Editor.java revision af4caa60064d95aeffc7ab81095a269893f5f2a1
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.Nullable; 22import android.app.PendingIntent; 23import android.app.PendingIntent.CanceledException; 24import android.content.ClipData; 25import android.content.ClipData.Item; 26import android.content.Context; 27import android.content.Intent; 28import android.content.UndoManager; 29import android.content.UndoOperation; 30import android.content.UndoOwner; 31import android.content.pm.PackageManager; 32import android.content.pm.ResolveInfo; 33import android.content.res.TypedArray; 34import android.graphics.Canvas; 35import android.graphics.Color; 36import android.graphics.Matrix; 37import android.graphics.Paint; 38import android.graphics.Path; 39import android.graphics.Rect; 40import android.graphics.RectF; 41import android.graphics.drawable.ColorDrawable; 42import android.graphics.drawable.Drawable; 43import android.os.Bundle; 44import android.os.Parcel; 45import android.os.Parcelable; 46import android.os.ParcelableParcel; 47import android.os.SystemClock; 48import android.provider.Settings; 49import android.text.DynamicLayout; 50import android.text.Editable; 51import android.text.InputFilter; 52import android.text.InputType; 53import android.text.Layout; 54import android.text.ParcelableSpan; 55import android.text.Selection; 56import android.text.SpanWatcher; 57import android.text.Spannable; 58import android.text.SpannableStringBuilder; 59import android.text.Spanned; 60import android.text.StaticLayout; 61import android.text.TextUtils; 62import android.text.method.KeyListener; 63import android.text.method.MetaKeyKeyListener; 64import android.text.method.MovementMethod; 65import android.text.method.WordIterator; 66import android.text.style.EasyEditSpan; 67import android.text.style.SuggestionRangeSpan; 68import android.text.style.SuggestionSpan; 69import android.text.style.TextAppearanceSpan; 70import android.text.style.URLSpan; 71import android.util.DisplayMetrics; 72import android.util.LocaleList; 73import android.util.Log; 74import android.util.SparseArray; 75import android.view.ActionMode; 76import android.view.ActionMode.Callback; 77import android.view.ContextMenu; 78import android.view.DisplayListCanvas; 79import android.view.DragEvent; 80import android.view.DropPermissions; 81import android.view.Gravity; 82import android.view.InputDevice; 83import android.view.LayoutInflater; 84import android.view.Menu; 85import android.view.MenuItem; 86import android.view.MotionEvent; 87import android.view.RenderNode; 88import android.view.SubMenu; 89import android.view.View; 90import android.view.View.DragShadowBuilder; 91import android.view.View.OnClickListener; 92import android.view.ViewConfiguration; 93import android.view.ViewGroup; 94import android.view.ViewGroup.LayoutParams; 95import android.view.ViewParent; 96import android.view.ViewTreeObserver; 97import android.view.WindowManager; 98import android.view.accessibility.AccessibilityNodeInfo; 99import android.view.inputmethod.CorrectionInfo; 100import android.view.inputmethod.CursorAnchorInfo; 101import android.view.inputmethod.EditorInfo; 102import android.view.inputmethod.ExtractedText; 103import android.view.inputmethod.ExtractedTextRequest; 104import android.view.inputmethod.InputConnection; 105import android.view.inputmethod.InputMethodManager; 106import android.widget.AdapterView.OnItemClickListener; 107import android.widget.TextView.Drawables; 108import android.widget.TextView.OnEditorActionListener; 109 110import com.android.internal.annotations.VisibleForTesting; 111import com.android.internal.util.ArrayUtils; 112import com.android.internal.util.GrowingArrayUtils; 113import com.android.internal.util.Preconditions; 114import com.android.internal.widget.EditableInputConnection; 115 116import java.lang.annotation.Retention; 117import java.lang.annotation.RetentionPolicy; 118import java.text.BreakIterator; 119import java.util.Arrays; 120import java.util.Comparator; 121import java.util.HashMap; 122import java.util.List; 123 124 125/** 126 * Helper class used by TextView to handle editable text views. 127 * 128 * @hide 129 */ 130public class Editor { 131 private static final String TAG = "Editor"; 132 private static final boolean DEBUG_UNDO = false; 133 134 static final int BLINK = 500; 135 private static final float[] TEMP_POSITION = new float[2]; 136 private static int DRAG_SHADOW_MAX_TEXT_LENGTH = 20; 137 private static final float LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS = 0.5f; 138 private static final int UNSET_X_VALUE = -1; 139 private static final int UNSET_LINE = -1; 140 // Tag used when the Editor maintains its own separate UndoManager. 141 private static final String UNDO_OWNER_TAG = "Editor"; 142 143 // Ordering constants used to place the Action Mode or context menu items in their menu. 144 private static final int MENU_ITEM_ORDER_UNDO = 1; 145 private static final int MENU_ITEM_ORDER_REDO = 2; 146 private static final int MENU_ITEM_ORDER_CUT = 3; 147 private static final int MENU_ITEM_ORDER_COPY = 4; 148 private static final int MENU_ITEM_ORDER_PASTE = 5; 149 private static final int MENU_ITEM_ORDER_PASTE_AS_PLAIN_TEXT = 6; 150 private static final int MENU_ITEM_ORDER_SHARE = 7; 151 private static final int MENU_ITEM_ORDER_SELECT_ALL = 8; 152 private static final int MENU_ITEM_ORDER_REPLACE = 9; 153 private static final int MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START = 10; 154 155 // Each Editor manages its own undo stack. 156 private final UndoManager mUndoManager = new UndoManager(); 157 private UndoOwner mUndoOwner = mUndoManager.getOwner(UNDO_OWNER_TAG, this); 158 final UndoInputFilter mUndoInputFilter = new UndoInputFilter(this); 159 boolean mAllowUndo = true; 160 161 // Cursor Controllers. 162 InsertionPointCursorController mInsertionPointCursorController; 163 SelectionModifierCursorController mSelectionModifierCursorController; 164 // Action mode used when text is selected or when actions on an insertion cursor are triggered. 165 ActionMode mTextActionMode; 166 boolean mInsertionControllerEnabled; 167 boolean mSelectionControllerEnabled; 168 169 // Used to highlight a word when it is corrected by the IME 170 CorrectionHighlighter mCorrectionHighlighter; 171 172 InputContentType mInputContentType; 173 InputMethodState mInputMethodState; 174 175 private static class TextRenderNode { 176 RenderNode renderNode; 177 boolean isDirty; 178 public TextRenderNode(String name) { 179 isDirty = true; 180 renderNode = RenderNode.create(name, null); 181 } 182 boolean needsRecord() { return isDirty || !renderNode.isValid(); } 183 } 184 TextRenderNode[] mTextRenderNodes; 185 186 boolean mFrozenWithFocus; 187 boolean mSelectionMoved; 188 boolean mTouchFocusSelected; 189 190 KeyListener mKeyListener; 191 int mInputType = EditorInfo.TYPE_NULL; 192 193 boolean mDiscardNextActionUp; 194 boolean mIgnoreActionUpEvent; 195 private boolean mIgnoreNextMouseActionUpOrDown; 196 197 long mShowCursor; 198 Blink mBlink; 199 200 boolean mCursorVisible = true; 201 boolean mSelectAllOnFocus; 202 boolean mTextIsSelectable; 203 204 CharSequence mError; 205 boolean mErrorWasChanged; 206 ErrorPopup mErrorPopup; 207 208 /** 209 * This flag is set if the TextView tries to display an error before it 210 * is attached to the window (so its position is still unknown). 211 * It causes the error to be shown later, when onAttachedToWindow() 212 * is called. 213 */ 214 boolean mShowErrorAfterAttach; 215 216 boolean mInBatchEditControllers; 217 boolean mShowSoftInputOnFocus = true; 218 private boolean mPreserveSelection; 219 boolean mTemporaryDetach; 220 221 boolean mIsBeingLongClicked; 222 223 SuggestionsPopupWindow mSuggestionsPopupWindow; 224 SuggestionRangeSpan mSuggestionRangeSpan; 225 Runnable mShowSuggestionRunnable; 226 227 final Drawable[] mCursorDrawable = new Drawable[2]; 228 int mCursorCount; // Current number of used mCursorDrawable: 0 (resource=0), 1 or 2 (split) 229 230 private Drawable mSelectHandleLeft; 231 private Drawable mSelectHandleRight; 232 private Drawable mSelectHandleCenter; 233 234 // Global listener that detects changes in the global position of the TextView 235 private PositionListener mPositionListener; 236 237 float mLastDownPositionX, mLastDownPositionY; 238 private float mContextMenuAnchorX, mContextMenuAnchorY; 239 Callback mCustomSelectionActionModeCallback; 240 Callback mCustomInsertionActionModeCallback; 241 242 // Set when this TextView gained focus with some text selected. Will start selection mode. 243 boolean mCreatedWithASelection; 244 245 // Indicates the current tap state (first tap, double tap, or triple click). 246 private int mTapState = TAP_STATE_INITIAL; 247 private long mLastTouchUpTime = 0; 248 private static final int TAP_STATE_INITIAL = 0; 249 private static final int TAP_STATE_FIRST_TAP = 1; 250 private static final int TAP_STATE_DOUBLE_TAP = 2; 251 // Only for mouse input. 252 private static final int TAP_STATE_TRIPLE_CLICK = 3; 253 254 // The button state as of the last time #onTouchEvent is called. 255 private int mLastButtonState; 256 257 private Runnable mInsertionActionModeRunnable; 258 259 // The span controller helps monitoring the changes to which the Editor needs to react: 260 // - EasyEditSpans, for which we have some UI to display on attach and on hide 261 // - SelectionSpans, for which we need to call updateSelection if an IME is attached 262 private SpanController mSpanController; 263 264 WordIterator mWordIterator; 265 SpellChecker mSpellChecker; 266 267 // This word iterator is set with text and used to determine word boundaries 268 // when a user is selecting text. 269 private WordIterator mWordIteratorWithText; 270 // Indicate that the text in the word iterator needs to be updated. 271 private boolean mUpdateWordIteratorText; 272 273 private Rect mTempRect; 274 275 private TextView mTextView; 276 277 final ProcessTextIntentActionsHandler mProcessTextIntentActionsHandler; 278 279 final CursorAnchorInfoNotifier mCursorAnchorInfoNotifier = new CursorAnchorInfoNotifier(); 280 281 private final Runnable mShowFloatingToolbar = new Runnable() { 282 @Override 283 public void run() { 284 if (mTextActionMode != null) { 285 mTextActionMode.hide(0); // hide off. 286 } 287 } 288 }; 289 290 boolean mIsInsertionActionModeStartPending = false; 291 292 private final SuggestionHelper mSuggestionHelper = new SuggestionHelper(); 293 private SuggestionInfo[] mSuggestionInfosInContextMenu; 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 int middle = (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 355 Selection.setSelection((Spannable) mTextView.getText(), middle); 356 showSuggestions(); 357 } 358 359 void onAttachedToWindow() { 360 if (mShowErrorAfterAttach) { 361 showError(); 362 mShowErrorAfterAttach = false; 363 } 364 mTemporaryDetach = false; 365 366 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 367 // No need to create the controller. 368 // The get method will add the listener on controller creation. 369 if (mInsertionPointCursorController != null) { 370 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 371 } 372 if (mSelectionModifierCursorController != null) { 373 mSelectionModifierCursorController.resetTouchOffsets(); 374 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 375 } 376 updateSpellCheckSpans(0, mTextView.getText().length(), 377 true /* create the spell checker if needed */); 378 379 if (mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 380 // We had an active selection from before, start the selection mode. 381 startSelectionActionMode(); 382 } 383 384 getPositionListener().addSubscriber(mCursorAnchorInfoNotifier, true); 385 resumeBlink(); 386 } 387 388 void onDetachedFromWindow() { 389 getPositionListener().removeSubscriber(mCursorAnchorInfoNotifier); 390 391 if (mError != null) { 392 hideError(); 393 } 394 395 suspendBlink(); 396 397 if (mInsertionPointCursorController != null) { 398 mInsertionPointCursorController.onDetached(); 399 } 400 401 if (mSelectionModifierCursorController != null) { 402 mSelectionModifierCursorController.onDetached(); 403 } 404 405 if (mShowSuggestionRunnable != null) { 406 mTextView.removeCallbacks(mShowSuggestionRunnable); 407 } 408 409 // Cancel the single tap delayed runnable. 410 if (mInsertionActionModeRunnable != null) { 411 mTextView.removeCallbacks(mInsertionActionModeRunnable); 412 } 413 414 mTextView.removeCallbacks(mShowFloatingToolbar); 415 416 discardTextDisplayLists(); 417 418 if (mSpellChecker != null) { 419 mSpellChecker.closeSession(); 420 // Forces the creation of a new SpellChecker next time this window is created. 421 // Will handle the cases where the settings has been changed in the meantime. 422 mSpellChecker = null; 423 } 424 425 hideCursorAndSpanControllers(); 426 stopTextActionModeWithPreservingSelection(); 427 mTemporaryDetach = false; 428 } 429 430 private void discardTextDisplayLists() { 431 if (mTextRenderNodes != null) { 432 for (int i = 0; i < mTextRenderNodes.length; i++) { 433 RenderNode displayList = mTextRenderNodes[i] != null 434 ? mTextRenderNodes[i].renderNode : null; 435 if (displayList != null && displayList.isValid()) { 436 displayList.discardDisplayList(); 437 } 438 } 439 } 440 } 441 442 private void showError() { 443 if (mTextView.getWindowToken() == null) { 444 mShowErrorAfterAttach = true; 445 return; 446 } 447 448 if (mErrorPopup == null) { 449 LayoutInflater inflater = LayoutInflater.from(mTextView.getContext()); 450 final TextView err = (TextView) inflater.inflate( 451 com.android.internal.R.layout.textview_hint, null); 452 453 final float scale = mTextView.getResources().getDisplayMetrics().density; 454 mErrorPopup = new ErrorPopup(err, (int)(200 * scale + 0.5f), (int)(50 * scale + 0.5f)); 455 mErrorPopup.setFocusable(false); 456 // The user is entering text, so the input method is needed. We 457 // don't want the popup to be displayed on top of it. 458 mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); 459 } 460 461 TextView tv = (TextView) mErrorPopup.getContentView(); 462 chooseSize(mErrorPopup, mError, tv); 463 tv.setText(mError); 464 465 mErrorPopup.showAsDropDown(mTextView, getErrorX(), getErrorY()); 466 mErrorPopup.fixDirection(mErrorPopup.isAboveAnchor()); 467 } 468 469 public void setError(CharSequence error, Drawable icon) { 470 mError = TextUtils.stringOrSpannedString(error); 471 mErrorWasChanged = true; 472 473 if (mError == null) { 474 setErrorIcon(null); 475 if (mErrorPopup != null) { 476 if (mErrorPopup.isShowing()) { 477 mErrorPopup.dismiss(); 478 } 479 480 mErrorPopup = null; 481 } 482 mShowErrorAfterAttach = false; 483 } else { 484 setErrorIcon(icon); 485 if (mTextView.isFocused()) { 486 showError(); 487 } 488 } 489 } 490 491 private void setErrorIcon(Drawable icon) { 492 Drawables dr = mTextView.mDrawables; 493 if (dr == null) { 494 mTextView.mDrawables = dr = new Drawables(mTextView.getContext()); 495 } 496 dr.setErrorDrawable(icon, mTextView); 497 498 mTextView.resetResolvedDrawables(); 499 mTextView.invalidate(); 500 mTextView.requestLayout(); 501 } 502 503 private void hideError() { 504 if (mErrorPopup != null) { 505 if (mErrorPopup.isShowing()) { 506 mErrorPopup.dismiss(); 507 } 508 } 509 510 mShowErrorAfterAttach = false; 511 } 512 513 /** 514 * Returns the X offset to make the pointy top of the error point 515 * at the middle of the error icon. 516 */ 517 private int getErrorX() { 518 /* 519 * The "25" is the distance between the point and the right edge 520 * of the background 521 */ 522 final float scale = mTextView.getResources().getDisplayMetrics().density; 523 524 final Drawables dr = mTextView.mDrawables; 525 526 final int layoutDirection = mTextView.getLayoutDirection(); 527 int errorX; 528 int offset; 529 switch (layoutDirection) { 530 default: 531 case View.LAYOUT_DIRECTION_LTR: 532 offset = - (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f); 533 errorX = mTextView.getWidth() - mErrorPopup.getWidth() - 534 mTextView.getPaddingRight() + offset; 535 break; 536 case View.LAYOUT_DIRECTION_RTL: 537 offset = (dr != null ? dr.mDrawableSizeLeft : 0) / 2 - (int) (25 * scale + 0.5f); 538 errorX = mTextView.getPaddingLeft() + offset; 539 break; 540 } 541 return errorX; 542 } 543 544 /** 545 * Returns the Y offset to make the pointy top of the error point 546 * at the bottom of the error icon. 547 */ 548 private int getErrorY() { 549 /* 550 * Compound, not extended, because the icon is not clipped 551 * if the text height is smaller. 552 */ 553 final int compoundPaddingTop = mTextView.getCompoundPaddingTop(); 554 int vspace = mTextView.getBottom() - mTextView.getTop() - 555 mTextView.getCompoundPaddingBottom() - compoundPaddingTop; 556 557 final Drawables dr = mTextView.mDrawables; 558 559 final int layoutDirection = mTextView.getLayoutDirection(); 560 int height; 561 switch (layoutDirection) { 562 default: 563 case View.LAYOUT_DIRECTION_LTR: 564 height = (dr != null ? dr.mDrawableHeightRight : 0); 565 break; 566 case View.LAYOUT_DIRECTION_RTL: 567 height = (dr != null ? dr.mDrawableHeightLeft : 0); 568 break; 569 } 570 571 int icontop = compoundPaddingTop + (vspace - height) / 2; 572 573 /* 574 * The "2" is the distance between the point and the top edge 575 * of the background. 576 */ 577 final float scale = mTextView.getResources().getDisplayMetrics().density; 578 return icontop + height - mTextView.getHeight() - (int) (2 * scale + 0.5f); 579 } 580 581 void createInputContentTypeIfNeeded() { 582 if (mInputContentType == null) { 583 mInputContentType = new InputContentType(); 584 } 585 } 586 587 void createInputMethodStateIfNeeded() { 588 if (mInputMethodState == null) { 589 mInputMethodState = new InputMethodState(); 590 } 591 } 592 593 boolean isCursorVisible() { 594 // The default value is true, even when there is no associated Editor 595 return mCursorVisible && mTextView.isTextEditable(); 596 } 597 598 void prepareCursorControllers() { 599 boolean windowSupportsHandles = false; 600 601 ViewGroup.LayoutParams params = mTextView.getRootView().getLayoutParams(); 602 if (params instanceof WindowManager.LayoutParams) { 603 WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params; 604 windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW 605 || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW; 606 } 607 608 boolean enabled = windowSupportsHandles && mTextView.getLayout() != null; 609 mInsertionControllerEnabled = enabled && isCursorVisible(); 610 mSelectionControllerEnabled = enabled && mTextView.textCanBeSelected(); 611 612 if (!mInsertionControllerEnabled) { 613 hideInsertionPointCursorController(); 614 if (mInsertionPointCursorController != null) { 615 mInsertionPointCursorController.onDetached(); 616 mInsertionPointCursorController = null; 617 } 618 } 619 620 if (!mSelectionControllerEnabled) { 621 stopTextActionMode(); 622 if (mSelectionModifierCursorController != null) { 623 mSelectionModifierCursorController.onDetached(); 624 mSelectionModifierCursorController = null; 625 } 626 } 627 } 628 629 void hideInsertionPointCursorController() { 630 if (mInsertionPointCursorController != null) { 631 mInsertionPointCursorController.hide(); 632 } 633 } 634 635 /** 636 * Hides the insertion and span controllers. 637 */ 638 void hideCursorAndSpanControllers() { 639 hideCursorControllers(); 640 hideSpanControllers(); 641 } 642 643 private void hideSpanControllers() { 644 if (mSpanController != null) { 645 mSpanController.hide(); 646 } 647 } 648 649 private void hideCursorControllers() { 650 // When mTextView is not ExtractEditText, we need to distinguish two kinds of focus-lost. 651 // One is the true focus lost where suggestions pop-up (if any) should be dismissed, and the 652 // other is an side effect of showing the suggestions pop-up itself. We use isShowingUp() 653 // to distinguish one from the other. 654 if (mSuggestionsPopupWindow != null && ((mTextView.isInExtractedMode()) || 655 !mSuggestionsPopupWindow.isShowingUp())) { 656 // Should be done before hide insertion point controller since it triggers a show of it 657 mSuggestionsPopupWindow.hide(); 658 } 659 hideInsertionPointCursorController(); 660 } 661 662 /** 663 * Create new SpellCheckSpans on the modified region. 664 */ 665 private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) { 666 // Remove spans whose adjacent characters are text not punctuation 667 mTextView.removeAdjacentSuggestionSpans(start); 668 mTextView.removeAdjacentSuggestionSpans(end); 669 670 if (mTextView.isTextEditable() && mTextView.isSuggestionsEnabled() && 671 !(mTextView.isInExtractedMode())) { 672 if (mSpellChecker == null && createSpellChecker) { 673 mSpellChecker = new SpellChecker(mTextView); 674 } 675 if (mSpellChecker != null) { 676 mSpellChecker.spellCheck(start, end); 677 } 678 } 679 } 680 681 void onScreenStateChanged(int screenState) { 682 switch (screenState) { 683 case View.SCREEN_STATE_ON: 684 resumeBlink(); 685 break; 686 case View.SCREEN_STATE_OFF: 687 suspendBlink(); 688 break; 689 } 690 } 691 692 private void suspendBlink() { 693 if (mBlink != null) { 694 mBlink.cancel(); 695 } 696 } 697 698 private void resumeBlink() { 699 if (mBlink != null) { 700 mBlink.uncancel(); 701 makeBlink(); 702 } 703 } 704 705 void adjustInputType(boolean password, boolean passwordInputType, 706 boolean webPasswordInputType, boolean numberPasswordInputType) { 707 // mInputType has been set from inputType, possibly modified by mInputMethod. 708 // Specialize mInputType to [web]password if we have a text class and the original input 709 // type was a password. 710 if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 711 if (password || passwordInputType) { 712 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 713 | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD; 714 } 715 if (webPasswordInputType) { 716 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 717 | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 718 } 719 } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) { 720 if (numberPasswordInputType) { 721 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 722 | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD; 723 } 724 } 725 } 726 727 private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) { 728 int wid = tv.getPaddingLeft() + tv.getPaddingRight(); 729 int ht = tv.getPaddingTop() + tv.getPaddingBottom(); 730 731 int defaultWidthInPixels = mTextView.getResources().getDimensionPixelSize( 732 com.android.internal.R.dimen.textview_error_popup_default_width); 733 Layout l = new StaticLayout(text, tv.getPaint(), defaultWidthInPixels, 734 Layout.Alignment.ALIGN_NORMAL, 1, 0, true); 735 float max = 0; 736 for (int i = 0; i < l.getLineCount(); i++) { 737 max = Math.max(max, l.getLineWidth(i)); 738 } 739 740 /* 741 * Now set the popup size to be big enough for the text plus the border capped 742 * to DEFAULT_MAX_POPUP_WIDTH 743 */ 744 pop.setWidth(wid + (int) Math.ceil(max)); 745 pop.setHeight(ht + l.getHeight()); 746 } 747 748 void setFrame() { 749 if (mErrorPopup != null) { 750 TextView tv = (TextView) mErrorPopup.getContentView(); 751 chooseSize(mErrorPopup, mError, tv); 752 mErrorPopup.update(mTextView, getErrorX(), getErrorY(), 753 mErrorPopup.getWidth(), mErrorPopup.getHeight()); 754 } 755 } 756 757 private int getWordStart(int offset) { 758 // FIXME - For this and similar methods we're not doing anything to check if there's 759 // a LocaleSpan in the text, this may be something we should try handling or checking for. 760 int retOffset = getWordIteratorWithText().prevBoundary(offset); 761 if (getWordIteratorWithText().isOnPunctuation(retOffset)) { 762 // On punctuation boundary or within group of punctuation, find punctuation start. 763 retOffset = getWordIteratorWithText().getPunctuationBeginning(offset); 764 } else { 765 // Not on a punctuation boundary, find the word start. 766 retOffset = getWordIteratorWithText().getPrevWordBeginningOnTwoWordsBoundary(offset); 767 } 768 if (retOffset == BreakIterator.DONE) { 769 return offset; 770 } 771 return retOffset; 772 } 773 774 private int getWordEnd(int offset) { 775 int retOffset = getWordIteratorWithText().nextBoundary(offset); 776 if (getWordIteratorWithText().isAfterPunctuation(retOffset)) { 777 // On punctuation boundary or within group of punctuation, find punctuation end. 778 retOffset = getWordIteratorWithText().getPunctuationEnd(offset); 779 } else { 780 // Not on a punctuation boundary, find the word end. 781 retOffset = getWordIteratorWithText().getNextWordEndOnTwoWordBoundary(offset); 782 } 783 if (retOffset == BreakIterator.DONE) { 784 return offset; 785 } 786 return retOffset; 787 } 788 789 private boolean needsToSelectAllToSelectWordOrParagraph() { 790 if (mTextView.hasPasswordTransformationMethod()) { 791 // Always select all on a password field. 792 // Cut/copy menu entries are not available for passwords, but being able to select all 793 // is however useful to delete or paste to replace the entire content. 794 return true; 795 } 796 797 int inputType = mTextView.getInputType(); 798 int klass = inputType & InputType.TYPE_MASK_CLASS; 799 int variation = inputType & InputType.TYPE_MASK_VARIATION; 800 801 // Specific text field types: select the entire text for these 802 if (klass == InputType.TYPE_CLASS_NUMBER || 803 klass == InputType.TYPE_CLASS_PHONE || 804 klass == InputType.TYPE_CLASS_DATETIME || 805 variation == InputType.TYPE_TEXT_VARIATION_URI || 806 variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS || 807 variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS || 808 variation == InputType.TYPE_TEXT_VARIATION_FILTER) { 809 return true; 810 } 811 return false; 812 } 813 814 /** 815 * Adjusts selection to the word under last touch offset. Return true if the operation was 816 * successfully performed. 817 */ 818 private boolean selectCurrentWord() { 819 if (!mTextView.canSelectText()) { 820 return false; 821 } 822 823 if (needsToSelectAllToSelectWordOrParagraph()) { 824 return mTextView.selectAllText(); 825 } 826 827 long lastTouchOffsets = getLastTouchOffsets(); 828 final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 829 final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 830 831 // Safety check in case standard touch event handling has been bypassed 832 if (minOffset < 0 || minOffset > mTextView.getText().length()) return false; 833 if (maxOffset < 0 || maxOffset > mTextView.getText().length()) return false; 834 835 int selectionStart, selectionEnd; 836 837 // If a URLSpan (web address, email, phone...) is found at that position, select it. 838 URLSpan[] urlSpans = ((Spanned) mTextView.getText()). 839 getSpans(minOffset, maxOffset, URLSpan.class); 840 if (urlSpans.length >= 1) { 841 URLSpan urlSpan = urlSpans[0]; 842 selectionStart = ((Spanned) mTextView.getText()).getSpanStart(urlSpan); 843 selectionEnd = ((Spanned) mTextView.getText()).getSpanEnd(urlSpan); 844 } else { 845 // FIXME - We should check if there's a LocaleSpan in the text, this may be 846 // something we should try handling or checking for. 847 final WordIterator wordIterator = getWordIterator(); 848 wordIterator.setCharSequence(mTextView.getText(), minOffset, maxOffset); 849 850 selectionStart = wordIterator.getBeginning(minOffset); 851 selectionEnd = wordIterator.getEnd(maxOffset); 852 853 if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE || 854 selectionStart == selectionEnd) { 855 // Possible when the word iterator does not properly handle the text's language 856 long range = getCharClusterRange(minOffset); 857 selectionStart = TextUtils.unpackRangeStartFromLong(range); 858 selectionEnd = TextUtils.unpackRangeEndFromLong(range); 859 } 860 } 861 862 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 863 return selectionEnd > selectionStart; 864 } 865 866 /** 867 * Adjusts selection to the paragraph under last touch offset. Return true if the operation was 868 * successfully performed. 869 */ 870 private boolean selectCurrentParagraph() { 871 if (!mTextView.canSelectText()) { 872 return false; 873 } 874 875 if (needsToSelectAllToSelectWordOrParagraph()) { 876 return mTextView.selectAllText(); 877 } 878 879 long lastTouchOffsets = getLastTouchOffsets(); 880 final int minLastTouchOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 881 final int maxLastTouchOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 882 883 final long paragraphsRange = getParagraphsRange(minLastTouchOffset, maxLastTouchOffset); 884 final int start = TextUtils.unpackRangeStartFromLong(paragraphsRange); 885 final int end = TextUtils.unpackRangeEndFromLong(paragraphsRange); 886 if (start < end) { 887 Selection.setSelection((Spannable) mTextView.getText(), start, end); 888 return true; 889 } 890 return false; 891 } 892 893 /** 894 * Get the minimum range of paragraphs that contains startOffset and endOffset. 895 */ 896 private long getParagraphsRange(int startOffset, int endOffset) { 897 final Layout layout = mTextView.getLayout(); 898 if (layout == null) { 899 return TextUtils.packRangeInLong(-1, -1); 900 } 901 final CharSequence text = mTextView.getText(); 902 int minLine = layout.getLineForOffset(startOffset); 903 // Search paragraph start. 904 while (minLine > 0) { 905 final int prevLineEndOffset = layout.getLineEnd(minLine - 1); 906 if (text.charAt(prevLineEndOffset - 1) == '\n') { 907 break; 908 } 909 minLine--; 910 } 911 int maxLine = layout.getLineForOffset(endOffset); 912 // Search paragraph end. 913 while (maxLine < layout.getLineCount() - 1) { 914 final int lineEndOffset = layout.getLineEnd(maxLine); 915 if (text.charAt(lineEndOffset - 1) == '\n') { 916 break; 917 } 918 maxLine++; 919 } 920 return TextUtils.packRangeInLong(layout.getLineStart(minLine), layout.getLineEnd(maxLine)); 921 } 922 923 void onLocaleChanged() { 924 // Will be re-created on demand in getWordIterator with the proper new locale 925 mWordIterator = null; 926 mWordIteratorWithText = null; 927 } 928 929 /** 930 * @hide 931 */ 932 public WordIterator getWordIterator() { 933 if (mWordIterator == null) { 934 mWordIterator = new WordIterator(mTextView.getTextServicesLocale()); 935 } 936 return mWordIterator; 937 } 938 939 private WordIterator getWordIteratorWithText() { 940 if (mWordIteratorWithText == null) { 941 mWordIteratorWithText = new WordIterator(mTextView.getTextServicesLocale()); 942 mUpdateWordIteratorText = true; 943 } 944 if (mUpdateWordIteratorText) { 945 // FIXME - Shouldn't copy all of the text as only the area of the text relevant 946 // to the user's selection is needed. A possible solution would be to 947 // copy some number N of characters near the selection and then when the 948 // user approaches N then we'd do another copy of the next N characters. 949 CharSequence text = mTextView.getText(); 950 mWordIteratorWithText.setCharSequence(text, 0, text.length()); 951 mUpdateWordIteratorText = false; 952 } 953 return mWordIteratorWithText; 954 } 955 956 private int getNextCursorOffset(int offset, boolean findAfterGivenOffset) { 957 final Layout layout = mTextView.getLayout(); 958 if (layout == null) return offset; 959 final CharSequence text = mTextView.getText(); 960 final int nextOffset = layout.getPaint().getTextRunCursor(text, 0, text.length(), 961 layout.isRtlCharAt(offset) ? Paint.DIRECTION_RTL : Paint.DIRECTION_LTR, 962 offset, findAfterGivenOffset ? Paint.CURSOR_AFTER : Paint.CURSOR_BEFORE); 963 return nextOffset == -1 ? offset : nextOffset; 964 } 965 966 private long getCharClusterRange(int offset) { 967 final int textLength = mTextView.getText().length(); 968 if (offset < textLength) { 969 return TextUtils.packRangeInLong(offset, getNextCursorOffset(offset, true)); 970 } 971 if (offset - 1 >= 0) { 972 return TextUtils.packRangeInLong(getNextCursorOffset(offset, false), offset); 973 } 974 return TextUtils.packRangeInLong(offset, offset); 975 } 976 977 private boolean touchPositionIsInSelection() { 978 int selectionStart = mTextView.getSelectionStart(); 979 int selectionEnd = mTextView.getSelectionEnd(); 980 981 if (selectionStart == selectionEnd) { 982 return false; 983 } 984 985 if (selectionStart > selectionEnd) { 986 int tmp = selectionStart; 987 selectionStart = selectionEnd; 988 selectionEnd = tmp; 989 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 990 } 991 992 SelectionModifierCursorController selectionController = getSelectionController(); 993 int minOffset = selectionController.getMinTouchOffset(); 994 int maxOffset = selectionController.getMaxTouchOffset(); 995 996 return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); 997 } 998 999 private PositionListener getPositionListener() { 1000 if (mPositionListener == null) { 1001 mPositionListener = new PositionListener(); 1002 } 1003 return mPositionListener; 1004 } 1005 1006 private interface TextViewPositionListener { 1007 public void updatePosition(int parentPositionX, int parentPositionY, 1008 boolean parentPositionChanged, boolean parentScrolled); 1009 } 1010 1011 private boolean isPositionVisible(final float positionX, final float positionY) { 1012 synchronized (TEMP_POSITION) { 1013 final float[] position = TEMP_POSITION; 1014 position[0] = positionX; 1015 position[1] = positionY; 1016 View view = mTextView; 1017 1018 while (view != null) { 1019 if (view != mTextView) { 1020 // Local scroll is already taken into account in positionX/Y 1021 position[0] -= view.getScrollX(); 1022 position[1] -= view.getScrollY(); 1023 } 1024 1025 if (position[0] < 0 || position[1] < 0 || 1026 position[0] > view.getWidth() || position[1] > view.getHeight()) { 1027 return false; 1028 } 1029 1030 if (!view.getMatrix().isIdentity()) { 1031 view.getMatrix().mapPoints(position); 1032 } 1033 1034 position[0] += view.getLeft(); 1035 position[1] += view.getTop(); 1036 1037 final ViewParent parent = view.getParent(); 1038 if (parent instanceof View) { 1039 view = (View) parent; 1040 } else { 1041 // We've reached the ViewRoot, stop iterating 1042 view = null; 1043 } 1044 } 1045 } 1046 1047 // We've been able to walk up the view hierarchy and the position was never clipped 1048 return true; 1049 } 1050 1051 private boolean isOffsetVisible(int offset) { 1052 Layout layout = mTextView.getLayout(); 1053 if (layout == null) return false; 1054 1055 final int line = layout.getLineForOffset(offset); 1056 final int lineBottom = layout.getLineBottom(line); 1057 final int primaryHorizontal = (int) layout.getPrimaryHorizontal(offset); 1058 return isPositionVisible(primaryHorizontal + mTextView.viewportToContentHorizontalOffset(), 1059 lineBottom + mTextView.viewportToContentVerticalOffset()); 1060 } 1061 1062 /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed 1063 * in the view. Returns false when the position is in the empty space of left/right of text. 1064 */ 1065 private boolean isPositionOnText(float x, float y) { 1066 Layout layout = mTextView.getLayout(); 1067 if (layout == null) return false; 1068 1069 final int line = mTextView.getLineAtCoordinate(y); 1070 x = mTextView.convertToLocalHorizontalCoordinate(x); 1071 1072 if (x < layout.getLineLeft(line)) return false; 1073 if (x > layout.getLineRight(line)) return false; 1074 return true; 1075 } 1076 1077 private void startDragAndDrop() { 1078 final int start = mTextView.getSelectionStart(); 1079 final int end = mTextView.getSelectionEnd(); 1080 CharSequence selectedText = mTextView.getTransformedText(start, end); 1081 ClipData data = ClipData.newPlainText(null, selectedText); 1082 DragLocalState localState = new DragLocalState(mTextView, start, end); 1083 mTextView.startDragAndDrop(data, getTextThumbnailBuilder(selectedText), localState, 1084 View.DRAG_FLAG_GLOBAL); 1085 stopTextActionMode(); 1086 if (hasSelectionController()) { 1087 getSelectionController().resetTouchOffsets(); 1088 } 1089 } 1090 1091 public boolean performLongClick(boolean handled) { 1092 // Long press in empty space moves cursor and starts the insertion action mode. 1093 if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) && 1094 mInsertionControllerEnabled) { 1095 final int offset = mTextView.getOffsetForPosition(mLastDownPositionX, 1096 mLastDownPositionY); 1097 Selection.setSelection((Spannable) mTextView.getText(), offset); 1098 getInsertionController().show(); 1099 mIsInsertionActionModeStartPending = true; 1100 handled = true; 1101 } 1102 1103 if (!handled && mTextActionMode != null) { 1104 if (touchPositionIsInSelection()) { 1105 startDragAndDrop(); 1106 } else { 1107 stopTextActionMode(); 1108 selectCurrentWordAndStartDrag(); 1109 } 1110 handled = true; 1111 } 1112 1113 // Start a new selection 1114 if (!handled) { 1115 handled = selectCurrentWordAndStartDrag(); 1116 } 1117 1118 return handled; 1119 } 1120 1121 private long getLastTouchOffsets() { 1122 SelectionModifierCursorController selectionController = getSelectionController(); 1123 final int minOffset = selectionController.getMinTouchOffset(); 1124 final int maxOffset = selectionController.getMaxTouchOffset(); 1125 return TextUtils.packRangeInLong(minOffset, maxOffset); 1126 } 1127 1128 void onFocusChanged(boolean focused, int direction) { 1129 mShowCursor = SystemClock.uptimeMillis(); 1130 ensureEndedBatchEdit(); 1131 1132 if (focused) { 1133 int selStart = mTextView.getSelectionStart(); 1134 int selEnd = mTextView.getSelectionEnd(); 1135 1136 // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection 1137 // mode for these, unless there was a specific selection already started. 1138 final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 && 1139 selEnd == mTextView.getText().length(); 1140 1141 mCreatedWithASelection = mFrozenWithFocus && mTextView.hasSelection() && 1142 !isFocusHighlighted; 1143 1144 if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { 1145 // If a tap was used to give focus to that view, move cursor at tap position. 1146 // Has to be done before onTakeFocus, which can be overloaded. 1147 final int lastTapPosition = getLastTapPosition(); 1148 if (lastTapPosition >= 0) { 1149 Selection.setSelection((Spannable) mTextView.getText(), lastTapPosition); 1150 } 1151 1152 // Note this may have to be moved out of the Editor class 1153 MovementMethod mMovement = mTextView.getMovementMethod(); 1154 if (mMovement != null) { 1155 mMovement.onTakeFocus(mTextView, (Spannable) mTextView.getText(), direction); 1156 } 1157 1158 // The DecorView does not have focus when the 'Done' ExtractEditText button is 1159 // pressed. Since it is the ViewAncestor's mView, it requests focus before 1160 // ExtractEditText clears focus, which gives focus to the ExtractEditText. 1161 // This special case ensure that we keep current selection in that case. 1162 // It would be better to know why the DecorView does not have focus at that time. 1163 if (((mTextView.isInExtractedMode()) || mSelectionMoved) && 1164 selStart >= 0 && selEnd >= 0) { 1165 /* 1166 * Someone intentionally set the selection, so let them 1167 * do whatever it is that they wanted to do instead of 1168 * the default on-focus behavior. We reset the selection 1169 * here instead of just skipping the onTakeFocus() call 1170 * because some movement methods do something other than 1171 * just setting the selection in theirs and we still 1172 * need to go through that path. 1173 */ 1174 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 1175 } 1176 1177 if (mSelectAllOnFocus) { 1178 mTextView.selectAllText(); 1179 } 1180 1181 mTouchFocusSelected = true; 1182 } 1183 1184 mFrozenWithFocus = false; 1185 mSelectionMoved = false; 1186 1187 if (mError != null) { 1188 showError(); 1189 } 1190 1191 makeBlink(); 1192 } else { 1193 if (mError != null) { 1194 hideError(); 1195 } 1196 // Don't leave us in the middle of a batch edit. 1197 mTextView.onEndBatchEdit(); 1198 1199 if (mTextView.isInExtractedMode()) { 1200 hideCursorAndSpanControllers(); 1201 stopTextActionModeWithPreservingSelection(); 1202 } else { 1203 hideCursorAndSpanControllers(); 1204 if (mTemporaryDetach) { 1205 stopTextActionModeWithPreservingSelection(); 1206 } else { 1207 stopTextActionMode(); 1208 } 1209 downgradeEasyCorrectionSpans(); 1210 } 1211 // No need to create the controller 1212 if (mSelectionModifierCursorController != null) { 1213 mSelectionModifierCursorController.resetTouchOffsets(); 1214 } 1215 } 1216 } 1217 1218 /** 1219 * Downgrades to simple suggestions all the easy correction spans that are not a spell check 1220 * span. 1221 */ 1222 private void downgradeEasyCorrectionSpans() { 1223 CharSequence text = mTextView.getText(); 1224 if (text instanceof Spannable) { 1225 Spannable spannable = (Spannable) text; 1226 SuggestionSpan[] suggestionSpans = spannable.getSpans(0, 1227 spannable.length(), SuggestionSpan.class); 1228 for (int i = 0; i < suggestionSpans.length; i++) { 1229 int flags = suggestionSpans[i].getFlags(); 1230 if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0 1231 && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) { 1232 flags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 1233 suggestionSpans[i].setFlags(flags); 1234 } 1235 } 1236 } 1237 } 1238 1239 void sendOnTextChanged(int start, int after) { 1240 updateSpellCheckSpans(start, start + after, false); 1241 1242 // Flip flag to indicate the word iterator needs to have the text reset. 1243 mUpdateWordIteratorText = true; 1244 1245 // Hide the controllers as soon as text is modified (typing, procedural...) 1246 // We do not hide the span controllers, since they can be added when a new text is 1247 // inserted into the text view (voice IME). 1248 hideCursorControllers(); 1249 // Reset drag accelerator. 1250 if (mSelectionModifierCursorController != null) { 1251 mSelectionModifierCursorController.resetTouchOffsets(); 1252 } 1253 stopTextActionMode(); 1254 } 1255 1256 private int getLastTapPosition() { 1257 // No need to create the controller at that point, no last tap position saved 1258 if (mSelectionModifierCursorController != null) { 1259 int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); 1260 if (lastTapPosition >= 0) { 1261 // Safety check, should not be possible. 1262 if (lastTapPosition > mTextView.getText().length()) { 1263 lastTapPosition = mTextView.getText().length(); 1264 } 1265 return lastTapPosition; 1266 } 1267 } 1268 1269 return -1; 1270 } 1271 1272 void onWindowFocusChanged(boolean hasWindowFocus) { 1273 if (hasWindowFocus) { 1274 if (mBlink != null) { 1275 mBlink.uncancel(); 1276 makeBlink(); 1277 } 1278 final InputMethodManager imm = InputMethodManager.peekInstance(); 1279 if (mTextView.hasSelection() && !extractedTextModeWillBeStarted()) { 1280 startSelectionActionMode(); 1281 } 1282 } else { 1283 if (mBlink != null) { 1284 mBlink.cancel(); 1285 } 1286 if (mInputContentType != null) { 1287 mInputContentType.enterDown = false; 1288 } 1289 // Order matters! Must be done before onParentLostFocus to rely on isShowingUp 1290 hideCursorAndSpanControllers(); 1291 stopTextActionModeWithPreservingSelection(); 1292 if (mSuggestionsPopupWindow != null) { 1293 mSuggestionsPopupWindow.onParentLostFocus(); 1294 } 1295 1296 // Don't leave us in the middle of a batch edit. Same as in onFocusChanged 1297 ensureEndedBatchEdit(); 1298 } 1299 } 1300 1301 private void updateTapState(MotionEvent event) { 1302 final int action = event.getActionMasked(); 1303 if (action == MotionEvent.ACTION_DOWN) { 1304 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 1305 // Detect double tap and triple click. 1306 if (((mTapState == TAP_STATE_FIRST_TAP) 1307 || ((mTapState == TAP_STATE_DOUBLE_TAP) && isMouse)) 1308 && (SystemClock.uptimeMillis() - mLastTouchUpTime) <= 1309 ViewConfiguration.getDoubleTapTimeout()) { 1310 if (mTapState == TAP_STATE_FIRST_TAP) { 1311 mTapState = TAP_STATE_DOUBLE_TAP; 1312 } else { 1313 mTapState = TAP_STATE_TRIPLE_CLICK; 1314 } 1315 } else { 1316 mTapState = TAP_STATE_FIRST_TAP; 1317 } 1318 } 1319 if (action == MotionEvent.ACTION_UP) { 1320 mLastTouchUpTime = SystemClock.uptimeMillis(); 1321 } 1322 } 1323 1324 private boolean shouldFilterOutTouchEvent(MotionEvent event) { 1325 if (!event.isFromSource(InputDevice.SOURCE_MOUSE)) { 1326 return false; 1327 } 1328 final boolean primaryButtonStateChanged = 1329 ((mLastButtonState ^ event.getButtonState()) & MotionEvent.BUTTON_PRIMARY) != 0; 1330 final int action = event.getActionMasked(); 1331 if ((action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_UP) 1332 && !primaryButtonStateChanged) { 1333 return true; 1334 } 1335 if (action == MotionEvent.ACTION_MOVE 1336 && !event.isButtonPressed(MotionEvent.BUTTON_PRIMARY)) { 1337 return true; 1338 } 1339 return false; 1340 } 1341 1342 void onTouchEvent(MotionEvent event) { 1343 final boolean filterOutEvent = shouldFilterOutTouchEvent(event); 1344 mLastButtonState = event.getButtonState(); 1345 if (filterOutEvent) { 1346 if (event.getActionMasked() == MotionEvent.ACTION_UP) { 1347 mDiscardNextActionUp = true; 1348 } 1349 return; 1350 } 1351 updateTapState(event); 1352 updateFloatingToolbarVisibility(event); 1353 1354 if (hasSelectionController()) { 1355 getSelectionController().onTouchEvent(event); 1356 } 1357 1358 if (mShowSuggestionRunnable != null) { 1359 mTextView.removeCallbacks(mShowSuggestionRunnable); 1360 mShowSuggestionRunnable = null; 1361 } 1362 1363 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 1364 mLastDownPositionX = event.getX(); 1365 mLastDownPositionY = event.getY(); 1366 1367 // Reset this state; it will be re-set if super.onTouchEvent 1368 // causes focus to move to the view. 1369 mTouchFocusSelected = false; 1370 mIgnoreActionUpEvent = false; 1371 } 1372 } 1373 1374 private void updateFloatingToolbarVisibility(MotionEvent event) { 1375 if (mTextActionMode != null) { 1376 switch (event.getActionMasked()) { 1377 case MotionEvent.ACTION_MOVE: 1378 hideFloatingToolbar(); 1379 break; 1380 case MotionEvent.ACTION_UP: // fall through 1381 case MotionEvent.ACTION_CANCEL: 1382 showFloatingToolbar(); 1383 } 1384 } 1385 } 1386 1387 private void hideFloatingToolbar() { 1388 if (mTextActionMode != null) { 1389 mTextView.removeCallbacks(mShowFloatingToolbar); 1390 mTextActionMode.hide(ActionMode.DEFAULT_HIDE_DURATION); 1391 } 1392 } 1393 1394 private void showFloatingToolbar() { 1395 if (mTextActionMode != null) { 1396 // Delay "show" so it doesn't interfere with click confirmations 1397 // or double-clicks that could "dismiss" the floating toolbar. 1398 int delay = ViewConfiguration.getDoubleTapTimeout(); 1399 mTextView.postDelayed(mShowFloatingToolbar, delay); 1400 } 1401 } 1402 1403 public void beginBatchEdit() { 1404 mInBatchEditControllers = true; 1405 final InputMethodState ims = mInputMethodState; 1406 if (ims != null) { 1407 int nesting = ++ims.mBatchEditNesting; 1408 if (nesting == 1) { 1409 ims.mCursorChanged = false; 1410 ims.mChangedDelta = 0; 1411 if (ims.mContentChanged) { 1412 // We already have a pending change from somewhere else, 1413 // so turn this into a full update. 1414 ims.mChangedStart = 0; 1415 ims.mChangedEnd = mTextView.getText().length(); 1416 } else { 1417 ims.mChangedStart = EXTRACT_UNKNOWN; 1418 ims.mChangedEnd = EXTRACT_UNKNOWN; 1419 ims.mContentChanged = false; 1420 } 1421 mUndoInputFilter.beginBatchEdit(); 1422 mTextView.onBeginBatchEdit(); 1423 } 1424 } 1425 } 1426 1427 public void endBatchEdit() { 1428 mInBatchEditControllers = false; 1429 final InputMethodState ims = mInputMethodState; 1430 if (ims != null) { 1431 int nesting = --ims.mBatchEditNesting; 1432 if (nesting == 0) { 1433 finishBatchEdit(ims); 1434 } 1435 } 1436 } 1437 1438 void ensureEndedBatchEdit() { 1439 final InputMethodState ims = mInputMethodState; 1440 if (ims != null && ims.mBatchEditNesting != 0) { 1441 ims.mBatchEditNesting = 0; 1442 finishBatchEdit(ims); 1443 } 1444 } 1445 1446 void finishBatchEdit(final InputMethodState ims) { 1447 mTextView.onEndBatchEdit(); 1448 mUndoInputFilter.endBatchEdit(); 1449 1450 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1451 mTextView.updateAfterEdit(); 1452 reportExtractedText(); 1453 } else if (ims.mCursorChanged) { 1454 // Cheesy way to get us to report the current cursor location. 1455 mTextView.invalidateCursor(); 1456 } 1457 // sendUpdateSelection knows to avoid sending if the selection did 1458 // not actually change. 1459 sendUpdateSelection(); 1460 } 1461 1462 static final int EXTRACT_NOTHING = -2; 1463 static final int EXTRACT_UNKNOWN = -1; 1464 1465 boolean extractText(ExtractedTextRequest request, ExtractedText outText) { 1466 return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, 1467 EXTRACT_UNKNOWN, outText); 1468 } 1469 1470 private boolean extractTextInternal(@Nullable ExtractedTextRequest request, 1471 int partialStartOffset, int partialEndOffset, int delta, 1472 @Nullable ExtractedText outText) { 1473 if (request == null || outText == null) { 1474 return false; 1475 } 1476 1477 final CharSequence content = mTextView.getText(); 1478 if (content == null) { 1479 return false; 1480 } 1481 1482 if (partialStartOffset != EXTRACT_NOTHING) { 1483 final int N = content.length(); 1484 if (partialStartOffset < 0) { 1485 outText.partialStartOffset = outText.partialEndOffset = -1; 1486 partialStartOffset = 0; 1487 partialEndOffset = N; 1488 } else { 1489 // Now use the delta to determine the actual amount of text 1490 // we need. 1491 partialEndOffset += delta; 1492 // Adjust offsets to ensure we contain full spans. 1493 if (content instanceof Spanned) { 1494 Spanned spanned = (Spanned)content; 1495 Object[] spans = spanned.getSpans(partialStartOffset, 1496 partialEndOffset, ParcelableSpan.class); 1497 int i = spans.length; 1498 while (i > 0) { 1499 i--; 1500 int j = spanned.getSpanStart(spans[i]); 1501 if (j < partialStartOffset) partialStartOffset = j; 1502 j = spanned.getSpanEnd(spans[i]); 1503 if (j > partialEndOffset) partialEndOffset = j; 1504 } 1505 } 1506 outText.partialStartOffset = partialStartOffset; 1507 outText.partialEndOffset = partialEndOffset - delta; 1508 1509 if (partialStartOffset > N) { 1510 partialStartOffset = N; 1511 } else if (partialStartOffset < 0) { 1512 partialStartOffset = 0; 1513 } 1514 if (partialEndOffset > N) { 1515 partialEndOffset = N; 1516 } else if (partialEndOffset < 0) { 1517 partialEndOffset = 0; 1518 } 1519 } 1520 if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) { 1521 outText.text = content.subSequence(partialStartOffset, 1522 partialEndOffset); 1523 } else { 1524 outText.text = TextUtils.substring(content, partialStartOffset, 1525 partialEndOffset); 1526 } 1527 } else { 1528 outText.partialStartOffset = 0; 1529 outText.partialEndOffset = 0; 1530 outText.text = ""; 1531 } 1532 outText.flags = 0; 1533 if (MetaKeyKeyListener.getMetaState(content, MetaKeyKeyListener.META_SELECTING) != 0) { 1534 outText.flags |= ExtractedText.FLAG_SELECTING; 1535 } 1536 if (mTextView.isSingleLine()) { 1537 outText.flags |= ExtractedText.FLAG_SINGLE_LINE; 1538 } 1539 outText.startOffset = 0; 1540 outText.selectionStart = mTextView.getSelectionStart(); 1541 outText.selectionEnd = mTextView.getSelectionEnd(); 1542 return true; 1543 } 1544 1545 boolean reportExtractedText() { 1546 final Editor.InputMethodState ims = mInputMethodState; 1547 if (ims != null) { 1548 final boolean contentChanged = ims.mContentChanged; 1549 if (contentChanged || ims.mSelectionModeChanged) { 1550 ims.mContentChanged = false; 1551 ims.mSelectionModeChanged = false; 1552 final ExtractedTextRequest req = ims.mExtractedTextRequest; 1553 if (req != null) { 1554 InputMethodManager imm = InputMethodManager.peekInstance(); 1555 if (imm != null) { 1556 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1557 "Retrieving extracted start=" + ims.mChangedStart + 1558 " end=" + ims.mChangedEnd + 1559 " delta=" + ims.mChangedDelta); 1560 if (ims.mChangedStart < 0 && !contentChanged) { 1561 ims.mChangedStart = EXTRACT_NOTHING; 1562 } 1563 if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, 1564 ims.mChangedDelta, ims.mExtractedText)) { 1565 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1566 "Reporting extracted start=" + 1567 ims.mExtractedText.partialStartOffset + 1568 " end=" + ims.mExtractedText.partialEndOffset + 1569 ": " + ims.mExtractedText.text); 1570 1571 imm.updateExtractedText(mTextView, req.token, ims.mExtractedText); 1572 ims.mChangedStart = EXTRACT_UNKNOWN; 1573 ims.mChangedEnd = EXTRACT_UNKNOWN; 1574 ims.mChangedDelta = 0; 1575 ims.mContentChanged = false; 1576 return true; 1577 } 1578 } 1579 } 1580 } 1581 } 1582 return false; 1583 } 1584 1585 private void sendUpdateSelection() { 1586 if (null != mInputMethodState && mInputMethodState.mBatchEditNesting <= 0) { 1587 final InputMethodManager imm = InputMethodManager.peekInstance(); 1588 if (null != imm) { 1589 final int selectionStart = mTextView.getSelectionStart(); 1590 final int selectionEnd = mTextView.getSelectionEnd(); 1591 int candStart = -1; 1592 int candEnd = -1; 1593 if (mTextView.getText() instanceof Spannable) { 1594 final Spannable sp = (Spannable) mTextView.getText(); 1595 candStart = EditableInputConnection.getComposingSpanStart(sp); 1596 candEnd = EditableInputConnection.getComposingSpanEnd(sp); 1597 } 1598 // InputMethodManager#updateSelection skips sending the message if 1599 // none of the parameters have changed since the last time we called it. 1600 imm.updateSelection(mTextView, 1601 selectionStart, selectionEnd, candStart, candEnd); 1602 } 1603 } 1604 } 1605 1606 void onDraw(Canvas canvas, Layout layout, Path highlight, Paint highlightPaint, 1607 int cursorOffsetVertical) { 1608 final int selectionStart = mTextView.getSelectionStart(); 1609 final int selectionEnd = mTextView.getSelectionEnd(); 1610 1611 final InputMethodState ims = mInputMethodState; 1612 if (ims != null && ims.mBatchEditNesting == 0) { 1613 InputMethodManager imm = InputMethodManager.peekInstance(); 1614 if (imm != null) { 1615 if (imm.isActive(mTextView)) { 1616 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1617 // We are in extract mode and the content has changed 1618 // in some way... just report complete new text to the 1619 // input method. 1620 reportExtractedText(); 1621 } 1622 } 1623 } 1624 } 1625 1626 if (mCorrectionHighlighter != null) { 1627 mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); 1628 } 1629 1630 if (highlight != null && selectionStart == selectionEnd && mCursorCount > 0) { 1631 drawCursor(canvas, cursorOffsetVertical); 1632 // Rely on the drawable entirely, do not draw the cursor line. 1633 // Has to be done after the IMM related code above which relies on the highlight. 1634 highlight = null; 1635 } 1636 1637 if (mTextView.canHaveDisplayList() && canvas.isHardwareAccelerated()) { 1638 drawHardwareAccelerated(canvas, layout, highlight, highlightPaint, 1639 cursorOffsetVertical); 1640 } else { 1641 layout.draw(canvas, highlight, highlightPaint, cursorOffsetVertical); 1642 } 1643 } 1644 1645 private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight, 1646 Paint highlightPaint, int cursorOffsetVertical) { 1647 final long lineRange = layout.getLineRangeForDraw(canvas); 1648 int firstLine = TextUtils.unpackRangeStartFromLong(lineRange); 1649 int lastLine = TextUtils.unpackRangeEndFromLong(lineRange); 1650 if (lastLine < 0) return; 1651 1652 layout.drawBackground(canvas, highlight, highlightPaint, cursorOffsetVertical, 1653 firstLine, lastLine); 1654 1655 if (layout instanceof DynamicLayout) { 1656 if (mTextRenderNodes == null) { 1657 mTextRenderNodes = ArrayUtils.emptyArray(TextRenderNode.class); 1658 } 1659 1660 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1661 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1662 int[] blockIndices = dynamicLayout.getBlockIndices(); 1663 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1664 final int indexFirstChangedBlock = dynamicLayout.getIndexFirstChangedBlock(); 1665 1666 int endOfPreviousBlock = -1; 1667 int searchStartIndex = 0; 1668 for (int i = 0; i < numberOfBlocks; i++) { 1669 int blockEndLine = blockEndLines[i]; 1670 int blockIndex = blockIndices[i]; 1671 1672 final boolean blockIsInvalid = blockIndex == DynamicLayout.INVALID_BLOCK_INDEX; 1673 if (blockIsInvalid) { 1674 blockIndex = getAvailableDisplayListIndex(blockIndices, numberOfBlocks, 1675 searchStartIndex); 1676 // Note how dynamic layout's internal block indices get updated from Editor 1677 blockIndices[i] = blockIndex; 1678 if (mTextRenderNodes[blockIndex] != null) { 1679 mTextRenderNodes[blockIndex].isDirty = true; 1680 } 1681 searchStartIndex = blockIndex + 1; 1682 } 1683 1684 if (mTextRenderNodes[blockIndex] == null) { 1685 mTextRenderNodes[blockIndex] = 1686 new TextRenderNode("Text " + blockIndex); 1687 } 1688 1689 final boolean blockDisplayListIsInvalid = mTextRenderNodes[blockIndex].needsRecord(); 1690 RenderNode blockDisplayList = mTextRenderNodes[blockIndex].renderNode; 1691 if (i >= indexFirstChangedBlock || blockDisplayListIsInvalid) { 1692 final int blockBeginLine = endOfPreviousBlock + 1; 1693 final int top = layout.getLineTop(blockBeginLine); 1694 final int bottom = layout.getLineBottom(blockEndLine); 1695 int left = 0; 1696 int right = mTextView.getWidth(); 1697 if (mTextView.getHorizontallyScrolling()) { 1698 float min = Float.MAX_VALUE; 1699 float max = Float.MIN_VALUE; 1700 for (int line = blockBeginLine; line <= blockEndLine; line++) { 1701 min = Math.min(min, layout.getLineLeft(line)); 1702 max = Math.max(max, layout.getLineRight(line)); 1703 } 1704 left = (int) min; 1705 right = (int) (max + 0.5f); 1706 } 1707 1708 // Rebuild display list if it is invalid 1709 if (blockDisplayListIsInvalid) { 1710 final DisplayListCanvas displayListCanvas = blockDisplayList.start( 1711 right - left, bottom - top); 1712 try { 1713 // drawText is always relative to TextView's origin, this translation 1714 // brings this range of text back to the top left corner of the viewport 1715 displayListCanvas.translate(-left, -top); 1716 layout.drawText(displayListCanvas, blockBeginLine, blockEndLine); 1717 mTextRenderNodes[blockIndex].isDirty = false; 1718 // No need to untranslate, previous context is popped after 1719 // drawDisplayList 1720 } finally { 1721 blockDisplayList.end(displayListCanvas); 1722 // Same as drawDisplayList below, handled by our TextView's parent 1723 blockDisplayList.setClipToBounds(false); 1724 } 1725 } 1726 1727 // Valid disply list whose index is >= indexFirstChangedBlock 1728 // only needs to update its drawing location. 1729 blockDisplayList.setLeftTopRightBottom(left, top, right, bottom); 1730 } 1731 1732 ((DisplayListCanvas) canvas).drawRenderNode(blockDisplayList); 1733 1734 endOfPreviousBlock = blockEndLine; 1735 } 1736 1737 dynamicLayout.setIndexFirstChangedBlock(numberOfBlocks); 1738 } else { 1739 // Boring layout is used for empty and hint text 1740 layout.drawText(canvas, firstLine, lastLine); 1741 } 1742 } 1743 1744 private int getAvailableDisplayListIndex(int[] blockIndices, int numberOfBlocks, 1745 int searchStartIndex) { 1746 int length = mTextRenderNodes.length; 1747 for (int i = searchStartIndex; i < length; i++) { 1748 boolean blockIndexFound = false; 1749 for (int j = 0; j < numberOfBlocks; j++) { 1750 if (blockIndices[j] == i) { 1751 blockIndexFound = true; 1752 break; 1753 } 1754 } 1755 if (blockIndexFound) continue; 1756 return i; 1757 } 1758 1759 // No available index found, the pool has to grow 1760 mTextRenderNodes = GrowingArrayUtils.append(mTextRenderNodes, length, null); 1761 return length; 1762 } 1763 1764 private void drawCursor(Canvas canvas, int cursorOffsetVertical) { 1765 final boolean translate = cursorOffsetVertical != 0; 1766 if (translate) canvas.translate(0, cursorOffsetVertical); 1767 for (int i = 0; i < mCursorCount; i++) { 1768 mCursorDrawable[i].draw(canvas); 1769 } 1770 if (translate) canvas.translate(0, -cursorOffsetVertical); 1771 } 1772 1773 /** 1774 * Invalidates all the sub-display lists that overlap the specified character range 1775 */ 1776 void invalidateTextDisplayList(Layout layout, int start, int end) { 1777 if (mTextRenderNodes != null && layout instanceof DynamicLayout) { 1778 final int firstLine = layout.getLineForOffset(start); 1779 final int lastLine = layout.getLineForOffset(end); 1780 1781 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1782 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1783 int[] blockIndices = dynamicLayout.getBlockIndices(); 1784 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1785 1786 int i = 0; 1787 // Skip the blocks before firstLine 1788 while (i < numberOfBlocks) { 1789 if (blockEndLines[i] >= firstLine) break; 1790 i++; 1791 } 1792 1793 // Invalidate all subsequent blocks until lastLine is passed 1794 while (i < numberOfBlocks) { 1795 final int blockIndex = blockIndices[i]; 1796 if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX) { 1797 mTextRenderNodes[blockIndex].isDirty = true; 1798 } 1799 if (blockEndLines[i] >= lastLine) break; 1800 i++; 1801 } 1802 } 1803 } 1804 1805 void invalidateTextDisplayList() { 1806 if (mTextRenderNodes != null) { 1807 for (int i = 0; i < mTextRenderNodes.length; i++) { 1808 if (mTextRenderNodes[i] != null) mTextRenderNodes[i].isDirty = true; 1809 } 1810 } 1811 } 1812 1813 void updateCursorsPositions() { 1814 if (mTextView.mCursorDrawableRes == 0) { 1815 mCursorCount = 0; 1816 return; 1817 } 1818 1819 Layout layout = getActiveLayout(); 1820 final int offset = mTextView.getSelectionStart(); 1821 final int line = layout.getLineForOffset(offset); 1822 final int top = layout.getLineTop(line); 1823 final int bottom = layout.getLineTop(line + 1); 1824 1825 mCursorCount = layout.isLevelBoundary(offset) ? 2 : 1; 1826 1827 int middle = bottom; 1828 if (mCursorCount == 2) { 1829 // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)} 1830 middle = (top + bottom) >> 1; 1831 } 1832 1833 boolean clamped = layout.shouldClampCursor(line); 1834 updateCursorPosition(0, top, middle, layout.getPrimaryHorizontal(offset, clamped)); 1835 1836 if (mCursorCount == 2) { 1837 updateCursorPosition(1, middle, bottom, layout.getSecondaryHorizontal(offset, clamped)); 1838 } 1839 } 1840 1841 void refreshTextActionMode() { 1842 if (extractedTextModeWillBeStarted()) { 1843 return; 1844 } 1845 final boolean hasSelection = mTextView.hasSelection(); 1846 final SelectionModifierCursorController selectionController = getSelectionController(); 1847 final InsertionPointCursorController insertionController = getInsertionController(); 1848 if ((selectionController != null && selectionController.isCursorBeingModified()) 1849 || (insertionController != null && insertionController.isCursorBeingModified())) { 1850 // ActionMode should be managed by the currently active cursor controller. 1851 return; 1852 } 1853 if (hasSelection) { 1854 if (mTextActionMode == null || selectionController == null 1855 || !selectionController.isActive()) { 1856 // Avoid dismissing the selection if it exists. 1857 stopTextActionModeWithPreservingSelection(); 1858 startSelectionActionMode(); 1859 } else { 1860 mTextActionMode.invalidateContentRect(); 1861 } 1862 } else { 1863 // Insertion action mode is started only when insertion controller is explicitly 1864 // activated. 1865 if (insertionController == null || !insertionController.isActive()) { 1866 stopTextActionMode(); 1867 } else if (mTextActionMode != null) { 1868 mTextActionMode.invalidateContentRect(); 1869 } 1870 } 1871 } 1872 1873 /** 1874 * Start an Insertion action mode. 1875 */ 1876 void startInsertionActionMode() { 1877 if (mInsertionActionModeRunnable != null) { 1878 mTextView.removeCallbacks(mInsertionActionModeRunnable); 1879 } 1880 if (extractedTextModeWillBeStarted()) { 1881 return; 1882 } 1883 stopTextActionMode(); 1884 1885 ActionMode.Callback actionModeCallback = 1886 new TextActionModeCallback(false /* hasSelection */); 1887 mTextActionMode = mTextView.startActionMode( 1888 actionModeCallback, ActionMode.TYPE_FLOATING); 1889 if (mTextActionMode != null && getInsertionController() != null) { 1890 getInsertionController().show(); 1891 } 1892 } 1893 1894 /** 1895 * Starts a Selection Action Mode with the current selection and ensures the selection handles 1896 * are shown if there is a selection. This should be used when the mode is started from a 1897 * non-touch event. 1898 * 1899 * @return true if the selection mode was actually started. 1900 */ 1901 private boolean startSelectionActionMode() { 1902 boolean selectionStarted = startSelectionActionModeInternal(); 1903 if (selectionStarted) { 1904 getSelectionController().show(); 1905 } 1906 return selectionStarted; 1907 } 1908 1909 /** 1910 * If the TextView allows text selection, selects the current word when no existing selection 1911 * was available and starts a drag. 1912 * 1913 * @return true if the drag was started. 1914 */ 1915 private boolean selectCurrentWordAndStartDrag() { 1916 if (mInsertionActionModeRunnable != null) { 1917 mTextView.removeCallbacks(mInsertionActionModeRunnable); 1918 } 1919 if (extractedTextModeWillBeStarted()) { 1920 return false; 1921 } 1922 if (!checkField()) { 1923 return false; 1924 } 1925 if (!mTextView.hasSelection() && !selectCurrentWord()) { 1926 // No selection and cannot select a word. 1927 return false; 1928 } 1929 stopTextActionModeWithPreservingSelection(); 1930 getSelectionController().enterDrag( 1931 SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_WORD); 1932 return true; 1933 } 1934 1935 /** 1936 * Checks whether a selection can be performed on the current TextView. 1937 * 1938 * @return true if a selection can be performed 1939 */ 1940 boolean checkField() { 1941 if (!mTextView.canSelectText() || !mTextView.requestFocus()) { 1942 Log.w(TextView.LOG_TAG, 1943 "TextView does not support text selection. Selection cancelled."); 1944 return false; 1945 } 1946 return true; 1947 } 1948 1949 private boolean startSelectionActionModeInternal() { 1950 if (extractedTextModeWillBeStarted()) { 1951 return false; 1952 } 1953 if (mTextActionMode != null) { 1954 // Text action mode is already started 1955 mTextActionMode.invalidate(); 1956 return false; 1957 } 1958 1959 if (!checkField() || !mTextView.hasSelection()) { 1960 return false; 1961 } 1962 1963 ActionMode.Callback actionModeCallback = 1964 new TextActionModeCallback(true /* hasSelection */); 1965 mTextActionMode = mTextView.startActionMode(actionModeCallback, ActionMode.TYPE_FLOATING); 1966 1967 final boolean selectionStarted = mTextActionMode != null; 1968 if (selectionStarted && !mTextView.isTextSelectable() && mShowSoftInputOnFocus) { 1969 // Show the IME to be able to replace text, except when selecting non editable text. 1970 final InputMethodManager imm = InputMethodManager.peekInstance(); 1971 if (imm != null) { 1972 imm.showSoftInput(mTextView, 0, null); 1973 } 1974 } 1975 return selectionStarted; 1976 } 1977 1978 boolean extractedTextModeWillBeStarted() { 1979 if (!(mTextView.isInExtractedMode())) { 1980 final InputMethodManager imm = InputMethodManager.peekInstance(); 1981 return imm != null && imm.isFullscreenMode(); 1982 } 1983 return false; 1984 } 1985 1986 /** 1987 * @return <code>true</code> if it's reasonable to offer to show suggestions depending on 1988 * the current cursor position or selection range. This method is consistent with the 1989 * method to show suggestions {@link SuggestionsPopupWindow#updateSuggestions}. 1990 */ 1991 private boolean shouldOfferToShowSuggestions() { 1992 CharSequence text = mTextView.getText(); 1993 if (!(text instanceof Spannable)) return false; 1994 1995 final Spannable spannable = (Spannable) text; 1996 final int selectionStart = mTextView.getSelectionStart(); 1997 final int selectionEnd = mTextView.getSelectionEnd(); 1998 final SuggestionSpan[] suggestionSpans = spannable.getSpans(selectionStart, selectionEnd, 1999 SuggestionSpan.class); 2000 if (suggestionSpans.length == 0) { 2001 return false; 2002 } 2003 if (selectionStart == selectionEnd) { 2004 // Spans overlap the cursor. 2005 for (int i = 0; i < suggestionSpans.length; i++) { 2006 if (suggestionSpans[i].getSuggestions().length > 0) { 2007 return true; 2008 } 2009 } 2010 return false; 2011 } 2012 int minSpanStart = mTextView.getText().length(); 2013 int maxSpanEnd = 0; 2014 int unionOfSpansCoveringSelectionStartStart = mTextView.getText().length(); 2015 int unionOfSpansCoveringSelectionStartEnd = 0; 2016 boolean hasValidSuggestions = false; 2017 for (int i = 0; i < suggestionSpans.length; i++) { 2018 final int spanStart = spannable.getSpanStart(suggestionSpans[i]); 2019 final int spanEnd = spannable.getSpanEnd(suggestionSpans[i]); 2020 minSpanStart = Math.min(minSpanStart, spanStart); 2021 maxSpanEnd = Math.max(maxSpanEnd, spanEnd); 2022 if (selectionStart < spanStart || selectionStart > spanEnd) { 2023 // The span doesn't cover the current selection start point. 2024 continue; 2025 } 2026 hasValidSuggestions = 2027 hasValidSuggestions || suggestionSpans[i].getSuggestions().length > 0; 2028 unionOfSpansCoveringSelectionStartStart = 2029 Math.min(unionOfSpansCoveringSelectionStartStart, spanStart); 2030 unionOfSpansCoveringSelectionStartEnd = 2031 Math.max(unionOfSpansCoveringSelectionStartEnd, spanEnd); 2032 } 2033 if (!hasValidSuggestions) { 2034 return false; 2035 } 2036 if (unionOfSpansCoveringSelectionStartStart >= unionOfSpansCoveringSelectionStartEnd) { 2037 // No spans cover the selection start point. 2038 return false; 2039 } 2040 if (minSpanStart < unionOfSpansCoveringSelectionStartStart 2041 || maxSpanEnd > unionOfSpansCoveringSelectionStartEnd) { 2042 // There is a span that is not covered by the union. In this case, we soouldn't offer 2043 // to show suggestions as it's confusing. 2044 return false; 2045 } 2046 return true; 2047 } 2048 2049 /** 2050 * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with 2051 * {@link SuggestionSpan#FLAG_EASY_CORRECT} set. 2052 */ 2053 private boolean isCursorInsideEasyCorrectionSpan() { 2054 Spannable spannable = (Spannable) mTextView.getText(); 2055 SuggestionSpan[] suggestionSpans = spannable.getSpans(mTextView.getSelectionStart(), 2056 mTextView.getSelectionEnd(), SuggestionSpan.class); 2057 for (int i = 0; i < suggestionSpans.length; i++) { 2058 if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) { 2059 return true; 2060 } 2061 } 2062 return false; 2063 } 2064 2065 void onTouchUpEvent(MotionEvent event) { 2066 boolean selectAllGotFocus = mSelectAllOnFocus && mTextView.didTouchFocusSelect(); 2067 hideCursorAndSpanControllers(); 2068 stopTextActionMode(); 2069 CharSequence text = mTextView.getText(); 2070 if (!selectAllGotFocus && text.length() > 0) { 2071 // Move cursor 2072 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 2073 Selection.setSelection((Spannable) text, offset); 2074 if (mSpellChecker != null) { 2075 // When the cursor moves, the word that was typed may need spell check 2076 mSpellChecker.onSelectionChanged(); 2077 } 2078 2079 if (!extractedTextModeWillBeStarted()) { 2080 if (isCursorInsideEasyCorrectionSpan()) { 2081 // Cancel the single tap delayed runnable. 2082 if (mInsertionActionModeRunnable != null) { 2083 mTextView.removeCallbacks(mInsertionActionModeRunnable); 2084 } 2085 2086 mShowSuggestionRunnable = new Runnable() { 2087 public void run() { 2088 showSuggestions(); 2089 } 2090 }; 2091 // removeCallbacks is performed on every touch 2092 mTextView.postDelayed(mShowSuggestionRunnable, 2093 ViewConfiguration.getDoubleTapTimeout()); 2094 } else if (hasInsertionController()) { 2095 getInsertionController().show(); 2096 } 2097 } 2098 } 2099 } 2100 2101 protected void stopTextActionMode() { 2102 if (mTextActionMode != null) { 2103 // This will hide the mSelectionModifierCursorController 2104 mTextActionMode.finish(); 2105 } 2106 } 2107 2108 private void stopTextActionModeWithPreservingSelection() { 2109 mPreserveSelection = true; 2110 stopTextActionMode(); 2111 mPreserveSelection = false; 2112 } 2113 2114 /** 2115 * @return True if this view supports insertion handles. 2116 */ 2117 boolean hasInsertionController() { 2118 return mInsertionControllerEnabled; 2119 } 2120 2121 /** 2122 * @return True if this view supports selection handles. 2123 */ 2124 boolean hasSelectionController() { 2125 return mSelectionControllerEnabled; 2126 } 2127 2128 InsertionPointCursorController getInsertionController() { 2129 if (!mInsertionControllerEnabled) { 2130 return null; 2131 } 2132 2133 if (mInsertionPointCursorController == null) { 2134 mInsertionPointCursorController = new InsertionPointCursorController(); 2135 2136 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 2137 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 2138 } 2139 2140 return mInsertionPointCursorController; 2141 } 2142 2143 SelectionModifierCursorController getSelectionController() { 2144 if (!mSelectionControllerEnabled) { 2145 return null; 2146 } 2147 2148 if (mSelectionModifierCursorController == null) { 2149 mSelectionModifierCursorController = new SelectionModifierCursorController(); 2150 2151 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 2152 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 2153 } 2154 2155 return mSelectionModifierCursorController; 2156 } 2157 2158 /** 2159 * @hide 2160 */ 2161 @VisibleForTesting 2162 public Drawable[] getCursorDrawable() { 2163 return mCursorDrawable; 2164 } 2165 2166 private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) { 2167 if (mCursorDrawable[cursorIndex] == null) 2168 mCursorDrawable[cursorIndex] = mTextView.getContext().getDrawable( 2169 mTextView.mCursorDrawableRes); 2170 final Drawable drawable = mCursorDrawable[cursorIndex]; 2171 final int left = clampCursorHorizontalPosition(drawable, horizontal); 2172 final int width = drawable.getIntrinsicWidth(); 2173 drawable.setBounds(left, top - mTempRect.top, left + width, 2174 bottom + mTempRect.bottom); 2175 } 2176 2177 /** 2178 * Return clamped position for the cursor. If the cursor is within the boundaries of the view, 2179 * then it is offset with the left padding of the cursor drawable. If the cursor is at 2180 * the beginning or the end of the text then its drawable edge is aligned with left or right of 2181 * the view boundary. 2182 * 2183 * @param drawable Cursor drawable. 2184 * @param horizontal Horizontal position for the cursor. 2185 * @return The clamped horizontal position for the cursor. 2186 */ 2187 private final int clampCursorHorizontalPosition(final Drawable drawable, float 2188 horizontal) { 2189 horizontal = Math.max(0.5f, horizontal - 0.5f); 2190 if (mTempRect == null) mTempRect = new Rect(); 2191 drawable.getPadding(mTempRect); 2192 int scrollX = mTextView.getScrollX(); 2193 float horizontalDiff = horizontal - scrollX; 2194 int viewClippedWidth = mTextView.getWidth() - mTextView.getCompoundPaddingLeft() 2195 - mTextView.getCompoundPaddingRight(); 2196 2197 final int left; 2198 if (horizontalDiff >= (viewClippedWidth - 1f)) { 2199 // at the rightmost position 2200 final int cursorWidth = drawable.getIntrinsicWidth(); 2201 left = viewClippedWidth + scrollX - (cursorWidth - mTempRect.right); 2202 } else if (Math.abs(horizontalDiff) <= 1f) { 2203 // at the leftmost position 2204 left = scrollX - mTempRect.left; 2205 } else { 2206 left = (int) horizontal - mTempRect.left; 2207 } 2208 return left; 2209 } 2210 2211 /** 2212 * Called by the framework in response to a text auto-correction (such as fixing a typo using a 2213 * a dictionary) from the current input method, provided by it calling 2214 * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default 2215 * implementation flashes the background of the corrected word to provide feedback to the user. 2216 * 2217 * @param info The auto correct info about the text that was corrected. 2218 */ 2219 public void onCommitCorrection(CorrectionInfo info) { 2220 if (mCorrectionHighlighter == null) { 2221 mCorrectionHighlighter = new CorrectionHighlighter(); 2222 } else { 2223 mCorrectionHighlighter.invalidate(false); 2224 } 2225 2226 mCorrectionHighlighter.highlight(info); 2227 } 2228 2229 void showSuggestions() { 2230 if (mSuggestionsPopupWindow == null) { 2231 mSuggestionsPopupWindow = new SuggestionsPopupWindow(); 2232 } 2233 hideCursorAndSpanControllers(); 2234 stopTextActionMode(); 2235 mSuggestionsPopupWindow.show(); 2236 } 2237 2238 void onScrollChanged() { 2239 if (mPositionListener != null) { 2240 mPositionListener.onScrollChanged(); 2241 } 2242 if (mTextActionMode != null) { 2243 mTextActionMode.invalidateContentRect(); 2244 } 2245 } 2246 2247 /** 2248 * @return True when the TextView isFocused and has a valid zero-length selection (cursor). 2249 */ 2250 private boolean shouldBlink() { 2251 if (!isCursorVisible() || !mTextView.isFocused()) return false; 2252 2253 final int start = mTextView.getSelectionStart(); 2254 if (start < 0) return false; 2255 2256 final int end = mTextView.getSelectionEnd(); 2257 if (end < 0) return false; 2258 2259 return start == end; 2260 } 2261 2262 void makeBlink() { 2263 if (shouldBlink()) { 2264 mShowCursor = SystemClock.uptimeMillis(); 2265 if (mBlink == null) mBlink = new Blink(); 2266 mTextView.removeCallbacks(mBlink); 2267 mTextView.postDelayed(mBlink, BLINK); 2268 } else { 2269 if (mBlink != null) mTextView.removeCallbacks(mBlink); 2270 } 2271 } 2272 2273 private class Blink implements Runnable { 2274 private boolean mCancelled; 2275 2276 public void run() { 2277 if (mCancelled) { 2278 return; 2279 } 2280 2281 mTextView.removeCallbacks(this); 2282 2283 if (shouldBlink()) { 2284 if (mTextView.getLayout() != null) { 2285 mTextView.invalidateCursorPath(); 2286 } 2287 2288 mTextView.postDelayed(this, BLINK); 2289 } 2290 } 2291 2292 void cancel() { 2293 if (!mCancelled) { 2294 mTextView.removeCallbacks(this); 2295 mCancelled = true; 2296 } 2297 } 2298 2299 void uncancel() { 2300 mCancelled = false; 2301 } 2302 } 2303 2304 private DragShadowBuilder getTextThumbnailBuilder(CharSequence text) { 2305 TextView shadowView = (TextView) View.inflate(mTextView.getContext(), 2306 com.android.internal.R.layout.text_drag_thumbnail, null); 2307 2308 if (shadowView == null) { 2309 throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); 2310 } 2311 2312 if (text.length() > DRAG_SHADOW_MAX_TEXT_LENGTH) { 2313 text = text.subSequence(0, DRAG_SHADOW_MAX_TEXT_LENGTH); 2314 } 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 // Delete original selection 2400 mTextView.deleteText_internal(dragSourceStart, dragSourceEnd); 2401 2402 // Make sure we do not leave two adjacent spaces. 2403 final int prevCharIdx = Math.max(0, dragSourceStart - 1); 2404 final int nextCharIdx = Math.min(mTextView.getText().length(), dragSourceStart + 1); 2405 if (nextCharIdx > prevCharIdx + 1) { 2406 CharSequence t = mTextView.getTransformedText(prevCharIdx, nextCharIdx); 2407 if (Character.isSpaceChar(t.charAt(0)) && Character.isSpaceChar(t.charAt(1))) { 2408 mTextView.deleteText_internal(prevCharIdx, prevCharIdx + 1); 2409 } 2410 } 2411 } 2412 } 2413 2414 public void addSpanWatchers(Spannable text) { 2415 final int textLength = text.length(); 2416 2417 if (mKeyListener != null) { 2418 text.setSpan(mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2419 } 2420 2421 if (mSpanController == null) { 2422 mSpanController = new SpanController(); 2423 } 2424 text.setSpan(mSpanController, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2425 } 2426 2427 void setContextMenuAnchor(float x, float y) { 2428 mContextMenuAnchorX = x; 2429 mContextMenuAnchorY = y; 2430 } 2431 2432 void onCreateContextMenu(ContextMenu menu) { 2433 if (mIsBeingLongClicked || Float.isNaN(mContextMenuAnchorX) 2434 || Float.isNaN(mContextMenuAnchorY)) { 2435 return; 2436 } 2437 final int offset = mTextView.getOffsetForPosition(mContextMenuAnchorX, mContextMenuAnchorY); 2438 if (offset == -1) { 2439 return; 2440 } 2441 stopTextActionModeWithPreservingSelection(); 2442 final boolean isOnSelection = mTextView.hasSelection() 2443 && offset >= mTextView.getSelectionStart() && offset <= mTextView.getSelectionEnd(); 2444 if (!isOnSelection) { 2445 // Right clicked position is not on the selection. Remove the selection and move the 2446 // cursor to the right clicked position. 2447 Selection.setSelection((Spannable) mTextView.getText(), offset); 2448 stopTextActionMode(); 2449 } 2450 2451 if (shouldOfferToShowSuggestions()) { 2452 if (mSuggestionInfosInContextMenu == null) { 2453 mSuggestionInfosInContextMenu = 2454 new SuggestionInfo[SuggestionSpan.SUGGESTIONS_MAX_SIZE]; 2455 for (int i = 0; i < mSuggestionInfosInContextMenu.length; i++) { 2456 mSuggestionInfosInContextMenu[i] = new SuggestionInfo(); 2457 } 2458 } 2459 final SubMenu subMenu = menu.addSubMenu(Menu.NONE, Menu.NONE, MENU_ITEM_ORDER_REPLACE, 2460 com.android.internal.R.string.replace); 2461 mSuggestionHelper.getSuggestionInfo(mSuggestionInfosInContextMenu); 2462 int i = 0; 2463 for (final SuggestionInfo info : mSuggestionInfosInContextMenu) { 2464 info.mSuggestionEnd = info.mText.length(); 2465 subMenu.add(Menu.NONE, Menu.NONE, i++, info.mText) 2466 .setOnMenuItemClickListener(mOnContextMenuReplaceItemClickListener); 2467 } 2468 } 2469 2470 menu.add(Menu.NONE, TextView.ID_UNDO, MENU_ITEM_ORDER_UNDO, 2471 com.android.internal.R.string.undo) 2472 .setAlphabeticShortcut('z') 2473 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2474 .setEnabled(mTextView.canUndo()); 2475 menu.add(Menu.NONE, TextView.ID_REDO, MENU_ITEM_ORDER_REDO, 2476 com.android.internal.R.string.redo) 2477 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2478 .setEnabled(mTextView.canRedo()); 2479 2480 menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, 2481 com.android.internal.R.string.cut) 2482 .setAlphabeticShortcut('x') 2483 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2484 .setEnabled(mTextView.canCut()); 2485 menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, 2486 com.android.internal.R.string.copy) 2487 .setAlphabeticShortcut('c') 2488 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2489 .setEnabled(mTextView.canCopy()); 2490 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, 2491 com.android.internal.R.string.paste) 2492 .setAlphabeticShortcut('v') 2493 .setEnabled(mTextView.canPaste()) 2494 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2495 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE_AS_PLAIN_TEXT, 2496 com.android.internal.R.string.paste_as_plain_text) 2497 .setEnabled(mTextView.canPaste()) 2498 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2499 menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, 2500 com.android.internal.R.string.share) 2501 .setEnabled(mTextView.canShare()) 2502 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2503 menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, 2504 com.android.internal.R.string.selectAll) 2505 .setAlphabeticShortcut('a') 2506 .setEnabled(mTextView.canSelectAllText()) 2507 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2508 2509 mPreserveSelection = true; 2510 } 2511 2512 private void replaceWithSuggestion(final SuggestionInfo suggestionInfo) { 2513 final Editable editable = (Editable) mTextView.getText(); 2514 if (editable.getSpanStart(suggestionInfo.mSuggestionSpan) < 0) { 2515 // Suggestion span coundn't be found. Try to find a suggestion span that has the same 2516 // contents. 2517 final SuggestionSpan[] suggestionSpans = editable.getSpans( 2518 suggestionInfo.mSuggestionSpanStart, suggestionInfo.mSuggestionSpanEnd, 2519 SuggestionSpan.class); 2520 for (final SuggestionSpan suggestionSpan : suggestionSpans) { 2521 final int spanStart = editable.getSpanStart(suggestionSpan); 2522 if (spanStart != suggestionInfo.mSuggestionSpanStart) { 2523 continue; 2524 } 2525 int spanEnd = editable.getSpanEnd(suggestionSpan); 2526 if (spanEnd != suggestionInfo.mSuggestionSpanEnd) { 2527 continue; 2528 } 2529 if (suggestionSpan.equals(suggestionInfo.mSuggestionSpan)) { 2530 // Found. 2531 suggestionInfo.mSuggestionSpan = suggestionSpan; 2532 break; 2533 } 2534 } 2535 } 2536 final int spanStart = editable.getSpanStart(suggestionInfo.mSuggestionSpan); 2537 final int spanEnd = editable.getSpanEnd(suggestionInfo.mSuggestionSpan); 2538 if (spanStart < 0 || spanEnd <= spanStart) { 2539 // Span has been removed 2540 return; 2541 } 2542 2543 final String originalText = TextUtils.substring(editable, spanStart, spanEnd); 2544 // SuggestionSpans are removed by replace: save them before 2545 SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd, 2546 SuggestionSpan.class); 2547 final int length = suggestionSpans.length; 2548 int[] suggestionSpansStarts = new int[length]; 2549 int[] suggestionSpansEnds = new int[length]; 2550 int[] suggestionSpansFlags = new int[length]; 2551 for (int i = 0; i < length; i++) { 2552 final SuggestionSpan suggestionSpan = suggestionSpans[i]; 2553 suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan); 2554 suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan); 2555 suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan); 2556 2557 // Remove potential misspelled flags 2558 int suggestionSpanFlags = suggestionSpan.getFlags(); 2559 if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) != 0) { 2560 suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED; 2561 suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 2562 suggestionSpan.setFlags(suggestionSpanFlags); 2563 } 2564 } 2565 2566 // Notify source IME of the suggestion pick. Do this before swapping texts. 2567 suggestionInfo.mSuggestionSpan.notifySelection( 2568 mTextView.getContext(), originalText, suggestionInfo.mSuggestionIndex); 2569 2570 // Swap text content between actual text and Suggestion span 2571 final int suggestionStart = suggestionInfo.mSuggestionStart; 2572 final int suggestionEnd = suggestionInfo.mSuggestionEnd; 2573 final String suggestion = suggestionInfo.mText.subSequence( 2574 suggestionStart, suggestionEnd).toString(); 2575 mTextView.replaceText_internal(spanStart, spanEnd, suggestion); 2576 2577 String[] suggestions = suggestionInfo.mSuggestionSpan.getSuggestions(); 2578 suggestions[suggestionInfo.mSuggestionIndex] = originalText; 2579 2580 // Restore previous SuggestionSpans 2581 final int lengthDelta = suggestion.length() - (spanEnd - spanStart); 2582 for (int i = 0; i < length; i++) { 2583 // Only spans that include the modified region make sense after replacement 2584 // Spans partially included in the replaced region are removed, there is no 2585 // way to assign them a valid range after replacement 2586 if (suggestionSpansStarts[i] <= spanStart && suggestionSpansEnds[i] >= spanEnd) { 2587 mTextView.setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i], 2588 suggestionSpansEnds[i] + lengthDelta, suggestionSpansFlags[i]); 2589 } 2590 } 2591 // Move cursor at the end of the replaced word 2592 final int newCursorPosition = spanEnd + lengthDelta; 2593 mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); 2594 } 2595 2596 private final MenuItem.OnMenuItemClickListener mOnContextMenuItemClickListener = 2597 new MenuItem.OnMenuItemClickListener() { 2598 @Override 2599 public boolean onMenuItemClick(MenuItem item) { 2600 if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { 2601 return true; 2602 } 2603 return mTextView.onTextContextMenuItem(item.getItemId()); 2604 } 2605 }; 2606 2607 private final MenuItem.OnMenuItemClickListener mOnContextMenuReplaceItemClickListener = 2608 new MenuItem.OnMenuItemClickListener() { 2609 @Override 2610 public boolean onMenuItemClick(MenuItem item) { 2611 int index = item.getOrder(); 2612 if (index < 0 || index >= mSuggestionInfosInContextMenu.length) { 2613 clear(); 2614 return false; 2615 } 2616 replaceWithSuggestion(mSuggestionInfosInContextMenu[index]); 2617 clear(); 2618 return true; 2619 } 2620 2621 private void clear() { 2622 for (final SuggestionInfo info : mSuggestionInfosInContextMenu) { 2623 info.clear(); 2624 } 2625 } 2626 }; 2627 2628 /** 2629 * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related 2630 * pop-up should be displayed. 2631 * Also monitors {@link Selection} to call back to the attached input method. 2632 */ 2633 class SpanController implements SpanWatcher { 2634 2635 private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs 2636 2637 private EasyEditPopupWindow mPopupWindow; 2638 2639 private Runnable mHidePopup; 2640 2641 // This function is pure but inner classes can't have static functions 2642 private boolean isNonIntermediateSelectionSpan(final Spannable text, 2643 final Object span) { 2644 return (Selection.SELECTION_START == span || Selection.SELECTION_END == span) 2645 && (text.getSpanFlags(span) & Spanned.SPAN_INTERMEDIATE) == 0; 2646 } 2647 2648 @Override 2649 public void onSpanAdded(Spannable text, Object span, int start, int end) { 2650 if (isNonIntermediateSelectionSpan(text, span)) { 2651 sendUpdateSelection(); 2652 } else if (span instanceof EasyEditSpan) { 2653 if (mPopupWindow == null) { 2654 mPopupWindow = new EasyEditPopupWindow(); 2655 mHidePopup = new Runnable() { 2656 @Override 2657 public void run() { 2658 hide(); 2659 } 2660 }; 2661 } 2662 2663 // Make sure there is only at most one EasyEditSpan in the text 2664 if (mPopupWindow.mEasyEditSpan != null) { 2665 mPopupWindow.mEasyEditSpan.setDeleteEnabled(false); 2666 } 2667 2668 mPopupWindow.setEasyEditSpan((EasyEditSpan) span); 2669 mPopupWindow.setOnDeleteListener(new EasyEditDeleteListener() { 2670 @Override 2671 public void onDeleteClick(EasyEditSpan span) { 2672 Editable editable = (Editable) mTextView.getText(); 2673 int start = editable.getSpanStart(span); 2674 int end = editable.getSpanEnd(span); 2675 if (start >= 0 && end >= 0) { 2676 sendEasySpanNotification(EasyEditSpan.TEXT_DELETED, span); 2677 mTextView.deleteText_internal(start, end); 2678 } 2679 editable.removeSpan(span); 2680 } 2681 }); 2682 2683 if (mTextView.getWindowVisibility() != View.VISIBLE) { 2684 // The window is not visible yet, ignore the text change. 2685 return; 2686 } 2687 2688 if (mTextView.getLayout() == null) { 2689 // The view has not been laid out yet, ignore the text change 2690 return; 2691 } 2692 2693 if (extractedTextModeWillBeStarted()) { 2694 // The input is in extract mode. Do not handle the easy edit in 2695 // the original TextView, as the ExtractEditText will do 2696 return; 2697 } 2698 2699 mPopupWindow.show(); 2700 mTextView.removeCallbacks(mHidePopup); 2701 mTextView.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS); 2702 } 2703 } 2704 2705 @Override 2706 public void onSpanRemoved(Spannable text, Object span, int start, int end) { 2707 if (isNonIntermediateSelectionSpan(text, span)) { 2708 sendUpdateSelection(); 2709 } else if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { 2710 hide(); 2711 } 2712 } 2713 2714 @Override 2715 public void onSpanChanged(Spannable text, Object span, int previousStart, int previousEnd, 2716 int newStart, int newEnd) { 2717 if (isNonIntermediateSelectionSpan(text, span)) { 2718 sendUpdateSelection(); 2719 } else if (mPopupWindow != null && span instanceof EasyEditSpan) { 2720 EasyEditSpan easyEditSpan = (EasyEditSpan) span; 2721 sendEasySpanNotification(EasyEditSpan.TEXT_MODIFIED, easyEditSpan); 2722 text.removeSpan(easyEditSpan); 2723 } 2724 } 2725 2726 public void hide() { 2727 if (mPopupWindow != null) { 2728 mPopupWindow.hide(); 2729 mTextView.removeCallbacks(mHidePopup); 2730 } 2731 } 2732 2733 private void sendEasySpanNotification(int textChangedType, EasyEditSpan span) { 2734 try { 2735 PendingIntent pendingIntent = span.getPendingIntent(); 2736 if (pendingIntent != null) { 2737 Intent intent = new Intent(); 2738 intent.putExtra(EasyEditSpan.EXTRA_TEXT_CHANGED_TYPE, textChangedType); 2739 pendingIntent.send(mTextView.getContext(), 0, intent); 2740 } 2741 } catch (CanceledException e) { 2742 // This should not happen, as we should try to send the intent only once. 2743 Log.w(TAG, "PendingIntent for notification cannot be sent", e); 2744 } 2745 } 2746 } 2747 2748 /** 2749 * Listens for the delete event triggered by {@link EasyEditPopupWindow}. 2750 */ 2751 private interface EasyEditDeleteListener { 2752 2753 /** 2754 * Clicks the delete pop-up. 2755 */ 2756 void onDeleteClick(EasyEditSpan span); 2757 } 2758 2759 /** 2760 * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled 2761 * by {@link SpanController}. 2762 */ 2763 private class EasyEditPopupWindow extends PinnedPopupWindow 2764 implements OnClickListener { 2765 private static final int POPUP_TEXT_LAYOUT = 2766 com.android.internal.R.layout.text_edit_action_popup_text; 2767 private TextView mDeleteTextView; 2768 private EasyEditSpan mEasyEditSpan; 2769 private EasyEditDeleteListener mOnDeleteListener; 2770 2771 @Override 2772 protected void createPopupWindow() { 2773 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 2774 com.android.internal.R.attr.textSelectHandleWindowStyle); 2775 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 2776 mPopupWindow.setClippingEnabled(true); 2777 } 2778 2779 @Override 2780 protected void initContentView() { 2781 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 2782 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 2783 mContentView = linearLayout; 2784 mContentView.setBackgroundResource( 2785 com.android.internal.R.drawable.text_edit_side_paste_window); 2786 2787 LayoutInflater inflater = (LayoutInflater)mTextView.getContext(). 2788 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2789 2790 LayoutParams wrapContent = new LayoutParams( 2791 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 2792 2793 mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2794 mDeleteTextView.setLayoutParams(wrapContent); 2795 mDeleteTextView.setText(com.android.internal.R.string.delete); 2796 mDeleteTextView.setOnClickListener(this); 2797 mContentView.addView(mDeleteTextView); 2798 } 2799 2800 public void setEasyEditSpan(EasyEditSpan easyEditSpan) { 2801 mEasyEditSpan = easyEditSpan; 2802 } 2803 2804 private void setOnDeleteListener(EasyEditDeleteListener listener) { 2805 mOnDeleteListener = listener; 2806 } 2807 2808 @Override 2809 public void onClick(View view) { 2810 if (view == mDeleteTextView 2811 && mEasyEditSpan != null && mEasyEditSpan.isDeleteEnabled() 2812 && mOnDeleteListener != null) { 2813 mOnDeleteListener.onDeleteClick(mEasyEditSpan); 2814 } 2815 } 2816 2817 @Override 2818 public void hide() { 2819 if (mEasyEditSpan != null) { 2820 mEasyEditSpan.setDeleteEnabled(false); 2821 } 2822 mOnDeleteListener = null; 2823 super.hide(); 2824 } 2825 2826 @Override 2827 protected int getTextOffset() { 2828 // Place the pop-up at the end of the span 2829 Editable editable = (Editable) mTextView.getText(); 2830 return editable.getSpanEnd(mEasyEditSpan); 2831 } 2832 2833 @Override 2834 protected int getVerticalLocalPosition(int line) { 2835 return mTextView.getLayout().getLineBottom(line); 2836 } 2837 2838 @Override 2839 protected int clipVertically(int positionY) { 2840 // As we display the pop-up below the span, no vertical clipping is required. 2841 return positionY; 2842 } 2843 } 2844 2845 private class PositionListener implements ViewTreeObserver.OnPreDrawListener { 2846 // 3 handles 2847 // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others) 2848 // 1 CursorAnchorInfoNotifier 2849 private final int MAXIMUM_NUMBER_OF_LISTENERS = 7; 2850 private TextViewPositionListener[] mPositionListeners = 2851 new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS]; 2852 private boolean mCanMove[] = new boolean[MAXIMUM_NUMBER_OF_LISTENERS]; 2853 private boolean mPositionHasChanged = true; 2854 // Absolute position of the TextView with respect to its parent window 2855 private int mPositionX, mPositionY; 2856 private int mNumberOfListeners; 2857 private boolean mScrollHasChanged; 2858 final int[] mTempCoords = new int[2]; 2859 2860 public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) { 2861 if (mNumberOfListeners == 0) { 2862 updatePosition(); 2863 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2864 vto.addOnPreDrawListener(this); 2865 } 2866 2867 int emptySlotIndex = -1; 2868 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2869 TextViewPositionListener listener = mPositionListeners[i]; 2870 if (listener == positionListener) { 2871 return; 2872 } else if (emptySlotIndex < 0 && listener == null) { 2873 emptySlotIndex = i; 2874 } 2875 } 2876 2877 mPositionListeners[emptySlotIndex] = positionListener; 2878 mCanMove[emptySlotIndex] = canMove; 2879 mNumberOfListeners++; 2880 } 2881 2882 public void removeSubscriber(TextViewPositionListener positionListener) { 2883 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2884 if (mPositionListeners[i] == positionListener) { 2885 mPositionListeners[i] = null; 2886 mNumberOfListeners--; 2887 break; 2888 } 2889 } 2890 2891 if (mNumberOfListeners == 0) { 2892 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2893 vto.removeOnPreDrawListener(this); 2894 } 2895 } 2896 2897 public int getPositionX() { 2898 return mPositionX; 2899 } 2900 2901 public int getPositionY() { 2902 return mPositionY; 2903 } 2904 2905 @Override 2906 public boolean onPreDraw() { 2907 updatePosition(); 2908 2909 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2910 if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) { 2911 TextViewPositionListener positionListener = mPositionListeners[i]; 2912 if (positionListener != null) { 2913 positionListener.updatePosition(mPositionX, mPositionY, 2914 mPositionHasChanged, mScrollHasChanged); 2915 } 2916 } 2917 } 2918 2919 mScrollHasChanged = false; 2920 return true; 2921 } 2922 2923 private void updatePosition() { 2924 mTextView.getLocationInWindow(mTempCoords); 2925 2926 mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY; 2927 2928 mPositionX = mTempCoords[0]; 2929 mPositionY = mTempCoords[1]; 2930 } 2931 2932 public void onScrollChanged() { 2933 mScrollHasChanged = true; 2934 } 2935 } 2936 2937 private abstract class PinnedPopupWindow implements TextViewPositionListener { 2938 protected PopupWindow mPopupWindow; 2939 protected ViewGroup mContentView; 2940 int mPositionX, mPositionY; 2941 int mClippingLimitLeft, mClippingLimitRight; 2942 2943 protected abstract void createPopupWindow(); 2944 protected abstract void initContentView(); 2945 protected abstract int getTextOffset(); 2946 protected abstract int getVerticalLocalPosition(int line); 2947 protected abstract int clipVertically(int positionY); 2948 2949 public PinnedPopupWindow() { 2950 createPopupWindow(); 2951 2952 mPopupWindow.setWindowLayoutType( 2953 WindowManager.LayoutParams.TYPE_APPLICATION_ABOVE_SUB_PANEL); 2954 mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 2955 mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 2956 2957 initContentView(); 2958 2959 LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2960 ViewGroup.LayoutParams.WRAP_CONTENT); 2961 mContentView.setLayoutParams(wrapContent); 2962 2963 mPopupWindow.setContentView(mContentView); 2964 } 2965 2966 public void show() { 2967 getPositionListener().addSubscriber(this, false /* offset is fixed */); 2968 2969 computeLocalPosition(); 2970 2971 final PositionListener positionListener = getPositionListener(); 2972 updatePosition(positionListener.getPositionX(), positionListener.getPositionY()); 2973 } 2974 2975 protected void measureContent() { 2976 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2977 mContentView.measure( 2978 View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, 2979 View.MeasureSpec.AT_MOST), 2980 View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, 2981 View.MeasureSpec.AT_MOST)); 2982 } 2983 2984 /* The popup window will be horizontally centered on the getTextOffset() and vertically 2985 * positioned according to viewportToContentHorizontalOffset. 2986 * 2987 * This method assumes that mContentView has properly been measured from its content. */ 2988 private void computeLocalPosition() { 2989 measureContent(); 2990 final int width = mContentView.getMeasuredWidth(); 2991 final int offset = getTextOffset(); 2992 mPositionX = (int) (mTextView.getLayout().getPrimaryHorizontal(offset) - width / 2.0f); 2993 mPositionX += mTextView.viewportToContentHorizontalOffset(); 2994 2995 final int line = mTextView.getLayout().getLineForOffset(offset); 2996 mPositionY = getVerticalLocalPosition(line); 2997 mPositionY += mTextView.viewportToContentVerticalOffset(); 2998 } 2999 3000 private void updatePosition(int parentPositionX, int parentPositionY) { 3001 int positionX = parentPositionX + mPositionX; 3002 int positionY = parentPositionY + mPositionY; 3003 3004 positionY = clipVertically(positionY); 3005 3006 // Horizontal clipping 3007 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3008 final int width = mContentView.getMeasuredWidth(); 3009 positionX = Math.min( 3010 displayMetrics.widthPixels - width + mClippingLimitRight, positionX); 3011 positionX = Math.max(-mClippingLimitLeft, positionX); 3012 3013 if (isShowing()) { 3014 mPopupWindow.update(positionX, positionY, -1, -1); 3015 } else { 3016 mPopupWindow.showAtLocation(mTextView, Gravity.NO_GRAVITY, 3017 positionX, positionY); 3018 } 3019 } 3020 3021 public void hide() { 3022 if (!isShowing()) { 3023 return; 3024 } 3025 mPopupWindow.dismiss(); 3026 getPositionListener().removeSubscriber(this); 3027 } 3028 3029 @Override 3030 public void updatePosition(int parentPositionX, int parentPositionY, 3031 boolean parentPositionChanged, boolean parentScrolled) { 3032 // Either parentPositionChanged or parentScrolled is true, check if still visible 3033 if (isShowing() && isOffsetVisible(getTextOffset())) { 3034 if (parentScrolled) computeLocalPosition(); 3035 updatePosition(parentPositionX, parentPositionY); 3036 } else { 3037 hide(); 3038 } 3039 } 3040 3041 public boolean isShowing() { 3042 return mPopupWindow.isShowing(); 3043 } 3044 } 3045 3046 private static class SuggestionInfo { 3047 // Range of actual suggestion within mText 3048 int mSuggestionStart, mSuggestionEnd; 3049 3050 // The SuggestionSpan that this TextView represents 3051 @Nullable 3052 SuggestionSpan mSuggestionSpan; 3053 3054 // The SuggestionSpan start position 3055 int mSuggestionSpanStart; 3056 3057 // The SuggestionSpan end position 3058 int mSuggestionSpanEnd; 3059 3060 // The index of this suggestion inside suggestionSpan 3061 int mSuggestionIndex; 3062 3063 final SpannableStringBuilder mText = new SpannableStringBuilder(); 3064 3065 void clear() { 3066 mSuggestionSpan = null; 3067 mText.clear(); 3068 } 3069 } 3070 3071 private class SuggestionHelper { 3072 private final Comparator<SuggestionSpan> mSuggestionSpanComparator = 3073 new SuggestionSpanComparator(); 3074 private final HashMap<SuggestionSpan, Integer> mSpansLengths = 3075 new HashMap<SuggestionSpan, Integer>(); 3076 3077 private class SuggestionSpanComparator implements Comparator<SuggestionSpan> { 3078 public int compare(SuggestionSpan span1, SuggestionSpan span2) { 3079 final int flag1 = span1.getFlags(); 3080 final int flag2 = span2.getFlags(); 3081 if (flag1 != flag2) { 3082 // The order here should match what is used in updateDrawState 3083 final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 3084 final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 3085 final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0; 3086 final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0; 3087 if (easy1 && !misspelled1) return -1; 3088 if (easy2 && !misspelled2) return 1; 3089 if (misspelled1) return -1; 3090 if (misspelled2) return 1; 3091 } 3092 3093 return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue(); 3094 } 3095 } 3096 3097 /** 3098 * Returns the suggestion spans that cover the current cursor position. The suggestion 3099 * spans are sorted according to the length of text that they are attached to. 3100 */ 3101 private SuggestionSpan[] getSortedSuggestionSpans() { 3102 int pos = mTextView.getSelectionStart(); 3103 Spannable spannable = (Spannable) mTextView.getText(); 3104 SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class); 3105 3106 mSpansLengths.clear(); 3107 for (SuggestionSpan suggestionSpan : suggestionSpans) { 3108 int start = spannable.getSpanStart(suggestionSpan); 3109 int end = spannable.getSpanEnd(suggestionSpan); 3110 mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start)); 3111 } 3112 3113 // The suggestions are sorted according to their types (easy correction first, then 3114 // misspelled) and to the length of the text that they cover (shorter first). 3115 Arrays.sort(suggestionSpans, mSuggestionSpanComparator); 3116 mSpansLengths.clear(); 3117 3118 return suggestionSpans; 3119 } 3120 3121 /** 3122 * Gets the SuggestionInfo list that contains suggestion information at the current cursor 3123 * position. 3124 * 3125 * @param suggestionInfos SuggestionInfo array the results will be set. 3126 * @return the number of suggestions actually fetched. 3127 */ 3128 public int getSuggestionInfo(SuggestionInfo[] suggestionInfos) { 3129 final Spannable spannable = (Spannable) mTextView.getText(); 3130 final SuggestionSpan[] suggestionSpans = getSortedSuggestionSpans(); 3131 final int nbSpans = suggestionSpans.length; 3132 if (nbSpans == 0) return 0; 3133 3134 int numberOfSuggestions = 0; 3135 for (int spanIndex = 0; spanIndex < nbSpans; spanIndex++) { 3136 final SuggestionSpan suggestionSpan = suggestionSpans[spanIndex]; 3137 final int spanStart = spannable.getSpanStart(suggestionSpan); 3138 final int spanEnd = spannable.getSpanEnd(suggestionSpan); 3139 3140 final String[] suggestions = suggestionSpan.getSuggestions(); 3141 final int nbSuggestions = suggestions.length; 3142 for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) { 3143 final String suggestion = suggestions[suggestionIndex]; 3144 boolean suggestionIsDuplicate = false; 3145 for (int i = 0; i < numberOfSuggestions; i++) { 3146 if (suggestionInfos[i].mText.toString().equals(suggestion)) { 3147 final SuggestionSpan otherSuggestionSpan = 3148 suggestionInfos[i].mSuggestionSpan; 3149 final int otherSpanStart = spannable.getSpanStart(otherSuggestionSpan); 3150 final int otherSpanEnd = spannable.getSpanEnd(otherSuggestionSpan); 3151 if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) { 3152 suggestionIsDuplicate = true; 3153 break; 3154 } 3155 } 3156 } 3157 3158 if (suggestionIsDuplicate) { 3159 continue; 3160 } 3161 SuggestionInfo suggestionInfo = suggestionInfos[numberOfSuggestions]; 3162 suggestionInfo.mSuggestionSpan = suggestionSpan; 3163 suggestionInfo.mSuggestionIndex = suggestionIndex; 3164 suggestionInfo.mSuggestionStart = 0; 3165 suggestionInfo.mSuggestionEnd = suggestion.length(); 3166 suggestionInfo.mSuggestionSpanStart = spanStart; 3167 suggestionInfo.mSuggestionSpanEnd = spanEnd; 3168 suggestionInfo.mText.replace(0, suggestionInfo.mText.length(), suggestion); 3169 numberOfSuggestions++; 3170 if (numberOfSuggestions >= suggestionInfos.length) { 3171 return numberOfSuggestions; 3172 } 3173 } 3174 } 3175 return numberOfSuggestions; 3176 } 3177 } 3178 3179 @VisibleForTesting 3180 public class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener { 3181 private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE; 3182 3183 // Key of intent extras for inserting new word into user dictionary. 3184 private static final String USER_DICTIONARY_EXTRA_WORD = "word"; 3185 private static final String USER_DICTIONARY_EXTRA_LOCALE = "locale"; 3186 3187 private SuggestionInfo[] mSuggestionInfos; 3188 private int mNumberOfSuggestions; 3189 private boolean mCursorWasVisibleBeforeSuggestions; 3190 private boolean mIsShowingUp = false; 3191 private SuggestionAdapter mSuggestionsAdapter; 3192 private final TextAppearanceSpan mHighlightSpan = new TextAppearanceSpan( 3193 mTextView.getContext(), mTextView.mTextEditSuggestionHighlightStyle); 3194 private TextView mAddToDictionaryButton; 3195 private TextView mDeleteButton; 3196 private SuggestionSpan mMisspelledSpan; 3197 private int mContainerMarginWidth; 3198 private int mContainerMarginTop; 3199 3200 private class CustomPopupWindow extends PopupWindow { 3201 @Override 3202 public void dismiss() { 3203 if (!isShowing()) { 3204 return; 3205 } 3206 super.dismiss(); 3207 getPositionListener().removeSubscriber(SuggestionsPopupWindow.this); 3208 3209 // Safe cast since show() checks that mTextView.getText() is an Editable 3210 ((Spannable) mTextView.getText()).removeSpan(mSuggestionRangeSpan); 3211 3212 mTextView.setCursorVisible(mCursorWasVisibleBeforeSuggestions); 3213 if (hasInsertionController() && !extractedTextModeWillBeStarted()) { 3214 getInsertionController().show(); 3215 } 3216 } 3217 } 3218 3219 public SuggestionsPopupWindow() { 3220 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 3221 } 3222 3223 @Override 3224 protected void createPopupWindow() { 3225 mPopupWindow = new CustomPopupWindow(); 3226 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 3227 mPopupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT)); 3228 mPopupWindow.setFocusable(true); 3229 mPopupWindow.setClippingEnabled(false); 3230 } 3231 3232 @Override 3233 protected void initContentView() { 3234 final LayoutInflater inflater = (LayoutInflater) mTextView.getContext(). 3235 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 3236 final ViewGroup relativeLayout = (ViewGroup) inflater.inflate( 3237 mTextView.mTextEditSuggestionContainerLayout, null); 3238 3239 final LinearLayout suggestionWindowContainer = 3240 (LinearLayout) relativeLayout.findViewById( 3241 com.android.internal.R.id.suggestionWindowContainer); 3242 ViewGroup.MarginLayoutParams lp = 3243 (ViewGroup.MarginLayoutParams) suggestionWindowContainer.getLayoutParams(); 3244 mContainerMarginWidth = lp.leftMargin + lp.rightMargin; 3245 mContainerMarginTop = lp.topMargin; 3246 mClippingLimitLeft = lp.leftMargin; 3247 mClippingLimitRight = lp.rightMargin; 3248 3249 final ListView suggestionListView = (ListView) relativeLayout.findViewById( 3250 com.android.internal.R.id.suggestionContainer); 3251 3252 mSuggestionsAdapter = new SuggestionAdapter(); 3253 suggestionListView.setAdapter(mSuggestionsAdapter); 3254 suggestionListView.setOnItemClickListener(this); 3255 3256 // Inflate the suggestion items once and for all. 3257 mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS]; 3258 for (int i = 0; i < mSuggestionInfos.length; i++) { 3259 mSuggestionInfos[i] = new SuggestionInfo(); 3260 } 3261 3262 mContentView = relativeLayout; 3263 3264 mAddToDictionaryButton = (TextView) relativeLayout.findViewById( 3265 com.android.internal.R.id.addToDictionaryButton); 3266 mAddToDictionaryButton.setOnClickListener(new View.OnClickListener() { 3267 public void onClick(View v) { 3268 final Editable editable = (Editable) mTextView.getText(); 3269 final int spanStart = editable.getSpanStart(mMisspelledSpan); 3270 final int spanEnd = editable.getSpanEnd(mMisspelledSpan); 3271 final String originalText = TextUtils.substring(editable, spanStart, spanEnd); 3272 3273 final Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT); 3274 intent.putExtra(USER_DICTIONARY_EXTRA_WORD, originalText); 3275 intent.putExtra(USER_DICTIONARY_EXTRA_LOCALE, 3276 mTextView.getTextServicesLocale().toString()); 3277 intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); 3278 mTextView.getContext().startActivity(intent); 3279 // There is no way to know if the word was indeed added. Re-check. 3280 // TODO The ExtractEditText should remove the span in the original text instead 3281 editable.removeSpan(mMisspelledSpan); 3282 Selection.setSelection(editable, spanEnd); 3283 updateSpellCheckSpans(spanStart, spanEnd, false); 3284 hideWithCleanUp(); 3285 } 3286 }); 3287 3288 mDeleteButton = (TextView) relativeLayout.findViewById( 3289 com.android.internal.R.id.deleteButton); 3290 mDeleteButton.setOnClickListener(new View.OnClickListener() { 3291 public void onClick(View v) { 3292 final Editable editable = (Editable) mTextView.getText(); 3293 3294 final int spanUnionStart = editable.getSpanStart(mSuggestionRangeSpan); 3295 int spanUnionEnd = editable.getSpanEnd(mSuggestionRangeSpan); 3296 if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) { 3297 // Do not leave two adjacent spaces after deletion, or one at beginning of 3298 // text 3299 if (spanUnionEnd < editable.length() && 3300 Character.isSpaceChar(editable.charAt(spanUnionEnd)) && 3301 (spanUnionStart == 0 || 3302 Character.isSpaceChar(editable.charAt(spanUnionStart - 1)))) { 3303 spanUnionEnd = spanUnionEnd + 1; 3304 } 3305 mTextView.deleteText_internal(spanUnionStart, spanUnionEnd); 3306 } 3307 hideWithCleanUp(); 3308 } 3309 }); 3310 3311 } 3312 3313 public boolean isShowingUp() { 3314 return mIsShowingUp; 3315 } 3316 3317 public void onParentLostFocus() { 3318 mIsShowingUp = false; 3319 } 3320 3321 private class SuggestionAdapter extends BaseAdapter { 3322 private LayoutInflater mInflater = (LayoutInflater) mTextView.getContext(). 3323 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 3324 3325 @Override 3326 public int getCount() { 3327 return mNumberOfSuggestions; 3328 } 3329 3330 @Override 3331 public Object getItem(int position) { 3332 return mSuggestionInfos[position]; 3333 } 3334 3335 @Override 3336 public long getItemId(int position) { 3337 return position; 3338 } 3339 3340 @Override 3341 public View getView(int position, View convertView, ViewGroup parent) { 3342 TextView textView = (TextView) convertView; 3343 3344 if (textView == null) { 3345 textView = (TextView) mInflater.inflate(mTextView.mTextEditSuggestionItemLayout, 3346 parent, false); 3347 } 3348 3349 final SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 3350 textView.setText(suggestionInfo.mText); 3351 return textView; 3352 } 3353 } 3354 3355 @VisibleForTesting 3356 public ViewGroup getContentViewForTesting() { 3357 return mContentView; 3358 } 3359 3360 @Override 3361 public void show() { 3362 if (!(mTextView.getText() instanceof Editable)) return; 3363 if (extractedTextModeWillBeStarted()) { 3364 return; 3365 } 3366 3367 if (updateSuggestions()) { 3368 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 3369 mTextView.setCursorVisible(false); 3370 mIsShowingUp = true; 3371 super.show(); 3372 } 3373 } 3374 3375 @Override 3376 protected void measureContent() { 3377 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3378 final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec( 3379 displayMetrics.widthPixels, View.MeasureSpec.AT_MOST); 3380 final int verticalMeasure = View.MeasureSpec.makeMeasureSpec( 3381 displayMetrics.heightPixels, View.MeasureSpec.AT_MOST); 3382 3383 int width = 0; 3384 View view = null; 3385 for (int i = 0; i < mNumberOfSuggestions; i++) { 3386 view = mSuggestionsAdapter.getView(i, view, mContentView); 3387 view.getLayoutParams().width = LayoutParams.WRAP_CONTENT; 3388 view.measure(horizontalMeasure, verticalMeasure); 3389 width = Math.max(width, view.getMeasuredWidth()); 3390 } 3391 3392 if (mAddToDictionaryButton.getVisibility() != View.GONE) { 3393 mAddToDictionaryButton.measure(horizontalMeasure, verticalMeasure); 3394 width = Math.max(width, mAddToDictionaryButton.getMeasuredWidth()); 3395 } 3396 3397 mDeleteButton.measure(horizontalMeasure, verticalMeasure); 3398 width = Math.max(width, mDeleteButton.getMeasuredWidth()); 3399 3400 width += mContainerMarginWidth; 3401 3402 // Enforce the width based on actual text widths 3403 mContentView.measure( 3404 View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY), 3405 verticalMeasure); 3406 3407 Drawable popupBackground = mPopupWindow.getBackground(); 3408 if (popupBackground != null) { 3409 if (mTempRect == null) mTempRect = new Rect(); 3410 popupBackground.getPadding(mTempRect); 3411 width += mTempRect.left + mTempRect.right; 3412 } 3413 mPopupWindow.setWidth(width); 3414 } 3415 3416 @Override 3417 protected int getTextOffset() { 3418 return mTextView.getSelectionStart(); 3419 } 3420 3421 @Override 3422 protected int getVerticalLocalPosition(int line) { 3423 return mTextView.getLayout().getLineBottom(line) - mContainerMarginTop; 3424 } 3425 3426 @Override 3427 protected int clipVertically(int positionY) { 3428 final int height = mContentView.getMeasuredHeight(); 3429 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3430 return Math.min(positionY, displayMetrics.heightPixels - height); 3431 } 3432 3433 private void hideWithCleanUp() { 3434 for (final SuggestionInfo info : mSuggestionInfos) { 3435 info.clear(); 3436 } 3437 mMisspelledSpan = null; 3438 hide(); 3439 } 3440 3441 private boolean updateSuggestions() { 3442 Spannable spannable = (Spannable) mTextView.getText(); 3443 mNumberOfSuggestions = 3444 mSuggestionHelper.getSuggestionInfo(mSuggestionInfos); 3445 if (mNumberOfSuggestions == 0) { 3446 return false; 3447 } 3448 3449 int spanUnionStart = mTextView.getText().length(); 3450 int spanUnionEnd = 0; 3451 3452 mMisspelledSpan = null; 3453 for (int i = 0; i < mNumberOfSuggestions; i++) { 3454 final SuggestionInfo suggestionInfo = mSuggestionInfos[i]; 3455 final SuggestionSpan suggestionSpan = suggestionInfo.mSuggestionSpan; 3456 if ((suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) { 3457 mMisspelledSpan = suggestionSpan; 3458 } 3459 spanUnionStart = Math.min(spanUnionStart, suggestionInfo.mSuggestionSpanStart); 3460 spanUnionEnd = Math.max(spanUnionEnd, suggestionInfo.mSuggestionSpanEnd); 3461 } 3462 3463 for (int i = 0; i < mNumberOfSuggestions; i++) { 3464 highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd); 3465 } 3466 3467 // Make "Add to dictionary" item visible if there is a span with the misspelled flag 3468 int addToDictionaryButtonVisibility = View.GONE; 3469 if (mMisspelledSpan != null) { 3470 final int misspelledStart = spannable.getSpanStart(mMisspelledSpan); 3471 final int misspelledEnd = spannable.getSpanEnd(mMisspelledSpan); 3472 if (misspelledStart >= 0 && misspelledEnd > misspelledStart) { 3473 addToDictionaryButtonVisibility = View.VISIBLE; 3474 } 3475 } 3476 mAddToDictionaryButton.setVisibility(addToDictionaryButtonVisibility); 3477 3478 if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan(); 3479 final int underlineColor = mSuggestionInfos[0].mSuggestionSpan.getUnderlineColor(); 3480 if (underlineColor == 0) { 3481 // Fallback on the default highlight color when the first span does not provide one 3482 mSuggestionRangeSpan.setBackgroundColor(mTextView.mHighlightColor); 3483 } else { 3484 final float BACKGROUND_TRANSPARENCY = 0.4f; 3485 final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY); 3486 mSuggestionRangeSpan.setBackgroundColor( 3487 (underlineColor & 0x00FFFFFF) + (newAlpha << 24)); 3488 } 3489 spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd, 3490 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 3491 3492 mSuggestionsAdapter.notifyDataSetChanged(); 3493 return true; 3494 } 3495 3496 private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart, 3497 int unionEnd) { 3498 final Spannable text = (Spannable) mTextView.getText(); 3499 final int spanStart = suggestionInfo.mSuggestionSpanStart; 3500 final int spanEnd = suggestionInfo.mSuggestionSpanEnd; 3501 3502 // Adjust the start/end of the suggestion span 3503 suggestionInfo.mSuggestionStart = spanStart - unionStart; 3504 suggestionInfo.mSuggestionEnd = suggestionInfo.mSuggestionStart 3505 + suggestionInfo.mText.length(); 3506 3507 suggestionInfo.mText.setSpan(mHighlightSpan, 0, suggestionInfo.mText.length(), 3508 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 3509 3510 // Add the text before and after the span. 3511 final String textAsString = text.toString(); 3512 suggestionInfo.mText.insert(0, textAsString.substring(unionStart, spanStart)); 3513 suggestionInfo.mText.append(textAsString.substring(spanEnd, unionEnd)); 3514 } 3515 3516 @Override 3517 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 3518 SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 3519 replaceWithSuggestion(suggestionInfo); 3520 hideWithCleanUp(); 3521 } 3522 } 3523 3524 /** 3525 * An ActionMode Callback class that is used to provide actions while in text insertion or 3526 * selection mode. 3527 * 3528 * The default callback provides a subset of Select All, Cut, Copy, Paste, Share and Replace 3529 * actions, depending on which of these this TextView supports and the current selection. 3530 */ 3531 private class TextActionModeCallback extends ActionMode.Callback2 { 3532 private final Path mSelectionPath = new Path(); 3533 private final RectF mSelectionBounds = new RectF(); 3534 private final boolean mHasSelection; 3535 3536 private int mHandleHeight; 3537 3538 public TextActionModeCallback(boolean hasSelection) { 3539 mHasSelection = hasSelection; 3540 if (mHasSelection) { 3541 SelectionModifierCursorController selectionController = getSelectionController(); 3542 if (selectionController.mStartHandle == null) { 3543 // As these are for initializing selectionController, hide() must be called. 3544 selectionController.initDrawables(); 3545 selectionController.initHandles(); 3546 selectionController.hide(); 3547 } 3548 mHandleHeight = Math.max( 3549 mSelectHandleLeft.getMinimumHeight(), 3550 mSelectHandleRight.getMinimumHeight()); 3551 } else { 3552 InsertionPointCursorController insertionController = getInsertionController(); 3553 if (insertionController != null) { 3554 insertionController.getHandle(); 3555 mHandleHeight = mSelectHandleCenter.getMinimumHeight(); 3556 } 3557 } 3558 } 3559 3560 @Override 3561 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 3562 mode.setTitle(null); 3563 mode.setSubtitle(null); 3564 mode.setTitleOptionalHint(true); 3565 populateMenuWithItems(menu); 3566 3567 Callback customCallback = getCustomCallback(); 3568 if (customCallback != null) { 3569 if (!customCallback.onCreateActionMode(mode, menu)) { 3570 // The custom mode can choose to cancel the action mode, dismiss selection. 3571 Selection.setSelection((Spannable) mTextView.getText(), 3572 mTextView.getSelectionEnd()); 3573 return false; 3574 } 3575 } 3576 3577 if (mTextView.canProcessText()) { 3578 mProcessTextIntentActionsHandler.onInitializeMenu(menu); 3579 } 3580 3581 if (menu.hasVisibleItems() || mode.getCustomView() != null) { 3582 return true; 3583 } else { 3584 return false; 3585 } 3586 } 3587 3588 private Callback getCustomCallback() { 3589 return mHasSelection 3590 ? mCustomSelectionActionModeCallback 3591 : mCustomInsertionActionModeCallback; 3592 } 3593 3594 private void populateMenuWithItems(Menu menu) { 3595 if (mTextView.canCut()) { 3596 menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, 3597 com.android.internal.R.string.cut). 3598 setAlphabeticShortcut('x'). 3599 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3600 } 3601 3602 if (mTextView.canCopy()) { 3603 menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, 3604 com.android.internal.R.string.copy). 3605 setAlphabeticShortcut('c'). 3606 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3607 } 3608 3609 if (mTextView.canPaste()) { 3610 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, 3611 com.android.internal.R.string.paste). 3612 setAlphabeticShortcut('v'). 3613 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3614 } 3615 3616 if (mTextView.canShare()) { 3617 menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, 3618 com.android.internal.R.string.share). 3619 setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3620 } 3621 3622 updateSelectAllItem(menu); 3623 updateReplaceItem(menu); 3624 } 3625 3626 @Override 3627 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 3628 updateSelectAllItem(menu); 3629 updateReplaceItem(menu); 3630 3631 Callback customCallback = getCustomCallback(); 3632 if (customCallback != null) { 3633 return customCallback.onPrepareActionMode(mode, menu); 3634 } 3635 return true; 3636 } 3637 3638 private void updateSelectAllItem(Menu menu) { 3639 boolean canSelectAll = mTextView.canSelectAllText(); 3640 boolean selectAllItemExists = menu.findItem(TextView.ID_SELECT_ALL) != null; 3641 if (canSelectAll && !selectAllItemExists) { 3642 menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, 3643 com.android.internal.R.string.selectAll) 3644 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3645 } else if (!canSelectAll && selectAllItemExists) { 3646 menu.removeItem(TextView.ID_SELECT_ALL); 3647 } 3648 } 3649 3650 private void updateReplaceItem(Menu menu) { 3651 boolean canReplace = mTextView.isSuggestionsEnabled() && shouldOfferToShowSuggestions(); 3652 boolean replaceItemExists = menu.findItem(TextView.ID_REPLACE) != null; 3653 if (canReplace && !replaceItemExists) { 3654 menu.add(Menu.NONE, TextView.ID_REPLACE, MENU_ITEM_ORDER_REPLACE, 3655 com.android.internal.R.string.replace) 3656 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3657 } else if (!canReplace && replaceItemExists) { 3658 menu.removeItem(TextView.ID_REPLACE); 3659 } 3660 } 3661 3662 @Override 3663 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 3664 if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { 3665 return true; 3666 } 3667 Callback customCallback = getCustomCallback(); 3668 if (customCallback != null && customCallback.onActionItemClicked(mode, item)) { 3669 return true; 3670 } 3671 return mTextView.onTextContextMenuItem(item.getItemId()); 3672 } 3673 3674 @Override 3675 public void onDestroyActionMode(ActionMode mode) { 3676 Callback customCallback = getCustomCallback(); 3677 if (customCallback != null) { 3678 customCallback.onDestroyActionMode(mode); 3679 } 3680 3681 if (!mPreserveSelection) { 3682 /* 3683 * Leave current selection when we tentatively destroy action mode for the 3684 * selection. If we're detaching from a window, we'll bring back the selection 3685 * mode when (if) we get reattached. 3686 */ 3687 Selection.setSelection((Spannable) mTextView.getText(), 3688 mTextView.getSelectionEnd()); 3689 } 3690 3691 if (mSelectionModifierCursorController != null) { 3692 mSelectionModifierCursorController.hide(); 3693 } 3694 3695 mTextActionMode = null; 3696 } 3697 3698 @Override 3699 public void onGetContentRect(ActionMode mode, View view, Rect outRect) { 3700 if (!view.equals(mTextView) || mTextView.getLayout() == null) { 3701 super.onGetContentRect(mode, view, outRect); 3702 return; 3703 } 3704 if (mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 3705 // We have a selection. 3706 mSelectionPath.reset(); 3707 mTextView.getLayout().getSelectionPath( 3708 mTextView.getSelectionStart(), mTextView.getSelectionEnd(), mSelectionPath); 3709 mSelectionPath.computeBounds(mSelectionBounds, true); 3710 mSelectionBounds.bottom += mHandleHeight; 3711 } else if (mCursorCount == 2) { 3712 // We have a split cursor. In this case, we take the rectangle that includes both 3713 // parts of the cursor to ensure we don't obscure either of them. 3714 Rect firstCursorBounds = mCursorDrawable[0].getBounds(); 3715 Rect secondCursorBounds = mCursorDrawable[1].getBounds(); 3716 mSelectionBounds.set( 3717 Math.min(firstCursorBounds.left, secondCursorBounds.left), 3718 Math.min(firstCursorBounds.top, secondCursorBounds.top), 3719 Math.max(firstCursorBounds.right, secondCursorBounds.right), 3720 Math.max(firstCursorBounds.bottom, secondCursorBounds.bottom) 3721 + mHandleHeight); 3722 } else { 3723 // We have a single cursor. 3724 Layout layout = getActiveLayout(); 3725 int line = layout.getLineForOffset(mTextView.getSelectionStart()); 3726 float primaryHorizontal = 3727 layout.getPrimaryHorizontal(mTextView.getSelectionStart()); 3728 mSelectionBounds.set( 3729 primaryHorizontal, 3730 layout.getLineTop(line), 3731 primaryHorizontal, 3732 layout.getLineTop(line + 1) + mHandleHeight); 3733 } 3734 // Take TextView's padding and scroll into account. 3735 int textHorizontalOffset = mTextView.viewportToContentHorizontalOffset(); 3736 int textVerticalOffset = mTextView.viewportToContentVerticalOffset(); 3737 outRect.set( 3738 (int) Math.floor(mSelectionBounds.left + textHorizontalOffset), 3739 (int) Math.floor(mSelectionBounds.top + textVerticalOffset), 3740 (int) Math.ceil(mSelectionBounds.right + textHorizontalOffset), 3741 (int) Math.ceil(mSelectionBounds.bottom + textVerticalOffset)); 3742 } 3743 } 3744 3745 /** 3746 * A listener to call {@link InputMethodManager#updateCursorAnchorInfo(View, CursorAnchorInfo)} 3747 * while the input method is requesting the cursor/anchor position. Does nothing as long as 3748 * {@link InputMethodManager#isWatchingCursor(View)} returns false. 3749 */ 3750 private final class CursorAnchorInfoNotifier implements TextViewPositionListener { 3751 final CursorAnchorInfo.Builder mSelectionInfoBuilder = new CursorAnchorInfo.Builder(); 3752 final int[] mTmpIntOffset = new int[2]; 3753 final Matrix mViewToScreenMatrix = new Matrix(); 3754 3755 @Override 3756 public void updatePosition(int parentPositionX, int parentPositionY, 3757 boolean parentPositionChanged, boolean parentScrolled) { 3758 final InputMethodState ims = mInputMethodState; 3759 if (ims == null || ims.mBatchEditNesting > 0) { 3760 return; 3761 } 3762 final InputMethodManager imm = InputMethodManager.peekInstance(); 3763 if (null == imm) { 3764 return; 3765 } 3766 if (!imm.isActive(mTextView)) { 3767 return; 3768 } 3769 // Skip if the IME has not requested the cursor/anchor position. 3770 if (!imm.isCursorAnchorInfoEnabled()) { 3771 return; 3772 } 3773 Layout layout = mTextView.getLayout(); 3774 if (layout == null) { 3775 return; 3776 } 3777 3778 final CursorAnchorInfo.Builder builder = mSelectionInfoBuilder; 3779 builder.reset(); 3780 3781 final int selectionStart = mTextView.getSelectionStart(); 3782 builder.setSelectionRange(selectionStart, mTextView.getSelectionEnd()); 3783 3784 // Construct transformation matrix from view local coordinates to screen coordinates. 3785 mViewToScreenMatrix.set(mTextView.getMatrix()); 3786 mTextView.getLocationOnScreen(mTmpIntOffset); 3787 mViewToScreenMatrix.postTranslate(mTmpIntOffset[0], mTmpIntOffset[1]); 3788 builder.setMatrix(mViewToScreenMatrix); 3789 3790 final float viewportToContentHorizontalOffset = 3791 mTextView.viewportToContentHorizontalOffset(); 3792 final float viewportToContentVerticalOffset = 3793 mTextView.viewportToContentVerticalOffset(); 3794 3795 final CharSequence text = mTextView.getText(); 3796 if (text instanceof Spannable) { 3797 final Spannable sp = (Spannable) text; 3798 int composingTextStart = EditableInputConnection.getComposingSpanStart(sp); 3799 int composingTextEnd = EditableInputConnection.getComposingSpanEnd(sp); 3800 if (composingTextEnd < composingTextStart) { 3801 final int temp = composingTextEnd; 3802 composingTextEnd = composingTextStart; 3803 composingTextStart = temp; 3804 } 3805 final boolean hasComposingText = 3806 (0 <= composingTextStart) && (composingTextStart < composingTextEnd); 3807 if (hasComposingText) { 3808 final CharSequence composingText = text.subSequence(composingTextStart, 3809 composingTextEnd); 3810 builder.setComposingText(composingTextStart, composingText); 3811 3812 final int minLine = layout.getLineForOffset(composingTextStart); 3813 final int maxLine = layout.getLineForOffset(composingTextEnd - 1); 3814 for (int line = minLine; line <= maxLine; ++line) { 3815 final int lineStart = layout.getLineStart(line); 3816 final int lineEnd = layout.getLineEnd(line); 3817 final int offsetStart = Math.max(lineStart, composingTextStart); 3818 final int offsetEnd = Math.min(lineEnd, composingTextEnd); 3819 final boolean ltrLine = 3820 layout.getParagraphDirection(line) == Layout.DIR_LEFT_TO_RIGHT; 3821 final float[] widths = new float[offsetEnd - offsetStart]; 3822 layout.getPaint().getTextWidths(text, offsetStart, offsetEnd, widths); 3823 final float top = layout.getLineTop(line); 3824 final float bottom = layout.getLineBottom(line); 3825 for (int offset = offsetStart; offset < offsetEnd; ++offset) { 3826 final float charWidth = widths[offset - offsetStart]; 3827 final boolean isRtl = layout.isRtlCharAt(offset); 3828 final float primary = layout.getPrimaryHorizontal(offset); 3829 final float secondary = layout.getSecondaryHorizontal(offset); 3830 // TODO: This doesn't work perfectly for text with custom styles and 3831 // TAB chars. 3832 final float left; 3833 final float right; 3834 if (ltrLine) { 3835 if (isRtl) { 3836 left = secondary - charWidth; 3837 right = secondary; 3838 } else { 3839 left = primary; 3840 right = primary + charWidth; 3841 } 3842 } else { 3843 if (!isRtl) { 3844 left = secondary; 3845 right = secondary + charWidth; 3846 } else { 3847 left = primary - charWidth; 3848 right = primary; 3849 } 3850 } 3851 // TODO: Check top-right and bottom-left as well. 3852 final float localLeft = left + viewportToContentHorizontalOffset; 3853 final float localRight = right + viewportToContentHorizontalOffset; 3854 final float localTop = top + viewportToContentVerticalOffset; 3855 final float localBottom = bottom + viewportToContentVerticalOffset; 3856 final boolean isTopLeftVisible = isPositionVisible(localLeft, localTop); 3857 final boolean isBottomRightVisible = 3858 isPositionVisible(localRight, localBottom); 3859 int characterBoundsFlags = 0; 3860 if (isTopLeftVisible || isBottomRightVisible) { 3861 characterBoundsFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; 3862 } 3863 if (!isTopLeftVisible || !isBottomRightVisible) { 3864 characterBoundsFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; 3865 } 3866 if (isRtl) { 3867 characterBoundsFlags |= CursorAnchorInfo.FLAG_IS_RTL; 3868 } 3869 // Here offset is the index in Java chars. 3870 builder.addCharacterBounds(offset, localLeft, localTop, localRight, 3871 localBottom, characterBoundsFlags); 3872 } 3873 } 3874 } 3875 } 3876 3877 // Treat selectionStart as the insertion point. 3878 if (0 <= selectionStart) { 3879 final int offset = selectionStart; 3880 final int line = layout.getLineForOffset(offset); 3881 final float insertionMarkerX = layout.getPrimaryHorizontal(offset) 3882 + viewportToContentHorizontalOffset; 3883 final float insertionMarkerTop = layout.getLineTop(line) 3884 + viewportToContentVerticalOffset; 3885 final float insertionMarkerBaseline = layout.getLineBaseline(line) 3886 + viewportToContentVerticalOffset; 3887 final float insertionMarkerBottom = layout.getLineBottom(line) 3888 + viewportToContentVerticalOffset; 3889 final boolean isTopVisible = 3890 isPositionVisible(insertionMarkerX, insertionMarkerTop); 3891 final boolean isBottomVisible = 3892 isPositionVisible(insertionMarkerX, insertionMarkerBottom); 3893 int insertionMarkerFlags = 0; 3894 if (isTopVisible || isBottomVisible) { 3895 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; 3896 } 3897 if (!isTopVisible || !isBottomVisible) { 3898 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; 3899 } 3900 if (layout.isRtlCharAt(offset)) { 3901 insertionMarkerFlags |= CursorAnchorInfo.FLAG_IS_RTL; 3902 } 3903 builder.setInsertionMarkerLocation(insertionMarkerX, insertionMarkerTop, 3904 insertionMarkerBaseline, insertionMarkerBottom, insertionMarkerFlags); 3905 } 3906 3907 imm.updateCursorAnchorInfo(mTextView, builder.build()); 3908 } 3909 } 3910 3911 @VisibleForTesting 3912 public abstract class HandleView extends View implements TextViewPositionListener { 3913 protected Drawable mDrawable; 3914 protected Drawable mDrawableLtr; 3915 protected Drawable mDrawableRtl; 3916 private final PopupWindow mContainer; 3917 // Position with respect to the parent TextView 3918 private int mPositionX, mPositionY; 3919 private boolean mIsDragging; 3920 // Offset from touch position to mPosition 3921 private float mTouchToWindowOffsetX, mTouchToWindowOffsetY; 3922 protected int mHotspotX; 3923 protected int mHorizontalGravity; 3924 // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up 3925 private float mTouchOffsetY; 3926 // Where the touch position should be on the handle to ensure a maximum cursor visibility 3927 private float mIdealVerticalOffset; 3928 // Parent's (TextView) previous position in window 3929 private int mLastParentX, mLastParentY; 3930 // Previous text character offset 3931 protected int mPreviousOffset = -1; 3932 // Previous text character offset 3933 private boolean mPositionHasChanged = true; 3934 // Minimum touch target size for handles 3935 private int mMinSize; 3936 // Indicates the line of text that the handle is on. 3937 protected int mPrevLine = UNSET_LINE; 3938 // Indicates the line of text that the user was touching. This can differ from mPrevLine 3939 // when selecting text when the handles jump to the end / start of words which may be on 3940 // a different line. 3941 protected int mPreviousLineTouched = UNSET_LINE; 3942 3943 private HandleView(Drawable drawableLtr, Drawable drawableRtl, final int id) { 3944 super(mTextView.getContext()); 3945 setId(id); 3946 mContainer = new PopupWindow(mTextView.getContext(), null, 3947 com.android.internal.R.attr.textSelectHandleWindowStyle); 3948 mContainer.setSplitTouchEnabled(true); 3949 mContainer.setClippingEnabled(false); 3950 mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 3951 mContainer.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 3952 mContainer.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 3953 mContainer.setContentView(this); 3954 3955 mDrawableLtr = drawableLtr; 3956 mDrawableRtl = drawableRtl; 3957 mMinSize = mTextView.getContext().getResources().getDimensionPixelSize( 3958 com.android.internal.R.dimen.text_handle_min_size); 3959 3960 updateDrawable(); 3961 3962 final int handleHeight = getPreferredHeight(); 3963 mTouchOffsetY = -0.3f * handleHeight; 3964 mIdealVerticalOffset = 0.7f * handleHeight; 3965 } 3966 3967 public float getIdealVerticalOffset() { 3968 return mIdealVerticalOffset; 3969 } 3970 3971 protected void updateDrawable() { 3972 if (mIsDragging) { 3973 // Don't update drawable during dragging. 3974 return; 3975 } 3976 final int offset = getCurrentCursorOffset(); 3977 final boolean isRtlCharAtOffset = mTextView.getLayout().isRtlCharAt(offset); 3978 final Drawable oldDrawable = mDrawable; 3979 mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr; 3980 mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset); 3981 mHorizontalGravity = getHorizontalGravity(isRtlCharAtOffset); 3982 final Layout layout = mTextView.getLayout(); 3983 if (layout != null && oldDrawable != mDrawable && isShowing()) { 3984 // Update popup window position. 3985 mPositionX = getCursorHorizontalPosition(layout, offset) - mHotspotX - 3986 getHorizontalOffset() + getCursorOffset(); 3987 mPositionX += mTextView.viewportToContentHorizontalOffset(); 3988 mPositionHasChanged = true; 3989 updatePosition(mLastParentX, mLastParentY, false, false); 3990 postInvalidate(); 3991 } 3992 } 3993 3994 protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun); 3995 protected abstract int getHorizontalGravity(boolean isRtlRun); 3996 3997 // Touch-up filter: number of previous positions remembered 3998 private static final int HISTORY_SIZE = 5; 3999 private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150; 4000 private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350; 4001 private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; 4002 private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; 4003 private int mPreviousOffsetIndex = 0; 4004 private int mNumberPreviousOffsets = 0; 4005 4006 private void startTouchUpFilter(int offset) { 4007 mNumberPreviousOffsets = 0; 4008 addPositionToTouchUpFilter(offset); 4009 } 4010 4011 private void addPositionToTouchUpFilter(int offset) { 4012 mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; 4013 mPreviousOffsets[mPreviousOffsetIndex] = offset; 4014 mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); 4015 mNumberPreviousOffsets++; 4016 } 4017 4018 private void filterOnTouchUp() { 4019 final long now = SystemClock.uptimeMillis(); 4020 int i = 0; 4021 int index = mPreviousOffsetIndex; 4022 final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); 4023 while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) { 4024 i++; 4025 index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; 4026 } 4027 4028 if (i > 0 && i < iMax && 4029 (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) { 4030 positionAtCursorOffset(mPreviousOffsets[index], false); 4031 } 4032 } 4033 4034 public boolean offsetHasBeenChanged() { 4035 return mNumberPreviousOffsets > 1; 4036 } 4037 4038 @Override 4039 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4040 setMeasuredDimension(getPreferredWidth(), getPreferredHeight()); 4041 } 4042 4043 private int getPreferredWidth() { 4044 return Math.max(mDrawable.getIntrinsicWidth(), mMinSize); 4045 } 4046 4047 private int getPreferredHeight() { 4048 return Math.max(mDrawable.getIntrinsicHeight(), mMinSize); 4049 } 4050 4051 public void show() { 4052 if (isShowing()) return; 4053 4054 getPositionListener().addSubscriber(this, true /* local position may change */); 4055 4056 // Make sure the offset is always considered new, even when focusing at same position 4057 mPreviousOffset = -1; 4058 positionAtCursorOffset(getCurrentCursorOffset(), false); 4059 } 4060 4061 protected void dismiss() { 4062 mIsDragging = false; 4063 mContainer.dismiss(); 4064 onDetached(); 4065 } 4066 4067 public void hide() { 4068 dismiss(); 4069 4070 getPositionListener().removeSubscriber(this); 4071 } 4072 4073 public boolean isShowing() { 4074 return mContainer.isShowing(); 4075 } 4076 4077 private boolean isVisible() { 4078 // Always show a dragging handle. 4079 if (mIsDragging) { 4080 return true; 4081 } 4082 4083 if (mTextView.isInBatchEditMode()) { 4084 return false; 4085 } 4086 4087 return isPositionVisible(mPositionX + mHotspotX + getHorizontalOffset(), mPositionY); 4088 } 4089 4090 public abstract int getCurrentCursorOffset(); 4091 4092 protected abstract void updateSelection(int offset); 4093 4094 public abstract void updatePosition(float x, float y); 4095 4096 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 4097 // A HandleView relies on the layout, which may be nulled by external methods 4098 Layout layout = mTextView.getLayout(); 4099 if (layout == null) { 4100 // Will update controllers' state, hiding them and stopping selection mode if needed 4101 prepareCursorControllers(); 4102 return; 4103 } 4104 layout = getActiveLayout(); 4105 4106 boolean offsetChanged = offset != mPreviousOffset; 4107 if (offsetChanged || parentScrolled) { 4108 if (offsetChanged) { 4109 updateSelection(offset); 4110 addPositionToTouchUpFilter(offset); 4111 } 4112 final int line = layout.getLineForOffset(offset); 4113 mPrevLine = line; 4114 4115 mPositionX = getCursorHorizontalPosition(layout, offset) - mHotspotX - 4116 getHorizontalOffset() + getCursorOffset(); 4117 mPositionY = layout.getLineBottom(line); 4118 4119 // Take TextView's padding and scroll into account. 4120 mPositionX += mTextView.viewportToContentHorizontalOffset(); 4121 mPositionY += mTextView.viewportToContentVerticalOffset(); 4122 4123 mPreviousOffset = offset; 4124 mPositionHasChanged = true; 4125 } 4126 } 4127 4128 /** 4129 * Return the clamped horizontal position for the first cursor. 4130 * 4131 * @param layout Text layout. 4132 * @param offset Character offset for the cursor. 4133 * @return The clamped horizontal position for the cursor. 4134 */ 4135 int getCursorHorizontalPosition(Layout layout, int offset) { 4136 return (int) (layout.getPrimaryHorizontal(offset) - 0.5f); 4137 } 4138 4139 public void updatePosition(int parentPositionX, int parentPositionY, 4140 boolean parentPositionChanged, boolean parentScrolled) { 4141 positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled); 4142 if (parentPositionChanged || mPositionHasChanged) { 4143 if (mIsDragging) { 4144 // Update touchToWindow offset in case of parent scrolling while dragging 4145 if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) { 4146 mTouchToWindowOffsetX += parentPositionX - mLastParentX; 4147 mTouchToWindowOffsetY += parentPositionY - mLastParentY; 4148 mLastParentX = parentPositionX; 4149 mLastParentY = parentPositionY; 4150 } 4151 4152 onHandleMoved(); 4153 } 4154 4155 if (isVisible()) { 4156 final int positionX = parentPositionX + mPositionX; 4157 final int positionY = parentPositionY + mPositionY; 4158 if (isShowing()) { 4159 mContainer.update(positionX, positionY, -1, -1); 4160 } else { 4161 mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, 4162 positionX, positionY); 4163 } 4164 } else { 4165 if (isShowing()) { 4166 dismiss(); 4167 } 4168 } 4169 4170 mPositionHasChanged = false; 4171 } 4172 } 4173 4174 @Override 4175 protected void onDraw(Canvas c) { 4176 final int drawWidth = mDrawable.getIntrinsicWidth(); 4177 final int left = getHorizontalOffset(); 4178 4179 mDrawable.setBounds(left, 0, left + drawWidth, mDrawable.getIntrinsicHeight()); 4180 mDrawable.draw(c); 4181 } 4182 4183 private int getHorizontalOffset() { 4184 final int width = getPreferredWidth(); 4185 final int drawWidth = mDrawable.getIntrinsicWidth(); 4186 final int left; 4187 switch (mHorizontalGravity) { 4188 case Gravity.LEFT: 4189 left = 0; 4190 break; 4191 default: 4192 case Gravity.CENTER: 4193 left = (width - drawWidth) / 2; 4194 break; 4195 case Gravity.RIGHT: 4196 left = width - drawWidth; 4197 break; 4198 } 4199 return left; 4200 } 4201 4202 protected int getCursorOffset() { 4203 return 0; 4204 } 4205 4206 @Override 4207 public boolean onTouchEvent(MotionEvent ev) { 4208 updateFloatingToolbarVisibility(ev); 4209 4210 switch (ev.getActionMasked()) { 4211 case MotionEvent.ACTION_DOWN: { 4212 startTouchUpFilter(getCurrentCursorOffset()); 4213 mTouchToWindowOffsetX = ev.getRawX() - mPositionX; 4214 mTouchToWindowOffsetY = ev.getRawY() - mPositionY; 4215 4216 final PositionListener positionListener = getPositionListener(); 4217 mLastParentX = positionListener.getPositionX(); 4218 mLastParentY = positionListener.getPositionY(); 4219 mIsDragging = true; 4220 mPreviousLineTouched = UNSET_LINE; 4221 break; 4222 } 4223 4224 case MotionEvent.ACTION_MOVE: { 4225 final float rawX = ev.getRawX(); 4226 final float rawY = ev.getRawY(); 4227 4228 // Vertical hysteresis: vertical down movement tends to snap to ideal offset 4229 final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY; 4230 final float currentVerticalOffset = rawY - mPositionY - mLastParentY; 4231 float newVerticalOffset; 4232 if (previousVerticalOffset < mIdealVerticalOffset) { 4233 newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset); 4234 newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset); 4235 } else { 4236 newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset); 4237 newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset); 4238 } 4239 mTouchToWindowOffsetY = newVerticalOffset + mLastParentY; 4240 4241 final float newPosX = 4242 rawX - mTouchToWindowOffsetX + mHotspotX + getHorizontalOffset(); 4243 final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY; 4244 4245 updatePosition(newPosX, newPosY); 4246 break; 4247 } 4248 4249 case MotionEvent.ACTION_UP: 4250 filterOnTouchUp(); 4251 mIsDragging = false; 4252 updateDrawable(); 4253 break; 4254 4255 case MotionEvent.ACTION_CANCEL: 4256 mIsDragging = false; 4257 updateDrawable(); 4258 break; 4259 } 4260 return true; 4261 } 4262 4263 public boolean isDragging() { 4264 return mIsDragging; 4265 } 4266 4267 void onHandleMoved() {} 4268 4269 public void onDetached() {} 4270 } 4271 4272 /** 4273 * Returns the active layout (hint or text layout). Note that the text layout can be null. 4274 */ 4275 private Layout getActiveLayout() { 4276 Layout layout = mTextView.getLayout(); 4277 Layout hintLayout = mTextView.getHintLayout(); 4278 if (TextUtils.isEmpty(layout.getText()) && hintLayout != null && 4279 !TextUtils.isEmpty(hintLayout.getText())) { 4280 layout = hintLayout; 4281 } 4282 return layout; 4283 } 4284 4285 private class InsertionHandleView extends HandleView { 4286 private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000; 4287 private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds 4288 4289 // Used to detect taps on the insertion handle, which will affect the insertion action mode 4290 private float mDownPositionX, mDownPositionY; 4291 private Runnable mHider; 4292 4293 public InsertionHandleView(Drawable drawable) { 4294 super(drawable, drawable, com.android.internal.R.id.insertion_handle); 4295 } 4296 4297 @Override 4298 public void show() { 4299 super.show(); 4300 4301 final long durationSinceCutOrCopy = 4302 SystemClock.uptimeMillis() - TextView.sLastCutCopyOrTextChangedTime; 4303 4304 // Cancel the single tap delayed runnable. 4305 if (mInsertionActionModeRunnable != null 4306 && ((mTapState == TAP_STATE_DOUBLE_TAP) 4307 || (mTapState == TAP_STATE_TRIPLE_CLICK) 4308 || isCursorInsideEasyCorrectionSpan())) { 4309 mTextView.removeCallbacks(mInsertionActionModeRunnable); 4310 } 4311 4312 // Prepare and schedule the single tap runnable to run exactly after the double tap 4313 // timeout has passed. 4314 if ((mTapState != TAP_STATE_DOUBLE_TAP) && (mTapState != TAP_STATE_TRIPLE_CLICK) 4315 && !isCursorInsideEasyCorrectionSpan() 4316 && (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION)) { 4317 if (mTextActionMode == null) { 4318 if (mInsertionActionModeRunnable == null) { 4319 mInsertionActionModeRunnable = new Runnable() { 4320 @Override 4321 public void run() { 4322 startInsertionActionMode(); 4323 } 4324 }; 4325 } 4326 mTextView.postDelayed( 4327 mInsertionActionModeRunnable, 4328 ViewConfiguration.getDoubleTapTimeout() + 1); 4329 } 4330 4331 } 4332 4333 hideAfterDelay(); 4334 } 4335 4336 private void hideAfterDelay() { 4337 if (mHider == null) { 4338 mHider = new Runnable() { 4339 public void run() { 4340 hide(); 4341 } 4342 }; 4343 } else { 4344 removeHiderCallback(); 4345 } 4346 mTextView.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT); 4347 } 4348 4349 private void removeHiderCallback() { 4350 if (mHider != null) { 4351 mTextView.removeCallbacks(mHider); 4352 } 4353 } 4354 4355 @Override 4356 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 4357 return drawable.getIntrinsicWidth() / 2; 4358 } 4359 4360 @Override 4361 protected int getHorizontalGravity(boolean isRtlRun) { 4362 return Gravity.CENTER_HORIZONTAL; 4363 } 4364 4365 @Override 4366 protected int getCursorOffset() { 4367 int offset = super.getCursorOffset(); 4368 final Drawable cursor = mCursorCount > 0 ? mCursorDrawable[0] : null; 4369 if (cursor != null) { 4370 cursor.getPadding(mTempRect); 4371 offset += (cursor.getIntrinsicWidth() - mTempRect.left - mTempRect.right) / 2; 4372 } 4373 return offset; 4374 } 4375 4376 @Override 4377 int getCursorHorizontalPosition(Layout layout, int offset) { 4378 final Drawable drawable = mCursorCount > 0 ? mCursorDrawable[0] : null; 4379 if (drawable != null) { 4380 final float horizontal = layout.getPrimaryHorizontal(offset); 4381 return clampCursorHorizontalPosition(drawable, horizontal) + mTempRect.left; 4382 } 4383 return super.getCursorHorizontalPosition(layout, offset); 4384 } 4385 4386 @Override 4387 public boolean onTouchEvent(MotionEvent ev) { 4388 final boolean result = super.onTouchEvent(ev); 4389 4390 switch (ev.getActionMasked()) { 4391 case MotionEvent.ACTION_DOWN: 4392 mDownPositionX = ev.getRawX(); 4393 mDownPositionY = ev.getRawY(); 4394 break; 4395 4396 case MotionEvent.ACTION_UP: 4397 if (!offsetHasBeenChanged()) { 4398 final float deltaX = mDownPositionX - ev.getRawX(); 4399 final float deltaY = mDownPositionY - ev.getRawY(); 4400 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 4401 4402 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 4403 mTextView.getContext()); 4404 final int touchSlop = viewConfiguration.getScaledTouchSlop(); 4405 4406 if (distanceSquared < touchSlop * touchSlop) { 4407 // Tapping on the handle toggles the insertion action mode. 4408 if (mTextActionMode != null) { 4409 stopTextActionMode(); 4410 } else { 4411 startInsertionActionMode(); 4412 } 4413 } 4414 } else { 4415 if (mTextActionMode != null) { 4416 mTextActionMode.invalidateContentRect(); 4417 } 4418 } 4419 hideAfterDelay(); 4420 break; 4421 4422 case MotionEvent.ACTION_CANCEL: 4423 hideAfterDelay(); 4424 break; 4425 4426 default: 4427 break; 4428 } 4429 4430 return result; 4431 } 4432 4433 @Override 4434 public int getCurrentCursorOffset() { 4435 return mTextView.getSelectionStart(); 4436 } 4437 4438 @Override 4439 public void updateSelection(int offset) { 4440 Selection.setSelection((Spannable) mTextView.getText(), offset); 4441 } 4442 4443 @Override 4444 public void updatePosition(float x, float y) { 4445 Layout layout = mTextView.getLayout(); 4446 int offset; 4447 if (layout != null) { 4448 if (mPreviousLineTouched == UNSET_LINE) { 4449 mPreviousLineTouched = mTextView.getLineAtCoordinate(y); 4450 } 4451 int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); 4452 offset = mTextView.getOffsetAtCoordinate(currLine, x); 4453 mPreviousLineTouched = currLine; 4454 } else { 4455 offset = mTextView.getOffsetForPosition(x, y); 4456 } 4457 positionAtCursorOffset(offset, false); 4458 if (mTextActionMode != null) { 4459 mTextActionMode.invalidate(); 4460 } 4461 } 4462 4463 @Override 4464 void onHandleMoved() { 4465 super.onHandleMoved(); 4466 removeHiderCallback(); 4467 } 4468 4469 @Override 4470 public void onDetached() { 4471 super.onDetached(); 4472 removeHiderCallback(); 4473 } 4474 } 4475 4476 @Retention(RetentionPolicy.SOURCE) 4477 @IntDef({HANDLE_TYPE_SELECTION_START, HANDLE_TYPE_SELECTION_END}) 4478 public @interface HandleType {} 4479 public static final int HANDLE_TYPE_SELECTION_START = 0; 4480 public static final int HANDLE_TYPE_SELECTION_END = 1; 4481 4482 private class SelectionHandleView extends HandleView { 4483 // Indicates the handle type, selection start (HANDLE_TYPE_SELECTION_START) or selection 4484 // end (HANDLE_TYPE_SELECTION_END). 4485 @HandleType 4486 private final int mHandleType; 4487 // Indicates whether the cursor is making adjustments within a word. 4488 private boolean mInWord = false; 4489 // Difference between touch position and word boundary position. 4490 private float mTouchWordDelta; 4491 // X value of the previous updatePosition call. 4492 private float mPrevX; 4493 // Indicates if the handle has moved a boundary between LTR and RTL text. 4494 private boolean mLanguageDirectionChanged = false; 4495 // Distance from edge of horizontally scrolling text view 4496 // to use to switch to character mode. 4497 private final float mTextViewEdgeSlop; 4498 // Used to save text view location. 4499 private final int[] mTextViewLocation = new int[2]; 4500 4501 public SelectionHandleView(Drawable drawableLtr, Drawable drawableRtl, int id, 4502 @HandleType int handleType) { 4503 super(drawableLtr, drawableRtl, id); 4504 mHandleType = handleType; 4505 ViewConfiguration viewConfiguration = ViewConfiguration.get(mTextView.getContext()); 4506 mTextViewEdgeSlop = viewConfiguration.getScaledTouchSlop() * 4; 4507 } 4508 4509 private boolean isStartHandle() { 4510 return mHandleType == HANDLE_TYPE_SELECTION_START; 4511 } 4512 4513 @Override 4514 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 4515 if (isRtlRun == isStartHandle()) { 4516 return drawable.getIntrinsicWidth() / 4; 4517 } else { 4518 return (drawable.getIntrinsicWidth() * 3) / 4; 4519 } 4520 } 4521 4522 @Override 4523 protected int getHorizontalGravity(boolean isRtlRun) { 4524 return (isRtlRun == isStartHandle()) ? Gravity.LEFT : Gravity.RIGHT; 4525 } 4526 4527 @Override 4528 public int getCurrentCursorOffset() { 4529 return isStartHandle() ? mTextView.getSelectionStart() : mTextView.getSelectionEnd(); 4530 } 4531 4532 @Override 4533 protected void updateSelection(int offset) { 4534 if (isStartHandle()) { 4535 Selection.setSelection((Spannable) mTextView.getText(), offset, 4536 mTextView.getSelectionEnd()); 4537 } else { 4538 Selection.setSelection((Spannable) mTextView.getText(), 4539 mTextView.getSelectionStart(), offset); 4540 } 4541 updateDrawable(); 4542 if (mTextActionMode != null) { 4543 mTextActionMode.invalidate(); 4544 } 4545 } 4546 4547 @Override 4548 public void updatePosition(float x, float y) { 4549 final Layout layout = mTextView.getLayout(); 4550 if (layout == null) { 4551 // HandleView will deal appropriately in positionAtCursorOffset when 4552 // layout is null. 4553 positionAndAdjustForCrossingHandles(mTextView.getOffsetForPosition(x, y)); 4554 return; 4555 } 4556 4557 if (mPreviousLineTouched == UNSET_LINE) { 4558 mPreviousLineTouched = mTextView.getLineAtCoordinate(y); 4559 } 4560 4561 boolean positionCursor = false; 4562 final int anotherHandleOffset = 4563 isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); 4564 int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); 4565 int initialOffset = mTextView.getOffsetAtCoordinate(currLine, x); 4566 4567 if (isStartHandle() && initialOffset >= anotherHandleOffset 4568 || !isStartHandle() && initialOffset <= anotherHandleOffset) { 4569 // Handles have crossed, bound it to the first selected line and 4570 // adjust by word / char as normal. 4571 currLine = layout.getLineForOffset(anotherHandleOffset); 4572 initialOffset = mTextView.getOffsetAtCoordinate(currLine, x); 4573 } 4574 4575 int offset = initialOffset; 4576 final int wordEnd = getWordEnd(offset); 4577 final int wordStart = getWordStart(offset); 4578 4579 if (mPrevX == UNSET_X_VALUE) { 4580 mPrevX = x; 4581 } 4582 4583 final int currentOffset = getCurrentCursorOffset(); 4584 final boolean rtlAtCurrentOffset = layout.isRtlCharAt(currentOffset); 4585 final boolean atRtl = layout.isRtlCharAt(offset); 4586 final boolean isLvlBoundary = layout.isLevelBoundary(offset); 4587 4588 // We can't determine if the user is expanding or shrinking the selection if they're 4589 // on a bi-di boundary, so until they've moved past the boundary we'll just place 4590 // the cursor at the current position. 4591 if (isLvlBoundary || (rtlAtCurrentOffset && !atRtl) || (!rtlAtCurrentOffset && atRtl)) { 4592 // We're on a boundary or this is the first direction change -- just update 4593 // to the current position. 4594 mLanguageDirectionChanged = true; 4595 mTouchWordDelta = 0.0f; 4596 positionAndAdjustForCrossingHandles(offset); 4597 return; 4598 } else if (mLanguageDirectionChanged && !isLvlBoundary) { 4599 // We've just moved past the boundary so update the position. After this we can 4600 // figure out if the user is expanding or shrinking to go by word or character. 4601 positionAndAdjustForCrossingHandles(offset); 4602 mTouchWordDelta = 0.0f; 4603 mLanguageDirectionChanged = false; 4604 return; 4605 } 4606 4607 boolean isExpanding; 4608 final float xDiff = x - mPrevX; 4609 if (isStartHandle()) { 4610 isExpanding = currLine < mPreviousLineTouched; 4611 } else { 4612 isExpanding = currLine > mPreviousLineTouched; 4613 } 4614 if (atRtl == isStartHandle()) { 4615 isExpanding |= xDiff > 0; 4616 } else { 4617 isExpanding |= xDiff < 0; 4618 } 4619 4620 if (mTextView.getHorizontallyScrolling()) { 4621 if (positionNearEdgeOfScrollingView(x, atRtl) 4622 && ((isStartHandle() && mTextView.getScrollX() != 0) 4623 || (!isStartHandle() 4624 && mTextView.canScrollHorizontally(atRtl ? -1 : 1))) 4625 && ((isExpanding && ((isStartHandle() && offset < currentOffset) 4626 || (!isStartHandle() && offset > currentOffset))) 4627 || !isExpanding)) { 4628 // If we're expanding ensure that the offset is actually expanding compared to 4629 // the current offset, if the handle snapped to the word, the finger position 4630 // may be out of sync and we don't want the selection to jump back. 4631 mTouchWordDelta = 0.0f; 4632 final int nextOffset = (atRtl == isStartHandle()) 4633 ? layout.getOffsetToRightOf(mPreviousOffset) 4634 : layout.getOffsetToLeftOf(mPreviousOffset); 4635 positionAndAdjustForCrossingHandles(nextOffset); 4636 return; 4637 } 4638 } 4639 4640 if (isExpanding) { 4641 // User is increasing the selection. 4642 final boolean snapToWord = !mInWord 4643 || (isStartHandle() ? currLine < mPrevLine : currLine > mPrevLine); 4644 if (snapToWord) { 4645 // Sometimes words can be broken across lines (Chinese, hyphenation). 4646 // We still snap to the word boundary but we only use the letters on the 4647 // current line to determine if the user is far enough into the word to snap. 4648 int wordBoundary = isStartHandle() ? wordStart : wordEnd; 4649 if (layout != null && layout.getLineForOffset(wordBoundary) != currLine) { 4650 wordBoundary = isStartHandle() ? 4651 layout.getLineStart(currLine) : layout.getLineEnd(currLine); 4652 } 4653 final int offsetThresholdToSnap = isStartHandle() 4654 ? wordEnd - ((wordEnd - wordBoundary) / 2) 4655 : wordStart + ((wordBoundary - wordStart) / 2); 4656 if (isStartHandle() 4657 && (offset <= offsetThresholdToSnap || currLine < mPrevLine)) { 4658 // User is far enough into the word or on a different line so we expand by 4659 // word. 4660 offset = wordStart; 4661 } else if (!isStartHandle() 4662 && (offset >= offsetThresholdToSnap || currLine > mPrevLine)) { 4663 // User is far enough into the word or on a different line so we expand by 4664 // word. 4665 offset = wordEnd; 4666 } else { 4667 offset = mPreviousOffset; 4668 } 4669 } 4670 if (layout != null && (isStartHandle() && offset < initialOffset) 4671 || (!isStartHandle() && offset > initialOffset)) { 4672 final float adjustedX = layout.getPrimaryHorizontal(offset); 4673 mTouchWordDelta = 4674 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 4675 } else { 4676 mTouchWordDelta = 0.0f; 4677 } 4678 positionCursor = true; 4679 } else { 4680 final int adjustedOffset = 4681 mTextView.getOffsetAtCoordinate(currLine, x - mTouchWordDelta); 4682 final boolean shrinking = isStartHandle() 4683 ? adjustedOffset > mPreviousOffset || currLine > mPrevLine 4684 : adjustedOffset < mPreviousOffset || currLine < mPrevLine; 4685 if (shrinking) { 4686 // User is shrinking the selection. 4687 if (currLine != mPrevLine) { 4688 // We're on a different line, so we'll snap to word boundaries. 4689 offset = isStartHandle() ? wordStart : wordEnd; 4690 if (layout != null && (isStartHandle() && offset < initialOffset) 4691 || (!isStartHandle() && offset > initialOffset)) { 4692 final float adjustedX = layout.getPrimaryHorizontal(offset); 4693 mTouchWordDelta = 4694 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 4695 } else { 4696 mTouchWordDelta = 0.0f; 4697 } 4698 } else { 4699 offset = adjustedOffset; 4700 } 4701 positionCursor = true; 4702 } else if ((isStartHandle() && adjustedOffset < mPreviousOffset) 4703 || (!isStartHandle() && adjustedOffset > mPreviousOffset)) { 4704 // Handle has jumped to the word boundary, and the user is moving 4705 // their finger towards the handle, the delta should be updated. 4706 mTouchWordDelta = mTextView.convertToLocalHorizontalCoordinate(x) - 4707 layout.getPrimaryHorizontal(mPreviousOffset); 4708 } 4709 } 4710 4711 if (positionCursor) { 4712 mPreviousLineTouched = currLine; 4713 positionAndAdjustForCrossingHandles(offset); 4714 } 4715 mPrevX = x; 4716 } 4717 4718 /** 4719 * @param offset Cursor offset. Must be in [-1, length]. 4720 * @param parentScrolled If the parent has been scrolled or not. 4721 */ 4722 @Override 4723 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 4724 super.positionAtCursorOffset(offset, parentScrolled); 4725 mInWord = (offset != -1) && !getWordIteratorWithText().isBoundary(offset); 4726 } 4727 4728 @Override 4729 public boolean onTouchEvent(MotionEvent event) { 4730 boolean superResult = super.onTouchEvent(event); 4731 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 4732 // Reset the touch word offset and x value when the user 4733 // re-engages the handle. 4734 mTouchWordDelta = 0.0f; 4735 mPrevX = UNSET_X_VALUE; 4736 } 4737 return superResult; 4738 } 4739 4740 private void positionAndAdjustForCrossingHandles(int offset) { 4741 final int anotherHandleOffset = 4742 isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); 4743 if ((isStartHandle() && offset >= anotherHandleOffset) 4744 || (!isStartHandle() && offset <= anotherHandleOffset)) { 4745 // Handles can not cross and selection is at least one character. 4746 offset = getNextCursorOffset(anotherHandleOffset, !isStartHandle()); 4747 mTouchWordDelta = 0.0f; 4748 } 4749 positionAtCursorOffset(offset, false); 4750 } 4751 4752 private boolean positionNearEdgeOfScrollingView(float x, boolean atRtl) { 4753 mTextView.getLocationOnScreen(mTextViewLocation); 4754 boolean nearEdge; 4755 if (atRtl == isStartHandle()) { 4756 int rightEdge = mTextViewLocation[0] + mTextView.getWidth() 4757 - mTextView.getPaddingRight(); 4758 nearEdge = x > rightEdge - mTextViewEdgeSlop; 4759 } else { 4760 int leftEdge = mTextViewLocation[0] + mTextView.getPaddingLeft(); 4761 nearEdge = x < leftEdge + mTextViewEdgeSlop; 4762 } 4763 return nearEdge; 4764 } 4765 } 4766 4767 private int getCurrentLineAdjustedForSlop(Layout layout, int prevLine, float y) { 4768 final int trueLine = mTextView.getLineAtCoordinate(y); 4769 if (layout == null || prevLine > layout.getLineCount() 4770 || layout.getLineCount() <= 0 || prevLine < 0) { 4771 // Invalid parameters, just return whatever line is at y. 4772 return trueLine; 4773 } 4774 4775 if (Math.abs(trueLine - prevLine) >= 2) { 4776 // Only stick to lines if we're within a line of the previous selection. 4777 return trueLine; 4778 } 4779 4780 final float verticalOffset = mTextView.viewportToContentVerticalOffset(); 4781 final int lineCount = layout.getLineCount(); 4782 final float slop = mTextView.getLineHeight() * LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS; 4783 4784 final float firstLineTop = layout.getLineTop(0) + verticalOffset; 4785 final float prevLineTop = layout.getLineTop(prevLine) + verticalOffset; 4786 final float yTopBound = Math.max(prevLineTop - slop, firstLineTop + slop); 4787 4788 final float lastLineBottom = layout.getLineBottom(lineCount - 1) + verticalOffset; 4789 final float prevLineBottom = layout.getLineBottom(prevLine) + verticalOffset; 4790 final float yBottomBound = Math.min(prevLineBottom + slop, lastLineBottom - slop); 4791 4792 // Determine if we've moved lines based on y position and previous line. 4793 int currLine; 4794 if (y <= yTopBound) { 4795 currLine = Math.max(prevLine - 1, 0); 4796 } else if (y >= yBottomBound) { 4797 currLine = Math.min(prevLine + 1, lineCount - 1); 4798 } else { 4799 currLine = prevLine; 4800 } 4801 return currLine; 4802 } 4803 4804 /** 4805 * A CursorController instance can be used to control a cursor in the text. 4806 */ 4807 private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { 4808 /** 4809 * Makes the cursor controller visible on screen. 4810 * See also {@link #hide()}. 4811 */ 4812 public void show(); 4813 4814 /** 4815 * Hide the cursor controller from screen. 4816 * See also {@link #show()}. 4817 */ 4818 public void hide(); 4819 4820 /** 4821 * Called when the view is detached from window. Perform house keeping task, such as 4822 * stopping Runnable thread that would otherwise keep a reference on the context, thus 4823 * preventing the activity from being recycled. 4824 */ 4825 public void onDetached(); 4826 4827 public boolean isCursorBeingModified(); 4828 4829 public boolean isActive(); 4830 } 4831 4832 private class InsertionPointCursorController implements CursorController { 4833 private InsertionHandleView mHandle; 4834 4835 public void show() { 4836 getHandle().show(); 4837 4838 if (mSelectionModifierCursorController != null) { 4839 mSelectionModifierCursorController.hide(); 4840 } 4841 } 4842 4843 public void hide() { 4844 if (mHandle != null) { 4845 mHandle.hide(); 4846 } 4847 } 4848 4849 public void onTouchModeChanged(boolean isInTouchMode) { 4850 if (!isInTouchMode) { 4851 hide(); 4852 } 4853 } 4854 4855 private InsertionHandleView getHandle() { 4856 if (mSelectHandleCenter == null) { 4857 mSelectHandleCenter = mTextView.getContext().getDrawable( 4858 mTextView.mTextSelectHandleRes); 4859 } 4860 if (mHandle == null) { 4861 mHandle = new InsertionHandleView(mSelectHandleCenter); 4862 } 4863 return mHandle; 4864 } 4865 4866 @Override 4867 public void onDetached() { 4868 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 4869 observer.removeOnTouchModeChangeListener(this); 4870 4871 if (mHandle != null) mHandle.onDetached(); 4872 } 4873 4874 @Override 4875 public boolean isCursorBeingModified() { 4876 return mHandle != null && mHandle.isDragging(); 4877 } 4878 4879 @Override 4880 public boolean isActive() { 4881 return mHandle != null && mHandle.isShowing(); 4882 } 4883 } 4884 4885 class SelectionModifierCursorController implements CursorController { 4886 // The cursor controller handles, lazily created when shown. 4887 private SelectionHandleView mStartHandle; 4888 private SelectionHandleView mEndHandle; 4889 // The offsets of that last touch down event. Remembered to start selection there. 4890 private int mMinTouchOffset, mMaxTouchOffset; 4891 4892 private float mDownPositionX, mDownPositionY; 4893 private boolean mGestureStayedInTapRegion; 4894 4895 // Where the user first starts the drag motion. 4896 private int mStartOffset = -1; 4897 4898 private boolean mHaventMovedEnoughToStartDrag; 4899 // The line that a selection happened most recently with the drag accelerator. 4900 private int mLineSelectionIsOn = -1; 4901 // Whether the drag accelerator has selected past the initial line. 4902 private boolean mSwitchedLines = false; 4903 4904 // Indicates the drag accelerator mode that the user is currently using. 4905 private int mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; 4906 // Drag accelerator is inactive. 4907 private static final int DRAG_ACCELERATOR_MODE_INACTIVE = 0; 4908 // Character based selection by dragging. Only for mouse. 4909 private static final int DRAG_ACCELERATOR_MODE_CHARACTER = 1; 4910 // Word based selection by dragging. Enabled after long pressing or double tapping. 4911 private static final int DRAG_ACCELERATOR_MODE_WORD = 2; 4912 // Paragraph based selection by dragging. Enabled after mouse triple click. 4913 private static final int DRAG_ACCELERATOR_MODE_PARAGRAPH = 3; 4914 4915 SelectionModifierCursorController() { 4916 resetTouchOffsets(); 4917 } 4918 4919 public void show() { 4920 if (mTextView.isInBatchEditMode()) { 4921 return; 4922 } 4923 initDrawables(); 4924 initHandles(); 4925 } 4926 4927 private void initDrawables() { 4928 if (mSelectHandleLeft == null) { 4929 mSelectHandleLeft = mTextView.getContext().getDrawable( 4930 mTextView.mTextSelectHandleLeftRes); 4931 } 4932 if (mSelectHandleRight == null) { 4933 mSelectHandleRight = mTextView.getContext().getDrawable( 4934 mTextView.mTextSelectHandleRightRes); 4935 } 4936 } 4937 4938 private void initHandles() { 4939 // Lazy object creation has to be done before updatePosition() is called. 4940 if (mStartHandle == null) { 4941 mStartHandle = new SelectionHandleView(mSelectHandleLeft, mSelectHandleRight, 4942 com.android.internal.R.id.selection_start_handle, 4943 HANDLE_TYPE_SELECTION_START); 4944 } 4945 if (mEndHandle == null) { 4946 mEndHandle = new SelectionHandleView(mSelectHandleRight, mSelectHandleLeft, 4947 com.android.internal.R.id.selection_end_handle, 4948 HANDLE_TYPE_SELECTION_END); 4949 } 4950 4951 mStartHandle.show(); 4952 mEndHandle.show(); 4953 4954 hideInsertionPointCursorController(); 4955 } 4956 4957 public void hide() { 4958 if (mStartHandle != null) mStartHandle.hide(); 4959 if (mEndHandle != null) mEndHandle.hide(); 4960 } 4961 4962 public void enterDrag(int dragAcceleratorMode) { 4963 // Just need to init the handles / hide insertion cursor. 4964 show(); 4965 mDragAcceleratorMode = dragAcceleratorMode; 4966 // Start location of selection. 4967 mStartOffset = mTextView.getOffsetForPosition(mLastDownPositionX, 4968 mLastDownPositionY); 4969 mLineSelectionIsOn = mTextView.getLineAtCoordinate(mLastDownPositionY); 4970 // Don't show the handles until user has lifted finger. 4971 hide(); 4972 4973 // This stops scrolling parents from intercepting the touch event, allowing 4974 // the user to continue dragging across the screen to select text; TextView will 4975 // scroll as necessary. 4976 mTextView.getParent().requestDisallowInterceptTouchEvent(true); 4977 mTextView.cancelLongPress(); 4978 } 4979 4980 public void onTouchEvent(MotionEvent event) { 4981 // This is done even when the View does not have focus, so that long presses can start 4982 // selection and tap can move cursor from this tap position. 4983 final float eventX = event.getX(); 4984 final float eventY = event.getY(); 4985 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 4986 switch (event.getActionMasked()) { 4987 case MotionEvent.ACTION_DOWN: 4988 if (extractedTextModeWillBeStarted()) { 4989 // Prevent duplicating the selection handles until the mode starts. 4990 hide(); 4991 } else { 4992 // Remember finger down position, to be able to start selection from there. 4993 mMinTouchOffset = mMaxTouchOffset = mTextView.getOffsetForPosition( 4994 eventX, eventY); 4995 4996 // Double tap detection 4997 if (mGestureStayedInTapRegion) { 4998 if (mTapState == TAP_STATE_DOUBLE_TAP 4999 || mTapState == TAP_STATE_TRIPLE_CLICK) { 5000 final float deltaX = eventX - mDownPositionX; 5001 final float deltaY = eventY - mDownPositionY; 5002 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 5003 5004 ViewConfiguration viewConfiguration = ViewConfiguration.get( 5005 mTextView.getContext()); 5006 int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop(); 5007 boolean stayedInArea = 5008 distanceSquared < doubleTapSlop * doubleTapSlop; 5009 5010 if (stayedInArea && (isMouse || isPositionOnText(eventX, eventY))) { 5011 if (mTapState == TAP_STATE_DOUBLE_TAP) { 5012 selectCurrentWordAndStartDrag(); 5013 } else if (mTapState == TAP_STATE_TRIPLE_CLICK) { 5014 selectCurrentParagraphAndStartDrag(); 5015 } 5016 mDiscardNextActionUp = true; 5017 } 5018 } 5019 } 5020 5021 mDownPositionX = eventX; 5022 mDownPositionY = eventY; 5023 mGestureStayedInTapRegion = true; 5024 mHaventMovedEnoughToStartDrag = true; 5025 } 5026 break; 5027 5028 case MotionEvent.ACTION_POINTER_DOWN: 5029 case MotionEvent.ACTION_POINTER_UP: 5030 // Handle multi-point gestures. Keep min and max offset positions. 5031 // Only activated for devices that correctly handle multi-touch. 5032 if (mTextView.getContext().getPackageManager().hasSystemFeature( 5033 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { 5034 updateMinAndMaxOffsets(event); 5035 } 5036 break; 5037 5038 case MotionEvent.ACTION_MOVE: 5039 final ViewConfiguration viewConfig = ViewConfiguration.get( 5040 mTextView.getContext()); 5041 final int touchSlop = viewConfig.getScaledTouchSlop(); 5042 5043 if (mGestureStayedInTapRegion || mHaventMovedEnoughToStartDrag) { 5044 final float deltaX = eventX - mDownPositionX; 5045 final float deltaY = eventY - mDownPositionY; 5046 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 5047 5048 if (mGestureStayedInTapRegion) { 5049 int doubleTapTouchSlop = viewConfig.getScaledDoubleTapTouchSlop(); 5050 mGestureStayedInTapRegion = 5051 distanceSquared <= doubleTapTouchSlop * doubleTapTouchSlop; 5052 } 5053 if (mHaventMovedEnoughToStartDrag) { 5054 // We don't start dragging until the user has moved enough. 5055 mHaventMovedEnoughToStartDrag = 5056 distanceSquared <= touchSlop * touchSlop; 5057 } 5058 } 5059 5060 if (isMouse && !isDragAcceleratorActive()) { 5061 final int offset = mTextView.getOffsetForPosition(eventX, eventY); 5062 if (mTextView.hasSelection() 5063 && (!mHaventMovedEnoughToStartDrag || mStartOffset != offset) 5064 && offset >= mTextView.getSelectionStart() 5065 && offset <= mTextView.getSelectionEnd()) { 5066 startDragAndDrop(); 5067 break; 5068 } 5069 5070 if (mStartOffset != offset) { 5071 // Start character based drag accelerator. 5072 stopTextActionMode(); 5073 enterDrag(DRAG_ACCELERATOR_MODE_CHARACTER); 5074 mDiscardNextActionUp = true; 5075 mHaventMovedEnoughToStartDrag = false; 5076 } 5077 } 5078 5079 if (mStartHandle != null && mStartHandle.isShowing()) { 5080 // Don't do the drag if the handles are showing already. 5081 break; 5082 } 5083 5084 updateSelection(event); 5085 break; 5086 5087 case MotionEvent.ACTION_UP: 5088 if (!isDragAcceleratorActive()) { 5089 break; 5090 } 5091 updateSelection(event); 5092 5093 // No longer dragging to select text, let the parent intercept events. 5094 mTextView.getParent().requestDisallowInterceptTouchEvent(false); 5095 5096 int startOffset = mTextView.getSelectionStart(); 5097 int endOffset = mTextView.getSelectionEnd(); 5098 5099 // Since we don't let drag handles pass once they're visible, we need to 5100 // make sure the start / end locations are correct because the user *can* 5101 // switch directions during the initial drag. 5102 if (endOffset < startOffset) { 5103 int tmp = endOffset; 5104 endOffset = startOffset; 5105 startOffset = tmp; 5106 5107 // Also update the selection with the right offsets in this case. 5108 Selection.setSelection((Spannable) mTextView.getText(), 5109 startOffset, endOffset); 5110 } 5111 if (startOffset != endOffset) { 5112 startSelectionActionMode(); 5113 } 5114 5115 // No longer the first dragging motion, reset. 5116 resetDragAcceleratorState(); 5117 break; 5118 } 5119 } 5120 5121 private void updateSelection(MotionEvent event) { 5122 if (mTextView.getLayout() != null) { 5123 switch (mDragAcceleratorMode) { 5124 case DRAG_ACCELERATOR_MODE_CHARACTER: 5125 updateCharacterBasedSelection(event); 5126 break; 5127 case DRAG_ACCELERATOR_MODE_WORD: 5128 updateWordBasedSelection(event); 5129 break; 5130 case DRAG_ACCELERATOR_MODE_PARAGRAPH: 5131 updateParagraphBasedSelection(event); 5132 break; 5133 } 5134 } 5135 } 5136 5137 /** 5138 * If the TextView allows text selection, selects the current paragraph and starts a drag. 5139 * 5140 * @return true if the drag was started. 5141 */ 5142 private boolean selectCurrentParagraphAndStartDrag() { 5143 if (mInsertionActionModeRunnable != null) { 5144 mTextView.removeCallbacks(mInsertionActionModeRunnable); 5145 } 5146 stopTextActionMode(); 5147 if (!selectCurrentParagraph()) { 5148 return false; 5149 } 5150 enterDrag(SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_PARAGRAPH); 5151 return true; 5152 } 5153 5154 private void updateCharacterBasedSelection(MotionEvent event) { 5155 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 5156 Selection.setSelection((Spannable) mTextView.getText(), mStartOffset, offset); 5157 } 5158 5159 private void updateWordBasedSelection(MotionEvent event) { 5160 if (mHaventMovedEnoughToStartDrag) { 5161 return; 5162 } 5163 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 5164 final ViewConfiguration viewConfig = ViewConfiguration.get( 5165 mTextView.getContext()); 5166 final float eventX = event.getX(); 5167 final float eventY = event.getY(); 5168 final int currLine; 5169 if (isMouse) { 5170 // No need to offset the y coordinate for mouse input. 5171 currLine = mTextView.getLineAtCoordinate(eventY); 5172 } else { 5173 float y = eventY; 5174 if (mSwitchedLines) { 5175 // Offset the finger by the same vertical offset as the handles. 5176 // This improves visibility of the content being selected by 5177 // shifting the finger below the content, this is applied once 5178 // the user has switched lines. 5179 final int touchSlop = viewConfig.getScaledTouchSlop(); 5180 final float fingerOffset = (mStartHandle != null) 5181 ? mStartHandle.getIdealVerticalOffset() 5182 : touchSlop; 5183 y = eventY - fingerOffset; 5184 } 5185 5186 currLine = getCurrentLineAdjustedForSlop(mTextView.getLayout(), mLineSelectionIsOn, 5187 y); 5188 if (!mSwitchedLines && currLine != mLineSelectionIsOn) { 5189 // Break early here, we want to offset the finger position from 5190 // the selection highlight, once the user moved their finger 5191 // to a different line we should apply the offset and *not* switch 5192 // lines until recomputing the position with the finger offset. 5193 mSwitchedLines = true; 5194 return; 5195 } 5196 } 5197 5198 int startOffset; 5199 int offset = mTextView.getOffsetAtCoordinate(currLine, eventX); 5200 // Snap to word boundaries. 5201 if (mStartOffset < offset) { 5202 // Expanding with end handle. 5203 offset = getWordEnd(offset); 5204 startOffset = getWordStart(mStartOffset); 5205 } else { 5206 // Expanding with start handle. 5207 offset = getWordStart(offset); 5208 startOffset = getWordEnd(mStartOffset); 5209 } 5210 mLineSelectionIsOn = currLine; 5211 Selection.setSelection((Spannable) mTextView.getText(), 5212 startOffset, offset); 5213 } 5214 5215 private void updateParagraphBasedSelection(MotionEvent event) { 5216 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 5217 5218 final int start = Math.min(offset, mStartOffset); 5219 final int end = Math.max(offset, mStartOffset); 5220 final long paragraphsRange = getParagraphsRange(start, end); 5221 final int selectionStart = TextUtils.unpackRangeStartFromLong(paragraphsRange); 5222 final int selectionEnd = TextUtils.unpackRangeEndFromLong(paragraphsRange); 5223 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 5224 } 5225 5226 /** 5227 * @param event 5228 */ 5229 private void updateMinAndMaxOffsets(MotionEvent event) { 5230 int pointerCount = event.getPointerCount(); 5231 for (int index = 0; index < pointerCount; index++) { 5232 int offset = mTextView.getOffsetForPosition(event.getX(index), event.getY(index)); 5233 if (offset < mMinTouchOffset) mMinTouchOffset = offset; 5234 if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; 5235 } 5236 } 5237 5238 public int getMinTouchOffset() { 5239 return mMinTouchOffset; 5240 } 5241 5242 public int getMaxTouchOffset() { 5243 return mMaxTouchOffset; 5244 } 5245 5246 public void resetTouchOffsets() { 5247 mMinTouchOffset = mMaxTouchOffset = -1; 5248 resetDragAcceleratorState(); 5249 } 5250 5251 private void resetDragAcceleratorState() { 5252 mStartOffset = -1; 5253 mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; 5254 mSwitchedLines = false; 5255 final int selectionStart = mTextView.getSelectionStart(); 5256 final int selectionEnd = mTextView.getSelectionEnd(); 5257 if (selectionStart > selectionEnd) { 5258 Selection.setSelection((Spannable) mTextView.getText(), 5259 selectionEnd, selectionStart); 5260 } 5261 } 5262 5263 /** 5264 * @return true iff this controller is currently used to move the selection start. 5265 */ 5266 public boolean isSelectionStartDragged() { 5267 return mStartHandle != null && mStartHandle.isDragging(); 5268 } 5269 5270 @Override 5271 public boolean isCursorBeingModified() { 5272 return isDragAcceleratorActive() || isSelectionStartDragged() 5273 || (mEndHandle != null && mEndHandle.isDragging()); 5274 } 5275 5276 /** 5277 * @return true if the user is selecting text using the drag accelerator. 5278 */ 5279 public boolean isDragAcceleratorActive() { 5280 return mDragAcceleratorMode != DRAG_ACCELERATOR_MODE_INACTIVE; 5281 } 5282 5283 public void onTouchModeChanged(boolean isInTouchMode) { 5284 if (!isInTouchMode) { 5285 hide(); 5286 } 5287 } 5288 5289 @Override 5290 public void onDetached() { 5291 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 5292 observer.removeOnTouchModeChangeListener(this); 5293 5294 if (mStartHandle != null) mStartHandle.onDetached(); 5295 if (mEndHandle != null) mEndHandle.onDetached(); 5296 } 5297 5298 @Override 5299 public boolean isActive() { 5300 return mStartHandle != null && mStartHandle.isShowing(); 5301 } 5302 } 5303 5304 private class CorrectionHighlighter { 5305 private final Path mPath = new Path(); 5306 private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 5307 private int mStart, mEnd; 5308 private long mFadingStartTime; 5309 private RectF mTempRectF; 5310 private final static int FADE_OUT_DURATION = 400; 5311 5312 public CorrectionHighlighter() { 5313 mPaint.setCompatibilityScaling(mTextView.getResources().getCompatibilityInfo(). 5314 applicationScale); 5315 mPaint.setStyle(Paint.Style.FILL); 5316 } 5317 5318 public void highlight(CorrectionInfo info) { 5319 mStart = info.getOffset(); 5320 mEnd = mStart + info.getNewText().length(); 5321 mFadingStartTime = SystemClock.uptimeMillis(); 5322 5323 if (mStart < 0 || mEnd < 0) { 5324 stopAnimation(); 5325 } 5326 } 5327 5328 public void draw(Canvas canvas, int cursorOffsetVertical) { 5329 if (updatePath() && updatePaint()) { 5330 if (cursorOffsetVertical != 0) { 5331 canvas.translate(0, cursorOffsetVertical); 5332 } 5333 5334 canvas.drawPath(mPath, mPaint); 5335 5336 if (cursorOffsetVertical != 0) { 5337 canvas.translate(0, -cursorOffsetVertical); 5338 } 5339 invalidate(true); // TODO invalidate cursor region only 5340 } else { 5341 stopAnimation(); 5342 invalidate(false); // TODO invalidate cursor region only 5343 } 5344 } 5345 5346 private boolean updatePaint() { 5347 final long duration = SystemClock.uptimeMillis() - mFadingStartTime; 5348 if (duration > FADE_OUT_DURATION) return false; 5349 5350 final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; 5351 final int highlightColorAlpha = Color.alpha(mTextView.mHighlightColor); 5352 final int color = (mTextView.mHighlightColor & 0x00FFFFFF) + 5353 ((int) (highlightColorAlpha * coef) << 24); 5354 mPaint.setColor(color); 5355 return true; 5356 } 5357 5358 private boolean updatePath() { 5359 final Layout layout = mTextView.getLayout(); 5360 if (layout == null) return false; 5361 5362 // Update in case text is edited while the animation is run 5363 final int length = mTextView.getText().length(); 5364 int start = Math.min(length, mStart); 5365 int end = Math.min(length, mEnd); 5366 5367 mPath.reset(); 5368 layout.getSelectionPath(start, end, mPath); 5369 return true; 5370 } 5371 5372 private void invalidate(boolean delayed) { 5373 if (mTextView.getLayout() == null) return; 5374 5375 if (mTempRectF == null) mTempRectF = new RectF(); 5376 mPath.computeBounds(mTempRectF, false); 5377 5378 int left = mTextView.getCompoundPaddingLeft(); 5379 int top = mTextView.getExtendedPaddingTop() + mTextView.getVerticalOffset(true); 5380 5381 if (delayed) { 5382 mTextView.postInvalidateOnAnimation( 5383 left + (int) mTempRectF.left, top + (int) mTempRectF.top, 5384 left + (int) mTempRectF.right, top + (int) mTempRectF.bottom); 5385 } else { 5386 mTextView.postInvalidate((int) mTempRectF.left, (int) mTempRectF.top, 5387 (int) mTempRectF.right, (int) mTempRectF.bottom); 5388 } 5389 } 5390 5391 private void stopAnimation() { 5392 Editor.this.mCorrectionHighlighter = null; 5393 } 5394 } 5395 5396 private static class ErrorPopup extends PopupWindow { 5397 private boolean mAbove = false; 5398 private final TextView mView; 5399 private int mPopupInlineErrorBackgroundId = 0; 5400 private int mPopupInlineErrorAboveBackgroundId = 0; 5401 5402 ErrorPopup(TextView v, int width, int height) { 5403 super(v, width, height); 5404 mView = v; 5405 // Make sure the TextView has a background set as it will be used the first time it is 5406 // shown and positioned. Initialized with below background, which should have 5407 // dimensions identical to the above version for this to work (and is more likely). 5408 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 5409 com.android.internal.R.styleable.Theme_errorMessageBackground); 5410 mView.setBackgroundResource(mPopupInlineErrorBackgroundId); 5411 } 5412 5413 void fixDirection(boolean above) { 5414 mAbove = above; 5415 5416 if (above) { 5417 mPopupInlineErrorAboveBackgroundId = 5418 getResourceId(mPopupInlineErrorAboveBackgroundId, 5419 com.android.internal.R.styleable.Theme_errorMessageAboveBackground); 5420 } else { 5421 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 5422 com.android.internal.R.styleable.Theme_errorMessageBackground); 5423 } 5424 5425 mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId : 5426 mPopupInlineErrorBackgroundId); 5427 } 5428 5429 private int getResourceId(int currentId, int index) { 5430 if (currentId == 0) { 5431 TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( 5432 R.styleable.Theme); 5433 currentId = styledAttributes.getResourceId(index, 0); 5434 styledAttributes.recycle(); 5435 } 5436 return currentId; 5437 } 5438 5439 @Override 5440 public void update(int x, int y, int w, int h, boolean force) { 5441 super.update(x, y, w, h, force); 5442 5443 boolean above = isAboveAnchor(); 5444 if (above != mAbove) { 5445 fixDirection(above); 5446 } 5447 } 5448 } 5449 5450 static class InputContentType { 5451 int imeOptions = EditorInfo.IME_NULL; 5452 String privateImeOptions; 5453 CharSequence imeActionLabel; 5454 int imeActionId; 5455 Bundle extras; 5456 OnEditorActionListener onEditorActionListener; 5457 boolean enterDown; 5458 LocaleList imeHintLocales; 5459 } 5460 5461 static class InputMethodState { 5462 ExtractedTextRequest mExtractedTextRequest; 5463 final ExtractedText mExtractedText = new ExtractedText(); 5464 int mBatchEditNesting; 5465 boolean mCursorChanged; 5466 boolean mSelectionModeChanged; 5467 boolean mContentChanged; 5468 int mChangedStart, mChangedEnd, mChangedDelta; 5469 } 5470 5471 /** 5472 * @return True iff (start, end) is a valid range within the text. 5473 */ 5474 private static boolean isValidRange(CharSequence text, int start, int end) { 5475 return 0 <= start && start <= end && end <= text.length(); 5476 } 5477 5478 @VisibleForTesting 5479 public SuggestionsPopupWindow getSuggestionsPopupWindowForTesting() { 5480 return mSuggestionsPopupWindow; 5481 } 5482 5483 /** 5484 * An InputFilter that monitors text input to maintain undo history. It does not modify the 5485 * text being typed (and hence always returns null from the filter() method). 5486 */ 5487 public static class UndoInputFilter implements InputFilter { 5488 private final Editor mEditor; 5489 5490 // Whether the current filter pass is directly caused by an end-user text edit. 5491 private boolean mIsUserEdit; 5492 5493 // Whether the text field is handling an IME composition. Must be parceled in case the user 5494 // rotates the screen during composition. 5495 private boolean mHasComposition; 5496 5497 public UndoInputFilter(Editor editor) { 5498 mEditor = editor; 5499 } 5500 5501 public void saveInstanceState(Parcel parcel) { 5502 parcel.writeInt(mIsUserEdit ? 1 : 0); 5503 parcel.writeInt(mHasComposition ? 1 : 0); 5504 } 5505 5506 public void restoreInstanceState(Parcel parcel) { 5507 mIsUserEdit = parcel.readInt() != 0; 5508 mHasComposition = parcel.readInt() != 0; 5509 } 5510 5511 /** 5512 * Signals that a user-triggered edit is starting. 5513 */ 5514 public void beginBatchEdit() { 5515 if (DEBUG_UNDO) Log.d(TAG, "beginBatchEdit"); 5516 mIsUserEdit = true; 5517 } 5518 5519 public void endBatchEdit() { 5520 if (DEBUG_UNDO) Log.d(TAG, "endBatchEdit"); 5521 mIsUserEdit = false; 5522 } 5523 5524 @Override 5525 public CharSequence filter(CharSequence source, int start, int end, 5526 Spanned dest, int dstart, int dend) { 5527 if (DEBUG_UNDO) { 5528 Log.d(TAG, "filter: source=" + source + " (" + start + "-" + end + ") " + 5529 "dest=" + dest + " (" + dstart + "-" + dend + ")"); 5530 } 5531 5532 // Check to see if this edit should be tracked for undo. 5533 if (!canUndoEdit(source, start, end, dest, dstart, dend)) { 5534 return null; 5535 } 5536 5537 // Check for and handle IME composition edits. 5538 if (handleCompositionEdit(source, start, end, dstart)) { 5539 return null; 5540 } 5541 5542 // Handle keyboard edits. 5543 handleKeyboardEdit(source, start, end, dest, dstart, dend); 5544 return null; 5545 } 5546 5547 /** 5548 * Returns true iff the edit was handled, either because it should be ignored or because 5549 * this function created an undo operation for it. 5550 */ 5551 private boolean handleCompositionEdit(CharSequence source, int start, int end, int dstart) { 5552 // Ignore edits while the user is composing. 5553 if (isComposition(source)) { 5554 mHasComposition = true; 5555 return true; 5556 } 5557 final boolean hadComposition = mHasComposition; 5558 mHasComposition = false; 5559 5560 // Check for the transition out of the composing state. 5561 if (hadComposition) { 5562 // If there was no text the user canceled composition. Ignore the edit. 5563 if (start == end) { 5564 return true; 5565 } 5566 5567 // Otherwise the user inserted the composition. 5568 String newText = TextUtils.substring(source, start, end); 5569 EditOperation edit = new EditOperation(mEditor, "", dstart, newText); 5570 recordEdit(edit, false /* forceMerge */); 5571 return true; 5572 } 5573 5574 // This was neither a composition event nor a transition out of composing. 5575 return false; 5576 } 5577 5578 private void handleKeyboardEdit(CharSequence source, int start, int end, 5579 Spanned dest, int dstart, int dend) { 5580 // An application may install a TextWatcher to provide additional modifications after 5581 // the initial input filters run (e.g. a credit card formatter that adds spaces to a 5582 // string). This results in multiple filter() calls for what the user considers to be 5583 // a single operation. Always undo the whole set of changes in one step. 5584 final boolean forceMerge = isInTextWatcher(); 5585 5586 // Build a new operation with all the information from this edit. 5587 String newText = TextUtils.substring(source, start, end); 5588 String oldText = TextUtils.substring(dest, dstart, dend); 5589 EditOperation edit = new EditOperation(mEditor, oldText, dstart, newText); 5590 recordEdit(edit, forceMerge); 5591 } 5592 5593 /** 5594 * Fetches the last undo operation and checks to see if a new edit should be merged into it. 5595 * If forceMerge is true then the new edit is always merged. 5596 */ 5597 private void recordEdit(EditOperation edit, boolean forceMerge) { 5598 // Fetch the last edit operation and attempt to merge in the new edit. 5599 final UndoManager um = mEditor.mUndoManager; 5600 um.beginUpdate("Edit text"); 5601 EditOperation lastEdit = um.getLastOperation( 5602 EditOperation.class, mEditor.mUndoOwner, UndoManager.MERGE_MODE_UNIQUE); 5603 if (lastEdit == null) { 5604 // Add this as the first edit. 5605 if (DEBUG_UNDO) Log.d(TAG, "filter: adding first op " + edit); 5606 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5607 } else if (forceMerge) { 5608 // Forced merges take priority because they could be the result of a non-user-edit 5609 // change and this case should not create a new undo operation. 5610 if (DEBUG_UNDO) Log.d(TAG, "filter: force merge " + edit); 5611 lastEdit.forceMergeWith(edit); 5612 } else if (!mIsUserEdit) { 5613 // An application directly modified the Editable outside of a text edit. Treat this 5614 // as a new change and don't attempt to merge. 5615 if (DEBUG_UNDO) Log.d(TAG, "non-user edit, new op " + edit); 5616 um.commitState(mEditor.mUndoOwner); 5617 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5618 } else if (lastEdit.mergeWith(edit)) { 5619 // Merge succeeded, nothing else to do. 5620 if (DEBUG_UNDO) Log.d(TAG, "filter: merge succeeded, created " + lastEdit); 5621 } else { 5622 // Could not merge with the last edit, so commit the last edit and add this edit. 5623 if (DEBUG_UNDO) Log.d(TAG, "filter: merge failed, adding " + edit); 5624 um.commitState(mEditor.mUndoOwner); 5625 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5626 } 5627 um.endUpdate(); 5628 } 5629 5630 private boolean canUndoEdit(CharSequence source, int start, int end, 5631 Spanned dest, int dstart, int dend) { 5632 if (!mEditor.mAllowUndo) { 5633 if (DEBUG_UNDO) Log.d(TAG, "filter: undo is disabled"); 5634 return false; 5635 } 5636 5637 if (mEditor.mUndoManager.isInUndo()) { 5638 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping, currently performing undo/redo"); 5639 return false; 5640 } 5641 5642 // Text filters run before input operations are applied. However, some input operations 5643 // are invalid and will throw exceptions when applied. This is common in tests. Don't 5644 // attempt to undo invalid operations. 5645 if (!isValidRange(source, start, end) || !isValidRange(dest, dstart, dend)) { 5646 if (DEBUG_UNDO) Log.d(TAG, "filter: invalid op"); 5647 return false; 5648 } 5649 5650 // Earlier filters can rewrite input to be a no-op, for example due to a length limit 5651 // on an input field. Skip no-op changes. 5652 if (start == end && dstart == dend) { 5653 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping no-op"); 5654 return false; 5655 } 5656 5657 return true; 5658 } 5659 5660 private boolean isComposition(CharSequence source) { 5661 if (!(source instanceof Spannable)) { 5662 return false; 5663 } 5664 // This is a composition edit if the source has a non-zero-length composing span. 5665 Spannable text = (Spannable) source; 5666 int composeBegin = EditableInputConnection.getComposingSpanStart(text); 5667 int composeEnd = EditableInputConnection.getComposingSpanEnd(text); 5668 return composeBegin < composeEnd; 5669 } 5670 5671 private boolean isInTextWatcher() { 5672 CharSequence text = mEditor.mTextView.getText(); 5673 return (text instanceof SpannableStringBuilder) 5674 && ((SpannableStringBuilder) text).getTextWatcherDepth() > 0; 5675 } 5676 } 5677 5678 /** 5679 * An operation to undo a single "edit" to a text view. 5680 */ 5681 public static class EditOperation extends UndoOperation<Editor> { 5682 private static final int TYPE_INSERT = 0; 5683 private static final int TYPE_DELETE = 1; 5684 private static final int TYPE_REPLACE = 2; 5685 5686 private int mType; 5687 private String mOldText; 5688 private int mOldTextStart; 5689 private String mNewText; 5690 private int mNewTextStart; 5691 5692 private int mOldCursorPos; 5693 private int mNewCursorPos; 5694 5695 /** 5696 * Constructs an edit operation from a text input operation on editor that replaces the 5697 * oldText starting at dstart with newText. 5698 */ 5699 public EditOperation(Editor editor, String oldText, int dstart, String newText) { 5700 super(editor.mUndoOwner); 5701 mOldText = oldText; 5702 mNewText = newText; 5703 5704 // Determine the type of the edit and store where it occurred. Avoid storing 5705 // irrevelant data (e.g. mNewTextStart for a delete) because that makes the 5706 // merging logic more complex (e.g. merging deletes could lead to mNewTextStart being 5707 // outside the bounds of the final text). 5708 if (mNewText.length() > 0 && mOldText.length() == 0) { 5709 mType = TYPE_INSERT; 5710 mNewTextStart = dstart; 5711 } else if (mNewText.length() == 0 && mOldText.length() > 0) { 5712 mType = TYPE_DELETE; 5713 mOldTextStart = dstart; 5714 } else { 5715 mType = TYPE_REPLACE; 5716 mOldTextStart = mNewTextStart = dstart; 5717 } 5718 5719 // Store cursor data. 5720 mOldCursorPos = editor.mTextView.getSelectionStart(); 5721 mNewCursorPos = dstart + mNewText.length(); 5722 } 5723 5724 public EditOperation(Parcel src, ClassLoader loader) { 5725 super(src, loader); 5726 mType = src.readInt(); 5727 mOldText = src.readString(); 5728 mOldTextStart = src.readInt(); 5729 mNewText = src.readString(); 5730 mNewTextStart = src.readInt(); 5731 mOldCursorPos = src.readInt(); 5732 mNewCursorPos = src.readInt(); 5733 } 5734 5735 @Override 5736 public void writeToParcel(Parcel dest, int flags) { 5737 dest.writeInt(mType); 5738 dest.writeString(mOldText); 5739 dest.writeInt(mOldTextStart); 5740 dest.writeString(mNewText); 5741 dest.writeInt(mNewTextStart); 5742 dest.writeInt(mOldCursorPos); 5743 dest.writeInt(mNewCursorPos); 5744 } 5745 5746 private int getNewTextEnd() { 5747 return mNewTextStart + mNewText.length(); 5748 } 5749 5750 private int getOldTextEnd() { 5751 return mOldTextStart + mOldText.length(); 5752 } 5753 5754 @Override 5755 public void commit() { 5756 } 5757 5758 @Override 5759 public void undo() { 5760 if (DEBUG_UNDO) Log.d(TAG, "undo"); 5761 // Remove the new text and insert the old. 5762 Editor editor = getOwnerData(); 5763 Editable text = (Editable) editor.mTextView.getText(); 5764 modifyText(text, mNewTextStart, getNewTextEnd(), mOldText, mOldTextStart, 5765 mOldCursorPos); 5766 } 5767 5768 @Override 5769 public void redo() { 5770 if (DEBUG_UNDO) Log.d(TAG, "redo"); 5771 // Remove the old text and insert the new. 5772 Editor editor = getOwnerData(); 5773 Editable text = (Editable) editor.mTextView.getText(); 5774 modifyText(text, mOldTextStart, getOldTextEnd(), mNewText, mNewTextStart, 5775 mNewCursorPos); 5776 } 5777 5778 /** 5779 * Attempts to merge this existing operation with a new edit. 5780 * @param edit The new edit operation. 5781 * @return If the merge succeeded, returns true. Otherwise returns false and leaves this 5782 * object unchanged. 5783 */ 5784 private boolean mergeWith(EditOperation edit) { 5785 if (DEBUG_UNDO) { 5786 Log.d(TAG, "mergeWith old " + this); 5787 Log.d(TAG, "mergeWith new " + edit); 5788 } 5789 switch (mType) { 5790 case TYPE_INSERT: 5791 return mergeInsertWith(edit); 5792 case TYPE_DELETE: 5793 return mergeDeleteWith(edit); 5794 case TYPE_REPLACE: 5795 return mergeReplaceWith(edit); 5796 default: 5797 return false; 5798 } 5799 } 5800 5801 private boolean mergeInsertWith(EditOperation edit) { 5802 // Only merge continuous insertions. 5803 if (edit.mType != TYPE_INSERT) { 5804 return false; 5805 } 5806 // Only merge insertions that are contiguous. 5807 if (getNewTextEnd() != edit.mNewTextStart) { 5808 return false; 5809 } 5810 mNewText += edit.mNewText; 5811 mNewCursorPos = edit.mNewCursorPos; 5812 return true; 5813 } 5814 5815 // TODO: Support forward delete. 5816 private boolean mergeDeleteWith(EditOperation edit) { 5817 // Only merge continuous deletes. 5818 if (edit.mType != TYPE_DELETE) { 5819 return false; 5820 } 5821 // Only merge deletions that are contiguous. 5822 if (mOldTextStart != edit.getOldTextEnd()) { 5823 return false; 5824 } 5825 mOldTextStart = edit.mOldTextStart; 5826 mOldText = edit.mOldText + mOldText; 5827 mNewCursorPos = edit.mNewCursorPos; 5828 return true; 5829 } 5830 5831 private boolean mergeReplaceWith(EditOperation edit) { 5832 // Replacements can merge only with adjacent inserts. 5833 if (edit.mType != TYPE_INSERT || getNewTextEnd() != edit.mNewTextStart) { 5834 return false; 5835 } 5836 mOldText += edit.mOldText; 5837 mNewText += edit.mNewText; 5838 mNewCursorPos = edit.mNewCursorPos; 5839 return true; 5840 } 5841 5842 /** 5843 * Forcibly creates a single merged edit operation by simulating the entire text 5844 * contents being replaced. 5845 */ 5846 public void forceMergeWith(EditOperation edit) { 5847 if (DEBUG_UNDO) Log.d(TAG, "forceMerge"); 5848 Editor editor = getOwnerData(); 5849 5850 // Copy the text of the current field. 5851 // NOTE: Using StringBuilder instead of SpannableStringBuilder would be somewhat faster, 5852 // but would require two parallel implementations of modifyText() because Editable and 5853 // StringBuilder do not share an interface for replace/delete/insert. 5854 Editable editable = (Editable) editor.mTextView.getText(); 5855 Editable originalText = new SpannableStringBuilder(editable.toString()); 5856 5857 // Roll back the last operation. 5858 modifyText(originalText, mNewTextStart, getNewTextEnd(), mOldText, mOldTextStart, 5859 mOldCursorPos); 5860 5861 // Clone the text again and apply the new operation. 5862 Editable finalText = new SpannableStringBuilder(editable.toString()); 5863 modifyText(finalText, edit.mOldTextStart, edit.getOldTextEnd(), edit.mNewText, 5864 edit.mNewTextStart, edit.mNewCursorPos); 5865 5866 // Convert this operation into a non-mergeable replacement of the entire string. 5867 mType = TYPE_REPLACE; 5868 mNewText = finalText.toString(); 5869 mNewTextStart = 0; 5870 mOldText = originalText.toString(); 5871 mOldTextStart = 0; 5872 mNewCursorPos = edit.mNewCursorPos; 5873 // mOldCursorPos is unchanged. 5874 } 5875 5876 private static void modifyText(Editable text, int deleteFrom, int deleteTo, 5877 CharSequence newText, int newTextInsertAt, int newCursorPos) { 5878 // Apply the edit if it is still valid. 5879 if (isValidRange(text, deleteFrom, deleteTo) && 5880 newTextInsertAt <= text.length() - (deleteTo - deleteFrom)) { 5881 if (deleteFrom != deleteTo) { 5882 text.delete(deleteFrom, deleteTo); 5883 } 5884 if (newText.length() != 0) { 5885 text.insert(newTextInsertAt, newText); 5886 } 5887 } 5888 // Restore the cursor position. If there wasn't an old cursor (newCursorPos == -1) then 5889 // don't explicitly set it and rely on SpannableStringBuilder to position it. 5890 // TODO: Select all the text that was undone. 5891 if (0 <= newCursorPos && newCursorPos <= text.length()) { 5892 Selection.setSelection(text, newCursorPos); 5893 } 5894 } 5895 5896 private String getTypeString() { 5897 switch (mType) { 5898 case TYPE_INSERT: 5899 return "insert"; 5900 case TYPE_DELETE: 5901 return "delete"; 5902 case TYPE_REPLACE: 5903 return "replace"; 5904 default: 5905 return ""; 5906 } 5907 } 5908 5909 @Override 5910 public String toString() { 5911 return "[mType=" + getTypeString() + ", " + 5912 "mOldText=" + mOldText + ", " + 5913 "mOldTextStart=" + mOldTextStart + ", " + 5914 "mNewText=" + mNewText + ", " + 5915 "mNewTextStart=" + mNewTextStart + ", " + 5916 "mOldCursorPos=" + mOldCursorPos + ", " + 5917 "mNewCursorPos=" + mNewCursorPos + "]"; 5918 } 5919 5920 public static final Parcelable.ClassLoaderCreator<EditOperation> CREATOR 5921 = new Parcelable.ClassLoaderCreator<EditOperation>() { 5922 @Override 5923 public EditOperation createFromParcel(Parcel in) { 5924 return new EditOperation(in, null); 5925 } 5926 5927 @Override 5928 public EditOperation createFromParcel(Parcel in, ClassLoader loader) { 5929 return new EditOperation(in, loader); 5930 } 5931 5932 @Override 5933 public EditOperation[] newArray(int size) { 5934 return new EditOperation[size]; 5935 } 5936 }; 5937 } 5938 5939 /** 5940 * A helper for enabling and handling "PROCESS_TEXT" menu actions. 5941 * These allow external applications to plug into currently selected text. 5942 */ 5943 static final class ProcessTextIntentActionsHandler { 5944 5945 private final Editor mEditor; 5946 private final TextView mTextView; 5947 private final PackageManager mPackageManager; 5948 private final SparseArray<Intent> mAccessibilityIntents = new SparseArray<Intent>(); 5949 private final SparseArray<AccessibilityNodeInfo.AccessibilityAction> mAccessibilityActions 5950 = new SparseArray<AccessibilityNodeInfo.AccessibilityAction>(); 5951 5952 private ProcessTextIntentActionsHandler(Editor editor) { 5953 mEditor = Preconditions.checkNotNull(editor); 5954 mTextView = Preconditions.checkNotNull(mEditor.mTextView); 5955 mPackageManager = Preconditions.checkNotNull( 5956 mTextView.getContext().getPackageManager()); 5957 } 5958 5959 /** 5960 * Adds "PROCESS_TEXT" menu items to the specified menu. 5961 */ 5962 public void onInitializeMenu(Menu menu) { 5963 int i = 0; 5964 for (ResolveInfo resolveInfo : getSupportedActivities()) { 5965 menu.add(Menu.NONE, Menu.NONE, 5966 Editor.MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START + i++, 5967 getLabel(resolveInfo)) 5968 .setIntent(createProcessTextIntentForResolveInfo(resolveInfo)) 5969 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 5970 } 5971 } 5972 5973 /** 5974 * Performs a "PROCESS_TEXT" action if there is one associated with the specified 5975 * menu item. 5976 * 5977 * @return True if the action was performed, false otherwise. 5978 */ 5979 public boolean performMenuItemAction(MenuItem item) { 5980 return fireIntent(item.getIntent()); 5981 } 5982 5983 /** 5984 * Initializes and caches "PROCESS_TEXT" accessibility actions. 5985 */ 5986 public void initializeAccessibilityActions() { 5987 mAccessibilityIntents.clear(); 5988 mAccessibilityActions.clear(); 5989 int i = 0; 5990 for (ResolveInfo resolveInfo : getSupportedActivities()) { 5991 int actionId = TextView.ACCESSIBILITY_ACTION_PROCESS_TEXT_START_ID + i++; 5992 mAccessibilityActions.put( 5993 actionId, 5994 new AccessibilityNodeInfo.AccessibilityAction( 5995 actionId, getLabel(resolveInfo))); 5996 mAccessibilityIntents.put( 5997 actionId, createProcessTextIntentForResolveInfo(resolveInfo)); 5998 } 5999 } 6000 6001 /** 6002 * Adds "PROCESS_TEXT" accessibility actions to the specified accessibility node info. 6003 * NOTE: This needs a prior call to {@link #initializeAccessibilityActions()} to make the 6004 * latest accessibility actions available for this call. 6005 */ 6006 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo nodeInfo) { 6007 for (int i = 0; i < mAccessibilityActions.size(); i++) { 6008 nodeInfo.addAction(mAccessibilityActions.valueAt(i)); 6009 } 6010 } 6011 6012 /** 6013 * Performs a "PROCESS_TEXT" action if there is one associated with the specified 6014 * accessibility action id. 6015 * 6016 * @return True if the action was performed, false otherwise. 6017 */ 6018 public boolean performAccessibilityAction(int actionId) { 6019 return fireIntent(mAccessibilityIntents.get(actionId)); 6020 } 6021 6022 private boolean fireIntent(Intent intent) { 6023 if (intent != null && Intent.ACTION_PROCESS_TEXT.equals(intent.getAction())) { 6024 intent.putExtra(Intent.EXTRA_PROCESS_TEXT, mTextView.getSelectedText()); 6025 mEditor.mPreserveSelection = true; 6026 mTextView.startActivityForResult(intent, TextView.PROCESS_TEXT_REQUEST_CODE); 6027 return true; 6028 } 6029 return false; 6030 } 6031 6032 private List<ResolveInfo> getSupportedActivities() { 6033 PackageManager packageManager = mTextView.getContext().getPackageManager(); 6034 return packageManager.queryIntentActivities(createProcessTextIntent(), 0); 6035 } 6036 6037 private Intent createProcessTextIntentForResolveInfo(ResolveInfo info) { 6038 return createProcessTextIntent() 6039 .putExtra(Intent.EXTRA_PROCESS_TEXT_READONLY, !mTextView.isTextEditable()) 6040 .setClassName(info.activityInfo.packageName, info.activityInfo.name); 6041 } 6042 6043 private Intent createProcessTextIntent() { 6044 return new Intent() 6045 .setAction(Intent.ACTION_PROCESS_TEXT) 6046 .setType("text/plain"); 6047 } 6048 6049 private CharSequence getLabel(ResolveInfo resolveInfo) { 6050 return resolveInfo.loadLabel(mPackageManager); 6051 } 6052 } 6053} 6054