Editor.java revision e0ac5ac6f0bcf58362af1ed723fa2a7d68ddd25d
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 and getWordIteratorWithText with the 925 // proper new locale 926 mWordIterator = null; 927 mWordIteratorWithText = null; 928 } 929 930 /** 931 * @hide 932 */ 933 public WordIterator getWordIterator() { 934 if (mWordIterator == null) { 935 mWordIterator = new WordIterator(mTextView.getTextServicesLocale()); 936 } 937 return mWordIterator; 938 } 939 940 private WordIterator getWordIteratorWithText() { 941 if (mWordIteratorWithText == null) { 942 mWordIteratorWithText = new WordIterator(mTextView.getTextServicesLocale()); 943 mUpdateWordIteratorText = true; 944 } 945 if (mUpdateWordIteratorText) { 946 // FIXME - Shouldn't copy all of the text as only the area of the text relevant 947 // to the user's selection is needed. A possible solution would be to 948 // copy some number N of characters near the selection and then when the 949 // user approaches N then we'd do another copy of the next N characters. 950 CharSequence text = mTextView.getText(); 951 mWordIteratorWithText.setCharSequence(text, 0, text.length()); 952 mUpdateWordIteratorText = false; 953 } 954 return mWordIteratorWithText; 955 } 956 957 private int getNextCursorOffset(int offset, boolean findAfterGivenOffset) { 958 final Layout layout = mTextView.getLayout(); 959 if (layout == null) return offset; 960 return findAfterGivenOffset == layout.isRtlCharAt(offset) ? 961 layout.getOffsetToLeftOf(offset) : layout.getOffsetToRightOf(offset); 962 } 963 964 private long getCharClusterRange(int offset) { 965 final int textLength = mTextView.getText().length(); 966 if (offset < textLength) { 967 final int clusterEndOffset = getNextCursorOffset(offset, true); 968 return TextUtils.packRangeInLong( 969 getNextCursorOffset(clusterEndOffset, false), clusterEndOffset); 970 } 971 if (offset - 1 >= 0) { 972 final int clusterStartOffset = getNextCursorOffset(offset, false); 973 return TextUtils.packRangeInLong(clusterStartOffset, 974 getNextCursorOffset(clusterStartOffset, true)); 975 } 976 return TextUtils.packRangeInLong(offset, offset); 977 } 978 979 private boolean touchPositionIsInSelection() { 980 int selectionStart = mTextView.getSelectionStart(); 981 int selectionEnd = mTextView.getSelectionEnd(); 982 983 if (selectionStart == selectionEnd) { 984 return false; 985 } 986 987 if (selectionStart > selectionEnd) { 988 int tmp = selectionStart; 989 selectionStart = selectionEnd; 990 selectionEnd = tmp; 991 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 992 } 993 994 SelectionModifierCursorController selectionController = getSelectionController(); 995 int minOffset = selectionController.getMinTouchOffset(); 996 int maxOffset = selectionController.getMaxTouchOffset(); 997 998 return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); 999 } 1000 1001 private PositionListener getPositionListener() { 1002 if (mPositionListener == null) { 1003 mPositionListener = new PositionListener(); 1004 } 1005 return mPositionListener; 1006 } 1007 1008 private interface TextViewPositionListener { 1009 public void updatePosition(int parentPositionX, int parentPositionY, 1010 boolean parentPositionChanged, boolean parentScrolled); 1011 } 1012 1013 private boolean isPositionVisible(final float positionX, final float positionY) { 1014 synchronized (TEMP_POSITION) { 1015 final float[] position = TEMP_POSITION; 1016 position[0] = positionX; 1017 position[1] = positionY; 1018 View view = mTextView; 1019 1020 while (view != null) { 1021 if (view != mTextView) { 1022 // Local scroll is already taken into account in positionX/Y 1023 position[0] -= view.getScrollX(); 1024 position[1] -= view.getScrollY(); 1025 } 1026 1027 if (position[0] < 0 || position[1] < 0 || 1028 position[0] > view.getWidth() || position[1] > view.getHeight()) { 1029 return false; 1030 } 1031 1032 if (!view.getMatrix().isIdentity()) { 1033 view.getMatrix().mapPoints(position); 1034 } 1035 1036 position[0] += view.getLeft(); 1037 position[1] += view.getTop(); 1038 1039 final ViewParent parent = view.getParent(); 1040 if (parent instanceof View) { 1041 view = (View) parent; 1042 } else { 1043 // We've reached the ViewRoot, stop iterating 1044 view = null; 1045 } 1046 } 1047 } 1048 1049 // We've been able to walk up the view hierarchy and the position was never clipped 1050 return true; 1051 } 1052 1053 private boolean isOffsetVisible(int offset) { 1054 Layout layout = mTextView.getLayout(); 1055 if (layout == null) return false; 1056 1057 final int line = layout.getLineForOffset(offset); 1058 final int lineBottom = layout.getLineBottom(line); 1059 final int primaryHorizontal = (int) layout.getPrimaryHorizontal(offset); 1060 return isPositionVisible(primaryHorizontal + mTextView.viewportToContentHorizontalOffset(), 1061 lineBottom + mTextView.viewportToContentVerticalOffset()); 1062 } 1063 1064 /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed 1065 * in the view. Returns false when the position is in the empty space of left/right of text. 1066 */ 1067 private boolean isPositionOnText(float x, float y) { 1068 Layout layout = mTextView.getLayout(); 1069 if (layout == null) return false; 1070 1071 final int line = mTextView.getLineAtCoordinate(y); 1072 x = mTextView.convertToLocalHorizontalCoordinate(x); 1073 1074 if (x < layout.getLineLeft(line)) return false; 1075 if (x > layout.getLineRight(line)) return false; 1076 return true; 1077 } 1078 1079 private void startDragAndDrop() { 1080 final int start = mTextView.getSelectionStart(); 1081 final int end = mTextView.getSelectionEnd(); 1082 CharSequence selectedText = mTextView.getTransformedText(start, end); 1083 ClipData data = ClipData.newPlainText(null, selectedText); 1084 DragLocalState localState = new DragLocalState(mTextView, start, end); 1085 mTextView.startDragAndDrop(data, getTextThumbnailBuilder(start, end), localState, 1086 View.DRAG_FLAG_GLOBAL); 1087 stopTextActionMode(); 1088 if (hasSelectionController()) { 1089 getSelectionController().resetTouchOffsets(); 1090 } 1091 } 1092 1093 public boolean performLongClick(boolean handled) { 1094 // Long press in empty space moves cursor and starts the insertion action mode. 1095 if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) && 1096 mInsertionControllerEnabled) { 1097 final int offset = mTextView.getOffsetForPosition(mLastDownPositionX, 1098 mLastDownPositionY); 1099 Selection.setSelection((Spannable) mTextView.getText(), offset); 1100 getInsertionController().show(); 1101 mIsInsertionActionModeStartPending = true; 1102 handled = true; 1103 } 1104 1105 if (!handled && mTextActionMode != null) { 1106 if (touchPositionIsInSelection()) { 1107 startDragAndDrop(); 1108 } else { 1109 stopTextActionMode(); 1110 selectCurrentWordAndStartDrag(); 1111 } 1112 handled = true; 1113 } 1114 1115 // Start a new selection 1116 if (!handled) { 1117 handled = selectCurrentWordAndStartDrag(); 1118 } 1119 1120 return handled; 1121 } 1122 1123 private long getLastTouchOffsets() { 1124 SelectionModifierCursorController selectionController = getSelectionController(); 1125 final int minOffset = selectionController.getMinTouchOffset(); 1126 final int maxOffset = selectionController.getMaxTouchOffset(); 1127 return TextUtils.packRangeInLong(minOffset, maxOffset); 1128 } 1129 1130 void onFocusChanged(boolean focused, int direction) { 1131 mShowCursor = SystemClock.uptimeMillis(); 1132 ensureEndedBatchEdit(); 1133 1134 if (focused) { 1135 int selStart = mTextView.getSelectionStart(); 1136 int selEnd = mTextView.getSelectionEnd(); 1137 1138 // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection 1139 // mode for these, unless there was a specific selection already started. 1140 final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 && 1141 selEnd == mTextView.getText().length(); 1142 1143 mCreatedWithASelection = mFrozenWithFocus && mTextView.hasSelection() && 1144 !isFocusHighlighted; 1145 1146 if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { 1147 // If a tap was used to give focus to that view, move cursor at tap position. 1148 // Has to be done before onTakeFocus, which can be overloaded. 1149 final int lastTapPosition = getLastTapPosition(); 1150 if (lastTapPosition >= 0) { 1151 Selection.setSelection((Spannable) mTextView.getText(), lastTapPosition); 1152 } 1153 1154 // Note this may have to be moved out of the Editor class 1155 MovementMethod mMovement = mTextView.getMovementMethod(); 1156 if (mMovement != null) { 1157 mMovement.onTakeFocus(mTextView, (Spannable) mTextView.getText(), direction); 1158 } 1159 1160 // The DecorView does not have focus when the 'Done' ExtractEditText button is 1161 // pressed. Since it is the ViewAncestor's mView, it requests focus before 1162 // ExtractEditText clears focus, which gives focus to the ExtractEditText. 1163 // This special case ensure that we keep current selection in that case. 1164 // It would be better to know why the DecorView does not have focus at that time. 1165 if (((mTextView.isInExtractedMode()) || mSelectionMoved) && 1166 selStart >= 0 && selEnd >= 0) { 1167 /* 1168 * Someone intentionally set the selection, so let them 1169 * do whatever it is that they wanted to do instead of 1170 * the default on-focus behavior. We reset the selection 1171 * here instead of just skipping the onTakeFocus() call 1172 * because some movement methods do something other than 1173 * just setting the selection in theirs and we still 1174 * need to go through that path. 1175 */ 1176 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 1177 } 1178 1179 if (mSelectAllOnFocus) { 1180 mTextView.selectAllText(); 1181 } 1182 1183 mTouchFocusSelected = true; 1184 } 1185 1186 mFrozenWithFocus = false; 1187 mSelectionMoved = false; 1188 1189 if (mError != null) { 1190 showError(); 1191 } 1192 1193 makeBlink(); 1194 } else { 1195 if (mError != null) { 1196 hideError(); 1197 } 1198 // Don't leave us in the middle of a batch edit. 1199 mTextView.onEndBatchEdit(); 1200 1201 if (mTextView.isInExtractedMode()) { 1202 hideCursorAndSpanControllers(); 1203 stopTextActionModeWithPreservingSelection(); 1204 } else { 1205 hideCursorAndSpanControllers(); 1206 if (mTemporaryDetach) { 1207 stopTextActionModeWithPreservingSelection(); 1208 } else { 1209 stopTextActionMode(); 1210 } 1211 downgradeEasyCorrectionSpans(); 1212 } 1213 // No need to create the controller 1214 if (mSelectionModifierCursorController != null) { 1215 mSelectionModifierCursorController.resetTouchOffsets(); 1216 } 1217 } 1218 } 1219 1220 /** 1221 * Downgrades to simple suggestions all the easy correction spans that are not a spell check 1222 * span. 1223 */ 1224 private void downgradeEasyCorrectionSpans() { 1225 CharSequence text = mTextView.getText(); 1226 if (text instanceof Spannable) { 1227 Spannable spannable = (Spannable) text; 1228 SuggestionSpan[] suggestionSpans = spannable.getSpans(0, 1229 spannable.length(), SuggestionSpan.class); 1230 for (int i = 0; i < suggestionSpans.length; i++) { 1231 int flags = suggestionSpans[i].getFlags(); 1232 if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0 1233 && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) { 1234 flags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 1235 suggestionSpans[i].setFlags(flags); 1236 } 1237 } 1238 } 1239 } 1240 1241 void sendOnTextChanged(int start, int after) { 1242 updateSpellCheckSpans(start, start + after, false); 1243 1244 // Flip flag to indicate the word iterator needs to have the text reset. 1245 mUpdateWordIteratorText = true; 1246 1247 // Hide the controllers as soon as text is modified (typing, procedural...) 1248 // We do not hide the span controllers, since they can be added when a new text is 1249 // inserted into the text view (voice IME). 1250 hideCursorControllers(); 1251 // Reset drag accelerator. 1252 if (mSelectionModifierCursorController != null) { 1253 mSelectionModifierCursorController.resetTouchOffsets(); 1254 } 1255 stopTextActionMode(); 1256 } 1257 1258 private int getLastTapPosition() { 1259 // No need to create the controller at that point, no last tap position saved 1260 if (mSelectionModifierCursorController != null) { 1261 int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); 1262 if (lastTapPosition >= 0) { 1263 // Safety check, should not be possible. 1264 if (lastTapPosition > mTextView.getText().length()) { 1265 lastTapPosition = mTextView.getText().length(); 1266 } 1267 return lastTapPosition; 1268 } 1269 } 1270 1271 return -1; 1272 } 1273 1274 void onWindowFocusChanged(boolean hasWindowFocus) { 1275 if (hasWindowFocus) { 1276 if (mBlink != null) { 1277 mBlink.uncancel(); 1278 makeBlink(); 1279 } 1280 final InputMethodManager imm = InputMethodManager.peekInstance(); 1281 if (mTextView.hasSelection() && !extractedTextModeWillBeStarted()) { 1282 startSelectionActionMode(); 1283 } 1284 } else { 1285 if (mBlink != null) { 1286 mBlink.cancel(); 1287 } 1288 if (mInputContentType != null) { 1289 mInputContentType.enterDown = false; 1290 } 1291 // Order matters! Must be done before onParentLostFocus to rely on isShowingUp 1292 hideCursorAndSpanControllers(); 1293 stopTextActionModeWithPreservingSelection(); 1294 if (mSuggestionsPopupWindow != null) { 1295 mSuggestionsPopupWindow.onParentLostFocus(); 1296 } 1297 1298 // Don't leave us in the middle of a batch edit. Same as in onFocusChanged 1299 ensureEndedBatchEdit(); 1300 } 1301 } 1302 1303 private void updateTapState(MotionEvent event) { 1304 final int action = event.getActionMasked(); 1305 if (action == MotionEvent.ACTION_DOWN) { 1306 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 1307 // Detect double tap and triple click. 1308 if (((mTapState == TAP_STATE_FIRST_TAP) 1309 || ((mTapState == TAP_STATE_DOUBLE_TAP) && isMouse)) 1310 && (SystemClock.uptimeMillis() - mLastTouchUpTime) <= 1311 ViewConfiguration.getDoubleTapTimeout()) { 1312 if (mTapState == TAP_STATE_FIRST_TAP) { 1313 mTapState = TAP_STATE_DOUBLE_TAP; 1314 } else { 1315 mTapState = TAP_STATE_TRIPLE_CLICK; 1316 } 1317 } else { 1318 mTapState = TAP_STATE_FIRST_TAP; 1319 } 1320 } 1321 if (action == MotionEvent.ACTION_UP) { 1322 mLastTouchUpTime = SystemClock.uptimeMillis(); 1323 } 1324 } 1325 1326 private boolean shouldFilterOutTouchEvent(MotionEvent event) { 1327 if (!event.isFromSource(InputDevice.SOURCE_MOUSE)) { 1328 return false; 1329 } 1330 final boolean primaryButtonStateChanged = 1331 ((mLastButtonState ^ event.getButtonState()) & MotionEvent.BUTTON_PRIMARY) != 0; 1332 final int action = event.getActionMasked(); 1333 if ((action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_UP) 1334 && !primaryButtonStateChanged) { 1335 return true; 1336 } 1337 if (action == MotionEvent.ACTION_MOVE 1338 && !event.isButtonPressed(MotionEvent.BUTTON_PRIMARY)) { 1339 return true; 1340 } 1341 return false; 1342 } 1343 1344 void onTouchEvent(MotionEvent event) { 1345 final boolean filterOutEvent = shouldFilterOutTouchEvent(event); 1346 mLastButtonState = event.getButtonState(); 1347 if (filterOutEvent) { 1348 if (event.getActionMasked() == MotionEvent.ACTION_UP) { 1349 mDiscardNextActionUp = true; 1350 } 1351 return; 1352 } 1353 updateTapState(event); 1354 updateFloatingToolbarVisibility(event); 1355 1356 if (hasSelectionController()) { 1357 getSelectionController().onTouchEvent(event); 1358 } 1359 1360 if (mShowSuggestionRunnable != null) { 1361 mTextView.removeCallbacks(mShowSuggestionRunnable); 1362 mShowSuggestionRunnable = null; 1363 } 1364 1365 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 1366 mLastDownPositionX = event.getX(); 1367 mLastDownPositionY = event.getY(); 1368 1369 // Reset this state; it will be re-set if super.onTouchEvent 1370 // causes focus to move to the view. 1371 mTouchFocusSelected = false; 1372 mIgnoreActionUpEvent = false; 1373 } 1374 } 1375 1376 private void updateFloatingToolbarVisibility(MotionEvent event) { 1377 if (mTextActionMode != null) { 1378 switch (event.getActionMasked()) { 1379 case MotionEvent.ACTION_MOVE: 1380 hideFloatingToolbar(); 1381 break; 1382 case MotionEvent.ACTION_UP: // fall through 1383 case MotionEvent.ACTION_CANCEL: 1384 showFloatingToolbar(); 1385 } 1386 } 1387 } 1388 1389 private void hideFloatingToolbar() { 1390 if (mTextActionMode != null) { 1391 mTextView.removeCallbacks(mShowFloatingToolbar); 1392 mTextActionMode.hide(ActionMode.DEFAULT_HIDE_DURATION); 1393 } 1394 } 1395 1396 private void showFloatingToolbar() { 1397 if (mTextActionMode != null) { 1398 // Delay "show" so it doesn't interfere with click confirmations 1399 // or double-clicks that could "dismiss" the floating toolbar. 1400 int delay = ViewConfiguration.getDoubleTapTimeout(); 1401 mTextView.postDelayed(mShowFloatingToolbar, delay); 1402 } 1403 } 1404 1405 public void beginBatchEdit() { 1406 mInBatchEditControllers = true; 1407 final InputMethodState ims = mInputMethodState; 1408 if (ims != null) { 1409 int nesting = ++ims.mBatchEditNesting; 1410 if (nesting == 1) { 1411 ims.mCursorChanged = false; 1412 ims.mChangedDelta = 0; 1413 if (ims.mContentChanged) { 1414 // We already have a pending change from somewhere else, 1415 // so turn this into a full update. 1416 ims.mChangedStart = 0; 1417 ims.mChangedEnd = mTextView.getText().length(); 1418 } else { 1419 ims.mChangedStart = EXTRACT_UNKNOWN; 1420 ims.mChangedEnd = EXTRACT_UNKNOWN; 1421 ims.mContentChanged = false; 1422 } 1423 mUndoInputFilter.beginBatchEdit(); 1424 mTextView.onBeginBatchEdit(); 1425 } 1426 } 1427 } 1428 1429 public void endBatchEdit() { 1430 mInBatchEditControllers = false; 1431 final InputMethodState ims = mInputMethodState; 1432 if (ims != null) { 1433 int nesting = --ims.mBatchEditNesting; 1434 if (nesting == 0) { 1435 finishBatchEdit(ims); 1436 } 1437 } 1438 } 1439 1440 void ensureEndedBatchEdit() { 1441 final InputMethodState ims = mInputMethodState; 1442 if (ims != null && ims.mBatchEditNesting != 0) { 1443 ims.mBatchEditNesting = 0; 1444 finishBatchEdit(ims); 1445 } 1446 } 1447 1448 void finishBatchEdit(final InputMethodState ims) { 1449 mTextView.onEndBatchEdit(); 1450 mUndoInputFilter.endBatchEdit(); 1451 1452 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1453 mTextView.updateAfterEdit(); 1454 reportExtractedText(); 1455 } else if (ims.mCursorChanged) { 1456 // Cheesy way to get us to report the current cursor location. 1457 mTextView.invalidateCursor(); 1458 } 1459 // sendUpdateSelection knows to avoid sending if the selection did 1460 // not actually change. 1461 sendUpdateSelection(); 1462 } 1463 1464 static final int EXTRACT_NOTHING = -2; 1465 static final int EXTRACT_UNKNOWN = -1; 1466 1467 boolean extractText(ExtractedTextRequest request, ExtractedText outText) { 1468 return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, 1469 EXTRACT_UNKNOWN, outText); 1470 } 1471 1472 private boolean extractTextInternal(@Nullable ExtractedTextRequest request, 1473 int partialStartOffset, int partialEndOffset, int delta, 1474 @Nullable ExtractedText outText) { 1475 if (request == null || outText == null) { 1476 return false; 1477 } 1478 1479 final CharSequence content = mTextView.getText(); 1480 if (content == null) { 1481 return false; 1482 } 1483 1484 if (partialStartOffset != EXTRACT_NOTHING) { 1485 final int N = content.length(); 1486 if (partialStartOffset < 0) { 1487 outText.partialStartOffset = outText.partialEndOffset = -1; 1488 partialStartOffset = 0; 1489 partialEndOffset = N; 1490 } else { 1491 // Now use the delta to determine the actual amount of text 1492 // we need. 1493 partialEndOffset += delta; 1494 // Adjust offsets to ensure we contain full spans. 1495 if (content instanceof Spanned) { 1496 Spanned spanned = (Spanned)content; 1497 Object[] spans = spanned.getSpans(partialStartOffset, 1498 partialEndOffset, ParcelableSpan.class); 1499 int i = spans.length; 1500 while (i > 0) { 1501 i--; 1502 int j = spanned.getSpanStart(spans[i]); 1503 if (j < partialStartOffset) partialStartOffset = j; 1504 j = spanned.getSpanEnd(spans[i]); 1505 if (j > partialEndOffset) partialEndOffset = j; 1506 } 1507 } 1508 outText.partialStartOffset = partialStartOffset; 1509 outText.partialEndOffset = partialEndOffset - delta; 1510 1511 if (partialStartOffset > N) { 1512 partialStartOffset = N; 1513 } else if (partialStartOffset < 0) { 1514 partialStartOffset = 0; 1515 } 1516 if (partialEndOffset > N) { 1517 partialEndOffset = N; 1518 } else if (partialEndOffset < 0) { 1519 partialEndOffset = 0; 1520 } 1521 } 1522 if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) { 1523 outText.text = content.subSequence(partialStartOffset, 1524 partialEndOffset); 1525 } else { 1526 outText.text = TextUtils.substring(content, partialStartOffset, 1527 partialEndOffset); 1528 } 1529 } else { 1530 outText.partialStartOffset = 0; 1531 outText.partialEndOffset = 0; 1532 outText.text = ""; 1533 } 1534 outText.flags = 0; 1535 if (MetaKeyKeyListener.getMetaState(content, MetaKeyKeyListener.META_SELECTING) != 0) { 1536 outText.flags |= ExtractedText.FLAG_SELECTING; 1537 } 1538 if (mTextView.isSingleLine()) { 1539 outText.flags |= ExtractedText.FLAG_SINGLE_LINE; 1540 } 1541 outText.startOffset = 0; 1542 outText.selectionStart = mTextView.getSelectionStart(); 1543 outText.selectionEnd = mTextView.getSelectionEnd(); 1544 return true; 1545 } 1546 1547 boolean reportExtractedText() { 1548 final Editor.InputMethodState ims = mInputMethodState; 1549 if (ims != null) { 1550 final boolean contentChanged = ims.mContentChanged; 1551 if (contentChanged || ims.mSelectionModeChanged) { 1552 ims.mContentChanged = false; 1553 ims.mSelectionModeChanged = false; 1554 final ExtractedTextRequest req = ims.mExtractedTextRequest; 1555 if (req != null) { 1556 InputMethodManager imm = InputMethodManager.peekInstance(); 1557 if (imm != null) { 1558 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1559 "Retrieving extracted start=" + ims.mChangedStart + 1560 " end=" + ims.mChangedEnd + 1561 " delta=" + ims.mChangedDelta); 1562 if (ims.mChangedStart < 0 && !contentChanged) { 1563 ims.mChangedStart = EXTRACT_NOTHING; 1564 } 1565 if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, 1566 ims.mChangedDelta, ims.mExtractedText)) { 1567 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1568 "Reporting extracted start=" + 1569 ims.mExtractedText.partialStartOffset + 1570 " end=" + ims.mExtractedText.partialEndOffset + 1571 ": " + ims.mExtractedText.text); 1572 1573 imm.updateExtractedText(mTextView, req.token, ims.mExtractedText); 1574 ims.mChangedStart = EXTRACT_UNKNOWN; 1575 ims.mChangedEnd = EXTRACT_UNKNOWN; 1576 ims.mChangedDelta = 0; 1577 ims.mContentChanged = false; 1578 return true; 1579 } 1580 } 1581 } 1582 } 1583 } 1584 return false; 1585 } 1586 1587 private void sendUpdateSelection() { 1588 if (null != mInputMethodState && mInputMethodState.mBatchEditNesting <= 0) { 1589 final InputMethodManager imm = InputMethodManager.peekInstance(); 1590 if (null != imm) { 1591 final int selectionStart = mTextView.getSelectionStart(); 1592 final int selectionEnd = mTextView.getSelectionEnd(); 1593 int candStart = -1; 1594 int candEnd = -1; 1595 if (mTextView.getText() instanceof Spannable) { 1596 final Spannable sp = (Spannable) mTextView.getText(); 1597 candStart = EditableInputConnection.getComposingSpanStart(sp); 1598 candEnd = EditableInputConnection.getComposingSpanEnd(sp); 1599 } 1600 // InputMethodManager#updateSelection skips sending the message if 1601 // none of the parameters have changed since the last time we called it. 1602 imm.updateSelection(mTextView, 1603 selectionStart, selectionEnd, candStart, candEnd); 1604 } 1605 } 1606 } 1607 1608 void onDraw(Canvas canvas, Layout layout, Path highlight, Paint highlightPaint, 1609 int cursorOffsetVertical) { 1610 final int selectionStart = mTextView.getSelectionStart(); 1611 final int selectionEnd = mTextView.getSelectionEnd(); 1612 1613 final InputMethodState ims = mInputMethodState; 1614 if (ims != null && ims.mBatchEditNesting == 0) { 1615 InputMethodManager imm = InputMethodManager.peekInstance(); 1616 if (imm != null) { 1617 if (imm.isActive(mTextView)) { 1618 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1619 // We are in extract mode and the content has changed 1620 // in some way... just report complete new text to the 1621 // input method. 1622 reportExtractedText(); 1623 } 1624 } 1625 } 1626 } 1627 1628 if (mCorrectionHighlighter != null) { 1629 mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); 1630 } 1631 1632 if (highlight != null && selectionStart == selectionEnd && mCursorCount > 0) { 1633 drawCursor(canvas, cursorOffsetVertical); 1634 // Rely on the drawable entirely, do not draw the cursor line. 1635 // Has to be done after the IMM related code above which relies on the highlight. 1636 highlight = null; 1637 } 1638 1639 if (mTextView.canHaveDisplayList() && canvas.isHardwareAccelerated()) { 1640 drawHardwareAccelerated(canvas, layout, highlight, highlightPaint, 1641 cursorOffsetVertical); 1642 } else { 1643 layout.draw(canvas, highlight, highlightPaint, cursorOffsetVertical); 1644 } 1645 } 1646 1647 private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight, 1648 Paint highlightPaint, int cursorOffsetVertical) { 1649 final long lineRange = layout.getLineRangeForDraw(canvas); 1650 int firstLine = TextUtils.unpackRangeStartFromLong(lineRange); 1651 int lastLine = TextUtils.unpackRangeEndFromLong(lineRange); 1652 if (lastLine < 0) return; 1653 1654 layout.drawBackground(canvas, highlight, highlightPaint, cursorOffsetVertical, 1655 firstLine, lastLine); 1656 1657 if (layout instanceof DynamicLayout) { 1658 if (mTextRenderNodes == null) { 1659 mTextRenderNodes = ArrayUtils.emptyArray(TextRenderNode.class); 1660 } 1661 1662 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1663 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1664 int[] blockIndices = dynamicLayout.getBlockIndices(); 1665 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1666 final int indexFirstChangedBlock = dynamicLayout.getIndexFirstChangedBlock(); 1667 1668 int endOfPreviousBlock = -1; 1669 int searchStartIndex = 0; 1670 for (int i = 0; i < numberOfBlocks; i++) { 1671 int blockEndLine = blockEndLines[i]; 1672 int blockIndex = blockIndices[i]; 1673 1674 final boolean blockIsInvalid = blockIndex == DynamicLayout.INVALID_BLOCK_INDEX; 1675 if (blockIsInvalid) { 1676 blockIndex = getAvailableDisplayListIndex(blockIndices, numberOfBlocks, 1677 searchStartIndex); 1678 // Note how dynamic layout's internal block indices get updated from Editor 1679 blockIndices[i] = blockIndex; 1680 if (mTextRenderNodes[blockIndex] != null) { 1681 mTextRenderNodes[blockIndex].isDirty = true; 1682 } 1683 searchStartIndex = blockIndex + 1; 1684 } 1685 1686 if (mTextRenderNodes[blockIndex] == null) { 1687 mTextRenderNodes[blockIndex] = 1688 new TextRenderNode("Text " + blockIndex); 1689 } 1690 1691 final boolean blockDisplayListIsInvalid = mTextRenderNodes[blockIndex].needsRecord(); 1692 RenderNode blockDisplayList = mTextRenderNodes[blockIndex].renderNode; 1693 if (i >= indexFirstChangedBlock || blockDisplayListIsInvalid) { 1694 final int blockBeginLine = endOfPreviousBlock + 1; 1695 final int top = layout.getLineTop(blockBeginLine); 1696 final int bottom = layout.getLineBottom(blockEndLine); 1697 int left = 0; 1698 int right = mTextView.getWidth(); 1699 if (mTextView.getHorizontallyScrolling()) { 1700 float min = Float.MAX_VALUE; 1701 float max = Float.MIN_VALUE; 1702 for (int line = blockBeginLine; line <= blockEndLine; line++) { 1703 min = Math.min(min, layout.getLineLeft(line)); 1704 max = Math.max(max, layout.getLineRight(line)); 1705 } 1706 left = (int) min; 1707 right = (int) (max + 0.5f); 1708 } 1709 1710 // Rebuild display list if it is invalid 1711 if (blockDisplayListIsInvalid) { 1712 final DisplayListCanvas displayListCanvas = blockDisplayList.start( 1713 right - left, bottom - top); 1714 try { 1715 // drawText is always relative to TextView's origin, this translation 1716 // brings this range of text back to the top left corner of the viewport 1717 displayListCanvas.translate(-left, -top); 1718 layout.drawText(displayListCanvas, blockBeginLine, blockEndLine); 1719 mTextRenderNodes[blockIndex].isDirty = false; 1720 // No need to untranslate, previous context is popped after 1721 // drawDisplayList 1722 } finally { 1723 blockDisplayList.end(displayListCanvas); 1724 // Same as drawDisplayList below, handled by our TextView's parent 1725 blockDisplayList.setClipToBounds(false); 1726 } 1727 } 1728 1729 // Valid disply list whose index is >= indexFirstChangedBlock 1730 // only needs to update its drawing location. 1731 blockDisplayList.setLeftTopRightBottom(left, top, right, bottom); 1732 } 1733 1734 ((DisplayListCanvas) canvas).drawRenderNode(blockDisplayList); 1735 1736 endOfPreviousBlock = blockEndLine; 1737 } 1738 1739 dynamicLayout.setIndexFirstChangedBlock(numberOfBlocks); 1740 } else { 1741 // Boring layout is used for empty and hint text 1742 layout.drawText(canvas, firstLine, lastLine); 1743 } 1744 } 1745 1746 private int getAvailableDisplayListIndex(int[] blockIndices, int numberOfBlocks, 1747 int searchStartIndex) { 1748 int length = mTextRenderNodes.length; 1749 for (int i = searchStartIndex; i < length; i++) { 1750 boolean blockIndexFound = false; 1751 for (int j = 0; j < numberOfBlocks; j++) { 1752 if (blockIndices[j] == i) { 1753 blockIndexFound = true; 1754 break; 1755 } 1756 } 1757 if (blockIndexFound) continue; 1758 return i; 1759 } 1760 1761 // No available index found, the pool has to grow 1762 mTextRenderNodes = GrowingArrayUtils.append(mTextRenderNodes, length, null); 1763 return length; 1764 } 1765 1766 private void drawCursor(Canvas canvas, int cursorOffsetVertical) { 1767 final boolean translate = cursorOffsetVertical != 0; 1768 if (translate) canvas.translate(0, cursorOffsetVertical); 1769 for (int i = 0; i < mCursorCount; i++) { 1770 mCursorDrawable[i].draw(canvas); 1771 } 1772 if (translate) canvas.translate(0, -cursorOffsetVertical); 1773 } 1774 1775 /** 1776 * Invalidates all the sub-display lists that overlap the specified character range 1777 */ 1778 void invalidateTextDisplayList(Layout layout, int start, int end) { 1779 if (mTextRenderNodes != null && layout instanceof DynamicLayout) { 1780 final int firstLine = layout.getLineForOffset(start); 1781 final int lastLine = layout.getLineForOffset(end); 1782 1783 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1784 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1785 int[] blockIndices = dynamicLayout.getBlockIndices(); 1786 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1787 1788 int i = 0; 1789 // Skip the blocks before firstLine 1790 while (i < numberOfBlocks) { 1791 if (blockEndLines[i] >= firstLine) break; 1792 i++; 1793 } 1794 1795 // Invalidate all subsequent blocks until lastLine is passed 1796 while (i < numberOfBlocks) { 1797 final int blockIndex = blockIndices[i]; 1798 if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX) { 1799 mTextRenderNodes[blockIndex].isDirty = true; 1800 } 1801 if (blockEndLines[i] >= lastLine) break; 1802 i++; 1803 } 1804 } 1805 } 1806 1807 void invalidateTextDisplayList() { 1808 if (mTextRenderNodes != null) { 1809 for (int i = 0; i < mTextRenderNodes.length; i++) { 1810 if (mTextRenderNodes[i] != null) mTextRenderNodes[i].isDirty = true; 1811 } 1812 } 1813 } 1814 1815 void updateCursorsPositions() { 1816 if (mTextView.mCursorDrawableRes == 0) { 1817 mCursorCount = 0; 1818 return; 1819 } 1820 1821 Layout layout = getActiveLayout(); 1822 final int offset = mTextView.getSelectionStart(); 1823 final int line = layout.getLineForOffset(offset); 1824 final int top = layout.getLineTop(line); 1825 final int bottom = layout.getLineTop(line + 1); 1826 1827 mCursorCount = layout.isLevelBoundary(offset) ? 2 : 1; 1828 1829 int middle = bottom; 1830 if (mCursorCount == 2) { 1831 // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)} 1832 middle = (top + bottom) >> 1; 1833 } 1834 1835 boolean clamped = layout.shouldClampCursor(line); 1836 updateCursorPosition(0, top, middle, layout.getPrimaryHorizontal(offset, clamped)); 1837 1838 if (mCursorCount == 2) { 1839 updateCursorPosition(1, middle, bottom, layout.getSecondaryHorizontal(offset, clamped)); 1840 } 1841 } 1842 1843 void refreshTextActionMode() { 1844 if (extractedTextModeWillBeStarted()) { 1845 return; 1846 } 1847 final boolean hasSelection = mTextView.hasSelection(); 1848 final SelectionModifierCursorController selectionController = getSelectionController(); 1849 final InsertionPointCursorController insertionController = getInsertionController(); 1850 if ((selectionController != null && selectionController.isCursorBeingModified()) 1851 || (insertionController != null && insertionController.isCursorBeingModified())) { 1852 // ActionMode should be managed by the currently active cursor controller. 1853 return; 1854 } 1855 if (hasSelection) { 1856 if (mTextActionMode == null || selectionController == null 1857 || !selectionController.isActive()) { 1858 // Avoid dismissing the selection if it exists. 1859 stopTextActionModeWithPreservingSelection(); 1860 startSelectionActionMode(); 1861 } else { 1862 mTextActionMode.invalidateContentRect(); 1863 } 1864 } else { 1865 // Insertion action mode is started only when insertion controller is explicitly 1866 // activated. 1867 if (insertionController == null || !insertionController.isActive()) { 1868 stopTextActionMode(); 1869 } else if (mTextActionMode != null) { 1870 mTextActionMode.invalidateContentRect(); 1871 } 1872 } 1873 } 1874 1875 /** 1876 * Start an Insertion action mode. 1877 */ 1878 void startInsertionActionMode() { 1879 if (mInsertionActionModeRunnable != null) { 1880 mTextView.removeCallbacks(mInsertionActionModeRunnable); 1881 } 1882 if (extractedTextModeWillBeStarted()) { 1883 return; 1884 } 1885 stopTextActionMode(); 1886 1887 ActionMode.Callback actionModeCallback = 1888 new TextActionModeCallback(false /* hasSelection */); 1889 mTextActionMode = mTextView.startActionMode( 1890 actionModeCallback, ActionMode.TYPE_FLOATING); 1891 if (mTextActionMode != null && getInsertionController() != null) { 1892 getInsertionController().show(); 1893 } 1894 } 1895 1896 /** 1897 * Starts a Selection Action Mode with the current selection and ensures the selection handles 1898 * are shown if there is a selection. This should be used when the mode is started from a 1899 * non-touch event. 1900 * 1901 * @return true if the selection mode was actually started. 1902 */ 1903 private boolean startSelectionActionMode() { 1904 boolean selectionStarted = startSelectionActionModeInternal(); 1905 if (selectionStarted) { 1906 getSelectionController().show(); 1907 } 1908 return selectionStarted; 1909 } 1910 1911 /** 1912 * If the TextView allows text selection, selects the current word when no existing selection 1913 * was available and starts a drag. 1914 * 1915 * @return true if the drag was started. 1916 */ 1917 private boolean selectCurrentWordAndStartDrag() { 1918 if (mInsertionActionModeRunnable != null) { 1919 mTextView.removeCallbacks(mInsertionActionModeRunnable); 1920 } 1921 if (extractedTextModeWillBeStarted()) { 1922 return false; 1923 } 1924 if (!checkField()) { 1925 return false; 1926 } 1927 if (!mTextView.hasSelection() && !selectCurrentWord()) { 1928 // No selection and cannot select a word. 1929 return false; 1930 } 1931 stopTextActionModeWithPreservingSelection(); 1932 getSelectionController().enterDrag( 1933 SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_WORD); 1934 return true; 1935 } 1936 1937 /** 1938 * Checks whether a selection can be performed on the current TextView. 1939 * 1940 * @return true if a selection can be performed 1941 */ 1942 boolean checkField() { 1943 if (!mTextView.canSelectText() || !mTextView.requestFocus()) { 1944 Log.w(TextView.LOG_TAG, 1945 "TextView does not support text selection. Selection cancelled."); 1946 return false; 1947 } 1948 return true; 1949 } 1950 1951 private boolean startSelectionActionModeInternal() { 1952 if (extractedTextModeWillBeStarted()) { 1953 return false; 1954 } 1955 if (mTextActionMode != null) { 1956 // Text action mode is already started 1957 mTextActionMode.invalidate(); 1958 return false; 1959 } 1960 1961 if (!checkField() || !mTextView.hasSelection()) { 1962 return false; 1963 } 1964 1965 ActionMode.Callback actionModeCallback = 1966 new TextActionModeCallback(true /* hasSelection */); 1967 mTextActionMode = mTextView.startActionMode(actionModeCallback, ActionMode.TYPE_FLOATING); 1968 1969 final boolean selectionStarted = mTextActionMode != null; 1970 if (selectionStarted && !mTextView.isTextSelectable() && mShowSoftInputOnFocus) { 1971 // Show the IME to be able to replace text, except when selecting non editable text. 1972 final InputMethodManager imm = InputMethodManager.peekInstance(); 1973 if (imm != null) { 1974 imm.showSoftInput(mTextView, 0, null); 1975 } 1976 } 1977 return selectionStarted; 1978 } 1979 1980 boolean extractedTextModeWillBeStarted() { 1981 if (!(mTextView.isInExtractedMode())) { 1982 final InputMethodManager imm = InputMethodManager.peekInstance(); 1983 return imm != null && imm.isFullscreenMode(); 1984 } 1985 return false; 1986 } 1987 1988 /** 1989 * @return <code>true</code> if it's reasonable to offer to show suggestions depending on 1990 * the current cursor position or selection range. This method is consistent with the 1991 * method to show suggestions {@link SuggestionsPopupWindow#updateSuggestions}. 1992 */ 1993 private boolean shouldOfferToShowSuggestions() { 1994 CharSequence text = mTextView.getText(); 1995 if (!(text instanceof Spannable)) return false; 1996 1997 final Spannable spannable = (Spannable) text; 1998 final int selectionStart = mTextView.getSelectionStart(); 1999 final int selectionEnd = mTextView.getSelectionEnd(); 2000 final SuggestionSpan[] suggestionSpans = spannable.getSpans(selectionStart, selectionEnd, 2001 SuggestionSpan.class); 2002 if (suggestionSpans.length == 0) { 2003 return false; 2004 } 2005 if (selectionStart == selectionEnd) { 2006 // Spans overlap the cursor. 2007 for (int i = 0; i < suggestionSpans.length; i++) { 2008 if (suggestionSpans[i].getSuggestions().length > 0) { 2009 return true; 2010 } 2011 } 2012 return false; 2013 } 2014 int minSpanStart = mTextView.getText().length(); 2015 int maxSpanEnd = 0; 2016 int unionOfSpansCoveringSelectionStartStart = mTextView.getText().length(); 2017 int unionOfSpansCoveringSelectionStartEnd = 0; 2018 boolean hasValidSuggestions = false; 2019 for (int i = 0; i < suggestionSpans.length; i++) { 2020 final int spanStart = spannable.getSpanStart(suggestionSpans[i]); 2021 final int spanEnd = spannable.getSpanEnd(suggestionSpans[i]); 2022 minSpanStart = Math.min(minSpanStart, spanStart); 2023 maxSpanEnd = Math.max(maxSpanEnd, spanEnd); 2024 if (selectionStart < spanStart || selectionStart > spanEnd) { 2025 // The span doesn't cover the current selection start point. 2026 continue; 2027 } 2028 hasValidSuggestions = 2029 hasValidSuggestions || suggestionSpans[i].getSuggestions().length > 0; 2030 unionOfSpansCoveringSelectionStartStart = 2031 Math.min(unionOfSpansCoveringSelectionStartStart, spanStart); 2032 unionOfSpansCoveringSelectionStartEnd = 2033 Math.max(unionOfSpansCoveringSelectionStartEnd, spanEnd); 2034 } 2035 if (!hasValidSuggestions) { 2036 return false; 2037 } 2038 if (unionOfSpansCoveringSelectionStartStart >= unionOfSpansCoveringSelectionStartEnd) { 2039 // No spans cover the selection start point. 2040 return false; 2041 } 2042 if (minSpanStart < unionOfSpansCoveringSelectionStartStart 2043 || maxSpanEnd > unionOfSpansCoveringSelectionStartEnd) { 2044 // There is a span that is not covered by the union. In this case, we soouldn't offer 2045 // to show suggestions as it's confusing. 2046 return false; 2047 } 2048 return true; 2049 } 2050 2051 /** 2052 * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with 2053 * {@link SuggestionSpan#FLAG_EASY_CORRECT} set. 2054 */ 2055 private boolean isCursorInsideEasyCorrectionSpan() { 2056 Spannable spannable = (Spannable) mTextView.getText(); 2057 SuggestionSpan[] suggestionSpans = spannable.getSpans(mTextView.getSelectionStart(), 2058 mTextView.getSelectionEnd(), SuggestionSpan.class); 2059 for (int i = 0; i < suggestionSpans.length; i++) { 2060 if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) { 2061 return true; 2062 } 2063 } 2064 return false; 2065 } 2066 2067 void onTouchUpEvent(MotionEvent event) { 2068 boolean selectAllGotFocus = mSelectAllOnFocus && mTextView.didTouchFocusSelect(); 2069 hideCursorAndSpanControllers(); 2070 stopTextActionMode(); 2071 CharSequence text = mTextView.getText(); 2072 if (!selectAllGotFocus && text.length() > 0) { 2073 // Move cursor 2074 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 2075 Selection.setSelection((Spannable) text, offset); 2076 if (mSpellChecker != null) { 2077 // When the cursor moves, the word that was typed may need spell check 2078 mSpellChecker.onSelectionChanged(); 2079 } 2080 2081 if (!extractedTextModeWillBeStarted()) { 2082 if (isCursorInsideEasyCorrectionSpan()) { 2083 // Cancel the single tap delayed runnable. 2084 if (mInsertionActionModeRunnable != null) { 2085 mTextView.removeCallbacks(mInsertionActionModeRunnable); 2086 } 2087 2088 mShowSuggestionRunnable = new Runnable() { 2089 public void run() { 2090 showSuggestions(); 2091 } 2092 }; 2093 // removeCallbacks is performed on every touch 2094 mTextView.postDelayed(mShowSuggestionRunnable, 2095 ViewConfiguration.getDoubleTapTimeout()); 2096 } else if (hasInsertionController()) { 2097 getInsertionController().show(); 2098 } 2099 } 2100 } 2101 } 2102 2103 protected void stopTextActionMode() { 2104 if (mTextActionMode != null) { 2105 // This will hide the mSelectionModifierCursorController 2106 mTextActionMode.finish(); 2107 } 2108 } 2109 2110 private void stopTextActionModeWithPreservingSelection() { 2111 mPreserveSelection = true; 2112 stopTextActionMode(); 2113 mPreserveSelection = false; 2114 } 2115 2116 /** 2117 * @return True if this view supports insertion handles. 2118 */ 2119 boolean hasInsertionController() { 2120 return mInsertionControllerEnabled; 2121 } 2122 2123 /** 2124 * @return True if this view supports selection handles. 2125 */ 2126 boolean hasSelectionController() { 2127 return mSelectionControllerEnabled; 2128 } 2129 2130 InsertionPointCursorController getInsertionController() { 2131 if (!mInsertionControllerEnabled) { 2132 return null; 2133 } 2134 2135 if (mInsertionPointCursorController == null) { 2136 mInsertionPointCursorController = new InsertionPointCursorController(); 2137 2138 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 2139 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 2140 } 2141 2142 return mInsertionPointCursorController; 2143 } 2144 2145 SelectionModifierCursorController getSelectionController() { 2146 if (!mSelectionControllerEnabled) { 2147 return null; 2148 } 2149 2150 if (mSelectionModifierCursorController == null) { 2151 mSelectionModifierCursorController = new SelectionModifierCursorController(); 2152 2153 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 2154 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 2155 } 2156 2157 return mSelectionModifierCursorController; 2158 } 2159 2160 /** 2161 * @hide 2162 */ 2163 @VisibleForTesting 2164 public Drawable[] getCursorDrawable() { 2165 return mCursorDrawable; 2166 } 2167 2168 private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) { 2169 if (mCursorDrawable[cursorIndex] == null) 2170 mCursorDrawable[cursorIndex] = mTextView.getContext().getDrawable( 2171 mTextView.mCursorDrawableRes); 2172 final Drawable drawable = mCursorDrawable[cursorIndex]; 2173 final int left = clampCursorHorizontalPosition(drawable, horizontal); 2174 final int width = drawable.getIntrinsicWidth(); 2175 drawable.setBounds(left, top - mTempRect.top, left + width, 2176 bottom + mTempRect.bottom); 2177 } 2178 2179 /** 2180 * Return clamped position for the cursor. If the cursor is within the boundaries of the view, 2181 * then it is offset with the left padding of the cursor drawable. If the cursor is at 2182 * the beginning or the end of the text then its drawable edge is aligned with left or right of 2183 * the view boundary. 2184 * 2185 * @param drawable Cursor drawable. 2186 * @param horizontal Horizontal position for the cursor. 2187 * @return The clamped horizontal position for the cursor. 2188 */ 2189 private final int clampCursorHorizontalPosition(final Drawable drawable, float 2190 horizontal) { 2191 horizontal = Math.max(0.5f, horizontal - 0.5f); 2192 if (mTempRect == null) mTempRect = new Rect(); 2193 drawable.getPadding(mTempRect); 2194 int scrollX = mTextView.getScrollX(); 2195 float horizontalDiff = horizontal - scrollX; 2196 int viewClippedWidth = mTextView.getWidth() - mTextView.getCompoundPaddingLeft() 2197 - mTextView.getCompoundPaddingRight(); 2198 2199 final int left; 2200 if (horizontalDiff >= (viewClippedWidth - 1f)) { 2201 // at the rightmost position 2202 final int cursorWidth = drawable.getIntrinsicWidth(); 2203 left = viewClippedWidth + scrollX - (cursorWidth - mTempRect.right); 2204 } else if (Math.abs(horizontalDiff) <= 1f) { 2205 // at the leftmost position 2206 left = scrollX - mTempRect.left; 2207 } else { 2208 left = (int) horizontal - mTempRect.left; 2209 } 2210 return left; 2211 } 2212 2213 /** 2214 * Called by the framework in response to a text auto-correction (such as fixing a typo using a 2215 * a dictionary) from the current input method, provided by it calling 2216 * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default 2217 * implementation flashes the background of the corrected word to provide feedback to the user. 2218 * 2219 * @param info The auto correct info about the text that was corrected. 2220 */ 2221 public void onCommitCorrection(CorrectionInfo info) { 2222 if (mCorrectionHighlighter == null) { 2223 mCorrectionHighlighter = new CorrectionHighlighter(); 2224 } else { 2225 mCorrectionHighlighter.invalidate(false); 2226 } 2227 2228 mCorrectionHighlighter.highlight(info); 2229 } 2230 2231 void showSuggestions() { 2232 if (mSuggestionsPopupWindow == null) { 2233 mSuggestionsPopupWindow = new SuggestionsPopupWindow(); 2234 } 2235 hideCursorAndSpanControllers(); 2236 stopTextActionMode(); 2237 mSuggestionsPopupWindow.show(); 2238 } 2239 2240 void onScrollChanged() { 2241 if (mPositionListener != null) { 2242 mPositionListener.onScrollChanged(); 2243 } 2244 if (mTextActionMode != null) { 2245 mTextActionMode.invalidateContentRect(); 2246 } 2247 } 2248 2249 /** 2250 * @return True when the TextView isFocused and has a valid zero-length selection (cursor). 2251 */ 2252 private boolean shouldBlink() { 2253 if (!isCursorVisible() || !mTextView.isFocused()) return false; 2254 2255 final int start = mTextView.getSelectionStart(); 2256 if (start < 0) return false; 2257 2258 final int end = mTextView.getSelectionEnd(); 2259 if (end < 0) return false; 2260 2261 return start == end; 2262 } 2263 2264 void makeBlink() { 2265 if (shouldBlink()) { 2266 mShowCursor = SystemClock.uptimeMillis(); 2267 if (mBlink == null) mBlink = new Blink(); 2268 mTextView.removeCallbacks(mBlink); 2269 mTextView.postDelayed(mBlink, BLINK); 2270 } else { 2271 if (mBlink != null) mTextView.removeCallbacks(mBlink); 2272 } 2273 } 2274 2275 private class Blink implements Runnable { 2276 private boolean mCancelled; 2277 2278 public void run() { 2279 if (mCancelled) { 2280 return; 2281 } 2282 2283 mTextView.removeCallbacks(this); 2284 2285 if (shouldBlink()) { 2286 if (mTextView.getLayout() != null) { 2287 mTextView.invalidateCursorPath(); 2288 } 2289 2290 mTextView.postDelayed(this, BLINK); 2291 } 2292 } 2293 2294 void cancel() { 2295 if (!mCancelled) { 2296 mTextView.removeCallbacks(this); 2297 mCancelled = true; 2298 } 2299 } 2300 2301 void uncancel() { 2302 mCancelled = false; 2303 } 2304 } 2305 2306 private DragShadowBuilder getTextThumbnailBuilder(int start, int end) { 2307 TextView shadowView = (TextView) View.inflate(mTextView.getContext(), 2308 com.android.internal.R.layout.text_drag_thumbnail, null); 2309 2310 if (shadowView == null) { 2311 throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); 2312 } 2313 2314 if (end - start > DRAG_SHADOW_MAX_TEXT_LENGTH) { 2315 final long range = getCharClusterRange(start + DRAG_SHADOW_MAX_TEXT_LENGTH); 2316 end = TextUtils.unpackRangeEndFromLong(range); 2317 } 2318 final CharSequence text = mTextView.getTransformedText(start, end); 2319 shadowView.setText(text); 2320 shadowView.setTextColor(mTextView.getTextColors()); 2321 2322 shadowView.setTextAppearance(R.styleable.Theme_textAppearanceLarge); 2323 shadowView.setGravity(Gravity.CENTER); 2324 2325 shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2326 ViewGroup.LayoutParams.WRAP_CONTENT)); 2327 2328 final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); 2329 shadowView.measure(size, size); 2330 2331 shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight()); 2332 shadowView.invalidate(); 2333 return new DragShadowBuilder(shadowView); 2334 } 2335 2336 private static class DragLocalState { 2337 public TextView sourceTextView; 2338 public int start, end; 2339 2340 public DragLocalState(TextView sourceTextView, int start, int end) { 2341 this.sourceTextView = sourceTextView; 2342 this.start = start; 2343 this.end = end; 2344 } 2345 } 2346 2347 void onDrop(DragEvent event) { 2348 StringBuilder content = new StringBuilder(""); 2349 2350 final DropPermissions dropPermissions = DropPermissions.obtain(event); 2351 if (dropPermissions != null) { 2352 dropPermissions.takeTransient(); 2353 } 2354 2355 try { 2356 ClipData clipData = event.getClipData(); 2357 final int itemCount = clipData.getItemCount(); 2358 for (int i=0; i < itemCount; i++) { 2359 Item item = clipData.getItemAt(i); 2360 content.append(item.coerceToStyledText(mTextView.getContext())); 2361 } 2362 } 2363 finally { 2364 if (dropPermissions != null) { 2365 dropPermissions.release(); 2366 } 2367 } 2368 2369 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 2370 2371 Object localState = event.getLocalState(); 2372 DragLocalState dragLocalState = null; 2373 if (localState instanceof DragLocalState) { 2374 dragLocalState = (DragLocalState) localState; 2375 } 2376 boolean dragDropIntoItself = dragLocalState != null && 2377 dragLocalState.sourceTextView == mTextView; 2378 2379 if (dragDropIntoItself) { 2380 if (offset >= dragLocalState.start && offset < dragLocalState.end) { 2381 // A drop inside the original selection discards the drop. 2382 return; 2383 } 2384 } 2385 2386 final int originalLength = mTextView.getText().length(); 2387 int min = offset; 2388 int max = offset; 2389 2390 Selection.setSelection((Spannable) mTextView.getText(), max); 2391 mTextView.replaceText_internal(min, max, content); 2392 2393 if (dragDropIntoItself) { 2394 int dragSourceStart = dragLocalState.start; 2395 int dragSourceEnd = dragLocalState.end; 2396 if (max <= dragSourceStart) { 2397 // Inserting text before selection has shifted positions 2398 final int shift = mTextView.getText().length() - originalLength; 2399 dragSourceStart += shift; 2400 dragSourceEnd += shift; 2401 } 2402 2403 // Delete original selection 2404 mTextView.deleteText_internal(dragSourceStart, dragSourceEnd); 2405 2406 // Make sure we do not leave two adjacent spaces. 2407 final int prevCharIdx = Math.max(0, dragSourceStart - 1); 2408 final int nextCharIdx = Math.min(mTextView.getText().length(), dragSourceStart + 1); 2409 if (nextCharIdx > prevCharIdx + 1) { 2410 CharSequence t = mTextView.getTransformedText(prevCharIdx, nextCharIdx); 2411 if (Character.isSpaceChar(t.charAt(0)) && Character.isSpaceChar(t.charAt(1))) { 2412 mTextView.deleteText_internal(prevCharIdx, prevCharIdx + 1); 2413 } 2414 } 2415 } 2416 } 2417 2418 public void addSpanWatchers(Spannable text) { 2419 final int textLength = text.length(); 2420 2421 if (mKeyListener != null) { 2422 text.setSpan(mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2423 } 2424 2425 if (mSpanController == null) { 2426 mSpanController = new SpanController(); 2427 } 2428 text.setSpan(mSpanController, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2429 } 2430 2431 void setContextMenuAnchor(float x, float y) { 2432 mContextMenuAnchorX = x; 2433 mContextMenuAnchorY = y; 2434 } 2435 2436 void onCreateContextMenu(ContextMenu menu) { 2437 if (mIsBeingLongClicked || Float.isNaN(mContextMenuAnchorX) 2438 || Float.isNaN(mContextMenuAnchorY)) { 2439 return; 2440 } 2441 final int offset = mTextView.getOffsetForPosition(mContextMenuAnchorX, mContextMenuAnchorY); 2442 if (offset == -1) { 2443 return; 2444 } 2445 stopTextActionModeWithPreservingSelection(); 2446 final boolean isOnSelection = mTextView.hasSelection() 2447 && offset >= mTextView.getSelectionStart() && offset <= mTextView.getSelectionEnd(); 2448 if (!isOnSelection) { 2449 // Right clicked position is not on the selection. Remove the selection and move the 2450 // cursor to the right clicked position. 2451 Selection.setSelection((Spannable) mTextView.getText(), offset); 2452 stopTextActionMode(); 2453 } 2454 2455 if (shouldOfferToShowSuggestions()) { 2456 if (mSuggestionInfosInContextMenu == null) { 2457 mSuggestionInfosInContextMenu = 2458 new SuggestionInfo[SuggestionSpan.SUGGESTIONS_MAX_SIZE]; 2459 for (int i = 0; i < mSuggestionInfosInContextMenu.length; i++) { 2460 mSuggestionInfosInContextMenu[i] = new SuggestionInfo(); 2461 } 2462 } 2463 final SubMenu subMenu = menu.addSubMenu(Menu.NONE, Menu.NONE, MENU_ITEM_ORDER_REPLACE, 2464 com.android.internal.R.string.replace); 2465 mSuggestionHelper.getSuggestionInfo(mSuggestionInfosInContextMenu); 2466 int i = 0; 2467 for (final SuggestionInfo info : mSuggestionInfosInContextMenu) { 2468 info.mSuggestionEnd = info.mText.length(); 2469 subMenu.add(Menu.NONE, Menu.NONE, i++, info.mText) 2470 .setOnMenuItemClickListener(mOnContextMenuReplaceItemClickListener); 2471 } 2472 } 2473 2474 menu.add(Menu.NONE, TextView.ID_UNDO, MENU_ITEM_ORDER_UNDO, 2475 com.android.internal.R.string.undo) 2476 .setAlphabeticShortcut('z') 2477 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2478 .setEnabled(mTextView.canUndo()); 2479 menu.add(Menu.NONE, TextView.ID_REDO, MENU_ITEM_ORDER_REDO, 2480 com.android.internal.R.string.redo) 2481 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2482 .setEnabled(mTextView.canRedo()); 2483 2484 menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, 2485 com.android.internal.R.string.cut) 2486 .setAlphabeticShortcut('x') 2487 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2488 .setEnabled(mTextView.canCut()); 2489 menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, 2490 com.android.internal.R.string.copy) 2491 .setAlphabeticShortcut('c') 2492 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2493 .setEnabled(mTextView.canCopy()); 2494 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, 2495 com.android.internal.R.string.paste) 2496 .setAlphabeticShortcut('v') 2497 .setEnabled(mTextView.canPaste()) 2498 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2499 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE_AS_PLAIN_TEXT, 2500 com.android.internal.R.string.paste_as_plain_text) 2501 .setEnabled(mTextView.canPaste()) 2502 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2503 menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, 2504 com.android.internal.R.string.share) 2505 .setEnabled(mTextView.canShare()) 2506 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2507 menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, 2508 com.android.internal.R.string.selectAll) 2509 .setAlphabeticShortcut('a') 2510 .setEnabled(mTextView.canSelectAllText()) 2511 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2512 2513 mPreserveSelection = true; 2514 } 2515 2516 private void replaceWithSuggestion(final SuggestionInfo suggestionInfo) { 2517 final Editable editable = (Editable) mTextView.getText(); 2518 if (editable.getSpanStart(suggestionInfo.mSuggestionSpan) < 0) { 2519 // Suggestion span coundn't be found. Try to find a suggestion span that has the same 2520 // contents. 2521 final SuggestionSpan[] suggestionSpans = editable.getSpans( 2522 suggestionInfo.mSuggestionSpanStart, suggestionInfo.mSuggestionSpanEnd, 2523 SuggestionSpan.class); 2524 for (final SuggestionSpan suggestionSpan : suggestionSpans) { 2525 final int spanStart = editable.getSpanStart(suggestionSpan); 2526 if (spanStart != suggestionInfo.mSuggestionSpanStart) { 2527 continue; 2528 } 2529 int spanEnd = editable.getSpanEnd(suggestionSpan); 2530 if (spanEnd != suggestionInfo.mSuggestionSpanEnd) { 2531 continue; 2532 } 2533 if (suggestionSpan.equals(suggestionInfo.mSuggestionSpan)) { 2534 // Found. 2535 suggestionInfo.mSuggestionSpan = suggestionSpan; 2536 break; 2537 } 2538 } 2539 } 2540 final int spanStart = editable.getSpanStart(suggestionInfo.mSuggestionSpan); 2541 final int spanEnd = editable.getSpanEnd(suggestionInfo.mSuggestionSpan); 2542 if (spanStart < 0 || spanEnd <= spanStart) { 2543 // Span has been removed 2544 return; 2545 } 2546 2547 final String originalText = TextUtils.substring(editable, spanStart, spanEnd); 2548 // SuggestionSpans are removed by replace: save them before 2549 SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd, 2550 SuggestionSpan.class); 2551 final int length = suggestionSpans.length; 2552 int[] suggestionSpansStarts = new int[length]; 2553 int[] suggestionSpansEnds = new int[length]; 2554 int[] suggestionSpansFlags = new int[length]; 2555 for (int i = 0; i < length; i++) { 2556 final SuggestionSpan suggestionSpan = suggestionSpans[i]; 2557 suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan); 2558 suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan); 2559 suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan); 2560 2561 // Remove potential misspelled flags 2562 int suggestionSpanFlags = suggestionSpan.getFlags(); 2563 if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) != 0) { 2564 suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED; 2565 suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 2566 suggestionSpan.setFlags(suggestionSpanFlags); 2567 } 2568 } 2569 2570 // Notify source IME of the suggestion pick. Do this before swapping texts. 2571 suggestionInfo.mSuggestionSpan.notifySelection( 2572 mTextView.getContext(), originalText, suggestionInfo.mSuggestionIndex); 2573 2574 // Swap text content between actual text and Suggestion span 2575 final int suggestionStart = suggestionInfo.mSuggestionStart; 2576 final int suggestionEnd = suggestionInfo.mSuggestionEnd; 2577 final String suggestion = suggestionInfo.mText.subSequence( 2578 suggestionStart, suggestionEnd).toString(); 2579 mTextView.replaceText_internal(spanStart, spanEnd, suggestion); 2580 2581 String[] suggestions = suggestionInfo.mSuggestionSpan.getSuggestions(); 2582 suggestions[suggestionInfo.mSuggestionIndex] = originalText; 2583 2584 // Restore previous SuggestionSpans 2585 final int lengthDelta = suggestion.length() - (spanEnd - spanStart); 2586 for (int i = 0; i < length; i++) { 2587 // Only spans that include the modified region make sense after replacement 2588 // Spans partially included in the replaced region are removed, there is no 2589 // way to assign them a valid range after replacement 2590 if (suggestionSpansStarts[i] <= spanStart && suggestionSpansEnds[i] >= spanEnd) { 2591 mTextView.setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i], 2592 suggestionSpansEnds[i] + lengthDelta, suggestionSpansFlags[i]); 2593 } 2594 } 2595 // Move cursor at the end of the replaced word 2596 final int newCursorPosition = spanEnd + lengthDelta; 2597 mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); 2598 } 2599 2600 private final MenuItem.OnMenuItemClickListener mOnContextMenuItemClickListener = 2601 new MenuItem.OnMenuItemClickListener() { 2602 @Override 2603 public boolean onMenuItemClick(MenuItem item) { 2604 if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { 2605 return true; 2606 } 2607 return mTextView.onTextContextMenuItem(item.getItemId()); 2608 } 2609 }; 2610 2611 private final MenuItem.OnMenuItemClickListener mOnContextMenuReplaceItemClickListener = 2612 new MenuItem.OnMenuItemClickListener() { 2613 @Override 2614 public boolean onMenuItemClick(MenuItem item) { 2615 int index = item.getOrder(); 2616 if (index < 0 || index >= mSuggestionInfosInContextMenu.length) { 2617 clear(); 2618 return false; 2619 } 2620 replaceWithSuggestion(mSuggestionInfosInContextMenu[index]); 2621 clear(); 2622 return true; 2623 } 2624 2625 private void clear() { 2626 for (final SuggestionInfo info : mSuggestionInfosInContextMenu) { 2627 info.clear(); 2628 } 2629 } 2630 }; 2631 2632 /** 2633 * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related 2634 * pop-up should be displayed. 2635 * Also monitors {@link Selection} to call back to the attached input method. 2636 */ 2637 class SpanController implements SpanWatcher { 2638 2639 private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs 2640 2641 private EasyEditPopupWindow mPopupWindow; 2642 2643 private Runnable mHidePopup; 2644 2645 // This function is pure but inner classes can't have static functions 2646 private boolean isNonIntermediateSelectionSpan(final Spannable text, 2647 final Object span) { 2648 return (Selection.SELECTION_START == span || Selection.SELECTION_END == span) 2649 && (text.getSpanFlags(span) & Spanned.SPAN_INTERMEDIATE) == 0; 2650 } 2651 2652 @Override 2653 public void onSpanAdded(Spannable text, Object span, int start, int end) { 2654 if (isNonIntermediateSelectionSpan(text, span)) { 2655 sendUpdateSelection(); 2656 } else if (span instanceof EasyEditSpan) { 2657 if (mPopupWindow == null) { 2658 mPopupWindow = new EasyEditPopupWindow(); 2659 mHidePopup = new Runnable() { 2660 @Override 2661 public void run() { 2662 hide(); 2663 } 2664 }; 2665 } 2666 2667 // Make sure there is only at most one EasyEditSpan in the text 2668 if (mPopupWindow.mEasyEditSpan != null) { 2669 mPopupWindow.mEasyEditSpan.setDeleteEnabled(false); 2670 } 2671 2672 mPopupWindow.setEasyEditSpan((EasyEditSpan) span); 2673 mPopupWindow.setOnDeleteListener(new EasyEditDeleteListener() { 2674 @Override 2675 public void onDeleteClick(EasyEditSpan span) { 2676 Editable editable = (Editable) mTextView.getText(); 2677 int start = editable.getSpanStart(span); 2678 int end = editable.getSpanEnd(span); 2679 if (start >= 0 && end >= 0) { 2680 sendEasySpanNotification(EasyEditSpan.TEXT_DELETED, span); 2681 mTextView.deleteText_internal(start, end); 2682 } 2683 editable.removeSpan(span); 2684 } 2685 }); 2686 2687 if (mTextView.getWindowVisibility() != View.VISIBLE) { 2688 // The window is not visible yet, ignore the text change. 2689 return; 2690 } 2691 2692 if (mTextView.getLayout() == null) { 2693 // The view has not been laid out yet, ignore the text change 2694 return; 2695 } 2696 2697 if (extractedTextModeWillBeStarted()) { 2698 // The input is in extract mode. Do not handle the easy edit in 2699 // the original TextView, as the ExtractEditText will do 2700 return; 2701 } 2702 2703 mPopupWindow.show(); 2704 mTextView.removeCallbacks(mHidePopup); 2705 mTextView.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS); 2706 } 2707 } 2708 2709 @Override 2710 public void onSpanRemoved(Spannable text, Object span, int start, int end) { 2711 if (isNonIntermediateSelectionSpan(text, span)) { 2712 sendUpdateSelection(); 2713 } else if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { 2714 hide(); 2715 } 2716 } 2717 2718 @Override 2719 public void onSpanChanged(Spannable text, Object span, int previousStart, int previousEnd, 2720 int newStart, int newEnd) { 2721 if (isNonIntermediateSelectionSpan(text, span)) { 2722 sendUpdateSelection(); 2723 } else if (mPopupWindow != null && span instanceof EasyEditSpan) { 2724 EasyEditSpan easyEditSpan = (EasyEditSpan) span; 2725 sendEasySpanNotification(EasyEditSpan.TEXT_MODIFIED, easyEditSpan); 2726 text.removeSpan(easyEditSpan); 2727 } 2728 } 2729 2730 public void hide() { 2731 if (mPopupWindow != null) { 2732 mPopupWindow.hide(); 2733 mTextView.removeCallbacks(mHidePopup); 2734 } 2735 } 2736 2737 private void sendEasySpanNotification(int textChangedType, EasyEditSpan span) { 2738 try { 2739 PendingIntent pendingIntent = span.getPendingIntent(); 2740 if (pendingIntent != null) { 2741 Intent intent = new Intent(); 2742 intent.putExtra(EasyEditSpan.EXTRA_TEXT_CHANGED_TYPE, textChangedType); 2743 pendingIntent.send(mTextView.getContext(), 0, intent); 2744 } 2745 } catch (CanceledException e) { 2746 // This should not happen, as we should try to send the intent only once. 2747 Log.w(TAG, "PendingIntent for notification cannot be sent", e); 2748 } 2749 } 2750 } 2751 2752 /** 2753 * Listens for the delete event triggered by {@link EasyEditPopupWindow}. 2754 */ 2755 private interface EasyEditDeleteListener { 2756 2757 /** 2758 * Clicks the delete pop-up. 2759 */ 2760 void onDeleteClick(EasyEditSpan span); 2761 } 2762 2763 /** 2764 * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled 2765 * by {@link SpanController}. 2766 */ 2767 private class EasyEditPopupWindow extends PinnedPopupWindow 2768 implements OnClickListener { 2769 private static final int POPUP_TEXT_LAYOUT = 2770 com.android.internal.R.layout.text_edit_action_popup_text; 2771 private TextView mDeleteTextView; 2772 private EasyEditSpan mEasyEditSpan; 2773 private EasyEditDeleteListener mOnDeleteListener; 2774 2775 @Override 2776 protected void createPopupWindow() { 2777 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 2778 com.android.internal.R.attr.textSelectHandleWindowStyle); 2779 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 2780 mPopupWindow.setClippingEnabled(true); 2781 } 2782 2783 @Override 2784 protected void initContentView() { 2785 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 2786 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 2787 mContentView = linearLayout; 2788 mContentView.setBackgroundResource( 2789 com.android.internal.R.drawable.text_edit_side_paste_window); 2790 2791 LayoutInflater inflater = (LayoutInflater)mTextView.getContext(). 2792 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2793 2794 LayoutParams wrapContent = new LayoutParams( 2795 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 2796 2797 mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2798 mDeleteTextView.setLayoutParams(wrapContent); 2799 mDeleteTextView.setText(com.android.internal.R.string.delete); 2800 mDeleteTextView.setOnClickListener(this); 2801 mContentView.addView(mDeleteTextView); 2802 } 2803 2804 public void setEasyEditSpan(EasyEditSpan easyEditSpan) { 2805 mEasyEditSpan = easyEditSpan; 2806 } 2807 2808 private void setOnDeleteListener(EasyEditDeleteListener listener) { 2809 mOnDeleteListener = listener; 2810 } 2811 2812 @Override 2813 public void onClick(View view) { 2814 if (view == mDeleteTextView 2815 && mEasyEditSpan != null && mEasyEditSpan.isDeleteEnabled() 2816 && mOnDeleteListener != null) { 2817 mOnDeleteListener.onDeleteClick(mEasyEditSpan); 2818 } 2819 } 2820 2821 @Override 2822 public void hide() { 2823 if (mEasyEditSpan != null) { 2824 mEasyEditSpan.setDeleteEnabled(false); 2825 } 2826 mOnDeleteListener = null; 2827 super.hide(); 2828 } 2829 2830 @Override 2831 protected int getTextOffset() { 2832 // Place the pop-up at the end of the span 2833 Editable editable = (Editable) mTextView.getText(); 2834 return editable.getSpanEnd(mEasyEditSpan); 2835 } 2836 2837 @Override 2838 protected int getVerticalLocalPosition(int line) { 2839 return mTextView.getLayout().getLineBottom(line); 2840 } 2841 2842 @Override 2843 protected int clipVertically(int positionY) { 2844 // As we display the pop-up below the span, no vertical clipping is required. 2845 return positionY; 2846 } 2847 } 2848 2849 private class PositionListener implements ViewTreeObserver.OnPreDrawListener { 2850 // 3 handles 2851 // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others) 2852 // 1 CursorAnchorInfoNotifier 2853 private final int MAXIMUM_NUMBER_OF_LISTENERS = 7; 2854 private TextViewPositionListener[] mPositionListeners = 2855 new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS]; 2856 private boolean mCanMove[] = new boolean[MAXIMUM_NUMBER_OF_LISTENERS]; 2857 private boolean mPositionHasChanged = true; 2858 // Absolute position of the TextView with respect to its parent window 2859 private int mPositionX, mPositionY; 2860 private int mNumberOfListeners; 2861 private boolean mScrollHasChanged; 2862 final int[] mTempCoords = new int[2]; 2863 2864 public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) { 2865 if (mNumberOfListeners == 0) { 2866 updatePosition(); 2867 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2868 vto.addOnPreDrawListener(this); 2869 } 2870 2871 int emptySlotIndex = -1; 2872 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2873 TextViewPositionListener listener = mPositionListeners[i]; 2874 if (listener == positionListener) { 2875 return; 2876 } else if (emptySlotIndex < 0 && listener == null) { 2877 emptySlotIndex = i; 2878 } 2879 } 2880 2881 mPositionListeners[emptySlotIndex] = positionListener; 2882 mCanMove[emptySlotIndex] = canMove; 2883 mNumberOfListeners++; 2884 } 2885 2886 public void removeSubscriber(TextViewPositionListener positionListener) { 2887 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2888 if (mPositionListeners[i] == positionListener) { 2889 mPositionListeners[i] = null; 2890 mNumberOfListeners--; 2891 break; 2892 } 2893 } 2894 2895 if (mNumberOfListeners == 0) { 2896 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2897 vto.removeOnPreDrawListener(this); 2898 } 2899 } 2900 2901 public int getPositionX() { 2902 return mPositionX; 2903 } 2904 2905 public int getPositionY() { 2906 return mPositionY; 2907 } 2908 2909 @Override 2910 public boolean onPreDraw() { 2911 updatePosition(); 2912 2913 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2914 if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) { 2915 TextViewPositionListener positionListener = mPositionListeners[i]; 2916 if (positionListener != null) { 2917 positionListener.updatePosition(mPositionX, mPositionY, 2918 mPositionHasChanged, mScrollHasChanged); 2919 } 2920 } 2921 } 2922 2923 mScrollHasChanged = false; 2924 return true; 2925 } 2926 2927 private void updatePosition() { 2928 mTextView.getLocationInWindow(mTempCoords); 2929 2930 mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY; 2931 2932 mPositionX = mTempCoords[0]; 2933 mPositionY = mTempCoords[1]; 2934 } 2935 2936 public void onScrollChanged() { 2937 mScrollHasChanged = true; 2938 } 2939 } 2940 2941 private abstract class PinnedPopupWindow implements TextViewPositionListener { 2942 protected PopupWindow mPopupWindow; 2943 protected ViewGroup mContentView; 2944 int mPositionX, mPositionY; 2945 int mClippingLimitLeft, mClippingLimitRight; 2946 2947 protected abstract void createPopupWindow(); 2948 protected abstract void initContentView(); 2949 protected abstract int getTextOffset(); 2950 protected abstract int getVerticalLocalPosition(int line); 2951 protected abstract int clipVertically(int positionY); 2952 2953 public PinnedPopupWindow() { 2954 createPopupWindow(); 2955 2956 mPopupWindow.setWindowLayoutType( 2957 WindowManager.LayoutParams.TYPE_APPLICATION_ABOVE_SUB_PANEL); 2958 mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 2959 mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 2960 2961 initContentView(); 2962 2963 LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2964 ViewGroup.LayoutParams.WRAP_CONTENT); 2965 mContentView.setLayoutParams(wrapContent); 2966 2967 mPopupWindow.setContentView(mContentView); 2968 } 2969 2970 public void show() { 2971 getPositionListener().addSubscriber(this, false /* offset is fixed */); 2972 2973 computeLocalPosition(); 2974 2975 final PositionListener positionListener = getPositionListener(); 2976 updatePosition(positionListener.getPositionX(), positionListener.getPositionY()); 2977 } 2978 2979 protected void measureContent() { 2980 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2981 mContentView.measure( 2982 View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, 2983 View.MeasureSpec.AT_MOST), 2984 View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, 2985 View.MeasureSpec.AT_MOST)); 2986 } 2987 2988 /* The popup window will be horizontally centered on the getTextOffset() and vertically 2989 * positioned according to viewportToContentHorizontalOffset. 2990 * 2991 * This method assumes that mContentView has properly been measured from its content. */ 2992 private void computeLocalPosition() { 2993 measureContent(); 2994 final int width = mContentView.getMeasuredWidth(); 2995 final int offset = getTextOffset(); 2996 mPositionX = (int) (mTextView.getLayout().getPrimaryHorizontal(offset) - width / 2.0f); 2997 mPositionX += mTextView.viewportToContentHorizontalOffset(); 2998 2999 final int line = mTextView.getLayout().getLineForOffset(offset); 3000 mPositionY = getVerticalLocalPosition(line); 3001 mPositionY += mTextView.viewportToContentVerticalOffset(); 3002 } 3003 3004 private void updatePosition(int parentPositionX, int parentPositionY) { 3005 int positionX = parentPositionX + mPositionX; 3006 int positionY = parentPositionY + mPositionY; 3007 3008 positionY = clipVertically(positionY); 3009 3010 // Horizontal clipping 3011 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3012 final int width = mContentView.getMeasuredWidth(); 3013 positionX = Math.min( 3014 displayMetrics.widthPixels - width + mClippingLimitRight, positionX); 3015 positionX = Math.max(-mClippingLimitLeft, positionX); 3016 3017 if (isShowing()) { 3018 mPopupWindow.update(positionX, positionY, -1, -1); 3019 } else { 3020 mPopupWindow.showAtLocation(mTextView, Gravity.NO_GRAVITY, 3021 positionX, positionY); 3022 } 3023 } 3024 3025 public void hide() { 3026 if (!isShowing()) { 3027 return; 3028 } 3029 mPopupWindow.dismiss(); 3030 getPositionListener().removeSubscriber(this); 3031 } 3032 3033 @Override 3034 public void updatePosition(int parentPositionX, int parentPositionY, 3035 boolean parentPositionChanged, boolean parentScrolled) { 3036 // Either parentPositionChanged or parentScrolled is true, check if still visible 3037 if (isShowing() && isOffsetVisible(getTextOffset())) { 3038 if (parentScrolled) computeLocalPosition(); 3039 updatePosition(parentPositionX, parentPositionY); 3040 } else { 3041 hide(); 3042 } 3043 } 3044 3045 public boolean isShowing() { 3046 return mPopupWindow.isShowing(); 3047 } 3048 } 3049 3050 private static class SuggestionInfo { 3051 // Range of actual suggestion within mText 3052 int mSuggestionStart, mSuggestionEnd; 3053 3054 // The SuggestionSpan that this TextView represents 3055 @Nullable 3056 SuggestionSpan mSuggestionSpan; 3057 3058 // The SuggestionSpan start position 3059 int mSuggestionSpanStart; 3060 3061 // The SuggestionSpan end position 3062 int mSuggestionSpanEnd; 3063 3064 // The index of this suggestion inside suggestionSpan 3065 int mSuggestionIndex; 3066 3067 final SpannableStringBuilder mText = new SpannableStringBuilder(); 3068 3069 void clear() { 3070 mSuggestionSpan = null; 3071 mText.clear(); 3072 } 3073 } 3074 3075 private class SuggestionHelper { 3076 private final Comparator<SuggestionSpan> mSuggestionSpanComparator = 3077 new SuggestionSpanComparator(); 3078 private final HashMap<SuggestionSpan, Integer> mSpansLengths = 3079 new HashMap<SuggestionSpan, Integer>(); 3080 3081 private class SuggestionSpanComparator implements Comparator<SuggestionSpan> { 3082 public int compare(SuggestionSpan span1, SuggestionSpan span2) { 3083 final int flag1 = span1.getFlags(); 3084 final int flag2 = span2.getFlags(); 3085 if (flag1 != flag2) { 3086 // The order here should match what is used in updateDrawState 3087 final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 3088 final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 3089 final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0; 3090 final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0; 3091 if (easy1 && !misspelled1) return -1; 3092 if (easy2 && !misspelled2) return 1; 3093 if (misspelled1) return -1; 3094 if (misspelled2) return 1; 3095 } 3096 3097 return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue(); 3098 } 3099 } 3100 3101 /** 3102 * Returns the suggestion spans that cover the current cursor position. The suggestion 3103 * spans are sorted according to the length of text that they are attached to. 3104 */ 3105 private SuggestionSpan[] getSortedSuggestionSpans() { 3106 int pos = mTextView.getSelectionStart(); 3107 Spannable spannable = (Spannable) mTextView.getText(); 3108 SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class); 3109 3110 mSpansLengths.clear(); 3111 for (SuggestionSpan suggestionSpan : suggestionSpans) { 3112 int start = spannable.getSpanStart(suggestionSpan); 3113 int end = spannable.getSpanEnd(suggestionSpan); 3114 mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start)); 3115 } 3116 3117 // The suggestions are sorted according to their types (easy correction first, then 3118 // misspelled) and to the length of the text that they cover (shorter first). 3119 Arrays.sort(suggestionSpans, mSuggestionSpanComparator); 3120 mSpansLengths.clear(); 3121 3122 return suggestionSpans; 3123 } 3124 3125 /** 3126 * Gets the SuggestionInfo list that contains suggestion information at the current cursor 3127 * position. 3128 * 3129 * @param suggestionInfos SuggestionInfo array the results will be set. 3130 * @return the number of suggestions actually fetched. 3131 */ 3132 public int getSuggestionInfo(SuggestionInfo[] suggestionInfos) { 3133 final Spannable spannable = (Spannable) mTextView.getText(); 3134 final SuggestionSpan[] suggestionSpans = getSortedSuggestionSpans(); 3135 final int nbSpans = suggestionSpans.length; 3136 if (nbSpans == 0) return 0; 3137 3138 int numberOfSuggestions = 0; 3139 for (int spanIndex = 0; spanIndex < nbSpans; spanIndex++) { 3140 final SuggestionSpan suggestionSpan = suggestionSpans[spanIndex]; 3141 final int spanStart = spannable.getSpanStart(suggestionSpan); 3142 final int spanEnd = spannable.getSpanEnd(suggestionSpan); 3143 3144 final String[] suggestions = suggestionSpan.getSuggestions(); 3145 final int nbSuggestions = suggestions.length; 3146 for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) { 3147 final String suggestion = suggestions[suggestionIndex]; 3148 boolean suggestionIsDuplicate = false; 3149 for (int i = 0; i < numberOfSuggestions; i++) { 3150 if (suggestionInfos[i].mText.toString().equals(suggestion)) { 3151 final SuggestionSpan otherSuggestionSpan = 3152 suggestionInfos[i].mSuggestionSpan; 3153 final int otherSpanStart = spannable.getSpanStart(otherSuggestionSpan); 3154 final int otherSpanEnd = spannable.getSpanEnd(otherSuggestionSpan); 3155 if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) { 3156 suggestionIsDuplicate = true; 3157 break; 3158 } 3159 } 3160 } 3161 3162 if (suggestionIsDuplicate) { 3163 continue; 3164 } 3165 SuggestionInfo suggestionInfo = suggestionInfos[numberOfSuggestions]; 3166 suggestionInfo.mSuggestionSpan = suggestionSpan; 3167 suggestionInfo.mSuggestionIndex = suggestionIndex; 3168 suggestionInfo.mSuggestionStart = 0; 3169 suggestionInfo.mSuggestionEnd = suggestion.length(); 3170 suggestionInfo.mSuggestionSpanStart = spanStart; 3171 suggestionInfo.mSuggestionSpanEnd = spanEnd; 3172 suggestionInfo.mText.replace(0, suggestionInfo.mText.length(), suggestion); 3173 numberOfSuggestions++; 3174 if (numberOfSuggestions >= suggestionInfos.length) { 3175 return numberOfSuggestions; 3176 } 3177 } 3178 } 3179 return numberOfSuggestions; 3180 } 3181 } 3182 3183 @VisibleForTesting 3184 public class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener { 3185 private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE; 3186 3187 // Key of intent extras for inserting new word into user dictionary. 3188 private static final String USER_DICTIONARY_EXTRA_WORD = "word"; 3189 private static final String USER_DICTIONARY_EXTRA_LOCALE = "locale"; 3190 3191 private SuggestionInfo[] mSuggestionInfos; 3192 private int mNumberOfSuggestions; 3193 private boolean mCursorWasVisibleBeforeSuggestions; 3194 private boolean mIsShowingUp = false; 3195 private SuggestionAdapter mSuggestionsAdapter; 3196 private final TextAppearanceSpan mHighlightSpan = new TextAppearanceSpan( 3197 mTextView.getContext(), mTextView.mTextEditSuggestionHighlightStyle); 3198 private TextView mAddToDictionaryButton; 3199 private TextView mDeleteButton; 3200 private ListView mSuggestionListView; 3201 private SuggestionSpan mMisspelledSpan; 3202 private int mContainerMarginWidth; 3203 private int mContainerMarginTop; 3204 3205 private class CustomPopupWindow extends PopupWindow { 3206 @Override 3207 public void dismiss() { 3208 if (!isShowing()) { 3209 return; 3210 } 3211 super.dismiss(); 3212 getPositionListener().removeSubscriber(SuggestionsPopupWindow.this); 3213 3214 // Safe cast since show() checks that mTextView.getText() is an Editable 3215 ((Spannable) mTextView.getText()).removeSpan(mSuggestionRangeSpan); 3216 3217 mTextView.setCursorVisible(mCursorWasVisibleBeforeSuggestions); 3218 if (hasInsertionController() && !extractedTextModeWillBeStarted()) { 3219 getInsertionController().show(); 3220 } 3221 } 3222 } 3223 3224 public SuggestionsPopupWindow() { 3225 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 3226 } 3227 3228 @Override 3229 protected void createPopupWindow() { 3230 mPopupWindow = new CustomPopupWindow(); 3231 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 3232 mPopupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT)); 3233 mPopupWindow.setFocusable(true); 3234 mPopupWindow.setClippingEnabled(false); 3235 } 3236 3237 @Override 3238 protected void initContentView() { 3239 final LayoutInflater inflater = (LayoutInflater) mTextView.getContext(). 3240 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 3241 final ViewGroup relativeLayout = (ViewGroup) inflater.inflate( 3242 mTextView.mTextEditSuggestionContainerLayout, null); 3243 3244 final LinearLayout suggestionWindowContainer = 3245 (LinearLayout) relativeLayout.findViewById( 3246 com.android.internal.R.id.suggestionWindowContainer); 3247 ViewGroup.MarginLayoutParams lp = 3248 (ViewGroup.MarginLayoutParams) suggestionWindowContainer.getLayoutParams(); 3249 mContainerMarginWidth = lp.leftMargin + lp.rightMargin; 3250 mContainerMarginTop = lp.topMargin; 3251 mClippingLimitLeft = lp.leftMargin; 3252 mClippingLimitRight = lp.rightMargin; 3253 3254 mSuggestionListView = (ListView) relativeLayout.findViewById( 3255 com.android.internal.R.id.suggestionContainer); 3256 3257 mSuggestionsAdapter = new SuggestionAdapter(); 3258 mSuggestionListView.setAdapter(mSuggestionsAdapter); 3259 mSuggestionListView.setOnItemClickListener(this); 3260 3261 // Inflate the suggestion items once and for all. 3262 mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS]; 3263 for (int i = 0; i < mSuggestionInfos.length; i++) { 3264 mSuggestionInfos[i] = new SuggestionInfo(); 3265 } 3266 3267 mContentView = relativeLayout; 3268 3269 mAddToDictionaryButton = (TextView) relativeLayout.findViewById( 3270 com.android.internal.R.id.addToDictionaryButton); 3271 mAddToDictionaryButton.setOnClickListener(new View.OnClickListener() { 3272 public void onClick(View v) { 3273 final Editable editable = (Editable) mTextView.getText(); 3274 final int spanStart = editable.getSpanStart(mMisspelledSpan); 3275 final int spanEnd = editable.getSpanEnd(mMisspelledSpan); 3276 final String originalText = TextUtils.substring(editable, spanStart, spanEnd); 3277 3278 final Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT); 3279 intent.putExtra(USER_DICTIONARY_EXTRA_WORD, originalText); 3280 intent.putExtra(USER_DICTIONARY_EXTRA_LOCALE, 3281 mTextView.getTextServicesLocale().toString()); 3282 intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); 3283 mTextView.getContext().startActivity(intent); 3284 // There is no way to know if the word was indeed added. Re-check. 3285 // TODO The ExtractEditText should remove the span in the original text instead 3286 editable.removeSpan(mMisspelledSpan); 3287 Selection.setSelection(editable, spanEnd); 3288 updateSpellCheckSpans(spanStart, spanEnd, false); 3289 hideWithCleanUp(); 3290 } 3291 }); 3292 3293 mDeleteButton = (TextView) relativeLayout.findViewById( 3294 com.android.internal.R.id.deleteButton); 3295 mDeleteButton.setOnClickListener(new View.OnClickListener() { 3296 public void onClick(View v) { 3297 final Editable editable = (Editable) mTextView.getText(); 3298 3299 final int spanUnionStart = editable.getSpanStart(mSuggestionRangeSpan); 3300 int spanUnionEnd = editable.getSpanEnd(mSuggestionRangeSpan); 3301 if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) { 3302 // Do not leave two adjacent spaces after deletion, or one at beginning of 3303 // text 3304 if (spanUnionEnd < editable.length() && 3305 Character.isSpaceChar(editable.charAt(spanUnionEnd)) && 3306 (spanUnionStart == 0 || 3307 Character.isSpaceChar(editable.charAt(spanUnionStart - 1)))) { 3308 spanUnionEnd = spanUnionEnd + 1; 3309 } 3310 mTextView.deleteText_internal(spanUnionStart, spanUnionEnd); 3311 } 3312 hideWithCleanUp(); 3313 } 3314 }); 3315 3316 } 3317 3318 public boolean isShowingUp() { 3319 return mIsShowingUp; 3320 } 3321 3322 public void onParentLostFocus() { 3323 mIsShowingUp = false; 3324 } 3325 3326 private class SuggestionAdapter extends BaseAdapter { 3327 private LayoutInflater mInflater = (LayoutInflater) mTextView.getContext(). 3328 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 3329 3330 @Override 3331 public int getCount() { 3332 return mNumberOfSuggestions; 3333 } 3334 3335 @Override 3336 public Object getItem(int position) { 3337 return mSuggestionInfos[position]; 3338 } 3339 3340 @Override 3341 public long getItemId(int position) { 3342 return position; 3343 } 3344 3345 @Override 3346 public View getView(int position, View convertView, ViewGroup parent) { 3347 TextView textView = (TextView) convertView; 3348 3349 if (textView == null) { 3350 textView = (TextView) mInflater.inflate(mTextView.mTextEditSuggestionItemLayout, 3351 parent, false); 3352 } 3353 3354 final SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 3355 textView.setText(suggestionInfo.mText); 3356 return textView; 3357 } 3358 } 3359 3360 @VisibleForTesting 3361 public ViewGroup getContentViewForTesting() { 3362 return mContentView; 3363 } 3364 3365 @Override 3366 public void show() { 3367 if (!(mTextView.getText() instanceof Editable)) return; 3368 if (extractedTextModeWillBeStarted()) { 3369 return; 3370 } 3371 3372 if (updateSuggestions()) { 3373 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 3374 mTextView.setCursorVisible(false); 3375 mIsShowingUp = true; 3376 super.show(); 3377 } 3378 } 3379 3380 @Override 3381 protected void measureContent() { 3382 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3383 final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec( 3384 displayMetrics.widthPixels, View.MeasureSpec.AT_MOST); 3385 final int verticalMeasure = View.MeasureSpec.makeMeasureSpec( 3386 displayMetrics.heightPixels, View.MeasureSpec.AT_MOST); 3387 3388 int width = 0; 3389 View view = null; 3390 for (int i = 0; i < mNumberOfSuggestions; i++) { 3391 view = mSuggestionsAdapter.getView(i, view, mContentView); 3392 view.getLayoutParams().width = LayoutParams.WRAP_CONTENT; 3393 view.measure(horizontalMeasure, verticalMeasure); 3394 width = Math.max(width, view.getMeasuredWidth()); 3395 } 3396 3397 if (mAddToDictionaryButton.getVisibility() != View.GONE) { 3398 mAddToDictionaryButton.measure(horizontalMeasure, verticalMeasure); 3399 width = Math.max(width, mAddToDictionaryButton.getMeasuredWidth()); 3400 } 3401 3402 mDeleteButton.measure(horizontalMeasure, verticalMeasure); 3403 width = Math.max(width, mDeleteButton.getMeasuredWidth()); 3404 3405 width += mContainerMarginWidth; 3406 3407 // Enforce the width based on actual text widths 3408 mContentView.measure( 3409 View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY), 3410 verticalMeasure); 3411 3412 Drawable popupBackground = mPopupWindow.getBackground(); 3413 if (popupBackground != null) { 3414 if (mTempRect == null) mTempRect = new Rect(); 3415 popupBackground.getPadding(mTempRect); 3416 width += mTempRect.left + mTempRect.right; 3417 } 3418 mSuggestionListView.getLayoutParams().width = width; 3419 mPopupWindow.setWidth(width); 3420 } 3421 3422 @Override 3423 protected int getTextOffset() { 3424 return mTextView.getSelectionStart(); 3425 } 3426 3427 @Override 3428 protected int getVerticalLocalPosition(int line) { 3429 return mTextView.getLayout().getLineBottom(line) - mContainerMarginTop; 3430 } 3431 3432 @Override 3433 protected int clipVertically(int positionY) { 3434 final int height = mContentView.getMeasuredHeight(); 3435 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3436 return Math.min(positionY, displayMetrics.heightPixels - height); 3437 } 3438 3439 private void hideWithCleanUp() { 3440 for (final SuggestionInfo info : mSuggestionInfos) { 3441 info.clear(); 3442 } 3443 mMisspelledSpan = null; 3444 hide(); 3445 } 3446 3447 private boolean updateSuggestions() { 3448 Spannable spannable = (Spannable) mTextView.getText(); 3449 mNumberOfSuggestions = 3450 mSuggestionHelper.getSuggestionInfo(mSuggestionInfos); 3451 if (mNumberOfSuggestions == 0) { 3452 return false; 3453 } 3454 3455 int spanUnionStart = mTextView.getText().length(); 3456 int spanUnionEnd = 0; 3457 3458 mMisspelledSpan = null; 3459 for (int i = 0; i < mNumberOfSuggestions; i++) { 3460 final SuggestionInfo suggestionInfo = mSuggestionInfos[i]; 3461 final SuggestionSpan suggestionSpan = suggestionInfo.mSuggestionSpan; 3462 if ((suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) { 3463 mMisspelledSpan = suggestionSpan; 3464 } 3465 spanUnionStart = Math.min(spanUnionStart, suggestionInfo.mSuggestionSpanStart); 3466 spanUnionEnd = Math.max(spanUnionEnd, suggestionInfo.mSuggestionSpanEnd); 3467 } 3468 3469 for (int i = 0; i < mNumberOfSuggestions; i++) { 3470 highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd); 3471 } 3472 3473 // Make "Add to dictionary" item visible if there is a span with the misspelled flag 3474 int addToDictionaryButtonVisibility = View.GONE; 3475 if (mMisspelledSpan != null) { 3476 final int misspelledStart = spannable.getSpanStart(mMisspelledSpan); 3477 final int misspelledEnd = spannable.getSpanEnd(mMisspelledSpan); 3478 if (misspelledStart >= 0 && misspelledEnd > misspelledStart) { 3479 addToDictionaryButtonVisibility = View.VISIBLE; 3480 } 3481 } 3482 mAddToDictionaryButton.setVisibility(addToDictionaryButtonVisibility); 3483 3484 if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan(); 3485 final int underlineColor = mSuggestionInfos[0].mSuggestionSpan.getUnderlineColor(); 3486 if (underlineColor == 0) { 3487 // Fallback on the default highlight color when the first span does not provide one 3488 mSuggestionRangeSpan.setBackgroundColor(mTextView.mHighlightColor); 3489 } else { 3490 final float BACKGROUND_TRANSPARENCY = 0.4f; 3491 final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY); 3492 mSuggestionRangeSpan.setBackgroundColor( 3493 (underlineColor & 0x00FFFFFF) + (newAlpha << 24)); 3494 } 3495 spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd, 3496 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 3497 3498 mSuggestionsAdapter.notifyDataSetChanged(); 3499 return true; 3500 } 3501 3502 private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart, 3503 int unionEnd) { 3504 final Spannable text = (Spannable) mTextView.getText(); 3505 final int spanStart = suggestionInfo.mSuggestionSpanStart; 3506 final int spanEnd = suggestionInfo.mSuggestionSpanEnd; 3507 3508 // Adjust the start/end of the suggestion span 3509 suggestionInfo.mSuggestionStart = spanStart - unionStart; 3510 suggestionInfo.mSuggestionEnd = suggestionInfo.mSuggestionStart 3511 + suggestionInfo.mText.length(); 3512 3513 suggestionInfo.mText.setSpan(mHighlightSpan, 0, suggestionInfo.mText.length(), 3514 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 3515 3516 // Add the text before and after the span. 3517 final String textAsString = text.toString(); 3518 suggestionInfo.mText.insert(0, textAsString.substring(unionStart, spanStart)); 3519 suggestionInfo.mText.append(textAsString.substring(spanEnd, unionEnd)); 3520 } 3521 3522 @Override 3523 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 3524 SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 3525 replaceWithSuggestion(suggestionInfo); 3526 hideWithCleanUp(); 3527 } 3528 } 3529 3530 /** 3531 * An ActionMode Callback class that is used to provide actions while in text insertion or 3532 * selection mode. 3533 * 3534 * The default callback provides a subset of Select All, Cut, Copy, Paste, Share and Replace 3535 * actions, depending on which of these this TextView supports and the current selection. 3536 */ 3537 private class TextActionModeCallback extends ActionMode.Callback2 { 3538 private final Path mSelectionPath = new Path(); 3539 private final RectF mSelectionBounds = new RectF(); 3540 private final boolean mHasSelection; 3541 3542 private int mHandleHeight; 3543 3544 public TextActionModeCallback(boolean hasSelection) { 3545 mHasSelection = hasSelection; 3546 if (mHasSelection) { 3547 SelectionModifierCursorController selectionController = getSelectionController(); 3548 if (selectionController.mStartHandle == null) { 3549 // As these are for initializing selectionController, hide() must be called. 3550 selectionController.initDrawables(); 3551 selectionController.initHandles(); 3552 selectionController.hide(); 3553 } 3554 mHandleHeight = Math.max( 3555 mSelectHandleLeft.getMinimumHeight(), 3556 mSelectHandleRight.getMinimumHeight()); 3557 } else { 3558 InsertionPointCursorController insertionController = getInsertionController(); 3559 if (insertionController != null) { 3560 insertionController.getHandle(); 3561 mHandleHeight = mSelectHandleCenter.getMinimumHeight(); 3562 } 3563 } 3564 } 3565 3566 @Override 3567 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 3568 mode.setTitle(null); 3569 mode.setSubtitle(null); 3570 mode.setTitleOptionalHint(true); 3571 populateMenuWithItems(menu); 3572 3573 Callback customCallback = getCustomCallback(); 3574 if (customCallback != null) { 3575 if (!customCallback.onCreateActionMode(mode, menu)) { 3576 // The custom mode can choose to cancel the action mode, dismiss selection. 3577 Selection.setSelection((Spannable) mTextView.getText(), 3578 mTextView.getSelectionEnd()); 3579 return false; 3580 } 3581 } 3582 3583 if (mTextView.canProcessText()) { 3584 mProcessTextIntentActionsHandler.onInitializeMenu(menu); 3585 } 3586 3587 if (menu.hasVisibleItems() || mode.getCustomView() != null) { 3588 return true; 3589 } else { 3590 return false; 3591 } 3592 } 3593 3594 private Callback getCustomCallback() { 3595 return mHasSelection 3596 ? mCustomSelectionActionModeCallback 3597 : mCustomInsertionActionModeCallback; 3598 } 3599 3600 private void populateMenuWithItems(Menu menu) { 3601 if (mTextView.canCut()) { 3602 menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, 3603 com.android.internal.R.string.cut). 3604 setAlphabeticShortcut('x'). 3605 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3606 } 3607 3608 if (mTextView.canCopy()) { 3609 menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, 3610 com.android.internal.R.string.copy). 3611 setAlphabeticShortcut('c'). 3612 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3613 } 3614 3615 if (mTextView.canPaste()) { 3616 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, 3617 com.android.internal.R.string.paste). 3618 setAlphabeticShortcut('v'). 3619 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3620 } 3621 3622 if (mTextView.canShare()) { 3623 menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, 3624 com.android.internal.R.string.share). 3625 setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3626 } 3627 3628 updateSelectAllItem(menu); 3629 updateReplaceItem(menu); 3630 } 3631 3632 @Override 3633 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 3634 updateSelectAllItem(menu); 3635 updateReplaceItem(menu); 3636 3637 Callback customCallback = getCustomCallback(); 3638 if (customCallback != null) { 3639 return customCallback.onPrepareActionMode(mode, menu); 3640 } 3641 return true; 3642 } 3643 3644 private void updateSelectAllItem(Menu menu) { 3645 boolean canSelectAll = mTextView.canSelectAllText(); 3646 boolean selectAllItemExists = menu.findItem(TextView.ID_SELECT_ALL) != null; 3647 if (canSelectAll && !selectAllItemExists) { 3648 menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, 3649 com.android.internal.R.string.selectAll) 3650 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3651 } else if (!canSelectAll && selectAllItemExists) { 3652 menu.removeItem(TextView.ID_SELECT_ALL); 3653 } 3654 } 3655 3656 private void updateReplaceItem(Menu menu) { 3657 boolean canReplace = mTextView.isSuggestionsEnabled() && shouldOfferToShowSuggestions(); 3658 boolean replaceItemExists = menu.findItem(TextView.ID_REPLACE) != null; 3659 if (canReplace && !replaceItemExists) { 3660 menu.add(Menu.NONE, TextView.ID_REPLACE, MENU_ITEM_ORDER_REPLACE, 3661 com.android.internal.R.string.replace) 3662 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3663 } else if (!canReplace && replaceItemExists) { 3664 menu.removeItem(TextView.ID_REPLACE); 3665 } 3666 } 3667 3668 @Override 3669 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 3670 if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { 3671 return true; 3672 } 3673 Callback customCallback = getCustomCallback(); 3674 if (customCallback != null && customCallback.onActionItemClicked(mode, item)) { 3675 return true; 3676 } 3677 return mTextView.onTextContextMenuItem(item.getItemId()); 3678 } 3679 3680 @Override 3681 public void onDestroyActionMode(ActionMode mode) { 3682 Callback customCallback = getCustomCallback(); 3683 if (customCallback != null) { 3684 customCallback.onDestroyActionMode(mode); 3685 } 3686 3687 if (!mPreserveSelection) { 3688 /* 3689 * Leave current selection when we tentatively destroy action mode for the 3690 * selection. If we're detaching from a window, we'll bring back the selection 3691 * mode when (if) we get reattached. 3692 */ 3693 Selection.setSelection((Spannable) mTextView.getText(), 3694 mTextView.getSelectionEnd()); 3695 } 3696 3697 if (mSelectionModifierCursorController != null) { 3698 mSelectionModifierCursorController.hide(); 3699 } 3700 3701 mTextActionMode = null; 3702 } 3703 3704 @Override 3705 public void onGetContentRect(ActionMode mode, View view, Rect outRect) { 3706 if (!view.equals(mTextView) || mTextView.getLayout() == null) { 3707 super.onGetContentRect(mode, view, outRect); 3708 return; 3709 } 3710 if (mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 3711 // We have a selection. 3712 mSelectionPath.reset(); 3713 mTextView.getLayout().getSelectionPath( 3714 mTextView.getSelectionStart(), mTextView.getSelectionEnd(), mSelectionPath); 3715 mSelectionPath.computeBounds(mSelectionBounds, true); 3716 mSelectionBounds.bottom += mHandleHeight; 3717 } else if (mCursorCount == 2) { 3718 // We have a split cursor. In this case, we take the rectangle that includes both 3719 // parts of the cursor to ensure we don't obscure either of them. 3720 Rect firstCursorBounds = mCursorDrawable[0].getBounds(); 3721 Rect secondCursorBounds = mCursorDrawable[1].getBounds(); 3722 mSelectionBounds.set( 3723 Math.min(firstCursorBounds.left, secondCursorBounds.left), 3724 Math.min(firstCursorBounds.top, secondCursorBounds.top), 3725 Math.max(firstCursorBounds.right, secondCursorBounds.right), 3726 Math.max(firstCursorBounds.bottom, secondCursorBounds.bottom) 3727 + mHandleHeight); 3728 } else { 3729 // We have a single cursor. 3730 Layout layout = getActiveLayout(); 3731 int line = layout.getLineForOffset(mTextView.getSelectionStart()); 3732 float primaryHorizontal = 3733 layout.getPrimaryHorizontal(mTextView.getSelectionStart()); 3734 mSelectionBounds.set( 3735 primaryHorizontal, 3736 layout.getLineTop(line), 3737 primaryHorizontal, 3738 layout.getLineTop(line + 1) + mHandleHeight); 3739 } 3740 // Take TextView's padding and scroll into account. 3741 int textHorizontalOffset = mTextView.viewportToContentHorizontalOffset(); 3742 int textVerticalOffset = mTextView.viewportToContentVerticalOffset(); 3743 outRect.set( 3744 (int) Math.floor(mSelectionBounds.left + textHorizontalOffset), 3745 (int) Math.floor(mSelectionBounds.top + textVerticalOffset), 3746 (int) Math.ceil(mSelectionBounds.right + textHorizontalOffset), 3747 (int) Math.ceil(mSelectionBounds.bottom + textVerticalOffset)); 3748 } 3749 } 3750 3751 /** 3752 * A listener to call {@link InputMethodManager#updateCursorAnchorInfo(View, CursorAnchorInfo)} 3753 * while the input method is requesting the cursor/anchor position. Does nothing as long as 3754 * {@link InputMethodManager#isWatchingCursor(View)} returns false. 3755 */ 3756 private final class CursorAnchorInfoNotifier implements TextViewPositionListener { 3757 final CursorAnchorInfo.Builder mSelectionInfoBuilder = new CursorAnchorInfo.Builder(); 3758 final int[] mTmpIntOffset = new int[2]; 3759 final Matrix mViewToScreenMatrix = new Matrix(); 3760 3761 @Override 3762 public void updatePosition(int parentPositionX, int parentPositionY, 3763 boolean parentPositionChanged, boolean parentScrolled) { 3764 final InputMethodState ims = mInputMethodState; 3765 if (ims == null || ims.mBatchEditNesting > 0) { 3766 return; 3767 } 3768 final InputMethodManager imm = InputMethodManager.peekInstance(); 3769 if (null == imm) { 3770 return; 3771 } 3772 if (!imm.isActive(mTextView)) { 3773 return; 3774 } 3775 // Skip if the IME has not requested the cursor/anchor position. 3776 if (!imm.isCursorAnchorInfoEnabled()) { 3777 return; 3778 } 3779 Layout layout = mTextView.getLayout(); 3780 if (layout == null) { 3781 return; 3782 } 3783 3784 final CursorAnchorInfo.Builder builder = mSelectionInfoBuilder; 3785 builder.reset(); 3786 3787 final int selectionStart = mTextView.getSelectionStart(); 3788 builder.setSelectionRange(selectionStart, mTextView.getSelectionEnd()); 3789 3790 // Construct transformation matrix from view local coordinates to screen coordinates. 3791 mViewToScreenMatrix.set(mTextView.getMatrix()); 3792 mTextView.getLocationOnScreen(mTmpIntOffset); 3793 mViewToScreenMatrix.postTranslate(mTmpIntOffset[0], mTmpIntOffset[1]); 3794 builder.setMatrix(mViewToScreenMatrix); 3795 3796 final float viewportToContentHorizontalOffset = 3797 mTextView.viewportToContentHorizontalOffset(); 3798 final float viewportToContentVerticalOffset = 3799 mTextView.viewportToContentVerticalOffset(); 3800 3801 final CharSequence text = mTextView.getText(); 3802 if (text instanceof Spannable) { 3803 final Spannable sp = (Spannable) text; 3804 int composingTextStart = EditableInputConnection.getComposingSpanStart(sp); 3805 int composingTextEnd = EditableInputConnection.getComposingSpanEnd(sp); 3806 if (composingTextEnd < composingTextStart) { 3807 final int temp = composingTextEnd; 3808 composingTextEnd = composingTextStart; 3809 composingTextStart = temp; 3810 } 3811 final boolean hasComposingText = 3812 (0 <= composingTextStart) && (composingTextStart < composingTextEnd); 3813 if (hasComposingText) { 3814 final CharSequence composingText = text.subSequence(composingTextStart, 3815 composingTextEnd); 3816 builder.setComposingText(composingTextStart, composingText); 3817 3818 final int minLine = layout.getLineForOffset(composingTextStart); 3819 final int maxLine = layout.getLineForOffset(composingTextEnd - 1); 3820 for (int line = minLine; line <= maxLine; ++line) { 3821 final int lineStart = layout.getLineStart(line); 3822 final int lineEnd = layout.getLineEnd(line); 3823 final int offsetStart = Math.max(lineStart, composingTextStart); 3824 final int offsetEnd = Math.min(lineEnd, composingTextEnd); 3825 final boolean ltrLine = 3826 layout.getParagraphDirection(line) == Layout.DIR_LEFT_TO_RIGHT; 3827 final float[] widths = new float[offsetEnd - offsetStart]; 3828 layout.getPaint().getTextWidths(text, offsetStart, offsetEnd, widths); 3829 final float top = layout.getLineTop(line); 3830 final float bottom = layout.getLineBottom(line); 3831 for (int offset = offsetStart; offset < offsetEnd; ++offset) { 3832 final float charWidth = widths[offset - offsetStart]; 3833 final boolean isRtl = layout.isRtlCharAt(offset); 3834 final float primary = layout.getPrimaryHorizontal(offset); 3835 final float secondary = layout.getSecondaryHorizontal(offset); 3836 // TODO: This doesn't work perfectly for text with custom styles and 3837 // TAB chars. 3838 final float left; 3839 final float right; 3840 if (ltrLine) { 3841 if (isRtl) { 3842 left = secondary - charWidth; 3843 right = secondary; 3844 } else { 3845 left = primary; 3846 right = primary + charWidth; 3847 } 3848 } else { 3849 if (!isRtl) { 3850 left = secondary; 3851 right = secondary + charWidth; 3852 } else { 3853 left = primary - charWidth; 3854 right = primary; 3855 } 3856 } 3857 // TODO: Check top-right and bottom-left as well. 3858 final float localLeft = left + viewportToContentHorizontalOffset; 3859 final float localRight = right + viewportToContentHorizontalOffset; 3860 final float localTop = top + viewportToContentVerticalOffset; 3861 final float localBottom = bottom + viewportToContentVerticalOffset; 3862 final boolean isTopLeftVisible = isPositionVisible(localLeft, localTop); 3863 final boolean isBottomRightVisible = 3864 isPositionVisible(localRight, localBottom); 3865 int characterBoundsFlags = 0; 3866 if (isTopLeftVisible || isBottomRightVisible) { 3867 characterBoundsFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; 3868 } 3869 if (!isTopLeftVisible || !isBottomRightVisible) { 3870 characterBoundsFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; 3871 } 3872 if (isRtl) { 3873 characterBoundsFlags |= CursorAnchorInfo.FLAG_IS_RTL; 3874 } 3875 // Here offset is the index in Java chars. 3876 builder.addCharacterBounds(offset, localLeft, localTop, localRight, 3877 localBottom, characterBoundsFlags); 3878 } 3879 } 3880 } 3881 } 3882 3883 // Treat selectionStart as the insertion point. 3884 if (0 <= selectionStart) { 3885 final int offset = selectionStart; 3886 final int line = layout.getLineForOffset(offset); 3887 final float insertionMarkerX = layout.getPrimaryHorizontal(offset) 3888 + viewportToContentHorizontalOffset; 3889 final float insertionMarkerTop = layout.getLineTop(line) 3890 + viewportToContentVerticalOffset; 3891 final float insertionMarkerBaseline = layout.getLineBaseline(line) 3892 + viewportToContentVerticalOffset; 3893 final float insertionMarkerBottom = layout.getLineBottom(line) 3894 + viewportToContentVerticalOffset; 3895 final boolean isTopVisible = 3896 isPositionVisible(insertionMarkerX, insertionMarkerTop); 3897 final boolean isBottomVisible = 3898 isPositionVisible(insertionMarkerX, insertionMarkerBottom); 3899 int insertionMarkerFlags = 0; 3900 if (isTopVisible || isBottomVisible) { 3901 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; 3902 } 3903 if (!isTopVisible || !isBottomVisible) { 3904 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; 3905 } 3906 if (layout.isRtlCharAt(offset)) { 3907 insertionMarkerFlags |= CursorAnchorInfo.FLAG_IS_RTL; 3908 } 3909 builder.setInsertionMarkerLocation(insertionMarkerX, insertionMarkerTop, 3910 insertionMarkerBaseline, insertionMarkerBottom, insertionMarkerFlags); 3911 } 3912 3913 imm.updateCursorAnchorInfo(mTextView, builder.build()); 3914 } 3915 } 3916 3917 @VisibleForTesting 3918 public abstract class HandleView extends View implements TextViewPositionListener { 3919 protected Drawable mDrawable; 3920 protected Drawable mDrawableLtr; 3921 protected Drawable mDrawableRtl; 3922 private final PopupWindow mContainer; 3923 // Position with respect to the parent TextView 3924 private int mPositionX, mPositionY; 3925 private boolean mIsDragging; 3926 // Offset from touch position to mPosition 3927 private float mTouchToWindowOffsetX, mTouchToWindowOffsetY; 3928 protected int mHotspotX; 3929 protected int mHorizontalGravity; 3930 // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up 3931 private float mTouchOffsetY; 3932 // Where the touch position should be on the handle to ensure a maximum cursor visibility 3933 private float mIdealVerticalOffset; 3934 // Parent's (TextView) previous position in window 3935 private int mLastParentX, mLastParentY; 3936 // Previous text character offset 3937 protected int mPreviousOffset = -1; 3938 // Previous text character offset 3939 private boolean mPositionHasChanged = true; 3940 // Minimum touch target size for handles 3941 private int mMinSize; 3942 // Indicates the line of text that the handle is on. 3943 protected int mPrevLine = UNSET_LINE; 3944 // Indicates the line of text that the user was touching. This can differ from mPrevLine 3945 // when selecting text when the handles jump to the end / start of words which may be on 3946 // a different line. 3947 protected int mPreviousLineTouched = UNSET_LINE; 3948 3949 private HandleView(Drawable drawableLtr, Drawable drawableRtl, final int id) { 3950 super(mTextView.getContext()); 3951 setId(id); 3952 mContainer = new PopupWindow(mTextView.getContext(), null, 3953 com.android.internal.R.attr.textSelectHandleWindowStyle); 3954 mContainer.setSplitTouchEnabled(true); 3955 mContainer.setClippingEnabled(false); 3956 mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 3957 mContainer.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 3958 mContainer.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 3959 mContainer.setContentView(this); 3960 3961 mDrawableLtr = drawableLtr; 3962 mDrawableRtl = drawableRtl; 3963 mMinSize = mTextView.getContext().getResources().getDimensionPixelSize( 3964 com.android.internal.R.dimen.text_handle_min_size); 3965 3966 updateDrawable(); 3967 3968 final int handleHeight = getPreferredHeight(); 3969 mTouchOffsetY = -0.3f * handleHeight; 3970 mIdealVerticalOffset = 0.7f * handleHeight; 3971 } 3972 3973 public float getIdealVerticalOffset() { 3974 return mIdealVerticalOffset; 3975 } 3976 3977 protected void updateDrawable() { 3978 if (mIsDragging) { 3979 // Don't update drawable during dragging. 3980 return; 3981 } 3982 final int offset = getCurrentCursorOffset(); 3983 final boolean isRtlCharAtOffset = mTextView.getLayout().isRtlCharAt(offset); 3984 final Drawable oldDrawable = mDrawable; 3985 mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr; 3986 mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset); 3987 mHorizontalGravity = getHorizontalGravity(isRtlCharAtOffset); 3988 final Layout layout = mTextView.getLayout(); 3989 if (layout != null && oldDrawable != mDrawable && isShowing()) { 3990 // Update popup window position. 3991 mPositionX = getCursorHorizontalPosition(layout, offset) - mHotspotX - 3992 getHorizontalOffset() + getCursorOffset(); 3993 mPositionX += mTextView.viewportToContentHorizontalOffset(); 3994 mPositionHasChanged = true; 3995 updatePosition(mLastParentX, mLastParentY, false, false); 3996 postInvalidate(); 3997 } 3998 } 3999 4000 protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun); 4001 protected abstract int getHorizontalGravity(boolean isRtlRun); 4002 4003 // Touch-up filter: number of previous positions remembered 4004 private static final int HISTORY_SIZE = 5; 4005 private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150; 4006 private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350; 4007 private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; 4008 private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; 4009 private int mPreviousOffsetIndex = 0; 4010 private int mNumberPreviousOffsets = 0; 4011 4012 private void startTouchUpFilter(int offset) { 4013 mNumberPreviousOffsets = 0; 4014 addPositionToTouchUpFilter(offset); 4015 } 4016 4017 private void addPositionToTouchUpFilter(int offset) { 4018 mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; 4019 mPreviousOffsets[mPreviousOffsetIndex] = offset; 4020 mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); 4021 mNumberPreviousOffsets++; 4022 } 4023 4024 private void filterOnTouchUp() { 4025 final long now = SystemClock.uptimeMillis(); 4026 int i = 0; 4027 int index = mPreviousOffsetIndex; 4028 final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); 4029 while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) { 4030 i++; 4031 index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; 4032 } 4033 4034 if (i > 0 && i < iMax && 4035 (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) { 4036 positionAtCursorOffset(mPreviousOffsets[index], false); 4037 } 4038 } 4039 4040 public boolean offsetHasBeenChanged() { 4041 return mNumberPreviousOffsets > 1; 4042 } 4043 4044 @Override 4045 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4046 setMeasuredDimension(getPreferredWidth(), getPreferredHeight()); 4047 } 4048 4049 private int getPreferredWidth() { 4050 return Math.max(mDrawable.getIntrinsicWidth(), mMinSize); 4051 } 4052 4053 private int getPreferredHeight() { 4054 return Math.max(mDrawable.getIntrinsicHeight(), mMinSize); 4055 } 4056 4057 public void show() { 4058 if (isShowing()) return; 4059 4060 getPositionListener().addSubscriber(this, true /* local position may change */); 4061 4062 // Make sure the offset is always considered new, even when focusing at same position 4063 mPreviousOffset = -1; 4064 positionAtCursorOffset(getCurrentCursorOffset(), false); 4065 } 4066 4067 protected void dismiss() { 4068 mIsDragging = false; 4069 mContainer.dismiss(); 4070 onDetached(); 4071 } 4072 4073 public void hide() { 4074 dismiss(); 4075 4076 getPositionListener().removeSubscriber(this); 4077 } 4078 4079 public boolean isShowing() { 4080 return mContainer.isShowing(); 4081 } 4082 4083 private boolean isVisible() { 4084 // Always show a dragging handle. 4085 if (mIsDragging) { 4086 return true; 4087 } 4088 4089 if (mTextView.isInBatchEditMode()) { 4090 return false; 4091 } 4092 4093 return isPositionVisible(mPositionX + mHotspotX + getHorizontalOffset(), mPositionY); 4094 } 4095 4096 public abstract int getCurrentCursorOffset(); 4097 4098 protected abstract void updateSelection(int offset); 4099 4100 public abstract void updatePosition(float x, float y); 4101 4102 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 4103 // A HandleView relies on the layout, which may be nulled by external methods 4104 Layout layout = mTextView.getLayout(); 4105 if (layout == null) { 4106 // Will update controllers' state, hiding them and stopping selection mode if needed 4107 prepareCursorControllers(); 4108 return; 4109 } 4110 layout = getActiveLayout(); 4111 4112 boolean offsetChanged = offset != mPreviousOffset; 4113 if (offsetChanged || parentScrolled) { 4114 if (offsetChanged) { 4115 updateSelection(offset); 4116 addPositionToTouchUpFilter(offset); 4117 } 4118 final int line = layout.getLineForOffset(offset); 4119 mPrevLine = line; 4120 4121 mPositionX = getCursorHorizontalPosition(layout, offset) - mHotspotX - 4122 getHorizontalOffset() + getCursorOffset(); 4123 mPositionY = layout.getLineBottom(line); 4124 4125 // Take TextView's padding and scroll into account. 4126 mPositionX += mTextView.viewportToContentHorizontalOffset(); 4127 mPositionY += mTextView.viewportToContentVerticalOffset(); 4128 4129 mPreviousOffset = offset; 4130 mPositionHasChanged = true; 4131 } 4132 } 4133 4134 /** 4135 * Return the clamped horizontal position for the first cursor. 4136 * 4137 * @param layout Text layout. 4138 * @param offset Character offset for the cursor. 4139 * @return The clamped horizontal position for the cursor. 4140 */ 4141 int getCursorHorizontalPosition(Layout layout, int offset) { 4142 return (int) (layout.getPrimaryHorizontal(offset) - 0.5f); 4143 } 4144 4145 public void updatePosition(int parentPositionX, int parentPositionY, 4146 boolean parentPositionChanged, boolean parentScrolled) { 4147 positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled); 4148 if (parentPositionChanged || mPositionHasChanged) { 4149 if (mIsDragging) { 4150 // Update touchToWindow offset in case of parent scrolling while dragging 4151 if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) { 4152 mTouchToWindowOffsetX += parentPositionX - mLastParentX; 4153 mTouchToWindowOffsetY += parentPositionY - mLastParentY; 4154 mLastParentX = parentPositionX; 4155 mLastParentY = parentPositionY; 4156 } 4157 4158 onHandleMoved(); 4159 } 4160 4161 if (isVisible()) { 4162 // Transform to the window coordinates to follow the view tranformation. 4163 final int[] pts = { mPositionX + mHotspotX + getHorizontalOffset(), mPositionY}; 4164 mTextView.transformFromViewToWindowSpace(pts); 4165 pts[0] -= mHotspotX + getHorizontalOffset(); 4166 4167 if (isShowing()) { 4168 mContainer.update(pts[0], pts[1], -1, -1); 4169 } else { 4170 mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, pts[0], pts[1]); 4171 } 4172 } else { 4173 if (isShowing()) { 4174 dismiss(); 4175 } 4176 } 4177 4178 mPositionHasChanged = false; 4179 } 4180 } 4181 4182 @Override 4183 protected void onDraw(Canvas c) { 4184 final int drawWidth = mDrawable.getIntrinsicWidth(); 4185 final int left = getHorizontalOffset(); 4186 4187 mDrawable.setBounds(left, 0, left + drawWidth, mDrawable.getIntrinsicHeight()); 4188 mDrawable.draw(c); 4189 } 4190 4191 private int getHorizontalOffset() { 4192 final int width = getPreferredWidth(); 4193 final int drawWidth = mDrawable.getIntrinsicWidth(); 4194 final int left; 4195 switch (mHorizontalGravity) { 4196 case Gravity.LEFT: 4197 left = 0; 4198 break; 4199 default: 4200 case Gravity.CENTER: 4201 left = (width - drawWidth) / 2; 4202 break; 4203 case Gravity.RIGHT: 4204 left = width - drawWidth; 4205 break; 4206 } 4207 return left; 4208 } 4209 4210 protected int getCursorOffset() { 4211 return 0; 4212 } 4213 4214 @Override 4215 public boolean onTouchEvent(MotionEvent ev) { 4216 updateFloatingToolbarVisibility(ev); 4217 4218 switch (ev.getActionMasked()) { 4219 case MotionEvent.ACTION_DOWN: { 4220 startTouchUpFilter(getCurrentCursorOffset()); 4221 mTouchToWindowOffsetX = ev.getRawX() - mPositionX; 4222 mTouchToWindowOffsetY = ev.getRawY() - mPositionY; 4223 4224 final PositionListener positionListener = getPositionListener(); 4225 mLastParentX = positionListener.getPositionX(); 4226 mLastParentY = positionListener.getPositionY(); 4227 mIsDragging = true; 4228 mPreviousLineTouched = UNSET_LINE; 4229 break; 4230 } 4231 4232 case MotionEvent.ACTION_MOVE: { 4233 final float rawX = ev.getRawX(); 4234 final float rawY = ev.getRawY(); 4235 4236 // Vertical hysteresis: vertical down movement tends to snap to ideal offset 4237 final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY; 4238 final float currentVerticalOffset = rawY - mPositionY - mLastParentY; 4239 float newVerticalOffset; 4240 if (previousVerticalOffset < mIdealVerticalOffset) { 4241 newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset); 4242 newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset); 4243 } else { 4244 newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset); 4245 newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset); 4246 } 4247 mTouchToWindowOffsetY = newVerticalOffset + mLastParentY; 4248 4249 final float newPosX = 4250 rawX - mTouchToWindowOffsetX + mHotspotX + getHorizontalOffset(); 4251 final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY; 4252 4253 updatePosition(newPosX, newPosY); 4254 break; 4255 } 4256 4257 case MotionEvent.ACTION_UP: 4258 filterOnTouchUp(); 4259 mIsDragging = false; 4260 updateDrawable(); 4261 break; 4262 4263 case MotionEvent.ACTION_CANCEL: 4264 mIsDragging = false; 4265 updateDrawable(); 4266 break; 4267 } 4268 return true; 4269 } 4270 4271 public boolean isDragging() { 4272 return mIsDragging; 4273 } 4274 4275 void onHandleMoved() {} 4276 4277 public void onDetached() {} 4278 } 4279 4280 /** 4281 * Returns the active layout (hint or text layout). Note that the text layout can be null. 4282 */ 4283 private Layout getActiveLayout() { 4284 Layout layout = mTextView.getLayout(); 4285 Layout hintLayout = mTextView.getHintLayout(); 4286 if (TextUtils.isEmpty(layout.getText()) && hintLayout != null && 4287 !TextUtils.isEmpty(hintLayout.getText())) { 4288 layout = hintLayout; 4289 } 4290 return layout; 4291 } 4292 4293 private class InsertionHandleView extends HandleView { 4294 private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000; 4295 private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds 4296 4297 // Used to detect taps on the insertion handle, which will affect the insertion action mode 4298 private float mDownPositionX, mDownPositionY; 4299 private Runnable mHider; 4300 4301 public InsertionHandleView(Drawable drawable) { 4302 super(drawable, drawable, com.android.internal.R.id.insertion_handle); 4303 } 4304 4305 @Override 4306 public void show() { 4307 super.show(); 4308 4309 final long durationSinceCutOrCopy = 4310 SystemClock.uptimeMillis() - TextView.sLastCutCopyOrTextChangedTime; 4311 4312 // Cancel the single tap delayed runnable. 4313 if (mInsertionActionModeRunnable != null 4314 && ((mTapState == TAP_STATE_DOUBLE_TAP) 4315 || (mTapState == TAP_STATE_TRIPLE_CLICK) 4316 || isCursorInsideEasyCorrectionSpan())) { 4317 mTextView.removeCallbacks(mInsertionActionModeRunnable); 4318 } 4319 4320 // Prepare and schedule the single tap runnable to run exactly after the double tap 4321 // timeout has passed. 4322 if ((mTapState != TAP_STATE_DOUBLE_TAP) && (mTapState != TAP_STATE_TRIPLE_CLICK) 4323 && !isCursorInsideEasyCorrectionSpan() 4324 && (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION)) { 4325 if (mTextActionMode == null) { 4326 if (mInsertionActionModeRunnable == null) { 4327 mInsertionActionModeRunnable = new Runnable() { 4328 @Override 4329 public void run() { 4330 startInsertionActionMode(); 4331 } 4332 }; 4333 } 4334 mTextView.postDelayed( 4335 mInsertionActionModeRunnable, 4336 ViewConfiguration.getDoubleTapTimeout() + 1); 4337 } 4338 4339 } 4340 4341 hideAfterDelay(); 4342 } 4343 4344 private void hideAfterDelay() { 4345 if (mHider == null) { 4346 mHider = new Runnable() { 4347 public void run() { 4348 hide(); 4349 } 4350 }; 4351 } else { 4352 removeHiderCallback(); 4353 } 4354 mTextView.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT); 4355 } 4356 4357 private void removeHiderCallback() { 4358 if (mHider != null) { 4359 mTextView.removeCallbacks(mHider); 4360 } 4361 } 4362 4363 @Override 4364 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 4365 return drawable.getIntrinsicWidth() / 2; 4366 } 4367 4368 @Override 4369 protected int getHorizontalGravity(boolean isRtlRun) { 4370 return Gravity.CENTER_HORIZONTAL; 4371 } 4372 4373 @Override 4374 protected int getCursorOffset() { 4375 int offset = super.getCursorOffset(); 4376 final Drawable cursor = mCursorCount > 0 ? mCursorDrawable[0] : null; 4377 if (cursor != null) { 4378 cursor.getPadding(mTempRect); 4379 offset += (cursor.getIntrinsicWidth() - mTempRect.left - mTempRect.right) / 2; 4380 } 4381 return offset; 4382 } 4383 4384 @Override 4385 int getCursorHorizontalPosition(Layout layout, int offset) { 4386 final Drawable drawable = mCursorCount > 0 ? mCursorDrawable[0] : null; 4387 if (drawable != null) { 4388 final float horizontal = layout.getPrimaryHorizontal(offset); 4389 return clampCursorHorizontalPosition(drawable, horizontal) + mTempRect.left; 4390 } 4391 return super.getCursorHorizontalPosition(layout, offset); 4392 } 4393 4394 @Override 4395 public boolean onTouchEvent(MotionEvent ev) { 4396 final boolean result = super.onTouchEvent(ev); 4397 4398 switch (ev.getActionMasked()) { 4399 case MotionEvent.ACTION_DOWN: 4400 mDownPositionX = ev.getRawX(); 4401 mDownPositionY = ev.getRawY(); 4402 break; 4403 4404 case MotionEvent.ACTION_UP: 4405 if (!offsetHasBeenChanged()) { 4406 final float deltaX = mDownPositionX - ev.getRawX(); 4407 final float deltaY = mDownPositionY - ev.getRawY(); 4408 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 4409 4410 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 4411 mTextView.getContext()); 4412 final int touchSlop = viewConfiguration.getScaledTouchSlop(); 4413 4414 if (distanceSquared < touchSlop * touchSlop) { 4415 // Tapping on the handle toggles the insertion action mode. 4416 if (mTextActionMode != null) { 4417 stopTextActionMode(); 4418 } else { 4419 startInsertionActionMode(); 4420 } 4421 } 4422 } else { 4423 if (mTextActionMode != null) { 4424 mTextActionMode.invalidateContentRect(); 4425 } 4426 } 4427 hideAfterDelay(); 4428 break; 4429 4430 case MotionEvent.ACTION_CANCEL: 4431 hideAfterDelay(); 4432 break; 4433 4434 default: 4435 break; 4436 } 4437 4438 return result; 4439 } 4440 4441 @Override 4442 public int getCurrentCursorOffset() { 4443 return mTextView.getSelectionStart(); 4444 } 4445 4446 @Override 4447 public void updateSelection(int offset) { 4448 Selection.setSelection((Spannable) mTextView.getText(), offset); 4449 } 4450 4451 @Override 4452 public void updatePosition(float x, float y) { 4453 Layout layout = mTextView.getLayout(); 4454 int offset; 4455 if (layout != null) { 4456 if (mPreviousLineTouched == UNSET_LINE) { 4457 mPreviousLineTouched = mTextView.getLineAtCoordinate(y); 4458 } 4459 int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); 4460 offset = mTextView.getOffsetAtCoordinate(currLine, x); 4461 mPreviousLineTouched = currLine; 4462 } else { 4463 offset = mTextView.getOffsetForPosition(x, y); 4464 } 4465 positionAtCursorOffset(offset, false); 4466 if (mTextActionMode != null) { 4467 mTextActionMode.invalidate(); 4468 } 4469 } 4470 4471 @Override 4472 void onHandleMoved() { 4473 super.onHandleMoved(); 4474 removeHiderCallback(); 4475 } 4476 4477 @Override 4478 public void onDetached() { 4479 super.onDetached(); 4480 removeHiderCallback(); 4481 } 4482 } 4483 4484 @Retention(RetentionPolicy.SOURCE) 4485 @IntDef({HANDLE_TYPE_SELECTION_START, HANDLE_TYPE_SELECTION_END}) 4486 public @interface HandleType {} 4487 public static final int HANDLE_TYPE_SELECTION_START = 0; 4488 public static final int HANDLE_TYPE_SELECTION_END = 1; 4489 4490 private class SelectionHandleView extends HandleView { 4491 // Indicates the handle type, selection start (HANDLE_TYPE_SELECTION_START) or selection 4492 // end (HANDLE_TYPE_SELECTION_END). 4493 @HandleType 4494 private final int mHandleType; 4495 // Indicates whether the cursor is making adjustments within a word. 4496 private boolean mInWord = false; 4497 // Difference between touch position and word boundary position. 4498 private float mTouchWordDelta; 4499 // X value of the previous updatePosition call. 4500 private float mPrevX; 4501 // Indicates if the handle has moved a boundary between LTR and RTL text. 4502 private boolean mLanguageDirectionChanged = false; 4503 // Distance from edge of horizontally scrolling text view 4504 // to use to switch to character mode. 4505 private final float mTextViewEdgeSlop; 4506 // Used to save text view location. 4507 private final int[] mTextViewLocation = new int[2]; 4508 4509 public SelectionHandleView(Drawable drawableLtr, Drawable drawableRtl, int id, 4510 @HandleType int handleType) { 4511 super(drawableLtr, drawableRtl, id); 4512 mHandleType = handleType; 4513 ViewConfiguration viewConfiguration = ViewConfiguration.get(mTextView.getContext()); 4514 mTextViewEdgeSlop = viewConfiguration.getScaledTouchSlop() * 4; 4515 } 4516 4517 private boolean isStartHandle() { 4518 return mHandleType == HANDLE_TYPE_SELECTION_START; 4519 } 4520 4521 @Override 4522 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 4523 if (isRtlRun == isStartHandle()) { 4524 return drawable.getIntrinsicWidth() / 4; 4525 } else { 4526 return (drawable.getIntrinsicWidth() * 3) / 4; 4527 } 4528 } 4529 4530 @Override 4531 protected int getHorizontalGravity(boolean isRtlRun) { 4532 return (isRtlRun == isStartHandle()) ? Gravity.LEFT : Gravity.RIGHT; 4533 } 4534 4535 @Override 4536 public int getCurrentCursorOffset() { 4537 return isStartHandle() ? mTextView.getSelectionStart() : mTextView.getSelectionEnd(); 4538 } 4539 4540 @Override 4541 protected void updateSelection(int offset) { 4542 if (isStartHandle()) { 4543 Selection.setSelection((Spannable) mTextView.getText(), offset, 4544 mTextView.getSelectionEnd()); 4545 } else { 4546 Selection.setSelection((Spannable) mTextView.getText(), 4547 mTextView.getSelectionStart(), offset); 4548 } 4549 updateDrawable(); 4550 if (mTextActionMode != null) { 4551 mTextActionMode.invalidate(); 4552 } 4553 } 4554 4555 @Override 4556 public void updatePosition(float x, float y) { 4557 final Layout layout = mTextView.getLayout(); 4558 if (layout == null) { 4559 // HandleView will deal appropriately in positionAtCursorOffset when 4560 // layout is null. 4561 positionAndAdjustForCrossingHandles(mTextView.getOffsetForPosition(x, y)); 4562 return; 4563 } 4564 4565 if (mPreviousLineTouched == UNSET_LINE) { 4566 mPreviousLineTouched = mTextView.getLineAtCoordinate(y); 4567 } 4568 4569 boolean positionCursor = false; 4570 final int anotherHandleOffset = 4571 isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); 4572 int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); 4573 int initialOffset = mTextView.getOffsetAtCoordinate(currLine, x); 4574 4575 if (isStartHandle() && initialOffset >= anotherHandleOffset 4576 || !isStartHandle() && initialOffset <= anotherHandleOffset) { 4577 // Handles have crossed, bound it to the first selected line and 4578 // adjust by word / char as normal. 4579 currLine = layout.getLineForOffset(anotherHandleOffset); 4580 initialOffset = mTextView.getOffsetAtCoordinate(currLine, x); 4581 } 4582 4583 int offset = initialOffset; 4584 final int wordEnd = getWordEnd(offset); 4585 final int wordStart = getWordStart(offset); 4586 4587 if (mPrevX == UNSET_X_VALUE) { 4588 mPrevX = x; 4589 } 4590 4591 final int currentOffset = getCurrentCursorOffset(); 4592 final boolean rtlAtCurrentOffset = layout.isRtlCharAt(currentOffset); 4593 final boolean atRtl = layout.isRtlCharAt(offset); 4594 final boolean isLvlBoundary = layout.isLevelBoundary(offset); 4595 4596 // We can't determine if the user is expanding or shrinking the selection if they're 4597 // on a bi-di boundary, so until they've moved past the boundary we'll just place 4598 // the cursor at the current position. 4599 if (isLvlBoundary || (rtlAtCurrentOffset && !atRtl) || (!rtlAtCurrentOffset && atRtl)) { 4600 // We're on a boundary or this is the first direction change -- just update 4601 // to the current position. 4602 mLanguageDirectionChanged = true; 4603 mTouchWordDelta = 0.0f; 4604 positionAndAdjustForCrossingHandles(offset); 4605 return; 4606 } else if (mLanguageDirectionChanged && !isLvlBoundary) { 4607 // We've just moved past the boundary so update the position. After this we can 4608 // figure out if the user is expanding or shrinking to go by word or character. 4609 positionAndAdjustForCrossingHandles(offset); 4610 mTouchWordDelta = 0.0f; 4611 mLanguageDirectionChanged = false; 4612 return; 4613 } 4614 4615 boolean isExpanding; 4616 final float xDiff = x - mPrevX; 4617 if (isStartHandle()) { 4618 isExpanding = currLine < mPreviousLineTouched; 4619 } else { 4620 isExpanding = currLine > mPreviousLineTouched; 4621 } 4622 if (atRtl == isStartHandle()) { 4623 isExpanding |= xDiff > 0; 4624 } else { 4625 isExpanding |= xDiff < 0; 4626 } 4627 4628 if (mTextView.getHorizontallyScrolling()) { 4629 if (positionNearEdgeOfScrollingView(x, atRtl) 4630 && ((isStartHandle() && mTextView.getScrollX() != 0) 4631 || (!isStartHandle() 4632 && mTextView.canScrollHorizontally(atRtl ? -1 : 1))) 4633 && ((isExpanding && ((isStartHandle() && offset < currentOffset) 4634 || (!isStartHandle() && offset > currentOffset))) 4635 || !isExpanding)) { 4636 // If we're expanding ensure that the offset is actually expanding compared to 4637 // the current offset, if the handle snapped to the word, the finger position 4638 // may be out of sync and we don't want the selection to jump back. 4639 mTouchWordDelta = 0.0f; 4640 final int nextOffset = (atRtl == isStartHandle()) 4641 ? layout.getOffsetToRightOf(mPreviousOffset) 4642 : layout.getOffsetToLeftOf(mPreviousOffset); 4643 positionAndAdjustForCrossingHandles(nextOffset); 4644 return; 4645 } 4646 } 4647 4648 if (isExpanding) { 4649 // User is increasing the selection. 4650 final boolean snapToWord = !mInWord 4651 || (isStartHandle() ? currLine < mPrevLine : currLine > mPrevLine); 4652 if (snapToWord) { 4653 // Sometimes words can be broken across lines (Chinese, hyphenation). 4654 // We still snap to the word boundary but we only use the letters on the 4655 // current line to determine if the user is far enough into the word to snap. 4656 int wordBoundary = isStartHandle() ? wordStart : wordEnd; 4657 if (layout != null && layout.getLineForOffset(wordBoundary) != currLine) { 4658 wordBoundary = isStartHandle() ? 4659 layout.getLineStart(currLine) : layout.getLineEnd(currLine); 4660 } 4661 final int offsetThresholdToSnap = isStartHandle() 4662 ? wordEnd - ((wordEnd - wordBoundary) / 2) 4663 : wordStart + ((wordBoundary - wordStart) / 2); 4664 if (isStartHandle() 4665 && (offset <= offsetThresholdToSnap || currLine < mPrevLine)) { 4666 // User is far enough into the word or on a different line so we expand by 4667 // word. 4668 offset = wordStart; 4669 } else if (!isStartHandle() 4670 && (offset >= offsetThresholdToSnap || currLine > mPrevLine)) { 4671 // User is far enough into the word or on a different line so we expand by 4672 // word. 4673 offset = wordEnd; 4674 } else { 4675 offset = mPreviousOffset; 4676 } 4677 } 4678 if (layout != null && (isStartHandle() && offset < initialOffset) 4679 || (!isStartHandle() && offset > initialOffset)) { 4680 final float adjustedX = layout.getPrimaryHorizontal(offset); 4681 mTouchWordDelta = 4682 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 4683 } else { 4684 mTouchWordDelta = 0.0f; 4685 } 4686 positionCursor = true; 4687 } else { 4688 final int adjustedOffset = 4689 mTextView.getOffsetAtCoordinate(currLine, x - mTouchWordDelta); 4690 final boolean shrinking = isStartHandle() 4691 ? adjustedOffset > mPreviousOffset || currLine > mPrevLine 4692 : adjustedOffset < mPreviousOffset || currLine < mPrevLine; 4693 if (shrinking) { 4694 // User is shrinking the selection. 4695 if (currLine != mPrevLine) { 4696 // We're on a different line, so we'll snap to word boundaries. 4697 offset = isStartHandle() ? wordStart : wordEnd; 4698 if (layout != null && (isStartHandle() && offset < initialOffset) 4699 || (!isStartHandle() && offset > initialOffset)) { 4700 final float adjustedX = layout.getPrimaryHorizontal(offset); 4701 mTouchWordDelta = 4702 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 4703 } else { 4704 mTouchWordDelta = 0.0f; 4705 } 4706 } else { 4707 offset = adjustedOffset; 4708 } 4709 positionCursor = true; 4710 } else if ((isStartHandle() && adjustedOffset < mPreviousOffset) 4711 || (!isStartHandle() && adjustedOffset > mPreviousOffset)) { 4712 // Handle has jumped to the word boundary, and the user is moving 4713 // their finger towards the handle, the delta should be updated. 4714 mTouchWordDelta = mTextView.convertToLocalHorizontalCoordinate(x) - 4715 layout.getPrimaryHorizontal(mPreviousOffset); 4716 } 4717 } 4718 4719 if (positionCursor) { 4720 mPreviousLineTouched = currLine; 4721 positionAndAdjustForCrossingHandles(offset); 4722 } 4723 mPrevX = x; 4724 } 4725 4726 /** 4727 * @param offset Cursor offset. Must be in [-1, length]. 4728 * @param parentScrolled If the parent has been scrolled or not. 4729 */ 4730 @Override 4731 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 4732 super.positionAtCursorOffset(offset, parentScrolled); 4733 mInWord = (offset != -1) && !getWordIteratorWithText().isBoundary(offset); 4734 } 4735 4736 @Override 4737 public boolean onTouchEvent(MotionEvent event) { 4738 boolean superResult = super.onTouchEvent(event); 4739 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 4740 // Reset the touch word offset and x value when the user 4741 // re-engages the handle. 4742 mTouchWordDelta = 0.0f; 4743 mPrevX = UNSET_X_VALUE; 4744 } 4745 return superResult; 4746 } 4747 4748 private void positionAndAdjustForCrossingHandles(int offset) { 4749 final int anotherHandleOffset = 4750 isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); 4751 if ((isStartHandle() && offset >= anotherHandleOffset) 4752 || (!isStartHandle() && offset <= anotherHandleOffset)) { 4753 // Handles can not cross and selection is at least one character. 4754 offset = getNextCursorOffset(anotherHandleOffset, !isStartHandle()); 4755 mTouchWordDelta = 0.0f; 4756 } 4757 positionAtCursorOffset(offset, false); 4758 } 4759 4760 private boolean positionNearEdgeOfScrollingView(float x, boolean atRtl) { 4761 mTextView.getLocationOnScreen(mTextViewLocation); 4762 boolean nearEdge; 4763 if (atRtl == isStartHandle()) { 4764 int rightEdge = mTextViewLocation[0] + mTextView.getWidth() 4765 - mTextView.getPaddingRight(); 4766 nearEdge = x > rightEdge - mTextViewEdgeSlop; 4767 } else { 4768 int leftEdge = mTextViewLocation[0] + mTextView.getPaddingLeft(); 4769 nearEdge = x < leftEdge + mTextViewEdgeSlop; 4770 } 4771 return nearEdge; 4772 } 4773 } 4774 4775 private int getCurrentLineAdjustedForSlop(Layout layout, int prevLine, float y) { 4776 final int trueLine = mTextView.getLineAtCoordinate(y); 4777 if (layout == null || prevLine > layout.getLineCount() 4778 || layout.getLineCount() <= 0 || prevLine < 0) { 4779 // Invalid parameters, just return whatever line is at y. 4780 return trueLine; 4781 } 4782 4783 if (Math.abs(trueLine - prevLine) >= 2) { 4784 // Only stick to lines if we're within a line of the previous selection. 4785 return trueLine; 4786 } 4787 4788 final float verticalOffset = mTextView.viewportToContentVerticalOffset(); 4789 final int lineCount = layout.getLineCount(); 4790 final float slop = mTextView.getLineHeight() * LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS; 4791 4792 final float firstLineTop = layout.getLineTop(0) + verticalOffset; 4793 final float prevLineTop = layout.getLineTop(prevLine) + verticalOffset; 4794 final float yTopBound = Math.max(prevLineTop - slop, firstLineTop + slop); 4795 4796 final float lastLineBottom = layout.getLineBottom(lineCount - 1) + verticalOffset; 4797 final float prevLineBottom = layout.getLineBottom(prevLine) + verticalOffset; 4798 final float yBottomBound = Math.min(prevLineBottom + slop, lastLineBottom - slop); 4799 4800 // Determine if we've moved lines based on y position and previous line. 4801 int currLine; 4802 if (y <= yTopBound) { 4803 currLine = Math.max(prevLine - 1, 0); 4804 } else if (y >= yBottomBound) { 4805 currLine = Math.min(prevLine + 1, lineCount - 1); 4806 } else { 4807 currLine = prevLine; 4808 } 4809 return currLine; 4810 } 4811 4812 /** 4813 * A CursorController instance can be used to control a cursor in the text. 4814 */ 4815 private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { 4816 /** 4817 * Makes the cursor controller visible on screen. 4818 * See also {@link #hide()}. 4819 */ 4820 public void show(); 4821 4822 /** 4823 * Hide the cursor controller from screen. 4824 * See also {@link #show()}. 4825 */ 4826 public void hide(); 4827 4828 /** 4829 * Called when the view is detached from window. Perform house keeping task, such as 4830 * stopping Runnable thread that would otherwise keep a reference on the context, thus 4831 * preventing the activity from being recycled. 4832 */ 4833 public void onDetached(); 4834 4835 public boolean isCursorBeingModified(); 4836 4837 public boolean isActive(); 4838 } 4839 4840 private class InsertionPointCursorController implements CursorController { 4841 private InsertionHandleView mHandle; 4842 4843 public void show() { 4844 getHandle().show(); 4845 4846 if (mSelectionModifierCursorController != null) { 4847 mSelectionModifierCursorController.hide(); 4848 } 4849 } 4850 4851 public void hide() { 4852 if (mHandle != null) { 4853 mHandle.hide(); 4854 } 4855 } 4856 4857 public void onTouchModeChanged(boolean isInTouchMode) { 4858 if (!isInTouchMode) { 4859 hide(); 4860 } 4861 } 4862 4863 private InsertionHandleView getHandle() { 4864 if (mSelectHandleCenter == null) { 4865 mSelectHandleCenter = mTextView.getContext().getDrawable( 4866 mTextView.mTextSelectHandleRes); 4867 } 4868 if (mHandle == null) { 4869 mHandle = new InsertionHandleView(mSelectHandleCenter); 4870 } 4871 return mHandle; 4872 } 4873 4874 @Override 4875 public void onDetached() { 4876 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 4877 observer.removeOnTouchModeChangeListener(this); 4878 4879 if (mHandle != null) mHandle.onDetached(); 4880 } 4881 4882 @Override 4883 public boolean isCursorBeingModified() { 4884 return mHandle != null && mHandle.isDragging(); 4885 } 4886 4887 @Override 4888 public boolean isActive() { 4889 return mHandle != null && mHandle.isShowing(); 4890 } 4891 } 4892 4893 class SelectionModifierCursorController implements CursorController { 4894 // The cursor controller handles, lazily created when shown. 4895 private SelectionHandleView mStartHandle; 4896 private SelectionHandleView mEndHandle; 4897 // The offsets of that last touch down event. Remembered to start selection there. 4898 private int mMinTouchOffset, mMaxTouchOffset; 4899 4900 private float mDownPositionX, mDownPositionY; 4901 private boolean mGestureStayedInTapRegion; 4902 4903 // Where the user first starts the drag motion. 4904 private int mStartOffset = -1; 4905 4906 private boolean mHaventMovedEnoughToStartDrag; 4907 // The line that a selection happened most recently with the drag accelerator. 4908 private int mLineSelectionIsOn = -1; 4909 // Whether the drag accelerator has selected past the initial line. 4910 private boolean mSwitchedLines = false; 4911 4912 // Indicates the drag accelerator mode that the user is currently using. 4913 private int mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; 4914 // Drag accelerator is inactive. 4915 private static final int DRAG_ACCELERATOR_MODE_INACTIVE = 0; 4916 // Character based selection by dragging. Only for mouse. 4917 private static final int DRAG_ACCELERATOR_MODE_CHARACTER = 1; 4918 // Word based selection by dragging. Enabled after long pressing or double tapping. 4919 private static final int DRAG_ACCELERATOR_MODE_WORD = 2; 4920 // Paragraph based selection by dragging. Enabled after mouse triple click. 4921 private static final int DRAG_ACCELERATOR_MODE_PARAGRAPH = 3; 4922 4923 SelectionModifierCursorController() { 4924 resetTouchOffsets(); 4925 } 4926 4927 public void show() { 4928 if (mTextView.isInBatchEditMode()) { 4929 return; 4930 } 4931 initDrawables(); 4932 initHandles(); 4933 } 4934 4935 private void initDrawables() { 4936 if (mSelectHandleLeft == null) { 4937 mSelectHandleLeft = mTextView.getContext().getDrawable( 4938 mTextView.mTextSelectHandleLeftRes); 4939 } 4940 if (mSelectHandleRight == null) { 4941 mSelectHandleRight = mTextView.getContext().getDrawable( 4942 mTextView.mTextSelectHandleRightRes); 4943 } 4944 } 4945 4946 private void initHandles() { 4947 // Lazy object creation has to be done before updatePosition() is called. 4948 if (mStartHandle == null) { 4949 mStartHandle = new SelectionHandleView(mSelectHandleLeft, mSelectHandleRight, 4950 com.android.internal.R.id.selection_start_handle, 4951 HANDLE_TYPE_SELECTION_START); 4952 } 4953 if (mEndHandle == null) { 4954 mEndHandle = new SelectionHandleView(mSelectHandleRight, mSelectHandleLeft, 4955 com.android.internal.R.id.selection_end_handle, 4956 HANDLE_TYPE_SELECTION_END); 4957 } 4958 4959 mStartHandle.show(); 4960 mEndHandle.show(); 4961 4962 hideInsertionPointCursorController(); 4963 } 4964 4965 public void hide() { 4966 if (mStartHandle != null) mStartHandle.hide(); 4967 if (mEndHandle != null) mEndHandle.hide(); 4968 } 4969 4970 public void enterDrag(int dragAcceleratorMode) { 4971 // Just need to init the handles / hide insertion cursor. 4972 show(); 4973 mDragAcceleratorMode = dragAcceleratorMode; 4974 // Start location of selection. 4975 mStartOffset = mTextView.getOffsetForPosition(mLastDownPositionX, 4976 mLastDownPositionY); 4977 mLineSelectionIsOn = mTextView.getLineAtCoordinate(mLastDownPositionY); 4978 // Don't show the handles until user has lifted finger. 4979 hide(); 4980 4981 // This stops scrolling parents from intercepting the touch event, allowing 4982 // the user to continue dragging across the screen to select text; TextView will 4983 // scroll as necessary. 4984 mTextView.getParent().requestDisallowInterceptTouchEvent(true); 4985 mTextView.cancelLongPress(); 4986 } 4987 4988 public void onTouchEvent(MotionEvent event) { 4989 // This is done even when the View does not have focus, so that long presses can start 4990 // selection and tap can move cursor from this tap position. 4991 final float eventX = event.getX(); 4992 final float eventY = event.getY(); 4993 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 4994 switch (event.getActionMasked()) { 4995 case MotionEvent.ACTION_DOWN: 4996 if (extractedTextModeWillBeStarted()) { 4997 // Prevent duplicating the selection handles until the mode starts. 4998 hide(); 4999 } else { 5000 // Remember finger down position, to be able to start selection from there. 5001 mMinTouchOffset = mMaxTouchOffset = mTextView.getOffsetForPosition( 5002 eventX, eventY); 5003 5004 // Double tap detection 5005 if (mGestureStayedInTapRegion) { 5006 if (mTapState == TAP_STATE_DOUBLE_TAP 5007 || mTapState == TAP_STATE_TRIPLE_CLICK) { 5008 final float deltaX = eventX - mDownPositionX; 5009 final float deltaY = eventY - mDownPositionY; 5010 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 5011 5012 ViewConfiguration viewConfiguration = ViewConfiguration.get( 5013 mTextView.getContext()); 5014 int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop(); 5015 boolean stayedInArea = 5016 distanceSquared < doubleTapSlop * doubleTapSlop; 5017 5018 if (stayedInArea && (isMouse || isPositionOnText(eventX, eventY))) { 5019 if (mTapState == TAP_STATE_DOUBLE_TAP) { 5020 selectCurrentWordAndStartDrag(); 5021 } else if (mTapState == TAP_STATE_TRIPLE_CLICK) { 5022 selectCurrentParagraphAndStartDrag(); 5023 } 5024 mDiscardNextActionUp = true; 5025 } 5026 } 5027 } 5028 5029 mDownPositionX = eventX; 5030 mDownPositionY = eventY; 5031 mGestureStayedInTapRegion = true; 5032 mHaventMovedEnoughToStartDrag = true; 5033 } 5034 break; 5035 5036 case MotionEvent.ACTION_POINTER_DOWN: 5037 case MotionEvent.ACTION_POINTER_UP: 5038 // Handle multi-point gestures. Keep min and max offset positions. 5039 // Only activated for devices that correctly handle multi-touch. 5040 if (mTextView.getContext().getPackageManager().hasSystemFeature( 5041 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { 5042 updateMinAndMaxOffsets(event); 5043 } 5044 break; 5045 5046 case MotionEvent.ACTION_MOVE: 5047 final ViewConfiguration viewConfig = ViewConfiguration.get( 5048 mTextView.getContext()); 5049 final int touchSlop = viewConfig.getScaledTouchSlop(); 5050 5051 if (mGestureStayedInTapRegion || mHaventMovedEnoughToStartDrag) { 5052 final float deltaX = eventX - mDownPositionX; 5053 final float deltaY = eventY - mDownPositionY; 5054 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 5055 5056 if (mGestureStayedInTapRegion) { 5057 int doubleTapTouchSlop = viewConfig.getScaledDoubleTapTouchSlop(); 5058 mGestureStayedInTapRegion = 5059 distanceSquared <= doubleTapTouchSlop * doubleTapTouchSlop; 5060 } 5061 if (mHaventMovedEnoughToStartDrag) { 5062 // We don't start dragging until the user has moved enough. 5063 mHaventMovedEnoughToStartDrag = 5064 distanceSquared <= touchSlop * touchSlop; 5065 } 5066 } 5067 5068 if (isMouse && !isDragAcceleratorActive()) { 5069 final int offset = mTextView.getOffsetForPosition(eventX, eventY); 5070 if (mTextView.hasSelection() 5071 && (!mHaventMovedEnoughToStartDrag || mStartOffset != offset) 5072 && offset >= mTextView.getSelectionStart() 5073 && offset <= mTextView.getSelectionEnd()) { 5074 startDragAndDrop(); 5075 break; 5076 } 5077 5078 if (mStartOffset != offset) { 5079 // Start character based drag accelerator. 5080 stopTextActionMode(); 5081 enterDrag(DRAG_ACCELERATOR_MODE_CHARACTER); 5082 mDiscardNextActionUp = true; 5083 mHaventMovedEnoughToStartDrag = false; 5084 } 5085 } 5086 5087 if (mStartHandle != null && mStartHandle.isShowing()) { 5088 // Don't do the drag if the handles are showing already. 5089 break; 5090 } 5091 5092 updateSelection(event); 5093 break; 5094 5095 case MotionEvent.ACTION_UP: 5096 if (!isDragAcceleratorActive()) { 5097 break; 5098 } 5099 updateSelection(event); 5100 5101 // No longer dragging to select text, let the parent intercept events. 5102 mTextView.getParent().requestDisallowInterceptTouchEvent(false); 5103 5104 int startOffset = mTextView.getSelectionStart(); 5105 int endOffset = mTextView.getSelectionEnd(); 5106 5107 // Since we don't let drag handles pass once they're visible, we need to 5108 // make sure the start / end locations are correct because the user *can* 5109 // switch directions during the initial drag. 5110 if (endOffset < startOffset) { 5111 int tmp = endOffset; 5112 endOffset = startOffset; 5113 startOffset = tmp; 5114 5115 // Also update the selection with the right offsets in this case. 5116 Selection.setSelection((Spannable) mTextView.getText(), 5117 startOffset, endOffset); 5118 } 5119 if (startOffset != endOffset) { 5120 startSelectionActionMode(); 5121 } 5122 5123 // No longer the first dragging motion, reset. 5124 resetDragAcceleratorState(); 5125 break; 5126 } 5127 } 5128 5129 private void updateSelection(MotionEvent event) { 5130 if (mTextView.getLayout() != null) { 5131 switch (mDragAcceleratorMode) { 5132 case DRAG_ACCELERATOR_MODE_CHARACTER: 5133 updateCharacterBasedSelection(event); 5134 break; 5135 case DRAG_ACCELERATOR_MODE_WORD: 5136 updateWordBasedSelection(event); 5137 break; 5138 case DRAG_ACCELERATOR_MODE_PARAGRAPH: 5139 updateParagraphBasedSelection(event); 5140 break; 5141 } 5142 } 5143 } 5144 5145 /** 5146 * If the TextView allows text selection, selects the current paragraph and starts a drag. 5147 * 5148 * @return true if the drag was started. 5149 */ 5150 private boolean selectCurrentParagraphAndStartDrag() { 5151 if (mInsertionActionModeRunnable != null) { 5152 mTextView.removeCallbacks(mInsertionActionModeRunnable); 5153 } 5154 stopTextActionMode(); 5155 if (!selectCurrentParagraph()) { 5156 return false; 5157 } 5158 enterDrag(SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_PARAGRAPH); 5159 return true; 5160 } 5161 5162 private void updateCharacterBasedSelection(MotionEvent event) { 5163 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 5164 Selection.setSelection((Spannable) mTextView.getText(), mStartOffset, offset); 5165 } 5166 5167 private void updateWordBasedSelection(MotionEvent event) { 5168 if (mHaventMovedEnoughToStartDrag) { 5169 return; 5170 } 5171 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 5172 final ViewConfiguration viewConfig = ViewConfiguration.get( 5173 mTextView.getContext()); 5174 final float eventX = event.getX(); 5175 final float eventY = event.getY(); 5176 final int currLine; 5177 if (isMouse) { 5178 // No need to offset the y coordinate for mouse input. 5179 currLine = mTextView.getLineAtCoordinate(eventY); 5180 } else { 5181 float y = eventY; 5182 if (mSwitchedLines) { 5183 // Offset the finger by the same vertical offset as the handles. 5184 // This improves visibility of the content being selected by 5185 // shifting the finger below the content, this is applied once 5186 // the user has switched lines. 5187 final int touchSlop = viewConfig.getScaledTouchSlop(); 5188 final float fingerOffset = (mStartHandle != null) 5189 ? mStartHandle.getIdealVerticalOffset() 5190 : touchSlop; 5191 y = eventY - fingerOffset; 5192 } 5193 5194 currLine = getCurrentLineAdjustedForSlop(mTextView.getLayout(), mLineSelectionIsOn, 5195 y); 5196 if (!mSwitchedLines && currLine != mLineSelectionIsOn) { 5197 // Break early here, we want to offset the finger position from 5198 // the selection highlight, once the user moved their finger 5199 // to a different line we should apply the offset and *not* switch 5200 // lines until recomputing the position with the finger offset. 5201 mSwitchedLines = true; 5202 return; 5203 } 5204 } 5205 5206 int startOffset; 5207 int offset = mTextView.getOffsetAtCoordinate(currLine, eventX); 5208 // Snap to word boundaries. 5209 if (mStartOffset < offset) { 5210 // Expanding with end handle. 5211 offset = getWordEnd(offset); 5212 startOffset = getWordStart(mStartOffset); 5213 } else { 5214 // Expanding with start handle. 5215 offset = getWordStart(offset); 5216 startOffset = getWordEnd(mStartOffset); 5217 } 5218 mLineSelectionIsOn = currLine; 5219 Selection.setSelection((Spannable) mTextView.getText(), 5220 startOffset, offset); 5221 } 5222 5223 private void updateParagraphBasedSelection(MotionEvent event) { 5224 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 5225 5226 final int start = Math.min(offset, mStartOffset); 5227 final int end = Math.max(offset, mStartOffset); 5228 final long paragraphsRange = getParagraphsRange(start, end); 5229 final int selectionStart = TextUtils.unpackRangeStartFromLong(paragraphsRange); 5230 final int selectionEnd = TextUtils.unpackRangeEndFromLong(paragraphsRange); 5231 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 5232 } 5233 5234 /** 5235 * @param event 5236 */ 5237 private void updateMinAndMaxOffsets(MotionEvent event) { 5238 int pointerCount = event.getPointerCount(); 5239 for (int index = 0; index < pointerCount; index++) { 5240 int offset = mTextView.getOffsetForPosition(event.getX(index), event.getY(index)); 5241 if (offset < mMinTouchOffset) mMinTouchOffset = offset; 5242 if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; 5243 } 5244 } 5245 5246 public int getMinTouchOffset() { 5247 return mMinTouchOffset; 5248 } 5249 5250 public int getMaxTouchOffset() { 5251 return mMaxTouchOffset; 5252 } 5253 5254 public void resetTouchOffsets() { 5255 mMinTouchOffset = mMaxTouchOffset = -1; 5256 resetDragAcceleratorState(); 5257 } 5258 5259 private void resetDragAcceleratorState() { 5260 mStartOffset = -1; 5261 mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; 5262 mSwitchedLines = false; 5263 final int selectionStart = mTextView.getSelectionStart(); 5264 final int selectionEnd = mTextView.getSelectionEnd(); 5265 if (selectionStart > selectionEnd) { 5266 Selection.setSelection((Spannable) mTextView.getText(), 5267 selectionEnd, selectionStart); 5268 } 5269 } 5270 5271 /** 5272 * @return true iff this controller is currently used to move the selection start. 5273 */ 5274 public boolean isSelectionStartDragged() { 5275 return mStartHandle != null && mStartHandle.isDragging(); 5276 } 5277 5278 @Override 5279 public boolean isCursorBeingModified() { 5280 return isDragAcceleratorActive() || isSelectionStartDragged() 5281 || (mEndHandle != null && mEndHandle.isDragging()); 5282 } 5283 5284 /** 5285 * @return true if the user is selecting text using the drag accelerator. 5286 */ 5287 public boolean isDragAcceleratorActive() { 5288 return mDragAcceleratorMode != DRAG_ACCELERATOR_MODE_INACTIVE; 5289 } 5290 5291 public void onTouchModeChanged(boolean isInTouchMode) { 5292 if (!isInTouchMode) { 5293 hide(); 5294 } 5295 } 5296 5297 @Override 5298 public void onDetached() { 5299 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 5300 observer.removeOnTouchModeChangeListener(this); 5301 5302 if (mStartHandle != null) mStartHandle.onDetached(); 5303 if (mEndHandle != null) mEndHandle.onDetached(); 5304 } 5305 5306 @Override 5307 public boolean isActive() { 5308 return mStartHandle != null && mStartHandle.isShowing(); 5309 } 5310 } 5311 5312 private class CorrectionHighlighter { 5313 private final Path mPath = new Path(); 5314 private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 5315 private int mStart, mEnd; 5316 private long mFadingStartTime; 5317 private RectF mTempRectF; 5318 private final static int FADE_OUT_DURATION = 400; 5319 5320 public CorrectionHighlighter() { 5321 mPaint.setCompatibilityScaling(mTextView.getResources().getCompatibilityInfo(). 5322 applicationScale); 5323 mPaint.setStyle(Paint.Style.FILL); 5324 } 5325 5326 public void highlight(CorrectionInfo info) { 5327 mStart = info.getOffset(); 5328 mEnd = mStart + info.getNewText().length(); 5329 mFadingStartTime = SystemClock.uptimeMillis(); 5330 5331 if (mStart < 0 || mEnd < 0) { 5332 stopAnimation(); 5333 } 5334 } 5335 5336 public void draw(Canvas canvas, int cursorOffsetVertical) { 5337 if (updatePath() && updatePaint()) { 5338 if (cursorOffsetVertical != 0) { 5339 canvas.translate(0, cursorOffsetVertical); 5340 } 5341 5342 canvas.drawPath(mPath, mPaint); 5343 5344 if (cursorOffsetVertical != 0) { 5345 canvas.translate(0, -cursorOffsetVertical); 5346 } 5347 invalidate(true); // TODO invalidate cursor region only 5348 } else { 5349 stopAnimation(); 5350 invalidate(false); // TODO invalidate cursor region only 5351 } 5352 } 5353 5354 private boolean updatePaint() { 5355 final long duration = SystemClock.uptimeMillis() - mFadingStartTime; 5356 if (duration > FADE_OUT_DURATION) return false; 5357 5358 final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; 5359 final int highlightColorAlpha = Color.alpha(mTextView.mHighlightColor); 5360 final int color = (mTextView.mHighlightColor & 0x00FFFFFF) + 5361 ((int) (highlightColorAlpha * coef) << 24); 5362 mPaint.setColor(color); 5363 return true; 5364 } 5365 5366 private boolean updatePath() { 5367 final Layout layout = mTextView.getLayout(); 5368 if (layout == null) return false; 5369 5370 // Update in case text is edited while the animation is run 5371 final int length = mTextView.getText().length(); 5372 int start = Math.min(length, mStart); 5373 int end = Math.min(length, mEnd); 5374 5375 mPath.reset(); 5376 layout.getSelectionPath(start, end, mPath); 5377 return true; 5378 } 5379 5380 private void invalidate(boolean delayed) { 5381 if (mTextView.getLayout() == null) return; 5382 5383 if (mTempRectF == null) mTempRectF = new RectF(); 5384 mPath.computeBounds(mTempRectF, false); 5385 5386 int left = mTextView.getCompoundPaddingLeft(); 5387 int top = mTextView.getExtendedPaddingTop() + mTextView.getVerticalOffset(true); 5388 5389 if (delayed) { 5390 mTextView.postInvalidateOnAnimation( 5391 left + (int) mTempRectF.left, top + (int) mTempRectF.top, 5392 left + (int) mTempRectF.right, top + (int) mTempRectF.bottom); 5393 } else { 5394 mTextView.postInvalidate((int) mTempRectF.left, (int) mTempRectF.top, 5395 (int) mTempRectF.right, (int) mTempRectF.bottom); 5396 } 5397 } 5398 5399 private void stopAnimation() { 5400 Editor.this.mCorrectionHighlighter = null; 5401 } 5402 } 5403 5404 private static class ErrorPopup extends PopupWindow { 5405 private boolean mAbove = false; 5406 private final TextView mView; 5407 private int mPopupInlineErrorBackgroundId = 0; 5408 private int mPopupInlineErrorAboveBackgroundId = 0; 5409 5410 ErrorPopup(TextView v, int width, int height) { 5411 super(v, width, height); 5412 mView = v; 5413 // Make sure the TextView has a background set as it will be used the first time it is 5414 // shown and positioned. Initialized with below background, which should have 5415 // dimensions identical to the above version for this to work (and is more likely). 5416 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 5417 com.android.internal.R.styleable.Theme_errorMessageBackground); 5418 mView.setBackgroundResource(mPopupInlineErrorBackgroundId); 5419 } 5420 5421 void fixDirection(boolean above) { 5422 mAbove = above; 5423 5424 if (above) { 5425 mPopupInlineErrorAboveBackgroundId = 5426 getResourceId(mPopupInlineErrorAboveBackgroundId, 5427 com.android.internal.R.styleable.Theme_errorMessageAboveBackground); 5428 } else { 5429 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 5430 com.android.internal.R.styleable.Theme_errorMessageBackground); 5431 } 5432 5433 mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId : 5434 mPopupInlineErrorBackgroundId); 5435 } 5436 5437 private int getResourceId(int currentId, int index) { 5438 if (currentId == 0) { 5439 TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( 5440 R.styleable.Theme); 5441 currentId = styledAttributes.getResourceId(index, 0); 5442 styledAttributes.recycle(); 5443 } 5444 return currentId; 5445 } 5446 5447 @Override 5448 public void update(int x, int y, int w, int h, boolean force) { 5449 super.update(x, y, w, h, force); 5450 5451 boolean above = isAboveAnchor(); 5452 if (above != mAbove) { 5453 fixDirection(above); 5454 } 5455 } 5456 } 5457 5458 static class InputContentType { 5459 int imeOptions = EditorInfo.IME_NULL; 5460 String privateImeOptions; 5461 CharSequence imeActionLabel; 5462 int imeActionId; 5463 Bundle extras; 5464 OnEditorActionListener onEditorActionListener; 5465 boolean enterDown; 5466 LocaleList imeHintLocales; 5467 } 5468 5469 static class InputMethodState { 5470 ExtractedTextRequest mExtractedTextRequest; 5471 final ExtractedText mExtractedText = new ExtractedText(); 5472 int mBatchEditNesting; 5473 boolean mCursorChanged; 5474 boolean mSelectionModeChanged; 5475 boolean mContentChanged; 5476 int mChangedStart, mChangedEnd, mChangedDelta; 5477 } 5478 5479 /** 5480 * @return True iff (start, end) is a valid range within the text. 5481 */ 5482 private static boolean isValidRange(CharSequence text, int start, int end) { 5483 return 0 <= start && start <= end && end <= text.length(); 5484 } 5485 5486 @VisibleForTesting 5487 public SuggestionsPopupWindow getSuggestionsPopupWindowForTesting() { 5488 return mSuggestionsPopupWindow; 5489 } 5490 5491 /** 5492 * An InputFilter that monitors text input to maintain undo history. It does not modify the 5493 * text being typed (and hence always returns null from the filter() method). 5494 */ 5495 public static class UndoInputFilter implements InputFilter { 5496 private final Editor mEditor; 5497 5498 // Whether the current filter pass is directly caused by an end-user text edit. 5499 private boolean mIsUserEdit; 5500 5501 // Whether the text field is handling an IME composition. Must be parceled in case the user 5502 // rotates the screen during composition. 5503 private boolean mHasComposition; 5504 5505 public UndoInputFilter(Editor editor) { 5506 mEditor = editor; 5507 } 5508 5509 public void saveInstanceState(Parcel parcel) { 5510 parcel.writeInt(mIsUserEdit ? 1 : 0); 5511 parcel.writeInt(mHasComposition ? 1 : 0); 5512 } 5513 5514 public void restoreInstanceState(Parcel parcel) { 5515 mIsUserEdit = parcel.readInt() != 0; 5516 mHasComposition = parcel.readInt() != 0; 5517 } 5518 5519 /** 5520 * Signals that a user-triggered edit is starting. 5521 */ 5522 public void beginBatchEdit() { 5523 if (DEBUG_UNDO) Log.d(TAG, "beginBatchEdit"); 5524 mIsUserEdit = true; 5525 } 5526 5527 public void endBatchEdit() { 5528 if (DEBUG_UNDO) Log.d(TAG, "endBatchEdit"); 5529 mIsUserEdit = false; 5530 } 5531 5532 @Override 5533 public CharSequence filter(CharSequence source, int start, int end, 5534 Spanned dest, int dstart, int dend) { 5535 if (DEBUG_UNDO) { 5536 Log.d(TAG, "filter: source=" + source + " (" + start + "-" + end + ") " + 5537 "dest=" + dest + " (" + dstart + "-" + dend + ")"); 5538 } 5539 5540 // Check to see if this edit should be tracked for undo. 5541 if (!canUndoEdit(source, start, end, dest, dstart, dend)) { 5542 return null; 5543 } 5544 5545 // Check for and handle IME composition edits. 5546 if (handleCompositionEdit(source, start, end, dstart)) { 5547 return null; 5548 } 5549 5550 // Handle keyboard edits. 5551 handleKeyboardEdit(source, start, end, dest, dstart, dend); 5552 return null; 5553 } 5554 5555 /** 5556 * Returns true iff the edit was handled, either because it should be ignored or because 5557 * this function created an undo operation for it. 5558 */ 5559 private boolean handleCompositionEdit(CharSequence source, int start, int end, int dstart) { 5560 // Ignore edits while the user is composing. 5561 if (isComposition(source)) { 5562 mHasComposition = true; 5563 return true; 5564 } 5565 final boolean hadComposition = mHasComposition; 5566 mHasComposition = false; 5567 5568 // Check for the transition out of the composing state. 5569 if (hadComposition) { 5570 // If there was no text the user canceled composition. Ignore the edit. 5571 if (start == end) { 5572 return true; 5573 } 5574 5575 // Otherwise the user inserted the composition. 5576 String newText = TextUtils.substring(source, start, end); 5577 EditOperation edit = new EditOperation(mEditor, "", dstart, newText); 5578 recordEdit(edit, false /* forceMerge */); 5579 return true; 5580 } 5581 5582 // This was neither a composition event nor a transition out of composing. 5583 return false; 5584 } 5585 5586 private void handleKeyboardEdit(CharSequence source, int start, int end, 5587 Spanned dest, int dstart, int dend) { 5588 // An application may install a TextWatcher to provide additional modifications after 5589 // the initial input filters run (e.g. a credit card formatter that adds spaces to a 5590 // string). This results in multiple filter() calls for what the user considers to be 5591 // a single operation. Always undo the whole set of changes in one step. 5592 final boolean forceMerge = isInTextWatcher(); 5593 5594 // Build a new operation with all the information from this edit. 5595 String newText = TextUtils.substring(source, start, end); 5596 String oldText = TextUtils.substring(dest, dstart, dend); 5597 EditOperation edit = new EditOperation(mEditor, oldText, dstart, newText); 5598 recordEdit(edit, forceMerge); 5599 } 5600 5601 /** 5602 * Fetches the last undo operation and checks to see if a new edit should be merged into it. 5603 * If forceMerge is true then the new edit is always merged. 5604 */ 5605 private void recordEdit(EditOperation edit, boolean forceMerge) { 5606 // Fetch the last edit operation and attempt to merge in the new edit. 5607 final UndoManager um = mEditor.mUndoManager; 5608 um.beginUpdate("Edit text"); 5609 EditOperation lastEdit = um.getLastOperation( 5610 EditOperation.class, mEditor.mUndoOwner, UndoManager.MERGE_MODE_UNIQUE); 5611 if (lastEdit == null) { 5612 // Add this as the first edit. 5613 if (DEBUG_UNDO) Log.d(TAG, "filter: adding first op " + edit); 5614 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5615 } else if (forceMerge) { 5616 // Forced merges take priority because they could be the result of a non-user-edit 5617 // change and this case should not create a new undo operation. 5618 if (DEBUG_UNDO) Log.d(TAG, "filter: force merge " + edit); 5619 lastEdit.forceMergeWith(edit); 5620 } else if (!mIsUserEdit) { 5621 // An application directly modified the Editable outside of a text edit. Treat this 5622 // as a new change and don't attempt to merge. 5623 if (DEBUG_UNDO) Log.d(TAG, "non-user edit, new op " + edit); 5624 um.commitState(mEditor.mUndoOwner); 5625 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5626 } else if (lastEdit.mergeWith(edit)) { 5627 // Merge succeeded, nothing else to do. 5628 if (DEBUG_UNDO) Log.d(TAG, "filter: merge succeeded, created " + lastEdit); 5629 } else { 5630 // Could not merge with the last edit, so commit the last edit and add this edit. 5631 if (DEBUG_UNDO) Log.d(TAG, "filter: merge failed, adding " + edit); 5632 um.commitState(mEditor.mUndoOwner); 5633 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5634 } 5635 um.endUpdate(); 5636 } 5637 5638 private boolean canUndoEdit(CharSequence source, int start, int end, 5639 Spanned dest, int dstart, int dend) { 5640 if (!mEditor.mAllowUndo) { 5641 if (DEBUG_UNDO) Log.d(TAG, "filter: undo is disabled"); 5642 return false; 5643 } 5644 5645 if (mEditor.mUndoManager.isInUndo()) { 5646 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping, currently performing undo/redo"); 5647 return false; 5648 } 5649 5650 // Text filters run before input operations are applied. However, some input operations 5651 // are invalid and will throw exceptions when applied. This is common in tests. Don't 5652 // attempt to undo invalid operations. 5653 if (!isValidRange(source, start, end) || !isValidRange(dest, dstart, dend)) { 5654 if (DEBUG_UNDO) Log.d(TAG, "filter: invalid op"); 5655 return false; 5656 } 5657 5658 // Earlier filters can rewrite input to be a no-op, for example due to a length limit 5659 // on an input field. Skip no-op changes. 5660 if (start == end && dstart == dend) { 5661 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping no-op"); 5662 return false; 5663 } 5664 5665 return true; 5666 } 5667 5668 private boolean isComposition(CharSequence source) { 5669 if (!(source instanceof Spannable)) { 5670 return false; 5671 } 5672 // This is a composition edit if the source has a non-zero-length composing span. 5673 Spannable text = (Spannable) source; 5674 int composeBegin = EditableInputConnection.getComposingSpanStart(text); 5675 int composeEnd = EditableInputConnection.getComposingSpanEnd(text); 5676 return composeBegin < composeEnd; 5677 } 5678 5679 private boolean isInTextWatcher() { 5680 CharSequence text = mEditor.mTextView.getText(); 5681 return (text instanceof SpannableStringBuilder) 5682 && ((SpannableStringBuilder) text).getTextWatcherDepth() > 0; 5683 } 5684 } 5685 5686 /** 5687 * An operation to undo a single "edit" to a text view. 5688 */ 5689 public static class EditOperation extends UndoOperation<Editor> { 5690 private static final int TYPE_INSERT = 0; 5691 private static final int TYPE_DELETE = 1; 5692 private static final int TYPE_REPLACE = 2; 5693 5694 private int mType; 5695 private String mOldText; 5696 private int mOldTextStart; 5697 private String mNewText; 5698 private int mNewTextStart; 5699 5700 private int mOldCursorPos; 5701 private int mNewCursorPos; 5702 5703 /** 5704 * Constructs an edit operation from a text input operation on editor that replaces the 5705 * oldText starting at dstart with newText. 5706 */ 5707 public EditOperation(Editor editor, String oldText, int dstart, String newText) { 5708 super(editor.mUndoOwner); 5709 mOldText = oldText; 5710 mNewText = newText; 5711 5712 // Determine the type of the edit and store where it occurred. Avoid storing 5713 // irrevelant data (e.g. mNewTextStart for a delete) because that makes the 5714 // merging logic more complex (e.g. merging deletes could lead to mNewTextStart being 5715 // outside the bounds of the final text). 5716 if (mNewText.length() > 0 && mOldText.length() == 0) { 5717 mType = TYPE_INSERT; 5718 mNewTextStart = dstart; 5719 } else if (mNewText.length() == 0 && mOldText.length() > 0) { 5720 mType = TYPE_DELETE; 5721 mOldTextStart = dstart; 5722 } else { 5723 mType = TYPE_REPLACE; 5724 mOldTextStart = mNewTextStart = dstart; 5725 } 5726 5727 // Store cursor data. 5728 mOldCursorPos = editor.mTextView.getSelectionStart(); 5729 mNewCursorPos = dstart + mNewText.length(); 5730 } 5731 5732 public EditOperation(Parcel src, ClassLoader loader) { 5733 super(src, loader); 5734 mType = src.readInt(); 5735 mOldText = src.readString(); 5736 mOldTextStart = src.readInt(); 5737 mNewText = src.readString(); 5738 mNewTextStart = src.readInt(); 5739 mOldCursorPos = src.readInt(); 5740 mNewCursorPos = src.readInt(); 5741 } 5742 5743 @Override 5744 public void writeToParcel(Parcel dest, int flags) { 5745 dest.writeInt(mType); 5746 dest.writeString(mOldText); 5747 dest.writeInt(mOldTextStart); 5748 dest.writeString(mNewText); 5749 dest.writeInt(mNewTextStart); 5750 dest.writeInt(mOldCursorPos); 5751 dest.writeInt(mNewCursorPos); 5752 } 5753 5754 private int getNewTextEnd() { 5755 return mNewTextStart + mNewText.length(); 5756 } 5757 5758 private int getOldTextEnd() { 5759 return mOldTextStart + mOldText.length(); 5760 } 5761 5762 @Override 5763 public void commit() { 5764 } 5765 5766 @Override 5767 public void undo() { 5768 if (DEBUG_UNDO) Log.d(TAG, "undo"); 5769 // Remove the new text and insert the old. 5770 Editor editor = getOwnerData(); 5771 Editable text = (Editable) editor.mTextView.getText(); 5772 modifyText(text, mNewTextStart, getNewTextEnd(), mOldText, mOldTextStart, 5773 mOldCursorPos); 5774 } 5775 5776 @Override 5777 public void redo() { 5778 if (DEBUG_UNDO) Log.d(TAG, "redo"); 5779 // Remove the old text and insert the new. 5780 Editor editor = getOwnerData(); 5781 Editable text = (Editable) editor.mTextView.getText(); 5782 modifyText(text, mOldTextStart, getOldTextEnd(), mNewText, mNewTextStart, 5783 mNewCursorPos); 5784 } 5785 5786 /** 5787 * Attempts to merge this existing operation with a new edit. 5788 * @param edit The new edit operation. 5789 * @return If the merge succeeded, returns true. Otherwise returns false and leaves this 5790 * object unchanged. 5791 */ 5792 private boolean mergeWith(EditOperation edit) { 5793 if (DEBUG_UNDO) { 5794 Log.d(TAG, "mergeWith old " + this); 5795 Log.d(TAG, "mergeWith new " + edit); 5796 } 5797 switch (mType) { 5798 case TYPE_INSERT: 5799 return mergeInsertWith(edit); 5800 case TYPE_DELETE: 5801 return mergeDeleteWith(edit); 5802 case TYPE_REPLACE: 5803 return mergeReplaceWith(edit); 5804 default: 5805 return false; 5806 } 5807 } 5808 5809 private boolean mergeInsertWith(EditOperation edit) { 5810 // Only merge continuous insertions. 5811 if (edit.mType != TYPE_INSERT) { 5812 return false; 5813 } 5814 // Only merge insertions that are contiguous. 5815 if (getNewTextEnd() != edit.mNewTextStart) { 5816 return false; 5817 } 5818 mNewText += edit.mNewText; 5819 mNewCursorPos = edit.mNewCursorPos; 5820 return true; 5821 } 5822 5823 // TODO: Support forward delete. 5824 private boolean mergeDeleteWith(EditOperation edit) { 5825 // Only merge continuous deletes. 5826 if (edit.mType != TYPE_DELETE) { 5827 return false; 5828 } 5829 // Only merge deletions that are contiguous. 5830 if (mOldTextStart != edit.getOldTextEnd()) { 5831 return false; 5832 } 5833 mOldTextStart = edit.mOldTextStart; 5834 mOldText = edit.mOldText + mOldText; 5835 mNewCursorPos = edit.mNewCursorPos; 5836 return true; 5837 } 5838 5839 private boolean mergeReplaceWith(EditOperation edit) { 5840 // Replacements can merge only with adjacent inserts. 5841 if (edit.mType != TYPE_INSERT || getNewTextEnd() != edit.mNewTextStart) { 5842 return false; 5843 } 5844 mOldText += edit.mOldText; 5845 mNewText += edit.mNewText; 5846 mNewCursorPos = edit.mNewCursorPos; 5847 return true; 5848 } 5849 5850 /** 5851 * Forcibly creates a single merged edit operation by simulating the entire text 5852 * contents being replaced. 5853 */ 5854 public void forceMergeWith(EditOperation edit) { 5855 if (DEBUG_UNDO) Log.d(TAG, "forceMerge"); 5856 Editor editor = getOwnerData(); 5857 5858 // Copy the text of the current field. 5859 // NOTE: Using StringBuilder instead of SpannableStringBuilder would be somewhat faster, 5860 // but would require two parallel implementations of modifyText() because Editable and 5861 // StringBuilder do not share an interface for replace/delete/insert. 5862 Editable editable = (Editable) editor.mTextView.getText(); 5863 Editable originalText = new SpannableStringBuilder(editable.toString()); 5864 5865 // Roll back the last operation. 5866 modifyText(originalText, mNewTextStart, getNewTextEnd(), mOldText, mOldTextStart, 5867 mOldCursorPos); 5868 5869 // Clone the text again and apply the new operation. 5870 Editable finalText = new SpannableStringBuilder(editable.toString()); 5871 modifyText(finalText, edit.mOldTextStart, edit.getOldTextEnd(), edit.mNewText, 5872 edit.mNewTextStart, edit.mNewCursorPos); 5873 5874 // Convert this operation into a non-mergeable replacement of the entire string. 5875 mType = TYPE_REPLACE; 5876 mNewText = finalText.toString(); 5877 mNewTextStart = 0; 5878 mOldText = originalText.toString(); 5879 mOldTextStart = 0; 5880 mNewCursorPos = edit.mNewCursorPos; 5881 // mOldCursorPos is unchanged. 5882 } 5883 5884 private static void modifyText(Editable text, int deleteFrom, int deleteTo, 5885 CharSequence newText, int newTextInsertAt, int newCursorPos) { 5886 // Apply the edit if it is still valid. 5887 if (isValidRange(text, deleteFrom, deleteTo) && 5888 newTextInsertAt <= text.length() - (deleteTo - deleteFrom)) { 5889 if (deleteFrom != deleteTo) { 5890 text.delete(deleteFrom, deleteTo); 5891 } 5892 if (newText.length() != 0) { 5893 text.insert(newTextInsertAt, newText); 5894 } 5895 } 5896 // Restore the cursor position. If there wasn't an old cursor (newCursorPos == -1) then 5897 // don't explicitly set it and rely on SpannableStringBuilder to position it. 5898 // TODO: Select all the text that was undone. 5899 if (0 <= newCursorPos && newCursorPos <= text.length()) { 5900 Selection.setSelection(text, newCursorPos); 5901 } 5902 } 5903 5904 private String getTypeString() { 5905 switch (mType) { 5906 case TYPE_INSERT: 5907 return "insert"; 5908 case TYPE_DELETE: 5909 return "delete"; 5910 case TYPE_REPLACE: 5911 return "replace"; 5912 default: 5913 return ""; 5914 } 5915 } 5916 5917 @Override 5918 public String toString() { 5919 return "[mType=" + getTypeString() + ", " + 5920 "mOldText=" + mOldText + ", " + 5921 "mOldTextStart=" + mOldTextStart + ", " + 5922 "mNewText=" + mNewText + ", " + 5923 "mNewTextStart=" + mNewTextStart + ", " + 5924 "mOldCursorPos=" + mOldCursorPos + ", " + 5925 "mNewCursorPos=" + mNewCursorPos + "]"; 5926 } 5927 5928 public static final Parcelable.ClassLoaderCreator<EditOperation> CREATOR 5929 = new Parcelable.ClassLoaderCreator<EditOperation>() { 5930 @Override 5931 public EditOperation createFromParcel(Parcel in) { 5932 return new EditOperation(in, null); 5933 } 5934 5935 @Override 5936 public EditOperation createFromParcel(Parcel in, ClassLoader loader) { 5937 return new EditOperation(in, loader); 5938 } 5939 5940 @Override 5941 public EditOperation[] newArray(int size) { 5942 return new EditOperation[size]; 5943 } 5944 }; 5945 } 5946 5947 /** 5948 * A helper for enabling and handling "PROCESS_TEXT" menu actions. 5949 * These allow external applications to plug into currently selected text. 5950 */ 5951 static final class ProcessTextIntentActionsHandler { 5952 5953 private final Editor mEditor; 5954 private final TextView mTextView; 5955 private final PackageManager mPackageManager; 5956 private final SparseArray<Intent> mAccessibilityIntents = new SparseArray<Intent>(); 5957 private final SparseArray<AccessibilityNodeInfo.AccessibilityAction> mAccessibilityActions 5958 = new SparseArray<AccessibilityNodeInfo.AccessibilityAction>(); 5959 5960 private ProcessTextIntentActionsHandler(Editor editor) { 5961 mEditor = Preconditions.checkNotNull(editor); 5962 mTextView = Preconditions.checkNotNull(mEditor.mTextView); 5963 mPackageManager = Preconditions.checkNotNull( 5964 mTextView.getContext().getPackageManager()); 5965 } 5966 5967 /** 5968 * Adds "PROCESS_TEXT" menu items to the specified menu. 5969 */ 5970 public void onInitializeMenu(Menu menu) { 5971 int i = 0; 5972 for (ResolveInfo resolveInfo : getSupportedActivities()) { 5973 menu.add(Menu.NONE, Menu.NONE, 5974 Editor.MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START + i++, 5975 getLabel(resolveInfo)) 5976 .setIntent(createProcessTextIntentForResolveInfo(resolveInfo)) 5977 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 5978 } 5979 } 5980 5981 /** 5982 * Performs a "PROCESS_TEXT" action if there is one associated with the specified 5983 * menu item. 5984 * 5985 * @return True if the action was performed, false otherwise. 5986 */ 5987 public boolean performMenuItemAction(MenuItem item) { 5988 return fireIntent(item.getIntent()); 5989 } 5990 5991 /** 5992 * Initializes and caches "PROCESS_TEXT" accessibility actions. 5993 */ 5994 public void initializeAccessibilityActions() { 5995 mAccessibilityIntents.clear(); 5996 mAccessibilityActions.clear(); 5997 int i = 0; 5998 for (ResolveInfo resolveInfo : getSupportedActivities()) { 5999 int actionId = TextView.ACCESSIBILITY_ACTION_PROCESS_TEXT_START_ID + i++; 6000 mAccessibilityActions.put( 6001 actionId, 6002 new AccessibilityNodeInfo.AccessibilityAction( 6003 actionId, getLabel(resolveInfo))); 6004 mAccessibilityIntents.put( 6005 actionId, createProcessTextIntentForResolveInfo(resolveInfo)); 6006 } 6007 } 6008 6009 /** 6010 * Adds "PROCESS_TEXT" accessibility actions to the specified accessibility node info. 6011 * NOTE: This needs a prior call to {@link #initializeAccessibilityActions()} to make the 6012 * latest accessibility actions available for this call. 6013 */ 6014 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo nodeInfo) { 6015 for (int i = 0; i < mAccessibilityActions.size(); i++) { 6016 nodeInfo.addAction(mAccessibilityActions.valueAt(i)); 6017 } 6018 } 6019 6020 /** 6021 * Performs a "PROCESS_TEXT" action if there is one associated with the specified 6022 * accessibility action id. 6023 * 6024 * @return True if the action was performed, false otherwise. 6025 */ 6026 public boolean performAccessibilityAction(int actionId) { 6027 return fireIntent(mAccessibilityIntents.get(actionId)); 6028 } 6029 6030 private boolean fireIntent(Intent intent) { 6031 if (intent != null && Intent.ACTION_PROCESS_TEXT.equals(intent.getAction())) { 6032 intent.putExtra(Intent.EXTRA_PROCESS_TEXT, mTextView.getSelectedText()); 6033 mEditor.mPreserveSelection = true; 6034 mTextView.startActivityForResult(intent, TextView.PROCESS_TEXT_REQUEST_CODE); 6035 return true; 6036 } 6037 return false; 6038 } 6039 6040 private List<ResolveInfo> getSupportedActivities() { 6041 PackageManager packageManager = mTextView.getContext().getPackageManager(); 6042 return packageManager.queryIntentActivities(createProcessTextIntent(), 0); 6043 } 6044 6045 private Intent createProcessTextIntentForResolveInfo(ResolveInfo info) { 6046 return createProcessTextIntent() 6047 .putExtra(Intent.EXTRA_PROCESS_TEXT_READONLY, !mTextView.isTextEditable()) 6048 .setClassName(info.activityInfo.packageName, info.activityInfo.name); 6049 } 6050 6051 private Intent createProcessTextIntent() { 6052 return new Intent() 6053 .setAction(Intent.ACTION_PROCESS_TEXT) 6054 .setType("text/plain"); 6055 } 6056 6057 private CharSequence getLabel(ResolveInfo resolveInfo) { 6058 return resolveInfo.loadLabel(mPackageManager); 6059 } 6060 } 6061} 6062