| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.widget; |
| |
| import android.R; |
| import android.annotation.IntDef; |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.app.PendingIntent; |
| import android.app.PendingIntent.CanceledException; |
| import android.content.ClipData; |
| import android.content.ClipData.Item; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.UndoManager; |
| import android.content.UndoOperation; |
| import android.content.UndoOwner; |
| import android.content.pm.PackageManager; |
| import android.content.pm.ResolveInfo; |
| import android.content.res.TypedArray; |
| import android.graphics.Canvas; |
| import android.graphics.Color; |
| import android.graphics.Matrix; |
| import android.graphics.Paint; |
| import android.graphics.Path; |
| import android.graphics.Rect; |
| import android.graphics.RectF; |
| import android.graphics.drawable.ColorDrawable; |
| import android.graphics.drawable.Drawable; |
| import android.os.Bundle; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.os.ParcelableParcel; |
| import android.os.SystemClock; |
| import android.provider.Settings; |
| import android.text.DynamicLayout; |
| import android.text.Editable; |
| import android.text.InputFilter; |
| import android.text.InputType; |
| import android.text.Layout; |
| import android.text.ParcelableSpan; |
| import android.text.Selection; |
| import android.text.SpanWatcher; |
| import android.text.Spannable; |
| import android.text.SpannableStringBuilder; |
| import android.text.Spanned; |
| import android.text.StaticLayout; |
| import android.text.TextUtils; |
| import android.text.method.KeyListener; |
| import android.text.method.MetaKeyKeyListener; |
| import android.text.method.MovementMethod; |
| import android.text.method.WordIterator; |
| import android.text.style.EasyEditSpan; |
| import android.text.style.SuggestionRangeSpan; |
| import android.text.style.SuggestionSpan; |
| import android.text.style.TextAppearanceSpan; |
| import android.text.style.URLSpan; |
| import android.util.DisplayMetrics; |
| import android.util.LocaleList; |
| import android.util.Log; |
| import android.util.SparseArray; |
| import android.view.ActionMode; |
| import android.view.ActionMode.Callback; |
| import android.view.ContextMenu; |
| import android.view.DisplayListCanvas; |
| import android.view.DragEvent; |
| import android.view.DropPermissions; |
| import android.view.Gravity; |
| import android.view.InputDevice; |
| import android.view.LayoutInflater; |
| import android.view.Menu; |
| import android.view.MenuItem; |
| import android.view.MotionEvent; |
| import android.view.RenderNode; |
| import android.view.SubMenu; |
| import android.view.View; |
| import android.view.View.DragShadowBuilder; |
| import android.view.View.OnClickListener; |
| import android.view.ViewConfiguration; |
| import android.view.ViewGroup; |
| import android.view.ViewGroup.LayoutParams; |
| import android.view.ViewParent; |
| import android.view.ViewTreeObserver; |
| import android.view.WindowManager; |
| import android.view.accessibility.AccessibilityNodeInfo; |
| import android.view.inputmethod.CorrectionInfo; |
| import android.view.inputmethod.CursorAnchorInfo; |
| import android.view.inputmethod.EditorInfo; |
| import android.view.inputmethod.ExtractedText; |
| import android.view.inputmethod.ExtractedTextRequest; |
| import android.view.inputmethod.InputConnection; |
| import android.view.inputmethod.InputMethodManager; |
| import android.widget.AdapterView.OnItemClickListener; |
| import android.widget.TextView.Drawables; |
| import android.widget.TextView.OnEditorActionListener; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.internal.util.ArrayUtils; |
| import com.android.internal.util.GrowingArrayUtils; |
| import com.android.internal.util.Preconditions; |
| import com.android.internal.widget.EditableInputConnection; |
| |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.text.BreakIterator; |
| import java.util.Arrays; |
| import java.util.Comparator; |
| import java.util.HashMap; |
| import java.util.List; |
| |
| |
| /** |
| * Helper class used by TextView to handle editable text views. |
| * |
| * @hide |
| */ |
| public class Editor { |
| private static final String TAG = "Editor"; |
| private static final boolean DEBUG_UNDO = false; |
| |
| static final int BLINK = 500; |
| private static final float[] TEMP_POSITION = new float[2]; |
| private static int DRAG_SHADOW_MAX_TEXT_LENGTH = 20; |
| private static final float LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS = 0.5f; |
| private static final int UNSET_X_VALUE = -1; |
| private static final int UNSET_LINE = -1; |
| // Tag used when the Editor maintains its own separate UndoManager. |
| private static final String UNDO_OWNER_TAG = "Editor"; |
| |
| // Ordering constants used to place the Action Mode or context menu items in their menu. |
| private static final int MENU_ITEM_ORDER_UNDO = 1; |
| private static final int MENU_ITEM_ORDER_REDO = 2; |
| private static final int MENU_ITEM_ORDER_CUT = 3; |
| private static final int MENU_ITEM_ORDER_COPY = 4; |
| private static final int MENU_ITEM_ORDER_PASTE = 5; |
| private static final int MENU_ITEM_ORDER_PASTE_AS_PLAIN_TEXT = 6; |
| private static final int MENU_ITEM_ORDER_SHARE = 7; |
| private static final int MENU_ITEM_ORDER_SELECT_ALL = 8; |
| private static final int MENU_ITEM_ORDER_REPLACE = 9; |
| private static final int MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START = 10; |
| |
| // Each Editor manages its own undo stack. |
| private final UndoManager mUndoManager = new UndoManager(); |
| private UndoOwner mUndoOwner = mUndoManager.getOwner(UNDO_OWNER_TAG, this); |
| final UndoInputFilter mUndoInputFilter = new UndoInputFilter(this); |
| boolean mAllowUndo = true; |
| |
| // Cursor Controllers. |
| InsertionPointCursorController mInsertionPointCursorController; |
| SelectionModifierCursorController mSelectionModifierCursorController; |
| // Action mode used when text is selected or when actions on an insertion cursor are triggered. |
| ActionMode mTextActionMode; |
| boolean mInsertionControllerEnabled; |
| boolean mSelectionControllerEnabled; |
| |
| // Used to highlight a word when it is corrected by the IME |
| CorrectionHighlighter mCorrectionHighlighter; |
| |
| InputContentType mInputContentType; |
| InputMethodState mInputMethodState; |
| |
| private static class TextRenderNode { |
| RenderNode renderNode; |
| boolean isDirty; |
| public TextRenderNode(String name) { |
| isDirty = true; |
| renderNode = RenderNode.create(name, null); |
| } |
| boolean needsRecord() { return isDirty || !renderNode.isValid(); } |
| } |
| TextRenderNode[] mTextRenderNodes; |
| |
| boolean mFrozenWithFocus; |
| boolean mSelectionMoved; |
| boolean mTouchFocusSelected; |
| |
| KeyListener mKeyListener; |
| int mInputType = EditorInfo.TYPE_NULL; |
| |
| boolean mDiscardNextActionUp; |
| boolean mIgnoreActionUpEvent; |
| private boolean mIgnoreNextMouseActionUpOrDown; |
| |
| long mShowCursor; |
| Blink mBlink; |
| |
| boolean mCursorVisible = true; |
| boolean mSelectAllOnFocus; |
| boolean mTextIsSelectable; |
| |
| CharSequence mError; |
| boolean mErrorWasChanged; |
| ErrorPopup mErrorPopup; |
| |
| /** |
| * This flag is set if the TextView tries to display an error before it |
| * is attached to the window (so its position is still unknown). |
| * It causes the error to be shown later, when onAttachedToWindow() |
| * is called. |
| */ |
| boolean mShowErrorAfterAttach; |
| |
| boolean mInBatchEditControllers; |
| boolean mShowSoftInputOnFocus = true; |
| private boolean mPreserveSelection; |
| private boolean mRestartActionModeOnNextRefresh; |
| |
| boolean mIsBeingLongClicked; |
| |
| SuggestionsPopupWindow mSuggestionsPopupWindow; |
| SuggestionRangeSpan mSuggestionRangeSpan; |
| Runnable mShowSuggestionRunnable; |
| |
| final Drawable[] mCursorDrawable = new Drawable[2]; |
| int mCursorCount; // Current number of used mCursorDrawable: 0 (resource=0), 1 or 2 (split) |
| |
| private Drawable mSelectHandleLeft; |
| private Drawable mSelectHandleRight; |
| private Drawable mSelectHandleCenter; |
| |
| // Global listener that detects changes in the global position of the TextView |
| private PositionListener mPositionListener; |
| |
| float mLastDownPositionX, mLastDownPositionY; |
| private float mContextMenuAnchorX, mContextMenuAnchorY; |
| Callback mCustomSelectionActionModeCallback; |
| Callback mCustomInsertionActionModeCallback; |
| |
| // Set when this TextView gained focus with some text selected. Will start selection mode. |
| boolean mCreatedWithASelection; |
| |
| // Indicates the current tap state (first tap, double tap, or triple click). |
| private int mTapState = TAP_STATE_INITIAL; |
| private long mLastTouchUpTime = 0; |
| private static final int TAP_STATE_INITIAL = 0; |
| private static final int TAP_STATE_FIRST_TAP = 1; |
| private static final int TAP_STATE_DOUBLE_TAP = 2; |
| // Only for mouse input. |
| private static final int TAP_STATE_TRIPLE_CLICK = 3; |
| |
| // The button state as of the last time #onTouchEvent is called. |
| private int mLastButtonState; |
| |
| private Runnable mInsertionActionModeRunnable; |
| |
| // The span controller helps monitoring the changes to which the Editor needs to react: |
| // - EasyEditSpans, for which we have some UI to display on attach and on hide |
| // - SelectionSpans, for which we need to call updateSelection if an IME is attached |
| private SpanController mSpanController; |
| |
| WordIterator mWordIterator; |
| SpellChecker mSpellChecker; |
| |
| // This word iterator is set with text and used to determine word boundaries |
| // when a user is selecting text. |
| private WordIterator mWordIteratorWithText; |
| // Indicate that the text in the word iterator needs to be updated. |
| private boolean mUpdateWordIteratorText; |
| |
| private Rect mTempRect; |
| |
| private TextView mTextView; |
| |
| final ProcessTextIntentActionsHandler mProcessTextIntentActionsHandler; |
| |
| final CursorAnchorInfoNotifier mCursorAnchorInfoNotifier = new CursorAnchorInfoNotifier(); |
| |
| private final Runnable mShowFloatingToolbar = new Runnable() { |
| @Override |
| public void run() { |
| if (mTextActionMode != null) { |
| mTextActionMode.hide(0); // hide off. |
| } |
| } |
| }; |
| |
| boolean mIsInsertionActionModeStartPending = false; |
| |
| private final SuggestionHelper mSuggestionHelper = new SuggestionHelper(); |
| |
| Editor(TextView textView) { |
| mTextView = textView; |
| // Synchronize the filter list, which places the undo input filter at the end. |
| mTextView.setFilters(mTextView.getFilters()); |
| mProcessTextIntentActionsHandler = new ProcessTextIntentActionsHandler(this); |
| } |
| |
| ParcelableParcel saveInstanceState() { |
| ParcelableParcel state = new ParcelableParcel(getClass().getClassLoader()); |
| Parcel parcel = state.getParcel(); |
| mUndoManager.saveInstanceState(parcel); |
| mUndoInputFilter.saveInstanceState(parcel); |
| return state; |
| } |
| |
| void restoreInstanceState(ParcelableParcel state) { |
| Parcel parcel = state.getParcel(); |
| mUndoManager.restoreInstanceState(parcel, state.getClassLoader()); |
| mUndoInputFilter.restoreInstanceState(parcel); |
| // Re-associate this object as the owner of undo state. |
| mUndoOwner = mUndoManager.getOwner(UNDO_OWNER_TAG, this); |
| } |
| |
| /** |
| * Forgets all undo and redo operations for this Editor. |
| */ |
| void forgetUndoRedo() { |
| UndoOwner[] owners = { mUndoOwner }; |
| mUndoManager.forgetUndos(owners, -1 /* all */); |
| mUndoManager.forgetRedos(owners, -1 /* all */); |
| } |
| |
| boolean canUndo() { |
| UndoOwner[] owners = { mUndoOwner }; |
| return mAllowUndo && mUndoManager.countUndos(owners) > 0; |
| } |
| |
| boolean canRedo() { |
| UndoOwner[] owners = { mUndoOwner }; |
| return mAllowUndo && mUndoManager.countRedos(owners) > 0; |
| } |
| |
| void undo() { |
| if (!mAllowUndo) { |
| return; |
| } |
| UndoOwner[] owners = { mUndoOwner }; |
| mUndoManager.undo(owners, 1); // Undo 1 action. |
| } |
| |
| void redo() { |
| if (!mAllowUndo) { |
| return; |
| } |
| UndoOwner[] owners = { mUndoOwner }; |
| mUndoManager.redo(owners, 1); // Redo 1 action. |
| } |
| |
| void replace() { |
| if (mSuggestionsPopupWindow == null) { |
| mSuggestionsPopupWindow = new SuggestionsPopupWindow(); |
| } |
| hideCursorAndSpanControllers(); |
| mSuggestionsPopupWindow.show(); |
| |
| int middle = (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; |
| Selection.setSelection((Spannable) mTextView.getText(), middle); |
| } |
| |
| void onAttachedToWindow() { |
| if (mShowErrorAfterAttach) { |
| showError(); |
| mShowErrorAfterAttach = false; |
| } |
| |
| final ViewTreeObserver observer = mTextView.getViewTreeObserver(); |
| // No need to create the controller. |
| // The get method will add the listener on controller creation. |
| if (mInsertionPointCursorController != null) { |
| observer.addOnTouchModeChangeListener(mInsertionPointCursorController); |
| } |
| if (mSelectionModifierCursorController != null) { |
| mSelectionModifierCursorController.resetTouchOffsets(); |
| observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); |
| } |
| updateSpellCheckSpans(0, mTextView.getText().length(), |
| true /* create the spell checker if needed */); |
| |
| if (mTextView.hasSelection()) { |
| refreshTextActionMode(); |
| } |
| |
| getPositionListener().addSubscriber(mCursorAnchorInfoNotifier, true); |
| resumeBlink(); |
| } |
| |
| void onDetachedFromWindow() { |
| getPositionListener().removeSubscriber(mCursorAnchorInfoNotifier); |
| |
| if (mError != null) { |
| hideError(); |
| } |
| |
| suspendBlink(); |
| |
| if (mInsertionPointCursorController != null) { |
| mInsertionPointCursorController.onDetached(); |
| } |
| |
| if (mSelectionModifierCursorController != null) { |
| mSelectionModifierCursorController.onDetached(); |
| } |
| |
| if (mShowSuggestionRunnable != null) { |
| mTextView.removeCallbacks(mShowSuggestionRunnable); |
| } |
| |
| // Cancel the single tap delayed runnable. |
| if (mInsertionActionModeRunnable != null) { |
| mTextView.removeCallbacks(mInsertionActionModeRunnable); |
| } |
| |
| mTextView.removeCallbacks(mShowFloatingToolbar); |
| |
| discardTextDisplayLists(); |
| |
| if (mSpellChecker != null) { |
| mSpellChecker.closeSession(); |
| // Forces the creation of a new SpellChecker next time this window is created. |
| // Will handle the cases where the settings has been changed in the meantime. |
| mSpellChecker = null; |
| } |
| |
| hideCursorAndSpanControllers(); |
| stopTextActionModeWithPreservingSelection(); |
| } |
| |
| private void discardTextDisplayLists() { |
| if (mTextRenderNodes != null) { |
| for (int i = 0; i < mTextRenderNodes.length; i++) { |
| RenderNode displayList = mTextRenderNodes[i] != null |
| ? mTextRenderNodes[i].renderNode : null; |
| if (displayList != null && displayList.isValid()) { |
| displayList.discardDisplayList(); |
| } |
| } |
| } |
| } |
| |
| private void showError() { |
| if (mTextView.getWindowToken() == null) { |
| mShowErrorAfterAttach = true; |
| return; |
| } |
| |
| if (mErrorPopup == null) { |
| LayoutInflater inflater = LayoutInflater.from(mTextView.getContext()); |
| final TextView err = (TextView) inflater.inflate( |
| com.android.internal.R.layout.textview_hint, null); |
| |
| final float scale = mTextView.getResources().getDisplayMetrics().density; |
| mErrorPopup = new ErrorPopup(err, (int)(200 * scale + 0.5f), (int)(50 * scale + 0.5f)); |
| mErrorPopup.setFocusable(false); |
| // The user is entering text, so the input method is needed. We |
| // don't want the popup to be displayed on top of it. |
| mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); |
| } |
| |
| TextView tv = (TextView) mErrorPopup.getContentView(); |
| chooseSize(mErrorPopup, mError, tv); |
| tv.setText(mError); |
| |
| mErrorPopup.showAsDropDown(mTextView, getErrorX(), getErrorY()); |
| mErrorPopup.fixDirection(mErrorPopup.isAboveAnchor()); |
| } |
| |
| public void setError(CharSequence error, Drawable icon) { |
| mError = TextUtils.stringOrSpannedString(error); |
| mErrorWasChanged = true; |
| |
| if (mError == null) { |
| setErrorIcon(null); |
| if (mErrorPopup != null) { |
| if (mErrorPopup.isShowing()) { |
| mErrorPopup.dismiss(); |
| } |
| |
| mErrorPopup = null; |
| } |
| mShowErrorAfterAttach = false; |
| } else { |
| setErrorIcon(icon); |
| if (mTextView.isFocused()) { |
| showError(); |
| } |
| } |
| } |
| |
| private void setErrorIcon(Drawable icon) { |
| Drawables dr = mTextView.mDrawables; |
| if (dr == null) { |
| mTextView.mDrawables = dr = new Drawables(mTextView.getContext()); |
| } |
| dr.setErrorDrawable(icon, mTextView); |
| |
| mTextView.resetResolvedDrawables(); |
| mTextView.invalidate(); |
| mTextView.requestLayout(); |
| } |
| |
| private void hideError() { |
| if (mErrorPopup != null) { |
| if (mErrorPopup.isShowing()) { |
| mErrorPopup.dismiss(); |
| } |
| } |
| |
| mShowErrorAfterAttach = false; |
| } |
| |
| /** |
| * Returns the X offset to make the pointy top of the error point |
| * at the middle of the error icon. |
| */ |
| private int getErrorX() { |
| /* |
| * The "25" is the distance between the point and the right edge |
| * of the background |
| */ |
| final float scale = mTextView.getResources().getDisplayMetrics().density; |
| |
| final Drawables dr = mTextView.mDrawables; |
| |
| final int layoutDirection = mTextView.getLayoutDirection(); |
| int errorX; |
| int offset; |
| switch (layoutDirection) { |
| default: |
| case View.LAYOUT_DIRECTION_LTR: |
| offset = - (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f); |
| errorX = mTextView.getWidth() - mErrorPopup.getWidth() - |
| mTextView.getPaddingRight() + offset; |
| break; |
| case View.LAYOUT_DIRECTION_RTL: |
| offset = (dr != null ? dr.mDrawableSizeLeft : 0) / 2 - (int) (25 * scale + 0.5f); |
| errorX = mTextView.getPaddingLeft() + offset; |
| break; |
| } |
| return errorX; |
| } |
| |
| /** |
| * Returns the Y offset to make the pointy top of the error point |
| * at the bottom of the error icon. |
| */ |
| private int getErrorY() { |
| /* |
| * Compound, not extended, because the icon is not clipped |
| * if the text height is smaller. |
| */ |
| final int compoundPaddingTop = mTextView.getCompoundPaddingTop(); |
| int vspace = mTextView.getBottom() - mTextView.getTop() - |
| mTextView.getCompoundPaddingBottom() - compoundPaddingTop; |
| |
| final Drawables dr = mTextView.mDrawables; |
| |
| final int layoutDirection = mTextView.getLayoutDirection(); |
| int height; |
| switch (layoutDirection) { |
| default: |
| case View.LAYOUT_DIRECTION_LTR: |
| height = (dr != null ? dr.mDrawableHeightRight : 0); |
| break; |
| case View.LAYOUT_DIRECTION_RTL: |
| height = (dr != null ? dr.mDrawableHeightLeft : 0); |
| break; |
| } |
| |
| int icontop = compoundPaddingTop + (vspace - height) / 2; |
| |
| /* |
| * The "2" is the distance between the point and the top edge |
| * of the background. |
| */ |
| final float scale = mTextView.getResources().getDisplayMetrics().density; |
| return icontop + height - mTextView.getHeight() - (int) (2 * scale + 0.5f); |
| } |
| |
| void createInputContentTypeIfNeeded() { |
| if (mInputContentType == null) { |
| mInputContentType = new InputContentType(); |
| } |
| } |
| |
| void createInputMethodStateIfNeeded() { |
| if (mInputMethodState == null) { |
| mInputMethodState = new InputMethodState(); |
| } |
| } |
| |
| boolean isCursorVisible() { |
| // The default value is true, even when there is no associated Editor |
| return mCursorVisible && mTextView.isTextEditable(); |
| } |
| |
| void prepareCursorControllers() { |
| boolean windowSupportsHandles = false; |
| |
| ViewGroup.LayoutParams params = mTextView.getRootView().getLayoutParams(); |
| if (params instanceof WindowManager.LayoutParams) { |
| WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params; |
| windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW |
| || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW; |
| } |
| |
| boolean enabled = windowSupportsHandles && mTextView.getLayout() != null; |
| mInsertionControllerEnabled = enabled && isCursorVisible(); |
| mSelectionControllerEnabled = enabled && mTextView.textCanBeSelected(); |
| |
| if (!mInsertionControllerEnabled) { |
| hideInsertionPointCursorController(); |
| if (mInsertionPointCursorController != null) { |
| mInsertionPointCursorController.onDetached(); |
| mInsertionPointCursorController = null; |
| } |
| } |
| |
| if (!mSelectionControllerEnabled) { |
| stopTextActionMode(); |
| if (mSelectionModifierCursorController != null) { |
| mSelectionModifierCursorController.onDetached(); |
| mSelectionModifierCursorController = null; |
| } |
| } |
| } |
| |
| void hideInsertionPointCursorController() { |
| if (mInsertionPointCursorController != null) { |
| mInsertionPointCursorController.hide(); |
| } |
| } |
| |
| /** |
| * Hides the insertion and span controllers. |
| */ |
| void hideCursorAndSpanControllers() { |
| hideCursorControllers(); |
| hideSpanControllers(); |
| } |
| |
| private void hideSpanControllers() { |
| if (mSpanController != null) { |
| mSpanController.hide(); |
| } |
| } |
| |
| private void hideCursorControllers() { |
| // When mTextView is not ExtractEditText, we need to distinguish two kinds of focus-lost. |
| // One is the true focus lost where suggestions pop-up (if any) should be dismissed, and the |
| // other is an side effect of showing the suggestions pop-up itself. We use isShowingUp() |
| // to distinguish one from the other. |
| if (mSuggestionsPopupWindow != null && ((mTextView.isInExtractedMode()) || |
| !mSuggestionsPopupWindow.isShowingUp())) { |
| // Should be done before hide insertion point controller since it triggers a show of it |
| mSuggestionsPopupWindow.hide(); |
| } |
| hideInsertionPointCursorController(); |
| } |
| |
| /** |
| * Create new SpellCheckSpans on the modified region. |
| */ |
| private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) { |
| // Remove spans whose adjacent characters are text not punctuation |
| mTextView.removeAdjacentSuggestionSpans(start); |
| mTextView.removeAdjacentSuggestionSpans(end); |
| |
| if (mTextView.isTextEditable() && mTextView.isSuggestionsEnabled() && |
| !(mTextView.isInExtractedMode())) { |
| if (mSpellChecker == null && createSpellChecker) { |
| mSpellChecker = new SpellChecker(mTextView); |
| } |
| if (mSpellChecker != null) { |
| mSpellChecker.spellCheck(start, end); |
| } |
| } |
| } |
| |
| void onScreenStateChanged(int screenState) { |
| switch (screenState) { |
| case View.SCREEN_STATE_ON: |
| resumeBlink(); |
| break; |
| case View.SCREEN_STATE_OFF: |
| suspendBlink(); |
| break; |
| } |
| } |
| |
| private void suspendBlink() { |
| if (mBlink != null) { |
| mBlink.cancel(); |
| } |
| } |
| |
| private void resumeBlink() { |
| if (mBlink != null) { |
| mBlink.uncancel(); |
| makeBlink(); |
| } |
| } |
| |
| void adjustInputType(boolean password, boolean passwordInputType, |
| boolean webPasswordInputType, boolean numberPasswordInputType) { |
| // mInputType has been set from inputType, possibly modified by mInputMethod. |
| // Specialize mInputType to [web]password if we have a text class and the original input |
| // type was a password. |
| if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { |
| if (password || passwordInputType) { |
| mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) |
| | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD; |
| } |
| if (webPasswordInputType) { |
| mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) |
| | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; |
| } |
| } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) { |
| if (numberPasswordInputType) { |
| mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) |
| | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD; |
| } |
| } |
| } |
| |
| private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) { |
| int wid = tv.getPaddingLeft() + tv.getPaddingRight(); |
| int ht = tv.getPaddingTop() + tv.getPaddingBottom(); |
| |
| int defaultWidthInPixels = mTextView.getResources().getDimensionPixelSize( |
| com.android.internal.R.dimen.textview_error_popup_default_width); |
| Layout l = new StaticLayout(text, tv.getPaint(), defaultWidthInPixels, |
| Layout.Alignment.ALIGN_NORMAL, 1, 0, true); |
| float max = 0; |
| for (int i = 0; i < l.getLineCount(); i++) { |
| max = Math.max(max, l.getLineWidth(i)); |
| } |
| |
| /* |
| * Now set the popup size to be big enough for the text plus the border capped |
| * to DEFAULT_MAX_POPUP_WIDTH |
| */ |
| pop.setWidth(wid + (int) Math.ceil(max)); |
| pop.setHeight(ht + l.getHeight()); |
| } |
| |
| void setFrame() { |
| if (mErrorPopup != null) { |
| TextView tv = (TextView) mErrorPopup.getContentView(); |
| chooseSize(mErrorPopup, mError, tv); |
| mErrorPopup.update(mTextView, getErrorX(), getErrorY(), |
| mErrorPopup.getWidth(), mErrorPopup.getHeight()); |
| } |
| } |
| |
| private int getWordStart(int offset) { |
| // FIXME - For this and similar methods we're not doing anything to check if there's |
| // a LocaleSpan in the text, this may be something we should try handling or checking for. |
| int retOffset = getWordIteratorWithText().prevBoundary(offset); |
| if (getWordIteratorWithText().isOnPunctuation(retOffset)) { |
| // On punctuation boundary or within group of punctuation, find punctuation start. |
| retOffset = getWordIteratorWithText().getPunctuationBeginning(offset); |
| } else { |
| // Not on a punctuation boundary, find the word start. |
| retOffset = getWordIteratorWithText().getPrevWordBeginningOnTwoWordsBoundary(offset); |
| } |
| if (retOffset == BreakIterator.DONE) { |
| return offset; |
| } |
| return retOffset; |
| } |
| |
| private int getWordEnd(int offset) { |
| int retOffset = getWordIteratorWithText().nextBoundary(offset); |
| if (getWordIteratorWithText().isAfterPunctuation(retOffset)) { |
| // On punctuation boundary or within group of punctuation, find punctuation end. |
| retOffset = getWordIteratorWithText().getPunctuationEnd(offset); |
| } else { |
| // Not on a punctuation boundary, find the word end. |
| retOffset = getWordIteratorWithText().getNextWordEndOnTwoWordBoundary(offset); |
| } |
| if (retOffset == BreakIterator.DONE) { |
| return offset; |
| } |
| return retOffset; |
| } |
| |
| private boolean needsToSelectAllToSelectWordOrParagraph() { |
| if (mTextView.hasPasswordTransformationMethod()) { |
| // Always select all on a password field. |
| // Cut/copy menu entries are not available for passwords, but being able to select all |
| // is however useful to delete or paste to replace the entire content. |
| return true; |
| } |
| |
| int inputType = mTextView.getInputType(); |
| int klass = inputType & InputType.TYPE_MASK_CLASS; |
| int variation = inputType & InputType.TYPE_MASK_VARIATION; |
| |
| // Specific text field types: select the entire text for these |
| if (klass == InputType.TYPE_CLASS_NUMBER || |
| klass == InputType.TYPE_CLASS_PHONE || |
| klass == InputType.TYPE_CLASS_DATETIME || |
| variation == InputType.TYPE_TEXT_VARIATION_URI || |
| variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS || |
| variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS || |
| variation == InputType.TYPE_TEXT_VARIATION_FILTER) { |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Adjusts selection to the word under last touch offset. Return true if the operation was |
| * successfully performed. |
| */ |
| private boolean selectCurrentWord() { |
| if (!mTextView.canSelectText()) { |
| return false; |
| } |
| |
| if (needsToSelectAllToSelectWordOrParagraph()) { |
| return mTextView.selectAllText(); |
| } |
| |
| long lastTouchOffsets = getLastTouchOffsets(); |
| final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); |
| final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); |
| |
| // Safety check in case standard touch event handling has been bypassed |
| if (minOffset < 0 || minOffset > mTextView.getText().length()) return false; |
| if (maxOffset < 0 || maxOffset > mTextView.getText().length()) return false; |
| |
| int selectionStart, selectionEnd; |
| |
| // If a URLSpan (web address, email, phone...) is found at that position, select it. |
| URLSpan[] urlSpans = ((Spanned) mTextView.getText()). |
| getSpans(minOffset, maxOffset, URLSpan.class); |
| if (urlSpans.length >= 1) { |
| URLSpan urlSpan = urlSpans[0]; |
| selectionStart = ((Spanned) mTextView.getText()).getSpanStart(urlSpan); |
| selectionEnd = ((Spanned) mTextView.getText()).getSpanEnd(urlSpan); |
| } else { |
| // FIXME - We should check if there's a LocaleSpan in the text, this may be |
| // something we should try handling or checking for. |
| final WordIterator wordIterator = getWordIterator(); |
| wordIterator.setCharSequence(mTextView.getText(), minOffset, maxOffset); |
| |
| selectionStart = wordIterator.getBeginning(minOffset); |
| selectionEnd = wordIterator.getEnd(maxOffset); |
| |
| if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE || |
| selectionStart == selectionEnd) { |
| // Possible when the word iterator does not properly handle the text's language |
| long range = getCharClusterRange(minOffset); |
| selectionStart = TextUtils.unpackRangeStartFromLong(range); |
| selectionEnd = TextUtils.unpackRangeEndFromLong(range); |
| } |
| } |
| |
| Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); |
| return selectionEnd > selectionStart; |
| } |
| |
| /** |
| * Adjusts selection to the paragraph under last touch offset. Return true if the operation was |
| * successfully performed. |
| */ |
| private boolean selectCurrentParagraph() { |
| if (!mTextView.canSelectText()) { |
| return false; |
| } |
| |
| if (needsToSelectAllToSelectWordOrParagraph()) { |
| return mTextView.selectAllText(); |
| } |
| |
| long lastTouchOffsets = getLastTouchOffsets(); |
| final int minLastTouchOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); |
| final int maxLastTouchOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); |
| |
| final long paragraphsRange = getParagraphsRange(minLastTouchOffset, maxLastTouchOffset); |
| final int start = TextUtils.unpackRangeStartFromLong(paragraphsRange); |
| final int end = TextUtils.unpackRangeEndFromLong(paragraphsRange); |
| if (start < end) { |
| Selection.setSelection((Spannable) mTextView.getText(), start, end); |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Get the minimum range of paragraphs that contains startOffset and endOffset. |
| */ |
| private long getParagraphsRange(int startOffset, int endOffset) { |
| final Layout layout = mTextView.getLayout(); |
| if (layout == null) { |
| return TextUtils.packRangeInLong(-1, -1); |
| } |
| final CharSequence text = mTextView.getText(); |
| int minLine = layout.getLineForOffset(startOffset); |
| // Search paragraph start. |
| while (minLine > 0) { |
| final int prevLineEndOffset = layout.getLineEnd(minLine - 1); |
| if (text.charAt(prevLineEndOffset - 1) == '\n') { |
| break; |
| } |
| minLine--; |
| } |
| int maxLine = layout.getLineForOffset(endOffset); |
| // Search paragraph end. |
| while (maxLine < layout.getLineCount() - 1) { |
| final int lineEndOffset = layout.getLineEnd(maxLine); |
| if (text.charAt(lineEndOffset - 1) == '\n') { |
| break; |
| } |
| maxLine++; |
| } |
| return TextUtils.packRangeInLong(layout.getLineStart(minLine), layout.getLineEnd(maxLine)); |
| } |
| |
| void onLocaleChanged() { |
| // Will be re-created on demand in getWordIterator and getWordIteratorWithText with the |
| // proper new locale |
| mWordIterator = null; |
| mWordIteratorWithText = null; |
| } |
| |
| /** |
| * @hide |
| */ |
| public WordIterator getWordIterator() { |
| if (mWordIterator == null) { |
| mWordIterator = new WordIterator(mTextView.getTextServicesLocale()); |
| } |
| return mWordIterator; |
| } |
| |
| private WordIterator getWordIteratorWithText() { |
| if (mWordIteratorWithText == null) { |
| mWordIteratorWithText = new WordIterator(mTextView.getTextServicesLocale()); |
| mUpdateWordIteratorText = true; |
| } |
| if (mUpdateWordIteratorText) { |
| // FIXME - Shouldn't copy all of the text as only the area of the text relevant |
| // to the user's selection is needed. A possible solution would be to |
| // copy some number N of characters near the selection and then when the |
| // user approaches N then we'd do another copy of the next N characters. |
| CharSequence text = mTextView.getText(); |
| mWordIteratorWithText.setCharSequence(text, 0, text.length()); |
| mUpdateWordIteratorText = false; |
| } |
| return mWordIteratorWithText; |
| } |
| |
| private int getNextCursorOffset(int offset, boolean findAfterGivenOffset) { |
| final Layout layout = mTextView.getLayout(); |
| if (layout == null) return offset; |
| return findAfterGivenOffset == layout.isRtlCharAt(offset) ? |
| layout.getOffsetToLeftOf(offset) : layout.getOffsetToRightOf(offset); |
| } |
| |
| private long getCharClusterRange(int offset) { |
| final int textLength = mTextView.getText().length(); |
| if (offset < textLength) { |
| final int clusterEndOffset = getNextCursorOffset(offset, true); |
| return TextUtils.packRangeInLong( |
| getNextCursorOffset(clusterEndOffset, false), clusterEndOffset); |
| } |
| if (offset - 1 >= 0) { |
| final int clusterStartOffset = getNextCursorOffset(offset, false); |
| return TextUtils.packRangeInLong(clusterStartOffset, |
| getNextCursorOffset(clusterStartOffset, true)); |
| } |
| return TextUtils.packRangeInLong(offset, offset); |
| } |
| |
| private boolean touchPositionIsInSelection() { |
| int selectionStart = mTextView.getSelectionStart(); |
| int selectionEnd = mTextView.getSelectionEnd(); |
| |
| if (selectionStart == selectionEnd) { |
| return false; |
| } |
| |
| if (selectionStart > selectionEnd) { |
| int tmp = selectionStart; |
| selectionStart = selectionEnd; |
| selectionEnd = tmp; |
| Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); |
| } |
| |
| SelectionModifierCursorController selectionController = getSelectionController(); |
| int minOffset = selectionController.getMinTouchOffset(); |
| int maxOffset = selectionController.getMaxTouchOffset(); |
| |
| return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); |
| } |
| |
| private PositionListener getPositionListener() { |
| if (mPositionListener == null) { |
| mPositionListener = new PositionListener(); |
| } |
| return mPositionListener; |
| } |
| |
| private interface TextViewPositionListener { |
| public void updatePosition(int parentPositionX, int parentPositionY, |
| boolean parentPositionChanged, boolean parentScrolled); |
| } |
| |
| private boolean isPositionVisible(final float positionX, final float positionY) { |
| synchronized (TEMP_POSITION) { |
| final float[] position = TEMP_POSITION; |
| position[0] = positionX; |
| position[1] = positionY; |
| View view = mTextView; |
| |
| while (view != null) { |
| if (view != mTextView) { |
| // Local scroll is already taken into account in positionX/Y |
| position[0] -= view.getScrollX(); |
| position[1] -= view.getScrollY(); |
| } |
| |
| if (position[0] < 0 || position[1] < 0 || |
| position[0] > view.getWidth() || position[1] > view.getHeight()) { |
| return false; |
| } |
| |
| if (!view.getMatrix().isIdentity()) { |
| view.getMatrix().mapPoints(position); |
| } |
| |
| position[0] += view.getLeft(); |
| position[1] += view.getTop(); |
| |
| final ViewParent parent = view.getParent(); |
| if (parent instanceof View) { |
| view = (View) parent; |
| } else { |
| // We've reached the ViewRoot, stop iterating |
| view = null; |
| } |
| } |
| } |
| |
| // We've been able to walk up the view hierarchy and the position was never clipped |
| return true; |
| } |
| |
| private boolean isOffsetVisible(int offset) { |
| Layout layout = mTextView.getLayout(); |
| if (layout == null) return false; |
| |
| final int line = layout.getLineForOffset(offset); |
| final int lineBottom = layout.getLineBottom(line); |
| final int primaryHorizontal = (int) layout.getPrimaryHorizontal(offset); |
| return isPositionVisible(primaryHorizontal + mTextView.viewportToContentHorizontalOffset(), |
| lineBottom + mTextView.viewportToContentVerticalOffset()); |
| } |
| |
| /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed |
| * in the view. Returns false when the position is in the empty space of left/right of text. |
| */ |
| private boolean isPositionOnText(float x, float y) { |
| Layout layout = mTextView.getLayout(); |
| if (layout == null) return false; |
| |
| final int line = mTextView.getLineAtCoordinate(y); |
| x = mTextView.convertToLocalHorizontalCoordinate(x); |
| |
| if (x < layout.getLineLeft(line)) return false; |
| if (x > layout.getLineRight(line)) return false; |
| return true; |
| } |
| |
| private void startDragAndDrop() { |
| // TODO: Fix drag and drop in full screen extracted mode. |
| if (mTextView.isInExtractedMode()) { |
| return; |
| } |
| final int start = mTextView.getSelectionStart(); |
| final int end = mTextView.getSelectionEnd(); |
| CharSequence selectedText = mTextView.getTransformedText(start, end); |
| ClipData data = ClipData.newPlainText(null, selectedText); |
| DragLocalState localState = new DragLocalState(mTextView, start, end); |
| mTextView.startDragAndDrop(data, getTextThumbnailBuilder(start, end), localState, |
| View.DRAG_FLAG_GLOBAL); |
| stopTextActionMode(); |
| if (hasSelectionController()) { |
| getSelectionController().resetTouchOffsets(); |
| } |
| } |
| |
| public boolean performLongClick(boolean handled) { |
| // Long press in empty space moves cursor and starts the insertion action mode. |
| if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) && |
| mInsertionControllerEnabled) { |
| final int offset = mTextView.getOffsetForPosition(mLastDownPositionX, |
| mLastDownPositionY); |
| Selection.setSelection((Spannable) mTextView.getText(), offset); |
| getInsertionController().show(); |
| mIsInsertionActionModeStartPending = true; |
| handled = true; |
| } |
| |
| if (!handled && mTextActionMode != null) { |
| if (touchPositionIsInSelection()) { |
| startDragAndDrop(); |
| } else { |
| stopTextActionMode(); |
| selectCurrentWordAndStartDrag(); |
| } |
| handled = true; |
| } |
| |
| // Start a new selection |
| if (!handled) { |
| handled = selectCurrentWordAndStartDrag(); |
| } |
| |
| return handled; |
| } |
| |
| private long getLastTouchOffsets() { |
| SelectionModifierCursorController selectionController = getSelectionController(); |
| final int minOffset = selectionController.getMinTouchOffset(); |
| final int maxOffset = selectionController.getMaxTouchOffset(); |
| return TextUtils.packRangeInLong(minOffset, maxOffset); |
| } |
| |
| void onFocusChanged(boolean focused, int direction) { |
| mShowCursor = SystemClock.uptimeMillis(); |
| ensureEndedBatchEdit(); |
| |
| if (focused) { |
| int selStart = mTextView.getSelectionStart(); |
| int selEnd = mTextView.getSelectionEnd(); |
| |
| // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection |
| // mode for these, unless there was a specific selection already started. |
| final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 && |
| selEnd == mTextView.getText().length(); |
| |
| mCreatedWithASelection = mFrozenWithFocus && mTextView.hasSelection() && |
| !isFocusHighlighted; |
| |
| if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { |
| // If a tap was used to give focus to that view, move cursor at tap position. |
| // Has to be done before onTakeFocus, which can be overloaded. |
| final int lastTapPosition = getLastTapPosition(); |
| if (lastTapPosition >= 0) { |
| Selection.setSelection((Spannable) mTextView.getText(), lastTapPosition); |
| } |
| |
| // Note this may have to be moved out of the Editor class |
| MovementMethod mMovement = mTextView.getMovementMethod(); |
| if (mMovement != null) { |
| mMovement.onTakeFocus(mTextView, (Spannable) mTextView.getText(), direction); |
| } |
| |
| // The DecorView does not have focus when the 'Done' ExtractEditText button is |
| // pressed. Since it is the ViewAncestor's mView, it requests focus before |
| // ExtractEditText clears focus, which gives focus to the ExtractEditText. |
| // This special case ensure that we keep current selection in that case. |
| // It would be better to know why the DecorView does not have focus at that time. |
| if (((mTextView.isInExtractedMode()) || mSelectionMoved) && |
| selStart >= 0 && selEnd >= 0) { |
| /* |
| * Someone intentionally set the selection, so let them |
| * do whatever it is that they wanted to do instead of |
| * the default on-focus behavior. We reset the selection |
| * here instead of just skipping the onTakeFocus() call |
| * because some movement methods do something other than |
| * just setting the selection in theirs and we still |
| * need to go through that path. |
| */ |
| Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); |
| } |
| |
| if (mSelectAllOnFocus) { |
| mTextView.selectAllText(); |
| } |
| |
| mTouchFocusSelected = true; |
| } |
| |
| mFrozenWithFocus = false; |
| mSelectionMoved = false; |
| |
| if (mError != null) { |
| showError(); |
| } |
| |
| makeBlink(); |
| } else { |
| if (mError != null) { |
| hideError(); |
| } |
| // Don't leave us in the middle of a batch edit. |
| mTextView.onEndBatchEdit(); |
| |
| if (mTextView.isInExtractedMode()) { |
| hideCursorAndSpanControllers(); |
| stopTextActionModeWithPreservingSelection(); |
| } else { |
| hideCursorAndSpanControllers(); |
| if (mTextView.isTemporarilyDetached()) { |
| stopTextActionModeWithPreservingSelection(); |
| } else { |
| stopTextActionMode(); |
| } |
| downgradeEasyCorrectionSpans(); |
| } |
| // No need to create the controller |
| if (mSelectionModifierCursorController != null) { |
| mSelectionModifierCursorController.resetTouchOffsets(); |
| } |
| } |
| } |
| |
| /** |
| * Downgrades to simple suggestions all the easy correction spans that are not a spell check |
| * span. |
| */ |
| private void downgradeEasyCorrectionSpans() { |
| CharSequence text = mTextView.getText(); |
| if (text instanceof Spannable) { |
| Spannable spannable = (Spannable) text; |
| SuggestionSpan[] suggestionSpans = spannable.getSpans(0, |
| spannable.length(), SuggestionSpan.class); |
| for (int i = 0; i < suggestionSpans.length; i++) { |
| int flags = suggestionSpans[i].getFlags(); |
| if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0 |
| && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) { |
| flags &= ~SuggestionSpan.FLAG_EASY_CORRECT; |
| suggestionSpans[i].setFlags(flags); |
| } |
| } |
| } |
| } |
| |
| void sendOnTextChanged(int start, int after) { |
| updateSpellCheckSpans(start, start + after, false); |
| |
| // Flip flag to indicate the word iterator needs to have the text reset. |
| mUpdateWordIteratorText = true; |
| |
| // Hide the controllers as soon as text is modified (typing, procedural...) |
| // We do not hide the span controllers, since they can be added when a new text is |
| // inserted into the text view (voice IME). |
| hideCursorControllers(); |
| // Reset drag accelerator. |
| if (mSelectionModifierCursorController != null) { |
| mSelectionModifierCursorController.resetTouchOffsets(); |
| } |
| stopTextActionMode(); |
| } |
| |
| private int getLastTapPosition() { |
| // No need to create the controller at that point, no last tap position saved |
| if (mSelectionModifierCursorController != null) { |
| int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); |
| if (lastTapPosition >= 0) { |
| // Safety check, should not be possible. |
| if (lastTapPosition > mTextView.getText().length()) { |
| lastTapPosition = mTextView.getText().length(); |
| } |
| return lastTapPosition; |
| } |
| } |
| |
| return -1; |
| } |
| |
| void onWindowFocusChanged(boolean hasWindowFocus) { |
| if (hasWindowFocus) { |
| if (mBlink != null) { |
| mBlink.uncancel(); |
| makeBlink(); |
| } |
| final InputMethodManager imm = InputMethodManager.peekInstance(); |
| if (mTextView.hasSelection() && !extractedTextModeWillBeStarted()) { |
| refreshTextActionMode(); |
| } |
| } else { |
| if (mBlink != null) { |
| mBlink.cancel(); |
| } |
| if (mInputContentType != null) { |
| mInputContentType.enterDown = false; |
| } |
| // Order matters! Must be done before onParentLostFocus to rely on isShowingUp |
| hideCursorAndSpanControllers(); |
| stopTextActionModeWithPreservingSelection(); |
| if (mSuggestionsPopupWindow != null) { |
| mSuggestionsPopupWindow.onParentLostFocus(); |
| } |
| |
| // Don't leave us in the middle of a batch edit. Same as in onFocusChanged |
| ensureEndedBatchEdit(); |
| } |
| } |
| |
| private void updateTapState(MotionEvent event) { |
| final int action = event.getActionMasked(); |
| if (action == MotionEvent.ACTION_DOWN) { |
| final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); |
| // Detect double tap and triple click. |
| if (((mTapState == TAP_STATE_FIRST_TAP) |
| || ((mTapState == TAP_STATE_DOUBLE_TAP) && isMouse)) |
| && (SystemClock.uptimeMillis() - mLastTouchUpTime) <= |
| ViewConfiguration.getDoubleTapTimeout()) { |
| if (mTapState == TAP_STATE_FIRST_TAP) { |
| mTapState = TAP_STATE_DOUBLE_TAP; |
| } else { |
| mTapState = TAP_STATE_TRIPLE_CLICK; |
| } |
| } else { |
| mTapState = TAP_STATE_FIRST_TAP; |
| } |
| } |
| if (action == MotionEvent.ACTION_UP) { |
| mLastTouchUpTime = SystemClock.uptimeMillis(); |
| } |
| } |
| |
| private boolean shouldFilterOutTouchEvent(MotionEvent event) { |
| if (!event.isFromSource(InputDevice.SOURCE_MOUSE)) { |
| return false; |
| } |
| final boolean primaryButtonStateChanged = |
| ((mLastButtonState ^ event.getButtonState()) & MotionEvent.BUTTON_PRIMARY) != 0; |
| final int action = event.getActionMasked(); |
| if ((action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_UP) |
| && !primaryButtonStateChanged) { |
| return true; |
| } |
| if (action == MotionEvent.ACTION_MOVE |
| && !event.isButtonPressed(MotionEvent.BUTTON_PRIMARY)) { |
| return true; |
| } |
| return false; |
| } |
| |
| void onTouchEvent(MotionEvent event) { |
| final boolean filterOutEvent = shouldFilterOutTouchEvent(event); |
| mLastButtonState = event.getButtonState(); |
| if (filterOutEvent) { |
| if (event.getActionMasked() == MotionEvent.ACTION_UP) { |
| mDiscardNextActionUp = true; |
| } |
| return; |
| } |
| updateTapState(event); |
| updateFloatingToolbarVisibility(event); |
| |
| if (hasSelectionController()) { |
| getSelectionController().onTouchEvent(event); |
| } |
| |
| if (mShowSuggestionRunnable != null) { |
| mTextView.removeCallbacks(mShowSuggestionRunnable); |
| mShowSuggestionRunnable = null; |
| } |
| |
| if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { |
| mLastDownPositionX = event.getX(); |
| mLastDownPositionY = event.getY(); |
| |
| // Reset this state; it will be re-set if super.onTouchEvent |
| // causes focus to move to the view. |
| mTouchFocusSelected = false; |
| mIgnoreActionUpEvent = false; |
| } |
| } |
| |
| private void updateFloatingToolbarVisibility(MotionEvent event) { |
| if (mTextActionMode != null) { |
| switch (event.getActionMasked()) { |
| case MotionEvent.ACTION_MOVE: |
| hideFloatingToolbar(); |
| break; |
| case MotionEvent.ACTION_UP: // fall through |
| case MotionEvent.ACTION_CANCEL: |
| showFloatingToolbar(); |
| } |
| } |
| } |
| |
| private void hideFloatingToolbar() { |
| if (mTextActionMode != null) { |
| mTextView.removeCallbacks(mShowFloatingToolbar); |
| mTextActionMode.hide(ActionMode.DEFAULT_HIDE_DURATION); |
| } |
| } |
| |
| private void showFloatingToolbar() { |
| if (mTextActionMode != null) { |
| // Delay "show" so it doesn't interfere with click confirmations |
| // or double-clicks that could "dismiss" the floating toolbar. |
| int delay = ViewConfiguration.getDoubleTapTimeout(); |
| mTextView.postDelayed(mShowFloatingToolbar, delay); |
| } |
| } |
| |
| public void beginBatchEdit() { |
| mInBatchEditControllers = true; |
| final InputMethodState ims = mInputMethodState; |
| if (ims != null) { |
| int nesting = ++ims.mBatchEditNesting; |
| if (nesting == 1) { |
| ims.mCursorChanged = false; |
| ims.mChangedDelta = 0; |
| if (ims.mContentChanged) { |
| // We already have a pending change from somewhere else, |
| // so turn this into a full update. |
| ims.mChangedStart = 0; |
| ims.mChangedEnd = mTextView.getText().length(); |
| } else { |
| ims.mChangedStart = EXTRACT_UNKNOWN; |
| ims.mChangedEnd = EXTRACT_UNKNOWN; |
| ims.mContentChanged = false; |
| } |
| mUndoInputFilter.beginBatchEdit(); |
| mTextView.onBeginBatchEdit(); |
| } |
| } |
| } |
| |
| public void endBatchEdit() { |
| mInBatchEditControllers = false; |
| final InputMethodState ims = mInputMethodState; |
| if (ims != null) { |
| int nesting = --ims.mBatchEditNesting; |
| if (nesting == 0) { |
| finishBatchEdit(ims); |
| } |
| } |
| } |
| |
| void ensureEndedBatchEdit() { |
| final InputMethodState ims = mInputMethodState; |
| if (ims != null && ims.mBatchEditNesting != 0) { |
| ims.mBatchEditNesting = 0; |
| finishBatchEdit(ims); |
| } |
| } |
| |
| void finishBatchEdit(final InputMethodState ims) { |
| mTextView.onEndBatchEdit(); |
| mUndoInputFilter.endBatchEdit(); |
| |
| if (ims.mContentChanged || ims.mSelectionModeChanged) { |
| mTextView.updateAfterEdit(); |
| reportExtractedText(); |
| } else if (ims.mCursorChanged) { |
| // Cheesy way to get us to report the current cursor location. |
| mTextView.invalidateCursor(); |
| } |
| // sendUpdateSelection knows to avoid sending if the selection did |
| // not actually change. |
| sendUpdateSelection(); |
| } |
| |
| static final int EXTRACT_NOTHING = -2; |
| static final int EXTRACT_UNKNOWN = -1; |
| |
| boolean extractText(ExtractedTextRequest request, ExtractedText outText) { |
| return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, |
| EXTRACT_UNKNOWN, outText); |
| } |
| |
| private boolean extractTextInternal(@Nullable ExtractedTextRequest request, |
| int partialStartOffset, int partialEndOffset, int delta, |
| @Nullable ExtractedText outText) { |
| if (request == null || outText == null) { |
| return false; |
| } |
| |
| final CharSequence content = mTextView.getText(); |
| if (content == null) { |
| return false; |
| } |
| |
| if (partialStartOffset != EXTRACT_NOTHING) { |
| final int N = content.length(); |
| if (partialStartOffset < 0) { |
| outText.partialStartOffset = outText.partialEndOffset = -1; |
| partialStartOffset = 0; |
| partialEndOffset = N; |
| } else { |
| // Now use the delta to determine the actual amount of text |
| // we need. |
| partialEndOffset += delta; |
| // Adjust offsets to ensure we contain full spans. |
| if (content instanceof Spanned) { |
| Spanned spanned = (Spanned)content; |
| Object[] spans = spanned.getSpans(partialStartOffset, |
| partialEndOffset, ParcelableSpan.class); |
| int i = spans.length; |
| while (i > 0) { |
| i--; |
| int j = spanned.getSpanStart(spans[i]); |
| if (j < partialStartOffset) partialStartOffset = j; |
| j = spanned.getSpanEnd(spans[i]); |
| if (j > partialEndOffset) partialEndOffset = j; |
| } |
| } |
| outText.partialStartOffset = partialStartOffset; |
| outText.partialEndOffset = partialEndOffset - delta; |
| |
| if (partialStartOffset > N) { |
| partialStartOffset = N; |
| } else if (partialStartOffset < 0) { |
| partialStartOffset = 0; |
| } |
| if (partialEndOffset > N) { |
| partialEndOffset = N; |
| } else if (partialEndOffset < 0) { |
| partialEndOffset = 0; |
| } |
| } |
| if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) { |
| outText.text = content.subSequence(partialStartOffset, |
| partialEndOffset); |
| } else { |
| outText.text = TextUtils.substring(content, partialStartOffset, |
| partialEndOffset); |
| } |
| } else { |
| outText.partialStartOffset = 0; |
| outText.partialEndOffset = 0; |
| outText.text = ""; |
| } |
| outText.flags = 0; |
| if (MetaKeyKeyListener.getMetaState(content, MetaKeyKeyListener.META_SELECTING) != 0) { |
| outText.flags |= ExtractedText.FLAG_SELECTING; |
| } |
| if (mTextView.isSingleLine()) { |
| outText.flags |= ExtractedText.FLAG_SINGLE_LINE; |
| } |
| outText.startOffset = 0; |
| outText.selectionStart = mTextView.getSelectionStart(); |
| outText.selectionEnd = mTextView.getSelectionEnd(); |
| return true; |
| } |
| |
| boolean reportExtractedText() { |
| final Editor.InputMethodState ims = mInputMethodState; |
| if (ims != null) { |
| final boolean contentChanged = ims.mContentChanged; |
| if (contentChanged || ims.mSelectionModeChanged) { |
| ims.mContentChanged = false; |
| ims.mSelectionModeChanged = false; |
| final ExtractedTextRequest req = ims.mExtractedTextRequest; |
| if (req != null) { |
| InputMethodManager imm = InputMethodManager.peekInstance(); |
| if (imm != null) { |
| if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, |
| "Retrieving extracted start=" + ims.mChangedStart + |
| " end=" + ims.mChangedEnd + |
| " delta=" + ims.mChangedDelta); |
| if (ims.mChangedStart < 0 && !contentChanged) { |
| ims.mChangedStart = EXTRACT_NOTHING; |
| } |
| if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, |
| ims.mChangedDelta, ims.mExtractedText)) { |
| if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, |
| "Reporting extracted start=" + |
| ims.mExtractedText.partialStartOffset + |
| " end=" + ims.mExtractedText.partialEndOffset + |
| ": " + ims.mExtractedText.text); |
| |
| imm.updateExtractedText(mTextView, req.token, ims.mExtractedText); |
| ims.mChangedStart = EXTRACT_UNKNOWN; |
| ims.mChangedEnd = EXTRACT_UNKNOWN; |
| ims.mChangedDelta = 0; |
| ims.mContentChanged = false; |
| return true; |
| } |
| } |
| } |
| } |
| } |
| return false; |
| } |
| |
| private void sendUpdateSelection() { |
| if (null != mInputMethodState && mInputMethodState.mBatchEditNesting <= 0) { |
| final InputMethodManager imm = InputMethodManager.peekInstance(); |
| if (null != imm) { |
| final int selectionStart = mTextView.getSelectionStart(); |
| final int selectionEnd = mTextView.getSelectionEnd(); |
| int candStart = -1; |
| int candEnd = -1; |
| if (mTextView.getText() instanceof Spannable) { |
| final Spannable sp = (Spannable) mTextView.getText(); |
| candStart = EditableInputConnection.getComposingSpanStart(sp); |
| candEnd = EditableInputConnection.getComposingSpanEnd(sp); |
| } |
| // InputMethodManager#updateSelection skips sending the message if |
| // none of the parameters have changed since the last time we called it. |
| imm.updateSelection(mTextView, |
| selectionStart, selectionEnd, candStart, candEnd); |
| } |
| } |
| } |
| |
| void onDraw(Canvas canvas, Layout layout, Path highlight, Paint highlightPaint, |
| int cursorOffsetVertical) { |
| final int selectionStart = mTextView.getSelectionStart(); |
| final int selectionEnd = mTextView.getSelectionEnd(); |
| |
| final InputMethodState ims = mInputMethodState; |
| if (ims != null && ims.mBatchEditNesting == 0) { |
| InputMethodManager imm = InputMethodManager.peekInstance(); |
| if (imm != null) { |
| if (imm.isActive(mTextView)) { |
| if (ims.mContentChanged || ims.mSelectionModeChanged) { |
| // We are in extract mode and the content has changed |
| // in some way... just report complete new text to the |
| // input method. |
| reportExtractedText(); |
| } |
| } |
| } |
| } |
| |
| if (mCorrectionHighlighter != null) { |
| mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); |
| } |
| |
| if (highlight != null && selectionStart == selectionEnd && mCursorCount > 0) { |
| drawCursor(canvas, cursorOffsetVertical); |
| // Rely on the drawable entirely, do not draw the cursor line. |
| // Has to be done after the IMM related code above which relies on the highlight. |
| highlight = null; |
| } |
| |
| if (mTextView.canHaveDisplayList() && canvas.isHardwareAccelerated()) { |
| drawHardwareAccelerated(canvas, layout, highlight, highlightPaint, |
| cursorOffsetVertical); |
| } else { |
| layout.draw(canvas, highlight, highlightPaint, cursorOffsetVertical); |
| } |
| } |
| |
| private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight, |
| Paint highlightPaint, int cursorOffsetVertical) { |
| final long lineRange = layout.getLineRangeForDraw(canvas); |
| int firstLine = TextUtils.unpackRangeStartFromLong(lineRange); |
| int lastLine = TextUtils.unpackRangeEndFromLong(lineRange); |
| if (lastLine < 0) return; |
| |
| layout.drawBackground(canvas, highlight, highlightPaint, cursorOffsetVertical, |
| firstLine, lastLine); |
| |
| if (layout instanceof DynamicLayout) { |
| if (mTextRenderNodes == null) { |
| mTextRenderNodes = ArrayUtils.emptyArray(TextRenderNode.class); |
| } |
| |
| DynamicLayout dynamicLayout = (DynamicLayout) layout; |
| int[] blockEndLines = dynamicLayout.getBlockEndLines(); |
| int[] blockIndices = dynamicLayout.getBlockIndices(); |
| final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); |
| final int indexFirstChangedBlock = dynamicLayout.getIndexFirstChangedBlock(); |
| |
| int endOfPreviousBlock = -1; |
| int searchStartIndex = 0; |
| for (int i = 0; i < numberOfBlocks; i++) { |
| int blockEndLine = blockEndLines[i]; |
| int blockIndex = blockIndices[i]; |
| |
| final boolean blockIsInvalid = blockIndex == DynamicLayout.INVALID_BLOCK_INDEX; |
| if (blockIsInvalid) { |
| blockIndex = getAvailableDisplayListIndex(blockIndices, numberOfBlocks, |
| searchStartIndex); |
| // Note how dynamic layout's internal block indices get updated from Editor |
| blockIndices[i] = blockIndex; |
| if (mTextRenderNodes[blockIndex] != null) { |
| mTextRenderNodes[blockIndex].isDirty = true; |
| } |
| searchStartIndex = blockIndex + 1; |
| } |
| |
| if (mTextRenderNodes[blockIndex] == null) { |
| mTextRenderNodes[blockIndex] = |
| new TextRenderNode("Text " + blockIndex); |
| } |
| |
| final boolean blockDisplayListIsInvalid = mTextRenderNodes[blockIndex].needsRecord(); |
| RenderNode blockDisplayList = mTextRenderNodes[blockIndex].renderNode; |
| if (i >= indexFirstChangedBlock || blockDisplayListIsInvalid) { |
| final int blockBeginLine = endOfPreviousBlock + 1; |
| final int top = layout.getLineTop(blockBeginLine); |
| final int bottom = layout.getLineBottom(blockEndLine); |
| int left = 0; |
| int right = mTextView.getWidth(); |
| if (mTextView.getHorizontallyScrolling()) { |
| float min = Float.MAX_VALUE; |
| float max = Float.MIN_VALUE; |
| for (int line = blockBeginLine; line <= blockEndLine; line++) { |
| min = Math.min(min, layout.getLineLeft(line)); |
| max = Math.max(max, layout.getLineRight(line)); |
| } |
| left = (int) min; |
| right = (int) (max + 0.5f); |
| } |
| |
| // Rebuild display list if it is invalid |
| if (blockDisplayListIsInvalid) { |
| final DisplayListCanvas displayListCanvas = blockDisplayList.start( |
| right - left, bottom - top); |
| try { |
| // drawText is always relative to TextView's origin, this translation |
| // brings this range of text back to the top left corner of the viewport |
| displayListCanvas.translate(-left, -top); |
| layout.drawText(displayListCanvas, blockBeginLine, blockEndLine); |
| mTextRenderNodes[blockIndex].isDirty = false; |
| // No need to untranslate, previous context is popped after |
| // drawDisplayList |
| } finally { |
| blockDisplayList.end(displayListCanvas); |
| // Same as drawDisplayList below, handled by our TextView's parent |
| blockDisplayList.setClipToBounds(false); |
| } |
| } |
| |
| // Valid disply list whose index is >= indexFirstChangedBlock |
| // only needs to update its drawing location. |
| blockDisplayList.setLeftTopRightBottom(left, top, right, bottom); |
| } |
| |
| ((DisplayListCanvas) canvas).drawRenderNode(blockDisplayList); |
| |
| endOfPreviousBlock = blockEndLine; |
| } |
| |
| dynamicLayout.setIndexFirstChangedBlock(numberOfBlocks); |
| } else { |
| // Boring layout is used for empty and hint text |
| layout.drawText(canvas, firstLine, lastLine); |
| } |
| } |
| |
| private int getAvailableDisplayListIndex(int[] blockIndices, int numberOfBlocks, |
| int searchStartIndex) { |
| int length = mTextRenderNodes.length; |
| for (int i = searchStartIndex; i < length; i++) { |
| boolean blockIndexFound = false; |
| for (int j = 0; j < numberOfBlocks; j++) { |
| if (blockIndices[j] == i) { |
| blockIndexFound = true; |
| break; |
| } |
| } |
| if (blockIndexFound) continue; |
| return i; |
| } |
| |
| // No available index found, the pool has to grow |
| mTextRenderNodes = GrowingArrayUtils.append(mTextRenderNodes, length, null); |
| return length; |
| } |
| |
| private void drawCursor(Canvas canvas, int cursorOffsetVertical) { |
| final boolean translate = cursorOffsetVertical != 0; |
| if (translate) canvas.translate(0, cursorOffsetVertical); |
| for (int i = 0; i < mCursorCount; i++) { |
| mCursorDrawable[i].draw(canvas); |
| } |
| if (translate) canvas.translate(0, -cursorOffsetVertical); |
| } |
| |
| void invalidateHandlesAndActionMode() { |
| if (mSelectionModifierCursorController != null) { |
| mSelectionModifierCursorController.invalidateHandles(); |
| } |
| if (mInsertionPointCursorController != null) { |
| mInsertionPointCursorController.invalidateHandle(); |
| } |
| if (mTextActionMode != null) { |
| mTextActionMode.invalidate(); |
| } |
| } |
| |
| /** |
| * Invalidates all the sub-display lists that overlap the specified character range |
| */ |
| void invalidateTextDisplayList(Layout layout, int start, int end) { |
| if (mTextRenderNodes != null && layout instanceof DynamicLayout) { |
| final int firstLine = layout.getLineForOffset(start); |
| final int lastLine = layout.getLineForOffset(end); |
| |
| DynamicLayout dynamicLayout = (DynamicLayout) layout; |
| int[] blockEndLines = dynamicLayout.getBlockEndLines(); |
| int[] blockIndices = dynamicLayout.getBlockIndices(); |
| final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); |
| |
| int i = 0; |
| // Skip the blocks before firstLine |
| while (i < numberOfBlocks) { |
| if (blockEndLines[i] >= firstLine) break; |
| i++; |
| } |
| |
| // Invalidate all subsequent blocks until lastLine is passed |
| while (i < numberOfBlocks) { |
| final int blockIndex = blockIndices[i]; |
| if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX) { |
| mTextRenderNodes[blockIndex].isDirty = true; |
| } |
| if (blockEndLines[i] >= lastLine) break; |
| i++; |
| } |
| } |
| } |
| |
| void invalidateTextDisplayList() { |
| if (mTextRenderNodes != null) { |
| for (int i = 0; i < mTextRenderNodes.length; i++) { |
| if (mTextRenderNodes[i] != null) mTextRenderNodes[i].isDirty = true; |
| } |
| } |
| } |
| |
| void updateCursorsPositions() { |
| if (mTextView.mCursorDrawableRes == 0) { |
| mCursorCount = 0; |
| return; |
| } |
| |
| Layout layout = mTextView.getLayout(); |
| final int offset = mTextView.getSelectionStart(); |
| final int line = layout.getLineForOffset(offset); |
| final int top = layout.getLineTop(line); |
| final int bottom = layout.getLineTop(line + 1); |
| |
| mCursorCount = layout.isLevelBoundary(offset) ? 2 : 1; |
| |
| int middle = bottom; |
| if (mCursorCount == 2) { |
| // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)} |
| middle = (top + bottom) >> 1; |
| } |
| |
| boolean clamped = layout.shouldClampCursor(line); |
| updateCursorPosition(0, top, middle, layout.getPrimaryHorizontal(offset, clamped)); |
| |
| if (mCursorCount == 2) { |
| updateCursorPosition(1, middle, bottom, layout.getSecondaryHorizontal(offset, clamped)); |
| } |
| } |
| |
| void refreshTextActionMode() { |
| if (extractedTextModeWillBeStarted()) { |
| mRestartActionModeOnNextRefresh = false; |
| return; |
| } |
| final boolean hasSelection = mTextView.hasSelection(); |
| final SelectionModifierCursorController selectionController = getSelectionController(); |
| final InsertionPointCursorController insertionController = getInsertionController(); |
| if ((selectionController != null && selectionController.isCursorBeingModified()) |
| || (insertionController != null && insertionController.isCursorBeingModified())) { |
| // ActionMode should be managed by the currently active cursor controller. |
| mRestartActionModeOnNextRefresh = false; |
| return; |
| } |
| if (hasSelection) { |
| hideInsertionPointCursorController(); |
| if (mTextActionMode == null) { |
| if (mRestartActionModeOnNextRefresh) { |
| // To avoid distraction, newly start action mode only when selection action |
| // mode is being restarted. |
| startSelectionActionMode(); |
| } |
| } else if (selectionController == null || !selectionController.isActive()) { |
| // Insertion action mode is active. Avoid dismissing the selection. |
| stopTextActionModeWithPreservingSelection(); |
| startSelectionActionMode(); |
| } else { |
| mTextActionMode.invalidateContentRect(); |
| } |
| } else { |
| // Insertion action mode is started only when insertion controller is explicitly |
| // activated. |
| if (insertionController == null || !insertionController.isActive()) { |
| stopTextActionMode(); |
| } else if (mTextActionMode != null) { |
| mTextActionMode.invalidateContentRect(); |
| } |
| } |
| mRestartActionModeOnNextRefresh = false; |
| } |
| |
| /** |
| * Start an Insertion action mode. |
| */ |
| void startInsertionActionMode() { |
| if (mInsertionActionModeRunnable != null) { |
| mTextView.removeCallbacks(mInsertionActionModeRunnable); |
| } |
| if (extractedTextModeWillBeStarted()) { |
| return; |
| } |
| stopTextActionMode(); |
| |
| ActionMode.Callback actionModeCallback = |
| new TextActionModeCallback(false /* hasSelection */); |
| mTextActionMode = mTextView.startActionMode( |
| actionModeCallback, ActionMode.TYPE_FLOATING); |
| if (mTextActionMode != null && getInsertionController() != null) { |
| getInsertionController().show(); |
| } |
| } |
| |
| /** |
| * Starts a Selection Action Mode with the current selection and ensures the selection handles |
| * are shown if there is a selection. This should be used when the mode is started from a |
| * non-touch event. |
| * |
| * @return true if the selection mode was actually started. |
| */ |
| boolean startSelectionActionMode() { |
| boolean selectionStarted = startSelectionActionModeInternal(); |
| if (selectionStarted) { |
| getSelectionController().show(); |
| } |
| mRestartActionModeOnNextRefresh = false; |
| return selectionStarted; |
| } |
| |
| /** |
| * If the TextView allows text selection, selects the current word when no existing selection |
| * was available and starts a drag. |
| * |
| * @return true if the drag was started. |
| */ |
| private boolean selectCurrentWordAndStartDrag() { |
| if (mInsertionActionModeRunnable != null) { |
| mTextView.removeCallbacks(mInsertionActionModeRunnable); |
| } |
| if (extractedTextModeWillBeStarted()) { |
| return false; |
| } |
| if (!checkField()) { |
| return false; |
| } |
| if (!mTextView.hasSelection() && !selectCurrentWord()) { |
| // No selection and cannot select a word. |
| return false; |
| } |
| stopTextActionModeWithPreservingSelection(); |
| getSelectionController().enterDrag( |
| SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_WORD); |
| return true; |
| } |
| |
| /** |
| * Checks whether a selection can be performed on the current TextView. |
| * |
| * @return true if a selection can be performed |
| */ |
| boolean checkField() { |
| if (!mTextView.canSelectText() || !mTextView.requestFocus()) { |
| Log.w(TextView.LOG_TAG, |
| "TextView does not support text selection. Selection cancelled."); |
| return false; |
| } |
| return true; |
| } |
| |
| private boolean startSelectionActionModeInternal() { |
| if (extractedTextModeWillBeStarted()) { |
| return false; |
| } |
| if (mTextActionMode != null) { |
| // Text action mode is already started |
| mTextActionMode.invalidate(); |
| return false; |
| } |
| |
| if (!checkField() || !mTextView.hasSelection()) { |
| return false; |
| } |
| |
| ActionMode.Callback actionModeCallback = |
| new TextActionModeCallback(true /* hasSelection */); |
| mTextActionMode = mTextView.startActionMode(actionModeCallback, ActionMode.TYPE_FLOATING); |
| |
| final boolean selectionStarted = mTextActionMode != null; |
| if (selectionStarted && !mTextView.isTextSelectable() && mShowSoftInputOnFocus) { |
| // Show the IME to be able to replace text, except when selecting non editable text. |
| final InputMethodManager imm = InputMethodManager.peekInstance(); |
| if (imm != null) { |
| imm.showSoftInput(mTextView, 0, null); |
| } |
| } |
| return selectionStarted; |
| } |
| |
| boolean extractedTextModeWillBeStarted() { |
| if (!(mTextView.isInExtractedMode())) { |
| final InputMethodManager imm = InputMethodManager.peekInstance(); |
| return imm != null && imm.isFullscreenMode(); |
| } |
| return false; |
| } |
| |
| /** |
| * @return <code>true</code> if it's reasonable to offer to show suggestions depending on |
| * the current cursor position or selection range. This method is consistent with the |
| * method to show suggestions {@link SuggestionsPopupWindow#updateSuggestions}. |
| */ |
| private boolean shouldOfferToShowSuggestions() { |
| CharSequence text = mTextView.getText(); |
| if (!(text instanceof Spannable)) return false; |
| |
| final Spannable spannable = (Spannable) text; |
| final int selectionStart = mTextView.getSelectionStart(); |
| final int selectionEnd = mTextView.getSelectionEnd(); |
| final SuggestionSpan[] suggestionSpans = spannable.getSpans(selectionStart, selectionEnd, |
| SuggestionSpan.class); |
| if (suggestionSpans.length == 0) { |
| return false; |
| } |
| if (selectionStart == selectionEnd) { |
| // Spans overlap the cursor. |
| for (int i = 0; i < suggestionSpans.length; i++) { |
| if (suggestionSpans[i].getSuggestions().length > 0) { |
| return true; |
| } |
| } |
| return false; |
| } |
| int minSpanStart = mTextView.getText().length(); |
| int maxSpanEnd = 0; |
| int unionOfSpansCoveringSelectionStartStart = mTextView.getText().length(); |
| int unionOfSpansCoveringSelectionStartEnd = 0; |
| boolean hasValidSuggestions = false; |
| for (int i = 0; i < suggestionSpans.length; i++) { |
| final int spanStart = spannable.getSpanStart(suggestionSpans[i]); |
| final int spanEnd = spannable.getSpanEnd(suggestionSpans[i]); |
| minSpanStart = Math.min(minSpanStart, spanStart); |
| maxSpanEnd = Math.max(maxSpanEnd, spanEnd); |
| if (selectionStart < spanStart || selectionStart > spanEnd) { |
| // The span doesn't cover the current selection start point. |
| continue; |
| } |
| hasValidSuggestions = |
| hasValidSuggestions || suggestionSpans[i].getSuggestions().length > 0; |
| unionOfSpansCoveringSelectionStartStart = |
| Math.min(unionOfSpansCoveringSelectionStartStart, spanStart); |
| unionOfSpansCoveringSelectionStartEnd = |
| Math.max(unionOfSpansCoveringSelectionStartEnd, spanEnd); |
| } |
| if (!hasValidSuggestions) { |
| return false; |
| } |
| if (unionOfSpansCoveringSelectionStartStart >= unionOfSpansCoveringSelectionStartEnd) { |
| // No spans cover the selection start point. |
| return false; |
| } |
| if (minSpanStart < unionOfSpansCoveringSelectionStartStart |
| || maxSpanEnd > unionOfSpansCoveringSelectionStartEnd) { |
| // There is a span that is not covered by the union. In this case, we soouldn't offer |
| // to show suggestions as it's confusing. |
| return false; |
| } |
| return true; |
| } |
| |
| /** |
| * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with |
| * {@link SuggestionSpan#FLAG_EASY_CORRECT} set. |
| */ |
| private boolean isCursorInsideEasyCorrectionSpan() { |
| Spannable spannable = (Spannable) mTextView.getText(); |
| SuggestionSpan[] suggestionSpans = spannable.getSpans(mTextView.getSelectionStart(), |
| mTextView.getSelectionEnd(), SuggestionSpan.class); |
| for (int i = 0; i < suggestionSpans.length; i++) { |
| if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| void onTouchUpEvent(MotionEvent event) { |
| boolean selectAllGotFocus = mSelectAllOnFocus && mTextView.didTouchFocusSelect(); |
| hideCursorAndSpanControllers(); |
| stopTextActionMode(); |
| CharSequence text = mTextView.getText(); |
| if (!selectAllGotFocus && text.length() > 0) { |
| // Move cursor |
| final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); |
| Selection.setSelection((Spannable) text, offset); |
| if (mSpellChecker != null) { |
| // When the cursor moves, the word that was typed may need spell check |
| mSpellChecker.onSelectionChanged(); |
| } |
| |
| if (!extractedTextModeWillBeStarted()) { |
| if (isCursorInsideEasyCorrectionSpan()) { |
| // Cancel the single tap delayed runnable. |
| if (mInsertionActionModeRunnable != null) { |
| mTextView.removeCallbacks(mInsertionActionModeRunnable); |
| } |
| |
| mShowSuggestionRunnable = new Runnable() { |
| public void run() { |
| replace(); |
| } |
| }; |
| // removeCallbacks is performed on every touch |
| mTextView.postDelayed(mShowSuggestionRunnable, |
| ViewConfiguration.getDoubleTapTimeout()); |
| } else if (hasInsertionController()) { |
| getInsertionController().show(); |
| } |
| } |
| } |
| } |
| |
| protected void stopTextActionMode() { |
| if (mTextActionMode != null) { |
| // This will hide the mSelectionModifierCursorController |
| mTextActionMode.finish(); |
| } |
| } |
| |
| private void stopTextActionModeWithPreservingSelection() { |
| if (mTextActionMode != null) { |
| mRestartActionModeOnNextRefresh = true; |
| } |
| mPreserveSelection = true; |
| stopTextActionMode(); |
| mPreserveSelection = false; |
| } |
| |
| /** |
| * @return True if this view supports insertion handles. |
| */ |
| boolean hasInsertionController() { |
| return mInsertionControllerEnabled; |
| } |
| |
| /** |
| * @return True if this view supports selection handles. |
| */ |
| boolean hasSelectionController() { |
| return mSelectionControllerEnabled; |
| } |
| |
| InsertionPointCursorController getInsertionController() { |
| if (!mInsertionControllerEnabled) { |
| return null; |
| } |
| |
| if (mInsertionPointCursorController == null) { |
| mInsertionPointCursorController = new InsertionPointCursorController(); |
| |
| final ViewTreeObserver observer = mTextView.getViewTreeObserver(); |
| observer.addOnTouchModeChangeListener(mInsertionPointCursorController); |
| } |
| |
| return mInsertionPointCursorController; |
| } |
| |
| SelectionModifierCursorController getSelectionController() { |
| if (!mSelectionControllerEnabled) { |
| return null; |
| } |
| |
| if (mSelectionModifierCursorController == null) { |
| mSelectionModifierCursorController = new SelectionModifierCursorController(); |
| |
| final ViewTreeObserver observer = mTextView.getViewTreeObserver(); |
| observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); |
| } |
| |
| return mSelectionModifierCursorController; |
| } |
| |
| /** |
| * @hide |
| */ |
| @VisibleForTesting |
| public Drawable[] getCursorDrawable() { |
| return mCursorDrawable; |
| } |
| |
| private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) { |
| if (mCursorDrawable[cursorIndex] == null) |
| mCursorDrawable[cursorIndex] = mTextView.getContext().getDrawable( |
| mTextView.mCursorDrawableRes); |
| final Drawable drawable = mCursorDrawable[cursorIndex]; |
| final int left = clampHorizontalPosition(drawable, horizontal); |
| final int width = drawable.getIntrinsicWidth(); |
| drawable.setBounds(left, top - mTempRect.top, left + width, |
| bottom + mTempRect.bottom); |
| } |
| |
| /** |
| * Return clamped position for the drawable. If the drawable is within the boundaries of the |
| * view, then it is offset with the left padding of the cursor drawable. If the drawable is at |
| * the beginning or the end of the text then its drawable edge is aligned with left or right of |
| * the view boundary. If the drawable is null, horizontal parameter is aligned to left or right |
| * of the view. |
| * |
| * @param drawable Drawable. Can be null. |
| * @param horizontal Horizontal position for the drawable. |
| * @return The clamped horizontal position for the drawable. |
| */ |
| private int clampHorizontalPosition(@Nullable final Drawable drawable, float horizontal) { |
| horizontal = Math.max(0.5f, horizontal - 0.5f); |
| if (mTempRect == null) mTempRect = new Rect(); |
| |
| int drawableWidth = 0; |
| if (drawable != null) { |
| drawable.getPadding(mTempRect); |
| drawableWidth = drawable.getIntrinsicWidth(); |
| } else { |
| mTempRect.setEmpty(); |
| } |
| |
| int scrollX = mTextView.getScrollX(); |
| float horizontalDiff = horizontal - scrollX; |
| int viewClippedWidth = mTextView.getWidth() - mTextView.getCompoundPaddingLeft() |
| - mTextView.getCompoundPaddingRight(); |
| |
| final int left; |
| if (horizontalDiff >= (viewClippedWidth - 1f)) { |
| // at the rightmost position |
| left = viewClippedWidth + scrollX - (drawableWidth - mTempRect.right); |
| } else if (Math.abs(horizontalDiff) <= 1f || |
| (TextUtils.isEmpty(mTextView.getText()) |
| && (TextView.VERY_WIDE - scrollX) <= (viewClippedWidth + 1f) |
| && horizontal <= 1f)) { |
| // at the leftmost position |
| left = scrollX - mTempRect.left; |
| } else { |
| left = (int) horizontal - mTempRect.left; |
| } |
| return left; |
| } |
| |
| /** |
| * Called by the framework in response to a text auto-correction (such as fixing a typo using a |
| * a dictionary) from the current input method, provided by it calling |
| * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default |
| * implementation flashes the background of the corrected word to provide feedback to the user. |
| * |
| * @param info The auto correct info about the text that was corrected. |
| */ |
| public void onCommitCorrection(CorrectionInfo info) { |
| if (mCorrectionHighlighter == null) { |
| mCorrectionHighlighter = new CorrectionHighlighter(); |
| } else { |
| mCorrectionHighlighter.invalidate(false); |
| } |
| |
| mCorrectionHighlighter.highlight(info); |
| } |
| |
| void onScrollChanged() { |
| if (mPositionListener != null) { |
| mPositionListener.onScrollChanged(); |
| } |
| if (mTextActionMode != null) { |
| mTextActionMode.invalidateContentRect(); |
| } |
| } |
| |
| /** |
| * @return True when the TextView isFocused and has a valid zero-length selection (cursor). |
| */ |
| private boolean shouldBlink() { |
| if (!isCursorVisible() || !mTextView.isFocused()) return false; |
| |
| final int start = mTextView.getSelectionStart(); |
| if (start < 0) return false; |
| |
| final int end = mTextView.getSelectionEnd(); |
| if (end < 0) return false; |
| |
| return start == end; |
| } |
| |
| void makeBlink() { |
| if (shouldBlink()) { |
| mShowCursor = SystemClock.uptimeMillis(); |
| if (mBlink == null) mBlink = new Blink(); |
| mTextView.removeCallbacks(mBlink); |
| mTextView.postDelayed(mBlink, BLINK); |
| } else { |
| if (mBlink != null) mTextView.removeCallbacks(mBlink); |
| } |
| } |
| |
| private class Blink implements Runnable { |
| private boolean mCancelled; |
| |
| public void run() { |
| if (mCancelled) { |
| return; |
| } |
| |
| mTextView.removeCallbacks(this); |
| |
| if (shouldBlink()) { |
| if (mTextView.getLayout() != null) { |
| mTextView.invalidateCursorPath(); |
| } |
| |
| mTextView.postDelayed(this, BLINK); |
| } |
| } |
| |
| void cancel() { |
| if (!mCancelled) { |
| mTextView.removeCallbacks(this); |
| mCancelled = true; |
| } |
| } |
| |
| void uncancel() { |
| mCancelled = false; |
| } |
| } |
| |
| private DragShadowBuilder getTextThumbnailBuilder(int start, int end) { |
| TextView shadowView = (TextView) View.inflate(mTextView.getContext(), |
| com.android.internal.R.layout.text_drag_thumbnail, null); |
| |
| if (shadowView == null) { |
| throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); |
| } |
| |
| if (end - start > DRAG_SHADOW_MAX_TEXT_LENGTH) { |
| final long range = getCharClusterRange(start + DRAG_SHADOW_MAX_TEXT_LENGTH); |
| end = TextUtils.unpackRangeEndFromLong(range); |
| } |
| final CharSequence text = mTextView.getTransformedText(start, end); |
| shadowView.setText(text); |
| shadowView.setTextColor(mTextView.getTextColors()); |
| |
| shadowView.setTextAppearance(R.styleable.Theme_textAppearanceLarge); |
| shadowView.setGravity(Gravity.CENTER); |
| |
| shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, |
| ViewGroup.LayoutParams.WRAP_CONTENT)); |
| |
| final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); |
| shadowView.measure(size, size); |
| |
| shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight()); |
| shadowView.invalidate(); |
| return new DragShadowBuilder(shadowView); |
| } |
| |
| private static class DragLocalState { |
| public TextView sourceTextView; |
| public int start, end; |
| |
| public DragLocalState(TextView sourceTextView, int start, int end) { |
| this.sourceTextView = sourceTextView; |
| this.start = start; |
| this.end = end; |
| } |
| } |
| |
| void onDrop(DragEvent event) { |
| StringBuilder content = new StringBuilder(""); |
| |
| final DropPermissions dropPermissions = DropPermissions.obtain(event); |
| if (dropPermissions != null) { |
| dropPermissions.takeTransient(); |
| } |
| |
| try { |
| ClipData clipData = event.getClipData(); |
| final int itemCount = clipData.getItemCount(); |
| for (int i=0; i < itemCount; i++) { |
| Item item = clipData.getItemAt(i); |
| content.append(item.coerceToStyledText(mTextView.getContext())); |
| } |
| } |
| finally { |
| if (dropPermissions != null) { |
| dropPermissions.release(); |
| } |
| } |
| |
| final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); |
| |
| Object localState = event.getLocalState(); |
| DragLocalState dragLocalState = null; |
| if (localState instanceof DragLocalState) { |
| dragLocalState = (DragLocalState) localState; |
| } |
| boolean dragDropIntoItself = dragLocalState != null && |
| dragLocalState.sourceTextView == mTextView; |
| |
| if (dragDropIntoItself) { |
| if (offset >= dragLocalState.start && offset < dragLocalState.end) { |
| // A drop inside the original selection discards the drop. |
| return; |
| } |
| } |
| |
| final int originalLength = mTextView.getText().length(); |
| int min = offset; |
| int max = offset; |
| |
| Selection.setSelection((Spannable) mTextView.getText(), max); |
| mTextView.replaceText_internal(min, max, content); |
| |
| if (dragDropIntoItself) { |
| int dragSourceStart = dragLocalState.start; |
| int dragSourceEnd = dragLocalState.end; |
| if (max <= dragSourceStart) { |
| // Inserting text before selection has shifted positions |
| final int shift = mTextView.getText().length() - originalLength; |
| dragSourceStart += shift; |
| dragSourceEnd += shift; |
| } |
| |
| mUndoInputFilter.setForceMerge(true); |
| try { |
| // Delete original selection |
| mTextView.deleteText_internal(dragSourceStart, dragSourceEnd); |
| |
| // Make sure we do not leave two adjacent spaces. |
| final int prevCharIdx = Math.max(0, dragSourceStart - 1); |
| final int nextCharIdx = Math.min(mTextView.getText().length(), dragSourceStart + 1); |
| if (nextCharIdx > prevCharIdx + 1) { |
| CharSequence t = mTextView.getTransformedText(prevCharIdx, nextCharIdx); |
| if (Character.isSpaceChar(t.charAt(0)) && Character.isSpaceChar(t.charAt(1))) { |
| mTextView.deleteText_internal(prevCharIdx, prevCharIdx + 1); |
| } |
| } |
| } finally { |
| mUndoInputFilter.setForceMerge(false); |
| } |
| } |
| } |
| |
| public void addSpanWatchers(Spannable text) { |
| final int textLength = text.length(); |
| |
| if (mKeyListener != null) { |
| text.setSpan(mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); |
| } |
| |
| if (mSpanController == null) { |
| mSpanController = new SpanController(); |
| } |
| text.setSpan(mSpanController, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); |
| } |
| |
| void setContextMenuAnchor(float x, float y) { |
| mContextMenuAnchorX = x; |
| mContextMenuAnchorY = y; |
| } |
| |
| void onCreateContextMenu(ContextMenu menu) { |
| if (mIsBeingLongClicked || Float.isNaN(mContextMenuAnchorX) |
| || Float.isNaN(mContextMenuAnchorY)) { |
| return; |
| } |
| final int offset = mTextView.getOffsetForPosition(mContextMenuAnchorX, mContextMenuAnchorY); |
| if (offset == -1) { |
| return; |
| } |
| stopTextActionModeWithPreservingSelection(); |
| final boolean isOnSelection = mTextView.hasSelection() |
| && offset >= mTextView.getSelectionStart() && offset <= mTextView.getSelectionEnd(); |
| if (!isOnSelection) { |
| // Right clicked position is not on the selection. Remove the selection and move the |
| // cursor to the right clicked position. |
| Selection.setSelection((Spannable) mTextView.getText(), offset); |
| stopTextActionMode(); |
| } |
| |
| if (shouldOfferToShowSuggestions()) { |
| final SuggestionInfo[] suggestionInfoArray = |
| new SuggestionInfo[SuggestionSpan.SUGGESTIONS_MAX_SIZE]; |
| for (int i = 0; i < suggestionInfoArray.length; i++) { |
| suggestionInfoArray[i] = new SuggestionInfo(); |
| } |
| final SubMenu subMenu = menu.addSubMenu(Menu.NONE, Menu.NONE, MENU_ITEM_ORDER_REPLACE, |
| com.android.internal.R.string.replace); |
| final int numItems = mSuggestionHelper.getSuggestionInfo(suggestionInfoArray, null); |
| for (int i = 0; i < numItems; i++) { |
| final SuggestionInfo info = suggestionInfoArray[i]; |
| subMenu.add(Menu.NONE, Menu.NONE, i, info.mText) |
| .setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() { |
| @Override |
| public boolean onMenuItemClick(MenuItem item) { |
| replaceWithSuggestion(info); |
| return true; |
| } |
| }); |
| } |
| } |
| |
| menu.add(Menu.NONE, TextView.ID_UNDO, MENU_ITEM_ORDER_UNDO, |
| com.android.internal.R.string.undo) |
| .setAlphabeticShortcut('z') |
| .setOnMenuItemClickListener(mOnContextMenuItemClickListener) |
| .setEnabled(mTextView.canUndo()); |
| menu.add(Menu.NONE, TextView.ID_REDO, MENU_ITEM_ORDER_REDO, |
| com.android.internal.R.string.redo) |
| .setOnMenuItemClickListener(mOnContextMenuItemClickListener) |
| .setEnabled(mTextView.canRedo()); |
| |
| menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, |
| com.android.internal.R.string.cut) |
| .setAlphabeticShortcut('x') |
| .setOnMenuItemClickListener(mOnContextMenuItemClickListener) |
| .setEnabled(mTextView.canCut()); |
| menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, |
| com.android.internal.R.string.copy) |
| .setAlphabeticShortcut('c') |
| .setOnMenuItemClickListener(mOnContextMenuItemClickListener) |
| .setEnabled(mTextView.canCopy()); |
| menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, |
| com.android.internal.R.string.paste) |
| .setAlphabeticShortcut('v') |
| .setEnabled(mTextView.canPaste()) |
| .setOnMenuItemClickListener(mOnContextMenuItemClickListener); |
| menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE_AS_PLAIN_TEXT, |
| com.android.internal.R.string.paste_as_plain_text) |
| .setEnabled(mTextView.canPaste()) |
| .setOnMenuItemClickListener(mOnContextMenuItemClickListener); |
| menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, |
| com.android.internal.R.string.share) |
| .setEnabled(mTextView.canShare()) |
| .setOnMenuItemClickListener(mOnContextMenuItemClickListener); |
| menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, |
| com.android.internal.R.string.selectAll) |
| .setAlphabeticShortcut('a') |
| .setEnabled(mTextView.canSelectAllText()) |
| .setOnMenuItemClickListener(mOnContextMenuItemClickListener); |
| |
| mPreserveSelection = true; |
| } |
| |
| @Nullable |
| private SuggestionSpan findEquivalentSuggestionSpan( |
| @NonNull SuggestionSpanInfo suggestionSpanInfo) { |
| final Editable editable = (Editable) mTextView.getText(); |
| if (editable.getSpanStart(suggestionSpanInfo.mSuggestionSpan) >= 0) { |
| // Exactly same span is found. |
| return suggestionSpanInfo.mSuggestionSpan; |
| } |
| // Suggestion span couldn't be found. Try to find a suggestion span that has the same |
| // contents. |
| final SuggestionSpan[] suggestionSpans = editable.getSpans(suggestionSpanInfo.mSpanStart, |
| suggestionSpanInfo.mSpanEnd, SuggestionSpan.class); |
| for (final SuggestionSpan suggestionSpan : suggestionSpans) { |
| final int start = editable.getSpanStart(suggestionSpan); |
| if (start != suggestionSpanInfo.mSpanStart) { |
| continue; |
| } |
| final int end = editable.getSpanEnd(suggestionSpan); |
| if (end != suggestionSpanInfo.mSpanEnd) { |
| continue; |
| } |
| if (suggestionSpan.equals(suggestionSpanInfo.mSuggestionSpan)) { |
| return suggestionSpan; |
| } |
| } |
| return null; |
| } |
| |
| private void replaceWithSuggestion(@NonNull final SuggestionInfo suggestionInfo) { |
| final SuggestionSpan targetSuggestionSpan = findEquivalentSuggestionSpan( |
| suggestionInfo.mSuggestionSpanInfo); |
| if (targetSuggestionSpan == null) { |
| // Span has been removed |
| return; |
| } |
| final Editable editable = (Editable) mTextView.getText(); |
| final int spanStart = editable.getSpanStart(targetSuggestionSpan); |
| final int spanEnd = editable.getSpanEnd(targetSuggestionSpan); |
| if (spanStart < 0 || spanEnd <= spanStart) { |
| // Span has been removed |
| return; |
| } |
| |
| final String originalText = TextUtils.substring(editable, spanStart, spanEnd); |
| // SuggestionSpans are removed by replace: save them before |
| SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd, |
| SuggestionSpan.class); |
| final int length = suggestionSpans.length; |
| int[] suggestionSpansStarts = new int[length]; |
| int[] suggestionSpansEnds = new int[length]; |
| int[] suggestionSpansFlags = new int[length]; |
| for (int i = 0; i < length; i++) { |
| final SuggestionSpan suggestionSpan = suggestionSpans[i]; |
| suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan); |
| suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan); |
| suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan); |
| |
| // Remove potential misspelled flags |
| int suggestionSpanFlags = suggestionSpan.getFlags(); |
| if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) != 0) { |
| suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED; |
| suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT; |
| suggestionSpan.setFlags(suggestionSpanFlags); |
| } |
| } |
| |
| // Notify source IME of the suggestion pick. Do this before swapping texts. |
| targetSuggestionSpan.notifySelection( |
| mTextView.getContext(), originalText, suggestionInfo.mSuggestionIndex); |
| |
| // Swap text content between actual text and Suggestion span |
| final int suggestionStart = suggestionInfo.mSuggestionStart; |
| final int suggestionEnd = suggestionInfo.mSuggestionEnd; |
| final String suggestion = suggestionInfo.mText.subSequence( |
| suggestionStart, suggestionEnd).toString(); |
| mTextView.replaceText_internal(spanStart, spanEnd, suggestion); |
| |
| String[] suggestions = targetSuggestionSpan.getSuggestions(); |
| suggestions[suggestionInfo.mSuggestionIndex] = originalText; |
| |
| // Restore previous SuggestionSpans |
| final int lengthDelta = suggestion.length() - (spanEnd - spanStart); |
| for (int i = 0; i < length; i++) { |
| // Only spans that include the modified region make sense after replacement |
| // Spans partially included in the replaced region are removed, there is no |
| // way to assign them a valid range after replacement |
| if (suggestionSpansStarts[i] <= spanStart && suggestionSpansEnds[i] >= spanEnd) { |
| mTextView.setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i], |
| suggestionSpansEnds[i] + lengthDelta, suggestionSpansFlags[i]); |
| } |
| } |
| // Move cursor at the end of the replaced word |
| final int newCursorPosition = spanEnd + lengthDelta; |
| mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); |
| } |
| |
| private final MenuItem.OnMenuItemClickListener mOnContextMenuItemClickListener = |
| new MenuItem.OnMenuItemClickListener() { |
| @Override |
| public boolean onMenuItemClick(MenuItem item) { |
| if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { |
| return true; |
| } |
| return mTextView.onTextContextMenuItem(item.getItemId()); |
| } |
| }; |
| |
| /** |
| * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related |
| * pop-up should be displayed. |
| * Also monitors {@link Selection} to call back to the attached input method. |
| */ |
| class SpanController implements SpanWatcher { |
| |
| private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs |
| |
| private EasyEditPopupWindow mPopupWindow; |
| |
| private Runnable mHidePopup; |
| |
| // This function is pure but inner classes can't have static functions |
| private boolean isNonIntermediateSelectionSpan(final Spannable text, |
| final Object span) { |
| return (Selection.SELECTION_START == span || Selection.SELECTION_END == span) |
| && (text.getSpanFlags(span) & Spanned.SPAN_INTERMEDIATE) == 0; |
| } |
| |
| @Override |
| public void onSpanAdded(Spannable text, Object span, int start, int end) { |
| if (isNonIntermediateSelectionSpan(text, span)) { |
| sendUpdateSelection(); |
| } else if (span instanceof EasyEditSpan) { |
| if (mPopupWindow == null) { |
| mPopupWindow = new EasyEditPopupWindow(); |
| mHidePopup = new Runnable() { |
| @Override |
| public void run() { |
| hide(); |
| } |
| }; |
| } |
| |
| // Make sure there is only at most one EasyEditSpan in the text |
| if (mPopupWindow.mEasyEditSpan != null) { |
| mPopupWindow.mEasyEditSpan.setDeleteEnabled(false); |
| } |
| |
| mPopupWindow.setEasyEditSpan((EasyEditSpan) span); |
| mPopupWindow.setOnDeleteListener(new EasyEditDeleteListener() { |
| @Override |
| public void onDeleteClick(EasyEditSpan span) { |
| Editable editable = (Editable) mTextView.getText(); |
| int start = editable.getSpanStart(span); |
| int end = editable.getSpanEnd(span); |
| if (start >= 0 && end >= 0) { |
| sendEasySpanNotification(EasyEditSpan.TEXT_DELETED, span); |
| mTextView.deleteText_internal(start, end); |
| } |
| editable.removeSpan(span); |
| } |
| }); |
| |
| if (mTextView.getWindowVisibility() != View.VISIBLE) { |
| // The window is not visible yet, ignore the text change. |
| return; |
| } |
| |
| if (mTextView.getLayout() == null) { |
| // The view has not been laid out yet, ignore the text change |
| return; |
| } |
| |
| if (extractedTextModeWillBeStarted()) { |
| // The input is in extract mode. Do not handle the easy edit in |
| // the original TextView, as the ExtractEditText will do |
| return; |
| } |
| |
| mPopupWindow.show(); |
| mTextView.removeCallbacks(mHidePopup); |
| mTextView.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS); |
| } |
| } |
| |
| @Override |
| public void onSpanRemoved(Spannable text, Object span, int start, int end) { |
| if (isNonIntermediateSelectionSpan(text, span)) { |
| sendUpdateSelection(); |
| } else if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { |
| hide(); |
| } |
| } |
| |
| @Override |
| public void onSpanChanged(Spannable text, Object span, int previousStart, int previousEnd, |
| int newStart, int newEnd) { |
| if (isNonIntermediateSelectionSpan(text, span)) { |
| sendUpdateSelection(); |
| } else if (mPopupWindow != null && span instanceof EasyEditSpan) { |
| EasyEditSpan easyEditSpan = (EasyEditSpan) span; |
| sendEasySpanNotification(EasyEditSpan.TEXT_MODIFIED, easyEditSpan); |
| text.removeSpan(easyEditSpan); |
| } |
| } |
| |
| public void hide() { |
| if (mPopupWindow != null) { |
| mPopupWindow.hide(); |
| mTextView.removeCallbacks(mHidePopup); |
| } |
| } |
| |
| private void sendEasySpanNotification(int textChangedType, EasyEditSpan span) { |
| try { |
| PendingIntent pendingIntent = span.getPendingIntent(); |
| if (pendingIntent != null) { |
| Intent intent = new Intent(); |
| intent.putExtra(EasyEditSpan.EXTRA_TEXT_CHANGED_TYPE, textChangedType); |
| pendingIntent.send(mTextView.getContext(), 0, intent); |
| } |
| } catch (CanceledException e) { |
| // This should not happen, as we should try to send the intent only once. |
| Log.w(TAG, "PendingIntent for notification cannot be sent", e); |
| } |
| } |
| } |
| |
| /** |
| * Listens for the delete event triggered by {@link EasyEditPopupWindow}. |
| */ |
| private interface EasyEditDeleteListener { |
| |
| /** |
| * Clicks the delete pop-up. |
| */ |
| void onDeleteClick(EasyEditSpan span); |
| } |
| |
| /** |
| * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled |
| * by {@link SpanController}. |
| */ |
| private class EasyEditPopupWindow extends PinnedPopupWindow |
| implements OnClickListener { |
| private static final int POPUP_TEXT_LAYOUT = |
| com.android.internal.R.layout.text_edit_action_popup_text; |
| private TextView mDeleteTextView; |
| private EasyEditSpan mEasyEditSpan; |
| private EasyEditDeleteListener mOnDeleteListener; |
| |
| @Override |
| protected void createPopupWindow() { |
| mPopupWindow = new PopupWindow(mTextView.getContext(), null, |
| com.android.internal.R.attr.textSelectHandleWindowStyle); |
| mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); |
| mPopupWindow.setClippingEnabled(true); |
| } |
| |
| @Override |
| protected void initContentView() { |
| LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); |
| linearLayout.setOrientation(LinearLayout.HORIZONTAL); |
| mContentView = linearLayout; |
| mContentView.setBackgroundResource( |
| com.android.internal.R.drawable.text_edit_side_paste_window); |
| |
| LayoutInflater inflater = (LayoutInflater)mTextView.getContext(). |
| getSystemService(Context.LAYOUT_INFLATER_SERVICE); |
| |
| LayoutParams wrapContent = new LayoutParams( |
| ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); |
| |
| mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); |
| mDeleteTextView.setLayoutParams(wrapContent); |
| mDeleteTextView.setText(com.android.internal.R.string.delete); |
| mDeleteTextView.setOnClickListener(this); |
| mContentView.addView(mDeleteTextView); |
| } |
| |
| public void setEasyEditSpan(EasyEditSpan easyEditSpan) { |
| mEasyEditSpan = easyEditSpan; |
| } |
| |
| private void setOnDeleteListener(EasyEditDeleteListener listener) { |
| mOnDeleteListener = listener; |
| } |
| |
| @Override |
| public void onClick(View view) { |
| if (view == mDeleteTextView |
| && mEasyEditSpan != null && mEasyEditSpan.isDeleteEnabled() |
| && mOnDeleteListener != null) { |
| mOnDeleteListener.onDeleteClick(mEasyEditSpan); |
| } |
| } |
| |
| @Override |
| public void hide() { |
| if (mEasyEditSpan != null) { |
| mEasyEditSpan.setDeleteEnabled(false); |
| } |
| mOnDeleteListener = null; |
| super.hide(); |
| } |
| |
| @Override |
| protected int getTextOffset() { |
| // Place the pop-up at the end of the span |
| Editable editable = (Editable) mTextView.getText(); |
| return editable.getSpanEnd(mEasyEditSpan); |
| } |
| |
| @Override |
| protected int getVerticalLocalPosition(int line) { |
| return mTextView.getLayout().getLineBottom(line); |
| } |
| |
| @Override |
| protected int clipVertically(int positionY) { |
| // As we display the pop-up below the span, no vertical clipping is required. |
| return positionY; |
| } |
| } |
| |
| private class PositionListener implements ViewTreeObserver.OnPreDrawListener { |
| // 3 handles |
| // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others) |
| // 1 CursorAnchorInfoNotifier |
| private final int MAXIMUM_NUMBER_OF_LISTENERS = 7; |
| private TextViewPositionListener[] mPositionListeners = |
| new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS]; |
| private boolean mCanMove[] = new boolean[MAXIMUM_NUMBER_OF_LISTENERS]; |
| private boolean mPositionHasChanged = true; |
| // Absolute position of the TextView with respect to its parent window |
| private int mPositionX, mPositionY; |
| private int mNumberOfListeners; |
| private boolean mScrollHasChanged; |
| final int[] mTempCoords = new int[2]; |
| |
| public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) { |
| if (mNumberOfListeners == 0) { |
| updatePosition(); |
| ViewTreeObserver vto = mTextView.getViewTreeObserver(); |
| vto.addOnPreDrawListener(this); |
| } |
| |
| int emptySlotIndex = -1; |
| for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { |
| TextViewPositionListener listener = mPositionListeners[i]; |
| if (listener == positionListener) { |
| return; |
| } else if (emptySlotIndex < 0 && listener == null) { |
| emptySlotIndex = i; |
| } |
| } |
| |
| mPositionListeners[emptySlotIndex] = positionListener; |
| mCanMove[emptySlotIndex] = canMove; |
| mNumberOfListeners++; |
| } |
| |
| public void removeSubscriber(TextViewPositionListener positionListener) { |
| for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { |
| if (mPositionListeners[i] == positionListener) { |
| mPositionListeners[i] = null; |
| mNumberOfListeners--; |
| break; |
| } |
| } |
| |
| if (mNumberOfListeners == 0) { |
| ViewTreeObserver vto = mTextView.getViewTreeObserver(); |
| vto.removeOnPreDrawListener(this); |
| } |
| } |
| |
| public int getPositionX() { |
| return mPositionX; |
| } |
| |
| public int getPositionY() { |
| return mPositionY; |
| } |
| |
| @Override |
| public boolean onPreDraw() { |
| updatePosition(); |
| |
| for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { |
| if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) { |
| TextViewPositionListener positionListener = mPositionListeners[i]; |
| if (positionListener != null) { |
| positionListener.updatePosition(mPositionX, mPositionY, |
| mPositionHasChanged, mScrollHasChanged); |
| } |
| } |
| } |
| |
| mScrollHasChanged = false; |
| return true; |
| } |
| |
| private void updatePosition() { |
| mTextView.getLocationInWindow(mTempCoords); |
| |
| mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY; |
| |
| mPositionX = mTempCoords[0]; |
| mPositionY = mTempCoords[1]; |
| } |
| |
| public void onScrollChanged() { |
| mScrollHasChanged = true; |
| } |
| } |
| |
| private abstract class PinnedPopupWindow implements TextViewPositionListener { |
| protected PopupWindow mPopupWindow; |
| protected ViewGroup mContentView; |
| int mPositionX, mPositionY; |
| int mClippingLimitLeft, mClippingLimitRight; |
| |
| protected abstract void createPopupWindow(); |
| protected abstract void initContentView(); |
| protected abstract int getTextOffset(); |
| protected abstract int getVerticalLocalPosition(int line); |
| protected abstract int clipVertically(int positionY); |
| |
| public PinnedPopupWindow() { |
| createPopupWindow(); |
| |
| mPopupWindow.setWindowLayoutType( |
| WindowManager.LayoutParams.TYPE_APPLICATION_ABOVE_SUB_PANEL); |
| mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); |
| mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); |
| |
| initContentView(); |
| |
| LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, |
| ViewGroup.LayoutParams.WRAP_CONTENT); |
| mContentView.setLayoutParams(wrapContent); |
| |
| mPopupWindow.setContentView(mContentView); |
| } |
| |
| public void show() { |
| getPositionListener().addSubscriber(this, false /* offset is fixed */); |
| |
| computeLocalPosition(); |
| |
| final PositionListener positionListener = getPositionListener(); |
| updatePosition(positionListener.getPositionX(), positionListener.getPositionY()); |
| } |
| |
| protected void measureContent() { |
| final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); |
| mContentView.measure( |
| View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, |
| View.MeasureSpec.AT_MOST), |
| View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, |
| View.MeasureSpec.AT_MOST)); |
| } |
| |
| /* The popup window will be horizontally centered on the getTextOffset() and vertically |
| * positioned according to viewportToContentHorizontalOffset. |
| * |
| * This method assumes that mContentView has properly been measured from its content. */ |
| private void computeLocalPosition() { |
| measureContent(); |
| final int width = mContentView.getMeasuredWidth(); |
| final int offset = getTextOffset(); |
| mPositionX = (int) (mTextView.getLayout().getPrimaryHorizontal(offset) - width / 2.0f); |
| mPositionX += mTextView.viewportToContentHorizontalOffset(); |
| |
| final int line = mTextView.getLayout().getLineForOffset(offset); |
| mPositionY = getVerticalLocalPosition(line); |
| mPositionY += mTextView.viewportToContentVerticalOffset(); |
| } |
| |
| private void updatePosition(int parentPositionX, int parentPositionY) { |
| int positionX = parentPositionX + mPositionX; |
| int positionY = parentPositionY + mPositionY; |
| |
| positionY = clipVertically(positionY); |
| |
| // Horizontal clipping |
| final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); |
| final int width = mContentView.getMeasuredWidth(); |
| positionX = Math.min( |
| displayMetrics.widthPixels - width + mClippingLimitRight, positionX); |
| positionX = Math.max(-mClippingLimitLeft, positionX); |
| |
| if (isShowing()) { |
| mPopupWindow.update(positionX, positionY, -1, -1); |
| } else { |
| mPopupWindow.showAtLocation(mTextView, Gravity.NO_GRAVITY, |
| positionX, positionY); |
| } |
| } |
| |
| public void hide() { |
| if (!isShowing()) { |
| return; |
| } |
| mPopupWindow.dismiss(); |
| getPositionListener().removeSubscriber(this); |
| } |
| |
| @Override |
| public void updatePosition(int parentPositionX, int parentPositionY, |
| boolean parentPositionChanged, boolean parentScrolled) { |
| // Either parentPositionChanged or parentScrolled is true, check if still visible |
| if (isShowing() && isOffsetVisible(getTextOffset())) { |
| if (parentScrolled) computeLocalPosition(); |
| updatePosition(parentPositionX, parentPositionY); |
| } else { |
| hide(); |
| } |
| } |
| |
| public boolean isShowing() { |
| return mPopupWindow.isShowing(); |
| } |
| } |
| |
| private static final class SuggestionInfo { |
| // Range of actual suggestion within mText |
| int mSuggestionStart, mSuggestionEnd; |
| |
| // The SuggestionSpan that this TextView represents |
| final SuggestionSpanInfo mSuggestionSpanInfo = new SuggestionSpanInfo(); |
| |
| // The index of this suggestion inside suggestionSpan |
| int mSuggestionIndex; |
| |
| final SpannableStringBuilder mText = new SpannableStringBuilder(); |
| |
| void clear() { |
| mSuggestionSpanInfo.clear(); |
| mText.clear(); |
| } |
| |
| // Utility method to set attributes about a SuggestionSpan. |
| void setSpanInfo(SuggestionSpan span, int spanStart, int spanEnd) { |
| mSuggestionSpanInfo.mSuggestionSpan = span; |
| mSuggestionSpanInfo.mSpanStart = spanStart; |
| mSuggestionSpanInfo.mSpanEnd = spanEnd; |
| } |
| } |
| |
| private static final class SuggestionSpanInfo { |
| // The SuggestionSpan; |
| @Nullable |
| SuggestionSpan mSuggestionSpan; |
| |
| // The SuggestionSpan start position |
| int mSpanStart; |
| |
| // The SuggestionSpan end position |
| int mSpanEnd; |
| |
| void clear() { |
| mSuggestionSpan = null; |
| } |
| } |
| |
| private class SuggestionHelper { |
| private final Comparator<SuggestionSpan> mSuggestionSpanComparator = |
| new SuggestionSpanComparator(); |
| private final HashMap<SuggestionSpan, Integer> mSpansLengths = |
| new HashMap<SuggestionSpan, Integer>(); |
| |
| private class SuggestionSpanComparator implements Comparator<SuggestionSpan> { |
| public int compare(SuggestionSpan span1, SuggestionSpan span2) { |
| final int flag1 = span1.getFlags(); |
| final int flag2 = span2.getFlags(); |
| if (flag1 != flag2) { |
| // The order here should match what is used in updateDrawState |
| final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; |
| final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; |
| final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0; |
| final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0; |
| if (easy1 && !misspelled1) return -1; |
| if (easy2 && !misspelled2) return 1; |
| if (misspelled1) return -1; |
| if (misspelled2) return 1; |
| } |
| |
| return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue(); |
| } |
| } |
| |
| /** |
| * Returns the suggestion spans that cover the current cursor position. The suggestion |
| * spans are sorted according to the length of text that they are attached to. |
| */ |
| private SuggestionSpan[] getSortedSuggestionSpans() { |
| int pos = mTextView.getSelectionStart(); |
| Spannable spannable = (Spannable) mTextView.getText(); |
| SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class); |
| |
| mSpansLengths.clear(); |
| for (SuggestionSpan suggestionSpan : suggestionSpans) { |
| int start = spannable.getSpanStart(suggestionSpan); |
| int end = spannable.getSpanEnd(suggestionSpan); |
| mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start)); |
| } |
| |
| // The suggestions are sorted according to their types (easy correction first, then |
| // misspelled) and to the length of the text that they cover (shorter first). |
| Arrays.sort(suggestionSpans, mSuggestionSpanComparator); |
| mSpansLengths.clear(); |
| |
| return suggestionSpans; |
| } |
| |
| /** |
| * Gets the SuggestionInfo list that contains suggestion information at the current cursor |
| * position. |
| * |
| * @param suggestionInfos SuggestionInfo array the results will be set. |
| * @param misspelledSpanInfo a struct the misspelled SuggestionSpan info will be set. |
| * @return the number of suggestions actually fetched. |
| */ |
| public int getSuggestionInfo(SuggestionInfo[] suggestionInfos, |
| @Nullable SuggestionSpanInfo misspelledSpanInfo) { |
| final Spannable spannable = (Spannable) mTextView.getText(); |
| final SuggestionSpan[] suggestionSpans = getSortedSuggestionSpans(); |
| final int nbSpans = suggestionSpans.length; |
| if (nbSpans == 0) return 0; |
| |
| int numberOfSuggestions = 0; |
| for (final SuggestionSpan suggestionSpan : suggestionSpans) { |
| final int spanStart = spannable.getSpanStart(suggestionSpan); |
| final int spanEnd = spannable.getSpanEnd(suggestionSpan); |
| |
| if (misspelledSpanInfo != null |
| && (suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) { |
| misspelledSpanInfo.mSuggestionSpan = suggestionSpan; |
| misspelledSpanInfo.mSpanStart = spanStart; |
| misspelledSpanInfo.mSpanEnd = spanEnd; |
| } |
| |
| final String[] suggestions = suggestionSpan.getSuggestions(); |
| final int nbSuggestions = suggestions.length; |
| suggestionLoop: |
| for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) { |
| final String suggestion = suggestions[suggestionIndex]; |
| for (int i = 0; i < numberOfSuggestions; i++) { |
| final SuggestionInfo otherSuggestionInfo = suggestionInfos[i]; |
| if (otherSuggestionInfo.mText.toString().equals(suggestion)) { |
| final int otherSpanStart = |
| otherSuggestionInfo.mSuggestionSpanInfo.mSpanStart; |
| final int otherSpanEnd = |
| otherSuggestionInfo.mSuggestionSpanInfo.mSpanEnd; |
| if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) { |
| continue suggestionLoop; |
| } |
| } |
| } |
| |
| SuggestionInfo suggestionInfo = suggestionInfos[numberOfSuggestions]; |
| suggestionInfo.setSpanInfo(suggestionSpan, spanStart, spanEnd); |
| suggestionInfo.mSuggestionIndex = suggestionIndex; |
| suggestionInfo.mSuggestionStart = 0; |
| suggestionInfo.mSuggestionEnd = suggestion.length(); |
| suggestionInfo.mText.replace(0, suggestionInfo.mText.length(), suggestion); |
| numberOfSuggestions++; |
| if (numberOfSuggestions >= suggestionInfos.length) { |
| return numberOfSuggestions; |
| } |
| } |
| } |
| return numberOfSuggestions; |
| } |
| } |
| |
| @VisibleForTesting |
| public class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener { |
| private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE; |
| |
| // Key of intent extras for inserting new word into user dictionary. |
| private static final String USER_DICTIONARY_EXTRA_WORD = "word"; |
| private static final String USER_DICTIONARY_EXTRA_LOCALE = "locale"; |
| |
| private SuggestionInfo[] mSuggestionInfos; |
| private int mNumberOfSuggestions; |
| private boolean mCursorWasVisibleBeforeSuggestions; |
| private boolean mIsShowingUp = false; |
| private SuggestionAdapter mSuggestionsAdapter; |
| private final TextAppearanceSpan mHighlightSpan = new TextAppearanceSpan( |
| mTextView.getContext(), mTextView.mTextEditSuggestionHighlightStyle); |
| private TextView mAddToDictionaryButton; |
| private TextView mDeleteButton; |
| private ListView mSuggestionListView; |
| private final SuggestionSpanInfo mMisspelledSpanInfo = new SuggestionSpanInfo(); |
| private int mContainerMarginWidth; |
| private int mContainerMarginTop; |
| private LinearLayout mContainerView; |
| |
| private class CustomPopupWindow extends PopupWindow { |
| @Override |
| public void dismiss() { |
| if (!isShowing()) { |
| return; |
| } |
| super.dismiss(); |
| getPositionListener().removeSubscriber(SuggestionsPopupWindow.this); |
| |
| // Safe cast since show() checks that mTextView.getText() is an Editable |
| ((Spannable) mTextView.getText()).removeSpan(mSuggestionRangeSpan); |
| |
| mTextView.setCursorVisible(mCursorWasVisibleBeforeSuggestions); |
| if (hasInsertionController() && !extractedTextModeWillBeStarted()) { |
| getInsertionController().show(); |
| } |
| } |
| } |
| |
| public SuggestionsPopupWindow() { |
| mCursorWasVisibleBeforeSuggestions = mCursorVisible; |
| } |
| |
| @Override |
| protected void createPopupWindow() { |
| mPopupWindow = new CustomPopupWindow(); |
| mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); |
| mPopupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT)); |
| mPopupWindow.setFocusable(true); |
| mPopupWindow.setClippingEnabled(false); |
| } |
| |
| @Override |
| protected void initContentView() { |
| final LayoutInflater inflater = (LayoutInflater) mTextView.getContext(). |
| getSystemService(Context.LAYOUT_INFLATER_SERVICE); |
| mContentView = (ViewGroup) inflater.inflate( |
| mTextView.mTextEditSuggestionContainerLayout, null); |
| |
| mContainerView = (LinearLayout) mContentView.findViewById( |
| com.android.internal.R.id.suggestionWindowContainer); |
| ViewGroup.MarginLayoutParams lp = |
| (ViewGroup.MarginLayoutParams) mContainerView.getLayoutParams(); |
| mContainerMarginWidth = lp.leftMargin + lp.rightMargin; |
| mContainerMarginTop = lp.topMargin; |
| mClippingLimitLeft = lp.leftMargin; |
| mClippingLimitRight = lp.rightMargin; |
| |
| mSuggestionListView = (ListView) mContentView.findViewById( |
| com.android.internal.R.id.suggestionContainer); |
| |
| mSuggestionsAdapter = new SuggestionAdapter(); |
| mSuggestionListView.setAdapter(mSuggestionsAdapter); |
| mSuggestionListView.setOnItemClickListener(this); |
| |
| // Inflate the suggestion items once and for all. |
| mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS]; |
| for (int i = 0; i < mSuggestionInfos.length; i++) { |
| mSuggestionInfos[i] = new SuggestionInfo(); |
| } |
| |
| mAddToDictionaryButton = (TextView) mContentView.findViewById( |
| com.android.internal.R.id.addToDictionaryButton); |
| mAddToDictionaryButton.setOnClickListener(new View.OnClickListener() { |
| public void onClick(View v) { |
| final SuggestionSpan misspelledSpan = |
| findEquivalentSuggestionSpan(mMisspelledSpanInfo); |
| if (misspelledSpan == null) { |
| // Span has been removed. |
| return; |
| } |
| final Editable editable = (Editable) mTextView.getText(); |
| final int spanStart = editable.getSpanStart(misspelledSpan); |
| final int spanEnd = editable.getSpanEnd(misspelledSpan); |
| if (spanStart < 0 || spanEnd <= spanStart) { |
| return; |
| } |
| final String originalText = TextUtils.substring(editable, spanStart, spanEnd); |
| |
| final Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT); |
| intent.putExtra(USER_DICTIONARY_EXTRA_WORD, originalText); |
| intent.putExtra(USER_DICTIONARY_EXTRA_LOCALE, |
| mTextView.getTextServicesLocale().toString()); |
| intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); |
| mTextView.getContext().startActivity(intent); |
| // There is no way to know if the word was indeed added. Re-check. |
| // TODO The ExtractEditText should remove the span in the original text instead |
| editable.removeSpan(mMisspelledSpanInfo.mSuggestionSpan); |
| Selection.setSelection(editable, spanEnd); |
| updateSpellCheckSpans(spanStart, spanEnd, false); |
| hideWithCleanUp(); |
| } |
| }); |
| |
| mDeleteButton = (TextView) mContentView.findViewById( |
| com.android.internal.R.id.deleteButton); |
| mDeleteButton.setOnClickListener(new View.OnClickListener() { |
| public void onClick(View v) { |
| final Editable editable = (Editable) mTextView.getText(); |
| |
| final int spanUnionStart = editable.getSpanStart(mSuggestionRangeSpan); |
| int spanUnionEnd = editable.getSpanEnd(mSuggestionRangeSpan); |
| if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) { |
| // Do not leave two adjacent spaces after deletion, or one at beginning of |
| // text |
| if (spanUnionEnd < editable.length() && |
| Character.isSpaceChar(editable.charAt(spanUnionEnd)) && |
| (spanUnionStart == 0 || |
| Character.isSpaceChar(editable.charAt(spanUnionStart - 1)))) { |
| spanUnionEnd = spanUnionEnd + 1; |
| } |
| mTextView.deleteText_internal(spanUnionStart, spanUnionEnd); |
| } |
| hideWithCleanUp(); |
| } |
| }); |
| |
| } |
| |
| public boolean isShowingUp() { |
| return mIsShowingUp; |
| } |
| |
| public void onParentLostFocus() { |
| mIsShowingUp = false; |
| } |
| |
| private class SuggestionAdapter extends BaseAdapter { |
| private LayoutInflater mInflater = (LayoutInflater) mTextView.getContext(). |
| getSystemService(Context.LAYOUT_INFLATER_SERVICE); |
| |
| @Override |
| public int getCount() { |
| return mNumberOfSuggestions; |
| } |
| |
| @Override |
| public Object getItem(int position) { |
| return mSuggestionInfos[position]; |
| } |
| |
| @Override |
| public long getItemId(int position) { |
| return position; |
| } |
| |
| @Override |
| public View getView(int position, View convertView, ViewGroup parent) { |
| TextView textView = (TextView) convertView; |
| |
| if (textView == null) { |
| textView = (TextView) mInflater.inflate(mTextView.mTextEditSuggestionItemLayout, |
| parent, false); |
| } |
| |
| final SuggestionInfo suggestionInfo = mSuggestionInfos[position]; |
| textView.setText(suggestionInfo.mText); |
| return textView; |
| } |
| } |
| |
| @VisibleForTesting |
| public ViewGroup getContentViewForTesting() { |
| return mContentView; |
| } |
| |
| @Override |
| public void show() { |
| if (!(mTextView.getText() instanceof Editable)) return; |
| if (extractedTextModeWillBeStarted()) { |
| return; |
| } |
| |
| if (updateSuggestions()) { |
| mCursorWasVisibleBeforeSuggestions = mCursorVisible; |
| mTextView.setCursorVisible(false); |
| mIsShowingUp = true; |
| super.show(); |
| } |
| } |
| |
| @Override |
| protected void measureContent() { |
| final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); |
| final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec( |
| displayMetrics.widthPixels, View.MeasureSpec.AT_MOST); |
| final int verticalMeasure = View.MeasureSpec.makeMeasureSpec( |
| displayMetrics.heightPixels, View.MeasureSpec.AT_MOST); |
| |
| int width = 0; |
| View view = null; |
| for (int i = 0; i < mNumberOfSuggestions; i++) { |
| view = mSuggestionsAdapter.getView(i, view, mContentView); |
| view.getLayoutParams().width = LayoutParams.WRAP_CONTENT; |
| view.measure(horizontalMeasure, verticalMeasure); |
| width = Math.max(width, view.getMeasuredWidth()); |
| } |
| |
| if (mAddToDictionaryButton.getVisibility() != View.GONE) { |
| mAddToDictionaryButton.measure(horizontalMeasure, verticalMeasure); |
| width = Math.max(width, mAddToDictionaryButton.getMeasuredWidth()); |
| } |
| |
| mDeleteButton.measure(horizontalMeasure, verticalMeasure); |
| width = Math.max(width, mDeleteButton.getMeasuredWidth()); |
| |
| width += mContainerView.getPaddingLeft() + mContainerView.getPaddingRight() |
| + mContainerMarginWidth; |
| |
| // Enforce the width based on actual text widths |
| mContentView.measure( |
| View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY), |
| verticalMeasure); |
| |
| Drawable popupBackground = mPopupWindow.getBackground(); |
| if (popupBackground != null) { |
| if (mTempRect == null) mTempRect = new Rect(); |
| popupBackground.getPadding(mTempRect); |
| width += mTempRect.left + mTempRect.right; |
| } |
| mPopupWindow.setWidth(width); |
| } |
| |
| @Override |
| protected int getTextOffset() { |
| return (mTextView.getSelectionStart() + mTextView.getSelectionStart()) / 2; |
| } |
| |
| @Override |
| protected int getVerticalLocalPosition(int line) { |
| return mTextView.getLayout().getLineBottom(line) - mContainerMarginTop; |
| } |
| |
| @Override |
| protected int clipVertically(int positionY) { |
| final int height = mContentView.getMeasuredHeight(); |
| final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); |
| return Math.min(positionY, displayMetrics.heightPixels - height); |
| } |
| |
| private void hideWithCleanUp() { |
| for (final SuggestionInfo info : mSuggestionInfos) { |
| info.clear(); |
| } |
| mMisspelledSpanInfo.clear(); |
| hide(); |
| } |
| |
| private boolean updateSuggestions() { |
| Spannable spannable = (Spannable) mTextView.getText(); |
| mNumberOfSuggestions = |
| mSuggestionHelper.getSuggestionInfo(mSuggestionInfos, mMisspelledSpanInfo); |
| if (mNumberOfSuggestions == 0 && mMisspelledSpanInfo.mSuggestionSpan == null) { |
| return false; |
| } |
| |
| int spanUnionStart = mTextView.getText().length(); |
| int spanUnionEnd = 0; |
| |
| for (int i = 0; i < mNumberOfSuggestions; i++) { |
| final SuggestionSpanInfo spanInfo = mSuggestionInfos[i].mSuggestionSpanInfo; |
| spanUnionStart = Math.min(spanUnionStart, spanInfo.mSpanStart); |
| spanUnionEnd = Math.max(spanUnionEnd, spanInfo.mSpanEnd); |
| } |
| if (mMisspelledSpanInfo.mSuggestionSpan != null) { |
| spanUnionStart = Math.min(spanUnionStart, mMisspelledSpanInfo.mSpanStart); |
| spanUnionEnd = Math.max(spanUnionEnd, mMisspelledSpanInfo.mSpanEnd); |
| } |
| |
| for (int i = 0; i < mNumberOfSuggestions; i++) { |
| highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd); |
| } |
| |
| // Make "Add to dictionary" item visible if there is a span with the misspelled flag |
| int addToDictionaryButtonVisibility = View.GONE; |
| if (mMisspelledSpanInfo.mSuggestionSpan != null) { |
| if (mMisspelledSpanInfo.mSpanStart >= 0 |
| && mMisspelledSpanInfo.mSpanEnd > mMisspelledSpanInfo.mSpanStart) { |
| addToDictionaryButtonVisibility = View.VISIBLE; |
| } |
| } |
| mAddToDictionaryButton.setVisibility(addToDictionaryButtonVisibility); |
| |
| if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan(); |
| final int underlineColor; |
| if (mNumberOfSuggestions != 0) { |
| underlineColor = |
| mSuggestionInfos[0].mSuggestionSpanInfo.mSuggestionSpan.getUnderlineColor(); |
| } else { |
| underlineColor = mMisspelledSpanInfo.mSuggestionSpan.getUnderlineColor(); |
| } |
| |
| if (underlineColor == 0) { |
| // Fallback on the default highlight color when the first span does not provide one |
| mSuggestionRangeSpan.setBackgroundColor(mTextView.mHighlightColor); |
| } else { |
| final float BACKGROUND_TRANSPARENCY = 0.4f; |
| final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY); |
| mSuggestionRangeSpan.setBackgroundColor( |
| (underlineColor & 0x00FFFFFF) + (newAlpha << 24)); |
| } |
| spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd, |
| Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); |
| |
| mSuggestionsAdapter.notifyDataSetChanged(); |
| return true; |
| } |
| |
| private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart, |
| int unionEnd) { |
| final Spannable text = (Spannable) mTextView.getText(); |
| final int spanStart = suggestionInfo.mSuggestionSpanInfo.mSpanStart; |
| final int spanEnd = suggestionInfo.mSuggestionSpanInfo.mSpanEnd; |
| |
| // Adjust the start/end of the suggestion span |
| suggestionInfo.mSuggestionStart = spanStart - unionStart; |
| suggestionInfo.mSuggestionEnd = suggestionInfo.mSuggestionStart |
| + suggestionInfo.mText.length(); |
| |
| suggestionInfo.mText.setSpan(mHighlightSpan, 0, suggestionInfo.mText.length(), |
| Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); |
| |
| // Add the text before and after the span. |
| final String textAsString = text.toString(); |
| suggestionInfo.mText.insert(0, textAsString.substring(unionStart, spanStart)); |
| suggestionInfo.mText.append(textAsString.substring(spanEnd, unionEnd)); |
| } |
| |
| @Override |
| public void onItemClick(AdapterView<?> parent, View view, int position, long id) { |
| SuggestionInfo suggestionInfo = mSuggestionInfos[position]; |
| replaceWithSuggestion(suggestionInfo); |
| hideWithCleanUp(); |
| } |
| } |
| |
| /** |
| * An ActionMode Callback class that is used to provide actions while in text insertion or |
| * selection mode. |
| * |
| * The default callback provides a subset of Select All, Cut, Copy, Paste, Share and Replace |
| * actions, depending on which of these this TextView supports and the current selection. |
| */ |
| private class TextActionModeCallback extends ActionMode.Callback2 { |
| private final Path mSelectionPath = new Path(); |
| private final RectF mSelectionBounds = new RectF(); |
| private final boolean mHasSelection; |
| |
| private int mHandleHeight; |
| |
| public TextActionModeCallback(boolean hasSelection) { |
| mHasSelection = hasSelection; |
| if (mHasSelection) { |
| SelectionModifierCursorController selectionController = getSelectionController(); |
| if (selectionController.mStartHandle == null) { |
| // As these are for initializing selectionController, hide() must be called. |
| selectionController.initDrawables(); |
| selectionController.initHandles(); |
| selectionController.hide(); |
| } |
| mHandleHeight = Math.max( |
| mSelectHandleLeft.getMinimumHeight(), |
| mSelectHandleRight.getMinimumHeight()); |
| } else { |
| InsertionPointCursorController insertionController = getInsertionController(); |
| if (insertionController != null) { |
| insertionController.getHandle(); |
| mHandleHeight = mSelectHandleCenter.getMinimumHeight(); |
| } |
| } |
| } |
| |
| @Override |
| public boolean onCreateActionMode(ActionMode mode, Menu menu) { |
| mode.setTitle(null); |
| mode.setSubtitle(null); |
| mode.setTitleOptionalHint(true); |
| populateMenuWithItems(menu); |
| |
| Callback customCallback = getCustomCallback(); |
| if (customCallback != null) { |
| if (!customCallback.onCreateActionMode(mode, menu)) { |
| // The custom mode can choose to cancel the action mode, dismiss selection. |
| Selection.setSelection((Spannable) mTextView.getText(), |
| mTextView.getSelectionEnd()); |
| return false; |
| } |
| } |
| |
| if (mTextView.canProcessText()) { |
| mProcessTextIntentActionsHandler.onInitializeMenu(menu); |
| } |
| |
| if (menu.hasVisibleItems() || mode.getCustomView() != null) { |
| if (mHasSelection && !mTextView.hasTransientState()) { |
| mTextView.setHasTransientState(true); |
| } |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| private Callback getCustomCallback() { |
| return mHasSelection |
| ? mCustomSelectionActionModeCallback |
| : mCustomInsertionActionModeCallback; |
| } |
| |
| private void populateMenuWithItems(Menu menu) { |
| if (mTextView.canCut()) { |
| menu.add(Menu.NONE, TextView.ID_CUT, MENU_ITEM_ORDER_CUT, |
| com.android.internal.R.string.cut). |
| setAlphabeticShortcut('x'). |
| setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); |
| } |
| |
| if (mTextView.canCopy()) { |
| menu.add(Menu.NONE, TextView.ID_COPY, MENU_ITEM_ORDER_COPY, |
| com.android.internal.R.string.copy). |
| setAlphabeticShortcut('c'). |
| setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); |
| } |
| |
| if (mTextView.canPaste()) { |
| menu.add(Menu.NONE, TextView.ID_PASTE, MENU_ITEM_ORDER_PASTE, |
| com.android.internal.R.string.paste). |
| setAlphabeticShortcut('v'). |
| setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS); |
| } |
| |
| if (mTextView.canShare()) { |
| menu.add(Menu.NONE, TextView.ID_SHARE, MENU_ITEM_ORDER_SHARE, |
| com.android.internal.R.string.share). |
| setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); |
| } |
| |
| updateSelectAllItem(menu); |
| updateReplaceItem(menu); |
| } |
| |
| @Override |
| public boolean onPrepareActionMode(ActionMode mode, Menu menu) { |
| updateSelectAllItem(menu); |
| updateReplaceItem(menu); |
| |
| Callback customCallback = getCustomCallback(); |
| if (customCallback != null) { |
| return customCallback.onPrepareActionMode(mode, menu); |
| } |
| return true; |
| } |
| |
| private void updateSelectAllItem(Menu menu) { |
| boolean canSelectAll = mTextView.canSelectAllText(); |
| boolean selectAllItemExists = menu.findItem(TextView.ID_SELECT_ALL) != null; |
| if (canSelectAll && !selectAllItemExists) { |
| menu.add(Menu.NONE, TextView.ID_SELECT_ALL, MENU_ITEM_ORDER_SELECT_ALL, |
| com.android.internal.R.string.selectAll) |
| .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); |
| } else if (!canSelectAll && selectAllItemExists) { |
| menu.removeItem(TextView.ID_SELECT_ALL); |
| } |
| } |
| |
| private void updateReplaceItem(Menu menu) { |
| boolean canReplace = mTextView.isSuggestionsEnabled() && shouldOfferToShowSuggestions(); |
| boolean replaceItemExists = menu.findItem(TextView.ID_REPLACE) != null; |
| if (canReplace && !replaceItemExists) { |
| menu.add(Menu.NONE, TextView.ID_REPLACE, MENU_ITEM_ORDER_REPLACE, |
| com.android.internal.R.string.replace) |
| .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); |
| } else if (!canReplace && replaceItemExists) { |
| menu.removeItem(TextView.ID_REPLACE); |
| } |
| } |
| |
| @Override |
| public boolean onActionItemClicked(ActionMode mode, MenuItem item) { |
| if (mProcessTextIntentActionsHandler.performMenuItemAction(item)) { |
| return true; |
| } |
| Callback customCallback = getCustomCallback(); |
| if (customCallback != null && customCallback.onActionItemClicked(mode, item)) { |
| return true; |
| } |
| return mTextView.onTextContextMenuItem(item.getItemId()); |
| } |
| |
| @Override |
| public void onDestroyActionMode(ActionMode mode) { |
| // Clear mTextActionMode not to recursively destroy action mode by clearing selection. |
| mTextActionMode = null; |
| Callback customCallback = getCustomCallback(); |
| if (customCallback != null) { |
| customCallback.onDestroyActionMode(mode); |
| } |
| |
| if (!mPreserveSelection) { |
| /* |
| * Leave current selection when we tentatively destroy action mode for the |
| * selection. If we're detaching from a window, we'll bring back the selection |
| * mode when (if) we get reattached. |
| */ |
| Selection.setSelection((Spannable) mTextView.getText(), |
| mTextView.getSelectionEnd()); |
| } |
| |
| if (mSelectionModifierCursorController != null) { |
| mSelectionModifierCursorController.hide(); |
| } |
| } |
| |
| @Override |
| public void onGetContentRect(ActionMode mode, View view, Rect outRect) { |
| if (!view.equals(mTextView) || mTextView.getLayout() == null) { |
| super.onGetContentRect(mode, view, outRect); |
| return; |
| } |
| if (mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { |
| // We have a selection. |
| mSelectionPath.reset(); |
| mTextView.getLayout().getSelectionPath( |
| mTextView.getSelectionStart(), mTextView.getSelectionEnd(), mSelectionPath); |
| mSelectionPath.computeBounds(mSelectionBounds, true); |
| mSelectionBounds.bottom += mHandleHeight; |
| } else if (mCursorCount == 2) { |
| // We have a split cursor. In this case, we take the rectangle that includes both |
| // parts of the cursor to ensure we don't obscure either of them. |
| Rect firstCursorBounds = mCursorDrawable[0].getBounds(); |
| Rect secondCursorBounds = mCursorDrawable[1].getBounds(); |
| mSelectionBounds.set( |
| Math.min(firstCursorBounds.left, secondCursorBounds.left), |
| Math.min(firstCursorBounds.top, secondCursorBounds.top), |
| Math.max(firstCursorBounds.right, secondCursorBounds.right), |
| Math.max(firstCursorBounds.bottom, secondCursorBounds.bottom) |
| + mHandleHeight); |
| } else { |
| // We have a single cursor. |
| Layout layout = mTextView.getLayout(); |
| int line = layout.getLineForOffset(mTextView.getSelectionStart()); |
| float primaryHorizontal = clampHorizontalPosition(null, |
| layout.getPrimaryHorizontal(mTextView.getSelectionStart())); |
| mSelectionBounds.set( |
| primaryHorizontal, |
| layout.getLineTop(line), |
| primaryHorizontal, |
| layout.getLineTop(line + 1) + mHandleHeight); |
| } |
| // Take TextView's padding and scroll into account. |
| int textHorizontalOffset = mTextView.viewportToContentHorizontalOffset(); |
| int textVerticalOffset = mTextView.viewportToContentVerticalOffset(); |
| outRect.set( |
| (int) Math.floor(mSelectionBounds.left + textHorizontalOffset), |
| (int) Math.floor(mSelectionBounds.top + textVerticalOffset), |
| (int) Math.ceil(mSelectionBounds.right + textHorizontalOffset), |
| (int) Math.ceil(mSelectionBounds.bottom + textVerticalOffset)); |
| } |
| } |
| |
| /** |
| * A listener to call {@link InputMethodManager#updateCursorAnchorInfo(View, CursorAnchorInfo)} |
| * while the input method is requesting the cursor/anchor position. Does nothing as long as |
| * {@link InputMethodManager#isWatchingCursor(View)} returns false. |
| */ |
| private final class CursorAnchorInfoNotifier implements TextViewPositionListener { |
| final CursorAnchorInfo.Builder mSelectionInfoBuilder = new CursorAnchorInfo.Builder(); |
| final int[] mTmpIntOffset = new int[2]; |
| final Matrix mViewToScreenMatrix = new Matrix(); |
| |
| @Override |
| public void updatePosition(int parentPositionX, int parentPositionY, |
| boolean parentPositionChanged, boolean parentScrolled) { |
| final InputMethodState ims = mInputMethodState; |
| if (ims == null || ims.mBatchEditNesting > 0) { |
| return; |
| } |
| final InputMethodManager imm = InputMethodManager.peekInstance(); |
| if (null == imm) { |
| return; |
| } |
| if (!imm.isActive(mTextView)) { |
| return; |
| } |
| // Skip if the IME has not requested the cursor/anchor position. |
| if (!imm.isCursorAnchorInfoEnabled()) { |
| return; |
| } |
| Layout layout = mTextView.getLayout(); |
| if (layout == null) { |
| return; |
| } |
| |
| final CursorAnchorInfo.Builder builder = mSelectionInfoBuilder; |
| builder.reset(); |
| |
| final int selectionStart = mTextView.getSelectionStart(); |
| builder.setSelectionRange(selectionStart, mTextView.getSelectionEnd()); |
| |
| // Construct transformation matrix from view local coordinates to screen coordinates. |
| mViewToScreenMatrix.set(mTextView.getMatrix()); |
| mTextView.getLocationOnScreen(mTmpIntOffset); |
| mViewToScreenMatrix.postTranslate(mTmpIntOffset[0], mTmpIntOffset[1]); |
| builder.setMatrix(mViewToScreenMatrix); |
| |
| final float viewportToContentHorizontalOffset = |
| mTextView.viewportToContentHorizontalOffset(); |
| final float viewportToContentVerticalOffset = |
| mTextView.viewportToContentVerticalOffset(); |
| |
| final CharSequence text = mTextView.getText(); |
| if (text instanceof Spannable) { |
| final Spannable sp = (Spannable) text; |
| int composingTextStart = EditableInputConnection.getComposingSpanStart(sp); |
| int composingTextEnd = EditableInputConnection.getComposingSpanEnd(sp); |
| if (composingTextEnd < composingTextStart) { |
| final int temp = composingTextEnd; |
| composingTextEnd = composingTextStart; |
| composingTextStart = temp; |
| } |
| final boolean hasComposingText = |
| (0 <= composingTextStart) && (composingTextStart < composingTextEnd); |
| if (hasComposingText) { |
| final CharSequence composingText = text.subSequence(composingTextStart, |
| composingTextEnd); |
| builder.setComposingText(composingTextStart, composingText); |
| |
| final int minLine = layout.getLineForOffset(composingTextStart); |
| final int maxLine = layout.getLineForOffset(composingTextEnd - 1); |
| for (int line = minLine; line <= maxLine; ++line) { |
| final int lineStart = layout.getLineStart(line); |
| final int lineEnd = layout.getLineEnd(line); |
| final int offsetStart = Math.max(lineStart, composingTextStart); |
| final int offsetEnd = Math.min(lineEnd, composingTextEnd); |
| final boolean ltrLine = |
| layout.getParagraphDirection(line) == Layout.DIR_LEFT_TO_RIGHT; |
| final float[] widths = new float[offsetEnd - offsetStart]; |
| layout.getPaint().getTextWidths(text, offsetStart, offsetEnd, widths); |
| final float top = layout.getLineTop(line); |
| final float bottom = layout.getLineBottom(line); |
| for (int offset = offsetStart; offset < offsetEnd; ++offset) { |
| final float charWidth = widths[offset - offsetStart]; |
| final boolean isRtl = layout.isRtlCharAt(offset); |
| final float primary = layout.getPrimaryHorizontal(offset); |
| final float secondary = layout.getSecondaryHorizontal(offset); |
| // TODO: This doesn't work perfectly for text with custom styles and |
| // TAB chars. |
| final float left; |
| final float right; |
| if (ltrLine) { |
| if (isRtl) { |
| left = secondary - charWidth; |
| right = secondary; |
| } else { |
| left = primary; |
| right = primary + charWidth; |
| } |
| } else { |
| if (!isRtl) { |
| left = secondary; |
| right = secondary + charWidth; |
| } else { |
| left = primary - charWidth; |
| right = primary; |
| } |
| } |
| // TODO: Check top-right and bottom-left as well. |
| final float localLeft = left + viewportToContentHorizontalOffset; |
| final float localRight = right + viewportToContentHorizontalOffset; |
| final float localTop = top + viewportToContentVerticalOffset; |
| final float localBottom = bottom + viewportToContentVerticalOffset; |
| final boolean isTopLeftVisible = isPositionVisible(localLeft, localTop); |
| final boolean isBottomRightVisible = |
| isPositionVisible(localRight, localBottom); |
| int characterBoundsFlags = 0; |
| if (isTopLeftVisible || isBottomRightVisible) { |
| characterBoundsFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; |
| } |
| if (!isTopLeftVisible || !isBottomRightVisible) { |
| characterBoundsFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; |
| } |
| if (isRtl) { |
| characterBoundsFlags |= CursorAnchorInfo.FLAG_IS_RTL; |
| } |
| // Here offset is the index in Java chars. |
| builder.addCharacterBounds(offset, localLeft, localTop, localRight, |
| localBottom, characterBoundsFlags); |
| } |
| } |
| } |
| } |
| |
| // Treat selectionStart as the insertion point. |
| if (0 <= selectionStart) { |
| final int offset = selectionStart; |
| final int line = layout.getLineForOffset(offset); |
| final float insertionMarkerX = layout.getPrimaryHorizontal(offset) |
| + viewportToContentHorizontalOffset; |
| final float insertionMarkerTop = layout.getLineTop(line) |
| + viewportToContentVerticalOffset; |
| final float insertionMarkerBaseline = layout.getLineBaseline(line) |
| + viewportToContentVerticalOffset; |
| final float insertionMarkerBottom = layout.getLineBottom(line) |
| + viewportToContentVerticalOffset; |
| final boolean isTopVisible = |
| isPositionVisible(insertionMarkerX, insertionMarkerTop); |
| final boolean isBottomVisible = |
| isPositionVisible(insertionMarkerX, insertionMarkerBottom); |
| int insertionMarkerFlags = 0; |
| if (isTopVisible || isBottomVisible) { |
| insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_VISIBLE_REGION; |
| } |
| if (!isTopVisible || !isBottomVisible) { |
| insertionMarkerFlags |= CursorAnchorInfo.FLAG_HAS_INVISIBLE_REGION; |
| } |
| if (layout.isRtlCharAt(offset)) { |
| insertionMarkerFlags |= CursorAnchorInfo.FLAG_IS_RTL; |
| } |
| builder.setInsertionMarkerLocation(insertionMarkerX, insertionMarkerTop, |
| insertionMarkerBaseline, insertionMarkerBottom, insertionMarkerFlags); |
| } |
| |
| imm.updateCursorAnchorInfo(mTextView, builder.build()); |
| } |
| } |
| |
| @VisibleForTesting |
| public abstract class HandleView extends View implements TextViewPositionListener { |
| protected Drawable mDrawable; |
| protected Drawable mDrawableLtr; |
| protected Drawable mDrawableRtl; |
| private final PopupWindow mContainer; |
| // Position with respect to the parent TextView |
| private int mPositionX, mPositionY; |
| private boolean mIsDragging; |
| // Offset from touch position to mPosition |
| private float mTouchToWindowOffsetX, mTouchToWindowOffsetY; |
| protected int mHotspotX; |
| protected int mHorizontalGravity; |
| // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up |
| private float mTouchOffsetY; |
| // Where the touch position should be on the handle to ensure a maximum cursor visibility |
| private float mIdealVerticalOffset; |
| // Parent's (TextView) previous position in window |
| private int mLastParentX, mLastParentY; |
| // Previous text character offset |
| protected int mPreviousOffset = -1; |
| // Previous text character offset |
| private boolean mPositionHasChanged = true; |
| // Minimum touch target size for handles |
| private int mMinSize; |
| // Indicates the line of text that the handle is on. |
| protected int mPrevLine = UNSET_LINE; |
| // Indicates the line of text that the user was touching. This can differ from mPrevLine |
| // when selecting text when the handles jump to the end / start of words which may be on |
| // a different line. |
| protected int mPreviousLineTouched = UNSET_LINE; |
| |
| private HandleView(Drawable drawableLtr, Drawable drawableRtl, final int id) { |
| super(mTextView.getContext()); |
| setId(id); |
| mContainer = new PopupWindow(mTextView.getContext(), null, |
| com.android.internal.R.attr.textSelectHandleWindowStyle); |
| mContainer.setSplitTouchEnabled(true); |
| mContainer.setClippingEnabled(false); |
| mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); |
| mContainer.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); |
| mContainer.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); |
| mContainer.setContentView(this); |
| |
| mDrawableLtr = drawableLtr; |
| mDrawableRtl = drawableRtl; |
| mMinSize = mTextView.getContext().getResources().getDimensionPixelSize( |
| com.android.internal.R.dimen.text_handle_min_size); |
| |
| updateDrawable(); |
| |
| final int handleHeight = getPreferredHeight(); |
| mTouchOffsetY = -0.3f * handleHeight; |
| mIdealVerticalOffset = 0.7f * handleHeight; |
| } |
| |
| public float getIdealVerticalOffset() { |
| return mIdealVerticalOffset; |
| } |
| |
| protected void updateDrawable() { |
| if (mIsDragging) { |
| // Don't update drawable during dragging. |
| return; |
| } |
| final Layout layout = mTextView.getLayout(); |
| if (layout == null) { |
| return; |
| } |
| final int offset = getCurrentCursorOffset(); |
| final boolean isRtlCharAtOffset = isAtRtlRun(layout, offset); |
| final Drawable oldDrawable = mDrawable; |
| mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr; |
| mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset); |
| mHorizontalGravity = getHorizontalGravity(isRtlCharAtOffset); |
| if (oldDrawable != mDrawable && isShowing()) { |
| // Update popup window position. |
| mPositionX = getCursorHorizontalPosition(layout, offset) - mHotspotX - |
| getHorizontalOffset() + getCursorOffset(); |
| mPositionX += mTextView.viewportToContentHorizontalOffset(); |
| mPositionHasChanged = true; |
| updatePosition(mLastParentX, mLastParentY, false, false); |
| postInvalidate(); |
| } |
| } |
| |
| protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun); |
| protected abstract int getHorizontalGravity(boolean isRtlRun); |
| |
| // Touch-up filter: number of previous positions remembered |
| private static final int HISTORY_SIZE = 5; |
| private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150; |
| private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350; |
| private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; |
| private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; |
| private int mPreviousOffsetIndex = 0; |
| private int mNumberPreviousOffsets = 0; |
| |
| private void startTouchUpFilter(int offset) { |
| mNumberPreviousOffsets = 0; |
| addPositionToTouchUpFilter(offset); |
| } |
| |
| private void addPositionToTouchUpFilter(int offset) { |
| mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; |
| mPreviousOffsets[mPreviousOffsetIndex] = offset; |
| mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); |
| mNumberPreviousOffsets++; |
| } |
| |
| private void filterOnTouchUp() { |
| final long now = SystemClock.uptimeMillis(); |
| int i = 0; |
| int index = mPreviousOffsetIndex; |
| final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); |
| while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) { |
| i++; |
| index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; |
| } |
| |
| if (i > 0 && i < iMax && |
| (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) { |
| positionAtCursorOffset(mPreviousOffsets[index], false); |
| } |
| } |
| |
| public boolean offsetHasBeenChanged() { |
| return mNumberPreviousOffsets > 1; |
| } |
| |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| setMeasuredDimension(getPreferredWidth(), getPreferredHeight()); |
| } |
| |
| @Override |
| public void invalidate() { |
| super.invalidate(); |
| if (isShowing()) { |
| positionAtCursorOffset(getCurrentCursorOffset(), true); |
| } |
| }; |
| |
| private int getPreferredWidth() { |
| return Math.max(mDrawable.getIntrinsicWidth(), mMinSize); |
| } |
| |
| private int getPreferredHeight() { |
| return Math.max(mDrawable.getIntrinsicHeight(), mMinSize); |
| } |
| |
| public void show() { |
| if (isShowing()) return; |
| |
| getPositionListener().addSubscriber(this, true /* local position may change */); |
| |
| // Make sure the offset is always considered new, even when focusing at same position |
| mPreviousOffset = -1; |
| positionAtCursorOffset(getCurrentCursorOffset(), false); |
| } |
| |
| protected void dismiss() { |
| mIsDragging = false; |
| mContainer.dismiss(); |
| onDetached(); |
| } |
| |
| public void hide() { |
| dismiss(); |
| |
| getPositionListener().removeSubscriber(this); |
| } |
| |
| public boolean isShowing() { |
| return mContainer.isShowing(); |
| } |
| |
| private boolean isVisible() { |
| // Always show a dragging handle. |
| if (mIsDragging) { |
| return true; |
| } |
| |
| if (mTextView.isInBatchEditMode()) { |
| return false; |
| } |
| |
| return isPositionVisible(mPositionX + mHotspotX + getHorizontalOffset(), mPositionY); |
| } |
| |
| public abstract int getCurrentCursorOffset(); |
| |
| protected abstract void updateSelection(int offset); |
| |
| public abstract void updatePosition(float x, float y); |
| |
| protected boolean isAtRtlRun(@NonNull Layout layout, int offset) { |
| return layout.isRtlCharAt(offset); |
| } |
| |
| @VisibleForTesting |
| public float getHorizontal(@NonNull Layout layout, int offset) { |
| return layout.getPrimaryHorizontal(offset); |
| } |
| |
| protected int getOffsetAtCoordinate(@NonNull Layout layout, int line, float x) { |
| return mTextView.getOffsetAtCoordinate(line, x); |
| } |
| |
| /** |
| * @param offset Cursor offset. Must be in [-1, length]. |
| * @param forceUpdatePosition whether to force update the position. This should be true |
| * when If the parent has been scrolled, for example. |
| */ |
| protected void positionAtCursorOffset(int offset, boolean forceUpdatePosition) { |
| // A HandleView relies on the layout, which may be nulled by external methods |
| Layout layout = mTextView.getLayout(); |
| if (layout == null) { |
| // Will update controllers' state, hiding them and stopping selection mode if needed |
| prepareCursorControllers(); |
| return; |
| } |
| layout = mTextView.getLayout(); |
| |
| boolean offsetChanged = offset != mPreviousOffset; |
| if (offsetChanged || forceUpdatePosition) { |
| if (offsetChanged) { |
| updateSelection(offset); |
| addPositionToTouchUpFilter(offset); |
| } |
| final int line = layout.getLineForOffset(offset); |
| mPrevLine = line; |
| |
| mPositionX = getCursorHorizontalPosition(layout, offset) - mHotspotX - |
| getHorizontalOffset() + getCursorOffset(); |
| mPositionY = layout.getLineBottom(line); |
| |
| // Take TextView's padding and scroll into account. |
| mPositionX += mTextView.viewportToContentHorizontalOffset(); |
| mPositionY += mTextView.viewportToContentVerticalOffset(); |
| |
| mPreviousOffset = offset; |
| mPositionHasChanged = true; |
| } |
| } |
| |
| /** |
| * Return the clamped horizontal position for the first cursor. |
| * |
| * @param layout Text layout. |
| * @param offset Character offset for the cursor. |
| * @return The clamped horizontal position for the cursor. |
| */ |
| int getCursorHorizontalPosition(Layout layout, int offset) { |
| return (int) (getHorizontal(layout, offset) - 0.5f); |
| } |
| |
| public void updatePosition(int parentPositionX, int parentPositionY, |
| boolean parentPositionChanged, boolean parentScrolled) { |
| positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled); |
| if (parentPositionChanged || mPositionHasChanged) { |
| if (mIsDragging) { |
| // Update touchToWindow offset in case of parent scrolling while dragging |
| if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) { |
| mTouchToWindowOffsetX += parentPositionX - mLastParentX; |
| mTouchToWindowOffsetY += parentPositionY - mLastParentY; |
| mLastParentX = parentPositionX; |
| mLastParentY = parentPositionY; |
| } |
| |
| onHandleMoved(); |
| } |
| |
| if (isVisible()) { |
| // Transform to the window coordinates to follow the view tranformation. |
| final int[] pts = { mPositionX + mHotspotX + getHorizontalOffset(), mPositionY}; |
| mTextView.transformFromViewToWindowSpace(pts); |
| pts[0] -= mHotspotX + getHorizontalOffset(); |
| |
| if (isShowing()) { |
| mContainer.update(pts[0], pts[1], -1, -1); |
| } else { |
| mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, pts[0], pts[1]); |
| } |
| } else { |
| if (isShowing()) { |
| dismiss(); |
| } |
| } |
| |
| mPositionHasChanged = false; |
| } |
| } |
| |
| @Override |
| protected void onDraw(Canvas c) { |
| final int drawWidth = mDrawable.getIntrinsicWidth(); |
| final int left = getHorizontalOffset(); |
| |
| mDrawable.setBounds(left, 0, left + drawWidth, mDrawable.getIntrinsicHeight()); |
| mDrawable.draw(c); |
| } |
| |
| private int getHorizontalOffset() { |
| final int width = getPreferredWidth(); |
| final int drawWidth = mDrawable.getIntrinsicWidth(); |
| final int left; |
| switch (mHorizontalGravity) { |
| case Gravity.LEFT: |
| left = 0; |
| break; |
| default: |
| case Gravity.CENTER: |
| left = (width - drawWidth) / 2; |
| break; |
| case Gravity.RIGHT: |
| left = width - drawWidth; |
| break; |
| } |
| return left; |
| } |
| |
| protected int getCursorOffset() { |
| return 0; |
| } |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent ev) { |
| updateFloatingToolbarVisibility(ev); |
| |
| switch (ev.getActionMasked()) { |
| case MotionEvent.ACTION_DOWN: { |
| startTouchUpFilter(getCurrentCursorOffset()); |
| mTouchToWindowOffsetX = ev.getRawX() - mPositionX; |
| mTouchToWindowOffsetY = ev.getRawY() - mPositionY; |
| |
| final PositionListener positionListener = getPositionListener(); |
| mLastParentX = positionListener.getPositionX(); |
| mLastParentY = positionListener.getPositionY(); |
| mIsDragging = true; |
| mPreviousLineTouched = UNSET_LINE; |
| break; |
| } |
| |
| case MotionEvent.ACTION_MOVE: { |
| final float rawX = ev.getRawX(); |
| final float rawY = ev.getRawY(); |
| |
| // Vertical hysteresis: vertical down movement tends to snap to ideal offset |
| final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY; |
| final float currentVerticalOffset = rawY - mPositionY - mLastParentY; |
| float newVerticalOffset; |
| if (previousVerticalOffset < mIdealVerticalOffset) { |
| newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset); |
| newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset); |
| } else { |
| newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset); |
| newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset); |
| } |
| mTouchToWindowOffsetY = newVerticalOffset + mLastParentY; |
| |
| final float newPosX = |
| rawX - mTouchToWindowOffsetX + mHotspotX + getHorizontalOffset(); |
| final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY; |
| |
| updatePosition(newPosX, newPosY); |
| break; |
| } |
| |
| case MotionEvent.ACTION_UP: |
| filterOnTouchUp(); |
| mIsDragging = false; |
| updateDrawable(); |
| break; |
| |
| case MotionEvent.ACTION_CANCEL: |
| mIsDragging = false; |
| updateDrawable(); |
| break; |
| } |
| return true; |
| } |
| |
| public boolean isDragging() { |
| return mIsDragging; |
| } |
| |
| void onHandleMoved() {} |
| |
| public void onDetached() {} |
| } |
| |
| private class InsertionHandleView extends HandleView { |
| private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000; |
| private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds |
| |
| // Used to detect taps on the insertion handle, which will affect the insertion action mode |
| private float mDownPositionX, mDownPositionY; |
| private Runnable mHider; |
| |
| public InsertionHandleView(Drawable drawable) { |
| super(drawable, drawable, com.android.internal.R.id.insertion_handle); |
| } |
| |
| @Override |
| public void show() { |
| super.show(); |
| |
| final long durationSinceCutOrCopy = |
| SystemClock.uptimeMillis() - TextView.sLastCutCopyOrTextChangedTime; |
| |
| // Cancel the single tap delayed runnable. |
| if (mInsertionActionModeRunnable != null |
| && ((mTapState == TAP_STATE_DOUBLE_TAP) |
| || (mTapState == TAP_STATE_TRIPLE_CLICK) |
| || isCursorInsideEasyCorrectionSpan())) { |
| mTextView.removeCallbacks(mInsertionActionModeRunnable); |
| } |
| |
| // Prepare and schedule the single tap runnable to run exactly after the double tap |
| // timeout has passed. |
| if ((mTapState != TAP_STATE_DOUBLE_TAP) && (mTapState != TAP_STATE_TRIPLE_CLICK) |
| && !isCursorInsideEasyCorrectionSpan() |
| && (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION)) { |
| if (mTextActionMode == null) { |
| if (mInsertionActionModeRunnable == null) { |
| mInsertionActionModeRunnable = new Runnable() { |
| @Override |
| public void run() { |
| startInsertionActionMode(); |
| } |
| }; |
| } |
| mTextView.postDelayed( |
| mInsertionActionModeRunnable, |
| ViewConfiguration.getDoubleTapTimeout() + 1); |
| } |
| |
| } |
| |
| hideAfterDelay(); |
| } |
| |
| private void hideAfterDelay() { |
| if (mHider == null) { |
| mHider = new Runnable() { |
| public void run() { |
| hide(); |
| } |
| }; |
| } else { |
| removeHiderCallback(); |
| } |
| mTextView.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT); |
| } |
| |
| private void removeHiderCallback() { |
| if (mHider != null) { |
| mTextView.removeCallbacks(mHider); |
| } |
| } |
| |
| @Override |
| protected int getHotspotX(Drawable drawable, boolean isRtlRun) { |
| return drawable.getIntrinsicWidth() / 2; |
| } |
| |
| @Override |
| protected int getHorizontalGravity(boolean isRtlRun) { |
| return Gravity.CENTER_HORIZONTAL; |
| } |
| |
| @Override |
| protected int getCursorOffset() { |
| int offset = super.getCursorOffset(); |
| final Drawable cursor = mCursorCount > 0 ? mCursorDrawable[0] : null; |
| if (cursor != null) { |
| cursor.getPadding(mTempRect); |
| offset += (cursor.getIntrinsicWidth() - mTempRect.left - mTempRect.right) / 2; |
| } |
| return offset; |
| } |
| |
| @Override |
| int getCursorHorizontalPosition(Layout layout, int offset) { |
| final Drawable drawable = mCursorCount > 0 ? mCursorDrawable[0] : null; |
| if (drawable != null) { |
| final float horizontal = getHorizontal(layout, offset); |
| return clampHorizontalPosition(drawable, horizontal) + mTempRect.left; |
| } |
| return super.getCursorHorizontalPosition(layout, offset); |
| } |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent ev) { |
| final boolean result = super.onTouchEvent(ev); |
| |
| switch (ev.getActionMasked()) { |
| case MotionEvent.ACTION_DOWN: |
| mDownPositionX = ev.getRawX(); |
| mDownPositionY = ev.getRawY(); |
| break; |
| |
| case MotionEvent.ACTION_UP: |
| if (!offsetHasBeenChanged()) { |
| final float deltaX = mDownPositionX - ev.getRawX(); |
| final float deltaY = mDownPositionY - ev.getRawY(); |
| final float distanceSquared = deltaX * deltaX + deltaY * deltaY; |
| |
| final ViewConfiguration viewConfiguration = ViewConfiguration.get( |
| mTextView.getContext()); |
| final int touchSlop = viewConfiguration.getScaledTouchSlop(); |
| |
| if (distanceSquared < touchSlop * touchSlop) { |
| // Tapping on the handle toggles the insertion action mode. |
| if (mTextActionMode != null) { |
| stopTextActionMode(); |
| } else { |
| startInsertionActionMode(); |
| } |
| } |
| } else { |
| if (mTextActionMode != null) { |
| mTextActionMode.invalidateContentRect(); |
| } |
| } |
| hideAfterDelay(); |
| break; |
| |
| case MotionEvent.ACTION_CANCEL: |
| hideAfterDelay(); |
| break; |
| |
| default: |
| break; |
| } |
| |
| return result; |
| } |
| |
| @Override |
| public int getCurrentCursorOffset() { |
| return mTextView.getSelectionStart(); |
| } |
| |
| @Override |
| public void updateSelection(int offset) { |
| Selection.setSelection((Spannable) mTextView.getText(), offset); |
| } |
| |
| @Override |
| public void updatePosition(float x, float y) { |
| Layout layout = mTextView.getLayout(); |
| int offset; |
| if (layout != null) { |
| if (mPreviousLineTouched == UNSET_LINE) { |
| mPreviousLineTouched = mTextView.getLineAtCoordinate(y); |
| } |
| int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); |
| offset = getOffsetAtCoordinate(layout, currLine, x); |
| mPreviousLineTouched = currLine; |
| } else { |
| offset = -1; |
| } |
| positionAtCursorOffset(offset, false); |
| if (mTextActionMode != null) { |
| mTextActionMode.invalidate(); |
| } |
| } |
| |
| @Override |
| void onHandleMoved() { |
| super.onHandleMoved(); |
| removeHiderCallback(); |
| } |
| |
| @Override |
| public void onDetached() { |
| super.onDetached(); |
| removeHiderCallback(); |
| } |
| } |
| |
| @Retention(RetentionPolicy.SOURCE) |
| @IntDef({HANDLE_TYPE_SELECTION_START, HANDLE_TYPE_SELECTION_END}) |
| public @interface HandleType {} |
| public static final int HANDLE_TYPE_SELECTION_START = 0; |
| public static final int HANDLE_TYPE_SELECTION_END = 1; |
| |
| private class SelectionHandleView extends HandleView { |
| // Indicates the handle type, selection start (HANDLE_TYPE_SELECTION_START) or selection |
| // end (HANDLE_TYPE_SELECTION_END). |
| @HandleType |
| private final int mHandleType; |
| // Indicates whether the cursor is making adjustments within a word. |
| private boolean mInWord = false; |
| // Difference between touch position and word boundary position. |
| private float mTouchWordDelta; |
| // X value of the previous updatePosition call. |
| private float mPrevX; |
| // Indicates if the handle has moved a boundary between LTR and RTL text. |
| private boolean mLanguageDirectionChanged = false; |
| // Distance from edge of horizontally scrolling text view |
| // to use to switch to character mode. |
| private final float mTextViewEdgeSlop; |
| // Used to save text view location. |
| private final int[] mTextViewLocation = new int[2]; |
| |
| public SelectionHandleView(Drawable drawableLtr, Drawable drawableRtl, int id, |
| @HandleType int handleType) { |
| super(drawableLtr, drawableRtl, id); |
| mHandleType = handleType; |
| ViewConfiguration viewConfiguration = ViewConfiguration.get(mTextView.getContext()); |
| mTextViewEdgeSlop = viewConfiguration.getScaledTouchSlop() * 4; |
| } |
| |
| private boolean isStartHandle() { |
| return mHandleType == HANDLE_TYPE_SELECTION_START; |
| } |
| |
| @Override |
| protected int getHotspotX(Drawable drawable, boolean isRtlRun) { |
| if (isRtlRun == isStartHandle()) { |
| return drawable.getIntrinsicWidth() / 4; |
| } else { |
| return (drawable.getIntrinsicWidth() * 3) / 4; |
| } |
| } |
| |
| @Override |
| protected int getHorizontalGravity(boolean isRtlRun) { |
| return (isRtlRun == isStartHandle()) ? Gravity.LEFT : Gravity.RIGHT; |
| } |
| |
| @Override |
| public int getCurrentCursorOffset() { |
| return isStartHandle() ? mTextView.getSelectionStart() : mTextView.getSelectionEnd(); |
| } |
| |
| @Override |
| protected void updateSelection(int offset) { |
| if (isStartHandle()) { |
| Selection.setSelection((Spannable) mTextView.getText(), offset, |
| mTextView.getSelectionEnd()); |
| } else { |
| Selection.setSelection((Spannable) mTextView.getText(), |
| mTextView.getSelectionStart(), offset); |
| } |
| updateDrawable(); |
| if (mTextActionMode != null) { |
| mTextActionMode.invalidate(); |
| } |
| } |
| |
| @Override |
| public void updatePosition(float x, float y) { |
| final Layout layout = mTextView.getLayout(); |
| if (layout == null) { |
| // HandleView will deal appropriately in positionAtCursorOffset when |
| // layout is null. |
| positionAndAdjustForCrossingHandles(mTextView.getOffsetForPosition(x, y)); |
| return; |
| } |
| |
| if (mPreviousLineTouched == UNSET_LINE) { |
| mPreviousLineTouched = mTextView.getLineAtCoordinate(y); |
| } |
| |
| boolean positionCursor = false; |
| final int anotherHandleOffset = |
| isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); |
| int currLine = getCurrentLineAdjustedForSlop(layout, mPreviousLineTouched, y); |
| int initialOffset = getOffsetAtCoordinate(layout, currLine, x); |
| |
| if (isStartHandle() && initialOffset >= anotherHandleOffset |
| || !isStartHandle() && initialOffset <= anotherHandleOffset) { |
| // Handles have crossed, bound it to the first selected line and |
| // adjust by word / char as normal. |
| currLine = layout.getLineForOffset(anotherHandleOffset); |
| initialOffset = getOffsetAtCoordinate(layout, currLine, x); |
| } |
| |
| int offset = initialOffset; |
| final int wordEnd = getWordEnd(offset); |
| final int wordStart = getWordStart(offset); |
| |
| if (mPrevX == UNSET_X_VALUE) { |
| mPrevX = x; |
| } |
| |
| final int currentOffset = getCurrentCursorOffset(); |
| final boolean rtlAtCurrentOffset = isAtRtlRun(layout, currentOffset); |
| final boolean atRtl = isAtRtlRun(layout, offset); |
| final boolean isLvlBoundary = layout.isLevelBoundary(offset); |
| |
| // We can't determine if the user is expanding or shrinking the selection if they're |
| // on a bi-di boundary, so until they've moved past the boundary we'll just place |
| // the cursor at the current position. |
| if (isLvlBoundary || (rtlAtCurrentOffset && !atRtl) || (!rtlAtCurrentOffset && atRtl)) { |
| // We're on a boundary or this is the first direction change -- just update |
| // to the current position. |
| mLanguageDirectionChanged = true; |
| mTouchWordDelta = 0.0f; |
| positionAndAdjustForCrossingHandles(offset); |
| return; |
| } else if (mLanguageDirectionChanged && !isLvlBoundary) { |
| // We've just moved past the boundary so update the position. After this we can |
| // figure out if the user is expanding or shrinking to go by word or character. |
| positionAndAdjustForCrossingHandles(offset); |
| mTouchWordDelta = 0.0f; |
| mLanguageDirectionChanged = false; |
| return; |
| } |
| |
| boolean isExpanding; |
| final float xDiff = x - mPrevX; |
| if (isStartHandle()) { |
| isExpanding = currLine < mPreviousLineTouched; |
| } else { |
| isExpanding = currLine > mPreviousLineTouched; |
| } |
| if (atRtl == isStartHandle()) { |
| isExpanding |= xDiff > 0; |
| } else { |
| isExpanding |= xDiff < 0; |
| } |
| |
| if (mTextView.getHorizontallyScrolling()) { |
| if (positionNearEdgeOfScrollingView(x, atRtl) |
| && ((isStartHandle() && mTextView.getScrollX() != 0) |
| || (!isStartHandle() |
| && mTextView.canScrollHorizontally(atRtl ? -1 : 1))) |
| && ((isExpanding && ((isStartHandle() && offset < currentOffset) |
| || (!isStartHandle() && offset > currentOffset))) |
| || !isExpanding)) { |
| // If we're expanding ensure that the offset is actually expanding compared to |
| // the current offset, if the handle snapped to the word, the finger position |
| // may be out of sync and we don't want the selection to jump back. |
| mTouchWordDelta = 0.0f; |
| final int nextOffset = (atRtl == isStartHandle()) |
| ? layout.getOffsetToRightOf(mPreviousOffset) |
| : layout.getOffsetToLeftOf(mPreviousOffset); |
| positionAndAdjustForCrossingHandles(nextOffset); |
| return; |
| } |
| } |
| |
| if (isExpanding) { |
| // User is increasing the selection. |
| int wordBoundary = isStartHandle() ? wordStart : wordEnd; |
| final boolean snapToWord = (!mInWord |
| || (isStartHandle() ? currLine < mPrevLine : currLine > mPrevLine)) |
| && atRtl == isAtRtlRun(layout, wordBoundary); |
| if (snapToWord) { |
| // Sometimes words can be broken across lines (Chinese, hyphenation). |
| // We still snap to the word boundary but we only use the letters on the |
| // current line to determine if the user is far enough into the word to snap. |
| if (layout.getLineForOffset(wordBoundary) != currLine) { |
| wordBoundary = isStartHandle() ? |
| layout.getLineStart(currLine) : layout.getLineEnd(currLine); |
| } |
| final int offsetThresholdToSnap = isStartHandle() |
| ? wordEnd - ((wordEnd - wordBoundary) / 2) |
| : wordStart + ((wordBoundary - wordStart) / 2); |
| if (isStartHandle() |
| && (offset <= offsetThresholdToSnap || currLine < mPrevLine)) { |
| // User is far enough into the word or on a different line so we expand by |
| // word. |
| offset = wordStart; |
| } else if (!isStartHandle() |
| && (offset >= offsetThresholdToSnap || currLine > mPrevLine)) { |
| // User is far enough into the word or on a different line so we expand by |
| // word. |
| offset = wordEnd; |
| } else { |
| offset = mPreviousOffset; |
| } |
| } |
| if ((isStartHandle() && offset < initialOffset) |
| || (!isStartHandle() && offset > initialOffset)) { |
| final float adjustedX = getHorizontal(layout, offset); |
| mTouchWordDelta = |
| mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; |
| } else { |
| mTouchWordDelta = 0.0f; |
| } |
| positionCursor = true; |
| } else { |
| final int adjustedOffset = |
| getOffsetAtCoordinate(layout, currLine, x - mTouchWordDelta); |
| final boolean shrinking = isStartHandle() |
| ? adjustedOffset > mPreviousOffset || currLine > mPrevLine |
| : adjustedOffset < mPreviousOffset || currLine < mPrevLine; |
| if (shrinking) { |
| // User is shrinking the selection. |
| if (currLine != mPrevLine) { |
| // We're on a different line, so we'll snap to word boundaries. |
| offset = isStartHandle() ? wordStart : wordEnd; |
| if ((isStartHandle() && offset < initialOffset) |
| || (!isStartHandle() && offset > initialOffset)) { |
| final float adjustedX = getHorizontal(layout, offset); |
| mTouchWordDelta = |
| mTextView.convertToLocalHorizontalCoordinate(x) - adjustedX; |
| } else { |
| mTouchWordDelta = 0.0f; |
| } |
| } else { |
| offset = adjustedOffset; |
| } |
| positionCursor = true; |
| } else if ((isStartHandle() && adjustedOffset < mPreviousOffset) |
| || (!isStartHandle() && adjustedOffset > mPreviousOffset)) { |
| // Handle has jumped to the word boundary, and the user is moving |
| // their finger towards the handle, the delta should be updated. |
| mTouchWordDelta = mTextView.convertToLocalHorizontalCoordinate(x) - |
| getHorizontal(layout, mPreviousOffset); |
| } |
| } |
| |
| if (positionCursor) { |
| mPreviousLineTouched = currLine; |
| positionAndAdjustForCrossingHandles(offset); |
| } |
| mPrevX = x; |
| } |
| |
| @Override |
| protected void positionAtCursorOffset(int offset, boolean forceUpdatePosition) { |
| super.positionAtCursorOffset(offset, forceUpdatePosition); |
| mInWord = (offset != -1) && !getWordIteratorWithText().isBoundary(offset); |
| } |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent event) { |
| boolean superResult = super.onTouchEvent(event); |
| if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { |
| // Reset the touch word offset and x value when the user |
| // re-engages the handle. |
| mTouchWordDelta = 0.0f; |
| mPrevX = UNSET_X_VALUE; |
| } |
| return superResult; |
| } |
| |
| private void positionAndAdjustForCrossingHandles(int offset) { |
| final int anotherHandleOffset = |
| isStartHandle() ? mTextView.getSelectionEnd() : mTextView.getSelectionStart(); |
| if ((isStartHandle() && offset >= anotherHandleOffset) |
| || (!isStartHandle() && offset <= anotherHandleOffset)) { |
| mTouchWordDelta = 0.0f; |
| final Layout layout = mTextView.getLayout(); |
| if (layout != null && offset != anotherHandleOffset) { |
| final float horiz = getHorizontal(layout, offset); |
| final float anotherHandleHoriz = getHorizontal(layout, anotherHandleOffset, |
| !isStartHandle()); |
| final float currentHoriz = getHorizontal(layout, mPreviousOffset); |
| if (currentHoriz < anotherHandleHoriz && horiz < anotherHandleHoriz |
| || currentHoriz > anotherHandleHoriz && horiz > anotherHandleHoriz) { |
| // This handle passes another one as it crossed a direction boundary. |
| // Don't minimize the selection, but keep the handle at the run boundary. |
| final int currentOffset = getCurrentCursorOffset(); |
| final int offsetToGetRunRange = isStartHandle() ? |
| currentOffset : Math.max(currentOffset - 1, 0); |
| final long range = layout.getRunRange(offsetToGetRunRange); |
| if (isStartHandle()) { |
| offset = TextUtils.unpackRangeStartFromLong(range); |
| } else { |
| offset = TextUtils.unpackRangeEndFromLong(range); |
| } |
| positionAtCursorOffset(offset, false); |
| return; |
| } |
| } |
| // Handles can not cross and selection is at least one character. |
| offset = getNextCursorOffset(anotherHandleOffset, !isStartHandle()); |
| } |
| positionAtCursorOffset(offset, false); |
| } |
| |
| private boolean positionNearEdgeOfScrollingView(float x, boolean atRtl) { |
| mTextView.getLocationOnScreen(mTextViewLocation); |
| boolean nearEdge; |
| if (atRtl == isStartHandle()) { |
| int rightEdge = mTextViewLocation[0] + mTextView.getWidth() |
| - mTextView.getPaddingRight(); |
| nearEdge = x > rightEdge - mTextViewEdgeSlop; |
| } else { |
| int leftEdge = mTextViewLocation[0] + mTextView.getPaddingLeft(); |
| nearEdge = x < leftEdge + mTextViewEdgeSlop; |
| } |
| return nearEdge; |
| } |
| |
| @Override |
| protected boolean isAtRtlRun(@NonNull Layout layout, int offset) { |
| final int offsetToCheck = isStartHandle() ? offset : Math.max(offset - 1, 0); |
| return layout.isRtlCharAt(offsetToCheck); |
| } |
| |
| @Override |
| public float getHorizontal(@NonNull Layout layout, int offset) { |
| return getHorizontal(layout, offset, isStartHandle()); |
| } |
| |
| private float getHorizontal(@NonNull Layout layout, int offset, boolean startHandle) { |
| final int line = layout.getLineForOffset(offset); |
| final int offsetToCheck = startHandle ? offset : Math.max(offset - 1, 0); |
| final boolean isRtlChar = layout.isRtlCharAt(offsetToCheck); |
| final boolean isRtlParagraph = layout.getParagraphDirection(line) == -1; |
| return (isRtlChar == isRtlParagraph) ? |
| layout.getPrimaryHorizontal(offset) : layout.getSecondaryHorizontal(offset); |
| } |
| |
| @Override |
| protected int getOffsetAtCoordinate(@NonNull Layout layout, int line, float x) { |
| final float localX = mTextView.convertToLocalHorizontalCoordinate(x); |
| final int primaryOffset = layout.getOffsetForHorizontal(line, localX, true); |
| if (!layout.isLevelBoundary(primaryOffset)) { |
| return primaryOffset; |
| } |
| final int secondaryOffset = layout.getOffsetForHorizontal(line, localX, false); |
| final int currentOffset = getCurrentCursorOffset(); |
| final int primaryDiff = Math.abs(primaryOffset - currentOffset); |
| final int secondaryDiff = Math.abs(secondaryOffset - currentOffset); |
| if (primaryDiff < secondaryDiff) { |
| return primaryOffset; |
| } else if (primaryDiff > secondaryDiff) { |
| return secondaryOffset; |
| } else { |
| final int offsetToCheck = isStartHandle() ? |
| currentOffset : Math.max(currentOffset - 1, 0); |
| final boolean isRtlChar = layout.isRtlCharAt(offsetToCheck); |
| final boolean isRtlParagraph = layout.getParagraphDirection(line) == -1; |
| return isRtlChar == isRtlParagraph ? primaryOffset : secondaryOffset; |
| } |
| } |
| } |
| |
| private int getCurrentLineAdjustedForSlop(Layout layout, int prevLine, float y) { |
| final int trueLine = mTextView.getLineAtCoordinate(y); |
| if (layout == null || prevLine > layout.getLineCount() |
| || layout.getLineCount() <= 0 || prevLine < 0) { |
| // Invalid parameters, just return whatever line is at y. |
| return trueLine; |
| } |
| |
| if (Math.abs(trueLine - prevLine) >= 2) { |
| // Only stick to lines if we're within a line of the previous selection. |
| return trueLine; |
| } |
| |
| final float verticalOffset = mTextView.viewportToContentVerticalOffset(); |
| final int lineCount = layout.getLineCount(); |
| final float slop = mTextView.getLineHeight() * LINE_SLOP_MULTIPLIER_FOR_HANDLEVIEWS; |
| |
| final float firstLineTop = layout.getLineTop(0) + verticalOffset; |
| final float prevLineTop = layout.getLineTop(prevLine) + verticalOffset; |
| final float yTopBound = Math.max(prevLineTop - slop, firstLineTop + slop); |
| |
| final float lastLineBottom = layout.getLineBottom(lineCount - 1) + verticalOffset; |
| final float prevLineBottom = layout.getLineBottom(prevLine) + verticalOffset; |
| final float yBottomBound = Math.min(prevLineBottom + slop, lastLineBottom - slop); |
| |
| // Determine if we've moved lines based on y position and previous line. |
| int currLine; |
| if (y <= yTopBound) { |
| currLine = Math.max(prevLine - 1, 0); |
| } else if (y >= yBottomBound) { |
| currLine = Math.min(prevLine + 1, lineCount - 1); |
| } else { |
| currLine = prevLine; |
| } |
| return currLine; |
| } |
| |
| /** |
| * A CursorController instance can be used to control a cursor in the text. |
| */ |
| private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { |
| /** |
| * Makes the cursor controller visible on screen. |
| * See also {@link #hide()}. |
| */ |
| public void show(); |
| |
| /** |
| * Hide the cursor controller from screen. |
| * See also {@link #show()}. |
| */ |
| public void hide(); |
| |
| /** |
| * Called when the view is detached from window. Perform house keeping task, such as |
| * stopping Runnable thread that would otherwise keep a reference on the context, thus |
| * preventing the activity from being recycled. |
| */ |
| public void onDetached(); |
| |
| public boolean isCursorBeingModified(); |
| |
| public boolean isActive(); |
| } |
| |
| private class InsertionPointCursorController implements CursorController { |
| private InsertionHandleView mHandle; |
| |
| public void show() { |
| getHandle().show(); |
| |
| if (mSelectionModifierCursorController != null) { |
| mSelectionModifierCursorController.hide(); |
| } |
| } |
| |
| public void hide() { |
| if (mHandle != null) { |
| mHandle.hide(); |
| } |
| } |
| |
| public void onTouchModeChanged(boolean isInTouchMode) { |
| if (!isInTouchMode) { |
| hide(); |
| } |
| } |
| |
| private InsertionHandleView getHandle() { |
| if (mSelectHandleCenter == null) { |
| mSelectHandleCenter = mTextView.getContext().getDrawable( |
| mTextView.mTextSelectHandleRes); |
| } |
| if (mHandle == null) { |
| mHandle = new InsertionHandleView(mSelectHandleCenter); |
| } |
| return mHandle; |
| } |
| |
| @Override |
| public void onDetached() { |
| final ViewTreeObserver observer = mTextView.getViewTreeObserver(); |
| observer.removeOnTouchModeChangeListener(this); |
| |
| if (mHandle != null) mHandle.onDetached(); |
| } |
| |
| @Override |
| public boolean isCursorBeingModified() { |
| return mHandle != null && mHandle.isDragging(); |
| } |
| |
| @Override |
| public boolean isActive() { |
| return mHandle != null && mHandle.isShowing(); |
| } |
| |
| public void invalidateHandle() { |
| if (mHandle != null) { |
| mHandle.invalidate(); |
| } |
| } |
| } |
| |
| class SelectionModifierCursorController implements CursorController { |
| // The cursor controller handles, lazily created when shown. |
| private SelectionHandleView mStartHandle; |
| private SelectionHandleView mEndHandle; |
| // The offsets of that last touch down event. Remembered to start selection there. |
| private int mMinTouchOffset, mMaxTouchOffset; |
| |
| private float mDownPositionX, mDownPositionY; |
| private boolean mGestureStayedInTapRegion; |
| |
| // Where the user first starts the drag motion. |
| private int mStartOffset = -1; |
| |
| private boolean mHaventMovedEnoughToStartDrag; |
| // The line that a selection happened most recently with the drag accelerator. |
| private int mLineSelectionIsOn = -1; |
| // Whether the drag accelerator has selected past the initial line. |
| private boolean mSwitchedLines = false; |
| |
| // Indicates the drag accelerator mode that the user is currently using. |
| private int mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; |
| // Drag accelerator is inactive. |
| private static final int DRAG_ACCELERATOR_MODE_INACTIVE = 0; |
| // Character based selection by dragging. Only for mouse. |
| private static final int DRAG_ACCELERATOR_MODE_CHARACTER = 1; |
| // Word based selection by dragging. Enabled after long pressing or double tapping. |
| private static final int DRAG_ACCELERATOR_MODE_WORD = 2; |
| // Paragraph based selection by dragging. Enabled after mouse triple click. |
| private static final int DRAG_ACCELERATOR_MODE_PARAGRAPH = 3; |
| |
| SelectionModifierCursorController() { |
| resetTouchOffsets(); |
| } |
| |
| public void show() { |
| if (mTextView.isInBatchEditMode()) { |
| return; |
| } |
| initDrawables(); |
| initHandles(); |
| } |
| |
| private void initDrawables() { |
| if (mSelectHandleLeft == null) { |
| mSelectHandleLeft = mTextView.getContext().getDrawable( |
| mTextView.mTextSelectHandleLeftRes); |
| } |
| if (mSelectHandleRight == null) { |
| mSelectHandleRight = mTextView.getContext().getDrawable( |
| mTextView.mTextSelectHandleRightRes); |
| } |
| } |
| |
| private void initHandles() { |
| // Lazy object creation has to be done before updatePosition() is called. |
| if (mStartHandle == null) { |
| mStartHandle = new SelectionHandleView(mSelectHandleLeft, mSelectHandleRight, |
| com.android.internal.R.id.selection_start_handle, |
| HANDLE_TYPE_SELECTION_START); |
| } |
| if (mEndHandle == null) { |
| mEndHandle = new SelectionHandleView(mSelectHandleRight, mSelectHandleLeft, |
| com.android.internal.R.id.selection_end_handle, |
| HANDLE_TYPE_SELECTION_END); |
| } |
| |
| mStartHandle.show(); |
| mEndHandle.show(); |
| |
| hideInsertionPointCursorController(); |
| } |
| |
| public void hide() { |
| if (mStartHandle != null) mStartHandle.hide(); |
| if (mEndHandle != null) mEndHandle.hide(); |
| } |
| |
| public void enterDrag(int dragAcceleratorMode) { |
| // Just need to init the handles / hide insertion cursor. |
| show(); |
| mDragAcceleratorMode = dragAcceleratorMode; |
| // Start location of selection. |
| mStartOffset = mTextView.getOffsetForPosition(mLastDownPositionX, |
| mLastDownPositionY); |
| mLineSelectionIsOn = mTextView.getLineAtCoordinate(mLastDownPositionY); |
| // Don't show the handles until user has lifted finger. |
| hide(); |
| |
| // This stops scrolling parents from intercepting the touch event, allowing |
| // the user to continue dragging across the screen to select text; TextView will |
| // scroll as necessary. |
| mTextView.getParent().requestDisallowInterceptTouchEvent(true); |
| mTextView.cancelLongPress(); |
| } |
| |
| public void onTouchEvent(MotionEvent event) { |
| // This is done even when the View does not have focus, so that long presses can start |
| // selection and tap can move cursor from this tap position. |
| final float eventX = event.getX(); |
| final float eventY = event.getY(); |
| final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); |
| switch (event.getActionMasked()) { |
| case MotionEvent.ACTION_DOWN: |
| if (extractedTextModeWillBeStarted()) { |
| // Prevent duplicating the selection handles until the mode starts. |
| hide(); |
| } else { |
| // Remember finger down position, to be able to start selection from there. |
| mMinTouchOffset = mMaxTouchOffset = mTextView.getOffsetForPosition( |
| eventX, eventY); |
| |
| // Double tap detection |
| if (mGestureStayedInTapRegion) { |
| if (mTapState == TAP_STATE_DOUBLE_TAP |
| || mTapState == TAP_STATE_TRIPLE_CLICK) { |
| final float deltaX = eventX - mDownPositionX; |
| final float deltaY = eventY - mDownPositionY; |
| final float distanceSquared = deltaX * deltaX + deltaY * deltaY; |
| |
| ViewConfiguration viewConfiguration = ViewConfiguration.get( |
| mTextView.getContext()); |
| int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop(); |
| boolean stayedInArea = |
| distanceSquared < doubleTapSlop * doubleTapSlop; |
| |
| if (stayedInArea && (isMouse || isPositionOnText(eventX, eventY))) { |
| if (mTapState == TAP_STATE_DOUBLE_TAP) { |
| selectCurrentWordAndStartDrag(); |
| } else if (mTapState == TAP_STATE_TRIPLE_CLICK) { |
| selectCurrentParagraphAndStartDrag(); |
| } |
| mDiscardNextActionUp = true; |
| } |
| } |
| } |
| |
| mDownPositionX = eventX; |
| mDownPositionY = eventY; |
| mGestureStayedInTapRegion = true; |
| mHaventMovedEnoughToStartDrag = true; |
| } |
| break; |
| |
| case MotionEvent.ACTION_POINTER_DOWN: |
| case MotionEvent.ACTION_POINTER_UP: |
| // Handle multi-point gestures. Keep min and max offset positions. |
| // Only activated for devices that correctly handle multi-touch. |
| if (mTextView.getContext().getPackageManager().hasSystemFeature( |
| PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { |
| updateMinAndMaxOffsets(event); |
| } |
| break; |
| |
| case MotionEvent.ACTION_MOVE: |
| final ViewConfiguration viewConfig = ViewConfiguration.get( |
| mTextView.getContext()); |
| final int touchSlop = viewConfig.getScaledTouchSlop(); |
| |
| if (mGestureStayedInTapRegion || mHaventMovedEnoughToStartDrag) { |
| final float deltaX = eventX - mDownPositionX; |
| final float deltaY = eventY - mDownPositionY; |
| final float distanceSquared = deltaX * deltaX + deltaY * deltaY; |
| |
| if (mGestureStayedInTapRegion) { |
| int doubleTapTouchSlop = viewConfig.getScaledDoubleTapTouchSlop(); |
| mGestureStayedInTapRegion = |
| distanceSquared <= doubleTapTouchSlop * doubleTapTouchSlop; |
| } |
| if (mHaventMovedEnoughToStartDrag) { |
| // We don't start dragging until the user has moved enough. |
| mHaventMovedEnoughToStartDrag = |
| distanceSquared <= touchSlop * touchSlop; |
| } |
| } |
| |
| if (isMouse && !isDragAcceleratorActive()) { |
| final int offset = mTextView.getOffsetForPosition(eventX, eventY); |
| if (mTextView.hasSelection() |
| && (!mHaventMovedEnoughToStartDrag || mStartOffset != offset) |
| && offset >= mTextView.getSelectionStart() |
| && offset <= mTextView.getSelectionEnd()) { |
| startDragAndDrop(); |
| break; |
| } |
| |
| if (mStartOffset != offset) { |
| // Start character based drag accelerator. |
| stopTextActionMode(); |
| enterDrag(DRAG_ACCELERATOR_MODE_CHARACTER); |
| mDiscardNextActionUp = true; |
| mHaventMovedEnoughToStartDrag = false; |
| } |
| } |
| |
| if (mStartHandle != null && mStartHandle.isShowing()) { |
| // Don't do the drag if the handles are showing already. |
| break; |
| } |
| |
| updateSelection(event); |
| break; |
| |
| case MotionEvent.ACTION_UP: |
| if (!isDragAcceleratorActive()) { |
| break; |
| } |
| updateSelection(event); |
| |
| // No longer dragging to select text, let the parent intercept events. |
| mTextView.getParent().requestDisallowInterceptTouchEvent(false); |
| |
| // No longer the first dragging motion, reset. |
| resetDragAcceleratorState(); |
| |
| if (mTextView.hasSelection()) { |
| startSelectionActionMode(); |
| } |
| break; |
| } |
| } |
| |
| private void updateSelection(MotionEvent event) { |
| if (mTextView.getLayout() != null) { |
| switch (mDragAcceleratorMode) { |
| case DRAG_ACCELERATOR_MODE_CHARACTER: |
| updateCharacterBasedSelection(event); |
| break; |
| case DRAG_ACCELERATOR_MODE_WORD: |
| updateWordBasedSelection(event); |
| break; |
| case DRAG_ACCELERATOR_MODE_PARAGRAPH: |
| updateParagraphBasedSelection(event); |
| break; |
| } |
| } |
| } |
| |
| /** |
| * If the TextView allows text selection, selects the current paragraph and starts a drag. |
| * |
| * @return true if the drag was started. |
| */ |
| private boolean selectCurrentParagraphAndStartDrag() { |
| if (mInsertionActionModeRunnable != null) { |
| mTextView.removeCallbacks(mInsertionActionModeRunnable); |
| } |
| stopTextActionMode(); |
| if (!selectCurrentParagraph()) { |
| return false; |
| } |
| enterDrag(SelectionModifierCursorController.DRAG_ACCELERATOR_MODE_PARAGRAPH); |
| return true; |
| } |
| |
| private void updateCharacterBasedSelection(MotionEvent event) { |
| final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); |
| Selection.setSelection((Spannable) mTextView.getText(), mStartOffset, offset); |
| } |
| |
| private void updateWordBasedSelection(MotionEvent event) { |
| if (mHaventMovedEnoughToStartDrag) { |
| return; |
| } |
| final boolean isMouse = event.isFromSource(InputDevice.SOURCE_MOUSE); |
| final ViewConfiguration viewConfig = ViewConfiguration.get( |
| mTextView.getContext()); |
| final float eventX = event.getX(); |
| final float eventY = event.getY(); |
| final int currLine; |
| if (isMouse) { |
| // No need to offset the y coordinate for mouse input. |
| currLine = mTextView.getLineAtCoordinate(eventY); |
| } else { |
| float y = eventY; |
| if (mSwitchedLines) { |
| // Offset the finger by the same vertical offset as the handles. |
| // This improves visibility of the content being selected by |
| // shifting the finger below the content, this is applied once |
| // the user has switched lines. |
| final int touchSlop = viewConfig.getScaledTouchSlop(); |
| final float fingerOffset = (mStartHandle != null) |
| ? mStartHandle.getIdealVerticalOffset() |
| : touchSlop; |
| y = eventY - fingerOffset; |
| } |
| |
| currLine = getCurrentLineAdjustedForSlop(mTextView.getLayout(), mLineSelectionIsOn, |
| y); |
| if (!mSwitchedLines && currLine != mLineSelectionIsOn) { |
| // Break early here, we want to offset the finger position from |
| // the selection highlight, once the user moved their finger |
| // to a different line we should apply the offset and *not* switch |
| // lines until recomputing the position with the finger offset. |
| mSwitchedLines = true; |
| return; |
| } |
| } |
| |
| int startOffset; |
| int offset = mTextView.getOffsetAtCoordinate(currLine, eventX); |
| // Snap to word boundaries. |
| if (mStartOffset < offset) { |
| // Expanding with end handle. |
| offset = getWordEnd(offset); |
| startOffset = getWordStart(mStartOffset); |
| } else { |
| // Expanding with start handle. |
| offset = getWordStart(offset); |
| startOffset = getWordEnd(mStartOffset); |
| } |
| mLineSelectionIsOn = currLine; |
| Selection.setSelection((Spannable) mTextView.getText(), |
| startOffset, offset); |
| } |
| |
| private void updateParagraphBasedSelection(MotionEvent event) { |
| final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); |
| |
| final int start = Math.min(offset, mStartOffset); |
| final int end = Math.max(offset, mStartOffset); |
| final long paragraphsRange = getParagraphsRange(start, end); |
| final int selectionStart = TextUtils.unpackRangeStartFromLong(paragraphsRange); |
| final int selectionEnd = TextUtils.unpackRangeEndFromLong(paragraphsRange); |
| Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); |
| } |
| |
| /** |
| * @param event |
| */ |
| private void updateMinAndMaxOffsets(MotionEvent event) { |
| int pointerCount = event.getPointerCount(); |
| for (int index = 0; index < pointerCount; index++) { |
| int offset = mTextView.getOffsetForPosition(event.getX(index), event.getY(index)); |
| if (offset < mMinTouchOffset) mMinTouchOffset = offset; |
| if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; |
| } |
| } |
| |
| public int getMinTouchOffset() { |
| return mMinTouchOffset; |
| } |
| |
| public int getMaxTouchOffset() { |
| return mMaxTouchOffset; |
| } |
| |
| public void resetTouchOffsets() { |
| mMinTouchOffset = mMaxTouchOffset = -1; |
| resetDragAcceleratorState(); |
| } |
| |
| private void resetDragAcceleratorState() { |
| mStartOffset = -1; |
| mDragAcceleratorMode = DRAG_ACCELERATOR_MODE_INACTIVE; |
| mSwitchedLines = false; |
| final int selectionStart = mTextView.getSelectionStart(); |
| final int selectionEnd = mTextView.getSelectionEnd(); |
| if (selectionStart > selectionEnd) { |
| Selection.setSelection((Spannable) mTextView.getText(), |
| selectionEnd, selectionStart); |
| } |
| } |
| |
| /** |
| * @return true iff this controller is currently used to move the selection start. |
| */ |
| public boolean isSelectionStartDragged() { |
| return mStartHandle != null && mStartHandle.isDragging(); |
| } |
| |
| @Override |
| public boolean isCursorBeingModified() { |
| return isDragAcceleratorActive() || isSelectionStartDragged() |
| || (mEndHandle != null && mEndHandle.isDragging()); |
| } |
| |
| /** |
| * @return true if the user is selecting text using the drag accelerator. |
| */ |
| public boolean isDragAcceleratorActive() { |
| return mDragAcceleratorMode != DRAG_ACCELERATOR_MODE_INACTIVE; |
| } |
| |
| public void onTouchModeChanged(boolean isInTouchMode) { |
| if (!isInTouchMode) { |
| hide(); |
| } |
| } |
| |
| @Override |
| public void onDetached() { |
| final ViewTreeObserver observer = mTextView.getViewTreeObserver(); |
| observer.removeOnTouchModeChangeListener(this); |
| |
| if (mStartHandle != null) mStartHandle.onDetached(); |
| if (mEndHandle != null) mEndHandle.onDetached(); |
| } |
| |
| @Override |
| public boolean isActive() { |
| return mStartHandle != null && mStartHandle.isShowing(); |
| } |
| |
| public void invalidateHandles() { |
| if (mStartHandle != null) { |
| mStartHandle.invalidate(); |
| } |
| if (mEndHandle != null) { |
| mEndHandle.invalidate(); |
| } |
| } |
| } |
| |
| private class CorrectionHighlighter { |
| private final Path mPath = new Path(); |
| private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| private int mStart, mEnd; |
| private long mFadingStartTime; |
| private RectF mTempRectF; |
| private final static int FADE_OUT_DURATION = 400; |
| |
| public CorrectionHighlighter() { |
| mPaint.setCompatibilityScaling(mTextView.getResources().getCompatibilityInfo(). |
| applicationScale); |
| mPaint.setStyle(Paint.Style.FILL); |
| } |
| |
| public void highlight(CorrectionInfo info) { |
| mStart = info.getOffset(); |
| mEnd = mStart + info.getNewText().length(); |
| mFadingStartTime = SystemClock.uptimeMillis(); |
| |
| if (mStart < 0 || mEnd < 0) { |
| stopAnimation(); |
| } |
| } |
| |
| public void draw(Canvas canvas, int cursorOffsetVertical) { |
| if (updatePath() && updatePaint()) { |
| if (cursorOffsetVertical != 0) { |
| canvas.translate(0, cursorOffsetVertical); |
| } |
| |
| canvas.drawPath(mPath, mPaint); |
| |
| if (cursorOffsetVertical != 0) { |
| canvas.translate(0, -cursorOffsetVertical); |
| } |
| invalidate(true); // TODO invalidate cursor region only |
| } else { |
| stopAnimation(); |
| invalidate(false); // TODO invalidate cursor region only |
| } |
| } |
| |
| private boolean updatePaint() { |
| final long duration = SystemClock.uptimeMillis() - mFadingStartTime; |
| if (duration > FADE_OUT_DURATION) return false; |
| |
| final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; |
| final int highlightColorAlpha = Color.alpha(mTextView.mHighlightColor); |
| final int color = (mTextView.mHighlightColor & 0x00FFFFFF) + |
| ((int) (highlightColorAlpha * coef) << 24); |
| mPaint.setColor(color); |
| return true; |
| } |
| |
| private boolean updatePath() { |
| final Layout layout = mTextView.getLayout(); |
| if (layout == null) return false; |
| |
| // Update in case text is edited while the animation is run |
| final int length = mTextView.getText().length(); |
| int start = Math.min(length, mStart); |
| int end = Math.min(length, mEnd); |
| |
| mPath.reset(); |
| layout.getSelectionPath(start, end, mPath); |
| return true; |
| } |
| |
| private void invalidate(boolean delayed) { |
| if (mTextView.getLayout() == null) return; |
| |
| if (mTempRectF == null) mTempRectF = new RectF(); |
| mPath.computeBounds(mTempRectF, false); |
| |
| int left = mTextView.getCompoundPaddingLeft(); |
| int top = mTextView.getExtendedPaddingTop() + mTextView.getVerticalOffset(true); |
| |
| if (delayed) { |
| mTextView.postInvalidateOnAnimation( |
| left + (int) mTempRectF.left, top + (int) mTempRectF.top, |
| left + (int) mTempRectF.right, top + (int) mTempRectF.bottom); |
| } else { |
| mTextView.postInvalidate((int) mTempRectF.left, (int) mTempRectF.top, |
| (int) mTempRectF.right, (int) mTempRectF.bottom); |
| } |
| } |
| |
| private void stopAnimation() { |
| Editor.this.mCorrectionHighlighter = null; |
| } |
| } |
| |
| private static class ErrorPopup extends PopupWindow { |
| private boolean mAbove = false; |
| private final TextView mView; |
| private int mPopupInlineErrorBackgroundId = 0; |
| private int mPopupInlineErrorAboveBackgroundId = 0; |
| |
| ErrorPopup(TextView v, int width, int height) { |
| super(v, width, height); |
| mView = v; |
| // Make sure the TextView has a background set as it will be used the first time it is |
| // shown and positioned. Initialized with below background, which should have |
| // dimensions identical to the above version for this to work (and is more likely). |
| mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, |
| com.android.internal.R.styleable.Theme_errorMessageBackground); |
| mView.setBackgroundResource(mPopupInlineErrorBackgroundId); |
| } |
| |
| void fixDirection(boolean above) { |
| mAbove = above; |
| |
| if (above) { |
| mPopupInlineErrorAboveBackgroundId = |
| getResourceId(mPopupInlineErrorAboveBackgroundId, |
| com.android.internal.R.styleable.Theme_errorMessageAboveBackground); |
| } else { |
| mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, |
| com.android.internal.R.styleable.Theme_errorMessageBackground); |
| } |
| |
| mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId : |
| mPopupInlineErrorBackgroundId); |
| } |
| |
| private int getResourceId(int currentId, int index) { |
| if (currentId == 0) { |
| TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( |
| R.styleable.Theme); |
| currentId = styledAttributes.getResourceId(index, 0); |
| styledAttributes.recycle(); |
| } |
| return currentId; |
| } |
| |
| @Override |
| public void update(int x, int y, int w, int h, boolean force) { |
| super.update(x, y, w, h, force); |
| |
| boolean above = isAboveAnchor(); |
| if (above != mAbove) { |
| fixDirection(above); |
| } |
| } |
| } |
| |
| static class InputContentType { |
| int imeOptions = EditorInfo.IME_NULL; |
| String privateImeOptions; |
| CharSequence imeActionLabel; |
| int imeActionId; |
| Bundle extras; |
| OnEditorActionListener onEditorActionListener; |
| boolean enterDown; |
| LocaleList imeHintLocales; |
| } |
| |
| static class InputMethodState { |
| ExtractedTextRequest mExtractedTextRequest; |
| final ExtractedText mExtractedText = new ExtractedText(); |
| int mBatchEditNesting; |
| boolean mCursorChanged; |
| boolean mSelectionModeChanged; |
| boolean mContentChanged; |
| int mChangedStart, mChangedEnd, mChangedDelta; |
| } |
| |
| /** |
| * @return True iff (start, end) is a valid range within the text. |
| */ |
| private static boolean isValidRange(CharSequence text, int start, int end) { |
| return 0 <= start && start <= end && end <= text.length(); |
| } |
| |
| @VisibleForTesting |
| public SuggestionsPopupWindow getSuggestionsPopupWindowForTesting() { |
| return mSuggestionsPopupWindow; |
| } |
| |
| /** |
| * An InputFilter that monitors text input to maintain undo history. It does not modify the |
| * text being typed (and hence always returns null from the filter() method). |
| */ |
| public static class UndoInputFilter implements InputFilter { |
| private final Editor mEditor; |
| |
| // Whether the current filter pass is directly caused by an end-user text edit. |
| private boolean mIsUserEdit; |
| |
| // Whether the text field is handling an IME composition. Must be parceled in case the user |
| // rotates the screen during composition. |
| private boolean mHasComposition; |
| |
| // Whether to merge events into one operation. |
| private boolean mForceMerge; |
| |
| public UndoInputFilter(Editor editor) { |
| mEditor = editor; |
| } |
| |
| public void saveInstanceState(Parcel parcel) { |
| parcel.writeInt(mIsUserEdit ? 1 : 0); |
| parcel.writeInt(mHasComposition ? 1 : 0); |
| } |
| |
| public void restoreInstanceState(Parcel parcel) { |
| mIsUserEdit = parcel.readInt() != 0; |
| mHasComposition = parcel.readInt() != 0; |
| } |
| |
| public void setForceMerge(boolean forceMerge) { |
| mForceMerge = forceMerge; |
| } |
| |
| /** |
| * Signals that a user-triggered edit is starting. |
| */ |
| public void beginBatchEdit() { |
| if (DEBUG_UNDO) Log.d(TAG, "beginBatchEdit"); |
| mIsUserEdit = true; |
| } |
| |
| public void endBatchEdit() { |
| if (DEBUG_UNDO) Log.d(TAG, "endBatchEdit"); |
| mIsUserEdit = false; |
| } |
| |
| @Override |
| public CharSequence filter(CharSequence source, int start, int end, |
| Spanned dest, int dstart, int dend) { |
| if (DEBUG_UNDO) { |
| Log.d(TAG, "filter: source=" + source + " (" + start + "-" + end + ") " + |
| "dest=" + dest + " (" + dstart + "-" + dend + ")"); |
| } |
| |
| // Check to see if this edit should be tracked for undo. |
| if (!canUndoEdit(source, start, end, dest, dstart, dend)) { |
| return null; |
| } |
| |
| // Check for and handle IME composition edits. |
| if (handleCompositionEdit(source, start, end, dstart)) { |
| return null; |
| } |
| |
| // Handle keyboard edits. |
| handleKeyboardEdit(source, start, end, dest, dstart, dend); |
| return null; |
| } |
| |
| /** |
| * Returns true iff the edit was handled, either because it should be ignored or because |
| * this function created an undo operation for it. |
| */ |
| private boolean handleCompositionEdit(CharSequence source, int start, int end, int dstart) { |
| // Ignore edits while the user is composing. |
| if (isComposition(source)) { |
| mHasComposition = true; |
| return true; |
| } |
| final boolean hadComposition = mHasComposition; |
| mHasComposition = false; |
| |
| // Check for the transition out of the composing state. |
| if (hadComposition) { |
| // If there was no text the user canceled composition. Ignore the edit. |
| if (start == end) { |
| return true; |
| } |
| |
| // Otherwise the user inserted the composition. |
| String newText = TextUtils.substring(source, start, end); |
| EditOperation edit = new EditOperation(mEditor, "", dstart, newText); |
| recordEdit(edit, mForceMerge); |
| return true; |
| } |
| |
| // This was neither a composition event nor a transition out of composing. |
| return false; |
| } |
| |
| private void handleKeyboardEdit(CharSequence source, int start, int end, |
| Spanned dest, int dstart, int dend) { |
| // An application may install a TextWatcher to provide additional modifications after |
| // the initial input filters run (e.g. a credit card formatter that adds spaces to a |
| // string). This results in multiple filter() calls for what the user considers to be |
| // a single operation. Always undo the whole set of changes in one step. |
| final boolean forceMerge = mForceMerge || isInTextWatcher(); |
| |
| // Build a new operation with all the information from this edit. |
| String newText = TextUtils.substring(source, start, end); |
| String oldText = TextUtils.substring(dest, dstart, dend); |
| EditOperation edit = new EditOperation(mEditor, oldText, dstart, newText); |
| recordEdit(edit, forceMerge); |
| } |
| |
| /** |
| * Fetches the last undo operation and checks to see if a new edit should be merged into it. |
| * If forceMerge is true then the new edit is always merged. |
| */ |
| private void recordEdit(EditOperation edit, boolean forceMerge) { |
| // Fetch the last edit operation and attempt to merge in the new edit. |
| final UndoManager um = mEditor.mUndoManager; |
| um.beginUpdate("Edit text"); |
| EditOperation lastEdit = um.getLastOperation( |
| EditOperation.class, mEditor.mUndoOwner, UndoManager.MERGE_MODE_UNIQUE); |
| if (lastEdit == null) { |
| // Add this as the first edit. |
| if (DEBUG_UNDO) Log.d(TAG, "filter: adding first op " + edit); |
| um.addOperation(edit, UndoManager.MERGE_MODE_NONE); |
| } else if (forceMerge) { |
| // Forced merges take priority because they could be the result of a non-user-edit |
| // change and this case should not create a new undo operation. |
| if (DEBUG_UNDO) Log.d(TAG, "filter: force merge " + edit); |
| lastEdit.forceMergeWith(edit); |
| } else if (!mIsUserEdit) { |
| // An application directly modified the Editable outside of a text edit. Treat this |
| // as a new change and don't attempt to merge. |
| if (DEBUG_UNDO) Log.d(TAG, "non-user edit, new op " + edit); |
| um.commitState(mEditor.mUndoOwner); |
| um.addOperation(edit, UndoManager.MERGE_MODE_NONE); |
| } else if (lastEdit.mergeWith(edit)) { |
| // Merge succeeded, nothing else to do. |
| if (DEBUG_UNDO) Log.d(TAG, "filter: merge succeeded, created " + lastEdit); |
| } else { |
| // Could not merge with the last edit, so commit the last edit and add this edit. |
| if (DEBUG_UNDO) Log.d(TAG, "filter: merge failed, adding " + edit); |
| um.commitState(mEditor.mUndoOwner); |
| um.addOperation(edit, UndoManager.MERGE_MODE_NONE); |
| } |
| um.endUpdate(); |
| } |
| |
| private boolean canUndoEdit(CharSequence source, int start, int end, |
| Spanned dest, int dstart, int dend) { |
| if (!mEditor.mAllowUndo) { |
| if (DEBUG_UNDO) Log.d(TAG, "filter: undo is disabled"); |
| return false; |
| } |
| |
| if (mEditor.mUndoManager.isInUndo()) { |
| if (DEBUG_UNDO) Log.d(TAG, "filter: skipping, currently performing undo/redo"); |
| return false; |
| } |
| |
| // Text filters run before input operations are applied. However, some input operations |
| // are invalid and will throw exceptions when applied. This is common in tests. Don't |
| // attempt to undo invalid operations. |
| if (!isValidRange(source, start, end) || !isValidRange(dest, dstart, dend)) { |
| if (DEBUG_UNDO) Log.d(TAG, "filter: invalid op"); |
| return false; |
| } |
| |
| // Earlier filters can rewrite input to be a no-op, for example due to a length limit |
| // on an input field. Skip no-op changes. |
| if (start == end && dstart == dend) { |
| if (DEBUG_UNDO) Log.d(TAG, "filter: skipping no-op"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| private boolean isComposition(CharSequence source) { |
| if (!(source instanceof Spannable)) { |
| return false; |
| } |
| // This is a composition edit if the source has a non-zero-length composing span. |
| Spannable text = (Spannable) source; |
| int composeBegin = EditableInputConnection.getComposingSpanStart(text); |
| int composeEnd = EditableInputConnection.getComposingSpanEnd(text); |
| return composeBegin < composeEnd; |
| } |
| |
| private boolean isInTextWatcher() { |
| CharSequence text = mEditor.mTextView.getText(); |
| return (text instanceof SpannableStringBuilder) |
| && ((SpannableStringBuilder) text).getTextWatcherDepth() > 0; |
| } |
| } |
| |
| /** |
| * An operation to undo a single "edit" to a text view. |
| */ |
| public static class EditOperation extends UndoOperation<Editor> { |
| private static final int TYPE_INSERT = 0; |
| private static final int TYPE_DELETE = 1; |
| private static final int TYPE_REPLACE = 2; |
| |
| private int mType; |
| private String mOldText; |
| private int mOldTextStart; |
| private String mNewText; |
| private int mNewTextStart; |
| |
| private int mOldCursorPos; |
| private int mNewCursorPos; |
| |
| /** |
| * Constructs an edit operation from a text input operation on editor that replaces the |
| * oldText starting at dstart with newText. |
| */ |
| public EditOperation(Editor editor, String oldText, int dstart, String newText) { |
| super(editor.mUndoOwner); |
| mOldText = oldText; |
| mNewText = newText; |
| |
| // Determine the type of the edit and store where it occurred. Avoid storing |
| // irrevelant data (e.g. mNewTextStart for a delete) because that makes the |
| // merging logic more complex (e.g. merging deletes could lead to mNewTextStart being |
| // outside the bounds of the final text). |
| if (mNewText.length() > 0 && mOldText.length() == 0) { |
| mType = TYPE_INSERT; |
| mNewTextStart = dstart; |
| } else if (mNewText.length() == 0 && mOldText.length() > 0) { |
| mType = TYPE_DELETE; |
| mOldTextStart = dstart; |
| } else { |
| mType = TYPE_REPLACE; |
| mOldTextStart = mNewTextStart = dstart; |
| } |
| |
| // Store cursor data. |
| mOldCursorPos = editor.mTextView.getSelectionStart(); |
| mNewCursorPos = dstart + mNewText.length(); |
| } |
| |
| public EditOperation(Parcel src, ClassLoader loader) { |
| super(src, loader); |
| mType = src.readInt(); |
| mOldText = src.readString(); |
| mOldTextStart = src.readInt(); |
| mNewText = src.readString(); |
| mNewTextStart = src.readInt(); |
| mOldCursorPos = src.readInt(); |
| mNewCursorPos = src.readInt(); |
| } |
| |
| @Override |
| public void writeToParcel(Parcel dest, int flags) { |
| dest.writeInt(mType); |
| dest.writeString(mOldText); |
| dest.writeInt(mOldTextStart); |
| dest.writeString(mNewText); |
| dest.writeInt(mNewTextStart); |
| dest.writeInt(mOldCursorPos); |
| dest.writeInt(mNewCursorPos); |
| } |
| |
| private int getNewTextEnd() { |
| return mNewTextStart + mNewText.length(); |
| } |
| |
| private int getOldTextEnd() { |
| return mOldTextStart + mOldText.length(); |
| } |
| |
| @Override |
| public void commit() { |
| } |
| |
| @Override |
| public void undo() { |
| if (DEBUG_UNDO) Log.d(TAG, "undo"); |
| // Remove the new text and insert the old. |
| Editor editor = getOwnerData(); |
| Editable text = (Editable) editor.mTextView.getText(); |
| modifyText(text, mNewTextStart, getNewTextEnd(), mOldText, mOldTextStart, |
| mOldCursorPos); |
| } |
| |
| @Override |
| public void redo() { |
| if (DEBUG_UNDO) Log.d(TAG, "redo"); |
| // Remove the old text and insert the new. |
| Editor editor = getOwnerData(); |
| Editable text = (Editable) editor.mTextView.getText(); |
| modifyText(text, mOldTextStart, getOldTextEnd(), mNewText, mNewTextStart, |
| mNewCursorPos); |
| } |
| |
| /** |
| * Attempts to merge this existing operation with a new edit. |
| * @param edit The new edit operation. |
| * @return If the merge succeeded, returns true. Otherwise returns false and leaves this |
| * object unchanged. |
| */ |
| private boolean mergeWith(EditOperation edit) { |
| if (DEBUG_UNDO) { |
| Log.d(TAG, "mergeWith old " + this); |
| Log.d(TAG, "mergeWith new " + edit); |
| } |
| switch (mType) { |
| case TYPE_INSERT: |
| return mergeInsertWith(edit); |
| case TYPE_DELETE: |
| return mergeDeleteWith(edit); |
| case TYPE_REPLACE: |
| return mergeReplaceWith(edit); |
| default: |
| return false; |
| } |
| } |
| |
| private boolean mergeInsertWith(EditOperation edit) { |
| // Only merge continuous insertions. |
| if (edit.mType != TYPE_INSERT) { |
| return false; |
| } |
| // Only merge insertions that are contiguous. |
| if (getNewTextEnd() != edit.mNewTextStart) { |
| return false; |
| } |
| mNewText += edit.mNewText; |
| mNewCursorPos = edit.mNewCursorPos; |
| return true; |
| } |
| |
| // TODO: Support forward delete. |
| private boolean mergeDeleteWith(EditOperation edit) { |
| // Only merge continuous deletes. |
| if (edit.mType != TYPE_DELETE) { |
| return false; |
| } |
| // Only merge deletions that are contiguous. |
| if (mOldTextStart != edit.getOldTextEnd()) { |
| return false; |
| } |
| mOldTextStart = edit.mOldTextStart; |
| mOldText = edit.mOldText + mOldText; |
| mNewCursorPos = edit.mNewCursorPos; |
| return true; |
| } |
| |
| private boolean mergeReplaceWith(EditOperation edit) { |
| // Replacements can merge only with adjacent inserts. |
| if (edit.mType != TYPE_INSERT || getNewTextEnd() != edit.mNewTextStart) { |
| return false; |
| } |
| mOldText += edit.mOldText; |
| mNewText += edit.mNewText; |
| mNewCursorPos = edit.mNewCursorPos; |
| return true; |
| } |
| |
| /** |
| * Forcibly creates a single merged edit operation by simulating the entire text |
| * contents being replaced. |
| */ |
| public void forceMergeWith(EditOperation edit) { |
| if (DEBUG_UNDO) Log.d(TAG, "forceMerge"); |
| Editor editor = getOwnerData(); |
| |
| // Copy the text of the current field. |
| // NOTE: Using StringBuilder instead of SpannableStringBuilder would be somewhat faster, |
| // but would require two parallel implementations of modifyText() because Editable and |
| // StringBuilder do not share an interface for replace/delete/insert. |
| Editable editable = (Editable) editor.mTextView.getText(); |
| Editable originalText = new SpannableStringBuilder(editable.toString()); |
| |
| // Roll back the last operation. |
| modifyText(originalText, mNewTextStart, getNewTextEnd(), mOldText, mOldTextStart, |
| mOldCursorPos); |
| |
| // Clone the text again and apply the new operation. |
| Editable finalText = new SpannableStringBuilder(editable.toString()); |
| modifyText(finalText, edit.mOldTextStart, edit.getOldTextEnd(), edit.mNewText, |
| edit.mNewTextStart, edit.mNewCursorPos); |
| |
| // Convert this operation into a non-mergeable replacement of the entire string. |
| mType = TYPE_REPLACE; |
| mNewText = finalText.toString(); |
| mNewTextStart = 0; |
| mOldText = originalText.toString(); |
| mOldTextStart = 0; |
| mNewCursorPos = edit.mNewCursorPos; |
| // mOldCursorPos is unchanged. |
| } |
| |
| private static void modifyText(Editable text, int deleteFrom, int deleteTo, |
| CharSequence newText, int newTextInsertAt, int newCursorPos) { |
| // Apply the edit if it is still valid. |
| if (isValidRange(text, deleteFrom, deleteTo) && |
| newTextInsertAt <= text.length() - (deleteTo - deleteFrom)) { |
| if (deleteFrom != deleteTo) { |
| text.delete(deleteFrom, deleteTo); |
| } |
| if (newText.length() != 0) { |
| text.insert(newTextInsertAt, newText); |
| } |
| } |
| // Restore the cursor position. If there wasn't an old cursor (newCursorPos == -1) then |
| // don't explicitly set it and rely on SpannableStringBuilder to position it. |
| // TODO: Select all the text that was undone. |
| if (0 <= newCursorPos && newCursorPos <= text.length()) { |
| Selection.setSelection(text, newCursorPos); |
| } |
| } |
| |
| private String getTypeString() { |
| switch (mType) { |
| case TYPE_INSERT: |
| return "insert"; |
| case TYPE_DELETE: |
| return "delete"; |
| case TYPE_REPLACE: |
| return "replace"; |
| default: |
| return ""; |
| } |
| } |
| |
| @Override |
| public String toString() { |
| return "[mType=" + getTypeString() + ", " + |
| "mOldText=" + mOldText + ", " + |
| "mOldTextStart=" + mOldTextStart + ", " + |
| "mNewText=" + mNewText + ", " + |
| "mNewTextStart=" + mNewTextStart + ", " + |
| "mOldCursorPos=" + mOldCursorPos + ", " + |
| "mNewCursorPos=" + mNewCursorPos + "]"; |
| } |
| |
| public static final Parcelable.ClassLoaderCreator<EditOperation> CREATOR |
| = new Parcelable.ClassLoaderCreator<EditOperation>() { |
| @Override |
| public EditOperation createFromParcel(Parcel in) { |
| return new EditOperation(in, null); |
| } |
| |
| @Override |
| public EditOperation createFromParcel(Parcel in, ClassLoader loader) { |
| return new EditOperation(in, loader); |
| } |
| |
| @Override |
| public EditOperation[] newArray(int size) { |
| return new EditOperation[size]; |
| } |
| }; |
| } |
| |
| /** |
| * A helper for enabling and handling "PROCESS_TEXT" menu actions. |
| * These allow external applications to plug into currently selected text. |
| */ |
| static final class ProcessTextIntentActionsHandler { |
| |
| private final Editor mEditor; |
| private final TextView mTextView; |
| private final PackageManager mPackageManager; |
| private final SparseArray<Intent> mAccessibilityIntents = new SparseArray<Intent>(); |
| private final SparseArray<AccessibilityNodeInfo.AccessibilityAction> mAccessibilityActions |
| = new SparseArray<AccessibilityNodeInfo.AccessibilityAction>(); |
| |
| private ProcessTextIntentActionsHandler(Editor editor) { |
| mEditor = Preconditions.checkNotNull(editor); |
| mTextView = Preconditions.checkNotNull(mEditor.mTextView); |
| mPackageManager = Preconditions.checkNotNull( |
| mTextView.getContext().getPackageManager()); |
| } |
| |
| /** |
| * Adds "PROCESS_TEXT" menu items to the specified menu. |
| */ |
| public void onInitializeMenu(Menu menu) { |
| int i = 0; |
| for (ResolveInfo resolveInfo : getSupportedActivities()) { |
| menu.add(Menu.NONE, Menu.NONE, |
| Editor.MENU_ITEM_ORDER_PROCESS_TEXT_INTENT_ACTIONS_START + i++, |
| getLabel(resolveInfo)) |
| .setIntent(createProcessTextIntentForResolveInfo(resolveInfo)) |
| .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); |
| } |
| } |
| |
| /** |
| * Performs a "PROCESS_TEXT" action if there is one associated with the specified |
| * menu item. |
| * |
| * @return True if the action was performed, false otherwise. |
| */ |
| public boolean performMenuItemAction(MenuItem item) { |
| return fireIntent(item.getIntent()); |
| } |
| |
| /** |
| * Initializes and caches "PROCESS_TEXT" accessibility actions. |
| */ |
| public void initializeAccessibilityActions() { |
| mAccessibilityIntents.clear(); |
| mAccessibilityActions.clear(); |
| int i = 0; |
| for (ResolveInfo resolveInfo : getSupportedActivities()) { |
| int actionId = TextView.ACCESSIBILITY_ACTION_PROCESS_TEXT_START_ID + i++; |
| mAccessibilityActions.put( |
| actionId, |
| new AccessibilityNodeInfo.AccessibilityAction( |
| actionId, getLabel(resolveInfo))); |
| mAccessibilityIntents.put( |
| actionId, createProcessTextIntentForResolveInfo(resolveInfo)); |
| } |
| } |
| |
| /** |
| * Adds "PROCESS_TEXT" accessibility actions to the specified accessibility node info. |
| * NOTE: This needs a prior call to {@link #initializeAccessibilityActions()} to make the |
| * latest accessibility actions available for this call. |
| */ |
| public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo nodeInfo) { |
| for (int i = 0; i < mAccessibilityActions.size(); i++) { |
| nodeInfo.addAction(mAccessibilityActions.valueAt(i)); |
| } |
| } |
| |
| /** |
| * Performs a "PROCESS_TEXT" action if there is one associated with the specified |
| * accessibility action id. |
| * |
| * @return True if the action was performed, false otherwise. |
| */ |
| public boolean performAccessibilityAction(int actionId) { |
| return fireIntent(mAccessibilityIntents.get(actionId)); |
| } |
| |
| private boolean fireIntent(Intent intent) { |
| if (intent != null && Intent.ACTION_PROCESS_TEXT.equals(intent.getAction())) { |
| intent.putExtra(Intent.EXTRA_PROCESS_TEXT, mTextView.getSelectedText()); |
| mEditor.mPreserveSelection = true; |
| mTextView.startActivityForResult(intent, TextView.PROCESS_TEXT_REQUEST_CODE); |
| return true; |
| } |
| return false; |
| } |
| |
| private List<ResolveInfo> getSupportedActivities() { |
| PackageManager packageManager = mTextView.getContext().getPackageManager(); |
| return packageManager.queryIntentActivities(createProcessTextIntent(), 0); |
| } |
| |
| private Intent createProcessTextIntentForResolveInfo(ResolveInfo info) { |
| return createProcessTextIntent() |
| .putExtra(Intent.EXTRA_PROCESS_TEXT_READONLY, !mTextView.isTextEditable()) |
| .setClassName(info.activityInfo.packageName, info.activityInfo.name); |
| } |
| |
| private Intent createProcessTextIntent() { |
| return new Intent() |
| .setAction(Intent.ACTION_PROCESS_TEXT) |
| .setType("text/plain"); |
| } |
| |
| private CharSequence getLabel(ResolveInfo resolveInfo) { |
| return resolveInfo.loadLabel(mPackageManager); |
| } |
| } |
| } |