Editor.java revision 15ae7c132866d401be4cdc88ac2d16a104d54b11
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 mPreserveDetachedSelection; 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.hasTransientState() && 380 mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 381 // Since transient state is reference counted make sure it stays matched 382 // with our own calls to it for managing selection. 383 // The action mode callback will set this back again when/if the action mode starts. 384 mTextView.setHasTransientState(false); 385 386 // We had an active selection from before, start the selection mode. 387 startSelectionActionMode(); 388 } 389 390 getPositionListener().addSubscriber(mCursorAnchorInfoNotifier, true); 391 resumeBlink(); 392 } 393 394 void onDetachedFromWindow() { 395 getPositionListener().removeSubscriber(mCursorAnchorInfoNotifier); 396 397 if (mError != null) { 398 hideError(); 399 } 400 401 suspendBlink(); 402 403 if (mInsertionPointCursorController != null) { 404 mInsertionPointCursorController.onDetached(); 405 } 406 407 if (mSelectionModifierCursorController != null) { 408 mSelectionModifierCursorController.onDetached(); 409 } 410 411 if (mShowSuggestionRunnable != null) { 412 mTextView.removeCallbacks(mShowSuggestionRunnable); 413 } 414 415 // Cancel the single tap delayed runnable. 416 if (mInsertionActionModeRunnable != null) { 417 mTextView.removeCallbacks(mInsertionActionModeRunnable); 418 } 419 420 mTextView.removeCallbacks(mShowFloatingToolbar); 421 422 discardTextDisplayLists(); 423 424 if (mSpellChecker != null) { 425 mSpellChecker.closeSession(); 426 // Forces the creation of a new SpellChecker next time this window is created. 427 // Will handle the cases where the settings has been changed in the meantime. 428 mSpellChecker = null; 429 } 430 431 hideCursorAndSpanControllers(); 432 stopTextActionModeWithPreservingSelection(); 433 mTemporaryDetach = false; 434 } 435 436 private void discardTextDisplayLists() { 437 if (mTextRenderNodes != null) { 438 for (int i = 0; i < mTextRenderNodes.length; i++) { 439 RenderNode displayList = mTextRenderNodes[i] != null 440 ? mTextRenderNodes[i].renderNode : null; 441 if (displayList != null && displayList.isValid()) { 442 displayList.discardDisplayList(); 443 } 444 } 445 } 446 } 447 448 private void showError() { 449 if (mTextView.getWindowToken() == null) { 450 mShowErrorAfterAttach = true; 451 return; 452 } 453 454 if (mErrorPopup == null) { 455 LayoutInflater inflater = LayoutInflater.from(mTextView.getContext()); 456 final TextView err = (TextView) inflater.inflate( 457 com.android.internal.R.layout.textview_hint, null); 458 459 final float scale = mTextView.getResources().getDisplayMetrics().density; 460 mErrorPopup = new ErrorPopup(err, (int)(200 * scale + 0.5f), (int)(50 * scale + 0.5f)); 461 mErrorPopup.setFocusable(false); 462 // The user is entering text, so the input method is needed. We 463 // don't want the popup to be displayed on top of it. 464 mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); 465 } 466 467 TextView tv = (TextView) mErrorPopup.getContentView(); 468 chooseSize(mErrorPopup, mError, tv); 469 tv.setText(mError); 470 471 mErrorPopup.showAsDropDown(mTextView, getErrorX(), getErrorY()); 472 mErrorPopup.fixDirection(mErrorPopup.isAboveAnchor()); 473 } 474 475 public void setError(CharSequence error, Drawable icon) { 476 mError = TextUtils.stringOrSpannedString(error); 477 mErrorWasChanged = true; 478 479 if (mError == null) { 480 setErrorIcon(null); 481 if (mErrorPopup != null) { 482 if (mErrorPopup.isShowing()) { 483 mErrorPopup.dismiss(); 484 } 485 486 mErrorPopup = null; 487 } 488 mShowErrorAfterAttach = false; 489 } else { 490 setErrorIcon(icon); 491 if (mTextView.isFocused()) { 492 showError(); 493 } 494 } 495 } 496 497 private void setErrorIcon(Drawable icon) { 498 Drawables dr = mTextView.mDrawables; 499 if (dr == null) { 500 mTextView.mDrawables = dr = new Drawables(mTextView.getContext()); 501 } 502 dr.setErrorDrawable(icon, mTextView); 503 504 mTextView.resetResolvedDrawables(); 505 mTextView.invalidate(); 506 mTextView.requestLayout(); 507 } 508 509 private void hideError() { 510 if (mErrorPopup != null) { 511 if (mErrorPopup.isShowing()) { 512 mErrorPopup.dismiss(); 513 } 514 } 515 516 mShowErrorAfterAttach = false; 517 } 518 519 /** 520 * Returns the X offset to make the pointy top of the error point 521 * at the middle of the error icon. 522 */ 523 private int getErrorX() { 524 /* 525 * The "25" is the distance between the point and the right edge 526 * of the background 527 */ 528 final float scale = mTextView.getResources().getDisplayMetrics().density; 529 530 final Drawables dr = mTextView.mDrawables; 531 532 final int layoutDirection = mTextView.getLayoutDirection(); 533 int errorX; 534 int offset; 535 switch (layoutDirection) { 536 default: 537 case View.LAYOUT_DIRECTION_LTR: 538 offset = - (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f); 539 errorX = mTextView.getWidth() - mErrorPopup.getWidth() - 540 mTextView.getPaddingRight() + offset; 541 break; 542 case View.LAYOUT_DIRECTION_RTL: 543 offset = (dr != null ? dr.mDrawableSizeLeft : 0) / 2 - (int) (25 * scale + 0.5f); 544 errorX = mTextView.getPaddingLeft() + offset; 545 break; 546 } 547 return errorX; 548 } 549 550 /** 551 * Returns the Y offset to make the pointy top of the error point 552 * at the bottom of the error icon. 553 */ 554 private int getErrorY() { 555 /* 556 * Compound, not extended, because the icon is not clipped 557 * if the text height is smaller. 558 */ 559 final int compoundPaddingTop = mTextView.getCompoundPaddingTop(); 560 int vspace = mTextView.getBottom() - mTextView.getTop() - 561 mTextView.getCompoundPaddingBottom() - compoundPaddingTop; 562 563 final Drawables dr = mTextView.mDrawables; 564 565 final int layoutDirection = mTextView.getLayoutDirection(); 566 int height; 567 switch (layoutDirection) { 568 default: 569 case View.LAYOUT_DIRECTION_LTR: 570 height = (dr != null ? dr.mDrawableHeightRight : 0); 571 break; 572 case View.LAYOUT_DIRECTION_RTL: 573 height = (dr != null ? dr.mDrawableHeightLeft : 0); 574 break; 575 } 576 577 int icontop = compoundPaddingTop + (vspace - height) / 2; 578 579 /* 580 * The "2" is the distance between the point and the top edge 581 * of the background. 582 */ 583 final float scale = mTextView.getResources().getDisplayMetrics().density; 584 return icontop + height - mTextView.getHeight() - (int) (2 * scale + 0.5f); 585 } 586 587 void createInputContentTypeIfNeeded() { 588 if (mInputContentType == null) { 589 mInputContentType = new InputContentType(); 590 } 591 } 592 593 void createInputMethodStateIfNeeded() { 594 if (mInputMethodState == null) { 595 mInputMethodState = new InputMethodState(); 596 } 597 } 598 599 boolean isCursorVisible() { 600 // The default value is true, even when there is no associated Editor 601 return mCursorVisible && mTextView.isTextEditable(); 602 } 603 604 void prepareCursorControllers() { 605 boolean windowSupportsHandles = false; 606 607 ViewGroup.LayoutParams params = mTextView.getRootView().getLayoutParams(); 608 if (params instanceof WindowManager.LayoutParams) { 609 WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params; 610 windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW 611 || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW; 612 } 613 614 boolean enabled = windowSupportsHandles && mTextView.getLayout() != null; 615 mInsertionControllerEnabled = enabled && isCursorVisible(); 616 mSelectionControllerEnabled = enabled && mTextView.textCanBeSelected(); 617 618 if (!mInsertionControllerEnabled) { 619 hideInsertionPointCursorController(); 620 if (mInsertionPointCursorController != null) { 621 mInsertionPointCursorController.onDetached(); 622 mInsertionPointCursorController = null; 623 } 624 } 625 626 if (!mSelectionControllerEnabled) { 627 stopTextActionMode(); 628 if (mSelectionModifierCursorController != null) { 629 mSelectionModifierCursorController.onDetached(); 630 mSelectionModifierCursorController = null; 631 } 632 } 633 } 634 635 void hideInsertionPointCursorController() { 636 if (mInsertionPointCursorController != null) { 637 mInsertionPointCursorController.hide(); 638 } 639 } 640 641 /** 642 * Hides the insertion and span controllers. 643 */ 644 void hideCursorAndSpanControllers() { 645 hideCursorControllers(); 646 hideSpanControllers(); 647 } 648 649 private void hideSpanControllers() { 650 if (mSpanController != null) { 651 mSpanController.hide(); 652 } 653 } 654 655 private void hideCursorControllers() { 656 // When mTextView is not ExtractEditText, we need to distinguish two kinds of focus-lost. 657 // One is the true focus lost where suggestions pop-up (if any) should be dismissed, and the 658 // other is an side effect of showing the suggestions pop-up itself. We use isShowingUp() 659 // to distinguish one from the other. 660 if (mSuggestionsPopupWindow != null && ((mTextView.isInExtractedMode()) || 661 !mSuggestionsPopupWindow.isShowingUp())) { 662 // Should be done before hide insertion point controller since it triggers a show of it 663 mSuggestionsPopupWindow.hide(); 664 } 665 hideInsertionPointCursorController(); 666 } 667 668 /** 669 * Create new SpellCheckSpans on the modified region. 670 */ 671 private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) { 672 // Remove spans whose adjacent characters are text not punctuation 673 mTextView.removeAdjacentSuggestionSpans(start); 674 mTextView.removeAdjacentSuggestionSpans(end); 675 676 if (mTextView.isTextEditable() && mTextView.isSuggestionsEnabled() && 677 !(mTextView.isInExtractedMode())) { 678 if (mSpellChecker == null && createSpellChecker) { 679 mSpellChecker = new SpellChecker(mTextView); 680 } 681 if (mSpellChecker != null) { 682 mSpellChecker.spellCheck(start, end); 683 } 684 } 685 } 686 687 void onScreenStateChanged(int screenState) { 688 switch (screenState) { 689 case View.SCREEN_STATE_ON: 690 resumeBlink(); 691 break; 692 case View.SCREEN_STATE_OFF: 693 suspendBlink(); 694 break; 695 } 696 } 697 698 private void suspendBlink() { 699 if (mBlink != null) { 700 mBlink.cancel(); 701 } 702 } 703 704 private void resumeBlink() { 705 if (mBlink != null) { 706 mBlink.uncancel(); 707 makeBlink(); 708 } 709 } 710 711 void adjustInputType(boolean password, boolean passwordInputType, 712 boolean webPasswordInputType, boolean numberPasswordInputType) { 713 // mInputType has been set from inputType, possibly modified by mInputMethod. 714 // Specialize mInputType to [web]password if we have a text class and the original input 715 // type was a password. 716 if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 717 if (password || passwordInputType) { 718 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 719 | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD; 720 } 721 if (webPasswordInputType) { 722 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 723 | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 724 } 725 } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) { 726 if (numberPasswordInputType) { 727 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 728 | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD; 729 } 730 } 731 } 732 733 private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) { 734 int wid = tv.getPaddingLeft() + tv.getPaddingRight(); 735 int ht = tv.getPaddingTop() + tv.getPaddingBottom(); 736 737 int defaultWidthInPixels = mTextView.getResources().getDimensionPixelSize( 738 com.android.internal.R.dimen.textview_error_popup_default_width); 739 Layout l = new StaticLayout(text, tv.getPaint(), defaultWidthInPixels, 740 Layout.Alignment.ALIGN_NORMAL, 1, 0, true); 741 float max = 0; 742 for (int i = 0; i < l.getLineCount(); i++) { 743 max = Math.max(max, l.getLineWidth(i)); 744 } 745 746 /* 747 * Now set the popup size to be big enough for the text plus the border capped 748 * to DEFAULT_MAX_POPUP_WIDTH 749 */ 750 pop.setWidth(wid + (int) Math.ceil(max)); 751 pop.setHeight(ht + l.getHeight()); 752 } 753 754 void setFrame() { 755 if (mErrorPopup != null) { 756 TextView tv = (TextView) mErrorPopup.getContentView(); 757 chooseSize(mErrorPopup, mError, tv); 758 mErrorPopup.update(mTextView, getErrorX(), getErrorY(), 759 mErrorPopup.getWidth(), mErrorPopup.getHeight()); 760 } 761 } 762 763 private int getWordStart(int offset) { 764 // FIXME - For this and similar methods we're not doing anything to check if there's 765 // a LocaleSpan in the text, this may be something we should try handling or checking for. 766 int retOffset = getWordIteratorWithText().prevBoundary(offset); 767 if (getWordIteratorWithText().isOnPunctuation(retOffset)) { 768 // On punctuation boundary or within group of punctuation, find punctuation start. 769 retOffset = getWordIteratorWithText().getPunctuationBeginning(offset); 770 } else { 771 // Not on a punctuation boundary, find the word start. 772 retOffset = getWordIteratorWithText().getPrevWordBeginningOnTwoWordsBoundary(offset); 773 } 774 if (retOffset == BreakIterator.DONE) { 775 return offset; 776 } 777 return retOffset; 778 } 779 780 private int getWordEnd(int offset) { 781 int retOffset = getWordIteratorWithText().nextBoundary(offset); 782 if (getWordIteratorWithText().isAfterPunctuation(retOffset)) { 783 // On punctuation boundary or within group of punctuation, find punctuation end. 784 retOffset = getWordIteratorWithText().getPunctuationEnd(offset); 785 } else { 786 // Not on a punctuation boundary, find the word end. 787 retOffset = getWordIteratorWithText().getNextWordEndOnTwoWordBoundary(offset); 788 } 789 if (retOffset == BreakIterator.DONE) { 790 return offset; 791 } 792 return retOffset; 793 } 794 795 private boolean needsToSelectAllToSelectWordOrParagraph() { 796 if (mTextView.hasPasswordTransformationMethod()) { 797 // Always select all on a password field. 798 // Cut/copy menu entries are not available for passwords, but being able to select all 799 // is however useful to delete or paste to replace the entire content. 800 return true; 801 } 802 803 int inputType = mTextView.getInputType(); 804 int klass = inputType & InputType.TYPE_MASK_CLASS; 805 int variation = inputType & InputType.TYPE_MASK_VARIATION; 806 807 // Specific text field types: select the entire text for these 808 if (klass == InputType.TYPE_CLASS_NUMBER || 809 klass == InputType.TYPE_CLASS_PHONE || 810 klass == InputType.TYPE_CLASS_DATETIME || 811 variation == InputType.TYPE_TEXT_VARIATION_URI || 812 variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS || 813 variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS || 814 variation == InputType.TYPE_TEXT_VARIATION_FILTER) { 815 return true; 816 } 817 return false; 818 } 819 820 /** 821 * Adjusts selection to the word under last touch offset. Return true if the operation was 822 * successfully performed. 823 */ 824 private boolean selectCurrentWord() { 825 if (!mTextView.canSelectText()) { 826 return false; 827 } 828 829 if (needsToSelectAllToSelectWordOrParagraph()) { 830 return mTextView.selectAllText(); 831 } 832 833 long lastTouchOffsets = getLastTouchOffsets(); 834 final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 835 final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 836 837 // Safety check in case standard touch event handling has been bypassed 838 if (minOffset < 0 || minOffset > mTextView.getText().length()) return false; 839 if (maxOffset < 0 || maxOffset > mTextView.getText().length()) return false; 840 841 int selectionStart, selectionEnd; 842 843 // If a URLSpan (web address, email, phone...) is found at that position, select it. 844 URLSpan[] urlSpans = ((Spanned) mTextView.getText()). 845 getSpans(minOffset, maxOffset, URLSpan.class); 846 if (urlSpans.length >= 1) { 847 URLSpan urlSpan = urlSpans[0]; 848 selectionStart = ((Spanned) mTextView.getText()).getSpanStart(urlSpan); 849 selectionEnd = ((Spanned) mTextView.getText()).getSpanEnd(urlSpan); 850 } else { 851 // FIXME - We should check if there's a LocaleSpan in the text, this may be 852 // something we should try handling or checking for. 853 final WordIterator wordIterator = getWordIterator(); 854 wordIterator.setCharSequence(mTextView.getText(), minOffset, maxOffset); 855 856 selectionStart = wordIterator.getBeginning(minOffset); 857 selectionEnd = wordIterator.getEnd(maxOffset); 858 859 if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE || 860 selectionStart == selectionEnd) { 861 // Possible when the word iterator does not properly handle the text's language 862 long range = getCharClusterRange(minOffset); 863 selectionStart = TextUtils.unpackRangeStartFromLong(range); 864 selectionEnd = TextUtils.unpackRangeEndFromLong(range); 865 } 866 } 867 868 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 869 return selectionEnd > selectionStart; 870 } 871 872 /** 873 * Adjusts selection to the paragraph under last touch offset. Return true if the operation was 874 * successfully performed. 875 */ 876 private boolean selectCurrentParagraph() { 877 if (!mTextView.canSelectText()) { 878 return false; 879 } 880 881 if (needsToSelectAllToSelectWordOrParagraph()) { 882 return mTextView.selectAllText(); 883 } 884 885 long lastTouchOffsets = getLastTouchOffsets(); 886 final int minLastTouchOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 887 final int maxLastTouchOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 888 889 final long paragraphsRange = getParagraphsRange(minLastTouchOffset, maxLastTouchOffset); 890 final int start = TextUtils.unpackRangeStartFromLong(paragraphsRange); 891 final int end = TextUtils.unpackRangeEndFromLong(paragraphsRange); 892 if (start < end) { 893 Selection.setSelection((Spannable) mTextView.getText(), start, end); 894 return true; 895 } 896 return false; 897 } 898 899 /** 900 * Get the minimum range of paragraphs that contains startOffset and endOffset. 901 */ 902 private long getParagraphsRange(int startOffset, int endOffset) { 903 final Layout layout = mTextView.getLayout(); 904 if (layout == null) { 905 return TextUtils.packRangeInLong(-1, -1); 906 } 907 final CharSequence text = mTextView.getText(); 908 int minLine = layout.getLineForOffset(startOffset); 909 // Search paragraph start. 910 while (minLine > 0) { 911 final int prevLineEndOffset = layout.getLineEnd(minLine - 1); 912 if (text.charAt(prevLineEndOffset - 1) == '\n') { 913 break; 914 } 915 minLine--; 916 } 917 int maxLine = layout.getLineForOffset(endOffset); 918 // Search paragraph end. 919 while (maxLine < layout.getLineCount() - 1) { 920 final int lineEndOffset = layout.getLineEnd(maxLine); 921 if (text.charAt(lineEndOffset - 1) == '\n') { 922 break; 923 } 924 maxLine++; 925 } 926 return TextUtils.packRangeInLong(layout.getLineStart(minLine), layout.getLineEnd(maxLine)); 927 } 928 929 void onLocaleChanged() { 930 // Will be re-created on demand in getWordIterator with the proper new locale 931 mWordIterator = null; 932 mWordIteratorWithText = null; 933 } 934 935 /** 936 * @hide 937 */ 938 public WordIterator getWordIterator() { 939 if (mWordIterator == null) { 940 mWordIterator = new WordIterator(mTextView.getTextServicesLocale()); 941 } 942 return mWordIterator; 943 } 944 945 private WordIterator getWordIteratorWithText() { 946 if (mWordIteratorWithText == null) { 947 mWordIteratorWithText = new WordIterator(mTextView.getTextServicesLocale()); 948 mUpdateWordIteratorText = true; 949 } 950 if (mUpdateWordIteratorText) { 951 // FIXME - Shouldn't copy all of the text as only the area of the text relevant 952 // to the user's selection is needed. A possible solution would be to 953 // copy some number N of characters near the selection and then when the 954 // user approaches N then we'd do another copy of the next N characters. 955 CharSequence text = mTextView.getText(); 956 mWordIteratorWithText.setCharSequence(text, 0, text.length()); 957 mUpdateWordIteratorText = false; 958 } 959 return mWordIteratorWithText; 960 } 961 962 private int getNextCursorOffset(int offset, boolean findAfterGivenOffset) { 963 final Layout layout = mTextView.getLayout(); 964 if (layout == null) return offset; 965 return findAfterGivenOffset == layout.isRtlCharAt(offset) ? 966 layout.getOffsetToLeftOf(offset) : layout.getOffsetToRightOf(offset); 967 } 968 969 private long getCharClusterRange(int offset) { 970 final int textLength = mTextView.getText().length(); 971 if (offset < textLength) { 972 final int clusterEndOffset = getNextCursorOffset(offset, true); 973 return TextUtils.packRangeInLong( 974 getNextCursorOffset(clusterEndOffset, false), clusterEndOffset); 975 } 976 if (offset - 1 >= 0) { 977 final int clusterStartOffset = getNextCursorOffset(offset, false); 978 return TextUtils.packRangeInLong(clusterStartOffset, 979 getNextCursorOffset(clusterStartOffset, true)); 980 } 981 return TextUtils.packRangeInLong(offset, offset); 982 } 983 984 private boolean touchPositionIsInSelection() { 985 int selectionStart = mTextView.getSelectionStart(); 986 int selectionEnd = mTextView.getSelectionEnd(); 987 988 if (selectionStart == selectionEnd) { 989 return false; 990 } 991 992 if (selectionStart > selectionEnd) { 993 int tmp = selectionStart; 994 selectionStart = selectionEnd; 995 selectionEnd = tmp; 996 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 997 } 998 999 SelectionModifierCursorController selectionController = getSelectionController(); 1000 int minOffset = selectionController.getMinTouchOffset(); 1001 int maxOffset = selectionController.getMaxTouchOffset(); 1002 1003 return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); 1004 } 1005 1006 private PositionListener getPositionListener() { 1007 if (mPositionListener == null) { 1008 mPositionListener = new PositionListener(); 1009 } 1010 return mPositionListener; 1011 } 1012 1013 private interface TextViewPositionListener { 1014 public void updatePosition(int parentPositionX, int parentPositionY, 1015 boolean parentPositionChanged, boolean parentScrolled); 1016 } 1017 1018 private boolean isPositionVisible(final float positionX, final float positionY) { 1019 synchronized (TEMP_POSITION) { 1020 final float[] position = TEMP_POSITION; 1021 position[0] = positionX; 1022 position[1] = positionY; 1023 View view = mTextView; 1024 1025 while (view != null) { 1026 if (view != mTextView) { 1027 // Local scroll is already taken into account in positionX/Y 1028 position[0] -= view.getScrollX(); 1029 position[1] -= view.getScrollY(); 1030 } 1031 1032 if (position[0] < 0 || position[1] < 0 || 1033 position[0] > view.getWidth() || position[1] > view.getHeight()) { 1034 return false; 1035 } 1036 1037 if (!view.getMatrix().isIdentity()) { 1038 view.getMatrix().mapPoints(position); 1039 } 1040 1041 position[0] += view.getLeft(); 1042 position[1] += view.getTop(); 1043 1044 final ViewParent parent = view.getParent(); 1045 if (parent instanceof View) { 1046 view = (View) parent; 1047 } else { 1048 // We've reached the ViewRoot, stop iterating 1049 view = null; 1050 } 1051 } 1052 } 1053 1054 // We've been able to walk up the view hierarchy and the position was never clipped 1055 return true; 1056 } 1057 1058 private boolean isOffsetVisible(int offset) { 1059 Layout layout = mTextView.getLayout(); 1060 if (layout == null) return false; 1061 1062 final int line = layout.getLineForOffset(offset); 1063 final int lineBottom = layout.getLineBottom(line); 1064 final int primaryHorizontal = (int) layout.getPrimaryHorizontal(offset); 1065 return isPositionVisible(primaryHorizontal + mTextView.viewportToContentHorizontalOffset(), 1066 lineBottom + mTextView.viewportToContentVerticalOffset()); 1067 } 1068 1069 /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed 1070 * in the view. Returns false when the position is in the empty space of left/right of text. 1071 */ 1072 private boolean isPositionOnText(float x, float y) { 1073 Layout layout = mTextView.getLayout(); 1074 if (layout == null) return false; 1075 1076 final int line = mTextView.getLineAtCoordinate(y); 1077 x = mTextView.convertToLocalHorizontalCoordinate(x); 1078 1079 if (x < layout.getLineLeft(line)) return false; 1080 if (x > layout.getLineRight(line)) return false; 1081 return true; 1082 } 1083 1084 private void startDragAndDrop() { 1085 final int start = mTextView.getSelectionStart(); 1086 final int end = mTextView.getSelectionEnd(); 1087 CharSequence selectedText = mTextView.getTransformedText(start, end); 1088 ClipData data = ClipData.newPlainText(null, selectedText); 1089 DragLocalState localState = new DragLocalState(mTextView, start, end); 1090 mTextView.startDragAndDrop(data, getTextThumbnailBuilder(start, end), localState, 1091 View.DRAG_FLAG_GLOBAL); 1092 stopTextActionMode(); 1093 if (hasSelectionController()) { 1094 getSelectionController().resetTouchOffsets(); 1095 } 1096 } 1097 1098 public boolean performLongClick(boolean handled) { 1099 // Long press in empty space moves cursor and starts the insertion action mode. 1100 if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) && 1101 mInsertionControllerEnabled) { 1102 final int offset = mTextView.getOffsetForPosition(mLastDownPositionX, 1103 mLastDownPositionY); 1104 Selection.setSelection((Spannable) mTextView.getText(), offset); 1105 getInsertionController().show(); 1106 mIsInsertionActionModeStartPending = true; 1107 handled = true; 1108 } 1109 1110 if (!handled && mTextActionMode != null) { 1111 if (touchPositionIsInSelection()) { 1112 startDragAndDrop(); 1113 } else { 1114 stopTextActionMode(); 1115 selectCurrentWordAndStartDrag(); 1116 } 1117 handled = true; 1118 } 1119 1120 // Start a new selection 1121 if (!handled) { 1122 handled = selectCurrentWordAndStartDrag(); 1123 } 1124 1125 return handled; 1126 } 1127 1128 private long getLastTouchOffsets() { 1129 SelectionModifierCursorController selectionController = getSelectionController(); 1130 final int minOffset = selectionController.getMinTouchOffset(); 1131 final int maxOffset = selectionController.getMaxTouchOffset(); 1132 return TextUtils.packRangeInLong(minOffset, maxOffset); 1133 } 1134 1135 void onFocusChanged(boolean focused, int direction) { 1136 mShowCursor = SystemClock.uptimeMillis(); 1137 ensureEndedBatchEdit(); 1138 1139 if (focused) { 1140 int selStart = mTextView.getSelectionStart(); 1141 int selEnd = mTextView.getSelectionEnd(); 1142 1143 // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection 1144 // mode for these, unless there was a specific selection already started. 1145 final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 && 1146 selEnd == mTextView.getText().length(); 1147 1148 mCreatedWithASelection = mFrozenWithFocus && mTextView.hasSelection() && 1149 !isFocusHighlighted; 1150 1151 if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { 1152 // If a tap was used to give focus to that view, move cursor at tap position. 1153 // Has to be done before onTakeFocus, which can be overloaded. 1154 final int lastTapPosition = getLastTapPosition(); 1155 if (lastTapPosition >= 0) { 1156 Selection.setSelection((Spannable) mTextView.getText(), lastTapPosition); 1157 } 1158 1159 // Note this may have to be moved out of the Editor class 1160 MovementMethod mMovement = mTextView.getMovementMethod(); 1161 if (mMovement != null) { 1162 mMovement.onTakeFocus(mTextView, (Spannable) mTextView.getText(), direction); 1163 } 1164 1165 // The DecorView does not have focus when the 'Done' ExtractEditText button is 1166 // pressed. Since it is the ViewAncestor's mView, it requests focus before 1167 // ExtractEditText clears focus, which gives focus to the ExtractEditText. 1168 // This special case ensure that we keep current selection in that case. 1169 // It would be better to know why the DecorView does not have focus at that time. 1170 if (((mTextView.isInExtractedMode()) || mSelectionMoved) && 1171 selStart >= 0 && selEnd >= 0) { 1172 /* 1173 * Someone intentionally set the selection, so let them 1174 * do whatever it is that they wanted to do instead of 1175 * the default on-focus behavior. We reset the selection 1176 * here instead of just skipping the onTakeFocus() call 1177 * because some movement methods do something other than 1178 * just setting the selection in theirs and we still 1179 * need to go through that path. 1180 */ 1181 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 1182 } 1183 1184 if (mSelectAllOnFocus) { 1185 mTextView.selectAllText(); 1186 } 1187 1188 mTouchFocusSelected = true; 1189 } 1190 1191 mFrozenWithFocus = false; 1192 mSelectionMoved = false; 1193 1194 if (mError != null) { 1195 showError(); 1196 } 1197 1198 makeBlink(); 1199 } else { 1200 if (mError != null) { 1201 hideError(); 1202 } 1203 // Don't leave us in the middle of a batch edit. 1204 mTextView.onEndBatchEdit(); 1205 1206 if (mTextView.isInExtractedMode()) { 1207 hideCursorAndSpanControllers(); 1208 stopTextActionModeWithPreservingSelection(); 1209 } else { 1210 hideCursorAndSpanControllers(); 1211 if (mTemporaryDetach) { 1212 stopTextActionModeWithPreservingSelection(); 1213 } else { 1214 stopTextActionMode(); 1215 } 1216 downgradeEasyCorrectionSpans(); 1217 } 1218 // No need to create the controller 1219 if (mSelectionModifierCursorController != null) { 1220 mSelectionModifierCursorController.resetTouchOffsets(); 1221 } 1222 } 1223 } 1224 1225 /** 1226 * Downgrades to simple suggestions all the easy correction spans that are not a spell check 1227 * span. 1228 */ 1229 private void downgradeEasyCorrectionSpans() { 1230 CharSequence text = mTextView.getText(); 1231 if (text instanceof Spannable) { 1232 Spannable spannable = (Spannable) text; 1233 SuggestionSpan[] suggestionSpans = spannable.getSpans(0, 1234 spannable.length(), SuggestionSpan.class); 1235 for (int i = 0; i < suggestionSpans.length; i++) { 1236 int flags = suggestionSpans[i].getFlags(); 1237 if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0 1238 && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) { 1239 flags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 1240 suggestionSpans[i].setFlags(flags); 1241 } 1242 } 1243 } 1244 } 1245 1246 void sendOnTextChanged(int start, int after) { 1247 updateSpellCheckSpans(start, start + after, false); 1248 1249 // Flip flag to indicate the word iterator needs to have the text reset. 1250 mUpdateWordIteratorText = true; 1251 1252 // Hide the controllers as soon as text is modified (typing, procedural...) 1253 // We do not hide the span controllers, since they can be added when a new text is 1254 // inserted into the text view (voice IME). 1255 hideCursorControllers(); 1256 // Reset drag accelerator. 1257 if (mSelectionModifierCursorController != null) { 1258 mSelectionModifierCursorController.resetTouchOffsets(); 1259 } 1260 stopTextActionMode(); 1261 } 1262 1263 private int getLastTapPosition() { 1264 // No need to create the controller at that point, no last tap position saved 1265 if (mSelectionModifierCursorController != null) { 1266 int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); 1267 if (lastTapPosition >= 0) { 1268 // Safety check, should not be possible. 1269 if (lastTapPosition > mTextView.getText().length()) { 1270 lastTapPosition = mTextView.getText().length(); 1271 } 1272 return lastTapPosition; 1273 } 1274 } 1275 1276 return -1; 1277 } 1278 1279 void onWindowFocusChanged(boolean hasWindowFocus) { 1280 if (hasWindowFocus) { 1281 if (mBlink != null) { 1282 mBlink.uncancel(); 1283 makeBlink(); 1284 } 1285 final InputMethodManager imm = InputMethodManager.peekInstance(); 1286 if (mTextView.hasSelection() && !extractedTextModeWillBeStarted()) { 1287 startSelectionActionMode(); 1288 } 1289 } else { 1290 if (mBlink != null) { 1291 mBlink.cancel(); 1292 } 1293 if (mInputContentType != null) { 1294 mInputContentType.enterDown = false; 1295 } 1296 // Order matters! Must be done before onParentLostFocus to rely on isShowingUp 1297 hideCursorAndSpanControllers(); 1298 stopTextActionModeWithPreservingSelection(); 1299 if (mSuggestionsPopupWindow != null) { 1300 mSuggestionsPopupWindow.onParentLostFocus(); 1301 } 1302 1303 // Don't leave us in the middle of a batch edit. Same as in onFocusChanged 1304 ensureEndedBatchEdit(); 1305 } 1306 } 1307 1308 private void updateTapState(MotionEvent event) { 1309 final int action = event.getActionMasked(); 1310 if (action == MotionEvent.ACTION_DOWN) { 1311 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 1312 // Detect double tap and triple click. 1313 if (((mTapState == TAP_STATE_FIRST_TAP) 1314 || ((mTapState == TAP_STATE_DOUBLE_TAP) && isMouse)) 1315 && (SystemClock.uptimeMillis() - mLastTouchUpTime) <= 1316 ViewConfiguration.getDoubleTapTimeout()) { 1317 if (mTapState == TAP_STATE_FIRST_TAP) { 1318 mTapState = TAP_STATE_DOUBLE_TAP; 1319 } else { 1320 mTapState = TAP_STATE_TRIPLE_CLICK; 1321 } 1322 } else { 1323 mTapState = TAP_STATE_FIRST_TAP; 1324 } 1325 } 1326 if (action == MotionEvent.ACTION_UP) { 1327 mLastTouchUpTime = SystemClock.uptimeMillis(); 1328 } 1329 } 1330 1331 private boolean shouldFilterOutTouchEvent(MotionEvent event) { 1332 if (!event.isFromSource(InputDevice.SOURCE_MOUSE)) { 1333 return false; 1334 } 1335 final boolean primaryButtonStateChanged = 1336 ((mLastButtonState ^ event.getButtonState()) & MotionEvent.BUTTON_PRIMARY) != 0; 1337 final int action = event.getActionMasked(); 1338 if ((action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_UP) 1339 && !primaryButtonStateChanged) { 1340 return true; 1341 } 1342 if (action == MotionEvent.ACTION_MOVE 1343 && !event.isButtonPressed(MotionEvent.BUTTON_PRIMARY)) { 1344 return true; 1345 } 1346 return false; 1347 } 1348 1349 void onTouchEvent(MotionEvent event) { 1350 final boolean filterOutEvent = shouldFilterOutTouchEvent(event); 1351 mLastButtonState = event.getButtonState(); 1352 if (filterOutEvent) { 1353 if (event.getActionMasked() == MotionEvent.ACTION_UP) { 1354 mDiscardNextActionUp = true; 1355 } 1356 return; 1357 } 1358 updateTapState(event); 1359 updateFloatingToolbarVisibility(event); 1360 1361 if (hasSelectionController()) { 1362 getSelectionController().onTouchEvent(event); 1363 } 1364 1365 if (mShowSuggestionRunnable != null) { 1366 mTextView.removeCallbacks(mShowSuggestionRunnable); 1367 mShowSuggestionRunnable = null; 1368 } 1369 1370 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 1371 mLastDownPositionX = event.getX(); 1372 mLastDownPositionY = event.getY(); 1373 1374 // Reset this state; it will be re-set if super.onTouchEvent 1375 // causes focus to move to the view. 1376 mTouchFocusSelected = false; 1377 mIgnoreActionUpEvent = false; 1378 } 1379 } 1380 1381 private void updateFloatingToolbarVisibility(MotionEvent event) { 1382 if (mTextActionMode != null) { 1383 switch (event.getActionMasked()) { 1384 case MotionEvent.ACTION_MOVE: 1385 hideFloatingToolbar(); 1386 break; 1387 case MotionEvent.ACTION_UP: // fall through 1388 case MotionEvent.ACTION_CANCEL: 1389 showFloatingToolbar(); 1390 } 1391 } 1392 } 1393 1394 private void hideFloatingToolbar() { 1395 if (mTextActionMode != null) { 1396 mTextView.removeCallbacks(mShowFloatingToolbar); 1397 mTextActionMode.hide(ActionMode.DEFAULT_HIDE_DURATION); 1398 } 1399 } 1400 1401 private void showFloatingToolbar() { 1402 if (mTextActionMode != null) { 1403 // Delay "show" so it doesn't interfere with click confirmations 1404 // or double-clicks that could "dismiss" the floating toolbar. 1405 int delay = ViewConfiguration.getDoubleTapTimeout(); 1406 mTextView.postDelayed(mShowFloatingToolbar, delay); 1407 } 1408 } 1409 1410 public void beginBatchEdit() { 1411 mInBatchEditControllers = true; 1412 final InputMethodState ims = mInputMethodState; 1413 if (ims != null) { 1414 int nesting = ++ims.mBatchEditNesting; 1415 if (nesting == 1) { 1416 ims.mCursorChanged = false; 1417 ims.mChangedDelta = 0; 1418 if (ims.mContentChanged) { 1419 // We already have a pending change from somewhere else, 1420 // so turn this into a full update. 1421 ims.mChangedStart = 0; 1422 ims.mChangedEnd = mTextView.getText().length(); 1423 } else { 1424 ims.mChangedStart = EXTRACT_UNKNOWN; 1425 ims.mChangedEnd = EXTRACT_UNKNOWN; 1426 ims.mContentChanged = false; 1427 } 1428 mUndoInputFilter.beginBatchEdit(); 1429 mTextView.onBeginBatchEdit(); 1430 } 1431 } 1432 } 1433 1434 public void endBatchEdit() { 1435 mInBatchEditControllers = false; 1436 final InputMethodState ims = mInputMethodState; 1437 if (ims != null) { 1438 int nesting = --ims.mBatchEditNesting; 1439 if (nesting == 0) { 1440 finishBatchEdit(ims); 1441 } 1442 } 1443 } 1444 1445 void ensureEndedBatchEdit() { 1446 final InputMethodState ims = mInputMethodState; 1447 if (ims != null && ims.mBatchEditNesting != 0) { 1448 ims.mBatchEditNesting = 0; 1449 finishBatchEdit(ims); 1450 } 1451 } 1452 1453 void finishBatchEdit(final InputMethodState ims) { 1454 mTextView.onEndBatchEdit(); 1455 mUndoInputFilter.endBatchEdit(); 1456 1457 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1458 mTextView.updateAfterEdit(); 1459 reportExtractedText(); 1460 } else if (ims.mCursorChanged) { 1461 // Cheesy way to get us to report the current cursor location. 1462 mTextView.invalidateCursor(); 1463 } 1464 // sendUpdateSelection knows to avoid sending if the selection did 1465 // not actually change. 1466 sendUpdateSelection(); 1467 } 1468 1469 static final int EXTRACT_NOTHING = -2; 1470 static final int EXTRACT_UNKNOWN = -1; 1471 1472 boolean extractText(ExtractedTextRequest request, ExtractedText outText) { 1473 return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, 1474 EXTRACT_UNKNOWN, outText); 1475 } 1476 1477 private boolean extractTextInternal(@Nullable ExtractedTextRequest request, 1478 int partialStartOffset, int partialEndOffset, int delta, 1479 @Nullable ExtractedText outText) { 1480 if (request == null || outText == null) { 1481 return false; 1482 } 1483 1484 final CharSequence content = mTextView.getText(); 1485 if (content == null) { 1486 return false; 1487 } 1488 1489 if (partialStartOffset != EXTRACT_NOTHING) { 1490 final int N = content.length(); 1491 if (partialStartOffset < 0) { 1492 outText.partialStartOffset = outText.partialEndOffset = -1; 1493 partialStartOffset = 0; 1494 partialEndOffset = N; 1495 } else { 1496 // Now use the delta to determine the actual amount of text 1497 // we need. 1498 partialEndOffset += delta; 1499 // Adjust offsets to ensure we contain full spans. 1500 if (content instanceof Spanned) { 1501 Spanned spanned = (Spanned)content; 1502 Object[] spans = spanned.getSpans(partialStartOffset, 1503 partialEndOffset, ParcelableSpan.class); 1504 int i = spans.length; 1505 while (i > 0) { 1506 i--; 1507 int j = spanned.getSpanStart(spans[i]); 1508 if (j < partialStartOffset) partialStartOffset = j; 1509 j = spanned.getSpanEnd(spans[i]); 1510 if (j > partialEndOffset) partialEndOffset = j; 1511 } 1512 } 1513 outText.partialStartOffset = partialStartOffset; 1514 outText.partialEndOffset = partialEndOffset - delta; 1515 1516 if (partialStartOffset > N) { 1517 partialStartOffset = N; 1518 } else if (partialStartOffset < 0) { 1519 partialStartOffset = 0; 1520 } 1521 if (partialEndOffset > N) { 1522 partialEndOffset = N; 1523 } else if (partialEndOffset < 0) { 1524 partialEndOffset = 0; 1525 } 1526 } 1527 if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) { 1528 outText.text = content.subSequence(partialStartOffset, 1529 partialEndOffset); 1530 } else { 1531 outText.text = TextUtils.substring(content, partialStartOffset, 1532 partialEndOffset); 1533 } 1534 } else { 1535 outText.partialStartOffset = 0; 1536 outText.partialEndOffset = 0; 1537 outText.text = ""; 1538 } 1539 outText.flags = 0; 1540 if (MetaKeyKeyListener.getMetaState(content, MetaKeyKeyListener.META_SELECTING) != 0) { 1541 outText.flags |= ExtractedText.FLAG_SELECTING; 1542 } 1543 if (mTextView.isSingleLine()) { 1544 outText.flags |= ExtractedText.FLAG_SINGLE_LINE; 1545 } 1546 outText.startOffset = 0; 1547 outText.selectionStart = mTextView.getSelectionStart(); 1548 outText.selectionEnd = mTextView.getSelectionEnd(); 1549 return true; 1550 } 1551 1552 boolean reportExtractedText() { 1553 final Editor.InputMethodState ims = mInputMethodState; 1554 if (ims != null) { 1555 final boolean contentChanged = ims.mContentChanged; 1556 if (contentChanged || ims.mSelectionModeChanged) { 1557 ims.mContentChanged = false; 1558 ims.mSelectionModeChanged = false; 1559 final ExtractedTextRequest req = ims.mExtractedTextRequest; 1560 if (req != null) { 1561 InputMethodManager imm = InputMethodManager.peekInstance(); 1562 if (imm != null) { 1563 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1564 "Retrieving extracted start=" + ims.mChangedStart + 1565 " end=" + ims.mChangedEnd + 1566 " delta=" + ims.mChangedDelta); 1567 if (ims.mChangedStart < 0 && !contentChanged) { 1568 ims.mChangedStart = EXTRACT_NOTHING; 1569 } 1570 if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, 1571 ims.mChangedDelta, ims.mExtractedText)) { 1572 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1573 "Reporting extracted start=" + 1574 ims.mExtractedText.partialStartOffset + 1575 " end=" + ims.mExtractedText.partialEndOffset + 1576 ": " + ims.mExtractedText.text); 1577 1578 imm.updateExtractedText(mTextView, req.token, ims.mExtractedText); 1579 ims.mChangedStart = EXTRACT_UNKNOWN; 1580 ims.mChangedEnd = EXTRACT_UNKNOWN; 1581 ims.mChangedDelta = 0; 1582 ims.mContentChanged = false; 1583 return true; 1584 } 1585 } 1586 } 1587 } 1588 } 1589 return false; 1590 } 1591 1592 private void sendUpdateSelection() { 1593 if (null != mInputMethodState && mInputMethodState.mBatchEditNesting <= 0) { 1594 final InputMethodManager imm = InputMethodManager.peekInstance(); 1595 if (null != imm) { 1596 final int selectionStart = mTextView.getSelectionStart(); 1597 final int selectionEnd = mTextView.getSelectionEnd(); 1598 int candStart = -1; 1599 int candEnd = -1; 1600 if (mTextView.getText() instanceof Spannable) { 1601 final Spannable sp = (Spannable) mTextView.getText(); 1602 candStart = EditableInputConnection.getComposingSpanStart(sp); 1603 candEnd = EditableInputConnection.getComposingSpanEnd(sp); 1604 } 1605 // InputMethodManager#updateSelection skips sending the message if 1606 // none of the parameters have changed since the last time we called it. 1607 imm.updateSelection(mTextView, 1608 selectionStart, selectionEnd, candStart, candEnd); 1609 } 1610 } 1611 } 1612 1613 void onDraw(Canvas canvas, Layout layout, Path highlight, Paint highlightPaint, 1614 int cursorOffsetVertical) { 1615 final int selectionStart = mTextView.getSelectionStart(); 1616 final int selectionEnd = mTextView.getSelectionEnd(); 1617 1618 final InputMethodState ims = mInputMethodState; 1619 if (ims != null && ims.mBatchEditNesting == 0) { 1620 InputMethodManager imm = InputMethodManager.peekInstance(); 1621 if (imm != null) { 1622 if (imm.isActive(mTextView)) { 1623 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1624 // We are in extract mode and the content has changed 1625 // in some way... just report complete new text to the 1626 // input method. 1627 reportExtractedText(); 1628 } 1629 } 1630 } 1631 } 1632 1633 if (mCorrectionHighlighter != null) { 1634 mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); 1635 } 1636 1637 if (highlight != null && selectionStart == selectionEnd && mCursorCount > 0) { 1638 drawCursor(canvas, cursorOffsetVertical); 1639 // Rely on the drawable entirely, do not draw the cursor line. 1640 // Has to be done after the IMM related code above which relies on the highlight. 1641 highlight = null; 1642 } 1643 1644 if (mTextView.canHaveDisplayList() && canvas.isHardwareAccelerated()) { 1645 drawHardwareAccelerated(canvas, layout, highlight, highlightPaint, 1646 cursorOffsetVertical); 1647 } else { 1648 layout.draw(canvas, highlight, highlightPaint, cursorOffsetVertical); 1649 } 1650 } 1651 1652 private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight, 1653 Paint highlightPaint, int cursorOffsetVertical) { 1654 final long lineRange = layout.getLineRangeForDraw(canvas); 1655 int firstLine = TextUtils.unpackRangeStartFromLong(lineRange); 1656 int lastLine = TextUtils.unpackRangeEndFromLong(lineRange); 1657 if (lastLine < 0) return; 1658 1659 layout.drawBackground(canvas, highlight, highlightPaint, cursorOffsetVertical, 1660 firstLine, lastLine); 1661 1662 if (layout instanceof DynamicLayout) { 1663 if (mTextRenderNodes == null) { 1664 mTextRenderNodes = ArrayUtils.emptyArray(TextRenderNode.class); 1665 } 1666 1667 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1668 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1669 int[] blockIndices = dynamicLayout.getBlockIndices(); 1670 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1671 final int indexFirstChangedBlock = dynamicLayout.getIndexFirstChangedBlock(); 1672 1673 int endOfPreviousBlock = -1; 1674 int searchStartIndex = 0; 1675 for (int i = 0; i < numberOfBlocks; i++) { 1676 int blockEndLine = blockEndLines[i]; 1677 int blockIndex = blockIndices[i]; 1678 1679 final boolean blockIsInvalid = blockIndex == DynamicLayout.INVALID_BLOCK_INDEX; 1680 if (blockIsInvalid) { 1681 blockIndex = getAvailableDisplayListIndex(blockIndices, numberOfBlocks, 1682 searchStartIndex); 1683 // Note how dynamic layout's internal block indices get updated from Editor 1684 blockIndices[i] = blockIndex; 1685 if (mTextRenderNodes[blockIndex] != null) { 1686 mTextRenderNodes[blockIndex].isDirty = true; 1687 } 1688 searchStartIndex = blockIndex + 1; 1689 } 1690 1691 if (mTextRenderNodes[blockIndex] == null) { 1692 mTextRenderNodes[blockIndex] = 1693 new TextRenderNode("Text " + blockIndex); 1694 } 1695 1696 final boolean blockDisplayListIsInvalid = mTextRenderNodes[blockIndex].needsRecord(); 1697 RenderNode blockDisplayList = mTextRenderNodes[blockIndex].renderNode; 1698 if (i >= indexFirstChangedBlock || blockDisplayListIsInvalid) { 1699 final int blockBeginLine = endOfPreviousBlock + 1; 1700 final int top = layout.getLineTop(blockBeginLine); 1701 final int bottom = layout.getLineBottom(blockEndLine); 1702 int left = 0; 1703 int right = mTextView.getWidth(); 1704 if (mTextView.getHorizontallyScrolling()) { 1705 float min = Float.MAX_VALUE; 1706 float max = Float.MIN_VALUE; 1707 for (int line = blockBeginLine; line <= blockEndLine; line++) { 1708 min = Math.min(min, layout.getLineLeft(line)); 1709 max = Math.max(max, layout.getLineRight(line)); 1710 } 1711 left = (int) min; 1712 right = (int) (max + 0.5f); 1713 } 1714 1715 // Rebuild display list if it is invalid 1716 if (blockDisplayListIsInvalid) { 1717 final DisplayListCanvas displayListCanvas = blockDisplayList.start( 1718 right - left, bottom - top); 1719 try { 1720 // drawText is always relative to TextView's origin, this translation 1721 // brings this range of text back to the top left corner of the viewport 1722 displayListCanvas.translate(-left, -top); 1723 layout.drawText(displayListCanvas, blockBeginLine, blockEndLine); 1724 mTextRenderNodes[blockIndex].isDirty = false; 1725 // No need to untranslate, previous context is popped after 1726 // drawDisplayList 1727 } finally { 1728 blockDisplayList.end(displayListCanvas); 1729 // Same as drawDisplayList below, handled by our TextView's parent 1730 blockDisplayList.setClipToBounds(false); 1731 } 1732 } 1733 1734 // Valid disply list whose index is >= indexFirstChangedBlock 1735 // only needs to update its drawing location. 1736 blockDisplayList.setLeftTopRightBottom(left, top, right, bottom); 1737 } 1738 1739 ((DisplayListCanvas) canvas).drawRenderNode(blockDisplayList); 1740 1741 endOfPreviousBlock = blockEndLine; 1742 } 1743 1744 dynamicLayout.setIndexFirstChangedBlock(numberOfBlocks); 1745 } else { 1746 // Boring layout is used for empty and hint text 1747 layout.drawText(canvas, firstLine, lastLine); 1748 } 1749 } 1750 1751 private int getAvailableDisplayListIndex(int[] blockIndices, int numberOfBlocks, 1752 int searchStartIndex) { 1753 int length = mTextRenderNodes.length; 1754 for (int i = searchStartIndex; i < length; i++) { 1755 boolean blockIndexFound = false; 1756 for (int j = 0; j < numberOfBlocks; j++) { 1757 if (blockIndices[j] == i) { 1758 blockIndexFound = true; 1759 break; 1760 } 1761 } 1762 if (blockIndexFound) continue; 1763 return i; 1764 } 1765 1766 // No available index found, the pool has to grow 1767 mTextRenderNodes = GrowingArrayUtils.append(mTextRenderNodes, length, null); 1768 return length; 1769 } 1770 1771 private void drawCursor(Canvas canvas, int cursorOffsetVertical) { 1772 final boolean translate = cursorOffsetVertical != 0; 1773 if (translate) canvas.translate(0, cursorOffsetVertical); 1774 for (int i = 0; i < mCursorCount; i++) { 1775 mCursorDrawable[i].draw(canvas); 1776 } 1777 if (translate) canvas.translate(0, -cursorOffsetVertical); 1778 } 1779 1780 /** 1781 * Invalidates all the sub-display lists that overlap the specified character range 1782 */ 1783 void invalidateTextDisplayList(Layout layout, int start, int end) { 1784 if (mTextRenderNodes != null && layout instanceof DynamicLayout) { 1785 final int firstLine = layout.getLineForOffset(start); 1786 final int lastLine = layout.getLineForOffset(end); 1787 1788 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1789 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1790 int[] blockIndices = dynamicLayout.getBlockIndices(); 1791 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1792 1793 int i = 0; 1794 // Skip the blocks before firstLine 1795 while (i < numberOfBlocks) { 1796 if (blockEndLines[i] >= firstLine) break; 1797 i++; 1798 } 1799 1800 // Invalidate all subsequent blocks until lastLine is passed 1801 while (i < numberOfBlocks) { 1802 final int blockIndex = blockIndices[i]; 1803 if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX) { 1804 mTextRenderNodes[blockIndex].isDirty = true; 1805 } 1806 if (blockEndLines[i] >= lastLine) break; 1807 i++; 1808 } 1809 } 1810 } 1811 1812 void invalidateTextDisplayList() { 1813 if (mTextRenderNodes != null) { 1814 for (int i = 0; i < mTextRenderNodes.length; i++) { 1815 if (mTextRenderNodes[i] != null) mTextRenderNodes[i].isDirty = true; 1816 } 1817 } 1818 } 1819 1820 void updateCursorsPositions() { 1821 if (mTextView.mCursorDrawableRes == 0) { 1822 mCursorCount = 0; 1823 return; 1824 } 1825 1826 Layout layout = getActiveLayout(); 1827 final int offset = mTextView.getSelectionStart(); 1828 final int line = layout.getLineForOffset(offset); 1829 final int top = layout.getLineTop(line); 1830 final int bottom = layout.getLineTop(line + 1); 1831 1832 mCursorCount = layout.isLevelBoundary(offset) ? 2 : 1; 1833 1834 int middle = bottom; 1835 if (mCursorCount == 2) { 1836 // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)} 1837 middle = (top + bottom) >> 1; 1838 } 1839 1840 boolean clamped = layout.shouldClampCursor(line); 1841 updateCursorPosition(0, top, middle, layout.getPrimaryHorizontal(offset, clamped)); 1842 1843 if (mCursorCount == 2) { 1844 updateCursorPosition(1, middle, bottom, layout.getSecondaryHorizontal(offset, clamped)); 1845 } 1846 } 1847 1848 void refreshTextActionMode() { 1849 if (extractedTextModeWillBeStarted()) { 1850 return; 1851 } 1852 final boolean hasSelection = mTextView.hasSelection(); 1853 final SelectionModifierCursorController selectionController = getSelectionController(); 1854 final InsertionPointCursorController insertionController = getInsertionController(); 1855 if ((selectionController != null && selectionController.isCursorBeingModified()) 1856 || (insertionController != null && insertionController.isCursorBeingModified())) { 1857 // ActionMode should be managed by the currently active cursor controller. 1858 return; 1859 } 1860 if (hasSelection) { 1861 if (mTextActionMode == null || selectionController == null 1862 || !selectionController.isActive()) { 1863 // Avoid dismissing the selection if it exists. 1864 stopTextActionModeWithPreservingSelection(); 1865 startSelectionActionMode(); 1866 } else { 1867 mTextActionMode.invalidateContentRect(); 1868 } 1869 } else { 1870 // Insertion action mode is started only when insertion controller is explicitly 1871 // activated. 1872 if (insertionController == null || !insertionController.isActive()) { 1873 stopTextActionMode(); 1874 } else if (mTextActionMode != null) { 1875 mTextActionMode.invalidateContentRect(); 1876 } 1877 } 1878 } 1879 1880 /** 1881 * Start an Insertion action mode. 1882 */ 1883 void startInsertionActionMode() { 1884 if (mInsertionActionModeRunnable != null) { 1885 mTextView.removeCallbacks(mInsertionActionModeRunnable); 1886 } 1887 if (extractedTextModeWillBeStarted()) { 1888 return; 1889 } 1890 stopTextActionMode(); 1891 1892 ActionMode.Callback actionModeCallback = 1893 new TextActionModeCallback(false /* hasSelection */); 1894 mTextActionMode = mTextView.startActionMode( 1895 actionModeCallback, ActionMode.TYPE_FLOATING); 1896 if (mTextActionMode != null && getInsertionController() != null) { 1897 getInsertionController().show(); 1898 } 1899 } 1900 1901 /** 1902 * Starts a Selection Action Mode with the current selection and ensures the selection handles 1903 * are shown if there is a selection. This should be used when the mode is started from a 1904 * non-touch event. 1905 * 1906 * @return true if the selection mode was actually started. 1907 */ 1908 private boolean startSelectionActionMode() { 1909 boolean selectionStarted = startSelectionActionModeInternal(); 1910 if (selectionStarted) { 1911 getSelectionController().show(); 1912 } 1913 return selectionStarted; 1914 } 1915 1916 /** 1917 * If the TextView allows text selection, selects the current word when no existing selection 1918 * was available and starts a drag. 1919 * 1920 * @return true if the drag was started. 1921 */ 1922 private boolean selectCurrentWordAndStartDrag() { 1923 if (mInsertionActionModeRunnable != null) { 1924 mTextView.removeCallbacks(mInsertionActionModeRunnable); 1925 } 1926 if (extractedTextModeWillBeStarted()) { 1927 return false; 1928 } 1929 if (!checkField()) { 1930 return false; 1931 } 1932 if (!mTextView.hasSelection() && !selectCurrentWord()) { 1933 // No selection and cannot select a word. 1934 return false; 1935 } 1936 stopTextActionModeWithPreservingSelection(); 1937 getSelectionController().enterDrag( 1938 SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_WORD); 1939 return true; 1940 } 1941 1942 /** 1943 * Checks whether a selection can be performed on the current TextView. 1944 * 1945 * @return true if a selection can be performed 1946 */ 1947 boolean checkField() { 1948 if (!mTextView.canSelectText() || !mTextView.requestFocus()) { 1949 Log.w(TextView.LOG_TAG, 1950 "TextView does not support text selection. Selection cancelled."); 1951 return false; 1952 } 1953 return true; 1954 } 1955 1956 private boolean startSelectionActionModeInternal() { 1957 if (extractedTextModeWillBeStarted()) { 1958 return false; 1959 } 1960 if (mTextActionMode != null) { 1961 // Text action mode is already started 1962 mTextActionMode.invalidate(); 1963 return false; 1964 } 1965 1966 if (!checkField() || !mTextView.hasSelection()) { 1967 return false; 1968 } 1969 1970 ActionMode.Callback actionModeCallback = 1971 new TextActionModeCallback(true /* hasSelection */); 1972 mTextActionMode = mTextView.startActionMode(actionModeCallback, ActionMode.TYPE_FLOATING); 1973 1974 final boolean selectionStarted = mTextActionMode != null; 1975 if (selectionStarted && !mTextView.isTextSelectable() && mShowSoftInputOnFocus) { 1976 // Show the IME to be able to replace text, except when selecting non editable text. 1977 final InputMethodManager imm = InputMethodManager.peekInstance(); 1978 if (imm != null) { 1979 imm.showSoftInput(mTextView, 0, null); 1980 } 1981 } 1982 return selectionStarted; 1983 } 1984 1985 boolean extractedTextModeWillBeStarted() { 1986 if (!(mTextView.isInExtractedMode())) { 1987 final InputMethodManager imm = InputMethodManager.peekInstance(); 1988 return imm != null && imm.isFullscreenMode(); 1989 } 1990 return false; 1991 } 1992 1993 /** 1994 * @return <code>true</code> if it's reasonable to offer to show suggestions depending on 1995 * the current cursor position or selection range. This method is consistent with the 1996 * method to show suggestions {@link SuggestionsPopupWindow#updateSuggestions}. 1997 */ 1998 private boolean shouldOfferToShowSuggestions() { 1999 CharSequence text = mTextView.getText(); 2000 if (!(text instanceof Spannable)) return false; 2001 2002 final Spannable spannable = (Spannable) text; 2003 final int selectionStart = mTextView.getSelectionStart(); 2004 final int selectionEnd = mTextView.getSelectionEnd(); 2005 final SuggestionSpan[] suggestionSpans = spannable.getSpans(selectionStart, selectionEnd, 2006 SuggestionSpan.class); 2007 if (suggestionSpans.length == 0) { 2008 return false; 2009 } 2010 if (selectionStart == selectionEnd) { 2011 // Spans overlap the cursor. 2012 for (int i = 0; i < suggestionSpans.length; i++) { 2013 if (suggestionSpans[i].getSuggestions().length > 0) { 2014 return true; 2015 } 2016 } 2017 return false; 2018 } 2019 int minSpanStart = mTextView.getText().length(); 2020 int maxSpanEnd = 0; 2021 int unionOfSpansCoveringSelectionStartStart = mTextView.getText().length(); 2022 int unionOfSpansCoveringSelectionStartEnd = 0; 2023 boolean hasValidSuggestions = false; 2024 for (int i = 0; i < suggestionSpans.length; i++) { 2025 final int spanStart = spannable.getSpanStart(suggestionSpans[i]); 2026 final int spanEnd = spannable.getSpanEnd(suggestionSpans[i]); 2027 minSpanStart = Math.min(minSpanStart, spanStart); 2028 maxSpanEnd = Math.max(maxSpanEnd, spanEnd); 2029 if (selectionStart < spanStart || selectionStart > spanEnd) { 2030 // The span doesn't cover the current selection start point. 2031 continue; 2032 } 2033 hasValidSuggestions = 2034 hasValidSuggestions || suggestionSpans[i].getSuggestions().length > 0; 2035 unionOfSpansCoveringSelectionStartStart = 2036 Math.min(unionOfSpansCoveringSelectionStartStart, spanStart); 2037 unionOfSpansCoveringSelectionStartEnd = 2038 Math.max(unionOfSpansCoveringSelectionStartEnd, spanEnd); 2039 } 2040 if (!hasValidSuggestions) { 2041 return false; 2042 } 2043 if (unionOfSpansCoveringSelectionStartStart >= unionOfSpansCoveringSelectionStartEnd) { 2044 // No spans cover the selection start point. 2045 return false; 2046 } 2047 if (minSpanStart < unionOfSpansCoveringSelectionStartStart 2048 || maxSpanEnd > unionOfSpansCoveringSelectionStartEnd) { 2049 // There is a span that is not covered by the union. In this case, we soouldn't offer 2050 // to show suggestions as it's confusing. 2051 return false; 2052 } 2053 return true; 2054 } 2055 2056 /** 2057 * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with 2058 * {@link SuggestionSpan#FLAG_EASY_CORRECT} set. 2059 */ 2060 private boolean isCursorInsideEasyCorrectionSpan() { 2061 Spannable spannable = (Spannable) mTextView.getText(); 2062 SuggestionSpan[] suggestionSpans = spannable.getSpans(mTextView.getSelectionStart(), 2063 mTextView.getSelectionEnd(), SuggestionSpan.class); 2064 for (int i = 0; i < suggestionSpans.length; i++) { 2065 if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) { 2066 return true; 2067 } 2068 } 2069 return false; 2070 } 2071 2072 void onTouchUpEvent(MotionEvent event) { 2073 boolean selectAllGotFocus = mSelectAllOnFocus && mTextView.didTouchFocusSelect(); 2074 hideCursorAndSpanControllers(); 2075 stopTextActionMode(); 2076 CharSequence text = mTextView.getText(); 2077 if (!selectAllGotFocus && text.length() > 0) { 2078 // Move cursor 2079 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 2080 Selection.setSelection((Spannable) text, offset); 2081 if (mSpellChecker != null) { 2082 // When the cursor moves, the word that was typed may need spell check 2083 mSpellChecker.onSelectionChanged(); 2084 } 2085 2086 if (!extractedTextModeWillBeStarted()) { 2087 if (isCursorInsideEasyCorrectionSpan()) { 2088 // Cancel the single tap delayed runnable. 2089 if (mInsertionActionModeRunnable != null) { 2090 mTextView.removeCallbacks(mInsertionActionModeRunnable); 2091 } 2092 2093 mShowSuggestionRunnable = new Runnable() { 2094 public void run() { 2095 showSuggestions(); 2096 } 2097 }; 2098 // removeCallbacks is performed on every touch 2099 mTextView.postDelayed(mShowSuggestionRunnable, 2100 ViewConfiguration.getDoubleTapTimeout()); 2101 } else if (hasInsertionController()) { 2102 getInsertionController().show(); 2103 } 2104 } 2105 } 2106 } 2107 2108 protected void stopTextActionMode() { 2109 if (mTextActionMode != null) { 2110 // This will hide the mSelectionModifierCursorController 2111 mTextActionMode.finish(); 2112 } 2113 } 2114 2115 private void stopTextActionModeWithPreservingSelection() { 2116 mPreserveDetachedSelection = true; 2117 stopTextActionMode(); 2118 mPreserveDetachedSelection = false; 2119 } 2120 2121 /** 2122 * @return True if this view supports insertion handles. 2123 */ 2124 boolean hasInsertionController() { 2125 return mInsertionControllerEnabled; 2126 } 2127 2128 /** 2129 * @return True if this view supports selection handles. 2130 */ 2131 boolean hasSelectionController() { 2132 return mSelectionControllerEnabled; 2133 } 2134 2135 InsertionPointCursorController getInsertionController() { 2136 if (!mInsertionControllerEnabled) { 2137 return null; 2138 } 2139 2140 if (mInsertionPointCursorController == null) { 2141 mInsertionPointCursorController = new InsertionPointCursorController(); 2142 2143 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 2144 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 2145 } 2146 2147 return mInsertionPointCursorController; 2148 } 2149 2150 SelectionModifierCursorController getSelectionController() { 2151 if (!mSelectionControllerEnabled) { 2152 return null; 2153 } 2154 2155 if (mSelectionModifierCursorController == null) { 2156 mSelectionModifierCursorController = new SelectionModifierCursorController(); 2157 2158 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 2159 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 2160 } 2161 2162 return mSelectionModifierCursorController; 2163 } 2164 2165 /** 2166 * @hide 2167 */ 2168 @VisibleForTesting 2169 public Drawable[] getCursorDrawable() { 2170 return mCursorDrawable; 2171 } 2172 2173 private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) { 2174 if (mCursorDrawable[cursorIndex] == null) 2175 mCursorDrawable[cursorIndex] = mTextView.getContext().getDrawable( 2176 mTextView.mCursorDrawableRes); 2177 final Drawable drawable = mCursorDrawable[cursorIndex]; 2178 final int left = clampCursorHorizontalPosition(drawable, horizontal); 2179 final int width = drawable.getIntrinsicWidth(); 2180 drawable.setBounds(left, top - mTempRect.top, left + width, 2181 bottom + mTempRect.bottom); 2182 } 2183 2184 /** 2185 * Return clamped position for the cursor. If the cursor is within the boundaries of the view, 2186 * then it is offset with the left padding of the cursor drawable. If the cursor is at 2187 * the beginning or the end of the text then its drawable edge is aligned with left or right of 2188 * the view boundary. 2189 * 2190 * @param drawable Cursor drawable. 2191 * @param horizontal Horizontal position for the cursor. 2192 * @return The clamped horizontal position for the cursor. 2193 */ 2194 private final int clampCursorHorizontalPosition(final Drawable drawable, float 2195 horizontal) { 2196 horizontal = Math.max(0.5f, horizontal - 0.5f); 2197 if (mTempRect == null) mTempRect = new Rect(); 2198 drawable.getPadding(mTempRect); 2199 int scrollX = mTextView.getScrollX(); 2200 float horizontalDiff = horizontal - scrollX; 2201 int viewClippedWidth = mTextView.getWidth() - mTextView.getCompoundPaddingLeft() 2202 - mTextView.getCompoundPaddingRight(); 2203 2204 final int left; 2205 if (horizontalDiff >= (viewClippedWidth - 1f)) { 2206 // at the rightmost position 2207 final int cursorWidth = drawable.getIntrinsicWidth(); 2208 left = viewClippedWidth + scrollX - (cursorWidth - mTempRect.right); 2209 } else if (Math.abs(horizontalDiff) <= 1f) { 2210 // at the leftmost position 2211 left = scrollX - mTempRect.left; 2212 } else { 2213 left = (int) horizontal - mTempRect.left; 2214 } 2215 return left; 2216 } 2217 2218 /** 2219 * Called by the framework in response to a text auto-correction (such as fixing a typo using a 2220 * a dictionary) from the current input method, provided by it calling 2221 * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default 2222 * implementation flashes the background of the corrected word to provide feedback to the user. 2223 * 2224 * @param info The auto correct info about the text that was corrected. 2225 */ 2226 public void onCommitCorrection(CorrectionInfo info) { 2227 if (mCorrectionHighlighter == null) { 2228 mCorrectionHighlighter = new CorrectionHighlighter(); 2229 } else { 2230 mCorrectionHighlighter.invalidate(false); 2231 } 2232 2233 mCorrectionHighlighter.highlight(info); 2234 } 2235 2236 void showSuggestions() { 2237 if (mSuggestionsPopupWindow == null) { 2238 mSuggestionsPopupWindow = new SuggestionsPopupWindow(); 2239 } 2240 hideCursorAndSpanControllers(); 2241 stopTextActionMode(); 2242 mSuggestionsPopupWindow.show(); 2243 } 2244 2245 void onScrollChanged() { 2246 if (mPositionListener != null) { 2247 mPositionListener.onScrollChanged(); 2248 } 2249 if (mTextActionMode != null) { 2250 mTextActionMode.invalidateContentRect(); 2251 } 2252 } 2253 2254 /** 2255 * @return True when the TextView isFocused and has a valid zero-length selection (cursor). 2256 */ 2257 private boolean shouldBlink() { 2258 if (!isCursorVisible() || !mTextView.isFocused()) return false; 2259 2260 final int start = mTextView.getSelectionStart(); 2261 if (start < 0) return false; 2262 2263 final int end = mTextView.getSelectionEnd(); 2264 if (end < 0) return false; 2265 2266 return start == end; 2267 } 2268 2269 void makeBlink() { 2270 if (shouldBlink()) { 2271 mShowCursor = SystemClock.uptimeMillis(); 2272 if (mBlink == null) mBlink = new Blink(); 2273 mTextView.removeCallbacks(mBlink); 2274 mTextView.postDelayed(mBlink, BLINK); 2275 } else { 2276 if (mBlink != null) mTextView.removeCallbacks(mBlink); 2277 } 2278 } 2279 2280 private class Blink implements Runnable { 2281 private boolean mCancelled; 2282 2283 public void run() { 2284 if (mCancelled) { 2285 return; 2286 } 2287 2288 mTextView.removeCallbacks(this); 2289 2290 if (shouldBlink()) { 2291 if (mTextView.getLayout() != null) { 2292 mTextView.invalidateCursorPath(); 2293 } 2294 2295 mTextView.postDelayed(this, BLINK); 2296 } 2297 } 2298 2299 void cancel() { 2300 if (!mCancelled) { 2301 mTextView.removeCallbacks(this); 2302 mCancelled = true; 2303 } 2304 } 2305 2306 void uncancel() { 2307 mCancelled = false; 2308 } 2309 } 2310 2311 private DragShadowBuilder getTextThumbnailBuilder(int start, int end) { 2312 TextView shadowView = (TextView) View.inflate(mTextView.getContext(), 2313 com.android.internal.R.layout.text_drag_thumbnail, null); 2314 2315 if (shadowView == null) { 2316 throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); 2317 } 2318 2319 if (end - start > DRAG_SHADOW_MAX_TEXT_LENGTH) { 2320 final long range = getCharClusterRange(start + DRAG_SHADOW_MAX_TEXT_LENGTH); 2321 end = TextUtils.unpackRangeEndFromLong(range); 2322 } 2323 final CharSequence text = mTextView.getTransformedText(start, end); 2324 shadowView.setText(text); 2325 shadowView.setTextColor(mTextView.getTextColors()); 2326 2327 shadowView.setTextAppearance(R.styleable.Theme_textAppearanceLarge); 2328 shadowView.setGravity(Gravity.CENTER); 2329 2330 shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2331 ViewGroup.LayoutParams.WRAP_CONTENT)); 2332 2333 final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); 2334 shadowView.measure(size, size); 2335 2336 shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight()); 2337 shadowView.invalidate(); 2338 return new DragShadowBuilder(shadowView); 2339 } 2340 2341 private static class DragLocalState { 2342 public TextView sourceTextView; 2343 public int start, end; 2344 2345 public DragLocalState(TextView sourceTextView, int start, int end) { 2346 this.sourceTextView = sourceTextView; 2347 this.start = start; 2348 this.end = end; 2349 } 2350 } 2351 2352 void onDrop(DragEvent event) { 2353 StringBuilder content = new StringBuilder(""); 2354 2355 final DropPermissions dropPermissions = DropPermissions.obtain(event); 2356 if (dropPermissions != null) { 2357 dropPermissions.takeTransient(); 2358 } 2359 2360 try { 2361 ClipData clipData = event.getClipData(); 2362 final int itemCount = clipData.getItemCount(); 2363 for (int i=0; i < itemCount; i++) { 2364 Item item = clipData.getItemAt(i); 2365 content.append(item.coerceToStyledText(mTextView.getContext())); 2366 } 2367 } 2368 finally { 2369 if (dropPermissions != null) { 2370 dropPermissions.release(); 2371 } 2372 } 2373 2374 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 2375 2376 Object localState = event.getLocalState(); 2377 DragLocalState dragLocalState = null; 2378 if (localState instanceof DragLocalState) { 2379 dragLocalState = (DragLocalState) localState; 2380 } 2381 boolean dragDropIntoItself = dragLocalState != null && 2382 dragLocalState.sourceTextView == mTextView; 2383 2384 if (dragDropIntoItself) { 2385 if (offset >= dragLocalState.start && offset < dragLocalState.end) { 2386 // A drop inside the original selection discards the drop. 2387 return; 2388 } 2389 } 2390 2391 final int originalLength = mTextView.getText().length(); 2392 int min = offset; 2393 int max = offset; 2394 2395 Selection.setSelection((Spannable) mTextView.getText(), max); 2396 mTextView.replaceText_internal(min, max, content); 2397 2398 if (dragDropIntoItself) { 2399 int dragSourceStart = dragLocalState.start; 2400 int dragSourceEnd = dragLocalState.end; 2401 if (max <= dragSourceStart) { 2402 // Inserting text before selection has shifted positions 2403 final int shift = mTextView.getText().length() - originalLength; 2404 dragSourceStart += shift; 2405 dragSourceEnd += shift; 2406 } 2407 2408 // Delete original selection 2409 mTextView.deleteText_internal(dragSourceStart, dragSourceEnd); 2410 2411 // Make sure we do not leave two adjacent spaces. 2412 final int prevCharIdx = Math.max(0, dragSourceStart - 1); 2413 final int nextCharIdx = Math.min(mTextView.getText().length(), dragSourceStart + 1); 2414 if (nextCharIdx > prevCharIdx + 1) { 2415 CharSequence t = mTextView.getTransformedText(prevCharIdx, nextCharIdx); 2416 if (Character.isSpaceChar(t.charAt(0)) && Character.isSpaceChar(t.charAt(1))) { 2417 mTextView.deleteText_internal(prevCharIdx, prevCharIdx + 1); 2418 } 2419 } 2420 } 2421 } 2422 2423 public void addSpanWatchers(Spannable text) { 2424 final int textLength = text.length(); 2425 2426 if (mKeyListener != null) { 2427 text.setSpan(mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2428 } 2429 2430 if (mSpanController == null) { 2431 mSpanController = new SpanController(); 2432 } 2433 text.setSpan(mSpanController, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2434 } 2435 2436 void setContextMenuAnchor(float x, float y) { 2437 mContextMenuAnchorX = x; 2438 mContextMenuAnchorY = y; 2439 } 2440 2441 void onCreateContextMenu(ContextMenu menu) { 2442 if (mIsBeingLongClicked || Float.isNaN(mContextMenuAnchorX) 2443 || Float.isNaN(mContextMenuAnchorY)) { 2444 return; 2445 } 2446 final int offset = mTextView.getOffsetForPosition(mContextMenuAnchorX, mContextMenuAnchorY); 2447 if (offset == -1) { 2448 return; 2449 } 2450 stopTextActionModeWithPreservingSelection(); 2451 final boolean isOnSelection = mTextView.hasSelection() 2452 && offset >= mTextView.getSelectionStart() && offset <= mTextView.getSelectionEnd(); 2453 if (!isOnSelection) { 2454 // Right clicked position is not on the selection. Remove the selection and move the 2455 // cursor to the right clicked position. 2456 Selection.setSelection((Spannable) mTextView.getText(), offset); 2457 stopTextActionMode(); 2458 } 2459 2460 if (shouldOfferToShowSuggestions()) { 2461 if (mSuggestionInfosInContextMenu == null) { 2462 mSuggestionInfosInContextMenu = 2463 new SuggestionInfo[SuggestionSpan.SUGGESTIONS_MAX_SIZE]; 2464 for (int i = 0; i < mSuggestionInfosInContextMenu.length; i++) { 2465 mSuggestionInfosInContextMenu[i] = new SuggestionInfo(); 2466 } 2467 } 2468 final SubMenu subMenu = menu.addSubMenu(Menu.NONE, Menu.NONE, MENU_ITEM_ORDER_REPLACE, 2469 com.android.internal.R.string.replace); 2470 mSuggestionHelper.getSuggestionInfo(mSuggestionInfosInContextMenu); 2471 int i = 0; 2472 for (final SuggestionInfo info : mSuggestionInfosInContextMenu) { 2473 info.mSuggestionEnd = info.mText.length(); 2474 subMenu.add(Menu.NONE, Menu.NONE, i++, info.mText) 2475 .setOnMenuItemClickListener(mOnContextMenuReplaceItemClickListener); 2476 } 2477 } 2478 2479 menu.add(Menu.NONE, TextView.ID_UNDO, MENU_ITEM_ORDER_UNDO, 2480 com.android.internal.R.string.undo) 2481 .setAlphabeticShortcut('z') 2482 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2483 .setEnabled(mTextView.canUndo()); 2484 menu.add(Menu.NONE, TextView.ID_REDO, MENU_ITEM_ORDER_REDO, 2485 com.android.internal.R.string.redo) 2486 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2487 .setEnabled(mTextView.canRedo()); 2488 2489 menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, 2490 com.android.internal.R.string.cut) 2491 .setAlphabeticShortcut('x') 2492 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2493 .setEnabled(mTextView.canCut()); 2494 menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, 2495 com.android.internal.R.string.copy) 2496 .setAlphabeticShortcut('c') 2497 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2498 .setEnabled(mTextView.canCopy()); 2499 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, 2500 com.android.internal.R.string.paste) 2501 .setAlphabeticShortcut('v') 2502 .setEnabled(mTextView.canPaste()) 2503 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2504 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE_AS_PLAIN_TEXT, 2505 com.android.internal.R.string.paste_as_plain_text) 2506 .setEnabled(mTextView.canPaste()) 2507 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2508 menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, 2509 com.android.internal.R.string.share) 2510 .setEnabled(mTextView.canShare()) 2511 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2512 menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, 2513 com.android.internal.R.string.selectAll) 2514 .setAlphabeticShortcut('a') 2515 .setEnabled(mTextView.canSelectAllText()) 2516 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2517 2518 mPreserveDetachedSelection = true; 2519 } 2520 2521 private void replaceWithSuggestion(final SuggestionInfo suggestionInfo) { 2522 final Editable editable = (Editable) mTextView.getText(); 2523 if (editable.getSpanStart(suggestionInfo.mSuggestionSpan) < 0) { 2524 // Suggestion span coundn't be found. Try to find a suggestion span that has the same 2525 // contents. 2526 final SuggestionSpan[] suggestionSpans = editable.getSpans( 2527 suggestionInfo.mSuggestionSpanStart, suggestionInfo.mSuggestionSpanEnd, 2528 SuggestionSpan.class); 2529 for (final SuggestionSpan suggestionSpan : suggestionSpans) { 2530 final int spanStart = editable.getSpanStart(suggestionSpan); 2531 if (spanStart != suggestionInfo.mSuggestionSpanStart) { 2532 continue; 2533 } 2534 int spanEnd = editable.getSpanEnd(suggestionSpan); 2535 if (spanEnd != suggestionInfo.mSuggestionSpanEnd) { 2536 continue; 2537 } 2538 if (suggestionSpan.equals(suggestionInfo.mSuggestionSpan)) { 2539 // Found. 2540 suggestionInfo.mSuggestionSpan = suggestionSpan; 2541 break; 2542 } 2543 } 2544 } 2545 final int spanStart = editable.getSpanStart(suggestionInfo.mSuggestionSpan); 2546 final int spanEnd = editable.getSpanEnd(suggestionInfo.mSuggestionSpan); 2547 if (spanStart < 0 || spanEnd <= spanStart) { 2548 // Span has been removed 2549 return; 2550 } 2551 2552 final String originalText = TextUtils.substring(editable, spanStart, spanEnd); 2553 // SuggestionSpans are removed by replace: save them before 2554 SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd, 2555 SuggestionSpan.class); 2556 final int length = suggestionSpans.length; 2557 int[] suggestionSpansStarts = new int[length]; 2558 int[] suggestionSpansEnds = new int[length]; 2559 int[] suggestionSpansFlags = new int[length]; 2560 for (int i = 0; i < length; i++) { 2561 final SuggestionSpan suggestionSpan = suggestionSpans[i]; 2562 suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan); 2563 suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan); 2564 suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan); 2565 2566 // Remove potential misspelled flags 2567 int suggestionSpanFlags = suggestionSpan.getFlags(); 2568 if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) != 0) { 2569 suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED; 2570 suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 2571 suggestionSpan.setFlags(suggestionSpanFlags); 2572 } 2573 } 2574 2575 // Notify source IME of the suggestion pick. Do this before swapping texts. 2576 suggestionInfo.mSuggestionSpan.notifySelection( 2577 mTextView.getContext(), originalText, suggestionInfo.mSuggestionIndex); 2578 2579 // Swap text content between actual text and Suggestion span 2580 final int suggestionStart = suggestionInfo.mSuggestionStart; 2581 final int suggestionEnd = suggestionInfo.mSuggestionEnd; 2582 final String suggestion = suggestionInfo.mText.subSequence( 2583 suggestionStart, suggestionEnd).toString(); 2584 mTextView.replaceText_internal(spanStart, spanEnd, suggestion); 2585 2586 String[] suggestions = suggestionInfo.mSuggestionSpan.getSuggestions(); 2587 suggestions[suggestionInfo.mSuggestionIndex] = originalText; 2588 2589 // Restore previous SuggestionSpans 2590 final int lengthDelta = suggestion.length() - (spanEnd - spanStart); 2591 for (int i = 0; i < length; i++) { 2592 // Only spans that include the modified region make sense after replacement 2593 // Spans partially included in the replaced region are removed, there is no 2594 // way to assign them a valid range after replacement 2595 if (suggestionSpansStarts[i] <= spanStart && suggestionSpansEnds[i] >= spanEnd) { 2596 mTextView.setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i], 2597 suggestionSpansEnds[i] + lengthDelta, suggestionSpansFlags[i]); 2598 } 2599 } 2600 // Move cursor at the end of the replaced word 2601 final int newCursorPosition = spanEnd + lengthDelta; 2602 mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); 2603 } 2604 2605 private final MenuItem.OnMenuItemClickListener mOnContextMenuItemClickListener = 2606 new MenuItem.OnMenuItemClickListener() { 2607 @Override 2608 public boolean onMenuItemClick(MenuItem item) { 2609 if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { 2610 return true; 2611 } 2612 return mTextView.onTextContextMenuItem(item.getItemId()); 2613 } 2614 }; 2615 2616 private final MenuItem.OnMenuItemClickListener mOnContextMenuReplaceItemClickListener = 2617 new MenuItem.OnMenuItemClickListener() { 2618 @Override 2619 public boolean onMenuItemClick(MenuItem item) { 2620 int index = item.getOrder(); 2621 if (index < 0 || index >= mSuggestionInfosInContextMenu.length) { 2622 clear(); 2623 return false; 2624 } 2625 replaceWithSuggestion(mSuggestionInfosInContextMenu[index]); 2626 clear(); 2627 return true; 2628 } 2629 2630 private void clear() { 2631 for (final SuggestionInfo info : mSuggestionInfosInContextMenu) { 2632 info.clear(); 2633 } 2634 } 2635 }; 2636 2637 /** 2638 * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related 2639 * pop-up should be displayed. 2640 * Also monitors {@link Selection} to call back to the attached input method. 2641 */ 2642 class SpanController implements SpanWatcher { 2643 2644 private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs 2645 2646 private EasyEditPopupWindow mPopupWindow; 2647 2648 private Runnable mHidePopup; 2649 2650 // This function is pure but inner classes can't have static functions 2651 private boolean isNonIntermediateSelectionSpan(final Spannable text, 2652 final Object span) { 2653 return (Selection.SELECTION_START == span || Selection.SELECTION_END == span) 2654 && (text.getSpanFlags(span) & Spanned.SPAN_INTERMEDIATE) == 0; 2655 } 2656 2657 @Override 2658 public void onSpanAdded(Spannable text, Object span, int start, int end) { 2659 if (isNonIntermediateSelectionSpan(text, span)) { 2660 sendUpdateSelection(); 2661 } else if (span instanceof EasyEditSpan) { 2662 if (mPopupWindow == null) { 2663 mPopupWindow = new EasyEditPopupWindow(); 2664 mHidePopup = new Runnable() { 2665 @Override 2666 public void run() { 2667 hide(); 2668 } 2669 }; 2670 } 2671 2672 // Make sure there is only at most one EasyEditSpan in the text 2673 if (mPopupWindow.mEasyEditSpan != null) { 2674 mPopupWindow.mEasyEditSpan.setDeleteEnabled(false); 2675 } 2676 2677 mPopupWindow.setEasyEditSpan((EasyEditSpan) span); 2678 mPopupWindow.setOnDeleteListener(new EasyEditDeleteListener() { 2679 @Override 2680 public void onDeleteClick(EasyEditSpan span) { 2681 Editable editable = (Editable) mTextView.getText(); 2682 int start = editable.getSpanStart(span); 2683 int end = editable.getSpanEnd(span); 2684 if (start >= 0 && end >= 0) { 2685 sendEasySpanNotification(EasyEditSpan.TEXT_DELETED, span); 2686 mTextView.deleteText_internal(start, end); 2687 } 2688 editable.removeSpan(span); 2689 } 2690 }); 2691 2692 if (mTextView.getWindowVisibility() != View.VISIBLE) { 2693 // The window is not visible yet, ignore the text change. 2694 return; 2695 } 2696 2697 if (mTextView.getLayout() == null) { 2698 // The view has not been laid out yet, ignore the text change 2699 return; 2700 } 2701 2702 if (extractedTextModeWillBeStarted()) { 2703 // The input is in extract mode. Do not handle the easy edit in 2704 // the original TextView, as the ExtractEditText will do 2705 return; 2706 } 2707 2708 mPopupWindow.show(); 2709 mTextView.removeCallbacks(mHidePopup); 2710 mTextView.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS); 2711 } 2712 } 2713 2714 @Override 2715 public void onSpanRemoved(Spannable text, Object span, int start, int end) { 2716 if (isNonIntermediateSelectionSpan(text, span)) { 2717 sendUpdateSelection(); 2718 } else if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { 2719 hide(); 2720 } 2721 } 2722 2723 @Override 2724 public void onSpanChanged(Spannable text, Object span, int previousStart, int previousEnd, 2725 int newStart, int newEnd) { 2726 if (isNonIntermediateSelectionSpan(text, span)) { 2727 sendUpdateSelection(); 2728 } else if (mPopupWindow != null && span instanceof EasyEditSpan) { 2729 EasyEditSpan easyEditSpan = (EasyEditSpan) span; 2730 sendEasySpanNotification(EasyEditSpan.TEXT_MODIFIED, easyEditSpan); 2731 text.removeSpan(easyEditSpan); 2732 } 2733 } 2734 2735 public void hide() { 2736 if (mPopupWindow != null) { 2737 mPopupWindow.hide(); 2738 mTextView.removeCallbacks(mHidePopup); 2739 } 2740 } 2741 2742 private void sendEasySpanNotification(int textChangedType, EasyEditSpan span) { 2743 try { 2744 PendingIntent pendingIntent = span.getPendingIntent(); 2745 if (pendingIntent != null) { 2746 Intent intent = new Intent(); 2747 intent.putExtra(EasyEditSpan.EXTRA_TEXT_CHANGED_TYPE, textChangedType); 2748 pendingIntent.send(mTextView.getContext(), 0, intent); 2749 } 2750 } catch (CanceledException e) { 2751 // This should not happen, as we should try to send the intent only once. 2752 Log.w(TAG, "PendingIntent for notification cannot be sent", e); 2753 } 2754 } 2755 } 2756 2757 /** 2758 * Listens for the delete event triggered by {@link EasyEditPopupWindow}. 2759 */ 2760 private interface EasyEditDeleteListener { 2761 2762 /** 2763 * Clicks the delete pop-up. 2764 */ 2765 void onDeleteClick(EasyEditSpan span); 2766 } 2767 2768 /** 2769 * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled 2770 * by {@link SpanController}. 2771 */ 2772 private class EasyEditPopupWindow extends PinnedPopupWindow 2773 implements OnClickListener { 2774 private static final int POPUP_TEXT_LAYOUT = 2775 com.android.internal.R.layout.text_edit_action_popup_text; 2776 private TextView mDeleteTextView; 2777 private EasyEditSpan mEasyEditSpan; 2778 private EasyEditDeleteListener mOnDeleteListener; 2779 2780 @Override 2781 protected void createPopupWindow() { 2782 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 2783 com.android.internal.R.attr.textSelectHandleWindowStyle); 2784 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 2785 mPopupWindow.setClippingEnabled(true); 2786 } 2787 2788 @Override 2789 protected void initContentView() { 2790 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 2791 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 2792 mContentView = linearLayout; 2793 mContentView.setBackgroundResource( 2794 com.android.internal.R.drawable.text_edit_side_paste_window); 2795 2796 LayoutInflater inflater = (LayoutInflater)mTextView.getContext(). 2797 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2798 2799 LayoutParams wrapContent = new LayoutParams( 2800 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 2801 2802 mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2803 mDeleteTextView.setLayoutParams(wrapContent); 2804 mDeleteTextView.setText(com.android.internal.R.string.delete); 2805 mDeleteTextView.setOnClickListener(this); 2806 mContentView.addView(mDeleteTextView); 2807 } 2808 2809 public void setEasyEditSpan(EasyEditSpan easyEditSpan) { 2810 mEasyEditSpan = easyEditSpan; 2811 } 2812 2813 private void setOnDeleteListener(EasyEditDeleteListener listener) { 2814 mOnDeleteListener = listener; 2815 } 2816 2817 @Override 2818 public void onClick(View view) { 2819 if (view == mDeleteTextView 2820 && mEasyEditSpan != null && mEasyEditSpan.isDeleteEnabled() 2821 && mOnDeleteListener != null) { 2822 mOnDeleteListener.onDeleteClick(mEasyEditSpan); 2823 } 2824 } 2825 2826 @Override 2827 public void hide() { 2828 if (mEasyEditSpan != null) { 2829 mEasyEditSpan.setDeleteEnabled(false); 2830 } 2831 mOnDeleteListener = null; 2832 super.hide(); 2833 } 2834 2835 @Override 2836 protected int getTextOffset() { 2837 // Place the pop-up at the end of the span 2838 Editable editable = (Editable) mTextView.getText(); 2839 return editable.getSpanEnd(mEasyEditSpan); 2840 } 2841 2842 @Override 2843 protected int getVerticalLocalPosition(int line) { 2844 return mTextView.getLayout().getLineBottom(line); 2845 } 2846 2847 @Override 2848 protected int clipVertically(int positionY) { 2849 // As we display the pop-up below the span, no vertical clipping is required. 2850 return positionY; 2851 } 2852 } 2853 2854 private class PositionListener implements ViewTreeObserver.OnPreDrawListener { 2855 // 3 handles 2856 // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others) 2857 // 1 CursorAnchorInfoNotifier 2858 private final int MAXIMUM_NUMBER_OF_LISTENERS = 7; 2859 private TextViewPositionListener[] mPositionListeners = 2860 new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS]; 2861 private boolean mCanMove[] = new boolean[MAXIMUM_NUMBER_OF_LISTENERS]; 2862 private boolean mPositionHasChanged = true; 2863 // Absolute position of the TextView with respect to its parent window 2864 private int mPositionX, mPositionY; 2865 private int mNumberOfListeners; 2866 private boolean mScrollHasChanged; 2867 final int[] mTempCoords = new int[2]; 2868 2869 public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) { 2870 if (mNumberOfListeners == 0) { 2871 updatePosition(); 2872 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2873 vto.addOnPreDrawListener(this); 2874 } 2875 2876 int emptySlotIndex = -1; 2877 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2878 TextViewPositionListener listener = mPositionListeners[i]; 2879 if (listener == positionListener) { 2880 return; 2881 } else if (emptySlotIndex < 0 && listener == null) { 2882 emptySlotIndex = i; 2883 } 2884 } 2885 2886 mPositionListeners[emptySlotIndex] = positionListener; 2887 mCanMove[emptySlotIndex] = canMove; 2888 mNumberOfListeners++; 2889 } 2890 2891 public void removeSubscriber(TextViewPositionListener positionListener) { 2892 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2893 if (mPositionListeners[i] == positionListener) { 2894 mPositionListeners[i] = null; 2895 mNumberOfListeners--; 2896 break; 2897 } 2898 } 2899 2900 if (mNumberOfListeners == 0) { 2901 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2902 vto.removeOnPreDrawListener(this); 2903 } 2904 } 2905 2906 public int getPositionX() { 2907 return mPositionX; 2908 } 2909 2910 public int getPositionY() { 2911 return mPositionY; 2912 } 2913 2914 @Override 2915 public boolean onPreDraw() { 2916 updatePosition(); 2917 2918 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2919 if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) { 2920 TextViewPositionListener positionListener = mPositionListeners[i]; 2921 if (positionListener != null) { 2922 positionListener.updatePosition(mPositionX, mPositionY, 2923 mPositionHasChanged, mScrollHasChanged); 2924 } 2925 } 2926 } 2927 2928 mScrollHasChanged = false; 2929 return true; 2930 } 2931 2932 private void updatePosition() { 2933 mTextView.getLocationInWindow(mTempCoords); 2934 2935 mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY; 2936 2937 mPositionX = mTempCoords[0]; 2938 mPositionY = mTempCoords[1]; 2939 } 2940 2941 public void onScrollChanged() { 2942 mScrollHasChanged = true; 2943 } 2944 } 2945 2946 private abstract class PinnedPopupWindow implements TextViewPositionListener { 2947 protected PopupWindow mPopupWindow; 2948 protected ViewGroup mContentView; 2949 int mPositionX, mPositionY; 2950 int mClippingLimitLeft, mClippingLimitRight; 2951 2952 protected abstract void createPopupWindow(); 2953 protected abstract void initContentView(); 2954 protected abstract int getTextOffset(); 2955 protected abstract int getVerticalLocalPosition(int line); 2956 protected abstract int clipVertically(int positionY); 2957 2958 public PinnedPopupWindow() { 2959 createPopupWindow(); 2960 2961 mPopupWindow.setWindowLayoutType( 2962 WindowManager.LayoutParams.TYPE_APPLICATION_ABOVE_SUB_PANEL); 2963 mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 2964 mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 2965 2966 initContentView(); 2967 2968 LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2969 ViewGroup.LayoutParams.WRAP_CONTENT); 2970 mContentView.setLayoutParams(wrapContent); 2971 2972 mPopupWindow.setContentView(mContentView); 2973 } 2974 2975 public void show() { 2976 getPositionListener().addSubscriber(this, false /* offset is fixed */); 2977 2978 computeLocalPosition(); 2979 2980 final PositionListener positionListener = getPositionListener(); 2981 updatePosition(positionListener.getPositionX(), positionListener.getPositionY()); 2982 } 2983 2984 protected void measureContent() { 2985 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2986 mContentView.measure( 2987 View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, 2988 View.MeasureSpec.AT_MOST), 2989 View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, 2990 View.MeasureSpec.AT_MOST)); 2991 } 2992 2993 /* The popup window will be horizontally centered on the getTextOffset() and vertically 2994 * positioned according to viewportToContentHorizontalOffset. 2995 * 2996 * This method assumes that mContentView has properly been measured from its content. */ 2997 private void computeLocalPosition() { 2998 measureContent(); 2999 final int width = mContentView.getMeasuredWidth(); 3000 final int offset = getTextOffset(); 3001 mPositionX = (int) (mTextView.getLayout().getPrimaryHorizontal(offset) - width / 2.0f); 3002 mPositionX += mTextView.viewportToContentHorizontalOffset(); 3003 3004 final int line = mTextView.getLayout().getLineForOffset(offset); 3005 mPositionY = getVerticalLocalPosition(line); 3006 mPositionY += mTextView.viewportToContentVerticalOffset(); 3007 } 3008 3009 private void updatePosition(int parentPositionX, int parentPositionY) { 3010 int positionX = parentPositionX + mPositionX; 3011 int positionY = parentPositionY + mPositionY; 3012 3013 positionY = clipVertically(positionY); 3014 3015 // Horizontal clipping 3016 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3017 final int width = mContentView.getMeasuredWidth(); 3018 positionX = Math.min( 3019 displayMetrics.widthPixels - width + mClippingLimitRight, positionX); 3020 positionX = Math.max(-mClippingLimitLeft, positionX); 3021 3022 if (isShowing()) { 3023 mPopupWindow.update(positionX, positionY, -1, -1); 3024 } else { 3025 mPopupWindow.showAtLocation(mTextView, Gravity.NO_GRAVITY, 3026 positionX, positionY); 3027 } 3028 } 3029 3030 public void hide() { 3031 if (!isShowing()) { 3032 return; 3033 } 3034 mPopupWindow.dismiss(); 3035 getPositionListener().removeSubscriber(this); 3036 } 3037 3038 @Override 3039 public void updatePosition(int parentPositionX, int parentPositionY, 3040 boolean parentPositionChanged, boolean parentScrolled) { 3041 // Either parentPositionChanged or parentScrolled is true, check if still visible 3042 if (isShowing() && isOffsetVisible(getTextOffset())) { 3043 if (parentScrolled) computeLocalPosition(); 3044 updatePosition(parentPositionX, parentPositionY); 3045 } else { 3046 hide(); 3047 } 3048 } 3049 3050 public boolean isShowing() { 3051 return mPopupWindow.isShowing(); 3052 } 3053 } 3054 3055 private static class SuggestionInfo { 3056 // Range of actual suggestion within mText 3057 int mSuggestionStart, mSuggestionEnd; 3058 3059 // The SuggestionSpan that this TextView represents 3060 @Nullable 3061 SuggestionSpan mSuggestionSpan; 3062 3063 // The SuggestionSpan start position 3064 int mSuggestionSpanStart; 3065 3066 // The SuggestionSpan end position 3067 int mSuggestionSpanEnd; 3068 3069 // The index of this suggestion inside suggestionSpan 3070 int mSuggestionIndex; 3071 3072 final SpannableStringBuilder mText = new SpannableStringBuilder(); 3073 3074 void clear() { 3075 mSuggestionSpan = null; 3076 mText.clear(); 3077 } 3078 } 3079 3080 private class SuggestionHelper { 3081 private final Comparator<SuggestionSpan> mSuggestionSpanComparator = 3082 new SuggestionSpanComparator(); 3083 private final HashMap<SuggestionSpan, Integer> mSpansLengths = 3084 new HashMap<SuggestionSpan, Integer>(); 3085 3086 private class SuggestionSpanComparator implements Comparator<SuggestionSpan> { 3087 public int compare(SuggestionSpan span1, SuggestionSpan span2) { 3088 final int flag1 = span1.getFlags(); 3089 final int flag2 = span2.getFlags(); 3090 if (flag1 != flag2) { 3091 // The order here should match what is used in updateDrawState 3092 final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 3093 final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 3094 final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0; 3095 final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0; 3096 if (easy1 && !misspelled1) return -1; 3097 if (easy2 && !misspelled2) return 1; 3098 if (misspelled1) return -1; 3099 if (misspelled2) return 1; 3100 } 3101 3102 return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue(); 3103 } 3104 } 3105 3106 /** 3107 * Returns the suggestion spans that cover the current cursor position. The suggestion 3108 * spans are sorted according to the length of text that they are attached to. 3109 */ 3110 private SuggestionSpan[] getSortedSuggestionSpans() { 3111 int pos = mTextView.getSelectionStart(); 3112 Spannable spannable = (Spannable) mTextView.getText(); 3113 SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class); 3114 3115 mSpansLengths.clear(); 3116 for (SuggestionSpan suggestionSpan : suggestionSpans) { 3117 int start = spannable.getSpanStart(suggestionSpan); 3118 int end = spannable.getSpanEnd(suggestionSpan); 3119 mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start)); 3120 } 3121 3122 // The suggestions are sorted according to their types (easy correction first, then 3123 // misspelled) and to the length of the text that they cover (shorter first). 3124 Arrays.sort(suggestionSpans, mSuggestionSpanComparator); 3125 mSpansLengths.clear(); 3126 3127 return suggestionSpans; 3128 } 3129 3130 /** 3131 * Gets the SuggestionInfo list that contains suggestion information at the current cursor 3132 * position. 3133 * 3134 * @param suggestionInfos SuggestionInfo array the results will be set. 3135 * @return the number of suggestions actually fetched. 3136 */ 3137 public int getSuggestionInfo(SuggestionInfo[] suggestionInfos) { 3138 final Spannable spannable = (Spannable) mTextView.getText(); 3139 final SuggestionSpan[] suggestionSpans = getSortedSuggestionSpans(); 3140 final int nbSpans = suggestionSpans.length; 3141 if (nbSpans == 0) return 0; 3142 3143 int numberOfSuggestions = 0; 3144 for (int spanIndex = 0; spanIndex < nbSpans; spanIndex++) { 3145 final SuggestionSpan suggestionSpan = suggestionSpans[spanIndex]; 3146 final int spanStart = spannable.getSpanStart(suggestionSpan); 3147 final int spanEnd = spannable.getSpanEnd(suggestionSpan); 3148 3149 final String[] suggestions = suggestionSpan.getSuggestions(); 3150 final int nbSuggestions = suggestions.length; 3151 for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) { 3152 final String suggestion = suggestions[suggestionIndex]; 3153 boolean suggestionIsDuplicate = false; 3154 for (int i = 0; i < numberOfSuggestions; i++) { 3155 if (suggestionInfos[i].mText.toString().equals(suggestion)) { 3156 final SuggestionSpan otherSuggestionSpan = 3157 suggestionInfos[i].mSuggestionSpan; 3158 final int otherSpanStart = spannable.getSpanStart(otherSuggestionSpan); 3159 final int otherSpanEnd = spannable.getSpanEnd(otherSuggestionSpan); 3160 if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) { 3161 suggestionIsDuplicate = true; 3162 break; 3163 } 3164 } 3165 } 3166 3167 if (suggestionIsDuplicate) { 3168 continue; 3169 } 3170 SuggestionInfo suggestionInfo = suggestionInfos[numberOfSuggestions]; 3171 suggestionInfo.mSuggestionSpan = suggestionSpan; 3172 suggestionInfo.mSuggestionIndex = suggestionIndex; 3173 suggestionInfo.mSuggestionStart = 0; 3174 suggestionInfo.mSuggestionEnd = suggestion.length(); 3175 suggestionInfo.mSuggestionSpanStart = spanStart; 3176 suggestionInfo.mSuggestionSpanEnd = spanEnd; 3177 suggestionInfo.mText.replace(0, suggestionInfo.mText.length(), suggestion); 3178 numberOfSuggestions++; 3179 if (numberOfSuggestions >= suggestionInfos.length) { 3180 return numberOfSuggestions; 3181 } 3182 } 3183 } 3184 return numberOfSuggestions; 3185 } 3186 } 3187 3188 @VisibleForTesting 3189 public class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener { 3190 private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE; 3191 3192 // Key of intent extras for inserting new word into user dictionary. 3193 private static final String USER_DICTIONARY_EXTRA_WORD = "word"; 3194 private static final String USER_DICTIONARY_EXTRA_LOCALE = "locale"; 3195 3196 private SuggestionInfo[] mSuggestionInfos; 3197 private int mNumberOfSuggestions; 3198 private boolean mCursorWasVisibleBeforeSuggestions; 3199 private boolean mIsShowingUp = false; 3200 private SuggestionAdapter mSuggestionsAdapter; 3201 private final TextAppearanceSpan mHighlightSpan = new TextAppearanceSpan( 3202 mTextView.getContext(), mTextView.mTextEditSuggestionHighlightStyle); 3203 private TextView mAddToDictionaryButton; 3204 private TextView mDeleteButton; 3205 private ListView mSuggestionListView; 3206 private SuggestionSpan mMisspelledSpan; 3207 private int mContainerMarginWidth; 3208 private int mContainerMarginTop; 3209 3210 private class CustomPopupWindow extends PopupWindow { 3211 @Override 3212 public void dismiss() { 3213 if (!isShowing()) { 3214 return; 3215 } 3216 super.dismiss(); 3217 getPositionListener().removeSubscriber(SuggestionsPopupWindow.this); 3218 3219 // Safe cast since show() checks that mTextView.getText() is an Editable 3220 ((Spannable) mTextView.getText()).removeSpan(mSuggestionRangeSpan); 3221 3222 mTextView.setCursorVisible(mCursorWasVisibleBeforeSuggestions); 3223 if (hasInsertionController() && !extractedTextModeWillBeStarted()) { 3224 getInsertionController().show(); 3225 } 3226 } 3227 } 3228 3229 public SuggestionsPopupWindow() { 3230 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 3231 } 3232 3233 @Override 3234 protected void createPopupWindow() { 3235 mPopupWindow = new CustomPopupWindow(); 3236 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 3237 mPopupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT)); 3238 mPopupWindow.setFocusable(true); 3239 mPopupWindow.setClippingEnabled(false); 3240 } 3241 3242 @Override 3243 protected void initContentView() { 3244 final LayoutInflater inflater = (LayoutInflater) mTextView.getContext(). 3245 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 3246 final ViewGroup relativeLayout = (ViewGroup) inflater.inflate( 3247 mTextView.mTextEditSuggestionContainerLayout, null); 3248 3249 final LinearLayout suggestionWindowContainer = 3250 (LinearLayout) relativeLayout.findViewById( 3251 com.android.internal.R.id.suggestionWindowContainer); 3252 ViewGroup.MarginLayoutParams lp = 3253 (ViewGroup.MarginLayoutParams) suggestionWindowContainer.getLayoutParams(); 3254 mContainerMarginWidth = lp.leftMargin + lp.rightMargin; 3255 mContainerMarginTop = lp.topMargin; 3256 mClippingLimitLeft = lp.leftMargin; 3257 mClippingLimitRight = lp.rightMargin; 3258 3259 mSuggestionListView = (ListView) relativeLayout.findViewById( 3260 com.android.internal.R.id.suggestionContainer); 3261 3262 mSuggestionsAdapter = new SuggestionAdapter(); 3263 mSuggestionListView.setAdapter(mSuggestionsAdapter); 3264 mSuggestionListView.setOnItemClickListener(this); 3265 3266 // Inflate the suggestion items once and for all. 3267 mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS]; 3268 for (int i = 0; i < mSuggestionInfos.length; i++) { 3269 mSuggestionInfos[i] = new SuggestionInfo(); 3270 } 3271 3272 mContentView = relativeLayout; 3273 3274 mAddToDictionaryButton = (TextView) relativeLayout.findViewById( 3275 com.android.internal.R.id.addToDictionaryButton); 3276 mAddToDictionaryButton.setOnClickListener(new View.OnClickListener() { 3277 public void onClick(View v) { 3278 final Editable editable = (Editable) mTextView.getText(); 3279 final int spanStart = editable.getSpanStart(mMisspelledSpan); 3280 final int spanEnd = editable.getSpanEnd(mMisspelledSpan); 3281 final String originalText = TextUtils.substring(editable, spanStart, spanEnd); 3282 3283 final Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT); 3284 intent.putExtra(USER_DICTIONARY_EXTRA_WORD, originalText); 3285 intent.putExtra(USER_DICTIONARY_EXTRA_LOCALE, 3286 mTextView.getTextServicesLocale().toString()); 3287 intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); 3288 mTextView.getContext().startActivity(intent); 3289 // There is no way to know if the word was indeed added. Re-check. 3290 // TODO The ExtractEditText should remove the span in the original text instead 3291 editable.removeSpan(mMisspelledSpan); 3292 Selection.setSelection(editable, spanEnd); 3293 updateSpellCheckSpans(spanStart, spanEnd, false); 3294 hideWithCleanUp(); 3295 } 3296 }); 3297 3298 mDeleteButton = (TextView) relativeLayout.findViewById( 3299 com.android.internal.R.id.deleteButton); 3300 mDeleteButton.setOnClickListener(new View.OnClickListener() { 3301 public void onClick(View v) { 3302 final Editable editable = (Editable) mTextView.getText(); 3303 3304 final int spanUnionStart = editable.getSpanStart(mSuggestionRangeSpan); 3305 int spanUnionEnd = editable.getSpanEnd(mSuggestionRangeSpan); 3306 if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) { 3307 // Do not leave two adjacent spaces after deletion, or one at beginning of 3308 // text 3309 if (spanUnionEnd < editable.length() && 3310 Character.isSpaceChar(editable.charAt(spanUnionEnd)) && 3311 (spanUnionStart == 0 || 3312 Character.isSpaceChar(editable.charAt(spanUnionStart - 1)))) { 3313 spanUnionEnd = spanUnionEnd + 1; 3314 } 3315 mTextView.deleteText_internal(spanUnionStart, spanUnionEnd); 3316 } 3317 hideWithCleanUp(); 3318 } 3319 }); 3320 3321 } 3322 3323 public boolean isShowingUp() { 3324 return mIsShowingUp; 3325 } 3326 3327 public void onParentLostFocus() { 3328 mIsShowingUp = false; 3329 } 3330 3331 private class SuggestionAdapter extends BaseAdapter { 3332 private LayoutInflater mInflater = (LayoutInflater) mTextView.getContext(). 3333 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 3334 3335 @Override 3336 public int getCount() { 3337 return mNumberOfSuggestions; 3338 } 3339 3340 @Override 3341 public Object getItem(int position) { 3342 return mSuggestionInfos[position]; 3343 } 3344 3345 @Override 3346 public long getItemId(int position) { 3347 return position; 3348 } 3349 3350 @Override 3351 public View getView(int position, View convertView, ViewGroup parent) { 3352 TextView textView = (TextView) convertView; 3353 3354 if (textView == null) { 3355 textView = (TextView) mInflater.inflate(mTextView.mTextEditSuggestionItemLayout, 3356 parent, false); 3357 } 3358 3359 final SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 3360 textView.setText(suggestionInfo.mText); 3361 return textView; 3362 } 3363 } 3364 3365 @VisibleForTesting 3366 public ViewGroup getContentViewForTesting() { 3367 return mContentView; 3368 } 3369 3370 @Override 3371 public void show() { 3372 if (!(mTextView.getText() instanceof Editable)) return; 3373 if (extractedTextModeWillBeStarted()) { 3374 return; 3375 } 3376 3377 if (updateSuggestions()) { 3378 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 3379 mTextView.setCursorVisible(false); 3380 mIsShowingUp = true; 3381 super.show(); 3382 } 3383 } 3384 3385 @Override 3386 protected void measureContent() { 3387 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3388 final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec( 3389 displayMetrics.widthPixels, View.MeasureSpec.AT_MOST); 3390 final int verticalMeasure = View.MeasureSpec.makeMeasureSpec( 3391 displayMetrics.heightPixels, View.MeasureSpec.AT_MOST); 3392 3393 int width = 0; 3394 View view = null; 3395 for (int i = 0; i < mNumberOfSuggestions; i++) { 3396 view = mSuggestionsAdapter.getView(i, view, mContentView); 3397 view.getLayoutParams().width = LayoutParams.WRAP_CONTENT; 3398 view.measure(horizontalMeasure, verticalMeasure); 3399 width = Math.max(width, view.getMeasuredWidth()); 3400 } 3401 3402 if (mAddToDictionaryButton.getVisibility() != View.GONE) { 3403 mAddToDictionaryButton.measure(horizontalMeasure, verticalMeasure); 3404 width = Math.max(width, mAddToDictionaryButton.getMeasuredWidth()); 3405 } 3406 3407 mDeleteButton.measure(horizontalMeasure, verticalMeasure); 3408 width = Math.max(width, mDeleteButton.getMeasuredWidth()); 3409 3410 width += mContainerMarginWidth; 3411 3412 // Enforce the width based on actual text widths 3413 mContentView.measure( 3414 View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY), 3415 verticalMeasure); 3416 3417 Drawable popupBackground = mPopupWindow.getBackground(); 3418 if (popupBackground != null) { 3419 if (mTempRect == null) mTempRect = new Rect(); 3420 popupBackground.getPadding(mTempRect); 3421 width += mTempRect.left + mTempRect.right; 3422 } 3423 mSuggestionListView.getLayoutParams().width = width; 3424 mPopupWindow.setWidth(width); 3425 } 3426 3427 @Override 3428 protected int getTextOffset() { 3429 return mTextView.getSelectionStart(); 3430 } 3431 3432 @Override 3433 protected int getVerticalLocalPosition(int line) { 3434 return mTextView.getLayout().getLineBottom(line) - mContainerMarginTop; 3435 } 3436 3437 @Override 3438 protected int clipVertically(int positionY) { 3439 final int height = mContentView.getMeasuredHeight(); 3440 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3441 return Math.min(positionY, displayMetrics.heightPixels - height); 3442 } 3443 3444 private void hideWithCleanUp() { 3445 for (final SuggestionInfo info : mSuggestionInfos) { 3446 info.clear(); 3447 } 3448 mMisspelledSpan = null; 3449 hide(); 3450 } 3451 3452 private boolean updateSuggestions() { 3453 Spannable spannable = (Spannable) mTextView.getText(); 3454 mNumberOfSuggestions = 3455 mSuggestionHelper.getSuggestionInfo(mSuggestionInfos); 3456 if (mNumberOfSuggestions == 0) { 3457 return false; 3458 } 3459 3460 int spanUnionStart = mTextView.getText().length(); 3461 int spanUnionEnd = 0; 3462 3463 mMisspelledSpan = null; 3464 for (int i = 0; i < mNumberOfSuggestions; i++) { 3465 final SuggestionInfo suggestionInfo = mSuggestionInfos[i]; 3466 final SuggestionSpan suggestionSpan = suggestionInfo.mSuggestionSpan; 3467 if ((suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) { 3468 mMisspelledSpan = suggestionSpan; 3469 } 3470 spanUnionStart = Math.min(spanUnionStart, suggestionInfo.mSuggestionSpanStart); 3471 spanUnionEnd = Math.max(spanUnionEnd, suggestionInfo.mSuggestionSpanEnd); 3472 } 3473 3474 for (int i = 0; i < mNumberOfSuggestions; i++) { 3475 highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd); 3476 } 3477 3478 // Make "Add to dictionary" item visible if there is a span with the misspelled flag 3479 int addToDictionaryButtonVisibility = View.GONE; 3480 if (mMisspelledSpan != null) { 3481 final int misspelledStart = spannable.getSpanStart(mMisspelledSpan); 3482 final int misspelledEnd = spannable.getSpanEnd(mMisspelledSpan); 3483 if (misspelledStart >= 0 && misspelledEnd > misspelledStart) { 3484 addToDictionaryButtonVisibility = View.VISIBLE; 3485 } 3486 } 3487 mAddToDictionaryButton.setVisibility(addToDictionaryButtonVisibility); 3488 3489 if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan(); 3490 final int underlineColor = mSuggestionInfos[0].mSuggestionSpan.getUnderlineColor(); 3491 if (underlineColor == 0) { 3492 // Fallback on the default highlight color when the first span does not provide one 3493 mSuggestionRangeSpan.setBackgroundColor(mTextView.mHighlightColor); 3494 } else { 3495 final float BACKGROUND_TRANSPARENCY = 0.4f; 3496 final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY); 3497 mSuggestionRangeSpan.setBackgroundColor( 3498 (underlineColor & 0x00FFFFFF) + (newAlpha << 24)); 3499 } 3500 spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd, 3501 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 3502 3503 mSuggestionsAdapter.notifyDataSetChanged(); 3504 return true; 3505 } 3506 3507 private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart, 3508 int unionEnd) { 3509 final Spannable text = (Spannable) mTextView.getText(); 3510 final int spanStart = suggestionInfo.mSuggestionSpanStart; 3511 final int spanEnd = suggestionInfo.mSuggestionSpanEnd; 3512 3513 // Adjust the start/end of the suggestion span 3514 suggestionInfo.mSuggestionStart = spanStart - unionStart; 3515 suggestionInfo.mSuggestionEnd = suggestionInfo.mSuggestionStart 3516 + suggestionInfo.mText.length(); 3517 3518 suggestionInfo.mText.setSpan(mHighlightSpan, 0, suggestionInfo.mText.length(), 3519 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 3520 3521 // Add the text before and after the span. 3522 final String textAsString = text.toString(); 3523 suggestionInfo.mText.insert(0, textAsString.substring(unionStart, spanStart)); 3524 suggestionInfo.mText.append(textAsString.substring(spanEnd, unionEnd)); 3525 } 3526 3527 @Override 3528 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 3529 SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 3530 replaceWithSuggestion(suggestionInfo); 3531 hideWithCleanUp(); 3532 } 3533 } 3534 3535 /** 3536 * An ActionMode Callback class that is used to provide actions while in text insertion or 3537 * selection mode. 3538 * 3539 * The default callback provides a subset of Select All, Cut, Copy, Paste, Share and Replace 3540 * actions, depending on which of these this TextView supports and the current selection. 3541 */ 3542 private class TextActionModeCallback extends ActionMode.Callback2 { 3543 private final Path mSelectionPath = new Path(); 3544 private final RectF mSelectionBounds = new RectF(); 3545 private final boolean mHasSelection; 3546 3547 private int mHandleHeight; 3548 3549 public TextActionModeCallback(boolean hasSelection) { 3550 mHasSelection = hasSelection; 3551 if (mHasSelection) { 3552 SelectionModifierCursorController selectionController = getSelectionController(); 3553 if (selectionController.mStartHandle == null) { 3554 // As these are for initializing selectionController, hide() must be called. 3555 selectionController.initDrawables(); 3556 selectionController.initHandles(); 3557 selectionController.hide(); 3558 } 3559 mHandleHeight = Math.max( 3560 mSelectHandleLeft.getMinimumHeight(), 3561 mSelectHandleRight.getMinimumHeight()); 3562 } else { 3563 InsertionPointCursorController insertionController = getInsertionController(); 3564 if (insertionController != null) { 3565 insertionController.getHandle(); 3566 mHandleHeight = mSelectHandleCenter.getMinimumHeight(); 3567 } 3568 } 3569 } 3570 3571 @Override 3572 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 3573 mode.setTitle(null); 3574 mode.setSubtitle(null); 3575 mode.setTitleOptionalHint(true); 3576 populateMenuWithItems(menu); 3577 3578 Callback customCallback = getCustomCallback(); 3579 if (customCallback != null) { 3580 if (!customCallback.onCreateActionMode(mode, menu)) { 3581 // The custom mode can choose to cancel the action mode, dismiss selection. 3582 Selection.setSelection((Spannable) mTextView.getText(), 3583 mTextView.getSelectionEnd()); 3584 return false; 3585 } 3586 } 3587 3588 if (mTextView.canProcessText()) { 3589 mProcessTextIntentActionsHandler.onInitializeMenu(menu); 3590 } 3591 3592 if (menu.hasVisibleItems() || mode.getCustomView() != null) { 3593 mTextView.setHasTransientState(true); 3594 return true; 3595 } else { 3596 return false; 3597 } 3598 } 3599 3600 private Callback getCustomCallback() { 3601 return mHasSelection 3602 ? mCustomSelectionActionModeCallback 3603 : mCustomInsertionActionModeCallback; 3604 } 3605 3606 private void populateMenuWithItems(Menu menu) { 3607 if (mTextView.canCut()) { 3608 menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, 3609 com.android.internal.R.string.cut). 3610 setAlphabeticShortcut('x'). 3611 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3612 } 3613 3614 if (mTextView.canCopy()) { 3615 menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, 3616 com.android.internal.R.string.copy). 3617 setAlphabeticShortcut('c'). 3618 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3619 } 3620 3621 if (mTextView.canPaste()) { 3622 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, 3623 com.android.internal.R.string.paste). 3624 setAlphabeticShortcut('v'). 3625 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3626 } 3627 3628 if (mTextView.canShare()) { 3629 menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, 3630 com.android.internal.R.string.share). 3631 setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3632 } 3633 3634 updateSelectAllItem(menu); 3635 updateReplaceItem(menu); 3636 } 3637 3638 @Override 3639 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 3640 updateSelectAllItem(menu); 3641 updateReplaceItem(menu); 3642 3643 Callback customCallback = getCustomCallback(); 3644 if (customCallback != null) { 3645 return customCallback.onPrepareActionMode(mode, menu); 3646 } 3647 return true; 3648 } 3649 3650 private void updateSelectAllItem(Menu menu) { 3651 boolean canSelectAll = mTextView.canSelectAllText(); 3652 boolean selectAllItemExists = menu.findItem(TextView.ID_SELECT_ALL) != null; 3653 if (canSelectAll && !selectAllItemExists) { 3654 menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, 3655 com.android.internal.R.string.selectAll) 3656 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3657 } else if (!canSelectAll && selectAllItemExists) { 3658 menu.removeItem(TextView.ID_SELECT_ALL); 3659 } 3660 } 3661 3662 private void updateReplaceItem(Menu menu) { 3663 boolean canReplace = mTextView.isSuggestionsEnabled() && shouldOfferToShowSuggestions(); 3664 boolean replaceItemExists = menu.findItem(TextView.ID_REPLACE) != null; 3665 if (canReplace && !replaceItemExists) { 3666 menu.add(Menu.NONE, TextView.ID_REPLACE, MENU_ITEM_ORDER_REPLACE, 3667 com.android.internal.R.string.replace) 3668 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3669 } else if (!canReplace && replaceItemExists) { 3670 menu.removeItem(TextView.ID_REPLACE); 3671 } 3672 } 3673 3674 @Override 3675 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 3676 if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { 3677 return true; 3678 } 3679 Callback customCallback = getCustomCallback(); 3680 if (customCallback != null && customCallback.onActionItemClicked(mode, item)) { 3681 return true; 3682 } 3683 return mTextView.onTextContextMenuItem(item.getItemId()); 3684 } 3685 3686 @Override 3687 public void onDestroyActionMode(ActionMode mode) { 3688 Callback customCallback = getCustomCallback(); 3689 if (customCallback != null) { 3690 customCallback.onDestroyActionMode(mode); 3691 } 3692 3693 /* 3694 * If we're ending this mode because we're detaching from a window, 3695 * we still have selection state to preserve. Don't clear it, we'll 3696 * bring back the selection mode when (if) we get reattached. 3697 */ 3698 if (!mPreserveDetachedSelection) { 3699 Selection.setSelection((Spannable) mTextView.getText(), 3700 mTextView.getSelectionEnd()); 3701 mTextView.setHasTransientState(false); 3702 } 3703 3704 if (mSelectionModifierCursorController != null) { 3705 mSelectionModifierCursorController.hide(); 3706 } 3707 3708 mTextActionMode = null; 3709 } 3710 3711 @Override 3712 public void onGetContentRect(ActionMode mode, View view, Rect outRect) { 3713 if (!view.equals(mTextView) || mTextView.getLayout() == null) { 3714 super.onGetContentRect(mode, view, outRect); 3715 return; 3716 } 3717 if (mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 3718 // We have a selection. 3719 mSelectionPath.reset(); 3720 mTextView.getLayout().getSelectionPath( 3721 mTextView.getSelectionStart(), mTextView.getSelectionEnd(), mSelectionPath); 3722 mSelectionPath.computeBounds(mSelectionBounds, true); 3723 mSelectionBounds.bottom += mHandleHeight; 3724 } else if (mCursorCount == 2) { 3725 // We have a split cursor. In this case, we take the rectangle that includes both 3726 // parts of the cursor to ensure we don't obscure either of them. 3727 Rect firstCursorBounds = mCursorDrawable[0].getBounds(); 3728 Rect secondCursorBounds = mCursorDrawable[1].getBounds(); 3729 mSelectionBounds.set( 3730 Math.min(firstCursorBounds.left, secondCursorBounds.left), 3731 Math.min(firstCursorBounds.top, secondCursorBounds.top), 3732 Math.max(firstCursorBounds.right, secondCursorBounds.right), 3733 Math.max(firstCursorBounds.bottom, secondCursorBounds.bottom) 3734 + mHandleHeight); 3735 } else { 3736 // We have a single cursor. 3737 Layout layout = getActiveLayout(); 3738 int line = layout.getLineForOffset(mTextView.getSelectionStart()); 3739 float primaryHorizontal = 3740 layout.getPrimaryHorizontal(mTextView.getSelectionStart()); 3741 mSelectionBounds.set( 3742 primaryHorizontal, 3743 layout.getLineTop(line), 3744 primaryHorizontal, 3745 layout.getLineTop(line + 1) + mHandleHeight); 3746 } 3747 // Take TextView's padding and scroll into account. 3748 int textHorizontalOffset = mTextView.viewportToContentHorizontalOffset(); 3749 int textVerticalOffset = mTextView.viewportToContentVerticalOffset(); 3750 outRect.set( 3751 (int) Math.floor(mSelectionBounds.left + textHorizontalOffset), 3752 (int) Math.floor(mSelectionBounds.top + textVerticalOffset), 3753 (int) Math.ceil(mSelectionBounds.right + textHorizontalOffset), 3754 (int) Math.ceil(mSelectionBounds.bottom + textVerticalOffset)); 3755 } 3756 } 3757 3758 /** 3759 * A listener to call {@link InputMethodManager#updateCursorAnchorInfo(View, CursorAnchorInfo)} 3760 * while the input method is requesting the cursor/anchor position. Does nothing as long as 3761 * {@link InputMethodManager#isWatchingCursor(View)} returns false. 3762 */ 3763 private final class CursorAnchorInfoNotifier implements TextViewPositionListener { 3764 final CursorAnchorInfo.Builder mSelectionInfoBuilder = new CursorAnchorInfo.Builder(); 3765 final int[] mTmpIntOffset = new int[2]; 3766 final Matrix mViewToScreenMatrix = new Matrix(); 3767 3768 @Override 3769 public void updatePosition(int parentPositionX, int parentPositionY, 3770 boolean parentPositionChanged, boolean parentScrolled) { 3771 final InputMethodState ims = mInputMethodState; 3772 if (ims == null || ims.mBatchEditNesting > 0) { 3773 return; 3774 } 3775 final InputMethodManager imm = InputMethodManager.peekInstance(); 3776 if (null == imm) { 3777 return; 3778 } 3779 if (!imm.isActive(mTextView)) { 3780 return; 3781 } 3782 // Skip if the IME has not requested the cursor/anchor position. 3783 if (!imm.isCursorAnchorInfoEnabled()) { 3784 return; 3785 } 3786 Layout layout = mTextView.getLayout(); 3787 if (layout == null) { 3788 return; 3789 } 3790 3791 final CursorAnchorInfo.Builder builder = mSelectionInfoBuilder; 3792 builder.reset(); 3793 3794 final int selectionStart = mTextView.getSelectionStart(); 3795 builder.setSelectionRange(selectionStart, mTextView.getSelectionEnd()); 3796 3797 // Construct transformation matrix from view local coordinates to screen coordinates. 3798 mViewToScreenMatrix.set(mTextView.getMatrix()); 3799 mTextView.getLocationOnScreen(mTmpIntOffset); 3800 mViewToScreenMatrix.postTranslate(mTmpIntOffset[0], mTmpIntOffset[1]); 3801 builder.setMatrix(mViewToScreenMatrix); 3802 3803 final float viewportToContentHorizontalOffset = 3804 mTextView.viewportToContentHorizontalOffset(); 3805 final float viewportToContentVerticalOffset = 3806 mTextView.viewportToContentVerticalOffset(); 3807 3808 final CharSequence text = mTextView.getText(); 3809 if (text instanceof Spannable) { 3810 final Spannable sp = (Spannable) text; 3811 int composingTextStart = EditableInputConnection.getComposingSpanStart(sp); 3812 int composingTextEnd = EditableInputConnection.getComposingSpanEnd(sp); 3813 if (composingTextEnd < composingTextStart) { 3814 final int temp = composingTextEnd; 3815 composingTextEnd = composingTextStart; 3816 composingTextStart = temp; 3817 } 3818 final boolean hasComposingText = 3819 (0 <= composingTextStart) && (composingTextStart < composingTextEnd); 3820 if (hasComposingText) { 3821 final CharSequence composingText = text.subSequence(composingTextStart, 3822 composingTextEnd); 3823 builder.setComposingText(composingTextStart, composingText); 3824 3825 final int minLine = layout.getLineForOffset(composingTextStart); 3826 final int maxLine = layout.getLineForOffset(composingTextEnd - 1); 3827 for (int line = minLine; line <= maxLine; ++line) { 3828 final int lineStart = layout.getLineStart(line); 3829 final int lineEnd = layout.getLineEnd(line); 3830 final int offsetStart = Math.max(lineStart, composingTextStart); 3831 final int offsetEnd = Math.min(lineEnd, composingTextEnd); 3832 final boolean ltrLine = 3833 layout.getParagraphDirection(line) == Layout.DIR_LEFT_TO_RIGHT; 3834 final float[] widths = new float[offsetEnd - offsetStart]; 3835 layout.getPaint().getTextWidths(text, offsetStart, offsetEnd, widths); 3836 final float top = layout.getLineTop(line); 3837 final float bottom = layout.getLineBottom(line); 3838 for (int offset = offsetStart; offset < offsetEnd; ++offset) { 3839 final float charWidth = widths[offset - offsetStart]; 3840 final boolean isRtl = layout.isRtlCharAt(offset); 3841 final float primary = layout.getPrimaryHorizontal(offset); 3842 final float secondary = layout.getSecondaryHorizontal(offset); 3843 // TODO: This doesn't work perfectly for text with custom styles and 3844 // TAB chars. 3845 final float left; 3846 final float right; 3847 if (ltrLine) { 3848 if (isRtl) { 3849 left = secondary - charWidth; 3850 right = secondary; 3851 } else { 3852 left = primary; 3853 right = primary + charWidth; 3854 } 3855 } else { 3856 if (!isRtl) { 3857 left = secondary; 3858 right = secondary + charWidth; 3859 } else { 3860 left = primary - charWidth; 3861 right = primary; 3862 } 3863 } 3864 // TODO: Check top-right and bottom-left as well. 3865 final float localLeft = left + viewportToContentHorizontalOffset; 3866 final float localRight = right + viewportToContentHorizontalOffset; 3867 final float localTop = top + viewportToContentVerticalOffset; 3868 final float localBottom = bottom + viewportToContentVerticalOffset; 3869 final boolean isTopLeftVisible = isPositionVisible(localLeft, localTop); 3870 final boolean isBottomRightVisible = 3871 isPositionVisible(localRight, localBottom); 3872 int characterBoundsFlags = 0; 3873 if (isTopLeftVisible || isBottomRightVisible) { 3874 characterBoundsFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; 3875 } 3876 if (!isTopLeftVisible || !isBottomRightVisible) { 3877 characterBoundsFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; 3878 } 3879 if (isRtl) { 3880 characterBoundsFlags |= CursorAnchorInfo.FLAG_IS_RTL; 3881 } 3882 // Here offset is the index in Java chars. 3883 builder.addCharacterBounds(offset, localLeft, localTop, localRight, 3884 localBottom, characterBoundsFlags); 3885 } 3886 } 3887 } 3888 } 3889 3890 // Treat selectionStart as the insertion point. 3891 if (0 <= selectionStart) { 3892 final int offset = selectionStart; 3893 final int line = layout.getLineForOffset(offset); 3894 final float insertionMarkerX = layout.getPrimaryHorizontal(offset) 3895 + viewportToContentHorizontalOffset; 3896 final float insertionMarkerTop = layout.getLineTop(line) 3897 + viewportToContentVerticalOffset; 3898 final float insertionMarkerBaseline = layout.getLineBaseline(line) 3899 + viewportToContentVerticalOffset; 3900 final float insertionMarkerBottom = layout.getLineBottom(line) 3901 + viewportToContentVerticalOffset; 3902 final boolean isTopVisible = 3903 isPositionVisible(insertionMarkerX, insertionMarkerTop); 3904 final boolean isBottomVisible = 3905 isPositionVisible(insertionMarkerX, insertionMarkerBottom); 3906 int insertionMarkerFlags = 0; 3907 if (isTopVisible || isBottomVisible) { 3908 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; 3909 } 3910 if (!isTopVisible || !isBottomVisible) { 3911 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; 3912 } 3913 if (layout.isRtlCharAt(offset)) { 3914 insertionMarkerFlags |= CursorAnchorInfo.FLAG_IS_RTL; 3915 } 3916 builder.setInsertionMarkerLocation(insertionMarkerX, insertionMarkerTop, 3917 insertionMarkerBaseline, insertionMarkerBottom, insertionMarkerFlags); 3918 } 3919 3920 imm.updateCursorAnchorInfo(mTextView, builder.build()); 3921 } 3922 } 3923 3924 @VisibleForTesting 3925 public abstract class HandleView extends View implements TextViewPositionListener { 3926 protected Drawable mDrawable; 3927 protected Drawable mDrawableLtr; 3928 protected Drawable mDrawableRtl; 3929 private final PopupWindow mContainer; 3930 // Position with respect to the parent TextView 3931 private int mPositionX, mPositionY; 3932 private boolean mIsDragging; 3933 // Offset from touch position to mPosition 3934 private float mTouchToWindowOffsetX, mTouchToWindowOffsetY; 3935 protected int mHotspotX; 3936 protected int mHorizontalGravity; 3937 // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up 3938 private float mTouchOffsetY; 3939 // Where the touch position should be on the handle to ensure a maximum cursor visibility 3940 private float mIdealVerticalOffset; 3941 // Parent's (TextView) previous position in window 3942 private int mLastParentX, mLastParentY; 3943 // Previous text character offset 3944 protected int mPreviousOffset = -1; 3945 // Previous text character offset 3946 private boolean mPositionHasChanged = true; 3947 // Minimum touch target size for handles 3948 private int mMinSize; 3949 // Indicates the line of text that the handle is on. 3950 protected int mPrevLine = UNSET_LINE; 3951 // Indicates the line of text that the user was touching. This can differ from mPrevLine 3952 // when selecting text when the handles jump to the end / start of words which may be on 3953 // a different line. 3954 protected int mPreviousLineTouched = UNSET_LINE; 3955 3956 private HandleView(Drawable drawableLtr, Drawable drawableRtl, final int id) { 3957 super(mTextView.getContext()); 3958 setId(id); 3959 mContainer = new PopupWindow(mTextView.getContext(), null, 3960 com.android.internal.R.attr.textSelectHandleWindowStyle); 3961 mContainer.setSplitTouchEnabled(true); 3962 mContainer.setClippingEnabled(false); 3963 mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 3964 mContainer.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 3965 mContainer.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 3966 mContainer.setContentView(this); 3967 3968 mDrawableLtr = drawableLtr; 3969 mDrawableRtl = drawableRtl; 3970 mMinSize = mTextView.getContext().getResources().getDimensionPixelSize( 3971 com.android.internal.R.dimen.text_handle_min_size); 3972 3973 updateDrawable(); 3974 3975 final int handleHeight = getPreferredHeight(); 3976 mTouchOffsetY = -0.3f * handleHeight; 3977 mIdealVerticalOffset = 0.7f * handleHeight; 3978 } 3979 3980 public float getIdealVerticalOffset() { 3981 return mIdealVerticalOffset; 3982 } 3983 3984 protected void updateDrawable() { 3985 if (mIsDragging) { 3986 // Don't update drawable during dragging. 3987 return; 3988 } 3989 final int offset = getCurrentCursorOffset(); 3990 final boolean isRtlCharAtOffset = mTextView.getLayout().isRtlCharAt(offset); 3991 final Drawable oldDrawable = mDrawable; 3992 mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr; 3993 mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset); 3994 mHorizontalGravity = getHorizontalGravity(isRtlCharAtOffset); 3995 final Layout layout = mTextView.getLayout(); 3996 if (layout != null && oldDrawable != mDrawable && isShowing()) { 3997 // Update popup window position. 3998 mPositionX = getCursorHorizontalPosition(layout, offset) - mHotspotX - 3999 getHorizontalOffset() + getCursorOffset(); 4000 mPositionX += mTextView.viewportToContentHorizontalOffset(); 4001 mPositionHasChanged = true; 4002 updatePosition(mLastParentX, mLastParentY, false, false); 4003 postInvalidate(); 4004 } 4005 } 4006 4007 protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun); 4008 protected abstract int getHorizontalGravity(boolean isRtlRun); 4009 4010 // Touch-up filter: number of previous positions remembered 4011 private static final int HISTORY_SIZE = 5; 4012 private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150; 4013 private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350; 4014 private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; 4015 private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; 4016 private int mPreviousOffsetIndex = 0; 4017 private int mNumberPreviousOffsets = 0; 4018 4019 private void startTouchUpFilter(int offset) { 4020 mNumberPreviousOffsets = 0; 4021 addPositionToTouchUpFilter(offset); 4022 } 4023 4024 private void addPositionToTouchUpFilter(int offset) { 4025 mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; 4026 mPreviousOffsets[mPreviousOffsetIndex] = offset; 4027 mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); 4028 mNumberPreviousOffsets++; 4029 } 4030 4031 private void filterOnTouchUp() { 4032 final long now = SystemClock.uptimeMillis(); 4033 int i = 0; 4034 int index = mPreviousOffsetIndex; 4035 final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); 4036 while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) { 4037 i++; 4038 index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; 4039 } 4040 4041 if (i > 0 && i < iMax && 4042 (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) { 4043 positionAtCursorOffset(mPreviousOffsets[index], false); 4044 } 4045 } 4046 4047 public boolean offsetHasBeenChanged() { 4048 return mNumberPreviousOffsets > 1; 4049 } 4050 4051 @Override 4052 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4053 setMeasuredDimension(getPreferredWidth(), getPreferredHeight()); 4054 } 4055 4056 private int getPreferredWidth() { 4057 return Math.max(mDrawable.getIntrinsicWidth(), mMinSize); 4058 } 4059 4060 private int getPreferredHeight() { 4061 return Math.max(mDrawable.getIntrinsicHeight(), mMinSize); 4062 } 4063 4064 public void show() { 4065 if (isShowing()) return; 4066 4067 getPositionListener().addSubscriber(this, true /* local position may change */); 4068 4069 // Make sure the offset is always considered new, even when focusing at same position 4070 mPreviousOffset = -1; 4071 positionAtCursorOffset(getCurrentCursorOffset(), false); 4072 } 4073 4074 protected void dismiss() { 4075 mIsDragging = false; 4076 mContainer.dismiss(); 4077 onDetached(); 4078 } 4079 4080 public void hide() { 4081 dismiss(); 4082 4083 getPositionListener().removeSubscriber(this); 4084 } 4085 4086 public boolean isShowing() { 4087 return mContainer.isShowing(); 4088 } 4089 4090 private boolean isVisible() { 4091 // Always show a dragging handle. 4092 if (mIsDragging) { 4093 return true; 4094 } 4095 4096 if (mTextView.isInBatchEditMode()) { 4097 return false; 4098 } 4099 4100 return isPositionVisible(mPositionX + mHotspotX + getHorizontalOffset(), mPositionY); 4101 } 4102 4103 public abstract int getCurrentCursorOffset(); 4104 4105 protected abstract void updateSelection(int offset); 4106 4107 public abstract void updatePosition(float x, float y); 4108 4109 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 4110 // A HandleView relies on the layout, which may be nulled by external methods 4111 Layout layout = mTextView.getLayout(); 4112 if (layout == null) { 4113 // Will update controllers' state, hiding them and stopping selection mode if needed 4114 prepareCursorControllers(); 4115 return; 4116 } 4117 layout = getActiveLayout(); 4118 4119 boolean offsetChanged = offset != mPreviousOffset; 4120 if (offsetChanged || parentScrolled) { 4121 if (offsetChanged) { 4122 updateSelection(offset); 4123 addPositionToTouchUpFilter(offset); 4124 } 4125 final int line = layout.getLineForOffset(offset); 4126 mPrevLine = line; 4127 4128 mPositionX = getCursorHorizontalPosition(layout, offset) - mHotspotX - 4129 getHorizontalOffset() + getCursorOffset(); 4130 mPositionY = layout.getLineBottom(line); 4131 4132 // Take TextView's padding and scroll into account. 4133 mPositionX += mTextView.viewportToContentHorizontalOffset(); 4134 mPositionY += mTextView.viewportToContentVerticalOffset(); 4135 4136 mPreviousOffset = offset; 4137 mPositionHasChanged = true; 4138 } 4139 } 4140 4141 /** 4142 * Return the clamped horizontal position for the first cursor. 4143 * 4144 * @param layout Text layout. 4145 * @param offset Character offset for the cursor. 4146 * @return The clamped horizontal position for the cursor. 4147 */ 4148 int getCursorHorizontalPosition(Layout layout, int offset) { 4149 return (int) (layout.getPrimaryHorizontal(offset) - 0.5f); 4150 } 4151 4152 public void updatePosition(int parentPositionX, int parentPositionY, 4153 boolean parentPositionChanged, boolean parentScrolled) { 4154 positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled); 4155 if (parentPositionChanged || mPositionHasChanged) { 4156 if (mIsDragging) { 4157 // Update touchToWindow offset in case of parent scrolling while dragging 4158 if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) { 4159 mTouchToWindowOffsetX += parentPositionX - mLastParentX; 4160 mTouchToWindowOffsetY += parentPositionY - mLastParentY; 4161 mLastParentX = parentPositionX; 4162 mLastParentY = parentPositionY; 4163 } 4164 4165 onHandleMoved(); 4166 } 4167 4168 if (isVisible()) { 4169 // Transform to the window coordinates to follow the view tranformation. 4170 final int[] pts = { mPositionX + mHotspotX + getHorizontalOffset(), mPositionY}; 4171 mTextView.transformFromViewToWindowSpace(pts); 4172 pts[0] -= mHotspotX + getHorizontalOffset(); 4173 4174 if (isShowing()) { 4175 mContainer.update(pts[0], pts[1], -1, -1); 4176 } else { 4177 mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, pts[0], pts[1]); 4178 } 4179 } else { 4180 if (isShowing()) { 4181 dismiss(); 4182 } 4183 } 4184 4185 mPositionHasChanged = false; 4186 } 4187 } 4188 4189 @Override 4190 protected void onDraw(Canvas c) { 4191 final int drawWidth = mDrawable.getIntrinsicWidth(); 4192 final int left = getHorizontalOffset(); 4193 4194 mDrawable.setBounds(left, 0, left + drawWidth, mDrawable.getIntrinsicHeight()); 4195 mDrawable.draw(c); 4196 } 4197 4198 private int getHorizontalOffset() { 4199 final int width = getPreferredWidth(); 4200 final int drawWidth = mDrawable.getIntrinsicWidth(); 4201 final int left; 4202 switch (mHorizontalGravity) { 4203 case Gravity.LEFT: 4204 left = 0; 4205 break; 4206 default: 4207 case Gravity.CENTER: 4208 left = (width - drawWidth) / 2; 4209 break; 4210 case Gravity.RIGHT: 4211 left = width - drawWidth; 4212 break; 4213 } 4214 return left; 4215 } 4216 4217 protected int getCursorOffset() { 4218 return 0; 4219 } 4220 4221 @Override 4222 public boolean onTouchEvent(MotionEvent ev) { 4223 updateFloatingToolbarVisibility(ev); 4224 4225 switch (ev.getActionMasked()) { 4226 case MotionEvent.ACTION_DOWN: { 4227 startTouchUpFilter(getCurrentCursorOffset()); 4228 mTouchToWindowOffsetX = ev.getRawX() - mPositionX; 4229 mTouchToWindowOffsetY = ev.getRawY() - mPositionY; 4230 4231 final PositionListener positionListener = getPositionListener(); 4232 mLastParentX = positionListener.getPositionX(); 4233 mLastParentY = positionListener.getPositionY(); 4234 mIsDragging = true; 4235 mPreviousLineTouched = UNSET_LINE; 4236 break; 4237 } 4238 4239 case MotionEvent.ACTION_MOVE: { 4240 final float rawX = ev.getRawX(); 4241 final float rawY = ev.getRawY(); 4242 4243 // Vertical hysteresis: vertical down movement tends to snap to ideal offset 4244 final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY; 4245 final float currentVerticalOffset = rawY - mPositionY - mLastParentY; 4246 float newVerticalOffset; 4247 if (previousVerticalOffset < mIdealVerticalOffset) { 4248 newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset); 4249 newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset); 4250 } else { 4251 newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset); 4252 newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset); 4253 } 4254 mTouchToWindowOffsetY = newVerticalOffset + mLastParentY; 4255 4256 final float newPosX = 4257 rawX - mTouchToWindowOffsetX + mHotspotX + getHorizontalOffset(); 4258 final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY; 4259 4260 updatePosition(newPosX, newPosY); 4261 break; 4262 } 4263 4264 case MotionEvent.ACTION_UP: 4265 filterOnTouchUp(); 4266 mIsDragging = false; 4267 updateDrawable(); 4268 break; 4269 4270 case MotionEvent.ACTION_CANCEL: 4271 mIsDragging = false; 4272 updateDrawable(); 4273 break; 4274 } 4275 return true; 4276 } 4277 4278 public boolean isDragging() { 4279 return mIsDragging; 4280 } 4281 4282 void onHandleMoved() {} 4283 4284 public void onDetached() {} 4285 } 4286 4287 /** 4288 * Returns the active layout (hint or text layout). Note that the text layout can be null. 4289 */ 4290 private Layout getActiveLayout() { 4291 Layout layout = mTextView.getLayout(); 4292 Layout hintLayout = mTextView.getHintLayout(); 4293 if (TextUtils.isEmpty(layout.getText()) && hintLayout != null && 4294 !TextUtils.isEmpty(hintLayout.getText())) { 4295 layout = hintLayout; 4296 } 4297 return layout; 4298 } 4299 4300 private class InsertionHandleView extends HandleView { 4301 private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000; 4302 private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds 4303 4304 // Used to detect taps on the insertion handle, which will affect the insertion action mode 4305 private float mDownPositionX, mDownPositionY; 4306 private Runnable mHider; 4307 4308 public InsertionHandleView(Drawable drawable) { 4309 super(drawable, drawable, com.android.internal.R.id.insertion_handle); 4310 } 4311 4312 @Override 4313 public void show() { 4314 super.show(); 4315 4316 final long durationSinceCutOrCopy = 4317 SystemClock.uptimeMillis() - TextView.sLastCutCopyOrTextChangedTime; 4318 4319 // Cancel the single tap delayed runnable. 4320 if (mInsertionActionModeRunnable != null 4321 && ((mTapState == TAP_STATE_DOUBLE_TAP) 4322 || (mTapState == TAP_STATE_TRIPLE_CLICK) 4323 || isCursorInsideEasyCorrectionSpan())) { 4324 mTextView.removeCallbacks(mInsertionActionModeRunnable); 4325 } 4326 4327 // Prepare and schedule the single tap runnable to run exactly after the double tap 4328 // timeout has passed. 4329 if ((mTapState != TAP_STATE_DOUBLE_TAP) && (mTapState != TAP_STATE_TRIPLE_CLICK) 4330 && !isCursorInsideEasyCorrectionSpan() 4331 && (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION)) { 4332 if (mTextActionMode == null) { 4333 if (mInsertionActionModeRunnable == null) { 4334 mInsertionActionModeRunnable = new Runnable() { 4335 @Override 4336 public void run() { 4337 startInsertionActionMode(); 4338 } 4339 }; 4340 } 4341 mTextView.postDelayed( 4342 mInsertionActionModeRunnable, 4343 ViewConfiguration.getDoubleTapTimeout() + 1); 4344 } 4345 4346 } 4347 4348 hideAfterDelay(); 4349 } 4350 4351 private void hideAfterDelay() { 4352 if (mHider == null) { 4353 mHider = new Runnable() { 4354 public void run() { 4355 hide(); 4356 } 4357 }; 4358 } else { 4359 removeHiderCallback(); 4360 } 4361 mTextView.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT); 4362 } 4363 4364 private void removeHiderCallback() { 4365 if (mHider != null) { 4366 mTextView.removeCallbacks(mHider); 4367 } 4368 } 4369 4370 @Override 4371 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 4372 return drawable.getIntrinsicWidth() / 2; 4373 } 4374 4375 @Override 4376 protected int getHorizontalGravity(boolean isRtlRun) { 4377 return Gravity.CENTER_HORIZONTAL; 4378 } 4379 4380 @Override 4381 protected int getCursorOffset() { 4382 int offset = super.getCursorOffset(); 4383 final Drawable cursor = mCursorCount > 0 ? mCursorDrawable[0] : null; 4384 if (cursor != null) { 4385 cursor.getPadding(mTempRect); 4386 offset += (cursor.getIntrinsicWidth() - mTempRect.left - mTempRect.right) / 2; 4387 } 4388 return offset; 4389 } 4390 4391 @Override 4392 int getCursorHorizontalPosition(Layout layout, int offset) { 4393 final Drawable drawable = mCursorCount > 0 ? mCursorDrawable[0] : null; 4394 if (drawable != null) { 4395 final float horizontal = layout.getPrimaryHorizontal(offset); 4396 return clampCursorHorizontalPosition(drawable, horizontal) + mTempRect.left; 4397 } 4398 return super.getCursorHorizontalPosition(layout, offset); 4399 } 4400 4401 @Override 4402 public boolean onTouchEvent(MotionEvent ev) { 4403 final boolean result = super.onTouchEvent(ev); 4404 4405 switch (ev.getActionMasked()) { 4406 case MotionEvent.ACTION_DOWN: 4407 mDownPositionX = ev.getRawX(); 4408 mDownPositionY = ev.getRawY(); 4409 break; 4410 4411 case MotionEvent.ACTION_UP: 4412 if (!offsetHasBeenChanged()) { 4413 final float deltaX = mDownPositionX - ev.getRawX(); 4414 final float deltaY = mDownPositionY - ev.getRawY(); 4415 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 4416 4417 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 4418 mTextView.getContext()); 4419 final int touchSlop = viewConfiguration.getScaledTouchSlop(); 4420 4421 if (distanceSquared < touchSlop * touchSlop) { 4422 // Tapping on the handle toggles the insertion action mode. 4423 if (mTextActionMode != null) { 4424 stopTextActionMode(); 4425 } else { 4426 startInsertionActionMode(); 4427 } 4428 } 4429 } else { 4430 if (mTextActionMode != null) { 4431 mTextActionMode.invalidateContentRect(); 4432 } 4433 } 4434 hideAfterDelay(); 4435 break; 4436 4437 case MotionEvent.ACTION_CANCEL: 4438 hideAfterDelay(); 4439 break; 4440 4441 default: 4442 break; 4443 } 4444 4445 return result; 4446 } 4447 4448 @Override 4449 public int getCurrentCursorOffset() { 4450 return mTextView.getSelectionStart(); 4451 } 4452 4453 @Override 4454 public void updateSelection(int offset) { 4455 Selection.setSelection((Spannable) mTextView.getText(), offset); 4456 } 4457 4458 @Override 4459 public void updatePosition(float x, float y) { 4460 Layout layout = mTextView.getLayout(); 4461 int offset; 4462 if (layout != null) { 4463 if (mPreviousLineTouched == UNSET_LINE) { 4464 mPreviousLineTouched = mTextView.getLineAtCoordinate(y); 4465 } 4466 int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); 4467 offset = mTextView.getOffsetAtCoordinate(currLine, x); 4468 mPreviousLineTouched = currLine; 4469 } else { 4470 offset = mTextView.getOffsetForPosition(x, y); 4471 } 4472 positionAtCursorOffset(offset, false); 4473 if (mTextActionMode != null) { 4474 mTextActionMode.invalidate(); 4475 } 4476 } 4477 4478 @Override 4479 void onHandleMoved() { 4480 super.onHandleMoved(); 4481 removeHiderCallback(); 4482 } 4483 4484 @Override 4485 public void onDetached() { 4486 super.onDetached(); 4487 removeHiderCallback(); 4488 } 4489 } 4490 4491 @Retention(RetentionPolicy.SOURCE) 4492 @IntDef({HANDLE_TYPE_SELECTION_START, HANDLE_TYPE_SELECTION_END}) 4493 public @interface HandleType {} 4494 public static final int HANDLE_TYPE_SELECTION_START = 0; 4495 public static final int HANDLE_TYPE_SELECTION_END = 1; 4496 4497 private class SelectionHandleView extends HandleView { 4498 // Indicates the handle type, selection start (HANDLE_TYPE_SELECTION_START) or selection 4499 // end (HANDLE_TYPE_SELECTION_END). 4500 @HandleType 4501 private final int mHandleType; 4502 // Indicates whether the cursor is making adjustments within a word. 4503 private boolean mInWord = false; 4504 // Difference between touch position and word boundary position. 4505 private float mTouchWordDelta; 4506 // X value of the previous updatePosition call. 4507 private float mPrevX; 4508 // Indicates if the handle has moved a boundary between LTR and RTL text. 4509 private boolean mLanguageDirectionChanged = false; 4510 // Distance from edge of horizontally scrolling text view 4511 // to use to switch to character mode. 4512 private final float mTextViewEdgeSlop; 4513 // Used to save text view location. 4514 private final int[] mTextViewLocation = new int[2]; 4515 4516 public SelectionHandleView(Drawable drawableLtr, Drawable drawableRtl, int id, 4517 @HandleType int handleType) { 4518 super(drawableLtr, drawableRtl, id); 4519 mHandleType = handleType; 4520 ViewConfiguration viewConfiguration = ViewConfiguration.get(mTextView.getContext()); 4521 mTextViewEdgeSlop = viewConfiguration.getScaledTouchSlop() * 4; 4522 } 4523 4524 private boolean isStartHandle() { 4525 return mHandleType == HANDLE_TYPE_SELECTION_START; 4526 } 4527 4528 @Override 4529 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 4530 if (isRtlRun == isStartHandle()) { 4531 return drawable.getIntrinsicWidth() / 4; 4532 } else { 4533 return (drawable.getIntrinsicWidth() * 3) / 4; 4534 } 4535 } 4536 4537 @Override 4538 protected int getHorizontalGravity(boolean isRtlRun) { 4539 return (isRtlRun == isStartHandle()) ? Gravity.LEFT : Gravity.RIGHT; 4540 } 4541 4542 @Override 4543 public int getCurrentCursorOffset() { 4544 return isStartHandle() ? mTextView.getSelectionStart() : mTextView.getSelectionEnd(); 4545 } 4546 4547 @Override 4548 protected void updateSelection(int offset) { 4549 if (isStartHandle()) { 4550 Selection.setSelection((Spannable) mTextView.getText(), offset, 4551 mTextView.getSelectionEnd()); 4552 } else { 4553 Selection.setSelection((Spannable) mTextView.getText(), 4554 mTextView.getSelectionStart(), offset); 4555 } 4556 updateDrawable(); 4557 if (mTextActionMode != null) { 4558 mTextActionMode.invalidate(); 4559 } 4560 } 4561 4562 @Override 4563 public void updatePosition(float x, float y) { 4564 final Layout layout = mTextView.getLayout(); 4565 if (layout == null) { 4566 // HandleView will deal appropriately in positionAtCursorOffset when 4567 // layout is null. 4568 positionAndAdjustForCrossingHandles(mTextView.getOffsetForPosition(x, y)); 4569 return; 4570 } 4571 4572 if (mPreviousLineTouched == UNSET_LINE) { 4573 mPreviousLineTouched = mTextView.getLineAtCoordinate(y); 4574 } 4575 4576 boolean positionCursor = false; 4577 final int anotherHandleOffset = 4578 isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); 4579 int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); 4580 int initialOffset = mTextView.getOffsetAtCoordinate(currLine, x); 4581 4582 if (isStartHandle() && initialOffset >= anotherHandleOffset 4583 || !isStartHandle() && initialOffset <= anotherHandleOffset) { 4584 // Handles have crossed, bound it to the first selected line and 4585 // adjust by word / char as normal. 4586 currLine = layout.getLineForOffset(anotherHandleOffset); 4587 initialOffset = mTextView.getOffsetAtCoordinate(currLine, x); 4588 } 4589 4590 int offset = initialOffset; 4591 final int wordEnd = getWordEnd(offset); 4592 final int wordStart = getWordStart(offset); 4593 4594 if (mPrevX == UNSET_X_VALUE) { 4595 mPrevX = x; 4596 } 4597 4598 final int currentOffset = getCurrentCursorOffset(); 4599 final boolean rtlAtCurrentOffset = layout.isRtlCharAt(currentOffset); 4600 final boolean atRtl = layout.isRtlCharAt(offset); 4601 final boolean isLvlBoundary = layout.isLevelBoundary(offset); 4602 4603 // We can't determine if the user is expanding or shrinking the selection if they're 4604 // on a bi-di boundary, so until they've moved past the boundary we'll just place 4605 // the cursor at the current position. 4606 if (isLvlBoundary || (rtlAtCurrentOffset && !atRtl) || (!rtlAtCurrentOffset && atRtl)) { 4607 // We're on a boundary or this is the first direction change -- just update 4608 // to the current position. 4609 mLanguageDirectionChanged = true; 4610 mTouchWordDelta = 0.0f; 4611 positionAndAdjustForCrossingHandles(offset); 4612 return; 4613 } else if (mLanguageDirectionChanged && !isLvlBoundary) { 4614 // We've just moved past the boundary so update the position. After this we can 4615 // figure out if the user is expanding or shrinking to go by word or character. 4616 positionAndAdjustForCrossingHandles(offset); 4617 mTouchWordDelta = 0.0f; 4618 mLanguageDirectionChanged = false; 4619 return; 4620 } 4621 4622 boolean isExpanding; 4623 final float xDiff = x - mPrevX; 4624 if (isStartHandle()) { 4625 isExpanding = currLine < mPreviousLineTouched; 4626 } else { 4627 isExpanding = currLine > mPreviousLineTouched; 4628 } 4629 if (atRtl == isStartHandle()) { 4630 isExpanding |= xDiff > 0; 4631 } else { 4632 isExpanding |= xDiff < 0; 4633 } 4634 4635 if (mTextView.getHorizontallyScrolling()) { 4636 if (positionNearEdgeOfScrollingView(x, atRtl) 4637 && ((isStartHandle() && mTextView.getScrollX() != 0) 4638 || (!isStartHandle() 4639 && mTextView.canScrollHorizontally(atRtl ? -1 : 1))) 4640 && ((isExpanding && ((isStartHandle() && offset < currentOffset) 4641 || (!isStartHandle() && offset > currentOffset))) 4642 || !isExpanding)) { 4643 // If we're expanding ensure that the offset is actually expanding compared to 4644 // the current offset, if the handle snapped to the word, the finger position 4645 // may be out of sync and we don't want the selection to jump back. 4646 mTouchWordDelta = 0.0f; 4647 final int nextOffset = (atRtl == isStartHandle()) 4648 ? layout.getOffsetToRightOf(mPreviousOffset) 4649 : layout.getOffsetToLeftOf(mPreviousOffset); 4650 positionAndAdjustForCrossingHandles(nextOffset); 4651 return; 4652 } 4653 } 4654 4655 if (isExpanding) { 4656 // User is increasing the selection. 4657 final boolean snapToWord = !mInWord 4658 || (isStartHandle() ? currLine < mPrevLine : currLine > mPrevLine); 4659 if (snapToWord) { 4660 // Sometimes words can be broken across lines (Chinese, hyphenation). 4661 // We still snap to the word boundary but we only use the letters on the 4662 // current line to determine if the user is far enough into the word to snap. 4663 int wordBoundary = isStartHandle() ? wordStart : wordEnd; 4664 if (layout != null && layout.getLineForOffset(wordBoundary) != currLine) { 4665 wordBoundary = isStartHandle() ? 4666 layout.getLineStart(currLine) : layout.getLineEnd(currLine); 4667 } 4668 final int offsetThresholdToSnap = isStartHandle() 4669 ? wordEnd - ((wordEnd - wordBoundary) / 2) 4670 : wordStart + ((wordBoundary - wordStart) / 2); 4671 if (isStartHandle() 4672 && (offset <= offsetThresholdToSnap || currLine < mPrevLine)) { 4673 // User is far enough into the word or on a different line so we expand by 4674 // word. 4675 offset = wordStart; 4676 } else if (!isStartHandle() 4677 && (offset >= offsetThresholdToSnap || currLine > mPrevLine)) { 4678 // User is far enough into the word or on a different line so we expand by 4679 // word. 4680 offset = wordEnd; 4681 } else { 4682 offset = mPreviousOffset; 4683 } 4684 } 4685 if (layout != null && (isStartHandle() && offset < initialOffset) 4686 || (!isStartHandle() && offset > initialOffset)) { 4687 final float adjustedX = layout.getPrimaryHorizontal(offset); 4688 mTouchWordDelta = 4689 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 4690 } else { 4691 mTouchWordDelta = 0.0f; 4692 } 4693 positionCursor = true; 4694 } else { 4695 final int adjustedOffset = 4696 mTextView.getOffsetAtCoordinate(currLine, x - mTouchWordDelta); 4697 final boolean shrinking = isStartHandle() 4698 ? adjustedOffset > mPreviousOffset || currLine > mPrevLine 4699 : adjustedOffset < mPreviousOffset || currLine < mPrevLine; 4700 if (shrinking) { 4701 // User is shrinking the selection. 4702 if (currLine != mPrevLine) { 4703 // We're on a different line, so we'll snap to word boundaries. 4704 offset = isStartHandle() ? wordStart : wordEnd; 4705 if (layout != null && (isStartHandle() && offset < initialOffset) 4706 || (!isStartHandle() && offset > initialOffset)) { 4707 final float adjustedX = layout.getPrimaryHorizontal(offset); 4708 mTouchWordDelta = 4709 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 4710 } else { 4711 mTouchWordDelta = 0.0f; 4712 } 4713 } else { 4714 offset = adjustedOffset; 4715 } 4716 positionCursor = true; 4717 } else if ((isStartHandle() && adjustedOffset < mPreviousOffset) 4718 || (!isStartHandle() && adjustedOffset > mPreviousOffset)) { 4719 // Handle has jumped to the word boundary, and the user is moving 4720 // their finger towards the handle, the delta should be updated. 4721 mTouchWordDelta = mTextView.convertToLocalHorizontalCoordinate(x) - 4722 layout.getPrimaryHorizontal(mPreviousOffset); 4723 } 4724 } 4725 4726 if (positionCursor) { 4727 mPreviousLineTouched = currLine; 4728 positionAndAdjustForCrossingHandles(offset); 4729 } 4730 mPrevX = x; 4731 } 4732 4733 /** 4734 * @param offset Cursor offset. Must be in [-1, length]. 4735 * @param parentScrolled If the parent has been scrolled or not. 4736 */ 4737 @Override 4738 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 4739 super.positionAtCursorOffset(offset, parentScrolled); 4740 mInWord = (offset != -1) && !getWordIteratorWithText().isBoundary(offset); 4741 } 4742 4743 @Override 4744 public boolean onTouchEvent(MotionEvent event) { 4745 boolean superResult = super.onTouchEvent(event); 4746 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 4747 // Reset the touch word offset and x value when the user 4748 // re-engages the handle. 4749 mTouchWordDelta = 0.0f; 4750 mPrevX = UNSET_X_VALUE; 4751 } 4752 return superResult; 4753 } 4754 4755 private void positionAndAdjustForCrossingHandles(int offset) { 4756 final int anotherHandleOffset = 4757 isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); 4758 if ((isStartHandle() && offset >= anotherHandleOffset) 4759 || (!isStartHandle() && offset <= anotherHandleOffset)) { 4760 // Handles can not cross and selection is at least one character. 4761 offset = getNextCursorOffset(anotherHandleOffset, !isStartHandle()); 4762 mTouchWordDelta = 0.0f; 4763 } 4764 positionAtCursorOffset(offset, false); 4765 } 4766 4767 private boolean positionNearEdgeOfScrollingView(float x, boolean atRtl) { 4768 mTextView.getLocationOnScreen(mTextViewLocation); 4769 boolean nearEdge; 4770 if (atRtl == isStartHandle()) { 4771 int rightEdge = mTextViewLocation[0] + mTextView.getWidth() 4772 - mTextView.getPaddingRight(); 4773 nearEdge = x > rightEdge - mTextViewEdgeSlop; 4774 } else { 4775 int leftEdge = mTextViewLocation[0] + mTextView.getPaddingLeft(); 4776 nearEdge = x < leftEdge + mTextViewEdgeSlop; 4777 } 4778 return nearEdge; 4779 } 4780 } 4781 4782 private int getCurrentLineAdjustedForSlop(Layout layout, int prevLine, float y) { 4783 final int trueLine = mTextView.getLineAtCoordinate(y); 4784 if (layout == null || prevLine > layout.getLineCount() 4785 || layout.getLineCount() <= 0 || prevLine < 0) { 4786 // Invalid parameters, just return whatever line is at y. 4787 return trueLine; 4788 } 4789 4790 if (Math.abs(trueLine - prevLine) >= 2) { 4791 // Only stick to lines if we're within a line of the previous selection. 4792 return trueLine; 4793 } 4794 4795 final float verticalOffset = mTextView.viewportToContentVerticalOffset(); 4796 final int lineCount = layout.getLineCount(); 4797 final float slop = mTextView.getLineHeight() * LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS; 4798 4799 final float firstLineTop = layout.getLineTop(0) + verticalOffset; 4800 final float prevLineTop = layout.getLineTop(prevLine) + verticalOffset; 4801 final float yTopBound = Math.max(prevLineTop - slop, firstLineTop + slop); 4802 4803 final float lastLineBottom = layout.getLineBottom(lineCount - 1) + verticalOffset; 4804 final float prevLineBottom = layout.getLineBottom(prevLine) + verticalOffset; 4805 final float yBottomBound = Math.min(prevLineBottom + slop, lastLineBottom - slop); 4806 4807 // Determine if we've moved lines based on y position and previous line. 4808 int currLine; 4809 if (y <= yTopBound) { 4810 currLine = Math.max(prevLine - 1, 0); 4811 } else if (y >= yBottomBound) { 4812 currLine = Math.min(prevLine + 1, lineCount - 1); 4813 } else { 4814 currLine = prevLine; 4815 } 4816 return currLine; 4817 } 4818 4819 /** 4820 * A CursorController instance can be used to control a cursor in the text. 4821 */ 4822 private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { 4823 /** 4824 * Makes the cursor controller visible on screen. 4825 * See also {@link #hide()}. 4826 */ 4827 public void show(); 4828 4829 /** 4830 * Hide the cursor controller from screen. 4831 * See also {@link #show()}. 4832 */ 4833 public void hide(); 4834 4835 /** 4836 * Called when the view is detached from window. Perform house keeping task, such as 4837 * stopping Runnable thread that would otherwise keep a reference on the context, thus 4838 * preventing the activity from being recycled. 4839 */ 4840 public void onDetached(); 4841 4842 public boolean isCursorBeingModified(); 4843 4844 public boolean isActive(); 4845 } 4846 4847 private class InsertionPointCursorController implements CursorController { 4848 private InsertionHandleView mHandle; 4849 4850 public void show() { 4851 getHandle().show(); 4852 4853 if (mSelectionModifierCursorController != null) { 4854 mSelectionModifierCursorController.hide(); 4855 } 4856 } 4857 4858 public void hide() { 4859 if (mHandle != null) { 4860 mHandle.hide(); 4861 } 4862 } 4863 4864 public void onTouchModeChanged(boolean isInTouchMode) { 4865 if (!isInTouchMode) { 4866 hide(); 4867 } 4868 } 4869 4870 private InsertionHandleView getHandle() { 4871 if (mSelectHandleCenter == null) { 4872 mSelectHandleCenter = mTextView.getContext().getDrawable( 4873 mTextView.mTextSelectHandleRes); 4874 } 4875 if (mHandle == null) { 4876 mHandle = new InsertionHandleView(mSelectHandleCenter); 4877 } 4878 return mHandle; 4879 } 4880 4881 @Override 4882 public void onDetached() { 4883 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 4884 observer.removeOnTouchModeChangeListener(this); 4885 4886 if (mHandle != null) mHandle.onDetached(); 4887 } 4888 4889 @Override 4890 public boolean isCursorBeingModified() { 4891 return mHandle != null && mHandle.isDragging(); 4892 } 4893 4894 @Override 4895 public boolean isActive() { 4896 return mHandle != null && mHandle.isShowing(); 4897 } 4898 } 4899 4900 class SelectionModifierCursorController implements CursorController { 4901 // The cursor controller handles, lazily created when shown. 4902 private SelectionHandleView mStartHandle; 4903 private SelectionHandleView mEndHandle; 4904 // The offsets of that last touch down event. Remembered to start selection there. 4905 private int mMinTouchOffset, mMaxTouchOffset; 4906 4907 private float mDownPositionX, mDownPositionY; 4908 private boolean mGestureStayedInTapRegion; 4909 4910 // Where the user first starts the drag motion. 4911 private int mStartOffset = -1; 4912 4913 private boolean mHaventMovedEnoughToStartDrag; 4914 // The line that a selection happened most recently with the drag accelerator. 4915 private int mLineSelectionIsOn = -1; 4916 // Whether the drag accelerator has selected past the initial line. 4917 private boolean mSwitchedLines = false; 4918 4919 // Indicates the drag accelerator mode that the user is currently using. 4920 private int mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; 4921 // Drag accelerator is inactive. 4922 private static final int DRAG_ACCELERATOR_MODE_INACTIVE = 0; 4923 // Character based selection by dragging. Only for mouse. 4924 private static final int DRAG_ACCELERATOR_MODE_CHARACTER = 1; 4925 // Word based selection by dragging. Enabled after long pressing or double tapping. 4926 private static final int DRAG_ACCELERATOR_MODE_WORD = 2; 4927 // Paragraph based selection by dragging. Enabled after mouse triple click. 4928 private static final int DRAG_ACCELERATOR_MODE_PARAGRAPH = 3; 4929 4930 SelectionModifierCursorController() { 4931 resetTouchOffsets(); 4932 } 4933 4934 public void show() { 4935 if (mTextView.isInBatchEditMode()) { 4936 return; 4937 } 4938 initDrawables(); 4939 initHandles(); 4940 } 4941 4942 private void initDrawables() { 4943 if (mSelectHandleLeft == null) { 4944 mSelectHandleLeft = mTextView.getContext().getDrawable( 4945 mTextView.mTextSelectHandleLeftRes); 4946 } 4947 if (mSelectHandleRight == null) { 4948 mSelectHandleRight = mTextView.getContext().getDrawable( 4949 mTextView.mTextSelectHandleRightRes); 4950 } 4951 } 4952 4953 private void initHandles() { 4954 // Lazy object creation has to be done before updatePosition() is called. 4955 if (mStartHandle == null) { 4956 mStartHandle = new SelectionHandleView(mSelectHandleLeft, mSelectHandleRight, 4957 com.android.internal.R.id.selection_start_handle, 4958 HANDLE_TYPE_SELECTION_START); 4959 } 4960 if (mEndHandle == null) { 4961 mEndHandle = new SelectionHandleView(mSelectHandleRight, mSelectHandleLeft, 4962 com.android.internal.R.id.selection_end_handle, 4963 HANDLE_TYPE_SELECTION_END); 4964 } 4965 4966 mStartHandle.show(); 4967 mEndHandle.show(); 4968 4969 hideInsertionPointCursorController(); 4970 } 4971 4972 public void hide() { 4973 if (mStartHandle != null) mStartHandle.hide(); 4974 if (mEndHandle != null) mEndHandle.hide(); 4975 } 4976 4977 public void enterDrag(int dragAcceleratorMode) { 4978 // Just need to init the handles / hide insertion cursor. 4979 show(); 4980 mDragAcceleratorMode = dragAcceleratorMode; 4981 // Start location of selection. 4982 mStartOffset = mTextView.getOffsetForPosition(mLastDownPositionX, 4983 mLastDownPositionY); 4984 mLineSelectionIsOn = mTextView.getLineAtCoordinate(mLastDownPositionY); 4985 // Don't show the handles until user has lifted finger. 4986 hide(); 4987 4988 // This stops scrolling parents from intercepting the touch event, allowing 4989 // the user to continue dragging across the screen to select text; TextView will 4990 // scroll as necessary. 4991 mTextView.getParent().requestDisallowInterceptTouchEvent(true); 4992 mTextView.cancelLongPress(); 4993 } 4994 4995 public void onTouchEvent(MotionEvent event) { 4996 // This is done even when the View does not have focus, so that long presses can start 4997 // selection and tap can move cursor from this tap position. 4998 final float eventX = event.getX(); 4999 final float eventY = event.getY(); 5000 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 5001 switch (event.getActionMasked()) { 5002 case MotionEvent.ACTION_DOWN: 5003 if (extractedTextModeWillBeStarted()) { 5004 // Prevent duplicating the selection handles until the mode starts. 5005 hide(); 5006 } else { 5007 // Remember finger down position, to be able to start selection from there. 5008 mMinTouchOffset = mMaxTouchOffset = mTextView.getOffsetForPosition( 5009 eventX, eventY); 5010 5011 // Double tap detection 5012 if (mGestureStayedInTapRegion) { 5013 if (mTapState == TAP_STATE_DOUBLE_TAP 5014 || mTapState == TAP_STATE_TRIPLE_CLICK) { 5015 final float deltaX = eventX - mDownPositionX; 5016 final float deltaY = eventY - mDownPositionY; 5017 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 5018 5019 ViewConfiguration viewConfiguration = ViewConfiguration.get( 5020 mTextView.getContext()); 5021 int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop(); 5022 boolean stayedInArea = 5023 distanceSquared < doubleTapSlop * doubleTapSlop; 5024 5025 if (stayedInArea && (isMouse || isPositionOnText(eventX, eventY))) { 5026 if (mTapState == TAP_STATE_DOUBLE_TAP) { 5027 selectCurrentWordAndStartDrag(); 5028 } else if (mTapState == TAP_STATE_TRIPLE_CLICK) { 5029 selectCurrentParagraphAndStartDrag(); 5030 } 5031 mDiscardNextActionUp = true; 5032 } 5033 } 5034 } 5035 5036 mDownPositionX = eventX; 5037 mDownPositionY = eventY; 5038 mGestureStayedInTapRegion = true; 5039 mHaventMovedEnoughToStartDrag = true; 5040 } 5041 break; 5042 5043 case MotionEvent.ACTION_POINTER_DOWN: 5044 case MotionEvent.ACTION_POINTER_UP: 5045 // Handle multi-point gestures. Keep min and max offset positions. 5046 // Only activated for devices that correctly handle multi-touch. 5047 if (mTextView.getContext().getPackageManager().hasSystemFeature( 5048 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { 5049 updateMinAndMaxOffsets(event); 5050 } 5051 break; 5052 5053 case MotionEvent.ACTION_MOVE: 5054 final ViewConfiguration viewConfig = ViewConfiguration.get( 5055 mTextView.getContext()); 5056 final int touchSlop = viewConfig.getScaledTouchSlop(); 5057 5058 if (mGestureStayedInTapRegion || mHaventMovedEnoughToStartDrag) { 5059 final float deltaX = eventX - mDownPositionX; 5060 final float deltaY = eventY - mDownPositionY; 5061 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 5062 5063 if (mGestureStayedInTapRegion) { 5064 int doubleTapTouchSlop = viewConfig.getScaledDoubleTapTouchSlop(); 5065 mGestureStayedInTapRegion = 5066 distanceSquared <= doubleTapTouchSlop * doubleTapTouchSlop; 5067 } 5068 if (mHaventMovedEnoughToStartDrag) { 5069 // We don't start dragging until the user has moved enough. 5070 mHaventMovedEnoughToStartDrag = 5071 distanceSquared <= touchSlop * touchSlop; 5072 } 5073 } 5074 5075 if (isMouse && !isDragAcceleratorActive()) { 5076 final int offset = mTextView.getOffsetForPosition(eventX, eventY); 5077 if (mTextView.hasSelection() 5078 && (!mHaventMovedEnoughToStartDrag || mStartOffset != offset) 5079 && offset >= mTextView.getSelectionStart() 5080 && offset <= mTextView.getSelectionEnd()) { 5081 startDragAndDrop(); 5082 break; 5083 } 5084 5085 if (mStartOffset != offset) { 5086 // Start character based drag accelerator. 5087 stopTextActionMode(); 5088 enterDrag(DRAG_ACCELERATOR_MODE_CHARACTER); 5089 mDiscardNextActionUp = true; 5090 mHaventMovedEnoughToStartDrag = false; 5091 } 5092 } 5093 5094 if (mStartHandle != null && mStartHandle.isShowing()) { 5095 // Don't do the drag if the handles are showing already. 5096 break; 5097 } 5098 5099 updateSelection(event); 5100 break; 5101 5102 case MotionEvent.ACTION_UP: 5103 if (!isDragAcceleratorActive()) { 5104 break; 5105 } 5106 updateSelection(event); 5107 5108 // No longer dragging to select text, let the parent intercept events. 5109 mTextView.getParent().requestDisallowInterceptTouchEvent(false); 5110 5111 int startOffset = mTextView.getSelectionStart(); 5112 int endOffset = mTextView.getSelectionEnd(); 5113 5114 // Since we don't let drag handles pass once they're visible, we need to 5115 // make sure the start / end locations are correct because the user *can* 5116 // switch directions during the initial drag. 5117 if (endOffset < startOffset) { 5118 int tmp = endOffset; 5119 endOffset = startOffset; 5120 startOffset = tmp; 5121 5122 // Also update the selection with the right offsets in this case. 5123 Selection.setSelection((Spannable) mTextView.getText(), 5124 startOffset, endOffset); 5125 } 5126 if (startOffset != endOffset) { 5127 startSelectionActionMode(); 5128 } 5129 5130 // No longer the first dragging motion, reset. 5131 resetDragAcceleratorState(); 5132 break; 5133 } 5134 } 5135 5136 private void updateSelection(MotionEvent event) { 5137 if (mTextView.getLayout() != null) { 5138 switch (mDragAcceleratorMode) { 5139 case DRAG_ACCELERATOR_MODE_CHARACTER: 5140 updateCharacterBasedSelection(event); 5141 break; 5142 case DRAG_ACCELERATOR_MODE_WORD: 5143 updateWordBasedSelection(event); 5144 break; 5145 case DRAG_ACCELERATOR_MODE_PARAGRAPH: 5146 updateParagraphBasedSelection(event); 5147 break; 5148 } 5149 } 5150 } 5151 5152 /** 5153 * If the TextView allows text selection, selects the current paragraph and starts a drag. 5154 * 5155 * @return true if the drag was started. 5156 */ 5157 private boolean selectCurrentParagraphAndStartDrag() { 5158 if (mInsertionActionModeRunnable != null) { 5159 mTextView.removeCallbacks(mInsertionActionModeRunnable); 5160 } 5161 stopTextActionMode(); 5162 if (!selectCurrentParagraph()) { 5163 return false; 5164 } 5165 enterDrag(SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_PARAGRAPH); 5166 return true; 5167 } 5168 5169 private void updateCharacterBasedSelection(MotionEvent event) { 5170 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 5171 Selection.setSelection((Spannable) mTextView.getText(), mStartOffset, offset); 5172 } 5173 5174 private void updateWordBasedSelection(MotionEvent event) { 5175 if (mHaventMovedEnoughToStartDrag) { 5176 return; 5177 } 5178 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 5179 final ViewConfiguration viewConfig = ViewConfiguration.get( 5180 mTextView.getContext()); 5181 final float eventX = event.getX(); 5182 final float eventY = event.getY(); 5183 final int currLine; 5184 if (isMouse) { 5185 // No need to offset the y coordinate for mouse input. 5186 currLine = mTextView.getLineAtCoordinate(eventY); 5187 } else { 5188 float y = eventY; 5189 if (mSwitchedLines) { 5190 // Offset the finger by the same vertical offset as the handles. 5191 // This improves visibility of the content being selected by 5192 // shifting the finger below the content, this is applied once 5193 // the user has switched lines. 5194 final int touchSlop = viewConfig.getScaledTouchSlop(); 5195 final float fingerOffset = (mStartHandle != null) 5196 ? mStartHandle.getIdealVerticalOffset() 5197 : touchSlop; 5198 y = eventY - fingerOffset; 5199 } 5200 5201 currLine = getCurrentLineAdjustedForSlop(mTextView.getLayout(), mLineSelectionIsOn, 5202 y); 5203 if (!mSwitchedLines && currLine != mLineSelectionIsOn) { 5204 // Break early here, we want to offset the finger position from 5205 // the selection highlight, once the user moved their finger 5206 // to a different line we should apply the offset and *not* switch 5207 // lines until recomputing the position with the finger offset. 5208 mSwitchedLines = true; 5209 return; 5210 } 5211 } 5212 5213 int startOffset; 5214 int offset = mTextView.getOffsetAtCoordinate(currLine, eventX); 5215 // Snap to word boundaries. 5216 if (mStartOffset < offset) { 5217 // Expanding with end handle. 5218 offset = getWordEnd(offset); 5219 startOffset = getWordStart(mStartOffset); 5220 } else { 5221 // Expanding with start handle. 5222 offset = getWordStart(offset); 5223 startOffset = getWordEnd(mStartOffset); 5224 } 5225 mLineSelectionIsOn = currLine; 5226 Selection.setSelection((Spannable) mTextView.getText(), 5227 startOffset, offset); 5228 } 5229 5230 private void updateParagraphBasedSelection(MotionEvent event) { 5231 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 5232 5233 final int start = Math.min(offset, mStartOffset); 5234 final int end = Math.max(offset, mStartOffset); 5235 final long paragraphsRange = getParagraphsRange(start, end); 5236 final int selectionStart = TextUtils.unpackRangeStartFromLong(paragraphsRange); 5237 final int selectionEnd = TextUtils.unpackRangeEndFromLong(paragraphsRange); 5238 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 5239 } 5240 5241 /** 5242 * @param event 5243 */ 5244 private void updateMinAndMaxOffsets(MotionEvent event) { 5245 int pointerCount = event.getPointerCount(); 5246 for (int index = 0; index < pointerCount; index++) { 5247 int offset = mTextView.getOffsetForPosition(event.getX(index), event.getY(index)); 5248 if (offset < mMinTouchOffset) mMinTouchOffset = offset; 5249 if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; 5250 } 5251 } 5252 5253 public int getMinTouchOffset() { 5254 return mMinTouchOffset; 5255 } 5256 5257 public int getMaxTouchOffset() { 5258 return mMaxTouchOffset; 5259 } 5260 5261 public void resetTouchOffsets() { 5262 mMinTouchOffset = mMaxTouchOffset = -1; 5263 resetDragAcceleratorState(); 5264 } 5265 5266 private void resetDragAcceleratorState() { 5267 mStartOffset = -1; 5268 mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; 5269 mSwitchedLines = false; 5270 final int selectionStart = mTextView.getSelectionStart(); 5271 final int selectionEnd = mTextView.getSelectionEnd(); 5272 if (selectionStart > selectionEnd) { 5273 Selection.setSelection((Spannable) mTextView.getText(), 5274 selectionEnd, selectionStart); 5275 } 5276 } 5277 5278 /** 5279 * @return true iff this controller is currently used to move the selection start. 5280 */ 5281 public boolean isSelectionStartDragged() { 5282 return mStartHandle != null && mStartHandle.isDragging(); 5283 } 5284 5285 @Override 5286 public boolean isCursorBeingModified() { 5287 return isDragAcceleratorActive() || isSelectionStartDragged() 5288 || (mEndHandle != null && mEndHandle.isDragging()); 5289 } 5290 5291 /** 5292 * @return true if the user is selecting text using the drag accelerator. 5293 */ 5294 public boolean isDragAcceleratorActive() { 5295 return mDragAcceleratorMode != DRAG_ACCELERATOR_MODE_INACTIVE; 5296 } 5297 5298 public void onTouchModeChanged(boolean isInTouchMode) { 5299 if (!isInTouchMode) { 5300 hide(); 5301 } 5302 } 5303 5304 @Override 5305 public void onDetached() { 5306 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 5307 observer.removeOnTouchModeChangeListener(this); 5308 5309 if (mStartHandle != null) mStartHandle.onDetached(); 5310 if (mEndHandle != null) mEndHandle.onDetached(); 5311 } 5312 5313 @Override 5314 public boolean isActive() { 5315 return mStartHandle != null && mStartHandle.isShowing(); 5316 } 5317 } 5318 5319 private class CorrectionHighlighter { 5320 private final Path mPath = new Path(); 5321 private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 5322 private int mStart, mEnd; 5323 private long mFadingStartTime; 5324 private RectF mTempRectF; 5325 private final static int FADE_OUT_DURATION = 400; 5326 5327 public CorrectionHighlighter() { 5328 mPaint.setCompatibilityScaling(mTextView.getResources().getCompatibilityInfo(). 5329 applicationScale); 5330 mPaint.setStyle(Paint.Style.FILL); 5331 } 5332 5333 public void highlight(CorrectionInfo info) { 5334 mStart = info.getOffset(); 5335 mEnd = mStart + info.getNewText().length(); 5336 mFadingStartTime = SystemClock.uptimeMillis(); 5337 5338 if (mStart < 0 || mEnd < 0) { 5339 stopAnimation(); 5340 } 5341 } 5342 5343 public void draw(Canvas canvas, int cursorOffsetVertical) { 5344 if (updatePath() && updatePaint()) { 5345 if (cursorOffsetVertical != 0) { 5346 canvas.translate(0, cursorOffsetVertical); 5347 } 5348 5349 canvas.drawPath(mPath, mPaint); 5350 5351 if (cursorOffsetVertical != 0) { 5352 canvas.translate(0, -cursorOffsetVertical); 5353 } 5354 invalidate(true); // TODO invalidate cursor region only 5355 } else { 5356 stopAnimation(); 5357 invalidate(false); // TODO invalidate cursor region only 5358 } 5359 } 5360 5361 private boolean updatePaint() { 5362 final long duration = SystemClock.uptimeMillis() - mFadingStartTime; 5363 if (duration > FADE_OUT_DURATION) return false; 5364 5365 final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; 5366 final int highlightColorAlpha = Color.alpha(mTextView.mHighlightColor); 5367 final int color = (mTextView.mHighlightColor & 0x00FFFFFF) + 5368 ((int) (highlightColorAlpha * coef) << 24); 5369 mPaint.setColor(color); 5370 return true; 5371 } 5372 5373 private boolean updatePath() { 5374 final Layout layout = mTextView.getLayout(); 5375 if (layout == null) return false; 5376 5377 // Update in case text is edited while the animation is run 5378 final int length = mTextView.getText().length(); 5379 int start = Math.min(length, mStart); 5380 int end = Math.min(length, mEnd); 5381 5382 mPath.reset(); 5383 layout.getSelectionPath(start, end, mPath); 5384 return true; 5385 } 5386 5387 private void invalidate(boolean delayed) { 5388 if (mTextView.getLayout() == null) return; 5389 5390 if (mTempRectF == null) mTempRectF = new RectF(); 5391 mPath.computeBounds(mTempRectF, false); 5392 5393 int left = mTextView.getCompoundPaddingLeft(); 5394 int top = mTextView.getExtendedPaddingTop() + mTextView.getVerticalOffset(true); 5395 5396 if (delayed) { 5397 mTextView.postInvalidateOnAnimation( 5398 left + (int) mTempRectF.left, top + (int) mTempRectF.top, 5399 left + (int) mTempRectF.right, top + (int) mTempRectF.bottom); 5400 } else { 5401 mTextView.postInvalidate((int) mTempRectF.left, (int) mTempRectF.top, 5402 (int) mTempRectF.right, (int) mTempRectF.bottom); 5403 } 5404 } 5405 5406 private void stopAnimation() { 5407 Editor.this.mCorrectionHighlighter = null; 5408 } 5409 } 5410 5411 private static class ErrorPopup extends PopupWindow { 5412 private boolean mAbove = false; 5413 private final TextView mView; 5414 private int mPopupInlineErrorBackgroundId = 0; 5415 private int mPopupInlineErrorAboveBackgroundId = 0; 5416 5417 ErrorPopup(TextView v, int width, int height) { 5418 super(v, width, height); 5419 mView = v; 5420 // Make sure the TextView has a background set as it will be used the first time it is 5421 // shown and positioned. Initialized with below background, which should have 5422 // dimensions identical to the above version for this to work (and is more likely). 5423 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 5424 com.android.internal.R.styleable.Theme_errorMessageBackground); 5425 mView.setBackgroundResource(mPopupInlineErrorBackgroundId); 5426 } 5427 5428 void fixDirection(boolean above) { 5429 mAbove = above; 5430 5431 if (above) { 5432 mPopupInlineErrorAboveBackgroundId = 5433 getResourceId(mPopupInlineErrorAboveBackgroundId, 5434 com.android.internal.R.styleable.Theme_errorMessageAboveBackground); 5435 } else { 5436 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 5437 com.android.internal.R.styleable.Theme_errorMessageBackground); 5438 } 5439 5440 mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId : 5441 mPopupInlineErrorBackgroundId); 5442 } 5443 5444 private int getResourceId(int currentId, int index) { 5445 if (currentId == 0) { 5446 TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( 5447 R.styleable.Theme); 5448 currentId = styledAttributes.getResourceId(index, 0); 5449 styledAttributes.recycle(); 5450 } 5451 return currentId; 5452 } 5453 5454 @Override 5455 public void update(int x, int y, int w, int h, boolean force) { 5456 super.update(x, y, w, h, force); 5457 5458 boolean above = isAboveAnchor(); 5459 if (above != mAbove) { 5460 fixDirection(above); 5461 } 5462 } 5463 } 5464 5465 static class InputContentType { 5466 int imeOptions = EditorInfo.IME_NULL; 5467 String privateImeOptions; 5468 CharSequence imeActionLabel; 5469 int imeActionId; 5470 Bundle extras; 5471 OnEditorActionListener onEditorActionListener; 5472 boolean enterDown; 5473 LocaleList imeHintLocales; 5474 } 5475 5476 static class InputMethodState { 5477 ExtractedTextRequest mExtractedTextRequest; 5478 final ExtractedText mExtractedText = new ExtractedText(); 5479 int mBatchEditNesting; 5480 boolean mCursorChanged; 5481 boolean mSelectionModeChanged; 5482 boolean mContentChanged; 5483 int mChangedStart, mChangedEnd, mChangedDelta; 5484 } 5485 5486 /** 5487 * @return True iff (start, end) is a valid range within the text. 5488 */ 5489 private static boolean isValidRange(CharSequence text, int start, int end) { 5490 return 0 <= start && start <= end && end <= text.length(); 5491 } 5492 5493 @VisibleForTesting 5494 public SuggestionsPopupWindow getSuggestionsPopupWindowForTesting() { 5495 return mSuggestionsPopupWindow; 5496 } 5497 5498 /** 5499 * An InputFilter that monitors text input to maintain undo history. It does not modify the 5500 * text being typed (and hence always returns null from the filter() method). 5501 */ 5502 public static class UndoInputFilter implements InputFilter { 5503 private final Editor mEditor; 5504 5505 // Whether the current filter pass is directly caused by an end-user text edit. 5506 private boolean mIsUserEdit; 5507 5508 // Whether the text field is handling an IME composition. Must be parceled in case the user 5509 // rotates the screen during composition. 5510 private boolean mHasComposition; 5511 5512 public UndoInputFilter(Editor editor) { 5513 mEditor = editor; 5514 } 5515 5516 public void saveInstanceState(Parcel parcel) { 5517 parcel.writeInt(mIsUserEdit ? 1 : 0); 5518 parcel.writeInt(mHasComposition ? 1 : 0); 5519 } 5520 5521 public void restoreInstanceState(Parcel parcel) { 5522 mIsUserEdit = parcel.readInt() != 0; 5523 mHasComposition = parcel.readInt() != 0; 5524 } 5525 5526 /** 5527 * Signals that a user-triggered edit is starting. 5528 */ 5529 public void beginBatchEdit() { 5530 if (DEBUG_UNDO) Log.d(TAG, "beginBatchEdit"); 5531 mIsUserEdit = true; 5532 } 5533 5534 public void endBatchEdit() { 5535 if (DEBUG_UNDO) Log.d(TAG, "endBatchEdit"); 5536 mIsUserEdit = false; 5537 } 5538 5539 @Override 5540 public CharSequence filter(CharSequence source, int start, int end, 5541 Spanned dest, int dstart, int dend) { 5542 if (DEBUG_UNDO) { 5543 Log.d(TAG, "filter: source=" + source + " (" + start + "-" + end + ") " + 5544 "dest=" + dest + " (" + dstart + "-" + dend + ")"); 5545 } 5546 5547 // Check to see if this edit should be tracked for undo. 5548 if (!canUndoEdit(source, start, end, dest, dstart, dend)) { 5549 return null; 5550 } 5551 5552 // Check for and handle IME composition edits. 5553 if (handleCompositionEdit(source, start, end, dstart)) { 5554 return null; 5555 } 5556 5557 // Handle keyboard edits. 5558 handleKeyboardEdit(source, start, end, dest, dstart, dend); 5559 return null; 5560 } 5561 5562 /** 5563 * Returns true iff the edit was handled, either because it should be ignored or because 5564 * this function created an undo operation for it. 5565 */ 5566 private boolean handleCompositionEdit(CharSequence source, int start, int end, int dstart) { 5567 // Ignore edits while the user is composing. 5568 if (isComposition(source)) { 5569 mHasComposition = true; 5570 return true; 5571 } 5572 final boolean hadComposition = mHasComposition; 5573 mHasComposition = false; 5574 5575 // Check for the transition out of the composing state. 5576 if (hadComposition) { 5577 // If there was no text the user canceled composition. Ignore the edit. 5578 if (start == end) { 5579 return true; 5580 } 5581 5582 // Otherwise the user inserted the composition. 5583 String newText = TextUtils.substring(source, start, end); 5584 EditOperation edit = new EditOperation(mEditor, "", dstart, newText); 5585 recordEdit(edit, false /* forceMerge */); 5586 return true; 5587 } 5588 5589 // This was neither a composition event nor a transition out of composing. 5590 return false; 5591 } 5592 5593 private void handleKeyboardEdit(CharSequence source, int start, int end, 5594 Spanned dest, int dstart, int dend) { 5595 // An application may install a TextWatcher to provide additional modifications after 5596 // the initial input filters run (e.g. a credit card formatter that adds spaces to a 5597 // string). This results in multiple filter() calls for what the user considers to be 5598 // a single operation. Always undo the whole set of changes in one step. 5599 final boolean forceMerge = isInTextWatcher(); 5600 5601 // Build a new operation with all the information from this edit. 5602 String newText = TextUtils.substring(source, start, end); 5603 String oldText = TextUtils.substring(dest, dstart, dend); 5604 EditOperation edit = new EditOperation(mEditor, oldText, dstart, newText); 5605 recordEdit(edit, forceMerge); 5606 } 5607 5608 /** 5609 * Fetches the last undo operation and checks to see if a new edit should be merged into it. 5610 * If forceMerge is true then the new edit is always merged. 5611 */ 5612 private void recordEdit(EditOperation edit, boolean forceMerge) { 5613 // Fetch the last edit operation and attempt to merge in the new edit. 5614 final UndoManager um = mEditor.mUndoManager; 5615 um.beginUpdate("Edit text"); 5616 EditOperation lastEdit = um.getLastOperation( 5617 EditOperation.class, mEditor.mUndoOwner, UndoManager.MERGE_MODE_UNIQUE); 5618 if (lastEdit == null) { 5619 // Add this as the first edit. 5620 if (DEBUG_UNDO) Log.d(TAG, "filter: adding first op " + edit); 5621 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5622 } else if (forceMerge) { 5623 // Forced merges take priority because they could be the result of a non-user-edit 5624 // change and this case should not create a new undo operation. 5625 if (DEBUG_UNDO) Log.d(TAG, "filter: force merge " + edit); 5626 lastEdit.forceMergeWith(edit); 5627 } else if (!mIsUserEdit) { 5628 // An application directly modified the Editable outside of a text edit. Treat this 5629 // as a new change and don't attempt to merge. 5630 if (DEBUG_UNDO) Log.d(TAG, "non-user edit, new op " + edit); 5631 um.commitState(mEditor.mUndoOwner); 5632 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5633 } else if (lastEdit.mergeWith(edit)) { 5634 // Merge succeeded, nothing else to do. 5635 if (DEBUG_UNDO) Log.d(TAG, "filter: merge succeeded, created " + lastEdit); 5636 } else { 5637 // Could not merge with the last edit, so commit the last edit and add this edit. 5638 if (DEBUG_UNDO) Log.d(TAG, "filter: merge failed, adding " + edit); 5639 um.commitState(mEditor.mUndoOwner); 5640 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5641 } 5642 um.endUpdate(); 5643 } 5644 5645 private boolean canUndoEdit(CharSequence source, int start, int end, 5646 Spanned dest, int dstart, int dend) { 5647 if (!mEditor.mAllowUndo) { 5648 if (DEBUG_UNDO) Log.d(TAG, "filter: undo is disabled"); 5649 return false; 5650 } 5651 5652 if (mEditor.mUndoManager.isInUndo()) { 5653 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping, currently performing undo/redo"); 5654 return false; 5655 } 5656 5657 // Text filters run before input operations are applied. However, some input operations 5658 // are invalid and will throw exceptions when applied. This is common in tests. Don't 5659 // attempt to undo invalid operations. 5660 if (!isValidRange(source, start, end) || !isValidRange(dest, dstart, dend)) { 5661 if (DEBUG_UNDO) Log.d(TAG, "filter: invalid op"); 5662 return false; 5663 } 5664 5665 // Earlier filters can rewrite input to be a no-op, for example due to a length limit 5666 // on an input field. Skip no-op changes. 5667 if (start == end && dstart == dend) { 5668 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping no-op"); 5669 return false; 5670 } 5671 5672 return true; 5673 } 5674 5675 private boolean isComposition(CharSequence source) { 5676 if (!(source instanceof Spannable)) { 5677 return false; 5678 } 5679 // This is a composition edit if the source has a non-zero-length composing span. 5680 Spannable text = (Spannable) source; 5681 int composeBegin = EditableInputConnection.getComposingSpanStart(text); 5682 int composeEnd = EditableInputConnection.getComposingSpanEnd(text); 5683 return composeBegin < composeEnd; 5684 } 5685 5686 private boolean isInTextWatcher() { 5687 CharSequence text = mEditor.mTextView.getText(); 5688 return (text instanceof SpannableStringBuilder) 5689 && ((SpannableStringBuilder) text).getTextWatcherDepth() > 0; 5690 } 5691 } 5692 5693 /** 5694 * An operation to undo a single "edit" to a text view. 5695 */ 5696 public static class EditOperation extends UndoOperation<Editor> { 5697 private static final int TYPE_INSERT = 0; 5698 private static final int TYPE_DELETE = 1; 5699 private static final int TYPE_REPLACE = 2; 5700 5701 private int mType; 5702 private String mOldText; 5703 private int mOldTextStart; 5704 private String mNewText; 5705 private int mNewTextStart; 5706 5707 private int mOldCursorPos; 5708 private int mNewCursorPos; 5709 5710 /** 5711 * Constructs an edit operation from a text input operation on editor that replaces the 5712 * oldText starting at dstart with newText. 5713 */ 5714 public EditOperation(Editor editor, String oldText, int dstart, String newText) { 5715 super(editor.mUndoOwner); 5716 mOldText = oldText; 5717 mNewText = newText; 5718 5719 // Determine the type of the edit and store where it occurred. Avoid storing 5720 // irrevelant data (e.g. mNewTextStart for a delete) because that makes the 5721 // merging logic more complex (e.g. merging deletes could lead to mNewTextStart being 5722 // outside the bounds of the final text). 5723 if (mNewText.length() > 0 && mOldText.length() == 0) { 5724 mType = TYPE_INSERT; 5725 mNewTextStart = dstart; 5726 } else if (mNewText.length() == 0 && mOldText.length() > 0) { 5727 mType = TYPE_DELETE; 5728 mOldTextStart = dstart; 5729 } else { 5730 mType = TYPE_REPLACE; 5731 mOldTextStart = mNewTextStart = dstart; 5732 } 5733 5734 // Store cursor data. 5735 mOldCursorPos = editor.mTextView.getSelectionStart(); 5736 mNewCursorPos = dstart + mNewText.length(); 5737 } 5738 5739 public EditOperation(Parcel src, ClassLoader loader) { 5740 super(src, loader); 5741 mType = src.readInt(); 5742 mOldText = src.readString(); 5743 mOldTextStart = src.readInt(); 5744 mNewText = src.readString(); 5745 mNewTextStart = src.readInt(); 5746 mOldCursorPos = src.readInt(); 5747 mNewCursorPos = src.readInt(); 5748 } 5749 5750 @Override 5751 public void writeToParcel(Parcel dest, int flags) { 5752 dest.writeInt(mType); 5753 dest.writeString(mOldText); 5754 dest.writeInt(mOldTextStart); 5755 dest.writeString(mNewText); 5756 dest.writeInt(mNewTextStart); 5757 dest.writeInt(mOldCursorPos); 5758 dest.writeInt(mNewCursorPos); 5759 } 5760 5761 private int getNewTextEnd() { 5762 return mNewTextStart + mNewText.length(); 5763 } 5764 5765 private int getOldTextEnd() { 5766 return mOldTextStart + mOldText.length(); 5767 } 5768 5769 @Override 5770 public void commit() { 5771 } 5772 5773 @Override 5774 public void undo() { 5775 if (DEBUG_UNDO) Log.d(TAG, "undo"); 5776 // Remove the new text and insert the old. 5777 Editor editor = getOwnerData(); 5778 Editable text = (Editable) editor.mTextView.getText(); 5779 modifyText(text, mNewTextStart, getNewTextEnd(), mOldText, mOldTextStart, 5780 mOldCursorPos); 5781 } 5782 5783 @Override 5784 public void redo() { 5785 if (DEBUG_UNDO) Log.d(TAG, "redo"); 5786 // Remove the old text and insert the new. 5787 Editor editor = getOwnerData(); 5788 Editable text = (Editable) editor.mTextView.getText(); 5789 modifyText(text, mOldTextStart, getOldTextEnd(), mNewText, mNewTextStart, 5790 mNewCursorPos); 5791 } 5792 5793 /** 5794 * Attempts to merge this existing operation with a new edit. 5795 * @param edit The new edit operation. 5796 * @return If the merge succeeded, returns true. Otherwise returns false and leaves this 5797 * object unchanged. 5798 */ 5799 private boolean mergeWith(EditOperation edit) { 5800 if (DEBUG_UNDO) { 5801 Log.d(TAG, "mergeWith old " + this); 5802 Log.d(TAG, "mergeWith new " + edit); 5803 } 5804 switch (mType) { 5805 case TYPE_INSERT: 5806 return mergeInsertWith(edit); 5807 case TYPE_DELETE: 5808 return mergeDeleteWith(edit); 5809 case TYPE_REPLACE: 5810 return mergeReplaceWith(edit); 5811 default: 5812 return false; 5813 } 5814 } 5815 5816 private boolean mergeInsertWith(EditOperation edit) { 5817 // Only merge continuous insertions. 5818 if (edit.mType != TYPE_INSERT) { 5819 return false; 5820 } 5821 // Only merge insertions that are contiguous. 5822 if (getNewTextEnd() != edit.mNewTextStart) { 5823 return false; 5824 } 5825 mNewText += edit.mNewText; 5826 mNewCursorPos = edit.mNewCursorPos; 5827 return true; 5828 } 5829 5830 // TODO: Support forward delete. 5831 private boolean mergeDeleteWith(EditOperation edit) { 5832 // Only merge continuous deletes. 5833 if (edit.mType != TYPE_DELETE) { 5834 return false; 5835 } 5836 // Only merge deletions that are contiguous. 5837 if (mOldTextStart != edit.getOldTextEnd()) { 5838 return false; 5839 } 5840 mOldTextStart = edit.mOldTextStart; 5841 mOldText = edit.mOldText + mOldText; 5842 mNewCursorPos = edit.mNewCursorPos; 5843 return true; 5844 } 5845 5846 private boolean mergeReplaceWith(EditOperation edit) { 5847 // Replacements can merge only with adjacent inserts. 5848 if (edit.mType != TYPE_INSERT || getNewTextEnd() != edit.mNewTextStart) { 5849 return false; 5850 } 5851 mOldText += edit.mOldText; 5852 mNewText += edit.mNewText; 5853 mNewCursorPos = edit.mNewCursorPos; 5854 return true; 5855 } 5856 5857 /** 5858 * Forcibly creates a single merged edit operation by simulating the entire text 5859 * contents being replaced. 5860 */ 5861 public void forceMergeWith(EditOperation edit) { 5862 if (DEBUG_UNDO) Log.d(TAG, "forceMerge"); 5863 Editor editor = getOwnerData(); 5864 5865 // Copy the text of the current field. 5866 // NOTE: Using StringBuilder instead of SpannableStringBuilder would be somewhat faster, 5867 // but would require two parallel implementations of modifyText() because Editable and 5868 // StringBuilder do not share an interface for replace/delete/insert. 5869 Editable editable = (Editable) editor.mTextView.getText(); 5870 Editable originalText = new SpannableStringBuilder(editable.toString()); 5871 5872 // Roll back the last operation. 5873 modifyText(originalText, mNewTextStart, getNewTextEnd(), mOldText, mOldTextStart, 5874 mOldCursorPos); 5875 5876 // Clone the text again and apply the new operation. 5877 Editable finalText = new SpannableStringBuilder(editable.toString()); 5878 modifyText(finalText, edit.mOldTextStart, edit.getOldTextEnd(), edit.mNewText, 5879 edit.mNewTextStart, edit.mNewCursorPos); 5880 5881 // Convert this operation into a non-mergeable replacement of the entire string. 5882 mType = TYPE_REPLACE; 5883 mNewText = finalText.toString(); 5884 mNewTextStart = 0; 5885 mOldText = originalText.toString(); 5886 mOldTextStart = 0; 5887 mNewCursorPos = edit.mNewCursorPos; 5888 // mOldCursorPos is unchanged. 5889 } 5890 5891 private static void modifyText(Editable text, int deleteFrom, int deleteTo, 5892 CharSequence newText, int newTextInsertAt, int newCursorPos) { 5893 // Apply the edit if it is still valid. 5894 if (isValidRange(text, deleteFrom, deleteTo) && 5895 newTextInsertAt <= text.length() - (deleteTo - deleteFrom)) { 5896 if (deleteFrom != deleteTo) { 5897 text.delete(deleteFrom, deleteTo); 5898 } 5899 if (newText.length() != 0) { 5900 text.insert(newTextInsertAt, newText); 5901 } 5902 } 5903 // Restore the cursor position. If there wasn't an old cursor (newCursorPos == -1) then 5904 // don't explicitly set it and rely on SpannableStringBuilder to position it. 5905 // TODO: Select all the text that was undone. 5906 if (0 <= newCursorPos && newCursorPos <= text.length()) { 5907 Selection.setSelection(text, newCursorPos); 5908 } 5909 } 5910 5911 private String getTypeString() { 5912 switch (mType) { 5913 case TYPE_INSERT: 5914 return "insert"; 5915 case TYPE_DELETE: 5916 return "delete"; 5917 case TYPE_REPLACE: 5918 return "replace"; 5919 default: 5920 return ""; 5921 } 5922 } 5923 5924 @Override 5925 public String toString() { 5926 return "[mType=" + getTypeString() + ", " + 5927 "mOldText=" + mOldText + ", " + 5928 "mOldTextStart=" + mOldTextStart + ", " + 5929 "mNewText=" + mNewText + ", " + 5930 "mNewTextStart=" + mNewTextStart + ", " + 5931 "mOldCursorPos=" + mOldCursorPos + ", " + 5932 "mNewCursorPos=" + mNewCursorPos + "]"; 5933 } 5934 5935 public static final Parcelable.ClassLoaderCreator<EditOperation> CREATOR 5936 = new Parcelable.ClassLoaderCreator<EditOperation>() { 5937 @Override 5938 public EditOperation createFromParcel(Parcel in) { 5939 return new EditOperation(in, null); 5940 } 5941 5942 @Override 5943 public EditOperation createFromParcel(Parcel in, ClassLoader loader) { 5944 return new EditOperation(in, loader); 5945 } 5946 5947 @Override 5948 public EditOperation[] newArray(int size) { 5949 return new EditOperation[size]; 5950 } 5951 }; 5952 } 5953 5954 /** 5955 * A helper for enabling and handling "PROCESS_TEXT" menu actions. 5956 * These allow external applications to plug into currently selected text. 5957 */ 5958 static final class ProcessTextIntentActionsHandler { 5959 5960 private final Editor mEditor; 5961 private final TextView mTextView; 5962 private final PackageManager mPackageManager; 5963 private final SparseArray<Intent> mAccessibilityIntents = new SparseArray<Intent>(); 5964 private final SparseArray<AccessibilityNodeInfo.AccessibilityAction> mAccessibilityActions 5965 = new SparseArray<AccessibilityNodeInfo.AccessibilityAction>(); 5966 5967 private ProcessTextIntentActionsHandler(Editor editor) { 5968 mEditor = Preconditions.checkNotNull(editor); 5969 mTextView = Preconditions.checkNotNull(mEditor.mTextView); 5970 mPackageManager = Preconditions.checkNotNull( 5971 mTextView.getContext().getPackageManager()); 5972 } 5973 5974 /** 5975 * Adds "PROCESS_TEXT" menu items to the specified menu. 5976 */ 5977 public void onInitializeMenu(Menu menu) { 5978 int i = 0; 5979 for (ResolveInfo resolveInfo : getSupportedActivities()) { 5980 menu.add(Menu.NONE, Menu.NONE, 5981 Editor.MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START + i++, 5982 getLabel(resolveInfo)) 5983 .setIntent(createProcessTextIntentForResolveInfo(resolveInfo)) 5984 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 5985 } 5986 } 5987 5988 /** 5989 * Performs a "PROCESS_TEXT" action if there is one associated with the specified 5990 * menu item. 5991 * 5992 * @return True if the action was performed, false otherwise. 5993 */ 5994 public boolean performMenuItemAction(MenuItem item) { 5995 return fireIntent(item.getIntent()); 5996 } 5997 5998 /** 5999 * Initializes and caches "PROCESS_TEXT" accessibility actions. 6000 */ 6001 public void initializeAccessibilityActions() { 6002 mAccessibilityIntents.clear(); 6003 mAccessibilityActions.clear(); 6004 int i = 0; 6005 for (ResolveInfo resolveInfo : getSupportedActivities()) { 6006 int actionId = TextView.ACCESSIBILITY_ACTION_PROCESS_TEXT_START_ID + i++; 6007 mAccessibilityActions.put( 6008 actionId, 6009 new AccessibilityNodeInfo.AccessibilityAction( 6010 actionId, getLabel(resolveInfo))); 6011 mAccessibilityIntents.put( 6012 actionId, createProcessTextIntentForResolveInfo(resolveInfo)); 6013 } 6014 } 6015 6016 /** 6017 * Adds "PROCESS_TEXT" accessibility actions to the specified accessibility node info. 6018 * NOTE: This needs a prior call to {@link #initializeAccessibilityActions()} to make the 6019 * latest accessibility actions available for this call. 6020 */ 6021 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo nodeInfo) { 6022 for (int i = 0; i < mAccessibilityActions.size(); i++) { 6023 nodeInfo.addAction(mAccessibilityActions.valueAt(i)); 6024 } 6025 } 6026 6027 /** 6028 * Performs a "PROCESS_TEXT" action if there is one associated with the specified 6029 * accessibility action id. 6030 * 6031 * @return True if the action was performed, false otherwise. 6032 */ 6033 public boolean performAccessibilityAction(int actionId) { 6034 return fireIntent(mAccessibilityIntents.get(actionId)); 6035 } 6036 6037 private boolean fireIntent(Intent intent) { 6038 if (intent != null && Intent.ACTION_PROCESS_TEXT.equals(intent.getAction())) { 6039 intent.putExtra(Intent.EXTRA_PROCESS_TEXT, mTextView.getSelectedText()); 6040 mEditor.mPreserveDetachedSelection = true; 6041 mTextView.startActivityForResult(intent, TextView.PROCESS_TEXT_REQUEST_CODE); 6042 return true; 6043 } 6044 return false; 6045 } 6046 6047 private List<ResolveInfo> getSupportedActivities() { 6048 PackageManager packageManager = mTextView.getContext().getPackageManager(); 6049 return packageManager.queryIntentActivities(createProcessTextIntent(), 0); 6050 } 6051 6052 private Intent createProcessTextIntentForResolveInfo(ResolveInfo info) { 6053 return createProcessTextIntent() 6054 .putExtra(Intent.EXTRA_PROCESS_TEXT_READONLY, !mTextView.isTextEditable()) 6055 .setClassName(info.activityInfo.packageName, info.activityInfo.name); 6056 } 6057 6058 private Intent createProcessTextIntent() { 6059 return new Intent() 6060 .setAction(Intent.ACTION_PROCESS_TEXT) 6061 .setType("text/plain"); 6062 } 6063 6064 private CharSequence getLabel(ResolveInfo resolveInfo) { 6065 return resolveInfo.loadLabel(mPackageManager); 6066 } 6067 } 6068} 6069