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