Editor.java revision 531d8d2faee92f8ea173440b74761bd91add2dd8
1/* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.widget; 18 19import android.R; 20import android.annotation.IntDef; 21import android.annotation.NonNull; 22import android.annotation.Nullable; 23import android.app.PendingIntent; 24import android.app.PendingIntent.CanceledException; 25import android.content.ClipData; 26import android.content.ClipData.Item; 27import android.content.Context; 28import android.content.Intent; 29import android.content.UndoManager; 30import android.content.UndoOperation; 31import android.content.UndoOwner; 32import android.content.pm.PackageManager; 33import android.content.pm.ResolveInfo; 34import android.content.res.TypedArray; 35import android.graphics.Canvas; 36import android.graphics.Color; 37import android.graphics.Matrix; 38import android.graphics.Paint; 39import android.graphics.Path; 40import android.graphics.Rect; 41import android.graphics.RectF; 42import android.graphics.drawable.ColorDrawable; 43import android.graphics.drawable.Drawable; 44import android.os.Bundle; 45import android.os.Parcel; 46import android.os.Parcelable; 47import android.os.ParcelableParcel; 48import android.os.SystemClock; 49import android.provider.Settings; 50import android.text.DynamicLayout; 51import android.text.Editable; 52import android.text.InputFilter; 53import android.text.InputType; 54import android.text.Layout; 55import android.text.ParcelableSpan; 56import android.text.Selection; 57import android.text.SpanWatcher; 58import android.text.Spannable; 59import android.text.SpannableStringBuilder; 60import android.text.Spanned; 61import android.text.StaticLayout; 62import android.text.TextUtils; 63import android.text.method.KeyListener; 64import android.text.method.MetaKeyKeyListener; 65import android.text.method.MovementMethod; 66import android.text.method.WordIterator; 67import android.text.style.EasyEditSpan; 68import android.text.style.SuggestionRangeSpan; 69import android.text.style.SuggestionSpan; 70import android.text.style.TextAppearanceSpan; 71import android.text.style.URLSpan; 72import android.util.DisplayMetrics; 73import android.util.LocaleList; 74import android.util.Log; 75import android.util.SparseArray; 76import android.view.ActionMode; 77import android.view.ActionMode.Callback; 78import android.view.ContextMenu; 79import android.view.DisplayListCanvas; 80import android.view.DragEvent; 81import android.view.DropPermissions; 82import android.view.Gravity; 83import android.view.InputDevice; 84import android.view.LayoutInflater; 85import android.view.Menu; 86import android.view.MenuItem; 87import android.view.MotionEvent; 88import android.view.RenderNode; 89import android.view.SubMenu; 90import android.view.View; 91import android.view.View.DragShadowBuilder; 92import android.view.View.OnClickListener; 93import android.view.ViewConfiguration; 94import android.view.ViewGroup; 95import android.view.ViewGroup.LayoutParams; 96import android.view.ViewParent; 97import android.view.ViewTreeObserver; 98import android.view.WindowManager; 99import android.view.accessibility.AccessibilityNodeInfo; 100import android.view.inputmethod.CorrectionInfo; 101import android.view.inputmethod.CursorAnchorInfo; 102import android.view.inputmethod.EditorInfo; 103import android.view.inputmethod.ExtractedText; 104import android.view.inputmethod.ExtractedTextRequest; 105import android.view.inputmethod.InputConnection; 106import android.view.inputmethod.InputMethodManager; 107import android.widget.AdapterView.OnItemClickListener; 108import android.widget.TextView.Drawables; 109import android.widget.TextView.OnEditorActionListener; 110 111import com.android.internal.annotations.VisibleForTesting; 112import com.android.internal.util.ArrayUtils; 113import com.android.internal.util.GrowingArrayUtils; 114import com.android.internal.util.Preconditions; 115import com.android.internal.widget.EditableInputConnection; 116 117import java.lang.annotation.Retention; 118import java.lang.annotation.RetentionPolicy; 119import java.text.BreakIterator; 120import java.util.Arrays; 121import java.util.Comparator; 122import java.util.HashMap; 123import java.util.List; 124 125 126/** 127 * Helper class used by TextView to handle editable text views. 128 * 129 * @hide 130 */ 131public class Editor { 132 private static final String TAG = "Editor"; 133 private static final boolean DEBUG_UNDO = false; 134 135 static final int BLINK = 500; 136 private static final float[] TEMP_POSITION = new float[2]; 137 private static int DRAG_SHADOW_MAX_TEXT_LENGTH = 20; 138 private static final float LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS = 0.5f; 139 private static final int UNSET_X_VALUE = -1; 140 private static final int UNSET_LINE = -1; 141 // Tag used when the Editor maintains its own separate UndoManager. 142 private static final String UNDO_OWNER_TAG = "Editor"; 143 144 // Ordering constants used to place the Action Mode or context menu items in their menu. 145 private static final int MENU_ITEM_ORDER_UNDO = 1; 146 private static final int MENU_ITEM_ORDER_REDO = 2; 147 private static final int MENU_ITEM_ORDER_CUT = 3; 148 private static final int MENU_ITEM_ORDER_COPY = 4; 149 private static final int MENU_ITEM_ORDER_PASTE = 5; 150 private static final int MENU_ITEM_ORDER_PASTE_AS_PLAIN_TEXT = 6; 151 private static final int MENU_ITEM_ORDER_SHARE = 7; 152 private static final int MENU_ITEM_ORDER_SELECT_ALL = 8; 153 private static final int MENU_ITEM_ORDER_REPLACE = 9; 154 private static final int MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START = 10; 155 156 // Each Editor manages its own undo stack. 157 private final UndoManager mUndoManager = new UndoManager(); 158 private UndoOwner mUndoOwner = mUndoManager.getOwner(UNDO_OWNER_TAG, this); 159 final UndoInputFilter mUndoInputFilter = new UndoInputFilter(this); 160 boolean mAllowUndo = true; 161 162 // Cursor Controllers. 163 InsertionPointCursorController mInsertionPointCursorController; 164 SelectionModifierCursorController mSelectionModifierCursorController; 165 // Action mode used when text is selected or when actions on an insertion cursor are triggered. 166 ActionMode mTextActionMode; 167 boolean mInsertionControllerEnabled; 168 boolean mSelectionControllerEnabled; 169 170 // Used to highlight a word when it is corrected by the IME 171 CorrectionHighlighter mCorrectionHighlighter; 172 173 InputContentType mInputContentType; 174 InputMethodState mInputMethodState; 175 176 private static class TextRenderNode { 177 RenderNode renderNode; 178 boolean isDirty; 179 public TextRenderNode(String name) { 180 isDirty = true; 181 renderNode = RenderNode.create(name, null); 182 } 183 boolean needsRecord() { return isDirty || !renderNode.isValid(); } 184 } 185 TextRenderNode[] mTextRenderNodes; 186 187 boolean mFrozenWithFocus; 188 boolean mSelectionMoved; 189 boolean mTouchFocusSelected; 190 191 KeyListener mKeyListener; 192 int mInputType = EditorInfo.TYPE_NULL; 193 194 boolean mDiscardNextActionUp; 195 boolean mIgnoreActionUpEvent; 196 private boolean mIgnoreNextMouseActionUpOrDown; 197 198 long mShowCursor; 199 Blink mBlink; 200 201 boolean mCursorVisible = true; 202 boolean mSelectAllOnFocus; 203 boolean mTextIsSelectable; 204 205 CharSequence mError; 206 boolean mErrorWasChanged; 207 ErrorPopup mErrorPopup; 208 209 /** 210 * This flag is set if the TextView tries to display an error before it 211 * is attached to the window (so its position is still unknown). 212 * It causes the error to be shown later, when onAttachedToWindow() 213 * is called. 214 */ 215 boolean mShowErrorAfterAttach; 216 217 boolean mInBatchEditControllers; 218 boolean mShowSoftInputOnFocus = true; 219 private boolean mPreserveSelection; 220 private boolean mRestartActionModeOnNextRefresh; 221 boolean mTemporaryDetach; 222 223 boolean mIsBeingLongClicked; 224 225 SuggestionsPopupWindow mSuggestionsPopupWindow; 226 SuggestionRangeSpan mSuggestionRangeSpan; 227 Runnable mShowSuggestionRunnable; 228 229 final Drawable[] mCursorDrawable = new Drawable[2]; 230 int mCursorCount; // Current number of used mCursorDrawable: 0 (resource=0), 1 or 2 (split) 231 232 private Drawable mSelectHandleLeft; 233 private Drawable mSelectHandleRight; 234 private Drawable mSelectHandleCenter; 235 236 // Global listener that detects changes in the global position of the TextView 237 private PositionListener mPositionListener; 238 239 float mLastDownPositionX, mLastDownPositionY; 240 private float mContextMenuAnchorX, mContextMenuAnchorY; 241 Callback mCustomSelectionActionModeCallback; 242 Callback mCustomInsertionActionModeCallback; 243 244 // Set when this TextView gained focus with some text selected. Will start selection mode. 245 boolean mCreatedWithASelection; 246 247 // Indicates the current tap state (first tap, double tap, or triple click). 248 private int mTapState = TAP_STATE_INITIAL; 249 private long mLastTouchUpTime = 0; 250 private static final int TAP_STATE_INITIAL = 0; 251 private static final int TAP_STATE_FIRST_TAP = 1; 252 private static final int TAP_STATE_DOUBLE_TAP = 2; 253 // Only for mouse input. 254 private static final int TAP_STATE_TRIPLE_CLICK = 3; 255 256 // The button state as of the last time #onTouchEvent is called. 257 private int mLastButtonState; 258 259 private Runnable mInsertionActionModeRunnable; 260 261 // The span controller helps monitoring the changes to which the Editor needs to react: 262 // - EasyEditSpans, for which we have some UI to display on attach and on hide 263 // - SelectionSpans, for which we need to call updateSelection if an IME is attached 264 private SpanController mSpanController; 265 266 WordIterator mWordIterator; 267 SpellChecker mSpellChecker; 268 269 // This word iterator is set with text and used to determine word boundaries 270 // when a user is selecting text. 271 private WordIterator mWordIteratorWithText; 272 // Indicate that the text in the word iterator needs to be updated. 273 private boolean mUpdateWordIteratorText; 274 275 private Rect mTempRect; 276 277 private TextView mTextView; 278 279 final ProcessTextIntentActionsHandler mProcessTextIntentActionsHandler; 280 281 final CursorAnchorInfoNotifier mCursorAnchorInfoNotifier = new CursorAnchorInfoNotifier(); 282 283 private final Runnable mShowFloatingToolbar = new Runnable() { 284 @Override 285 public void run() { 286 if (mTextActionMode != null) { 287 mTextActionMode.hide(0); // hide off. 288 } 289 } 290 }; 291 292 boolean mIsInsertionActionModeStartPending = false; 293 294 private final SuggestionHelper mSuggestionHelper = new SuggestionHelper(); 295 296 Editor(TextView textView) { 297 mTextView = textView; 298 // Synchronize the filter list, which places the undo input filter at the end. 299 mTextView.setFilters(mTextView.getFilters()); 300 mProcessTextIntentActionsHandler = new ProcessTextIntentActionsHandler(this); 301 } 302 303 ParcelableParcel saveInstanceState() { 304 ParcelableParcel state = new ParcelableParcel(getClass().getClassLoader()); 305 Parcel parcel = state.getParcel(); 306 mUndoManager.saveInstanceState(parcel); 307 mUndoInputFilter.saveInstanceState(parcel); 308 return state; 309 } 310 311 void restoreInstanceState(ParcelableParcel state) { 312 Parcel parcel = state.getParcel(); 313 mUndoManager.restoreInstanceState(parcel, state.getClassLoader()); 314 mUndoInputFilter.restoreInstanceState(parcel); 315 // Re-associate this object as the owner of undo state. 316 mUndoOwner = mUndoManager.getOwner(UNDO_OWNER_TAG, this); 317 } 318 319 /** 320 * Forgets all undo and redo operations for this Editor. 321 */ 322 void forgetUndoRedo() { 323 UndoOwner[] owners = { mUndoOwner }; 324 mUndoManager.forgetUndos(owners, -1 /* all */); 325 mUndoManager.forgetRedos(owners, -1 /* all */); 326 } 327 328 boolean canUndo() { 329 UndoOwner[] owners = { mUndoOwner }; 330 return mAllowUndo && mUndoManager.countUndos(owners) > 0; 331 } 332 333 boolean canRedo() { 334 UndoOwner[] owners = { mUndoOwner }; 335 return mAllowUndo && mUndoManager.countRedos(owners) > 0; 336 } 337 338 void undo() { 339 if (!mAllowUndo) { 340 return; 341 } 342 UndoOwner[] owners = { mUndoOwner }; 343 mUndoManager.undo(owners, 1); // Undo 1 action. 344 } 345 346 void redo() { 347 if (!mAllowUndo) { 348 return; 349 } 350 UndoOwner[] owners = { mUndoOwner }; 351 mUndoManager.redo(owners, 1); // Redo 1 action. 352 } 353 354 void replace() { 355 if (mSuggestionsPopupWindow == null) { 356 mSuggestionsPopupWindow = new SuggestionsPopupWindow(); 357 } 358 hideCursorAndSpanControllers(); 359 mSuggestionsPopupWindow.show(); 360 361 int middle = (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 362 Selection.setSelection((Spannable) mTextView.getText(), middle); 363 } 364 365 void onAttachedToWindow() { 366 if (mShowErrorAfterAttach) { 367 showError(); 368 mShowErrorAfterAttach = false; 369 } 370 mTemporaryDetach = false; 371 372 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 373 // No need to create the controller. 374 // The get method will add the listener on controller creation. 375 if (mInsertionPointCursorController != null) { 376 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 377 } 378 if (mSelectionModifierCursorController != null) { 379 mSelectionModifierCursorController.resetTouchOffsets(); 380 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 381 } 382 updateSpellCheckSpans(0, mTextView.getText().length(), 383 true /* create the spell checker if needed */); 384 385 if (mTextView.hasSelection()) { 386 refreshTextActionMode(); 387 } 388 389 getPositionListener().addSubscriber(mCursorAnchorInfoNotifier, true); 390 resumeBlink(); 391 } 392 393 void onDetachedFromWindow() { 394 getPositionListener().removeSubscriber(mCursorAnchorInfoNotifier); 395 396 if (mError != null) { 397 hideError(); 398 } 399 400 suspendBlink(); 401 402 if (mInsertionPointCursorController != null) { 403 mInsertionPointCursorController.onDetached(); 404 } 405 406 if (mSelectionModifierCursorController != null) { 407 mSelectionModifierCursorController.onDetached(); 408 } 409 410 if (mShowSuggestionRunnable != null) { 411 mTextView.removeCallbacks(mShowSuggestionRunnable); 412 } 413 414 // Cancel the single tap delayed runnable. 415 if (mInsertionActionModeRunnable != null) { 416 mTextView.removeCallbacks(mInsertionActionModeRunnable); 417 } 418 419 mTextView.removeCallbacks(mShowFloatingToolbar); 420 421 discardTextDisplayLists(); 422 423 if (mSpellChecker != null) { 424 mSpellChecker.closeSession(); 425 // Forces the creation of a new SpellChecker next time this window is created. 426 // Will handle the cases where the settings has been changed in the meantime. 427 mSpellChecker = null; 428 } 429 430 hideCursorAndSpanControllers(); 431 stopTextActionModeWithPreservingSelection(); 432 mTemporaryDetach = false; 433 } 434 435 private void discardTextDisplayLists() { 436 if (mTextRenderNodes != null) { 437 for (int i = 0; i < mTextRenderNodes.length; i++) { 438 RenderNode displayList = mTextRenderNodes[i] != null 439 ? mTextRenderNodes[i].renderNode : null; 440 if (displayList != null && displayList.isValid()) { 441 displayList.discardDisplayList(); 442 } 443 } 444 } 445 } 446 447 private void showError() { 448 if (mTextView.getWindowToken() == null) { 449 mShowErrorAfterAttach = true; 450 return; 451 } 452 453 if (mErrorPopup == null) { 454 LayoutInflater inflater = LayoutInflater.from(mTextView.getContext()); 455 final TextView err = (TextView) inflater.inflate( 456 com.android.internal.R.layout.textview_hint, null); 457 458 final float scale = mTextView.getResources().getDisplayMetrics().density; 459 mErrorPopup = new ErrorPopup(err, (int)(200 * scale + 0.5f), (int)(50 * scale + 0.5f)); 460 mErrorPopup.setFocusable(false); 461 // The user is entering text, so the input method is needed. We 462 // don't want the popup to be displayed on top of it. 463 mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); 464 } 465 466 TextView tv = (TextView) mErrorPopup.getContentView(); 467 chooseSize(mErrorPopup, mError, tv); 468 tv.setText(mError); 469 470 mErrorPopup.showAsDropDown(mTextView, getErrorX(), getErrorY()); 471 mErrorPopup.fixDirection(mErrorPopup.isAboveAnchor()); 472 } 473 474 public void setError(CharSequence error, Drawable icon) { 475 mError = TextUtils.stringOrSpannedString(error); 476 mErrorWasChanged = true; 477 478 if (mError == null) { 479 setErrorIcon(null); 480 if (mErrorPopup != null) { 481 if (mErrorPopup.isShowing()) { 482 mErrorPopup.dismiss(); 483 } 484 485 mErrorPopup = null; 486 } 487 mShowErrorAfterAttach = false; 488 } else { 489 setErrorIcon(icon); 490 if (mTextView.isFocused()) { 491 showError(); 492 } 493 } 494 } 495 496 private void setErrorIcon(Drawable icon) { 497 Drawables dr = mTextView.mDrawables; 498 if (dr == null) { 499 mTextView.mDrawables = dr = new Drawables(mTextView.getContext()); 500 } 501 dr.setErrorDrawable(icon, mTextView); 502 503 mTextView.resetResolvedDrawables(); 504 mTextView.invalidate(); 505 mTextView.requestLayout(); 506 } 507 508 private void hideError() { 509 if (mErrorPopup != null) { 510 if (mErrorPopup.isShowing()) { 511 mErrorPopup.dismiss(); 512 } 513 } 514 515 mShowErrorAfterAttach = false; 516 } 517 518 /** 519 * Returns the X offset to make the pointy top of the error point 520 * at the middle of the error icon. 521 */ 522 private int getErrorX() { 523 /* 524 * The "25" is the distance between the point and the right edge 525 * of the background 526 */ 527 final float scale = mTextView.getResources().getDisplayMetrics().density; 528 529 final Drawables dr = mTextView.mDrawables; 530 531 final int layoutDirection = mTextView.getLayoutDirection(); 532 int errorX; 533 int offset; 534 switch (layoutDirection) { 535 default: 536 case View.LAYOUT_DIRECTION_LTR: 537 offset = - (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f); 538 errorX = mTextView.getWidth() - mErrorPopup.getWidth() - 539 mTextView.getPaddingRight() + offset; 540 break; 541 case View.LAYOUT_DIRECTION_RTL: 542 offset = (dr != null ? dr.mDrawableSizeLeft : 0) / 2 - (int) (25 * scale + 0.5f); 543 errorX = mTextView.getPaddingLeft() + offset; 544 break; 545 } 546 return errorX; 547 } 548 549 /** 550 * Returns the Y offset to make the pointy top of the error point 551 * at the bottom of the error icon. 552 */ 553 private int getErrorY() { 554 /* 555 * Compound, not extended, because the icon is not clipped 556 * if the text height is smaller. 557 */ 558 final int compoundPaddingTop = mTextView.getCompoundPaddingTop(); 559 int vspace = mTextView.getBottom() - mTextView.getTop() - 560 mTextView.getCompoundPaddingBottom() - compoundPaddingTop; 561 562 final Drawables dr = mTextView.mDrawables; 563 564 final int layoutDirection = mTextView.getLayoutDirection(); 565 int height; 566 switch (layoutDirection) { 567 default: 568 case View.LAYOUT_DIRECTION_LTR: 569 height = (dr != null ? dr.mDrawableHeightRight : 0); 570 break; 571 case View.LAYOUT_DIRECTION_RTL: 572 height = (dr != null ? dr.mDrawableHeightLeft : 0); 573 break; 574 } 575 576 int icontop = compoundPaddingTop + (vspace - height) / 2; 577 578 /* 579 * The "2" is the distance between the point and the top edge 580 * of the background. 581 */ 582 final float scale = mTextView.getResources().getDisplayMetrics().density; 583 return icontop + height - mTextView.getHeight() - (int) (2 * scale + 0.5f); 584 } 585 586 void createInputContentTypeIfNeeded() { 587 if (mInputContentType == null) { 588 mInputContentType = new InputContentType(); 589 } 590 } 591 592 void createInputMethodStateIfNeeded() { 593 if (mInputMethodState == null) { 594 mInputMethodState = new InputMethodState(); 595 } 596 } 597 598 boolean isCursorVisible() { 599 // The default value is true, even when there is no associated Editor 600 return mCursorVisible && mTextView.isTextEditable(); 601 } 602 603 void prepareCursorControllers() { 604 boolean windowSupportsHandles = false; 605 606 ViewGroup.LayoutParams params = mTextView.getRootView().getLayoutParams(); 607 if (params instanceof WindowManager.LayoutParams) { 608 WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params; 609 windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW 610 || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW; 611 } 612 613 boolean enabled = windowSupportsHandles && mTextView.getLayout() != null; 614 mInsertionControllerEnabled = enabled && isCursorVisible(); 615 mSelectionControllerEnabled = enabled && mTextView.textCanBeSelected(); 616 617 if (!mInsertionControllerEnabled) { 618 hideInsertionPointCursorController(); 619 if (mInsertionPointCursorController != null) { 620 mInsertionPointCursorController.onDetached(); 621 mInsertionPointCursorController = null; 622 } 623 } 624 625 if (!mSelectionControllerEnabled) { 626 stopTextActionMode(); 627 if (mSelectionModifierCursorController != null) { 628 mSelectionModifierCursorController.onDetached(); 629 mSelectionModifierCursorController = null; 630 } 631 } 632 } 633 634 void hideInsertionPointCursorController() { 635 if (mInsertionPointCursorController != null) { 636 mInsertionPointCursorController.hide(); 637 } 638 } 639 640 /** 641 * Hides the insertion and span controllers. 642 */ 643 void hideCursorAndSpanControllers() { 644 hideCursorControllers(); 645 hideSpanControllers(); 646 } 647 648 private void hideSpanControllers() { 649 if (mSpanController != null) { 650 mSpanController.hide(); 651 } 652 } 653 654 private void hideCursorControllers() { 655 // When mTextView is not ExtractEditText, we need to distinguish two kinds of focus-lost. 656 // One is the true focus lost where suggestions pop-up (if any) should be dismissed, and the 657 // other is an side effect of showing the suggestions pop-up itself. We use isShowingUp() 658 // to distinguish one from the other. 659 if (mSuggestionsPopupWindow != null && ((mTextView.isInExtractedMode()) || 660 !mSuggestionsPopupWindow.isShowingUp())) { 661 // Should be done before hide insertion point controller since it triggers a show of it 662 mSuggestionsPopupWindow.hide(); 663 } 664 hideInsertionPointCursorController(); 665 } 666 667 /** 668 * Create new SpellCheckSpans on the modified region. 669 */ 670 private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) { 671 // Remove spans whose adjacent characters are text not punctuation 672 mTextView.removeAdjacentSuggestionSpans(start); 673 mTextView.removeAdjacentSuggestionSpans(end); 674 675 if (mTextView.isTextEditable() && mTextView.isSuggestionsEnabled() && 676 !(mTextView.isInExtractedMode())) { 677 if (mSpellChecker == null && createSpellChecker) { 678 mSpellChecker = new SpellChecker(mTextView); 679 } 680 if (mSpellChecker != null) { 681 mSpellChecker.spellCheck(start, end); 682 } 683 } 684 } 685 686 void onScreenStateChanged(int screenState) { 687 switch (screenState) { 688 case View.SCREEN_STATE_ON: 689 resumeBlink(); 690 break; 691 case View.SCREEN_STATE_OFF: 692 suspendBlink(); 693 break; 694 } 695 } 696 697 private void suspendBlink() { 698 if (mBlink != null) { 699 mBlink.cancel(); 700 } 701 } 702 703 private void resumeBlink() { 704 if (mBlink != null) { 705 mBlink.uncancel(); 706 makeBlink(); 707 } 708 } 709 710 void adjustInputType(boolean password, boolean passwordInputType, 711 boolean webPasswordInputType, boolean numberPasswordInputType) { 712 // mInputType has been set from inputType, possibly modified by mInputMethod. 713 // Specialize mInputType to [web]password if we have a text class and the original input 714 // type was a password. 715 if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 716 if (password || passwordInputType) { 717 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 718 | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD; 719 } 720 if (webPasswordInputType) { 721 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 722 | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 723 } 724 } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) { 725 if (numberPasswordInputType) { 726 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 727 | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD; 728 } 729 } 730 } 731 732 private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) { 733 int wid = tv.getPaddingLeft() + tv.getPaddingRight(); 734 int ht = tv.getPaddingTop() + tv.getPaddingBottom(); 735 736 int defaultWidthInPixels = mTextView.getResources().getDimensionPixelSize( 737 com.android.internal.R.dimen.textview_error_popup_default_width); 738 Layout l = new StaticLayout(text, tv.getPaint(), defaultWidthInPixels, 739 Layout.Alignment.ALIGN_NORMAL, 1, 0, true); 740 float max = 0; 741 for (int i = 0; i < l.getLineCount(); i++) { 742 max = Math.max(max, l.getLineWidth(i)); 743 } 744 745 /* 746 * Now set the popup size to be big enough for the text plus the border capped 747 * to DEFAULT_MAX_POPUP_WIDTH 748 */ 749 pop.setWidth(wid + (int) Math.ceil(max)); 750 pop.setHeight(ht + l.getHeight()); 751 } 752 753 void setFrame() { 754 if (mErrorPopup != null) { 755 TextView tv = (TextView) mErrorPopup.getContentView(); 756 chooseSize(mErrorPopup, mError, tv); 757 mErrorPopup.update(mTextView, getErrorX(), getErrorY(), 758 mErrorPopup.getWidth(), mErrorPopup.getHeight()); 759 } 760 } 761 762 private int getWordStart(int offset) { 763 // FIXME - For this and similar methods we're not doing anything to check if there's 764 // a LocaleSpan in the text, this may be something we should try handling or checking for. 765 int retOffset = getWordIteratorWithText().prevBoundary(offset); 766 if (getWordIteratorWithText().isOnPunctuation(retOffset)) { 767 // On punctuation boundary or within group of punctuation, find punctuation start. 768 retOffset = getWordIteratorWithText().getPunctuationBeginning(offset); 769 } else { 770 // Not on a punctuation boundary, find the word start. 771 retOffset = getWordIteratorWithText().getPrevWordBeginningOnTwoWordsBoundary(offset); 772 } 773 if (retOffset == BreakIterator.DONE) { 774 return offset; 775 } 776 return retOffset; 777 } 778 779 private int getWordEnd(int offset) { 780 int retOffset = getWordIteratorWithText().nextBoundary(offset); 781 if (getWordIteratorWithText().isAfterPunctuation(retOffset)) { 782 // On punctuation boundary or within group of punctuation, find punctuation end. 783 retOffset = getWordIteratorWithText().getPunctuationEnd(offset); 784 } else { 785 // Not on a punctuation boundary, find the word end. 786 retOffset = getWordIteratorWithText().getNextWordEndOnTwoWordBoundary(offset); 787 } 788 if (retOffset == BreakIterator.DONE) { 789 return offset; 790 } 791 return retOffset; 792 } 793 794 private boolean needsToSelectAllToSelectWordOrParagraph() { 795 if (mTextView.hasPasswordTransformationMethod()) { 796 // Always select all on a password field. 797 // Cut/copy menu entries are not available for passwords, but being able to select all 798 // is however useful to delete or paste to replace the entire content. 799 return true; 800 } 801 802 int inputType = mTextView.getInputType(); 803 int klass = inputType & InputType.TYPE_MASK_CLASS; 804 int variation = inputType & InputType.TYPE_MASK_VARIATION; 805 806 // Specific text field types: select the entire text for these 807 if (klass == InputType.TYPE_CLASS_NUMBER || 808 klass == InputType.TYPE_CLASS_PHONE || 809 klass == InputType.TYPE_CLASS_DATETIME || 810 variation == InputType.TYPE_TEXT_VARIATION_URI || 811 variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS || 812 variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS || 813 variation == InputType.TYPE_TEXT_VARIATION_FILTER) { 814 return true; 815 } 816 return false; 817 } 818 819 /** 820 * Adjusts selection to the word under last touch offset. Return true if the operation was 821 * successfully performed. 822 */ 823 private boolean selectCurrentWord() { 824 if (!mTextView.canSelectText()) { 825 return false; 826 } 827 828 if (needsToSelectAllToSelectWordOrParagraph()) { 829 return mTextView.selectAllText(); 830 } 831 832 long lastTouchOffsets = getLastTouchOffsets(); 833 final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 834 final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 835 836 // Safety check in case standard touch event handling has been bypassed 837 if (minOffset < 0 || minOffset > mTextView.getText().length()) return false; 838 if (maxOffset < 0 || maxOffset > mTextView.getText().length()) return false; 839 840 int selectionStart, selectionEnd; 841 842 // If a URLSpan (web address, email, phone...) is found at that position, select it. 843 URLSpan[] urlSpans = ((Spanned) mTextView.getText()). 844 getSpans(minOffset, maxOffset, URLSpan.class); 845 if (urlSpans.length >= 1) { 846 URLSpan urlSpan = urlSpans[0]; 847 selectionStart = ((Spanned) mTextView.getText()).getSpanStart(urlSpan); 848 selectionEnd = ((Spanned) mTextView.getText()).getSpanEnd(urlSpan); 849 } else { 850 // FIXME - We should check if there's a LocaleSpan in the text, this may be 851 // something we should try handling or checking for. 852 final WordIterator wordIterator = getWordIterator(); 853 wordIterator.setCharSequence(mTextView.getText(), minOffset, maxOffset); 854 855 selectionStart = wordIterator.getBeginning(minOffset); 856 selectionEnd = wordIterator.getEnd(maxOffset); 857 858 if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE || 859 selectionStart == selectionEnd) { 860 // Possible when the word iterator does not properly handle the text's language 861 long range = getCharClusterRange(minOffset); 862 selectionStart = TextUtils.unpackRangeStartFromLong(range); 863 selectionEnd = TextUtils.unpackRangeEndFromLong(range); 864 } 865 } 866 867 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 868 return selectionEnd > selectionStart; 869 } 870 871 /** 872 * Adjusts selection to the paragraph under last touch offset. Return true if the operation was 873 * successfully performed. 874 */ 875 private boolean selectCurrentParagraph() { 876 if (!mTextView.canSelectText()) { 877 return false; 878 } 879 880 if (needsToSelectAllToSelectWordOrParagraph()) { 881 return mTextView.selectAllText(); 882 } 883 884 long lastTouchOffsets = getLastTouchOffsets(); 885 final int minLastTouchOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 886 final int maxLastTouchOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 887 888 final long paragraphsRange = getParagraphsRange(minLastTouchOffset, maxLastTouchOffset); 889 final int start = TextUtils.unpackRangeStartFromLong(paragraphsRange); 890 final int end = TextUtils.unpackRangeEndFromLong(paragraphsRange); 891 if (start < end) { 892 Selection.setSelection((Spannable) mTextView.getText(), start, end); 893 return true; 894 } 895 return false; 896 } 897 898 /** 899 * Get the minimum range of paragraphs that contains startOffset and endOffset. 900 */ 901 private long getParagraphsRange(int startOffset, int endOffset) { 902 final Layout layout = mTextView.getLayout(); 903 if (layout == null) { 904 return TextUtils.packRangeInLong(-1, -1); 905 } 906 final CharSequence text = mTextView.getText(); 907 int minLine = layout.getLineForOffset(startOffset); 908 // Search paragraph start. 909 while (minLine > 0) { 910 final int prevLineEndOffset = layout.getLineEnd(minLine - 1); 911 if (text.charAt(prevLineEndOffset - 1) == '\n') { 912 break; 913 } 914 minLine--; 915 } 916 int maxLine = layout.getLineForOffset(endOffset); 917 // Search paragraph end. 918 while (maxLine < layout.getLineCount() - 1) { 919 final int lineEndOffset = layout.getLineEnd(maxLine); 920 if (text.charAt(lineEndOffset - 1) == '\n') { 921 break; 922 } 923 maxLine++; 924 } 925 return TextUtils.packRangeInLong(layout.getLineStart(minLine), layout.getLineEnd(maxLine)); 926 } 927 928 void onLocaleChanged() { 929 // Will be re-created on demand in getWordIterator and getWordIteratorWithText with the 930 // proper new locale 931 mWordIterator = null; 932 mWordIteratorWithText = null; 933 } 934 935 /** 936 * @hide 937 */ 938 public WordIterator getWordIterator() { 939 if (mWordIterator == null) { 940 mWordIterator = new WordIterator(mTextView.getTextServicesLocale()); 941 } 942 return mWordIterator; 943 } 944 945 private WordIterator getWordIteratorWithText() { 946 if (mWordIteratorWithText == null) { 947 mWordIteratorWithText = new WordIterator(mTextView.getTextServicesLocale()); 948 mUpdateWordIteratorText = true; 949 } 950 if (mUpdateWordIteratorText) { 951 // FIXME - Shouldn't copy all of the text as only the area of the text relevant 952 // to the user's selection is needed. A possible solution would be to 953 // copy some number N of characters near the selection and then when the 954 // user approaches N then we'd do another copy of the next N characters. 955 CharSequence text = mTextView.getText(); 956 mWordIteratorWithText.setCharSequence(text, 0, text.length()); 957 mUpdateWordIteratorText = false; 958 } 959 return mWordIteratorWithText; 960 } 961 962 private int getNextCursorOffset(int offset, boolean findAfterGivenOffset) { 963 final Layout layout = mTextView.getLayout(); 964 if (layout == null) return offset; 965 return findAfterGivenOffset == layout.isRtlCharAt(offset) ? 966 layout.getOffsetToLeftOf(offset) : layout.getOffsetToRightOf(offset); 967 } 968 969 private long getCharClusterRange(int offset) { 970 final int textLength = mTextView.getText().length(); 971 if (offset < textLength) { 972 final int clusterEndOffset = getNextCursorOffset(offset, true); 973 return TextUtils.packRangeInLong( 974 getNextCursorOffset(clusterEndOffset, false), clusterEndOffset); 975 } 976 if (offset - 1 >= 0) { 977 final int clusterStartOffset = getNextCursorOffset(offset, false); 978 return TextUtils.packRangeInLong(clusterStartOffset, 979 getNextCursorOffset(clusterStartOffset, true)); 980 } 981 return TextUtils.packRangeInLong(offset, offset); 982 } 983 984 private boolean touchPositionIsInSelection() { 985 int selectionStart = mTextView.getSelectionStart(); 986 int selectionEnd = mTextView.getSelectionEnd(); 987 988 if (selectionStart == selectionEnd) { 989 return false; 990 } 991 992 if (selectionStart > selectionEnd) { 993 int tmp = selectionStart; 994 selectionStart = selectionEnd; 995 selectionEnd = tmp; 996 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 997 } 998 999 SelectionModifierCursorController selectionController = getSelectionController(); 1000 int minOffset = selectionController.getMinTouchOffset(); 1001 int maxOffset = selectionController.getMaxTouchOffset(); 1002 1003 return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); 1004 } 1005 1006 private PositionListener getPositionListener() { 1007 if (mPositionListener == null) { 1008 mPositionListener = new PositionListener(); 1009 } 1010 return mPositionListener; 1011 } 1012 1013 private interface TextViewPositionListener { 1014 public void updatePosition(int parentPositionX, int parentPositionY, 1015 boolean parentPositionChanged, boolean parentScrolled); 1016 } 1017 1018 private boolean isPositionVisible(final float positionX, final float positionY) { 1019 synchronized (TEMP_POSITION) { 1020 final float[] position = TEMP_POSITION; 1021 position[0] = positionX; 1022 position[1] = positionY; 1023 View view = mTextView; 1024 1025 while (view != null) { 1026 if (view != mTextView) { 1027 // Local scroll is already taken into account in positionX/Y 1028 position[0] -= view.getScrollX(); 1029 position[1] -= view.getScrollY(); 1030 } 1031 1032 if (position[0] < 0 || position[1] < 0 || 1033 position[0] > view.getWidth() || position[1] > view.getHeight()) { 1034 return false; 1035 } 1036 1037 if (!view.getMatrix().isIdentity()) { 1038 view.getMatrix().mapPoints(position); 1039 } 1040 1041 position[0] += view.getLeft(); 1042 position[1] += view.getTop(); 1043 1044 final ViewParent parent = view.getParent(); 1045 if (parent instanceof View) { 1046 view = (View) parent; 1047 } else { 1048 // We've reached the ViewRoot, stop iterating 1049 view = null; 1050 } 1051 } 1052 } 1053 1054 // We've been able to walk up the view hierarchy and the position was never clipped 1055 return true; 1056 } 1057 1058 private boolean isOffsetVisible(int offset) { 1059 Layout layout = mTextView.getLayout(); 1060 if (layout == null) return false; 1061 1062 final int line = layout.getLineForOffset(offset); 1063 final int lineBottom = layout.getLineBottom(line); 1064 final int primaryHorizontal = (int) layout.getPrimaryHorizontal(offset); 1065 return isPositionVisible(primaryHorizontal + mTextView.viewportToContentHorizontalOffset(), 1066 lineBottom + mTextView.viewportToContentVerticalOffset()); 1067 } 1068 1069 /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed 1070 * in the view. Returns false when the position is in the empty space of left/right of text. 1071 */ 1072 private boolean isPositionOnText(float x, float y) { 1073 Layout layout = mTextView.getLayout(); 1074 if (layout == null) return false; 1075 1076 final int line = mTextView.getLineAtCoordinate(y); 1077 x = mTextView.convertToLocalHorizontalCoordinate(x); 1078 1079 if (x < layout.getLineLeft(line)) return false; 1080 if (x > layout.getLineRight(line)) return false; 1081 return true; 1082 } 1083 1084 private void startDragAndDrop() { 1085 // TODO: Fix drag and drop in full screen extracted mode. 1086 if (mTextView.isInExtractedMode()) { 1087 return; 1088 } 1089 final int start = mTextView.getSelectionStart(); 1090 final int end = mTextView.getSelectionEnd(); 1091 CharSequence selectedText = mTextView.getTransformedText(start, end); 1092 ClipData data = ClipData.newPlainText(null, selectedText); 1093 DragLocalState localState = new DragLocalState(mTextView, start, end); 1094 mTextView.startDragAndDrop(data, getTextThumbnailBuilder(start, end), localState, 1095 View.DRAG_FLAG_GLOBAL); 1096 stopTextActionMode(); 1097 if (hasSelectionController()) { 1098 getSelectionController().resetTouchOffsets(); 1099 } 1100 } 1101 1102 public boolean performLongClick(boolean handled) { 1103 // Long press in empty space moves cursor and starts the insertion action mode. 1104 if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) && 1105 mInsertionControllerEnabled) { 1106 final int offset = mTextView.getOffsetForPosition(mLastDownPositionX, 1107 mLastDownPositionY); 1108 Selection.setSelection((Spannable) mTextView.getText(), offset); 1109 getInsertionController().show(); 1110 mIsInsertionActionModeStartPending = true; 1111 handled = true; 1112 } 1113 1114 if (!handled && mTextActionMode != null) { 1115 if (touchPositionIsInSelection()) { 1116 startDragAndDrop(); 1117 } else { 1118 stopTextActionMode(); 1119 selectCurrentWordAndStartDrag(); 1120 } 1121 handled = true; 1122 } 1123 1124 // Start a new selection 1125 if (!handled) { 1126 handled = selectCurrentWordAndStartDrag(); 1127 } 1128 1129 return handled; 1130 } 1131 1132 private long getLastTouchOffsets() { 1133 SelectionModifierCursorController selectionController = getSelectionController(); 1134 final int minOffset = selectionController.getMinTouchOffset(); 1135 final int maxOffset = selectionController.getMaxTouchOffset(); 1136 return TextUtils.packRangeInLong(minOffset, maxOffset); 1137 } 1138 1139 void onFocusChanged(boolean focused, int direction) { 1140 mShowCursor = SystemClock.uptimeMillis(); 1141 ensureEndedBatchEdit(); 1142 1143 if (focused) { 1144 int selStart = mTextView.getSelectionStart(); 1145 int selEnd = mTextView.getSelectionEnd(); 1146 1147 // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection 1148 // mode for these, unless there was a specific selection already started. 1149 final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 && 1150 selEnd == mTextView.getText().length(); 1151 1152 mCreatedWithASelection = mFrozenWithFocus && mTextView.hasSelection() && 1153 !isFocusHighlighted; 1154 1155 if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { 1156 // If a tap was used to give focus to that view, move cursor at tap position. 1157 // Has to be done before onTakeFocus, which can be overloaded. 1158 final int lastTapPosition = getLastTapPosition(); 1159 if (lastTapPosition >= 0) { 1160 Selection.setSelection((Spannable) mTextView.getText(), lastTapPosition); 1161 } 1162 1163 // Note this may have to be moved out of the Editor class 1164 MovementMethod mMovement = mTextView.getMovementMethod(); 1165 if (mMovement != null) { 1166 mMovement.onTakeFocus(mTextView, (Spannable) mTextView.getText(), direction); 1167 } 1168 1169 // The DecorView does not have focus when the 'Done' ExtractEditText button is 1170 // pressed. Since it is the ViewAncestor's mView, it requests focus before 1171 // ExtractEditText clears focus, which gives focus to the ExtractEditText. 1172 // This special case ensure that we keep current selection in that case. 1173 // It would be better to know why the DecorView does not have focus at that time. 1174 if (((mTextView.isInExtractedMode()) || mSelectionMoved) && 1175 selStart >= 0 && selEnd >= 0) { 1176 /* 1177 * Someone intentionally set the selection, so let them 1178 * do whatever it is that they wanted to do instead of 1179 * the default on-focus behavior. We reset the selection 1180 * here instead of just skipping the onTakeFocus() call 1181 * because some movement methods do something other than 1182 * just setting the selection in theirs and we still 1183 * need to go through that path. 1184 */ 1185 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 1186 } 1187 1188 if (mSelectAllOnFocus) { 1189 mTextView.selectAllText(); 1190 } 1191 1192 mTouchFocusSelected = true; 1193 } 1194 1195 mFrozenWithFocus = false; 1196 mSelectionMoved = false; 1197 1198 if (mError != null) { 1199 showError(); 1200 } 1201 1202 makeBlink(); 1203 } else { 1204 if (mError != null) { 1205 hideError(); 1206 } 1207 // Don't leave us in the middle of a batch edit. 1208 mTextView.onEndBatchEdit(); 1209 1210 if (mTextView.isInExtractedMode()) { 1211 hideCursorAndSpanControllers(); 1212 stopTextActionModeWithPreservingSelection(); 1213 } else { 1214 hideCursorAndSpanControllers(); 1215 if (mTemporaryDetach) { 1216 stopTextActionModeWithPreservingSelection(); 1217 } else { 1218 stopTextActionMode(); 1219 } 1220 downgradeEasyCorrectionSpans(); 1221 } 1222 // No need to create the controller 1223 if (mSelectionModifierCursorController != null) { 1224 mSelectionModifierCursorController.resetTouchOffsets(); 1225 } 1226 } 1227 } 1228 1229 /** 1230 * Downgrades to simple suggestions all the easy correction spans that are not a spell check 1231 * span. 1232 */ 1233 private void downgradeEasyCorrectionSpans() { 1234 CharSequence text = mTextView.getText(); 1235 if (text instanceof Spannable) { 1236 Spannable spannable = (Spannable) text; 1237 SuggestionSpan[] suggestionSpans = spannable.getSpans(0, 1238 spannable.length(), SuggestionSpan.class); 1239 for (int i = 0; i < suggestionSpans.length; i++) { 1240 int flags = suggestionSpans[i].getFlags(); 1241 if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0 1242 && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) { 1243 flags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 1244 suggestionSpans[i].setFlags(flags); 1245 } 1246 } 1247 } 1248 } 1249 1250 void sendOnTextChanged(int start, int after) { 1251 updateSpellCheckSpans(start, start + after, false); 1252 1253 // Flip flag to indicate the word iterator needs to have the text reset. 1254 mUpdateWordIteratorText = true; 1255 1256 // Hide the controllers as soon as text is modified (typing, procedural...) 1257 // We do not hide the span controllers, since they can be added when a new text is 1258 // inserted into the text view (voice IME). 1259 hideCursorControllers(); 1260 // Reset drag accelerator. 1261 if (mSelectionModifierCursorController != null) { 1262 mSelectionModifierCursorController.resetTouchOffsets(); 1263 } 1264 stopTextActionMode(); 1265 } 1266 1267 private int getLastTapPosition() { 1268 // No need to create the controller at that point, no last tap position saved 1269 if (mSelectionModifierCursorController != null) { 1270 int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); 1271 if (lastTapPosition >= 0) { 1272 // Safety check, should not be possible. 1273 if (lastTapPosition > mTextView.getText().length()) { 1274 lastTapPosition = mTextView.getText().length(); 1275 } 1276 return lastTapPosition; 1277 } 1278 } 1279 1280 return -1; 1281 } 1282 1283 void onWindowFocusChanged(boolean hasWindowFocus) { 1284 if (hasWindowFocus) { 1285 if (mBlink != null) { 1286 mBlink.uncancel(); 1287 makeBlink(); 1288 } 1289 final InputMethodManager imm = InputMethodManager.peekInstance(); 1290 if (mTextView.hasSelection() && !extractedTextModeWillBeStarted()) { 1291 refreshTextActionMode(); 1292 } 1293 } else { 1294 if (mBlink != null) { 1295 mBlink.cancel(); 1296 } 1297 if (mInputContentType != null) { 1298 mInputContentType.enterDown = false; 1299 } 1300 // Order matters! Must be done before onParentLostFocus to rely on isShowingUp 1301 hideCursorAndSpanControllers(); 1302 stopTextActionModeWithPreservingSelection(); 1303 if (mSuggestionsPopupWindow != null) { 1304 mSuggestionsPopupWindow.onParentLostFocus(); 1305 } 1306 1307 // Don't leave us in the middle of a batch edit. Same as in onFocusChanged 1308 ensureEndedBatchEdit(); 1309 } 1310 } 1311 1312 private void updateTapState(MotionEvent event) { 1313 final int action = event.getActionMasked(); 1314 if (action == MotionEvent.ACTION_DOWN) { 1315 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 1316 // Detect double tap and triple click. 1317 if (((mTapState == TAP_STATE_FIRST_TAP) 1318 || ((mTapState == TAP_STATE_DOUBLE_TAP) && isMouse)) 1319 && (SystemClock.uptimeMillis() - mLastTouchUpTime) <= 1320 ViewConfiguration.getDoubleTapTimeout()) { 1321 if (mTapState == TAP_STATE_FIRST_TAP) { 1322 mTapState = TAP_STATE_DOUBLE_TAP; 1323 } else { 1324 mTapState = TAP_STATE_TRIPLE_CLICK; 1325 } 1326 } else { 1327 mTapState = TAP_STATE_FIRST_TAP; 1328 } 1329 } 1330 if (action == MotionEvent.ACTION_UP) { 1331 mLastTouchUpTime = SystemClock.uptimeMillis(); 1332 } 1333 } 1334 1335 private boolean shouldFilterOutTouchEvent(MotionEvent event) { 1336 if (!event.isFromSource(InputDevice.SOURCE_MOUSE)) { 1337 return false; 1338 } 1339 final boolean primaryButtonStateChanged = 1340 ((mLastButtonState ^ event.getButtonState()) & MotionEvent.BUTTON_PRIMARY) != 0; 1341 final int action = event.getActionMasked(); 1342 if ((action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_UP) 1343 && !primaryButtonStateChanged) { 1344 return true; 1345 } 1346 if (action == MotionEvent.ACTION_MOVE 1347 && !event.isButtonPressed(MotionEvent.BUTTON_PRIMARY)) { 1348 return true; 1349 } 1350 return false; 1351 } 1352 1353 void onTouchEvent(MotionEvent event) { 1354 final boolean filterOutEvent = shouldFilterOutTouchEvent(event); 1355 mLastButtonState = event.getButtonState(); 1356 if (filterOutEvent) { 1357 if (event.getActionMasked() == MotionEvent.ACTION_UP) { 1358 mDiscardNextActionUp = true; 1359 } 1360 return; 1361 } 1362 updateTapState(event); 1363 updateFloatingToolbarVisibility(event); 1364 1365 if (hasSelectionController()) { 1366 getSelectionController().onTouchEvent(event); 1367 } 1368 1369 if (mShowSuggestionRunnable != null) { 1370 mTextView.removeCallbacks(mShowSuggestionRunnable); 1371 mShowSuggestionRunnable = null; 1372 } 1373 1374 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 1375 mLastDownPositionX = event.getX(); 1376 mLastDownPositionY = event.getY(); 1377 1378 // Reset this state; it will be re-set if super.onTouchEvent 1379 // causes focus to move to the view. 1380 mTouchFocusSelected = false; 1381 mIgnoreActionUpEvent = false; 1382 } 1383 } 1384 1385 private void updateFloatingToolbarVisibility(MotionEvent event) { 1386 if (mTextActionMode != null) { 1387 switch (event.getActionMasked()) { 1388 case MotionEvent.ACTION_MOVE: 1389 hideFloatingToolbar(); 1390 break; 1391 case MotionEvent.ACTION_UP: // fall through 1392 case MotionEvent.ACTION_CANCEL: 1393 showFloatingToolbar(); 1394 } 1395 } 1396 } 1397 1398 private void hideFloatingToolbar() { 1399 if (mTextActionMode != null) { 1400 mTextView.removeCallbacks(mShowFloatingToolbar); 1401 mTextActionMode.hide(ActionMode.DEFAULT_HIDE_DURATION); 1402 } 1403 } 1404 1405 private void showFloatingToolbar() { 1406 if (mTextActionMode != null) { 1407 // Delay "show" so it doesn't interfere with click confirmations 1408 // or double-clicks that could "dismiss" the floating toolbar. 1409 int delay = ViewConfiguration.getDoubleTapTimeout(); 1410 mTextView.postDelayed(mShowFloatingToolbar, delay); 1411 } 1412 } 1413 1414 public void beginBatchEdit() { 1415 mInBatchEditControllers = true; 1416 final InputMethodState ims = mInputMethodState; 1417 if (ims != null) { 1418 int nesting = ++ims.mBatchEditNesting; 1419 if (nesting == 1) { 1420 ims.mCursorChanged = false; 1421 ims.mChangedDelta = 0; 1422 if (ims.mContentChanged) { 1423 // We already have a pending change from somewhere else, 1424 // so turn this into a full update. 1425 ims.mChangedStart = 0; 1426 ims.mChangedEnd = mTextView.getText().length(); 1427 } else { 1428 ims.mChangedStart = EXTRACT_UNKNOWN; 1429 ims.mChangedEnd = EXTRACT_UNKNOWN; 1430 ims.mContentChanged = false; 1431 } 1432 mUndoInputFilter.beginBatchEdit(); 1433 mTextView.onBeginBatchEdit(); 1434 } 1435 } 1436 } 1437 1438 public void endBatchEdit() { 1439 mInBatchEditControllers = false; 1440 final InputMethodState ims = mInputMethodState; 1441 if (ims != null) { 1442 int nesting = --ims.mBatchEditNesting; 1443 if (nesting == 0) { 1444 finishBatchEdit(ims); 1445 } 1446 } 1447 } 1448 1449 void ensureEndedBatchEdit() { 1450 final InputMethodState ims = mInputMethodState; 1451 if (ims != null && ims.mBatchEditNesting != 0) { 1452 ims.mBatchEditNesting = 0; 1453 finishBatchEdit(ims); 1454 } 1455 } 1456 1457 void finishBatchEdit(final InputMethodState ims) { 1458 mTextView.onEndBatchEdit(); 1459 mUndoInputFilter.endBatchEdit(); 1460 1461 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1462 mTextView.updateAfterEdit(); 1463 reportExtractedText(); 1464 } else if (ims.mCursorChanged) { 1465 // Cheesy way to get us to report the current cursor location. 1466 mTextView.invalidateCursor(); 1467 } 1468 // sendUpdateSelection knows to avoid sending if the selection did 1469 // not actually change. 1470 sendUpdateSelection(); 1471 } 1472 1473 static final int EXTRACT_NOTHING = -2; 1474 static final int EXTRACT_UNKNOWN = -1; 1475 1476 boolean extractText(ExtractedTextRequest request, ExtractedText outText) { 1477 return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, 1478 EXTRACT_UNKNOWN, outText); 1479 } 1480 1481 private boolean extractTextInternal(@Nullable ExtractedTextRequest request, 1482 int partialStartOffset, int partialEndOffset, int delta, 1483 @Nullable ExtractedText outText) { 1484 if (request == null || outText == null) { 1485 return false; 1486 } 1487 1488 final CharSequence content = mTextView.getText(); 1489 if (content == null) { 1490 return false; 1491 } 1492 1493 if (partialStartOffset != EXTRACT_NOTHING) { 1494 final int N = content.length(); 1495 if (partialStartOffset < 0) { 1496 outText.partialStartOffset = outText.partialEndOffset = -1; 1497 partialStartOffset = 0; 1498 partialEndOffset = N; 1499 } else { 1500 // Now use the delta to determine the actual amount of text 1501 // we need. 1502 partialEndOffset += delta; 1503 // Adjust offsets to ensure we contain full spans. 1504 if (content instanceof Spanned) { 1505 Spanned spanned = (Spanned)content; 1506 Object[] spans = spanned.getSpans(partialStartOffset, 1507 partialEndOffset, ParcelableSpan.class); 1508 int i = spans.length; 1509 while (i > 0) { 1510 i--; 1511 int j = spanned.getSpanStart(spans[i]); 1512 if (j < partialStartOffset) partialStartOffset = j; 1513 j = spanned.getSpanEnd(spans[i]); 1514 if (j > partialEndOffset) partialEndOffset = j; 1515 } 1516 } 1517 outText.partialStartOffset = partialStartOffset; 1518 outText.partialEndOffset = partialEndOffset - delta; 1519 1520 if (partialStartOffset > N) { 1521 partialStartOffset = N; 1522 } else if (partialStartOffset < 0) { 1523 partialStartOffset = 0; 1524 } 1525 if (partialEndOffset > N) { 1526 partialEndOffset = N; 1527 } else if (partialEndOffset < 0) { 1528 partialEndOffset = 0; 1529 } 1530 } 1531 if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) { 1532 outText.text = content.subSequence(partialStartOffset, 1533 partialEndOffset); 1534 } else { 1535 outText.text = TextUtils.substring(content, partialStartOffset, 1536 partialEndOffset); 1537 } 1538 } else { 1539 outText.partialStartOffset = 0; 1540 outText.partialEndOffset = 0; 1541 outText.text = ""; 1542 } 1543 outText.flags = 0; 1544 if (MetaKeyKeyListener.getMetaState(content, MetaKeyKeyListener.META_SELECTING) != 0) { 1545 outText.flags |= ExtractedText.FLAG_SELECTING; 1546 } 1547 if (mTextView.isSingleLine()) { 1548 outText.flags |= ExtractedText.FLAG_SINGLE_LINE; 1549 } 1550 outText.startOffset = 0; 1551 outText.selectionStart = mTextView.getSelectionStart(); 1552 outText.selectionEnd = mTextView.getSelectionEnd(); 1553 return true; 1554 } 1555 1556 boolean reportExtractedText() { 1557 final Editor.InputMethodState ims = mInputMethodState; 1558 if (ims != null) { 1559 final boolean contentChanged = ims.mContentChanged; 1560 if (contentChanged || ims.mSelectionModeChanged) { 1561 ims.mContentChanged = false; 1562 ims.mSelectionModeChanged = false; 1563 final ExtractedTextRequest req = ims.mExtractedTextRequest; 1564 if (req != null) { 1565 InputMethodManager imm = InputMethodManager.peekInstance(); 1566 if (imm != null) { 1567 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1568 "Retrieving extracted start=" + ims.mChangedStart + 1569 " end=" + ims.mChangedEnd + 1570 " delta=" + ims.mChangedDelta); 1571 if (ims.mChangedStart < 0 && !contentChanged) { 1572 ims.mChangedStart = EXTRACT_NOTHING; 1573 } 1574 if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, 1575 ims.mChangedDelta, ims.mExtractedText)) { 1576 if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, 1577 "Reporting extracted start=" + 1578 ims.mExtractedText.partialStartOffset + 1579 " end=" + ims.mExtractedText.partialEndOffset + 1580 ": " + ims.mExtractedText.text); 1581 1582 imm.updateExtractedText(mTextView, req.token, ims.mExtractedText); 1583 ims.mChangedStart = EXTRACT_UNKNOWN; 1584 ims.mChangedEnd = EXTRACT_UNKNOWN; 1585 ims.mChangedDelta = 0; 1586 ims.mContentChanged = false; 1587 return true; 1588 } 1589 } 1590 } 1591 } 1592 } 1593 return false; 1594 } 1595 1596 private void sendUpdateSelection() { 1597 if (null != mInputMethodState && mInputMethodState.mBatchEditNesting <= 0) { 1598 final InputMethodManager imm = InputMethodManager.peekInstance(); 1599 if (null != imm) { 1600 final int selectionStart = mTextView.getSelectionStart(); 1601 final int selectionEnd = mTextView.getSelectionEnd(); 1602 int candStart = -1; 1603 int candEnd = -1; 1604 if (mTextView.getText() instanceof Spannable) { 1605 final Spannable sp = (Spannable) mTextView.getText(); 1606 candStart = EditableInputConnection.getComposingSpanStart(sp); 1607 candEnd = EditableInputConnection.getComposingSpanEnd(sp); 1608 } 1609 // InputMethodManager#updateSelection skips sending the message if 1610 // none of the parameters have changed since the last time we called it. 1611 imm.updateSelection(mTextView, 1612 selectionStart, selectionEnd, candStart, candEnd); 1613 } 1614 } 1615 } 1616 1617 void onDraw(Canvas canvas, Layout layout, Path highlight, Paint highlightPaint, 1618 int cursorOffsetVertical) { 1619 final int selectionStart = mTextView.getSelectionStart(); 1620 final int selectionEnd = mTextView.getSelectionEnd(); 1621 1622 final InputMethodState ims = mInputMethodState; 1623 if (ims != null && ims.mBatchEditNesting == 0) { 1624 InputMethodManager imm = InputMethodManager.peekInstance(); 1625 if (imm != null) { 1626 if (imm.isActive(mTextView)) { 1627 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1628 // We are in extract mode and the content has changed 1629 // in some way... just report complete new text to the 1630 // input method. 1631 reportExtractedText(); 1632 } 1633 } 1634 } 1635 } 1636 1637 if (mCorrectionHighlighter != null) { 1638 mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); 1639 } 1640 1641 if (highlight != null && selectionStart == selectionEnd && mCursorCount > 0) { 1642 drawCursor(canvas, cursorOffsetVertical); 1643 // Rely on the drawable entirely, do not draw the cursor line. 1644 // Has to be done after the IMM related code above which relies on the highlight. 1645 highlight = null; 1646 } 1647 1648 if (mTextView.canHaveDisplayList() && canvas.isHardwareAccelerated()) { 1649 drawHardwareAccelerated(canvas, layout, highlight, highlightPaint, 1650 cursorOffsetVertical); 1651 } else { 1652 layout.draw(canvas, highlight, highlightPaint, cursorOffsetVertical); 1653 } 1654 } 1655 1656 private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight, 1657 Paint highlightPaint, int cursorOffsetVertical) { 1658 final long lineRange = layout.getLineRangeForDraw(canvas); 1659 int firstLine = TextUtils.unpackRangeStartFromLong(lineRange); 1660 int lastLine = TextUtils.unpackRangeEndFromLong(lineRange); 1661 if (lastLine < 0) return; 1662 1663 layout.drawBackground(canvas, highlight, highlightPaint, cursorOffsetVertical, 1664 firstLine, lastLine); 1665 1666 if (layout instanceof DynamicLayout) { 1667 if (mTextRenderNodes == null) { 1668 mTextRenderNodes = ArrayUtils.emptyArray(TextRenderNode.class); 1669 } 1670 1671 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1672 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1673 int[] blockIndices = dynamicLayout.getBlockIndices(); 1674 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1675 final int indexFirstChangedBlock = dynamicLayout.getIndexFirstChangedBlock(); 1676 1677 int endOfPreviousBlock = -1; 1678 int searchStartIndex = 0; 1679 for (int i = 0; i < numberOfBlocks; i++) { 1680 int blockEndLine = blockEndLines[i]; 1681 int blockIndex = blockIndices[i]; 1682 1683 final boolean blockIsInvalid = blockIndex == DynamicLayout.INVALID_BLOCK_INDEX; 1684 if (blockIsInvalid) { 1685 blockIndex = getAvailableDisplayListIndex(blockIndices, numberOfBlocks, 1686 searchStartIndex); 1687 // Note how dynamic layout's internal block indices get updated from Editor 1688 blockIndices[i] = blockIndex; 1689 if (mTextRenderNodes[blockIndex] != null) { 1690 mTextRenderNodes[blockIndex].isDirty = true; 1691 } 1692 searchStartIndex = blockIndex + 1; 1693 } 1694 1695 if (mTextRenderNodes[blockIndex] == null) { 1696 mTextRenderNodes[blockIndex] = 1697 new TextRenderNode("Text " + blockIndex); 1698 } 1699 1700 final boolean blockDisplayListIsInvalid = mTextRenderNodes[blockIndex].needsRecord(); 1701 RenderNode blockDisplayList = mTextRenderNodes[blockIndex].renderNode; 1702 if (i >= indexFirstChangedBlock || blockDisplayListIsInvalid) { 1703 final int blockBeginLine = endOfPreviousBlock + 1; 1704 final int top = layout.getLineTop(blockBeginLine); 1705 final int bottom = layout.getLineBottom(blockEndLine); 1706 int left = 0; 1707 int right = mTextView.getWidth(); 1708 if (mTextView.getHorizontallyScrolling()) { 1709 float min = Float.MAX_VALUE; 1710 float max = Float.MIN_VALUE; 1711 for (int line = blockBeginLine; line <= blockEndLine; line++) { 1712 min = Math.min(min, layout.getLineLeft(line)); 1713 max = Math.max(max, layout.getLineRight(line)); 1714 } 1715 left = (int) min; 1716 right = (int) (max + 0.5f); 1717 } 1718 1719 // Rebuild display list if it is invalid 1720 if (blockDisplayListIsInvalid) { 1721 final DisplayListCanvas displayListCanvas = blockDisplayList.start( 1722 right - left, bottom - top); 1723 try { 1724 // drawText is always relative to TextView's origin, this translation 1725 // brings this range of text back to the top left corner of the viewport 1726 displayListCanvas.translate(-left, -top); 1727 layout.drawText(displayListCanvas, blockBeginLine, blockEndLine); 1728 mTextRenderNodes[blockIndex].isDirty = false; 1729 // No need to untranslate, previous context is popped after 1730 // drawDisplayList 1731 } finally { 1732 blockDisplayList.end(displayListCanvas); 1733 // Same as drawDisplayList below, handled by our TextView's parent 1734 blockDisplayList.setClipToBounds(false); 1735 } 1736 } 1737 1738 // Valid disply list whose index is >= indexFirstChangedBlock 1739 // only needs to update its drawing location. 1740 blockDisplayList.setLeftTopRightBottom(left, top, right, bottom); 1741 } 1742 1743 ((DisplayListCanvas) canvas).drawRenderNode(blockDisplayList); 1744 1745 endOfPreviousBlock = blockEndLine; 1746 } 1747 1748 dynamicLayout.setIndexFirstChangedBlock(numberOfBlocks); 1749 } else { 1750 // Boring layout is used for empty and hint text 1751 layout.drawText(canvas, firstLine, lastLine); 1752 } 1753 } 1754 1755 private int getAvailableDisplayListIndex(int[] blockIndices, int numberOfBlocks, 1756 int searchStartIndex) { 1757 int length = mTextRenderNodes.length; 1758 for (int i = searchStartIndex; i < length; i++) { 1759 boolean blockIndexFound = false; 1760 for (int j = 0; j < numberOfBlocks; j++) { 1761 if (blockIndices[j] == i) { 1762 blockIndexFound = true; 1763 break; 1764 } 1765 } 1766 if (blockIndexFound) continue; 1767 return i; 1768 } 1769 1770 // No available index found, the pool has to grow 1771 mTextRenderNodes = GrowingArrayUtils.append(mTextRenderNodes, length, null); 1772 return length; 1773 } 1774 1775 private void drawCursor(Canvas canvas, int cursorOffsetVertical) { 1776 final boolean translate = cursorOffsetVertical != 0; 1777 if (translate) canvas.translate(0, cursorOffsetVertical); 1778 for (int i = 0; i < mCursorCount; i++) { 1779 mCursorDrawable[i].draw(canvas); 1780 } 1781 if (translate) canvas.translate(0, -cursorOffsetVertical); 1782 } 1783 1784 /** 1785 * Invalidates all the sub-display lists that overlap the specified character range 1786 */ 1787 void invalidateTextDisplayList(Layout layout, int start, int end) { 1788 if (mTextRenderNodes != null && layout instanceof DynamicLayout) { 1789 final int firstLine = layout.getLineForOffset(start); 1790 final int lastLine = layout.getLineForOffset(end); 1791 1792 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1793 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1794 int[] blockIndices = dynamicLayout.getBlockIndices(); 1795 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1796 1797 int i = 0; 1798 // Skip the blocks before firstLine 1799 while (i < numberOfBlocks) { 1800 if (blockEndLines[i] >= firstLine) break; 1801 i++; 1802 } 1803 1804 // Invalidate all subsequent blocks until lastLine is passed 1805 while (i < numberOfBlocks) { 1806 final int blockIndex = blockIndices[i]; 1807 if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX) { 1808 mTextRenderNodes[blockIndex].isDirty = true; 1809 } 1810 if (blockEndLines[i] >= lastLine) break; 1811 i++; 1812 } 1813 } 1814 } 1815 1816 void invalidateTextDisplayList() { 1817 if (mTextRenderNodes != null) { 1818 for (int i = 0; i < mTextRenderNodes.length; i++) { 1819 if (mTextRenderNodes[i] != null) mTextRenderNodes[i].isDirty = true; 1820 } 1821 } 1822 } 1823 1824 void updateCursorsPositions() { 1825 if (mTextView.mCursorDrawableRes == 0) { 1826 mCursorCount = 0; 1827 return; 1828 } 1829 1830 Layout layout = getActiveLayout(); 1831 final int offset = mTextView.getSelectionStart(); 1832 final int line = layout.getLineForOffset(offset); 1833 final int top = layout.getLineTop(line); 1834 final int bottom = layout.getLineTop(line + 1); 1835 1836 mCursorCount = layout.isLevelBoundary(offset) ? 2 : 1; 1837 1838 int middle = bottom; 1839 if (mCursorCount == 2) { 1840 // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)} 1841 middle = (top + bottom) >> 1; 1842 } 1843 1844 boolean clamped = layout.shouldClampCursor(line); 1845 updateCursorPosition(0, top, middle, layout.getPrimaryHorizontal(offset, clamped)); 1846 1847 if (mCursorCount == 2) { 1848 updateCursorPosition(1, middle, bottom, layout.getSecondaryHorizontal(offset, clamped)); 1849 } 1850 } 1851 1852 void refreshTextActionMode() { 1853 if (extractedTextModeWillBeStarted()) { 1854 mRestartActionModeOnNextRefresh = false; 1855 return; 1856 } 1857 final boolean hasSelection = mTextView.hasSelection(); 1858 final SelectionModifierCursorController selectionController = getSelectionController(); 1859 final InsertionPointCursorController insertionController = getInsertionController(); 1860 if ((selectionController != null && selectionController.isCursorBeingModified()) 1861 || (insertionController != null && insertionController.isCursorBeingModified())) { 1862 // ActionMode should be managed by the currently active cursor controller. 1863 mRestartActionModeOnNextRefresh = false; 1864 return; 1865 } 1866 if (hasSelection) { 1867 hideInsertionPointCursorController(); 1868 if (mTextActionMode == null) { 1869 if (mRestartActionModeOnNextRefresh || mTextView.isInExtractedMode()) { 1870 // To avoid distraction, newly start action mode only when selection action 1871 // mode is being restarted or in full screen extracted mode. 1872 startSelectionActionMode(); 1873 } 1874 } else if (selectionController == null || !selectionController.isActive()) { 1875 // Insertion action mode is active. Avoid dismissing the selection. 1876 stopTextActionModeWithPreservingSelection(); 1877 startSelectionActionMode(); 1878 } else { 1879 mTextActionMode.invalidateContentRect(); 1880 } 1881 } else { 1882 // Insertion action mode is started only when insertion controller is explicitly 1883 // activated. 1884 if (insertionController == null || !insertionController.isActive()) { 1885 stopTextActionMode(); 1886 } else if (mTextActionMode != null) { 1887 mTextActionMode.invalidateContentRect(); 1888 } 1889 } 1890 mRestartActionModeOnNextRefresh = false; 1891 } 1892 1893 /** 1894 * Start an Insertion action mode. 1895 */ 1896 void startInsertionActionMode() { 1897 if (mInsertionActionModeRunnable != null) { 1898 mTextView.removeCallbacks(mInsertionActionModeRunnable); 1899 } 1900 if (extractedTextModeWillBeStarted()) { 1901 return; 1902 } 1903 stopTextActionMode(); 1904 1905 ActionMode.Callback actionModeCallback = 1906 new TextActionModeCallback(false /* hasSelection */); 1907 mTextActionMode = mTextView.startActionMode( 1908 actionModeCallback, ActionMode.TYPE_FLOATING); 1909 if (mTextActionMode != null && getInsertionController() != null) { 1910 getInsertionController().show(); 1911 } 1912 } 1913 1914 /** 1915 * Starts a Selection Action Mode with the current selection and ensures the selection handles 1916 * are shown if there is a selection. This should be used when the mode is started from a 1917 * non-touch event. 1918 * 1919 * @return true if the selection mode was actually started. 1920 */ 1921 boolean startSelectionActionMode() { 1922 boolean selectionStarted = startSelectionActionModeInternal(); 1923 if (selectionStarted) { 1924 getSelectionController().show(); 1925 } 1926 mRestartActionModeOnNextRefresh = false; 1927 return selectionStarted; 1928 } 1929 1930 /** 1931 * If the TextView allows text selection, selects the current word when no existing selection 1932 * was available and starts a drag. 1933 * 1934 * @return true if the drag was started. 1935 */ 1936 private boolean selectCurrentWordAndStartDrag() { 1937 if (mInsertionActionModeRunnable != null) { 1938 mTextView.removeCallbacks(mInsertionActionModeRunnable); 1939 } 1940 if (extractedTextModeWillBeStarted()) { 1941 return false; 1942 } 1943 if (!checkField()) { 1944 return false; 1945 } 1946 if (!mTextView.hasSelection() && !selectCurrentWord()) { 1947 // No selection and cannot select a word. 1948 return false; 1949 } 1950 stopTextActionModeWithPreservingSelection(); 1951 getSelectionController().enterDrag( 1952 SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_WORD); 1953 return true; 1954 } 1955 1956 /** 1957 * Checks whether a selection can be performed on the current TextView. 1958 * 1959 * @return true if a selection can be performed 1960 */ 1961 boolean checkField() { 1962 if (!mTextView.canSelectText() || !mTextView.requestFocus()) { 1963 Log.w(TextView.LOG_TAG, 1964 "TextView does not support text selection. Selection cancelled."); 1965 return false; 1966 } 1967 return true; 1968 } 1969 1970 private boolean startSelectionActionModeInternal() { 1971 if (extractedTextModeWillBeStarted()) { 1972 return false; 1973 } 1974 if (mTextActionMode != null) { 1975 // Text action mode is already started 1976 mTextActionMode.invalidate(); 1977 return false; 1978 } 1979 1980 if (!checkField() || !mTextView.hasSelection()) { 1981 return false; 1982 } 1983 1984 ActionMode.Callback actionModeCallback = 1985 new TextActionModeCallback(true /* hasSelection */); 1986 mTextActionMode = mTextView.startActionMode(actionModeCallback, ActionMode.TYPE_FLOATING); 1987 1988 final boolean selectionStarted = mTextActionMode != null; 1989 if (selectionStarted && !mTextView.isTextSelectable() && mShowSoftInputOnFocus) { 1990 // Show the IME to be able to replace text, except when selecting non editable text. 1991 final InputMethodManager imm = InputMethodManager.peekInstance(); 1992 if (imm != null) { 1993 imm.showSoftInput(mTextView, 0, null); 1994 } 1995 } 1996 return selectionStarted; 1997 } 1998 1999 boolean extractedTextModeWillBeStarted() { 2000 if (!(mTextView.isInExtractedMode())) { 2001 final InputMethodManager imm = InputMethodManager.peekInstance(); 2002 return imm != null && imm.isFullscreenMode(); 2003 } 2004 return false; 2005 } 2006 2007 /** 2008 * @return <code>true</code> if it's reasonable to offer to show suggestions depending on 2009 * the current cursor position or selection range. This method is consistent with the 2010 * method to show suggestions {@link SuggestionsPopupWindow#updateSuggestions}. 2011 */ 2012 private boolean shouldOfferToShowSuggestions() { 2013 CharSequence text = mTextView.getText(); 2014 if (!(text instanceof Spannable)) return false; 2015 2016 final Spannable spannable = (Spannable) text; 2017 final int selectionStart = mTextView.getSelectionStart(); 2018 final int selectionEnd = mTextView.getSelectionEnd(); 2019 final SuggestionSpan[] suggestionSpans = spannable.getSpans(selectionStart, selectionEnd, 2020 SuggestionSpan.class); 2021 if (suggestionSpans.length == 0) { 2022 return false; 2023 } 2024 if (selectionStart == selectionEnd) { 2025 // Spans overlap the cursor. 2026 for (int i = 0; i < suggestionSpans.length; i++) { 2027 if (suggestionSpans[i].getSuggestions().length > 0) { 2028 return true; 2029 } 2030 } 2031 return false; 2032 } 2033 int minSpanStart = mTextView.getText().length(); 2034 int maxSpanEnd = 0; 2035 int unionOfSpansCoveringSelectionStartStart = mTextView.getText().length(); 2036 int unionOfSpansCoveringSelectionStartEnd = 0; 2037 boolean hasValidSuggestions = false; 2038 for (int i = 0; i < suggestionSpans.length; i++) { 2039 final int spanStart = spannable.getSpanStart(suggestionSpans[i]); 2040 final int spanEnd = spannable.getSpanEnd(suggestionSpans[i]); 2041 minSpanStart = Math.min(minSpanStart, spanStart); 2042 maxSpanEnd = Math.max(maxSpanEnd, spanEnd); 2043 if (selectionStart < spanStart || selectionStart > spanEnd) { 2044 // The span doesn't cover the current selection start point. 2045 continue; 2046 } 2047 hasValidSuggestions = 2048 hasValidSuggestions || suggestionSpans[i].getSuggestions().length > 0; 2049 unionOfSpansCoveringSelectionStartStart = 2050 Math.min(unionOfSpansCoveringSelectionStartStart, spanStart); 2051 unionOfSpansCoveringSelectionStartEnd = 2052 Math.max(unionOfSpansCoveringSelectionStartEnd, spanEnd); 2053 } 2054 if (!hasValidSuggestions) { 2055 return false; 2056 } 2057 if (unionOfSpansCoveringSelectionStartStart >= unionOfSpansCoveringSelectionStartEnd) { 2058 // No spans cover the selection start point. 2059 return false; 2060 } 2061 if (minSpanStart < unionOfSpansCoveringSelectionStartStart 2062 || maxSpanEnd > unionOfSpansCoveringSelectionStartEnd) { 2063 // There is a span that is not covered by the union. In this case, we soouldn't offer 2064 // to show suggestions as it's confusing. 2065 return false; 2066 } 2067 return true; 2068 } 2069 2070 /** 2071 * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with 2072 * {@link SuggestionSpan#FLAG_EASY_CORRECT} set. 2073 */ 2074 private boolean isCursorInsideEasyCorrectionSpan() { 2075 Spannable spannable = (Spannable) mTextView.getText(); 2076 SuggestionSpan[] suggestionSpans = spannable.getSpans(mTextView.getSelectionStart(), 2077 mTextView.getSelectionEnd(), SuggestionSpan.class); 2078 for (int i = 0; i < suggestionSpans.length; i++) { 2079 if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) { 2080 return true; 2081 } 2082 } 2083 return false; 2084 } 2085 2086 void onTouchUpEvent(MotionEvent event) { 2087 boolean selectAllGotFocus = mSelectAllOnFocus && mTextView.didTouchFocusSelect(); 2088 hideCursorAndSpanControllers(); 2089 stopTextActionMode(); 2090 CharSequence text = mTextView.getText(); 2091 if (!selectAllGotFocus && text.length() > 0) { 2092 // Move cursor 2093 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 2094 Selection.setSelection((Spannable) text, offset); 2095 if (mSpellChecker != null) { 2096 // When the cursor moves, the word that was typed may need spell check 2097 mSpellChecker.onSelectionChanged(); 2098 } 2099 2100 if (!extractedTextModeWillBeStarted()) { 2101 if (isCursorInsideEasyCorrectionSpan()) { 2102 // Cancel the single tap delayed runnable. 2103 if (mInsertionActionModeRunnable != null) { 2104 mTextView.removeCallbacks(mInsertionActionModeRunnable); 2105 } 2106 2107 mShowSuggestionRunnable = new Runnable() { 2108 public void run() { 2109 replace(); 2110 } 2111 }; 2112 // removeCallbacks is performed on every touch 2113 mTextView.postDelayed(mShowSuggestionRunnable, 2114 ViewConfiguration.getDoubleTapTimeout()); 2115 } else if (hasInsertionController()) { 2116 getInsertionController().show(); 2117 } 2118 } 2119 } 2120 } 2121 2122 protected void stopTextActionMode() { 2123 if (mTextActionMode != null) { 2124 // This will hide the mSelectionModifierCursorController 2125 mTextActionMode.finish(); 2126 } 2127 } 2128 2129 private void stopTextActionModeWithPreservingSelection() { 2130 if (mTextActionMode != null) { 2131 mRestartActionModeOnNextRefresh = true; 2132 } 2133 mPreserveSelection = true; 2134 stopTextActionMode(); 2135 mPreserveSelection = false; 2136 } 2137 2138 /** 2139 * @return True if this view supports insertion handles. 2140 */ 2141 boolean hasInsertionController() { 2142 return mInsertionControllerEnabled; 2143 } 2144 2145 /** 2146 * @return True if this view supports selection handles. 2147 */ 2148 boolean hasSelectionController() { 2149 return mSelectionControllerEnabled; 2150 } 2151 2152 InsertionPointCursorController getInsertionController() { 2153 if (!mInsertionControllerEnabled) { 2154 return null; 2155 } 2156 2157 if (mInsertionPointCursorController == null) { 2158 mInsertionPointCursorController = new InsertionPointCursorController(); 2159 2160 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 2161 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 2162 } 2163 2164 return mInsertionPointCursorController; 2165 } 2166 2167 SelectionModifierCursorController getSelectionController() { 2168 if (!mSelectionControllerEnabled) { 2169 return null; 2170 } 2171 2172 if (mSelectionModifierCursorController == null) { 2173 mSelectionModifierCursorController = new SelectionModifierCursorController(); 2174 2175 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 2176 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 2177 } 2178 2179 return mSelectionModifierCursorController; 2180 } 2181 2182 /** 2183 * @hide 2184 */ 2185 @VisibleForTesting 2186 public Drawable[] getCursorDrawable() { 2187 return mCursorDrawable; 2188 } 2189 2190 private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) { 2191 if (mCursorDrawable[cursorIndex] == null) 2192 mCursorDrawable[cursorIndex] = mTextView.getContext().getDrawable( 2193 mTextView.mCursorDrawableRes); 2194 final Drawable drawable = mCursorDrawable[cursorIndex]; 2195 final int left = clampCursorHorizontalPosition(drawable, horizontal); 2196 final int width = drawable.getIntrinsicWidth(); 2197 drawable.setBounds(left, top - mTempRect.top, left + width, 2198 bottom + mTempRect.bottom); 2199 } 2200 2201 /** 2202 * Return clamped position for the cursor. If the cursor is within the boundaries of the view, 2203 * then it is offset with the left padding of the cursor drawable. If the cursor is at 2204 * the beginning or the end of the text then its drawable edge is aligned with left or right of 2205 * the view boundary. 2206 * 2207 * @param drawable Cursor drawable. 2208 * @param horizontal Horizontal position for the cursor. 2209 * @return The clamped horizontal position for the cursor. 2210 */ 2211 private final int clampCursorHorizontalPosition(final Drawable drawable, float 2212 horizontal) { 2213 horizontal = Math.max(0.5f, horizontal - 0.5f); 2214 if (mTempRect == null) mTempRect = new Rect(); 2215 drawable.getPadding(mTempRect); 2216 int scrollX = mTextView.getScrollX(); 2217 float horizontalDiff = horizontal - scrollX; 2218 int viewClippedWidth = mTextView.getWidth() - mTextView.getCompoundPaddingLeft() 2219 - mTextView.getCompoundPaddingRight(); 2220 2221 final int left; 2222 if (horizontalDiff >= (viewClippedWidth - 1f)) { 2223 // at the rightmost position 2224 final int cursorWidth = drawable.getIntrinsicWidth(); 2225 left = viewClippedWidth + scrollX - (cursorWidth - mTempRect.right); 2226 } else if (Math.abs(horizontalDiff) <= 1f) { 2227 // at the leftmost position 2228 left = scrollX - mTempRect.left; 2229 } else { 2230 left = (int) horizontal - mTempRect.left; 2231 } 2232 return left; 2233 } 2234 2235 /** 2236 * Called by the framework in response to a text auto-correction (such as fixing a typo using a 2237 * a dictionary) from the current input method, provided by it calling 2238 * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default 2239 * implementation flashes the background of the corrected word to provide feedback to the user. 2240 * 2241 * @param info The auto correct info about the text that was corrected. 2242 */ 2243 public void onCommitCorrection(CorrectionInfo info) { 2244 if (mCorrectionHighlighter == null) { 2245 mCorrectionHighlighter = new CorrectionHighlighter(); 2246 } else { 2247 mCorrectionHighlighter.invalidate(false); 2248 } 2249 2250 mCorrectionHighlighter.highlight(info); 2251 } 2252 2253 void onScrollChanged() { 2254 if (mPositionListener != null) { 2255 mPositionListener.onScrollChanged(); 2256 } 2257 if (mTextActionMode != null) { 2258 mTextActionMode.invalidateContentRect(); 2259 } 2260 } 2261 2262 /** 2263 * @return True when the TextView isFocused and has a valid zero-length selection (cursor). 2264 */ 2265 private boolean shouldBlink() { 2266 if (!isCursorVisible() || !mTextView.isFocused()) return false; 2267 2268 final int start = mTextView.getSelectionStart(); 2269 if (start < 0) return false; 2270 2271 final int end = mTextView.getSelectionEnd(); 2272 if (end < 0) return false; 2273 2274 return start == end; 2275 } 2276 2277 void makeBlink() { 2278 if (shouldBlink()) { 2279 mShowCursor = SystemClock.uptimeMillis(); 2280 if (mBlink == null) mBlink = new Blink(); 2281 mTextView.removeCallbacks(mBlink); 2282 mTextView.postDelayed(mBlink, BLINK); 2283 } else { 2284 if (mBlink != null) mTextView.removeCallbacks(mBlink); 2285 } 2286 } 2287 2288 private class Blink implements Runnable { 2289 private boolean mCancelled; 2290 2291 public void run() { 2292 if (mCancelled) { 2293 return; 2294 } 2295 2296 mTextView.removeCallbacks(this); 2297 2298 if (shouldBlink()) { 2299 if (mTextView.getLayout() != null) { 2300 mTextView.invalidateCursorPath(); 2301 } 2302 2303 mTextView.postDelayed(this, BLINK); 2304 } 2305 } 2306 2307 void cancel() { 2308 if (!mCancelled) { 2309 mTextView.removeCallbacks(this); 2310 mCancelled = true; 2311 } 2312 } 2313 2314 void uncancel() { 2315 mCancelled = false; 2316 } 2317 } 2318 2319 private DragShadowBuilder getTextThumbnailBuilder(int start, int end) { 2320 TextView shadowView = (TextView) View.inflate(mTextView.getContext(), 2321 com.android.internal.R.layout.text_drag_thumbnail, null); 2322 2323 if (shadowView == null) { 2324 throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); 2325 } 2326 2327 if (end - start > DRAG_SHADOW_MAX_TEXT_LENGTH) { 2328 final long range = getCharClusterRange(start + DRAG_SHADOW_MAX_TEXT_LENGTH); 2329 end = TextUtils.unpackRangeEndFromLong(range); 2330 } 2331 final CharSequence text = mTextView.getTransformedText(start, end); 2332 shadowView.setText(text); 2333 shadowView.setTextColor(mTextView.getTextColors()); 2334 2335 shadowView.setTextAppearance(R.styleable.Theme_textAppearanceLarge); 2336 shadowView.setGravity(Gravity.CENTER); 2337 2338 shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2339 ViewGroup.LayoutParams.WRAP_CONTENT)); 2340 2341 final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); 2342 shadowView.measure(size, size); 2343 2344 shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight()); 2345 shadowView.invalidate(); 2346 return new DragShadowBuilder(shadowView); 2347 } 2348 2349 private static class DragLocalState { 2350 public TextView sourceTextView; 2351 public int start, end; 2352 2353 public DragLocalState(TextView sourceTextView, int start, int end) { 2354 this.sourceTextView = sourceTextView; 2355 this.start = start; 2356 this.end = end; 2357 } 2358 } 2359 2360 void onDrop(DragEvent event) { 2361 StringBuilder content = new StringBuilder(""); 2362 2363 final DropPermissions dropPermissions = DropPermissions.obtain(event); 2364 if (dropPermissions != null) { 2365 dropPermissions.takeTransient(); 2366 } 2367 2368 try { 2369 ClipData clipData = event.getClipData(); 2370 final int itemCount = clipData.getItemCount(); 2371 for (int i=0; i < itemCount; i++) { 2372 Item item = clipData.getItemAt(i); 2373 content.append(item.coerceToStyledText(mTextView.getContext())); 2374 } 2375 } 2376 finally { 2377 if (dropPermissions != null) { 2378 dropPermissions.release(); 2379 } 2380 } 2381 2382 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 2383 2384 Object localState = event.getLocalState(); 2385 DragLocalState dragLocalState = null; 2386 if (localState instanceof DragLocalState) { 2387 dragLocalState = (DragLocalState) localState; 2388 } 2389 boolean dragDropIntoItself = dragLocalState != null && 2390 dragLocalState.sourceTextView == mTextView; 2391 2392 if (dragDropIntoItself) { 2393 if (offset >= dragLocalState.start && offset < dragLocalState.end) { 2394 // A drop inside the original selection discards the drop. 2395 return; 2396 } 2397 } 2398 2399 final int originalLength = mTextView.getText().length(); 2400 int min = offset; 2401 int max = offset; 2402 2403 Selection.setSelection((Spannable) mTextView.getText(), max); 2404 mTextView.replaceText_internal(min, max, content); 2405 2406 if (dragDropIntoItself) { 2407 int dragSourceStart = dragLocalState.start; 2408 int dragSourceEnd = dragLocalState.end; 2409 if (max <= dragSourceStart) { 2410 // Inserting text before selection has shifted positions 2411 final int shift = mTextView.getText().length() - originalLength; 2412 dragSourceStart += shift; 2413 dragSourceEnd += shift; 2414 } 2415 2416 mUndoInputFilter.setForceMerge(true); 2417 try { 2418 // Delete original selection 2419 mTextView.deleteText_internal(dragSourceStart, dragSourceEnd); 2420 2421 // Make sure we do not leave two adjacent spaces. 2422 final int prevCharIdx = Math.max(0, dragSourceStart - 1); 2423 final int nextCharIdx = Math.min(mTextView.getText().length(), dragSourceStart + 1); 2424 if (nextCharIdx > prevCharIdx + 1) { 2425 CharSequence t = mTextView.getTransformedText(prevCharIdx, nextCharIdx); 2426 if (Character.isSpaceChar(t.charAt(0)) && Character.isSpaceChar(t.charAt(1))) { 2427 mTextView.deleteText_internal(prevCharIdx, prevCharIdx + 1); 2428 } 2429 } 2430 } finally { 2431 mUndoInputFilter.setForceMerge(false); 2432 } 2433 } 2434 } 2435 2436 public void addSpanWatchers(Spannable text) { 2437 final int textLength = text.length(); 2438 2439 if (mKeyListener != null) { 2440 text.setSpan(mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2441 } 2442 2443 if (mSpanController == null) { 2444 mSpanController = new SpanController(); 2445 } 2446 text.setSpan(mSpanController, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2447 } 2448 2449 void setContextMenuAnchor(float x, float y) { 2450 mContextMenuAnchorX = x; 2451 mContextMenuAnchorY = y; 2452 } 2453 2454 void onCreateContextMenu(ContextMenu menu) { 2455 if (mIsBeingLongClicked || Float.isNaN(mContextMenuAnchorX) 2456 || Float.isNaN(mContextMenuAnchorY)) { 2457 return; 2458 } 2459 final int offset = mTextView.getOffsetForPosition(mContextMenuAnchorX, mContextMenuAnchorY); 2460 if (offset == -1) { 2461 return; 2462 } 2463 stopTextActionModeWithPreservingSelection(); 2464 final boolean isOnSelection = mTextView.hasSelection() 2465 && offset >= mTextView.getSelectionStart() && offset <= mTextView.getSelectionEnd(); 2466 if (!isOnSelection) { 2467 // Right clicked position is not on the selection. Remove the selection and move the 2468 // cursor to the right clicked position. 2469 Selection.setSelection((Spannable) mTextView.getText(), offset); 2470 stopTextActionMode(); 2471 } 2472 2473 if (shouldOfferToShowSuggestions()) { 2474 final SuggestionInfo[] suggestionInfoArray = 2475 new SuggestionInfo[SuggestionSpan.SUGGESTIONS_MAX_SIZE]; 2476 for (int i = 0; i < suggestionInfoArray.length; i++) { 2477 suggestionInfoArray[i] = new SuggestionInfo(); 2478 } 2479 final SubMenu subMenu = menu.addSubMenu(Menu.NONE, Menu.NONE, MENU_ITEM_ORDER_REPLACE, 2480 com.android.internal.R.string.replace); 2481 final int numItems = mSuggestionHelper.getSuggestionInfo(suggestionInfoArray, null); 2482 for (int i = 0; i < numItems; i++) { 2483 final SuggestionInfo info = suggestionInfoArray[i]; 2484 subMenu.add(Menu.NONE, Menu.NONE, i, info.mText) 2485 .setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() { 2486 @Override 2487 public boolean onMenuItemClick(MenuItem item) { 2488 replaceWithSuggestion(info); 2489 return true; 2490 } 2491 }); 2492 } 2493 } 2494 2495 menu.add(Menu.NONE, TextView.ID_UNDO, MENU_ITEM_ORDER_UNDO, 2496 com.android.internal.R.string.undo) 2497 .setAlphabeticShortcut('z') 2498 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2499 .setEnabled(mTextView.canUndo()); 2500 menu.add(Menu.NONE, TextView.ID_REDO, MENU_ITEM_ORDER_REDO, 2501 com.android.internal.R.string.redo) 2502 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2503 .setEnabled(mTextView.canRedo()); 2504 2505 menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, 2506 com.android.internal.R.string.cut) 2507 .setAlphabeticShortcut('x') 2508 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2509 .setEnabled(mTextView.canCut()); 2510 menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, 2511 com.android.internal.R.string.copy) 2512 .setAlphabeticShortcut('c') 2513 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2514 .setEnabled(mTextView.canCopy()); 2515 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, 2516 com.android.internal.R.string.paste) 2517 .setAlphabeticShortcut('v') 2518 .setEnabled(mTextView.canPaste()) 2519 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2520 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE_AS_PLAIN_TEXT, 2521 com.android.internal.R.string.paste_as_plain_text) 2522 .setEnabled(mTextView.canPaste()) 2523 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2524 menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, 2525 com.android.internal.R.string.share) 2526 .setEnabled(mTextView.canShare()) 2527 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2528 menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, 2529 com.android.internal.R.string.selectAll) 2530 .setAlphabeticShortcut('a') 2531 .setEnabled(mTextView.canSelectAllText()) 2532 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2533 2534 mPreserveSelection = true; 2535 } 2536 2537 @Nullable 2538 private SuggestionSpan findEquivalentSuggestionSpan( 2539 @NonNull SuggestionSpanInfo suggestionSpanInfo) { 2540 final Editable editable = (Editable) mTextView.getText(); 2541 if (editable.getSpanStart(suggestionSpanInfo.mSuggestionSpan) >= 0) { 2542 // Exactly same span is found. 2543 return suggestionSpanInfo.mSuggestionSpan; 2544 } 2545 // Suggestion span couldn't be found. Try to find a suggestion span that has the same 2546 // contents. 2547 final SuggestionSpan[] suggestionSpans = editable.getSpans(suggestionSpanInfo.mSpanStart, 2548 suggestionSpanInfo.mSpanEnd, SuggestionSpan.class); 2549 for (final SuggestionSpan suggestionSpan : suggestionSpans) { 2550 final int start = editable.getSpanStart(suggestionSpan); 2551 if (start != suggestionSpanInfo.mSpanStart) { 2552 continue; 2553 } 2554 final int end = editable.getSpanEnd(suggestionSpan); 2555 if (end != suggestionSpanInfo.mSpanEnd) { 2556 continue; 2557 } 2558 if (suggestionSpan.equals(suggestionSpanInfo.mSuggestionSpan)) { 2559 return suggestionSpan; 2560 } 2561 } 2562 return null; 2563 } 2564 2565 private void replaceWithSuggestion(@NonNull final SuggestionInfo suggestionInfo) { 2566 final SuggestionSpan targetSuggestionSpan = findEquivalentSuggestionSpan( 2567 suggestionInfo.mSuggestionSpanInfo); 2568 if (targetSuggestionSpan == null) { 2569 // Span has been removed 2570 return; 2571 } 2572 final Editable editable = (Editable) mTextView.getText(); 2573 final int spanStart = editable.getSpanStart(targetSuggestionSpan); 2574 final int spanEnd = editable.getSpanEnd(targetSuggestionSpan); 2575 if (spanStart < 0 || spanEnd <= spanStart) { 2576 // Span has been removed 2577 return; 2578 } 2579 2580 final String originalText = TextUtils.substring(editable, spanStart, spanEnd); 2581 // SuggestionSpans are removed by replace: save them before 2582 SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd, 2583 SuggestionSpan.class); 2584 final int length = suggestionSpans.length; 2585 int[] suggestionSpansStarts = new int[length]; 2586 int[] suggestionSpansEnds = new int[length]; 2587 int[] suggestionSpansFlags = new int[length]; 2588 for (int i = 0; i < length; i++) { 2589 final SuggestionSpan suggestionSpan = suggestionSpans[i]; 2590 suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan); 2591 suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan); 2592 suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan); 2593 2594 // Remove potential misspelled flags 2595 int suggestionSpanFlags = suggestionSpan.getFlags(); 2596 if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) != 0) { 2597 suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED; 2598 suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 2599 suggestionSpan.setFlags(suggestionSpanFlags); 2600 } 2601 } 2602 2603 // Notify source IME of the suggestion pick. Do this before swapping texts. 2604 targetSuggestionSpan.notifySelection( 2605 mTextView.getContext(), originalText, suggestionInfo.mSuggestionIndex); 2606 2607 // Swap text content between actual text and Suggestion span 2608 final int suggestionStart = suggestionInfo.mSuggestionStart; 2609 final int suggestionEnd = suggestionInfo.mSuggestionEnd; 2610 final String suggestion = suggestionInfo.mText.subSequence( 2611 suggestionStart, suggestionEnd).toString(); 2612 mTextView.replaceText_internal(spanStart, spanEnd, suggestion); 2613 2614 String[] suggestions = targetSuggestionSpan.getSuggestions(); 2615 suggestions[suggestionInfo.mSuggestionIndex] = originalText; 2616 2617 // Restore previous SuggestionSpans 2618 final int lengthDelta = suggestion.length() - (spanEnd - spanStart); 2619 for (int i = 0; i < length; i++) { 2620 // Only spans that include the modified region make sense after replacement 2621 // Spans partially included in the replaced region are removed, there is no 2622 // way to assign them a valid range after replacement 2623 if (suggestionSpansStarts[i] <= spanStart && suggestionSpansEnds[i] >= spanEnd) { 2624 mTextView.setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i], 2625 suggestionSpansEnds[i] + lengthDelta, suggestionSpansFlags[i]); 2626 } 2627 } 2628 // Move cursor at the end of the replaced word 2629 final int newCursorPosition = spanEnd + lengthDelta; 2630 mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); 2631 } 2632 2633 private final MenuItem.OnMenuItemClickListener mOnContextMenuItemClickListener = 2634 new MenuItem.OnMenuItemClickListener() { 2635 @Override 2636 public boolean onMenuItemClick(MenuItem item) { 2637 if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { 2638 return true; 2639 } 2640 return mTextView.onTextContextMenuItem(item.getItemId()); 2641 } 2642 }; 2643 2644 /** 2645 * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related 2646 * pop-up should be displayed. 2647 * Also monitors {@link Selection} to call back to the attached input method. 2648 */ 2649 class SpanController implements SpanWatcher { 2650 2651 private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs 2652 2653 private EasyEditPopupWindow mPopupWindow; 2654 2655 private Runnable mHidePopup; 2656 2657 // This function is pure but inner classes can't have static functions 2658 private boolean isNonIntermediateSelectionSpan(final Spannable text, 2659 final Object span) { 2660 return (Selection.SELECTION_START == span || Selection.SELECTION_END == span) 2661 && (text.getSpanFlags(span) & Spanned.SPAN_INTERMEDIATE) == 0; 2662 } 2663 2664 @Override 2665 public void onSpanAdded(Spannable text, Object span, int start, int end) { 2666 if (isNonIntermediateSelectionSpan(text, span)) { 2667 sendUpdateSelection(); 2668 } else if (span instanceof EasyEditSpan) { 2669 if (mPopupWindow == null) { 2670 mPopupWindow = new EasyEditPopupWindow(); 2671 mHidePopup = new Runnable() { 2672 @Override 2673 public void run() { 2674 hide(); 2675 } 2676 }; 2677 } 2678 2679 // Make sure there is only at most one EasyEditSpan in the text 2680 if (mPopupWindow.mEasyEditSpan != null) { 2681 mPopupWindow.mEasyEditSpan.setDeleteEnabled(false); 2682 } 2683 2684 mPopupWindow.setEasyEditSpan((EasyEditSpan) span); 2685 mPopupWindow.setOnDeleteListener(new EasyEditDeleteListener() { 2686 @Override 2687 public void onDeleteClick(EasyEditSpan span) { 2688 Editable editable = (Editable) mTextView.getText(); 2689 int start = editable.getSpanStart(span); 2690 int end = editable.getSpanEnd(span); 2691 if (start >= 0 && end >= 0) { 2692 sendEasySpanNotification(EasyEditSpan.TEXT_DELETED, span); 2693 mTextView.deleteText_internal(start, end); 2694 } 2695 editable.removeSpan(span); 2696 } 2697 }); 2698 2699 if (mTextView.getWindowVisibility() != View.VISIBLE) { 2700 // The window is not visible yet, ignore the text change. 2701 return; 2702 } 2703 2704 if (mTextView.getLayout() == null) { 2705 // The view has not been laid out yet, ignore the text change 2706 return; 2707 } 2708 2709 if (extractedTextModeWillBeStarted()) { 2710 // The input is in extract mode. Do not handle the easy edit in 2711 // the original TextView, as the ExtractEditText will do 2712 return; 2713 } 2714 2715 mPopupWindow.show(); 2716 mTextView.removeCallbacks(mHidePopup); 2717 mTextView.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS); 2718 } 2719 } 2720 2721 @Override 2722 public void onSpanRemoved(Spannable text, Object span, int start, int end) { 2723 if (isNonIntermediateSelectionSpan(text, span)) { 2724 sendUpdateSelection(); 2725 } else if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { 2726 hide(); 2727 } 2728 } 2729 2730 @Override 2731 public void onSpanChanged(Spannable text, Object span, int previousStart, int previousEnd, 2732 int newStart, int newEnd) { 2733 if (isNonIntermediateSelectionSpan(text, span)) { 2734 sendUpdateSelection(); 2735 } else if (mPopupWindow != null && span instanceof EasyEditSpan) { 2736 EasyEditSpan easyEditSpan = (EasyEditSpan) span; 2737 sendEasySpanNotification(EasyEditSpan.TEXT_MODIFIED, easyEditSpan); 2738 text.removeSpan(easyEditSpan); 2739 } 2740 } 2741 2742 public void hide() { 2743 if (mPopupWindow != null) { 2744 mPopupWindow.hide(); 2745 mTextView.removeCallbacks(mHidePopup); 2746 } 2747 } 2748 2749 private void sendEasySpanNotification(int textChangedType, EasyEditSpan span) { 2750 try { 2751 PendingIntent pendingIntent = span.getPendingIntent(); 2752 if (pendingIntent != null) { 2753 Intent intent = new Intent(); 2754 intent.putExtra(EasyEditSpan.EXTRA_TEXT_CHANGED_TYPE, textChangedType); 2755 pendingIntent.send(mTextView.getContext(), 0, intent); 2756 } 2757 } catch (CanceledException e) { 2758 // This should not happen, as we should try to send the intent only once. 2759 Log.w(TAG, "PendingIntent for notification cannot be sent", e); 2760 } 2761 } 2762 } 2763 2764 /** 2765 * Listens for the delete event triggered by {@link EasyEditPopupWindow}. 2766 */ 2767 private interface EasyEditDeleteListener { 2768 2769 /** 2770 * Clicks the delete pop-up. 2771 */ 2772 void onDeleteClick(EasyEditSpan span); 2773 } 2774 2775 /** 2776 * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled 2777 * by {@link SpanController}. 2778 */ 2779 private class EasyEditPopupWindow extends PinnedPopupWindow 2780 implements OnClickListener { 2781 private static final int POPUP_TEXT_LAYOUT = 2782 com.android.internal.R.layout.text_edit_action_popup_text; 2783 private TextView mDeleteTextView; 2784 private EasyEditSpan mEasyEditSpan; 2785 private EasyEditDeleteListener mOnDeleteListener; 2786 2787 @Override 2788 protected void createPopupWindow() { 2789 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 2790 com.android.internal.R.attr.textSelectHandleWindowStyle); 2791 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 2792 mPopupWindow.setClippingEnabled(true); 2793 } 2794 2795 @Override 2796 protected void initContentView() { 2797 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 2798 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 2799 mContentView = linearLayout; 2800 mContentView.setBackgroundResource( 2801 com.android.internal.R.drawable.text_edit_side_paste_window); 2802 2803 LayoutInflater inflater = (LayoutInflater)mTextView.getContext(). 2804 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 2805 2806 LayoutParams wrapContent = new LayoutParams( 2807 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 2808 2809 mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 2810 mDeleteTextView.setLayoutParams(wrapContent); 2811 mDeleteTextView.setText(com.android.internal.R.string.delete); 2812 mDeleteTextView.setOnClickListener(this); 2813 mContentView.addView(mDeleteTextView); 2814 } 2815 2816 public void setEasyEditSpan(EasyEditSpan easyEditSpan) { 2817 mEasyEditSpan = easyEditSpan; 2818 } 2819 2820 private void setOnDeleteListener(EasyEditDeleteListener listener) { 2821 mOnDeleteListener = listener; 2822 } 2823 2824 @Override 2825 public void onClick(View view) { 2826 if (view == mDeleteTextView 2827 && mEasyEditSpan != null && mEasyEditSpan.isDeleteEnabled() 2828 && mOnDeleteListener != null) { 2829 mOnDeleteListener.onDeleteClick(mEasyEditSpan); 2830 } 2831 } 2832 2833 @Override 2834 public void hide() { 2835 if (mEasyEditSpan != null) { 2836 mEasyEditSpan.setDeleteEnabled(false); 2837 } 2838 mOnDeleteListener = null; 2839 super.hide(); 2840 } 2841 2842 @Override 2843 protected int getTextOffset() { 2844 // Place the pop-up at the end of the span 2845 Editable editable = (Editable) mTextView.getText(); 2846 return editable.getSpanEnd(mEasyEditSpan); 2847 } 2848 2849 @Override 2850 protected int getVerticalLocalPosition(int line) { 2851 return mTextView.getLayout().getLineBottom(line); 2852 } 2853 2854 @Override 2855 protected int clipVertically(int positionY) { 2856 // As we display the pop-up below the span, no vertical clipping is required. 2857 return positionY; 2858 } 2859 } 2860 2861 private class PositionListener implements ViewTreeObserver.OnPreDrawListener { 2862 // 3 handles 2863 // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others) 2864 // 1 CursorAnchorInfoNotifier 2865 private final int MAXIMUM_NUMBER_OF_LISTENERS = 7; 2866 private TextViewPositionListener[] mPositionListeners = 2867 new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS]; 2868 private boolean mCanMove[] = new boolean[MAXIMUM_NUMBER_OF_LISTENERS]; 2869 private boolean mPositionHasChanged = true; 2870 // Absolute position of the TextView with respect to its parent window 2871 private int mPositionX, mPositionY; 2872 private int mNumberOfListeners; 2873 private boolean mScrollHasChanged; 2874 final int[] mTempCoords = new int[2]; 2875 2876 public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) { 2877 if (mNumberOfListeners == 0) { 2878 updatePosition(); 2879 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2880 vto.addOnPreDrawListener(this); 2881 } 2882 2883 int emptySlotIndex = -1; 2884 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2885 TextViewPositionListener listener = mPositionListeners[i]; 2886 if (listener == positionListener) { 2887 return; 2888 } else if (emptySlotIndex < 0 && listener == null) { 2889 emptySlotIndex = i; 2890 } 2891 } 2892 2893 mPositionListeners[emptySlotIndex] = positionListener; 2894 mCanMove[emptySlotIndex] = canMove; 2895 mNumberOfListeners++; 2896 } 2897 2898 public void removeSubscriber(TextViewPositionListener positionListener) { 2899 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2900 if (mPositionListeners[i] == positionListener) { 2901 mPositionListeners[i] = null; 2902 mNumberOfListeners--; 2903 break; 2904 } 2905 } 2906 2907 if (mNumberOfListeners == 0) { 2908 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 2909 vto.removeOnPreDrawListener(this); 2910 } 2911 } 2912 2913 public int getPositionX() { 2914 return mPositionX; 2915 } 2916 2917 public int getPositionY() { 2918 return mPositionY; 2919 } 2920 2921 @Override 2922 public boolean onPreDraw() { 2923 updatePosition(); 2924 2925 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 2926 if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) { 2927 TextViewPositionListener positionListener = mPositionListeners[i]; 2928 if (positionListener != null) { 2929 positionListener.updatePosition(mPositionX, mPositionY, 2930 mPositionHasChanged, mScrollHasChanged); 2931 } 2932 } 2933 } 2934 2935 mScrollHasChanged = false; 2936 return true; 2937 } 2938 2939 private void updatePosition() { 2940 mTextView.getLocationInWindow(mTempCoords); 2941 2942 mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY; 2943 2944 mPositionX = mTempCoords[0]; 2945 mPositionY = mTempCoords[1]; 2946 } 2947 2948 public void onScrollChanged() { 2949 mScrollHasChanged = true; 2950 } 2951 } 2952 2953 private abstract class PinnedPopupWindow implements TextViewPositionListener { 2954 protected PopupWindow mPopupWindow; 2955 protected ViewGroup mContentView; 2956 int mPositionX, mPositionY; 2957 int mClippingLimitLeft, mClippingLimitRight; 2958 2959 protected abstract void createPopupWindow(); 2960 protected abstract void initContentView(); 2961 protected abstract int getTextOffset(); 2962 protected abstract int getVerticalLocalPosition(int line); 2963 protected abstract int clipVertically(int positionY); 2964 2965 public PinnedPopupWindow() { 2966 createPopupWindow(); 2967 2968 mPopupWindow.setWindowLayoutType( 2969 WindowManager.LayoutParams.TYPE_APPLICATION_ABOVE_SUB_PANEL); 2970 mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 2971 mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 2972 2973 initContentView(); 2974 2975 LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2976 ViewGroup.LayoutParams.WRAP_CONTENT); 2977 mContentView.setLayoutParams(wrapContent); 2978 2979 mPopupWindow.setContentView(mContentView); 2980 } 2981 2982 public void show() { 2983 getPositionListener().addSubscriber(this, false /* offset is fixed */); 2984 2985 computeLocalPosition(); 2986 2987 final PositionListener positionListener = getPositionListener(); 2988 updatePosition(positionListener.getPositionX(), positionListener.getPositionY()); 2989 } 2990 2991 protected void measureContent() { 2992 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 2993 mContentView.measure( 2994 View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, 2995 View.MeasureSpec.AT_MOST), 2996 View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, 2997 View.MeasureSpec.AT_MOST)); 2998 } 2999 3000 /* The popup window will be horizontally centered on the getTextOffset() and vertically 3001 * positioned according to viewportToContentHorizontalOffset. 3002 * 3003 * This method assumes that mContentView has properly been measured from its content. */ 3004 private void computeLocalPosition() { 3005 measureContent(); 3006 final int width = mContentView.getMeasuredWidth(); 3007 final int offset = getTextOffset(); 3008 mPositionX = (int) (mTextView.getLayout().getPrimaryHorizontal(offset) - width / 2.0f); 3009 mPositionX += mTextView.viewportToContentHorizontalOffset(); 3010 3011 final int line = mTextView.getLayout().getLineForOffset(offset); 3012 mPositionY = getVerticalLocalPosition(line); 3013 mPositionY += mTextView.viewportToContentVerticalOffset(); 3014 } 3015 3016 private void updatePosition(int parentPositionX, int parentPositionY) { 3017 int positionX = parentPositionX + mPositionX; 3018 int positionY = parentPositionY + mPositionY; 3019 3020 positionY = clipVertically(positionY); 3021 3022 // Horizontal clipping 3023 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3024 final int width = mContentView.getMeasuredWidth(); 3025 positionX = Math.min( 3026 displayMetrics.widthPixels - width + mClippingLimitRight, positionX); 3027 positionX = Math.max(-mClippingLimitLeft, positionX); 3028 3029 if (isShowing()) { 3030 mPopupWindow.update(positionX, positionY, -1, -1); 3031 } else { 3032 mPopupWindow.showAtLocation(mTextView, Gravity.NO_GRAVITY, 3033 positionX, positionY); 3034 } 3035 } 3036 3037 public void hide() { 3038 if (!isShowing()) { 3039 return; 3040 } 3041 mPopupWindow.dismiss(); 3042 getPositionListener().removeSubscriber(this); 3043 } 3044 3045 @Override 3046 public void updatePosition(int parentPositionX, int parentPositionY, 3047 boolean parentPositionChanged, boolean parentScrolled) { 3048 // Either parentPositionChanged or parentScrolled is true, check if still visible 3049 if (isShowing() && isOffsetVisible(getTextOffset())) { 3050 if (parentScrolled) computeLocalPosition(); 3051 updatePosition(parentPositionX, parentPositionY); 3052 } else { 3053 hide(); 3054 } 3055 } 3056 3057 public boolean isShowing() { 3058 return mPopupWindow.isShowing(); 3059 } 3060 } 3061 3062 private static final class SuggestionInfo { 3063 // Range of actual suggestion within mText 3064 int mSuggestionStart, mSuggestionEnd; 3065 3066 // The SuggestionSpan that this TextView represents 3067 final SuggestionSpanInfo mSuggestionSpanInfo = new SuggestionSpanInfo(); 3068 3069 // The index of this suggestion inside suggestionSpan 3070 int mSuggestionIndex; 3071 3072 final SpannableStringBuilder mText = new SpannableStringBuilder(); 3073 3074 void clear() { 3075 mSuggestionSpanInfo.clear(); 3076 mText.clear(); 3077 } 3078 3079 // Utility method to set attributes about a SuggestionSpan. 3080 void setSpanInfo(SuggestionSpan span, int spanStart, int spanEnd) { 3081 mSuggestionSpanInfo.mSuggestionSpan = span; 3082 mSuggestionSpanInfo.mSpanStart = spanStart; 3083 mSuggestionSpanInfo.mSpanEnd = spanEnd; 3084 } 3085 } 3086 3087 private static final class SuggestionSpanInfo { 3088 // The SuggestionSpan; 3089 @Nullable 3090 SuggestionSpan mSuggestionSpan; 3091 3092 // The SuggestionSpan start position 3093 int mSpanStart; 3094 3095 // The SuggestionSpan end position 3096 int mSpanEnd; 3097 3098 void clear() { 3099 mSuggestionSpan = null; 3100 } 3101 } 3102 3103 private class SuggestionHelper { 3104 private final Comparator<SuggestionSpan> mSuggestionSpanComparator = 3105 new SuggestionSpanComparator(); 3106 private final HashMap<SuggestionSpan, Integer> mSpansLengths = 3107 new HashMap<SuggestionSpan, Integer>(); 3108 3109 private class SuggestionSpanComparator implements Comparator<SuggestionSpan> { 3110 public int compare(SuggestionSpan span1, SuggestionSpan span2) { 3111 final int flag1 = span1.getFlags(); 3112 final int flag2 = span2.getFlags(); 3113 if (flag1 != flag2) { 3114 // The order here should match what is used in updateDrawState 3115 final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 3116 final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 3117 final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0; 3118 final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0; 3119 if (easy1 && !misspelled1) return -1; 3120 if (easy2 && !misspelled2) return 1; 3121 if (misspelled1) return -1; 3122 if (misspelled2) return 1; 3123 } 3124 3125 return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue(); 3126 } 3127 } 3128 3129 /** 3130 * Returns the suggestion spans that cover the current cursor position. The suggestion 3131 * spans are sorted according to the length of text that they are attached to. 3132 */ 3133 private SuggestionSpan[] getSortedSuggestionSpans() { 3134 int pos = mTextView.getSelectionStart(); 3135 Spannable spannable = (Spannable) mTextView.getText(); 3136 SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class); 3137 3138 mSpansLengths.clear(); 3139 for (SuggestionSpan suggestionSpan : suggestionSpans) { 3140 int start = spannable.getSpanStart(suggestionSpan); 3141 int end = spannable.getSpanEnd(suggestionSpan); 3142 mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start)); 3143 } 3144 3145 // The suggestions are sorted according to their types (easy correction first, then 3146 // misspelled) and to the length of the text that they cover (shorter first). 3147 Arrays.sort(suggestionSpans, mSuggestionSpanComparator); 3148 mSpansLengths.clear(); 3149 3150 return suggestionSpans; 3151 } 3152 3153 /** 3154 * Gets the SuggestionInfo list that contains suggestion information at the current cursor 3155 * position. 3156 * 3157 * @param suggestionInfos SuggestionInfo array the results will be set. 3158 * @param misspelledSpanInfo a struct the misspelled SuggestionSpan info will be set. 3159 * @return the number of suggestions actually fetched. 3160 */ 3161 public int getSuggestionInfo(SuggestionInfo[] suggestionInfos, 3162 @Nullable SuggestionSpanInfo misspelledSpanInfo) { 3163 final Spannable spannable = (Spannable) mTextView.getText(); 3164 final SuggestionSpan[] suggestionSpans = getSortedSuggestionSpans(); 3165 final int nbSpans = suggestionSpans.length; 3166 if (nbSpans == 0) return 0; 3167 3168 int numberOfSuggestions = 0; 3169 for (final SuggestionSpan suggestionSpan : suggestionSpans) { 3170 final int spanStart = spannable.getSpanStart(suggestionSpan); 3171 final int spanEnd = spannable.getSpanEnd(suggestionSpan); 3172 3173 if (misspelledSpanInfo != null 3174 && (suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) { 3175 misspelledSpanInfo.mSuggestionSpan = suggestionSpan; 3176 misspelledSpanInfo.mSpanStart = spanStart; 3177 misspelledSpanInfo.mSpanEnd = spanEnd; 3178 } 3179 3180 final String[] suggestions = suggestionSpan.getSuggestions(); 3181 final int nbSuggestions = suggestions.length; 3182 suggestionLoop: 3183 for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) { 3184 final String suggestion = suggestions[suggestionIndex]; 3185 for (int i = 0; i < numberOfSuggestions; i++) { 3186 final SuggestionInfo otherSuggestionInfo = suggestionInfos[i]; 3187 if (otherSuggestionInfo.mText.toString().equals(suggestion)) { 3188 final int otherSpanStart = 3189 otherSuggestionInfo.mSuggestionSpanInfo.mSpanStart; 3190 final int otherSpanEnd = 3191 otherSuggestionInfo.mSuggestionSpanInfo.mSpanEnd; 3192 if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) { 3193 continue suggestionLoop; 3194 } 3195 } 3196 } 3197 3198 SuggestionInfo suggestionInfo = suggestionInfos[numberOfSuggestions]; 3199 suggestionInfo.setSpanInfo(suggestionSpan, spanStart, spanEnd); 3200 suggestionInfo.mSuggestionIndex = suggestionIndex; 3201 suggestionInfo.mSuggestionStart = 0; 3202 suggestionInfo.mSuggestionEnd = suggestion.length(); 3203 suggestionInfo.mText.replace(0, suggestionInfo.mText.length(), suggestion); 3204 numberOfSuggestions++; 3205 if (numberOfSuggestions >= suggestionInfos.length) { 3206 return numberOfSuggestions; 3207 } 3208 } 3209 } 3210 return numberOfSuggestions; 3211 } 3212 } 3213 3214 @VisibleForTesting 3215 public class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener { 3216 private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE; 3217 3218 // Key of intent extras for inserting new word into user dictionary. 3219 private static final String USER_DICTIONARY_EXTRA_WORD = "word"; 3220 private static final String USER_DICTIONARY_EXTRA_LOCALE = "locale"; 3221 3222 private SuggestionInfo[] mSuggestionInfos; 3223 private int mNumberOfSuggestions; 3224 private boolean mCursorWasVisibleBeforeSuggestions; 3225 private boolean mIsShowingUp = false; 3226 private SuggestionAdapter mSuggestionsAdapter; 3227 private final TextAppearanceSpan mHighlightSpan = new TextAppearanceSpan( 3228 mTextView.getContext(), mTextView.mTextEditSuggestionHighlightStyle); 3229 private TextView mAddToDictionaryButton; 3230 private TextView mDeleteButton; 3231 private ListView mSuggestionListView; 3232 private final SuggestionSpanInfo mMisspelledSpanInfo = new SuggestionSpanInfo(); 3233 private int mContainerMarginWidth; 3234 private int mContainerMarginTop; 3235 3236 private class CustomPopupWindow extends PopupWindow { 3237 @Override 3238 public void dismiss() { 3239 if (!isShowing()) { 3240 return; 3241 } 3242 super.dismiss(); 3243 getPositionListener().removeSubscriber(SuggestionsPopupWindow.this); 3244 3245 // Safe cast since show() checks that mTextView.getText() is an Editable 3246 ((Spannable) mTextView.getText()).removeSpan(mSuggestionRangeSpan); 3247 3248 mTextView.setCursorVisible(mCursorWasVisibleBeforeSuggestions); 3249 if (hasInsertionController() && !extractedTextModeWillBeStarted()) { 3250 getInsertionController().show(); 3251 } 3252 } 3253 } 3254 3255 public SuggestionsPopupWindow() { 3256 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 3257 } 3258 3259 @Override 3260 protected void createPopupWindow() { 3261 mPopupWindow = new CustomPopupWindow(); 3262 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 3263 mPopupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT)); 3264 mPopupWindow.setFocusable(true); 3265 mPopupWindow.setClippingEnabled(false); 3266 } 3267 3268 @Override 3269 protected void initContentView() { 3270 final LayoutInflater inflater = (LayoutInflater) mTextView.getContext(). 3271 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 3272 final ViewGroup relativeLayout = (ViewGroup) inflater.inflate( 3273 mTextView.mTextEditSuggestionContainerLayout, null); 3274 3275 final LinearLayout suggestionWindowContainer = 3276 (LinearLayout) relativeLayout.findViewById( 3277 com.android.internal.R.id.suggestionWindowContainer); 3278 ViewGroup.MarginLayoutParams lp = 3279 (ViewGroup.MarginLayoutParams) suggestionWindowContainer.getLayoutParams(); 3280 mContainerMarginWidth = lp.leftMargin + lp.rightMargin; 3281 mContainerMarginTop = lp.topMargin; 3282 mClippingLimitLeft = lp.leftMargin; 3283 mClippingLimitRight = lp.rightMargin; 3284 3285 mSuggestionListView = (ListView) relativeLayout.findViewById( 3286 com.android.internal.R.id.suggestionContainer); 3287 3288 mSuggestionsAdapter = new SuggestionAdapter(); 3289 mSuggestionListView.setAdapter(mSuggestionsAdapter); 3290 mSuggestionListView.setOnItemClickListener(this); 3291 3292 // Inflate the suggestion items once and for all. 3293 mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS]; 3294 for (int i = 0; i < mSuggestionInfos.length; i++) { 3295 mSuggestionInfos[i] = new SuggestionInfo(); 3296 } 3297 3298 mContentView = relativeLayout; 3299 3300 mAddToDictionaryButton = (TextView) relativeLayout.findViewById( 3301 com.android.internal.R.id.addToDictionaryButton); 3302 mAddToDictionaryButton.setOnClickListener(new View.OnClickListener() { 3303 public void onClick(View v) { 3304 final SuggestionSpan misspelledSpan = 3305 findEquivalentSuggestionSpan(mMisspelledSpanInfo); 3306 if (misspelledSpan == null) { 3307 // Span has been removed. 3308 return; 3309 } 3310 final Editable editable = (Editable) mTextView.getText(); 3311 final int spanStart = editable.getSpanStart(misspelledSpan); 3312 final int spanEnd = editable.getSpanEnd(misspelledSpan); 3313 if (spanStart < 0 || spanEnd <= spanStart) { 3314 return; 3315 } 3316 final String originalText = TextUtils.substring(editable, spanStart, spanEnd); 3317 3318 final Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT); 3319 intent.putExtra(USER_DICTIONARY_EXTRA_WORD, originalText); 3320 intent.putExtra(USER_DICTIONARY_EXTRA_LOCALE, 3321 mTextView.getTextServicesLocale().toString()); 3322 intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); 3323 mTextView.getContext().startActivity(intent); 3324 // There is no way to know if the word was indeed added. Re-check. 3325 // TODO The ExtractEditText should remove the span in the original text instead 3326 editable.removeSpan(mMisspelledSpanInfo.mSuggestionSpan); 3327 Selection.setSelection(editable, spanEnd); 3328 updateSpellCheckSpans(spanStart, spanEnd, false); 3329 hideWithCleanUp(); 3330 } 3331 }); 3332 3333 mDeleteButton = (TextView) relativeLayout.findViewById( 3334 com.android.internal.R.id.deleteButton); 3335 mDeleteButton.setOnClickListener(new View.OnClickListener() { 3336 public void onClick(View v) { 3337 final Editable editable = (Editable) mTextView.getText(); 3338 3339 final int spanUnionStart = editable.getSpanStart(mSuggestionRangeSpan); 3340 int spanUnionEnd = editable.getSpanEnd(mSuggestionRangeSpan); 3341 if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) { 3342 // Do not leave two adjacent spaces after deletion, or one at beginning of 3343 // text 3344 if (spanUnionEnd < editable.length() && 3345 Character.isSpaceChar(editable.charAt(spanUnionEnd)) && 3346 (spanUnionStart == 0 || 3347 Character.isSpaceChar(editable.charAt(spanUnionStart - 1)))) { 3348 spanUnionEnd = spanUnionEnd + 1; 3349 } 3350 mTextView.deleteText_internal(spanUnionStart, spanUnionEnd); 3351 } 3352 hideWithCleanUp(); 3353 } 3354 }); 3355 3356 } 3357 3358 public boolean isShowingUp() { 3359 return mIsShowingUp; 3360 } 3361 3362 public void onParentLostFocus() { 3363 mIsShowingUp = false; 3364 } 3365 3366 private class SuggestionAdapter extends BaseAdapter { 3367 private LayoutInflater mInflater = (LayoutInflater) mTextView.getContext(). 3368 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 3369 3370 @Override 3371 public int getCount() { 3372 return mNumberOfSuggestions; 3373 } 3374 3375 @Override 3376 public Object getItem(int position) { 3377 return mSuggestionInfos[position]; 3378 } 3379 3380 @Override 3381 public long getItemId(int position) { 3382 return position; 3383 } 3384 3385 @Override 3386 public View getView(int position, View convertView, ViewGroup parent) { 3387 TextView textView = (TextView) convertView; 3388 3389 if (textView == null) { 3390 textView = (TextView) mInflater.inflate(mTextView.mTextEditSuggestionItemLayout, 3391 parent, false); 3392 } 3393 3394 final SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 3395 textView.setText(suggestionInfo.mText); 3396 return textView; 3397 } 3398 } 3399 3400 @VisibleForTesting 3401 public ViewGroup getContentViewForTesting() { 3402 return mContentView; 3403 } 3404 3405 @Override 3406 public void show() { 3407 if (!(mTextView.getText() instanceof Editable)) return; 3408 if (extractedTextModeWillBeStarted()) { 3409 return; 3410 } 3411 3412 if (updateSuggestions()) { 3413 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 3414 mTextView.setCursorVisible(false); 3415 mIsShowingUp = true; 3416 super.show(); 3417 } 3418 } 3419 3420 @Override 3421 protected void measureContent() { 3422 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3423 final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec( 3424 displayMetrics.widthPixels, View.MeasureSpec.AT_MOST); 3425 final int verticalMeasure = View.MeasureSpec.makeMeasureSpec( 3426 displayMetrics.heightPixels, View.MeasureSpec.AT_MOST); 3427 3428 int width = 0; 3429 View view = null; 3430 for (int i = 0; i < mNumberOfSuggestions; i++) { 3431 view = mSuggestionsAdapter.getView(i, view, mContentView); 3432 view.getLayoutParams().width = LayoutParams.WRAP_CONTENT; 3433 view.measure(horizontalMeasure, verticalMeasure); 3434 width = Math.max(width, view.getMeasuredWidth()); 3435 } 3436 3437 if (mAddToDictionaryButton.getVisibility() != View.GONE) { 3438 mAddToDictionaryButton.measure(horizontalMeasure, verticalMeasure); 3439 width = Math.max(width, mAddToDictionaryButton.getMeasuredWidth()); 3440 } 3441 3442 mDeleteButton.measure(horizontalMeasure, verticalMeasure); 3443 width = Math.max(width, mDeleteButton.getMeasuredWidth()); 3444 3445 width += mContainerMarginWidth; 3446 3447 // Enforce the width based on actual text widths 3448 mContentView.measure( 3449 View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY), 3450 verticalMeasure); 3451 3452 Drawable popupBackground = mPopupWindow.getBackground(); 3453 if (popupBackground != null) { 3454 if (mTempRect == null) mTempRect = new Rect(); 3455 popupBackground.getPadding(mTempRect); 3456 width += mTempRect.left + mTempRect.right; 3457 } 3458 mSuggestionListView.getLayoutParams().width = width; 3459 mPopupWindow.setWidth(width); 3460 } 3461 3462 @Override 3463 protected int getTextOffset() { 3464 return (mTextView.getSelectionStart() + mTextView.getSelectionStart()) / 2; 3465 } 3466 3467 @Override 3468 protected int getVerticalLocalPosition(int line) { 3469 return mTextView.getLayout().getLineBottom(line) - mContainerMarginTop; 3470 } 3471 3472 @Override 3473 protected int clipVertically(int positionY) { 3474 final int height = mContentView.getMeasuredHeight(); 3475 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3476 return Math.min(positionY, displayMetrics.heightPixels - height); 3477 } 3478 3479 private void hideWithCleanUp() { 3480 for (final SuggestionInfo info : mSuggestionInfos) { 3481 info.clear(); 3482 } 3483 mMisspelledSpanInfo.clear(); 3484 hide(); 3485 } 3486 3487 private boolean updateSuggestions() { 3488 Spannable spannable = (Spannable) mTextView.getText(); 3489 mNumberOfSuggestions = 3490 mSuggestionHelper.getSuggestionInfo(mSuggestionInfos, mMisspelledSpanInfo); 3491 if (mNumberOfSuggestions == 0 && mMisspelledSpanInfo.mSuggestionSpan == null) { 3492 return false; 3493 } 3494 3495 int spanUnionStart = mTextView.getText().length(); 3496 int spanUnionEnd = 0; 3497 3498 for (int i = 0; i < mNumberOfSuggestions; i++) { 3499 final SuggestionSpanInfo spanInfo = mSuggestionInfos[i].mSuggestionSpanInfo; 3500 spanUnionStart = Math.min(spanUnionStart, spanInfo.mSpanStart); 3501 spanUnionEnd = Math.max(spanUnionEnd, spanInfo.mSpanEnd); 3502 } 3503 if (mMisspelledSpanInfo.mSuggestionSpan != null) { 3504 spanUnionStart = Math.min(spanUnionStart, mMisspelledSpanInfo.mSpanStart); 3505 spanUnionEnd = Math.max(spanUnionEnd, mMisspelledSpanInfo.mSpanEnd); 3506 } 3507 3508 for (int i = 0; i < mNumberOfSuggestions; i++) { 3509 highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd); 3510 } 3511 3512 // Make "Add to dictionary" item visible if there is a span with the misspelled flag 3513 int addToDictionaryButtonVisibility = View.GONE; 3514 if (mMisspelledSpanInfo.mSuggestionSpan != null) { 3515 if (mMisspelledSpanInfo.mSpanStart >= 0 3516 && mMisspelledSpanInfo.mSpanEnd > mMisspelledSpanInfo.mSpanStart) { 3517 addToDictionaryButtonVisibility = View.VISIBLE; 3518 } 3519 } 3520 mAddToDictionaryButton.setVisibility(addToDictionaryButtonVisibility); 3521 3522 if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan(); 3523 final int underlineColor; 3524 if (mNumberOfSuggestions != 0) { 3525 underlineColor = 3526 mSuggestionInfos[0].mSuggestionSpanInfo.mSuggestionSpan.getUnderlineColor(); 3527 } else { 3528 underlineColor = mMisspelledSpanInfo.mSuggestionSpan.getUnderlineColor(); 3529 } 3530 3531 if (underlineColor == 0) { 3532 // Fallback on the default highlight color when the first span does not provide one 3533 mSuggestionRangeSpan.setBackgroundColor(mTextView.mHighlightColor); 3534 } else { 3535 final float BACKGROUND_TRANSPARENCY = 0.4f; 3536 final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY); 3537 mSuggestionRangeSpan.setBackgroundColor( 3538 (underlineColor & 0x00FFFFFF) + (newAlpha << 24)); 3539 } 3540 spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd, 3541 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 3542 3543 mSuggestionsAdapter.notifyDataSetChanged(); 3544 return true; 3545 } 3546 3547 private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart, 3548 int unionEnd) { 3549 final Spannable text = (Spannable) mTextView.getText(); 3550 final int spanStart = suggestionInfo.mSuggestionSpanInfo.mSpanStart; 3551 final int spanEnd = suggestionInfo.mSuggestionSpanInfo.mSpanEnd; 3552 3553 // Adjust the start/end of the suggestion span 3554 suggestionInfo.mSuggestionStart = spanStart - unionStart; 3555 suggestionInfo.mSuggestionEnd = suggestionInfo.mSuggestionStart 3556 + suggestionInfo.mText.length(); 3557 3558 suggestionInfo.mText.setSpan(mHighlightSpan, 0, suggestionInfo.mText.length(), 3559 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 3560 3561 // Add the text before and after the span. 3562 final String textAsString = text.toString(); 3563 suggestionInfo.mText.insert(0, textAsString.substring(unionStart, spanStart)); 3564 suggestionInfo.mText.append(textAsString.substring(spanEnd, unionEnd)); 3565 } 3566 3567 @Override 3568 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 3569 SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 3570 replaceWithSuggestion(suggestionInfo); 3571 hideWithCleanUp(); 3572 } 3573 } 3574 3575 /** 3576 * An ActionMode Callback class that is used to provide actions while in text insertion or 3577 * selection mode. 3578 * 3579 * The default callback provides a subset of Select All, Cut, Copy, Paste, Share and Replace 3580 * actions, depending on which of these this TextView supports and the current selection. 3581 */ 3582 private class TextActionModeCallback extends ActionMode.Callback2 { 3583 private final Path mSelectionPath = new Path(); 3584 private final RectF mSelectionBounds = new RectF(); 3585 private final boolean mHasSelection; 3586 3587 private int mHandleHeight; 3588 3589 public TextActionModeCallback(boolean hasSelection) { 3590 mHasSelection = hasSelection; 3591 if (mHasSelection) { 3592 SelectionModifierCursorController selectionController = getSelectionController(); 3593 if (selectionController.mStartHandle == null) { 3594 // As these are for initializing selectionController, hide() must be called. 3595 selectionController.initDrawables(); 3596 selectionController.initHandles(); 3597 selectionController.hide(); 3598 } 3599 mHandleHeight = Math.max( 3600 mSelectHandleLeft.getMinimumHeight(), 3601 mSelectHandleRight.getMinimumHeight()); 3602 } else { 3603 InsertionPointCursorController insertionController = getInsertionController(); 3604 if (insertionController != null) { 3605 insertionController.getHandle(); 3606 mHandleHeight = mSelectHandleCenter.getMinimumHeight(); 3607 } 3608 } 3609 } 3610 3611 @Override 3612 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 3613 mode.setTitle(null); 3614 mode.setSubtitle(null); 3615 mode.setTitleOptionalHint(true); 3616 populateMenuWithItems(menu); 3617 3618 Callback customCallback = getCustomCallback(); 3619 if (customCallback != null) { 3620 if (!customCallback.onCreateActionMode(mode, menu)) { 3621 // The custom mode can choose to cancel the action mode, dismiss selection. 3622 Selection.setSelection((Spannable) mTextView.getText(), 3623 mTextView.getSelectionEnd()); 3624 return false; 3625 } 3626 } 3627 3628 if (mTextView.canProcessText()) { 3629 mProcessTextIntentActionsHandler.onInitializeMenu(menu); 3630 } 3631 3632 if (menu.hasVisibleItems() || mode.getCustomView() != null) { 3633 return true; 3634 } else { 3635 return false; 3636 } 3637 } 3638 3639 private Callback getCustomCallback() { 3640 return mHasSelection 3641 ? mCustomSelectionActionModeCallback 3642 : mCustomInsertionActionModeCallback; 3643 } 3644 3645 private void populateMenuWithItems(Menu menu) { 3646 if (mTextView.canCut()) { 3647 menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, 3648 com.android.internal.R.string.cut). 3649 setAlphabeticShortcut('x'). 3650 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3651 } 3652 3653 if (mTextView.canCopy()) { 3654 menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, 3655 com.android.internal.R.string.copy). 3656 setAlphabeticShortcut('c'). 3657 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3658 } 3659 3660 if (mTextView.canPaste()) { 3661 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, 3662 com.android.internal.R.string.paste). 3663 setAlphabeticShortcut('v'). 3664 setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3665 } 3666 3667 if (mTextView.canShare()) { 3668 menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, 3669 com.android.internal.R.string.share). 3670 setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3671 } 3672 3673 updateSelectAllItem(menu); 3674 updateReplaceItem(menu); 3675 } 3676 3677 @Override 3678 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 3679 updateSelectAllItem(menu); 3680 updateReplaceItem(menu); 3681 3682 Callback customCallback = getCustomCallback(); 3683 if (customCallback != null) { 3684 return customCallback.onPrepareActionMode(mode, menu); 3685 } 3686 return true; 3687 } 3688 3689 private void updateSelectAllItem(Menu menu) { 3690 boolean canSelectAll = mTextView.canSelectAllText(); 3691 boolean selectAllItemExists = menu.findItem(TextView.ID_SELECT_ALL) != null; 3692 if (canSelectAll && !selectAllItemExists) { 3693 menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, 3694 com.android.internal.R.string.selectAll) 3695 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3696 } else if (!canSelectAll && selectAllItemExists) { 3697 menu.removeItem(TextView.ID_SELECT_ALL); 3698 } 3699 } 3700 3701 private void updateReplaceItem(Menu menu) { 3702 boolean canReplace = mTextView.isSuggestionsEnabled() && shouldOfferToShowSuggestions(); 3703 boolean replaceItemExists = menu.findItem(TextView.ID_REPLACE) != null; 3704 if (canReplace && !replaceItemExists) { 3705 menu.add(Menu.NONE, TextView.ID_REPLACE, MENU_ITEM_ORDER_REPLACE, 3706 com.android.internal.R.string.replace) 3707 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3708 } else if (!canReplace && replaceItemExists) { 3709 menu.removeItem(TextView.ID_REPLACE); 3710 } 3711 } 3712 3713 @Override 3714 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 3715 if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { 3716 return true; 3717 } 3718 Callback customCallback = getCustomCallback(); 3719 if (customCallback != null && customCallback.onActionItemClicked(mode, item)) { 3720 return true; 3721 } 3722 return mTextView.onTextContextMenuItem(item.getItemId()); 3723 } 3724 3725 @Override 3726 public void onDestroyActionMode(ActionMode mode) { 3727 // Clear mTextActionMode not to recursively destroy action mode by clearing selection. 3728 mTextActionMode = null; 3729 Callback customCallback = getCustomCallback(); 3730 if (customCallback != null) { 3731 customCallback.onDestroyActionMode(mode); 3732 } 3733 3734 if (!mPreserveSelection) { 3735 /* 3736 * Leave current selection when we tentatively destroy action mode for the 3737 * selection. If we're detaching from a window, we'll bring back the selection 3738 * mode when (if) we get reattached. 3739 */ 3740 Selection.setSelection((Spannable) mTextView.getText(), 3741 mTextView.getSelectionEnd()); 3742 } 3743 3744 if (mSelectionModifierCursorController != null) { 3745 mSelectionModifierCursorController.hide(); 3746 } 3747 } 3748 3749 @Override 3750 public void onGetContentRect(ActionMode mode, View view, Rect outRect) { 3751 if (!view.equals(mTextView) || mTextView.getLayout() == null) { 3752 super.onGetContentRect(mode, view, outRect); 3753 return; 3754 } 3755 if (mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 3756 // We have a selection. 3757 mSelectionPath.reset(); 3758 mTextView.getLayout().getSelectionPath( 3759 mTextView.getSelectionStart(), mTextView.getSelectionEnd(), mSelectionPath); 3760 mSelectionPath.computeBounds(mSelectionBounds, true); 3761 mSelectionBounds.bottom += mHandleHeight; 3762 } else if (mCursorCount == 2) { 3763 // We have a split cursor. In this case, we take the rectangle that includes both 3764 // parts of the cursor to ensure we don't obscure either of them. 3765 Rect firstCursorBounds = mCursorDrawable[0].getBounds(); 3766 Rect secondCursorBounds = mCursorDrawable[1].getBounds(); 3767 mSelectionBounds.set( 3768 Math.min(firstCursorBounds.left, secondCursorBounds.left), 3769 Math.min(firstCursorBounds.top, secondCursorBounds.top), 3770 Math.max(firstCursorBounds.right, secondCursorBounds.right), 3771 Math.max(firstCursorBounds.bottom, secondCursorBounds.bottom) 3772 + mHandleHeight); 3773 } else { 3774 // We have a single cursor. 3775 Layout layout = getActiveLayout(); 3776 int line = layout.getLineForOffset(mTextView.getSelectionStart()); 3777 float primaryHorizontal = 3778 layout.getPrimaryHorizontal(mTextView.getSelectionStart()); 3779 mSelectionBounds.set( 3780 primaryHorizontal, 3781 layout.getLineTop(line), 3782 primaryHorizontal, 3783 layout.getLineTop(line + 1) + mHandleHeight); 3784 } 3785 // Take TextView's padding and scroll into account. 3786 int textHorizontalOffset = mTextView.viewportToContentHorizontalOffset(); 3787 int textVerticalOffset = mTextView.viewportToContentVerticalOffset(); 3788 outRect.set( 3789 (int) Math.floor(mSelectionBounds.left + textHorizontalOffset), 3790 (int) Math.floor(mSelectionBounds.top + textVerticalOffset), 3791 (int) Math.ceil(mSelectionBounds.right + textHorizontalOffset), 3792 (int) Math.ceil(mSelectionBounds.bottom + textVerticalOffset)); 3793 } 3794 } 3795 3796 /** 3797 * A listener to call {@link InputMethodManager#updateCursorAnchorInfo(View, CursorAnchorInfo)} 3798 * while the input method is requesting the cursor/anchor position. Does nothing as long as 3799 * {@link InputMethodManager#isWatchingCursor(View)} returns false. 3800 */ 3801 private final class CursorAnchorInfoNotifier implements TextViewPositionListener { 3802 final CursorAnchorInfo.Builder mSelectionInfoBuilder = new CursorAnchorInfo.Builder(); 3803 final int[] mTmpIntOffset = new int[2]; 3804 final Matrix mViewToScreenMatrix = new Matrix(); 3805 3806 @Override 3807 public void updatePosition(int parentPositionX, int parentPositionY, 3808 boolean parentPositionChanged, boolean parentScrolled) { 3809 final InputMethodState ims = mInputMethodState; 3810 if (ims == null || ims.mBatchEditNesting > 0) { 3811 return; 3812 } 3813 final InputMethodManager imm = InputMethodManager.peekInstance(); 3814 if (null == imm) { 3815 return; 3816 } 3817 if (!imm.isActive(mTextView)) { 3818 return; 3819 } 3820 // Skip if the IME has not requested the cursor/anchor position. 3821 if (!imm.isCursorAnchorInfoEnabled()) { 3822 return; 3823 } 3824 Layout layout = mTextView.getLayout(); 3825 if (layout == null) { 3826 return; 3827 } 3828 3829 final CursorAnchorInfo.Builder builder = mSelectionInfoBuilder; 3830 builder.reset(); 3831 3832 final int selectionStart = mTextView.getSelectionStart(); 3833 builder.setSelectionRange(selectionStart, mTextView.getSelectionEnd()); 3834 3835 // Construct transformation matrix from view local coordinates to screen coordinates. 3836 mViewToScreenMatrix.set(mTextView.getMatrix()); 3837 mTextView.getLocationOnScreen(mTmpIntOffset); 3838 mViewToScreenMatrix.postTranslate(mTmpIntOffset[0], mTmpIntOffset[1]); 3839 builder.setMatrix(mViewToScreenMatrix); 3840 3841 final float viewportToContentHorizontalOffset = 3842 mTextView.viewportToContentHorizontalOffset(); 3843 final float viewportToContentVerticalOffset = 3844 mTextView.viewportToContentVerticalOffset(); 3845 3846 final CharSequence text = mTextView.getText(); 3847 if (text instanceof Spannable) { 3848 final Spannable sp = (Spannable) text; 3849 int composingTextStart = EditableInputConnection.getComposingSpanStart(sp); 3850 int composingTextEnd = EditableInputConnection.getComposingSpanEnd(sp); 3851 if (composingTextEnd < composingTextStart) { 3852 final int temp = composingTextEnd; 3853 composingTextEnd = composingTextStart; 3854 composingTextStart = temp; 3855 } 3856 final boolean hasComposingText = 3857 (0 <= composingTextStart) && (composingTextStart < composingTextEnd); 3858 if (hasComposingText) { 3859 final CharSequence composingText = text.subSequence(composingTextStart, 3860 composingTextEnd); 3861 builder.setComposingText(composingTextStart, composingText); 3862 3863 final int minLine = layout.getLineForOffset(composingTextStart); 3864 final int maxLine = layout.getLineForOffset(composingTextEnd - 1); 3865 for (int line = minLine; line <= maxLine; ++line) { 3866 final int lineStart = layout.getLineStart(line); 3867 final int lineEnd = layout.getLineEnd(line); 3868 final int offsetStart = Math.max(lineStart, composingTextStart); 3869 final int offsetEnd = Math.min(lineEnd, composingTextEnd); 3870 final boolean ltrLine = 3871 layout.getParagraphDirection(line) == Layout.DIR_LEFT_TO_RIGHT; 3872 final float[] widths = new float[offsetEnd - offsetStart]; 3873 layout.getPaint().getTextWidths(text, offsetStart, offsetEnd, widths); 3874 final float top = layout.getLineTop(line); 3875 final float bottom = layout.getLineBottom(line); 3876 for (int offset = offsetStart; offset < offsetEnd; ++offset) { 3877 final float charWidth = widths[offset - offsetStart]; 3878 final boolean isRtl = layout.isRtlCharAt(offset); 3879 final float primary = layout.getPrimaryHorizontal(offset); 3880 final float secondary = layout.getSecondaryHorizontal(offset); 3881 // TODO: This doesn't work perfectly for text with custom styles and 3882 // TAB chars. 3883 final float left; 3884 final float right; 3885 if (ltrLine) { 3886 if (isRtl) { 3887 left = secondary - charWidth; 3888 right = secondary; 3889 } else { 3890 left = primary; 3891 right = primary + charWidth; 3892 } 3893 } else { 3894 if (!isRtl) { 3895 left = secondary; 3896 right = secondary + charWidth; 3897 } else { 3898 left = primary - charWidth; 3899 right = primary; 3900 } 3901 } 3902 // TODO: Check top-right and bottom-left as well. 3903 final float localLeft = left + viewportToContentHorizontalOffset; 3904 final float localRight = right + viewportToContentHorizontalOffset; 3905 final float localTop = top + viewportToContentVerticalOffset; 3906 final float localBottom = bottom + viewportToContentVerticalOffset; 3907 final boolean isTopLeftVisible = isPositionVisible(localLeft, localTop); 3908 final boolean isBottomRightVisible = 3909 isPositionVisible(localRight, localBottom); 3910 int characterBoundsFlags = 0; 3911 if (isTopLeftVisible || isBottomRightVisible) { 3912 characterBoundsFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; 3913 } 3914 if (!isTopLeftVisible || !isBottomRightVisible) { 3915 characterBoundsFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; 3916 } 3917 if (isRtl) { 3918 characterBoundsFlags |= CursorAnchorInfo.FLAG_IS_RTL; 3919 } 3920 // Here offset is the index in Java chars. 3921 builder.addCharacterBounds(offset, localLeft, localTop, localRight, 3922 localBottom, characterBoundsFlags); 3923 } 3924 } 3925 } 3926 } 3927 3928 // Treat selectionStart as the insertion point. 3929 if (0 <= selectionStart) { 3930 final int offset = selectionStart; 3931 final int line = layout.getLineForOffset(offset); 3932 final float insertionMarkerX = layout.getPrimaryHorizontal(offset) 3933 + viewportToContentHorizontalOffset; 3934 final float insertionMarkerTop = layout.getLineTop(line) 3935 + viewportToContentVerticalOffset; 3936 final float insertionMarkerBaseline = layout.getLineBaseline(line) 3937 + viewportToContentVerticalOffset; 3938 final float insertionMarkerBottom = layout.getLineBottom(line) 3939 + viewportToContentVerticalOffset; 3940 final boolean isTopVisible = 3941 isPositionVisible(insertionMarkerX, insertionMarkerTop); 3942 final boolean isBottomVisible = 3943 isPositionVisible(insertionMarkerX, insertionMarkerBottom); 3944 int insertionMarkerFlags = 0; 3945 if (isTopVisible || isBottomVisible) { 3946 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; 3947 } 3948 if (!isTopVisible || !isBottomVisible) { 3949 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; 3950 } 3951 if (layout.isRtlCharAt(offset)) { 3952 insertionMarkerFlags |= CursorAnchorInfo.FLAG_IS_RTL; 3953 } 3954 builder.setInsertionMarkerLocation(insertionMarkerX, insertionMarkerTop, 3955 insertionMarkerBaseline, insertionMarkerBottom, insertionMarkerFlags); 3956 } 3957 3958 imm.updateCursorAnchorInfo(mTextView, builder.build()); 3959 } 3960 } 3961 3962 @VisibleForTesting 3963 public abstract class HandleView extends View implements TextViewPositionListener { 3964 protected Drawable mDrawable; 3965 protected Drawable mDrawableLtr; 3966 protected Drawable mDrawableRtl; 3967 private final PopupWindow mContainer; 3968 // Position with respect to the parent TextView 3969 private int mPositionX, mPositionY; 3970 private boolean mIsDragging; 3971 // Offset from touch position to mPosition 3972 private float mTouchToWindowOffsetX, mTouchToWindowOffsetY; 3973 protected int mHotspotX; 3974 protected int mHorizontalGravity; 3975 // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up 3976 private float mTouchOffsetY; 3977 // Where the touch position should be on the handle to ensure a maximum cursor visibility 3978 private float mIdealVerticalOffset; 3979 // Parent's (TextView) previous position in window 3980 private int mLastParentX, mLastParentY; 3981 // Previous text character offset 3982 protected int mPreviousOffset = -1; 3983 // Previous text character offset 3984 private boolean mPositionHasChanged = true; 3985 // Minimum touch target size for handles 3986 private int mMinSize; 3987 // Indicates the line of text that the handle is on. 3988 protected int mPrevLine = UNSET_LINE; 3989 // Indicates the line of text that the user was touching. This can differ from mPrevLine 3990 // when selecting text when the handles jump to the end / start of words which may be on 3991 // a different line. 3992 protected int mPreviousLineTouched = UNSET_LINE; 3993 3994 private HandleView(Drawable drawableLtr, Drawable drawableRtl, final int id) { 3995 super(mTextView.getContext()); 3996 setId(id); 3997 mContainer = new PopupWindow(mTextView.getContext(), null, 3998 com.android.internal.R.attr.textSelectHandleWindowStyle); 3999 mContainer.setSplitTouchEnabled(true); 4000 mContainer.setClippingEnabled(false); 4001 mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 4002 mContainer.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 4003 mContainer.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 4004 mContainer.setContentView(this); 4005 4006 mDrawableLtr = drawableLtr; 4007 mDrawableRtl = drawableRtl; 4008 mMinSize = mTextView.getContext().getResources().getDimensionPixelSize( 4009 com.android.internal.R.dimen.text_handle_min_size); 4010 4011 updateDrawable(); 4012 4013 final int handleHeight = getPreferredHeight(); 4014 mTouchOffsetY = -0.3f * handleHeight; 4015 mIdealVerticalOffset = 0.7f * handleHeight; 4016 } 4017 4018 public float getIdealVerticalOffset() { 4019 return mIdealVerticalOffset; 4020 } 4021 4022 protected void updateDrawable() { 4023 if (mIsDragging) { 4024 // Don't update drawable during dragging. 4025 return; 4026 } 4027 final int offset = getCurrentCursorOffset(); 4028 final boolean isRtlCharAtOffset = mTextView.getLayout().isRtlCharAt(offset); 4029 final Drawable oldDrawable = mDrawable; 4030 mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr; 4031 mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset); 4032 mHorizontalGravity = getHorizontalGravity(isRtlCharAtOffset); 4033 final Layout layout = mTextView.getLayout(); 4034 if (layout != null && oldDrawable != mDrawable && isShowing()) { 4035 // Update popup window position. 4036 mPositionX = getCursorHorizontalPosition(layout, offset) - mHotspotX - 4037 getHorizontalOffset() + getCursorOffset(); 4038 mPositionX += mTextView.viewportToContentHorizontalOffset(); 4039 mPositionHasChanged = true; 4040 updatePosition(mLastParentX, mLastParentY, false, false); 4041 postInvalidate(); 4042 } 4043 } 4044 4045 protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun); 4046 protected abstract int getHorizontalGravity(boolean isRtlRun); 4047 4048 // Touch-up filter: number of previous positions remembered 4049 private static final int HISTORY_SIZE = 5; 4050 private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150; 4051 private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350; 4052 private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; 4053 private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; 4054 private int mPreviousOffsetIndex = 0; 4055 private int mNumberPreviousOffsets = 0; 4056 4057 private void startTouchUpFilter(int offset) { 4058 mNumberPreviousOffsets = 0; 4059 addPositionToTouchUpFilter(offset); 4060 } 4061 4062 private void addPositionToTouchUpFilter(int offset) { 4063 mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; 4064 mPreviousOffsets[mPreviousOffsetIndex] = offset; 4065 mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); 4066 mNumberPreviousOffsets++; 4067 } 4068 4069 private void filterOnTouchUp() { 4070 final long now = SystemClock.uptimeMillis(); 4071 int i = 0; 4072 int index = mPreviousOffsetIndex; 4073 final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); 4074 while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) { 4075 i++; 4076 index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; 4077 } 4078 4079 if (i > 0 && i < iMax && 4080 (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) { 4081 positionAtCursorOffset(mPreviousOffsets[index], false); 4082 } 4083 } 4084 4085 public boolean offsetHasBeenChanged() { 4086 return mNumberPreviousOffsets > 1; 4087 } 4088 4089 @Override 4090 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4091 setMeasuredDimension(getPreferredWidth(), getPreferredHeight()); 4092 } 4093 4094 private int getPreferredWidth() { 4095 return Math.max(mDrawable.getIntrinsicWidth(), mMinSize); 4096 } 4097 4098 private int getPreferredHeight() { 4099 return Math.max(mDrawable.getIntrinsicHeight(), mMinSize); 4100 } 4101 4102 public void show() { 4103 if (isShowing()) return; 4104 4105 getPositionListener().addSubscriber(this, true /* local position may change */); 4106 4107 // Make sure the offset is always considered new, even when focusing at same position 4108 mPreviousOffset = -1; 4109 positionAtCursorOffset(getCurrentCursorOffset(), false); 4110 } 4111 4112 protected void dismiss() { 4113 mIsDragging = false; 4114 mContainer.dismiss(); 4115 onDetached(); 4116 } 4117 4118 public void hide() { 4119 dismiss(); 4120 4121 getPositionListener().removeSubscriber(this); 4122 } 4123 4124 public boolean isShowing() { 4125 return mContainer.isShowing(); 4126 } 4127 4128 private boolean isVisible() { 4129 // Always show a dragging handle. 4130 if (mIsDragging) { 4131 return true; 4132 } 4133 4134 if (mTextView.isInBatchEditMode()) { 4135 return false; 4136 } 4137 4138 return isPositionVisible(mPositionX + mHotspotX + getHorizontalOffset(), mPositionY); 4139 } 4140 4141 public abstract int getCurrentCursorOffset(); 4142 4143 protected abstract void updateSelection(int offset); 4144 4145 public abstract void updatePosition(float x, float y); 4146 4147 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 4148 // A HandleView relies on the layout, which may be nulled by external methods 4149 Layout layout = mTextView.getLayout(); 4150 if (layout == null) { 4151 // Will update controllers' state, hiding them and stopping selection mode if needed 4152 prepareCursorControllers(); 4153 return; 4154 } 4155 layout = getActiveLayout(); 4156 4157 boolean offsetChanged = offset != mPreviousOffset; 4158 if (offsetChanged || parentScrolled) { 4159 if (offsetChanged) { 4160 updateSelection(offset); 4161 addPositionToTouchUpFilter(offset); 4162 } 4163 final int line = layout.getLineForOffset(offset); 4164 mPrevLine = line; 4165 4166 mPositionX = getCursorHorizontalPosition(layout, offset) - mHotspotX - 4167 getHorizontalOffset() + getCursorOffset(); 4168 mPositionY = layout.getLineBottom(line); 4169 4170 // Take TextView's padding and scroll into account. 4171 mPositionX += mTextView.viewportToContentHorizontalOffset(); 4172 mPositionY += mTextView.viewportToContentVerticalOffset(); 4173 4174 mPreviousOffset = offset; 4175 mPositionHasChanged = true; 4176 } 4177 } 4178 4179 /** 4180 * Return the clamped horizontal position for the first cursor. 4181 * 4182 * @param layout Text layout. 4183 * @param offset Character offset for the cursor. 4184 * @return The clamped horizontal position for the cursor. 4185 */ 4186 int getCursorHorizontalPosition(Layout layout, int offset) { 4187 return (int) (layout.getPrimaryHorizontal(offset) - 0.5f); 4188 } 4189 4190 public void updatePosition(int parentPositionX, int parentPositionY, 4191 boolean parentPositionChanged, boolean parentScrolled) { 4192 positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled); 4193 if (parentPositionChanged || mPositionHasChanged) { 4194 if (mIsDragging) { 4195 // Update touchToWindow offset in case of parent scrolling while dragging 4196 if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) { 4197 mTouchToWindowOffsetX += parentPositionX - mLastParentX; 4198 mTouchToWindowOffsetY += parentPositionY - mLastParentY; 4199 mLastParentX = parentPositionX; 4200 mLastParentY = parentPositionY; 4201 } 4202 4203 onHandleMoved(); 4204 } 4205 4206 if (isVisible()) { 4207 // Transform to the window coordinates to follow the view tranformation. 4208 final int[] pts = { mPositionX + mHotspotX + getHorizontalOffset(), mPositionY}; 4209 mTextView.transformFromViewToWindowSpace(pts); 4210 pts[0] -= mHotspotX + getHorizontalOffset(); 4211 4212 if (isShowing()) { 4213 mContainer.update(pts[0], pts[1], -1, -1); 4214 } else { 4215 mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, pts[0], pts[1]); 4216 } 4217 } else { 4218 if (isShowing()) { 4219 dismiss(); 4220 } 4221 } 4222 4223 mPositionHasChanged = false; 4224 } 4225 } 4226 4227 @Override 4228 protected void onDraw(Canvas c) { 4229 final int drawWidth = mDrawable.getIntrinsicWidth(); 4230 final int left = getHorizontalOffset(); 4231 4232 mDrawable.setBounds(left, 0, left + drawWidth, mDrawable.getIntrinsicHeight()); 4233 mDrawable.draw(c); 4234 } 4235 4236 private int getHorizontalOffset() { 4237 final int width = getPreferredWidth(); 4238 final int drawWidth = mDrawable.getIntrinsicWidth(); 4239 final int left; 4240 switch (mHorizontalGravity) { 4241 case Gravity.LEFT: 4242 left = 0; 4243 break; 4244 default: 4245 case Gravity.CENTER: 4246 left = (width - drawWidth) / 2; 4247 break; 4248 case Gravity.RIGHT: 4249 left = width - drawWidth; 4250 break; 4251 } 4252 return left; 4253 } 4254 4255 protected int getCursorOffset() { 4256 return 0; 4257 } 4258 4259 @Override 4260 public boolean onTouchEvent(MotionEvent ev) { 4261 updateFloatingToolbarVisibility(ev); 4262 4263 switch (ev.getActionMasked()) { 4264 case MotionEvent.ACTION_DOWN: { 4265 startTouchUpFilter(getCurrentCursorOffset()); 4266 mTouchToWindowOffsetX = ev.getRawX() - mPositionX; 4267 mTouchToWindowOffsetY = ev.getRawY() - mPositionY; 4268 4269 final PositionListener positionListener = getPositionListener(); 4270 mLastParentX = positionListener.getPositionX(); 4271 mLastParentY = positionListener.getPositionY(); 4272 mIsDragging = true; 4273 mPreviousLineTouched = UNSET_LINE; 4274 break; 4275 } 4276 4277 case MotionEvent.ACTION_MOVE: { 4278 final float rawX = ev.getRawX(); 4279 final float rawY = ev.getRawY(); 4280 4281 // Vertical hysteresis: vertical down movement tends to snap to ideal offset 4282 final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY; 4283 final float currentVerticalOffset = rawY - mPositionY - mLastParentY; 4284 float newVerticalOffset; 4285 if (previousVerticalOffset < mIdealVerticalOffset) { 4286 newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset); 4287 newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset); 4288 } else { 4289 newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset); 4290 newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset); 4291 } 4292 mTouchToWindowOffsetY = newVerticalOffset + mLastParentY; 4293 4294 final float newPosX = 4295 rawX - mTouchToWindowOffsetX + mHotspotX + getHorizontalOffset(); 4296 final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY; 4297 4298 updatePosition(newPosX, newPosY); 4299 break; 4300 } 4301 4302 case MotionEvent.ACTION_UP: 4303 filterOnTouchUp(); 4304 mIsDragging = false; 4305 updateDrawable(); 4306 break; 4307 4308 case MotionEvent.ACTION_CANCEL: 4309 mIsDragging = false; 4310 updateDrawable(); 4311 break; 4312 } 4313 return true; 4314 } 4315 4316 public boolean isDragging() { 4317 return mIsDragging; 4318 } 4319 4320 void onHandleMoved() {} 4321 4322 public void onDetached() {} 4323 } 4324 4325 /** 4326 * Returns the active layout (hint or text layout). Note that the text layout can be null. 4327 */ 4328 private Layout getActiveLayout() { 4329 Layout layout = mTextView.getLayout(); 4330 Layout hintLayout = mTextView.getHintLayout(); 4331 if (TextUtils.isEmpty(layout.getText()) && hintLayout != null && 4332 !TextUtils.isEmpty(hintLayout.getText())) { 4333 layout = hintLayout; 4334 } 4335 return layout; 4336 } 4337 4338 private class InsertionHandleView extends HandleView { 4339 private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000; 4340 private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds 4341 4342 // Used to detect taps on the insertion handle, which will affect the insertion action mode 4343 private float mDownPositionX, mDownPositionY; 4344 private Runnable mHider; 4345 4346 public InsertionHandleView(Drawable drawable) { 4347 super(drawable, drawable, com.android.internal.R.id.insertion_handle); 4348 } 4349 4350 @Override 4351 public void show() { 4352 super.show(); 4353 4354 final long durationSinceCutOrCopy = 4355 SystemClock.uptimeMillis() - TextView.sLastCutCopyOrTextChangedTime; 4356 4357 // Cancel the single tap delayed runnable. 4358 if (mInsertionActionModeRunnable != null 4359 && ((mTapState == TAP_STATE_DOUBLE_TAP) 4360 || (mTapState == TAP_STATE_TRIPLE_CLICK) 4361 || isCursorInsideEasyCorrectionSpan())) { 4362 mTextView.removeCallbacks(mInsertionActionModeRunnable); 4363 } 4364 4365 // Prepare and schedule the single tap runnable to run exactly after the double tap 4366 // timeout has passed. 4367 if ((mTapState != TAP_STATE_DOUBLE_TAP) && (mTapState != TAP_STATE_TRIPLE_CLICK) 4368 && !isCursorInsideEasyCorrectionSpan() 4369 && (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION)) { 4370 if (mTextActionMode == null) { 4371 if (mInsertionActionModeRunnable == null) { 4372 mInsertionActionModeRunnable = new Runnable() { 4373 @Override 4374 public void run() { 4375 startInsertionActionMode(); 4376 } 4377 }; 4378 } 4379 mTextView.postDelayed( 4380 mInsertionActionModeRunnable, 4381 ViewConfiguration.getDoubleTapTimeout() + 1); 4382 } 4383 4384 } 4385 4386 hideAfterDelay(); 4387 } 4388 4389 private void hideAfterDelay() { 4390 if (mHider == null) { 4391 mHider = new Runnable() { 4392 public void run() { 4393 hide(); 4394 } 4395 }; 4396 } else { 4397 removeHiderCallback(); 4398 } 4399 mTextView.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT); 4400 } 4401 4402 private void removeHiderCallback() { 4403 if (mHider != null) { 4404 mTextView.removeCallbacks(mHider); 4405 } 4406 } 4407 4408 @Override 4409 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 4410 return drawable.getIntrinsicWidth() / 2; 4411 } 4412 4413 @Override 4414 protected int getHorizontalGravity(boolean isRtlRun) { 4415 return Gravity.CENTER_HORIZONTAL; 4416 } 4417 4418 @Override 4419 protected int getCursorOffset() { 4420 int offset = super.getCursorOffset(); 4421 final Drawable cursor = mCursorCount > 0 ? mCursorDrawable[0] : null; 4422 if (cursor != null) { 4423 cursor.getPadding(mTempRect); 4424 offset += (cursor.getIntrinsicWidth() - mTempRect.left - mTempRect.right) / 2; 4425 } 4426 return offset; 4427 } 4428 4429 @Override 4430 int getCursorHorizontalPosition(Layout layout, int offset) { 4431 final Drawable drawable = mCursorCount > 0 ? mCursorDrawable[0] : null; 4432 if (drawable != null) { 4433 final float horizontal = layout.getPrimaryHorizontal(offset); 4434 return clampCursorHorizontalPosition(drawable, horizontal) + mTempRect.left; 4435 } 4436 return super.getCursorHorizontalPosition(layout, offset); 4437 } 4438 4439 @Override 4440 public boolean onTouchEvent(MotionEvent ev) { 4441 final boolean result = super.onTouchEvent(ev); 4442 4443 switch (ev.getActionMasked()) { 4444 case MotionEvent.ACTION_DOWN: 4445 mDownPositionX = ev.getRawX(); 4446 mDownPositionY = ev.getRawY(); 4447 break; 4448 4449 case MotionEvent.ACTION_UP: 4450 if (!offsetHasBeenChanged()) { 4451 final float deltaX = mDownPositionX - ev.getRawX(); 4452 final float deltaY = mDownPositionY - ev.getRawY(); 4453 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 4454 4455 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 4456 mTextView.getContext()); 4457 final int touchSlop = viewConfiguration.getScaledTouchSlop(); 4458 4459 if (distanceSquared < touchSlop * touchSlop) { 4460 // Tapping on the handle toggles the insertion action mode. 4461 if (mTextActionMode != null) { 4462 stopTextActionMode(); 4463 } else { 4464 startInsertionActionMode(); 4465 } 4466 } 4467 } else { 4468 if (mTextActionMode != null) { 4469 mTextActionMode.invalidateContentRect(); 4470 } 4471 } 4472 hideAfterDelay(); 4473 break; 4474 4475 case MotionEvent.ACTION_CANCEL: 4476 hideAfterDelay(); 4477 break; 4478 4479 default: 4480 break; 4481 } 4482 4483 return result; 4484 } 4485 4486 @Override 4487 public int getCurrentCursorOffset() { 4488 return mTextView.getSelectionStart(); 4489 } 4490 4491 @Override 4492 public void updateSelection(int offset) { 4493 Selection.setSelection((Spannable) mTextView.getText(), offset); 4494 } 4495 4496 @Override 4497 public void updatePosition(float x, float y) { 4498 Layout layout = mTextView.getLayout(); 4499 int offset; 4500 if (layout != null) { 4501 if (mPreviousLineTouched == UNSET_LINE) { 4502 mPreviousLineTouched = mTextView.getLineAtCoordinate(y); 4503 } 4504 int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); 4505 offset = mTextView.getOffsetAtCoordinate(currLine, x); 4506 mPreviousLineTouched = currLine; 4507 } else { 4508 offset = mTextView.getOffsetForPosition(x, y); 4509 } 4510 positionAtCursorOffset(offset, false); 4511 if (mTextActionMode != null) { 4512 mTextActionMode.invalidate(); 4513 } 4514 } 4515 4516 @Override 4517 void onHandleMoved() { 4518 super.onHandleMoved(); 4519 removeHiderCallback(); 4520 } 4521 4522 @Override 4523 public void onDetached() { 4524 super.onDetached(); 4525 removeHiderCallback(); 4526 } 4527 } 4528 4529 @Retention(RetentionPolicy.SOURCE) 4530 @IntDef({HANDLE_TYPE_SELECTION_START, HANDLE_TYPE_SELECTION_END}) 4531 public @interface HandleType {} 4532 public static final int HANDLE_TYPE_SELECTION_START = 0; 4533 public static final int HANDLE_TYPE_SELECTION_END = 1; 4534 4535 private class SelectionHandleView extends HandleView { 4536 // Indicates the handle type, selection start (HANDLE_TYPE_SELECTION_START) or selection 4537 // end (HANDLE_TYPE_SELECTION_END). 4538 @HandleType 4539 private final int mHandleType; 4540 // Indicates whether the cursor is making adjustments within a word. 4541 private boolean mInWord = false; 4542 // Difference between touch position and word boundary position. 4543 private float mTouchWordDelta; 4544 // X value of the previous updatePosition call. 4545 private float mPrevX; 4546 // Indicates if the handle has moved a boundary between LTR and RTL text. 4547 private boolean mLanguageDirectionChanged = false; 4548 // Distance from edge of horizontally scrolling text view 4549 // to use to switch to character mode. 4550 private final float mTextViewEdgeSlop; 4551 // Used to save text view location. 4552 private final int[] mTextViewLocation = new int[2]; 4553 4554 public SelectionHandleView(Drawable drawableLtr, Drawable drawableRtl, int id, 4555 @HandleType int handleType) { 4556 super(drawableLtr, drawableRtl, id); 4557 mHandleType = handleType; 4558 ViewConfiguration viewConfiguration = ViewConfiguration.get(mTextView.getContext()); 4559 mTextViewEdgeSlop = viewConfiguration.getScaledTouchSlop() * 4; 4560 } 4561 4562 private boolean isStartHandle() { 4563 return mHandleType == HANDLE_TYPE_SELECTION_START; 4564 } 4565 4566 @Override 4567 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 4568 if (isRtlRun == isStartHandle()) { 4569 return drawable.getIntrinsicWidth() / 4; 4570 } else { 4571 return (drawable.getIntrinsicWidth() * 3) / 4; 4572 } 4573 } 4574 4575 @Override 4576 protected int getHorizontalGravity(boolean isRtlRun) { 4577 return (isRtlRun == isStartHandle()) ? Gravity.LEFT : Gravity.RIGHT; 4578 } 4579 4580 @Override 4581 public int getCurrentCursorOffset() { 4582 return isStartHandle() ? mTextView.getSelectionStart() : mTextView.getSelectionEnd(); 4583 } 4584 4585 @Override 4586 protected void updateSelection(int offset) { 4587 if (isStartHandle()) { 4588 Selection.setSelection((Spannable) mTextView.getText(), offset, 4589 mTextView.getSelectionEnd()); 4590 } else { 4591 Selection.setSelection((Spannable) mTextView.getText(), 4592 mTextView.getSelectionStart(), offset); 4593 } 4594 updateDrawable(); 4595 if (mTextActionMode != null) { 4596 mTextActionMode.invalidate(); 4597 } 4598 } 4599 4600 @Override 4601 public void updatePosition(float x, float y) { 4602 final Layout layout = mTextView.getLayout(); 4603 if (layout == null) { 4604 // HandleView will deal appropriately in positionAtCursorOffset when 4605 // layout is null. 4606 positionAndAdjustForCrossingHandles(mTextView.getOffsetForPosition(x, y)); 4607 return; 4608 } 4609 4610 if (mPreviousLineTouched == UNSET_LINE) { 4611 mPreviousLineTouched = mTextView.getLineAtCoordinate(y); 4612 } 4613 4614 boolean positionCursor = false; 4615 final int anotherHandleOffset = 4616 isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); 4617 int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); 4618 int initialOffset = mTextView.getOffsetAtCoordinate(currLine, x); 4619 4620 if (isStartHandle() && initialOffset >= anotherHandleOffset 4621 || !isStartHandle() && initialOffset <= anotherHandleOffset) { 4622 // Handles have crossed, bound it to the first selected line and 4623 // adjust by word / char as normal. 4624 currLine = layout.getLineForOffset(anotherHandleOffset); 4625 initialOffset = mTextView.getOffsetAtCoordinate(currLine, x); 4626 } 4627 4628 int offset = initialOffset; 4629 final int wordEnd = getWordEnd(offset); 4630 final int wordStart = getWordStart(offset); 4631 4632 if (mPrevX == UNSET_X_VALUE) { 4633 mPrevX = x; 4634 } 4635 4636 final int currentOffset = getCurrentCursorOffset(); 4637 final boolean rtlAtCurrentOffset = layout.isRtlCharAt(currentOffset); 4638 final boolean atRtl = layout.isRtlCharAt(offset); 4639 final boolean isLvlBoundary = layout.isLevelBoundary(offset); 4640 4641 // We can't determine if the user is expanding or shrinking the selection if they're 4642 // on a bi-di boundary, so until they've moved past the boundary we'll just place 4643 // the cursor at the current position. 4644 if (isLvlBoundary || (rtlAtCurrentOffset && !atRtl) || (!rtlAtCurrentOffset && atRtl)) { 4645 // We're on a boundary or this is the first direction change -- just update 4646 // to the current position. 4647 mLanguageDirectionChanged = true; 4648 mTouchWordDelta = 0.0f; 4649 positionAndAdjustForCrossingHandles(offset); 4650 return; 4651 } else if (mLanguageDirectionChanged && !isLvlBoundary) { 4652 // We've just moved past the boundary so update the position. After this we can 4653 // figure out if the user is expanding or shrinking to go by word or character. 4654 positionAndAdjustForCrossingHandles(offset); 4655 mTouchWordDelta = 0.0f; 4656 mLanguageDirectionChanged = false; 4657 return; 4658 } 4659 4660 boolean isExpanding; 4661 final float xDiff = x - mPrevX; 4662 if (isStartHandle()) { 4663 isExpanding = currLine < mPreviousLineTouched; 4664 } else { 4665 isExpanding = currLine > mPreviousLineTouched; 4666 } 4667 if (atRtl == isStartHandle()) { 4668 isExpanding |= xDiff > 0; 4669 } else { 4670 isExpanding |= xDiff < 0; 4671 } 4672 4673 if (mTextView.getHorizontallyScrolling()) { 4674 if (positionNearEdgeOfScrollingView(x, atRtl) 4675 && ((isStartHandle() && mTextView.getScrollX() != 0) 4676 || (!isStartHandle() 4677 && mTextView.canScrollHorizontally(atRtl ? -1 : 1))) 4678 && ((isExpanding && ((isStartHandle() && offset < currentOffset) 4679 || (!isStartHandle() && offset > currentOffset))) 4680 || !isExpanding)) { 4681 // If we're expanding ensure that the offset is actually expanding compared to 4682 // the current offset, if the handle snapped to the word, the finger position 4683 // may be out of sync and we don't want the selection to jump back. 4684 mTouchWordDelta = 0.0f; 4685 final int nextOffset = (atRtl == isStartHandle()) 4686 ? layout.getOffsetToRightOf(mPreviousOffset) 4687 : layout.getOffsetToLeftOf(mPreviousOffset); 4688 positionAndAdjustForCrossingHandles(nextOffset); 4689 return; 4690 } 4691 } 4692 4693 if (isExpanding) { 4694 // User is increasing the selection. 4695 final boolean snapToWord = !mInWord 4696 || (isStartHandle() ? currLine < mPrevLine : currLine > mPrevLine); 4697 if (snapToWord) { 4698 // Sometimes words can be broken across lines (Chinese, hyphenation). 4699 // We still snap to the word boundary but we only use the letters on the 4700 // current line to determine if the user is far enough into the word to snap. 4701 int wordBoundary = isStartHandle() ? wordStart : wordEnd; 4702 if (layout != null && layout.getLineForOffset(wordBoundary) != currLine) { 4703 wordBoundary = isStartHandle() ? 4704 layout.getLineStart(currLine) : layout.getLineEnd(currLine); 4705 } 4706 final int offsetThresholdToSnap = isStartHandle() 4707 ? wordEnd - ((wordEnd - wordBoundary) / 2) 4708 : wordStart + ((wordBoundary - wordStart) / 2); 4709 if (isStartHandle() 4710 && (offset <= offsetThresholdToSnap || currLine < mPrevLine)) { 4711 // User is far enough into the word or on a different line so we expand by 4712 // word. 4713 offset = wordStart; 4714 } else if (!isStartHandle() 4715 && (offset >= offsetThresholdToSnap || currLine > mPrevLine)) { 4716 // User is far enough into the word or on a different line so we expand by 4717 // word. 4718 offset = wordEnd; 4719 } else { 4720 offset = mPreviousOffset; 4721 } 4722 } 4723 if (layout != null && (isStartHandle() && offset < initialOffset) 4724 || (!isStartHandle() && offset > initialOffset)) { 4725 final float adjustedX = layout.getPrimaryHorizontal(offset); 4726 mTouchWordDelta = 4727 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 4728 } else { 4729 mTouchWordDelta = 0.0f; 4730 } 4731 positionCursor = true; 4732 } else { 4733 final int adjustedOffset = 4734 mTextView.getOffsetAtCoordinate(currLine, x - mTouchWordDelta); 4735 final boolean shrinking = isStartHandle() 4736 ? adjustedOffset > mPreviousOffset || currLine > mPrevLine 4737 : adjustedOffset < mPreviousOffset || currLine < mPrevLine; 4738 if (shrinking) { 4739 // User is shrinking the selection. 4740 if (currLine != mPrevLine) { 4741 // We're on a different line, so we'll snap to word boundaries. 4742 offset = isStartHandle() ? wordStart : wordEnd; 4743 if (layout != null && (isStartHandle() && offset < initialOffset) 4744 || (!isStartHandle() && offset > initialOffset)) { 4745 final float adjustedX = layout.getPrimaryHorizontal(offset); 4746 mTouchWordDelta = 4747 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 4748 } else { 4749 mTouchWordDelta = 0.0f; 4750 } 4751 } else { 4752 offset = adjustedOffset; 4753 } 4754 positionCursor = true; 4755 } else if ((isStartHandle() && adjustedOffset < mPreviousOffset) 4756 || (!isStartHandle() && adjustedOffset > mPreviousOffset)) { 4757 // Handle has jumped to the word boundary, and the user is moving 4758 // their finger towards the handle, the delta should be updated. 4759 mTouchWordDelta = mTextView.convertToLocalHorizontalCoordinate(x) - 4760 layout.getPrimaryHorizontal(mPreviousOffset); 4761 } 4762 } 4763 4764 if (positionCursor) { 4765 mPreviousLineTouched = currLine; 4766 positionAndAdjustForCrossingHandles(offset); 4767 } 4768 mPrevX = x; 4769 } 4770 4771 /** 4772 * @param offset Cursor offset. Must be in [-1, length]. 4773 * @param parentScrolled If the parent has been scrolled or not. 4774 */ 4775 @Override 4776 protected void positionAtCursorOffset(int offset, boolean parentScrolled) { 4777 super.positionAtCursorOffset(offset, parentScrolled); 4778 mInWord = (offset != -1) && !getWordIteratorWithText().isBoundary(offset); 4779 } 4780 4781 @Override 4782 public boolean onTouchEvent(MotionEvent event) { 4783 boolean superResult = super.onTouchEvent(event); 4784 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 4785 // Reset the touch word offset and x value when the user 4786 // re-engages the handle. 4787 mTouchWordDelta = 0.0f; 4788 mPrevX = UNSET_X_VALUE; 4789 } 4790 return superResult; 4791 } 4792 4793 private void positionAndAdjustForCrossingHandles(int offset) { 4794 final int anotherHandleOffset = 4795 isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); 4796 if ((isStartHandle() && offset >= anotherHandleOffset) 4797 || (!isStartHandle() && offset <= anotherHandleOffset)) { 4798 // Handles can not cross and selection is at least one character. 4799 offset = getNextCursorOffset(anotherHandleOffset, !isStartHandle()); 4800 mTouchWordDelta = 0.0f; 4801 } 4802 positionAtCursorOffset(offset, false); 4803 } 4804 4805 private boolean positionNearEdgeOfScrollingView(float x, boolean atRtl) { 4806 mTextView.getLocationOnScreen(mTextViewLocation); 4807 boolean nearEdge; 4808 if (atRtl == isStartHandle()) { 4809 int rightEdge = mTextViewLocation[0] + mTextView.getWidth() 4810 - mTextView.getPaddingRight(); 4811 nearEdge = x > rightEdge - mTextViewEdgeSlop; 4812 } else { 4813 int leftEdge = mTextViewLocation[0] + mTextView.getPaddingLeft(); 4814 nearEdge = x < leftEdge + mTextViewEdgeSlop; 4815 } 4816 return nearEdge; 4817 } 4818 } 4819 4820 private int getCurrentLineAdjustedForSlop(Layout layout, int prevLine, float y) { 4821 final int trueLine = mTextView.getLineAtCoordinate(y); 4822 if (layout == null || prevLine > layout.getLineCount() 4823 || layout.getLineCount() <= 0 || prevLine < 0) { 4824 // Invalid parameters, just return whatever line is at y. 4825 return trueLine; 4826 } 4827 4828 if (Math.abs(trueLine - prevLine) >= 2) { 4829 // Only stick to lines if we're within a line of the previous selection. 4830 return trueLine; 4831 } 4832 4833 final float verticalOffset = mTextView.viewportToContentVerticalOffset(); 4834 final int lineCount = layout.getLineCount(); 4835 final float slop = mTextView.getLineHeight() * LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS; 4836 4837 final float firstLineTop = layout.getLineTop(0) + verticalOffset; 4838 final float prevLineTop = layout.getLineTop(prevLine) + verticalOffset; 4839 final float yTopBound = Math.max(prevLineTop - slop, firstLineTop + slop); 4840 4841 final float lastLineBottom = layout.getLineBottom(lineCount - 1) + verticalOffset; 4842 final float prevLineBottom = layout.getLineBottom(prevLine) + verticalOffset; 4843 final float yBottomBound = Math.min(prevLineBottom + slop, lastLineBottom - slop); 4844 4845 // Determine if we've moved lines based on y position and previous line. 4846 int currLine; 4847 if (y <= yTopBound) { 4848 currLine = Math.max(prevLine - 1, 0); 4849 } else if (y >= yBottomBound) { 4850 currLine = Math.min(prevLine + 1, lineCount - 1); 4851 } else { 4852 currLine = prevLine; 4853 } 4854 return currLine; 4855 } 4856 4857 /** 4858 * A CursorController instance can be used to control a cursor in the text. 4859 */ 4860 private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { 4861 /** 4862 * Makes the cursor controller visible on screen. 4863 * See also {@link #hide()}. 4864 */ 4865 public void show(); 4866 4867 /** 4868 * Hide the cursor controller from screen. 4869 * See also {@link #show()}. 4870 */ 4871 public void hide(); 4872 4873 /** 4874 * Called when the view is detached from window. Perform house keeping task, such as 4875 * stopping Runnable thread that would otherwise keep a reference on the context, thus 4876 * preventing the activity from being recycled. 4877 */ 4878 public void onDetached(); 4879 4880 public boolean isCursorBeingModified(); 4881 4882 public boolean isActive(); 4883 } 4884 4885 private class InsertionPointCursorController implements CursorController { 4886 private InsertionHandleView mHandle; 4887 4888 public void show() { 4889 getHandle().show(); 4890 4891 if (mSelectionModifierCursorController != null) { 4892 mSelectionModifierCursorController.hide(); 4893 } 4894 } 4895 4896 public void hide() { 4897 if (mHandle != null) { 4898 mHandle.hide(); 4899 } 4900 } 4901 4902 public void onTouchModeChanged(boolean isInTouchMode) { 4903 if (!isInTouchMode) { 4904 hide(); 4905 } 4906 } 4907 4908 private InsertionHandleView getHandle() { 4909 if (mSelectHandleCenter == null) { 4910 mSelectHandleCenter = mTextView.getContext().getDrawable( 4911 mTextView.mTextSelectHandleRes); 4912 } 4913 if (mHandle == null) { 4914 mHandle = new InsertionHandleView(mSelectHandleCenter); 4915 } 4916 return mHandle; 4917 } 4918 4919 @Override 4920 public void onDetached() { 4921 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 4922 observer.removeOnTouchModeChangeListener(this); 4923 4924 if (mHandle != null) mHandle.onDetached(); 4925 } 4926 4927 @Override 4928 public boolean isCursorBeingModified() { 4929 return mHandle != null && mHandle.isDragging(); 4930 } 4931 4932 @Override 4933 public boolean isActive() { 4934 return mHandle != null && mHandle.isShowing(); 4935 } 4936 } 4937 4938 class SelectionModifierCursorController implements CursorController { 4939 // The cursor controller handles, lazily created when shown. 4940 private SelectionHandleView mStartHandle; 4941 private SelectionHandleView mEndHandle; 4942 // The offsets of that last touch down event. Remembered to start selection there. 4943 private int mMinTouchOffset, mMaxTouchOffset; 4944 4945 private float mDownPositionX, mDownPositionY; 4946 private boolean mGestureStayedInTapRegion; 4947 4948 // Where the user first starts the drag motion. 4949 private int mStartOffset = -1; 4950 4951 private boolean mHaventMovedEnoughToStartDrag; 4952 // The line that a selection happened most recently with the drag accelerator. 4953 private int mLineSelectionIsOn = -1; 4954 // Whether the drag accelerator has selected past the initial line. 4955 private boolean mSwitchedLines = false; 4956 4957 // Indicates the drag accelerator mode that the user is currently using. 4958 private int mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; 4959 // Drag accelerator is inactive. 4960 private static final int DRAG_ACCELERATOR_MODE_INACTIVE = 0; 4961 // Character based selection by dragging. Only for mouse. 4962 private static final int DRAG_ACCELERATOR_MODE_CHARACTER = 1; 4963 // Word based selection by dragging. Enabled after long pressing or double tapping. 4964 private static final int DRAG_ACCELERATOR_MODE_WORD = 2; 4965 // Paragraph based selection by dragging. Enabled after mouse triple click. 4966 private static final int DRAG_ACCELERATOR_MODE_PARAGRAPH = 3; 4967 4968 SelectionModifierCursorController() { 4969 resetTouchOffsets(); 4970 } 4971 4972 public void show() { 4973 if (mTextView.isInBatchEditMode()) { 4974 return; 4975 } 4976 initDrawables(); 4977 initHandles(); 4978 } 4979 4980 private void initDrawables() { 4981 if (mSelectHandleLeft == null) { 4982 mSelectHandleLeft = mTextView.getContext().getDrawable( 4983 mTextView.mTextSelectHandleLeftRes); 4984 } 4985 if (mSelectHandleRight == null) { 4986 mSelectHandleRight = mTextView.getContext().getDrawable( 4987 mTextView.mTextSelectHandleRightRes); 4988 } 4989 } 4990 4991 private void initHandles() { 4992 // Lazy object creation has to be done before updatePosition() is called. 4993 if (mStartHandle == null) { 4994 mStartHandle = new SelectionHandleView(mSelectHandleLeft, mSelectHandleRight, 4995 com.android.internal.R.id.selection_start_handle, 4996 HANDLE_TYPE_SELECTION_START); 4997 } 4998 if (mEndHandle == null) { 4999 mEndHandle = new SelectionHandleView(mSelectHandleRight, mSelectHandleLeft, 5000 com.android.internal.R.id.selection_end_handle, 5001 HANDLE_TYPE_SELECTION_END); 5002 } 5003 5004 mStartHandle.show(); 5005 mEndHandle.show(); 5006 5007 hideInsertionPointCursorController(); 5008 } 5009 5010 public void hide() { 5011 if (mStartHandle != null) mStartHandle.hide(); 5012 if (mEndHandle != null) mEndHandle.hide(); 5013 } 5014 5015 public void enterDrag(int dragAcceleratorMode) { 5016 // Just need to init the handles / hide insertion cursor. 5017 show(); 5018 mDragAcceleratorMode = dragAcceleratorMode; 5019 // Start location of selection. 5020 mStartOffset = mTextView.getOffsetForPosition(mLastDownPositionX, 5021 mLastDownPositionY); 5022 mLineSelectionIsOn = mTextView.getLineAtCoordinate(mLastDownPositionY); 5023 // Don't show the handles until user has lifted finger. 5024 hide(); 5025 5026 // This stops scrolling parents from intercepting the touch event, allowing 5027 // the user to continue dragging across the screen to select text; TextView will 5028 // scroll as necessary. 5029 mTextView.getParent().requestDisallowInterceptTouchEvent(true); 5030 mTextView.cancelLongPress(); 5031 } 5032 5033 public void onTouchEvent(MotionEvent event) { 5034 // This is done even when the View does not have focus, so that long presses can start 5035 // selection and tap can move cursor from this tap position. 5036 final float eventX = event.getX(); 5037 final float eventY = event.getY(); 5038 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 5039 switch (event.getActionMasked()) { 5040 case MotionEvent.ACTION_DOWN: 5041 if (extractedTextModeWillBeStarted()) { 5042 // Prevent duplicating the selection handles until the mode starts. 5043 hide(); 5044 } else { 5045 // Remember finger down position, to be able to start selection from there. 5046 mMinTouchOffset = mMaxTouchOffset = mTextView.getOffsetForPosition( 5047 eventX, eventY); 5048 5049 // Double tap detection 5050 if (mGestureStayedInTapRegion) { 5051 if (mTapState == TAP_STATE_DOUBLE_TAP 5052 || mTapState == TAP_STATE_TRIPLE_CLICK) { 5053 final float deltaX = eventX - mDownPositionX; 5054 final float deltaY = eventY - mDownPositionY; 5055 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 5056 5057 ViewConfiguration viewConfiguration = ViewConfiguration.get( 5058 mTextView.getContext()); 5059 int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop(); 5060 boolean stayedInArea = 5061 distanceSquared < doubleTapSlop * doubleTapSlop; 5062 5063 if (stayedInArea && (isMouse || isPositionOnText(eventX, eventY))) { 5064 if (mTapState == TAP_STATE_DOUBLE_TAP) { 5065 selectCurrentWordAndStartDrag(); 5066 } else if (mTapState == TAP_STATE_TRIPLE_CLICK) { 5067 selectCurrentParagraphAndStartDrag(); 5068 } 5069 mDiscardNextActionUp = true; 5070 } 5071 } 5072 } 5073 5074 mDownPositionX = eventX; 5075 mDownPositionY = eventY; 5076 mGestureStayedInTapRegion = true; 5077 mHaventMovedEnoughToStartDrag = true; 5078 } 5079 break; 5080 5081 case MotionEvent.ACTION_POINTER_DOWN: 5082 case MotionEvent.ACTION_POINTER_UP: 5083 // Handle multi-point gestures. Keep min and max offset positions. 5084 // Only activated for devices that correctly handle multi-touch. 5085 if (mTextView.getContext().getPackageManager().hasSystemFeature( 5086 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { 5087 updateMinAndMaxOffsets(event); 5088 } 5089 break; 5090 5091 case MotionEvent.ACTION_MOVE: 5092 final ViewConfiguration viewConfig = ViewConfiguration.get( 5093 mTextView.getContext()); 5094 final int touchSlop = viewConfig.getScaledTouchSlop(); 5095 5096 if (mGestureStayedInTapRegion || mHaventMovedEnoughToStartDrag) { 5097 final float deltaX = eventX - mDownPositionX; 5098 final float deltaY = eventY - mDownPositionY; 5099 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 5100 5101 if (mGestureStayedInTapRegion) { 5102 int doubleTapTouchSlop = viewConfig.getScaledDoubleTapTouchSlop(); 5103 mGestureStayedInTapRegion = 5104 distanceSquared <= doubleTapTouchSlop * doubleTapTouchSlop; 5105 } 5106 if (mHaventMovedEnoughToStartDrag) { 5107 // We don't start dragging until the user has moved enough. 5108 mHaventMovedEnoughToStartDrag = 5109 distanceSquared <= touchSlop * touchSlop; 5110 } 5111 } 5112 5113 if (isMouse && !isDragAcceleratorActive()) { 5114 final int offset = mTextView.getOffsetForPosition(eventX, eventY); 5115 if (mTextView.hasSelection() 5116 && (!mHaventMovedEnoughToStartDrag || mStartOffset != offset) 5117 && offset >= mTextView.getSelectionStart() 5118 && offset <= mTextView.getSelectionEnd()) { 5119 startDragAndDrop(); 5120 break; 5121 } 5122 5123 if (mStartOffset != offset) { 5124 // Start character based drag accelerator. 5125 stopTextActionMode(); 5126 enterDrag(DRAG_ACCELERATOR_MODE_CHARACTER); 5127 mDiscardNextActionUp = true; 5128 mHaventMovedEnoughToStartDrag = false; 5129 } 5130 } 5131 5132 if (mStartHandle != null && mStartHandle.isShowing()) { 5133 // Don't do the drag if the handles are showing already. 5134 break; 5135 } 5136 5137 updateSelection(event); 5138 break; 5139 5140 case MotionEvent.ACTION_UP: 5141 if (!isDragAcceleratorActive()) { 5142 break; 5143 } 5144 updateSelection(event); 5145 5146 // No longer dragging to select text, let the parent intercept events. 5147 mTextView.getParent().requestDisallowInterceptTouchEvent(false); 5148 5149 // No longer the first dragging motion, reset. 5150 resetDragAcceleratorState(); 5151 5152 if (mTextView.hasSelection()) { 5153 startSelectionActionMode(); 5154 } 5155 break; 5156 } 5157 } 5158 5159 private void updateSelection(MotionEvent event) { 5160 if (mTextView.getLayout() != null) { 5161 switch (mDragAcceleratorMode) { 5162 case DRAG_ACCELERATOR_MODE_CHARACTER: 5163 updateCharacterBasedSelection(event); 5164 break; 5165 case DRAG_ACCELERATOR_MODE_WORD: 5166 updateWordBasedSelection(event); 5167 break; 5168 case DRAG_ACCELERATOR_MODE_PARAGRAPH: 5169 updateParagraphBasedSelection(event); 5170 break; 5171 } 5172 } 5173 } 5174 5175 /** 5176 * If the TextView allows text selection, selects the current paragraph and starts a drag. 5177 * 5178 * @return true if the drag was started. 5179 */ 5180 private boolean selectCurrentParagraphAndStartDrag() { 5181 if (mInsertionActionModeRunnable != null) { 5182 mTextView.removeCallbacks(mInsertionActionModeRunnable); 5183 } 5184 stopTextActionMode(); 5185 if (!selectCurrentParagraph()) { 5186 return false; 5187 } 5188 enterDrag(SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_PARAGRAPH); 5189 return true; 5190 } 5191 5192 private void updateCharacterBasedSelection(MotionEvent event) { 5193 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 5194 Selection.setSelection((Spannable) mTextView.getText(), mStartOffset, offset); 5195 } 5196 5197 private void updateWordBasedSelection(MotionEvent event) { 5198 if (mHaventMovedEnoughToStartDrag) { 5199 return; 5200 } 5201 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 5202 final ViewConfiguration viewConfig = ViewConfiguration.get( 5203 mTextView.getContext()); 5204 final float eventX = event.getX(); 5205 final float eventY = event.getY(); 5206 final int currLine; 5207 if (isMouse) { 5208 // No need to offset the y coordinate for mouse input. 5209 currLine = mTextView.getLineAtCoordinate(eventY); 5210 } else { 5211 float y = eventY; 5212 if (mSwitchedLines) { 5213 // Offset the finger by the same vertical offset as the handles. 5214 // This improves visibility of the content being selected by 5215 // shifting the finger below the content, this is applied once 5216 // the user has switched lines. 5217 final int touchSlop = viewConfig.getScaledTouchSlop(); 5218 final float fingerOffset = (mStartHandle != null) 5219 ? mStartHandle.getIdealVerticalOffset() 5220 : touchSlop; 5221 y = eventY - fingerOffset; 5222 } 5223 5224 currLine = getCurrentLineAdjustedForSlop(mTextView.getLayout(), mLineSelectionIsOn, 5225 y); 5226 if (!mSwitchedLines && currLine != mLineSelectionIsOn) { 5227 // Break early here, we want to offset the finger position from 5228 // the selection highlight, once the user moved their finger 5229 // to a different line we should apply the offset and *not* switch 5230 // lines until recomputing the position with the finger offset. 5231 mSwitchedLines = true; 5232 return; 5233 } 5234 } 5235 5236 int startOffset; 5237 int offset = mTextView.getOffsetAtCoordinate(currLine, eventX); 5238 // Snap to word boundaries. 5239 if (mStartOffset < offset) { 5240 // Expanding with end handle. 5241 offset = getWordEnd(offset); 5242 startOffset = getWordStart(mStartOffset); 5243 } else { 5244 // Expanding with start handle. 5245 offset = getWordStart(offset); 5246 startOffset = getWordEnd(mStartOffset); 5247 } 5248 mLineSelectionIsOn = currLine; 5249 Selection.setSelection((Spannable) mTextView.getText(), 5250 startOffset, offset); 5251 } 5252 5253 private void updateParagraphBasedSelection(MotionEvent event) { 5254 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 5255 5256 final int start = Math.min(offset, mStartOffset); 5257 final int end = Math.max(offset, mStartOffset); 5258 final long paragraphsRange = getParagraphsRange(start, end); 5259 final int selectionStart = TextUtils.unpackRangeStartFromLong(paragraphsRange); 5260 final int selectionEnd = TextUtils.unpackRangeEndFromLong(paragraphsRange); 5261 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 5262 } 5263 5264 /** 5265 * @param event 5266 */ 5267 private void updateMinAndMaxOffsets(MotionEvent event) { 5268 int pointerCount = event.getPointerCount(); 5269 for (int index = 0; index < pointerCount; index++) { 5270 int offset = mTextView.getOffsetForPosition(event.getX(index), event.getY(index)); 5271 if (offset < mMinTouchOffset) mMinTouchOffset = offset; 5272 if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; 5273 } 5274 } 5275 5276 public int getMinTouchOffset() { 5277 return mMinTouchOffset; 5278 } 5279 5280 public int getMaxTouchOffset() { 5281 return mMaxTouchOffset; 5282 } 5283 5284 public void resetTouchOffsets() { 5285 mMinTouchOffset = mMaxTouchOffset = -1; 5286 resetDragAcceleratorState(); 5287 } 5288 5289 private void resetDragAcceleratorState() { 5290 mStartOffset = -1; 5291 mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; 5292 mSwitchedLines = false; 5293 final int selectionStart = mTextView.getSelectionStart(); 5294 final int selectionEnd = mTextView.getSelectionEnd(); 5295 if (selectionStart > selectionEnd) { 5296 Selection.setSelection((Spannable) mTextView.getText(), 5297 selectionEnd, selectionStart); 5298 } 5299 } 5300 5301 /** 5302 * @return true iff this controller is currently used to move the selection start. 5303 */ 5304 public boolean isSelectionStartDragged() { 5305 return mStartHandle != null && mStartHandle.isDragging(); 5306 } 5307 5308 @Override 5309 public boolean isCursorBeingModified() { 5310 return isDragAcceleratorActive() || isSelectionStartDragged() 5311 || (mEndHandle != null && mEndHandle.isDragging()); 5312 } 5313 5314 /** 5315 * @return true if the user is selecting text using the drag accelerator. 5316 */ 5317 public boolean isDragAcceleratorActive() { 5318 return mDragAcceleratorMode != DRAG_ACCELERATOR_MODE_INACTIVE; 5319 } 5320 5321 public void onTouchModeChanged(boolean isInTouchMode) { 5322 if (!isInTouchMode) { 5323 hide(); 5324 } 5325 } 5326 5327 @Override 5328 public void onDetached() { 5329 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 5330 observer.removeOnTouchModeChangeListener(this); 5331 5332 if (mStartHandle != null) mStartHandle.onDetached(); 5333 if (mEndHandle != null) mEndHandle.onDetached(); 5334 } 5335 5336 @Override 5337 public boolean isActive() { 5338 return mStartHandle != null && mStartHandle.isShowing(); 5339 } 5340 } 5341 5342 private class CorrectionHighlighter { 5343 private final Path mPath = new Path(); 5344 private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 5345 private int mStart, mEnd; 5346 private long mFadingStartTime; 5347 private RectF mTempRectF; 5348 private final static int FADE_OUT_DURATION = 400; 5349 5350 public CorrectionHighlighter() { 5351 mPaint.setCompatibilityScaling(mTextView.getResources().getCompatibilityInfo(). 5352 applicationScale); 5353 mPaint.setStyle(Paint.Style.FILL); 5354 } 5355 5356 public void highlight(CorrectionInfo info) { 5357 mStart = info.getOffset(); 5358 mEnd = mStart + info.getNewText().length(); 5359 mFadingStartTime = SystemClock.uptimeMillis(); 5360 5361 if (mStart < 0 || mEnd < 0) { 5362 stopAnimation(); 5363 } 5364 } 5365 5366 public void draw(Canvas canvas, int cursorOffsetVertical) { 5367 if (updatePath() && updatePaint()) { 5368 if (cursorOffsetVertical != 0) { 5369 canvas.translate(0, cursorOffsetVertical); 5370 } 5371 5372 canvas.drawPath(mPath, mPaint); 5373 5374 if (cursorOffsetVertical != 0) { 5375 canvas.translate(0, -cursorOffsetVertical); 5376 } 5377 invalidate(true); // TODO invalidate cursor region only 5378 } else { 5379 stopAnimation(); 5380 invalidate(false); // TODO invalidate cursor region only 5381 } 5382 } 5383 5384 private boolean updatePaint() { 5385 final long duration = SystemClock.uptimeMillis() - mFadingStartTime; 5386 if (duration > FADE_OUT_DURATION) return false; 5387 5388 final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; 5389 final int highlightColorAlpha = Color.alpha(mTextView.mHighlightColor); 5390 final int color = (mTextView.mHighlightColor & 0x00FFFFFF) + 5391 ((int) (highlightColorAlpha * coef) << 24); 5392 mPaint.setColor(color); 5393 return true; 5394 } 5395 5396 private boolean updatePath() { 5397 final Layout layout = mTextView.getLayout(); 5398 if (layout == null) return false; 5399 5400 // Update in case text is edited while the animation is run 5401 final int length = mTextView.getText().length(); 5402 int start = Math.min(length, mStart); 5403 int end = Math.min(length, mEnd); 5404 5405 mPath.reset(); 5406 layout.getSelectionPath(start, end, mPath); 5407 return true; 5408 } 5409 5410 private void invalidate(boolean delayed) { 5411 if (mTextView.getLayout() == null) return; 5412 5413 if (mTempRectF == null) mTempRectF = new RectF(); 5414 mPath.computeBounds(mTempRectF, false); 5415 5416 int left = mTextView.getCompoundPaddingLeft(); 5417 int top = mTextView.getExtendedPaddingTop() + mTextView.getVerticalOffset(true); 5418 5419 if (delayed) { 5420 mTextView.postInvalidateOnAnimation( 5421 left + (int) mTempRectF.left, top + (int) mTempRectF.top, 5422 left + (int) mTempRectF.right, top + (int) mTempRectF.bottom); 5423 } else { 5424 mTextView.postInvalidate((int) mTempRectF.left, (int) mTempRectF.top, 5425 (int) mTempRectF.right, (int) mTempRectF.bottom); 5426 } 5427 } 5428 5429 private void stopAnimation() { 5430 Editor.this.mCorrectionHighlighter = null; 5431 } 5432 } 5433 5434 private static class ErrorPopup extends PopupWindow { 5435 private boolean mAbove = false; 5436 private final TextView mView; 5437 private int mPopupInlineErrorBackgroundId = 0; 5438 private int mPopupInlineErrorAboveBackgroundId = 0; 5439 5440 ErrorPopup(TextView v, int width, int height) { 5441 super(v, width, height); 5442 mView = v; 5443 // Make sure the TextView has a background set as it will be used the first time it is 5444 // shown and positioned. Initialized with below background, which should have 5445 // dimensions identical to the above version for this to work (and is more likely). 5446 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 5447 com.android.internal.R.styleable.Theme_errorMessageBackground); 5448 mView.setBackgroundResource(mPopupInlineErrorBackgroundId); 5449 } 5450 5451 void fixDirection(boolean above) { 5452 mAbove = above; 5453 5454 if (above) { 5455 mPopupInlineErrorAboveBackgroundId = 5456 getResourceId(mPopupInlineErrorAboveBackgroundId, 5457 com.android.internal.R.styleable.Theme_errorMessageAboveBackground); 5458 } else { 5459 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 5460 com.android.internal.R.styleable.Theme_errorMessageBackground); 5461 } 5462 5463 mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId : 5464 mPopupInlineErrorBackgroundId); 5465 } 5466 5467 private int getResourceId(int currentId, int index) { 5468 if (currentId == 0) { 5469 TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( 5470 R.styleable.Theme); 5471 currentId = styledAttributes.getResourceId(index, 0); 5472 styledAttributes.recycle(); 5473 } 5474 return currentId; 5475 } 5476 5477 @Override 5478 public void update(int x, int y, int w, int h, boolean force) { 5479 super.update(x, y, w, h, force); 5480 5481 boolean above = isAboveAnchor(); 5482 if (above != mAbove) { 5483 fixDirection(above); 5484 } 5485 } 5486 } 5487 5488 static class InputContentType { 5489 int imeOptions = EditorInfo.IME_NULL; 5490 String privateImeOptions; 5491 CharSequence imeActionLabel; 5492 int imeActionId; 5493 Bundle extras; 5494 OnEditorActionListener onEditorActionListener; 5495 boolean enterDown; 5496 LocaleList imeHintLocales; 5497 } 5498 5499 static class InputMethodState { 5500 ExtractedTextRequest mExtractedTextRequest; 5501 final ExtractedText mExtractedText = new ExtractedText(); 5502 int mBatchEditNesting; 5503 boolean mCursorChanged; 5504 boolean mSelectionModeChanged; 5505 boolean mContentChanged; 5506 int mChangedStart, mChangedEnd, mChangedDelta; 5507 } 5508 5509 /** 5510 * @return True iff (start, end) is a valid range within the text. 5511 */ 5512 private static boolean isValidRange(CharSequence text, int start, int end) { 5513 return 0 <= start && start <= end && end <= text.length(); 5514 } 5515 5516 @VisibleForTesting 5517 public SuggestionsPopupWindow getSuggestionsPopupWindowForTesting() { 5518 return mSuggestionsPopupWindow; 5519 } 5520 5521 /** 5522 * An InputFilter that monitors text input to maintain undo history. It does not modify the 5523 * text being typed (and hence always returns null from the filter() method). 5524 */ 5525 public static class UndoInputFilter implements InputFilter { 5526 private final Editor mEditor; 5527 5528 // Whether the current filter pass is directly caused by an end-user text edit. 5529 private boolean mIsUserEdit; 5530 5531 // Whether the text field is handling an IME composition. Must be parceled in case the user 5532 // rotates the screen during composition. 5533 private boolean mHasComposition; 5534 5535 // Whether to merge events into one operation. 5536 private boolean mForceMerge; 5537 5538 public UndoInputFilter(Editor editor) { 5539 mEditor = editor; 5540 } 5541 5542 public void saveInstanceState(Parcel parcel) { 5543 parcel.writeInt(mIsUserEdit ? 1 : 0); 5544 parcel.writeInt(mHasComposition ? 1 : 0); 5545 } 5546 5547 public void restoreInstanceState(Parcel parcel) { 5548 mIsUserEdit = parcel.readInt() != 0; 5549 mHasComposition = parcel.readInt() != 0; 5550 } 5551 5552 public void setForceMerge(boolean forceMerge) { 5553 mForceMerge = forceMerge; 5554 } 5555 5556 /** 5557 * Signals that a user-triggered edit is starting. 5558 */ 5559 public void beginBatchEdit() { 5560 if (DEBUG_UNDO) Log.d(TAG, "beginBatchEdit"); 5561 mIsUserEdit = true; 5562 } 5563 5564 public void endBatchEdit() { 5565 if (DEBUG_UNDO) Log.d(TAG, "endBatchEdit"); 5566 mIsUserEdit = false; 5567 } 5568 5569 @Override 5570 public CharSequence filter(CharSequence source, int start, int end, 5571 Spanned dest, int dstart, int dend) { 5572 if (DEBUG_UNDO) { 5573 Log.d(TAG, "filter: source=" + source + " (" + start + "-" + end + ") " + 5574 "dest=" + dest + " (" + dstart + "-" + dend + ")"); 5575 } 5576 5577 // Check to see if this edit should be tracked for undo. 5578 if (!canUndoEdit(source, start, end, dest, dstart, dend)) { 5579 return null; 5580 } 5581 5582 // Check for and handle IME composition edits. 5583 if (handleCompositionEdit(source, start, end, dstart)) { 5584 return null; 5585 } 5586 5587 // Handle keyboard edits. 5588 handleKeyboardEdit(source, start, end, dest, dstart, dend); 5589 return null; 5590 } 5591 5592 /** 5593 * Returns true iff the edit was handled, either because it should be ignored or because 5594 * this function created an undo operation for it. 5595 */ 5596 private boolean handleCompositionEdit(CharSequence source, int start, int end, int dstart) { 5597 // Ignore edits while the user is composing. 5598 if (isComposition(source)) { 5599 mHasComposition = true; 5600 return true; 5601 } 5602 final boolean hadComposition = mHasComposition; 5603 mHasComposition = false; 5604 5605 // Check for the transition out of the composing state. 5606 if (hadComposition) { 5607 // If there was no text the user canceled composition. Ignore the edit. 5608 if (start == end) { 5609 return true; 5610 } 5611 5612 // Otherwise the user inserted the composition. 5613 String newText = TextUtils.substring(source, start, end); 5614 EditOperation edit = new EditOperation(mEditor, "", dstart, newText); 5615 recordEdit(edit, mForceMerge); 5616 return true; 5617 } 5618 5619 // This was neither a composition event nor a transition out of composing. 5620 return false; 5621 } 5622 5623 private void handleKeyboardEdit(CharSequence source, int start, int end, 5624 Spanned dest, int dstart, int dend) { 5625 // An application may install a TextWatcher to provide additional modifications after 5626 // the initial input filters run (e.g. a credit card formatter that adds spaces to a 5627 // string). This results in multiple filter() calls for what the user considers to be 5628 // a single operation. Always undo the whole set of changes in one step. 5629 final boolean forceMerge = mForceMerge || isInTextWatcher(); 5630 5631 // Build a new operation with all the information from this edit. 5632 String newText = TextUtils.substring(source, start, end); 5633 String oldText = TextUtils.substring(dest, dstart, dend); 5634 EditOperation edit = new EditOperation(mEditor, oldText, dstart, newText); 5635 recordEdit(edit, forceMerge); 5636 } 5637 5638 /** 5639 * Fetches the last undo operation and checks to see if a new edit should be merged into it. 5640 * If forceMerge is true then the new edit is always merged. 5641 */ 5642 private void recordEdit(EditOperation edit, boolean forceMerge) { 5643 // Fetch the last edit operation and attempt to merge in the new edit. 5644 final UndoManager um = mEditor.mUndoManager; 5645 um.beginUpdate("Edit text"); 5646 EditOperation lastEdit = um.getLastOperation( 5647 EditOperation.class, mEditor.mUndoOwner, UndoManager.MERGE_MODE_UNIQUE); 5648 if (lastEdit == null) { 5649 // Add this as the first edit. 5650 if (DEBUG_UNDO) Log.d(TAG, "filter: adding first op " + edit); 5651 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5652 } else if (forceMerge) { 5653 // Forced merges take priority because they could be the result of a non-user-edit 5654 // change and this case should not create a new undo operation. 5655 if (DEBUG_UNDO) Log.d(TAG, "filter: force merge " + edit); 5656 lastEdit.forceMergeWith(edit); 5657 } else if (!mIsUserEdit) { 5658 // An application directly modified the Editable outside of a text edit. Treat this 5659 // as a new change and don't attempt to merge. 5660 if (DEBUG_UNDO) Log.d(TAG, "non-user edit, new op " + edit); 5661 um.commitState(mEditor.mUndoOwner); 5662 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5663 } else if (lastEdit.mergeWith(edit)) { 5664 // Merge succeeded, nothing else to do. 5665 if (DEBUG_UNDO) Log.d(TAG, "filter: merge succeeded, created " + lastEdit); 5666 } else { 5667 // Could not merge with the last edit, so commit the last edit and add this edit. 5668 if (DEBUG_UNDO) Log.d(TAG, "filter: merge failed, adding " + edit); 5669 um.commitState(mEditor.mUndoOwner); 5670 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 5671 } 5672 um.endUpdate(); 5673 } 5674 5675 private boolean canUndoEdit(CharSequence source, int start, int end, 5676 Spanned dest, int dstart, int dend) { 5677 if (!mEditor.mAllowUndo) { 5678 if (DEBUG_UNDO) Log.d(TAG, "filter: undo is disabled"); 5679 return false; 5680 } 5681 5682 if (mEditor.mUndoManager.isInUndo()) { 5683 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping, currently performing undo/redo"); 5684 return false; 5685 } 5686 5687 // Text filters run before input operations are applied. However, some input operations 5688 // are invalid and will throw exceptions when applied. This is common in tests. Don't 5689 // attempt to undo invalid operations. 5690 if (!isValidRange(source, start, end) || !isValidRange(dest, dstart, dend)) { 5691 if (DEBUG_UNDO) Log.d(TAG, "filter: invalid op"); 5692 return false; 5693 } 5694 5695 // Earlier filters can rewrite input to be a no-op, for example due to a length limit 5696 // on an input field. Skip no-op changes. 5697 if (start == end && dstart == dend) { 5698 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping no-op"); 5699 return false; 5700 } 5701 5702 return true; 5703 } 5704 5705 private boolean isComposition(CharSequence source) { 5706 if (!(source instanceof Spannable)) { 5707 return false; 5708 } 5709 // This is a composition edit if the source has a non-zero-length composing span. 5710 Spannable text = (Spannable) source; 5711 int composeBegin = EditableInputConnection.getComposingSpanStart(text); 5712 int composeEnd = EditableInputConnection.getComposingSpanEnd(text); 5713 return composeBegin < composeEnd; 5714 } 5715 5716 private boolean isInTextWatcher() { 5717 CharSequence text = mEditor.mTextView.getText(); 5718 return (text instanceof SpannableStringBuilder) 5719 && ((SpannableStringBuilder) text).getTextWatcherDepth() > 0; 5720 } 5721 } 5722 5723 /** 5724 * An operation to undo a single "edit" to a text view. 5725 */ 5726 public static class EditOperation extends UndoOperation<Editor> { 5727 private static final int TYPE_INSERT = 0; 5728 private static final int TYPE_DELETE = 1; 5729 private static final int TYPE_REPLACE = 2; 5730 5731 private int mType; 5732 private String mOldText; 5733 private int mOldTextStart; 5734 private String mNewText; 5735 private int mNewTextStart; 5736 5737 private int mOldCursorPos; 5738 private int mNewCursorPos; 5739 5740 /** 5741 * Constructs an edit operation from a text input operation on editor that replaces the 5742 * oldText starting at dstart with newText. 5743 */ 5744 public EditOperation(Editor editor, String oldText, int dstart, String newText) { 5745 super(editor.mUndoOwner); 5746 mOldText = oldText; 5747 mNewText = newText; 5748 5749 // Determine the type of the edit and store where it occurred. Avoid storing 5750 // irrevelant data (e.g. mNewTextStart for a delete) because that makes the 5751 // merging logic more complex (e.g. merging deletes could lead to mNewTextStart being 5752 // outside the bounds of the final text). 5753 if (mNewText.length() > 0 && mOldText.length() == 0) { 5754 mType = TYPE_INSERT; 5755 mNewTextStart = dstart; 5756 } else if (mNewText.length() == 0 && mOldText.length() > 0) { 5757 mType = TYPE_DELETE; 5758 mOldTextStart = dstart; 5759 } else { 5760 mType = TYPE_REPLACE; 5761 mOldTextStart = mNewTextStart = dstart; 5762 } 5763 5764 // Store cursor data. 5765 mOldCursorPos = editor.mTextView.getSelectionStart(); 5766 mNewCursorPos = dstart + mNewText.length(); 5767 } 5768 5769 public EditOperation(Parcel src, ClassLoader loader) { 5770 super(src, loader); 5771 mType = src.readInt(); 5772 mOldText = src.readString(); 5773 mOldTextStart = src.readInt(); 5774 mNewText = src.readString(); 5775 mNewTextStart = src.readInt(); 5776 mOldCursorPos = src.readInt(); 5777 mNewCursorPos = src.readInt(); 5778 } 5779 5780 @Override 5781 public void writeToParcel(Parcel dest, int flags) { 5782 dest.writeInt(mType); 5783 dest.writeString(mOldText); 5784 dest.writeInt(mOldTextStart); 5785 dest.writeString(mNewText); 5786 dest.writeInt(mNewTextStart); 5787 dest.writeInt(mOldCursorPos); 5788 dest.writeInt(mNewCursorPos); 5789 } 5790 5791 private int getNewTextEnd() { 5792 return mNewTextStart + mNewText.length(); 5793 } 5794 5795 private int getOldTextEnd() { 5796 return mOldTextStart + mOldText.length(); 5797 } 5798 5799 @Override 5800 public void commit() { 5801 } 5802 5803 @Override 5804 public void undo() { 5805 if (DEBUG_UNDO) Log.d(TAG, "undo"); 5806 // Remove the new text and insert the old. 5807 Editor editor = getOwnerData(); 5808 Editable text = (Editable) editor.mTextView.getText(); 5809 modifyText(text, mNewTextStart, getNewTextEnd(), mOldText, mOldTextStart, 5810 mOldCursorPos); 5811 } 5812 5813 @Override 5814 public void redo() { 5815 if (DEBUG_UNDO) Log.d(TAG, "redo"); 5816 // Remove the old text and insert the new. 5817 Editor editor = getOwnerData(); 5818 Editable text = (Editable) editor.mTextView.getText(); 5819 modifyText(text, mOldTextStart, getOldTextEnd(), mNewText, mNewTextStart, 5820 mNewCursorPos); 5821 } 5822 5823 /** 5824 * Attempts to merge this existing operation with a new edit. 5825 * @param edit The new edit operation. 5826 * @return If the merge succeeded, returns true. Otherwise returns false and leaves this 5827 * object unchanged. 5828 */ 5829 private boolean mergeWith(EditOperation edit) { 5830 if (DEBUG_UNDO) { 5831 Log.d(TAG, "mergeWith old " + this); 5832 Log.d(TAG, "mergeWith new " + edit); 5833 } 5834 switch (mType) { 5835 case TYPE_INSERT: 5836 return mergeInsertWith(edit); 5837 case TYPE_DELETE: 5838 return mergeDeleteWith(edit); 5839 case TYPE_REPLACE: 5840 return mergeReplaceWith(edit); 5841 default: 5842 return false; 5843 } 5844 } 5845 5846 private boolean mergeInsertWith(EditOperation edit) { 5847 // Only merge continuous insertions. 5848 if (edit.mType != TYPE_INSERT) { 5849 return false; 5850 } 5851 // Only merge insertions that are contiguous. 5852 if (getNewTextEnd() != edit.mNewTextStart) { 5853 return false; 5854 } 5855 mNewText += edit.mNewText; 5856 mNewCursorPos = edit.mNewCursorPos; 5857 return true; 5858 } 5859 5860 // TODO: Support forward delete. 5861 private boolean mergeDeleteWith(EditOperation edit) { 5862 // Only merge continuous deletes. 5863 if (edit.mType != TYPE_DELETE) { 5864 return false; 5865 } 5866 // Only merge deletions that are contiguous. 5867 if (mOldTextStart != edit.getOldTextEnd()) { 5868 return false; 5869 } 5870 mOldTextStart = edit.mOldTextStart; 5871 mOldText = edit.mOldText + mOldText; 5872 mNewCursorPos = edit.mNewCursorPos; 5873 return true; 5874 } 5875 5876 private boolean mergeReplaceWith(EditOperation edit) { 5877 // Replacements can merge only with adjacent inserts. 5878 if (edit.mType != TYPE_INSERT || getNewTextEnd() != edit.mNewTextStart) { 5879 return false; 5880 } 5881 mOldText += edit.mOldText; 5882 mNewText += edit.mNewText; 5883 mNewCursorPos = edit.mNewCursorPos; 5884 return true; 5885 } 5886 5887 /** 5888 * Forcibly creates a single merged edit operation by simulating the entire text 5889 * contents being replaced. 5890 */ 5891 public void forceMergeWith(EditOperation edit) { 5892 if (DEBUG_UNDO) Log.d(TAG, "forceMerge"); 5893 Editor editor = getOwnerData(); 5894 5895 // Copy the text of the current field. 5896 // NOTE: Using StringBuilder instead of SpannableStringBuilder would be somewhat faster, 5897 // but would require two parallel implementations of modifyText() because Editable and 5898 // StringBuilder do not share an interface for replace/delete/insert. 5899 Editable editable = (Editable) editor.mTextView.getText(); 5900 Editable originalText = new SpannableStringBuilder(editable.toString()); 5901 5902 // Roll back the last operation. 5903 modifyText(originalText, mNewTextStart, getNewTextEnd(), mOldText, mOldTextStart, 5904 mOldCursorPos); 5905 5906 // Clone the text again and apply the new operation. 5907 Editable finalText = new SpannableStringBuilder(editable.toString()); 5908 modifyText(finalText, edit.mOldTextStart, edit.getOldTextEnd(), edit.mNewText, 5909 edit.mNewTextStart, edit.mNewCursorPos); 5910 5911 // Convert this operation into a non-mergeable replacement of the entire string. 5912 mType = TYPE_REPLACE; 5913 mNewText = finalText.toString(); 5914 mNewTextStart = 0; 5915 mOldText = originalText.toString(); 5916 mOldTextStart = 0; 5917 mNewCursorPos = edit.mNewCursorPos; 5918 // mOldCursorPos is unchanged. 5919 } 5920 5921 private static void modifyText(Editable text, int deleteFrom, int deleteTo, 5922 CharSequence newText, int newTextInsertAt, int newCursorPos) { 5923 // Apply the edit if it is still valid. 5924 if (isValidRange(text, deleteFrom, deleteTo) && 5925 newTextInsertAt <= text.length() - (deleteTo - deleteFrom)) { 5926 if (deleteFrom != deleteTo) { 5927 text.delete(deleteFrom, deleteTo); 5928 } 5929 if (newText.length() != 0) { 5930 text.insert(newTextInsertAt, newText); 5931 } 5932 } 5933 // Restore the cursor position. If there wasn't an old cursor (newCursorPos == -1) then 5934 // don't explicitly set it and rely on SpannableStringBuilder to position it. 5935 // TODO: Select all the text that was undone. 5936 if (0 <= newCursorPos && newCursorPos <= text.length()) { 5937 Selection.setSelection(text, newCursorPos); 5938 } 5939 } 5940 5941 private String getTypeString() { 5942 switch (mType) { 5943 case TYPE_INSERT: 5944 return "insert"; 5945 case TYPE_DELETE: 5946 return "delete"; 5947 case TYPE_REPLACE: 5948 return "replace"; 5949 default: 5950 return ""; 5951 } 5952 } 5953 5954 @Override 5955 public String toString() { 5956 return "[mType=" + getTypeString() + ", " + 5957 "mOldText=" + mOldText + ", " + 5958 "mOldTextStart=" + mOldTextStart + ", " + 5959 "mNewText=" + mNewText + ", " + 5960 "mNewTextStart=" + mNewTextStart + ", " + 5961 "mOldCursorPos=" + mOldCursorPos + ", " + 5962 "mNewCursorPos=" + mNewCursorPos + "]"; 5963 } 5964 5965 public static final Parcelable.ClassLoaderCreator<EditOperation> CREATOR 5966 = new Parcelable.ClassLoaderCreator<EditOperation>() { 5967 @Override 5968 public EditOperation createFromParcel(Parcel in) { 5969 return new EditOperation(in, null); 5970 } 5971 5972 @Override 5973 public EditOperation createFromParcel(Parcel in, ClassLoader loader) { 5974 return new EditOperation(in, loader); 5975 } 5976 5977 @Override 5978 public EditOperation[] newArray(int size) { 5979 return new EditOperation[size]; 5980 } 5981 }; 5982 } 5983 5984 /** 5985 * A helper for enabling and handling "PROCESS_TEXT" menu actions. 5986 * These allow external applications to plug into currently selected text. 5987 */ 5988 static final class ProcessTextIntentActionsHandler { 5989 5990 private final Editor mEditor; 5991 private final TextView mTextView; 5992 private final PackageManager mPackageManager; 5993 private final SparseArray<Intent> mAccessibilityIntents = new SparseArray<Intent>(); 5994 private final SparseArray<AccessibilityNodeInfo.AccessibilityAction> mAccessibilityActions 5995 = new SparseArray<AccessibilityNodeInfo.AccessibilityAction>(); 5996 5997 private ProcessTextIntentActionsHandler(Editor editor) { 5998 mEditor = Preconditions.checkNotNull(editor); 5999 mTextView = Preconditions.checkNotNull(mEditor.mTextView); 6000 mPackageManager = Preconditions.checkNotNull( 6001 mTextView.getContext().getPackageManager()); 6002 } 6003 6004 /** 6005 * Adds "PROCESS_TEXT" menu items to the specified menu. 6006 */ 6007 public void onInitializeMenu(Menu menu) { 6008 int i = 0; 6009 for (ResolveInfo resolveInfo : getSupportedActivities()) { 6010 menu.add(Menu.NONE, Menu.NONE, 6011 Editor.MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START + i++, 6012 getLabel(resolveInfo)) 6013 .setIntent(createProcessTextIntentForResolveInfo(resolveInfo)) 6014 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 6015 } 6016 } 6017 6018 /** 6019 * Performs a "PROCESS_TEXT" action if there is one associated with the specified 6020 * menu item. 6021 * 6022 * @return True if the action was performed, false otherwise. 6023 */ 6024 public boolean performMenuItemAction(MenuItem item) { 6025 return fireIntent(item.getIntent()); 6026 } 6027 6028 /** 6029 * Initializes and caches "PROCESS_TEXT" accessibility actions. 6030 */ 6031 public void initializeAccessibilityActions() { 6032 mAccessibilityIntents.clear(); 6033 mAccessibilityActions.clear(); 6034 int i = 0; 6035 for (ResolveInfo resolveInfo : getSupportedActivities()) { 6036 int actionId = TextView.ACCESSIBILITY_ACTION_PROCESS_TEXT_START_ID + i++; 6037 mAccessibilityActions.put( 6038 actionId, 6039 new AccessibilityNodeInfo.AccessibilityAction( 6040 actionId, getLabel(resolveInfo))); 6041 mAccessibilityIntents.put( 6042 actionId, createProcessTextIntentForResolveInfo(resolveInfo)); 6043 } 6044 } 6045 6046 /** 6047 * Adds "PROCESS_TEXT" accessibility actions to the specified accessibility node info. 6048 * NOTE: This needs a prior call to {@link #initializeAccessibilityActions()} to make the 6049 * latest accessibility actions available for this call. 6050 */ 6051 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo nodeInfo) { 6052 for (int i = 0; i < mAccessibilityActions.size(); i++) { 6053 nodeInfo.addAction(mAccessibilityActions.valueAt(i)); 6054 } 6055 } 6056 6057 /** 6058 * Performs a "PROCESS_TEXT" action if there is one associated with the specified 6059 * accessibility action id. 6060 * 6061 * @return True if the action was performed, false otherwise. 6062 */ 6063 public boolean performAccessibilityAction(int actionId) { 6064 return fireIntent(mAccessibilityIntents.get(actionId)); 6065 } 6066 6067 private boolean fireIntent(Intent intent) { 6068 if (intent != null && Intent.ACTION_PROCESS_TEXT.equals(intent.getAction())) { 6069 intent.putExtra(Intent.EXTRA_PROCESS_TEXT, mTextView.getSelectedText()); 6070 mEditor.mPreserveSelection = true; 6071 mTextView.startActivityForResult(intent, TextView.PROCESS_TEXT_REQUEST_CODE); 6072 return true; 6073 } 6074 return false; 6075 } 6076 6077 private List<ResolveInfo> getSupportedActivities() { 6078 PackageManager packageManager = mTextView.getContext().getPackageManager(); 6079 return packageManager.queryIntentActivities(createProcessTextIntent(), 0); 6080 } 6081 6082 private Intent createProcessTextIntentForResolveInfo(ResolveInfo info) { 6083 return createProcessTextIntent() 6084 .putExtra(Intent.EXTRA_PROCESS_TEXT_READONLY, !mTextView.isTextEditable()) 6085 .setClassName(info.activityInfo.packageName, info.activityInfo.name); 6086 } 6087 6088 private Intent createProcessTextIntent() { 6089 return new Intent() 6090 .setAction(Intent.ACTION_PROCESS_TEXT) 6091 .setType("text/plain"); 6092 } 6093 6094 private CharSequence getLabel(ResolveInfo resolveInfo) { 6095 return resolveInfo.loadLabel(mPackageManager); 6096 } 6097 } 6098} 6099