Editor.java revision ce8db9911494225fcd99711d7df85a130de5a6ce
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.widget.AdapterView.OnItemClickListener; 111import android.widget.TextView.Drawables; 112import android.widget.TextView.OnEditorActionListener; 113 114import com.android.internal.annotations.VisibleForTesting; 115import com.android.internal.logging.MetricsLogger; 116import com.android.internal.logging.nano.MetricsProto.MetricsEvent; 117import com.android.internal.util.ArrayUtils; 118import com.android.internal.util.GrowingArrayUtils; 119import com.android.internal.util.Preconditions; 120import com.android.internal.widget.EditableInputConnection; 121 122import java.lang.annotation.Retention; 123import java.lang.annotation.RetentionPolicy; 124import java.text.BreakIterator; 125import java.util.ArrayList; 126import java.util.Arrays; 127import java.util.Comparator; 128import java.util.HashMap; 129import java.util.List; 130import java.util.Map; 131 132/** 133 * Helper class used by TextView to handle editable text views. 134 * 135 * @hide 136 */ 137public class Editor { 138 private static final String TAG = "Editor"; 139 private static final boolean DEBUG_UNDO = false; 140 // Specifies whether to use or not the magnifier when pressing the insertion or selection 141 // handles. 142 private static final boolean FLAG_USE_MAGNIFIER = true; 143 144 static final int BLINK = 500; 145 private static final int DRAG_SHADOW_MAX_TEXT_LENGTH = 20; 146 private static final float LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS = 0.5f; 147 private static final int UNSET_X_VALUE = -1; 148 private static final int UNSET_LINE = -1; 149 // Tag used when the Editor maintains its own separate UndoManager. 150 private static final String UNDO_OWNER_TAG = "Editor"; 151 152 // Ordering constants used to place the Action Mode or context menu items in their menu. 153 private static final int MENU_ITEM_ORDER_ASSIST = 0; 154 private static final int MENU_ITEM_ORDER_UNDO = 2; 155 private static final int MENU_ITEM_ORDER_REDO = 3; 156 private static final int MENU_ITEM_ORDER_CUT = 4; 157 private static final int MENU_ITEM_ORDER_COPY = 5; 158 private static final int MENU_ITEM_ORDER_PASTE = 6; 159 private static final int MENU_ITEM_ORDER_SHARE = 7; 160 private static final int MENU_ITEM_ORDER_SELECT_ALL = 8; 161 private static final int MENU_ITEM_ORDER_REPLACE = 9; 162 private static final int MENU_ITEM_ORDER_AUTOFILL = 10; 163 private static final int MENU_ITEM_ORDER_PASTE_AS_PLAIN_TEXT = 11; 164 private static final int MENU_ITEM_ORDER_SECONDARY_ASSIST_ACTIONS_START = 50; 165 private static final int MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START = 100; 166 167 @IntDef({MagnifierHandleTrigger.SELECTION_START, 168 MagnifierHandleTrigger.SELECTION_END, 169 MagnifierHandleTrigger.INSERTION}) 170 @Retention(RetentionPolicy.SOURCE) 171 private @interface MagnifierHandleTrigger { 172 int INSERTION = 0; 173 int SELECTION_START = 1; 174 int SELECTION_END = 2; 175 } 176 177 // Each Editor manages its own undo stack. 178 private final UndoManager mUndoManager = new UndoManager(); 179 private UndoOwner mUndoOwner = mUndoManager.getOwner(UNDO_OWNER_TAG, this); 180 final UndoInputFilter mUndoInputFilter = new UndoInputFilter(this); 181 boolean mAllowUndo = true; 182 183 private final MetricsLogger mMetricsLogger = new MetricsLogger(); 184 185 // Cursor Controllers. 186 private InsertionPointCursorController mInsertionPointCursorController; 187 SelectionModifierCursorController mSelectionModifierCursorController; 188 // Action mode used when text is selected or when actions on an insertion cursor are triggered. 189 private ActionMode mTextActionMode; 190 private boolean mInsertionControllerEnabled; 191 private boolean mSelectionControllerEnabled; 192 193 private final boolean mHapticTextHandleEnabled; 194 195 private final Magnifier mMagnifier; 196 private final Runnable mUpdateMagnifierRunnable = new Runnable() { 197 @Override 198 public void run() { 199 mMagnifier.update(); 200 } 201 }; 202 // Update the magnifier contents whenever anything in the view hierarchy is updated. 203 // Note: this only captures UI thread-visible changes, so it's a known issue that an animating 204 // VectorDrawable or Ripple animation will not trigger capture, since they're owned by 205 // RenderThread. 206 private final ViewTreeObserver.OnDrawListener mMagnifierOnDrawListener = 207 new ViewTreeObserver.OnDrawListener() { 208 @Override 209 public void onDraw() { 210 if (mMagnifier != null) { 211 // Posting the method will ensure that updating the magnifier contents will 212 // happen right after the rendering of the current frame. 213 mTextView.post(mUpdateMagnifierRunnable); 214 } 215 } 216 }; 217 218 // Used to highlight a word when it is corrected by the IME 219 private CorrectionHighlighter mCorrectionHighlighter; 220 221 InputContentType mInputContentType; 222 InputMethodState mInputMethodState; 223 224 private static class TextRenderNode { 225 // Render node has 3 recording states: 226 // 1. Recorded operations are valid. 227 // #needsRecord() returns false, but needsToBeShifted is false. 228 // 2. Recorded operations are not valid, but just the position needed to be updated. 229 // #needsRecord() returns false, but needsToBeShifted is true. 230 // 3. Recorded operations are not valid. Need to record operations. #needsRecord() returns 231 // true. 232 RenderNode renderNode; 233 boolean isDirty; 234 // Becomes true when recorded operations can be reused, but the position has to be updated. 235 boolean needsToBeShifted; 236 public TextRenderNode(String name) { 237 renderNode = RenderNode.create(name, null); 238 isDirty = true; 239 needsToBeShifted = true; 240 } 241 boolean needsRecord() { 242 return isDirty || !renderNode.isValid(); 243 } 244 } 245 private TextRenderNode[] mTextRenderNodes; 246 247 boolean mFrozenWithFocus; 248 boolean mSelectionMoved; 249 boolean mTouchFocusSelected; 250 251 KeyListener mKeyListener; 252 int mInputType = EditorInfo.TYPE_NULL; 253 254 boolean mDiscardNextActionUp; 255 boolean mIgnoreActionUpEvent; 256 257 long mShowCursor; 258 private Blink mBlink; 259 260 boolean mCursorVisible = true; 261 boolean mSelectAllOnFocus; 262 boolean mTextIsSelectable; 263 264 CharSequence mError; 265 boolean mErrorWasChanged; 266 private ErrorPopup mErrorPopup; 267 268 /** 269 * This flag is set if the TextView tries to display an error before it 270 * is attached to the window (so its position is still unknown). 271 * It causes the error to be shown later, when onAttachedToWindow() 272 * is called. 273 */ 274 private boolean mShowErrorAfterAttach; 275 276 boolean mInBatchEditControllers; 277 boolean mShowSoftInputOnFocus = true; 278 private boolean mPreserveSelection; 279 private boolean mRestartActionModeOnNextRefresh; 280 281 private SelectionActionModeHelper mSelectionActionModeHelper; 282 283 boolean mIsBeingLongClicked; 284 285 private SuggestionsPopupWindow mSuggestionsPopupWindow; 286 SuggestionRangeSpan mSuggestionRangeSpan; 287 private Runnable mShowSuggestionRunnable; 288 289 Drawable mDrawableForCursor = null; 290 291 private Drawable mSelectHandleLeft; 292 private Drawable mSelectHandleRight; 293 private Drawable mSelectHandleCenter; 294 295 // Global listener that detects changes in the global position of the TextView 296 private PositionListener mPositionListener; 297 298 private float mLastDownPositionX, mLastDownPositionY; 299 private float mLastUpPositionX, mLastUpPositionY; 300 private float mContextMenuAnchorX, mContextMenuAnchorY; 301 Callback mCustomSelectionActionModeCallback; 302 Callback mCustomInsertionActionModeCallback; 303 304 // Set when this TextView gained focus with some text selected. Will start selection mode. 305 boolean mCreatedWithASelection; 306 307 // Indicates the current tap state (first tap, double tap, or triple click). 308 private int mTapState = TAP_STATE_INITIAL; 309 private long mLastTouchUpTime = 0; 310 private static final int TAP_STATE_INITIAL = 0; 311 private static final int TAP_STATE_FIRST_TAP = 1; 312 private static final int TAP_STATE_DOUBLE_TAP = 2; 313 // Only for mouse input. 314 private static final int TAP_STATE_TRIPLE_CLICK = 3; 315 316 // The button state as of the last time #onTouchEvent is called. 317 private int mLastButtonState; 318 319 private Runnable mInsertionActionModeRunnable; 320 321 // The span controller helps monitoring the changes to which the Editor needs to react: 322 // - EasyEditSpans, for which we have some UI to display on attach and on hide 323 // - SelectionSpans, for which we need to call updateSelection if an IME is attached 324 private SpanController mSpanController; 325 326 private WordIterator mWordIterator; 327 SpellChecker mSpellChecker; 328 329 // This word iterator is set with text and used to determine word boundaries 330 // when a user is selecting text. 331 private WordIterator mWordIteratorWithText; 332 // Indicate that the text in the word iterator needs to be updated. 333 private boolean mUpdateWordIteratorText; 334 335 private Rect mTempRect; 336 337 private final TextView mTextView; 338 339 final ProcessTextIntentActionsHandler mProcessTextIntentActionsHandler; 340 341 private final CursorAnchorInfoNotifier mCursorAnchorInfoNotifier = 342 new CursorAnchorInfoNotifier(); 343 344 private final Runnable mShowFloatingToolbar = new Runnable() { 345 @Override 346 public void run() { 347 if (mTextActionMode != null) { 348 mTextActionMode.hide(0); // hide off. 349 } 350 } 351 }; 352 353 boolean mIsInsertionActionModeStartPending = false; 354 355 private final SuggestionHelper mSuggestionHelper = new SuggestionHelper(); 356 357 Editor(TextView textView) { 358 mTextView = textView; 359 // Synchronize the filter list, which places the undo input filter at the end. 360 mTextView.setFilters(mTextView.getFilters()); 361 mProcessTextIntentActionsHandler = new ProcessTextIntentActionsHandler(this); 362 mHapticTextHandleEnabled = mTextView.getContext().getResources().getBoolean( 363 com.android.internal.R.bool.config_enableHapticTextHandle); 364 365 mMagnifier = FLAG_USE_MAGNIFIER ? new Magnifier(mTextView) : null; 366 } 367 368 ParcelableParcel saveInstanceState() { 369 ParcelableParcel state = new ParcelableParcel(getClass().getClassLoader()); 370 Parcel parcel = state.getParcel(); 371 mUndoManager.saveInstanceState(parcel); 372 mUndoInputFilter.saveInstanceState(parcel); 373 return state; 374 } 375 376 void restoreInstanceState(ParcelableParcel state) { 377 Parcel parcel = state.getParcel(); 378 mUndoManager.restoreInstanceState(parcel, state.getClassLoader()); 379 mUndoInputFilter.restoreInstanceState(parcel); 380 // Re-associate this object as the owner of undo state. 381 mUndoOwner = mUndoManager.getOwner(UNDO_OWNER_TAG, this); 382 } 383 384 /** 385 * Forgets all undo and redo operations for this Editor. 386 */ 387 void forgetUndoRedo() { 388 UndoOwner[] owners = { mUndoOwner }; 389 mUndoManager.forgetUndos(owners, -1 /* all */); 390 mUndoManager.forgetRedos(owners, -1 /* all */); 391 } 392 393 boolean canUndo() { 394 UndoOwner[] owners = { mUndoOwner }; 395 return mAllowUndo && mUndoManager.countUndos(owners) > 0; 396 } 397 398 boolean canRedo() { 399 UndoOwner[] owners = { mUndoOwner }; 400 return mAllowUndo && mUndoManager.countRedos(owners) > 0; 401 } 402 403 void undo() { 404 if (!mAllowUndo) { 405 return; 406 } 407 UndoOwner[] owners = { mUndoOwner }; 408 mUndoManager.undo(owners, 1); // Undo 1 action. 409 } 410 411 void redo() { 412 if (!mAllowUndo) { 413 return; 414 } 415 UndoOwner[] owners = { mUndoOwner }; 416 mUndoManager.redo(owners, 1); // Redo 1 action. 417 } 418 419 void replace() { 420 if (mSuggestionsPopupWindow == null) { 421 mSuggestionsPopupWindow = new SuggestionsPopupWindow(); 422 } 423 hideCursorAndSpanControllers(); 424 mSuggestionsPopupWindow.show(); 425 426 int middle = (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; 427 Selection.setSelection((Spannable) mTextView.getText(), middle); 428 } 429 430 void onAttachedToWindow() { 431 if (mShowErrorAfterAttach) { 432 showError(); 433 mShowErrorAfterAttach = false; 434 } 435 436 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 437 if (observer.isAlive()) { 438 // No need to create the controller. 439 // The get method will add the listener on controller creation. 440 if (mInsertionPointCursorController != null) { 441 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 442 } 443 if (mSelectionModifierCursorController != null) { 444 mSelectionModifierCursorController.resetTouchOffsets(); 445 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 446 } 447 if (FLAG_USE_MAGNIFIER) { 448 observer.addOnDrawListener(mMagnifierOnDrawListener); 449 } 450 } 451 452 updateSpellCheckSpans(0, mTextView.getText().length(), 453 true /* create the spell checker if needed */); 454 455 if (mTextView.hasSelection()) { 456 refreshTextActionMode(); 457 } 458 459 getPositionListener().addSubscriber(mCursorAnchorInfoNotifier, true); 460 resumeBlink(); 461 } 462 463 void onDetachedFromWindow() { 464 getPositionListener().removeSubscriber(mCursorAnchorInfoNotifier); 465 466 if (mError != null) { 467 hideError(); 468 } 469 470 suspendBlink(); 471 472 if (mInsertionPointCursorController != null) { 473 mInsertionPointCursorController.onDetached(); 474 } 475 476 if (mSelectionModifierCursorController != null) { 477 mSelectionModifierCursorController.onDetached(); 478 } 479 480 if (mShowSuggestionRunnable != null) { 481 mTextView.removeCallbacks(mShowSuggestionRunnable); 482 } 483 484 // Cancel the single tap delayed runnable. 485 if (mInsertionActionModeRunnable != null) { 486 mTextView.removeCallbacks(mInsertionActionModeRunnable); 487 } 488 489 mTextView.removeCallbacks(mShowFloatingToolbar); 490 491 discardTextDisplayLists(); 492 493 if (mSpellChecker != null) { 494 mSpellChecker.closeSession(); 495 // Forces the creation of a new SpellChecker next time this window is created. 496 // Will handle the cases where the settings has been changed in the meantime. 497 mSpellChecker = null; 498 } 499 500 if (FLAG_USE_MAGNIFIER) { 501 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 502 if (observer.isAlive()) { 503 observer.removeOnDrawListener(mMagnifierOnDrawListener); 504 } 505 } 506 507 hideCursorAndSpanControllers(); 508 stopTextActionModeWithPreservingSelection(); 509 } 510 511 private void discardTextDisplayLists() { 512 if (mTextRenderNodes != null) { 513 for (int i = 0; i < mTextRenderNodes.length; i++) { 514 RenderNode displayList = mTextRenderNodes[i] != null 515 ? mTextRenderNodes[i].renderNode : null; 516 if (displayList != null && displayList.isValid()) { 517 displayList.discardDisplayList(); 518 } 519 } 520 } 521 } 522 523 private void showError() { 524 if (mTextView.getWindowToken() == null) { 525 mShowErrorAfterAttach = true; 526 return; 527 } 528 529 if (mErrorPopup == null) { 530 LayoutInflater inflater = LayoutInflater.from(mTextView.getContext()); 531 final TextView err = (TextView) inflater.inflate( 532 com.android.internal.R.layout.textview_hint, null); 533 534 final float scale = mTextView.getResources().getDisplayMetrics().density; 535 mErrorPopup = 536 new ErrorPopup(err, (int) (200 * scale + 0.5f), (int) (50 * scale + 0.5f)); 537 mErrorPopup.setFocusable(false); 538 // The user is entering text, so the input method is needed. We 539 // don't want the popup to be displayed on top of it. 540 mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); 541 } 542 543 TextView tv = (TextView) mErrorPopup.getContentView(); 544 chooseSize(mErrorPopup, mError, tv); 545 tv.setText(mError); 546 547 mErrorPopup.showAsDropDown(mTextView, getErrorX(), getErrorY(), 548 Gravity.TOP | Gravity.LEFT); 549 mErrorPopup.fixDirection(mErrorPopup.isAboveAnchor()); 550 } 551 552 public void setError(CharSequence error, Drawable icon) { 553 mError = TextUtils.stringOrSpannedString(error); 554 mErrorWasChanged = true; 555 556 if (mError == null) { 557 setErrorIcon(null); 558 if (mErrorPopup != null) { 559 if (mErrorPopup.isShowing()) { 560 mErrorPopup.dismiss(); 561 } 562 563 mErrorPopup = null; 564 } 565 mShowErrorAfterAttach = false; 566 } else { 567 setErrorIcon(icon); 568 if (mTextView.isFocused()) { 569 showError(); 570 } 571 } 572 } 573 574 private void setErrorIcon(Drawable icon) { 575 Drawables dr = mTextView.mDrawables; 576 if (dr == null) { 577 mTextView.mDrawables = dr = new Drawables(mTextView.getContext()); 578 } 579 dr.setErrorDrawable(icon, mTextView); 580 581 mTextView.resetResolvedDrawables(); 582 mTextView.invalidate(); 583 mTextView.requestLayout(); 584 } 585 586 private void hideError() { 587 if (mErrorPopup != null) { 588 if (mErrorPopup.isShowing()) { 589 mErrorPopup.dismiss(); 590 } 591 } 592 593 mShowErrorAfterAttach = false; 594 } 595 596 /** 597 * Returns the X offset to make the pointy top of the error point 598 * at the middle of the error icon. 599 */ 600 private int getErrorX() { 601 /* 602 * The "25" is the distance between the point and the right edge 603 * of the background 604 */ 605 final float scale = mTextView.getResources().getDisplayMetrics().density; 606 607 final Drawables dr = mTextView.mDrawables; 608 609 final int layoutDirection = mTextView.getLayoutDirection(); 610 int errorX; 611 int offset; 612 switch (layoutDirection) { 613 default: 614 case View.LAYOUT_DIRECTION_LTR: 615 offset = -(dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f); 616 errorX = mTextView.getWidth() - mErrorPopup.getWidth() 617 - mTextView.getPaddingRight() + offset; 618 break; 619 case View.LAYOUT_DIRECTION_RTL: 620 offset = (dr != null ? dr.mDrawableSizeLeft : 0) / 2 - (int) (25 * scale + 0.5f); 621 errorX = mTextView.getPaddingLeft() + offset; 622 break; 623 } 624 return errorX; 625 } 626 627 /** 628 * Returns the Y offset to make the pointy top of the error point 629 * at the bottom of the error icon. 630 */ 631 private int getErrorY() { 632 /* 633 * Compound, not extended, because the icon is not clipped 634 * if the text height is smaller. 635 */ 636 final int compoundPaddingTop = mTextView.getCompoundPaddingTop(); 637 int vspace = mTextView.getBottom() - mTextView.getTop() 638 - mTextView.getCompoundPaddingBottom() - compoundPaddingTop; 639 640 final Drawables dr = mTextView.mDrawables; 641 642 final int layoutDirection = mTextView.getLayoutDirection(); 643 int height; 644 switch (layoutDirection) { 645 default: 646 case View.LAYOUT_DIRECTION_LTR: 647 height = (dr != null ? dr.mDrawableHeightRight : 0); 648 break; 649 case View.LAYOUT_DIRECTION_RTL: 650 height = (dr != null ? dr.mDrawableHeightLeft : 0); 651 break; 652 } 653 654 int icontop = compoundPaddingTop + (vspace - height) / 2; 655 656 /* 657 * The "2" is the distance between the point and the top edge 658 * of the background. 659 */ 660 final float scale = mTextView.getResources().getDisplayMetrics().density; 661 return icontop + height - mTextView.getHeight() - (int) (2 * scale + 0.5f); 662 } 663 664 void createInputContentTypeIfNeeded() { 665 if (mInputContentType == null) { 666 mInputContentType = new InputContentType(); 667 } 668 } 669 670 void createInputMethodStateIfNeeded() { 671 if (mInputMethodState == null) { 672 mInputMethodState = new InputMethodState(); 673 } 674 } 675 676 boolean isCursorVisible() { 677 // The default value is true, even when there is no associated Editor 678 return mCursorVisible && mTextView.isTextEditable(); 679 } 680 681 void prepareCursorControllers() { 682 boolean windowSupportsHandles = false; 683 684 ViewGroup.LayoutParams params = mTextView.getRootView().getLayoutParams(); 685 if (params instanceof WindowManager.LayoutParams) { 686 WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params; 687 windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW 688 || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW; 689 } 690 691 boolean enabled = windowSupportsHandles && mTextView.getLayout() != null; 692 mInsertionControllerEnabled = enabled && isCursorVisible(); 693 mSelectionControllerEnabled = enabled && mTextView.textCanBeSelected(); 694 695 if (!mInsertionControllerEnabled) { 696 hideInsertionPointCursorController(); 697 if (mInsertionPointCursorController != null) { 698 mInsertionPointCursorController.onDetached(); 699 mInsertionPointCursorController = null; 700 } 701 } 702 703 if (!mSelectionControllerEnabled) { 704 stopTextActionMode(); 705 if (mSelectionModifierCursorController != null) { 706 mSelectionModifierCursorController.onDetached(); 707 mSelectionModifierCursorController = null; 708 } 709 } 710 } 711 712 void hideInsertionPointCursorController() { 713 if (mInsertionPointCursorController != null) { 714 mInsertionPointCursorController.hide(); 715 } 716 } 717 718 /** 719 * Hides the insertion and span controllers. 720 */ 721 void hideCursorAndSpanControllers() { 722 hideCursorControllers(); 723 hideSpanControllers(); 724 } 725 726 private void hideSpanControllers() { 727 if (mSpanController != null) { 728 mSpanController.hide(); 729 } 730 } 731 732 private void hideCursorControllers() { 733 // When mTextView is not ExtractEditText, we need to distinguish two kinds of focus-lost. 734 // One is the true focus lost where suggestions pop-up (if any) should be dismissed, and the 735 // other is an side effect of showing the suggestions pop-up itself. We use isShowingUp() 736 // to distinguish one from the other. 737 if (mSuggestionsPopupWindow != null && ((mTextView.isInExtractedMode()) 738 || !mSuggestionsPopupWindow.isShowingUp())) { 739 // Should be done before hide insertion point controller since it triggers a show of it 740 mSuggestionsPopupWindow.hide(); 741 } 742 hideInsertionPointCursorController(); 743 } 744 745 /** 746 * Create new SpellCheckSpans on the modified region. 747 */ 748 private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) { 749 // Remove spans whose adjacent characters are text not punctuation 750 mTextView.removeAdjacentSuggestionSpans(start); 751 mTextView.removeAdjacentSuggestionSpans(end); 752 753 if (mTextView.isTextEditable() && mTextView.isSuggestionsEnabled() 754 && !(mTextView.isInExtractedMode())) { 755 if (mSpellChecker == null && createSpellChecker) { 756 mSpellChecker = new SpellChecker(mTextView); 757 } 758 if (mSpellChecker != null) { 759 mSpellChecker.spellCheck(start, end); 760 } 761 } 762 } 763 764 void onScreenStateChanged(int screenState) { 765 switch (screenState) { 766 case View.SCREEN_STATE_ON: 767 resumeBlink(); 768 break; 769 case View.SCREEN_STATE_OFF: 770 suspendBlink(); 771 break; 772 } 773 } 774 775 private void suspendBlink() { 776 if (mBlink != null) { 777 mBlink.cancel(); 778 } 779 } 780 781 private void resumeBlink() { 782 if (mBlink != null) { 783 mBlink.uncancel(); 784 makeBlink(); 785 } 786 } 787 788 void adjustInputType(boolean password, boolean passwordInputType, 789 boolean webPasswordInputType, boolean numberPasswordInputType) { 790 // mInputType has been set from inputType, possibly modified by mInputMethod. 791 // Specialize mInputType to [web]password if we have a text class and the original input 792 // type was a password. 793 if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { 794 if (password || passwordInputType) { 795 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 796 | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD; 797 } 798 if (webPasswordInputType) { 799 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 800 | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 801 } 802 } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) { 803 if (numberPasswordInputType) { 804 mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) 805 | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD; 806 } 807 } 808 } 809 810 private void chooseSize(@NonNull PopupWindow pop, @NonNull CharSequence text, 811 @NonNull TextView tv) { 812 final int wid = tv.getPaddingLeft() + tv.getPaddingRight(); 813 final int ht = tv.getPaddingTop() + tv.getPaddingBottom(); 814 815 final int defaultWidthInPixels = mTextView.getResources().getDimensionPixelSize( 816 com.android.internal.R.dimen.textview_error_popup_default_width); 817 final StaticLayout l = StaticLayout.Builder.obtain(text, 0, text.length(), tv.getPaint(), 818 defaultWidthInPixels) 819 .setUseLineSpacingFromFallbacks(tv.mUseFallbackLineSpacing) 820 .build(); 821 822 float max = 0; 823 for (int i = 0; i < l.getLineCount(); i++) { 824 max = Math.max(max, l.getLineWidth(i)); 825 } 826 827 /* 828 * Now set the popup size to be big enough for the text plus the border capped 829 * to DEFAULT_MAX_POPUP_WIDTH 830 */ 831 pop.setWidth(wid + (int) Math.ceil(max)); 832 pop.setHeight(ht + l.getHeight()); 833 } 834 835 void setFrame() { 836 if (mErrorPopup != null) { 837 TextView tv = (TextView) mErrorPopup.getContentView(); 838 chooseSize(mErrorPopup, mError, tv); 839 mErrorPopup.update(mTextView, getErrorX(), getErrorY(), 840 mErrorPopup.getWidth(), mErrorPopup.getHeight()); 841 } 842 } 843 844 private int getWordStart(int offset) { 845 // FIXME - For this and similar methods we're not doing anything to check if there's 846 // a LocaleSpan in the text, this may be something we should try handling or checking for. 847 int retOffset = getWordIteratorWithText().prevBoundary(offset); 848 if (getWordIteratorWithText().isOnPunctuation(retOffset)) { 849 // On punctuation boundary or within group of punctuation, find punctuation start. 850 retOffset = getWordIteratorWithText().getPunctuationBeginning(offset); 851 } else { 852 // Not on a punctuation boundary, find the word start. 853 retOffset = getWordIteratorWithText().getPrevWordBeginningOnTwoWordsBoundary(offset); 854 } 855 if (retOffset == BreakIterator.DONE) { 856 return offset; 857 } 858 return retOffset; 859 } 860 861 private int getWordEnd(int offset) { 862 int retOffset = getWordIteratorWithText().nextBoundary(offset); 863 if (getWordIteratorWithText().isAfterPunctuation(retOffset)) { 864 // On punctuation boundary or within group of punctuation, find punctuation end. 865 retOffset = getWordIteratorWithText().getPunctuationEnd(offset); 866 } else { 867 // Not on a punctuation boundary, find the word end. 868 retOffset = getWordIteratorWithText().getNextWordEndOnTwoWordBoundary(offset); 869 } 870 if (retOffset == BreakIterator.DONE) { 871 return offset; 872 } 873 return retOffset; 874 } 875 876 private boolean needsToSelectAllToSelectWordOrParagraph() { 877 if (mTextView.hasPasswordTransformationMethod()) { 878 // Always select all on a password field. 879 // Cut/copy menu entries are not available for passwords, but being able to select all 880 // is however useful to delete or paste to replace the entire content. 881 return true; 882 } 883 884 int inputType = mTextView.getInputType(); 885 int klass = inputType & InputType.TYPE_MASK_CLASS; 886 int variation = inputType & InputType.TYPE_MASK_VARIATION; 887 888 // Specific text field types: select the entire text for these 889 if (klass == InputType.TYPE_CLASS_NUMBER 890 || klass == InputType.TYPE_CLASS_PHONE 891 || klass == InputType.TYPE_CLASS_DATETIME 892 || variation == InputType.TYPE_TEXT_VARIATION_URI 893 || variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS 894 || variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS 895 || variation == InputType.TYPE_TEXT_VARIATION_FILTER) { 896 return true; 897 } 898 return false; 899 } 900 901 /** 902 * Adjusts selection to the word under last touch offset. Return true if the operation was 903 * successfully performed. 904 */ 905 boolean selectCurrentWord() { 906 if (!mTextView.canSelectText()) { 907 return false; 908 } 909 910 if (needsToSelectAllToSelectWordOrParagraph()) { 911 return mTextView.selectAllText(); 912 } 913 914 long lastTouchOffsets = getLastTouchOffsets(); 915 final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 916 final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 917 918 // Safety check in case standard touch event handling has been bypassed 919 if (minOffset < 0 || minOffset > mTextView.getText().length()) return false; 920 if (maxOffset < 0 || maxOffset > mTextView.getText().length()) return false; 921 922 int selectionStart, selectionEnd; 923 924 // If a URLSpan (web address, email, phone...) is found at that position, select it. 925 URLSpan[] urlSpans = 926 ((Spanned) mTextView.getText()).getSpans(minOffset, maxOffset, URLSpan.class); 927 if (urlSpans.length >= 1) { 928 URLSpan urlSpan = urlSpans[0]; 929 selectionStart = ((Spanned) mTextView.getText()).getSpanStart(urlSpan); 930 selectionEnd = ((Spanned) mTextView.getText()).getSpanEnd(urlSpan); 931 } else { 932 // FIXME - We should check if there's a LocaleSpan in the text, this may be 933 // something we should try handling or checking for. 934 final WordIterator wordIterator = getWordIterator(); 935 wordIterator.setCharSequence(mTextView.getText(), minOffset, maxOffset); 936 937 selectionStart = wordIterator.getBeginning(minOffset); 938 selectionEnd = wordIterator.getEnd(maxOffset); 939 940 if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE 941 || selectionStart == selectionEnd) { 942 // Possible when the word iterator does not properly handle the text's language 943 long range = getCharClusterRange(minOffset); 944 selectionStart = TextUtils.unpackRangeStartFromLong(range); 945 selectionEnd = TextUtils.unpackRangeEndFromLong(range); 946 } 947 } 948 949 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 950 return selectionEnd > selectionStart; 951 } 952 953 /** 954 * Adjusts selection to the paragraph under last touch offset. Return true if the operation was 955 * successfully performed. 956 */ 957 private boolean selectCurrentParagraph() { 958 if (!mTextView.canSelectText()) { 959 return false; 960 } 961 962 if (needsToSelectAllToSelectWordOrParagraph()) { 963 return mTextView.selectAllText(); 964 } 965 966 long lastTouchOffsets = getLastTouchOffsets(); 967 final int minLastTouchOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); 968 final int maxLastTouchOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); 969 970 final long paragraphsRange = getParagraphsRange(minLastTouchOffset, maxLastTouchOffset); 971 final int start = TextUtils.unpackRangeStartFromLong(paragraphsRange); 972 final int end = TextUtils.unpackRangeEndFromLong(paragraphsRange); 973 if (start < end) { 974 Selection.setSelection((Spannable) mTextView.getText(), start, end); 975 return true; 976 } 977 return false; 978 } 979 980 /** 981 * Get the minimum range of paragraphs that contains startOffset and endOffset. 982 */ 983 private long getParagraphsRange(int startOffset, int endOffset) { 984 final Layout layout = mTextView.getLayout(); 985 if (layout == null) { 986 return TextUtils.packRangeInLong(-1, -1); 987 } 988 final CharSequence text = mTextView.getText(); 989 int minLine = layout.getLineForOffset(startOffset); 990 // Search paragraph start. 991 while (minLine > 0) { 992 final int prevLineEndOffset = layout.getLineEnd(minLine - 1); 993 if (text.charAt(prevLineEndOffset - 1) == '\n') { 994 break; 995 } 996 minLine--; 997 } 998 int maxLine = layout.getLineForOffset(endOffset); 999 // Search paragraph end. 1000 while (maxLine < layout.getLineCount() - 1) { 1001 final int lineEndOffset = layout.getLineEnd(maxLine); 1002 if (text.charAt(lineEndOffset - 1) == '\n') { 1003 break; 1004 } 1005 maxLine++; 1006 } 1007 return TextUtils.packRangeInLong(layout.getLineStart(minLine), layout.getLineEnd(maxLine)); 1008 } 1009 1010 void onLocaleChanged() { 1011 // Will be re-created on demand in getWordIterator and getWordIteratorWithText with the 1012 // proper new locale 1013 mWordIterator = null; 1014 mWordIteratorWithText = null; 1015 } 1016 1017 public WordIterator getWordIterator() { 1018 if (mWordIterator == null) { 1019 mWordIterator = new WordIterator(mTextView.getTextServicesLocale()); 1020 } 1021 return mWordIterator; 1022 } 1023 1024 private WordIterator getWordIteratorWithText() { 1025 if (mWordIteratorWithText == null) { 1026 mWordIteratorWithText = new WordIterator(mTextView.getTextServicesLocale()); 1027 mUpdateWordIteratorText = true; 1028 } 1029 if (mUpdateWordIteratorText) { 1030 // FIXME - Shouldn't copy all of the text as only the area of the text relevant 1031 // to the user's selection is needed. A possible solution would be to 1032 // copy some number N of characters near the selection and then when the 1033 // user approaches N then we'd do another copy of the next N characters. 1034 CharSequence text = mTextView.getText(); 1035 mWordIteratorWithText.setCharSequence(text, 0, text.length()); 1036 mUpdateWordIteratorText = false; 1037 } 1038 return mWordIteratorWithText; 1039 } 1040 1041 private int getNextCursorOffset(int offset, boolean findAfterGivenOffset) { 1042 final Layout layout = mTextView.getLayout(); 1043 if (layout == null) return offset; 1044 return findAfterGivenOffset == layout.isRtlCharAt(offset) 1045 ? layout.getOffsetToLeftOf(offset) : layout.getOffsetToRightOf(offset); 1046 } 1047 1048 private long getCharClusterRange(int offset) { 1049 final int textLength = mTextView.getText().length(); 1050 if (offset < textLength) { 1051 final int clusterEndOffset = getNextCursorOffset(offset, true); 1052 return TextUtils.packRangeInLong( 1053 getNextCursorOffset(clusterEndOffset, false), clusterEndOffset); 1054 } 1055 if (offset - 1 >= 0) { 1056 final int clusterStartOffset = getNextCursorOffset(offset, false); 1057 return TextUtils.packRangeInLong(clusterStartOffset, 1058 getNextCursorOffset(clusterStartOffset, true)); 1059 } 1060 return TextUtils.packRangeInLong(offset, offset); 1061 } 1062 1063 private boolean touchPositionIsInSelection() { 1064 int selectionStart = mTextView.getSelectionStart(); 1065 int selectionEnd = mTextView.getSelectionEnd(); 1066 1067 if (selectionStart == selectionEnd) { 1068 return false; 1069 } 1070 1071 if (selectionStart > selectionEnd) { 1072 int tmp = selectionStart; 1073 selectionStart = selectionEnd; 1074 selectionEnd = tmp; 1075 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 1076 } 1077 1078 SelectionModifierCursorController selectionController = getSelectionController(); 1079 int minOffset = selectionController.getMinTouchOffset(); 1080 int maxOffset = selectionController.getMaxTouchOffset(); 1081 1082 return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); 1083 } 1084 1085 private PositionListener getPositionListener() { 1086 if (mPositionListener == null) { 1087 mPositionListener = new PositionListener(); 1088 } 1089 return mPositionListener; 1090 } 1091 1092 private interface TextViewPositionListener { 1093 public void updatePosition(int parentPositionX, int parentPositionY, 1094 boolean parentPositionChanged, boolean parentScrolled); 1095 } 1096 1097 private boolean isOffsetVisible(int offset) { 1098 Layout layout = mTextView.getLayout(); 1099 if (layout == null) return false; 1100 1101 final int line = layout.getLineForOffset(offset); 1102 final int lineBottom = layout.getLineBottom(line); 1103 final int primaryHorizontal = (int) layout.getPrimaryHorizontal(offset); 1104 return mTextView.isPositionVisible( 1105 primaryHorizontal + mTextView.viewportToContentHorizontalOffset(), 1106 lineBottom + mTextView.viewportToContentVerticalOffset()); 1107 } 1108 1109 /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed 1110 * in the view. Returns false when the position is in the empty space of left/right of text. 1111 */ 1112 private boolean isPositionOnText(float x, float y) { 1113 Layout layout = mTextView.getLayout(); 1114 if (layout == null) return false; 1115 1116 final int line = mTextView.getLineAtCoordinate(y); 1117 x = mTextView.convertToLocalHorizontalCoordinate(x); 1118 1119 if (x < layout.getLineLeft(line)) return false; 1120 if (x > layout.getLineRight(line)) return false; 1121 return true; 1122 } 1123 1124 private void startDragAndDrop() { 1125 getSelectionActionModeHelper().onSelectionDrag(); 1126 1127 // TODO: Fix drag and drop in full screen extracted mode. 1128 if (mTextView.isInExtractedMode()) { 1129 return; 1130 } 1131 final int start = mTextView.getSelectionStart(); 1132 final int end = mTextView.getSelectionEnd(); 1133 CharSequence selectedText = mTextView.getTransformedText(start, end); 1134 ClipData data = ClipData.newPlainText(null, selectedText); 1135 DragLocalState localState = new DragLocalState(mTextView, start, end); 1136 mTextView.startDragAndDrop(data, getTextThumbnailBuilder(start, end), localState, 1137 View.DRAG_FLAG_GLOBAL); 1138 stopTextActionMode(); 1139 if (hasSelectionController()) { 1140 getSelectionController().resetTouchOffsets(); 1141 } 1142 } 1143 1144 public boolean performLongClick(boolean handled) { 1145 // Long press in empty space moves cursor and starts the insertion action mode. 1146 if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) 1147 && mInsertionControllerEnabled) { 1148 final int offset = mTextView.getOffsetForPosition(mLastDownPositionX, 1149 mLastDownPositionY); 1150 Selection.setSelection((Spannable) mTextView.getText(), offset); 1151 getInsertionController().show(); 1152 mIsInsertionActionModeStartPending = true; 1153 handled = true; 1154 MetricsLogger.action( 1155 mTextView.getContext(), 1156 MetricsEvent.TEXT_LONGPRESS, 1157 TextViewMetrics.SUBTYPE_LONG_PRESS_OTHER); 1158 } 1159 1160 if (!handled && mTextActionMode != null) { 1161 if (touchPositionIsInSelection()) { 1162 startDragAndDrop(); 1163 MetricsLogger.action( 1164 mTextView.getContext(), 1165 MetricsEvent.TEXT_LONGPRESS, 1166 TextViewMetrics.SUBTYPE_LONG_PRESS_DRAG_AND_DROP); 1167 } else { 1168 stopTextActionMode(); 1169 selectCurrentWordAndStartDrag(); 1170 MetricsLogger.action( 1171 mTextView.getContext(), 1172 MetricsEvent.TEXT_LONGPRESS, 1173 TextViewMetrics.SUBTYPE_LONG_PRESS_SELECTION); 1174 } 1175 handled = true; 1176 } 1177 1178 // Start a new selection 1179 if (!handled) { 1180 handled = selectCurrentWordAndStartDrag(); 1181 if (handled) { 1182 MetricsLogger.action( 1183 mTextView.getContext(), 1184 MetricsEvent.TEXT_LONGPRESS, 1185 TextViewMetrics.SUBTYPE_LONG_PRESS_SELECTION); 1186 } 1187 } 1188 1189 return handled; 1190 } 1191 1192 float getLastUpPositionX() { 1193 return mLastUpPositionX; 1194 } 1195 1196 float getLastUpPositionY() { 1197 return mLastUpPositionY; 1198 } 1199 1200 private long getLastTouchOffsets() { 1201 SelectionModifierCursorController selectionController = getSelectionController(); 1202 final int minOffset = selectionController.getMinTouchOffset(); 1203 final int maxOffset = selectionController.getMaxTouchOffset(); 1204 return TextUtils.packRangeInLong(minOffset, maxOffset); 1205 } 1206 1207 void onFocusChanged(boolean focused, int direction) { 1208 mShowCursor = SystemClock.uptimeMillis(); 1209 ensureEndedBatchEdit(); 1210 1211 if (focused) { 1212 int selStart = mTextView.getSelectionStart(); 1213 int selEnd = mTextView.getSelectionEnd(); 1214 1215 // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection 1216 // mode for these, unless there was a specific selection already started. 1217 final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 1218 && selEnd == mTextView.getText().length(); 1219 1220 mCreatedWithASelection = mFrozenWithFocus && mTextView.hasSelection() 1221 && !isFocusHighlighted; 1222 1223 if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { 1224 // If a tap was used to give focus to that view, move cursor at tap position. 1225 // Has to be done before onTakeFocus, which can be overloaded. 1226 final int lastTapPosition = getLastTapPosition(); 1227 if (lastTapPosition >= 0) { 1228 Selection.setSelection((Spannable) mTextView.getText(), lastTapPosition); 1229 } 1230 1231 // Note this may have to be moved out of the Editor class 1232 MovementMethod mMovement = mTextView.getMovementMethod(); 1233 if (mMovement != null) { 1234 mMovement.onTakeFocus(mTextView, (Spannable) mTextView.getText(), direction); 1235 } 1236 1237 // The DecorView does not have focus when the 'Done' ExtractEditText button is 1238 // pressed. Since it is the ViewAncestor's mView, it requests focus before 1239 // ExtractEditText clears focus, which gives focus to the ExtractEditText. 1240 // This special case ensure that we keep current selection in that case. 1241 // It would be better to know why the DecorView does not have focus at that time. 1242 if (((mTextView.isInExtractedMode()) || mSelectionMoved) 1243 && selStart >= 0 && selEnd >= 0) { 1244 /* 1245 * Someone intentionally set the selection, so let them 1246 * do whatever it is that they wanted to do instead of 1247 * the default on-focus behavior. We reset the selection 1248 * here instead of just skipping the onTakeFocus() call 1249 * because some movement methods do something other than 1250 * just setting the selection in theirs and we still 1251 * need to go through that path. 1252 */ 1253 Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); 1254 } 1255 1256 if (mSelectAllOnFocus) { 1257 mTextView.selectAllText(); 1258 } 1259 1260 mTouchFocusSelected = true; 1261 } 1262 1263 mFrozenWithFocus = false; 1264 mSelectionMoved = false; 1265 1266 if (mError != null) { 1267 showError(); 1268 } 1269 1270 makeBlink(); 1271 } else { 1272 if (mError != null) { 1273 hideError(); 1274 } 1275 // Don't leave us in the middle of a batch edit. 1276 mTextView.onEndBatchEdit(); 1277 1278 if (mTextView.isInExtractedMode()) { 1279 hideCursorAndSpanControllers(); 1280 stopTextActionModeWithPreservingSelection(); 1281 } else { 1282 hideCursorAndSpanControllers(); 1283 if (mTextView.isTemporarilyDetached()) { 1284 stopTextActionModeWithPreservingSelection(); 1285 } else { 1286 stopTextActionMode(); 1287 } 1288 downgradeEasyCorrectionSpans(); 1289 } 1290 // No need to create the controller 1291 if (mSelectionModifierCursorController != null) { 1292 mSelectionModifierCursorController.resetTouchOffsets(); 1293 } 1294 } 1295 } 1296 1297 /** 1298 * Downgrades to simple suggestions all the easy correction spans that are not a spell check 1299 * span. 1300 */ 1301 private void downgradeEasyCorrectionSpans() { 1302 CharSequence text = mTextView.getText(); 1303 if (text instanceof Spannable) { 1304 Spannable spannable = (Spannable) text; 1305 SuggestionSpan[] suggestionSpans = spannable.getSpans(0, 1306 spannable.length(), SuggestionSpan.class); 1307 for (int i = 0; i < suggestionSpans.length; i++) { 1308 int flags = suggestionSpans[i].getFlags(); 1309 if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0 1310 && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) { 1311 flags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 1312 suggestionSpans[i].setFlags(flags); 1313 } 1314 } 1315 } 1316 } 1317 1318 void sendOnTextChanged(int start, int before, int after) { 1319 getSelectionActionModeHelper().onTextChanged(start, start + before); 1320 updateSpellCheckSpans(start, start + after, false); 1321 1322 // Flip flag to indicate the word iterator needs to have the text reset. 1323 mUpdateWordIteratorText = true; 1324 1325 // Hide the controllers as soon as text is modified (typing, procedural...) 1326 // We do not hide the span controllers, since they can be added when a new text is 1327 // inserted into the text view (voice IME). 1328 hideCursorControllers(); 1329 // Reset drag accelerator. 1330 if (mSelectionModifierCursorController != null) { 1331 mSelectionModifierCursorController.resetTouchOffsets(); 1332 } 1333 stopTextActionMode(); 1334 } 1335 1336 private int getLastTapPosition() { 1337 // No need to create the controller at that point, no last tap position saved 1338 if (mSelectionModifierCursorController != null) { 1339 int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); 1340 if (lastTapPosition >= 0) { 1341 // Safety check, should not be possible. 1342 if (lastTapPosition > mTextView.getText().length()) { 1343 lastTapPosition = mTextView.getText().length(); 1344 } 1345 return lastTapPosition; 1346 } 1347 } 1348 1349 return -1; 1350 } 1351 1352 void onWindowFocusChanged(boolean hasWindowFocus) { 1353 if (hasWindowFocus) { 1354 if (mBlink != null) { 1355 mBlink.uncancel(); 1356 makeBlink(); 1357 } 1358 if (mTextView.hasSelection() && !extractedTextModeWillBeStarted()) { 1359 refreshTextActionMode(); 1360 } 1361 } else { 1362 if (mBlink != null) { 1363 mBlink.cancel(); 1364 } 1365 if (mInputContentType != null) { 1366 mInputContentType.enterDown = false; 1367 } 1368 // Order matters! Must be done before onParentLostFocus to rely on isShowingUp 1369 hideCursorAndSpanControllers(); 1370 stopTextActionModeWithPreservingSelection(); 1371 if (mSuggestionsPopupWindow != null) { 1372 mSuggestionsPopupWindow.onParentLostFocus(); 1373 } 1374 1375 // Don't leave us in the middle of a batch edit. Same as in onFocusChanged 1376 ensureEndedBatchEdit(); 1377 } 1378 } 1379 1380 private void updateTapState(MotionEvent event) { 1381 final int action = event.getActionMasked(); 1382 if (action == MotionEvent.ACTION_DOWN) { 1383 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 1384 // Detect double tap and triple click. 1385 if (((mTapState == TAP_STATE_FIRST_TAP) 1386 || ((mTapState == TAP_STATE_DOUBLE_TAP) && isMouse)) 1387 && (SystemClock.uptimeMillis() - mLastTouchUpTime) 1388 <= ViewConfiguration.getDoubleTapTimeout()) { 1389 if (mTapState == TAP_STATE_FIRST_TAP) { 1390 mTapState = TAP_STATE_DOUBLE_TAP; 1391 } else { 1392 mTapState = TAP_STATE_TRIPLE_CLICK; 1393 } 1394 } else { 1395 mTapState = TAP_STATE_FIRST_TAP; 1396 } 1397 } 1398 if (action == MotionEvent.ACTION_UP) { 1399 mLastTouchUpTime = SystemClock.uptimeMillis(); 1400 } 1401 } 1402 1403 private boolean shouldFilterOutTouchEvent(MotionEvent event) { 1404 if (!event.isFromSource(InputDevice.SOURCE_MOUSE)) { 1405 return false; 1406 } 1407 final boolean primaryButtonStateChanged = 1408 ((mLastButtonState ^ event.getButtonState()) & MotionEvent.BUTTON_PRIMARY) != 0; 1409 final int action = event.getActionMasked(); 1410 if ((action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_UP) 1411 && !primaryButtonStateChanged) { 1412 return true; 1413 } 1414 if (action == MotionEvent.ACTION_MOVE 1415 && !event.isButtonPressed(MotionEvent.BUTTON_PRIMARY)) { 1416 return true; 1417 } 1418 return false; 1419 } 1420 1421 void onTouchEvent(MotionEvent event) { 1422 final boolean filterOutEvent = shouldFilterOutTouchEvent(event); 1423 mLastButtonState = event.getButtonState(); 1424 if (filterOutEvent) { 1425 if (event.getActionMasked() == MotionEvent.ACTION_UP) { 1426 mDiscardNextActionUp = true; 1427 } 1428 return; 1429 } 1430 updateTapState(event); 1431 updateFloatingToolbarVisibility(event); 1432 1433 if (hasSelectionController()) { 1434 getSelectionController().onTouchEvent(event); 1435 } 1436 1437 if (mShowSuggestionRunnable != null) { 1438 mTextView.removeCallbacks(mShowSuggestionRunnable); 1439 mShowSuggestionRunnable = null; 1440 } 1441 1442 if (event.getActionMasked() == MotionEvent.ACTION_UP) { 1443 mLastUpPositionX = event.getX(); 1444 mLastUpPositionY = event.getY(); 1445 } 1446 1447 if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { 1448 mLastDownPositionX = event.getX(); 1449 mLastDownPositionY = event.getY(); 1450 1451 // Reset this state; it will be re-set if super.onTouchEvent 1452 // causes focus to move to the view. 1453 mTouchFocusSelected = false; 1454 mIgnoreActionUpEvent = false; 1455 } 1456 } 1457 1458 private void updateFloatingToolbarVisibility(MotionEvent event) { 1459 if (mTextActionMode != null) { 1460 switch (event.getActionMasked()) { 1461 case MotionEvent.ACTION_MOVE: 1462 hideFloatingToolbar(ActionMode.DEFAULT_HIDE_DURATION); 1463 break; 1464 case MotionEvent.ACTION_UP: // fall through 1465 case MotionEvent.ACTION_CANCEL: 1466 showFloatingToolbar(); 1467 } 1468 } 1469 } 1470 1471 void hideFloatingToolbar(int duration) { 1472 if (mTextActionMode != null) { 1473 mTextView.removeCallbacks(mShowFloatingToolbar); 1474 mTextActionMode.hide(duration); 1475 } 1476 } 1477 1478 private void showFloatingToolbar() { 1479 if (mTextActionMode != null) { 1480 // Delay "show" so it doesn't interfere with click confirmations 1481 // or double-clicks that could "dismiss" the floating toolbar. 1482 int delay = ViewConfiguration.getDoubleTapTimeout(); 1483 mTextView.postDelayed(mShowFloatingToolbar, delay); 1484 1485 // This classifies the text and most likely returns before the toolbar is actually 1486 // shown. If not, it will update the toolbar with the result when classification 1487 // returns. We would rather not wait for a long running classification process. 1488 invalidateActionModeAsync(); 1489 } 1490 } 1491 1492 public void beginBatchEdit() { 1493 mInBatchEditControllers = true; 1494 final InputMethodState ims = mInputMethodState; 1495 if (ims != null) { 1496 int nesting = ++ims.mBatchEditNesting; 1497 if (nesting == 1) { 1498 ims.mCursorChanged = false; 1499 ims.mChangedDelta = 0; 1500 if (ims.mContentChanged) { 1501 // We already have a pending change from somewhere else, 1502 // so turn this into a full update. 1503 ims.mChangedStart = 0; 1504 ims.mChangedEnd = mTextView.getText().length(); 1505 } else { 1506 ims.mChangedStart = EXTRACT_UNKNOWN; 1507 ims.mChangedEnd = EXTRACT_UNKNOWN; 1508 ims.mContentChanged = false; 1509 } 1510 mUndoInputFilter.beginBatchEdit(); 1511 mTextView.onBeginBatchEdit(); 1512 } 1513 } 1514 } 1515 1516 public void endBatchEdit() { 1517 mInBatchEditControllers = false; 1518 final InputMethodState ims = mInputMethodState; 1519 if (ims != null) { 1520 int nesting = --ims.mBatchEditNesting; 1521 if (nesting == 0) { 1522 finishBatchEdit(ims); 1523 } 1524 } 1525 } 1526 1527 void ensureEndedBatchEdit() { 1528 final InputMethodState ims = mInputMethodState; 1529 if (ims != null && ims.mBatchEditNesting != 0) { 1530 ims.mBatchEditNesting = 0; 1531 finishBatchEdit(ims); 1532 } 1533 } 1534 1535 void finishBatchEdit(final InputMethodState ims) { 1536 mTextView.onEndBatchEdit(); 1537 mUndoInputFilter.endBatchEdit(); 1538 1539 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1540 mTextView.updateAfterEdit(); 1541 reportExtractedText(); 1542 } else if (ims.mCursorChanged) { 1543 // Cheesy way to get us to report the current cursor location. 1544 mTextView.invalidateCursor(); 1545 } 1546 // sendUpdateSelection knows to avoid sending if the selection did 1547 // not actually change. 1548 sendUpdateSelection(); 1549 1550 // Show drag handles if they were blocked by batch edit mode. 1551 if (mTextActionMode != null) { 1552 final CursorController cursorController = mTextView.hasSelection() 1553 ? getSelectionController() : getInsertionController(); 1554 if (cursorController != null && !cursorController.isActive() 1555 && !cursorController.isCursorBeingModified()) { 1556 cursorController.show(); 1557 } 1558 } 1559 } 1560 1561 static final int EXTRACT_NOTHING = -2; 1562 static final int EXTRACT_UNKNOWN = -1; 1563 1564 boolean extractText(ExtractedTextRequest request, ExtractedText outText) { 1565 return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, 1566 EXTRACT_UNKNOWN, outText); 1567 } 1568 1569 private boolean extractTextInternal(@Nullable ExtractedTextRequest request, 1570 int partialStartOffset, int partialEndOffset, int delta, 1571 @Nullable ExtractedText outText) { 1572 if (request == null || outText == null) { 1573 return false; 1574 } 1575 1576 final CharSequence content = mTextView.getText(); 1577 if (content == null) { 1578 return false; 1579 } 1580 1581 if (partialStartOffset != EXTRACT_NOTHING) { 1582 final int N = content.length(); 1583 if (partialStartOffset < 0) { 1584 outText.partialStartOffset = outText.partialEndOffset = -1; 1585 partialStartOffset = 0; 1586 partialEndOffset = N; 1587 } else { 1588 // Now use the delta to determine the actual amount of text 1589 // we need. 1590 partialEndOffset += delta; 1591 // Adjust offsets to ensure we contain full spans. 1592 if (content instanceof Spanned) { 1593 Spanned spanned = (Spanned) content; 1594 Object[] spans = spanned.getSpans(partialStartOffset, 1595 partialEndOffset, ParcelableSpan.class); 1596 int i = spans.length; 1597 while (i > 0) { 1598 i--; 1599 int j = spanned.getSpanStart(spans[i]); 1600 if (j < partialStartOffset) partialStartOffset = j; 1601 j = spanned.getSpanEnd(spans[i]); 1602 if (j > partialEndOffset) partialEndOffset = j; 1603 } 1604 } 1605 outText.partialStartOffset = partialStartOffset; 1606 outText.partialEndOffset = partialEndOffset - delta; 1607 1608 if (partialStartOffset > N) { 1609 partialStartOffset = N; 1610 } else if (partialStartOffset < 0) { 1611 partialStartOffset = 0; 1612 } 1613 if (partialEndOffset > N) { 1614 partialEndOffset = N; 1615 } else if (partialEndOffset < 0) { 1616 partialEndOffset = 0; 1617 } 1618 } 1619 if ((request.flags & InputConnection.GET_TEXT_WITH_STYLES) != 0) { 1620 outText.text = content.subSequence(partialStartOffset, 1621 partialEndOffset); 1622 } else { 1623 outText.text = TextUtils.substring(content, partialStartOffset, 1624 partialEndOffset); 1625 } 1626 } else { 1627 outText.partialStartOffset = 0; 1628 outText.partialEndOffset = 0; 1629 outText.text = ""; 1630 } 1631 outText.flags = 0; 1632 if (MetaKeyKeyListener.getMetaState(content, MetaKeyKeyListener.META_SELECTING) != 0) { 1633 outText.flags |= ExtractedText.FLAG_SELECTING; 1634 } 1635 if (mTextView.isSingleLine()) { 1636 outText.flags |= ExtractedText.FLAG_SINGLE_LINE; 1637 } 1638 outText.startOffset = 0; 1639 outText.selectionStart = mTextView.getSelectionStart(); 1640 outText.selectionEnd = mTextView.getSelectionEnd(); 1641 outText.hint = mTextView.getHint(); 1642 return true; 1643 } 1644 1645 boolean reportExtractedText() { 1646 final Editor.InputMethodState ims = mInputMethodState; 1647 if (ims == null) { 1648 return false; 1649 } 1650 ims.mSelectionModeChanged = false; 1651 final ExtractedTextRequest req = ims.mExtractedTextRequest; 1652 if (req == null) { 1653 return false; 1654 } 1655 final InputMethodManager imm = InputMethodManager.peekInstance(); 1656 if (imm == null) { 1657 return false; 1658 } 1659 if (TextView.DEBUG_EXTRACT) { 1660 Log.v(TextView.LOG_TAG, "Retrieving extracted start=" 1661 + ims.mChangedStart 1662 + " end=" + ims.mChangedEnd 1663 + " delta=" + ims.mChangedDelta); 1664 } 1665 if (ims.mChangedStart < 0 && !ims.mContentChanged) { 1666 ims.mChangedStart = EXTRACT_NOTHING; 1667 } 1668 if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, 1669 ims.mChangedDelta, ims.mExtractedText)) { 1670 if (TextView.DEBUG_EXTRACT) { 1671 Log.v(TextView.LOG_TAG, 1672 "Reporting extracted start=" 1673 + ims.mExtractedText.partialStartOffset 1674 + " end=" + ims.mExtractedText.partialEndOffset 1675 + ": " + ims.mExtractedText.text); 1676 } 1677 1678 imm.updateExtractedText(mTextView, req.token, ims.mExtractedText); 1679 ims.mChangedStart = EXTRACT_UNKNOWN; 1680 ims.mChangedEnd = EXTRACT_UNKNOWN; 1681 ims.mChangedDelta = 0; 1682 ims.mContentChanged = false; 1683 return true; 1684 } 1685 return false; 1686 } 1687 1688 private void sendUpdateSelection() { 1689 if (null != mInputMethodState && mInputMethodState.mBatchEditNesting <= 0) { 1690 final InputMethodManager imm = InputMethodManager.peekInstance(); 1691 if (null != imm) { 1692 final int selectionStart = mTextView.getSelectionStart(); 1693 final int selectionEnd = mTextView.getSelectionEnd(); 1694 int candStart = -1; 1695 int candEnd = -1; 1696 if (mTextView.getText() instanceof Spannable) { 1697 final Spannable sp = (Spannable) mTextView.getText(); 1698 candStart = EditableInputConnection.getComposingSpanStart(sp); 1699 candEnd = EditableInputConnection.getComposingSpanEnd(sp); 1700 } 1701 // InputMethodManager#updateSelection skips sending the message if 1702 // none of the parameters have changed since the last time we called it. 1703 imm.updateSelection(mTextView, 1704 selectionStart, selectionEnd, candStart, candEnd); 1705 } 1706 } 1707 } 1708 1709 void onDraw(Canvas canvas, Layout layout, Path highlight, Paint highlightPaint, 1710 int cursorOffsetVertical) { 1711 final int selectionStart = mTextView.getSelectionStart(); 1712 final int selectionEnd = mTextView.getSelectionEnd(); 1713 1714 final InputMethodState ims = mInputMethodState; 1715 if (ims != null && ims.mBatchEditNesting == 0) { 1716 InputMethodManager imm = InputMethodManager.peekInstance(); 1717 if (imm != null) { 1718 if (imm.isActive(mTextView)) { 1719 if (ims.mContentChanged || ims.mSelectionModeChanged) { 1720 // We are in extract mode and the content has changed 1721 // in some way... just report complete new text to the 1722 // input method. 1723 reportExtractedText(); 1724 } 1725 } 1726 } 1727 } 1728 1729 if (mCorrectionHighlighter != null) { 1730 mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); 1731 } 1732 1733 if (highlight != null && selectionStart == selectionEnd && mDrawableForCursor != null) { 1734 drawCursor(canvas, cursorOffsetVertical); 1735 // Rely on the drawable entirely, do not draw the cursor line. 1736 // Has to be done after the IMM related code above which relies on the highlight. 1737 highlight = null; 1738 } 1739 1740 if (mTextView.canHaveDisplayList() && canvas.isHardwareAccelerated()) { 1741 drawHardwareAccelerated(canvas, layout, highlight, highlightPaint, 1742 cursorOffsetVertical); 1743 } else { 1744 layout.draw(canvas, highlight, highlightPaint, cursorOffsetVertical); 1745 } 1746 1747 if (mSelectionActionModeHelper != null) { 1748 mSelectionActionModeHelper.onDraw(canvas); 1749 } 1750 } 1751 1752 private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight, 1753 Paint highlightPaint, int cursorOffsetVertical) { 1754 final long lineRange = layout.getLineRangeForDraw(canvas); 1755 int firstLine = TextUtils.unpackRangeStartFromLong(lineRange); 1756 int lastLine = TextUtils.unpackRangeEndFromLong(lineRange); 1757 if (lastLine < 0) return; 1758 1759 layout.drawBackground(canvas, highlight, highlightPaint, cursorOffsetVertical, 1760 firstLine, lastLine); 1761 1762 if (layout instanceof DynamicLayout) { 1763 if (mTextRenderNodes == null) { 1764 mTextRenderNodes = ArrayUtils.emptyArray(TextRenderNode.class); 1765 } 1766 1767 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1768 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1769 int[] blockIndices = dynamicLayout.getBlockIndices(); 1770 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1771 final int indexFirstChangedBlock = dynamicLayout.getIndexFirstChangedBlock(); 1772 1773 final ArraySet<Integer> blockSet = dynamicLayout.getBlocksAlwaysNeedToBeRedrawn(); 1774 if (blockSet != null) { 1775 for (int i = 0; i < blockSet.size(); i++) { 1776 final int blockIndex = dynamicLayout.getBlockIndex(blockSet.valueAt(i)); 1777 if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX 1778 && mTextRenderNodes[blockIndex] != null) { 1779 mTextRenderNodes[blockIndex].needsToBeShifted = true; 1780 } 1781 } 1782 } 1783 1784 int startBlock = Arrays.binarySearch(blockEndLines, 0, numberOfBlocks, firstLine); 1785 if (startBlock < 0) { 1786 startBlock = -(startBlock + 1); 1787 } 1788 startBlock = Math.min(indexFirstChangedBlock, startBlock); 1789 1790 int startIndexToFindAvailableRenderNode = 0; 1791 int lastIndex = numberOfBlocks; 1792 1793 for (int i = startBlock; i < numberOfBlocks; i++) { 1794 final int blockIndex = blockIndices[i]; 1795 if (i >= indexFirstChangedBlock 1796 && blockIndex != DynamicLayout.INVALID_BLOCK_INDEX 1797 && mTextRenderNodes[blockIndex] != null) { 1798 mTextRenderNodes[blockIndex].needsToBeShifted = true; 1799 } 1800 if (blockEndLines[i] < firstLine) { 1801 // Blocks in [indexFirstChangedBlock, firstLine) are not redrawn here. They will 1802 // be redrawn after they get scrolled into drawing range. 1803 continue; 1804 } 1805 startIndexToFindAvailableRenderNode = drawHardwareAcceleratedInner(canvas, layout, 1806 highlight, highlightPaint, cursorOffsetVertical, blockEndLines, 1807 blockIndices, i, numberOfBlocks, startIndexToFindAvailableRenderNode); 1808 if (blockEndLines[i] >= lastLine) { 1809 lastIndex = Math.max(indexFirstChangedBlock, i + 1); 1810 break; 1811 } 1812 } 1813 if (blockSet != null) { 1814 for (int i = 0; i < blockSet.size(); i++) { 1815 final int block = blockSet.valueAt(i); 1816 final int blockIndex = dynamicLayout.getBlockIndex(block); 1817 if (blockIndex == DynamicLayout.INVALID_BLOCK_INDEX 1818 || mTextRenderNodes[blockIndex] == null 1819 || mTextRenderNodes[blockIndex].needsToBeShifted) { 1820 startIndexToFindAvailableRenderNode = drawHardwareAcceleratedInner(canvas, 1821 layout, highlight, highlightPaint, cursorOffsetVertical, 1822 blockEndLines, blockIndices, block, numberOfBlocks, 1823 startIndexToFindAvailableRenderNode); 1824 } 1825 } 1826 } 1827 1828 dynamicLayout.setIndexFirstChangedBlock(lastIndex); 1829 } else { 1830 // Boring layout is used for empty and hint text 1831 layout.drawText(canvas, firstLine, lastLine); 1832 } 1833 } 1834 1835 private int drawHardwareAcceleratedInner(Canvas canvas, Layout layout, Path highlight, 1836 Paint highlightPaint, int cursorOffsetVertical, int[] blockEndLines, 1837 int[] blockIndices, int blockInfoIndex, int numberOfBlocks, 1838 int startIndexToFindAvailableRenderNode) { 1839 final int blockEndLine = blockEndLines[blockInfoIndex]; 1840 int blockIndex = blockIndices[blockInfoIndex]; 1841 1842 final boolean blockIsInvalid = blockIndex == DynamicLayout.INVALID_BLOCK_INDEX; 1843 if (blockIsInvalid) { 1844 blockIndex = getAvailableDisplayListIndex(blockIndices, numberOfBlocks, 1845 startIndexToFindAvailableRenderNode); 1846 // Note how dynamic layout's internal block indices get updated from Editor 1847 blockIndices[blockInfoIndex] = blockIndex; 1848 if (mTextRenderNodes[blockIndex] != null) { 1849 mTextRenderNodes[blockIndex].isDirty = true; 1850 } 1851 startIndexToFindAvailableRenderNode = blockIndex + 1; 1852 } 1853 1854 if (mTextRenderNodes[blockIndex] == null) { 1855 mTextRenderNodes[blockIndex] = new TextRenderNode("Text " + blockIndex); 1856 } 1857 1858 final boolean blockDisplayListIsInvalid = mTextRenderNodes[blockIndex].needsRecord(); 1859 RenderNode blockDisplayList = mTextRenderNodes[blockIndex].renderNode; 1860 if (mTextRenderNodes[blockIndex].needsToBeShifted || blockDisplayListIsInvalid) { 1861 final int blockBeginLine = blockInfoIndex == 0 ? 1862 0 : blockEndLines[blockInfoIndex - 1] + 1; 1863 final int top = layout.getLineTop(blockBeginLine); 1864 final int bottom = layout.getLineBottom(blockEndLine); 1865 int left = 0; 1866 int right = mTextView.getWidth(); 1867 if (mTextView.getHorizontallyScrolling()) { 1868 float min = Float.MAX_VALUE; 1869 float max = Float.MIN_VALUE; 1870 for (int line = blockBeginLine; line <= blockEndLine; line++) { 1871 min = Math.min(min, layout.getLineLeft(line)); 1872 max = Math.max(max, layout.getLineRight(line)); 1873 } 1874 left = (int) min; 1875 right = (int) (max + 0.5f); 1876 } 1877 1878 // Rebuild display list if it is invalid 1879 if (blockDisplayListIsInvalid) { 1880 final DisplayListCanvas displayListCanvas = blockDisplayList.start( 1881 right - left, bottom - top); 1882 try { 1883 // drawText is always relative to TextView's origin, this translation 1884 // brings this range of text back to the top left corner of the viewport 1885 displayListCanvas.translate(-left, -top); 1886 layout.drawText(displayListCanvas, blockBeginLine, blockEndLine); 1887 mTextRenderNodes[blockIndex].isDirty = false; 1888 // No need to untranslate, previous context is popped after 1889 // drawDisplayList 1890 } finally { 1891 blockDisplayList.end(displayListCanvas); 1892 // Same as drawDisplayList below, handled by our TextView's parent 1893 blockDisplayList.setClipToBounds(false); 1894 } 1895 } 1896 1897 // Valid display list only needs to update its drawing location. 1898 blockDisplayList.setLeftTopRightBottom(left, top, right, bottom); 1899 mTextRenderNodes[blockIndex].needsToBeShifted = false; 1900 } 1901 ((DisplayListCanvas) canvas).drawRenderNode(blockDisplayList); 1902 return startIndexToFindAvailableRenderNode; 1903 } 1904 1905 private int getAvailableDisplayListIndex(int[] blockIndices, int numberOfBlocks, 1906 int searchStartIndex) { 1907 int length = mTextRenderNodes.length; 1908 for (int i = searchStartIndex; i < length; i++) { 1909 boolean blockIndexFound = false; 1910 for (int j = 0; j < numberOfBlocks; j++) { 1911 if (blockIndices[j] == i) { 1912 blockIndexFound = true; 1913 break; 1914 } 1915 } 1916 if (blockIndexFound) continue; 1917 return i; 1918 } 1919 1920 // No available index found, the pool has to grow 1921 mTextRenderNodes = GrowingArrayUtils.append(mTextRenderNodes, length, null); 1922 return length; 1923 } 1924 1925 private void drawCursor(Canvas canvas, int cursorOffsetVertical) { 1926 final boolean translate = cursorOffsetVertical != 0; 1927 if (translate) canvas.translate(0, cursorOffsetVertical); 1928 if (mDrawableForCursor != null) { 1929 mDrawableForCursor.draw(canvas); 1930 } 1931 if (translate) canvas.translate(0, -cursorOffsetVertical); 1932 } 1933 1934 void invalidateHandlesAndActionMode() { 1935 if (mSelectionModifierCursorController != null) { 1936 mSelectionModifierCursorController.invalidateHandles(); 1937 } 1938 if (mInsertionPointCursorController != null) { 1939 mInsertionPointCursorController.invalidateHandle(); 1940 } 1941 if (mTextActionMode != null) { 1942 invalidateActionMode(); 1943 } 1944 } 1945 1946 /** 1947 * Invalidates all the sub-display lists that overlap the specified character range 1948 */ 1949 void invalidateTextDisplayList(Layout layout, int start, int end) { 1950 if (mTextRenderNodes != null && layout instanceof DynamicLayout) { 1951 final int firstLine = layout.getLineForOffset(start); 1952 final int lastLine = layout.getLineForOffset(end); 1953 1954 DynamicLayout dynamicLayout = (DynamicLayout) layout; 1955 int[] blockEndLines = dynamicLayout.getBlockEndLines(); 1956 int[] blockIndices = dynamicLayout.getBlockIndices(); 1957 final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); 1958 1959 int i = 0; 1960 // Skip the blocks before firstLine 1961 while (i < numberOfBlocks) { 1962 if (blockEndLines[i] >= firstLine) break; 1963 i++; 1964 } 1965 1966 // Invalidate all subsequent blocks until lastLine is passed 1967 while (i < numberOfBlocks) { 1968 final int blockIndex = blockIndices[i]; 1969 if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX) { 1970 mTextRenderNodes[blockIndex].isDirty = true; 1971 } 1972 if (blockEndLines[i] >= lastLine) break; 1973 i++; 1974 } 1975 } 1976 } 1977 1978 void invalidateTextDisplayList() { 1979 if (mTextRenderNodes != null) { 1980 for (int i = 0; i < mTextRenderNodes.length; i++) { 1981 if (mTextRenderNodes[i] != null) mTextRenderNodes[i].isDirty = true; 1982 } 1983 } 1984 } 1985 1986 void updateCursorPosition() { 1987 if (mTextView.mCursorDrawableRes == 0) { 1988 mDrawableForCursor = null; 1989 return; 1990 } 1991 1992 final Layout layout = mTextView.getLayout(); 1993 final int offset = mTextView.getSelectionStart(); 1994 final int line = layout.getLineForOffset(offset); 1995 final int top = layout.getLineTop(line); 1996 final int bottom = layout.getLineBottomWithoutSpacing(line); 1997 1998 final boolean clamped = layout.shouldClampCursor(line); 1999 updateCursorPosition(top, bottom, layout.getPrimaryHorizontal(offset, clamped)); 2000 } 2001 2002 void refreshTextActionMode() { 2003 if (extractedTextModeWillBeStarted()) { 2004 mRestartActionModeOnNextRefresh = false; 2005 return; 2006 } 2007 final boolean hasSelection = mTextView.hasSelection(); 2008 final SelectionModifierCursorController selectionController = getSelectionController(); 2009 final InsertionPointCursorController insertionController = getInsertionController(); 2010 if ((selectionController != null && selectionController.isCursorBeingModified()) 2011 || (insertionController != null && insertionController.isCursorBeingModified())) { 2012 // ActionMode should be managed by the currently active cursor controller. 2013 mRestartActionModeOnNextRefresh = false; 2014 return; 2015 } 2016 if (hasSelection) { 2017 hideInsertionPointCursorController(); 2018 if (mTextActionMode == null) { 2019 if (mRestartActionModeOnNextRefresh) { 2020 // To avoid distraction, newly start action mode only when selection action 2021 // mode is being restarted. 2022 startSelectionActionModeAsync(false); 2023 } 2024 } else if (selectionController == null || !selectionController.isActive()) { 2025 // Insertion action mode is active. Avoid dismissing the selection. 2026 stopTextActionModeWithPreservingSelection(); 2027 startSelectionActionModeAsync(false); 2028 } else { 2029 mTextActionMode.invalidateContentRect(); 2030 } 2031 } else { 2032 // Insertion action mode is started only when insertion controller is explicitly 2033 // activated. 2034 if (insertionController == null || !insertionController.isActive()) { 2035 stopTextActionMode(); 2036 } else if (mTextActionMode != null) { 2037 mTextActionMode.invalidateContentRect(); 2038 } 2039 } 2040 mRestartActionModeOnNextRefresh = false; 2041 } 2042 2043 /** 2044 * Start an Insertion action mode. 2045 */ 2046 void startInsertionActionMode() { 2047 if (mInsertionActionModeRunnable != null) { 2048 mTextView.removeCallbacks(mInsertionActionModeRunnable); 2049 } 2050 if (extractedTextModeWillBeStarted()) { 2051 return; 2052 } 2053 stopTextActionMode(); 2054 2055 ActionMode.Callback actionModeCallback = 2056 new TextActionModeCallback(false /* hasSelection */); 2057 mTextActionMode = mTextView.startActionMode( 2058 actionModeCallback, ActionMode.TYPE_FLOATING); 2059 if (mTextActionMode != null && getInsertionController() != null) { 2060 getInsertionController().show(); 2061 } 2062 } 2063 2064 @NonNull 2065 TextView getTextView() { 2066 return mTextView; 2067 } 2068 2069 @Nullable 2070 ActionMode getTextActionMode() { 2071 return mTextActionMode; 2072 } 2073 2074 void setRestartActionModeOnNextRefresh(boolean value) { 2075 mRestartActionModeOnNextRefresh = value; 2076 } 2077 2078 /** 2079 * Asynchronously starts a selection action mode using the TextClassifier. 2080 */ 2081 void startSelectionActionModeAsync(boolean adjustSelection) { 2082 getSelectionActionModeHelper().startActionModeAsync(adjustSelection); 2083 } 2084 2085 /** 2086 * Asynchronously invalidates an action mode using the TextClassifier. 2087 */ 2088 void invalidateActionModeAsync() { 2089 getSelectionActionModeHelper().invalidateActionModeAsync(); 2090 } 2091 2092 /** 2093 * Synchronously invalidates an action mode without the TextClassifier. 2094 */ 2095 private void invalidateActionMode() { 2096 if (mTextActionMode != null) { 2097 mTextActionMode.invalidate(); 2098 } 2099 } 2100 2101 private SelectionActionModeHelper getSelectionActionModeHelper() { 2102 if (mSelectionActionModeHelper == null) { 2103 mSelectionActionModeHelper = new SelectionActionModeHelper(this); 2104 } 2105 return mSelectionActionModeHelper; 2106 } 2107 2108 /** 2109 * If the TextView allows text selection, selects the current word when no existing selection 2110 * was available and starts a drag. 2111 * 2112 * @return true if the drag was started. 2113 */ 2114 private boolean selectCurrentWordAndStartDrag() { 2115 if (mInsertionActionModeRunnable != null) { 2116 mTextView.removeCallbacks(mInsertionActionModeRunnable); 2117 } 2118 if (extractedTextModeWillBeStarted()) { 2119 return false; 2120 } 2121 if (!checkField()) { 2122 return false; 2123 } 2124 if (!mTextView.hasSelection() && !selectCurrentWord()) { 2125 // No selection and cannot select a word. 2126 return false; 2127 } 2128 stopTextActionModeWithPreservingSelection(); 2129 getSelectionController().enterDrag( 2130 SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_WORD); 2131 return true; 2132 } 2133 2134 /** 2135 * Checks whether a selection can be performed on the current TextView. 2136 * 2137 * @return true if a selection can be performed 2138 */ 2139 boolean checkField() { 2140 if (!mTextView.canSelectText() || !mTextView.requestFocus()) { 2141 Log.w(TextView.LOG_TAG, 2142 "TextView does not support text selection. Selection cancelled."); 2143 return false; 2144 } 2145 return true; 2146 } 2147 2148 boolean startSelectionActionModeInternal() { 2149 if (extractedTextModeWillBeStarted()) { 2150 return false; 2151 } 2152 if (mTextActionMode != null) { 2153 // Text action mode is already started 2154 invalidateActionMode(); 2155 return false; 2156 } 2157 2158 if (!checkField() || !mTextView.hasSelection()) { 2159 return false; 2160 } 2161 2162 ActionMode.Callback actionModeCallback = 2163 new TextActionModeCallback(true /* hasSelection */); 2164 mTextActionMode = mTextView.startActionMode(actionModeCallback, ActionMode.TYPE_FLOATING); 2165 2166 final boolean selectionStarted = mTextActionMode != null; 2167 if (selectionStarted && !mTextView.isTextSelectable() && mShowSoftInputOnFocus) { 2168 // Show the IME to be able to replace text, except when selecting non editable text. 2169 final InputMethodManager imm = InputMethodManager.peekInstance(); 2170 if (imm != null) { 2171 imm.showSoftInput(mTextView, 0, null); 2172 } 2173 } 2174 return selectionStarted; 2175 } 2176 2177 private boolean extractedTextModeWillBeStarted() { 2178 if (!(mTextView.isInExtractedMode())) { 2179 final InputMethodManager imm = InputMethodManager.peekInstance(); 2180 return imm != null && imm.isFullscreenMode(); 2181 } 2182 return false; 2183 } 2184 2185 /** 2186 * @return <code>true</code> if it's reasonable to offer to show suggestions depending on 2187 * the current cursor position or selection range. This method is consistent with the 2188 * method to show suggestions {@link SuggestionsPopupWindow#updateSuggestions}. 2189 */ 2190 private boolean shouldOfferToShowSuggestions() { 2191 CharSequence text = mTextView.getText(); 2192 if (!(text instanceof Spannable)) return false; 2193 2194 final Spannable spannable = (Spannable) text; 2195 final int selectionStart = mTextView.getSelectionStart(); 2196 final int selectionEnd = mTextView.getSelectionEnd(); 2197 final SuggestionSpan[] suggestionSpans = spannable.getSpans(selectionStart, selectionEnd, 2198 SuggestionSpan.class); 2199 if (suggestionSpans.length == 0) { 2200 return false; 2201 } 2202 if (selectionStart == selectionEnd) { 2203 // Spans overlap the cursor. 2204 for (int i = 0; i < suggestionSpans.length; i++) { 2205 if (suggestionSpans[i].getSuggestions().length > 0) { 2206 return true; 2207 } 2208 } 2209 return false; 2210 } 2211 int minSpanStart = mTextView.getText().length(); 2212 int maxSpanEnd = 0; 2213 int unionOfSpansCoveringSelectionStartStart = mTextView.getText().length(); 2214 int unionOfSpansCoveringSelectionStartEnd = 0; 2215 boolean hasValidSuggestions = false; 2216 for (int i = 0; i < suggestionSpans.length; i++) { 2217 final int spanStart = spannable.getSpanStart(suggestionSpans[i]); 2218 final int spanEnd = spannable.getSpanEnd(suggestionSpans[i]); 2219 minSpanStart = Math.min(minSpanStart, spanStart); 2220 maxSpanEnd = Math.max(maxSpanEnd, spanEnd); 2221 if (selectionStart < spanStart || selectionStart > spanEnd) { 2222 // The span doesn't cover the current selection start point. 2223 continue; 2224 } 2225 hasValidSuggestions = 2226 hasValidSuggestions || suggestionSpans[i].getSuggestions().length > 0; 2227 unionOfSpansCoveringSelectionStartStart = 2228 Math.min(unionOfSpansCoveringSelectionStartStart, spanStart); 2229 unionOfSpansCoveringSelectionStartEnd = 2230 Math.max(unionOfSpansCoveringSelectionStartEnd, spanEnd); 2231 } 2232 if (!hasValidSuggestions) { 2233 return false; 2234 } 2235 if (unionOfSpansCoveringSelectionStartStart >= unionOfSpansCoveringSelectionStartEnd) { 2236 // No spans cover the selection start point. 2237 return false; 2238 } 2239 if (minSpanStart < unionOfSpansCoveringSelectionStartStart 2240 || maxSpanEnd > unionOfSpansCoveringSelectionStartEnd) { 2241 // There is a span that is not covered by the union. In this case, we soouldn't offer 2242 // to show suggestions as it's confusing. 2243 return false; 2244 } 2245 return true; 2246 } 2247 2248 /** 2249 * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with 2250 * {@link SuggestionSpan#FLAG_EASY_CORRECT} set. 2251 */ 2252 private boolean isCursorInsideEasyCorrectionSpan() { 2253 Spannable spannable = (Spannable) mTextView.getText(); 2254 SuggestionSpan[] suggestionSpans = spannable.getSpans(mTextView.getSelectionStart(), 2255 mTextView.getSelectionEnd(), SuggestionSpan.class); 2256 for (int i = 0; i < suggestionSpans.length; i++) { 2257 if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) { 2258 return true; 2259 } 2260 } 2261 return false; 2262 } 2263 2264 void onTouchUpEvent(MotionEvent event) { 2265 if (getSelectionActionModeHelper().resetSelection( 2266 getTextView().getOffsetForPosition(event.getX(), event.getY()))) { 2267 return; 2268 } 2269 2270 boolean selectAllGotFocus = mSelectAllOnFocus && mTextView.didTouchFocusSelect(); 2271 hideCursorAndSpanControllers(); 2272 stopTextActionMode(); 2273 CharSequence text = mTextView.getText(); 2274 if (!selectAllGotFocus && text.length() > 0) { 2275 // Move cursor 2276 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 2277 Selection.setSelection((Spannable) text, offset); 2278 if (mSpellChecker != null) { 2279 // When the cursor moves, the word that was typed may need spell check 2280 mSpellChecker.onSelectionChanged(); 2281 } 2282 2283 if (!extractedTextModeWillBeStarted()) { 2284 if (isCursorInsideEasyCorrectionSpan()) { 2285 // Cancel the single tap delayed runnable. 2286 if (mInsertionActionModeRunnable != null) { 2287 mTextView.removeCallbacks(mInsertionActionModeRunnable); 2288 } 2289 2290 mShowSuggestionRunnable = new Runnable() { 2291 public void run() { 2292 replace(); 2293 } 2294 }; 2295 // removeCallbacks is performed on every touch 2296 mTextView.postDelayed(mShowSuggestionRunnable, 2297 ViewConfiguration.getDoubleTapTimeout()); 2298 } else if (hasInsertionController()) { 2299 getInsertionController().show(); 2300 } 2301 } 2302 } 2303 } 2304 2305 protected void stopTextActionMode() { 2306 if (mTextActionMode != null) { 2307 // This will hide the mSelectionModifierCursorController 2308 mTextActionMode.finish(); 2309 } 2310 } 2311 2312 private void stopTextActionModeWithPreservingSelection() { 2313 if (mTextActionMode != null) { 2314 mRestartActionModeOnNextRefresh = true; 2315 } 2316 mPreserveSelection = true; 2317 stopTextActionMode(); 2318 mPreserveSelection = false; 2319 } 2320 2321 /** 2322 * @return True if this view supports insertion handles. 2323 */ 2324 boolean hasInsertionController() { 2325 return mInsertionControllerEnabled; 2326 } 2327 2328 /** 2329 * @return True if this view supports selection handles. 2330 */ 2331 boolean hasSelectionController() { 2332 return mSelectionControllerEnabled; 2333 } 2334 2335 private InsertionPointCursorController getInsertionController() { 2336 if (!mInsertionControllerEnabled) { 2337 return null; 2338 } 2339 2340 if (mInsertionPointCursorController == null) { 2341 mInsertionPointCursorController = new InsertionPointCursorController(); 2342 2343 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 2344 observer.addOnTouchModeChangeListener(mInsertionPointCursorController); 2345 } 2346 2347 return mInsertionPointCursorController; 2348 } 2349 2350 @Nullable 2351 SelectionModifierCursorController getSelectionController() { 2352 if (!mSelectionControllerEnabled) { 2353 return null; 2354 } 2355 2356 if (mSelectionModifierCursorController == null) { 2357 mSelectionModifierCursorController = new SelectionModifierCursorController(); 2358 2359 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 2360 observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); 2361 } 2362 2363 return mSelectionModifierCursorController; 2364 } 2365 2366 @VisibleForTesting 2367 @Nullable 2368 public Drawable getCursorDrawable() { 2369 return mDrawableForCursor; 2370 } 2371 2372 private void updateCursorPosition(int top, int bottom, float horizontal) { 2373 if (mDrawableForCursor == null) { 2374 mDrawableForCursor = mTextView.getContext().getDrawable( 2375 mTextView.mCursorDrawableRes); 2376 } 2377 final int left = clampHorizontalPosition(mDrawableForCursor, horizontal); 2378 final int width = mDrawableForCursor.getIntrinsicWidth(); 2379 mDrawableForCursor.setBounds(left, top - mTempRect.top, left + width, 2380 bottom + mTempRect.bottom); 2381 } 2382 2383 /** 2384 * Return clamped position for the drawable. If the drawable is within the boundaries of the 2385 * view, then it is offset with the left padding of the cursor drawable. If the drawable is at 2386 * the beginning or the end of the text then its drawable edge is aligned with left or right of 2387 * the view boundary. If the drawable is null, horizontal parameter is aligned to left or right 2388 * of the view. 2389 * 2390 * @param drawable Drawable. Can be null. 2391 * @param horizontal Horizontal position for the drawable. 2392 * @return The clamped horizontal position for the drawable. 2393 */ 2394 private int clampHorizontalPosition(@Nullable final Drawable drawable, float horizontal) { 2395 horizontal = Math.max(0.5f, horizontal - 0.5f); 2396 if (mTempRect == null) mTempRect = new Rect(); 2397 2398 int drawableWidth = 0; 2399 if (drawable != null) { 2400 drawable.getPadding(mTempRect); 2401 drawableWidth = drawable.getIntrinsicWidth(); 2402 } else { 2403 mTempRect.setEmpty(); 2404 } 2405 2406 int scrollX = mTextView.getScrollX(); 2407 float horizontalDiff = horizontal - scrollX; 2408 int viewClippedWidth = mTextView.getWidth() - mTextView.getCompoundPaddingLeft() 2409 - mTextView.getCompoundPaddingRight(); 2410 2411 final int left; 2412 if (horizontalDiff >= (viewClippedWidth - 1f)) { 2413 // at the rightmost position 2414 left = viewClippedWidth + scrollX - (drawableWidth - mTempRect.right); 2415 } else if (Math.abs(horizontalDiff) <= 1f 2416 || (TextUtils.isEmpty(mTextView.getText()) 2417 && (TextView.VERY_WIDE - scrollX) <= (viewClippedWidth + 1f) 2418 && horizontal <= 1f)) { 2419 // at the leftmost position 2420 left = scrollX - mTempRect.left; 2421 } else { 2422 left = (int) horizontal - mTempRect.left; 2423 } 2424 return left; 2425 } 2426 2427 /** 2428 * Called by the framework in response to a text auto-correction (such as fixing a typo using a 2429 * a dictionary) from the current input method, provided by it calling 2430 * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default 2431 * implementation flashes the background of the corrected word to provide feedback to the user. 2432 * 2433 * @param info The auto correct info about the text that was corrected. 2434 */ 2435 public void onCommitCorrection(CorrectionInfo info) { 2436 if (mCorrectionHighlighter == null) { 2437 mCorrectionHighlighter = new CorrectionHighlighter(); 2438 } else { 2439 mCorrectionHighlighter.invalidate(false); 2440 } 2441 2442 mCorrectionHighlighter.highlight(info); 2443 mUndoInputFilter.freezeLastEdit(); 2444 } 2445 2446 void onScrollChanged() { 2447 if (mPositionListener != null) { 2448 mPositionListener.onScrollChanged(); 2449 } 2450 if (mTextActionMode != null) { 2451 mTextActionMode.invalidateContentRect(); 2452 } 2453 } 2454 2455 /** 2456 * @return True when the TextView isFocused and has a valid zero-length selection (cursor). 2457 */ 2458 private boolean shouldBlink() { 2459 if (!isCursorVisible() || !mTextView.isFocused()) return false; 2460 2461 final int start = mTextView.getSelectionStart(); 2462 if (start < 0) return false; 2463 2464 final int end = mTextView.getSelectionEnd(); 2465 if (end < 0) return false; 2466 2467 return start == end; 2468 } 2469 2470 void makeBlink() { 2471 if (shouldBlink()) { 2472 mShowCursor = SystemClock.uptimeMillis(); 2473 if (mBlink == null) mBlink = new Blink(); 2474 mTextView.removeCallbacks(mBlink); 2475 mTextView.postDelayed(mBlink, BLINK); 2476 } else { 2477 if (mBlink != null) mTextView.removeCallbacks(mBlink); 2478 } 2479 } 2480 2481 private class Blink implements Runnable { 2482 private boolean mCancelled; 2483 2484 public void run() { 2485 if (mCancelled) { 2486 return; 2487 } 2488 2489 mTextView.removeCallbacks(this); 2490 2491 if (shouldBlink()) { 2492 if (mTextView.getLayout() != null) { 2493 mTextView.invalidateCursorPath(); 2494 } 2495 2496 mTextView.postDelayed(this, BLINK); 2497 } 2498 } 2499 2500 void cancel() { 2501 if (!mCancelled) { 2502 mTextView.removeCallbacks(this); 2503 mCancelled = true; 2504 } 2505 } 2506 2507 void uncancel() { 2508 mCancelled = false; 2509 } 2510 } 2511 2512 private DragShadowBuilder getTextThumbnailBuilder(int start, int end) { 2513 TextView shadowView = (TextView) View.inflate(mTextView.getContext(), 2514 com.android.internal.R.layout.text_drag_thumbnail, null); 2515 2516 if (shadowView == null) { 2517 throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); 2518 } 2519 2520 if (end - start > DRAG_SHADOW_MAX_TEXT_LENGTH) { 2521 final long range = getCharClusterRange(start + DRAG_SHADOW_MAX_TEXT_LENGTH); 2522 end = TextUtils.unpackRangeEndFromLong(range); 2523 } 2524 final CharSequence text = mTextView.getTransformedText(start, end); 2525 shadowView.setText(text); 2526 shadowView.setTextColor(mTextView.getTextColors()); 2527 2528 shadowView.setTextAppearance(R.styleable.Theme_textAppearanceLarge); 2529 shadowView.setGravity(Gravity.CENTER); 2530 2531 shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 2532 ViewGroup.LayoutParams.WRAP_CONTENT)); 2533 2534 final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); 2535 shadowView.measure(size, size); 2536 2537 shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight()); 2538 shadowView.invalidate(); 2539 return new DragShadowBuilder(shadowView); 2540 } 2541 2542 private static class DragLocalState { 2543 public TextView sourceTextView; 2544 public int start, end; 2545 2546 public DragLocalState(TextView sourceTextView, int start, int end) { 2547 this.sourceTextView = sourceTextView; 2548 this.start = start; 2549 this.end = end; 2550 } 2551 } 2552 2553 void onDrop(DragEvent event) { 2554 SpannableStringBuilder content = new SpannableStringBuilder(); 2555 2556 final DragAndDropPermissions permissions = DragAndDropPermissions.obtain(event); 2557 if (permissions != null) { 2558 permissions.takeTransient(); 2559 } 2560 2561 try { 2562 ClipData clipData = event.getClipData(); 2563 final int itemCount = clipData.getItemCount(); 2564 for (int i = 0; i < itemCount; i++) { 2565 Item item = clipData.getItemAt(i); 2566 content.append(item.coerceToStyledText(mTextView.getContext())); 2567 } 2568 } finally { 2569 if (permissions != null) { 2570 permissions.release(); 2571 } 2572 } 2573 2574 mTextView.beginBatchEdit(); 2575 mUndoInputFilter.freezeLastEdit(); 2576 try { 2577 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 2578 Object localState = event.getLocalState(); 2579 DragLocalState dragLocalState = null; 2580 if (localState instanceof DragLocalState) { 2581 dragLocalState = (DragLocalState) localState; 2582 } 2583 boolean dragDropIntoItself = dragLocalState != null 2584 && dragLocalState.sourceTextView == mTextView; 2585 2586 if (dragDropIntoItself) { 2587 if (offset >= dragLocalState.start && offset < dragLocalState.end) { 2588 // A drop inside the original selection discards the drop. 2589 return; 2590 } 2591 } 2592 2593 final int originalLength = mTextView.getText().length(); 2594 int min = offset; 2595 int max = offset; 2596 2597 Selection.setSelection((Spannable) mTextView.getText(), max); 2598 mTextView.replaceText_internal(min, max, content); 2599 2600 if (dragDropIntoItself) { 2601 int dragSourceStart = dragLocalState.start; 2602 int dragSourceEnd = dragLocalState.end; 2603 if (max <= dragSourceStart) { 2604 // Inserting text before selection has shifted positions 2605 final int shift = mTextView.getText().length() - originalLength; 2606 dragSourceStart += shift; 2607 dragSourceEnd += shift; 2608 } 2609 2610 // Delete original selection 2611 mTextView.deleteText_internal(dragSourceStart, dragSourceEnd); 2612 2613 // Make sure we do not leave two adjacent spaces. 2614 final int prevCharIdx = Math.max(0, dragSourceStart - 1); 2615 final int nextCharIdx = Math.min(mTextView.getText().length(), dragSourceStart + 1); 2616 if (nextCharIdx > prevCharIdx + 1) { 2617 CharSequence t = mTextView.getTransformedText(prevCharIdx, nextCharIdx); 2618 if (Character.isSpaceChar(t.charAt(0)) && Character.isSpaceChar(t.charAt(1))) { 2619 mTextView.deleteText_internal(prevCharIdx, prevCharIdx + 1); 2620 } 2621 } 2622 } 2623 } finally { 2624 mTextView.endBatchEdit(); 2625 mUndoInputFilter.freezeLastEdit(); 2626 } 2627 } 2628 2629 public void addSpanWatchers(Spannable text) { 2630 final int textLength = text.length(); 2631 2632 if (mKeyListener != null) { 2633 text.setSpan(mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2634 } 2635 2636 if (mSpanController == null) { 2637 mSpanController = new SpanController(); 2638 } 2639 text.setSpan(mSpanController, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); 2640 } 2641 2642 void setContextMenuAnchor(float x, float y) { 2643 mContextMenuAnchorX = x; 2644 mContextMenuAnchorY = y; 2645 } 2646 2647 void onCreateContextMenu(ContextMenu menu) { 2648 if (mIsBeingLongClicked || Float.isNaN(mContextMenuAnchorX) 2649 || Float.isNaN(mContextMenuAnchorY)) { 2650 return; 2651 } 2652 final int offset = mTextView.getOffsetForPosition(mContextMenuAnchorX, mContextMenuAnchorY); 2653 if (offset == -1) { 2654 return; 2655 } 2656 2657 stopTextActionModeWithPreservingSelection(); 2658 if (mTextView.canSelectText()) { 2659 final boolean isOnSelection = mTextView.hasSelection() 2660 && offset >= mTextView.getSelectionStart() 2661 && offset <= mTextView.getSelectionEnd(); 2662 if (!isOnSelection) { 2663 // Right clicked position is not on the selection. Remove the selection and move the 2664 // cursor to the right clicked position. 2665 Selection.setSelection((Spannable) mTextView.getText(), offset); 2666 stopTextActionMode(); 2667 } 2668 } 2669 2670 if (shouldOfferToShowSuggestions()) { 2671 final SuggestionInfo[] suggestionInfoArray = 2672 new SuggestionInfo[SuggestionSpan.SUGGESTIONS_MAX_SIZE]; 2673 for (int i = 0; i < suggestionInfoArray.length; i++) { 2674 suggestionInfoArray[i] = new SuggestionInfo(); 2675 } 2676 final SubMenu subMenu = menu.addSubMenu(Menu.NONE, Menu.NONE, MENU_ITEM_ORDER_REPLACE, 2677 com.android.internal.R.string.replace); 2678 final int numItems = mSuggestionHelper.getSuggestionInfo(suggestionInfoArray, null); 2679 for (int i = 0; i < numItems; i++) { 2680 final SuggestionInfo info = suggestionInfoArray[i]; 2681 subMenu.add(Menu.NONE, Menu.NONE, i, info.mText) 2682 .setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() { 2683 @Override 2684 public boolean onMenuItemClick(MenuItem item) { 2685 replaceWithSuggestion(info); 2686 return true; 2687 } 2688 }); 2689 } 2690 } 2691 2692 menu.add(Menu.NONE, TextView.ID_UNDO, MENU_ITEM_ORDER_UNDO, 2693 com.android.internal.R.string.undo) 2694 .setAlphabeticShortcut('z') 2695 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2696 .setEnabled(mTextView.canUndo()); 2697 menu.add(Menu.NONE, TextView.ID_REDO, MENU_ITEM_ORDER_REDO, 2698 com.android.internal.R.string.redo) 2699 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2700 .setEnabled(mTextView.canRedo()); 2701 2702 menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, 2703 com.android.internal.R.string.cut) 2704 .setAlphabeticShortcut('x') 2705 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2706 .setEnabled(mTextView.canCut()); 2707 menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, 2708 com.android.internal.R.string.copy) 2709 .setAlphabeticShortcut('c') 2710 .setOnMenuItemClickListener(mOnContextMenuItemClickListener) 2711 .setEnabled(mTextView.canCopy()); 2712 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, 2713 com.android.internal.R.string.paste) 2714 .setAlphabeticShortcut('v') 2715 .setEnabled(mTextView.canPaste()) 2716 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2717 menu.add(Menu.NONE, TextView.ID_PASTE_AS_PLAIN_TEXT, MENU_ITEM_ORDER_PASTE_AS_PLAIN_TEXT, 2718 com.android.internal.R.string.paste_as_plain_text) 2719 .setEnabled(mTextView.canPasteAsPlainText()) 2720 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2721 menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, 2722 com.android.internal.R.string.share) 2723 .setEnabled(mTextView.canShare()) 2724 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2725 menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, 2726 com.android.internal.R.string.selectAll) 2727 .setAlphabeticShortcut('a') 2728 .setEnabled(mTextView.canSelectAllText()) 2729 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2730 menu.add(Menu.NONE, TextView.ID_AUTOFILL, MENU_ITEM_ORDER_AUTOFILL, 2731 android.R.string.autofill) 2732 .setEnabled(mTextView.canRequestAutofill()) 2733 .setOnMenuItemClickListener(mOnContextMenuItemClickListener); 2734 2735 mPreserveSelection = true; 2736 } 2737 2738 @Nullable 2739 private SuggestionSpan findEquivalentSuggestionSpan( 2740 @NonNull SuggestionSpanInfo suggestionSpanInfo) { 2741 final Editable editable = (Editable) mTextView.getText(); 2742 if (editable.getSpanStart(suggestionSpanInfo.mSuggestionSpan) >= 0) { 2743 // Exactly same span is found. 2744 return suggestionSpanInfo.mSuggestionSpan; 2745 } 2746 // Suggestion span couldn't be found. Try to find a suggestion span that has the same 2747 // contents. 2748 final SuggestionSpan[] suggestionSpans = editable.getSpans(suggestionSpanInfo.mSpanStart, 2749 suggestionSpanInfo.mSpanEnd, SuggestionSpan.class); 2750 for (final SuggestionSpan suggestionSpan : suggestionSpans) { 2751 final int start = editable.getSpanStart(suggestionSpan); 2752 if (start != suggestionSpanInfo.mSpanStart) { 2753 continue; 2754 } 2755 final int end = editable.getSpanEnd(suggestionSpan); 2756 if (end != suggestionSpanInfo.mSpanEnd) { 2757 continue; 2758 } 2759 if (suggestionSpan.equals(suggestionSpanInfo.mSuggestionSpan)) { 2760 return suggestionSpan; 2761 } 2762 } 2763 return null; 2764 } 2765 2766 private void replaceWithSuggestion(@NonNull final SuggestionInfo suggestionInfo) { 2767 final SuggestionSpan targetSuggestionSpan = findEquivalentSuggestionSpan( 2768 suggestionInfo.mSuggestionSpanInfo); 2769 if (targetSuggestionSpan == null) { 2770 // Span has been removed 2771 return; 2772 } 2773 final Editable editable = (Editable) mTextView.getText(); 2774 final int spanStart = editable.getSpanStart(targetSuggestionSpan); 2775 final int spanEnd = editable.getSpanEnd(targetSuggestionSpan); 2776 if (spanStart < 0 || spanEnd <= spanStart) { 2777 // Span has been removed 2778 return; 2779 } 2780 2781 final String originalText = TextUtils.substring(editable, spanStart, spanEnd); 2782 // SuggestionSpans are removed by replace: save them before 2783 SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd, 2784 SuggestionSpan.class); 2785 final int length = suggestionSpans.length; 2786 int[] suggestionSpansStarts = new int[length]; 2787 int[] suggestionSpansEnds = new int[length]; 2788 int[] suggestionSpansFlags = new int[length]; 2789 for (int i = 0; i < length; i++) { 2790 final SuggestionSpan suggestionSpan = suggestionSpans[i]; 2791 suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan); 2792 suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan); 2793 suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan); 2794 2795 // Remove potential misspelled flags 2796 int suggestionSpanFlags = suggestionSpan.getFlags(); 2797 if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) != 0) { 2798 suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED; 2799 suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT; 2800 suggestionSpan.setFlags(suggestionSpanFlags); 2801 } 2802 } 2803 2804 // Notify source IME of the suggestion pick. Do this before swapping texts. 2805 targetSuggestionSpan.notifySelection( 2806 mTextView.getContext(), originalText, suggestionInfo.mSuggestionIndex); 2807 2808 // Swap text content between actual text and Suggestion span 2809 final int suggestionStart = suggestionInfo.mSuggestionStart; 2810 final int suggestionEnd = suggestionInfo.mSuggestionEnd; 2811 final String suggestion = suggestionInfo.mText.subSequence( 2812 suggestionStart, suggestionEnd).toString(); 2813 mTextView.replaceText_internal(spanStart, spanEnd, suggestion); 2814 2815 String[] suggestions = targetSuggestionSpan.getSuggestions(); 2816 suggestions[suggestionInfo.mSuggestionIndex] = originalText; 2817 2818 // Restore previous SuggestionSpans 2819 final int lengthDelta = suggestion.length() - (spanEnd - spanStart); 2820 for (int i = 0; i < length; i++) { 2821 // Only spans that include the modified region make sense after replacement 2822 // Spans partially included in the replaced region are removed, there is no 2823 // way to assign them a valid range after replacement 2824 if (suggestionSpansStarts[i] <= spanStart && suggestionSpansEnds[i] >= spanEnd) { 2825 mTextView.setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i], 2826 suggestionSpansEnds[i] + lengthDelta, suggestionSpansFlags[i]); 2827 } 2828 } 2829 // Move cursor at the end of the replaced word 2830 final int newCursorPosition = spanEnd + lengthDelta; 2831 mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); 2832 } 2833 2834 private final MenuItem.OnMenuItemClickListener mOnContextMenuItemClickListener = 2835 new MenuItem.OnMenuItemClickListener() { 2836 @Override 2837 public boolean onMenuItemClick(MenuItem item) { 2838 if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { 2839 return true; 2840 } 2841 return mTextView.onTextContextMenuItem(item.getItemId()); 2842 } 2843 }; 2844 2845 /** 2846 * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related 2847 * pop-up should be displayed. 2848 * Also monitors {@link Selection} to call back to the attached input method. 2849 */ 2850 private class SpanController implements SpanWatcher { 2851 2852 private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs 2853 2854 private EasyEditPopupWindow mPopupWindow; 2855 2856 private Runnable mHidePopup; 2857 2858 // This function is pure but inner classes can't have static functions 2859 private boolean isNonIntermediateSelectionSpan(final Spannable text, 2860 final Object span) { 2861 return (Selection.SELECTION_START == span || Selection.SELECTION_END == span) 2862 && (text.getSpanFlags(span) & Spanned.SPAN_INTERMEDIATE) == 0; 2863 } 2864 2865 @Override 2866 public void onSpanAdded(Spannable text, Object span, int start, int end) { 2867 if (isNonIntermediateSelectionSpan(text, span)) { 2868 sendUpdateSelection(); 2869 } else if (span instanceof EasyEditSpan) { 2870 if (mPopupWindow == null) { 2871 mPopupWindow = new EasyEditPopupWindow(); 2872 mHidePopup = new Runnable() { 2873 @Override 2874 public void run() { 2875 hide(); 2876 } 2877 }; 2878 } 2879 2880 // Make sure there is only at most one EasyEditSpan in the text 2881 if (mPopupWindow.mEasyEditSpan != null) { 2882 mPopupWindow.mEasyEditSpan.setDeleteEnabled(false); 2883 } 2884 2885 mPopupWindow.setEasyEditSpan((EasyEditSpan) span); 2886 mPopupWindow.setOnDeleteListener(new EasyEditDeleteListener() { 2887 @Override 2888 public void onDeleteClick(EasyEditSpan span) { 2889 Editable editable = (Editable) mTextView.getText(); 2890 int start = editable.getSpanStart(span); 2891 int end = editable.getSpanEnd(span); 2892 if (start >= 0 && end >= 0) { 2893 sendEasySpanNotification(EasyEditSpan.TEXT_DELETED, span); 2894 mTextView.deleteText_internal(start, end); 2895 } 2896 editable.removeSpan(span); 2897 } 2898 }); 2899 2900 if (mTextView.getWindowVisibility() != View.VISIBLE) { 2901 // The window is not visible yet, ignore the text change. 2902 return; 2903 } 2904 2905 if (mTextView.getLayout() == null) { 2906 // The view has not been laid out yet, ignore the text change 2907 return; 2908 } 2909 2910 if (extractedTextModeWillBeStarted()) { 2911 // The input is in extract mode. Do not handle the easy edit in 2912 // the original TextView, as the ExtractEditText will do 2913 return; 2914 } 2915 2916 mPopupWindow.show(); 2917 mTextView.removeCallbacks(mHidePopup); 2918 mTextView.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS); 2919 } 2920 } 2921 2922 @Override 2923 public void onSpanRemoved(Spannable text, Object span, int start, int end) { 2924 if (isNonIntermediateSelectionSpan(text, span)) { 2925 sendUpdateSelection(); 2926 } else if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { 2927 hide(); 2928 } 2929 } 2930 2931 @Override 2932 public void onSpanChanged(Spannable text, Object span, int previousStart, int previousEnd, 2933 int newStart, int newEnd) { 2934 if (isNonIntermediateSelectionSpan(text, span)) { 2935 sendUpdateSelection(); 2936 } else if (mPopupWindow != null && span instanceof EasyEditSpan) { 2937 EasyEditSpan easyEditSpan = (EasyEditSpan) span; 2938 sendEasySpanNotification(EasyEditSpan.TEXT_MODIFIED, easyEditSpan); 2939 text.removeSpan(easyEditSpan); 2940 } 2941 } 2942 2943 public void hide() { 2944 if (mPopupWindow != null) { 2945 mPopupWindow.hide(); 2946 mTextView.removeCallbacks(mHidePopup); 2947 } 2948 } 2949 2950 private void sendEasySpanNotification(int textChangedType, EasyEditSpan span) { 2951 try { 2952 PendingIntent pendingIntent = span.getPendingIntent(); 2953 if (pendingIntent != null) { 2954 Intent intent = new Intent(); 2955 intent.putExtra(EasyEditSpan.EXTRA_TEXT_CHANGED_TYPE, textChangedType); 2956 pendingIntent.send(mTextView.getContext(), 0, intent); 2957 } 2958 } catch (CanceledException e) { 2959 // This should not happen, as we should try to send the intent only once. 2960 Log.w(TAG, "PendingIntent for notification cannot be sent", e); 2961 } 2962 } 2963 } 2964 2965 /** 2966 * Listens for the delete event triggered by {@link EasyEditPopupWindow}. 2967 */ 2968 private interface EasyEditDeleteListener { 2969 2970 /** 2971 * Clicks the delete pop-up. 2972 */ 2973 void onDeleteClick(EasyEditSpan span); 2974 } 2975 2976 /** 2977 * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled 2978 * by {@link SpanController}. 2979 */ 2980 private class EasyEditPopupWindow extends PinnedPopupWindow 2981 implements OnClickListener { 2982 private static final int POPUP_TEXT_LAYOUT = 2983 com.android.internal.R.layout.text_edit_action_popup_text; 2984 private TextView mDeleteTextView; 2985 private EasyEditSpan mEasyEditSpan; 2986 private EasyEditDeleteListener mOnDeleteListener; 2987 2988 @Override 2989 protected void createPopupWindow() { 2990 mPopupWindow = new PopupWindow(mTextView.getContext(), null, 2991 com.android.internal.R.attr.textSelectHandleWindowStyle); 2992 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 2993 mPopupWindow.setClippingEnabled(true); 2994 } 2995 2996 @Override 2997 protected void initContentView() { 2998 LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); 2999 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 3000 mContentView = linearLayout; 3001 mContentView.setBackgroundResource( 3002 com.android.internal.R.drawable.text_edit_side_paste_window); 3003 3004 LayoutInflater inflater = (LayoutInflater) mTextView.getContext() 3005 .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 3006 3007 LayoutParams wrapContent = new LayoutParams( 3008 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 3009 3010 mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); 3011 mDeleteTextView.setLayoutParams(wrapContent); 3012 mDeleteTextView.setText(com.android.internal.R.string.delete); 3013 mDeleteTextView.setOnClickListener(this); 3014 mContentView.addView(mDeleteTextView); 3015 } 3016 3017 public void setEasyEditSpan(EasyEditSpan easyEditSpan) { 3018 mEasyEditSpan = easyEditSpan; 3019 } 3020 3021 private void setOnDeleteListener(EasyEditDeleteListener listener) { 3022 mOnDeleteListener = listener; 3023 } 3024 3025 @Override 3026 public void onClick(View view) { 3027 if (view == mDeleteTextView 3028 && mEasyEditSpan != null && mEasyEditSpan.isDeleteEnabled() 3029 && mOnDeleteListener != null) { 3030 mOnDeleteListener.onDeleteClick(mEasyEditSpan); 3031 } 3032 } 3033 3034 @Override 3035 public void hide() { 3036 if (mEasyEditSpan != null) { 3037 mEasyEditSpan.setDeleteEnabled(false); 3038 } 3039 mOnDeleteListener = null; 3040 super.hide(); 3041 } 3042 3043 @Override 3044 protected int getTextOffset() { 3045 // Place the pop-up at the end of the span 3046 Editable editable = (Editable) mTextView.getText(); 3047 return editable.getSpanEnd(mEasyEditSpan); 3048 } 3049 3050 @Override 3051 protected int getVerticalLocalPosition(int line) { 3052 final Layout layout = mTextView.getLayout(); 3053 return layout.getLineBottomWithoutSpacing(line); 3054 } 3055 3056 @Override 3057 protected int clipVertically(int positionY) { 3058 // As we display the pop-up below the span, no vertical clipping is required. 3059 return positionY; 3060 } 3061 } 3062 3063 private class PositionListener implements ViewTreeObserver.OnPreDrawListener { 3064 // 3 handles 3065 // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others) 3066 // 1 CursorAnchorInfoNotifier 3067 private static final int MAXIMUM_NUMBER_OF_LISTENERS = 7; 3068 private TextViewPositionListener[] mPositionListeners = 3069 new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS]; 3070 private boolean[] mCanMove = new boolean[MAXIMUM_NUMBER_OF_LISTENERS]; 3071 private boolean mPositionHasChanged = true; 3072 // Absolute position of the TextView with respect to its parent window 3073 private int mPositionX, mPositionY; 3074 private int mPositionXOnScreen, mPositionYOnScreen; 3075 private int mNumberOfListeners; 3076 private boolean mScrollHasChanged; 3077 final int[] mTempCoords = new int[2]; 3078 3079 public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) { 3080 if (mNumberOfListeners == 0) { 3081 updatePosition(); 3082 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 3083 vto.addOnPreDrawListener(this); 3084 } 3085 3086 int emptySlotIndex = -1; 3087 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 3088 TextViewPositionListener listener = mPositionListeners[i]; 3089 if (listener == positionListener) { 3090 return; 3091 } else if (emptySlotIndex < 0 && listener == null) { 3092 emptySlotIndex = i; 3093 } 3094 } 3095 3096 mPositionListeners[emptySlotIndex] = positionListener; 3097 mCanMove[emptySlotIndex] = canMove; 3098 mNumberOfListeners++; 3099 } 3100 3101 public void removeSubscriber(TextViewPositionListener positionListener) { 3102 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 3103 if (mPositionListeners[i] == positionListener) { 3104 mPositionListeners[i] = null; 3105 mNumberOfListeners--; 3106 break; 3107 } 3108 } 3109 3110 if (mNumberOfListeners == 0) { 3111 ViewTreeObserver vto = mTextView.getViewTreeObserver(); 3112 vto.removeOnPreDrawListener(this); 3113 } 3114 } 3115 3116 public int getPositionX() { 3117 return mPositionX; 3118 } 3119 3120 public int getPositionY() { 3121 return mPositionY; 3122 } 3123 3124 public int getPositionXOnScreen() { 3125 return mPositionXOnScreen; 3126 } 3127 3128 public int getPositionYOnScreen() { 3129 return mPositionYOnScreen; 3130 } 3131 3132 @Override 3133 public boolean onPreDraw() { 3134 updatePosition(); 3135 3136 for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { 3137 if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) { 3138 TextViewPositionListener positionListener = mPositionListeners[i]; 3139 if (positionListener != null) { 3140 positionListener.updatePosition(mPositionX, mPositionY, 3141 mPositionHasChanged, mScrollHasChanged); 3142 } 3143 } 3144 } 3145 3146 mScrollHasChanged = false; 3147 return true; 3148 } 3149 3150 private void updatePosition() { 3151 mTextView.getLocationInWindow(mTempCoords); 3152 3153 mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY; 3154 3155 mPositionX = mTempCoords[0]; 3156 mPositionY = mTempCoords[1]; 3157 3158 mTextView.getLocationOnScreen(mTempCoords); 3159 3160 mPositionXOnScreen = mTempCoords[0]; 3161 mPositionYOnScreen = mTempCoords[1]; 3162 } 3163 3164 public void onScrollChanged() { 3165 mScrollHasChanged = true; 3166 } 3167 } 3168 3169 private abstract class PinnedPopupWindow implements TextViewPositionListener { 3170 protected PopupWindow mPopupWindow; 3171 protected ViewGroup mContentView; 3172 int mPositionX, mPositionY; 3173 int mClippingLimitLeft, mClippingLimitRight; 3174 3175 protected abstract void createPopupWindow(); 3176 protected abstract void initContentView(); 3177 protected abstract int getTextOffset(); 3178 protected abstract int getVerticalLocalPosition(int line); 3179 protected abstract int clipVertically(int positionY); 3180 protected void setUp() { 3181 } 3182 3183 public PinnedPopupWindow() { 3184 // Due to calling subclass methods in base constructor, subclass constructor is not 3185 // called before subclass methods, e.g. createPopupWindow or initContentView. To give 3186 // a chance to initialize subclasses, call setUp() method here. 3187 // TODO: It is good to extract non trivial initialization code from constructor. 3188 setUp(); 3189 3190 createPopupWindow(); 3191 3192 mPopupWindow.setWindowLayoutType( 3193 WindowManager.LayoutParams.TYPE_APPLICATION_ABOVE_SUB_PANEL); 3194 mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 3195 mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 3196 3197 initContentView(); 3198 3199 LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 3200 ViewGroup.LayoutParams.WRAP_CONTENT); 3201 mContentView.setLayoutParams(wrapContent); 3202 3203 mPopupWindow.setContentView(mContentView); 3204 } 3205 3206 public void show() { 3207 getPositionListener().addSubscriber(this, false /* offset is fixed */); 3208 3209 computeLocalPosition(); 3210 3211 final PositionListener positionListener = getPositionListener(); 3212 updatePosition(positionListener.getPositionX(), positionListener.getPositionY()); 3213 } 3214 3215 protected void measureContent() { 3216 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3217 mContentView.measure( 3218 View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, 3219 View.MeasureSpec.AT_MOST), 3220 View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, 3221 View.MeasureSpec.AT_MOST)); 3222 } 3223 3224 /* The popup window will be horizontally centered on the getTextOffset() and vertically 3225 * positioned according to viewportToContentHorizontalOffset. 3226 * 3227 * This method assumes that mContentView has properly been measured from its content. */ 3228 private void computeLocalPosition() { 3229 measureContent(); 3230 final int width = mContentView.getMeasuredWidth(); 3231 final int offset = getTextOffset(); 3232 mPositionX = (int) (mTextView.getLayout().getPrimaryHorizontal(offset) - width / 2.0f); 3233 mPositionX += mTextView.viewportToContentHorizontalOffset(); 3234 3235 final int line = mTextView.getLayout().getLineForOffset(offset); 3236 mPositionY = getVerticalLocalPosition(line); 3237 mPositionY += mTextView.viewportToContentVerticalOffset(); 3238 } 3239 3240 private void updatePosition(int parentPositionX, int parentPositionY) { 3241 int positionX = parentPositionX + mPositionX; 3242 int positionY = parentPositionY + mPositionY; 3243 3244 positionY = clipVertically(positionY); 3245 3246 // Horizontal clipping 3247 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3248 final int width = mContentView.getMeasuredWidth(); 3249 positionX = Math.min( 3250 displayMetrics.widthPixels - width + mClippingLimitRight, positionX); 3251 positionX = Math.max(-mClippingLimitLeft, positionX); 3252 3253 if (isShowing()) { 3254 mPopupWindow.update(positionX, positionY, -1, -1); 3255 } else { 3256 mPopupWindow.showAtLocation(mTextView, Gravity.NO_GRAVITY, 3257 positionX, positionY); 3258 } 3259 } 3260 3261 public void hide() { 3262 if (!isShowing()) { 3263 return; 3264 } 3265 mPopupWindow.dismiss(); 3266 getPositionListener().removeSubscriber(this); 3267 } 3268 3269 @Override 3270 public void updatePosition(int parentPositionX, int parentPositionY, 3271 boolean parentPositionChanged, boolean parentScrolled) { 3272 // Either parentPositionChanged or parentScrolled is true, check if still visible 3273 if (isShowing() && isOffsetVisible(getTextOffset())) { 3274 if (parentScrolled) computeLocalPosition(); 3275 updatePosition(parentPositionX, parentPositionY); 3276 } else { 3277 hide(); 3278 } 3279 } 3280 3281 public boolean isShowing() { 3282 return mPopupWindow.isShowing(); 3283 } 3284 } 3285 3286 private static final class SuggestionInfo { 3287 // Range of actual suggestion within mText 3288 int mSuggestionStart, mSuggestionEnd; 3289 3290 // The SuggestionSpan that this TextView represents 3291 final SuggestionSpanInfo mSuggestionSpanInfo = new SuggestionSpanInfo(); 3292 3293 // The index of this suggestion inside suggestionSpan 3294 int mSuggestionIndex; 3295 3296 final SpannableStringBuilder mText = new SpannableStringBuilder(); 3297 3298 void clear() { 3299 mSuggestionSpanInfo.clear(); 3300 mText.clear(); 3301 } 3302 3303 // Utility method to set attributes about a SuggestionSpan. 3304 void setSpanInfo(SuggestionSpan span, int spanStart, int spanEnd) { 3305 mSuggestionSpanInfo.mSuggestionSpan = span; 3306 mSuggestionSpanInfo.mSpanStart = spanStart; 3307 mSuggestionSpanInfo.mSpanEnd = spanEnd; 3308 } 3309 } 3310 3311 private static final class SuggestionSpanInfo { 3312 // The SuggestionSpan; 3313 @Nullable 3314 SuggestionSpan mSuggestionSpan; 3315 3316 // The SuggestionSpan start position 3317 int mSpanStart; 3318 3319 // The SuggestionSpan end position 3320 int mSpanEnd; 3321 3322 void clear() { 3323 mSuggestionSpan = null; 3324 } 3325 } 3326 3327 private class SuggestionHelper { 3328 private final Comparator<SuggestionSpan> mSuggestionSpanComparator = 3329 new SuggestionSpanComparator(); 3330 private final HashMap<SuggestionSpan, Integer> mSpansLengths = 3331 new HashMap<SuggestionSpan, Integer>(); 3332 3333 private class SuggestionSpanComparator implements Comparator<SuggestionSpan> { 3334 public int compare(SuggestionSpan span1, SuggestionSpan span2) { 3335 final int flag1 = span1.getFlags(); 3336 final int flag2 = span2.getFlags(); 3337 if (flag1 != flag2) { 3338 // The order here should match what is used in updateDrawState 3339 final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 3340 final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; 3341 final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0; 3342 final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0; 3343 if (easy1 && !misspelled1) return -1; 3344 if (easy2 && !misspelled2) return 1; 3345 if (misspelled1) return -1; 3346 if (misspelled2) return 1; 3347 } 3348 3349 return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue(); 3350 } 3351 } 3352 3353 /** 3354 * Returns the suggestion spans that cover the current cursor position. The suggestion 3355 * spans are sorted according to the length of text that they are attached to. 3356 */ 3357 private SuggestionSpan[] getSortedSuggestionSpans() { 3358 int pos = mTextView.getSelectionStart(); 3359 Spannable spannable = (Spannable) mTextView.getText(); 3360 SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class); 3361 3362 mSpansLengths.clear(); 3363 for (SuggestionSpan suggestionSpan : suggestionSpans) { 3364 int start = spannable.getSpanStart(suggestionSpan); 3365 int end = spannable.getSpanEnd(suggestionSpan); 3366 mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start)); 3367 } 3368 3369 // The suggestions are sorted according to their types (easy correction first, then 3370 // misspelled) and to the length of the text that they cover (shorter first). 3371 Arrays.sort(suggestionSpans, mSuggestionSpanComparator); 3372 mSpansLengths.clear(); 3373 3374 return suggestionSpans; 3375 } 3376 3377 /** 3378 * Gets the SuggestionInfo list that contains suggestion information at the current cursor 3379 * position. 3380 * 3381 * @param suggestionInfos SuggestionInfo array the results will be set. 3382 * @param misspelledSpanInfo a struct the misspelled SuggestionSpan info will be set. 3383 * @return the number of suggestions actually fetched. 3384 */ 3385 public int getSuggestionInfo(SuggestionInfo[] suggestionInfos, 3386 @Nullable SuggestionSpanInfo misspelledSpanInfo) { 3387 final Spannable spannable = (Spannable) mTextView.getText(); 3388 final SuggestionSpan[] suggestionSpans = getSortedSuggestionSpans(); 3389 final int nbSpans = suggestionSpans.length; 3390 if (nbSpans == 0) return 0; 3391 3392 int numberOfSuggestions = 0; 3393 for (final SuggestionSpan suggestionSpan : suggestionSpans) { 3394 final int spanStart = spannable.getSpanStart(suggestionSpan); 3395 final int spanEnd = spannable.getSpanEnd(suggestionSpan); 3396 3397 if (misspelledSpanInfo != null 3398 && (suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) { 3399 misspelledSpanInfo.mSuggestionSpan = suggestionSpan; 3400 misspelledSpanInfo.mSpanStart = spanStart; 3401 misspelledSpanInfo.mSpanEnd = spanEnd; 3402 } 3403 3404 final String[] suggestions = suggestionSpan.getSuggestions(); 3405 final int nbSuggestions = suggestions.length; 3406 suggestionLoop: 3407 for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) { 3408 final String suggestion = suggestions[suggestionIndex]; 3409 for (int i = 0; i < numberOfSuggestions; i++) { 3410 final SuggestionInfo otherSuggestionInfo = suggestionInfos[i]; 3411 if (otherSuggestionInfo.mText.toString().equals(suggestion)) { 3412 final int otherSpanStart = 3413 otherSuggestionInfo.mSuggestionSpanInfo.mSpanStart; 3414 final int otherSpanEnd = 3415 otherSuggestionInfo.mSuggestionSpanInfo.mSpanEnd; 3416 if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) { 3417 continue suggestionLoop; 3418 } 3419 } 3420 } 3421 3422 SuggestionInfo suggestionInfo = suggestionInfos[numberOfSuggestions]; 3423 suggestionInfo.setSpanInfo(suggestionSpan, spanStart, spanEnd); 3424 suggestionInfo.mSuggestionIndex = suggestionIndex; 3425 suggestionInfo.mSuggestionStart = 0; 3426 suggestionInfo.mSuggestionEnd = suggestion.length(); 3427 suggestionInfo.mText.replace(0, suggestionInfo.mText.length(), suggestion); 3428 numberOfSuggestions++; 3429 if (numberOfSuggestions >= suggestionInfos.length) { 3430 return numberOfSuggestions; 3431 } 3432 } 3433 } 3434 return numberOfSuggestions; 3435 } 3436 } 3437 3438 @VisibleForTesting 3439 public class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener { 3440 private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE; 3441 3442 // Key of intent extras for inserting new word into user dictionary. 3443 private static final String USER_DICTIONARY_EXTRA_WORD = "word"; 3444 private static final String USER_DICTIONARY_EXTRA_LOCALE = "locale"; 3445 3446 private SuggestionInfo[] mSuggestionInfos; 3447 private int mNumberOfSuggestions; 3448 private boolean mCursorWasVisibleBeforeSuggestions; 3449 private boolean mIsShowingUp = false; 3450 private SuggestionAdapter mSuggestionsAdapter; 3451 private TextAppearanceSpan mHighlightSpan; // TODO: Make mHighlightSpan final. 3452 private TextView mAddToDictionaryButton; 3453 private TextView mDeleteButton; 3454 private ListView mSuggestionListView; 3455 private final SuggestionSpanInfo mMisspelledSpanInfo = new SuggestionSpanInfo(); 3456 private int mContainerMarginWidth; 3457 private int mContainerMarginTop; 3458 private LinearLayout mContainerView; 3459 private Context mContext; // TODO: Make mContext final. 3460 3461 private class CustomPopupWindow extends PopupWindow { 3462 3463 @Override 3464 public void dismiss() { 3465 if (!isShowing()) { 3466 return; 3467 } 3468 super.dismiss(); 3469 getPositionListener().removeSubscriber(SuggestionsPopupWindow.this); 3470 3471 // Safe cast since show() checks that mTextView.getText() is an Editable 3472 ((Spannable) mTextView.getText()).removeSpan(mSuggestionRangeSpan); 3473 3474 mTextView.setCursorVisible(mCursorWasVisibleBeforeSuggestions); 3475 if (hasInsertionController() && !extractedTextModeWillBeStarted()) { 3476 getInsertionController().show(); 3477 } 3478 } 3479 } 3480 3481 public SuggestionsPopupWindow() { 3482 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 3483 } 3484 3485 @Override 3486 protected void setUp() { 3487 mContext = applyDefaultTheme(mTextView.getContext()); 3488 mHighlightSpan = new TextAppearanceSpan(mContext, 3489 mTextView.mTextEditSuggestionHighlightStyle); 3490 } 3491 3492 private Context applyDefaultTheme(Context originalContext) { 3493 TypedArray a = originalContext.obtainStyledAttributes( 3494 new int[]{com.android.internal.R.attr.isLightTheme}); 3495 boolean isLightTheme = a.getBoolean(0, true); 3496 int themeId = isLightTheme ? R.style.ThemeOverlay_Material_Light 3497 : R.style.ThemeOverlay_Material_Dark; 3498 a.recycle(); 3499 return new ContextThemeWrapper(originalContext, themeId); 3500 } 3501 3502 @Override 3503 protected void createPopupWindow() { 3504 mPopupWindow = new CustomPopupWindow(); 3505 mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 3506 mPopupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT)); 3507 mPopupWindow.setFocusable(true); 3508 mPopupWindow.setClippingEnabled(false); 3509 } 3510 3511 @Override 3512 protected void initContentView() { 3513 final LayoutInflater inflater = (LayoutInflater) mContext.getSystemService( 3514 Context.LAYOUT_INFLATER_SERVICE); 3515 mContentView = (ViewGroup) inflater.inflate( 3516 mTextView.mTextEditSuggestionContainerLayout, null); 3517 3518 mContainerView = (LinearLayout) mContentView.findViewById( 3519 com.android.internal.R.id.suggestionWindowContainer); 3520 ViewGroup.MarginLayoutParams lp = 3521 (ViewGroup.MarginLayoutParams) mContainerView.getLayoutParams(); 3522 mContainerMarginWidth = lp.leftMargin + lp.rightMargin; 3523 mContainerMarginTop = lp.topMargin; 3524 mClippingLimitLeft = lp.leftMargin; 3525 mClippingLimitRight = lp.rightMargin; 3526 3527 mSuggestionListView = (ListView) mContentView.findViewById( 3528 com.android.internal.R.id.suggestionContainer); 3529 3530 mSuggestionsAdapter = new SuggestionAdapter(); 3531 mSuggestionListView.setAdapter(mSuggestionsAdapter); 3532 mSuggestionListView.setOnItemClickListener(this); 3533 3534 // Inflate the suggestion items once and for all. 3535 mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS]; 3536 for (int i = 0; i < mSuggestionInfos.length; i++) { 3537 mSuggestionInfos[i] = new SuggestionInfo(); 3538 } 3539 3540 mAddToDictionaryButton = (TextView) mContentView.findViewById( 3541 com.android.internal.R.id.addToDictionaryButton); 3542 mAddToDictionaryButton.setOnClickListener(new View.OnClickListener() { 3543 public void onClick(View v) { 3544 final SuggestionSpan misspelledSpan = 3545 findEquivalentSuggestionSpan(mMisspelledSpanInfo); 3546 if (misspelledSpan == null) { 3547 // Span has been removed. 3548 return; 3549 } 3550 final Editable editable = (Editable) mTextView.getText(); 3551 final int spanStart = editable.getSpanStart(misspelledSpan); 3552 final int spanEnd = editable.getSpanEnd(misspelledSpan); 3553 if (spanStart < 0 || spanEnd <= spanStart) { 3554 return; 3555 } 3556 final String originalText = TextUtils.substring(editable, spanStart, spanEnd); 3557 3558 final Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT); 3559 intent.putExtra(USER_DICTIONARY_EXTRA_WORD, originalText); 3560 intent.putExtra(USER_DICTIONARY_EXTRA_LOCALE, 3561 mTextView.getTextServicesLocale().toString()); 3562 intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); 3563 mTextView.getContext().startActivity(intent); 3564 // There is no way to know if the word was indeed added. Re-check. 3565 // TODO The ExtractEditText should remove the span in the original text instead 3566 editable.removeSpan(mMisspelledSpanInfo.mSuggestionSpan); 3567 Selection.setSelection(editable, spanEnd); 3568 updateSpellCheckSpans(spanStart, spanEnd, false); 3569 hideWithCleanUp(); 3570 } 3571 }); 3572 3573 mDeleteButton = (TextView) mContentView.findViewById( 3574 com.android.internal.R.id.deleteButton); 3575 mDeleteButton.setOnClickListener(new View.OnClickListener() { 3576 public void onClick(View v) { 3577 final Editable editable = (Editable) mTextView.getText(); 3578 3579 final int spanUnionStart = editable.getSpanStart(mSuggestionRangeSpan); 3580 int spanUnionEnd = editable.getSpanEnd(mSuggestionRangeSpan); 3581 if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) { 3582 // Do not leave two adjacent spaces after deletion, or one at beginning of 3583 // text 3584 if (spanUnionEnd < editable.length() 3585 && Character.isSpaceChar(editable.charAt(spanUnionEnd)) 3586 && (spanUnionStart == 0 3587 || Character.isSpaceChar( 3588 editable.charAt(spanUnionStart - 1)))) { 3589 spanUnionEnd = spanUnionEnd + 1; 3590 } 3591 mTextView.deleteText_internal(spanUnionStart, spanUnionEnd); 3592 } 3593 hideWithCleanUp(); 3594 } 3595 }); 3596 3597 } 3598 3599 public boolean isShowingUp() { 3600 return mIsShowingUp; 3601 } 3602 3603 public void onParentLostFocus() { 3604 mIsShowingUp = false; 3605 } 3606 3607 private class SuggestionAdapter extends BaseAdapter { 3608 private LayoutInflater mInflater = (LayoutInflater) mContext.getSystemService( 3609 Context.LAYOUT_INFLATER_SERVICE); 3610 3611 @Override 3612 public int getCount() { 3613 return mNumberOfSuggestions; 3614 } 3615 3616 @Override 3617 public Object getItem(int position) { 3618 return mSuggestionInfos[position]; 3619 } 3620 3621 @Override 3622 public long getItemId(int position) { 3623 return position; 3624 } 3625 3626 @Override 3627 public View getView(int position, View convertView, ViewGroup parent) { 3628 TextView textView = (TextView) convertView; 3629 3630 if (textView == null) { 3631 textView = (TextView) mInflater.inflate(mTextView.mTextEditSuggestionItemLayout, 3632 parent, false); 3633 } 3634 3635 final SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 3636 textView.setText(suggestionInfo.mText); 3637 return textView; 3638 } 3639 } 3640 3641 @VisibleForTesting 3642 public ViewGroup getContentViewForTesting() { 3643 return mContentView; 3644 } 3645 3646 @Override 3647 public void show() { 3648 if (!(mTextView.getText() instanceof Editable)) return; 3649 if (extractedTextModeWillBeStarted()) { 3650 return; 3651 } 3652 3653 if (updateSuggestions()) { 3654 mCursorWasVisibleBeforeSuggestions = mCursorVisible; 3655 mTextView.setCursorVisible(false); 3656 mIsShowingUp = true; 3657 super.show(); 3658 } 3659 } 3660 3661 @Override 3662 protected void measureContent() { 3663 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3664 final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec( 3665 displayMetrics.widthPixels, View.MeasureSpec.AT_MOST); 3666 final int verticalMeasure = View.MeasureSpec.makeMeasureSpec( 3667 displayMetrics.heightPixels, View.MeasureSpec.AT_MOST); 3668 3669 int width = 0; 3670 View view = null; 3671 for (int i = 0; i < mNumberOfSuggestions; i++) { 3672 view = mSuggestionsAdapter.getView(i, view, mContentView); 3673 view.getLayoutParams().width = LayoutParams.WRAP_CONTENT; 3674 view.measure(horizontalMeasure, verticalMeasure); 3675 width = Math.max(width, view.getMeasuredWidth()); 3676 } 3677 3678 if (mAddToDictionaryButton.getVisibility() != View.GONE) { 3679 mAddToDictionaryButton.measure(horizontalMeasure, verticalMeasure); 3680 width = Math.max(width, mAddToDictionaryButton.getMeasuredWidth()); 3681 } 3682 3683 mDeleteButton.measure(horizontalMeasure, verticalMeasure); 3684 width = Math.max(width, mDeleteButton.getMeasuredWidth()); 3685 3686 width += mContainerView.getPaddingLeft() + mContainerView.getPaddingRight() 3687 + mContainerMarginWidth; 3688 3689 // Enforce the width based on actual text widths 3690 mContentView.measure( 3691 View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY), 3692 verticalMeasure); 3693 3694 Drawable popupBackground = mPopupWindow.getBackground(); 3695 if (popupBackground != null) { 3696 if (mTempRect == null) mTempRect = new Rect(); 3697 popupBackground.getPadding(mTempRect); 3698 width += mTempRect.left + mTempRect.right; 3699 } 3700 mPopupWindow.setWidth(width); 3701 } 3702 3703 @Override 3704 protected int getTextOffset() { 3705 return (mTextView.getSelectionStart() + mTextView.getSelectionStart()) / 2; 3706 } 3707 3708 @Override 3709 protected int getVerticalLocalPosition(int line) { 3710 final Layout layout = mTextView.getLayout(); 3711 return layout.getLineBottomWithoutSpacing(line) - mContainerMarginTop; 3712 } 3713 3714 @Override 3715 protected int clipVertically(int positionY) { 3716 final int height = mContentView.getMeasuredHeight(); 3717 final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); 3718 return Math.min(positionY, displayMetrics.heightPixels - height); 3719 } 3720 3721 private void hideWithCleanUp() { 3722 for (final SuggestionInfo info : mSuggestionInfos) { 3723 info.clear(); 3724 } 3725 mMisspelledSpanInfo.clear(); 3726 hide(); 3727 } 3728 3729 private boolean updateSuggestions() { 3730 Spannable spannable = (Spannable) mTextView.getText(); 3731 mNumberOfSuggestions = 3732 mSuggestionHelper.getSuggestionInfo(mSuggestionInfos, mMisspelledSpanInfo); 3733 if (mNumberOfSuggestions == 0 && mMisspelledSpanInfo.mSuggestionSpan == null) { 3734 return false; 3735 } 3736 3737 int spanUnionStart = mTextView.getText().length(); 3738 int spanUnionEnd = 0; 3739 3740 for (int i = 0; i < mNumberOfSuggestions; i++) { 3741 final SuggestionSpanInfo spanInfo = mSuggestionInfos[i].mSuggestionSpanInfo; 3742 spanUnionStart = Math.min(spanUnionStart, spanInfo.mSpanStart); 3743 spanUnionEnd = Math.max(spanUnionEnd, spanInfo.mSpanEnd); 3744 } 3745 if (mMisspelledSpanInfo.mSuggestionSpan != null) { 3746 spanUnionStart = Math.min(spanUnionStart, mMisspelledSpanInfo.mSpanStart); 3747 spanUnionEnd = Math.max(spanUnionEnd, mMisspelledSpanInfo.mSpanEnd); 3748 } 3749 3750 for (int i = 0; i < mNumberOfSuggestions; i++) { 3751 highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd); 3752 } 3753 3754 // Make "Add to dictionary" item visible if there is a span with the misspelled flag 3755 int addToDictionaryButtonVisibility = View.GONE; 3756 if (mMisspelledSpanInfo.mSuggestionSpan != null) { 3757 if (mMisspelledSpanInfo.mSpanStart >= 0 3758 && mMisspelledSpanInfo.mSpanEnd > mMisspelledSpanInfo.mSpanStart) { 3759 addToDictionaryButtonVisibility = View.VISIBLE; 3760 } 3761 } 3762 mAddToDictionaryButton.setVisibility(addToDictionaryButtonVisibility); 3763 3764 if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan(); 3765 final int underlineColor; 3766 if (mNumberOfSuggestions != 0) { 3767 underlineColor = 3768 mSuggestionInfos[0].mSuggestionSpanInfo.mSuggestionSpan.getUnderlineColor(); 3769 } else { 3770 underlineColor = mMisspelledSpanInfo.mSuggestionSpan.getUnderlineColor(); 3771 } 3772 3773 if (underlineColor == 0) { 3774 // Fallback on the default highlight color when the first span does not provide one 3775 mSuggestionRangeSpan.setBackgroundColor(mTextView.mHighlightColor); 3776 } else { 3777 final float BACKGROUND_TRANSPARENCY = 0.4f; 3778 final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY); 3779 mSuggestionRangeSpan.setBackgroundColor( 3780 (underlineColor & 0x00FFFFFF) + (newAlpha << 24)); 3781 } 3782 spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd, 3783 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 3784 3785 mSuggestionsAdapter.notifyDataSetChanged(); 3786 return true; 3787 } 3788 3789 private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart, 3790 int unionEnd) { 3791 final Spannable text = (Spannable) mTextView.getText(); 3792 final int spanStart = suggestionInfo.mSuggestionSpanInfo.mSpanStart; 3793 final int spanEnd = suggestionInfo.mSuggestionSpanInfo.mSpanEnd; 3794 3795 // Adjust the start/end of the suggestion span 3796 suggestionInfo.mSuggestionStart = spanStart - unionStart; 3797 suggestionInfo.mSuggestionEnd = suggestionInfo.mSuggestionStart 3798 + suggestionInfo.mText.length(); 3799 3800 suggestionInfo.mText.setSpan(mHighlightSpan, 0, suggestionInfo.mText.length(), 3801 Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 3802 3803 // Add the text before and after the span. 3804 final String textAsString = text.toString(); 3805 suggestionInfo.mText.insert(0, textAsString.substring(unionStart, spanStart)); 3806 suggestionInfo.mText.append(textAsString.substring(spanEnd, unionEnd)); 3807 } 3808 3809 @Override 3810 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 3811 SuggestionInfo suggestionInfo = mSuggestionInfos[position]; 3812 replaceWithSuggestion(suggestionInfo); 3813 hideWithCleanUp(); 3814 } 3815 } 3816 3817 /** 3818 * An ActionMode Callback class that is used to provide actions while in text insertion or 3819 * selection mode. 3820 * 3821 * The default callback provides a subset of Select All, Cut, Copy, Paste, Share and Replace 3822 * actions, depending on which of these this TextView supports and the current selection. 3823 */ 3824 private class TextActionModeCallback extends ActionMode.Callback2 { 3825 private final Path mSelectionPath = new Path(); 3826 private final RectF mSelectionBounds = new RectF(); 3827 private final boolean mHasSelection; 3828 private final int mHandleHeight; 3829 private final Map<MenuItem, OnClickListener> mAssistClickHandlers = new HashMap<>(); 3830 3831 public TextActionModeCallback(boolean hasSelection) { 3832 mHasSelection = hasSelection; 3833 if (mHasSelection) { 3834 SelectionModifierCursorController selectionController = getSelectionController(); 3835 if (selectionController.mStartHandle == null) { 3836 // As these are for initializing selectionController, hide() must be called. 3837 selectionController.initDrawables(); 3838 selectionController.initHandles(); 3839 selectionController.hide(); 3840 } 3841 mHandleHeight = Math.max( 3842 mSelectHandleLeft.getMinimumHeight(), 3843 mSelectHandleRight.getMinimumHeight()); 3844 } else { 3845 InsertionPointCursorController insertionController = getInsertionController(); 3846 if (insertionController != null) { 3847 insertionController.getHandle(); 3848 mHandleHeight = mSelectHandleCenter.getMinimumHeight(); 3849 } else { 3850 mHandleHeight = 0; 3851 } 3852 } 3853 } 3854 3855 @Override 3856 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 3857 mAssistClickHandlers.clear(); 3858 3859 mode.setTitle(null); 3860 mode.setSubtitle(null); 3861 mode.setTitleOptionalHint(true); 3862 populateMenuWithItems(menu); 3863 3864 Callback customCallback = getCustomCallback(); 3865 if (customCallback != null) { 3866 if (!customCallback.onCreateActionMode(mode, menu)) { 3867 // The custom mode can choose to cancel the action mode, dismiss selection. 3868 Selection.setSelection((Spannable) mTextView.getText(), 3869 mTextView.getSelectionEnd()); 3870 return false; 3871 } 3872 } 3873 3874 if (mTextView.canProcessText()) { 3875 mProcessTextIntentActionsHandler.onInitializeMenu(menu); 3876 } 3877 3878 if (mHasSelection && !mTextView.hasTransientState()) { 3879 mTextView.setHasTransientState(true); 3880 } 3881 return true; 3882 } 3883 3884 private Callback getCustomCallback() { 3885 return mHasSelection 3886 ? mCustomSelectionActionModeCallback 3887 : mCustomInsertionActionModeCallback; 3888 } 3889 3890 private void populateMenuWithItems(Menu menu) { 3891 if (mTextView.canCut()) { 3892 menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, 3893 com.android.internal.R.string.cut) 3894 .setAlphabeticShortcut('x') 3895 .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3896 } 3897 3898 if (mTextView.canCopy()) { 3899 menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, 3900 com.android.internal.R.string.copy) 3901 .setAlphabeticShortcut('c') 3902 .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3903 } 3904 3905 if (mTextView.canPaste()) { 3906 menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, 3907 com.android.internal.R.string.paste) 3908 .setAlphabeticShortcut('v') 3909 .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3910 } 3911 3912 if (mTextView.canShare()) { 3913 menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, 3914 com.android.internal.R.string.share) 3915 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3916 } 3917 3918 if (mTextView.canRequestAutofill()) { 3919 final String selected = mTextView.getSelectedText(); 3920 if (selected == null || selected.isEmpty()) { 3921 menu.add(Menu.NONE, TextView.ID_AUTOFILL, MENU_ITEM_ORDER_AUTOFILL, 3922 com.android.internal.R.string.autofill) 3923 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 3924 } 3925 } 3926 3927 if (mTextView.canPasteAsPlainText()) { 3928 menu.add( 3929 Menu.NONE, 3930 TextView.ID_PASTE_AS_PLAIN_TEXT, 3931 MENU_ITEM_ORDER_PASTE_AS_PLAIN_TEXT, 3932 com.android.internal.R.string.paste_as_plain_text) 3933 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3934 } 3935 3936 updateSelectAllItem(menu); 3937 updateReplaceItem(menu); 3938 updateAssistMenuItems(menu); 3939 } 3940 3941 @Override 3942 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 3943 updateSelectAllItem(menu); 3944 updateReplaceItem(menu); 3945 updateAssistMenuItems(menu); 3946 3947 Callback customCallback = getCustomCallback(); 3948 if (customCallback != null) { 3949 return customCallback.onPrepareActionMode(mode, menu); 3950 } 3951 return true; 3952 } 3953 3954 private void updateSelectAllItem(Menu menu) { 3955 boolean canSelectAll = mTextView.canSelectAllText(); 3956 boolean selectAllItemExists = menu.findItem(TextView.ID_SELECT_ALL) != null; 3957 if (canSelectAll && !selectAllItemExists) { 3958 menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, 3959 com.android.internal.R.string.selectAll) 3960 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3961 } else if (!canSelectAll && selectAllItemExists) { 3962 menu.removeItem(TextView.ID_SELECT_ALL); 3963 } 3964 } 3965 3966 private void updateReplaceItem(Menu menu) { 3967 boolean canReplace = mTextView.isSuggestionsEnabled() && shouldOfferToShowSuggestions(); 3968 boolean replaceItemExists = menu.findItem(TextView.ID_REPLACE) != null; 3969 if (canReplace && !replaceItemExists) { 3970 menu.add(Menu.NONE, TextView.ID_REPLACE, MENU_ITEM_ORDER_REPLACE, 3971 com.android.internal.R.string.replace) 3972 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 3973 } else if (!canReplace && replaceItemExists) { 3974 menu.removeItem(TextView.ID_REPLACE); 3975 } 3976 } 3977 3978 private void updateAssistMenuItems(Menu menu) { 3979 clearAssistMenuItems(menu); 3980 if (!mTextView.isDeviceProvisioned()) { 3981 return; 3982 } 3983 final TextClassification textClassification = 3984 getSelectionActionModeHelper().getTextClassification(); 3985 if (textClassification == null) { 3986 return; 3987 } 3988 if (isValidAssistMenuItem( 3989 textClassification.getIcon(), 3990 textClassification.getLabel(), 3991 textClassification.getOnClickListener(), 3992 textClassification.getIntent())) { 3993 final MenuItem item = menu.add( 3994 TextView.ID_ASSIST, TextView.ID_ASSIST, MENU_ITEM_ORDER_ASSIST, 3995 textClassification.getLabel()) 3996 .setIcon(textClassification.getIcon()) 3997 .setIntent(textClassification.getIntent()); 3998 item.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); 3999 mAssistClickHandlers.put(item, textClassification.getOnClickListener()); 4000 } 4001 final int count = textClassification.getSecondaryActionsCount(); 4002 for (int i = 0; i < count; i++) { 4003 if (!isValidAssistMenuItem( 4004 textClassification.getSecondaryIcon(i), 4005 textClassification.getSecondaryLabel(i), 4006 textClassification.getSecondaryOnClickListener(i), 4007 textClassification.getSecondaryIntent(i))) { 4008 continue; 4009 } 4010 final int order = MENU_ITEM_ORDER_SECONDARY_ASSIST_ACTIONS_START + i; 4011 final MenuItem item = menu.add( 4012 TextView.ID_ASSIST, Menu.NONE, order, 4013 textClassification.getSecondaryLabel(i)) 4014 .setIcon(textClassification.getSecondaryIcon(i)) 4015 .setIntent(textClassification.getSecondaryIntent(i)); 4016 item.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 4017 mAssistClickHandlers.put(item, textClassification.getSecondaryOnClickListener(i)); 4018 } 4019 } 4020 4021 private void clearAssistMenuItems(Menu menu) { 4022 int i = 0; 4023 while (i < menu.size()) { 4024 final MenuItem menuItem = menu.getItem(i); 4025 if (menuItem.getGroupId() == TextView.ID_ASSIST) { 4026 menu.removeItem(menuItem.getItemId()); 4027 continue; 4028 } 4029 i++; 4030 } 4031 } 4032 4033 private boolean isValidAssistMenuItem( 4034 Drawable icon, CharSequence label, OnClickListener onClick, Intent intent) { 4035 final boolean hasUi = icon != null || !TextUtils.isEmpty(label); 4036 final boolean hasAction = onClick != null || isSupportedIntent(intent); 4037 return hasUi && hasAction; 4038 } 4039 4040 private boolean isSupportedIntent(Intent intent) { 4041 if (intent == null) { 4042 return false; 4043 } 4044 final Context context = mTextView.getContext(); 4045 final ResolveInfo info = context.getPackageManager().resolveActivity(intent, 0); 4046 final boolean samePackage = context.getPackageName().equals( 4047 info.activityInfo.packageName); 4048 if (samePackage) { 4049 return true; 4050 } 4051 4052 final boolean exported = info.activityInfo.exported; 4053 final boolean requiresPermission = info.activityInfo.permission != null; 4054 final boolean hasPermission = !requiresPermission 4055 || context.checkSelfPermission(info.activityInfo.permission) 4056 == PackageManager.PERMISSION_GRANTED; 4057 return exported && hasPermission; 4058 } 4059 4060 private boolean onAssistMenuItemClicked(MenuItem assistMenuItem) { 4061 Preconditions.checkArgument(assistMenuItem.getGroupId() == TextView.ID_ASSIST); 4062 4063 final TextClassification textClassification = 4064 getSelectionActionModeHelper().getTextClassification(); 4065 if (!mTextView.isDeviceProvisioned() || textClassification == null) { 4066 // No textClassification result to handle the click. Eat the click. 4067 return true; 4068 } 4069 4070 OnClickListener onClickListener = mAssistClickHandlers.get(assistMenuItem); 4071 if (onClickListener == null) { 4072 final Intent intent = assistMenuItem.getIntent(); 4073 if (intent != null) { 4074 onClickListener = TextClassification.createStartActivityOnClickListener( 4075 mTextView.getContext(), intent); 4076 } 4077 } 4078 if (onClickListener != null) { 4079 onClickListener.onClick(mTextView); 4080 stopTextActionMode(); 4081 } 4082 // We tried our best. 4083 return true; 4084 } 4085 4086 @Override 4087 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 4088 getSelectionActionModeHelper().onSelectionAction(item.getItemId()); 4089 4090 if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { 4091 return true; 4092 } 4093 Callback customCallback = getCustomCallback(); 4094 if (customCallback != null && customCallback.onActionItemClicked(mode, item)) { 4095 return true; 4096 } 4097 if (item.getGroupId() == TextView.ID_ASSIST && onAssistMenuItemClicked(item)) { 4098 return true; 4099 } 4100 return mTextView.onTextContextMenuItem(item.getItemId()); 4101 } 4102 4103 @Override 4104 public void onDestroyActionMode(ActionMode mode) { 4105 // Clear mTextActionMode not to recursively destroy action mode by clearing selection. 4106 getSelectionActionModeHelper().onDestroyActionMode(); 4107 mTextActionMode = null; 4108 Callback customCallback = getCustomCallback(); 4109 if (customCallback != null) { 4110 customCallback.onDestroyActionMode(mode); 4111 } 4112 4113 if (!mPreserveSelection) { 4114 /* 4115 * Leave current selection when we tentatively destroy action mode for the 4116 * selection. If we're detaching from a window, we'll bring back the selection 4117 * mode when (if) we get reattached. 4118 */ 4119 Selection.setSelection((Spannable) mTextView.getText(), 4120 mTextView.getSelectionEnd()); 4121 } 4122 4123 if (mSelectionModifierCursorController != null) { 4124 mSelectionModifierCursorController.hide(); 4125 } 4126 4127 mAssistClickHandlers.clear(); 4128 } 4129 4130 @Override 4131 public void onGetContentRect(ActionMode mode, View view, Rect outRect) { 4132 if (!view.equals(mTextView) || mTextView.getLayout() == null) { 4133 super.onGetContentRect(mode, view, outRect); 4134 return; 4135 } 4136 if (mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { 4137 // We have a selection. 4138 mSelectionPath.reset(); 4139 mTextView.getLayout().getSelectionPath( 4140 mTextView.getSelectionStart(), mTextView.getSelectionEnd(), mSelectionPath); 4141 mSelectionPath.computeBounds(mSelectionBounds, true); 4142 mSelectionBounds.bottom += mHandleHeight; 4143 } else { 4144 // We have a cursor. 4145 Layout layout = mTextView.getLayout(); 4146 int line = layout.getLineForOffset(mTextView.getSelectionStart()); 4147 float primaryHorizontal = clampHorizontalPosition(null, 4148 layout.getPrimaryHorizontal(mTextView.getSelectionStart())); 4149 mSelectionBounds.set( 4150 primaryHorizontal, 4151 layout.getLineTop(line), 4152 primaryHorizontal, 4153 layout.getLineBottom(line) - layout.getLineBottom(line) + mHandleHeight); 4154 } 4155 // Take TextView's padding and scroll into account. 4156 int textHorizontalOffset = mTextView.viewportToContentHorizontalOffset(); 4157 int textVerticalOffset = mTextView.viewportToContentVerticalOffset(); 4158 outRect.set( 4159 (int) Math.floor(mSelectionBounds.left + textHorizontalOffset), 4160 (int) Math.floor(mSelectionBounds.top + textVerticalOffset), 4161 (int) Math.ceil(mSelectionBounds.right + textHorizontalOffset), 4162 (int) Math.ceil(mSelectionBounds.bottom + textVerticalOffset)); 4163 } 4164 } 4165 4166 /** 4167 * A listener to call {@link InputMethodManager#updateCursorAnchorInfo(View, CursorAnchorInfo)} 4168 * while the input method is requesting the cursor/anchor position. Does nothing as long as 4169 * {@link InputMethodManager#isWatchingCursor(View)} returns false. 4170 */ 4171 private final class CursorAnchorInfoNotifier implements TextViewPositionListener { 4172 final CursorAnchorInfo.Builder mSelectionInfoBuilder = new CursorAnchorInfo.Builder(); 4173 final int[] mTmpIntOffset = new int[2]; 4174 final Matrix mViewToScreenMatrix = new Matrix(); 4175 4176 @Override 4177 public void updatePosition(int parentPositionX, int parentPositionY, 4178 boolean parentPositionChanged, boolean parentScrolled) { 4179 final InputMethodState ims = mInputMethodState; 4180 if (ims == null || ims.mBatchEditNesting > 0) { 4181 return; 4182 } 4183 final InputMethodManager imm = InputMethodManager.peekInstance(); 4184 if (null == imm) { 4185 return; 4186 } 4187 if (!imm.isActive(mTextView)) { 4188 return; 4189 } 4190 // Skip if the IME has not requested the cursor/anchor position. 4191 if (!imm.isCursorAnchorInfoEnabled()) { 4192 return; 4193 } 4194 Layout layout = mTextView.getLayout(); 4195 if (layout == null) { 4196 return; 4197 } 4198 4199 final CursorAnchorInfo.Builder builder = mSelectionInfoBuilder; 4200 builder.reset(); 4201 4202 final int selectionStart = mTextView.getSelectionStart(); 4203 builder.setSelectionRange(selectionStart, mTextView.getSelectionEnd()); 4204 4205 // Construct transformation matrix from view local coordinates to screen coordinates. 4206 mViewToScreenMatrix.set(mTextView.getMatrix()); 4207 mTextView.getLocationOnScreen(mTmpIntOffset); 4208 mViewToScreenMatrix.postTranslate(mTmpIntOffset[0], mTmpIntOffset[1]); 4209 builder.setMatrix(mViewToScreenMatrix); 4210 4211 final float viewportToContentHorizontalOffset = 4212 mTextView.viewportToContentHorizontalOffset(); 4213 final float viewportToContentVerticalOffset = 4214 mTextView.viewportToContentVerticalOffset(); 4215 4216 final CharSequence text = mTextView.getText(); 4217 if (text instanceof Spannable) { 4218 final Spannable sp = (Spannable) text; 4219 int composingTextStart = EditableInputConnection.getComposingSpanStart(sp); 4220 int composingTextEnd = EditableInputConnection.getComposingSpanEnd(sp); 4221 if (composingTextEnd < composingTextStart) { 4222 final int temp = composingTextEnd; 4223 composingTextEnd = composingTextStart; 4224 composingTextStart = temp; 4225 } 4226 final boolean hasComposingText = 4227 (0 <= composingTextStart) && (composingTextStart < composingTextEnd); 4228 if (hasComposingText) { 4229 final CharSequence composingText = text.subSequence(composingTextStart, 4230 composingTextEnd); 4231 builder.setComposingText(composingTextStart, composingText); 4232 mTextView.populateCharacterBounds(builder, composingTextStart, 4233 composingTextEnd, viewportToContentHorizontalOffset, 4234 viewportToContentVerticalOffset); 4235 } 4236 } 4237 4238 // Treat selectionStart as the insertion point. 4239 if (0 <= selectionStart) { 4240 final int offset = selectionStart; 4241 final int line = layout.getLineForOffset(offset); 4242 final float insertionMarkerX = layout.getPrimaryHorizontal(offset) 4243 + viewportToContentHorizontalOffset; 4244 final float insertionMarkerTop = layout.getLineTop(line) 4245 + viewportToContentVerticalOffset; 4246 final float insertionMarkerBaseline = layout.getLineBaseline(line) 4247 + viewportToContentVerticalOffset; 4248 final float insertionMarkerBottom = layout.getLineBottomWithoutSpacing(line) 4249 + viewportToContentVerticalOffset; 4250 final boolean isTopVisible = mTextView 4251 .isPositionVisible(insertionMarkerX, insertionMarkerTop); 4252 final boolean isBottomVisible = mTextView 4253 .isPositionVisible(insertionMarkerX, insertionMarkerBottom); 4254 int insertionMarkerFlags = 0; 4255 if (isTopVisible || isBottomVisible) { 4256 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; 4257 } 4258 if (!isTopVisible || !isBottomVisible) { 4259 insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; 4260 } 4261 if (layout.isRtlCharAt(offset)) { 4262 insertionMarkerFlags |= CursorAnchorInfo.FLAG_IS_RTL; 4263 } 4264 builder.setInsertionMarkerLocation(insertionMarkerX, insertionMarkerTop, 4265 insertionMarkerBaseline, insertionMarkerBottom, insertionMarkerFlags); 4266 } 4267 4268 imm.updateCursorAnchorInfo(mTextView, builder.build()); 4269 } 4270 } 4271 4272 @VisibleForTesting 4273 public abstract class HandleView extends View implements TextViewPositionListener { 4274 protected Drawable mDrawable; 4275 protected Drawable mDrawableLtr; 4276 protected Drawable mDrawableRtl; 4277 private final PopupWindow mContainer; 4278 // Position with respect to the parent TextView 4279 private int mPositionX, mPositionY; 4280 private boolean mIsDragging; 4281 // Offset from touch position to mPosition 4282 private float mTouchToWindowOffsetX, mTouchToWindowOffsetY; 4283 protected int mHotspotX; 4284 protected int mHorizontalGravity; 4285 // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up 4286 private float mTouchOffsetY; 4287 // Where the touch position should be on the handle to ensure a maximum cursor visibility 4288 private float mIdealVerticalOffset; 4289 // Parent's (TextView) previous position in window 4290 private int mLastParentX, mLastParentY; 4291 // Parent's (TextView) previous position on screen 4292 private int mLastParentXOnScreen, mLastParentYOnScreen; 4293 // Previous text character offset 4294 protected int mPreviousOffset = -1; 4295 // Previous text character offset 4296 private boolean mPositionHasChanged = true; 4297 // Minimum touch target size for handles 4298 private int mMinSize; 4299 // Indicates the line of text that the handle is on. 4300 protected int mPrevLine = UNSET_LINE; 4301 // Indicates the line of text that the user was touching. This can differ from mPrevLine 4302 // when selecting text when the handles jump to the end / start of words which may be on 4303 // a different line. 4304 protected int mPreviousLineTouched = UNSET_LINE; 4305 4306 private HandleView(Drawable drawableLtr, Drawable drawableRtl, final int id) { 4307 super(mTextView.getContext()); 4308 setId(id); 4309 mContainer = new PopupWindow(mTextView.getContext(), null, 4310 com.android.internal.R.attr.textSelectHandleWindowStyle); 4311 mContainer.setSplitTouchEnabled(true); 4312 mContainer.setClippingEnabled(false); 4313 mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); 4314 mContainer.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); 4315 mContainer.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); 4316 mContainer.setContentView(this); 4317 4318 mDrawableLtr = drawableLtr; 4319 mDrawableRtl = drawableRtl; 4320 mMinSize = mTextView.getContext().getResources().getDimensionPixelSize( 4321 com.android.internal.R.dimen.text_handle_min_size); 4322 4323 updateDrawable(); 4324 4325 final int handleHeight = getPreferredHeight(); 4326 mTouchOffsetY = -0.3f * handleHeight; 4327 mIdealVerticalOffset = 0.7f * handleHeight; 4328 } 4329 4330 public float getIdealVerticalOffset() { 4331 return mIdealVerticalOffset; 4332 } 4333 4334 protected void updateDrawable() { 4335 if (mIsDragging) { 4336 // Don't update drawable during dragging. 4337 return; 4338 } 4339 final Layout layout = mTextView.getLayout(); 4340 if (layout == null) { 4341 return; 4342 } 4343 final int offset = getCurrentCursorOffset(); 4344 final boolean isRtlCharAtOffset = isAtRtlRun(layout, offset); 4345 final Drawable oldDrawable = mDrawable; 4346 mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr; 4347 mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset); 4348 mHorizontalGravity = getHorizontalGravity(isRtlCharAtOffset); 4349 if (oldDrawable != mDrawable && isShowing()) { 4350 // Update popup window position. 4351 mPositionX = getCursorHorizontalPosition(layout, offset) - mHotspotX 4352 - getHorizontalOffset() + getCursorOffset(); 4353 mPositionX += mTextView.viewportToContentHorizontalOffset(); 4354 mPositionHasChanged = true; 4355 updatePosition(mLastParentX, mLastParentY, false, false); 4356 postInvalidate(); 4357 } 4358 } 4359 4360 protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun); 4361 protected abstract int getHorizontalGravity(boolean isRtlRun); 4362 4363 // Touch-up filter: number of previous positions remembered 4364 private static final int HISTORY_SIZE = 5; 4365 private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150; 4366 private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350; 4367 private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; 4368 private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; 4369 private int mPreviousOffsetIndex = 0; 4370 private int mNumberPreviousOffsets = 0; 4371 4372 private void startTouchUpFilter(int offset) { 4373 mNumberPreviousOffsets = 0; 4374 addPositionToTouchUpFilter(offset); 4375 } 4376 4377 private void addPositionToTouchUpFilter(int offset) { 4378 mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; 4379 mPreviousOffsets[mPreviousOffsetIndex] = offset; 4380 mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); 4381 mNumberPreviousOffsets++; 4382 } 4383 4384 private void filterOnTouchUp(boolean fromTouchScreen) { 4385 final long now = SystemClock.uptimeMillis(); 4386 int i = 0; 4387 int index = mPreviousOffsetIndex; 4388 final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); 4389 while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) { 4390 i++; 4391 index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; 4392 } 4393 4394 if (i > 0 && i < iMax 4395 && (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) { 4396 positionAtCursorOffset(mPreviousOffsets[index], false, fromTouchScreen); 4397 } 4398 } 4399 4400 public boolean offsetHasBeenChanged() { 4401 return mNumberPreviousOffsets > 1; 4402 } 4403 4404 @Override 4405 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4406 setMeasuredDimension(getPreferredWidth(), getPreferredHeight()); 4407 } 4408 4409 @Override 4410 public void invalidate() { 4411 super.invalidate(); 4412 if (isShowing()) { 4413 positionAtCursorOffset(getCurrentCursorOffset(), true, false); 4414 } 4415 }; 4416 4417 private int getPreferredWidth() { 4418 return Math.max(mDrawable.getIntrinsicWidth(), mMinSize); 4419 } 4420 4421 private int getPreferredHeight() { 4422 return Math.max(mDrawable.getIntrinsicHeight(), mMinSize); 4423 } 4424 4425 public void show() { 4426 if (isShowing()) return; 4427 4428 getPositionListener().addSubscriber(this, true /* local position may change */); 4429 4430 // Make sure the offset is always considered new, even when focusing at same position 4431 mPreviousOffset = -1; 4432 positionAtCursorOffset(getCurrentCursorOffset(), false, false); 4433 } 4434 4435 protected void dismiss() { 4436 mIsDragging = false; 4437 mContainer.dismiss(); 4438 onDetached(); 4439 } 4440 4441 public void hide() { 4442 dismiss(); 4443 4444 getPositionListener().removeSubscriber(this); 4445 } 4446 4447 public boolean isShowing() { 4448 return mContainer.isShowing(); 4449 } 4450 4451 private boolean isVisible() { 4452 // Always show a dragging handle. 4453 if (mIsDragging) { 4454 return true; 4455 } 4456 4457 if (mTextView.isInBatchEditMode()) { 4458 return false; 4459 } 4460 4461 return mTextView.isPositionVisible( 4462 mPositionX + mHotspotX + getHorizontalOffset(), mPositionY); 4463 } 4464 4465 public abstract int getCurrentCursorOffset(); 4466 4467 protected abstract void updateSelection(int offset); 4468 4469 protected abstract void updatePosition(float x, float y, boolean fromTouchScreen); 4470 4471 @MagnifierHandleTrigger 4472 protected abstract int getMagnifierHandleTrigger(); 4473 4474 protected boolean isAtRtlRun(@NonNull Layout layout, int offset) { 4475 return layout.isRtlCharAt(offset); 4476 } 4477 4478 @VisibleForTesting 4479 public float getHorizontal(@NonNull Layout layout, int offset) { 4480 return layout.getPrimaryHorizontal(offset); 4481 } 4482 4483 protected int getOffsetAtCoordinate(@NonNull Layout layout, int line, float x) { 4484 return mTextView.getOffsetAtCoordinate(line, x); 4485 } 4486 4487 /** 4488 * @param offset Cursor offset. Must be in [-1, length]. 4489 * @param forceUpdatePosition whether to force update the position. This should be true 4490 * when If the parent has been scrolled, for example. 4491 * @param fromTouchScreen {@code true} if the cursor is moved with motion events from the 4492 * touch screen. 4493 */ 4494 protected void positionAtCursorOffset(int offset, boolean forceUpdatePosition, 4495 boolean fromTouchScreen) { 4496 // A HandleView relies on the layout, which may be nulled by external methods 4497 Layout layout = mTextView.getLayout(); 4498 if (layout == null) { 4499 // Will update controllers' state, hiding them and stopping selection mode if needed 4500 prepareCursorControllers(); 4501 return; 4502 } 4503 layout = mTextView.getLayout(); 4504 4505 boolean offsetChanged = offset != mPreviousOffset; 4506 if (offsetChanged || forceUpdatePosition) { 4507 if (offsetChanged) { 4508 updateSelection(offset); 4509 if (fromTouchScreen && mHapticTextHandleEnabled) { 4510 mTextView.performHapticFeedback(HapticFeedbackConstants.TEXT_HANDLE_MOVE); 4511 } 4512 addPositionToTouchUpFilter(offset); 4513 } 4514 final int line = layout.getLineForOffset(offset); 4515 mPrevLine = line; 4516 4517 mPositionX = getCursorHorizontalPosition(layout, offset) - mHotspotX 4518 - getHorizontalOffset() + getCursorOffset(); 4519 mPositionY = layout.getLineBottomWithoutSpacing(line); 4520 4521 // Take TextView's padding and scroll into account. 4522 mPositionX += mTextView.viewportToContentHorizontalOffset(); 4523 mPositionY += mTextView.viewportToContentVerticalOffset(); 4524 4525 mPreviousOffset = offset; 4526 mPositionHasChanged = true; 4527 } 4528 } 4529 4530 /** 4531 * Return the clamped horizontal position for the cursor. 4532 * 4533 * @param layout Text layout. 4534 * @param offset Character offset for the cursor. 4535 * @return The clamped horizontal position for the cursor. 4536 */ 4537 int getCursorHorizontalPosition(Layout layout, int offset) { 4538 return (int) (getHorizontal(layout, offset) - 0.5f); 4539 } 4540 4541 @Override 4542 public void updatePosition(int parentPositionX, int parentPositionY, 4543 boolean parentPositionChanged, boolean parentScrolled) { 4544 positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled, false); 4545 if (parentPositionChanged || mPositionHasChanged) { 4546 if (mIsDragging) { 4547 // Update touchToWindow offset in case of parent scrolling while dragging 4548 if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) { 4549 mTouchToWindowOffsetX += parentPositionX - mLastParentX; 4550 mTouchToWindowOffsetY += parentPositionY - mLastParentY; 4551 mLastParentX = parentPositionX; 4552 mLastParentY = parentPositionY; 4553 } 4554 4555 onHandleMoved(); 4556 } 4557 4558 if (isVisible()) { 4559 // Transform to the window coordinates to follow the view tranformation. 4560 final int[] pts = { mPositionX + mHotspotX + getHorizontalOffset(), mPositionY}; 4561 mTextView.transformFromViewToWindowSpace(pts); 4562 pts[0] -= mHotspotX + getHorizontalOffset(); 4563 4564 if (isShowing()) { 4565 mContainer.update(pts[0], pts[1], -1, -1); 4566 } else { 4567 mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, pts[0], pts[1]); 4568 } 4569 } else { 4570 if (isShowing()) { 4571 dismiss(); 4572 } 4573 } 4574 4575 mPositionHasChanged = false; 4576 } 4577 } 4578 4579 @Override 4580 protected void onDraw(Canvas c) { 4581 final int drawWidth = mDrawable.getIntrinsicWidth(); 4582 final int left = getHorizontalOffset(); 4583 4584 mDrawable.setBounds(left, 0, left + drawWidth, mDrawable.getIntrinsicHeight()); 4585 mDrawable.draw(c); 4586 } 4587 4588 private int getHorizontalOffset() { 4589 final int width = getPreferredWidth(); 4590 final int drawWidth = mDrawable.getIntrinsicWidth(); 4591 final int left; 4592 switch (mHorizontalGravity) { 4593 case Gravity.LEFT: 4594 left = 0; 4595 break; 4596 default: 4597 case Gravity.CENTER: 4598 left = (width - drawWidth) / 2; 4599 break; 4600 case Gravity.RIGHT: 4601 left = width - drawWidth; 4602 break; 4603 } 4604 return left; 4605 } 4606 4607 protected int getCursorOffset() { 4608 return 0; 4609 } 4610 4611 protected final void showMagnifier() { 4612 if (mMagnifier == null) { 4613 return; 4614 } 4615 4616 final int trigger = getMagnifierHandleTrigger(); 4617 final int offset; 4618 switch (trigger) { 4619 case MagnifierHandleTrigger.INSERTION: // Fall through. 4620 case MagnifierHandleTrigger.SELECTION_START: 4621 offset = mTextView.getSelectionStart(); 4622 break; 4623 case MagnifierHandleTrigger.SELECTION_END: 4624 offset = mTextView.getSelectionEnd(); 4625 break; 4626 default: 4627 offset = -1; 4628 break; 4629 } 4630 4631 if (offset == -1) { 4632 dismissMagnifier(); 4633 } 4634 4635 final Layout layout = mTextView.getLayout(); 4636 final int lineNumber = layout.getLineForOffset(offset); 4637 // Horizontally snap to character offset. 4638 final float xPosInView = getHorizontal(mTextView.getLayout(), offset) 4639 + mTextView.getTotalPaddingLeft() - mTextView.getScrollX(); 4640 // Vertically snap to middle of current line. 4641 final float yPosInView = (mTextView.getLayout().getLineTop(lineNumber) 4642 + mTextView.getLayout().getLineBottom(lineNumber)) / 2.0f 4643 + mTextView.getTotalPaddingTop() - mTextView.getScrollY(); 4644 4645 suspendBlink(); 4646 mMagnifier.show(xPosInView, yPosInView); 4647 } 4648 4649 protected final void dismissMagnifier() { 4650 if (mMagnifier != null) { 4651 mMagnifier.dismiss(); 4652 resumeBlink(); 4653 } 4654 } 4655 4656 @Override 4657 public boolean onTouchEvent(MotionEvent ev) { 4658 updateFloatingToolbarVisibility(ev); 4659 4660 switch (ev.getActionMasked()) { 4661 case MotionEvent.ACTION_DOWN: { 4662 startTouchUpFilter(getCurrentCursorOffset()); 4663 4664 final PositionListener positionListener = getPositionListener(); 4665 mLastParentX = positionListener.getPositionX(); 4666 mLastParentY = positionListener.getPositionY(); 4667 mLastParentXOnScreen = positionListener.getPositionXOnScreen(); 4668 mLastParentYOnScreen = positionListener.getPositionYOnScreen(); 4669 4670 final float xInWindow = ev.getRawX() - mLastParentXOnScreen + mLastParentX; 4671 final float yInWindow = ev.getRawY() - mLastParentYOnScreen + mLastParentY; 4672 mTouchToWindowOffsetX = xInWindow - mPositionX; 4673 mTouchToWindowOffsetY = yInWindow - mPositionY; 4674 4675 mIsDragging = true; 4676 mPreviousLineTouched = UNSET_LINE; 4677 break; 4678 } 4679 4680 case MotionEvent.ACTION_MOVE: { 4681 final float xInWindow = ev.getRawX() - mLastParentXOnScreen + mLastParentX; 4682 final float yInWindow = ev.getRawY() - mLastParentYOnScreen + mLastParentY; 4683 4684 // Vertical hysteresis: vertical down movement tends to snap to ideal offset 4685 final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY; 4686 final float currentVerticalOffset = yInWindow - mPositionY - mLastParentY; 4687 float newVerticalOffset; 4688 if (previousVerticalOffset < mIdealVerticalOffset) { 4689 newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset); 4690 newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset); 4691 } else { 4692 newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset); 4693 newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset); 4694 } 4695 mTouchToWindowOffsetY = newVerticalOffset + mLastParentY; 4696 4697 final float newPosX = 4698 xInWindow - mTouchToWindowOffsetX + mHotspotX + getHorizontalOffset(); 4699 final float newPosY = yInWindow - mTouchToWindowOffsetY + mTouchOffsetY; 4700 4701 updatePosition(newPosX, newPosY, 4702 ev.isFromSource(InputDevice.SOURCE_TOUCHSCREEN)); 4703 break; 4704 } 4705 4706 case MotionEvent.ACTION_UP: 4707 filterOnTouchUp(ev.isFromSource(InputDevice.SOURCE_TOUCHSCREEN)); 4708 // Fall through. 4709 case MotionEvent.ACTION_CANCEL: 4710 mIsDragging = false; 4711 updateDrawable(); 4712 break; 4713 } 4714 return true; 4715 } 4716 4717 public boolean isDragging() { 4718 return mIsDragging; 4719 } 4720 4721 void onHandleMoved() {} 4722 4723 public void onDetached() {} 4724 } 4725 4726 private class InsertionHandleView extends HandleView { 4727 private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000; 4728 private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds 4729 4730 // Used to detect taps on the insertion handle, which will affect the insertion action mode 4731 private float mDownPositionX, mDownPositionY; 4732 private Runnable mHider; 4733 4734 public InsertionHandleView(Drawable drawable) { 4735 super(drawable, drawable, com.android.internal.R.id.insertion_handle); 4736 } 4737 4738 @Override 4739 public void show() { 4740 super.show(); 4741 4742 final long durationSinceCutOrCopy = 4743 SystemClock.uptimeMillis() - TextView.sLastCutCopyOrTextChangedTime; 4744 4745 // Cancel the single tap delayed runnable. 4746 if (mInsertionActionModeRunnable != null 4747 && ((mTapState == TAP_STATE_DOUBLE_TAP) 4748 || (mTapState == TAP_STATE_TRIPLE_CLICK) 4749 || isCursorInsideEasyCorrectionSpan())) { 4750 mTextView.removeCallbacks(mInsertionActionModeRunnable); 4751 } 4752 4753 // Prepare and schedule the single tap runnable to run exactly after the double tap 4754 // timeout has passed. 4755 if ((mTapState != TAP_STATE_DOUBLE_TAP) && (mTapState != TAP_STATE_TRIPLE_CLICK) 4756 && !isCursorInsideEasyCorrectionSpan() 4757 && (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION)) { 4758 if (mTextActionMode == null) { 4759 if (mInsertionActionModeRunnable == null) { 4760 mInsertionActionModeRunnable = new Runnable() { 4761 @Override 4762 public void run() { 4763 startInsertionActionMode(); 4764 } 4765 }; 4766 } 4767 mTextView.postDelayed( 4768 mInsertionActionModeRunnable, 4769 ViewConfiguration.getDoubleTapTimeout() + 1); 4770 } 4771 4772 } 4773 4774 hideAfterDelay(); 4775 } 4776 4777 private void hideAfterDelay() { 4778 if (mHider == null) { 4779 mHider = new Runnable() { 4780 public void run() { 4781 hide(); 4782 } 4783 }; 4784 } else { 4785 removeHiderCallback(); 4786 } 4787 mTextView.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT); 4788 } 4789 4790 private void removeHiderCallback() { 4791 if (mHider != null) { 4792 mTextView.removeCallbacks(mHider); 4793 } 4794 } 4795 4796 @Override 4797 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 4798 return drawable.getIntrinsicWidth() / 2; 4799 } 4800 4801 @Override 4802 protected int getHorizontalGravity(boolean isRtlRun) { 4803 return Gravity.CENTER_HORIZONTAL; 4804 } 4805 4806 @Override 4807 protected int getCursorOffset() { 4808 int offset = super.getCursorOffset(); 4809 if (mDrawableForCursor != null) { 4810 mDrawableForCursor.getPadding(mTempRect); 4811 offset += (mDrawableForCursor.getIntrinsicWidth() 4812 - mTempRect.left - mTempRect.right) / 2; 4813 } 4814 return offset; 4815 } 4816 4817 @Override 4818 int getCursorHorizontalPosition(Layout layout, int offset) { 4819 if (mDrawableForCursor != null) { 4820 final float horizontal = getHorizontal(layout, offset); 4821 return clampHorizontalPosition(mDrawableForCursor, horizontal) + mTempRect.left; 4822 } 4823 return super.getCursorHorizontalPosition(layout, offset); 4824 } 4825 4826 @Override 4827 public boolean onTouchEvent(MotionEvent ev) { 4828 final boolean result = super.onTouchEvent(ev); 4829 4830 switch (ev.getActionMasked()) { 4831 case MotionEvent.ACTION_DOWN: 4832 mDownPositionX = ev.getRawX(); 4833 mDownPositionY = ev.getRawY(); 4834 showMagnifier(); 4835 break; 4836 4837 case MotionEvent.ACTION_MOVE: 4838 showMagnifier(); 4839 break; 4840 4841 case MotionEvent.ACTION_UP: 4842 if (!offsetHasBeenChanged()) { 4843 final float deltaX = mDownPositionX - ev.getRawX(); 4844 final float deltaY = mDownPositionY - ev.getRawY(); 4845 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 4846 4847 final ViewConfiguration viewConfiguration = ViewConfiguration.get( 4848 mTextView.getContext()); 4849 final int touchSlop = viewConfiguration.getScaledTouchSlop(); 4850 4851 if (distanceSquared < touchSlop * touchSlop) { 4852 // Tapping on the handle toggles the insertion action mode. 4853 if (mTextActionMode != null) { 4854 stopTextActionMode(); 4855 } else { 4856 startInsertionActionMode(); 4857 } 4858 } 4859 } else { 4860 if (mTextActionMode != null) { 4861 mTextActionMode.invalidateContentRect(); 4862 } 4863 } 4864 // Fall through. 4865 case MotionEvent.ACTION_CANCEL: 4866 hideAfterDelay(); 4867 dismissMagnifier(); 4868 break; 4869 4870 default: 4871 break; 4872 } 4873 4874 return result; 4875 } 4876 4877 @Override 4878 public int getCurrentCursorOffset() { 4879 return mTextView.getSelectionStart(); 4880 } 4881 4882 @Override 4883 public void updateSelection(int offset) { 4884 Selection.setSelection((Spannable) mTextView.getText(), offset); 4885 } 4886 4887 @Override 4888 protected void updatePosition(float x, float y, boolean fromTouchScreen) { 4889 Layout layout = mTextView.getLayout(); 4890 int offset; 4891 if (layout != null) { 4892 if (mPreviousLineTouched == UNSET_LINE) { 4893 mPreviousLineTouched = mTextView.getLineAtCoordinate(y); 4894 } 4895 int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); 4896 offset = getOffsetAtCoordinate(layout, currLine, x); 4897 mPreviousLineTouched = currLine; 4898 } else { 4899 offset = -1; 4900 } 4901 positionAtCursorOffset(offset, false, fromTouchScreen); 4902 if (mTextActionMode != null) { 4903 invalidateActionMode(); 4904 } 4905 } 4906 4907 @Override 4908 void onHandleMoved() { 4909 super.onHandleMoved(); 4910 removeHiderCallback(); 4911 } 4912 4913 @Override 4914 public void onDetached() { 4915 super.onDetached(); 4916 removeHiderCallback(); 4917 } 4918 4919 @Override 4920 @MagnifierHandleTrigger 4921 protected int getMagnifierHandleTrigger() { 4922 return MagnifierHandleTrigger.INSERTION; 4923 } 4924 } 4925 4926 @Retention(RetentionPolicy.SOURCE) 4927 @IntDef(prefix = { "HANDLE_TYPE_" }, value = { 4928 HANDLE_TYPE_SELECTION_START, 4929 HANDLE_TYPE_SELECTION_END 4930 }) 4931 public @interface HandleType {} 4932 public static final int HANDLE_TYPE_SELECTION_START = 0; 4933 public static final int HANDLE_TYPE_SELECTION_END = 1; 4934 4935 /** For selection handles */ 4936 @VisibleForTesting 4937 public final class SelectionHandleView extends HandleView { 4938 // Indicates the handle type, selection start (HANDLE_TYPE_SELECTION_START) or selection 4939 // end (HANDLE_TYPE_SELECTION_END). 4940 @HandleType 4941 private final int mHandleType; 4942 // Indicates whether the cursor is making adjustments within a word. 4943 private boolean mInWord = false; 4944 // Difference between touch position and word boundary position. 4945 private float mTouchWordDelta; 4946 // X value of the previous updatePosition call. 4947 private float mPrevX; 4948 // Indicates if the handle has moved a boundary between LTR and RTL text. 4949 private boolean mLanguageDirectionChanged = false; 4950 // Distance from edge of horizontally scrolling text view 4951 // to use to switch to character mode. 4952 private final float mTextViewEdgeSlop; 4953 // Used to save text view location. 4954 private final int[] mTextViewLocation = new int[2]; 4955 4956 public SelectionHandleView(Drawable drawableLtr, Drawable drawableRtl, int id, 4957 @HandleType int handleType) { 4958 super(drawableLtr, drawableRtl, id); 4959 mHandleType = handleType; 4960 ViewConfiguration viewConfiguration = ViewConfiguration.get(mTextView.getContext()); 4961 mTextViewEdgeSlop = viewConfiguration.getScaledTouchSlop() * 4; 4962 } 4963 4964 private boolean isStartHandle() { 4965 return mHandleType == HANDLE_TYPE_SELECTION_START; 4966 } 4967 4968 @Override 4969 protected int getHotspotX(Drawable drawable, boolean isRtlRun) { 4970 if (isRtlRun == isStartHandle()) { 4971 return drawable.getIntrinsicWidth() / 4; 4972 } else { 4973 return (drawable.getIntrinsicWidth() * 3) / 4; 4974 } 4975 } 4976 4977 @Override 4978 protected int getHorizontalGravity(boolean isRtlRun) { 4979 return (isRtlRun == isStartHandle()) ? Gravity.LEFT : Gravity.RIGHT; 4980 } 4981 4982 @Override 4983 public int getCurrentCursorOffset() { 4984 return isStartHandle() ? mTextView.getSelectionStart() : mTextView.getSelectionEnd(); 4985 } 4986 4987 @Override 4988 protected void updateSelection(int offset) { 4989 if (isStartHandle()) { 4990 Selection.setSelection((Spannable) mTextView.getText(), offset, 4991 mTextView.getSelectionEnd()); 4992 } else { 4993 Selection.setSelection((Spannable) mTextView.getText(), 4994 mTextView.getSelectionStart(), offset); 4995 } 4996 updateDrawable(); 4997 if (mTextActionMode != null) { 4998 invalidateActionMode(); 4999 } 5000 } 5001 5002 @Override 5003 protected void updatePosition(float x, float y, boolean fromTouchScreen) { 5004 final Layout layout = mTextView.getLayout(); 5005 if (layout == null) { 5006 // HandleView will deal appropriately in positionAtCursorOffset when 5007 // layout is null. 5008 positionAndAdjustForCrossingHandles(mTextView.getOffsetForPosition(x, y), 5009 fromTouchScreen); 5010 return; 5011 } 5012 5013 if (mPreviousLineTouched == UNSET_LINE) { 5014 mPreviousLineTouched = mTextView.getLineAtCoordinate(y); 5015 } 5016 5017 boolean positionCursor = false; 5018 final int anotherHandleOffset = 5019 isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); 5020 int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); 5021 int initialOffset = getOffsetAtCoordinate(layout, currLine, x); 5022 5023 if (isStartHandle() && initialOffset >= anotherHandleOffset 5024 || !isStartHandle() && initialOffset <= anotherHandleOffset) { 5025 // Handles have crossed, bound it to the first selected line and 5026 // adjust by word / char as normal. 5027 currLine = layout.getLineForOffset(anotherHandleOffset); 5028 initialOffset = getOffsetAtCoordinate(layout, currLine, x); 5029 } 5030 5031 int offset = initialOffset; 5032 final int wordEnd = getWordEnd(offset); 5033 final int wordStart = getWordStart(offset); 5034 5035 if (mPrevX == UNSET_X_VALUE) { 5036 mPrevX = x; 5037 } 5038 5039 final int currentOffset = getCurrentCursorOffset(); 5040 final boolean rtlAtCurrentOffset = isAtRtlRun(layout, currentOffset); 5041 final boolean atRtl = isAtRtlRun(layout, offset); 5042 final boolean isLvlBoundary = layout.isLevelBoundary(offset); 5043 5044 // We can't determine if the user is expanding or shrinking the selection if they're 5045 // on a bi-di boundary, so until they've moved past the boundary we'll just place 5046 // the cursor at the current position. 5047 if (isLvlBoundary || (rtlAtCurrentOffset && !atRtl) || (!rtlAtCurrentOffset && atRtl)) { 5048 // We're on a boundary or this is the first direction change -- just update 5049 // to the current position. 5050 mLanguageDirectionChanged = true; 5051 mTouchWordDelta = 0.0f; 5052 positionAndAdjustForCrossingHandles(offset, fromTouchScreen); 5053 return; 5054 } else if (mLanguageDirectionChanged && !isLvlBoundary) { 5055 // We've just moved past the boundary so update the position. After this we can 5056 // figure out if the user is expanding or shrinking to go by word or character. 5057 positionAndAdjustForCrossingHandles(offset, fromTouchScreen); 5058 mTouchWordDelta = 0.0f; 5059 mLanguageDirectionChanged = false; 5060 return; 5061 } 5062 5063 boolean isExpanding; 5064 final float xDiff = x - mPrevX; 5065 if (isStartHandle()) { 5066 isExpanding = currLine < mPreviousLineTouched; 5067 } else { 5068 isExpanding = currLine > mPreviousLineTouched; 5069 } 5070 if (atRtl == isStartHandle()) { 5071 isExpanding |= xDiff > 0; 5072 } else { 5073 isExpanding |= xDiff < 0; 5074 } 5075 5076 if (mTextView.getHorizontallyScrolling()) { 5077 if (positionNearEdgeOfScrollingView(x, atRtl) 5078 && ((isStartHandle() && mTextView.getScrollX() != 0) 5079 || (!isStartHandle() 5080 && mTextView.canScrollHorizontally(atRtl ? -1 : 1))) 5081 && ((isExpanding && ((isStartHandle() && offset < currentOffset) 5082 || (!isStartHandle() && offset > currentOffset))) 5083 || !isExpanding)) { 5084 // If we're expanding ensure that the offset is actually expanding compared to 5085 // the current offset, if the handle snapped to the word, the finger position 5086 // may be out of sync and we don't want the selection to jump back. 5087 mTouchWordDelta = 0.0f; 5088 final int nextOffset = (atRtl == isStartHandle()) 5089 ? layout.getOffsetToRightOf(mPreviousOffset) 5090 : layout.getOffsetToLeftOf(mPreviousOffset); 5091 positionAndAdjustForCrossingHandles(nextOffset, fromTouchScreen); 5092 return; 5093 } 5094 } 5095 5096 if (isExpanding) { 5097 // User is increasing the selection. 5098 int wordBoundary = isStartHandle() ? wordStart : wordEnd; 5099 final boolean snapToWord = (!mInWord 5100 || (isStartHandle() ? currLine < mPrevLine : currLine > mPrevLine)) 5101 && atRtl == isAtRtlRun(layout, wordBoundary); 5102 if (snapToWord) { 5103 // Sometimes words can be broken across lines (Chinese, hyphenation). 5104 // We still snap to the word boundary but we only use the letters on the 5105 // current line to determine if the user is far enough into the word to snap. 5106 if (layout.getLineForOffset(wordBoundary) != currLine) { 5107 wordBoundary = isStartHandle() 5108 ? layout.getLineStart(currLine) : layout.getLineEnd(currLine); 5109 } 5110 final int offsetThresholdToSnap = isStartHandle() 5111 ? wordEnd - ((wordEnd - wordBoundary) / 2) 5112 : wordStart + ((wordBoundary - wordStart) / 2); 5113 if (isStartHandle() 5114 && (offset <= offsetThresholdToSnap || currLine < mPrevLine)) { 5115 // User is far enough into the word or on a different line so we expand by 5116 // word. 5117 offset = wordStart; 5118 } else if (!isStartHandle() 5119 && (offset >= offsetThresholdToSnap || currLine > mPrevLine)) { 5120 // User is far enough into the word or on a different line so we expand by 5121 // word. 5122 offset = wordEnd; 5123 } else { 5124 offset = mPreviousOffset; 5125 } 5126 } 5127 if ((isStartHandle() && offset < initialOffset) 5128 || (!isStartHandle() && offset > initialOffset)) { 5129 final float adjustedX = getHorizontal(layout, offset); 5130 mTouchWordDelta = 5131 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 5132 } else { 5133 mTouchWordDelta = 0.0f; 5134 } 5135 positionCursor = true; 5136 } else { 5137 final int adjustedOffset = 5138 getOffsetAtCoordinate(layout, currLine, x - mTouchWordDelta); 5139 final boolean shrinking = isStartHandle() 5140 ? adjustedOffset > mPreviousOffset || currLine > mPrevLine 5141 : adjustedOffset < mPreviousOffset || currLine < mPrevLine; 5142 if (shrinking) { 5143 // User is shrinking the selection. 5144 if (currLine != mPrevLine) { 5145 // We're on a different line, so we'll snap to word boundaries. 5146 offset = isStartHandle() ? wordStart : wordEnd; 5147 if ((isStartHandle() && offset < initialOffset) 5148 || (!isStartHandle() && offset > initialOffset)) { 5149 final float adjustedX = getHorizontal(layout, offset); 5150 mTouchWordDelta = 5151 mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; 5152 } else { 5153 mTouchWordDelta = 0.0f; 5154 } 5155 } else { 5156 offset = adjustedOffset; 5157 } 5158 positionCursor = true; 5159 } else if ((isStartHandle() && adjustedOffset < mPreviousOffset) 5160 || (!isStartHandle() && adjustedOffset > mPreviousOffset)) { 5161 // Handle has jumped to the word boundary, and the user is moving 5162 // their finger towards the handle, the delta should be updated. 5163 mTouchWordDelta = mTextView.convertToLocalHorizontalCoordinate(x) 5164 - getHorizontal(layout, mPreviousOffset); 5165 } 5166 } 5167 5168 if (positionCursor) { 5169 mPreviousLineTouched = currLine; 5170 positionAndAdjustForCrossingHandles(offset, fromTouchScreen); 5171 } 5172 mPrevX = x; 5173 } 5174 5175 @Override 5176 protected void positionAtCursorOffset(int offset, boolean forceUpdatePosition, 5177 boolean fromTouchScreen) { 5178 super.positionAtCursorOffset(offset, forceUpdatePosition, fromTouchScreen); 5179 mInWord = (offset != -1) && !getWordIteratorWithText().isBoundary(offset); 5180 } 5181 5182 @Override 5183 public boolean onTouchEvent(MotionEvent event) { 5184 boolean superResult = super.onTouchEvent(event); 5185 5186 switch (event.getActionMasked()) { 5187 case MotionEvent.ACTION_DOWN: 5188 // Reset the touch word offset and x value when the user 5189 // re-engages the handle. 5190 mTouchWordDelta = 0.0f; 5191 mPrevX = UNSET_X_VALUE; 5192 showMagnifier(); 5193 break; 5194 5195 case MotionEvent.ACTION_MOVE: 5196 showMagnifier(); 5197 break; 5198 5199 case MotionEvent.ACTION_UP: 5200 case MotionEvent.ACTION_CANCEL: 5201 dismissMagnifier(); 5202 break; 5203 } 5204 5205 return superResult; 5206 } 5207 5208 private void positionAndAdjustForCrossingHandles(int offset, boolean fromTouchScreen) { 5209 final int anotherHandleOffset = 5210 isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); 5211 if ((isStartHandle() && offset >= anotherHandleOffset) 5212 || (!isStartHandle() && offset <= anotherHandleOffset)) { 5213 mTouchWordDelta = 0.0f; 5214 final Layout layout = mTextView.getLayout(); 5215 if (layout != null && offset != anotherHandleOffset) { 5216 final float horiz = getHorizontal(layout, offset); 5217 final float anotherHandleHoriz = getHorizontal(layout, anotherHandleOffset, 5218 !isStartHandle()); 5219 final float currentHoriz = getHorizontal(layout, mPreviousOffset); 5220 if (currentHoriz < anotherHandleHoriz && horiz < anotherHandleHoriz 5221 || currentHoriz > anotherHandleHoriz && horiz > anotherHandleHoriz) { 5222 // This handle passes another one as it crossed a direction boundary. 5223 // Don't minimize the selection, but keep the handle at the run boundary. 5224 final int currentOffset = getCurrentCursorOffset(); 5225 final int offsetToGetRunRange = isStartHandle() 5226 ? currentOffset : Math.max(currentOffset - 1, 0); 5227 final long range = layout.getRunRange(offsetToGetRunRange); 5228 if (isStartHandle()) { 5229 offset = TextUtils.unpackRangeStartFromLong(range); 5230 } else { 5231 offset = TextUtils.unpackRangeEndFromLong(range); 5232 } 5233 positionAtCursorOffset(offset, false, fromTouchScreen); 5234 return; 5235 } 5236 } 5237 // Handles can not cross and selection is at least one character. 5238 offset = getNextCursorOffset(anotherHandleOffset, !isStartHandle()); 5239 } 5240 positionAtCursorOffset(offset, false, fromTouchScreen); 5241 } 5242 5243 private boolean positionNearEdgeOfScrollingView(float x, boolean atRtl) { 5244 mTextView.getLocationOnScreen(mTextViewLocation); 5245 boolean nearEdge; 5246 if (atRtl == isStartHandle()) { 5247 int rightEdge = mTextViewLocation[0] + mTextView.getWidth() 5248 - mTextView.getPaddingRight(); 5249 nearEdge = x > rightEdge - mTextViewEdgeSlop; 5250 } else { 5251 int leftEdge = mTextViewLocation[0] + mTextView.getPaddingLeft(); 5252 nearEdge = x < leftEdge + mTextViewEdgeSlop; 5253 } 5254 return nearEdge; 5255 } 5256 5257 @Override 5258 protected boolean isAtRtlRun(@NonNull Layout layout, int offset) { 5259 final int offsetToCheck = isStartHandle() ? offset : Math.max(offset - 1, 0); 5260 return layout.isRtlCharAt(offsetToCheck); 5261 } 5262 5263 @Override 5264 public float getHorizontal(@NonNull Layout layout, int offset) { 5265 return getHorizontal(layout, offset, isStartHandle()); 5266 } 5267 5268 private float getHorizontal(@NonNull Layout layout, int offset, boolean startHandle) { 5269 final int line = layout.getLineForOffset(offset); 5270 final int offsetToCheck = startHandle ? offset : Math.max(offset - 1, 0); 5271 final boolean isRtlChar = layout.isRtlCharAt(offsetToCheck); 5272 final boolean isRtlParagraph = layout.getParagraphDirection(line) == -1; 5273 return (isRtlChar == isRtlParagraph) 5274 ? layout.getPrimaryHorizontal(offset) : layout.getSecondaryHorizontal(offset); 5275 } 5276 5277 @Override 5278 protected int getOffsetAtCoordinate(@NonNull Layout layout, int line, float x) { 5279 final float localX = mTextView.convertToLocalHorizontalCoordinate(x); 5280 final int primaryOffset = layout.getOffsetForHorizontal(line, localX, true); 5281 if (!layout.isLevelBoundary(primaryOffset)) { 5282 return primaryOffset; 5283 } 5284 final int secondaryOffset = layout.getOffsetForHorizontal(line, localX, false); 5285 final int currentOffset = getCurrentCursorOffset(); 5286 final int primaryDiff = Math.abs(primaryOffset - currentOffset); 5287 final int secondaryDiff = Math.abs(secondaryOffset - currentOffset); 5288 if (primaryDiff < secondaryDiff) { 5289 return primaryOffset; 5290 } else if (primaryDiff > secondaryDiff) { 5291 return secondaryOffset; 5292 } else { 5293 final int offsetToCheck = isStartHandle() 5294 ? currentOffset : Math.max(currentOffset - 1, 0); 5295 final boolean isRtlChar = layout.isRtlCharAt(offsetToCheck); 5296 final boolean isRtlParagraph = layout.getParagraphDirection(line) == -1; 5297 return isRtlChar == isRtlParagraph ? primaryOffset : secondaryOffset; 5298 } 5299 } 5300 5301 @MagnifierHandleTrigger 5302 protected int getMagnifierHandleTrigger() { 5303 return isStartHandle() 5304 ? MagnifierHandleTrigger.SELECTION_START 5305 : MagnifierHandleTrigger.SELECTION_END; 5306 } 5307 } 5308 5309 private int getCurrentLineAdjustedForSlop(Layout layout, int prevLine, float y) { 5310 final int trueLine = mTextView.getLineAtCoordinate(y); 5311 if (layout == null || prevLine > layout.getLineCount() 5312 || layout.getLineCount() <= 0 || prevLine < 0) { 5313 // Invalid parameters, just return whatever line is at y. 5314 return trueLine; 5315 } 5316 5317 if (Math.abs(trueLine - prevLine) >= 2) { 5318 // Only stick to lines if we're within a line of the previous selection. 5319 return trueLine; 5320 } 5321 5322 final float verticalOffset = mTextView.viewportToContentVerticalOffset(); 5323 final int lineCount = layout.getLineCount(); 5324 final float slop = mTextView.getLineHeight() * LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS; 5325 5326 final float firstLineTop = layout.getLineTop(0) + verticalOffset; 5327 final float prevLineTop = layout.getLineTop(prevLine) + verticalOffset; 5328 final float yTopBound = Math.max(prevLineTop - slop, firstLineTop + slop); 5329 5330 final float lastLineBottom = layout.getLineBottom(lineCount - 1) + verticalOffset; 5331 final float prevLineBottom = layout.getLineBottom(prevLine) + verticalOffset; 5332 final float yBottomBound = Math.min(prevLineBottom + slop, lastLineBottom - slop); 5333 5334 // Determine if we've moved lines based on y position and previous line. 5335 int currLine; 5336 if (y <= yTopBound) { 5337 currLine = Math.max(prevLine - 1, 0); 5338 } else if (y >= yBottomBound) { 5339 currLine = Math.min(prevLine + 1, lineCount - 1); 5340 } else { 5341 currLine = prevLine; 5342 } 5343 return currLine; 5344 } 5345 5346 /** 5347 * A CursorController instance can be used to control a cursor in the text. 5348 */ 5349 private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { 5350 /** 5351 * Makes the cursor controller visible on screen. 5352 * See also {@link #hide()}. 5353 */ 5354 public void show(); 5355 5356 /** 5357 * Hide the cursor controller from screen. 5358 * See also {@link #show()}. 5359 */ 5360 public void hide(); 5361 5362 /** 5363 * Called when the view is detached from window. Perform house keeping task, such as 5364 * stopping Runnable thread that would otherwise keep a reference on the context, thus 5365 * preventing the activity from being recycled. 5366 */ 5367 public void onDetached(); 5368 5369 public boolean isCursorBeingModified(); 5370 5371 public boolean isActive(); 5372 } 5373 5374 private class InsertionPointCursorController implements CursorController { 5375 private InsertionHandleView mHandle; 5376 5377 public void show() { 5378 getHandle().show(); 5379 5380 if (mSelectionModifierCursorController != null) { 5381 mSelectionModifierCursorController.hide(); 5382 } 5383 } 5384 5385 public void hide() { 5386 if (mHandle != null) { 5387 mHandle.hide(); 5388 } 5389 } 5390 5391 public void onTouchModeChanged(boolean isInTouchMode) { 5392 if (!isInTouchMode) { 5393 hide(); 5394 } 5395 } 5396 5397 private InsertionHandleView getHandle() { 5398 if (mSelectHandleCenter == null) { 5399 mSelectHandleCenter = mTextView.getContext().getDrawable( 5400 mTextView.mTextSelectHandleRes); 5401 } 5402 if (mHandle == null) { 5403 mHandle = new InsertionHandleView(mSelectHandleCenter); 5404 } 5405 return mHandle; 5406 } 5407 5408 @Override 5409 public void onDetached() { 5410 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 5411 observer.removeOnTouchModeChangeListener(this); 5412 5413 if (mHandle != null) mHandle.onDetached(); 5414 } 5415 5416 @Override 5417 public boolean isCursorBeingModified() { 5418 return mHandle != null && mHandle.isDragging(); 5419 } 5420 5421 @Override 5422 public boolean isActive() { 5423 return mHandle != null && mHandle.isShowing(); 5424 } 5425 5426 public void invalidateHandle() { 5427 if (mHandle != null) { 5428 mHandle.invalidate(); 5429 } 5430 } 5431 } 5432 5433 class SelectionModifierCursorController implements CursorController { 5434 // The cursor controller handles, lazily created when shown. 5435 private SelectionHandleView mStartHandle; 5436 private SelectionHandleView mEndHandle; 5437 // The offsets of that last touch down event. Remembered to start selection there. 5438 private int mMinTouchOffset, mMaxTouchOffset; 5439 5440 private float mDownPositionX, mDownPositionY; 5441 private boolean mGestureStayedInTapRegion; 5442 5443 // Where the user first starts the drag motion. 5444 private int mStartOffset = -1; 5445 5446 private boolean mHaventMovedEnoughToStartDrag; 5447 // The line that a selection happened most recently with the drag accelerator. 5448 private int mLineSelectionIsOn = -1; 5449 // Whether the drag accelerator has selected past the initial line. 5450 private boolean mSwitchedLines = false; 5451 5452 // Indicates the drag accelerator mode that the user is currently using. 5453 private int mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; 5454 // Drag accelerator is inactive. 5455 private static final int DRAG_ACCELERATOR_MODE_INACTIVE = 0; 5456 // Character based selection by dragging. Only for mouse. 5457 private static final int DRAG_ACCELERATOR_MODE_CHARACTER = 1; 5458 // Word based selection by dragging. Enabled after long pressing or double tapping. 5459 private static final int DRAG_ACCELERATOR_MODE_WORD = 2; 5460 // Paragraph based selection by dragging. Enabled after mouse triple click. 5461 private static final int DRAG_ACCELERATOR_MODE_PARAGRAPH = 3; 5462 5463 SelectionModifierCursorController() { 5464 resetTouchOffsets(); 5465 } 5466 5467 public void show() { 5468 if (mTextView.isInBatchEditMode()) { 5469 return; 5470 } 5471 initDrawables(); 5472 initHandles(); 5473 } 5474 5475 private void initDrawables() { 5476 if (mSelectHandleLeft == null) { 5477 mSelectHandleLeft = mTextView.getContext().getDrawable( 5478 mTextView.mTextSelectHandleLeftRes); 5479 } 5480 if (mSelectHandleRight == null) { 5481 mSelectHandleRight = mTextView.getContext().getDrawable( 5482 mTextView.mTextSelectHandleRightRes); 5483 } 5484 } 5485 5486 private void initHandles() { 5487 // Lazy object creation has to be done before updatePosition() is called. 5488 if (mStartHandle == null) { 5489 mStartHandle = new SelectionHandleView(mSelectHandleLeft, mSelectHandleRight, 5490 com.android.internal.R.id.selection_start_handle, 5491 HANDLE_TYPE_SELECTION_START); 5492 } 5493 if (mEndHandle == null) { 5494 mEndHandle = new SelectionHandleView(mSelectHandleRight, mSelectHandleLeft, 5495 com.android.internal.R.id.selection_end_handle, 5496 HANDLE_TYPE_SELECTION_END); 5497 } 5498 5499 mStartHandle.show(); 5500 mEndHandle.show(); 5501 5502 hideInsertionPointCursorController(); 5503 } 5504 5505 public void hide() { 5506 if (mStartHandle != null) mStartHandle.hide(); 5507 if (mEndHandle != null) mEndHandle.hide(); 5508 } 5509 5510 public void enterDrag(int dragAcceleratorMode) { 5511 // Just need to init the handles / hide insertion cursor. 5512 show(); 5513 mDragAcceleratorMode = dragAcceleratorMode; 5514 // Start location of selection. 5515 mStartOffset = mTextView.getOffsetForPosition(mLastDownPositionX, 5516 mLastDownPositionY); 5517 mLineSelectionIsOn = mTextView.getLineAtCoordinate(mLastDownPositionY); 5518 // Don't show the handles until user has lifted finger. 5519 hide(); 5520 5521 // This stops scrolling parents from intercepting the touch event, allowing 5522 // the user to continue dragging across the screen to select text; TextView will 5523 // scroll as necessary. 5524 mTextView.getParent().requestDisallowInterceptTouchEvent(true); 5525 mTextView.cancelLongPress(); 5526 } 5527 5528 public void onTouchEvent(MotionEvent event) { 5529 // This is done even when the View does not have focus, so that long presses can start 5530 // selection and tap can move cursor from this tap position. 5531 final float eventX = event.getX(); 5532 final float eventY = event.getY(); 5533 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 5534 switch (event.getActionMasked()) { 5535 case MotionEvent.ACTION_DOWN: 5536 if (extractedTextModeWillBeStarted()) { 5537 // Prevent duplicating the selection handles until the mode starts. 5538 hide(); 5539 } else { 5540 // Remember finger down position, to be able to start selection from there. 5541 mMinTouchOffset = mMaxTouchOffset = mTextView.getOffsetForPosition( 5542 eventX, eventY); 5543 5544 // Double tap detection 5545 if (mGestureStayedInTapRegion) { 5546 if (mTapState == TAP_STATE_DOUBLE_TAP 5547 || mTapState == TAP_STATE_TRIPLE_CLICK) { 5548 final float deltaX = eventX - mDownPositionX; 5549 final float deltaY = eventY - mDownPositionY; 5550 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 5551 5552 ViewConfiguration viewConfiguration = ViewConfiguration.get( 5553 mTextView.getContext()); 5554 int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop(); 5555 boolean stayedInArea = 5556 distanceSquared < doubleTapSlop * doubleTapSlop; 5557 5558 if (stayedInArea && (isMouse || isPositionOnText(eventX, eventY))) { 5559 if (mTapState == TAP_STATE_DOUBLE_TAP) { 5560 selectCurrentWordAndStartDrag(); 5561 } else if (mTapState == TAP_STATE_TRIPLE_CLICK) { 5562 selectCurrentParagraphAndStartDrag(); 5563 } 5564 mDiscardNextActionUp = true; 5565 } 5566 } 5567 } 5568 5569 mDownPositionX = eventX; 5570 mDownPositionY = eventY; 5571 mGestureStayedInTapRegion = true; 5572 mHaventMovedEnoughToStartDrag = true; 5573 } 5574 break; 5575 5576 case MotionEvent.ACTION_POINTER_DOWN: 5577 case MotionEvent.ACTION_POINTER_UP: 5578 // Handle multi-point gestures. Keep min and max offset positions. 5579 // Only activated for devices that correctly handle multi-touch. 5580 if (mTextView.getContext().getPackageManager().hasSystemFeature( 5581 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { 5582 updateMinAndMaxOffsets(event); 5583 } 5584 break; 5585 5586 case MotionEvent.ACTION_MOVE: 5587 final ViewConfiguration viewConfig = ViewConfiguration.get( 5588 mTextView.getContext()); 5589 final int touchSlop = viewConfig.getScaledTouchSlop(); 5590 5591 if (mGestureStayedInTapRegion || mHaventMovedEnoughToStartDrag) { 5592 final float deltaX = eventX - mDownPositionX; 5593 final float deltaY = eventY - mDownPositionY; 5594 final float distanceSquared = deltaX * deltaX + deltaY * deltaY; 5595 5596 if (mGestureStayedInTapRegion) { 5597 int doubleTapTouchSlop = viewConfig.getScaledDoubleTapTouchSlop(); 5598 mGestureStayedInTapRegion = 5599 distanceSquared <= doubleTapTouchSlop * doubleTapTouchSlop; 5600 } 5601 if (mHaventMovedEnoughToStartDrag) { 5602 // We don't start dragging until the user has moved enough. 5603 mHaventMovedEnoughToStartDrag = 5604 distanceSquared <= touchSlop * touchSlop; 5605 } 5606 } 5607 5608 if (isMouse && !isDragAcceleratorActive()) { 5609 final int offset = mTextView.getOffsetForPosition(eventX, eventY); 5610 if (mTextView.hasSelection() 5611 && (!mHaventMovedEnoughToStartDrag || mStartOffset != offset) 5612 && offset >= mTextView.getSelectionStart() 5613 && offset <= mTextView.getSelectionEnd()) { 5614 startDragAndDrop(); 5615 break; 5616 } 5617 5618 if (mStartOffset != offset) { 5619 // Start character based drag accelerator. 5620 stopTextActionMode(); 5621 enterDrag(DRAG_ACCELERATOR_MODE_CHARACTER); 5622 mDiscardNextActionUp = true; 5623 mHaventMovedEnoughToStartDrag = false; 5624 } 5625 } 5626 5627 if (mStartHandle != null && mStartHandle.isShowing()) { 5628 // Don't do the drag if the handles are showing already. 5629 break; 5630 } 5631 5632 updateSelection(event); 5633 break; 5634 5635 case MotionEvent.ACTION_UP: 5636 if (!isDragAcceleratorActive()) { 5637 break; 5638 } 5639 updateSelection(event); 5640 5641 // No longer dragging to select text, let the parent intercept events. 5642 mTextView.getParent().requestDisallowInterceptTouchEvent(false); 5643 5644 // No longer the first dragging motion, reset. 5645 resetDragAcceleratorState(); 5646 5647 if (mTextView.hasSelection()) { 5648 // Drag selection should not be adjusted by the text classifier. 5649 startSelectionActionModeAsync(mHaventMovedEnoughToStartDrag); 5650 } 5651 break; 5652 } 5653 } 5654 5655 private void updateSelection(MotionEvent event) { 5656 if (mTextView.getLayout() != null) { 5657 switch (mDragAcceleratorMode) { 5658 case DRAG_ACCELERATOR_MODE_CHARACTER: 5659 updateCharacterBasedSelection(event); 5660 break; 5661 case DRAG_ACCELERATOR_MODE_WORD: 5662 updateWordBasedSelection(event); 5663 break; 5664 case DRAG_ACCELERATOR_MODE_PARAGRAPH: 5665 updateParagraphBasedSelection(event); 5666 break; 5667 } 5668 } 5669 } 5670 5671 /** 5672 * If the TextView allows text selection, selects the current paragraph and starts a drag. 5673 * 5674 * @return true if the drag was started. 5675 */ 5676 private boolean selectCurrentParagraphAndStartDrag() { 5677 if (mInsertionActionModeRunnable != null) { 5678 mTextView.removeCallbacks(mInsertionActionModeRunnable); 5679 } 5680 stopTextActionMode(); 5681 if (!selectCurrentParagraph()) { 5682 return false; 5683 } 5684 enterDrag(SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_PARAGRAPH); 5685 return true; 5686 } 5687 5688 private void updateCharacterBasedSelection(MotionEvent event) { 5689 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 5690 updateSelectionInternal(mStartOffset, offset, 5691 event.isFromSource(InputDevice.SOURCE_TOUCHSCREEN)); 5692 } 5693 5694 private void updateWordBasedSelection(MotionEvent event) { 5695 if (mHaventMovedEnoughToStartDrag) { 5696 return; 5697 } 5698 final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); 5699 final ViewConfiguration viewConfig = ViewConfiguration.get( 5700 mTextView.getContext()); 5701 final float eventX = event.getX(); 5702 final float eventY = event.getY(); 5703 final int currLine; 5704 if (isMouse) { 5705 // No need to offset the y coordinate for mouse input. 5706 currLine = mTextView.getLineAtCoordinate(eventY); 5707 } else { 5708 float y = eventY; 5709 if (mSwitchedLines) { 5710 // Offset the finger by the same vertical offset as the handles. 5711 // This improves visibility of the content being selected by 5712 // shifting the finger below the content, this is applied once 5713 // the user has switched lines. 5714 final int touchSlop = viewConfig.getScaledTouchSlop(); 5715 final float fingerOffset = (mStartHandle != null) 5716 ? mStartHandle.getIdealVerticalOffset() 5717 : touchSlop; 5718 y = eventY - fingerOffset; 5719 } 5720 5721 currLine = getCurrentLineAdjustedForSlop(mTextView.getLayout(), mLineSelectionIsOn, 5722 y); 5723 if (!mSwitchedLines && currLine != mLineSelectionIsOn) { 5724 // Break early here, we want to offset the finger position from 5725 // the selection highlight, once the user moved their finger 5726 // to a different line we should apply the offset and *not* switch 5727 // lines until recomputing the position with the finger offset. 5728 mSwitchedLines = true; 5729 return; 5730 } 5731 } 5732 5733 int startOffset; 5734 int offset = mTextView.getOffsetAtCoordinate(currLine, eventX); 5735 // Snap to word boundaries. 5736 if (mStartOffset < offset) { 5737 // Expanding with end handle. 5738 offset = getWordEnd(offset); 5739 startOffset = getWordStart(mStartOffset); 5740 } else { 5741 // Expanding with start handle. 5742 offset = getWordStart(offset); 5743 startOffset = getWordEnd(mStartOffset); 5744 if (startOffset == offset) { 5745 offset = getNextCursorOffset(offset, false); 5746 } 5747 } 5748 mLineSelectionIsOn = currLine; 5749 updateSelectionInternal(startOffset, offset, 5750 event.isFromSource(InputDevice.SOURCE_TOUCHSCREEN)); 5751 } 5752 5753 private void updateParagraphBasedSelection(MotionEvent event) { 5754 final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); 5755 5756 final int start = Math.min(offset, mStartOffset); 5757 final int end = Math.max(offset, mStartOffset); 5758 final long paragraphsRange = getParagraphsRange(start, end); 5759 final int selectionStart = TextUtils.unpackRangeStartFromLong(paragraphsRange); 5760 final int selectionEnd = TextUtils.unpackRangeEndFromLong(paragraphsRange); 5761 updateSelectionInternal(selectionStart, selectionEnd, 5762 event.isFromSource(InputDevice.SOURCE_TOUCHSCREEN)); 5763 } 5764 5765 private void updateSelectionInternal(int selectionStart, int selectionEnd, 5766 boolean fromTouchScreen) { 5767 final boolean performHapticFeedback = fromTouchScreen && mHapticTextHandleEnabled 5768 && ((mTextView.getSelectionStart() != selectionStart) 5769 || (mTextView.getSelectionEnd() != selectionEnd)); 5770 Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); 5771 if (performHapticFeedback) { 5772 mTextView.performHapticFeedback(HapticFeedbackConstants.TEXT_HANDLE_MOVE); 5773 } 5774 } 5775 5776 /** 5777 * @param event 5778 */ 5779 private void updateMinAndMaxOffsets(MotionEvent event) { 5780 int pointerCount = event.getPointerCount(); 5781 for (int index = 0; index < pointerCount; index++) { 5782 int offset = mTextView.getOffsetForPosition(event.getX(index), event.getY(index)); 5783 if (offset < mMinTouchOffset) mMinTouchOffset = offset; 5784 if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; 5785 } 5786 } 5787 5788 public int getMinTouchOffset() { 5789 return mMinTouchOffset; 5790 } 5791 5792 public int getMaxTouchOffset() { 5793 return mMaxTouchOffset; 5794 } 5795 5796 public void resetTouchOffsets() { 5797 mMinTouchOffset = mMaxTouchOffset = -1; 5798 resetDragAcceleratorState(); 5799 } 5800 5801 private void resetDragAcceleratorState() { 5802 mStartOffset = -1; 5803 mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; 5804 mSwitchedLines = false; 5805 final int selectionStart = mTextView.getSelectionStart(); 5806 final int selectionEnd = mTextView.getSelectionEnd(); 5807 if (selectionStart > selectionEnd) { 5808 Selection.setSelection((Spannable) mTextView.getText(), 5809 selectionEnd, selectionStart); 5810 } 5811 } 5812 5813 /** 5814 * @return true iff this controller is currently used to move the selection start. 5815 */ 5816 public boolean isSelectionStartDragged() { 5817 return mStartHandle != null && mStartHandle.isDragging(); 5818 } 5819 5820 @Override 5821 public boolean isCursorBeingModified() { 5822 return isDragAcceleratorActive() || isSelectionStartDragged() 5823 || (mEndHandle != null && mEndHandle.isDragging()); 5824 } 5825 5826 /** 5827 * @return true if the user is selecting text using the drag accelerator. 5828 */ 5829 public boolean isDragAcceleratorActive() { 5830 return mDragAcceleratorMode != DRAG_ACCELERATOR_MODE_INACTIVE; 5831 } 5832 5833 public void onTouchModeChanged(boolean isInTouchMode) { 5834 if (!isInTouchMode) { 5835 hide(); 5836 } 5837 } 5838 5839 @Override 5840 public void onDetached() { 5841 final ViewTreeObserver observer = mTextView.getViewTreeObserver(); 5842 observer.removeOnTouchModeChangeListener(this); 5843 5844 if (mStartHandle != null) mStartHandle.onDetached(); 5845 if (mEndHandle != null) mEndHandle.onDetached(); 5846 } 5847 5848 @Override 5849 public boolean isActive() { 5850 return mStartHandle != null && mStartHandle.isShowing(); 5851 } 5852 5853 public void invalidateHandles() { 5854 if (mStartHandle != null) { 5855 mStartHandle.invalidate(); 5856 } 5857 if (mEndHandle != null) { 5858 mEndHandle.invalidate(); 5859 } 5860 } 5861 } 5862 5863 private class CorrectionHighlighter { 5864 private final Path mPath = new Path(); 5865 private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 5866 private int mStart, mEnd; 5867 private long mFadingStartTime; 5868 private RectF mTempRectF; 5869 private static final int FADE_OUT_DURATION = 400; 5870 5871 public CorrectionHighlighter() { 5872 mPaint.setCompatibilityScaling( 5873 mTextView.getResources().getCompatibilityInfo().applicationScale); 5874 mPaint.setStyle(Paint.Style.FILL); 5875 } 5876 5877 public void highlight(CorrectionInfo info) { 5878 mStart = info.getOffset(); 5879 mEnd = mStart + info.getNewText().length(); 5880 mFadingStartTime = SystemClock.uptimeMillis(); 5881 5882 if (mStart < 0 || mEnd < 0) { 5883 stopAnimation(); 5884 } 5885 } 5886 5887 public void draw(Canvas canvas, int cursorOffsetVertical) { 5888 if (updatePath() && updatePaint()) { 5889 if (cursorOffsetVertical != 0) { 5890 canvas.translate(0, cursorOffsetVertical); 5891 } 5892 5893 canvas.drawPath(mPath, mPaint); 5894 5895 if (cursorOffsetVertical != 0) { 5896 canvas.translate(0, -cursorOffsetVertical); 5897 } 5898 invalidate(true); // TODO invalidate cursor region only 5899 } else { 5900 stopAnimation(); 5901 invalidate(false); // TODO invalidate cursor region only 5902 } 5903 } 5904 5905 private boolean updatePaint() { 5906 final long duration = SystemClock.uptimeMillis() - mFadingStartTime; 5907 if (duration > FADE_OUT_DURATION) return false; 5908 5909 final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; 5910 final int highlightColorAlpha = Color.alpha(mTextView.mHighlightColor); 5911 final int color = (mTextView.mHighlightColor & 0x00FFFFFF) 5912 + ((int) (highlightColorAlpha * coef) << 24); 5913 mPaint.setColor(color); 5914 return true; 5915 } 5916 5917 private boolean updatePath() { 5918 final Layout layout = mTextView.getLayout(); 5919 if (layout == null) return false; 5920 5921 // Update in case text is edited while the animation is run 5922 final int length = mTextView.getText().length(); 5923 int start = Math.min(length, mStart); 5924 int end = Math.min(length, mEnd); 5925 5926 mPath.reset(); 5927 layout.getSelectionPath(start, end, mPath); 5928 return true; 5929 } 5930 5931 private void invalidate(boolean delayed) { 5932 if (mTextView.getLayout() == null) return; 5933 5934 if (mTempRectF == null) mTempRectF = new RectF(); 5935 mPath.computeBounds(mTempRectF, false); 5936 5937 int left = mTextView.getCompoundPaddingLeft(); 5938 int top = mTextView.getExtendedPaddingTop() + mTextView.getVerticalOffset(true); 5939 5940 if (delayed) { 5941 mTextView.postInvalidateOnAnimation( 5942 left + (int) mTempRectF.left, top + (int) mTempRectF.top, 5943 left + (int) mTempRectF.right, top + (int) mTempRectF.bottom); 5944 } else { 5945 mTextView.postInvalidate((int) mTempRectF.left, (int) mTempRectF.top, 5946 (int) mTempRectF.right, (int) mTempRectF.bottom); 5947 } 5948 } 5949 5950 private void stopAnimation() { 5951 Editor.this.mCorrectionHighlighter = null; 5952 } 5953 } 5954 5955 private static class ErrorPopup extends PopupWindow { 5956 private boolean mAbove = false; 5957 private final TextView mView; 5958 private int mPopupInlineErrorBackgroundId = 0; 5959 private int mPopupInlineErrorAboveBackgroundId = 0; 5960 5961 ErrorPopup(TextView v, int width, int height) { 5962 super(v, width, height); 5963 mView = v; 5964 // Make sure the TextView has a background set as it will be used the first time it is 5965 // shown and positioned. Initialized with below background, which should have 5966 // dimensions identical to the above version for this to work (and is more likely). 5967 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 5968 com.android.internal.R.styleable.Theme_errorMessageBackground); 5969 mView.setBackgroundResource(mPopupInlineErrorBackgroundId); 5970 } 5971 5972 void fixDirection(boolean above) { 5973 mAbove = above; 5974 5975 if (above) { 5976 mPopupInlineErrorAboveBackgroundId = 5977 getResourceId(mPopupInlineErrorAboveBackgroundId, 5978 com.android.internal.R.styleable.Theme_errorMessageAboveBackground); 5979 } else { 5980 mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, 5981 com.android.internal.R.styleable.Theme_errorMessageBackground); 5982 } 5983 5984 mView.setBackgroundResource( 5985 above ? mPopupInlineErrorAboveBackgroundId : mPopupInlineErrorBackgroundId); 5986 } 5987 5988 private int getResourceId(int currentId, int index) { 5989 if (currentId == 0) { 5990 TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( 5991 R.styleable.Theme); 5992 currentId = styledAttributes.getResourceId(index, 0); 5993 styledAttributes.recycle(); 5994 } 5995 return currentId; 5996 } 5997 5998 @Override 5999 public void update(int x, int y, int w, int h, boolean force) { 6000 super.update(x, y, w, h, force); 6001 6002 boolean above = isAboveAnchor(); 6003 if (above != mAbove) { 6004 fixDirection(above); 6005 } 6006 } 6007 } 6008 6009 static class InputContentType { 6010 int imeOptions = EditorInfo.IME_NULL; 6011 String privateImeOptions; 6012 CharSequence imeActionLabel; 6013 int imeActionId; 6014 Bundle extras; 6015 OnEditorActionListener onEditorActionListener; 6016 boolean enterDown; 6017 LocaleList imeHintLocales; 6018 } 6019 6020 static class InputMethodState { 6021 ExtractedTextRequest mExtractedTextRequest; 6022 final ExtractedText mExtractedText = new ExtractedText(); 6023 int mBatchEditNesting; 6024 boolean mCursorChanged; 6025 boolean mSelectionModeChanged; 6026 boolean mContentChanged; 6027 int mChangedStart, mChangedEnd, mChangedDelta; 6028 } 6029 6030 /** 6031 * @return True iff (start, end) is a valid range within the text. 6032 */ 6033 private static boolean isValidRange(CharSequence text, int start, int end) { 6034 return 0 <= start && start <= end && end <= text.length(); 6035 } 6036 6037 @VisibleForTesting 6038 public SuggestionsPopupWindow getSuggestionsPopupWindowForTesting() { 6039 return mSuggestionsPopupWindow; 6040 } 6041 6042 /** 6043 * An InputFilter that monitors text input to maintain undo history. It does not modify the 6044 * text being typed (and hence always returns null from the filter() method). 6045 * 6046 * TODO: Make this span aware. 6047 */ 6048 public static class UndoInputFilter implements InputFilter { 6049 private final Editor mEditor; 6050 6051 // Whether the current filter pass is directly caused by an end-user text edit. 6052 private boolean mIsUserEdit; 6053 6054 // Whether the text field is handling an IME composition. Must be parceled in case the user 6055 // rotates the screen during composition. 6056 private boolean mHasComposition; 6057 6058 // Whether the user is expanding or shortening the text 6059 private boolean mExpanding; 6060 6061 // Whether the previous edit operation was in the current batch edit. 6062 private boolean mPreviousOperationWasInSameBatchEdit; 6063 6064 public UndoInputFilter(Editor editor) { 6065 mEditor = editor; 6066 } 6067 6068 public void saveInstanceState(Parcel parcel) { 6069 parcel.writeInt(mIsUserEdit ? 1 : 0); 6070 parcel.writeInt(mHasComposition ? 1 : 0); 6071 parcel.writeInt(mExpanding ? 1 : 0); 6072 parcel.writeInt(mPreviousOperationWasInSameBatchEdit ? 1 : 0); 6073 } 6074 6075 public void restoreInstanceState(Parcel parcel) { 6076 mIsUserEdit = parcel.readInt() != 0; 6077 mHasComposition = parcel.readInt() != 0; 6078 mExpanding = parcel.readInt() != 0; 6079 mPreviousOperationWasInSameBatchEdit = parcel.readInt() != 0; 6080 } 6081 6082 /** 6083 * Signals that a user-triggered edit is starting. 6084 */ 6085 public void beginBatchEdit() { 6086 if (DEBUG_UNDO) Log.d(TAG, "beginBatchEdit"); 6087 mIsUserEdit = true; 6088 } 6089 6090 public void endBatchEdit() { 6091 if (DEBUG_UNDO) Log.d(TAG, "endBatchEdit"); 6092 mIsUserEdit = false; 6093 mPreviousOperationWasInSameBatchEdit = false; 6094 } 6095 6096 @Override 6097 public CharSequence filter(CharSequence source, int start, int end, 6098 Spanned dest, int dstart, int dend) { 6099 if (DEBUG_UNDO) { 6100 Log.d(TAG, "filter: source=" + source + " (" + start + "-" + end + ") " 6101 + "dest=" + dest + " (" + dstart + "-" + dend + ")"); 6102 } 6103 6104 // Check to see if this edit should be tracked for undo. 6105 if (!canUndoEdit(source, start, end, dest, dstart, dend)) { 6106 return null; 6107 } 6108 6109 final boolean hadComposition = mHasComposition; 6110 mHasComposition = isComposition(source); 6111 final boolean wasExpanding = mExpanding; 6112 boolean shouldCreateSeparateState = false; 6113 if ((end - start) != (dend - dstart)) { 6114 mExpanding = (end - start) > (dend - dstart); 6115 if (hadComposition && mExpanding != wasExpanding) { 6116 shouldCreateSeparateState = true; 6117 } 6118 } 6119 6120 // Handle edit. 6121 handleEdit(source, start, end, dest, dstart, dend, shouldCreateSeparateState); 6122 return null; 6123 } 6124 6125 void freezeLastEdit() { 6126 mEditor.mUndoManager.beginUpdate("Edit text"); 6127 EditOperation lastEdit = getLastEdit(); 6128 if (lastEdit != null) { 6129 lastEdit.mFrozen = true; 6130 } 6131 mEditor.mUndoManager.endUpdate(); 6132 } 6133 6134 @Retention(RetentionPolicy.SOURCE) 6135 @IntDef(prefix = { "MERGE_EDIT_MODE_" }, value = { 6136 MERGE_EDIT_MODE_FORCE_MERGE, 6137 MERGE_EDIT_MODE_NEVER_MERGE, 6138 MERGE_EDIT_MODE_NORMAL 6139 }) 6140 private @interface MergeMode {} 6141 private static final int MERGE_EDIT_MODE_FORCE_MERGE = 0; 6142 private static final int MERGE_EDIT_MODE_NEVER_MERGE = 1; 6143 /** Use {@link EditOperation#mergeWith} to merge */ 6144 private static final int MERGE_EDIT_MODE_NORMAL = 2; 6145 6146 private void handleEdit(CharSequence source, int start, int end, 6147 Spanned dest, int dstart, int dend, boolean shouldCreateSeparateState) { 6148 // An application may install a TextWatcher to provide additional modifications after 6149 // the initial input filters run (e.g. a credit card formatter that adds spaces to a 6150 // string). This results in multiple filter() calls for what the user considers to be 6151 // a single operation. Always undo the whole set of changes in one step. 6152 @MergeMode 6153 final int mergeMode; 6154 if (isInTextWatcher() || mPreviousOperationWasInSameBatchEdit) { 6155 mergeMode = MERGE_EDIT_MODE_FORCE_MERGE; 6156 } else if (shouldCreateSeparateState) { 6157 mergeMode = MERGE_EDIT_MODE_NEVER_MERGE; 6158 } else { 6159 mergeMode = MERGE_EDIT_MODE_NORMAL; 6160 } 6161 // Build a new operation with all the information from this edit. 6162 String newText = TextUtils.substring(source, start, end); 6163 String oldText = TextUtils.substring(dest, dstart, dend); 6164 EditOperation edit = new EditOperation(mEditor, oldText, dstart, newText, 6165 mHasComposition); 6166 if (mHasComposition && TextUtils.equals(edit.mNewText, edit.mOldText)) { 6167 return; 6168 } 6169 recordEdit(edit, mergeMode); 6170 } 6171 6172 private EditOperation getLastEdit() { 6173 final UndoManager um = mEditor.mUndoManager; 6174 return um.getLastOperation( 6175 EditOperation.class, mEditor.mUndoOwner, UndoManager.MERGE_MODE_UNIQUE); 6176 } 6177 /** 6178 * Fetches the last undo operation and checks to see if a new edit should be merged into it. 6179 * If forceMerge is true then the new edit is always merged. 6180 */ 6181 private void recordEdit(EditOperation edit, @MergeMode int mergeMode) { 6182 // Fetch the last edit operation and attempt to merge in the new edit. 6183 final UndoManager um = mEditor.mUndoManager; 6184 um.beginUpdate("Edit text"); 6185 EditOperation lastEdit = getLastEdit(); 6186 if (lastEdit == null) { 6187 // Add this as the first edit. 6188 if (DEBUG_UNDO) Log.d(TAG, "filter: adding first op " + edit); 6189 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 6190 } else if (mergeMode == MERGE_EDIT_MODE_FORCE_MERGE) { 6191 // Forced merges take priority because they could be the result of a non-user-edit 6192 // change and this case should not create a new undo operation. 6193 if (DEBUG_UNDO) Log.d(TAG, "filter: force merge " + edit); 6194 lastEdit.forceMergeWith(edit); 6195 } else if (!mIsUserEdit) { 6196 // An application directly modified the Editable outside of a text edit. Treat this 6197 // as a new change and don't attempt to merge. 6198 if (DEBUG_UNDO) Log.d(TAG, "non-user edit, new op " + edit); 6199 um.commitState(mEditor.mUndoOwner); 6200 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 6201 } else if (mergeMode == MERGE_EDIT_MODE_NORMAL && lastEdit.mergeWith(edit)) { 6202 // Merge succeeded, nothing else to do. 6203 if (DEBUG_UNDO) Log.d(TAG, "filter: merge succeeded, created " + lastEdit); 6204 } else { 6205 // Could not merge with the last edit, so commit the last edit and add this edit. 6206 if (DEBUG_UNDO) Log.d(TAG, "filter: merge failed, adding " + edit); 6207 um.commitState(mEditor.mUndoOwner); 6208 um.addOperation(edit, UndoManager.MERGE_MODE_NONE); 6209 } 6210 mPreviousOperationWasInSameBatchEdit = mIsUserEdit; 6211 um.endUpdate(); 6212 } 6213 6214 private boolean canUndoEdit(CharSequence source, int start, int end, 6215 Spanned dest, int dstart, int dend) { 6216 if (!mEditor.mAllowUndo) { 6217 if (DEBUG_UNDO) Log.d(TAG, "filter: undo is disabled"); 6218 return false; 6219 } 6220 6221 if (mEditor.mUndoManager.isInUndo()) { 6222 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping, currently performing undo/redo"); 6223 return false; 6224 } 6225 6226 // Text filters run before input operations are applied. However, some input operations 6227 // are invalid and will throw exceptions when applied. This is common in tests. Don't 6228 // attempt to undo invalid operations. 6229 if (!isValidRange(source, start, end) || !isValidRange(dest, dstart, dend)) { 6230 if (DEBUG_UNDO) Log.d(TAG, "filter: invalid op"); 6231 return false; 6232 } 6233 6234 // Earlier filters can rewrite input to be a no-op, for example due to a length limit 6235 // on an input field. Skip no-op changes. 6236 if (start == end && dstart == dend) { 6237 if (DEBUG_UNDO) Log.d(TAG, "filter: skipping no-op"); 6238 return false; 6239 } 6240 6241 return true; 6242 } 6243 6244 private static boolean isComposition(CharSequence source) { 6245 if (!(source instanceof Spannable)) { 6246 return false; 6247 } 6248 // This is a composition edit if the source has a non-zero-length composing span. 6249 Spannable text = (Spannable) source; 6250 int composeBegin = EditableInputConnection.getComposingSpanStart(text); 6251 int composeEnd = EditableInputConnection.getComposingSpanEnd(text); 6252 return composeBegin < composeEnd; 6253 } 6254 6255 private boolean isInTextWatcher() { 6256 CharSequence text = mEditor.mTextView.getText(); 6257 return (text instanceof SpannableStringBuilder) 6258 && ((SpannableStringBuilder) text).getTextWatcherDepth() > 0; 6259 } 6260 } 6261 6262 /** 6263 * An operation to undo a single "edit" to a text view. 6264 */ 6265 public static class EditOperation extends UndoOperation<Editor> { 6266 private static final int TYPE_INSERT = 0; 6267 private static final int TYPE_DELETE = 1; 6268 private static final int TYPE_REPLACE = 2; 6269 6270 private int mType; 6271 private String mOldText; 6272 private String mNewText; 6273 private int mStart; 6274 6275 private int mOldCursorPos; 6276 private int mNewCursorPos; 6277 private boolean mFrozen; 6278 private boolean mIsComposition; 6279 6280 /** 6281 * Constructs an edit operation from a text input operation on editor that replaces the 6282 * oldText starting at dstart with newText. 6283 */ 6284 public EditOperation(Editor editor, String oldText, int dstart, String newText, 6285 boolean isComposition) { 6286 super(editor.mUndoOwner); 6287 mOldText = oldText; 6288 mNewText = newText; 6289 6290 // Determine the type of the edit. 6291 if (mNewText.length() > 0 && mOldText.length() == 0) { 6292 mType = TYPE_INSERT; 6293 } else if (mNewText.length() == 0 && mOldText.length() > 0) { 6294 mType = TYPE_DELETE; 6295 } else { 6296 mType = TYPE_REPLACE; 6297 } 6298 6299 mStart = dstart; 6300 // Store cursor data. 6301 mOldCursorPos = editor.mTextView.getSelectionStart(); 6302 mNewCursorPos = dstart + mNewText.length(); 6303 mIsComposition = isComposition; 6304 } 6305 6306 public EditOperation(Parcel src, ClassLoader loader) { 6307 super(src, loader); 6308 mType = src.readInt(); 6309 mOldText = src.readString(); 6310 mNewText = src.readString(); 6311 mStart = src.readInt(); 6312 mOldCursorPos = src.readInt(); 6313 mNewCursorPos = src.readInt(); 6314 mFrozen = src.readInt() == 1; 6315 mIsComposition = src.readInt() == 1; 6316 } 6317 6318 @Override 6319 public void writeToParcel(Parcel dest, int flags) { 6320 dest.writeInt(mType); 6321 dest.writeString(mOldText); 6322 dest.writeString(mNewText); 6323 dest.writeInt(mStart); 6324 dest.writeInt(mOldCursorPos); 6325 dest.writeInt(mNewCursorPos); 6326 dest.writeInt(mFrozen ? 1 : 0); 6327 dest.writeInt(mIsComposition ? 1 : 0); 6328 } 6329 6330 private int getNewTextEnd() { 6331 return mStart + mNewText.length(); 6332 } 6333 6334 private int getOldTextEnd() { 6335 return mStart + mOldText.length(); 6336 } 6337 6338 @Override 6339 public void commit() { 6340 } 6341 6342 @Override 6343 public void undo() { 6344 if (DEBUG_UNDO) Log.d(TAG, "undo"); 6345 // Remove the new text and insert the old. 6346 Editor editor = getOwnerData(); 6347 Editable text = (Editable) editor.mTextView.getText(); 6348 modifyText(text, mStart, getNewTextEnd(), mOldText, mStart, mOldCursorPos); 6349 } 6350 6351 @Override 6352 public void redo() { 6353 if (DEBUG_UNDO) Log.d(TAG, "redo"); 6354 // Remove the old text and insert the new. 6355 Editor editor = getOwnerData(); 6356 Editable text = (Editable) editor.mTextView.getText(); 6357 modifyText(text, mStart, getOldTextEnd(), mNewText, mStart, mNewCursorPos); 6358 } 6359 6360 /** 6361 * Attempts to merge this existing operation with a new edit. 6362 * @param edit The new edit operation. 6363 * @return If the merge succeeded, returns true. Otherwise returns false and leaves this 6364 * object unchanged. 6365 */ 6366 private boolean mergeWith(EditOperation edit) { 6367 if (DEBUG_UNDO) { 6368 Log.d(TAG, "mergeWith old " + this); 6369 Log.d(TAG, "mergeWith new " + edit); 6370 } 6371 6372 if (mFrozen) { 6373 return false; 6374 } 6375 6376 switch (mType) { 6377 case TYPE_INSERT: 6378 return mergeInsertWith(edit); 6379 case TYPE_DELETE: 6380 return mergeDeleteWith(edit); 6381 case TYPE_REPLACE: 6382 return mergeReplaceWith(edit); 6383 default: 6384 return false; 6385 } 6386 } 6387 6388 private boolean mergeInsertWith(EditOperation edit) { 6389 if (edit.mType == TYPE_INSERT) { 6390 // Merge insertions that are contiguous even when it's frozen. 6391 if (getNewTextEnd() != edit.mStart) { 6392 return false; 6393 } 6394 mNewText += edit.mNewText; 6395 mNewCursorPos = edit.mNewCursorPos; 6396 mFrozen = edit.mFrozen; 6397 mIsComposition = edit.mIsComposition; 6398 return true; 6399 } 6400 if (mIsComposition && edit.mType == TYPE_REPLACE 6401 && mStart <= edit.mStart && getNewTextEnd() >= edit.getOldTextEnd()) { 6402 // Merge insertion with replace as they can be single insertion. 6403 mNewText = mNewText.substring(0, edit.mStart - mStart) + edit.mNewText 6404 + mNewText.substring(edit.getOldTextEnd() - mStart, mNewText.length()); 6405 mNewCursorPos = edit.mNewCursorPos; 6406 mIsComposition = edit.mIsComposition; 6407 return true; 6408 } 6409 return false; 6410 } 6411 6412 // TODO: Support forward delete. 6413 private boolean mergeDeleteWith(EditOperation edit) { 6414 // Only merge continuous deletes. 6415 if (edit.mType != TYPE_DELETE) { 6416 return false; 6417 } 6418 // Only merge deletions that are contiguous. 6419 if (mStart != edit.getOldTextEnd()) { 6420 return false; 6421 } 6422 mStart = edit.mStart; 6423 mOldText = edit.mOldText + mOldText; 6424 mNewCursorPos = edit.mNewCursorPos; 6425 mIsComposition = edit.mIsComposition; 6426 return true; 6427 } 6428 6429 private boolean mergeReplaceWith(EditOperation edit) { 6430 if (edit.mType == TYPE_INSERT && getNewTextEnd() == edit.mStart) { 6431 // Merge with adjacent insert. 6432 mNewText += edit.mNewText; 6433 mNewCursorPos = edit.mNewCursorPos; 6434 return true; 6435 } 6436 if (!mIsComposition) { 6437 return false; 6438 } 6439 if (edit.mType == TYPE_DELETE && mStart <= edit.mStart 6440 && getNewTextEnd() >= edit.getOldTextEnd()) { 6441 // Merge with delete as they can be single operation. 6442 mNewText = mNewText.substring(0, edit.mStart - mStart) 6443 + mNewText.substring(edit.getOldTextEnd() - mStart, mNewText.length()); 6444 if (mNewText.isEmpty()) { 6445 mType = TYPE_DELETE; 6446 } 6447 mNewCursorPos = edit.mNewCursorPos; 6448 mIsComposition = edit.mIsComposition; 6449 return true; 6450 } 6451 if (edit.mType == TYPE_REPLACE && mStart == edit.mStart 6452 && TextUtils.equals(mNewText, edit.mOldText)) { 6453 // Merge with the replace that replaces the same region. 6454 mNewText = edit.mNewText; 6455 mNewCursorPos = edit.mNewCursorPos; 6456 mIsComposition = edit.mIsComposition; 6457 return true; 6458 } 6459 return false; 6460 } 6461 6462 /** 6463 * Forcibly creates a single merged edit operation by simulating the entire text 6464 * contents being replaced. 6465 */ 6466 public void forceMergeWith(EditOperation edit) { 6467 if (DEBUG_UNDO) Log.d(TAG, "forceMerge"); 6468 if (mergeWith(edit)) { 6469 return; 6470 } 6471 Editor editor = getOwnerData(); 6472 6473 // Copy the text of the current field. 6474 // NOTE: Using StringBuilder instead of SpannableStringBuilder would be somewhat faster, 6475 // but would require two parallel implementations of modifyText() because Editable and 6476 // StringBuilder do not share an interface for replace/delete/insert. 6477 Editable editable = (Editable) editor.mTextView.getText(); 6478 Editable originalText = new SpannableStringBuilder(editable.toString()); 6479 6480 // Roll back the last operation. 6481 modifyText(originalText, mStart, getNewTextEnd(), mOldText, mStart, mOldCursorPos); 6482 6483 // Clone the text again and apply the new operation. 6484 Editable finalText = new SpannableStringBuilder(editable.toString()); 6485 modifyText(finalText, edit.mStart, edit.getOldTextEnd(), 6486 edit.mNewText, edit.mStart, edit.mNewCursorPos); 6487 6488 // Convert this operation into a replace operation. 6489 mType = TYPE_REPLACE; 6490 mNewText = finalText.toString(); 6491 mOldText = originalText.toString(); 6492 mStart = 0; 6493 mNewCursorPos = edit.mNewCursorPos; 6494 mIsComposition = edit.mIsComposition; 6495 // mOldCursorPos is unchanged. 6496 } 6497 6498 private static void modifyText(Editable text, int deleteFrom, int deleteTo, 6499 CharSequence newText, int newTextInsertAt, int newCursorPos) { 6500 // Apply the edit if it is still valid. 6501 if (isValidRange(text, deleteFrom, deleteTo) 6502 && newTextInsertAt <= text.length() - (deleteTo - deleteFrom)) { 6503 if (deleteFrom != deleteTo) { 6504 text.delete(deleteFrom, deleteTo); 6505 } 6506 if (newText.length() != 0) { 6507 text.insert(newTextInsertAt, newText); 6508 } 6509 } 6510 // Restore the cursor position. If there wasn't an old cursor (newCursorPos == -1) then 6511 // don't explicitly set it and rely on SpannableStringBuilder to position it. 6512 // TODO: Select all the text that was undone. 6513 if (0 <= newCursorPos && newCursorPos <= text.length()) { 6514 Selection.setSelection(text, newCursorPos); 6515 } 6516 } 6517 6518 private String getTypeString() { 6519 switch (mType) { 6520 case TYPE_INSERT: 6521 return "insert"; 6522 case TYPE_DELETE: 6523 return "delete"; 6524 case TYPE_REPLACE: 6525 return "replace"; 6526 default: 6527 return ""; 6528 } 6529 } 6530 6531 @Override 6532 public String toString() { 6533 return "[mType=" + getTypeString() + ", " 6534 + "mOldText=" + mOldText + ", " 6535 + "mNewText=" + mNewText + ", " 6536 + "mStart=" + mStart + ", " 6537 + "mOldCursorPos=" + mOldCursorPos + ", " 6538 + "mNewCursorPos=" + mNewCursorPos + ", " 6539 + "mFrozen=" + mFrozen + ", " 6540 + "mIsComposition=" + mIsComposition + "]"; 6541 } 6542 6543 public static final Parcelable.ClassLoaderCreator<EditOperation> CREATOR = 6544 new Parcelable.ClassLoaderCreator<EditOperation>() { 6545 @Override 6546 public EditOperation createFromParcel(Parcel in) { 6547 return new EditOperation(in, null); 6548 } 6549 6550 @Override 6551 public EditOperation createFromParcel(Parcel in, ClassLoader loader) { 6552 return new EditOperation(in, loader); 6553 } 6554 6555 @Override 6556 public EditOperation[] newArray(int size) { 6557 return new EditOperation[size]; 6558 } 6559 }; 6560 } 6561 6562 /** 6563 * A helper for enabling and handling "PROCESS_TEXT" menu actions. 6564 * These allow external applications to plug into currently selected text. 6565 */ 6566 static final class ProcessTextIntentActionsHandler { 6567 6568 private final Editor mEditor; 6569 private final TextView mTextView; 6570 private final Context mContext; 6571 private final PackageManager mPackageManager; 6572 private final String mPackageName; 6573 private final SparseArray<Intent> mAccessibilityIntents = new SparseArray<>(); 6574 private final SparseArray<AccessibilityNodeInfo.AccessibilityAction> mAccessibilityActions = 6575 new SparseArray<>(); 6576 private final List<ResolveInfo> mSupportedActivities = new ArrayList<>(); 6577 6578 private ProcessTextIntentActionsHandler(Editor editor) { 6579 mEditor = Preconditions.checkNotNull(editor); 6580 mTextView = Preconditions.checkNotNull(mEditor.mTextView); 6581 mContext = Preconditions.checkNotNull(mTextView.getContext()); 6582 mPackageManager = Preconditions.checkNotNull(mContext.getPackageManager()); 6583 mPackageName = Preconditions.checkNotNull(mContext.getPackageName()); 6584 } 6585 6586 /** 6587 * Adds "PROCESS_TEXT" menu items to the specified menu. 6588 */ 6589 public void onInitializeMenu(Menu menu) { 6590 loadSupportedActivities(); 6591 final int size = mSupportedActivities.size(); 6592 for (int i = 0; i < size; i++) { 6593 final ResolveInfo resolveInfo = mSupportedActivities.get(i); 6594 menu.add(Menu.NONE, Menu.NONE, 6595 Editor.MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START + i, 6596 getLabel(resolveInfo)) 6597 .setIntent(createProcessTextIntentForResolveInfo(resolveInfo)) 6598 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 6599 } 6600 } 6601 6602 /** 6603 * Performs a "PROCESS_TEXT" action if there is one associated with the specified 6604 * menu item. 6605 * 6606 * @return True if the action was performed, false otherwise. 6607 */ 6608 public boolean performMenuItemAction(MenuItem item) { 6609 return fireIntent(item.getIntent()); 6610 } 6611 6612 /** 6613 * Initializes and caches "PROCESS_TEXT" accessibility actions. 6614 */ 6615 public void initializeAccessibilityActions() { 6616 mAccessibilityIntents.clear(); 6617 mAccessibilityActions.clear(); 6618 int i = 0; 6619 loadSupportedActivities(); 6620 for (ResolveInfo resolveInfo : mSupportedActivities) { 6621 int actionId = TextView.ACCESSIBILITY_ACTION_PROCESS_TEXT_START_ID + i++; 6622 mAccessibilityActions.put( 6623 actionId, 6624 new AccessibilityNodeInfo.AccessibilityAction( 6625 actionId, getLabel(resolveInfo))); 6626 mAccessibilityIntents.put( 6627 actionId, createProcessTextIntentForResolveInfo(resolveInfo)); 6628 } 6629 } 6630 6631 /** 6632 * Adds "PROCESS_TEXT" accessibility actions to the specified accessibility node info. 6633 * NOTE: This needs a prior call to {@link #initializeAccessibilityActions()} to make the 6634 * latest accessibility actions available for this call. 6635 */ 6636 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo nodeInfo) { 6637 for (int i = 0; i < mAccessibilityActions.size(); i++) { 6638 nodeInfo.addAction(mAccessibilityActions.valueAt(i)); 6639 } 6640 } 6641 6642 /** 6643 * Performs a "PROCESS_TEXT" action if there is one associated with the specified 6644 * accessibility action id. 6645 * 6646 * @return True if the action was performed, false otherwise. 6647 */ 6648 public boolean performAccessibilityAction(int actionId) { 6649 return fireIntent(mAccessibilityIntents.get(actionId)); 6650 } 6651 6652 private boolean fireIntent(Intent intent) { 6653 if (intent != null && Intent.ACTION_PROCESS_TEXT.equals(intent.getAction())) { 6654 String selectedText = mTextView.getSelectedText(); 6655 selectedText = TextUtils.trimToParcelableSize(selectedText); 6656 intent.putExtra(Intent.EXTRA_PROCESS_TEXT, selectedText); 6657 mEditor.mPreserveSelection = true; 6658 mTextView.startActivityForResult(intent, TextView.PROCESS_TEXT_REQUEST_CODE); 6659 return true; 6660 } 6661 return false; 6662 } 6663 6664 private void loadSupportedActivities() { 6665 mSupportedActivities.clear(); 6666 if (!mContext.canStartActivityForResult()) { 6667 return; 6668 } 6669 PackageManager packageManager = mTextView.getContext().getPackageManager(); 6670 List<ResolveInfo> unfiltered = 6671 packageManager.queryIntentActivities(createProcessTextIntent(), 0); 6672 for (ResolveInfo info : unfiltered) { 6673 if (isSupportedActivity(info)) { 6674 mSupportedActivities.add(info); 6675 } 6676 } 6677 } 6678 6679 private boolean isSupportedActivity(ResolveInfo info) { 6680 return mPackageName.equals(info.activityInfo.packageName) 6681 || info.activityInfo.exported 6682 && (info.activityInfo.permission == null 6683 || mContext.checkSelfPermission(info.activityInfo.permission) 6684 == PackageManager.PERMISSION_GRANTED); 6685 } 6686 6687 private Intent createProcessTextIntentForResolveInfo(ResolveInfo info) { 6688 return createProcessTextIntent() 6689 .putExtra(Intent.EXTRA_PROCESS_TEXT_READONLY, !mTextView.isTextEditable()) 6690 .setClassName(info.activityInfo.packageName, info.activityInfo.name); 6691 } 6692 6693 private Intent createProcessTextIntent() { 6694 return new Intent() 6695 .setAction(Intent.ACTION_PROCESS_TEXT) 6696 .setType("text/plain"); 6697 } 6698 6699 private CharSequence getLabel(ResolveInfo resolveInfo) { 6700 return resolveInfo.loadLabel(mPackageManager); 6701 } 6702 } 6703} 6704