WebView.java revision 9a6077e22eeb0364b6b66d92f594f30cfdf5448c
1/* 2 * Copyright (C) 2006 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.Rect; 47import android.graphics.RectF; 48import android.graphics.Region; 49import android.graphics.RegionIterator; 50import android.graphics.Shader; 51import android.graphics.drawable.Drawable; 52import android.net.Proxy; 53import android.net.ProxyProperties; 54import android.net.Uri; 55import android.net.http.SslCertificate; 56import android.os.AsyncTask; 57import android.os.Bundle; 58import android.os.Handler; 59import android.os.Looper; 60import android.os.Message; 61import android.os.StrictMode; 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.AttributeSet; 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.ViewConfiguration; 87import android.view.ViewGroup; 88import android.view.ViewParent; 89import android.view.ViewTreeObserver; 90import android.view.WindowManager; 91import android.view.accessibility.AccessibilityEvent; 92import android.view.accessibility.AccessibilityManager; 93import android.view.accessibility.AccessibilityNodeInfo; 94import android.view.inputmethod.BaseInputConnection; 95import android.view.inputmethod.EditorInfo; 96import android.view.inputmethod.InputConnection; 97import android.view.inputmethod.InputMethodManager; 98import android.webkit.WebTextView.AutoCompleteAdapter; 99import android.webkit.WebViewCore.DrawData; 100import android.webkit.WebViewCore.EventHub; 101import android.webkit.WebViewCore.TextFieldInitData; 102import android.webkit.WebViewCore.TouchEventData; 103import android.webkit.WebViewCore.TouchHighlightData; 104import android.webkit.WebViewCore.WebKitHitTest; 105import android.widget.AbsoluteLayout; 106import android.widget.Adapter; 107import android.widget.AdapterView; 108import android.widget.AdapterView.OnItemClickListener; 109import android.widget.ArrayAdapter; 110import android.widget.CheckedTextView; 111import android.widget.LinearLayout; 112import android.widget.ListView; 113import android.widget.OverScroller; 114import android.widget.Toast; 115 116import junit.framework.Assert; 117 118import java.io.File; 119import java.io.FileInputStream; 120import java.io.FileNotFoundException; 121import java.io.FileOutputStream; 122import java.io.IOException; 123import java.io.InputStream; 124import java.io.OutputStream; 125import java.net.URLDecoder; 126import java.util.ArrayList; 127import java.util.HashMap; 128import java.util.HashSet; 129import java.util.List; 130import java.util.Map; 131import java.util.Set; 132import java.util.Vector; 133import java.util.regex.Matcher; 134import java.util.regex.Pattern; 135 136/** 137 * <p>A View that displays web pages. This class is the basis upon which you 138 * can roll your own web browser or simply display some online content within your Activity. 139 * It uses the WebKit rendering engine to display 140 * web pages and includes methods to navigate forward and backward 141 * through a history, zoom in and out, perform text searches and more.</p> 142 * <p>To enable the built-in zoom, set 143 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 144 * (introduced in API version 3). 145 * <p>Note that, in order for your Activity to access the Internet and load web pages 146 * in a WebView, you must add the {@code INTERNET} permissions to your 147 * Android Manifest file:</p> 148 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 149 * 150 * <p>This must be a child of the <a 151 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 152 * element.</p> 153 * 154 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 155 * tutorial</a>.</p> 156 * 157 * <h3>Basic usage</h3> 158 * 159 * <p>By default, a WebView provides no browser-like widgets, does not 160 * enable JavaScript and web page errors are ignored. If your goal is only 161 * to display some HTML as a part of your UI, this is probably fine; 162 * the user won't need to interact with the web page beyond reading 163 * it, and the web page won't need to interact with the user. If you 164 * actually want a full-blown web browser, then you probably want to 165 * invoke the Browser application with a URL Intent rather than show it 166 * with a WebView. For example: 167 * <pre> 168 * Uri uri = Uri.parse("http://www.example.com"); 169 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 170 * startActivity(intent); 171 * </pre> 172 * <p>See {@link android.content.Intent} for more information.</p> 173 * 174 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 175 * or set the entire Activity window as a WebView during {@link 176 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 177 * <pre class="prettyprint"> 178 * WebView webview = new WebView(this); 179 * setContentView(webview); 180 * </pre> 181 * 182 * <p>Then load the desired web page:</p> 183 * <pre> 184 * // Simplest usage: note that an exception will NOT be thrown 185 * // if there is an error loading this page (see below). 186 * webview.loadUrl("http://slashdot.org/"); 187 * 188 * // OR, you can also load from an HTML string: 189 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 190 * webview.loadData(summary, "text/html", null); 191 * // ... although note that there are restrictions on what this HTML can do. 192 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 193 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 194 * </pre> 195 * 196 * <p>A WebView has several customization points where you can add your 197 * own behavior. These are:</p> 198 * 199 * <ul> 200 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 201 * This class is called when something that might impact a 202 * browser UI happens, for instance, progress updates and 203 * JavaScript alerts are sent here (see <a 204 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 205 * </li> 206 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 207 * It will be called when things happen that impact the 208 * rendering of the content, eg, errors or form submissions. You 209 * can also intercept URL loading here (via {@link 210 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 211 * shouldOverrideUrlLoading()}).</li> 212 * <li>Modifying the {@link android.webkit.WebSettings}, such as 213 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 214 * setJavaScriptEnabled()}. </li> 215 * <li>Injecting Java objects into the WebView using the 216 * {@link android.webkit.WebView#addJavascriptInterface} method. This 217 * method allows you to inject Java objects into a page's JavaScript 218 * context, so that they can be accessed by JavaScript in the page.</li> 219 * </ul> 220 * 221 * <p>Here's a more complicated example, showing error handling, 222 * settings, and progress notification:</p> 223 * 224 * <pre class="prettyprint"> 225 * // Let's display the progress in the activity title bar, like the 226 * // browser app does. 227 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 228 * 229 * webview.getSettings().setJavaScriptEnabled(true); 230 * 231 * final Activity activity = this; 232 * webview.setWebChromeClient(new WebChromeClient() { 233 * public void onProgressChanged(WebView view, int progress) { 234 * // Activities and WebViews measure progress with different scales. 235 * // The progress meter will automatically disappear when we reach 100% 236 * activity.setProgress(progress * 1000); 237 * } 238 * }); 239 * webview.setWebViewClient(new WebViewClient() { 240 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 241 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 242 * } 243 * }); 244 * 245 * webview.loadUrl("http://slashdot.org/"); 246 * </pre> 247 * 248 * <h3>Cookie and window management</h3> 249 * 250 * <p>For obvious security reasons, your application has its own 251 * cache, cookie store etc.—it does not share the Browser 252 * application's data. Cookies are managed on a separate thread, so 253 * operations like index building don't block the UI 254 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 255 * if you want to use cookies in your application. 256 * </p> 257 * 258 * <p>By default, requests by the HTML to open new windows are 259 * ignored. This is true whether they be opened by JavaScript or by 260 * the target attribute on a link. You can customize your 261 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 262 * and render them in whatever manner you want.</p> 263 * 264 * <p>The standard behavior for an Activity is to be destroyed and 265 * recreated when the device orientation or any other configuration changes. This will cause 266 * the WebView to reload the current page. If you don't want that, you 267 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 268 * changes, and then just leave the WebView alone. It'll automatically 269 * re-orient itself as appropriate. Read <a 270 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 271 * more information about how to handle configuration changes during runtime.</p> 272 * 273 * 274 * <h3>Building web pages to support different screen densities</h3> 275 * 276 * <p>The screen density of a device is based on the screen resolution. A screen with low density 277 * has fewer available pixels per inch, where a screen with high density 278 * has more — sometimes significantly more — pixels per inch. The density of a 279 * screen is important because, other things being equal, a UI element (such as a button) whose 280 * height and width are defined in terms of screen pixels will appear larger on the lower density 281 * screen and smaller on the higher density screen. 282 * For simplicity, Android collapses all actual screen densities into three generalized densities: 283 * high, medium, and low.</p> 284 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 285 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 286 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 287 * are bigger). 288 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 289 * you (as a web developer) target screens with different screen densities.</p> 290 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 291 * <ul> 292 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 293 * default scaling factor used for the current device. For example, if the value of {@code 294 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 295 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 296 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 297 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 298 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 299 * (discussed below), then you can stop this default scaling behavior.</li> 300 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 301 * densities for which this style sheet is to be used. The corresponding value should be either 302 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 303 * density, or high density screens, respectively. For example: 304 * <pre> 305 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 306 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 307 * which is the high density pixel ratio.</p> 308 * </li> 309 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 310 * this to specify the target density for which the web page is designed, using the following 311 * values: 312 * <ul> 313 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 314 * occurs.</li> 315 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 316 * as appropriate.</li> 317 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 318 * low density screens scale down. This is also the default behavior.</li> 319 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 320 * as appropriate.</li> 321 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 322 * values are 70-400).</li> 323 * </ul> 324 * <p>Here's an example meta tag to specify the target density:</p> 325 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 326 * </ul> 327 * <p>If you want to modify your web page for different densities, by using the {@code 328 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 329 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 330 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 331 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 332 * 333 * <h3>HTML5 Video support</h3> 334 * 335 * <p>In order to support inline HTML5 video in your application, you need to have hardware 336 * acceleration turned on, and set a {@link android.webkit.WebChromeClient}. For full screen support, 337 * implementations of {@link WebChromeClient#onShowCustomView(View, WebChromeClient.CustomViewCallback)} 338 * and {@link WebChromeClient#onHideCustomView()} are required, 339 * {@link WebChromeClient#getVideoLoadingProgressView()} is optional. 340 * </p> 341 * 342 * 343 */ 344@Widget 345public class WebView extends AbsoluteLayout 346 implements ViewTreeObserver.OnGlobalFocusChangeListener, 347 ViewGroup.OnHierarchyChangeListener { 348 349 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 350 @Override 351 public void onGlobalLayout() { 352 if (isShown()) { 353 setGLRectViewport(); 354 } 355 } 356 } 357 358 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 359 @Override 360 public void onScrollChanged() { 361 if (isShown()) { 362 setGLRectViewport(); 363 } 364 } 365 } 366 367 /** 368 * InputConnection used for ContentEditable. This captures changes 369 * to the text and sends them either as key strokes or text changes. 370 */ 371 private class WebViewInputConnection extends BaseInputConnection { 372 // Used for mapping characters to keys typed. 373 private KeyCharacterMap mKeyCharacterMap; 374 private boolean mIsKeySentByMe; 375 private int mInputType; 376 private int mImeOptions; 377 private String mHint; 378 379 public WebViewInputConnection() { 380 super(WebView.this, true); 381 } 382 383 @Override 384 public boolean sendKeyEvent(KeyEvent event) { 385 // Some IMEs send key events directly using sendKeyEvents. 386 // WebViewInputConnection should treat these as text changes. 387 if (!mIsKeySentByMe) { 388 if (event.getAction() == KeyEvent.ACTION_UP) { 389 if (event.getKeyCode() == KeyEvent.KEYCODE_DEL) { 390 return deleteSurroundingText(1, 0); 391 } else if (event.getKeyCode() == KeyEvent.KEYCODE_FORWARD_DEL) { 392 return deleteSurroundingText(0, 1); 393 } else if (event.getUnicodeChar() != 0){ 394 String newComposingText = 395 Character.toString((char)event.getUnicodeChar()); 396 return commitText(newComposingText, 1); 397 } 398 } else if (event.getAction() == KeyEvent.ACTION_DOWN && 399 (event.getKeyCode() == KeyEvent.KEYCODE_DEL 400 || event.getKeyCode() == KeyEvent.KEYCODE_FORWARD_DEL 401 || event.getUnicodeChar() != 0)) { 402 return true; // only act on action_down 403 } 404 } 405 return super.sendKeyEvent(event); 406 } 407 408 public void setTextAndKeepSelection(CharSequence text) { 409 Editable editable = getEditable(); 410 int selectionStart = Selection.getSelectionStart(editable); 411 int selectionEnd = Selection.getSelectionEnd(editable); 412 editable.replace(0, editable.length(), text); 413 InputMethodManager imm = InputMethodManager.peekInstance(); 414 if (imm != null) { 415 // Since the text has changed, do not allow the IME to replace the 416 // existing text as though it were a completion. 417 imm.restartInput(WebView.this); 418 } 419 // Keep the previous selection. 420 selectionStart = Math.min(selectionStart, editable.length()); 421 selectionEnd = Math.min(selectionEnd, editable.length()); 422 setSelection(selectionStart, selectionEnd); 423 } 424 425 @Override 426 public boolean setComposingText(CharSequence text, int newCursorPosition) { 427 Editable editable = getEditable(); 428 int start = getComposingSpanStart(editable); 429 int end = getComposingSpanEnd(editable); 430 if (start < 0 || end < 0) { 431 start = Selection.getSelectionStart(editable); 432 end = Selection.getSelectionEnd(editable); 433 } 434 if (end < start) { 435 int temp = end; 436 end = start; 437 start = temp; 438 } 439 setNewText(start, end, text); 440 return super.setComposingText(text, newCursorPosition); 441 } 442 443 @Override 444 public boolean commitText(CharSequence text, int newCursorPosition) { 445 setComposingText(text, newCursorPosition); 446 int cursorPosition = Selection.getSelectionEnd(getEditable()); 447 setComposingRegion(cursorPosition, cursorPosition); 448 return true; 449 } 450 451 @Override 452 public boolean deleteSurroundingText(int leftLength, int rightLength) { 453 Editable editable = getEditable(); 454 int cursorPosition = Selection.getSelectionEnd(editable); 455 int startDelete = Math.max(0, cursorPosition - leftLength); 456 int endDelete = Math.min(editable.length(), 457 cursorPosition + rightLength); 458 setNewText(startDelete, endDelete, ""); 459 return super.deleteSurroundingText(leftLength, rightLength); 460 } 461 462 public void initEditorInfo(WebViewCore.TextFieldInitData initData) { 463 int type = initData.mType; 464 int inputType = InputType.TYPE_CLASS_TEXT 465 | InputType.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT; 466 int imeOptions = EditorInfo.IME_FLAG_NO_EXTRACT_UI 467 | EditorInfo.IME_FLAG_NO_FULLSCREEN; 468 if (!initData.mIsSpellCheckEnabled) { 469 inputType |= InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS; 470 } 471 if (WebTextView.TEXT_AREA != type 472 && initData.mIsTextFieldNext) { 473 imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT; 474 } 475 switch (type) { 476 case WebTextView.NORMAL_TEXT_FIELD: 477 imeOptions |= EditorInfo.IME_ACTION_GO; 478 break; 479 case WebTextView.TEXT_AREA: 480 inputType |= InputType.TYPE_TEXT_FLAG_MULTI_LINE 481 | InputType.TYPE_TEXT_FLAG_CAP_SENTENCES 482 | InputType.TYPE_TEXT_FLAG_AUTO_CORRECT; 483 imeOptions |= EditorInfo.IME_ACTION_NONE; 484 break; 485 case WebTextView.PASSWORD: 486 inputType |= EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 487 imeOptions |= EditorInfo.IME_ACTION_GO; 488 break; 489 case WebTextView.SEARCH: 490 imeOptions |= EditorInfo.IME_ACTION_SEARCH; 491 break; 492 case WebTextView.EMAIL: 493 // inputType needs to be overwritten because of the different text variation. 494 inputType = InputType.TYPE_CLASS_TEXT 495 | InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS; 496 imeOptions |= EditorInfo.IME_ACTION_GO; 497 break; 498 case WebTextView.NUMBER: 499 // inputType needs to be overwritten because of the different class. 500 inputType = InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_NORMAL 501 | InputType.TYPE_NUMBER_FLAG_SIGNED | InputType.TYPE_NUMBER_FLAG_DECIMAL; 502 // Number and telephone do not have both a Tab key and an 503 // action, so set the action to NEXT 504 imeOptions |= EditorInfo.IME_ACTION_NEXT; 505 break; 506 case WebTextView.TELEPHONE: 507 // inputType needs to be overwritten because of the different class. 508 inputType = InputType.TYPE_CLASS_PHONE; 509 imeOptions |= EditorInfo.IME_ACTION_NEXT; 510 break; 511 case WebTextView.URL: 512 // TYPE_TEXT_VARIATION_URI prevents Tab key from showing, so 513 // exclude it for now. 514 imeOptions |= EditorInfo.IME_ACTION_GO; 515 inputType |= InputType.TYPE_TEXT_VARIATION_URI; 516 break; 517 default: 518 imeOptions |= EditorInfo.IME_ACTION_GO; 519 break; 520 } 521 mHint = initData.mLabel; 522 mInputType = inputType; 523 mImeOptions = imeOptions; 524 } 525 526 public void setupEditorInfo(EditorInfo outAttrs) { 527 outAttrs.inputType = mInputType; 528 outAttrs.imeOptions = mImeOptions; 529 outAttrs.hintText = mHint; 530 outAttrs.initialCapsMode = getCursorCapsMode(InputType.TYPE_CLASS_TEXT); 531 } 532 533 /** 534 * Sends a text change to webkit indirectly. If it is a single- 535 * character add or delete, it sends it as a key stroke. If it cannot 536 * be represented as a key stroke, it sends it as a field change. 537 * @param start The start offset (inclusive) of the text being changed. 538 * @param end The end offset (exclusive) of the text being changed. 539 * @param text The new text to replace the changed text. 540 */ 541 private void setNewText(int start, int end, CharSequence text) { 542 mIsKeySentByMe = true; 543 Editable editable = getEditable(); 544 CharSequence original = editable.subSequence(start, end); 545 boolean isCharacterAdd = false; 546 boolean isCharacterDelete = false; 547 int textLength = text.length(); 548 int originalLength = original.length(); 549 if (textLength > originalLength) { 550 isCharacterAdd = (textLength == originalLength + 1) 551 && TextUtils.regionMatches(text, 0, original, 0, 552 originalLength); 553 } else if (originalLength > textLength) { 554 isCharacterDelete = (textLength == originalLength - 1) 555 && TextUtils.regionMatches(text, 0, original, 0, 556 textLength); 557 } 558 boolean sendChange = false; 559 if (isCharacterAdd) { 560 sendChange = !sendCharacter(text.charAt(textLength - 1)); 561 } else if (isCharacterDelete) { 562 sendDeleteKey(); 563 } else { 564 sendChange = (textLength != originalLength) || 565 !TextUtils.regionMatches(text, 0, original, 0, 566 textLength); 567 } 568 if (sendChange) { 569 // Send a message so that key strokes and text replacement 570 // do not come out of order. 571 Message replaceMessage = mPrivateHandler.obtainMessage( 572 REPLACE_TEXT, start, end, text.toString()); 573 mPrivateHandler.sendMessage(replaceMessage); 574 } 575 mIsKeySentByMe = false; 576 } 577 578 /** 579 * Send a single character to the WebView as a key down and up event. 580 * @param c The character to be sent. 581 */ 582 private boolean sendCharacter(char c) { 583 if (mKeyCharacterMap == null) { 584 mKeyCharacterMap = KeyCharacterMap.load(KeyCharacterMap.VIRTUAL_KEYBOARD); 585 } 586 char[] chars = new char[1]; 587 chars[0] = c; 588 KeyEvent[] events = mKeyCharacterMap.getEvents(chars); 589 boolean mapsToKeyEvent = (events != null); 590 if (mapsToKeyEvent) { 591 for (KeyEvent event : events) { 592 sendKeyEvent(event); 593 } 594 } 595 return mapsToKeyEvent; 596 } 597 598 /** 599 * Send the delete character as a key down and up event. 600 */ 601 private void sendDeleteKey() { 602 long eventTime = SystemClock.uptimeMillis(); 603 sendKeyEvent(new KeyEvent(eventTime, eventTime, 604 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL, 0, 0, 605 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 606 KeyEvent.FLAG_SOFT_KEYBOARD)); 607 sendKeyEvent(new KeyEvent(SystemClock.uptimeMillis(), eventTime, 608 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DEL, 0, 0, 609 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 610 KeyEvent.FLAG_SOFT_KEYBOARD)); 611 } 612 } 613 614 615 // The listener to capture global layout change event. 616 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 617 618 // The listener to capture scroll event. 619 private InnerScrollChangedListener mScrollChangedListener = null; 620 621 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 622 // the screen all-the-time. Good for profiling our drawing code 623 static private final boolean AUTO_REDRAW_HACK = false; 624 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 625 private boolean mAutoRedraw; 626 627 // Reference to the AlertDialog displayed by InvokeListBox. 628 // It's used to dismiss the dialog in destroy if not done before. 629 private AlertDialog mListBoxDialog = null; 630 631 static final String LOGTAG = "webview"; 632 633 private ZoomManager mZoomManager; 634 635 private final Rect mGLRectViewport = new Rect(); 636 private final Rect mViewRectViewport = new Rect(); 637 private final RectF mVisibleContentRect = new RectF(); 638 private boolean mGLViewportEmpty = false; 639 WebViewInputConnection mInputConnection = null; 640 private int mFieldPointer; 641 642 /** 643 * Transportation object for returning WebView across thread boundaries. 644 */ 645 public class WebViewTransport { 646 private WebView mWebview; 647 648 /** 649 * Set the WebView to the transportation object. 650 * @param webview The WebView to transport. 651 */ 652 public synchronized void setWebView(WebView webview) { 653 mWebview = webview; 654 } 655 656 /** 657 * Return the WebView object. 658 * @return WebView The transported WebView object. 659 */ 660 public synchronized WebView getWebView() { 661 return mWebview; 662 } 663 } 664 665 private static class OnTrimMemoryListener implements ComponentCallbacks2 { 666 private static OnTrimMemoryListener sInstance = null; 667 668 static void init(Context c) { 669 if (sInstance == null) { 670 sInstance = new OnTrimMemoryListener(c.getApplicationContext()); 671 } 672 } 673 674 private OnTrimMemoryListener(Context c) { 675 c.registerComponentCallbacks(this); 676 } 677 678 @Override 679 public void onConfigurationChanged(Configuration newConfig) { 680 // Ignore 681 } 682 683 @Override 684 public void onLowMemory() { 685 // Ignore 686 } 687 688 @Override 689 public void onTrimMemory(int level) { 690 if (DebugFlags.WEB_VIEW) { 691 Log.d("WebView", "onTrimMemory: " + level); 692 } 693 WebView.nativeOnTrimMemory(level); 694 } 695 696 } 697 698 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 699 private final CallbackProxy mCallbackProxy; 700 701 private final WebViewDatabase mDatabase; 702 703 // SSL certificate for the main top-level page (if secure) 704 private SslCertificate mCertificate; 705 706 // Native WebView pointer that is 0 until the native object has been 707 // created. 708 private int mNativeClass; 709 // This would be final but it needs to be set to null when the WebView is 710 // destroyed. 711 private WebViewCore mWebViewCore; 712 // Handler for dispatching UI messages. 713 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 714 private WebTextView mWebTextView; 715 // Used to ignore changes to webkit text that arrives to the UI side after 716 // more key events. 717 private int mTextGeneration; 718 719 /* package */ void incrementTextGeneration() { mTextGeneration++; } 720 721 // Used by WebViewCore to create child views. 722 /* package */ final ViewManager mViewManager; 723 724 // Used to display in full screen mode 725 PluginFullScreenHolder mFullScreenHolder; 726 727 /** 728 * Position of the last touch event in pixels. 729 * Use integer to prevent loss of dragging delta calculation accuracy; 730 * which was done in float and converted to integer, and resulted in gradual 731 * and compounding touch position and view dragging mismatch. 732 */ 733 private int mLastTouchX; 734 private int mLastTouchY; 735 private int mStartTouchX; 736 private int mStartTouchY; 737 private float mAverageAngle; 738 739 /** 740 * Time of the last touch event. 741 */ 742 private long mLastTouchTime; 743 744 /** 745 * Time of the last time sending touch event to WebViewCore 746 */ 747 private long mLastSentTouchTime; 748 749 /** 750 * The minimum elapsed time before sending another ACTION_MOVE event to 751 * WebViewCore. This really should be tuned for each type of the devices. 752 * For example in Google Map api test case, it takes Dream device at least 753 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 754 * triggering the layout and drawing the picture. While the same process 755 * takes 60+ms on the current high speed device. If we make 756 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 757 * to WebViewCore queue and the real layout and draw events will be pushed 758 * to further, which slows down the refresh rate. Choose 50 to favor the 759 * current high speed devices. For Dream like devices, 100 is a better 760 * choice. Maybe make this in the buildspec later. 761 * (Update 12/14/2010: changed to 0 since current device should be able to 762 * handle the raw events and Map team voted to have the raw events too. 763 */ 764 private static final int TOUCH_SENT_INTERVAL = 0; 765 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 766 767 /** 768 * Helper class to get velocity for fling 769 */ 770 VelocityTracker mVelocityTracker; 771 private int mMaximumFling; 772 private float mLastVelocity; 773 private float mLastVelX; 774 private float mLastVelY; 775 776 // The id of the native layer being scrolled. 777 private int mCurrentScrollingLayerId; 778 private Rect mScrollingLayerRect = new Rect(); 779 780 // only trigger accelerated fling if the new velocity is at least 781 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 782 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 783 784 /** 785 * Touch mode 786 */ 787 private int mTouchMode = TOUCH_DONE_MODE; 788 private static final int TOUCH_INIT_MODE = 1; 789 private static final int TOUCH_DRAG_START_MODE = 2; 790 private static final int TOUCH_DRAG_MODE = 3; 791 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 792 private static final int TOUCH_SHORTPRESS_MODE = 5; 793 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 794 private static final int TOUCH_DONE_MODE = 7; 795 private static final int TOUCH_PINCH_DRAG = 8; 796 private static final int TOUCH_DRAG_LAYER_MODE = 9; 797 798 // Whether to forward the touch events to WebCore 799 // Can only be set by WebKit via JNI. 800 private boolean mForwardTouchEvents = false; 801 802 // Whether to prevent default during touch. The initial value depends on 803 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 804 // for touch down. Otherwise UI will wait for the answer of the first 805 // confirmed move before taking over the control. 806 private static final int PREVENT_DEFAULT_NO = 0; 807 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 808 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 809 private static final int PREVENT_DEFAULT_YES = 3; 810 private static final int PREVENT_DEFAULT_IGNORE = 4; 811 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 812 813 // true when the touch movement exceeds the slop 814 private boolean mConfirmMove; 815 816 // if true, touch events will be first processed by WebCore, if prevent 817 // default is not set, the UI will continue handle them. 818 private boolean mDeferTouchProcess; 819 820 // to avoid interfering with the current touch events, track them 821 // separately. Currently no snapping or fling in the deferred process mode 822 private int mDeferTouchMode = TOUCH_DONE_MODE; 823 private float mLastDeferTouchX; 824 private float mLastDeferTouchY; 825 826 // To keep track of whether the current drag was initiated by a WebTextView, 827 // so that we know not to hide the cursor 828 boolean mDragFromTextInput; 829 830 // Whether or not to draw the cursor ring. 831 private boolean mDrawCursorRing = true; 832 833 // true if onPause has been called (and not onResume) 834 private boolean mIsPaused; 835 836 private HitTestResult mInitialHitTestResult; 837 private WebKitHitTest mFocusedNode; 838 839 /** 840 * Customizable constant 841 */ 842 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 843 private int mTouchSlopSquare; 844 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 845 private int mDoubleTapSlopSquare; 846 // pre-computed density adjusted navigation slop 847 private int mNavSlop; 848 // This should be ViewConfiguration.getTapTimeout() 849 // But system time out is 100ms, which is too short for the browser. 850 // In the browser, if it switches out of tap too soon, jump tap won't work. 851 // In addition, a double tap on a trackpad will always have a duration of 852 // 300ms, so this value must be at least that (otherwise we will timeout the 853 // first tap and convert it to a long press). 854 private static final int TAP_TIMEOUT = 300; 855 // This should be ViewConfiguration.getLongPressTimeout() 856 // But system time out is 500ms, which is too short for the browser. 857 // With a short timeout, it's difficult to treat trigger a short press. 858 private static final int LONG_PRESS_TIMEOUT = 1000; 859 // needed to avoid flinging after a pause of no movement 860 private static final int MIN_FLING_TIME = 250; 861 // draw unfiltered after drag is held without movement 862 private static final int MOTIONLESS_TIME = 100; 863 // The amount of content to overlap between two screens when going through 864 // pages with the space bar, in pixels. 865 private static final int PAGE_SCROLL_OVERLAP = 24; 866 867 /** 868 * These prevent calling requestLayout if either dimension is fixed. This 869 * depends on the layout parameters and the measure specs. 870 */ 871 boolean mWidthCanMeasure; 872 boolean mHeightCanMeasure; 873 874 // Remember the last dimensions we sent to the native side so we can avoid 875 // sending the same dimensions more than once. 876 int mLastWidthSent; 877 int mLastHeightSent; 878 // Since view height sent to webkit could be fixed to avoid relayout, this 879 // value records the last sent actual view height. 880 int mLastActualHeightSent; 881 882 private int mContentWidth; // cache of value from WebViewCore 883 private int mContentHeight; // cache of value from WebViewCore 884 885 // Need to have the separate control for horizontal and vertical scrollbar 886 // style than the View's single scrollbar style 887 private boolean mOverlayHorizontalScrollbar = true; 888 private boolean mOverlayVerticalScrollbar = false; 889 890 // our standard speed. this way small distances will be traversed in less 891 // time than large distances, but we cap the duration, so that very large 892 // distances won't take too long to get there. 893 private static final int STD_SPEED = 480; // pixels per second 894 // time for the longest scroll animation 895 private static final int MAX_DURATION = 750; // milliseconds 896 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 897 898 // Used by OverScrollGlow 899 OverScroller mScroller; 900 901 private boolean mInOverScrollMode = false; 902 private static Paint mOverScrollBackground; 903 private static Paint mOverScrollBorder; 904 905 private boolean mWrapContent; 906 private static final int MOTIONLESS_FALSE = 0; 907 private static final int MOTIONLESS_PENDING = 1; 908 private static final int MOTIONLESS_TRUE = 2; 909 private static final int MOTIONLESS_IGNORE = 3; 910 private int mHeldMotionless; 911 912 // An instance for injecting accessibility in WebViews with disabled 913 // JavaScript or ones for which no accessibility script exists 914 private AccessibilityInjector mAccessibilityInjector; 915 916 // flag indicating if accessibility script is injected so we 917 // know to handle Shift and arrows natively first 918 private boolean mAccessibilityScriptInjected; 919 920 921 /** 922 * How long the caret handle will last without being touched. 923 */ 924 private static final long CARET_HANDLE_STAMINA_MS = 3000; 925 926 private Drawable mSelectHandleLeft; 927 private Drawable mSelectHandleRight; 928 private Drawable mSelectHandleCenter; 929 private Rect mSelectCursorBase = new Rect(); 930 private int mSelectCursorBaseLayerId; 931 private Rect mSelectCursorExtent = new Rect(); 932 private int mSelectCursorExtentLayerId; 933 private Rect mSelectDraggingCursor; 934 private Point mSelectDraggingOffset = new Point(); 935 private boolean mIsCaretSelection; 936 static final int HANDLE_ID_START = 0; 937 static final int HANDLE_ID_END = 1; 938 static final int HANDLE_ID_BASE = 2; 939 static final int HANDLE_ID_EXTENT = 3; 940 941 static boolean sDisableNavcache = false; 942 static boolean sEnableWebTextView = false; 943 // the color used to highlight the touch rectangles 944 static final int HIGHLIGHT_COLOR = 0x6633b5e5; 945 // the region indicating where the user touched on the screen 946 private Region mTouchHighlightRegion = new Region(); 947 // the paint for the touch highlight 948 private Paint mTouchHightlightPaint = new Paint(); 949 // debug only 950 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 951 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 952 private Paint mTouchCrossHairColor; 953 private int mTouchHighlightX; 954 private int mTouchHighlightY; 955 private long mTouchHighlightRequested; 956 957 // Basically this proxy is used to tell the Video to update layer tree at 958 // SetBaseLayer time and to pause when WebView paused. 959 private HTML5VideoViewProxy mHTML5VideoViewProxy; 960 961 // If we are using a set picture, don't send view updates to webkit 962 private boolean mBlockWebkitViewMessages = false; 963 964 // cached value used to determine if we need to switch drawing models 965 private boolean mHardwareAccelSkia = false; 966 967 /* 968 * Private message ids 969 */ 970 private static final int REMEMBER_PASSWORD = 1; 971 private static final int NEVER_REMEMBER_PASSWORD = 2; 972 private static final int SWITCH_TO_SHORTPRESS = 3; 973 private static final int SWITCH_TO_LONGPRESS = 4; 974 private static final int RELEASE_SINGLE_TAP = 5; 975 private static final int REQUEST_FORM_DATA = 6; 976 private static final int DRAG_HELD_MOTIONLESS = 8; 977 private static final int AWAKEN_SCROLL_BARS = 9; 978 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 979 private static final int SCROLL_SELECT_TEXT = 11; 980 981 982 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 983 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 984 985 /* 986 * Package message ids 987 */ 988 static final int SCROLL_TO_MSG_ID = 101; 989 static final int NEW_PICTURE_MSG_ID = 105; 990 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 991 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 992 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 993 static final int UPDATE_ZOOM_RANGE = 109; 994 static final int UNHANDLED_NAV_KEY = 110; 995 static final int CLEAR_TEXT_ENTRY = 111; 996 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 997 static final int SHOW_RECT_MSG_ID = 113; 998 static final int LONG_PRESS_CENTER = 114; 999 static final int PREVENT_TOUCH_ID = 115; 1000 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 1001 // obj=Rect in doc coordinates 1002 static final int INVAL_RECT_MSG_ID = 117; 1003 static final int REQUEST_KEYBOARD = 118; 1004 static final int DO_MOTION_UP = 119; 1005 static final int SHOW_FULLSCREEN = 120; 1006 static final int HIDE_FULLSCREEN = 121; 1007 static final int DOM_FOCUS_CHANGED = 122; 1008 static final int REPLACE_BASE_CONTENT = 123; 1009 static final int FORM_DID_BLUR = 124; 1010 static final int RETURN_LABEL = 125; 1011 static final int UPDATE_MATCH_COUNT = 126; 1012 static final int CENTER_FIT_RECT = 127; 1013 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 1014 static final int SET_SCROLLBAR_MODES = 129; 1015 static final int SELECTION_STRING_CHANGED = 130; 1016 static final int HIT_TEST_RESULT = 131; 1017 static final int SAVE_WEBARCHIVE_FINISHED = 132; 1018 1019 static final int SET_AUTOFILLABLE = 133; 1020 static final int AUTOFILL_COMPLETE = 134; 1021 1022 static final int SELECT_AT = 135; 1023 static final int SCREEN_ON = 136; 1024 static final int ENTER_FULLSCREEN_VIDEO = 137; 1025 static final int UPDATE_SELECTION = 138; 1026 static final int UPDATE_ZOOM_DENSITY = 139; 1027 static final int EXIT_FULLSCREEN_VIDEO = 140; 1028 1029 static final int COPY_TO_CLIPBOARD = 141; 1030 static final int INIT_EDIT_FIELD = 142; 1031 static final int REPLACE_TEXT = 143; 1032 static final int CLEAR_CARET_HANDLE = 144; 1033 1034 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 1035 private static final int LAST_PACKAGE_MSG_ID = HIT_TEST_RESULT; 1036 1037 static final String[] HandlerPrivateDebugString = { 1038 "REMEMBER_PASSWORD", // = 1; 1039 "NEVER_REMEMBER_PASSWORD", // = 2; 1040 "SWITCH_TO_SHORTPRESS", // = 3; 1041 "SWITCH_TO_LONGPRESS", // = 4; 1042 "RELEASE_SINGLE_TAP", // = 5; 1043 "REQUEST_FORM_DATA", // = 6; 1044 "RESUME_WEBCORE_PRIORITY", // = 7; 1045 "DRAG_HELD_MOTIONLESS", // = 8; 1046 "AWAKEN_SCROLL_BARS", // = 9; 1047 "PREVENT_DEFAULT_TIMEOUT", // = 10; 1048 "SCROLL_SELECT_TEXT" // = 11; 1049 }; 1050 1051 static final String[] HandlerPackageDebugString = { 1052 "SCROLL_TO_MSG_ID", // = 101; 1053 "102", // = 102; 1054 "103", // = 103; 1055 "104", // = 104; 1056 "NEW_PICTURE_MSG_ID", // = 105; 1057 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 1058 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 1059 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 1060 "UPDATE_ZOOM_RANGE", // = 109; 1061 "UNHANDLED_NAV_KEY", // = 110; 1062 "CLEAR_TEXT_ENTRY", // = 111; 1063 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 1064 "SHOW_RECT_MSG_ID", // = 113; 1065 "LONG_PRESS_CENTER", // = 114; 1066 "PREVENT_TOUCH_ID", // = 115; 1067 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 1068 "INVAL_RECT_MSG_ID", // = 117; 1069 "REQUEST_KEYBOARD", // = 118; 1070 "DO_MOTION_UP", // = 119; 1071 "SHOW_FULLSCREEN", // = 120; 1072 "HIDE_FULLSCREEN", // = 121; 1073 "DOM_FOCUS_CHANGED", // = 122; 1074 "REPLACE_BASE_CONTENT", // = 123; 1075 "FORM_DID_BLUR", // = 124; 1076 "RETURN_LABEL", // = 125; 1077 "UPDATE_MATCH_COUNT", // = 126; 1078 "CENTER_FIT_RECT", // = 127; 1079 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 1080 "SET_SCROLLBAR_MODES", // = 129; 1081 "SELECTION_STRING_CHANGED", // = 130; 1082 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 1083 "SAVE_WEBARCHIVE_FINISHED", // = 132; 1084 "SET_AUTOFILLABLE", // = 133; 1085 "AUTOFILL_COMPLETE", // = 134; 1086 "SELECT_AT", // = 135; 1087 "SCREEN_ON", // = 136; 1088 "ENTER_FULLSCREEN_VIDEO", // = 137; 1089 "UPDATE_SELECTION", // = 138; 1090 "UPDATE_ZOOM_DENSITY" // = 139; 1091 }; 1092 1093 // If the site doesn't use the viewport meta tag to specify the viewport, 1094 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 1095 static final int DEFAULT_VIEWPORT_WIDTH = 980; 1096 1097 // normally we try to fit the content to the minimum preferred width 1098 // calculated by the Webkit. To avoid the bad behavior when some site's 1099 // minimum preferred width keeps growing when changing the viewport width or 1100 // the minimum preferred width is huge, an upper limit is needed. 1101 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 1102 1103 // initial scale in percent. 0 means using default. 1104 private int mInitialScaleInPercent = 0; 1105 1106 // Whether or not a scroll event should be sent to webkit. This is only set 1107 // to false when restoring the scroll position. 1108 private boolean mSendScrollEvent = true; 1109 1110 private int mSnapScrollMode = SNAP_NONE; 1111 private static final int SNAP_NONE = 0; 1112 private static final int SNAP_LOCK = 1; // not a separate state 1113 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 1114 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 1115 private boolean mSnapPositive; 1116 1117 // keep these in sync with their counterparts in WebView.cpp 1118 private static final int DRAW_EXTRAS_NONE = 0; 1119 private static final int DRAW_EXTRAS_SELECTION = 1; 1120 private static final int DRAW_EXTRAS_CURSOR_RING = 2; 1121 1122 // keep this in sync with WebCore:ScrollbarMode in WebKit 1123 private static final int SCROLLBAR_AUTO = 0; 1124 private static final int SCROLLBAR_ALWAYSOFF = 1; 1125 // as we auto fade scrollbar, this is ignored. 1126 private static final int SCROLLBAR_ALWAYSON = 2; 1127 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 1128 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 1129 1130 // constants for determining script injection strategy 1131 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 1132 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 1133 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 1134 1135 // the alias via which accessibility JavaScript interface is exposed 1136 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 1137 1138 // Template for JavaScript that injects a screen-reader. 1139 private static final String ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE = 1140 "javascript:(function() {" + 1141 " var chooser = document.createElement('script');" + 1142 " chooser.type = 'text/javascript';" + 1143 " chooser.src = '%1s';" + 1144 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 1145 " })();"; 1146 1147 // Regular expression that matches the "axs" URL parameter. 1148 // The value of 0 means the accessibility script is opted out 1149 // The value of 1 means the accessibility script is already injected 1150 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 1151 1152 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 1153 private TextToSpeech mTextToSpeech; 1154 1155 // variable to cache the above pattern in case accessibility is enabled. 1156 private Pattern mMatchAxsUrlParameterPattern; 1157 1158 /** 1159 * Max distance to overscroll by in pixels. 1160 * This how far content can be pulled beyond its normal bounds by the user. 1161 */ 1162 private int mOverscrollDistance; 1163 1164 /** 1165 * Max distance to overfling by in pixels. 1166 * This is how far flinged content can move beyond the end of its normal bounds. 1167 */ 1168 private int mOverflingDistance; 1169 1170 private OverScrollGlow mOverScrollGlow; 1171 1172 // Used to match key downs and key ups 1173 private Vector<Integer> mKeysPressed; 1174 1175 /* package */ static boolean mLogEvent = true; 1176 1177 // for event log 1178 private long mLastTouchUpTime = 0; 1179 1180 private WebViewCore.AutoFillData mAutoFillData; 1181 1182 private static boolean sNotificationsEnabled = true; 1183 1184 /** 1185 * URI scheme for telephone number 1186 */ 1187 public static final String SCHEME_TEL = "tel:"; 1188 /** 1189 * URI scheme for email address 1190 */ 1191 public static final String SCHEME_MAILTO = "mailto:"; 1192 /** 1193 * URI scheme for map address 1194 */ 1195 public static final String SCHEME_GEO = "geo:0,0?q="; 1196 1197 private int mBackgroundColor = Color.WHITE; 1198 1199 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 1200 private int mAutoScrollX = 0; 1201 private int mAutoScrollY = 0; 1202 private int mMinAutoScrollX = 0; 1203 private int mMaxAutoScrollX = 0; 1204 private int mMinAutoScrollY = 0; 1205 private int mMaxAutoScrollY = 0; 1206 private Rect mScrollingLayerBounds = new Rect(); 1207 private boolean mSentAutoScrollMessage = false; 1208 1209 // used for serializing asynchronously handled touch events. 1210 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 1211 1212 // Used to track whether picture updating was paused due to a window focus change. 1213 private boolean mPictureUpdatePausedForFocusChange = false; 1214 1215 // Used to notify listeners of a new picture. 1216 private PictureListener mPictureListener; 1217 /** 1218 * Interface to listen for new pictures as they change. 1219 * @deprecated This interface is now obsolete. 1220 */ 1221 @Deprecated 1222 public interface PictureListener { 1223 /** 1224 * Notify the listener that the picture has changed. 1225 * @param view The WebView that owns the picture. 1226 * @param picture The new picture. 1227 * @deprecated Due to internal changes, the picture does not include 1228 * composited layers such as fixed position elements or scrollable divs. 1229 * While the PictureListener API can still be used to detect changes in 1230 * the WebView content, you are advised against its usage until a replacement 1231 * is provided in a future Android release 1232 */ 1233 @Deprecated 1234 public void onNewPicture(WebView view, Picture picture); 1235 } 1236 1237 public static class HitTestResult { 1238 /** 1239 * Default HitTestResult, where the target is unknown 1240 */ 1241 public static final int UNKNOWN_TYPE = 0; 1242 /** 1243 * @deprecated This type is no longer used. 1244 */ 1245 @Deprecated 1246 public static final int ANCHOR_TYPE = 1; 1247 /** 1248 * HitTestResult for hitting a phone number 1249 */ 1250 public static final int PHONE_TYPE = 2; 1251 /** 1252 * HitTestResult for hitting a map address 1253 */ 1254 public static final int GEO_TYPE = 3; 1255 /** 1256 * HitTestResult for hitting an email address 1257 */ 1258 public static final int EMAIL_TYPE = 4; 1259 /** 1260 * HitTestResult for hitting an HTML::img tag 1261 */ 1262 public static final int IMAGE_TYPE = 5; 1263 /** 1264 * @deprecated This type is no longer used. 1265 */ 1266 @Deprecated 1267 public static final int IMAGE_ANCHOR_TYPE = 6; 1268 /** 1269 * HitTestResult for hitting a HTML::a tag with src=http 1270 */ 1271 public static final int SRC_ANCHOR_TYPE = 7; 1272 /** 1273 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 1274 */ 1275 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 1276 /** 1277 * HitTestResult for hitting an edit text area 1278 */ 1279 public static final int EDIT_TEXT_TYPE = 9; 1280 1281 private int mType; 1282 private String mExtra; 1283 1284 HitTestResult() { 1285 mType = UNKNOWN_TYPE; 1286 } 1287 1288 private void setType(int type) { 1289 mType = type; 1290 } 1291 1292 private void setExtra(String extra) { 1293 mExtra = extra; 1294 } 1295 1296 /** 1297 * Gets the type of the hit test result. 1298 * @return See the XXX_TYPE constants defined in this class. 1299 */ 1300 public int getType() { 1301 return mType; 1302 } 1303 1304 /** 1305 * Gets additional type-dependant information about the result, see 1306 * {@link WebView#getHitTestResult()} for details. 1307 * @return may either be null or contain extra information about this result. 1308 */ 1309 public String getExtra() { 1310 return mExtra; 1311 } 1312 } 1313 1314 /** 1315 * Refer to {@link WebView#requestFocusNodeHref(Message)} for more information 1316 */ 1317 static class FocusNodeHref { 1318 static final String TITLE = "title"; 1319 static final String URL = "url"; 1320 static final String SRC = "src"; 1321 } 1322 1323 /** 1324 * Construct a new WebView with a Context object. 1325 * @param context A Context object used to access application assets. 1326 */ 1327 public WebView(Context context) { 1328 this(context, null); 1329 } 1330 1331 /** 1332 * Construct a new WebView with layout parameters. 1333 * @param context A Context object used to access application assets. 1334 * @param attrs An AttributeSet passed to our parent. 1335 */ 1336 public WebView(Context context, AttributeSet attrs) { 1337 this(context, attrs, com.android.internal.R.attr.webViewStyle); 1338 } 1339 1340 /** 1341 * Construct a new WebView with layout parameters and a default style. 1342 * @param context A Context object used to access application assets. 1343 * @param attrs An AttributeSet passed to our parent. 1344 * @param defStyle The default style resource ID. 1345 */ 1346 public WebView(Context context, AttributeSet attrs, int defStyle) { 1347 this(context, attrs, defStyle, false); 1348 } 1349 1350 /** 1351 * Construct a new WebView with layout parameters and a default style. 1352 * @param context A Context object used to access application assets. 1353 * @param attrs An AttributeSet passed to our parent. 1354 * @param defStyle The default style resource ID. 1355 * @param privateBrowsing If true the web view will be initialized in private mode. 1356 */ 1357 public WebView(Context context, AttributeSet attrs, int defStyle, 1358 boolean privateBrowsing) { 1359 this(context, attrs, defStyle, null, privateBrowsing); 1360 } 1361 1362 /** 1363 * Construct a new WebView with layout parameters, a default style and a set 1364 * of custom Javscript interfaces to be added to the WebView at initialization 1365 * time. This guarantees that these interfaces will be available when the JS 1366 * context is initialized. 1367 * @param context A Context object used to access application assets. 1368 * @param attrs An AttributeSet passed to our parent. 1369 * @param defStyle The default style resource ID. 1370 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1371 * object implementing those interfaces, as values. 1372 * @param privateBrowsing If true the web view will be initialized in private mode. 1373 * @hide This is an implementation detail. 1374 */ 1375 protected WebView(Context context, AttributeSet attrs, int defStyle, 1376 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1377 super(context, attrs, defStyle); 1378 checkThread(); 1379 1380 if (context == null) { 1381 throw new IllegalArgumentException("Invalid context argument"); 1382 } 1383 1384 // Used by the chrome stack to find application paths 1385 JniUtil.setContext(context); 1386 1387 mCallbackProxy = new CallbackProxy(context, this); 1388 mViewManager = new ViewManager(this); 1389 L10nUtils.setApplicationContext(context.getApplicationContext()); 1390 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1391 mDatabase = WebViewDatabase.getInstance(context); 1392 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1393 mZoomManager = new ZoomManager(this, mCallbackProxy); 1394 1395 /* The init method must follow the creation of certain member variables, 1396 * such as the mZoomManager. 1397 */ 1398 init(); 1399 setupPackageListener(context); 1400 setupProxyListener(context); 1401 setupTrustStorageListener(context); 1402 updateMultiTouchSupport(context); 1403 1404 if (privateBrowsing) { 1405 startPrivateBrowsing(); 1406 } 1407 1408 mAutoFillData = new WebViewCore.AutoFillData(); 1409 } 1410 1411 private static class TrustStorageListener extends BroadcastReceiver { 1412 @Override 1413 public void onReceive(Context context, Intent intent) { 1414 if (intent.getAction().equals(KeyChain.ACTION_STORAGE_CHANGED)) { 1415 handleCertTrustChanged(); 1416 } 1417 } 1418 } 1419 private static TrustStorageListener sTrustStorageListener; 1420 1421 /** 1422 * Handles update to the trust storage. 1423 */ 1424 private static void handleCertTrustChanged() { 1425 // send a message for indicating trust storage change 1426 WebViewCore.sendStaticMessage(EventHub.TRUST_STORAGE_UPDATED, null); 1427 } 1428 1429 /* 1430 * @param context This method expects this to be a valid context. 1431 */ 1432 private static void setupTrustStorageListener(Context context) { 1433 if (sTrustStorageListener != null ) { 1434 return; 1435 } 1436 IntentFilter filter = new IntentFilter(); 1437 filter.addAction(KeyChain.ACTION_STORAGE_CHANGED); 1438 sTrustStorageListener = new TrustStorageListener(); 1439 Intent current = 1440 context.getApplicationContext().registerReceiver(sTrustStorageListener, filter); 1441 if (current != null) { 1442 handleCertTrustChanged(); 1443 } 1444 } 1445 1446 private static class ProxyReceiver extends BroadcastReceiver { 1447 @Override 1448 public void onReceive(Context context, Intent intent) { 1449 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1450 handleProxyBroadcast(intent); 1451 } 1452 } 1453 } 1454 1455 /* 1456 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1457 */ 1458 private static ProxyReceiver sProxyReceiver; 1459 1460 /* 1461 * @param context This method expects this to be a valid context 1462 */ 1463 private static synchronized void setupProxyListener(Context context) { 1464 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1465 return; 1466 } 1467 IntentFilter filter = new IntentFilter(); 1468 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1469 sProxyReceiver = new ProxyReceiver(); 1470 Intent currentProxy = context.getApplicationContext().registerReceiver( 1471 sProxyReceiver, filter); 1472 if (currentProxy != null) { 1473 handleProxyBroadcast(currentProxy); 1474 } 1475 } 1476 1477 /* 1478 * @param context This method expects this to be a valid context 1479 */ 1480 private static synchronized void disableProxyListener(Context context) { 1481 if (sProxyReceiver == null) 1482 return; 1483 1484 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1485 sProxyReceiver = null; 1486 } 1487 1488 private static void handleProxyBroadcast(Intent intent) { 1489 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1490 if (proxyProperties == null || proxyProperties.getHost() == null) { 1491 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1492 return; 1493 } 1494 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1495 } 1496 1497 /* 1498 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1499 * or ACTION_PACKAGE_REMOVED. 1500 */ 1501 private static boolean sPackageInstallationReceiverAdded = false; 1502 1503 /* 1504 * A set of Google packages we monitor for the 1505 * navigator.isApplicationInstalled() API. Add additional packages as 1506 * needed. 1507 */ 1508 private static Set<String> sGoogleApps; 1509 static { 1510 sGoogleApps = new HashSet<String>(); 1511 sGoogleApps.add("com.google.android.youtube"); 1512 } 1513 1514 private static class PackageListener extends BroadcastReceiver { 1515 @Override 1516 public void onReceive(Context context, Intent intent) { 1517 final String action = intent.getAction(); 1518 final String packageName = intent.getData().getSchemeSpecificPart(); 1519 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1520 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1521 // if it is replacing, refreshPlugins() when adding 1522 return; 1523 } 1524 1525 if (sGoogleApps.contains(packageName)) { 1526 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1527 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1528 } else { 1529 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1530 } 1531 } 1532 1533 PluginManager pm = PluginManager.getInstance(context); 1534 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1535 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1536 } 1537 } 1538 } 1539 1540 private void setupPackageListener(Context context) { 1541 1542 /* 1543 * we must synchronize the instance check and the creation of the 1544 * receiver to ensure that only ONE receiver exists for all WebView 1545 * instances. 1546 */ 1547 synchronized (WebView.class) { 1548 1549 // if the receiver already exists then we do not need to register it 1550 // again 1551 if (sPackageInstallationReceiverAdded) { 1552 return; 1553 } 1554 1555 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1556 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1557 filter.addDataScheme("package"); 1558 BroadcastReceiver packageListener = new PackageListener(); 1559 context.getApplicationContext().registerReceiver(packageListener, filter); 1560 sPackageInstallationReceiverAdded = true; 1561 } 1562 1563 // check if any of the monitored apps are already installed 1564 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1565 1566 @Override 1567 protected Set<String> doInBackground(Void... unused) { 1568 Set<String> installedPackages = new HashSet<String>(); 1569 PackageManager pm = mContext.getPackageManager(); 1570 for (String name : sGoogleApps) { 1571 try { 1572 pm.getPackageInfo(name, 1573 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1574 installedPackages.add(name); 1575 } catch (PackageManager.NameNotFoundException e) { 1576 // package not found 1577 } 1578 } 1579 return installedPackages; 1580 } 1581 1582 // Executes on the UI thread 1583 @Override 1584 protected void onPostExecute(Set<String> installedPackages) { 1585 if (mWebViewCore != null) { 1586 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1587 } 1588 } 1589 }; 1590 task.execute(); 1591 } 1592 1593 void updateMultiTouchSupport(Context context) { 1594 mZoomManager.updateMultiTouchSupport(context); 1595 } 1596 1597 private void init() { 1598 OnTrimMemoryListener.init(getContext()); 1599 sDisableNavcache = nativeDisableNavcache(); 1600 setWillNotDraw(false); 1601 setFocusable(true); 1602 setFocusableInTouchMode(true); 1603 setClickable(true); 1604 setLongClickable(true); 1605 1606 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1607 int slop = configuration.getScaledTouchSlop(); 1608 mTouchSlopSquare = slop * slop; 1609 slop = configuration.getScaledDoubleTapSlop(); 1610 mDoubleTapSlopSquare = slop * slop; 1611 final float density = getContext().getResources().getDisplayMetrics().density; 1612 // use one line height, 16 based on our current default font, for how 1613 // far we allow a touch be away from the edge of a link 1614 mNavSlop = (int) (16 * density); 1615 mZoomManager.init(density); 1616 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1617 1618 // Compute the inverse of the density squared. 1619 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1620 1621 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1622 mOverflingDistance = configuration.getScaledOverflingDistance(); 1623 1624 setScrollBarStyle(super.getScrollBarStyle()); 1625 // Initially use a size of two, since the user is likely to only hold 1626 // down two keys at a time (shift + another key) 1627 mKeysPressed = new Vector<Integer>(2); 1628 mHTML5VideoViewProxy = null ; 1629 } 1630 1631 @Override 1632 public boolean shouldDelayChildPressedState() { 1633 return true; 1634 } 1635 1636 /** 1637 * Adds accessibility APIs to JavaScript. 1638 * 1639 * Note: This method is responsible to performing the necessary 1640 * check if the accessibility APIs should be exposed. 1641 */ 1642 private void addAccessibilityApisToJavaScript() { 1643 if (AccessibilityManager.getInstance(mContext).isEnabled() 1644 && getSettings().getJavaScriptEnabled()) { 1645 // exposing the TTS for now ... 1646 final Context ctx = getContext(); 1647 if (ctx != null) { 1648 final String packageName = ctx.getPackageName(); 1649 if (packageName != null) { 1650 mTextToSpeech = new TextToSpeech(getContext(), null, null, 1651 packageName + ".**webview**", true); 1652 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1653 } 1654 } 1655 } 1656 } 1657 1658 /** 1659 * Removes accessibility APIs from JavaScript. 1660 */ 1661 private void removeAccessibilityApisFromJavaScript() { 1662 // exposing the TTS for now ... 1663 if (mTextToSpeech != null) { 1664 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1665 mTextToSpeech.shutdown(); 1666 mTextToSpeech = null; 1667 } 1668 } 1669 1670 @Override 1671 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 1672 super.onInitializeAccessibilityNodeInfo(info); 1673 info.setScrollable(isScrollableForAccessibility()); 1674 } 1675 1676 @Override 1677 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 1678 super.onInitializeAccessibilityEvent(event); 1679 event.setScrollable(isScrollableForAccessibility()); 1680 event.setScrollX(mScrollX); 1681 event.setScrollY(mScrollY); 1682 final int convertedContentWidth = contentToViewX(getContentWidth()); 1683 final int adjustedViewWidth = getWidth() - mPaddingLeft - mPaddingRight; 1684 event.setMaxScrollX(Math.max(convertedContentWidth - adjustedViewWidth, 0)); 1685 final int convertedContentHeight = contentToViewY(getContentHeight()); 1686 final int adjustedViewHeight = getHeight() - mPaddingTop - mPaddingBottom; 1687 event.setMaxScrollY(Math.max(convertedContentHeight - adjustedViewHeight, 0)); 1688 } 1689 1690 private boolean isScrollableForAccessibility() { 1691 return (contentToViewX(getContentWidth()) > getWidth() - mPaddingLeft - mPaddingRight 1692 || contentToViewY(getContentHeight()) > getHeight() - mPaddingTop - mPaddingBottom); 1693 } 1694 1695 @Override 1696 public void setOverScrollMode(int mode) { 1697 super.setOverScrollMode(mode); 1698 if (mode != OVER_SCROLL_NEVER) { 1699 if (mOverScrollGlow == null) { 1700 mOverScrollGlow = new OverScrollGlow(this); 1701 } 1702 } else { 1703 mOverScrollGlow = null; 1704 } 1705 } 1706 1707 /* package */ void adjustDefaultZoomDensity(int zoomDensity) { 1708 final float density = mContext.getResources().getDisplayMetrics().density 1709 * 100 / zoomDensity; 1710 updateDefaultZoomDensity(density); 1711 } 1712 1713 /* package */ void updateDefaultZoomDensity(float density) { 1714 mNavSlop = (int) (16 * density); 1715 mZoomManager.updateDefaultZoomDensity(density); 1716 } 1717 1718 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1719 String password, final Message resumeMsg) { 1720 boolean rVal = false; 1721 if (resumeMsg == null) { 1722 // null resumeMsg implies saving password silently 1723 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1724 } else { 1725 final Message remember = mPrivateHandler.obtainMessage( 1726 REMEMBER_PASSWORD); 1727 remember.getData().putString("host", schemePlusHost); 1728 remember.getData().putString("username", username); 1729 remember.getData().putString("password", password); 1730 remember.obj = resumeMsg; 1731 1732 final Message neverRemember = mPrivateHandler.obtainMessage( 1733 NEVER_REMEMBER_PASSWORD); 1734 neverRemember.getData().putString("host", schemePlusHost); 1735 neverRemember.getData().putString("username", username); 1736 neverRemember.getData().putString("password", password); 1737 neverRemember.obj = resumeMsg; 1738 1739 new AlertDialog.Builder(getContext()) 1740 .setTitle(com.android.internal.R.string.save_password_label) 1741 .setMessage(com.android.internal.R.string.save_password_message) 1742 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1743 new DialogInterface.OnClickListener() { 1744 @Override 1745 public void onClick(DialogInterface dialog, int which) { 1746 resumeMsg.sendToTarget(); 1747 } 1748 }) 1749 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1750 new DialogInterface.OnClickListener() { 1751 @Override 1752 public void onClick(DialogInterface dialog, int which) { 1753 remember.sendToTarget(); 1754 } 1755 }) 1756 .setNegativeButton(com.android.internal.R.string.save_password_never, 1757 new DialogInterface.OnClickListener() { 1758 @Override 1759 public void onClick(DialogInterface dialog, int which) { 1760 neverRemember.sendToTarget(); 1761 } 1762 }) 1763 .setOnCancelListener(new OnCancelListener() { 1764 @Override 1765 public void onCancel(DialogInterface dialog) { 1766 resumeMsg.sendToTarget(); 1767 } 1768 }).show(); 1769 // Return true so that WebViewCore will pause while the dialog is 1770 // up. 1771 rVal = true; 1772 } 1773 return rVal; 1774 } 1775 1776 @Override 1777 public void setScrollBarStyle(int style) { 1778 if (style == View.SCROLLBARS_INSIDE_INSET 1779 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1780 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1781 } else { 1782 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1783 } 1784 super.setScrollBarStyle(style); 1785 } 1786 1787 /** 1788 * Specify whether the horizontal scrollbar has overlay style. 1789 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1790 */ 1791 public void setHorizontalScrollbarOverlay(boolean overlay) { 1792 checkThread(); 1793 mOverlayHorizontalScrollbar = overlay; 1794 } 1795 1796 /** 1797 * Specify whether the vertical scrollbar has overlay style. 1798 * @param overlay TRUE if vertical scrollbar should have overlay style. 1799 */ 1800 public void setVerticalScrollbarOverlay(boolean overlay) { 1801 checkThread(); 1802 mOverlayVerticalScrollbar = overlay; 1803 } 1804 1805 /** 1806 * Return whether horizontal scrollbar has overlay style 1807 * @return TRUE if horizontal scrollbar has overlay style. 1808 */ 1809 public boolean overlayHorizontalScrollbar() { 1810 checkThread(); 1811 return mOverlayHorizontalScrollbar; 1812 } 1813 1814 /** 1815 * Return whether vertical scrollbar has overlay style 1816 * @return TRUE if vertical scrollbar has overlay style. 1817 */ 1818 public boolean overlayVerticalScrollbar() { 1819 checkThread(); 1820 return mOverlayVerticalScrollbar; 1821 } 1822 1823 /* 1824 * Return the width of the view where the content of WebView should render 1825 * to. 1826 * Note: this can be called from WebCoreThread. 1827 */ 1828 /* package */ int getViewWidth() { 1829 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1830 return getWidth(); 1831 } else { 1832 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1833 } 1834 } 1835 1836 /** 1837 * Returns the height (in pixels) of the embedded title bar (if any). Does not care about 1838 * scrolling 1839 * @hide 1840 */ 1841 protected int getTitleHeight() { 1842 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1843 } 1844 1845 /** 1846 * Return the visible height (in pixels) of the embedded title bar (if any). 1847 * 1848 * @return This method is obsolete and always returns 0. 1849 * @deprecated This method is now obsolete. 1850 */ 1851 @Deprecated 1852 public int getVisibleTitleHeight() { 1853 // Actually, this method returns the height of the embedded title bar if one is set via the 1854 // hidden setEmbeddedTitleBar method. 1855 checkThread(); 1856 return getVisibleTitleHeightImpl(); 1857 } 1858 1859 private int getVisibleTitleHeightImpl() { 1860 // need to restrict mScrollY due to over scroll 1861 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 1862 getOverlappingActionModeHeight()); 1863 } 1864 1865 private int mCachedOverlappingActionModeHeight = -1; 1866 1867 private int getOverlappingActionModeHeight() { 1868 if (mFindCallback == null) { 1869 return 0; 1870 } 1871 if (mCachedOverlappingActionModeHeight < 0) { 1872 getGlobalVisibleRect(mGlobalVisibleRect, mGlobalVisibleOffset); 1873 mCachedOverlappingActionModeHeight = Math.max(0, 1874 mFindCallback.getActionModeGlobalBottom() - mGlobalVisibleRect.top); 1875 } 1876 return mCachedOverlappingActionModeHeight; 1877 } 1878 1879 /* 1880 * Return the height of the view where the content of WebView should render 1881 * to. Note that this excludes mTitleBar, if there is one. 1882 * Note: this can be called from WebCoreThread. 1883 */ 1884 /* package */ int getViewHeight() { 1885 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1886 } 1887 1888 int getViewHeightWithTitle() { 1889 int height = getHeight(); 1890 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1891 height -= getHorizontalScrollbarHeight(); 1892 } 1893 return height; 1894 } 1895 1896 /** 1897 * @return The SSL certificate for the main top-level page or null if 1898 * there is no certificate (the site is not secure). 1899 */ 1900 public SslCertificate getCertificate() { 1901 checkThread(); 1902 return mCertificate; 1903 } 1904 1905 /** 1906 * Sets the SSL certificate for the main top-level page. 1907 */ 1908 public void setCertificate(SslCertificate certificate) { 1909 checkThread(); 1910 if (DebugFlags.WEB_VIEW) { 1911 Log.v(LOGTAG, "setCertificate=" + certificate); 1912 } 1913 // here, the certificate can be null (if the site is not secure) 1914 mCertificate = certificate; 1915 } 1916 1917 //------------------------------------------------------------------------- 1918 // Methods called by activity 1919 //------------------------------------------------------------------------- 1920 1921 /** 1922 * Save the username and password for a particular host in the WebView's 1923 * internal database. 1924 * @param host The host that required the credentials. 1925 * @param username The username for the given host. 1926 * @param password The password for the given host. 1927 */ 1928 public void savePassword(String host, String username, String password) { 1929 checkThread(); 1930 mDatabase.setUsernamePassword(host, username, password); 1931 } 1932 1933 /** 1934 * Set the HTTP authentication credentials for a given host and realm. 1935 * 1936 * @param host The host for the credentials. 1937 * @param realm The realm for the credentials. 1938 * @param username The username for the password. If it is null, it means 1939 * password can't be saved. 1940 * @param password The password 1941 */ 1942 public void setHttpAuthUsernamePassword(String host, String realm, 1943 String username, String password) { 1944 checkThread(); 1945 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1946 } 1947 1948 /** 1949 * Retrieve the HTTP authentication username and password for a given 1950 * host & realm pair 1951 * 1952 * @param host The host for which the credentials apply. 1953 * @param realm The realm for which the credentials apply. 1954 * @return String[] if found, String[0] is username, which can be null and 1955 * String[1] is password. Return null if it can't find anything. 1956 */ 1957 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1958 checkThread(); 1959 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1960 } 1961 1962 /** 1963 * Remove Find or Select ActionModes, if active. 1964 */ 1965 private void clearActionModes() { 1966 if (mSelectCallback != null) { 1967 mSelectCallback.finish(); 1968 } 1969 if (mFindCallback != null) { 1970 mFindCallback.finish(); 1971 } 1972 } 1973 1974 /** 1975 * Called to clear state when moving from one page to another, or changing 1976 * in some other way that makes elements associated with the current page 1977 * (such as WebTextView or ActionModes) no longer relevant. 1978 */ 1979 private void clearHelpers() { 1980 clearTextEntry(); 1981 clearActionModes(); 1982 dismissFullScreenMode(); 1983 cancelSelectDialog(); 1984 } 1985 1986 private void cancelSelectDialog() { 1987 if (mListBoxDialog != null) { 1988 mListBoxDialog.cancel(); 1989 mListBoxDialog = null; 1990 } 1991 } 1992 1993 /** 1994 * Destroy the internal state of the WebView. This method should be called 1995 * after the WebView has been removed from the view system. No other 1996 * methods may be called on a WebView after destroy. 1997 */ 1998 public void destroy() { 1999 checkThread(); 2000 destroyImpl(); 2001 } 2002 2003 private void destroyImpl() { 2004 clearHelpers(); 2005 if (mListBoxDialog != null) { 2006 mListBoxDialog.dismiss(); 2007 mListBoxDialog = null; 2008 } 2009 // remove so that it doesn't cause events 2010 if (mWebTextView != null) { 2011 mWebTextView.remove(); 2012 mWebTextView = null; 2013 } 2014 if (mNativeClass != 0) nativeStopGL(); 2015 if (mWebViewCore != null) { 2016 // Set the handlers to null before destroying WebViewCore so no 2017 // more messages will be posted. 2018 mCallbackProxy.setWebViewClient(null); 2019 mCallbackProxy.setWebChromeClient(null); 2020 // Tell WebViewCore to destroy itself 2021 synchronized (this) { 2022 WebViewCore webViewCore = mWebViewCore; 2023 mWebViewCore = null; // prevent using partial webViewCore 2024 webViewCore.destroy(); 2025 } 2026 // Remove any pending messages that might not be serviced yet. 2027 mPrivateHandler.removeCallbacksAndMessages(null); 2028 mCallbackProxy.removeCallbacksAndMessages(null); 2029 // Wake up the WebCore thread just in case it is waiting for a 2030 // JavaScript dialog. 2031 synchronized (mCallbackProxy) { 2032 mCallbackProxy.notify(); 2033 } 2034 } 2035 if (mNativeClass != 0) { 2036 nativeDestroy(); 2037 mNativeClass = 0; 2038 } 2039 } 2040 2041 /** 2042 * Enables platform notifications of data state and proxy changes. 2043 * Notifications are enabled by default. 2044 * 2045 * @deprecated This method is now obsolete. 2046 */ 2047 @Deprecated 2048 public static void enablePlatformNotifications() { 2049 checkThread(); 2050 synchronized (WebView.class) { 2051 sNotificationsEnabled = true; 2052 Context context = JniUtil.getContext(); 2053 if (context != null) 2054 setupProxyListener(context); 2055 } 2056 } 2057 2058 /** 2059 * Disables platform notifications of data state and proxy changes. 2060 * Notifications are enabled by default. 2061 * 2062 * @deprecated This method is now obsolete. 2063 */ 2064 @Deprecated 2065 public static void disablePlatformNotifications() { 2066 checkThread(); 2067 synchronized (WebView.class) { 2068 sNotificationsEnabled = false; 2069 Context context = JniUtil.getContext(); 2070 if (context != null) 2071 disableProxyListener(context); 2072 } 2073 } 2074 2075 /** 2076 * Sets JavaScript engine flags. 2077 * 2078 * @param flags JS engine flags in a String 2079 * 2080 * @hide This is an implementation detail. 2081 */ 2082 public void setJsFlags(String flags) { 2083 checkThread(); 2084 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 2085 } 2086 2087 /** 2088 * Inform WebView of the network state. This is used to set 2089 * the JavaScript property window.navigator.isOnline and 2090 * generates the online/offline event as specified in HTML5, sec. 5.7.7 2091 * @param networkUp boolean indicating if network is available 2092 */ 2093 public void setNetworkAvailable(boolean networkUp) { 2094 checkThread(); 2095 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 2096 networkUp ? 1 : 0, 0); 2097 } 2098 2099 /** 2100 * Inform WebView about the current network type. 2101 * {@hide} 2102 */ 2103 public void setNetworkType(String type, String subtype) { 2104 checkThread(); 2105 Map<String, String> map = new HashMap<String, String>(); 2106 map.put("type", type); 2107 map.put("subtype", subtype); 2108 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 2109 } 2110 /** 2111 * Save the state of this WebView used in 2112 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 2113 * method no longer stores the display data for this WebView. The previous 2114 * behavior could potentially leak files if {@link #restoreState} was never 2115 * called. See {@link #savePicture} and {@link #restorePicture} for saving 2116 * and restoring the display data. 2117 * @param outState The Bundle to store the WebView state. 2118 * @return The same copy of the back/forward list used to save the state. If 2119 * saveState fails, the returned list will be null. 2120 * @see #savePicture 2121 * @see #restorePicture 2122 */ 2123 public WebBackForwardList saveState(Bundle outState) { 2124 checkThread(); 2125 if (outState == null) { 2126 return null; 2127 } 2128 // We grab a copy of the back/forward list because a client of WebView 2129 // may have invalidated the history list by calling clearHistory. 2130 WebBackForwardList list = copyBackForwardList(); 2131 final int currentIndex = list.getCurrentIndex(); 2132 final int size = list.getSize(); 2133 // We should fail saving the state if the list is empty or the index is 2134 // not in a valid range. 2135 if (currentIndex < 0 || currentIndex >= size || size == 0) { 2136 return null; 2137 } 2138 outState.putInt("index", currentIndex); 2139 // FIXME: This should just be a byte[][] instead of ArrayList but 2140 // Parcel.java does not have the code to handle multi-dimensional 2141 // arrays. 2142 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 2143 for (int i = 0; i < size; i++) { 2144 WebHistoryItem item = list.getItemAtIndex(i); 2145 if (null == item) { 2146 // FIXME: this shouldn't happen 2147 // need to determine how item got set to null 2148 Log.w(LOGTAG, "saveState: Unexpected null history item."); 2149 return null; 2150 } 2151 byte[] data = item.getFlattenedData(); 2152 if (data == null) { 2153 // It would be very odd to not have any data for a given history 2154 // item. And we will fail to rebuild the history list without 2155 // flattened data. 2156 return null; 2157 } 2158 history.add(data); 2159 } 2160 outState.putSerializable("history", history); 2161 if (mCertificate != null) { 2162 outState.putBundle("certificate", 2163 SslCertificate.saveState(mCertificate)); 2164 } 2165 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 2166 mZoomManager.saveZoomState(outState); 2167 return list; 2168 } 2169 2170 /** 2171 * Save the current display data to the Bundle given. Used in conjunction 2172 * with {@link #saveState}. 2173 * @param b A Bundle to store the display data. 2174 * @param dest The file to store the serialized picture data. Will be 2175 * overwritten with this WebView's picture data. 2176 * @return True if the picture was successfully saved. 2177 * @deprecated This method is now obsolete. 2178 */ 2179 @Deprecated 2180 public boolean savePicture(Bundle b, final File dest) { 2181 checkThread(); 2182 if (dest == null || b == null) { 2183 return false; 2184 } 2185 final Picture p = capturePicture(); 2186 // Use a temporary file while writing to ensure the destination file 2187 // contains valid data. 2188 final File temp = new File(dest.getPath() + ".writing"); 2189 new Thread(new Runnable() { 2190 @Override 2191 public void run() { 2192 FileOutputStream out = null; 2193 try { 2194 out = new FileOutputStream(temp); 2195 p.writeToStream(out); 2196 // Writing the picture succeeded, rename the temporary file 2197 // to the destination. 2198 temp.renameTo(dest); 2199 } catch (Exception e) { 2200 // too late to do anything about it. 2201 } finally { 2202 if (out != null) { 2203 try { 2204 out.close(); 2205 } catch (Exception e) { 2206 // Can't do anything about that 2207 } 2208 } 2209 temp.delete(); 2210 } 2211 } 2212 }).start(); 2213 // now update the bundle 2214 b.putInt("scrollX", mScrollX); 2215 b.putInt("scrollY", mScrollY); 2216 mZoomManager.saveZoomState(b); 2217 return true; 2218 } 2219 2220 private void restoreHistoryPictureFields(Picture p, Bundle b) { 2221 int sx = b.getInt("scrollX", 0); 2222 int sy = b.getInt("scrollY", 0); 2223 2224 mDrawHistory = true; 2225 mHistoryPicture = p; 2226 2227 mScrollX = sx; 2228 mScrollY = sy; 2229 mZoomManager.restoreZoomState(b); 2230 final float scale = mZoomManager.getScale(); 2231 mHistoryWidth = Math.round(p.getWidth() * scale); 2232 mHistoryHeight = Math.round(p.getHeight() * scale); 2233 2234 invalidate(); 2235 } 2236 2237 /** 2238 * Restore the display data that was save in {@link #savePicture}. Used in 2239 * conjunction with {@link #restoreState}. 2240 * 2241 * Note that this will not work if the WebView is hardware accelerated. 2242 * @param b A Bundle containing the saved display data. 2243 * @param src The file where the picture data was stored. 2244 * @return True if the picture was successfully restored. 2245 * @deprecated This method is now obsolete. 2246 */ 2247 @Deprecated 2248 public boolean restorePicture(Bundle b, File src) { 2249 checkThread(); 2250 if (src == null || b == null) { 2251 return false; 2252 } 2253 if (!src.exists()) { 2254 return false; 2255 } 2256 try { 2257 final FileInputStream in = new FileInputStream(src); 2258 final Bundle copy = new Bundle(b); 2259 new Thread(new Runnable() { 2260 @Override 2261 public void run() { 2262 try { 2263 final Picture p = Picture.createFromStream(in); 2264 if (p != null) { 2265 // Post a runnable on the main thread to update the 2266 // history picture fields. 2267 mPrivateHandler.post(new Runnable() { 2268 @Override 2269 public void run() { 2270 restoreHistoryPictureFields(p, copy); 2271 } 2272 }); 2273 } 2274 } finally { 2275 try { 2276 in.close(); 2277 } catch (Exception e) { 2278 // Nothing we can do now. 2279 } 2280 } 2281 } 2282 }).start(); 2283 } catch (FileNotFoundException e){ 2284 e.printStackTrace(); 2285 } 2286 return true; 2287 } 2288 2289 /** 2290 * Saves the view data to the output stream. The output is highly 2291 * version specific, and may not be able to be loaded by newer versions 2292 * of WebView. 2293 * @param stream The {@link OutputStream} to save to 2294 * @return True if saved successfully 2295 * @hide 2296 */ 2297 public boolean saveViewState(OutputStream stream) { 2298 try { 2299 return ViewStateSerializer.serializeViewState(stream, this); 2300 } catch (IOException e) { 2301 Log.w(LOGTAG, "Failed to saveViewState", e); 2302 } 2303 return false; 2304 } 2305 2306 /** 2307 * Loads the view data from the input stream. See 2308 * {@link #saveViewState(OutputStream)} for more information. 2309 * @param stream The {@link InputStream} to load from 2310 * @return True if loaded successfully 2311 * @hide 2312 */ 2313 public boolean loadViewState(InputStream stream) { 2314 try { 2315 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 2316 mBlockWebkitViewMessages = true; 2317 setNewPicture(mLoadedPicture, true); 2318 mLoadedPicture.mViewState = null; 2319 return true; 2320 } catch (IOException e) { 2321 Log.w(LOGTAG, "Failed to loadViewState", e); 2322 } 2323 return false; 2324 } 2325 2326 /** 2327 * Clears the view state set with {@link #loadViewState(InputStream)}. 2328 * This WebView will then switch to showing the content from webkit 2329 * @hide 2330 */ 2331 public void clearViewState() { 2332 mBlockWebkitViewMessages = false; 2333 mLoadedPicture = null; 2334 invalidate(); 2335 } 2336 2337 /** 2338 * Restore the state of this WebView from the given map used in 2339 * {@link android.app.Activity#onRestoreInstanceState}. This method should 2340 * be called to restore the state of the WebView before using the object. If 2341 * it is called after the WebView has had a chance to build state (load 2342 * pages, create a back/forward list, etc.) there may be undesirable 2343 * side-effects. Please note that this method no longer restores the 2344 * display data for this WebView. See {@link #savePicture} and {@link 2345 * #restorePicture} for saving and restoring the display data. 2346 * @param inState The incoming Bundle of state. 2347 * @return The restored back/forward list or null if restoreState failed. 2348 * @see #savePicture 2349 * @see #restorePicture 2350 */ 2351 public WebBackForwardList restoreState(Bundle inState) { 2352 checkThread(); 2353 WebBackForwardList returnList = null; 2354 if (inState == null) { 2355 return returnList; 2356 } 2357 if (inState.containsKey("index") && inState.containsKey("history")) { 2358 mCertificate = SslCertificate.restoreState( 2359 inState.getBundle("certificate")); 2360 2361 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 2362 final int index = inState.getInt("index"); 2363 // We can't use a clone of the list because we need to modify the 2364 // shared copy, so synchronize instead to prevent concurrent 2365 // modifications. 2366 synchronized (list) { 2367 final List<byte[]> history = 2368 (List<byte[]>) inState.getSerializable("history"); 2369 final int size = history.size(); 2370 // Check the index bounds so we don't crash in native code while 2371 // restoring the history index. 2372 if (index < 0 || index >= size) { 2373 return null; 2374 } 2375 for (int i = 0; i < size; i++) { 2376 byte[] data = history.remove(0); 2377 if (data == null) { 2378 // If we somehow have null data, we cannot reconstruct 2379 // the item and thus our history list cannot be rebuilt. 2380 return null; 2381 } 2382 WebHistoryItem item = new WebHistoryItem(data); 2383 list.addHistoryItem(item); 2384 } 2385 // Grab the most recent copy to return to the caller. 2386 returnList = copyBackForwardList(); 2387 // Update the copy to have the correct index. 2388 returnList.setCurrentIndex(index); 2389 } 2390 // Restore private browsing setting. 2391 if (inState.getBoolean("privateBrowsingEnabled")) { 2392 getSettings().setPrivateBrowsingEnabled(true); 2393 } 2394 mZoomManager.restoreZoomState(inState); 2395 // Remove all pending messages because we are restoring previous 2396 // state. 2397 mWebViewCore.removeMessages(); 2398 // Send a restore state message. 2399 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 2400 } 2401 return returnList; 2402 } 2403 2404 /** 2405 * Load the given URL with the specified additional HTTP headers. 2406 * @param url The URL of the resource to load. 2407 * @param additionalHttpHeaders The additional headers to be used in the 2408 * HTTP request for this URL, specified as a map from name to 2409 * value. Note that if this map contains any of the headers 2410 * that are set by default by the WebView, such as those 2411 * controlling caching, accept types or the User-Agent, their 2412 * values may be overriden by the WebView's defaults. 2413 */ 2414 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 2415 checkThread(); 2416 loadUrlImpl(url, additionalHttpHeaders); 2417 } 2418 2419 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 2420 switchOutDrawHistory(); 2421 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 2422 arg.mUrl = url; 2423 arg.mExtraHeaders = extraHeaders; 2424 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 2425 clearHelpers(); 2426 } 2427 2428 /** 2429 * Load the given URL. 2430 * @param url The URL of the resource to load. 2431 */ 2432 public void loadUrl(String url) { 2433 checkThread(); 2434 loadUrlImpl(url); 2435 } 2436 2437 private void loadUrlImpl(String url) { 2438 if (url == null) { 2439 return; 2440 } 2441 loadUrlImpl(url, null); 2442 } 2443 2444 /** 2445 * Load the url with postData using "POST" method into the WebView. If url 2446 * is not a network url, it will be loaded with {link 2447 * {@link #loadUrl(String)} instead. 2448 * 2449 * @param url The url of the resource to load. 2450 * @param postData The data will be passed to "POST" request. 2451 */ 2452 public void postUrl(String url, byte[] postData) { 2453 checkThread(); 2454 if (URLUtil.isNetworkUrl(url)) { 2455 switchOutDrawHistory(); 2456 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2457 arg.mUrl = url; 2458 arg.mPostData = postData; 2459 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2460 clearHelpers(); 2461 } else { 2462 loadUrlImpl(url); 2463 } 2464 } 2465 2466 /** 2467 * Load the given data into the WebView using a 'data' scheme URL. 2468 * <p> 2469 * Note that JavaScript's same origin policy means that script running in a 2470 * page loaded using this method will be unable to access content loaded 2471 * using any scheme other than 'data', including 'http(s)'. To avoid this 2472 * restriction, use {@link 2473 * #loadDataWithBaseURL(String,String,String,String,String) 2474 * loadDataWithBaseURL()} with an appropriate base URL. 2475 * <p> 2476 * If the value of the encoding parameter is 'base64', then the data must 2477 * be encoded as base64. Otherwise, the data must use ASCII encoding for 2478 * octets inside the range of safe URL characters and use the standard %xx 2479 * hex encoding of URLs for octets outside that range. For example, 2480 * '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively. 2481 * <p> 2482 * The 'data' scheme URL formed by this method uses the default US-ASCII 2483 * charset. If you need need to set a different charset, you should form a 2484 * 'data' scheme URL which explicitly specifies a charset parameter in the 2485 * mediatype portion of the URL and call {@link #loadUrl(String)} instead. 2486 * Note that the charset obtained from the mediatype portion of a data URL 2487 * always overrides that specified in the HTML or XML document itself. 2488 * @param data A String of data in the given encoding. 2489 * @param mimeType The MIME type of the data, e.g. 'text/html'. 2490 * @param encoding The encoding of the data. 2491 */ 2492 public void loadData(String data, String mimeType, String encoding) { 2493 checkThread(); 2494 loadDataImpl(data, mimeType, encoding); 2495 } 2496 2497 private void loadDataImpl(String data, String mimeType, String encoding) { 2498 StringBuilder dataUrl = new StringBuilder("data:"); 2499 dataUrl.append(mimeType); 2500 if ("base64".equals(encoding)) { 2501 dataUrl.append(";base64"); 2502 } 2503 dataUrl.append(","); 2504 dataUrl.append(data); 2505 loadUrlImpl(dataUrl.toString()); 2506 } 2507 2508 /** 2509 * Load the given data into the WebView, using baseUrl as the base URL for 2510 * the content. The base URL is used both to resolve relative URLs and when 2511 * applying JavaScript's same origin policy. The historyUrl is used for the 2512 * history entry. 2513 * <p> 2514 * Note that content specified in this way can access local device files 2515 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2516 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2517 * <p> 2518 * If the base URL uses the data scheme, this method is equivalent to 2519 * calling {@link #loadData(String,String,String) loadData()} and the 2520 * historyUrl is ignored. 2521 * @param baseUrl URL to use as the page's base URL. If null defaults to 2522 * 'about:blank' 2523 * @param data A String of data in the given encoding. 2524 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2525 * defaults to 'text/html'. 2526 * @param encoding The encoding of the data. 2527 * @param historyUrl URL to use as the history entry, if null defaults to 2528 * 'about:blank'. 2529 */ 2530 public void loadDataWithBaseURL(String baseUrl, String data, 2531 String mimeType, String encoding, String historyUrl) { 2532 checkThread(); 2533 2534 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2535 loadDataImpl(data, mimeType, encoding); 2536 return; 2537 } 2538 switchOutDrawHistory(); 2539 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2540 arg.mBaseUrl = baseUrl; 2541 arg.mData = data; 2542 arg.mMimeType = mimeType; 2543 arg.mEncoding = encoding; 2544 arg.mHistoryUrl = historyUrl; 2545 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2546 clearHelpers(); 2547 } 2548 2549 /** 2550 * Saves the current view as a web archive. 2551 * 2552 * @param filename The filename where the archive should be placed. 2553 */ 2554 public void saveWebArchive(String filename) { 2555 checkThread(); 2556 saveWebArchiveImpl(filename, false, null); 2557 } 2558 2559 /* package */ static class SaveWebArchiveMessage { 2560 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2561 mBasename = basename; 2562 mAutoname = autoname; 2563 mCallback = callback; 2564 } 2565 2566 /* package */ final String mBasename; 2567 /* package */ final boolean mAutoname; 2568 /* package */ final ValueCallback<String> mCallback; 2569 /* package */ String mResultFile; 2570 } 2571 2572 /** 2573 * Saves the current view as a web archive. 2574 * 2575 * @param basename The filename where the archive should be placed. 2576 * @param autoname If false, takes basename to be a file. If true, basename 2577 * is assumed to be a directory in which a filename will be 2578 * chosen according to the url of the current page. 2579 * @param callback Called after the web archive has been saved. The 2580 * parameter for onReceiveValue will either be the filename 2581 * under which the file was saved, or null if saving the 2582 * file failed. 2583 */ 2584 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2585 checkThread(); 2586 saveWebArchiveImpl(basename, autoname, callback); 2587 } 2588 2589 private void saveWebArchiveImpl(String basename, boolean autoname, 2590 ValueCallback<String> callback) { 2591 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2592 new SaveWebArchiveMessage(basename, autoname, callback)); 2593 } 2594 2595 /** 2596 * Stop the current load. 2597 */ 2598 public void stopLoading() { 2599 checkThread(); 2600 // TODO: should we clear all the messages in the queue before sending 2601 // STOP_LOADING? 2602 switchOutDrawHistory(); 2603 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2604 } 2605 2606 /** 2607 * Reload the current url. 2608 */ 2609 public void reload() { 2610 checkThread(); 2611 clearHelpers(); 2612 switchOutDrawHistory(); 2613 mWebViewCore.sendMessage(EventHub.RELOAD); 2614 } 2615 2616 /** 2617 * Return true if this WebView has a back history item. 2618 * @return True iff this WebView has a back history item. 2619 */ 2620 public boolean canGoBack() { 2621 checkThread(); 2622 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2623 synchronized (l) { 2624 if (l.getClearPending()) { 2625 return false; 2626 } else { 2627 return l.getCurrentIndex() > 0; 2628 } 2629 } 2630 } 2631 2632 /** 2633 * Go back in the history of this WebView. 2634 */ 2635 public void goBack() { 2636 checkThread(); 2637 goBackOrForwardImpl(-1); 2638 } 2639 2640 /** 2641 * Return true if this WebView has a forward history item. 2642 * @return True iff this Webview has a forward history item. 2643 */ 2644 public boolean canGoForward() { 2645 checkThread(); 2646 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2647 synchronized (l) { 2648 if (l.getClearPending()) { 2649 return false; 2650 } else { 2651 return l.getCurrentIndex() < l.getSize() - 1; 2652 } 2653 } 2654 } 2655 2656 /** 2657 * Go forward in the history of this WebView. 2658 */ 2659 public void goForward() { 2660 checkThread(); 2661 goBackOrForwardImpl(1); 2662 } 2663 2664 /** 2665 * Return true if the page can go back or forward the given 2666 * number of steps. 2667 * @param steps The negative or positive number of steps to move the 2668 * history. 2669 */ 2670 public boolean canGoBackOrForward(int steps) { 2671 checkThread(); 2672 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2673 synchronized (l) { 2674 if (l.getClearPending()) { 2675 return false; 2676 } else { 2677 int newIndex = l.getCurrentIndex() + steps; 2678 return newIndex >= 0 && newIndex < l.getSize(); 2679 } 2680 } 2681 } 2682 2683 /** 2684 * Go to the history item that is the number of steps away from 2685 * the current item. Steps is negative if backward and positive 2686 * if forward. 2687 * @param steps The number of steps to take back or forward in the back 2688 * forward list. 2689 */ 2690 public void goBackOrForward(int steps) { 2691 checkThread(); 2692 goBackOrForwardImpl(steps); 2693 } 2694 2695 private void goBackOrForwardImpl(int steps) { 2696 goBackOrForward(steps, false); 2697 } 2698 2699 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2700 if (steps != 0) { 2701 clearHelpers(); 2702 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2703 ignoreSnapshot ? 1 : 0); 2704 } 2705 } 2706 2707 /** 2708 * Returns true if private browsing is enabled in this WebView. 2709 */ 2710 public boolean isPrivateBrowsingEnabled() { 2711 checkThread(); 2712 return getSettings().isPrivateBrowsingEnabled(); 2713 } 2714 2715 private void startPrivateBrowsing() { 2716 getSettings().setPrivateBrowsingEnabled(true); 2717 } 2718 2719 private boolean extendScroll(int y) { 2720 int finalY = mScroller.getFinalY(); 2721 int newY = pinLocY(finalY + y); 2722 if (newY == finalY) return false; 2723 mScroller.setFinalY(newY); 2724 mScroller.extendDuration(computeDuration(0, y)); 2725 return true; 2726 } 2727 2728 /** 2729 * Scroll the contents of the view up by half the view size 2730 * @param top true to jump to the top of the page 2731 * @return true if the page was scrolled 2732 */ 2733 public boolean pageUp(boolean top) { 2734 checkThread(); 2735 if (mNativeClass == 0) { 2736 return false; 2737 } 2738 nativeClearCursor(); // start next trackball movement from page edge 2739 if (top) { 2740 // go to the top of the document 2741 return pinScrollTo(mScrollX, 0, true, 0); 2742 } 2743 // Page up 2744 int h = getHeight(); 2745 int y; 2746 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2747 y = -h + PAGE_SCROLL_OVERLAP; 2748 } else { 2749 y = -h / 2; 2750 } 2751 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2752 : extendScroll(y); 2753 } 2754 2755 /** 2756 * Scroll the contents of the view down by half the page size 2757 * @param bottom true to jump to bottom of page 2758 * @return true if the page was scrolled 2759 */ 2760 public boolean pageDown(boolean bottom) { 2761 checkThread(); 2762 if (mNativeClass == 0) { 2763 return false; 2764 } 2765 nativeClearCursor(); // start next trackball movement from page edge 2766 if (bottom) { 2767 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2768 } 2769 // Page down. 2770 int h = getHeight(); 2771 int y; 2772 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2773 y = h - PAGE_SCROLL_OVERLAP; 2774 } else { 2775 y = h / 2; 2776 } 2777 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2778 : extendScroll(y); 2779 } 2780 2781 /** 2782 * Clear the view so that onDraw() will draw nothing but white background, 2783 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2784 */ 2785 public void clearView() { 2786 checkThread(); 2787 mContentWidth = 0; 2788 mContentHeight = 0; 2789 setBaseLayer(0, null, false, false); 2790 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2791 } 2792 2793 /** 2794 * Return a new picture that captures the current display of the webview. 2795 * This is a copy of the display, and will be unaffected if the webview 2796 * later loads a different URL. 2797 * 2798 * @return a picture containing the current contents of the view. Note this 2799 * picture is of the entire document, and is not restricted to the 2800 * bounds of the view. 2801 */ 2802 public Picture capturePicture() { 2803 checkThread(); 2804 if (mNativeClass == 0) return null; 2805 Picture result = new Picture(); 2806 nativeCopyBaseContentToPicture(result); 2807 return result; 2808 } 2809 2810 /** 2811 * Return true if the browser is displaying a TextView for text input. 2812 */ 2813 private boolean inEditingMode() { 2814 return mWebTextView != null && mWebTextView.getParent() != null; 2815 } 2816 2817 /** 2818 * Remove the WebTextView. 2819 */ 2820 private void clearTextEntry() { 2821 if (inEditingMode()) { 2822 mWebTextView.remove(); 2823 } else { 2824 // The keyboard may be open with the WebView as the served view 2825 hideSoftKeyboard(); 2826 } 2827 } 2828 2829 /** 2830 * Return the current scale of the WebView 2831 * @return The current scale. 2832 */ 2833 public float getScale() { 2834 checkThread(); 2835 return mZoomManager.getScale(); 2836 } 2837 2838 /** 2839 * Compute the reading level scale of the WebView 2840 * @param scale The current scale. 2841 * @return The reading level scale. 2842 */ 2843 /*package*/ float computeReadingLevelScale(float scale) { 2844 return mZoomManager.computeReadingLevelScale(scale); 2845 } 2846 2847 /** 2848 * Set the initial scale for the WebView. 0 means default. If 2849 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2850 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2851 * WebView starts with this value as initial scale. 2852 * Please note that unlike the scale properties in the viewport meta tag, 2853 * this method doesn't take the screen density into account. 2854 * 2855 * @param scaleInPercent The initial scale in percent. 2856 */ 2857 public void setInitialScale(int scaleInPercent) { 2858 checkThread(); 2859 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2860 } 2861 2862 /** 2863 * Invoke the graphical zoom picker widget for this WebView. This will 2864 * result in the zoom widget appearing on the screen to control the zoom 2865 * level of this WebView. 2866 */ 2867 public void invokeZoomPicker() { 2868 checkThread(); 2869 if (!getSettings().supportZoom()) { 2870 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2871 return; 2872 } 2873 clearHelpers(); 2874 mZoomManager.invokeZoomPicker(); 2875 } 2876 2877 /** 2878 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2879 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2880 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2881 * anchor does not have a url or if it is a JavaScript url, the type will 2882 * be UNKNOWN_TYPE and the url has to be retrieved through 2883 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2884 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2885 * the "extra" field. A type of 2886 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2887 * a child node. If a phone number is found, the HitTestResult type is set 2888 * to PHONE_TYPE and the phone number is set in the "extra" field of 2889 * HitTestResult. If a map address is found, the HitTestResult type is set 2890 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2891 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2892 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2893 * HitTestResult type is set to UNKNOWN_TYPE. 2894 */ 2895 public HitTestResult getHitTestResult() { 2896 checkThread(); 2897 return hitTestResult(mInitialHitTestResult); 2898 } 2899 2900 private HitTestResult hitTestResult(HitTestResult fallback) { 2901 if (mNativeClass == 0 || sDisableNavcache) { 2902 return fallback; 2903 } 2904 2905 HitTestResult result = new HitTestResult(); 2906 if (nativeHasCursorNode()) { 2907 if (nativeCursorIsTextInput()) { 2908 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2909 } else { 2910 String text = nativeCursorText(); 2911 if (text != null) { 2912 if (text.startsWith(SCHEME_TEL)) { 2913 result.setType(HitTestResult.PHONE_TYPE); 2914 result.setExtra(URLDecoder.decode(text 2915 .substring(SCHEME_TEL.length()))); 2916 } else if (text.startsWith(SCHEME_MAILTO)) { 2917 result.setType(HitTestResult.EMAIL_TYPE); 2918 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2919 } else if (text.startsWith(SCHEME_GEO)) { 2920 result.setType(HitTestResult.GEO_TYPE); 2921 result.setExtra(URLDecoder.decode(text 2922 .substring(SCHEME_GEO.length()))); 2923 } else if (nativeCursorIsAnchor()) { 2924 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2925 result.setExtra(text); 2926 } 2927 } 2928 } 2929 } else if (fallback != null) { 2930 /* If webkit causes a rebuild while the long press is in progress, 2931 * the cursor node may be reset, even if it is still around. This 2932 * uses the cursor node saved when the touch began. Since the 2933 * nativeImageURI below only changes the result if it is successful, 2934 * this uses the data beneath the touch if available or the original 2935 * tap data otherwise. 2936 */ 2937 Log.v(LOGTAG, "hitTestResult use fallback"); 2938 result = fallback; 2939 } 2940 int type = result.getType(); 2941 if (type == HitTestResult.UNKNOWN_TYPE 2942 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2943 // Now check to see if it is an image. 2944 int contentX = viewToContentX(mLastTouchX + mScrollX); 2945 int contentY = viewToContentY(mLastTouchY + mScrollY); 2946 String text = nativeImageURI(contentX, contentY); 2947 if (text != null) { 2948 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2949 HitTestResult.IMAGE_TYPE : 2950 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2951 result.setExtra(text); 2952 } 2953 } 2954 return result; 2955 } 2956 2957 int getBlockLeftEdge(int x, int y, float readingScale) { 2958 if (!sDisableNavcache) { 2959 return nativeGetBlockLeftEdge(x, y, readingScale); 2960 } 2961 2962 float invReadingScale = 1.0f / readingScale; 2963 int readingWidth = (int) (getViewWidth() * invReadingScale); 2964 int left = NO_LEFTEDGE; 2965 if (mFocusedNode != null) { 2966 final int length = mFocusedNode.mEnclosingParentRects.length; 2967 for (int i = 0; i < length; i++) { 2968 Rect rect = mFocusedNode.mEnclosingParentRects[i]; 2969 if (rect.width() < mFocusedNode.mHitTestSlop) { 2970 // ignore bounding boxes that are too small 2971 continue; 2972 } else if (left != NO_LEFTEDGE && rect.width() > readingWidth) { 2973 // stop when bounding box doesn't fit the screen width 2974 // at reading scale 2975 break; 2976 } 2977 2978 left = rect.left; 2979 } 2980 } 2981 2982 return left; 2983 } 2984 2985 // Called by JNI when the DOM has changed the focus. Clear the focus so 2986 // that new keys will go to the newly focused field 2987 private void domChangedFocus() { 2988 if (inEditingMode()) { 2989 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2990 } 2991 } 2992 /** 2993 * Request the anchor or image element URL at the last tapped point. 2994 * If hrefMsg is null, this method returns immediately and does not 2995 * dispatch hrefMsg to its target. If the tapped point hits an image, 2996 * an anchor, or an image in an anchor, the message associates 2997 * strings in named keys in its data. The value paired with the key 2998 * may be an empty string. 2999 * 3000 * @param hrefMsg This message will be dispatched with the result of the 3001 * request. The message data contains three keys: 3002 * - "url" returns the anchor's href attribute. 3003 * - "title" returns the anchor's text. 3004 * - "src" returns the image's src attribute. 3005 */ 3006 public void requestFocusNodeHref(Message hrefMsg) { 3007 checkThread(); 3008 if (hrefMsg == null) { 3009 return; 3010 } 3011 int contentX = viewToContentX(mLastTouchX + mScrollX); 3012 int contentY = viewToContentY(mLastTouchY + mScrollY); 3013 if (mFocusedNode != null && mFocusedNode.mHitTestX == contentX 3014 && mFocusedNode.mHitTestY == contentY) { 3015 hrefMsg.getData().putString(FocusNodeHref.URL, mFocusedNode.mLinkUrl); 3016 hrefMsg.getData().putString(FocusNodeHref.TITLE, mFocusedNode.mAnchorText); 3017 hrefMsg.getData().putString(FocusNodeHref.SRC, mFocusedNode.mImageUrl); 3018 hrefMsg.sendToTarget(); 3019 return; 3020 } 3021 if (nativeHasCursorNode()) { 3022 Rect cursorBounds = nativeGetCursorRingBounds(); 3023 if (!cursorBounds.contains(contentX, contentY)) { 3024 int slop = viewToContentDimension(mNavSlop); 3025 cursorBounds.inset(-slop, -slop); 3026 if (cursorBounds.contains(contentX, contentY)) { 3027 contentX = cursorBounds.centerX(); 3028 contentY = cursorBounds.centerY(); 3029 } 3030 } 3031 } 3032 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 3033 contentX, contentY, hrefMsg); 3034 } 3035 3036 /** 3037 * Request the url of the image last touched by the user. msg will be sent 3038 * to its target with a String representing the url as its object. 3039 * 3040 * @param msg This message will be dispatched with the result of the request 3041 * as the data member with "url" as key. The result can be null. 3042 */ 3043 public void requestImageRef(Message msg) { 3044 checkThread(); 3045 if (0 == mNativeClass) return; // client isn't initialized 3046 int contentX = viewToContentX(mLastTouchX + mScrollX); 3047 int contentY = viewToContentY(mLastTouchY + mScrollY); 3048 String ref = nativeImageURI(contentX, contentY); 3049 Bundle data = msg.getData(); 3050 data.putString("url", ref); 3051 msg.setData(data); 3052 msg.sendToTarget(); 3053 } 3054 3055 static int pinLoc(int x, int viewMax, int docMax) { 3056// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 3057 if (docMax < viewMax) { // the doc has room on the sides for "blank" 3058 // pin the short document to the top/left of the screen 3059 x = 0; 3060// Log.d(LOGTAG, "--- center " + x); 3061 } else if (x < 0) { 3062 x = 0; 3063// Log.d(LOGTAG, "--- zero"); 3064 } else if (x + viewMax > docMax) { 3065 x = docMax - viewMax; 3066// Log.d(LOGTAG, "--- pin " + x); 3067 } 3068 return x; 3069 } 3070 3071 // Expects x in view coordinates 3072 int pinLocX(int x) { 3073 if (mInOverScrollMode) return x; 3074 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 3075 } 3076 3077 // Expects y in view coordinates 3078 int pinLocY(int y) { 3079 if (mInOverScrollMode) return y; 3080 return pinLoc(y, getViewHeightWithTitle(), 3081 computeRealVerticalScrollRange() + getTitleHeight()); 3082 } 3083 3084 /** 3085 * A title bar which is embedded in this WebView, and scrolls along with it 3086 * vertically, but not horizontally. 3087 */ 3088 private View mTitleBar; 3089 3090 /** 3091 * the title bar rendering gravity 3092 */ 3093 private int mTitleGravity; 3094 3095 /** 3096 * Add or remove a title bar to be embedded into the WebView, and scroll 3097 * along with it vertically, while remaining in view horizontally. Pass 3098 * null to remove the title bar from the WebView, and return to drawing 3099 * the WebView normally without translating to account for the title bar. 3100 * @hide 3101 */ 3102 public void setEmbeddedTitleBar(View v) { 3103 if (mTitleBar == v) return; 3104 if (mTitleBar != null) { 3105 removeView(mTitleBar); 3106 } 3107 if (null != v) { 3108 addView(v, new AbsoluteLayout.LayoutParams( 3109 ViewGroup.LayoutParams.MATCH_PARENT, 3110 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 3111 } 3112 mTitleBar = v; 3113 } 3114 3115 /** 3116 * Set where to render the embedded title bar 3117 * NO_GRAVITY at the top of the page 3118 * TOP at the top of the screen 3119 * @hide 3120 */ 3121 public void setTitleBarGravity(int gravity) { 3122 mTitleGravity = gravity; 3123 // force refresh 3124 invalidate(); 3125 } 3126 3127 /** 3128 * Given a distance in view space, convert it to content space. Note: this 3129 * does not reflect translation, just scaling, so this should not be called 3130 * with coordinates, but should be called for dimensions like width or 3131 * height. 3132 */ 3133 private int viewToContentDimension(int d) { 3134 return Math.round(d * mZoomManager.getInvScale()); 3135 } 3136 3137 /** 3138 * Given an x coordinate in view space, convert it to content space. Also 3139 * may be used for absolute heights (such as for the WebTextView's 3140 * textSize, which is unaffected by the height of the title bar). 3141 */ 3142 /*package*/ int viewToContentX(int x) { 3143 return viewToContentDimension(x); 3144 } 3145 3146 /** 3147 * Given a y coordinate in view space, convert it to content space. 3148 * Takes into account the height of the title bar if there is one 3149 * embedded into the WebView. 3150 */ 3151 /*package*/ int viewToContentY(int y) { 3152 return viewToContentDimension(y - getTitleHeight()); 3153 } 3154 3155 /** 3156 * Given a x coordinate in view space, convert it to content space. 3157 * Returns the result as a float. 3158 */ 3159 private float viewToContentXf(int x) { 3160 return x * mZoomManager.getInvScale(); 3161 } 3162 3163 /** 3164 * Given a y coordinate in view space, convert it to content space. 3165 * Takes into account the height of the title bar if there is one 3166 * embedded into the WebView. Returns the result as a float. 3167 */ 3168 private float viewToContentYf(int y) { 3169 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 3170 } 3171 3172 /** 3173 * Given a distance in content space, convert it to view space. Note: this 3174 * does not reflect translation, just scaling, so this should not be called 3175 * with coordinates, but should be called for dimensions like width or 3176 * height. 3177 */ 3178 /*package*/ int contentToViewDimension(int d) { 3179 return Math.round(d * mZoomManager.getScale()); 3180 } 3181 3182 /** 3183 * Given an x coordinate in content space, convert it to view 3184 * space. 3185 */ 3186 /*package*/ int contentToViewX(int x) { 3187 return contentToViewDimension(x); 3188 } 3189 3190 /** 3191 * Given a y coordinate in content space, convert it to view 3192 * space. Takes into account the height of the title bar. 3193 */ 3194 /*package*/ int contentToViewY(int y) { 3195 return contentToViewDimension(y) + getTitleHeight(); 3196 } 3197 3198 private Rect contentToViewRect(Rect x) { 3199 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 3200 contentToViewX(x.right), contentToViewY(x.bottom)); 3201 } 3202 3203 /* To invalidate a rectangle in content coordinates, we need to transform 3204 the rect into view coordinates, so we can then call invalidate(...). 3205 3206 Normally, we would just call contentToView[XY](...), which eventually 3207 calls Math.round(coordinate * mActualScale). However, for invalidates, 3208 we need to account for the slop that occurs with antialiasing. To 3209 address that, we are a little more liberal in the size of the rect that 3210 we invalidate. 3211 3212 This liberal calculation calls floor() for the top/left, and ceil() for 3213 the bottom/right coordinates. This catches the possible extra pixels of 3214 antialiasing that we might have missed with just round(). 3215 */ 3216 3217 // Called by JNI to invalidate the View, given rectangle coordinates in 3218 // content space 3219 private void viewInvalidate(int l, int t, int r, int b) { 3220 final float scale = mZoomManager.getScale(); 3221 final int dy = getTitleHeight(); 3222 invalidate((int)Math.floor(l * scale), 3223 (int)Math.floor(t * scale) + dy, 3224 (int)Math.ceil(r * scale), 3225 (int)Math.ceil(b * scale) + dy); 3226 } 3227 3228 // Called by JNI to invalidate the View after a delay, given rectangle 3229 // coordinates in content space 3230 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 3231 final float scale = mZoomManager.getScale(); 3232 final int dy = getTitleHeight(); 3233 postInvalidateDelayed(delay, 3234 (int)Math.floor(l * scale), 3235 (int)Math.floor(t * scale) + dy, 3236 (int)Math.ceil(r * scale), 3237 (int)Math.ceil(b * scale) + dy); 3238 } 3239 3240 private void invalidateContentRect(Rect r) { 3241 viewInvalidate(r.left, r.top, r.right, r.bottom); 3242 } 3243 3244 // stop the scroll animation, and don't let a subsequent fling add 3245 // to the existing velocity 3246 private void abortAnimation() { 3247 mScroller.abortAnimation(); 3248 mLastVelocity = 0; 3249 } 3250 3251 /* call from webcoreview.draw(), so we're still executing in the UI thread 3252 */ 3253 private void recordNewContentSize(int w, int h, boolean updateLayout) { 3254 3255 // premature data from webkit, ignore 3256 if ((w | h) == 0) { 3257 return; 3258 } 3259 3260 // don't abort a scroll animation if we didn't change anything 3261 if (mContentWidth != w || mContentHeight != h) { 3262 // record new dimensions 3263 mContentWidth = w; 3264 mContentHeight = h; 3265 // If history Picture is drawn, don't update scroll. They will be 3266 // updated when we get out of that mode. 3267 if (!mDrawHistory) { 3268 // repin our scroll, taking into account the new content size 3269 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 3270 if (!mScroller.isFinished()) { 3271 // We are in the middle of a scroll. Repin the final scroll 3272 // position. 3273 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 3274 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 3275 } 3276 } 3277 } 3278 contentSizeChanged(updateLayout); 3279 } 3280 3281 // Used to avoid sending many visible rect messages. 3282 private Rect mLastVisibleRectSent = new Rect(); 3283 private Rect mLastGlobalRect = new Rect(); 3284 private Rect mVisibleRect = new Rect(); 3285 private Rect mGlobalVisibleRect = new Rect(); 3286 private Point mScrollOffset = new Point(); 3287 3288 Rect sendOurVisibleRect() { 3289 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 3290 calcOurContentVisibleRect(mVisibleRect); 3291 // Rect.equals() checks for null input. 3292 if (!mVisibleRect.equals(mLastVisibleRectSent)) { 3293 if (!mBlockWebkitViewMessages) { 3294 mScrollOffset.set(mVisibleRect.left, mVisibleRect.top); 3295 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 3296 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 3297 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, mScrollOffset); 3298 } 3299 mLastVisibleRectSent.set(mVisibleRect); 3300 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3301 } 3302 if (getGlobalVisibleRect(mGlobalVisibleRect) 3303 && !mGlobalVisibleRect.equals(mLastGlobalRect)) { 3304 if (DebugFlags.WEB_VIEW) { 3305 Log.v(LOGTAG, "sendOurVisibleRect=(" + mGlobalVisibleRect.left + "," 3306 + mGlobalVisibleRect.top + ",r=" + mGlobalVisibleRect.right + ",b=" 3307 + mGlobalVisibleRect.bottom); 3308 } 3309 // TODO: the global offset is only used by windowRect() 3310 // in ChromeClientAndroid ; other clients such as touch 3311 // and mouse events could return view + screen relative points. 3312 if (!mBlockWebkitViewMessages) { 3313 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, mGlobalVisibleRect); 3314 } 3315 mLastGlobalRect.set(mGlobalVisibleRect); 3316 } 3317 return mVisibleRect; 3318 } 3319 3320 private Point mGlobalVisibleOffset = new Point(); 3321 // Sets r to be the visible rectangle of our webview in view coordinates 3322 private void calcOurVisibleRect(Rect r) { 3323 getGlobalVisibleRect(r, mGlobalVisibleOffset); 3324 r.offset(-mGlobalVisibleOffset.x, -mGlobalVisibleOffset.y); 3325 } 3326 3327 // Sets r to be our visible rectangle in content coordinates 3328 private void calcOurContentVisibleRect(Rect r) { 3329 calcOurVisibleRect(r); 3330 r.left = viewToContentX(r.left); 3331 // viewToContentY will remove the total height of the title bar. Add 3332 // the visible height back in to account for the fact that if the title 3333 // bar is partially visible, the part of the visible rect which is 3334 // displaying our content is displaced by that amount. 3335 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 3336 r.right = viewToContentX(r.right); 3337 r.bottom = viewToContentY(r.bottom); 3338 } 3339 3340 private Rect mContentVisibleRect = new Rect(); 3341 // Sets r to be our visible rectangle in content coordinates. We use this 3342 // method on the native side to compute the position of the fixed layers. 3343 // Uses floating coordinates (necessary to correctly place elements when 3344 // the scale factor is not 1) 3345 private void calcOurContentVisibleRectF(RectF r) { 3346 calcOurVisibleRect(mContentVisibleRect); 3347 r.left = viewToContentXf(mContentVisibleRect.left); 3348 // viewToContentY will remove the total height of the title bar. Add 3349 // the visible height back in to account for the fact that if the title 3350 // bar is partially visible, the part of the visible rect which is 3351 // displaying our content is displaced by that amount. 3352 r.top = viewToContentYf(mContentVisibleRect.top + getVisibleTitleHeightImpl()); 3353 r.right = viewToContentXf(mContentVisibleRect.right); 3354 r.bottom = viewToContentYf(mContentVisibleRect.bottom); 3355 } 3356 3357 static class ViewSizeData { 3358 int mWidth; 3359 int mHeight; 3360 float mHeightWidthRatio; 3361 int mActualViewHeight; 3362 int mTextWrapWidth; 3363 int mAnchorX; 3364 int mAnchorY; 3365 float mScale; 3366 boolean mIgnoreHeight; 3367 } 3368 3369 /** 3370 * Compute unzoomed width and height, and if they differ from the last 3371 * values we sent, send them to webkit (to be used as new viewport) 3372 * 3373 * @param force ensures that the message is sent to webkit even if the width 3374 * or height has not changed since the last message 3375 * 3376 * @return true if new values were sent 3377 */ 3378 boolean sendViewSizeZoom(boolean force) { 3379 if (mBlockWebkitViewMessages) return false; 3380 if (mZoomManager.isPreventingWebkitUpdates()) return false; 3381 3382 int viewWidth = getViewWidth(); 3383 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 3384 // This height could be fixed and be different from actual visible height. 3385 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 3386 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 3387 // Make the ratio more accurate than (newHeight / newWidth), since the 3388 // latter both are calculated and rounded. 3389 float heightWidthRatio = (float) viewHeight / viewWidth; 3390 /* 3391 * Because the native side may have already done a layout before the 3392 * View system was able to measure us, we have to send a height of 0 to 3393 * remove excess whitespace when we grow our width. This will trigger a 3394 * layout and a change in content size. This content size change will 3395 * mean that contentSizeChanged will either call this method directly or 3396 * indirectly from onSizeChanged. 3397 */ 3398 if (newWidth > mLastWidthSent && mWrapContent) { 3399 newHeight = 0; 3400 heightWidthRatio = 0; 3401 } 3402 // Actual visible content height. 3403 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 3404 // Avoid sending another message if the dimensions have not changed. 3405 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 3406 actualViewHeight != mLastActualHeightSent) { 3407 ViewSizeData data = new ViewSizeData(); 3408 data.mWidth = newWidth; 3409 data.mHeight = newHeight; 3410 data.mHeightWidthRatio = heightWidthRatio; 3411 data.mActualViewHeight = actualViewHeight; 3412 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 3413 data.mScale = mZoomManager.getScale(); 3414 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 3415 && !mHeightCanMeasure; 3416 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 3417 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 3418 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 3419 mLastWidthSent = newWidth; 3420 mLastHeightSent = newHeight; 3421 mLastActualHeightSent = actualViewHeight; 3422 mZoomManager.clearDocumentAnchor(); 3423 return true; 3424 } 3425 return false; 3426 } 3427 3428 /** 3429 * Update the double-tap zoom. 3430 */ 3431 /* package */ void updateDoubleTapZoom(int doubleTapZoom) { 3432 mZoomManager.updateDoubleTapZoom(doubleTapZoom); 3433 } 3434 3435 private int computeRealHorizontalScrollRange() { 3436 if (mDrawHistory) { 3437 return mHistoryWidth; 3438 } else { 3439 // to avoid rounding error caused unnecessary scrollbar, use floor 3440 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 3441 } 3442 } 3443 3444 @Override 3445 protected int computeHorizontalScrollRange() { 3446 int range = computeRealHorizontalScrollRange(); 3447 3448 // Adjust reported range if overscrolled to compress the scroll bars 3449 final int scrollX = mScrollX; 3450 final int overscrollRight = computeMaxScrollX(); 3451 if (scrollX < 0) { 3452 range -= scrollX; 3453 } else if (scrollX > overscrollRight) { 3454 range += scrollX - overscrollRight; 3455 } 3456 3457 return range; 3458 } 3459 3460 @Override 3461 protected int computeHorizontalScrollOffset() { 3462 return Math.max(mScrollX, 0); 3463 } 3464 3465 private int computeRealVerticalScrollRange() { 3466 if (mDrawHistory) { 3467 return mHistoryHeight; 3468 } else { 3469 // to avoid rounding error caused unnecessary scrollbar, use floor 3470 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 3471 } 3472 } 3473 3474 @Override 3475 protected int computeVerticalScrollRange() { 3476 int range = computeRealVerticalScrollRange(); 3477 3478 // Adjust reported range if overscrolled to compress the scroll bars 3479 final int scrollY = mScrollY; 3480 final int overscrollBottom = computeMaxScrollY(); 3481 if (scrollY < 0) { 3482 range -= scrollY; 3483 } else if (scrollY > overscrollBottom) { 3484 range += scrollY - overscrollBottom; 3485 } 3486 3487 return range; 3488 } 3489 3490 @Override 3491 protected int computeVerticalScrollOffset() { 3492 return Math.max(mScrollY - getTitleHeight(), 0); 3493 } 3494 3495 @Override 3496 protected int computeVerticalScrollExtent() { 3497 return getViewHeight(); 3498 } 3499 3500 /** @hide */ 3501 @Override 3502 protected void onDrawVerticalScrollBar(Canvas canvas, 3503 Drawable scrollBar, 3504 int l, int t, int r, int b) { 3505 if (mScrollY < 0) { 3506 t -= mScrollY; 3507 } 3508 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3509 scrollBar.draw(canvas); 3510 } 3511 3512 @Override 3513 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3514 boolean clampedY) { 3515 // Special-case layer scrolling so that we do not trigger normal scroll 3516 // updating. 3517 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3518 scrollLayerTo(scrollX, scrollY); 3519 return; 3520 } 3521 mInOverScrollMode = false; 3522 int maxX = computeMaxScrollX(); 3523 int maxY = computeMaxScrollY(); 3524 if (maxX == 0) { 3525 // do not over scroll x if the page just fits the screen 3526 scrollX = pinLocX(scrollX); 3527 } else if (scrollX < 0 || scrollX > maxX) { 3528 mInOverScrollMode = true; 3529 } 3530 if (scrollY < 0 || scrollY > maxY) { 3531 mInOverScrollMode = true; 3532 } 3533 3534 int oldX = mScrollX; 3535 int oldY = mScrollY; 3536 3537 super.scrollTo(scrollX, scrollY); 3538 3539 if (mOverScrollGlow != null) { 3540 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 3541 } 3542 } 3543 3544 /** 3545 * Get the url for the current page. This is not always the same as the url 3546 * passed to WebViewClient.onPageStarted because although the load for 3547 * that url has begun, the current page may not have changed. 3548 * @return The url for the current page. 3549 */ 3550 public String getUrl() { 3551 checkThread(); 3552 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3553 return h != null ? h.getUrl() : null; 3554 } 3555 3556 /** 3557 * Get the original url for the current page. This is not always the same 3558 * as the url passed to WebViewClient.onPageStarted because although the 3559 * load for that url has begun, the current page may not have changed. 3560 * Also, there may have been redirects resulting in a different url to that 3561 * originally requested. 3562 * @return The url that was originally requested for the current page. 3563 */ 3564 public String getOriginalUrl() { 3565 checkThread(); 3566 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3567 return h != null ? h.getOriginalUrl() : null; 3568 } 3569 3570 /** 3571 * Get the title for the current page. This is the title of the current page 3572 * until WebViewClient.onReceivedTitle is called. 3573 * @return The title for the current page. 3574 */ 3575 public String getTitle() { 3576 checkThread(); 3577 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3578 return h != null ? h.getTitle() : null; 3579 } 3580 3581 /** 3582 * Get the favicon for the current page. This is the favicon of the current 3583 * page until WebViewClient.onReceivedIcon is called. 3584 * @return The favicon for the current page. 3585 */ 3586 public Bitmap getFavicon() { 3587 checkThread(); 3588 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3589 return h != null ? h.getFavicon() : null; 3590 } 3591 3592 /** 3593 * Get the touch icon url for the apple-touch-icon <link> element, or 3594 * a URL on this site's server pointing to the standard location of a 3595 * touch icon. 3596 * @hide 3597 */ 3598 public String getTouchIconUrl() { 3599 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3600 return h != null ? h.getTouchIconUrl() : null; 3601 } 3602 3603 /** 3604 * Get the progress for the current page. 3605 * @return The progress for the current page between 0 and 100. 3606 */ 3607 public int getProgress() { 3608 checkThread(); 3609 return mCallbackProxy.getProgress(); 3610 } 3611 3612 /** 3613 * @return the height of the HTML content. 3614 */ 3615 public int getContentHeight() { 3616 checkThread(); 3617 return mContentHeight; 3618 } 3619 3620 /** 3621 * @return the width of the HTML content. 3622 * @hide 3623 */ 3624 public int getContentWidth() { 3625 return mContentWidth; 3626 } 3627 3628 /** 3629 * @hide 3630 */ 3631 public int getPageBackgroundColor() { 3632 return nativeGetBackgroundColor(); 3633 } 3634 3635 /** 3636 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3637 * is a global requests, not restricted to just this webview. This can be 3638 * useful if the application has been paused. 3639 */ 3640 public void pauseTimers() { 3641 checkThread(); 3642 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3643 } 3644 3645 /** 3646 * Resume all layout, parsing, and JavaScript timers for all webviews. 3647 * This will resume dispatching all timers. 3648 */ 3649 public void resumeTimers() { 3650 checkThread(); 3651 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3652 } 3653 3654 /** 3655 * Call this to pause any extra processing associated with this WebView and 3656 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3657 * is taken offscreen, this could be called to reduce unnecessary CPU or 3658 * network traffic. When the WebView is again "active", call onResume(). 3659 * 3660 * Note that this differs from pauseTimers(), which affects all WebViews. 3661 */ 3662 public void onPause() { 3663 checkThread(); 3664 if (!mIsPaused) { 3665 mIsPaused = true; 3666 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3667 // We want to pause the current playing video when switching out 3668 // from the current WebView/tab. 3669 if (mHTML5VideoViewProxy != null) { 3670 mHTML5VideoViewProxy.pauseAndDispatch(); 3671 } 3672 if (mNativeClass != 0) { 3673 nativeSetPauseDrawing(mNativeClass, true); 3674 } 3675 3676 cancelSelectDialog(); 3677 WebCoreThreadWatchdog.pause(); 3678 } 3679 } 3680 3681 @Override 3682 protected void onWindowVisibilityChanged(int visibility) { 3683 super.onWindowVisibilityChanged(visibility); 3684 updateDrawingState(); 3685 } 3686 3687 void updateDrawingState() { 3688 if (mNativeClass == 0 || mIsPaused) return; 3689 if (getWindowVisibility() != VISIBLE) { 3690 nativeSetPauseDrawing(mNativeClass, true); 3691 } else if (getVisibility() != VISIBLE) { 3692 nativeSetPauseDrawing(mNativeClass, true); 3693 } else { 3694 nativeSetPauseDrawing(mNativeClass, false); 3695 } 3696 } 3697 3698 /** 3699 * Call this to resume a WebView after a previous call to onPause(). 3700 */ 3701 public void onResume() { 3702 checkThread(); 3703 if (mIsPaused) { 3704 mIsPaused = false; 3705 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3706 if (mNativeClass != 0) { 3707 nativeSetPauseDrawing(mNativeClass, false); 3708 } 3709 } 3710 // Ensure that the watchdog has a currently valid Context to be able to display 3711 // a prompt dialog. For example, if the Activity was finished whilst the WebCore 3712 // thread was blocked and the Activity is started again, we may reuse the blocked 3713 // thread, but we'll have a new Activity. 3714 WebCoreThreadWatchdog.updateContext(mContext); 3715 // We get a call to onResume for new WebViews (i.e. mIsPaused will be false). We need 3716 // to ensure that the Watchdog thread is running for the new WebView, so call 3717 // it outside the if block above. 3718 WebCoreThreadWatchdog.resume(); 3719 } 3720 3721 /** 3722 * Returns true if the view is paused, meaning onPause() was called. Calling 3723 * onResume() sets the paused state back to false. 3724 * @hide 3725 */ 3726 public boolean isPaused() { 3727 return mIsPaused; 3728 } 3729 3730 /** 3731 * Call this to inform the view that memory is low so that it can 3732 * free any available memory. 3733 */ 3734 public void freeMemory() { 3735 checkThread(); 3736 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3737 } 3738 3739 /** 3740 * Clear the resource cache. Note that the cache is per-application, so 3741 * this will clear the cache for all WebViews used. 3742 * 3743 * @param includeDiskFiles If false, only the RAM cache is cleared. 3744 */ 3745 public void clearCache(boolean includeDiskFiles) { 3746 checkThread(); 3747 // Note: this really needs to be a static method as it clears cache for all 3748 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3749 // we can't make this static. 3750 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3751 includeDiskFiles ? 1 : 0, 0); 3752 } 3753 3754 /** 3755 * Make sure that clearing the form data removes the adapter from the 3756 * currently focused textfield if there is one. 3757 */ 3758 public void clearFormData() { 3759 checkThread(); 3760 if (inEditingMode()) { 3761 mWebTextView.setAdapterCustom(null); 3762 } 3763 } 3764 3765 /** 3766 * Tell the WebView to clear its internal back/forward list. 3767 */ 3768 public void clearHistory() { 3769 checkThread(); 3770 mCallbackProxy.getBackForwardList().setClearPending(); 3771 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3772 } 3773 3774 /** 3775 * Clear the SSL preferences table stored in response to proceeding with SSL 3776 * certificate errors. 3777 */ 3778 public void clearSslPreferences() { 3779 checkThread(); 3780 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3781 } 3782 3783 /** 3784 * Return the WebBackForwardList for this WebView. This contains the 3785 * back/forward list for use in querying each item in the history stack. 3786 * This is a copy of the private WebBackForwardList so it contains only a 3787 * snapshot of the current state. Multiple calls to this method may return 3788 * different objects. The object returned from this method will not be 3789 * updated to reflect any new state. 3790 */ 3791 public WebBackForwardList copyBackForwardList() { 3792 checkThread(); 3793 return mCallbackProxy.getBackForwardList().clone(); 3794 } 3795 3796 /* 3797 * Highlight and scroll to the next occurance of String in findAll. 3798 * Wraps the page infinitely, and scrolls. Must be called after 3799 * calling findAll. 3800 * 3801 * @param forward Direction to search. 3802 */ 3803 public void findNext(boolean forward) { 3804 checkThread(); 3805 if (0 == mNativeClass) return; // client isn't initialized 3806 mWebViewCore.sendMessage(EventHub.FIND_NEXT, forward ? 1 : 0); 3807 } 3808 3809 /* 3810 * Find all instances of find on the page and highlight them. 3811 * @param find String to find. 3812 * @return int The number of occurances of the String "find" 3813 * that were found. 3814 */ 3815 public int findAll(String find) { 3816 return findAllBody(find, false); 3817 } 3818 3819 /** 3820 * @hide 3821 */ 3822 public void findAllAsync(String find) { 3823 findAllBody(find, true); 3824 } 3825 3826 private int findAllBody(String find, boolean isAsync) { 3827 checkThread(); 3828 if (0 == mNativeClass) return 0; // client isn't initialized 3829 mLastFind = find; 3830 mWebViewCore.removeMessages(EventHub.FIND_ALL); 3831 WebViewCore.FindAllRequest request = new 3832 WebViewCore.FindAllRequest(find); 3833 if (isAsync) { 3834 mWebViewCore.sendMessage(EventHub.FIND_ALL, request); 3835 return 0; // no need to wait for response 3836 } 3837 synchronized(request) { 3838 try { 3839 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.FIND_ALL, 3840 request); 3841 while (request.mMatchCount == -1) { 3842 request.wait(); 3843 } 3844 } 3845 catch (InterruptedException e) { 3846 return 0; 3847 } 3848 } 3849 return request.mMatchCount; 3850 } 3851 3852 /** 3853 * Start an ActionMode for finding text in this WebView. Only works if this 3854 * WebView is attached to the view system. 3855 * @param text If non-null, will be the initial text to search for. 3856 * Otherwise, the last String searched for in this WebView will 3857 * be used to start. 3858 * @param showIme If true, show the IME, assuming the user will begin typing. 3859 * If false and text is non-null, perform a find all. 3860 * @return boolean True if the find dialog is shown, false otherwise. 3861 */ 3862 public boolean showFindDialog(String text, boolean showIme) { 3863 checkThread(); 3864 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3865 if (getParent() == null || startActionMode(callback) == null) { 3866 // Could not start the action mode, so end Find on page 3867 return false; 3868 } 3869 mCachedOverlappingActionModeHeight = -1; 3870 mFindCallback = callback; 3871 setFindIsUp(true); 3872 mFindCallback.setWebView(this); 3873 if (showIme) { 3874 mFindCallback.showSoftInput(); 3875 } else if (text != null) { 3876 mFindCallback.setText(text); 3877 mFindCallback.findAll(); 3878 return true; 3879 } 3880 if (text == null) { 3881 text = mLastFind; 3882 } 3883 if (text != null) { 3884 mFindCallback.setText(text); 3885 mFindCallback.findAll(); 3886 } 3887 return true; 3888 } 3889 3890 /** 3891 * Keep track of the find callback so that we can remove its titlebar if 3892 * necessary. 3893 */ 3894 private FindActionModeCallback mFindCallback; 3895 3896 /** 3897 * Toggle whether the find dialog is showing, for both native and Java. 3898 */ 3899 private void setFindIsUp(boolean isUp) { 3900 mFindIsUp = isUp; 3901 if (0 == mNativeClass) return; // client isn't initialized 3902 nativeSetFindIsUp(isUp); 3903 } 3904 3905 // Used to know whether the find dialog is open. Affects whether 3906 // or not we draw the highlights for matches. 3907 private boolean mFindIsUp; 3908 3909 // Keep track of the last string sent, so we can search again when find is 3910 // reopened. 3911 private String mLastFind; 3912 3913 /** 3914 * Return the first substring consisting of the address of a physical 3915 * location. Currently, only addresses in the United States are detected, 3916 * and consist of: 3917 * - a house number 3918 * - a street name 3919 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3920 * - a city name 3921 * - a state or territory, either spelled out or two-letter abbr. 3922 * - an optional 5 digit or 9 digit zip code. 3923 * 3924 * All names must be correctly capitalized, and the zip code, if present, 3925 * must be valid for the state. The street type must be a standard USPS 3926 * spelling or abbreviation. The state or territory must also be spelled 3927 * or abbreviated using USPS standards. The house number may not exceed 3928 * five digits. 3929 * @param addr The string to search for addresses. 3930 * 3931 * @return the address, or if no address is found, return null. 3932 */ 3933 public static String findAddress(String addr) { 3934 checkThread(); 3935 return findAddress(addr, false); 3936 } 3937 3938 /** 3939 * @hide 3940 * Return the first substring consisting of the address of a physical 3941 * location. Currently, only addresses in the United States are detected, 3942 * and consist of: 3943 * - a house number 3944 * - a street name 3945 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3946 * - a city name 3947 * - a state or territory, either spelled out or two-letter abbr. 3948 * - an optional 5 digit or 9 digit zip code. 3949 * 3950 * Names are optionally capitalized, and the zip code, if present, 3951 * must be valid for the state. The street type must be a standard USPS 3952 * spelling or abbreviation. The state or territory must also be spelled 3953 * or abbreviated using USPS standards. The house number may not exceed 3954 * five digits. 3955 * @param addr The string to search for addresses. 3956 * @param caseInsensitive addr Set to true to make search ignore case. 3957 * 3958 * @return the address, or if no address is found, return null. 3959 */ 3960 public static String findAddress(String addr, boolean caseInsensitive) { 3961 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3962 } 3963 3964 /* 3965 * Clear the highlighting surrounding text matches created by findAll. 3966 */ 3967 public void clearMatches() { 3968 checkThread(); 3969 if (mNativeClass == 0) 3970 return; 3971 mWebViewCore.removeMessages(EventHub.FIND_ALL); 3972 mWebViewCore.sendMessage(EventHub.FIND_ALL, null); 3973 } 3974 3975 3976 /** 3977 * Called when the find ActionMode ends. 3978 */ 3979 void notifyFindDialogDismissed() { 3980 mFindCallback = null; 3981 mCachedOverlappingActionModeHeight = -1; 3982 if (mWebViewCore == null) { 3983 return; 3984 } 3985 clearMatches(); 3986 setFindIsUp(false); 3987 // Now that the dialog has been removed, ensure that we scroll to a 3988 // location that is not beyond the end of the page. 3989 pinScrollTo(mScrollX, mScrollY, false, 0); 3990 invalidate(); 3991 } 3992 3993 /** 3994 * Query the document to see if it contains any image references. The 3995 * message object will be dispatched with arg1 being set to 1 if images 3996 * were found and 0 if the document does not reference any images. 3997 * @param response The message that will be dispatched with the result. 3998 */ 3999 public void documentHasImages(Message response) { 4000 checkThread(); 4001 if (response == null) { 4002 return; 4003 } 4004 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 4005 } 4006 4007 /** 4008 * Request the scroller to abort any ongoing animation 4009 * 4010 * @hide 4011 */ 4012 public void stopScroll() { 4013 mScroller.forceFinished(true); 4014 mLastVelocity = 0; 4015 } 4016 4017 @Override 4018 public void computeScroll() { 4019 if (mScroller.computeScrollOffset()) { 4020 int oldX = mScrollX; 4021 int oldY = mScrollY; 4022 int x = mScroller.getCurrX(); 4023 int y = mScroller.getCurrY(); 4024 invalidate(); // So we draw again 4025 4026 if (!mScroller.isFinished()) { 4027 int rangeX = computeMaxScrollX(); 4028 int rangeY = computeMaxScrollY(); 4029 int overflingDistance = mOverflingDistance; 4030 4031 // Use the layer's scroll data if needed. 4032 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 4033 oldX = mScrollingLayerRect.left; 4034 oldY = mScrollingLayerRect.top; 4035 rangeX = mScrollingLayerRect.right; 4036 rangeY = mScrollingLayerRect.bottom; 4037 // No overscrolling for layers. 4038 overflingDistance = 0; 4039 } 4040 4041 overScrollBy(x - oldX, y - oldY, oldX, oldY, 4042 rangeX, rangeY, 4043 overflingDistance, overflingDistance, false); 4044 4045 if (mOverScrollGlow != null) { 4046 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 4047 } 4048 } else { 4049 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 4050 mScrollX = x; 4051 mScrollY = y; 4052 } else { 4053 // Update the layer position instead of WebView. 4054 scrollLayerTo(x, y); 4055 } 4056 abortAnimation(); 4057 nativeSetIsScrolling(false); 4058 if (!mBlockWebkitViewMessages) { 4059 WebViewCore.resumePriority(); 4060 if (!mSelectingText) { 4061 WebViewCore.resumeUpdatePicture(mWebViewCore); 4062 } 4063 } 4064 if (oldX != mScrollX || oldY != mScrollY) { 4065 sendOurVisibleRect(); 4066 } 4067 } 4068 } else { 4069 super.computeScroll(); 4070 } 4071 } 4072 4073 private void scrollLayerTo(int x, int y) { 4074 if (x == mScrollingLayerRect.left && y == mScrollingLayerRect.top) { 4075 return; 4076 } 4077 if (mSelectingText) { 4078 int dx = mScrollingLayerRect.left - x; 4079 int dy = mScrollingLayerRect.top - y; 4080 if (mSelectCursorBaseLayerId == mCurrentScrollingLayerId) { 4081 mSelectCursorBase.offset(dx, dy); 4082 } 4083 if (mSelectCursorExtentLayerId == mCurrentScrollingLayerId) { 4084 mSelectCursorExtent.offset(dx, dy); 4085 } 4086 } 4087 nativeScrollLayer(mCurrentScrollingLayerId, x, y); 4088 mScrollingLayerRect.left = x; 4089 mScrollingLayerRect.top = y; 4090 mWebViewCore.sendMessage(WebViewCore.EventHub.SCROLL_LAYER, mCurrentScrollingLayerId, 4091 mScrollingLayerRect); 4092 onScrollChanged(mScrollX, mScrollY, mScrollX, mScrollY); 4093 invalidate(); 4094 } 4095 4096 private static int computeDuration(int dx, int dy) { 4097 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 4098 int duration = distance * 1000 / STD_SPEED; 4099 return Math.min(duration, MAX_DURATION); 4100 } 4101 4102 // helper to pin the scrollBy parameters (already in view coordinates) 4103 // returns true if the scroll was changed 4104 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 4105 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 4106 } 4107 // helper to pin the scrollTo parameters (already in view coordinates) 4108 // returns true if the scroll was changed 4109 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 4110 x = pinLocX(x); 4111 y = pinLocY(y); 4112 int dx = x - mScrollX; 4113 int dy = y - mScrollY; 4114 4115 if ((dx | dy) == 0) { 4116 return false; 4117 } 4118 abortAnimation(); 4119 if (animate) { 4120 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 4121 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 4122 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 4123 awakenScrollBars(mScroller.getDuration()); 4124 invalidate(); 4125 } else { 4126 scrollTo(x, y); 4127 } 4128 return true; 4129 } 4130 4131 // Scale from content to view coordinates, and pin. 4132 // Also called by jni webview.cpp 4133 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 4134 if (mDrawHistory) { 4135 // disallow WebView to change the scroll position as History Picture 4136 // is used in the view system. 4137 // TODO: as we switchOutDrawHistory when trackball or navigation 4138 // keys are hit, this should be safe. Right? 4139 return false; 4140 } 4141 cx = contentToViewDimension(cx); 4142 cy = contentToViewDimension(cy); 4143 if (mHeightCanMeasure) { 4144 // move our visible rect according to scroll request 4145 if (cy != 0) { 4146 Rect tempRect = new Rect(); 4147 calcOurVisibleRect(tempRect); 4148 tempRect.offset(cx, cy); 4149 requestRectangleOnScreen(tempRect); 4150 } 4151 // FIXME: We scroll horizontally no matter what because currently 4152 // ScrollView and ListView will not scroll horizontally. 4153 // FIXME: Why do we only scroll horizontally if there is no 4154 // vertical scroll? 4155// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 4156 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 4157 } else { 4158 return pinScrollBy(cx, cy, animate, 0); 4159 } 4160 } 4161 4162 /** 4163 * Called by CallbackProxy when the page starts loading. 4164 * @param url The URL of the page which has started loading. 4165 */ 4166 /* package */ void onPageStarted(String url) { 4167 // every time we start a new page, we want to reset the 4168 // WebView certificate: if the new site is secure, we 4169 // will reload it and get a new certificate set; 4170 // if the new site is not secure, the certificate must be 4171 // null, and that will be the case 4172 setCertificate(null); 4173 4174 // reset the flag since we set to true in if need after 4175 // loading is see onPageFinished(Url) 4176 mAccessibilityScriptInjected = false; 4177 } 4178 4179 /** 4180 * Called by CallbackProxy when the page finishes loading. 4181 * @param url The URL of the page which has finished loading. 4182 */ 4183 /* package */ void onPageFinished(String url) { 4184 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 4185 // If the user is now on a different page, or has scrolled the page 4186 // past the point where the title bar is offscreen, ignore the 4187 // scroll request. 4188 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 4189 && mScrollX == 0 && mScrollY == 0) { 4190 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 4191 SLIDE_TITLE_DURATION); 4192 } 4193 mPageThatNeedsToSlideTitleBarOffScreen = null; 4194 } 4195 mZoomManager.onPageFinished(url); 4196 injectAccessibilityForUrl(url); 4197 } 4198 4199 /** 4200 * This method injects accessibility in the loaded document if accessibility 4201 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 4202 * If no URL specific script is found or JavaScript is disabled we fallback to 4203 * the default {@link AccessibilityInjector} implementation. 4204 * </p> 4205 * If the URL has the "axs" paramter set to 1 it has already done the 4206 * script injection so we do nothing. If the parameter is set to 0 4207 * the URL opts out accessibility script injection so we fall back to 4208 * the default {@link AccessibilityInjector}. 4209 * </p> 4210 * Note: If the user has not opted-in the accessibility script injection no scripts 4211 * are injected rather the default {@link AccessibilityInjector} implementation 4212 * is used. 4213 * 4214 * @param url The URL loaded by this {@link WebView}. 4215 */ 4216 private void injectAccessibilityForUrl(String url) { 4217 if (mWebViewCore == null) { 4218 return; 4219 } 4220 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 4221 4222 if (!accessibilityManager.isEnabled()) { 4223 // it is possible that accessibility was turned off between reloads 4224 ensureAccessibilityScriptInjectorInstance(false); 4225 return; 4226 } 4227 4228 if (!getSettings().getJavaScriptEnabled()) { 4229 // no JS so we fallback to the basic buil-in support 4230 ensureAccessibilityScriptInjectorInstance(true); 4231 return; 4232 } 4233 4234 // check the URL "axs" parameter to choose appropriate action 4235 int axsParameterValue = getAxsUrlParameterValue(url); 4236 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 4237 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 4238 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 4239 if (onDeviceScriptInjectionEnabled) { 4240 ensureAccessibilityScriptInjectorInstance(false); 4241 // neither script injected nor script injection opted out => we inject 4242 loadUrl(getScreenReaderInjectingJs()); 4243 // TODO: Set this flag after successfull script injection. Maybe upon injection 4244 // the chooser should update the meta tag and we check it to declare success 4245 mAccessibilityScriptInjected = true; 4246 } else { 4247 // injection disabled so we fallback to the basic built-in support 4248 ensureAccessibilityScriptInjectorInstance(true); 4249 } 4250 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 4251 // injection opted out so we fallback to the basic buil-in support 4252 ensureAccessibilityScriptInjectorInstance(true); 4253 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 4254 ensureAccessibilityScriptInjectorInstance(false); 4255 // the URL provides accessibility but we still need to add our generic script 4256 loadUrl(getScreenReaderInjectingJs()); 4257 } else { 4258 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 4259 } 4260 } 4261 4262 /** 4263 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 4264 * 4265 * @param present True to ensure an insance, false to ensure no instance. 4266 */ 4267 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 4268 if (present) { 4269 if (mAccessibilityInjector == null) { 4270 mAccessibilityInjector = new AccessibilityInjector(this); 4271 } 4272 } else { 4273 mAccessibilityInjector = null; 4274 } 4275 } 4276 4277 /** 4278 * Gets JavaScript that injects a screen-reader. 4279 * 4280 * @return The JavaScript snippet. 4281 */ 4282 private String getScreenReaderInjectingJs() { 4283 String screenReaderUrl = Settings.Secure.getString(mContext.getContentResolver(), 4284 Settings.Secure.ACCESSIBILITY_SCREEN_READER_URL); 4285 return String.format(ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE, screenReaderUrl); 4286 } 4287 4288 /** 4289 * Gets the "axs" URL parameter value. 4290 * 4291 * @param url A url to fetch the paramter from. 4292 * @return The parameter value if such, -1 otherwise. 4293 */ 4294 private int getAxsUrlParameterValue(String url) { 4295 if (mMatchAxsUrlParameterPattern == null) { 4296 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 4297 } 4298 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 4299 if (matcher.find()) { 4300 String keyValuePair = url.substring(matcher.start(), matcher.end()); 4301 return Integer.parseInt(keyValuePair.split("=")[1]); 4302 } 4303 return -1; 4304 } 4305 4306 /** 4307 * The URL of a page that sent a message to scroll the title bar off screen. 4308 * 4309 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 4310 * title bar off the screen. Sometimes, the scroll position is set before 4311 * the page finishes loading. Rather than scrolling while the page is still 4312 * loading, keep track of the URL and new scroll position so we can perform 4313 * the scroll once the page finishes loading. 4314 */ 4315 private String mPageThatNeedsToSlideTitleBarOffScreen; 4316 4317 /** 4318 * The destination Y scroll position to be used when the page finishes 4319 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 4320 */ 4321 private int mYDistanceToSlideTitleOffScreen; 4322 4323 // scale from content to view coordinates, and pin 4324 // return true if pin caused the final x/y different than the request cx/cy, 4325 // and a future scroll may reach the request cx/cy after our size has 4326 // changed 4327 // return false if the view scroll to the exact position as it is requested, 4328 // where negative numbers are taken to mean 0 4329 private boolean setContentScrollTo(int cx, int cy) { 4330 if (mDrawHistory) { 4331 // disallow WebView to change the scroll position as History Picture 4332 // is used in the view system. 4333 // One known case where this is called is that WebCore tries to 4334 // restore the scroll position. As history Picture already uses the 4335 // saved scroll position, it is ok to skip this. 4336 return false; 4337 } 4338 int vx; 4339 int vy; 4340 if ((cx | cy) == 0) { 4341 // If the page is being scrolled to (0,0), do not add in the title 4342 // bar's height, and simply scroll to (0,0). (The only other work 4343 // in contentToView_ is to multiply, so this would not change 0.) 4344 vx = 0; 4345 vy = 0; 4346 } else { 4347 vx = contentToViewX(cx); 4348 vy = contentToViewY(cy); 4349 } 4350// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 4351// vx + " " + vy + "]"); 4352 // Some mobile sites attempt to scroll the title bar off the page by 4353 // scrolling to (0,1). If we are at the top left corner of the 4354 // page, assume this is an attempt to scroll off the title bar, and 4355 // animate the title bar off screen slowly enough that the user can see 4356 // it. 4357 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 4358 && mTitleBar != null) { 4359 // FIXME: 100 should be defined somewhere as our max progress. 4360 if (getProgress() < 100) { 4361 // Wait to scroll the title bar off screen until the page has 4362 // finished loading. Keep track of the URL and the destination 4363 // Y position 4364 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 4365 mYDistanceToSlideTitleOffScreen = vy; 4366 } else { 4367 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 4368 } 4369 // Since we are animating, we have not yet reached the desired 4370 // scroll position. Do not return true to request another attempt 4371 return false; 4372 } 4373 pinScrollTo(vx, vy, false, 0); 4374 // If the request was to scroll to a negative coordinate, treat it as if 4375 // it was a request to scroll to 0 4376 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 4377 return true; 4378 } else { 4379 return false; 4380 } 4381 } 4382 4383 // scale from content to view coordinates, and pin 4384 private void spawnContentScrollTo(int cx, int cy) { 4385 if (mDrawHistory) { 4386 // disallow WebView to change the scroll position as History Picture 4387 // is used in the view system. 4388 return; 4389 } 4390 int vx = contentToViewX(cx); 4391 int vy = contentToViewY(cy); 4392 pinScrollTo(vx, vy, true, 0); 4393 } 4394 4395 /** 4396 * These are from webkit, and are in content coordinate system (unzoomed) 4397 */ 4398 private void contentSizeChanged(boolean updateLayout) { 4399 // suppress 0,0 since we usually see real dimensions soon after 4400 // this avoids drawing the prev content in a funny place. If we find a 4401 // way to consolidate these notifications, this check may become 4402 // obsolete 4403 if ((mContentWidth | mContentHeight) == 0) { 4404 return; 4405 } 4406 4407 if (mHeightCanMeasure) { 4408 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 4409 || updateLayout) { 4410 requestLayout(); 4411 } 4412 } else if (mWidthCanMeasure) { 4413 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 4414 || updateLayout) { 4415 requestLayout(); 4416 } 4417 } else { 4418 // If we don't request a layout, try to send our view size to the 4419 // native side to ensure that WebCore has the correct dimensions. 4420 sendViewSizeZoom(false); 4421 } 4422 } 4423 4424 /** 4425 * Set the WebViewClient that will receive various notifications and 4426 * requests. This will replace the current handler. 4427 * @param client An implementation of WebViewClient. 4428 */ 4429 public void setWebViewClient(WebViewClient client) { 4430 checkThread(); 4431 mCallbackProxy.setWebViewClient(client); 4432 } 4433 4434 /** 4435 * Gets the WebViewClient 4436 * @return the current WebViewClient instance. 4437 * 4438 * @hide This is an implementation detail. 4439 */ 4440 public WebViewClient getWebViewClient() { 4441 return mCallbackProxy.getWebViewClient(); 4442 } 4443 4444 /** 4445 * Register the interface to be used when content can not be handled by 4446 * the rendering engine, and should be downloaded instead. This will replace 4447 * the current handler. 4448 * @param listener An implementation of DownloadListener. 4449 */ 4450 public void setDownloadListener(DownloadListener listener) { 4451 checkThread(); 4452 mCallbackProxy.setDownloadListener(listener); 4453 } 4454 4455 /** 4456 * Set the chrome handler. This is an implementation of WebChromeClient for 4457 * use in handling JavaScript dialogs, favicons, titles, and the progress. 4458 * This will replace the current handler. 4459 * @param client An implementation of WebChromeClient. 4460 */ 4461 public void setWebChromeClient(WebChromeClient client) { 4462 checkThread(); 4463 mCallbackProxy.setWebChromeClient(client); 4464 } 4465 4466 /** 4467 * Gets the chrome handler. 4468 * @return the current WebChromeClient instance. 4469 * 4470 * @hide This is an implementation detail. 4471 */ 4472 public WebChromeClient getWebChromeClient() { 4473 return mCallbackProxy.getWebChromeClient(); 4474 } 4475 4476 /** 4477 * Set the back/forward list client. This is an implementation of 4478 * WebBackForwardListClient for handling new items and changes in the 4479 * history index. 4480 * @param client An implementation of WebBackForwardListClient. 4481 * {@hide} 4482 */ 4483 public void setWebBackForwardListClient(WebBackForwardListClient client) { 4484 mCallbackProxy.setWebBackForwardListClient(client); 4485 } 4486 4487 /** 4488 * Gets the WebBackForwardListClient. 4489 * {@hide} 4490 */ 4491 public WebBackForwardListClient getWebBackForwardListClient() { 4492 return mCallbackProxy.getWebBackForwardListClient(); 4493 } 4494 4495 /** 4496 * Set the Picture listener. This is an interface used to receive 4497 * notifications of a new Picture. 4498 * @param listener An implementation of WebView.PictureListener. 4499 * @deprecated This method is now obsolete. 4500 */ 4501 @Deprecated 4502 public void setPictureListener(PictureListener listener) { 4503 checkThread(); 4504 mPictureListener = listener; 4505 } 4506 4507 /** 4508 * {@hide} 4509 */ 4510 /* FIXME: Debug only! Remove for SDK! */ 4511 public void externalRepresentation(Message callback) { 4512 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 4513 } 4514 4515 /** 4516 * {@hide} 4517 */ 4518 /* FIXME: Debug only! Remove for SDK! */ 4519 public void documentAsText(Message callback) { 4520 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 4521 } 4522 4523 /** 4524 * This method injects the supplied Java object into the WebView. The 4525 * object is injected into the JavaScript context of the main frame, using 4526 * the supplied name. This allows the Java object to be accessed from 4527 * JavaScript. Note that that injected objects will not appear in 4528 * JavaScript until the page is next (re)loaded. For example: 4529 * <pre> webView.addJavascriptInterface(new Object(), "injectedObject"); 4530 * webView.loadData("<!DOCTYPE html><title></title>", "text/html", null); 4531 * webView.loadUrl("javascript:alert(injectedObject.toString())");</pre> 4532 * <p><strong>IMPORTANT:</strong> 4533 * <ul> 4534 * <li> addJavascriptInterface() can be used to allow JavaScript to control 4535 * the host application. This is a powerful feature, but also presents a 4536 * security risk. Use of this method in a WebView containing untrusted 4537 * content could allow an attacker to manipulate the host application in 4538 * unintended ways, executing Java code with the permissions of the host 4539 * application. Use extreme care when using this method in a WebView which 4540 * could contain untrusted content. 4541 * <li> JavaScript interacts with Java object on a private, background 4542 * thread of the WebView. Care is therefore required to maintain thread 4543 * safety.</li> 4544 * </ul></p> 4545 * @param object The Java object to inject into the WebView's JavaScript 4546 * context. Null values are ignored. 4547 * @param name The name used to expose the instance in JavaScript. 4548 */ 4549 public void addJavascriptInterface(Object object, String name) { 4550 checkThread(); 4551 if (object == null) { 4552 return; 4553 } 4554 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4555 arg.mObject = object; 4556 arg.mInterfaceName = name; 4557 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 4558 } 4559 4560 /** 4561 * Removes a previously added JavaScript interface with the given name. 4562 * @param interfaceName The name of the interface to remove. 4563 */ 4564 public void removeJavascriptInterface(String interfaceName) { 4565 checkThread(); 4566 if (mWebViewCore != null) { 4567 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4568 arg.mInterfaceName = interfaceName; 4569 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 4570 } 4571 } 4572 4573 /** 4574 * Return the WebSettings object used to control the settings for this 4575 * WebView. 4576 * @return A WebSettings object that can be used to control this WebView's 4577 * settings. 4578 */ 4579 public WebSettings getSettings() { 4580 checkThread(); 4581 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4582 } 4583 4584 /** 4585 * Return the list of currently loaded plugins. 4586 * @return The list of currently loaded plugins. 4587 * 4588 * @hide 4589 * @deprecated This was used for Gears, which has been deprecated. 4590 */ 4591 @Deprecated 4592 public static synchronized PluginList getPluginList() { 4593 checkThread(); 4594 return new PluginList(); 4595 } 4596 4597 /** 4598 * @hide 4599 * @deprecated This was used for Gears, which has been deprecated. 4600 */ 4601 @Deprecated 4602 public void refreshPlugins(boolean reloadOpenPages) { 4603 checkThread(); 4604 } 4605 4606 //------------------------------------------------------------------------- 4607 // Override View methods 4608 //------------------------------------------------------------------------- 4609 4610 @Override 4611 protected void finalize() throws Throwable { 4612 try { 4613 if (mNativeClass != 0) { 4614 mPrivateHandler.post(new Runnable() { 4615 @Override 4616 public void run() { 4617 destroy(); 4618 } 4619 }); 4620 } 4621 } finally { 4622 super.finalize(); 4623 } 4624 } 4625 4626 @Override 4627 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 4628 if (child == mTitleBar) { 4629 // When drawing the title bar, move it horizontally to always show 4630 // at the top of the WebView. 4631 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 4632 int newTop = 0; 4633 if (mTitleGravity == Gravity.NO_GRAVITY) { 4634 newTop = Math.min(0, mScrollY); 4635 } else if (mTitleGravity == Gravity.TOP) { 4636 newTop = mScrollY; 4637 } 4638 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 4639 mTitleBar.setTop(newTop); 4640 } 4641 return super.drawChild(canvas, child, drawingTime); 4642 } 4643 4644 private void drawContent(Canvas canvas, boolean drawRings) { 4645 drawCoreAndCursorRing(canvas, mBackgroundColor, 4646 mDrawCursorRing && drawRings); 4647 } 4648 4649 /** 4650 * Draw the background when beyond bounds 4651 * @param canvas Canvas to draw into 4652 */ 4653 private void drawOverScrollBackground(Canvas canvas) { 4654 if (mOverScrollBackground == null) { 4655 mOverScrollBackground = new Paint(); 4656 Bitmap bm = BitmapFactory.decodeResource( 4657 mContext.getResources(), 4658 com.android.internal.R.drawable.status_bar_background); 4659 mOverScrollBackground.setShader(new BitmapShader(bm, 4660 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4661 mOverScrollBorder = new Paint(); 4662 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4663 mOverScrollBorder.setStrokeWidth(0); 4664 mOverScrollBorder.setColor(0xffbbbbbb); 4665 } 4666 4667 int top = 0; 4668 int right = computeRealHorizontalScrollRange(); 4669 int bottom = top + computeRealVerticalScrollRange(); 4670 // first draw the background and anchor to the top of the view 4671 canvas.save(); 4672 canvas.translate(mScrollX, mScrollY); 4673 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4674 - mScrollY, Region.Op.DIFFERENCE); 4675 canvas.drawPaint(mOverScrollBackground); 4676 canvas.restore(); 4677 // then draw the border 4678 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4679 // next clip the region for the content 4680 canvas.clipRect(0, top, right, bottom); 4681 } 4682 4683 @Override 4684 protected void onDraw(Canvas canvas) { 4685 if (inFullScreenMode()) { 4686 return; // no need to draw anything if we aren't visible. 4687 } 4688 // if mNativeClass is 0, the WebView is either destroyed or not 4689 // initialized. In either case, just draw the background color and return 4690 if (mNativeClass == 0) { 4691 canvas.drawColor(mBackgroundColor); 4692 return; 4693 } 4694 4695 // if both mContentWidth and mContentHeight are 0, it means there is no 4696 // valid Picture passed to WebView yet. This can happen when WebView 4697 // just starts. Draw the background and return. 4698 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4699 canvas.drawColor(mBackgroundColor); 4700 return; 4701 } 4702 4703 if (canvas.isHardwareAccelerated()) { 4704 mZoomManager.setHardwareAccelerated(); 4705 } else { 4706 mWebViewCore.resumeWebKitDraw(); 4707 } 4708 4709 int saveCount = canvas.save(); 4710 if (mInOverScrollMode && !getSettings() 4711 .getUseWebViewBackgroundForOverscrollBackground()) { 4712 drawOverScrollBackground(canvas); 4713 } 4714 if (mTitleBar != null) { 4715 canvas.translate(0, getTitleHeight()); 4716 } 4717 boolean drawNativeRings = !sDisableNavcache; 4718 drawContent(canvas, drawNativeRings); 4719 canvas.restoreToCount(saveCount); 4720 4721 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4722 invalidate(); 4723 } 4724 mWebViewCore.signalRepaintDone(); 4725 4726 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4727 invalidate(); 4728 } 4729 4730 if (mFocusTransition != null) { 4731 mFocusTransition.draw(canvas); 4732 } else if (shouldDrawHighlightRect()) { 4733 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4734 Rect r = new Rect(); 4735 while (iter.next(r)) { 4736 canvas.drawRect(r, mTouchHightlightPaint); 4737 } 4738 } 4739 if (DEBUG_TOUCH_HIGHLIGHT) { 4740 if (getSettings().getNavDump()) { 4741 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4742 if (mTouchCrossHairColor == null) { 4743 mTouchCrossHairColor = new Paint(); 4744 mTouchCrossHairColor.setColor(Color.RED); 4745 } 4746 canvas.drawLine(mTouchHighlightX - mNavSlop, 4747 mTouchHighlightY - mNavSlop, mTouchHighlightX 4748 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4749 + 1, mTouchCrossHairColor); 4750 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4751 mTouchHighlightY - mNavSlop, mTouchHighlightX 4752 - mNavSlop, 4753 mTouchHighlightY + mNavSlop + 1, 4754 mTouchCrossHairColor); 4755 } 4756 } 4757 } 4758 } 4759 4760 private void removeTouchHighlight() { 4761 mWebViewCore.removeMessages(EventHub.HIT_TEST); 4762 mPrivateHandler.removeMessages(HIT_TEST_RESULT); 4763 setTouchHighlightRects(null); 4764 } 4765 4766 @Override 4767 public void setLayoutParams(ViewGroup.LayoutParams params) { 4768 if (params.height == LayoutParams.WRAP_CONTENT) { 4769 mWrapContent = true; 4770 } 4771 super.setLayoutParams(params); 4772 } 4773 4774 @Override 4775 public boolean performLongClick() { 4776 // performLongClick() is the result of a delayed message. If we switch 4777 // to windows overview, the WebView will be temporarily removed from the 4778 // view system. In that case, do nothing. 4779 if (getParent() == null) return false; 4780 4781 // A multi-finger gesture can look like a long press; make sure we don't take 4782 // long press actions if we're scaling. 4783 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4784 if (detector != null && detector.isInProgress()) { 4785 return false; 4786 } 4787 4788 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4789 // Send the click so that the textfield is in focus 4790 centerKeyPressOnTextField(); 4791 rebuildWebTextView(); 4792 } else { 4793 clearTextEntry(); 4794 } 4795 if (inEditingMode()) { 4796 // Since we just called rebuildWebTextView, the layout is not set 4797 // properly. Update it so it can correctly find the word to select. 4798 mWebTextView.ensureLayout(); 4799 // Provide a touch down event to WebTextView, which will allow it 4800 // to store the location to use in performLongClick. 4801 AbsoluteLayout.LayoutParams params 4802 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4803 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4804 mLastTouchTime, MotionEvent.ACTION_DOWN, 4805 mLastTouchX - params.x + mScrollX, 4806 mLastTouchY - params.y + mScrollY, 0); 4807 mWebTextView.dispatchTouchEvent(fake); 4808 return mWebTextView.performLongClick(); 4809 } 4810 if (mSelectingText) return false; // long click does nothing on selection 4811 /* if long click brings up a context menu, the super function 4812 * returns true and we're done. Otherwise, nothing happened when 4813 * the user clicked. */ 4814 if (super.performLongClick()) { 4815 return true; 4816 } 4817 /* In the case where the application hasn't already handled the long 4818 * click action, look for a word under the click. If one is found, 4819 * animate the text selection into view. 4820 * FIXME: no animation code yet */ 4821 final boolean isSelecting = selectText(); 4822 if (isSelecting) { 4823 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4824 } else if (focusCandidateIsEditableText()) { 4825 mSelectCallback = new SelectActionModeCallback(); 4826 mSelectCallback.setWebView(this); 4827 mSelectCallback.setTextSelected(false); 4828 startActionMode(mSelectCallback); 4829 } 4830 return isSelecting; 4831 } 4832 4833 /** 4834 * Select the word at the last click point. 4835 * 4836 * @hide This is an implementation detail. 4837 */ 4838 public boolean selectText() { 4839 int x = viewToContentX(mLastTouchX + mScrollX); 4840 int y = viewToContentY(mLastTouchY + mScrollY); 4841 return selectText(x, y); 4842 } 4843 4844 /** 4845 * Select the word at the indicated content coordinates. 4846 */ 4847 boolean selectText(int x, int y) { 4848 mWebViewCore.sendMessage(EventHub.SELECT_WORD_AT, x, y); 4849 return true; 4850 } 4851 4852 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4853 4854 @Override 4855 protected void onConfigurationChanged(Configuration newConfig) { 4856 mCachedOverlappingActionModeHeight = -1; 4857 if (mSelectingText && mOrientation != newConfig.orientation) { 4858 selectionDone(); 4859 } 4860 mOrientation = newConfig.orientation; 4861 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 4862 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4863 } 4864 } 4865 4866 /** 4867 * Keep track of the Callback so we can end its ActionMode or remove its 4868 * titlebar. 4869 */ 4870 private SelectActionModeCallback mSelectCallback; 4871 4872 // These values are possible options for didUpdateWebTextViewDimensions. 4873 private static final int FULLY_ON_SCREEN = 0; 4874 private static final int INTERSECTS_SCREEN = 1; 4875 private static final int ANYWHERE = 2; 4876 4877 /** 4878 * Check to see if the focused textfield/textarea is still on screen. If it 4879 * is, update the the dimensions and location of WebTextView. Otherwise, 4880 * remove the WebTextView. Should be called when the zoom level changes. 4881 * @param intersection How to determine whether the textfield/textarea is 4882 * still on screen. 4883 * @return boolean True if the textfield/textarea is still on screen and the 4884 * dimensions/location of WebTextView have been updated. 4885 */ 4886 private boolean didUpdateWebTextViewDimensions(int intersection) { 4887 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4888 Rect vBox = contentToViewRect(contentBounds); 4889 Rect visibleRect = new Rect(); 4890 calcOurVisibleRect(visibleRect); 4891 offsetByLayerScrollPosition(vBox); 4892 // If the textfield is on screen, place the WebTextView in 4893 // its new place, accounting for our new scroll/zoom values, 4894 // and adjust its textsize. 4895 boolean onScreen; 4896 switch (intersection) { 4897 case FULLY_ON_SCREEN: 4898 onScreen = visibleRect.contains(vBox); 4899 break; 4900 case INTERSECTS_SCREEN: 4901 onScreen = Rect.intersects(visibleRect, vBox); 4902 break; 4903 case ANYWHERE: 4904 onScreen = true; 4905 break; 4906 default: 4907 throw new AssertionError( 4908 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4909 } 4910 if (onScreen) { 4911 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4912 vBox.height()); 4913 mWebTextView.updateTextSize(); 4914 updateWebTextViewPadding(); 4915 return true; 4916 } else { 4917 // The textfield is now off screen. The user probably 4918 // was not zooming to see the textfield better. Remove 4919 // the WebTextView. If the user types a key, and the 4920 // textfield is still in focus, we will reconstruct 4921 // the WebTextView and scroll it back on screen. 4922 mWebTextView.remove(); 4923 return false; 4924 } 4925 } 4926 4927 private void offsetByLayerScrollPosition(Rect box) { 4928 if ((mCurrentScrollingLayerId != 0) 4929 && (mCurrentScrollingLayerId == nativeFocusCandidateLayerId())) { 4930 box.offsetTo(box.left - mScrollingLayerRect.left, 4931 box.top - mScrollingLayerRect.top); 4932 } 4933 } 4934 4935 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4936 boolean isPictureAfterFirstLayout) { 4937 if (mNativeClass == 0) 4938 return; 4939 boolean queueFull; 4940 queueFull = nativeSetBaseLayer(mNativeClass, layer, invalRegion, 4941 showVisualIndicator, isPictureAfterFirstLayout); 4942 4943 if (layer == 0 || isPictureAfterFirstLayout) { 4944 mWebViewCore.resumeWebKitDraw(); 4945 } else if (queueFull) { 4946 // temporarily disable webkit draw throttling 4947 // TODO: re-enable 4948 // mWebViewCore.pauseWebKitDraw(); 4949 } 4950 4951 if (mHTML5VideoViewProxy != null) { 4952 mHTML5VideoViewProxy.setBaseLayer(layer); 4953 } 4954 } 4955 4956 int getBaseLayer() { 4957 if (mNativeClass == 0) { 4958 return 0; 4959 } 4960 return nativeGetBaseLayer(); 4961 } 4962 4963 private void onZoomAnimationStart() { 4964 // If it is in password mode, turn it off so it does not draw misplaced. 4965 if (inEditingMode()) { 4966 mWebTextView.setVisibility(INVISIBLE); 4967 } 4968 } 4969 4970 private void onZoomAnimationEnd() { 4971 // adjust the edit text view if needed 4972 if (inEditingMode() 4973 && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) { 4974 // If it is a password field, start drawing the WebTextView once 4975 // again. 4976 mWebTextView.setVisibility(VISIBLE); 4977 } 4978 } 4979 4980 void onFixedLengthZoomAnimationStart() { 4981 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4982 onZoomAnimationStart(); 4983 } 4984 4985 void onFixedLengthZoomAnimationEnd() { 4986 if (!mBlockWebkitViewMessages && !mSelectingText) { 4987 WebViewCore.resumeUpdatePicture(mWebViewCore); 4988 } 4989 onZoomAnimationEnd(); 4990 } 4991 4992 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4993 Paint.DITHER_FLAG | 4994 Paint.SUBPIXEL_TEXT_FLAG; 4995 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4996 Paint.DITHER_FLAG; 4997 4998 private final DrawFilter mZoomFilter = 4999 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 5000 // If we need to trade better quality for speed, set mScrollFilter to null 5001 private final DrawFilter mScrollFilter = 5002 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 5003 5004 private void drawCoreAndCursorRing(Canvas canvas, int color, 5005 boolean drawCursorRing) { 5006 if (mDrawHistory) { 5007 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 5008 canvas.drawPicture(mHistoryPicture); 5009 return; 5010 } 5011 if (mNativeClass == 0) return; 5012 5013 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 5014 boolean animateScroll = ((!mScroller.isFinished() 5015 || mVelocityTracker != null) 5016 && (mTouchMode != TOUCH_DRAG_MODE || 5017 mHeldMotionless != MOTIONLESS_TRUE)) 5018 || mDeferTouchMode == TOUCH_DRAG_MODE; 5019 if (mTouchMode == TOUCH_DRAG_MODE) { 5020 if (mHeldMotionless == MOTIONLESS_PENDING) { 5021 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5022 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5023 mHeldMotionless = MOTIONLESS_FALSE; 5024 } 5025 if (mHeldMotionless == MOTIONLESS_FALSE) { 5026 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5027 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 5028 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5029 .obtainMessage(AWAKEN_SCROLL_BARS), 5030 ViewConfiguration.getScrollDefaultDelay()); 5031 mHeldMotionless = MOTIONLESS_PENDING; 5032 } 5033 } 5034 int saveCount = canvas.save(); 5035 if (animateZoom) { 5036 mZoomManager.animateZoom(canvas); 5037 } else if (!canvas.isHardwareAccelerated()) { 5038 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 5039 } 5040 5041 boolean UIAnimationsRunning = false; 5042 // Currently for each draw we compute the animation values; 5043 // We may in the future decide to do that independently. 5044 if (mNativeClass != 0 && !canvas.isHardwareAccelerated() 5045 && nativeEvaluateLayersAnimations(mNativeClass)) { 5046 UIAnimationsRunning = true; 5047 // If we have unfinished (or unstarted) animations, 5048 // we ask for a repaint. We only need to do this in software 5049 // rendering (with hardware rendering we already have a different 5050 // method of requesting a repaint) 5051 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 5052 invalidate(); 5053 } 5054 5055 // decide which adornments to draw 5056 int extras = DRAW_EXTRAS_NONE; 5057 if (!mFindIsUp) { 5058 if (mSelectingText) { 5059 extras = DRAW_EXTRAS_SELECTION; 5060 } else if (drawCursorRing) { 5061 extras = DRAW_EXTRAS_CURSOR_RING; 5062 } 5063 } 5064 if (DebugFlags.WEB_VIEW) { 5065 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 5066 + " mSelectingText=" + mSelectingText 5067 + " nativePageShouldHandleShiftAndArrows()=" 5068 + nativePageShouldHandleShiftAndArrows() 5069 + " animateZoom=" + animateZoom 5070 + " extras=" + extras); 5071 } 5072 5073 calcOurContentVisibleRectF(mVisibleContentRect); 5074 if (canvas.isHardwareAccelerated()) { 5075 Rect glRectViewport = mGLViewportEmpty ? null : mGLRectViewport; 5076 Rect viewRectViewport = mGLViewportEmpty ? null : mViewRectViewport; 5077 5078 int functor = nativeGetDrawGLFunction(mNativeClass, glRectViewport, 5079 viewRectViewport, mVisibleContentRect, getScale(), extras); 5080 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 5081 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 5082 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 5083 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 5084 } 5085 5086 } else { 5087 DrawFilter df = null; 5088 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 5089 df = mZoomFilter; 5090 } else if (animateScroll) { 5091 df = mScrollFilter; 5092 } 5093 canvas.setDrawFilter(df); 5094 // XXX: Revisit splitting content. Right now it causes a 5095 // synchronization problem with layers. 5096 int content = nativeDraw(canvas, mVisibleContentRect, color, 5097 extras, false); 5098 canvas.setDrawFilter(null); 5099 if (!mBlockWebkitViewMessages && content != 0) { 5100 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 5101 } 5102 } 5103 5104 canvas.restoreToCount(saveCount); 5105 if (mSelectingText) { 5106 drawTextSelectionHandles(canvas); 5107 } 5108 5109 if (extras == DRAW_EXTRAS_CURSOR_RING) { 5110 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 5111 mTouchMode = TOUCH_SHORTPRESS_MODE; 5112 } 5113 } 5114 if (mFocusSizeChanged) { 5115 mFocusSizeChanged = false; 5116 // If we are zooming, this will get handled above, when the zoom 5117 // finishes. We also do not need to do this unless the WebTextView 5118 // is showing. With hardware acceleration, the pageSwapCallback() 5119 // updates the WebTextView position in sync with page swapping 5120 if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) { 5121 didUpdateWebTextViewDimensions(ANYWHERE); 5122 } 5123 } 5124 } 5125 5126 private void drawTextSelectionHandles(Canvas canvas) { 5127 int[] handles = new int[4]; 5128 getSelectionHandles(handles); 5129 int start_x = contentToViewDimension(handles[0]); 5130 int start_y = contentToViewDimension(handles[1]); 5131 int end_x = contentToViewDimension(handles[2]); 5132 int end_y = contentToViewDimension(handles[3]); 5133 5134 if (mIsCaretSelection) { 5135 if (mSelectHandleCenter == null) { 5136 mSelectHandleCenter = mContext.getResources().getDrawable( 5137 com.android.internal.R.drawable.text_select_handle_middle); 5138 } 5139 // Caret handle is centered 5140 start_x -= (mSelectHandleCenter.getIntrinsicWidth() / 2); 5141 mSelectHandleCenter.setBounds(start_x, start_y, 5142 start_x + mSelectHandleCenter.getIntrinsicWidth(), 5143 start_y + mSelectHandleCenter.getIntrinsicHeight()); 5144 mSelectHandleCenter.draw(canvas); 5145 } else { 5146 if (mSelectHandleLeft == null) { 5147 mSelectHandleLeft = mContext.getResources().getDrawable( 5148 com.android.internal.R.drawable.text_select_handle_left); 5149 } 5150 // Magic formula copied from TextView 5151 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 5152 mSelectHandleLeft.setBounds(start_x, start_y, 5153 start_x + mSelectHandleLeft.getIntrinsicWidth(), 5154 start_y + mSelectHandleLeft.getIntrinsicHeight()); 5155 if (mSelectHandleRight == null) { 5156 mSelectHandleRight = mContext.getResources().getDrawable( 5157 com.android.internal.R.drawable.text_select_handle_right); 5158 } 5159 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 5160 mSelectHandleRight.setBounds(end_x, end_y, 5161 end_x + mSelectHandleRight.getIntrinsicWidth(), 5162 end_y + mSelectHandleRight.getIntrinsicHeight()); 5163 mSelectHandleLeft.draw(canvas); 5164 mSelectHandleRight.draw(canvas); 5165 } 5166 } 5167 5168 /** 5169 * Takes an int[4] array as an output param with the values being 5170 * startX, startY, endX, endY 5171 */ 5172 private void getSelectionHandles(int[] handles) { 5173 handles[0] = mSelectCursorBase.right; 5174 handles[1] = mSelectCursorBase.bottom - 5175 (mSelectCursorBase.height() / 4); 5176 handles[2] = mSelectCursorExtent.left; 5177 handles[3] = mSelectCursorExtent.bottom 5178 - (mSelectCursorExtent.height() / 4); 5179 if (!nativeIsBaseFirst(mNativeClass)) { 5180 int swap = handles[0]; 5181 handles[0] = handles[2]; 5182 handles[2] = swap; 5183 swap = handles[1]; 5184 handles[1] = handles[3]; 5185 handles[3] = swap; 5186 } 5187 } 5188 5189 // draw history 5190 private boolean mDrawHistory = false; 5191 private Picture mHistoryPicture = null; 5192 private int mHistoryWidth = 0; 5193 private int mHistoryHeight = 0; 5194 5195 // Only check the flag, can be called from WebCore thread 5196 boolean drawHistory() { 5197 return mDrawHistory; 5198 } 5199 5200 int getHistoryPictureWidth() { 5201 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 5202 } 5203 5204 // Should only be called in UI thread 5205 void switchOutDrawHistory() { 5206 if (null == mWebViewCore) return; // CallbackProxy may trigger this 5207 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 5208 mDrawHistory = false; 5209 mHistoryPicture = null; 5210 invalidate(); 5211 int oldScrollX = mScrollX; 5212 int oldScrollY = mScrollY; 5213 mScrollX = pinLocX(mScrollX); 5214 mScrollY = pinLocY(mScrollY); 5215 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 5216 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 5217 } else { 5218 sendOurVisibleRect(); 5219 } 5220 } 5221 } 5222 5223 WebViewCore.CursorData cursorData() { 5224 WebViewCore.CursorData result = cursorDataNoPosition(); 5225 Point position = nativeCursorPosition(); 5226 result.mX = position.x; 5227 result.mY = position.y; 5228 return result; 5229 } 5230 5231 WebViewCore.CursorData cursorDataNoPosition() { 5232 WebViewCore.CursorData result = new WebViewCore.CursorData(); 5233 result.mMoveGeneration = nativeMoveGeneration(); 5234 result.mFrame = nativeCursorFramePointer(); 5235 return result; 5236 } 5237 5238 /** 5239 * Delete text from start to end in the focused textfield. If there is no 5240 * focus, or if start == end, silently fail. If start and end are out of 5241 * order, swap them. 5242 * @param start Beginning of selection to delete. 5243 * @param end End of selection to delete. 5244 */ 5245 /* package */ void deleteSelection(int start, int end) { 5246 mTextGeneration++; 5247 WebViewCore.TextSelectionData data 5248 = new WebViewCore.TextSelectionData(start, end, 0); 5249 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 5250 data); 5251 } 5252 5253 /** 5254 * Set the selection to (start, end) in the focused textfield. If start and 5255 * end are out of order, swap them. 5256 * @param start Beginning of selection. 5257 * @param end End of selection. 5258 */ 5259 /* package */ void setSelection(int start, int end) { 5260 if (mWebViewCore != null) { 5261 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 5262 } 5263 } 5264 5265 @Override 5266 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 5267 if (mInputConnection == null) { 5268 mInputConnection = new WebViewInputConnection(); 5269 } 5270 mInputConnection.setupEditorInfo(outAttrs); 5271 return mInputConnection; 5272 } 5273 5274 /** 5275 * Called in response to a message from webkit telling us that the soft 5276 * keyboard should be launched. 5277 */ 5278 private void displaySoftKeyboard(boolean isTextView) { 5279 InputMethodManager imm = (InputMethodManager) 5280 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 5281 5282 // bring it back to the default level scale so that user can enter text 5283 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 5284 if (zoom) { 5285 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 5286 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 5287 } 5288 if (isTextView) { 5289 rebuildWebTextView(); 5290 if (inEditingMode()) { 5291 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 5292 if (zoom) { 5293 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 5294 } 5295 return; 5296 } 5297 } 5298 // Used by plugins and contentEditable. 5299 // Also used if the navigation cache is out of date, and 5300 // does not recognize that a textfield is in focus. In that 5301 // case, use WebView as the targeted view. 5302 // see http://b/issue?id=2457459 5303 imm.showSoftInput(this, 0); 5304 } 5305 5306 // Called by WebKit to instruct the UI to hide the keyboard 5307 private void hideSoftKeyboard() { 5308 InputMethodManager imm = InputMethodManager.peekInstance(); 5309 if (imm != null && (imm.isActive(this) 5310 || (inEditingMode() && imm.isActive(mWebTextView)))) { 5311 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 5312 } 5313 } 5314 5315 /* 5316 * This method checks the current focus and cursor and potentially rebuilds 5317 * mWebTextView to have the appropriate properties, such as password, 5318 * multiline, and what text it contains. It also removes it if necessary. 5319 */ 5320 /* package */ void rebuildWebTextView() { 5321 if (!sEnableWebTextView) { 5322 return; // always use WebKit's text entry 5323 } 5324 // If the WebView does not have focus, do nothing until it gains focus. 5325 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 5326 return; 5327 } 5328 boolean alreadyThere = inEditingMode(); 5329 // inEditingMode can only return true if mWebTextView is non-null, 5330 // so we can safely call remove() if (alreadyThere) 5331 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 5332 if (alreadyThere) { 5333 mWebTextView.remove(); 5334 } 5335 return; 5336 } 5337 // At this point, we know we have found an input field, so go ahead 5338 // and create the WebTextView if necessary. 5339 if (mWebTextView == null) { 5340 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 5341 // Initialize our generation number. 5342 mTextGeneration = 0; 5343 } 5344 mWebTextView.updateTextSize(); 5345 updateWebTextViewPosition(); 5346 String text = nativeFocusCandidateText(); 5347 int nodePointer = nativeFocusCandidatePointer(); 5348 // This needs to be called before setType, which may call 5349 // requestFormData, and it needs to have the correct nodePointer. 5350 mWebTextView.setNodePointer(nodePointer); 5351 mWebTextView.setType(nativeFocusCandidateType()); 5352 // Gravity needs to be set after setType 5353 mWebTextView.setGravityForRtl(nativeFocusCandidateIsRtlText()); 5354 if (null == text) { 5355 if (DebugFlags.WEB_VIEW) { 5356 Log.v(LOGTAG, "rebuildWebTextView null == text"); 5357 } 5358 text = ""; 5359 } 5360 mWebTextView.setTextAndKeepSelection(text); 5361 InputMethodManager imm = InputMethodManager.peekInstance(); 5362 if (imm != null && imm.isActive(mWebTextView)) { 5363 imm.restartInput(mWebTextView); 5364 mWebTextView.clearComposingText(); 5365 } 5366 if (isFocused()) { 5367 mWebTextView.requestFocus(); 5368 } 5369 } 5370 5371 private void updateWebTextViewPosition() { 5372 Rect visibleRect = new Rect(); 5373 calcOurContentVisibleRect(visibleRect); 5374 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 5375 // should be in content coordinates. 5376 Rect bounds = nativeFocusCandidateNodeBounds(); 5377 Rect vBox = contentToViewRect(bounds); 5378 offsetByLayerScrollPosition(vBox); 5379 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 5380 if (!Rect.intersects(bounds, visibleRect)) { 5381 revealSelection(); 5382 } 5383 updateWebTextViewPadding(); 5384 } 5385 5386 /** 5387 * Update the padding of mWebTextView based on the native textfield/textarea 5388 */ 5389 void updateWebTextViewPadding() { 5390 Rect paddingRect = nativeFocusCandidatePaddingRect(); 5391 if (paddingRect != null) { 5392 // Use contentToViewDimension since these are the dimensions of 5393 // the padding. 5394 mWebTextView.setPadding( 5395 contentToViewDimension(paddingRect.left), 5396 contentToViewDimension(paddingRect.top), 5397 contentToViewDimension(paddingRect.right), 5398 contentToViewDimension(paddingRect.bottom)); 5399 } 5400 } 5401 5402 /** 5403 * Tell webkit to put the cursor on screen. 5404 */ 5405 /* package */ void revealSelection() { 5406 if (mWebViewCore != null) { 5407 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 5408 } 5409 } 5410 5411 /** 5412 * Called by WebTextView to find saved form data associated with the 5413 * textfield 5414 * @param name Name of the textfield. 5415 * @param nodePointer Pointer to the node of the textfield, so it can be 5416 * compared to the currently focused textfield when the data is 5417 * retrieved. 5418 * @param autoFillable true if WebKit has determined this field is part of 5419 * a form that can be auto filled. 5420 * @param autoComplete true if the attribute "autocomplete" is set to true 5421 * on the textfield. 5422 */ 5423 /* package */ void requestFormData(String name, int nodePointer, 5424 boolean autoFillable, boolean autoComplete) { 5425 if (mWebViewCore.getSettings().getSaveFormData()) { 5426 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 5427 update.arg1 = nodePointer; 5428 RequestFormData updater = new RequestFormData(name, getUrl(), 5429 update, autoFillable, autoComplete); 5430 Thread t = new Thread(updater); 5431 t.start(); 5432 } 5433 } 5434 5435 /** 5436 * Pass a message to find out the <label> associated with the <input> 5437 * identified by nodePointer 5438 * @param framePointer Pointer to the frame containing the <input> node 5439 * @param nodePointer Pointer to the node for which a <label> is desired. 5440 */ 5441 /* package */ void requestLabel(int framePointer, int nodePointer) { 5442 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 5443 nodePointer); 5444 } 5445 5446 /* 5447 * This class requests an Adapter for the WebTextView which shows past 5448 * entries stored in the database. It is a Runnable so that it can be done 5449 * in its own thread, without slowing down the UI. 5450 */ 5451 private class RequestFormData implements Runnable { 5452 private String mName; 5453 private String mUrl; 5454 private Message mUpdateMessage; 5455 private boolean mAutoFillable; 5456 private boolean mAutoComplete; 5457 private WebSettings mWebSettings; 5458 5459 public RequestFormData(String name, String url, Message msg, 5460 boolean autoFillable, boolean autoComplete) { 5461 mName = name; 5462 mUrl = WebTextView.urlForAutoCompleteData(url); 5463 mUpdateMessage = msg; 5464 mAutoFillable = autoFillable; 5465 mAutoComplete = autoComplete; 5466 mWebSettings = getSettings(); 5467 } 5468 5469 @Override 5470 public void run() { 5471 ArrayList<String> pastEntries = new ArrayList<String>(); 5472 5473 if (mAutoFillable) { 5474 // Note that code inside the adapter click handler in WebTextView depends 5475 // on the AutoFill item being at the top of the drop down list. If you change 5476 // the order, make sure to do it there too! 5477 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 5478 pastEntries.add(getResources().getText( 5479 com.android.internal.R.string.autofill_this_form).toString() + 5480 " " + 5481 mAutoFillData.getPreviewString()); 5482 mWebTextView.setAutoFillProfileIsSet(true); 5483 } else { 5484 // There is no autofill profile set up yet, so add an option that 5485 // will invite the user to set their profile up. 5486 pastEntries.add(getResources().getText( 5487 com.android.internal.R.string.setup_autofill).toString()); 5488 mWebTextView.setAutoFillProfileIsSet(false); 5489 } 5490 } 5491 5492 if (mAutoComplete) { 5493 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 5494 } 5495 5496 if (pastEntries.size() > 0) { 5497 AutoCompleteAdapter adapter = new 5498 AutoCompleteAdapter(mContext, pastEntries); 5499 mUpdateMessage.obj = adapter; 5500 mUpdateMessage.sendToTarget(); 5501 } 5502 } 5503 } 5504 5505 /** 5506 * Dump the display tree to "/sdcard/displayTree.txt" 5507 * 5508 * @hide debug only 5509 */ 5510 public void dumpDisplayTree() { 5511 nativeDumpDisplayTree(getUrl()); 5512 } 5513 5514 /** 5515 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 5516 * "/sdcard/domTree.txt" 5517 * 5518 * @hide debug only 5519 */ 5520 public void dumpDomTree(boolean toFile) { 5521 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 5522 } 5523 5524 /** 5525 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 5526 * to "/sdcard/renderTree.txt" 5527 * 5528 * @hide debug only 5529 */ 5530 public void dumpRenderTree(boolean toFile) { 5531 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 5532 } 5533 5534 /** 5535 * Called by DRT on UI thread, need to proxy to WebCore thread. 5536 * 5537 * @hide debug only 5538 */ 5539 public void useMockDeviceOrientation() { 5540 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 5541 } 5542 5543 /** 5544 * Called by DRT on WebCore thread. 5545 * 5546 * @hide debug only 5547 */ 5548 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 5549 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 5550 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 5551 canProvideGamma, gamma); 5552 } 5553 5554 // This is used to determine long press with the center key. Does not 5555 // affect long press with the trackball/touch. 5556 private boolean mGotCenterDown = false; 5557 5558 @Override 5559 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 5560 if (mBlockWebkitViewMessages) { 5561 return false; 5562 } 5563 // send complex characters to webkit for use by JS and plugins 5564 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 5565 // pass the key to DOM 5566 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5567 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5568 // return true as DOM handles the key 5569 return true; 5570 } 5571 return false; 5572 } 5573 5574 private boolean isEnterActionKey(int keyCode) { 5575 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 5576 || keyCode == KeyEvent.KEYCODE_ENTER 5577 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 5578 } 5579 5580 @Override 5581 public boolean onKeyDown(int keyCode, KeyEvent event) { 5582 if (DebugFlags.WEB_VIEW) { 5583 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 5584 + "keyCode=" + keyCode 5585 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5586 } 5587 if (mIsCaretSelection) { 5588 selectionDone(); 5589 } 5590 if (mBlockWebkitViewMessages) { 5591 return false; 5592 } 5593 5594 // don't implement accelerator keys here; defer to host application 5595 if (event.isCtrlPressed()) { 5596 return false; 5597 } 5598 5599 if (mNativeClass == 0) { 5600 return false; 5601 } 5602 5603 // do this hack up front, so it always works, regardless of touch-mode 5604 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 5605 mAutoRedraw = !mAutoRedraw; 5606 if (mAutoRedraw) { 5607 invalidate(); 5608 } 5609 return true; 5610 } 5611 5612 // Bubble up the key event if 5613 // 1. it is a system key; or 5614 // 2. the host application wants to handle it; 5615 if (event.isSystem() 5616 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5617 return false; 5618 } 5619 5620 // accessibility support 5621 if (accessibilityScriptInjected()) { 5622 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5623 // if an accessibility script is injected we delegate to it the key handling. 5624 // this script is a screen reader which is a fully fledged solution for blind 5625 // users to navigate in and interact with web pages. 5626 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5627 return true; 5628 } else { 5629 // Clean up if accessibility was disabled after loading the current URL. 5630 mAccessibilityScriptInjected = false; 5631 } 5632 } else if (mAccessibilityInjector != null) { 5633 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5634 if (mAccessibilityInjector.onKeyEvent(event)) { 5635 // if an accessibility injector is present (no JavaScript enabled or the site 5636 // opts out injecting our JavaScript screen reader) we let it decide whether 5637 // to act on and consume the event. 5638 return true; 5639 } 5640 } else { 5641 // Clean up if accessibility was disabled after loading the current URL. 5642 mAccessibilityInjector = null; 5643 } 5644 } 5645 5646 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 5647 if (event.hasNoModifiers()) { 5648 pageUp(false); 5649 return true; 5650 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5651 pageUp(true); 5652 return true; 5653 } 5654 } 5655 5656 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 5657 if (event.hasNoModifiers()) { 5658 pageDown(false); 5659 return true; 5660 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5661 pageDown(true); 5662 return true; 5663 } 5664 } 5665 5666 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 5667 pageUp(true); 5668 return true; 5669 } 5670 5671 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 5672 pageDown(true); 5673 return true; 5674 } 5675 5676 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5677 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5678 switchOutDrawHistory(); 5679 if (nativePageShouldHandleShiftAndArrows()) { 5680 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 5681 return true; 5682 } 5683 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5684 switch (keyCode) { 5685 case KeyEvent.KEYCODE_DPAD_UP: 5686 pageUp(true); 5687 return true; 5688 case KeyEvent.KEYCODE_DPAD_DOWN: 5689 pageDown(true); 5690 return true; 5691 case KeyEvent.KEYCODE_DPAD_LEFT: 5692 nativeClearCursor(); // start next trackball movement from page edge 5693 return pinScrollTo(0, mScrollY, true, 0); 5694 case KeyEvent.KEYCODE_DPAD_RIGHT: 5695 nativeClearCursor(); // start next trackball movement from page edge 5696 return pinScrollTo(mContentWidth, mScrollY, true, 0); 5697 } 5698 } 5699 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 5700 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 5701 return true; 5702 } 5703 // Bubble up the key event as WebView doesn't handle it 5704 return false; 5705 } 5706 5707 if (isEnterActionKey(keyCode)) { 5708 switchOutDrawHistory(); 5709 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 5710 || nativeCursorWantsKeyEvents(); 5711 if (event.getRepeatCount() == 0) { 5712 if (mSelectingText) { 5713 return true; // discard press if copy in progress 5714 } 5715 mGotCenterDown = true; 5716 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5717 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 5718 if (!wantsKeyEvents) return true; 5719 } 5720 // Bubble up the key event as WebView doesn't handle it 5721 if (!wantsKeyEvents) return false; 5722 } 5723 5724 if (getSettings().getNavDump()) { 5725 switch (keyCode) { 5726 case KeyEvent.KEYCODE_4: 5727 dumpDisplayTree(); 5728 break; 5729 case KeyEvent.KEYCODE_5: 5730 case KeyEvent.KEYCODE_6: 5731 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5732 break; 5733 case KeyEvent.KEYCODE_7: 5734 case KeyEvent.KEYCODE_8: 5735 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5736 break; 5737 } 5738 } 5739 5740 if (nativeCursorIsTextInput()) { 5741 // This message will put the node in focus, for the DOM's notion 5742 // of focus. 5743 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5744 nativeCursorNodePointer()); 5745 // This will bring up the WebTextView and put it in focus, for 5746 // our view system's notion of focus 5747 rebuildWebTextView(); 5748 // Now we need to pass the event to it 5749 if (inEditingMode()) { 5750 mWebTextView.setDefaultSelection(); 5751 return mWebTextView.dispatchKeyEvent(event); 5752 } 5753 } else if (nativeHasFocusNode()) { 5754 // In this case, the cursor is not on a text input, but the focus 5755 // might be. Check it, and if so, hand over to the WebTextView. 5756 rebuildWebTextView(); 5757 if (inEditingMode()) { 5758 mWebTextView.setDefaultSelection(); 5759 return mWebTextView.dispatchKeyEvent(event); 5760 } 5761 } 5762 5763 // TODO: should we pass all the keys to DOM or check the meta tag 5764 if (nativeCursorWantsKeyEvents() || true) { 5765 // pass the key to DOM 5766 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5767 // return true as DOM handles the key 5768 return true; 5769 } 5770 5771 // Bubble up the key event as WebView doesn't handle it 5772 return false; 5773 } 5774 5775 @Override 5776 public boolean onKeyUp(int keyCode, KeyEvent event) { 5777 if (DebugFlags.WEB_VIEW) { 5778 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5779 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5780 } 5781 if (mBlockWebkitViewMessages) { 5782 return false; 5783 } 5784 5785 if (mNativeClass == 0) { 5786 return false; 5787 } 5788 5789 // special CALL handling when cursor node's href is "tel:XXX" 5790 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5791 String text = nativeCursorText(); 5792 if (!nativeCursorIsTextInput() && text != null 5793 && text.startsWith(SCHEME_TEL)) { 5794 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5795 getContext().startActivity(intent); 5796 return true; 5797 } 5798 } 5799 5800 // Bubble up the key event if 5801 // 1. it is a system key; or 5802 // 2. the host application wants to handle it; 5803 if (event.isSystem() 5804 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5805 return false; 5806 } 5807 5808 // accessibility support 5809 if (accessibilityScriptInjected()) { 5810 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5811 // if an accessibility script is injected we delegate to it the key handling. 5812 // this script is a screen reader which is a fully fledged solution for blind 5813 // users to navigate in and interact with web pages. 5814 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5815 return true; 5816 } else { 5817 // Clean up if accessibility was disabled after loading the current URL. 5818 mAccessibilityScriptInjected = false; 5819 } 5820 } else if (mAccessibilityInjector != null) { 5821 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5822 if (mAccessibilityInjector.onKeyEvent(event)) { 5823 // if an accessibility injector is present (no JavaScript enabled or the site 5824 // opts out injecting our JavaScript screen reader) we let it decide whether to 5825 // act on and consume the event. 5826 return true; 5827 } 5828 } else { 5829 // Clean up if accessibility was disabled after loading the current URL. 5830 mAccessibilityInjector = null; 5831 } 5832 } 5833 5834 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5835 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5836 if (nativePageShouldHandleShiftAndArrows()) { 5837 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5838 return true; 5839 } 5840 // always handle the navigation keys in the UI thread 5841 // Bubble up the key event as WebView doesn't handle it 5842 return false; 5843 } 5844 5845 if (isEnterActionKey(keyCode)) { 5846 // remove the long press message first 5847 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5848 mGotCenterDown = false; 5849 5850 if (mSelectingText) { 5851 copySelection(); 5852 selectionDone(); 5853 return true; // discard press if copy in progress 5854 } 5855 5856 if (!sDisableNavcache) { 5857 // perform the single click 5858 Rect visibleRect = sendOurVisibleRect(); 5859 // Note that sendOurVisibleRect calls viewToContent, so the 5860 // coordinates should be in content coordinates. 5861 if (!nativeCursorIntersects(visibleRect)) { 5862 return false; 5863 } 5864 WebViewCore.CursorData data = cursorData(); 5865 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5866 playSoundEffect(SoundEffectConstants.CLICK); 5867 if (nativeCursorIsTextInput()) { 5868 rebuildWebTextView(); 5869 centerKeyPressOnTextField(); 5870 if (inEditingMode()) { 5871 mWebTextView.setDefaultSelection(); 5872 } 5873 return true; 5874 } 5875 clearTextEntry(); 5876 nativeShowCursorTimed(); 5877 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5878 return true; 5879 } 5880 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5881 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5882 nativeCursorNodePointer()); 5883 return true; 5884 } 5885 } 5886 } 5887 5888 // TODO: should we pass all the keys to DOM or check the meta tag 5889 if (nativeCursorWantsKeyEvents() || true) { 5890 // pass the key to DOM 5891 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5892 // return true as DOM handles the key 5893 return true; 5894 } 5895 5896 // Bubble up the key event as WebView doesn't handle it 5897 return false; 5898 } 5899 5900 private boolean startSelectActionMode() { 5901 mSelectCallback = new SelectActionModeCallback(); 5902 mSelectCallback.setTextSelected(!mIsCaretSelection); 5903 mSelectCallback.setWebView(this); 5904 if (startActionMode(mSelectCallback) == null) { 5905 // There is no ActionMode, so do not allow the user to modify a 5906 // selection. 5907 selectionDone(); 5908 return false; 5909 } 5910 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 5911 return true; 5912 } 5913 5914 private void syncSelectionCursors() { 5915 mSelectCursorBaseLayerId = 5916 nativeGetHandleLayerId(mNativeClass, HANDLE_ID_BASE, mSelectCursorBase); 5917 mSelectCursorExtentLayerId = 5918 nativeGetHandleLayerId(mNativeClass, HANDLE_ID_EXTENT, mSelectCursorExtent); 5919 } 5920 5921 private boolean setupWebkitSelect() { 5922 syncSelectionCursors(); 5923 ClipboardManager cm = (ClipboardManager)(mContext 5924 .getSystemService(Context.CLIPBOARD_SERVICE)); 5925 if (!mIsCaretSelection || cm.hasPrimaryClip()) { 5926 if (!startSelectActionMode()) { 5927 selectionDone(); 5928 return false; 5929 } 5930 } 5931 mSelectingText = true; 5932 mTouchMode = TOUCH_DRAG_MODE; 5933 return true; 5934 } 5935 5936 private void updateWebkitSelection() { 5937 int[] handles = null; 5938 if (mIsCaretSelection) { 5939 mSelectCursorExtent.set(mSelectCursorBase); 5940 } 5941 if (mSelectingText) { 5942 handles = new int[4]; 5943 handles[0] = mSelectCursorBase.centerX(); 5944 handles[1] = mSelectCursorBase.centerY(); 5945 handles[2] = mSelectCursorExtent.centerX(); 5946 handles[3] = mSelectCursorExtent.centerY(); 5947 } else { 5948 nativeSetTextSelection(mNativeClass, 0); 5949 } 5950 mWebViewCore.removeMessages(EventHub.SELECT_TEXT); 5951 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.SELECT_TEXT, handles); 5952 } 5953 5954 private void resetCaretTimer() { 5955 mPrivateHandler.removeMessages(CLEAR_CARET_HANDLE); 5956 if (!mSelectionStarted) { 5957 mPrivateHandler.sendEmptyMessageDelayed(CLEAR_CARET_HANDLE, 5958 CARET_HANDLE_STAMINA_MS); 5959 } 5960 } 5961 5962 /** 5963 * Use this method to put the WebView into text selection mode. 5964 * Do not rely on this functionality; it will be deprecated in the future. 5965 * @deprecated This method is now obsolete. 5966 */ 5967 @Deprecated 5968 public void emulateShiftHeld() { 5969 checkThread(); 5970 } 5971 5972 /** 5973 * Select all of the text in this WebView. 5974 * 5975 * @hide This is an implementation detail. 5976 */ 5977 public void selectAll() { 5978 mWebViewCore.sendMessage(EventHub.SELECT_ALL); 5979 } 5980 5981 /** 5982 * Called when the selection has been removed. 5983 */ 5984 void selectionDone() { 5985 if (mSelectingText) { 5986 mSelectingText = false; 5987 // finish is idempotent, so this is fine even if selectionDone was 5988 // called by mSelectCallback.onDestroyActionMode 5989 if (mSelectCallback != null) { 5990 mSelectCallback.finish(); 5991 mSelectCallback = null; 5992 } 5993 if (!mIsCaretSelection) { 5994 updateWebkitSelection(); 5995 } 5996 mIsCaretSelection = false; 5997 invalidate(); // redraw without selection 5998 mAutoScrollX = 0; 5999 mAutoScrollY = 0; 6000 mSentAutoScrollMessage = false; 6001 } 6002 } 6003 6004 /** 6005 * Copy the selection to the clipboard 6006 * 6007 * @hide This is an implementation detail. 6008 */ 6009 public boolean copySelection() { 6010 boolean copiedSomething = false; 6011 String selection = getSelection(); 6012 if (selection != null && selection != "") { 6013 if (DebugFlags.WEB_VIEW) { 6014 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 6015 } 6016 Toast.makeText(mContext 6017 , com.android.internal.R.string.text_copied 6018 , Toast.LENGTH_SHORT).show(); 6019 copiedSomething = true; 6020 ClipboardManager cm = (ClipboardManager)getContext() 6021 .getSystemService(Context.CLIPBOARD_SERVICE); 6022 cm.setText(selection); 6023 int[] handles = new int[4]; 6024 getSelectionHandles(handles); 6025 mWebViewCore.sendMessage(EventHub.COPY_TEXT, handles); 6026 } 6027 invalidate(); // remove selection region and pointer 6028 return copiedSomething; 6029 } 6030 6031 /** 6032 * Cut the selected text into the clipboard 6033 * 6034 * @hide This is an implementation detail 6035 */ 6036 public void cutSelection() { 6037 copySelection(); 6038 int[] handles = new int[4]; 6039 getSelectionHandles(handles); 6040 mWebViewCore.sendMessage(EventHub.DELETE_TEXT, handles); 6041 } 6042 6043 /** 6044 * Paste text from the clipboard to the cursor position. 6045 * 6046 * @hide This is an implementation detail 6047 */ 6048 public void pasteFromClipboard() { 6049 ClipboardManager cm = (ClipboardManager)getContext() 6050 .getSystemService(Context.CLIPBOARD_SERVICE); 6051 ClipData clipData = cm.getPrimaryClip(); 6052 if (clipData != null) { 6053 ClipData.Item clipItem = clipData.getItemAt(0); 6054 CharSequence pasteText = clipItem.getText(); 6055 if (pasteText != null) { 6056 int[] handles = new int[4]; 6057 getSelectionHandles(handles); 6058 mWebViewCore.sendMessage(EventHub.DELETE_TEXT, handles); 6059 mWebViewCore.sendMessage(EventHub.INSERT_TEXT, 6060 pasteText.toString()); 6061 } 6062 } 6063 } 6064 6065 /** 6066 * @hide This is an implementation detail. 6067 */ 6068 public SearchBox getSearchBox() { 6069 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 6070 return null; 6071 } 6072 return mWebViewCore.getBrowserFrame().getSearchBox(); 6073 } 6074 6075 /** 6076 * Returns the currently highlighted text as a string. 6077 */ 6078 String getSelection() { 6079 if (mNativeClass == 0) return ""; 6080 return nativeGetSelection(); 6081 } 6082 6083 @Override 6084 protected void onAttachedToWindow() { 6085 super.onAttachedToWindow(); 6086 if (hasWindowFocus()) setActive(true); 6087 final ViewTreeObserver treeObserver = getViewTreeObserver(); 6088 if (mGlobalLayoutListener == null) { 6089 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 6090 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 6091 } 6092 if (mScrollChangedListener == null) { 6093 mScrollChangedListener = new InnerScrollChangedListener(); 6094 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 6095 } 6096 6097 addAccessibilityApisToJavaScript(); 6098 6099 mTouchEventQueue.reset(); 6100 } 6101 6102 @Override 6103 protected void onDetachedFromWindow() { 6104 clearHelpers(); 6105 mZoomManager.dismissZoomPicker(); 6106 if (hasWindowFocus()) setActive(false); 6107 6108 final ViewTreeObserver treeObserver = getViewTreeObserver(); 6109 if (mGlobalLayoutListener != null) { 6110 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 6111 mGlobalLayoutListener = null; 6112 } 6113 if (mScrollChangedListener != null) { 6114 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 6115 mScrollChangedListener = null; 6116 } 6117 6118 removeAccessibilityApisFromJavaScript(); 6119 6120 super.onDetachedFromWindow(); 6121 } 6122 6123 @Override 6124 protected void onVisibilityChanged(View changedView, int visibility) { 6125 super.onVisibilityChanged(changedView, visibility); 6126 // The zoomManager may be null if the webview is created from XML that 6127 // specifies the view's visibility param as not visible (see http://b/2794841) 6128 if (visibility != View.VISIBLE && mZoomManager != null) { 6129 mZoomManager.dismissZoomPicker(); 6130 } 6131 updateDrawingState(); 6132 } 6133 6134 /** 6135 * @deprecated WebView no longer needs to implement 6136 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 6137 */ 6138 @Override 6139 // Cannot add @hide as this can always be accessed via the interface. 6140 @Deprecated 6141 public void onChildViewAdded(View parent, View child) {} 6142 6143 /** 6144 * @deprecated WebView no longer needs to implement 6145 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 6146 */ 6147 @Override 6148 // Cannot add @hide as this can always be accessed via the interface. 6149 @Deprecated 6150 public void onChildViewRemoved(View p, View child) {} 6151 6152 /** 6153 * @deprecated WebView should not have implemented 6154 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 6155 */ 6156 @Override 6157 // Cannot add @hide as this can always be accessed via the interface. 6158 @Deprecated 6159 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 6160 } 6161 6162 void setActive(boolean active) { 6163 if (active) { 6164 if (hasFocus()) { 6165 // If our window regained focus, and we have focus, then begin 6166 // drawing the cursor ring 6167 mDrawCursorRing = !inEditingMode(); 6168 setFocusControllerActive(true); 6169 } else { 6170 mDrawCursorRing = false; 6171 if (!inEditingMode()) { 6172 // If our window gained focus, but we do not have it, do not 6173 // draw the cursor ring. 6174 setFocusControllerActive(false); 6175 } 6176 // We do not call recordButtons here because we assume 6177 // that when we lost focus, or window focus, it got called with 6178 // false for the first parameter 6179 } 6180 } else { 6181 if (!mZoomManager.isZoomPickerVisible()) { 6182 /* 6183 * The external zoom controls come in their own window, so our 6184 * window loses focus. Our policy is to not draw the cursor ring 6185 * if our window is not focused, but this is an exception since 6186 * the user can still navigate the web page with the zoom 6187 * controls showing. 6188 */ 6189 mDrawCursorRing = false; 6190 } 6191 mKeysPressed.clear(); 6192 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6193 mTouchMode = TOUCH_DONE_MODE; 6194 setFocusControllerActive(false); 6195 } 6196 invalidate(); 6197 } 6198 6199 // To avoid drawing the cursor ring, and remove the TextView when our window 6200 // loses focus. 6201 @Override 6202 public void onWindowFocusChanged(boolean hasWindowFocus) { 6203 setActive(hasWindowFocus); 6204 if (hasWindowFocus) { 6205 JWebCoreJavaBridge.setActiveWebView(this); 6206 if (mPictureUpdatePausedForFocusChange) { 6207 WebViewCore.resumeUpdatePicture(mWebViewCore); 6208 mPictureUpdatePausedForFocusChange = false; 6209 } 6210 } else { 6211 JWebCoreJavaBridge.removeActiveWebView(this); 6212 final WebSettings settings = getSettings(); 6213 if (settings != null && settings.enableSmoothTransition() && 6214 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 6215 WebViewCore.pauseUpdatePicture(mWebViewCore); 6216 mPictureUpdatePausedForFocusChange = true; 6217 } 6218 } 6219 super.onWindowFocusChanged(hasWindowFocus); 6220 } 6221 6222 /* 6223 * Pass a message to WebCore Thread, telling the WebCore::Page's 6224 * FocusController to be "inactive" so that it will 6225 * not draw the blinking cursor. It gets set to "active" to draw the cursor 6226 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 6227 */ 6228 /* package */ void setFocusControllerActive(boolean active) { 6229 if (mWebViewCore == null) return; 6230 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 6231 // Need to send this message after the document regains focus. 6232 if (active && mListBoxMessage != null) { 6233 mWebViewCore.sendMessage(mListBoxMessage); 6234 mListBoxMessage = null; 6235 } 6236 } 6237 6238 @Override 6239 protected void onFocusChanged(boolean focused, int direction, 6240 Rect previouslyFocusedRect) { 6241 if (DebugFlags.WEB_VIEW) { 6242 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 6243 } 6244 if (focused) { 6245 // When we regain focus, if we have window focus, resume drawing 6246 // the cursor ring 6247 if (hasWindowFocus()) { 6248 mDrawCursorRing = !inEditingMode(); 6249 setFocusControllerActive(true); 6250 //} else { 6251 // The WebView has gained focus while we do not have 6252 // windowfocus. When our window lost focus, we should have 6253 // called recordButtons(false...) 6254 } 6255 } else { 6256 // When we lost focus, unless focus went to the TextView (which is 6257 // true if we are in editing mode), stop drawing the cursor ring. 6258 mDrawCursorRing = false; 6259 if (!inEditingMode()) { 6260 setFocusControllerActive(false); 6261 } 6262 mKeysPressed.clear(); 6263 } 6264 6265 super.onFocusChanged(focused, direction, previouslyFocusedRect); 6266 } 6267 6268 void setGLRectViewport() { 6269 // Use the getGlobalVisibleRect() to get the intersection among the parents 6270 // visible == false means we're clipped - send a null rect down to indicate that 6271 // we should not draw 6272 boolean visible = getGlobalVisibleRect(mGLRectViewport); 6273 if (visible) { 6274 // Then need to invert the Y axis, just for GL 6275 View rootView = getRootView(); 6276 int rootViewHeight = rootView.getHeight(); 6277 mViewRectViewport.set(mGLRectViewport); 6278 int savedWebViewBottom = mGLRectViewport.bottom; 6279 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 6280 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 6281 mGLViewportEmpty = false; 6282 } else { 6283 mGLViewportEmpty = true; 6284 } 6285 calcOurContentVisibleRectF(mVisibleContentRect); 6286 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 6287 mGLViewportEmpty ? null : mViewRectViewport, 6288 mVisibleContentRect, getScale()); 6289 } 6290 6291 /** 6292 * @hide 6293 */ 6294 @Override 6295 protected boolean setFrame(int left, int top, int right, int bottom) { 6296 boolean changed = super.setFrame(left, top, right, bottom); 6297 if (!changed && mHeightCanMeasure) { 6298 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 6299 // in WebViewCore after we get the first layout. We do call 6300 // requestLayout() when we get contentSizeChanged(). But the View 6301 // system won't call onSizeChanged if the dimension is not changed. 6302 // In this case, we need to call sendViewSizeZoom() explicitly to 6303 // notify the WebKit about the new dimensions. 6304 sendViewSizeZoom(false); 6305 } 6306 setGLRectViewport(); 6307 return changed; 6308 } 6309 6310 @Override 6311 protected void onSizeChanged(int w, int h, int ow, int oh) { 6312 super.onSizeChanged(w, h, ow, oh); 6313 6314 // adjust the max viewport width depending on the view dimensions. This 6315 // is to ensure the scaling is not going insane. So do not shrink it if 6316 // the view size is temporarily smaller, e.g. when soft keyboard is up. 6317 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 6318 if (newMaxViewportWidth > sMaxViewportWidth) { 6319 sMaxViewportWidth = newMaxViewportWidth; 6320 } 6321 6322 mZoomManager.onSizeChanged(w, h, ow, oh); 6323 6324 if (mLoadedPicture != null && mDelaySetPicture == null) { 6325 // Size changes normally result in a new picture 6326 // Re-set the loaded picture to simulate that 6327 // However, do not update the base layer as that hasn't changed 6328 setNewPicture(mLoadedPicture, false); 6329 } 6330 } 6331 6332 @Override 6333 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 6334 super.onScrollChanged(l, t, oldl, oldt); 6335 if (!mInOverScrollMode) { 6336 sendOurVisibleRect(); 6337 // update WebKit if visible title bar height changed. The logic is same 6338 // as getVisibleTitleHeightImpl. 6339 int titleHeight = getTitleHeight(); 6340 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 6341 sendViewSizeZoom(false); 6342 } 6343 } 6344 } 6345 6346 @Override 6347 public boolean dispatchKeyEvent(KeyEvent event) { 6348 switch (event.getAction()) { 6349 case KeyEvent.ACTION_DOWN: 6350 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 6351 break; 6352 case KeyEvent.ACTION_MULTIPLE: 6353 // Always accept the action. 6354 break; 6355 case KeyEvent.ACTION_UP: 6356 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 6357 if (location == -1) { 6358 // We did not receive the key down for this key, so do not 6359 // handle the key up. 6360 return false; 6361 } else { 6362 // We did receive the key down. Handle the key up, and 6363 // remove it from our pressed keys. 6364 mKeysPressed.remove(location); 6365 } 6366 break; 6367 default: 6368 // Accept the action. This should not happen, unless a new 6369 // action is added to KeyEvent. 6370 break; 6371 } 6372 if (inEditingMode() && mWebTextView.isFocused()) { 6373 // Ensure that the WebTextView gets the event, even if it does 6374 // not currently have a bounds. 6375 return mWebTextView.dispatchKeyEvent(event); 6376 } else { 6377 return super.dispatchKeyEvent(event); 6378 } 6379 } 6380 6381 /* 6382 * Here is the snap align logic: 6383 * 1. If it starts nearly horizontally or vertically, snap align; 6384 * 2. If there is a dramitic direction change, let it go; 6385 * 6386 * Adjustable parameters. Angle is the radians on a unit circle, limited 6387 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 6388 */ 6389 private static final float HSLOPE_TO_START_SNAP = .25f; 6390 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 6391 private static final float VSLOPE_TO_START_SNAP = 1.25f; 6392 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 6393 /* 6394 * These values are used to influence the average angle when entering 6395 * snap mode. If is is the first movement entering snap, we set the average 6396 * to the appropriate ideal. If the user is entering into snap after the 6397 * first movement, then we average the average angle with these values. 6398 */ 6399 private static final float ANGLE_VERT = 2f; 6400 private static final float ANGLE_HORIZ = 0f; 6401 /* 6402 * The modified moving average weight. 6403 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 6404 */ 6405 private static final float MMA_WEIGHT_N = 5; 6406 6407 private boolean hitFocusedPlugin(int contentX, int contentY) { 6408 if (DebugFlags.WEB_VIEW) { 6409 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 6410 Rect r = nativeFocusNodeBounds(); 6411 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 6412 + ", " + r.right + ", " + r.bottom + ")"); 6413 } 6414 return nativeFocusIsPlugin() 6415 && nativeFocusNodeBounds().contains(contentX, contentY); 6416 } 6417 6418 private boolean shouldForwardTouchEvent() { 6419 if (mFullScreenHolder != null) return true; 6420 if (mBlockWebkitViewMessages) return false; 6421 return mForwardTouchEvents 6422 && !mSelectingText 6423 && mPreventDefault != PREVENT_DEFAULT_IGNORE 6424 && mPreventDefault != PREVENT_DEFAULT_NO; 6425 } 6426 6427 private boolean inFullScreenMode() { 6428 return mFullScreenHolder != null; 6429 } 6430 6431 private void dismissFullScreenMode() { 6432 if (inFullScreenMode()) { 6433 mFullScreenHolder.hide(); 6434 mFullScreenHolder = null; 6435 invalidate(); 6436 } 6437 } 6438 6439 void onPinchToZoomAnimationStart() { 6440 // cancel the single touch handling 6441 cancelTouch(); 6442 onZoomAnimationStart(); 6443 } 6444 6445 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 6446 onZoomAnimationEnd(); 6447 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 6448 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 6449 // as it may trigger the unwanted fling. 6450 mTouchMode = TOUCH_PINCH_DRAG; 6451 mConfirmMove = true; 6452 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 6453 } 6454 6455 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 6456 // layer is found. 6457 private void startScrollingLayer(float x, float y) { 6458 int contentX = viewToContentX((int) x + mScrollX); 6459 int contentY = viewToContentY((int) y + mScrollY); 6460 mCurrentScrollingLayerId = nativeScrollableLayer(contentX, contentY, 6461 mScrollingLayerRect, mScrollingLayerBounds); 6462 if (mCurrentScrollingLayerId != 0) { 6463 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6464 } 6465 } 6466 6467 // 1/(density * density) used to compute the distance between points. 6468 // Computed in init(). 6469 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 6470 6471 // The distance between two points reported in onTouchEvent scaled by the 6472 // density of the screen. 6473 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 6474 6475 @Override 6476 public boolean onHoverEvent(MotionEvent event) { 6477 if (mNativeClass == 0) { 6478 return false; 6479 } 6480 WebViewCore.CursorData data = cursorDataNoPosition(); 6481 data.mX = viewToContentX((int) event.getX() + mScrollX); 6482 data.mY = viewToContentY((int) event.getY() + mScrollY); 6483 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 6484 return true; 6485 } 6486 6487 @Override 6488 public boolean onTouchEvent(MotionEvent ev) { 6489 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 6490 return false; 6491 } 6492 6493 if (DebugFlags.WEB_VIEW) { 6494 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 6495 + " mTouchMode=" + mTouchMode 6496 + " numPointers=" + ev.getPointerCount()); 6497 } 6498 6499 // If WebKit wasn't interested in this multitouch gesture, enqueue 6500 // the event for handling directly rather than making the round trip 6501 // to WebKit and back. 6502 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 6503 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 6504 } else { 6505 mTouchEventQueue.enqueueTouchEvent(ev); 6506 } 6507 6508 // Since all events are handled asynchronously, we always want the gesture stream. 6509 return true; 6510 } 6511 6512 private float calculateDragAngle(int dx, int dy) { 6513 dx = Math.abs(dx); 6514 dy = Math.abs(dy); 6515 return (float) Math.atan2(dy, dx); 6516 } 6517 6518 /* 6519 * Common code for single touch and multi-touch. 6520 * (x, y) denotes current focus point, which is the touch point for single touch 6521 * and the middle point for multi-touch. 6522 */ 6523 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 6524 long eventTime = ev.getEventTime(); 6525 6526 // Due to the touch screen edge effect, a touch closer to the edge 6527 // always snapped to the edge. As getViewWidth() can be different from 6528 // getWidth() due to the scrollbar, adjusting the point to match 6529 // getViewWidth(). Same applied to the height. 6530 x = Math.min(x, getViewWidth() - 1); 6531 y = Math.min(y, getViewHeightWithTitle() - 1); 6532 6533 int deltaX = mLastTouchX - x; 6534 int deltaY = mLastTouchY - y; 6535 int contentX = viewToContentX(x + mScrollX); 6536 int contentY = viewToContentY(y + mScrollY); 6537 6538 switch (action) { 6539 case MotionEvent.ACTION_DOWN: { 6540 mPreventDefault = PREVENT_DEFAULT_NO; 6541 mConfirmMove = false; 6542 mInitialHitTestResult = null; 6543 if (!mScroller.isFinished()) { 6544 // stop the current scroll animation, but if this is 6545 // the start of a fling, allow it to add to the current 6546 // fling's velocity 6547 mScroller.abortAnimation(); 6548 mTouchMode = TOUCH_DRAG_START_MODE; 6549 mConfirmMove = true; 6550 nativeSetIsScrolling(false); 6551 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 6552 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 6553 if (sDisableNavcache) { 6554 removeTouchHighlight(); 6555 } 6556 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 6557 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 6558 } else { 6559 // commit the short press action for the previous tap 6560 doShortPress(); 6561 mTouchMode = TOUCH_INIT_MODE; 6562 mDeferTouchProcess = !mBlockWebkitViewMessages 6563 && (!inFullScreenMode() && mForwardTouchEvents) 6564 ? hitFocusedPlugin(contentX, contentY) 6565 : false; 6566 } 6567 } else { // the normal case 6568 mTouchMode = TOUCH_INIT_MODE; 6569 mDeferTouchProcess = !mBlockWebkitViewMessages 6570 && (!inFullScreenMode() && mForwardTouchEvents) 6571 ? hitFocusedPlugin(contentX, contentY) 6572 : false; 6573 if (!mBlockWebkitViewMessages) { 6574 mWebViewCore.sendMessage( 6575 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 6576 } 6577 if (sDisableNavcache) { 6578 TouchHighlightData data = new TouchHighlightData(); 6579 data.mX = contentX; 6580 data.mY = contentY; 6581 data.mNativeLayerRect = new Rect(); 6582 data.mNativeLayer = nativeScrollableLayer( 6583 contentX, contentY, data.mNativeLayerRect, null); 6584 data.mSlop = viewToContentDimension(mNavSlop); 6585 mTouchHighlightRegion.setEmpty(); 6586 if (!mBlockWebkitViewMessages) { 6587 mTouchHighlightRequested = System.currentTimeMillis(); 6588 mWebViewCore.sendMessageAtFrontOfQueue( 6589 EventHub.HIT_TEST, data); 6590 } 6591 if (DEBUG_TOUCH_HIGHLIGHT) { 6592 if (getSettings().getNavDump()) { 6593 mTouchHighlightX = x + mScrollX; 6594 mTouchHighlightY = y + mScrollY; 6595 mPrivateHandler.postDelayed(new Runnable() { 6596 @Override 6597 public void run() { 6598 mTouchHighlightX = mTouchHighlightY = 0; 6599 invalidate(); 6600 } 6601 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 6602 } 6603 } 6604 } 6605 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 6606 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 6607 (eventTime - mLastTouchUpTime), eventTime); 6608 } 6609 mSelectionStarted = false; 6610 if (mSelectingText) { 6611 int shiftedY = y - getTitleHeight() + mScrollY; 6612 int shiftedX = x + mScrollX; 6613 if (mSelectHandleCenter != null && mSelectHandleCenter.getBounds() 6614 .contains(shiftedX, shiftedY)) { 6615 mSelectionStarted = true; 6616 mSelectDraggingCursor = mSelectCursorBase; 6617 mPrivateHandler.removeMessages(CLEAR_CARET_HANDLE); 6618 } else if (mSelectHandleLeft != null 6619 && mSelectHandleLeft.getBounds() 6620 .contains(shiftedX, shiftedY)) { 6621 mSelectionStarted = true; 6622 mSelectDraggingCursor = mSelectCursorBase; 6623 } else if (mSelectHandleRight != null 6624 && mSelectHandleRight.getBounds() 6625 .contains(shiftedX, shiftedY)) { 6626 mSelectionStarted = true; 6627 mSelectDraggingCursor = mSelectCursorExtent; 6628 } else if (mIsCaretSelection) { 6629 selectionDone(); 6630 } 6631 if (mSelectDraggingCursor != null) { 6632 mSelectDraggingOffset.set( 6633 mSelectDraggingCursor.left - contentX, 6634 mSelectDraggingCursor.top - contentY); 6635 } 6636 if (DebugFlags.WEB_VIEW) { 6637 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 6638 } 6639 } 6640 } 6641 // Trigger the link 6642 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 6643 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 6644 mPrivateHandler.sendEmptyMessageDelayed( 6645 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 6646 mPrivateHandler.sendEmptyMessageDelayed( 6647 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 6648 if (inFullScreenMode() || mDeferTouchProcess) { 6649 mPreventDefault = PREVENT_DEFAULT_YES; 6650 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 6651 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 6652 } else { 6653 mPreventDefault = PREVENT_DEFAULT_NO; 6654 } 6655 // pass the touch events from UI thread to WebCore thread 6656 if (shouldForwardTouchEvent()) { 6657 TouchEventData ted = new TouchEventData(); 6658 ted.mAction = action; 6659 ted.mIds = new int[1]; 6660 ted.mIds[0] = ev.getPointerId(0); 6661 ted.mPoints = new Point[1]; 6662 ted.mPoints[0] = new Point(contentX, contentY); 6663 ted.mPointsInView = new Point[1]; 6664 ted.mPointsInView[0] = new Point(x, y); 6665 ted.mMetaState = ev.getMetaState(); 6666 ted.mReprocess = mDeferTouchProcess; 6667 ted.mNativeLayer = nativeScrollableLayer( 6668 contentX, contentY, ted.mNativeLayerRect, null); 6669 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6670 mTouchEventQueue.preQueueTouchEventData(ted); 6671 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6672 if (mDeferTouchProcess) { 6673 // still needs to set them for compute deltaX/Y 6674 mLastTouchX = x; 6675 mLastTouchY = y; 6676 break; 6677 } 6678 if (!inFullScreenMode()) { 6679 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 6680 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6681 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6682 action, 0), TAP_TIMEOUT); 6683 } 6684 } 6685 } 6686 startTouch(x, y, eventTime); 6687 break; 6688 } 6689 case MotionEvent.ACTION_MOVE: { 6690 boolean firstMove = false; 6691 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 6692 >= mTouchSlopSquare) { 6693 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6694 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6695 mConfirmMove = true; 6696 firstMove = true; 6697 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6698 mTouchMode = TOUCH_INIT_MODE; 6699 } 6700 if (sDisableNavcache) { 6701 removeTouchHighlight(); 6702 } 6703 } 6704 if (mSelectingText && mSelectionStarted) { 6705 if (DebugFlags.WEB_VIEW) { 6706 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 6707 } 6708 ViewParent parent = getParent(); 6709 if (parent != null) { 6710 parent.requestDisallowInterceptTouchEvent(true); 6711 } 6712 if (deltaX != 0 || deltaY != 0) { 6713 mSelectDraggingCursor.offsetTo( 6714 contentX + mSelectDraggingOffset.x, 6715 contentY + mSelectDraggingOffset.y); 6716 updateWebkitSelection(); 6717 mLastTouchX = x; 6718 mLastTouchY = y; 6719 invalidate(); 6720 } 6721 break; 6722 } 6723 6724 // pass the touch events from UI thread to WebCore thread 6725 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 6726 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 6727 TouchEventData ted = new TouchEventData(); 6728 ted.mAction = action; 6729 ted.mIds = new int[1]; 6730 ted.mIds[0] = ev.getPointerId(0); 6731 ted.mPoints = new Point[1]; 6732 ted.mPoints[0] = new Point(contentX, contentY); 6733 ted.mPointsInView = new Point[1]; 6734 ted.mPointsInView[0] = new Point(x, y); 6735 ted.mMetaState = ev.getMetaState(); 6736 ted.mReprocess = mDeferTouchProcess; 6737 ted.mNativeLayer = mCurrentScrollingLayerId; 6738 ted.mNativeLayerRect.set(mScrollingLayerRect); 6739 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6740 mTouchEventQueue.preQueueTouchEventData(ted); 6741 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6742 mLastSentTouchTime = eventTime; 6743 if (mDeferTouchProcess) { 6744 break; 6745 } 6746 if (firstMove && !inFullScreenMode()) { 6747 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6748 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6749 action, 0), TAP_TIMEOUT); 6750 } 6751 } 6752 if (mTouchMode == TOUCH_DONE_MODE 6753 || mPreventDefault == PREVENT_DEFAULT_YES) { 6754 // no dragging during scroll zoom animation, or when prevent 6755 // default is yes 6756 break; 6757 } 6758 if (mVelocityTracker == null) { 6759 Log.e(LOGTAG, "Got null mVelocityTracker when " 6760 + "mPreventDefault = " + mPreventDefault 6761 + " mDeferTouchProcess = " + mDeferTouchProcess 6762 + " mTouchMode = " + mTouchMode); 6763 } else { 6764 mVelocityTracker.addMovement(ev); 6765 } 6766 6767 if (mTouchMode != TOUCH_DRAG_MODE && 6768 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6769 6770 if (!mConfirmMove) { 6771 break; 6772 } 6773 6774 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6775 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6776 // track mLastTouchTime as we may need to do fling at 6777 // ACTION_UP 6778 mLastTouchTime = eventTime; 6779 break; 6780 } 6781 6782 // Only lock dragging to one axis if we don't have a scale in progress. 6783 // Scaling implies free-roaming movement. Note this is only ever a question 6784 // if mZoomManager.supportsPanDuringZoom() is true. 6785 final ScaleGestureDetector detector = 6786 mZoomManager.getMultiTouchGestureDetector(); 6787 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6788 if (detector == null || !detector.isInProgress()) { 6789 // if it starts nearly horizontal or vertical, enforce it 6790 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6791 mSnapScrollMode = SNAP_X; 6792 mSnapPositive = deltaX > 0; 6793 mAverageAngle = ANGLE_HORIZ; 6794 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6795 mSnapScrollMode = SNAP_Y; 6796 mSnapPositive = deltaY > 0; 6797 mAverageAngle = ANGLE_VERT; 6798 } 6799 } 6800 6801 mTouchMode = TOUCH_DRAG_MODE; 6802 mLastTouchX = x; 6803 mLastTouchY = y; 6804 deltaX = 0; 6805 deltaY = 0; 6806 6807 startScrollingLayer(x, y); 6808 startDrag(); 6809 } 6810 6811 // do pan 6812 boolean done = false; 6813 boolean keepScrollBarsVisible = false; 6814 if (deltaX == 0 && deltaY == 0) { 6815 keepScrollBarsVisible = done = true; 6816 } else { 6817 mAverageAngle += 6818 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6819 / MMA_WEIGHT_N; 6820 if (mSnapScrollMode != SNAP_NONE) { 6821 if (mSnapScrollMode == SNAP_Y) { 6822 // radical change means getting out of snap mode 6823 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6824 mSnapScrollMode = SNAP_NONE; 6825 } 6826 } 6827 if (mSnapScrollMode == SNAP_X) { 6828 // radical change means getting out of snap mode 6829 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6830 mSnapScrollMode = SNAP_NONE; 6831 } 6832 } 6833 } else { 6834 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6835 mSnapScrollMode = SNAP_X; 6836 mSnapPositive = deltaX > 0; 6837 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6838 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6839 mSnapScrollMode = SNAP_Y; 6840 mSnapPositive = deltaY > 0; 6841 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6842 } 6843 } 6844 if (mSnapScrollMode != SNAP_NONE) { 6845 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6846 deltaY = 0; 6847 } else { 6848 deltaX = 0; 6849 } 6850 } 6851 mLastTouchX = x; 6852 mLastTouchY = y; 6853 6854 if (deltaX * deltaX + deltaY * deltaY > mTouchSlopSquare) { 6855 mHeldMotionless = MOTIONLESS_FALSE; 6856 nativeSetIsScrolling(true); 6857 } else { 6858 mHeldMotionless = MOTIONLESS_TRUE; 6859 nativeSetIsScrolling(false); 6860 keepScrollBarsVisible = true; 6861 } 6862 6863 mLastTouchTime = eventTime; 6864 } 6865 6866 doDrag(deltaX, deltaY); 6867 6868 // Turn off scrollbars when dragging a layer. 6869 if (keepScrollBarsVisible && 6870 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6871 if (mHeldMotionless != MOTIONLESS_TRUE) { 6872 mHeldMotionless = MOTIONLESS_TRUE; 6873 invalidate(); 6874 } 6875 // keep the scrollbar on the screen even there is no scroll 6876 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6877 false); 6878 // Post a message so that we'll keep them alive while we're not scrolling. 6879 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6880 .obtainMessage(AWAKEN_SCROLL_BARS), 6881 ViewConfiguration.getScrollDefaultDelay()); 6882 // return false to indicate that we can't pan out of the 6883 // view space 6884 return !done; 6885 } else { 6886 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6887 } 6888 break; 6889 } 6890 case MotionEvent.ACTION_UP: { 6891 if (!isFocused()) requestFocus(); 6892 // pass the touch events from UI thread to WebCore thread 6893 if (shouldForwardTouchEvent()) { 6894 TouchEventData ted = new TouchEventData(); 6895 ted.mIds = new int[1]; 6896 ted.mIds[0] = ev.getPointerId(0); 6897 ted.mAction = action; 6898 ted.mPoints = new Point[1]; 6899 ted.mPoints[0] = new Point(contentX, contentY); 6900 ted.mPointsInView = new Point[1]; 6901 ted.mPointsInView[0] = new Point(x, y); 6902 ted.mMetaState = ev.getMetaState(); 6903 ted.mReprocess = mDeferTouchProcess; 6904 ted.mNativeLayer = mCurrentScrollingLayerId; 6905 ted.mNativeLayerRect.set(mScrollingLayerRect); 6906 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6907 mTouchEventQueue.preQueueTouchEventData(ted); 6908 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6909 } 6910 mLastTouchUpTime = eventTime; 6911 if (mSentAutoScrollMessage) { 6912 mAutoScrollX = mAutoScrollY = 0; 6913 } 6914 switch (mTouchMode) { 6915 case TOUCH_DOUBLE_TAP_MODE: // double tap 6916 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6917 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6918 if (inFullScreenMode() || mDeferTouchProcess) { 6919 TouchEventData ted = new TouchEventData(); 6920 ted.mIds = new int[1]; 6921 ted.mIds[0] = ev.getPointerId(0); 6922 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6923 ted.mPoints = new Point[1]; 6924 ted.mPoints[0] = new Point(contentX, contentY); 6925 ted.mPointsInView = new Point[1]; 6926 ted.mPointsInView[0] = new Point(x, y); 6927 ted.mMetaState = ev.getMetaState(); 6928 ted.mReprocess = mDeferTouchProcess; 6929 ted.mNativeLayer = nativeScrollableLayer( 6930 contentX, contentY, 6931 ted.mNativeLayerRect, null); 6932 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6933 mTouchEventQueue.preQueueTouchEventData(ted); 6934 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6935 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6936 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6937 mTouchMode = TOUCH_DONE_MODE; 6938 } 6939 break; 6940 case TOUCH_INIT_MODE: // tap 6941 case TOUCH_SHORTPRESS_START_MODE: 6942 case TOUCH_SHORTPRESS_MODE: 6943 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6944 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6945 if (mConfirmMove) { 6946 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6947 " WebCore's response for touch down."); 6948 if (mPreventDefault != PREVENT_DEFAULT_YES 6949 && (computeMaxScrollX() > 0 6950 || computeMaxScrollY() > 0)) { 6951 // If the user has performed a very quick touch 6952 // sequence it is possible that we may get here 6953 // before WebCore has had a chance to process the events. 6954 // In this case, any call to preventDefault in the 6955 // JS touch handler will not have been executed yet. 6956 // Hence we will see both the UI (now) and WebCore 6957 // (when context switches) handling the event, 6958 // regardless of whether the web developer actually 6959 // doeses preventDefault in their touch handler. This 6960 // is the nature of our asynchronous touch model. 6961 6962 // we will not rewrite drag code here, but we 6963 // will try fling if it applies. 6964 WebViewCore.reducePriority(); 6965 // to get better performance, pause updating the 6966 // picture 6967 WebViewCore.pauseUpdatePicture(mWebViewCore); 6968 // fall through to TOUCH_DRAG_MODE 6969 } else { 6970 // WebKit may consume the touch event and modify 6971 // DOM. drawContentPicture() will be called with 6972 // animateSroll as true for better performance. 6973 // Force redraw in high-quality. 6974 invalidate(); 6975 break; 6976 } 6977 } else { 6978 if (mSelectingText) { 6979 // tapping on selection or controls does nothing 6980 if (!mSelectionStarted) { 6981 selectionDone(); 6982 } 6983 break; 6984 } 6985 // only trigger double tap if the WebView is 6986 // scalable 6987 if (mTouchMode == TOUCH_INIT_MODE 6988 && (canZoomIn() || canZoomOut())) { 6989 mPrivateHandler.sendEmptyMessageDelayed( 6990 RELEASE_SINGLE_TAP, ViewConfiguration 6991 .getDoubleTapTimeout()); 6992 } else { 6993 doShortPress(); 6994 } 6995 break; 6996 } 6997 case TOUCH_DRAG_MODE: 6998 case TOUCH_DRAG_LAYER_MODE: 6999 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 7000 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 7001 // if the user waits a while w/o moving before the 7002 // up, we don't want to do a fling 7003 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 7004 if (mVelocityTracker == null) { 7005 Log.e(LOGTAG, "Got null mVelocityTracker when " 7006 + "mPreventDefault = " 7007 + mPreventDefault 7008 + " mDeferTouchProcess = " 7009 + mDeferTouchProcess); 7010 } else { 7011 mVelocityTracker.addMovement(ev); 7012 } 7013 // set to MOTIONLESS_IGNORE so that it won't keep 7014 // removing and sending message in 7015 // drawCoreAndCursorRing() 7016 mHeldMotionless = MOTIONLESS_IGNORE; 7017 doFling(); 7018 break; 7019 } else { 7020 if (mScroller.springBack(mScrollX, mScrollY, 0, 7021 computeMaxScrollX(), 0, 7022 computeMaxScrollY())) { 7023 invalidate(); 7024 } 7025 } 7026 // redraw in high-quality, as we're done dragging 7027 mHeldMotionless = MOTIONLESS_TRUE; 7028 invalidate(); 7029 // fall through 7030 case TOUCH_DRAG_START_MODE: 7031 // TOUCH_DRAG_START_MODE should not happen for the real 7032 // device as we almost certain will get a MOVE. But this 7033 // is possible on emulator. 7034 mLastVelocity = 0; 7035 WebViewCore.resumePriority(); 7036 if (!mSelectingText) { 7037 WebViewCore.resumeUpdatePicture(mWebViewCore); 7038 } 7039 break; 7040 } 7041 stopTouch(); 7042 break; 7043 } 7044 case MotionEvent.ACTION_CANCEL: { 7045 if (mTouchMode == TOUCH_DRAG_MODE) { 7046 mScroller.springBack(mScrollX, mScrollY, 0, 7047 computeMaxScrollX(), 0, computeMaxScrollY()); 7048 invalidate(); 7049 } 7050 cancelWebCoreTouchEvent(contentX, contentY, false); 7051 cancelTouch(); 7052 break; 7053 } 7054 } 7055 return true; 7056 } 7057 7058 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 7059 TouchEventData ted = new TouchEventData(); 7060 ted.mAction = ev.getActionMasked(); 7061 final int count = ev.getPointerCount(); 7062 ted.mIds = new int[count]; 7063 ted.mPoints = new Point[count]; 7064 ted.mPointsInView = new Point[count]; 7065 for (int c = 0; c < count; c++) { 7066 ted.mIds[c] = ev.getPointerId(c); 7067 int x = viewToContentX((int) ev.getX(c) + mScrollX); 7068 int y = viewToContentY((int) ev.getY(c) + mScrollY); 7069 ted.mPoints[c] = new Point(x, y); 7070 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 7071 } 7072 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 7073 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 7074 ted.mActionIndex = ev.getActionIndex(); 7075 } 7076 ted.mMetaState = ev.getMetaState(); 7077 ted.mReprocess = true; 7078 ted.mMotionEvent = MotionEvent.obtain(ev); 7079 ted.mSequence = sequence; 7080 mTouchEventQueue.preQueueTouchEventData(ted); 7081 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7082 cancelLongPress(); 7083 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7084 } 7085 7086 void handleMultiTouchInWebView(MotionEvent ev) { 7087 if (DebugFlags.WEB_VIEW) { 7088 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 7089 + " mTouchMode=" + mTouchMode 7090 + " numPointers=" + ev.getPointerCount() 7091 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 7092 } 7093 7094 final ScaleGestureDetector detector = 7095 mZoomManager.getMultiTouchGestureDetector(); 7096 7097 // A few apps use WebView but don't instantiate gesture detector. 7098 // We don't need to support multi touch for them. 7099 if (detector == null) return; 7100 7101 float x = ev.getX(); 7102 float y = ev.getY(); 7103 7104 if (mPreventDefault != PREVENT_DEFAULT_YES) { 7105 detector.onTouchEvent(ev); 7106 7107 if (detector.isInProgress()) { 7108 if (DebugFlags.WEB_VIEW) { 7109 Log.v(LOGTAG, "detector is in progress"); 7110 } 7111 mLastTouchTime = ev.getEventTime(); 7112 x = detector.getFocusX(); 7113 y = detector.getFocusY(); 7114 7115 cancelLongPress(); 7116 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7117 if (!mZoomManager.supportsPanDuringZoom()) { 7118 return; 7119 } 7120 mTouchMode = TOUCH_DRAG_MODE; 7121 if (mVelocityTracker == null) { 7122 mVelocityTracker = VelocityTracker.obtain(); 7123 } 7124 } 7125 } 7126 7127 int action = ev.getActionMasked(); 7128 if (action == MotionEvent.ACTION_POINTER_DOWN) { 7129 cancelTouch(); 7130 action = MotionEvent.ACTION_DOWN; 7131 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 7132 // set mLastTouchX/Y to the remaining points for multi-touch. 7133 mLastTouchX = Math.round(x); 7134 mLastTouchY = Math.round(y); 7135 } else if (action == MotionEvent.ACTION_MOVE) { 7136 // negative x or y indicate it is on the edge, skip it. 7137 if (x < 0 || y < 0) { 7138 return; 7139 } 7140 } 7141 7142 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 7143 } 7144 7145 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 7146 if (shouldForwardTouchEvent()) { 7147 if (removeEvents) { 7148 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 7149 } 7150 TouchEventData ted = new TouchEventData(); 7151 ted.mIds = new int[1]; 7152 ted.mIds[0] = 0; 7153 ted.mPoints = new Point[1]; 7154 ted.mPoints[0] = new Point(x, y); 7155 ted.mPointsInView = new Point[1]; 7156 int viewX = contentToViewX(x) - mScrollX; 7157 int viewY = contentToViewY(y) - mScrollY; 7158 ted.mPointsInView[0] = new Point(viewX, viewY); 7159 ted.mAction = MotionEvent.ACTION_CANCEL; 7160 ted.mNativeLayer = nativeScrollableLayer( 7161 x, y, ted.mNativeLayerRect, null); 7162 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 7163 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7164 mPreventDefault = PREVENT_DEFAULT_IGNORE; 7165 7166 if (removeEvents) { 7167 // Mark this after sending the message above; we should 7168 // be willing to ignore the cancel event that we just sent. 7169 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 7170 } 7171 } 7172 } 7173 7174 private void startTouch(float x, float y, long eventTime) { 7175 // Remember where the motion event started 7176 mStartTouchX = mLastTouchX = Math.round(x); 7177 mStartTouchY = mLastTouchY = Math.round(y); 7178 mLastTouchTime = eventTime; 7179 mVelocityTracker = VelocityTracker.obtain(); 7180 mSnapScrollMode = SNAP_NONE; 7181 mPrivateHandler.sendEmptyMessageDelayed(UPDATE_SELECTION, 7182 ViewConfiguration.getTapTimeout()); 7183 } 7184 7185 private void startDrag() { 7186 WebViewCore.reducePriority(); 7187 // to get better performance, pause updating the picture 7188 WebViewCore.pauseUpdatePicture(mWebViewCore); 7189 nativeSetIsScrolling(true); 7190 7191 if (!mDragFromTextInput) { 7192 nativeHideCursor(); 7193 } 7194 7195 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 7196 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 7197 mZoomManager.invokeZoomPicker(); 7198 } 7199 } 7200 7201 private void doDrag(int deltaX, int deltaY) { 7202 if ((deltaX | deltaY) != 0) { 7203 int oldX = mScrollX; 7204 int oldY = mScrollY; 7205 int rangeX = computeMaxScrollX(); 7206 int rangeY = computeMaxScrollY(); 7207 // Check for the original scrolling layer in case we change 7208 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 7209 // reached the edge of a layer but mScrollingLayer will be non-zero 7210 // if we initiated the drag on a layer. 7211 if (mCurrentScrollingLayerId != 0) { 7212 final int contentX = viewToContentDimension(deltaX); 7213 final int contentY = viewToContentDimension(deltaY); 7214 7215 // Check the scrolling bounds to see if we will actually do any 7216 // scrolling. The rectangle is in document coordinates. 7217 final int maxX = mScrollingLayerRect.right; 7218 final int maxY = mScrollingLayerRect.bottom; 7219 final int resultX = Math.max(0, 7220 Math.min(mScrollingLayerRect.left + contentX, maxX)); 7221 final int resultY = Math.max(0, 7222 Math.min(mScrollingLayerRect.top + contentY, maxY)); 7223 7224 if (resultX != mScrollingLayerRect.left || 7225 resultY != mScrollingLayerRect.top) { 7226 // In case we switched to dragging the page. 7227 mTouchMode = TOUCH_DRAG_LAYER_MODE; 7228 deltaX = contentX; 7229 deltaY = contentY; 7230 oldX = mScrollingLayerRect.left; 7231 oldY = mScrollingLayerRect.top; 7232 rangeX = maxX; 7233 rangeY = maxY; 7234 } else { 7235 // Scroll the main page if we are not going to scroll the 7236 // layer. This does not reset mScrollingLayer in case the 7237 // user changes directions and the layer can scroll the 7238 // other way. 7239 mTouchMode = TOUCH_DRAG_MODE; 7240 } 7241 } 7242 7243 if (mOverScrollGlow != null) { 7244 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 7245 } 7246 7247 overScrollBy(deltaX, deltaY, oldX, oldY, 7248 rangeX, rangeY, 7249 mOverscrollDistance, mOverscrollDistance, true); 7250 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 7251 invalidate(); 7252 } 7253 } 7254 mZoomManager.keepZoomPickerVisible(); 7255 } 7256 7257 private void stopTouch() { 7258 if (mScroller.isFinished() && !mSelectingText 7259 && (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 7260 WebViewCore.resumePriority(); 7261 WebViewCore.resumeUpdatePicture(mWebViewCore); 7262 nativeSetIsScrolling(false); 7263 } 7264 7265 // we also use mVelocityTracker == null to tell us that we are 7266 // not "moving around", so we can take the slower/prettier 7267 // mode in the drawing code 7268 if (mVelocityTracker != null) { 7269 mVelocityTracker.recycle(); 7270 mVelocityTracker = null; 7271 } 7272 7273 // Release any pulled glows 7274 if (mOverScrollGlow != null) { 7275 mOverScrollGlow.releaseAll(); 7276 } 7277 7278 if (mSelectingText) { 7279 mSelectionStarted = false; 7280 if (mIsCaretSelection) { 7281 resetCaretTimer(); 7282 } 7283 syncSelectionCursors(); 7284 invalidate(); 7285 } 7286 } 7287 7288 private void cancelTouch() { 7289 // we also use mVelocityTracker == null to tell us that we are 7290 // not "moving around", so we can take the slower/prettier 7291 // mode in the drawing code 7292 if (mVelocityTracker != null) { 7293 mVelocityTracker.recycle(); 7294 mVelocityTracker = null; 7295 } 7296 7297 if ((mTouchMode == TOUCH_DRAG_MODE 7298 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 7299 WebViewCore.resumePriority(); 7300 WebViewCore.resumeUpdatePicture(mWebViewCore); 7301 nativeSetIsScrolling(false); 7302 } 7303 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 7304 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7305 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 7306 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 7307 if (sDisableNavcache) { 7308 removeTouchHighlight(); 7309 } 7310 mHeldMotionless = MOTIONLESS_TRUE; 7311 mTouchMode = TOUCH_DONE_MODE; 7312 nativeHideCursor(); 7313 } 7314 7315 @Override 7316 public boolean onGenericMotionEvent(MotionEvent event) { 7317 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 7318 switch (event.getAction()) { 7319 case MotionEvent.ACTION_SCROLL: { 7320 final float vscroll; 7321 final float hscroll; 7322 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 7323 vscroll = 0; 7324 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 7325 } else { 7326 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 7327 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 7328 } 7329 if (hscroll != 0 || vscroll != 0) { 7330 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 7331 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 7332 if (pinScrollBy(hdelta, vdelta, false, 0)) { 7333 return true; 7334 } 7335 } 7336 } 7337 } 7338 } 7339 return super.onGenericMotionEvent(event); 7340 } 7341 7342 private long mTrackballFirstTime = 0; 7343 private long mTrackballLastTime = 0; 7344 private float mTrackballRemainsX = 0.0f; 7345 private float mTrackballRemainsY = 0.0f; 7346 private int mTrackballXMove = 0; 7347 private int mTrackballYMove = 0; 7348 private boolean mSelectingText = false; 7349 private boolean mSelectionStarted = false; 7350 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 7351 private static final int TRACKBALL_TIMEOUT = 200; 7352 private static final int TRACKBALL_WAIT = 100; 7353 private static final int TRACKBALL_SCALE = 400; 7354 private static final int TRACKBALL_SCROLL_COUNT = 5; 7355 private static final int TRACKBALL_MOVE_COUNT = 10; 7356 private static final int TRACKBALL_MULTIPLIER = 3; 7357 private static final int SELECT_CURSOR_OFFSET = 16; 7358 private static final int SELECT_SCROLL = 5; 7359 private int mSelectX = 0; 7360 private int mSelectY = 0; 7361 private boolean mFocusSizeChanged = false; 7362 private boolean mTrackballDown = false; 7363 private long mTrackballUpTime = 0; 7364 private long mLastCursorTime = 0; 7365 private Rect mLastCursorBounds; 7366 7367 // Set by default; BrowserActivity clears to interpret trackball data 7368 // directly for movement. Currently, the framework only passes 7369 // arrow key events, not trackball events, from one child to the next 7370 private boolean mMapTrackballToArrowKeys = true; 7371 7372 private DrawData mDelaySetPicture; 7373 private DrawData mLoadedPicture; 7374 7375 public void setMapTrackballToArrowKeys(boolean setMap) { 7376 checkThread(); 7377 mMapTrackballToArrowKeys = setMap; 7378 } 7379 7380 void resetTrackballTime() { 7381 mTrackballLastTime = 0; 7382 } 7383 7384 @Override 7385 public boolean onTrackballEvent(MotionEvent ev) { 7386 long time = ev.getEventTime(); 7387 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 7388 if (ev.getY() > 0) pageDown(true); 7389 if (ev.getY() < 0) pageUp(true); 7390 return true; 7391 } 7392 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 7393 if (mSelectingText) { 7394 return true; // discard press if copy in progress 7395 } 7396 mTrackballDown = true; 7397 if (mNativeClass == 0) { 7398 return false; 7399 } 7400 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 7401 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 7402 nativeSelectBestAt(mLastCursorBounds); 7403 } 7404 if (DebugFlags.WEB_VIEW) { 7405 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 7406 + " time=" + time 7407 + " mLastCursorTime=" + mLastCursorTime); 7408 } 7409 if (isInTouchMode()) requestFocusFromTouch(); 7410 return false; // let common code in onKeyDown at it 7411 } 7412 if (ev.getAction() == MotionEvent.ACTION_UP) { 7413 // LONG_PRESS_CENTER is set in common onKeyDown 7414 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 7415 mTrackballDown = false; 7416 mTrackballUpTime = time; 7417 if (mSelectingText) { 7418 copySelection(); 7419 selectionDone(); 7420 return true; // discard press if copy in progress 7421 } 7422 if (DebugFlags.WEB_VIEW) { 7423 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 7424 + " time=" + time 7425 ); 7426 } 7427 return false; // let common code in onKeyUp at it 7428 } 7429 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 7430 AccessibilityManager.getInstance(mContext).isEnabled()) { 7431 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 7432 return false; 7433 } 7434 if (mTrackballDown) { 7435 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 7436 return true; // discard move if trackball is down 7437 } 7438 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 7439 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 7440 return true; 7441 } 7442 // TODO: alternatively we can do panning as touch does 7443 switchOutDrawHistory(); 7444 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 7445 if (DebugFlags.WEB_VIEW) { 7446 Log.v(LOGTAG, "onTrackballEvent time=" 7447 + time + " last=" + mTrackballLastTime); 7448 } 7449 mTrackballFirstTime = time; 7450 mTrackballXMove = mTrackballYMove = 0; 7451 } 7452 mTrackballLastTime = time; 7453 if (DebugFlags.WEB_VIEW) { 7454 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 7455 } 7456 mTrackballRemainsX += ev.getX(); 7457 mTrackballRemainsY += ev.getY(); 7458 doTrackball(time, ev.getMetaState()); 7459 return true; 7460 } 7461 7462 private int scaleTrackballX(float xRate, int width) { 7463 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 7464 int nextXMove = xMove; 7465 if (xMove > 0) { 7466 if (xMove > mTrackballXMove) { 7467 xMove -= mTrackballXMove; 7468 } 7469 } else if (xMove < mTrackballXMove) { 7470 xMove -= mTrackballXMove; 7471 } 7472 mTrackballXMove = nextXMove; 7473 return xMove; 7474 } 7475 7476 private int scaleTrackballY(float yRate, int height) { 7477 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 7478 int nextYMove = yMove; 7479 if (yMove > 0) { 7480 if (yMove > mTrackballYMove) { 7481 yMove -= mTrackballYMove; 7482 } 7483 } else if (yMove < mTrackballYMove) { 7484 yMove -= mTrackballYMove; 7485 } 7486 mTrackballYMove = nextYMove; 7487 return yMove; 7488 } 7489 7490 private int keyCodeToSoundsEffect(int keyCode) { 7491 switch(keyCode) { 7492 case KeyEvent.KEYCODE_DPAD_UP: 7493 return SoundEffectConstants.NAVIGATION_UP; 7494 case KeyEvent.KEYCODE_DPAD_RIGHT: 7495 return SoundEffectConstants.NAVIGATION_RIGHT; 7496 case KeyEvent.KEYCODE_DPAD_DOWN: 7497 return SoundEffectConstants.NAVIGATION_DOWN; 7498 case KeyEvent.KEYCODE_DPAD_LEFT: 7499 return SoundEffectConstants.NAVIGATION_LEFT; 7500 } 7501 throw new IllegalArgumentException("keyCode must be one of " + 7502 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 7503 "KEYCODE_DPAD_LEFT}."); 7504 } 7505 7506 private void doTrackball(long time, int metaState) { 7507 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 7508 if (elapsed == 0) { 7509 elapsed = TRACKBALL_TIMEOUT; 7510 } 7511 float xRate = mTrackballRemainsX * 1000 / elapsed; 7512 float yRate = mTrackballRemainsY * 1000 / elapsed; 7513 int viewWidth = getViewWidth(); 7514 int viewHeight = getViewHeight(); 7515 float ax = Math.abs(xRate); 7516 float ay = Math.abs(yRate); 7517 float maxA = Math.max(ax, ay); 7518 if (DebugFlags.WEB_VIEW) { 7519 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 7520 + " xRate=" + xRate 7521 + " yRate=" + yRate 7522 + " mTrackballRemainsX=" + mTrackballRemainsX 7523 + " mTrackballRemainsY=" + mTrackballRemainsY); 7524 } 7525 int width = mContentWidth - viewWidth; 7526 int height = mContentHeight - viewHeight; 7527 if (width < 0) width = 0; 7528 if (height < 0) height = 0; 7529 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 7530 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 7531 maxA = Math.max(ax, ay); 7532 int count = Math.max(0, (int) maxA); 7533 int oldScrollX = mScrollX; 7534 int oldScrollY = mScrollY; 7535 if (count > 0) { 7536 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 7537 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 7538 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 7539 KeyEvent.KEYCODE_DPAD_RIGHT; 7540 count = Math.min(count, TRACKBALL_MOVE_COUNT); 7541 if (DebugFlags.WEB_VIEW) { 7542 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 7543 + " count=" + count 7544 + " mTrackballRemainsX=" + mTrackballRemainsX 7545 + " mTrackballRemainsY=" + mTrackballRemainsY); 7546 } 7547 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 7548 for (int i = 0; i < count; i++) { 7549 letPageHandleNavKey(selectKeyCode, time, true, metaState); 7550 } 7551 letPageHandleNavKey(selectKeyCode, time, false, metaState); 7552 } else if (navHandledKey(selectKeyCode, count, false, time)) { 7553 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 7554 } 7555 mTrackballRemainsX = mTrackballRemainsY = 0; 7556 } 7557 if (count >= TRACKBALL_SCROLL_COUNT) { 7558 int xMove = scaleTrackballX(xRate, width); 7559 int yMove = scaleTrackballY(yRate, height); 7560 if (DebugFlags.WEB_VIEW) { 7561 Log.v(LOGTAG, "doTrackball pinScrollBy" 7562 + " count=" + count 7563 + " xMove=" + xMove + " yMove=" + yMove 7564 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 7565 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 7566 ); 7567 } 7568 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 7569 xMove = 0; 7570 } 7571 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 7572 yMove = 0; 7573 } 7574 if (xMove != 0 || yMove != 0) { 7575 pinScrollBy(xMove, yMove, true, 0); 7576 } 7577 } 7578 } 7579 7580 /** 7581 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 7582 * @return Maximum horizontal scroll position within real content 7583 */ 7584 int computeMaxScrollX() { 7585 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 7586 } 7587 7588 /** 7589 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 7590 * @return Maximum vertical scroll position within real content 7591 */ 7592 int computeMaxScrollY() { 7593 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 7594 - getViewHeightWithTitle(), 0); 7595 } 7596 7597 boolean updateScrollCoordinates(int x, int y) { 7598 int oldX = mScrollX; 7599 int oldY = mScrollY; 7600 mScrollX = x; 7601 mScrollY = y; 7602 if (oldX != mScrollX || oldY != mScrollY) { 7603 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 7604 return true; 7605 } else { 7606 return false; 7607 } 7608 } 7609 7610 public void flingScroll(int vx, int vy) { 7611 checkThread(); 7612 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 7613 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 7614 invalidate(); 7615 } 7616 7617 private void doFling() { 7618 if (mVelocityTracker == null) { 7619 return; 7620 } 7621 int maxX = computeMaxScrollX(); 7622 int maxY = computeMaxScrollY(); 7623 7624 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 7625 int vx = (int) mVelocityTracker.getXVelocity(); 7626 int vy = (int) mVelocityTracker.getYVelocity(); 7627 7628 int scrollX = mScrollX; 7629 int scrollY = mScrollY; 7630 int overscrollDistance = mOverscrollDistance; 7631 int overflingDistance = mOverflingDistance; 7632 7633 // Use the layer's scroll data if applicable. 7634 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 7635 scrollX = mScrollingLayerRect.left; 7636 scrollY = mScrollingLayerRect.top; 7637 maxX = mScrollingLayerRect.right; 7638 maxY = mScrollingLayerRect.bottom; 7639 // No overscrolling for layers. 7640 overscrollDistance = overflingDistance = 0; 7641 } 7642 7643 if (mSnapScrollMode != SNAP_NONE) { 7644 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 7645 vy = 0; 7646 } else { 7647 vx = 0; 7648 } 7649 } 7650 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 7651 WebViewCore.resumePriority(); 7652 if (!mSelectingText) { 7653 WebViewCore.resumeUpdatePicture(mWebViewCore); 7654 } 7655 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 7656 invalidate(); 7657 } 7658 return; 7659 } 7660 float currentVelocity = mScroller.getCurrVelocity(); 7661 float velocity = (float) Math.hypot(vx, vy); 7662 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 7663 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 7664 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 7665 - Math.atan2(vy, vx))); 7666 final float circle = (float) (Math.PI) * 2.0f; 7667 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 7668 vx += currentVelocity * mLastVelX / mLastVelocity; 7669 vy += currentVelocity * mLastVelY / mLastVelocity; 7670 velocity = (float) Math.hypot(vx, vy); 7671 if (DebugFlags.WEB_VIEW) { 7672 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 7673 } 7674 } else if (DebugFlags.WEB_VIEW) { 7675 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 7676 } 7677 } else if (DebugFlags.WEB_VIEW) { 7678 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 7679 + " current=" + currentVelocity 7680 + " vx=" + vx + " vy=" + vy 7681 + " maxX=" + maxX + " maxY=" + maxY 7682 + " scrollX=" + scrollX + " scrollY=" + scrollY 7683 + " layer=" + mCurrentScrollingLayerId); 7684 } 7685 7686 // Allow sloppy flings without overscrolling at the edges. 7687 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 7688 vx = 0; 7689 } 7690 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 7691 vy = 0; 7692 } 7693 7694 if (overscrollDistance < overflingDistance) { 7695 if ((vx > 0 && scrollX == -overscrollDistance) || 7696 (vx < 0 && scrollX == maxX + overscrollDistance)) { 7697 vx = 0; 7698 } 7699 if ((vy > 0 && scrollY == -overscrollDistance) || 7700 (vy < 0 && scrollY == maxY + overscrollDistance)) { 7701 vy = 0; 7702 } 7703 } 7704 7705 mLastVelX = vx; 7706 mLastVelY = vy; 7707 mLastVelocity = velocity; 7708 7709 // no horizontal overscroll if the content just fits 7710 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 7711 maxX == 0 ? 0 : overflingDistance, overflingDistance); 7712 // Duration is calculated based on velocity. With range boundaries and overscroll 7713 // we may not know how long the final animation will take. (Hence the deprecation 7714 // warning on the call below.) It's not a big deal for scroll bars but if webcore 7715 // resumes during this effect we will take a performance hit. See computeScroll; 7716 // we resume webcore there when the animation is finished. 7717 final int time = mScroller.getDuration(); 7718 7719 // Suppress scrollbars for layer scrolling. 7720 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 7721 awakenScrollBars(time); 7722 } 7723 7724 invalidate(); 7725 } 7726 7727 /** 7728 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 7729 * in charge of installing this view to the view hierarchy. This view will 7730 * become visible when the user starts scrolling via touch and fade away if 7731 * the user does not interact with it. 7732 * <p/> 7733 * API version 3 introduces a built-in zoom mechanism that is shown 7734 * automatically by the MapView. This is the preferred approach for 7735 * showing the zoom UI. 7736 * 7737 * @deprecated The built-in zoom mechanism is preferred, see 7738 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 7739 */ 7740 @Deprecated 7741 public View getZoomControls() { 7742 checkThread(); 7743 if (!getSettings().supportZoom()) { 7744 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7745 return null; 7746 } 7747 return mZoomManager.getExternalZoomPicker(); 7748 } 7749 7750 void dismissZoomControl() { 7751 mZoomManager.dismissZoomPicker(); 7752 } 7753 7754 float getDefaultZoomScale() { 7755 return mZoomManager.getDefaultScale(); 7756 } 7757 7758 /** 7759 * Return the overview scale of the WebView 7760 * @return The overview scale. 7761 */ 7762 float getZoomOverviewScale() { 7763 return mZoomManager.getZoomOverviewScale(); 7764 } 7765 7766 /** 7767 * @return TRUE if the WebView can be zoomed in. 7768 */ 7769 public boolean canZoomIn() { 7770 checkThread(); 7771 return mZoomManager.canZoomIn(); 7772 } 7773 7774 /** 7775 * @return TRUE if the WebView can be zoomed out. 7776 */ 7777 public boolean canZoomOut() { 7778 checkThread(); 7779 return mZoomManager.canZoomOut(); 7780 } 7781 7782 /** 7783 * Perform zoom in in the webview 7784 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7785 */ 7786 public boolean zoomIn() { 7787 checkThread(); 7788 return mZoomManager.zoomIn(); 7789 } 7790 7791 /** 7792 * Perform zoom out in the webview 7793 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7794 */ 7795 public boolean zoomOut() { 7796 checkThread(); 7797 return mZoomManager.zoomOut(); 7798 } 7799 7800 /** 7801 * This selects the best clickable target at mLastTouchX and mLastTouchY 7802 * and calls showCursorTimed on the native side 7803 */ 7804 private void updateSelection() { 7805 if (mNativeClass == 0 || sDisableNavcache) { 7806 return; 7807 } 7808 mPrivateHandler.removeMessages(UPDATE_SELECTION); 7809 // mLastTouchX and mLastTouchY are the point in the current viewport 7810 int contentX = viewToContentX(mLastTouchX + mScrollX); 7811 int contentY = viewToContentY(mLastTouchY + mScrollY); 7812 int slop = viewToContentDimension(mNavSlop); 7813 Rect rect = new Rect(contentX - slop, contentY - slop, 7814 contentX + slop, contentY + slop); 7815 nativeSelectBestAt(rect); 7816 mInitialHitTestResult = hitTestResult(null); 7817 } 7818 7819 /** 7820 * Scroll the focused text field to match the WebTextView 7821 * @param xPercent New x position of the WebTextView from 0 to 1. 7822 */ 7823 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7824 if (!inEditingMode() || mWebViewCore == null) { 7825 return; 7826 } 7827 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7828 new Float(xPercent)); 7829 } 7830 7831 /** 7832 * Scroll the focused textarea vertically to match the WebTextView 7833 * @param y New y position of the WebTextView in view coordinates 7834 */ 7835 /* package */ void scrollFocusedTextInputY(int y) { 7836 if (!inEditingMode() || mWebViewCore == null) { 7837 return; 7838 } 7839 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7840 } 7841 7842 /** 7843 * Set our starting point and time for a drag from the WebTextView. 7844 */ 7845 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7846 if (!inEditingMode()) { 7847 return; 7848 } 7849 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7850 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7851 mLastTouchTime = eventTime; 7852 if (!mScroller.isFinished()) { 7853 abortAnimation(); 7854 } 7855 mSnapScrollMode = SNAP_NONE; 7856 mVelocityTracker = VelocityTracker.obtain(); 7857 mTouchMode = TOUCH_DRAG_START_MODE; 7858 } 7859 7860 /** 7861 * Given a motion event from the WebTextView, set its location to our 7862 * coordinates, and handle the event. 7863 */ 7864 /*package*/ boolean textFieldDrag(MotionEvent event) { 7865 if (!inEditingMode()) { 7866 return false; 7867 } 7868 mDragFromTextInput = true; 7869 event.offsetLocation((mWebTextView.getLeft() - mScrollX), 7870 (mWebTextView.getTop() - mScrollY)); 7871 boolean result = onTouchEvent(event); 7872 mDragFromTextInput = false; 7873 return result; 7874 } 7875 7876 /** 7877 * Due a touch up from a WebTextView. This will be handled by webkit to 7878 * change the selection. 7879 * @param event MotionEvent in the WebTextView's coordinates. 7880 */ 7881 /*package*/ void touchUpOnTextField(MotionEvent event) { 7882 if (!inEditingMode()) { 7883 return; 7884 } 7885 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7886 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7887 int slop = viewToContentDimension(mNavSlop); 7888 nativeMotionUp(x, y, slop); 7889 } 7890 7891 /** 7892 * Called when pressing the center key or trackball on a textfield. 7893 */ 7894 /*package*/ void centerKeyPressOnTextField() { 7895 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7896 nativeCursorNodePointer()); 7897 } 7898 7899 private void doShortPress() { 7900 if (mNativeClass == 0) { 7901 return; 7902 } 7903 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7904 return; 7905 } 7906 mTouchMode = TOUCH_DONE_MODE; 7907 updateSelection(); 7908 switchOutDrawHistory(); 7909 // mLastTouchX and mLastTouchY are the point in the current viewport 7910 int contentX = viewToContentX(mLastTouchX + mScrollX); 7911 int contentY = viewToContentY(mLastTouchY + mScrollY); 7912 int slop = viewToContentDimension(mNavSlop); 7913 if (sDisableNavcache && !mTouchHighlightRegion.isEmpty()) { 7914 // set mTouchHighlightRequested to 0 to cause an immediate 7915 // drawing of the touch rings 7916 mTouchHighlightRequested = 0; 7917 invalidate(mTouchHighlightRegion.getBounds()); 7918 mPrivateHandler.postDelayed(new Runnable() { 7919 @Override 7920 public void run() { 7921 removeTouchHighlight(); 7922 } 7923 }, ViewConfiguration.getPressedStateDuration()); 7924 } 7925 if (sDisableNavcache) { 7926 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7927 // use "0" as generation id to inform WebKit to use the same x/y as 7928 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7929 touchUpData.mMoveGeneration = 0; 7930 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7931 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7932 WebViewCore.MotionUpData motionUpData = new WebViewCore 7933 .MotionUpData(); 7934 motionUpData.mFrame = nativeCacheHitFramePointer(); 7935 motionUpData.mNode = nativeCacheHitNodePointer(); 7936 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7937 motionUpData.mX = contentX; 7938 motionUpData.mY = contentY; 7939 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7940 motionUpData); 7941 } else { 7942 doMotionUp(contentX, contentY); 7943 } 7944 } 7945 7946 private void doMotionUp(int contentX, int contentY) { 7947 int slop = viewToContentDimension(mNavSlop); 7948 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7949 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7950 } 7951 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7952 playSoundEffect(SoundEffectConstants.CLICK); 7953 } 7954 } 7955 7956 void sendPluginDrawMsg() { 7957 mWebViewCore.sendMessage(EventHub.PLUGIN_SURFACE_READY); 7958 } 7959 7960 /** 7961 * Returns plugin bounds if x/y in content coordinates corresponds to a 7962 * plugin. Otherwise a NULL rectangle is returned. 7963 */ 7964 Rect getPluginBounds(int x, int y) { 7965 int slop = viewToContentDimension(mNavSlop); 7966 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7967 return nativeCacheHitNodeBounds(); 7968 } else { 7969 return null; 7970 } 7971 } 7972 7973 /* 7974 * Return true if the rect (e.g. plugin) is fully visible and maximized 7975 * inside the WebView. 7976 */ 7977 boolean isRectFitOnScreen(Rect rect) { 7978 final int rectWidth = rect.width(); 7979 final int rectHeight = rect.height(); 7980 final int viewWidth = getViewWidth(); 7981 final int viewHeight = getViewHeightWithTitle(); 7982 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7983 scale = mZoomManager.computeScaleWithLimits(scale); 7984 return !mZoomManager.willScaleTriggerZoom(scale) 7985 && contentToViewX(rect.left) >= mScrollX 7986 && contentToViewX(rect.right) <= mScrollX + viewWidth 7987 && contentToViewY(rect.top) >= mScrollY 7988 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7989 } 7990 7991 /* 7992 * Maximize and center the rectangle, specified in the document coordinate 7993 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7994 * animated scroll to center it. If the zoom needs to be changed, find the 7995 * zoom center and do a smooth zoom transition. The rect is in document 7996 * coordinates 7997 */ 7998 void centerFitRect(Rect rect) { 7999 final int rectWidth = rect.width(); 8000 final int rectHeight = rect.height(); 8001 final int viewWidth = getViewWidth(); 8002 final int viewHeight = getViewHeightWithTitle(); 8003 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 8004 / rectHeight); 8005 scale = mZoomManager.computeScaleWithLimits(scale); 8006 if (!mZoomManager.willScaleTriggerZoom(scale)) { 8007 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 8008 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 8009 true, 0); 8010 } else { 8011 float actualScale = mZoomManager.getScale(); 8012 float oldScreenX = rect.left * actualScale - mScrollX; 8013 float rectViewX = rect.left * scale; 8014 float rectViewWidth = rectWidth * scale; 8015 float newMaxWidth = mContentWidth * scale; 8016 float newScreenX = (viewWidth - rectViewWidth) / 2; 8017 // pin the newX to the WebView 8018 if (newScreenX > rectViewX) { 8019 newScreenX = rectViewX; 8020 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 8021 newScreenX = viewWidth - (newMaxWidth - rectViewX); 8022 } 8023 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 8024 / (scale - actualScale); 8025 float oldScreenY = rect.top * actualScale + getTitleHeight() 8026 - mScrollY; 8027 float rectViewY = rect.top * scale + getTitleHeight(); 8028 float rectViewHeight = rectHeight * scale; 8029 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 8030 float newScreenY = (viewHeight - rectViewHeight) / 2; 8031 // pin the newY to the WebView 8032 if (newScreenY > rectViewY) { 8033 newScreenY = rectViewY; 8034 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 8035 newScreenY = viewHeight - (newMaxHeight - rectViewY); 8036 } 8037 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 8038 / (scale - actualScale); 8039 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 8040 mZoomManager.startZoomAnimation(scale, false); 8041 } 8042 } 8043 8044 // Called by JNI to handle a touch on a node representing an email address, 8045 // address, or phone number 8046 private void overrideLoading(String url) { 8047 mCallbackProxy.uiOverrideUrlLoading(url); 8048 } 8049 8050 @Override 8051 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 8052 // FIXME: If a subwindow is showing find, and the user touches the 8053 // background window, it can steal focus. 8054 if (mFindIsUp) return false; 8055 boolean result = false; 8056 if (inEditingMode()) { 8057 result = mWebTextView.requestFocus(direction, 8058 previouslyFocusedRect); 8059 } else { 8060 result = super.requestFocus(direction, previouslyFocusedRect); 8061 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 8062 // For cases such as GMail, where we gain focus from a direction, 8063 // we want to move to the first available link. 8064 // FIXME: If there are no visible links, we may not want to 8065 int fakeKeyDirection = 0; 8066 switch(direction) { 8067 case View.FOCUS_UP: 8068 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 8069 break; 8070 case View.FOCUS_DOWN: 8071 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 8072 break; 8073 case View.FOCUS_LEFT: 8074 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 8075 break; 8076 case View.FOCUS_RIGHT: 8077 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 8078 break; 8079 default: 8080 return result; 8081 } 8082 if (mNativeClass != 0 && !nativeHasCursorNode()) { 8083 navHandledKey(fakeKeyDirection, 1, true, 0); 8084 } 8085 } 8086 } 8087 return result; 8088 } 8089 8090 @Override 8091 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 8092 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 8093 8094 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 8095 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 8096 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 8097 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 8098 8099 int measuredHeight = heightSize; 8100 int measuredWidth = widthSize; 8101 8102 // Grab the content size from WebViewCore. 8103 int contentHeight = contentToViewDimension(mContentHeight); 8104 int contentWidth = contentToViewDimension(mContentWidth); 8105 8106// Log.d(LOGTAG, "------- measure " + heightMode); 8107 8108 if (heightMode != MeasureSpec.EXACTLY) { 8109 mHeightCanMeasure = true; 8110 measuredHeight = contentHeight; 8111 if (heightMode == MeasureSpec.AT_MOST) { 8112 // If we are larger than the AT_MOST height, then our height can 8113 // no longer be measured and we should scroll internally. 8114 if (measuredHeight > heightSize) { 8115 measuredHeight = heightSize; 8116 mHeightCanMeasure = false; 8117 measuredHeight |= MEASURED_STATE_TOO_SMALL; 8118 } 8119 } 8120 } else { 8121 mHeightCanMeasure = false; 8122 } 8123 if (mNativeClass != 0) { 8124 nativeSetHeightCanMeasure(mHeightCanMeasure); 8125 } 8126 // For the width, always use the given size unless unspecified. 8127 if (widthMode == MeasureSpec.UNSPECIFIED) { 8128 mWidthCanMeasure = true; 8129 measuredWidth = contentWidth; 8130 } else { 8131 if (measuredWidth < contentWidth) { 8132 measuredWidth |= MEASURED_STATE_TOO_SMALL; 8133 } 8134 mWidthCanMeasure = false; 8135 } 8136 8137 synchronized (this) { 8138 setMeasuredDimension(measuredWidth, measuredHeight); 8139 } 8140 } 8141 8142 @Override 8143 public boolean requestChildRectangleOnScreen(View child, 8144 Rect rect, 8145 boolean immediate) { 8146 if (mNativeClass == 0) { 8147 return false; 8148 } 8149 // don't scroll while in zoom animation. When it is done, we will adjust 8150 // the necessary components (e.g., WebTextView if it is in editing mode) 8151 if (mZoomManager.isFixedLengthAnimationInProgress()) { 8152 return false; 8153 } 8154 8155 rect.offset(child.getLeft() - child.getScrollX(), 8156 child.getTop() - child.getScrollY()); 8157 8158 Rect content = new Rect(viewToContentX(mScrollX), 8159 viewToContentY(mScrollY), 8160 viewToContentX(mScrollX + getWidth() 8161 - getVerticalScrollbarWidth()), 8162 viewToContentY(mScrollY + getViewHeightWithTitle())); 8163 content = nativeSubtractLayers(content); 8164 int screenTop = contentToViewY(content.top); 8165 int screenBottom = contentToViewY(content.bottom); 8166 int height = screenBottom - screenTop; 8167 int scrollYDelta = 0; 8168 8169 if (rect.bottom > screenBottom) { 8170 int oneThirdOfScreenHeight = height / 3; 8171 if (rect.height() > 2 * oneThirdOfScreenHeight) { 8172 // If the rectangle is too tall to fit in the bottom two thirds 8173 // of the screen, place it at the top. 8174 scrollYDelta = rect.top - screenTop; 8175 } else { 8176 // If the rectangle will still fit on screen, we want its 8177 // top to be in the top third of the screen. 8178 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 8179 } 8180 } else if (rect.top < screenTop) { 8181 scrollYDelta = rect.top - screenTop; 8182 } 8183 8184 int screenLeft = contentToViewX(content.left); 8185 int screenRight = contentToViewX(content.right); 8186 int width = screenRight - screenLeft; 8187 int scrollXDelta = 0; 8188 8189 if (rect.right > screenRight && rect.left > screenLeft) { 8190 if (rect.width() > width) { 8191 scrollXDelta += (rect.left - screenLeft); 8192 } else { 8193 scrollXDelta += (rect.right - screenRight); 8194 } 8195 } else if (rect.left < screenLeft) { 8196 scrollXDelta -= (screenLeft - rect.left); 8197 } 8198 8199 if ((scrollYDelta | scrollXDelta) != 0) { 8200 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 8201 } 8202 8203 return false; 8204 } 8205 8206 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 8207 String replace, int newStart, int newEnd) { 8208 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 8209 arg.mReplace = replace; 8210 arg.mNewStart = newStart; 8211 arg.mNewEnd = newEnd; 8212 mTextGeneration++; 8213 arg.mTextGeneration = mTextGeneration; 8214 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 8215 } 8216 8217 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 8218 // check if mWebViewCore has been destroyed 8219 if (mWebViewCore == null) { 8220 return; 8221 } 8222 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 8223 arg.mEvent = event; 8224 arg.mCurrentText = currentText; 8225 // Increase our text generation number, and pass it to webcore thread 8226 mTextGeneration++; 8227 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 8228 // WebKit's document state is not saved until about to leave the page. 8229 // To make sure the host application, like Browser, has the up to date 8230 // document state when it goes to background, we force to save the 8231 // document state. 8232 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 8233 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 8234 cursorData(), 1000); 8235 } 8236 8237 /** 8238 * @hide 8239 */ 8240 public synchronized WebViewCore getWebViewCore() { 8241 return mWebViewCore; 8242 } 8243 8244 /** 8245 * Used only by TouchEventQueue to store pending touch events. 8246 */ 8247 private static class QueuedTouch { 8248 long mSequence; 8249 MotionEvent mEvent; // Optional 8250 TouchEventData mTed; // Optional 8251 8252 QueuedTouch mNext; 8253 8254 public QueuedTouch set(TouchEventData ted) { 8255 mSequence = ted.mSequence; 8256 mTed = ted; 8257 mEvent = null; 8258 mNext = null; 8259 return this; 8260 } 8261 8262 public QueuedTouch set(MotionEvent ev, long sequence) { 8263 mEvent = MotionEvent.obtain(ev); 8264 mSequence = sequence; 8265 mTed = null; 8266 mNext = null; 8267 return this; 8268 } 8269 8270 public QueuedTouch add(QueuedTouch other) { 8271 if (other.mSequence < mSequence) { 8272 other.mNext = this; 8273 return other; 8274 } 8275 8276 QueuedTouch insertAt = this; 8277 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 8278 insertAt = insertAt.mNext; 8279 } 8280 other.mNext = insertAt.mNext; 8281 insertAt.mNext = other; 8282 return this; 8283 } 8284 } 8285 8286 /** 8287 * WebView handles touch events asynchronously since some events must be passed to WebKit 8288 * for potentially slower processing. TouchEventQueue serializes touch events regardless 8289 * of which path they take to ensure that no events are ever processed out of order 8290 * by WebView. 8291 */ 8292 private class TouchEventQueue { 8293 private long mNextTouchSequence = Long.MIN_VALUE + 1; 8294 private long mLastHandledTouchSequence = Long.MIN_VALUE; 8295 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 8296 8297 // Events waiting to be processed. 8298 private QueuedTouch mTouchEventQueue; 8299 8300 // Known events that are waiting on a response before being enqueued. 8301 private QueuedTouch mPreQueue; 8302 8303 // Pool of QueuedTouch objects saved for later use. 8304 private QueuedTouch mQueuedTouchRecycleBin; 8305 private int mQueuedTouchRecycleCount; 8306 8307 private long mLastEventTime = Long.MAX_VALUE; 8308 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 8309 8310 // milliseconds until we abandon hope of getting all of a previous gesture 8311 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 8312 8313 private QueuedTouch obtainQueuedTouch() { 8314 if (mQueuedTouchRecycleBin != null) { 8315 QueuedTouch result = mQueuedTouchRecycleBin; 8316 mQueuedTouchRecycleBin = result.mNext; 8317 mQueuedTouchRecycleCount--; 8318 return result; 8319 } 8320 return new QueuedTouch(); 8321 } 8322 8323 /** 8324 * Allow events with any currently missing sequence numbers to be skipped in processing. 8325 */ 8326 public void ignoreCurrentlyMissingEvents() { 8327 mIgnoreUntilSequence = mNextTouchSequence; 8328 8329 // Run any events we have available and complete, pre-queued or otherwise. 8330 runQueuedAndPreQueuedEvents(); 8331 } 8332 8333 private void runQueuedAndPreQueuedEvents() { 8334 QueuedTouch qd = mPreQueue; 8335 boolean fromPreQueue = true; 8336 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8337 handleQueuedTouch(qd); 8338 QueuedTouch recycleMe = qd; 8339 if (fromPreQueue) { 8340 mPreQueue = qd.mNext; 8341 } else { 8342 mTouchEventQueue = qd.mNext; 8343 } 8344 recycleQueuedTouch(recycleMe); 8345 mLastHandledTouchSequence++; 8346 8347 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 8348 long nextQueued = mTouchEventQueue != null ? 8349 mTouchEventQueue.mSequence : Long.MAX_VALUE; 8350 fromPreQueue = nextPre < nextQueued; 8351 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 8352 } 8353 } 8354 8355 /** 8356 * Add a TouchEventData to the pre-queue. 8357 * 8358 * An event in the pre-queue is an event that we know about that 8359 * has been sent to webkit, but that we haven't received back and 8360 * enqueued into the normal touch queue yet. If webkit ever times 8361 * out and we need to ignore currently missing events, we'll run 8362 * events from the pre-queue to patch the holes. 8363 * 8364 * @param ted TouchEventData to pre-queue 8365 */ 8366 public void preQueueTouchEventData(TouchEventData ted) { 8367 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 8368 if (mPreQueue == null) { 8369 mPreQueue = newTouch; 8370 } else { 8371 QueuedTouch insertionPoint = mPreQueue; 8372 while (insertionPoint.mNext != null && 8373 insertionPoint.mNext.mSequence < newTouch.mSequence) { 8374 insertionPoint = insertionPoint.mNext; 8375 } 8376 newTouch.mNext = insertionPoint.mNext; 8377 insertionPoint.mNext = newTouch; 8378 } 8379 } 8380 8381 private void recycleQueuedTouch(QueuedTouch qd) { 8382 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 8383 qd.mNext = mQueuedTouchRecycleBin; 8384 mQueuedTouchRecycleBin = qd; 8385 mQueuedTouchRecycleCount++; 8386 } 8387 } 8388 8389 /** 8390 * Reset the touch event queue. This will dump any pending events 8391 * and reset the sequence numbering. 8392 */ 8393 public void reset() { 8394 mNextTouchSequence = Long.MIN_VALUE + 1; 8395 mLastHandledTouchSequence = Long.MIN_VALUE; 8396 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 8397 while (mTouchEventQueue != null) { 8398 QueuedTouch recycleMe = mTouchEventQueue; 8399 mTouchEventQueue = mTouchEventQueue.mNext; 8400 recycleQueuedTouch(recycleMe); 8401 } 8402 while (mPreQueue != null) { 8403 QueuedTouch recycleMe = mPreQueue; 8404 mPreQueue = mPreQueue.mNext; 8405 recycleQueuedTouch(recycleMe); 8406 } 8407 } 8408 8409 /** 8410 * Return the next valid sequence number for tagging incoming touch events. 8411 * @return The next touch event sequence number 8412 */ 8413 public long nextTouchSequence() { 8414 return mNextTouchSequence++; 8415 } 8416 8417 /** 8418 * Enqueue a touch event in the form of TouchEventData. 8419 * The sequence number will be read from the mSequence field of the argument. 8420 * 8421 * If the touch event's sequence number is the next in line to be processed, it will 8422 * be handled before this method returns. Any subsequent events that have already 8423 * been queued will also be processed in their proper order. 8424 * 8425 * @param ted Touch data to be processed in order. 8426 * @return true if the event was processed before returning, false if it was just enqueued. 8427 */ 8428 public boolean enqueueTouchEvent(TouchEventData ted) { 8429 // Remove from the pre-queue if present 8430 QueuedTouch preQueue = mPreQueue; 8431 if (preQueue != null) { 8432 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 8433 // if it was present in the pre-queue, and removed from the pre-queue itself. 8434 if (preQueue.mSequence == ted.mSequence) { 8435 mPreQueue = preQueue.mNext; 8436 } else { 8437 QueuedTouch prev = preQueue; 8438 preQueue = null; 8439 while (prev.mNext != null) { 8440 if (prev.mNext.mSequence == ted.mSequence) { 8441 preQueue = prev.mNext; 8442 prev.mNext = preQueue.mNext; 8443 break; 8444 } else { 8445 prev = prev.mNext; 8446 } 8447 } 8448 } 8449 } 8450 8451 if (ted.mSequence < mLastHandledTouchSequence) { 8452 // Stale event and we already moved on; drop it. (Should not be common.) 8453 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 8454 " received from webcore; ignoring"); 8455 return false; 8456 } 8457 8458 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 8459 return false; 8460 } 8461 8462 // dropStaleGestures above might have fast-forwarded us to 8463 // an event we have already. 8464 runNextQueuedEvents(); 8465 8466 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 8467 if (preQueue != null) { 8468 recycleQueuedTouch(preQueue); 8469 preQueue = null; 8470 } 8471 handleQueuedTouchEventData(ted); 8472 8473 mLastHandledTouchSequence++; 8474 8475 // Do we have any more? Run them if so. 8476 runNextQueuedEvents(); 8477 } else { 8478 // Reuse the pre-queued object if we had it. 8479 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 8480 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8481 } 8482 return true; 8483 } 8484 8485 /** 8486 * Enqueue a touch event in the form of a MotionEvent from the framework. 8487 * 8488 * If the touch event's sequence number is the next in line to be processed, it will 8489 * be handled before this method returns. Any subsequent events that have already 8490 * been queued will also be processed in their proper order. 8491 * 8492 * @param ev MotionEvent to be processed in order 8493 */ 8494 public void enqueueTouchEvent(MotionEvent ev) { 8495 final long sequence = nextTouchSequence(); 8496 8497 if (dropStaleGestures(ev, sequence)) { 8498 return; 8499 } 8500 8501 // dropStaleGestures above might have fast-forwarded us to 8502 // an event we have already. 8503 runNextQueuedEvents(); 8504 8505 if (mLastHandledTouchSequence + 1 == sequence) { 8506 handleQueuedMotionEvent(ev); 8507 8508 mLastHandledTouchSequence++; 8509 8510 // Do we have any more? Run them if so. 8511 runNextQueuedEvents(); 8512 } else { 8513 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 8514 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8515 } 8516 } 8517 8518 private void runNextQueuedEvents() { 8519 QueuedTouch qd = mTouchEventQueue; 8520 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8521 handleQueuedTouch(qd); 8522 QueuedTouch recycleMe = qd; 8523 qd = qd.mNext; 8524 recycleQueuedTouch(recycleMe); 8525 mLastHandledTouchSequence++; 8526 } 8527 mTouchEventQueue = qd; 8528 } 8529 8530 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 8531 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 8532 // This is to make sure that we don't attempt to process a tap 8533 // or long press when webkit takes too long to get back to us. 8534 // The movement will be properly confirmed when we process the 8535 // enqueued event later. 8536 final int dx = Math.round(ev.getX()) - mLastTouchX; 8537 final int dy = Math.round(ev.getY()) - mLastTouchY; 8538 if (dx * dx + dy * dy > mTouchSlopSquare) { 8539 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 8540 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 8541 } 8542 } 8543 8544 if (mTouchEventQueue == null) { 8545 return sequence <= mLastHandledTouchSequence; 8546 } 8547 8548 // If we have a new down event and it's been a while since the last event 8549 // we saw, catch up as best we can and keep going. 8550 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 8551 long eventTime = ev.getEventTime(); 8552 long lastHandledEventTime = mLastEventTime; 8553 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 8554 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 8555 "Catching up."); 8556 runQueuedAndPreQueuedEvents(); 8557 8558 // Drop leftovers that we truly don't have. 8559 QueuedTouch qd = mTouchEventQueue; 8560 while (qd != null && qd.mSequence < sequence) { 8561 QueuedTouch recycleMe = qd; 8562 qd = qd.mNext; 8563 recycleQueuedTouch(recycleMe); 8564 } 8565 mTouchEventQueue = qd; 8566 mLastHandledTouchSequence = sequence - 1; 8567 } 8568 } 8569 8570 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 8571 QueuedTouch qd = mTouchEventQueue; 8572 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8573 QueuedTouch recycleMe = qd; 8574 qd = qd.mNext; 8575 recycleQueuedTouch(recycleMe); 8576 } 8577 mTouchEventQueue = qd; 8578 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 8579 } 8580 8581 if (mPreQueue != null) { 8582 // Drop stale prequeued events 8583 QueuedTouch qd = mPreQueue; 8584 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8585 QueuedTouch recycleMe = qd; 8586 qd = qd.mNext; 8587 recycleQueuedTouch(recycleMe); 8588 } 8589 mPreQueue = qd; 8590 } 8591 8592 return sequence <= mLastHandledTouchSequence; 8593 } 8594 8595 private void handleQueuedTouch(QueuedTouch qt) { 8596 if (qt.mTed != null) { 8597 handleQueuedTouchEventData(qt.mTed); 8598 } else { 8599 handleQueuedMotionEvent(qt.mEvent); 8600 qt.mEvent.recycle(); 8601 } 8602 } 8603 8604 private void handleQueuedMotionEvent(MotionEvent ev) { 8605 mLastEventTime = ev.getEventTime(); 8606 int action = ev.getActionMasked(); 8607 if (ev.getPointerCount() > 1) { // Multi-touch 8608 handleMultiTouchInWebView(ev); 8609 } else { 8610 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 8611 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 8612 // ScaleGestureDetector needs a consistent event stream to operate properly. 8613 // It won't take any action with fewer than two pointers, but it needs to 8614 // update internal bookkeeping state. 8615 detector.onTouchEvent(ev); 8616 } 8617 8618 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 8619 } 8620 } 8621 8622 private void handleQueuedTouchEventData(TouchEventData ted) { 8623 if (ted.mMotionEvent != null) { 8624 mLastEventTime = ted.mMotionEvent.getEventTime(); 8625 } 8626 if (!ted.mReprocess) { 8627 if (ted.mAction == MotionEvent.ACTION_DOWN 8628 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 8629 // if prevent default is called from WebCore, UI 8630 // will not handle the rest of the touch events any 8631 // more. 8632 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8633 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 8634 } else if (ted.mAction == MotionEvent.ACTION_MOVE 8635 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 8636 // the return for the first ACTION_MOVE will decide 8637 // whether UI will handle touch or not. Currently no 8638 // support for alternating prevent default 8639 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8640 : PREVENT_DEFAULT_NO; 8641 } 8642 if (mPreventDefault == PREVENT_DEFAULT_YES) { 8643 mTouchHighlightRegion.setEmpty(); 8644 } 8645 } else { 8646 if (ted.mPoints.length > 1) { // multi-touch 8647 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 8648 mPreventDefault = PREVENT_DEFAULT_NO; 8649 handleMultiTouchInWebView(ted.mMotionEvent); 8650 } else { 8651 mPreventDefault = PREVENT_DEFAULT_YES; 8652 } 8653 return; 8654 } 8655 8656 // prevent default is not called in WebCore, so the 8657 // message needs to be reprocessed in UI 8658 if (!ted.mNativeResult) { 8659 // Following is for single touch. 8660 switch (ted.mAction) { 8661 case MotionEvent.ACTION_DOWN: 8662 mLastDeferTouchX = ted.mPointsInView[0].x; 8663 mLastDeferTouchY = ted.mPointsInView[0].y; 8664 mDeferTouchMode = TOUCH_INIT_MODE; 8665 break; 8666 case MotionEvent.ACTION_MOVE: { 8667 // no snapping in defer process 8668 int x = ted.mPointsInView[0].x; 8669 int y = ted.mPointsInView[0].y; 8670 8671 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 8672 mDeferTouchMode = TOUCH_DRAG_MODE; 8673 mLastDeferTouchX = x; 8674 mLastDeferTouchY = y; 8675 startScrollingLayer(x, y); 8676 startDrag(); 8677 } 8678 int deltaX = pinLocX((int) (mScrollX 8679 + mLastDeferTouchX - x)) 8680 - mScrollX; 8681 int deltaY = pinLocY((int) (mScrollY 8682 + mLastDeferTouchY - y)) 8683 - mScrollY; 8684 doDrag(deltaX, deltaY); 8685 if (deltaX != 0) mLastDeferTouchX = x; 8686 if (deltaY != 0) mLastDeferTouchY = y; 8687 break; 8688 } 8689 case MotionEvent.ACTION_UP: 8690 case MotionEvent.ACTION_CANCEL: 8691 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 8692 // no fling in defer process 8693 mScroller.springBack(mScrollX, mScrollY, 0, 8694 computeMaxScrollX(), 0, 8695 computeMaxScrollY()); 8696 invalidate(); 8697 WebViewCore.resumePriority(); 8698 WebViewCore.resumeUpdatePicture(mWebViewCore); 8699 } 8700 mDeferTouchMode = TOUCH_DONE_MODE; 8701 break; 8702 case WebViewCore.ACTION_DOUBLETAP: 8703 // doDoubleTap() needs mLastTouchX/Y as anchor 8704 mLastDeferTouchX = ted.mPointsInView[0].x; 8705 mLastDeferTouchY = ted.mPointsInView[0].y; 8706 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 8707 mDeferTouchMode = TOUCH_DONE_MODE; 8708 break; 8709 case WebViewCore.ACTION_LONGPRESS: 8710 HitTestResult hitTest = getHitTestResult(); 8711 if (hitTest != null && hitTest.mType 8712 != HitTestResult.UNKNOWN_TYPE) { 8713 performLongClick(); 8714 } 8715 mDeferTouchMode = TOUCH_DONE_MODE; 8716 break; 8717 } 8718 } 8719 } 8720 } 8721 } 8722 8723 //------------------------------------------------------------------------- 8724 // Methods can be called from a separate thread, like WebViewCore 8725 // If it needs to call the View system, it has to send message. 8726 //------------------------------------------------------------------------- 8727 8728 /** 8729 * General handler to receive message coming from webkit thread 8730 */ 8731 class PrivateHandler extends Handler { 8732 @Override 8733 public void handleMessage(Message msg) { 8734 // exclude INVAL_RECT_MSG_ID since it is frequently output 8735 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 8736 if (msg.what >= FIRST_PRIVATE_MSG_ID 8737 && msg.what <= LAST_PRIVATE_MSG_ID) { 8738 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 8739 - FIRST_PRIVATE_MSG_ID]); 8740 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 8741 && msg.what <= LAST_PACKAGE_MSG_ID) { 8742 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 8743 - FIRST_PACKAGE_MSG_ID]); 8744 } else { 8745 Log.v(LOGTAG, Integer.toString(msg.what)); 8746 } 8747 } 8748 if (mWebViewCore == null) { 8749 // after WebView's destroy() is called, skip handling messages. 8750 return; 8751 } 8752 if (mBlockWebkitViewMessages 8753 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 8754 // Blocking messages from webkit 8755 return; 8756 } 8757 switch (msg.what) { 8758 case REMEMBER_PASSWORD: { 8759 mDatabase.setUsernamePassword( 8760 msg.getData().getString("host"), 8761 msg.getData().getString("username"), 8762 msg.getData().getString("password")); 8763 ((Message) msg.obj).sendToTarget(); 8764 break; 8765 } 8766 case NEVER_REMEMBER_PASSWORD: { 8767 mDatabase.setUsernamePassword( 8768 msg.getData().getString("host"), null, null); 8769 ((Message) msg.obj).sendToTarget(); 8770 break; 8771 } 8772 case PREVENT_DEFAULT_TIMEOUT: { 8773 // if timeout happens, cancel it so that it won't block UI 8774 // to continue handling touch events 8775 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8776 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8777 || (msg.arg1 == MotionEvent.ACTION_MOVE 8778 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8779 cancelWebCoreTouchEvent( 8780 viewToContentX(mLastTouchX + mScrollX), 8781 viewToContentY(mLastTouchY + mScrollY), 8782 true); 8783 } 8784 break; 8785 } 8786 case SCROLL_SELECT_TEXT: { 8787 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8788 mSentAutoScrollMessage = false; 8789 break; 8790 } 8791 if (mCurrentScrollingLayerId == 0) { 8792 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8793 } else { 8794 scrollLayerTo(mScrollingLayerRect.left + mAutoScrollX, 8795 mScrollingLayerRect.top + mAutoScrollY); 8796 } 8797 sendEmptyMessageDelayed( 8798 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8799 break; 8800 } 8801 case UPDATE_SELECTION: { 8802 if (mTouchMode == TOUCH_INIT_MODE 8803 || mTouchMode == TOUCH_SHORTPRESS_MODE 8804 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 8805 updateSelection(); 8806 } 8807 break; 8808 } 8809 case SWITCH_TO_SHORTPRESS: { 8810 if (mTouchMode == TOUCH_INIT_MODE) { 8811 if (!sDisableNavcache 8812 && mPreventDefault != PREVENT_DEFAULT_YES) { 8813 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8814 updateSelection(); 8815 } else { 8816 // set to TOUCH_SHORTPRESS_MODE so that it won't 8817 // trigger double tap any more 8818 mTouchMode = TOUCH_SHORTPRESS_MODE; 8819 } 8820 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8821 mTouchMode = TOUCH_DONE_MODE; 8822 } 8823 break; 8824 } 8825 case SWITCH_TO_LONGPRESS: { 8826 if (sDisableNavcache) { 8827 removeTouchHighlight(); 8828 } 8829 if (inFullScreenMode() || mDeferTouchProcess) { 8830 TouchEventData ted = new TouchEventData(); 8831 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8832 ted.mIds = new int[1]; 8833 ted.mIds[0] = 0; 8834 ted.mPoints = new Point[1]; 8835 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8836 viewToContentY(mLastTouchY + mScrollY)); 8837 ted.mPointsInView = new Point[1]; 8838 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8839 // metaState for long press is tricky. Should it be the 8840 // state when the press started or when the press was 8841 // released? Or some intermediary key state? For 8842 // simplicity for now, we don't set it. 8843 ted.mMetaState = 0; 8844 ted.mReprocess = mDeferTouchProcess; 8845 ted.mNativeLayer = nativeScrollableLayer( 8846 ted.mPoints[0].x, ted.mPoints[0].y, 8847 ted.mNativeLayerRect, null); 8848 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8849 mTouchEventQueue.preQueueTouchEventData(ted); 8850 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8851 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8852 mTouchMode = TOUCH_DONE_MODE; 8853 performLongClick(); 8854 } 8855 break; 8856 } 8857 case RELEASE_SINGLE_TAP: { 8858 doShortPress(); 8859 break; 8860 } 8861 case SCROLL_TO_MSG_ID: { 8862 // arg1 = animate, arg2 = onlyIfImeIsShowing 8863 // obj = Point(x, y) 8864 if (msg.arg2 == 1) { 8865 // This scroll is intended to bring the textfield into 8866 // view, but is only necessary if the IME is showing 8867 InputMethodManager imm = InputMethodManager.peekInstance(); 8868 if (imm == null || !imm.isAcceptingText() 8869 || (!imm.isActive(WebView.this) && (!inEditingMode() 8870 || !imm.isActive(mWebTextView)))) { 8871 break; 8872 } 8873 } 8874 final Point p = (Point) msg.obj; 8875 if (msg.arg1 == 1) { 8876 spawnContentScrollTo(p.x, p.y); 8877 } else { 8878 setContentScrollTo(p.x, p.y); 8879 } 8880 break; 8881 } 8882 case UPDATE_ZOOM_RANGE: { 8883 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8884 // mScrollX contains the new minPrefWidth 8885 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8886 break; 8887 } 8888 case UPDATE_ZOOM_DENSITY: { 8889 final float density = (Float) msg.obj; 8890 mZoomManager.updateDefaultZoomDensity(density); 8891 break; 8892 } 8893 case REPLACE_BASE_CONTENT: { 8894 nativeReplaceBaseContent(msg.arg1); 8895 break; 8896 } 8897 case NEW_PICTURE_MSG_ID: { 8898 // called for new content 8899 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8900 setNewPicture(draw, true); 8901 break; 8902 } 8903 case WEBCORE_INITIALIZED_MSG_ID: 8904 // nativeCreate sets mNativeClass to a non-zero value 8905 String drawableDir = BrowserFrame.getRawResFilename( 8906 BrowserFrame.DRAWABLEDIR, mContext); 8907 WindowManager windowManager = 8908 (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE); 8909 Display display = windowManager.getDefaultDisplay(); 8910 nativeCreate(msg.arg1, drawableDir, 8911 ActivityManager.isHighEndGfx(display)); 8912 if (mDelaySetPicture != null) { 8913 setNewPicture(mDelaySetPicture, true); 8914 mDelaySetPicture = null; 8915 } 8916 if (mIsPaused) { 8917 nativeSetPauseDrawing(mNativeClass, true); 8918 } 8919 break; 8920 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8921 // Make sure that the textfield is currently focused 8922 // and representing the same node as the pointer. 8923 if (msg.arg2 == mTextGeneration) { 8924 String text = (String) msg.obj; 8925 if (null == text) { 8926 text = ""; 8927 } 8928 if (inEditingMode() && 8929 mWebTextView.isSameTextField(msg.arg1)) { 8930 mWebTextView.setTextAndKeepSelection(text); 8931 } else if (mInputConnection != null && 8932 mFieldPointer == msg.arg1) { 8933 mInputConnection.setTextAndKeepSelection(text); 8934 } 8935 } 8936 break; 8937 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8938 displaySoftKeyboard(true); 8939 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8940 case UPDATE_TEXT_SELECTION_MSG_ID: 8941 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8942 (WebViewCore.TextSelectionData) msg.obj); 8943 break; 8944 case FORM_DID_BLUR: 8945 if (inEditingMode() 8946 && mWebTextView.isSameTextField(msg.arg1)) { 8947 hideSoftKeyboard(); 8948 } 8949 break; 8950 case RETURN_LABEL: 8951 if (inEditingMode() 8952 && mWebTextView.isSameTextField(msg.arg1)) { 8953 mWebTextView.setHint((String) msg.obj); 8954 InputMethodManager imm 8955 = InputMethodManager.peekInstance(); 8956 // The hint is propagated to the IME in 8957 // onCreateInputConnection. If the IME is already 8958 // active, restart it so that its hint text is updated. 8959 if (imm != null && imm.isActive(mWebTextView)) { 8960 imm.restartInput(mWebTextView); 8961 } 8962 } 8963 break; 8964 case UNHANDLED_NAV_KEY: 8965 navHandledKey(msg.arg1, 1, false, 0); 8966 break; 8967 case UPDATE_TEXT_ENTRY_MSG_ID: 8968 // this is sent after finishing resize in WebViewCore. Make 8969 // sure the text edit box is still on the screen. 8970 if (inEditingMode() && nativeCursorIsTextInput()) { 8971 updateWebTextViewPosition(); 8972 } 8973 break; 8974 case CLEAR_TEXT_ENTRY: 8975 clearTextEntry(); 8976 break; 8977 case INVAL_RECT_MSG_ID: { 8978 Rect r = (Rect)msg.obj; 8979 if (r == null) { 8980 invalidate(); 8981 } else { 8982 // we need to scale r from content into view coords, 8983 // which viewInvalidate() does for us 8984 viewInvalidate(r.left, r.top, r.right, r.bottom); 8985 } 8986 break; 8987 } 8988 case REQUEST_FORM_DATA: 8989 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8990 if (mWebTextView.isSameTextField(msg.arg1)) { 8991 mWebTextView.setAdapterCustom(adapter); 8992 } 8993 break; 8994 8995 case LONG_PRESS_CENTER: 8996 // as this is shared by keydown and trackballdown, reset all 8997 // the states 8998 mGotCenterDown = false; 8999 mTrackballDown = false; 9000 performLongClick(); 9001 break; 9002 9003 case WEBCORE_NEED_TOUCH_EVENTS: 9004 mForwardTouchEvents = (msg.arg1 != 0); 9005 break; 9006 9007 case PREVENT_TOUCH_ID: 9008 if (inFullScreenMode()) { 9009 break; 9010 } 9011 TouchEventData ted = (TouchEventData) msg.obj; 9012 9013 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 9014 // WebCore is responding to us; remove pending timeout. 9015 // It will be re-posted when needed. 9016 removeMessages(PREVENT_DEFAULT_TIMEOUT); 9017 } 9018 break; 9019 9020 case REQUEST_KEYBOARD: 9021 if (msg.arg1 == 0) { 9022 hideSoftKeyboard(); 9023 } else { 9024 displaySoftKeyboard(false); 9025 } 9026 break; 9027 9028 case DRAG_HELD_MOTIONLESS: 9029 mHeldMotionless = MOTIONLESS_TRUE; 9030 invalidate(); 9031 // fall through to keep scrollbars awake 9032 9033 case AWAKEN_SCROLL_BARS: 9034 if (mTouchMode == TOUCH_DRAG_MODE 9035 && mHeldMotionless == MOTIONLESS_TRUE) { 9036 awakenScrollBars(ViewConfiguration 9037 .getScrollDefaultDelay(), false); 9038 mPrivateHandler.sendMessageDelayed(mPrivateHandler 9039 .obtainMessage(AWAKEN_SCROLL_BARS), 9040 ViewConfiguration.getScrollDefaultDelay()); 9041 } 9042 break; 9043 9044 case DO_MOTION_UP: 9045 doMotionUp(msg.arg1, msg.arg2); 9046 break; 9047 9048 case SCREEN_ON: 9049 setKeepScreenOn(msg.arg1 == 1); 9050 break; 9051 9052 case ENTER_FULLSCREEN_VIDEO: 9053 int layerId = msg.arg1; 9054 9055 String url = (String) msg.obj; 9056 if (mHTML5VideoViewProxy != null) { 9057 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 9058 } 9059 break; 9060 9061 case EXIT_FULLSCREEN_VIDEO: 9062 if (mHTML5VideoViewProxy != null) { 9063 mHTML5VideoViewProxy.exitFullScreenVideo(); 9064 } 9065 break; 9066 9067 case SHOW_FULLSCREEN: { 9068 View view = (View) msg.obj; 9069 int orientation = msg.arg1; 9070 int npp = msg.arg2; 9071 9072 if (inFullScreenMode()) { 9073 Log.w(LOGTAG, "Should not have another full screen."); 9074 dismissFullScreenMode(); 9075 } 9076 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 9077 mFullScreenHolder.setContentView(view); 9078 mFullScreenHolder.show(); 9079 invalidate(); 9080 9081 break; 9082 } 9083 case HIDE_FULLSCREEN: 9084 dismissFullScreenMode(); 9085 break; 9086 9087 case DOM_FOCUS_CHANGED: 9088 if (inEditingMode()) { 9089 nativeClearCursor(); 9090 rebuildWebTextView(); 9091 } 9092 break; 9093 9094 case SHOW_RECT_MSG_ID: { 9095 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 9096 int x = mScrollX; 9097 int left = contentToViewX(data.mLeft); 9098 int width = contentToViewDimension(data.mWidth); 9099 int maxWidth = contentToViewDimension(data.mContentWidth); 9100 int viewWidth = getViewWidth(); 9101 if (width < viewWidth) { 9102 // center align 9103 x += left + width / 2 - mScrollX - viewWidth / 2; 9104 } else { 9105 x += (int) (left + data.mXPercentInDoc * width 9106 - mScrollX - data.mXPercentInView * viewWidth); 9107 } 9108 if (DebugFlags.WEB_VIEW) { 9109 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 9110 width + ",maxWidth=" + maxWidth + 9111 ",viewWidth=" + viewWidth + ",x=" 9112 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 9113 ",xPercentInView=" + data.mXPercentInView+ ")"); 9114 } 9115 // use the passing content width to cap x as the current 9116 // mContentWidth may not be updated yet 9117 x = Math.max(0, 9118 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 9119 int top = contentToViewY(data.mTop); 9120 int height = contentToViewDimension(data.mHeight); 9121 int maxHeight = contentToViewDimension(data.mContentHeight); 9122 int viewHeight = getViewHeight(); 9123 int y = (int) (top + data.mYPercentInDoc * height - 9124 data.mYPercentInView * viewHeight); 9125 if (DebugFlags.WEB_VIEW) { 9126 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 9127 height + ",maxHeight=" + maxHeight + 9128 ",viewHeight=" + viewHeight + ",y=" 9129 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 9130 ",yPercentInView=" + data.mYPercentInView+ ")"); 9131 } 9132 // use the passing content height to cap y as the current 9133 // mContentHeight may not be updated yet 9134 y = Math.max(0, 9135 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 9136 // We need to take into account the visible title height 9137 // when scrolling since y is an absolute view position. 9138 y = Math.max(0, y - getVisibleTitleHeightImpl()); 9139 scrollTo(x, y); 9140 } 9141 break; 9142 9143 case CENTER_FIT_RECT: 9144 centerFitRect((Rect)msg.obj); 9145 break; 9146 9147 case SET_SCROLLBAR_MODES: 9148 mHorizontalScrollBarMode = msg.arg1; 9149 mVerticalScrollBarMode = msg.arg2; 9150 break; 9151 9152 case SELECTION_STRING_CHANGED: 9153 if (mAccessibilityInjector != null) { 9154 String selectionString = (String) msg.obj; 9155 mAccessibilityInjector.onSelectionStringChange(selectionString); 9156 } 9157 break; 9158 9159 case HIT_TEST_RESULT: 9160 WebKitHitTest hit = (WebKitHitTest) msg.obj; 9161 mFocusedNode = hit; 9162 setTouchHighlightRects(hit); 9163 if (hit == null) { 9164 mInitialHitTestResult = null; 9165 } else { 9166 mInitialHitTestResult = new HitTestResult(); 9167 if (hit.mLinkUrl != null) { 9168 mInitialHitTestResult.mType = HitTestResult.SRC_ANCHOR_TYPE; 9169 mInitialHitTestResult.mExtra = hit.mLinkUrl; 9170 if (hit.mImageUrl != null) { 9171 mInitialHitTestResult.mType = HitTestResult.SRC_IMAGE_ANCHOR_TYPE; 9172 mInitialHitTestResult.mExtra = hit.mImageUrl; 9173 } 9174 } else if (hit.mImageUrl != null) { 9175 mInitialHitTestResult.mType = HitTestResult.IMAGE_TYPE; 9176 mInitialHitTestResult.mExtra = hit.mImageUrl; 9177 } else if (hit.mEditable) { 9178 mInitialHitTestResult.mType = HitTestResult.EDIT_TEXT_TYPE; 9179 } 9180 } 9181 break; 9182 9183 case SAVE_WEBARCHIVE_FINISHED: 9184 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 9185 if (saveMessage.mCallback != null) { 9186 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 9187 } 9188 break; 9189 9190 case SET_AUTOFILLABLE: 9191 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 9192 if (mWebTextView != null) { 9193 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 9194 rebuildWebTextView(); 9195 } 9196 break; 9197 9198 case AUTOFILL_COMPLETE: 9199 if (mWebTextView != null) { 9200 // Clear the WebTextView adapter when AutoFill finishes 9201 // so that the drop down gets cleared. 9202 mWebTextView.setAdapterCustom(null); 9203 } 9204 break; 9205 9206 case SELECT_AT: 9207 nativeSelectAt(msg.arg1, msg.arg2); 9208 break; 9209 9210 case COPY_TO_CLIPBOARD: 9211 copyToClipboard((String) msg.obj); 9212 break; 9213 9214 case INIT_EDIT_FIELD: 9215 if (mInputConnection != null) { 9216 TextFieldInitData initData = (TextFieldInitData) msg.obj; 9217 mTextGeneration = 0; 9218 mFieldPointer = initData.mFieldPointer; 9219 mInputConnection.initEditorInfo(initData); 9220 mInputConnection.setTextAndKeepSelection(initData.mText); 9221 } 9222 break; 9223 9224 case REPLACE_TEXT:{ 9225 String text = (String)msg.obj; 9226 int start = msg.arg1; 9227 int end = msg.arg2; 9228 int cursorPosition = start + text.length(); 9229 replaceTextfieldText(start, end, text, 9230 cursorPosition, cursorPosition); 9231 break; 9232 } 9233 9234 case UPDATE_MATCH_COUNT: { 9235 if (mFindCallback != null) { 9236 mFindCallback.updateMatchCount(msg.arg1, msg.arg2, 9237 (String) msg.obj); 9238 } 9239 break; 9240 } 9241 case CLEAR_CARET_HANDLE: 9242 selectionDone(); 9243 break; 9244 9245 default: 9246 super.handleMessage(msg); 9247 break; 9248 } 9249 } 9250 } 9251 9252 private boolean shouldDrawHighlightRect() { 9253 if (mFocusedNode == null || mInitialHitTestResult == null) { 9254 return false; 9255 } 9256 if (mTouchHighlightRegion.isEmpty()) { 9257 return false; 9258 } 9259 if (mFocusedNode.mHasFocus && !isInTouchMode()) { 9260 return !mFocusedNode.mEditable; 9261 } 9262 if (mInitialHitTestResult.mType == HitTestResult.UNKNOWN_TYPE) { 9263 return false; 9264 } 9265 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 9266 if (delay < ViewConfiguration.getTapTimeout()) { 9267 Rect r = mTouchHighlightRegion.getBounds(); 9268 postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 9269 return false; 9270 } 9271 return true; 9272 } 9273 9274 9275 private FocusTransitionDrawable mFocusTransition = null; 9276 static class FocusTransitionDrawable extends Drawable { 9277 Region mPreviousRegion; 9278 Region mNewRegion; 9279 float mProgress = 0; 9280 WebView mWebView; 9281 Paint mPaint; 9282 int mMaxAlpha; 9283 Point mTranslate; 9284 9285 public FocusTransitionDrawable(WebView view) { 9286 mWebView = view; 9287 mPaint = new Paint(mWebView.mTouchHightlightPaint); 9288 mMaxAlpha = mPaint.getAlpha(); 9289 } 9290 9291 @Override 9292 public void setColorFilter(ColorFilter cf) { 9293 } 9294 9295 @Override 9296 public void setAlpha(int alpha) { 9297 } 9298 9299 @Override 9300 public int getOpacity() { 9301 return 0; 9302 } 9303 9304 public void setProgress(float p) { 9305 mProgress = p; 9306 if (mWebView.mFocusTransition == this) { 9307 if (mProgress == 1f) 9308 mWebView.mFocusTransition = null; 9309 mWebView.invalidate(); 9310 } 9311 } 9312 9313 public float getProgress() { 9314 return mProgress; 9315 } 9316 9317 @Override 9318 public void draw(Canvas canvas) { 9319 if (mTranslate == null) { 9320 Rect bounds = mPreviousRegion.getBounds(); 9321 Point from = new Point(bounds.centerX(), bounds.centerY()); 9322 mNewRegion.getBounds(bounds); 9323 Point to = new Point(bounds.centerX(), bounds.centerY()); 9324 mTranslate = new Point(from.x - to.x, from.y - to.y); 9325 } 9326 int alpha = (int) (mProgress * mMaxAlpha); 9327 RegionIterator iter = new RegionIterator(mPreviousRegion); 9328 Rect r = new Rect(); 9329 mPaint.setAlpha(mMaxAlpha - alpha); 9330 float tx = mTranslate.x * mProgress; 9331 float ty = mTranslate.y * mProgress; 9332 int save = canvas.save(Canvas.MATRIX_SAVE_FLAG); 9333 canvas.translate(-tx, -ty); 9334 while (iter.next(r)) { 9335 canvas.drawRect(r, mPaint); 9336 } 9337 canvas.restoreToCount(save); 9338 iter = new RegionIterator(mNewRegion); 9339 r = new Rect(); 9340 mPaint.setAlpha(alpha); 9341 save = canvas.save(Canvas.MATRIX_SAVE_FLAG); 9342 tx = mTranslate.x - tx; 9343 ty = mTranslate.y - ty; 9344 canvas.translate(tx, ty); 9345 while (iter.next(r)) { 9346 canvas.drawRect(r, mPaint); 9347 } 9348 canvas.restoreToCount(save); 9349 } 9350 }; 9351 9352 private boolean shouldAnimateTo(WebKitHitTest hit) { 9353 // TODO: Don't be annoying or throw out the animation entirely 9354 return false; 9355 } 9356 9357 private void setTouchHighlightRects(WebKitHitTest hit) { 9358 FocusTransitionDrawable transition = null; 9359 if (shouldAnimateTo(hit)) { 9360 transition = new FocusTransitionDrawable(this); 9361 } 9362 Rect[] rects = hit != null ? hit.mTouchRects : null; 9363 if (!mTouchHighlightRegion.isEmpty()) { 9364 invalidate(mTouchHighlightRegion.getBounds()); 9365 if (transition != null) { 9366 transition.mPreviousRegion = new Region(mTouchHighlightRegion); 9367 } 9368 mTouchHighlightRegion.setEmpty(); 9369 } 9370 if (rects != null) { 9371 mTouchHightlightPaint.setColor(hit.mTapHighlightColor); 9372 for (Rect rect : rects) { 9373 Rect viewRect = contentToViewRect(rect); 9374 // some sites, like stories in nytimes.com, set 9375 // mouse event handler in the top div. It is not 9376 // user friendly to highlight the div if it covers 9377 // more than half of the screen. 9378 if (viewRect.width() < getWidth() >> 1 9379 || viewRect.height() < getHeight() >> 1) { 9380 mTouchHighlightRegion.union(viewRect); 9381 } else { 9382 Log.w(LOGTAG, "Skip the huge selection rect:" 9383 + viewRect); 9384 } 9385 } 9386 invalidate(mTouchHighlightRegion.getBounds()); 9387 if (transition != null && transition.mPreviousRegion != null) { 9388 transition.mNewRegion = new Region(mTouchHighlightRegion); 9389 mFocusTransition = transition; 9390 ObjectAnimator animator = ObjectAnimator.ofFloat( 9391 mFocusTransition, "progress", 1f); 9392 animator.start(); 9393 } 9394 } 9395 } 9396 9397 /** @hide Called by JNI when pages are swapped (only occurs with hardware 9398 * acceleration) */ 9399 protected void pageSwapCallback(boolean notifyAnimationStarted) { 9400 mWebViewCore.resumeWebKitDraw(); 9401 if (inEditingMode()) { 9402 didUpdateWebTextViewDimensions(ANYWHERE); 9403 } 9404 if (notifyAnimationStarted) { 9405 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 9406 } 9407 } 9408 9409 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 9410 if (mNativeClass == 0) { 9411 if (mDelaySetPicture != null) { 9412 throw new IllegalStateException("Tried to setNewPicture with" 9413 + " a delay picture already set! (memory leak)"); 9414 } 9415 // Not initialized yet, delay set 9416 mDelaySetPicture = draw; 9417 return; 9418 } 9419 WebViewCore.ViewState viewState = draw.mViewState; 9420 boolean isPictureAfterFirstLayout = viewState != null; 9421 9422 if (updateBaseLayer) { 9423 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 9424 getSettings().getShowVisualIndicator(), 9425 isPictureAfterFirstLayout); 9426 } 9427 final Point viewSize = draw.mViewSize; 9428 // We update the layout (i.e. request a layout from the 9429 // view system) if the last view size that we sent to 9430 // WebCore matches the view size of the picture we just 9431 // received in the fixed dimension. 9432 final boolean updateLayout = viewSize.x == mLastWidthSent 9433 && viewSize.y == mLastHeightSent; 9434 // Don't send scroll event for picture coming from webkit, 9435 // since the new picture may cause a scroll event to override 9436 // the saved history scroll position. 9437 mSendScrollEvent = false; 9438 recordNewContentSize(draw.mContentSize.x, 9439 draw.mContentSize.y, updateLayout); 9440 if (isPictureAfterFirstLayout) { 9441 // Reset the last sent data here since dealing with new page. 9442 mLastWidthSent = 0; 9443 mZoomManager.onFirstLayout(draw); 9444 int scrollX = viewState.mShouldStartScrolledRight 9445 ? getContentWidth() : viewState.mScrollX; 9446 int scrollY = viewState.mScrollY; 9447 setContentScrollTo(scrollX, scrollY); 9448 if (!mDrawHistory) { 9449 // As we are on a new page, remove the WebTextView. This 9450 // is necessary for page loads driven by webkit, and in 9451 // particular when the user was on a password field, so 9452 // the WebTextView was visible. 9453 clearTextEntry(); 9454 } 9455 } 9456 mSendScrollEvent = true; 9457 9458 if (DebugFlags.WEB_VIEW) { 9459 Rect b = draw.mInvalRegion.getBounds(); 9460 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 9461 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 9462 } 9463 invalidateContentRect(draw.mInvalRegion.getBounds()); 9464 9465 if (mPictureListener != null) { 9466 mPictureListener.onNewPicture(WebView.this, capturePicture()); 9467 } 9468 9469 // update the zoom information based on the new picture 9470 mZoomManager.onNewPicture(draw); 9471 9472 if (draw.mFocusSizeChanged && inEditingMode()) { 9473 mFocusSizeChanged = true; 9474 } 9475 if (isPictureAfterFirstLayout) { 9476 mViewManager.postReadyToDrawAll(); 9477 } 9478 } 9479 9480 /** 9481 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 9482 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 9483 */ 9484 private void updateTextSelectionFromMessage(int nodePointer, 9485 int textGeneration, WebViewCore.TextSelectionData data) { 9486 if (textGeneration == mTextGeneration) { 9487 if (inEditingMode() 9488 && mWebTextView.isSameTextField(nodePointer)) { 9489 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 9490 } else if (mInputConnection != null && mFieldPointer == nodePointer) { 9491 mInputConnection.setSelection(data.mStart, data.mEnd); 9492 } 9493 } 9494 nativeSetTextSelection(mNativeClass, data.mSelectTextPtr); 9495 9496 if (data.mSelectTextPtr != 0 && 9497 (data.mStart != data.mEnd || 9498 (mFieldPointer == nodePointer && mFieldPointer != 0))) { 9499 mIsCaretSelection = (data.mStart == data.mEnd); 9500 if (!mSelectingText) { 9501 setupWebkitSelect(); 9502 } else if (!mSelectionStarted) { 9503 syncSelectionCursors(); 9504 } 9505 if (mIsCaretSelection) { 9506 resetCaretTimer(); 9507 } 9508 } else { 9509 selectionDone(); 9510 } 9511 invalidate(); 9512 } 9513 9514 // Class used to use a dropdown for a <select> element 9515 private class InvokeListBox implements Runnable { 9516 // Whether the listbox allows multiple selection. 9517 private boolean mMultiple; 9518 // Passed in to a list with multiple selection to tell 9519 // which items are selected. 9520 private int[] mSelectedArray; 9521 // Passed in to a list with single selection to tell 9522 // where the initial selection is. 9523 private int mSelection; 9524 9525 private Container[] mContainers; 9526 9527 // Need these to provide stable ids to my ArrayAdapter, 9528 // which normally does not have stable ids. (Bug 1250098) 9529 private class Container extends Object { 9530 /** 9531 * Possible values for mEnabled. Keep in sync with OptionStatus in 9532 * WebViewCore.cpp 9533 */ 9534 final static int OPTGROUP = -1; 9535 final static int OPTION_DISABLED = 0; 9536 final static int OPTION_ENABLED = 1; 9537 9538 String mString; 9539 int mEnabled; 9540 int mId; 9541 9542 @Override 9543 public String toString() { 9544 return mString; 9545 } 9546 } 9547 9548 /** 9549 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 9550 * and allow filtering. 9551 */ 9552 private class MyArrayListAdapter extends ArrayAdapter<Container> { 9553 public MyArrayListAdapter() { 9554 super(mContext, 9555 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 9556 com.android.internal.R.layout.webview_select_singlechoice, 9557 mContainers); 9558 } 9559 9560 @Override 9561 public View getView(int position, View convertView, 9562 ViewGroup parent) { 9563 // Always pass in null so that we will get a new CheckedTextView 9564 // Otherwise, an item which was previously used as an <optgroup> 9565 // element (i.e. has no check), could get used as an <option> 9566 // element, which needs a checkbox/radio, but it would not have 9567 // one. 9568 convertView = super.getView(position, null, parent); 9569 Container c = item(position); 9570 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 9571 // ListView does not draw dividers between disabled and 9572 // enabled elements. Use a LinearLayout to provide dividers 9573 LinearLayout layout = new LinearLayout(mContext); 9574 layout.setOrientation(LinearLayout.VERTICAL); 9575 if (position > 0) { 9576 View dividerTop = new View(mContext); 9577 dividerTop.setBackgroundResource( 9578 android.R.drawable.divider_horizontal_bright); 9579 layout.addView(dividerTop); 9580 } 9581 9582 if (Container.OPTGROUP == c.mEnabled) { 9583 // Currently select_dialog_multichoice uses CheckedTextViews. 9584 // If that changes, the class cast will no longer be valid. 9585 if (mMultiple) { 9586 Assert.assertTrue(convertView instanceof CheckedTextView); 9587 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 9588 } 9589 } else { 9590 // c.mEnabled == Container.OPTION_DISABLED 9591 // Draw the disabled element in a disabled state. 9592 convertView.setEnabled(false); 9593 } 9594 9595 layout.addView(convertView); 9596 if (position < getCount() - 1) { 9597 View dividerBottom = new View(mContext); 9598 dividerBottom.setBackgroundResource( 9599 android.R.drawable.divider_horizontal_bright); 9600 layout.addView(dividerBottom); 9601 } 9602 return layout; 9603 } 9604 return convertView; 9605 } 9606 9607 @Override 9608 public boolean hasStableIds() { 9609 // AdapterView's onChanged method uses this to determine whether 9610 // to restore the old state. Return false so that the old (out 9611 // of date) state does not replace the new, valid state. 9612 return false; 9613 } 9614 9615 private Container item(int position) { 9616 if (position < 0 || position >= getCount()) { 9617 return null; 9618 } 9619 return getItem(position); 9620 } 9621 9622 @Override 9623 public long getItemId(int position) { 9624 Container item = item(position); 9625 if (item == null) { 9626 return -1; 9627 } 9628 return item.mId; 9629 } 9630 9631 @Override 9632 public boolean areAllItemsEnabled() { 9633 return false; 9634 } 9635 9636 @Override 9637 public boolean isEnabled(int position) { 9638 Container item = item(position); 9639 if (item == null) { 9640 return false; 9641 } 9642 return Container.OPTION_ENABLED == item.mEnabled; 9643 } 9644 } 9645 9646 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 9647 mMultiple = true; 9648 mSelectedArray = selected; 9649 9650 int length = array.length; 9651 mContainers = new Container[length]; 9652 for (int i = 0; i < length; i++) { 9653 mContainers[i] = new Container(); 9654 mContainers[i].mString = array[i]; 9655 mContainers[i].mEnabled = enabled[i]; 9656 mContainers[i].mId = i; 9657 } 9658 } 9659 9660 private InvokeListBox(String[] array, int[] enabled, int selection) { 9661 mSelection = selection; 9662 mMultiple = false; 9663 9664 int length = array.length; 9665 mContainers = new Container[length]; 9666 for (int i = 0; i < length; i++) { 9667 mContainers[i] = new Container(); 9668 mContainers[i].mString = array[i]; 9669 mContainers[i].mEnabled = enabled[i]; 9670 mContainers[i].mId = i; 9671 } 9672 } 9673 9674 /* 9675 * Whenever the data set changes due to filtering, this class ensures 9676 * that the checked item remains checked. 9677 */ 9678 private class SingleDataSetObserver extends DataSetObserver { 9679 private long mCheckedId; 9680 private ListView mListView; 9681 private Adapter mAdapter; 9682 9683 /* 9684 * Create a new observer. 9685 * @param id The ID of the item to keep checked. 9686 * @param l ListView for getting and clearing the checked states 9687 * @param a Adapter for getting the IDs 9688 */ 9689 public SingleDataSetObserver(long id, ListView l, Adapter a) { 9690 mCheckedId = id; 9691 mListView = l; 9692 mAdapter = a; 9693 } 9694 9695 @Override 9696 public void onChanged() { 9697 // The filter may have changed which item is checked. Find the 9698 // item that the ListView thinks is checked. 9699 int position = mListView.getCheckedItemPosition(); 9700 long id = mAdapter.getItemId(position); 9701 if (mCheckedId != id) { 9702 // Clear the ListView's idea of the checked item, since 9703 // it is incorrect 9704 mListView.clearChoices(); 9705 // Search for mCheckedId. If it is in the filtered list, 9706 // mark it as checked 9707 int count = mAdapter.getCount(); 9708 for (int i = 0; i < count; i++) { 9709 if (mAdapter.getItemId(i) == mCheckedId) { 9710 mListView.setItemChecked(i, true); 9711 break; 9712 } 9713 } 9714 } 9715 } 9716 } 9717 9718 @Override 9719 public void run() { 9720 final ListView listView = (ListView) LayoutInflater.from(mContext) 9721 .inflate(com.android.internal.R.layout.select_dialog, null); 9722 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 9723 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 9724 .setView(listView).setCancelable(true) 9725 .setInverseBackgroundForced(true); 9726 9727 if (mMultiple) { 9728 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 9729 @Override 9730 public void onClick(DialogInterface dialog, int which) { 9731 mWebViewCore.sendMessage( 9732 EventHub.LISTBOX_CHOICES, 9733 adapter.getCount(), 0, 9734 listView.getCheckedItemPositions()); 9735 }}); 9736 b.setNegativeButton(android.R.string.cancel, 9737 new DialogInterface.OnClickListener() { 9738 @Override 9739 public void onClick(DialogInterface dialog, int which) { 9740 mWebViewCore.sendMessage( 9741 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9742 }}); 9743 } 9744 mListBoxDialog = b.create(); 9745 listView.setAdapter(adapter); 9746 listView.setFocusableInTouchMode(true); 9747 // There is a bug (1250103) where the checks in a ListView with 9748 // multiple items selected are associated with the positions, not 9749 // the ids, so the items do not properly retain their checks when 9750 // filtered. Do not allow filtering on multiple lists until 9751 // that bug is fixed. 9752 9753 listView.setTextFilterEnabled(!mMultiple); 9754 if (mMultiple) { 9755 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 9756 int length = mSelectedArray.length; 9757 for (int i = 0; i < length; i++) { 9758 listView.setItemChecked(mSelectedArray[i], true); 9759 } 9760 } else { 9761 listView.setOnItemClickListener(new OnItemClickListener() { 9762 @Override 9763 public void onItemClick(AdapterView<?> parent, View v, 9764 int position, long id) { 9765 // Rather than sending the message right away, send it 9766 // after the page regains focus. 9767 mListBoxMessage = Message.obtain(null, 9768 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 9769 mListBoxDialog.dismiss(); 9770 mListBoxDialog = null; 9771 } 9772 }); 9773 if (mSelection != -1) { 9774 listView.setSelection(mSelection); 9775 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 9776 listView.setItemChecked(mSelection, true); 9777 DataSetObserver observer = new SingleDataSetObserver( 9778 adapter.getItemId(mSelection), listView, adapter); 9779 adapter.registerDataSetObserver(observer); 9780 } 9781 } 9782 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 9783 @Override 9784 public void onCancel(DialogInterface dialog) { 9785 mWebViewCore.sendMessage( 9786 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9787 mListBoxDialog = null; 9788 } 9789 }); 9790 mListBoxDialog.show(); 9791 } 9792 } 9793 9794 private Message mListBoxMessage; 9795 9796 /* 9797 * Request a dropdown menu for a listbox with multiple selection. 9798 * 9799 * @param array Labels for the listbox. 9800 * @param enabledArray State for each element in the list. See static 9801 * integers in Container class. 9802 * @param selectedArray Which positions are initally selected. 9803 */ 9804 void requestListBox(String[] array, int[] enabledArray, int[] 9805 selectedArray) { 9806 mPrivateHandler.post( 9807 new InvokeListBox(array, enabledArray, selectedArray)); 9808 } 9809 9810 /* 9811 * Request a dropdown menu for a listbox with single selection or a single 9812 * <select> element. 9813 * 9814 * @param array Labels for the listbox. 9815 * @param enabledArray State for each element in the list. See static 9816 * integers in Container class. 9817 * @param selection Which position is initally selected. 9818 */ 9819 void requestListBox(String[] array, int[] enabledArray, int selection) { 9820 mPrivateHandler.post( 9821 new InvokeListBox(array, enabledArray, selection)); 9822 } 9823 9824 // called by JNI 9825 private void sendMoveFocus(int frame, int node) { 9826 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 9827 new WebViewCore.CursorData(frame, node, 0, 0)); 9828 } 9829 9830 // called by JNI 9831 private void sendMoveMouse(int frame, int node, int x, int y) { 9832 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 9833 new WebViewCore.CursorData(frame, node, x, y)); 9834 } 9835 9836 /* 9837 * Send a mouse move event to the webcore thread. 9838 * 9839 * @param removeFocus Pass true to remove the WebTextView, if present. 9840 * @param stopPaintingCaret Stop drawing the blinking caret if true. 9841 * called by JNI 9842 */ 9843 @SuppressWarnings("unused") 9844 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 9845 if (removeFocus) { 9846 clearTextEntry(); 9847 } 9848 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 9849 stopPaintingCaret ? 1 : 0, 0, 9850 cursorData()); 9851 } 9852 9853 /** 9854 * Called by JNI to send a message to the webcore thread that the user 9855 * touched the webpage. 9856 * @param touchGeneration Generation number of the touch, to ignore touches 9857 * after a new one has been generated. 9858 * @param frame Pointer to the frame holding the node that was touched. 9859 * @param node Pointer to the node touched. 9860 * @param x x-position of the touch. 9861 * @param y y-position of the touch. 9862 */ 9863 private void sendMotionUp(int touchGeneration, 9864 int frame, int node, int x, int y) { 9865 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 9866 touchUpData.mMoveGeneration = touchGeneration; 9867 touchUpData.mFrame = frame; 9868 touchUpData.mNode = node; 9869 touchUpData.mX = x; 9870 touchUpData.mY = y; 9871 touchUpData.mNativeLayer = nativeScrollableLayer( 9872 x, y, touchUpData.mNativeLayerRect, null); 9873 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 9874 } 9875 9876 9877 private int getScaledMaxXScroll() { 9878 int width; 9879 if (mHeightCanMeasure == false) { 9880 width = getViewWidth() / 4; 9881 } else { 9882 Rect visRect = new Rect(); 9883 calcOurVisibleRect(visRect); 9884 width = visRect.width() / 2; 9885 } 9886 // FIXME the divisor should be retrieved from somewhere 9887 return viewToContentX(width); 9888 } 9889 9890 private int getScaledMaxYScroll() { 9891 int height; 9892 if (mHeightCanMeasure == false) { 9893 height = getViewHeight() / 4; 9894 } else { 9895 Rect visRect = new Rect(); 9896 calcOurVisibleRect(visRect); 9897 height = visRect.height() / 2; 9898 } 9899 // FIXME the divisor should be retrieved from somewhere 9900 // the closest thing today is hard-coded into ScrollView.java 9901 // (from ScrollView.java, line 363) int maxJump = height/2; 9902 return Math.round(height * mZoomManager.getInvScale()); 9903 } 9904 9905 /** 9906 * Called by JNI to invalidate view 9907 */ 9908 private void viewInvalidate() { 9909 invalidate(); 9910 } 9911 9912 /** 9913 * Pass the key directly to the page. This assumes that 9914 * nativePageShouldHandleShiftAndArrows() returned true. 9915 */ 9916 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 9917 int keyEventAction; 9918 int eventHubAction; 9919 if (down) { 9920 keyEventAction = KeyEvent.ACTION_DOWN; 9921 eventHubAction = EventHub.KEY_DOWN; 9922 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 9923 } else { 9924 keyEventAction = KeyEvent.ACTION_UP; 9925 eventHubAction = EventHub.KEY_UP; 9926 } 9927 9928 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 9929 1, (metaState & KeyEvent.META_SHIFT_ON) 9930 | (metaState & KeyEvent.META_ALT_ON) 9931 | (metaState & KeyEvent.META_SYM_ON) 9932 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 9933 mWebViewCore.sendMessage(eventHubAction, event); 9934 } 9935 9936 // return true if the key was handled 9937 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 9938 long time) { 9939 if (mNativeClass == 0) { 9940 return false; 9941 } 9942 mInitialHitTestResult = null; 9943 mLastCursorTime = time; 9944 mLastCursorBounds = nativeGetCursorRingBounds(); 9945 boolean keyHandled 9946 = nativeMoveCursor(keyCode, count, noScroll) == false; 9947 if (DebugFlags.WEB_VIEW) { 9948 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 9949 + " mLastCursorTime=" + mLastCursorTime 9950 + " handled=" + keyHandled); 9951 } 9952 if (keyHandled == false) { 9953 return keyHandled; 9954 } 9955 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 9956 if (contentCursorRingBounds.isEmpty()) return keyHandled; 9957 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 9958 // set last touch so that context menu related functions will work 9959 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 9960 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 9961 if (mHeightCanMeasure == false) { 9962 return keyHandled; 9963 } 9964 Rect visRect = new Rect(); 9965 calcOurVisibleRect(visRect); 9966 Rect outset = new Rect(visRect); 9967 int maxXScroll = visRect.width() / 2; 9968 int maxYScroll = visRect.height() / 2; 9969 outset.inset(-maxXScroll, -maxYScroll); 9970 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 9971 return keyHandled; 9972 } 9973 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 9974 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 9975 maxXScroll); 9976 if (maxH > 0) { 9977 pinScrollBy(maxH, 0, true, 0); 9978 } else { 9979 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 9980 -maxXScroll); 9981 if (maxH < 0) { 9982 pinScrollBy(maxH, 0, true, 0); 9983 } 9984 } 9985 if (mLastCursorBounds.isEmpty()) return keyHandled; 9986 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 9987 return keyHandled; 9988 } 9989 if (DebugFlags.WEB_VIEW) { 9990 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 9991 + contentCursorRingBounds); 9992 } 9993 requestRectangleOnScreen(viewCursorRingBounds); 9994 return keyHandled; 9995 } 9996 9997 /** 9998 * @return Whether accessibility script has been injected. 9999 */ 10000 private boolean accessibilityScriptInjected() { 10001 // TODO: Maybe the injected script should announce its presence in 10002 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 10003 // will check that as one of the conditions it looks for 10004 return mAccessibilityScriptInjected; 10005 } 10006 10007 /** 10008 * Set the background color. It's white by default. Pass 10009 * zero to make the view transparent. 10010 * @param color the ARGB color described by Color.java 10011 */ 10012 @Override 10013 public void setBackgroundColor(int color) { 10014 mBackgroundColor = color; 10015 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 10016 } 10017 10018 /** 10019 * @deprecated This method is now obsolete. 10020 */ 10021 @Deprecated 10022 public void debugDump() { 10023 checkThread(); 10024 nativeDebugDump(); 10025 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 10026 } 10027 10028 /** 10029 * Draw the HTML page into the specified canvas. This call ignores any 10030 * view-specific zoom, scroll offset, or other changes. It does not draw 10031 * any view-specific chrome, such as progress or URL bars. 10032 * 10033 * @hide only needs to be accessible to Browser and testing 10034 */ 10035 public void drawPage(Canvas canvas) { 10036 calcOurContentVisibleRectF(mVisibleContentRect); 10037 nativeDraw(canvas, mVisibleContentRect, 0, 0, false); 10038 } 10039 10040 /** 10041 * Enable the communication b/t the webView and VideoViewProxy 10042 * 10043 * @hide only used by the Browser 10044 */ 10045 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 10046 mHTML5VideoViewProxy = proxy; 10047 } 10048 10049 /** 10050 * Set the time to wait between passing touches to WebCore. See also the 10051 * TOUCH_SENT_INTERVAL member for further discussion. 10052 * 10053 * @hide This is only used by the DRT test application. 10054 */ 10055 public void setTouchInterval(int interval) { 10056 mCurrentTouchInterval = interval; 10057 } 10058 10059 /** 10060 * Copy text into the clipboard. This is called indirectly from 10061 * WebViewCore. 10062 * @param text The text to put into the clipboard. 10063 */ 10064 private void copyToClipboard(String text) { 10065 ClipboardManager cm = (ClipboardManager)getContext() 10066 .getSystemService(Context.CLIPBOARD_SERVICE); 10067 ClipData clip = ClipData.newPlainText(getTitle(), text); 10068 cm.setPrimaryClip(clip); 10069 } 10070 10071 /** 10072 * Update our cache with updatedText. 10073 * @param updatedText The new text to put in our cache. 10074 * @hide 10075 */ 10076 protected void updateCachedTextfield(String updatedText) { 10077 // Also place our generation number so that when we look at the cache 10078 // we recognize that it is up to date. 10079 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 10080 } 10081 10082 /*package*/ void autoFillForm(int autoFillQueryId) { 10083 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 10084 } 10085 10086 /* package */ ViewManager getViewManager() { 10087 return mViewManager; 10088 } 10089 10090 private static void checkThread() { 10091 if (Looper.myLooper() != Looper.getMainLooper()) { 10092 Throwable throwable = new Throwable( 10093 "Warning: A WebView method was called on thread '" + 10094 Thread.currentThread().getName() + "'. " + 10095 "All WebView methods must be called on the UI thread. " + 10096 "Future versions of WebView may not support use on other threads."); 10097 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 10098 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 10099 } 10100 } 10101 10102 /** @hide send content invalidate */ 10103 protected void contentInvalidateAll() { 10104 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 10105 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 10106 } 10107 } 10108 10109 /** @hide discard all textures from tiles */ 10110 protected void discardAllTextures() { 10111 nativeDiscardAllTextures(); 10112 } 10113 10114 /** 10115 * Begin collecting per-tile profiling data 10116 * 10117 * @hide only used by profiling tests 10118 */ 10119 public void tileProfilingStart() { 10120 nativeTileProfilingStart(); 10121 } 10122 /** 10123 * Return per-tile profiling data 10124 * 10125 * @hide only used by profiling tests 10126 */ 10127 public float tileProfilingStop() { 10128 return nativeTileProfilingStop(); 10129 } 10130 10131 /** @hide only used by profiling tests */ 10132 public void tileProfilingClear() { 10133 nativeTileProfilingClear(); 10134 } 10135 /** @hide only used by profiling tests */ 10136 public int tileProfilingNumFrames() { 10137 return nativeTileProfilingNumFrames(); 10138 } 10139 /** @hide only used by profiling tests */ 10140 public int tileProfilingNumTilesInFrame(int frame) { 10141 return nativeTileProfilingNumTilesInFrame(frame); 10142 } 10143 /** @hide only used by profiling tests */ 10144 public int tileProfilingGetInt(int frame, int tile, String key) { 10145 return nativeTileProfilingGetInt(frame, tile, key); 10146 } 10147 /** @hide only used by profiling tests */ 10148 public float tileProfilingGetFloat(int frame, int tile, String key) { 10149 return nativeTileProfilingGetFloat(frame, tile, key); 10150 } 10151 10152 /** 10153 * Checks the focused content for an editable text field. This can be 10154 * text input or ContentEditable. 10155 * @return true if the focused item is an editable text field. 10156 */ 10157 boolean focusCandidateIsEditableText() { 10158 boolean isEditable = false; 10159 // TODO: reverse sDisableNavcache so that its name is positive 10160 boolean isNavcacheEnabled = !sDisableNavcache; 10161 if (isNavcacheEnabled) { 10162 isEditable = nativeFocusCandidateIsEditableText(mNativeClass); 10163 } else if (mFocusedNode != null) { 10164 isEditable = mFocusedNode.mEditable; 10165 } 10166 return isEditable; 10167 } 10168 10169 private native int nativeCacheHitFramePointer(); 10170 private native boolean nativeCacheHitIsPlugin(); 10171 private native Rect nativeCacheHitNodeBounds(); 10172 private native int nativeCacheHitNodePointer(); 10173 /* package */ native void nativeClearCursor(); 10174 private native void nativeCreate(int ptr, String drawableDir, boolean isHighEndGfx); 10175 private native int nativeCursorFramePointer(); 10176 private native Rect nativeCursorNodeBounds(); 10177 private native int nativeCursorNodePointer(); 10178 private native boolean nativeCursorIntersects(Rect visibleRect); 10179 private native boolean nativeCursorIsAnchor(); 10180 private native boolean nativeCursorIsTextInput(); 10181 private native Point nativeCursorPosition(); 10182 private native String nativeCursorText(); 10183 /** 10184 * Returns true if the native cursor node says it wants to handle key events 10185 * (ala plugins). This can only be called if mNativeClass is non-zero! 10186 */ 10187 private native boolean nativeCursorWantsKeyEvents(); 10188 private native void nativeDebugDump(); 10189 private native void nativeDestroy(); 10190 10191 /** 10192 * Draw the picture set with a background color and extra. If 10193 * "splitIfNeeded" is true and the return value is not 0, the return value 10194 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 10195 * native allocation can be freed. 10196 */ 10197 private native int nativeDraw(Canvas canvas, RectF visibleRect, 10198 int color, int extra, boolean splitIfNeeded); 10199 private native void nativeDumpDisplayTree(String urlOrNull); 10200 private native boolean nativeEvaluateLayersAnimations(int nativeInstance); 10201 private native int nativeGetDrawGLFunction(int nativeInstance, Rect rect, 10202 Rect viewRect, RectF visibleRect, float scale, int extras); 10203 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect, 10204 RectF visibleRect, float scale); 10205 private native void nativeExtendSelection(int x, int y); 10206 /* package */ native int nativeFocusCandidateFramePointer(); 10207 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 10208 /* package */ native boolean nativeFocusCandidateIsPassword(); 10209 private native boolean nativeFocusCandidateIsRtlText(); 10210 private native boolean nativeFocusCandidateIsTextInput(); 10211 private native boolean nativeFocusCandidateIsEditableText(int nativeClass); 10212 /* package */ native int nativeFocusCandidateMaxLength(); 10213 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 10214 /* package */ native boolean nativeFocusCandidateIsSpellcheck(); 10215 /* package */ native String nativeFocusCandidateName(); 10216 private native Rect nativeFocusCandidateNodeBounds(); 10217 /** 10218 * @return A Rect with left, top, right, bottom set to the corresponding 10219 * padding values in the focus candidate, if it is a textfield/textarea with 10220 * a style. Otherwise return null. This is not actually a rectangle; Rect 10221 * is being used to pass four integers. 10222 */ 10223 private native Rect nativeFocusCandidatePaddingRect(); 10224 /* package */ native int nativeFocusCandidatePointer(); 10225 private native String nativeFocusCandidateText(); 10226 /* package */ native float nativeFocusCandidateTextSize(); 10227 /* package */ native int nativeFocusCandidateLineHeight(); 10228 /** 10229 * Returns an integer corresponding to WebView.cpp::type. 10230 * See WebTextView.setType() 10231 */ 10232 private native int nativeFocusCandidateType(); 10233 private native int nativeFocusCandidateLayerId(); 10234 private native boolean nativeFocusIsPlugin(); 10235 private native Rect nativeFocusNodeBounds(); 10236 /* package */ native int nativeFocusNodePointer(); 10237 private native Rect nativeGetCursorRingBounds(); 10238 private native String nativeGetSelection(); 10239 private native boolean nativeHasCursorNode(); 10240 private native boolean nativeHasFocusNode(); 10241 private native void nativeHideCursor(); 10242 private native boolean nativeHitSelection(int x, int y); 10243 private native String nativeImageURI(int x, int y); 10244 private native Rect nativeLayerBounds(int layer); 10245 /* package */ native boolean nativeMoveCursorToNextTextInput(); 10246 // return true if the page has been scrolled 10247 private native boolean nativeMotionUp(int x, int y, int slop); 10248 // returns false if it handled the key 10249 private native boolean nativeMoveCursor(int keyCode, int count, 10250 boolean noScroll); 10251 private native int nativeMoveGeneration(); 10252 /** 10253 * @return true if the page should get the shift and arrow keys, rather 10254 * than select text/navigation. 10255 * 10256 * If the focus is a plugin, or if the focus and cursor match and are 10257 * a contentEditable element, then the page should handle these keys. 10258 */ 10259 private native boolean nativePageShouldHandleShiftAndArrows(); 10260 private native boolean nativePointInNavCache(int x, int y, int slop); 10261 private native void nativeSelectBestAt(Rect rect); 10262 private native void nativeSelectAt(int x, int y); 10263 private native void nativeSetExtendSelection(); 10264 private native void nativeSetFindIsUp(boolean isUp); 10265 private native void nativeSetHeightCanMeasure(boolean measure); 10266 private native boolean nativeSetBaseLayer(int nativeInstance, 10267 int layer, Region invalRegion, 10268 boolean showVisualIndicator, boolean isPictureAfterFirstLayout); 10269 private native int nativeGetBaseLayer(); 10270 private native void nativeShowCursorTimed(); 10271 private native void nativeReplaceBaseContent(int content); 10272 private native void nativeCopyBaseContentToPicture(Picture pict); 10273 private native boolean nativeHasContent(); 10274 private native void nativeSetSelectionPointer(int nativeInstance, 10275 boolean set, float scale, int x, int y); 10276 private native boolean nativeStartSelection(int x, int y); 10277 private native void nativeStopGL(); 10278 private native Rect nativeSubtractLayers(Rect content); 10279 private native int nativeTextGeneration(); 10280 private native void nativeDiscardAllTextures(); 10281 private native void nativeTileProfilingStart(); 10282 private native float nativeTileProfilingStop(); 10283 private native void nativeTileProfilingClear(); 10284 private native int nativeTileProfilingNumFrames(); 10285 private native int nativeTileProfilingNumTilesInFrame(int frame); 10286 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 10287 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 10288 // Never call this version except by updateCachedTextfield(String) - 10289 // we always want to pass in our generation number. 10290 private native void nativeUpdateCachedTextfield(String updatedText, 10291 int generation); 10292 private native boolean nativeWordSelection(int x, int y); 10293 // return NO_LEFTEDGE means failure. 10294 static final int NO_LEFTEDGE = -1; 10295 native int nativeGetBlockLeftEdge(int x, int y, float scale); 10296 10297 private native void nativeUseHardwareAccelSkia(boolean enabled); 10298 10299 // Returns a pointer to the scrollable LayerAndroid at the given point. 10300 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 10301 Rect scrollBounds); 10302 /** 10303 * Scroll the specified layer. 10304 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 10305 * @param newX Destination x position to which to scroll. 10306 * @param newY Destination y position to which to scroll. 10307 * @return True if the layer is successfully scrolled. 10308 */ 10309 private native boolean nativeScrollLayer(int layer, int newX, int newY); 10310 private native void nativeSetIsScrolling(boolean isScrolling); 10311 private native int nativeGetBackgroundColor(); 10312 native boolean nativeSetProperty(String key, String value); 10313 native String nativeGetProperty(String key); 10314 /** 10315 * See {@link ComponentCallbacks2} for the trim levels and descriptions 10316 */ 10317 private static native void nativeOnTrimMemory(int level); 10318 private static native void nativeSetPauseDrawing(int instance, boolean pause); 10319 private static native boolean nativeDisableNavcache(); 10320 private static native void nativeSetTextSelection(int instance, int selection); 10321 private static native int nativeGetHandleLayerId(int instance, int handle, 10322 Rect cursorLocation); 10323 private static native boolean nativeIsBaseFirst(int instance); 10324} 10325