Editor.java revision fdbc5ee7630d7454f0f18addadcd51493f10998a
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 long mShowCursor; 266 private Blink mBlink; 267 268 boolean mCursorVisible = true; 269 boolean mSelectAllOnFocus; 270 boolean mTextIsSelectable; 271 272 CharSequence mError; 273 boolean mErrorWasChanged; 274 private ErrorPopup mErrorPopup; 275 276 /** 277 * This flag is set if the TextView tries to display an error before it 278 * is attached to the window (so its position is still unknown). 279 * It causes the error to be shown later, when onAttachedToWindow() 280 * is called. 281 */ 282 private boolean mShowErrorAfterAttach; 283 284 boolean mInBatchEditControllers; 285 boolean mShowSoftInputOnFocus = true; 286 private boolean mPreserveSelection; 287 private boolean mRestartActionModeOnNextRefresh; 288 289 private SelectionActionModeHelper mSelectionActionModeHelper; 290 291 boolean mIsBeingLongClicked; 292 293 private SuggestionsPopupWindow mSuggestionsPopupWindow; 294 SuggestionRangeSpan mSuggestionRangeSpan; 295 private Runnable mShowSuggestionRunnable; 296 297 Drawable mDrawableForCursor = null; 298 299 private Drawable mSelectHandleLeft; 300 private Drawable mSelectHandleRight; 301 private Drawable mSelectHandleCenter; 302 303 // Global listener that detects changes in the global position of the TextView 304 private PositionListener mPositionListener; 305 306 private float mLastDownPositionX, mLastDownPositionY; 307 private float mLastUpPositionX, mLastUpPositionY; 308 private float mContextMenuAnchorX, mContextMenuAnchorY; 309 Callback mCustomSelectionActionModeCallback; 310 Callback mCustomInsertionActionModeCallback; 311 312 // Set when this TextView gained focus with some text selected. Will start selection mode. 313 boolean mCreatedWithASelection; 314 315 // Indicates the current tap state (first tap, double tap, or triple click). 316 private int mTapState = TAP_STATE_INITIAL; 317 private long mLastTouchUpTime = 0; 318 private static final int TAP_STATE_INITIAL = 0; 319 private static final int TAP_STATE_FIRST_TAP = 1; 320 private static final int TAP_STATE_DOUBLE_TAP = 2; 321 // Only for mouse input. 322 private static final int TAP_STATE_TRIPLE_CLICK = 3; 323 324 // The button state as of the last time #onTouchEvent is called. 325 private int mLastButtonState; 326 327 private Runnable mInsertionActionModeRunnable; 328 329 // The span controller helps monitoring the changes to which the Editor needs to react: 330 // - EasyEditSpans, for which we have some UI to display on attach and on hide 331 // - SelectionSpans, for which we need to call updateSelection if an IME is attached 332 private SpanController mSpanController; 333 334 private WordIterator mWordIterator; 335 SpellChecker mSpellChecker; 336 337 // This word iterator is set with text and used to determine word boundaries 338 // when a user is selecting text. 339 private WordIterator mWordIteratorWithText; 340 // Indicate that the text in the word iterator needs to be updated. 341 private boolean mUpdateWordIteratorText; 342 343 private Rect mTempRect; 344 345 private final TextView mTextView; 346 347 final ProcessTextIntentActionsHandler mProcessTextIntentActionsHandler; 348 349 private final CursorAnchorInfoNotifier mCursorAnchorInfoNotifier = 350 new CursorAnchorInfoNotifier(); 351 352 private final Runnable mShowFloatingToolbar = new Runnable() { 353 @Override 354 public void run() { 355 if (mTextActionMode != null) { 356 mTextActionMode.hide(0); // hide off. 357 } 358 } 359 }; 360 361 boolean mIsInsertionActionModeStartPending = false; 362 363 private final SuggestionHelper mSuggestionHelper = new SuggestionHelper(); 364 365 Editor(TextView textView) { 366 mTextView = textView; 367 // Synchronize the filter list, which places the undo input filter at the end. 368 mTextView.setFilters(mTextView.getFilters()); 369 mProcessTextIntentActionsHandler = new ProcessTextIntentActionsHandler(this); 370 mHapticTextHandleEnabled = mTextView.getContext().getResources().getBoolean( 371 com.android.internal.R.bool.config_enableHapticTextHandle); 372 373 mMagnifier = FLAG_USE_MAGNIFIER ? new Magnifier(mTextView) : null; 374 } 375 376 ParcelableParcel saveInstanceState() { 377 ParcelableParcel state = new ParcelableParcel(getClass().getClassLoader()); 378 Parcel parcel = state.getParcel(); 379 mUndoManager.saveInstanceState(parcel); 380 mUndoInputFilter.saveInstanceState(parcel); 381 return state; 382 } 383 384 void restoreInstanceState(ParcelableParcel state) { 385 Parcel parcel = state.getParcel(); 386 mUndoManager.restoreInstanceState(parcel, state.getClassLoader()); 387 mUndoInputFilter.restoreInstanceState(parcel); 388 // Re-associate this object as the owner of undo state. 389 mUndoOwner = mUndoManager.getOwner(UNDO_OWNER_TAG, this); 390 } 391 392 /** 393 * Forgets all undo and redo operations for this Editor. 394 */ 395 void forgetUndoRedo() { 396 UndoOwner[] owners = { mUndoOwner }; 397 mUndoManager.forgetUndos(owners, -1 /* all */); 398 mUndoManager.forgetRedos(owners, -1 /* all */); 399 } 400 401 boolean canUndo() { 402 UndoOwner[] owners = { mUndoOwner }; 403 return mAllowUndo && mUndoManager.countUndos(owners) > 0; 404 } 405 406 boolean canRedo() { 407 UndoOwner[] owners = { mUndoOwner }; 408 return mAllowUndo && mUndoManager.countRedos(owners) > 0; 409 } 410 411 void undo() { 412 if (!mAllowUndo) { 413 return; 414 } 415 UndoOwner[] owners = { mUndoOwner }; 416 mUndoManager.undo(owners, 1); // Undo 1 action. 417 } 418 419 void redo() { 420 if (!mAllowUndo) { 421 return; 422 } 423 UndoOwner[] owners = { mUndoOwner }; 424 mUndoManager.redo(owners, 1); // Redo 1 action. 425 } 426 427 void replace() { 428 if (mSuggestionsPopupWindow == null) { 429 mSuggestionsPopupWindow = new SuggestionsPopupWindow(); 430 } 431 hideCursorAndSpanControllers(); 432 mSuggestionsPopupWindow.show(); 433 434 int middle = (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 435 Selection.setSelection((Spannable) mTextView.getText(), middle); 436 } 437 438 void onAttachedToWindow() { 439 if (mShowErrorAfterAttach) { 440 showError(); 441 mShowErrorAfterAttach = false; 442 } 443 444 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 445 if (observer.isAlive()) { 446 // No need to create the controller. 447 // The get method will add the listener on controller creation. 448 if (mInsertionPointCursorController != null) { 449 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 450 } 451 if (mSelectionModifierCursorController != null) { 452 mSelectionModifierCursorController.resetTouchOffsets(); 453 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 454 } 455 if (FLAG_USE_MAGNIFIER) { 456 observer.addOnDrawListener(mMagnifierOnDrawListener); 457 } 458 } 459 460 updateSpellCheckSpans(0, mTextView.getText().length(), 461 true /* create the spell checker if needed */); 462 463 if (mTextView.hasSelection()) { 464 refreshTextActionMode(); 465 } 466 467 getPositionListener().addSubscriber(mCursorAnchorInfoNotifier, true); 468 resumeBlink(); 469 } 470 471 void onDetachedFromWindow() { 472 getPositionListener().removeSubscriber(mCursorAnchorInfoNotifier); 473 474 if (mError != null) { 475 hideError(); 476 } 477 478 suspendBlink(); 479 480 if (mInsertionPointCursorController != null) { 481 mInsertionPointCursorController.onDetached(); 482 } 483 484 if (mSelectionModifierCursorController != null) { 485 mSelectionModifierCursorController.onDetached(); 486 } 487 488 if (mShowSuggestionRunnable != null) { 489 mTextView.removeCallbacks(mShowSuggestionRunnable); 490 } 491 492 // Cancel the single tap delayed runnable. 493 if (mInsertionActionModeRunnable != null) { 494 mTextView.removeCallbacks(mInsertionActionModeRunnable); 495 } 496 497 mTextView.removeCallbacks(mShowFloatingToolbar); 498 499 discardTextDisplayLists(); 500 501 if (mSpellChecker != null) { 502 mSpellChecker.closeSession(); 503 // Forces the creation of a new SpellChecker next time this window is created. 504 // Will handle the cases where the settings has been changed in the meantime. 505 mSpellChecker = null; 506 } 507 508 if (FLAG_USE_MAGNIFIER) { 509 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 510 if (observer.isAlive()) { 511 observer.removeOnDrawListener(mMagnifierOnDrawListener); 512 } 513 } 514 515 hideCursorAndSpanControllers(); 516 stopTextActionModeWithPreservingSelection(); 517 } 518 519 private void discardTextDisplayLists() { 520 if (mTextRenderNodes != null) { 521 for (int i = 0; i < mTextRenderNodes.length; i++) { 522 RenderNode displayList = mTextRenderNodes[i] != null 523 ? mTextRenderNodes[i].renderNode : null; 524 if (displayList != null && displayList.isValid()) { 525 displayList.discardDisplayList(); 526 } 527 } 528 } 529 } 530 531 private void showError() { 532 if (mTextView.getWindowToken() == null) { 533 mShowErrorAfterAttach = true; 534 return; 535 } 536 537 if (mErrorPopup == null) { 538 LayoutInflater inflater = LayoutInflater.from(mTextView.getContext()); 539 final TextView err = (TextView) inflater.inflate( 540 com.android.internal.R.layout.textview_hint, null); 541 542 final float scale = mTextView.getResources().getDisplayMetrics().density; 543 mErrorPopup = 544 new ErrorPopup(err, (int) (200 * scale + 0.5f), (int) (50 * scale + 0.5f)); 545 mErrorPopup.setFocusable(false); 546 // The user is entering text, so the input method is needed. We 547 // don't want the popup to be displayed on top of it. 548 mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); 549 } 550 551 TextView tv = (TextView) mErrorPopup.getContentView(); 552 chooseSize(mErrorPopup, mError, tv); 553 tv.setText(mError); 554 555 mErrorPopup.showAsDropDown(mTextView, getErrorX(), getErrorY(), 556 Gravity.TOP | Gravity.LEFT); 557 mErrorPopup.fixDirection(mErrorPopup.isAboveAnchor()); 558 } 559 560 public void setError(CharSequence error, Drawable icon) { 561 mError = TextUtils.stringOrSpannedString(error); 562 mErrorWasChanged = true; 563 564 if (mError == null) { 565 setErrorIcon(null); 566 if (mErrorPopup != null) { 567 if (mErrorPopup.isShowing()) { 568 mErrorPopup.dismiss(); 569 } 570 571 mErrorPopup = null; 572 } 573 mShowErrorAfterAttach = false; 574 } else { 575 setErrorIcon(icon); 576 if (mTextView.isFocused()) { 577 showError(); 578 } 579 } 580 } 581 582 private void setErrorIcon(Drawable icon) { 583 Drawables dr = mTextView.mDrawables; 584 if (dr == null) { 585 mTextView.mDrawables = dr = new Drawables(mTextView.getContext()); 586 } 587 dr.setErrorDrawable(icon, mTextView); 588 589 mTextView.resetResolvedDrawables(); 590 mTextView.invalidate(); 591 mTextView.requestLayout(); 592 } 593 594 private void hideError() { 595 if (mErrorPopup != null) { 596 if (mErrorPopup.isShowing()) { 597 mErrorPopup.dismiss(); 598 } 599 } 600 601 mShowErrorAfterAttach = false; 602 } 603 604 /** 605 * Returns the X offset to make the pointy top of the error point 606 * at the middle of the error icon. 607 */ 608 private int getErrorX() { 609 /* 610 * The "25" is the distance between the point and the right edge 611 * of the background 612 */ 613 final float scale = mTextView.getResources().getDisplayMetrics().density; 614 615 final Drawables dr = mTextView.mDrawables; 616 617 final int layoutDirection = mTextView.getLayoutDirection(); 618 int errorX; 619 int offset; 620 switch (layoutDirection) { 621 default: 622 case View.LAYOUT_DIRECTION_LTR: 623 offset = -(dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f); 624 errorX = mTextView.getWidth() - mErrorPopup.getWidth() 625 - mTextView.getPaddingRight() + offset; 626 break; 627 case View.LAYOUT_DIRECTION_RTL: 628 offset = (dr != null ? dr.mDrawableSizeLeft : 0) / 2 - (int) (25 * scale + 0.5f); 629 errorX = mTextView.getPaddingLeft() + offset; 630 break; 631 } 632 return errorX; 633 } 634 635 /** 636 * Returns the Y offset to make the pointy top of the error point 637 * at the bottom of the error icon. 638 */ 639 private int getErrorY() { 640 /* 641 * Compound, not extended, because the icon is not clipped 642 * if the text height is smaller. 643 */ 644 final int compoundPaddingTop = mTextView.getCompoundPaddingTop(); 645 int vspace = mTextView.getBottom() - mTextView.getTop() 646 - mTextView.getCompoundPaddingBottom() - compoundPaddingTop; 647 648 final Drawables dr = mTextView.mDrawables; 649 650 final int layoutDirection = mTextView.getLayoutDirection(); 651 int height; 652 switch (layoutDirection) { 653 default: 654 case View.LAYOUT_DIRECTION_LTR: 655 height = (dr != null ? dr.mDrawableHeightRight : 0); 656 break; 657 case View.LAYOUT_DIRECTION_RTL: 658 height = (dr != null ? dr.mDrawableHeightLeft : 0); 659 break; 660 } 661 662 int icontop = compoundPaddingTop + (vspace - height) / 2; 663 664 /* 665 * The "2" is the distance between the point and the top edge 666 * of the background. 667 */ 668 final float scale = mTextView.getResources().getDisplayMetrics().density; 669 return icontop + height - mTextView.getHeight() - (int) (2 * scale + 0.5f); 670 } 671 672 void createInputContentTypeIfNeeded() { 673 if (mInputContentType == null) { 674 mInputContentType = new InputContentType(); 675 } 676 } 677 678 void createInputMethodStateIfNeeded() { 679 if (mInputMethodState == null) { 680 mInputMethodState = new InputMethodState(); 681 } 682 } 683 684 boolean isCursorVisible() { 685 // The default value is true, even when there is no associated Editor 686 return mCursorVisible && mTextView.isTextEditable(); 687 } 688 689 void prepareCursorControllers() { 690 boolean windowSupportsHandles = false; 691 692 ViewGroup.LayoutParams params = mTextView.getRootView().getLayoutParams(); 693 if (params instanceof WindowManager.LayoutParams) { 694 WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params; 695 windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW 696 || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW; 697 } 698 699 boolean enabled = windowSupportsHandles && mTextView.getLayout() != null; 700 mInsertionControllerEnabled = enabled && isCursorVisible(); 701 mSelectionControllerEnabled = enabled && mTextView.textCanBeSelected(); 702 703 if (!mInsertionControllerEnabled) { 704 hideInsertionPointCursorController(); 705 if (mInsertionPointCursorController != null) { 706 mInsertionPointCursorController.onDetached(); 707 mInsertionPointCursorController = null; 708 } 709 } 710 711 if (!mSelectionControllerEnabled) { 712 stopTextActionMode(); 713 if (mSelectionModifierCursorController != null) { 714 mSelectionModifierCursorController.onDetached(); 715 mSelectionModifierCursorController = null; 716 } 717 } 718 } 719 720 void hideInsertionPointCursorController() { 721 if (mInsertionPointCursorController != null) { 722 mInsertionPointCursorController.hide(); 723 } 724 } 725 726 /** 727 * Hides the insertion and span controllers. 728 */ 729 void hideCursorAndSpanControllers() { 730 hideCursorControllers(); 731 hideSpanControllers(); 732 } 733 734 private void hideSpanControllers() { 735 if (mSpanController != null) { 736 mSpanController.hide(); 737 } 738 } 739 740 private void hideCursorControllers() { 741 // When mTextView is not ExtractEditText, we need to distinguish two kinds of focus-lost. 742 // One is the true focus lost where suggestions pop-up (if any) should be dismissed, and the 743 // other is an side effect of showing the suggestions pop-up itself. We use isShowingUp() 744 // to distinguish one from the other. 745 if (mSuggestionsPopupWindow != null && ((mTextView.isInExtractedMode()) 746 || !mSuggestionsPopupWindow.isShowingUp())) { 747 // Should be done before hide insertion point controller since it triggers a show of it 748 mSuggestionsPopupWindow.hide(); 749 } 750 hideInsertionPointCursorController(); 751 } 752 753 /** 754 * Create new SpellCheckSpans on the modified region. 755 */ 756 private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) { 757 // Remove spans whose adjacent characters are text not punctuation 758 mTextView.removeAdjacentSuggestionSpans(start); 759 mTextView.removeAdjacentSuggestionSpans(end); 760 761 if (mTextView.isTextEditable() && mTextView.isSuggestionsEnabled() 762 && !(mTextView.isInExtractedMode())) { 763 if (mSpellChecker == null && createSpellChecker) { 764 mSpellChecker = new SpellChecker(mTextView); 765 } 766 if (mSpellChecker != null) { 767 mSpellChecker.spellCheck(start, end); 768 } 769 } 770 } 771 772 void onScreenStateChanged(int screenState) { 773 switch (screenState) { 774 case View.SCREEN_STATE_ON: 775 resumeBlink(); 776 break; 777 case View.SCREEN_STATE_OFF: 778 suspendBlink(); 779 break; 780 } 781 } 782 783 private void suspendBlink() { 784 if (mBlink != null) { 785 mBlink.cancel(); 786 } 787 } 788 789 private void resumeBlink() { 790 if (mBlink != null) { 791 mBlink.uncancel(); 792 makeBlink(); 793 } 794 } 795 796 void adjustInputType(boolean password, boolean passwordInputType, 797 boolean webPasswordInputType, boolean numberPasswordInputType) { 798 // mInputType has been set from inputType, possibly modified by mInputMethod. 799 // Specialize mInputType to [web]password if we have a text class and the original input 800 // type was a password. 801 if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 802 if (password || passwordInputType) { 803 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 804 | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD; 805 } 806 if (webPasswordInputType) { 807 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 808 | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 809 } 810 } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) { 811 if (numberPasswordInputType) { 812 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 813 | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD; 814 } 815 } 816 } 817 818 private void chooseSize(@NonNull PopupWindow pop, @NonNull CharSequence text, 819 @NonNull TextView tv) { 820 final int wid = tv.getPaddingLeft() + tv.getPaddingRight(); 821 final int ht = tv.getPaddingTop() + tv.getPaddingBottom(); 822 823 final int defaultWidthInPixels = mTextView.getResources().getDimensionPixelSize( 824 com.android.internal.R.dimen.textview_error_popup_default_width); 825 final StaticLayout l = StaticLayout.Builder.obtain(text, 0, text.length(), tv.getPaint(), 826 defaultWidthInPixels) 827 .setUseLineSpacingFromFallbacks(tv.mUseFallbackLineSpacing) 828 .build(); 829 830 float max = 0; 831 for (int i = 0; i < l.getLineCount(); i++) { 832 max = Math.max(max, l.getLineWidth(i)); 833 } 834 835 /* 836 * Now set the popup size to be big enough for the text plus the border capped 837 * to DEFAULT_MAX_POPUP_WIDTH 838 */ 839 pop.setWidth(wid + (int) Math.ceil(max)); 840 pop.setHeight(ht + l.getHeight()); 841 } 842 843 void setFrame() { 844 if (mErrorPopup != null) { 845 TextView tv = (TextView) mErrorPopup.getContentView(); 846 chooseSize(mErrorPopup, mError, tv); 847 mErrorPopup.update(mTextView, getErrorX(), getErrorY(), 848 mErrorPopup.getWidth(), mErrorPopup.getHeight()); 849 } 850 } 851 852 private int getWordStart(int offset) { 853 // FIXME - For this and similar methods we're not doing anything to check if there's 854 // a LocaleSpan in the text, this may be something we should try handling or checking for. 855 int retOffset = getWordIteratorWithText().prevBoundary(offset); 856 if (getWordIteratorWithText().isOnPunctuation(retOffset)) { 857 // On punctuation boundary or within group of punctuation, find punctuation start. 858 retOffset = getWordIteratorWithText().getPunctuationBeginning(offset); 859 } else { 860 // Not on a punctuation boundary, find the word start. 861 retOffset = getWordIteratorWithText().getPrevWordBeginningOnTwoWordsBoundary(offset); 862 } 863 if (retOffset == BreakIterator.DONE) { 864 return offset; 865 } 866 return retOffset; 867 } 868 869 private int getWordEnd(int offset) { 870 int retOffset = getWordIteratorWithText().nextBoundary(offset); 871 if (getWordIteratorWithText().isAfterPunctuation(retOffset)) { 872 // On punctuation boundary or within group of punctuation, find punctuation end. 873 retOffset = getWordIteratorWithText().getPunctuationEnd(offset); 874 } else { 875 // Not on a punctuation boundary, find the word end. 876 retOffset = getWordIteratorWithText().getNextWordEndOnTwoWordBoundary(offset); 877 } 878 if (retOffset == BreakIterator.DONE) { 879 return offset; 880 } 881 return retOffset; 882 } 883 884 private boolean needsToSelectAllToSelectWordOrParagraph() { 885 if (mTextView.hasPasswordTransformationMethod()) { 886 // Always select all on a password field. 887 // Cut/copy menu entries are not available for passwords, but being able to select all 888 // is however useful to delete or paste to replace the entire content. 889 return true; 890 } 891 892 int inputType = mTextView.getInputType(); 893 int klass = inputType & InputType.TYPE_MASK_CLASS; 894 int variation = inputType & InputType.TYPE_MASK_VARIATION; 895 896 // Specific text field types: select the entire text for these 897 if (klass == InputType.TYPE_CLASS_NUMBER 898 || klass == InputType.TYPE_CLASS_PHONE 899 || klass == InputType.TYPE_CLASS_DATETIME 900 || variation == InputType.TYPE_TEXT_VARIATION_URI 901 || variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS 902 || variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS 903 || variation == InputType.TYPE_TEXT_VARIATION_FILTER) { 904 return true; 905 } 906 return false; 907 } 908 909 /** 910 * Adjusts selection to the word under last touch offset. Return true if the operation was 911 * successfully performed. 912 */ 913 boolean selectCurrentWord() { 914 if (!mTextView.canSelectText()) { 915 return false; 916 } 917 918 if (needsToSelectAllToSelectWordOrParagraph()) { 919 return mTextView.selectAllText(); 920 } 921 922 long lastTouchOffsets = getLastTouchOffsets(); 923 final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 924 final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 925 926 // Safety check in case standard touch event handling has been bypassed 927 if (minOffset < 0 || minOffset > mTextView.getText().length()) return false; 928 if (maxOffset < 0 || maxOffset > mTextView.getText().length()) return false; 929 930 int selectionStart, selectionEnd; 931 932 // If a URLSpan (web address, email, phone...) is found at that position, select it. 933 URLSpan[] urlSpans = 934 ((Spanned) mTextView.getText()).getSpans(minOffset, maxOffset, URLSpan.class); 935 if (urlSpans.length >= 1) { 936 URLSpan urlSpan = urlSpans[0]; 937 selectionStart = ((Spanned) mTextView.getText()).getSpanStart(urlSpan); 938 selectionEnd = ((Spanned) mTextView.getText()).getSpanEnd(urlSpan); 939 } else { 940 // FIXME - We should check if there's a LocaleSpan in the text, this may be 941 // something we should try handling or checking for. 942 final WordIterator wordIterator = getWordIterator(); 943 wordIterator.setCharSequence(mTextView.getText(), minOffset, maxOffset); 944 945 selectionStart = wordIterator.getBeginning(minOffset); 946 selectionEnd = wordIterator.getEnd(maxOffset); 947 948 if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE 949 || selectionStart == selectionEnd) { 950 // Possible when the word iterator does not properly handle the text's language 951 long range = getCharClusterRange(minOffset); 952 selectionStart = TextUtils.unpackRangeStartFromLong(range); 953 selectionEnd = TextUtils.unpackRangeEndFromLong(range); 954 } 955 } 956 957 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 958 return selectionEnd > selectionStart; 959 } 960 961 /** 962 * Adjusts selection to the paragraph under last touch offset. Return true if the operation was 963 * successfully performed. 964 */ 965 private boolean selectCurrentParagraph() { 966 if (!mTextView.canSelectText()) { 967 return false; 968 } 969 970 if (needsToSelectAllToSelectWordOrParagraph()) { 971 return mTextView.selectAllText(); 972 } 973 974 long lastTouchOffsets = getLastTouchOffsets(); 975 final int minLastTouchOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 976 final int maxLastTouchOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 977 978 final long paragraphsRange = getParagraphsRange(minLastTouchOffset, maxLastTouchOffset); 979 final int start = TextUtils.unpackRangeStartFromLong(paragraphsRange); 980 final int end = TextUtils.unpackRangeEndFromLong(paragraphsRange); 981 if (start < end) { 982 Selection.setSelection((Spannable) mTextView.getText(), start, end); 983 return true; 984 } 985 return false; 986 } 987 988 /** 989 * Get the minimum range of paragraphs that contains startOffset and endOffset. 990 */ 991 private long getParagraphsRange(int startOffset, int endOffset) { 992 final Layout layout = mTextView.getLayout(); 993 if (layout == null) { 994 return TextUtils.packRangeInLong(-1, -1); 995 } 996 final CharSequence text = mTextView.getText(); 997 int minLine = layout.getLineForOffset(startOffset); 998 // Search paragraph start. 999 while (minLine > 0) { 1000 final int prevLineEndOffset = layout.getLineEnd(minLine - 1); 1001 if (text.charAt(prevLineEndOffset - 1) == '\n') { 1002 break; 1003 } 1004 minLine--; 1005 } 1006 int maxLine = layout.getLineForOffset(endOffset); 1007 // Search paragraph end. 1008 while (maxLine < layout.getLineCount() - 1) { 1009 final int lineEndOffset = layout.getLineEnd(maxLine); 1010 if (text.charAt(lineEndOffset - 1) == '\n') { 1011 break; 1012 } 1013 maxLine++; 1014 } 1015 return TextUtils.packRangeInLong(layout.getLineStart(minLine), layout.getLineEnd(maxLine)); 1016 } 1017 1018 void onLocaleChanged() { 1019 // Will be re-created on demand in getWordIterator and getWordIteratorWithText with the 1020 // proper new locale 1021 mWordIterator = null; 1022 mWordIteratorWithText = null; 1023 } 1024 1025 public WordIterator getWordIterator() { 1026 if (mWordIterator == null) { 1027 mWordIterator = new WordIterator(mTextView.getTextServicesLocale()); 1028 } 1029 return mWordIterator; 1030 } 1031 1032 private WordIterator getWordIteratorWithText() { 1033 if (mWordIteratorWithText == null) { 1034 mWordIteratorWithText = new WordIterator(mTextView.getTextServicesLocale()); 1035 mUpdateWordIteratorText = true; 1036 } 1037 if (mUpdateWordIteratorText) { 1038 // FIXME - Shouldn't copy all of the text as only the area of the text relevant 1039 // to the user's selection is needed. A possible solution would be to 1040 // copy some number N of characters near the selection and then when the 1041 // user approaches N then we'd do another copy of the next N characters. 1042 CharSequence text = mTextView.getText(); 1043 mWordIteratorWithText.setCharSequence(text, 0, text.length()); 1044 mUpdateWordIteratorText = false; 1045 } 1046 return mWordIteratorWithText; 1047 } 1048 1049 private int getNextCursorOffset(int offset, boolean findAfterGivenOffset) { 1050 final Layout layout = mTextView.getLayout(); 1051 if (layout == null) return offset; 1052 return findAfterGivenOffset == layout.isRtlCharAt(offset) 1053 ? layout.getOffsetToLeftOf(offset) : layout.getOffsetToRightOf(offset); 1054 } 1055 1056 private long getCharClusterRange(int offset) { 1057 final int textLength = mTextView.getText().length(); 1058 if (offset < textLength) { 1059 final int clusterEndOffset = getNextCursorOffset(offset, true); 1060 return TextUtils.packRangeInLong( 1061 getNextCursorOffset(clusterEndOffset, false), clusterEndOffset); 1062 } 1063 if (offset - 1 >= 0) { 1064 final int clusterStartOffset = getNextCursorOffset(offset, false); 1065 return TextUtils.packRangeInLong(clusterStartOffset, 1066 getNextCursorOffset(clusterStartOffset, true)); 1067 } 1068 return TextUtils.packRangeInLong(offset, offset); 1069 } 1070 1071 private boolean touchPositionIsInSelection() { 1072 int selectionStart = mTextView.getSelectionStart(); 1073 int selectionEnd = mTextView.getSelectionEnd(); 1074 1075 if (selectionStart == selectionEnd) { 1076 return false; 1077 } 1078 1079 if (selectionStart > selectionEnd) { 1080 int tmp = selectionStart; 1081 selectionStart = selectionEnd; 1082 selectionEnd = tmp; 1083 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 1084 } 1085 1086 SelectionModifierCursorController selectionController = getSelectionController(); 1087 int minOffset = selectionController.getMinTouchOffset(); 1088 int maxOffset = selectionController.getMaxTouchOffset(); 1089 1090 return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); 1091 } 1092 1093 private PositionListener getPositionListener() { 1094 if (mPositionListener == null) { 1095 mPositionListener = new PositionListener(); 1096 } 1097 return mPositionListener; 1098 } 1099 1100 private interface TextViewPositionListener { 1101 public void updatePosition(int parentPositionX, int parentPositionY, 1102 boolean parentPositionChanged, boolean parentScrolled); 1103 } 1104 1105 private boolean isOffsetVisible(int offset) { 1106 Layout layout = mTextView.getLayout(); 1107 if (layout == null) return false; 1108 1109 final int line = layout.getLineForOffset(offset); 1110 final int lineBottom = layout.getLineBottom(line); 1111 final int primaryHorizontal = (int) layout.getPrimaryHorizontal(offset); 1112 return mTextView.isPositionVisible( 1113 primaryHorizontal + mTextView.viewportToContentHorizontalOffset(), 1114 lineBottom + mTextView.viewportToContentVerticalOffset()); 1115 } 1116 1117 /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed 1118 * in the view. Returns false when the position is in the empty space of left/right of text. 1119 */ 1120 private boolean isPositionOnText(float x, float y) { 1121 Layout layout = mTextView.getLayout(); 1122 if (layout == null) return false; 1123 1124 final int line = mTextView.getLineAtCoordinate(y); 1125 x = mTextView.convertToLocalHorizontalCoordinate(x); 1126 1127 if (x < layout.getLineLeft(line)) return false; 1128 if (x > layout.getLineRight(line)) return false; 1129 return true; 1130 } 1131 1132 private void startDragAndDrop() { 1133 getSelectionActionModeHelper().onSelectionDrag(); 1134 1135 // TODO: Fix drag and drop in full screen extracted mode. 1136 if (mTextView.isInExtractedMode()) { 1137 return; 1138 } 1139 final int start = mTextView.getSelectionStart(); 1140 final int end = mTextView.getSelectionEnd(); 1141 CharSequence selectedText = mTextView.getTransformedText(start, end); 1142 ClipData data = ClipData.newPlainText(null, selectedText); 1143 DragLocalState localState = new DragLocalState(mTextView, start, end); 1144 mTextView.startDragAndDrop(data, getTextThumbnailBuilder(start, end), localState, 1145 View.DRAG_FLAG_GLOBAL); 1146 stopTextActionMode(); 1147 if (hasSelectionController()) { 1148 getSelectionController().resetTouchOffsets(); 1149 } 1150 } 1151 1152 public boolean performLongClick(boolean handled) { 1153 // Long press in empty space moves cursor and starts the insertion action mode. 1154 if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) 1155 && mInsertionControllerEnabled) { 1156 final int offset = mTextView.getOffsetForPosition(mLastDownPositionX, 1157 mLastDownPositionY); 1158 Selection.setSelection((Spannable) mTextView.getText(), offset); 1159 getInsertionController().show(); 1160 mIsInsertionActionModeStartPending = true; 1161 handled = true; 1162 MetricsLogger.action( 1163 mTextView.getContext(), 1164 MetricsEvent.TEXT_LONGPRESS, 1165 TextViewMetrics.SUBTYPE_LONG_PRESS_OTHER); 1166 } 1167 1168 if (!handled && mTextActionMode != null) { 1169 if (touchPositionIsInSelection()) { 1170 startDragAndDrop(); 1171 MetricsLogger.action( 1172 mTextView.getContext(), 1173 MetricsEvent.TEXT_LONGPRESS, 1174 TextViewMetrics.SUBTYPE_LONG_PRESS_DRAG_AND_DROP); 1175 } else { 1176 stopTextActionMode(); 1177 selectCurrentWordAndStartDrag(); 1178 MetricsLogger.action( 1179 mTextView.getContext(), 1180 MetricsEvent.TEXT_LONGPRESS, 1181 TextViewMetrics.SUBTYPE_LONG_PRESS_SELECTION); 1182 } 1183 handled = true; 1184 } 1185 1186 // Start a new selection 1187 if (!handled) { 1188 handled = selectCurrentWordAndStartDrag(); 1189 if (handled) { 1190 MetricsLogger.action( 1191 mTextView.getContext(), 1192 MetricsEvent.TEXT_LONGPRESS, 1193 TextViewMetrics.SUBTYPE_LONG_PRESS_SELECTION); 1194 } 1195 } 1196 1197 return handled; 1198 } 1199 1200 float getLastUpPositionX() { 1201 return mLastUpPositionX; 1202 } 1203 1204 float getLastUpPositionY() { 1205 return mLastUpPositionY; 1206 } 1207 1208 private long getLastTouchOffsets() { 1209 SelectionModifierCursorController selectionController = getSelectionController(); 1210 final int minOffset = selectionController.getMinTouchOffset(); 1211 final int maxOffset = selectionController.getMaxTouchOffset(); 1212 return TextUtils.packRangeInLong(minOffset, maxOffset); 1213 } 1214 1215 void onFocusChanged(boolean focused, int direction) { 1216 mShowCursor = SystemClock.uptimeMillis(); 1217 ensureEndedBatchEdit(); 1218 1219 if (focused) { 1220 int selStart = mTextView.getSelectionStart(); 1221 int selEnd = mTextView.getSelectionEnd(); 1222 1223 // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection 1224 // mode for these, unless there was a specific selection already started. 1225 final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 1226 && selEnd == mTextView.getText().length(); 1227 1228 mCreatedWithASelection = mFrozenWithFocus && mTextView.hasSelection() 1229 && !isFocusHighlighted; 1230 1231 if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { 1232 // If a tap was used to give focus to that view, move cursor at tap position. 1233 // Has to be done before onTakeFocus, which can be overloaded. 1234 final int lastTapPosition = getLastTapPosition(); 1235 if (lastTapPosition >= 0) { 1236 Selection.setSelection((Spannable) mTextView.getText(), lastTapPosition); 1237 } 1238 1239 // Note this may have to be moved out of the Editor class 1240 MovementMethod mMovement = mTextView.getMovementMethod(); 1241 if (mMovement != null) { 1242 mMovement.onTakeFocus(mTextView, (Spannable) mTextView.getText(), direction); 1243 } 1244 1245 // The DecorView does not have focus when the 'Done' ExtractEditText button is 1246 // pressed. Since it is the ViewAncestor's mView, it requests focus before 1247 // ExtractEditText clears focus, which gives focus to the ExtractEditText. 1248 // This special case ensure that we keep current selection in that case. 1249 // It would be better to know why the DecorView does not have focus at that time. 1250 if (((mTextView.isInExtractedMode()) || mSelectionMoved) 1251 && selStart >= 0 && selEnd >= 0) { 1252 /* 1253 * Someone intentionally set the selection, so let them 1254 * do whatever it is that they wanted to do instead of 1255 * the default on-focus behavior. We reset the selection 1256 * here instead of just skipping the onTakeFocus() call 1257 * because some movement methods do something other than 1258 * just setting the selection in theirs and we still 1259 * need to go through that path. 1260 */ 1261 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 1262 } 1263 1264 if (mSelectAllOnFocus) { 1265 mTextView.selectAllText(); 1266 } 1267 1268 mTouchFocusSelected = true; 1269 } 1270 1271 mFrozenWithFocus = false; 1272 mSelectionMoved = false; 1273 1274 if (mError != null) { 1275 showError(); 1276 } 1277 1278 makeBlink(); 1279 } else { 1280 if (mError != null) { 1281 hideError(); 1282 } 1283 // Don't leave us in the middle of a batch edit. 1284 mTextView.onEndBatchEdit(); 1285 1286 if (mTextView.isInExtractedMode()) { 1287 hideCursorAndSpanControllers(); 1288 stopTextActionModeWithPreservingSelection(); 1289 } else { 1290 hideCursorAndSpanControllers(); 1291 if (mTextView.isTemporarilyDetached()) { 1292 stopTextActionModeWithPreservingSelection(); 1293 } else { 1294 stopTextActionMode(); 1295 } 1296 downgradeEasyCorrectionSpans(); 1297 } 1298 // No need to create the controller 1299 if (mSelectionModifierCursorController != null) { 1300 mSelectionModifierCursorController.resetTouchOffsets(); 1301 } 1302 1303 ensureNoSelectionIfNonSelectable(); 1304 } 1305 } 1306 1307 private void ensureNoSelectionIfNonSelectable() { 1308 // This could be the case if a TextLink has been tapped. 1309 if (!mTextView.textCanBeSelected() && mTextView.hasSelection()) { 1310 Selection.setSelection((Spannable) mTextView.getText(), 1311 mTextView.length(), mTextView.length()); 1312 } 1313 } 1314 1315 /** 1316 * Downgrades to simple suggestions all the easy correction spans that are not a spell check 1317 * span. 1318 */ 1319 private void downgradeEasyCorrectionSpans() { 1320 CharSequence text = mTextView.getText(); 1321 if (text instanceof Spannable) { 1322 Spannable spannable = (Spannable) text; 1323 SuggestionSpan[] suggestionSpans = spannable.getSpans(0, 1324 spannable.length(), SuggestionSpan.class); 1325 for (int i = 0; i < suggestionSpans.length; i++) { 1326 int flags = suggestionSpans[i].getFlags(); 1327 if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0 1328 && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) { 1329 flags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 1330 suggestionSpans[i].setFlags(flags); 1331 } 1332 } 1333 } 1334 } 1335 1336 void sendOnTextChanged(int start, int before, int after) { 1337 getSelectionActionModeHelper().onTextChanged(start, start + before); 1338 updateSpellCheckSpans(start, start + after, false); 1339 1340 // Flip flag to indicate the word iterator needs to have the text reset. 1341 mUpdateWordIteratorText = true; 1342 1343 // Hide the controllers as soon as text is modified (typing, procedural...) 1344 // We do not hide the span controllers, since they can be added when a new text is 1345 // inserted into the text view (voice IME). 1346 hideCursorControllers(); 1347 // Reset drag accelerator. 1348 if (mSelectionModifierCursorController != null) { 1349 mSelectionModifierCursorController.resetTouchOffsets(); 1350 } 1351 stopTextActionMode(); 1352 } 1353 1354 private int getLastTapPosition() { 1355 // No need to create the controller at that point, no last tap position saved 1356 if (mSelectionModifierCursorController != null) { 1357 int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); 1358 if (lastTapPosition >= 0) { 1359 // Safety check, should not be possible. 1360 if (lastTapPosition > mTextView.getText().length()) { 1361 lastTapPosition = mTextView.getText().length(); 1362 } 1363 return lastTapPosition; 1364 } 1365 } 1366 1367 return -1; 1368 } 1369 1370 void onWindowFocusChanged(boolean hasWindowFocus) { 1371 if (hasWindowFocus) { 1372 if (mBlink != null) { 1373 mBlink.uncancel(); 1374 makeBlink(); 1375 } 1376 if (mTextView.hasSelection() && !extractedTextModeWillBeStarted()) { 1377 refreshTextActionMode(); 1378 } 1379 } else { 1380 if (mBlink != null) { 1381 mBlink.cancel(); 1382 } 1383 if (mInputContentType != null) { 1384 mInputContentType.enterDown = false; 1385 } 1386 // Order matters! Must be done before onParentLostFocus to rely on isShowingUp 1387 hideCursorAndSpanControllers(); 1388 stopTextActionModeWithPreservingSelection(); 1389 if (mSuggestionsPopupWindow != null) { 1390 mSuggestionsPopupWindow.onParentLostFocus(); 1391 } 1392 1393 // Don't leave us in the middle of a batch edit. Same as in onFocusChanged 1394 ensureEndedBatchEdit(); 1395 1396 ensureNoSelectionIfNonSelectable(); 1397 } 1398 } 1399 1400 private void updateTapState(MotionEvent event) { 1401 final int action = event.getActionMasked(); 1402 if (action == MotionEvent.ACTION_DOWN) { 1403 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 1404 // Detect double tap and triple click. 1405 if (((mTapState == TAP_STATE_FIRST_TAP) 1406 || ((mTapState == TAP_STATE_DOUBLE_TAP) && isMouse)) 1407 && (SystemClock.uptimeMillis() - mLastTouchUpTime) 1408 <= ViewConfiguration.getDoubleTapTimeout()) { 1409 if (mTapState == TAP_STATE_FIRST_TAP) { 1410 mTapState = TAP_STATE_DOUBLE_TAP; 1411 } else { 1412 mTapState = TAP_STATE_TRIPLE_CLICK; 1413 } 1414 } else { 1415 mTapState = TAP_STATE_FIRST_TAP; 1416 } 1417 } 1418 if (action == MotionEvent.ACTION_UP) { 1419 mLastTouchUpTime = SystemClock.uptimeMillis(); 1420 } 1421 } 1422 1423 private boolean shouldFilterOutTouchEvent(MotionEvent event) { 1424 if (!event.isFromSource(InputDevice.SOURCE_MOUSE)) { 1425 return false; 1426 } 1427 final boolean primaryButtonStateChanged = 1428 ((mLastButtonState ^ event.getButtonState()) & MotionEvent.BUTTON_PRIMARY) != 0; 1429 final int action = event.getActionMasked(); 1430 if ((action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_UP) 1431 && !primaryButtonStateChanged) { 1432 return true; 1433 } 1434 if (action == MotionEvent.ACTION_MOVE 1435 && !event.isButtonPressed(MotionEvent.BUTTON_PRIMARY)) { 1436 return true; 1437 } 1438 return false; 1439 } 1440 1441 void onTouchEvent(MotionEvent event) { 1442 final boolean filterOutEvent = shouldFilterOutTouchEvent(event); 1443 mLastButtonState = event.getButtonState(); 1444 if (filterOutEvent) { 1445 if (event.getActionMasked() == MotionEvent.ACTION_UP) { 1446 mDiscardNextActionUp = true; 1447 } 1448 return; 1449 } 1450 updateTapState(event); 1451 updateFloatingToolbarVisibility(event); 1452 1453 if (hasSelectionController()) { 1454 getSelectionController().onTouchEvent(event); 1455 } 1456 1457 if (mShowSuggestionRunnable != null) { 1458 mTextView.removeCallbacks(mShowSuggestionRunnable); 1459 mShowSuggestionRunnable = null; 1460 } 1461 1462 if (event.getActionMasked() == MotionEvent.ACTION_UP) { 1463 mLastUpPositionX = event.getX(); 1464 mLastUpPositionY = event.getY(); 1465 } 1466 1467 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 1468 mLastDownPositionX = event.getX(); 1469 mLastDownPositionY = event.getY(); 1470 1471 // Reset this state; it will be re-set if super.onTouchEvent 1472 // causes focus to move to the view. 1473 mTouchFocusSelected = false; 1474 mIgnoreActionUpEvent = false; 1475 } 1476 } 1477 1478 private void updateFloatingToolbarVisibility(MotionEvent event) { 1479 if (mTextActionMode != null) { 1480 switch (event.getActionMasked()) { 1481 case MotionEvent.ACTION_MOVE: 1482 hideFloatingToolbar(ActionMode.DEFAULT_HIDE_DURATION); 1483 break; 1484 case MotionEvent.ACTION_UP: // fall through 1485 case MotionEvent.ACTION_CANCEL: 1486 showFloatingToolbar(); 1487 } 1488 } 1489 } 1490 1491 void hideFloatingToolbar(int duration) { 1492 if (mTextActionMode != null) { 1493 mTextView.removeCallbacks(mShowFloatingToolbar); 1494 mTextActionMode.hide(duration); 1495 } 1496 } 1497 1498 private void showFloatingToolbar() { 1499 if (mTextActionMode != null) { 1500 // Delay "show" so it doesn't interfere with click confirmations 1501 // or double-clicks that could "dismiss" the floating toolbar. 1502 int delay = ViewConfiguration.getDoubleTapTimeout(); 1503 mTextView.postDelayed(mShowFloatingToolbar, delay); 1504 1505 // This classifies the text and most likely returns before the toolbar is actually 1506 // shown. If not, it will update the toolbar with the result when classification 1507 // returns. We would rather not wait for a long running classification process. 1508 invalidateActionModeAsync(); 1509 } 1510 } 1511 1512 public void beginBatchEdit() { 1513 mInBatchEditControllers = true; 1514 final InputMethodState ims = mInputMethodState; 1515 if (ims != null) { 1516 int nesting = ++ims.mBatchEditNesting; 1517 if (nesting == 1) { 1518 ims.mCursorChanged = false; 1519 ims.mChangedDelta = 0; 1520 if (ims.mContentChanged) { 1521 // We already have a pending change from somewhere else, 1522 // so turn this into a full update. 1523 ims.mChangedStart = 0; 1524 ims.mChangedEnd = mTextView.getText().length(); 1525 } else { 1526 ims.mChangedStart = EXTRACT_UNKNOWN; 1527 ims.mChangedEnd = EXTRACT_UNKNOWN; 1528 ims.mContentChanged = false; 1529 } 1530 mUndoInputFilter.beginBatchEdit(); 1531 mTextView.onBeginBatchEdit(); 1532 } 1533 } 1534 } 1535 1536 public void endBatchEdit() { 1537 mInBatchEditControllers = false; 1538 final InputMethodState ims = mInputMethodState; 1539 if (ims != null) { 1540 int nesting = --ims.mBatchEditNesting; 1541 if (nesting == 0) { 1542 finishBatchEdit(ims); 1543 } 1544 } 1545 } 1546 1547 void ensureEndedBatchEdit() { 1548 final InputMethodState ims = mInputMethodState; 1549 if (ims != null && ims.mBatchEditNesting != 0) { 1550 ims.mBatchEditNesting = 0; 1551 finishBatchEdit(ims); 1552 } 1553 } 1554 1555 void finishBatchEdit(final InputMethodState ims) { 1556 mTextView.onEndBatchEdit(); 1557 mUndoInputFilter.endBatchEdit(); 1558 1559 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1560 mTextView.updateAfterEdit(); 1561 reportExtractedText(); 1562 } else if (ims.mCursorChanged) { 1563 // Cheesy way to get us to report the current cursor location. 1564 mTextView.invalidateCursor(); 1565 } 1566 // sendUpdateSelection knows to avoid sending if the selection did 1567 // not actually change. 1568 sendUpdateSelection(); 1569 1570 // Show drag handles if they were blocked by batch edit mode. 1571 if (mTextActionMode != null) { 1572 final CursorController cursorController = mTextView.hasSelection() 1573 ? getSelectionController() : getInsertionController(); 1574 if (cursorController != null && !cursorController.isActive() 1575 && !cursorController.isCursorBeingModified()) { 1576 cursorController.show(); 1577 } 1578 } 1579 } 1580 1581 static final int EXTRACT_NOTHING = -2; 1582 static final int EXTRACT_UNKNOWN = -1; 1583 1584 boolean extractText(ExtractedTextRequest request, ExtractedText outText) { 1585 return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, 1586 EXTRACT_UNKNOWN, outText); 1587 } 1588 1589 private boolean extractTextInternal(@Nullable ExtractedTextRequest request, 1590 int partialStartOffset, int partialEndOffset, int delta, 1591 @Nullable ExtractedText outText) { 1592 if (request == null || outText == null) { 1593 return false; 1594 } 1595 1596 final CharSequence content = mTextView.getText(); 1597 if (content == null) { 1598 return false; 1599 } 1600 1601 if (partialStartOffset != EXTRACT_NOTHING) { 1602 final int N = content.length(); 1603 if (partialStartOffset < 0) { 1604 outText.partialStartOffset = outText.partialEndOffset = -1; 1605 partialStartOffset = 0; 1606 partialEndOffset = N; 1607 } else { 1608 // Now use the delta to determine the actual amount of text 1609 // we need. 1610 partialEndOffset += delta; 1611 // Adjust offsets to ensure we contain full spans. 1612 if (content instanceof Spanned) { 1613 Spanned spanned = (Spanned) content; 1614 Object[] spans = spanned.getSpans(partialStartOffset, 1615 partialEndOffset, ParcelableSpan.class); 1616 int i = spans.length; 1617 while (i > 0) { 1618 i--; 1619 int j = spanned.getSpanStart(spans[i]); 1620 if (j < partialStartOffset) partialStartOffset = j; 1621 j = spanned.getSpanEnd(spans[i]); 1622 if (j > partialEndOffset) partialEndOffset = j; 1623 } 1624 } 1625 outText.partialStartOffset = partialStartOffset; 1626 outText.partialEndOffset = partialEndOffset - delta; 1627 1628 if (partialStartOffset > N) { 1629 partialStartOffset = N; 1630 } else if (partialStartOffset < 0) { 1631 partialStartOffset = 0; 1632 } 1633 if (partialEndOffset > N) { 1634 partialEndOffset = N; 1635 } else if (partialEndOffset < 0) { 1636 partialEndOffset = 0; 1637 } 1638 } 1639 if ((request.flags & InputConnection.GET_TEXT_WITH_STYLES) != 0) { 1640 outText.text = content.subSequence(partialStartOffset, 1641 partialEndOffset); 1642 } else { 1643 outText.text = TextUtils.substring(content, partialStartOffset, 1644 partialEndOffset); 1645 } 1646 } else { 1647 outText.partialStartOffset = 0; 1648 outText.partialEndOffset = 0; 1649 outText.text = ""; 1650 } 1651 outText.flags = 0; 1652 if (MetaKeyKeyListener.getMetaState(content, MetaKeyKeyListener.META_SELECTING) != 0) { 1653 outText.flags |= ExtractedText.FLAG_SELECTING; 1654 } 1655 if (mTextView.isSingleLine()) { 1656 outText.flags |= ExtractedText.FLAG_SINGLE_LINE; 1657 } 1658 outText.startOffset = 0; 1659 outText.selectionStart = mTextView.getSelectionStart(); 1660 outText.selectionEnd = mTextView.getSelectionEnd(); 1661 outText.hint = mTextView.getHint(); 1662 return true; 1663 } 1664 1665 boolean reportExtractedText() { 1666 final Editor.InputMethodState ims = mInputMethodState; 1667 if (ims == null) { 1668 return false; 1669 } 1670 ims.mSelectionModeChanged = false; 1671 final ExtractedTextRequest req = ims.mExtractedTextRequest; 1672 if (req == null) { 1673 return false; 1674 } 1675 final InputMethodManager imm = InputMethodManager.peekInstance(); 1676 if (imm == null) { 1677 return false; 1678 } 1679 if (TextView.DEBUG_EXTRACT) { 1680 Log.v(TextView.LOG_TAG, "Retrieving extracted start=" 1681 + ims.mChangedStart 1682 + " end=" + ims.mChangedEnd 1683 + " delta=" + ims.mChangedDelta); 1684 } 1685 if (ims.mChangedStart < 0 && !ims.mContentChanged) { 1686 ims.mChangedStart = EXTRACT_NOTHING; 1687 } 1688 if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, 1689 ims.mChangedDelta, ims.mExtractedText)) { 1690 if (TextView.DEBUG_EXTRACT) { 1691 Log.v(TextView.LOG_TAG, 1692 "Reporting extracted start=" 1693 + ims.mExtractedText.partialStartOffset 1694 + " end=" + ims.mExtractedText.partialEndOffset 1695 + ": " + ims.mExtractedText.text); 1696 } 1697 1698 imm.updateExtractedText(mTextView, req.token, ims.mExtractedText); 1699 ims.mChangedStart = EXTRACT_UNKNOWN; 1700 ims.mChangedEnd = EXTRACT_UNKNOWN; 1701 ims.mChangedDelta = 0; 1702 ims.mContentChanged = false; 1703 return true; 1704 } 1705 return false; 1706 } 1707 1708 private void sendUpdateSelection() { 1709 if (null != mInputMethodState && mInputMethodState.mBatchEditNesting <= 0) { 1710 final InputMethodManager imm = InputMethodManager.peekInstance(); 1711 if (null != imm) { 1712 final int selectionStart = mTextView.getSelectionStart(); 1713 final int selectionEnd = mTextView.getSelectionEnd(); 1714 int candStart = -1; 1715 int candEnd = -1; 1716 if (mTextView.getText() instanceof Spannable) { 1717 final Spannable sp = (Spannable) mTextView.getText(); 1718 candStart = EditableInputConnection.getComposingSpanStart(sp); 1719 candEnd = EditableInputConnection.getComposingSpanEnd(sp); 1720 } 1721 // InputMethodManager#updateSelection skips sending the message if 1722 // none of the parameters have changed since the last time we called it. 1723 imm.updateSelection(mTextView, 1724 selectionStart, selectionEnd, candStart, candEnd); 1725 } 1726 } 1727 } 1728 1729 void onDraw(Canvas canvas, Layout layout, Path highlight, Paint highlightPaint, 1730 int cursorOffsetVertical) { 1731 final int selectionStart = mTextView.getSelectionStart(); 1732 final int selectionEnd = mTextView.getSelectionEnd(); 1733 1734 final InputMethodState ims = mInputMethodState; 1735 if (ims != null && ims.mBatchEditNesting == 0) { 1736 InputMethodManager imm = InputMethodManager.peekInstance(); 1737 if (imm != null) { 1738 if (imm.isActive(mTextView)) { 1739 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1740 // We are in extract mode and the content has changed 1741 // in some way... just report complete new text to the 1742 // input method. 1743 reportExtractedText(); 1744 } 1745 } 1746 } 1747 } 1748 1749 if (mCorrectionHighlighter != null) { 1750 mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); 1751 } 1752 1753 if (highlight != null && selectionStart == selectionEnd && mDrawableForCursor != null) { 1754 drawCursor(canvas, cursorOffsetVertical); 1755 // Rely on the drawable entirely, do not draw the cursor line. 1756 // Has to be done after the IMM related code above which relies on the highlight. 1757 highlight = null; 1758 } 1759 1760 if (mSelectionActionModeHelper != null) { 1761 mSelectionActionModeHelper.onDraw(canvas); 1762 if (mSelectionActionModeHelper.isDrawingHighlight()) { 1763 highlight = null; 1764 } 1765 } 1766 1767 if (mTextView.canHaveDisplayList() && canvas.isHardwareAccelerated()) { 1768 drawHardwareAccelerated(canvas, layout, highlight, highlightPaint, 1769 cursorOffsetVertical); 1770 } else { 1771 layout.draw(canvas, highlight, highlightPaint, cursorOffsetVertical); 1772 } 1773 } 1774 1775 private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight, 1776 Paint highlightPaint, int cursorOffsetVertical) { 1777 final long lineRange = layout.getLineRangeForDraw(canvas); 1778 int firstLine = TextUtils.unpackRangeStartFromLong(lineRange); 1779 int lastLine = TextUtils.unpackRangeEndFromLong(lineRange); 1780 if (lastLine < 0) return; 1781 1782 layout.drawBackground(canvas, highlight, highlightPaint, cursorOffsetVertical, 1783 firstLine, lastLine); 1784 1785 if (layout instanceof DynamicLayout) { 1786 if (mTextRenderNodes == null) { 1787 mTextRenderNodes = ArrayUtils.emptyArray(TextRenderNode.class); 1788 } 1789 1790 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1791 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1792 int[] blockIndices = dynamicLayout.getBlockIndices(); 1793 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1794 final int indexFirstChangedBlock = dynamicLayout.getIndexFirstChangedBlock(); 1795 1796 final ArraySet<Integer> blockSet = dynamicLayout.getBlocksAlwaysNeedToBeRedrawn(); 1797 if (blockSet != null) { 1798 for (int i = 0; i < blockSet.size(); i++) { 1799 final int blockIndex = dynamicLayout.getBlockIndex(blockSet.valueAt(i)); 1800 if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX 1801 && mTextRenderNodes[blockIndex] != null) { 1802 mTextRenderNodes[blockIndex].needsToBeShifted = true; 1803 } 1804 } 1805 } 1806 1807 int startBlock = Arrays.binarySearch(blockEndLines, 0, numberOfBlocks, firstLine); 1808 if (startBlock < 0) { 1809 startBlock = -(startBlock + 1); 1810 } 1811 startBlock = Math.min(indexFirstChangedBlock, startBlock); 1812 1813 int startIndexToFindAvailableRenderNode = 0; 1814 int lastIndex = numberOfBlocks; 1815 1816 for (int i = startBlock; i < numberOfBlocks; i++) { 1817 final int blockIndex = blockIndices[i]; 1818 if (i >= indexFirstChangedBlock 1819 && blockIndex != DynamicLayout.INVALID_BLOCK_INDEX 1820 && mTextRenderNodes[blockIndex] != null) { 1821 mTextRenderNodes[blockIndex].needsToBeShifted = true; 1822 } 1823 if (blockEndLines[i] < firstLine) { 1824 // Blocks in [indexFirstChangedBlock, firstLine) are not redrawn here. They will 1825 // be redrawn after they get scrolled into drawing range. 1826 continue; 1827 } 1828 startIndexToFindAvailableRenderNode = drawHardwareAcceleratedInner(canvas, layout, 1829 highlight, highlightPaint, cursorOffsetVertical, blockEndLines, 1830 blockIndices, i, numberOfBlocks, startIndexToFindAvailableRenderNode); 1831 if (blockEndLines[i] >= lastLine) { 1832 lastIndex = Math.max(indexFirstChangedBlock, i + 1); 1833 break; 1834 } 1835 } 1836 if (blockSet != null) { 1837 for (int i = 0; i < blockSet.size(); i++) { 1838 final int block = blockSet.valueAt(i); 1839 final int blockIndex = dynamicLayout.getBlockIndex(block); 1840 if (blockIndex == DynamicLayout.INVALID_BLOCK_INDEX 1841 || mTextRenderNodes[blockIndex] == null 1842 || mTextRenderNodes[blockIndex].needsToBeShifted) { 1843 startIndexToFindAvailableRenderNode = drawHardwareAcceleratedInner(canvas, 1844 layout, highlight, highlightPaint, cursorOffsetVertical, 1845 blockEndLines, blockIndices, block, numberOfBlocks, 1846 startIndexToFindAvailableRenderNode); 1847 } 1848 } 1849 } 1850 1851 dynamicLayout.setIndexFirstChangedBlock(lastIndex); 1852 } else { 1853 // Boring layout is used for empty and hint text 1854 layout.drawText(canvas, firstLine, lastLine); 1855 } 1856 } 1857 1858 private int drawHardwareAcceleratedInner(Canvas canvas, Layout layout, Path highlight, 1859 Paint highlightPaint, int cursorOffsetVertical, int[] blockEndLines, 1860 int[] blockIndices, int blockInfoIndex, int numberOfBlocks, 1861 int startIndexToFindAvailableRenderNode) { 1862 final int blockEndLine = blockEndLines[blockInfoIndex]; 1863 int blockIndex = blockIndices[blockInfoIndex]; 1864 1865 final boolean blockIsInvalid = blockIndex == DynamicLayout.INVALID_BLOCK_INDEX; 1866 if (blockIsInvalid) { 1867 blockIndex = getAvailableDisplayListIndex(blockIndices, numberOfBlocks, 1868 startIndexToFindAvailableRenderNode); 1869 // Note how dynamic layout's internal block indices get updated from Editor 1870 blockIndices[blockInfoIndex] = blockIndex; 1871 if (mTextRenderNodes[blockIndex] != null) { 1872 mTextRenderNodes[blockIndex].isDirty = true; 1873 } 1874 startIndexToFindAvailableRenderNode = blockIndex + 1; 1875 } 1876 1877 if (mTextRenderNodes[blockIndex] == null) { 1878 mTextRenderNodes[blockIndex] = new TextRenderNode("Text " + blockIndex); 1879 } 1880 1881 final boolean blockDisplayListIsInvalid = mTextRenderNodes[blockIndex].needsRecord(); 1882 RenderNode blockDisplayList = mTextRenderNodes[blockIndex].renderNode; 1883 if (mTextRenderNodes[blockIndex].needsToBeShifted || blockDisplayListIsInvalid) { 1884 final int blockBeginLine = blockInfoIndex == 0 ? 1885 0 : blockEndLines[blockInfoIndex - 1] + 1; 1886 final int top = layout.getLineTop(blockBeginLine); 1887 final int bottom = layout.getLineBottom(blockEndLine); 1888 int left = 0; 1889 int right = mTextView.getWidth(); 1890 if (mTextView.getHorizontallyScrolling()) { 1891 float min = Float.MAX_VALUE; 1892 float max = Float.MIN_VALUE; 1893 for (int line = blockBeginLine; line <= blockEndLine; line++) { 1894 min = Math.min(min, layout.getLineLeft(line)); 1895 max = Math.max(max, layout.getLineRight(line)); 1896 } 1897 left = (int) min; 1898 right = (int) (max + 0.5f); 1899 } 1900 1901 // Rebuild display list if it is invalid 1902 if (blockDisplayListIsInvalid) { 1903 final DisplayListCanvas displayListCanvas = blockDisplayList.start( 1904 right - left, bottom - top); 1905 try { 1906 // drawText is always relative to TextView's origin, this translation 1907 // brings this range of text back to the top left corner of the viewport 1908 displayListCanvas.translate(-left, -top); 1909 layout.drawText(displayListCanvas, blockBeginLine, blockEndLine); 1910 mTextRenderNodes[blockIndex].isDirty = false; 1911 // No need to untranslate, previous context is popped after 1912 // drawDisplayList 1913 } finally { 1914 blockDisplayList.end(displayListCanvas); 1915 // Same as drawDisplayList below, handled by our TextView's parent 1916 blockDisplayList.setClipToBounds(false); 1917 } 1918 } 1919 1920 // Valid display list only needs to update its drawing location. 1921 blockDisplayList.setLeftTopRightBottom(left, top, right, bottom); 1922 mTextRenderNodes[blockIndex].needsToBeShifted = false; 1923 } 1924 ((DisplayListCanvas) canvas).drawRenderNode(blockDisplayList); 1925 return startIndexToFindAvailableRenderNode; 1926 } 1927 1928 private int getAvailableDisplayListIndex(int[] blockIndices, int numberOfBlocks, 1929 int searchStartIndex) { 1930 int length = mTextRenderNodes.length; 1931 for (int i = searchStartIndex; i < length; i++) { 1932 boolean blockIndexFound = false; 1933 for (int j = 0; j < numberOfBlocks; j++) { 1934 if (blockIndices[j] == i) { 1935 blockIndexFound = true; 1936 break; 1937 } 1938 } 1939 if (blockIndexFound) continue; 1940 return i; 1941 } 1942 1943 // No available index found, the pool has to grow 1944 mTextRenderNodes = GrowingArrayUtils.append(mTextRenderNodes, length, null); 1945 return length; 1946 } 1947 1948 private void drawCursor(Canvas canvas, int cursorOffsetVertical) { 1949 final boolean translate = cursorOffsetVertical != 0; 1950 if (translate) canvas.translate(0, cursorOffsetVertical); 1951 if (mDrawableForCursor != null) { 1952 mDrawableForCursor.draw(canvas); 1953 } 1954 if (translate) canvas.translate(0, -cursorOffsetVertical); 1955 } 1956 1957 void invalidateHandlesAndActionMode() { 1958 if (mSelectionModifierCursorController != null) { 1959 mSelectionModifierCursorController.invalidateHandles(); 1960 } 1961 if (mInsertionPointCursorController != null) { 1962 mInsertionPointCursorController.invalidateHandle(); 1963 } 1964 if (mTextActionMode != null) { 1965 invalidateActionMode(); 1966 } 1967 } 1968 1969 /** 1970 * Invalidates all the sub-display lists that overlap the specified character range 1971 */ 1972 void invalidateTextDisplayList(Layout layout, int start, int end) { 1973 if (mTextRenderNodes != null && layout instanceof DynamicLayout) { 1974 final int firstLine = layout.getLineForOffset(start); 1975 final int lastLine = layout.getLineForOffset(end); 1976 1977 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1978 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1979 int[] blockIndices = dynamicLayout.getBlockIndices(); 1980 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1981 1982 int i = 0; 1983 // Skip the blocks before firstLine 1984 while (i < numberOfBlocks) { 1985 if (blockEndLines[i] >= firstLine) break; 1986 i++; 1987 } 1988 1989 // Invalidate all subsequent blocks until lastLine is passed 1990 while (i < numberOfBlocks) { 1991 final int blockIndex = blockIndices[i]; 1992 if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX) { 1993 mTextRenderNodes[blockIndex].isDirty = true; 1994 } 1995 if (blockEndLines[i] >= lastLine) break; 1996 i++; 1997 } 1998 } 1999 } 2000 2001 void invalidateTextDisplayList() { 2002 if (mTextRenderNodes != null) { 2003 for (int i = 0; i < mTextRenderNodes.length; i++) { 2004 if (mTextRenderNodes[i] != null) mTextRenderNodes[i].isDirty = true; 2005 } 2006 } 2007 } 2008 2009 void updateCursorPosition() { 2010 if (mTextView.mCursorDrawableRes == 0) { 2011 mDrawableForCursor = null; 2012 return; 2013 } 2014 2015 final Layout layout = mTextView.getLayout(); 2016 final int offset = mTextView.getSelectionStart(); 2017 final int line = layout.getLineForOffset(offset); 2018 final int top = layout.getLineTop(line); 2019 final int bottom = layout.getLineBottomWithoutSpacing(line); 2020 2021 final boolean clamped = layout.shouldClampCursor(line); 2022 updateCursorPosition(top, bottom, layout.getPrimaryHorizontal(offset, clamped)); 2023 } 2024 2025 void refreshTextActionMode() { 2026 if (extractedTextModeWillBeStarted()) { 2027 mRestartActionModeOnNextRefresh = false; 2028 return; 2029 } 2030 final boolean hasSelection = mTextView.hasSelection(); 2031 final SelectionModifierCursorController selectionController = getSelectionController(); 2032 final InsertionPointCursorController insertionController = getInsertionController(); 2033 if ((selectionController != null && selectionController.isCursorBeingModified()) 2034 || (insertionController != null && insertionController.isCursorBeingModified())) { 2035 // ActionMode should be managed by the currently active cursor controller. 2036 mRestartActionModeOnNextRefresh = false; 2037 return; 2038 } 2039 if (hasSelection) { 2040 hideInsertionPointCursorController(); 2041 if (mTextActionMode == null) { 2042 if (mRestartActionModeOnNextRefresh) { 2043 // To avoid distraction, newly start action mode only when selection action 2044 // mode is being restarted. 2045 startSelectionActionModeAsync(false); 2046 } 2047 } else if (selectionController == null || !selectionController.isActive()) { 2048 // Insertion action mode is active. Avoid dismissing the selection. 2049 stopTextActionModeWithPreservingSelection(); 2050 startSelectionActionModeAsync(false); 2051 } else { 2052 mTextActionMode.invalidateContentRect(); 2053 } 2054 } else { 2055 // Insertion action mode is started only when insertion controller is explicitly 2056 // activated. 2057 if (insertionController == null || !insertionController.isActive()) { 2058 stopTextActionMode(); 2059 } else if (mTextActionMode != null) { 2060 mTextActionMode.invalidateContentRect(); 2061 } 2062 } 2063 mRestartActionModeOnNextRefresh = false; 2064 } 2065 2066 /** 2067 * Start an Insertion action mode. 2068 */ 2069 void startInsertionActionMode() { 2070 if (mInsertionActionModeRunnable != null) { 2071 mTextView.removeCallbacks(mInsertionActionModeRunnable); 2072 } 2073 if (extractedTextModeWillBeStarted()) { 2074 return; 2075 } 2076 stopTextActionMode(); 2077 2078 ActionMode.Callback actionModeCallback = 2079 new TextActionModeCallback(TextActionMode.INSERTION); 2080 mTextActionMode = mTextView.startActionMode( 2081 actionModeCallback, ActionMode.TYPE_FLOATING); 2082 if (mTextActionMode != null && getInsertionController() != null) { 2083 getInsertionController().show(); 2084 } 2085 } 2086 2087 @NonNull 2088 TextView getTextView() { 2089 return mTextView; 2090 } 2091 2092 @Nullable 2093 ActionMode getTextActionMode() { 2094 return mTextActionMode; 2095 } 2096 2097 void setRestartActionModeOnNextRefresh(boolean value) { 2098 mRestartActionModeOnNextRefresh = value; 2099 } 2100 2101 /** 2102 * Asynchronously starts a selection action mode using the TextClassifier. 2103 */ 2104 void startSelectionActionModeAsync(boolean adjustSelection) { 2105 getSelectionActionModeHelper().startSelectionActionModeAsync(adjustSelection); 2106 } 2107 2108 void startLinkActionModeAsync(TextLinks.TextLink link) { 2109 Preconditions.checkNotNull(link); 2110 if (!(mTextView.getText() instanceof Spannable)) { 2111 return; 2112 } 2113 stopTextActionMode(); 2114 getSelectionActionModeHelper().startLinkActionModeAsync(link); 2115 } 2116 2117 /** 2118 * Asynchronously invalidates an action mode using the TextClassifier. 2119 */ 2120 void invalidateActionModeAsync() { 2121 getSelectionActionModeHelper().invalidateActionModeAsync(); 2122 } 2123 2124 /** 2125 * Synchronously invalidates an action mode without the TextClassifier. 2126 */ 2127 private void invalidateActionMode() { 2128 if (mTextActionMode != null) { 2129 mTextActionMode.invalidate(); 2130 } 2131 } 2132 2133 private SelectionActionModeHelper getSelectionActionModeHelper() { 2134 if (mSelectionActionModeHelper == null) { 2135 mSelectionActionModeHelper = new SelectionActionModeHelper(this); 2136 } 2137 return mSelectionActionModeHelper; 2138 } 2139 2140 /** 2141 * If the TextView allows text selection, selects the current word when no existing selection 2142 * was available and starts a drag. 2143 * 2144 * @return true if the drag was started. 2145 */ 2146 private boolean selectCurrentWordAndStartDrag() { 2147 if (mInsertionActionModeRunnable != null) { 2148 mTextView.removeCallbacks(mInsertionActionModeRunnable); 2149 } 2150 if (extractedTextModeWillBeStarted()) { 2151 return false; 2152 } 2153 if (!checkField()) { 2154 return false; 2155 } 2156 if (!mTextView.hasSelection() && !selectCurrentWord()) { 2157 // No selection and cannot select a word. 2158 return false; 2159 } 2160 stopTextActionModeWithPreservingSelection(); 2161 getSelectionController().enterDrag( 2162 SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_WORD); 2163 return true; 2164 } 2165 2166 /** 2167 * Checks whether a selection can be performed on the current TextView. 2168 * 2169 * @return true if a selection can be performed 2170 */ 2171 boolean checkField() { 2172 if (!mTextView.canSelectText() || !mTextView.requestFocus()) { 2173 Log.w(TextView.LOG_TAG, 2174 "TextView does not support text selection. Selection cancelled."); 2175 return false; 2176 } 2177 return true; 2178 } 2179 2180 boolean startActionModeInternal(@TextActionMode int actionMode) { 2181 if (extractedTextModeWillBeStarted()) { 2182 return false; 2183 } 2184 if (mTextActionMode != null) { 2185 // Text action mode is already started 2186 invalidateActionMode(); 2187 return false; 2188 } 2189 2190 if (actionMode != TextActionMode.TEXT_LINK 2191 && (!checkField() || !mTextView.hasSelection())) { 2192 return false; 2193 } 2194 2195 ActionMode.Callback actionModeCallback = new TextActionModeCallback(actionMode); 2196 mTextActionMode = mTextView.startActionMode(actionModeCallback, ActionMode.TYPE_FLOATING); 2197 2198 final boolean selectionStarted = mTextActionMode != null; 2199 if (selectionStarted && !mTextView.isTextSelectable() && mShowSoftInputOnFocus) { 2200 // Show the IME to be able to replace text, except when selecting non editable text. 2201 final InputMethodManager imm = InputMethodManager.peekInstance(); 2202 if (imm != null) { 2203 imm.showSoftInput(mTextView, 0, null); 2204 } 2205 } 2206 return selectionStarted; 2207 } 2208 2209 private boolean extractedTextModeWillBeStarted() { 2210 if (!(mTextView.isInExtractedMode())) { 2211 final InputMethodManager imm = InputMethodManager.peekInstance(); 2212 return imm != null && imm.isFullscreenMode(); 2213 } 2214 return false; 2215 } 2216 2217 /** 2218 * @return <code>true</code> if it's reasonable to offer to show suggestions depending on 2219 * the current cursor position or selection range. This method is consistent with the 2220 * method to show suggestions {@link SuggestionsPopupWindow#updateSuggestions}. 2221 */ 2222 private boolean shouldOfferToShowSuggestions() { 2223 CharSequence text = mTextView.getText(); 2224 if (!(text instanceof Spannable)) return false; 2225 2226 final Spannable spannable = (Spannable) text; 2227 final int selectionStart = mTextView.getSelectionStart(); 2228 final int selectionEnd = mTextView.getSelectionEnd(); 2229 final SuggestionSpan[] suggestionSpans = spannable.getSpans(selectionStart, selectionEnd, 2230 SuggestionSpan.class); 2231 if (suggestionSpans.length == 0) { 2232 return false; 2233 } 2234 if (selectionStart == selectionEnd) { 2235 // Spans overlap the cursor. 2236 for (int i = 0; i < suggestionSpans.length; i++) { 2237 if (suggestionSpans[i].getSuggestions().length > 0) { 2238 return true; 2239 } 2240 } 2241 return false; 2242 } 2243 int minSpanStart = mTextView.getText().length(); 2244 int maxSpanEnd = 0; 2245 int unionOfSpansCoveringSelectionStartStart = mTextView.getText().length(); 2246 int unionOfSpansCoveringSelectionStartEnd = 0; 2247 boolean hasValidSuggestions = false; 2248 for (int i = 0; i < suggestionSpans.length; i++) { 2249 final int spanStart = spannable.getSpanStart(suggestionSpans[i]); 2250 final int spanEnd = spannable.getSpanEnd(suggestionSpans[i]); 2251 minSpanStart = Math.min(minSpanStart, spanStart); 2252 maxSpanEnd = Math.max(maxSpanEnd, spanEnd); 2253 if (selectionStart < spanStart || selectionStart > spanEnd) { 2254 // The span doesn't cover the current selection start point. 2255 continue; 2256 } 2257 hasValidSuggestions = 2258 hasValidSuggestions || suggestionSpans[i].getSuggestions().length > 0; 2259 unionOfSpansCoveringSelectionStartStart = 2260 Math.min(unionOfSpansCoveringSelectionStartStart, spanStart); 2261 unionOfSpansCoveringSelectionStartEnd = 2262 Math.max(unionOfSpansCoveringSelectionStartEnd, spanEnd); 2263 } 2264 if (!hasValidSuggestions) { 2265 return false; 2266 } 2267 if (unionOfSpansCoveringSelectionStartStart >= unionOfSpansCoveringSelectionStartEnd) { 2268 // No spans cover the selection start point. 2269 return false; 2270 } 2271 if (minSpanStart < unionOfSpansCoveringSelectionStartStart 2272 || maxSpanEnd > unionOfSpansCoveringSelectionStartEnd) { 2273 // There is a span that is not covered by the union. In this case, we soouldn't offer 2274 // to show suggestions as it's confusing. 2275 return false; 2276 } 2277 return true; 2278 } 2279 2280 /** 2281 * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with 2282 * {@link SuggestionSpan#FLAG_EASY_CORRECT} set. 2283 */ 2284 private boolean isCursorInsideEasyCorrectionSpan() { 2285 Spannable spannable = (Spannable) mTextView.getText(); 2286 SuggestionSpan[] suggestionSpans = spannable.getSpans(mTextView.getSelectionStart(), 2287 mTextView.getSelectionEnd(), SuggestionSpan.class); 2288 for (int i = 0; i < suggestionSpans.length; i++) { 2289 if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) { 2290 return true; 2291 } 2292 } 2293 return false; 2294 } 2295 2296 void onTouchUpEvent(MotionEvent event) { 2297 if (getSelectionActionModeHelper().resetSelection( 2298 getTextView().getOffsetForPosition(event.getX(), event.getY()))) { 2299 return; 2300 } 2301 2302 boolean selectAllGotFocus = mSelectAllOnFocus && mTextView.didTouchFocusSelect(); 2303 hideCursorAndSpanControllers(); 2304 stopTextActionMode(); 2305 CharSequence text = mTextView.getText(); 2306 if (!selectAllGotFocus && text.length() > 0) { 2307 // Move cursor 2308 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 2309 Selection.setSelection((Spannable) text, offset); 2310 if (mSpellChecker != null) { 2311 // When the cursor moves, the word that was typed may need spell check 2312 mSpellChecker.onSelectionChanged(); 2313 } 2314 2315 if (!extractedTextModeWillBeStarted()) { 2316 if (isCursorInsideEasyCorrectionSpan()) { 2317 // Cancel the single tap delayed runnable. 2318 if (mInsertionActionModeRunnable != null) { 2319 mTextView.removeCallbacks(mInsertionActionModeRunnable); 2320 } 2321 2322 mShowSuggestionRunnable = new Runnable() { 2323 public void run() { 2324 replace(); 2325 } 2326 }; 2327 // removeCallbacks is performed on every touch 2328 mTextView.postDelayed(mShowSuggestionRunnable, 2329 ViewConfiguration.getDoubleTapTimeout()); 2330 } else if (hasInsertionController()) { 2331 getInsertionController().show(); 2332 } 2333 } 2334 } 2335 } 2336 2337 protected void stopTextActionMode() { 2338 if (mTextActionMode != null) { 2339 // This will hide the mSelectionModifierCursorController 2340 mTextActionMode.finish(); 2341 } 2342 } 2343 2344 private void stopTextActionModeWithPreservingSelection() { 2345 if (mTextActionMode != null) { 2346 mRestartActionModeOnNextRefresh = true; 2347 } 2348 mPreserveSelection = true; 2349 stopTextActionMode(); 2350 mPreserveSelection = false; 2351 } 2352 2353 /** 2354 * @return True if this view supports insertion handles. 2355 */ 2356 boolean hasInsertionController() { 2357 return mInsertionControllerEnabled; 2358 } 2359 2360 /** 2361 * @return True if this view supports selection handles. 2362 */ 2363 boolean hasSelectionController() { 2364 return mSelectionControllerEnabled; 2365 } 2366 2367 private InsertionPointCursorController getInsertionController() { 2368 if (!mInsertionControllerEnabled) { 2369 return null; 2370 } 2371 2372 if (mInsertionPointCursorController == null) { 2373 mInsertionPointCursorController = new InsertionPointCursorController(); 2374 2375 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 2376 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 2377 } 2378 2379 return mInsertionPointCursorController; 2380 } 2381 2382 @Nullable 2383 SelectionModifierCursorController getSelectionController() { 2384 if (!mSelectionControllerEnabled) { 2385 return null; 2386 } 2387 2388 if (mSelectionModifierCursorController == null) { 2389 mSelectionModifierCursorController = new SelectionModifierCursorController(); 2390 2391 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 2392 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 2393 } 2394 2395 return mSelectionModifierCursorController; 2396 } 2397 2398 @VisibleForTesting 2399 @Nullable 2400 public Drawable getCursorDrawable() { 2401 return mDrawableForCursor; 2402 } 2403 2404 private void updateCursorPosition(int top, int bottom, float horizontal) { 2405 if (mDrawableForCursor == null) { 2406 mDrawableForCursor = mTextView.getContext().getDrawable( 2407 mTextView.mCursorDrawableRes); 2408 } 2409 final int left = clampHorizontalPosition(mDrawableForCursor, horizontal); 2410 final int width = mDrawableForCursor.getIntrinsicWidth(); 2411 mDrawableForCursor.setBounds(left, top - mTempRect.top, left + width, 2412 bottom + mTempRect.bottom); 2413 } 2414 2415 /** 2416 * Return clamped position for the drawable. If the drawable is within the boundaries of the 2417 * view, then it is offset with the left padding of the cursor drawable. If the drawable is at 2418 * the beginning or the end of the text then its drawable edge is aligned with left or right of 2419 * the view boundary. If the drawable is null, horizontal parameter is aligned to left or right 2420 * of the view. 2421 * 2422 * @param drawable Drawable. Can be null. 2423 * @param horizontal Horizontal position for the drawable. 2424 * @return The clamped horizontal position for the drawable. 2425 */ 2426 private int clampHorizontalPosition(@Nullable final Drawable drawable, float horizontal) { 2427 horizontal = Math.max(0.5f, horizontal - 0.5f); 2428 if (mTempRect == null) mTempRect = new Rect(); 2429 2430 int drawableWidth = 0; 2431 if (drawable != null) { 2432 drawable.getPadding(mTempRect); 2433 drawableWidth = drawable.getIntrinsicWidth(); 2434 } else { 2435 mTempRect.setEmpty(); 2436 } 2437 2438 int scrollX = mTextView.getScrollX(); 2439 float horizontalDiff = horizontal - scrollX; 2440 int viewClippedWidth = mTextView.getWidth() - mTextView.getCompoundPaddingLeft() 2441 - mTextView.getCompoundPaddingRight(); 2442 2443 final int left; 2444 if (horizontalDiff >= (viewClippedWidth - 1f)) { 2445 // at the rightmost position 2446 left = viewClippedWidth + scrollX - (drawableWidth - mTempRect.right); 2447 } else if (Math.abs(horizontalDiff) <= 1f 2448 || (TextUtils.isEmpty(mTextView.getText()) 2449 && (TextView.VERY_WIDE - scrollX) <= (viewClippedWidth + 1f) 2450 && horizontal <= 1f)) { 2451 // at the leftmost position 2452 left = scrollX - mTempRect.left; 2453 } else { 2454 left = (int) horizontal - mTempRect.left; 2455 } 2456 return left; 2457 } 2458 2459 /** 2460 * Called by the framework in response to a text auto-correction (such as fixing a typo using a 2461 * a dictionary) from the current input method, provided by it calling 2462 * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default 2463 * implementation flashes the background of the corrected word to provide feedback to the user. 2464 * 2465 * @param info The auto correct info about the text that was corrected. 2466 */ 2467 public void onCommitCorrection(CorrectionInfo info) { 2468 if (mCorrectionHighlighter == null) { 2469 mCorrectionHighlighter = new CorrectionHighlighter(); 2470 } else { 2471 mCorrectionHighlighter.invalidate(false); 2472 } 2473 2474 mCorrectionHighlighter.highlight(info); 2475 mUndoInputFilter.freezeLastEdit(); 2476 } 2477 2478 void onScrollChanged() { 2479 if (mPositionListener != null) { 2480 mPositionListener.onScrollChanged(); 2481 } 2482 if (mTextActionMode != null) { 2483 mTextActionMode.invalidateContentRect(); 2484 } 2485 } 2486 2487 /** 2488 * @return True when the TextView isFocused and has a valid zero-length selection (cursor). 2489 */ 2490 private boolean shouldBlink() { 2491 if (!isCursorVisible() || !mTextView.isFocused()) return false; 2492 2493 final int start = mTextView.getSelectionStart(); 2494 if (start < 0) return false; 2495 2496 final int end = mTextView.getSelectionEnd(); 2497 if (end < 0) return false; 2498 2499 return start == end; 2500 } 2501 2502 void makeBlink() { 2503 if (shouldBlink()) { 2504 mShowCursor = SystemClock.uptimeMillis(); 2505 if (mBlink == null) mBlink = new Blink(); 2506 mTextView.removeCallbacks(mBlink); 2507 mTextView.postDelayed(mBlink, BLINK); 2508 } else { 2509 if (mBlink != null) mTextView.removeCallbacks(mBlink); 2510 } 2511 } 2512 2513 private class Blink implements Runnable { 2514 private boolean mCancelled; 2515 2516 public void run() { 2517 if (mCancelled) { 2518 return; 2519 } 2520 2521 mTextView.removeCallbacks(this); 2522 2523 if (shouldBlink()) { 2524 if (mTextView.getLayout() != null) { 2525 mTextView.invalidateCursorPath(); 2526 } 2527 2528 mTextView.postDelayed(this, BLINK); 2529 } 2530 } 2531 2532 void cancel() { 2533 if (!mCancelled) { 2534 mTextView.removeCallbacks(this); 2535 mCancelled = true; 2536 } 2537 } 2538 2539 void uncancel() { 2540 mCancelled = false; 2541 } 2542 } 2543 2544 private DragShadowBuilder getTextThumbnailBuilder(int start, int end) { 2545 TextView shadowView = (TextView) View.inflate(mTextView.getContext(), 2546 com.android.internal.R.layout.text_drag_thumbnail, null); 2547 2548 if (shadowView == null) { 2549 throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); 2550 } 2551 2552 if (end - start > DRAG_SHADOW_MAX_TEXT_LENGTH) { 2553 final long range = getCharClusterRange(start + DRAG_SHADOW_MAX_TEXT_LENGTH); 2554 end = TextUtils.unpackRangeEndFromLong(range); 2555 } 2556 final CharSequence text = mTextView.getTransformedText(start, end); 2557 shadowView.setText(text); 2558 shadowView.setTextColor(mTextView.getTextColors()); 2559 2560 shadowView.setTextAppearance(R.styleable.Theme_textAppearanceLarge); 2561 shadowView.setGravity(Gravity.CENTER); 2562 2563 shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2564 ViewGroup.LayoutParams.WRAP_CONTENT)); 2565 2566 final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); 2567 shadowView.measure(size, size); 2568 2569 shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight()); 2570 shadowView.invalidate(); 2571 return new DragShadowBuilder(shadowView); 2572 } 2573 2574 private static class DragLocalState { 2575 public TextView sourceTextView; 2576 public int start, end; 2577 2578 public DragLocalState(TextView sourceTextView, int start, int end) { 2579 this.sourceTextView = sourceTextView; 2580 this.start = start; 2581 this.end = end; 2582 } 2583 } 2584 2585 void onDrop(DragEvent event) { 2586 SpannableStringBuilder content = new SpannableStringBuilder(); 2587 2588 final DragAndDropPermissions permissions = DragAndDropPermissions.obtain(event); 2589 if (permissions != null) { 2590 permissions.takeTransient(); 2591 } 2592 2593 try { 2594 ClipData clipData = event.getClipData(); 2595 final int itemCount = clipData.getItemCount(); 2596 for (int i = 0; i < itemCount; i++) { 2597 Item item = clipData.getItemAt(i); 2598 content.append(item.coerceToStyledText(mTextView.getContext())); 2599 } 2600 } finally { 2601 if (permissions != null) { 2602 permissions.release(); 2603 } 2604 } 2605 2606 mTextView.beginBatchEdit(); 2607 mUndoInputFilter.freezeLastEdit(); 2608 try { 2609 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 2610 Object localState = event.getLocalState(); 2611 DragLocalState dragLocalState = null; 2612 if (localState instanceof DragLocalState) { 2613 dragLocalState = (DragLocalState) localState; 2614 } 2615 boolean dragDropIntoItself = dragLocalState != null 2616 && dragLocalState.sourceTextView == mTextView; 2617 2618 if (dragDropIntoItself) { 2619 if (offset >= dragLocalState.start && offset < dragLocalState.end) { 2620 // A drop inside the original selection discards the drop. 2621 return; 2622 } 2623 } 2624 2625 final int originalLength = mTextView.getText().length(); 2626 int min = offset; 2627 int max = offset; 2628 2629 Selection.setSelection((Spannable) mTextView.getText(), max); 2630 mTextView.replaceText_internal(min, max, content); 2631 2632 if (dragDropIntoItself) { 2633 int dragSourceStart = dragLocalState.start; 2634 int dragSourceEnd = dragLocalState.end; 2635 if (max <= dragSourceStart) { 2636 // Inserting text before selection has shifted positions 2637 final int shift = mTextView.getText().length() - originalLength; 2638 dragSourceStart += shift; 2639 dragSourceEnd += shift; 2640 } 2641 2642 // Delete original selection 2643 mTextView.deleteText_internal(dragSourceStart, dragSourceEnd); 2644 2645 // Make sure we do not leave two adjacent spaces. 2646 final int prevCharIdx = Math.max(0, dragSourceStart - 1); 2647 final int nextCharIdx = Math.min(mTextView.getText().length(), dragSourceStart + 1); 2648 if (nextCharIdx > prevCharIdx + 1) { 2649 CharSequence t = mTextView.getTransformedText(prevCharIdx, nextCharIdx); 2650 if (Character.isSpaceChar(t.charAt(0)) && Character.isSpaceChar(t.charAt(1))) { 2651 mTextView.deleteText_internal(prevCharIdx, prevCharIdx + 1); 2652 } 2653 } 2654 } 2655 } finally { 2656 mTextView.endBatchEdit(); 2657 mUndoInputFilter.freezeLastEdit(); 2658 } 2659 } 2660 2661 public void addSpanWatchers(Spannable text) { 2662 final int textLength = text.length(); 2663 2664 if (mKeyListener != null) { 2665 text.setSpan(mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2666 } 2667 2668 if (mSpanController == null) { 2669 mSpanController = new SpanController(); 2670 } 2671 text.setSpan(mSpanController, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2672 } 2673 2674 void setContextMenuAnchor(float x, float y) { 2675 mContextMenuAnchorX = x; 2676 mContextMenuAnchorY = y; 2677 } 2678 2679 void onCreateContextMenu(ContextMenu menu) { 2680 if (mIsBeingLongClicked || Float.isNaN(mContextMenuAnchorX) 2681 || Float.isNaN(mContextMenuAnchorY)) { 2682 return; 2683 } 2684 final int offset = mTextView.getOffsetForPosition(mContextMenuAnchorX, mContextMenuAnchorY); 2685 if (offset == -1) { 2686 return; 2687 } 2688 2689 stopTextActionModeWithPreservingSelection(); 2690 if (mTextView.canSelectText()) { 2691 final boolean isOnSelection = mTextView.hasSelection() 2692 && offset >= mTextView.getSelectionStart() 2693 && offset <= mTextView.getSelectionEnd(); 2694 if (!isOnSelection) { 2695 // Right clicked position is not on the selection. Remove the selection and move the 2696 // cursor to the right clicked position. 2697 Selection.setSelection((Spannable) mTextView.getText(), offset); 2698 stopTextActionMode(); 2699 } 2700 } 2701 2702 if (shouldOfferToShowSuggestions()) { 2703 final SuggestionInfo[] suggestionInfoArray = 2704 new SuggestionInfo[SuggestionSpan.SUGGESTIONS_MAX_SIZE]; 2705 for (int i = 0; i < suggestionInfoArray.length; i++) { 2706 suggestionInfoArray[i] = new SuggestionInfo(); 2707 } 2708 final SubMenu subMenu = menu.addSubMenu(Menu.NONE, Menu.NONE, MENU_ITEM_ORDER_REPLACE, 2709 com.android.internal.R.string.replace); 2710 final int numItems = mSuggestionHelper.getSuggestionInfo(suggestionInfoArray, null); 2711 for (int i = 0; i < numItems; i++) { 2712 final SuggestionInfo info = suggestionInfoArray[i]; 2713 subMenu.add(Menu.NONE, Menu.NONE, i, info.mText) 2714 .setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() { 2715 @Override 2716 public boolean onMenuItemClick(MenuItem item) { 2717 replaceWithSuggestion(info); 2718 return true; 2719 } 2720 }); 2721 } 2722 } 2723 2724 menu.add(Menu.NONE, TextView.ID_UNDO, MENU_ITEM_ORDER_UNDO, 2725 com.android.internal.R.string.undo) 2726 .setAlphabeticShortcut('z') 2727 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2728 .setEnabled(mTextView.canUndo()); 2729 menu.add(Menu.NONE, TextView.ID_REDO, MENU_ITEM_ORDER_REDO, 2730 com.android.internal.R.string.redo) 2731 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2732 .setEnabled(mTextView.canRedo()); 2733 2734 menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, 2735 com.android.internal.R.string.cut) 2736 .setAlphabeticShortcut('x') 2737 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2738 .setEnabled(mTextView.canCut()); 2739 menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, 2740 com.android.internal.R.string.copy) 2741 .setAlphabeticShortcut('c') 2742 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2743 .setEnabled(mTextView.canCopy()); 2744 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, 2745 com.android.internal.R.string.paste) 2746 .setAlphabeticShortcut('v') 2747 .setEnabled(mTextView.canPaste()) 2748 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2749 menu.add(Menu.NONE, TextView.ID_PASTE_AS_PLAIN_TEXT, MENU_ITEM_ORDER_PASTE_AS_PLAIN_TEXT, 2750 com.android.internal.R.string.paste_as_plain_text) 2751 .setEnabled(mTextView.canPasteAsPlainText()) 2752 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2753 menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, 2754 com.android.internal.R.string.share) 2755 .setEnabled(mTextView.canShare()) 2756 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2757 menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, 2758 com.android.internal.R.string.selectAll) 2759 .setAlphabeticShortcut('a') 2760 .setEnabled(mTextView.canSelectAllText()) 2761 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2762 menu.add(Menu.NONE, TextView.ID_AUTOFILL, MENU_ITEM_ORDER_AUTOFILL, 2763 android.R.string.autofill) 2764 .setEnabled(mTextView.canRequestAutofill()) 2765 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2766 2767 mPreserveSelection = true; 2768 } 2769 2770 @Nullable 2771 private SuggestionSpan findEquivalentSuggestionSpan( 2772 @NonNull SuggestionSpanInfo suggestionSpanInfo) { 2773 final Editable editable = (Editable) mTextView.getText(); 2774 if (editable.getSpanStart(suggestionSpanInfo.mSuggestionSpan) >= 0) { 2775 // Exactly same span is found. 2776 return suggestionSpanInfo.mSuggestionSpan; 2777 } 2778 // Suggestion span couldn't be found. Try to find a suggestion span that has the same 2779 // contents. 2780 final SuggestionSpan[] suggestionSpans = editable.getSpans(suggestionSpanInfo.mSpanStart, 2781 suggestionSpanInfo.mSpanEnd, SuggestionSpan.class); 2782 for (final SuggestionSpan suggestionSpan : suggestionSpans) { 2783 final int start = editable.getSpanStart(suggestionSpan); 2784 if (start != suggestionSpanInfo.mSpanStart) { 2785 continue; 2786 } 2787 final int end = editable.getSpanEnd(suggestionSpan); 2788 if (end != suggestionSpanInfo.mSpanEnd) { 2789 continue; 2790 } 2791 if (suggestionSpan.equals(suggestionSpanInfo.mSuggestionSpan)) { 2792 return suggestionSpan; 2793 } 2794 } 2795 return null; 2796 } 2797 2798 private void replaceWithSuggestion(@NonNull final SuggestionInfo suggestionInfo) { 2799 final SuggestionSpan targetSuggestionSpan = findEquivalentSuggestionSpan( 2800 suggestionInfo.mSuggestionSpanInfo); 2801 if (targetSuggestionSpan == null) { 2802 // Span has been removed 2803 return; 2804 } 2805 final Editable editable = (Editable) mTextView.getText(); 2806 final int spanStart = editable.getSpanStart(targetSuggestionSpan); 2807 final int spanEnd = editable.getSpanEnd(targetSuggestionSpan); 2808 if (spanStart < 0 || spanEnd <= spanStart) { 2809 // Span has been removed 2810 return; 2811 } 2812 2813 final String originalText = TextUtils.substring(editable, spanStart, spanEnd); 2814 // SuggestionSpans are removed by replace: save them before 2815 SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd, 2816 SuggestionSpan.class); 2817 final int length = suggestionSpans.length; 2818 int[] suggestionSpansStarts = new int[length]; 2819 int[] suggestionSpansEnds = new int[length]; 2820 int[] suggestionSpansFlags = new int[length]; 2821 for (int i = 0; i < length; i++) { 2822 final SuggestionSpan suggestionSpan = suggestionSpans[i]; 2823 suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan); 2824 suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan); 2825 suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan); 2826 2827 // Remove potential misspelled flags 2828 int suggestionSpanFlags = suggestionSpan.getFlags(); 2829 if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) != 0) { 2830 suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED; 2831 suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 2832 suggestionSpan.setFlags(suggestionSpanFlags); 2833 } 2834 } 2835 2836 // Notify source IME of the suggestion pick. Do this before swapping texts. 2837 targetSuggestionSpan.notifySelection( 2838 mTextView.getContext(), originalText, suggestionInfo.mSuggestionIndex); 2839 2840 // Swap text content between actual text and Suggestion span 2841 final int suggestionStart = suggestionInfo.mSuggestionStart; 2842 final int suggestionEnd = suggestionInfo.mSuggestionEnd; 2843 final String suggestion = suggestionInfo.mText.subSequence( 2844 suggestionStart, suggestionEnd).toString(); 2845 mTextView.replaceText_internal(spanStart, spanEnd, suggestion); 2846 2847 String[] suggestions = targetSuggestionSpan.getSuggestions(); 2848 suggestions[suggestionInfo.mSuggestionIndex] = originalText; 2849 2850 // Restore previous SuggestionSpans 2851 final int lengthDelta = suggestion.length() - (spanEnd - spanStart); 2852 for (int i = 0; i < length; i++) { 2853 // Only spans that include the modified region make sense after replacement 2854 // Spans partially included in the replaced region are removed, there is no 2855 // way to assign them a valid range after replacement 2856 if (suggestionSpansStarts[i] <= spanStart && suggestionSpansEnds[i] >= spanEnd) { 2857 mTextView.setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i], 2858 suggestionSpansEnds[i] + lengthDelta, suggestionSpansFlags[i]); 2859 } 2860 } 2861 // Move cursor at the end of the replaced word 2862 final int newCursorPosition = spanEnd + lengthDelta; 2863 mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); 2864 } 2865 2866 private final MenuItem.OnMenuItemClickListener mOnContextMenuItemClickListener = 2867 new MenuItem.OnMenuItemClickListener() { 2868 @Override 2869 public boolean onMenuItemClick(MenuItem item) { 2870 if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { 2871 return true; 2872 } 2873 return mTextView.onTextContextMenuItem(item.getItemId()); 2874 } 2875 }; 2876 2877 /** 2878 * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related 2879 * pop-up should be displayed. 2880 * Also monitors {@link Selection} to call back to the attached input method. 2881 */ 2882 private class SpanController implements SpanWatcher { 2883 2884 private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs 2885 2886 private EasyEditPopupWindow mPopupWindow; 2887 2888 private Runnable mHidePopup; 2889 2890 // This function is pure but inner classes can't have static functions 2891 private boolean isNonIntermediateSelectionSpan(final Spannable text, 2892 final Object span) { 2893 return (Selection.SELECTION_START == span || Selection.SELECTION_END == span) 2894 && (text.getSpanFlags(span) & Spanned.SPAN_INTERMEDIATE) == 0; 2895 } 2896 2897 @Override 2898 public void onSpanAdded(Spannable text, Object span, int start, int end) { 2899 if (isNonIntermediateSelectionSpan(text, span)) { 2900 sendUpdateSelection(); 2901 } else if (span instanceof EasyEditSpan) { 2902 if (mPopupWindow == null) { 2903 mPopupWindow = new EasyEditPopupWindow(); 2904 mHidePopup = new Runnable() { 2905 @Override 2906 public void run() { 2907 hide(); 2908 } 2909 }; 2910 } 2911 2912 // Make sure there is only at most one EasyEditSpan in the text 2913 if (mPopupWindow.mEasyEditSpan != null) { 2914 mPopupWindow.mEasyEditSpan.setDeleteEnabled(false); 2915 } 2916 2917 mPopupWindow.setEasyEditSpan((EasyEditSpan) span); 2918 mPopupWindow.setOnDeleteListener(new EasyEditDeleteListener() { 2919 @Override 2920 public void onDeleteClick(EasyEditSpan span) { 2921 Editable editable = (Editable) mTextView.getText(); 2922 int start = editable.getSpanStart(span); 2923 int end = editable.getSpanEnd(span); 2924 if (start >= 0 && end >= 0) { 2925 sendEasySpanNotification(EasyEditSpan.TEXT_DELETED, span); 2926 mTextView.deleteText_internal(start, end); 2927 } 2928 editable.removeSpan(span); 2929 } 2930 }); 2931 2932 if (mTextView.getWindowVisibility() != View.VISIBLE) { 2933 // The window is not visible yet, ignore the text change. 2934 return; 2935 } 2936 2937 if (mTextView.getLayout() == null) { 2938 // The view has not been laid out yet, ignore the text change 2939 return; 2940 } 2941 2942 if (extractedTextModeWillBeStarted()) { 2943 // The input is in extract mode. Do not handle the easy edit in 2944 // the original TextView, as the ExtractEditText will do 2945 return; 2946 } 2947 2948 mPopupWindow.show(); 2949 mTextView.removeCallbacks(mHidePopup); 2950 mTextView.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS); 2951 } 2952 } 2953 2954 @Override 2955 public void onSpanRemoved(Spannable text, Object span, int start, int end) { 2956 if (isNonIntermediateSelectionSpan(text, span)) { 2957 sendUpdateSelection(); 2958 } else if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { 2959 hide(); 2960 } 2961 } 2962 2963 @Override 2964 public void onSpanChanged(Spannable text, Object span, int previousStart, int previousEnd, 2965 int newStart, int newEnd) { 2966 if (isNonIntermediateSelectionSpan(text, span)) { 2967 sendUpdateSelection(); 2968 } else if (mPopupWindow != null && span instanceof EasyEditSpan) { 2969 EasyEditSpan easyEditSpan = (EasyEditSpan) span; 2970 sendEasySpanNotification(EasyEditSpan.TEXT_MODIFIED, easyEditSpan); 2971 text.removeSpan(easyEditSpan); 2972 } 2973 } 2974 2975 public void hide() { 2976 if (mPopupWindow != null) { 2977 mPopupWindow.hide(); 2978 mTextView.removeCallbacks(mHidePopup); 2979 } 2980 } 2981 2982 private void sendEasySpanNotification(int textChangedType, EasyEditSpan span) { 2983 try { 2984 PendingIntent pendingIntent = span.getPendingIntent(); 2985 if (pendingIntent != null) { 2986 Intent intent = new Intent(); 2987 intent.putExtra(EasyEditSpan.EXTRA_TEXT_CHANGED_TYPE, textChangedType); 2988 pendingIntent.send(mTextView.getContext(), 0, intent); 2989 } 2990 } catch (CanceledException e) { 2991 // This should not happen, as we should try to send the intent only once. 2992 Log.w(TAG, "PendingIntent for notification cannot be sent", e); 2993 } 2994 } 2995 } 2996 2997 /** 2998 * Listens for the delete event triggered by {@link EasyEditPopupWindow}. 2999 */ 3000 private interface EasyEditDeleteListener { 3001 3002 /** 3003 * Clicks the delete pop-up. 3004 */ 3005 void onDeleteClick(EasyEditSpan span); 3006 } 3007 3008 /** 3009 * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled 3010 * by {@link SpanController}. 3011 */ 3012 private class EasyEditPopupWindow extends PinnedPopupWindow 3013 implements OnClickListener { 3014 private static final int POPUP_TEXT_LAYOUT = 3015 com.android.internal.R.layout.text_edit_action_popup_text; 3016 private TextView mDeleteTextView; 3017 private EasyEditSpan mEasyEditSpan; 3018 private EasyEditDeleteListener mOnDeleteListener; 3019 3020 @Override 3021 protected void createPopupWindow() { 3022 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 3023 com.android.internal.R.attr.textSelectHandleWindowStyle); 3024 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 3025 mPopupWindow.setClippingEnabled(true); 3026 } 3027 3028 @Override 3029 protected void initContentView() { 3030 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 3031 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 3032 mContentView = linearLayout; 3033 mContentView.setBackgroundResource( 3034 com.android.internal.R.drawable.text_edit_side_paste_window); 3035 3036 LayoutInflater inflater = (LayoutInflater) mTextView.getContext() 3037 .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 3038 3039 LayoutParams wrapContent = new LayoutParams( 3040 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 3041 3042 mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 3043 mDeleteTextView.setLayoutParams(wrapContent); 3044 mDeleteTextView.setText(com.android.internal.R.string.delete); 3045 mDeleteTextView.setOnClickListener(this); 3046 mContentView.addView(mDeleteTextView); 3047 } 3048 3049 public void setEasyEditSpan(EasyEditSpan easyEditSpan) { 3050 mEasyEditSpan = easyEditSpan; 3051 } 3052 3053 private void setOnDeleteListener(EasyEditDeleteListener listener) { 3054 mOnDeleteListener = listener; 3055 } 3056 3057 @Override 3058 public void onClick(View view) { 3059 if (view == mDeleteTextView 3060 && mEasyEditSpan != null && mEasyEditSpan.isDeleteEnabled() 3061 && mOnDeleteListener != null) { 3062 mOnDeleteListener.onDeleteClick(mEasyEditSpan); 3063 } 3064 } 3065 3066 @Override 3067 public void hide() { 3068 if (mEasyEditSpan != null) { 3069 mEasyEditSpan.setDeleteEnabled(false); 3070 } 3071 mOnDeleteListener = null; 3072 super.hide(); 3073 } 3074 3075 @Override 3076 protected int getTextOffset() { 3077 // Place the pop-up at the end of the span 3078 Editable editable = (Editable) mTextView.getText(); 3079 return editable.getSpanEnd(mEasyEditSpan); 3080 } 3081 3082 @Override 3083 protected int getVerticalLocalPosition(int line) { 3084 final Layout layout = mTextView.getLayout(); 3085 return layout.getLineBottomWithoutSpacing(line); 3086 } 3087 3088 @Override 3089 protected int clipVertically(int positionY) { 3090 // As we display the pop-up below the span, no vertical clipping is required. 3091 return positionY; 3092 } 3093 } 3094 3095 private class PositionListener implements ViewTreeObserver.OnPreDrawListener { 3096 // 3 handles 3097 // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others) 3098 // 1 CursorAnchorInfoNotifier 3099 private static final int MAXIMUM_NUMBER_OF_LISTENERS = 7; 3100 private TextViewPositionListener[] mPositionListeners = 3101 new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS]; 3102 private boolean[] mCanMove = new boolean[MAXIMUM_NUMBER_OF_LISTENERS]; 3103 private boolean mPositionHasChanged = true; 3104 // Absolute position of the TextView with respect to its parent window 3105 private int mPositionX, mPositionY; 3106 private int mPositionXOnScreen, mPositionYOnScreen; 3107 private int mNumberOfListeners; 3108 private boolean mScrollHasChanged; 3109 final int[] mTempCoords = new int[2]; 3110 3111 public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) { 3112 if (mNumberOfListeners == 0) { 3113 updatePosition(); 3114 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 3115 vto.addOnPreDrawListener(this); 3116 } 3117 3118 int emptySlotIndex = -1; 3119 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 3120 TextViewPositionListener listener = mPositionListeners[i]; 3121 if (listener == positionListener) { 3122 return; 3123 } else if (emptySlotIndex < 0 && listener == null) { 3124 emptySlotIndex = i; 3125 } 3126 } 3127 3128 mPositionListeners[emptySlotIndex] = positionListener; 3129 mCanMove[emptySlotIndex] = canMove; 3130 mNumberOfListeners++; 3131 } 3132 3133 public void removeSubscriber(TextViewPositionListener positionListener) { 3134 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 3135 if (mPositionListeners[i] == positionListener) { 3136 mPositionListeners[i] = null; 3137 mNumberOfListeners--; 3138 break; 3139 } 3140 } 3141 3142 if (mNumberOfListeners == 0) { 3143 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 3144 vto.removeOnPreDrawListener(this); 3145 } 3146 } 3147 3148 public int getPositionX() { 3149 return mPositionX; 3150 } 3151 3152 public int getPositionY() { 3153 return mPositionY; 3154 } 3155 3156 public int getPositionXOnScreen() { 3157 return mPositionXOnScreen; 3158 } 3159 3160 public int getPositionYOnScreen() { 3161 return mPositionYOnScreen; 3162 } 3163 3164 @Override 3165 public boolean onPreDraw() { 3166 updatePosition(); 3167 3168 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 3169 if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) { 3170 TextViewPositionListener positionListener = mPositionListeners[i]; 3171 if (positionListener != null) { 3172 positionListener.updatePosition(mPositionX, mPositionY, 3173 mPositionHasChanged, mScrollHasChanged); 3174 } 3175 } 3176 } 3177 3178 mScrollHasChanged = false; 3179 return true; 3180 } 3181 3182 private void updatePosition() { 3183 mTextView.getLocationInWindow(mTempCoords); 3184 3185 mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY; 3186 3187 mPositionX = mTempCoords[0]; 3188 mPositionY = mTempCoords[1]; 3189 3190 mTextView.getLocationOnScreen(mTempCoords); 3191 3192 mPositionXOnScreen = mTempCoords[0]; 3193 mPositionYOnScreen = mTempCoords[1]; 3194 } 3195 3196 public void onScrollChanged() { 3197 mScrollHasChanged = true; 3198 } 3199 } 3200 3201 private abstract class PinnedPopupWindow implements TextViewPositionListener { 3202 protected PopupWindow mPopupWindow; 3203 protected ViewGroup mContentView; 3204 int mPositionX, mPositionY; 3205 int mClippingLimitLeft, mClippingLimitRight; 3206 3207 protected abstract void createPopupWindow(); 3208 protected abstract void initContentView(); 3209 protected abstract int getTextOffset(); 3210 protected abstract int getVerticalLocalPosition(int line); 3211 protected abstract int clipVertically(int positionY); 3212 protected void setUp() { 3213 } 3214 3215 public PinnedPopupWindow() { 3216 // Due to calling subclass methods in base constructor, subclass constructor is not 3217 // called before subclass methods, e.g. createPopupWindow or initContentView. To give 3218 // a chance to initialize subclasses, call setUp() method here. 3219 // TODO: It is good to extract non trivial initialization code from constructor. 3220 setUp(); 3221 3222 createPopupWindow(); 3223 3224 mPopupWindow.setWindowLayoutType( 3225 WindowManager.LayoutParams.TYPE_APPLICATION_ABOVE_SUB_PANEL); 3226 mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 3227 mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 3228 3229 initContentView(); 3230 3231 LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 3232 ViewGroup.LayoutParams.WRAP_CONTENT); 3233 mContentView.setLayoutParams(wrapContent); 3234 3235 mPopupWindow.setContentView(mContentView); 3236 } 3237 3238 public void show() { 3239 getPositionListener().addSubscriber(this, false /* offset is fixed */); 3240 3241 computeLocalPosition(); 3242 3243 final PositionListener positionListener = getPositionListener(); 3244 updatePosition(positionListener.getPositionX(), positionListener.getPositionY()); 3245 } 3246 3247 protected void measureContent() { 3248 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3249 mContentView.measure( 3250 View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, 3251 View.MeasureSpec.AT_MOST), 3252 View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, 3253 View.MeasureSpec.AT_MOST)); 3254 } 3255 3256 /* The popup window will be horizontally centered on the getTextOffset() and vertically 3257 * positioned according to viewportToContentHorizontalOffset. 3258 * 3259 * This method assumes that mContentView has properly been measured from its content. */ 3260 private void computeLocalPosition() { 3261 measureContent(); 3262 final int width = mContentView.getMeasuredWidth(); 3263 final int offset = getTextOffset(); 3264 mPositionX = (int) (mTextView.getLayout().getPrimaryHorizontal(offset) - width / 2.0f); 3265 mPositionX += mTextView.viewportToContentHorizontalOffset(); 3266 3267 final int line = mTextView.getLayout().getLineForOffset(offset); 3268 mPositionY = getVerticalLocalPosition(line); 3269 mPositionY += mTextView.viewportToContentVerticalOffset(); 3270 } 3271 3272 private void updatePosition(int parentPositionX, int parentPositionY) { 3273 int positionX = parentPositionX + mPositionX; 3274 int positionY = parentPositionY + mPositionY; 3275 3276 positionY = clipVertically(positionY); 3277 3278 // Horizontal clipping 3279 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3280 final int width = mContentView.getMeasuredWidth(); 3281 positionX = Math.min( 3282 displayMetrics.widthPixels - width + mClippingLimitRight, positionX); 3283 positionX = Math.max(-mClippingLimitLeft, positionX); 3284 3285 if (isShowing()) { 3286 mPopupWindow.update(positionX, positionY, -1, -1); 3287 } else { 3288 mPopupWindow.showAtLocation(mTextView, Gravity.NO_GRAVITY, 3289 positionX, positionY); 3290 } 3291 } 3292 3293 public void hide() { 3294 if (!isShowing()) { 3295 return; 3296 } 3297 mPopupWindow.dismiss(); 3298 getPositionListener().removeSubscriber(this); 3299 } 3300 3301 @Override 3302 public void updatePosition(int parentPositionX, int parentPositionY, 3303 boolean parentPositionChanged, boolean parentScrolled) { 3304 // Either parentPositionChanged or parentScrolled is true, check if still visible 3305 if (isShowing() && isOffsetVisible(getTextOffset())) { 3306 if (parentScrolled) computeLocalPosition(); 3307 updatePosition(parentPositionX, parentPositionY); 3308 } else { 3309 hide(); 3310 } 3311 } 3312 3313 public boolean isShowing() { 3314 return mPopupWindow.isShowing(); 3315 } 3316 } 3317 3318 private static final class SuggestionInfo { 3319 // Range of actual suggestion within mText 3320 int mSuggestionStart, mSuggestionEnd; 3321 3322 // The SuggestionSpan that this TextView represents 3323 final SuggestionSpanInfo mSuggestionSpanInfo = new SuggestionSpanInfo(); 3324 3325 // The index of this suggestion inside suggestionSpan 3326 int mSuggestionIndex; 3327 3328 final SpannableStringBuilder mText = new SpannableStringBuilder(); 3329 3330 void clear() { 3331 mSuggestionSpanInfo.clear(); 3332 mText.clear(); 3333 } 3334 3335 // Utility method to set attributes about a SuggestionSpan. 3336 void setSpanInfo(SuggestionSpan span, int spanStart, int spanEnd) { 3337 mSuggestionSpanInfo.mSuggestionSpan = span; 3338 mSuggestionSpanInfo.mSpanStart = spanStart; 3339 mSuggestionSpanInfo.mSpanEnd = spanEnd; 3340 } 3341 } 3342 3343 private static final class SuggestionSpanInfo { 3344 // The SuggestionSpan; 3345 @Nullable 3346 SuggestionSpan mSuggestionSpan; 3347 3348 // The SuggestionSpan start position 3349 int mSpanStart; 3350 3351 // The SuggestionSpan end position 3352 int mSpanEnd; 3353 3354 void clear() { 3355 mSuggestionSpan = null; 3356 } 3357 } 3358 3359 private class SuggestionHelper { 3360 private final Comparator<SuggestionSpan> mSuggestionSpanComparator = 3361 new SuggestionSpanComparator(); 3362 private final HashMap<SuggestionSpan, Integer> mSpansLengths = 3363 new HashMap<SuggestionSpan, Integer>(); 3364 3365 private class SuggestionSpanComparator implements Comparator<SuggestionSpan> { 3366 public int compare(SuggestionSpan span1, SuggestionSpan span2) { 3367 final int flag1 = span1.getFlags(); 3368 final int flag2 = span2.getFlags(); 3369 if (flag1 != flag2) { 3370 // The order here should match what is used in updateDrawState 3371 final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 3372 final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 3373 final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0; 3374 final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0; 3375 if (easy1 && !misspelled1) return -1; 3376 if (easy2 && !misspelled2) return 1; 3377 if (misspelled1) return -1; 3378 if (misspelled2) return 1; 3379 } 3380 3381 return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue(); 3382 } 3383 } 3384 3385 /** 3386 * Returns the suggestion spans that cover the current cursor position. The suggestion 3387 * spans are sorted according to the length of text that they are attached to. 3388 */ 3389 private SuggestionSpan[] getSortedSuggestionSpans() { 3390 int pos = mTextView.getSelectionStart(); 3391 Spannable spannable = (Spannable) mTextView.getText(); 3392 SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class); 3393 3394 mSpansLengths.clear(); 3395 for (SuggestionSpan suggestionSpan : suggestionSpans) { 3396 int start = spannable.getSpanStart(suggestionSpan); 3397 int end = spannable.getSpanEnd(suggestionSpan); 3398 mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start)); 3399 } 3400 3401 // The suggestions are sorted according to their types (easy correction first, then 3402 // misspelled) and to the length of the text that they cover (shorter first). 3403 Arrays.sort(suggestionSpans, mSuggestionSpanComparator); 3404 mSpansLengths.clear(); 3405 3406 return suggestionSpans; 3407 } 3408 3409 /** 3410 * Gets the SuggestionInfo list that contains suggestion information at the current cursor 3411 * position. 3412 * 3413 * @param suggestionInfos SuggestionInfo array the results will be set. 3414 * @param misspelledSpanInfo a struct the misspelled SuggestionSpan info will be set. 3415 * @return the number of suggestions actually fetched. 3416 */ 3417 public int getSuggestionInfo(SuggestionInfo[] suggestionInfos, 3418 @Nullable SuggestionSpanInfo misspelledSpanInfo) { 3419 final Spannable spannable = (Spannable) mTextView.getText(); 3420 final SuggestionSpan[] suggestionSpans = getSortedSuggestionSpans(); 3421 final int nbSpans = suggestionSpans.length; 3422 if (nbSpans == 0) return 0; 3423 3424 int numberOfSuggestions = 0; 3425 for (final SuggestionSpan suggestionSpan : suggestionSpans) { 3426 final int spanStart = spannable.getSpanStart(suggestionSpan); 3427 final int spanEnd = spannable.getSpanEnd(suggestionSpan); 3428 3429 if (misspelledSpanInfo != null 3430 && (suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) { 3431 misspelledSpanInfo.mSuggestionSpan = suggestionSpan; 3432 misspelledSpanInfo.mSpanStart = spanStart; 3433 misspelledSpanInfo.mSpanEnd = spanEnd; 3434 } 3435 3436 final String[] suggestions = suggestionSpan.getSuggestions(); 3437 final int nbSuggestions = suggestions.length; 3438 suggestionLoop: 3439 for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) { 3440 final String suggestion = suggestions[suggestionIndex]; 3441 for (int i = 0; i < numberOfSuggestions; i++) { 3442 final SuggestionInfo otherSuggestionInfo = suggestionInfos[i]; 3443 if (otherSuggestionInfo.mText.toString().equals(suggestion)) { 3444 final int otherSpanStart = 3445 otherSuggestionInfo.mSuggestionSpanInfo.mSpanStart; 3446 final int otherSpanEnd = 3447 otherSuggestionInfo.mSuggestionSpanInfo.mSpanEnd; 3448 if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) { 3449 continue suggestionLoop; 3450 } 3451 } 3452 } 3453 3454 SuggestionInfo suggestionInfo = suggestionInfos[numberOfSuggestions]; 3455 suggestionInfo.setSpanInfo(suggestionSpan, spanStart, spanEnd); 3456 suggestionInfo.mSuggestionIndex = suggestionIndex; 3457 suggestionInfo.mSuggestionStart = 0; 3458 suggestionInfo.mSuggestionEnd = suggestion.length(); 3459 suggestionInfo.mText.replace(0, suggestionInfo.mText.length(), suggestion); 3460 numberOfSuggestions++; 3461 if (numberOfSuggestions >= suggestionInfos.length) { 3462 return numberOfSuggestions; 3463 } 3464 } 3465 } 3466 return numberOfSuggestions; 3467 } 3468 } 3469 3470 @VisibleForTesting 3471 public class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener { 3472 private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE; 3473 3474 // Key of intent extras for inserting new word into user dictionary. 3475 private static final String USER_DICTIONARY_EXTRA_WORD = "word"; 3476 private static final String USER_DICTIONARY_EXTRA_LOCALE = "locale"; 3477 3478 private SuggestionInfo[] mSuggestionInfos; 3479 private int mNumberOfSuggestions; 3480 private boolean mCursorWasVisibleBeforeSuggestions; 3481 private boolean mIsShowingUp = false; 3482 private SuggestionAdapter mSuggestionsAdapter; 3483 private TextAppearanceSpan mHighlightSpan; // TODO: Make mHighlightSpan final. 3484 private TextView mAddToDictionaryButton; 3485 private TextView mDeleteButton; 3486 private ListView mSuggestionListView; 3487 private final SuggestionSpanInfo mMisspelledSpanInfo = new SuggestionSpanInfo(); 3488 private int mContainerMarginWidth; 3489 private int mContainerMarginTop; 3490 private LinearLayout mContainerView; 3491 private Context mContext; // TODO: Make mContext final. 3492 3493 private class CustomPopupWindow extends PopupWindow { 3494 3495 @Override 3496 public void dismiss() { 3497 if (!isShowing()) { 3498 return; 3499 } 3500 super.dismiss(); 3501 getPositionListener().removeSubscriber(SuggestionsPopupWindow.this); 3502 3503 // Safe cast since show() checks that mTextView.getText() is an Editable 3504 ((Spannable) mTextView.getText()).removeSpan(mSuggestionRangeSpan); 3505 3506 mTextView.setCursorVisible(mCursorWasVisibleBeforeSuggestions); 3507 if (hasInsertionController() && !extractedTextModeWillBeStarted()) { 3508 getInsertionController().show(); 3509 } 3510 } 3511 } 3512 3513 public SuggestionsPopupWindow() { 3514 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 3515 } 3516 3517 @Override 3518 protected void setUp() { 3519 mContext = applyDefaultTheme(mTextView.getContext()); 3520 mHighlightSpan = new TextAppearanceSpan(mContext, 3521 mTextView.mTextEditSuggestionHighlightStyle); 3522 } 3523 3524 private Context applyDefaultTheme(Context originalContext) { 3525 TypedArray a = originalContext.obtainStyledAttributes( 3526 new int[]{com.android.internal.R.attr.isLightTheme}); 3527 boolean isLightTheme = a.getBoolean(0, true); 3528 int themeId = isLightTheme ? R.style.ThemeOverlay_Material_Light 3529 : R.style.ThemeOverlay_Material_Dark; 3530 a.recycle(); 3531 return new ContextThemeWrapper(originalContext, themeId); 3532 } 3533 3534 @Override 3535 protected void createPopupWindow() { 3536 mPopupWindow = new CustomPopupWindow(); 3537 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 3538 mPopupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT)); 3539 mPopupWindow.setFocusable(true); 3540 mPopupWindow.setClippingEnabled(false); 3541 } 3542 3543 @Override 3544 protected void initContentView() { 3545 final LayoutInflater inflater = (LayoutInflater) mContext.getSystemService( 3546 Context.LAYOUT_INFLATER_SERVICE); 3547 mContentView = (ViewGroup) inflater.inflate( 3548 mTextView.mTextEditSuggestionContainerLayout, null); 3549 3550 mContainerView = (LinearLayout) mContentView.findViewById( 3551 com.android.internal.R.id.suggestionWindowContainer); 3552 ViewGroup.MarginLayoutParams lp = 3553 (ViewGroup.MarginLayoutParams) mContainerView.getLayoutParams(); 3554 mContainerMarginWidth = lp.leftMargin + lp.rightMargin; 3555 mContainerMarginTop = lp.topMargin; 3556 mClippingLimitLeft = lp.leftMargin; 3557 mClippingLimitRight = lp.rightMargin; 3558 3559 mSuggestionListView = (ListView) mContentView.findViewById( 3560 com.android.internal.R.id.suggestionContainer); 3561 3562 mSuggestionsAdapter = new SuggestionAdapter(); 3563 mSuggestionListView.setAdapter(mSuggestionsAdapter); 3564 mSuggestionListView.setOnItemClickListener(this); 3565 3566 // Inflate the suggestion items once and for all. 3567 mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS]; 3568 for (int i = 0; i < mSuggestionInfos.length; i++) { 3569 mSuggestionInfos[i] = new SuggestionInfo(); 3570 } 3571 3572 mAddToDictionaryButton = (TextView) mContentView.findViewById( 3573 com.android.internal.R.id.addToDictionaryButton); 3574 mAddToDictionaryButton.setOnClickListener(new View.OnClickListener() { 3575 public void onClick(View v) { 3576 final SuggestionSpan misspelledSpan = 3577 findEquivalentSuggestionSpan(mMisspelledSpanInfo); 3578 if (misspelledSpan == null) { 3579 // Span has been removed. 3580 return; 3581 } 3582 final Editable editable = (Editable) mTextView.getText(); 3583 final int spanStart = editable.getSpanStart(misspelledSpan); 3584 final int spanEnd = editable.getSpanEnd(misspelledSpan); 3585 if (spanStart < 0 || spanEnd <= spanStart) { 3586 return; 3587 } 3588 final String originalText = TextUtils.substring(editable, spanStart, spanEnd); 3589 3590 final Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT); 3591 intent.putExtra(USER_DICTIONARY_EXTRA_WORD, originalText); 3592 intent.putExtra(USER_DICTIONARY_EXTRA_LOCALE, 3593 mTextView.getTextServicesLocale().toString()); 3594 intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); 3595 mTextView.getContext().startActivity(intent); 3596 // There is no way to know if the word was indeed added. Re-check. 3597 // TODO The ExtractEditText should remove the span in the original text instead 3598 editable.removeSpan(mMisspelledSpanInfo.mSuggestionSpan); 3599 Selection.setSelection(editable, spanEnd); 3600 updateSpellCheckSpans(spanStart, spanEnd, false); 3601 hideWithCleanUp(); 3602 } 3603 }); 3604 3605 mDeleteButton = (TextView) mContentView.findViewById( 3606 com.android.internal.R.id.deleteButton); 3607 mDeleteButton.setOnClickListener(new View.OnClickListener() { 3608 public void onClick(View v) { 3609 final Editable editable = (Editable) mTextView.getText(); 3610 3611 final int spanUnionStart = editable.getSpanStart(mSuggestionRangeSpan); 3612 int spanUnionEnd = editable.getSpanEnd(mSuggestionRangeSpan); 3613 if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) { 3614 // Do not leave two adjacent spaces after deletion, or one at beginning of 3615 // text 3616 if (spanUnionEnd < editable.length() 3617 && Character.isSpaceChar(editable.charAt(spanUnionEnd)) 3618 && (spanUnionStart == 0 3619 || Character.isSpaceChar( 3620 editable.charAt(spanUnionStart - 1)))) { 3621 spanUnionEnd = spanUnionEnd + 1; 3622 } 3623 mTextView.deleteText_internal(spanUnionStart, spanUnionEnd); 3624 } 3625 hideWithCleanUp(); 3626 } 3627 }); 3628 3629 } 3630 3631 public boolean isShowingUp() { 3632 return mIsShowingUp; 3633 } 3634 3635 public void onParentLostFocus() { 3636 mIsShowingUp = false; 3637 } 3638 3639 private class SuggestionAdapter extends BaseAdapter { 3640 private LayoutInflater mInflater = (LayoutInflater) mContext.getSystemService( 3641 Context.LAYOUT_INFLATER_SERVICE); 3642 3643 @Override 3644 public int getCount() { 3645 return mNumberOfSuggestions; 3646 } 3647 3648 @Override 3649 public Object getItem(int position) { 3650 return mSuggestionInfos[position]; 3651 } 3652 3653 @Override 3654 public long getItemId(int position) { 3655 return position; 3656 } 3657 3658 @Override 3659 public View getView(int position, View convertView, ViewGroup parent) { 3660 TextView textView = (TextView) convertView; 3661 3662 if (textView == null) { 3663 textView = (TextView) mInflater.inflate(mTextView.mTextEditSuggestionItemLayout, 3664 parent, false); 3665 } 3666 3667 final SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 3668 textView.setText(suggestionInfo.mText); 3669 return textView; 3670 } 3671 } 3672 3673 @VisibleForTesting 3674 public ViewGroup getContentViewForTesting() { 3675 return mContentView; 3676 } 3677 3678 @Override 3679 public void show() { 3680 if (!(mTextView.getText() instanceof Editable)) return; 3681 if (extractedTextModeWillBeStarted()) { 3682 return; 3683 } 3684 3685 if (updateSuggestions()) { 3686 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 3687 mTextView.setCursorVisible(false); 3688 mIsShowingUp = true; 3689 super.show(); 3690 } 3691 3692 mSuggestionListView.setVisibility(mNumberOfSuggestions == 0 ? View.GONE : View.VISIBLE); 3693 } 3694 3695 @Override 3696 protected void measureContent() { 3697 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3698 final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec( 3699 displayMetrics.widthPixels, View.MeasureSpec.AT_MOST); 3700 final int verticalMeasure = View.MeasureSpec.makeMeasureSpec( 3701 displayMetrics.heightPixels, View.MeasureSpec.AT_MOST); 3702 3703 int width = 0; 3704 View view = null; 3705 for (int i = 0; i < mNumberOfSuggestions; i++) { 3706 view = mSuggestionsAdapter.getView(i, view, mContentView); 3707 view.getLayoutParams().width = LayoutParams.WRAP_CONTENT; 3708 view.measure(horizontalMeasure, verticalMeasure); 3709 width = Math.max(width, view.getMeasuredWidth()); 3710 } 3711 3712 if (mAddToDictionaryButton.getVisibility() != View.GONE) { 3713 mAddToDictionaryButton.measure(horizontalMeasure, verticalMeasure); 3714 width = Math.max(width, mAddToDictionaryButton.getMeasuredWidth()); 3715 } 3716 3717 mDeleteButton.measure(horizontalMeasure, verticalMeasure); 3718 width = Math.max(width, mDeleteButton.getMeasuredWidth()); 3719 3720 width += mContainerView.getPaddingLeft() + mContainerView.getPaddingRight() 3721 + mContainerMarginWidth; 3722 3723 // Enforce the width based on actual text widths 3724 mContentView.measure( 3725 View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY), 3726 verticalMeasure); 3727 3728 Drawable popupBackground = mPopupWindow.getBackground(); 3729 if (popupBackground != null) { 3730 if (mTempRect == null) mTempRect = new Rect(); 3731 popupBackground.getPadding(mTempRect); 3732 width += mTempRect.left + mTempRect.right; 3733 } 3734 mPopupWindow.setWidth(width); 3735 } 3736 3737 @Override 3738 protected int getTextOffset() { 3739 return (mTextView.getSelectionStart() + mTextView.getSelectionStart()) / 2; 3740 } 3741 3742 @Override 3743 protected int getVerticalLocalPosition(int line) { 3744 final Layout layout = mTextView.getLayout(); 3745 return layout.getLineBottomWithoutSpacing(line) - mContainerMarginTop; 3746 } 3747 3748 @Override 3749 protected int clipVertically(int positionY) { 3750 final int height = mContentView.getMeasuredHeight(); 3751 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3752 return Math.min(positionY, displayMetrics.heightPixels - height); 3753 } 3754 3755 private void hideWithCleanUp() { 3756 for (final SuggestionInfo info : mSuggestionInfos) { 3757 info.clear(); 3758 } 3759 mMisspelledSpanInfo.clear(); 3760 hide(); 3761 } 3762 3763 private boolean updateSuggestions() { 3764 Spannable spannable = (Spannable) mTextView.getText(); 3765 mNumberOfSuggestions = 3766 mSuggestionHelper.getSuggestionInfo(mSuggestionInfos, mMisspelledSpanInfo); 3767 if (mNumberOfSuggestions == 0 && mMisspelledSpanInfo.mSuggestionSpan == null) { 3768 return false; 3769 } 3770 3771 int spanUnionStart = mTextView.getText().length(); 3772 int spanUnionEnd = 0; 3773 3774 for (int i = 0; i < mNumberOfSuggestions; i++) { 3775 final SuggestionSpanInfo spanInfo = mSuggestionInfos[i].mSuggestionSpanInfo; 3776 spanUnionStart = Math.min(spanUnionStart, spanInfo.mSpanStart); 3777 spanUnionEnd = Math.max(spanUnionEnd, spanInfo.mSpanEnd); 3778 } 3779 if (mMisspelledSpanInfo.mSuggestionSpan != null) { 3780 spanUnionStart = Math.min(spanUnionStart, mMisspelledSpanInfo.mSpanStart); 3781 spanUnionEnd = Math.max(spanUnionEnd, mMisspelledSpanInfo.mSpanEnd); 3782 } 3783 3784 for (int i = 0; i < mNumberOfSuggestions; i++) { 3785 highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd); 3786 } 3787 3788 // Make "Add to dictionary" item visible if there is a span with the misspelled flag 3789 int addToDictionaryButtonVisibility = View.GONE; 3790 if (mMisspelledSpanInfo.mSuggestionSpan != null) { 3791 if (mMisspelledSpanInfo.mSpanStart >= 0 3792 && mMisspelledSpanInfo.mSpanEnd > mMisspelledSpanInfo.mSpanStart) { 3793 addToDictionaryButtonVisibility = View.VISIBLE; 3794 } 3795 } 3796 mAddToDictionaryButton.setVisibility(addToDictionaryButtonVisibility); 3797 3798 if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan(); 3799 final int underlineColor; 3800 if (mNumberOfSuggestions != 0) { 3801 underlineColor = 3802 mSuggestionInfos[0].mSuggestionSpanInfo.mSuggestionSpan.getUnderlineColor(); 3803 } else { 3804 underlineColor = mMisspelledSpanInfo.mSuggestionSpan.getUnderlineColor(); 3805 } 3806 3807 if (underlineColor == 0) { 3808 // Fallback on the default highlight color when the first span does not provide one 3809 mSuggestionRangeSpan.setBackgroundColor(mTextView.mHighlightColor); 3810 } else { 3811 final float BACKGROUND_TRANSPARENCY = 0.4f; 3812 final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY); 3813 mSuggestionRangeSpan.setBackgroundColor( 3814 (underlineColor & 0x00FFFFFF) + (newAlpha << 24)); 3815 } 3816 spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd, 3817 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 3818 3819 mSuggestionsAdapter.notifyDataSetChanged(); 3820 return true; 3821 } 3822 3823 private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart, 3824 int unionEnd) { 3825 final Spannable text = (Spannable) mTextView.getText(); 3826 final int spanStart = suggestionInfo.mSuggestionSpanInfo.mSpanStart; 3827 final int spanEnd = suggestionInfo.mSuggestionSpanInfo.mSpanEnd; 3828 3829 // Adjust the start/end of the suggestion span 3830 suggestionInfo.mSuggestionStart = spanStart - unionStart; 3831 suggestionInfo.mSuggestionEnd = suggestionInfo.mSuggestionStart 3832 + suggestionInfo.mText.length(); 3833 3834 suggestionInfo.mText.setSpan(mHighlightSpan, 0, suggestionInfo.mText.length(), 3835 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 3836 3837 // Add the text before and after the span. 3838 final String textAsString = text.toString(); 3839 suggestionInfo.mText.insert(0, textAsString.substring(unionStart, spanStart)); 3840 suggestionInfo.mText.append(textAsString.substring(spanEnd, unionEnd)); 3841 } 3842 3843 @Override 3844 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 3845 SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 3846 replaceWithSuggestion(suggestionInfo); 3847 hideWithCleanUp(); 3848 } 3849 } 3850 3851 /** 3852 * An ActionMode Callback class that is used to provide actions while in text insertion or 3853 * selection mode. 3854 * 3855 * The default callback provides a subset of Select All, Cut, Copy, Paste, Share and Replace 3856 * actions, depending on which of these this TextView supports and the current selection. 3857 */ 3858 private class TextActionModeCallback extends ActionMode.Callback2 { 3859 private final Path mSelectionPath = new Path(); 3860 private final RectF mSelectionBounds = new RectF(); 3861 private final boolean mHasSelection; 3862 private final int mHandleHeight; 3863 private final Map<MenuItem, OnClickListener> mAssistClickHandlers = new HashMap<>(); 3864 3865 TextActionModeCallback(@TextActionMode int mode) { 3866 mHasSelection = mode == TextActionMode.SELECTION 3867 || (mTextIsSelectable && mode == TextActionMode.TEXT_LINK); 3868 if (mHasSelection) { 3869 SelectionModifierCursorController selectionController = getSelectionController(); 3870 if (selectionController.mStartHandle == null) { 3871 // As these are for initializing selectionController, hide() must be called. 3872 selectionController.initDrawables(); 3873 selectionController.initHandles(); 3874 selectionController.hide(); 3875 } 3876 mHandleHeight = Math.max( 3877 mSelectHandleLeft.getMinimumHeight(), 3878 mSelectHandleRight.getMinimumHeight()); 3879 } else { 3880 InsertionPointCursorController insertionController = getInsertionController(); 3881 if (insertionController != null) { 3882 insertionController.getHandle(); 3883 mHandleHeight = mSelectHandleCenter.getMinimumHeight(); 3884 } else { 3885 mHandleHeight = 0; 3886 } 3887 } 3888 } 3889 3890 @Override 3891 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 3892 mAssistClickHandlers.clear(); 3893 3894 mode.setTitle(null); 3895 mode.setSubtitle(null); 3896 mode.setTitleOptionalHint(true); 3897 populateMenuWithItems(menu); 3898 3899 Callback customCallback = getCustomCallback(); 3900 if (customCallback != null) { 3901 if (!customCallback.onCreateActionMode(mode, menu)) { 3902 // The custom mode can choose to cancel the action mode, dismiss selection. 3903 Selection.setSelection((Spannable) mTextView.getText(), 3904 mTextView.getSelectionEnd()); 3905 return false; 3906 } 3907 } 3908 3909 if (mTextView.canProcessText()) { 3910 mProcessTextIntentActionsHandler.onInitializeMenu(menu); 3911 } 3912 3913 if (mHasSelection && !mTextView.hasTransientState()) { 3914 mTextView.setHasTransientState(true); 3915 } 3916 return true; 3917 } 3918 3919 private Callback getCustomCallback() { 3920 return mHasSelection 3921 ? mCustomSelectionActionModeCallback 3922 : mCustomInsertionActionModeCallback; 3923 } 3924 3925 private void populateMenuWithItems(Menu menu) { 3926 if (mTextView.canCut()) { 3927 menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, 3928 com.android.internal.R.string.cut) 3929 .setAlphabeticShortcut('x') 3930 .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3931 } 3932 3933 if (mTextView.canCopy()) { 3934 menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, 3935 com.android.internal.R.string.copy) 3936 .setAlphabeticShortcut('c') 3937 .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3938 } 3939 3940 if (mTextView.canPaste()) { 3941 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, 3942 com.android.internal.R.string.paste) 3943 .setAlphabeticShortcut('v') 3944 .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3945 } 3946 3947 if (mTextView.canShare()) { 3948 menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, 3949 com.android.internal.R.string.share) 3950 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3951 } 3952 3953 if (mTextView.canRequestAutofill()) { 3954 final String selected = mTextView.getSelectedText(); 3955 if (selected == null || selected.isEmpty()) { 3956 menu.add(Menu.NONE, TextView.ID_AUTOFILL, MENU_ITEM_ORDER_AUTOFILL, 3957 com.android.internal.R.string.autofill) 3958 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 3959 } 3960 } 3961 3962 if (mTextView.canPasteAsPlainText()) { 3963 menu.add( 3964 Menu.NONE, 3965 TextView.ID_PASTE_AS_PLAIN_TEXT, 3966 MENU_ITEM_ORDER_PASTE_AS_PLAIN_TEXT, 3967 com.android.internal.R.string.paste_as_plain_text) 3968 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3969 } 3970 3971 updateSelectAllItem(menu); 3972 updateReplaceItem(menu); 3973 updateAssistMenuItems(menu); 3974 } 3975 3976 @Override 3977 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 3978 updateSelectAllItem(menu); 3979 updateReplaceItem(menu); 3980 updateAssistMenuItems(menu); 3981 3982 Callback customCallback = getCustomCallback(); 3983 if (customCallback != null) { 3984 return customCallback.onPrepareActionMode(mode, menu); 3985 } 3986 return true; 3987 } 3988 3989 private void updateSelectAllItem(Menu menu) { 3990 boolean canSelectAll = mTextView.canSelectAllText(); 3991 boolean selectAllItemExists = menu.findItem(TextView.ID_SELECT_ALL) != null; 3992 if (canSelectAll && !selectAllItemExists) { 3993 menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, 3994 com.android.internal.R.string.selectAll) 3995 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3996 } else if (!canSelectAll && selectAllItemExists) { 3997 menu.removeItem(TextView.ID_SELECT_ALL); 3998 } 3999 } 4000 4001 private void updateReplaceItem(Menu menu) { 4002 boolean canReplace = mTextView.isSuggestionsEnabled() && shouldOfferToShowSuggestions(); 4003 boolean replaceItemExists = menu.findItem(TextView.ID_REPLACE) != null; 4004 if (canReplace && !replaceItemExists) { 4005 menu.add(Menu.NONE, TextView.ID_REPLACE, MENU_ITEM_ORDER_REPLACE, 4006 com.android.internal.R.string.replace) 4007 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 4008 } else if (!canReplace && replaceItemExists) { 4009 menu.removeItem(TextView.ID_REPLACE); 4010 } 4011 } 4012 4013 private void updateAssistMenuItems(Menu menu) { 4014 clearAssistMenuItems(menu); 4015 if (!mTextView.isDeviceProvisioned()) { 4016 return; 4017 } 4018 final TextClassification textClassification = 4019 getSelectionActionModeHelper().getTextClassification(); 4020 if (textClassification == null) { 4021 return; 4022 } 4023 if (isValidAssistMenuItem( 4024 textClassification.getIcon(), 4025 textClassification.getLabel(), 4026 textClassification.getIntent())) { 4027 final MenuItem item = menu.add( 4028 TextView.ID_ASSIST, TextView.ID_ASSIST, MENU_ITEM_ORDER_ASSIST, 4029 textClassification.getLabel()) 4030 .setIcon(textClassification.getIcon()) 4031 .setIntent(textClassification.getIntent()); 4032 item.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 4033 mAssistClickHandlers.put( 4034 item, TextClassification.createStartActivityOnClickListener( 4035 mTextView.getContext(), textClassification.getIntent())); 4036 } 4037 final int count = textClassification.getSecondaryActionsCount(); 4038 for (int i = 0; i < count; i++) { 4039 if (!isValidAssistMenuItem( 4040 textClassification.getSecondaryIcon(i), 4041 textClassification.getSecondaryLabel(i), 4042 textClassification.getSecondaryIntent(i))) { 4043 continue; 4044 } 4045 final int order = MENU_ITEM_ORDER_SECONDARY_ASSIST_ACTIONS_START + i; 4046 final MenuItem item = menu.add( 4047 TextView.ID_ASSIST, Menu.NONE, order, 4048 textClassification.getSecondaryLabel(i)) 4049 .setIcon(textClassification.getSecondaryIcon(i)) 4050 .setIntent(textClassification.getSecondaryIntent(i)); 4051 item.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 4052 mAssistClickHandlers.put(item, 4053 TextClassification.createStartActivityOnClickListener( 4054 mTextView.getContext(), textClassification.getSecondaryIntent(i))); 4055 } 4056 } 4057 4058 private void clearAssistMenuItems(Menu menu) { 4059 int i = 0; 4060 while (i < menu.size()) { 4061 final MenuItem menuItem = menu.getItem(i); 4062 if (menuItem.getGroupId() == TextView.ID_ASSIST) { 4063 menu.removeItem(menuItem.getItemId()); 4064 continue; 4065 } 4066 i++; 4067 } 4068 } 4069 4070 private boolean isValidAssistMenuItem(Drawable icon, CharSequence label, Intent intent) { 4071 final boolean hasUi = icon != null || !TextUtils.isEmpty(label); 4072 final boolean hasAction = isSupportedIntent(intent); 4073 return hasUi && hasAction; 4074 } 4075 4076 private boolean isSupportedIntent(Intent intent) { 4077 if (intent == null) { 4078 return false; 4079 } 4080 final Context context = mTextView.getContext(); 4081 final ResolveInfo info = context.getPackageManager().resolveActivity(intent, 0); 4082 final boolean samePackage = context.getPackageName().equals( 4083 info.activityInfo.packageName); 4084 if (samePackage) { 4085 return true; 4086 } 4087 4088 final boolean exported = info.activityInfo.exported; 4089 final boolean requiresPermission = info.activityInfo.permission != null; 4090 final boolean hasPermission = !requiresPermission 4091 || context.checkSelfPermission(info.activityInfo.permission) 4092 == PackageManager.PERMISSION_GRANTED; 4093 return exported && hasPermission; 4094 } 4095 4096 private boolean onAssistMenuItemClicked(MenuItem assistMenuItem) { 4097 Preconditions.checkArgument(assistMenuItem.getGroupId() == TextView.ID_ASSIST); 4098 4099 final TextClassification textClassification = 4100 getSelectionActionModeHelper().getTextClassification(); 4101 if (!mTextView.isDeviceProvisioned() || textClassification == null) { 4102 // No textClassification result to handle the click. Eat the click. 4103 return true; 4104 } 4105 4106 OnClickListener onClickListener = mAssistClickHandlers.get(assistMenuItem); 4107 if (onClickListener == null) { 4108 final Intent intent = assistMenuItem.getIntent(); 4109 if (intent != null) { 4110 onClickListener = TextClassification.createStartActivityOnClickListener( 4111 mTextView.getContext(), intent); 4112 } 4113 } 4114 if (onClickListener != null) { 4115 onClickListener.onClick(mTextView); 4116 stopTextActionMode(); 4117 } 4118 // We tried our best. 4119 return true; 4120 } 4121 4122 @Override 4123 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 4124 getSelectionActionModeHelper().onSelectionAction(item.getItemId()); 4125 4126 if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { 4127 return true; 4128 } 4129 Callback customCallback = getCustomCallback(); 4130 if (customCallback != null && customCallback.onActionItemClicked(mode, item)) { 4131 return true; 4132 } 4133 if (item.getGroupId() == TextView.ID_ASSIST && onAssistMenuItemClicked(item)) { 4134 return true; 4135 } 4136 return mTextView.onTextContextMenuItem(item.getItemId()); 4137 } 4138 4139 @Override 4140 public void onDestroyActionMode(ActionMode mode) { 4141 // Clear mTextActionMode not to recursively destroy action mode by clearing selection. 4142 getSelectionActionModeHelper().onDestroyActionMode(); 4143 mTextActionMode = null; 4144 Callback customCallback = getCustomCallback(); 4145 if (customCallback != null) { 4146 customCallback.onDestroyActionMode(mode); 4147 } 4148 4149 if (!mPreserveSelection) { 4150 /* 4151 * Leave current selection when we tentatively destroy action mode for the 4152 * selection. If we're detaching from a window, we'll bring back the selection 4153 * mode when (if) we get reattached. 4154 */ 4155 Selection.setSelection((Spannable) mTextView.getText(), 4156 mTextView.getSelectionEnd()); 4157 } 4158 4159 if (mSelectionModifierCursorController != null) { 4160 mSelectionModifierCursorController.hide(); 4161 } 4162 4163 mAssistClickHandlers.clear(); 4164 } 4165 4166 @Override 4167 public void onGetContentRect(ActionMode mode, View view, Rect outRect) { 4168 if (!view.equals(mTextView) || mTextView.getLayout() == null) { 4169 super.onGetContentRect(mode, view, outRect); 4170 return; 4171 } 4172 if (mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 4173 // We have a selection. 4174 mSelectionPath.reset(); 4175 mTextView.getLayout().getSelectionPath( 4176 mTextView.getSelectionStart(), mTextView.getSelectionEnd(), mSelectionPath); 4177 mSelectionPath.computeBounds(mSelectionBounds, true); 4178 mSelectionBounds.bottom += mHandleHeight; 4179 } else { 4180 // We have a cursor. 4181 Layout layout = mTextView.getLayout(); 4182 int line = layout.getLineForOffset(mTextView.getSelectionStart()); 4183 float primaryHorizontal = clampHorizontalPosition(null, 4184 layout.getPrimaryHorizontal(mTextView.getSelectionStart())); 4185 mSelectionBounds.set( 4186 primaryHorizontal, 4187 layout.getLineTop(line), 4188 primaryHorizontal, 4189 layout.getLineBottom(line) + mHandleHeight); 4190 } 4191 // Take TextView's padding and scroll into account. 4192 int textHorizontalOffset = mTextView.viewportToContentHorizontalOffset(); 4193 int textVerticalOffset = mTextView.viewportToContentVerticalOffset(); 4194 outRect.set( 4195 (int) Math.floor(mSelectionBounds.left + textHorizontalOffset), 4196 (int) Math.floor(mSelectionBounds.top + textVerticalOffset), 4197 (int) Math.ceil(mSelectionBounds.right + textHorizontalOffset), 4198 (int) Math.ceil(mSelectionBounds.bottom + textVerticalOffset)); 4199 } 4200 } 4201 4202 /** 4203 * A listener to call {@link InputMethodManager#updateCursorAnchorInfo(View, CursorAnchorInfo)} 4204 * while the input method is requesting the cursor/anchor position. Does nothing as long as 4205 * {@link InputMethodManager#isWatchingCursor(View)} returns false. 4206 */ 4207 private final class CursorAnchorInfoNotifier implements TextViewPositionListener { 4208 final CursorAnchorInfo.Builder mSelectionInfoBuilder = new CursorAnchorInfo.Builder(); 4209 final int[] mTmpIntOffset = new int[2]; 4210 final Matrix mViewToScreenMatrix = new Matrix(); 4211 4212 @Override 4213 public void updatePosition(int parentPositionX, int parentPositionY, 4214 boolean parentPositionChanged, boolean parentScrolled) { 4215 final InputMethodState ims = mInputMethodState; 4216 if (ims == null || ims.mBatchEditNesting > 0) { 4217 return; 4218 } 4219 final InputMethodManager imm = InputMethodManager.peekInstance(); 4220 if (null == imm) { 4221 return; 4222 } 4223 if (!imm.isActive(mTextView)) { 4224 return; 4225 } 4226 // Skip if the IME has not requested the cursor/anchor position. 4227 if (!imm.isCursorAnchorInfoEnabled()) { 4228 return; 4229 } 4230 Layout layout = mTextView.getLayout(); 4231 if (layout == null) { 4232 return; 4233 } 4234 4235 final CursorAnchorInfo.Builder builder = mSelectionInfoBuilder; 4236 builder.reset(); 4237 4238 final int selectionStart = mTextView.getSelectionStart(); 4239 builder.setSelectionRange(selectionStart, mTextView.getSelectionEnd()); 4240 4241 // Construct transformation matrix from view local coordinates to screen coordinates. 4242 mViewToScreenMatrix.set(mTextView.getMatrix()); 4243 mTextView.getLocationOnScreen(mTmpIntOffset); 4244 mViewToScreenMatrix.postTranslate(mTmpIntOffset[0], mTmpIntOffset[1]); 4245 builder.setMatrix(mViewToScreenMatrix); 4246 4247 final float viewportToContentHorizontalOffset = 4248 mTextView.viewportToContentHorizontalOffset(); 4249 final float viewportToContentVerticalOffset = 4250 mTextView.viewportToContentVerticalOffset(); 4251 4252 final CharSequence text = mTextView.getText(); 4253 if (text instanceof Spannable) { 4254 final Spannable sp = (Spannable) text; 4255 int composingTextStart = EditableInputConnection.getComposingSpanStart(sp); 4256 int composingTextEnd = EditableInputConnection.getComposingSpanEnd(sp); 4257 if (composingTextEnd < composingTextStart) { 4258 final int temp = composingTextEnd; 4259 composingTextEnd = composingTextStart; 4260 composingTextStart = temp; 4261 } 4262 final boolean hasComposingText = 4263 (0 <= composingTextStart) && (composingTextStart < composingTextEnd); 4264 if (hasComposingText) { 4265 final CharSequence composingText = text.subSequence(composingTextStart, 4266 composingTextEnd); 4267 builder.setComposingText(composingTextStart, composingText); 4268 mTextView.populateCharacterBounds(builder, composingTextStart, 4269 composingTextEnd, viewportToContentHorizontalOffset, 4270 viewportToContentVerticalOffset); 4271 } 4272 } 4273 4274 // Treat selectionStart as the insertion point. 4275 if (0 <= selectionStart) { 4276 final int offset = selectionStart; 4277 final int line = layout.getLineForOffset(offset); 4278 final float insertionMarkerX = layout.getPrimaryHorizontal(offset) 4279 + viewportToContentHorizontalOffset; 4280 final float insertionMarkerTop = layout.getLineTop(line) 4281 + viewportToContentVerticalOffset; 4282 final float insertionMarkerBaseline = layout.getLineBaseline(line) 4283 + viewportToContentVerticalOffset; 4284 final float insertionMarkerBottom = layout.getLineBottomWithoutSpacing(line) 4285 + viewportToContentVerticalOffset; 4286 final boolean isTopVisible = mTextView 4287 .isPositionVisible(insertionMarkerX, insertionMarkerTop); 4288 final boolean isBottomVisible = mTextView 4289 .isPositionVisible(insertionMarkerX, insertionMarkerBottom); 4290 int insertionMarkerFlags = 0; 4291 if (isTopVisible || isBottomVisible) { 4292 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; 4293 } 4294 if (!isTopVisible || !isBottomVisible) { 4295 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; 4296 } 4297 if (layout.isRtlCharAt(offset)) { 4298 insertionMarkerFlags |= CursorAnchorInfo.FLAG_IS_RTL; 4299 } 4300 builder.setInsertionMarkerLocation(insertionMarkerX, insertionMarkerTop, 4301 insertionMarkerBaseline, insertionMarkerBottom, insertionMarkerFlags); 4302 } 4303 4304 imm.updateCursorAnchorInfo(mTextView, builder.build()); 4305 } 4306 } 4307 4308 @VisibleForTesting 4309 public abstract class HandleView extends View implements TextViewPositionListener { 4310 protected Drawable mDrawable; 4311 protected Drawable mDrawableLtr; 4312 protected Drawable mDrawableRtl; 4313 private final PopupWindow mContainer; 4314 // Position with respect to the parent TextView 4315 private int mPositionX, mPositionY; 4316 private boolean mIsDragging; 4317 // Offset from touch position to mPosition 4318 private float mTouchToWindowOffsetX, mTouchToWindowOffsetY; 4319 protected int mHotspotX; 4320 protected int mHorizontalGravity; 4321 // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up 4322 private float mTouchOffsetY; 4323 // Where the touch position should be on the handle to ensure a maximum cursor visibility 4324 private float mIdealVerticalOffset; 4325 // Parent's (TextView) previous position in window 4326 private int mLastParentX, mLastParentY; 4327 // Parent's (TextView) previous position on screen 4328 private int mLastParentXOnScreen, mLastParentYOnScreen; 4329 // Previous text character offset 4330 protected int mPreviousOffset = -1; 4331 // Previous text character offset 4332 private boolean mPositionHasChanged = true; 4333 // Minimum touch target size for handles 4334 private int mMinSize; 4335 // Indicates the line of text that the handle is on. 4336 protected int mPrevLine = UNSET_LINE; 4337 // Indicates the line of text that the user was touching. This can differ from mPrevLine 4338 // when selecting text when the handles jump to the end / start of words which may be on 4339 // a different line. 4340 protected int mPreviousLineTouched = UNSET_LINE; 4341 4342 private HandleView(Drawable drawableLtr, Drawable drawableRtl, final int id) { 4343 super(mTextView.getContext()); 4344 setId(id); 4345 mContainer = new PopupWindow(mTextView.getContext(), null, 4346 com.android.internal.R.attr.textSelectHandleWindowStyle); 4347 mContainer.setSplitTouchEnabled(true); 4348 mContainer.setClippingEnabled(false); 4349 mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 4350 mContainer.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 4351 mContainer.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 4352 mContainer.setContentView(this); 4353 4354 mDrawableLtr = drawableLtr; 4355 mDrawableRtl = drawableRtl; 4356 mMinSize = mTextView.getContext().getResources().getDimensionPixelSize( 4357 com.android.internal.R.dimen.text_handle_min_size); 4358 4359 updateDrawable(); 4360 4361 final int handleHeight = getPreferredHeight(); 4362 mTouchOffsetY = -0.3f * handleHeight; 4363 mIdealVerticalOffset = 0.7f * handleHeight; 4364 } 4365 4366 public float getIdealVerticalOffset() { 4367 return mIdealVerticalOffset; 4368 } 4369 4370 protected void updateDrawable() { 4371 if (mIsDragging) { 4372 // Don't update drawable during dragging. 4373 return; 4374 } 4375 final Layout layout = mTextView.getLayout(); 4376 if (layout == null) { 4377 return; 4378 } 4379 final int offset = getCurrentCursorOffset(); 4380 final boolean isRtlCharAtOffset = isAtRtlRun(layout, offset); 4381 final Drawable oldDrawable = mDrawable; 4382 mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr; 4383 mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset); 4384 mHorizontalGravity = getHorizontalGravity(isRtlCharAtOffset); 4385 if (oldDrawable != mDrawable && isShowing()) { 4386 // Update popup window position. 4387 mPositionX = getCursorHorizontalPosition(layout, offset) - mHotspotX 4388 - getHorizontalOffset() + getCursorOffset(); 4389 mPositionX += mTextView.viewportToContentHorizontalOffset(); 4390 mPositionHasChanged = true; 4391 updatePosition(mLastParentX, mLastParentY, false, false); 4392 postInvalidate(); 4393 } 4394 } 4395 4396 protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun); 4397 protected abstract int getHorizontalGravity(boolean isRtlRun); 4398 4399 // Touch-up filter: number of previous positions remembered 4400 private static final int HISTORY_SIZE = 5; 4401 private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150; 4402 private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350; 4403 private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; 4404 private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; 4405 private int mPreviousOffsetIndex = 0; 4406 private int mNumberPreviousOffsets = 0; 4407 4408 private void startTouchUpFilter(int offset) { 4409 mNumberPreviousOffsets = 0; 4410 addPositionToTouchUpFilter(offset); 4411 } 4412 4413 private void addPositionToTouchUpFilter(int offset) { 4414 mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; 4415 mPreviousOffsets[mPreviousOffsetIndex] = offset; 4416 mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); 4417 mNumberPreviousOffsets++; 4418 } 4419 4420 private void filterOnTouchUp(boolean fromTouchScreen) { 4421 final long now = SystemClock.uptimeMillis(); 4422 int i = 0; 4423 int index = mPreviousOffsetIndex; 4424 final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); 4425 while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) { 4426 i++; 4427 index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; 4428 } 4429 4430 if (i > 0 && i < iMax 4431 && (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) { 4432 positionAtCursorOffset(mPreviousOffsets[index], false, fromTouchScreen); 4433 } 4434 } 4435 4436 public boolean offsetHasBeenChanged() { 4437 return mNumberPreviousOffsets > 1; 4438 } 4439 4440 @Override 4441 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4442 setMeasuredDimension(getPreferredWidth(), getPreferredHeight()); 4443 } 4444 4445 @Override 4446 public void invalidate() { 4447 super.invalidate(); 4448 if (isShowing()) { 4449 positionAtCursorOffset(getCurrentCursorOffset(), true, false); 4450 } 4451 }; 4452 4453 private int getPreferredWidth() { 4454 return Math.max(mDrawable.getIntrinsicWidth(), mMinSize); 4455 } 4456 4457 private int getPreferredHeight() { 4458 return Math.max(mDrawable.getIntrinsicHeight(), mMinSize); 4459 } 4460 4461 public void show() { 4462 if (isShowing()) return; 4463 4464 getPositionListener().addSubscriber(this, true /* local position may change */); 4465 4466 // Make sure the offset is always considered new, even when focusing at same position 4467 mPreviousOffset = -1; 4468 positionAtCursorOffset(getCurrentCursorOffset(), false, false); 4469 } 4470 4471 protected void dismiss() { 4472 mIsDragging = false; 4473 mContainer.dismiss(); 4474 onDetached(); 4475 } 4476 4477 public void hide() { 4478 dismiss(); 4479 4480 getPositionListener().removeSubscriber(this); 4481 } 4482 4483 public boolean isShowing() { 4484 return mContainer.isShowing(); 4485 } 4486 4487 private boolean isVisible() { 4488 // Always show a dragging handle. 4489 if (mIsDragging) { 4490 return true; 4491 } 4492 4493 if (mTextView.isInBatchEditMode()) { 4494 return false; 4495 } 4496 4497 return mTextView.isPositionVisible( 4498 mPositionX + mHotspotX + getHorizontalOffset(), mPositionY); 4499 } 4500 4501 public abstract int getCurrentCursorOffset(); 4502 4503 protected abstract void updateSelection(int offset); 4504 4505 protected abstract void updatePosition(float x, float y, boolean fromTouchScreen); 4506 4507 @MagnifierHandleTrigger 4508 protected abstract int getMagnifierHandleTrigger(); 4509 4510 protected boolean isAtRtlRun(@NonNull Layout layout, int offset) { 4511 return layout.isRtlCharAt(offset); 4512 } 4513 4514 @VisibleForTesting 4515 public float getHorizontal(@NonNull Layout layout, int offset) { 4516 return layout.getPrimaryHorizontal(offset); 4517 } 4518 4519 protected int getOffsetAtCoordinate(@NonNull Layout layout, int line, float x) { 4520 return mTextView.getOffsetAtCoordinate(line, x); 4521 } 4522 4523 /** 4524 * @param offset Cursor offset. Must be in [-1, length]. 4525 * @param forceUpdatePosition whether to force update the position. This should be true 4526 * when If the parent has been scrolled, for example. 4527 * @param fromTouchScreen {@code true} if the cursor is moved with motion events from the 4528 * touch screen. 4529 */ 4530 protected void positionAtCursorOffset(int offset, boolean forceUpdatePosition, 4531 boolean fromTouchScreen) { 4532 // A HandleView relies on the layout, which may be nulled by external methods 4533 Layout layout = mTextView.getLayout(); 4534 if (layout == null) { 4535 // Will update controllers' state, hiding them and stopping selection mode if needed 4536 prepareCursorControllers(); 4537 return; 4538 } 4539 layout = mTextView.getLayout(); 4540 4541 boolean offsetChanged = offset != mPreviousOffset; 4542 if (offsetChanged || forceUpdatePosition) { 4543 if (offsetChanged) { 4544 updateSelection(offset); 4545 if (fromTouchScreen && mHapticTextHandleEnabled) { 4546 mTextView.performHapticFeedback(HapticFeedbackConstants.TEXT_HANDLE_MOVE); 4547 } 4548 addPositionToTouchUpFilter(offset); 4549 } 4550 final int line = layout.getLineForOffset(offset); 4551 mPrevLine = line; 4552 4553 mPositionX = getCursorHorizontalPosition(layout, offset) - mHotspotX 4554 - getHorizontalOffset() + getCursorOffset(); 4555 mPositionY = layout.getLineBottomWithoutSpacing(line); 4556 4557 // Take TextView's padding and scroll into account. 4558 mPositionX += mTextView.viewportToContentHorizontalOffset(); 4559 mPositionY += mTextView.viewportToContentVerticalOffset(); 4560 4561 mPreviousOffset = offset; 4562 mPositionHasChanged = true; 4563 } 4564 } 4565 4566 /** 4567 * Return the clamped horizontal position for the cursor. 4568 * 4569 * @param layout Text layout. 4570 * @param offset Character offset for the cursor. 4571 * @return The clamped horizontal position for the cursor. 4572 */ 4573 int getCursorHorizontalPosition(Layout layout, int offset) { 4574 return (int) (getHorizontal(layout, offset) - 0.5f); 4575 } 4576 4577 @Override 4578 public void updatePosition(int parentPositionX, int parentPositionY, 4579 boolean parentPositionChanged, boolean parentScrolled) { 4580 positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled, false); 4581 if (parentPositionChanged || mPositionHasChanged) { 4582 if (mIsDragging) { 4583 // Update touchToWindow offset in case of parent scrolling while dragging 4584 if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) { 4585 mTouchToWindowOffsetX += parentPositionX - mLastParentX; 4586 mTouchToWindowOffsetY += parentPositionY - mLastParentY; 4587 mLastParentX = parentPositionX; 4588 mLastParentY = parentPositionY; 4589 } 4590 4591 onHandleMoved(); 4592 } 4593 4594 if (isVisible()) { 4595 // Transform to the window coordinates to follow the view tranformation. 4596 final int[] pts = { mPositionX + mHotspotX + getHorizontalOffset(), mPositionY}; 4597 mTextView.transformFromViewToWindowSpace(pts); 4598 pts[0] -= mHotspotX + getHorizontalOffset(); 4599 4600 if (isShowing()) { 4601 mContainer.update(pts[0], pts[1], -1, -1); 4602 } else { 4603 mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, pts[0], pts[1]); 4604 } 4605 } else { 4606 if (isShowing()) { 4607 dismiss(); 4608 } 4609 } 4610 4611 mPositionHasChanged = false; 4612 } 4613 } 4614 4615 @Override 4616 protected void onDraw(Canvas c) { 4617 final int drawWidth = mDrawable.getIntrinsicWidth(); 4618 final int left = getHorizontalOffset(); 4619 4620 mDrawable.setBounds(left, 0, left + drawWidth, mDrawable.getIntrinsicHeight()); 4621 mDrawable.draw(c); 4622 } 4623 4624 private int getHorizontalOffset() { 4625 final int width = getPreferredWidth(); 4626 final int drawWidth = mDrawable.getIntrinsicWidth(); 4627 final int left; 4628 switch (mHorizontalGravity) { 4629 case Gravity.LEFT: 4630 left = 0; 4631 break; 4632 default: 4633 case Gravity.CENTER: 4634 left = (width - drawWidth) / 2; 4635 break; 4636 case Gravity.RIGHT: 4637 left = width - drawWidth; 4638 break; 4639 } 4640 return left; 4641 } 4642 4643 protected int getCursorOffset() { 4644 return 0; 4645 } 4646 4647 protected final void showMagnifier(@NonNull final MotionEvent event) { 4648 if (mMagnifier == null) { 4649 return; 4650 } 4651 4652 final int trigger = getMagnifierHandleTrigger(); 4653 final int offset; 4654 switch (trigger) { 4655 case MagnifierHandleTrigger.INSERTION: // Fall through. 4656 case MagnifierHandleTrigger.SELECTION_START: 4657 offset = mTextView.getSelectionStart(); 4658 break; 4659 case MagnifierHandleTrigger.SELECTION_END: 4660 offset = mTextView.getSelectionEnd(); 4661 break; 4662 default: 4663 offset = -1; 4664 break; 4665 } 4666 4667 if (offset == -1) { 4668 dismissMagnifier(); 4669 } 4670 4671 final Layout layout = mTextView.getLayout(); 4672 final int lineNumber = layout.getLineForOffset(offset); 4673 // Horizontally move the magnifier smoothly. 4674 final int[] textViewLocationOnScreen = new int[2]; 4675 mTextView.getLocationOnScreen(textViewLocationOnScreen); 4676 final float xPosInView = event.getRawX() - textViewLocationOnScreen[0]; 4677 // Vertically snap to middle of current line. 4678 final float yPosInView = (mTextView.getLayout().getLineTop(lineNumber) 4679 + mTextView.getLayout().getLineBottom(lineNumber)) / 2.0f 4680 + mTextView.getTotalPaddingTop() - mTextView.getScrollY(); 4681 4682 suspendBlink(); 4683 mMagnifier.show(xPosInView, yPosInView); 4684 } 4685 4686 protected final void dismissMagnifier() { 4687 if (mMagnifier != null) { 4688 mMagnifier.dismiss(); 4689 resumeBlink(); 4690 } 4691 } 4692 4693 @Override 4694 public boolean onTouchEvent(MotionEvent ev) { 4695 updateFloatingToolbarVisibility(ev); 4696 4697 switch (ev.getActionMasked()) { 4698 case MotionEvent.ACTION_DOWN: { 4699 startTouchUpFilter(getCurrentCursorOffset()); 4700 4701 final PositionListener positionListener = getPositionListener(); 4702 mLastParentX = positionListener.getPositionX(); 4703 mLastParentY = positionListener.getPositionY(); 4704 mLastParentXOnScreen = positionListener.getPositionXOnScreen(); 4705 mLastParentYOnScreen = positionListener.getPositionYOnScreen(); 4706 4707 final float xInWindow = ev.getRawX() - mLastParentXOnScreen + mLastParentX; 4708 final float yInWindow = ev.getRawY() - mLastParentYOnScreen + mLastParentY; 4709 mTouchToWindowOffsetX = xInWindow - mPositionX; 4710 mTouchToWindowOffsetY = yInWindow - mPositionY; 4711 4712 mIsDragging = true; 4713 mPreviousLineTouched = UNSET_LINE; 4714 break; 4715 } 4716 4717 case MotionEvent.ACTION_MOVE: { 4718 final float xInWindow = ev.getRawX() - mLastParentXOnScreen + mLastParentX; 4719 final float yInWindow = ev.getRawY() - mLastParentYOnScreen + mLastParentY; 4720 4721 // Vertical hysteresis: vertical down movement tends to snap to ideal offset 4722 final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY; 4723 final float currentVerticalOffset = yInWindow - mPositionY - mLastParentY; 4724 float newVerticalOffset; 4725 if (previousVerticalOffset < mIdealVerticalOffset) { 4726 newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset); 4727 newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset); 4728 } else { 4729 newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset); 4730 newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset); 4731 } 4732 mTouchToWindowOffsetY = newVerticalOffset + mLastParentY; 4733 4734 final float newPosX = 4735 xInWindow - mTouchToWindowOffsetX + mHotspotX + getHorizontalOffset(); 4736 final float newPosY = yInWindow - mTouchToWindowOffsetY + mTouchOffsetY; 4737 4738 updatePosition(newPosX, newPosY, 4739 ev.isFromSource(InputDevice.SOURCE_TOUCHSCREEN)); 4740 break; 4741 } 4742 4743 case MotionEvent.ACTION_UP: 4744 filterOnTouchUp(ev.isFromSource(InputDevice.SOURCE_TOUCHSCREEN)); 4745 // Fall through. 4746 case MotionEvent.ACTION_CANCEL: 4747 mIsDragging = false; 4748 updateDrawable(); 4749 break; 4750 } 4751 return true; 4752 } 4753 4754 public boolean isDragging() { 4755 return mIsDragging; 4756 } 4757 4758 void onHandleMoved() {} 4759 4760 public void onDetached() {} 4761 } 4762 4763 private class InsertionHandleView extends HandleView { 4764 private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000; 4765 private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds 4766 4767 // Used to detect taps on the insertion handle, which will affect the insertion action mode 4768 private float mDownPositionX, mDownPositionY; 4769 private Runnable mHider; 4770 4771 public InsertionHandleView(Drawable drawable) { 4772 super(drawable, drawable, com.android.internal.R.id.insertion_handle); 4773 } 4774 4775 @Override 4776 public void show() { 4777 super.show(); 4778 4779 final long durationSinceCutOrCopy = 4780 SystemClock.uptimeMillis() - TextView.sLastCutCopyOrTextChangedTime; 4781 4782 // Cancel the single tap delayed runnable. 4783 if (mInsertionActionModeRunnable != null 4784 && ((mTapState == TAP_STATE_DOUBLE_TAP) 4785 || (mTapState == TAP_STATE_TRIPLE_CLICK) 4786 || isCursorInsideEasyCorrectionSpan())) { 4787 mTextView.removeCallbacks(mInsertionActionModeRunnable); 4788 } 4789 4790 // Prepare and schedule the single tap runnable to run exactly after the double tap 4791 // timeout has passed. 4792 if ((mTapState != TAP_STATE_DOUBLE_TAP) && (mTapState != TAP_STATE_TRIPLE_CLICK) 4793 && !isCursorInsideEasyCorrectionSpan() 4794 && (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION)) { 4795 if (mTextActionMode == null) { 4796 if (mInsertionActionModeRunnable == null) { 4797 mInsertionActionModeRunnable = new Runnable() { 4798 @Override 4799 public void run() { 4800 startInsertionActionMode(); 4801 } 4802 }; 4803 } 4804 mTextView.postDelayed( 4805 mInsertionActionModeRunnable, 4806 ViewConfiguration.getDoubleTapTimeout() + 1); 4807 } 4808 4809 } 4810 4811 hideAfterDelay(); 4812 } 4813 4814 private void hideAfterDelay() { 4815 if (mHider == null) { 4816 mHider = new Runnable() { 4817 public void run() { 4818 hide(); 4819 } 4820 }; 4821 } else { 4822 removeHiderCallback(); 4823 } 4824 mTextView.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT); 4825 } 4826 4827 private void removeHiderCallback() { 4828 if (mHider != null) { 4829 mTextView.removeCallbacks(mHider); 4830 } 4831 } 4832 4833 @Override 4834 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 4835 return drawable.getIntrinsicWidth() / 2; 4836 } 4837 4838 @Override 4839 protected int getHorizontalGravity(boolean isRtlRun) { 4840 return Gravity.CENTER_HORIZONTAL; 4841 } 4842 4843 @Override 4844 protected int getCursorOffset() { 4845 int offset = super.getCursorOffset(); 4846 if (mDrawableForCursor != null) { 4847 mDrawableForCursor.getPadding(mTempRect); 4848 offset += (mDrawableForCursor.getIntrinsicWidth() 4849 - mTempRect.left - mTempRect.right) / 2; 4850 } 4851 return offset; 4852 } 4853 4854 @Override 4855 int getCursorHorizontalPosition(Layout layout, int offset) { 4856 if (mDrawableForCursor != null) { 4857 final float horizontal = getHorizontal(layout, offset); 4858 return clampHorizontalPosition(mDrawableForCursor, horizontal) + mTempRect.left; 4859 } 4860 return super.getCursorHorizontalPosition(layout, offset); 4861 } 4862 4863 @Override 4864 public boolean onTouchEvent(MotionEvent ev) { 4865 final boolean result = super.onTouchEvent(ev); 4866 4867 switch (ev.getActionMasked()) { 4868 case MotionEvent.ACTION_DOWN: 4869 mDownPositionX = ev.getRawX(); 4870 mDownPositionY = ev.getRawY(); 4871 showMagnifier(ev); 4872 break; 4873 4874 case MotionEvent.ACTION_MOVE: 4875 showMagnifier(ev); 4876 break; 4877 4878 case MotionEvent.ACTION_UP: 4879 if (!offsetHasBeenChanged()) { 4880 final float deltaX = mDownPositionX - ev.getRawX(); 4881 final float deltaY = mDownPositionY - ev.getRawY(); 4882 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 4883 4884 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 4885 mTextView.getContext()); 4886 final int touchSlop = viewConfiguration.getScaledTouchSlop(); 4887 4888 if (distanceSquared < touchSlop * touchSlop) { 4889 // Tapping on the handle toggles the insertion action mode. 4890 if (mTextActionMode != null) { 4891 stopTextActionMode(); 4892 } else { 4893 startInsertionActionMode(); 4894 } 4895 } 4896 } else { 4897 if (mTextActionMode != null) { 4898 mTextActionMode.invalidateContentRect(); 4899 } 4900 } 4901 // Fall through. 4902 case MotionEvent.ACTION_CANCEL: 4903 hideAfterDelay(); 4904 dismissMagnifier(); 4905 break; 4906 4907 default: 4908 break; 4909 } 4910 4911 return result; 4912 } 4913 4914 @Override 4915 public int getCurrentCursorOffset() { 4916 return mTextView.getSelectionStart(); 4917 } 4918 4919 @Override 4920 public void updateSelection(int offset) { 4921 Selection.setSelection((Spannable) mTextView.getText(), offset); 4922 } 4923 4924 @Override 4925 protected void updatePosition(float x, float y, boolean fromTouchScreen) { 4926 Layout layout = mTextView.getLayout(); 4927 int offset; 4928 if (layout != null) { 4929 if (mPreviousLineTouched == UNSET_LINE) { 4930 mPreviousLineTouched = mTextView.getLineAtCoordinate(y); 4931 } 4932 int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); 4933 offset = getOffsetAtCoordinate(layout, currLine, x); 4934 mPreviousLineTouched = currLine; 4935 } else { 4936 offset = -1; 4937 } 4938 positionAtCursorOffset(offset, false, fromTouchScreen); 4939 if (mTextActionMode != null) { 4940 invalidateActionMode(); 4941 } 4942 } 4943 4944 @Override 4945 void onHandleMoved() { 4946 super.onHandleMoved(); 4947 removeHiderCallback(); 4948 } 4949 4950 @Override 4951 public void onDetached() { 4952 super.onDetached(); 4953 removeHiderCallback(); 4954 } 4955 4956 @Override 4957 @MagnifierHandleTrigger 4958 protected int getMagnifierHandleTrigger() { 4959 return MagnifierHandleTrigger.INSERTION; 4960 } 4961 } 4962 4963 @Retention(RetentionPolicy.SOURCE) 4964 @IntDef(prefix = { "HANDLE_TYPE_" }, value = { 4965 HANDLE_TYPE_SELECTION_START, 4966 HANDLE_TYPE_SELECTION_END 4967 }) 4968 public @interface HandleType {} 4969 public static final int HANDLE_TYPE_SELECTION_START = 0; 4970 public static final int HANDLE_TYPE_SELECTION_END = 1; 4971 4972 /** For selection handles */ 4973 @VisibleForTesting 4974 public final class SelectionHandleView extends HandleView { 4975 // Indicates the handle type, selection start (HANDLE_TYPE_SELECTION_START) or selection 4976 // end (HANDLE_TYPE_SELECTION_END). 4977 @HandleType 4978 private final int mHandleType; 4979 // Indicates whether the cursor is making adjustments within a word. 4980 private boolean mInWord = false; 4981 // Difference between touch position and word boundary position. 4982 private float mTouchWordDelta; 4983 // X value of the previous updatePosition call. 4984 private float mPrevX; 4985 // Indicates if the handle has moved a boundary between LTR and RTL text. 4986 private boolean mLanguageDirectionChanged = false; 4987 // Distance from edge of horizontally scrolling text view 4988 // to use to switch to character mode. 4989 private final float mTextViewEdgeSlop; 4990 // Used to save text view location. 4991 private final int[] mTextViewLocation = new int[2]; 4992 4993 public SelectionHandleView(Drawable drawableLtr, Drawable drawableRtl, int id, 4994 @HandleType int handleType) { 4995 super(drawableLtr, drawableRtl, id); 4996 mHandleType = handleType; 4997 ViewConfiguration viewConfiguration = ViewConfiguration.get(mTextView.getContext()); 4998 mTextViewEdgeSlop = viewConfiguration.getScaledTouchSlop() * 4; 4999 } 5000 5001 private boolean isStartHandle() { 5002 return mHandleType == HANDLE_TYPE_SELECTION_START; 5003 } 5004 5005 @Override 5006 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 5007 if (isRtlRun == isStartHandle()) { 5008 return drawable.getIntrinsicWidth() / 4; 5009 } else { 5010 return (drawable.getIntrinsicWidth() * 3) / 4; 5011 } 5012 } 5013 5014 @Override 5015 protected int getHorizontalGravity(boolean isRtlRun) { 5016 return (isRtlRun == isStartHandle()) ? Gravity.LEFT : Gravity.RIGHT; 5017 } 5018 5019 @Override 5020 public int getCurrentCursorOffset() { 5021 return isStartHandle() ? mTextView.getSelectionStart() : mTextView.getSelectionEnd(); 5022 } 5023 5024 @Override 5025 protected void updateSelection(int offset) { 5026 if (isStartHandle()) { 5027 Selection.setSelection((Spannable) mTextView.getText(), offset, 5028 mTextView.getSelectionEnd()); 5029 } else { 5030 Selection.setSelection((Spannable) mTextView.getText(), 5031 mTextView.getSelectionStart(), offset); 5032 } 5033 updateDrawable(); 5034 if (mTextActionMode != null) { 5035 invalidateActionMode(); 5036 } 5037 } 5038 5039 @Override 5040 protected void updatePosition(float x, float y, boolean fromTouchScreen) { 5041 final Layout layout = mTextView.getLayout(); 5042 if (layout == null) { 5043 // HandleView will deal appropriately in positionAtCursorOffset when 5044 // layout is null. 5045 positionAndAdjustForCrossingHandles(mTextView.getOffsetForPosition(x, y), 5046 fromTouchScreen); 5047 return; 5048 } 5049 5050 if (mPreviousLineTouched == UNSET_LINE) { 5051 mPreviousLineTouched = mTextView.getLineAtCoordinate(y); 5052 } 5053 5054 boolean positionCursor = false; 5055 final int anotherHandleOffset = 5056 isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); 5057 int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); 5058 int initialOffset = getOffsetAtCoordinate(layout, currLine, x); 5059 5060 if (isStartHandle() && initialOffset >= anotherHandleOffset 5061 || !isStartHandle() && initialOffset <= anotherHandleOffset) { 5062 // Handles have crossed, bound it to the first selected line and 5063 // adjust by word / char as normal. 5064 currLine = layout.getLineForOffset(anotherHandleOffset); 5065 initialOffset = getOffsetAtCoordinate(layout, currLine, x); 5066 } 5067 5068 int offset = initialOffset; 5069 final int wordEnd = getWordEnd(offset); 5070 final int wordStart = getWordStart(offset); 5071 5072 if (mPrevX == UNSET_X_VALUE) { 5073 mPrevX = x; 5074 } 5075 5076 final int currentOffset = getCurrentCursorOffset(); 5077 final boolean rtlAtCurrentOffset = isAtRtlRun(layout, currentOffset); 5078 final boolean atRtl = isAtRtlRun(layout, offset); 5079 final boolean isLvlBoundary = layout.isLevelBoundary(offset); 5080 5081 // We can't determine if the user is expanding or shrinking the selection if they're 5082 // on a bi-di boundary, so until they've moved past the boundary we'll just place 5083 // the cursor at the current position. 5084 if (isLvlBoundary || (rtlAtCurrentOffset && !atRtl) || (!rtlAtCurrentOffset && atRtl)) { 5085 // We're on a boundary or this is the first direction change -- just update 5086 // to the current position. 5087 mLanguageDirectionChanged = true; 5088 mTouchWordDelta = 0.0f; 5089 positionAndAdjustForCrossingHandles(offset, fromTouchScreen); 5090 return; 5091 } else if (mLanguageDirectionChanged && !isLvlBoundary) { 5092 // We've just moved past the boundary so update the position. After this we can 5093 // figure out if the user is expanding or shrinking to go by word or character. 5094 positionAndAdjustForCrossingHandles(offset, fromTouchScreen); 5095 mTouchWordDelta = 0.0f; 5096 mLanguageDirectionChanged = false; 5097 return; 5098 } 5099 5100 boolean isExpanding; 5101 final float xDiff = x - mPrevX; 5102 if (isStartHandle()) { 5103 isExpanding = currLine < mPreviousLineTouched; 5104 } else { 5105 isExpanding = currLine > mPreviousLineTouched; 5106 } 5107 if (atRtl == isStartHandle()) { 5108 isExpanding |= xDiff > 0; 5109 } else { 5110 isExpanding |= xDiff < 0; 5111 } 5112 5113 if (mTextView.getHorizontallyScrolling()) { 5114 if (positionNearEdgeOfScrollingView(x, atRtl) 5115 && ((isStartHandle() && mTextView.getScrollX() != 0) 5116 || (!isStartHandle() 5117 && mTextView.canScrollHorizontally(atRtl ? -1 : 1))) 5118 && ((isExpanding && ((isStartHandle() && offset < currentOffset) 5119 || (!isStartHandle() && offset > currentOffset))) 5120 || !isExpanding)) { 5121 // If we're expanding ensure that the offset is actually expanding compared to 5122 // the current offset, if the handle snapped to the word, the finger position 5123 // may be out of sync and we don't want the selection to jump back. 5124 mTouchWordDelta = 0.0f; 5125 final int nextOffset = (atRtl == isStartHandle()) 5126 ? layout.getOffsetToRightOf(mPreviousOffset) 5127 : layout.getOffsetToLeftOf(mPreviousOffset); 5128 positionAndAdjustForCrossingHandles(nextOffset, fromTouchScreen); 5129 return; 5130 } 5131 } 5132 5133 if (isExpanding) { 5134 // User is increasing the selection. 5135 int wordBoundary = isStartHandle() ? wordStart : wordEnd; 5136 final boolean snapToWord = (!mInWord 5137 || (isStartHandle() ? currLine < mPrevLine : currLine > mPrevLine)) 5138 && atRtl == isAtRtlRun(layout, wordBoundary); 5139 if (snapToWord) { 5140 // Sometimes words can be broken across lines (Chinese, hyphenation). 5141 // We still snap to the word boundary but we only use the letters on the 5142 // current line to determine if the user is far enough into the word to snap. 5143 if (layout.getLineForOffset(wordBoundary) != currLine) { 5144 wordBoundary = isStartHandle() 5145 ? layout.getLineStart(currLine) : layout.getLineEnd(currLine); 5146 } 5147 final int offsetThresholdToSnap = isStartHandle() 5148 ? wordEnd - ((wordEnd - wordBoundary) / 2) 5149 : wordStart + ((wordBoundary - wordStart) / 2); 5150 if (isStartHandle() 5151 && (offset <= offsetThresholdToSnap || currLine < mPrevLine)) { 5152 // User is far enough into the word or on a different line so we expand by 5153 // word. 5154 offset = wordStart; 5155 } else if (!isStartHandle() 5156 && (offset >= offsetThresholdToSnap || currLine > mPrevLine)) { 5157 // User is far enough into the word or on a different line so we expand by 5158 // word. 5159 offset = wordEnd; 5160 } else { 5161 offset = mPreviousOffset; 5162 } 5163 } 5164 if ((isStartHandle() && offset < initialOffset) 5165 || (!isStartHandle() && offset > initialOffset)) { 5166 final float adjustedX = getHorizontal(layout, offset); 5167 mTouchWordDelta = 5168 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 5169 } else { 5170 mTouchWordDelta = 0.0f; 5171 } 5172 positionCursor = true; 5173 } else { 5174 final int adjustedOffset = 5175 getOffsetAtCoordinate(layout, currLine, x - mTouchWordDelta); 5176 final boolean shrinking = isStartHandle() 5177 ? adjustedOffset > mPreviousOffset || currLine > mPrevLine 5178 : adjustedOffset < mPreviousOffset || currLine < mPrevLine; 5179 if (shrinking) { 5180 // User is shrinking the selection. 5181 if (currLine != mPrevLine) { 5182 // We're on a different line, so we'll snap to word boundaries. 5183 offset = isStartHandle() ? wordStart : wordEnd; 5184 if ((isStartHandle() && offset < initialOffset) 5185 || (!isStartHandle() && offset > initialOffset)) { 5186 final float adjustedX = getHorizontal(layout, offset); 5187 mTouchWordDelta = 5188 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 5189 } else { 5190 mTouchWordDelta = 0.0f; 5191 } 5192 } else { 5193 offset = adjustedOffset; 5194 } 5195 positionCursor = true; 5196 } else if ((isStartHandle() && adjustedOffset < mPreviousOffset) 5197 || (!isStartHandle() && adjustedOffset > mPreviousOffset)) { 5198 // Handle has jumped to the word boundary, and the user is moving 5199 // their finger towards the handle, the delta should be updated. 5200 mTouchWordDelta = mTextView.convertToLocalHorizontalCoordinate(x) 5201 - getHorizontal(layout, mPreviousOffset); 5202 } 5203 } 5204 5205 if (positionCursor) { 5206 mPreviousLineTouched = currLine; 5207 positionAndAdjustForCrossingHandles(offset, fromTouchScreen); 5208 } 5209 mPrevX = x; 5210 } 5211 5212 @Override 5213 protected void positionAtCursorOffset(int offset, boolean forceUpdatePosition, 5214 boolean fromTouchScreen) { 5215 super.positionAtCursorOffset(offset, forceUpdatePosition, fromTouchScreen); 5216 mInWord = (offset != -1) && !getWordIteratorWithText().isBoundary(offset); 5217 } 5218 5219 @Override 5220 public boolean onTouchEvent(MotionEvent event) { 5221 boolean superResult = super.onTouchEvent(event); 5222 5223 switch (event.getActionMasked()) { 5224 case MotionEvent.ACTION_DOWN: 5225 // Reset the touch word offset and x value when the user 5226 // re-engages the handle. 5227 mTouchWordDelta = 0.0f; 5228 mPrevX = UNSET_X_VALUE; 5229 showMagnifier(event); 5230 break; 5231 5232 case MotionEvent.ACTION_MOVE: 5233 showMagnifier(event); 5234 break; 5235 5236 case MotionEvent.ACTION_UP: 5237 case MotionEvent.ACTION_CANCEL: 5238 dismissMagnifier(); 5239 break; 5240 } 5241 5242 return superResult; 5243 } 5244 5245 private void positionAndAdjustForCrossingHandles(int offset, boolean fromTouchScreen) { 5246 final int anotherHandleOffset = 5247 isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); 5248 if ((isStartHandle() && offset >= anotherHandleOffset) 5249 || (!isStartHandle() && offset <= anotherHandleOffset)) { 5250 mTouchWordDelta = 0.0f; 5251 final Layout layout = mTextView.getLayout(); 5252 if (layout != null && offset != anotherHandleOffset) { 5253 final float horiz = getHorizontal(layout, offset); 5254 final float anotherHandleHoriz = getHorizontal(layout, anotherHandleOffset, 5255 !isStartHandle()); 5256 final float currentHoriz = getHorizontal(layout, mPreviousOffset); 5257 if (currentHoriz < anotherHandleHoriz && horiz < anotherHandleHoriz 5258 || currentHoriz > anotherHandleHoriz && horiz > anotherHandleHoriz) { 5259 // This handle passes another one as it crossed a direction boundary. 5260 // Don't minimize the selection, but keep the handle at the run boundary. 5261 final int currentOffset = getCurrentCursorOffset(); 5262 final int offsetToGetRunRange = isStartHandle() 5263 ? currentOffset : Math.max(currentOffset - 1, 0); 5264 final long range = layout.getRunRange(offsetToGetRunRange); 5265 if (isStartHandle()) { 5266 offset = TextUtils.unpackRangeStartFromLong(range); 5267 } else { 5268 offset = TextUtils.unpackRangeEndFromLong(range); 5269 } 5270 positionAtCursorOffset(offset, false, fromTouchScreen); 5271 return; 5272 } 5273 } 5274 // Handles can not cross and selection is at least one character. 5275 offset = getNextCursorOffset(anotherHandleOffset, !isStartHandle()); 5276 } 5277 positionAtCursorOffset(offset, false, fromTouchScreen); 5278 } 5279 5280 private boolean positionNearEdgeOfScrollingView(float x, boolean atRtl) { 5281 mTextView.getLocationOnScreen(mTextViewLocation); 5282 boolean nearEdge; 5283 if (atRtl == isStartHandle()) { 5284 int rightEdge = mTextViewLocation[0] + mTextView.getWidth() 5285 - mTextView.getPaddingRight(); 5286 nearEdge = x > rightEdge - mTextViewEdgeSlop; 5287 } else { 5288 int leftEdge = mTextViewLocation[0] + mTextView.getPaddingLeft(); 5289 nearEdge = x < leftEdge + mTextViewEdgeSlop; 5290 } 5291 return nearEdge; 5292 } 5293 5294 @Override 5295 protected boolean isAtRtlRun(@NonNull Layout layout, int offset) { 5296 final int offsetToCheck = isStartHandle() ? offset : Math.max(offset - 1, 0); 5297 return layout.isRtlCharAt(offsetToCheck); 5298 } 5299 5300 @Override 5301 public float getHorizontal(@NonNull Layout layout, int offset) { 5302 return getHorizontal(layout, offset, isStartHandle()); 5303 } 5304 5305 private float getHorizontal(@NonNull Layout layout, int offset, boolean startHandle) { 5306 final int line = layout.getLineForOffset(offset); 5307 final int offsetToCheck = startHandle ? offset : Math.max(offset - 1, 0); 5308 final boolean isRtlChar = layout.isRtlCharAt(offsetToCheck); 5309 final boolean isRtlParagraph = layout.getParagraphDirection(line) == -1; 5310 return (isRtlChar == isRtlParagraph) 5311 ? layout.getPrimaryHorizontal(offset) : layout.getSecondaryHorizontal(offset); 5312 } 5313 5314 @Override 5315 protected int getOffsetAtCoordinate(@NonNull Layout layout, int line, float x) { 5316 final float localX = mTextView.convertToLocalHorizontalCoordinate(x); 5317 final int primaryOffset = layout.getOffsetForHorizontal(line, localX, true); 5318 if (!layout.isLevelBoundary(primaryOffset)) { 5319 return primaryOffset; 5320 } 5321 final int secondaryOffset = layout.getOffsetForHorizontal(line, localX, false); 5322 final int currentOffset = getCurrentCursorOffset(); 5323 final int primaryDiff = Math.abs(primaryOffset - currentOffset); 5324 final int secondaryDiff = Math.abs(secondaryOffset - currentOffset); 5325 if (primaryDiff < secondaryDiff) { 5326 return primaryOffset; 5327 } else if (primaryDiff > secondaryDiff) { 5328 return secondaryOffset; 5329 } else { 5330 final int offsetToCheck = isStartHandle() 5331 ? currentOffset : Math.max(currentOffset - 1, 0); 5332 final boolean isRtlChar = layout.isRtlCharAt(offsetToCheck); 5333 final boolean isRtlParagraph = layout.getParagraphDirection(line) == -1; 5334 return isRtlChar == isRtlParagraph ? primaryOffset : secondaryOffset; 5335 } 5336 } 5337 5338 @MagnifierHandleTrigger 5339 protected int getMagnifierHandleTrigger() { 5340 return isStartHandle() 5341 ? MagnifierHandleTrigger.SELECTION_START 5342 : MagnifierHandleTrigger.SELECTION_END; 5343 } 5344 } 5345 5346 private int getCurrentLineAdjustedForSlop(Layout layout, int prevLine, float y) { 5347 final int trueLine = mTextView.getLineAtCoordinate(y); 5348 if (layout == null || prevLine > layout.getLineCount() 5349 || layout.getLineCount() <= 0 || prevLine < 0) { 5350 // Invalid parameters, just return whatever line is at y. 5351 return trueLine; 5352 } 5353 5354 if (Math.abs(trueLine - prevLine) >= 2) { 5355 // Only stick to lines if we're within a line of the previous selection. 5356 return trueLine; 5357 } 5358 5359 final float verticalOffset = mTextView.viewportToContentVerticalOffset(); 5360 final int lineCount = layout.getLineCount(); 5361 final float slop = mTextView.getLineHeight() * LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS; 5362 5363 final float firstLineTop = layout.getLineTop(0) + verticalOffset; 5364 final float prevLineTop = layout.getLineTop(prevLine) + verticalOffset; 5365 final float yTopBound = Math.max(prevLineTop - slop, firstLineTop + slop); 5366 5367 final float lastLineBottom = layout.getLineBottom(lineCount - 1) + verticalOffset; 5368 final float prevLineBottom = layout.getLineBottom(prevLine) + verticalOffset; 5369 final float yBottomBound = Math.min(prevLineBottom + slop, lastLineBottom - slop); 5370 5371 // Determine if we've moved lines based on y position and previous line. 5372 int currLine; 5373 if (y <= yTopBound) { 5374 currLine = Math.max(prevLine - 1, 0); 5375 } else if (y >= yBottomBound) { 5376 currLine = Math.min(prevLine + 1, lineCount - 1); 5377 } else { 5378 currLine = prevLine; 5379 } 5380 return currLine; 5381 } 5382 5383 /** 5384 * A CursorController instance can be used to control a cursor in the text. 5385 */ 5386 private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { 5387 /** 5388 * Makes the cursor controller visible on screen. 5389 * See also {@link #hide()}. 5390 */ 5391 public void show(); 5392 5393 /** 5394 * Hide the cursor controller from screen. 5395 * See also {@link #show()}. 5396 */ 5397 public void hide(); 5398 5399 /** 5400 * Called when the view is detached from window. Perform house keeping task, such as 5401 * stopping Runnable thread that would otherwise keep a reference on the context, thus 5402 * preventing the activity from being recycled. 5403 */ 5404 public void onDetached(); 5405 5406 public boolean isCursorBeingModified(); 5407 5408 public boolean isActive(); 5409 } 5410 5411 private class InsertionPointCursorController implements CursorController { 5412 private InsertionHandleView mHandle; 5413 5414 public void show() { 5415 getHandle().show(); 5416 5417 if (mSelectionModifierCursorController != null) { 5418 mSelectionModifierCursorController.hide(); 5419 } 5420 } 5421 5422 public void hide() { 5423 if (mHandle != null) { 5424 mHandle.hide(); 5425 } 5426 } 5427 5428 public void onTouchModeChanged(boolean isInTouchMode) { 5429 if (!isInTouchMode) { 5430 hide(); 5431 } 5432 } 5433 5434 private InsertionHandleView getHandle() { 5435 if (mSelectHandleCenter == null) { 5436 mSelectHandleCenter = mTextView.getContext().getDrawable( 5437 mTextView.mTextSelectHandleRes); 5438 } 5439 if (mHandle == null) { 5440 mHandle = new InsertionHandleView(mSelectHandleCenter); 5441 } 5442 return mHandle; 5443 } 5444 5445 @Override 5446 public void onDetached() { 5447 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 5448 observer.removeOnTouchModeChangeListener(this); 5449 5450 if (mHandle != null) mHandle.onDetached(); 5451 } 5452 5453 @Override 5454 public boolean isCursorBeingModified() { 5455 return mHandle != null && mHandle.isDragging(); 5456 } 5457 5458 @Override 5459 public boolean isActive() { 5460 return mHandle != null && mHandle.isShowing(); 5461 } 5462 5463 public void invalidateHandle() { 5464 if (mHandle != null) { 5465 mHandle.invalidate(); 5466 } 5467 } 5468 } 5469 5470 class SelectionModifierCursorController implements CursorController { 5471 // The cursor controller handles, lazily created when shown. 5472 private SelectionHandleView mStartHandle; 5473 private SelectionHandleView mEndHandle; 5474 // The offsets of that last touch down event. Remembered to start selection there. 5475 private int mMinTouchOffset, mMaxTouchOffset; 5476 5477 private float mDownPositionX, mDownPositionY; 5478 private boolean mGestureStayedInTapRegion; 5479 5480 // Where the user first starts the drag motion. 5481 private int mStartOffset = -1; 5482 5483 private boolean mHaventMovedEnoughToStartDrag; 5484 // The line that a selection happened most recently with the drag accelerator. 5485 private int mLineSelectionIsOn = -1; 5486 // Whether the drag accelerator has selected past the initial line. 5487 private boolean mSwitchedLines = false; 5488 5489 // Indicates the drag accelerator mode that the user is currently using. 5490 private int mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; 5491 // Drag accelerator is inactive. 5492 private static final int DRAG_ACCELERATOR_MODE_INACTIVE = 0; 5493 // Character based selection by dragging. Only for mouse. 5494 private static final int DRAG_ACCELERATOR_MODE_CHARACTER = 1; 5495 // Word based selection by dragging. Enabled after long pressing or double tapping. 5496 private static final int DRAG_ACCELERATOR_MODE_WORD = 2; 5497 // Paragraph based selection by dragging. Enabled after mouse triple click. 5498 private static final int DRAG_ACCELERATOR_MODE_PARAGRAPH = 3; 5499 5500 SelectionModifierCursorController() { 5501 resetTouchOffsets(); 5502 } 5503 5504 public void show() { 5505 if (mTextView.isInBatchEditMode()) { 5506 return; 5507 } 5508 initDrawables(); 5509 initHandles(); 5510 } 5511 5512 private void initDrawables() { 5513 if (mSelectHandleLeft == null) { 5514 mSelectHandleLeft = mTextView.getContext().getDrawable( 5515 mTextView.mTextSelectHandleLeftRes); 5516 } 5517 if (mSelectHandleRight == null) { 5518 mSelectHandleRight = mTextView.getContext().getDrawable( 5519 mTextView.mTextSelectHandleRightRes); 5520 } 5521 } 5522 5523 private void initHandles() { 5524 // Lazy object creation has to be done before updatePosition() is called. 5525 if (mStartHandle == null) { 5526 mStartHandle = new SelectionHandleView(mSelectHandleLeft, mSelectHandleRight, 5527 com.android.internal.R.id.selection_start_handle, 5528 HANDLE_TYPE_SELECTION_START); 5529 } 5530 if (mEndHandle == null) { 5531 mEndHandle = new SelectionHandleView(mSelectHandleRight, mSelectHandleLeft, 5532 com.android.internal.R.id.selection_end_handle, 5533 HANDLE_TYPE_SELECTION_END); 5534 } 5535 5536 mStartHandle.show(); 5537 mEndHandle.show(); 5538 5539 hideInsertionPointCursorController(); 5540 } 5541 5542 public void hide() { 5543 if (mStartHandle != null) mStartHandle.hide(); 5544 if (mEndHandle != null) mEndHandle.hide(); 5545 } 5546 5547 public void enterDrag(int dragAcceleratorMode) { 5548 // Just need to init the handles / hide insertion cursor. 5549 show(); 5550 mDragAcceleratorMode = dragAcceleratorMode; 5551 // Start location of selection. 5552 mStartOffset = mTextView.getOffsetForPosition(mLastDownPositionX, 5553 mLastDownPositionY); 5554 mLineSelectionIsOn = mTextView.getLineAtCoordinate(mLastDownPositionY); 5555 // Don't show the handles until user has lifted finger. 5556 hide(); 5557 5558 // This stops scrolling parents from intercepting the touch event, allowing 5559 // the user to continue dragging across the screen to select text; TextView will 5560 // scroll as necessary. 5561 mTextView.getParent().requestDisallowInterceptTouchEvent(true); 5562 mTextView.cancelLongPress(); 5563 } 5564 5565 public void onTouchEvent(MotionEvent event) { 5566 // This is done even when the View does not have focus, so that long presses can start 5567 // selection and tap can move cursor from this tap position. 5568 final float eventX = event.getX(); 5569 final float eventY = event.getY(); 5570 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 5571 switch (event.getActionMasked()) { 5572 case MotionEvent.ACTION_DOWN: 5573 if (extractedTextModeWillBeStarted()) { 5574 // Prevent duplicating the selection handles until the mode starts. 5575 hide(); 5576 } else { 5577 // Remember finger down position, to be able to start selection from there. 5578 mMinTouchOffset = mMaxTouchOffset = mTextView.getOffsetForPosition( 5579 eventX, eventY); 5580 5581 // Double tap detection 5582 if (mGestureStayedInTapRegion) { 5583 if (mTapState == TAP_STATE_DOUBLE_TAP 5584 || mTapState == TAP_STATE_TRIPLE_CLICK) { 5585 final float deltaX = eventX - mDownPositionX; 5586 final float deltaY = eventY - mDownPositionY; 5587 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 5588 5589 ViewConfiguration viewConfiguration = ViewConfiguration.get( 5590 mTextView.getContext()); 5591 int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop(); 5592 boolean stayedInArea = 5593 distanceSquared < doubleTapSlop * doubleTapSlop; 5594 5595 if (stayedInArea && (isMouse || isPositionOnText(eventX, eventY))) { 5596 if (mTapState == TAP_STATE_DOUBLE_TAP) { 5597 selectCurrentWordAndStartDrag(); 5598 } else if (mTapState == TAP_STATE_TRIPLE_CLICK) { 5599 selectCurrentParagraphAndStartDrag(); 5600 } 5601 mDiscardNextActionUp = true; 5602 } 5603 } 5604 } 5605 5606 mDownPositionX = eventX; 5607 mDownPositionY = eventY; 5608 mGestureStayedInTapRegion = true; 5609 mHaventMovedEnoughToStartDrag = true; 5610 } 5611 break; 5612 5613 case MotionEvent.ACTION_POINTER_DOWN: 5614 case MotionEvent.ACTION_POINTER_UP: 5615 // Handle multi-point gestures. Keep min and max offset positions. 5616 // Only activated for devices that correctly handle multi-touch. 5617 if (mTextView.getContext().getPackageManager().hasSystemFeature( 5618 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { 5619 updateMinAndMaxOffsets(event); 5620 } 5621 break; 5622 5623 case MotionEvent.ACTION_MOVE: 5624 final ViewConfiguration viewConfig = ViewConfiguration.get( 5625 mTextView.getContext()); 5626 final int touchSlop = viewConfig.getScaledTouchSlop(); 5627 5628 if (mGestureStayedInTapRegion || mHaventMovedEnoughToStartDrag) { 5629 final float deltaX = eventX - mDownPositionX; 5630 final float deltaY = eventY - mDownPositionY; 5631 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 5632 5633 if (mGestureStayedInTapRegion) { 5634 int doubleTapTouchSlop = viewConfig.getScaledDoubleTapTouchSlop(); 5635 mGestureStayedInTapRegion = 5636 distanceSquared <= doubleTapTouchSlop * doubleTapTouchSlop; 5637 } 5638 if (mHaventMovedEnoughToStartDrag) { 5639 // We don't start dragging until the user has moved enough. 5640 mHaventMovedEnoughToStartDrag = 5641 distanceSquared <= touchSlop * touchSlop; 5642 } 5643 } 5644 5645 if (isMouse && !isDragAcceleratorActive()) { 5646 final int offset = mTextView.getOffsetForPosition(eventX, eventY); 5647 if (mTextView.hasSelection() 5648 && (!mHaventMovedEnoughToStartDrag || mStartOffset != offset) 5649 && offset >= mTextView.getSelectionStart() 5650 && offset <= mTextView.getSelectionEnd()) { 5651 startDragAndDrop(); 5652 break; 5653 } 5654 5655 if (mStartOffset != offset) { 5656 // Start character based drag accelerator. 5657 stopTextActionMode(); 5658 enterDrag(DRAG_ACCELERATOR_MODE_CHARACTER); 5659 mDiscardNextActionUp = true; 5660 mHaventMovedEnoughToStartDrag = false; 5661 } 5662 } 5663 5664 if (mStartHandle != null && mStartHandle.isShowing()) { 5665 // Don't do the drag if the handles are showing already. 5666 break; 5667 } 5668 5669 updateSelection(event); 5670 break; 5671 5672 case MotionEvent.ACTION_UP: 5673 if (!isDragAcceleratorActive()) { 5674 break; 5675 } 5676 updateSelection(event); 5677 5678 // No longer dragging to select text, let the parent intercept events. 5679 mTextView.getParent().requestDisallowInterceptTouchEvent(false); 5680 5681 // No longer the first dragging motion, reset. 5682 resetDragAcceleratorState(); 5683 5684 if (mTextView.hasSelection()) { 5685 // Drag selection should not be adjusted by the text classifier. 5686 startSelectionActionModeAsync(mHaventMovedEnoughToStartDrag); 5687 } 5688 break; 5689 } 5690 } 5691 5692 private void updateSelection(MotionEvent event) { 5693 if (mTextView.getLayout() != null) { 5694 switch (mDragAcceleratorMode) { 5695 case DRAG_ACCELERATOR_MODE_CHARACTER: 5696 updateCharacterBasedSelection(event); 5697 break; 5698 case DRAG_ACCELERATOR_MODE_WORD: 5699 updateWordBasedSelection(event); 5700 break; 5701 case DRAG_ACCELERATOR_MODE_PARAGRAPH: 5702 updateParagraphBasedSelection(event); 5703 break; 5704 } 5705 } 5706 } 5707 5708 /** 5709 * If the TextView allows text selection, selects the current paragraph and starts a drag. 5710 * 5711 * @return true if the drag was started. 5712 */ 5713 private boolean selectCurrentParagraphAndStartDrag() { 5714 if (mInsertionActionModeRunnable != null) { 5715 mTextView.removeCallbacks(mInsertionActionModeRunnable); 5716 } 5717 stopTextActionMode(); 5718 if (!selectCurrentParagraph()) { 5719 return false; 5720 } 5721 enterDrag(SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_PARAGRAPH); 5722 return true; 5723 } 5724 5725 private void updateCharacterBasedSelection(MotionEvent event) { 5726 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 5727 updateSelectionInternal(mStartOffset, offset, 5728 event.isFromSource(InputDevice.SOURCE_TOUCHSCREEN)); 5729 } 5730 5731 private void updateWordBasedSelection(MotionEvent event) { 5732 if (mHaventMovedEnoughToStartDrag) { 5733 return; 5734 } 5735 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 5736 final ViewConfiguration viewConfig = ViewConfiguration.get( 5737 mTextView.getContext()); 5738 final float eventX = event.getX(); 5739 final float eventY = event.getY(); 5740 final int currLine; 5741 if (isMouse) { 5742 // No need to offset the y coordinate for mouse input. 5743 currLine = mTextView.getLineAtCoordinate(eventY); 5744 } else { 5745 float y = eventY; 5746 if (mSwitchedLines) { 5747 // Offset the finger by the same vertical offset as the handles. 5748 // This improves visibility of the content being selected by 5749 // shifting the finger below the content, this is applied once 5750 // the user has switched lines. 5751 final int touchSlop = viewConfig.getScaledTouchSlop(); 5752 final float fingerOffset = (mStartHandle != null) 5753 ? mStartHandle.getIdealVerticalOffset() 5754 : touchSlop; 5755 y = eventY - fingerOffset; 5756 } 5757 5758 currLine = getCurrentLineAdjustedForSlop(mTextView.getLayout(), mLineSelectionIsOn, 5759 y); 5760 if (!mSwitchedLines && currLine != mLineSelectionIsOn) { 5761 // Break early here, we want to offset the finger position from 5762 // the selection highlight, once the user moved their finger 5763 // to a different line we should apply the offset and *not* switch 5764 // lines until recomputing the position with the finger offset. 5765 mSwitchedLines = true; 5766 return; 5767 } 5768 } 5769 5770 int startOffset; 5771 int offset = mTextView.getOffsetAtCoordinate(currLine, eventX); 5772 // Snap to word boundaries. 5773 if (mStartOffset < offset) { 5774 // Expanding with end handle. 5775 offset = getWordEnd(offset); 5776 startOffset = getWordStart(mStartOffset); 5777 } else { 5778 // Expanding with start handle. 5779 offset = getWordStart(offset); 5780 startOffset = getWordEnd(mStartOffset); 5781 if (startOffset == offset) { 5782 offset = getNextCursorOffset(offset, false); 5783 } 5784 } 5785 mLineSelectionIsOn = currLine; 5786 updateSelectionInternal(startOffset, offset, 5787 event.isFromSource(InputDevice.SOURCE_TOUCHSCREEN)); 5788 } 5789 5790 private void updateParagraphBasedSelection(MotionEvent event) { 5791 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 5792 5793 final int start = Math.min(offset, mStartOffset); 5794 final int end = Math.max(offset, mStartOffset); 5795 final long paragraphsRange = getParagraphsRange(start, end); 5796 final int selectionStart = TextUtils.unpackRangeStartFromLong(paragraphsRange); 5797 final int selectionEnd = TextUtils.unpackRangeEndFromLong(paragraphsRange); 5798 updateSelectionInternal(selectionStart, selectionEnd, 5799 event.isFromSource(InputDevice.SOURCE_TOUCHSCREEN)); 5800 } 5801 5802 private void updateSelectionInternal(int selectionStart, int selectionEnd, 5803 boolean fromTouchScreen) { 5804 final boolean performHapticFeedback = fromTouchScreen && mHapticTextHandleEnabled 5805 && ((mTextView.getSelectionStart() != selectionStart) 5806 || (mTextView.getSelectionEnd() != selectionEnd)); 5807 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 5808 if (performHapticFeedback) { 5809 mTextView.performHapticFeedback(HapticFeedbackConstants.TEXT_HANDLE_MOVE); 5810 } 5811 } 5812 5813 /** 5814 * @param event 5815 */ 5816 private void updateMinAndMaxOffsets(MotionEvent event) { 5817 int pointerCount = event.getPointerCount(); 5818 for (int index = 0; index < pointerCount; index++) { 5819 int offset = mTextView.getOffsetForPosition(event.getX(index), event.getY(index)); 5820 if (offset < mMinTouchOffset) mMinTouchOffset = offset; 5821 if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; 5822 } 5823 } 5824 5825 public int getMinTouchOffset() { 5826 return mMinTouchOffset; 5827 } 5828 5829 public int getMaxTouchOffset() { 5830 return mMaxTouchOffset; 5831 } 5832 5833 public void resetTouchOffsets() { 5834 mMinTouchOffset = mMaxTouchOffset = -1; 5835 resetDragAcceleratorState(); 5836 } 5837 5838 private void resetDragAcceleratorState() { 5839 mStartOffset = -1; 5840 mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; 5841 mSwitchedLines = false; 5842 final int selectionStart = mTextView.getSelectionStart(); 5843 final int selectionEnd = mTextView.getSelectionEnd(); 5844 if (selectionStart > selectionEnd) { 5845 Selection.setSelection((Spannable) mTextView.getText(), 5846 selectionEnd, selectionStart); 5847 } 5848 } 5849 5850 /** 5851 * @return true iff this controller is currently used to move the selection start. 5852 */ 5853 public boolean isSelectionStartDragged() { 5854 return mStartHandle != null && mStartHandle.isDragging(); 5855 } 5856 5857 @Override 5858 public boolean isCursorBeingModified() { 5859 return isDragAcceleratorActive() || isSelectionStartDragged() 5860 || (mEndHandle != null && mEndHandle.isDragging()); 5861 } 5862 5863 /** 5864 * @return true if the user is selecting text using the drag accelerator. 5865 */ 5866 public boolean isDragAcceleratorActive() { 5867 return mDragAcceleratorMode != DRAG_ACCELERATOR_MODE_INACTIVE; 5868 } 5869 5870 public void onTouchModeChanged(boolean isInTouchMode) { 5871 if (!isInTouchMode) { 5872 hide(); 5873 } 5874 } 5875 5876 @Override 5877 public void onDetached() { 5878 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 5879 observer.removeOnTouchModeChangeListener(this); 5880 5881 if (mStartHandle != null) mStartHandle.onDetached(); 5882 if (mEndHandle != null) mEndHandle.onDetached(); 5883 } 5884 5885 @Override 5886 public boolean isActive() { 5887 return mStartHandle != null && mStartHandle.isShowing(); 5888 } 5889 5890 public void invalidateHandles() { 5891 if (mStartHandle != null) { 5892 mStartHandle.invalidate(); 5893 } 5894 if (mEndHandle != null) { 5895 mEndHandle.invalidate(); 5896 } 5897 } 5898 } 5899 5900 private class CorrectionHighlighter { 5901 private final Path mPath = new Path(); 5902 private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 5903 private int mStart, mEnd; 5904 private long mFadingStartTime; 5905 private RectF mTempRectF; 5906 private static final int FADE_OUT_DURATION = 400; 5907 5908 public CorrectionHighlighter() { 5909 mPaint.setCompatibilityScaling( 5910 mTextView.getResources().getCompatibilityInfo().applicationScale); 5911 mPaint.setStyle(Paint.Style.FILL); 5912 } 5913 5914 public void highlight(CorrectionInfo info) { 5915 mStart = info.getOffset(); 5916 mEnd = mStart + info.getNewText().length(); 5917 mFadingStartTime = SystemClock.uptimeMillis(); 5918 5919 if (mStart < 0 || mEnd < 0) { 5920 stopAnimation(); 5921 } 5922 } 5923 5924 public void draw(Canvas canvas, int cursorOffsetVertical) { 5925 if (updatePath() && updatePaint()) { 5926 if (cursorOffsetVertical != 0) { 5927 canvas.translate(0, cursorOffsetVertical); 5928 } 5929 5930 canvas.drawPath(mPath, mPaint); 5931 5932 if (cursorOffsetVertical != 0) { 5933 canvas.translate(0, -cursorOffsetVertical); 5934 } 5935 invalidate(true); // TODO invalidate cursor region only 5936 } else { 5937 stopAnimation(); 5938 invalidate(false); // TODO invalidate cursor region only 5939 } 5940 } 5941 5942 private boolean updatePaint() { 5943 final long duration = SystemClock.uptimeMillis() - mFadingStartTime; 5944 if (duration > FADE_OUT_DURATION) return false; 5945 5946 final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; 5947 final int highlightColorAlpha = Color.alpha(mTextView.mHighlightColor); 5948 final int color = (mTextView.mHighlightColor & 0x00FFFFFF) 5949 + ((int) (highlightColorAlpha * coef) << 24); 5950 mPaint.setColor(color); 5951 return true; 5952 } 5953 5954 private boolean updatePath() { 5955 final Layout layout = mTextView.getLayout(); 5956 if (layout == null) return false; 5957 5958 // Update in case text is edited while the animation is run 5959 final int length = mTextView.getText().length(); 5960 int start = Math.min(length, mStart); 5961 int end = Math.min(length, mEnd); 5962 5963 mPath.reset(); 5964 layout.getSelectionPath(start, end, mPath); 5965 return true; 5966 } 5967 5968 private void invalidate(boolean delayed) { 5969 if (mTextView.getLayout() == null) return; 5970 5971 if (mTempRectF == null) mTempRectF = new RectF(); 5972 mPath.computeBounds(mTempRectF, false); 5973 5974 int left = mTextView.getCompoundPaddingLeft(); 5975 int top = mTextView.getExtendedPaddingTop() + mTextView.getVerticalOffset(true); 5976 5977 if (delayed) { 5978 mTextView.postInvalidateOnAnimation( 5979 left + (int) mTempRectF.left, top + (int) mTempRectF.top, 5980 left + (int) mTempRectF.right, top + (int) mTempRectF.bottom); 5981 } else { 5982 mTextView.postInvalidate((int) mTempRectF.left, (int) mTempRectF.top, 5983 (int) mTempRectF.right, (int) mTempRectF.bottom); 5984 } 5985 } 5986 5987 private void stopAnimation() { 5988 Editor.this.mCorrectionHighlighter = null; 5989 } 5990 } 5991 5992 private static class ErrorPopup extends PopupWindow { 5993 private boolean mAbove = false; 5994 private final TextView mView; 5995 private int mPopupInlineErrorBackgroundId = 0; 5996 private int mPopupInlineErrorAboveBackgroundId = 0; 5997 5998 ErrorPopup(TextView v, int width, int height) { 5999 super(v, width, height); 6000 mView = v; 6001 // Make sure the TextView has a background set as it will be used the first time it is 6002 // shown and positioned. Initialized with below background, which should have 6003 // dimensions identical to the above version for this to work (and is more likely). 6004 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 6005 com.android.internal.R.styleable.Theme_errorMessageBackground); 6006 mView.setBackgroundResource(mPopupInlineErrorBackgroundId); 6007 } 6008 6009 void fixDirection(boolean above) { 6010 mAbove = above; 6011 6012 if (above) { 6013 mPopupInlineErrorAboveBackgroundId = 6014 getResourceId(mPopupInlineErrorAboveBackgroundId, 6015 com.android.internal.R.styleable.Theme_errorMessageAboveBackground); 6016 } else { 6017 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 6018 com.android.internal.R.styleable.Theme_errorMessageBackground); 6019 } 6020 6021 mView.setBackgroundResource( 6022 above ? mPopupInlineErrorAboveBackgroundId : mPopupInlineErrorBackgroundId); 6023 } 6024 6025 private int getResourceId(int currentId, int index) { 6026 if (currentId == 0) { 6027 TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( 6028 R.styleable.Theme); 6029 currentId = styledAttributes.getResourceId(index, 0); 6030 styledAttributes.recycle(); 6031 } 6032 return currentId; 6033 } 6034 6035 @Override 6036 public void update(int x, int y, int w, int h, boolean force) { 6037 super.update(x, y, w, h, force); 6038 6039 boolean above = isAboveAnchor(); 6040 if (above != mAbove) { 6041 fixDirection(above); 6042 } 6043 } 6044 } 6045 6046 static class InputContentType { 6047 int imeOptions = EditorInfo.IME_NULL; 6048 String privateImeOptions; 6049 CharSequence imeActionLabel; 6050 int imeActionId; 6051 Bundle extras; 6052 OnEditorActionListener onEditorActionListener; 6053 boolean enterDown; 6054 LocaleList imeHintLocales; 6055 } 6056 6057 static class InputMethodState { 6058 ExtractedTextRequest mExtractedTextRequest; 6059 final ExtractedText mExtractedText = new ExtractedText(); 6060 int mBatchEditNesting; 6061 boolean mCursorChanged; 6062 boolean mSelectionModeChanged; 6063 boolean mContentChanged; 6064 int mChangedStart, mChangedEnd, mChangedDelta; 6065 } 6066 6067 /** 6068 * @return True iff (start, end) is a valid range within the text. 6069 */ 6070 private static boolean isValidRange(CharSequence text, int start, int end) { 6071 return 0 <= start && start <= end && end <= text.length(); 6072 } 6073 6074 @VisibleForTesting 6075 public SuggestionsPopupWindow getSuggestionsPopupWindowForTesting() { 6076 return mSuggestionsPopupWindow; 6077 } 6078 6079 /** 6080 * An InputFilter that monitors text input to maintain undo history. It does not modify the 6081 * text being typed (and hence always returns null from the filter() method). 6082 * 6083 * TODO: Make this span aware. 6084 */ 6085 public static class UndoInputFilter implements InputFilter { 6086 private final Editor mEditor; 6087 6088 // Whether the current filter pass is directly caused by an end-user text edit. 6089 private boolean mIsUserEdit; 6090 6091 // Whether the text field is handling an IME composition. Must be parceled in case the user 6092 // rotates the screen during composition. 6093 private boolean mHasComposition; 6094 6095 // Whether the user is expanding or shortening the text 6096 private boolean mExpanding; 6097 6098 // Whether the previous edit operation was in the current batch edit. 6099 private boolean mPreviousOperationWasInSameBatchEdit; 6100 6101 public UndoInputFilter(Editor editor) { 6102 mEditor = editor; 6103 } 6104 6105 public void saveInstanceState(Parcel parcel) { 6106 parcel.writeInt(mIsUserEdit ? 1 : 0); 6107 parcel.writeInt(mHasComposition ? 1 : 0); 6108 parcel.writeInt(mExpanding ? 1 : 0); 6109 parcel.writeInt(mPreviousOperationWasInSameBatchEdit ? 1 : 0); 6110 } 6111 6112 public void restoreInstanceState(Parcel parcel) { 6113 mIsUserEdit = parcel.readInt() != 0; 6114 mHasComposition = parcel.readInt() != 0; 6115 mExpanding = parcel.readInt() != 0; 6116 mPreviousOperationWasInSameBatchEdit = parcel.readInt() != 0; 6117 } 6118 6119 /** 6120 * Signals that a user-triggered edit is starting. 6121 */ 6122 public void beginBatchEdit() { 6123 if (DEBUG_UNDO) Log.d(TAG, "beginBatchEdit"); 6124 mIsUserEdit = true; 6125 } 6126 6127 public void endBatchEdit() { 6128 if (DEBUG_UNDO) Log.d(TAG, "endBatchEdit"); 6129 mIsUserEdit = false; 6130 mPreviousOperationWasInSameBatchEdit = false; 6131 } 6132 6133 @Override 6134 public CharSequence filter(CharSequence source, int start, int end, 6135 Spanned dest, int dstart, int dend) { 6136 if (DEBUG_UNDO) { 6137 Log.d(TAG, "filter: source=" + source + " (" + start + "-" + end + ") " 6138 + "dest=" + dest + " (" + dstart + "-" + dend + ")"); 6139 } 6140 6141 // Check to see if this edit should be tracked for undo. 6142 if (!canUndoEdit(source, start, end, dest, dstart, dend)) { 6143 return null; 6144 } 6145 6146 final boolean hadComposition = mHasComposition; 6147 mHasComposition = isComposition(source); 6148 final boolean wasExpanding = mExpanding; 6149 boolean shouldCreateSeparateState = false; 6150 if ((end - start) != (dend - dstart)) { 6151 mExpanding = (end - start) > (dend - dstart); 6152 if (hadComposition && mExpanding != wasExpanding) { 6153 shouldCreateSeparateState = true; 6154 } 6155 } 6156 6157 // Handle edit. 6158 handleEdit(source, start, end, dest, dstart, dend, shouldCreateSeparateState); 6159 return null; 6160 } 6161 6162 void freezeLastEdit() { 6163 mEditor.mUndoManager.beginUpdate("Edit text"); 6164 EditOperation lastEdit = getLastEdit(); 6165 if (lastEdit != null) { 6166 lastEdit.mFrozen = true; 6167 } 6168 mEditor.mUndoManager.endUpdate(); 6169 } 6170 6171 @Retention(RetentionPolicy.SOURCE) 6172 @IntDef(prefix = { "MERGE_EDIT_MODE_" }, value = { 6173 MERGE_EDIT_MODE_FORCE_MERGE, 6174 MERGE_EDIT_MODE_NEVER_MERGE, 6175 MERGE_EDIT_MODE_NORMAL 6176 }) 6177 private @interface MergeMode {} 6178 private static final int MERGE_EDIT_MODE_FORCE_MERGE = 0; 6179 private static final int MERGE_EDIT_MODE_NEVER_MERGE = 1; 6180 /** Use {@link EditOperation#mergeWith} to merge */ 6181 private static final int MERGE_EDIT_MODE_NORMAL = 2; 6182 6183 private void handleEdit(CharSequence source, int start, int end, 6184 Spanned dest, int dstart, int dend, boolean shouldCreateSeparateState) { 6185 // An application may install a TextWatcher to provide additional modifications after 6186 // the initial input filters run (e.g. a credit card formatter that adds spaces to a 6187 // string). This results in multiple filter() calls for what the user considers to be 6188 // a single operation. Always undo the whole set of changes in one step. 6189 @MergeMode 6190 final int mergeMode; 6191 if (isInTextWatcher() || mPreviousOperationWasInSameBatchEdit) { 6192 mergeMode = MERGE_EDIT_MODE_FORCE_MERGE; 6193 } else if (shouldCreateSeparateState) { 6194 mergeMode = MERGE_EDIT_MODE_NEVER_MERGE; 6195 } else { 6196 mergeMode = MERGE_EDIT_MODE_NORMAL; 6197 } 6198 // Build a new operation with all the information from this edit. 6199 String newText = TextUtils.substring(source, start, end); 6200 String oldText = TextUtils.substring(dest, dstart, dend); 6201 EditOperation edit = new EditOperation(mEditor, oldText, dstart, newText, 6202 mHasComposition); 6203 if (mHasComposition && TextUtils.equals(edit.mNewText, edit.mOldText)) { 6204 return; 6205 } 6206 recordEdit(edit, mergeMode); 6207 } 6208 6209 private EditOperation getLastEdit() { 6210 final UndoManager um = mEditor.mUndoManager; 6211 return um.getLastOperation( 6212 EditOperation.class, mEditor.mUndoOwner, UndoManager.MERGE_MODE_UNIQUE); 6213 } 6214 /** 6215 * Fetches the last undo operation and checks to see if a new edit should be merged into it. 6216 * If forceMerge is true then the new edit is always merged. 6217 */ 6218 private void recordEdit(EditOperation edit, @MergeMode int mergeMode) { 6219 // Fetch the last edit operation and attempt to merge in the new edit. 6220 final UndoManager um = mEditor.mUndoManager; 6221 um.beginUpdate("Edit text"); 6222 EditOperation lastEdit = getLastEdit(); 6223 if (lastEdit == null) { 6224 // Add this as the first edit. 6225 if (DEBUG_UNDO) Log.d(TAG, "filter: adding first op " + edit); 6226 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 6227 } else if (mergeMode == MERGE_EDIT_MODE_FORCE_MERGE) { 6228 // Forced merges take priority because they could be the result of a non-user-edit 6229 // change and this case should not create a new undo operation. 6230 if (DEBUG_UNDO) Log.d(TAG, "filter: force merge " + edit); 6231 lastEdit.forceMergeWith(edit); 6232 } else if (!mIsUserEdit) { 6233 // An application directly modified the Editable outside of a text edit. Treat this 6234 // as a new change and don't attempt to merge. 6235 if (DEBUG_UNDO) Log.d(TAG, "non-user edit, new op " + edit); 6236 um.commitState(mEditor.mUndoOwner); 6237 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 6238 } else if (mergeMode == MERGE_EDIT_MODE_NORMAL && lastEdit.mergeWith(edit)) { 6239 // Merge succeeded, nothing else to do. 6240 if (DEBUG_UNDO) Log.d(TAG, "filter: merge succeeded, created " + lastEdit); 6241 } else { 6242 // Could not merge with the last edit, so commit the last edit and add this edit. 6243 if (DEBUG_UNDO) Log.d(TAG, "filter: merge failed, adding " + edit); 6244 um.commitState(mEditor.mUndoOwner); 6245 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 6246 } 6247 mPreviousOperationWasInSameBatchEdit = mIsUserEdit; 6248 um.endUpdate(); 6249 } 6250 6251 private boolean canUndoEdit(CharSequence source, int start, int end, 6252 Spanned dest, int dstart, int dend) { 6253 if (!mEditor.mAllowUndo) { 6254 if (DEBUG_UNDO) Log.d(TAG, "filter: undo is disabled"); 6255 return false; 6256 } 6257 6258 if (mEditor.mUndoManager.isInUndo()) { 6259 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping, currently performing undo/redo"); 6260 return false; 6261 } 6262 6263 // Text filters run before input operations are applied. However, some input operations 6264 // are invalid and will throw exceptions when applied. This is common in tests. Don't 6265 // attempt to undo invalid operations. 6266 if (!isValidRange(source, start, end) || !isValidRange(dest, dstart, dend)) { 6267 if (DEBUG_UNDO) Log.d(TAG, "filter: invalid op"); 6268 return false; 6269 } 6270 6271 // Earlier filters can rewrite input to be a no-op, for example due to a length limit 6272 // on an input field. Skip no-op changes. 6273 if (start == end && dstart == dend) { 6274 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping no-op"); 6275 return false; 6276 } 6277 6278 return true; 6279 } 6280 6281 private static boolean isComposition(CharSequence source) { 6282 if (!(source instanceof Spannable)) { 6283 return false; 6284 } 6285 // This is a composition edit if the source has a non-zero-length composing span. 6286 Spannable text = (Spannable) source; 6287 int composeBegin = EditableInputConnection.getComposingSpanStart(text); 6288 int composeEnd = EditableInputConnection.getComposingSpanEnd(text); 6289 return composeBegin < composeEnd; 6290 } 6291 6292 private boolean isInTextWatcher() { 6293 CharSequence text = mEditor.mTextView.getText(); 6294 return (text instanceof SpannableStringBuilder) 6295 && ((SpannableStringBuilder) text).getTextWatcherDepth() > 0; 6296 } 6297 } 6298 6299 /** 6300 * An operation to undo a single "edit" to a text view. 6301 */ 6302 public static class EditOperation extends UndoOperation<Editor> { 6303 private static final int TYPE_INSERT = 0; 6304 private static final int TYPE_DELETE = 1; 6305 private static final int TYPE_REPLACE = 2; 6306 6307 private int mType; 6308 private String mOldText; 6309 private String mNewText; 6310 private int mStart; 6311 6312 private int mOldCursorPos; 6313 private int mNewCursorPos; 6314 private boolean mFrozen; 6315 private boolean mIsComposition; 6316 6317 /** 6318 * Constructs an edit operation from a text input operation on editor that replaces the 6319 * oldText starting at dstart with newText. 6320 */ 6321 public EditOperation(Editor editor, String oldText, int dstart, String newText, 6322 boolean isComposition) { 6323 super(editor.mUndoOwner); 6324 mOldText = oldText; 6325 mNewText = newText; 6326 6327 // Determine the type of the edit. 6328 if (mNewText.length() > 0 && mOldText.length() == 0) { 6329 mType = TYPE_INSERT; 6330 } else if (mNewText.length() == 0 && mOldText.length() > 0) { 6331 mType = TYPE_DELETE; 6332 } else { 6333 mType = TYPE_REPLACE; 6334 } 6335 6336 mStart = dstart; 6337 // Store cursor data. 6338 mOldCursorPos = editor.mTextView.getSelectionStart(); 6339 mNewCursorPos = dstart + mNewText.length(); 6340 mIsComposition = isComposition; 6341 } 6342 6343 public EditOperation(Parcel src, ClassLoader loader) { 6344 super(src, loader); 6345 mType = src.readInt(); 6346 mOldText = src.readString(); 6347 mNewText = src.readString(); 6348 mStart = src.readInt(); 6349 mOldCursorPos = src.readInt(); 6350 mNewCursorPos = src.readInt(); 6351 mFrozen = src.readInt() == 1; 6352 mIsComposition = src.readInt() == 1; 6353 } 6354 6355 @Override 6356 public void writeToParcel(Parcel dest, int flags) { 6357 dest.writeInt(mType); 6358 dest.writeString(mOldText); 6359 dest.writeString(mNewText); 6360 dest.writeInt(mStart); 6361 dest.writeInt(mOldCursorPos); 6362 dest.writeInt(mNewCursorPos); 6363 dest.writeInt(mFrozen ? 1 : 0); 6364 dest.writeInt(mIsComposition ? 1 : 0); 6365 } 6366 6367 private int getNewTextEnd() { 6368 return mStart + mNewText.length(); 6369 } 6370 6371 private int getOldTextEnd() { 6372 return mStart + mOldText.length(); 6373 } 6374 6375 @Override 6376 public void commit() { 6377 } 6378 6379 @Override 6380 public void undo() { 6381 if (DEBUG_UNDO) Log.d(TAG, "undo"); 6382 // Remove the new text and insert the old. 6383 Editor editor = getOwnerData(); 6384 Editable text = (Editable) editor.mTextView.getText(); 6385 modifyText(text, mStart, getNewTextEnd(), mOldText, mStart, mOldCursorPos); 6386 } 6387 6388 @Override 6389 public void redo() { 6390 if (DEBUG_UNDO) Log.d(TAG, "redo"); 6391 // Remove the old text and insert the new. 6392 Editor editor = getOwnerData(); 6393 Editable text = (Editable) editor.mTextView.getText(); 6394 modifyText(text, mStart, getOldTextEnd(), mNewText, mStart, mNewCursorPos); 6395 } 6396 6397 /** 6398 * Attempts to merge this existing operation with a new edit. 6399 * @param edit The new edit operation. 6400 * @return If the merge succeeded, returns true. Otherwise returns false and leaves this 6401 * object unchanged. 6402 */ 6403 private boolean mergeWith(EditOperation edit) { 6404 if (DEBUG_UNDO) { 6405 Log.d(TAG, "mergeWith old " + this); 6406 Log.d(TAG, "mergeWith new " + edit); 6407 } 6408 6409 if (mFrozen) { 6410 return false; 6411 } 6412 6413 switch (mType) { 6414 case TYPE_INSERT: 6415 return mergeInsertWith(edit); 6416 case TYPE_DELETE: 6417 return mergeDeleteWith(edit); 6418 case TYPE_REPLACE: 6419 return mergeReplaceWith(edit); 6420 default: 6421 return false; 6422 } 6423 } 6424 6425 private boolean mergeInsertWith(EditOperation edit) { 6426 if (edit.mType == TYPE_INSERT) { 6427 // Merge insertions that are contiguous even when it's frozen. 6428 if (getNewTextEnd() != edit.mStart) { 6429 return false; 6430 } 6431 mNewText += edit.mNewText; 6432 mNewCursorPos = edit.mNewCursorPos; 6433 mFrozen = edit.mFrozen; 6434 mIsComposition = edit.mIsComposition; 6435 return true; 6436 } 6437 if (mIsComposition && edit.mType == TYPE_REPLACE 6438 && mStart <= edit.mStart && getNewTextEnd() >= edit.getOldTextEnd()) { 6439 // Merge insertion with replace as they can be single insertion. 6440 mNewText = mNewText.substring(0, edit.mStart - mStart) + edit.mNewText 6441 + mNewText.substring(edit.getOldTextEnd() - mStart, mNewText.length()); 6442 mNewCursorPos = edit.mNewCursorPos; 6443 mIsComposition = edit.mIsComposition; 6444 return true; 6445 } 6446 return false; 6447 } 6448 6449 // TODO: Support forward delete. 6450 private boolean mergeDeleteWith(EditOperation edit) { 6451 // Only merge continuous deletes. 6452 if (edit.mType != TYPE_DELETE) { 6453 return false; 6454 } 6455 // Only merge deletions that are contiguous. 6456 if (mStart != edit.getOldTextEnd()) { 6457 return false; 6458 } 6459 mStart = edit.mStart; 6460 mOldText = edit.mOldText + mOldText; 6461 mNewCursorPos = edit.mNewCursorPos; 6462 mIsComposition = edit.mIsComposition; 6463 return true; 6464 } 6465 6466 private boolean mergeReplaceWith(EditOperation edit) { 6467 if (edit.mType == TYPE_INSERT && getNewTextEnd() == edit.mStart) { 6468 // Merge with adjacent insert. 6469 mNewText += edit.mNewText; 6470 mNewCursorPos = edit.mNewCursorPos; 6471 return true; 6472 } 6473 if (!mIsComposition) { 6474 return false; 6475 } 6476 if (edit.mType == TYPE_DELETE && mStart <= edit.mStart 6477 && getNewTextEnd() >= edit.getOldTextEnd()) { 6478 // Merge with delete as they can be single operation. 6479 mNewText = mNewText.substring(0, edit.mStart - mStart) 6480 + mNewText.substring(edit.getOldTextEnd() - mStart, mNewText.length()); 6481 if (mNewText.isEmpty()) { 6482 mType = TYPE_DELETE; 6483 } 6484 mNewCursorPos = edit.mNewCursorPos; 6485 mIsComposition = edit.mIsComposition; 6486 return true; 6487 } 6488 if (edit.mType == TYPE_REPLACE && mStart == edit.mStart 6489 && TextUtils.equals(mNewText, edit.mOldText)) { 6490 // Merge with the replace that replaces the same region. 6491 mNewText = edit.mNewText; 6492 mNewCursorPos = edit.mNewCursorPos; 6493 mIsComposition = edit.mIsComposition; 6494 return true; 6495 } 6496 return false; 6497 } 6498 6499 /** 6500 * Forcibly creates a single merged edit operation by simulating the entire text 6501 * contents being replaced. 6502 */ 6503 public void forceMergeWith(EditOperation edit) { 6504 if (DEBUG_UNDO) Log.d(TAG, "forceMerge"); 6505 if (mergeWith(edit)) { 6506 return; 6507 } 6508 Editor editor = getOwnerData(); 6509 6510 // Copy the text of the current field. 6511 // NOTE: Using StringBuilder instead of SpannableStringBuilder would be somewhat faster, 6512 // but would require two parallel implementations of modifyText() because Editable and 6513 // StringBuilder do not share an interface for replace/delete/insert. 6514 Editable editable = (Editable) editor.mTextView.getText(); 6515 Editable originalText = new SpannableStringBuilder(editable.toString()); 6516 6517 // Roll back the last operation. 6518 modifyText(originalText, mStart, getNewTextEnd(), mOldText, mStart, mOldCursorPos); 6519 6520 // Clone the text again and apply the new operation. 6521 Editable finalText = new SpannableStringBuilder(editable.toString()); 6522 modifyText(finalText, edit.mStart, edit.getOldTextEnd(), 6523 edit.mNewText, edit.mStart, edit.mNewCursorPos); 6524 6525 // Convert this operation into a replace operation. 6526 mType = TYPE_REPLACE; 6527 mNewText = finalText.toString(); 6528 mOldText = originalText.toString(); 6529 mStart = 0; 6530 mNewCursorPos = edit.mNewCursorPos; 6531 mIsComposition = edit.mIsComposition; 6532 // mOldCursorPos is unchanged. 6533 } 6534 6535 private static void modifyText(Editable text, int deleteFrom, int deleteTo, 6536 CharSequence newText, int newTextInsertAt, int newCursorPos) { 6537 // Apply the edit if it is still valid. 6538 if (isValidRange(text, deleteFrom, deleteTo) 6539 && newTextInsertAt <= text.length() - (deleteTo - deleteFrom)) { 6540 if (deleteFrom != deleteTo) { 6541 text.delete(deleteFrom, deleteTo); 6542 } 6543 if (newText.length() != 0) { 6544 text.insert(newTextInsertAt, newText); 6545 } 6546 } 6547 // Restore the cursor position. If there wasn't an old cursor (newCursorPos == -1) then 6548 // don't explicitly set it and rely on SpannableStringBuilder to position it. 6549 // TODO: Select all the text that was undone. 6550 if (0 <= newCursorPos && newCursorPos <= text.length()) { 6551 Selection.setSelection(text, newCursorPos); 6552 } 6553 } 6554 6555 private String getTypeString() { 6556 switch (mType) { 6557 case TYPE_INSERT: 6558 return "insert"; 6559 case TYPE_DELETE: 6560 return "delete"; 6561 case TYPE_REPLACE: 6562 return "replace"; 6563 default: 6564 return ""; 6565 } 6566 } 6567 6568 @Override 6569 public String toString() { 6570 return "[mType=" + getTypeString() + ", " 6571 + "mOldText=" + mOldText + ", " 6572 + "mNewText=" + mNewText + ", " 6573 + "mStart=" + mStart + ", " 6574 + "mOldCursorPos=" + mOldCursorPos + ", " 6575 + "mNewCursorPos=" + mNewCursorPos + ", " 6576 + "mFrozen=" + mFrozen + ", " 6577 + "mIsComposition=" + mIsComposition + "]"; 6578 } 6579 6580 public static final Parcelable.ClassLoaderCreator<EditOperation> CREATOR = 6581 new Parcelable.ClassLoaderCreator<EditOperation>() { 6582 @Override 6583 public EditOperation createFromParcel(Parcel in) { 6584 return new EditOperation(in, null); 6585 } 6586 6587 @Override 6588 public EditOperation createFromParcel(Parcel in, ClassLoader loader) { 6589 return new EditOperation(in, loader); 6590 } 6591 6592 @Override 6593 public EditOperation[] newArray(int size) { 6594 return new EditOperation[size]; 6595 } 6596 }; 6597 } 6598 6599 /** 6600 * A helper for enabling and handling "PROCESS_TEXT" menu actions. 6601 * These allow external applications to plug into currently selected text. 6602 */ 6603 static final class ProcessTextIntentActionsHandler { 6604 6605 private final Editor mEditor; 6606 private final TextView mTextView; 6607 private final Context mContext; 6608 private final PackageManager mPackageManager; 6609 private final String mPackageName; 6610 private final SparseArray<Intent> mAccessibilityIntents = new SparseArray<>(); 6611 private final SparseArray<AccessibilityNodeInfo.AccessibilityAction> mAccessibilityActions = 6612 new SparseArray<>(); 6613 private final List<ResolveInfo> mSupportedActivities = new ArrayList<>(); 6614 6615 private ProcessTextIntentActionsHandler(Editor editor) { 6616 mEditor = Preconditions.checkNotNull(editor); 6617 mTextView = Preconditions.checkNotNull(mEditor.mTextView); 6618 mContext = Preconditions.checkNotNull(mTextView.getContext()); 6619 mPackageManager = Preconditions.checkNotNull(mContext.getPackageManager()); 6620 mPackageName = Preconditions.checkNotNull(mContext.getPackageName()); 6621 } 6622 6623 /** 6624 * Adds "PROCESS_TEXT" menu items to the specified menu. 6625 */ 6626 public void onInitializeMenu(Menu menu) { 6627 loadSupportedActivities(); 6628 final int size = mSupportedActivities.size(); 6629 for (int i = 0; i < size; i++) { 6630 final ResolveInfo resolveInfo = mSupportedActivities.get(i); 6631 menu.add(Menu.NONE, Menu.NONE, 6632 Editor.MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START + i, 6633 getLabel(resolveInfo)) 6634 .setIntent(createProcessTextIntentForResolveInfo(resolveInfo)) 6635 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 6636 } 6637 } 6638 6639 /** 6640 * Performs a "PROCESS_TEXT" action if there is one associated with the specified 6641 * menu item. 6642 * 6643 * @return True if the action was performed, false otherwise. 6644 */ 6645 public boolean performMenuItemAction(MenuItem item) { 6646 return fireIntent(item.getIntent()); 6647 } 6648 6649 /** 6650 * Initializes and caches "PROCESS_TEXT" accessibility actions. 6651 */ 6652 public void initializeAccessibilityActions() { 6653 mAccessibilityIntents.clear(); 6654 mAccessibilityActions.clear(); 6655 int i = 0; 6656 loadSupportedActivities(); 6657 for (ResolveInfo resolveInfo : mSupportedActivities) { 6658 int actionId = TextView.ACCESSIBILITY_ACTION_PROCESS_TEXT_START_ID + i++; 6659 mAccessibilityActions.put( 6660 actionId, 6661 new AccessibilityNodeInfo.AccessibilityAction( 6662 actionId, getLabel(resolveInfo))); 6663 mAccessibilityIntents.put( 6664 actionId, createProcessTextIntentForResolveInfo(resolveInfo)); 6665 } 6666 } 6667 6668 /** 6669 * Adds "PROCESS_TEXT" accessibility actions to the specified accessibility node info. 6670 * NOTE: This needs a prior call to {@link #initializeAccessibilityActions()} to make the 6671 * latest accessibility actions available for this call. 6672 */ 6673 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo nodeInfo) { 6674 for (int i = 0; i < mAccessibilityActions.size(); i++) { 6675 nodeInfo.addAction(mAccessibilityActions.valueAt(i)); 6676 } 6677 } 6678 6679 /** 6680 * Performs a "PROCESS_TEXT" action if there is one associated with the specified 6681 * accessibility action id. 6682 * 6683 * @return True if the action was performed, false otherwise. 6684 */ 6685 public boolean performAccessibilityAction(int actionId) { 6686 return fireIntent(mAccessibilityIntents.get(actionId)); 6687 } 6688 6689 private boolean fireIntent(Intent intent) { 6690 if (intent != null && Intent.ACTION_PROCESS_TEXT.equals(intent.getAction())) { 6691 String selectedText = mTextView.getSelectedText(); 6692 selectedText = TextUtils.trimToParcelableSize(selectedText); 6693 intent.putExtra(Intent.EXTRA_PROCESS_TEXT, selectedText); 6694 mEditor.mPreserveSelection = true; 6695 mTextView.startActivityForResult(intent, TextView.PROCESS_TEXT_REQUEST_CODE); 6696 return true; 6697 } 6698 return false; 6699 } 6700 6701 private void loadSupportedActivities() { 6702 mSupportedActivities.clear(); 6703 if (!mContext.canStartActivityForResult()) { 6704 return; 6705 } 6706 PackageManager packageManager = mTextView.getContext().getPackageManager(); 6707 List<ResolveInfo> unfiltered = 6708 packageManager.queryIntentActivities(createProcessTextIntent(), 0); 6709 for (ResolveInfo info : unfiltered) { 6710 if (isSupportedActivity(info)) { 6711 mSupportedActivities.add(info); 6712 } 6713 } 6714 } 6715 6716 private boolean isSupportedActivity(ResolveInfo info) { 6717 return mPackageName.equals(info.activityInfo.packageName) 6718 || info.activityInfo.exported 6719 && (info.activityInfo.permission == null 6720 || mContext.checkSelfPermission(info.activityInfo.permission) 6721 == PackageManager.PERMISSION_GRANTED); 6722 } 6723 6724 private Intent createProcessTextIntentForResolveInfo(ResolveInfo info) { 6725 return createProcessTextIntent() 6726 .putExtra(Intent.EXTRA_PROCESS_TEXT_READONLY, !mTextView.isTextEditable()) 6727 .setClassName(info.activityInfo.packageName, info.activityInfo.name); 6728 } 6729 6730 private Intent createProcessTextIntent() { 6731 return new Intent() 6732 .setAction(Intent.ACTION_PROCESS_TEXT) 6733 .setType("text/plain"); 6734 } 6735 6736 private CharSequence getLabel(ResolveInfo resolveInfo) { 6737 return resolveInfo.loadLabel(mPackageManager); 6738 } 6739 } 6740} 6741