WebViewClassic.java revision cf034e37733645e166736a383d062ba73a8f9687
1/* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.animation.ObjectAnimator; 20import android.annotation.Widget; 21import android.app.ActivityManager; 22import android.app.AlertDialog; 23import android.content.BroadcastReceiver; 24import android.content.ClipData; 25import android.content.ClipboardManager; 26import android.content.ComponentCallbacks2; 27import android.content.Context; 28import android.content.DialogInterface; 29import android.content.DialogInterface.OnCancelListener; 30import android.content.Intent; 31import android.content.IntentFilter; 32import android.content.pm.PackageManager; 33import android.content.res.Configuration; 34import android.database.DataSetObserver; 35import android.graphics.Bitmap; 36import android.graphics.BitmapFactory; 37import android.graphics.BitmapShader; 38import android.graphics.Canvas; 39import android.graphics.Color; 40import android.graphics.ColorFilter; 41import android.graphics.DrawFilter; 42import android.graphics.Paint; 43import android.graphics.PaintFlagsDrawFilter; 44import android.graphics.Picture; 45import android.graphics.Point; 46import android.graphics.PointF; 47import android.graphics.Rect; 48import android.graphics.RectF; 49import android.graphics.Region; 50import android.graphics.RegionIterator; 51import android.graphics.Shader; 52import android.graphics.drawable.Drawable; 53import android.net.Proxy; 54import android.net.ProxyProperties; 55import android.net.Uri; 56import android.net.http.SslCertificate; 57import android.os.AsyncTask; 58import android.os.Bundle; 59import android.os.Handler; 60import android.os.Looper; 61import android.os.Message; 62import android.os.SystemClock; 63import android.provider.Settings; 64import android.security.KeyChain; 65import android.speech.tts.TextToSpeech; 66import android.text.Editable; 67import android.text.InputType; 68import android.text.Selection; 69import android.text.TextUtils; 70import android.util.DisplayMetrics; 71import android.util.EventLog; 72import android.util.Log; 73import android.view.Display; 74import android.view.Gravity; 75import android.view.HapticFeedbackConstants; 76import android.view.HardwareCanvas; 77import android.view.InputDevice; 78import android.view.KeyCharacterMap; 79import android.view.KeyEvent; 80import android.view.LayoutInflater; 81import android.view.MotionEvent; 82import android.view.ScaleGestureDetector; 83import android.view.SoundEffectConstants; 84import android.view.VelocityTracker; 85import android.view.View; 86import android.view.View.MeasureSpec; 87import android.view.ViewConfiguration; 88import android.view.ViewGroup; 89import android.view.ViewParent; 90import android.view.ViewRootImpl; 91import android.view.ViewTreeObserver; 92import android.view.WindowManager; 93import android.view.accessibility.AccessibilityEvent; 94import android.view.accessibility.AccessibilityManager; 95import android.view.accessibility.AccessibilityNodeInfo; 96import android.view.inputmethod.BaseInputConnection; 97import android.view.inputmethod.EditorInfo; 98import android.view.inputmethod.InputConnection; 99import android.view.inputmethod.InputMethodManager; 100import android.webkit.WebView.HitTestResult; 101import android.webkit.WebView.PictureListener; 102import android.webkit.WebViewCore.DrawData; 103import android.webkit.WebViewCore.EventHub; 104import android.webkit.WebViewCore.TextFieldInitData; 105import android.webkit.WebViewCore.TextSelectionData; 106import android.webkit.WebViewCore.TouchHighlightData; 107import android.webkit.WebViewCore.WebKitHitTest; 108import android.widget.AbsoluteLayout; 109import android.widget.Adapter; 110import android.widget.AdapterView; 111import android.widget.AdapterView.OnItemClickListener; 112import android.widget.ArrayAdapter; 113import android.widget.CheckedTextView; 114import android.widget.LinearLayout; 115import android.widget.ListView; 116import android.widget.OverScroller; 117import android.widget.PopupWindow; 118import android.widget.Scroller; 119import android.widget.TextView; 120import android.widget.Toast; 121 122import junit.framework.Assert; 123 124import java.io.File; 125import java.io.FileInputStream; 126import java.io.FileNotFoundException; 127import java.io.FileOutputStream; 128import java.io.IOException; 129import java.io.InputStream; 130import java.io.OutputStream; 131import java.net.URLDecoder; 132import java.util.ArrayList; 133import java.util.HashMap; 134import java.util.HashSet; 135import java.util.List; 136import java.util.Map; 137import java.util.Set; 138import java.util.Vector; 139import java.util.regex.Matcher; 140import java.util.regex.Pattern; 141 142/** 143 * Implements a backend provider for the {@link WebView} public API. 144 * @hide 145 */ 146// TODO: Check if any WebView published API methods are called from within here, and if so 147// we should bounce the call out via the proxy to enable any sub-class to override it. 148@Widget 149@SuppressWarnings("deprecation") 150public final class WebViewClassic implements WebViewProvider, WebViewProvider.ScrollDelegate, 151 WebViewProvider.ViewDelegate { 152 /** 153 * InputConnection used for ContentEditable. This captures changes 154 * to the text and sends them either as key strokes or text changes. 155 */ 156 class WebViewInputConnection extends BaseInputConnection { 157 // Used for mapping characters to keys typed. 158 private KeyCharacterMap mKeyCharacterMap; 159 private boolean mIsKeySentByMe; 160 private int mInputType; 161 private int mImeOptions; 162 private String mHint; 163 private int mMaxLength; 164 private boolean mIsAutoFillable; 165 private boolean mIsAutoCompleteEnabled; 166 private String mName; 167 private int mBatchLevel; 168 169 public WebViewInputConnection() { 170 super(mWebView, true); 171 } 172 173 public void setAutoFillable(int queryId) { 174 mIsAutoFillable = getSettings().getAutoFillEnabled() 175 && (queryId != WebTextView.FORM_NOT_AUTOFILLABLE); 176 int variation = mInputType & EditorInfo.TYPE_MASK_VARIATION; 177 if (variation != EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD 178 && (mIsAutoFillable || mIsAutoCompleteEnabled)) { 179 if (mName != null && mName.length() > 0) { 180 requestFormData(mName, mFieldPointer, mIsAutoFillable, 181 mIsAutoCompleteEnabled); 182 } 183 } 184 } 185 186 @Override 187 public boolean beginBatchEdit() { 188 if (mBatchLevel == 0) { 189 beginTextBatch(); 190 } 191 mBatchLevel++; 192 return false; 193 } 194 195 @Override 196 public boolean endBatchEdit() { 197 mBatchLevel--; 198 if (mBatchLevel == 0) { 199 commitTextBatch(); 200 } 201 return false; 202 } 203 204 public boolean getIsAutoFillable() { 205 return mIsAutoFillable; 206 } 207 208 @Override 209 public boolean sendKeyEvent(KeyEvent event) { 210 // Some IMEs send key events directly using sendKeyEvents. 211 // WebViewInputConnection should treat these as text changes. 212 if (!mIsKeySentByMe) { 213 if (event.getAction() == KeyEvent.ACTION_UP) { 214 if (event.getKeyCode() == KeyEvent.KEYCODE_DEL) { 215 return deleteSurroundingText(1, 0); 216 } else if (event.getKeyCode() == KeyEvent.KEYCODE_FORWARD_DEL) { 217 return deleteSurroundingText(0, 1); 218 } else if (event.getUnicodeChar() != 0){ 219 String newComposingText = 220 Character.toString((char)event.getUnicodeChar()); 221 return commitText(newComposingText, 1); 222 } 223 } else if (event.getAction() == KeyEvent.ACTION_DOWN && 224 (event.getKeyCode() == KeyEvent.KEYCODE_DEL 225 || event.getKeyCode() == KeyEvent.KEYCODE_FORWARD_DEL 226 || event.getUnicodeChar() != 0)) { 227 return true; // only act on action_down 228 } 229 } 230 return super.sendKeyEvent(event); 231 } 232 233 public void setTextAndKeepSelection(CharSequence text) { 234 Editable editable = getEditable(); 235 int selectionStart = Selection.getSelectionStart(editable); 236 int selectionEnd = Selection.getSelectionEnd(editable); 237 text = limitReplaceTextByMaxLength(text, editable.length()); 238 editable.replace(0, editable.length(), text); 239 restartInput(); 240 // Keep the previous selection. 241 selectionStart = Math.min(selectionStart, editable.length()); 242 selectionEnd = Math.min(selectionEnd, editable.length()); 243 setSelection(selectionStart, selectionEnd); 244 finishComposingText(); 245 } 246 247 public void replaceSelection(CharSequence text) { 248 Editable editable = getEditable(); 249 int selectionStart = Selection.getSelectionStart(editable); 250 int selectionEnd = Selection.getSelectionEnd(editable); 251 text = limitReplaceTextByMaxLength(text, selectionEnd - selectionStart); 252 setNewText(selectionStart, selectionEnd, text); 253 editable.replace(selectionStart, selectionEnd, text); 254 restartInput(); 255 // Move caret to the end of the new text 256 int newCaret = selectionStart + text.length(); 257 setSelection(newCaret, newCaret); 258 } 259 260 @Override 261 public boolean setComposingText(CharSequence text, int newCursorPosition) { 262 Editable editable = getEditable(); 263 int start = getComposingSpanStart(editable); 264 int end = getComposingSpanEnd(editable); 265 if (start < 0 || end < 0) { 266 start = Selection.getSelectionStart(editable); 267 end = Selection.getSelectionEnd(editable); 268 } 269 if (end < start) { 270 int temp = end; 271 end = start; 272 start = temp; 273 } 274 CharSequence limitedText = limitReplaceTextByMaxLength(text, end - start); 275 setNewText(start, end, limitedText); 276 if (limitedText != text) { 277 newCursorPosition -= text.length() - limitedText.length(); 278 } 279 super.setComposingText(limitedText, newCursorPosition); 280 if (limitedText != text) { 281 restartInput(); 282 int lastCaret = start + limitedText.length(); 283 finishComposingText(); 284 setSelection(lastCaret, lastCaret); 285 } 286 return true; 287 } 288 289 @Override 290 public boolean commitText(CharSequence text, int newCursorPosition) { 291 setComposingText(text, newCursorPosition); 292 int cursorPosition = Selection.getSelectionEnd(getEditable()); 293 setComposingRegion(cursorPosition, cursorPosition); 294 return true; 295 } 296 297 @Override 298 public boolean deleteSurroundingText(int leftLength, int rightLength) { 299 Editable editable = getEditable(); 300 int cursorPosition = Selection.getSelectionEnd(editable); 301 int startDelete = Math.max(0, cursorPosition - leftLength); 302 int endDelete = Math.min(editable.length(), 303 cursorPosition + rightLength); 304 setNewText(startDelete, endDelete, ""); 305 return super.deleteSurroundingText(leftLength, rightLength); 306 } 307 308 @Override 309 public boolean performEditorAction(int editorAction) { 310 311 boolean handled = true; 312 switch (editorAction) { 313 case EditorInfo.IME_ACTION_NEXT: 314 mWebView.requestFocus(View.FOCUS_FORWARD); 315 break; 316 case EditorInfo.IME_ACTION_PREVIOUS: 317 mWebView.requestFocus(View.FOCUS_BACKWARD); 318 break; 319 case EditorInfo.IME_ACTION_DONE: 320 WebViewClassic.this.hideSoftKeyboard(); 321 break; 322 case EditorInfo.IME_ACTION_GO: 323 case EditorInfo.IME_ACTION_SEARCH: 324 WebViewClassic.this.hideSoftKeyboard(); 325 String text = getEditable().toString(); 326 passToJavaScript(text, new KeyEvent(KeyEvent.ACTION_DOWN, 327 KeyEvent.KEYCODE_ENTER)); 328 passToJavaScript(text, new KeyEvent(KeyEvent.ACTION_UP, 329 KeyEvent.KEYCODE_ENTER)); 330 break; 331 332 default: 333 handled = super.performEditorAction(editorAction); 334 break; 335 } 336 337 return handled; 338 } 339 340 public void initEditorInfo(WebViewCore.TextFieldInitData initData) { 341 int type = initData.mType; 342 int inputType = InputType.TYPE_CLASS_TEXT 343 | InputType.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT; 344 int imeOptions = EditorInfo.IME_FLAG_NO_EXTRACT_UI 345 | EditorInfo.IME_FLAG_NO_FULLSCREEN; 346 if (!initData.mIsSpellCheckEnabled) { 347 inputType |= InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS; 348 } 349 if (WebTextView.TEXT_AREA != type) { 350 if (initData.mIsTextFieldNext) { 351 imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT; 352 } 353 if (initData.mIsTextFieldPrev) { 354 imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS; 355 } 356 } 357 switch (type) { 358 case WebTextView.NORMAL_TEXT_FIELD: 359 imeOptions |= EditorInfo.IME_ACTION_GO; 360 break; 361 case WebTextView.TEXT_AREA: 362 inputType |= InputType.TYPE_TEXT_FLAG_MULTI_LINE 363 | InputType.TYPE_TEXT_FLAG_CAP_SENTENCES 364 | InputType.TYPE_TEXT_FLAG_AUTO_CORRECT; 365 imeOptions |= EditorInfo.IME_ACTION_NONE; 366 break; 367 case WebTextView.PASSWORD: 368 inputType |= EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 369 imeOptions |= EditorInfo.IME_ACTION_GO; 370 break; 371 case WebTextView.SEARCH: 372 imeOptions |= EditorInfo.IME_ACTION_SEARCH; 373 break; 374 case WebTextView.EMAIL: 375 // inputType needs to be overwritten because of the different text variation. 376 inputType = InputType.TYPE_CLASS_TEXT 377 | InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS; 378 imeOptions |= EditorInfo.IME_ACTION_GO; 379 break; 380 case WebTextView.NUMBER: 381 // inputType needs to be overwritten because of the different class. 382 inputType = InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_NORMAL 383 | InputType.TYPE_NUMBER_FLAG_SIGNED | InputType.TYPE_NUMBER_FLAG_DECIMAL; 384 // Number and telephone do not have both a Tab key and an 385 // action, so set the action to NEXT 386 imeOptions |= EditorInfo.IME_ACTION_NEXT; 387 break; 388 case WebTextView.TELEPHONE: 389 // inputType needs to be overwritten because of the different class. 390 inputType = InputType.TYPE_CLASS_PHONE; 391 imeOptions |= EditorInfo.IME_ACTION_NEXT; 392 break; 393 case WebTextView.URL: 394 // TYPE_TEXT_VARIATION_URI prevents Tab key from showing, so 395 // exclude it for now. 396 imeOptions |= EditorInfo.IME_ACTION_GO; 397 inputType |= InputType.TYPE_TEXT_VARIATION_URI; 398 break; 399 default: 400 imeOptions |= EditorInfo.IME_ACTION_GO; 401 break; 402 } 403 mHint = initData.mLabel; 404 mInputType = inputType; 405 mImeOptions = imeOptions; 406 mMaxLength = initData.mMaxLength; 407 mIsAutoCompleteEnabled = initData.mIsAutoCompleteEnabled; 408 mName = initData.mName; 409 mAutoCompletePopup.clearAdapter(); 410 } 411 412 public void setupEditorInfo(EditorInfo outAttrs) { 413 outAttrs.inputType = mInputType; 414 outAttrs.imeOptions = mImeOptions; 415 outAttrs.hintText = mHint; 416 outAttrs.initialCapsMode = getCursorCapsMode(InputType.TYPE_CLASS_TEXT); 417 } 418 419 /** 420 * Sends a text change to webkit indirectly. If it is a single- 421 * character add or delete, it sends it as a key stroke. If it cannot 422 * be represented as a key stroke, it sends it as a field change. 423 * @param start The start offset (inclusive) of the text being changed. 424 * @param end The end offset (exclusive) of the text being changed. 425 * @param text The new text to replace the changed text. 426 */ 427 private void setNewText(int start, int end, CharSequence text) { 428 mIsKeySentByMe = true; 429 Editable editable = getEditable(); 430 CharSequence original = editable.subSequence(start, end); 431 boolean isCharacterAdd = false; 432 boolean isCharacterDelete = false; 433 int textLength = text.length(); 434 int originalLength = original.length(); 435 if (textLength > originalLength) { 436 isCharacterAdd = (textLength == originalLength + 1) 437 && TextUtils.regionMatches(text, 0, original, 0, 438 originalLength); 439 } else if (originalLength > textLength) { 440 isCharacterDelete = (textLength == originalLength - 1) 441 && TextUtils.regionMatches(text, 0, original, 0, 442 textLength); 443 } 444 if (isCharacterAdd) { 445 sendCharacter(text.charAt(textLength - 1)); 446 } else if (isCharacterDelete) { 447 sendKey(KeyEvent.KEYCODE_DEL); 448 } else if ((textLength != originalLength) || 449 !TextUtils.regionMatches(text, 0, original, 0, 450 textLength)) { 451 // Send a message so that key strokes and text replacement 452 // do not come out of order. 453 Message replaceMessage = mPrivateHandler.obtainMessage( 454 REPLACE_TEXT, start, end, text.toString()); 455 mPrivateHandler.sendMessage(replaceMessage); 456 } 457 if (mAutoCompletePopup != null) { 458 StringBuilder newText = new StringBuilder(); 459 newText.append(editable.subSequence(0, start)); 460 newText.append(text); 461 newText.append(editable.subSequence(end, editable.length())); 462 mAutoCompletePopup.setText(newText.toString()); 463 } 464 mIsKeySentByMe = false; 465 } 466 467 /** 468 * Send a single character to the WebView as a key down and up event. 469 * @param c The character to be sent. 470 */ 471 private void sendCharacter(char c) { 472 if (mKeyCharacterMap == null) { 473 mKeyCharacterMap = KeyCharacterMap.load(KeyCharacterMap.VIRTUAL_KEYBOARD); 474 } 475 char[] chars = new char[1]; 476 chars[0] = c; 477 KeyEvent[] events = mKeyCharacterMap.getEvents(chars); 478 if (events != null) { 479 for (KeyEvent event : events) { 480 sendKeyEvent(event); 481 } 482 } else { 483 Message msg = mPrivateHandler.obtainMessage(KEY_PRESS, (int) c, 0); 484 mPrivateHandler.sendMessage(msg); 485 } 486 } 487 488 /** 489 * Send a key event for a specific key code, not a standard 490 * unicode character. 491 * @param keyCode The key code to send. 492 */ 493 private void sendKey(int keyCode) { 494 long eventTime = SystemClock.uptimeMillis(); 495 sendKeyEvent(new KeyEvent(eventTime, eventTime, 496 KeyEvent.ACTION_DOWN, keyCode, 0, 0, 497 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 498 KeyEvent.FLAG_SOFT_KEYBOARD)); 499 sendKeyEvent(new KeyEvent(SystemClock.uptimeMillis(), eventTime, 500 KeyEvent.ACTION_UP, keyCode, 0, 0, 501 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 502 KeyEvent.FLAG_SOFT_KEYBOARD)); 503 } 504 505 private CharSequence limitReplaceTextByMaxLength(CharSequence text, 506 int numReplaced) { 507 if (mMaxLength > 0) { 508 Editable editable = getEditable(); 509 int maxReplace = mMaxLength - editable.length() + numReplaced; 510 if (maxReplace < text.length()) { 511 maxReplace = Math.max(maxReplace, 0); 512 // New length is greater than the maximum. trim it down. 513 text = text.subSequence(0, maxReplace); 514 } 515 } 516 return text; 517 } 518 519 private void restartInput() { 520 InputMethodManager imm = InputMethodManager.peekInstance(); 521 if (imm != null) { 522 // Since the text has changed, do not allow the IME to replace the 523 // existing text as though it were a completion. 524 imm.restartInput(mWebView); 525 } 526 } 527 } 528 529 private class PastePopupWindow extends PopupWindow implements View.OnClickListener { 530 private ViewGroup mContentView; 531 private TextView mPasteTextView; 532 533 public PastePopupWindow() { 534 super(mContext, null, 535 com.android.internal.R.attr.textSelectHandleWindowStyle); 536 setClippingEnabled(true); 537 LinearLayout linearLayout = new LinearLayout(mContext); 538 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 539 mContentView = linearLayout; 540 mContentView.setBackgroundResource( 541 com.android.internal.R.drawable.text_edit_paste_window); 542 543 LayoutInflater inflater = (LayoutInflater)mContext. 544 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 545 546 ViewGroup.LayoutParams wrapContent = new ViewGroup.LayoutParams( 547 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 548 549 mPasteTextView = (TextView) inflater.inflate( 550 com.android.internal.R.layout.text_edit_action_popup_text, null); 551 mPasteTextView.setLayoutParams(wrapContent); 552 mContentView.addView(mPasteTextView); 553 mPasteTextView.setText(com.android.internal.R.string.paste); 554 mPasteTextView.setOnClickListener(this); 555 this.setContentView(mContentView); 556 } 557 558 public void show(Point cursorBottom, Point cursorTop, 559 int windowLeft, int windowTop) { 560 measureContent(); 561 562 int width = mContentView.getMeasuredWidth(); 563 int height = mContentView.getMeasuredHeight(); 564 int y = cursorTop.y - height; 565 int x = cursorTop.x - (width / 2); 566 if (y < windowTop) { 567 // There's not enough room vertically, move it below the 568 // handle. 569 ensureSelectionHandles(); 570 y = cursorBottom.y + mSelectHandleCenter.getIntrinsicHeight(); 571 x = cursorBottom.x - (width / 2); 572 } 573 if (x < windowLeft) { 574 x = windowLeft; 575 } 576 if (!isShowing()) { 577 showAtLocation(mWebView, Gravity.NO_GRAVITY, x, y); 578 } 579 update(x, y, width, height); 580 } 581 582 public void hide() { 583 dismiss(); 584 } 585 586 @Override 587 public void onClick(View view) { 588 pasteFromClipboard(); 589 selectionDone(); 590 } 591 592 protected void measureContent() { 593 final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics(); 594 mContentView.measure( 595 View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, 596 View.MeasureSpec.AT_MOST), 597 View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, 598 View.MeasureSpec.AT_MOST)); 599 } 600 } 601 602 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 603 // the screen all-the-time. Good for profiling our drawing code 604 static private final boolean AUTO_REDRAW_HACK = false; 605 606 // The rate at which edit text is scrolled in content pixels per millisecond 607 static private final float TEXT_SCROLL_RATE = 0.01f; 608 609 // The presumed scroll rate for the first scroll of edit text 610 static private final long TEXT_SCROLL_FIRST_SCROLL_MS = 16; 611 612 // Buffer pixels of the caret rectangle when moving edit text into view 613 // after resize. 614 static private final int EDIT_RECT_BUFFER = 10; 615 616 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 617 private boolean mAutoRedraw; 618 619 // Reference to the AlertDialog displayed by InvokeListBox. 620 // It's used to dismiss the dialog in destroy if not done before. 621 private AlertDialog mListBoxDialog = null; 622 623 static final String LOGTAG = "webview"; 624 625 private ZoomManager mZoomManager; 626 627 private final Rect mInvScreenRect = new Rect(); 628 private final Rect mScreenRect = new Rect(); 629 private final RectF mVisibleContentRect = new RectF(); 630 private boolean mIsWebViewVisible = true; 631 WebViewInputConnection mInputConnection = null; 632 private int mFieldPointer; 633 private PastePopupWindow mPasteWindow; 634 private AutoCompletePopup mAutoCompletePopup; 635 Rect mEditTextContentBounds = new Rect(); 636 Rect mEditTextContent = new Rect(); 637 int mEditTextLayerId; 638 boolean mIsEditingText = false; 639 ArrayList<Message> mBatchedTextChanges = new ArrayList<Message>(); 640 boolean mIsBatchingTextChanges = false; 641 private long mLastEditScroll = 0; 642 643 private static class OnTrimMemoryListener implements ComponentCallbacks2 { 644 private static OnTrimMemoryListener sInstance = null; 645 646 static void init(Context c) { 647 if (sInstance == null) { 648 sInstance = new OnTrimMemoryListener(c.getApplicationContext()); 649 } 650 } 651 652 private OnTrimMemoryListener(Context c) { 653 c.registerComponentCallbacks(this); 654 } 655 656 @Override 657 public void onConfigurationChanged(Configuration newConfig) { 658 // Ignore 659 } 660 661 @Override 662 public void onLowMemory() { 663 // Ignore 664 } 665 666 @Override 667 public void onTrimMemory(int level) { 668 if (DebugFlags.WEB_VIEW) { 669 Log.d("WebView", "onTrimMemory: " + level); 670 } 671 // When framework reset EGL context during high memory pressure, all 672 // the existing GL resources for the html5 video will be destroyed 673 // at native side. 674 // Here we just need to clean up the Surface Texture which is static. 675 if (level >= TRIM_MEMORY_UI_HIDDEN) { 676 HTML5VideoInline.cleanupSurfaceTexture(); 677 } 678 WebViewClassic.nativeOnTrimMemory(level); 679 } 680 681 } 682 683 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 684 private CallbackProxy mCallbackProxy; 685 686 private WebViewDatabaseClassic mDatabase; 687 688 // SSL certificate for the main top-level page (if secure) 689 private SslCertificate mCertificate; 690 691 // Native WebView pointer that is 0 until the native object has been 692 // created. 693 private int mNativeClass; 694 // This would be final but it needs to be set to null when the WebView is 695 // destroyed. 696 private WebViewCore mWebViewCore; 697 // Handler for dispatching UI messages. 698 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 699 // Used to ignore changes to webkit text that arrives to the UI side after 700 // more key events. 701 private int mTextGeneration; 702 703 /* package */ void incrementTextGeneration() { mTextGeneration++; } 704 705 // Used by WebViewCore to create child views. 706 /* package */ ViewManager mViewManager; 707 708 // Used to display in full screen mode 709 PluginFullScreenHolder mFullScreenHolder; 710 711 /** 712 * Position of the last touch event in pixels. 713 * Use integer to prevent loss of dragging delta calculation accuracy; 714 * which was done in float and converted to integer, and resulted in gradual 715 * and compounding touch position and view dragging mismatch. 716 */ 717 private int mLastTouchX; 718 private int mLastTouchY; 719 private int mStartTouchX; 720 private int mStartTouchY; 721 private float mAverageAngle; 722 723 /** 724 * Time of the last touch event. 725 */ 726 private long mLastTouchTime; 727 728 /** 729 * Time of the last time sending touch event to WebViewCore 730 */ 731 private long mLastSentTouchTime; 732 733 /** 734 * The minimum elapsed time before sending another ACTION_MOVE event to 735 * WebViewCore. This really should be tuned for each type of the devices. 736 * For example in Google Map api test case, it takes Dream device at least 737 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 738 * triggering the layout and drawing the picture. While the same process 739 * takes 60+ms on the current high speed device. If we make 740 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 741 * to WebViewCore queue and the real layout and draw events will be pushed 742 * to further, which slows down the refresh rate. Choose 50 to favor the 743 * current high speed devices. For Dream like devices, 100 is a better 744 * choice. Maybe make this in the buildspec later. 745 * (Update 12/14/2010: changed to 0 since current device should be able to 746 * handle the raw events and Map team voted to have the raw events too. 747 */ 748 private static final int TOUCH_SENT_INTERVAL = 0; 749 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 750 751 /** 752 * Helper class to get velocity for fling 753 */ 754 VelocityTracker mVelocityTracker; 755 private int mMaximumFling; 756 private float mLastVelocity; 757 private float mLastVelX; 758 private float mLastVelY; 759 760 // The id of the native layer being scrolled. 761 private int mCurrentScrollingLayerId; 762 private Rect mScrollingLayerRect = new Rect(); 763 764 // only trigger accelerated fling if the new velocity is at least 765 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 766 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 767 768 /** 769 * Touch mode 770 * TODO: Some of this is now unnecessary as it is handled by 771 * WebInputTouchDispatcher (such as click, long press, and double tap). 772 */ 773 private int mTouchMode = TOUCH_DONE_MODE; 774 private static final int TOUCH_INIT_MODE = 1; 775 private static final int TOUCH_DRAG_START_MODE = 2; 776 private static final int TOUCH_DRAG_MODE = 3; 777 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 778 private static final int TOUCH_SHORTPRESS_MODE = 5; 779 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 780 private static final int TOUCH_DONE_MODE = 7; 781 private static final int TOUCH_PINCH_DRAG = 8; 782 private static final int TOUCH_DRAG_LAYER_MODE = 9; 783 private static final int TOUCH_DRAG_TEXT_MODE = 10; 784 785 // true when the touch movement exceeds the slop 786 private boolean mConfirmMove; 787 private boolean mTouchInEditText; 788 789 // Whether or not to draw the cursor ring. 790 private boolean mDrawCursorRing = true; 791 792 // true if onPause has been called (and not onResume) 793 private boolean mIsPaused; 794 795 private HitTestResult mInitialHitTestResult; 796 private WebKitHitTest mFocusedNode; 797 798 /** 799 * Customizable constant 800 */ 801 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 802 private int mTouchSlopSquare; 803 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 804 private int mDoubleTapSlopSquare; 805 // pre-computed density adjusted navigation slop 806 private int mNavSlop; 807 // This should be ViewConfiguration.getTapTimeout() 808 // But system time out is 100ms, which is too short for the browser. 809 // In the browser, if it switches out of tap too soon, jump tap won't work. 810 // In addition, a double tap on a trackpad will always have a duration of 811 // 300ms, so this value must be at least that (otherwise we will timeout the 812 // first tap and convert it to a long press). 813 private static final int TAP_TIMEOUT = 300; 814 // This should be ViewConfiguration.getLongPressTimeout() 815 // But system time out is 500ms, which is too short for the browser. 816 // With a short timeout, it's difficult to treat trigger a short press. 817 private static final int LONG_PRESS_TIMEOUT = 1000; 818 // needed to avoid flinging after a pause of no movement 819 private static final int MIN_FLING_TIME = 250; 820 // draw unfiltered after drag is held without movement 821 private static final int MOTIONLESS_TIME = 100; 822 // The amount of content to overlap between two screens when going through 823 // pages with the space bar, in pixels. 824 private static final int PAGE_SCROLL_OVERLAP = 24; 825 826 /** 827 * These prevent calling requestLayout if either dimension is fixed. This 828 * depends on the layout parameters and the measure specs. 829 */ 830 boolean mWidthCanMeasure; 831 boolean mHeightCanMeasure; 832 833 // Remember the last dimensions we sent to the native side so we can avoid 834 // sending the same dimensions more than once. 835 int mLastWidthSent; 836 int mLastHeightSent; 837 // Since view height sent to webkit could be fixed to avoid relayout, this 838 // value records the last sent actual view height. 839 int mLastActualHeightSent; 840 841 private int mContentWidth; // cache of value from WebViewCore 842 private int mContentHeight; // cache of value from WebViewCore 843 844 // Need to have the separate control for horizontal and vertical scrollbar 845 // style than the View's single scrollbar style 846 private boolean mOverlayHorizontalScrollbar = true; 847 private boolean mOverlayVerticalScrollbar = false; 848 849 // our standard speed. this way small distances will be traversed in less 850 // time than large distances, but we cap the duration, so that very large 851 // distances won't take too long to get there. 852 private static final int STD_SPEED = 480; // pixels per second 853 // time for the longest scroll animation 854 private static final int MAX_DURATION = 750; // milliseconds 855 856 // Used by OverScrollGlow 857 OverScroller mScroller; 858 Scroller mEditTextScroller; 859 860 private boolean mInOverScrollMode = false; 861 private static Paint mOverScrollBackground; 862 private static Paint mOverScrollBorder; 863 864 private boolean mWrapContent; 865 private static final int MOTIONLESS_FALSE = 0; 866 private static final int MOTIONLESS_PENDING = 1; 867 private static final int MOTIONLESS_TRUE = 2; 868 private static final int MOTIONLESS_IGNORE = 3; 869 private int mHeldMotionless; 870 871 // An instance for injecting accessibility in WebViews with disabled 872 // JavaScript or ones for which no accessibility script exists 873 private AccessibilityInjector mAccessibilityInjector; 874 875 // flag indicating if accessibility script is injected so we 876 // know to handle Shift and arrows natively first 877 private boolean mAccessibilityScriptInjected; 878 879 880 /** 881 * How long the caret handle will last without being touched. 882 */ 883 private static final long CARET_HANDLE_STAMINA_MS = 3000; 884 885 private Drawable mSelectHandleLeft; 886 private Drawable mSelectHandleRight; 887 private Drawable mSelectHandleCenter; 888 private Point mSelectHandleLeftOffset; 889 private Point mSelectHandleRightOffset; 890 private Point mSelectHandleCenterOffset; 891 private Point mSelectCursorBase = new Point(); 892 private int mSelectCursorBaseLayerId; 893 private QuadF mSelectCursorBaseTextQuad = new QuadF(); 894 private Point mSelectCursorExtent = new Point(); 895 private int mSelectCursorExtentLayerId; 896 private QuadF mSelectCursorExtentTextQuad = new QuadF(); 897 private Point mSelectDraggingCursor; 898 private Point mSelectDraggingOffset; 899 private QuadF mSelectDraggingTextQuad; 900 private boolean mIsCaretSelection; 901 static final int HANDLE_ID_START = 0; 902 static final int HANDLE_ID_END = 1; 903 static final int HANDLE_ID_BASE = 2; 904 static final int HANDLE_ID_EXTENT = 3; 905 906 // the color used to highlight the touch rectangles 907 static final int HIGHLIGHT_COLOR = 0x6633b5e5; 908 // the region indicating where the user touched on the screen 909 private Region mTouchHighlightRegion = new Region(); 910 // the paint for the touch highlight 911 private Paint mTouchHightlightPaint = new Paint(); 912 // debug only 913 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 914 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 915 private Paint mTouchCrossHairColor; 916 private int mTouchHighlightX; 917 private int mTouchHighlightY; 918 private boolean mShowTapHighlight; 919 920 // Basically this proxy is used to tell the Video to update layer tree at 921 // SetBaseLayer time and to pause when WebView paused. 922 private HTML5VideoViewProxy mHTML5VideoViewProxy; 923 924 // If we are using a set picture, don't send view updates to webkit 925 private boolean mBlockWebkitViewMessages = false; 926 927 // cached value used to determine if we need to switch drawing models 928 private boolean mHardwareAccelSkia = false; 929 930 /* 931 * Private message ids 932 */ 933 private static final int REMEMBER_PASSWORD = 1; 934 private static final int NEVER_REMEMBER_PASSWORD = 2; 935 private static final int SWITCH_TO_SHORTPRESS = 3; 936 private static final int SWITCH_TO_LONGPRESS = 4; 937 private static final int RELEASE_SINGLE_TAP = 5; 938 private static final int REQUEST_FORM_DATA = 6; 939 private static final int DRAG_HELD_MOTIONLESS = 8; 940 private static final int AWAKEN_SCROLL_BARS = 9; 941 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 942 private static final int SCROLL_SELECT_TEXT = 11; 943 944 945 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 946 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 947 948 /* 949 * Package message ids 950 */ 951 static final int SCROLL_TO_MSG_ID = 101; 952 static final int NEW_PICTURE_MSG_ID = 105; 953 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 954 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 955 static final int UPDATE_ZOOM_RANGE = 109; 956 static final int TAKE_FOCUS = 110; 957 static final int CLEAR_TEXT_ENTRY = 111; 958 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 959 static final int SHOW_RECT_MSG_ID = 113; 960 static final int LONG_PRESS_CENTER = 114; 961 static final int PREVENT_TOUCH_ID = 115; 962 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 963 // obj=Rect in doc coordinates 964 static final int INVAL_RECT_MSG_ID = 117; 965 static final int REQUEST_KEYBOARD = 118; 966 static final int SHOW_FULLSCREEN = 120; 967 static final int HIDE_FULLSCREEN = 121; 968 static final int UPDATE_MATCH_COUNT = 126; 969 static final int CENTER_FIT_RECT = 127; 970 static final int SET_SCROLLBAR_MODES = 129; 971 static final int SELECTION_STRING_CHANGED = 130; 972 static final int HIT_TEST_RESULT = 131; 973 static final int SAVE_WEBARCHIVE_FINISHED = 132; 974 975 static final int SET_AUTOFILLABLE = 133; 976 static final int AUTOFILL_COMPLETE = 134; 977 978 static final int SCREEN_ON = 136; 979 static final int ENTER_FULLSCREEN_VIDEO = 137; 980 static final int UPDATE_ZOOM_DENSITY = 139; 981 static final int EXIT_FULLSCREEN_VIDEO = 140; 982 983 static final int COPY_TO_CLIPBOARD = 141; 984 static final int INIT_EDIT_FIELD = 142; 985 static final int REPLACE_TEXT = 143; 986 static final int CLEAR_CARET_HANDLE = 144; 987 static final int KEY_PRESS = 145; 988 static final int RELOCATE_AUTO_COMPLETE_POPUP = 146; 989 static final int FOCUS_NODE_CHANGED = 147; 990 static final int AUTOFILL_FORM = 148; 991 static final int SCROLL_EDIT_TEXT = 149; 992 static final int EDIT_TEXT_SIZE_CHANGED = 150; 993 static final int SHOW_CARET_HANDLE = 151; 994 static final int UPDATE_CONTENT_BOUNDS = 152; 995 996 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 997 private static final int LAST_PACKAGE_MSG_ID = HIT_TEST_RESULT; 998 999 static final String[] HandlerPrivateDebugString = { 1000 "REMEMBER_PASSWORD", // = 1; 1001 "NEVER_REMEMBER_PASSWORD", // = 2; 1002 "SWITCH_TO_SHORTPRESS", // = 3; 1003 "SWITCH_TO_LONGPRESS", // = 4; 1004 "RELEASE_SINGLE_TAP", // = 5; 1005 "REQUEST_FORM_DATA", // = 6; 1006 "RESUME_WEBCORE_PRIORITY", // = 7; 1007 "DRAG_HELD_MOTIONLESS", // = 8; 1008 "AWAKEN_SCROLL_BARS", // = 9; 1009 "PREVENT_DEFAULT_TIMEOUT", // = 10; 1010 "SCROLL_SELECT_TEXT" // = 11; 1011 }; 1012 1013 static final String[] HandlerPackageDebugString = { 1014 "SCROLL_TO_MSG_ID", // = 101; 1015 "102", // = 102; 1016 "103", // = 103; 1017 "104", // = 104; 1018 "NEW_PICTURE_MSG_ID", // = 105; 1019 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 1020 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 1021 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 1022 "UPDATE_ZOOM_RANGE", // = 109; 1023 "UNHANDLED_NAV_KEY", // = 110; 1024 "CLEAR_TEXT_ENTRY", // = 111; 1025 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 1026 "SHOW_RECT_MSG_ID", // = 113; 1027 "LONG_PRESS_CENTER", // = 114; 1028 "PREVENT_TOUCH_ID", // = 115; 1029 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 1030 "INVAL_RECT_MSG_ID", // = 117; 1031 "REQUEST_KEYBOARD", // = 118; 1032 "DO_MOTION_UP", // = 119; 1033 "SHOW_FULLSCREEN", // = 120; 1034 "HIDE_FULLSCREEN", // = 121; 1035 "DOM_FOCUS_CHANGED", // = 122; 1036 "REPLACE_BASE_CONTENT", // = 123; 1037 "RETURN_LABEL", // = 125; 1038 "UPDATE_MATCH_COUNT", // = 126; 1039 "CENTER_FIT_RECT", // = 127; 1040 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 1041 "SET_SCROLLBAR_MODES", // = 129; 1042 "SELECTION_STRING_CHANGED", // = 130; 1043 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 1044 "SAVE_WEBARCHIVE_FINISHED", // = 132; 1045 "SET_AUTOFILLABLE", // = 133; 1046 "AUTOFILL_COMPLETE", // = 134; 1047 "SELECT_AT", // = 135; 1048 "SCREEN_ON", // = 136; 1049 "ENTER_FULLSCREEN_VIDEO", // = 137; 1050 "UPDATE_SELECTION", // = 138; 1051 "UPDATE_ZOOM_DENSITY" // = 139; 1052 }; 1053 1054 // If the site doesn't use the viewport meta tag to specify the viewport, 1055 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 1056 static final int DEFAULT_VIEWPORT_WIDTH = 980; 1057 1058 // normally we try to fit the content to the minimum preferred width 1059 // calculated by the Webkit. To avoid the bad behavior when some site's 1060 // minimum preferred width keeps growing when changing the viewport width or 1061 // the minimum preferred width is huge, an upper limit is needed. 1062 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 1063 1064 // initial scale in percent. 0 means using default. 1065 private int mInitialScaleInPercent = 0; 1066 1067 // Whether or not a scroll event should be sent to webkit. This is only set 1068 // to false when restoring the scroll position. 1069 private boolean mSendScrollEvent = true; 1070 1071 private int mSnapScrollMode = SNAP_NONE; 1072 private static final int SNAP_NONE = 0; 1073 private static final int SNAP_LOCK = 1; // not a separate state 1074 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 1075 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 1076 private boolean mSnapPositive; 1077 1078 // keep these in sync with their counterparts in WebView.cpp 1079 private static final int DRAW_EXTRAS_NONE = 0; 1080 private static final int DRAW_EXTRAS_SELECTION = 1; 1081 private static final int DRAW_EXTRAS_CURSOR_RING = 2; 1082 1083 // keep this in sync with WebCore:ScrollbarMode in WebKit 1084 private static final int SCROLLBAR_AUTO = 0; 1085 private static final int SCROLLBAR_ALWAYSOFF = 1; 1086 // as we auto fade scrollbar, this is ignored. 1087 private static final int SCROLLBAR_ALWAYSON = 2; 1088 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 1089 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 1090 1091 // constants for determining script injection strategy 1092 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 1093 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 1094 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 1095 1096 // the alias via which accessibility JavaScript interface is exposed 1097 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 1098 1099 // Template for JavaScript that injects a screen-reader. 1100 private static final String ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE = 1101 "javascript:(function() {" + 1102 " var chooser = document.createElement('script');" + 1103 " chooser.type = 'text/javascript';" + 1104 " chooser.src = '%1s';" + 1105 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 1106 " })();"; 1107 1108 // Regular expression that matches the "axs" URL parameter. 1109 // The value of 0 means the accessibility script is opted out 1110 // The value of 1 means the accessibility script is already injected 1111 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 1112 1113 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 1114 private TextToSpeech mTextToSpeech; 1115 1116 // variable to cache the above pattern in case accessibility is enabled. 1117 private Pattern mMatchAxsUrlParameterPattern; 1118 1119 /** 1120 * Max distance to overscroll by in pixels. 1121 * This how far content can be pulled beyond its normal bounds by the user. 1122 */ 1123 private int mOverscrollDistance; 1124 1125 /** 1126 * Max distance to overfling by in pixels. 1127 * This is how far flinged content can move beyond the end of its normal bounds. 1128 */ 1129 private int mOverflingDistance; 1130 1131 private OverScrollGlow mOverScrollGlow; 1132 1133 // Used to match key downs and key ups 1134 private Vector<Integer> mKeysPressed; 1135 1136 /* package */ static boolean mLogEvent = true; 1137 1138 // for event log 1139 private long mLastTouchUpTime = 0; 1140 1141 private WebViewCore.AutoFillData mAutoFillData; 1142 1143 private static boolean sNotificationsEnabled = true; 1144 1145 /** 1146 * URI scheme for telephone number 1147 */ 1148 public static final String SCHEME_TEL = "tel:"; 1149 /** 1150 * URI scheme for email address 1151 */ 1152 public static final String SCHEME_MAILTO = "mailto:"; 1153 /** 1154 * URI scheme for map address 1155 */ 1156 public static final String SCHEME_GEO = "geo:0,0?q="; 1157 1158 private int mBackgroundColor = Color.WHITE; 1159 1160 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 1161 private int mAutoScrollX = 0; 1162 private int mAutoScrollY = 0; 1163 private int mMinAutoScrollX = 0; 1164 private int mMaxAutoScrollX = 0; 1165 private int mMinAutoScrollY = 0; 1166 private int mMaxAutoScrollY = 0; 1167 private Rect mScrollingLayerBounds = new Rect(); 1168 private boolean mSentAutoScrollMessage = false; 1169 1170 // used for serializing asynchronously handled touch events. 1171 private WebViewInputDispatcher mInputDispatcher; 1172 1173 // Used to track whether picture updating was paused due to a window focus change. 1174 private boolean mPictureUpdatePausedForFocusChange = false; 1175 1176 // Used to notify listeners of a new picture. 1177 private PictureListener mPictureListener; 1178 1179 // Used to notify listeners about find-on-page results. 1180 private WebView.FindListener mFindListener; 1181 1182 // Used to prevent resending save password message 1183 private Message mResumeMsg; 1184 1185 /** 1186 * Refer to {@link WebView#requestFocusNodeHref(Message)} for more information 1187 */ 1188 static class FocusNodeHref { 1189 static final String TITLE = "title"; 1190 static final String URL = "url"; 1191 static final String SRC = "src"; 1192 } 1193 1194 public WebViewClassic(WebView webView, WebView.PrivateAccess privateAccess) { 1195 mWebView = webView; 1196 mWebViewPrivate = privateAccess; 1197 mContext = webView.getContext(); 1198 } 1199 1200 /** 1201 * See {@link WebViewProvider#init(Map, boolean)} 1202 */ 1203 @Override 1204 public void init(Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1205 Context context = mContext; 1206 1207 // Used by the chrome stack to find application paths 1208 JniUtil.setContext(context); 1209 1210 mCallbackProxy = new CallbackProxy(context, this); 1211 mViewManager = new ViewManager(this); 1212 L10nUtils.setApplicationContext(context.getApplicationContext()); 1213 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1214 mDatabase = WebViewDatabaseClassic.getInstance(context); 1215 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1216 mZoomManager = new ZoomManager(this, mCallbackProxy); 1217 1218 /* The init method must follow the creation of certain member variables, 1219 * such as the mZoomManager. 1220 */ 1221 init(); 1222 setupPackageListener(context); 1223 setupProxyListener(context); 1224 setupTrustStorageListener(context); 1225 updateMultiTouchSupport(context); 1226 1227 if (privateBrowsing) { 1228 startPrivateBrowsing(); 1229 } 1230 1231 mAutoFillData = new WebViewCore.AutoFillData(); 1232 mEditTextScroller = new Scroller(context); 1233 } 1234 1235 // WebViewProvider bindings 1236 1237 static class Factory implements WebViewFactoryProvider, WebViewFactoryProvider.Statics { 1238 @Override 1239 public String findAddress(String addr) { 1240 return WebViewClassic.findAddress(addr); 1241 } 1242 @Override 1243 public void setPlatformNotificationsEnabled(boolean enable) { 1244 if (enable) { 1245 WebViewClassic.enablePlatformNotifications(); 1246 } else { 1247 WebViewClassic.disablePlatformNotifications(); 1248 } 1249 } 1250 1251 @Override 1252 public Statics getStatics() { return this; } 1253 1254 @Override 1255 public WebViewProvider createWebView(WebView webView, WebView.PrivateAccess privateAccess) { 1256 return new WebViewClassic(webView, privateAccess); 1257 } 1258 1259 @Override 1260 public GeolocationPermissions getGeolocationPermissions() { 1261 return GeolocationPermissionsClassic.getInstance(); 1262 } 1263 1264 @Override 1265 public CookieManager getCookieManager() { 1266 return CookieManagerClassic.getInstance(); 1267 } 1268 1269 @Override 1270 public WebIconDatabase getWebIconDatabase() { 1271 return WebIconDatabaseClassic.getInstance(); 1272 } 1273 1274 @Override 1275 public WebStorage getWebStorage() { 1276 return WebStorageClassic.getInstance(); 1277 } 1278 1279 @Override 1280 public WebViewDatabase getWebViewDatabase(Context context) { 1281 return WebViewDatabaseClassic.getInstance(context); 1282 } 1283 } 1284 1285 private void onHandleUiEvent(MotionEvent event, int eventType, int flags) { 1286 switch (eventType) { 1287 case WebViewInputDispatcher.EVENT_TYPE_LONG_PRESS: 1288 HitTestResult hitTest = getHitTestResult(); 1289 if (hitTest != null) { 1290 performLongClick(); 1291 } 1292 break; 1293 case WebViewInputDispatcher.EVENT_TYPE_DOUBLE_TAP: 1294 mZoomManager.handleDoubleTap(event.getX(), event.getY()); 1295 break; 1296 case WebViewInputDispatcher.EVENT_TYPE_TOUCH: 1297 onHandleUiTouchEvent(event); 1298 break; 1299 case WebViewInputDispatcher.EVENT_TYPE_CLICK: 1300 if (mFocusedNode != null && mFocusedNode.mIntentUrl != null) { 1301 mWebView.playSoundEffect(SoundEffectConstants.CLICK); 1302 overrideLoading(mFocusedNode.mIntentUrl); 1303 } 1304 break; 1305 } 1306 } 1307 1308 private void onHandleUiTouchEvent(MotionEvent ev) { 1309 final ScaleGestureDetector detector = 1310 mZoomManager.getMultiTouchGestureDetector(); 1311 1312 float x = ev.getX(); 1313 float y = ev.getY(); 1314 1315 if (detector != null) { 1316 detector.onTouchEvent(ev); 1317 if (detector.isInProgress()) { 1318 mLastTouchTime = ev.getEventTime(); 1319 x = detector.getFocusX(); 1320 y = detector.getFocusY(); 1321 1322 mWebView.cancelLongPress(); 1323 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 1324 if (!mZoomManager.supportsPanDuringZoom()) { 1325 return; 1326 } 1327 mTouchMode = TOUCH_DRAG_MODE; 1328 if (mVelocityTracker == null) { 1329 mVelocityTracker = VelocityTracker.obtain(); 1330 } 1331 } 1332 } 1333 1334 int action = ev.getActionMasked(); 1335 if (action == MotionEvent.ACTION_POINTER_DOWN) { 1336 cancelTouch(); 1337 action = MotionEvent.ACTION_DOWN; 1338 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 1339 // set mLastTouchX/Y to the remaining points for multi-touch. 1340 mLastTouchX = Math.round(x); 1341 mLastTouchY = Math.round(y); 1342 } else if (action == MotionEvent.ACTION_MOVE) { 1343 // negative x or y indicate it is on the edge, skip it. 1344 if (x < 0 || y < 0) { 1345 return; 1346 } 1347 } 1348 1349 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 1350 } 1351 1352 // The webview that is bound to this WebViewClassic instance. Primarily needed for supplying 1353 // as the first param in the WebViewClient and WebChromeClient callbacks. 1354 final private WebView mWebView; 1355 // Callback interface, provides priviledged access into the WebView instance. 1356 final private WebView.PrivateAccess mWebViewPrivate; 1357 // Cached reference to mWebView.getContext(), for convenience. 1358 final private Context mContext; 1359 1360 /** 1361 * @return The webview proxy that this classic webview is bound to. 1362 */ 1363 public WebView getWebView() { 1364 return mWebView; 1365 } 1366 1367 @Override 1368 public ViewDelegate getViewDelegate() { 1369 return this; 1370 } 1371 1372 @Override 1373 public ScrollDelegate getScrollDelegate() { 1374 return this; 1375 } 1376 1377 public static WebViewClassic fromWebView(WebView webView) { 1378 return webView == null ? null : (WebViewClassic) webView.getWebViewProvider(); 1379 } 1380 1381 // Accessors, purely for convenience (and to reduce code churn during webview proxy migration). 1382 int getScrollX() { 1383 return mWebView.getScrollX(); 1384 } 1385 1386 int getScrollY() { 1387 return mWebView.getScrollY(); 1388 } 1389 1390 int getWidth() { 1391 return mWebView.getWidth(); 1392 } 1393 1394 int getHeight() { 1395 return mWebView.getHeight(); 1396 } 1397 1398 Context getContext() { 1399 return mContext; 1400 } 1401 1402 void invalidate() { 1403 mWebView.invalidate(); 1404 } 1405 1406 // Setters for the Scroll X & Y, without invoking the onScrollChanged etc code paths. 1407 void setScrollXRaw(int mScrollX) { 1408 mWebViewPrivate.setScrollXRaw(mScrollX); 1409 } 1410 1411 void setScrollYRaw(int mScrollY) { 1412 mWebViewPrivate.setScrollYRaw(mScrollY); 1413 } 1414 1415 private static class TrustStorageListener extends BroadcastReceiver { 1416 @Override 1417 public void onReceive(Context context, Intent intent) { 1418 if (intent.getAction().equals(KeyChain.ACTION_STORAGE_CHANGED)) { 1419 handleCertTrustChanged(); 1420 } 1421 } 1422 } 1423 private static TrustStorageListener sTrustStorageListener; 1424 1425 /** 1426 * Handles update to the trust storage. 1427 */ 1428 private static void handleCertTrustChanged() { 1429 // send a message for indicating trust storage change 1430 WebViewCore.sendStaticMessage(EventHub.TRUST_STORAGE_UPDATED, null); 1431 } 1432 1433 /* 1434 * @param context This method expects this to be a valid context. 1435 */ 1436 private static void setupTrustStorageListener(Context context) { 1437 if (sTrustStorageListener != null ) { 1438 return; 1439 } 1440 IntentFilter filter = new IntentFilter(); 1441 filter.addAction(KeyChain.ACTION_STORAGE_CHANGED); 1442 sTrustStorageListener = new TrustStorageListener(); 1443 Intent current = 1444 context.getApplicationContext().registerReceiver(sTrustStorageListener, filter); 1445 if (current != null) { 1446 handleCertTrustChanged(); 1447 } 1448 } 1449 1450 private static class ProxyReceiver extends BroadcastReceiver { 1451 @Override 1452 public void onReceive(Context context, Intent intent) { 1453 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1454 handleProxyBroadcast(intent); 1455 } 1456 } 1457 } 1458 1459 /* 1460 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1461 */ 1462 private static ProxyReceiver sProxyReceiver; 1463 1464 /* 1465 * @param context This method expects this to be a valid context 1466 */ 1467 private static synchronized void setupProxyListener(Context context) { 1468 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1469 return; 1470 } 1471 IntentFilter filter = new IntentFilter(); 1472 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1473 sProxyReceiver = new ProxyReceiver(); 1474 Intent currentProxy = context.getApplicationContext().registerReceiver( 1475 sProxyReceiver, filter); 1476 if (currentProxy != null) { 1477 handleProxyBroadcast(currentProxy); 1478 } 1479 } 1480 1481 /* 1482 * @param context This method expects this to be a valid context 1483 */ 1484 private static synchronized void disableProxyListener(Context context) { 1485 if (sProxyReceiver == null) 1486 return; 1487 1488 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1489 sProxyReceiver = null; 1490 } 1491 1492 private static void handleProxyBroadcast(Intent intent) { 1493 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1494 if (proxyProperties == null || proxyProperties.getHost() == null) { 1495 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1496 return; 1497 } 1498 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1499 } 1500 1501 /* 1502 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1503 * or ACTION_PACKAGE_REMOVED. 1504 */ 1505 private static boolean sPackageInstallationReceiverAdded = false; 1506 1507 /* 1508 * A set of Google packages we monitor for the 1509 * navigator.isApplicationInstalled() API. Add additional packages as 1510 * needed. 1511 */ 1512 private static Set<String> sGoogleApps; 1513 static { 1514 sGoogleApps = new HashSet<String>(); 1515 sGoogleApps.add("com.google.android.youtube"); 1516 } 1517 1518 private static class PackageListener extends BroadcastReceiver { 1519 @Override 1520 public void onReceive(Context context, Intent intent) { 1521 final String action = intent.getAction(); 1522 final String packageName = intent.getData().getSchemeSpecificPart(); 1523 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1524 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1525 // if it is replacing, refreshPlugins() when adding 1526 return; 1527 } 1528 1529 if (sGoogleApps.contains(packageName)) { 1530 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1531 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1532 } else { 1533 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1534 } 1535 } 1536 1537 PluginManager pm = PluginManager.getInstance(context); 1538 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1539 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1540 } 1541 } 1542 } 1543 1544 private void setupPackageListener(Context context) { 1545 1546 /* 1547 * we must synchronize the instance check and the creation of the 1548 * receiver to ensure that only ONE receiver exists for all WebView 1549 * instances. 1550 */ 1551 synchronized (WebViewClassic.class) { 1552 1553 // if the receiver already exists then we do not need to register it 1554 // again 1555 if (sPackageInstallationReceiverAdded) { 1556 return; 1557 } 1558 1559 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1560 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1561 filter.addDataScheme("package"); 1562 BroadcastReceiver packageListener = new PackageListener(); 1563 context.getApplicationContext().registerReceiver(packageListener, filter); 1564 sPackageInstallationReceiverAdded = true; 1565 } 1566 1567 // check if any of the monitored apps are already installed 1568 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1569 1570 @Override 1571 protected Set<String> doInBackground(Void... unused) { 1572 Set<String> installedPackages = new HashSet<String>(); 1573 PackageManager pm = mContext.getPackageManager(); 1574 for (String name : sGoogleApps) { 1575 try { 1576 pm.getPackageInfo(name, 1577 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1578 installedPackages.add(name); 1579 } catch (PackageManager.NameNotFoundException e) { 1580 // package not found 1581 } 1582 } 1583 return installedPackages; 1584 } 1585 1586 // Executes on the UI thread 1587 @Override 1588 protected void onPostExecute(Set<String> installedPackages) { 1589 if (mWebViewCore != null) { 1590 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1591 } 1592 } 1593 }; 1594 task.execute(); 1595 } 1596 1597 void updateMultiTouchSupport(Context context) { 1598 mZoomManager.updateMultiTouchSupport(context); 1599 } 1600 1601 private void init() { 1602 OnTrimMemoryListener.init(mContext); 1603 mWebView.setWillNotDraw(false); 1604 mWebView.setFocusable(true); 1605 mWebView.setFocusableInTouchMode(true); 1606 mWebView.setClickable(true); 1607 mWebView.setLongClickable(true); 1608 1609 final ViewConfiguration configuration = ViewConfiguration.get(mContext); 1610 int slop = configuration.getScaledTouchSlop(); 1611 mTouchSlopSquare = slop * slop; 1612 slop = configuration.getScaledDoubleTapSlop(); 1613 mDoubleTapSlopSquare = slop * slop; 1614 final float density = mContext.getResources().getDisplayMetrics().density; 1615 // use one line height, 16 based on our current default font, for how 1616 // far we allow a touch be away from the edge of a link 1617 mNavSlop = (int) (16 * density); 1618 mZoomManager.init(density); 1619 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1620 1621 // Compute the inverse of the density squared. 1622 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1623 1624 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1625 mOverflingDistance = configuration.getScaledOverflingDistance(); 1626 1627 setScrollBarStyle(mWebViewPrivate.super_getScrollBarStyle()); 1628 // Initially use a size of two, since the user is likely to only hold 1629 // down two keys at a time (shift + another key) 1630 mKeysPressed = new Vector<Integer>(2); 1631 mHTML5VideoViewProxy = null ; 1632 } 1633 1634 @Override 1635 public boolean shouldDelayChildPressedState() { 1636 return true; 1637 } 1638 1639 /** 1640 * Adds accessibility APIs to JavaScript. 1641 * 1642 * Note: This method is responsible to performing the necessary 1643 * check if the accessibility APIs should be exposed. 1644 */ 1645 private void addAccessibilityApisToJavaScript() { 1646 if (AccessibilityManager.getInstance(mContext).isEnabled() 1647 && getSettings().getJavaScriptEnabled()) { 1648 // exposing the TTS for now ... 1649 final Context ctx = mContext; 1650 if (ctx != null) { 1651 final String packageName = ctx.getPackageName(); 1652 if (packageName != null) { 1653 mTextToSpeech = new TextToSpeech(ctx, null, null, 1654 packageName + ".**webview**", true); 1655 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1656 } 1657 } 1658 } 1659 } 1660 1661 /** 1662 * Removes accessibility APIs from JavaScript. 1663 */ 1664 private void removeAccessibilityApisFromJavaScript() { 1665 // exposing the TTS for now ... 1666 if (mTextToSpeech != null) { 1667 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1668 mTextToSpeech.shutdown(); 1669 mTextToSpeech = null; 1670 } 1671 } 1672 1673 @Override 1674 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 1675 info.setScrollable(isScrollableForAccessibility()); 1676 } 1677 1678 @Override 1679 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 1680 event.setScrollable(isScrollableForAccessibility()); 1681 event.setScrollX(getScrollX()); 1682 event.setScrollY(getScrollY()); 1683 final int convertedContentWidth = contentToViewX(getContentWidth()); 1684 final int adjustedViewWidth = getWidth() - mWebView.getPaddingLeft() 1685 - mWebView.getPaddingLeft(); 1686 event.setMaxScrollX(Math.max(convertedContentWidth - adjustedViewWidth, 0)); 1687 final int convertedContentHeight = contentToViewY(getContentHeight()); 1688 final int adjustedViewHeight = getHeight() - mWebView.getPaddingTop() 1689 - mWebView.getPaddingBottom(); 1690 event.setMaxScrollY(Math.max(convertedContentHeight - adjustedViewHeight, 0)); 1691 } 1692 1693 private boolean isScrollableForAccessibility() { 1694 return (contentToViewX(getContentWidth()) > getWidth() - mWebView.getPaddingLeft() 1695 - mWebView.getPaddingRight() 1696 || contentToViewY(getContentHeight()) > getHeight() - mWebView.getPaddingTop() 1697 - mWebView.getPaddingBottom()); 1698 } 1699 1700 @Override 1701 public void setOverScrollMode(int mode) { 1702 if (mode != View.OVER_SCROLL_NEVER) { 1703 if (mOverScrollGlow == null) { 1704 mOverScrollGlow = new OverScrollGlow(this); 1705 } 1706 } else { 1707 mOverScrollGlow = null; 1708 } 1709 } 1710 1711 /* package */ void adjustDefaultZoomDensity(int zoomDensity) { 1712 final float density = mContext.getResources().getDisplayMetrics().density 1713 * 100 / zoomDensity; 1714 updateDefaultZoomDensity(density); 1715 } 1716 1717 /* package */ void updateDefaultZoomDensity(float density) { 1718 mNavSlop = (int) (16 * density); 1719 mZoomManager.updateDefaultZoomDensity(density); 1720 } 1721 1722 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1723 String password, final Message resumeMsg) { 1724 boolean rVal = false; 1725 if (resumeMsg == null) { 1726 // null resumeMsg implies saving password silently 1727 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1728 } else { 1729 if (mResumeMsg != null) { 1730 Log.w(LOGTAG, "onSavePassword should not be called while dialog is up"); 1731 resumeMsg.sendToTarget(); 1732 return true; 1733 } 1734 mResumeMsg = resumeMsg; 1735 final Message remember = mPrivateHandler.obtainMessage( 1736 REMEMBER_PASSWORD); 1737 remember.getData().putString("host", schemePlusHost); 1738 remember.getData().putString("username", username); 1739 remember.getData().putString("password", password); 1740 remember.obj = resumeMsg; 1741 1742 final Message neverRemember = mPrivateHandler.obtainMessage( 1743 NEVER_REMEMBER_PASSWORD); 1744 neverRemember.getData().putString("host", schemePlusHost); 1745 neverRemember.getData().putString("username", username); 1746 neverRemember.getData().putString("password", password); 1747 neverRemember.obj = resumeMsg; 1748 1749 new AlertDialog.Builder(mContext) 1750 .setTitle(com.android.internal.R.string.save_password_label) 1751 .setMessage(com.android.internal.R.string.save_password_message) 1752 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1753 new DialogInterface.OnClickListener() { 1754 @Override 1755 public void onClick(DialogInterface dialog, int which) { 1756 if (mResumeMsg != null) { 1757 resumeMsg.sendToTarget(); 1758 mResumeMsg = null; 1759 } 1760 } 1761 }) 1762 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1763 new DialogInterface.OnClickListener() { 1764 @Override 1765 public void onClick(DialogInterface dialog, int which) { 1766 if (mResumeMsg != null) { 1767 remember.sendToTarget(); 1768 mResumeMsg = null; 1769 } 1770 } 1771 }) 1772 .setNegativeButton(com.android.internal.R.string.save_password_never, 1773 new DialogInterface.OnClickListener() { 1774 @Override 1775 public void onClick(DialogInterface dialog, int which) { 1776 if (mResumeMsg != null) { 1777 neverRemember.sendToTarget(); 1778 mResumeMsg = null; 1779 } 1780 } 1781 }) 1782 .setOnCancelListener(new OnCancelListener() { 1783 @Override 1784 public void onCancel(DialogInterface dialog) { 1785 if (mResumeMsg != null) { 1786 resumeMsg.sendToTarget(); 1787 mResumeMsg = null; 1788 } 1789 } 1790 }).show(); 1791 // Return true so that WebViewCore will pause while the dialog is 1792 // up. 1793 rVal = true; 1794 } 1795 return rVal; 1796 } 1797 1798 @Override 1799 public void setScrollBarStyle(int style) { 1800 if (style == View.SCROLLBARS_INSIDE_INSET 1801 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1802 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1803 } else { 1804 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1805 } 1806 } 1807 1808 /** 1809 * See {@link WebView#setHorizontalScrollbarOverlay(boolean)} 1810 */ 1811 @Override 1812 public void setHorizontalScrollbarOverlay(boolean overlay) { 1813 mOverlayHorizontalScrollbar = overlay; 1814 } 1815 1816 /** 1817 * See {@link WebView#setVerticalScrollbarOverlay(boolean) 1818 */ 1819 @Override 1820 public void setVerticalScrollbarOverlay(boolean overlay) { 1821 mOverlayVerticalScrollbar = overlay; 1822 } 1823 1824 /** 1825 * See {@link WebView#overlayHorizontalScrollbar()} 1826 */ 1827 @Override 1828 public boolean overlayHorizontalScrollbar() { 1829 return mOverlayHorizontalScrollbar; 1830 } 1831 1832 /** 1833 * See {@link WebView#overlayVerticalScrollbar()} 1834 */ 1835 @Override 1836 public boolean overlayVerticalScrollbar() { 1837 return mOverlayVerticalScrollbar; 1838 } 1839 1840 /* 1841 * Return the width of the view where the content of WebView should render 1842 * to. 1843 * Note: this can be called from WebCoreThread. 1844 */ 1845 /* package */ int getViewWidth() { 1846 if (!mWebView.isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1847 return getWidth(); 1848 } else { 1849 return Math.max(0, getWidth() - mWebView.getVerticalScrollbarWidth()); 1850 } 1851 } 1852 1853 // Interface to enable the browser to override title bar handling. 1854 public interface TitleBarDelegate { 1855 int getTitleHeight(); 1856 public void onSetEmbeddedTitleBar(final View title); 1857 } 1858 1859 /** 1860 * Returns the height (in pixels) of the embedded title bar (if any). Does not care about 1861 * scrolling 1862 */ 1863 protected int getTitleHeight() { 1864 if (mWebView instanceof TitleBarDelegate) { 1865 return ((TitleBarDelegate) mWebView).getTitleHeight(); 1866 } 1867 return 0; 1868 } 1869 1870 /** 1871 * See {@link WebView#getVisibleTitleHeight()} 1872 */ 1873 @Override 1874 @Deprecated 1875 public int getVisibleTitleHeight() { 1876 // Actually, this method returns the height of the embedded title bar if one is set via the 1877 // hidden setEmbeddedTitleBar method. 1878 return getVisibleTitleHeightImpl(); 1879 } 1880 1881 private int getVisibleTitleHeightImpl() { 1882 // need to restrict mScrollY due to over scroll 1883 return Math.max(getTitleHeight() - Math.max(0, getScrollY()), 1884 getOverlappingActionModeHeight()); 1885 } 1886 1887 private int mCachedOverlappingActionModeHeight = -1; 1888 1889 private int getOverlappingActionModeHeight() { 1890 if (mFindCallback == null) { 1891 return 0; 1892 } 1893 if (mCachedOverlappingActionModeHeight < 0) { 1894 mWebView.getGlobalVisibleRect(mGlobalVisibleRect, mGlobalVisibleOffset); 1895 mCachedOverlappingActionModeHeight = Math.max(0, 1896 mFindCallback.getActionModeGlobalBottom() - mGlobalVisibleRect.top); 1897 } 1898 return mCachedOverlappingActionModeHeight; 1899 } 1900 1901 /* 1902 * Return the height of the view where the content of WebView should render 1903 * to. Note that this excludes mTitleBar, if there is one. 1904 * Note: this can be called from WebCoreThread. 1905 */ 1906 /* package */ int getViewHeight() { 1907 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1908 } 1909 1910 int getViewHeightWithTitle() { 1911 int height = getHeight(); 1912 if (mWebView.isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1913 height -= mWebViewPrivate.getHorizontalScrollbarHeight(); 1914 } 1915 return height; 1916 } 1917 1918 /** 1919 * See {@link WebView#getCertificate()} 1920 */ 1921 @Override 1922 public SslCertificate getCertificate() { 1923 return mCertificate; 1924 } 1925 1926 /** 1927 * See {@link WebView#setCertificate(SslCertificate)} 1928 */ 1929 @Override 1930 public void setCertificate(SslCertificate certificate) { 1931 if (DebugFlags.WEB_VIEW) { 1932 Log.v(LOGTAG, "setCertificate=" + certificate); 1933 } 1934 // here, the certificate can be null (if the site is not secure) 1935 mCertificate = certificate; 1936 } 1937 1938 //------------------------------------------------------------------------- 1939 // Methods called by activity 1940 //------------------------------------------------------------------------- 1941 1942 /** 1943 * See {@link WebView#savePassword(String, String, String)} 1944 */ 1945 @Override 1946 public void savePassword(String host, String username, String password) { 1947 mDatabase.setUsernamePassword(host, username, password); 1948 } 1949 1950 /** 1951 * See {@link WebView#setHttpAuthUsernamePassword(String, String, String, String)} 1952 */ 1953 @Override 1954 public void setHttpAuthUsernamePassword(String host, String realm, 1955 String username, String password) { 1956 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1957 } 1958 1959 /** 1960 * See {@link WebView#getHttpAuthUsernamePassword(String, String)} 1961 */ 1962 @Override 1963 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1964 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1965 } 1966 1967 /** 1968 * Remove Find or Select ActionModes, if active. 1969 */ 1970 private void clearActionModes() { 1971 if (mSelectCallback != null) { 1972 mSelectCallback.finish(); 1973 } 1974 if (mFindCallback != null) { 1975 mFindCallback.finish(); 1976 } 1977 } 1978 1979 /** 1980 * Called to clear state when moving from one page to another, or changing 1981 * in some other way that makes elements associated with the current page 1982 * (such as ActionModes) no longer relevant. 1983 */ 1984 private void clearHelpers() { 1985 hideSoftKeyboard(); 1986 clearActionModes(); 1987 dismissFullScreenMode(); 1988 cancelSelectDialog(); 1989 } 1990 1991 private void cancelSelectDialog() { 1992 if (mListBoxDialog != null) { 1993 mListBoxDialog.cancel(); 1994 mListBoxDialog = null; 1995 } 1996 } 1997 1998 /** 1999 * See {@link WebView#destroy()} 2000 */ 2001 @Override 2002 public void destroy() { 2003 destroyImpl(); 2004 } 2005 2006 private void destroyImpl() { 2007 mCallbackProxy.blockMessages(); 2008 clearHelpers(); 2009 if (mListBoxDialog != null) { 2010 mListBoxDialog.dismiss(); 2011 mListBoxDialog = null; 2012 } 2013 if (mNativeClass != 0) nativeStopGL(); 2014 if (mWebViewCore != null) { 2015 // Tell WebViewCore to destroy itself 2016 synchronized (this) { 2017 WebViewCore webViewCore = mWebViewCore; 2018 mWebViewCore = null; // prevent using partial webViewCore 2019 webViewCore.destroy(); 2020 } 2021 // Remove any pending messages that might not be serviced yet. 2022 mPrivateHandler.removeCallbacksAndMessages(null); 2023 } 2024 if (mNativeClass != 0) { 2025 nativeDestroy(); 2026 mNativeClass = 0; 2027 } 2028 } 2029 2030 /** 2031 * See {@link WebView#enablePlatformNotifications()} 2032 */ 2033 @Deprecated 2034 public static void enablePlatformNotifications() { 2035 synchronized (WebViewClassic.class) { 2036 sNotificationsEnabled = true; 2037 Context context = JniUtil.getContext(); 2038 if (context != null) 2039 setupProxyListener(context); 2040 } 2041 } 2042 2043 /** 2044 * See {@link WebView#disablePlatformNotifications()} 2045 */ 2046 @Deprecated 2047 public static void disablePlatformNotifications() { 2048 synchronized (WebViewClassic.class) { 2049 sNotificationsEnabled = false; 2050 Context context = JniUtil.getContext(); 2051 if (context != null) 2052 disableProxyListener(context); 2053 } 2054 } 2055 2056 /** 2057 * Sets JavaScript engine flags. 2058 * 2059 * @param flags JS engine flags in a String 2060 * 2061 * This is an implementation detail. 2062 */ 2063 public void setJsFlags(String flags) { 2064 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 2065 } 2066 2067 /** 2068 * See {@link WebView#setNetworkAvailable(boolean)} 2069 */ 2070 @Override 2071 public void setNetworkAvailable(boolean networkUp) { 2072 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 2073 networkUp ? 1 : 0, 0); 2074 } 2075 2076 /** 2077 * Inform WebView about the current network type. 2078 */ 2079 public void setNetworkType(String type, String subtype) { 2080 Map<String, String> map = new HashMap<String, String>(); 2081 map.put("type", type); 2082 map.put("subtype", subtype); 2083 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 2084 } 2085 2086 /** 2087 * See {@link WebView#saveState(Bundle)} 2088 */ 2089 @Override 2090 public WebBackForwardList saveState(Bundle outState) { 2091 if (outState == null) { 2092 return null; 2093 } 2094 // We grab a copy of the back/forward list because a client of WebView 2095 // may have invalidated the history list by calling clearHistory. 2096 WebBackForwardList list = copyBackForwardList(); 2097 final int currentIndex = list.getCurrentIndex(); 2098 final int size = list.getSize(); 2099 // We should fail saving the state if the list is empty or the index is 2100 // not in a valid range. 2101 if (currentIndex < 0 || currentIndex >= size || size == 0) { 2102 return null; 2103 } 2104 outState.putInt("index", currentIndex); 2105 // FIXME: This should just be a byte[][] instead of ArrayList but 2106 // Parcel.java does not have the code to handle multi-dimensional 2107 // arrays. 2108 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 2109 for (int i = 0; i < size; i++) { 2110 WebHistoryItem item = list.getItemAtIndex(i); 2111 if (null == item) { 2112 // FIXME: this shouldn't happen 2113 // need to determine how item got set to null 2114 Log.w(LOGTAG, "saveState: Unexpected null history item."); 2115 return null; 2116 } 2117 byte[] data = item.getFlattenedData(); 2118 if (data == null) { 2119 // It would be very odd to not have any data for a given history 2120 // item. And we will fail to rebuild the history list without 2121 // flattened data. 2122 return null; 2123 } 2124 history.add(data); 2125 } 2126 outState.putSerializable("history", history); 2127 if (mCertificate != null) { 2128 outState.putBundle("certificate", 2129 SslCertificate.saveState(mCertificate)); 2130 } 2131 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 2132 mZoomManager.saveZoomState(outState); 2133 return list; 2134 } 2135 2136 /** 2137 * See {@link WebView#savePicture(Bundle, File)} 2138 */ 2139 @Override 2140 @Deprecated 2141 public boolean savePicture(Bundle b, final File dest) { 2142 if (dest == null || b == null) { 2143 return false; 2144 } 2145 final Picture p = capturePicture(); 2146 // Use a temporary file while writing to ensure the destination file 2147 // contains valid data. 2148 final File temp = new File(dest.getPath() + ".writing"); 2149 new Thread(new Runnable() { 2150 @Override 2151 public void run() { 2152 FileOutputStream out = null; 2153 try { 2154 out = new FileOutputStream(temp); 2155 p.writeToStream(out); 2156 // Writing the picture succeeded, rename the temporary file 2157 // to the destination. 2158 temp.renameTo(dest); 2159 } catch (Exception e) { 2160 // too late to do anything about it. 2161 } finally { 2162 if (out != null) { 2163 try { 2164 out.close(); 2165 } catch (Exception e) { 2166 // Can't do anything about that 2167 } 2168 } 2169 temp.delete(); 2170 } 2171 } 2172 }).start(); 2173 // now update the bundle 2174 b.putInt("scrollX", getScrollX()); 2175 b.putInt("scrollY", getScrollY()); 2176 mZoomManager.saveZoomState(b); 2177 return true; 2178 } 2179 2180 private void restoreHistoryPictureFields(Picture p, Bundle b) { 2181 int sx = b.getInt("scrollX", 0); 2182 int sy = b.getInt("scrollY", 0); 2183 2184 mDrawHistory = true; 2185 mHistoryPicture = p; 2186 2187 setScrollXRaw(sx); 2188 setScrollYRaw(sy); 2189 mZoomManager.restoreZoomState(b); 2190 final float scale = mZoomManager.getScale(); 2191 mHistoryWidth = Math.round(p.getWidth() * scale); 2192 mHistoryHeight = Math.round(p.getHeight() * scale); 2193 2194 invalidate(); 2195 } 2196 2197 /** 2198 * See {@link WebView#restorePicture(Bundle, File)}; 2199 */ 2200 @Override 2201 @Deprecated 2202 public boolean restorePicture(Bundle b, File src) { 2203 if (src == null || b == null) { 2204 return false; 2205 } 2206 if (!src.exists()) { 2207 return false; 2208 } 2209 try { 2210 final FileInputStream in = new FileInputStream(src); 2211 final Bundle copy = new Bundle(b); 2212 new Thread(new Runnable() { 2213 @Override 2214 public void run() { 2215 try { 2216 final Picture p = Picture.createFromStream(in); 2217 if (p != null) { 2218 // Post a runnable on the main thread to update the 2219 // history picture fields. 2220 mPrivateHandler.post(new Runnable() { 2221 @Override 2222 public void run() { 2223 restoreHistoryPictureFields(p, copy); 2224 } 2225 }); 2226 } 2227 } finally { 2228 try { 2229 in.close(); 2230 } catch (Exception e) { 2231 // Nothing we can do now. 2232 } 2233 } 2234 } 2235 }).start(); 2236 } catch (FileNotFoundException e){ 2237 e.printStackTrace(); 2238 } 2239 return true; 2240 } 2241 2242 /** 2243 * Saves the view data to the output stream. The output is highly 2244 * version specific, and may not be able to be loaded by newer versions 2245 * of WebView. 2246 * @param stream The {@link OutputStream} to save to 2247 * @param callback The {@link ValueCallback} to call with the result 2248 */ 2249 public void saveViewState(OutputStream stream, ValueCallback<Boolean> callback) { 2250 if (mWebViewCore == null) { 2251 callback.onReceiveValue(false); 2252 return; 2253 } 2254 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.SAVE_VIEW_STATE, 2255 new WebViewCore.SaveViewStateRequest(stream, callback)); 2256 } 2257 2258 /** 2259 * Loads the view data from the input stream. See 2260 * {@link #saveViewState(java.io.OutputStream, ValueCallback)} for more information. 2261 * @param stream The {@link InputStream} to load from 2262 */ 2263 public void loadViewState(InputStream stream) { 2264 mBlockWebkitViewMessages = true; 2265 new AsyncTask<InputStream, Void, DrawData>() { 2266 2267 @Override 2268 protected DrawData doInBackground(InputStream... params) { 2269 try { 2270 return ViewStateSerializer.deserializeViewState(params[0]); 2271 } catch (IOException e) { 2272 return null; 2273 } 2274 } 2275 2276 @Override 2277 protected void onPostExecute(DrawData draw) { 2278 if (draw == null) { 2279 Log.e(LOGTAG, "Failed to load view state!"); 2280 return; 2281 } 2282 int viewWidth = getViewWidth(); 2283 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2284 draw.mViewSize = new Point(viewWidth, viewHeight); 2285 draw.mViewState.mDefaultScale = getDefaultZoomScale(); 2286 mLoadedPicture = draw; 2287 setNewPicture(mLoadedPicture, true); 2288 mLoadedPicture.mViewState = null; 2289 } 2290 2291 }.execute(stream); 2292 } 2293 2294 /** 2295 * Clears the view state set with {@link #loadViewState(InputStream)}. 2296 * This WebView will then switch to showing the content from webkit 2297 */ 2298 public void clearViewState() { 2299 mBlockWebkitViewMessages = false; 2300 mLoadedPicture = null; 2301 invalidate(); 2302 } 2303 2304 /** 2305 * See {@link WebView#restoreState(Bundle)} 2306 */ 2307 @Override 2308 public WebBackForwardList restoreState(Bundle inState) { 2309 WebBackForwardList returnList = null; 2310 if (inState == null) { 2311 return returnList; 2312 } 2313 if (inState.containsKey("index") && inState.containsKey("history")) { 2314 mCertificate = SslCertificate.restoreState( 2315 inState.getBundle("certificate")); 2316 2317 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 2318 final int index = inState.getInt("index"); 2319 // We can't use a clone of the list because we need to modify the 2320 // shared copy, so synchronize instead to prevent concurrent 2321 // modifications. 2322 synchronized (list) { 2323 final List<byte[]> history = 2324 (List<byte[]>) inState.getSerializable("history"); 2325 final int size = history.size(); 2326 // Check the index bounds so we don't crash in native code while 2327 // restoring the history index. 2328 if (index < 0 || index >= size) { 2329 return null; 2330 } 2331 for (int i = 0; i < size; i++) { 2332 byte[] data = history.remove(0); 2333 if (data == null) { 2334 // If we somehow have null data, we cannot reconstruct 2335 // the item and thus our history list cannot be rebuilt. 2336 return null; 2337 } 2338 WebHistoryItem item = new WebHistoryItem(data); 2339 list.addHistoryItem(item); 2340 } 2341 // Grab the most recent copy to return to the caller. 2342 returnList = copyBackForwardList(); 2343 // Update the copy to have the correct index. 2344 returnList.setCurrentIndex(index); 2345 } 2346 // Restore private browsing setting. 2347 if (inState.getBoolean("privateBrowsingEnabled")) { 2348 getSettings().setPrivateBrowsingEnabled(true); 2349 } 2350 mZoomManager.restoreZoomState(inState); 2351 // Remove all pending messages because we are restoring previous 2352 // state. 2353 mWebViewCore.removeMessages(); 2354 // Send a restore state message. 2355 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 2356 } 2357 return returnList; 2358 } 2359 2360 /** 2361 * See {@link WebView#loadUrl(String, Map)} 2362 */ 2363 @Override 2364 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 2365 loadUrlImpl(url, additionalHttpHeaders); 2366 } 2367 2368 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 2369 switchOutDrawHistory(); 2370 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 2371 arg.mUrl = url; 2372 arg.mExtraHeaders = extraHeaders; 2373 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 2374 clearHelpers(); 2375 } 2376 2377 /** 2378 * See {@link WebView#loadUrl(String)} 2379 */ 2380 @Override 2381 public void loadUrl(String url) { 2382 loadUrlImpl(url); 2383 } 2384 2385 private void loadUrlImpl(String url) { 2386 if (url == null) { 2387 return; 2388 } 2389 loadUrlImpl(url, null); 2390 } 2391 2392 /** 2393 * See {@link WebView#postUrl(String, byte[])} 2394 */ 2395 @Override 2396 public void postUrl(String url, byte[] postData) { 2397 if (URLUtil.isNetworkUrl(url)) { 2398 switchOutDrawHistory(); 2399 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2400 arg.mUrl = url; 2401 arg.mPostData = postData; 2402 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2403 clearHelpers(); 2404 } else { 2405 loadUrlImpl(url); 2406 } 2407 } 2408 2409 /** 2410 * See {@link WebView#loadData(String, String, String)} 2411 */ 2412 @Override 2413 public void loadData(String data, String mimeType, String encoding) { 2414 loadDataImpl(data, mimeType, encoding); 2415 } 2416 2417 private void loadDataImpl(String data, String mimeType, String encoding) { 2418 StringBuilder dataUrl = new StringBuilder("data:"); 2419 dataUrl.append(mimeType); 2420 if ("base64".equals(encoding)) { 2421 dataUrl.append(";base64"); 2422 } 2423 dataUrl.append(","); 2424 dataUrl.append(data); 2425 loadUrlImpl(dataUrl.toString()); 2426 } 2427 2428 /** 2429 * See {@link WebView#loadDataWithBaseURL(String, String, String, String, String)} 2430 */ 2431 @Override 2432 public void loadDataWithBaseURL(String baseUrl, String data, 2433 String mimeType, String encoding, String historyUrl) { 2434 2435 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2436 loadDataImpl(data, mimeType, encoding); 2437 return; 2438 } 2439 switchOutDrawHistory(); 2440 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2441 arg.mBaseUrl = baseUrl; 2442 arg.mData = data; 2443 arg.mMimeType = mimeType; 2444 arg.mEncoding = encoding; 2445 arg.mHistoryUrl = historyUrl; 2446 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2447 clearHelpers(); 2448 } 2449 2450 /** 2451 * See {@link WebView#saveWebArchive(String)} 2452 */ 2453 @Override 2454 public void saveWebArchive(String filename) { 2455 saveWebArchiveImpl(filename, false, null); 2456 } 2457 2458 /* package */ static class SaveWebArchiveMessage { 2459 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2460 mBasename = basename; 2461 mAutoname = autoname; 2462 mCallback = callback; 2463 } 2464 2465 /* package */ final String mBasename; 2466 /* package */ final boolean mAutoname; 2467 /* package */ final ValueCallback<String> mCallback; 2468 /* package */ String mResultFile; 2469 } 2470 2471 /** 2472 * See {@link WebView#saveWebArchive(String, boolean, ValueCallback)} 2473 */ 2474 @Override 2475 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2476 saveWebArchiveImpl(basename, autoname, callback); 2477 } 2478 2479 private void saveWebArchiveImpl(String basename, boolean autoname, 2480 ValueCallback<String> callback) { 2481 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2482 new SaveWebArchiveMessage(basename, autoname, callback)); 2483 } 2484 2485 /** 2486 * See {@link WebView#stopLoading()} 2487 */ 2488 @Override 2489 public void stopLoading() { 2490 // TODO: should we clear all the messages in the queue before sending 2491 // STOP_LOADING? 2492 switchOutDrawHistory(); 2493 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2494 } 2495 2496 /** 2497 * See {@link WebView#reload()} 2498 */ 2499 @Override 2500 public void reload() { 2501 clearHelpers(); 2502 switchOutDrawHistory(); 2503 mWebViewCore.sendMessage(EventHub.RELOAD); 2504 } 2505 2506 /** 2507 * See {@link WebView#canGoBack()} 2508 */ 2509 @Override 2510 public boolean canGoBack() { 2511 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2512 synchronized (l) { 2513 if (l.getClearPending()) { 2514 return false; 2515 } else { 2516 return l.getCurrentIndex() > 0; 2517 } 2518 } 2519 } 2520 2521 /** 2522 * See {@link WebView#goBack()} 2523 */ 2524 @Override 2525 public void goBack() { 2526 goBackOrForwardImpl(-1); 2527 } 2528 2529 /** 2530 * See {@link WebView#canGoForward()} 2531 */ 2532 @Override 2533 public boolean canGoForward() { 2534 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2535 synchronized (l) { 2536 if (l.getClearPending()) { 2537 return false; 2538 } else { 2539 return l.getCurrentIndex() < l.getSize() - 1; 2540 } 2541 } 2542 } 2543 2544 /** 2545 * See {@link WebView#goForward()} 2546 */ 2547 @Override 2548 public void goForward() { 2549 goBackOrForwardImpl(1); 2550 } 2551 2552 /** 2553 * See {@link WebView#canGoBackOrForward(int)} 2554 */ 2555 @Override 2556 public boolean canGoBackOrForward(int steps) { 2557 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2558 synchronized (l) { 2559 if (l.getClearPending()) { 2560 return false; 2561 } else { 2562 int newIndex = l.getCurrentIndex() + steps; 2563 return newIndex >= 0 && newIndex < l.getSize(); 2564 } 2565 } 2566 } 2567 2568 /** 2569 * See {@link WebView#goBackOrForward(int)} 2570 */ 2571 @Override 2572 public void goBackOrForward(int steps) { 2573 goBackOrForwardImpl(steps); 2574 } 2575 2576 private void goBackOrForwardImpl(int steps) { 2577 goBackOrForward(steps, false); 2578 } 2579 2580 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2581 if (steps != 0) { 2582 clearHelpers(); 2583 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2584 ignoreSnapshot ? 1 : 0); 2585 } 2586 } 2587 2588 /** 2589 * See {@link WebView#isPrivateBrowsingEnabled()} 2590 */ 2591 @Override 2592 public boolean isPrivateBrowsingEnabled() { 2593 WebSettingsClassic settings = getSettings(); 2594 return (settings != null) ? settings.isPrivateBrowsingEnabled() : false; 2595 } 2596 2597 private void startPrivateBrowsing() { 2598 getSettings().setPrivateBrowsingEnabled(true); 2599 } 2600 2601 private boolean extendScroll(int y) { 2602 int finalY = mScroller.getFinalY(); 2603 int newY = pinLocY(finalY + y); 2604 if (newY == finalY) return false; 2605 mScroller.setFinalY(newY); 2606 mScroller.extendDuration(computeDuration(0, y)); 2607 return true; 2608 } 2609 2610 /** 2611 * See {@link WebView#pageUp(boolean)} 2612 */ 2613 @Override 2614 public boolean pageUp(boolean top) { 2615 if (mNativeClass == 0) { 2616 return false; 2617 } 2618 if (top) { 2619 // go to the top of the document 2620 return pinScrollTo(getScrollX(), 0, true, 0); 2621 } 2622 // Page up 2623 int h = getHeight(); 2624 int y; 2625 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2626 y = -h + PAGE_SCROLL_OVERLAP; 2627 } else { 2628 y = -h / 2; 2629 } 2630 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2631 : extendScroll(y); 2632 } 2633 2634 /** 2635 * See {@link WebView#pageDown(boolean)} 2636 */ 2637 @Override 2638 public boolean pageDown(boolean bottom) { 2639 if (mNativeClass == 0) { 2640 return false; 2641 } 2642 if (bottom) { 2643 return pinScrollTo(getScrollX(), computeRealVerticalScrollRange(), true, 0); 2644 } 2645 // Page down. 2646 int h = getHeight(); 2647 int y; 2648 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2649 y = h - PAGE_SCROLL_OVERLAP; 2650 } else { 2651 y = h / 2; 2652 } 2653 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2654 : extendScroll(y); 2655 } 2656 2657 /** 2658 * See {@link WebView#clearView()} 2659 */ 2660 @Override 2661 public void clearView() { 2662 mContentWidth = 0; 2663 mContentHeight = 0; 2664 setBaseLayer(0, false, false); 2665 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2666 } 2667 2668 /** 2669 * See {@link WebView#capturePicture()} 2670 */ 2671 @Override 2672 public Picture capturePicture() { 2673 if (mNativeClass == 0) return null; 2674 Picture result = new Picture(); 2675 nativeCopyBaseContentToPicture(result); 2676 return result; 2677 } 2678 2679 /** 2680 * See {@link WebView#getScale()} 2681 */ 2682 @Override 2683 public float getScale() { 2684 return mZoomManager.getScale(); 2685 } 2686 2687 /** 2688 * Compute the reading level scale of the WebView 2689 * @param scale The current scale. 2690 * @return The reading level scale. 2691 */ 2692 /*package*/ float computeReadingLevelScale(float scale) { 2693 return mZoomManager.computeReadingLevelScale(scale); 2694 } 2695 2696 /** 2697 * See {@link WebView#setInitialScale(int)} 2698 */ 2699 @Override 2700 public void setInitialScale(int scaleInPercent) { 2701 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2702 } 2703 2704 /** 2705 * See {@link WebView#invokeZoomPicker()} 2706 */ 2707 @Override 2708 public void invokeZoomPicker() { 2709 if (!getSettings().supportZoom()) { 2710 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2711 return; 2712 } 2713 clearHelpers(); 2714 mZoomManager.invokeZoomPicker(); 2715 } 2716 2717 /** 2718 * See {@link WebView#getHitTestResult()} 2719 */ 2720 @Override 2721 public HitTestResult getHitTestResult() { 2722 return mInitialHitTestResult; 2723 } 2724 2725 // No left edge for double-tap zoom alignment 2726 static final int NO_LEFTEDGE = -1; 2727 2728 int getBlockLeftEdge(int x, int y, float readingScale) { 2729 float invReadingScale = 1.0f / readingScale; 2730 int readingWidth = (int) (getViewWidth() * invReadingScale); 2731 int left = NO_LEFTEDGE; 2732 if (mFocusedNode != null) { 2733 final int length = mFocusedNode.mEnclosingParentRects.length; 2734 for (int i = 0; i < length; i++) { 2735 Rect rect = mFocusedNode.mEnclosingParentRects[i]; 2736 if (rect.width() < mFocusedNode.mHitTestSlop) { 2737 // ignore bounding boxes that are too small 2738 continue; 2739 } else if (rect.width() > readingWidth) { 2740 // stop when bounding box doesn't fit the screen width 2741 // at reading scale 2742 break; 2743 } 2744 2745 left = rect.left; 2746 } 2747 } 2748 2749 return left; 2750 } 2751 2752 /** 2753 * See {@link WebView#requestFocusNodeHref(Message)} 2754 */ 2755 @Override 2756 public void requestFocusNodeHref(Message hrefMsg) { 2757 if (hrefMsg == null) { 2758 return; 2759 } 2760 int contentX = viewToContentX(mLastTouchX + getScrollX()); 2761 int contentY = viewToContentY(mLastTouchY + getScrollY()); 2762 if (mFocusedNode != null && mFocusedNode.mHitTestX == contentX 2763 && mFocusedNode.mHitTestY == contentY) { 2764 hrefMsg.getData().putString(FocusNodeHref.URL, mFocusedNode.mLinkUrl); 2765 hrefMsg.getData().putString(FocusNodeHref.TITLE, mFocusedNode.mAnchorText); 2766 hrefMsg.getData().putString(FocusNodeHref.SRC, mFocusedNode.mImageUrl); 2767 hrefMsg.sendToTarget(); 2768 return; 2769 } 2770 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2771 contentX, contentY, hrefMsg); 2772 } 2773 2774 /** 2775 * See {@link WebView#requestImageRef(Message)} 2776 */ 2777 @Override 2778 public void requestImageRef(Message msg) { 2779 if (0 == mNativeClass) return; // client isn't initialized 2780 String url = mFocusedNode != null ? mFocusedNode.mImageUrl : null; 2781 Bundle data = msg.getData(); 2782 data.putString("url", url); 2783 msg.setData(data); 2784 msg.sendToTarget(); 2785 } 2786 2787 static int pinLoc(int x, int viewMax, int docMax) { 2788// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2789 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2790 // pin the short document to the top/left of the screen 2791 x = 0; 2792// Log.d(LOGTAG, "--- center " + x); 2793 } else if (x < 0) { 2794 x = 0; 2795// Log.d(LOGTAG, "--- zero"); 2796 } else if (x + viewMax > docMax) { 2797 x = docMax - viewMax; 2798// Log.d(LOGTAG, "--- pin " + x); 2799 } 2800 return x; 2801 } 2802 2803 // Expects x in view coordinates 2804 int pinLocX(int x) { 2805 if (mInOverScrollMode) return x; 2806 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2807 } 2808 2809 // Expects y in view coordinates 2810 int pinLocY(int y) { 2811 if (mInOverScrollMode) return y; 2812 return pinLoc(y, getViewHeightWithTitle(), 2813 computeRealVerticalScrollRange() + getTitleHeight()); 2814 } 2815 2816 /** 2817 * Given a distance in view space, convert it to content space. Note: this 2818 * does not reflect translation, just scaling, so this should not be called 2819 * with coordinates, but should be called for dimensions like width or 2820 * height. 2821 */ 2822 private int viewToContentDimension(int d) { 2823 return Math.round(d * mZoomManager.getInvScale()); 2824 } 2825 2826 /** 2827 * Given an x coordinate in view space, convert it to content space. Also 2828 * may be used for absolute heights. 2829 */ 2830 /*package*/ int viewToContentX(int x) { 2831 return viewToContentDimension(x); 2832 } 2833 2834 /** 2835 * Given a y coordinate in view space, convert it to content space. 2836 * Takes into account the height of the title bar if there is one 2837 * embedded into the WebView. 2838 */ 2839 /*package*/ int viewToContentY(int y) { 2840 return viewToContentDimension(y - getTitleHeight()); 2841 } 2842 2843 /** 2844 * Given a x coordinate in view space, convert it to content space. 2845 * Returns the result as a float. 2846 */ 2847 private float viewToContentXf(int x) { 2848 return x * mZoomManager.getInvScale(); 2849 } 2850 2851 /** 2852 * Given a y coordinate in view space, convert it to content space. 2853 * Takes into account the height of the title bar if there is one 2854 * embedded into the WebView. Returns the result as a float. 2855 */ 2856 private float viewToContentYf(int y) { 2857 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2858 } 2859 2860 /** 2861 * Given a distance in content space, convert it to view space. Note: this 2862 * does not reflect translation, just scaling, so this should not be called 2863 * with coordinates, but should be called for dimensions like width or 2864 * height. 2865 */ 2866 /*package*/ int contentToViewDimension(int d) { 2867 return Math.round(d * mZoomManager.getScale()); 2868 } 2869 2870 /** 2871 * Given an x coordinate in content space, convert it to view 2872 * space. 2873 */ 2874 /*package*/ int contentToViewX(int x) { 2875 return contentToViewDimension(x); 2876 } 2877 2878 /** 2879 * Given a y coordinate in content space, convert it to view 2880 * space. Takes into account the height of the title bar. 2881 */ 2882 /*package*/ int contentToViewY(int y) { 2883 return contentToViewDimension(y) + getTitleHeight(); 2884 } 2885 2886 private Rect contentToViewRect(Rect x) { 2887 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2888 contentToViewX(x.right), contentToViewY(x.bottom)); 2889 } 2890 2891 /* To invalidate a rectangle in content coordinates, we need to transform 2892 the rect into view coordinates, so we can then call invalidate(...). 2893 2894 Normally, we would just call contentToView[XY](...), which eventually 2895 calls Math.round(coordinate * mActualScale). However, for invalidates, 2896 we need to account for the slop that occurs with antialiasing. To 2897 address that, we are a little more liberal in the size of the rect that 2898 we invalidate. 2899 2900 This liberal calculation calls floor() for the top/left, and ceil() for 2901 the bottom/right coordinates. This catches the possible extra pixels of 2902 antialiasing that we might have missed with just round(). 2903 */ 2904 2905 // Called by JNI to invalidate the View, given rectangle coordinates in 2906 // content space 2907 private void viewInvalidate(int l, int t, int r, int b) { 2908 final float scale = mZoomManager.getScale(); 2909 final int dy = getTitleHeight(); 2910 mWebView.invalidate((int)Math.floor(l * scale), 2911 (int)Math.floor(t * scale) + dy, 2912 (int)Math.ceil(r * scale), 2913 (int)Math.ceil(b * scale) + dy); 2914 } 2915 2916 // Called by JNI to invalidate the View after a delay, given rectangle 2917 // coordinates in content space 2918 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2919 final float scale = mZoomManager.getScale(); 2920 final int dy = getTitleHeight(); 2921 mWebView.postInvalidateDelayed(delay, 2922 (int)Math.floor(l * scale), 2923 (int)Math.floor(t * scale) + dy, 2924 (int)Math.ceil(r * scale), 2925 (int)Math.ceil(b * scale) + dy); 2926 } 2927 2928 private void invalidateContentRect(Rect r) { 2929 viewInvalidate(r.left, r.top, r.right, r.bottom); 2930 } 2931 2932 // stop the scroll animation, and don't let a subsequent fling add 2933 // to the existing velocity 2934 private void abortAnimation() { 2935 mScroller.abortAnimation(); 2936 mLastVelocity = 0; 2937 } 2938 2939 /* call from webcoreview.draw(), so we're still executing in the UI thread 2940 */ 2941 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2942 2943 // premature data from webkit, ignore 2944 if ((w | h) == 0) { 2945 return; 2946 } 2947 2948 // don't abort a scroll animation if we didn't change anything 2949 if (mContentWidth != w || mContentHeight != h) { 2950 // record new dimensions 2951 mContentWidth = w; 2952 mContentHeight = h; 2953 // If history Picture is drawn, don't update scroll. They will be 2954 // updated when we get out of that mode. 2955 if (!mDrawHistory) { 2956 // repin our scroll, taking into account the new content size 2957 if (updateScrollCoordinates(pinLocX(getScrollX()), 2958 pinLocY(getScrollY()))) { 2959 invalidate(); 2960 } 2961 if (!mScroller.isFinished()) { 2962 // We are in the middle of a scroll. Repin the final scroll 2963 // position. 2964 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2965 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2966 } 2967 } 2968 } 2969 contentSizeChanged(updateLayout); 2970 } 2971 2972 // Used to avoid sending many visible rect messages. 2973 private Rect mLastVisibleRectSent = new Rect(); 2974 private Rect mLastGlobalRect = new Rect(); 2975 private Rect mVisibleRect = new Rect(); 2976 private Rect mGlobalVisibleRect = new Rect(); 2977 private Point mScrollOffset = new Point(); 2978 2979 Rect sendOurVisibleRect() { 2980 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2981 calcOurContentVisibleRect(mVisibleRect); 2982 // Rect.equals() checks for null input. 2983 if (!mVisibleRect.equals(mLastVisibleRectSent)) { 2984 if (!mBlockWebkitViewMessages) { 2985 mScrollOffset.set(mVisibleRect.left, mVisibleRect.top); 2986 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2987 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2988 mSendScrollEvent ? 1 : 0, mScrollOffset); 2989 } 2990 mLastVisibleRectSent.set(mVisibleRect); 2991 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2992 } 2993 if (mWebView.getGlobalVisibleRect(mGlobalVisibleRect) 2994 && !mGlobalVisibleRect.equals(mLastGlobalRect)) { 2995 if (DebugFlags.WEB_VIEW) { 2996 Log.v(LOGTAG, "sendOurVisibleRect=(" + mGlobalVisibleRect.left + "," 2997 + mGlobalVisibleRect.top + ",r=" + mGlobalVisibleRect.right + ",b=" 2998 + mGlobalVisibleRect.bottom); 2999 } 3000 // TODO: the global offset is only used by windowRect() 3001 // in ChromeClientAndroid ; other clients such as touch 3002 // and mouse events could return view + screen relative points. 3003 if (!mBlockWebkitViewMessages) { 3004 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, mGlobalVisibleRect); 3005 } 3006 mLastGlobalRect.set(mGlobalVisibleRect); 3007 } 3008 return mVisibleRect; 3009 } 3010 3011 private Point mGlobalVisibleOffset = new Point(); 3012 // Sets r to be the visible rectangle of our webview in view coordinates 3013 private void calcOurVisibleRect(Rect r) { 3014 mWebView.getGlobalVisibleRect(r, mGlobalVisibleOffset); 3015 r.offset(-mGlobalVisibleOffset.x, -mGlobalVisibleOffset.y); 3016 } 3017 3018 // Sets r to be our visible rectangle in content coordinates 3019 private void calcOurContentVisibleRect(Rect r) { 3020 calcOurVisibleRect(r); 3021 r.left = viewToContentX(r.left); 3022 // viewToContentY will remove the total height of the title bar. Add 3023 // the visible height back in to account for the fact that if the title 3024 // bar is partially visible, the part of the visible rect which is 3025 // displaying our content is displaced by that amount. 3026 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 3027 r.right = viewToContentX(r.right); 3028 r.bottom = viewToContentY(r.bottom); 3029 } 3030 3031 private final Rect mTempContentVisibleRect = new Rect(); 3032 // Sets r to be our visible rectangle in content coordinates. We use this 3033 // method on the native side to compute the position of the fixed layers. 3034 // Uses floating coordinates (necessary to correctly place elements when 3035 // the scale factor is not 1) 3036 private void calcOurContentVisibleRectF(RectF r) { 3037 calcOurVisibleRect(mTempContentVisibleRect); 3038 viewToContentVisibleRect(r, mTempContentVisibleRect); 3039 } 3040 3041 static class ViewSizeData { 3042 int mWidth; 3043 int mHeight; 3044 float mHeightWidthRatio; 3045 int mActualViewHeight; 3046 int mTextWrapWidth; 3047 int mAnchorX; 3048 int mAnchorY; 3049 float mScale; 3050 boolean mIgnoreHeight; 3051 } 3052 3053 /** 3054 * Compute unzoomed width and height, and if they differ from the last 3055 * values we sent, send them to webkit (to be used as new viewport) 3056 * 3057 * @param force ensures that the message is sent to webkit even if the width 3058 * or height has not changed since the last message 3059 * 3060 * @return true if new values were sent 3061 */ 3062 boolean sendViewSizeZoom(boolean force) { 3063 if (mBlockWebkitViewMessages) return false; 3064 if (mZoomManager.isPreventingWebkitUpdates()) return false; 3065 3066 int viewWidth = getViewWidth(); 3067 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 3068 // This height could be fixed and be different from actual visible height. 3069 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 3070 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 3071 // Make the ratio more accurate than (newHeight / newWidth), since the 3072 // latter both are calculated and rounded. 3073 float heightWidthRatio = (float) viewHeight / viewWidth; 3074 /* 3075 * Because the native side may have already done a layout before the 3076 * View system was able to measure us, we have to send a height of 0 to 3077 * remove excess whitespace when we grow our width. This will trigger a 3078 * layout and a change in content size. This content size change will 3079 * mean that contentSizeChanged will either call this method directly or 3080 * indirectly from onSizeChanged. 3081 */ 3082 if (newWidth > mLastWidthSent && mWrapContent) { 3083 newHeight = 0; 3084 heightWidthRatio = 0; 3085 } 3086 // Actual visible content height. 3087 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 3088 // Avoid sending another message if the dimensions have not changed. 3089 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 3090 actualViewHeight != mLastActualHeightSent) { 3091 ViewSizeData data = new ViewSizeData(); 3092 data.mWidth = newWidth; 3093 data.mHeight = newHeight; 3094 data.mHeightWidthRatio = heightWidthRatio; 3095 data.mActualViewHeight = actualViewHeight; 3096 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 3097 data.mScale = mZoomManager.getScale(); 3098 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 3099 && !mHeightCanMeasure; 3100 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 3101 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 3102 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 3103 mLastWidthSent = newWidth; 3104 mLastHeightSent = newHeight; 3105 mLastActualHeightSent = actualViewHeight; 3106 mZoomManager.clearDocumentAnchor(); 3107 return true; 3108 } 3109 return false; 3110 } 3111 3112 /** 3113 * Update the double-tap zoom. 3114 */ 3115 /* package */ void updateDoubleTapZoom(int doubleTapZoom) { 3116 mZoomManager.updateDoubleTapZoom(doubleTapZoom); 3117 } 3118 3119 private int computeRealHorizontalScrollRange() { 3120 if (mDrawHistory) { 3121 return mHistoryWidth; 3122 } else { 3123 // to avoid rounding error caused unnecessary scrollbar, use floor 3124 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 3125 } 3126 } 3127 3128 @Override 3129 public int computeHorizontalScrollRange() { 3130 int range = computeRealHorizontalScrollRange(); 3131 3132 // Adjust reported range if overscrolled to compress the scroll bars 3133 final int scrollX = getScrollX(); 3134 final int overscrollRight = computeMaxScrollX(); 3135 if (scrollX < 0) { 3136 range -= scrollX; 3137 } else if (scrollX > overscrollRight) { 3138 range += scrollX - overscrollRight; 3139 } 3140 3141 return range; 3142 } 3143 3144 @Override 3145 public int computeHorizontalScrollOffset() { 3146 return Math.max(getScrollX(), 0); 3147 } 3148 3149 private int computeRealVerticalScrollRange() { 3150 if (mDrawHistory) { 3151 return mHistoryHeight; 3152 } else { 3153 // to avoid rounding error caused unnecessary scrollbar, use floor 3154 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 3155 } 3156 } 3157 3158 @Override 3159 public int computeVerticalScrollRange() { 3160 int range = computeRealVerticalScrollRange(); 3161 3162 // Adjust reported range if overscrolled to compress the scroll bars 3163 final int scrollY = getScrollY(); 3164 final int overscrollBottom = computeMaxScrollY(); 3165 if (scrollY < 0) { 3166 range -= scrollY; 3167 } else if (scrollY > overscrollBottom) { 3168 range += scrollY - overscrollBottom; 3169 } 3170 3171 return range; 3172 } 3173 3174 @Override 3175 public int computeVerticalScrollOffset() { 3176 return Math.max(getScrollY() - getTitleHeight(), 0); 3177 } 3178 3179 @Override 3180 public int computeVerticalScrollExtent() { 3181 return getViewHeight(); 3182 } 3183 3184 @Override 3185 public void onDrawVerticalScrollBar(Canvas canvas, 3186 Drawable scrollBar, 3187 int l, int t, int r, int b) { 3188 if (getScrollY() < 0) { 3189 t -= getScrollY(); 3190 } 3191 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3192 scrollBar.draw(canvas); 3193 } 3194 3195 @Override 3196 public void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3197 boolean clampedY) { 3198 // Special-case layer scrolling so that we do not trigger normal scroll 3199 // updating. 3200 if (mTouchMode == TOUCH_DRAG_TEXT_MODE) { 3201 scrollEditText(scrollX, scrollY); 3202 return; 3203 } 3204 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3205 scrollLayerTo(scrollX, scrollY); 3206 return; 3207 } 3208 mInOverScrollMode = false; 3209 int maxX = computeMaxScrollX(); 3210 int maxY = computeMaxScrollY(); 3211 if (maxX == 0) { 3212 // do not over scroll x if the page just fits the screen 3213 scrollX = pinLocX(scrollX); 3214 } else if (scrollX < 0 || scrollX > maxX) { 3215 mInOverScrollMode = true; 3216 } 3217 if (scrollY < 0 || scrollY > maxY) { 3218 mInOverScrollMode = true; 3219 } 3220 3221 int oldX = getScrollX(); 3222 int oldY = getScrollY(); 3223 3224 mWebViewPrivate.super_scrollTo(scrollX, scrollY); 3225 3226 if (mOverScrollGlow != null) { 3227 mOverScrollGlow.pullGlow(getScrollX(), getScrollY(), oldX, oldY, maxX, maxY); 3228 } 3229 } 3230 3231 /** 3232 * See {@link WebView#getUrl()} 3233 */ 3234 @Override 3235 public String getUrl() { 3236 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3237 return h != null ? h.getUrl() : null; 3238 } 3239 3240 /** 3241 * See {@link WebView#getOriginalUrl()} 3242 */ 3243 @Override 3244 public String getOriginalUrl() { 3245 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3246 return h != null ? h.getOriginalUrl() : null; 3247 } 3248 3249 /** 3250 * See {@link WebView#getTitle()} 3251 */ 3252 @Override 3253 public String getTitle() { 3254 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3255 return h != null ? h.getTitle() : null; 3256 } 3257 3258 /** 3259 * See {@link WebView#getFavicon()} 3260 */ 3261 @Override 3262 public Bitmap getFavicon() { 3263 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3264 return h != null ? h.getFavicon() : null; 3265 } 3266 3267 /** 3268 * See {@link WebView#getTouchIconUrl()} 3269 */ 3270 @Override 3271 public String getTouchIconUrl() { 3272 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3273 return h != null ? h.getTouchIconUrl() : null; 3274 } 3275 3276 /** 3277 * See {@link WebView#getProgress()} 3278 */ 3279 @Override 3280 public int getProgress() { 3281 return mCallbackProxy.getProgress(); 3282 } 3283 3284 /** 3285 * See {@link WebView#getContentHeight()} 3286 */ 3287 @Override 3288 public int getContentHeight() { 3289 return mContentHeight; 3290 } 3291 3292 /** 3293 * See {@link WebView#getContentWidth()} 3294 */ 3295 @Override 3296 public int getContentWidth() { 3297 return mContentWidth; 3298 } 3299 3300 public int getPageBackgroundColor() { 3301 if (mNativeClass == 0) return Color.WHITE; 3302 return nativeGetBackgroundColor(mNativeClass); 3303 } 3304 3305 /** 3306 * See {@link WebView#pauseTimers()} 3307 */ 3308 @Override 3309 public void pauseTimers() { 3310 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3311 } 3312 3313 /** 3314 * See {@link WebView#resumeTimers()} 3315 */ 3316 @Override 3317 public void resumeTimers() { 3318 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3319 } 3320 3321 /** 3322 * See {@link WebView#onPause()} 3323 */ 3324 @Override 3325 public void onPause() { 3326 if (!mIsPaused) { 3327 mIsPaused = true; 3328 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3329 // We want to pause the current playing video when switching out 3330 // from the current WebView/tab. 3331 if (mHTML5VideoViewProxy != null) { 3332 mHTML5VideoViewProxy.pauseAndDispatch(); 3333 } 3334 if (mNativeClass != 0) { 3335 nativeSetPauseDrawing(mNativeClass, true); 3336 } 3337 3338 cancelSelectDialog(); 3339 WebCoreThreadWatchdog.pause(); 3340 } 3341 } 3342 3343 @Override 3344 public void onWindowVisibilityChanged(int visibility) { 3345 updateDrawingState(); 3346 } 3347 3348 void updateDrawingState() { 3349 if (mNativeClass == 0 || mIsPaused) return; 3350 if (mWebView.getWindowVisibility() != View.VISIBLE) { 3351 nativeSetPauseDrawing(mNativeClass, true); 3352 } else if (mWebView.getVisibility() != View.VISIBLE) { 3353 nativeSetPauseDrawing(mNativeClass, true); 3354 } else { 3355 nativeSetPauseDrawing(mNativeClass, false); 3356 } 3357 } 3358 3359 /** 3360 * See {@link WebView#onResume()} 3361 */ 3362 @Override 3363 public void onResume() { 3364 if (mIsPaused) { 3365 mIsPaused = false; 3366 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3367 if (mNativeClass != 0) { 3368 nativeSetPauseDrawing(mNativeClass, false); 3369 } 3370 } 3371 // Ensure that the watchdog has a currently valid Context to be able to display 3372 // a prompt dialog. For example, if the Activity was finished whilst the WebCore 3373 // thread was blocked and the Activity is started again, we may reuse the blocked 3374 // thread, but we'll have a new Activity. 3375 WebCoreThreadWatchdog.updateContext(mContext); 3376 // We get a call to onResume for new WebViews (i.e. mIsPaused will be false). We need 3377 // to ensure that the Watchdog thread is running for the new WebView, so call 3378 // it outside the if block above. 3379 WebCoreThreadWatchdog.resume(); 3380 } 3381 3382 /** 3383 * See {@link WebView#isPaused()} 3384 */ 3385 @Override 3386 public boolean isPaused() { 3387 return mIsPaused; 3388 } 3389 3390 /** 3391 * See {@link WebView#freeMemory()} 3392 */ 3393 @Override 3394 public void freeMemory() { 3395 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3396 } 3397 3398 /** 3399 * See {@link WebView#clearCache(boolean)} 3400 */ 3401 @Override 3402 public void clearCache(boolean includeDiskFiles) { 3403 // Note: this really needs to be a static method as it clears cache for all 3404 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3405 // we can't make this static. 3406 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3407 includeDiskFiles ? 1 : 0, 0); 3408 } 3409 3410 /** 3411 * See {@link WebView#clearFormData()} 3412 */ 3413 @Override 3414 public void clearFormData() { 3415 if (mAutoCompletePopup != null) { 3416 mAutoCompletePopup.clearAdapter(); 3417 } 3418 } 3419 3420 /** 3421 * See {@link WebView#clearHistory()} 3422 */ 3423 @Override 3424 public void clearHistory() { 3425 mCallbackProxy.getBackForwardList().setClearPending(); 3426 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3427 } 3428 3429 /** 3430 * See {@link WebView#clearSslPreferences()} 3431 */ 3432 @Override 3433 public void clearSslPreferences() { 3434 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3435 } 3436 3437 /** 3438 * See {@link WebView#copyBackForwardList()} 3439 */ 3440 @Override 3441 public WebBackForwardList copyBackForwardList() { 3442 return mCallbackProxy.getBackForwardList().clone(); 3443 } 3444 3445 /** 3446 * See {@link WebView#setFindListener(WebView.FindListener)}. 3447 * @hide 3448 */ 3449 public void setFindListener(WebView.FindListener listener) { 3450 mFindListener = listener; 3451 } 3452 3453 /** 3454 * See {@link WebView#findNext(boolean)} 3455 */ 3456 @Override 3457 public void findNext(boolean forward) { 3458 if (0 == mNativeClass) return; // client isn't initialized 3459 if (mFindRequest != null) { 3460 mWebViewCore.sendMessage(EventHub.FIND_NEXT, forward ? 1 : 0, mFindRequest); 3461 } 3462 } 3463 3464 /** 3465 * See {@link WebView#findAll(String)} 3466 */ 3467 @Override 3468 public int findAll(String find) { 3469 return findAllBody(find, false); 3470 } 3471 3472 public void findAllAsync(String find) { 3473 findAllBody(find, true); 3474 } 3475 3476 private int findAllBody(String find, boolean isAsync) { 3477 if (0 == mNativeClass) return 0; // client isn't initialized 3478 mFindRequest = null; 3479 if (find == null) return 0; 3480 mWebViewCore.removeMessages(EventHub.FIND_ALL); 3481 mFindRequest = new WebViewCore.FindAllRequest(find); 3482 if (isAsync) { 3483 mWebViewCore.sendMessage(EventHub.FIND_ALL, mFindRequest); 3484 return 0; // no need to wait for response 3485 } 3486 synchronized(mFindRequest) { 3487 try { 3488 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.FIND_ALL, mFindRequest); 3489 while (mFindRequest.mMatchCount == -1) { 3490 mFindRequest.wait(); 3491 } 3492 } 3493 catch (InterruptedException e) { 3494 return 0; 3495 } 3496 return mFindRequest.mMatchCount; 3497 } 3498 } 3499 3500 /** 3501 * Start an ActionMode for finding text in this WebView. Only works if this 3502 * WebView is attached to the view system. 3503 * @param text If non-null, will be the initial text to search for. 3504 * Otherwise, the last String searched for in this WebView will 3505 * be used to start. 3506 * @param showIme If true, show the IME, assuming the user will begin typing. 3507 * If false and text is non-null, perform a find all. 3508 * @return boolean True if the find dialog is shown, false otherwise. 3509 */ 3510 public boolean showFindDialog(String text, boolean showIme) { 3511 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3512 if (mWebView.getParent() == null || mWebView.startActionMode(callback) == null) { 3513 // Could not start the action mode, so end Find on page 3514 return false; 3515 } 3516 mCachedOverlappingActionModeHeight = -1; 3517 mFindCallback = callback; 3518 setFindIsUp(true); 3519 mFindCallback.setWebView(this); 3520 if (showIme) { 3521 mFindCallback.showSoftInput(); 3522 } else if (text != null) { 3523 mFindCallback.setText(text); 3524 mFindCallback.findAll(); 3525 return true; 3526 } 3527 if (text == null) { 3528 text = mFindRequest == null ? null : mFindRequest.mSearchText; 3529 } 3530 if (text != null) { 3531 mFindCallback.setText(text); 3532 mFindCallback.findAll(); 3533 } 3534 return true; 3535 } 3536 3537 /** 3538 * Keep track of the find callback so that we can remove its titlebar if 3539 * necessary. 3540 */ 3541 private FindActionModeCallback mFindCallback; 3542 3543 /** 3544 * Toggle whether the find dialog is showing, for both native and Java. 3545 */ 3546 private void setFindIsUp(boolean isUp) { 3547 mFindIsUp = isUp; 3548 } 3549 3550 // Used to know whether the find dialog is open. Affects whether 3551 // or not we draw the highlights for matches. 3552 private boolean mFindIsUp; 3553 3554 // Keep track of the last find request sent. 3555 private WebViewCore.FindAllRequest mFindRequest = null; 3556 3557 /** 3558 * Return the first substring consisting of the address of a physical 3559 * location. Currently, only addresses in the United States are detected, 3560 * and consist of: 3561 * - a house number 3562 * - a street name 3563 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3564 * - a city name 3565 * - a state or territory, either spelled out or two-letter abbr. 3566 * - an optional 5 digit or 9 digit zip code. 3567 * 3568 * All names must be correctly capitalized, and the zip code, if present, 3569 * must be valid for the state. The street type must be a standard USPS 3570 * spelling or abbreviation. The state or territory must also be spelled 3571 * or abbreviated using USPS standards. The house number may not exceed 3572 * five digits. 3573 * @param addr The string to search for addresses. 3574 * 3575 * @return the address, or if no address is found, return null. 3576 */ 3577 public static String findAddress(String addr) { 3578 return findAddress(addr, false); 3579 } 3580 3581 /** 3582 * Return the first substring consisting of the address of a physical 3583 * location. Currently, only addresses in the United States are detected, 3584 * and consist of: 3585 * - a house number 3586 * - a street name 3587 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3588 * - a city name 3589 * - a state or territory, either spelled out or two-letter abbr. 3590 * - an optional 5 digit or 9 digit zip code. 3591 * 3592 * Names are optionally capitalized, and the zip code, if present, 3593 * must be valid for the state. The street type must be a standard USPS 3594 * spelling or abbreviation. The state or territory must also be spelled 3595 * or abbreviated using USPS standards. The house number may not exceed 3596 * five digits. 3597 * @param addr The string to search for addresses. 3598 * @param caseInsensitive addr Set to true to make search ignore case. 3599 * 3600 * @return the address, or if no address is found, return null. 3601 */ 3602 public static String findAddress(String addr, boolean caseInsensitive) { 3603 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3604 } 3605 3606 /** 3607 * See {@link WebView#clearMatches()} 3608 */ 3609 @Override 3610 public void clearMatches() { 3611 if (mNativeClass == 0) 3612 return; 3613 mWebViewCore.removeMessages(EventHub.FIND_ALL); 3614 mWebViewCore.sendMessage(EventHub.FIND_ALL, null); 3615 } 3616 3617 3618 /** 3619 * Called when the find ActionMode ends. 3620 */ 3621 void notifyFindDialogDismissed() { 3622 mFindCallback = null; 3623 mCachedOverlappingActionModeHeight = -1; 3624 if (mWebViewCore == null) { 3625 return; 3626 } 3627 clearMatches(); 3628 setFindIsUp(false); 3629 // Now that the dialog has been removed, ensure that we scroll to a 3630 // location that is not beyond the end of the page. 3631 pinScrollTo(getScrollX(), getScrollY(), false, 0); 3632 invalidate(); 3633 } 3634 3635 /** 3636 * See {@link WebView#documentHasImages(Message)} 3637 */ 3638 @Override 3639 public void documentHasImages(Message response) { 3640 if (response == null) { 3641 return; 3642 } 3643 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3644 } 3645 3646 /** 3647 * Request the scroller to abort any ongoing animation 3648 */ 3649 public void stopScroll() { 3650 mScroller.forceFinished(true); 3651 mLastVelocity = 0; 3652 } 3653 3654 @Override 3655 public void computeScroll() { 3656 if (mScroller.computeScrollOffset()) { 3657 int oldX = getScrollX(); 3658 int oldY = getScrollY(); 3659 int x = mScroller.getCurrX(); 3660 int y = mScroller.getCurrY(); 3661 invalidate(); // So we draw again 3662 3663 if (!mScroller.isFinished()) { 3664 int rangeX = computeMaxScrollX(); 3665 int rangeY = computeMaxScrollY(); 3666 int overflingDistance = mOverflingDistance; 3667 3668 // Use the layer's scroll data if needed. 3669 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3670 oldX = mScrollingLayerRect.left; 3671 oldY = mScrollingLayerRect.top; 3672 rangeX = mScrollingLayerRect.right; 3673 rangeY = mScrollingLayerRect.bottom; 3674 // No overscrolling for layers. 3675 overflingDistance = 0; 3676 } else if (mTouchMode == TOUCH_DRAG_TEXT_MODE) { 3677 oldX = getTextScrollX(); 3678 oldY = getTextScrollY(); 3679 rangeX = getMaxTextScrollX(); 3680 rangeY = getMaxTextScrollY(); 3681 overflingDistance = 0; 3682 } 3683 3684 mWebViewPrivate.overScrollBy(x - oldX, y - oldY, oldX, oldY, 3685 rangeX, rangeY, 3686 overflingDistance, overflingDistance, false); 3687 3688 if (mOverScrollGlow != null) { 3689 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3690 } 3691 } else { 3692 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3693 // Update the layer position instead of WebView. 3694 scrollLayerTo(x, y); 3695 } else if (mTouchMode == TOUCH_DRAG_TEXT_MODE) { 3696 scrollEditText(x, y); 3697 } else { 3698 setScrollXRaw(x); 3699 setScrollYRaw(y); 3700 } 3701 abortAnimation(); 3702 nativeSetIsScrolling(false); 3703 if (!mBlockWebkitViewMessages) { 3704 WebViewCore.resumePriority(); 3705 if (!mSelectingText) { 3706 WebViewCore.resumeUpdatePicture(mWebViewCore); 3707 } 3708 } 3709 if (oldX != getScrollX() || oldY != getScrollY()) { 3710 sendOurVisibleRect(); 3711 } 3712 } 3713 } else { 3714 mWebViewPrivate.super_computeScroll(); 3715 } 3716 } 3717 3718 private void scrollLayerTo(int x, int y) { 3719 int dx = mScrollingLayerRect.left - x; 3720 int dy = mScrollingLayerRect.top - y; 3721 if ((dx == 0 && dy == 0) || mNativeClass == 0) { 3722 return; 3723 } 3724 if (mSelectingText) { 3725 if (mSelectCursorBaseLayerId == mCurrentScrollingLayerId) { 3726 mSelectCursorBase.offset(dx, dy); 3727 mSelectCursorBaseTextQuad.offset(dx, dy); 3728 } 3729 if (mSelectCursorExtentLayerId == mCurrentScrollingLayerId) { 3730 mSelectCursorExtent.offset(dx, dy); 3731 mSelectCursorExtentTextQuad.offset(dx, dy); 3732 } 3733 } else if (mHandleAlpha.getAlpha() > 0) { 3734 // stop fading as we're not going to move with the layer. 3735 mHandleAlphaAnimator.end(); 3736 } 3737 if (mAutoCompletePopup != null && 3738 mCurrentScrollingLayerId == mEditTextLayerId) { 3739 mEditTextContentBounds.offset(dx, dy); 3740 mAutoCompletePopup.resetRect(); 3741 } 3742 nativeScrollLayer(mNativeClass, mCurrentScrollingLayerId, x, y); 3743 mScrollingLayerRect.left = x; 3744 mScrollingLayerRect.top = y; 3745 mWebViewCore.sendMessage(WebViewCore.EventHub.SCROLL_LAYER, mCurrentScrollingLayerId, 3746 mScrollingLayerRect); 3747 mWebViewPrivate.onScrollChanged(getScrollX(), getScrollY(), getScrollX(), getScrollY()); 3748 invalidate(); 3749 } 3750 3751 private static int computeDuration(int dx, int dy) { 3752 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3753 int duration = distance * 1000 / STD_SPEED; 3754 return Math.min(duration, MAX_DURATION); 3755 } 3756 3757 // helper to pin the scrollBy parameters (already in view coordinates) 3758 // returns true if the scroll was changed 3759 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3760 return pinScrollTo(getScrollX() + dx, getScrollY() + dy, animate, animationDuration); 3761 } 3762 // helper to pin the scrollTo parameters (already in view coordinates) 3763 // returns true if the scroll was changed 3764 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3765 abortAnimation(); 3766 x = pinLocX(x); 3767 y = pinLocY(y); 3768 int dx = x - getScrollX(); 3769 int dy = y - getScrollY(); 3770 3771 if ((dx | dy) == 0) { 3772 return false; 3773 } 3774 if (animate) { 3775 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3776 mScroller.startScroll(getScrollX(), getScrollY(), dx, dy, 3777 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3778 mWebViewPrivate.awakenScrollBars(mScroller.getDuration()); 3779 invalidate(); 3780 } else { 3781 mWebView.scrollTo(x, y); 3782 } 3783 return true; 3784 } 3785 3786 // Scale from content to view coordinates, and pin. 3787 // Also called by jni webview.cpp 3788 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3789 if (mDrawHistory) { 3790 // disallow WebView to change the scroll position as History Picture 3791 // is used in the view system. 3792 // TODO: as we switchOutDrawHistory when trackball or navigation 3793 // keys are hit, this should be safe. Right? 3794 return false; 3795 } 3796 cx = contentToViewDimension(cx); 3797 cy = contentToViewDimension(cy); 3798 if (mHeightCanMeasure) { 3799 // move our visible rect according to scroll request 3800 if (cy != 0) { 3801 Rect tempRect = new Rect(); 3802 calcOurVisibleRect(tempRect); 3803 tempRect.offset(cx, cy); 3804 mWebView.requestRectangleOnScreen(tempRect); 3805 } 3806 // FIXME: We scroll horizontally no matter what because currently 3807 // ScrollView and ListView will not scroll horizontally. 3808 // FIXME: Why do we only scroll horizontally if there is no 3809 // vertical scroll? 3810// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3811 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3812 } else { 3813 return pinScrollBy(cx, cy, animate, 0); 3814 } 3815 } 3816 3817 /** 3818 * Called by CallbackProxy when the page starts loading. 3819 * @param url The URL of the page which has started loading. 3820 */ 3821 /* package */ void onPageStarted(String url) { 3822 // every time we start a new page, we want to reset the 3823 // WebView certificate: if the new site is secure, we 3824 // will reload it and get a new certificate set; 3825 // if the new site is not secure, the certificate must be 3826 // null, and that will be the case 3827 mWebView.setCertificate(null); 3828 3829 // reset the flag since we set to true in if need after 3830 // loading is see onPageFinished(Url) 3831 mAccessibilityScriptInjected = false; 3832 } 3833 3834 /** 3835 * Called by CallbackProxy when the page finishes loading. 3836 * @param url The URL of the page which has finished loading. 3837 */ 3838 /* package */ void onPageFinished(String url) { 3839 mZoomManager.onPageFinished(url); 3840 injectAccessibilityForUrl(url); 3841 } 3842 3843 /** 3844 * This method injects accessibility in the loaded document if accessibility 3845 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3846 * If no URL specific script is found or JavaScript is disabled we fallback to 3847 * the default {@link AccessibilityInjector} implementation. 3848 * </p> 3849 * If the URL has the "axs" paramter set to 1 it has already done the 3850 * script injection so we do nothing. If the parameter is set to 0 3851 * the URL opts out accessibility script injection so we fall back to 3852 * the default {@link AccessibilityInjector}. 3853 * </p> 3854 * Note: If the user has not opted-in the accessibility script injection no scripts 3855 * are injected rather the default {@link AccessibilityInjector} implementation 3856 * is used. 3857 * 3858 * @param url The URL loaded by this {@link WebView}. 3859 */ 3860 private void injectAccessibilityForUrl(String url) { 3861 if (mWebViewCore == null) { 3862 return; 3863 } 3864 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3865 3866 if (!accessibilityManager.isEnabled()) { 3867 // it is possible that accessibility was turned off between reloads 3868 ensureAccessibilityScriptInjectorInstance(false); 3869 return; 3870 } 3871 3872 if (!getSettings().getJavaScriptEnabled()) { 3873 // no JS so we fallback to the basic buil-in support 3874 ensureAccessibilityScriptInjectorInstance(true); 3875 return; 3876 } 3877 3878 // check the URL "axs" parameter to choose appropriate action 3879 int axsParameterValue = getAxsUrlParameterValue(url); 3880 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3881 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3882 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3883 if (onDeviceScriptInjectionEnabled) { 3884 ensureAccessibilityScriptInjectorInstance(false); 3885 // neither script injected nor script injection opted out => we inject 3886 mWebView.loadUrl(getScreenReaderInjectingJs()); 3887 // TODO: Set this flag after successfull script injection. Maybe upon injection 3888 // the chooser should update the meta tag and we check it to declare success 3889 mAccessibilityScriptInjected = true; 3890 } else { 3891 // injection disabled so we fallback to the basic built-in support 3892 ensureAccessibilityScriptInjectorInstance(true); 3893 } 3894 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3895 // injection opted out so we fallback to the basic buil-in support 3896 ensureAccessibilityScriptInjectorInstance(true); 3897 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3898 ensureAccessibilityScriptInjectorInstance(false); 3899 // the URL provides accessibility but we still need to add our generic script 3900 mWebView.loadUrl(getScreenReaderInjectingJs()); 3901 } else { 3902 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3903 } 3904 } 3905 3906 /** 3907 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3908 * 3909 * @param present True to ensure an insance, false to ensure no instance. 3910 */ 3911 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3912 if (present) { 3913 if (mAccessibilityInjector == null) { 3914 mAccessibilityInjector = new AccessibilityInjector(this); 3915 } 3916 } else { 3917 mAccessibilityInjector = null; 3918 } 3919 } 3920 3921 /** 3922 * Gets JavaScript that injects a screen-reader. 3923 * 3924 * @return The JavaScript snippet. 3925 */ 3926 private String getScreenReaderInjectingJs() { 3927 String screenReaderUrl = Settings.Secure.getString(mContext.getContentResolver(), 3928 Settings.Secure.ACCESSIBILITY_SCREEN_READER_URL); 3929 return String.format(ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE, screenReaderUrl); 3930 } 3931 3932 /** 3933 * Gets the "axs" URL parameter value. 3934 * 3935 * @param url A url to fetch the paramter from. 3936 * @return The parameter value if such, -1 otherwise. 3937 */ 3938 private int getAxsUrlParameterValue(String url) { 3939 if (mMatchAxsUrlParameterPattern == null) { 3940 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3941 } 3942 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3943 if (matcher.find()) { 3944 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3945 return Integer.parseInt(keyValuePair.split("=")[1]); 3946 } 3947 return -1; 3948 } 3949 3950 // scale from content to view coordinates, and pin 3951 private void contentScrollTo(int cx, int cy, boolean animate) { 3952 if (mDrawHistory) { 3953 // disallow WebView to change the scroll position as History Picture 3954 // is used in the view system. 3955 return; 3956 } 3957 int vx = contentToViewX(cx); 3958 int vy = contentToViewY(cy); 3959 pinScrollTo(vx, vy, animate, 0); 3960 } 3961 3962 /** 3963 * These are from webkit, and are in content coordinate system (unzoomed) 3964 */ 3965 private void contentSizeChanged(boolean updateLayout) { 3966 // suppress 0,0 since we usually see real dimensions soon after 3967 // this avoids drawing the prev content in a funny place. If we find a 3968 // way to consolidate these notifications, this check may become 3969 // obsolete 3970 if ((mContentWidth | mContentHeight) == 0) { 3971 return; 3972 } 3973 3974 if (mHeightCanMeasure) { 3975 if (mWebView.getMeasuredHeight() != contentToViewDimension(mContentHeight) 3976 || updateLayout) { 3977 mWebView.requestLayout(); 3978 } 3979 } else if (mWidthCanMeasure) { 3980 if (mWebView.getMeasuredWidth() != contentToViewDimension(mContentWidth) 3981 || updateLayout) { 3982 mWebView.requestLayout(); 3983 } 3984 } else { 3985 // If we don't request a layout, try to send our view size to the 3986 // native side to ensure that WebCore has the correct dimensions. 3987 sendViewSizeZoom(false); 3988 } 3989 } 3990 3991 /** 3992 * See {@link WebView#setWebViewClient(WebViewClient)} 3993 */ 3994 @Override 3995 public void setWebViewClient(WebViewClient client) { 3996 mCallbackProxy.setWebViewClient(client); 3997 } 3998 3999 /** 4000 * Gets the WebViewClient 4001 * @return the current WebViewClient instance. 4002 * 4003 * This is an implementation detail. 4004 */ 4005 public WebViewClient getWebViewClient() { 4006 return mCallbackProxy.getWebViewClient(); 4007 } 4008 4009 /** 4010 * See {@link WebView#setDownloadListener(DownloadListener)} 4011 */ 4012 @Override 4013 public void setDownloadListener(DownloadListener listener) { 4014 mCallbackProxy.setDownloadListener(listener); 4015 } 4016 4017 /** 4018 * See {@link WebView#setWebChromeClient(WebChromeClient)} 4019 */ 4020 @Override 4021 public void setWebChromeClient(WebChromeClient client) { 4022 mCallbackProxy.setWebChromeClient(client); 4023 } 4024 4025 /** 4026 * Gets the chrome handler. 4027 * @return the current WebChromeClient instance. 4028 * 4029 * This is an implementation detail. 4030 */ 4031 public WebChromeClient getWebChromeClient() { 4032 return mCallbackProxy.getWebChromeClient(); 4033 } 4034 4035 /** 4036 * Set the back/forward list client. This is an implementation of 4037 * WebBackForwardListClient for handling new items and changes in the 4038 * history index. 4039 * @param client An implementation of WebBackForwardListClient. 4040 */ 4041 public void setWebBackForwardListClient(WebBackForwardListClient client) { 4042 mCallbackProxy.setWebBackForwardListClient(client); 4043 } 4044 4045 /** 4046 * Gets the WebBackForwardListClient. 4047 */ 4048 public WebBackForwardListClient getWebBackForwardListClient() { 4049 return mCallbackProxy.getWebBackForwardListClient(); 4050 } 4051 4052 /** 4053 * See {@link WebView#setPictureListener(PictureListener)} 4054 */ 4055 @Override 4056 @Deprecated 4057 public void setPictureListener(PictureListener listener) { 4058 mPictureListener = listener; 4059 } 4060 4061 /* FIXME: Debug only! Remove for SDK! */ 4062 public void externalRepresentation(Message callback) { 4063 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 4064 } 4065 4066 /* FIXME: Debug only! Remove for SDK! */ 4067 public void documentAsText(Message callback) { 4068 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 4069 } 4070 4071 /** 4072 * See {@link WebView#addJavascriptInterface(Object, String)} 4073 */ 4074 @Override 4075 public void addJavascriptInterface(Object object, String name) { 4076 if (object == null) { 4077 return; 4078 } 4079 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4080 arg.mObject = object; 4081 arg.mInterfaceName = name; 4082 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 4083 } 4084 4085 /** 4086 * See {@link WebView#removeJavascriptInterface(String)} 4087 */ 4088 @Override 4089 public void removeJavascriptInterface(String interfaceName) { 4090 if (mWebViewCore != null) { 4091 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4092 arg.mInterfaceName = interfaceName; 4093 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 4094 } 4095 } 4096 4097 /** 4098 * See {@link WebView#getSettings()} 4099 * Note this returns WebSettingsClassic, a sub-class of WebSettings, which can be used 4100 * to access extension APIs. 4101 */ 4102 @Override 4103 public WebSettingsClassic getSettings() { 4104 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4105 } 4106 4107 /** 4108 * See {@link WebView#getPluginList()} 4109 */ 4110 @Deprecated 4111 public static synchronized PluginList getPluginList() { 4112 return new PluginList(); 4113 } 4114 4115 /** 4116 * See {@link WebView#refreshPlugins(boolean)} 4117 */ 4118 @Deprecated 4119 public void refreshPlugins(boolean reloadOpenPages) { 4120 } 4121 4122 //------------------------------------------------------------------------- 4123 // Override View methods 4124 //------------------------------------------------------------------------- 4125 4126 @Override 4127 protected void finalize() throws Throwable { 4128 try { 4129 if (mNativeClass != 0) { 4130 mPrivateHandler.post(new Runnable() { 4131 @Override 4132 public void run() { 4133 destroy(); 4134 } 4135 }); 4136 } 4137 } finally { 4138 super.finalize(); 4139 } 4140 } 4141 4142 private void drawContent(Canvas canvas) { 4143 if (mDrawHistory) { 4144 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4145 canvas.drawPicture(mHistoryPicture); 4146 return; 4147 } 4148 if (mNativeClass == 0) return; 4149 4150 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4151 boolean animateScroll = ((!mScroller.isFinished() 4152 || mVelocityTracker != null) 4153 && (mTouchMode != TOUCH_DRAG_MODE || 4154 mHeldMotionless != MOTIONLESS_TRUE)); 4155 if (mTouchMode == TOUCH_DRAG_MODE) { 4156 if (mHeldMotionless == MOTIONLESS_PENDING) { 4157 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4158 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4159 mHeldMotionless = MOTIONLESS_FALSE; 4160 } 4161 if (mHeldMotionless == MOTIONLESS_FALSE) { 4162 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4163 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4164 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4165 .obtainMessage(AWAKEN_SCROLL_BARS), 4166 ViewConfiguration.getScrollDefaultDelay()); 4167 mHeldMotionless = MOTIONLESS_PENDING; 4168 } 4169 } 4170 int saveCount = canvas.save(); 4171 if (animateZoom) { 4172 mZoomManager.animateZoom(canvas); 4173 } else if (!canvas.isHardwareAccelerated()) { 4174 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4175 } 4176 4177 boolean UIAnimationsRunning = false; 4178 // Currently for each draw we compute the animation values; 4179 // We may in the future decide to do that independently. 4180 if (mNativeClass != 0 && !canvas.isHardwareAccelerated() 4181 && nativeEvaluateLayersAnimations(mNativeClass)) { 4182 UIAnimationsRunning = true; 4183 // If we have unfinished (or unstarted) animations, 4184 // we ask for a repaint. We only need to do this in software 4185 // rendering (with hardware rendering we already have a different 4186 // method of requesting a repaint) 4187 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 4188 invalidate(); 4189 } 4190 4191 // decide which adornments to draw 4192 int extras = DRAW_EXTRAS_NONE; 4193 if (!mFindIsUp && mShowTextSelectionExtra) { 4194 extras = DRAW_EXTRAS_SELECTION; 4195 } 4196 4197 calcOurContentVisibleRectF(mVisibleContentRect); 4198 if (canvas.isHardwareAccelerated()) { 4199 Rect invScreenRect = mIsWebViewVisible ? mInvScreenRect : null; 4200 Rect screenRect = mIsWebViewVisible ? mScreenRect : null; 4201 4202 int functor = nativeCreateDrawGLFunction(mNativeClass, invScreenRect, 4203 screenRect, mVisibleContentRect, getScale(), extras); 4204 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4205 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 4206 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 4207 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 4208 } 4209 4210 } else { 4211 DrawFilter df = null; 4212 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4213 df = mZoomFilter; 4214 } else if (animateScroll) { 4215 df = mScrollFilter; 4216 } 4217 canvas.setDrawFilter(df); 4218 nativeDraw(canvas, mVisibleContentRect, mBackgroundColor, extras); 4219 canvas.setDrawFilter(null); 4220 } 4221 4222 canvas.restoreToCount(saveCount); 4223 drawTextSelectionHandles(canvas); 4224 4225 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4226 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4227 mTouchMode = TOUCH_SHORTPRESS_MODE; 4228 } 4229 } 4230 } 4231 4232 /** 4233 * Draw the background when beyond bounds 4234 * @param canvas Canvas to draw into 4235 */ 4236 private void drawOverScrollBackground(Canvas canvas) { 4237 if (mOverScrollBackground == null) { 4238 mOverScrollBackground = new Paint(); 4239 Bitmap bm = BitmapFactory.decodeResource( 4240 mContext.getResources(), 4241 com.android.internal.R.drawable.status_bar_background); 4242 mOverScrollBackground.setShader(new BitmapShader(bm, 4243 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4244 mOverScrollBorder = new Paint(); 4245 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4246 mOverScrollBorder.setStrokeWidth(0); 4247 mOverScrollBorder.setColor(0xffbbbbbb); 4248 } 4249 4250 int top = 0; 4251 int right = computeRealHorizontalScrollRange(); 4252 int bottom = top + computeRealVerticalScrollRange(); 4253 // first draw the background and anchor to the top of the view 4254 canvas.save(); 4255 canvas.translate(getScrollX(), getScrollY()); 4256 canvas.clipRect(-getScrollX(), top - getScrollY(), right - getScrollX(), bottom 4257 - getScrollY(), Region.Op.DIFFERENCE); 4258 canvas.drawPaint(mOverScrollBackground); 4259 canvas.restore(); 4260 // then draw the border 4261 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4262 // next clip the region for the content 4263 canvas.clipRect(0, top, right, bottom); 4264 } 4265 4266 @Override 4267 public void onDraw(Canvas canvas) { 4268 if (inFullScreenMode()) { 4269 return; // no need to draw anything if we aren't visible. 4270 } 4271 // if mNativeClass is 0, the WebView is either destroyed or not 4272 // initialized. In either case, just draw the background color and return 4273 if (mNativeClass == 0) { 4274 canvas.drawColor(mBackgroundColor); 4275 return; 4276 } 4277 4278 // if both mContentWidth and mContentHeight are 0, it means there is no 4279 // valid Picture passed to WebView yet. This can happen when WebView 4280 // just starts. Draw the background and return. 4281 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4282 canvas.drawColor(mBackgroundColor); 4283 return; 4284 } 4285 4286 if (canvas.isHardwareAccelerated()) { 4287 mZoomManager.setHardwareAccelerated(); 4288 } else { 4289 mWebViewCore.resumeWebKitDraw(); 4290 } 4291 4292 int saveCount = canvas.save(); 4293 if (mInOverScrollMode && !getSettings() 4294 .getUseWebViewBackgroundForOverscrollBackground()) { 4295 drawOverScrollBackground(canvas); 4296 } 4297 4298 canvas.translate(0, getTitleHeight()); 4299 drawContent(canvas); 4300 canvas.restoreToCount(saveCount); 4301 4302 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4303 invalidate(); 4304 } 4305 mWebViewCore.signalRepaintDone(); 4306 4307 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4308 invalidate(); 4309 } 4310 4311 if (mFocusTransition != null) { 4312 mFocusTransition.draw(canvas); 4313 } else if (shouldDrawHighlightRect()) { 4314 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4315 Rect r = new Rect(); 4316 while (iter.next(r)) { 4317 canvas.drawRect(r, mTouchHightlightPaint); 4318 } 4319 } 4320 if (DEBUG_TOUCH_HIGHLIGHT) { 4321 if (getSettings().getNavDump()) { 4322 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4323 if (mTouchCrossHairColor == null) { 4324 mTouchCrossHairColor = new Paint(); 4325 mTouchCrossHairColor.setColor(Color.RED); 4326 } 4327 canvas.drawLine(mTouchHighlightX - mNavSlop, 4328 mTouchHighlightY - mNavSlop, mTouchHighlightX 4329 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4330 + 1, mTouchCrossHairColor); 4331 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4332 mTouchHighlightY - mNavSlop, mTouchHighlightX 4333 - mNavSlop, 4334 mTouchHighlightY + mNavSlop + 1, 4335 mTouchCrossHairColor); 4336 } 4337 } 4338 } 4339 } 4340 4341 private void removeTouchHighlight() { 4342 if (mWebViewCore != null) { 4343 mWebViewCore.removeMessages(EventHub.HIT_TEST); 4344 } 4345 mPrivateHandler.removeMessages(HIT_TEST_RESULT); 4346 setTouchHighlightRects(null); 4347 } 4348 4349 @Override 4350 public void setLayoutParams(ViewGroup.LayoutParams params) { 4351 if (params.height == AbsoluteLayout.LayoutParams.WRAP_CONTENT) { 4352 mWrapContent = true; 4353 } 4354 mWebViewPrivate.super_setLayoutParams(params); 4355 } 4356 4357 @Override 4358 public boolean performLongClick() { 4359 // performLongClick() is the result of a delayed message. If we switch 4360 // to windows overview, the WebView will be temporarily removed from the 4361 // view system. In that case, do nothing. 4362 if (mWebView.getParent() == null) return false; 4363 4364 // A multi-finger gesture can look like a long press; make sure we don't take 4365 // long press actions if we're scaling. 4366 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4367 if (detector != null && detector.isInProgress()) { 4368 return false; 4369 } 4370 4371 if (mSelectingText) return false; // long click does nothing on selection 4372 /* if long click brings up a context menu, the super function 4373 * returns true and we're done. Otherwise, nothing happened when 4374 * the user clicked. */ 4375 if (mWebViewPrivate.super_performLongClick()) { 4376 return true; 4377 } 4378 /* In the case where the application hasn't already handled the long 4379 * click action, look for a word under the click. If one is found, 4380 * animate the text selection into view. 4381 * FIXME: no animation code yet */ 4382 final boolean isSelecting = selectText(); 4383 if (isSelecting) { 4384 mWebView.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4385 } else if (focusCandidateIsEditableText()) { 4386 mSelectCallback = new SelectActionModeCallback(); 4387 mSelectCallback.setWebView(this); 4388 mSelectCallback.setTextSelected(false); 4389 mWebView.startActionMode(mSelectCallback); 4390 } 4391 return isSelecting; 4392 } 4393 4394 /** 4395 * Select the word at the last click point. 4396 * 4397 * This is an implementation detail. 4398 */ 4399 public boolean selectText() { 4400 int x = viewToContentX(mLastTouchX + getScrollX()); 4401 int y = viewToContentY(mLastTouchY + getScrollY()); 4402 return selectText(x, y); 4403 } 4404 4405 /** 4406 * Select the word at the indicated content coordinates. 4407 */ 4408 boolean selectText(int x, int y) { 4409 if (mWebViewCore == null) { 4410 return false; 4411 } 4412 mWebViewCore.sendMessage(EventHub.SELECT_WORD_AT, x, y); 4413 return true; 4414 } 4415 4416 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4417 4418 @Override 4419 public void onConfigurationChanged(Configuration newConfig) { 4420 mCachedOverlappingActionModeHeight = -1; 4421 if (mSelectingText && mOrientation != newConfig.orientation) { 4422 selectionDone(); 4423 } 4424 mOrientation = newConfig.orientation; 4425 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 4426 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4427 } 4428 } 4429 4430 /** 4431 * Keep track of the Callback so we can end its ActionMode or remove its 4432 * titlebar. 4433 */ 4434 private SelectActionModeCallback mSelectCallback; 4435 4436 void setBaseLayer(int layer, boolean showVisualIndicator, 4437 boolean isPictureAfterFirstLayout) { 4438 if (mNativeClass == 0) 4439 return; 4440 boolean queueFull; 4441 queueFull = nativeSetBaseLayer(mNativeClass, layer, 4442 showVisualIndicator, isPictureAfterFirstLayout); 4443 4444 if (queueFull) { 4445 mWebViewCore.pauseWebKitDraw(); 4446 } else { 4447 mWebViewCore.resumeWebKitDraw(); 4448 } 4449 4450 if (mHTML5VideoViewProxy != null) { 4451 mHTML5VideoViewProxy.setBaseLayer(layer); 4452 } 4453 } 4454 4455 int getBaseLayer() { 4456 if (mNativeClass == 0) { 4457 return 0; 4458 } 4459 return nativeGetBaseLayer(mNativeClass); 4460 } 4461 4462 private void onZoomAnimationStart() { 4463 if (!mSelectingText && mHandleAlpha.getAlpha() > 0) { 4464 mHandleAlphaAnimator.end(); 4465 } 4466 } 4467 4468 private void onZoomAnimationEnd() { 4469 mPrivateHandler.sendEmptyMessage(RELOCATE_AUTO_COMPLETE_POPUP); 4470 } 4471 4472 void onFixedLengthZoomAnimationStart() { 4473 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4474 onZoomAnimationStart(); 4475 } 4476 4477 void onFixedLengthZoomAnimationEnd() { 4478 if (!mBlockWebkitViewMessages && !mSelectingText) { 4479 WebViewCore.resumeUpdatePicture(mWebViewCore); 4480 } 4481 onZoomAnimationEnd(); 4482 } 4483 4484 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4485 Paint.DITHER_FLAG | 4486 Paint.SUBPIXEL_TEXT_FLAG; 4487 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4488 Paint.DITHER_FLAG; 4489 4490 private final DrawFilter mZoomFilter = 4491 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4492 // If we need to trade better quality for speed, set mScrollFilter to null 4493 private final DrawFilter mScrollFilter = 4494 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4495 4496 private class SelectionHandleAlpha { 4497 private int mAlpha = 0; 4498 public void setAlpha(int alpha) { 4499 mAlpha = alpha; 4500 if (mSelectHandleCenter != null) { 4501 mSelectHandleCenter.setAlpha(alpha); 4502 mSelectHandleLeft.setAlpha(alpha); 4503 mSelectHandleRight.setAlpha(alpha); 4504 // TODO: Use partial invalidate 4505 invalidate(); 4506 } 4507 } 4508 4509 public int getAlpha() { 4510 return mAlpha; 4511 } 4512 4513 } 4514 4515 private void startSelectingText() { 4516 mSelectingText = true; 4517 mShowTextSelectionExtra = true; 4518 mHandleAlphaAnimator.setIntValues(255); 4519 mHandleAlphaAnimator.start(); 4520 } 4521 private void endSelectingText() { 4522 mSelectingText = false; 4523 mShowTextSelectionExtra = false; 4524 mHandleAlphaAnimator.setIntValues(0); 4525 mHandleAlphaAnimator.start(); 4526 } 4527 4528 private void ensureSelectionHandles() { 4529 if (mSelectHandleCenter == null) { 4530 mSelectHandleCenter = mContext.getResources().getDrawable( 4531 com.android.internal.R.drawable.text_select_handle_middle); 4532 mSelectHandleLeft = mContext.getResources().getDrawable( 4533 com.android.internal.R.drawable.text_select_handle_left); 4534 mSelectHandleRight = mContext.getResources().getDrawable( 4535 com.android.internal.R.drawable.text_select_handle_right); 4536 mHandleAlpha.setAlpha(mHandleAlpha.getAlpha()); 4537 mSelectHandleCenterOffset = new Point(0, 4538 -mSelectHandleCenter.getIntrinsicHeight()); 4539 mSelectHandleLeftOffset = new Point(0, 4540 -mSelectHandleLeft.getIntrinsicHeight()); 4541 mSelectHandleRightOffset = new Point( 4542 -mSelectHandleLeft.getIntrinsicWidth() / 2, 4543 -mSelectHandleRight.getIntrinsicHeight()); 4544 } 4545 } 4546 4547 private void drawTextSelectionHandles(Canvas canvas) { 4548 if (mHandleAlpha.getAlpha() == 0) { 4549 return; 4550 } 4551 ensureSelectionHandles(); 4552 if (mSelectingText) { 4553 int[] handles = new int[4]; 4554 getSelectionHandles(handles); 4555 int start_x = contentToViewDimension(handles[0]); 4556 int start_y = contentToViewDimension(handles[1]); 4557 int end_x = contentToViewDimension(handles[2]); 4558 int end_y = contentToViewDimension(handles[3]); 4559 4560 if (mIsCaretSelection) { 4561 // Caret handle is centered 4562 start_x -= (mSelectHandleCenter.getIntrinsicWidth() / 2); 4563 mSelectHandleCenter.setBounds(start_x, start_y, 4564 start_x + mSelectHandleCenter.getIntrinsicWidth(), 4565 start_y + mSelectHandleCenter.getIntrinsicHeight()); 4566 } else { 4567 // Magic formula copied from TextView 4568 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 4569 mSelectHandleLeft.setBounds(start_x, start_y, 4570 start_x + mSelectHandleLeft.getIntrinsicWidth(), 4571 start_y + mSelectHandleLeft.getIntrinsicHeight()); 4572 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 4573 mSelectHandleRight.setBounds(end_x, end_y, 4574 end_x + mSelectHandleRight.getIntrinsicWidth(), 4575 end_y + mSelectHandleRight.getIntrinsicHeight()); 4576 } 4577 } 4578 4579 if (mIsCaretSelection) { 4580 mSelectHandleCenter.draw(canvas); 4581 } else { 4582 mSelectHandleLeft.draw(canvas); 4583 mSelectHandleRight.draw(canvas); 4584 } 4585 } 4586 4587 /** 4588 * Takes an int[4] array as an output param with the values being 4589 * startX, startY, endX, endY 4590 */ 4591 private void getSelectionHandles(int[] handles) { 4592 handles[0] = mSelectCursorBase.x; 4593 handles[1] = mSelectCursorBase.y; 4594 handles[2] = mSelectCursorExtent.x; 4595 handles[3] = mSelectCursorExtent.y; 4596 if (!nativeIsBaseFirst(mNativeClass)) { 4597 int swap = handles[0]; 4598 handles[0] = handles[2]; 4599 handles[2] = swap; 4600 swap = handles[1]; 4601 handles[1] = handles[3]; 4602 handles[3] = swap; 4603 } 4604 } 4605 4606 // draw history 4607 private boolean mDrawHistory = false; 4608 private Picture mHistoryPicture = null; 4609 private int mHistoryWidth = 0; 4610 private int mHistoryHeight = 0; 4611 4612 // Only check the flag, can be called from WebCore thread 4613 boolean drawHistory() { 4614 return mDrawHistory; 4615 } 4616 4617 int getHistoryPictureWidth() { 4618 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4619 } 4620 4621 // Should only be called in UI thread 4622 void switchOutDrawHistory() { 4623 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4624 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4625 mDrawHistory = false; 4626 mHistoryPicture = null; 4627 invalidate(); 4628 int oldScrollX = getScrollX(); 4629 int oldScrollY = getScrollY(); 4630 setScrollXRaw(pinLocX(getScrollX())); 4631 setScrollYRaw(pinLocY(getScrollY())); 4632 if (oldScrollX != getScrollX() || oldScrollY != getScrollY()) { 4633 mWebViewPrivate.onScrollChanged(getScrollX(), getScrollY(), oldScrollX, oldScrollY); 4634 } else { 4635 sendOurVisibleRect(); 4636 } 4637 } 4638 } 4639 4640 /** 4641 * Delete text from start to end in the focused textfield. If there is no 4642 * focus, or if start == end, silently fail. If start and end are out of 4643 * order, swap them. 4644 * @param start Beginning of selection to delete. 4645 * @param end End of selection to delete. 4646 */ 4647 /* package */ void deleteSelection(int start, int end) { 4648 mTextGeneration++; 4649 WebViewCore.TextSelectionData data 4650 = new WebViewCore.TextSelectionData(start, end, 0); 4651 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4652 data); 4653 } 4654 4655 /** 4656 * Set the selection to (start, end) in the focused textfield. If start and 4657 * end are out of order, swap them. 4658 * @param start Beginning of selection. 4659 * @param end End of selection. 4660 */ 4661 /* package */ void setSelection(int start, int end) { 4662 if (mWebViewCore != null) { 4663 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4664 } 4665 } 4666 4667 @Override 4668 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4669 if (mInputConnection == null) { 4670 mInputConnection = new WebViewInputConnection(); 4671 mAutoCompletePopup = new AutoCompletePopup(this, mInputConnection); 4672 } 4673 mInputConnection.setupEditorInfo(outAttrs); 4674 return mInputConnection; 4675 } 4676 4677 private void relocateAutoCompletePopup() { 4678 if (mAutoCompletePopup != null) { 4679 mAutoCompletePopup.resetRect(); 4680 mAutoCompletePopup.setText(mInputConnection.getEditable()); 4681 } 4682 } 4683 4684 /** 4685 * Called in response to a message from webkit telling us that the soft 4686 * keyboard should be launched. 4687 */ 4688 private void displaySoftKeyboard(boolean isTextView) { 4689 InputMethodManager imm = (InputMethodManager) 4690 mContext.getSystemService(Context.INPUT_METHOD_SERVICE); 4691 4692 // bring it back to the default level scale so that user can enter text 4693 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4694 if (zoom) { 4695 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4696 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4697 } 4698 // Used by plugins and contentEditable. 4699 // Also used if the navigation cache is out of date, and 4700 // does not recognize that a textfield is in focus. In that 4701 // case, use WebView as the targeted view. 4702 // see http://b/issue?id=2457459 4703 imm.showSoftInput(mWebView, 0); 4704 } 4705 4706 // Called by WebKit to instruct the UI to hide the keyboard 4707 private void hideSoftKeyboard() { 4708 InputMethodManager imm = InputMethodManager.peekInstance(); 4709 if (imm != null && (imm.isActive(mWebView))) { 4710 imm.hideSoftInputFromWindow(mWebView.getWindowToken(), 0); 4711 } 4712 } 4713 4714 /** 4715 * Called by AutoCompletePopup to find saved form data associated with the 4716 * textfield 4717 * @param name Name of the textfield. 4718 * @param nodePointer Pointer to the node of the textfield, so it can be 4719 * compared to the currently focused textfield when the data is 4720 * retrieved. 4721 * @param autoFillable true if WebKit has determined this field is part of 4722 * a form that can be auto filled. 4723 * @param autoComplete true if the attribute "autocomplete" is set to true 4724 * on the textfield. 4725 */ 4726 /* package */ void requestFormData(String name, int nodePointer, 4727 boolean autoFillable, boolean autoComplete) { 4728 if (mWebViewCore.getSettings().getSaveFormData()) { 4729 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4730 update.arg1 = nodePointer; 4731 RequestFormData updater = new RequestFormData(name, getUrl(), 4732 update, autoFillable, autoComplete); 4733 Thread t = new Thread(updater); 4734 t.start(); 4735 } 4736 } 4737 4738 /* 4739 * This class requests an Adapter for the AutoCompletePopup which shows past 4740 * entries stored in the database. It is a Runnable so that it can be done 4741 * in its own thread, without slowing down the UI. 4742 */ 4743 private class RequestFormData implements Runnable { 4744 private String mName; 4745 private String mUrl; 4746 private Message mUpdateMessage; 4747 private boolean mAutoFillable; 4748 private boolean mAutoComplete; 4749 private WebSettingsClassic mWebSettings; 4750 4751 public RequestFormData(String name, String url, Message msg, 4752 boolean autoFillable, boolean autoComplete) { 4753 mName = name; 4754 mUrl = WebTextView.urlForAutoCompleteData(url); 4755 mUpdateMessage = msg; 4756 mAutoFillable = autoFillable; 4757 mAutoComplete = autoComplete; 4758 mWebSettings = getSettings(); 4759 } 4760 4761 @Override 4762 public void run() { 4763 ArrayList<String> pastEntries = new ArrayList<String>(); 4764 4765 if (mAutoFillable) { 4766 // Note that code inside the adapter click handler in AutoCompletePopup depends 4767 // on the AutoFill item being at the top of the drop down list. If you change 4768 // the order, make sure to do it there too! 4769 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 4770 pastEntries.add(mWebView.getResources().getText( 4771 com.android.internal.R.string.autofill_this_form).toString() + 4772 " " + 4773 mAutoFillData.getPreviewString()); 4774 mAutoCompletePopup.setIsAutoFillProfileSet(true); 4775 } else { 4776 // There is no autofill profile set up yet, so add an option that 4777 // will invite the user to set their profile up. 4778 pastEntries.add(mWebView.getResources().getText( 4779 com.android.internal.R.string.setup_autofill).toString()); 4780 mAutoCompletePopup.setIsAutoFillProfileSet(false); 4781 } 4782 } 4783 4784 if (mAutoComplete) { 4785 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4786 } 4787 4788 if (pastEntries.size() > 0) { 4789 ArrayAdapter<String> adapter = new ArrayAdapter<String>( 4790 mContext, 4791 com.android.internal.R.layout.web_text_view_dropdown, 4792 pastEntries); 4793 mUpdateMessage.obj = adapter; 4794 mUpdateMessage.sendToTarget(); 4795 } 4796 } 4797 } 4798 4799 /** 4800 * Dump the display tree to "/sdcard/displayTree.txt" 4801 * 4802 * debug only 4803 */ 4804 public void dumpDisplayTree() { 4805 nativeDumpDisplayTree(getUrl()); 4806 } 4807 4808 /** 4809 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4810 * "/sdcard/domTree.txt" 4811 * 4812 * debug only 4813 */ 4814 public void dumpDomTree(boolean toFile) { 4815 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4816 } 4817 4818 /** 4819 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4820 * to "/sdcard/renderTree.txt" 4821 * 4822 * debug only 4823 */ 4824 public void dumpRenderTree(boolean toFile) { 4825 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4826 } 4827 4828 /** 4829 * Called by DRT on UI thread, need to proxy to WebCore thread. 4830 * 4831 * debug only 4832 */ 4833 public void setUseMockDeviceOrientation() { 4834 mWebViewCore.sendMessage(EventHub.SET_USE_MOCK_DEVICE_ORIENTATION); 4835 } 4836 4837 /** 4838 * Called by DRT on WebCore thread. 4839 * 4840 * debug only 4841 */ 4842 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4843 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4844 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4845 canProvideGamma, gamma); 4846 } 4847 4848 // This is used to determine long press with the center key. Does not 4849 // affect long press with the trackball/touch. 4850 private boolean mGotCenterDown = false; 4851 4852 @Override 4853 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4854 if (mBlockWebkitViewMessages) { 4855 return false; 4856 } 4857 // send complex characters to webkit for use by JS and plugins 4858 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4859 // pass the key to DOM 4860 sendBatchableInputMessage(EventHub.KEY_DOWN, 0, 0, event); 4861 sendBatchableInputMessage(EventHub.KEY_UP, 0, 0, event); 4862 // return true as DOM handles the key 4863 return true; 4864 } 4865 return false; 4866 } 4867 4868 private boolean isEnterActionKey(int keyCode) { 4869 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4870 || keyCode == KeyEvent.KEYCODE_ENTER 4871 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4872 } 4873 4874 public boolean onKeyPreIme(int keyCode, KeyEvent event) { 4875 if (mAutoCompletePopup != null) { 4876 return mAutoCompletePopup.onKeyPreIme(keyCode, event); 4877 } 4878 return false; 4879 } 4880 4881 @Override 4882 public boolean onKeyDown(int keyCode, KeyEvent event) { 4883 if (DebugFlags.WEB_VIEW) { 4884 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4885 + "keyCode=" + keyCode 4886 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4887 } 4888 if (mIsCaretSelection) { 4889 selectionDone(); 4890 } 4891 if (mBlockWebkitViewMessages) { 4892 return false; 4893 } 4894 4895 // don't implement accelerator keys here; defer to host application 4896 if (event.isCtrlPressed()) { 4897 return false; 4898 } 4899 4900 if (mNativeClass == 0) { 4901 return false; 4902 } 4903 4904 // do this hack up front, so it always works, regardless of touch-mode 4905 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4906 mAutoRedraw = !mAutoRedraw; 4907 if (mAutoRedraw) { 4908 invalidate(); 4909 } 4910 return true; 4911 } 4912 4913 // Bubble up the key event if 4914 // 1. it is a system key; or 4915 // 2. the host application wants to handle it; 4916 if (event.isSystem() 4917 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4918 return false; 4919 } 4920 4921 // accessibility support 4922 if (accessibilityScriptInjected()) { 4923 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4924 // if an accessibility script is injected we delegate to it the key handling. 4925 // this script is a screen reader which is a fully fledged solution for blind 4926 // users to navigate in and interact with web pages. 4927 sendBatchableInputMessage(EventHub.KEY_DOWN, 0, 0, event); 4928 return true; 4929 } else { 4930 // Clean up if accessibility was disabled after loading the current URL. 4931 mAccessibilityScriptInjected = false; 4932 } 4933 } else if (mAccessibilityInjector != null) { 4934 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4935 if (mAccessibilityInjector.onKeyEvent(event)) { 4936 // if an accessibility injector is present (no JavaScript enabled or the site 4937 // opts out injecting our JavaScript screen reader) we let it decide whether 4938 // to act on and consume the event. 4939 return true; 4940 } 4941 } else { 4942 // Clean up if accessibility was disabled after loading the current URL. 4943 mAccessibilityInjector = null; 4944 } 4945 } 4946 4947 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4948 if (event.hasNoModifiers()) { 4949 pageUp(false); 4950 return true; 4951 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4952 pageUp(true); 4953 return true; 4954 } 4955 } 4956 4957 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4958 if (event.hasNoModifiers()) { 4959 pageDown(false); 4960 return true; 4961 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4962 pageDown(true); 4963 return true; 4964 } 4965 } 4966 4967 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 4968 pageUp(true); 4969 return true; 4970 } 4971 4972 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 4973 pageDown(true); 4974 return true; 4975 } 4976 4977 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4978 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4979 switchOutDrawHistory(); 4980 } 4981 4982 if (isEnterActionKey(keyCode)) { 4983 switchOutDrawHistory(); 4984 if (event.getRepeatCount() == 0) { 4985 if (mSelectingText) { 4986 return true; // discard press if copy in progress 4987 } 4988 mGotCenterDown = true; 4989 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4990 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4991 } 4992 } 4993 4994 if (getSettings().getNavDump()) { 4995 switch (keyCode) { 4996 case KeyEvent.KEYCODE_4: 4997 dumpDisplayTree(); 4998 break; 4999 case KeyEvent.KEYCODE_5: 5000 case KeyEvent.KEYCODE_6: 5001 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5002 break; 5003 case KeyEvent.KEYCODE_7: 5004 case KeyEvent.KEYCODE_8: 5005 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5006 break; 5007 } 5008 } 5009 5010 // pass the key to DOM 5011 sendKeyEvent(event); 5012 // return true as DOM handles the key 5013 return true; 5014 } 5015 5016 @Override 5017 public boolean onKeyUp(int keyCode, KeyEvent event) { 5018 if (DebugFlags.WEB_VIEW) { 5019 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5020 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5021 } 5022 if (mBlockWebkitViewMessages) { 5023 return false; 5024 } 5025 5026 if (mNativeClass == 0) { 5027 return false; 5028 } 5029 5030 // special CALL handling when cursor node's href is "tel:XXX" 5031 if (keyCode == KeyEvent.KEYCODE_CALL 5032 && mInitialHitTestResult != null 5033 && mInitialHitTestResult.getType() == HitTestResult.PHONE_TYPE) { 5034 String text = mInitialHitTestResult.getExtra(); 5035 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5036 mContext.startActivity(intent); 5037 return true; 5038 } 5039 5040 // Bubble up the key event if 5041 // 1. it is a system key; or 5042 // 2. the host application wants to handle it; 5043 if (event.isSystem() 5044 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5045 return false; 5046 } 5047 5048 // accessibility support 5049 if (accessibilityScriptInjected()) { 5050 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5051 // if an accessibility script is injected we delegate to it the key handling. 5052 // this script is a screen reader which is a fully fledged solution for blind 5053 // users to navigate in and interact with web pages. 5054 sendBatchableInputMessage(EventHub.KEY_UP, 0, 0, event); 5055 return true; 5056 } else { 5057 // Clean up if accessibility was disabled after loading the current URL. 5058 mAccessibilityScriptInjected = false; 5059 } 5060 } else if (mAccessibilityInjector != null) { 5061 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5062 if (mAccessibilityInjector.onKeyEvent(event)) { 5063 // if an accessibility injector is present (no JavaScript enabled or the site 5064 // opts out injecting our JavaScript screen reader) we let it decide whether to 5065 // act on and consume the event. 5066 return true; 5067 } 5068 } else { 5069 // Clean up if accessibility was disabled after loading the current URL. 5070 mAccessibilityInjector = null; 5071 } 5072 } 5073 5074 if (isEnterActionKey(keyCode)) { 5075 // remove the long press message first 5076 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5077 mGotCenterDown = false; 5078 5079 if (mSelectingText) { 5080 copySelection(); 5081 selectionDone(); 5082 return true; // discard press if copy in progress 5083 } 5084 } 5085 5086 // pass the key to DOM 5087 sendKeyEvent(event); 5088 // return true as DOM handles the key 5089 return true; 5090 } 5091 5092 private boolean startSelectActionMode() { 5093 mSelectCallback = new SelectActionModeCallback(); 5094 mSelectCallback.setTextSelected(!mIsCaretSelection); 5095 mSelectCallback.setWebView(this); 5096 if (mWebView.startActionMode(mSelectCallback) == null) { 5097 // There is no ActionMode, so do not allow the user to modify a 5098 // selection. 5099 selectionDone(); 5100 return false; 5101 } 5102 mWebView.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 5103 return true; 5104 } 5105 5106 private void showPasteWindow() { 5107 ClipboardManager cm = (ClipboardManager)(mContext 5108 .getSystemService(Context.CLIPBOARD_SERVICE)); 5109 if (cm.hasPrimaryClip()) { 5110 Point cursorPoint = new Point(contentToViewX(mSelectCursorBase.x), 5111 contentToViewY(mSelectCursorBase.y)); 5112 Point cursorTop = calculateCaretTop(); 5113 cursorTop.set(contentToViewX(cursorTop.x), 5114 contentToViewY(cursorTop.y)); 5115 5116 int[] location = new int[2]; 5117 mWebView.getLocationInWindow(location); 5118 int offsetX = location[0] - getScrollX(); 5119 int offsetY = location[1] - getScrollY(); 5120 cursorPoint.offset(offsetX, offsetY); 5121 cursorTop.offset(offsetX, offsetY); 5122 if (mPasteWindow == null) { 5123 mPasteWindow = new PastePopupWindow(); 5124 } 5125 mPasteWindow.show(cursorPoint, cursorTop, location[0], location[1]); 5126 } 5127 } 5128 5129 /** 5130 * Given segment AB, this finds the point C along AB that is closest to 5131 * point and then returns it scale along AB. The scale factor is AC/AB. 5132 * 5133 * @param x The x coordinate of the point near segment AB that determines 5134 * the scale factor. 5135 * @param y The y coordinate of the point near segment AB that determines 5136 * the scale factor. 5137 * @param a The first point of the line segment. 5138 * @param b The second point of the line segment. 5139 * @return The scale factor AC/AB, where C is the point on AB closest to 5140 * point. 5141 */ 5142 private static float scaleAlongSegment(int x, int y, PointF a, PointF b) { 5143 // The bottom line of the text box is line AB 5144 float abX = b.x - a.x; 5145 float abY = b.y - a.y; 5146 float ab2 = (abX * abX) + (abY * abY); 5147 5148 // The line from first point in text bounds to bottom is AP 5149 float apX = x - a.x; 5150 float apY = y - a.y; 5151 float abDotAP = (apX * abX) + (apY * abY); 5152 float scale = abDotAP / ab2; 5153 return scale; 5154 } 5155 5156 /** 5157 * Assuming arbitrary shape of a quadralateral forming text bounds, this 5158 * calculates the top of a caret. 5159 */ 5160 private Point calculateCaretTop() { 5161 float scale = scaleAlongSegment(mSelectCursorBase.x, mSelectCursorBase.y, 5162 mSelectCursorBaseTextQuad.p4, mSelectCursorBaseTextQuad.p3); 5163 int x = Math.round(scaleCoordinate(scale, 5164 mSelectCursorBaseTextQuad.p1.x, mSelectCursorBaseTextQuad.p2.x)); 5165 int y = Math.round(scaleCoordinate(scale, 5166 mSelectCursorBaseTextQuad.p1.y, mSelectCursorBaseTextQuad.p2.y)); 5167 return new Point(x, y); 5168 } 5169 5170 private void hidePasteButton() { 5171 if (mPasteWindow != null) { 5172 mPasteWindow.hide(); 5173 } 5174 } 5175 5176 private void syncSelectionCursors() { 5177 mSelectCursorBaseLayerId = 5178 nativeGetHandleLayerId(mNativeClass, HANDLE_ID_BASE, 5179 mSelectCursorBase, mSelectCursorBaseTextQuad); 5180 mSelectCursorExtentLayerId = 5181 nativeGetHandleLayerId(mNativeClass, HANDLE_ID_EXTENT, 5182 mSelectCursorExtent, mSelectCursorExtentTextQuad); 5183 } 5184 5185 private void adjustSelectionCursors() { 5186 boolean wasDraggingStart = (mSelectDraggingCursor == mSelectCursorBase); 5187 int oldX = mSelectDraggingCursor.x; 5188 int oldY = mSelectDraggingCursor.y; 5189 int oldStartX = mSelectCursorBase.x; 5190 int oldStartY = mSelectCursorBase.y; 5191 int oldEndX = mSelectCursorExtent.x; 5192 int oldEndY = mSelectCursorExtent.y; 5193 5194 syncSelectionCursors(); 5195 boolean dragChanged = oldX != mSelectDraggingCursor.x || 5196 oldY != mSelectDraggingCursor.y; 5197 if (dragChanged && !mIsCaretSelection) { 5198 boolean draggingStart; 5199 if (wasDraggingStart) { 5200 float endStart = distanceSquared(oldEndX, oldEndY, 5201 mSelectCursorBase); 5202 float endEnd = distanceSquared(oldEndX, oldEndY, 5203 mSelectCursorExtent); 5204 draggingStart = endStart > endEnd; 5205 } else { 5206 float startStart = distanceSquared(oldStartX, oldStartY, 5207 mSelectCursorBase); 5208 float startEnd = distanceSquared(oldStartX, oldStartY, 5209 mSelectCursorExtent); 5210 draggingStart = startStart > startEnd; 5211 } 5212 mSelectDraggingCursor = (draggingStart 5213 ? mSelectCursorBase : mSelectCursorExtent); 5214 mSelectDraggingTextQuad = (draggingStart 5215 ? mSelectCursorBaseTextQuad : mSelectCursorExtentTextQuad); 5216 mSelectDraggingOffset = (draggingStart 5217 ? mSelectHandleLeftOffset : mSelectHandleRightOffset); 5218 } 5219 mSelectDraggingCursor.set(oldX, oldY); 5220 } 5221 5222 private float distanceSquared(int x, int y, Point p) { 5223 float dx = p.x - x; 5224 float dy = p.y - y; 5225 return (dx * dx) + (dy * dy); 5226 } 5227 5228 private boolean setupWebkitSelect() { 5229 syncSelectionCursors(); 5230 if (!mIsCaretSelection && !startSelectActionMode()) { 5231 selectionDone(); 5232 return false; 5233 } 5234 startSelectingText(); 5235 mTouchMode = TOUCH_DRAG_MODE; 5236 return true; 5237 } 5238 5239 private void updateWebkitSelection() { 5240 int[] handles = null; 5241 if (mIsCaretSelection) { 5242 mSelectCursorExtent.set(mSelectCursorBase.x, mSelectCursorBase.y); 5243 } 5244 if (mSelectingText) { 5245 handles = new int[4]; 5246 handles[0] = mSelectCursorBase.x; 5247 handles[1] = mSelectCursorBase.y; 5248 handles[2] = mSelectCursorExtent.x; 5249 handles[3] = mSelectCursorExtent.y; 5250 } else { 5251 nativeSetTextSelection(mNativeClass, 0); 5252 } 5253 mWebViewCore.removeMessages(EventHub.SELECT_TEXT); 5254 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.SELECT_TEXT, handles); 5255 } 5256 5257 private void resetCaretTimer() { 5258 mPrivateHandler.removeMessages(CLEAR_CARET_HANDLE); 5259 if (!mSelectionStarted) { 5260 mPrivateHandler.sendEmptyMessageDelayed(CLEAR_CARET_HANDLE, 5261 CARET_HANDLE_STAMINA_MS); 5262 } 5263 } 5264 5265 /** 5266 * See {@link WebView#emulateShiftHeld()} 5267 */ 5268 @Override 5269 @Deprecated 5270 public void emulateShiftHeld() { 5271 } 5272 5273 /** 5274 * Select all of the text in this WebView. 5275 * 5276 * This is an implementation detail. 5277 */ 5278 public void selectAll() { 5279 mWebViewCore.sendMessage(EventHub.SELECT_ALL); 5280 } 5281 5282 /** 5283 * Called when the selection has been removed. 5284 */ 5285 void selectionDone() { 5286 if (mSelectingText) { 5287 hidePasteButton(); 5288 endSelectingText(); 5289 // finish is idempotent, so this is fine even if selectionDone was 5290 // called by mSelectCallback.onDestroyActionMode 5291 if (mSelectCallback != null) { 5292 mSelectCallback.finish(); 5293 mSelectCallback = null; 5294 } 5295 invalidate(); // redraw without selection 5296 mAutoScrollX = 0; 5297 mAutoScrollY = 0; 5298 mSentAutoScrollMessage = false; 5299 } 5300 } 5301 5302 /** 5303 * Copy the selection to the clipboard 5304 * 5305 * This is an implementation detail. 5306 */ 5307 public boolean copySelection() { 5308 boolean copiedSomething = false; 5309 String selection = getSelection(); 5310 if (selection != null && selection != "") { 5311 if (DebugFlags.WEB_VIEW) { 5312 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5313 } 5314 Toast.makeText(mContext 5315 , com.android.internal.R.string.text_copied 5316 , Toast.LENGTH_SHORT).show(); 5317 copiedSomething = true; 5318 ClipboardManager cm = (ClipboardManager)mContext 5319 .getSystemService(Context.CLIPBOARD_SERVICE); 5320 cm.setText(selection); 5321 int[] handles = new int[4]; 5322 getSelectionHandles(handles); 5323 mWebViewCore.sendMessage(EventHub.COPY_TEXT, handles); 5324 } 5325 invalidate(); // remove selection region and pointer 5326 return copiedSomething; 5327 } 5328 5329 /** 5330 * Cut the selected text into the clipboard 5331 * 5332 * This is an implementation detail 5333 */ 5334 public void cutSelection() { 5335 copySelection(); 5336 int[] handles = new int[4]; 5337 getSelectionHandles(handles); 5338 mWebViewCore.sendMessage(EventHub.DELETE_TEXT, handles); 5339 } 5340 5341 /** 5342 * Paste text from the clipboard to the cursor position. 5343 * 5344 * This is an implementation detail 5345 */ 5346 public void pasteFromClipboard() { 5347 ClipboardManager cm = (ClipboardManager)mContext 5348 .getSystemService(Context.CLIPBOARD_SERVICE); 5349 ClipData clipData = cm.getPrimaryClip(); 5350 if (clipData != null) { 5351 ClipData.Item clipItem = clipData.getItemAt(0); 5352 CharSequence pasteText = clipItem.getText(); 5353 if (mInputConnection != null) { 5354 mInputConnection.replaceSelection(pasteText); 5355 } 5356 } 5357 } 5358 5359 /** 5360 * This is an implementation detail. 5361 */ 5362 public SearchBox getSearchBox() { 5363 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5364 return null; 5365 } 5366 return mWebViewCore.getBrowserFrame().getSearchBox(); 5367 } 5368 5369 /** 5370 * Returns the currently highlighted text as a string. 5371 */ 5372 String getSelection() { 5373 if (mNativeClass == 0) return ""; 5374 return nativeGetSelection(); 5375 } 5376 5377 @Override 5378 public void onAttachedToWindow() { 5379 if (mWebView.hasWindowFocus()) setActive(true); 5380 5381 addAccessibilityApisToJavaScript(); 5382 5383 updateHwAccelerated(); 5384 } 5385 5386 @Override 5387 public void onDetachedFromWindow() { 5388 clearHelpers(); 5389 mZoomManager.dismissZoomPicker(); 5390 if (mWebView.hasWindowFocus()) setActive(false); 5391 5392 removeAccessibilityApisFromJavaScript(); 5393 updateHwAccelerated(); 5394 5395 if (mWebView.isHardwareAccelerated()) { 5396 int drawGLFunction = nativeGetDrawGLFunction(mNativeClass); 5397 ViewRootImpl viewRoot = mWebView.getViewRootImpl(); 5398 if (drawGLFunction != 0 && viewRoot != null) { 5399 viewRoot.detachFunctor(drawGLFunction); 5400 } 5401 } 5402 } 5403 5404 @Override 5405 public void onVisibilityChanged(View changedView, int visibility) { 5406 // The zoomManager may be null if the webview is created from XML that 5407 // specifies the view's visibility param as not visible (see http://b/2794841) 5408 if (visibility != View.VISIBLE && mZoomManager != null) { 5409 mZoomManager.dismissZoomPicker(); 5410 } 5411 updateDrawingState(); 5412 } 5413 5414 void setActive(boolean active) { 5415 if (active) { 5416 if (mWebView.hasFocus()) { 5417 // If our window regained focus, and we have focus, then begin 5418 // drawing the cursor ring 5419 mDrawCursorRing = true; 5420 setFocusControllerActive(true); 5421 } else { 5422 mDrawCursorRing = false; 5423 setFocusControllerActive(false); 5424 } 5425 } else { 5426 if (!mZoomManager.isZoomPickerVisible()) { 5427 /* 5428 * The external zoom controls come in their own window, so our 5429 * window loses focus. Our policy is to not draw the cursor ring 5430 * if our window is not focused, but this is an exception since 5431 * the user can still navigate the web page with the zoom 5432 * controls showing. 5433 */ 5434 mDrawCursorRing = false; 5435 } 5436 mKeysPressed.clear(); 5437 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5438 mTouchMode = TOUCH_DONE_MODE; 5439 setFocusControllerActive(false); 5440 } 5441 invalidate(); 5442 } 5443 5444 // To avoid drawing the cursor ring, and remove the TextView when our window 5445 // loses focus. 5446 @Override 5447 public void onWindowFocusChanged(boolean hasWindowFocus) { 5448 setActive(hasWindowFocus); 5449 if (hasWindowFocus) { 5450 JWebCoreJavaBridge.setActiveWebView(this); 5451 if (mPictureUpdatePausedForFocusChange) { 5452 WebViewCore.resumeUpdatePicture(mWebViewCore); 5453 mPictureUpdatePausedForFocusChange = false; 5454 } 5455 } else { 5456 JWebCoreJavaBridge.removeActiveWebView(this); 5457 final WebSettings settings = getSettings(); 5458 if (settings != null && settings.enableSmoothTransition() && 5459 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 5460 WebViewCore.pauseUpdatePicture(mWebViewCore); 5461 mPictureUpdatePausedForFocusChange = true; 5462 } 5463 } 5464 } 5465 5466 /* 5467 * Pass a message to WebCore Thread, telling the WebCore::Page's 5468 * FocusController to be "inactive" so that it will 5469 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5470 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5471 */ 5472 /* package */ void setFocusControllerActive(boolean active) { 5473 if (mWebViewCore == null) return; 5474 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5475 // Need to send this message after the document regains focus. 5476 if (active && mListBoxMessage != null) { 5477 mWebViewCore.sendMessage(mListBoxMessage); 5478 mListBoxMessage = null; 5479 } 5480 } 5481 5482 @Override 5483 public void onFocusChanged(boolean focused, int direction, 5484 Rect previouslyFocusedRect) { 5485 if (DebugFlags.WEB_VIEW) { 5486 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5487 } 5488 if (focused) { 5489 mDrawCursorRing = true; 5490 setFocusControllerActive(true); 5491 } else { 5492 mDrawCursorRing = false; 5493 setFocusControllerActive(false); 5494 mKeysPressed.clear(); 5495 } 5496 if (!mTouchHighlightRegion.isEmpty()) { 5497 mWebView.invalidate(mTouchHighlightRegion.getBounds()); 5498 } 5499 } 5500 5501 // updateRectsForGL() happens almost every draw call, in order to avoid creating 5502 // any object in this code path, we move the local variable out to be a private 5503 // final member, and we marked them as mTemp*. 5504 private final Point mTempVisibleRectOffset = new Point(); 5505 private final Rect mTempVisibleRect = new Rect(); 5506 5507 void updateRectsForGL() { 5508 // Use the getGlobalVisibleRect() to get the intersection among the parents 5509 // visible == false means we're clipped - send a null rect down to indicate that 5510 // we should not draw 5511 boolean visible = mWebView.getGlobalVisibleRect(mTempVisibleRect, mTempVisibleRectOffset); 5512 mInvScreenRect.set(mTempVisibleRect); 5513 if (visible) { 5514 // Then need to invert the Y axis, just for GL 5515 View rootView = mWebView.getRootView(); 5516 int rootViewHeight = rootView.getHeight(); 5517 mScreenRect.set(mInvScreenRect); 5518 int savedWebViewBottom = mInvScreenRect.bottom; 5519 mInvScreenRect.bottom = rootViewHeight - mInvScreenRect.top - getVisibleTitleHeightImpl(); 5520 mInvScreenRect.top = rootViewHeight - savedWebViewBottom; 5521 mIsWebViewVisible = true; 5522 } else { 5523 mIsWebViewVisible = false; 5524 } 5525 5526 mTempVisibleRect.offset(-mTempVisibleRectOffset.x, -mTempVisibleRectOffset.y); 5527 viewToContentVisibleRect(mVisibleContentRect, mTempVisibleRect); 5528 5529 nativeUpdateDrawGLFunction(mNativeClass, mIsWebViewVisible ? mInvScreenRect : null, 5530 mIsWebViewVisible ? mScreenRect : null, 5531 mVisibleContentRect, getScale()); 5532 } 5533 5534 // Input : viewRect, rect in view/screen coordinate. 5535 // Output: contentRect, rect in content/document coordinate. 5536 private void viewToContentVisibleRect(RectF contentRect, Rect viewRect) { 5537 contentRect.left = viewToContentXf(viewRect.left) / mWebView.getScaleX(); 5538 // viewToContentY will remove the total height of the title bar. Add 5539 // the visible height back in to account for the fact that if the title 5540 // bar is partially visible, the part of the visible rect which is 5541 // displaying our content is displaced by that amount. 5542 contentRect.top = viewToContentYf(viewRect.top + getVisibleTitleHeightImpl()) 5543 / mWebView.getScaleY(); 5544 contentRect.right = viewToContentXf(viewRect.right) / mWebView.getScaleX(); 5545 contentRect.bottom = viewToContentYf(viewRect.bottom) / mWebView.getScaleY(); 5546 } 5547 5548 @Override 5549 public boolean setFrame(int left, int top, int right, int bottom) { 5550 boolean changed = mWebViewPrivate.super_setFrame(left, top, right, bottom); 5551 if (!changed && mHeightCanMeasure) { 5552 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5553 // in WebViewCore after we get the first layout. We do call 5554 // requestLayout() when we get contentSizeChanged(). But the View 5555 // system won't call onSizeChanged if the dimension is not changed. 5556 // In this case, we need to call sendViewSizeZoom() explicitly to 5557 // notify the WebKit about the new dimensions. 5558 sendViewSizeZoom(false); 5559 } 5560 updateRectsForGL(); 5561 return changed; 5562 } 5563 5564 @Override 5565 public void onSizeChanged(int w, int h, int ow, int oh) { 5566 // adjust the max viewport width depending on the view dimensions. This 5567 // is to ensure the scaling is not going insane. So do not shrink it if 5568 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5569 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5570 if (newMaxViewportWidth > sMaxViewportWidth) { 5571 sMaxViewportWidth = newMaxViewportWidth; 5572 } 5573 5574 mZoomManager.onSizeChanged(w, h, ow, oh); 5575 5576 if (mLoadedPicture != null && mDelaySetPicture == null) { 5577 // Size changes normally result in a new picture 5578 // Re-set the loaded picture to simulate that 5579 // However, do not update the base layer as that hasn't changed 5580 setNewPicture(mLoadedPicture, false); 5581 } 5582 if (mIsEditingText) { 5583 scrollEditIntoView(); 5584 } 5585 relocateAutoCompletePopup(); 5586 } 5587 5588 /** 5589 * Scrolls the edit field into view using the minimum scrolling necessary. 5590 * If the edit field is too large to fit in the visible window, the caret 5591 * dimensions are used so that at least the caret is visible. 5592 * A buffer of EDIT_RECT_BUFFER in view pixels is used to offset the 5593 * edit rectangle to ensure a margin with the edge of the screen. 5594 */ 5595 private void scrollEditIntoView() { 5596 Rect visibleRect = new Rect(viewToContentX(getScrollX()), 5597 viewToContentY(getScrollY()), 5598 viewToContentX(getScrollX() + getWidth()), 5599 viewToContentY(getScrollY() + getViewHeightWithTitle())); 5600 if (visibleRect.contains(mEditTextContentBounds)) { 5601 return; // no need to scroll 5602 } 5603 syncSelectionCursors(); 5604 final int buffer = Math.max(1, viewToContentDimension(EDIT_RECT_BUFFER)); 5605 Rect showRect = new Rect( 5606 Math.max(0, mEditTextContentBounds.left - buffer), 5607 Math.max(0, mEditTextContentBounds.top - buffer), 5608 mEditTextContentBounds.right + buffer, 5609 mEditTextContentBounds.bottom + buffer); 5610 Point caretTop = calculateCaretTop(); 5611 if (visibleRect.width() < mEditTextContentBounds.width()) { 5612 // The whole edit won't fit in the width, so use the caret rect 5613 if (mSelectCursorBase.x < caretTop.x) { 5614 showRect.left = Math.max(0, mSelectCursorBase.x - buffer); 5615 showRect.right = caretTop.x + buffer; 5616 } else { 5617 showRect.left = Math.max(0, caretTop.x - buffer); 5618 showRect.right = mSelectCursorBase.x + buffer; 5619 } 5620 } 5621 if (visibleRect.height() < mEditTextContentBounds.height()) { 5622 // The whole edit won't fit in the height, so use the caret rect 5623 if (mSelectCursorBase.y > caretTop.y) { 5624 showRect.top = Math.max(0, caretTop.y - buffer); 5625 showRect.bottom = mSelectCursorBase.y + buffer; 5626 } else { 5627 showRect.top = Math.max(0, mSelectCursorBase.y - buffer); 5628 showRect.bottom = caretTop.y + buffer; 5629 } 5630 } 5631 5632 if (visibleRect.contains(showRect)) { 5633 return; // no need to scroll 5634 } 5635 5636 int scrollX = visibleRect.left; 5637 if (visibleRect.left > showRect.left) { 5638 scrollX = showRect.left; 5639 } else if (visibleRect.right < showRect.right) { 5640 scrollX = Math.max(0, showRect.right - visibleRect.width()); 5641 } 5642 int scrollY = visibleRect.top; 5643 if (visibleRect.top > showRect.top) { 5644 scrollY = showRect.top; 5645 } else if (visibleRect.bottom < showRect.bottom) { 5646 scrollY = Math.max(0, showRect.bottom - visibleRect.height()); 5647 } 5648 5649 contentScrollTo(scrollX, scrollY, false); 5650 } 5651 5652 @Override 5653 public void onScrollChanged(int l, int t, int oldl, int oldt) { 5654 if (!mInOverScrollMode) { 5655 sendOurVisibleRect(); 5656 // update WebKit if visible title bar height changed. The logic is same 5657 // as getVisibleTitleHeightImpl. 5658 int titleHeight = getTitleHeight(); 5659 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5660 sendViewSizeZoom(false); 5661 } 5662 } 5663 } 5664 5665 @Override 5666 public boolean dispatchKeyEvent(KeyEvent event) { 5667 switch (event.getAction()) { 5668 case KeyEvent.ACTION_DOWN: 5669 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5670 break; 5671 case KeyEvent.ACTION_MULTIPLE: 5672 // Always accept the action. 5673 break; 5674 case KeyEvent.ACTION_UP: 5675 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5676 if (location == -1) { 5677 // We did not receive the key down for this key, so do not 5678 // handle the key up. 5679 return false; 5680 } else { 5681 // We did receive the key down. Handle the key up, and 5682 // remove it from our pressed keys. 5683 mKeysPressed.remove(location); 5684 } 5685 break; 5686 default: 5687 // Accept the action. This should not happen, unless a new 5688 // action is added to KeyEvent. 5689 break; 5690 } 5691 return mWebViewPrivate.super_dispatchKeyEvent(event); 5692 } 5693 5694 /* 5695 * Here is the snap align logic: 5696 * 1. If it starts nearly horizontally or vertically, snap align; 5697 * 2. If there is a dramitic direction change, let it go; 5698 * 5699 * Adjustable parameters. Angle is the radians on a unit circle, limited 5700 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 5701 */ 5702 private static final float HSLOPE_TO_START_SNAP = .25f; 5703 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 5704 private static final float VSLOPE_TO_START_SNAP = 1.25f; 5705 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 5706 /* 5707 * These values are used to influence the average angle when entering 5708 * snap mode. If is is the first movement entering snap, we set the average 5709 * to the appropriate ideal. If the user is entering into snap after the 5710 * first movement, then we average the average angle with these values. 5711 */ 5712 private static final float ANGLE_VERT = 2f; 5713 private static final float ANGLE_HORIZ = 0f; 5714 /* 5715 * The modified moving average weight. 5716 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 5717 */ 5718 private static final float MMA_WEIGHT_N = 5; 5719 5720 private boolean inFullScreenMode() { 5721 return mFullScreenHolder != null; 5722 } 5723 5724 private void dismissFullScreenMode() { 5725 if (inFullScreenMode()) { 5726 mFullScreenHolder.hide(); 5727 mFullScreenHolder = null; 5728 invalidate(); 5729 } 5730 } 5731 5732 void onPinchToZoomAnimationStart() { 5733 // cancel the single touch handling 5734 cancelTouch(); 5735 onZoomAnimationStart(); 5736 } 5737 5738 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5739 onZoomAnimationEnd(); 5740 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5741 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5742 // as it may trigger the unwanted fling. 5743 mTouchMode = TOUCH_PINCH_DRAG; 5744 mConfirmMove = true; 5745 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5746 } 5747 5748 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5749 // layer is found. 5750 private void startScrollingLayer(float x, float y) { 5751 if (mNativeClass == 0) 5752 return; 5753 5754 int contentX = viewToContentX((int) x + getScrollX()); 5755 int contentY = viewToContentY((int) y + getScrollY()); 5756 mCurrentScrollingLayerId = nativeScrollableLayer(mNativeClass, 5757 contentX, contentY, mScrollingLayerRect, mScrollingLayerBounds); 5758 if (mCurrentScrollingLayerId != 0) { 5759 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5760 } 5761 } 5762 5763 // 1/(density * density) used to compute the distance between points. 5764 // Computed in init(). 5765 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5766 5767 // The distance between two points reported in onTouchEvent scaled by the 5768 // density of the screen. 5769 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5770 5771 @Override 5772 public boolean onHoverEvent(MotionEvent event) { 5773 if (mNativeClass == 0) { 5774 return false; 5775 } 5776 int x = viewToContentX((int) event.getX() + getScrollX()); 5777 int y = viewToContentY((int) event.getY() + getScrollY()); 5778 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, x, y); 5779 return true; 5780 } 5781 5782 @Override 5783 public boolean onTouchEvent(MotionEvent ev) { 5784 if (mNativeClass == 0 || (!mWebView.isClickable() && !mWebView.isLongClickable())) { 5785 return false; 5786 } 5787 5788 if (!mWebView.isFocused()) { 5789 mWebView.requestFocus(); 5790 } 5791 5792 if (mInputDispatcher == null) { 5793 return false; 5794 } 5795 5796 if (mInputDispatcher.postPointerEvent(ev, getScrollX(), 5797 getScrollY() - getTitleHeight(), mZoomManager.getInvScale())) { 5798 mInputDispatcher.dispatchUiEvents(); 5799 return true; 5800 } else { 5801 Log.w(LOGTAG, "mInputDispatcher rejected the event!"); 5802 return false; 5803 } 5804 } 5805 5806 private float calculateDragAngle(int dx, int dy) { 5807 dx = Math.abs(dx); 5808 dy = Math.abs(dy); 5809 return (float) Math.atan2(dy, dx); 5810 } 5811 5812 /* 5813 * Common code for single touch and multi-touch. 5814 * (x, y) denotes current focus point, which is the touch point for single touch 5815 * and the middle point for multi-touch. 5816 */ 5817 private void handleTouchEventCommon(MotionEvent event, int action, int x, int y) { 5818 ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 5819 5820 long eventTime = event.getEventTime(); 5821 5822 // Due to the touch screen edge effect, a touch closer to the edge 5823 // always snapped to the edge. As getViewWidth() can be different from 5824 // getWidth() due to the scrollbar, adjusting the point to match 5825 // getViewWidth(). Same applied to the height. 5826 x = Math.min(x, getViewWidth() - 1); 5827 y = Math.min(y, getViewHeightWithTitle() - 1); 5828 5829 int deltaX = mLastTouchX - x; 5830 int deltaY = mLastTouchY - y; 5831 int contentX = viewToContentX(x + getScrollX()); 5832 int contentY = viewToContentY(y + getScrollY()); 5833 5834 switch (action) { 5835 case MotionEvent.ACTION_DOWN: { 5836 mConfirmMove = false; 5837 mInitialHitTestResult = null; 5838 if (!mEditTextScroller.isFinished()) { 5839 mEditTextScroller.abortAnimation(); 5840 } 5841 if (!mScroller.isFinished()) { 5842 // stop the current scroll animation, but if this is 5843 // the start of a fling, allow it to add to the current 5844 // fling's velocity 5845 mScroller.abortAnimation(); 5846 mTouchMode = TOUCH_DRAG_START_MODE; 5847 mConfirmMove = true; 5848 nativeSetIsScrolling(false); 5849 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5850 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5851 removeTouchHighlight(); 5852 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5853 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5854 } else { 5855 mTouchMode = TOUCH_INIT_MODE; 5856 } 5857 } else { // the normal case 5858 mTouchMode = TOUCH_INIT_MODE; 5859 // TODO: Have WebViewInputDispatch handle this 5860 TouchHighlightData data = new TouchHighlightData(); 5861 data.mX = contentX; 5862 data.mY = contentY; 5863 data.mNativeLayerRect = new Rect(); 5864 if (mNativeClass != 0) { 5865 data.mNativeLayer = nativeScrollableLayer(mNativeClass, 5866 contentX, contentY, data.mNativeLayerRect, null); 5867 } else { 5868 data.mNativeLayer = 0; 5869 } 5870 data.mSlop = viewToContentDimension(mNavSlop); 5871 removeTouchHighlight(); 5872 if (!mBlockWebkitViewMessages && mWebViewCore != null) { 5873 mWebViewCore.sendMessageAtFrontOfQueue( 5874 EventHub.HIT_TEST, data); 5875 } 5876 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5877 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5878 (eventTime - mLastTouchUpTime), eventTime); 5879 } 5880 mSelectionStarted = false; 5881 if (mSelectingText) { 5882 ensureSelectionHandles(); 5883 int shiftedY = y - getTitleHeight() + getScrollY(); 5884 int shiftedX = x + getScrollX(); 5885 if (mSelectHandleCenter != null && mSelectHandleCenter.getBounds() 5886 .contains(shiftedX, shiftedY)) { 5887 mSelectionStarted = true; 5888 mSelectDraggingCursor = mSelectCursorBase; 5889 mSelectDraggingOffset = mSelectHandleCenterOffset; 5890 mSelectDraggingTextQuad = mSelectCursorBaseTextQuad; 5891 mPrivateHandler.removeMessages(CLEAR_CARET_HANDLE); 5892 hidePasteButton(); 5893 } else if (mSelectHandleLeft != null 5894 && mSelectHandleLeft.getBounds() 5895 .contains(shiftedX, shiftedY)) { 5896 mSelectionStarted = true; 5897 mSelectDraggingCursor = mSelectCursorBase; 5898 mSelectDraggingOffset = mSelectHandleLeftOffset; 5899 mSelectDraggingTextQuad = mSelectCursorBaseTextQuad; 5900 } else if (mSelectHandleRight != null 5901 && mSelectHandleRight.getBounds() 5902 .contains(shiftedX, shiftedY)) { 5903 mSelectionStarted = true; 5904 mSelectDraggingCursor = mSelectCursorExtent; 5905 mSelectDraggingOffset = mSelectHandleRightOffset; 5906 mSelectDraggingTextQuad = mSelectCursorExtentTextQuad; 5907 } else if (mIsCaretSelection) { 5908 selectionDone(); 5909 } 5910 if (DebugFlags.WEB_VIEW) { 5911 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5912 } 5913 } 5914 } 5915 // Trigger the link 5916 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 5917 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 5918 mPrivateHandler.sendEmptyMessageDelayed( 5919 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5920 mPrivateHandler.sendEmptyMessageDelayed( 5921 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5922 } 5923 startTouch(x, y, eventTime); 5924 if (mIsEditingText) { 5925 mTouchInEditText = mEditTextContentBounds 5926 .contains(contentX, contentY); 5927 } 5928 break; 5929 } 5930 case MotionEvent.ACTION_MOVE: { 5931 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5932 >= mTouchSlopSquare) { 5933 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5934 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5935 mConfirmMove = true; 5936 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5937 mTouchMode = TOUCH_INIT_MODE; 5938 } 5939 removeTouchHighlight(); 5940 } 5941 if (mSelectingText && mSelectionStarted) { 5942 if (DebugFlags.WEB_VIEW) { 5943 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5944 } 5945 ViewParent parent = mWebView.getParent(); 5946 if (parent != null) { 5947 parent.requestDisallowInterceptTouchEvent(true); 5948 } 5949 if (deltaX != 0 || deltaY != 0) { 5950 int handleX = contentX + 5951 viewToContentDimension(mSelectDraggingOffset.x); 5952 int handleY = contentY + 5953 viewToContentDimension(mSelectDraggingOffset.y); 5954 mSelectDraggingCursor.set(handleX, handleY); 5955 boolean inCursorText = 5956 mSelectDraggingTextQuad.containsPoint(handleX, handleY); 5957 boolean inEditBounds = mEditTextContentBounds 5958 .contains(handleX, handleY); 5959 if (mIsEditingText && !inEditBounds) { 5960 beginScrollEdit(); 5961 } else { 5962 endScrollEdit(); 5963 } 5964 if (inCursorText || (mIsEditingText && !inEditBounds)) { 5965 snapDraggingCursor(); 5966 } 5967 updateWebkitSelection(); 5968 if (!inCursorText && mIsEditingText && inEditBounds) { 5969 // Visually snap even if we have moved the handle. 5970 snapDraggingCursor(); 5971 } 5972 mLastTouchX = x; 5973 mLastTouchY = y; 5974 invalidate(); 5975 } 5976 break; 5977 } 5978 5979 if (mTouchMode == TOUCH_DONE_MODE) { 5980 // no dragging during scroll zoom animation, or when prevent 5981 // default is yes 5982 break; 5983 } 5984 if (mVelocityTracker == null) { 5985 Log.e(LOGTAG, "Got null mVelocityTracker when " 5986 + " mTouchMode = " + mTouchMode); 5987 } else { 5988 mVelocityTracker.addMovement(event); 5989 } 5990 5991 if (mTouchMode != TOUCH_DRAG_MODE && 5992 mTouchMode != TOUCH_DRAG_LAYER_MODE && 5993 mTouchMode != TOUCH_DRAG_TEXT_MODE) { 5994 5995 if (!mConfirmMove) { 5996 break; 5997 } 5998 5999 // Only lock dragging to one axis if we don't have a scale in progress. 6000 // Scaling implies free-roaming movement. Note this is only ever a question 6001 // if mZoomManager.supportsPanDuringZoom() is true. 6002 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6003 if (detector == null || !detector.isInProgress()) { 6004 // if it starts nearly horizontal or vertical, enforce it 6005 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6006 mSnapScrollMode = SNAP_X; 6007 mSnapPositive = deltaX > 0; 6008 mAverageAngle = ANGLE_HORIZ; 6009 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6010 mSnapScrollMode = SNAP_Y; 6011 mSnapPositive = deltaY > 0; 6012 mAverageAngle = ANGLE_VERT; 6013 } 6014 } 6015 6016 mTouchMode = TOUCH_DRAG_MODE; 6017 mLastTouchX = x; 6018 mLastTouchY = y; 6019 deltaX = 0; 6020 deltaY = 0; 6021 6022 startScrollingLayer(x, y); 6023 startDrag(); 6024 } 6025 6026 // do pan 6027 boolean keepScrollBarsVisible = false; 6028 if (deltaX == 0 && deltaY == 0) { 6029 keepScrollBarsVisible = true; 6030 } else { 6031 mAverageAngle += 6032 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6033 / MMA_WEIGHT_N; 6034 if (mSnapScrollMode != SNAP_NONE) { 6035 if (mSnapScrollMode == SNAP_Y) { 6036 // radical change means getting out of snap mode 6037 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6038 mSnapScrollMode = SNAP_NONE; 6039 } 6040 } 6041 if (mSnapScrollMode == SNAP_X) { 6042 // radical change means getting out of snap mode 6043 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6044 mSnapScrollMode = SNAP_NONE; 6045 } 6046 } 6047 } else { 6048 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6049 mSnapScrollMode = SNAP_X; 6050 mSnapPositive = deltaX > 0; 6051 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6052 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6053 mSnapScrollMode = SNAP_Y; 6054 mSnapPositive = deltaY > 0; 6055 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6056 } 6057 } 6058 if (mSnapScrollMode != SNAP_NONE) { 6059 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6060 deltaY = 0; 6061 } else { 6062 deltaX = 0; 6063 } 6064 } 6065 if (deltaX * deltaX + deltaY * deltaY > mTouchSlopSquare) { 6066 mHeldMotionless = MOTIONLESS_FALSE; 6067 } else { 6068 mHeldMotionless = MOTIONLESS_TRUE; 6069 keepScrollBarsVisible = true; 6070 } 6071 6072 mLastTouchTime = eventTime; 6073 boolean allDrag = doDrag(deltaX, deltaY); 6074 if (allDrag) { 6075 mLastTouchX = x; 6076 mLastTouchY = y; 6077 } else { 6078 int contentDeltaX = (int)Math.floor(deltaX * mZoomManager.getInvScale()); 6079 int roundedDeltaX = contentToViewDimension(contentDeltaX); 6080 int contentDeltaY = (int)Math.floor(deltaY * mZoomManager.getInvScale()); 6081 int roundedDeltaY = contentToViewDimension(contentDeltaY); 6082 mLastTouchX -= roundedDeltaX; 6083 mLastTouchY -= roundedDeltaY; 6084 } 6085 } 6086 6087 // Turn off scrollbars when dragging a layer. 6088 if (keepScrollBarsVisible && 6089 mTouchMode != TOUCH_DRAG_LAYER_MODE && 6090 mTouchMode != TOUCH_DRAG_TEXT_MODE) { 6091 if (mHeldMotionless != MOTIONLESS_TRUE) { 6092 mHeldMotionless = MOTIONLESS_TRUE; 6093 invalidate(); 6094 } 6095 // keep the scrollbar on the screen even there is no scroll 6096 mWebViewPrivate.awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6097 false); 6098 // Post a message so that we'll keep them alive while we're not scrolling. 6099 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6100 .obtainMessage(AWAKEN_SCROLL_BARS), 6101 ViewConfiguration.getScrollDefaultDelay()); 6102 // return false to indicate that we can't pan out of the 6103 // view space 6104 return; 6105 } else { 6106 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6107 } 6108 break; 6109 } 6110 case MotionEvent.ACTION_UP: { 6111 endScrollEdit(); 6112 if (!mConfirmMove && mIsEditingText && mSelectionStarted && 6113 mIsCaretSelection) { 6114 showPasteWindow(); 6115 stopTouch(); 6116 break; 6117 } 6118 mLastTouchUpTime = eventTime; 6119 if (mSentAutoScrollMessage) { 6120 mAutoScrollX = mAutoScrollY = 0; 6121 } 6122 switch (mTouchMode) { 6123 case TOUCH_DOUBLE_TAP_MODE: // double tap 6124 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6125 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6126 mTouchMode = TOUCH_DONE_MODE; 6127 break; 6128 case TOUCH_INIT_MODE: // tap 6129 case TOUCH_SHORTPRESS_START_MODE: 6130 case TOUCH_SHORTPRESS_MODE: 6131 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6132 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6133 if (!mConfirmMove) { 6134 if (mSelectingText) { 6135 // tapping on selection or controls does nothing 6136 if (!mSelectionStarted) { 6137 selectionDone(); 6138 } 6139 break; 6140 } 6141 // only trigger double tap if the WebView is 6142 // scalable 6143 if (mTouchMode == TOUCH_INIT_MODE 6144 && (canZoomIn() || canZoomOut())) { 6145 mPrivateHandler.sendEmptyMessageDelayed( 6146 RELEASE_SINGLE_TAP, ViewConfiguration 6147 .getDoubleTapTimeout()); 6148 } 6149 break; 6150 } 6151 case TOUCH_DRAG_MODE: 6152 case TOUCH_DRAG_LAYER_MODE: 6153 case TOUCH_DRAG_TEXT_MODE: 6154 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6155 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6156 // if the user waits a while w/o moving before the 6157 // up, we don't want to do a fling 6158 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6159 if (mVelocityTracker == null) { 6160 Log.e(LOGTAG, "Got null mVelocityTracker"); 6161 } else { 6162 mVelocityTracker.addMovement(event); 6163 } 6164 // set to MOTIONLESS_IGNORE so that it won't keep 6165 // removing and sending message in 6166 // drawCoreAndCursorRing() 6167 mHeldMotionless = MOTIONLESS_IGNORE; 6168 doFling(); 6169 break; 6170 } else { 6171 if (mScroller.springBack(getScrollX(), getScrollY(), 0, 6172 computeMaxScrollX(), 0, 6173 computeMaxScrollY())) { 6174 invalidate(); 6175 } 6176 } 6177 // redraw in high-quality, as we're done dragging 6178 mHeldMotionless = MOTIONLESS_TRUE; 6179 invalidate(); 6180 // fall through 6181 case TOUCH_DRAG_START_MODE: 6182 // TOUCH_DRAG_START_MODE should not happen for the real 6183 // device as we almost certain will get a MOVE. But this 6184 // is possible on emulator. 6185 mLastVelocity = 0; 6186 WebViewCore.resumePriority(); 6187 if (!mSelectingText) { 6188 WebViewCore.resumeUpdatePicture(mWebViewCore); 6189 } 6190 break; 6191 } 6192 stopTouch(); 6193 break; 6194 } 6195 case MotionEvent.ACTION_CANCEL: { 6196 if (mTouchMode == TOUCH_DRAG_MODE) { 6197 mScroller.springBack(getScrollX(), getScrollY(), 0, 6198 computeMaxScrollX(), 0, computeMaxScrollY()); 6199 invalidate(); 6200 } 6201 cancelTouch(); 6202 break; 6203 } 6204 } 6205 } 6206 6207 /** 6208 * Returns the text scroll speed in content pixels per millisecond based on 6209 * the touch location. 6210 * @param coordinate The x or y touch coordinate in content space 6211 * @param min The minimum coordinate (x or y) of the edit content bounds 6212 * @param max The maximum coordinate (x or y) of the edit content bounds 6213 */ 6214 private static float getTextScrollSpeed(int coordinate, int min, int max) { 6215 if (coordinate < min) { 6216 return (coordinate - min) * TEXT_SCROLL_RATE; 6217 } else if (coordinate >= max) { 6218 return (coordinate - max + 1) * TEXT_SCROLL_RATE; 6219 } else { 6220 return 0.0f; 6221 } 6222 } 6223 6224 private void beginScrollEdit() { 6225 if (mLastEditScroll == 0) { 6226 mLastEditScroll = SystemClock.uptimeMillis() - 6227 TEXT_SCROLL_FIRST_SCROLL_MS; 6228 scrollEditWithCursor(); 6229 } 6230 } 6231 6232 private void endScrollEdit() { 6233 mLastEditScroll = 0; 6234 } 6235 6236 private static int getTextScrollDelta(float speed, long deltaT) { 6237 float distance = speed * deltaT; 6238 int intDistance = (int)Math.floor(distance); 6239 float probability = distance - intDistance; 6240 if (Math.random() < probability) { 6241 intDistance++; 6242 } 6243 return intDistance; 6244 } 6245 /** 6246 * Scrolls edit text a distance based on the last touch point, 6247 * the last scroll time, and the edit text content bounds. 6248 */ 6249 private void scrollEditWithCursor() { 6250 if (mLastEditScroll != 0) { 6251 int x = viewToContentX(mLastTouchX + getScrollX() + mSelectDraggingOffset.x); 6252 float scrollSpeedX = getTextScrollSpeed(x, mEditTextContentBounds.left, 6253 mEditTextContentBounds.right); 6254 int y = viewToContentY(mLastTouchY + getScrollY() + mSelectDraggingOffset.y); 6255 float scrollSpeedY = getTextScrollSpeed(y, mEditTextContentBounds.top, 6256 mEditTextContentBounds.bottom); 6257 if (scrollSpeedX == 0.0f && scrollSpeedY == 0.0f) { 6258 endScrollEdit(); 6259 } else { 6260 long currentTime = SystemClock.uptimeMillis(); 6261 long timeSinceLastUpdate = currentTime - mLastEditScroll; 6262 int deltaX = getTextScrollDelta(scrollSpeedX, timeSinceLastUpdate); 6263 int deltaY = getTextScrollDelta(scrollSpeedY, timeSinceLastUpdate); 6264 mLastEditScroll = currentTime; 6265 if (deltaX == 0 && deltaY == 0) { 6266 // By probability no text scroll this time. Try again later. 6267 mPrivateHandler.sendEmptyMessageDelayed(SCROLL_EDIT_TEXT, 6268 TEXT_SCROLL_FIRST_SCROLL_MS); 6269 } else { 6270 int scrollX = getTextScrollX() + deltaX; 6271 scrollX = Math.min(getMaxTextScrollX(), scrollX); 6272 scrollX = Math.max(0, scrollX); 6273 int scrollY = getTextScrollY() + deltaY; 6274 scrollY = Math.min(getMaxTextScrollY(), scrollY); 6275 scrollY = Math.max(0, scrollY); 6276 scrollEditText(scrollX, scrollY); 6277 int cursorX = mSelectDraggingCursor.x; 6278 int cursorY = mSelectDraggingCursor.y; 6279 mSelectDraggingCursor.set(x - deltaX, y - deltaY); 6280 updateWebkitSelection(); 6281 mSelectDraggingCursor.set(cursorX, cursorY); 6282 } 6283 } 6284 } 6285 } 6286 6287 private void startTouch(float x, float y, long eventTime) { 6288 // Remember where the motion event started 6289 mStartTouchX = mLastTouchX = Math.round(x); 6290 mStartTouchY = mLastTouchY = Math.round(y); 6291 mLastTouchTime = eventTime; 6292 mVelocityTracker = VelocityTracker.obtain(); 6293 mSnapScrollMode = SNAP_NONE; 6294 } 6295 6296 private void startDrag() { 6297 WebViewCore.reducePriority(); 6298 // to get better performance, pause updating the picture 6299 WebViewCore.pauseUpdatePicture(mWebViewCore); 6300 nativeSetIsScrolling(true); 6301 6302 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6303 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6304 mZoomManager.invokeZoomPicker(); 6305 } 6306 } 6307 6308 private boolean doDrag(int deltaX, int deltaY) { 6309 boolean allDrag = true; 6310 if ((deltaX | deltaY) != 0) { 6311 int oldX = getScrollX(); 6312 int oldY = getScrollY(); 6313 int rangeX = computeMaxScrollX(); 6314 int rangeY = computeMaxScrollY(); 6315 final int contentX = (int)Math.floor(deltaX * mZoomManager.getInvScale()); 6316 final int contentY = (int)Math.floor(deltaY * mZoomManager.getInvScale()); 6317 6318 // Assume page scrolling and change below if we're wrong 6319 mTouchMode = TOUCH_DRAG_MODE; 6320 6321 // Check special scrolling before going to main page scrolling. 6322 if (mIsEditingText && mTouchInEditText && canTextScroll(deltaX, deltaY)) { 6323 // Edit text scrolling 6324 oldX = getTextScrollX(); 6325 rangeX = getMaxTextScrollX(); 6326 deltaX = contentX; 6327 oldY = getTextScrollY(); 6328 rangeY = getMaxTextScrollY(); 6329 deltaY = contentY; 6330 mTouchMode = TOUCH_DRAG_TEXT_MODE; 6331 allDrag = false; 6332 } else if (mCurrentScrollingLayerId != 0) { 6333 // Check the scrolling bounds to see if we will actually do any 6334 // scrolling. The rectangle is in document coordinates. 6335 final int maxX = mScrollingLayerRect.right; 6336 final int maxY = mScrollingLayerRect.bottom; 6337 final int resultX = Math.max(0, 6338 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6339 final int resultY = Math.max(0, 6340 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6341 6342 if (resultX != mScrollingLayerRect.left || 6343 resultY != mScrollingLayerRect.top) { 6344 // In case we switched to dragging the page. 6345 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6346 deltaX = contentX; 6347 deltaY = contentY; 6348 oldX = mScrollingLayerRect.left; 6349 oldY = mScrollingLayerRect.top; 6350 rangeX = maxX; 6351 rangeY = maxY; 6352 allDrag = false; 6353 } 6354 } 6355 6356 if (mOverScrollGlow != null) { 6357 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6358 } 6359 6360 mWebViewPrivate.overScrollBy(deltaX, deltaY, oldX, oldY, 6361 rangeX, rangeY, 6362 mOverscrollDistance, mOverscrollDistance, true); 6363 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6364 invalidate(); 6365 } 6366 } 6367 mZoomManager.keepZoomPickerVisible(); 6368 return allDrag; 6369 } 6370 6371 private void stopTouch() { 6372 if (mScroller.isFinished() && !mSelectingText 6373 && (mTouchMode == TOUCH_DRAG_MODE 6374 || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 6375 WebViewCore.resumePriority(); 6376 WebViewCore.resumeUpdatePicture(mWebViewCore); 6377 nativeSetIsScrolling(false); 6378 } 6379 6380 // we also use mVelocityTracker == null to tell us that we are 6381 // not "moving around", so we can take the slower/prettier 6382 // mode in the drawing code 6383 if (mVelocityTracker != null) { 6384 mVelocityTracker.recycle(); 6385 mVelocityTracker = null; 6386 } 6387 6388 // Release any pulled glows 6389 if (mOverScrollGlow != null) { 6390 mOverScrollGlow.releaseAll(); 6391 } 6392 6393 if (mSelectingText) { 6394 mSelectionStarted = false; 6395 syncSelectionCursors(); 6396 if (mIsCaretSelection) { 6397 resetCaretTimer(); 6398 } 6399 invalidate(); 6400 } 6401 } 6402 6403 private void cancelTouch() { 6404 // we also use mVelocityTracker == null to tell us that we are 6405 // not "moving around", so we can take the slower/prettier 6406 // mode in the drawing code 6407 if (mVelocityTracker != null) { 6408 mVelocityTracker.recycle(); 6409 mVelocityTracker = null; 6410 } 6411 6412 if ((mTouchMode == TOUCH_DRAG_MODE 6413 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6414 WebViewCore.resumePriority(); 6415 WebViewCore.resumeUpdatePicture(mWebViewCore); 6416 nativeSetIsScrolling(false); 6417 } 6418 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6419 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6420 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6421 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6422 removeTouchHighlight(); 6423 mHeldMotionless = MOTIONLESS_TRUE; 6424 mTouchMode = TOUCH_DONE_MODE; 6425 } 6426 6427 private void snapDraggingCursor() { 6428 float scale = scaleAlongSegment( 6429 mSelectDraggingCursor.x, mSelectDraggingCursor.y, 6430 mSelectDraggingTextQuad.p4, mSelectDraggingTextQuad.p3); 6431 // clamp scale to ensure point is on the bottom segment 6432 scale = Math.max(0.0f, scale); 6433 scale = Math.min(scale, 1.0f); 6434 float newX = scaleCoordinate(scale, 6435 mSelectDraggingTextQuad.p4.x, mSelectDraggingTextQuad.p3.x); 6436 float newY = scaleCoordinate(scale, 6437 mSelectDraggingTextQuad.p4.y, mSelectDraggingTextQuad.p3.y); 6438 int x = Math.round(newX); 6439 int y = Math.round(newY); 6440 if (mIsEditingText) { 6441 x = Math.max(mEditTextContentBounds.left, 6442 Math.min(mEditTextContentBounds.right, x)); 6443 y = Math.max(mEditTextContentBounds.top, 6444 Math.min(mEditTextContentBounds.bottom, y)); 6445 } 6446 mSelectDraggingCursor.set(x, y); 6447 } 6448 6449 private static float scaleCoordinate(float scale, float coord1, float coord2) { 6450 float diff = coord2 - coord1; 6451 return coord1 + (scale * diff); 6452 } 6453 6454 @Override 6455 public boolean onGenericMotionEvent(MotionEvent event) { 6456 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6457 switch (event.getAction()) { 6458 case MotionEvent.ACTION_SCROLL: { 6459 final float vscroll; 6460 final float hscroll; 6461 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6462 vscroll = 0; 6463 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6464 } else { 6465 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6466 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6467 } 6468 if (hscroll != 0 || vscroll != 0) { 6469 final int vdelta = (int) (vscroll * 6470 mWebViewPrivate.getVerticalScrollFactor()); 6471 final int hdelta = (int) (hscroll * 6472 mWebViewPrivate.getHorizontalScrollFactor()); 6473 if (pinScrollBy(hdelta, vdelta, false, 0)) { 6474 return true; 6475 } 6476 } 6477 } 6478 } 6479 } 6480 return mWebViewPrivate.super_onGenericMotionEvent(event); 6481 } 6482 6483 private long mTrackballFirstTime = 0; 6484 private long mTrackballLastTime = 0; 6485 private float mTrackballRemainsX = 0.0f; 6486 private float mTrackballRemainsY = 0.0f; 6487 private int mTrackballXMove = 0; 6488 private int mTrackballYMove = 0; 6489 private boolean mSelectingText = false; 6490 private boolean mShowTextSelectionExtra = false; 6491 private boolean mSelectionStarted = false; 6492 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6493 private static final int TRACKBALL_TIMEOUT = 200; 6494 private static final int TRACKBALL_WAIT = 100; 6495 private static final int TRACKBALL_SCALE = 400; 6496 private static final int TRACKBALL_SCROLL_COUNT = 5; 6497 private static final int TRACKBALL_MOVE_COUNT = 10; 6498 private static final int TRACKBALL_MULTIPLIER = 3; 6499 private static final int SELECT_CURSOR_OFFSET = 16; 6500 private static final int SELECT_SCROLL = 5; 6501 private int mSelectX = 0; 6502 private int mSelectY = 0; 6503 private boolean mTrackballDown = false; 6504 private long mTrackballUpTime = 0; 6505 private long mLastCursorTime = 0; 6506 private Rect mLastCursorBounds; 6507 private SelectionHandleAlpha mHandleAlpha = new SelectionHandleAlpha(); 6508 private ObjectAnimator mHandleAlphaAnimator = 6509 ObjectAnimator.ofInt(mHandleAlpha, "alpha", 0); 6510 6511 // Set by default; BrowserActivity clears to interpret trackball data 6512 // directly for movement. Currently, the framework only passes 6513 // arrow key events, not trackball events, from one child to the next 6514 private boolean mMapTrackballToArrowKeys = true; 6515 6516 private DrawData mDelaySetPicture; 6517 private DrawData mLoadedPicture; 6518 6519 public void setMapTrackballToArrowKeys(boolean setMap) { 6520 mMapTrackballToArrowKeys = setMap; 6521 } 6522 6523 void resetTrackballTime() { 6524 mTrackballLastTime = 0; 6525 } 6526 6527 @Override 6528 public boolean onTrackballEvent(MotionEvent ev) { 6529 long time = ev.getEventTime(); 6530 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6531 if (ev.getY() > 0) pageDown(true); 6532 if (ev.getY() < 0) pageUp(true); 6533 return true; 6534 } 6535 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6536 if (mSelectingText) { 6537 return true; // discard press if copy in progress 6538 } 6539 mTrackballDown = true; 6540 if (mNativeClass == 0) { 6541 return false; 6542 } 6543 if (DebugFlags.WEB_VIEW) { 6544 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6545 + " time=" + time 6546 + " mLastCursorTime=" + mLastCursorTime); 6547 } 6548 if (mWebView.isInTouchMode()) mWebView.requestFocusFromTouch(); 6549 return false; // let common code in onKeyDown at it 6550 } 6551 if (ev.getAction() == MotionEvent.ACTION_UP) { 6552 // LONG_PRESS_CENTER is set in common onKeyDown 6553 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6554 mTrackballDown = false; 6555 mTrackballUpTime = time; 6556 if (mSelectingText) { 6557 copySelection(); 6558 selectionDone(); 6559 return true; // discard press if copy in progress 6560 } 6561 if (DebugFlags.WEB_VIEW) { 6562 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6563 + " time=" + time 6564 ); 6565 } 6566 return false; // let common code in onKeyUp at it 6567 } 6568 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6569 AccessibilityManager.getInstance(mContext).isEnabled()) { 6570 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6571 return false; 6572 } 6573 if (mTrackballDown) { 6574 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6575 return true; // discard move if trackball is down 6576 } 6577 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6578 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6579 return true; 6580 } 6581 // TODO: alternatively we can do panning as touch does 6582 switchOutDrawHistory(); 6583 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6584 if (DebugFlags.WEB_VIEW) { 6585 Log.v(LOGTAG, "onTrackballEvent time=" 6586 + time + " last=" + mTrackballLastTime); 6587 } 6588 mTrackballFirstTime = time; 6589 mTrackballXMove = mTrackballYMove = 0; 6590 } 6591 mTrackballLastTime = time; 6592 if (DebugFlags.WEB_VIEW) { 6593 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6594 } 6595 mTrackballRemainsX += ev.getX(); 6596 mTrackballRemainsY += ev.getY(); 6597 doTrackball(time, ev.getMetaState()); 6598 return true; 6599 } 6600 6601 private int scaleTrackballX(float xRate, int width) { 6602 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6603 int nextXMove = xMove; 6604 if (xMove > 0) { 6605 if (xMove > mTrackballXMove) { 6606 xMove -= mTrackballXMove; 6607 } 6608 } else if (xMove < mTrackballXMove) { 6609 xMove -= mTrackballXMove; 6610 } 6611 mTrackballXMove = nextXMove; 6612 return xMove; 6613 } 6614 6615 private int scaleTrackballY(float yRate, int height) { 6616 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6617 int nextYMove = yMove; 6618 if (yMove > 0) { 6619 if (yMove > mTrackballYMove) { 6620 yMove -= mTrackballYMove; 6621 } 6622 } else if (yMove < mTrackballYMove) { 6623 yMove -= mTrackballYMove; 6624 } 6625 mTrackballYMove = nextYMove; 6626 return yMove; 6627 } 6628 6629 private int keyCodeToSoundsEffect(int keyCode) { 6630 switch(keyCode) { 6631 case KeyEvent.KEYCODE_DPAD_UP: 6632 return SoundEffectConstants.NAVIGATION_UP; 6633 case KeyEvent.KEYCODE_DPAD_RIGHT: 6634 return SoundEffectConstants.NAVIGATION_RIGHT; 6635 case KeyEvent.KEYCODE_DPAD_DOWN: 6636 return SoundEffectConstants.NAVIGATION_DOWN; 6637 case KeyEvent.KEYCODE_DPAD_LEFT: 6638 return SoundEffectConstants.NAVIGATION_LEFT; 6639 } 6640 return 0; 6641 } 6642 6643 private void doTrackball(long time, int metaState) { 6644 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6645 if (elapsed == 0) { 6646 elapsed = TRACKBALL_TIMEOUT; 6647 } 6648 float xRate = mTrackballRemainsX * 1000 / elapsed; 6649 float yRate = mTrackballRemainsY * 1000 / elapsed; 6650 int viewWidth = getViewWidth(); 6651 int viewHeight = getViewHeight(); 6652 float ax = Math.abs(xRate); 6653 float ay = Math.abs(yRate); 6654 float maxA = Math.max(ax, ay); 6655 if (DebugFlags.WEB_VIEW) { 6656 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6657 + " xRate=" + xRate 6658 + " yRate=" + yRate 6659 + " mTrackballRemainsX=" + mTrackballRemainsX 6660 + " mTrackballRemainsY=" + mTrackballRemainsY); 6661 } 6662 int width = mContentWidth - viewWidth; 6663 int height = mContentHeight - viewHeight; 6664 if (width < 0) width = 0; 6665 if (height < 0) height = 0; 6666 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6667 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6668 maxA = Math.max(ax, ay); 6669 int count = Math.max(0, (int) maxA); 6670 int oldScrollX = getScrollX(); 6671 int oldScrollY = getScrollY(); 6672 if (count > 0) { 6673 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6674 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6675 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6676 KeyEvent.KEYCODE_DPAD_RIGHT; 6677 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6678 if (DebugFlags.WEB_VIEW) { 6679 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6680 + " count=" + count 6681 + " mTrackballRemainsX=" + mTrackballRemainsX 6682 + " mTrackballRemainsY=" + mTrackballRemainsY); 6683 } 6684 if (mNativeClass != 0) { 6685 for (int i = 0; i < count; i++) { 6686 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6687 } 6688 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6689 } 6690 mTrackballRemainsX = mTrackballRemainsY = 0; 6691 } 6692 if (count >= TRACKBALL_SCROLL_COUNT) { 6693 int xMove = scaleTrackballX(xRate, width); 6694 int yMove = scaleTrackballY(yRate, height); 6695 if (DebugFlags.WEB_VIEW) { 6696 Log.v(LOGTAG, "doTrackball pinScrollBy" 6697 + " count=" + count 6698 + " xMove=" + xMove + " yMove=" + yMove 6699 + " mScrollX-oldScrollX=" + (getScrollX()-oldScrollX) 6700 + " mScrollY-oldScrollY=" + (getScrollY()-oldScrollY) 6701 ); 6702 } 6703 if (Math.abs(getScrollX() - oldScrollX) > Math.abs(xMove)) { 6704 xMove = 0; 6705 } 6706 if (Math.abs(getScrollY() - oldScrollY) > Math.abs(yMove)) { 6707 yMove = 0; 6708 } 6709 if (xMove != 0 || yMove != 0) { 6710 pinScrollBy(xMove, yMove, true, 0); 6711 } 6712 } 6713 } 6714 6715 /** 6716 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6717 * @return Maximum horizontal scroll position within real content 6718 */ 6719 int computeMaxScrollX() { 6720 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6721 } 6722 6723 /** 6724 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6725 * @return Maximum vertical scroll position within real content 6726 */ 6727 int computeMaxScrollY() { 6728 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6729 - getViewHeightWithTitle(), 0); 6730 } 6731 6732 boolean updateScrollCoordinates(int x, int y) { 6733 int oldX = getScrollX(); 6734 int oldY = getScrollY(); 6735 setScrollXRaw(x); 6736 setScrollYRaw(y); 6737 if (oldX != getScrollX() || oldY != getScrollY()) { 6738 mWebViewPrivate.onScrollChanged(getScrollX(), getScrollY(), oldX, oldY); 6739 return true; 6740 } else { 6741 return false; 6742 } 6743 } 6744 6745 public void flingScroll(int vx, int vy) { 6746 mScroller.fling(getScrollX(), getScrollY(), vx, vy, 0, computeMaxScrollX(), 0, 6747 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6748 invalidate(); 6749 } 6750 6751 private void doFling() { 6752 if (mVelocityTracker == null) { 6753 return; 6754 } 6755 int maxX = computeMaxScrollX(); 6756 int maxY = computeMaxScrollY(); 6757 6758 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6759 int vx = (int) mVelocityTracker.getXVelocity(); 6760 int vy = (int) mVelocityTracker.getYVelocity(); 6761 6762 int scrollX = getScrollX(); 6763 int scrollY = getScrollY(); 6764 int overscrollDistance = mOverscrollDistance; 6765 int overflingDistance = mOverflingDistance; 6766 6767 // Use the layer's scroll data if applicable. 6768 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6769 scrollX = mScrollingLayerRect.left; 6770 scrollY = mScrollingLayerRect.top; 6771 maxX = mScrollingLayerRect.right; 6772 maxY = mScrollingLayerRect.bottom; 6773 // No overscrolling for layers. 6774 overscrollDistance = overflingDistance = 0; 6775 } else if (mTouchMode == TOUCH_DRAG_TEXT_MODE) { 6776 scrollX = getTextScrollX(); 6777 scrollY = getTextScrollY(); 6778 maxX = getMaxTextScrollX(); 6779 maxY = getMaxTextScrollY(); 6780 // No overscrolling for edit text. 6781 overscrollDistance = overflingDistance = 0; 6782 } 6783 6784 if (mSnapScrollMode != SNAP_NONE) { 6785 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6786 vy = 0; 6787 } else { 6788 vx = 0; 6789 } 6790 } 6791 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6792 WebViewCore.resumePriority(); 6793 if (!mSelectingText) { 6794 WebViewCore.resumeUpdatePicture(mWebViewCore); 6795 } 6796 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6797 invalidate(); 6798 } 6799 return; 6800 } 6801 float currentVelocity = mScroller.getCurrVelocity(); 6802 float velocity = (float) Math.hypot(vx, vy); 6803 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6804 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6805 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6806 - Math.atan2(vy, vx))); 6807 final float circle = (float) (Math.PI) * 2.0f; 6808 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6809 vx += currentVelocity * mLastVelX / mLastVelocity; 6810 vy += currentVelocity * mLastVelY / mLastVelocity; 6811 velocity = (float) Math.hypot(vx, vy); 6812 if (DebugFlags.WEB_VIEW) { 6813 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6814 } 6815 } else if (DebugFlags.WEB_VIEW) { 6816 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6817 } 6818 } else if (DebugFlags.WEB_VIEW) { 6819 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6820 + " current=" + currentVelocity 6821 + " vx=" + vx + " vy=" + vy 6822 + " maxX=" + maxX + " maxY=" + maxY 6823 + " scrollX=" + scrollX + " scrollY=" + scrollY 6824 + " layer=" + mCurrentScrollingLayerId); 6825 } 6826 6827 // Allow sloppy flings without overscrolling at the edges. 6828 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6829 vx = 0; 6830 } 6831 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6832 vy = 0; 6833 } 6834 6835 if (overscrollDistance < overflingDistance) { 6836 if ((vx > 0 && scrollX == -overscrollDistance) || 6837 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6838 vx = 0; 6839 } 6840 if ((vy > 0 && scrollY == -overscrollDistance) || 6841 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6842 vy = 0; 6843 } 6844 } 6845 6846 mLastVelX = vx; 6847 mLastVelY = vy; 6848 mLastVelocity = velocity; 6849 6850 // no horizontal overscroll if the content just fits 6851 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6852 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6853 // Duration is calculated based on velocity. With range boundaries and overscroll 6854 // we may not know how long the final animation will take. (Hence the deprecation 6855 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6856 // resumes during this effect we will take a performance hit. See computeScroll; 6857 // we resume webcore there when the animation is finished. 6858 final int time = mScroller.getDuration(); 6859 6860 // Suppress scrollbars for layer scrolling. 6861 if (mTouchMode != TOUCH_DRAG_LAYER_MODE && mTouchMode != TOUCH_DRAG_TEXT_MODE) { 6862 mWebViewPrivate.awakenScrollBars(time); 6863 } 6864 6865 invalidate(); 6866 } 6867 6868 /** 6869 * See {@link WebView#getZoomControls()} 6870 */ 6871 @Override 6872 @Deprecated 6873 public View getZoomControls() { 6874 if (!getSettings().supportZoom()) { 6875 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6876 return null; 6877 } 6878 return mZoomManager.getExternalZoomPicker(); 6879 } 6880 6881 void dismissZoomControl() { 6882 mZoomManager.dismissZoomPicker(); 6883 } 6884 6885 float getDefaultZoomScale() { 6886 return mZoomManager.getDefaultScale(); 6887 } 6888 6889 /** 6890 * Return the overview scale of the WebView 6891 * @return The overview scale. 6892 */ 6893 float getZoomOverviewScale() { 6894 return mZoomManager.getZoomOverviewScale(); 6895 } 6896 6897 /** 6898 * See {@link WebView#canZoomIn()} 6899 */ 6900 @Override 6901 public boolean canZoomIn() { 6902 return mZoomManager.canZoomIn(); 6903 } 6904 6905 /** 6906 * See {@link WebView#canZoomOut()} 6907 */ 6908 @Override 6909 public boolean canZoomOut() { 6910 return mZoomManager.canZoomOut(); 6911 } 6912 6913 /** 6914 * See {@link WebView#zoomIn()} 6915 */ 6916 @Override 6917 public boolean zoomIn() { 6918 return mZoomManager.zoomIn(); 6919 } 6920 6921 /** 6922 * See {@link WebView#zoomOut()} 6923 */ 6924 @Override 6925 public boolean zoomOut() { 6926 return mZoomManager.zoomOut(); 6927 } 6928 6929 /* 6930 * Return true if the rect (e.g. plugin) is fully visible and maximized 6931 * inside the WebView. 6932 */ 6933 boolean isRectFitOnScreen(Rect rect) { 6934 final int rectWidth = rect.width(); 6935 final int rectHeight = rect.height(); 6936 final int viewWidth = getViewWidth(); 6937 final int viewHeight = getViewHeightWithTitle(); 6938 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 6939 scale = mZoomManager.computeScaleWithLimits(scale); 6940 return !mZoomManager.willScaleTriggerZoom(scale) 6941 && contentToViewX(rect.left) >= getScrollX() 6942 && contentToViewX(rect.right) <= getScrollX() + viewWidth 6943 && contentToViewY(rect.top) >= getScrollY() 6944 && contentToViewY(rect.bottom) <= getScrollY() + viewHeight; 6945 } 6946 6947 /* 6948 * Maximize and center the rectangle, specified in the document coordinate 6949 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6950 * animated scroll to center it. If the zoom needs to be changed, find the 6951 * zoom center and do a smooth zoom transition. The rect is in document 6952 * coordinates 6953 */ 6954 void centerFitRect(Rect rect) { 6955 final int rectWidth = rect.width(); 6956 final int rectHeight = rect.height(); 6957 final int viewWidth = getViewWidth(); 6958 final int viewHeight = getViewHeightWithTitle(); 6959 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 6960 / rectHeight); 6961 scale = mZoomManager.computeScaleWithLimits(scale); 6962 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6963 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 6964 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 6965 true, 0); 6966 } else { 6967 float actualScale = mZoomManager.getScale(); 6968 float oldScreenX = rect.left * actualScale - getScrollX(); 6969 float rectViewX = rect.left * scale; 6970 float rectViewWidth = rectWidth * scale; 6971 float newMaxWidth = mContentWidth * scale; 6972 float newScreenX = (viewWidth - rectViewWidth) / 2; 6973 // pin the newX to the WebView 6974 if (newScreenX > rectViewX) { 6975 newScreenX = rectViewX; 6976 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6977 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6978 } 6979 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6980 / (scale - actualScale); 6981 float oldScreenY = rect.top * actualScale + getTitleHeight() 6982 - getScrollY(); 6983 float rectViewY = rect.top * scale + getTitleHeight(); 6984 float rectViewHeight = rectHeight * scale; 6985 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6986 float newScreenY = (viewHeight - rectViewHeight) / 2; 6987 // pin the newY to the WebView 6988 if (newScreenY > rectViewY) { 6989 newScreenY = rectViewY; 6990 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6991 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6992 } 6993 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6994 / (scale - actualScale); 6995 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6996 mZoomManager.startZoomAnimation(scale, false); 6997 } 6998 } 6999 7000 // Called by JNI to handle a touch on a node representing an email address, 7001 // address, or phone number 7002 private void overrideLoading(String url) { 7003 mCallbackProxy.uiOverrideUrlLoading(url); 7004 } 7005 7006 @Override 7007 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7008 // FIXME: If a subwindow is showing find, and the user touches the 7009 // background window, it can steal focus. 7010 if (mFindIsUp) return false; 7011 boolean result = false; 7012 result = mWebViewPrivate.super_requestFocus(direction, previouslyFocusedRect); 7013 if (mWebViewCore.getSettings().getNeedInitialFocus() 7014 && !mWebView.isInTouchMode()) { 7015 // For cases such as GMail, where we gain focus from a direction, 7016 // we want to move to the first available link. 7017 // FIXME: If there are no visible links, we may not want to 7018 int fakeKeyDirection = 0; 7019 switch(direction) { 7020 case View.FOCUS_UP: 7021 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7022 break; 7023 case View.FOCUS_DOWN: 7024 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7025 break; 7026 case View.FOCUS_LEFT: 7027 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7028 break; 7029 case View.FOCUS_RIGHT: 7030 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7031 break; 7032 default: 7033 return result; 7034 } 7035 mWebViewCore.sendMessage(EventHub.SET_INITIAL_FOCUS, fakeKeyDirection); 7036 } 7037 return result; 7038 } 7039 7040 @Override 7041 public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7042 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7043 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7044 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7045 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7046 7047 int measuredHeight = heightSize; 7048 int measuredWidth = widthSize; 7049 7050 // Grab the content size from WebViewCore. 7051 int contentHeight = contentToViewDimension(mContentHeight); 7052 int contentWidth = contentToViewDimension(mContentWidth); 7053 7054// Log.d(LOGTAG, "------- measure " + heightMode); 7055 7056 if (heightMode != MeasureSpec.EXACTLY) { 7057 mHeightCanMeasure = true; 7058 measuredHeight = contentHeight; 7059 if (heightMode == MeasureSpec.AT_MOST) { 7060 // If we are larger than the AT_MOST height, then our height can 7061 // no longer be measured and we should scroll internally. 7062 if (measuredHeight > heightSize) { 7063 measuredHeight = heightSize; 7064 mHeightCanMeasure = false; 7065 measuredHeight |= View.MEASURED_STATE_TOO_SMALL; 7066 } 7067 } 7068 } else { 7069 mHeightCanMeasure = false; 7070 } 7071 if (mNativeClass != 0) { 7072 nativeSetHeightCanMeasure(mHeightCanMeasure); 7073 } 7074 // For the width, always use the given size unless unspecified. 7075 if (widthMode == MeasureSpec.UNSPECIFIED) { 7076 mWidthCanMeasure = true; 7077 measuredWidth = contentWidth; 7078 } else { 7079 if (measuredWidth < contentWidth) { 7080 measuredWidth |= View.MEASURED_STATE_TOO_SMALL; 7081 } 7082 mWidthCanMeasure = false; 7083 } 7084 7085 synchronized (this) { 7086 mWebViewPrivate.setMeasuredDimension(measuredWidth, measuredHeight); 7087 } 7088 } 7089 7090 @Override 7091 public boolean requestChildRectangleOnScreen(View child, 7092 Rect rect, 7093 boolean immediate) { 7094 if (mNativeClass == 0) { 7095 return false; 7096 } 7097 // don't scroll while in zoom animation. When it is done, we will adjust 7098 // the necessary components 7099 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7100 return false; 7101 } 7102 7103 rect.offset(child.getLeft() - child.getScrollX(), 7104 child.getTop() - child.getScrollY()); 7105 7106 Rect content = new Rect(viewToContentX(getScrollX()), 7107 viewToContentY(getScrollY()), 7108 viewToContentX(getScrollX() + getWidth() 7109 - mWebView.getVerticalScrollbarWidth()), 7110 viewToContentY(getScrollY() + getViewHeightWithTitle())); 7111 int screenTop = contentToViewY(content.top); 7112 int screenBottom = contentToViewY(content.bottom); 7113 int height = screenBottom - screenTop; 7114 int scrollYDelta = 0; 7115 7116 if (rect.bottom > screenBottom) { 7117 int oneThirdOfScreenHeight = height / 3; 7118 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7119 // If the rectangle is too tall to fit in the bottom two thirds 7120 // of the screen, place it at the top. 7121 scrollYDelta = rect.top - screenTop; 7122 } else { 7123 // If the rectangle will still fit on screen, we want its 7124 // top to be in the top third of the screen. 7125 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7126 } 7127 } else if (rect.top < screenTop) { 7128 scrollYDelta = rect.top - screenTop; 7129 } 7130 7131 int screenLeft = contentToViewX(content.left); 7132 int screenRight = contentToViewX(content.right); 7133 int width = screenRight - screenLeft; 7134 int scrollXDelta = 0; 7135 7136 if (rect.right > screenRight && rect.left > screenLeft) { 7137 if (rect.width() > width) { 7138 scrollXDelta += (rect.left - screenLeft); 7139 } else { 7140 scrollXDelta += (rect.right - screenRight); 7141 } 7142 } else if (rect.left < screenLeft) { 7143 scrollXDelta -= (screenLeft - rect.left); 7144 } 7145 7146 if ((scrollYDelta | scrollXDelta) != 0) { 7147 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7148 } 7149 7150 return false; 7151 } 7152 7153 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7154 String replace, int newStart, int newEnd) { 7155 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7156 arg.mReplace = replace; 7157 arg.mNewStart = newStart; 7158 arg.mNewEnd = newEnd; 7159 mTextGeneration++; 7160 arg.mTextGeneration = mTextGeneration; 7161 sendBatchableInputMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7162 } 7163 7164 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7165 // check if mWebViewCore has been destroyed 7166 if (mWebViewCore == null) { 7167 return; 7168 } 7169 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7170 arg.mEvent = event; 7171 arg.mCurrentText = currentText; 7172 // Increase our text generation number, and pass it to webcore thread 7173 mTextGeneration++; 7174 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7175 // WebKit's document state is not saved until about to leave the page. 7176 // To make sure the host application, like Browser, has the up to date 7177 // document state when it goes to background, we force to save the 7178 // document state. 7179 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7180 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, null, 1000); 7181 } 7182 7183 public synchronized WebViewCore getWebViewCore() { 7184 return mWebViewCore; 7185 } 7186 7187 private boolean canTextScroll(int directionX, int directionY) { 7188 int scrollX = getTextScrollX(); 7189 int scrollY = getTextScrollY(); 7190 int maxScrollX = getMaxTextScrollX(); 7191 int maxScrollY = getMaxTextScrollY(); 7192 boolean canScrollX = (directionX > 0) 7193 ? (scrollX < maxScrollX) 7194 : (scrollX > 0); 7195 boolean canScrollY = (directionY > 0) 7196 ? (scrollY < maxScrollY) 7197 : (scrollY > 0); 7198 return canScrollX || canScrollY; 7199 } 7200 7201 private int getTextScrollX() { 7202 return -mEditTextContent.left; 7203 } 7204 7205 private int getTextScrollY() { 7206 return -mEditTextContent.top; 7207 } 7208 7209 private int getMaxTextScrollX() { 7210 return Math.max(0, mEditTextContent.width() - mEditTextContentBounds.width()); 7211 } 7212 7213 private int getMaxTextScrollY() { 7214 return Math.max(0, mEditTextContent.height() - mEditTextContentBounds.height()); 7215 } 7216 7217 //------------------------------------------------------------------------- 7218 // Methods can be called from a separate thread, like WebViewCore 7219 // If it needs to call the View system, it has to send message. 7220 //------------------------------------------------------------------------- 7221 7222 /** 7223 * General handler to receive message coming from webkit thread 7224 */ 7225 class PrivateHandler extends Handler implements WebViewInputDispatcher.UiCallbacks { 7226 @Override 7227 public void handleMessage(Message msg) { 7228 // exclude INVAL_RECT_MSG_ID since it is frequently output 7229 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 7230 if (msg.what >= FIRST_PRIVATE_MSG_ID 7231 && msg.what <= LAST_PRIVATE_MSG_ID) { 7232 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 7233 - FIRST_PRIVATE_MSG_ID]); 7234 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 7235 && msg.what <= LAST_PACKAGE_MSG_ID) { 7236 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 7237 - FIRST_PACKAGE_MSG_ID]); 7238 } else { 7239 Log.v(LOGTAG, Integer.toString(msg.what)); 7240 } 7241 } 7242 if (mWebViewCore == null) { 7243 // after WebView's destroy() is called, skip handling messages. 7244 return; 7245 } 7246 if (mBlockWebkitViewMessages 7247 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 7248 // Blocking messages from webkit 7249 return; 7250 } 7251 switch (msg.what) { 7252 case REMEMBER_PASSWORD: { 7253 mDatabase.setUsernamePassword( 7254 msg.getData().getString("host"), 7255 msg.getData().getString("username"), 7256 msg.getData().getString("password")); 7257 ((Message) msg.obj).sendToTarget(); 7258 break; 7259 } 7260 case NEVER_REMEMBER_PASSWORD: { 7261 mDatabase.setUsernamePassword(msg.getData().getString("host"), null, null); 7262 ((Message) msg.obj).sendToTarget(); 7263 break; 7264 } 7265 case SCROLL_SELECT_TEXT: { 7266 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 7267 mSentAutoScrollMessage = false; 7268 break; 7269 } 7270 if (mCurrentScrollingLayerId == 0) { 7271 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 7272 } else { 7273 scrollLayerTo(mScrollingLayerRect.left + mAutoScrollX, 7274 mScrollingLayerRect.top + mAutoScrollY); 7275 } 7276 sendEmptyMessageDelayed( 7277 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 7278 break; 7279 } 7280 case SCROLL_TO_MSG_ID: { 7281 // arg1 = animate, arg2 = onlyIfImeIsShowing 7282 // obj = Point(x, y) 7283 if (msg.arg2 == 1) { 7284 // This scroll is intended to bring the textfield into 7285 // view, but is only necessary if the IME is showing 7286 InputMethodManager imm = InputMethodManager.peekInstance(); 7287 if (imm == null || !imm.isAcceptingText() 7288 || !imm.isActive(mWebView)) { 7289 break; 7290 } 7291 } 7292 final Point p = (Point) msg.obj; 7293 contentScrollTo(p.x, p.y, msg.arg1 == 1); 7294 break; 7295 } 7296 case UPDATE_ZOOM_RANGE: { 7297 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 7298 // mScrollX contains the new minPrefWidth 7299 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 7300 break; 7301 } 7302 case UPDATE_ZOOM_DENSITY: { 7303 final float density = (Float) msg.obj; 7304 mZoomManager.updateDefaultZoomDensity(density); 7305 break; 7306 } 7307 case NEW_PICTURE_MSG_ID: { 7308 // called for new content 7309 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 7310 setNewPicture(draw, true); 7311 break; 7312 } 7313 case WEBCORE_INITIALIZED_MSG_ID: 7314 // nativeCreate sets mNativeClass to a non-zero value 7315 String drawableDir = BrowserFrame.getRawResFilename( 7316 BrowserFrame.DRAWABLEDIR, mContext); 7317 WindowManager windowManager = 7318 (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE); 7319 Display display = windowManager.getDefaultDisplay(); 7320 nativeCreate(msg.arg1, drawableDir, 7321 ActivityManager.isHighEndGfx(display)); 7322 if (mDelaySetPicture != null) { 7323 setNewPicture(mDelaySetPicture, true); 7324 mDelaySetPicture = null; 7325 } 7326 if (mIsPaused) { 7327 nativeSetPauseDrawing(mNativeClass, true); 7328 } 7329 mInputDispatcher = new WebViewInputDispatcher(this, 7330 mWebViewCore.getInputDispatcherCallbacks()); 7331 break; 7332 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 7333 // Make sure that the textfield is currently focused 7334 // and representing the same node as the pointer. 7335 if (msg.arg2 == mTextGeneration) { 7336 String text = (String) msg.obj; 7337 if (null == text) { 7338 text = ""; 7339 } 7340 if (mInputConnection != null && 7341 mFieldPointer == msg.arg1) { 7342 mInputConnection.setTextAndKeepSelection(text); 7343 } 7344 } 7345 break; 7346 case UPDATE_TEXT_SELECTION_MSG_ID: 7347 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 7348 (WebViewCore.TextSelectionData) msg.obj); 7349 break; 7350 case TAKE_FOCUS: 7351 int direction = msg.arg1; 7352 View focusSearch = mWebView.focusSearch(direction); 7353 if (focusSearch != null && focusSearch != mWebView) { 7354 focusSearch.requestFocus(); 7355 } 7356 break; 7357 case CLEAR_TEXT_ENTRY: 7358 hideSoftKeyboard(); 7359 break; 7360 case INVAL_RECT_MSG_ID: { 7361 Rect r = (Rect)msg.obj; 7362 if (r == null) { 7363 invalidate(); 7364 } else { 7365 // we need to scale r from content into view coords, 7366 // which viewInvalidate() does for us 7367 viewInvalidate(r.left, r.top, r.right, r.bottom); 7368 } 7369 break; 7370 } 7371 case REQUEST_FORM_DATA: 7372 if (mFieldPointer == msg.arg1) { 7373 ArrayAdapter<String> adapter = (ArrayAdapter<String>)msg.obj; 7374 mAutoCompletePopup.setAdapter(adapter); 7375 } 7376 break; 7377 7378 case LONG_PRESS_CENTER: 7379 // as this is shared by keydown and trackballdown, reset all 7380 // the states 7381 mGotCenterDown = false; 7382 mTrackballDown = false; 7383 performLongClick(); 7384 break; 7385 7386 case WEBCORE_NEED_TOUCH_EVENTS: 7387 mInputDispatcher.setWebKitWantsTouchEvents(msg.arg1 != 0); 7388 break; 7389 7390 case REQUEST_KEYBOARD: 7391 if (msg.arg1 == 0) { 7392 hideSoftKeyboard(); 7393 } else { 7394 displaySoftKeyboard(false); 7395 } 7396 break; 7397 7398 case DRAG_HELD_MOTIONLESS: 7399 mHeldMotionless = MOTIONLESS_TRUE; 7400 invalidate(); 7401 // fall through to keep scrollbars awake 7402 7403 case AWAKEN_SCROLL_BARS: 7404 if (mTouchMode == TOUCH_DRAG_MODE 7405 && mHeldMotionless == MOTIONLESS_TRUE) { 7406 mWebViewPrivate.awakenScrollBars(ViewConfiguration 7407 .getScrollDefaultDelay(), false); 7408 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7409 .obtainMessage(AWAKEN_SCROLL_BARS), 7410 ViewConfiguration.getScrollDefaultDelay()); 7411 } 7412 break; 7413 7414 case SCREEN_ON: 7415 mWebView.setKeepScreenOn(msg.arg1 == 1); 7416 break; 7417 7418 case ENTER_FULLSCREEN_VIDEO: 7419 int layerId = msg.arg1; 7420 7421 String url = (String) msg.obj; 7422 if (mHTML5VideoViewProxy != null) { 7423 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 7424 } 7425 break; 7426 7427 case EXIT_FULLSCREEN_VIDEO: 7428 if (mHTML5VideoViewProxy != null) { 7429 mHTML5VideoViewProxy.exitFullScreenVideo(); 7430 } 7431 break; 7432 7433 case SHOW_FULLSCREEN: { 7434 View view = (View) msg.obj; 7435 int orientation = msg.arg1; 7436 int npp = msg.arg2; 7437 7438 if (inFullScreenMode()) { 7439 Log.w(LOGTAG, "Should not have another full screen."); 7440 dismissFullScreenMode(); 7441 } 7442 mFullScreenHolder = new PluginFullScreenHolder(WebViewClassic.this, orientation, npp); 7443 mFullScreenHolder.setContentView(view); 7444 mFullScreenHolder.show(); 7445 invalidate(); 7446 7447 break; 7448 } 7449 case HIDE_FULLSCREEN: 7450 dismissFullScreenMode(); 7451 break; 7452 7453 case SHOW_RECT_MSG_ID: { 7454 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7455 int left = contentToViewX(data.mLeft); 7456 int width = contentToViewDimension(data.mWidth); 7457 int maxWidth = contentToViewDimension(data.mContentWidth); 7458 int viewWidth = getViewWidth(); 7459 int x = (int) (left + data.mXPercentInDoc * width - 7460 data.mXPercentInView * viewWidth); 7461 if (DebugFlags.WEB_VIEW) { 7462 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7463 width + ",maxWidth=" + maxWidth + 7464 ",viewWidth=" + viewWidth + ",x=" 7465 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7466 ",xPercentInView=" + data.mXPercentInView+ ")"); 7467 } 7468 // use the passing content width to cap x as the current 7469 // mContentWidth may not be updated yet 7470 x = Math.max(0, 7471 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7472 int top = contentToViewY(data.mTop); 7473 int height = contentToViewDimension(data.mHeight); 7474 int maxHeight = contentToViewDimension(data.mContentHeight); 7475 int viewHeight = getViewHeight(); 7476 int y = (int) (top + data.mYPercentInDoc * height - 7477 data.mYPercentInView * viewHeight); 7478 if (DebugFlags.WEB_VIEW) { 7479 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7480 height + ",maxHeight=" + maxHeight + 7481 ",viewHeight=" + viewHeight + ",y=" 7482 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7483 ",yPercentInView=" + data.mYPercentInView+ ")"); 7484 } 7485 // use the passing content height to cap y as the current 7486 // mContentHeight may not be updated yet 7487 y = Math.max(0, 7488 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7489 // We need to take into account the visible title height 7490 // when scrolling since y is an absolute view position. 7491 y = Math.max(0, y - getVisibleTitleHeightImpl()); 7492 mWebView.scrollTo(x, y); 7493 } 7494 break; 7495 7496 case CENTER_FIT_RECT: 7497 centerFitRect((Rect)msg.obj); 7498 break; 7499 7500 case SET_SCROLLBAR_MODES: 7501 mHorizontalScrollBarMode = msg.arg1; 7502 mVerticalScrollBarMode = msg.arg2; 7503 break; 7504 7505 case SELECTION_STRING_CHANGED: 7506 if (mAccessibilityInjector != null) { 7507 String selectionString = (String) msg.obj; 7508 mAccessibilityInjector.onSelectionStringChange(selectionString); 7509 } 7510 break; 7511 7512 case FOCUS_NODE_CHANGED: 7513 mIsEditingText = (msg.arg1 == mFieldPointer); 7514 if (mAutoCompletePopup != null && !mIsEditingText) { 7515 mAutoCompletePopup.clearAdapter(); 7516 } 7517 // fall through to HIT_TEST_RESULT 7518 case HIT_TEST_RESULT: 7519 WebKitHitTest hit = (WebKitHitTest) msg.obj; 7520 mFocusedNode = hit; 7521 setTouchHighlightRects(hit); 7522 setHitTestResult(hit); 7523 break; 7524 7525 case SAVE_WEBARCHIVE_FINISHED: 7526 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 7527 if (saveMessage.mCallback != null) { 7528 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 7529 } 7530 break; 7531 7532 case SET_AUTOFILLABLE: 7533 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 7534 if (mInputConnection != null) { 7535 mInputConnection.setAutoFillable(mAutoFillData.getQueryId()); 7536 mAutoCompletePopup.setAutoFillQueryId(mAutoFillData.getQueryId()); 7537 } 7538 break; 7539 7540 case AUTOFILL_COMPLETE: 7541 if (mAutoCompletePopup != null) { 7542 ArrayList<String> pastEntries = new ArrayList<String>(); 7543 mAutoCompletePopup.setAdapter(new ArrayAdapter<String>( 7544 mContext, 7545 com.android.internal.R.layout.web_text_view_dropdown, 7546 pastEntries)); 7547 } 7548 break; 7549 7550 case COPY_TO_CLIPBOARD: 7551 copyToClipboard((String) msg.obj); 7552 break; 7553 7554 case INIT_EDIT_FIELD: 7555 if (mInputConnection != null) { 7556 TextFieldInitData initData = (TextFieldInitData) msg.obj; 7557 mTextGeneration = 0; 7558 mFieldPointer = initData.mFieldPointer; 7559 mInputConnection.initEditorInfo(initData); 7560 mInputConnection.setTextAndKeepSelection(initData.mText); 7561 mEditTextContentBounds.set(initData.mContentBounds); 7562 mEditTextLayerId = initData.mNodeLayerId; 7563 nativeMapLayerRect(mNativeClass, mEditTextLayerId, 7564 mEditTextContentBounds); 7565 mEditTextContent.set(initData.mContentRect); 7566 relocateAutoCompletePopup(); 7567 } 7568 break; 7569 7570 case REPLACE_TEXT:{ 7571 String text = (String)msg.obj; 7572 int start = msg.arg1; 7573 int end = msg.arg2; 7574 int cursorPosition = start + text.length(); 7575 replaceTextfieldText(start, end, text, 7576 cursorPosition, cursorPosition); 7577 break; 7578 } 7579 7580 case UPDATE_MATCH_COUNT: { 7581 WebViewCore.FindAllRequest request = (WebViewCore.FindAllRequest)msg.obj; 7582 if (request == null) { 7583 if (mFindCallback != null) { 7584 mFindCallback.updateMatchCount(0, 0, true); 7585 } 7586 } else if (request == mFindRequest) { 7587 int matchCount, matchIndex; 7588 synchronized (mFindRequest) { 7589 matchCount = request.mMatchCount; 7590 matchIndex = request.mMatchIndex; 7591 } 7592 if (mFindCallback != null) { 7593 mFindCallback.updateMatchCount(matchIndex, matchCount, false); 7594 } 7595 if (mFindListener != null) { 7596 mFindListener.onFindResultReceived(matchIndex, matchCount, true); 7597 } 7598 } 7599 break; 7600 } 7601 7602 case CLEAR_CARET_HANDLE: 7603 selectionDone(); 7604 break; 7605 7606 case KEY_PRESS: 7607 sendBatchableInputMessage(EventHub.KEY_PRESS, msg.arg1, 0, null); 7608 break; 7609 7610 case RELOCATE_AUTO_COMPLETE_POPUP: 7611 relocateAutoCompletePopup(); 7612 break; 7613 7614 case AUTOFILL_FORM: 7615 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, 7616 msg.arg1, /* unused */0); 7617 break; 7618 7619 case EDIT_TEXT_SIZE_CHANGED: 7620 if (msg.arg1 == mFieldPointer) { 7621 mEditTextContent.set((Rect)msg.obj); 7622 } 7623 break; 7624 7625 case SHOW_CARET_HANDLE: 7626 if (!mSelectingText && mIsEditingText && mIsCaretSelection) { 7627 setupWebkitSelect(); 7628 resetCaretTimer(); 7629 showPasteWindow(); 7630 } 7631 break; 7632 7633 case UPDATE_CONTENT_BOUNDS: 7634 mEditTextContentBounds.set((Rect) msg.obj); 7635 nativeMapLayerRect(mNativeClass, mEditTextLayerId, 7636 mEditTextContentBounds); 7637 break; 7638 7639 case SCROLL_EDIT_TEXT: 7640 scrollEditWithCursor(); 7641 break; 7642 7643 default: 7644 super.handleMessage(msg); 7645 break; 7646 } 7647 } 7648 7649 @Override 7650 public Looper getUiLooper() { 7651 return getLooper(); 7652 } 7653 7654 @Override 7655 public void dispatchUiEvent(MotionEvent event, int eventType, int flags) { 7656 onHandleUiEvent(event, eventType, flags); 7657 } 7658 7659 @Override 7660 public Context getContext() { 7661 return WebViewClassic.this.getContext(); 7662 } 7663 7664 @Override 7665 public boolean shouldInterceptTouchEvent(MotionEvent event) { 7666 if (!mSelectingText) { 7667 return false; 7668 } 7669 ensureSelectionHandles(); 7670 int y = Math.round(event.getY() - getTitleHeight() + getScrollY()); 7671 int x = Math.round(event.getX() + getScrollX()); 7672 boolean isPressingHandle; 7673 if (mIsCaretSelection) { 7674 isPressingHandle = mSelectHandleCenter.getBounds() 7675 .contains(x, y); 7676 } else { 7677 isPressingHandle = 7678 mSelectHandleLeft.getBounds().contains(x, y) 7679 || mSelectHandleRight.getBounds().contains(x, y); 7680 } 7681 return isPressingHandle; 7682 } 7683 7684 @Override 7685 public void showTapHighlight(boolean show) { 7686 if (mShowTapHighlight != show) { 7687 mShowTapHighlight = show; 7688 invalidate(); 7689 } 7690 } 7691 } 7692 7693 private void setHitTestTypeFromUrl(String url) { 7694 String substr = null; 7695 if (url.startsWith(SCHEME_GEO)) { 7696 mInitialHitTestResult.setType(HitTestResult.GEO_TYPE); 7697 substr = url.substring(SCHEME_GEO.length()); 7698 } else if (url.startsWith(SCHEME_TEL)) { 7699 mInitialHitTestResult.setType(HitTestResult.PHONE_TYPE); 7700 substr = url.substring(SCHEME_TEL.length()); 7701 } else if (url.startsWith(SCHEME_MAILTO)) { 7702 mInitialHitTestResult.setType(HitTestResult.EMAIL_TYPE); 7703 substr = url.substring(SCHEME_MAILTO.length()); 7704 } else { 7705 mInitialHitTestResult.setType(HitTestResult.SRC_ANCHOR_TYPE); 7706 mInitialHitTestResult.setExtra(url); 7707 return; 7708 } 7709 try { 7710 mInitialHitTestResult.setExtra(URLDecoder.decode(substr, "UTF-8")); 7711 } catch (Throwable e) { 7712 Log.w(LOGTAG, "Failed to decode URL! " + substr, e); 7713 mInitialHitTestResult.setType(HitTestResult.UNKNOWN_TYPE); 7714 } 7715 } 7716 7717 private void setHitTestResult(WebKitHitTest hit) { 7718 if (hit == null) { 7719 mInitialHitTestResult = null; 7720 return; 7721 } 7722 mInitialHitTestResult = new HitTestResult(); 7723 if (hit.mLinkUrl != null) { 7724 setHitTestTypeFromUrl(hit.mLinkUrl); 7725 if (hit.mImageUrl != null 7726 && mInitialHitTestResult.getType() == HitTestResult.SRC_ANCHOR_TYPE) { 7727 mInitialHitTestResult.setType(HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 7728 mInitialHitTestResult.setExtra(hit.mImageUrl); 7729 } 7730 } else if (hit.mImageUrl != null) { 7731 mInitialHitTestResult.setType(HitTestResult.IMAGE_TYPE); 7732 mInitialHitTestResult.setExtra(hit.mImageUrl); 7733 } else if (hit.mEditable) { 7734 mInitialHitTestResult.setType(HitTestResult.EDIT_TEXT_TYPE); 7735 } else if (hit.mIntentUrl != null) { 7736 setHitTestTypeFromUrl(hit.mIntentUrl); 7737 } 7738 } 7739 7740 private boolean shouldDrawHighlightRect() { 7741 if (mFocusedNode == null || mInitialHitTestResult == null) { 7742 return false; 7743 } 7744 if (mTouchHighlightRegion.isEmpty()) { 7745 return false; 7746 } 7747 if (mFocusedNode.mHasFocus && !mWebView.isInTouchMode()) { 7748 return mDrawCursorRing && !mFocusedNode.mEditable; 7749 } 7750 if (mFocusedNode.mHasFocus && mFocusedNode.mEditable) { 7751 return false; 7752 } 7753 return mShowTapHighlight; 7754 } 7755 7756 7757 private FocusTransitionDrawable mFocusTransition = null; 7758 static class FocusTransitionDrawable extends Drawable { 7759 Region mPreviousRegion; 7760 Region mNewRegion; 7761 float mProgress = 0; 7762 WebViewClassic mWebView; 7763 Paint mPaint; 7764 int mMaxAlpha; 7765 Point mTranslate; 7766 7767 public FocusTransitionDrawable(WebViewClassic view) { 7768 mWebView = view; 7769 mPaint = new Paint(mWebView.mTouchHightlightPaint); 7770 mMaxAlpha = mPaint.getAlpha(); 7771 } 7772 7773 @Override 7774 public void setColorFilter(ColorFilter cf) { 7775 } 7776 7777 @Override 7778 public void setAlpha(int alpha) { 7779 } 7780 7781 @Override 7782 public int getOpacity() { 7783 return 0; 7784 } 7785 7786 public void setProgress(float p) { 7787 mProgress = p; 7788 if (mWebView.mFocusTransition == this) { 7789 if (mProgress == 1f) 7790 mWebView.mFocusTransition = null; 7791 mWebView.invalidate(); 7792 } 7793 } 7794 7795 public float getProgress() { 7796 return mProgress; 7797 } 7798 7799 @Override 7800 public void draw(Canvas canvas) { 7801 if (mTranslate == null) { 7802 Rect bounds = mPreviousRegion.getBounds(); 7803 Point from = new Point(bounds.centerX(), bounds.centerY()); 7804 mNewRegion.getBounds(bounds); 7805 Point to = new Point(bounds.centerX(), bounds.centerY()); 7806 mTranslate = new Point(from.x - to.x, from.y - to.y); 7807 } 7808 int alpha = (int) (mProgress * mMaxAlpha); 7809 RegionIterator iter = new RegionIterator(mPreviousRegion); 7810 Rect r = new Rect(); 7811 mPaint.setAlpha(mMaxAlpha - alpha); 7812 float tx = mTranslate.x * mProgress; 7813 float ty = mTranslate.y * mProgress; 7814 int save = canvas.save(Canvas.MATRIX_SAVE_FLAG); 7815 canvas.translate(-tx, -ty); 7816 while (iter.next(r)) { 7817 canvas.drawRect(r, mPaint); 7818 } 7819 canvas.restoreToCount(save); 7820 iter = new RegionIterator(mNewRegion); 7821 r = new Rect(); 7822 mPaint.setAlpha(alpha); 7823 save = canvas.save(Canvas.MATRIX_SAVE_FLAG); 7824 tx = mTranslate.x - tx; 7825 ty = mTranslate.y - ty; 7826 canvas.translate(tx, ty); 7827 while (iter.next(r)) { 7828 canvas.drawRect(r, mPaint); 7829 } 7830 canvas.restoreToCount(save); 7831 } 7832 }; 7833 7834 private boolean shouldAnimateTo(WebKitHitTest hit) { 7835 // TODO: Don't be annoying or throw out the animation entirely 7836 return false; 7837 } 7838 7839 private void setTouchHighlightRects(WebKitHitTest hit) { 7840 FocusTransitionDrawable transition = null; 7841 if (shouldAnimateTo(hit)) { 7842 transition = new FocusTransitionDrawable(this); 7843 } 7844 Rect[] rects = hit != null ? hit.mTouchRects : null; 7845 if (!mTouchHighlightRegion.isEmpty()) { 7846 mWebView.invalidate(mTouchHighlightRegion.getBounds()); 7847 if (transition != null) { 7848 transition.mPreviousRegion = new Region(mTouchHighlightRegion); 7849 } 7850 mTouchHighlightRegion.setEmpty(); 7851 } 7852 if (rects != null) { 7853 mTouchHightlightPaint.setColor(hit.mTapHighlightColor); 7854 for (Rect rect : rects) { 7855 Rect viewRect = contentToViewRect(rect); 7856 // some sites, like stories in nytimes.com, set 7857 // mouse event handler in the top div. It is not 7858 // user friendly to highlight the div if it covers 7859 // more than half of the screen. 7860 if (viewRect.width() < getWidth() >> 1 7861 || viewRect.height() < getHeight() >> 1) { 7862 mTouchHighlightRegion.union(viewRect); 7863 } else if (DebugFlags.WEB_VIEW) { 7864 Log.d(LOGTAG, "Skip the huge selection rect:" 7865 + viewRect); 7866 } 7867 } 7868 mWebView.invalidate(mTouchHighlightRegion.getBounds()); 7869 if (transition != null && transition.mPreviousRegion != null) { 7870 transition.mNewRegion = new Region(mTouchHighlightRegion); 7871 mFocusTransition = transition; 7872 ObjectAnimator animator = ObjectAnimator.ofFloat( 7873 mFocusTransition, "progress", 1f); 7874 animator.start(); 7875 } 7876 } 7877 } 7878 7879 // Interface to allow the profiled WebView to hook the page swap notifications. 7880 public interface PageSwapDelegate { 7881 void onPageSwapOccurred(boolean notifyAnimationStarted); 7882 } 7883 7884 long mLastSwapTime; 7885 double mAverageSwapFps; 7886 7887 /** Called by JNI when pages are swapped (only occurs with hardware 7888 * acceleration) */ 7889 protected void pageSwapCallback(boolean notifyAnimationStarted) { 7890 if (DebugFlags.MEASURE_PAGE_SWAP_FPS) { 7891 long now = System.currentTimeMillis(); 7892 long diff = now - mLastSwapTime; 7893 mAverageSwapFps = ((1000.0 / diff) + mAverageSwapFps) / 2; 7894 Log.d(LOGTAG, "page swap fps: " + mAverageSwapFps); 7895 mLastSwapTime = now; 7896 } 7897 mWebViewCore.resumeWebKitDraw(); 7898 if (notifyAnimationStarted) { 7899 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 7900 } 7901 if (mWebView instanceof PageSwapDelegate) { 7902 // This provides a hook for ProfiledWebView to observe the tile page swaps. 7903 ((PageSwapDelegate) mWebView).onPageSwapOccurred(notifyAnimationStarted); 7904 } 7905 7906 if (mPictureListener != null) { 7907 // trigger picture listener for hardware layers. Software layers are 7908 // triggered in setNewPicture 7909 mPictureListener.onNewPicture(getWebView(), capturePicture()); 7910 } 7911 } 7912 7913 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 7914 if (mNativeClass == 0) { 7915 if (mDelaySetPicture != null) { 7916 throw new IllegalStateException("Tried to setNewPicture with" 7917 + " a delay picture already set! (memory leak)"); 7918 } 7919 // Not initialized yet, delay set 7920 mDelaySetPicture = draw; 7921 return; 7922 } 7923 WebViewCore.ViewState viewState = draw.mViewState; 7924 boolean isPictureAfterFirstLayout = viewState != null; 7925 7926 if (updateBaseLayer) { 7927 setBaseLayer(draw.mBaseLayer, 7928 getSettings().getShowVisualIndicator(), 7929 isPictureAfterFirstLayout); 7930 } 7931 final Point viewSize = draw.mViewSize; 7932 // We update the layout (i.e. request a layout from the 7933 // view system) if the last view size that we sent to 7934 // WebCore matches the view size of the picture we just 7935 // received in the fixed dimension. 7936 final boolean updateLayout = viewSize.x == mLastWidthSent 7937 && viewSize.y == mLastHeightSent; 7938 // Don't send scroll event for picture coming from webkit, 7939 // since the new picture may cause a scroll event to override 7940 // the saved history scroll position. 7941 mSendScrollEvent = false; 7942 recordNewContentSize(draw.mContentSize.x, 7943 draw.mContentSize.y, updateLayout); 7944 if (isPictureAfterFirstLayout) { 7945 // Reset the last sent data here since dealing with new page. 7946 mLastWidthSent = 0; 7947 mZoomManager.onFirstLayout(draw); 7948 int scrollX = viewState.mShouldStartScrolledRight 7949 ? getContentWidth() : viewState.mScrollX; 7950 int scrollY = viewState.mScrollY; 7951 contentScrollTo(scrollX, scrollY, false); 7952 if (!mDrawHistory) { 7953 // As we are on a new page, hide the keyboard 7954 hideSoftKeyboard(); 7955 } 7956 } 7957 mSendScrollEvent = true; 7958 7959 int functor = 0; 7960 ViewRootImpl viewRoot = mWebView.getViewRootImpl(); 7961 if (mWebView.isHardwareAccelerated() && viewRoot != null) { 7962 functor = nativeGetDrawGLFunction(mNativeClass); 7963 if (functor != 0) { 7964 viewRoot.attachFunctor(functor); 7965 } 7966 } 7967 7968 if (functor == 0 7969 || mWebView.getLayerType() != View.LAYER_TYPE_NONE) { 7970 // invalidate the screen so that the next repaint will show new content 7971 // TODO: partial invalidate 7972 mWebView.invalidate(); 7973 } 7974 7975 // update the zoom information based on the new picture 7976 mZoomManager.onNewPicture(draw); 7977 7978 if (isPictureAfterFirstLayout) { 7979 mViewManager.postReadyToDrawAll(); 7980 } 7981 scrollEditWithCursor(); 7982 7983 if (mPictureListener != null) { 7984 if (!mWebView.isHardwareAccelerated() 7985 || mWebView.getLayerType() == View.LAYER_TYPE_SOFTWARE) { 7986 // trigger picture listener for software layers. Hardware layers are 7987 // triggered in pageSwapCallback 7988 mPictureListener.onNewPicture(getWebView(), capturePicture()); 7989 } 7990 } 7991 } 7992 7993 /** 7994 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7995 * and UPDATE_TEXT_SELECTION_MSG_ID. 7996 */ 7997 private void updateTextSelectionFromMessage(int nodePointer, 7998 int textGeneration, WebViewCore.TextSelectionData data) { 7999 if (textGeneration == mTextGeneration) { 8000 if (mInputConnection != null && mFieldPointer == nodePointer) { 8001 mInputConnection.setSelection(data.mStart, data.mEnd); 8002 } 8003 } 8004 nativeSetTextSelection(mNativeClass, data.mSelectTextPtr); 8005 8006 if (data.mSelectionReason == TextSelectionData.REASON_ACCESSIBILITY_INJECTOR) { 8007 selectionDone(); 8008 mShowTextSelectionExtra = true; 8009 invalidate(); 8010 return; 8011 } 8012 8013 if (data.mSelectTextPtr != 0 && 8014 (data.mStart != data.mEnd || 8015 (mFieldPointer == nodePointer && mFieldPointer != 0))) { 8016 mIsCaretSelection = (data.mStart == data.mEnd); 8017 if (mIsCaretSelection && 8018 (mInputConnection == null || 8019 mInputConnection.getEditable().length() == 0)) { 8020 // There's no text, don't show caret handle. 8021 selectionDone(); 8022 } else { 8023 if (!mSelectingText) { 8024 setupWebkitSelect(); 8025 } else if (!mSelectionStarted) { 8026 syncSelectionCursors(); 8027 } else { 8028 adjustSelectionCursors(); 8029 } 8030 if (mIsCaretSelection) { 8031 resetCaretTimer(); 8032 } 8033 } 8034 } else { 8035 selectionDone(); 8036 } 8037 invalidate(); 8038 } 8039 8040 private void scrollEditText(int scrollX, int scrollY) { 8041 // Scrollable edit text. Scroll it. 8042 float maxScrollX = getMaxTextScrollX(); 8043 float scrollPercentX = ((float)scrollX)/maxScrollX; 8044 mEditTextContent.offsetTo(-scrollX, -scrollY); 8045 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.SCROLL_TEXT_INPUT, 0, 8046 scrollY, (Float)scrollPercentX); 8047 } 8048 8049 private void beginTextBatch() { 8050 mIsBatchingTextChanges = true; 8051 } 8052 8053 private void commitTextBatch() { 8054 if (mWebViewCore != null) { 8055 mWebViewCore.sendMessages(mBatchedTextChanges); 8056 } 8057 mBatchedTextChanges.clear(); 8058 mIsBatchingTextChanges = false; 8059 } 8060 8061 private void sendBatchableInputMessage(int what, int arg1, int arg2, 8062 Object obj) { 8063 if (mWebViewCore == null) { 8064 return; 8065 } 8066 Message message = Message.obtain(null, what, arg1, arg2, obj); 8067 if (mIsBatchingTextChanges) { 8068 mBatchedTextChanges.add(message); 8069 } else { 8070 mWebViewCore.sendMessage(message); 8071 } 8072 } 8073 8074 // Class used to use a dropdown for a <select> element 8075 private class InvokeListBox implements Runnable { 8076 // Whether the listbox allows multiple selection. 8077 private boolean mMultiple; 8078 // Passed in to a list with multiple selection to tell 8079 // which items are selected. 8080 private int[] mSelectedArray; 8081 // Passed in to a list with single selection to tell 8082 // where the initial selection is. 8083 private int mSelection; 8084 8085 private Container[] mContainers; 8086 8087 // Need these to provide stable ids to my ArrayAdapter, 8088 // which normally does not have stable ids. (Bug 1250098) 8089 private class Container extends Object { 8090 /** 8091 * Possible values for mEnabled. Keep in sync with OptionStatus in 8092 * WebViewCore.cpp 8093 */ 8094 final static int OPTGROUP = -1; 8095 final static int OPTION_DISABLED = 0; 8096 final static int OPTION_ENABLED = 1; 8097 8098 String mString; 8099 int mEnabled; 8100 int mId; 8101 8102 @Override 8103 public String toString() { 8104 return mString; 8105 } 8106 } 8107 8108 /** 8109 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8110 * and allow filtering. 8111 */ 8112 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8113 public MyArrayListAdapter() { 8114 super(WebViewClassic.this.mContext, 8115 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8116 com.android.internal.R.layout.webview_select_singlechoice, 8117 mContainers); 8118 } 8119 8120 @Override 8121 public View getView(int position, View convertView, 8122 ViewGroup parent) { 8123 // Always pass in null so that we will get a new CheckedTextView 8124 // Otherwise, an item which was previously used as an <optgroup> 8125 // element (i.e. has no check), could get used as an <option> 8126 // element, which needs a checkbox/radio, but it would not have 8127 // one. 8128 convertView = super.getView(position, null, parent); 8129 Container c = item(position); 8130 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8131 // ListView does not draw dividers between disabled and 8132 // enabled elements. Use a LinearLayout to provide dividers 8133 LinearLayout layout = new LinearLayout(mContext); 8134 layout.setOrientation(LinearLayout.VERTICAL); 8135 if (position > 0) { 8136 View dividerTop = new View(mContext); 8137 dividerTop.setBackgroundResource( 8138 android.R.drawable.divider_horizontal_bright); 8139 layout.addView(dividerTop); 8140 } 8141 8142 if (Container.OPTGROUP == c.mEnabled) { 8143 // Currently select_dialog_multichoice uses CheckedTextViews. 8144 // If that changes, the class cast will no longer be valid. 8145 if (mMultiple) { 8146 Assert.assertTrue(convertView instanceof CheckedTextView); 8147 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8148 } 8149 } else { 8150 // c.mEnabled == Container.OPTION_DISABLED 8151 // Draw the disabled element in a disabled state. 8152 convertView.setEnabled(false); 8153 } 8154 8155 layout.addView(convertView); 8156 if (position < getCount() - 1) { 8157 View dividerBottom = new View(mContext); 8158 dividerBottom.setBackgroundResource( 8159 android.R.drawable.divider_horizontal_bright); 8160 layout.addView(dividerBottom); 8161 } 8162 return layout; 8163 } 8164 return convertView; 8165 } 8166 8167 @Override 8168 public boolean hasStableIds() { 8169 // AdapterView's onChanged method uses this to determine whether 8170 // to restore the old state. Return false so that the old (out 8171 // of date) state does not replace the new, valid state. 8172 return false; 8173 } 8174 8175 private Container item(int position) { 8176 if (position < 0 || position >= getCount()) { 8177 return null; 8178 } 8179 return getItem(position); 8180 } 8181 8182 @Override 8183 public long getItemId(int position) { 8184 Container item = item(position); 8185 if (item == null) { 8186 return -1; 8187 } 8188 return item.mId; 8189 } 8190 8191 @Override 8192 public boolean areAllItemsEnabled() { 8193 return false; 8194 } 8195 8196 @Override 8197 public boolean isEnabled(int position) { 8198 Container item = item(position); 8199 if (item == null) { 8200 return false; 8201 } 8202 return Container.OPTION_ENABLED == item.mEnabled; 8203 } 8204 } 8205 8206 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 8207 mMultiple = true; 8208 mSelectedArray = selected; 8209 8210 int length = array.length; 8211 mContainers = new Container[length]; 8212 for (int i = 0; i < length; i++) { 8213 mContainers[i] = new Container(); 8214 mContainers[i].mString = array[i]; 8215 mContainers[i].mEnabled = enabled[i]; 8216 mContainers[i].mId = i; 8217 } 8218 } 8219 8220 private InvokeListBox(String[] array, int[] enabled, int selection) { 8221 mSelection = selection; 8222 mMultiple = false; 8223 8224 int length = array.length; 8225 mContainers = new Container[length]; 8226 for (int i = 0; i < length; i++) { 8227 mContainers[i] = new Container(); 8228 mContainers[i].mString = array[i]; 8229 mContainers[i].mEnabled = enabled[i]; 8230 mContainers[i].mId = i; 8231 } 8232 } 8233 8234 /* 8235 * Whenever the data set changes due to filtering, this class ensures 8236 * that the checked item remains checked. 8237 */ 8238 private class SingleDataSetObserver extends DataSetObserver { 8239 private long mCheckedId; 8240 private ListView mListView; 8241 private Adapter mAdapter; 8242 8243 /* 8244 * Create a new observer. 8245 * @param id The ID of the item to keep checked. 8246 * @param l ListView for getting and clearing the checked states 8247 * @param a Adapter for getting the IDs 8248 */ 8249 public SingleDataSetObserver(long id, ListView l, Adapter a) { 8250 mCheckedId = id; 8251 mListView = l; 8252 mAdapter = a; 8253 } 8254 8255 @Override 8256 public void onChanged() { 8257 // The filter may have changed which item is checked. Find the 8258 // item that the ListView thinks is checked. 8259 int position = mListView.getCheckedItemPosition(); 8260 long id = mAdapter.getItemId(position); 8261 if (mCheckedId != id) { 8262 // Clear the ListView's idea of the checked item, since 8263 // it is incorrect 8264 mListView.clearChoices(); 8265 // Search for mCheckedId. If it is in the filtered list, 8266 // mark it as checked 8267 int count = mAdapter.getCount(); 8268 for (int i = 0; i < count; i++) { 8269 if (mAdapter.getItemId(i) == mCheckedId) { 8270 mListView.setItemChecked(i, true); 8271 break; 8272 } 8273 } 8274 } 8275 } 8276 } 8277 8278 @Override 8279 public void run() { 8280 if (mWebViewCore == null 8281 || getWebView().getWindowToken() == null 8282 || getWebView().getViewRootImpl() == null) { 8283 // We've been detached and/or destroyed since this was posted 8284 return; 8285 } 8286 final ListView listView = (ListView) LayoutInflater.from(mContext) 8287 .inflate(com.android.internal.R.layout.select_dialog, null); 8288 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 8289 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 8290 .setView(listView).setCancelable(true) 8291 .setInverseBackgroundForced(true); 8292 8293 if (mMultiple) { 8294 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 8295 @Override 8296 public void onClick(DialogInterface dialog, int which) { 8297 mWebViewCore.sendMessage( 8298 EventHub.LISTBOX_CHOICES, 8299 adapter.getCount(), 0, 8300 listView.getCheckedItemPositions()); 8301 }}); 8302 b.setNegativeButton(android.R.string.cancel, 8303 new DialogInterface.OnClickListener() { 8304 @Override 8305 public void onClick(DialogInterface dialog, int which) { 8306 mWebViewCore.sendMessage( 8307 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8308 }}); 8309 } 8310 mListBoxDialog = b.create(); 8311 listView.setAdapter(adapter); 8312 listView.setFocusableInTouchMode(true); 8313 // There is a bug (1250103) where the checks in a ListView with 8314 // multiple items selected are associated with the positions, not 8315 // the ids, so the items do not properly retain their checks when 8316 // filtered. Do not allow filtering on multiple lists until 8317 // that bug is fixed. 8318 8319 listView.setTextFilterEnabled(!mMultiple); 8320 if (mMultiple) { 8321 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 8322 int length = mSelectedArray.length; 8323 for (int i = 0; i < length; i++) { 8324 listView.setItemChecked(mSelectedArray[i], true); 8325 } 8326 } else { 8327 listView.setOnItemClickListener(new OnItemClickListener() { 8328 @Override 8329 public void onItemClick(AdapterView<?> parent, View v, 8330 int position, long id) { 8331 // Rather than sending the message right away, send it 8332 // after the page regains focus. 8333 mListBoxMessage = Message.obtain(null, 8334 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 8335 if (mListBoxDialog != null) { 8336 mListBoxDialog.dismiss(); 8337 mListBoxDialog = null; 8338 } 8339 } 8340 }); 8341 if (mSelection != -1) { 8342 listView.setSelection(mSelection); 8343 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 8344 listView.setItemChecked(mSelection, true); 8345 DataSetObserver observer = new SingleDataSetObserver( 8346 adapter.getItemId(mSelection), listView, adapter); 8347 adapter.registerDataSetObserver(observer); 8348 } 8349 } 8350 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 8351 @Override 8352 public void onCancel(DialogInterface dialog) { 8353 mWebViewCore.sendMessage( 8354 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8355 mListBoxDialog = null; 8356 } 8357 }); 8358 mListBoxDialog.show(); 8359 } 8360 } 8361 8362 private Message mListBoxMessage; 8363 8364 /* 8365 * Request a dropdown menu for a listbox with multiple selection. 8366 * 8367 * @param array Labels for the listbox. 8368 * @param enabledArray State for each element in the list. See static 8369 * integers in Container class. 8370 * @param selectedArray Which positions are initally selected. 8371 */ 8372 void requestListBox(String[] array, int[] enabledArray, int[] 8373 selectedArray) { 8374 mPrivateHandler.post( 8375 new InvokeListBox(array, enabledArray, selectedArray)); 8376 } 8377 8378 /* 8379 * Request a dropdown menu for a listbox with single selection or a single 8380 * <select> element. 8381 * 8382 * @param array Labels for the listbox. 8383 * @param enabledArray State for each element in the list. See static 8384 * integers in Container class. 8385 * @param selection Which position is initally selected. 8386 */ 8387 void requestListBox(String[] array, int[] enabledArray, int selection) { 8388 mPrivateHandler.post( 8389 new InvokeListBox(array, enabledArray, selection)); 8390 } 8391 8392 private int getScaledMaxXScroll() { 8393 int width; 8394 if (mHeightCanMeasure == false) { 8395 width = getViewWidth() / 4; 8396 } else { 8397 Rect visRect = new Rect(); 8398 calcOurVisibleRect(visRect); 8399 width = visRect.width() / 2; 8400 } 8401 // FIXME the divisor should be retrieved from somewhere 8402 return viewToContentX(width); 8403 } 8404 8405 private int getScaledMaxYScroll() { 8406 int height; 8407 if (mHeightCanMeasure == false) { 8408 height = getViewHeight() / 4; 8409 } else { 8410 Rect visRect = new Rect(); 8411 calcOurVisibleRect(visRect); 8412 height = visRect.height() / 2; 8413 } 8414 // FIXME the divisor should be retrieved from somewhere 8415 // the closest thing today is hard-coded into ScrollView.java 8416 // (from ScrollView.java, line 363) int maxJump = height/2; 8417 return Math.round(height * mZoomManager.getInvScale()); 8418 } 8419 8420 /** 8421 * Called by JNI to invalidate view 8422 */ 8423 private void viewInvalidate() { 8424 invalidate(); 8425 } 8426 8427 /** 8428 * Pass the key directly to the page. This assumes that 8429 * nativePageShouldHandleShiftAndArrows() returned true. 8430 */ 8431 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 8432 int keyEventAction; 8433 if (down) { 8434 keyEventAction = KeyEvent.ACTION_DOWN; 8435 } else { 8436 keyEventAction = KeyEvent.ACTION_UP; 8437 } 8438 8439 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 8440 1, (metaState & KeyEvent.META_SHIFT_ON) 8441 | (metaState & KeyEvent.META_ALT_ON) 8442 | (metaState & KeyEvent.META_SYM_ON) 8443 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 8444 sendKeyEvent(event); 8445 } 8446 8447 private void sendKeyEvent(KeyEvent event) { 8448 int direction = 0; 8449 switch (event.getKeyCode()) { 8450 case KeyEvent.KEYCODE_DPAD_DOWN: 8451 direction = View.FOCUS_DOWN; 8452 break; 8453 case KeyEvent.KEYCODE_DPAD_UP: 8454 direction = View.FOCUS_UP; 8455 break; 8456 case KeyEvent.KEYCODE_DPAD_LEFT: 8457 direction = View.FOCUS_LEFT; 8458 break; 8459 case KeyEvent.KEYCODE_DPAD_RIGHT: 8460 direction = View.FOCUS_RIGHT; 8461 break; 8462 case KeyEvent.KEYCODE_TAB: 8463 direction = event.isShiftPressed() ? View.FOCUS_BACKWARD : View.FOCUS_FORWARD; 8464 break; 8465 } 8466 if (direction != 0 && mWebView.focusSearch(direction) == null) { 8467 // Can't take focus in that direction 8468 direction = 0; 8469 } 8470 int eventHubAction = EventHub.KEY_UP; 8471 if (event.getAction() == KeyEvent.ACTION_DOWN) { 8472 eventHubAction = EventHub.KEY_DOWN; 8473 int sound = keyCodeToSoundsEffect(event.getKeyCode()); 8474 if (sound != 0) { 8475 mWebView.playSoundEffect(sound); 8476 } 8477 } 8478 sendBatchableInputMessage(eventHubAction, direction, 0, event); 8479 } 8480 8481 /** 8482 * @return Whether accessibility script has been injected. 8483 */ 8484 private boolean accessibilityScriptInjected() { 8485 // TODO: Maybe the injected script should announce its presence in 8486 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 8487 // will check that as one of the conditions it looks for 8488 return mAccessibilityScriptInjected; 8489 } 8490 8491 /** 8492 * See {@link WebView#setBackgroundColor(int)} 8493 */ 8494 @Override 8495 public void setBackgroundColor(int color) { 8496 mBackgroundColor = color; 8497 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 8498 } 8499 8500 /** 8501 * See {@link WebView#debugDump()} 8502 */ 8503 @Override 8504 @Deprecated 8505 public void debugDump() { 8506 } 8507 8508 /** 8509 * Enable the communication b/t the webView and VideoViewProxy 8510 * 8511 * only used by the Browser 8512 */ 8513 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 8514 mHTML5VideoViewProxy = proxy; 8515 } 8516 8517 /** 8518 * Set the time to wait between passing touches to WebCore. See also the 8519 * TOUCH_SENT_INTERVAL member for further discussion. 8520 * 8521 * This is only used by the DRT test application. 8522 */ 8523 public void setTouchInterval(int interval) { 8524 mCurrentTouchInterval = interval; 8525 } 8526 8527 /** 8528 * Copy text into the clipboard. This is called indirectly from 8529 * WebViewCore. 8530 * @param text The text to put into the clipboard. 8531 */ 8532 private void copyToClipboard(String text) { 8533 ClipboardManager cm = (ClipboardManager)mContext 8534 .getSystemService(Context.CLIPBOARD_SERVICE); 8535 ClipData clip = ClipData.newPlainText(getTitle(), text); 8536 cm.setPrimaryClip(clip); 8537 } 8538 8539 /*package*/ void autoFillForm(int autoFillQueryId) { 8540 mPrivateHandler.obtainMessage(AUTOFILL_FORM, autoFillQueryId, 0) 8541 .sendToTarget(); 8542 } 8543 8544 /* package */ ViewManager getViewManager() { 8545 return mViewManager; 8546 } 8547 8548 /** send content invalidate */ 8549 protected void contentInvalidateAll() { 8550 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 8551 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 8552 } 8553 } 8554 8555 /** discard all textures from tiles. Used in Profiled WebView */ 8556 public void discardAllTextures() { 8557 nativeDiscardAllTextures(); 8558 } 8559 8560 @Override 8561 public void setLayerType(int layerType, Paint paint) { 8562 updateHwAccelerated(); 8563 } 8564 8565 private void updateHwAccelerated() { 8566 if (mNativeClass == 0) { 8567 return; 8568 } 8569 boolean hwAccelerated = false; 8570 if (mWebView.isHardwareAccelerated() 8571 && mWebView.getLayerType() != View.LAYER_TYPE_SOFTWARE) { 8572 hwAccelerated = true; 8573 } 8574 8575 // result is of type LayerAndroid::InvalidateFlags, non zero means invalidate/redraw 8576 int result = nativeSetHwAccelerated(mNativeClass, hwAccelerated); 8577 if (mWebViewCore != null && !mBlockWebkitViewMessages && result != 0) { 8578 mWebViewCore.contentDraw(); 8579 } 8580 } 8581 8582 /** 8583 * Begin collecting per-tile profiling data 8584 * 8585 * only used by profiling tests 8586 */ 8587 public void tileProfilingStart() { 8588 nativeTileProfilingStart(); 8589 } 8590 /** 8591 * Return per-tile profiling data 8592 * 8593 * only used by profiling tests 8594 */ 8595 public float tileProfilingStop() { 8596 return nativeTileProfilingStop(); 8597 } 8598 8599 /** only used by profiling tests */ 8600 public void tileProfilingClear() { 8601 nativeTileProfilingClear(); 8602 } 8603 /** only used by profiling tests */ 8604 public int tileProfilingNumFrames() { 8605 return nativeTileProfilingNumFrames(); 8606 } 8607 /** only used by profiling tests */ 8608 public int tileProfilingNumTilesInFrame(int frame) { 8609 return nativeTileProfilingNumTilesInFrame(frame); 8610 } 8611 /** only used by profiling tests */ 8612 public int tileProfilingGetInt(int frame, int tile, String key) { 8613 return nativeTileProfilingGetInt(frame, tile, key); 8614 } 8615 /** only used by profiling tests */ 8616 public float tileProfilingGetFloat(int frame, int tile, String key) { 8617 return nativeTileProfilingGetFloat(frame, tile, key); 8618 } 8619 8620 /** 8621 * Checks the focused content for an editable text field. This can be 8622 * text input or ContentEditable. 8623 * @return true if the focused item is an editable text field. 8624 */ 8625 boolean focusCandidateIsEditableText() { 8626 if (mFocusedNode != null) { 8627 return mFocusedNode.mEditable; 8628 } 8629 return false; 8630 } 8631 8632 // Called via JNI 8633 private void postInvalidate() { 8634 mWebView.postInvalidate(); 8635 } 8636 8637 private native void nativeCreate(int ptr, String drawableDir, boolean isHighEndGfx); 8638 private native void nativeDebugDump(); 8639 private native void nativeDestroy(); 8640 8641 private native void nativeDraw(Canvas canvas, RectF visibleRect, 8642 int color, int extra); 8643 private native void nativeDumpDisplayTree(String urlOrNull); 8644 private native boolean nativeEvaluateLayersAnimations(int nativeInstance); 8645 private native int nativeCreateDrawGLFunction(int nativeInstance, Rect invScreenRect, 8646 Rect screenRect, RectF visibleContentRect, float scale, int extras); 8647 private native int nativeGetDrawGLFunction(int nativeInstance); 8648 private native void nativeUpdateDrawGLFunction(int nativeInstance, Rect invScreenRect, 8649 Rect screenRect, RectF visibleContentRect, float scale); 8650 private native String nativeGetSelection(); 8651 private native Rect nativeLayerBounds(int layer); 8652 private native void nativeSetHeightCanMeasure(boolean measure); 8653 private native boolean nativeSetBaseLayer(int nativeInstance, 8654 int layer, boolean showVisualIndicator, boolean isPictureAfterFirstLayout); 8655 private native int nativeGetBaseLayer(int nativeInstance); 8656 private native void nativeCopyBaseContentToPicture(Picture pict); 8657 private native boolean nativeHasContent(); 8658 private native void nativeStopGL(); 8659 private native void nativeDiscardAllTextures(); 8660 private native void nativeTileProfilingStart(); 8661 private native float nativeTileProfilingStop(); 8662 private native void nativeTileProfilingClear(); 8663 private native int nativeTileProfilingNumFrames(); 8664 private native int nativeTileProfilingNumTilesInFrame(int frame); 8665 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 8666 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 8667 8668 private native void nativeUseHardwareAccelSkia(boolean enabled); 8669 8670 // Returns a pointer to the scrollable LayerAndroid at the given point. 8671 private native int nativeScrollableLayer(int nativeInstance, int x, int y, Rect scrollRect, 8672 Rect scrollBounds); 8673 /** 8674 * Scroll the specified layer. 8675 * @param nativeInstance Native WebView instance 8676 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 8677 * @param newX Destination x position to which to scroll. 8678 * @param newY Destination y position to which to scroll. 8679 * @return True if the layer is successfully scrolled. 8680 */ 8681 private native boolean nativeScrollLayer(int nativeInstance, int layer, int newX, int newY); 8682 private native void nativeSetIsScrolling(boolean isScrolling); 8683 private native int nativeGetBackgroundColor(int nativeInstance); 8684 native boolean nativeSetProperty(String key, String value); 8685 native String nativeGetProperty(String key); 8686 /** 8687 * See {@link ComponentCallbacks2} for the trim levels and descriptions 8688 */ 8689 private static native void nativeOnTrimMemory(int level); 8690 private static native void nativeSetPauseDrawing(int instance, boolean pause); 8691 private static native void nativeSetTextSelection(int instance, int selection); 8692 private static native int nativeGetHandleLayerId(int instance, int handle, 8693 Point cursorLocation, QuadF textQuad); 8694 private static native boolean nativeIsBaseFirst(int instance); 8695 private static native void nativeMapLayerRect(int instance, int layerId, 8696 Rect rect); 8697 // Returns 1 if a layer sync is needed, else 0 8698 private static native int nativeSetHwAccelerated(int instance, boolean hwAccelerated); 8699} 8700