecker.closeSession(); 425 // Forces the creation of a new SpellChecker next time this window is created. 426 // Will handle the cases where the settings has been changed in the meantime. 427 mSpellChecker = null; 428 } 429 430 hideCursorAndSpanControllers(); 431 stopTextActionModeWithPreservingSelection(); 432 mTemporaryDetach = false; 433 } 434 435 private void discardTextDisplayLists() { 436 if (mTextRenderNodes != null) { 437 for (int i = 0; i < mTextRenderNodes.length; i++) { 438 RenderNode displayList = mTextRenderNodes[i] != null 439 ? mTextRenderNodes[i].renderNode : null; 440 if (displayList != null && displayList.isValid()) { 441 displayList.discardDisplayList(); 442 } 443 } 444 } 445 } 446 447 private void showError() { 448 if (mTextView.getWindowToken() == null) { 449 mShowErrorAfterAttach = true; 450 return; 451 } 452 453 if (mErrorPopup == null) { 454 LayoutInflater inflater = LayoutInflater.from(mTextView.getContext()); 455 final TextView err = (TextView) inflater.inflate( 456 com.android.internal.R.layout.textview_hint, null); 457 458 final float scale = mTextView.getResources().getDisplayMetrics().density; 459 mErrorPopup = new ErrorPopup(err, (int)(200 * scale + 0.5f), (int)(50 * scale + 0.5f)); 460 mErrorPopup.setFocusable(false); 461 // The user is entering text, so the input method is needed. We 462 // don't want the popup to be displayed on top of it. 463 mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); 464 } 465 466 TextView tv = (TextView) mErrorPopup.getContentView(); 467 chooseSize(mErrorPopup, mError, tv); 468 tv.setText(mError); 469 470 mErrorPopup.showAsDropDown(mTextView, getErrorX(), getErrorY()); 471 mErrorPopup.fixDirection(mErrorPopup.isAboveAnchor()); 472 } 473 474 public void setError(CharSequence error, Drawable icon) { 475 mError = TextUtils.stringOrSpannedString(error); 476 mErrorWasChanged = true; 477 478 if (mError == null) { 479 setErrorIcon(null); 480 if (mErrorPopup != null) { 481 if (mErrorPopup.isShowing()) { 482 mErrorPopup.dismiss(); 483 } 484 485 mErrorPopup = null; 486 } 487 mShowErrorAfterAttach = false; 488 } else { 489 setErrorIcon(icon); 490 if (mTextView.isFocused()) { 491 showError(); 492 } 493 } 494 } 495 496 private void setErrorIcon(Drawable icon) { 497 Drawables dr = mTextView.mDrawables; 498 if (dr == null) { 499 mTextView.mDrawables = dr = new Drawables(mTextView.getContext()); 500 } 501 dr.setErrorDrawable(icon, mTextView); 502 503 mTextView.resetResolvedDrawables(); 504 mTextView.invalidate(); 505 mTextView.requestLayout(); 506 } 507 508 private void hideError() { 509 if (mErrorPopup != null) { 510 if (mErrorPopup.isShowing()) { 511 mErrorPopup.dismiss(); 512 } 513 } 514 515 mShowErrorAfterAttach = false; 516 } 517 518 /** 519 * Returns the X offset to make the pointy top of the error point 520 * at the middle of the error icon. 521 */ 522 private int getErrorX() { 523 /* 524 * The "25" is the distance between the point and the right edge 525 * of the background 526 */ 527 final float scale = mTextView.getResources().getDisplayMetrics().density; 528 529 final Drawables dr = mTextView.mDrawables; 530 531 final int layoutDirection = mTextView.getLayoutDirection(); 532 int errorX; 533 int offset; 534 switch (layoutDirection) { 535 default: 536 case View.LAYOUT_DIRECTION_LTR: 537 offset = - (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f); 538 errorX = mTextView.getWidth() - mErrorPopup.getWidth() - 539 mTextView.getPaddingRight() + offset; 540 break; 541 case View.LAYOUT_DIRECTION_RTL: 542 offset = (dr != null ? dr.mDrawableSizeLeft : 0) / 2 - (int) (25 * scale + 0.5f); 543 errorX = mTextView.getPaddingLeft() + offset; 544 break; 545 } 546 return errorX; 547 } 548 549 /** 550 * Returns the Y offset to make the pointy top of the error point 551 * at the bottom of the error icon. 552 */ 553 private int getErrorY() { 554 /* 555 * Compound, not extended, because the icon is not clipped 556 * if the text height is smaller. 557 */ 558 final int compoundPaddingTop = mTextView.getCompoundPaddingTop(); 559 int vspace = mTextView.getBottom() - mTextView.getTop() - 560 mTextView.getCompoundPaddingBottom() - compoundPaddingTop; 561 562 final Drawables dr = mTextView.mDrawables; 563 564 final int layoutDirection = mTextView.getLayoutDirection(); 565 int height; 566 switch (layoutDirection) { 567 default: 568 case View.LAYOUT_DIRECTION_LTR: 569 height = (dr != null ? dr.mDrawableHeightRight : 0); 570 break; 571 case View.LAYOUT_DIRECTION_RTL: 572 height = (dr != null ? dr.mDrawableHeightLeft : 0); 573 break; 574 } 575 576 int icontop = compoundPaddingTop + (vspace - height) / 2; 577 578 /* 579 * The "2" is the distance between the point and the top edge 580 * of the background. 581 */ 582 final float scale = mTextView.getResources().getDisplayMetrics().density; 583 return icontop + height - mTextView.getHeight() - (int) (2 * scale + 0.5f); 584 } 585 586 void createInputContentTypeIfNeeded() { 587 if (mInputContentType == null) { 588 mInputContentType = new InputContentType(); 589 } 590 } 591 592 void createInputMethodStateIfNeeded() { 593 if (mInputMethodState == null) { 594 mInputMethodState = new InputMethodState(); 595 } 596 } 597 598 boolean isCursorVisible() { 599 // The default value is true, even when there is no associated Editor 600 return mCursorVisible && mTextView.isTextEditable(); 601 } 602 603 void prepareCursorControllers() { 604 boolean windowSupportsHandles = false; 605 606 ViewGroup.LayoutParams params = mTextView.getRootView().getLayoutParams(); 607 if (params instanceof WindowManager.LayoutParams) { 608 WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params; 609 windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW 610 || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW; 611 } 612 613 boolean enabled = windowSupportsHandles && mTextView.getLayout() != null; 614 mInsertionControllerEnabled = enabled && isCursorVisible(); 615 mSelectionControllerEnabled = enabled && mTextView.textCanBeSelected(); 616 617 if (!mInsertionControllerEnabled) { 618 hideInsertionPointCursorController(); 619 if (mInsertionPointCursorController != null) { 620 mInsertionPointCursorController.onDetached(); 621 mInsertionPointCursorController = null; 622 } 623 } 624 625 if (!mSelectionControllerEnabled) { 626 stopTextActionMode(); 627 if (mSelectionModifierCursorController != null) { 628 mSelectionModifierCursorController.onDetached(); 629 mSelectionModifierCursorController = null; 630 } 631 } 632 } 633 634 void hideInsertionPointCursorController() { 635 if (mInsertionPointCursorController != null) { 636 mInsertionPointCursorController.hide(); 637 } 638 } 639 640 /** 641 * Hides the insertion and span controllers. 642 */ 643 void hideCursorAndSpanControllers() { 644 hideCursorControllers(); 645 hideSpanControllers(); 646 } 647 648 private void hideSpanControllers() { 649 if (mSpanController != null) { 650 mSpanController.hide(); 651 } 652 } 653 654 private void hideCursorControllers() { 655 // When mTextView is not ExtractEditText, we need to distinguish two kinds of focus-lost. 656 // One is the true focus lost where suggestions pop-up (if any) should be dismissed, and the 657 // other is an side effect of showing the suggestions pop-up itself. We use isShowingUp() 658 // to distinguish one from the other. 659 if (mSuggestionsPopupWindow != null && ((mTextView.isInExtractedMode()) || 660 !mSuggestionsPopupWindow.isShowingUp())) { 661 // Should be done before hide insertion point controller since it triggers a show of it 662 mSuggestionsPopupWindow.hide(); 663 } 664 hideInsertionPointCursorController(); 665 } 666 667 /** 668 * Create new SpellCheckSpans on the modified region. 669 */ 670 private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) { 671 // Remove spans whose adjacent characters are text not punctuation 672 mTextView.removeAdjacentSuggestionSpans(start); 673 mTextView.removeAdjacentSuggestionSpans(end); 674 675 if (mTextView.isTextEditable() && mTextView.isSuggestionsEnabled() && 676 !(mTextView.isInExtractedMode())) { 677 if (mSpellChecker == null && createSpellChecker) { 678 mSpellChecker = new SpellChecker(mTextView); 679 } 680 if (mSpellChecker != null) { 681 mSpellChecker.spellCheck(start, end); 682 } 683 } 684 } 685 686 void onScreenStateChanged(int screenState) { 687 switch (screenState) { 688 case View.SCREEN_STATE_ON: 689 resumeBlink(); 690 break; 691 case View.SCREEN_STATE_OFF: 692 suspendBlink(); 693 break; 694 } 695 } 696 697 private void suspendBlink() { 698 if (mBlink != null) { 699 mBlink.cancel(); 700 } 701 } 702 703 private void resumeBlink() { 704 if (mBlink != null) { 705 mBlink.uncancel(); 706 makeBlink(); 707 } 708 } 709 710 void adjustInputType(boolean password, boolean passwordInputType, 711 boolean webPasswordInputType, boolean numberPasswordInputType) { 712 // mInputType has been set from inputType, possibly modified by mInputMethod. 713 // Specialize mInputType to [web]password if we have a text class and the original input 714 // type was a password. 715 if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 716 if (password || passwordInputType) { 717 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 718 | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD; 719 } 720 if (webPasswordInputType) { 721 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 722 | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 723 } 724 } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) { 725 if (numberPasswordInputType) { 726 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 727 | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD; 728 } 729 } 730 } 731 732 private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) { 733 int wid = tv.getPaddingLeft() + tv.getPaddingRight(); 734 int ht = tv.getPaddingTop() + tv.getPaddingBottom(); 735 736 int defaultWidthInPixels = mTextView.getResources().getDimensionPixelSize( 737 com.android.internal.R.dimen.textview_error_popup_default_width); 738 Layout l = new StaticLayout(text, tv.getPaint(), defaultWidthInPixels, 739 Layout.Alignment.ALIGN_NORMAL, 1, 0, true); 740 float max = 0; 741 for (int i = 0; i < l.getLineCount(); i++) { 742 max = Math.max(max, l.getLineWidth(i)); 743 } 744 745 /* 746 * Now set the popup size to be big enough for the text plus the border capped 747 * to DEFAULT_MAX_POPUP_WIDTH 748 */ 749 pop.setWidth(wid + (int) Math.ceil(max)); 750 pop.setHeight(ht + l.getHeight()); 751 } 752 753 void setFrame() { 754 if (mErrorPopup != null) { 755 TextView tv = (TextView) mErrorPopup.getContentView(); 756 chooseSize(mErrorPopup, mError, tv); 757 mErrorPopup.update(mTextView, getErrorX(), getErrorY(), 758 mErrorPopup.getWidth(), mErrorPopup.getHeight()); 759 } 760 } 761 762 private int getWordStart(int offset) { 763 // FIXME - For this and similar methods we're not doing anything to check if there's 764 // a LocaleSpan in the text, this may be something we should try handling or checking for. 765 int retOffset = getWordIteratorWithText().prevBoundary(offset); 766 if (getWordIteratorWithText().isOnPunctuation(retOffset)) { 767 // On punctuation boundary or within group of punctuation, find punctuation start. 768 retOffset = getWordIteratorWithText().getPunctuationBeginning(offset); 769 } else { 770 // Not on a punctuation boundary, find the word start. 771 retOffset = getWordIteratorWithText().getPrevWordBeginningOnTwoWordsBoundary(offset); 772 } 773 if (retOffset == BreakIterator.DONE) { 774 return offset; 775 } 776 return retOffset; 777 } 778 779 private int getWordEnd(int offset) { 780 int retOffset = getWordIteratorWithText().nextBoundary(offset); 781 if (getWordIteratorWithText().isAfterPunctuation(retOffset)) { 782 // On punctuation boundary or within group of punctuation, find punctuation end. 783 retOffset = getWordIteratorWithText().getPunctuationEnd(offset); 784 } else { 785 // Not on a punctuation boundary, find the word end. 786 retOffset = getWordIteratorWithText().getNextWordEndOnTwoWordBoundary(offset); 787 } 788 if (retOffset == BreakIterator.DONE) { 789 return offset; 790 } 791 return retOffset; 792 } 793 794 private boolean needsToSelectAllToSelectWordOrParagraph() { 795 if (mTextView.hasPasswordTransformationMethod()) { 796 // Always select all on a password field. 797 // Cut/copy menu entries are not available for passwords, but being able to select all 798 // is however useful to delete or paste to replace the entire content. 799 return true; 800 } 801 802 int inputType = mTextView.getInputType(); 803 int klass = inputType & InputType.TYPE_MASK_CLASS; 804 int variation = inputType & InputType.TYPE_MASK_VARIATION; 805 806 // Specific text field types: select the entire text for these 807 if (klass == InputType.TYPE_CLASS_NUMBER || 808 klass == InputType.TYPE_CLASS_PHONE || 809 klass == InputType.TYPE_CLASS_DATETIME || 810 variation == InputType.TYPE_TEXT_VARIATION_URI || 811 variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS || 812 variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS || 813 variation == InputType.TYPE_TEXT_VARIATION_FILTER) { 814 return true; 815 } 816 return false; 817 } 818 819 /** 820 * Adjusts selection to the word under last touch offset. Return true if the operation was 821 * successfully performed. 822 */ 823 private boolean selectCurrentWord() { 824 if (!mTextView.canSelectText()) { 825 return false; 826 } 827 828 if (needsToSelectAllToSelectWordOrParagraph()) { 829 return mTextView.selectAllText(); 830 } 831 832 long lastTouchOffsets = getLastTouchOffsets(); 833 final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 834 final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 835 836 // Safety check in case standard touch event handling has been bypassed 837 if (minOffset < 0 || minOffset > mTextView.getText().length()) return false; 838 if (maxOffset < 0 || maxOffset > mTextView.getText().length()) return false; 839 840 int selectionStart, selectionEnd; 841 842 // If a URLSpan (web address, email, phone...) is found at that position, select it. 843 URLSpan[] urlSpans = ((Spanned) mTextView.getText()). 844 getSpans(minOffset, maxOffset, URLSpan.class); 845 if (urlSpans.length >= 1) { 846 URLSpan urlSpan = urlSpans[0]; 847 selectionStart = ((Spanned) mTextView.getText()).getSpanStart(urlSpan); 848 selectionEnd = ((Spanned) mTextView.getText()).getSpanEnd(urlSpan); 849 } else { 850 // FIXME - We should check if there's a LocaleSpan in the text, this may be 851 // something we should try handling or checking for. 852 final WordIterator wordIterator = getWordIterator(); 853 wordIterator.setCharSequence(mTextView.getText(), minOffset, maxOffset); 854 855 selectionStart = wordIterator.getBeginning(minOffset); 856 selectionEnd = wordIterator.getEnd(maxOffset); 857 858 if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE || 859 selectionStart == selectionEnd) { 860 // Possible when the word iterator does not properly handle the text's language 861 long range = getCharClusterRange(minOffset); 862 selectionStart = TextUtils.unpackRangeStartFromLong(range); 863 selectionEnd = TextUtils.unpackRangeEndFromLong(range); 864 } 865 } 866 867 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 868 return selectionEnd > selectionStart; 869 } 870 871 /** 872 * Adjusts selection to the paragraph under last touch offset. Return true if the operation was 873 * successfully performed. 874 */ 875 private boolean selectCurrentParagraph() { 876 if (!mTextView.canSelectText()) { 877 return false; 878 } 879 880 if (needsToSelectAllToSelectWordOrParagraph()) { 881 return mTextView.selectAllText(); 882 } 883 884 long lastTouchOffsets = getLastTouchOffsets(); 885 final int minLastTouchOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 886 final int maxLastTouchOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 887 888 final long paragraphsRange = getParagraphsRange(minLastTouchOffset, maxLastTouchOffset); 889 final int start = TextUtils.unpackRangeStartFromLong(paragraphsRange); 890 final int end = TextUtils.unpackRangeEndFromLong(paragraphsRange); 891 if (start < end) { 892 Selection.setSelection((Spannable) mTextView.getText(), start, end); 893 return true; 894 } 895 return false; 896 } 897 898 /** 899 * Get the minimum range of paragraphs that contains startOffset and endOffset. 900 */ 901 private long getParagraphsRange(int startOffset, int endOffset) { 902 final Layout layout = mTextView.getLayout(); 903 if (layout == null) { 904 return TextUtils.packRangeInLong(-1, -1); 905 } 906 final CharSequence text = mTextView.getText(); 907 int minLine = layout.getLineForOffset(startOffset); 908 // Search paragraph start. 909 while (minLine > 0) { 910 final int prevLineEndOffset = layout.getLineEnd(minLine - 1); 911 if (text.charAt(prevLineEndOffset - 1) == '\n') { 912 break; 913 } 914 minLine--; 915 } 916 int maxLine = layout.getLineForOffset(endOffset); 917 // Search paragraph end. 918 while (maxLine < layout.getLineCount() - 1) { 919 final int lineEndOffset = layout.getLineEnd(maxLine); 920 if (text.charAt(lineEndOffset - 1) == '\n') { 921 break; 922 } 923 maxLine++; 924 } 925 return TextUtils.packRangeInLong(layout.getLineStart(minLine), layout.getLineEnd(maxLine)); 926 } 927 928 void onLocaleChanged() { 929 // Will be re-created on demand in getWordIterator and getWordIteratorWithText with the 930 // proper new locale 931 mWordIterator = null; 932 mWordIteratorWithText = null; 933 } 934 935 /** 936 * @hide 937 */ 938 public WordIterator getWordIterator() { 939 if (mWordIterator == null) { 940 mWordIterator = new WordIterator(mTextView.getTextServicesLocale()); 941 } 942 return mWordIterator; 943 } 944 945 private WordIterator getWordIteratorWithText() { 946 if (mWordIteratorWithText == null) { 947 mWordIteratorWithText = new WordIterator(mTextView.getTextServicesLocale()); 948 mUpdateWordIteratorText = true; 949 } 950 if (mUpdateWordIteratorText) { 951 // FIXME - Shouldn't copy all of the text as only the area of the text relevant 952 // to the user's selection is needed. A possible solution would be to 953 // copy some number N of characters near the selection and then when the 954 // user approaches N then we'd do another copy of the next N characters. 955 CharSequence text = mTextView.getText(); 956 mWordIteratorWithText.setCharSequence(text, 0, text.length()); 957 mUpdateWordIteratorText = false; 958 } 959 return mWordIteratorWithText; 960 } 961 962 private int getNextCursorOffset(int offset, boolean findAfterGivenOffset) { 963 final Layout layout = mTextView.getLayout(); 964 if (layout == null) return offset; 965 return findAfterGivenOffset == layout.isRtlCharAt(offset) ? 966 layout.getOffsetToLeftOf(offset) : layout.getOffsetToRightOf(offset); 967 } 968 969 private long getCharClusterRange(int offset) { 970 final int textLength = mTextView.getText().length(); 971 if (offset < textLength) { 972 final int clusterEndOffset = getNextCursorOffset(offset, true); 973 return TextUtils.packRangeInLong( 974 getNextCursorOffset(clusterEndOffset, false), clusterEndOffset); 975 } 976 if (offset - 1 >= 0) { 977 final int clusterStartOffset = getNextCursorOffset(offset, false); 978 return TextUtils.packRangeInLong(clusterStartOffset, 979 getNextCursorOffset(clusterStartOffset, true)); 980 } 981 return TextUtils.packRangeInLong(offset, offset); 982 } 983 984 private boolean touchPositionIsInSelection() { 985 int selectionStart = mTextView.getSelectionStart(); 986 int selectionEnd = mTextView.getSelectionEnd(); 987 988 if (selectionStart == selectionEnd) { 989 return false; 990 } 991 992 if (selectionStart > selectionEnd) { 993 int tmp = selectionStart; 994 selectionStart = selectionEnd; 995 selectionEnd = tmp; 996 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 997 } 998 999 SelectionModifierCursorController selectionController = getSelectionController(); 1000 int minOffset = selectionController.getMinTouchOffset(); 1001 int maxOffset = selectionController.getMaxTouchOffset(); 1002 1003 return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); 1004 } 1005 1006 private PositionListener getPositionListener() { 1007 if (mPositionListener == null) { 1008 mPositionListener = new PositionListener(); 1009 } 1010 return mPositionListener; 1011 } 1012 1013 private interface TextViewPositionListener { 1014 public void updatePosition(int parentPositionX, int parentPositionY, 1015 boolean parentPositionChanged, boolean parentScrolled); 1016 } 1017 1018 private boolean isPositionVisible(final float positionX, final float positionY) { 1019 synchronized (TEMP_POSITION) { 1020 final float[] position = TEMP_POSITION; 1021 position[0] = positionX; 1022 position[1] = positionY; 1023 View view = mTextView; 1024 1025 while (view != null) { 1026 if (view != mTextView) { 1027 // Local scroll is already taken into account in positionX/Y 1028 position[0] -= view.getScrollX(); 1029 position[1] -= view.getScrollY(); 1030 } 1031 1032 if (position[0] < 0 || position[1] < 0 || 1033 position[0] > view.getWidth() || position[1] > view.getHeight()) { 1034 return false; 1035 } 1036 1037 if (!view.getMatrix().isIdentity()) { 1038 view.getMatrix().mapPoints(position); 1039 } 1040 1041 position[0] += view.getLeft(); 1042 position[1] += view.getTop(); 1043 1044 final ViewParent parent = view.getParent(); 1045 if (parent instanceof View) { 1046 view = (View) parent; 1047 } else { 1048 // We've reached the ViewRoot, stop iterating 1049 view = null; 1050 } 1051 } 1052 } 1053 1054 // We've been able to walk up the view hierarchy and the position was never clipped 1055 return true; 1056 } 1057 1058 private boolean isOffsetVisible(int offset) { 1059 Layout layout = mTextView.getLayout(); 1060 if (layout == null) return false; 1061 1062 final int line = layout.getLineForOffset(offset); 1063 final int lineBottom = layout.getLineBottom(line); 1064 final int primaryHorizontal = (int) layout.getPrimaryHorizontal(offset); 1065 return isPositionVisible(primaryHorizontal + mTextView.viewportToContentHorizontalOffset(), 1066 lineBottom + mTextView.viewportToContentVerticalOffset()); 1067 } 1068 1069 /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed 1070 * in the view. Returns false when the position is in the empty space of left/right of text. 1071 */ 1072 private boolean isPositionOnText(float x, float y) { 1073 Layout layout = mTextView.getLayout(); 1074 if (layout == null) return false; 1075 1076 final int line = mTextView.getLineAtCoordinate(y); 1077 x = mTextView.convertToLocalHorizontalCoordinate(x); 1078 1079 if (x < layout.getLineLeft(line)) return false; 1080 if (x > layout.getLineRight(line)) return false; 1081 return true; 1082 } 1083 1084 private void startDragAndDrop() { 1085 final int start = mTextView.getSelectionStart(); 1086 final int end = mTextView.getSelectionEnd(); 1087 CharSequence selectedText = mTextView.getTransformedText(start, end); 1088 ClipData data = ClipData.newPlainText(null, selectedText); 1089 DragLocalState localState = new DragLocalState(mTextView, start, end); 1090 mTextView.startDragAndDrop(data, getTextThumbnailBuilder(start, end), localState, 1091 View.DRAG_FLAG_GLOBAL); 1092 stopTextActionMode(); 1093 if (hasSelectionController()) { 1094 getSelectionController().resetTouchOffsets(); 1095 } 1096 } 1097 1098 public boolean performLongClick(boolean handled) { 1099 // Long press in empty space moves cursor and starts the insertion action mode. 1100 if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) && 1101 mInsertionControllerEnabled) { 1102 final int offset = mTextView.getOffsetForPosition(mLastDownPositionX, 1103 mLastDownPositionY); 1104 Selection.setSelection((Spannable) mTextView.getText(), offset); 1105 getInsertionController().show(); 1106 mIsInsertionActionModeStartPending = true; 1107 handled = true; 1108 } 1109 1110 if (!handled && mTextActionMode != null) { 1111 if (touchPositionIsInSelection()) { 1112 startDragAndDrop(); 1113 } else { 1114 stopTextActionMode(); 1115 selectCurrentWordAndStartDrag(); 1116 } 1117 handled = true; 1118 } 1119 1120 // Start a new selection 1121 if (!handled) { 1122 handled = selectCurrentWordAndStartDrag(); 1123 } 1124 1125 return handled; 1126 } 1127 1128 private long getLastTouchOffsets() { 1129 SelectionModifierCursorController selectionController = getSelectionController(); 1130 final int minOffset = selectionController.getMinTouchOffset(); 1131 final int maxOffset = selectionController.getMaxTouchOffset(); 1132 return TextUtils.packRangeInLong(minOffset, maxOffset); 1133 } 1134 1135 void onFocusChanged(boolean focused, int direction) { 1136 mShowCursor = SystemClock.uptimeMillis(); 1137 ensureEndedBatchEdit(); 1138 1139 if (focused) { 1140 int selStart = mTextView.getSelectionStart(); 1141 int selEnd = mTextView.getSelectionEnd(); 1142 1143 // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection 1144 // mode for these, unless there was a specific selection already started. 1145 final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 && 1146 selEnd == mTextView.getText().length(); 1147 1148 mCreatedWithASelection = mFrozenWithFocus && mTextView.hasSelection() && 1149 !isFocusHighlighted; 1150 1151 if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { 1152 // If a tap was used to give focus to that view, move cursor at tap position. 1153 // Has to be done before onTakeFocus, which can be overloaded. 1154 final int lastTapPosition = getLastTapPosition(); 1155 if (lastTapPosition >= 0) { 1156 Selection.setSelection((Spannable) mTextView.getText(), lastTapPosition); 1157 } 1158 1159 // Note this may have to be moved out of the Editor class 1160 MovementMethod mMovement = mTextView.getMovementMethod(); 1161 if (mMovement != null) { 1162 mMovement.onTakeFocus(mTextView, (Spannable) mTextView.getText(), direction); 1163 } 1164 1165 // The DecorView does not have focus when the 'Done' ExtractEditText button is 1166 // pressed. Since it is the ViewAncestor's mView, it requests focus before 1167 // ExtractEditText clears focus, which gives focus to the ExtractEditText. 1168 // This special case ensure that we keep current selection in that case. 1169 // It would be better to know why the DecorView does not have focus at that time. 1170 if (((mTextView.isInExtractedMode()) || mSelectionMoved) && 1171 selStart >= 0 && selEnd >= 0) { 1172 /* 1173 * Someone intentionally set the selection, so let them 1174 * do whatever it is that they wanted to do instead of 1175 * the default on-focus behavior. We reset the selection 1176 * here instead of just skipping the onTakeFocus() call 1177 * because some movement methods do something other than 1178 * just setting the selection in theirs and we still 1179 * need to go through that path. 1180 */ 1181 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 1182 } 1183 1184 if (mSelectAllOnFocus) { 1185 mTextView.selectAllText(); 1186 } 1187 1188 mTouchFocusSelected = true; 1189 } 1190 1191 mFrozenWithFocus = false; 1192 mSelectionMoved = false; 1193 1194 if (mError != null) { 1195 showError(); 1196 } 1197 1198 makeBlink(); 1199 } else { 1200 if (mError != null) { 1201 hideError(); 1202 } 1203 // Don't leave us in the middle of a batch edit. 1204 mTextView.onEndBatchEdit(); 1205 1206 if (mTextView.isInExtractedMode()) { 1207 hideCursorAndSpanControllers(); 1208 stopTextActionModeWithPreservingSelection(); 1209 } else { 1210 hideCursorAndSpanControllers(); 1211 if (mTemporaryDetach) { 1212 stopTextActionModeWithPreservingSelection(); 1213 } else { 1214 stopTextActionMode(); 1215 } 1216 downgradeEasyCorrectionSpans(); 1217 } 1218 // No need to create the controller 1219 if (mSelectionModifierCursorController != null) { 1220 mSelectionModifierCursorController.resetTouchOffsets(); 1221 } 1222 } 1223 } 1224 1225 /** 1226 * Downgrades to simple suggestions all the easy correction spans that are not a spell check 1227 * span. 1228 */ 1229 private void downgradeEasyCorrectionSpans() { 1230 CharSequence text = mTextView.getText(); 1231 if (text instanceof Spannable) { 1232 Spannable spannable = (Spannable) text; 1233 SuggestionSpan[] suggestionSpans = spannable.getSpans(0, 1234 spannable.length(), SuggestionSpan.class); 1235 for (int i = 0; i < suggestionSpans.length; i++) { 1236 int flags = suggestionSpans[i].getFlags(); 1237 if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0 1238 && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) { 1239 flags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 1240 suggestionSpans[i].setFlags(flags); 1241 } 1242 } 1243 } 1244 } 1245 1246 void sendOnTextChanged(int start, int after) { 1247 updateSpellCheckSpans(start, start + after, false); 1248 1249 // Flip flag to indicate the word iterator needs to have the text reset. 1250 mUpdateWordIteratorText = true; 1251 1252 // Hide the controllers as soon as text is modified (typing, procedural...) 1253 // We do not hide the span controllers, since they can be added when a new text is 1254 // inserted into the text view (voice IME). 1255 hideCursorControllers(); 1256 // Reset drag accelerator. 1257 if (mSelectionModifierCursorController != null) { 1258 mSelectionModifierCursorController.resetTouchOffsets(); 1259 } 1260 stopTextActionMode(); 1261 } 1262 1263 private int getLastTapPosition() { 1264 // No need to create the controller at that point, no last tap position saved 1265 if (mSelectionModifierCursorController != null) { 1266 int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); 1267 if (lastTapPosition >= 0) { 1268 // Safety check, should not be possible. 1269 if (lastTapPosition > mTextView.getText().length()) { 1270 lastTapPosition = mTextView.getText().length(); 1271 } 1272 return lastTapPosition; 1273 } 1274 } 1275 1276 return -1; 1277 } 1278 1279 void onWindowFocusChanged(boolean hasWindowFocus) { 1280 if (hasWindowFocus) { 1281 if (mBlink != null) { 1282 mBlink.uncancel(); 1283 makeBlink(); 1284 } 1285 final InputMethodManager imm = InputMethodManager.peekInstance(); 1286 if (mTextView.hasSelection() && !extractedTextModeWillBeStarted()) { 1287 startSelectionActionMode(); 1288 } 1289 } else { 1290 if (mBlink != null) { 1291 mBlink.cancel(); 1292 } 1293 if (mInputContentType != null) { 1294 mInputContentType.enterDown = false; 1295 } 1296 // Order matters! Must be done before onParentLostFocus to rely on isShowingUp 1297 hideCursorAndSpanControllers(); 1298 stopTextActionModeWithPreservingSelection(); 1299 if (mSuggestionsPopupWindow != null) { 1300 mSuggestionsPopupWindow.onParentLostFocus(); 1301 } 1302 1303 // Don't leave us in the middle of a batch edit. Same as in onFocusChanged 1304 ensureEndedBatchEdit(); 1305 } 1306 } 1307 1308 private void updateTapState(MotionEvent event) { 1309 final int action = event.getActionMasked(); 1310 if (action == MotionEvent.ACTION_DOWN) { 1311 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 1312 // Detect double tap and triple click. 1313 if (((mTapState == TAP_STATE_FIRST_TAP) 1314 || ((mTapState == TAP_STATE_DOUBLE_TAP) && isMouse)) 1315 && (SystemClock.uptimeMillis() - mLastTouchUpTime) <= 1316 ViewConfiguration.getDoubleTapTimeout()) { 1317 if (mTapState == TAP_STATE_FIRST_TAP) { 1318 mTapState = TAP_STATE_DOUBLE_TAP; 1319 } else { 1320 mTapState = TAP_STATE_TRIPLE_CLICK; 1321 } 1322 } else { 1323 mTapState = TAP_STATE_FIRST_TAP; 1324 } 1325 } 1326 if (action == MotionEvent.ACTION_UP) { 1327 mLastTouchUpTime = SystemClock.uptimeMillis(); 1328 } 1329 } 1330 1331 private boolean shouldFilterOutTouchEvent(MotionEvent event) { 1332 if (!event.isFromSource(InputDevice.SOURCE_MOUSE)) { 1333 return false; 1334 } 1335 final boolean primaryButtonStateChanged = 1336 ((mLastButtonState ^ event.getButtonState()) & MotionEvent.BUTTON_PRIMARY) != 0; 1337 final int action = event.getActionMasked(); 1338 if ((action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_UP) 1339 && !primaryButtonStateChanged) { 1340 return true; 1341 } 1342 if (action == MotionEvent.ACTION_MOVE 1343 && !event.isButtonPressed(MotionEvent.BUTTON_PRIMARY)) { 1344 return true; 1345 } 1346 return false; 1347 } 1348 1349 void onTouchEvent(MotionEvent event) { 1350 final boolean filterOutEvent = shouldFilterOutTouchEvent(event); 1351 mLastButtonState = event.getButtonState(); 1352 if (filterOutEvent) { 1353 if (event.getActionMasked() == MotionEvent.ACTION_UP) { 1354 mDiscardNextActionUp = true; 1355 } 1356 return; 1357 } 1358 updateTapState(event); 1359 updateFloatingToolbarVisibility(event); 1360 1361 if (hasSelectionController()) { 1362 getSelectionController().onTouchEvent(event); 1363 } 1364 1365 if (mShowSuggestionRunnable != null) { 1366 mTextView.removeCallbacks(mShowSuggestionRunnable); 1367 mShowSuggestionRunnable = null; 1368 } 1369 1370 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 1371 mLastDownPositionX = event.getX(); 1372 mLastDownPositionY = event.getY(); 1373 1374 // Reset this state; it will be re-set if super.onTouchEvent 1375 // causes focus to move to the view. 1376 mTouchFocusSelected = false; 1377 mIgnoreActionUpEvent = false; 1378 } 1379 } 1380 1381 private void updateFloatingToolbarVisibility(MotionEvent event) { 1382 if (mTextActionMode != null) { 1383 switch (event.getActionMasked()) { 1384 case MotionEvent.ACTION_MOVE: 1385 hideFloatingToolbar(); 1386 break; 1387 case MotionEvent.ACTION_UP: // fall through 1388 case MotionEvent.ACTION_CANCEL: 1389 showFloatingToolbar(); 1390 } 1391 } 1392 } 1393 1394 private void hideFloatingToolbar() { 1395 if (mTextActionMode != null) { 1396 mTextView.removeCallbacks(mShowFloatingToolbar); 1397 mTextActionMode.hide(ActionMode.DEFAULT_HIDE_DURATION); 1398 } 1399 } 1400 1401 private void showFloatingToolbar() { 1402 if (mTextActionMode != null) { 1403 // Delay "show" so it doesn't interfere with click confirmations 1404 // or double-clicks that could "dismiss" the floating toolbar. 1405 int delay = ViewConfiguration.getDoubleTapTimeout(); 1406 mTextView.postDelayed(mShowFloatingToolbar, delay); 1407 } 1408 } 1409 1410 public void beginBatchEdit() { 1411 mInBatchEditControllers = true; 1412 final InputMethodState ims = mInputMethodState; 1413 if (ims != null) { 1414 int nesting = ++ims.mBatchEditNesting; 1415 if (nesting == 1) { 1416 ims.mCursorChanged = false; 1417 ims.mChangedDelta = 0; 1418 if (ims.mContentChanged) { 1419 // We already have a pending change from somewhere else, 1420 // so turn this into a full update. 1421 ims.mChangedStart = 0; 1422 ims.mChangedEnd = mTextView.getText().length(); 1423 } else { 1424 ims.mChangedStart = EXTRACT_UNKNOWN; 1425 ims.mChangedEnd = EXTRACT_UNKNOWN; 1426 ims.mContentChanged = false; 1427 } 1428 mUndoInputFilter.beginBatchEdit(); 1429 mTextView.onBeginBatchEdit(); 1430 } 1431 } 1432 } 1433 1434 public void endBatchEdit() { 1435 mInBatchEditControllers = false; 1436 final InputMethodState ims = mInputMethodState; 1437 if (ims != null) { 1438 int nesting = --ims.mBatchEditNesting; 1439 if (nesting == 0) { 1440 finishBatchEdit(ims); 1441 } 1442 } 1443 } 1444 1445 void ensureEndedBatchEdit() { 1446 final InputMethodState ims = mInputMethodState; 1447 if (ims != null && ims.mBatchEditNesting != 0) { 1448 ims.mBatchEditNesting = 0; 1449 finishBatchEdit(ims); 1450 } 1451 } 1452 1453 void finishBatchEdit(final InputMethodState ims) { 1454 mTextView.onEndBatchEdit(); 1455 mUndoInputFilter.endBatchEdit(); 1456 1457 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1458 mTextView.updateAfterEdit(); 1459 reportExtractedText(); 1460 } else if (ims.mCursorChanged) { 1461 // Cheesy way to get us to report the current cursor location. 1462 mTextView.invalidateCursor(); 1463 } 1464 // sendUpdateSelection knows to avoid sending if the selection did 1465 // not actually change. 1466 sendUpdateSelection(); 1467 } 1468 1469 static final int EXTRACT_NOTHING = -2; 1470 static final int EXTRACT_UNKNOWN = -1; 1471 1472 boolean extractText(ExtractedTextRequest request, ExtractedText outText) { 1473 return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, 1474 EXTRACT_UNKNOWN, outText); 1475 } 1476 1477 private boolean extractTextInternal(@Nullable ExtractedTextRequest request, 1478 int partialStartOffset, int partialEndOffset, int delta, 1479 @Nullable ExtractedText outText) { 1480 if (request == null || outText == null) { 1481 return false; 1482 } 1483 1484 final CharSequence content = mTextView.getText(); 1485 if (content == null) { 1486 return false; 1487 } 1488 1489 if (partialStartOffset != EXTRACT_NOTHING) { 1490 final int N = content.length(); 1491 if (partialStartOffset < 0) { 1492 outText.partialStartOffset = outText.partialEndOffset = -1; 1493 partialStartOffset = 0; 1494 partialEndOffset = N; 1495 } else { 1496 // Now use the delta to determine the actual amount of text 1497 // we need. 1498 partialEndOffset += delta; 1499 // Adjust offsets to ensure we contain full spans. 1500 if (content instanceof Spanned) { 1501 Spanned spanned = (Spanned)content; 1502 Object[] spans = spanned.getSpans(partialStartOffset, 1503 partialEndOffset, ParcelableSpan.class); 1504 int i = spans.length; 1505 while (i > 0) { 1506 i--; 1507 int j = spanned.getSpanStart(spans[i]); 1508 if (j < partialStartOffset) partialStartOffset = j; 1509 j = spanned.getSpanEnd(spans[i]); 1510 if (j > partialEndOffset) partialEndOffset = j; 1511 } 1512 } 1513 outText.partialStartOffset = partialStartOffset; 1514 outText.partialEndOffset = partialEndOffset - delta; 1515 1516 if (partialStartOffset > N) { 1517 partialStartOffset = N; 1518 } else if (partialStartOffset < 0) { 1519 partialStartOffset = 0; 1520 } 1521 if (partialEndOffset > N) { 1522 partialEndOffset = N; 1523 } else if (partialEndOffset < 0) { 1524 partialEndOffset = 0; 1525 } 1526 } 1527 if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) { 1528 outText.text = content.subSequence(partialStartOffset, 1529 partialEndOffset); 1530 } else { 1531 outText.text = TextUtils.substring(content, partialStartOffset, 1532 partialEndOffset); 1533 } 1534 } else { 1535 outText.partialStartOffset = 0; 1536 outText.partialEndOffset = 0; 1537 outText.text = ""; 1538 } 1539 outText.flags = 0; 1540 if (MetaKeyKeyListener.getMetaState(content, MetaKeyKeyListener.META_SELECTING) != 0) { 1541 outText.flags |= ExtractedText.FLAG_SELECTING; 1542 } 1543 if (mTextView.isSingleLine()) { 1544 outText.flags |= ExtractedText.FLAG_SINGLE_LINE; 1545 } 1546 outText.startOffset = 0; 1547 outText.selectionStart = mTextView.getSelectionStart(); 1548 outText.selectionEnd = mTextView.getSelectionEnd(); 1549 return true; 1550 } 1551 1552 boolean reportExtractedText() { 1553 final Editor.InputMethodState ims = mInputMethodState; 1554 if (ims != null) { 1555 final boolean contentChanged = ims.mContentChanged; 1556 if (contentChanged || ims.mSelectionModeChanged) { 1557 ims.mContentChanged = false; 1558 ims.mSelectionModeChanged = false; 1559 final ExtractedTextRequest req = ims.mExtractedTextRequest; 1560 if (req != null) { 1561 InputMethodManager imm = InputMethodManager.peekInstance(); 1562 if (imm != null) { 1563 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1564 "Retrieving extracted start=" + ims.mChangedStart + 1565 " end=" + ims.mChangedEnd + 1566 " delta=" + ims.mChangedDelta); 1567 if (ims.mChangedStart < 0 && !contentChanged) { 1568 ims.mChangedStart = EXTRACT_NOTHING; 1569 } 1570 if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, 1571 ims.mChangedDelta, ims.mExtractedText)) { 1572 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1573 "Reporting extracted start=" + 1574 ims.mExtractedText.partialStartOffset + 1575 " end=" + ims.mExtractedText.partialEndOffset + 1576 ": " + ims.mExtractedText.text); 1577 1578 imm.updateExtractedText(mTextView, req.token, ims.mExtractedText); 1579 ims.mChangedStart = EXTRACT_UNKNOWN; 1580 ims.mChangedEnd = EXTRACT_UNKNOWN; 1581 ims.mChangedDelta = 0; 1582 ims.mContentChanged = false; 1583 return true; 1584 } 1585 } 1586 } 1587 } 1588 } 1589 return false; 1590 } 1591 1592 private void sendUpdateSelection() { 1593 if (null != mInputMethodState && mInputMethodState.mBatchEditNesting <= 0) { 1594 final InputMethodManager imm = InputMethodManager.peekInstance(); 1595 if (null != imm) { 1596 final int selectionStart = mTextView.getSelectionStart(); 1597 final int selectionEnd = mTextView.getSelectionEnd(); 1598 int candStart = -1; 1599 int candEnd = -1; 1600 if (mTextView.getText() instanceof Spannable) { 1601 final Spannable sp = (Spannable) mTextView.getText(); 1602 candStart = EditableInputConnection.getComposingSpanStart(sp); 1603 candEnd = EditableInputConnection.getComposingSpanEnd(sp); 1604 } 1605 // InputMethodManager#updateSelection skips sending the message if 1606 // none of the parameters have changed since the last time we called it. 1607 imm.updateSelection(mTextView, 1608 selectionStart, selectionEnd, candStart, candEnd); 1609 } 1610 } 1611 } 1612 1613 void onDraw(Canvas canvas, Layout layout, Path highlight, Paint highlightPaint, 1614 int cursorOffsetVertical) { 1615 final int selectionStart = mTextView.getSelectionStart(); 1616 final int selectionEnd = mTextView.getSelectionEnd(); 1617 1618 final InputMethodState ims = mInputMethodState; 1619 if (ims != null && ims.mBatchEditNesting == 0) { 1620 InputMethodManager imm = InputMethodManager.peekInstance(); 1621 if (imm != null) { 1622 if (imm.isActive(mTextView)) { 1623 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1624 // We are in extract mode and the content has changed 1625 // in some way... just report complete new text to the 1626 // input method. 1627 reportExtractedText(); 1628 } 1629 } 1630 } 1631 } 1632 1633 if (mCorrectionHighlighter != null) { 1634 mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); 1635 } 1636 1637 if (highlight != null && selectionStart == selectionEnd && mCursorCount > 0) { 1638 drawCursor(canvas, cursorOffsetVertical); 1639 // Rely on the drawable entirely, do not draw the cursor line. 1640 // Has to be done after the IMM related code above which relies on the highlight. 1641 highlight = null; 1642 } 1643 1644 if (mTextView.canHaveDisplayList() && canvas.isHardwareAccelerated()) { 1645 drawHardwareAccelerated(canvas, layout, highlight, highlightPaint, 1646 cursorOffsetVertical); 1647 } else { 1648 layout.draw(canvas, highlight, highlightPaint, cursorOffsetVertical); 1649 } 1650 } 1651 1652 private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight, 1653 Paint highlightPaint, int cursorOffsetVertical) { 1654 final long lineRange = layout.getLineRangeForDraw(canvas); 1655 int firstLine = TextUtils.unpackRangeStartFromLong(lineRange); 1656 int lastLine = TextUtils.unpackRangeEndFromLong(lineRange); 1657 if (lastLine < 0) return; 1658 1659 layout.drawBackground(canvas, highlight, highlightPaint, cursorOffsetVertical, 1660 firstLine, lastLine); 1661 1662 if (layout instanceof DynamicLayout) { 1663 if (mTextRenderNodes == null) { 1664 mTextRenderNodes = ArrayUtils.emptyArray(TextRenderNode.class); 1665 } 1666 1667 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1668 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1669 int[] blockIndices = dynamicLayout.getBlockIndices(); 1670 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1671 final int indexFirstChangedBlock = dynamicLayout.getIndexFirstChangedBlock(); 1672 1673 int endOfPreviousBlock = -1; 1674 int searchStartIndex = 0; 1675 for (int i = 0; i < numberOfBlocks; i++) { 1676 int blockEndLine = blockEndLines[i]; 1677 int blockIndex = blockIndices[i]; 1678 1679 final boolean blockIsInvalid = blockIndex == DynamicLayout.INVALID_BLOCK_INDEX; 1680 if (blockIsInvalid) { 1681 blockIndex = getAvailableDisplayListIndex(blockIndices, numberOfBlocks, 1682 searchStartIndex); 1683 // Note how dynamic layout's internal block indices get updated from Editor 1684 blockIndices[i] = blockIndex; 1685 if (mTextRenderNodes[blockIndex] != null) { 1686 mTextRenderNodes[blockIndex].isDirty = true; 1687 } 1688 searchStartIndex = blockIndex + 1; 1689 } 1690 1691 if (mTextRenderNodes[blockIndex] == null) { 1692 mTextRenderNodes[blockIndex] = 1693 new TextRenderNode("Text " + blockIndex); 1694 } 1695 1696 final boolean blockDisplayListIsInvalid = mTextRenderNodes[blockIndex].needsRecord(); 1697 RenderNode blockDisplayList = mTextRenderNodes[blockIndex].renderNode; 1698 if (i >= indexFirstChangedBlock || blockDisplayListIsInvalid) { 1699 final int blockBeginLine = endOfPreviousBlock + 1; 1700 final int top = layout.getLineTop(blockBeginLine); 1701 final int bottom = layout.getLineBottom(blockEndLine); 1702 int left = 0; 1703 int right = mTextView.getWidth(); 1704 if (mTextView.getHorizontallyScrolling()) { 1705 float min = Float.MAX_VALUE; 1706 float max = Float.MIN_VALUE; 1707 for (int line = blockBeginLine; line <= blockEndLine; line++) { 1708 min = Math.min(min, layout.getLineLeft(line)); 1709 max = Math.max(max, layout.getLineRight(line)); 1710 } 1711 left = (int) min; 1712 right = (int) (max + 0.5f); 1713 } 1714 1715 // Rebuild display list if it is invalid 1716 if (blockDisplayListIsInvalid) { 1717 final DisplayListCanvas displayListCanvas = blockDisplayList.start( 1718 right - left, bottom - top); 1719 try { 1720 // drawText is always relative to TextView's origin, this translation 1721 // brings this range of text back to the top left corner of the viewport 1722 displayListCanvas.translate(-left, -top); 1723 layout.drawText(displayListCanvas, blockBeginLine, blockEndLine); 1724 mTextRenderNodes[blockIndex].isDirty = false; 1725 // No need to untranslate, previous context is popped after 1726 // drawDisplayList 1727 } finally { 1728 blockDisplayList.end(displayListCanvas); 1729 // Same as drawDisplayList below, handled by our TextView's parent 1730 blockDisplayList.setClipToBounds(false); 1731 } 1732 } 1733 1734 // Valid disply list whose index is >= indexFirstChangedBlock 1735 // only needs to update its drawing location. 1736 blockDisplayList.setLeftTopRightBottom(left, top, right, bottom); 1737 } 1738 1739 ((DisplayListCanvas) canvas).drawRenderNode(blockDisplayList); 1740 1741 endOfPreviousBlock = blockEndLine; 1742 } 1743 1744 dynamicLayout.setIndexFirstChangedBlock(numberOfBlocks); 1745 } else { 1746 // Boring layout is used for empty and hint text 1747 layout.drawText(canvas, firstLine, lastLine); 1748 } 1749 } 1750 1751 private int getAvailableDisplayListIndex(int[] blockIndices, int numberOfBlocks, 1752 int searchStartIndex) { 1753 int length = mTextRenderNodes.length; 1754 for (int i = searchStartIndex; i < length; i++) { 1755 boolean blockIndexFound = false; 1756 for (int j = 0; j < numberOfBlocks; j++) { 1757 if (blockIndices[j] == i) { 1758 blockIndexFound = true; 1759 break; 1760 } 1761 } 1762 if (blockIndexFound) continue; 1763 return i; 1764 } 1765 1766 // No available index found, the pool has to grow 1767 mTextRenderNodes = GrowingArrayUtils.append(mTextRenderNodes, length, null); 1768 return length; 1769 } 1770 1771 private void drawCursor(Canvas canvas, int cursorOffsetVertical) { 1772 final boolean translate = cursorOffsetVertical != 0; 1773 if (translate) canvas.translate(0, cursorOffsetVertical); 1774 for (int i = 0; i < mCursorCount; i++) { 1775 mCursorDrawable[i].draw(canvas); 1776 } 1777 if (translate) canvas.translate(0, -cursorOffsetVertical); 1778 } 1779 1780 /** 1781 * Invalidates all the sub-display lists that overlap the specified character range 1782 */ 1783 void invalidateTextDisplayList(Layout layout, int start, int end) { 1784 if (mTextRenderNodes != null && layout instanceof DynamicLayout) { 1785 final int firstLine = layout.getLineForOffset(start); 1786 final int lastLine = layout.getLineForOffset(end); 1787 1788 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1789 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1790 int[] blockIndices = dynamicLayout.getBlockIndices(); 1791 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1792 1793 int i = 0; 1794 // Skip the blocks before firstLine 1795 while (i < numberOfBlocks) { 1796 if (blockEndLines[i] >= firstLine) break; 1797 i++; 1798 } 1799 1800 // Invalidate all subsequent blocks until lastLine is passed 1801 while (i < numberOfBlocks) { 1802 final int blockIndex = blockIndices[i]; 1803 if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX) { 1804 mTextRenderNodes[blockIndex].isDirty = true; 1805 } 1806 if (blockEndLines[i] >= lastLine) break; 1807 i++; 1808 } 1809 } 1810 } 1811 1812 void invalidateTextDisplayList() { 1813 if (mTextRenderNodes != null) { 1814 for (int i = 0; i < mTextRenderNodes.length; i++) { 1815 if (mTextRenderNodes[i] != null) mTextRenderNodes[i].isDirty = true; 1816 } 1817 } 1818 } 1819 1820 void updateCursorsPositions() { 1821 if (mTextView.mCursorDrawableRes == 0) { 1822 mCursorCount = 0; 1823 return; 1824 } 1825 1826 Layout layout = getActiveLayout(); 1827 final int offset = mTextView.getSelectionStart(); 1828 final int line = layout.getLineForOffset(offset); 1829 final int top = layout.getLineTop(line); 1830 final int bottom = layout.getLineTop(line + 1); 1831 1832 mCursorCount = layout.isLevelBoundary(offset) ? 2 : 1; 1833 1834 int middle = bottom; 1835 if (mCursorCount == 2) { 1836 // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)} 1837 middle = (top + bottom) >> 1; 1838 } 1839 1840 boolean clamped = layout.shouldClampCursor(line); 1841 updateCursorPosition(0, top, middle, layout.getPrimaryHorizontal(offset, clamped)); 1842 1843 if (mCursorCount == 2) { 1844 updateCursorPosition(1, middle, bottom, layout.getSecondaryHorizontal(offset, clamped)); 1845 } 1846 } 1847 1848 void refreshTextActionMode() { 1849 if (extractedTextModeWillBeStarted()) { 1850 return; 1851 } 1852 final boolean hasSelection = mTextView.hasSelection(); 1853 final SelectionModifierCursorController selectionController = getSelectionController(); 1854 final InsertionPointCursorController insertionController = getInsertionController(); 1855 if ((selectionController != null && selectionController.isCursorBeingModified()) 1856 || (insertionController != null && insertionController.isCursorBeingModified())) { 1857 // ActionMode should be managed by the currently active cursor controller. 1858 return; 1859 } 1860 if (hasSelection) { 1861 if (mTextActionMode == null || selectionController == null 1862 || !selectionController.isActive()) { 1863 // Avoid dismissing the selection if it exists. 1864 stopTextActionModeWithPreservingSelection(); 1865 startSelectionActionMode(); 1866 } else { 1867 mTextActionMode.invalidateContentRect(); 1868 } 1869 } else { 1870 // Insertion action mode is started only when insertion controller is explicitly 1871 // activated. 1872 if (insertionController == null || !insertionController.isActive()) { 1873 stopTextActionMode(); 1874 } else if (mTextActionMode != null) { 1875 mTextActionMode.invalidateContentRect(); 1876 } 1877 } 1878 } 1879 1880 /** 1881 * Start an Insertion action mode. 1882 */ 1883 void startInsertionActionMode() { 1884 if (mInsertionActionModeRunnable != null) { 1885 mTextView.removeCallbacks(mInsertionActionModeRunnable); 1886 } 1887 if (extractedTextModeWillBeStarted()) { 1888 return; 1889 } 1890 stopTextActionMode(); 1891 1892 ActionMode.Callback actionModeCallback = 1893 new TextActionModeCallback(false /* hasSelection */); 1894 mTextActionMode = mTextView.startActionMode( 1895 actionModeCallback, ActionMode.TYPE_FLOATING); 1896 if (mTextActionMode != null && getInsertionController() != null) { 1897 getInsertionController().show(); 1898 } 1899 } 1900 1901 /** 1902 * Starts a Selection Action Mode with the current selection and ensures the selection handles 1903 * are shown if there is a selection. This should be used when the mode is started from a 1904 * non-touch event. 1905 * 1906 * @return true if the selection mode was actually started. 1907 */ 1908 private boolean startSelectionActionMode() { 1909 boolean selectionStarted = startSelectionActionModeInternal(); 1910 if (selectionStarted) { 1911 getSelectionController().show(); 1912 } 1913 return selectionStarted; 1914 } 1915 1916 /** 1917 * If the TextView allows text selection, selects the current word when no existing selection 1918 * was available and starts a drag. 1919 * 1920 * @return true if the drag was started. 1921 */ 1922 private boolean selectCurrentWordAndStartDrag() { 1923 if (mInsertionActionModeRunnable != null) { 1924 mTextView.removeCallbacks(mInsertionActionModeRunnable); 1925 } 1926 if (extractedTextModeWillBeStarted()) { 1927 return false; 1928 } 1929 if (!checkField()) { 1930 return false; 1931 } 1932 if (!mTextView.hasSelection() && !selectCurrentWord()) { 1933 // No selection and cannot select a word. 1934 return false; 1935 } 1936 stopTextActionModeWithPreservingSelection(); 1937 getSelectionController().enterDrag( 1938 SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_WORD); 1939 return true; 1940 } 1941 1942 /** 1943 * Checks whether a selection can be performed on the current TextView. 1944 * 1945 * @return true if a selection can be performed 1946 */ 1947 boolean checkField() { 1948 if (!mTextView.canSelectText() || !mTextView.requestFocus()) { 1949 Log.w(TextView.LOG_TAG, 1950 "TextView does not support text selection. Selection cancelled."); 1951 return false; 1952 } 1953 return true; 1954 } 1955 1956 private boolean startSelectionActionModeInternal() { 1957 if (extractedTextModeWillBeStarted()) { 1958 return false; 1959 } 1960 if (mTextActionMode != null) { 1961 // Text action mode is already started 1962 mTextActionMode.invalidate(); 1963 return false; 1964 } 1965 1966 if (!checkField() || !mTextView.hasSelection()) { 1967 return false; 1968 } 1969 1970 ActionMode.Callback actionModeCallback = 1971 new TextActionModeCallback(true /* hasSelection */); 1972 mTextActionMode = mTextView.startActionMode(actionModeCallback, ActionMode.TYPE_FLOATING); 1973 1974 final boolean selectionStarted = mTextActionMode != null; 1975 if (selectionStarted && !mTextView.isTextSelectable() && mShowSoftInputOnFocus) { 1976 // Show the IME to be able to replace text, except when selecting non editable text. 1977 final InputMethodManager imm = InputMethodManager.peekInstance(); 1978 if (imm != null) { 1979 imm.showSoftInput(mTextView, 0, null); 1980 } 1981 } 1982 return selectionStarted; 1983 } 1984 1985 boolean extractedTextModeWillBeStarted() { 1986 if (!(mTextView.isInExtractedMode())) { 1987 final InputMethodManager imm = InputMethodManager.peekInstance(); 1988 return imm != null && imm.isFullscreenMode(); 1989 } 1990 return false; 1991 } 1992 1993 /** 1994 * @return <code>true</code> if it's reasonable to offer to show suggestions depending on 1995 * the current cursor position or selection range. This method is consistent with the 1996 * method to show suggestions {@link SuggestionsPopupWindow#updateSuggestions}. 1997 */ 1998 private boolean shouldOfferToShowSuggestions() { 1999 CharSequence text = mTextView.getText(); 2000 if (!(text instanceof Spannable)) return false; 2001 2002 final Spannable spannable = (Spannable) text; 2003 final int selectionStart = mTextView.getSelectionStart(); 2004 final int selectionEnd = mTextView.getSelectionEnd(); 2005 final SuggestionSpan[] suggestionSpans = spannable.getSpans(selectionStart, selectionEnd, 2006 SuggestionSpan.class); 2007 if (suggestionSpans.length == 0) { 2008 return false; 2009 } 2010 if (selectionStart == selectionEnd) { 2011 // Spans overlap the cursor. 2012 for (int i = 0; i < suggestionSpans.length; i++) { 2013 if (suggestionSpans[i].getSuggestions().length > 0) { 2014 return true; 2015 } 2016 } 2017 return false; 2018 } 2019 int minSpanStart = mTextView.getText().length(); 2020 int maxSpanEnd = 0; 2021 int unionOfSpansCoveringSelectionStartStart = mTextView.getText().length(); 2022 int unionOfSpansCoveringSelectionStartEnd = 0; 2023 boolean hasValidSuggestions = false; 2024 for (int i = 0; i < suggestionSpans.length; i++) { 2025 final int spanStart = spannable.getSpanStart(suggestionSpans[i]); 2026 final int spanEnd = spannable.getSpanEnd(suggestionSpans[i]); 2027 minSpanStart = Math.min(minSpanStart, spanStart); 2028 maxSpanEnd = Math.max(maxSpanEnd, spanEnd); 2029 if (selectionStart < spanStart || selectionStart > spanEnd) { 2030 // The span doesn't cover the current selection start point. 2031 continue; 2032 } 2033 hasValidSuggestions = 2034 hasValidSuggestions || suggestionSpans[i].getSuggestions().length > 0; 2035 unionOfSpansCoveringSelectionStartStart = 2036 Math.min(unionOfSpansCoveringSelectionStartStart, spanStart); 2037 unionOfSpansCoveringSelectionStartEnd = 2038 Math.max(unionOfSpansCoveringSelectionStartEnd, spanEnd); 2039 } 2040 if (!hasValidSuggestions) { 2041 return false; 2042 } 2043 if (unionOfSpansCoveringSelectionStartStart >= unionOfSpansCoveringSelectionStartEnd) { 2044 // No spans cover the selection start point. 2045 return false; 2046 } 2047 if (minSpanStart < unionOfSpansCoveringSelectionStartStart 2048 || maxSpanEnd > unionOfSpansCoveringSelectionStartEnd) { 2049 // There is a span that is not covered by the union. In this case, we soouldn't offer 2050 // to show suggestions as it's confusing. 2051 return false; 2052 } 2053 return true; 2054 } 2055 2056 /** 2057 * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with 2058 * {@link SuggestionSpan#FLAG_EASY_CORRECT} set. 2059 */ 2060 private boolean isCursorInsideEasyCorrectionSpan() { 2061 Spannable spannable = (Spannable) mTextView.getText(); 2062 SuggestionSpan[] suggestionSpans = spannable.getSpans(mTextView.getSelectionStart(), 2063 mTextView.getSelectionEnd(), SuggestionSpan.class); 2064 for (int i = 0; i < suggestionSpans.length; i++) { 2065 if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) { 2066 return true; 2067 } 2068 } 2069 return false; 2070 } 2071 2072 void onTouchUpEvent(MotionEvent event) { 2073 boolean selectAllGotFocus = mSelectAllOnFocus && mTextView.didTouchFocusSelect(); 2074 hideCursorAndSpanControllers(); 2075 stopTextActionMode(); 2076 CharSequence text = mTextView.getText(); 2077 if (!selectAllGotFocus && text.length() > 0) { 2078 // Move cursor 2079 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 2080 Selection.setSelection((Spannable) text, offset); 2081 if (mSpellChecker != null) { 2082 // When the cursor moves, the word that was typed may need spell check 2083 mSpellChecker.onSelectionChanged(); 2084 } 2085 2086 if (!extractedTextModeWillBeStarted()) { 2087 if (isCursorInsideEasyCorrectionSpan()) { 2088 // Cancel the single tap delayed runnable. 2089 if (mInsertionActionModeRunnable != null) { 2090 mTextView.removeCallbacks(mInsertionActionModeRunnable); 2091 } 2092 2093 mShowSuggestionRunnable = new Runnable() { 2094 public void run() { 2095 replace(); 2096 } 2097 }; 2098 // removeCallbacks is performed on every touch 2099 mTextView.postDelayed(mShowSuggestionRunnable, 2100 ViewConfiguration.getDoubleTapTimeout()); 2101 } else if (hasInsertionController()) { 2102 getInsertionController().show(); 2103 } 2104 } 2105 } 2106 } 2107 2108 protected void stopTextActionMode() { 2109 if (mTextActionMode != null) { 2110 // This will hide the mSelectionModifierCursorController 2111 mTextActionMode.finish(); 2112 } 2113 } 2114 2115 private void stopTextActionModeWithPreservingSelection() { 2116 mPreserveSelection = true; 2117 stopTextActionMode(); 2118 mPreserveSelection = false; 2119 } 2120 2121 /** 2122 * @return True if this view supports insertion handles. 2123 */ 2124 boolean hasInsertionController() { 2125 return mInsertionControllerEnabled; 2126 } 2127 2128 /** 2129 * @return True if this view supports selection handles. 2130 */ 2131 boolean hasSelectionController() { 2132 return mSelectionControllerEnabled; 2133 } 2134 2135 InsertionPointCursorController getInsertionController() { 2136 if (!mInsertionControllerEnabled) { 2137 return null; 2138 } 2139 2140 if (mInsertionPointCursorController == null) { 2141 mInsertionPointCursorController = new InsertionPointCursorController(); 2142 2143 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 2144 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 2145 } 2146 2147 return mInsertionPointCursorController; 2148 } 2149 2150 SelectionModifierCursorController getSelectionController() { 2151 if (!mSelectionControllerEnabled) { 2152 return null; 2153 } 2154 2155 if (mSelectionModifierCursorController == null) { 2156 mSelectionModifierCursorController = new SelectionModifierCursorController(); 2157 2158 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 2159 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 2160 } 2161 2162 return mSelectionModifierCursorController; 2163 } 2164 2165 /** 2166 * @hide 2167 */ 2168 @VisibleForTesting 2169 public Drawable[] getCursorDrawable() { 2170 return mCursorDrawable; 2171 } 2172 2173 private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) { 2174 if (mCursorDrawable[cursorIndex] == null) 2175 mCursorDrawable[cursorIndex] = mTextView.getContext().getDrawable( 2176 mTextView.mCursorDrawableRes); 2177 final Drawable drawable = mCursorDrawable[cursorIndex]; 2178 final int left = clampCursorHorizontalPosition(drawable, horizontal); 2179 final int width = drawable.getIntrinsicWidth(); 2180 drawable.setBounds(left, top - mTempRect.top, left + width, 2181 bottom + mTempRect.bottom); 2182 } 2183 2184 /** 2185 * Return clamped position for the cursor. If the cursor is within the boundaries of the view, 2186 * then it is offset with the left padding of the cursor drawable. If the cursor is at 2187 * the beginning or the end of the text then its drawable edge is aligned with left or right of 2188 * the view boundary. 2189 * 2190 * @param drawable Cursor drawable. 2191 * @param horizontal Horizontal position for the cursor. 2192 * @return The clamped horizontal position for the cursor. 2193 */ 2194 private final int clampCursorHorizontalPosition(final Drawable drawable, float 2195 horizontal) { 2196 horizontal = Math.max(0.5f, horizontal - 0.5f); 2197 if (mTempRect == null) mTempRect = new Rect(); 2198 drawable.getPadding(mTempRect); 2199 int scrollX = mTextView.getScrollX(); 2200 float horizontalDiff = horizontal - scrollX; 2201 int viewClippedWidth = mTextView.getWidth() - mTextView.getCompoundPaddingLeft() 2202 - mTextView.getCompoundPaddingRight(); 2203 2204 final int left; 2205 if (horizontalDiff >= (viewClippedWidth - 1f)) { 2206 // at the rightmost position 2207 final int cursorWidth = drawable.getIntrinsicWidth(); 2208 left = viewClippedWidth + scrollX - (cursorWidth - mTempRect.right); 2209 } else if (Math.abs(horizontalDiff) <= 1f) { 2210 // at the leftmost position 2211 left = scrollX - mTempRect.left; 2212 } else { 2213 left = (int) horizontal - mTempRect.left; 2214 } 2215 return left; 2216 } 2217 2218 /** 2219 * Called by the framework in response to a text auto-correction (such as fixing a typo using a 2220 * a dictionary) from the current input method, provided by it calling 2221 * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default 2222 * implementation flashes the background of the corrected word to provide feedback to the user. 2223 * 2224 * @param info The auto correct info about the text that was corrected. 2225 */ 2226 public void onCommitCorrection(CorrectionInfo info) { 2227 if (mCorrectionHighlighter == null) { 2228 mCorrectionHighlighter = new CorrectionHighlighter(); 2229 } else { 2230 mCorrectionHighlighter.invalidate(false); 2231 } 2232 2233 mCorrectionHighlighter.highlight(info); 2234 } 2235 2236 void onScrollChanged() { 2237 if (mPositionListener != null) { 2238 mPositionListener.onScrollChanged(); 2239 } 2240 if (mTextActionMode != null) { 2241 mTextActionMode.invalidateContentRect(); 2242 } 2243 } 2244 2245 /** 2246 * @return True when the TextView isFocused and has a valid zero-length selection (cursor). 2247 */ 2248 private boolean shouldBlink() { 2249 if (!isCursorVisible() || !mTextView.isFocused()) return false; 2250 2251 final int start = mTextView.getSelectionStart(); 2252 if (start < 0) return false; 2253 2254 final int end = mTextView.getSelectionEnd(); 2255 if (end < 0) return false; 2256 2257 return start == end; 2258 } 2259 2260 void makeBlink() { 2261 if (shouldBlink()) { 2262 mShowCursor = SystemClock.uptimeMillis(); 2263 if (mBlink == null) mBlink = new Blink(); 2264 mTextView.removeCallbacks(mBlink); 2265 mTextView.postDelayed(mBlink, BLINK); 2266 } else { 2267 if (mBlink != null) mTextView.removeCallbacks(mBlink); 2268 } 2269 } 2270 2271 private class Blink implements Runnable { 2272 private boolean mCancelled; 2273 2274 public void run() { 2275 if (mCancelled) { 2276 return; 2277 } 2278 2279 mTextView.removeCallbacks(this); 2280 2281 if (shouldBlink()) { 2282 if (mTextView.getLayout() != null) { 2283 mTextView.invalidateCursorPath(); 2284 } 2285 2286 mTextView.postDelayed(this, BLINK); 2287 } 2288 } 2289 2290 void cancel() { 2291 if (!mCancelled) { 2292 mTextView.removeCallbacks(this); 2293 mCancelled = true; 2294 } 2295 } 2296 2297 void uncancel() { 2298 mCancelled = false; 2299 } 2300 } 2301 2302 private DragShadowBuilder getTextThumbnailBuilder(int start, int end) { 2303 TextView shadowView = (TextView) View.inflate(mTextView.getContext(), 2304 com.android.internal.R.layout.text_drag_thumbnail, null); 2305 2306 if (shadowView == null) { 2307 throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); 2308 } 2309 2310 if (end - start > DRAG_SHADOW_MAX_TEXT_LENGTH) { 2311 final long range = getCharClusterRange(start + DRAG_SHADOW_MAX_TEXT_LENGTH); 2312 end = TextUtils.unpackRangeEndFromLong(range); 2313 } 2314 final CharSequence text = mTextView.getTransformedText(start, end); 2315 shadowView.setText(text); 2316 shadowView.setTextColor(mTextView.getTextColors()); 2317 2318 shadowView.setTextAppearance(R.styleable.Theme_textAppearanceLarge); 2319 shadowView.setGravity(Gravity.CENTER); 2320 2321 shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2322 ViewGroup.LayoutParams.WRAP_CONTENT)); 2323 2324 final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); 2325 shadowView.measure(size, size); 2326 2327 shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight()); 2328 shadowView.invalidate(); 2329 return new DragShadowBuilder(shadowView); 2330 } 2331 2332 private static class DragLocalState { 2333 public TextView sourceTextView; 2334 public int start, end; 2335 2336 public DragLocalState(TextView sourceTextView, int start, int end) { 2337 this.sourceTextView = sourceTextView; 2338 this.start = start; 2339 this.end = end; 2340 } 2341 } 2342 2343 void onDrop(DragEvent event) { 2344 StringBuilder content = new StringBuilder(""); 2345 2346 final DropPermissions dropPermissions = DropPermissions.obtain(event); 2347 if (dropPermissions != null) { 2348 dropPermissions.takeTransient(); 2349 } 2350 2351 try { 2352 ClipData clipData = event.getClipData(); 2353 final int itemCount = clipData.getItemCount(); 2354 for (int i=0; i < itemCount; i++) { 2355 Item item = clipData.getItemAt(i); 2356 content.append(item.coerceToStyledText(mTextView.getContext())); 2357 } 2358 } 2359 finally { 2360 if (dropPermissions != null) { 2361 dropPermissions.release(); 2362 } 2363 } 2364 2365 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 2366 2367 Object localState = event.getLocalState(); 2368 DragLocalState dragLocalState = null; 2369 if (localState instanceof DragLocalState) { 2370 dragLocalState = (DragLocalState) localState; 2371 } 2372 boolean dragDropIntoItself = dragLocalState != null && 2373 dragLocalState.sourceTextView == mTextView; 2374 2375 if (dragDropIntoItself) { 2376 if (offset >= dragLocalState.start && offset < dragLocalState.end) { 2377 // A drop inside the original selection discards the drop. 2378 return; 2379 } 2380 } 2381 2382 final int originalLength = mTextView.getText().length(); 2383 int min = offset; 2384 int max = offset; 2385 2386 Selection.setSelection((Spannable) mTextView.getText(), max); 2387 mTextView.replaceText_internal(min, max, content); 2388 2389 if (dragDropIntoItself) { 2390 int dragSourceStart = dragLocalState.start; 2391 int dragSourceEnd = dragLocalState.end; 2392 if (max <= dragSourceStart) { 2393 // Inserting text before selection has shifted positions 2394 final int shift = mTextView.getText().length() - originalLength; 2395 dragSourceStart += shift; 2396 dragSourceEnd += shift; 2397 } 2398 2399 mUndoInputFilter.setForceMerge(true); 2400 try { 2401 // Delete original selection 2402 mTextView.deleteText_internal(dragSourceStart, dragSourceEnd); 2403 2404 // Make sure we do not leave two adjacent spaces. 2405 final int prevCharIdx = Math.max(0, dragSourceStart - 1); 2406 final int nextCharIdx = Math.min(mTextView.getText().length(), dragSourceStart + 1); 2407 if (nextCharIdx > prevCharIdx + 1) { 2408 CharSequence t = mTextView.getTransformedText(prevCharIdx, nextCharIdx); 2409 if (Character.isSpaceChar(t.charAt(0)) && Character.isSpaceChar(t.charAt(1))) { 2410 mTextView.deleteText_internal(prevCharIdx, prevCharIdx + 1); 2411 } 2412 } 2413 } finally { 2414 mUndoInputFilter.setForceMerge(false); 2415 } 2416 } 2417 } 2418 2419 public void addSpanWatchers(Spannable text) { 2420 final int textLength = text.length(); 2421 2422 if (mKeyListener != null) { 2423 text.setSpan(mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2424 } 2425 2426 if (mSpanController == null) { 2427 mSpanController = new SpanController(); 2428 } 2429 text.setSpan(mSpanController, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2430 } 2431 2432 void setContextMenuAnchor(float x, float y) { 2433 mContextMenuAnchorX = x; 2434 mContextMenuAnchorY = y; 2435 } 2436 2437 void onCreateContextMenu(ContextMenu menu) { 2438 if (mIsBeingLongClicked || Float.isNaN(mContextMenuAnchorX) 2439 || Float.isNaN(mContextMenuAnchorY)) { 2440 return; 2441 } 2442 final int offset = mTextView.getOffsetForPosition(mContextMenuAnchorX, mContextMenuAnchorY); 2443 if (offset == -1) { 2444 return; 2445 } 2446 stopTextActionModeWithPreservingSelection(); 2447 final boolean isOnSelection = mTextView.hasSelection() 2448 && offset >= mTextView.getSelectionStart() && offset <= mTextView.getSelectionEnd(); 2449 if (!isOnSelection) { 2450 // Right clicked position is not on the selection. Remove the selection and move the 2451 // cursor to the right clicked position. 2452 Selection.setSelection((Spannable) mTextView.getText(), offset); 2453 stopTextActionMode(); 2454 } 2455 2456 if (shouldOfferToShowSuggestions()) { 2457 final SuggestionInfo[] suggestionInfoArray = 2458 new SuggestionInfo[SuggestionSpan.SUGGESTIONS_MAX_SIZE]; 2459 for (int i = 0; i < suggestionInfoArray.length; i++) { 2460 suggestionInfoArray[i] = new SuggestionInfo(); 2461 } 2462 final SubMenu subMenu = menu.addSubMenu(Menu.NONE, Menu.NONE, MENU_ITEM_ORDER_REPLACE, 2463 com.android.internal.R.string.replace); 2464 final int numItems = mSuggestionHelper.getSuggestionInfo(suggestionInfoArray, null); 2465 for (int i = 0; i < numItems; i++) { 2466 final SuggestionInfo info = suggestionInfoArray[i]; 2467 subMenu.add(Menu.NONE, Menu.NONE, i, info.mText) 2468 .setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() { 2469 @Override 2470 public boolean onMenuItemClick(MenuItem item) { 2471 replaceWithSuggestion(info); 2472 return true; 2473 } 2474 }); 2475 } 2476 } 2477 2478 menu.add(Menu.NONE, TextView.ID_UNDO, MENU_ITEM_ORDER_UNDO, 2479 com.android.internal.R.string.undo) 2480 .setAlphabeticShortcut('z') 2481 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2482 .setEnabled(mTextView.canUndo()); 2483 menu.add(Menu.NONE, TextView.ID_REDO, MENU_ITEM_ORDER_REDO, 2484 com.android.internal.R.string.redo) 2485 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2486 .setEnabled(mTextView.canRedo()); 2487 2488 menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, 2489 com.android.internal.R.string.cut) 2490 .setAlphabeticShortcut('x') 2491 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2492 .setEnabled(mTextView.canCut()); 2493 menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, 2494 com.android.internal.R.string.copy) 2495 .setAlphabeticShortcut('c') 2496 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2497 .setEnabled(mTextView.canCopy()); 2498 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, 2499 com.android.internal.R.string.paste) 2500 .setAlphabeticShortcut('v') 2501 .setEnabled(mTextView.canPaste()) 2502 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2503 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE_AS_PLAIN_TEXT, 2504 com.android.internal.R.string.paste_as_plain_text) 2505 .setEnabled(mTextView.canPaste()) 2506 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2507 menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, 2508 com.android.internal.R.string.share) 2509 .setEnabled(mTextView.canShare()) 2510 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2511 menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, 2512 com.android.internal.R.string.selectAll) 2513 .setAlphabeticShortcut('a') 2514 .setEnabled(mTextView.canSelectAllText()) 2515 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2516 2517 mPreserveSelection = true; 2518 } 2519 2520 @Nullable 2521 private SuggestionSpan findEquivalentSuggestionSpan( 2522 @NonNull SuggestionSpanInfo suggestionSpanInfo) { 2523 final Editable editable = (Editable) mTextView.getText(); 2524 if (editable.getSpanStart(suggestionSpanInfo.mSuggestionSpan) >= 0) { 2525 // Exactly same span is found. 2526 return suggestionSpanInfo.mSuggestionSpan; 2527 } 2528 // Suggestion span couldn't be found. Try to find a suggestion span that has the same 2529 // contents. 2530 final SuggestionSpan[] suggestionSpans = editable.getSpans(suggestionSpanInfo.mSpanStart, 2531 suggestionSpanInfo.mSpanEnd, SuggestionSpan.class); 2532 for (final SuggestionSpan suggestionSpan : suggestionSpans) { 2533 final int start = editable.getSpanStart(suggestionSpan); 2534 if (start != suggestionSpanInfo.mSpanStart) { 2535 continue; 2536 } 2537 final int end = editable.getSpanEnd(suggestionSpan); 2538 if (end != suggestionSpanInfo.mSpanEnd) { 2539 continue; 2540 } 2541 if (suggestionSpan.equals(suggestionSpanInfo.mSuggestionSpan)) { 2542 return suggestionSpan; 2543 } 2544 } 2545 return null; 2546 } 2547 2548 private void replaceWithSuggestion(@NonNull final SuggestionInfo suggestionInfo) { 2549 final SuggestionSpan targetSuggestionSpan = findEquivalentSuggestionSpan( 2550 suggestionInfo.mSuggestionSpanInfo); 2551 if (targetSuggestionSpan == null) { 2552 // Span has been removed 2553 return; 2554 } 2555 final Editable editable = (Editable) mTextView.getText(); 2556 final int spanStart = editable.getSpanStart(targetSuggestionSpan); 2557 final int spanEnd = editable.getSpanEnd(targetSuggestionSpan); 2558 if (spanStart < 0 || spanEnd <= spanStart) { 2559 // Span has been removed 2560 return; 2561 } 2562 2563 final String originalText = TextUtils.substring(editable, spanStart, spanEnd); 2564 // SuggestionSpans are removed by replace: save them before 2565 SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd, 2566 SuggestionSpan.class); 2567 final int length = suggestionSpans.length; 2568 int[] suggestionSpansStarts = new int[length]; 2569 int[] suggestionSpansEnds = new int[length]; 2570 int[] suggestionSpansFlags = new int[length]; 2571 for (int i = 0; i < length; i++) { 2572 final SuggestionSpan suggestionSpan = suggestionSpans[i]; 2573 suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan); 2574 suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan); 2575 suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan); 2576 2577 // Remove potential misspelled flags 2578 int suggestionSpanFlags = suggestionSpan.getFlags(); 2579 if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) != 0) { 2580 suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED; 2581 suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 2582 suggestionSpan.setFlags(suggestionSpanFlags); 2583 } 2584 } 2585 2586 // Notify source IME of the suggestion pick. Do this before swapping texts. 2587 targetSuggestionSpan.notifySelection( 2588 mTextView.getContext(), originalText, suggestionInfo.mSuggestionIndex); 2589 2590 // Swap text content between actual text and Suggestion span 2591 final int suggestionStart = suggestionInfo.mSuggestionStart; 2592 final int suggestionEnd = suggestionInfo.mSuggestionEnd; 2593 final String suggestion = suggestionInfo.mText.subSequence( 2594 suggestionStart, suggestionEnd).toString(); 2595 mTextView.replaceText_internal(spanStart, spanEnd, suggestion); 2596 2597 String[] suggestions = targetSuggestionSpan.getSuggestions(); 2598 suggestions[suggestionInfo.mSuggestionIndex] = originalText; 2599 2600 // Restore previous SuggestionSpans 2601 final int lengthDelta = suggestion.length() - (spanEnd - spanStart); 2602 for (int i = 0; i < length; i++) { 2603 // Only spans that include the modified region make sense after replacement 2604 // Spans partially included in the replaced region are removed, there is no 2605 // way to assign them a valid range after replacement 2606 if (suggestionSpansStarts[i] <= spanStart && suggestionSpansEnds[i] >= spanEnd) { 2607 mTextView.setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i], 2608 suggestionSpansEnds[i] + lengthDelta, suggestionSpansFlags[i]); 2609 } 2610 } 2611 // Move cursor at the end of the replaced word 2612 final int newCursorPosition = spanEnd + lengthDelta; 2613 mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); 2614 } 2615 2616 private final MenuItem.OnMenuItemClickListener mOnContextMenuItemClickListener = 2617 new MenuItem.OnMenuItemClickListener() { 2618 @Override 2619 public boolean onMenuItemClick(MenuItem item) { 2620 if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { 2621 return true; 2622 } 2623 return mTextView.onTextContextMenuItem(item.getItemId()); 2624 } 2625 }; 2626 2627 /** 2628 * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related 2629 * pop-up should be displayed. 2630 * Also monitors {@link Selection} to call back to the attached input method. 2631 */ 2632 class SpanController implements SpanWatcher { 2633 2634 private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs 2635 2636 private EasyEditPopupWindow mPopupWindow; 2637 2638 private Runnable mHidePopup; 2639 2640 // This function is pure but inner classes can't have static functions 2641 private boolean isNonIntermediateSelectionSpan(final Spannable text, 2642 final Object span) { 2643 return (Selection.SELECTION_START == span || Selection.SELECTION_END == span) 2644 && (text.getSpanFlags(span) & Spanned.SPAN_INTERMEDIATE) == 0; 2645 } 2646 2647 @Override 2648 public void onSpanAdded(Spannable text, Object span, int start, int end) { 2649 if (isNonIntermediateSelectionSpan(text, span)) { 2650 sendUpdateSelection(); 2651 } else if (span instanceof EasyEditSpan) { 2652 if (mPopupWindow == null) { 2653 mPopupWindow = new EasyEditPopupWindow(); 2654 mHidePopup = new Runnable() { 2655 @Override 2656 public void run() { 2657 hide(); 2658 } 2659 }; 2660 } 2661 2662 // Make sure there is only at most one EasyEditSpan in the text 2663 if (mPopupWindow.mEasyEditSpan != null) { 2664 mPopupWindow.mEasyEditSpan.setDeleteEnabled(false); 2665 } 2666 2667 mPopupWindow.setEasyEditSpan((EasyEditSpan) span); 2668 mPopupWindow.setOnDeleteListener(new EasyEditDeleteListener() { 2669 @Override 2670 public void onDeleteClick(EasyEditSpan span) { 2671 Editable editable = (Editable) mTextView.getText(); 2672 int start = editable.getSpanStart(span); 2673 int end = editable.getSpanEnd(span); 2674 if (start >= 0 && end >= 0) { 2675 sendEasySpanNotification(EasyEditSpan.TEXT_DELETED, span); 2676 mTextView.deleteText_internal(start, end); 2677 } 2678 editable.removeSpan(span); 2679 } 2680 }); 2681 2682 if (mTextView.getWindowVisibility() != View.VISIBLE) { 2683 // The window is not visible yet, ignore the text change. 2684 return; 2685 } 2686 2687 if (mTextView.getLayout() == null) { 2688 // The view has not been laid out yet, ignore the text change 2689 return; 2690 } 2691 2692 if (extractedTextModeWillBeStarted()) { 2693 // The input is in extract mode. Do not handle the easy edit in 2694 // the original TextView, as the ExtractEditText will do 2695 return; 2696 } 2697 2698 mPopupWindow.show(); 2699 mTextView.removeCallbacks(mHidePopup); 2700 mTextView.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS); 2701 } 2702 } 2703 2704 @Override 2705 public void onSpanRemoved(Spannable text, Object span, int start, int end) { 2706 if (isNonIntermediateSelectionSpan(text, span)) { 2707 sendUpdateSelection(); 2708 } else if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { 2709 hide(); 2710 } 2711 } 2712 2713 @Override 2714 public void onSpanChanged(Spannable text, Object span, int previousStart, int previousEnd, 2715 int newStart, int newEnd) { 2716 if (isNonIntermediateSelectionSpan(text, span)) { 2717 sendUpdateSelection(); 2718 } else if (mPopupWindow != null && span instanceof EasyEditSpan) { 2719 EasyEditSpan easyEditSpan = (EasyEditSpan) span; 2720 sendEasySpanNotification(EasyEditSpan.TEXT_MODIFIED, easyEditSpan); 2721 text.removeSpan(easyEditSpan); 2722 } 2723 } 2724 2725 public void hide() { 2726 if (mPopupWindow != null) { 2727 mPopupWindow.hide(); 2728 mTextView.removeCallbacks(mHidePopup); 2729 } 2730 } 2731 2732 private void sendEasySpanNotification(int textChangedType, EasyEditSpan span) { 2733 try { 2734 PendingIntent pendingIntent = span.getPendingIntent(); 2735 if (pendingIntent != null) { 2736 Intent intent = new Intent(); 2737 intent.putExtra(EasyEditSpan.EXTRA_TEXT_CHANGED_TYPE, textChangedType); 2738 pendingIntent.send(mTextView.getContext(), 0, intent); 2739 } 2740 } catch (CanceledException e) { 2741 // This should not happen, as we should try to send the intent only once. 2742 Log.w(TAG, "PendingIntent for notification cannot be sent", e); 2743 } 2744 } 2745 } 2746 2747 /** 2748 * Listens for the delete event triggered by {@link EasyEditPopupWindow}. 2749 */ 2750 private interface EasyEditDeleteListener { 2751 2752 /** 2753 * Clicks the delete pop-up. 2754 */ 2755 void onDeleteClick(EasyEditSpan span); 2756 } 2757 2758 /** 2759 * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled 2760 * by {@link SpanController}. 2761 */ 2762 private class EasyEditPopupWindow extends PinnedPopupWindow 2763 implements OnClickListener { 2764 private static final int POPUP_TEXT_LAYOUT = 2765 com.android.internal.R.layout.text_edit_action_popup_text; 2766 private TextView mDeleteTextView; 2767 private EasyEditSpan mEasyEditSpan; 2768 private EasyEditDeleteListener mOnDeleteListener; 2769 2770 @Override 2771 protected void createPopupWindow() { 2772 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 2773 com.android.internal.R.attr.textSelectHandleWindowStyle); 2774 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 2775 mPopupWindow.setClippingEnabled(true); 2776 } 2777 2778 @Override 2779 protected void initContentView() { 2780 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 2781 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 2782 mContentView = linearLayout; 2783 mContentView.setBackgroundResource( 2784 com.android.internal.R.drawable.text_edit_side_paste_window); 2785 2786 LayoutInflater inflater = (LayoutInflater)mTextView.getContext(). 2787 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2788 2789 LayoutParams wrapContent = new LayoutParams( 2790 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 2791 2792 mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2793 mDeleteTextView.setLayoutParams(wrapContent); 2794 mDeleteTextView.setText(com.android.internal.R.string.delete); 2795 mDeleteTextView.setOnClickListener(this); 2796 mContentView.addView(mDeleteTextView); 2797 } 2798 2799 public void setEasyEditSpan(EasyEditSpan easyEditSpan) { 2800 mEasyEditSpan = easyEditSpan; 2801 } 2802 2803 private void setOnDeleteListener(EasyEditDeleteListener listener) { 2804 mOnDeleteListener = listener; 2805 } 2806 2807 @Override 2808 public void onClick(View view) { 2809 if (view == mDeleteTextView 2810 && mEasyEditSpan != null && mEasyEditSpan.isDeleteEnabled() 2811 && mOnDeleteListener != null) { 2812 mOnDeleteListener.onDeleteClick(mEasyEditSpan); 2813 } 2814 } 2815 2816 @Override 2817 public void hide() { 2818 if (mEasyEditSpan != null) { 2819 mEasyEditSpan.setDeleteEnabled(false); 2820 } 2821 mOnDeleteListener = null; 2822 super.hide(); 2823 } 2824 2825 @Override 2826 protected int getTextOffset() { 2827 // Place the pop-up at the end of the span 2828 Editable editable = (Editable) mTextView.getText(); 2829 return editable.getSpanEnd(mEasyEditSpan); 2830 } 2831 2832 @Override 2833 protected int getVerticalLocalPosition(int line) { 2834 return mTextView.getLayout().getLineBottom(line); 2835 } 2836 2837 @Override 2838 protected int clipVertically(int positionY) { 2839 // As we display the pop-up below the span, no vertical clipping is required. 2840 return positionY; 2841 } 2842 } 2843 2844 private class PositionListener implements ViewTreeObserver.OnPreDrawListener { 2845 // 3 handles 2846 // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others) 2847 // 1 CursorAnchorInfoNotifier 2848 private final int MAXIMUM_NUMBER_OF_LISTENERS = 7; 2849 private TextViewPositionListener[] mPositionListeners = 2850 new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS]; 2851 private boolean mCanMove[] = new boolean[MAXIMUM_NUMBER_OF_LISTENERS]; 2852 private boolean mPositionHasChanged = true; 2853 // Absolute position of the TextView with respect to its parent window 2854 private int mPositionX, mPositionY; 2855 private int mNumberOfListeners; 2856 private boolean mScrollHasChanged; 2857 final int[] mTempCoords = new int[2]; 2858 2859 public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) { 2860 if (mNumberOfListeners == 0) { 2861 updatePosition(); 2862 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2863 vto.addOnPreDrawListener(this); 2864 } 2865 2866 int emptySlotIndex = -1; 2867 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2868 TextViewPositionListener listener = mPositionListeners[i]; 2869 if (listener == positionListener) { 2870 return; 2871 } else if (emptySlotIndex < 0 && listener == null) { 2872 emptySlotIndex = i; 2873 } 2874 } 2875 2876 mPositionListeners[emptySlotIndex] = positionListener; 2877 mCanMove[emptySlotIndex] = canMove; 2878 mNumberOfListeners++; 2879 } 2880 2881 public void removeSubscriber(TextViewPositionListener positionListener) { 2882 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2883 if (mPositionListeners[i] == positionListener) { 2884 mPositionListeners[i] = null; 2885 mNumberOfListeners--; 2886 break; 2887 } 2888 } 2889 2890 if (mNumberOfListeners == 0) { 2891 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2892 vto.removeOnPreDrawListener(this); 2893 } 2894 } 2895 2896 public int getPositionX() { 2897 return mPositionX; 2898 } 2899 2900 public int getPositionY() { 2901 return mPositionY; 2902 } 2903 2904 @Override 2905 public boolean onPreDraw() { 2906 updatePosition(); 2907 2908 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2909 if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) { 2910 TextViewPositionListener positionListener = mPositionListeners[i]; 2911 if (positionListener != null) { 2912 positionListener.updatePosition(mPositionX, mPositionY, 2913 mPositionHasChanged, mScrollHasChanged); 2914 } 2915 } 2916 } 2917 2918 mScrollHasChanged = false; 2919 return true; 2920 } 2921 2922 private void updatePosition() { 2923 mTextView.getLocationInWindow(mTempCoords); 2924 2925 mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY; 2926 2927 mPositionX = mTempCoords[0]; 2928 mPositionY = mTempCoords[1]; 2929 } 2930 2931 public void onScrollChanged() { 2932 mScrollHasChanged = true; 2933 } 2934 } 2935 2936 private abstract class PinnedPopupWindow implements TextViewPositionListener { 2937 protected PopupWindow mPopupWindow; 2938 protected ViewGroup mContentView; 2939 int mPositionX, mPositionY; 2940 int mClippingLimitLeft, mClippingLimitRight; 2941 2942 protected abstract void createPopupWindow(); 2943 protected abstract void initContentView(); 2944 protected abstract int getTextOffset(); 2945 protected abstract int getVerticalLocalPosition(int line); 2946 protected abstract int clipVertically(int positionY); 2947 2948 public PinnedPopupWindow() { 2949 createPopupWindow(); 2950 2951 mPopupWindow.setWindowLayoutType( 2952 WindowManager.LayoutParams.TYPE_APPLICATION_ABOVE_SUB_PANEL); 2953 mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 2954 mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 2955 2956 initContentView(); 2957 2958 LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2959 ViewGroup.LayoutParams.WRAP_CONTENT); 2960 mContentView.setLayoutParams(wrapContent); 2961 2962 mPopupWindow.setContentView(mContentView); 2963 } 2964 2965 public void show() { 2966 getPositionListener().addSubscriber(this, false /* offset is fixed */); 2967 2968 computeLocalPosition(); 2969 2970 final PositionListener positionListener = getPositionListener(); 2971 updatePosition(positionListener.getPositionX(), positionListener.getPositionY()); 2972 } 2973 2974 protected void measureContent() { 2975 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2976 mContentView.measure( 2977 View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, 2978 View.MeasureSpec.AT_MOST), 2979 View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, 2980 View.MeasureSpec.AT_MOST)); 2981 } 2982 2983 /* The popup window will be horizontally centered on the getTextOffset() and vertically 2984 * positioned according to viewportToContentHorizontalOffset. 2985 * 2986 * This method assumes that mContentView has properly been measured from its content. */ 2987 private void computeLocalPosition() { 2988 measureContent(); 2989 final int width = mContentView.getMeasuredWidth(); 2990 final int offset = getTextOffset(); 2991 mPositionX = (int) (mTextView.getLayout().getPrimaryHorizontal(offset) - width / 2.0f); 2992 mPositionX += mTextView.viewportToContentHorizontalOffset(); 2993 2994 final int line = mTextView.getLayout().getLineForOffset(offset); 2995 mPositionY = getVerticalLocalPosition(line); 2996 mPositionY += mTextView.viewportToContentVerticalOffset(); 2997 } 2998 2999 private void updatePosition(int parentPositionX, int parentPositionY) { 3000 int positionX = parentPositionX + mPositionX; 3001 int positionY = parentPositionY + mPositionY; 3002 3003 positionY = clipVertically(positionY); 3004 3005 // Horizontal clipping 3006 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3007 final int width = mContentView.getMeasuredWidth(); 3008 positionX = Math.min( 3009 displayMetrics.widthPixels - width + mClippingLimitRight, positionX); 3010 positionX = Math.max(-mClippingLimitLeft, positionX); 3011 3012 if (isShowing()) { 3013 mPopupWindow.update(positionX, positionY, -1, -1); 3014 } else { 3015 mPopupWindow.showAtLocation(mTextView, Gravity.NO_GRAVITY, 3016 positionX, positionY); 3017 } 3018 } 3019 3020 public void hide() { 3021 if (!isShowing()) { 3022 return; 3023 } 3024 mPopupWindow.dismiss(); 3025 getPositionListener().removeSubscriber(this); 3026 } 3027 3028 @Override 3029 public void updatePosition(int parentPositionX, int parentPositionY, 3030 boolean parentPositionChanged, boolean parentScrolled) { 3031 // Either parentPositionChanged or parentScrolled is true, check if still visible 3032 if (isShowing() && isOffsetVisible(getTextOffset())) { 3033 if (parentScrolled) computeLocalPosition(); 3034 updatePosition(parentPositionX, parentPositionY); 3035 } else { 3036 hide(); 3037 } 3038 } 3039 3040 public boolean isShowing() { 3041 return mPopupWindow.isShowing(); 3042 } 3043 } 3044 3045 private static final class SuggestionInfo { 3046 // Range of actual suggestion within mText 3047 int mSuggestionStart, mSuggestionEnd; 3048 3049 // The SuggestionSpan that this TextView represents 3050 final SuggestionSpanInfo mSuggestionSpanInfo = new SuggestionSpanInfo(); 3051 3052 // The index of this suggestion inside suggestionSpan 3053 int mSuggestionIndex; 3054 3055 final SpannableStringBuilder mText = new SpannableStringBuilder(); 3056 3057 void clear() { 3058 mSuggestionSpanInfo.clear(); 3059 mText.clear(); 3060 } 3061 3062 // Utility method to set attributes about a SuggestionSpan. 3063 void setSpanInfo(SuggestionSpan span, int spanStart, int spanEnd) { 3064 mSuggestionSpanInfo.mSuggestionSpan = span; 3065 mSuggestionSpanInfo.mSpanStart = spanStart; 3066 mSuggestionSpanInfo.mSpanEnd = spanEnd; 3067 } 3068 } 3069 3070 private static final class SuggestionSpanInfo { 3071 // The SuggestionSpan; 3072 @Nullable 3073 SuggestionSpan mSuggestionSpan; 3074 3075 // The SuggestionSpan start position 3076 int mSpanStart; 3077 3078 // The SuggestionSpan end position 3079 int mSpanEnd; 3080 3081 void clear() { 3082 mSuggestionSpan = null; 3083 } 3084 } 3085 3086 private class SuggestionHelper { 3087 private final Comparator<SuggestionSpan> mSuggestionSpanComparator = 3088 new SuggestionSpanComparator(); 3089 private final HashMap<SuggestionSpan, Integer> mSpansLengths = 3090 new HashMap<SuggestionSpan, Integer>(); 3091 3092 private class SuggestionSpanComparator implements Comparator<SuggestionSpan> { 3093 public int compare(SuggestionSpan span1, SuggestionSpan span2) { 3094 final int flag1 = span1.getFlags(); 3095 final int flag2 = span2.getFlags(); 3096 if (flag1 != flag2) { 3097 // The order here should match what is used in updateDrawState 3098 final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 3099 final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 3100 final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0; 3101 final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0; 3102 if (easy1 && !misspelled1) return -1; 3103 if (easy2 && !misspelled2) return 1; 3104 if (misspelled1) return -1; 3105 if (misspelled2) return 1; 3106 } 3107 3108 return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue(); 3109 } 3110 } 3111 3112 /** 3113 * Returns the suggestion spans that cover the current cursor position. The suggestion 3114 * spans are sorted according to the length of text that they are attached to. 3115 */ 3116 private SuggestionSpan[] getSortedSuggestionSpans() { 3117 int pos = mTextView.getSelectionStart(); 3118 Spannable spannable = (Spannable) mTextView.getText(); 3119 SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class); 3120 3121 mSpansLengths.clear(); 3122 for (SuggestionSpan suggestionSpan : suggestionSpans) { 3123 int start = spannable.getSpanStart(suggestionSpan); 3124 int end = spannable.getSpanEnd(suggestionSpan); 3125 mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start)); 3126 } 3127 3128 // The suggestions are sorted according to their types (easy correction first, then 3129 // misspelled) and to the length of the text that they cover (shorter first). 3130 Arrays.sort(suggestionSpans, mSuggestionSpanComparator); 3131 mSpansLengths.clear(); 3132 3133 return suggestionSpans; 3134 } 3135 3136 /** 3137 * Gets the SuggestionInfo list that contains suggestion information at the current cursor 3138 * position. 3139 * 3140 * @param suggestionInfos SuggestionInfo array the results will be set. 3141 * @param misspelledSpanInfo a struct the misspelled SuggestionSpan info will be set. 3142 * @return the number of suggestions actually fetched. 3143 */ 3144 public int getSuggestionInfo(SuggestionInfo[] suggestionInfos, 3145 @Nullable SuggestionSpanInfo misspelledSpanInfo) { 3146 final Spannable spannable = (Spannable) mTextView.getText(); 3147 final SuggestionSpan[] suggestionSpans = getSortedSuggestionSpans(); 3148 final int nbSpans = suggestionSpans.length; 3149 if (nbSpans == 0) return 0; 3150 3151 int numberOfSuggestions = 0; 3152 for (final SuggestionSpan suggestionSpan : suggestionSpans) { 3153 final int spanStart = spannable.getSpanStart(suggestionSpan); 3154 final int spanEnd = spannable.getSpanEnd(suggestionSpan); 3155 3156 if (misspelledSpanInfo != null 3157 && (suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) { 3158 misspelledSpanInfo.mSuggestionSpan = suggestionSpan; 3159 misspelledSpanInfo.mSpanStart = spanStart; 3160 misspelledSpanInfo.mSpanEnd = spanEnd; 3161 } 3162 3163 final String[] suggestions = suggestionSpan.getSuggestions(); 3164 final int nbSuggestions = suggestions.length; 3165 suggestionLoop: 3166 for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) { 3167 final String suggestion = suggestions[suggestionIndex]; 3168 for (int i = 0; i < numberOfSuggestions; i++) { 3169 final SuggestionInfo otherSuggestionInfo = suggestionInfos[i]; 3170 if (otherSuggestionInfo.mText.toString().equals(suggestion)) { 3171 final int otherSpanStart = 3172 otherSuggestionInfo.mSuggestionSpanInfo.mSpanStart; 3173 final int otherSpanEnd = 3174 otherSuggestionInfo.mSuggestionSpanInfo.mSpanEnd; 3175 if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) { 3176 continue suggestionLoop; 3177 } 3178 } 3179 } 3180 3181 SuggestionInfo suggestionInfo = suggestionInfos[numberOfSuggestions]; 3182 suggestionInfo.setSpanInfo(suggestionSpan, spanStart, spanEnd); 3183 suggestionInfo.mSuggestionIndex = suggestionIndex; 3184 suggestionInfo.mSuggestionStart = 0; 3185 suggestionInfo.mSuggestionEnd = suggestion.length(); 3186 suggestionInfo.mText.replace(0, suggestionInfo.mText.length(), suggestion); 3187 numberOfSuggestions++; 3188 if (numberOfSuggestions >= suggestionInfos.length) { 3189 return numberOfSuggestions; 3190 } 3191 } 3192 } 3193 return numberOfSuggestions; 3194 } 3195 } 3196 3197 @VisibleForTesting 3198 public class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener { 3199 private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE; 3200 3201 // Key of intent extras for inserting new word into user dictionary. 3202 private static final String USER_DICTIONARY_EXTRA_WORD = "word"; 3203 private static final String USER_DICTIONARY_EXTRA_LOCALE = "locale"; 3204 3205 private SuggestionInfo[] mSuggestionInfos; 3206 private int mNumberOfSuggestions; 3207 private boolean mCursorWasVisibleBeforeSuggestions; 3208 private boolean mIsShowingUp = false; 3209 private SuggestionAdapter mSuggestionsAdapter; 3210 private final TextAppearanceSpan mHighlightSpan = new TextAppearanceSpan( 3211 mTextView.getContext(), mTextView.mTextEditSuggestionHighlightStyle); 3212 private TextView mAddToDictionaryButton; 3213 private TextView mDeleteButton; 3214 private ListView mSuggestionListView; 3215 private final SuggestionSpanInfo mMisspelledSpanInfo = new SuggestionSpanInfo(); 3216 private int mContainerMarginWidth; 3217 private int mContainerMarginTop; 3218 3219 private class CustomPopupWindow extends PopupWindow { 3220 @Override 3221 public void dismiss() { 3222 if (!isShowing()) { 3223 return; 3224 } 3225 super.dismiss(); 3226 getPositionListener().removeSubscriber(SuggestionsPopupWindow.this); 3227 3228 // Safe cast since show() checks that mTextView.getText() is an Editable 3229 ((Spannable) mTextView.getText()).removeSpan(mSuggestionRangeSpan); 3230 3231 mTextView.setCursorVisible(mCursorWasVisibleBeforeSuggestions); 3232 if (hasInsertionController() && !extractedTextModeWillBeStarted()) { 3233 getInsertionController().show(); 3234 } 3235 } 3236 } 3237 3238 public SuggestionsPopupWindow() { 3239 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 3240 } 3241 3242 @Override 3243 protected void createPopupWindow() { 3244 mPopupWindow = new CustomPopupWindow(); 3245 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 3246 mPopupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT)); 3247 mPopupWindow.setFocusable(true); 3248 mPopupWindow.setClippingEnabled(false); 3249 } 3250 3251 @Override 3252 protected void initContentView() { 3253 final LayoutInflater inflater = (LayoutInflater) mTextView.getContext(). 3254 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 3255 final ViewGroup relativeLayout = (ViewGroup) inflater.inflate( 3256 mTextView.mTextEditSuggestionContainerLayout, null); 3257 3258 final LinearLayout suggestionWindowContainer = 3259 (LinearLayout) relativeLayout.findViewById( 3260 com.android.internal.R.id.suggestionWindowContainer); 3261 ViewGroup.MarginLayoutParams lp = 3262 (ViewGroup.MarginLayoutParams) suggestionWindowContainer.getLayoutParams(); 3263 mContainerMarginWidth = lp.leftMargin + lp.rightMargin; 3264 mContainerMarginTop = lp.topMargin; 3265 mClippingLimitLeft = lp.leftMargin; 3266 mClippingLimitRight = lp.rightMargin; 3267 3268 mSuggestionListView = (ListView) relativeLayout.findViewById( 3269 com.android.internal.R.id.suggestionContainer); 3270 3271 mSuggestionsAdapter = new SuggestionAdapter(); 3272 mSuggestionListView.setAdapter(mSuggestionsAdapter); 3273 mSuggestionListView.setOnItemClickListener(this); 3274 3275 // Inflate the suggestion items once and for all. 3276 mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS]; 3277 for (int i = 0; i < mSuggestionInfos.length; i++) { 3278 mSuggestionInfos[i] = new SuggestionInfo(); 3279 } 3280 3281 mContentView = relativeLayout; 3282 3283 mAddToDictionaryButton = (TextView) relativeLayout.findViewById( 3284 com.android.internal.R.id.addToDictionaryButton); 3285 mAddToDictionaryButton.setOnClickListener(new View.OnClickListener() { 3286 public void onClick(View v) { 3287 final Editable editable = (Editable) mTextView.getText(); 3288 final int spanStart = editable.getSpanStart( 3289 mMisspelledSpanInfo.mSuggestionSpan); 3290 final int spanEnd = editable.getSpanEnd(mMisspelledSpanInfo.mSuggestionSpan); 3291 final String originalText = TextUtils.substring(editable, spanStart, spanEnd); 3292 3293 final Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT); 3294 intent.putExtra(USER_DICTIONARY_EXTRA_WORD, originalText); 3295 intent.putExtra(USER_DICTIONARY_EXTRA_LOCALE, 3296 mTextView.getTextServicesLocale().toString()); 3297 intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); 3298 mTextView.getContext().startActivity(intent); 3299 // There is no way to know if the word was indeed added. Re-check. 3300 // TODO The ExtractEditText should remove the span in the original text instead 3301 editable.removeSpan(mMisspelledSpanInfo.mSuggestionSpan); 3302 Selection.setSelection(editable, spanEnd); 3303 updateSpellCheckSpans(spanStart, spanEnd, false); 3304 hideWithCleanUp(); 3305 } 3306 }); 3307 3308 mDeleteButton = (TextView) relativeLayout.findViewById( 3309 com.android.internal.R.id.deleteButton); 3310 mDeleteButton.setOnClickListener(new View.OnClickListener() { 3311 public void onClick(View v) { 3312 final Editable editable = (Editable) mTextView.getText(); 3313 3314 final int spanUnionStart = editable.getSpanStart(mSuggestionRangeSpan); 3315 int spanUnionEnd = editable.getSpanEnd(mSuggestionRangeSpan); 3316 if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) { 3317 // Do not leave two adjacent spaces after deletion, or one at beginning of 3318 // text 3319 if (spanUnionEnd < editable.length() && 3320 Character.isSpaceChar(editable.charAt(spanUnionEnd)) && 3321 (spanUnionStart == 0 || 3322 Character.isSpaceChar(editable.charAt(spanUnionStart - 1)))) { 3323 spanUnionEnd = spanUnionEnd + 1; 3324 } 3325 mTextView.deleteText_internal(spanUnionStart, spanUnionEnd); 3326 } 3327 hideWithCleanUp(); 3328 } 3329 }); 3330 3331 } 3332 3333 public boolean isShowingUp() { 3334 return mIsShowingUp; 3335 } 3336 3337 public void onParentLostFocus() { 3338 mIsShowingUp = false; 3339 } 3340 3341 private class SuggestionAdapter extends BaseAdapter { 3342 private LayoutInflater mInflater = (LayoutInflater) mTextView.getContext(). 3343 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 3344 3345 @Override 3346 public int getCount() { 3347 return mNumberOfSuggestions; 3348 } 3349 3350 @Override 3351 public Object getItem(int position) { 3352 return mSuggestionInfos[position]; 3353 } 3354 3355 @Override 3356 public long getItemId(int position) { 3357 return position; 3358 } 3359 3360 @Override 3361 public View getView(int position, View convertView, ViewGroup parent) { 3362 TextView textView = (TextView) convertView; 3363 3364 if (textView == null) { 3365 textView = (TextView) mInflater.inflate(mTextView.mTextEditSuggestionItemLayout, 3366 parent, false); 3367 } 3368 3369 final SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 3370 textView.setText(suggestionInfo.mText); 3371 return textView; 3372 } 3373 } 3374 3375 @VisibleForTesting 3376 public ViewGroup getContentViewForTesting() { 3377 return mContentView; 3378 } 3379 3380 @Override 3381 public void show() { 3382 if (!(mTextView.getText() instanceof Editable)) return; 3383 if (extractedTextModeWillBeStarted()) { 3384 return; 3385 } 3386 3387 if (updateSuggestions()) { 3388 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 3389 mTextView.setCursorVisible(false); 3390 mIsShowingUp = true; 3391 super.show(); 3392 } 3393 } 3394 3395 @Override 3396 protected void measureContent() { 3397 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3398 final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec( 3399 displayMetrics.widthPixels, View.MeasureSpec.AT_MOST); 3400 final int verticalMeasure = View.MeasureSpec.makeMeasureSpec( 3401 displayMetrics.heightPixels, View.MeasureSpec.AT_MOST); 3402 3403 int width = 0; 3404 View view = null; 3405 for (int i = 0; i < mNumberOfSuggestions; i++) { 3406 view = mSuggestionsAdapter.getView(i, view, mContentView); 3407 view.getLayoutParams().width = LayoutParams.WRAP_CONTENT; 3408 view.measure(horizontalMeasure, verticalMeasure); 3409 width = Math.max(width, view.getMeasuredWidth()); 3410 } 3411 3412 if (mAddToDictionaryButton.getVisibility() != View.GONE) { 3413 mAddToDictionaryButton.measure(horizontalMeasure, verticalMeasure); 3414 width = Math.max(width, mAddToDictionaryButton.getMeasuredWidth()); 3415 } 3416 3417 mDeleteButton.measure(horizontalMeasure, verticalMeasure); 3418 width = Math.max(width, mDeleteButton.getMeasuredWidth()); 3419 3420 width += mContainerMarginWidth; 3421 3422 // Enforce the width based on actual text widths 3423 mContentView.measure( 3424 View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY), 3425 verticalMeasure); 3426 3427 Drawable popupBackground = mPopupWindow.getBackground(); 3428 if (popupBackground != null) { 3429 if (mTempRect == null) mTempRect = new Rect(); 3430 popupBackground.getPadding(mTempRect); 3431 width += mTempRect.left + mTempRect.right; 3432 } 3433 mSuggestionListView.getLayoutParams().width = width; 3434 mPopupWindow.setWidth(width); 3435 } 3436 3437 @Override 3438 protected int getTextOffset() { 3439 return (mTextView.getSelectionStart() + mTextView.getSelectionStart()) / 2; 3440 } 3441 3442 @Override 3443 protected int getVerticalLocalPosition(int line) { 3444 return mTextView.getLayout().getLineBottom(line) - mContainerMarginTop; 3445 } 3446 3447 @Override 3448 protected int clipVertically(int positionY) { 3449 final int height = mContentView.getMeasuredHeight(); 3450 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3451 return Math.min(positionY, displayMetrics.heightPixels - height); 3452 } 3453 3454 private void hideWithCleanUp() { 3455 for (final SuggestionInfo info : mSuggestionInfos) { 3456 info.clear(); 3457 } 3458 mMisspelledSpanInfo.clear(); 3459 hide(); 3460 } 3461 3462 private boolean updateSuggestions() { 3463 Spannable spannable = (Spannable) mTextView.getText(); 3464 mNumberOfSuggestions = 3465 mSuggestionHelper.getSuggestionInfo(mSuggestionInfos, mMisspelledSpanInfo); 3466 if (mNumberOfSuggestions == 0 && mMisspelledSpanInfo.mSuggestionSpan == null) { 3467 return false; 3468 } 3469 3470 int spanUnionStart = mTextView.getText().length(); 3471 int spanUnionEnd = 0; 3472 3473 for (int i = 0; i < mNumberOfSuggestions; i++) { 3474 final SuggestionSpanInfo spanInfo = mSuggestionInfos[i].mSuggestionSpanInfo; 3475 spanUnionStart = Math.min(spanUnionStart, spanInfo.mSpanStart); 3476 spanUnionEnd = Math.max(spanUnionEnd, spanInfo.mSpanEnd); 3477 } 3478 if (mMisspelledSpanInfo.mSuggestionSpan != null) { 3479 spanUnionStart = Math.min(spanUnionStart, mMisspelledSpanInfo.mSpanStart); 3480 spanUnionEnd = Math.max(spanUnionEnd, mMisspelledSpanInfo.mSpanEnd); 3481 } 3482 3483 for (int i = 0; i < mNumberOfSuggestions; i++) { 3484 highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd); 3485 } 3486 3487 // Make "Add to dictionary" item visible if there is a span with the misspelled flag 3488 int addToDictionaryButtonVisibility = View.GONE; 3489 if (mMisspelledSpanInfo.mSuggestionSpan != null) { 3490 if (mMisspelledSpanInfo.mSpanStart >= 0 3491 && mMisspelledSpanInfo.mSpanEnd > mMisspelledSpanInfo.mSpanStart) { 3492 addToDictionaryButtonVisibility = View.VISIBLE; 3493 } 3494 } 3495 mAddToDictionaryButton.setVisibility(addToDictionaryButtonVisibility); 3496 3497 if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan(); 3498 final int underlineColor; 3499 if (mNumberOfSuggestions != 0) { 3500 underlineColor = 3501 mSuggestionInfos[0].mSuggestionSpanInfo.mSuggestionSpan.getUnderlineColor(); 3502 } else { 3503 underlineColor = mMisspelledSpanInfo.mSuggestionSpan.getUnderlineColor(); 3504 } 3505 3506 if (underlineColor == 0) { 3507 // Fallback on the default highlight color when the first span does not provide one 3508 mSuggestionRangeSpan.setBackgroundColor(mTextView.mHighlightColor); 3509 } else { 3510 final float BACKGROUND_TRANSPARENCY = 0.4f; 3511 final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY); 3512 mSuggestionRangeSpan.setBackgroundColor( 3513 (underlineColor & 0x00FFFFFF) + (newAlpha << 24)); 3514 } 3515 spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd, 3516 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 3517 3518 mSuggestionsAdapter.notifyDataSetChanged(); 3519 return true; 3520 } 3521 3522 private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart, 3523 int unionEnd) { 3524 final Spannable text = (Spannable) mTextView.getText(); 3525 final int spanStart = suggestionInfo.mSuggestionSpanInfo.mSpanStart; 3526 final int spanEnd = suggestionInfo.mSuggestionSpanInfo.mSpanEnd; 3527 3528 // Adjust the start/end of the suggestion span 3529 suggestionInfo.mSuggestionStart = spanStart - unionStart; 3530 suggestionInfo.mSuggestionEnd = suggestionInfo.mSuggestionStart 3531 + suggestionInfo.mText.length(); 3532 3533 suggestionInfo.mText.setSpan(mHighlightSpan, 0, suggestionInfo.mText.length(), 3534 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 3535 3536 // Add the text before and after the span. 3537 final String textAsString = text.toString(); 3538 suggestionInfo.mText.insert(0, textAsString.substring(unionStart, spanStart)); 3539 suggestionInfo.mText.append(textAsString.substring(spanEnd, unionEnd)); 3540 } 3541 3542 @Override 3543 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 3544 SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 3545 replaceWithSuggestion(suggestionInfo); 3546 hideWithCleanUp(); 3547 } 3548 } 3549 3550 /** 3551 * An ActionMode Callback class that is used to provide actions while in text insertion or 3552 * selection mode. 3553 * 3554 * The default callback provides a subset of Select All, Cut, Copy, Paste, Share and Replace 3555 * actions, depending on which of these this TextView supports and the current selection. 3556 */ 3557 private class TextActionModeCallback extends ActionMode.Callback2 { 3558 private final Path mSelectionPath = new Path(); 3559 private final RectF mSelectionBounds = new RectF(); 3560 private final boolean mHasSelection; 3561 3562 private int mHandleHeight; 3563 3564 public TextActionModeCallback(boolean hasSelection) { 3565 mHasSelection = hasSelection; 3566 if (mHasSelection) { 3567 SelectionModifierCursorController selectionController = getSelectionController(); 3568 if (selectionController.mStartHandle == null) { 3569 // As these are for initializing selectionController, hide() must be called. 3570 selectionController.initDrawables(); 3571 selectionController.initHandles(); 3572 selectionController.hide(); 3573 } 3574 mHandleHeight = Math.max( 3575 mSelectHandleLeft.getMinimumHeight(), 3576 mSelectHandleRight.getMinimumHeight()); 3577 } else { 3578 InsertionPointCursorController insertionController = getInsertionController(); 3579 if (insertionController != null) { 3580 insertionController.getHandle(); 3581 mHandleHeight = mSelectHandleCenter.getMinimumHeight(); 3582 } 3583 } 3584 } 3585 3586 @Override 3587 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 3588 mode.setTitle(null); 3589 mode.setSubtitle(null); 3590 mode.setTitleOptionalHint(true); 3591 populateMenuWithItems(menu); 3592 3593 Callback customCallback = getCustomCallback(); 3594 if (customCallback != null) { 3595 if (!customCallback.onCreateActionMode(mode, menu)) { 3596 // The custom mode can choose to cancel the action mode, dismiss selection. 3597 Selection.setSelection((Spannable) mTextView.getText(), 3598 mTextView.getSelectionEnd()); 3599 return false; 3600 } 3601 } 3602 3603 if (mTextView.canProcessText()) { 3604 mProcessTextIntentActionsHandler.onInitializeMenu(menu); 3605 } 3606 3607 if (menu.hasVisibleItems() || mode.getCustomView() != null) { 3608 return true; 3609 } else { 3610 return false; 3611 } 3612 } 3613 3614 private Callback getCustomCallback() { 3615 return mHasSelection 3616 ? mCustomSelectionActionModeCallback 3617 : mCustomInsertionActionModeCallback; 3618 } 3619 3620 private void populateMenuWithItems(Menu menu) { 3621 if (mTextView.canCut()) { 3622 menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, 3623 com.android.internal.R.string.cut). 3624 setAlphabeticShortcut('x'). 3625 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3626 } 3627 3628 if (mTextView.canCopy()) { 3629 menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, 3630 com.android.internal.R.string.copy). 3631 setAlphabeticShortcut('c'). 3632 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3633 } 3634 3635 if (mTextView.canPaste()) { 3636 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, 3637 com.android.internal.R.string.paste). 3638 setAlphabeticShortcut('v'). 3639 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3640 } 3641 3642 if (mTextView.canShare()) { 3643 menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, 3644 com.android.internal.R.string.share). 3645 setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3646 } 3647 3648 updateSelectAllItem(menu); 3649 updateReplaceItem(menu); 3650 } 3651 3652 @Override 3653 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 3654 updateSelectAllItem(menu); 3655 updateReplaceItem(menu); 3656 3657 Callback customCallback = getCustomCallback(); 3658 if (customCallback != null) { 3659 return customCallback.onPrepareActionMode(mode, menu); 3660 } 3661 return true; 3662 } 3663 3664 private void updateSelectAllItem(Menu menu) { 3665 boolean canSelectAll = mTextView.canSelectAllText(); 3666 boolean selectAllItemExists = menu.findItem(TextView.ID_SELECT_ALL) != null; 3667 if (canSelectAll && !selectAllItemExists) { 3668 menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, 3669 com.android.internal.R.string.selectAll) 3670 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3671 } else if (!canSelectAll && selectAllItemExists) { 3672 menu.removeItem(TextView.ID_SELECT_ALL); 3673 } 3674 } 3675 3676 private void updateReplaceItem(Menu menu) { 3677 boolean canReplace = mTextView.isSuggestionsEnabled() && shouldOfferToShowSuggestions(); 3678 boolean replaceItemExists = menu.findItem(TextView.ID_REPLACE) != null; 3679 if (canReplace && !replaceItemExists) { 3680 menu.add(Menu.NONE, TextView.ID_REPLACE, MENU_ITEM_ORDER_REPLACE, 3681 com.android.internal.R.string.replace) 3682 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3683 } else if (!canReplace && replaceItemExists) { 3684 menu.removeItem(TextView.ID_REPLACE); 3685 } 3686 } 3687 3688 @Override 3689 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 3690 if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { 3691 return true; 3692 } 3693 Callback customCallback = getCustomCallback(); 3694 if (customCallback != null && customCallback.onActionItemClicked(mode, item)) { 3695 return true; 3696 } 3697 return mTextView.onTextContextMenuItem(item.getItemId()); 3698 } 3699 3700 @Override 3701 public void onDestroyActionMode(ActionMode mode) { 3702 Callback customCallback = getCustomCallback(); 3703 if (customCallback != null) { 3704 customCallback.onDestroyActionMode(mode); 3705 } 3706 3707 if (!mPreserveSelection) { 3708 /* 3709 * Leave current selection when we tentatively destroy action mode for the 3710 * selection. If we're detaching from a window, we'll bring back the selection 3711 * mode when (if) we get reattached. 3712 */ 3713 Selection.setSelection((Spannable) mTextView.getText(), 3714 mTextView.getSelectionEnd()); 3715 } 3716 3717 if (mSelectionModifierCursorController != null) { 3718 mSelectionModifierCursorController.hide(); 3719 } 3720 3721 mTextActionMode = null; 3722 } 3723 3724 @Override 3725 public void onGetContentRect(ActionMode mode, View view, Rect outRect) { 3726 if (!view.equals(mTextView) || mTextView.getLayout() == null) { 3727 super.onGetContentRect(mode, view, outRect); 3728 return; 3729 } 3730 if (mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 3731 // We have a selection. 3732 mSelectionPath.reset(); 3733 mTextView.getLayout().getSelectionPath( 3734 mTextView.getSelectionStart(), mTextView.getSelectionEnd(), mSelectionPath); 3735 mSelectionPath.computeBounds(mSelectionBounds, true); 3736 mSelectionBounds.bottom += mHandleHeight; 3737 } else if (mCursorCount == 2) { 3738 // We have a split cursor. In this case, we take the rectangle that includes both 3739 // parts of the cursor to ensure we don't obscure either of them. 3740 Rect firstCursorBounds = mCursorDrawable[0].getBounds(); 3741 Rect secondCursorBounds = mCursorDrawable[1].getBounds(); 3742 mSelectionBounds.set( 3743 Math.min(firstCursorBounds.left, secondCursorBounds.left), 3744 Math.min(firstCursorBounds.top, secondCursorBounds.top), 3745 Math.max(firstCursorBounds.right, secondCursorBounds.right), 3746 Math.max(firstCursorBounds.bottom, secondCursorBounds.bottom) 3747 + mHandleHeight); 3748 } else { 3749 // We have a single cursor. 3750 Layout layout = getActiveLayout(); 3751 int line = layout.getLineForOffset(mTextView.getSelectionStart()); 3752 float primaryHorizontal = 3753 layout.getPrimaryHorizontal(mTextView.getSelectionStart()); 3754 mSelectionBounds.set( 3755 primaryHorizontal, 3756 layout.getLineTop(line), 3757 primaryHorizontal, 3758 layout.getLineTop(line + 1) + mHandleHeight); 3759 } 3760 // Take TextView's padding and scroll into account. 3761 int textHorizontalOffset = mTextView.viewportToContentHorizontalOffset(); 3762 int textVerticalOffset = mTextView.viewportToContentVerticalOffset(); 3763 outRect.set( 3764 (int) Math.floor(mSelectionBounds.left + textHorizontalOffset), 3765 (int) Math.floor(mSelectionBounds.top + textVerticalOffset), 3766 (int) Math.ceil(mSelectionBounds.right + textHorizontalOffset), 3767 (int) Math.ceil(mSelectionBounds.bottom + textVerticalOffset)); 3768 } 3769 } 3770 3771 /** 3772 * A listener to call {@link InputMethodManager#updateCursorAnchorInfo(View, CursorAnchorInfo)} 3773 * while the input method is requesting the cursor/anchor position. Does nothing as long as 3774 * {@link InputMethodManager#isWatchingCursor(View)} returns false. 3775 */ 3776 private final class CursorAnchorInfoNotifier implements TextViewPositionListener { 3777 final CursorAnchorInfo.Builder mSelectionInfoBuilder = new CursorAnchorInfo.Builder(); 3778 final int[] mTmpIntOffset = new int[2]; 3779 final Matrix mViewToScreenMatrix = new Matrix(); 3780 3781 @Override 3782 public void updatePosition(int parentPositionX, int parentPositionY, 3783 boolean parentPositionChanged, boolean parentScrolled) { 3784 final InputMethodState ims = mInputMethodState; 3785 if (ims == null || ims.mBatchEditNesting > 0) { 3786 return; 3787 } 3788 final InputMethodManager imm = InputMethodManager.peekInstance(); 3789 if (null == imm) { 3790 return; 3791 } 3792 if (!imm.isActive(mTextView)) { 3793 return; 3794 } 3795 // Skip if the IME has not requested the cursor/anchor position. 3796 if (!imm.isCursorAnchorInfoEnabled()) { 3797 return; 3798 } 3799 Layout layout = mTextView.getLayout(); 3800 if (layout == null) { 3801 return; 3802 } 3803 3804 final CursorAnchorInfo.Builder builder = mSelectionInfoBuilder; 3805 builder.reset(); 3806 3807 final int selectionStart = mTextView.getSelectionStart(); 3808 builder.setSelectionRange(selectionStart, mTextView.getSelectionEnd()); 3809 3810 // Construct transformation matrix from view local coordinates to screen coordinates. 3811 mViewToScreenMatrix.set(mTextView.getMatrix()); 3812 mTextView.getLocationOnScreen(mTmpIntOffset); 3813 mViewToScreenMatrix.postTranslate(mTmpIntOffset[0], mTmpIntOffset[1]); 3814 builder.setMatrix(mViewToScreenMatrix); 3815 3816 final float viewportToContentHorizontalOffset = 3817 mTextView.viewportToContentHorizontalOffset(); 3818 final float viewportToContentVerticalOffset = 3819 mTextView.viewportToContentVerticalOffset(); 3820 3821 final CharSequence text = mTextView.getText(); 3822 if (text instanceof Spannable) { 3823 final Spannable sp = (Spannable) text; 3824 int composingTextStart = EditableInputConnection.getComposingSpanStart(sp); 3825 int composingTextEnd = EditableInputConnection.getComposingSpanEnd(sp); 3826 if (composingTextEnd < composingTextStart) { 3827 final int temp = composingTextEnd; 3828 composingTextEnd = composingTextStart; 3829 composingTextStart = temp; 3830 } 3831 final boolean hasComposingText = 3832 (0 <= composingTextStart) && (composingTextStart < composingTextEnd); 3833 if (hasComposingText) { 3834 final CharSequence composingText = text.subSequence(composingTextStart, 3835 composingTextEnd); 3836 builder.setComposingText(composingTextStart, composingText); 3837 3838 final int minLine = layout.getLineForOffset(composingTextStart); 3839 final int maxLine = layout.getLineForOffset(composingTextEnd - 1); 3840 for (int line = minLine; line <= maxLine; ++line) { 3841 final int lineStart = layout.getLineStart(line); 3842 final int lineEnd = layout.getLineEnd(line); 3843 final int offsetStart = Math.max(lineStart, composingTextStart); 3844 final int offsetEnd = Math.min(lineEnd, composingTextEnd); 3845 final boolean ltrLine = 3846 layout.getParagraphDirection(line) == Layout.DIR_LEFT_TO_RIGHT; 3847 final float[] widths = new float[offsetEnd - offsetStart]; 3848 layout.getPaint().getTextWidths(text, offsetStart, offsetEnd, widths); 3849 final float top = layout.getLineTop(line); 3850 final float bottom = layout.getLineBottom(line); 3851 for (int offset = offsetStart; offset < offsetEnd; ++offset) { 3852 final float charWidth = widths[offset - offsetStart]; 3853 final boolean isRtl = layout.isRtlCharAt(offset); 3854 final float primary = layout.getPrimaryHorizontal(offset); 3855 final float secondary = layout.getSecondaryHorizontal(offset); 3856 // TODO: This doesn't work perfectly for text with custom styles and 3857 // TAB chars. 3858 final float left; 3859 final float right; 3860 if (ltrLine) { 3861 if (isRtl) { 3862 left = secondary - charWidth; 3863 right = secondary; 3864 } else { 3865 left = primary; 3866 right = primary + charWidth; 3867 } 3868 } else { 3869 if (!isRtl) { 3870 left = secondary; 3871 right = secondary + charWidth; 3872 } else { 3873 left = primary - charWidth; 3874 right = primary; 3875 } 3876 } 3877 // TODO: Check top-right and bottom-left as well. 3878 final float localLeft = left + viewportToContentHorizontalOffset; 3879 final float localRight = right + viewportToContentHorizontalOffset; 3880 final float localTop = top + viewportToContentVerticalOffset; 3881 final float localBottom = bottom + viewportToContentVerticalOffset; 3882 final boolean isTopLeftVisible = isPositionVisible(localLeft, localTop); 3883 final boolean isBottomRightVisible = 3884 isPositionVisible(localRight, localBottom); 3885 int characterBoundsFlags = 0; 3886 if (isTopLeftVisible || isBottomRightVisible) { 3887 characterBoundsFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; 3888 } 3889 if (!isTopLeftVisible || !isBottomRightVisible) { 3890 characterBoundsFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; 3891 } 3892 if (isRtl) { 3893 characterBoundsFlags |= CursorAnchorInfo.FLAG_IS_RTL; 3894 } 3895 // Here offset is the index in Java chars. 3896 builder.addCharacterBounds(offset, localLeft, localTop, localRight, 3897 localBottom, characterBoundsFlags); 3898 } 3899 } 3900 } 3901 } 3902 3903 // Treat selectionStart as the insertion point. 3904 if (0 <= selectionStart) { 3905 final int offset = selectionStart; 3906 final int line = layout.getLineForOffset(offset); 3907 final float insertionMarkerX = layout.getPrimaryHorizontal(offset) 3908 + viewportToContentHorizontalOffset; 3909 final float insertionMarkerTop = layout.getLineTop(line) 3910 + viewportToContentVerticalOffset; 3911 final float insertionMarkerBaseline = layout.getLineBaseline(line) 3912 + viewportToContentVerticalOffset; 3913 final float insertionMarkerBottom = layout.getLineBottom(line) 3914 + viewportToContentVerticalOffset; 3915 final boolean isTopVisible = 3916 isPositionVisible(insertionMarkerX, insertionMarkerTop); 3917 final boolean isBottomVisible = 3918 isPositionVisible(insertionMarkerX, insertionMarkerBottom); 3919 int insertionMarkerFlags = 0; 3920 if (isTopVisible || isBottomVisible) { 3921 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; 3922 } 3923 if (!isTopVisible || !isBottomVisible) { 3924 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; 3925 } 3926 if (layout.isRtlCharAt(offset)) { 3927 insertionMarkerFlags |= CursorAnchorInfo.FLAG_IS_RTL; 3928 } 3929 builder.setInsertionMarkerLocation(insertionMarkerX, insertionMarkerTop, 3930 insertionMarkerBaseline, insertionMarkerBottom, insertionMarkerFlags); 3931 } 3932 3933 imm.updateCursorAnchorInfo(mTextView, builder.build()); 3934 } 3935 } 3936 3937 @VisibleForTesting 3938 public abstract class HandleView extends View implements TextViewPositionListener { 3939 protected Drawable mDrawable; 3940 protected Drawable mDrawableLtr; 3941 protected Drawable mDrawableRtl; 3942 private final PopupWindow mContainer; 3943 // Position with respect to the parent TextView 3944 private int mPositionX, mPositionY; 3945 private boolean mIsDragging; 3946 // Offset from touch position to mPosition 3947 private float mTouchToWindowOffsetX, mTouchToWindowOffsetY; 3948 protected int mHotspotX; 3949 protected int mHorizontalGravity; 3950 // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up 3951 private float mTouchOffsetY; 3952 // Where the touch position should be on the handle to ensure a maximum cursor visibility 3953 private float mIdealVerticalOffset; 3954 // Parent's (TextView) previous position in window 3955 private int mLastParentX, mLastParentY; 3956 // Previous text character offset 3957 protected int mPreviousOffset = -1; 3958 // Previous text character offset 3959 private boolean mPositionHasChanged = true; 3960 // Minimum touch target size for handles 3961 private int mMinSize; 3962 // Indicates the line of text that the handle is on. 3963 protected int mPrevLine = UNSET_LINE; 3964 // Indicates the line of text that the user was touching. This can differ from mPrevLine 3965 // when selecting text when the handles jump to the end / start of words which may be on 3966 // a different line. 3967 protected int mPreviousLineTouched = UNSET_LINE; 3968 3969 private HandleView(Drawable drawableLtr, Drawable drawableRtl, final int id) { 3970 super(mTextView.getContext()); 3971 setId(id); 3972 mContainer = new PopupWindow(mTextView.getContext(), null, 3973 com.android.internal.R.attr.textSelectHandleWindowStyle); 3974 mContainer.setSplitTouchEnabled(true); 3975 mContainer.setClippingEnabled(false); 3976 mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 3977 mContainer.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 3978 mContainer.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 3979 mContainer.setContentView(this); 3980 3981 mDrawableLtr = drawableLtr; 3982 mDrawableRtl = drawableRtl; 3983 mMinSize = mTextView.getContext().getResources().getDimensionPixelSize( 3984 com.android.internal.R.dimen.text_handle_min_size); 3985 3986 updateDrawable(); 3987 3988 final int handleHeight = getPreferredHeight(); 3989 mTouchOffsetY = -0.3f * handleHeight; 3990 mIdealVerticalOffset = 0.7f * handleHeight; 3991 } 3992 3993 public float getIdealVerticalOffset() { 3994 return mIdealVerticalOffset; 3995 } 3996 3997 protected void updateDrawable() { 3998 if (mIsDragging) { 3999 // Don't update drawable during dragging. 4000 return; 4001 } 4002 final int offset = getCurrentCursorOffset(); 4003 final boolean isRtlCharAtOffset = mTextView.getLayout().isRtlCharAt(offset); 4004 final Drawable oldDrawable = mDrawable; 4005 mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr; 4006 mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset); 4007 mHorizontalGravity = getHorizontalGravity(isRtlCharAtOffset); 4008 final Layout layout = mTextView.getLayout(); 4009 if (layout != null && oldDrawable != mDrawable && isShowing()) { 4010 // Update popup window position. 4011 mPositionX = getCursorHorizontalPosition(layout, offset) - mHotspotX - 4012 getHorizontalOffset() + getCursorOffset(); 4013 mPositionX += mTextView.viewportToContentHorizontalOffset(); 4014 mPositionHasChanged = true; 4015 updatePosition(mLastParentX, mLastParentY, false, false); 4016 postInvalidate(); 4017 } 4018 } 4019 4020 protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun); 4021 protected abstract int getHorizontalGravity(boolean isRtlRun); 4022 4023 // Touch-up filter: number of previous positions remembered 4024 private static final int HISTORY_SIZE = 5; 4025 private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150; 4026 private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350; 4027 private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; 4028 private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; 4029 private int mPreviousOffsetIndex = 0; 4030 private int mNumberPreviousOffsets = 0; 4031 4032 private void startTouchUpFilter(int offset) { 4033 mNumberPreviousOffsets = 0; 4034 addPositionToTouchUpFilter(offset); 4035 } 4036 4037 private void addPositionToTouchUpFilter(int offset) { 4038 mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; 4039 mPreviousOffsets[mPreviousOffsetIndex] = offset; 4040 mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); 4041 mNumberPreviousOffsets++; 4042 } 4043 4044 private void filterOnTouchUp() { 4045 final long now = SystemClock.uptimeMillis(); 4046 int i = 0; 4047 int index = mPreviousOffsetIndex; 4048 final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); 4049 while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) { 4050 i++; 4051 index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; 4052 } 4053 4054 if (i > 0 && i < iMax && 4055 (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) { 4056 positionAtCursorOffset(mPreviousOffsets[index], false); 4057 } 4058 } 4059 4060 public boolean offsetHasBeenChanged() { 4061 return mNumberPreviousOffsets > 1; 4062 } 4063 4064 @Override 4065 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4066 setMeasuredDimension(getPreferredWidth(), getPreferredHeight()); 4067 } 4068 4069 private int getPreferredWidth() { 4070 return Math.max(mDrawable.getIntrinsicWidth(), mMinSize); 4071 } 4072 4073 private int getPreferredHeight() { 4074 return Math.max(mDrawable.getIntrinsicHeight(), mMinSize); 4075 } 4076 4077 public void show() { 4078 if (isShowing()) return; 4079 4080 getPositionListener().addSubscriber(this, true /* local position may change */); 4081 4082 // Make sure the offset is always considered new, even when focusing at same position 4083 mPreviousOffset = -1; 4084 positionAtCursorOffset(getCurrentCursorOffset(), false); 4085 } 4086 4087 protected void dismiss() { 4088 mIsDragging = false; 4089 mContainer.dismiss(); 4090 onDetached(); 4091 } 4092 4093 public void hide() { 4094 dismiss(); 4095 4096 getPositionListener().removeSubscriber(this); 4097 } 4098 4099 public boolean isShowing() { 4100 return mContainer.isShowing(); 4101 } 4102 4103 private boolean isVisible() { 4104 // Always show a dragging handle. 4105 if (mIsDragging) { 4106 return true; 4107 } 4108 4109 if (mTextView.isInBatchEditMode()) { 4110 return false; 4111 } 4112 4113 return isPositionVisible(mPositionX + mHotspotX + getHorizontalOffset(), mPositionY); 4114 } 4115 4116 public abstract int getCurrentCursorOffset(); 4117 4118 protected abstract void updateSelection(int offset); 4119 4120 public abstract void updatePosition(float x, float y); 4121 4122 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 4123 // A HandleView relies on the layout, which may be nulled by external methods 4124 Layout layout = mTextView.getLayout(); 4125 if (layout == null) { 4126 // Will update controllers' state, hiding them and stopping selection mode if needed 4127 prepareCursorControllers(); 4128 return; 4129 } 4130 layout = getActiveLayout(); 4131 4132 boolean offsetChanged = offset != mPreviousOffset; 4133 if (offsetChanged || parentScrolled) { 4134 if (offsetChanged) { 4135 updateSelection(offset); 4136 addPositionToTouchUpFilter(offset); 4137 } 4138 final int line = layout.getLineForOffset(offset); 4139 mPrevLine = line; 4140 4141 mPositionX = getCursorHorizontalPosition(layout, offset) - mHotspotX - 4142 getHorizontalOffset() + getCursorOffset(); 4143 mPositionY = layout.getLineBottom(line); 4144 4145 // Take TextView's padding and scroll into account. 4146 mPositionX += mTextView.viewportToContentHorizontalOffset(); 4147 mPositionY += mTextView.viewportToContentVerticalOffset(); 4148 4149 mPreviousOffset = offset; 4150 mPositionHasChanged = true; 4151 } 4152 } 4153 4154 /** 4155 * Return the clamped horizontal position for the first cursor. 4156 * 4157 * @param layout Text layout. 4158 * @param offset Character offset for the cursor. 4159 * @return The clamped horizontal position for the cursor. 4160 */ 4161 int getCursorHorizontalPosition(Layout layout, int offset) { 4162 return (int) (layout.getPrimaryHorizontal(offset) - 0.5f); 4163 } 4164 4165 public void updatePosition(int parentPositionX, int parentPositionY, 4166 boolean parentPositionChanged, boolean parentScrolled) { 4167 positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled); 4168 if (parentPositionChanged || mPositionHasChanged) { 4169 if (mIsDragging) { 4170 // Update touchToWindow offset in case of parent scrolling while dragging 4171 if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) { 4172 mTouchToWindowOffsetX += parentPositionX - mLastParentX; 4173 mTouchToWindowOffsetY += parentPositionY - mLastParentY; 4174 mLastParentX = parentPositionX; 4175 mLastParentY = parentPositionY; 4176 } 4177 4178 onHandleMoved(); 4179 } 4180 4181 if (isVisible()) { 4182 // Transform to the window coordinates to follow the view tranformation. 4183 final int[] pts = { mPositionX + mHotspotX + getHorizontalOffset(), mPositionY}; 4184 mTextView.transformFromViewToWindowSpace(pts); 4185 pts[0] -= mHotspotX + getHorizontalOffset(); 4186 4187 if (isShowing()) { 4188 mContainer.update(pts[0], pts[1], -1, -1); 4189 } else { 4190 mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, pts[0], pts[1]); 4191 } 4192 } else { 4193 if (isShowing()) { 4194 dismiss(); 4195 } 4196 } 4197 4198 mPositionHasChanged = false; 4199 } 4200 } 4201 4202 @Override 4203 protected void onDraw(Canvas c) { 4204 final int drawWidth = mDrawable.getIntrinsicWidth(); 4205 final int left = getHorizontalOffset(); 4206 4207 mDrawable.setBounds(left, 0, left + drawWidth, mDrawable.getIntrinsicHeight()); 4208 mDrawable.draw(c); 4209 } 4210 4211 private int getHorizontalOffset() { 4212 final int width = getPreferredWidth(); 4213 final int drawWidth = mDrawable.getIntrinsicWidth(); 4214 final int left; 4215 switch (mHorizontalGravity) { 4216 case Gravity.LEFT: 4217 left = 0; 4218 break; 4219 default: 4220 case Gravity.CENTER: 4221 left = (width - drawWidth) / 2; 4222 break; 4223 case Gravity.RIGHT: 4224 left = width - drawWidth; 4225 break; 4226 } 4227 return left; 4228 } 4229 4230 protected int getCursorOffset() { 4231 return 0; 4232 } 4233 4234 @Override 4235 public boolean onTouchEvent(MotionEvent ev) { 4236 updateFloatingToolbarVisibility(ev); 4237 4238 switch (ev.getActionMasked()) { 4239 case MotionEvent.ACTION_DOWN: { 4240 startTouchUpFilter(getCurrentCursorOffset()); 4241 mTouchToWindowOffsetX = ev.getRawX() - mPositionX; 4242 mTouchToWindowOffsetY = ev.getRawY() - mPositionY; 4243 4244 final PositionListener positionListener = getPositionListener(); 4245 mLastParentX = positionListener.getPositionX(); 4246 mLastParentY = positionListener.getPositionY(); 4247 mIsDragging = true; 4248 mPreviousLineTouched = UNSET_LINE; 4249 break; 4250 } 4251 4252 case MotionEvent.ACTION_MOVE: { 4253 final float rawX = ev.getRawX(); 4254 final float rawY = ev.getRawY(); 4255 4256 // Vertical hysteresis: vertical down movement tends to snap to ideal offset 4257 final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY; 4258 final float currentVerticalOffset = rawY - mPositionY - mLastParentY; 4259 float newVerticalOffset; 4260 if (previousVerticalOffset < mIdealVerticalOffset) { 4261 newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset); 4262 newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset); 4263 } else { 4264 newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset); 4265 newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset); 4266 } 4267 mTouchToWindowOffsetY = newVerticalOffset + mLastParentY; 4268 4269 final float newPosX = 4270 rawX - mTouchToWindowOffsetX + mHotspotX + getHorizontalOffset(); 4271 final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY; 4272 4273 updatePosition(newPosX, newPosY); 4274 break; 4275 } 4276 4277 case MotionEvent.ACTION_UP: 4278 filterOnTouchUp(); 4279 mIsDragging = false; 4280 updateDrawable(); 4281 break; 4282 4283 case MotionEvent.ACTION_CANCEL: 4284 mIsDragging = false; 4285 updateDrawable(); 4286 break; 4287 } 4288 return true; 4289 } 4290 4291 public boolean isDragging() { 4292 return mIsDragging; 4293 } 4294 4295 void onHandleMoved() {} 4296 4297 public void onDetached() {} 4298 } 4299 4300 /** 4301 * Returns the active layout (hint or text layout). Note that the text layout can be null. 4302 */ 4303 private Layout getActiveLayout() { 4304 Layout layout = mTextView.getLayout(); 4305 Layout hintLayout = mTextView.getHintLayout(); 4306 if (TextUtils.isEmpty(layout.getText()) && hintLayout != null && 4307 !TextUtils.isEmpty(hintLayout.getText())) { 4308 layout = hintLayout; 4309 } 4310 return layout; 4311 } 4312 4313 private class InsertionHandleView extends HandleView { 4314 private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000; 4315 private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds 4316 4317 // Used to detect taps on the insertion handle, which will affect the insertion action mode 4318 private float mDownPositionX, mDownPositionY; 4319 private Runnable mHider; 4320 4321 public InsertionHandleView(Drawable drawable) { 4322 super(drawable, drawable, com.android.internal.R.id.insertion_handle); 4323 } 4324 4325 @Override 4326 public void show() { 4327 super.show(); 4328 4329 final long durationSinceCutOrCopy = 4330 SystemClock.uptimeMillis() - TextView.sLastCutCopyOrTextChangedTime; 4331 4332 // Cancel the single tap delayed runnable. 4333 if (mInsertionActionModeRunnable != null 4334 && ((mTapState == TAP_STATE_DOUBLE_TAP) 4335 || (mTapState == TAP_STATE_TRIPLE_CLICK) 4336 || isCursorInsideEasyCorrectionSpan())) { 4337 mTextView.removeCallbacks(mInsertionActionModeRunnable); 4338 } 4339 4340 // Prepare and schedule the single tap runnable to run exactly after the double tap 4341 // timeout has passed. 4342 if ((mTapState != TAP_STATE_DOUBLE_TAP) && (mTapState != TAP_STATE_TRIPLE_CLICK) 4343 && !isCursorInsideEasyCorrectionSpan() 4344 && (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION)) { 4345 if (mTextActionMode == null) { 4346 if (mInsertionActionModeRunnable == null) { 4347 mInsertionActionModeRunnable = new Runnable() { 4348 @Override 4349 public void run() { 4350 startInsertionActionMode(); 4351 } 4352 }; 4353 } 4354 mTextView.postDelayed( 4355 mInsertionActionModeRunnable, 4356 ViewConfiguration.getDoubleTapTimeout() + 1); 4357 } 4358 4359 } 4360 4361 hideAfterDelay(); 4362 } 4363 4364 private void hideAfterDelay() { 4365 if (mHider == null) { 4366 mHider = new Runnable() { 4367 public void run() { 4368 hide(); 4369 } 4370 }; 4371 } else { 4372 removeHiderCallback(); 4373 } 4374 mTextView.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT); 4375 } 4376 4377 private void removeHiderCallback() { 4378 if (mHider != null) { 4379 mTextView.removeCallbacks(mHider); 4380 } 4381 } 4382 4383 @Override 4384 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 4385 return drawable.getIntrinsicWidth() / 2; 4386 } 4387 4388 @Override 4389 protected int getHorizontalGravity(boolean isRtlRun) { 4390 return Gravity.CENTER_HORIZONTAL; 4391 } 4392 4393 @Override 4394 protected int getCursorOffset() { 4395 int offset = super.getCursorOffset(); 4396 final Drawable cursor = mCursorCount > 0 ? mCursorDrawable[0] : null; 4397 if (cursor != null) { 4398 cursor.getPadding(mTempRect); 4399 offset += (cursor.getIntrinsicWidth() - mTempRect.left - mTempRect.right) / 2; 4400 } 4401 return offset; 4402 } 4403 4404 @Override 4405 int getCursorHorizontalPosition(Layout layout, int offset) { 4406 final Drawable drawable = mCursorCount > 0 ? mCursorDrawable[0] : null; 4407 if (drawable != null) { 4408 final float horizontal = layout.getPrimaryHorizontal(offset); 4409 return clampCursorHorizontalPosition(drawable, horizontal) + mTempRect.left; 4410 } 4411 return super.getCursorHorizontalPosition(layout, offset); 4412 } 4413 4414 @Override 4415 public boolean onTouchEvent(MotionEvent ev) { 4416 final boolean result = super.onTouchEvent(ev); 4417 4418 switch (ev.getActionMasked()) { 4419 case MotionEvent.ACTION_DOWN: 4420 mDownPositionX = ev.getRawX(); 4421 mDownPositionY = ev.getRawY(); 4422 break; 4423 4424 case MotionEvent.ACTION_UP: 4425 if (!offsetHasBeenChanged()) { 4426 final float deltaX = mDownPositionX - ev.getRawX(); 4427 final float deltaY = mDownPositionY - ev.getRawY(); 4428 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 4429 4430 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 4431 mTextView.getContext()); 4432 final int touchSlop = viewConfiguration.getScaledTouchSlop(); 4433 4434 if (distanceSquared < touchSlop * touchSlop) { 4435 // Tapping on the handle toggles the insertion action mode. 4436 if (mTextActionMode != null) { 4437 stopTextActionMode(); 4438 } else { 4439 startInsertionActionMode(); 4440 } 4441 } 4442 } else { 4443 if (mTextActionMode != null) { 4444 mTextActionMode.invalidateContentRect(); 4445 } 4446 } 4447 hideAfterDelay(); 4448 break; 4449 4450 case MotionEvent.ACTION_CANCEL: 4451 hideAfterDelay(); 4452 break; 4453 4454 default: 4455 break; 4456 } 4457 4458 return result; 4459 } 4460 4461 @Override 4462 public int getCurrentCursorOffset() { 4463 return mTextView.getSelectionStart(); 4464 } 4465 4466 @Override 4467 public void updateSelection(int offset) { 4468 Selection.setSelection((Spannable) mTextView.getText(), offset); 4469 } 4470 4471 @Override 4472 public void updatePosition(float x, float y) { 4473 Layout layout = mTextView.getLayout(); 4474 int offset; 4475 if (layout != null) { 4476 if (mPreviousLineTouched == UNSET_LINE) { 4477 mPreviousLineTouched = mTextView.getLineAtCoordinate(y); 4478 } 4479 int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); 4480 offset = mTextView.getOffsetAtCoordinate(currLine, x); 4481 mPreviousLineTouched = currLine; 4482 } else { 4483 offset = mTextView.getOffsetForPosition(x, y); 4484 } 4485 positionAtCursorOffset(offset, false); 4486 if (mTextActionMode != null) { 4487 mTextActionMode.invalidate(); 4488 } 4489 } 4490 4491 @Override 4492 void onHandleMoved() { 4493 super.onHandleMoved(); 4494 removeHiderCallback(); 4495 } 4496 4497 @Override 4498 public void onDetached() { 4499 super.onDetached(); 4500 removeHiderCallback(); 4501 } 4502 } 4503 4504 @Retention(RetentionPolicy.SOURCE) 4505 @IntDef({HANDLE_TYPE_SELECTION_START, HANDLE_TYPE_SELECTION_END}) 4506 public @interface HandleType {} 4507 public static final int HANDLE_TYPE_SELECTION_START = 0; 4508 public static final int HANDLE_TYPE_SELECTION_END = 1; 4509 4510 private class SelectionHandleView extends HandleView { 4511 // Indicates the handle type, selection start (HANDLE_TYPE_SELECTION_START) or selection 4512 // end (HANDLE_TYPE_SELECTION_END). 4513 @HandleType 4514 private final int mHandleType; 4515 // Indicates whether the cursor is making adjustments within a word. 4516 private boolean mInWord = false; 4517 // Difference between touch position and word boundary position. 4518 private float mTouchWordDelta; 4519 // X value of the previous updatePosition call. 4520 private float mPrevX; 4521 // Indicates if the handle has moved a boundary between LTR and RTL text. 4522 private boolean mLanguageDirectionChanged = false; 4523 // Distance from edge of horizontally scrolling text view 4524 // to use to switch to character mode. 4525 private final float mTextViewEdgeSlop; 4526 // Used to save text view location. 4527 private final int[] mTextViewLocation = new int[2]; 4528 4529 public SelectionHandleView(Drawable drawableLtr, Drawable drawableRtl, int id, 4530 @HandleType int handleType) { 4531 super(drawableLtr, drawableRtl, id); 4532 mHandleType = handleType; 4533 ViewConfiguration viewConfiguration = ViewConfiguration.get(mTextView.getContext()); 4534 mTextViewEdgeSlop = viewConfiguration.getScaledTouchSlop() * 4; 4535 } 4536 4537 private boolean isStartHandle() { 4538 return mHandleType == HANDLE_TYPE_SELECTION_START; 4539 } 4540 4541 @Override 4542 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 4543 if (isRtlRun == isStartHandle()) { 4544 return drawable.getIntrinsicWidth() / 4; 4545 } else { 4546 return (drawable.getIntrinsicWidth() * 3) / 4; 4547 } 4548 } 4549 4550 @Override 4551 protected int getHorizontalGravity(boolean isRtlRun) { 4552 return (isRtlRun == isStartHandle()) ? Gravity.LEFT : Gravity.RIGHT; 4553 } 4554 4555 @Override 4556 public int getCurrentCursorOffset() { 4557 return isStartHandle() ? mTextView.getSelectionStart() : mTextView.getSelectionEnd(); 4558 } 4559 4560 @Override 4561 protected void updateSelection(int offset) { 4562 if (isStartHandle()) { 4563 Selection.setSelection((Spannable) mTextView.getText(), offset, 4564 mTextView.getSelectionEnd()); 4565 } else { 4566 Selection.setSelection((Spannable) mTextView.getText(), 4567 mTextView.getSelectionStart(), offset); 4568 } 4569 updateDrawable(); 4570 if (mTextActionMode != null) { 4571 mTextActionMode.invalidate(); 4572 } 4573 } 4574 4575 @Override 4576 public void updatePosition(float x, float y) { 4577 final Layout layout = mTextView.getLayout(); 4578 if (layout == null) { 4579 // HandleView will deal appropriately in positionAtCursorOffset when 4580 // layout is null. 4581 positionAndAdjustForCrossingHandles(mTextView.getOffsetForPosition(x, y)); 4582 return; 4583 } 4584 4585 if (mPreviousLineTouched == UNSET_LINE) { 4586 mPreviousLineTouched = mTextView.getLineAtCoordinate(y); 4587 } 4588 4589 boolean positionCursor = false; 4590 final int anotherHandleOffset = 4591 isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); 4592 int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); 4593 int initialOffset = mTextView.getOffsetAtCoordinate(currLine, x); 4594 4595 if (isStartHandle() && initialOffset >= anotherHandleOffset 4596 || !isStartHandle() && initialOffset <= anotherHandleOffset) { 4597 // Handles have crossed, bound it to the first selected line and 4598 // adjust by word / char as normal. 4599 currLine = layout.getLineForOffset(anotherHandleOffset); 4600 initialOffset = mTextView.getOffsetAtCoordinate(currLine, x); 4601 } 4602 4603 int offset = initialOffset; 4604 final int wordEnd = getWordEnd(offset); 4605 final int wordStart = getWordStart(offset); 4606 4607 if (mPrevX == UNSET_X_VALUE) { 4608 mPrevX = x; 4609 } 4610 4611 final int currentOffset = getCurrentCursorOffset(); 4612 final boolean rtlAtCurrentOffset = layout.isRtlCharAt(currentOffset); 4613 final boolean atRtl = layout.isRtlCharAt(offset); 4614 final boolean isLvlBoundary = layout.isLevelBoundary(offset); 4615 4616 // We can't determine if the user is expanding or shrinking the selection if they're 4617 // on a bi-di boundary, so until they've moved past the boundary we'll just place 4618 // the cursor at the current position. 4619 if (isLvlBoundary || (rtlAtCurrentOffset && !atRtl) || (!rtlAtCurrentOffset && atRtl)) { 4620 // We're on a boundary or this is the first direction change -- just update 4621 // to the current position. 4622 mLanguageDirectionChanged = true; 4623 mTouchWordDelta = 0.0f; 4624 positionAndAdjustForCrossingHandles(offset); 4625 return; 4626 } else if (mLanguageDirectionChanged && !isLvlBoundary) { 4627 // We've just moved past the boundary so update the position. After this we can 4628 // figure out if the user is expanding or shrinking to go by word or character. 4629 positionAndAdjustForCrossingHandles(offset); 4630 mTouchWordDelta = 0.0f; 4631 mLanguageDirectionChanged = false; 4632 return; 4633 } 4634 4635 boolean isExpanding; 4636 final float xDiff = x - mPrevX; 4637 if (isStartHandle()) { 4638 isExpanding = currLine < mPreviousLineTouched; 4639 } else { 4640 isExpanding = currLine > mPreviousLineTouched; 4641 } 4642 if (atRtl == isStartHandle()) { 4643 isExpanding |= xDiff > 0; 4644 } else { 4645 isExpanding |= xDiff < 0; 4646 } 4647 4648 if (mTextView.getHorizontallyScrolling()) { 4649 if (positionNearEdgeOfScrollingView(x, atRtl) 4650 && ((isStartHandle() && mTextView.getScrollX() != 0) 4651 || (!isStartHandle() 4652 && mTextView.canScrollHorizontally(atRtl ? -1 : 1))) 4653 && ((isExpanding && ((isStartHandle() && offset < currentOffset) 4654 || (!isStartHandle() && offset > currentOffset))) 4655 || !isExpanding)) { 4656 // If we're expanding ensure that the offset is actually expanding compared to 4657 // the current offset, if the handle snapped to the word, the finger position 4658 // may be out of sync and we don't want the selection to jump back. 4659 mTouchWordDelta = 0.0f; 4660 final int nextOffset = (atRtl == isStartHandle()) 4661 ? layout.getOffsetToRightOf(mPreviousOffset) 4662 : layout.getOffsetToLeftOf(mPreviousOffset); 4663 positionAndAdjustForCrossingHandles(nextOffset); 4664 return; 4665 } 4666 } 4667 4668 if (isExpanding) { 4669 // User is increasing the selection. 4670 final boolean snapToWord = !mInWord 4671 || (isStartHandle() ? currLine < mPrevLine : currLine > mPrevLine); 4672 if (snapToWord) { 4673 // Sometimes words can be broken across lines (Chinese, hyphenation). 4674 // We still snap to the word boundary but we only use the letters on the 4675 // current line to determine if the user is far enough into the word to snap. 4676 int wordBoundary = isStartHandle() ? wordStart : wordEnd; 4677 if (layout != null && layout.getLineForOffset(wordBoundary) != currLine) { 4678 wordBoundary = isStartHandle() ? 4679 layout.getLineStart(currLine) : layout.getLineEnd(currLine); 4680 } 4681 final int offsetThresholdToSnap = isStartHandle() 4682 ? wordEnd - ((wordEnd - wordBoundary) / 2) 4683 : wordStart + ((wordBoundary - wordStart) / 2); 4684 if (isStartHandle() 4685 && (offset <= offsetThresholdToSnap || currLine < mPrevLine)) { 4686 // User is far enough into the word or on a different line so we expand by 4687 // word. 4688 offset = wordStart; 4689 } else if (!isStartHandle() 4690 && (offset >= offsetThresholdToSnap || currLine > mPrevLine)) { 4691 // User is far enough into the word or on a different line so we expand by 4692 // word. 4693 offset = wordEnd; 4694 } else { 4695 offset = mPreviousOffset; 4696 } 4697 } 4698 if (layout != null && (isStartHandle() && offset < initialOffset) 4699 || (!isStartHandle() && offset > initialOffset)) { 4700 final float adjustedX = layout.getPrimaryHorizontal(offset); 4701 mTouchWordDelta = 4702 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 4703 } else { 4704 mTouchWordDelta = 0.0f; 4705 } 4706 positionCursor = true; 4707 } else { 4708 final int adjustedOffset = 4709 mTextView.getOffsetAtCoordinate(currLine, x - mTouchWordDelta); 4710 final boolean shrinking = isStartHandle() 4711 ? adjustedOffset > mPreviousOffset || currLine > mPrevLine 4712 : adjustedOffset < mPreviousOffset || currLine < mPrevLine; 4713 if (shrinking) { 4714 // User is shrinking the selection. 4715 if (currLine != mPrevLine) { 4716 // We're on a different line, so we'll snap to word boundaries. 4717 offset = isStartHandle() ? wordStart : wordEnd; 4718 if (layout != null && (isStartHandle() && offset < initialOffset) 4719 || (!isStartHandle() && offset > initialOffset)) { 4720 final float adjustedX = layout.getPrimaryHorizontal(offset); 4721 mTouchWordDelta = 4722 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 4723 } else { 4724 mTouchWordDelta = 0.0f; 4725 } 4726 } else { 4727 offset = adjustedOffset; 4728 } 4729 positionCursor = true; 4730 } else if ((isStartHandle() && adjustedOffset < mPreviousOffset) 4731 || (!isStartHandle() && adjustedOffset > mPreviousOffset)) { 4732 // Handle has jumped to the word boundary, and the user is moving 4733 // their finger towards the handle, the delta should be updated. 4734 mTouchWordDelta = mTextView.convertToLocalHorizontalCoordinate(x) - 4735 layout.getPrimaryHorizontal(mPreviousOffset); 4736 } 4737 } 4738 4739 if (positionCursor) { 4740 mPreviousLineTouched = currLine; 4741 positionAndAdjustForCrossingHandles(offset); 4742 } 4743 mPrevX = x; 4744 } 4745 4746 /** 4747 * @param offset Cursor offset. Must be in [-1, length]. 4748 * @param parentScrolled If the parent has been scrolled or not. 4749 */ 4750 @Override 4751 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 4752 super.positionAtCursorOffset(offset, parentScrolled); 4753 mInWord = (offset != -1) && !getWordIteratorWithText().isBoundary(offset); 4754 } 4755 4756 @Override 4757 public boolean onTouchEvent(MotionEvent event) { 4758 boolean superResult = super.onTouchEvent(event); 4759 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 4760 // Reset the touch word offset and x value when the user 4761 // re-engages the handle. 4762 mTouchWordDelta = 0.0f; 4763 mPrevX = UNSET_X_VALUE; 4764 } 4765 return superResult; 4766 } 4767 4768 private void positionAndAdjustForCrossingHandles(int offset) { 4769 final int anotherHandleOffset = 4770 isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); 4771 if ((isStartHandle() && offset >= anotherHandleOffset) 4772 || (!isStartHandle() && offset <= anotherHandleOffset)) { 4773 // Handles can not cross and selection is at least one character. 4774 offset = getNextCursorOffset(anotherHandleOffset, !isStartHandle()); 4775 mTouchWordDelta = 0.0f; 4776 } 4777 positionAtCursorOffset(offset, false); 4778 } 4779 4780 private boolean positionNearEdgeOfScrollingView(float x, boolean atRtl) { 4781 mTextView.getLocationOnScreen(mTextViewLocation); 4782 boolean nearEdge; 4783 if (atRtl == isStartHandle()) { 4784 int rightEdge = mTextViewLocation[0] + mTextView.getWidth() 4785 - mTextView.getPaddingRight(); 4786 nearEdge = x > rightEdge - mTextViewEdgeSlop; 4787 } else { 4788 int leftEdge = mTextViewLocation[0] + mTextView.getPaddingLeft(); 4789 nearEdge = x < leftEdge + mTextViewEdgeSlop; 4790 } 4791 return nearEdge; 4792 } 4793 } 4794 4795 private int getCurrentLineAdjustedForSlop(Layout layout, int prevLine, float y) { 4796 final int trueLine = mTextView.getLineAtCoordinate(y); 4797 if (layout == null || prevLine > layout.getLineCount() 4798 || layout.getLineCount() <= 0 || prevLine < 0) { 4799 // Invalid parameters, just return whatever line is at y. 4800 return trueLine; 4801 } 4802 4803 if (Math.abs(trueLine - prevLine) >= 2) { 4804 // Only stick to lines if we're within a line of the previous selection. 4805 return trueLine; 4806 } 4807 4808 final float verticalOffset = mTextView.viewportToContentVerticalOffset(); 4809 final int lineCount = layout.getLineCount(); 4810 final float slop = mTextView.getLineHeight() * LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS; 4811 4812 final float firstLineTop = layout.getLineTop(0) + verticalOffset; 4813 final float prevLineTop = layout.getLineTop(prevLine) + verticalOffset; 4814 final float yTopBound = Math.max(prevLineTop - slop, firstLineTop + slop); 4815 4816 final float lastLineBottom = layout.getLineBottom(lineCount - 1) + verticalOffset; 4817 final float prevLineBottom = layout.getLineBottom(prevLine) + verticalOffset; 4818 final float yBottomBound = Math.min(prevLineBottom + slop, lastLineBottom - slop); 4819 4820 // Determine if we've moved lines based on y position and previous line. 4821 int currLine; 4822 if (y <= yTopBound) { 4823 currLine = Math.max(prevLine - 1, 0); 4824 } else if (y >= yBottomBound) { 4825 currLine = Math.min(prevLine + 1, lineCount - 1); 4826 } else { 4827 currLine = prevLine; 4828 } 4829 return currLine; 4830 } 4831 4832 /** 4833 * A CursorController instance can be used to control a cursor in the text. 4834 */ 4835 private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { 4836 /** 4837 * Makes the cursor controller visible on screen. 4838 * See also {@link #hide()}. 4839 */ 4840 public void show(); 4841 4842 /** 4843 * Hide the cursor controller from screen. 4844 * See also {@link #show()}. 4845 */ 4846 public void hide(); 4847 4848 /** 4849 * Called when the view is detached from window. Perform house keeping task, such as 4850 * stopping Runnable thread that would otherwise keep a reference on the context, thus 4851 * preventing the activity from being recycled. 4852 */ 4853 public void onDetached(); 4854 4855 public boolean isCursorBeingModified(); 4856 4857 public boolean isActive(); 4858 } 4859 4860 private class InsertionPointCursorController implements CursorController { 4861 private InsertionHandleView mHandle; 4862 4863 public void show() { 4864 getHandle().show(); 4865 4866 if (mSelectionModifierCursorController != null) { 4867 mSelectionModifierCursorController.hide(); 4868 } 4869 } 4870 4871 public void hide() { 4872 if (mHandle != null) { 4873 mHandle.hide(); 4874 } 4875 } 4876 4877 public void onTouchModeChanged(boolean isInTouchMode) { 4878 if (!isInTouchMode) { 4879 hide(); 4880 } 4881 } 4882 4883 private InsertionHandleView getHandle() { 4884 if (mSelectHandleCenter == null) { 4885 mSelectHandleCenter = mTextView.getContext().getDrawable( 4886 mTextView.mTextSelectHandleRes); 4887 } 4888 if (mHandle == null) { 4889 mHandle = new InsertionHandleView(mSelectHandleCenter); 4890 } 4891 return mHandle; 4892 } 4893 4894 @Override 4895 public void onDetached() { 4896 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 4897 observer.removeOnTouchModeChangeListener(this); 4898 4899 if (mHandle != null) mHandle.onDetached(); 4900 } 4901 4902 @Override 4903 public boolean isCursorBeingModified() { 4904 return mHandle != null && mHandle.isDragging(); 4905 } 4906 4907 @Override 4908 public boolean isActive() { 4909 return mHandle != null && mHandle.isShowing(); 4910 } 4911 } 4912 4913 class SelectionModifierCursorController implements CursorController { 4914 // The cursor controller handles, lazily created when shown. 4915 private SelectionHandleView mStartHandle; 4916 private SelectionHandleView mEndHandle; 4917 // The offsets of that last touch down event. Remembered to start selection there. 4918 private int mMinTouchOffset, mMaxTouchOffset; 4919 4920 private float mDownPositionX, mDownPositionY; 4921 private boolean mGestureStayedInTapRegion; 4922 4923 // Where the user first starts the drag motion. 4924 private int mStartOffset = -1; 4925 4926 private boolean mHaventMovedEnoughToStartDrag; 4927 // The line that a selection happened most recently with the drag accelerator. 4928 private int mLineSelectionIsOn = -1; 4929 // Whether the drag accelerator has selected past the initial line. 4930 private boolean mSwitchedLines = false; 4931 4932 // Indicates the drag accelerator mode that the user is currently using. 4933 private int mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; 4934 // Drag accelerator is inactive. 4935 private static final int DRAG_ACCELERATOR_MODE_INACTIVE = 0; 4936 // Character based selection by dragging. Only for mouse. 4937 private static final int DRAG_ACCELERATOR_MODE_CHARACTER = 1; 4938 // Word based selection by dragging. Enabled after long pressing or double tapping. 4939 private static final int DRAG_ACCELERATOR_MODE_WORD = 2; 4940 // Paragraph based selection by dragging. Enabled after mouse triple click. 4941 private static final int DRAG_ACCELERATOR_MODE_PARAGRAPH = 3; 4942 4943 SelectionModifierCursorController() { 4944 resetTouchOffsets(); 4945 } 4946 4947 public void show() { 4948 if (mTextView.isInBatchEditMode()) { 4949 return; 4950 } 4951 initDrawables(); 4952 initHandles(); 4953 } 4954 4955 private void initDrawables() { 4956 if (mSelectHandleLeft == null) { 4957 mSelectHandleLeft = mTextView.getContext().getDrawable( 4958 mTextView.mTextSelectHandleLeftRes); 4959 } 4960 if (mSelectHandleRight == null) { 4961 mSelectHandleRight = mTextView.getContext().getDrawable( 4962 mTextView.mTextSelectHandleRightRes); 4963 } 4964 } 4965 4966 private void initHandles() { 4967 // Lazy object creation has to be done before updatePosition() is called. 4968 if (mStartHandle == null) { 4969 mStartHandle = new SelectionHandleView(mSelectHandleLeft, mSelectHandleRight, 4970 com.android.internal.R.id.selection_start_handle, 4971 HANDLE_TYPE_SELECTION_START); 4972 } 4973 if (mEndHandle == null) { 4974 mEndHandle = new SelectionHandleView(mSelectHandleRight, mSelectHandleLeft, 4975 com.android.internal.R.id.selection_end_handle, 4976 HANDLE_TYPE_SELECTION_END); 4977 } 4978 4979 mStartHandle.show(); 4980 mEndHandle.show(); 4981 4982 hideInsertionPointCursorController(); 4983 } 4984 4985 public void hide() { 4986 if (mStartHandle != null) mStartHandle.hide(); 4987 if (mEndHandle != null) mEndHandle.hide(); 4988 } 4989 4990 public void enterDrag(int dragAcceleratorMode) { 4991 // Just need to init the handles / hide insertion cursor. 4992 show(); 4993 mDragAcceleratorMode = dragAcceleratorMode; 4994 // Start location of selection. 4995 mStartOffset = mTextView.getOffsetForPosition(mLastDownPositionX, 4996 mLastDownPositionY); 4997 mLineSelectionIsOn = mTextView.getLineAtCoordinate(mLastDownPositionY); 4998 // Don't show the handles until user has lifted finger. 4999 hide(); 5000 5001 // This stops scrolling parents from intercepting the touch event, allowing 5002 // the user to continue dragging across the screen to select text; TextView will 5003 // scroll as necessary. 5004 mTextView.getParent().requestDisallowInterceptTouchEvent(true); 5005 mTextView.cancelLongPress(); 5006 } 5007 5008 public void onTouchEvent(MotionEvent event) { 5009 // This is done even when the View does not have focus, so that long presses can start 5010 // selection and tap can move cursor from this tap position. 5011 final float eventX = event.getX(); 5012 final float eventY = event.getY(); 5013 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 5014 switch (event.getActionMasked()) { 5015 case MotionEvent.ACTION_DOWN: 5016 if (extractedTextModeWillBeStarted()) { 5017 // Prevent duplicating the selection handles until the mode starts. 5018 hide(); 5019 } else { 5020 // Remember finger down position, to be able to start selection from there. 5021 mMinTouchOffset = mMaxTouchOffset = mTextView.getOffsetForPosition( 5022 eventX, eventY); 5023 5024 // Double tap detection 5025 if (mGestureStayedInTapRegion) { 5026 if (mTapState == TAP_STATE_DOUBLE_TAP 5027 || mTapState == TAP_STATE_TRIPLE_CLICK) { 5028 final float deltaX = eventX - mDownPositionX; 5029 final float deltaY = eventY - mDownPositionY; 5030 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 5031 5032 ViewConfiguration viewConfiguration = ViewConfiguration.get( 5033 mTextView.getContext()); 5034 int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop(); 5035 boolean stayedInArea = 5036 distanceSquared < doubleTapSlop * doubleTapSlop; 5037 5038 if (stayedInArea && (isMouse || isPositionOnText(eventX, eventY))) { 5039 if (mTapState == TAP_STATE_DOUBLE_TAP) { 5040 selectCurrentWordAndStartDrag(); 5041 } else if (mTapState == TAP_STATE_TRIPLE_CLICK) { 5042 selectCurrentParagraphAndStartDrag(); 5043 } 5044 mDiscardNextActionUp = true; 5045 } 5046 } 5047 } 5048 5049 mDownPositionX = eventX; 5050 mDownPositionY = eventY; 5051 mGestureStayedInTapRegion = true; 5052 mHaventMovedEnoughToStartDrag = true; 5053 } 5054 break; 5055 5056 case MotionEvent.ACTION_POINTER_DOWN: 5057 case MotionEvent.ACTION_POINTER_UP: 5058 // Handle multi-point gestures. Keep min and max offset positions. 5059 // Only activated for devices that correctly handle multi-touch. 5060 if (mTextView.getContext().getPackageManager().hasSystemFeature( 5061 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { 5062 updateMinAndMaxOffsets(event); 5063 } 5064 break; 5065 5066 case MotionEvent.ACTION_MOVE: 5067 final ViewConfiguration viewConfig = ViewConfiguration.get( 5068 mTextView.getContext()); 5069 final int touchSlop = viewConfig.getScaledTouchSlop(); 5070 5071 if (mGestureStayedInTapRegion || mHaventMovedEnoughToStartDrag) { 5072 final float deltaX = eventX - mDownPositionX; 5073 final float deltaY = eventY - mDownPositionY; 5074 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 5075 5076 if (mGestureStayedInTapRegion) { 5077 int doubleTapTouchSlop = viewConfig.getScaledDoubleTapTouchSlop(); 5078 mGestureStayedInTapRegion = 5079 distanceSquared <= doubleTapTouchSlop * doubleTapTouchSlop; 5080 } 5081 if (mHaventMovedEnoughToStartDrag) { 5082 // We don't start dragging until the user has moved enough. 5083 mHaventMovedEnoughToStartDrag = 5084 distanceSquared <= touchSlop * touchSlop; 5085 } 5086 } 5087 5088 if (isMouse && !isDragAcceleratorActive()) { 5089 final int offset = mTextView.getOffsetForPosition(eventX, eventY); 5090 if (mTextView.hasSelection() 5091 && (!mHaventMovedEnoughToStartDrag || mStartOffset != offset) 5092 && offset >= mTextView.getSelectionStart() 5093 && offset <= mTextView.getSelectionEnd()) { 5094 startDragAndDrop(); 5095 break; 5096 } 5097 5098 if (mStartOffset != offset) { 5099 // Start character based drag accelerator. 5100 stopTextActionMode(); 5101 enterDrag(DRAG_ACCELERATOR_MODE_CHARACTER); 5102 mDiscardNextActionUp = true; 5103 mHaventMovedEnoughToStartDrag = false; 5104 } 5105 } 5106 5107 if (mStartHandle != null && mStartHandle.isShowing()) { 5108 // Don't do the drag if the handles are showing already. 5109 break; 5110 } 5111 5112 updateSelection(event); 5113 break; 5114 5115 case MotionEvent.ACTION_UP: 5116 if (!isDragAcceleratorActive()) { 5117 break; 5118 } 5119 updateSelection(event); 5120 5121 // No longer dragging to select text, let the parent intercept events. 5122 mTextView.getParent().requestDisallowInterceptTouchEvent(false); 5123 5124 int startOffset = mTextView.getSelectionStart(); 5125 int endOffset = mTextView.getSelectionEnd(); 5126 5127 // Since we don't let drag handles pass once they're visible, we need to 5128 // make sure the start / end locations are correct because the user *can* 5129 // switch directions during the initial drag. 5130 if (endOffset < startOffset) { 5131 int tmp = endOffset; 5132 endOffset = startOffset; 5133 startOffset = tmp; 5134 5135 // Also update the selection with the right offsets in this case. 5136 Selection.setSelection((Spannable) mTextView.getText(), 5137 startOffset, endOffset); 5138 } 5139 if (startOffset != endOffset) { 5140 startSelectionActionMode(); 5141 } 5142 5143 // No longer the first dragging motion, reset. 5144 resetDragAcceleratorState(); 5145 break; 5146 } 5147 } 5148 5149 private void updateSelection(MotionEvent event) { 5150 if (mTextView.getLayout() != null) { 5151 switch (mDragAcceleratorMode) { 5152 case DRAG_ACCELERATOR_MODE_CHARACTER: 5153 updateCharacterBasedSelection(event); 5154 break; 5155 case DRAG_ACCELERATOR_MODE_WORD: 5156 updateWordBasedSelection(event); 5157 break; 5158 case DRAG_ACCELERATOR_MODE_PARAGRAPH: 5159 updateParagraphBasedSelection(event); 5160 break; 5161 } 5162 } 5163 } 5164 5165 /** 5166 * If the TextView allows text selection, selects the current paragraph and starts a drag. 5167 * 5168 * @return true if the drag was started. 5169 */ 5170 private boolean selectCurrentParagraphAndStartDrag() { 5171 if (mInsertionActionModeRunnable != null) { 5172 mTextView.removeCallbacks(mInsertionActionModeRunnable); 5173 } 5174 stopTextActionMode(); 5175 if (!selectCurrentParagraph()) { 5176 return false; 5177 } 5178 enterDrag(SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_PARAGRAPH); 5179 return true; 5180 } 5181 5182 private void updateCharacterBasedSelection(MotionEvent event) { 5183 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 5184 Selection.setSelection((Spannable) mTextView.getText(), mStartOffset, offset); 5185 } 5186 5187 private void updateWordBasedSelection(MotionEvent event) { 5188 if (mHaventMovedEnoughToStartDrag) { 5189 return; 5190 } 5191 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 5192 final ViewConfiguration viewConfig = ViewConfiguration.get( 5193 mTextView.getContext()); 5194 final float eventX = event.getX(); 5195 final float eventY = event.getY(); 5196 final int currLine; 5197 if (isMouse) { 5198 // No need to offset the y coordinate for mouse input. 5199 currLine = mTextView.getLineAtCoordinate(eventY); 5200 } else { 5201 float y = eventY; 5202 if (mSwitchedLines) { 5203 // Offset the finger by the same vertical offset as the handles. 5204 // This improves visibility of the content being selected by 5205 // shifting the finger below the content, this is applied once 5206 // the user has switched lines. 5207 final int touchSlop = viewConfig.getScaledTouchSlop(); 5208 final float fingerOffset = (mStartHandle != null) 5209 ? mStartHandle.getIdealVerticalOffset() 5210 : touchSlop; 5211 y = eventY - fingerOffset; 5212 } 5213 5214 currLine = getCurrentLineAdjustedForSlop(mTextView.getLayout(), mLineSelectionIsOn, 5215 y); 5216 if (!mSwitchedLines && currLine != mLineSelectionIsOn) { 5217 // Break early here, we want to offset the finger position from 5218 // the selection highlight, once the user moved their finger 5219 // to a different line we should apply the offset and *not* switch 5220 // lines until recomputing the position with the finger offset. 5221 mSwitchedLines = true; 5222 return; 5223 } 5224 } 5225 5226 int startOffset; 5227 int offset = mTextView.getOffsetAtCoordinate(currLine, eventX); 5228 // Snap to word boundaries. 5229 if (mStartOffset < offset) { 5230 // Expanding with end handle. 5231 offset = getWordEnd(offset); 5232 startOffset = getWordStart(mStartOffset); 5233 } else { 5234 // Expanding with start handle. 5235 offset = getWordStart(offset); 5236 startOffset = getWordEnd(mStartOffset); 5237 } 5238 mLineSelectionIsOn = currLine; 5239 Selection.setSelection((Spannable) mTextView.getText(), 5240 startOffset, offset); 5241 } 5242 5243 private void updateParagraphBasedSelection(MotionEvent event) { 5244 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 5245 5246 final int start = Math.min(offset, mStartOffset); 5247 final int end = Math.max(offset, mStartOffset); 5248 final long paragraphsRange = getParagraphsRange(start, end); 5249 final int selectionStart = TextUtils.unpackRangeStartFromLong(paragraphsRange); 5250 final int selectionEnd = TextUtils.unpackRangeEndFromLong(paragraphsRange); 5251 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 5252 } 5253 5254 /** 5255 * @param event 5256 */ 5257 private void updateMinAndMaxOffsets(MotionEvent event) { 5258 int pointerCount = event.getPointerCount(); 5259 for (int index = 0; index < pointerCount; index++) { 5260 int offset = mTextView.getOffsetForPosition(event.getX(index), event.getY(index)); 5261 if (offset < mMinTouchOffset) mMinTouchOffset = offset; 5262 if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; 5263 } 5264 } 5265 5266 public int getMinTouchOffset() { 5267 return mMinTouchOffset; 5268 } 5269 5270 public int getMaxTouchOffset() { 5271 return mMaxTouchOffset; 5272 } 5273 5274 public void resetTouchOffsets() { 5275 mMinTouchOffset = mMaxTouchOffset = -1; 5276 resetDragAcceleratorState(); 5277 } 5278 5279 private void resetDragAcceleratorState() { 5280 mStartOffset = -1; 5281 mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; 5282 mSwitchedLines = false; 5283 final int selectionStart = mTextView.getSelectionStart(); 5284 final int selectionEnd = mTextView.getSelectionEnd(); 5285 if (selectionStart > selectionEnd) { 5286 Selection.setSelection((Spannable) mTextView.getText(), 5287 selectionEnd, selectionStart); 5288 } 5289 } 5290 5291 /** 5292 * @return true iff this controller is currently used to move the selection start. 5293 */ 5294 public boolean isSelectionStartDragged() { 5295 return mStartHandle != null && mStartHandle.isDragging(); 5296 } 5297 5298 @Override 5299 public boolean isCursorBeingModified() { 5300 return isDragAcceleratorActive() || isSelectionStartDragged() 5301 || (mEndHandle != null && mEndHandle.isDragging()); 5302 } 5303 5304 /** 5305 * @return true if the user is selecting text using the drag accelerator. 5306 */ 5307 public boolean isDragAcceleratorActive() { 5308 return mDragAcceleratorMode != DRAG_ACCELERATOR_MODE_INACTIVE; 5309 } 5310 5311 public void onTouchModeChanged(boolean isInTouchMode) { 5312 if (!isInTouchMode) { 5313 hide(); 5314 } 5315 } 5316 5317 @Override 5318 public void onDetached() { 5319 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 5320 observer.removeOnTouchModeChangeListener(this); 5321 5322 if (mStartHandle != null) mStartHandle.onDetached(); 5323 if (mEndHandle != null) mEndHandle.onDetached(); 5324 } 5325 5326 @Override 5327 public boolean isActive() { 5328 return mStartHandle != null && mStartHandle.isShowing(); 5329 } 5330 } 5331 5332 private class CorrectionHighlighter { 5333 private final Path mPath = new Path(); 5334 private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 5335 private int mStart, mEnd; 5336 private long mFadingStartTime; 5337 private RectF mTempRectF; 5338 private final static int FADE_OUT_DURATION = 400; 5339 5340 public CorrectionHighlighter() { 5341 mPaint.setCompatibilityScaling(mTextView.getResources().getCompatibilityInfo(). 5342 applicationScale); 5343 mPaint.setStyle(Paint.Style.FILL); 5344 } 5345 5346 public void highlight(CorrectionInfo info) { 5347 mStart = info.getOffset(); 5348 mEnd = mStart + info.getNewText().length(); 5349 mFadingStartTime = SystemClock.uptimeMillis(); 5350 5351 if (mStart < 0 || mEnd < 0) { 5352 stopAnimation(); 5353 } 5354 } 5355 5356 public void draw(Canvas canvas, int cursorOffsetVertical) { 5357 if (updatePath() && updatePaint()) { 5358 if (cursorOffsetVertical != 0) { 5359 canvas.translate(0, cursorOffsetVertical); 5360 } 5361 5362 canvas.drawPath(mPath, mPaint); 5363 5364 if (cursorOffsetVertical != 0) { 5365 canvas.translate(0, -cursorOffsetVertical); 5366 } 5367 invalidate(true); // TODO invalidate cursor region only 5368 } else { 5369 stopAnimation(); 5370 invalidate(false); // TODO invalidate cursor region only 5371 } 5372 } 5373 5374 private boolean updatePaint() { 5375 final long duration = SystemClock.uptimeMillis() - mFadingStartTime; 5376 if (duration > FADE_OUT_DURATION) return false; 5377 5378 final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; 5379 final int highlightColorAlpha = Color.alpha(mTextView.mHighlightColor); 5380 final int color = (mTextView.mHighlightColor & 0x00FFFFFF) + 5381 ((int) (highlightColorAlpha * coef) << 24); 5382 mPaint.setColor(color); 5383 return true; 5384 } 5385 5386 private boolean updatePath() { 5387 final Layout layout = mTextView.getLayout(); 5388 if (layout == null) return false; 5389 5390 // Update in case text is edited while the animation is run 5391 final int length = mTextView.getText().length(); 5392 int start = Math.min(length, mStart); 5393 int end = Math.min(length, mEnd); 5394 5395 mPath.reset(); 5396 layout.getSelectionPath(start, end, mPath); 5397 return true; 5398 } 5399 5400 private void invalidate(boolean delayed) { 5401 if (mTextView.getLayout() == null) return; 5402 5403 if (mTempRectF == null) mTempRectF = new RectF(); 5404 mPath.computeBounds(mTempRectF, false); 5405 5406 int left = mTextView.getCompoundPaddingLeft(); 5407 int top = mTextView.getExtendedPaddingTop() + mTextView.getVerticalOffset(true); 5408 5409 if (delayed) { 5410 mTextView.postInvalidateOnAnimation( 5411 left + (int) mTempRectF.left, top + (int) mTempRectF.top, 5412 left + (int) mTempRectF.right, top + (int) mTempRectF.bottom); 5413 } else { 5414 mTextView.postInvalidate((int) mTempRectF.left, (int) mTempRectF.top, 5415 (int) mTempRectF.right, (int) mTempRectF.bottom); 5416 } 5417 } 5418 5419 private void stopAnimation() { 5420 Editor.this.mCorrectionHighlighter = null; 5421 } 5422 } 5423 5424 private static class ErrorPopup extends PopupWindow { 5425 private boolean mAbove = false; 5426 private final TextView mView; 5427 private int mPopupInlineErrorBackgroundId = 0; 5428 private int mPopupInlineErrorAboveBackgroundId = 0; 5429 5430 ErrorPopup(TextView v, int width, int height) { 5431 super(v, width, height); 5432 mView = v; 5433 // Make sure the TextView has a background set as it will be used the first time it is 5434 // shown and positioned. Initialized with below background, which should have 5435 // dimensions identical to the above version for this to work (and is more likely). 5436 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 5437 com.android.internal.R.styleable.Theme_errorMessageBackground); 5438 mView.setBackgroundResource(mPopupInlineErrorBackgroundId); 5439 } 5440 5441 void fixDirection(boolean above) { 5442 mAbove = above; 5443 5444 if (above) { 5445 mPopupInlineErrorAboveBackgroundId = 5446 getResourceId(mPopupInlineErrorAboveBackgroundId, 5447 com.android.internal.R.styleable.Theme_errorMessageAboveBackground); 5448 } else { 5449 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 5450 com.android.internal.R.styleable.Theme_errorMessageBackground); 5451 } 5452 5453 mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId : 5454 mPopupInlineErrorBackgroundId); 5455 } 5456 5457 private int getResourceId(int currentId, int index) { 5458 if (currentId == 0) { 5459 TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( 5460 R.styleable.Theme); 5461 currentId = styledAttributes.getResourceId(index, 0); 5462 styledAttributes.recycle(); 5463 } 5464 return currentId; 5465 } 5466 5467 @Override 5468 public void update(int x, int y, int w, int h, boolean force) { 5469 super.update(x, y, w, h, force); 5470 5471 boolean above = isAboveAnchor(); 5472 if (above != mAbove) { 5473 fixDirection(above); 5474 } 5475 } 5476 } 5477 5478 static class InputContentType { 5479 int imeOptions = EditorInfo.IME_NULL; 5480 String privateImeOptions; 5481 CharSequence imeActionLabel; 5482 int imeActionId; 5483 Bundle extras; 5484 OnEditorActionListener onEditorActionListener; 5485 boolean enterDown; 5486 LocaleList imeHintLocales; 5487 } 5488 5489 static class InputMethodState { 5490 ExtractedTextRequest mExtractedTextRequest; 5491 final ExtractedText mExtractedText = new ExtractedText(); 5492 int mBatchEditNesting; 5493 boolean mCursorChanged; 5494 boolean mSelectionModeChanged; 5495 boolean mContentChanged; 5496 int mChangedStart, mChangedEnd, mChangedDelta; 5497 } 5498 5499 /** 5500 * @return True iff (start, end) is a valid range within the text. 5501 */ 5502 private static boolean isValidRange(CharSequence text, int start, int end) { 5503 return 0 <= start && start <= end && end <= text.length(); 5504 } 5505 5506 @VisibleForTesting 5507 public SuggestionsPopupWindow getSuggestionsPopupWindowForTesting() { 5508 return mSuggestionsPopupWindow; 5509 } 5510 5511 /** 5512 * An InputFilter that monitors text input to maintain undo history. It does not modify the 5513 * text being typed (and hence always returns null from the filter() method). 5514 */ 5515 public static class UndoInputFilter implements InputFilter { 5516 private final Editor mEditor; 5517 5518 // Whether the current filter pass is directly caused by an end-user text edit. 5519 private boolean mIsUserEdit; 5520 5521 // Whether the text field is handling an IME composition. Must be parceled in case the user 5522 // rotates the screen during composition. 5523 private boolean mHasComposition; 5524 5525 // Whether to merge events into one operation. 5526 private boolean mForceMerge; 5527 5528 public UndoInputFilter(Editor editor) { 5529 mEditor = editor; 5530 } 5531 5532 public void saveInstanceState(Parcel parcel) { 5533 parcel.writeInt(mIsUserEdit ? 1 : 0); 5534 parcel.writeInt(mHasComposition ? 1 : 0); 5535 } 5536 5537 public void restoreInstanceState(Parcel parcel) { 5538 mIsUserEdit = parcel.readInt() != 0; 5539 mHasComposition = parcel.readInt() != 0; 5540 } 5541 5542 public void setForceMerge(boolean forceMerge) { 5543 mForceMerge = forceMerge; 5544 } 5545 5546 /** 5547 * Signals that a user-triggered edit is starting. 5548 */ 5549 public void beginBatchEdit() { 5550 if (DEBUG_UNDO) Log.d(TAG, "beginBatchEdit"); 5551 mIsUserEdit = true; 5552 } 5553 5554 public void endBatchEdit() { 5555 if (DEBUG_UNDO) Log.d(TAG, "endBatchEdit"); 5556 mIsUserEdit = false; 5557 } 5558 5559 @Override 5560 public CharSequence filter(CharSequence source, int start, int end, 5561 Spanned dest, int dstart, int dend) { 5562 if (DEBUG_UNDO) { 5563 Log.d(TAG, "filter: source=" + source + " (" + start + "-" + end + ") " + 5564 "dest=" + dest + " (" + dstart + "-" + dend + ")"); 5565 } 5566 5567 // Check to see if this edit should be tracked for undo. 5568 if (!canUndoEdit(source, start, end, dest, dstart, dend)) { 5569 return null; 5570 } 5571 5572 // Check for and handle IME composition edits. 5573 if (handleCompositionEdit(source, start, end, dstart)) { 5574 return null; 5575 } 5576 5577 // Handle keyboard edits. 5578 handleKeyboardEdit(source, start, end, dest, dstart, dend); 5579 return null; 5580 } 5581 5582 /** 5583 * Returns true iff the edit was handled, either because it should be ignored or because 5584 * this function created an undo operation for it. 5585 */ 5586 private boolean handleCompositionEdit(CharSequence source, int start, int end, int dstart) { 5587 // Ignore edits while the user is composing. 5588 if (isComposition(source)) { 5589 mHasComposition = true; 5590 return true; 5591 } 5592 final boolean hadComposition = mHasComposition; 5593 mHasComposition = false; 5594 5595 // Check for the transition out of the composing state. 5596 if (hadComposition) { 5597 // If there was no text the user canceled composition. Ignore the edit. 5598 if (start == end) { 5599 return true; 5600 } 5601 5602 // Otherwise the user inserted the composition. 5603 String newText = TextUtils.substring(source, start, end); 5604 EditOperation edit = new EditOperation(mEditor, "", dstart, newText); 5605 recordEdit(edit, mForceMerge); 5606 return true; 5607 } 5608 5609 // This was neither a composition event nor a transition out of composing. 5610 return false; 5611 } 5612 5613 private void handleKeyboardEdit(CharSequence source, int start, int end, 5614 Spanned dest, int dstart, int dend) { 5615 // An application may install a TextWatcher to provide additional modifications after 5616 // the initial input filters run (e.g. a credit card formatter that adds spaces to a 5617 // string). This results in multiple filter() calls for what the user considers to be 5618 // a single operation. Always undo the whole set of changes in one step. 5619 final boolean forceMerge = mForceMerge || isInTextWatcher(); 5620 5621 // Build a new operation with all the information from this edit. 5622 String newText = TextUtils.substring(source, start, end); 5623 String oldText = TextUtils.substring(dest, dstart, dend); 5624 EditOperation edit = new EditOperation(mEditor, oldText, dstart, newText); 5625 recordEdit(edit, forceMerge); 5626 } 5627 5628 /** 5629 * Fetches the last undo operation and checks to see if a new edit should be merged into it. 5630 * If forceMerge is true then the new edit is always merged. 5631 */ 5632 private void recordEdit(EditOperation edit, boolean forceMerge) { 5633 // Fetch the last edit operation and attempt to merge in the new edit. 5634 final UndoManager um = mEditor.mUndoManager; 5635 um.beginUpdate("Edit text"); 5636 EditOperation lastEdit = um.getLastOperation( 5637 EditOperation.class, mEditor.mUndoOwner, UndoManager.MERGE_MODE_UNIQUE); 5638 if (lastEdit == null) { 5639 // Add this as the first edit. 5640 if (DEBUG_UNDO) Log.d(TAG, "filter: adding first op " + edit); 5641 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5642 } else if (forceMerge) { 5643 // Forced merges take priority because they could be the result of a non-user-edit 5644 // change and this case should not create a new undo operation. 5645 if (DEBUG_UNDO) Log.d(TAG, "filter: force merge " + edit); 5646 lastEdit.forceMergeWith(edit); 5647 } else if (!mIsUserEdit) { 5648 // An application directly modified the Editable outside of a text edit. Treat this 5649 // as a new change and don't attempt to merge. 5650 if (DEBUG_UNDO) Log.d(TAG, "non-user edit, new op " + edit); 5651 um.commitState(mEditor.mUndoOwner); 5652 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5653 } else if (lastEdit.mergeWith(edit)) { 5654 // Merge succeeded, nothing else to do. 5655 if (DEBUG_UNDO) Log.d(TAG, "filter: merge succeeded, created " + lastEdit); 5656 } else { 5657 // Could not merge with the last edit, so commit the last edit and add this edit. 5658 if (DEBUG_UNDO) Log.d(TAG, "filter: merge failed, adding " + edit); 5659 um.commitState(mEditor.mUndoOwner); 5660 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5661 } 5662 um.endUpdate(); 5663 } 5664 5665 private boolean canUndoEdit(CharSequence source, int start, int end, 5666 Spanned dest, int dstart, int dend) { 5667 if (!mEditor.mAllowUndo) { 5668 if (DEBUG_UNDO) Log.d(TAG, "filter: undo is disabled"); 5669 return false; 5670 } 5671 5672 if (mEditor.mUndoManager.isInUndo()) { 5673 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping, currently performing undo/redo"); 5674 return false; 5675 } 5676 5677 // Text filters run before input operations are applied. However, some input operations 5678 // are invalid and will throw exceptions when applied. This is common in tests. Don't 5679 // attempt to undo invalid operations. 5680 if (!isValidRange(source, start, end) || !isValidRange(dest, dstart, dend)) { 5681 if (DEBUG_UNDO) Log.d(TAG, "filter: invalid op"); 5682 return false; 5683 } 5684 5685 // Earlier filters can rewrite input to be a no-op, for example due to a length limit 5686 // on an input field. Skip no-op changes. 5687 if (start == end && dstart == dend) { 5688 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping no-op"); 5689 return false; 5690 } 5691 5692 return true; 5693 } 5694 5695 private boolean isComposition(CharSequence source) { 5696 if (!(source instanceof Spannable)) { 5697 return false; 5698 } 5699 // This is a composition edit if the source has a non-zero-length composing span. 5700 Spannable text = (Spannable) source; 5701 int composeBegin = EditableInputConnection.getComposingSpanStart(text); 5702 int composeEnd = EditableInputConnection.getComposingSpanEnd(text); 5703 return composeBegin < composeEnd; 5704 } 5705 5706 private boolean isInTextWatcher() { 5707 CharSequence text = mEditor.mTextView.getText(); 5708 return (text instanceof SpannableStringBuilder) 5709 && ((SpannableStringBuilder) text).getTextWatcherDepth() > 0; 5710 } 5711 } 5712 5713 /** 5714 * An operation to undo a single "edit" to a text view. 5715 */ 5716 public static class EditOperation extends UndoOperation<Editor> { 5717 private static final int TYPE_INSERT = 0; 5718 private static final int TYPE_DELETE = 1; 5719 private static final int TYPE_REPLACE = 2; 5720 5721 private int mType; 5722 private String mOldText; 5723 private int mOldTextStart; 5724 private String mNewText; 5725 private int mNewTextStart; 5726 5727 private int mOldCursorPos; 5728 private int mNewCursorPos; 5729 5730 /** 5731 * Constructs an edit operation from a text input operation on editor that replaces the 5732 * oldText starting at dstart with newText. 5733 */ 5734 public EditOperation(Editor editor, String oldText, int dstart, String newText) { 5735 super(editor.mUndoOwner); 5736 mOldText = oldText; 5737 mNewText = newText; 5738 5739 // Determine the type of the edit and store where it occurred. Avoid storing 5740 // irrevelant data (e.g. mNewTextStart for a delete) because that makes the 5741 // merging logic more complex (e.g. merging deletes could lead to mNewTextStart being 5742 // outside the bounds of the final text). 5743 if (mNewText.length() > 0 && mOldText.length() == 0) { 5744 mType = TYPE_INSERT; 5745 mNewTextStart = dstart; 5746 } else if (mNewText.length() == 0 && mOldText.length() > 0) { 5747 mType = TYPE_DELETE; 5748 mOldTextStart = dstart; 5749 } else { 5750 mType = TYPE_REPLACE; 5751 mOldTextStart = mNewTextStart = dstart; 5752 } 5753 5754 // Store cursor data. 5755 mOldCursorPos = editor.mTextView.getSelectionStart(); 5756 mNewCursorPos = dstart + mNewText.length(); 5757 } 5758 5759 public EditOperation(Parcel src, ClassLoader loader) { 5760 super(src, loader); 5761 mType = src.readInt(); 5762 mOldText = src.readString(); 5763 mOldTextStart = src.readInt(); 5764 mNewText = src.readString(); 5765 mNewTextStart = src.readInt(); 5766 mOldCursorPos = src.readInt(); 5767 mNewCursorPos = src.readInt(); 5768 } 5769 5770 @Override 5771 public void writeToParcel(Parcel dest, int flags) { 5772 dest.writeInt(mType); 5773 dest.writeString(mOldText); 5774 dest.writeInt(mOldTextStart); 5775 dest.writeString(mNewText); 5776 dest.writeInt(mNewTextStart); 5777 dest.writeInt(mOldCursorPos); 5778 dest.writeInt(mNewCursorPos); 5779 } 5780 5781 private int getNewTextEnd() { 5782 return mNewTextStart + mNewText.length(); 5783 } 5784 5785 private int getOldTextEnd() { 5786 return mOldTextStart + mOldText.length(); 5787 } 5788 5789 @Override 5790 public void commit() { 5791 } 5792 5793 @Override 5794 public void undo() { 5795 if (DEBUG_UNDO) Log.d(TAG, "undo"); 5796 // Remove the new text and insert the old. 5797 Editor editor = getOwnerData(); 5798 Editable text = (Editable) editor.mTextView.getText(); 5799 modifyText(text, mNewTextStart, getNewTextEnd(), mOldText, mOldTextStart, 5800 mOldCursorPos); 5801 } 5802 5803 @Override 5804 public void redo() { 5805 if (DEBUG_UNDO) Log.d(TAG, "redo"); 5806 // Remove the old text and insert the new. 5807 Editor editor = getOwnerData(); 5808 Editable text = (Editable) editor.mTextView.getText(); 5809 modifyText(text, mOldTextStart, getOldTextEnd(), mNewText, mNewTextStart, 5810 mNewCursorPos); 5811 } 5812 5813 /** 5814 * Attempts to merge this existing operation with a new edit. 5815 * @param edit The new edit operation. 5816 * @return If the merge succeeded, returns true. Otherwise returns false and leaves this 5817 * object unchanged. 5818 */ 5819 private boolean mergeWith(EditOperation edit) { 5820 if (DEBUG_UNDO) { 5821 Log.d(TAG, "mergeWith old " + this); 5822 Log.d(TAG, "mergeWith new " + edit); 5823 } 5824 switch (mType) { 5825 case TYPE_INSERT: 5826 return mergeInsertWith(edit); 5827 case TYPE_DELETE: 5828 return mergeDeleteWith(edit); 5829 case TYPE_REPLACE: 5830 return mergeReplaceWith(edit); 5831 default: 5832 return false; 5833 } 5834 } 5835 5836 private boolean mergeInsertWith(EditOperation edit) { 5837 // Only merge continuous insertions. 5838 if (edit.mType != TYPE_INSERT) { 5839 return false; 5840 } 5841 // Only merge insertions that are contiguous. 5842 if (getNewTextEnd() != edit.mNewTextStart) { 5843 return false; 5844 } 5845 mNewText += edit.mNewText; 5846 mNewCursorPos = edit.mNewCursorPos; 5847 return true; 5848 } 5849 5850 // TODO: Support forward delete. 5851 private boolean mergeDeleteWith(EditOperation edit) { 5852 // Only merge continuous deletes. 5853 if (edit.mType != TYPE_DELETE) { 5854 return false; 5855 } 5856 // Only merge deletions that are contiguous. 5857 if (mOldTextStart != edit.getOldTextEnd()) { 5858 return false; 5859 } 5860 mOldTextStart = edit.mOldTextStart; 5861 mOldText = edit.mOldText + mOldText; 5862 mNewCursorPos = edit.mNewCursorPos; 5863 return true; 5864 } 5865 5866 private boolean mergeReplaceWith(EditOperation edit) { 5867 // Replacements can merge only with adjacent inserts. 5868 if (edit.mType != TYPE_INSERT || getNewTextEnd() != edit.mNewTextStart) { 5869 return false; 5870 } 5871 mOldText += edit.mOldText; 5872 mNewText += edit.mNewText; 5873 mNewCursorPos = edit.mNewCursorPos; 5874 return true; 5875 } 5876 5877 /** 5878 * Forcibly creates a single merged edit operation by simulating the entire text 5879 * contents being replaced. 5880 */ 5881 public void forceMergeWith(EditOperation edit) { 5882 if (DEBUG_UNDO) Log.d(TAG, "forceMerge"); 5883 Editor editor = getOwnerData(); 5884 5885 // Copy the text of the current field. 5886 // NOTE: Using StringBuilder instead of SpannableStringBuilder would be somewhat faster, 5887 // but would require two parallel implementations of modifyText() because Editable and 5888 // StringBuilder do not share an interface for replace/delete/insert. 5889 Editable editable = (Editable) editor.mTextView.getText(); 5890 Editable originalText = new SpannableStringBuilder(editable.toString()); 5891 5892 // Roll back the last operation. 5893 modifyText(originalText, mNewTextStart, getNewTextEnd(), mOldText, mOldTextStart, 5894 mOldCursorPos); 5895 5896 // Clone the text again and apply the new operation. 5897 Editable finalText = new SpannableStringBuilder(editable.toString()); 5898 modifyText(finalText, edit.mOldTextStart, edit.getOldTextEnd(), edit.mNewText, 5899 edit.mNewTextStart, edit.mNewCursorPos); 5900 5901 // Convert this operation into a non-mergeable replacement of the entire string. 5902 mType = TYPE_REPLACE; 5903 mNewText = finalText.toString(); 5904 mNewTextStart = 0; 5905 mOldText = originalText.toString(); 5906 mOldTextStart = 0; 5907 mNewCursorPos = edit.mNewCursorPos; 5908 // mOldCursorPos is unchanged. 5909 } 5910 5911 private static void modifyText(Editable text, int deleteFrom, int deleteTo, 5912 CharSequence newText, int newTextInsertAt, int newCursorPos) { 5913 // Apply the edit if it is still valid. 5914 if (isValidRange(text, deleteFrom, deleteTo) && 5915 newTextInsertAt <= text.length() - (deleteTo - deleteFrom)) { 5916 if (deleteFrom != deleteTo) { 5917 text.delete(deleteFrom, deleteTo); 5918 } 5919 if (newText.length() != 0) { 5920 text.insert(newTextInsertAt, newText); 5921 } 5922 } 5923 // Restore the cursor position. If there wasn't an old cursor (newCursorPos == -1) then 5924 // don't explicitly set it and rely on SpannableStringBuilder to position it. 5925 // TODO: Select all the text that was undone. 5926 if (0 <= newCursorPos && newCursorPos <= text.length()) { 5927 Selection.setSelection(text, newCursorPos); 5928 } 5929 } 5930 5931 private String getTypeString() { 5932 switch (mType) { 5933 case TYPE_INSERT: 5934 return "insert"; 5935 case TYPE_DELETE: 5936 return "delete"; 5937 case TYPE_REPLACE: 5938 return "replace"; 5939 default: 5940 return ""; 5941 } 5942 } 5943 5944 @Override 5945 public String toString() { 5946 return "[mType=" + getTypeString() + ", " + 5947 "mOldText=" + mOldText + ", " + 5948 "mOldTextStart=" + mOldTextStart + ", " + 5949 "mNewText=" + mNewText + ", " + 5950 "mNewTextStart=" + mNewTextStart + ", " + 5951 "mOldCursorPos=" + mOldCursorPos + ", " + 5952 "mNewCursorPos=" + mNewCursorPos + "]"; 5953 } 5954 5955 public static final Parcelable.ClassLoaderCreator<EditOperation> CREATOR 5956 = new Parcelable.ClassLoaderCreator<EditOperation>() { 5957 @Override 5958 public EditOperation createFromParcel(Parcel in) { 5959 return new EditOperation(in, null); 5960 } 5961 5962 @Override 5963 public EditOperation createFromParcel(Parcel in, ClassLoader loader) { 5964 return new EditOperation(in, loader); 5965 } 5966 5967 @Override 5968 public EditOperation[] newArray(int size) { 5969 return new EditOperation[size]; 5970 } 5971 }; 5972 } 5973 5974 /** 5975 * A helper for enabling and handling "PROCESS_TEXT" menu actions. 5976 * These allow external applications to plug into currently selected text. 5977 */ 5978 static final class ProcessTextIntentActionsHandler { 5979 5980 private final Editor mEditor; 5981 private final TextView mTextView; 5982 private final PackageManager mPackageManager; 5983 private final SparseArray<Intent> mAccessibilityIntents = new SparseArray<Intent>(); 5984 private final SparseArray<AccessibilityNodeInfo.AccessibilityAction> mAccessibilityActions 5985 = new SparseArray<AccessibilityNodeInfo.AccessibilityAction>(); 5986 5987 private ProcessTextIntentActionsHandler(Editor editor) { 5988 mEditor = Preconditions.checkNotNull(editor); 5989 mTextView = Preconditions.checkNotNull(mEditor.mTextView); 5990 mPackageManager = Preconditions.checkNotNull( 5991 mTextView.getContext().getPackageManager()); 5992 } 5993 5994 /** 5995 * Adds "PROCESS_TEXT" menu items to the specified menu. 5996 */ 5997 public void onInitializeMenu(Menu menu) { 5998 int i = 0; 5999 for (ResolveInfo resolveInfo : getSupportedActivities()) { 6000 menu.add(Menu.NONE, Menu.NONE, 6001 Editor.MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START + i++, 6002 getLabel(resolveInfo)) 6003 .setIntent(createProcessTextIntentForResolveInfo(resolveInfo)) 6004 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 6005 } 6006 } 6007 6008 /** 6009 * Performs a "PROCESS_TEXT" action if there is one associated with the specified 6010 * menu item. 6011 * 6012 * @return True if the action was performed, false otherwise. 6013 */ 6014 public boolean performMenuItemAction(MenuItem item) { 6015 return fireIntent(item.getIntent()); 6016 } 6017 6018 /** 6019 * Initializes and caches "PROCESS_TEXT" accessibility actions. 6020 */ 6021 public void initializeAccessibilityActions() { 6022 mAccessibilityIntents.clear(); 6023 mAccessibilityActions.clear(); 6024 int i = 0; 6025 for (ResolveInfo resolveInfo : getSupportedActivities()) { 6026 int actionId = TextView.ACCESSIBILITY_ACTION_PROCESS_TEXT_START_ID + i++; 6027 mAccessibilityActions.put( 6028 actionId, 6029 new AccessibilityNodeInfo.AccessibilityAction( 6030 actionId, getLabel(resolveInfo))); 6031 mAccessibilityIntents.put( 6032 actionId, createProcessTextIntentForResolveInfo(resolveInfo)); 6033 } 6034 } 6035 6036 /** 6037 * Adds "PROCESS_TEXT" accessibility actions to the specified accessibility node info. 6038 * NOTE: This needs a prior call to {@link #initializeAccessibilityActions()} to make the 6039 * latest accessibility actions available for this call. 6040 */ 6041 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo nodeInfo) { 6042 for (int i = 0; i < mAccessibilityActions.size(); i++) { 6043 nodeInfo.addAction(mAccessibilityActions.valueAt(i)); 6044 } 6045 } 6046 6047 /** 6048 * Performs a "PROCESS_TEXT" action if there is one associated with the specified 6049 * accessibility action id. 6050 * 6051 * @return True if the action was performed, false otherwise. 6052 */ 6053 public boolean performAccessibilityAction(int actionId) { 6054 return fireIntent(mAccessibilityIntents.get(actionId)); 6055 } 6056 6057 private boolean fireIntent(Intent intent) { 6058 if (intent != null && Intent.ACTION_PROCESS_TEXT.equals(intent.getAction())) { 6059 intent.putExtra(Intent.EXTRA_PROCESS_TEXT, mTextView.getSelectedText()); 6060 mEditor.mPreserveSelection = true; 6061 mTextView.startActivityForResult(intent, TextView.PROCESS_TEXT_REQUEST_CODE); 6062 return true; 6063 } 6064 return false; 6065 } 6066 6067 private List<ResolveInfo> getSupportedActivities() { 6068 PackageManager packageManager = mTextView.getContext().getPackageManager(); 6069 return packageManager.queryIntentActivities(createProcessTextIntent(), 0); 6070 } 6071 6072 private Intent createProcessTextIntentForResolveInfo(ResolveInfo info) { 6073 return createProcessTextIntent() 6074 .putExtra(Intent.EXTRA_PROCESS_TEXT_READONLY, !mTextView.isTextEditable()) 6075 .setClassName(info.activityInfo.packageName, info.activityInfo.name); 6076 } 6077 6078 private Intent createProcessTextIntent() { 6079 return new Intent() 6080 .setAction(Intent.ACTION_PROCESS_TEXT) 6081 .setType("text/plain"); 6082 } 6083 6084 private CharSequence getLabel(ResolveInfo resolveInfo) { 6085 return resolveInfo.loadLabel(mPackageManager); 6086 } 6087 } 6088} 6089