Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.widget; |
| 18 | |
Dianne Hackborn | 3aa49b6 | 2013-04-26 16:39:17 -0700 | [diff] [blame] | 19 | import android.content.UndoManager; |
| 20 | import android.content.UndoOperation; |
| 21 | import android.content.UndoOwner; |
| 22 | import android.os.Parcel; |
| 23 | import android.os.Parcelable; |
| 24 | import android.text.InputFilter; |
| 25 | import android.text.SpannableString; |
Adam Powell | 057a585 | 2012-05-11 10:28:38 -0700 | [diff] [blame] | 26 | import com.android.internal.util.ArrayUtils; |
| 27 | import com.android.internal.widget.EditableInputConnection; |
| 28 | |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 29 | import android.R; |
Luca Zanolin | 1b15ba5 | 2013-02-20 14:31:37 +0000 | [diff] [blame] | 30 | import android.app.PendingIntent; |
| 31 | import android.app.PendingIntent.CanceledException; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 32 | import android.content.ClipData; |
| 33 | import android.content.ClipData.Item; |
| 34 | import android.content.Context; |
| 35 | import android.content.Intent; |
| 36 | import android.content.pm.PackageManager; |
| 37 | import android.content.res.TypedArray; |
| 38 | import android.graphics.Canvas; |
| 39 | import android.graphics.Color; |
| 40 | import android.graphics.Paint; |
| 41 | import android.graphics.Path; |
| 42 | import android.graphics.Rect; |
| 43 | import android.graphics.RectF; |
| 44 | import android.graphics.drawable.Drawable; |
| 45 | import android.inputmethodservice.ExtractEditText; |
| 46 | import android.os.Bundle; |
| 47 | import android.os.Handler; |
Satoshi Kataoka | 0e3849a | 2012-12-13 14:37:19 +0900 | [diff] [blame] | 48 | import android.os.Message; |
| 49 | import android.os.Messenger; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 50 | import android.os.SystemClock; |
| 51 | import android.provider.Settings; |
| 52 | import android.text.DynamicLayout; |
| 53 | import android.text.Editable; |
| 54 | import android.text.InputType; |
| 55 | import android.text.Layout; |
| 56 | import android.text.ParcelableSpan; |
| 57 | import android.text.Selection; |
| 58 | import android.text.SpanWatcher; |
| 59 | import android.text.Spannable; |
| 60 | import android.text.SpannableStringBuilder; |
| 61 | import android.text.Spanned; |
| 62 | import android.text.StaticLayout; |
| 63 | import android.text.TextUtils; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 64 | import android.text.method.KeyListener; |
| 65 | import android.text.method.MetaKeyKeyListener; |
| 66 | import android.text.method.MovementMethod; |
| 67 | import android.text.method.PasswordTransformationMethod; |
| 68 | import android.text.method.WordIterator; |
| 69 | import android.text.style.EasyEditSpan; |
| 70 | import android.text.style.SuggestionRangeSpan; |
| 71 | import android.text.style.SuggestionSpan; |
| 72 | import android.text.style.TextAppearanceSpan; |
| 73 | import android.text.style.URLSpan; |
| 74 | import android.util.DisplayMetrics; |
| 75 | import android.util.Log; |
| 76 | import android.view.ActionMode; |
| 77 | import android.view.ActionMode.Callback; |
| 78 | import android.view.DisplayList; |
| 79 | import android.view.DragEvent; |
| 80 | import android.view.Gravity; |
| 81 | import android.view.HardwareCanvas; |
| 82 | import android.view.LayoutInflater; |
| 83 | import android.view.Menu; |
| 84 | import android.view.MenuItem; |
| 85 | import android.view.MotionEvent; |
| 86 | import android.view.View; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 87 | import android.view.View.DragShadowBuilder; |
| 88 | import android.view.View.OnClickListener; |
Adam Powell | 057a585 | 2012-05-11 10:28:38 -0700 | [diff] [blame] | 89 | import android.view.ViewConfiguration; |
| 90 | import android.view.ViewGroup; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 91 | import android.view.ViewGroup.LayoutParams; |
| 92 | import android.view.ViewParent; |
| 93 | import android.view.ViewTreeObserver; |
| 94 | import android.view.WindowManager; |
| 95 | import android.view.inputmethod.CorrectionInfo; |
| 96 | import android.view.inputmethod.EditorInfo; |
| 97 | import android.view.inputmethod.ExtractedText; |
| 98 | import android.view.inputmethod.ExtractedTextRequest; |
| 99 | import android.view.inputmethod.InputConnection; |
| 100 | import android.view.inputmethod.InputMethodManager; |
| 101 | import android.widget.AdapterView.OnItemClickListener; |
| 102 | import android.widget.TextView.Drawables; |
| 103 | import android.widget.TextView.OnEditorActionListener; |
| 104 | |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 105 | import java.text.BreakIterator; |
| 106 | import java.util.Arrays; |
| 107 | import java.util.Comparator; |
| 108 | import java.util.HashMap; |
| 109 | |
| 110 | /** |
| 111 | * Helper class used by TextView to handle editable text views. |
| 112 | * |
| 113 | * @hide |
| 114 | */ |
| 115 | public class Editor { |
Adam Powell | 057a585 | 2012-05-11 10:28:38 -0700 | [diff] [blame] | 116 | private static final String TAG = "Editor"; |
Dianne Hackborn | 3aa49b6 | 2013-04-26 16:39:17 -0700 | [diff] [blame] | 117 | static final boolean DEBUG_UNDO = false; |
Adam Powell | 057a585 | 2012-05-11 10:28:38 -0700 | [diff] [blame] | 118 | |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 119 | static final int BLINK = 500; |
| 120 | private static final float[] TEMP_POSITION = new float[2]; |
| 121 | private static int DRAG_SHADOW_MAX_TEXT_LENGTH = 20; |
| 122 | |
Dianne Hackborn | 3aa49b6 | 2013-04-26 16:39:17 -0700 | [diff] [blame] | 123 | UndoManager mUndoManager; |
| 124 | UndoOwner mUndoOwner; |
| 125 | InputFilter mUndoInputFilter; |
| 126 | |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 127 | // Cursor Controllers. |
| 128 | InsertionPointCursorController mInsertionPointCursorController; |
| 129 | SelectionModifierCursorController mSelectionModifierCursorController; |
| 130 | ActionMode mSelectionActionMode; |
| 131 | boolean mInsertionControllerEnabled; |
| 132 | boolean mSelectionControllerEnabled; |
| 133 | |
| 134 | // Used to highlight a word when it is corrected by the IME |
| 135 | CorrectionHighlighter mCorrectionHighlighter; |
| 136 | |
| 137 | InputContentType mInputContentType; |
| 138 | InputMethodState mInputMethodState; |
| 139 | |
| 140 | DisplayList[] mTextDisplayLists; |
| 141 | |
| 142 | boolean mFrozenWithFocus; |
| 143 | boolean mSelectionMoved; |
| 144 | boolean mTouchFocusSelected; |
| 145 | |
| 146 | KeyListener mKeyListener; |
| 147 | int mInputType = EditorInfo.TYPE_NULL; |
| 148 | |
| 149 | boolean mDiscardNextActionUp; |
| 150 | boolean mIgnoreActionUpEvent; |
| 151 | |
| 152 | long mShowCursor; |
| 153 | Blink mBlink; |
| 154 | |
| 155 | boolean mCursorVisible = true; |
| 156 | boolean mSelectAllOnFocus; |
| 157 | boolean mTextIsSelectable; |
| 158 | |
| 159 | CharSequence mError; |
| 160 | boolean mErrorWasChanged; |
| 161 | ErrorPopup mErrorPopup; |
Fabrice Di Meglio | 1957d28 | 2012-10-25 17:42:39 -0700 | [diff] [blame] | 162 | |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 163 | /** |
| 164 | * This flag is set if the TextView tries to display an error before it |
| 165 | * is attached to the window (so its position is still unknown). |
| 166 | * It causes the error to be shown later, when onAttachedToWindow() |
| 167 | * is called. |
| 168 | */ |
| 169 | boolean mShowErrorAfterAttach; |
| 170 | |
| 171 | boolean mInBatchEditControllers; |
Gilles Debunne | 3473b2b | 2012-04-20 16:21:10 -0700 | [diff] [blame] | 172 | boolean mShowSoftInputOnFocus = true; |
Adam Powell | 057a585 | 2012-05-11 10:28:38 -0700 | [diff] [blame] | 173 | boolean mPreserveDetachedSelection; |
| 174 | boolean mTemporaryDetach; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 175 | |
| 176 | SuggestionsPopupWindow mSuggestionsPopupWindow; |
| 177 | SuggestionRangeSpan mSuggestionRangeSpan; |
| 178 | Runnable mShowSuggestionRunnable; |
| 179 | |
| 180 | final Drawable[] mCursorDrawable = new Drawable[2]; |
| 181 | int mCursorCount; // Current number of used mCursorDrawable: 0 (resource=0), 1 or 2 (split) |
| 182 | |
| 183 | private Drawable mSelectHandleLeft; |
| 184 | private Drawable mSelectHandleRight; |
| 185 | private Drawable mSelectHandleCenter; |
| 186 | |
| 187 | // Global listener that detects changes in the global position of the TextView |
| 188 | private PositionListener mPositionListener; |
| 189 | |
| 190 | float mLastDownPositionX, mLastDownPositionY; |
| 191 | Callback mCustomSelectionActionModeCallback; |
| 192 | |
| 193 | // Set when this TextView gained focus with some text selected. Will start selection mode. |
| 194 | boolean mCreatedWithASelection; |
| 195 | |
Jean Chalard | baf3094 | 2013-02-28 16:01:51 -0800 | [diff] [blame] | 196 | // The span controller helps monitoring the changes to which the Editor needs to react: |
| 197 | // - EasyEditSpans, for which we have some UI to display on attach and on hide |
| 198 | // - SelectionSpans, for which we need to call updateSelection if an IME is attached |
| 199 | private SpanController mSpanController; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 200 | |
| 201 | WordIterator mWordIterator; |
| 202 | SpellChecker mSpellChecker; |
| 203 | |
| 204 | private Rect mTempRect; |
| 205 | |
| 206 | private TextView mTextView; |
| 207 | |
| 208 | Editor(TextView textView) { |
| 209 | mTextView = textView; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 210 | } |
| 211 | |
| 212 | void onAttachedToWindow() { |
| 213 | if (mShowErrorAfterAttach) { |
| 214 | showError(); |
| 215 | mShowErrorAfterAttach = false; |
| 216 | } |
Adam Powell | 057a585 | 2012-05-11 10:28:38 -0700 | [diff] [blame] | 217 | mTemporaryDetach = false; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 218 | |
| 219 | final ViewTreeObserver observer = mTextView.getViewTreeObserver(); |
| 220 | // No need to create the controller. |
| 221 | // The get method will add the listener on controller creation. |
| 222 | if (mInsertionPointCursorController != null) { |
| 223 | observer.addOnTouchModeChangeListener(mInsertionPointCursorController); |
| 224 | } |
| 225 | if (mSelectionModifierCursorController != null) { |
Adam Powell | 057a585 | 2012-05-11 10:28:38 -0700 | [diff] [blame] | 226 | mSelectionModifierCursorController.resetTouchOffsets(); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 227 | observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); |
| 228 | } |
| 229 | updateSpellCheckSpans(0, mTextView.getText().length(), |
| 230 | true /* create the spell checker if needed */); |
Adam Powell | 057a585 | 2012-05-11 10:28:38 -0700 | [diff] [blame] | 231 | |
| 232 | if (mTextView.hasTransientState() && |
| 233 | mTextView.getSelectionStart() != mTextView.getSelectionEnd()) { |
| 234 | // Since transient state is reference counted make sure it stays matched |
| 235 | // with our own calls to it for managing selection. |
| 236 | // The action mode callback will set this back again when/if the action mode starts. |
| 237 | mTextView.setHasTransientState(false); |
| 238 | |
| 239 | // We had an active selection from before, start the selection mode. |
| 240 | startSelectionActionMode(); |
| 241 | } |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 242 | } |
| 243 | |
| 244 | void onDetachedFromWindow() { |
| 245 | if (mError != null) { |
| 246 | hideError(); |
| 247 | } |
| 248 | |
| 249 | if (mBlink != null) { |
| 250 | mBlink.removeCallbacks(mBlink); |
| 251 | } |
| 252 | |
| 253 | if (mInsertionPointCursorController != null) { |
| 254 | mInsertionPointCursorController.onDetached(); |
| 255 | } |
| 256 | |
| 257 | if (mSelectionModifierCursorController != null) { |
| 258 | mSelectionModifierCursorController.onDetached(); |
| 259 | } |
| 260 | |
| 261 | if (mShowSuggestionRunnable != null) { |
| 262 | mTextView.removeCallbacks(mShowSuggestionRunnable); |
| 263 | } |
| 264 | |
| 265 | invalidateTextDisplayList(); |
| 266 | |
| 267 | if (mSpellChecker != null) { |
| 268 | mSpellChecker.closeSession(); |
| 269 | // Forces the creation of a new SpellChecker next time this window is created. |
| 270 | // Will handle the cases where the settings has been changed in the meantime. |
| 271 | mSpellChecker = null; |
| 272 | } |
| 273 | |
Adam Powell | 057a585 | 2012-05-11 10:28:38 -0700 | [diff] [blame] | 274 | mPreserveDetachedSelection = true; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 275 | hideControllers(); |
Adam Powell | 057a585 | 2012-05-11 10:28:38 -0700 | [diff] [blame] | 276 | mPreserveDetachedSelection = false; |
| 277 | mTemporaryDetach = false; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 278 | } |
| 279 | |
| 280 | private void showError() { |
| 281 | if (mTextView.getWindowToken() == null) { |
| 282 | mShowErrorAfterAttach = true; |
| 283 | return; |
| 284 | } |
| 285 | |
| 286 | if (mErrorPopup == null) { |
| 287 | LayoutInflater inflater = LayoutInflater.from(mTextView.getContext()); |
| 288 | final TextView err = (TextView) inflater.inflate( |
| 289 | com.android.internal.R.layout.textview_hint, null); |
| 290 | |
| 291 | final float scale = mTextView.getResources().getDisplayMetrics().density; |
| 292 | mErrorPopup = new ErrorPopup(err, (int)(200 * scale + 0.5f), (int)(50 * scale + 0.5f)); |
| 293 | mErrorPopup.setFocusable(false); |
| 294 | // The user is entering text, so the input method is needed. We |
| 295 | // don't want the popup to be displayed on top of it. |
| 296 | mErrorPopup.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); |
| 297 | } |
| 298 | |
| 299 | TextView tv = (TextView) mErrorPopup.getContentView(); |
| 300 | chooseSize(mErrorPopup, mError, tv); |
| 301 | tv.setText(mError); |
| 302 | |
| 303 | mErrorPopup.showAsDropDown(mTextView, getErrorX(), getErrorY()); |
| 304 | mErrorPopup.fixDirection(mErrorPopup.isAboveAnchor()); |
| 305 | } |
| 306 | |
| 307 | public void setError(CharSequence error, Drawable icon) { |
| 308 | mError = TextUtils.stringOrSpannedString(error); |
| 309 | mErrorWasChanged = true; |
Romain Guy | d1cc187 | 2012-11-05 17:43:25 -0800 | [diff] [blame] | 310 | |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 311 | if (mError == null) { |
Fabrice Di Meglio | 5acc379 | 2012-11-12 14:08:00 -0800 | [diff] [blame] | 312 | setErrorIcon(null); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 313 | if (mErrorPopup != null) { |
| 314 | if (mErrorPopup.isShowing()) { |
| 315 | mErrorPopup.dismiss(); |
| 316 | } |
| 317 | |
| 318 | mErrorPopup = null; |
| 319 | } |
Daniel 2 Olofsson | f4ecc55 | 2013-08-13 10:30:26 +0200 | [diff] [blame] | 320 | mShowErrorAfterAttach = false; |
Fabrice Di Meglio | 5acc379 | 2012-11-12 14:08:00 -0800 | [diff] [blame] | 321 | } else { |
Romain Guy | d1cc187 | 2012-11-05 17:43:25 -0800 | [diff] [blame] | 322 | setErrorIcon(icon); |
Fabrice Di Meglio | 5acc379 | 2012-11-12 14:08:00 -0800 | [diff] [blame] | 323 | if (mTextView.isFocused()) { |
| 324 | showError(); |
| 325 | } |
Romain Guy | d1cc187 | 2012-11-05 17:43:25 -0800 | [diff] [blame] | 326 | } |
| 327 | } |
| 328 | |
| 329 | private void setErrorIcon(Drawable icon) { |
Fabrice Di Meglio | bb0cbae | 2012-11-13 20:51:24 -0800 | [diff] [blame] | 330 | Drawables dr = mTextView.mDrawables; |
| 331 | if (dr == null) { |
Fabrice Di Meglio | f7a5cdf | 2013-03-15 15:36:51 -0700 | [diff] [blame] | 332 | mTextView.mDrawables = dr = new Drawables(mTextView.getContext()); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 333 | } |
Fabrice Di Meglio | bb0cbae | 2012-11-13 20:51:24 -0800 | [diff] [blame] | 334 | dr.setErrorDrawable(icon, mTextView); |
| 335 | |
| 336 | mTextView.resetResolvedDrawables(); |
| 337 | mTextView.invalidate(); |
| 338 | mTextView.requestLayout(); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 339 | } |
| 340 | |
| 341 | private void hideError() { |
| 342 | if (mErrorPopup != null) { |
| 343 | if (mErrorPopup.isShowing()) { |
| 344 | mErrorPopup.dismiss(); |
| 345 | } |
| 346 | } |
| 347 | |
| 348 | mShowErrorAfterAttach = false; |
| 349 | } |
| 350 | |
| 351 | /** |
Fabrice Di Meglio | bb0cbae | 2012-11-13 20:51:24 -0800 | [diff] [blame] | 352 | * Returns the X offset to make the pointy top of the error point |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 353 | * at the middle of the error icon. |
| 354 | */ |
| 355 | private int getErrorX() { |
| 356 | /* |
| 357 | * The "25" is the distance between the point and the right edge |
| 358 | * of the background |
| 359 | */ |
| 360 | final float scale = mTextView.getResources().getDisplayMetrics().density; |
| 361 | |
| 362 | final Drawables dr = mTextView.mDrawables; |
Fabrice Di Meglio | bb0cbae | 2012-11-13 20:51:24 -0800 | [diff] [blame] | 363 | |
| 364 | final int layoutDirection = mTextView.getLayoutDirection(); |
| 365 | int errorX; |
| 366 | int offset; |
| 367 | switch (layoutDirection) { |
| 368 | default: |
| 369 | case View.LAYOUT_DIRECTION_LTR: |
| 370 | offset = - (dr != null ? dr.mDrawableSizeRight : 0) / 2 + (int) (25 * scale + 0.5f); |
| 371 | errorX = mTextView.getWidth() - mErrorPopup.getWidth() - |
| 372 | mTextView.getPaddingRight() + offset; |
| 373 | break; |
| 374 | case View.LAYOUT_DIRECTION_RTL: |
| 375 | offset = (dr != null ? dr.mDrawableSizeLeft : 0) / 2 - (int) (25 * scale + 0.5f); |
| 376 | errorX = mTextView.getPaddingLeft() + offset; |
| 377 | break; |
| 378 | } |
| 379 | return errorX; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 380 | } |
| 381 | |
| 382 | /** |
| 383 | * Returns the Y offset to make the pointy top of the error point |
| 384 | * at the bottom of the error icon. |
| 385 | */ |
| 386 | private int getErrorY() { |
| 387 | /* |
| 388 | * Compound, not extended, because the icon is not clipped |
| 389 | * if the text height is smaller. |
| 390 | */ |
| 391 | final int compoundPaddingTop = mTextView.getCompoundPaddingTop(); |
| 392 | int vspace = mTextView.getBottom() - mTextView.getTop() - |
| 393 | mTextView.getCompoundPaddingBottom() - compoundPaddingTop; |
| 394 | |
| 395 | final Drawables dr = mTextView.mDrawables; |
Fabrice Di Meglio | bb0cbae | 2012-11-13 20:51:24 -0800 | [diff] [blame] | 396 | |
| 397 | final int layoutDirection = mTextView.getLayoutDirection(); |
| 398 | int height; |
| 399 | switch (layoutDirection) { |
| 400 | default: |
| 401 | case View.LAYOUT_DIRECTION_LTR: |
| 402 | height = (dr != null ? dr.mDrawableHeightRight : 0); |
| 403 | break; |
| 404 | case View.LAYOUT_DIRECTION_RTL: |
| 405 | height = (dr != null ? dr.mDrawableHeightLeft : 0); |
| 406 | break; |
| 407 | } |
| 408 | |
| 409 | int icontop = compoundPaddingTop + (vspace - height) / 2; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 410 | |
| 411 | /* |
| 412 | * The "2" is the distance between the point and the top edge |
| 413 | * of the background. |
| 414 | */ |
| 415 | final float scale = mTextView.getResources().getDisplayMetrics().density; |
Fabrice Di Meglio | bb0cbae | 2012-11-13 20:51:24 -0800 | [diff] [blame] | 416 | return icontop + height - mTextView.getHeight() - (int) (2 * scale + 0.5f); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 417 | } |
| 418 | |
| 419 | void createInputContentTypeIfNeeded() { |
| 420 | if (mInputContentType == null) { |
| 421 | mInputContentType = new InputContentType(); |
| 422 | } |
| 423 | } |
| 424 | |
| 425 | void createInputMethodStateIfNeeded() { |
| 426 | if (mInputMethodState == null) { |
| 427 | mInputMethodState = new InputMethodState(); |
| 428 | } |
| 429 | } |
| 430 | |
| 431 | boolean isCursorVisible() { |
| 432 | // The default value is true, even when there is no associated Editor |
| 433 | return mCursorVisible && mTextView.isTextEditable(); |
| 434 | } |
| 435 | |
| 436 | void prepareCursorControllers() { |
| 437 | boolean windowSupportsHandles = false; |
| 438 | |
| 439 | ViewGroup.LayoutParams params = mTextView.getRootView().getLayoutParams(); |
| 440 | if (params instanceof WindowManager.LayoutParams) { |
| 441 | WindowManager.LayoutParams windowParams = (WindowManager.LayoutParams) params; |
| 442 | windowSupportsHandles = windowParams.type < WindowManager.LayoutParams.FIRST_SUB_WINDOW |
| 443 | || windowParams.type > WindowManager.LayoutParams.LAST_SUB_WINDOW; |
| 444 | } |
| 445 | |
| 446 | boolean enabled = windowSupportsHandles && mTextView.getLayout() != null; |
| 447 | mInsertionControllerEnabled = enabled && isCursorVisible(); |
| 448 | mSelectionControllerEnabled = enabled && mTextView.textCanBeSelected(); |
| 449 | |
| 450 | if (!mInsertionControllerEnabled) { |
| 451 | hideInsertionPointCursorController(); |
| 452 | if (mInsertionPointCursorController != null) { |
| 453 | mInsertionPointCursorController.onDetached(); |
| 454 | mInsertionPointCursorController = null; |
| 455 | } |
| 456 | } |
| 457 | |
| 458 | if (!mSelectionControllerEnabled) { |
| 459 | stopSelectionActionMode(); |
| 460 | if (mSelectionModifierCursorController != null) { |
| 461 | mSelectionModifierCursorController.onDetached(); |
| 462 | mSelectionModifierCursorController = null; |
| 463 | } |
| 464 | } |
| 465 | } |
| 466 | |
| 467 | private void hideInsertionPointCursorController() { |
| 468 | if (mInsertionPointCursorController != null) { |
| 469 | mInsertionPointCursorController.hide(); |
| 470 | } |
| 471 | } |
| 472 | |
| 473 | /** |
| 474 | * Hides the insertion controller and stops text selection mode, hiding the selection controller |
| 475 | */ |
| 476 | void hideControllers() { |
| 477 | hideCursorControllers(); |
| 478 | hideSpanControllers(); |
| 479 | } |
| 480 | |
| 481 | private void hideSpanControllers() { |
Jean Chalard | baf3094 | 2013-02-28 16:01:51 -0800 | [diff] [blame] | 482 | if (mSpanController != null) { |
| 483 | mSpanController.hide(); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 484 | } |
| 485 | } |
| 486 | |
| 487 | private void hideCursorControllers() { |
| 488 | if (mSuggestionsPopupWindow != null && !mSuggestionsPopupWindow.isShowingUp()) { |
| 489 | // Should be done before hide insertion point controller since it triggers a show of it |
| 490 | mSuggestionsPopupWindow.hide(); |
| 491 | } |
| 492 | hideInsertionPointCursorController(); |
| 493 | stopSelectionActionMode(); |
| 494 | } |
| 495 | |
| 496 | /** |
| 497 | * Create new SpellCheckSpans on the modified region. |
| 498 | */ |
| 499 | private void updateSpellCheckSpans(int start, int end, boolean createSpellChecker) { |
Satoshi Kataoka | d7429c1 | 2013-06-05 16:30:23 +0900 | [diff] [blame] | 500 | // Remove spans whose adjacent characters are text not punctuation |
| 501 | mTextView.removeAdjacentSuggestionSpans(start); |
| 502 | mTextView.removeAdjacentSuggestionSpans(end); |
| 503 | |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 504 | if (mTextView.isTextEditable() && mTextView.isSuggestionsEnabled() && |
| 505 | !(mTextView instanceof ExtractEditText)) { |
| 506 | if (mSpellChecker == null && createSpellChecker) { |
| 507 | mSpellChecker = new SpellChecker(mTextView); |
| 508 | } |
| 509 | if (mSpellChecker != null) { |
| 510 | mSpellChecker.spellCheck(start, end); |
| 511 | } |
| 512 | } |
| 513 | } |
| 514 | |
| 515 | void onScreenStateChanged(int screenState) { |
| 516 | switch (screenState) { |
| 517 | case View.SCREEN_STATE_ON: |
| 518 | resumeBlink(); |
| 519 | break; |
| 520 | case View.SCREEN_STATE_OFF: |
| 521 | suspendBlink(); |
| 522 | break; |
| 523 | } |
| 524 | } |
| 525 | |
| 526 | private void suspendBlink() { |
| 527 | if (mBlink != null) { |
| 528 | mBlink.cancel(); |
| 529 | } |
| 530 | } |
| 531 | |
| 532 | private void resumeBlink() { |
| 533 | if (mBlink != null) { |
| 534 | mBlink.uncancel(); |
| 535 | makeBlink(); |
| 536 | } |
| 537 | } |
| 538 | |
| 539 | void adjustInputType(boolean password, boolean passwordInputType, |
| 540 | boolean webPasswordInputType, boolean numberPasswordInputType) { |
| 541 | // mInputType has been set from inputType, possibly modified by mInputMethod. |
| 542 | // Specialize mInputType to [web]password if we have a text class and the original input |
| 543 | // type was a password. |
| 544 | if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_TEXT) { |
| 545 | if (password || passwordInputType) { |
| 546 | mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) |
| 547 | | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD; |
| 548 | } |
| 549 | if (webPasswordInputType) { |
| 550 | mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) |
| 551 | | EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; |
| 552 | } |
| 553 | } else if ((mInputType & EditorInfo.TYPE_MASK_CLASS) == EditorInfo.TYPE_CLASS_NUMBER) { |
| 554 | if (numberPasswordInputType) { |
| 555 | mInputType = (mInputType & ~(EditorInfo.TYPE_MASK_VARIATION)) |
| 556 | | EditorInfo.TYPE_NUMBER_VARIATION_PASSWORD; |
| 557 | } |
| 558 | } |
| 559 | } |
| 560 | |
| 561 | private void chooseSize(PopupWindow pop, CharSequence text, TextView tv) { |
| 562 | int wid = tv.getPaddingLeft() + tv.getPaddingRight(); |
| 563 | int ht = tv.getPaddingTop() + tv.getPaddingBottom(); |
| 564 | |
| 565 | int defaultWidthInPixels = mTextView.getResources().getDimensionPixelSize( |
| 566 | com.android.internal.R.dimen.textview_error_popup_default_width); |
| 567 | Layout l = new StaticLayout(text, tv.getPaint(), defaultWidthInPixels, |
| 568 | Layout.Alignment.ALIGN_NORMAL, 1, 0, true); |
| 569 | float max = 0; |
| 570 | for (int i = 0; i < l.getLineCount(); i++) { |
| 571 | max = Math.max(max, l.getLineWidth(i)); |
| 572 | } |
| 573 | |
| 574 | /* |
| 575 | * Now set the popup size to be big enough for the text plus the border capped |
| 576 | * to DEFAULT_MAX_POPUP_WIDTH |
| 577 | */ |
| 578 | pop.setWidth(wid + (int) Math.ceil(max)); |
| 579 | pop.setHeight(ht + l.getHeight()); |
| 580 | } |
| 581 | |
| 582 | void setFrame() { |
| 583 | if (mErrorPopup != null) { |
| 584 | TextView tv = (TextView) mErrorPopup.getContentView(); |
| 585 | chooseSize(mErrorPopup, mError, tv); |
| 586 | mErrorPopup.update(mTextView, getErrorX(), getErrorY(), |
| 587 | mErrorPopup.getWidth(), mErrorPopup.getHeight()); |
| 588 | } |
| 589 | } |
| 590 | |
| 591 | /** |
| 592 | * Unlike {@link TextView#textCanBeSelected()}, this method is based on the <i>current</i> state |
| 593 | * of the TextView. textCanBeSelected() has to be true (this is one of the conditions to have |
| 594 | * a selection controller (see {@link #prepareCursorControllers()}), but this is not sufficient. |
| 595 | */ |
| 596 | private boolean canSelectText() { |
| 597 | return hasSelectionController() && mTextView.getText().length() != 0; |
| 598 | } |
| 599 | |
| 600 | /** |
| 601 | * It would be better to rely on the input type for everything. A password inputType should have |
| 602 | * a password transformation. We should hence use isPasswordInputType instead of this method. |
| 603 | * |
| 604 | * We should: |
| 605 | * - Call setInputType in setKeyListener instead of changing the input type directly (which |
| 606 | * would install the correct transformation). |
| 607 | * - Refuse the installation of a non-password transformation in setTransformation if the input |
| 608 | * type is password. |
| 609 | * |
| 610 | * However, this is like this for legacy reasons and we cannot break existing apps. This method |
| 611 | * is useful since it matches what the user can see (obfuscated text or not). |
| 612 | * |
| 613 | * @return true if the current transformation method is of the password type. |
| 614 | */ |
| 615 | private boolean hasPasswordTransformationMethod() { |
| 616 | return mTextView.getTransformationMethod() instanceof PasswordTransformationMethod; |
| 617 | } |
| 618 | |
| 619 | /** |
| 620 | * Adjusts selection to the word under last touch offset. |
| 621 | * Return true if the operation was successfully performed. |
| 622 | */ |
| 623 | private boolean selectCurrentWord() { |
| 624 | if (!canSelectText()) { |
| 625 | return false; |
| 626 | } |
| 627 | |
| 628 | if (hasPasswordTransformationMethod()) { |
| 629 | // Always select all on a password field. |
| 630 | // Cut/copy menu entries are not available for passwords, but being able to select all |
| 631 | // is however useful to delete or paste to replace the entire content. |
| 632 | return mTextView.selectAllText(); |
| 633 | } |
| 634 | |
| 635 | int inputType = mTextView.getInputType(); |
| 636 | int klass = inputType & InputType.TYPE_MASK_CLASS; |
| 637 | int variation = inputType & InputType.TYPE_MASK_VARIATION; |
| 638 | |
| 639 | // Specific text field types: select the entire text for these |
| 640 | if (klass == InputType.TYPE_CLASS_NUMBER || |
| 641 | klass == InputType.TYPE_CLASS_PHONE || |
| 642 | klass == InputType.TYPE_CLASS_DATETIME || |
| 643 | variation == InputType.TYPE_TEXT_VARIATION_URI || |
| 644 | variation == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS || |
| 645 | variation == InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS || |
| 646 | variation == InputType.TYPE_TEXT_VARIATION_FILTER) { |
| 647 | return mTextView.selectAllText(); |
| 648 | } |
| 649 | |
| 650 | long lastTouchOffsets = getLastTouchOffsets(); |
| 651 | final int minOffset = TextUtils.unpackRangeStartFromLong(lastTouchOffsets); |
| 652 | final int maxOffset = TextUtils.unpackRangeEndFromLong(lastTouchOffsets); |
| 653 | |
| 654 | // Safety check in case standard touch event handling has been bypassed |
| 655 | if (minOffset < 0 || minOffset >= mTextView.getText().length()) return false; |
| 656 | if (maxOffset < 0 || maxOffset >= mTextView.getText().length()) return false; |
| 657 | |
| 658 | int selectionStart, selectionEnd; |
| 659 | |
| 660 | // If a URLSpan (web address, email, phone...) is found at that position, select it. |
| 661 | URLSpan[] urlSpans = ((Spanned) mTextView.getText()). |
| 662 | getSpans(minOffset, maxOffset, URLSpan.class); |
| 663 | if (urlSpans.length >= 1) { |
| 664 | URLSpan urlSpan = urlSpans[0]; |
| 665 | selectionStart = ((Spanned) mTextView.getText()).getSpanStart(urlSpan); |
| 666 | selectionEnd = ((Spanned) mTextView.getText()).getSpanEnd(urlSpan); |
| 667 | } else { |
| 668 | final WordIterator wordIterator = getWordIterator(); |
| 669 | wordIterator.setCharSequence(mTextView.getText(), minOffset, maxOffset); |
| 670 | |
| 671 | selectionStart = wordIterator.getBeginning(minOffset); |
| 672 | selectionEnd = wordIterator.getEnd(maxOffset); |
| 673 | |
| 674 | if (selectionStart == BreakIterator.DONE || selectionEnd == BreakIterator.DONE || |
| 675 | selectionStart == selectionEnd) { |
| 676 | // Possible when the word iterator does not properly handle the text's language |
| 677 | long range = getCharRange(minOffset); |
| 678 | selectionStart = TextUtils.unpackRangeStartFromLong(range); |
| 679 | selectionEnd = TextUtils.unpackRangeEndFromLong(range); |
| 680 | } |
| 681 | } |
| 682 | |
| 683 | Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); |
| 684 | return selectionEnd > selectionStart; |
| 685 | } |
| 686 | |
| 687 | void onLocaleChanged() { |
| 688 | // Will be re-created on demand in getWordIterator with the proper new locale |
| 689 | mWordIterator = null; |
| 690 | } |
| 691 | |
| 692 | /** |
| 693 | * @hide |
| 694 | */ |
| 695 | public WordIterator getWordIterator() { |
| 696 | if (mWordIterator == null) { |
| 697 | mWordIterator = new WordIterator(mTextView.getTextServicesLocale()); |
| 698 | } |
| 699 | return mWordIterator; |
| 700 | } |
| 701 | |
| 702 | private long getCharRange(int offset) { |
| 703 | final int textLength = mTextView.getText().length(); |
| 704 | if (offset + 1 < textLength) { |
| 705 | final char currentChar = mTextView.getText().charAt(offset); |
| 706 | final char nextChar = mTextView.getText().charAt(offset + 1); |
| 707 | if (Character.isSurrogatePair(currentChar, nextChar)) { |
| 708 | return TextUtils.packRangeInLong(offset, offset + 2); |
| 709 | } |
| 710 | } |
| 711 | if (offset < textLength) { |
| 712 | return TextUtils.packRangeInLong(offset, offset + 1); |
| 713 | } |
| 714 | if (offset - 2 >= 0) { |
| 715 | final char previousChar = mTextView.getText().charAt(offset - 1); |
| 716 | final char previousPreviousChar = mTextView.getText().charAt(offset - 2); |
| 717 | if (Character.isSurrogatePair(previousPreviousChar, previousChar)) { |
| 718 | return TextUtils.packRangeInLong(offset - 2, offset); |
| 719 | } |
| 720 | } |
| 721 | if (offset - 1 >= 0) { |
| 722 | return TextUtils.packRangeInLong(offset - 1, offset); |
| 723 | } |
| 724 | return TextUtils.packRangeInLong(offset, offset); |
| 725 | } |
| 726 | |
| 727 | private boolean touchPositionIsInSelection() { |
| 728 | int selectionStart = mTextView.getSelectionStart(); |
| 729 | int selectionEnd = mTextView.getSelectionEnd(); |
| 730 | |
| 731 | if (selectionStart == selectionEnd) { |
| 732 | return false; |
| 733 | } |
| 734 | |
| 735 | if (selectionStart > selectionEnd) { |
| 736 | int tmp = selectionStart; |
| 737 | selectionStart = selectionEnd; |
| 738 | selectionEnd = tmp; |
| 739 | Selection.setSelection((Spannable) mTextView.getText(), selectionStart, selectionEnd); |
| 740 | } |
| 741 | |
| 742 | SelectionModifierCursorController selectionController = getSelectionController(); |
| 743 | int minOffset = selectionController.getMinTouchOffset(); |
| 744 | int maxOffset = selectionController.getMaxTouchOffset(); |
| 745 | |
| 746 | return ((minOffset >= selectionStart) && (maxOffset < selectionEnd)); |
| 747 | } |
| 748 | |
| 749 | private PositionListener getPositionListener() { |
| 750 | if (mPositionListener == null) { |
| 751 | mPositionListener = new PositionListener(); |
| 752 | } |
| 753 | return mPositionListener; |
| 754 | } |
| 755 | |
| 756 | private interface TextViewPositionListener { |
| 757 | public void updatePosition(int parentPositionX, int parentPositionY, |
| 758 | boolean parentPositionChanged, boolean parentScrolled); |
| 759 | } |
| 760 | |
| 761 | private boolean isPositionVisible(int positionX, int positionY) { |
| 762 | synchronized (TEMP_POSITION) { |
| 763 | final float[] position = TEMP_POSITION; |
| 764 | position[0] = positionX; |
| 765 | position[1] = positionY; |
| 766 | View view = mTextView; |
| 767 | |
| 768 | while (view != null) { |
| 769 | if (view != mTextView) { |
| 770 | // Local scroll is already taken into account in positionX/Y |
| 771 | position[0] -= view.getScrollX(); |
| 772 | position[1] -= view.getScrollY(); |
| 773 | } |
| 774 | |
| 775 | if (position[0] < 0 || position[1] < 0 || |
| 776 | position[0] > view.getWidth() || position[1] > view.getHeight()) { |
| 777 | return false; |
| 778 | } |
| 779 | |
| 780 | if (!view.getMatrix().isIdentity()) { |
| 781 | view.getMatrix().mapPoints(position); |
| 782 | } |
| 783 | |
| 784 | position[0] += view.getLeft(); |
| 785 | position[1] += view.getTop(); |
| 786 | |
| 787 | final ViewParent parent = view.getParent(); |
| 788 | if (parent instanceof View) { |
| 789 | view = (View) parent; |
| 790 | } else { |
| 791 | // We've reached the ViewRoot, stop iterating |
| 792 | view = null; |
| 793 | } |
| 794 | } |
| 795 | } |
| 796 | |
| 797 | // We've been able to walk up the view hierarchy and the position was never clipped |
| 798 | return true; |
| 799 | } |
| 800 | |
| 801 | private boolean isOffsetVisible(int offset) { |
| 802 | Layout layout = mTextView.getLayout(); |
Victoria Lease | b9b77ae | 2013-10-13 15:12:52 -0700 | [diff] [blame] | 803 | if (layout == null) return false; |
| 804 | |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 805 | final int line = layout.getLineForOffset(offset); |
| 806 | final int lineBottom = layout.getLineBottom(line); |
| 807 | final int primaryHorizontal = (int) layout.getPrimaryHorizontal(offset); |
| 808 | return isPositionVisible(primaryHorizontal + mTextView.viewportToContentHorizontalOffset(), |
| 809 | lineBottom + mTextView.viewportToContentVerticalOffset()); |
| 810 | } |
| 811 | |
| 812 | /** Returns true if the screen coordinates position (x,y) corresponds to a character displayed |
| 813 | * in the view. Returns false when the position is in the empty space of left/right of text. |
| 814 | */ |
| 815 | private boolean isPositionOnText(float x, float y) { |
| 816 | Layout layout = mTextView.getLayout(); |
| 817 | if (layout == null) return false; |
| 818 | |
| 819 | final int line = mTextView.getLineAtCoordinate(y); |
| 820 | x = mTextView.convertToLocalHorizontalCoordinate(x); |
| 821 | |
| 822 | if (x < layout.getLineLeft(line)) return false; |
| 823 | if (x > layout.getLineRight(line)) return false; |
| 824 | return true; |
| 825 | } |
| 826 | |
| 827 | public boolean performLongClick(boolean handled) { |
| 828 | // Long press in empty space moves cursor and shows the Paste affordance if available. |
| 829 | if (!handled && !isPositionOnText(mLastDownPositionX, mLastDownPositionY) && |
| 830 | mInsertionControllerEnabled) { |
| 831 | final int offset = mTextView.getOffsetForPosition(mLastDownPositionX, |
| 832 | mLastDownPositionY); |
| 833 | stopSelectionActionMode(); |
| 834 | Selection.setSelection((Spannable) mTextView.getText(), offset); |
| 835 | getInsertionController().showWithActionPopup(); |
| 836 | handled = true; |
| 837 | } |
| 838 | |
| 839 | if (!handled && mSelectionActionMode != null) { |
| 840 | if (touchPositionIsInSelection()) { |
| 841 | // Start a drag |
| 842 | final int start = mTextView.getSelectionStart(); |
| 843 | final int end = mTextView.getSelectionEnd(); |
| 844 | CharSequence selectedText = mTextView.getTransformedText(start, end); |
| 845 | ClipData data = ClipData.newPlainText(null, selectedText); |
| 846 | DragLocalState localState = new DragLocalState(mTextView, start, end); |
| 847 | mTextView.startDrag(data, getTextThumbnailBuilder(selectedText), localState, 0); |
| 848 | stopSelectionActionMode(); |
| 849 | } else { |
| 850 | getSelectionController().hide(); |
| 851 | selectCurrentWord(); |
| 852 | getSelectionController().show(); |
| 853 | } |
| 854 | handled = true; |
| 855 | } |
| 856 | |
| 857 | // Start a new selection |
| 858 | if (!handled) { |
| 859 | handled = startSelectionActionMode(); |
| 860 | } |
| 861 | |
| 862 | return handled; |
| 863 | } |
| 864 | |
| 865 | private long getLastTouchOffsets() { |
| 866 | SelectionModifierCursorController selectionController = getSelectionController(); |
| 867 | final int minOffset = selectionController.getMinTouchOffset(); |
| 868 | final int maxOffset = selectionController.getMaxTouchOffset(); |
| 869 | return TextUtils.packRangeInLong(minOffset, maxOffset); |
| 870 | } |
| 871 | |
| 872 | void onFocusChanged(boolean focused, int direction) { |
| 873 | mShowCursor = SystemClock.uptimeMillis(); |
| 874 | ensureEndedBatchEdit(); |
| 875 | |
| 876 | if (focused) { |
| 877 | int selStart = mTextView.getSelectionStart(); |
| 878 | int selEnd = mTextView.getSelectionEnd(); |
| 879 | |
| 880 | // SelectAllOnFocus fields are highlighted and not selected. Do not start text selection |
| 881 | // mode for these, unless there was a specific selection already started. |
| 882 | final boolean isFocusHighlighted = mSelectAllOnFocus && selStart == 0 && |
| 883 | selEnd == mTextView.getText().length(); |
| 884 | |
| 885 | mCreatedWithASelection = mFrozenWithFocus && mTextView.hasSelection() && |
| 886 | !isFocusHighlighted; |
| 887 | |
| 888 | if (!mFrozenWithFocus || (selStart < 0 || selEnd < 0)) { |
| 889 | // If a tap was used to give focus to that view, move cursor at tap position. |
| 890 | // Has to be done before onTakeFocus, which can be overloaded. |
| 891 | final int lastTapPosition = getLastTapPosition(); |
| 892 | if (lastTapPosition >= 0) { |
| 893 | Selection.setSelection((Spannable) mTextView.getText(), lastTapPosition); |
| 894 | } |
| 895 | |
| 896 | // Note this may have to be moved out of the Editor class |
| 897 | MovementMethod mMovement = mTextView.getMovementMethod(); |
| 898 | if (mMovement != null) { |
| 899 | mMovement.onTakeFocus(mTextView, (Spannable) mTextView.getText(), direction); |
| 900 | } |
| 901 | |
| 902 | // The DecorView does not have focus when the 'Done' ExtractEditText button is |
| 903 | // pressed. Since it is the ViewAncestor's mView, it requests focus before |
| 904 | // ExtractEditText clears focus, which gives focus to the ExtractEditText. |
| 905 | // This special case ensure that we keep current selection in that case. |
| 906 | // It would be better to know why the DecorView does not have focus at that time. |
| 907 | if (((mTextView instanceof ExtractEditText) || mSelectionMoved) && |
| 908 | selStart >= 0 && selEnd >= 0) { |
| 909 | /* |
| 910 | * Someone intentionally set the selection, so let them |
| 911 | * do whatever it is that they wanted to do instead of |
| 912 | * the default on-focus behavior. We reset the selection |
| 913 | * here instead of just skipping the onTakeFocus() call |
| 914 | * because some movement methods do something other than |
| 915 | * just setting the selection in theirs and we still |
| 916 | * need to go through that path. |
| 917 | */ |
| 918 | Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); |
| 919 | } |
| 920 | |
| 921 | if (mSelectAllOnFocus) { |
| 922 | mTextView.selectAllText(); |
| 923 | } |
| 924 | |
| 925 | mTouchFocusSelected = true; |
| 926 | } |
| 927 | |
| 928 | mFrozenWithFocus = false; |
| 929 | mSelectionMoved = false; |
| 930 | |
| 931 | if (mError != null) { |
| 932 | showError(); |
| 933 | } |
| 934 | |
| 935 | makeBlink(); |
| 936 | } else { |
| 937 | if (mError != null) { |
| 938 | hideError(); |
| 939 | } |
| 940 | // Don't leave us in the middle of a batch edit. |
| 941 | mTextView.onEndBatchEdit(); |
| 942 | |
| 943 | if (mTextView instanceof ExtractEditText) { |
| 944 | // terminateTextSelectionMode removes selection, which we want to keep when |
| 945 | // ExtractEditText goes out of focus. |
| 946 | final int selStart = mTextView.getSelectionStart(); |
| 947 | final int selEnd = mTextView.getSelectionEnd(); |
| 948 | hideControllers(); |
| 949 | Selection.setSelection((Spannable) mTextView.getText(), selStart, selEnd); |
| 950 | } else { |
Adam Powell | 057a585 | 2012-05-11 10:28:38 -0700 | [diff] [blame] | 951 | if (mTemporaryDetach) mPreserveDetachedSelection = true; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 952 | hideControllers(); |
Adam Powell | 057a585 | 2012-05-11 10:28:38 -0700 | [diff] [blame] | 953 | if (mTemporaryDetach) mPreserveDetachedSelection = false; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 954 | downgradeEasyCorrectionSpans(); |
| 955 | } |
| 956 | |
| 957 | // No need to create the controller |
| 958 | if (mSelectionModifierCursorController != null) { |
| 959 | mSelectionModifierCursorController.resetTouchOffsets(); |
| 960 | } |
| 961 | } |
| 962 | } |
| 963 | |
| 964 | /** |
| 965 | * Downgrades to simple suggestions all the easy correction spans that are not a spell check |
| 966 | * span. |
| 967 | */ |
| 968 | private void downgradeEasyCorrectionSpans() { |
| 969 | CharSequence text = mTextView.getText(); |
| 970 | if (text instanceof Spannable) { |
| 971 | Spannable spannable = (Spannable) text; |
| 972 | SuggestionSpan[] suggestionSpans = spannable.getSpans(0, |
| 973 | spannable.length(), SuggestionSpan.class); |
| 974 | for (int i = 0; i < suggestionSpans.length; i++) { |
| 975 | int flags = suggestionSpans[i].getFlags(); |
| 976 | if ((flags & SuggestionSpan.FLAG_EASY_CORRECT) != 0 |
| 977 | && (flags & SuggestionSpan.FLAG_MISSPELLED) == 0) { |
| 978 | flags &= ~SuggestionSpan.FLAG_EASY_CORRECT; |
| 979 | suggestionSpans[i].setFlags(flags); |
| 980 | } |
| 981 | } |
| 982 | } |
| 983 | } |
| 984 | |
| 985 | void sendOnTextChanged(int start, int after) { |
| 986 | updateSpellCheckSpans(start, start + after, false); |
| 987 | |
| 988 | // Hide the controllers as soon as text is modified (typing, procedural...) |
| 989 | // We do not hide the span controllers, since they can be added when a new text is |
| 990 | // inserted into the text view (voice IME). |
| 991 | hideCursorControllers(); |
| 992 | } |
| 993 | |
| 994 | private int getLastTapPosition() { |
| 995 | // No need to create the controller at that point, no last tap position saved |
| 996 | if (mSelectionModifierCursorController != null) { |
| 997 | int lastTapPosition = mSelectionModifierCursorController.getMinTouchOffset(); |
| 998 | if (lastTapPosition >= 0) { |
| 999 | // Safety check, should not be possible. |
| 1000 | if (lastTapPosition > mTextView.getText().length()) { |
| 1001 | lastTapPosition = mTextView.getText().length(); |
| 1002 | } |
| 1003 | return lastTapPosition; |
| 1004 | } |
| 1005 | } |
| 1006 | |
| 1007 | return -1; |
| 1008 | } |
| 1009 | |
| 1010 | void onWindowFocusChanged(boolean hasWindowFocus) { |
| 1011 | if (hasWindowFocus) { |
| 1012 | if (mBlink != null) { |
| 1013 | mBlink.uncancel(); |
| 1014 | makeBlink(); |
| 1015 | } |
| 1016 | } else { |
| 1017 | if (mBlink != null) { |
| 1018 | mBlink.cancel(); |
| 1019 | } |
| 1020 | if (mInputContentType != null) { |
| 1021 | mInputContentType.enterDown = false; |
| 1022 | } |
| 1023 | // Order matters! Must be done before onParentLostFocus to rely on isShowingUp |
| 1024 | hideControllers(); |
| 1025 | if (mSuggestionsPopupWindow != null) { |
| 1026 | mSuggestionsPopupWindow.onParentLostFocus(); |
| 1027 | } |
| 1028 | |
Gilles Debunne | c72fba8 | 2012-06-26 14:47:07 -0700 | [diff] [blame] | 1029 | // Don't leave us in the middle of a batch edit. Same as in onFocusChanged |
| 1030 | ensureEndedBatchEdit(); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1031 | } |
| 1032 | } |
| 1033 | |
| 1034 | void onTouchEvent(MotionEvent event) { |
| 1035 | if (hasSelectionController()) { |
| 1036 | getSelectionController().onTouchEvent(event); |
| 1037 | } |
| 1038 | |
| 1039 | if (mShowSuggestionRunnable != null) { |
| 1040 | mTextView.removeCallbacks(mShowSuggestionRunnable); |
| 1041 | mShowSuggestionRunnable = null; |
| 1042 | } |
| 1043 | |
| 1044 | if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { |
| 1045 | mLastDownPositionX = event.getX(); |
| 1046 | mLastDownPositionY = event.getY(); |
| 1047 | |
| 1048 | // Reset this state; it will be re-set if super.onTouchEvent |
| 1049 | // causes focus to move to the view. |
| 1050 | mTouchFocusSelected = false; |
| 1051 | mIgnoreActionUpEvent = false; |
| 1052 | } |
| 1053 | } |
| 1054 | |
| 1055 | public void beginBatchEdit() { |
| 1056 | mInBatchEditControllers = true; |
| 1057 | final InputMethodState ims = mInputMethodState; |
| 1058 | if (ims != null) { |
| 1059 | int nesting = ++ims.mBatchEditNesting; |
| 1060 | if (nesting == 1) { |
| 1061 | ims.mCursorChanged = false; |
| 1062 | ims.mChangedDelta = 0; |
| 1063 | if (ims.mContentChanged) { |
| 1064 | // We already have a pending change from somewhere else, |
| 1065 | // so turn this into a full update. |
| 1066 | ims.mChangedStart = 0; |
| 1067 | ims.mChangedEnd = mTextView.getText().length(); |
| 1068 | } else { |
| 1069 | ims.mChangedStart = EXTRACT_UNKNOWN; |
| 1070 | ims.mChangedEnd = EXTRACT_UNKNOWN; |
| 1071 | ims.mContentChanged = false; |
| 1072 | } |
| 1073 | mTextView.onBeginBatchEdit(); |
| 1074 | } |
| 1075 | } |
| 1076 | } |
| 1077 | |
| 1078 | public void endBatchEdit() { |
| 1079 | mInBatchEditControllers = false; |
| 1080 | final InputMethodState ims = mInputMethodState; |
| 1081 | if (ims != null) { |
| 1082 | int nesting = --ims.mBatchEditNesting; |
| 1083 | if (nesting == 0) { |
| 1084 | finishBatchEdit(ims); |
| 1085 | } |
| 1086 | } |
| 1087 | } |
| 1088 | |
| 1089 | void ensureEndedBatchEdit() { |
| 1090 | final InputMethodState ims = mInputMethodState; |
| 1091 | if (ims != null && ims.mBatchEditNesting != 0) { |
| 1092 | ims.mBatchEditNesting = 0; |
| 1093 | finishBatchEdit(ims); |
| 1094 | } |
| 1095 | } |
| 1096 | |
| 1097 | void finishBatchEdit(final InputMethodState ims) { |
| 1098 | mTextView.onEndBatchEdit(); |
| 1099 | |
| 1100 | if (ims.mContentChanged || ims.mSelectionModeChanged) { |
| 1101 | mTextView.updateAfterEdit(); |
| 1102 | reportExtractedText(); |
| 1103 | } else if (ims.mCursorChanged) { |
Jean Chalard | c99d33f | 2013-02-28 16:39:47 -0800 | [diff] [blame] | 1104 | // Cheesy way to get us to report the current cursor location. |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1105 | mTextView.invalidateCursor(); |
| 1106 | } |
Jean Chalard | c99d33f | 2013-02-28 16:39:47 -0800 | [diff] [blame] | 1107 | // sendUpdateSelection knows to avoid sending if the selection did |
| 1108 | // not actually change. |
| 1109 | sendUpdateSelection(); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1110 | } |
| 1111 | |
| 1112 | static final int EXTRACT_NOTHING = -2; |
| 1113 | static final int EXTRACT_UNKNOWN = -1; |
| 1114 | |
| 1115 | boolean extractText(ExtractedTextRequest request, ExtractedText outText) { |
| 1116 | return extractTextInternal(request, EXTRACT_UNKNOWN, EXTRACT_UNKNOWN, |
| 1117 | EXTRACT_UNKNOWN, outText); |
| 1118 | } |
| 1119 | |
| 1120 | private boolean extractTextInternal(ExtractedTextRequest request, |
| 1121 | int partialStartOffset, int partialEndOffset, int delta, |
| 1122 | ExtractedText outText) { |
| 1123 | final CharSequence content = mTextView.getText(); |
| 1124 | if (content != null) { |
| 1125 | if (partialStartOffset != EXTRACT_NOTHING) { |
| 1126 | final int N = content.length(); |
| 1127 | if (partialStartOffset < 0) { |
| 1128 | outText.partialStartOffset = outText.partialEndOffset = -1; |
| 1129 | partialStartOffset = 0; |
| 1130 | partialEndOffset = N; |
| 1131 | } else { |
| 1132 | // Now use the delta to determine the actual amount of text |
| 1133 | // we need. |
| 1134 | partialEndOffset += delta; |
| 1135 | // Adjust offsets to ensure we contain full spans. |
| 1136 | if (content instanceof Spanned) { |
| 1137 | Spanned spanned = (Spanned)content; |
| 1138 | Object[] spans = spanned.getSpans(partialStartOffset, |
| 1139 | partialEndOffset, ParcelableSpan.class); |
| 1140 | int i = spans.length; |
| 1141 | while (i > 0) { |
| 1142 | i--; |
| 1143 | int j = spanned.getSpanStart(spans[i]); |
| 1144 | if (j < partialStartOffset) partialStartOffset = j; |
| 1145 | j = spanned.getSpanEnd(spans[i]); |
| 1146 | if (j > partialEndOffset) partialEndOffset = j; |
| 1147 | } |
| 1148 | } |
| 1149 | outText.partialStartOffset = partialStartOffset; |
| 1150 | outText.partialEndOffset = partialEndOffset - delta; |
| 1151 | |
| 1152 | if (partialStartOffset > N) { |
| 1153 | partialStartOffset = N; |
| 1154 | } else if (partialStartOffset < 0) { |
| 1155 | partialStartOffset = 0; |
| 1156 | } |
| 1157 | if (partialEndOffset > N) { |
| 1158 | partialEndOffset = N; |
| 1159 | } else if (partialEndOffset < 0) { |
| 1160 | partialEndOffset = 0; |
| 1161 | } |
| 1162 | } |
| 1163 | if ((request.flags&InputConnection.GET_TEXT_WITH_STYLES) != 0) { |
| 1164 | outText.text = content.subSequence(partialStartOffset, |
| 1165 | partialEndOffset); |
| 1166 | } else { |
| 1167 | outText.text = TextUtils.substring(content, partialStartOffset, |
| 1168 | partialEndOffset); |
| 1169 | } |
| 1170 | } else { |
| 1171 | outText.partialStartOffset = 0; |
| 1172 | outText.partialEndOffset = 0; |
| 1173 | outText.text = ""; |
| 1174 | } |
| 1175 | outText.flags = 0; |
| 1176 | if (MetaKeyKeyListener.getMetaState(content, MetaKeyKeyListener.META_SELECTING) != 0) { |
| 1177 | outText.flags |= ExtractedText.FLAG_SELECTING; |
| 1178 | } |
| 1179 | if (mTextView.isSingleLine()) { |
| 1180 | outText.flags |= ExtractedText.FLAG_SINGLE_LINE; |
| 1181 | } |
| 1182 | outText.startOffset = 0; |
| 1183 | outText.selectionStart = mTextView.getSelectionStart(); |
| 1184 | outText.selectionEnd = mTextView.getSelectionEnd(); |
| 1185 | return true; |
| 1186 | } |
| 1187 | return false; |
| 1188 | } |
| 1189 | |
| 1190 | boolean reportExtractedText() { |
| 1191 | final Editor.InputMethodState ims = mInputMethodState; |
| 1192 | if (ims != null) { |
| 1193 | final boolean contentChanged = ims.mContentChanged; |
| 1194 | if (contentChanged || ims.mSelectionModeChanged) { |
| 1195 | ims.mContentChanged = false; |
| 1196 | ims.mSelectionModeChanged = false; |
Gilles Debunne | c62589c | 2012-04-12 14:50:23 -0700 | [diff] [blame] | 1197 | final ExtractedTextRequest req = ims.mExtractedTextRequest; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1198 | if (req != null) { |
| 1199 | InputMethodManager imm = InputMethodManager.peekInstance(); |
| 1200 | if (imm != null) { |
| 1201 | if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, |
| 1202 | "Retrieving extracted start=" + ims.mChangedStart + |
| 1203 | " end=" + ims.mChangedEnd + |
| 1204 | " delta=" + ims.mChangedDelta); |
| 1205 | if (ims.mChangedStart < 0 && !contentChanged) { |
| 1206 | ims.mChangedStart = EXTRACT_NOTHING; |
| 1207 | } |
| 1208 | if (extractTextInternal(req, ims.mChangedStart, ims.mChangedEnd, |
Gilles Debunne | c62589c | 2012-04-12 14:50:23 -0700 | [diff] [blame] | 1209 | ims.mChangedDelta, ims.mExtractedText)) { |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1210 | if (TextView.DEBUG_EXTRACT) Log.v(TextView.LOG_TAG, |
| 1211 | "Reporting extracted start=" + |
Gilles Debunne | c62589c | 2012-04-12 14:50:23 -0700 | [diff] [blame] | 1212 | ims.mExtractedText.partialStartOffset + |
| 1213 | " end=" + ims.mExtractedText.partialEndOffset + |
| 1214 | ": " + ims.mExtractedText.text); |
| 1215 | |
| 1216 | imm.updateExtractedText(mTextView, req.token, ims.mExtractedText); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1217 | ims.mChangedStart = EXTRACT_UNKNOWN; |
| 1218 | ims.mChangedEnd = EXTRACT_UNKNOWN; |
| 1219 | ims.mChangedDelta = 0; |
| 1220 | ims.mContentChanged = false; |
| 1221 | return true; |
| 1222 | } |
| 1223 | } |
| 1224 | } |
| 1225 | } |
| 1226 | } |
| 1227 | return false; |
| 1228 | } |
| 1229 | |
Jean Chalard | df7c72f | 2013-02-28 15:28:54 -0800 | [diff] [blame] | 1230 | private void sendUpdateSelection() { |
| 1231 | if (null != mInputMethodState && mInputMethodState.mBatchEditNesting <= 0) { |
| 1232 | final InputMethodManager imm = InputMethodManager.peekInstance(); |
| 1233 | if (null != imm) { |
| 1234 | final int selectionStart = mTextView.getSelectionStart(); |
| 1235 | final int selectionEnd = mTextView.getSelectionEnd(); |
| 1236 | int candStart = -1; |
| 1237 | int candEnd = -1; |
| 1238 | if (mTextView.getText() instanceof Spannable) { |
| 1239 | final Spannable sp = (Spannable) mTextView.getText(); |
| 1240 | candStart = EditableInputConnection.getComposingSpanStart(sp); |
| 1241 | candEnd = EditableInputConnection.getComposingSpanEnd(sp); |
| 1242 | } |
Jean Chalard | c99d33f | 2013-02-28 16:39:47 -0800 | [diff] [blame] | 1243 | // InputMethodManager#updateSelection skips sending the message if |
| 1244 | // none of the parameters have changed since the last time we called it. |
Jean Chalard | df7c72f | 2013-02-28 15:28:54 -0800 | [diff] [blame] | 1245 | imm.updateSelection(mTextView, |
| 1246 | selectionStart, selectionEnd, candStart, candEnd); |
| 1247 | } |
| 1248 | } |
| 1249 | } |
| 1250 | |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1251 | void onDraw(Canvas canvas, Layout layout, Path highlight, Paint highlightPaint, |
| 1252 | int cursorOffsetVertical) { |
| 1253 | final int selectionStart = mTextView.getSelectionStart(); |
| 1254 | final int selectionEnd = mTextView.getSelectionEnd(); |
| 1255 | |
| 1256 | final InputMethodState ims = mInputMethodState; |
| 1257 | if (ims != null && ims.mBatchEditNesting == 0) { |
| 1258 | InputMethodManager imm = InputMethodManager.peekInstance(); |
| 1259 | if (imm != null) { |
| 1260 | if (imm.isActive(mTextView)) { |
| 1261 | boolean reported = false; |
| 1262 | if (ims.mContentChanged || ims.mSelectionModeChanged) { |
| 1263 | // We are in extract mode and the content has changed |
| 1264 | // in some way... just report complete new text to the |
| 1265 | // input method. |
| 1266 | reported = reportExtractedText(); |
| 1267 | } |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1268 | } |
| 1269 | |
| 1270 | if (imm.isWatchingCursor(mTextView) && highlight != null) { |
| 1271 | highlight.computeBounds(ims.mTmpRectF, true); |
| 1272 | ims.mTmpOffset[0] = ims.mTmpOffset[1] = 0; |
| 1273 | |
| 1274 | canvas.getMatrix().mapPoints(ims.mTmpOffset); |
| 1275 | ims.mTmpRectF.offset(ims.mTmpOffset[0], ims.mTmpOffset[1]); |
| 1276 | |
| 1277 | ims.mTmpRectF.offset(0, cursorOffsetVertical); |
| 1278 | |
| 1279 | ims.mCursorRectInWindow.set((int)(ims.mTmpRectF.left + 0.5), |
| 1280 | (int)(ims.mTmpRectF.top + 0.5), |
| 1281 | (int)(ims.mTmpRectF.right + 0.5), |
| 1282 | (int)(ims.mTmpRectF.bottom + 0.5)); |
| 1283 | |
| 1284 | imm.updateCursor(mTextView, |
| 1285 | ims.mCursorRectInWindow.left, ims.mCursorRectInWindow.top, |
| 1286 | ims.mCursorRectInWindow.right, ims.mCursorRectInWindow.bottom); |
| 1287 | } |
| 1288 | } |
| 1289 | } |
| 1290 | |
| 1291 | if (mCorrectionHighlighter != null) { |
| 1292 | mCorrectionHighlighter.draw(canvas, cursorOffsetVertical); |
| 1293 | } |
| 1294 | |
| 1295 | if (highlight != null && selectionStart == selectionEnd && mCursorCount > 0) { |
| 1296 | drawCursor(canvas, cursorOffsetVertical); |
| 1297 | // Rely on the drawable entirely, do not draw the cursor line. |
| 1298 | // Has to be done after the IMM related code above which relies on the highlight. |
| 1299 | highlight = null; |
| 1300 | } |
| 1301 | |
| 1302 | if (mTextView.canHaveDisplayList() && canvas.isHardwareAccelerated()) { |
| 1303 | drawHardwareAccelerated(canvas, layout, highlight, highlightPaint, |
| 1304 | cursorOffsetVertical); |
| 1305 | } else { |
| 1306 | layout.draw(canvas, highlight, highlightPaint, cursorOffsetVertical); |
| 1307 | } |
| 1308 | } |
| 1309 | |
| 1310 | private void drawHardwareAccelerated(Canvas canvas, Layout layout, Path highlight, |
| 1311 | Paint highlightPaint, int cursorOffsetVertical) { |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1312 | final long lineRange = layout.getLineRangeForDraw(canvas); |
| 1313 | int firstLine = TextUtils.unpackRangeStartFromLong(lineRange); |
| 1314 | int lastLine = TextUtils.unpackRangeEndFromLong(lineRange); |
| 1315 | if (lastLine < 0) return; |
| 1316 | |
| 1317 | layout.drawBackground(canvas, highlight, highlightPaint, cursorOffsetVertical, |
| 1318 | firstLine, lastLine); |
| 1319 | |
| 1320 | if (layout instanceof DynamicLayout) { |
| 1321 | if (mTextDisplayLists == null) { |
| 1322 | mTextDisplayLists = new DisplayList[ArrayUtils.idealObjectArraySize(0)]; |
| 1323 | } |
| 1324 | |
| 1325 | DynamicLayout dynamicLayout = (DynamicLayout) layout; |
Gilles Debunne | 157aafc | 2012-04-19 17:21:57 -0700 | [diff] [blame] | 1326 | int[] blockEndLines = dynamicLayout.getBlockEndLines(); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1327 | int[] blockIndices = dynamicLayout.getBlockIndices(); |
| 1328 | final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); |
Sangkyu Lee | 955beb2 | 2012-12-10 15:47:00 +0900 | [diff] [blame] | 1329 | final int indexFirstChangedBlock = dynamicLayout.getIndexFirstChangedBlock(); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1330 | |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1331 | int endOfPreviousBlock = -1; |
| 1332 | int searchStartIndex = 0; |
| 1333 | for (int i = 0; i < numberOfBlocks; i++) { |
Gilles Debunne | 157aafc | 2012-04-19 17:21:57 -0700 | [diff] [blame] | 1334 | int blockEndLine = blockEndLines[i]; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1335 | int blockIndex = blockIndices[i]; |
| 1336 | |
| 1337 | final boolean blockIsInvalid = blockIndex == DynamicLayout.INVALID_BLOCK_INDEX; |
| 1338 | if (blockIsInvalid) { |
| 1339 | blockIndex = getAvailableDisplayListIndex(blockIndices, numberOfBlocks, |
| 1340 | searchStartIndex); |
Gilles Debunne | 157aafc | 2012-04-19 17:21:57 -0700 | [diff] [blame] | 1341 | // Note how dynamic layout's internal block indices get updated from Editor |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1342 | blockIndices[i] = blockIndex; |
| 1343 | searchStartIndex = blockIndex + 1; |
| 1344 | } |
| 1345 | |
| 1346 | DisplayList blockDisplayList = mTextDisplayLists[blockIndex]; |
| 1347 | if (blockDisplayList == null) { |
| 1348 | blockDisplayList = mTextDisplayLists[blockIndex] = |
| 1349 | mTextView.getHardwareRenderer().createDisplayList("Text " + blockIndex); |
| 1350 | } else { |
Romain Guy | 52036b1 | 2013-02-14 18:03:37 -0800 | [diff] [blame] | 1351 | if (blockIsInvalid) blockDisplayList.clear(); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1352 | } |
| 1353 | |
Sangkyu Lee | 955beb2 | 2012-12-10 15:47:00 +0900 | [diff] [blame] | 1354 | final boolean blockDisplayListIsInvalid = !blockDisplayList.isValid(); |
| 1355 | if (i >= indexFirstChangedBlock || blockDisplayListIsInvalid) { |
Gilles Debunne | 157aafc | 2012-04-19 17:21:57 -0700 | [diff] [blame] | 1356 | final int blockBeginLine = endOfPreviousBlock + 1; |
| 1357 | final int top = layout.getLineTop(blockBeginLine); |
| 1358 | final int bottom = layout.getLineBottom(blockEndLine); |
Gilles Debunne | fd5bc01 | 2012-04-23 16:21:35 -0700 | [diff] [blame] | 1359 | int left = 0; |
| 1360 | int right = mTextView.getWidth(); |
| 1361 | if (mTextView.getHorizontallyScrolling()) { |
| 1362 | float min = Float.MAX_VALUE; |
| 1363 | float max = Float.MIN_VALUE; |
| 1364 | for (int line = blockBeginLine; line <= blockEndLine; line++) { |
| 1365 | min = Math.min(min, layout.getLineLeft(line)); |
| 1366 | max = Math.max(max, layout.getLineRight(line)); |
| 1367 | } |
| 1368 | left = (int) min; |
| 1369 | right = (int) (max + 0.5f); |
| 1370 | } |
Gilles Debunne | 157aafc | 2012-04-19 17:21:57 -0700 | [diff] [blame] | 1371 | |
Sangkyu Lee | 955beb2 | 2012-12-10 15:47:00 +0900 | [diff] [blame] | 1372 | // Rebuild display list if it is invalid |
| 1373 | if (blockDisplayListIsInvalid) { |
Romain Guy | 52036b1 | 2013-02-14 18:03:37 -0800 | [diff] [blame] | 1374 | final HardwareCanvas hardwareCanvas = blockDisplayList.start( |
| 1375 | right - left, bottom - top); |
Sangkyu Lee | 955beb2 | 2012-12-10 15:47:00 +0900 | [diff] [blame] | 1376 | try { |
Romain Guy | 52036b1 | 2013-02-14 18:03:37 -0800 | [diff] [blame] | 1377 | // drawText is always relative to TextView's origin, this translation |
| 1378 | // brings this range of text back to the top left corner of the viewport |
Sangkyu Lee | 955beb2 | 2012-12-10 15:47:00 +0900 | [diff] [blame] | 1379 | hardwareCanvas.translate(-left, -top); |
| 1380 | layout.drawText(hardwareCanvas, blockBeginLine, blockEndLine); |
Romain Guy | 52036b1 | 2013-02-14 18:03:37 -0800 | [diff] [blame] | 1381 | // No need to untranslate, previous context is popped after |
| 1382 | // drawDisplayList |
Sangkyu Lee | 955beb2 | 2012-12-10 15:47:00 +0900 | [diff] [blame] | 1383 | } finally { |
Sangkyu Lee | 955beb2 | 2012-12-10 15:47:00 +0900 | [diff] [blame] | 1384 | blockDisplayList.end(); |
| 1385 | // Same as drawDisplayList below, handled by our TextView's parent |
Chet Haase | dd67159 | 2013-04-19 14:54:34 -0700 | [diff] [blame] | 1386 | blockDisplayList.setClipToBounds(false); |
Sangkyu Lee | 955beb2 | 2012-12-10 15:47:00 +0900 | [diff] [blame] | 1387 | } |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1388 | } |
Sangkyu Lee | 955beb2 | 2012-12-10 15:47:00 +0900 | [diff] [blame] | 1389 | |
| 1390 | // Valid disply list whose index is >= indexFirstChangedBlock |
| 1391 | // only needs to update its drawing location. |
| 1392 | blockDisplayList.setLeftTopRightBottom(left, top, right, bottom); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1393 | } |
| 1394 | |
Chet Haase | 1271e2c | 2012-04-20 09:54:27 -0700 | [diff] [blame] | 1395 | ((HardwareCanvas) canvas).drawDisplayList(blockDisplayList, null, |
Gilles Debunne | 157aafc | 2012-04-19 17:21:57 -0700 | [diff] [blame] | 1396 | 0 /* no child clipping, our TextView parent enforces it */); |
Gilles Debunne | fd5bc01 | 2012-04-23 16:21:35 -0700 | [diff] [blame] | 1397 | |
Gilles Debunne | 157aafc | 2012-04-19 17:21:57 -0700 | [diff] [blame] | 1398 | endOfPreviousBlock = blockEndLine; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1399 | } |
Sangkyu Lee | 955beb2 | 2012-12-10 15:47:00 +0900 | [diff] [blame] | 1400 | |
| 1401 | dynamicLayout.setIndexFirstChangedBlock(numberOfBlocks); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1402 | } else { |
| 1403 | // Boring layout is used for empty and hint text |
| 1404 | layout.drawText(canvas, firstLine, lastLine); |
| 1405 | } |
| 1406 | } |
| 1407 | |
| 1408 | private int getAvailableDisplayListIndex(int[] blockIndices, int numberOfBlocks, |
| 1409 | int searchStartIndex) { |
| 1410 | int length = mTextDisplayLists.length; |
| 1411 | for (int i = searchStartIndex; i < length; i++) { |
| 1412 | boolean blockIndexFound = false; |
| 1413 | for (int j = 0; j < numberOfBlocks; j++) { |
| 1414 | if (blockIndices[j] == i) { |
| 1415 | blockIndexFound = true; |
| 1416 | break; |
| 1417 | } |
| 1418 | } |
| 1419 | if (blockIndexFound) continue; |
| 1420 | return i; |
| 1421 | } |
| 1422 | |
| 1423 | // No available index found, the pool has to grow |
| 1424 | int newSize = ArrayUtils.idealIntArraySize(length + 1); |
| 1425 | DisplayList[] displayLists = new DisplayList[newSize]; |
| 1426 | System.arraycopy(mTextDisplayLists, 0, displayLists, 0, length); |
| 1427 | mTextDisplayLists = displayLists; |
| 1428 | return length; |
| 1429 | } |
| 1430 | |
| 1431 | private void drawCursor(Canvas canvas, int cursorOffsetVertical) { |
| 1432 | final boolean translate = cursorOffsetVertical != 0; |
| 1433 | if (translate) canvas.translate(0, cursorOffsetVertical); |
| 1434 | for (int i = 0; i < mCursorCount; i++) { |
| 1435 | mCursorDrawable[i].draw(canvas); |
| 1436 | } |
| 1437 | if (translate) canvas.translate(0, -cursorOffsetVertical); |
| 1438 | } |
| 1439 | |
Gilles Debunne | ebc86af | 2012-04-20 15:10:47 -0700 | [diff] [blame] | 1440 | /** |
| 1441 | * Invalidates all the sub-display lists that overlap the specified character range |
| 1442 | */ |
| 1443 | void invalidateTextDisplayList(Layout layout, int start, int end) { |
| 1444 | if (mTextDisplayLists != null && layout instanceof DynamicLayout) { |
| 1445 | final int firstLine = layout.getLineForOffset(start); |
| 1446 | final int lastLine = layout.getLineForOffset(end); |
| 1447 | |
| 1448 | DynamicLayout dynamicLayout = (DynamicLayout) layout; |
| 1449 | int[] blockEndLines = dynamicLayout.getBlockEndLines(); |
| 1450 | int[] blockIndices = dynamicLayout.getBlockIndices(); |
| 1451 | final int numberOfBlocks = dynamicLayout.getNumberOfBlocks(); |
| 1452 | |
| 1453 | int i = 0; |
| 1454 | // Skip the blocks before firstLine |
| 1455 | while (i < numberOfBlocks) { |
| 1456 | if (blockEndLines[i] >= firstLine) break; |
| 1457 | i++; |
| 1458 | } |
| 1459 | |
| 1460 | // Invalidate all subsequent blocks until lastLine is passed |
| 1461 | while (i < numberOfBlocks) { |
| 1462 | final int blockIndex = blockIndices[i]; |
| 1463 | if (blockIndex != DynamicLayout.INVALID_BLOCK_INDEX) { |
Romain Guy | 52036b1 | 2013-02-14 18:03:37 -0800 | [diff] [blame] | 1464 | mTextDisplayLists[blockIndex].clear(); |
Gilles Debunne | ebc86af | 2012-04-20 15:10:47 -0700 | [diff] [blame] | 1465 | } |
| 1466 | if (blockEndLines[i] >= lastLine) break; |
| 1467 | i++; |
| 1468 | } |
| 1469 | } |
| 1470 | } |
| 1471 | |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1472 | void invalidateTextDisplayList() { |
| 1473 | if (mTextDisplayLists != null) { |
| 1474 | for (int i = 0; i < mTextDisplayLists.length; i++) { |
Romain Guy | 52036b1 | 2013-02-14 18:03:37 -0800 | [diff] [blame] | 1475 | if (mTextDisplayLists[i] != null) mTextDisplayLists[i].clear(); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1476 | } |
| 1477 | } |
| 1478 | } |
| 1479 | |
| 1480 | void updateCursorsPositions() { |
| 1481 | if (mTextView.mCursorDrawableRes == 0) { |
| 1482 | mCursorCount = 0; |
| 1483 | return; |
| 1484 | } |
| 1485 | |
| 1486 | Layout layout = mTextView.getLayout(); |
Fabrice Di Meglio | 0ed59fa | 2012-05-29 20:32:51 -0700 | [diff] [blame] | 1487 | Layout hintLayout = mTextView.getHintLayout(); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1488 | final int offset = mTextView.getSelectionStart(); |
| 1489 | final int line = layout.getLineForOffset(offset); |
| 1490 | final int top = layout.getLineTop(line); |
| 1491 | final int bottom = layout.getLineTop(line + 1); |
| 1492 | |
| 1493 | mCursorCount = layout.isLevelBoundary(offset) ? 2 : 1; |
| 1494 | |
| 1495 | int middle = bottom; |
| 1496 | if (mCursorCount == 2) { |
| 1497 | // Similar to what is done in {@link Layout.#getCursorPath(int, Path, CharSequence)} |
| 1498 | middle = (top + bottom) >> 1; |
| 1499 | } |
| 1500 | |
Raph Levien | afe8e9b | 2012-12-19 16:09:32 -0800 | [diff] [blame] | 1501 | boolean clamped = layout.shouldClampCursor(line); |
| 1502 | updateCursorPosition(0, top, middle, |
| 1503 | getPrimaryHorizontal(layout, hintLayout, offset, clamped)); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1504 | |
| 1505 | if (mCursorCount == 2) { |
Raph Levien | afe8e9b | 2012-12-19 16:09:32 -0800 | [diff] [blame] | 1506 | updateCursorPosition(1, middle, bottom, |
| 1507 | layout.getSecondaryHorizontal(offset, clamped)); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1508 | } |
| 1509 | } |
| 1510 | |
Raph Levien | afe8e9b | 2012-12-19 16:09:32 -0800 | [diff] [blame] | 1511 | private float getPrimaryHorizontal(Layout layout, Layout hintLayout, int offset, |
| 1512 | boolean clamped) { |
Fabrice Di Meglio | 0ed59fa | 2012-05-29 20:32:51 -0700 | [diff] [blame] | 1513 | if (TextUtils.isEmpty(layout.getText()) && |
| 1514 | hintLayout != null && |
| 1515 | !TextUtils.isEmpty(hintLayout.getText())) { |
Raph Levien | afe8e9b | 2012-12-19 16:09:32 -0800 | [diff] [blame] | 1516 | return hintLayout.getPrimaryHorizontal(offset, clamped); |
Fabrice Di Meglio | 0ed59fa | 2012-05-29 20:32:51 -0700 | [diff] [blame] | 1517 | } else { |
Raph Levien | afe8e9b | 2012-12-19 16:09:32 -0800 | [diff] [blame] | 1518 | return layout.getPrimaryHorizontal(offset, clamped); |
Fabrice Di Meglio | 0ed59fa | 2012-05-29 20:32:51 -0700 | [diff] [blame] | 1519 | } |
| 1520 | } |
| 1521 | |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1522 | /** |
| 1523 | * @return true if the selection mode was actually started. |
| 1524 | */ |
| 1525 | boolean startSelectionActionMode() { |
| 1526 | if (mSelectionActionMode != null) { |
| 1527 | // Selection action mode is already started |
| 1528 | return false; |
| 1529 | } |
| 1530 | |
| 1531 | if (!canSelectText() || !mTextView.requestFocus()) { |
| 1532 | Log.w(TextView.LOG_TAG, |
| 1533 | "TextView does not support text selection. Action mode cancelled."); |
| 1534 | return false; |
| 1535 | } |
| 1536 | |
| 1537 | if (!mTextView.hasSelection()) { |
| 1538 | // There may already be a selection on device rotation |
| 1539 | if (!selectCurrentWord()) { |
| 1540 | // No word found under cursor or text selection not permitted. |
| 1541 | return false; |
| 1542 | } |
| 1543 | } |
| 1544 | |
| 1545 | boolean willExtract = extractedTextModeWillBeStarted(); |
| 1546 | |
| 1547 | // Do not start the action mode when extracted text will show up full screen, which would |
| 1548 | // immediately hide the newly created action bar and would be visually distracting. |
| 1549 | if (!willExtract) { |
| 1550 | ActionMode.Callback actionModeCallback = new SelectionActionModeCallback(); |
| 1551 | mSelectionActionMode = mTextView.startActionMode(actionModeCallback); |
| 1552 | } |
| 1553 | |
| 1554 | final boolean selectionStarted = mSelectionActionMode != null || willExtract; |
Gilles Debunne | 3473b2b | 2012-04-20 16:21:10 -0700 | [diff] [blame] | 1555 | if (selectionStarted && !mTextView.isTextSelectable() && mShowSoftInputOnFocus) { |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1556 | // Show the IME to be able to replace text, except when selecting non editable text. |
| 1557 | final InputMethodManager imm = InputMethodManager.peekInstance(); |
| 1558 | if (imm != null) { |
| 1559 | imm.showSoftInput(mTextView, 0, null); |
| 1560 | } |
| 1561 | } |
| 1562 | |
| 1563 | return selectionStarted; |
| 1564 | } |
| 1565 | |
| 1566 | private boolean extractedTextModeWillBeStarted() { |
| 1567 | if (!(mTextView instanceof ExtractEditText)) { |
| 1568 | final InputMethodManager imm = InputMethodManager.peekInstance(); |
| 1569 | return imm != null && imm.isFullscreenMode(); |
| 1570 | } |
| 1571 | return false; |
| 1572 | } |
| 1573 | |
| 1574 | /** |
| 1575 | * @return <code>true</code> if the cursor/current selection overlaps a {@link SuggestionSpan}. |
| 1576 | */ |
| 1577 | private boolean isCursorInsideSuggestionSpan() { |
| 1578 | CharSequence text = mTextView.getText(); |
| 1579 | if (!(text instanceof Spannable)) return false; |
| 1580 | |
| 1581 | SuggestionSpan[] suggestionSpans = ((Spannable) text).getSpans( |
| 1582 | mTextView.getSelectionStart(), mTextView.getSelectionEnd(), SuggestionSpan.class); |
| 1583 | return (suggestionSpans.length > 0); |
| 1584 | } |
| 1585 | |
| 1586 | /** |
| 1587 | * @return <code>true</code> if the cursor is inside an {@link SuggestionSpan} with |
| 1588 | * {@link SuggestionSpan#FLAG_EASY_CORRECT} set. |
| 1589 | */ |
| 1590 | private boolean isCursorInsideEasyCorrectionSpan() { |
| 1591 | Spannable spannable = (Spannable) mTextView.getText(); |
| 1592 | SuggestionSpan[] suggestionSpans = spannable.getSpans(mTextView.getSelectionStart(), |
| 1593 | mTextView.getSelectionEnd(), SuggestionSpan.class); |
| 1594 | for (int i = 0; i < suggestionSpans.length; i++) { |
| 1595 | if ((suggestionSpans[i].getFlags() & SuggestionSpan.FLAG_EASY_CORRECT) != 0) { |
| 1596 | return true; |
| 1597 | } |
| 1598 | } |
| 1599 | return false; |
| 1600 | } |
| 1601 | |
| 1602 | void onTouchUpEvent(MotionEvent event) { |
| 1603 | boolean selectAllGotFocus = mSelectAllOnFocus && mTextView.didTouchFocusSelect(); |
| 1604 | hideControllers(); |
| 1605 | CharSequence text = mTextView.getText(); |
| 1606 | if (!selectAllGotFocus && text.length() > 0) { |
| 1607 | // Move cursor |
| 1608 | final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); |
| 1609 | Selection.setSelection((Spannable) text, offset); |
| 1610 | if (mSpellChecker != null) { |
| 1611 | // When the cursor moves, the word that was typed may need spell check |
| 1612 | mSpellChecker.onSelectionChanged(); |
| 1613 | } |
| 1614 | if (!extractedTextModeWillBeStarted()) { |
| 1615 | if (isCursorInsideEasyCorrectionSpan()) { |
| 1616 | mShowSuggestionRunnable = new Runnable() { |
| 1617 | public void run() { |
| 1618 | showSuggestions(); |
| 1619 | } |
| 1620 | }; |
| 1621 | // removeCallbacks is performed on every touch |
| 1622 | mTextView.postDelayed(mShowSuggestionRunnable, |
| 1623 | ViewConfiguration.getDoubleTapTimeout()); |
| 1624 | } else if (hasInsertionController()) { |
| 1625 | getInsertionController().show(); |
| 1626 | } |
| 1627 | } |
| 1628 | } |
| 1629 | } |
| 1630 | |
| 1631 | protected void stopSelectionActionMode() { |
| 1632 | if (mSelectionActionMode != null) { |
| 1633 | // This will hide the mSelectionModifierCursorController |
| 1634 | mSelectionActionMode.finish(); |
| 1635 | } |
| 1636 | } |
| 1637 | |
| 1638 | /** |
| 1639 | * @return True if this view supports insertion handles. |
| 1640 | */ |
| 1641 | boolean hasInsertionController() { |
| 1642 | return mInsertionControllerEnabled; |
| 1643 | } |
| 1644 | |
| 1645 | /** |
| 1646 | * @return True if this view supports selection handles. |
| 1647 | */ |
| 1648 | boolean hasSelectionController() { |
| 1649 | return mSelectionControllerEnabled; |
| 1650 | } |
| 1651 | |
| 1652 | InsertionPointCursorController getInsertionController() { |
| 1653 | if (!mInsertionControllerEnabled) { |
| 1654 | return null; |
| 1655 | } |
| 1656 | |
| 1657 | if (mInsertionPointCursorController == null) { |
| 1658 | mInsertionPointCursorController = new InsertionPointCursorController(); |
| 1659 | |
| 1660 | final ViewTreeObserver observer = mTextView.getViewTreeObserver(); |
| 1661 | observer.addOnTouchModeChangeListener(mInsertionPointCursorController); |
| 1662 | } |
| 1663 | |
| 1664 | return mInsertionPointCursorController; |
| 1665 | } |
| 1666 | |
| 1667 | SelectionModifierCursorController getSelectionController() { |
| 1668 | if (!mSelectionControllerEnabled) { |
| 1669 | return null; |
| 1670 | } |
| 1671 | |
| 1672 | if (mSelectionModifierCursorController == null) { |
| 1673 | mSelectionModifierCursorController = new SelectionModifierCursorController(); |
| 1674 | |
| 1675 | final ViewTreeObserver observer = mTextView.getViewTreeObserver(); |
| 1676 | observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); |
| 1677 | } |
| 1678 | |
| 1679 | return mSelectionModifierCursorController; |
| 1680 | } |
| 1681 | |
| 1682 | private void updateCursorPosition(int cursorIndex, int top, int bottom, float horizontal) { |
| 1683 | if (mCursorDrawable[cursorIndex] == null) |
| 1684 | mCursorDrawable[cursorIndex] = mTextView.getResources().getDrawable( |
| 1685 | mTextView.mCursorDrawableRes); |
| 1686 | |
| 1687 | if (mTempRect == null) mTempRect = new Rect(); |
| 1688 | mCursorDrawable[cursorIndex].getPadding(mTempRect); |
| 1689 | final int width = mCursorDrawable[cursorIndex].getIntrinsicWidth(); |
| 1690 | horizontal = Math.max(0.5f, horizontal - 0.5f); |
| 1691 | final int left = (int) (horizontal) - mTempRect.left; |
| 1692 | mCursorDrawable[cursorIndex].setBounds(left, top - mTempRect.top, left + width, |
| 1693 | bottom + mTempRect.bottom); |
| 1694 | } |
| 1695 | |
| 1696 | /** |
| 1697 | * Called by the framework in response to a text auto-correction (such as fixing a typo using a |
| 1698 | * a dictionnary) from the current input method, provided by it calling |
| 1699 | * {@link InputConnection#commitCorrection} InputConnection.commitCorrection()}. The default |
| 1700 | * implementation flashes the background of the corrected word to provide feedback to the user. |
| 1701 | * |
| 1702 | * @param info The auto correct info about the text that was corrected. |
| 1703 | */ |
| 1704 | public void onCommitCorrection(CorrectionInfo info) { |
| 1705 | if (mCorrectionHighlighter == null) { |
| 1706 | mCorrectionHighlighter = new CorrectionHighlighter(); |
| 1707 | } else { |
| 1708 | mCorrectionHighlighter.invalidate(false); |
| 1709 | } |
| 1710 | |
| 1711 | mCorrectionHighlighter.highlight(info); |
| 1712 | } |
| 1713 | |
| 1714 | void showSuggestions() { |
| 1715 | if (mSuggestionsPopupWindow == null) { |
| 1716 | mSuggestionsPopupWindow = new SuggestionsPopupWindow(); |
| 1717 | } |
| 1718 | hideControllers(); |
| 1719 | mSuggestionsPopupWindow.show(); |
| 1720 | } |
| 1721 | |
| 1722 | boolean areSuggestionsShown() { |
| 1723 | return mSuggestionsPopupWindow != null && mSuggestionsPopupWindow.isShowing(); |
| 1724 | } |
| 1725 | |
| 1726 | void onScrollChanged() { |
Gilles Debunne | 157aafc | 2012-04-19 17:21:57 -0700 | [diff] [blame] | 1727 | if (mPositionListener != null) { |
| 1728 | mPositionListener.onScrollChanged(); |
| 1729 | } |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1730 | } |
| 1731 | |
| 1732 | /** |
| 1733 | * @return True when the TextView isFocused and has a valid zero-length selection (cursor). |
| 1734 | */ |
| 1735 | private boolean shouldBlink() { |
| 1736 | if (!isCursorVisible() || !mTextView.isFocused()) return false; |
| 1737 | |
| 1738 | final int start = mTextView.getSelectionStart(); |
| 1739 | if (start < 0) return false; |
| 1740 | |
| 1741 | final int end = mTextView.getSelectionEnd(); |
| 1742 | if (end < 0) return false; |
| 1743 | |
| 1744 | return start == end; |
| 1745 | } |
| 1746 | |
| 1747 | void makeBlink() { |
| 1748 | if (shouldBlink()) { |
| 1749 | mShowCursor = SystemClock.uptimeMillis(); |
| 1750 | if (mBlink == null) mBlink = new Blink(); |
| 1751 | mBlink.removeCallbacks(mBlink); |
| 1752 | mBlink.postAtTime(mBlink, mShowCursor + BLINK); |
| 1753 | } else { |
| 1754 | if (mBlink != null) mBlink.removeCallbacks(mBlink); |
| 1755 | } |
| 1756 | } |
| 1757 | |
| 1758 | private class Blink extends Handler implements Runnable { |
| 1759 | private boolean mCancelled; |
| 1760 | |
| 1761 | public void run() { |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1762 | if (mCancelled) { |
| 1763 | return; |
| 1764 | } |
| 1765 | |
| 1766 | removeCallbacks(Blink.this); |
| 1767 | |
| 1768 | if (shouldBlink()) { |
| 1769 | if (mTextView.getLayout() != null) { |
| 1770 | mTextView.invalidateCursorPath(); |
| 1771 | } |
| 1772 | |
| 1773 | postAtTime(this, SystemClock.uptimeMillis() + BLINK); |
| 1774 | } |
| 1775 | } |
| 1776 | |
| 1777 | void cancel() { |
| 1778 | if (!mCancelled) { |
| 1779 | removeCallbacks(Blink.this); |
| 1780 | mCancelled = true; |
| 1781 | } |
| 1782 | } |
| 1783 | |
| 1784 | void uncancel() { |
| 1785 | mCancelled = false; |
| 1786 | } |
| 1787 | } |
| 1788 | |
| 1789 | private DragShadowBuilder getTextThumbnailBuilder(CharSequence text) { |
| 1790 | TextView shadowView = (TextView) View.inflate(mTextView.getContext(), |
| 1791 | com.android.internal.R.layout.text_drag_thumbnail, null); |
| 1792 | |
| 1793 | if (shadowView == null) { |
| 1794 | throw new IllegalArgumentException("Unable to inflate text drag thumbnail"); |
| 1795 | } |
| 1796 | |
| 1797 | if (text.length() > DRAG_SHADOW_MAX_TEXT_LENGTH) { |
| 1798 | text = text.subSequence(0, DRAG_SHADOW_MAX_TEXT_LENGTH); |
| 1799 | } |
| 1800 | shadowView.setText(text); |
| 1801 | shadowView.setTextColor(mTextView.getTextColors()); |
| 1802 | |
| 1803 | shadowView.setTextAppearance(mTextView.getContext(), R.styleable.Theme_textAppearanceLarge); |
| 1804 | shadowView.setGravity(Gravity.CENTER); |
| 1805 | |
| 1806 | shadowView.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, |
| 1807 | ViewGroup.LayoutParams.WRAP_CONTENT)); |
| 1808 | |
| 1809 | final int size = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED); |
| 1810 | shadowView.measure(size, size); |
| 1811 | |
| 1812 | shadowView.layout(0, 0, shadowView.getMeasuredWidth(), shadowView.getMeasuredHeight()); |
| 1813 | shadowView.invalidate(); |
| 1814 | return new DragShadowBuilder(shadowView); |
| 1815 | } |
| 1816 | |
| 1817 | private static class DragLocalState { |
| 1818 | public TextView sourceTextView; |
| 1819 | public int start, end; |
| 1820 | |
| 1821 | public DragLocalState(TextView sourceTextView, int start, int end) { |
| 1822 | this.sourceTextView = sourceTextView; |
| 1823 | this.start = start; |
| 1824 | this.end = end; |
| 1825 | } |
| 1826 | } |
| 1827 | |
| 1828 | void onDrop(DragEvent event) { |
| 1829 | StringBuilder content = new StringBuilder(""); |
| 1830 | ClipData clipData = event.getClipData(); |
| 1831 | final int itemCount = clipData.getItemCount(); |
| 1832 | for (int i=0; i < itemCount; i++) { |
| 1833 | Item item = clipData.getItemAt(i); |
Dianne Hackborn | acb69bb | 2012-04-13 15:36:06 -0700 | [diff] [blame] | 1834 | content.append(item.coerceToStyledText(mTextView.getContext())); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1835 | } |
| 1836 | |
| 1837 | final int offset = mTextView.getOffsetForPosition(event.getX(), event.getY()); |
| 1838 | |
| 1839 | Object localState = event.getLocalState(); |
| 1840 | DragLocalState dragLocalState = null; |
| 1841 | if (localState instanceof DragLocalState) { |
| 1842 | dragLocalState = (DragLocalState) localState; |
| 1843 | } |
| 1844 | boolean dragDropIntoItself = dragLocalState != null && |
| 1845 | dragLocalState.sourceTextView == mTextView; |
| 1846 | |
| 1847 | if (dragDropIntoItself) { |
| 1848 | if (offset >= dragLocalState.start && offset < dragLocalState.end) { |
| 1849 | // A drop inside the original selection discards the drop. |
| 1850 | return; |
| 1851 | } |
| 1852 | } |
| 1853 | |
| 1854 | final int originalLength = mTextView.getText().length(); |
| 1855 | long minMax = mTextView.prepareSpacesAroundPaste(offset, offset, content); |
| 1856 | int min = TextUtils.unpackRangeStartFromLong(minMax); |
| 1857 | int max = TextUtils.unpackRangeEndFromLong(minMax); |
| 1858 | |
| 1859 | Selection.setSelection((Spannable) mTextView.getText(), max); |
| 1860 | mTextView.replaceText_internal(min, max, content); |
| 1861 | |
| 1862 | if (dragDropIntoItself) { |
| 1863 | int dragSourceStart = dragLocalState.start; |
| 1864 | int dragSourceEnd = dragLocalState.end; |
| 1865 | if (max <= dragSourceStart) { |
| 1866 | // Inserting text before selection has shifted positions |
| 1867 | final int shift = mTextView.getText().length() - originalLength; |
| 1868 | dragSourceStart += shift; |
| 1869 | dragSourceEnd += shift; |
| 1870 | } |
| 1871 | |
| 1872 | // Delete original selection |
| 1873 | mTextView.deleteText_internal(dragSourceStart, dragSourceEnd); |
| 1874 | |
| 1875 | // Make sure we do not leave two adjacent spaces. |
Victoria Lease | 9137320 | 2012-09-07 16:41:59 -0700 | [diff] [blame] | 1876 | final int prevCharIdx = Math.max(0, dragSourceStart - 1); |
| 1877 | final int nextCharIdx = Math.min(mTextView.getText().length(), dragSourceStart + 1); |
| 1878 | if (nextCharIdx > prevCharIdx + 1) { |
| 1879 | CharSequence t = mTextView.getTransformedText(prevCharIdx, nextCharIdx); |
| 1880 | if (Character.isSpaceChar(t.charAt(0)) && Character.isSpaceChar(t.charAt(1))) { |
| 1881 | mTextView.deleteText_internal(prevCharIdx, prevCharIdx + 1); |
| 1882 | } |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1883 | } |
| 1884 | } |
| 1885 | } |
| 1886 | |
Gilles Debunne | c62589c | 2012-04-12 14:50:23 -0700 | [diff] [blame] | 1887 | public void addSpanWatchers(Spannable text) { |
| 1888 | final int textLength = text.length(); |
| 1889 | |
| 1890 | if (mKeyListener != null) { |
| 1891 | text.setSpan(mKeyListener, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); |
| 1892 | } |
| 1893 | |
Jean Chalard | baf3094 | 2013-02-28 16:01:51 -0800 | [diff] [blame] | 1894 | if (mSpanController == null) { |
| 1895 | mSpanController = new SpanController(); |
Gilles Debunne | c62589c | 2012-04-12 14:50:23 -0700 | [diff] [blame] | 1896 | } |
Jean Chalard | baf3094 | 2013-02-28 16:01:51 -0800 | [diff] [blame] | 1897 | text.setSpan(mSpanController, 0, textLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE); |
Gilles Debunne | c62589c | 2012-04-12 14:50:23 -0700 | [diff] [blame] | 1898 | } |
| 1899 | |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1900 | /** |
| 1901 | * Controls the {@link EasyEditSpan} monitoring when it is added, and when the related |
| 1902 | * pop-up should be displayed. |
Dianne Hackborn | 3aa49b6 | 2013-04-26 16:39:17 -0700 | [diff] [blame] | 1903 | * Also monitors {@link Selection} to call back to the attached input method. |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1904 | */ |
Jean Chalard | baf3094 | 2013-02-28 16:01:51 -0800 | [diff] [blame] | 1905 | class SpanController implements SpanWatcher { |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1906 | |
| 1907 | private static final int DISPLAY_TIMEOUT_MS = 3000; // 3 secs |
| 1908 | |
| 1909 | private EasyEditPopupWindow mPopupWindow; |
| 1910 | |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1911 | private Runnable mHidePopup; |
| 1912 | |
Jean Chalard | baf3094 | 2013-02-28 16:01:51 -0800 | [diff] [blame] | 1913 | // This function is pure but inner classes can't have static functions |
| 1914 | private boolean isNonIntermediateSelectionSpan(final Spannable text, |
| 1915 | final Object span) { |
| 1916 | return (Selection.SELECTION_START == span || Selection.SELECTION_END == span) |
| 1917 | && (text.getSpanFlags(span) & Spanned.SPAN_INTERMEDIATE) == 0; |
| 1918 | } |
| 1919 | |
Gilles Debunne | c62589c | 2012-04-12 14:50:23 -0700 | [diff] [blame] | 1920 | @Override |
| 1921 | public void onSpanAdded(Spannable text, Object span, int start, int end) { |
Jean Chalard | baf3094 | 2013-02-28 16:01:51 -0800 | [diff] [blame] | 1922 | if (isNonIntermediateSelectionSpan(text, span)) { |
| 1923 | sendUpdateSelection(); |
| 1924 | } else if (span instanceof EasyEditSpan) { |
Gilles Debunne | c62589c | 2012-04-12 14:50:23 -0700 | [diff] [blame] | 1925 | if (mPopupWindow == null) { |
| 1926 | mPopupWindow = new EasyEditPopupWindow(); |
| 1927 | mHidePopup = new Runnable() { |
| 1928 | @Override |
| 1929 | public void run() { |
| 1930 | hide(); |
| 1931 | } |
| 1932 | }; |
| 1933 | } |
| 1934 | |
| 1935 | // Make sure there is only at most one EasyEditSpan in the text |
| 1936 | if (mPopupWindow.mEasyEditSpan != null) { |
Luca Zanolin | 1b15ba5 | 2013-02-20 14:31:37 +0000 | [diff] [blame] | 1937 | mPopupWindow.mEasyEditSpan.setDeleteEnabled(false); |
Gilles Debunne | c62589c | 2012-04-12 14:50:23 -0700 | [diff] [blame] | 1938 | } |
| 1939 | |
| 1940 | mPopupWindow.setEasyEditSpan((EasyEditSpan) span); |
Luca Zanolin | 1b15ba5 | 2013-02-20 14:31:37 +0000 | [diff] [blame] | 1941 | mPopupWindow.setOnDeleteListener(new EasyEditDeleteListener() { |
| 1942 | @Override |
| 1943 | public void onDeleteClick(EasyEditSpan span) { |
| 1944 | Editable editable = (Editable) mTextView.getText(); |
| 1945 | int start = editable.getSpanStart(span); |
| 1946 | int end = editable.getSpanEnd(span); |
| 1947 | if (start >= 0 && end >= 0) { |
Jean Chalard | baf3094 | 2013-02-28 16:01:51 -0800 | [diff] [blame] | 1948 | sendEasySpanNotification(EasyEditSpan.TEXT_DELETED, span); |
Luca Zanolin | 1b15ba5 | 2013-02-20 14:31:37 +0000 | [diff] [blame] | 1949 | mTextView.deleteText_internal(start, end); |
| 1950 | } |
| 1951 | editable.removeSpan(span); |
| 1952 | } |
| 1953 | }); |
Gilles Debunne | c62589c | 2012-04-12 14:50:23 -0700 | [diff] [blame] | 1954 | |
| 1955 | if (mTextView.getWindowVisibility() != View.VISIBLE) { |
| 1956 | // The window is not visible yet, ignore the text change. |
| 1957 | return; |
| 1958 | } |
| 1959 | |
| 1960 | if (mTextView.getLayout() == null) { |
| 1961 | // The view has not been laid out yet, ignore the text change |
| 1962 | return; |
| 1963 | } |
| 1964 | |
| 1965 | if (extractedTextModeWillBeStarted()) { |
| 1966 | // The input is in extract mode. Do not handle the easy edit in |
| 1967 | // the original TextView, as the ExtractEditText will do |
| 1968 | return; |
| 1969 | } |
| 1970 | |
| 1971 | mPopupWindow.show(); |
| 1972 | mTextView.removeCallbacks(mHidePopup); |
| 1973 | mTextView.postDelayed(mHidePopup, DISPLAY_TIMEOUT_MS); |
| 1974 | } |
| 1975 | } |
| 1976 | |
| 1977 | @Override |
| 1978 | public void onSpanRemoved(Spannable text, Object span, int start, int end) { |
Jean Chalard | baf3094 | 2013-02-28 16:01:51 -0800 | [diff] [blame] | 1979 | if (isNonIntermediateSelectionSpan(text, span)) { |
| 1980 | sendUpdateSelection(); |
| 1981 | } else if (mPopupWindow != null && span == mPopupWindow.mEasyEditSpan) { |
Gilles Debunne | c62589c | 2012-04-12 14:50:23 -0700 | [diff] [blame] | 1982 | hide(); |
| 1983 | } |
| 1984 | } |
| 1985 | |
| 1986 | @Override |
| 1987 | public void onSpanChanged(Spannable text, Object span, int previousStart, int previousEnd, |
| 1988 | int newStart, int newEnd) { |
Jean Chalard | baf3094 | 2013-02-28 16:01:51 -0800 | [diff] [blame] | 1989 | if (isNonIntermediateSelectionSpan(text, span)) { |
| 1990 | sendUpdateSelection(); |
| 1991 | } else if (mPopupWindow != null && span instanceof EasyEditSpan) { |
Luca Zanolin | 1b15ba5 | 2013-02-20 14:31:37 +0000 | [diff] [blame] | 1992 | EasyEditSpan easyEditSpan = (EasyEditSpan) span; |
Jean Chalard | baf3094 | 2013-02-28 16:01:51 -0800 | [diff] [blame] | 1993 | sendEasySpanNotification(EasyEditSpan.TEXT_MODIFIED, easyEditSpan); |
Luca Zanolin | 1b15ba5 | 2013-02-20 14:31:37 +0000 | [diff] [blame] | 1994 | text.removeSpan(easyEditSpan); |
Gilles Debunne | c62589c | 2012-04-12 14:50:23 -0700 | [diff] [blame] | 1995 | } |
| 1996 | } |
| 1997 | |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 1998 | public void hide() { |
| 1999 | if (mPopupWindow != null) { |
| 2000 | mPopupWindow.hide(); |
| 2001 | mTextView.removeCallbacks(mHidePopup); |
| 2002 | } |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2003 | } |
Luca Zanolin | 1b15ba5 | 2013-02-20 14:31:37 +0000 | [diff] [blame] | 2004 | |
Jean Chalard | baf3094 | 2013-02-28 16:01:51 -0800 | [diff] [blame] | 2005 | private void sendEasySpanNotification(int textChangedType, EasyEditSpan span) { |
Luca Zanolin | 1b15ba5 | 2013-02-20 14:31:37 +0000 | [diff] [blame] | 2006 | try { |
| 2007 | PendingIntent pendingIntent = span.getPendingIntent(); |
| 2008 | if (pendingIntent != null) { |
| 2009 | Intent intent = new Intent(); |
| 2010 | intent.putExtra(EasyEditSpan.EXTRA_TEXT_CHANGED_TYPE, textChangedType); |
| 2011 | pendingIntent.send(mTextView.getContext(), 0, intent); |
| 2012 | } |
| 2013 | } catch (CanceledException e) { |
| 2014 | // This should not happen, as we should try to send the intent only once. |
| 2015 | Log.w(TAG, "PendingIntent for notification cannot be sent", e); |
| 2016 | } |
| 2017 | } |
| 2018 | } |
| 2019 | |
| 2020 | /** |
| 2021 | * Listens for the delete event triggered by {@link EasyEditPopupWindow}. |
| 2022 | */ |
| 2023 | private interface EasyEditDeleteListener { |
| 2024 | |
| 2025 | /** |
| 2026 | * Clicks the delete pop-up. |
| 2027 | */ |
| 2028 | void onDeleteClick(EasyEditSpan span); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2029 | } |
| 2030 | |
| 2031 | /** |
| 2032 | * Displays the actions associated to an {@link EasyEditSpan}. The pop-up is controlled |
Dianne Hackborn | 3aa49b6 | 2013-04-26 16:39:17 -0700 | [diff] [blame] | 2033 | * by {@link SpanController}. |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2034 | */ |
| 2035 | private class EasyEditPopupWindow extends PinnedPopupWindow |
| 2036 | implements OnClickListener { |
| 2037 | private static final int POPUP_TEXT_LAYOUT = |
| 2038 | com.android.internal.R.layout.text_edit_action_popup_text; |
| 2039 | private TextView mDeleteTextView; |
| 2040 | private EasyEditSpan mEasyEditSpan; |
Luca Zanolin | 1b15ba5 | 2013-02-20 14:31:37 +0000 | [diff] [blame] | 2041 | private EasyEditDeleteListener mOnDeleteListener; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2042 | |
| 2043 | @Override |
| 2044 | protected void createPopupWindow() { |
| 2045 | mPopupWindow = new PopupWindow(mTextView.getContext(), null, |
| 2046 | com.android.internal.R.attr.textSelectHandleWindowStyle); |
| 2047 | mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); |
| 2048 | mPopupWindow.setClippingEnabled(true); |
| 2049 | } |
| 2050 | |
| 2051 | @Override |
| 2052 | protected void initContentView() { |
| 2053 | LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); |
| 2054 | linearLayout.setOrientation(LinearLayout.HORIZONTAL); |
| 2055 | mContentView = linearLayout; |
| 2056 | mContentView.setBackgroundResource( |
| 2057 | com.android.internal.R.drawable.text_edit_side_paste_window); |
| 2058 | |
| 2059 | LayoutInflater inflater = (LayoutInflater)mTextView.getContext(). |
| 2060 | getSystemService(Context.LAYOUT_INFLATER_SERVICE); |
| 2061 | |
| 2062 | LayoutParams wrapContent = new LayoutParams( |
| 2063 | ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); |
| 2064 | |
| 2065 | mDeleteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); |
| 2066 | mDeleteTextView.setLayoutParams(wrapContent); |
| 2067 | mDeleteTextView.setText(com.android.internal.R.string.delete); |
| 2068 | mDeleteTextView.setOnClickListener(this); |
| 2069 | mContentView.addView(mDeleteTextView); |
| 2070 | } |
| 2071 | |
Gilles Debunne | c62589c | 2012-04-12 14:50:23 -0700 | [diff] [blame] | 2072 | public void setEasyEditSpan(EasyEditSpan easyEditSpan) { |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2073 | mEasyEditSpan = easyEditSpan; |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2074 | } |
| 2075 | |
Luca Zanolin | 1b15ba5 | 2013-02-20 14:31:37 +0000 | [diff] [blame] | 2076 | private void setOnDeleteListener(EasyEditDeleteListener listener) { |
| 2077 | mOnDeleteListener = listener; |
| 2078 | } |
| 2079 | |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2080 | @Override |
| 2081 | public void onClick(View view) { |
Luca Zanolin | 1b15ba5 | 2013-02-20 14:31:37 +0000 | [diff] [blame] | 2082 | if (view == mDeleteTextView |
| 2083 | && mEasyEditSpan != null && mEasyEditSpan.isDeleteEnabled() |
| 2084 | && mOnDeleteListener != null) { |
| 2085 | mOnDeleteListener.onDeleteClick(mEasyEditSpan); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2086 | } |
| 2087 | } |
| 2088 | |
| 2089 | @Override |
Luca Zanolin | 1b15ba5 | 2013-02-20 14:31:37 +0000 | [diff] [blame] | 2090 | public void hide() { |
| 2091 | if (mEasyEditSpan != null) { |
| 2092 | mEasyEditSpan.setDeleteEnabled(false); |
| 2093 | } |
| 2094 | mOnDeleteListener = null; |
| 2095 | super.hide(); |
| 2096 | } |
| 2097 | |
| 2098 | @Override |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2099 | protected int getTextOffset() { |
| 2100 | // Place the pop-up at the end of the span |
| 2101 | Editable editable = (Editable) mTextView.getText(); |
| 2102 | return editable.getSpanEnd(mEasyEditSpan); |
| 2103 | } |
| 2104 | |
| 2105 | @Override |
| 2106 | protected int getVerticalLocalPosition(int line) { |
| 2107 | return mTextView.getLayout().getLineBottom(line); |
| 2108 | } |
| 2109 | |
| 2110 | @Override |
| 2111 | protected int clipVertically(int positionY) { |
| 2112 | // As we display the pop-up below the span, no vertical clipping is required. |
| 2113 | return positionY; |
| 2114 | } |
| 2115 | } |
| 2116 | |
| 2117 | private class PositionListener implements ViewTreeObserver.OnPreDrawListener { |
| 2118 | // 3 handles |
| 2119 | // 3 ActionPopup [replace, suggestion, easyedit] (suggestionsPopup first hides the others) |
| 2120 | private final int MAXIMUM_NUMBER_OF_LISTENERS = 6; |
| 2121 | private TextViewPositionListener[] mPositionListeners = |
| 2122 | new TextViewPositionListener[MAXIMUM_NUMBER_OF_LISTENERS]; |
| 2123 | private boolean mCanMove[] = new boolean[MAXIMUM_NUMBER_OF_LISTENERS]; |
| 2124 | private boolean mPositionHasChanged = true; |
| 2125 | // Absolute position of the TextView with respect to its parent window |
| 2126 | private int mPositionX, mPositionY; |
| 2127 | private int mNumberOfListeners; |
| 2128 | private boolean mScrollHasChanged; |
| 2129 | final int[] mTempCoords = new int[2]; |
| 2130 | |
| 2131 | public void addSubscriber(TextViewPositionListener positionListener, boolean canMove) { |
| 2132 | if (mNumberOfListeners == 0) { |
| 2133 | updatePosition(); |
| 2134 | ViewTreeObserver vto = mTextView.getViewTreeObserver(); |
| 2135 | vto.addOnPreDrawListener(this); |
| 2136 | } |
| 2137 | |
| 2138 | int emptySlotIndex = -1; |
| 2139 | for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { |
| 2140 | TextViewPositionListener listener = mPositionListeners[i]; |
| 2141 | if (listener == positionListener) { |
| 2142 | return; |
| 2143 | } else if (emptySlotIndex < 0 && listener == null) { |
| 2144 | emptySlotIndex = i; |
| 2145 | } |
| 2146 | } |
| 2147 | |
| 2148 | mPositionListeners[emptySlotIndex] = positionListener; |
| 2149 | mCanMove[emptySlotIndex] = canMove; |
| 2150 | mNumberOfListeners++; |
| 2151 | } |
| 2152 | |
| 2153 | public void removeSubscriber(TextViewPositionListener positionListener) { |
| 2154 | for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { |
| 2155 | if (mPositionListeners[i] == positionListener) { |
| 2156 | mPositionListeners[i] = null; |
| 2157 | mNumberOfListeners--; |
| 2158 | break; |
| 2159 | } |
| 2160 | } |
| 2161 | |
| 2162 | if (mNumberOfListeners == 0) { |
| 2163 | ViewTreeObserver vto = mTextView.getViewTreeObserver(); |
| 2164 | vto.removeOnPreDrawListener(this); |
| 2165 | } |
| 2166 | } |
| 2167 | |
| 2168 | public int getPositionX() { |
| 2169 | return mPositionX; |
| 2170 | } |
| 2171 | |
| 2172 | public int getPositionY() { |
| 2173 | return mPositionY; |
| 2174 | } |
| 2175 | |
| 2176 | @Override |
| 2177 | public boolean onPreDraw() { |
| 2178 | updatePosition(); |
| 2179 | |
| 2180 | for (int i = 0; i < MAXIMUM_NUMBER_OF_LISTENERS; i++) { |
| 2181 | if (mPositionHasChanged || mScrollHasChanged || mCanMove[i]) { |
| 2182 | TextViewPositionListener positionListener = mPositionListeners[i]; |
| 2183 | if (positionListener != null) { |
| 2184 | positionListener.updatePosition(mPositionX, mPositionY, |
| 2185 | mPositionHasChanged, mScrollHasChanged); |
| 2186 | } |
| 2187 | } |
| 2188 | } |
| 2189 | |
| 2190 | mScrollHasChanged = false; |
| 2191 | return true; |
| 2192 | } |
| 2193 | |
| 2194 | private void updatePosition() { |
| 2195 | mTextView.getLocationInWindow(mTempCoords); |
| 2196 | |
| 2197 | mPositionHasChanged = mTempCoords[0] != mPositionX || mTempCoords[1] != mPositionY; |
| 2198 | |
| 2199 | mPositionX = mTempCoords[0]; |
| 2200 | mPositionY = mTempCoords[1]; |
| 2201 | } |
| 2202 | |
| 2203 | public void onScrollChanged() { |
| 2204 | mScrollHasChanged = true; |
| 2205 | } |
| 2206 | } |
| 2207 | |
| 2208 | private abstract class PinnedPopupWindow implements TextViewPositionListener { |
| 2209 | protected PopupWindow mPopupWindow; |
| 2210 | protected ViewGroup mContentView; |
| 2211 | int mPositionX, mPositionY; |
| 2212 | |
| 2213 | protected abstract void createPopupWindow(); |
| 2214 | protected abstract void initContentView(); |
| 2215 | protected abstract int getTextOffset(); |
| 2216 | protected abstract int getVerticalLocalPosition(int line); |
| 2217 | protected abstract int clipVertically(int positionY); |
| 2218 | |
| 2219 | public PinnedPopupWindow() { |
| 2220 | createPopupWindow(); |
| 2221 | |
| 2222 | mPopupWindow.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); |
| 2223 | mPopupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); |
| 2224 | mPopupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); |
| 2225 | |
| 2226 | initContentView(); |
| 2227 | |
| 2228 | LayoutParams wrapContent = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, |
| 2229 | ViewGroup.LayoutParams.WRAP_CONTENT); |
| 2230 | mContentView.setLayoutParams(wrapContent); |
| 2231 | |
| 2232 | mPopupWindow.setContentView(mContentView); |
| 2233 | } |
| 2234 | |
| 2235 | public void show() { |
| 2236 | getPositionListener().addSubscriber(this, false /* offset is fixed */); |
| 2237 | |
| 2238 | computeLocalPosition(); |
| 2239 | |
| 2240 | final PositionListener positionListener = getPositionListener(); |
| 2241 | updatePosition(positionListener.getPositionX(), positionListener.getPositionY()); |
| 2242 | } |
| 2243 | |
| 2244 | protected void measureContent() { |
| 2245 | final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); |
| 2246 | mContentView.measure( |
| 2247 | View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, |
| 2248 | View.MeasureSpec.AT_MOST), |
| 2249 | View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, |
| 2250 | View.MeasureSpec.AT_MOST)); |
| 2251 | } |
| 2252 | |
| 2253 | /* The popup window will be horizontally centered on the getTextOffset() and vertically |
| 2254 | * positioned according to viewportToContentHorizontalOffset. |
| 2255 | * |
| 2256 | * This method assumes that mContentView has properly been measured from its content. */ |
| 2257 | private void computeLocalPosition() { |
| 2258 | measureContent(); |
| 2259 | final int width = mContentView.getMeasuredWidth(); |
| 2260 | final int offset = getTextOffset(); |
| 2261 | mPositionX = (int) (mTextView.getLayout().getPrimaryHorizontal(offset) - width / 2.0f); |
| 2262 | mPositionX += mTextView.viewportToContentHorizontalOffset(); |
| 2263 | |
| 2264 | final int line = mTextView.getLayout().getLineForOffset(offset); |
| 2265 | mPositionY = getVerticalLocalPosition(line); |
| 2266 | mPositionY += mTextView.viewportToContentVerticalOffset(); |
| 2267 | } |
| 2268 | |
| 2269 | private void updatePosition(int parentPositionX, int parentPositionY) { |
| 2270 | int positionX = parentPositionX + mPositionX; |
| 2271 | int positionY = parentPositionY + mPositionY; |
| 2272 | |
| 2273 | positionY = clipVertically(positionY); |
| 2274 | |
| 2275 | // Horizontal clipping |
| 2276 | final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); |
| 2277 | final int width = mContentView.getMeasuredWidth(); |
| 2278 | positionX = Math.min(displayMetrics.widthPixels - width, positionX); |
| 2279 | positionX = Math.max(0, positionX); |
| 2280 | |
| 2281 | if (isShowing()) { |
| 2282 | mPopupWindow.update(positionX, positionY, -1, -1); |
| 2283 | } else { |
| 2284 | mPopupWindow.showAtLocation(mTextView, Gravity.NO_GRAVITY, |
| 2285 | positionX, positionY); |
| 2286 | } |
| 2287 | } |
| 2288 | |
| 2289 | public void hide() { |
| 2290 | mPopupWindow.dismiss(); |
| 2291 | getPositionListener().removeSubscriber(this); |
| 2292 | } |
| 2293 | |
| 2294 | @Override |
| 2295 | public void updatePosition(int parentPositionX, int parentPositionY, |
| 2296 | boolean parentPositionChanged, boolean parentScrolled) { |
| 2297 | // Either parentPositionChanged or parentScrolled is true, check if still visible |
| 2298 | if (isShowing() && isOffsetVisible(getTextOffset())) { |
| 2299 | if (parentScrolled) computeLocalPosition(); |
| 2300 | updatePosition(parentPositionX, parentPositionY); |
| 2301 | } else { |
| 2302 | hide(); |
| 2303 | } |
| 2304 | } |
| 2305 | |
| 2306 | public boolean isShowing() { |
| 2307 | return mPopupWindow.isShowing(); |
| 2308 | } |
| 2309 | } |
| 2310 | |
| 2311 | private class SuggestionsPopupWindow extends PinnedPopupWindow implements OnItemClickListener { |
| 2312 | private static final int MAX_NUMBER_SUGGESTIONS = SuggestionSpan.SUGGESTIONS_MAX_SIZE; |
| 2313 | private static final int ADD_TO_DICTIONARY = -1; |
| 2314 | private static final int DELETE_TEXT = -2; |
| 2315 | private SuggestionInfo[] mSuggestionInfos; |
| 2316 | private int mNumberOfSuggestions; |
| 2317 | private boolean mCursorWasVisibleBeforeSuggestions; |
| 2318 | private boolean mIsShowingUp = false; |
| 2319 | private SuggestionAdapter mSuggestionsAdapter; |
| 2320 | private final Comparator<SuggestionSpan> mSuggestionSpanComparator; |
| 2321 | private final HashMap<SuggestionSpan, Integer> mSpansLengths; |
| 2322 | |
| 2323 | private class CustomPopupWindow extends PopupWindow { |
| 2324 | public CustomPopupWindow(Context context, int defStyle) { |
| 2325 | super(context, null, defStyle); |
| 2326 | } |
| 2327 | |
| 2328 | @Override |
| 2329 | public void dismiss() { |
| 2330 | super.dismiss(); |
| 2331 | |
| 2332 | getPositionListener().removeSubscriber(SuggestionsPopupWindow.this); |
| 2333 | |
| 2334 | // Safe cast since show() checks that mTextView.getText() is an Editable |
| 2335 | ((Spannable) mTextView.getText()).removeSpan(mSuggestionRangeSpan); |
| 2336 | |
| 2337 | mTextView.setCursorVisible(mCursorWasVisibleBeforeSuggestions); |
| 2338 | if (hasInsertionController()) { |
| 2339 | getInsertionController().show(); |
| 2340 | } |
| 2341 | } |
| 2342 | } |
| 2343 | |
| 2344 | public SuggestionsPopupWindow() { |
| 2345 | mCursorWasVisibleBeforeSuggestions = mCursorVisible; |
| 2346 | mSuggestionSpanComparator = new SuggestionSpanComparator(); |
| 2347 | mSpansLengths = new HashMap<SuggestionSpan, Integer>(); |
| 2348 | } |
| 2349 | |
| 2350 | @Override |
| 2351 | protected void createPopupWindow() { |
| 2352 | mPopupWindow = new CustomPopupWindow(mTextView.getContext(), |
| 2353 | com.android.internal.R.attr.textSuggestionsWindowStyle); |
| 2354 | mPopupWindow.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); |
| 2355 | mPopupWindow.setFocusable(true); |
| 2356 | mPopupWindow.setClippingEnabled(false); |
| 2357 | } |
| 2358 | |
| 2359 | @Override |
| 2360 | protected void initContentView() { |
| 2361 | ListView listView = new ListView(mTextView.getContext()); |
| 2362 | mSuggestionsAdapter = new SuggestionAdapter(); |
| 2363 | listView.setAdapter(mSuggestionsAdapter); |
| 2364 | listView.setOnItemClickListener(this); |
| 2365 | mContentView = listView; |
| 2366 | |
| 2367 | // Inflate the suggestion items once and for all. + 2 for add to dictionary and delete |
| 2368 | mSuggestionInfos = new SuggestionInfo[MAX_NUMBER_SUGGESTIONS + 2]; |
| 2369 | for (int i = 0; i < mSuggestionInfos.length; i++) { |
| 2370 | mSuggestionInfos[i] = new SuggestionInfo(); |
| 2371 | } |
| 2372 | } |
| 2373 | |
| 2374 | public boolean isShowingUp() { |
| 2375 | return mIsShowingUp; |
| 2376 | } |
| 2377 | |
| 2378 | public void onParentLostFocus() { |
| 2379 | mIsShowingUp = false; |
| 2380 | } |
| 2381 | |
| 2382 | private class SuggestionInfo { |
| 2383 | int suggestionStart, suggestionEnd; // range of actual suggestion within text |
| 2384 | SuggestionSpan suggestionSpan; // the SuggestionSpan that this TextView represents |
| 2385 | int suggestionIndex; // the index of this suggestion inside suggestionSpan |
| 2386 | SpannableStringBuilder text = new SpannableStringBuilder(); |
| 2387 | TextAppearanceSpan highlightSpan = new TextAppearanceSpan(mTextView.getContext(), |
| 2388 | android.R.style.TextAppearance_SuggestionHighlight); |
| 2389 | } |
| 2390 | |
| 2391 | private class SuggestionAdapter extends BaseAdapter { |
| 2392 | private LayoutInflater mInflater = (LayoutInflater) mTextView.getContext(). |
| 2393 | getSystemService(Context.LAYOUT_INFLATER_SERVICE); |
| 2394 | |
| 2395 | @Override |
| 2396 | public int getCount() { |
| 2397 | return mNumberOfSuggestions; |
| 2398 | } |
| 2399 | |
| 2400 | @Override |
| 2401 | public Object getItem(int position) { |
| 2402 | return mSuggestionInfos[position]; |
| 2403 | } |
| 2404 | |
| 2405 | @Override |
| 2406 | public long getItemId(int position) { |
| 2407 | return position; |
| 2408 | } |
| 2409 | |
| 2410 | @Override |
| 2411 | public View getView(int position, View convertView, ViewGroup parent) { |
| 2412 | TextView textView = (TextView) convertView; |
| 2413 | |
| 2414 | if (textView == null) { |
| 2415 | textView = (TextView) mInflater.inflate(mTextView.mTextEditSuggestionItemLayout, |
| 2416 | parent, false); |
| 2417 | } |
| 2418 | |
| 2419 | final SuggestionInfo suggestionInfo = mSuggestionInfos[position]; |
| 2420 | textView.setText(suggestionInfo.text); |
| 2421 | |
Gilles Debunne | 1daba18 | 2012-06-26 11:41:03 -0700 | [diff] [blame] | 2422 | if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY || |
| 2423 | suggestionInfo.suggestionIndex == DELETE_TEXT) { |
| 2424 | textView.setBackgroundColor(Color.TRANSPARENT); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2425 | } else { |
Gilles Debunne | 1daba18 | 2012-06-26 11:41:03 -0700 | [diff] [blame] | 2426 | textView.setBackgroundColor(Color.WHITE); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2427 | } |
| 2428 | |
| 2429 | return textView; |
| 2430 | } |
| 2431 | } |
| 2432 | |
| 2433 | private class SuggestionSpanComparator implements Comparator<SuggestionSpan> { |
| 2434 | public int compare(SuggestionSpan span1, SuggestionSpan span2) { |
| 2435 | final int flag1 = span1.getFlags(); |
| 2436 | final int flag2 = span2.getFlags(); |
| 2437 | if (flag1 != flag2) { |
| 2438 | // The order here should match what is used in updateDrawState |
| 2439 | final boolean easy1 = (flag1 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; |
| 2440 | final boolean easy2 = (flag2 & SuggestionSpan.FLAG_EASY_CORRECT) != 0; |
| 2441 | final boolean misspelled1 = (flag1 & SuggestionSpan.FLAG_MISSPELLED) != 0; |
| 2442 | final boolean misspelled2 = (flag2 & SuggestionSpan.FLAG_MISSPELLED) != 0; |
| 2443 | if (easy1 && !misspelled1) return -1; |
| 2444 | if (easy2 && !misspelled2) return 1; |
| 2445 | if (misspelled1) return -1; |
| 2446 | if (misspelled2) return 1; |
| 2447 | } |
| 2448 | |
| 2449 | return mSpansLengths.get(span1).intValue() - mSpansLengths.get(span2).intValue(); |
| 2450 | } |
| 2451 | } |
| 2452 | |
| 2453 | /** |
| 2454 | * Returns the suggestion spans that cover the current cursor position. The suggestion |
| 2455 | * spans are sorted according to the length of text that they are attached to. |
| 2456 | */ |
| 2457 | private SuggestionSpan[] getSuggestionSpans() { |
| 2458 | int pos = mTextView.getSelectionStart(); |
| 2459 | Spannable spannable = (Spannable) mTextView.getText(); |
| 2460 | SuggestionSpan[] suggestionSpans = spannable.getSpans(pos, pos, SuggestionSpan.class); |
| 2461 | |
| 2462 | mSpansLengths.clear(); |
| 2463 | for (SuggestionSpan suggestionSpan : suggestionSpans) { |
| 2464 | int start = spannable.getSpanStart(suggestionSpan); |
| 2465 | int end = spannable.getSpanEnd(suggestionSpan); |
| 2466 | mSpansLengths.put(suggestionSpan, Integer.valueOf(end - start)); |
| 2467 | } |
| 2468 | |
| 2469 | // The suggestions are sorted according to their types (easy correction first, then |
| 2470 | // misspelled) and to the length of the text that they cover (shorter first). |
| 2471 | Arrays.sort(suggestionSpans, mSuggestionSpanComparator); |
| 2472 | return suggestionSpans; |
| 2473 | } |
| 2474 | |
| 2475 | @Override |
| 2476 | public void show() { |
| 2477 | if (!(mTextView.getText() instanceof Editable)) return; |
| 2478 | |
| 2479 | if (updateSuggestions()) { |
| 2480 | mCursorWasVisibleBeforeSuggestions = mCursorVisible; |
| 2481 | mTextView.setCursorVisible(false); |
| 2482 | mIsShowingUp = true; |
| 2483 | super.show(); |
| 2484 | } |
| 2485 | } |
| 2486 | |
| 2487 | @Override |
| 2488 | protected void measureContent() { |
| 2489 | final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); |
| 2490 | final int horizontalMeasure = View.MeasureSpec.makeMeasureSpec( |
| 2491 | displayMetrics.widthPixels, View.MeasureSpec.AT_MOST); |
| 2492 | final int verticalMeasure = View.MeasureSpec.makeMeasureSpec( |
| 2493 | displayMetrics.heightPixels, View.MeasureSpec.AT_MOST); |
| 2494 | |
| 2495 | int width = 0; |
| 2496 | View view = null; |
| 2497 | for (int i = 0; i < mNumberOfSuggestions; i++) { |
| 2498 | view = mSuggestionsAdapter.getView(i, view, mContentView); |
| 2499 | view.getLayoutParams().width = LayoutParams.WRAP_CONTENT; |
| 2500 | view.measure(horizontalMeasure, verticalMeasure); |
| 2501 | width = Math.max(width, view.getMeasuredWidth()); |
| 2502 | } |
| 2503 | |
| 2504 | // Enforce the width based on actual text widths |
| 2505 | mContentView.measure( |
| 2506 | View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY), |
| 2507 | verticalMeasure); |
| 2508 | |
| 2509 | Drawable popupBackground = mPopupWindow.getBackground(); |
| 2510 | if (popupBackground != null) { |
| 2511 | if (mTempRect == null) mTempRect = new Rect(); |
| 2512 | popupBackground.getPadding(mTempRect); |
| 2513 | width += mTempRect.left + mTempRect.right; |
| 2514 | } |
| 2515 | mPopupWindow.setWidth(width); |
| 2516 | } |
| 2517 | |
| 2518 | @Override |
| 2519 | protected int getTextOffset() { |
| 2520 | return mTextView.getSelectionStart(); |
| 2521 | } |
| 2522 | |
| 2523 | @Override |
| 2524 | protected int getVerticalLocalPosition(int line) { |
| 2525 | return mTextView.getLayout().getLineBottom(line); |
| 2526 | } |
| 2527 | |
| 2528 | @Override |
| 2529 | protected int clipVertically(int positionY) { |
| 2530 | final int height = mContentView.getMeasuredHeight(); |
| 2531 | final DisplayMetrics displayMetrics = mTextView.getResources().getDisplayMetrics(); |
| 2532 | return Math.min(positionY, displayMetrics.heightPixels - height); |
| 2533 | } |
| 2534 | |
| 2535 | @Override |
| 2536 | public void hide() { |
| 2537 | super.hide(); |
| 2538 | } |
| 2539 | |
| 2540 | private boolean updateSuggestions() { |
| 2541 | Spannable spannable = (Spannable) mTextView.getText(); |
| 2542 | SuggestionSpan[] suggestionSpans = getSuggestionSpans(); |
| 2543 | |
| 2544 | final int nbSpans = suggestionSpans.length; |
| 2545 | // Suggestions are shown after a delay: the underlying spans may have been removed |
| 2546 | if (nbSpans == 0) return false; |
| 2547 | |
| 2548 | mNumberOfSuggestions = 0; |
| 2549 | int spanUnionStart = mTextView.getText().length(); |
| 2550 | int spanUnionEnd = 0; |
| 2551 | |
| 2552 | SuggestionSpan misspelledSpan = null; |
| 2553 | int underlineColor = 0; |
| 2554 | |
| 2555 | for (int spanIndex = 0; spanIndex < nbSpans; spanIndex++) { |
| 2556 | SuggestionSpan suggestionSpan = suggestionSpans[spanIndex]; |
| 2557 | final int spanStart = spannable.getSpanStart(suggestionSpan); |
| 2558 | final int spanEnd = spannable.getSpanEnd(suggestionSpan); |
| 2559 | spanUnionStart = Math.min(spanStart, spanUnionStart); |
| 2560 | spanUnionEnd = Math.max(spanEnd, spanUnionEnd); |
| 2561 | |
| 2562 | if ((suggestionSpan.getFlags() & SuggestionSpan.FLAG_MISSPELLED) != 0) { |
| 2563 | misspelledSpan = suggestionSpan; |
| 2564 | } |
| 2565 | |
| 2566 | // The first span dictates the background color of the highlighted text |
| 2567 | if (spanIndex == 0) underlineColor = suggestionSpan.getUnderlineColor(); |
| 2568 | |
| 2569 | String[] suggestions = suggestionSpan.getSuggestions(); |
| 2570 | int nbSuggestions = suggestions.length; |
| 2571 | for (int suggestionIndex = 0; suggestionIndex < nbSuggestions; suggestionIndex++) { |
| 2572 | String suggestion = suggestions[suggestionIndex]; |
| 2573 | |
| 2574 | boolean suggestionIsDuplicate = false; |
| 2575 | for (int i = 0; i < mNumberOfSuggestions; i++) { |
| 2576 | if (mSuggestionInfos[i].text.toString().equals(suggestion)) { |
| 2577 | SuggestionSpan otherSuggestionSpan = mSuggestionInfos[i].suggestionSpan; |
| 2578 | final int otherSpanStart = spannable.getSpanStart(otherSuggestionSpan); |
| 2579 | final int otherSpanEnd = spannable.getSpanEnd(otherSuggestionSpan); |
| 2580 | if (spanStart == otherSpanStart && spanEnd == otherSpanEnd) { |
| 2581 | suggestionIsDuplicate = true; |
| 2582 | break; |
| 2583 | } |
| 2584 | } |
| 2585 | } |
| 2586 | |
| 2587 | if (!suggestionIsDuplicate) { |
| 2588 | SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; |
| 2589 | suggestionInfo.suggestionSpan = suggestionSpan; |
| 2590 | suggestionInfo.suggestionIndex = suggestionIndex; |
| 2591 | suggestionInfo.text.replace(0, suggestionInfo.text.length(), suggestion); |
| 2592 | |
| 2593 | mNumberOfSuggestions++; |
| 2594 | |
| 2595 | if (mNumberOfSuggestions == MAX_NUMBER_SUGGESTIONS) { |
| 2596 | // Also end outer for loop |
| 2597 | spanIndex = nbSpans; |
| 2598 | break; |
| 2599 | } |
| 2600 | } |
| 2601 | } |
| 2602 | } |
| 2603 | |
| 2604 | for (int i = 0; i < mNumberOfSuggestions; i++) { |
| 2605 | highlightTextDifferences(mSuggestionInfos[i], spanUnionStart, spanUnionEnd); |
| 2606 | } |
| 2607 | |
| 2608 | // Add "Add to dictionary" item if there is a span with the misspelled flag |
| 2609 | if (misspelledSpan != null) { |
| 2610 | final int misspelledStart = spannable.getSpanStart(misspelledSpan); |
| 2611 | final int misspelledEnd = spannable.getSpanEnd(misspelledSpan); |
| 2612 | if (misspelledStart >= 0 && misspelledEnd > misspelledStart) { |
| 2613 | SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; |
| 2614 | suggestionInfo.suggestionSpan = misspelledSpan; |
| 2615 | suggestionInfo.suggestionIndex = ADD_TO_DICTIONARY; |
| 2616 | suggestionInfo.text.replace(0, suggestionInfo.text.length(), mTextView. |
| 2617 | getContext().getString(com.android.internal.R.string.addToDictionary)); |
| 2618 | suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0, |
| 2619 | Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); |
| 2620 | |
| 2621 | mNumberOfSuggestions++; |
| 2622 | } |
| 2623 | } |
| 2624 | |
| 2625 | // Delete item |
| 2626 | SuggestionInfo suggestionInfo = mSuggestionInfos[mNumberOfSuggestions]; |
| 2627 | suggestionInfo.suggestionSpan = null; |
| 2628 | suggestionInfo.suggestionIndex = DELETE_TEXT; |
| 2629 | suggestionInfo.text.replace(0, suggestionInfo.text.length(), |
| 2630 | mTextView.getContext().getString(com.android.internal.R.string.deleteText)); |
| 2631 | suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, 0, |
| 2632 | Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); |
| 2633 | mNumberOfSuggestions++; |
| 2634 | |
| 2635 | if (mSuggestionRangeSpan == null) mSuggestionRangeSpan = new SuggestionRangeSpan(); |
| 2636 | if (underlineColor == 0) { |
| 2637 | // Fallback on the default highlight color when the first span does not provide one |
| 2638 | mSuggestionRangeSpan.setBackgroundColor(mTextView.mHighlightColor); |
| 2639 | } else { |
| 2640 | final float BACKGROUND_TRANSPARENCY = 0.4f; |
| 2641 | final int newAlpha = (int) (Color.alpha(underlineColor) * BACKGROUND_TRANSPARENCY); |
| 2642 | mSuggestionRangeSpan.setBackgroundColor( |
| 2643 | (underlineColor & 0x00FFFFFF) + (newAlpha << 24)); |
| 2644 | } |
| 2645 | spannable.setSpan(mSuggestionRangeSpan, spanUnionStart, spanUnionEnd, |
| 2646 | Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); |
| 2647 | |
| 2648 | mSuggestionsAdapter.notifyDataSetChanged(); |
| 2649 | return true; |
| 2650 | } |
| 2651 | |
| 2652 | private void highlightTextDifferences(SuggestionInfo suggestionInfo, int unionStart, |
| 2653 | int unionEnd) { |
| 2654 | final Spannable text = (Spannable) mTextView.getText(); |
| 2655 | final int spanStart = text.getSpanStart(suggestionInfo.suggestionSpan); |
| 2656 | final int spanEnd = text.getSpanEnd(suggestionInfo.suggestionSpan); |
| 2657 | |
| 2658 | // Adjust the start/end of the suggestion span |
| 2659 | suggestionInfo.suggestionStart = spanStart - unionStart; |
| 2660 | suggestionInfo.suggestionEnd = suggestionInfo.suggestionStart |
| 2661 | + suggestionInfo.text.length(); |
| 2662 | |
| 2663 | suggestionInfo.text.setSpan(suggestionInfo.highlightSpan, 0, |
| 2664 | suggestionInfo.text.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); |
| 2665 | |
| 2666 | // Add the text before and after the span. |
| 2667 | final String textAsString = text.toString(); |
| 2668 | suggestionInfo.text.insert(0, textAsString.substring(unionStart, spanStart)); |
| 2669 | suggestionInfo.text.append(textAsString.substring(spanEnd, unionEnd)); |
| 2670 | } |
| 2671 | |
| 2672 | @Override |
| 2673 | public void onItemClick(AdapterView<?> parent, View view, int position, long id) { |
| 2674 | Editable editable = (Editable) mTextView.getText(); |
| 2675 | SuggestionInfo suggestionInfo = mSuggestionInfos[position]; |
| 2676 | |
| 2677 | if (suggestionInfo.suggestionIndex == DELETE_TEXT) { |
| 2678 | final int spanUnionStart = editable.getSpanStart(mSuggestionRangeSpan); |
| 2679 | int spanUnionEnd = editable.getSpanEnd(mSuggestionRangeSpan); |
| 2680 | if (spanUnionStart >= 0 && spanUnionEnd > spanUnionStart) { |
| 2681 | // Do not leave two adjacent spaces after deletion, or one at beginning of text |
| 2682 | if (spanUnionEnd < editable.length() && |
| 2683 | Character.isSpaceChar(editable.charAt(spanUnionEnd)) && |
| 2684 | (spanUnionStart == 0 || |
| 2685 | Character.isSpaceChar(editable.charAt(spanUnionStart - 1)))) { |
| 2686 | spanUnionEnd = spanUnionEnd + 1; |
| 2687 | } |
| 2688 | mTextView.deleteText_internal(spanUnionStart, spanUnionEnd); |
| 2689 | } |
| 2690 | hide(); |
| 2691 | return; |
| 2692 | } |
| 2693 | |
| 2694 | final int spanStart = editable.getSpanStart(suggestionInfo.suggestionSpan); |
| 2695 | final int spanEnd = editable.getSpanEnd(suggestionInfo.suggestionSpan); |
| 2696 | if (spanStart < 0 || spanEnd <= spanStart) { |
| 2697 | // Span has been removed |
| 2698 | hide(); |
| 2699 | return; |
| 2700 | } |
| 2701 | |
| 2702 | final String originalText = editable.toString().substring(spanStart, spanEnd); |
| 2703 | |
| 2704 | if (suggestionInfo.suggestionIndex == ADD_TO_DICTIONARY) { |
| 2705 | Intent intent = new Intent(Settings.ACTION_USER_DICTIONARY_INSERT); |
| 2706 | intent.putExtra("word", originalText); |
| 2707 | intent.putExtra("locale", mTextView.getTextServicesLocale().toString()); |
Satoshi Kataoka | 0e3849a | 2012-12-13 14:37:19 +0900 | [diff] [blame] | 2708 | // Put a listener to replace the original text with a word which the user |
| 2709 | // modified in a user dictionary dialog. |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2710 | intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NEW_TASK); |
| 2711 | mTextView.getContext().startActivity(intent); |
| 2712 | // There is no way to know if the word was indeed added. Re-check. |
| 2713 | // TODO The ExtractEditText should remove the span in the original text instead |
| 2714 | editable.removeSpan(suggestionInfo.suggestionSpan); |
Gilles Debunne | 2eb70fb | 2012-04-18 17:57:45 -0700 | [diff] [blame] | 2715 | Selection.setSelection(editable, spanEnd); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2716 | updateSpellCheckSpans(spanStart, spanEnd, false); |
| 2717 | } else { |
| 2718 | // SuggestionSpans are removed by replace: save them before |
| 2719 | SuggestionSpan[] suggestionSpans = editable.getSpans(spanStart, spanEnd, |
| 2720 | SuggestionSpan.class); |
| 2721 | final int length = suggestionSpans.length; |
| 2722 | int[] suggestionSpansStarts = new int[length]; |
| 2723 | int[] suggestionSpansEnds = new int[length]; |
| 2724 | int[] suggestionSpansFlags = new int[length]; |
| 2725 | for (int i = 0; i < length; i++) { |
| 2726 | final SuggestionSpan suggestionSpan = suggestionSpans[i]; |
| 2727 | suggestionSpansStarts[i] = editable.getSpanStart(suggestionSpan); |
| 2728 | suggestionSpansEnds[i] = editable.getSpanEnd(suggestionSpan); |
| 2729 | suggestionSpansFlags[i] = editable.getSpanFlags(suggestionSpan); |
| 2730 | |
| 2731 | // Remove potential misspelled flags |
| 2732 | int suggestionSpanFlags = suggestionSpan.getFlags(); |
| 2733 | if ((suggestionSpanFlags & SuggestionSpan.FLAG_MISSPELLED) > 0) { |
| 2734 | suggestionSpanFlags &= ~SuggestionSpan.FLAG_MISSPELLED; |
| 2735 | suggestionSpanFlags &= ~SuggestionSpan.FLAG_EASY_CORRECT; |
| 2736 | suggestionSpan.setFlags(suggestionSpanFlags); |
| 2737 | } |
| 2738 | } |
| 2739 | |
| 2740 | final int suggestionStart = suggestionInfo.suggestionStart; |
| 2741 | final int suggestionEnd = suggestionInfo.suggestionEnd; |
| 2742 | final String suggestion = suggestionInfo.text.subSequence( |
| 2743 | suggestionStart, suggestionEnd).toString(); |
| 2744 | mTextView.replaceText_internal(spanStart, spanEnd, suggestion); |
| 2745 | |
Luca Zanolin | 0c96b81f | 2012-08-29 11:33:12 +0100 | [diff] [blame] | 2746 | // Notify source IME of the suggestion pick. Do this before |
| 2747 | // swaping texts. |
| 2748 | suggestionInfo.suggestionSpan.notifySelection( |
| 2749 | mTextView.getContext(), originalText, suggestionInfo.suggestionIndex); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2750 | |
| 2751 | // Swap text content between actual text and Suggestion span |
| 2752 | String[] suggestions = suggestionInfo.suggestionSpan.getSuggestions(); |
| 2753 | suggestions[suggestionInfo.suggestionIndex] = originalText; |
| 2754 | |
| 2755 | // Restore previous SuggestionSpans |
| 2756 | final int lengthDifference = suggestion.length() - (spanEnd - spanStart); |
| 2757 | for (int i = 0; i < length; i++) { |
| 2758 | // Only spans that include the modified region make sense after replacement |
| 2759 | // Spans partially included in the replaced region are removed, there is no |
| 2760 | // way to assign them a valid range after replacement |
| 2761 | if (suggestionSpansStarts[i] <= spanStart && |
| 2762 | suggestionSpansEnds[i] >= spanEnd) { |
| 2763 | mTextView.setSpan_internal(suggestionSpans[i], suggestionSpansStarts[i], |
| 2764 | suggestionSpansEnds[i] + lengthDifference, suggestionSpansFlags[i]); |
| 2765 | } |
| 2766 | } |
| 2767 | |
| 2768 | // Move cursor at the end of the replaced word |
| 2769 | final int newCursorPosition = spanEnd + lengthDifference; |
| 2770 | mTextView.setCursorPosition_internal(newCursorPosition, newCursorPosition); |
| 2771 | } |
| 2772 | |
| 2773 | hide(); |
| 2774 | } |
| 2775 | } |
| 2776 | |
| 2777 | /** |
| 2778 | * An ActionMode Callback class that is used to provide actions while in text selection mode. |
| 2779 | * |
| 2780 | * The default callback provides a subset of Select All, Cut, Copy and Paste actions, depending |
| 2781 | * on which of these this TextView supports. |
| 2782 | */ |
| 2783 | private class SelectionActionModeCallback implements ActionMode.Callback { |
| 2784 | |
| 2785 | @Override |
| 2786 | public boolean onCreateActionMode(ActionMode mode, Menu menu) { |
| 2787 | TypedArray styledAttributes = mTextView.getContext().obtainStyledAttributes( |
| 2788 | com.android.internal.R.styleable.SelectionModeDrawables); |
| 2789 | |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2790 | mode.setTitle(mTextView.getContext().getString( |
| 2791 | com.android.internal.R.string.textSelectionCABTitle)); |
| 2792 | mode.setSubtitle(null); |
| 2793 | mode.setTitleOptionalHint(true); |
| 2794 | |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2795 | menu.add(0, TextView.ID_SELECT_ALL, 0, com.android.internal.R.string.selectAll). |
Sungmin Choi | f036920 | 2013-01-25 21:39:01 +0900 | [diff] [blame] | 2796 | setIcon(styledAttributes.getResourceId( |
| 2797 | R.styleable.SelectionModeDrawables_actionModeSelectAllDrawable, 0)). |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2798 | setAlphabeticShortcut('a'). |
| 2799 | setShowAsAction( |
| 2800 | MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); |
| 2801 | |
| 2802 | if (mTextView.canCut()) { |
| 2803 | menu.add(0, TextView.ID_CUT, 0, com.android.internal.R.string.cut). |
| 2804 | setIcon(styledAttributes.getResourceId( |
| 2805 | R.styleable.SelectionModeDrawables_actionModeCutDrawable, 0)). |
| 2806 | setAlphabeticShortcut('x'). |
| 2807 | setShowAsAction( |
| 2808 | MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); |
| 2809 | } |
| 2810 | |
| 2811 | if (mTextView.canCopy()) { |
| 2812 | menu.add(0, TextView.ID_COPY, 0, com.android.internal.R.string.copy). |
| 2813 | setIcon(styledAttributes.getResourceId( |
| 2814 | R.styleable.SelectionModeDrawables_actionModeCopyDrawable, 0)). |
| 2815 | setAlphabeticShortcut('c'). |
| 2816 | setShowAsAction( |
| 2817 | MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); |
| 2818 | } |
| 2819 | |
| 2820 | if (mTextView.canPaste()) { |
| 2821 | menu.add(0, TextView.ID_PASTE, 0, com.android.internal.R.string.paste). |
| 2822 | setIcon(styledAttributes.getResourceId( |
| 2823 | R.styleable.SelectionModeDrawables_actionModePasteDrawable, 0)). |
| 2824 | setAlphabeticShortcut('v'). |
| 2825 | setShowAsAction( |
| 2826 | MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT); |
| 2827 | } |
| 2828 | |
| 2829 | styledAttributes.recycle(); |
| 2830 | |
| 2831 | if (mCustomSelectionActionModeCallback != null) { |
| 2832 | if (!mCustomSelectionActionModeCallback.onCreateActionMode(mode, menu)) { |
| 2833 | // The custom mode can choose to cancel the action mode |
| 2834 | return false; |
| 2835 | } |
| 2836 | } |
| 2837 | |
| 2838 | if (menu.hasVisibleItems() || mode.getCustomView() != null) { |
| 2839 | getSelectionController().show(); |
Adam Powell | 057a585 | 2012-05-11 10:28:38 -0700 | [diff] [blame] | 2840 | mTextView.setHasTransientState(true); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2841 | return true; |
| 2842 | } else { |
| 2843 | return false; |
| 2844 | } |
| 2845 | } |
| 2846 | |
| 2847 | @Override |
| 2848 | public boolean onPrepareActionMode(ActionMode mode, Menu menu) { |
| 2849 | if (mCustomSelectionActionModeCallback != null) { |
| 2850 | return mCustomSelectionActionModeCallback.onPrepareActionMode(mode, menu); |
| 2851 | } |
| 2852 | return true; |
| 2853 | } |
| 2854 | |
| 2855 | @Override |
| 2856 | public boolean onActionItemClicked(ActionMode mode, MenuItem item) { |
| 2857 | if (mCustomSelectionActionModeCallback != null && |
| 2858 | mCustomSelectionActionModeCallback.onActionItemClicked(mode, item)) { |
| 2859 | return true; |
| 2860 | } |
| 2861 | return mTextView.onTextContextMenuItem(item.getItemId()); |
| 2862 | } |
| 2863 | |
| 2864 | @Override |
| 2865 | public void onDestroyActionMode(ActionMode mode) { |
| 2866 | if (mCustomSelectionActionModeCallback != null) { |
| 2867 | mCustomSelectionActionModeCallback.onDestroyActionMode(mode); |
| 2868 | } |
Adam Powell | 057a585 | 2012-05-11 10:28:38 -0700 | [diff] [blame] | 2869 | |
| 2870 | /* |
| 2871 | * If we're ending this mode because we're detaching from a window, |
| 2872 | * we still have selection state to preserve. Don't clear it, we'll |
| 2873 | * bring back the selection mode when (if) we get reattached. |
| 2874 | */ |
| 2875 | if (!mPreserveDetachedSelection) { |
| 2876 | Selection.setSelection((Spannable) mTextView.getText(), |
| 2877 | mTextView.getSelectionEnd()); |
| 2878 | mTextView.setHasTransientState(false); |
| 2879 | } |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 2880 | |
| 2881 | if (mSelectionModifierCursorController != null) { |
| 2882 | mSelectionModifierCursorController.hide(); |
| 2883 | } |
| 2884 | |
| 2885 | mSelectionActionMode = null; |
| 2886 | } |
| 2887 | } |
| 2888 | |
| 2889 | private class ActionPopupWindow extends PinnedPopupWindow implements OnClickListener { |
| 2890 | private static final int POPUP_TEXT_LAYOUT = |
| 2891 | com.android.internal.R.layout.text_edit_action_popup_text; |
| 2892 | private TextView mPasteTextView; |
| 2893 | private TextView mReplaceTextView; |
| 2894 | |
| 2895 | @Override |
| 2896 | protected void createPopupWindow() { |
| 2897 | mPopupWindow = new PopupWindow(mTextView.getContext(), null, |
| 2898 | com.android.internal.R.attr.textSelectHandleWindowStyle); |
| 2899 | mPopupWindow.setClippingEnabled(true); |
| 2900 | } |
| 2901 | |
| 2902 | @Override |
| 2903 | protected void initContentView() { |
| 2904 | LinearLayout linearLayout = new LinearLayout(mTextView.getContext()); |
| 2905 | linearLayout.setOrientation(LinearLayout.HORIZONTAL); |
| 2906 | mContentView = linearLayout; |
| 2907 | mContentView.setBackgroundResource( |
| 2908 | com.android.internal.R.drawable.text_edit_paste_window); |
| 2909 | |
| 2910 | LayoutInflater inflater = (LayoutInflater) mTextView.getContext(). |
| 2911 | getSystemService(Context.LAYOUT_INFLATER_SERVICE); |
| 2912 | |
| 2913 | LayoutParams wrapContent = new LayoutParams( |
| 2914 | ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); |
| 2915 | |
| 2916 | mPasteTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); |
| 2917 | mPasteTextView.setLayoutParams(wrapContent); |
| 2918 | mContentView.addView(mPasteTextView); |
| 2919 | mPasteTextView.setText(com.android.internal.R.string.paste); |
| 2920 | mPasteTextView.setOnClickListener(this); |
| 2921 | |
| 2922 | mReplaceTextView = (TextView) inflater.inflate(POPUP_TEXT_LAYOUT, null); |
| 2923 | mReplaceTextView.setLayoutParams(wrapContent); |
| 2924 | mContentView.addView(mReplaceTextView); |
| 2925 | mReplaceTextView.setText(com.android.internal.R.string.replace); |
| 2926 | mReplaceTextView.setOnClickListener(this); |
| 2927 | } |
| 2928 | |
| 2929 | @Override |
| 2930 | public void show() { |
| 2931 | boolean canPaste = mTextView.canPaste(); |
| 2932 | boolean canSuggest = mTextView.isSuggestionsEnabled() && isCursorInsideSuggestionSpan(); |
| 2933 | mPasteTextView.setVisibility(canPaste ? View.VISIBLE : View.GONE); |
| 2934 | mReplaceTextView.setVisibility(canSuggest ? View.VISIBLE : View.GONE); |
| 2935 | |
| 2936 | if (!canPaste && !canSuggest) return; |
| 2937 | |
| 2938 | super.show(); |
| 2939 | } |
| 2940 | |
| 2941 | @Override |
| 2942 | public void onClick(View view) { |
| 2943 | if (view == mPasteTextView && mTextView.canPaste()) { |
| 2944 | mTextView.onTextContextMenuItem(TextView.ID_PASTE); |
| 2945 | hide(); |
| 2946 | } else if (view == mReplaceTextView) { |
| 2947 | int middle = (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; |
| 2948 | stopSelectionActionMode(); |
| 2949 | Selection.setSelection((Spannable) mTextView.getText(), middle); |
| 2950 | showSuggestions(); |
| 2951 | } |
| 2952 | } |
| 2953 | |
| 2954 | @Override |
| 2955 | protected int getTextOffset() { |
| 2956 | return (mTextView.getSelectionStart() + mTextView.getSelectionEnd()) / 2; |
| 2957 | } |
| 2958 | |
| 2959 | @Override |
| 2960 | protected int getVerticalLocalPosition(int line) { |
| 2961 | return mTextView.getLayout().getLineTop(line) - mContentView.getMeasuredHeight(); |
| 2962 | } |
| 2963 | |
| 2964 | @Override |
| 2965 | protected int clipVertically(int positionY) { |
| 2966 | if (positionY < 0) { |
| 2967 | final int offset = getTextOffset(); |
| 2968 | final Layout layout = mTextView.getLayout(); |
| 2969 | final int line = layout.getLineForOffset(offset); |
| 2970 | positionY += layout.getLineBottom(line) - layout.getLineTop(line); |
| 2971 | positionY += mContentView.getMeasuredHeight(); |
| 2972 | |
| 2973 | // Assumes insertion and selection handles share the same height |
| 2974 | final Drawable handle = mTextView.getResources().getDrawable( |
| 2975 | mTextView.mTextSelectHandleRes); |
| 2976 | positionY += handle.getIntrinsicHeight(); |
| 2977 | } |
| 2978 | |
| 2979 | return positionY; |
| 2980 | } |
| 2981 | } |
| 2982 | |
| 2983 | private abstract class HandleView extends View implements TextViewPositionListener { |
| 2984 | protected Drawable mDrawable; |
| 2985 | protected Drawable mDrawableLtr; |
| 2986 | protected Drawable mDrawableRtl; |
| 2987 | private final PopupWindow mContainer; |
| 2988 | // Position with respect to the parent TextView |
| 2989 | private int mPositionX, mPositionY; |
| 2990 | private boolean mIsDragging; |
| 2991 | // Offset from touch position to mPosition |
| 2992 | private float mTouchToWindowOffsetX, mTouchToWindowOffsetY; |
| 2993 | protected int mHotspotX; |
| 2994 | // Offsets the hotspot point up, so that cursor is not hidden by the finger when moving up |
| 2995 | private float mTouchOffsetY; |
| 2996 | // Where the touch position should be on the handle to ensure a maximum cursor visibility |
| 2997 | private float mIdealVerticalOffset; |
| 2998 | // Parent's (TextView) previous position in window |
| 2999 | private int mLastParentX, mLastParentY; |
| 3000 | // Transient action popup window for Paste and Replace actions |
| 3001 | protected ActionPopupWindow mActionPopupWindow; |
| 3002 | // Previous text character offset |
| 3003 | private int mPreviousOffset = -1; |
| 3004 | // Previous text character offset |
| 3005 | private boolean mPositionHasChanged = true; |
| 3006 | // Used to delay the appearance of the action popup window |
| 3007 | private Runnable mActionPopupShower; |
| 3008 | |
| 3009 | public HandleView(Drawable drawableLtr, Drawable drawableRtl) { |
| 3010 | super(mTextView.getContext()); |
| 3011 | mContainer = new PopupWindow(mTextView.getContext(), null, |
| 3012 | com.android.internal.R.attr.textSelectHandleWindowStyle); |
| 3013 | mContainer.setSplitTouchEnabled(true); |
| 3014 | mContainer.setClippingEnabled(false); |
| 3015 | mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); |
| 3016 | mContainer.setContentView(this); |
| 3017 | |
| 3018 | mDrawableLtr = drawableLtr; |
| 3019 | mDrawableRtl = drawableRtl; |
| 3020 | |
| 3021 | updateDrawable(); |
| 3022 | |
| 3023 | final int handleHeight = mDrawable.getIntrinsicHeight(); |
| 3024 | mTouchOffsetY = -0.3f * handleHeight; |
| 3025 | mIdealVerticalOffset = 0.7f * handleHeight; |
| 3026 | } |
| 3027 | |
| 3028 | protected void updateDrawable() { |
| 3029 | final int offset = getCurrentCursorOffset(); |
| 3030 | final boolean isRtlCharAtOffset = mTextView.getLayout().isRtlCharAt(offset); |
| 3031 | mDrawable = isRtlCharAtOffset ? mDrawableRtl : mDrawableLtr; |
| 3032 | mHotspotX = getHotspotX(mDrawable, isRtlCharAtOffset); |
| 3033 | } |
| 3034 | |
| 3035 | protected abstract int getHotspotX(Drawable drawable, boolean isRtlRun); |
| 3036 | |
| 3037 | // Touch-up filter: number of previous positions remembered |
| 3038 | private static final int HISTORY_SIZE = 5; |
| 3039 | private static final int TOUCH_UP_FILTER_DELAY_AFTER = 150; |
| 3040 | private static final int TOUCH_UP_FILTER_DELAY_BEFORE = 350; |
| 3041 | private final long[] mPreviousOffsetsTimes = new long[HISTORY_SIZE]; |
| 3042 | private final int[] mPreviousOffsets = new int[HISTORY_SIZE]; |
| 3043 | private int mPreviousOffsetIndex = 0; |
| 3044 | private int mNumberPreviousOffsets = 0; |
| 3045 | |
| 3046 | private void startTouchUpFilter(int offset) { |
| 3047 | mNumberPreviousOffsets = 0; |
| 3048 | addPositionToTouchUpFilter(offset); |
| 3049 | } |
| 3050 | |
| 3051 | private void addPositionToTouchUpFilter(int offset) { |
| 3052 | mPreviousOffsetIndex = (mPreviousOffsetIndex + 1) % HISTORY_SIZE; |
| 3053 | mPreviousOffsets[mPreviousOffsetIndex] = offset; |
| 3054 | mPreviousOffsetsTimes[mPreviousOffsetIndex] = SystemClock.uptimeMillis(); |
| 3055 | mNumberPreviousOffsets++; |
| 3056 | } |
| 3057 | |
| 3058 | private void filterOnTouchUp() { |
| 3059 | final long now = SystemClock.uptimeMillis(); |
| 3060 | int i = 0; |
| 3061 | int index = mPreviousOffsetIndex; |
| 3062 | final int iMax = Math.min(mNumberPreviousOffsets, HISTORY_SIZE); |
| 3063 | while (i < iMax && (now - mPreviousOffsetsTimes[index]) < TOUCH_UP_FILTER_DELAY_AFTER) { |
| 3064 | i++; |
| 3065 | index = (mPreviousOffsetIndex - i + HISTORY_SIZE) % HISTORY_SIZE; |
| 3066 | } |
| 3067 | |
| 3068 | if (i > 0 && i < iMax && |
| 3069 | (now - mPreviousOffsetsTimes[index]) > TOUCH_UP_FILTER_DELAY_BEFORE) { |
| 3070 | positionAtCursorOffset(mPreviousOffsets[index], false); |
| 3071 | } |
| 3072 | } |
| 3073 | |
| 3074 | public boolean offsetHasBeenChanged() { |
| 3075 | return mNumberPreviousOffsets > 1; |
| 3076 | } |
| 3077 | |
| 3078 | @Override |
| 3079 | protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| 3080 | setMeasuredDimension(mDrawable.getIntrinsicWidth(), mDrawable.getIntrinsicHeight()); |
| 3081 | } |
| 3082 | |
| 3083 | public void show() { |
| 3084 | if (isShowing()) return; |
| 3085 | |
| 3086 | getPositionListener().addSubscriber(this, true /* local position may change */); |
| 3087 | |
| 3088 | // Make sure the offset is always considered new, even when focusing at same position |
| 3089 | mPreviousOffset = -1; |
| 3090 | positionAtCursorOffset(getCurrentCursorOffset(), false); |
| 3091 | |
| 3092 | hideActionPopupWindow(); |
| 3093 | } |
| 3094 | |
| 3095 | protected void dismiss() { |
| 3096 | mIsDragging = false; |
| 3097 | mContainer.dismiss(); |
| 3098 | onDetached(); |
| 3099 | } |
| 3100 | |
| 3101 | public void hide() { |
| 3102 | dismiss(); |
| 3103 | |
| 3104 | getPositionListener().removeSubscriber(this); |
| 3105 | } |
| 3106 | |
| 3107 | void showActionPopupWindow(int delay) { |
| 3108 | if (mActionPopupWindow == null) { |
| 3109 | mActionPopupWindow = new ActionPopupWindow(); |
| 3110 | } |
| 3111 | if (mActionPopupShower == null) { |
| 3112 | mActionPopupShower = new Runnable() { |
| 3113 | public void run() { |
| 3114 | mActionPopupWindow.show(); |
| 3115 | } |
| 3116 | }; |
| 3117 | } else { |
| 3118 | mTextView.removeCallbacks(mActionPopupShower); |
| 3119 | } |
| 3120 | mTextView.postDelayed(mActionPopupShower, delay); |
| 3121 | } |
| 3122 | |
| 3123 | protected void hideActionPopupWindow() { |
| 3124 | if (mActionPopupShower != null) { |
| 3125 | mTextView.removeCallbacks(mActionPopupShower); |
| 3126 | } |
| 3127 | if (mActionPopupWindow != null) { |
| 3128 | mActionPopupWindow.hide(); |
| 3129 | } |
| 3130 | } |
| 3131 | |
| 3132 | public boolean isShowing() { |
| 3133 | return mContainer.isShowing(); |
| 3134 | } |
| 3135 | |
| 3136 | private boolean isVisible() { |
| 3137 | // Always show a dragging handle. |
| 3138 | if (mIsDragging) { |
| 3139 | return true; |
| 3140 | } |
| 3141 | |
| 3142 | if (mTextView.isInBatchEditMode()) { |
| 3143 | return false; |
| 3144 | } |
| 3145 | |
| 3146 | return isPositionVisible(mPositionX + mHotspotX, mPositionY); |
| 3147 | } |
| 3148 | |
| 3149 | public abstract int getCurrentCursorOffset(); |
| 3150 | |
| 3151 | protected abstract void updateSelection(int offset); |
| 3152 | |
| 3153 | public abstract void updatePosition(float x, float y); |
| 3154 | |
| 3155 | protected void positionAtCursorOffset(int offset, boolean parentScrolled) { |
| 3156 | // A HandleView relies on the layout, which may be nulled by external methods |
| 3157 | Layout layout = mTextView.getLayout(); |
| 3158 | if (layout == null) { |
| 3159 | // Will update controllers' state, hiding them and stopping selection mode if needed |
| 3160 | prepareCursorControllers(); |
| 3161 | return; |
| 3162 | } |
| 3163 | |
| 3164 | boolean offsetChanged = offset != mPreviousOffset; |
| 3165 | if (offsetChanged || parentScrolled) { |
| 3166 | if (offsetChanged) { |
| 3167 | updateSelection(offset); |
| 3168 | addPositionToTouchUpFilter(offset); |
| 3169 | } |
| 3170 | final int line = layout.getLineForOffset(offset); |
| 3171 | |
| 3172 | mPositionX = (int) (layout.getPrimaryHorizontal(offset) - 0.5f - mHotspotX); |
| 3173 | mPositionY = layout.getLineBottom(line); |
| 3174 | |
| 3175 | // Take TextView's padding and scroll into account. |
| 3176 | mPositionX += mTextView.viewportToContentHorizontalOffset(); |
| 3177 | mPositionY += mTextView.viewportToContentVerticalOffset(); |
| 3178 | |
| 3179 | mPreviousOffset = offset; |
| 3180 | mPositionHasChanged = true; |
| 3181 | } |
| 3182 | } |
| 3183 | |
| 3184 | public void updatePosition(int parentPositionX, int parentPositionY, |
| 3185 | boolean parentPositionChanged, boolean parentScrolled) { |
| 3186 | positionAtCursorOffset(getCurrentCursorOffset(), parentScrolled); |
| 3187 | if (parentPositionChanged || mPositionHasChanged) { |
| 3188 | if (mIsDragging) { |
| 3189 | // Update touchToWindow offset in case of parent scrolling while dragging |
| 3190 | if (parentPositionX != mLastParentX || parentPositionY != mLastParentY) { |
| 3191 | mTouchToWindowOffsetX += parentPositionX - mLastParentX; |
| 3192 | mTouchToWindowOffsetY += parentPositionY - mLastParentY; |
| 3193 | mLastParentX = parentPositionX; |
| 3194 | mLastParentY = parentPositionY; |
| 3195 | } |
| 3196 | |
| 3197 | onHandleMoved(); |
| 3198 | } |
| 3199 | |
| 3200 | if (isVisible()) { |
| 3201 | final int positionX = parentPositionX + mPositionX; |
| 3202 | final int positionY = parentPositionY + mPositionY; |
| 3203 | if (isShowing()) { |
| 3204 | mContainer.update(positionX, positionY, -1, -1); |
| 3205 | } else { |
| 3206 | mContainer.showAtLocation(mTextView, Gravity.NO_GRAVITY, |
| 3207 | positionX, positionY); |
| 3208 | } |
| 3209 | } else { |
| 3210 | if (isShowing()) { |
| 3211 | dismiss(); |
| 3212 | } |
| 3213 | } |
| 3214 | |
| 3215 | mPositionHasChanged = false; |
| 3216 | } |
| 3217 | } |
| 3218 | |
| 3219 | @Override |
| 3220 | protected void onDraw(Canvas c) { |
| 3221 | mDrawable.setBounds(0, 0, mRight - mLeft, mBottom - mTop); |
| 3222 | mDrawable.draw(c); |
| 3223 | } |
| 3224 | |
| 3225 | @Override |
| 3226 | public boolean onTouchEvent(MotionEvent ev) { |
| 3227 | switch (ev.getActionMasked()) { |
| 3228 | case MotionEvent.ACTION_DOWN: { |
| 3229 | startTouchUpFilter(getCurrentCursorOffset()); |
| 3230 | mTouchToWindowOffsetX = ev.getRawX() - mPositionX; |
| 3231 | mTouchToWindowOffsetY = ev.getRawY() - mPositionY; |
| 3232 | |
| 3233 | final PositionListener positionListener = getPositionListener(); |
| 3234 | mLastParentX = positionListener.getPositionX(); |
| 3235 | mLastParentY = positionListener.getPositionY(); |
| 3236 | mIsDragging = true; |
| 3237 | break; |
| 3238 | } |
| 3239 | |
| 3240 | case MotionEvent.ACTION_MOVE: { |
| 3241 | final float rawX = ev.getRawX(); |
| 3242 | final float rawY = ev.getRawY(); |
| 3243 | |
| 3244 | // Vertical hysteresis: vertical down movement tends to snap to ideal offset |
| 3245 | final float previousVerticalOffset = mTouchToWindowOffsetY - mLastParentY; |
| 3246 | final float currentVerticalOffset = rawY - mPositionY - mLastParentY; |
| 3247 | float newVerticalOffset; |
| 3248 | if (previousVerticalOffset < mIdealVerticalOffset) { |
| 3249 | newVerticalOffset = Math.min(currentVerticalOffset, mIdealVerticalOffset); |
| 3250 | newVerticalOffset = Math.max(newVerticalOffset, previousVerticalOffset); |
| 3251 | } else { |
| 3252 | newVerticalOffset = Math.max(currentVerticalOffset, mIdealVerticalOffset); |
| 3253 | newVerticalOffset = Math.min(newVerticalOffset, previousVerticalOffset); |
| 3254 | } |
| 3255 | mTouchToWindowOffsetY = newVerticalOffset + mLastParentY; |
| 3256 | |
| 3257 | final float newPosX = rawX - mTouchToWindowOffsetX + mHotspotX; |
| 3258 | final float newPosY = rawY - mTouchToWindowOffsetY + mTouchOffsetY; |
| 3259 | |
| 3260 | updatePosition(newPosX, newPosY); |
| 3261 | break; |
| 3262 | } |
| 3263 | |
| 3264 | case MotionEvent.ACTION_UP: |
| 3265 | filterOnTouchUp(); |
| 3266 | mIsDragging = false; |
| 3267 | break; |
| 3268 | |
| 3269 | case MotionEvent.ACTION_CANCEL: |
| 3270 | mIsDragging = false; |
| 3271 | break; |
| 3272 | } |
| 3273 | return true; |
| 3274 | } |
| 3275 | |
| 3276 | public boolean isDragging() { |
| 3277 | return mIsDragging; |
| 3278 | } |
| 3279 | |
| 3280 | void onHandleMoved() { |
| 3281 | hideActionPopupWindow(); |
| 3282 | } |
| 3283 | |
| 3284 | public void onDetached() { |
| 3285 | hideActionPopupWindow(); |
| 3286 | } |
| 3287 | } |
| 3288 | |
| 3289 | private class InsertionHandleView extends HandleView { |
| 3290 | private static final int DELAY_BEFORE_HANDLE_FADES_OUT = 4000; |
| 3291 | private static final int RECENT_CUT_COPY_DURATION = 15 * 1000; // seconds |
| 3292 | |
| 3293 | // Used to detect taps on the insertion handle, which will affect the ActionPopupWindow |
| 3294 | private float mDownPositionX, mDownPositionY; |
| 3295 | private Runnable mHider; |
| 3296 | |
| 3297 | public InsertionHandleView(Drawable drawable) { |
| 3298 | super(drawable, drawable); |
| 3299 | } |
| 3300 | |
| 3301 | @Override |
| 3302 | public void show() { |
| 3303 | super.show(); |
| 3304 | |
| 3305 | final long durationSinceCutOrCopy = |
| 3306 | SystemClock.uptimeMillis() - TextView.LAST_CUT_OR_COPY_TIME; |
| 3307 | if (durationSinceCutOrCopy < RECENT_CUT_COPY_DURATION) { |
| 3308 | showActionPopupWindow(0); |
| 3309 | } |
| 3310 | |
| 3311 | hideAfterDelay(); |
| 3312 | } |
| 3313 | |
| 3314 | public void showWithActionPopup() { |
| 3315 | show(); |
| 3316 | showActionPopupWindow(0); |
| 3317 | } |
| 3318 | |
| 3319 | private void hideAfterDelay() { |
| 3320 | if (mHider == null) { |
| 3321 | mHider = new Runnable() { |
| 3322 | public void run() { |
| 3323 | hide(); |
| 3324 | } |
| 3325 | }; |
| 3326 | } else { |
| 3327 | removeHiderCallback(); |
| 3328 | } |
| 3329 | mTextView.postDelayed(mHider, DELAY_BEFORE_HANDLE_FADES_OUT); |
| 3330 | } |
| 3331 | |
| 3332 | private void removeHiderCallback() { |
| 3333 | if (mHider != null) { |
| 3334 | mTextView.removeCallbacks(mHider); |
| 3335 | } |
| 3336 | } |
| 3337 | |
| 3338 | @Override |
| 3339 | protected int getHotspotX(Drawable drawable, boolean isRtlRun) { |
| 3340 | return drawable.getIntrinsicWidth() / 2; |
| 3341 | } |
| 3342 | |
| 3343 | @Override |
| 3344 | public boolean onTouchEvent(MotionEvent ev) { |
| 3345 | final boolean result = super.onTouchEvent(ev); |
| 3346 | |
| 3347 | switch (ev.getActionMasked()) { |
| 3348 | case MotionEvent.ACTION_DOWN: |
| 3349 | mDownPositionX = ev.getRawX(); |
| 3350 | mDownPositionY = ev.getRawY(); |
| 3351 | break; |
| 3352 | |
| 3353 | case MotionEvent.ACTION_UP: |
| 3354 | if (!offsetHasBeenChanged()) { |
| 3355 | final float deltaX = mDownPositionX - ev.getRawX(); |
| 3356 | final float deltaY = mDownPositionY - ev.getRawY(); |
| 3357 | final float distanceSquared = deltaX * deltaX + deltaY * deltaY; |
| 3358 | |
| 3359 | final ViewConfiguration viewConfiguration = ViewConfiguration.get( |
| 3360 | mTextView.getContext()); |
| 3361 | final int touchSlop = viewConfiguration.getScaledTouchSlop(); |
| 3362 | |
| 3363 | if (distanceSquared < touchSlop * touchSlop) { |
| 3364 | if (mActionPopupWindow != null && mActionPopupWindow.isShowing()) { |
| 3365 | // Tapping on the handle dismisses the displayed action popup |
| 3366 | mActionPopupWindow.hide(); |
| 3367 | } else { |
| 3368 | showWithActionPopup(); |
| 3369 | } |
| 3370 | } |
| 3371 | } |
| 3372 | hideAfterDelay(); |
| 3373 | break; |
| 3374 | |
| 3375 | case MotionEvent.ACTION_CANCEL: |
| 3376 | hideAfterDelay(); |
| 3377 | break; |
| 3378 | |
| 3379 | default: |
| 3380 | break; |
| 3381 | } |
| 3382 | |
| 3383 | return result; |
| 3384 | } |
| 3385 | |
| 3386 | @Override |
| 3387 | public int getCurrentCursorOffset() { |
| 3388 | return mTextView.getSelectionStart(); |
| 3389 | } |
| 3390 | |
| 3391 | @Override |
| 3392 | public void updateSelection(int offset) { |
| 3393 | Selection.setSelection((Spannable) mTextView.getText(), offset); |
| 3394 | } |
| 3395 | |
| 3396 | @Override |
| 3397 | public void updatePosition(float x, float y) { |
| 3398 | positionAtCursorOffset(mTextView.getOffsetForPosition(x, y), false); |
| 3399 | } |
| 3400 | |
| 3401 | @Override |
| 3402 | void onHandleMoved() { |
| 3403 | super.onHandleMoved(); |
| 3404 | removeHiderCallback(); |
| 3405 | } |
| 3406 | |
| 3407 | @Override |
| 3408 | public void onDetached() { |
| 3409 | super.onDetached(); |
| 3410 | removeHiderCallback(); |
| 3411 | } |
| 3412 | } |
| 3413 | |
| 3414 | private class SelectionStartHandleView extends HandleView { |
| 3415 | |
| 3416 | public SelectionStartHandleView(Drawable drawableLtr, Drawable drawableRtl) { |
| 3417 | super(drawableLtr, drawableRtl); |
| 3418 | } |
| 3419 | |
| 3420 | @Override |
| 3421 | protected int getHotspotX(Drawable drawable, boolean isRtlRun) { |
| 3422 | if (isRtlRun) { |
| 3423 | return drawable.getIntrinsicWidth() / 4; |
| 3424 | } else { |
| 3425 | return (drawable.getIntrinsicWidth() * 3) / 4; |
| 3426 | } |
| 3427 | } |
| 3428 | |
| 3429 | @Override |
| 3430 | public int getCurrentCursorOffset() { |
| 3431 | return mTextView.getSelectionStart(); |
| 3432 | } |
| 3433 | |
| 3434 | @Override |
| 3435 | public void updateSelection(int offset) { |
| 3436 | Selection.setSelection((Spannable) mTextView.getText(), offset, |
| 3437 | mTextView.getSelectionEnd()); |
| 3438 | updateDrawable(); |
| 3439 | } |
| 3440 | |
| 3441 | @Override |
| 3442 | public void updatePosition(float x, float y) { |
| 3443 | int offset = mTextView.getOffsetForPosition(x, y); |
| 3444 | |
| 3445 | // Handles can not cross and selection is at least one character |
| 3446 | final int selectionEnd = mTextView.getSelectionEnd(); |
| 3447 | if (offset >= selectionEnd) offset = Math.max(0, selectionEnd - 1); |
| 3448 | |
| 3449 | positionAtCursorOffset(offset, false); |
| 3450 | } |
| 3451 | |
| 3452 | public ActionPopupWindow getActionPopupWindow() { |
| 3453 | return mActionPopupWindow; |
| 3454 | } |
| 3455 | } |
| 3456 | |
| 3457 | private class SelectionEndHandleView extends HandleView { |
| 3458 | |
| 3459 | public SelectionEndHandleView(Drawable drawableLtr, Drawable drawableRtl) { |
| 3460 | super(drawableLtr, drawableRtl); |
| 3461 | } |
| 3462 | |
| 3463 | @Override |
| 3464 | protected int getHotspotX(Drawable drawable, boolean isRtlRun) { |
| 3465 | if (isRtlRun) { |
| 3466 | return (drawable.getIntrinsicWidth() * 3) / 4; |
| 3467 | } else { |
| 3468 | return drawable.getIntrinsicWidth() / 4; |
| 3469 | } |
| 3470 | } |
| 3471 | |
| 3472 | @Override |
| 3473 | public int getCurrentCursorOffset() { |
| 3474 | return mTextView.getSelectionEnd(); |
| 3475 | } |
| 3476 | |
| 3477 | @Override |
| 3478 | public void updateSelection(int offset) { |
| 3479 | Selection.setSelection((Spannable) mTextView.getText(), |
| 3480 | mTextView.getSelectionStart(), offset); |
| 3481 | updateDrawable(); |
| 3482 | } |
| 3483 | |
| 3484 | @Override |
| 3485 | public void updatePosition(float x, float y) { |
| 3486 | int offset = mTextView.getOffsetForPosition(x, y); |
| 3487 | |
| 3488 | // Handles can not cross and selection is at least one character |
| 3489 | final int selectionStart = mTextView.getSelectionStart(); |
| 3490 | if (offset <= selectionStart) { |
| 3491 | offset = Math.min(selectionStart + 1, mTextView.getText().length()); |
| 3492 | } |
| 3493 | |
| 3494 | positionAtCursorOffset(offset, false); |
| 3495 | } |
| 3496 | |
| 3497 | public void setActionPopupWindow(ActionPopupWindow actionPopupWindow) { |
| 3498 | mActionPopupWindow = actionPopupWindow; |
| 3499 | } |
| 3500 | } |
| 3501 | |
| 3502 | /** |
| 3503 | * A CursorController instance can be used to control a cursor in the text. |
| 3504 | */ |
| 3505 | private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { |
| 3506 | /** |
| 3507 | * Makes the cursor controller visible on screen. |
| 3508 | * See also {@link #hide()}. |
| 3509 | */ |
| 3510 | public void show(); |
| 3511 | |
| 3512 | /** |
| 3513 | * Hide the cursor controller from screen. |
| 3514 | * See also {@link #show()}. |
| 3515 | */ |
| 3516 | public void hide(); |
| 3517 | |
| 3518 | /** |
| 3519 | * Called when the view is detached from window. Perform house keeping task, such as |
| 3520 | * stopping Runnable thread that would otherwise keep a reference on the context, thus |
| 3521 | * preventing the activity from being recycled. |
| 3522 | */ |
| 3523 | public void onDetached(); |
| 3524 | } |
| 3525 | |
| 3526 | private class InsertionPointCursorController implements CursorController { |
| 3527 | private InsertionHandleView mHandle; |
| 3528 | |
| 3529 | public void show() { |
| 3530 | getHandle().show(); |
| 3531 | } |
| 3532 | |
| 3533 | public void showWithActionPopup() { |
| 3534 | getHandle().showWithActionPopup(); |
| 3535 | } |
| 3536 | |
| 3537 | public void hide() { |
| 3538 | if (mHandle != null) { |
| 3539 | mHandle.hide(); |
| 3540 | } |
| 3541 | } |
| 3542 | |
| 3543 | public void onTouchModeChanged(boolean isInTouchMode) { |
| 3544 | if (!isInTouchMode) { |
| 3545 | hide(); |
| 3546 | } |
| 3547 | } |
| 3548 | |
| 3549 | private InsertionHandleView getHandle() { |
| 3550 | if (mSelectHandleCenter == null) { |
| 3551 | mSelectHandleCenter = mTextView.getResources().getDrawable( |
| 3552 | mTextView.mTextSelectHandleRes); |
| 3553 | } |
| 3554 | if (mHandle == null) { |
| 3555 | mHandle = new InsertionHandleView(mSelectHandleCenter); |
| 3556 | } |
| 3557 | return mHandle; |
| 3558 | } |
| 3559 | |
| 3560 | @Override |
| 3561 | public void onDetached() { |
| 3562 | final ViewTreeObserver observer = mTextView.getViewTreeObserver(); |
| 3563 | observer.removeOnTouchModeChangeListener(this); |
| 3564 | |
| 3565 | if (mHandle != null) mHandle.onDetached(); |
| 3566 | } |
| 3567 | } |
| 3568 | |
| 3569 | class SelectionModifierCursorController implements CursorController { |
| 3570 | private static final int DELAY_BEFORE_REPLACE_ACTION = 200; // milliseconds |
| 3571 | // The cursor controller handles, lazily created when shown. |
| 3572 | private SelectionStartHandleView mStartHandle; |
| 3573 | private SelectionEndHandleView mEndHandle; |
| 3574 | // The offsets of that last touch down event. Remembered to start selection there. |
| 3575 | private int mMinTouchOffset, mMaxTouchOffset; |
| 3576 | |
| 3577 | // Double tap detection |
| 3578 | private long mPreviousTapUpTime = 0; |
| 3579 | private float mDownPositionX, mDownPositionY; |
| 3580 | private boolean mGestureStayedInTapRegion; |
| 3581 | |
| 3582 | SelectionModifierCursorController() { |
| 3583 | resetTouchOffsets(); |
| 3584 | } |
| 3585 | |
| 3586 | public void show() { |
| 3587 | if (mTextView.isInBatchEditMode()) { |
| 3588 | return; |
| 3589 | } |
| 3590 | initDrawables(); |
| 3591 | initHandles(); |
| 3592 | hideInsertionPointCursorController(); |
| 3593 | } |
| 3594 | |
| 3595 | private void initDrawables() { |
| 3596 | if (mSelectHandleLeft == null) { |
| 3597 | mSelectHandleLeft = mTextView.getContext().getResources().getDrawable( |
| 3598 | mTextView.mTextSelectHandleLeftRes); |
| 3599 | } |
| 3600 | if (mSelectHandleRight == null) { |
| 3601 | mSelectHandleRight = mTextView.getContext().getResources().getDrawable( |
| 3602 | mTextView.mTextSelectHandleRightRes); |
| 3603 | } |
| 3604 | } |
| 3605 | |
| 3606 | private void initHandles() { |
| 3607 | // Lazy object creation has to be done before updatePosition() is called. |
| 3608 | if (mStartHandle == null) { |
| 3609 | mStartHandle = new SelectionStartHandleView(mSelectHandleLeft, mSelectHandleRight); |
| 3610 | } |
| 3611 | if (mEndHandle == null) { |
| 3612 | mEndHandle = new SelectionEndHandleView(mSelectHandleRight, mSelectHandleLeft); |
| 3613 | } |
| 3614 | |
| 3615 | mStartHandle.show(); |
| 3616 | mEndHandle.show(); |
| 3617 | |
| 3618 | // Make sure both left and right handles share the same ActionPopupWindow (so that |
| 3619 | // moving any of the handles hides the action popup). |
| 3620 | mStartHandle.showActionPopupWindow(DELAY_BEFORE_REPLACE_ACTION); |
| 3621 | mEndHandle.setActionPopupWindow(mStartHandle.getActionPopupWindow()); |
| 3622 | |
| 3623 | hideInsertionPointCursorController(); |
| 3624 | } |
| 3625 | |
| 3626 | public void hide() { |
| 3627 | if (mStartHandle != null) mStartHandle.hide(); |
| 3628 | if (mEndHandle != null) mEndHandle.hide(); |
| 3629 | } |
| 3630 | |
| 3631 | public void onTouchEvent(MotionEvent event) { |
| 3632 | // This is done even when the View does not have focus, so that long presses can start |
| 3633 | // selection and tap can move cursor from this tap position. |
| 3634 | switch (event.getActionMasked()) { |
| 3635 | case MotionEvent.ACTION_DOWN: |
| 3636 | final float x = event.getX(); |
| 3637 | final float y = event.getY(); |
| 3638 | |
| 3639 | // Remember finger down position, to be able to start selection from there |
| 3640 | mMinTouchOffset = mMaxTouchOffset = mTextView.getOffsetForPosition(x, y); |
| 3641 | |
| 3642 | // Double tap detection |
| 3643 | if (mGestureStayedInTapRegion) { |
| 3644 | long duration = SystemClock.uptimeMillis() - mPreviousTapUpTime; |
| 3645 | if (duration <= ViewConfiguration.getDoubleTapTimeout()) { |
| 3646 | final float deltaX = x - mDownPositionX; |
| 3647 | final float deltaY = y - mDownPositionY; |
| 3648 | final float distanceSquared = deltaX * deltaX + deltaY * deltaY; |
| 3649 | |
| 3650 | ViewConfiguration viewConfiguration = ViewConfiguration.get( |
| 3651 | mTextView.getContext()); |
| 3652 | int doubleTapSlop = viewConfiguration.getScaledDoubleTapSlop(); |
| 3653 | boolean stayedInArea = distanceSquared < doubleTapSlop * doubleTapSlop; |
| 3654 | |
| 3655 | if (stayedInArea && isPositionOnText(x, y)) { |
| 3656 | startSelectionActionMode(); |
| 3657 | mDiscardNextActionUp = true; |
| 3658 | } |
| 3659 | } |
| 3660 | } |
| 3661 | |
| 3662 | mDownPositionX = x; |
| 3663 | mDownPositionY = y; |
| 3664 | mGestureStayedInTapRegion = true; |
| 3665 | break; |
| 3666 | |
| 3667 | case MotionEvent.ACTION_POINTER_DOWN: |
| 3668 | case MotionEvent.ACTION_POINTER_UP: |
| 3669 | // Handle multi-point gestures. Keep min and max offset positions. |
| 3670 | // Only activated for devices that correctly handle multi-touch. |
| 3671 | if (mTextView.getContext().getPackageManager().hasSystemFeature( |
| 3672 | PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT)) { |
| 3673 | updateMinAndMaxOffsets(event); |
| 3674 | } |
| 3675 | break; |
| 3676 | |
| 3677 | case MotionEvent.ACTION_MOVE: |
| 3678 | if (mGestureStayedInTapRegion) { |
| 3679 | final float deltaX = event.getX() - mDownPositionX; |
| 3680 | final float deltaY = event.getY() - mDownPositionY; |
| 3681 | final float distanceSquared = deltaX * deltaX + deltaY * deltaY; |
| 3682 | |
| 3683 | final ViewConfiguration viewConfiguration = ViewConfiguration.get( |
| 3684 | mTextView.getContext()); |
| 3685 | int doubleTapTouchSlop = viewConfiguration.getScaledDoubleTapTouchSlop(); |
| 3686 | |
| 3687 | if (distanceSquared > doubleTapTouchSlop * doubleTapTouchSlop) { |
| 3688 | mGestureStayedInTapRegion = false; |
| 3689 | } |
| 3690 | } |
| 3691 | break; |
| 3692 | |
| 3693 | case MotionEvent.ACTION_UP: |
| 3694 | mPreviousTapUpTime = SystemClock.uptimeMillis(); |
| 3695 | break; |
| 3696 | } |
| 3697 | } |
| 3698 | |
| 3699 | /** |
| 3700 | * @param event |
| 3701 | */ |
| 3702 | private void updateMinAndMaxOffsets(MotionEvent event) { |
| 3703 | int pointerCount = event.getPointerCount(); |
| 3704 | for (int index = 0; index < pointerCount; index++) { |
| 3705 | int offset = mTextView.getOffsetForPosition(event.getX(index), event.getY(index)); |
| 3706 | if (offset < mMinTouchOffset) mMinTouchOffset = offset; |
| 3707 | if (offset > mMaxTouchOffset) mMaxTouchOffset = offset; |
| 3708 | } |
| 3709 | } |
| 3710 | |
| 3711 | public int getMinTouchOffset() { |
| 3712 | return mMinTouchOffset; |
| 3713 | } |
| 3714 | |
| 3715 | public int getMaxTouchOffset() { |
| 3716 | return mMaxTouchOffset; |
| 3717 | } |
| 3718 | |
| 3719 | public void resetTouchOffsets() { |
| 3720 | mMinTouchOffset = mMaxTouchOffset = -1; |
| 3721 | } |
| 3722 | |
| 3723 | /** |
| 3724 | * @return true iff this controller is currently used to move the selection start. |
| 3725 | */ |
| 3726 | public boolean isSelectionStartDragged() { |
| 3727 | return mStartHandle != null && mStartHandle.isDragging(); |
| 3728 | } |
| 3729 | |
| 3730 | public void onTouchModeChanged(boolean isInTouchMode) { |
| 3731 | if (!isInTouchMode) { |
| 3732 | hide(); |
| 3733 | } |
| 3734 | } |
| 3735 | |
| 3736 | @Override |
| 3737 | public void onDetached() { |
| 3738 | final ViewTreeObserver observer = mTextView.getViewTreeObserver(); |
| 3739 | observer.removeOnTouchModeChangeListener(this); |
| 3740 | |
| 3741 | if (mStartHandle != null) mStartHandle.onDetached(); |
| 3742 | if (mEndHandle != null) mEndHandle.onDetached(); |
| 3743 | } |
| 3744 | } |
| 3745 | |
| 3746 | private class CorrectionHighlighter { |
| 3747 | private final Path mPath = new Path(); |
| 3748 | private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| 3749 | private int mStart, mEnd; |
| 3750 | private long mFadingStartTime; |
| 3751 | private RectF mTempRectF; |
| 3752 | private final static int FADE_OUT_DURATION = 400; |
| 3753 | |
| 3754 | public CorrectionHighlighter() { |
| 3755 | mPaint.setCompatibilityScaling(mTextView.getResources().getCompatibilityInfo(). |
| 3756 | applicationScale); |
| 3757 | mPaint.setStyle(Paint.Style.FILL); |
| 3758 | } |
| 3759 | |
| 3760 | public void highlight(CorrectionInfo info) { |
| 3761 | mStart = info.getOffset(); |
| 3762 | mEnd = mStart + info.getNewText().length(); |
| 3763 | mFadingStartTime = SystemClock.uptimeMillis(); |
| 3764 | |
| 3765 | if (mStart < 0 || mEnd < 0) { |
| 3766 | stopAnimation(); |
| 3767 | } |
| 3768 | } |
| 3769 | |
| 3770 | public void draw(Canvas canvas, int cursorOffsetVertical) { |
| 3771 | if (updatePath() && updatePaint()) { |
| 3772 | if (cursorOffsetVertical != 0) { |
| 3773 | canvas.translate(0, cursorOffsetVertical); |
| 3774 | } |
| 3775 | |
| 3776 | canvas.drawPath(mPath, mPaint); |
| 3777 | |
| 3778 | if (cursorOffsetVertical != 0) { |
| 3779 | canvas.translate(0, -cursorOffsetVertical); |
| 3780 | } |
| 3781 | invalidate(true); // TODO invalidate cursor region only |
| 3782 | } else { |
| 3783 | stopAnimation(); |
| 3784 | invalidate(false); // TODO invalidate cursor region only |
| 3785 | } |
| 3786 | } |
| 3787 | |
| 3788 | private boolean updatePaint() { |
| 3789 | final long duration = SystemClock.uptimeMillis() - mFadingStartTime; |
| 3790 | if (duration > FADE_OUT_DURATION) return false; |
| 3791 | |
| 3792 | final float coef = 1.0f - (float) duration / FADE_OUT_DURATION; |
| 3793 | final int highlightColorAlpha = Color.alpha(mTextView.mHighlightColor); |
| 3794 | final int color = (mTextView.mHighlightColor & 0x00FFFFFF) + |
| 3795 | ((int) (highlightColorAlpha * coef) << 24); |
| 3796 | mPaint.setColor(color); |
| 3797 | return true; |
| 3798 | } |
| 3799 | |
| 3800 | private boolean updatePath() { |
| 3801 | final Layout layout = mTextView.getLayout(); |
| 3802 | if (layout == null) return false; |
| 3803 | |
| 3804 | // Update in case text is edited while the animation is run |
| 3805 | final int length = mTextView.getText().length(); |
| 3806 | int start = Math.min(length, mStart); |
| 3807 | int end = Math.min(length, mEnd); |
| 3808 | |
| 3809 | mPath.reset(); |
| 3810 | layout.getSelectionPath(start, end, mPath); |
| 3811 | return true; |
| 3812 | } |
| 3813 | |
| 3814 | private void invalidate(boolean delayed) { |
| 3815 | if (mTextView.getLayout() == null) return; |
| 3816 | |
| 3817 | if (mTempRectF == null) mTempRectF = new RectF(); |
| 3818 | mPath.computeBounds(mTempRectF, false); |
| 3819 | |
| 3820 | int left = mTextView.getCompoundPaddingLeft(); |
| 3821 | int top = mTextView.getExtendedPaddingTop() + mTextView.getVerticalOffset(true); |
| 3822 | |
| 3823 | if (delayed) { |
| 3824 | mTextView.postInvalidateOnAnimation( |
| 3825 | left + (int) mTempRectF.left, top + (int) mTempRectF.top, |
| 3826 | left + (int) mTempRectF.right, top + (int) mTempRectF.bottom); |
| 3827 | } else { |
| 3828 | mTextView.postInvalidate((int) mTempRectF.left, (int) mTempRectF.top, |
| 3829 | (int) mTempRectF.right, (int) mTempRectF.bottom); |
| 3830 | } |
| 3831 | } |
| 3832 | |
| 3833 | private void stopAnimation() { |
| 3834 | Editor.this.mCorrectionHighlighter = null; |
| 3835 | } |
| 3836 | } |
| 3837 | |
| 3838 | private static class ErrorPopup extends PopupWindow { |
| 3839 | private boolean mAbove = false; |
| 3840 | private final TextView mView; |
| 3841 | private int mPopupInlineErrorBackgroundId = 0; |
| 3842 | private int mPopupInlineErrorAboveBackgroundId = 0; |
| 3843 | |
| 3844 | ErrorPopup(TextView v, int width, int height) { |
| 3845 | super(v, width, height); |
| 3846 | mView = v; |
| 3847 | // Make sure the TextView has a background set as it will be used the first time it is |
Fabrice Di Meglio | bb0cbae | 2012-11-13 20:51:24 -0800 | [diff] [blame] | 3848 | // shown and positioned. Initialized with below background, which should have |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 3849 | // dimensions identical to the above version for this to work (and is more likely). |
| 3850 | mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, |
| 3851 | com.android.internal.R.styleable.Theme_errorMessageBackground); |
| 3852 | mView.setBackgroundResource(mPopupInlineErrorBackgroundId); |
| 3853 | } |
| 3854 | |
| 3855 | void fixDirection(boolean above) { |
| 3856 | mAbove = above; |
| 3857 | |
| 3858 | if (above) { |
| 3859 | mPopupInlineErrorAboveBackgroundId = |
| 3860 | getResourceId(mPopupInlineErrorAboveBackgroundId, |
| 3861 | com.android.internal.R.styleable.Theme_errorMessageAboveBackground); |
| 3862 | } else { |
| 3863 | mPopupInlineErrorBackgroundId = getResourceId(mPopupInlineErrorBackgroundId, |
| 3864 | com.android.internal.R.styleable.Theme_errorMessageBackground); |
| 3865 | } |
| 3866 | |
| 3867 | mView.setBackgroundResource(above ? mPopupInlineErrorAboveBackgroundId : |
| 3868 | mPopupInlineErrorBackgroundId); |
| 3869 | } |
| 3870 | |
| 3871 | private int getResourceId(int currentId, int index) { |
| 3872 | if (currentId == 0) { |
| 3873 | TypedArray styledAttributes = mView.getContext().obtainStyledAttributes( |
| 3874 | R.styleable.Theme); |
| 3875 | currentId = styledAttributes.getResourceId(index, 0); |
| 3876 | styledAttributes.recycle(); |
| 3877 | } |
| 3878 | return currentId; |
| 3879 | } |
| 3880 | |
| 3881 | @Override |
| 3882 | public void update(int x, int y, int w, int h, boolean force) { |
| 3883 | super.update(x, y, w, h, force); |
| 3884 | |
| 3885 | boolean above = isAboveAnchor(); |
| 3886 | if (above != mAbove) { |
| 3887 | fixDirection(above); |
| 3888 | } |
| 3889 | } |
| 3890 | } |
| 3891 | |
| 3892 | static class InputContentType { |
| 3893 | int imeOptions = EditorInfo.IME_NULL; |
| 3894 | String privateImeOptions; |
| 3895 | CharSequence imeActionLabel; |
| 3896 | int imeActionId; |
| 3897 | Bundle extras; |
| 3898 | OnEditorActionListener onEditorActionListener; |
| 3899 | boolean enterDown; |
| 3900 | } |
| 3901 | |
| 3902 | static class InputMethodState { |
| 3903 | Rect mCursorRectInWindow = new Rect(); |
| 3904 | RectF mTmpRectF = new RectF(); |
| 3905 | float[] mTmpOffset = new float[2]; |
Gilles Debunne | c62589c | 2012-04-12 14:50:23 -0700 | [diff] [blame] | 3906 | ExtractedTextRequest mExtractedTextRequest; |
| 3907 | final ExtractedText mExtractedText = new ExtractedText(); |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 3908 | int mBatchEditNesting; |
| 3909 | boolean mCursorChanged; |
| 3910 | boolean mSelectionModeChanged; |
| 3911 | boolean mContentChanged; |
| 3912 | int mChangedStart, mChangedEnd, mChangedDelta; |
| 3913 | } |
Satoshi Kataoka | 0e3849a | 2012-12-13 14:37:19 +0900 | [diff] [blame] | 3914 | |
Dianne Hackborn | 3aa49b6 | 2013-04-26 16:39:17 -0700 | [diff] [blame] | 3915 | public static class UndoInputFilter implements InputFilter { |
| 3916 | final Editor mEditor; |
| 3917 | |
| 3918 | public UndoInputFilter(Editor editor) { |
| 3919 | mEditor = editor; |
| 3920 | } |
| 3921 | |
| 3922 | @Override |
| 3923 | public CharSequence filter(CharSequence source, int start, int end, |
| 3924 | Spanned dest, int dstart, int dend) { |
| 3925 | if (DEBUG_UNDO) { |
| 3926 | Log.d(TAG, "filter: source=" + source + " (" + start + "-" + end + ")"); |
| 3927 | Log.d(TAG, "filter: dest=" + dest + " (" + dstart + "-" + dend + ")"); |
| 3928 | } |
| 3929 | final UndoManager um = mEditor.mUndoManager; |
| 3930 | if (um.isInUndo()) { |
| 3931 | if (DEBUG_UNDO) Log.d(TAG, "*** skipping, currently performing undo/redo"); |
| 3932 | return null; |
| 3933 | } |
| 3934 | |
| 3935 | um.beginUpdate("Edit text"); |
| 3936 | TextModifyOperation op = um.getLastOperation( |
| 3937 | TextModifyOperation.class, mEditor.mUndoOwner, UndoManager.MERGE_MODE_UNIQUE); |
| 3938 | if (op != null) { |
| 3939 | if (DEBUG_UNDO) Log.d(TAG, "Last op: range=(" + op.mRangeStart + "-" + op.mRangeEnd |
| 3940 | + "), oldText=" + op.mOldText); |
| 3941 | // See if we can continue modifying this operation. |
| 3942 | if (op.mOldText == null) { |
| 3943 | // The current operation is an add... are we adding more? We are adding |
| 3944 | // more if we are either appending new text to the end of the last edit or |
| 3945 | // completely replacing some or all of the last edit. |
| 3946 | if (start < end && ((dstart >= op.mRangeStart && dend <= op.mRangeEnd) |
| 3947 | || (dstart == op.mRangeEnd && dend == op.mRangeEnd))) { |
| 3948 | op.mRangeEnd = dstart + (end-start); |
| 3949 | um.endUpdate(); |
| 3950 | if (DEBUG_UNDO) Log.d(TAG, "*** merging with last op, mRangeEnd=" |
| 3951 | + op.mRangeEnd); |
| 3952 | return null; |
| 3953 | } |
| 3954 | } else { |
| 3955 | // The current operation is a delete... can we delete more? |
| 3956 | if (start == end && dend == op.mRangeStart-1) { |
| 3957 | SpannableStringBuilder str; |
| 3958 | if (op.mOldText instanceof SpannableString) { |
| 3959 | str = (SpannableStringBuilder)op.mOldText; |
| 3960 | } else { |
| 3961 | str = new SpannableStringBuilder(op.mOldText); |
| 3962 | } |
| 3963 | str.insert(0, dest, dstart, dend); |
| 3964 | op.mRangeStart = dstart; |
| 3965 | op.mOldText = str; |
| 3966 | um.endUpdate(); |
| 3967 | if (DEBUG_UNDO) Log.d(TAG, "*** merging with last op, range=(" |
| 3968 | + op.mRangeStart + "-" + op.mRangeEnd |
| 3969 | + "), oldText=" + op.mOldText); |
| 3970 | return null; |
| 3971 | } |
| 3972 | } |
| 3973 | |
| 3974 | // Couldn't add to the current undo operation, need to start a new |
| 3975 | // undo state for a new undo operation. |
| 3976 | um.commitState(null); |
| 3977 | um.setUndoLabel("Edit text"); |
| 3978 | } |
| 3979 | |
| 3980 | // Create a new undo state reflecting the operation being performed. |
| 3981 | op = new TextModifyOperation(mEditor.mUndoOwner); |
| 3982 | op.mRangeStart = dstart; |
| 3983 | if (start < end) { |
| 3984 | op.mRangeEnd = dstart + (end-start); |
| 3985 | } else { |
| 3986 | op.mRangeEnd = dstart; |
| 3987 | } |
| 3988 | if (dstart < dend) { |
| 3989 | op.mOldText = dest.subSequence(dstart, dend); |
| 3990 | } |
| 3991 | if (DEBUG_UNDO) Log.d(TAG, "*** adding new op, range=(" + op.mRangeStart |
| 3992 | + "-" + op.mRangeEnd + "), oldText=" + op.mOldText); |
| 3993 | um.addOperation(op, UndoManager.MERGE_MODE_NONE); |
| 3994 | um.endUpdate(); |
| 3995 | return null; |
| 3996 | } |
| 3997 | } |
| 3998 | |
| 3999 | public static class TextModifyOperation extends UndoOperation<TextView> { |
| 4000 | int mRangeStart, mRangeEnd; |
| 4001 | CharSequence mOldText; |
| 4002 | |
| 4003 | public TextModifyOperation(UndoOwner owner) { |
| 4004 | super(owner); |
| 4005 | } |
| 4006 | |
| 4007 | public TextModifyOperation(Parcel src, ClassLoader loader) { |
| 4008 | super(src, loader); |
| 4009 | mRangeStart = src.readInt(); |
| 4010 | mRangeEnd = src.readInt(); |
| 4011 | mOldText = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(src); |
| 4012 | } |
| 4013 | |
| 4014 | @Override |
| 4015 | public void commit() { |
| 4016 | } |
| 4017 | |
| 4018 | @Override |
| 4019 | public void undo() { |
| 4020 | swapText(); |
| 4021 | } |
| 4022 | |
| 4023 | @Override |
| 4024 | public void redo() { |
| 4025 | swapText(); |
| 4026 | } |
| 4027 | |
| 4028 | private void swapText() { |
| 4029 | // Both undo and redo involves swapping the contents of the range |
| 4030 | // in the text view with our local text. |
| 4031 | TextView tv = getOwnerData(); |
| 4032 | Editable editable = (Editable)tv.getText(); |
| 4033 | CharSequence curText; |
| 4034 | if (mRangeStart >= mRangeEnd) { |
| 4035 | curText = null; |
| 4036 | } else { |
| 4037 | curText = editable.subSequence(mRangeStart, mRangeEnd); |
| 4038 | } |
| 4039 | if (DEBUG_UNDO) { |
| 4040 | Log.d(TAG, "Swap: range=(" + mRangeStart + "-" + mRangeEnd |
| 4041 | + "), oldText=" + mOldText); |
| 4042 | Log.d(TAG, "Swap: curText=" + curText); |
| 4043 | } |
| 4044 | if (mOldText == null) { |
| 4045 | editable.delete(mRangeStart, mRangeEnd); |
| 4046 | mRangeEnd = mRangeStart; |
| 4047 | } else { |
| 4048 | editable.replace(mRangeStart, mRangeEnd, mOldText); |
| 4049 | mRangeEnd = mRangeStart + mOldText.length(); |
| 4050 | } |
| 4051 | mOldText = curText; |
| 4052 | } |
| 4053 | |
| 4054 | @Override |
| 4055 | public void writeToParcel(Parcel dest, int flags) { |
| 4056 | dest.writeInt(mRangeStart); |
| 4057 | dest.writeInt(mRangeEnd); |
| 4058 | TextUtils.writeToParcel(mOldText, dest, flags); |
| 4059 | } |
| 4060 | |
| 4061 | public static final Parcelable.ClassLoaderCreator<TextModifyOperation> CREATOR |
| 4062 | = new Parcelable.ClassLoaderCreator<TextModifyOperation>() { |
| 4063 | public TextModifyOperation createFromParcel(Parcel in) { |
| 4064 | return new TextModifyOperation(in, null); |
| 4065 | } |
| 4066 | |
| 4067 | public TextModifyOperation createFromParcel(Parcel in, ClassLoader loader) { |
| 4068 | return new TextModifyOperation(in, loader); |
| 4069 | } |
| 4070 | |
| 4071 | public TextModifyOperation[] newArray(int size) { |
| 4072 | return new TextModifyOperation[size]; |
| 4073 | } |
| 4074 | }; |
| 4075 | } |
Gilles Debunne | d88876a | 2012-03-16 17:34:04 -0700 | [diff] [blame] | 4076 | } |