Editor.java revision a4e39c4f596ebcc3769afdc358d78386c9f6f63b
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.LocaleList; 46import android.os.Parcel; 47import android.os.Parcelable; 48import android.os.ParcelableParcel; 49import android.os.SystemClock; 50import android.provider.Settings; 51import android.text.DynamicLayout; 52import android.text.Editable; 53import android.text.InputFilter; 54import android.text.InputType; 55import android.text.Layout; 56import android.text.ParcelableSpan; 57import android.text.Selection; 58import android.text.SpanWatcher; 59import android.text.Spannable; 60import android.text.SpannableStringBuilder; 61import android.text.Spanned; 62import android.text.StaticLayout; 63import android.text.TextUtils; 64import android.text.method.KeyListener; 65import android.text.method.MetaKeyKeyListener; 66import android.text.method.MovementMethod; 67import android.text.method.WordIterator; 68import android.text.style.EasyEditSpan; 69import android.text.style.SuggestionRangeSpan; 70import android.text.style.SuggestionSpan; 71import android.text.style.TextAppearanceSpan; 72import android.text.style.URLSpan; 73import android.util.ArraySet; 74import android.util.DisplayMetrics; 75import android.util.Log; 76import android.util.SparseArray; 77import android.view.ActionMode; 78import android.view.ActionMode.Callback; 79import android.view.ContextMenu; 80import android.view.ContextThemeWrapper; 81import android.view.DisplayListCanvas; 82import android.view.DragAndDropPermissions; 83import android.view.DragEvent; 84import android.view.Gravity; 85import android.view.HapticFeedbackConstants; 86import android.view.InputDevice; 87import android.view.LayoutInflater; 88import android.view.Menu; 89import android.view.MenuItem; 90import android.view.MotionEvent; 91import android.view.RenderNode; 92import android.view.SubMenu; 93import android.view.View; 94import android.view.View.DragShadowBuilder; 95import android.view.View.OnClickListener; 96import android.view.ViewConfiguration; 97import android.view.ViewGroup; 98import android.view.ViewGroup.LayoutParams; 99import android.view.ViewTreeObserver; 100import android.view.WindowManager; 101import android.view.accessibility.AccessibilityNodeInfo; 102import android.view.inputmethod.CorrectionInfo; 103import android.view.inputmethod.CursorAnchorInfo; 104import android.view.inputmethod.EditorInfo; 105import android.view.inputmethod.ExtractedText; 106import android.view.inputmethod.ExtractedTextRequest; 107import android.view.inputmethod.InputConnection; 108import android.view.inputmethod.InputMethodManager; 109import android.view.textclassifier.TextClassification; 110import android.view.textclassifier.TextLinks; 111import android.widget.AdapterView.OnItemClickListener; 112import android.widget.TextView.Drawables; 113import android.widget.TextView.OnEditorActionListener; 114 115import com.android.internal.annotations.VisibleForTesting; 116import com.android.internal.logging.MetricsLogger; 117import com.android.internal.logging.nano.MetricsProto.MetricsEvent; 118import com.android.internal.util.ArrayUtils; 119import com.android.internal.util.GrowingArrayUtils; 120import com.android.internal.util.Preconditions; 121import com.android.internal.widget.EditableInputConnection; 122 123import java.lang.annotation.Retention; 124import java.lang.annotation.RetentionPolicy; 125import java.text.BreakIterator; 126import java.util.ArrayList; 127import java.util.Arrays; 128import java.util.Comparator; 129import java.util.HashMap; 130import java.util.List; 131import java.util.Map; 132 133/** 134 * Helper class used by TextView to handle editable text views. 135 * 136 * @hide 137 */ 138public class Editor { 139 private static final String TAG = "Editor"; 140 private static final boolean DEBUG_UNDO = false; 141 // Specifies whether to use or not the magnifier when pressing the insertion or selection 142 // handles. 143 private static final boolean FLAG_USE_MAGNIFIER = true; 144 145 static final int BLINK = 500; 146 private static final int DRAG_SHADOW_MAX_TEXT_LENGTH = 20; 147 private static final float LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS = 0.5f; 148 private static final int UNSET_X_VALUE = -1; 149 private static final int UNSET_LINE = -1; 150 // Tag used when the Editor maintains its own separate UndoManager. 151 private static final String UNDO_OWNER_TAG = "Editor"; 152 153 // Ordering constants used to place the Action Mode or context menu items in their menu. 154 private static final int MENU_ITEM_ORDER_ASSIST = 0; 155 private static final int MENU_ITEM_ORDER_UNDO = 2; 156 private static final int MENU_ITEM_ORDER_REDO = 3; 157 private static final int MENU_ITEM_ORDER_CUT = 4; 158 private static final int MENU_ITEM_ORDER_COPY = 5; 159 private static final int MENU_ITEM_ORDER_PASTE = 6; 160 private static final int MENU_ITEM_ORDER_SHARE = 7; 161 private static final int MENU_ITEM_ORDER_SELECT_ALL = 8; 162 private static final int MENU_ITEM_ORDER_REPLACE = 9; 163 private static final int MENU_ITEM_ORDER_AUTOFILL = 10; 164 private static final int MENU_ITEM_ORDER_PASTE_AS_PLAIN_TEXT = 11; 165 private static final int MENU_ITEM_ORDER_SECONDARY_ASSIST_ACTIONS_START = 50; 166 private static final int MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START = 100; 167 168 @IntDef({MagnifierHandleTrigger.SELECTION_START, 169 MagnifierHandleTrigger.SELECTION_END, 170 MagnifierHandleTrigger.INSERTION}) 171 @Retention(RetentionPolicy.SOURCE) 172 private @interface MagnifierHandleTrigger { 173 int INSERTION = 0; 174 int SELECTION_START = 1; 175 int SELECTION_END = 2; 176 } 177 178 @IntDef({TextActionMode.SELECTION, TextActionMode.INSERTION, TextActionMode.TEXT_LINK}) 179 @interface TextActionMode { 180 int SELECTION = 0; 181 int INSERTION = 1; 182 int TEXT_LINK = 2; 183 } 184 185 // Each Editor manages its own undo stack. 186 private final UndoManager mUndoManager = new UndoManager(); 187 private UndoOwner mUndoOwner = mUndoManager.getOwner(UNDO_OWNER_TAG, this); 188 final UndoInputFilter mUndoInputFilter = new UndoInputFilter(this); 189 boolean mAllowUndo = true; 190 191 private final MetricsLogger mMetricsLogger = new MetricsLogger(); 192 193 // Cursor Controllers. 194 private InsertionPointCursorController mInsertionPointCursorController; 195 SelectionModifierCursorController mSelectionModifierCursorController; 196 // Action mode used when text is selected or when actions on an insertion cursor are triggered. 197 private ActionMode mTextActionMode; 198 private boolean mInsertionControllerEnabled; 199 private boolean mSelectionControllerEnabled; 200 201 private final boolean mHapticTextHandleEnabled; 202 203 private final Magnifier mMagnifier; 204 private final Runnable mUpdateMagnifierRunnable = new Runnable() { 205 @Override 206 public void run() { 207 mMagnifier.update(); 208 } 209 }; 210 // Update the magnifier contents whenever anything in the view hierarchy is updated. 211 // Note: this only captures UI thread-visible changes, so it's a known issue that an animating 212 // VectorDrawable or Ripple animation will not trigger capture, since they're owned by 213 // RenderThread. 214 private final ViewTreeObserver.OnDrawListener mMagnifierOnDrawListener = 215 new ViewTreeObserver.OnDrawListener() { 216 @Override 217 public void onDraw() { 218 if (mMagnifier != null) { 219 // Posting the method will ensure that updating the magnifier contents will 220 // happen right after the rendering of the current frame. 221 mTextView.post(mUpdateMagnifierRunnable); 222 } 223 } 224 }; 225 226 // Used to highlight a word when it is corrected by the IME 227 private CorrectionHighlighter mCorrectionHighlighter; 228 229 InputContentType mInputContentType; 230 InputMethodState mInputMethodState; 231 232 private static class TextRenderNode { 233 // Render node has 3 recording states: 234 // 1. Recorded operations are valid. 235 // #needsRecord() returns false, but needsToBeShifted is false. 236 // 2. Recorded operations are not valid, but just the position needed to be updated. 237 // #needsRecord() returns false, but needsToBeShifted is true. 238 // 3. Recorded operations are not valid. Need to record operations. #needsRecord() returns 239 // true. 240 RenderNode renderNode; 241 boolean isDirty; 242 // Becomes true when recorded operations can be reused, but the position has to be updated. 243 boolean needsToBeShifted; 244 public TextRenderNode(String name) { 245 renderNode = RenderNode.create(name, null); 246 isDirty = true; 247 needsToBeShifted = true; 248 } 249 boolean needsRecord() { 250 return isDirty || !renderNode.isValid(); 251 } 252 } 253 private TextRenderNode[] mTextRenderNodes; 254 255 boolean mFrozenWithFocus; 256 boolean mSelectionMoved; 257 boolean mTouchFocusSelected; 258 259 KeyListener mKeyListener; 260 int mInputType = EditorInfo.TYPE_NULL; 261 262 boolean mDiscardNextActionUp; 263 boolean mIgnoreActionUpEvent; 264 265 private long mShowCursor; 266 private boolean mRenderCursorRegardlessTiming; 267 private Blink mBlink; 268 269 boolean mCursorVisible = true; 270 boolean mSelectAllOnFocus; 271 boolean mTextIsSelectable; 272 273 CharSequence mError; 274 boolean mErrorWasChanged; 275 private ErrorPopup mErrorPopup; 276 277 /** 278 * This flag is set if the TextView tries to display an error before it 279 * is attached to the window (so its position is still unknown). 280 * It causes the error to be shown later, when onAttachedToWindow() 281 * is called. 282 */ 283 private boolean mShowErrorAfterAttach; 284 285 boolean mInBatchEditControllers; 286 boolean mShowSoftInputOnFocus = true; 287 private boolean mPreserveSelection; 288 private boolean mRestartActionModeOnNextRefresh; 289 290 private SelectionActionModeHelper mSelectionActionModeHelper; 291 292 boolean mIsBeingLongClicked; 293 294 private SuggestionsPopupWindow mSuggestionsPopupWindow; 295 SuggestionRangeSpan mSuggestionRangeSpan; 296 private Runnable mShowSuggestionRunnable; 297 298 Drawable mDrawableForCursor = null; 299 300 private Drawable mSelectHandleLeft; 301 private Drawable mSelectHandleRight; 302 private Drawable mSelectHandleCenter; 303 304 // Global listener that detects changes in the global position of the TextView 305 private PositionListener mPositionListener; 306 307 private float mLastDownPositionX, mLastDownPositionY; 308 private float mLastUpPositionX, mLastUpPositionY; 309 private float mContextMenuAnchorX, mContextMenuAnchorY; 310 Callback mCustomSelectionActionModeCallback; 311 Callback mCustomInsertionActionModeCallback; 312 313 // Set when this TextView gained focus with some text selected. Will start selection mode. 314 boolean mCreatedWithASelection; 315 316 // Indicates the current tap state (first tap, double tap, or triple click). 317 private int mTapState = TAP_STATE_INITIAL; 318 private long mLastTouchUpTime = 0; 319 private static final int TAP_STATE_INITIAL = 0; 320 private static final int TAP_STATE_FIRST_TAP = 1; 321 private static final int TAP_STATE_DOUBLE_TAP = 2; 322 // Only for mouse input. 323 private static final int TAP_STATE_TRIPLE_CLICK = 3; 324 325 // The button state as of the last time #onTouchEvent is called. 326 private int mLastButtonState; 327 328 private Runnable mInsertionActionModeRunnable; 329 330 // The span controller helps monitoring the changes to which the Editor needs to react: 331 // - EasyEditSpans, for which we have some UI to display on attach and on hide 332 // - SelectionSpans, for which we need to call updateSelection if an IME is attached 333 private SpanController mSpanController; 334 335 private WordIterator mWordIterator; 336 SpellChecker mSpellChecker; 337 338 // This word iterator is set with text and used to determine word boundaries 339 // when a user is selecting text. 340 private WordIterator mWordIteratorWithText; 341 // Indicate that the text in the word iterator needs to be updated. 342 private boolean mUpdateWordIteratorText; 343 344 private Rect mTempRect; 345 346 private final TextView mTextView; 347 348 final ProcessTextIntentActionsHandler mProcessTextIntentActionsHandler; 349 350 private final CursorAnchorInfoNotifier mCursorAnchorInfoNotifier = 351 new CursorAnchorInfoNotifier(); 352 353 private final Runnable mShowFloatingToolbar = new Runnable() { 354 @Override 355 public void run() { 356 if (mTextActionMode != null) { 357 mTextActionMode.hide(0); // hide off. 358 } 359 } 360 }; 361 362 boolean mIsInsertionActionModeStartPending = false; 363 364 private final SuggestionHelper mSuggestionHelper = new SuggestionHelper(); 365 366 Editor(TextView textView) { 367 mTextView = textView; 368 // Synchronize the filter list, which places the undo input filter at the end. 369 mTextView.setFilters(mTextView.getFilters()); 370 mProcessTextIntentActionsHandler = new ProcessTextIntentActionsHandler(this); 371 mHapticTextHandleEnabled = mTextView.getContext().getResources().getBoolean( 372 com.android.internal.R.bool.config_enableHapticTextHandle); 373 374 mMagnifier = FLAG_USE_MAGNIFIER ? new Magnifier(mTextView) : null; 375 } 376 377 ParcelableParcel saveInstanceState() { 378 ParcelableParcel state = new ParcelableParcel(getClass().getClassLoader()); 379 Parcel parcel = state.getParcel(); 380 mUndoManager.saveInstanceState(parcel); 381 mUndoInputFilter.saveInstanceState(parcel); 382 return state; 383 } 384 385 void restoreInstanceState(ParcelableParcel state) { 386 Parcel parcel = state.getParcel(); 387 mUndoManager.restoreInstanceState(parcel, state.getClassLoader()); 388 mUndoInputFilter.restoreInstanceState(parcel); 389 // Re-associate this object as the owner of undo state. 390 mUndoOwner = mUndoManager.getOwner(UNDO_OWNER_TAG, this); 391 } 392 393 /** 394 * Forgets all undo and redo operations for this Editor. 395 */ 396 void forgetUndoRedo() { 397 UndoOwner[] owners = { mUndoOwner }; 398 mUndoManager.forgetUndos(owners, -1 /* all */); 399 mUndoManager.forgetRedos(owners, -1 /* all */); 400 } 401 402 boolean canUndo() { 403 UndoOwner[] owners = { mUndoOwner }; 404 return mAllowUndo && mUndoManager.countUndos(owners) > 0; 405 } 406 407 boolean canRedo() { 408 UndoOwner[] owners = { mUndoOwner }; 409 return mAllowUndo && mUndoManager.countRedos(owners) > 0; 410 } 411 412 void undo() { 413 if (!mAllowUndo) { 414 return; 415 } 416 UndoOwner[] owners = { mUndoOwner }; 417 mUndoManager.undo(owners, 1); // Undo 1 action. 418 } 419 420 void redo() { 421 if (!mAllowUndo) { 422 return; 423 } 424 UndoOwner[] owners = { mUndoOwner }; 425 mUndoManager.redo(owners, 1); // Redo 1 action. 426 } 427 428 void replace() { 429 if (mSuggestionsPopupWindow == null) { 430 mSuggestionsPopupWindow = new SuggestionsPopupWindow(); 431 } 432 hideCursorAndSpanControllers(); 433 mSuggestionsPopupWindow.show(); 434 435 int middle = (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 436 Selection.setSelection((Spannable) mTextView.getText(), middle); 437 } 438 439 void onAttachedToWindow() { 440 if (mShowErrorAfterAttach) { 441 showError(); 442 mShowErrorAfterAttach = false; 443 } 444 445 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 446 if (observer.isAlive()) { 447 // No need to create the controller. 448 // The get method will add the listener on controller creation. 449 if (mInsertionPointCursorController != null) { 450 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 451 } 452 if (mSelectionModifierCursorController != null) { 453 mSelectionModifierCursorController.resetTouchOffsets(); 454 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 455 } 456 if (FLAG_USE_MAGNIFIER) { 457 observer.addOnDrawListener(mMagnifierOnDrawListener); 458 } 459 } 460 461 updateSpellCheckSpans(0, mTextView.getText().length(), 462 true /* create the spell checker if needed */); 463 464 if (mTextView.hasSelection()) { 465 refreshTextActionMode(); 466 } 467 468 getPositionListener().addSubscriber(mCursorAnchorInfoNotifier, true); 469 resumeBlink(); 470 } 471 472 void onDetachedFromWindow() { 473 getPositionListener().removeSubscriber(mCursorAnchorInfoNotifier); 474 475 if (mError != null) { 476 hideError(); 477 } 478 479 suspendBlink(); 480 481 if (mInsertionPointCursorController != null) { 482 mInsertionPointCursorController.onDetached(); 483 } 484 485 if (mSelectionModifierCursorController != null) { 486 mSelectionModifierCursorController.onDetached(); 487 } 488 489 if (mShowSuggestionRunnable != null) { 490 mTextView.removeCallbacks(mShowSuggestionRunnable); 491 } 492 493 // Cancel the single tap delayed runnable. 494 if (mInsertionActionModeRunnable != null) { 495 mTextView.removeCallbacks(mInsertionActionModeRunnable); 496 } 497 498 mTextView.removeCallbacks(mShowFloatingToolbar); 499 500 discardTextDisplayLists(); 501 502 if (mSpellChecker != null) { 503 mSpellChecker.closeSession(); 504 // Forces the creation of a new SpellChecker next time this window is created. 505 // Will handle the cases where the settings has been changed in the meantime. 506 mSpellChecker = null; 507 } 508 509 if (FLAG_USE_MAGNIFIER) { 510 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 511 if (observer.isAlive()) { 512 observer.removeOnDrawListener(mMagnifierOnDrawListener); 513 } 514 } 515 516 hideCursorAndSpanControllers(); 517 stopTextActionModeWithPreservingSelection(); 518 } 519 520 private void discardTextDisplayLists() { 521 if (mTextRenderNodes != null) { 522 for (int i = 0; i < mTextRenderNodes.length; i++) { 523 RenderNode displayList = mTextRenderNodes[i] != null 524 ? mTextRenderNodes[i].renderNode : null; 525 if (displayList != null && displayList.isValid()) { 526 displayList.discardDisplayList(); 527 } 528 } 529 } 530 } 531 532 private void showError() { 533 if (mTextView.getWindowToken() == null) { 534 mShowErrorAfterAttach = true; 535 return; 536 } 537 538 if (mErrorPopup == null) { 539 LayoutInflater inflater = LayoutInflater.from(mTextView.getContext()); 540 final TextView err = (TextView) inflater.inflate( 541 com.android.internal.R.layout.textview_hint, null); 542 543 final float scale = mTextView.getResources().getDisplayMetrics().density; 544 mErrorPopup = 545 new ErrorPopup(err, (int) (200 * scale + 0.5f), (int) (50 * scale + 0.5f)); 546 mErrorPopup.setFocusable(false); 547 // The user is entering text, so the input method is needed. We 548 // don't want the popup to be displayed on top of it. 549 mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); 550 } 551 552 TextView tv = (TextView) mErrorPopup.getContentView(); 553 chooseSize(mErrorPopup, mError, tv); 554 tv.setText(mError); 555 556 mErrorPopup.showAsDropDown(mTextView, getErrorX(), getErrorY(), 557 Gravity.TOP | Gravity.LEFT); 558 mErrorPopup.fixDirection(mErrorPopup.isAboveAnchor()); 559 } 560 561 public void setError(CharSequence error, Drawable icon) { 562 mError = TextUtils.stringOrSpannedString(error); 563 mErrorWasChanged = true; 564 565 if (mError == null) { 566 setErrorIcon(null); 567 if (mErrorPopup != null) { 568 if (mErrorPopup.isShowing()) { 569 mErrorPopup.dismiss(); 570 } 571 572 mErrorPopup = null; 573 } 574 mShowErrorAfterAttach = false; 575 } else { 576 setErrorIcon(icon); 577 if (mTextView.isFocused()) { 578 showError(); 579 } 580 } 581 } 582 583 private void setErrorIcon(Drawable icon) { 584 Drawables dr = mTextView.mDrawables; 585 if (dr == null) { 586 mTextView.mDrawables = dr = new Drawables(mTextView.getContext()); 587 } 588 dr.setErrorDrawable(icon, mTextView); 589 590 mTextView.resetResolvedDrawables(); 591 mTextView.invalidate(); 592 mTextView.requestLayout(); 593 } 594 595 private void hideError() { 596 if (mErrorPopup != null) { 597 if (mErrorPopup.isShowing()) { 598 mErrorPopup.dismiss(); 599 } 600 } 601 602 mShowErrorAfterAttach = false; 603 } 604 605 /** 606 * Returns the X offset to make the pointy top of the error point 607 * at the middle of the error icon. 608 */ 609 private int getErrorX() { 610 /* 611 * The "25" is the distance between the point and the right edge 612 * of the background 613 */ 614 final float scale = mTextView.getResources().getDisplayMetrics().density; 615 616 final Drawables dr = mTextView.mDrawables; 617 618 final int layoutDirection = mTextView.getLayoutDirection(); 619 int errorX; 620 int offset; 621 switch (layoutDirection) { 622 default: 623 case View.LAYOUT_DIRECTION_LTR: 624 offset = -(dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f); 625 errorX = mTextView.getWidth() - mErrorPopup.getWidth() 626 - mTextView.getPaddingRight() + offset; 627 break; 628 case View.LAYOUT_DIRECTION_RTL: 629 offset = (dr != null ? dr.mDrawableSizeLeft : 0) / 2 - (int) (25 * scale + 0.5f); 630 errorX = mTextView.getPaddingLeft() + offset; 631 break; 632 } 633 return errorX; 634 } 635 636 /** 637 * Returns the Y offset to make the pointy top of the error point 638 * at the bottom of the error icon. 639 */ 640 private int getErrorY() { 641 /* 642 * Compound, not extended, because the icon is not clipped 643 * if the text height is smaller. 644 */ 645 final int compoundPaddingTop = mTextView.getCompoundPaddingTop(); 646 int vspace = mTextView.getBottom() - mTextView.getTop() 647 - mTextView.getCompoundPaddingBottom() - compoundPaddingTop; 648 649 final Drawables dr = mTextView.mDrawables; 650 651 final int layoutDirection = mTextView.getLayoutDirection(); 652 int height; 653 switch (layoutDirection) { 654 default: 655 case View.LAYOUT_DIRECTION_LTR: 656 height = (dr != null ? dr.mDrawableHeightRight : 0); 657 break; 658 case View.LAYOUT_DIRECTION_RTL: 659 height = (dr != null ? dr.mDrawableHeightLeft : 0); 660 break; 661 } 662 663 int icontop = compoundPaddingTop + (vspace - height) / 2; 664 665 /* 666 * The "2" is the distance between the point and the top edge 667 * of the background. 668 */ 669 final float scale = mTextView.getResources().getDisplayMetrics().density; 670 return icontop + height - mTextView.getHeight() - (int) (2 * scale + 0.5f); 671 } 672 673 void createInputContentTypeIfNeeded() { 674 if (mInputContentType == null) { 675 mInputContentType = new InputContentType(); 676 } 677 } 678 679 void createInputMethodStateIfNeeded() { 680 if (mInputMethodState == null) { 681 mInputMethodState = new InputMethodState(); 682 } 683 } 684 685 private boolean isCursorVisible() { 686 // The default value is true, even when there is no associated Editor 687 return mCursorVisible && mTextView.isTextEditable(); 688 } 689 690 boolean shouldRenderCursor() { 691 if (!isCursorVisible()) { 692 return false; 693 } 694 if (mRenderCursorRegardlessTiming) { 695 return true; 696 } 697 final long showCursorDelta = SystemClock.uptimeMillis() - mShowCursor; 698 return showCursorDelta % (2 * BLINK) < BLINK; 699 } 700 701 void prepareCursorControllers() { 702 boolean windowSupportsHandles = false; 703 704 ViewGroup.LayoutParams params = mTextView.getRootView().getLayoutParams(); 705 if (params instanceof WindowManager.LayoutParams) { 706 WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params; 707 windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW 708 || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW; 709 } 710 711 boolean enabled = windowSupportsHandles && mTextView.getLayout() != null; 712 mInsertionControllerEnabled = enabled && isCursorVisible(); 713 mSelectionControllerEnabled = enabled && mTextView.textCanBeSelected(); 714 715 if (!mInsertionControllerEnabled) { 716 hideInsertionPointCursorController(); 717 if (mInsertionPointCursorController != null) { 718 mInsertionPointCursorController.onDetached(); 719 mInsertionPointCursorController = null; 720 } 721 } 722 723 if (!mSelectionControllerEnabled) { 724 stopTextActionMode(); 725 if (mSelectionModifierCursorController != null) { 726 mSelectionModifierCursorController.onDetached(); 727 mSelectionModifierCursorController = null; 728 } 729 } 730 } 731 732 void hideInsertionPointCursorController() { 733 if (mInsertionPointCursorController != null) { 734 mInsertionPointCursorController.hide(); 735 } 736 } 737 738 /** 739 * Hides the insertion and span controllers. 740 */ 741 void hideCursorAndSpanControllers() { 742 hideCursorControllers(); 743 hideSpanControllers(); 744 } 745 746 private void hideSpanControllers() { 747 if (mSpanController != null) { 748 mSpanController.hide(); 749 } 750 } 751 752 private void hideCursorControllers() { 753 // When mTextView is not ExtractEditText, we need to distinguish two kinds of focus-lost. 754 // One is the true focus lost where suggestions pop-up (if any) should be dismissed, and the 755 // other is an side effect of showing the suggestions pop-up itself. We use isShowingUp() 756 // to distinguish one from the other. 757 if (mSuggestionsPopupWindow != null && ((mTextView.isInExtractedMode()) 758 || !mSuggestionsPopupWindow.isShowingUp())) { 759 // Should be done before hide insertion point controller since it triggers a show of it 760 mSuggestionsPopupWindow.hide(); 761 } 762 hideInsertionPointCursorController(); 763 } 764 765 /** 766 * Create new SpellCheckSpans on the modified region. 767 */ 768 private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) { 769 // Remove spans whose adjacent characters are text not punctuation 770 mTextView.removeAdjacentSuggestionSpans(start); 771 mTextView.removeAdjacentSuggestionSpans(end); 772 773 if (mTextView.isTextEditable() && mTextView.isSuggestionsEnabled() 774 && !(mTextView.isInExtractedMode())) { 775 if (mSpellChecker == null && createSpellChecker) { 776 mSpellChecker = new SpellChecker(mTextView); 777 } 778 if (mSpellChecker != null) { 779 mSpellChecker.spellCheck(start, end); 780 } 781 } 782 } 783 784 void onScreenStateChanged(int screenState) { 785 switch (screenState) { 786 case View.SCREEN_STATE_ON: 787 resumeBlink(); 788 break; 789 case View.SCREEN_STATE_OFF: 790 suspendBlink(); 791 break; 792 } 793 } 794 795 private void suspendBlink() { 796 if (mBlink != null) { 797 mBlink.cancel(); 798 } 799 } 800 801 private void resumeBlink() { 802 if (mBlink != null) { 803 mBlink.uncancel(); 804 makeBlink(); 805 } 806 } 807 808 void adjustInputType(boolean password, boolean passwordInputType, 809 boolean webPasswordInputType, boolean numberPasswordInputType) { 810 // mInputType has been set from inputType, possibly modified by mInputMethod. 811 // Specialize mInputType to [web]password if we have a text class and the original input 812 // type was a password. 813 if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 814 if (password || passwordInputType) { 815 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 816 | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD; 817 } 818 if (webPasswordInputType) { 819 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 820 | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 821 } 822 } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) { 823 if (numberPasswordInputType) { 824 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 825 | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD; 826 } 827 } 828 } 829 830 private void chooseSize(@NonNull PopupWindow pop, @NonNull CharSequence text, 831 @NonNull TextView tv) { 832 final int wid = tv.getPaddingLeft() + tv.getPaddingRight(); 833 final int ht = tv.getPaddingTop() + tv.getPaddingBottom(); 834 835 final int defaultWidthInPixels = mTextView.getResources().getDimensionPixelSize( 836 com.android.internal.R.dimen.textview_error_popup_default_width); 837 final StaticLayout l = StaticLayout.Builder.obtain(text, 0, text.length(), tv.getPaint(), 838 defaultWidthInPixels) 839 .setUseLineSpacingFromFallbacks(tv.mUseFallbackLineSpacing) 840 .build(); 841 842 float max = 0; 843 for (int i = 0; i < l.getLineCount(); i++) { 844 max = Math.max(max, l.getLineWidth(i)); 845 } 846 847 /* 848 * Now set the popup size to be big enough for the text plus the border capped 849 * to DEFAULT_MAX_POPUP_WIDTH 850 */ 851 pop.setWidth(wid + (int) Math.ceil(max)); 852 pop.setHeight(ht + l.getHeight()); 853 } 854 855 void setFrame() { 856 if (mErrorPopup != null) { 857 TextView tv = (TextView) mErrorPopup.getContentView(); 858 chooseSize(mErrorPopup, mError, tv); 859 mErrorPopup.update(mTextView, getErrorX(), getErrorY(), 860 mErrorPopup.getWidth(), mErrorPopup.getHeight()); 861 } 862 } 863 864 private int getWordStart(int offset) { 865 // FIXME - For this and similar methods we're not doing anything to check if there's 866 // a LocaleSpan in the text, this may be something we should try handling or checking for. 867 int retOffset = getWordIteratorWithText().prevBoundary(offset); 868 if (getWordIteratorWithText().isOnPunctuation(retOffset)) { 869 // On punctuation boundary or within group of punctuation, find punctuation start. 870 retOffset = getWordIteratorWithText().getPunctuationBeginning(offset); 871 } else { 872 // Not on a punctuation boundary, find the word start. 873 retOffset = getWordIteratorWithText().getPrevWordBeginningOnTwoWordsBoundary(offset); 874 } 875 if (retOffset == BreakIterator.DONE) { 876 return offset; 877 } 878 return retOffset; 879 } 880 881 private int getWordEnd(int offset) { 882 int retOffset = getWordIteratorWithText().nextBoundary(offset); 883 if (getWordIteratorWithText().isAfterPunctuation(retOffset)) { 884 // On punctuation boundary or within group of punctuation, find punctuation end. 885 retOffset = getWordIteratorWithText().getPunctuationEnd(offset); 886 } else { 887 // Not on a punctuation boundary, find the word end. 888 retOffset = getWordIteratorWithText().getNextWordEndOnTwoWordBoundary(offset); 889 } 890 if (retOffset == BreakIterator.DONE) { 891 return offset; 892 } 893 return retOffset; 894 } 895 896 private boolean needsToSelectAllToSelectWordOrParagraph() { 897 if (mTextView.hasPasswordTransformationMethod()) { 898 // Always select all on a password field. 899 // Cut/copy menu entries are not available for passwords, but being able to select all 900 // is however useful to delete or paste to replace the entire content. 901 return true; 902 } 903 904 int inputType = mTextView.getInputType(); 905 int klass = inputType & InputType.TYPE_MASK_CLASS; 906 int variation = inputType & InputType.TYPE_MASK_VARIATION; 907 908 // Specific text field types: select the entire text for these 909 if (klass == InputType.TYPE_CLASS_NUMBER 910 || klass == InputType.TYPE_CLASS_PHONE 911 || klass == InputType.TYPE_CLASS_DATETIME 912 || variation == InputType.TYPE_TEXT_VARIATION_URI 913 || variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS 914 || variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS 915 || variation == InputType.TYPE_TEXT_VARIATION_FILTER) { 916 return true; 917 } 918 return false; 919 } 920 921 /** 922 * Adjusts selection to the word under last touch offset. Return true if the operation was 923 * successfully performed. 924 */ 925 boolean selectCurrentWord() { 926 if (!mTextView.canSelectText()) { 927 return false; 928 } 929 930 if (needsToSelectAllToSelectWordOrParagraph()) { 931 return mTextView.selectAllText(); 932 } 933 934 long lastTouchOffsets = getLastTouchOffsets(); 935 final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 936 final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 937 938 // Safety check in case standard touch event handling has been bypassed 939 if (minOffset < 0 || minOffset > mTextView.getText().length()) return false; 940 if (maxOffset < 0 || maxOffset > mTextView.getText().length()) return false; 941 942 int selectionStart, selectionEnd; 943 944 // If a URLSpan (web address, email, phone...) is found at that position, select it. 945 URLSpan[] urlSpans = 946 ((Spanned) mTextView.getText()).getSpans(minOffset, maxOffset, URLSpan.class); 947 if (urlSpans.length >= 1) { 948 URLSpan urlSpan = urlSpans[0]; 949 selectionStart = ((Spanned) mTextView.getText()).getSpanStart(urlSpan); 950 selectionEnd = ((Spanned) mTextView.getText()).getSpanEnd(urlSpan); 951 } else { 952 // FIXME - We should check if there's a LocaleSpan in the text, this may be 953 // something we should try handling or checking for. 954 final WordIterator wordIterator = getWordIterator(); 955 wordIterator.setCharSequence(mTextView.getText(), minOffset, maxOffset); 956 957 selectionStart = wordIterator.getBeginning(minOffset); 958 selectionEnd = wordIterator.getEnd(maxOffset); 959 960 if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE 961 || selectionStart == selectionEnd) { 962 // Possible when the word iterator does not properly handle the text's language 963 long range = getCharClusterRange(minOffset); 964 selectionStart = TextUtils.unpackRangeStartFromLong(range); 965 selectionEnd = TextUtils.unpackRangeEndFromLong(range); 966 } 967 } 968 969 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 970 return selectionEnd > selectionStart; 971 } 972 973 /** 974 * Adjusts selection to the paragraph under last touch offset. Return true if the operation was 975 * successfully performed. 976 */ 977 private boolean selectCurrentParagraph() { 978 if (!mTextView.canSelectText()) { 979 return false; 980 } 981 982 if (needsToSelectAllToSelectWordOrParagraph()) { 983 return mTextView.selectAllText(); 984 } 985 986 long lastTouchOffsets = getLastTouchOffsets(); 987 final int minLastTouchOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 988 final int maxLastTouchOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 989 990 final long paragraphsRange = getParagraphsRange(minLastTouchOffset, maxLastTouchOffset); 991 final int start = TextUtils.unpackRangeStartFromLong(paragraphsRange); 992 final int end = TextUtils.unpackRangeEndFromLong(paragraphsRange); 993 if (start < end) { 994 Selection.setSelection((Spannable) mTextView.getText(), start, end); 995 return true; 996 } 997 return false; 998 } 999 1000 /** 1001 * Get the minimum range of paragraphs that contains startOffset and endOffset. 1002 */ 1003 private long getParagraphsRange(int startOffset, int endOffset) { 1004 final Layout layout = mTextView.getLayout(); 1005 if (layout == null) { 1006 return TextUtils.packRangeInLong(-1, -1); 1007 } 1008 final CharSequence text = mTextView.getText(); 1009 int minLine = layout.getLineForOffset(startOffset); 1010 // Search paragraph start. 1011 while (minLine > 0) { 1012 final int prevLineEndOffset = layout.getLineEnd(minLine - 1); 1013 if (text.charAt(prevLineEndOffset - 1) == '\n') { 1014 break; 1015 } 1016 minLine--; 1017 } 1018 int maxLine = layout.getLineForOffset(endOffset); 1019 // Search paragraph end. 1020 while (maxLine < layout.getLineCount() - 1) { 1021 final int lineEndOffset = layout.getLineEnd(maxLine); 1022 if (text.charAt(lineEndOffset - 1) == '\n') { 1023 break; 1024 } 1025 maxLine++; 1026 } 1027 return TextUtils.packRangeInLong(layout.getLineStart(minLine), layout.getLineEnd(maxLine)); 1028 } 1029 1030 void onLocaleChanged() { 1031 // Will be re-created on demand in getWordIterator and getWordIteratorWithText with the 1032 // proper new locale 1033 mWordIterator = null; 1034 mWordIteratorWithText = null; 1035 } 1036 1037 public WordIterator getWordIterator() { 1038 if (mWordIterator == null) { 1039 mWordIterator = new WordIterator(mTextView.getTextServicesLocale()); 1040 } 1041 return mWordIterator; 1042 } 1043 1044 private WordIterator getWordIteratorWithText() { 1045 if (mWordIteratorWithText == null) { 1046 mWordIteratorWithText = new WordIterator(mTextView.getTextServicesLocale()); 1047 mUpdateWordIteratorText = true; 1048 } 1049 if (mUpdateWordIteratorText) { 1050 // FIXME - Shouldn't copy all of the text as only the area of the text relevant 1051 // to the user's selection is needed. A possible solution would be to 1052 // copy some number N of characters near the selection and then when the 1053 // user approaches N then we'd do another copy of the next N characters. 1054 CharSequence text = mTextView.getText(); 1055 mWordIteratorWithText.setCharSequence(text, 0, text.length()); 1056 mUpdateWordIteratorText = false; 1057 } 1058 return mWordIteratorWithText; 1059 } 1060 1061 private int getNextCursorOffset(int offset, boolean findAfterGivenOffset) { 1062 final Layout layout = mTextView.getLayout(); 1063 if (layout == null) return offset; 1064 return findAfterGivenOffset == layout.isRtlCharAt(offset) 1065 ? layout.getOffsetToLeftOf(offset) : layout.getOffsetToRightOf(offset); 1066 } 1067 1068 private long getCharClusterRange(int offset) { 1069 final int textLength = mTextView.getText().length(); 1070 if (offset < textLength) { 1071 final int clusterEndOffset = getNextCursorOffset(offset, true); 1072 return TextUtils.packRangeInLong( 1073 getNextCursorOffset(clusterEndOffset, false), clusterEndOffset); 1074 } 1075 if (offset - 1 >= 0) { 1076 final int clusterStartOffset = getNextCursorOffset(offset, false); 1077 return TextUtils.packRangeInLong(clusterStartOffset, 1078 getNextCursorOffset(clusterStartOffset, true)); 1079 } 1080 return TextUtils.packRangeInLong(offset, offset); 1081 } 1082 1083 private boolean touchPositionIsInSelection() { 1084 int selectionStart = mTextView.getSelectionStart(); 1085 int selectionEnd = mTextView.getSelectionEnd(); 1086 1087 if (selectionStart == selectionEnd) { 1088 return false; 1089 } 1090 1091 if (selectionStart > selectionEnd) { 1092 int tmp = selectionStart; 1093 selectionStart = selectionEnd; 1094 selectionEnd = tmp; 1095 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 1096 } 1097 1098 SelectionModifierCursorController selectionController = getSelectionController(); 1099 int minOffset = selectionController.getMinTouchOffset(); 1100 int maxOffset = selectionController.getMaxTouchOffset(); 1101 1102 return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); 1103 } 1104 1105 private PositionListener getPositionListener() { 1106 if (mPositionListener == null) { 1107 mPositionListener = new PositionListener(); 1108 } 1109 return mPositionListener; 1110 } 1111 1112 private interface TextViewPositionListener { 1113 public void updatePosition(int parentPositionX, int parentPositionY, 1114 boolean parentPositionChanged, boolean parentScrolled); 1115 } 1116 1117 private boolean isOffsetVisible(int offset) { 1118 Layout layout = mTextView.getLayout(); 1119 if (layout == null) return false; 1120 1121 final int line = layout.getLineForOffset(offset); 1122 final int lineBottom = layout.getLineBottom(line); 1123 final int primaryHorizontal = (int) layout.getPrimaryHorizontal(offset); 1124 return mTextView.isPositionVisible( 1125 primaryHorizontal + mTextView.viewportToContentHorizontalOffset(), 1126 lineBottom + mTextView.viewportToContentVerticalOffset()); 1127 } 1128 1129 /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed 1130 * in the view. Returns false when the position is in the empty space of left/right of text. 1131 */ 1132 private boolean isPositionOnText(float x, float y) { 1133 Layout layout = mTextView.getLayout(); 1134 if (layout == null) return false; 1135 1136 final int line = mTextView.getLineAtCoordinate(y); 1137 x = mTextView.convertToLocalHorizontalCoordinate(x); 1138 1139 if (x < layout.getLineLeft(line)) return false; 1140 if (x > layout.getLineRight(line)) return false; 1141 return true; 1142 } 1143 1144 private void startDragAndDrop() { 1145 getSelectionActionModeHelper().onSelectionDrag(); 1146 1147 // TODO: Fix drag and drop in full screen extracted mode. 1148 if (mTextView.isInExtractedMode()) { 1149 return; 1150 } 1151 final int start = mTextView.getSelectionStart(); 1152 final int end = mTextView.getSelectionEnd(); 1153 CharSequence selectedText = mTextView.getTransformedText(start, end); 1154 ClipData data = ClipData.newPlainText(null, selectedText); 1155 DragLocalState localState = new DragLocalState(mTextView, start, end); 1156 mTextView.startDragAndDrop(data, getTextThumbnailBuilder(start, end), localState, 1157 View.DRAG_FLAG_GLOBAL); 1158 stopTextActionMode(); 1159 if (hasSelectionController()) { 1160 getSelectionController().resetTouchOffsets(); 1161 } 1162 } 1163 1164 public boolean performLongClick(boolean handled) { 1165 // Long press in empty space moves cursor and starts the insertion action mode. 1166 if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) 1167 && mInsertionControllerEnabled) { 1168 final int offset = mTextView.getOffsetForPosition(mLastDownPositionX, 1169 mLastDownPositionY); 1170 Selection.setSelection((Spannable) mTextView.getText(), offset); 1171 getInsertionController().show(); 1172 mIsInsertionActionModeStartPending = true; 1173 handled = true; 1174 MetricsLogger.action( 1175 mTextView.getContext(), 1176 MetricsEvent.TEXT_LONGPRESS, 1177 TextViewMetrics.SUBTYPE_LONG_PRESS_OTHER); 1178 } 1179 1180 if (!handled && mTextActionMode != null) { 1181 if (touchPositionIsInSelection()) { 1182 startDragAndDrop(); 1183 MetricsLogger.action( 1184 mTextView.getContext(), 1185 MetricsEvent.TEXT_LONGPRESS, 1186 TextViewMetrics.SUBTYPE_LONG_PRESS_DRAG_AND_DROP); 1187 } else { 1188 stopTextActionMode(); 1189 selectCurrentWordAndStartDrag(); 1190 MetricsLogger.action( 1191 mTextView.getContext(), 1192 MetricsEvent.TEXT_LONGPRESS, 1193 TextViewMetrics.SUBTYPE_LONG_PRESS_SELECTION); 1194 } 1195 handled = true; 1196 } 1197 1198 // Start a new selection 1199 if (!handled) { 1200 handled = selectCurrentWordAndStartDrag(); 1201 if (handled) { 1202 MetricsLogger.action( 1203 mTextView.getContext(), 1204 MetricsEvent.TEXT_LONGPRESS, 1205 TextViewMetrics.SUBTYPE_LONG_PRESS_SELECTION); 1206 } 1207 } 1208 1209 return handled; 1210 } 1211 1212 float getLastUpPositionX() { 1213 return mLastUpPositionX; 1214 } 1215 1216 float getLastUpPositionY() { 1217 return mLastUpPositionY; 1218 } 1219 1220 private long getLastTouchOffsets() { 1221 SelectionModifierCursorController selectionController = getSelectionController(); 1222 final int minOffset = selectionController.getMinTouchOffset(); 1223 final int maxOffset = selectionController.getMaxTouchOffset(); 1224 return TextUtils.packRangeInLong(minOffset, maxOffset); 1225 } 1226 1227 void onFocusChanged(boolean focused, int direction) { 1228 mShowCursor = SystemClock.uptimeMillis(); 1229 ensureEndedBatchEdit(); 1230 1231 if (focused) { 1232 int selStart = mTextView.getSelectionStart(); 1233 int selEnd = mTextView.getSelectionEnd(); 1234 1235 // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection 1236 // mode for these, unless there was a specific selection already started. 1237 final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 1238 && selEnd == mTextView.getText().length(); 1239 1240 mCreatedWithASelection = mFrozenWithFocus && mTextView.hasSelection() 1241 && !isFocusHighlighted; 1242 1243 if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { 1244 // If a tap was used to give focus to that view, move cursor at tap position. 1245 // Has to be done before onTakeFocus, which can be overloaded. 1246 final int lastTapPosition = getLastTapPosition(); 1247 if (lastTapPosition >= 0) { 1248 Selection.setSelection((Spannable) mTextView.getText(), lastTapPosition); 1249 } 1250 1251 // Note this may have to be moved out of the Editor class 1252 MovementMethod mMovement = mTextView.getMovementMethod(); 1253 if (mMovement != null) { 1254 mMovement.onTakeFocus(mTextView, (Spannable) mTextView.getText(), direction); 1255 } 1256 1257 // The DecorView does not have focus when the 'Done' ExtractEditText button is 1258 // pressed. Since it is the ViewAncestor's mView, it requests focus before 1259 // ExtractEditText clears focus, which gives focus to the ExtractEditText. 1260 // This special case ensure that we keep current selection in that case. 1261 // It would be better to know why the DecorView does not have focus at that time. 1262 if (((mTextView.isInExtractedMode()) || mSelectionMoved) 1263 && selStart >= 0 && selEnd >= 0) { 1264 /* 1265 * Someone intentionally set the selection, so let them 1266 * do whatever it is that they wanted to do instead of 1267 * the default on-focus behavior. We reset the selection 1268 * here instead of just skipping the onTakeFocus() call 1269 * because some movement methods do something other than 1270 * just setting the selection in theirs and we still 1271 * need to go through that path. 1272 */ 1273 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 1274 } 1275 1276 if (mSelectAllOnFocus) { 1277 mTextView.selectAllText(); 1278 } 1279 1280 mTouchFocusSelected = true; 1281 } 1282 1283 mFrozenWithFocus = false; 1284 mSelectionMoved = false; 1285 1286 if (mError != null) { 1287 showError(); 1288 } 1289 1290 makeBlink(); 1291 } else { 1292 if (mError != null) { 1293 hideError(); 1294 } 1295 // Don't leave us in the middle of a batch edit. 1296 mTextView.onEndBatchEdit(); 1297 1298 if (mTextView.isInExtractedMode()) { 1299 hideCursorAndSpanControllers(); 1300 stopTextActionModeWithPreservingSelection(); 1301 } else { 1302 hideCursorAndSpanControllers(); 1303 if (mTextView.isTemporarilyDetached()) { 1304 stopTextActionModeWithPreservingSelection(); 1305 } else { 1306 stopTextActionMode(); 1307 } 1308 downgradeEasyCorrectionSpans(); 1309 } 1310 // No need to create the controller 1311 if (mSelectionModifierCursorController != null) { 1312 mSelectionModifierCursorController.resetTouchOffsets(); 1313 } 1314 1315 ensureNoSelectionIfNonSelectable(); 1316 } 1317 } 1318 1319 private void ensureNoSelectionIfNonSelectable() { 1320 // This could be the case if a TextLink has been tapped. 1321 if (!mTextView.textCanBeSelected() && mTextView.hasSelection()) { 1322 Selection.setSelection((Spannable) mTextView.getText(), 1323 mTextView.length(), mTextView.length()); 1324 } 1325 } 1326 1327 /** 1328 * Downgrades to simple suggestions all the easy correction spans that are not a spell check 1329 * span. 1330 */ 1331 private void downgradeEasyCorrectionSpans() { 1332 CharSequence text = mTextView.getText(); 1333 if (text instanceof Spannable) { 1334 Spannable spannable = (Spannable) text; 1335 SuggestionSpan[] suggestionSpans = spannable.getSpans(0, 1336 spannable.length(), SuggestionSpan.class); 1337 for (int i = 0; i < suggestionSpans.length; i++) { 1338 int flags = suggestionSpans[i].getFlags(); 1339 if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0 1340 && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) { 1341 flags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 1342 suggestionSpans[i].setFlags(flags); 1343 } 1344 } 1345 } 1346 } 1347 1348 void sendOnTextChanged(int start, int before, int after) { 1349 getSelectionActionModeHelper().onTextChanged(start, start + before); 1350 updateSpellCheckSpans(start, start + after, false); 1351 1352 // Flip flag to indicate the word iterator needs to have the text reset. 1353 mUpdateWordIteratorText = true; 1354 1355 // Hide the controllers as soon as text is modified (typing, procedural...) 1356 // We do not hide the span controllers, since they can be added when a new text is 1357 // inserted into the text view (voice IME). 1358 hideCursorControllers(); 1359 // Reset drag accelerator. 1360 if (mSelectionModifierCursorController != null) { 1361 mSelectionModifierCursorController.resetTouchOffsets(); 1362 } 1363 stopTextActionMode(); 1364 } 1365 1366 private int getLastTapPosition() { 1367 // No need to create the controller at that point, no last tap position saved 1368 if (mSelectionModifierCursorController != null) { 1369 int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); 1370 if (lastTapPosition >= 0) { 1371 // Safety check, should not be possible. 1372 if (lastTapPosition > mTextView.getText().length()) { 1373 lastTapPosition = mTextView.getText().length(); 1374 } 1375 return lastTapPosition; 1376 } 1377 } 1378 1379 return -1; 1380 } 1381 1382 void onWindowFocusChanged(boolean hasWindowFocus) { 1383 if (hasWindowFocus) { 1384 if (mBlink != null) { 1385 mBlink.uncancel(); 1386 makeBlink(); 1387 } 1388 if (mTextView.hasSelection() && !extractedTextModeWillBeStarted()) { 1389 refreshTextActionMode(); 1390 } 1391 } else { 1392 if (mBlink != null) { 1393 mBlink.cancel(); 1394 } 1395 if (mInputContentType != null) { 1396 mInputContentType.enterDown = false; 1397 } 1398 // Order matters! Must be done before onParentLostFocus to rely on isShowingUp 1399 hideCursorAndSpanControllers(); 1400 stopTextActionModeWithPreservingSelection(); 1401 if (mSuggestionsPopupWindow != null) { 1402 mSuggestionsPopupWindow.onParentLostFocus(); 1403 } 1404 1405 // Don't leave us in the middle of a batch edit. Same as in onFocusChanged 1406 ensureEndedBatchEdit(); 1407 1408 ensureNoSelectionIfNonSelectable(); 1409 } 1410 } 1411 1412 private void updateTapState(MotionEvent event) { 1413 final int action = event.getActionMasked(); 1414 if (action == MotionEvent.ACTION_DOWN) { 1415 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 1416 // Detect double tap and triple click. 1417 if (((mTapState == TAP_STATE_FIRST_TAP) 1418 || ((mTapState == TAP_STATE_DOUBLE_TAP) && isMouse)) 1419 && (SystemClock.uptimeMillis() - mLastTouchUpTime) 1420 <= ViewConfiguration.getDoubleTapTimeout()) { 1421 if (mTapState == TAP_STATE_FIRST_TAP) { 1422 mTapState = TAP_STATE_DOUBLE_TAP; 1423 } else { 1424 mTapState = TAP_STATE_TRIPLE_CLICK; 1425 } 1426 } else { 1427 mTapState = TAP_STATE_FIRST_TAP; 1428 } 1429 } 1430 if (action == MotionEvent.ACTION_UP) { 1431 mLastTouchUpTime = SystemClock.uptimeMillis(); 1432 } 1433 } 1434 1435 private boolean shouldFilterOutTouchEvent(MotionEvent event) { 1436 if (!event.isFromSource(InputDevice.SOURCE_MOUSE)) { 1437 return false; 1438 } 1439 final boolean primaryButtonStateChanged = 1440 ((mLastButtonState ^ event.getButtonState()) & MotionEvent.BUTTON_PRIMARY) != 0; 1441 final int action = event.getActionMasked(); 1442 if ((action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_UP) 1443 && !primaryButtonStateChanged) { 1444 return true; 1445 } 1446 if (action == MotionEvent.ACTION_MOVE 1447 && !event.isButtonPressed(MotionEvent.BUTTON_PRIMARY)) { 1448 return true; 1449 } 1450 return false; 1451 } 1452 1453 void onTouchEvent(MotionEvent event) { 1454 final boolean filterOutEvent = shouldFilterOutTouchEvent(event); 1455 mLastButtonState = event.getButtonState(); 1456 if (filterOutEvent) { 1457 if (event.getActionMasked() == MotionEvent.ACTION_UP) { 1458 mDiscardNextActionUp = true; 1459 } 1460 return; 1461 } 1462 updateTapState(event); 1463 updateFloatingToolbarVisibility(event); 1464 1465 if (hasSelectionController()) { 1466 getSelectionController().onTouchEvent(event); 1467 } 1468 1469 if (mShowSuggestionRunnable != null) { 1470 mTextView.removeCallbacks(mShowSuggestionRunnable); 1471 mShowSuggestionRunnable = null; 1472 } 1473 1474 if (event.getActionMasked() == MotionEvent.ACTION_UP) { 1475 mLastUpPositionX = event.getX(); 1476 mLastUpPositionY = event.getY(); 1477 } 1478 1479 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 1480 mLastDownPositionX = event.getX(); 1481 mLastDownPositionY = event.getY(); 1482 1483 // Reset this state; it will be re-set if super.onTouchEvent 1484 // causes focus to move to the view. 1485 mTouchFocusSelected = false; 1486 mIgnoreActionUpEvent = false; 1487 } 1488 } 1489 1490 private void updateFloatingToolbarVisibility(MotionEvent event) { 1491 if (mTextActionMode != null) { 1492 switch (event.getActionMasked()) { 1493 case MotionEvent.ACTION_MOVE: 1494 hideFloatingToolbar(ActionMode.DEFAULT_HIDE_DURATION); 1495 break; 1496 case MotionEvent.ACTION_UP: // fall through 1497 case MotionEvent.ACTION_CANCEL: 1498 showFloatingToolbar(); 1499 } 1500 } 1501 } 1502 1503 void hideFloatingToolbar(int duration) { 1504 if (mTextActionMode != null) { 1505 mTextView.removeCallbacks(mShowFloatingToolbar); 1506 mTextActionMode.hide(duration); 1507 } 1508 } 1509 1510 private void showFloatingToolbar() { 1511 if (mTextActionMode != null) { 1512 // Delay "show" so it doesn't interfere with click confirmations 1513 // or double-clicks that could "dismiss" the floating toolbar. 1514 int delay = ViewConfiguration.getDoubleTapTimeout(); 1515 mTextView.postDelayed(mShowFloatingToolbar, delay); 1516 1517 // This classifies the text and most likely returns before the toolbar is actually 1518 // shown. If not, it will update the toolbar with the result when classification 1519 // returns. We would rather not wait for a long running classification process. 1520 invalidateActionModeAsync(); 1521 } 1522 } 1523 1524 public void beginBatchEdit() { 1525 mInBatchEditControllers = true; 1526 final InputMethodState ims = mInputMethodState; 1527 if (ims != null) { 1528 int nesting = ++ims.mBatchEditNesting; 1529 if (nesting == 1) { 1530 ims.mCursorChanged = false; 1531 ims.mChangedDelta = 0; 1532 if (ims.mContentChanged) { 1533 // We already have a pending change from somewhere else, 1534 // so turn this into a full update. 1535 ims.mChangedStart = 0; 1536 ims.mChangedEnd = mTextView.getText().length(); 1537 } else { 1538 ims.mChangedStart = EXTRACT_UNKNOWN; 1539 ims.mChangedEnd = EXTRACT_UNKNOWN; 1540 ims.mContentChanged = false; 1541 } 1542 mUndoInputFilter.beginBatchEdit(); 1543 mTextView.onBeginBatchEdit(); 1544 } 1545 } 1546 } 1547 1548 public void endBatchEdit() { 1549 mInBatchEditControllers = false; 1550 final InputMethodState ims = mInputMethodState; 1551 if (ims != null) { 1552 int nesting = --ims.mBatchEditNesting; 1553 if (nesting == 0) { 1554 finishBatchEdit(ims); 1555 } 1556 } 1557 } 1558 1559 void ensureEndedBatchEdit() { 1560 final InputMethodState ims = mInputMethodState; 1561 if (ims != null && ims.mBatchEditNesting != 0) { 1562 ims.mBatchEditNesting = 0; 1563 finishBatchEdit(ims); 1564 } 1565 } 1566 1567 void finishBatchEdit(final InputMethodState ims) { 1568 mTextView.onEndBatchEdit(); 1569 mUndoInputFilter.endBatchEdit(); 1570 1571 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1572 mTextView.updateAfterEdit(); 1573 reportExtractedText(); 1574 } else if (ims.mCursorChanged) { 1575 // Cheesy way to get us to report the current cursor location. 1576 mTextView.invalidateCursor(); 1577 } 1578 // sendUpdateSelection knows to avoid sending if the selection did 1579 // not actually change. 1580 sendUpdateSelection(); 1581 1582 // Show drag handles if they were blocked by batch edit mode. 1583 if (mTextActionMode != null) { 1584 final CursorController cursorController = mTextView.hasSelection() 1585 ? getSelectionController() : getInsertionController(); 1586 if (cursorController != null && !cursorController.isActive() 1587 && !cursorController.isCursorBeingModified()) { 1588 cursorController.show(); 1589 } 1590 } 1591 } 1592 1593 static final int EXTRACT_NOTHING = -2; 1594 static final int EXTRACT_UNKNOWN = -1; 1595 1596 boolean extractText(ExtractedTextRequest request, ExtractedText outText) { 1597 return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, 1598 EXTRACT_UNKNOWN, outText); 1599 } 1600 1601 private boolean extractTextInternal(@Nullable ExtractedTextRequest request, 1602 int partialStartOffset, int partialEndOffset, int delta, 1603 @Nullable ExtractedText outText) { 1604 if (request == null || outText == null) { 1605 return false; 1606 } 1607 1608 final CharSequence content = mTextView.getText(); 1609 if (content == null) { 1610 return false; 1611 } 1612 1613 if (partialStartOffset != EXTRACT_NOTHING) { 1614 final int N = content.length(); 1615 if (partialStartOffset < 0) { 1616 outText.partialStartOffset = outText.partialEndOffset = -1; 1617 partialStartOffset = 0; 1618 partialEndOffset = N; 1619 } else { 1620 // Now use the delta to determine the actual amount of text 1621 // we need. 1622 partialEndOffset += delta; 1623 // Adjust offsets to ensure we contain full spans. 1624 if (content instanceof Spanned) { 1625 Spanned spanned = (Spanned) content; 1626 Object[] spans = spanned.getSpans(partialStartOffset, 1627 partialEndOffset, ParcelableSpan.class); 1628 int i = spans.length; 1629 while (i > 0) { 1630 i--; 1631 int j = spanned.getSpanStart(spans[i]); 1632 if (j < partialStartOffset) partialStartOffset = j; 1633 j = spanned.getSpanEnd(spans[i]); 1634 if (j > partialEndOffset) partialEndOffset = j; 1635 } 1636 } 1637 outText.partialStartOffset = partialStartOffset; 1638 outText.partialEndOffset = partialEndOffset - delta; 1639 1640 if (partialStartOffset > N) { 1641 partialStartOffset = N; 1642 } else if (partialStartOffset < 0) { 1643 partialStartOffset = 0; 1644 } 1645 if (partialEndOffset > N) { 1646 partialEndOffset = N; 1647 } else if (partialEndOffset < 0) { 1648 partialEndOffset = 0; 1649 } 1650 } 1651 if ((request.flags & InputConnection.GET_TEXT_WITH_STYLES) != 0) { 1652 outText.text = content.subSequence(partialStartOffset, 1653 partialEndOffset); 1654 } else { 1655 outText.text = TextUtils.substring(content, partialStartOffset, 1656 partialEndOffset); 1657 } 1658 } else { 1659 outText.partialStartOffset = 0; 1660 outText.partialEndOffset = 0; 1661 outText.text = ""; 1662 } 1663 outText.flags = 0; 1664 if (MetaKeyKeyListener.getMetaState(content, MetaKeyKeyListener.META_SELECTING) != 0) { 1665 outText.flags |= ExtractedText.FLAG_SELECTING; 1666 } 1667 if (mTextView.isSingleLine()) { 1668 outText.flags |= ExtractedText.FLAG_SINGLE_LINE; 1669 } 1670 outText.startOffset = 0; 1671 outText.selectionStart = mTextView.getSelectionStart(); 1672 outText.selectionEnd = mTextView.getSelectionEnd(); 1673 outText.hint = mTextView.getHint(); 1674 return true; 1675 } 1676 1677 boolean reportExtractedText() { 1678 final Editor.InputMethodState ims = mInputMethodState; 1679 if (ims == null) { 1680 return false; 1681 } 1682 ims.mSelectionModeChanged = false; 1683 final ExtractedTextRequest req = ims.mExtractedTextRequest; 1684 if (req == null) { 1685 return false; 1686 } 1687 final InputMethodManager imm = InputMethodManager.peekInstance(); 1688 if (imm == null) { 1689 return false; 1690 } 1691 if (TextView.DEBUG_EXTRACT) { 1692 Log.v(TextView.LOG_TAG, "Retrieving extracted start=" 1693 + ims.mChangedStart 1694 + " end=" + ims.mChangedEnd 1695 + " delta=" + ims.mChangedDelta); 1696 } 1697 if (ims.mChangedStart < 0 && !ims.mContentChanged) { 1698 ims.mChangedStart = EXTRACT_NOTHING; 1699 } 1700 if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, 1701 ims.mChangedDelta, ims.mExtractedText)) { 1702 if (TextView.DEBUG_EXTRACT) { 1703 Log.v(TextView.LOG_TAG, 1704 "Reporting extracted start=" 1705 + ims.mExtractedText.partialStartOffset 1706 + " end=" + ims.mExtractedText.partialEndOffset 1707 + ": " + ims.mExtractedText.text); 1708 } 1709 1710 imm.updateExtractedText(mTextView, req.token, ims.mExtractedText); 1711 ims.mChangedStart = EXTRACT_UNKNOWN; 1712 ims.mChangedEnd = EXTRACT_UNKNOWN; 1713 ims.mChangedDelta = 0; 1714 ims.mContentChanged = false; 1715 return true; 1716 } 1717 return false; 1718 } 1719 1720 private void sendUpdateSelection() { 1721 if (null != mInputMethodState && mInputMethodState.mBatchEditNesting <= 0) { 1722 final InputMethodManager imm = InputMethodManager.peekInstance(); 1723 if (null != imm) { 1724 final int selectionStart = mTextView.getSelectionStart(); 1725 final int selectionEnd = mTextView.getSelectionEnd(); 1726 int candStart = -1; 1727 int candEnd = -1; 1728 if (mTextView.getText() instanceof Spannable) { 1729 final Spannable sp = (Spannable) mTextView.getText(); 1730 candStart = EditableInputConnection.getComposingSpanStart(sp); 1731 candEnd = EditableInputConnection.getComposingSpanEnd(sp); 1732 } 1733 // InputMethodManager#updateSelection skips sending the message if 1734 // none of the parameters have changed since the last time we called it. 1735 imm.updateSelection(mTextView, 1736 selectionStart, selectionEnd, candStart, candEnd); 1737 } 1738 } 1739 } 1740 1741 void onDraw(Canvas canvas, Layout layout, Path highlight, Paint highlightPaint, 1742 int cursorOffsetVertical) { 1743 final int selectionStart = mTextView.getSelectionStart(); 1744 final int selectionEnd = mTextView.getSelectionEnd(); 1745 1746 final InputMethodState ims = mInputMethodState; 1747 if (ims != null && ims.mBatchEditNesting == 0) { 1748 InputMethodManager imm = InputMethodManager.peekInstance(); 1749 if (imm != null) { 1750 if (imm.isActive(mTextView)) { 1751 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1752 // We are in extract mode and the content has changed 1753 // in some way... just report complete new text to the 1754 // input method. 1755 reportExtractedText(); 1756 } 1757 } 1758 } 1759 } 1760 1761 if (mCorrectionHighlighter != null) { 1762 mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); 1763 } 1764 1765 if (highlight != null && selectionStart == selectionEnd && mDrawableForCursor != null) { 1766 drawCursor(canvas, cursorOffsetVertical); 1767 // Rely on the drawable entirely, do not draw the cursor line. 1768 // Has to be done after the IMM related code above which relies on the highlight. 1769 highlight = null; 1770 } 1771 1772 if (mSelectionActionModeHelper != null) { 1773 mSelectionActionModeHelper.onDraw(canvas); 1774 if (mSelectionActionModeHelper.isDrawingHighlight()) { 1775 highlight = null; 1776 } 1777 } 1778 1779 if (mTextView.canHaveDisplayList() && canvas.isHardwareAccelerated()) { 1780 drawHardwareAccelerated(canvas, layout, highlight, highlightPaint, 1781 cursorOffsetVertical); 1782 } else { 1783 layout.draw(canvas, highlight, highlightPaint, cursorOffsetVertical); 1784 } 1785 } 1786 1787 private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight, 1788 Paint highlightPaint, int cursorOffsetVertical) { 1789 final long lineRange = layout.getLineRangeForDraw(canvas); 1790 int firstLine = TextUtils.unpackRangeStartFromLong(lineRange); 1791 int lastLine = TextUtils.unpackRangeEndFromLong(lineRange); 1792 if (lastLine < 0) return; 1793 1794 layout.drawBackground(canvas, highlight, highlightPaint, cursorOffsetVertical, 1795 firstLine, lastLine); 1796 1797 if (layout instanceof DynamicLayout) { 1798 if (mTextRenderNodes == null) { 1799 mTextRenderNodes = ArrayUtils.emptyArray(TextRenderNode.class); 1800 } 1801 1802 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1803 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1804 int[] blockIndices = dynamicLayout.getBlockIndices(); 1805 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1806 final int indexFirstChangedBlock = dynamicLayout.getIndexFirstChangedBlock(); 1807 1808 final ArraySet<Integer> blockSet = dynamicLayout.getBlocksAlwaysNeedToBeRedrawn(); 1809 if (blockSet != null) { 1810 for (int i = 0; i < blockSet.size(); i++) { 1811 final int blockIndex = dynamicLayout.getBlockIndex(blockSet.valueAt(i)); 1812 if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX 1813 && mTextRenderNodes[blockIndex] != null) { 1814 mTextRenderNodes[blockIndex].needsToBeShifted = true; 1815 } 1816 } 1817 } 1818 1819 int startBlock = Arrays.binarySearch(blockEndLines, 0, numberOfBlocks, firstLine); 1820 if (startBlock < 0) { 1821 startBlock = -(startBlock + 1); 1822 } 1823 startBlock = Math.min(indexFirstChangedBlock, startBlock); 1824 1825 int startIndexToFindAvailableRenderNode = 0; 1826 int lastIndex = numberOfBlocks; 1827 1828 for (int i = startBlock; i < numberOfBlocks; i++) { 1829 final int blockIndex = blockIndices[i]; 1830 if (i >= indexFirstChangedBlock 1831 && blockIndex != DynamicLayout.INVALID_BLOCK_INDEX 1832 && mTextRenderNodes[blockIndex] != null) { 1833 mTextRenderNodes[blockIndex].needsToBeShifted = true; 1834 } 1835 if (blockEndLines[i] < firstLine) { 1836 // Blocks in [indexFirstChangedBlock, firstLine) are not redrawn here. They will 1837 // be redrawn after they get scrolled into drawing range. 1838 continue; 1839 } 1840 startIndexToFindAvailableRenderNode = drawHardwareAcceleratedInner(canvas, layout, 1841 highlight, highlightPaint, cursorOffsetVertical, blockEndLines, 1842 blockIndices, i, numberOfBlocks, startIndexToFindAvailableRenderNode); 1843 if (blockEndLines[i] >= lastLine) { 1844 lastIndex = Math.max(indexFirstChangedBlock, i + 1); 1845 break; 1846 } 1847 } 1848 if (blockSet != null) { 1849 for (int i = 0; i < blockSet.size(); i++) { 1850 final int block = blockSet.valueAt(i); 1851 final int blockIndex = dynamicLayout.getBlockIndex(block); 1852 if (blockIndex == DynamicLayout.INVALID_BLOCK_INDEX 1853 || mTextRenderNodes[blockIndex] == null 1854 || mTextRenderNodes[blockIndex].needsToBeShifted) { 1855 startIndexToFindAvailableRenderNode = drawHardwareAcceleratedInner(canvas, 1856 layout, highlight, highlightPaint, cursorOffsetVertical, 1857 blockEndLines, blockIndices, block, numberOfBlocks, 1858 startIndexToFindAvailableRenderNode); 1859 } 1860 } 1861 } 1862 1863 dynamicLayout.setIndexFirstChangedBlock(lastIndex); 1864 } else { 1865 // Boring layout is used for empty and hint text 1866 layout.drawText(canvas, firstLine, lastLine); 1867 } 1868 } 1869 1870 private int drawHardwareAcceleratedInner(Canvas canvas, Layout layout, Path highlight, 1871 Paint highlightPaint, int cursorOffsetVertical, int[] blockEndLines, 1872 int[] blockIndices, int blockInfoIndex, int numberOfBlocks, 1873 int startIndexToFindAvailableRenderNode) { 1874 final int blockEndLine = blockEndLines[blockInfoIndex]; 1875 int blockIndex = blockIndices[blockInfoIndex]; 1876 1877 final boolean blockIsInvalid = blockIndex == DynamicLayout.INVALID_BLOCK_INDEX; 1878 if (blockIsInvalid) { 1879 blockIndex = getAvailableDisplayListIndex(blockIndices, numberOfBlocks, 1880 startIndexToFindAvailableRenderNode); 1881 // Note how dynamic layout's internal block indices get updated from Editor 1882 blockIndices[blockInfoIndex] = blockIndex; 1883 if (mTextRenderNodes[blockIndex] != null) { 1884 mTextRenderNodes[blockIndex].isDirty = true; 1885 } 1886 startIndexToFindAvailableRenderNode = blockIndex + 1; 1887 } 1888 1889 if (mTextRenderNodes[blockIndex] == null) { 1890 mTextRenderNodes[blockIndex] = new TextRenderNode("Text " + blockIndex); 1891 } 1892 1893 final boolean blockDisplayListIsInvalid = mTextRenderNodes[blockIndex].needsRecord(); 1894 RenderNode blockDisplayList = mTextRenderNodes[blockIndex].renderNode; 1895 if (mTextRenderNodes[blockIndex].needsToBeShifted || blockDisplayListIsInvalid) { 1896 final int blockBeginLine = blockInfoIndex == 0 ? 1897 0 : blockEndLines[blockInfoIndex - 1] + 1; 1898 final int top = layout.getLineTop(blockBeginLine); 1899 final int bottom = layout.getLineBottom(blockEndLine); 1900 int left = 0; 1901 int right = mTextView.getWidth(); 1902 if (mTextView.getHorizontallyScrolling()) { 1903 float min = Float.MAX_VALUE; 1904 float max = Float.MIN_VALUE; 1905 for (int line = blockBeginLine; line <= blockEndLine; line++) { 1906 min = Math.min(min, layout.getLineLeft(line)); 1907 max = Math.max(max, layout.getLineRight(line)); 1908 } 1909 left = (int) min; 1910 right = (int) (max + 0.5f); 1911 } 1912 1913 // Rebuild display list if it is invalid 1914 if (blockDisplayListIsInvalid) { 1915 final DisplayListCanvas displayListCanvas = blockDisplayList.start( 1916 right - left, bottom - top); 1917 try { 1918 // drawText is always relative to TextView's origin, this translation 1919 // brings this range of text back to the top left corner of the viewport 1920 displayListCanvas.translate(-left, -top); 1921 layout.drawText(displayListCanvas, blockBeginLine, blockEndLine); 1922 mTextRenderNodes[blockIndex].isDirty = false; 1923 // No need to untranslate, previous context is popped after 1924 // drawDisplayList 1925 } finally { 1926 blockDisplayList.end(displayListCanvas); 1927 // Same as drawDisplayList below, handled by our TextView's parent 1928 blockDisplayList.setClipToBounds(false); 1929 } 1930 } 1931 1932 // Valid display list only needs to update its drawing location. 1933 blockDisplayList.setLeftTopRightBottom(left, top, right, bottom); 1934 mTextRenderNodes[blockIndex].needsToBeShifted = false; 1935 } 1936 ((DisplayListCanvas) canvas).drawRenderNode(blockDisplayList); 1937 return startIndexToFindAvailableRenderNode; 1938 } 1939 1940 private int getAvailableDisplayListIndex(int[] blockIndices, int numberOfBlocks, 1941 int searchStartIndex) { 1942 int length = mTextRenderNodes.length; 1943 for (int i = searchStartIndex; i < length; i++) { 1944 boolean blockIndexFound = false; 1945 for (int j = 0; j < numberOfBlocks; j++) { 1946 if (blockIndices[j] == i) { 1947 blockIndexFound = true; 1948 break; 1949 } 1950 } 1951 if (blockIndexFound) continue; 1952 return i; 1953 } 1954 1955 // No available index found, the pool has to grow 1956 mTextRenderNodes = GrowingArrayUtils.append(mTextRenderNodes, length, null); 1957 return length; 1958 } 1959 1960 private void drawCursor(Canvas canvas, int cursorOffsetVertical) { 1961 final boolean translate = cursorOffsetVertical != 0; 1962 if (translate) canvas.translate(0, cursorOffsetVertical); 1963 if (mDrawableForCursor != null) { 1964 mDrawableForCursor.draw(canvas); 1965 } 1966 if (translate) canvas.translate(0, -cursorOffsetVertical); 1967 } 1968 1969 void invalidateHandlesAndActionMode() { 1970 if (mSelectionModifierCursorController != null) { 1971 mSelectionModifierCursorController.invalidateHandles(); 1972 } 1973 if (mInsertionPointCursorController != null) { 1974 mInsertionPointCursorController.invalidateHandle(); 1975 } 1976 if (mTextActionMode != null) { 1977 invalidateActionMode(); 1978 } 1979 } 1980 1981 /** 1982 * Invalidates all the sub-display lists that overlap the specified character range 1983 */ 1984 void invalidateTextDisplayList(Layout layout, int start, int end) { 1985 if (mTextRenderNodes != null && layout instanceof DynamicLayout) { 1986 final int firstLine = layout.getLineForOffset(start); 1987 final int lastLine = layout.getLineForOffset(end); 1988 1989 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1990 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1991 int[] blockIndices = dynamicLayout.getBlockIndices(); 1992 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1993 1994 int i = 0; 1995 // Skip the blocks before firstLine 1996 while (i < numberOfBlocks) { 1997 if (blockEndLines[i] >= firstLine) break; 1998 i++; 1999 } 2000 2001 // Invalidate all subsequent blocks until lastLine is passed 2002 while (i < numberOfBlocks) { 2003 final int blockIndex = blockIndices[i]; 2004 if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX) { 2005 mTextRenderNodes[blockIndex].isDirty = true; 2006 } 2007 if (blockEndLines[i] >= lastLine) break; 2008 i++; 2009 } 2010 } 2011 } 2012 2013 void invalidateTextDisplayList() { 2014 if (mTextRenderNodes != null) { 2015 for (int i = 0; i < mTextRenderNodes.length; i++) { 2016 if (mTextRenderNodes[i] != null) mTextRenderNodes[i].isDirty = true; 2017 } 2018 } 2019 } 2020 2021 void updateCursorPosition() { 2022 if (mTextView.mCursorDrawableRes == 0) { 2023 mDrawableForCursor = null; 2024 return; 2025 } 2026 2027 final Layout layout = mTextView.getLayout(); 2028 final int offset = mTextView.getSelectionStart(); 2029 final int line = layout.getLineForOffset(offset); 2030 final int top = layout.getLineTop(line); 2031 final int bottom = layout.getLineBottomWithoutSpacing(line); 2032 2033 final boolean clamped = layout.shouldClampCursor(line); 2034 updateCursorPosition(top, bottom, layout.getPrimaryHorizontal(offset, clamped)); 2035 } 2036 2037 void refreshTextActionMode() { 2038 if (extractedTextModeWillBeStarted()) { 2039 mRestartActionModeOnNextRefresh = false; 2040 return; 2041 } 2042 final boolean hasSelection = mTextView.hasSelection(); 2043 final SelectionModifierCursorController selectionController = getSelectionController(); 2044 final InsertionPointCursorController insertionController = getInsertionController(); 2045 if ((selectionController != null && selectionController.isCursorBeingModified()) 2046 || (insertionController != null && insertionController.isCursorBeingModified())) { 2047 // ActionMode should be managed by the currently active cursor controller. 2048 mRestartActionModeOnNextRefresh = false; 2049 return; 2050 } 2051 if (hasSelection) { 2052 hideInsertionPointCursorController(); 2053 if (mTextActionMode == null) { 2054 if (mRestartActionModeOnNextRefresh) { 2055 // To avoid distraction, newly start action mode only when selection action 2056 // mode is being restarted. 2057 startSelectionActionModeAsync(false); 2058 } 2059 } else if (selectionController == null || !selectionController.isActive()) { 2060 // Insertion action mode is active. Avoid dismissing the selection. 2061 stopTextActionModeWithPreservingSelection(); 2062 startSelectionActionModeAsync(false); 2063 } else { 2064 mTextActionMode.invalidateContentRect(); 2065 } 2066 } else { 2067 // Insertion action mode is started only when insertion controller is explicitly 2068 // activated. 2069 if (insertionController == null || !insertionController.isActive()) { 2070 stopTextActionMode(); 2071 } else if (mTextActionMode != null) { 2072 mTextActionMode.invalidateContentRect(); 2073 } 2074 } 2075 mRestartActionModeOnNextRefresh = false; 2076 } 2077 2078 /** 2079 * Start an Insertion action mode. 2080 */ 2081 void startInsertionActionMode() { 2082 if (mInsertionActionModeRunnable != null) { 2083 mTextView.removeCallbacks(mInsertionActionModeRunnable); 2084 } 2085 if (extractedTextModeWillBeStarted()) { 2086 return; 2087 } 2088 stopTextActionMode(); 2089 2090 ActionMode.Callback actionModeCallback = 2091 new TextActionModeCallback(TextActionMode.INSERTION); 2092 mTextActionMode = mTextView.startActionMode( 2093 actionModeCallback, ActionMode.TYPE_FLOATING); 2094 if (mTextActionMode != null && getInsertionController() != null) { 2095 getInsertionController().show(); 2096 } 2097 } 2098 2099 @NonNull 2100 TextView getTextView() { 2101 return mTextView; 2102 } 2103 2104 @Nullable 2105 ActionMode getTextActionMode() { 2106 return mTextActionMode; 2107 } 2108 2109 void setRestartActionModeOnNextRefresh(boolean value) { 2110 mRestartActionModeOnNextRefresh = value; 2111 } 2112 2113 /** 2114 * Asynchronously starts a selection action mode using the TextClassifier. 2115 */ 2116 void startSelectionActionModeAsync(boolean adjustSelection) { 2117 getSelectionActionModeHelper().startSelectionActionModeAsync(adjustSelection); 2118 } 2119 2120 void startLinkActionModeAsync(TextLinks.TextLink link) { 2121 Preconditions.checkNotNull(link); 2122 if (!(mTextView.getText() instanceof Spannable)) { 2123 return; 2124 } 2125 stopTextActionMode(); 2126 getSelectionActionModeHelper().startLinkActionModeAsync(link); 2127 } 2128 2129 /** 2130 * Asynchronously invalidates an action mode using the TextClassifier. 2131 */ 2132 void invalidateActionModeAsync() { 2133 getSelectionActionModeHelper().invalidateActionModeAsync(); 2134 } 2135 2136 /** 2137 * Synchronously invalidates an action mode without the TextClassifier. 2138 */ 2139 private void invalidateActionMode() { 2140 if (mTextActionMode != null) { 2141 mTextActionMode.invalidate(); 2142 } 2143 } 2144 2145 private SelectionActionModeHelper getSelectionActionModeHelper() { 2146 if (mSelectionActionModeHelper == null) { 2147 mSelectionActionModeHelper = new SelectionActionModeHelper(this); 2148 } 2149 return mSelectionActionModeHelper; 2150 } 2151 2152 /** 2153 * If the TextView allows text selection, selects the current word when no existing selection 2154 * was available and starts a drag. 2155 * 2156 * @return true if the drag was started. 2157 */ 2158 private boolean selectCurrentWordAndStartDrag() { 2159 if (mInsertionActionModeRunnable != null) { 2160 mTextView.removeCallbacks(mInsertionActionModeRunnable); 2161 } 2162 if (extractedTextModeWillBeStarted()) { 2163 return false; 2164 } 2165 if (!checkField()) { 2166 return false; 2167 } 2168 if (!mTextView.hasSelection() && !selectCurrentWord()) { 2169 // No selection and cannot select a word. 2170 return false; 2171 } 2172 stopTextActionModeWithPreservingSelection(); 2173 getSelectionController().enterDrag( 2174 SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_WORD); 2175 return true; 2176 } 2177 2178 /** 2179 * Checks whether a selection can be performed on the current TextView. 2180 * 2181 * @return true if a selection can be performed 2182 */ 2183 boolean checkField() { 2184 if (!mTextView.canSelectText() || !mTextView.requestFocus()) { 2185 Log.w(TextView.LOG_TAG, 2186 "TextView does not support text selection. Selection cancelled."); 2187 return false; 2188 } 2189 return true; 2190 } 2191 2192 boolean startActionModeInternal(@TextActionMode int actionMode) { 2193 if (extractedTextModeWillBeStarted()) { 2194 return false; 2195 } 2196 if (mTextActionMode != null) { 2197 // Text action mode is already started 2198 invalidateActionMode(); 2199 return false; 2200 } 2201 2202 if (actionMode != TextActionMode.TEXT_LINK 2203 && (!checkField() || !mTextView.hasSelection())) { 2204 return false; 2205 } 2206 2207 ActionMode.Callback actionModeCallback = new TextActionModeCallback(actionMode); 2208 mTextActionMode = mTextView.startActionMode(actionModeCallback, ActionMode.TYPE_FLOATING); 2209 2210 final boolean selectionStarted = mTextActionMode != null; 2211 if (selectionStarted && !mTextView.isTextSelectable() && mShowSoftInputOnFocus) { 2212 // Show the IME to be able to replace text, except when selecting non editable text. 2213 final InputMethodManager imm = InputMethodManager.peekInstance(); 2214 if (imm != null) { 2215 imm.showSoftInput(mTextView, 0, null); 2216 } 2217 } 2218 return selectionStarted; 2219 } 2220 2221 private boolean extractedTextModeWillBeStarted() { 2222 if (!(mTextView.isInExtractedMode())) { 2223 final InputMethodManager imm = InputMethodManager.peekInstance(); 2224 return imm != null && imm.isFullscreenMode(); 2225 } 2226 return false; 2227 } 2228 2229 /** 2230 * @return <code>true</code> if it's reasonable to offer to show suggestions depending on 2231 * the current cursor position or selection range. This method is consistent with the 2232 * method to show suggestions {@link SuggestionsPopupWindow#updateSuggestions}. 2233 */ 2234 private boolean shouldOfferToShowSuggestions() { 2235 CharSequence text = mTextView.getText(); 2236 if (!(text instanceof Spannable)) return false; 2237 2238 final Spannable spannable = (Spannable) text; 2239 final int selectionStart = mTextView.getSelectionStart(); 2240 final int selectionEnd = mTextView.getSelectionEnd(); 2241 final SuggestionSpan[] suggestionSpans = spannable.getSpans(selectionStart, selectionEnd, 2242 SuggestionSpan.class); 2243 if (suggestionSpans.length == 0) { 2244 return false; 2245 } 2246 if (selectionStart == selectionEnd) { 2247 // Spans overlap the cursor. 2248 for (int i = 0; i < suggestionSpans.length; i++) { 2249 if (suggestionSpans[i].getSuggestions().length > 0) { 2250 return true; 2251 } 2252 } 2253 return false; 2254 } 2255 int minSpanStart = mTextView.getText().length(); 2256 int maxSpanEnd = 0; 2257 int unionOfSpansCoveringSelectionStartStart = mTextView.getText().length(); 2258 int unionOfSpansCoveringSelectionStartEnd = 0; 2259 boolean hasValidSuggestions = false; 2260 for (int i = 0; i < suggestionSpans.length; i++) { 2261 final int spanStart = spannable.getSpanStart(suggestionSpans[i]); 2262 final int spanEnd = spannable.getSpanEnd(suggestionSpans[i]); 2263 minSpanStart = Math.min(minSpanStart, spanStart); 2264 maxSpanEnd = Math.max(maxSpanEnd, spanEnd); 2265 if (selectionStart < spanStart || selectionStart > spanEnd) { 2266 // The span doesn't cover the current selection start point. 2267 continue; 2268 } 2269 hasValidSuggestions = 2270 hasValidSuggestions || suggestionSpans[i].getSuggestions().length > 0; 2271 unionOfSpansCoveringSelectionStartStart = 2272 Math.min(unionOfSpansCoveringSelectionStartStart, spanStart); 2273 unionOfSpansCoveringSelectionStartEnd = 2274 Math.max(unionOfSpansCoveringSelectionStartEnd, spanEnd); 2275 } 2276 if (!hasValidSuggestions) { 2277 return false; 2278 } 2279 if (unionOfSpansCoveringSelectionStartStart >= unionOfSpansCoveringSelectionStartEnd) { 2280 // No spans cover the selection start point. 2281 return false; 2282 } 2283 if (minSpanStart < unionOfSpansCoveringSelectionStartStart 2284 || maxSpanEnd > unionOfSpansCoveringSelectionStartEnd) { 2285 // There is a span that is not covered by the union. In this case, we soouldn't offer 2286 // to show suggestions as it's confusing. 2287 return false; 2288 } 2289 return true; 2290 } 2291 2292 /** 2293 * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with 2294 * {@link SuggestionSpan#FLAG_EASY_CORRECT} set. 2295 */ 2296 private boolean isCursorInsideEasyCorrectionSpan() { 2297 Spannable spannable = (Spannable) mTextView.getText(); 2298 SuggestionSpan[] suggestionSpans = spannable.getSpans(mTextView.getSelectionStart(), 2299 mTextView.getSelectionEnd(), SuggestionSpan.class); 2300 for (int i = 0; i < suggestionSpans.length; i++) { 2301 if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) { 2302 return true; 2303 } 2304 } 2305 return false; 2306 } 2307 2308 void onTouchUpEvent(MotionEvent event) { 2309 if (getSelectionActionModeHelper().resetSelection( 2310 getTextView().getOffsetForPosition(event.getX(), event.getY()))) { 2311 return; 2312 } 2313 2314 boolean selectAllGotFocus = mSelectAllOnFocus && mTextView.didTouchFocusSelect(); 2315 hideCursorAndSpanControllers(); 2316 stopTextActionMode(); 2317 CharSequence text = mTextView.getText(); 2318 if (!selectAllGotFocus && text.length() > 0) { 2319 // Move cursor 2320 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 2321 Selection.setSelection((Spannable) text, offset); 2322 if (mSpellChecker != null) { 2323 // When the cursor moves, the word that was typed may need spell check 2324 mSpellChecker.onSelectionChanged(); 2325 } 2326 2327 if (!extractedTextModeWillBeStarted()) { 2328 if (isCursorInsideEasyCorrectionSpan()) { 2329 // Cancel the single tap delayed runnable. 2330 if (mInsertionActionModeRunnable != null) { 2331 mTextView.removeCallbacks(mInsertionActionModeRunnable); 2332 } 2333 2334 mShowSuggestionRunnable = new Runnable() { 2335 public void run() { 2336 replace(); 2337 } 2338 }; 2339 // removeCallbacks is performed on every touch 2340 mTextView.postDelayed(mShowSuggestionRunnable, 2341 ViewConfiguration.getDoubleTapTimeout()); 2342 } else if (hasInsertionController()) { 2343 getInsertionController().show(); 2344 } 2345 } 2346 } 2347 } 2348 2349 protected void stopTextActionMode() { 2350 if (mTextActionMode != null) { 2351 // This will hide the mSelectionModifierCursorController 2352 mTextActionMode.finish(); 2353 } 2354 } 2355 2356 private void stopTextActionModeWithPreservingSelection() { 2357 if (mTextActionMode != null) { 2358 mRestartActionModeOnNextRefresh = true; 2359 } 2360 mPreserveSelection = true; 2361 stopTextActionMode(); 2362 mPreserveSelection = false; 2363 } 2364 2365 /** 2366 * @return True if this view supports insertion handles. 2367 */ 2368 boolean hasInsertionController() { 2369 return mInsertionControllerEnabled; 2370 } 2371 2372 /** 2373 * @return True if this view supports selection handles. 2374 */ 2375 boolean hasSelectionController() { 2376 return mSelectionControllerEnabled; 2377 } 2378 2379 private InsertionPointCursorController getInsertionController() { 2380 if (!mInsertionControllerEnabled) { 2381 return null; 2382 } 2383 2384 if (mInsertionPointCursorController == null) { 2385 mInsertionPointCursorController = new InsertionPointCursorController(); 2386 2387 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 2388 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 2389 } 2390 2391 return mInsertionPointCursorController; 2392 } 2393 2394 @Nullable 2395 SelectionModifierCursorController getSelectionController() { 2396 if (!mSelectionControllerEnabled) { 2397 return null; 2398 } 2399 2400 if (mSelectionModifierCursorController == null) { 2401 mSelectionModifierCursorController = new SelectionModifierCursorController(); 2402 2403 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 2404 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 2405 } 2406 2407 return mSelectionModifierCursorController; 2408 } 2409 2410 @VisibleForTesting 2411 @Nullable 2412 public Drawable getCursorDrawable() { 2413 return mDrawableForCursor; 2414 } 2415 2416 private void updateCursorPosition(int top, int bottom, float horizontal) { 2417 if (mDrawableForCursor == null) { 2418 mDrawableForCursor = mTextView.getContext().getDrawable( 2419 mTextView.mCursorDrawableRes); 2420 } 2421 final int left = clampHorizontalPosition(mDrawableForCursor, horizontal); 2422 final int width = mDrawableForCursor.getIntrinsicWidth(); 2423 mDrawableForCursor.setBounds(left, top - mTempRect.top, left + width, 2424 bottom + mTempRect.bottom); 2425 } 2426 2427 /** 2428 * Return clamped position for the drawable. If the drawable is within the boundaries of the 2429 * view, then it is offset with the left padding of the cursor drawable. If the drawable is at 2430 * the beginning or the end of the text then its drawable edge is aligned with left or right of 2431 * the view boundary. If the drawable is null, horizontal parameter is aligned to left or right 2432 * of the view. 2433 * 2434 * @param drawable Drawable. Can be null. 2435 * @param horizontal Horizontal position for the drawable. 2436 * @return The clamped horizontal position for the drawable. 2437 */ 2438 private int clampHorizontalPosition(@Nullable final Drawable drawable, float horizontal) { 2439 horizontal = Math.max(0.5f, horizontal - 0.5f); 2440 if (mTempRect == null) mTempRect = new Rect(); 2441 2442 int drawableWidth = 0; 2443 if (drawable != null) { 2444 drawable.getPadding(mTempRect); 2445 drawableWidth = drawable.getIntrinsicWidth(); 2446 } else { 2447 mTempRect.setEmpty(); 2448 } 2449 2450 int scrollX = mTextView.getScrollX(); 2451 float horizontalDiff = horizontal - scrollX; 2452 int viewClippedWidth = mTextView.getWidth() - mTextView.getCompoundPaddingLeft() 2453 - mTextView.getCompoundPaddingRight(); 2454 2455 final int left; 2456 if (horizontalDiff >= (viewClippedWidth - 1f)) { 2457 // at the rightmost position 2458 left = viewClippedWidth + scrollX - (drawableWidth - mTempRect.right); 2459 } else if (Math.abs(horizontalDiff) <= 1f 2460 || (TextUtils.isEmpty(mTextView.getText()) 2461 && (TextView.VERY_WIDE - scrollX) <= (viewClippedWidth + 1f) 2462 && horizontal <= 1f)) { 2463 // at the leftmost position 2464 left = scrollX - mTempRect.left; 2465 } else { 2466 left = (int) horizontal - mTempRect.left; 2467 } 2468 return left; 2469 } 2470 2471 /** 2472 * Called by the framework in response to a text auto-correction (such as fixing a typo using a 2473 * a dictionary) from the current input method, provided by it calling 2474 * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default 2475 * implementation flashes the background of the corrected word to provide feedback to the user. 2476 * 2477 * @param info The auto correct info about the text that was corrected. 2478 */ 2479 public void onCommitCorrection(CorrectionInfo info) { 2480 if (mCorrectionHighlighter == null) { 2481 mCorrectionHighlighter = new CorrectionHighlighter(); 2482 } else { 2483 mCorrectionHighlighter.invalidate(false); 2484 } 2485 2486 mCorrectionHighlighter.highlight(info); 2487 mUndoInputFilter.freezeLastEdit(); 2488 } 2489 2490 void onScrollChanged() { 2491 if (mPositionListener != null) { 2492 mPositionListener.onScrollChanged(); 2493 } 2494 if (mTextActionMode != null) { 2495 mTextActionMode.invalidateContentRect(); 2496 } 2497 } 2498 2499 /** 2500 * @return True when the TextView isFocused and has a valid zero-length selection (cursor). 2501 */ 2502 private boolean shouldBlink() { 2503 if (!isCursorVisible() || !mTextView.isFocused()) return false; 2504 2505 final int start = mTextView.getSelectionStart(); 2506 if (start < 0) return false; 2507 2508 final int end = mTextView.getSelectionEnd(); 2509 if (end < 0) return false; 2510 2511 return start == end; 2512 } 2513 2514 void makeBlink() { 2515 if (shouldBlink()) { 2516 mShowCursor = SystemClock.uptimeMillis(); 2517 if (mBlink == null) mBlink = new Blink(); 2518 mTextView.removeCallbacks(mBlink); 2519 mTextView.postDelayed(mBlink, BLINK); 2520 } else { 2521 if (mBlink != null) mTextView.removeCallbacks(mBlink); 2522 } 2523 } 2524 2525 private class Blink implements Runnable { 2526 private boolean mCancelled; 2527 2528 public void run() { 2529 if (mCancelled) { 2530 return; 2531 } 2532 2533 mTextView.removeCallbacks(this); 2534 2535 if (shouldBlink()) { 2536 if (mTextView.getLayout() != null) { 2537 mTextView.invalidateCursorPath(); 2538 } 2539 2540 mTextView.postDelayed(this, BLINK); 2541 } 2542 } 2543 2544 void cancel() { 2545 if (!mCancelled) { 2546 mTextView.removeCallbacks(this); 2547 mCancelled = true; 2548 } 2549 } 2550 2551 void uncancel() { 2552 mCancelled = false; 2553 } 2554 } 2555 2556 private DragShadowBuilder getTextThumbnailBuilder(int start, int end) { 2557 TextView shadowView = (TextView) View.inflate(mTextView.getContext(), 2558 com.android.internal.R.layout.text_drag_thumbnail, null); 2559 2560 if (shadowView == null) { 2561 throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); 2562 } 2563 2564 if (end - start > DRAG_SHADOW_MAX_TEXT_LENGTH) { 2565 final long range = getCharClusterRange(start + DRAG_SHADOW_MAX_TEXT_LENGTH); 2566 end = TextUtils.unpackRangeEndFromLong(range); 2567 } 2568 final CharSequence text = mTextView.getTransformedText(start, end); 2569 shadowView.setText(text); 2570 shadowView.setTextColor(mTextView.getTextColors()); 2571 2572 shadowView.setTextAppearance(R.styleable.Theme_textAppearanceLarge); 2573 shadowView.setGravity(Gravity.CENTER); 2574 2575 shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2576 ViewGroup.LayoutParams.WRAP_CONTENT)); 2577 2578 final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); 2579 shadowView.measure(size, size); 2580 2581 shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight()); 2582 shadowView.invalidate(); 2583 return new DragShadowBuilder(shadowView); 2584 } 2585 2586 private static class DragLocalState { 2587 public TextView sourceTextView; 2588 public int start, end; 2589 2590 public DragLocalState(TextView sourceTextView, int start, int end) { 2591 this.sourceTextView = sourceTextView; 2592 this.start = start; 2593 this.end = end; 2594 } 2595 } 2596 2597 void onDrop(DragEvent event) { 2598 SpannableStringBuilder content = new SpannableStringBuilder(); 2599 2600 final DragAndDropPermissions permissions = DragAndDropPermissions.obtain(event); 2601 if (permissions != null) { 2602 permissions.takeTransient(); 2603 } 2604 2605 try { 2606 ClipData clipData = event.getClipData(); 2607 final int itemCount = clipData.getItemCount(); 2608 for (int i = 0; i < itemCount; i++) { 2609 Item item = clipData.getItemAt(i); 2610 content.append(item.coerceToStyledText(mTextView.getContext())); 2611 } 2612 } finally { 2613 if (permissions != null) { 2614 permissions.release(); 2615 } 2616 } 2617 2618 mTextView.beginBatchEdit(); 2619 mUndoInputFilter.freezeLastEdit(); 2620 try { 2621 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 2622 Object localState = event.getLocalState(); 2623 DragLocalState dragLocalState = null; 2624 if (localState instanceof DragLocalState) { 2625 dragLocalState = (DragLocalState) localState; 2626 } 2627 boolean dragDropIntoItself = dragLocalState != null 2628 && dragLocalState.sourceTextView == mTextView; 2629 2630 if (dragDropIntoItself) { 2631 if (offset >= dragLocalState.start && offset < dragLocalState.end) { 2632 // A drop inside the original selection discards the drop. 2633 return; 2634 } 2635 } 2636 2637 final int originalLength = mTextView.getText().length(); 2638 int min = offset; 2639 int max = offset; 2640 2641 Selection.setSelection((Spannable) mTextView.getText(), max); 2642 mTextView.replaceText_internal(min, max, content); 2643 2644 if (dragDropIntoItself) { 2645 int dragSourceStart = dragLocalState.start; 2646 int dragSourceEnd = dragLocalState.end; 2647 if (max <= dragSourceStart) { 2648 // Inserting text before selection has shifted positions 2649 final int shift = mTextView.getText().length() - originalLength; 2650 dragSourceStart += shift; 2651 dragSourceEnd += shift; 2652 } 2653 2654 // Delete original selection 2655 mTextView.deleteText_internal(dragSourceStart, dragSourceEnd); 2656 2657 // Make sure we do not leave two adjacent spaces. 2658 final int prevCharIdx = Math.max(0, dragSourceStart - 1); 2659 final int nextCharIdx = Math.min(mTextView.getText().length(), dragSourceStart + 1); 2660 if (nextCharIdx > prevCharIdx + 1) { 2661 CharSequence t = mTextView.getTransformedText(prevCharIdx, nextCharIdx); 2662 if (Character.isSpaceChar(t.charAt(0)) && Character.isSpaceChar(t.charAt(1))) { 2663 mTextView.deleteText_internal(prevCharIdx, prevCharIdx + 1); 2664 } 2665 } 2666 } 2667 } finally { 2668 mTextView.endBatchEdit(); 2669 mUndoInputFilter.freezeLastEdit(); 2670 } 2671 } 2672 2673 public void addSpanWatchers(Spannable text) { 2674 final int textLength = text.length(); 2675 2676 if (mKeyListener != null) { 2677 text.setSpan(mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2678 } 2679 2680 if (mSpanController == null) { 2681 mSpanController = new SpanController(); 2682 } 2683 text.setSpan(mSpanController, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2684 } 2685 2686 void setContextMenuAnchor(float x, float y) { 2687 mContextMenuAnchorX = x; 2688 mContextMenuAnchorY = y; 2689 } 2690 2691 void onCreateContextMenu(ContextMenu menu) { 2692 if (mIsBeingLongClicked || Float.isNaN(mContextMenuAnchorX) 2693 || Float.isNaN(mContextMenuAnchorY)) { 2694 return; 2695 } 2696 final int offset = mTextView.getOffsetForPosition(mContextMenuAnchorX, mContextMenuAnchorY); 2697 if (offset == -1) { 2698 return; 2699 } 2700 2701 stopTextActionModeWithPreservingSelection(); 2702 if (mTextView.canSelectText()) { 2703 final boolean isOnSelection = mTextView.hasSelection() 2704 && offset >= mTextView.getSelectionStart() 2705 && offset <= mTextView.getSelectionEnd(); 2706 if (!isOnSelection) { 2707 // Right clicked position is not on the selection. Remove the selection and move the 2708 // cursor to the right clicked position. 2709 Selection.setSelection((Spannable) mTextView.getText(), offset); 2710 stopTextActionMode(); 2711 } 2712 } 2713 2714 if (shouldOfferToShowSuggestions()) { 2715 final SuggestionInfo[] suggestionInfoArray = 2716 new SuggestionInfo[SuggestionSpan.SUGGESTIONS_MAX_SIZE]; 2717 for (int i = 0; i < suggestionInfoArray.length; i++) { 2718 suggestionInfoArray[i] = new SuggestionInfo(); 2719 } 2720 final SubMenu subMenu = menu.addSubMenu(Menu.NONE, Menu.NONE, MENU_ITEM_ORDER_REPLACE, 2721 com.android.internal.R.string.replace); 2722 final int numItems = mSuggestionHelper.getSuggestionInfo(suggestionInfoArray, null); 2723 for (int i = 0; i < numItems; i++) { 2724 final SuggestionInfo info = suggestionInfoArray[i]; 2725 subMenu.add(Menu.NONE, Menu.NONE, i, info.mText) 2726 .setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() { 2727 @Override 2728 public boolean onMenuItemClick(MenuItem item) { 2729 replaceWithSuggestion(info); 2730 return true; 2731 } 2732 }); 2733 } 2734 } 2735 2736 menu.add(Menu.NONE, TextView.ID_UNDO, MENU_ITEM_ORDER_UNDO, 2737 com.android.internal.R.string.undo) 2738 .setAlphabeticShortcut('z') 2739 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2740 .setEnabled(mTextView.canUndo()); 2741 menu.add(Menu.NONE, TextView.ID_REDO, MENU_ITEM_ORDER_REDO, 2742 com.android.internal.R.string.redo) 2743 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2744 .setEnabled(mTextView.canRedo()); 2745 2746 menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, 2747 com.android.internal.R.string.cut) 2748 .setAlphabeticShortcut('x') 2749 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2750 .setEnabled(mTextView.canCut()); 2751 menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, 2752 com.android.internal.R.string.copy) 2753 .setAlphabeticShortcut('c') 2754 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2755 .setEnabled(mTextView.canCopy()); 2756 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, 2757 com.android.internal.R.string.paste) 2758 .setAlphabeticShortcut('v') 2759 .setEnabled(mTextView.canPaste()) 2760 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2761 menu.add(Menu.NONE, TextView.ID_PASTE_AS_PLAIN_TEXT, MENU_ITEM_ORDER_PASTE_AS_PLAIN_TEXT, 2762 com.android.internal.R.string.paste_as_plain_text) 2763 .setEnabled(mTextView.canPasteAsPlainText()) 2764 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2765 menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, 2766 com.android.internal.R.string.share) 2767 .setEnabled(mTextView.canShare()) 2768 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2769 menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, 2770 com.android.internal.R.string.selectAll) 2771 .setAlphabeticShortcut('a') 2772 .setEnabled(mTextView.canSelectAllText()) 2773 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2774 menu.add(Menu.NONE, TextView.ID_AUTOFILL, MENU_ITEM_ORDER_AUTOFILL, 2775 android.R.string.autofill) 2776 .setEnabled(mTextView.canRequestAutofill()) 2777 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2778 2779 mPreserveSelection = true; 2780 } 2781 2782 @Nullable 2783 private SuggestionSpan findEquivalentSuggestionSpan( 2784 @NonNull SuggestionSpanInfo suggestionSpanInfo) { 2785 final Editable editable = (Editable) mTextView.getText(); 2786 if (editable.getSpanStart(suggestionSpanInfo.mSuggestionSpan) >= 0) { 2787 // Exactly same span is found. 2788 return suggestionSpanInfo.mSuggestionSpan; 2789 } 2790 // Suggestion span couldn't be found. Try to find a suggestion span that has the same 2791 // contents. 2792 final SuggestionSpan[] suggestionSpans = editable.getSpans(suggestionSpanInfo.mSpanStart, 2793 suggestionSpanInfo.mSpanEnd, SuggestionSpan.class); 2794 for (final SuggestionSpan suggestionSpan : suggestionSpans) { 2795 final int start = editable.getSpanStart(suggestionSpan); 2796 if (start != suggestionSpanInfo.mSpanStart) { 2797 continue; 2798 } 2799 final int end = editable.getSpanEnd(suggestionSpan); 2800 if (end != suggestionSpanInfo.mSpanEnd) { 2801 continue; 2802 } 2803 if (suggestionSpan.equals(suggestionSpanInfo.mSuggestionSpan)) { 2804 return suggestionSpan; 2805 } 2806 } 2807 return null; 2808 } 2809 2810 private void replaceWithSuggestion(@NonNull final SuggestionInfo suggestionInfo) { 2811 final SuggestionSpan targetSuggestionSpan = findEquivalentSuggestionSpan( 2812 suggestionInfo.mSuggestionSpanInfo); 2813 if (targetSuggestionSpan == null) { 2814 // Span has been removed 2815 return; 2816 } 2817 final Editable editable = (Editable) mTextView.getText(); 2818 final int spanStart = editable.getSpanStart(targetSuggestionSpan); 2819 final int spanEnd = editable.getSpanEnd(targetSuggestionSpan); 2820 if (spanStart < 0 || spanEnd <= spanStart) { 2821 // Span has been removed 2822 return; 2823 } 2824 2825 final String originalText = TextUtils.substring(editable, spanStart, spanEnd); 2826 // SuggestionSpans are removed by replace: save them before 2827 SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd, 2828 SuggestionSpan.class); 2829 final int length = suggestionSpans.length; 2830 int[] suggestionSpansStarts = new int[length]; 2831 int[] suggestionSpansEnds = new int[length]; 2832 int[] suggestionSpansFlags = new int[length]; 2833 for (int i = 0; i < length; i++) { 2834 final SuggestionSpan suggestionSpan = suggestionSpans[i]; 2835 suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan); 2836 suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan); 2837 suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan); 2838 2839 // Remove potential misspelled flags 2840 int suggestionSpanFlags = suggestionSpan.getFlags(); 2841 if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) != 0) { 2842 suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED; 2843 suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 2844 suggestionSpan.setFlags(suggestionSpanFlags); 2845 } 2846 } 2847 2848 // Notify source IME of the suggestion pick. Do this before swapping texts. 2849 targetSuggestionSpan.notifySelection( 2850 mTextView.getContext(), originalText, suggestionInfo.mSuggestionIndex); 2851 2852 // Swap text content between actual text and Suggestion span 2853 final int suggestionStart = suggestionInfo.mSuggestionStart; 2854 final int suggestionEnd = suggestionInfo.mSuggestionEnd; 2855 final String suggestion = suggestionInfo.mText.subSequence( 2856 suggestionStart, suggestionEnd).toString(); 2857 mTextView.replaceText_internal(spanStart, spanEnd, suggestion); 2858 2859 String[] suggestions = targetSuggestionSpan.getSuggestions(); 2860 suggestions[suggestionInfo.mSuggestionIndex] = originalText; 2861 2862 // Restore previous SuggestionSpans 2863 final int lengthDelta = suggestion.length() - (spanEnd - spanStart); 2864 for (int i = 0; i < length; i++) { 2865 // Only spans that include the modified region make sense after replacement 2866 // Spans partially included in the replaced region are removed, there is no 2867 // way to assign them a valid range after replacement 2868 if (suggestionSpansStarts[i] <= spanStart && suggestionSpansEnds[i] >= spanEnd) { 2869 mTextView.setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i], 2870 suggestionSpansEnds[i] + lengthDelta, suggestionSpansFlags[i]); 2871 } 2872 } 2873 // Move cursor at the end of the replaced word 2874 final int newCursorPosition = spanEnd + lengthDelta; 2875 mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); 2876 } 2877 2878 private final MenuItem.OnMenuItemClickListener mOnContextMenuItemClickListener = 2879 new MenuItem.OnMenuItemClickListener() { 2880 @Override 2881 public boolean onMenuItemClick(MenuItem item) { 2882 if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { 2883 return true; 2884 } 2885 return mTextView.onTextContextMenuItem(item.getItemId()); 2886 } 2887 }; 2888 2889 /** 2890 * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related 2891 * pop-up should be displayed. 2892 * Also monitors {@link Selection} to call back to the attached input method. 2893 */ 2894 private class SpanController implements SpanWatcher { 2895 2896 private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs 2897 2898 private EasyEditPopupWindow mPopupWindow; 2899 2900 private Runnable mHidePopup; 2901 2902 // This function is pure but inner classes can't have static functions 2903 private boolean isNonIntermediateSelectionSpan(final Spannable text, 2904 final Object span) { 2905 return (Selection.SELECTION_START == span || Selection.SELECTION_END == span) 2906 && (text.getSpanFlags(span) & Spanned.SPAN_INTERMEDIATE) == 0; 2907 } 2908 2909 @Override 2910 public void onSpanAdded(Spannable text, Object span, int start, int end) { 2911 if (isNonIntermediateSelectionSpan(text, span)) { 2912 sendUpdateSelection(); 2913 } else if (span instanceof EasyEditSpan) { 2914 if (mPopupWindow == null) { 2915 mPopupWindow = new EasyEditPopupWindow(); 2916 mHidePopup = new Runnable() { 2917 @Override 2918 public void run() { 2919 hide(); 2920 } 2921 }; 2922 } 2923 2924 // Make sure there is only at most one EasyEditSpan in the text 2925 if (mPopupWindow.mEasyEditSpan != null) { 2926 mPopupWindow.mEasyEditSpan.setDeleteEnabled(false); 2927 } 2928 2929 mPopupWindow.setEasyEditSpan((EasyEditSpan) span); 2930 mPopupWindow.setOnDeleteListener(new EasyEditDeleteListener() { 2931 @Override 2932 public void onDeleteClick(EasyEditSpan span) { 2933 Editable editable = (Editable) mTextView.getText(); 2934 int start = editable.getSpanStart(span); 2935 int end = editable.getSpanEnd(span); 2936 if (start >= 0 && end >= 0) { 2937 sendEasySpanNotification(EasyEditSpan.TEXT_DELETED, span); 2938 mTextView.deleteText_internal(start, end); 2939 } 2940 editable.removeSpan(span); 2941 } 2942 }); 2943 2944 if (mTextView.getWindowVisibility() != View.VISIBLE) { 2945 // The window is not visible yet, ignore the text change. 2946 return; 2947 } 2948 2949 if (mTextView.getLayout() == null) { 2950 // The view has not been laid out yet, ignore the text change 2951 return; 2952 } 2953 2954 if (extractedTextModeWillBeStarted()) { 2955 // The input is in extract mode. Do not handle the easy edit in 2956 // the original TextView, as the ExtractEditText will do 2957 return; 2958 } 2959 2960 mPopupWindow.show(); 2961 mTextView.removeCallbacks(mHidePopup); 2962 mTextView.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS); 2963 } 2964 } 2965 2966 @Override 2967 public void onSpanRemoved(Spannable text, Object span, int start, int end) { 2968 if (isNonIntermediateSelectionSpan(text, span)) { 2969 sendUpdateSelection(); 2970 } else if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { 2971 hide(); 2972 } 2973 } 2974 2975 @Override 2976 public void onSpanChanged(Spannable text, Object span, int previousStart, int previousEnd, 2977 int newStart, int newEnd) { 2978 if (isNonIntermediateSelectionSpan(text, span)) { 2979 sendUpdateSelection(); 2980 } else if (mPopupWindow != null && span instanceof EasyEditSpan) { 2981 EasyEditSpan easyEditSpan = (EasyEditSpan) span; 2982 sendEasySpanNotification(EasyEditSpan.TEXT_MODIFIED, easyEditSpan); 2983 text.removeSpan(easyEditSpan); 2984 } 2985 } 2986 2987 public void hide() { 2988 if (mPopupWindow != null) { 2989 mPopupWindow.hide(); 2990 mTextView.removeCallbacks(mHidePopup); 2991 } 2992 } 2993 2994 private void sendEasySpanNotification(int textChangedType, EasyEditSpan span) { 2995 try { 2996 PendingIntent pendingIntent = span.getPendingIntent(); 2997 if (pendingIntent != null) { 2998 Intent intent = new Intent(); 2999 intent.putExtra(EasyEditSpan.EXTRA_TEXT_CHANGED_TYPE, textChangedType); 3000 pendingIntent.send(mTextView.getContext(), 0, intent); 3001 } 3002 } catch (CanceledException e) { 3003 // This should not happen, as we should try to send the intent only once. 3004 Log.w(TAG, "PendingIntent for notification cannot be sent", e); 3005 } 3006 } 3007 } 3008 3009 /** 3010 * Listens for the delete event triggered by {@link EasyEditPopupWindow}. 3011 */ 3012 private interface EasyEditDeleteListener { 3013 3014 /** 3015 * Clicks the delete pop-up. 3016 */ 3017 void onDeleteClick(EasyEditSpan span); 3018 } 3019 3020 /** 3021 * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled 3022 * by {@link SpanController}. 3023 */ 3024 private class EasyEditPopupWindow extends PinnedPopupWindow 3025 implements OnClickListener { 3026 private static final int POPUP_TEXT_LAYOUT = 3027 com.android.internal.R.layout.text_edit_action_popup_text; 3028 private TextView mDeleteTextView; 3029 private EasyEditSpan mEasyEditSpan; 3030 private EasyEditDeleteListener mOnDeleteListener; 3031 3032 @Override 3033 protected void createPopupWindow() { 3034 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 3035 com.android.internal.R.attr.textSelectHandleWindowStyle); 3036 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 3037 mPopupWindow.setClippingEnabled(true); 3038 } 3039 3040 @Override 3041 protected void initContentView() { 3042 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 3043 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 3044 mContentView = linearLayout; 3045 mContentView.setBackgroundResource( 3046 com.android.internal.R.drawable.text_edit_side_paste_window); 3047 3048 LayoutInflater inflater = (LayoutInflater) mTextView.getContext() 3049 .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 3050 3051 LayoutParams wrapContent = new LayoutParams( 3052 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 3053 3054 mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 3055 mDeleteTextView.setLayoutParams(wrapContent); 3056 mDeleteTextView.setText(com.android.internal.R.string.delete); 3057 mDeleteTextView.setOnClickListener(this); 3058 mContentView.addView(mDeleteTextView); 3059 } 3060 3061 public void setEasyEditSpan(EasyEditSpan easyEditSpan) { 3062 mEasyEditSpan = easyEditSpan; 3063 } 3064 3065 private void setOnDeleteListener(EasyEditDeleteListener listener) { 3066 mOnDeleteListener = listener; 3067 } 3068 3069 @Override 3070 public void onClick(View view) { 3071 if (view == mDeleteTextView 3072 && mEasyEditSpan != null && mEasyEditSpan.isDeleteEnabled() 3073 && mOnDeleteListener != null) { 3074 mOnDeleteListener.onDeleteClick(mEasyEditSpan); 3075 } 3076 } 3077 3078 @Override 3079 public void hide() { 3080 if (mEasyEditSpan != null) { 3081 mEasyEditSpan.setDeleteEnabled(false); 3082 } 3083 mOnDeleteListener = null; 3084 super.hide(); 3085 } 3086 3087 @Override 3088 protected int getTextOffset() { 3089 // Place the pop-up at the end of the span 3090 Editable editable = (Editable) mTextView.getText(); 3091 return editable.getSpanEnd(mEasyEditSpan); 3092 } 3093 3094 @Override 3095 protected int getVerticalLocalPosition(int line) { 3096 final Layout layout = mTextView.getLayout(); 3097 return layout.getLineBottomWithoutSpacing(line); 3098 } 3099 3100 @Override 3101 protected int clipVertically(int positionY) { 3102 // As we display the pop-up below the span, no vertical clipping is required. 3103 return positionY; 3104 } 3105 } 3106 3107 private class PositionListener implements ViewTreeObserver.OnPreDrawListener { 3108 // 3 handles 3109 // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others) 3110 // 1 CursorAnchorInfoNotifier 3111 private static final int MAXIMUM_NUMBER_OF_LISTENERS = 7; 3112 private TextViewPositionListener[] mPositionListeners = 3113 new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS]; 3114 private boolean[] mCanMove = new boolean[MAXIMUM_NUMBER_OF_LISTENERS]; 3115 private boolean mPositionHasChanged = true; 3116 // Absolute position of the TextView with respect to its parent window 3117 private int mPositionX, mPositionY; 3118 private int mPositionXOnScreen, mPositionYOnScreen; 3119 private int mNumberOfListeners; 3120 private boolean mScrollHasChanged; 3121 final int[] mTempCoords = new int[2]; 3122 3123 public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) { 3124 if (mNumberOfListeners == 0) { 3125 updatePosition(); 3126 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 3127 vto.addOnPreDrawListener(this); 3128 } 3129 3130 int emptySlotIndex = -1; 3131 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 3132 TextViewPositionListener listener = mPositionListeners[i]; 3133 if (listener == positionListener) { 3134 return; 3135 } else if (emptySlotIndex < 0 && listener == null) { 3136 emptySlotIndex = i; 3137 } 3138 } 3139 3140 mPositionListeners[emptySlotIndex] = positionListener; 3141 mCanMove[emptySlotIndex] = canMove; 3142 mNumberOfListeners++; 3143 } 3144 3145 public void removeSubscriber(TextViewPositionListener positionListener) { 3146 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 3147 if (mPositionListeners[i] == positionListener) { 3148 mPositionListeners[i] = null; 3149 mNumberOfListeners--; 3150 break; 3151 } 3152 } 3153 3154 if (mNumberOfListeners == 0) { 3155 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 3156 vto.removeOnPreDrawListener(this); 3157 } 3158 } 3159 3160 public int getPositionX() { 3161 return mPositionX; 3162 } 3163 3164 public int getPositionY() { 3165 return mPositionY; 3166 } 3167 3168 public int getPositionXOnScreen() { 3169 return mPositionXOnScreen; 3170 } 3171 3172 public int getPositionYOnScreen() { 3173 return mPositionYOnScreen; 3174 } 3175 3176 @Override 3177 public boolean onPreDraw() { 3178 updatePosition(); 3179 3180 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 3181 if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) { 3182 TextViewPositionListener positionListener = mPositionListeners[i]; 3183 if (positionListener != null) { 3184 positionListener.updatePosition(mPositionX, mPositionY, 3185 mPositionHasChanged, mScrollHasChanged); 3186 } 3187 } 3188 } 3189 3190 mScrollHasChanged = false; 3191 return true; 3192 } 3193 3194 private void updatePosition() { 3195 mTextView.getLocationInWindow(mTempCoords); 3196 3197 mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY; 3198 3199 mPositionX = mTempCoords[0]; 3200 mPositionY = mTempCoords[1]; 3201 3202 mTextView.getLocationOnScreen(mTempCoords); 3203 3204 mPositionXOnScreen = mTempCoords[0]; 3205 mPositionYOnScreen = mTempCoords[1]; 3206 } 3207 3208 public void onScrollChanged() { 3209 mScrollHasChanged = true; 3210 } 3211 } 3212 3213 private abstract class PinnedPopupWindow implements TextViewPositionListener { 3214 protected PopupWindow mPopupWindow; 3215 protected ViewGroup mContentView; 3216 int mPositionX, mPositionY; 3217 int mClippingLimitLeft, mClippingLimitRight; 3218 3219 protected abstract void createPopupWindow(); 3220 protected abstract void initContentView(); 3221 protected abstract int getTextOffset(); 3222 protected abstract int getVerticalLocalPosition(int line); 3223 protected abstract int clipVertically(int positionY); 3224 protected void setUp() { 3225 } 3226 3227 public PinnedPopupWindow() { 3228 // Due to calling subclass methods in base constructor, subclass constructor is not 3229 // called before subclass methods, e.g. createPopupWindow or initContentView. To give 3230 // a chance to initialize subclasses, call setUp() method here. 3231 // TODO: It is good to extract non trivial initialization code from constructor. 3232 setUp(); 3233 3234 createPopupWindow(); 3235 3236 mPopupWindow.setWindowLayoutType( 3237 WindowManager.LayoutParams.TYPE_APPLICATION_ABOVE_SUB_PANEL); 3238 mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 3239 mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 3240 3241 initContentView(); 3242 3243 LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 3244 ViewGroup.LayoutParams.WRAP_CONTENT); 3245 mContentView.setLayoutParams(wrapContent); 3246 3247 mPopupWindow.setContentView(mContentView); 3248 } 3249 3250 public void show() { 3251 getPositionListener().addSubscriber(this, false /* offset is fixed */); 3252 3253 computeLocalPosition(); 3254 3255 final PositionListener positionListener = getPositionListener(); 3256 updatePosition(positionListener.getPositionX(), positionListener.getPositionY()); 3257 } 3258 3259 protected void measureContent() { 3260 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3261 mContentView.measure( 3262 View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, 3263 View.MeasureSpec.AT_MOST), 3264 View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, 3265 View.MeasureSpec.AT_MOST)); 3266 } 3267 3268 /* The popup window will be horizontally centered on the getTextOffset() and vertically 3269 * positioned according to viewportToContentHorizontalOffset. 3270 * 3271 * This method assumes that mContentView has properly been measured from its content. */ 3272 private void computeLocalPosition() { 3273 measureContent(); 3274 final int width = mContentView.getMeasuredWidth(); 3275 final int offset = getTextOffset(); 3276 mPositionX = (int) (mTextView.getLayout().getPrimaryHorizontal(offset) - width / 2.0f); 3277 mPositionX += mTextView.viewportToContentHorizontalOffset(); 3278 3279 final int line = mTextView.getLayout().getLineForOffset(offset); 3280 mPositionY = getVerticalLocalPosition(line); 3281 mPositionY += mTextView.viewportToContentVerticalOffset(); 3282 } 3283 3284 private void updatePosition(int parentPositionX, int parentPositionY) { 3285 int positionX = parentPositionX + mPositionX; 3286 int positionY = parentPositionY + mPositionY; 3287 3288 positionY = clipVertically(positionY); 3289 3290 // Horizontal clipping 3291 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3292 final int width = mContentView.getMeasuredWidth(); 3293 positionX = Math.min( 3294 displayMetrics.widthPixels - width + mClippingLimitRight, positionX); 3295 positionX = Math.max(-mClippingLimitLeft, positionX); 3296 3297 if (isShowing()) { 3298 mPopupWindow.update(positionX, positionY, -1, -1); 3299 } else { 3300 mPopupWindow.showAtLocation(mTextView, Gravity.NO_GRAVITY, 3301 positionX, positionY); 3302 } 3303 } 3304 3305 public void hide() { 3306 if (!isShowing()) { 3307 return; 3308 } 3309 mPopupWindow.dismiss(); 3310 getPositionListener().removeSubscriber(this); 3311 } 3312 3313 @Override 3314 public void updatePosition(int parentPositionX, int parentPositionY, 3315 boolean parentPositionChanged, boolean parentScrolled) { 3316 // Either parentPositionChanged or parentScrolled is true, check if still visible 3317 if (isShowing() && isOffsetVisible(getTextOffset())) { 3318 if (parentScrolled) computeLocalPosition(); 3319 updatePosition(parentPositionX, parentPositionY); 3320 } else { 3321 hide(); 3322 } 3323 } 3324 3325 public boolean isShowing() { 3326 return mPopupWindow.isShowing(); 3327 } 3328 } 3329 3330 private static final class SuggestionInfo { 3331 // Range of actual suggestion within mText 3332 int mSuggestionStart, mSuggestionEnd; 3333 3334 // The SuggestionSpan that this TextView represents 3335 final SuggestionSpanInfo mSuggestionSpanInfo = new SuggestionSpanInfo(); 3336 3337 // The index of this suggestion inside suggestionSpan 3338 int mSuggestionIndex; 3339 3340 final SpannableStringBuilder mText = new SpannableStringBuilder(); 3341 3342 void clear() { 3343 mSuggestionSpanInfo.clear(); 3344 mText.clear(); 3345 } 3346 3347 // Utility method to set attributes about a SuggestionSpan. 3348 void setSpanInfo(SuggestionSpan span, int spanStart, int spanEnd) { 3349 mSuggestionSpanInfo.mSuggestionSpan = span; 3350 mSuggestionSpanInfo.mSpanStart = spanStart; 3351 mSuggestionSpanInfo.mSpanEnd = spanEnd; 3352 } 3353 } 3354 3355 private static final class SuggestionSpanInfo { 3356 // The SuggestionSpan; 3357 @Nullable 3358 SuggestionSpan mSuggestionSpan; 3359 3360 // The SuggestionSpan start position 3361 int mSpanStart; 3362 3363 // The SuggestionSpan end position 3364 int mSpanEnd; 3365 3366 void clear() { 3367 mSuggestionSpan = null; 3368 } 3369 } 3370 3371 private class SuggestionHelper { 3372 private final Comparator<SuggestionSpan> mSuggestionSpanComparator = 3373 new SuggestionSpanComparator(); 3374 private final HashMap<SuggestionSpan, Integer> mSpansLengths = 3375 new HashMap<SuggestionSpan, Integer>(); 3376 3377 private class SuggestionSpanComparator implements Comparator<SuggestionSpan> { 3378 public int compare(SuggestionSpan span1, SuggestionSpan span2) { 3379 final int flag1 = span1.getFlags(); 3380 final int flag2 = span2.getFlags(); 3381 if (flag1 != flag2) { 3382 // The order here should match what is used in updateDrawState 3383 final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 3384 final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 3385 final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0; 3386 final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0; 3387 if (easy1 && !misspelled1) return -1; 3388 if (easy2 && !misspelled2) return 1; 3389 if (misspelled1) return -1; 3390 if (misspelled2) return 1; 3391 } 3392 3393 return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue(); 3394 } 3395 } 3396 3397 /** 3398 * Returns the suggestion spans that cover the current cursor position. The suggestion 3399 * spans are sorted according to the length of text that they are attached to. 3400 */ 3401 private SuggestionSpan[] getSortedSuggestionSpans() { 3402 int pos = mTextView.getSelectionStart(); 3403 Spannable spannable = (Spannable) mTextView.getText(); 3404 SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class); 3405 3406 mSpansLengths.clear(); 3407 for (SuggestionSpan suggestionSpan : suggestionSpans) { 3408 int start = spannable.getSpanStart(suggestionSpan); 3409 int end = spannable.getSpanEnd(suggestionSpan); 3410 mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start)); 3411 } 3412 3413 // The suggestions are sorted according to their types (easy correction first, then 3414 // misspelled) and to the length of the text that they cover (shorter first). 3415 Arrays.sort(suggestionSpans, mSuggestionSpanComparator); 3416 mSpansLengths.clear(); 3417 3418 return suggestionSpans; 3419 } 3420 3421 /** 3422 * Gets the SuggestionInfo list that contains suggestion information at the current cursor 3423 * position. 3424 * 3425 * @param suggestionInfos SuggestionInfo array the results will be set. 3426 * @param misspelledSpanInfo a struct the misspelled SuggestionSpan info will be set. 3427 * @return the number of suggestions actually fetched. 3428 */ 3429 public int getSuggestionInfo(SuggestionInfo[] suggestionInfos, 3430 @Nullable SuggestionSpanInfo misspelledSpanInfo) { 3431 final Spannable spannable = (Spannable) mTextView.getText(); 3432 final SuggestionSpan[] suggestionSpans = getSortedSuggestionSpans(); 3433 final int nbSpans = suggestionSpans.length; 3434 if (nbSpans == 0) return 0; 3435 3436 int numberOfSuggestions = 0; 3437 for (final SuggestionSpan suggestionSpan : suggestionSpans) { 3438 final int spanStart = spannable.getSpanStart(suggestionSpan); 3439 final int spanEnd = spannable.getSpanEnd(suggestionSpan); 3440 3441 if (misspelledSpanInfo != null 3442 && (suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) { 3443 misspelledSpanInfo.mSuggestionSpan = suggestionSpan; 3444 misspelledSpanInfo.mSpanStart = spanStart; 3445 misspelledSpanInfo.mSpanEnd = spanEnd; 3446 } 3447 3448 final String[] suggestions = suggestionSpan.getSuggestions(); 3449 final int nbSuggestions = suggestions.length; 3450 suggestionLoop: 3451 for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) { 3452 final String suggestion = suggestions[suggestionIndex]; 3453 for (int i = 0; i < numberOfSuggestions; i++) { 3454 final SuggestionInfo otherSuggestionInfo = suggestionInfos[i]; 3455 if (otherSuggestionInfo.mText.toString().equals(suggestion)) { 3456 final int otherSpanStart = 3457 otherSuggestionInfo.mSuggestionSpanInfo.mSpanStart; 3458 final int otherSpanEnd = 3459 otherSuggestionInfo.mSuggestionSpanInfo.mSpanEnd; 3460 if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) { 3461 continue suggestionLoop; 3462 } 3463 } 3464 } 3465 3466 SuggestionInfo suggestionInfo = suggestionInfos[numberOfSuggestions]; 3467 suggestionInfo.setSpanInfo(suggestionSpan, spanStart, spanEnd); 3468 suggestionInfo.mSuggestionIndex = suggestionIndex; 3469 suggestionInfo.mSuggestionStart = 0; 3470 suggestionInfo.mSuggestionEnd = suggestion.length(); 3471 suggestionInfo.mText.replace(0, suggestionInfo.mText.length(), suggestion); 3472 numberOfSuggestions++; 3473 if (numberOfSuggestions >= suggestionInfos.length) { 3474 return numberOfSuggestions; 3475 } 3476 } 3477 } 3478 return numberOfSuggestions; 3479 } 3480 } 3481 3482 @VisibleForTesting 3483 public class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener { 3484 private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE; 3485 3486 // Key of intent extras for inserting new word into user dictionary. 3487 private static final String USER_DICTIONARY_EXTRA_WORD = "word"; 3488 private static final String USER_DICTIONARY_EXTRA_LOCALE = "locale"; 3489 3490 private SuggestionInfo[] mSuggestionInfos; 3491 private int mNumberOfSuggestions; 3492 private boolean mCursorWasVisibleBeforeSuggestions; 3493 private boolean mIsShowingUp = false; 3494 private SuggestionAdapter mSuggestionsAdapter; 3495 private TextAppearanceSpan mHighlightSpan; // TODO: Make mHighlightSpan final. 3496 private TextView mAddToDictionaryButton; 3497 private TextView mDeleteButton; 3498 private ListView mSuggestionListView; 3499 private final SuggestionSpanInfo mMisspelledSpanInfo = new SuggestionSpanInfo(); 3500 private int mContainerMarginWidth; 3501 private int mContainerMarginTop; 3502 private LinearLayout mContainerView; 3503 private Context mContext; // TODO: Make mContext final. 3504 3505 private class CustomPopupWindow extends PopupWindow { 3506 3507 @Override 3508 public void dismiss() { 3509 if (!isShowing()) { 3510 return; 3511 } 3512 super.dismiss(); 3513 getPositionListener().removeSubscriber(SuggestionsPopupWindow.this); 3514 3515 // Safe cast since show() checks that mTextView.getText() is an Editable 3516 ((Spannable) mTextView.getText()).removeSpan(mSuggestionRangeSpan); 3517 3518 mTextView.setCursorVisible(mCursorWasVisibleBeforeSuggestions); 3519 if (hasInsertionController() && !extractedTextModeWillBeStarted()) { 3520 getInsertionController().show(); 3521 } 3522 } 3523 } 3524 3525 public SuggestionsPopupWindow() { 3526 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 3527 } 3528 3529 @Override 3530 protected void setUp() { 3531 mContext = applyDefaultTheme(mTextView.getContext()); 3532 mHighlightSpan = new TextAppearanceSpan(mContext, 3533 mTextView.mTextEditSuggestionHighlightStyle); 3534 } 3535 3536 private Context applyDefaultTheme(Context originalContext) { 3537 TypedArray a = originalContext.obtainStyledAttributes( 3538 new int[]{com.android.internal.R.attr.isLightTheme}); 3539 boolean isLightTheme = a.getBoolean(0, true); 3540 int themeId = isLightTheme ? R.style.ThemeOverlay_Material_Light 3541 : R.style.ThemeOverlay_Material_Dark; 3542 a.recycle(); 3543 return new ContextThemeWrapper(originalContext, themeId); 3544 } 3545 3546 @Override 3547 protected void createPopupWindow() { 3548 mPopupWindow = new CustomPopupWindow(); 3549 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 3550 mPopupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT)); 3551 mPopupWindow.setFocusable(true); 3552 mPopupWindow.setClippingEnabled(false); 3553 } 3554 3555 @Override 3556 protected void initContentView() { 3557 final LayoutInflater inflater = (LayoutInflater) mContext.getSystemService( 3558 Context.LAYOUT_INFLATER_SERVICE); 3559 mContentView = (ViewGroup) inflater.inflate( 3560 mTextView.mTextEditSuggestionContainerLayout, null); 3561 3562 mContainerView = (LinearLayout) mContentView.findViewById( 3563 com.android.internal.R.id.suggestionWindowContainer); 3564 ViewGroup.MarginLayoutParams lp = 3565 (ViewGroup.MarginLayoutParams) mContainerView.getLayoutParams(); 3566 mContainerMarginWidth = lp.leftMargin + lp.rightMargin; 3567 mContainerMarginTop = lp.topMargin; 3568 mClippingLimitLeft = lp.leftMargin; 3569 mClippingLimitRight = lp.rightMargin; 3570 3571 mSuggestionListView = (ListView) mContentView.findViewById( 3572 com.android.internal.R.id.suggestionContainer); 3573 3574 mSuggestionsAdapter = new SuggestionAdapter(); 3575 mSuggestionListView.setAdapter(mSuggestionsAdapter); 3576 mSuggestionListView.setOnItemClickListener(this); 3577 3578 // Inflate the suggestion items once and for all. 3579 mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS]; 3580 for (int i = 0; i < mSuggestionInfos.length; i++) { 3581 mSuggestionInfos[i] = new SuggestionInfo(); 3582 } 3583 3584 mAddToDictionaryButton = (TextView) mContentView.findViewById( 3585 com.android.internal.R.id.addToDictionaryButton); 3586 mAddToDictionaryButton.setOnClickListener(new View.OnClickListener() { 3587 public void onClick(View v) { 3588 final SuggestionSpan misspelledSpan = 3589 findEquivalentSuggestionSpan(mMisspelledSpanInfo); 3590 if (misspelledSpan == null) { 3591 // Span has been removed. 3592 return; 3593 } 3594 final Editable editable = (Editable) mTextView.getText(); 3595 final int spanStart = editable.getSpanStart(misspelledSpan); 3596 final int spanEnd = editable.getSpanEnd(misspelledSpan); 3597 if (spanStart < 0 || spanEnd <= spanStart) { 3598 return; 3599 } 3600 final String originalText = TextUtils.substring(editable, spanStart, spanEnd); 3601 3602 final Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT); 3603 intent.putExtra(USER_DICTIONARY_EXTRA_WORD, originalText); 3604 intent.putExtra(USER_DICTIONARY_EXTRA_LOCALE, 3605 mTextView.getTextServicesLocale().toString()); 3606 intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); 3607 mTextView.getContext().startActivity(intent); 3608 // There is no way to know if the word was indeed added. Re-check. 3609 // TODO The ExtractEditText should remove the span in the original text instead 3610 editable.removeSpan(mMisspelledSpanInfo.mSuggestionSpan); 3611 Selection.setSelection(editable, spanEnd); 3612 updateSpellCheckSpans(spanStart, spanEnd, false); 3613 hideWithCleanUp(); 3614 } 3615 }); 3616 3617 mDeleteButton = (TextView) mContentView.findViewById( 3618 com.android.internal.R.id.deleteButton); 3619 mDeleteButton.setOnClickListener(new View.OnClickListener() { 3620 public void onClick(View v) { 3621 final Editable editable = (Editable) mTextView.getText(); 3622 3623 final int spanUnionStart = editable.getSpanStart(mSuggestionRangeSpan); 3624 int spanUnionEnd = editable.getSpanEnd(mSuggestionRangeSpan); 3625 if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) { 3626 // Do not leave two adjacent spaces after deletion, or one at beginning of 3627 // text 3628 if (spanUnionEnd < editable.length() 3629 && Character.isSpaceChar(editable.charAt(spanUnionEnd)) 3630 && (spanUnionStart == 0 3631 || Character.isSpaceChar( 3632 editable.charAt(spanUnionStart - 1)))) { 3633 spanUnionEnd = spanUnionEnd + 1; 3634 } 3635 mTextView.deleteText_internal(spanUnionStart, spanUnionEnd); 3636 } 3637 hideWithCleanUp(); 3638 } 3639 }); 3640 3641 } 3642 3643 public boolean isShowingUp() { 3644 return mIsShowingUp; 3645 } 3646 3647 public void onParentLostFocus() { 3648 mIsShowingUp = false; 3649 } 3650 3651 private class SuggestionAdapter extends BaseAdapter { 3652 private LayoutInflater mInflater = (LayoutInflater) mContext.getSystemService( 3653 Context.LAYOUT_INFLATER_SERVICE); 3654 3655 @Override 3656 public int getCount() { 3657 return mNumberOfSuggestions; 3658 } 3659 3660 @Override 3661 public Object getItem(int position) { 3662 return mSuggestionInfos[position]; 3663 } 3664 3665 @Override 3666 public long getItemId(int position) { 3667 return position; 3668 } 3669 3670 @Override 3671 public View getView(int position, View convertView, ViewGroup parent) { 3672 TextView textView = (TextView) convertView; 3673 3674 if (textView == null) { 3675 textView = (TextView) mInflater.inflate(mTextView.mTextEditSuggestionItemLayout, 3676 parent, false); 3677 } 3678 3679 final SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 3680 textView.setText(suggestionInfo.mText); 3681 return textView; 3682 } 3683 } 3684 3685 @VisibleForTesting 3686 public ViewGroup getContentViewForTesting() { 3687 return mContentView; 3688 } 3689 3690 @Override 3691 public void show() { 3692 if (!(mTextView.getText() instanceof Editable)) return; 3693 if (extractedTextModeWillBeStarted()) { 3694 return; 3695 } 3696 3697 if (updateSuggestions()) { 3698 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 3699 mTextView.setCursorVisible(false); 3700 mIsShowingUp = true; 3701 super.show(); 3702 } 3703 3704 mSuggestionListView.setVisibility(mNumberOfSuggestions == 0 ? View.GONE : View.VISIBLE); 3705 } 3706 3707 @Override 3708 protected void measureContent() { 3709 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3710 final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec( 3711 displayMetrics.widthPixels, View.MeasureSpec.AT_MOST); 3712 final int verticalMeasure = View.MeasureSpec.makeMeasureSpec( 3713 displayMetrics.heightPixels, View.MeasureSpec.AT_MOST); 3714 3715 int width = 0; 3716 View view = null; 3717 for (int i = 0; i < mNumberOfSuggestions; i++) { 3718 view = mSuggestionsAdapter.getView(i, view, mContentView); 3719 view.getLayoutParams().width = LayoutParams.WRAP_CONTENT; 3720 view.measure(horizontalMeasure, verticalMeasure); 3721 width = Math.max(width, view.getMeasuredWidth()); 3722 } 3723 3724 if (mAddToDictionaryButton.getVisibility() != View.GONE) { 3725 mAddToDictionaryButton.measure(horizontalMeasure, verticalMeasure); 3726 width = Math.max(width, mAddToDictionaryButton.getMeasuredWidth()); 3727 } 3728 3729 mDeleteButton.measure(horizontalMeasure, verticalMeasure); 3730 width = Math.max(width, mDeleteButton.getMeasuredWidth()); 3731 3732 width += mContainerView.getPaddingLeft() + mContainerView.getPaddingRight() 3733 + mContainerMarginWidth; 3734 3735 // Enforce the width based on actual text widths 3736 mContentView.measure( 3737 View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY), 3738 verticalMeasure); 3739 3740 Drawable popupBackground = mPopupWindow.getBackground(); 3741 if (popupBackground != null) { 3742 if (mTempRect == null) mTempRect = new Rect(); 3743 popupBackground.getPadding(mTempRect); 3744 width += mTempRect.left + mTempRect.right; 3745 } 3746 mPopupWindow.setWidth(width); 3747 } 3748 3749 @Override 3750 protected int getTextOffset() { 3751 return (mTextView.getSelectionStart() + mTextView.getSelectionStart()) / 2; 3752 } 3753 3754 @Override 3755 protected int getVerticalLocalPosition(int line) { 3756 final Layout layout = mTextView.getLayout(); 3757 return layout.getLineBottomWithoutSpacing(line) - mContainerMarginTop; 3758 } 3759 3760 @Override 3761 protected int clipVertically(int positionY) { 3762 final int height = mContentView.getMeasuredHeight(); 3763 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3764 return Math.min(positionY, displayMetrics.heightPixels - height); 3765 } 3766 3767 private void hideWithCleanUp() { 3768 for (final SuggestionInfo info : mSuggestionInfos) { 3769 info.clear(); 3770 } 3771 mMisspelledSpanInfo.clear(); 3772 hide(); 3773 } 3774 3775 private boolean updateSuggestions() { 3776 Spannable spannable = (Spannable) mTextView.getText(); 3777 mNumberOfSuggestions = 3778 mSuggestionHelper.getSuggestionInfo(mSuggestionInfos, mMisspelledSpanInfo); 3779 if (mNumberOfSuggestions == 0 && mMisspelledSpanInfo.mSuggestionSpan == null) { 3780 return false; 3781 } 3782 3783 int spanUnionStart = mTextView.getText().length(); 3784 int spanUnionEnd = 0; 3785 3786 for (int i = 0; i < mNumberOfSuggestions; i++) { 3787 final SuggestionSpanInfo spanInfo = mSuggestionInfos[i].mSuggestionSpanInfo; 3788 spanUnionStart = Math.min(spanUnionStart, spanInfo.mSpanStart); 3789 spanUnionEnd = Math.max(spanUnionEnd, spanInfo.mSpanEnd); 3790 } 3791 if (mMisspelledSpanInfo.mSuggestionSpan != null) { 3792 spanUnionStart = Math.min(spanUnionStart, mMisspelledSpanInfo.mSpanStart); 3793 spanUnionEnd = Math.max(spanUnionEnd, mMisspelledSpanInfo.mSpanEnd); 3794 } 3795 3796 for (int i = 0; i < mNumberOfSuggestions; i++) { 3797 highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd); 3798 } 3799 3800 // Make "Add to dictionary" item visible if there is a span with the misspelled flag 3801 int addToDictionaryButtonVisibility = View.GONE; 3802 if (mMisspelledSpanInfo.mSuggestionSpan != null) { 3803 if (mMisspelledSpanInfo.mSpanStart >= 0 3804 && mMisspelledSpanInfo.mSpanEnd > mMisspelledSpanInfo.mSpanStart) { 3805 addToDictionaryButtonVisibility = View.VISIBLE; 3806 } 3807 } 3808 mAddToDictionaryButton.setVisibility(addToDictionaryButtonVisibility); 3809 3810 if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan(); 3811 final int underlineColor; 3812 if (mNumberOfSuggestions != 0) { 3813 underlineColor = 3814 mSuggestionInfos[0].mSuggestionSpanInfo.mSuggestionSpan.getUnderlineColor(); 3815 } else { 3816 underlineColor = mMisspelledSpanInfo.mSuggestionSpan.getUnderlineColor(); 3817 } 3818 3819 if (underlineColor == 0) { 3820 // Fallback on the default highlight color when the first span does not provide one 3821 mSuggestionRangeSpan.setBackgroundColor(mTextView.mHighlightColor); 3822 } else { 3823 final float BACKGROUND_TRANSPARENCY = 0.4f; 3824 final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY); 3825 mSuggestionRangeSpan.setBackgroundColor( 3826 (underlineColor & 0x00FFFFFF) + (newAlpha << 24)); 3827 } 3828 spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd, 3829 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 3830 3831 mSuggestionsAdapter.notifyDataSetChanged(); 3832 return true; 3833 } 3834 3835 private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart, 3836 int unionEnd) { 3837 final Spannable text = (Spannable) mTextView.getText(); 3838 final int spanStart = suggestionInfo.mSuggestionSpanInfo.mSpanStart; 3839 final int spanEnd = suggestionInfo.mSuggestionSpanInfo.mSpanEnd; 3840 3841 // Adjust the start/end of the suggestion span 3842 suggestionInfo.mSuggestionStart = spanStart - unionStart; 3843 suggestionInfo.mSuggestionEnd = suggestionInfo.mSuggestionStart 3844 + suggestionInfo.mText.length(); 3845 3846 suggestionInfo.mText.setSpan(mHighlightSpan, 0, suggestionInfo.mText.length(), 3847 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 3848 3849 // Add the text before and after the span. 3850 final String textAsString = text.toString(); 3851 suggestionInfo.mText.insert(0, textAsString.substring(unionStart, spanStart)); 3852 suggestionInfo.mText.append(textAsString.substring(spanEnd, unionEnd)); 3853 } 3854 3855 @Override 3856 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 3857 SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 3858 replaceWithSuggestion(suggestionInfo); 3859 hideWithCleanUp(); 3860 } 3861 } 3862 3863 /** 3864 * An ActionMode Callback class that is used to provide actions while in text insertion or 3865 * selection mode. 3866 * 3867 * The default callback provides a subset of Select All, Cut, Copy, Paste, Share and Replace 3868 * actions, depending on which of these this TextView supports and the current selection. 3869 */ 3870 private class TextActionModeCallback extends ActionMode.Callback2 { 3871 private final Path mSelectionPath = new Path(); 3872 private final RectF mSelectionBounds = new RectF(); 3873 private final boolean mHasSelection; 3874 private final int mHandleHeight; 3875 private final Map<MenuItem, OnClickListener> mAssistClickHandlers = new HashMap<>(); 3876 3877 TextActionModeCallback(@TextActionMode int mode) { 3878 mHasSelection = mode == TextActionMode.SELECTION 3879 || (mTextIsSelectable && mode == TextActionMode.TEXT_LINK); 3880 if (mHasSelection) { 3881 SelectionModifierCursorController selectionController = getSelectionController(); 3882 if (selectionController.mStartHandle == null) { 3883 // As these are for initializing selectionController, hide() must be called. 3884 selectionController.initDrawables(); 3885 selectionController.initHandles(); 3886 selectionController.hide(); 3887 } 3888 mHandleHeight = Math.max( 3889 mSelectHandleLeft.getMinimumHeight(), 3890 mSelectHandleRight.getMinimumHeight()); 3891 } else { 3892 InsertionPointCursorController insertionController = getInsertionController(); 3893 if (insertionController != null) { 3894 insertionController.getHandle(); 3895 mHandleHeight = mSelectHandleCenter.getMinimumHeight(); 3896 } else { 3897 mHandleHeight = 0; 3898 } 3899 } 3900 } 3901 3902 @Override 3903 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 3904 mAssistClickHandlers.clear(); 3905 3906 mode.setTitle(null); 3907 mode.setSubtitle(null); 3908 mode.setTitleOptionalHint(true); 3909 populateMenuWithItems(menu); 3910 3911 Callback customCallback = getCustomCallback(); 3912 if (customCallback != null) { 3913 if (!customCallback.onCreateActionMode(mode, menu)) { 3914 // The custom mode can choose to cancel the action mode, dismiss selection. 3915 Selection.setSelection((Spannable) mTextView.getText(), 3916 mTextView.getSelectionEnd()); 3917 return false; 3918 } 3919 } 3920 3921 if (mTextView.canProcessText()) { 3922 mProcessTextIntentActionsHandler.onInitializeMenu(menu); 3923 } 3924 3925 if (mHasSelection && !mTextView.hasTransientState()) { 3926 mTextView.setHasTransientState(true); 3927 } 3928 return true; 3929 } 3930 3931 private Callback getCustomCallback() { 3932 return mHasSelection 3933 ? mCustomSelectionActionModeCallback 3934 : mCustomInsertionActionModeCallback; 3935 } 3936 3937 private void populateMenuWithItems(Menu menu) { 3938 if (mTextView.canCut()) { 3939 menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, 3940 com.android.internal.R.string.cut) 3941 .setAlphabeticShortcut('x') 3942 .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3943 } 3944 3945 if (mTextView.canCopy()) { 3946 menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, 3947 com.android.internal.R.string.copy) 3948 .setAlphabeticShortcut('c') 3949 .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3950 } 3951 3952 if (mTextView.canPaste()) { 3953 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, 3954 com.android.internal.R.string.paste) 3955 .setAlphabeticShortcut('v') 3956 .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3957 } 3958 3959 if (mTextView.canShare()) { 3960 menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, 3961 com.android.internal.R.string.share) 3962 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3963 } 3964 3965 if (mTextView.canRequestAutofill()) { 3966 final String selected = mTextView.getSelectedText(); 3967 if (selected == null || selected.isEmpty()) { 3968 menu.add(Menu.NONE, TextView.ID_AUTOFILL, MENU_ITEM_ORDER_AUTOFILL, 3969 com.android.internal.R.string.autofill) 3970 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 3971 } 3972 } 3973 3974 if (mTextView.canPasteAsPlainText()) { 3975 menu.add( 3976 Menu.NONE, 3977 TextView.ID_PASTE_AS_PLAIN_TEXT, 3978 MENU_ITEM_ORDER_PASTE_AS_PLAIN_TEXT, 3979 com.android.internal.R.string.paste_as_plain_text) 3980 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3981 } 3982 3983 updateSelectAllItem(menu); 3984 updateReplaceItem(menu); 3985 updateAssistMenuItems(menu); 3986 } 3987 3988 @Override 3989 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 3990 updateSelectAllItem(menu); 3991 updateReplaceItem(menu); 3992 updateAssistMenuItems(menu); 3993 3994 Callback customCallback = getCustomCallback(); 3995 if (customCallback != null) { 3996 return customCallback.onPrepareActionMode(mode, menu); 3997 } 3998 return true; 3999 } 4000 4001 private void updateSelectAllItem(Menu menu) { 4002 boolean canSelectAll = mTextView.canSelectAllText(); 4003 boolean selectAllItemExists = menu.findItem(TextView.ID_SELECT_ALL) != null; 4004 if (canSelectAll && !selectAllItemExists) { 4005 menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, 4006 com.android.internal.R.string.selectAll) 4007 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 4008 } else if (!canSelectAll && selectAllItemExists) { 4009 menu.removeItem(TextView.ID_SELECT_ALL); 4010 } 4011 } 4012 4013 private void updateReplaceItem(Menu menu) { 4014 boolean canReplace = mTextView.isSuggestionsEnabled() && shouldOfferToShowSuggestions(); 4015 boolean replaceItemExists = menu.findItem(TextView.ID_REPLACE) != null; 4016 if (canReplace && !replaceItemExists) { 4017 menu.add(Menu.NONE, TextView.ID_REPLACE, MENU_ITEM_ORDER_REPLACE, 4018 com.android.internal.R.string.replace) 4019 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 4020 } else if (!canReplace && replaceItemExists) { 4021 menu.removeItem(TextView.ID_REPLACE); 4022 } 4023 } 4024 4025 private void updateAssistMenuItems(Menu menu) { 4026 clearAssistMenuItems(menu); 4027 if (!mTextView.isDeviceProvisioned()) { 4028 return; 4029 } 4030 final TextClassification textClassification = 4031 getSelectionActionModeHelper().getTextClassification(); 4032 if (textClassification == null) { 4033 return; 4034 } 4035 final OnClickListener onClick = getSupportedOnClickListener( 4036 textClassification.getIcon(), 4037 textClassification.getLabel(), 4038 textClassification.getIntent()); 4039 if (onClick != null) { 4040 final MenuItem item = menu.add( 4041 TextView.ID_ASSIST, TextView.ID_ASSIST, MENU_ITEM_ORDER_ASSIST, 4042 textClassification.getLabel()) 4043 .setIcon(textClassification.getIcon()) 4044 .setIntent(textClassification.getIntent()); 4045 item.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 4046 mAssistClickHandlers.put( 4047 item, TextClassification.createIntentOnClickListener( 4048 mTextView.getContext(), textClassification.getIntent())); 4049 } 4050 final int count = textClassification.getSecondaryActionsCount(); 4051 for (int i = 0; i < count; i++) { 4052 final OnClickListener onClick1 = getSupportedOnClickListener( 4053 textClassification.getSecondaryIcon(i), 4054 textClassification.getSecondaryLabel(i), 4055 textClassification.getSecondaryIntent(i)); 4056 if (onClick1 == null) { 4057 continue; 4058 } 4059 final int order = MENU_ITEM_ORDER_SECONDARY_ASSIST_ACTIONS_START + i; 4060 final MenuItem item = menu.add( 4061 TextView.ID_ASSIST, Menu.NONE, order, 4062 textClassification.getSecondaryLabel(i)) 4063 .setIcon(textClassification.getSecondaryIcon(i)) 4064 .setIntent(textClassification.getSecondaryIntent(i)); 4065 item.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 4066 mAssistClickHandlers.put(item, 4067 TextClassification.createIntentOnClickListener( 4068 mTextView.getContext(), textClassification.getSecondaryIntent(i))); 4069 } 4070 } 4071 4072 private void clearAssistMenuItems(Menu menu) { 4073 int i = 0; 4074 while (i < menu.size()) { 4075 final MenuItem menuItem = menu.getItem(i); 4076 if (menuItem.getGroupId() == TextView.ID_ASSIST) { 4077 menu.removeItem(menuItem.getItemId()); 4078 continue; 4079 } 4080 i++; 4081 } 4082 } 4083 4084 @Nullable 4085 private OnClickListener getSupportedOnClickListener( 4086 Drawable icon, CharSequence label, Intent intent) { 4087 final boolean hasUi = icon != null || !TextUtils.isEmpty(label); 4088 if (hasUi) { 4089 return TextClassification.createIntentOnClickListener( 4090 mTextView.getContext(), intent); 4091 } 4092 return null; 4093 } 4094 4095 private boolean onAssistMenuItemClicked(MenuItem assistMenuItem) { 4096 Preconditions.checkArgument(assistMenuItem.getGroupId() == TextView.ID_ASSIST); 4097 4098 final TextClassification textClassification = 4099 getSelectionActionModeHelper().getTextClassification(); 4100 if (!mTextView.isDeviceProvisioned() || textClassification == null) { 4101 // No textClassification result to handle the click. Eat the click. 4102 return true; 4103 } 4104 4105 OnClickListener onClickListener = mAssistClickHandlers.get(assistMenuItem); 4106 if (onClickListener == null) { 4107 final Intent intent = assistMenuItem.getIntent(); 4108 if (intent != null) { 4109 onClickListener = TextClassification.createIntentOnClickListener( 4110 mTextView.getContext(), intent); 4111 } 4112 } 4113 if (onClickListener != null) { 4114 onClickListener.onClick(mTextView); 4115 stopTextActionMode(); 4116 } 4117 // We tried our best. 4118 return true; 4119 } 4120 4121 @Override 4122 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 4123 getSelectionActionModeHelper().onSelectionAction(item.getItemId()); 4124 4125 if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { 4126 return true; 4127 } 4128 Callback customCallback = getCustomCallback(); 4129 if (customCallback != null && customCallback.onActionItemClicked(mode, item)) { 4130 return true; 4131 } 4132 if (item.getGroupId() == TextView.ID_ASSIST && onAssistMenuItemClicked(item)) { 4133 return true; 4134 } 4135 return mTextView.onTextContextMenuItem(item.getItemId()); 4136 } 4137 4138 @Override 4139 public void onDestroyActionMode(ActionMode mode) { 4140 // Clear mTextActionMode not to recursively destroy action mode by clearing selection. 4141 getSelectionActionModeHelper().onDestroyActionMode(); 4142 mTextActionMode = null; 4143 Callback customCallback = getCustomCallback(); 4144 if (customCallback != null) { 4145 customCallback.onDestroyActionMode(mode); 4146 } 4147 4148 if (!mPreserveSelection) { 4149 /* 4150 * Leave current selection when we tentatively destroy action mode for the 4151 * selection. If we're detaching from a window, we'll bring back the selection 4152 * mode when (if) we get reattached. 4153 */ 4154 Selection.setSelection((Spannable) mTextView.getText(), 4155 mTextView.getSelectionEnd()); 4156 } 4157 4158 if (mSelectionModifierCursorController != null) { 4159 mSelectionModifierCursorController.hide(); 4160 } 4161 4162 mAssistClickHandlers.clear(); 4163 } 4164 4165 @Override 4166 public void onGetContentRect(ActionMode mode, View view, Rect outRect) { 4167 if (!view.equals(mTextView) || mTextView.getLayout() == null) { 4168 super.onGetContentRect(mode, view, outRect); 4169 return; 4170 } 4171 if (mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 4172 // We have a selection. 4173 mSelectionPath.reset(); 4174 mTextView.getLayout().getSelectionPath( 4175 mTextView.getSelectionStart(), mTextView.getSelectionEnd(), mSelectionPath); 4176 mSelectionPath.computeBounds(mSelectionBounds, true); 4177 mSelectionBounds.bottom += mHandleHeight; 4178 } else { 4179 // We have a cursor. 4180 Layout layout = mTextView.getLayout(); 4181 int line = layout.getLineForOffset(mTextView.getSelectionStart()); 4182 float primaryHorizontal = clampHorizontalPosition(null, 4183 layout.getPrimaryHorizontal(mTextView.getSelectionStart())); 4184 mSelectionBounds.set( 4185 primaryHorizontal, 4186 layout.getLineTop(line), 4187 primaryHorizontal, 4188 layout.getLineBottom(line) + mHandleHeight); 4189 } 4190 // Take TextView's padding and scroll into account. 4191 int textHorizontalOffset = mTextView.viewportToContentHorizontalOffset(); 4192 int textVerticalOffset = mTextView.viewportToContentVerticalOffset(); 4193 outRect.set( 4194 (int) Math.floor(mSelectionBounds.left + textHorizontalOffset), 4195 (int) Math.floor(mSelectionBounds.top + textVerticalOffset), 4196 (int) Math.ceil(mSelectionBounds.right + textHorizontalOffset), 4197 (int) Math.ceil(mSelectionBounds.bottom + textVerticalOffset)); 4198 } 4199 } 4200 4201 /** 4202 * A listener to call {@link InputMethodManager#updateCursorAnchorInfo(View, CursorAnchorInfo)} 4203 * while the input method is requesting the cursor/anchor position. Does nothing as long as 4204 * {@link InputMethodManager#isWatchingCursor(View)} returns false. 4205 */ 4206 private final class CursorAnchorInfoNotifier implements TextViewPositionListener { 4207 final CursorAnchorInfo.Builder mSelectionInfoBuilder = new CursorAnchorInfo.Builder(); 4208 final int[] mTmpIntOffset = new int[2]; 4209 final Matrix mViewToScreenMatrix = new Matrix(); 4210 4211 @Override 4212 public void updatePosition(int parentPositionX, int parentPositionY, 4213 boolean parentPositionChanged, boolean parentScrolled) { 4214 final InputMethodState ims = mInputMethodState; 4215 if (ims == null || ims.mBatchEditNesting > 0) { 4216 return; 4217 } 4218 final InputMethodManager imm = InputMethodManager.peekInstance(); 4219 if (null == imm) { 4220 return; 4221 } 4222 if (!imm.isActive(mTextView)) { 4223 return; 4224 } 4225 // Skip if the IME has not requested the cursor/anchor position. 4226 if (!imm.isCursorAnchorInfoEnabled()) { 4227 return; 4228 } 4229 Layout layout = mTextView.getLayout(); 4230 if (layout == null) { 4231 return; 4232 } 4233 4234 final CursorAnchorInfo.Builder builder = mSelectionInfoBuilder; 4235 builder.reset(); 4236 4237 final int selectionStart = mTextView.getSelectionStart(); 4238 builder.setSelectionRange(selectionStart, mTextView.getSelectionEnd()); 4239 4240 // Construct transformation matrix from view local coordinates to screen coordinates. 4241 mViewToScreenMatrix.set(mTextView.getMatrix()); 4242 mTextView.getLocationOnScreen(mTmpIntOffset); 4243 mViewToScreenMatrix.postTranslate(mTmpIntOffset[0], mTmpIntOffset[1]); 4244 builder.setMatrix(mViewToScreenMatrix); 4245 4246 final float viewportToContentHorizontalOffset = 4247 mTextView.viewportToContentHorizontalOffset(); 4248 final float viewportToContentVerticalOffset = 4249 mTextView.viewportToContentVerticalOffset(); 4250 4251 final CharSequence text = mTextView.getText(); 4252 if (text instanceof Spannable) { 4253 final Spannable sp = (Spannable) text; 4254 int composingTextStart = EditableInputConnection.getComposingSpanStart(sp); 4255 int composingTextEnd = EditableInputConnection.getComposingSpanEnd(sp); 4256 if (composingTextEnd < composingTextStart) { 4257 final int temp = composingTextEnd; 4258 composingTextEnd = composingTextStart; 4259 composingTextStart = temp; 4260 } 4261 final boolean hasComposingText = 4262 (0 <= composingTextStart) && (composingTextStart < composingTextEnd); 4263 if (hasComposingText) { 4264 final CharSequence composingText = text.subSequence(composingTextStart, 4265 composingTextEnd); 4266 builder.setComposingText(composingTextStart, composingText); 4267 mTextView.populateCharacterBounds(builder, composingTextStart, 4268 composingTextEnd, viewportToContentHorizontalOffset, 4269 viewportToContentVerticalOffset); 4270 } 4271 } 4272 4273 // Treat selectionStart as the insertion point. 4274 if (0 <= selectionStart) { 4275 final int offset = selectionStart; 4276 final int line = layout.getLineForOffset(offset); 4277 final float insertionMarkerX = layout.getPrimaryHorizontal(offset) 4278 + viewportToContentHorizontalOffset; 4279 final float insertionMarkerTop = layout.getLineTop(line) 4280 + viewportToContentVerticalOffset; 4281 final float insertionMarkerBaseline = layout.getLineBaseline(line) 4282 + viewportToContentVerticalOffset; 4283 final float insertionMarkerBottom = layout.getLineBottomWithoutSpacing(line) 4284 + viewportToContentVerticalOffset; 4285 final boolean isTopVisible = mTextView 4286 .isPositionVisible(insertionMarkerX, insertionMarkerTop); 4287 final boolean isBottomVisible = mTextView 4288 .isPositionVisible(insertionMarkerX, insertionMarkerBottom); 4289 int insertionMarkerFlags = 0; 4290 if (isTopVisible || isBottomVisible) { 4291 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; 4292 } 4293 if (!isTopVisible || !isBottomVisible) { 4294 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; 4295 } 4296 if (layout.isRtlCharAt(offset)) { 4297 insertionMarkerFlags |= CursorAnchorInfo.FLAG_IS_RTL; 4298 } 4299 builder.setInsertionMarkerLocation(insertionMarkerX, insertionMarkerTop, 4300 insertionMarkerBaseline, insertionMarkerBottom, insertionMarkerFlags); 4301 } 4302 4303 imm.updateCursorAnchorInfo(mTextView, builder.build()); 4304 } 4305 } 4306 4307 @VisibleForTesting 4308 public abstract class HandleView extends View implements TextViewPositionListener { 4309 protected Drawable mDrawable; 4310 protected Drawable mDrawableLtr; 4311 protected Drawable mDrawableRtl; 4312 private final PopupWindow mContainer; 4313 // Position with respect to the parent TextView 4314 private int mPositionX, mPositionY; 4315 private boolean mIsDragging; 4316 // Offset from touch position to mPosition 4317 private float mTouchToWindowOffsetX, mTouchToWindowOffsetY; 4318 protected int mHotspotX; 4319 protected int mHorizontalGravity; 4320 // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up 4321 private float mTouchOffsetY; 4322 // Where the touch position should be on the handle to ensure a maximum cursor visibility 4323 private float mIdealVerticalOffset; 4324 // Parent's (TextView) previous position in window 4325 private int mLastParentX, mLastParentY; 4326 // Parent's (TextView) previous position on screen 4327 private int mLastParentXOnScreen, mLastParentYOnScreen; 4328 // Previous text character offset 4329 protected int mPreviousOffset = -1; 4330 // Previous text character offset 4331 private boolean mPositionHasChanged = true; 4332 // Minimum touch target size for handles 4333 private int mMinSize; 4334 // Indicates the line of text that the handle is on. 4335 protected int mPrevLine = UNSET_LINE; 4336 // Indicates the line of text that the user was touching. This can differ from mPrevLine 4337 // when selecting text when the handles jump to the end / start of words which may be on 4338 // a different line. 4339 protected int mPreviousLineTouched = UNSET_LINE; 4340 4341 private HandleView(Drawable drawableLtr, Drawable drawableRtl, final int id) { 4342 super(mTextView.getContext()); 4343 setId(id); 4344 mContainer = new PopupWindow(mTextView.getContext(), null, 4345 com.android.internal.R.attr.textSelectHandleWindowStyle); 4346 mContainer.setSplitTouchEnabled(true); 4347 mContainer.setClippingEnabled(false); 4348 mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 4349 mContainer.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 4350 mContainer.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 4351 mContainer.setContentView(this); 4352 4353 mDrawableLtr = drawableLtr; 4354 mDrawableRtl = drawableRtl; 4355 mMinSize = mTextView.getContext().getResources().getDimensionPixelSize( 4356 com.android.internal.R.dimen.text_handle_min_size); 4357 4358 updateDrawable(); 4359 4360 final int handleHeight = getPreferredHeight(); 4361 mTouchOffsetY = -0.3f * handleHeight; 4362 mIdealVerticalOffset = 0.7f * handleHeight; 4363 } 4364 4365 public float getIdealVerticalOffset() { 4366 return mIdealVerticalOffset; 4367 } 4368 4369 protected void updateDrawable() { 4370 if (mIsDragging) { 4371 // Don't update drawable during dragging. 4372 return; 4373 } 4374 final Layout layout = mTextView.getLayout(); 4375 if (layout == null) { 4376 return; 4377 } 4378 final int offset = getCurrentCursorOffset(); 4379 final boolean isRtlCharAtOffset = isAtRtlRun(layout, offset); 4380 final Drawable oldDrawable = mDrawable; 4381 mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr; 4382 mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset); 4383 mHorizontalGravity = getHorizontalGravity(isRtlCharAtOffset); 4384 if (oldDrawable != mDrawable && isShowing()) { 4385 // Update popup window position. 4386 mPositionX = getCursorHorizontalPosition(layout, offset) - mHotspotX 4387 - getHorizontalOffset() + getCursorOffset(); 4388 mPositionX += mTextView.viewportToContentHorizontalOffset(); 4389 mPositionHasChanged = true; 4390 updatePosition(mLastParentX, mLastParentY, false, false); 4391 postInvalidate(); 4392 } 4393 } 4394 4395 protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun); 4396 protected abstract int getHorizontalGravity(boolean isRtlRun); 4397 4398 // Touch-up filter: number of previous positions remembered 4399 private static final int HISTORY_SIZE = 5; 4400 private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150; 4401 private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350; 4402 private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; 4403 private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; 4404 private int mPreviousOffsetIndex = 0; 4405 private int mNumberPreviousOffsets = 0; 4406 4407 private void startTouchUpFilter(int offset) { 4408 mNumberPreviousOffsets = 0; 4409 addPositionToTouchUpFilter(offset); 4410 } 4411 4412 private void addPositionToTouchUpFilter(int offset) { 4413 mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; 4414 mPreviousOffsets[mPreviousOffsetIndex] = offset; 4415 mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); 4416 mNumberPreviousOffsets++; 4417 } 4418 4419 private void filterOnTouchUp(boolean fromTouchScreen) { 4420 final long now = SystemClock.uptimeMillis(); 4421 int i = 0; 4422 int index = mPreviousOffsetIndex; 4423 final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); 4424 while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) { 4425 i++; 4426 index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; 4427 } 4428 4429 if (i > 0 && i < iMax 4430 && (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) { 4431 positionAtCursorOffset(mPreviousOffsets[index], false, fromTouchScreen); 4432 } 4433 } 4434 4435 public boolean offsetHasBeenChanged() { 4436 return mNumberPreviousOffsets > 1; 4437 } 4438 4439 @Override 4440 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4441 setMeasuredDimension(getPreferredWidth(), getPreferredHeight()); 4442 } 4443 4444 @Override 4445 public void invalidate() { 4446 super.invalidate(); 4447 if (isShowing()) { 4448 positionAtCursorOffset(getCurrentCursorOffset(), true, false); 4449 } 4450 }; 4451 4452 private int getPreferredWidth() { 4453 return Math.max(mDrawable.getIntrinsicWidth(), mMinSize); 4454 } 4455 4456 private int getPreferredHeight() { 4457 return Math.max(mDrawable.getIntrinsicHeight(), mMinSize); 4458 } 4459 4460 public void show() { 4461 if (isShowing()) return; 4462 4463 getPositionListener().addSubscriber(this, true /* local position may change */); 4464 4465 // Make sure the offset is always considered new, even when focusing at same position 4466 mPreviousOffset = -1; 4467 positionAtCursorOffset(getCurrentCursorOffset(), false, false); 4468 } 4469 4470 protected void dismiss() { 4471 mIsDragging = false; 4472 mContainer.dismiss(); 4473 onDetached(); 4474 } 4475 4476 public void hide() { 4477 dismiss(); 4478 4479 getPositionListener().removeSubscriber(this); 4480 } 4481 4482 public boolean isShowing() { 4483 return mContainer.isShowing(); 4484 } 4485 4486 private boolean isVisible() { 4487 // Always show a dragging handle. 4488 if (mIsDragging) { 4489 return true; 4490 } 4491 4492 if (mTextView.isInBatchEditMode()) { 4493 return false; 4494 } 4495 4496 return mTextView.isPositionVisible( 4497 mPositionX + mHotspotX + getHorizontalOffset(), mPositionY); 4498 } 4499 4500 public abstract int getCurrentCursorOffset(); 4501 4502 protected abstract void updateSelection(int offset); 4503 4504 protected abstract void updatePosition(float x, float y, boolean fromTouchScreen); 4505 4506 @MagnifierHandleTrigger 4507 protected abstract int getMagnifierHandleTrigger(); 4508 4509 protected boolean isAtRtlRun(@NonNull Layout layout, int offset) { 4510 return layout.isRtlCharAt(offset); 4511 } 4512 4513 @VisibleForTesting 4514 public float getHorizontal(@NonNull Layout layout, int offset) { 4515 return layout.getPrimaryHorizontal(offset); 4516 } 4517 4518 protected int getOffsetAtCoordinate(@NonNull Layout layout, int line, float x) { 4519 return mTextView.getOffsetAtCoordinate(line, x); 4520 } 4521 4522 /** 4523 * @param offset Cursor offset. Must be in [-1, length]. 4524 * @param forceUpdatePosition whether to force update the position. This should be true 4525 * when If the parent has been scrolled, for example. 4526 * @param fromTouchScreen {@code true} if the cursor is moved with motion events from the 4527 * touch screen. 4528 */ 4529 protected void positionAtCursorOffset(int offset, boolean forceUpdatePosition, 4530 boolean fromTouchScreen) { 4531 // A HandleView relies on the layout, which may be nulled by external methods 4532 Layout layout = mTextView.getLayout(); 4533 if (layout == null) { 4534 // Will update controllers' state, hiding them and stopping selection mode if needed 4535 prepareCursorControllers(); 4536 return; 4537 } 4538 layout = mTextView.getLayout(); 4539 4540 boolean offsetChanged = offset != mPreviousOffset; 4541 if (offsetChanged || forceUpdatePosition) { 4542 if (offsetChanged) { 4543 updateSelection(offset); 4544 if (fromTouchScreen && mHapticTextHandleEnabled) { 4545 mTextView.performHapticFeedback(HapticFeedbackConstants.TEXT_HANDLE_MOVE); 4546 } 4547 addPositionToTouchUpFilter(offset); 4548 } 4549 final int line = layout.getLineForOffset(offset); 4550 mPrevLine = line; 4551 4552 mPositionX = getCursorHorizontalPosition(layout, offset) - mHotspotX 4553 - getHorizontalOffset() + getCursorOffset(); 4554 mPositionY = layout.getLineBottomWithoutSpacing(line); 4555 4556 // Take TextView's padding and scroll into account. 4557 mPositionX += mTextView.viewportToContentHorizontalOffset(); 4558 mPositionY += mTextView.viewportToContentVerticalOffset(); 4559 4560 mPreviousOffset = offset; 4561 mPositionHasChanged = true; 4562 } 4563 } 4564 4565 /** 4566 * Return the clamped horizontal position for the cursor. 4567 * 4568 * @param layout Text layout. 4569 * @param offset Character offset for the cursor. 4570 * @return The clamped horizontal position for the cursor. 4571 */ 4572 int getCursorHorizontalPosition(Layout layout, int offset) { 4573 return (int) (getHorizontal(layout, offset) - 0.5f); 4574 } 4575 4576 @Override 4577 public void updatePosition(int parentPositionX, int parentPositionY, 4578 boolean parentPositionChanged, boolean parentScrolled) { 4579 positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled, false); 4580 if (parentPositionChanged || mPositionHasChanged) { 4581 if (mIsDragging) { 4582 // Update touchToWindow offset in case of parent scrolling while dragging 4583 if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) { 4584 mTouchToWindowOffsetX += parentPositionX - mLastParentX; 4585 mTouchToWindowOffsetY += parentPositionY - mLastParentY; 4586 mLastParentX = parentPositionX; 4587 mLastParentY = parentPositionY; 4588 } 4589 4590 onHandleMoved(); 4591 } 4592 4593 if (isVisible()) { 4594 // Transform to the window coordinates to follow the view tranformation. 4595 final int[] pts = { mPositionX + mHotspotX + getHorizontalOffset(), mPositionY}; 4596 mTextView.transformFromViewToWindowSpace(pts); 4597 pts[0] -= mHotspotX + getHorizontalOffset(); 4598 4599 if (isShowing()) { 4600 mContainer.update(pts[0], pts[1], -1, -1); 4601 } else { 4602 mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, pts[0], pts[1]); 4603 } 4604 } else { 4605 if (isShowing()) { 4606 dismiss(); 4607 } 4608 } 4609 4610 mPositionHasChanged = false; 4611 } 4612 } 4613 4614 @Override 4615 protected void onDraw(Canvas c) { 4616 final int drawWidth = mDrawable.getIntrinsicWidth(); 4617 final int left = getHorizontalOffset(); 4618 4619 mDrawable.setBounds(left, 0, left + drawWidth, mDrawable.getIntrinsicHeight()); 4620 mDrawable.draw(c); 4621 } 4622 4623 private int getHorizontalOffset() { 4624 final int width = getPreferredWidth(); 4625 final int drawWidth = mDrawable.getIntrinsicWidth(); 4626 final int left; 4627 switch (mHorizontalGravity) { 4628 case Gravity.LEFT: 4629 left = 0; 4630 break; 4631 default: 4632 case Gravity.CENTER: 4633 left = (width - drawWidth) / 2; 4634 break; 4635 case Gravity.RIGHT: 4636 left = width - drawWidth; 4637 break; 4638 } 4639 return left; 4640 } 4641 4642 protected int getCursorOffset() { 4643 return 0; 4644 } 4645 4646 protected final void showMagnifier(@NonNull final MotionEvent event) { 4647 if (mMagnifier == null) { 4648 return; 4649 } 4650 4651 final int trigger = getMagnifierHandleTrigger(); 4652 final int offset; 4653 switch (trigger) { 4654 case MagnifierHandleTrigger.INSERTION: // Fall through. 4655 case MagnifierHandleTrigger.SELECTION_START: 4656 offset = mTextView.getSelectionStart(); 4657 break; 4658 case MagnifierHandleTrigger.SELECTION_END: 4659 offset = mTextView.getSelectionEnd(); 4660 break; 4661 default: 4662 offset = -1; 4663 break; 4664 } 4665 4666 if (offset == -1) { 4667 dismissMagnifier(); 4668 } 4669 4670 final Layout layout = mTextView.getLayout(); 4671 final int lineNumber = layout.getLineForOffset(offset); 4672 // Horizontally move the magnifier smoothly. 4673 final int[] textViewLocationOnScreen = new int[2]; 4674 mTextView.getLocationOnScreen(textViewLocationOnScreen); 4675 final float xPosInView = event.getRawX() - textViewLocationOnScreen[0]; 4676 // Vertically snap to middle of current line. 4677 final float yPosInView = (mTextView.getLayout().getLineTop(lineNumber) 4678 + mTextView.getLayout().getLineBottom(lineNumber)) / 2.0f 4679 + mTextView.getTotalPaddingTop() - mTextView.getScrollY(); 4680 4681 // Make the cursor visible and stop blinking. 4682 mRenderCursorRegardlessTiming = true; 4683 mTextView.invalidateCursorPath(); 4684 suspendBlink(); 4685 4686 mMagnifier.show(xPosInView, yPosInView); 4687 } 4688 4689 protected final void dismissMagnifier() { 4690 if (mMagnifier != null) { 4691 mMagnifier.dismiss(); 4692 mRenderCursorRegardlessTiming = false; 4693 resumeBlink(); 4694 } 4695 } 4696 4697 @Override 4698 public boolean onTouchEvent(MotionEvent ev) { 4699 updateFloatingToolbarVisibility(ev); 4700 4701 switch (ev.getActionMasked()) { 4702 case MotionEvent.ACTION_DOWN: { 4703 startTouchUpFilter(getCurrentCursorOffset()); 4704 4705 final PositionListener positionListener = getPositionListener(); 4706 mLastParentX = positionListener.getPositionX(); 4707 mLastParentY = positionListener.getPositionY(); 4708 mLastParentXOnScreen = positionListener.getPositionXOnScreen(); 4709 mLastParentYOnScreen = positionListener.getPositionYOnScreen(); 4710 4711 final float xInWindow = ev.getRawX() - mLastParentXOnScreen + mLastParentX; 4712 final float yInWindow = ev.getRawY() - mLastParentYOnScreen + mLastParentY; 4713 mTouchToWindowOffsetX = xInWindow - mPositionX; 4714 mTouchToWindowOffsetY = yInWindow - mPositionY; 4715 4716 mIsDragging = true; 4717 mPreviousLineTouched = UNSET_LINE; 4718 break; 4719 } 4720 4721 case MotionEvent.ACTION_MOVE: { 4722 final float xInWindow = ev.getRawX() - mLastParentXOnScreen + mLastParentX; 4723 final float yInWindow = ev.getRawY() - mLastParentYOnScreen + mLastParentY; 4724 4725 // Vertical hysteresis: vertical down movement tends to snap to ideal offset 4726 final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY; 4727 final float currentVerticalOffset = yInWindow - mPositionY - mLastParentY; 4728 float newVerticalOffset; 4729 if (previousVerticalOffset < mIdealVerticalOffset) { 4730 newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset); 4731 newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset); 4732 } else { 4733 newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset); 4734 newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset); 4735 } 4736 mTouchToWindowOffsetY = newVerticalOffset + mLastParentY; 4737 4738 final float newPosX = 4739 xInWindow - mTouchToWindowOffsetX + mHotspotX + getHorizontalOffset(); 4740 final float newPosY = yInWindow - mTouchToWindowOffsetY + mTouchOffsetY; 4741 4742 updatePosition(newPosX, newPosY, 4743 ev.isFromSource(InputDevice.SOURCE_TOUCHSCREEN)); 4744 break; 4745 } 4746 4747 case MotionEvent.ACTION_UP: 4748 filterOnTouchUp(ev.isFromSource(InputDevice.SOURCE_TOUCHSCREEN)); 4749 // Fall through. 4750 case MotionEvent.ACTION_CANCEL: 4751 mIsDragging = false; 4752 updateDrawable(); 4753 break; 4754 } 4755 return true; 4756 } 4757 4758 public boolean isDragging() { 4759 return mIsDragging; 4760 } 4761 4762 void onHandleMoved() {} 4763 4764 public void onDetached() {} 4765 } 4766 4767 private class InsertionHandleView extends HandleView { 4768 private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000; 4769 private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds 4770 4771 // Used to detect taps on the insertion handle, which will affect the insertion action mode 4772 private float mDownPositionX, mDownPositionY; 4773 private Runnable mHider; 4774 4775 public InsertionHandleView(Drawable drawable) { 4776 super(drawable, drawable, com.android.internal.R.id.insertion_handle); 4777 } 4778 4779 @Override 4780 public void show() { 4781 super.show(); 4782 4783 final long durationSinceCutOrCopy = 4784 SystemClock.uptimeMillis() - TextView.sLastCutCopyOrTextChangedTime; 4785 4786 // Cancel the single tap delayed runnable. 4787 if (mInsertionActionModeRunnable != null 4788 && ((mTapState == TAP_STATE_DOUBLE_TAP) 4789 || (mTapState == TAP_STATE_TRIPLE_CLICK) 4790 || isCursorInsideEasyCorrectionSpan())) { 4791 mTextView.removeCallbacks(mInsertionActionModeRunnable); 4792 } 4793 4794 // Prepare and schedule the single tap runnable to run exactly after the double tap 4795 // timeout has passed. 4796 if ((mTapState != TAP_STATE_DOUBLE_TAP) && (mTapState != TAP_STATE_TRIPLE_CLICK) 4797 && !isCursorInsideEasyCorrectionSpan() 4798 && (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION)) { 4799 if (mTextActionMode == null) { 4800 if (mInsertionActionModeRunnable == null) { 4801 mInsertionActionModeRunnable = new Runnable() { 4802 @Override 4803 public void run() { 4804 startInsertionActionMode(); 4805 } 4806 }; 4807 } 4808 mTextView.postDelayed( 4809 mInsertionActionModeRunnable, 4810 ViewConfiguration.getDoubleTapTimeout() + 1); 4811 } 4812 4813 } 4814 4815 hideAfterDelay(); 4816 } 4817 4818 private void hideAfterDelay() { 4819 if (mHider == null) { 4820 mHider = new Runnable() { 4821 public void run() { 4822 hide(); 4823 } 4824 }; 4825 } else { 4826 removeHiderCallback(); 4827 } 4828 mTextView.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT); 4829 } 4830 4831 private void removeHiderCallback() { 4832 if (mHider != null) { 4833 mTextView.removeCallbacks(mHider); 4834 } 4835 } 4836 4837 @Override 4838 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 4839 return drawable.getIntrinsicWidth() / 2; 4840 } 4841 4842 @Override 4843 protected int getHorizontalGravity(boolean isRtlRun) { 4844 return Gravity.CENTER_HORIZONTAL; 4845 } 4846 4847 @Override 4848 protected int getCursorOffset() { 4849 int offset = super.getCursorOffset(); 4850 if (mDrawableForCursor != null) { 4851 mDrawableForCursor.getPadding(mTempRect); 4852 offset += (mDrawableForCursor.getIntrinsicWidth() 4853 - mTempRect.left - mTempRect.right) / 2; 4854 } 4855 return offset; 4856 } 4857 4858 @Override 4859 int getCursorHorizontalPosition(Layout layout, int offset) { 4860 if (mDrawableForCursor != null) { 4861 final float horizontal = getHorizontal(layout, offset); 4862 return clampHorizontalPosition(mDrawableForCursor, horizontal) + mTempRect.left; 4863 } 4864 return super.getCursorHorizontalPosition(layout, offset); 4865 } 4866 4867 @Override 4868 public boolean onTouchEvent(MotionEvent ev) { 4869 final boolean result = super.onTouchEvent(ev); 4870 4871 switch (ev.getActionMasked()) { 4872 case MotionEvent.ACTION_DOWN: 4873 mDownPositionX = ev.getRawX(); 4874 mDownPositionY = ev.getRawY(); 4875 showMagnifier(ev); 4876 break; 4877 4878 case MotionEvent.ACTION_MOVE: 4879 showMagnifier(ev); 4880 break; 4881 4882 case MotionEvent.ACTION_UP: 4883 if (!offsetHasBeenChanged()) { 4884 final float deltaX = mDownPositionX - ev.getRawX(); 4885 final float deltaY = mDownPositionY - ev.getRawY(); 4886 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 4887 4888 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 4889 mTextView.getContext()); 4890 final int touchSlop = viewConfiguration.getScaledTouchSlop(); 4891 4892 if (distanceSquared < touchSlop * touchSlop) { 4893 // Tapping on the handle toggles the insertion action mode. 4894 if (mTextActionMode != null) { 4895 stopTextActionMode(); 4896 } else { 4897 startInsertionActionMode(); 4898 } 4899 } 4900 } else { 4901 if (mTextActionMode != null) { 4902 mTextActionMode.invalidateContentRect(); 4903 } 4904 } 4905 // Fall through. 4906 case MotionEvent.ACTION_CANCEL: 4907 hideAfterDelay(); 4908 dismissMagnifier(); 4909 break; 4910 4911 default: 4912 break; 4913 } 4914 4915 return result; 4916 } 4917 4918 @Override 4919 public int getCurrentCursorOffset() { 4920 return mTextView.getSelectionStart(); 4921 } 4922 4923 @Override 4924 public void updateSelection(int offset) { 4925 Selection.setSelection((Spannable) mTextView.getText(), offset); 4926 } 4927 4928 @Override 4929 protected void updatePosition(float x, float y, boolean fromTouchScreen) { 4930 Layout layout = mTextView.getLayout(); 4931 int offset; 4932 if (layout != null) { 4933 if (mPreviousLineTouched == UNSET_LINE) { 4934 mPreviousLineTouched = mTextView.getLineAtCoordinate(y); 4935 } 4936 int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); 4937 offset = getOffsetAtCoordinate(layout, currLine, x); 4938 mPreviousLineTouched = currLine; 4939 } else { 4940 offset = -1; 4941 } 4942 positionAtCursorOffset(offset, false, fromTouchScreen); 4943 if (mTextActionMode != null) { 4944 invalidateActionMode(); 4945 } 4946 } 4947 4948 @Override 4949 void onHandleMoved() { 4950 super.onHandleMoved(); 4951 removeHiderCallback(); 4952 } 4953 4954 @Override 4955 public void onDetached() { 4956 super.onDetached(); 4957 removeHiderCallback(); 4958 } 4959 4960 @Override 4961 @MagnifierHandleTrigger 4962 protected int getMagnifierHandleTrigger() { 4963 return MagnifierHandleTrigger.INSERTION; 4964 } 4965 } 4966 4967 @Retention(RetentionPolicy.SOURCE) 4968 @IntDef(prefix = { "HANDLE_TYPE_" }, value = { 4969 HANDLE_TYPE_SELECTION_START, 4970 HANDLE_TYPE_SELECTION_END 4971 }) 4972 public @interface HandleType {} 4973 public static final int HANDLE_TYPE_SELECTION_START = 0; 4974 public static final int HANDLE_TYPE_SELECTION_END = 1; 4975 4976 /** For selection handles */ 4977 @VisibleForTesting 4978 public final class SelectionHandleView extends HandleView { 4979 // Indicates the handle type, selection start (HANDLE_TYPE_SELECTION_START) or selection 4980 // end (HANDLE_TYPE_SELECTION_END). 4981 @HandleType 4982 private final int mHandleType; 4983 // Indicates whether the cursor is making adjustments within a word. 4984 private boolean mInWord = false; 4985 // Difference between touch position and word boundary position. 4986 private float mTouchWordDelta; 4987 // X value of the previous updatePosition call. 4988 private float mPrevX; 4989 // Indicates if the handle has moved a boundary between LTR and RTL text. 4990 private boolean mLanguageDirectionChanged = false; 4991 // Distance from edge of horizontally scrolling text view 4992 // to use to switch to character mode. 4993 private final float mTextViewEdgeSlop; 4994 // Used to save text view location. 4995 private final int[] mTextViewLocation = new int[2]; 4996 4997 public SelectionHandleView(Drawable drawableLtr, Drawable drawableRtl, int id, 4998 @HandleType int handleType) { 4999 super(drawableLtr, drawableRtl, id); 5000 mHandleType = handleType; 5001 ViewConfiguration viewConfiguration = ViewConfiguration.get(mTextView.getContext()); 5002 mTextViewEdgeSlop = viewConfiguration.getScaledTouchSlop() * 4; 5003 } 5004 5005 private boolean isStartHandle() { 5006 return mHandleType == HANDLE_TYPE_SELECTION_START; 5007 } 5008 5009 @Override 5010 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 5011 if (isRtlRun == isStartHandle()) { 5012 return drawable.getIntrinsicWidth() / 4; 5013 } else { 5014 return (drawable.getIntrinsicWidth() * 3) / 4; 5015 } 5016 } 5017 5018 @Override 5019 protected int getHorizontalGravity(boolean isRtlRun) { 5020 return (isRtlRun == isStartHandle()) ? Gravity.LEFT : Gravity.RIGHT; 5021 } 5022 5023 @Override 5024 public int getCurrentCursorOffset() { 5025 return isStartHandle() ? mTextView.getSelectionStart() : mTextView.getSelectionEnd(); 5026 } 5027 5028 @Override 5029 protected void updateSelection(int offset) { 5030 if (isStartHandle()) { 5031 Selection.setSelection((Spannable) mTextView.getText(), offset, 5032 mTextView.getSelectionEnd()); 5033 } else { 5034 Selection.setSelection((Spannable) mTextView.getText(), 5035 mTextView.getSelectionStart(), offset); 5036 } 5037 updateDrawable(); 5038 if (mTextActionMode != null) { 5039 invalidateActionMode(); 5040 } 5041 } 5042 5043 @Override 5044 protected void updatePosition(float x, float y, boolean fromTouchScreen) { 5045 final Layout layout = mTextView.getLayout(); 5046 if (layout == null) { 5047 // HandleView will deal appropriately in positionAtCursorOffset when 5048 // layout is null. 5049 positionAndAdjustForCrossingHandles(mTextView.getOffsetForPosition(x, y), 5050 fromTouchScreen); 5051 return; 5052 } 5053 5054 if (mPreviousLineTouched == UNSET_LINE) { 5055 mPreviousLineTouched = mTextView.getLineAtCoordinate(y); 5056 } 5057 5058 boolean positionCursor = false; 5059 final int anotherHandleOffset = 5060 isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); 5061 int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); 5062 int initialOffset = getOffsetAtCoordinate(layout, currLine, x); 5063 5064 if (isStartHandle() && initialOffset >= anotherHandleOffset 5065 || !isStartHandle() && initialOffset <= anotherHandleOffset) { 5066 // Handles have crossed, bound it to the first selected line and 5067 // adjust by word / char as normal. 5068 currLine = layout.getLineForOffset(anotherHandleOffset); 5069 initialOffset = getOffsetAtCoordinate(layout, currLine, x); 5070 } 5071 5072 int offset = initialOffset; 5073 final int wordEnd = getWordEnd(offset); 5074 final int wordStart = getWordStart(offset); 5075 5076 if (mPrevX == UNSET_X_VALUE) { 5077 mPrevX = x; 5078 } 5079 5080 final int currentOffset = getCurrentCursorOffset(); 5081 final boolean rtlAtCurrentOffset = isAtRtlRun(layout, currentOffset); 5082 final boolean atRtl = isAtRtlRun(layout, offset); 5083 final boolean isLvlBoundary = layout.isLevelBoundary(offset); 5084 5085 // We can't determine if the user is expanding or shrinking the selection if they're 5086 // on a bi-di boundary, so until they've moved past the boundary we'll just place 5087 // the cursor at the current position. 5088 if (isLvlBoundary || (rtlAtCurrentOffset && !atRtl) || (!rtlAtCurrentOffset && atRtl)) { 5089 // We're on a boundary or this is the first direction change -- just update 5090 // to the current position. 5091 mLanguageDirectionChanged = true; 5092 mTouchWordDelta = 0.0f; 5093 positionAndAdjustForCrossingHandles(offset, fromTouchScreen); 5094 return; 5095 } else if (mLanguageDirectionChanged && !isLvlBoundary) { 5096 // We've just moved past the boundary so update the position. After this we can 5097 // figure out if the user is expanding or shrinking to go by word or character. 5098 positionAndAdjustForCrossingHandles(offset, fromTouchScreen); 5099 mTouchWordDelta = 0.0f; 5100 mLanguageDirectionChanged = false; 5101 return; 5102 } 5103 5104 boolean isExpanding; 5105 final float xDiff = x - mPrevX; 5106 if (isStartHandle()) { 5107 isExpanding = currLine < mPreviousLineTouched; 5108 } else { 5109 isExpanding = currLine > mPreviousLineTouched; 5110 } 5111 if (atRtl == isStartHandle()) { 5112 isExpanding |= xDiff > 0; 5113 } else { 5114 isExpanding |= xDiff < 0; 5115 } 5116 5117 if (mTextView.getHorizontallyScrolling()) { 5118 if (positionNearEdgeOfScrollingView(x, atRtl) 5119 && ((isStartHandle() && mTextView.getScrollX() != 0) 5120 || (!isStartHandle() 5121 && mTextView.canScrollHorizontally(atRtl ? -1 : 1))) 5122 && ((isExpanding && ((isStartHandle() && offset < currentOffset) 5123 || (!isStartHandle() && offset > currentOffset))) 5124 || !isExpanding)) { 5125 // If we're expanding ensure that the offset is actually expanding compared to 5126 // the current offset, if the handle snapped to the word, the finger position 5127 // may be out of sync and we don't want the selection to jump back. 5128 mTouchWordDelta = 0.0f; 5129 final int nextOffset = (atRtl == isStartHandle()) 5130 ? layout.getOffsetToRightOf(mPreviousOffset) 5131 : layout.getOffsetToLeftOf(mPreviousOffset); 5132 positionAndAdjustForCrossingHandles(nextOffset, fromTouchScreen); 5133 return; 5134 } 5135 } 5136 5137 if (isExpanding) { 5138 // User is increasing the selection. 5139 int wordBoundary = isStartHandle() ? wordStart : wordEnd; 5140 final boolean snapToWord = (!mInWord 5141 || (isStartHandle() ? currLine < mPrevLine : currLine > mPrevLine)) 5142 && atRtl == isAtRtlRun(layout, wordBoundary); 5143 if (snapToWord) { 5144 // Sometimes words can be broken across lines (Chinese, hyphenation). 5145 // We still snap to the word boundary but we only use the letters on the 5146 // current line to determine if the user is far enough into the word to snap. 5147 if (layout.getLineForOffset(wordBoundary) != currLine) { 5148 wordBoundary = isStartHandle() 5149 ? layout.getLineStart(currLine) : layout.getLineEnd(currLine); 5150 } 5151 final int offsetThresholdToSnap = isStartHandle() 5152 ? wordEnd - ((wordEnd - wordBoundary) / 2) 5153 : wordStart + ((wordBoundary - wordStart) / 2); 5154 if (isStartHandle() 5155 && (offset <= offsetThresholdToSnap || currLine < mPrevLine)) { 5156 // User is far enough into the word or on a different line so we expand by 5157 // word. 5158 offset = wordStart; 5159 } else if (!isStartHandle() 5160 && (offset >= offsetThresholdToSnap || currLine > mPrevLine)) { 5161 // User is far enough into the word or on a different line so we expand by 5162 // word. 5163 offset = wordEnd; 5164 } else { 5165 offset = mPreviousOffset; 5166 } 5167 } 5168 if ((isStartHandle() && offset < initialOffset) 5169 || (!isStartHandle() && offset > initialOffset)) { 5170 final float adjustedX = getHorizontal(layout, offset); 5171 mTouchWordDelta = 5172 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 5173 } else { 5174 mTouchWordDelta = 0.0f; 5175 } 5176 positionCursor = true; 5177 } else { 5178 final int adjustedOffset = 5179 getOffsetAtCoordinate(layout, currLine, x - mTouchWordDelta); 5180 final boolean shrinking = isStartHandle() 5181 ? adjustedOffset > mPreviousOffset || currLine > mPrevLine 5182 : adjustedOffset < mPreviousOffset || currLine < mPrevLine; 5183 if (shrinking) { 5184 // User is shrinking the selection. 5185 if (currLine != mPrevLine) { 5186 // We're on a different line, so we'll snap to word boundaries. 5187 offset = isStartHandle() ? wordStart : wordEnd; 5188 if ((isStartHandle() && offset < initialOffset) 5189 || (!isStartHandle() && offset > initialOffset)) { 5190 final float adjustedX = getHorizontal(layout, offset); 5191 mTouchWordDelta = 5192 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 5193 } else { 5194 mTouchWordDelta = 0.0f; 5195 } 5196 } else { 5197 offset = adjustedOffset; 5198 } 5199 positionCursor = true; 5200 } else if ((isStartHandle() && adjustedOffset < mPreviousOffset) 5201 || (!isStartHandle() && adjustedOffset > mPreviousOffset)) { 5202 // Handle has jumped to the word boundary, and the user is moving 5203 // their finger towards the handle, the delta should be updated. 5204 mTouchWordDelta = mTextView.convertToLocalHorizontalCoordinate(x) 5205 - getHorizontal(layout, mPreviousOffset); 5206 } 5207 } 5208 5209 if (positionCursor) { 5210 mPreviousLineTouched = currLine; 5211 positionAndAdjustForCrossingHandles(offset, fromTouchScreen); 5212 } 5213 mPrevX = x; 5214 } 5215 5216 @Override 5217 protected void positionAtCursorOffset(int offset, boolean forceUpdatePosition, 5218 boolean fromTouchScreen) { 5219 super.positionAtCursorOffset(offset, forceUpdatePosition, fromTouchScreen); 5220 mInWord = (offset != -1) && !getWordIteratorWithText().isBoundary(offset); 5221 } 5222 5223 @Override 5224 public boolean onTouchEvent(MotionEvent event) { 5225 boolean superResult = super.onTouchEvent(event); 5226 5227 switch (event.getActionMasked()) { 5228 case MotionEvent.ACTION_DOWN: 5229 // Reset the touch word offset and x value when the user 5230 // re-engages the handle. 5231 mTouchWordDelta = 0.0f; 5232 mPrevX = UNSET_X_VALUE; 5233 showMagnifier(event); 5234 break; 5235 5236 case MotionEvent.ACTION_MOVE: 5237 showMagnifier(event); 5238 break; 5239 5240 case MotionEvent.ACTION_UP: 5241 case MotionEvent.ACTION_CANCEL: 5242 dismissMagnifier(); 5243 break; 5244 } 5245 5246 return superResult; 5247 } 5248 5249 private void positionAndAdjustForCrossingHandles(int offset, boolean fromTouchScreen) { 5250 final int anotherHandleOffset = 5251 isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); 5252 if ((isStartHandle() && offset >= anotherHandleOffset) 5253 || (!isStartHandle() && offset <= anotherHandleOffset)) { 5254 mTouchWordDelta = 0.0f; 5255 final Layout layout = mTextView.getLayout(); 5256 if (layout != null && offset != anotherHandleOffset) { 5257 final float horiz = getHorizontal(layout, offset); 5258 final float anotherHandleHoriz = getHorizontal(layout, anotherHandleOffset, 5259 !isStartHandle()); 5260 final float currentHoriz = getHorizontal(layout, mPreviousOffset); 5261 if (currentHoriz < anotherHandleHoriz && horiz < anotherHandleHoriz 5262 || currentHoriz > anotherHandleHoriz && horiz > anotherHandleHoriz) { 5263 // This handle passes another one as it crossed a direction boundary. 5264 // Don't minimize the selection, but keep the handle at the run boundary. 5265 final int currentOffset = getCurrentCursorOffset(); 5266 final int offsetToGetRunRange = isStartHandle() 5267 ? currentOffset : Math.max(currentOffset - 1, 0); 5268 final long range = layout.getRunRange(offsetToGetRunRange); 5269 if (isStartHandle()) { 5270 offset = TextUtils.unpackRangeStartFromLong(range); 5271 } else { 5272 offset = TextUtils.unpackRangeEndFromLong(range); 5273 } 5274 positionAtCursorOffset(offset, false, fromTouchScreen); 5275 return; 5276 } 5277 } 5278 // Handles can not cross and selection is at least one character. 5279 offset = getNextCursorOffset(anotherHandleOffset, !isStartHandle()); 5280 } 5281 positionAtCursorOffset(offset, false, fromTouchScreen); 5282 } 5283 5284 private boolean positionNearEdgeOfScrollingView(float x, boolean atRtl) { 5285 mTextView.getLocationOnScreen(mTextViewLocation); 5286 boolean nearEdge; 5287 if (atRtl == isStartHandle()) { 5288 int rightEdge = mTextViewLocation[0] + mTextView.getWidth() 5289 - mTextView.getPaddingRight(); 5290 nearEdge = x > rightEdge - mTextViewEdgeSlop; 5291 } else { 5292 int leftEdge = mTextViewLocation[0] + mTextView.getPaddingLeft(); 5293 nearEdge = x < leftEdge + mTextViewEdgeSlop; 5294 } 5295 return nearEdge; 5296 } 5297 5298 @Override 5299 protected boolean isAtRtlRun(@NonNull Layout layout, int offset) { 5300 final int offsetToCheck = isStartHandle() ? offset : Math.max(offset - 1, 0); 5301 return layout.isRtlCharAt(offsetToCheck); 5302 } 5303 5304 @Override 5305 public float getHorizontal(@NonNull Layout layout, int offset) { 5306 return getHorizontal(layout, offset, isStartHandle()); 5307 } 5308 5309 private float getHorizontal(@NonNull Layout layout, int offset, boolean startHandle) { 5310 final int line = layout.getLineForOffset(offset); 5311 final int offsetToCheck = startHandle ? offset : Math.max(offset - 1, 0); 5312 final boolean isRtlChar = layout.isRtlCharAt(offsetToCheck); 5313 final boolean isRtlParagraph = layout.getParagraphDirection(line) == -1; 5314 return (isRtlChar == isRtlParagraph) 5315 ? layout.getPrimaryHorizontal(offset) : layout.getSecondaryHorizontal(offset); 5316 } 5317 5318 @Override 5319 protected int getOffsetAtCoordinate(@NonNull Layout layout, int line, float x) { 5320 final float localX = mTextView.convertToLocalHorizontalCoordinate(x); 5321 final int primaryOffset = layout.getOffsetForHorizontal(line, localX, true); 5322 if (!layout.isLevelBoundary(primaryOffset)) { 5323 return primaryOffset; 5324 } 5325 final int secondaryOffset = layout.getOffsetForHorizontal(line, localX, false); 5326 final int currentOffset = getCurrentCursorOffset(); 5327 final int primaryDiff = Math.abs(primaryOffset - currentOffset); 5328 final int secondaryDiff = Math.abs(secondaryOffset - currentOffset); 5329 if (primaryDiff < secondaryDiff) { 5330 return primaryOffset; 5331 } else if (primaryDiff > secondaryDiff) { 5332 return secondaryOffset; 5333 } else { 5334 final int offsetToCheck = isStartHandle() 5335 ? currentOffset : Math.max(currentOffset - 1, 0); 5336 final boolean isRtlChar = layout.isRtlCharAt(offsetToCheck); 5337 final boolean isRtlParagraph = layout.getParagraphDirection(line) == -1; 5338 return isRtlChar == isRtlParagraph ? primaryOffset : secondaryOffset; 5339 } 5340 } 5341 5342 @MagnifierHandleTrigger 5343 protected int getMagnifierHandleTrigger() { 5344 return isStartHandle() 5345 ? MagnifierHandleTrigger.SELECTION_START 5346 : MagnifierHandleTrigger.SELECTION_END; 5347 } 5348 } 5349 5350 private int getCurrentLineAdjustedForSlop(Layout layout, int prevLine, float y) { 5351 final int trueLine = mTextView.getLineAtCoordinate(y); 5352 if (layout == null || prevLine > layout.getLineCount() 5353 || layout.getLineCount() <= 0 || prevLine < 0) { 5354 // Invalid parameters, just return whatever line is at y. 5355 return trueLine; 5356 } 5357 5358 if (Math.abs(trueLine - prevLine) >= 2) { 5359 // Only stick to lines if we're within a line of the previous selection. 5360 return trueLine; 5361 } 5362 5363 final float verticalOffset = mTextView.viewportToContentVerticalOffset(); 5364 final int lineCount = layout.getLineCount(); 5365 final float slop = mTextView.getLineHeight() * LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS; 5366 5367 final float firstLineTop = layout.getLineTop(0) + verticalOffset; 5368 final float prevLineTop = layout.getLineTop(prevLine) + verticalOffset; 5369 final float yTopBound = Math.max(prevLineTop - slop, firstLineTop + slop); 5370 5371 final float lastLineBottom = layout.getLineBottom(lineCount - 1) + verticalOffset; 5372 final float prevLineBottom = layout.getLineBottom(prevLine) + verticalOffset; 5373 final float yBottomBound = Math.min(prevLineBottom + slop, lastLineBottom - slop); 5374 5375 // Determine if we've moved lines based on y position and previous line. 5376 int currLine; 5377 if (y <= yTopBound) { 5378 currLine = Math.max(prevLine - 1, 0); 5379 } else if (y >= yBottomBound) { 5380 currLine = Math.min(prevLine + 1, lineCount - 1); 5381 } else { 5382 currLine = prevLine; 5383 } 5384 return currLine; 5385 } 5386 5387 /** 5388 * A CursorController instance can be used to control a cursor in the text. 5389 */ 5390 private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { 5391 /** 5392 * Makes the cursor controller visible on screen. 5393 * See also {@link #hide()}. 5394 */ 5395 public void show(); 5396 5397 /** 5398 * Hide the cursor controller from screen. 5399 * See also {@link #show()}. 5400 */ 5401 public void hide(); 5402 5403 /** 5404 * Called when the view is detached from window. Perform house keeping task, such as 5405 * stopping Runnable thread that would otherwise keep a reference on the context, thus 5406 * preventing the activity from being recycled. 5407 */ 5408 public void onDetached(); 5409 5410 public boolean isCursorBeingModified(); 5411 5412 public boolean isActive(); 5413 } 5414 5415 private class InsertionPointCursorController implements CursorController { 5416 private InsertionHandleView mHandle; 5417 5418 public void show() { 5419 getHandle().show(); 5420 5421 if (mSelectionModifierCursorController != null) { 5422 mSelectionModifierCursorController.hide(); 5423 } 5424 } 5425 5426 public void hide() { 5427 if (mHandle != null) { 5428 mHandle.hide(); 5429 } 5430 } 5431 5432 public void onTouchModeChanged(boolean isInTouchMode) { 5433 if (!isInTouchMode) { 5434 hide(); 5435 } 5436 } 5437 5438 private InsertionHandleView getHandle() { 5439 if (mSelectHandleCenter == null) { 5440 mSelectHandleCenter = mTextView.getContext().getDrawable( 5441 mTextView.mTextSelectHandleRes); 5442 } 5443 if (mHandle == null) { 5444 mHandle = new InsertionHandleView(mSelectHandleCenter); 5445 } 5446 return mHandle; 5447 } 5448 5449 @Override 5450 public void onDetached() { 5451 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 5452 observer.removeOnTouchModeChangeListener(this); 5453 5454 if (mHandle != null) mHandle.onDetached(); 5455 } 5456 5457 @Override 5458 public boolean isCursorBeingModified() { 5459 return mHandle != null && mHandle.isDragging(); 5460 } 5461 5462 @Override 5463 public boolean isActive() { 5464 return mHandle != null && mHandle.isShowing(); 5465 } 5466 5467 public void invalidateHandle() { 5468 if (mHandle != null) { 5469 mHandle.invalidate(); 5470 } 5471 } 5472 } 5473 5474 class SelectionModifierCursorController implements CursorController { 5475 // The cursor controller handles, lazily created when shown. 5476 private SelectionHandleView mStartHandle; 5477 private SelectionHandleView mEndHandle; 5478 // The offsets of that last touch down event. Remembered to start selection there. 5479 private int mMinTouchOffset, mMaxTouchOffset; 5480 5481 private float mDownPositionX, mDownPositionY; 5482 private boolean mGestureStayedInTapRegion; 5483 5484 // Where the user first starts the drag motion. 5485 private int mStartOffset = -1; 5486 5487 private boolean mHaventMovedEnoughToStartDrag; 5488 // The line that a selection happened most recently with the drag accelerator. 5489 private int mLineSelectionIsOn = -1; 5490 // Whether the drag accelerator has selected past the initial line. 5491 private boolean mSwitchedLines = false; 5492 5493 // Indicates the drag accelerator mode that the user is currently using. 5494 private int mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; 5495 // Drag accelerator is inactive. 5496 private static final int DRAG_ACCELERATOR_MODE_INACTIVE = 0; 5497 // Character based selection by dragging. Only for mouse. 5498 private static final int DRAG_ACCELERATOR_MODE_CHARACTER = 1; 5499 // Word based selection by dragging. Enabled after long pressing or double tapping. 5500 private static final int DRAG_ACCELERATOR_MODE_WORD = 2; 5501 // Paragraph based selection by dragging. Enabled after mouse triple click. 5502 private static final int DRAG_ACCELERATOR_MODE_PARAGRAPH = 3; 5503 5504 SelectionModifierCursorController() { 5505 resetTouchOffsets(); 5506 } 5507 5508 public void show() { 5509 if (mTextView.isInBatchEditMode()) { 5510 return; 5511 } 5512 initDrawables(); 5513 initHandles(); 5514 } 5515 5516 private void initDrawables() { 5517 if (mSelectHandleLeft == null) { 5518 mSelectHandleLeft = mTextView.getContext().getDrawable( 5519 mTextView.mTextSelectHandleLeftRes); 5520 } 5521 if (mSelectHandleRight == null) { 5522 mSelectHandleRight = mTextView.getContext().getDrawable( 5523 mTextView.mTextSelectHandleRightRes); 5524 } 5525 } 5526 5527 private void initHandles() { 5528 // Lazy object creation has to be done before updatePosition() is called. 5529 if (mStartHandle == null) { 5530 mStartHandle = new SelectionHandleView(mSelectHandleLeft, mSelectHandleRight, 5531 com.android.internal.R.id.selection_start_handle, 5532 HANDLE_TYPE_SELECTION_START); 5533 } 5534 if (mEndHandle == null) { 5535 mEndHandle = new SelectionHandleView(mSelectHandleRight, mSelectHandleLeft, 5536 com.android.internal.R.id.selection_end_handle, 5537 HANDLE_TYPE_SELECTION_END); 5538 } 5539 5540 mStartHandle.show(); 5541 mEndHandle.show(); 5542 5543 hideInsertionPointCursorController(); 5544 } 5545 5546 public void hide() { 5547 if (mStartHandle != null) mStartHandle.hide(); 5548 if (mEndHandle != null) mEndHandle.hide(); 5549 } 5550 5551 public void enterDrag(int dragAcceleratorMode) { 5552 // Just need to init the handles / hide insertion cursor. 5553 show(); 5554 mDragAcceleratorMode = dragAcceleratorMode; 5555 // Start location of selection. 5556 mStartOffset = mTextView.getOffsetForPosition(mLastDownPositionX, 5557 mLastDownPositionY); 5558 mLineSelectionIsOn = mTextView.getLineAtCoordinate(mLastDownPositionY); 5559 // Don't show the handles until user has lifted finger. 5560 hide(); 5561 5562 // This stops scrolling parents from intercepting the touch event, allowing 5563 // the user to continue dragging across the screen to select text; TextView will 5564 // scroll as necessary. 5565 mTextView.getParent().requestDisallowInterceptTouchEvent(true); 5566 mTextView.cancelLongPress(); 5567 } 5568 5569 public void onTouchEvent(MotionEvent event) { 5570 // This is done even when the View does not have focus, so that long presses can start 5571 // selection and tap can move cursor from this tap position. 5572 final float eventX = event.getX(); 5573 final float eventY = event.getY(); 5574 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 5575 switch (event.getActionMasked()) { 5576 case MotionEvent.ACTION_DOWN: 5577 if (extractedTextModeWillBeStarted()) { 5578 // Prevent duplicating the selection handles until the mode starts. 5579 hide(); 5580 } else { 5581 // Remember finger down position, to be able to start selection from there. 5582 mMinTouchOffset = mMaxTouchOffset = mTextView.getOffsetForPosition( 5583 eventX, eventY); 5584 5585 // Double tap detection 5586 if (mGestureStayedInTapRegion) { 5587 if (mTapState == TAP_STATE_DOUBLE_TAP 5588 || mTapState == TAP_STATE_TRIPLE_CLICK) { 5589 final float deltaX = eventX - mDownPositionX; 5590 final float deltaY = eventY - mDownPositionY; 5591 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 5592 5593 ViewConfiguration viewConfiguration = ViewConfiguration.get( 5594 mTextView.getContext()); 5595 int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop(); 5596 boolean stayedInArea = 5597 distanceSquared < doubleTapSlop * doubleTapSlop; 5598 5599 if (stayedInArea && (isMouse || isPositionOnText(eventX, eventY))) { 5600 if (mTapState == TAP_STATE_DOUBLE_TAP) { 5601 selectCurrentWordAndStartDrag(); 5602 } else if (mTapState == TAP_STATE_TRIPLE_CLICK) { 5603 selectCurrentParagraphAndStartDrag(); 5604 } 5605 mDiscardNextActionUp = true; 5606 } 5607 } 5608 } 5609 5610 mDownPositionX = eventX; 5611 mDownPositionY = eventY; 5612 mGestureStayedInTapRegion = true; 5613 mHaventMovedEnoughToStartDrag = true; 5614 } 5615 break; 5616 5617 case MotionEvent.ACTION_POINTER_DOWN: 5618 case MotionEvent.ACTION_POINTER_UP: 5619 // Handle multi-point gestures. Keep min and max offset positions. 5620 // Only activated for devices that correctly handle multi-touch. 5621 if (mTextView.getContext().getPackageManager().hasSystemFeature( 5622 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { 5623 updateMinAndMaxOffsets(event); 5624 } 5625 break; 5626 5627 case MotionEvent.ACTION_MOVE: 5628 final ViewConfiguration viewConfig = ViewConfiguration.get( 5629 mTextView.getContext()); 5630 final int touchSlop = viewConfig.getScaledTouchSlop(); 5631 5632 if (mGestureStayedInTapRegion || mHaventMovedEnoughToStartDrag) { 5633 final float deltaX = eventX - mDownPositionX; 5634 final float deltaY = eventY - mDownPositionY; 5635 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 5636 5637 if (mGestureStayedInTapRegion) { 5638 int doubleTapTouchSlop = viewConfig.getScaledDoubleTapTouchSlop(); 5639 mGestureStayedInTapRegion = 5640 distanceSquared <= doubleTapTouchSlop * doubleTapTouchSlop; 5641 } 5642 if (mHaventMovedEnoughToStartDrag) { 5643 // We don't start dragging until the user has moved enough. 5644 mHaventMovedEnoughToStartDrag = 5645 distanceSquared <= touchSlop * touchSlop; 5646 } 5647 } 5648 5649 if (isMouse && !isDragAcceleratorActive()) { 5650 final int offset = mTextView.getOffsetForPosition(eventX, eventY); 5651 if (mTextView.hasSelection() 5652 && (!mHaventMovedEnoughToStartDrag || mStartOffset != offset) 5653 && offset >= mTextView.getSelectionStart() 5654 && offset <= mTextView.getSelectionEnd()) { 5655 startDragAndDrop(); 5656 break; 5657 } 5658 5659 if (mStartOffset != offset) { 5660 // Start character based drag accelerator. 5661 stopTextActionMode(); 5662 enterDrag(DRAG_ACCELERATOR_MODE_CHARACTER); 5663 mDiscardNextActionUp = true; 5664 mHaventMovedEnoughToStartDrag = false; 5665 } 5666 } 5667 5668 if (mStartHandle != null && mStartHandle.isShowing()) { 5669 // Don't do the drag if the handles are showing already. 5670 break; 5671 } 5672 5673 updateSelection(event); 5674 break; 5675 5676 case MotionEvent.ACTION_UP: 5677 if (!isDragAcceleratorActive()) { 5678 break; 5679 } 5680 updateSelection(event); 5681 5682 // No longer dragging to select text, let the parent intercept events. 5683 mTextView.getParent().requestDisallowInterceptTouchEvent(false); 5684 5685 // No longer the first dragging motion, reset. 5686 resetDragAcceleratorState(); 5687 5688 if (mTextView.hasSelection()) { 5689 // Drag selection should not be adjusted by the text classifier. 5690 startSelectionActionModeAsync(mHaventMovedEnoughToStartDrag); 5691 } 5692 break; 5693 } 5694 } 5695 5696 private void updateSelection(MotionEvent event) { 5697 if (mTextView.getLayout() != null) { 5698 switch (mDragAcceleratorMode) { 5699 case DRAG_ACCELERATOR_MODE_CHARACTER: 5700 updateCharacterBasedSelection(event); 5701 break; 5702 case DRAG_ACCELERATOR_MODE_WORD: 5703 updateWordBasedSelection(event); 5704 break; 5705 case DRAG_ACCELERATOR_MODE_PARAGRAPH: 5706 updateParagraphBasedSelection(event); 5707 break; 5708 } 5709 } 5710 } 5711 5712 /** 5713 * If the TextView allows text selection, selects the current paragraph and starts a drag. 5714 * 5715 * @return true if the drag was started. 5716 */ 5717 private boolean selectCurrentParagraphAndStartDrag() { 5718 if (mInsertionActionModeRunnable != null) { 5719 mTextView.removeCallbacks(mInsertionActionModeRunnable); 5720 } 5721 stopTextActionMode(); 5722 if (!selectCurrentParagraph()) { 5723 return false; 5724 } 5725 enterDrag(SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_PARAGRAPH); 5726 return true; 5727 } 5728 5729 private void updateCharacterBasedSelection(MotionEvent event) { 5730 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 5731 updateSelectionInternal(mStartOffset, offset, 5732 event.isFromSource(InputDevice.SOURCE_TOUCHSCREEN)); 5733 } 5734 5735 private void updateWordBasedSelection(MotionEvent event) { 5736 if (mHaventMovedEnoughToStartDrag) { 5737 return; 5738 } 5739 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 5740 final ViewConfiguration viewConfig = ViewConfiguration.get( 5741 mTextView.getContext()); 5742 final float eventX = event.getX(); 5743 final float eventY = event.getY(); 5744 final int currLine; 5745 if (isMouse) { 5746 // No need to offset the y coordinate for mouse input. 5747 currLine = mTextView.getLineAtCoordinate(eventY); 5748 } else { 5749 float y = eventY; 5750 if (mSwitchedLines) { 5751 // Offset the finger by the same vertical offset as the handles. 5752 // This improves visibility of the content being selected by 5753 // shifting the finger below the content, this is applied once 5754 // the user has switched lines. 5755 final int touchSlop = viewConfig.getScaledTouchSlop(); 5756 final float fingerOffset = (mStartHandle != null) 5757 ? mStartHandle.getIdealVerticalOffset() 5758 : touchSlop; 5759 y = eventY - fingerOffset; 5760 } 5761 5762 currLine = getCurrentLineAdjustedForSlop(mTextView.getLayout(), mLineSelectionIsOn, 5763 y); 5764 if (!mSwitchedLines && currLine != mLineSelectionIsOn) { 5765 // Break early here, we want to offset the finger position from 5766 // the selection highlight, once the user moved their finger 5767 // to a different line we should apply the offset and *not* switch 5768 // lines until recomputing the position with the finger offset. 5769 mSwitchedLines = true; 5770 return; 5771 } 5772 } 5773 5774 int startOffset; 5775 int offset = mTextView.getOffsetAtCoordinate(currLine, eventX); 5776 // Snap to word boundaries. 5777 if (mStartOffset < offset) { 5778 // Expanding with end handle. 5779 offset = getWordEnd(offset); 5780 startOffset = getWordStart(mStartOffset); 5781 } else { 5782 // Expanding with start handle. 5783 offset = getWordStart(offset); 5784 startOffset = getWordEnd(mStartOffset); 5785 if (startOffset == offset) { 5786 offset = getNextCursorOffset(offset, false); 5787 } 5788 } 5789 mLineSelectionIsOn = currLine; 5790 updateSelectionInternal(startOffset, offset, 5791 event.isFromSource(InputDevice.SOURCE_TOUCHSCREEN)); 5792 } 5793 5794 private void updateParagraphBasedSelection(MotionEvent event) { 5795 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 5796 5797 final int start = Math.min(offset, mStartOffset); 5798 final int end = Math.max(offset, mStartOffset); 5799 final long paragraphsRange = getParagraphsRange(start, end); 5800 final int selectionStart = TextUtils.unpackRangeStartFromLong(paragraphsRange); 5801 final int selectionEnd = TextUtils.unpackRangeEndFromLong(paragraphsRange); 5802 updateSelectionInternal(selectionStart, selectionEnd, 5803 event.isFromSource(InputDevice.SOURCE_TOUCHSCREEN)); 5804 } 5805 5806 private void updateSelectionInternal(int selectionStart, int selectionEnd, 5807 boolean fromTouchScreen) { 5808 final boolean performHapticFeedback = fromTouchScreen && mHapticTextHandleEnabled 5809 && ((mTextView.getSelectionStart() != selectionStart) 5810 || (mTextView.getSelectionEnd() != selectionEnd)); 5811 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 5812 if (performHapticFeedback) { 5813 mTextView.performHapticFeedback(HapticFeedbackConstants.TEXT_HANDLE_MOVE); 5814 } 5815 } 5816 5817 /** 5818 * @param event 5819 */ 5820 private void updateMinAndMaxOffsets(MotionEvent event) { 5821 int pointerCount = event.getPointerCount(); 5822 for (int index = 0; index < pointerCount; index++) { 5823 int offset = mTextView.getOffsetForPosition(event.getX(index), event.getY(index)); 5824 if (offset < mMinTouchOffset) mMinTouchOffset = offset; 5825 if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; 5826 } 5827 } 5828 5829 public int getMinTouchOffset() { 5830 return mMinTouchOffset; 5831 } 5832 5833 public int getMaxTouchOffset() { 5834 return mMaxTouchOffset; 5835 } 5836 5837 public void resetTouchOffsets() { 5838 mMinTouchOffset = mMaxTouchOffset = -1; 5839 resetDragAcceleratorState(); 5840 } 5841 5842 private void resetDragAcceleratorState() { 5843 mStartOffset = -1; 5844 mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; 5845 mSwitchedLines = false; 5846 final int selectionStart = mTextView.getSelectionStart(); 5847 final int selectionEnd = mTextView.getSelectionEnd(); 5848 if (selectionStart > selectionEnd) { 5849 Selection.setSelection((Spannable) mTextView.getText(), 5850 selectionEnd, selectionStart); 5851 } 5852 } 5853 5854 /** 5855 * @return true iff this controller is currently used to move the selection start. 5856 */ 5857 public boolean isSelectionStartDragged() { 5858 return mStartHandle != null && mStartHandle.isDragging(); 5859 } 5860 5861 @Override 5862 public boolean isCursorBeingModified() { 5863 return isDragAcceleratorActive() || isSelectionStartDragged() 5864 || (mEndHandle != null && mEndHandle.isDragging()); 5865 } 5866 5867 /** 5868 * @return true if the user is selecting text using the drag accelerator. 5869 */ 5870 public boolean isDragAcceleratorActive() { 5871 return mDragAcceleratorMode != DRAG_ACCELERATOR_MODE_INACTIVE; 5872 } 5873 5874 public void onTouchModeChanged(boolean isInTouchMode) { 5875 if (!isInTouchMode) { 5876 hide(); 5877 } 5878 } 5879 5880 @Override 5881 public void onDetached() { 5882 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 5883 observer.removeOnTouchModeChangeListener(this); 5884 5885 if (mStartHandle != null) mStartHandle.onDetached(); 5886 if (mEndHandle != null) mEndHandle.onDetached(); 5887 } 5888 5889 @Override 5890 public boolean isActive() { 5891 return mStartHandle != null && mStartHandle.isShowing(); 5892 } 5893 5894 public void invalidateHandles() { 5895 if (mStartHandle != null) { 5896 mStartHandle.invalidate(); 5897 } 5898 if (mEndHandle != null) { 5899 mEndHandle.invalidate(); 5900 } 5901 } 5902 } 5903 5904 private class CorrectionHighlighter { 5905 private final Path mPath = new Path(); 5906 private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 5907 private int mStart, mEnd; 5908 private long mFadingStartTime; 5909 private RectF mTempRectF; 5910 private static final int FADE_OUT_DURATION = 400; 5911 5912 public CorrectionHighlighter() { 5913 mPaint.setCompatibilityScaling( 5914 mTextView.getResources().getCompatibilityInfo().applicationScale); 5915 mPaint.setStyle(Paint.Style.FILL); 5916 } 5917 5918 public void highlight(CorrectionInfo info) { 5919 mStart = info.getOffset(); 5920 mEnd = mStart + info.getNewText().length(); 5921 mFadingStartTime = SystemClock.uptimeMillis(); 5922 5923 if (mStart < 0 || mEnd < 0) { 5924 stopAnimation(); 5925 } 5926 } 5927 5928 public void draw(Canvas canvas, int cursorOffsetVertical) { 5929 if (updatePath() && updatePaint()) { 5930 if (cursorOffsetVertical != 0) { 5931 canvas.translate(0, cursorOffsetVertical); 5932 } 5933 5934 canvas.drawPath(mPath, mPaint); 5935 5936 if (cursorOffsetVertical != 0) { 5937 canvas.translate(0, -cursorOffsetVertical); 5938 } 5939 invalidate(true); // TODO invalidate cursor region only 5940 } else { 5941 stopAnimation(); 5942 invalidate(false); // TODO invalidate cursor region only 5943 } 5944 } 5945 5946 private boolean updatePaint() { 5947 final long duration = SystemClock.uptimeMillis() - mFadingStartTime; 5948 if (duration > FADE_OUT_DURATION) return false; 5949 5950 final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; 5951 final int highlightColorAlpha = Color.alpha(mTextView.mHighlightColor); 5952 final int color = (mTextView.mHighlightColor & 0x00FFFFFF) 5953 + ((int) (highlightColorAlpha * coef) << 24); 5954 mPaint.setColor(color); 5955 return true; 5956 } 5957 5958 private boolean updatePath() { 5959 final Layout layout = mTextView.getLayout(); 5960 if (layout == null) return false; 5961 5962 // Update in case text is edited while the animation is run 5963 final int length = mTextView.getText().length(); 5964 int start = Math.min(length, mStart); 5965 int end = Math.min(length, mEnd); 5966 5967 mPath.reset(); 5968 layout.getSelectionPath(start, end, mPath); 5969 return true; 5970 } 5971 5972 private void invalidate(boolean delayed) { 5973 if (mTextView.getLayout() == null) return; 5974 5975 if (mTempRectF == null) mTempRectF = new RectF(); 5976 mPath.computeBounds(mTempRectF, false); 5977 5978 int left = mTextView.getCompoundPaddingLeft(); 5979 int top = mTextView.getExtendedPaddingTop() + mTextView.getVerticalOffset(true); 5980 5981 if (delayed) { 5982 mTextView.postInvalidateOnAnimation( 5983 left + (int) mTempRectF.left, top + (int) mTempRectF.top, 5984 left + (int) mTempRectF.right, top + (int) mTempRectF.bottom); 5985 } else { 5986 mTextView.postInvalidate((int) mTempRectF.left, (int) mTempRectF.top, 5987 (int) mTempRectF.right, (int) mTempRectF.bottom); 5988 } 5989 } 5990 5991 private void stopAnimation() { 5992 Editor.this.mCorrectionHighlighter = null; 5993 } 5994 } 5995 5996 private static class ErrorPopup extends PopupWindow { 5997 private boolean mAbove = false; 5998 private final TextView mView; 5999 private int mPopupInlineErrorBackgroundId = 0; 6000 private int mPopupInlineErrorAboveBackgroundId = 0; 6001 6002 ErrorPopup(TextView v, int width, int height) { 6003 super(v, width, height); 6004 mView = v; 6005 // Make sure the TextView has a background set as it will be used the first time it is 6006 // shown and positioned. Initialized with below background, which should have 6007 // dimensions identical to the above version for this to work (and is more likely). 6008 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 6009 com.android.internal.R.styleable.Theme_errorMessageBackground); 6010 mView.setBackgroundResource(mPopupInlineErrorBackgroundId); 6011 } 6012 6013 void fixDirection(boolean above) { 6014 mAbove = above; 6015 6016 if (above) { 6017 mPopupInlineErrorAboveBackgroundId = 6018 getResourceId(mPopupInlineErrorAboveBackgroundId, 6019 com.android.internal.R.styleable.Theme_errorMessageAboveBackground); 6020 } else { 6021 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 6022 com.android.internal.R.styleable.Theme_errorMessageBackground); 6023 } 6024 6025 mView.setBackgroundResource( 6026 above ? mPopupInlineErrorAboveBackgroundId : mPopupInlineErrorBackgroundId); 6027 } 6028 6029 private int getResourceId(int currentId, int index) { 6030 if (currentId == 0) { 6031 TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( 6032 R.styleable.Theme); 6033 currentId = styledAttributes.getResourceId(index, 0); 6034 styledAttributes.recycle(); 6035 } 6036 return currentId; 6037 } 6038 6039 @Override 6040 public void update(int x, int y, int w, int h, boolean force) { 6041 super.update(x, y, w, h, force); 6042 6043 boolean above = isAboveAnchor(); 6044 if (above != mAbove) { 6045 fixDirection(above); 6046 } 6047 } 6048 } 6049 6050 static class InputContentType { 6051 int imeOptions = EditorInfo.IME_NULL; 6052 String privateImeOptions; 6053 CharSequence imeActionLabel; 6054 int imeActionId; 6055 Bundle extras; 6056 OnEditorActionListener onEditorActionListener; 6057 boolean enterDown; 6058 LocaleList imeHintLocales; 6059 } 6060 6061 static class InputMethodState { 6062 ExtractedTextRequest mExtractedTextRequest; 6063 final ExtractedText mExtractedText = new ExtractedText(); 6064 int mBatchEditNesting; 6065 boolean mCursorChanged; 6066 boolean mSelectionModeChanged; 6067 boolean mContentChanged; 6068 int mChangedStart, mChangedEnd, mChangedDelta; 6069 } 6070 6071 /** 6072 * @return True iff (start, end) is a valid range within the text. 6073 */ 6074 private static boolean isValidRange(CharSequence text, int start, int end) { 6075 return 0 <= start && start <= end && end <= text.length(); 6076 } 6077 6078 @VisibleForTesting 6079 public SuggestionsPopupWindow getSuggestionsPopupWindowForTesting() { 6080 return mSuggestionsPopupWindow; 6081 } 6082 6083 /** 6084 * An InputFilter that monitors text input to maintain undo history. It does not modify the 6085 * text being typed (and hence always returns null from the filter() method). 6086 * 6087 * TODO: Make this span aware. 6088 */ 6089 public static class UndoInputFilter implements InputFilter { 6090 private final Editor mEditor; 6091 6092 // Whether the current filter pass is directly caused by an end-user text edit. 6093 private boolean mIsUserEdit; 6094 6095 // Whether the text field is handling an IME composition. Must be parceled in case the user 6096 // rotates the screen during composition. 6097 private boolean mHasComposition; 6098 6099 // Whether the user is expanding or shortening the text 6100 private boolean mExpanding; 6101 6102 // Whether the previous edit operation was in the current batch edit. 6103 private boolean mPreviousOperationWasInSameBatchEdit; 6104 6105 public UndoInputFilter(Editor editor) { 6106 mEditor = editor; 6107 } 6108 6109 public void saveInstanceState(Parcel parcel) { 6110 parcel.writeInt(mIsUserEdit ? 1 : 0); 6111 parcel.writeInt(mHasComposition ? 1 : 0); 6112 parcel.writeInt(mExpanding ? 1 : 0); 6113 parcel.writeInt(mPreviousOperationWasInSameBatchEdit ? 1 : 0); 6114 } 6115 6116 public void restoreInstanceState(Parcel parcel) { 6117 mIsUserEdit = parcel.readInt() != 0; 6118 mHasComposition = parcel.readInt() != 0; 6119 mExpanding = parcel.readInt() != 0; 6120 mPreviousOperationWasInSameBatchEdit = parcel.readInt() != 0; 6121 } 6122 6123 /** 6124 * Signals that a user-triggered edit is starting. 6125 */ 6126 public void beginBatchEdit() { 6127 if (DEBUG_UNDO) Log.d(TAG, "beginBatchEdit"); 6128 mIsUserEdit = true; 6129 } 6130 6131 public void endBatchEdit() { 6132 if (DEBUG_UNDO) Log.d(TAG, "endBatchEdit"); 6133 mIsUserEdit = false; 6134 mPreviousOperationWasInSameBatchEdit = false; 6135 } 6136 6137 @Override 6138 public CharSequence filter(CharSequence source, int start, int end, 6139 Spanned dest, int dstart, int dend) { 6140 if (DEBUG_UNDO) { 6141 Log.d(TAG, "filter: source=" + source + " (" + start + "-" + end + ") " 6142 + "dest=" + dest + " (" + dstart + "-" + dend + ")"); 6143 } 6144 6145 // Check to see if this edit should be tracked for undo. 6146 if (!canUndoEdit(source, start, end, dest, dstart, dend)) { 6147 return null; 6148 } 6149 6150 final boolean hadComposition = mHasComposition; 6151 mHasComposition = isComposition(source); 6152 final boolean wasExpanding = mExpanding; 6153 boolean shouldCreateSeparateState = false; 6154 if ((end - start) != (dend - dstart)) { 6155 mExpanding = (end - start) > (dend - dstart); 6156 if (hadComposition && mExpanding != wasExpanding) { 6157 shouldCreateSeparateState = true; 6158 } 6159 } 6160 6161 // Handle edit. 6162 handleEdit(source, start, end, dest, dstart, dend, shouldCreateSeparateState); 6163 return null; 6164 } 6165 6166 void freezeLastEdit() { 6167 mEditor.mUndoManager.beginUpdate("Edit text"); 6168 EditOperation lastEdit = getLastEdit(); 6169 if (lastEdit != null) { 6170 lastEdit.mFrozen = true; 6171 } 6172 mEditor.mUndoManager.endUpdate(); 6173 } 6174 6175 @Retention(RetentionPolicy.SOURCE) 6176 @IntDef(prefix = { "MERGE_EDIT_MODE_" }, value = { 6177 MERGE_EDIT_MODE_FORCE_MERGE, 6178 MERGE_EDIT_MODE_NEVER_MERGE, 6179 MERGE_EDIT_MODE_NORMAL 6180 }) 6181 private @interface MergeMode {} 6182 private static final int MERGE_EDIT_MODE_FORCE_MERGE = 0; 6183 private static final int MERGE_EDIT_MODE_NEVER_MERGE = 1; 6184 /** Use {@link EditOperation#mergeWith} to merge */ 6185 private static final int MERGE_EDIT_MODE_NORMAL = 2; 6186 6187 private void handleEdit(CharSequence source, int start, int end, 6188 Spanned dest, int dstart, int dend, boolean shouldCreateSeparateState) { 6189 // An application may install a TextWatcher to provide additional modifications after 6190 // the initial input filters run (e.g. a credit card formatter that adds spaces to a 6191 // string). This results in multiple filter() calls for what the user considers to be 6192 // a single operation. Always undo the whole set of changes in one step. 6193 @MergeMode 6194 final int mergeMode; 6195 if (isInTextWatcher() || mPreviousOperationWasInSameBatchEdit) { 6196 mergeMode = MERGE_EDIT_MODE_FORCE_MERGE; 6197 } else if (shouldCreateSeparateState) { 6198 mergeMode = MERGE_EDIT_MODE_NEVER_MERGE; 6199 } else { 6200 mergeMode = MERGE_EDIT_MODE_NORMAL; 6201 } 6202 // Build a new operation with all the information from this edit. 6203 String newText = TextUtils.substring(source, start, end); 6204 String oldText = TextUtils.substring(dest, dstart, dend); 6205 EditOperation edit = new EditOperation(mEditor, oldText, dstart, newText, 6206 mHasComposition); 6207 if (mHasComposition && TextUtils.equals(edit.mNewText, edit.mOldText)) { 6208 return; 6209 } 6210 recordEdit(edit, mergeMode); 6211 } 6212 6213 private EditOperation getLastEdit() { 6214 final UndoManager um = mEditor.mUndoManager; 6215 return um.getLastOperation( 6216 EditOperation.class, mEditor.mUndoOwner, UndoManager.MERGE_MODE_UNIQUE); 6217 } 6218 /** 6219 * Fetches the last undo operation and checks to see if a new edit should be merged into it. 6220 * If forceMerge is true then the new edit is always merged. 6221 */ 6222 private void recordEdit(EditOperation edit, @MergeMode int mergeMode) { 6223 // Fetch the last edit operation and attempt to merge in the new edit. 6224 final UndoManager um = mEditor.mUndoManager; 6225 um.beginUpdate("Edit text"); 6226 EditOperation lastEdit = getLastEdit(); 6227 if (lastEdit == null) { 6228 // Add this as the first edit. 6229 if (DEBUG_UNDO) Log.d(TAG, "filter: adding first op " + edit); 6230 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 6231 } else if (mergeMode == MERGE_EDIT_MODE_FORCE_MERGE) { 6232 // Forced merges take priority because they could be the result of a non-user-edit 6233 // change and this case should not create a new undo operation. 6234 if (DEBUG_UNDO) Log.d(TAG, "filter: force merge " + edit); 6235 lastEdit.forceMergeWith(edit); 6236 } else if (!mIsUserEdit) { 6237 // An application directly modified the Editable outside of a text edit. Treat this 6238 // as a new change and don't attempt to merge. 6239 if (DEBUG_UNDO) Log.d(TAG, "non-user edit, new op " + edit); 6240 um.commitState(mEditor.mUndoOwner); 6241 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 6242 } else if (mergeMode == MERGE_EDIT_MODE_NORMAL && lastEdit.mergeWith(edit)) { 6243 // Merge succeeded, nothing else to do. 6244 if (DEBUG_UNDO) Log.d(TAG, "filter: merge succeeded, created " + lastEdit); 6245 } else { 6246 // Could not merge with the last edit, so commit the last edit and add this edit. 6247 if (DEBUG_UNDO) Log.d(TAG, "filter: merge failed, adding " + edit); 6248 um.commitState(mEditor.mUndoOwner); 6249 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 6250 } 6251 mPreviousOperationWasInSameBatchEdit = mIsUserEdit; 6252 um.endUpdate(); 6253 } 6254 6255 private boolean canUndoEdit(CharSequence source, int start, int end, 6256 Spanned dest, int dstart, int dend) { 6257 if (!mEditor.mAllowUndo) { 6258 if (DEBUG_UNDO) Log.d(TAG, "filter: undo is disabled"); 6259 return false; 6260 } 6261 6262 if (mEditor.mUndoManager.isInUndo()) { 6263 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping, currently performing undo/redo"); 6264 return false; 6265 } 6266 6267 // Text filters run before input operations are applied. However, some input operations 6268 // are invalid and will throw exceptions when applied. This is common in tests. Don't 6269 // attempt to undo invalid operations. 6270 if (!isValidRange(source, start, end) || !isValidRange(dest, dstart, dend)) { 6271 if (DEBUG_UNDO) Log.d(TAG, "filter: invalid op"); 6272 return false; 6273 } 6274 6275 // Earlier filters can rewrite input to be a no-op, for example due to a length limit 6276 // on an input field. Skip no-op changes. 6277 if (start == end && dstart == dend) { 6278 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping no-op"); 6279 return false; 6280 } 6281 6282 return true; 6283 } 6284 6285 private static boolean isComposition(CharSequence source) { 6286 if (!(source instanceof Spannable)) { 6287 return false; 6288 } 6289 // This is a composition edit if the source has a non-zero-length composing span. 6290 Spannable text = (Spannable) source; 6291 int composeBegin = EditableInputConnection.getComposingSpanStart(text); 6292 int composeEnd = EditableInputConnection.getComposingSpanEnd(text); 6293 return composeBegin < composeEnd; 6294 } 6295 6296 private boolean isInTextWatcher() { 6297 CharSequence text = mEditor.mTextView.getText(); 6298 return (text instanceof SpannableStringBuilder) 6299 && ((SpannableStringBuilder) text).getTextWatcherDepth() > 0; 6300 } 6301 } 6302 6303 /** 6304 * An operation to undo a single "edit" to a text view. 6305 */ 6306 public static class EditOperation extends UndoOperation<Editor> { 6307 private static final int TYPE_INSERT = 0; 6308 private static final int TYPE_DELETE = 1; 6309 private static final int TYPE_REPLACE = 2; 6310 6311 private int mType; 6312 private String mOldText; 6313 private String mNewText; 6314 private int mStart; 6315 6316 private int mOldCursorPos; 6317 private int mNewCursorPos; 6318 private boolean mFrozen; 6319 private boolean mIsComposition; 6320 6321 /** 6322 * Constructs an edit operation from a text input operation on editor that replaces the 6323 * oldText starting at dstart with newText. 6324 */ 6325 public EditOperation(Editor editor, String oldText, int dstart, String newText, 6326 boolean isComposition) { 6327 super(editor.mUndoOwner); 6328 mOldText = oldText; 6329 mNewText = newText; 6330 6331 // Determine the type of the edit. 6332 if (mNewText.length() > 0 && mOldText.length() == 0) { 6333 mType = TYPE_INSERT; 6334 } else if (mNewText.length() == 0 && mOldText.length() > 0) { 6335 mType = TYPE_DELETE; 6336 } else { 6337 mType = TYPE_REPLACE; 6338 } 6339 6340 mStart = dstart; 6341 // Store cursor data. 6342 mOldCursorPos = editor.mTextView.getSelectionStart(); 6343 mNewCursorPos = dstart + mNewText.length(); 6344 mIsComposition = isComposition; 6345 } 6346 6347 public EditOperation(Parcel src, ClassLoader loader) { 6348 super(src, loader); 6349 mType = src.readInt(); 6350 mOldText = src.readString(); 6351 mNewText = src.readString(); 6352 mStart = src.readInt(); 6353 mOldCursorPos = src.readInt(); 6354 mNewCursorPos = src.readInt(); 6355 mFrozen = src.readInt() == 1; 6356 mIsComposition = src.readInt() == 1; 6357 } 6358 6359 @Override 6360 public void writeToParcel(Parcel dest, int flags) { 6361 dest.writeInt(mType); 6362 dest.writeString(mOldText); 6363 dest.writeString(mNewText); 6364 dest.writeInt(mStart); 6365 dest.writeInt(mOldCursorPos); 6366 dest.writeInt(mNewCursorPos); 6367 dest.writeInt(mFrozen ? 1 : 0); 6368 dest.writeInt(mIsComposition ? 1 : 0); 6369 } 6370 6371 private int getNewTextEnd() { 6372 return mStart + mNewText.length(); 6373 } 6374 6375 private int getOldTextEnd() { 6376 return mStart + mOldText.length(); 6377 } 6378 6379 @Override 6380 public void commit() { 6381 } 6382 6383 @Override 6384 public void undo() { 6385 if (DEBUG_UNDO) Log.d(TAG, "undo"); 6386 // Remove the new text and insert the old. 6387 Editor editor = getOwnerData(); 6388 Editable text = (Editable) editor.mTextView.getText(); 6389 modifyText(text, mStart, getNewTextEnd(), mOldText, mStart, mOldCursorPos); 6390 } 6391 6392 @Override 6393 public void redo() { 6394 if (DEBUG_UNDO) Log.d(TAG, "redo"); 6395 // Remove the old text and insert the new. 6396 Editor editor = getOwnerData(); 6397 Editable text = (Editable) editor.mTextView.getText(); 6398 modifyText(text, mStart, getOldTextEnd(), mNewText, mStart, mNewCursorPos); 6399 } 6400 6401 /** 6402 * Attempts to merge this existing operation with a new edit. 6403 * @param edit The new edit operation. 6404 * @return If the merge succeeded, returns true. Otherwise returns false and leaves this 6405 * object unchanged. 6406 */ 6407 private boolean mergeWith(EditOperation edit) { 6408 if (DEBUG_UNDO) { 6409 Log.d(TAG, "mergeWith old " + this); 6410 Log.d(TAG, "mergeWith new " + edit); 6411 } 6412 6413 if (mFrozen) { 6414 return false; 6415 } 6416 6417 switch (mType) { 6418 case TYPE_INSERT: 6419 return mergeInsertWith(edit); 6420 case TYPE_DELETE: 6421 return mergeDeleteWith(edit); 6422 case TYPE_REPLACE: 6423 return mergeReplaceWith(edit); 6424 default: 6425 return false; 6426 } 6427 } 6428 6429 private boolean mergeInsertWith(EditOperation edit) { 6430 if (edit.mType == TYPE_INSERT) { 6431 // Merge insertions that are contiguous even when it's frozen. 6432 if (getNewTextEnd() != edit.mStart) { 6433 return false; 6434 } 6435 mNewText += edit.mNewText; 6436 mNewCursorPos = edit.mNewCursorPos; 6437 mFrozen = edit.mFrozen; 6438 mIsComposition = edit.mIsComposition; 6439 return true; 6440 } 6441 if (mIsComposition && edit.mType == TYPE_REPLACE 6442 && mStart <= edit.mStart && getNewTextEnd() >= edit.getOldTextEnd()) { 6443 // Merge insertion with replace as they can be single insertion. 6444 mNewText = mNewText.substring(0, edit.mStart - mStart) + edit.mNewText 6445 + mNewText.substring(edit.getOldTextEnd() - mStart, mNewText.length()); 6446 mNewCursorPos = edit.mNewCursorPos; 6447 mIsComposition = edit.mIsComposition; 6448 return true; 6449 } 6450 return false; 6451 } 6452 6453 // TODO: Support forward delete. 6454 private boolean mergeDeleteWith(EditOperation edit) { 6455 // Only merge continuous deletes. 6456 if (edit.mType != TYPE_DELETE) { 6457 return false; 6458 } 6459 // Only merge deletions that are contiguous. 6460 if (mStart != edit.getOldTextEnd()) { 6461 return false; 6462 } 6463 mStart = edit.mStart; 6464 mOldText = edit.mOldText + mOldText; 6465 mNewCursorPos = edit.mNewCursorPos; 6466 mIsComposition = edit.mIsComposition; 6467 return true; 6468 } 6469 6470 private boolean mergeReplaceWith(EditOperation edit) { 6471 if (edit.mType == TYPE_INSERT && getNewTextEnd() == edit.mStart) { 6472 // Merge with adjacent insert. 6473 mNewText += edit.mNewText; 6474 mNewCursorPos = edit.mNewCursorPos; 6475 return true; 6476 } 6477 if (!mIsComposition) { 6478 return false; 6479 } 6480 if (edit.mType == TYPE_DELETE && mStart <= edit.mStart 6481 && getNewTextEnd() >= edit.getOldTextEnd()) { 6482 // Merge with delete as they can be single operation. 6483 mNewText = mNewText.substring(0, edit.mStart - mStart) 6484 + mNewText.substring(edit.getOldTextEnd() - mStart, mNewText.length()); 6485 if (mNewText.isEmpty()) { 6486 mType = TYPE_DELETE; 6487 } 6488 mNewCursorPos = edit.mNewCursorPos; 6489 mIsComposition = edit.mIsComposition; 6490 return true; 6491 } 6492 if (edit.mType == TYPE_REPLACE && mStart == edit.mStart 6493 && TextUtils.equals(mNewText, edit.mOldText)) { 6494 // Merge with the replace that replaces the same region. 6495 mNewText = edit.mNewText; 6496 mNewCursorPos = edit.mNewCursorPos; 6497 mIsComposition = edit.mIsComposition; 6498 return true; 6499 } 6500 return false; 6501 } 6502 6503 /** 6504 * Forcibly creates a single merged edit operation by simulating the entire text 6505 * contents being replaced. 6506 */ 6507 public void forceMergeWith(EditOperation edit) { 6508 if (DEBUG_UNDO) Log.d(TAG, "forceMerge"); 6509 if (mergeWith(edit)) { 6510 return; 6511 } 6512 Editor editor = getOwnerData(); 6513 6514 // Copy the text of the current field. 6515 // NOTE: Using StringBuilder instead of SpannableStringBuilder would be somewhat faster, 6516 // but would require two parallel implementations of modifyText() because Editable and 6517 // StringBuilder do not share an interface for replace/delete/insert. 6518 Editable editable = (Editable) editor.mTextView.getText(); 6519 Editable originalText = new SpannableStringBuilder(editable.toString()); 6520 6521 // Roll back the last operation. 6522 modifyText(originalText, mStart, getNewTextEnd(), mOldText, mStart, mOldCursorPos); 6523 6524 // Clone the text again and apply the new operation. 6525 Editable finalText = new SpannableStringBuilder(editable.toString()); 6526 modifyText(finalText, edit.mStart, edit.getOldTextEnd(), 6527 edit.mNewText, edit.mStart, edit.mNewCursorPos); 6528 6529 // Convert this operation into a replace operation. 6530 mType = TYPE_REPLACE; 6531 mNewText = finalText.toString(); 6532 mOldText = originalText.toString(); 6533 mStart = 0; 6534 mNewCursorPos = edit.mNewCursorPos; 6535 mIsComposition = edit.mIsComposition; 6536 // mOldCursorPos is unchanged. 6537 } 6538 6539 private static void modifyText(Editable text, int deleteFrom, int deleteTo, 6540 CharSequence newText, int newTextInsertAt, int newCursorPos) { 6541 // Apply the edit if it is still valid. 6542 if (isValidRange(text, deleteFrom, deleteTo) 6543 && newTextInsertAt <= text.length() - (deleteTo - deleteFrom)) { 6544 if (deleteFrom != deleteTo) { 6545 text.delete(deleteFrom, deleteTo); 6546 } 6547 if (newText.length() != 0) { 6548 text.insert(newTextInsertAt, newText); 6549 } 6550 } 6551 // Restore the cursor position. If there wasn't an old cursor (newCursorPos == -1) then 6552 // don't explicitly set it and rely on SpannableStringBuilder to position it. 6553 // TODO: Select all the text that was undone. 6554 if (0 <= newCursorPos && newCursorPos <= text.length()) { 6555 Selection.setSelection(text, newCursorPos); 6556 } 6557 } 6558 6559 private String getTypeString() { 6560 switch (mType) { 6561 case TYPE_INSERT: 6562 return "insert"; 6563 case TYPE_DELETE: 6564 return "delete"; 6565 case TYPE_REPLACE: 6566 return "replace"; 6567 default: 6568 return ""; 6569 } 6570 } 6571 6572 @Override 6573 public String toString() { 6574 return "[mType=" + getTypeString() + ", " 6575 + "mOldText=" + mOldText + ", " 6576 + "mNewText=" + mNewText + ", " 6577 + "mStart=" + mStart + ", " 6578 + "mOldCursorPos=" + mOldCursorPos + ", " 6579 + "mNewCursorPos=" + mNewCursorPos + ", " 6580 + "mFrozen=" + mFrozen + ", " 6581 + "mIsComposition=" + mIsComposition + "]"; 6582 } 6583 6584 public static final Parcelable.ClassLoaderCreator<EditOperation> CREATOR = 6585 new Parcelable.ClassLoaderCreator<EditOperation>() { 6586 @Override 6587 public EditOperation createFromParcel(Parcel in) { 6588 return new EditOperation(in, null); 6589 } 6590 6591 @Override 6592 public EditOperation createFromParcel(Parcel in, ClassLoader loader) { 6593 return new EditOperation(in, loader); 6594 } 6595 6596 @Override 6597 public EditOperation[] newArray(int size) { 6598 return new EditOperation[size]; 6599 } 6600 }; 6601 } 6602 6603 /** 6604 * A helper for enabling and handling "PROCESS_TEXT" menu actions. 6605 * These allow external applications to plug into currently selected text. 6606 */ 6607 static final class ProcessTextIntentActionsHandler { 6608 6609 private final Editor mEditor; 6610 private final TextView mTextView; 6611 private final Context mContext; 6612 private final PackageManager mPackageManager; 6613 private final String mPackageName; 6614 private final SparseArray<Intent> mAccessibilityIntents = new SparseArray<>(); 6615 private final SparseArray<AccessibilityNodeInfo.AccessibilityAction> mAccessibilityActions = 6616 new SparseArray<>(); 6617 private final List<ResolveInfo> mSupportedActivities = new ArrayList<>(); 6618 6619 private ProcessTextIntentActionsHandler(Editor editor) { 6620 mEditor = Preconditions.checkNotNull(editor); 6621 mTextView = Preconditions.checkNotNull(mEditor.mTextView); 6622 mContext = Preconditions.checkNotNull(mTextView.getContext()); 6623 mPackageManager = Preconditions.checkNotNull(mContext.getPackageManager()); 6624 mPackageName = Preconditions.checkNotNull(mContext.getPackageName()); 6625 } 6626 6627 /** 6628 * Adds "PROCESS_TEXT" menu items to the specified menu. 6629 */ 6630 public void onInitializeMenu(Menu menu) { 6631 loadSupportedActivities(); 6632 final int size = mSupportedActivities.size(); 6633 for (int i = 0; i < size; i++) { 6634 final ResolveInfo resolveInfo = mSupportedActivities.get(i); 6635 menu.add(Menu.NONE, Menu.NONE, 6636 Editor.MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START + i, 6637 getLabel(resolveInfo)) 6638 .setIntent(createProcessTextIntentForResolveInfo(resolveInfo)) 6639 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 6640 } 6641 } 6642 6643 /** 6644 * Performs a "PROCESS_TEXT" action if there is one associated with the specified 6645 * menu item. 6646 * 6647 * @return True if the action was performed, false otherwise. 6648 */ 6649 public boolean performMenuItemAction(MenuItem item) { 6650 return fireIntent(item.getIntent()); 6651 } 6652 6653 /** 6654 * Initializes and caches "PROCESS_TEXT" accessibility actions. 6655 */ 6656 public void initializeAccessibilityActions() { 6657 mAccessibilityIntents.clear(); 6658 mAccessibilityActions.clear(); 6659 int i = 0; 6660 loadSupportedActivities(); 6661 for (ResolveInfo resolveInfo : mSupportedActivities) { 6662 int actionId = TextView.ACCESSIBILITY_ACTION_PROCESS_TEXT_START_ID + i++; 6663 mAccessibilityActions.put( 6664 actionId, 6665 new AccessibilityNodeInfo.AccessibilityAction( 6666 actionId, getLabel(resolveInfo))); 6667 mAccessibilityIntents.put( 6668 actionId, createProcessTextIntentForResolveInfo(resolveInfo)); 6669 } 6670 } 6671 6672 /** 6673 * Adds "PROCESS_TEXT" accessibility actions to the specified accessibility node info. 6674 * NOTE: This needs a prior call to {@link #initializeAccessibilityActions()} to make the 6675 * latest accessibility actions available for this call. 6676 */ 6677 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo nodeInfo) { 6678 for (int i = 0; i < mAccessibilityActions.size(); i++) { 6679 nodeInfo.addAction(mAccessibilityActions.valueAt(i)); 6680 } 6681 } 6682 6683 /** 6684 * Performs a "PROCESS_TEXT" action if there is one associated with the specified 6685 * accessibility action id. 6686 * 6687 * @return True if the action was performed, false otherwise. 6688 */ 6689 public boolean performAccessibilityAction(int actionId) { 6690 return fireIntent(mAccessibilityIntents.get(actionId)); 6691 } 6692 6693 private boolean fireIntent(Intent intent) { 6694 if (intent != null && Intent.ACTION_PROCESS_TEXT.equals(intent.getAction())) { 6695 String selectedText = mTextView.getSelectedText(); 6696 selectedText = TextUtils.trimToParcelableSize(selectedText); 6697 intent.putExtra(Intent.EXTRA_PROCESS_TEXT, selectedText); 6698 mEditor.mPreserveSelection = true; 6699 mTextView.startActivityForResult(intent, TextView.PROCESS_TEXT_REQUEST_CODE); 6700 return true; 6701 } 6702 return false; 6703 } 6704 6705 private void loadSupportedActivities() { 6706 mSupportedActivities.clear(); 6707 if (!mContext.canStartActivityForResult()) { 6708 return; 6709 } 6710 PackageManager packageManager = mTextView.getContext().getPackageManager(); 6711 List<ResolveInfo> unfiltered = 6712 packageManager.queryIntentActivities(createProcessTextIntent(), 0); 6713 for (ResolveInfo info : unfiltered) { 6714 if (isSupportedActivity(info)) { 6715 mSupportedActivities.add(info); 6716 } 6717 } 6718 } 6719 6720 private boolean isSupportedActivity(ResolveInfo info) { 6721 return mPackageName.equals(info.activityInfo.packageName) 6722 || info.activityInfo.exported 6723 && (info.activityInfo.permission == null 6724 || mContext.checkSelfPermission(info.activityInfo.permission) 6725 == PackageManager.PERMISSION_GRANTED); 6726 } 6727 6728 private Intent createProcessTextIntentForResolveInfo(ResolveInfo info) { 6729 return createProcessTextIntent() 6730 .putExtra(Intent.EXTRA_PROCESS_TEXT_READONLY, !mTextView.isTextEditable()) 6731 .setClassName(info.activityInfo.packageName, info.activityInfo.name); 6732 } 6733 6734 private Intent createProcessTextIntent() { 6735 return new Intent() 6736 .setAction(Intent.ACTION_PROCESS_TEXT) 6737 .setType("text/plain"); 6738 } 6739 6740 private CharSequence getLabel(ResolveInfo resolveInfo) { 6741 return resolveInfo.loadLabel(mPackageManager); 6742 } 6743 } 6744} 6745