WebViewClassic.java revision 413fab3f4410e3aebf0fd2268f3854163b656434
1/* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.animation.ObjectAnimator; 20import android.annotation.Widget; 21import android.app.ActivityManager; 22import android.app.AlertDialog; 23import android.content.BroadcastReceiver; 24import android.content.ClipData; 25import android.content.ClipboardManager; 26import android.content.ComponentCallbacks2; 27import android.content.Context; 28import android.content.DialogInterface; 29import android.content.DialogInterface.OnCancelListener; 30import android.content.Intent; 31import android.content.IntentFilter; 32import android.content.pm.PackageManager; 33import android.content.res.Configuration; 34import android.database.DataSetObserver; 35import android.graphics.Bitmap; 36import android.graphics.BitmapFactory; 37import android.graphics.BitmapShader; 38import android.graphics.Canvas; 39import android.graphics.Color; 40import android.graphics.ColorFilter; 41import android.graphics.DrawFilter; 42import android.graphics.Paint; 43import android.graphics.PaintFlagsDrawFilter; 44import android.graphics.Picture; 45import android.graphics.Point; 46import android.graphics.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.DisplayMetrics; 71import android.util.EventLog; 72import android.util.Log; 73import android.view.Display; 74import android.view.Gravity; 75import android.view.HapticFeedbackConstants; 76import android.view.HardwareCanvas; 77import android.view.InputDevice; 78import android.view.KeyCharacterMap; 79import android.view.KeyEvent; 80import android.view.LayoutInflater; 81import android.view.MotionEvent; 82import android.view.ScaleGestureDetector; 83import android.view.SoundEffectConstants; 84import android.view.VelocityTracker; 85import android.view.View; 86import android.view.View.MeasureSpec; 87import android.view.ViewConfiguration; 88import android.view.ViewGroup; 89import android.view.ViewParent; 90import android.view.ViewTreeObserver; 91import android.view.WindowManager; 92import android.view.accessibility.AccessibilityEvent; 93import android.view.accessibility.AccessibilityManager; 94import android.view.accessibility.AccessibilityNodeInfo; 95import android.view.inputmethod.BaseInputConnection; 96import android.view.inputmethod.EditorInfo; 97import android.view.inputmethod.InputConnection; 98import android.view.inputmethod.InputMethodManager; 99import android.webkit.WebView.HitTestResult; 100import android.webkit.WebView.PictureListener; 101import android.webkit.WebViewCore.DrawData; 102import android.webkit.WebViewCore.EventHub; 103import android.webkit.WebViewCore.TextFieldInitData; 104import android.webkit.WebViewCore.TouchEventData; 105import android.webkit.WebViewCore.TouchHighlightData; 106import android.webkit.WebViewCore.WebKitHitTest; 107import android.widget.AbsoluteLayout; 108import android.widget.Adapter; 109import android.widget.AdapterView; 110import android.widget.AdapterView.OnItemClickListener; 111import android.widget.ArrayAdapter; 112import android.widget.CheckedTextView; 113import android.widget.LinearLayout; 114import android.widget.ListView; 115import android.widget.OverScroller; 116import android.widget.PopupWindow; 117import android.widget.TextView; 118import android.widget.Toast; 119 120import junit.framework.Assert; 121 122import java.io.File; 123import java.io.FileInputStream; 124import java.io.FileNotFoundException; 125import java.io.FileOutputStream; 126import java.io.IOException; 127import java.io.InputStream; 128import java.io.OutputStream; 129import java.net.URLDecoder; 130import java.util.ArrayList; 131import java.util.HashMap; 132import java.util.HashSet; 133import java.util.List; 134import java.util.Map; 135import java.util.Set; 136import java.util.Vector; 137import java.util.regex.Matcher; 138import java.util.regex.Pattern; 139 140/** 141 * <p>A View that displays web pages. This class is the basis upon which you 142 * can roll your own web browser or simply display some online content within your Activity. 143 * It uses the WebKit rendering engine to display 144 * web pages and includes methods to navigate forward and backward 145 * through a history, zoom in and out, perform text searches and more.</p> 146 * <p>To enable the built-in zoom, set 147 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 148 * (introduced in API version 3). 149 * <p>Note that, in order for your Activity to access the Internet and load web pages 150 * in a WebView, you must add the {@code INTERNET} permissions to your 151 * Android Manifest file:</p> 152 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 153 * 154 * <p>This must be a child of the <a 155 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 156 * element.</p> 157 * 158 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 159 * tutorial</a>.</p> 160 * 161 * <h3>Basic usage</h3> 162 * 163 * <p>By default, a WebView provides no browser-like widgets, does not 164 * enable JavaScript and web page errors are ignored. If your goal is only 165 * to display some HTML as a part of your UI, this is probably fine; 166 * the user won't need to interact with the web page beyond reading 167 * it, and the web page won't need to interact with the user. If you 168 * actually want a full-blown web browser, then you probably want to 169 * invoke the Browser application with a URL Intent rather than show it 170 * with a WebView. For example: 171 * <pre> 172 * Uri uri = Uri.parse("http://www.example.com"); 173 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 174 * startActivity(intent); 175 * </pre> 176 * <p>See {@link android.content.Intent} for more information.</p> 177 * 178 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 179 * or set the entire Activity window as a WebView during {@link 180 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 181 * <pre class="prettyprint"> 182 * WebView webview = new WebView(this); 183 * setContentView(webview); 184 * </pre> 185 * 186 * <p>Then load the desired web page:</p> 187 * <pre> 188 * // Simplest usage: note that an exception will NOT be thrown 189 * // if there is an error loading this page (see below). 190 * webview.loadUrl("http://slashdot.org/"); 191 * 192 * // OR, you can also load from an HTML string: 193 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 194 * webview.loadData(summary, "text/html", null); 195 * // ... although note that there are restrictions on what this HTML can do. 196 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 197 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 198 * </pre> 199 * 200 * <p>A WebView has several customization points where you can add your 201 * own behavior. These are:</p> 202 * 203 * <ul> 204 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 205 * This class is called when something that might impact a 206 * browser UI happens, for instance, progress updates and 207 * JavaScript alerts are sent here (see <a 208 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 209 * </li> 210 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 211 * It will be called when things happen that impact the 212 * rendering of the content, eg, errors or form submissions. You 213 * can also intercept URL loading here (via {@link 214 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 215 * shouldOverrideUrlLoading()}).</li> 216 * <li>Modifying the {@link android.webkit.WebSettings}, such as 217 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 218 * setJavaScriptEnabled()}. </li> 219 * <li>Injecting Java objects into the WebView using the 220 * {@link android.webkit.WebView#addJavascriptInterface} method. This 221 * method allows you to inject Java objects into a page's JavaScript 222 * context, so that they can be accessed by JavaScript in the page.</li> 223 * </ul> 224 * 225 * <p>Here's a more complicated example, showing error handling, 226 * settings, and progress notification:</p> 227 * 228 * <pre class="prettyprint"> 229 * // Let's display the progress in the activity title bar, like the 230 * // browser app does. 231 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 232 * 233 * webview.getSettings().setJavaScriptEnabled(true); 234 * 235 * final Activity activity = this; 236 * webview.setWebChromeClient(new WebChromeClient() { 237 * public void onProgressChanged(WebView view, int progress) { 238 * // Activities and WebViews measure progress with different scales. 239 * // The progress meter will automatically disappear when we reach 100% 240 * activity.setProgress(progress * 1000); 241 * } 242 * }); 243 * webview.setWebViewClient(new WebViewClient() { 244 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 245 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 246 * } 247 * }); 248 * 249 * webview.loadUrl("http://slashdot.org/"); 250 * </pre> 251 * 252 * <h3>Cookie and window management</h3> 253 * 254 * <p>For obvious security reasons, your application has its own 255 * cache, cookie store etc.—it does not share the Browser 256 * application's data. Cookies are managed on a separate thread, so 257 * operations like index building don't block the UI 258 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 259 * if you want to use cookies in your application. 260 * </p> 261 * 262 * <p>By default, requests by the HTML to open new windows are 263 * ignored. This is true whether they be opened by JavaScript or by 264 * the target attribute on a link. You can customize your 265 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 266 * and render them in whatever manner you want.</p> 267 * 268 * <p>The standard behavior for an Activity is to be destroyed and 269 * recreated when the device orientation or any other configuration changes. This will cause 270 * the WebView to reload the current page. If you don't want that, you 271 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 272 * changes, and then just leave the WebView alone. It'll automatically 273 * re-orient itself as appropriate. Read <a 274 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 275 * more information about how to handle configuration changes during runtime.</p> 276 * 277 * 278 * <h3>Building web pages to support different screen densities</h3> 279 * 280 * <p>The screen density of a device is based on the screen resolution. A screen with low density 281 * has fewer available pixels per inch, where a screen with high density 282 * has more — sometimes significantly more — pixels per inch. The density of a 283 * screen is important because, other things being equal, a UI element (such as a button) whose 284 * height and width are defined in terms of screen pixels will appear larger on the lower density 285 * screen and smaller on the higher density screen. 286 * For simplicity, Android collapses all actual screen densities into three generalized densities: 287 * high, medium, and low.</p> 288 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 289 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 290 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 291 * are bigger). 292 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 293 * you (as a web developer) target screens with different screen densities.</p> 294 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 295 * <ul> 296 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 297 * default scaling factor used for the current device. For example, if the value of {@code 298 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 299 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 300 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 301 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 302 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 303 * (discussed below), then you can stop this default scaling behavior.</li> 304 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 305 * densities for which this style sheet is to be used. The corresponding value should be either 306 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 307 * density, or high density screens, respectively. For example: 308 * <pre> 309 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 310 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 311 * which is the high density pixel ratio.</p> 312 * </li> 313 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 314 * this to specify the target density for which the web page is designed, using the following 315 * values: 316 * <ul> 317 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 318 * occurs.</li> 319 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 320 * as appropriate.</li> 321 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 322 * low density screens scale down. This is also the default behavior.</li> 323 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 324 * as appropriate.</li> 325 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 326 * values are 70-400).</li> 327 * </ul> 328 * <p>Here's an example meta tag to specify the target density:</p> 329 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 330 * </ul> 331 * <p>If you want to modify your web page for different densities, by using the {@code 332 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 333 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 334 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 335 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 336 * 337 * <h3>HTML5 Video support</h3> 338 * 339 * <p>In order to support inline HTML5 video in your application, you need to have hardware 340 * acceleration turned on, and set a {@link android.webkit.WebChromeClient}. For full screen support, 341 * implementations of {@link WebChromeClient#onShowCustomView(View, WebChromeClient.CustomViewCallback)} 342 * and {@link WebChromeClient#onHideCustomView()} are required, 343 * {@link WebChromeClient#getVideoLoadingProgressView()} is optional. 344 * </p> 345 * 346 * @hide 347 */ 348// TODO: Remove duplicated API documentation and @hide from fields and methods, and 349// checkThread() call. (All left in for now to ease branch merging.) 350// TODO: Check if any WebView published API methods are called from within here, and if so 351// we should bounce the call out via the proxy to enable any sub-class to override it. 352@Widget 353@SuppressWarnings("deprecation") 354public final class WebViewClassic implements WebViewProvider, WebViewProvider.ScrollDelegate, 355 WebViewProvider.ViewDelegate { 356 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 357 @Override 358 public void onGlobalLayout() { 359 if (mWebView.isShown()) { 360 setGLRectViewport(); 361 } 362 } 363 } 364 365 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 366 @Override 367 public void onScrollChanged() { 368 if (mWebView.isShown()) { 369 setGLRectViewport(); 370 } 371 } 372 } 373 374 /** 375 * InputConnection used for ContentEditable. This captures changes 376 * to the text and sends them either as key strokes or text changes. 377 */ 378 private class WebViewInputConnection extends BaseInputConnection { 379 // Used for mapping characters to keys typed. 380 private KeyCharacterMap mKeyCharacterMap; 381 private boolean mIsKeySentByMe; 382 private int mInputType; 383 private int mImeOptions; 384 private String mHint; 385 private int mMaxLength; 386 387 public WebViewInputConnection() { 388 super(mWebView, true); 389 } 390 391 @Override 392 public boolean sendKeyEvent(KeyEvent event) { 393 // Some IMEs send key events directly using sendKeyEvents. 394 // WebViewInputConnection should treat these as text changes. 395 if (!mIsKeySentByMe) { 396 if (event.getAction() == KeyEvent.ACTION_UP) { 397 if (event.getKeyCode() == KeyEvent.KEYCODE_DEL) { 398 return deleteSurroundingText(1, 0); 399 } else if (event.getKeyCode() == KeyEvent.KEYCODE_FORWARD_DEL) { 400 return deleteSurroundingText(0, 1); 401 } else if (event.getUnicodeChar() != 0){ 402 String newComposingText = 403 Character.toString((char)event.getUnicodeChar()); 404 return commitText(newComposingText, 1); 405 } 406 } else if (event.getAction() == KeyEvent.ACTION_DOWN && 407 (event.getKeyCode() == KeyEvent.KEYCODE_DEL 408 || event.getKeyCode() == KeyEvent.KEYCODE_FORWARD_DEL 409 || event.getUnicodeChar() != 0)) { 410 return true; // only act on action_down 411 } 412 } 413 return super.sendKeyEvent(event); 414 } 415 416 public void setTextAndKeepSelection(CharSequence text) { 417 Editable editable = getEditable(); 418 int selectionStart = Selection.getSelectionStart(editable); 419 int selectionEnd = Selection.getSelectionEnd(editable); 420 text = limitReplaceTextByMaxLength(text, editable.length()); 421 editable.replace(0, editable.length(), text); 422 restartInput(); 423 // Keep the previous selection. 424 selectionStart = Math.min(selectionStart, editable.length()); 425 selectionEnd = Math.min(selectionEnd, editable.length()); 426 setSelection(selectionStart, selectionEnd); 427 } 428 429 public void replaceSelection(CharSequence text) { 430 Editable editable = getEditable(); 431 int selectionStart = Selection.getSelectionStart(editable); 432 int selectionEnd = Selection.getSelectionEnd(editable); 433 text = limitReplaceTextByMaxLength(text, selectionEnd - selectionStart); 434 setNewText(selectionStart, selectionEnd, text); 435 editable.replace(selectionStart, selectionEnd, text); 436 restartInput(); 437 // Move caret to the end of the new text 438 int newCaret = selectionStart + text.length(); 439 setSelection(newCaret, newCaret); 440 } 441 442 @Override 443 public boolean setComposingText(CharSequence text, int newCursorPosition) { 444 Editable editable = getEditable(); 445 int start = getComposingSpanStart(editable); 446 int end = getComposingSpanEnd(editable); 447 if (start < 0 || end < 0) { 448 start = Selection.getSelectionStart(editable); 449 end = Selection.getSelectionEnd(editable); 450 } 451 if (end < start) { 452 int temp = end; 453 end = start; 454 start = temp; 455 } 456 CharSequence limitedText = limitReplaceTextByMaxLength(text, end - start); 457 setNewText(start, end, limitedText); 458 if (limitedText != text) { 459 newCursorPosition -= text.length() - limitedText.length(); 460 } 461 super.setComposingText(limitedText, newCursorPosition); 462 if (limitedText != text) { 463 restartInput(); 464 int lastCaret = start + limitedText.length(); 465 finishComposingText(); 466 setSelection(lastCaret, lastCaret); 467 } 468 return true; 469 } 470 471 @Override 472 public boolean commitText(CharSequence text, int newCursorPosition) { 473 setComposingText(text, newCursorPosition); 474 int cursorPosition = Selection.getSelectionEnd(getEditable()); 475 setComposingRegion(cursorPosition, cursorPosition); 476 return true; 477 } 478 479 @Override 480 public boolean deleteSurroundingText(int leftLength, int rightLength) { 481 Editable editable = getEditable(); 482 int cursorPosition = Selection.getSelectionEnd(editable); 483 int startDelete = Math.max(0, cursorPosition - leftLength); 484 int endDelete = Math.min(editable.length(), 485 cursorPosition + rightLength); 486 setNewText(startDelete, endDelete, ""); 487 return super.deleteSurroundingText(leftLength, rightLength); 488 } 489 490 @Override 491 public boolean performEditorAction(int editorAction) { 492 493 boolean handled = true; 494 switch (editorAction) { 495 case EditorInfo.IME_ACTION_NEXT: 496 mWebView.requestFocus(View.FOCUS_FORWARD); 497 break; 498 case EditorInfo.IME_ACTION_PREVIOUS: 499 mWebView.requestFocus(View.FOCUS_BACKWARD); 500 break; 501 case EditorInfo.IME_ACTION_DONE: 502 WebViewClassic.this.hideSoftKeyboard(); 503 break; 504 case EditorInfo.IME_ACTION_GO: 505 case EditorInfo.IME_ACTION_SEARCH: 506 WebViewClassic.this.hideSoftKeyboard(); 507 String text = getEditable().toString(); 508 passToJavaScript(text, new KeyEvent(KeyEvent.ACTION_DOWN, 509 KeyEvent.KEYCODE_ENTER)); 510 passToJavaScript(text, new KeyEvent(KeyEvent.ACTION_UP, 511 KeyEvent.KEYCODE_ENTER)); 512 break; 513 514 default: 515 handled = super.performEditorAction(editorAction); 516 break; 517 } 518 519 return handled; 520 } 521 522 public void initEditorInfo(WebViewCore.TextFieldInitData initData) { 523 int type = initData.mType; 524 int inputType = InputType.TYPE_CLASS_TEXT 525 | InputType.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT; 526 int imeOptions = EditorInfo.IME_FLAG_NO_EXTRACT_UI 527 | EditorInfo.IME_FLAG_NO_FULLSCREEN; 528 if (!initData.mIsSpellCheckEnabled) { 529 inputType |= InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS; 530 } 531 if (WebTextView.TEXT_AREA != type 532 && initData.mIsTextFieldNext) { 533 imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT; 534 } 535 switch (type) { 536 case WebTextView.NORMAL_TEXT_FIELD: 537 imeOptions |= EditorInfo.IME_ACTION_GO; 538 break; 539 case WebTextView.TEXT_AREA: 540 inputType |= InputType.TYPE_TEXT_FLAG_MULTI_LINE 541 | InputType.TYPE_TEXT_FLAG_CAP_SENTENCES 542 | InputType.TYPE_TEXT_FLAG_AUTO_CORRECT; 543 imeOptions |= EditorInfo.IME_ACTION_NONE; 544 break; 545 case WebTextView.PASSWORD: 546 inputType |= EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 547 imeOptions |= EditorInfo.IME_ACTION_GO; 548 break; 549 case WebTextView.SEARCH: 550 imeOptions |= EditorInfo.IME_ACTION_SEARCH; 551 break; 552 case WebTextView.EMAIL: 553 // inputType needs to be overwritten because of the different text variation. 554 inputType = InputType.TYPE_CLASS_TEXT 555 | InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS; 556 imeOptions |= EditorInfo.IME_ACTION_GO; 557 break; 558 case WebTextView.NUMBER: 559 // inputType needs to be overwritten because of the different class. 560 inputType = InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_NORMAL 561 | InputType.TYPE_NUMBER_FLAG_SIGNED | InputType.TYPE_NUMBER_FLAG_DECIMAL; 562 // Number and telephone do not have both a Tab key and an 563 // action, so set the action to NEXT 564 imeOptions |= EditorInfo.IME_ACTION_NEXT; 565 break; 566 case WebTextView.TELEPHONE: 567 // inputType needs to be overwritten because of the different class. 568 inputType = InputType.TYPE_CLASS_PHONE; 569 imeOptions |= EditorInfo.IME_ACTION_NEXT; 570 break; 571 case WebTextView.URL: 572 // TYPE_TEXT_VARIATION_URI prevents Tab key from showing, so 573 // exclude it for now. 574 imeOptions |= EditorInfo.IME_ACTION_GO; 575 inputType |= InputType.TYPE_TEXT_VARIATION_URI; 576 break; 577 default: 578 imeOptions |= EditorInfo.IME_ACTION_GO; 579 break; 580 } 581 mHint = initData.mLabel; 582 mInputType = inputType; 583 mImeOptions = imeOptions; 584 mMaxLength = initData.mMaxLength; 585 } 586 587 public void setupEditorInfo(EditorInfo outAttrs) { 588 outAttrs.inputType = mInputType; 589 outAttrs.imeOptions = mImeOptions; 590 outAttrs.hintText = mHint; 591 outAttrs.initialCapsMode = getCursorCapsMode(InputType.TYPE_CLASS_TEXT); 592 } 593 594 /** 595 * Sends a text change to webkit indirectly. If it is a single- 596 * character add or delete, it sends it as a key stroke. If it cannot 597 * be represented as a key stroke, it sends it as a field change. 598 * @param start The start offset (inclusive) of the text being changed. 599 * @param end The end offset (exclusive) of the text being changed. 600 * @param text The new text to replace the changed text. 601 */ 602 private void setNewText(int start, int end, CharSequence text) { 603 mIsKeySentByMe = true; 604 Editable editable = getEditable(); 605 CharSequence original = editable.subSequence(start, end); 606 boolean isCharacterAdd = false; 607 boolean isCharacterDelete = false; 608 int textLength = text.length(); 609 int originalLength = original.length(); 610 if (textLength > originalLength) { 611 isCharacterAdd = (textLength == originalLength + 1) 612 && TextUtils.regionMatches(text, 0, original, 0, 613 originalLength); 614 } else if (originalLength > textLength) { 615 isCharacterDelete = (textLength == originalLength - 1) 616 && TextUtils.regionMatches(text, 0, original, 0, 617 textLength); 618 } 619 if (isCharacterAdd) { 620 sendCharacter(text.charAt(textLength - 1)); 621 } else if (isCharacterDelete) { 622 sendKey(KeyEvent.KEYCODE_DEL); 623 } else if ((textLength != originalLength) || 624 !TextUtils.regionMatches(text, 0, original, 0, 625 textLength)) { 626 // Send a message so that key strokes and text replacement 627 // do not come out of order. 628 Message replaceMessage = mPrivateHandler.obtainMessage( 629 REPLACE_TEXT, start, end, text.toString()); 630 mPrivateHandler.sendMessage(replaceMessage); 631 } 632 mIsKeySentByMe = false; 633 } 634 635 /** 636 * Send a single character to the WebView as a key down and up event. 637 * @param c The character to be sent. 638 */ 639 private void sendCharacter(char c) { 640 if (mKeyCharacterMap == null) { 641 mKeyCharacterMap = KeyCharacterMap.load(KeyCharacterMap.VIRTUAL_KEYBOARD); 642 } 643 char[] chars = new char[1]; 644 chars[0] = c; 645 KeyEvent[] events = mKeyCharacterMap.getEvents(chars); 646 if (events != null) { 647 for (KeyEvent event : events) { 648 sendKeyEvent(event); 649 } 650 } else { 651 Message msg = mPrivateHandler.obtainMessage(KEY_PRESS, (int) c, 0); 652 mPrivateHandler.sendMessage(msg); 653 } 654 } 655 656 /** 657 * Send a key event for a specific key code, not a standard 658 * unicode character. 659 * @param keyCode The key code to send. 660 */ 661 private void sendKey(int keyCode) { 662 long eventTime = SystemClock.uptimeMillis(); 663 sendKeyEvent(new KeyEvent(eventTime, eventTime, 664 KeyEvent.ACTION_DOWN, keyCode, 0, 0, 665 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 666 KeyEvent.FLAG_SOFT_KEYBOARD)); 667 sendKeyEvent(new KeyEvent(SystemClock.uptimeMillis(), eventTime, 668 KeyEvent.ACTION_UP, keyCode, 0, 0, 669 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 670 KeyEvent.FLAG_SOFT_KEYBOARD)); 671 } 672 673 private CharSequence limitReplaceTextByMaxLength(CharSequence text, 674 int numReplaced) { 675 if (mMaxLength > 0) { 676 Editable editable = getEditable(); 677 int maxReplace = mMaxLength - editable.length() + numReplaced; 678 if (maxReplace < text.length()) { 679 maxReplace = Math.max(maxReplace, 0); 680 // New length is greater than the maximum. trim it down. 681 text = text.subSequence(0, maxReplace); 682 } 683 } 684 return text; 685 } 686 687 private void restartInput() { 688 InputMethodManager imm = InputMethodManager.peekInstance(); 689 if (imm != null) { 690 // Since the text has changed, do not allow the IME to replace the 691 // existing text as though it were a completion. 692 imm.restartInput(mWebView); 693 } 694 } 695 } 696 697 private class PastePopupWindow extends PopupWindow implements View.OnClickListener { 698 private ViewGroup mContentView; 699 private TextView mPasteTextView; 700 701 public PastePopupWindow() { 702 super(mContext, null, 703 com.android.internal.R.attr.textSelectHandleWindowStyle); 704 setClippingEnabled(true); 705 LinearLayout linearLayout = new LinearLayout(mContext); 706 linearLayout.setOrientation(LinearLayout.HORIZONTAL); 707 mContentView = linearLayout; 708 mContentView.setBackgroundResource( 709 com.android.internal.R.drawable.text_edit_paste_window); 710 711 LayoutInflater inflater = (LayoutInflater)mContext. 712 getSystemService(Context.LAYOUT_INFLATER_SERVICE); 713 714 ViewGroup.LayoutParams wrapContent = new ViewGroup.LayoutParams( 715 ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 716 717 mPasteTextView = (TextView) inflater.inflate( 718 com.android.internal.R.layout.text_edit_action_popup_text, null); 719 mPasteTextView.setLayoutParams(wrapContent); 720 mContentView.addView(mPasteTextView); 721 mPasteTextView.setText(com.android.internal.R.string.paste); 722 mPasteTextView.setOnClickListener(this); 723 this.setContentView(mContentView); 724 } 725 726 public void show(Rect cursorRect, int windowLeft, int windowTop) { 727 measureContent(); 728 729 int width = mContentView.getMeasuredWidth(); 730 int height = mContentView.getMeasuredHeight(); 731 int y = cursorRect.top - height; 732 if (y < windowTop) { 733 // There's not enough room vertically, move it below the 734 // handle. 735 // The selection handle is vertically offset by 1/4 of the 736 // line height. 737 ensureSelectionHandles(); 738 y = cursorRect.bottom - (cursorRect.height() / 4) + 739 mSelectHandleCenter.getIntrinsicHeight(); 740 } 741 int x = cursorRect.centerX() - (width / 2); 742 if (x < windowLeft) { 743 x = windowLeft; 744 } 745 if (!isShowing()) { 746 showAtLocation(mWebView, Gravity.NO_GRAVITY, x, y); 747 } 748 update(x, y, width, height); 749 } 750 751 public void hide() { 752 dismiss(); 753 } 754 755 @Override 756 public void onClick(View view) { 757 pasteFromClipboard(); 758 selectionDone(); 759 } 760 761 protected void measureContent() { 762 final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics(); 763 mContentView.measure( 764 View.MeasureSpec.makeMeasureSpec(displayMetrics.widthPixels, 765 View.MeasureSpec.AT_MOST), 766 View.MeasureSpec.makeMeasureSpec(displayMetrics.heightPixels, 767 View.MeasureSpec.AT_MOST)); 768 } 769 } 770 771 // The listener to capture global layout change event. 772 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 773 774 // The listener to capture scroll event. 775 private InnerScrollChangedListener mScrollChangedListener = null; 776 777 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 778 // the screen all-the-time. Good for profiling our drawing code 779 static private final boolean AUTO_REDRAW_HACK = false; 780 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 781 private boolean mAutoRedraw; 782 783 // Reference to the AlertDialog displayed by InvokeListBox. 784 // It's used to dismiss the dialog in destroy if not done before. 785 private AlertDialog mListBoxDialog = null; 786 787 static final String LOGTAG = "webview"; 788 789 private ZoomManager mZoomManager; 790 791 private final Rect mGLRectViewport = new Rect(); 792 private final Rect mViewRectViewport = new Rect(); 793 private final RectF mVisibleContentRect = new RectF(); 794 private boolean mGLViewportEmpty = false; 795 WebViewInputConnection mInputConnection = null; 796 private int mFieldPointer; 797 private PastePopupWindow mPasteWindow; 798 799 private static class OnTrimMemoryListener implements ComponentCallbacks2 { 800 private static OnTrimMemoryListener sInstance = null; 801 802 static void init(Context c) { 803 if (sInstance == null) { 804 sInstance = new OnTrimMemoryListener(c.getApplicationContext()); 805 } 806 } 807 808 private OnTrimMemoryListener(Context c) { 809 c.registerComponentCallbacks(this); 810 } 811 812 @Override 813 public void onConfigurationChanged(Configuration newConfig) { 814 // Ignore 815 } 816 817 @Override 818 public void onLowMemory() { 819 // Ignore 820 } 821 822 @Override 823 public void onTrimMemory(int level) { 824 if (DebugFlags.WEB_VIEW) { 825 Log.d("WebView", "onTrimMemory: " + level); 826 } 827 // When framework reset EGL context during high memory pressure, all 828 // the existing GL resources for the html5 video will be destroyed 829 // at native side. 830 // Here we just need to clean up the Surface Texture which is static. 831 HTML5VideoInline.cleanupSurfaceTexture(); 832 WebViewClassic.nativeOnTrimMemory(level); 833 } 834 835 } 836 837 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 838 private CallbackProxy mCallbackProxy; 839 840 private WebViewDatabase mDatabase; 841 842 // SSL certificate for the main top-level page (if secure) 843 private SslCertificate mCertificate; 844 845 // Native WebView pointer that is 0 until the native object has been 846 // created. 847 private int mNativeClass; 848 // This would be final but it needs to be set to null when the WebView is 849 // destroyed. 850 private WebViewCore mWebViewCore; 851 // Handler for dispatching UI messages. 852 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 853 // Used to ignore changes to webkit text that arrives to the UI side after 854 // more key events. 855 private int mTextGeneration; 856 857 /* package */ void incrementTextGeneration() { mTextGeneration++; } 858 859 // Used by WebViewCore to create child views. 860 /* package */ ViewManager mViewManager; 861 862 // Used to display in full screen mode 863 PluginFullScreenHolder mFullScreenHolder; 864 865 /** 866 * Position of the last touch event in pixels. 867 * Use integer to prevent loss of dragging delta calculation accuracy; 868 * which was done in float and converted to integer, and resulted in gradual 869 * and compounding touch position and view dragging mismatch. 870 */ 871 private int mLastTouchX; 872 private int mLastTouchY; 873 private int mStartTouchX; 874 private int mStartTouchY; 875 private float mAverageAngle; 876 877 /** 878 * Time of the last touch event. 879 */ 880 private long mLastTouchTime; 881 882 /** 883 * Time of the last time sending touch event to WebViewCore 884 */ 885 private long mLastSentTouchTime; 886 887 /** 888 * The minimum elapsed time before sending another ACTION_MOVE event to 889 * WebViewCore. This really should be tuned for each type of the devices. 890 * For example in Google Map api test case, it takes Dream device at least 891 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 892 * triggering the layout and drawing the picture. While the same process 893 * takes 60+ms on the current high speed device. If we make 894 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 895 * to WebViewCore queue and the real layout and draw events will be pushed 896 * to further, which slows down the refresh rate. Choose 50 to favor the 897 * current high speed devices. For Dream like devices, 100 is a better 898 * choice. Maybe make this in the buildspec later. 899 * (Update 12/14/2010: changed to 0 since current device should be able to 900 * handle the raw events and Map team voted to have the raw events too. 901 */ 902 private static final int TOUCH_SENT_INTERVAL = 0; 903 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 904 905 /** 906 * Helper class to get velocity for fling 907 */ 908 VelocityTracker mVelocityTracker; 909 private int mMaximumFling; 910 private float mLastVelocity; 911 private float mLastVelX; 912 private float mLastVelY; 913 914 // The id of the native layer being scrolled. 915 private int mCurrentScrollingLayerId; 916 private Rect mScrollingLayerRect = new Rect(); 917 918 // only trigger accelerated fling if the new velocity is at least 919 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 920 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 921 922 /** 923 * Touch mode 924 */ 925 private int mTouchMode = TOUCH_DONE_MODE; 926 private static final int TOUCH_INIT_MODE = 1; 927 private static final int TOUCH_DRAG_START_MODE = 2; 928 private static final int TOUCH_DRAG_MODE = 3; 929 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 930 private static final int TOUCH_SHORTPRESS_MODE = 5; 931 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 932 private static final int TOUCH_DONE_MODE = 7; 933 private static final int TOUCH_PINCH_DRAG = 8; 934 private static final int TOUCH_DRAG_LAYER_MODE = 9; 935 936 // Whether to forward the touch events to WebCore 937 // Can only be set by WebKit via JNI. 938 private boolean mForwardTouchEvents = false; 939 940 // Whether to prevent default during touch. The initial value depends on 941 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 942 // for touch down. Otherwise UI will wait for the answer of the first 943 // confirmed move before taking over the control. 944 private static final int PREVENT_DEFAULT_NO = 0; 945 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 946 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 947 private static final int PREVENT_DEFAULT_YES = 3; 948 private static final int PREVENT_DEFAULT_IGNORE = 4; 949 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 950 951 // true when the touch movement exceeds the slop 952 private boolean mConfirmMove; 953 954 // if true, touch events will be first processed by WebCore, if prevent 955 // default is not set, the UI will continue handle them. 956 private boolean mDeferTouchProcess; 957 958 // to avoid interfering with the current touch events, track them 959 // separately. Currently no snapping or fling in the deferred process mode 960 private int mDeferTouchMode = TOUCH_DONE_MODE; 961 private float mLastDeferTouchX; 962 private float mLastDeferTouchY; 963 964 // Whether or not to draw the cursor ring. 965 private boolean mDrawCursorRing = true; 966 967 // true if onPause has been called (and not onResume) 968 private boolean mIsPaused; 969 970 private HitTestResult mInitialHitTestResult; 971 private WebKitHitTest mFocusedNode; 972 973 /** 974 * Customizable constant 975 */ 976 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 977 private int mTouchSlopSquare; 978 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 979 private int mDoubleTapSlopSquare; 980 // pre-computed density adjusted navigation slop 981 private int mNavSlop; 982 // This should be ViewConfiguration.getTapTimeout() 983 // But system time out is 100ms, which is too short for the browser. 984 // In the browser, if it switches out of tap too soon, jump tap won't work. 985 // In addition, a double tap on a trackpad will always have a duration of 986 // 300ms, so this value must be at least that (otherwise we will timeout the 987 // first tap and convert it to a long press). 988 private static final int TAP_TIMEOUT = 300; 989 // This should be ViewConfiguration.getLongPressTimeout() 990 // But system time out is 500ms, which is too short for the browser. 991 // With a short timeout, it's difficult to treat trigger a short press. 992 private static final int LONG_PRESS_TIMEOUT = 1000; 993 // needed to avoid flinging after a pause of no movement 994 private static final int MIN_FLING_TIME = 250; 995 // draw unfiltered after drag is held without movement 996 private static final int MOTIONLESS_TIME = 100; 997 // The amount of content to overlap between two screens when going through 998 // pages with the space bar, in pixels. 999 private static final int PAGE_SCROLL_OVERLAP = 24; 1000 1001 /** 1002 * These prevent calling requestLayout if either dimension is fixed. This 1003 * depends on the layout parameters and the measure specs. 1004 */ 1005 boolean mWidthCanMeasure; 1006 boolean mHeightCanMeasure; 1007 1008 // Remember the last dimensions we sent to the native side so we can avoid 1009 // sending the same dimensions more than once. 1010 int mLastWidthSent; 1011 int mLastHeightSent; 1012 // Since view height sent to webkit could be fixed to avoid relayout, this 1013 // value records the last sent actual view height. 1014 int mLastActualHeightSent; 1015 1016 private int mContentWidth; // cache of value from WebViewCore 1017 private int mContentHeight; // cache of value from WebViewCore 1018 1019 // Need to have the separate control for horizontal and vertical scrollbar 1020 // style than the View's single scrollbar style 1021 private boolean mOverlayHorizontalScrollbar = true; 1022 private boolean mOverlayVerticalScrollbar = false; 1023 1024 // our standard speed. this way small distances will be traversed in less 1025 // time than large distances, but we cap the duration, so that very large 1026 // distances won't take too long to get there. 1027 private static final int STD_SPEED = 480; // pixels per second 1028 // time for the longest scroll animation 1029 private static final int MAX_DURATION = 750; // milliseconds 1030 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 1031 1032 // Used by OverScrollGlow 1033 OverScroller mScroller; 1034 1035 private boolean mInOverScrollMode = false; 1036 private static Paint mOverScrollBackground; 1037 private static Paint mOverScrollBorder; 1038 1039 private boolean mWrapContent; 1040 private static final int MOTIONLESS_FALSE = 0; 1041 private static final int MOTIONLESS_PENDING = 1; 1042 private static final int MOTIONLESS_TRUE = 2; 1043 private static final int MOTIONLESS_IGNORE = 3; 1044 private int mHeldMotionless; 1045 1046 // An instance for injecting accessibility in WebViews with disabled 1047 // JavaScript or ones for which no accessibility script exists 1048 private AccessibilityInjector mAccessibilityInjector; 1049 1050 // flag indicating if accessibility script is injected so we 1051 // know to handle Shift and arrows natively first 1052 private boolean mAccessibilityScriptInjected; 1053 1054 1055 /** 1056 * How long the caret handle will last without being touched. 1057 */ 1058 private static final long CARET_HANDLE_STAMINA_MS = 3000; 1059 1060 private Drawable mSelectHandleLeft; 1061 private Drawable mSelectHandleRight; 1062 private Drawable mSelectHandleCenter; 1063 private Rect mSelectCursorBase = new Rect(); 1064 private int mSelectCursorBaseLayerId; 1065 private Rect mSelectCursorExtent = new Rect(); 1066 private int mSelectCursorExtentLayerId; 1067 private Rect mSelectDraggingCursor; 1068 private Point mSelectDraggingOffset = new Point(); 1069 private boolean mIsCaretSelection; 1070 static final int HANDLE_ID_START = 0; 1071 static final int HANDLE_ID_END = 1; 1072 static final int HANDLE_ID_BASE = 2; 1073 static final int HANDLE_ID_EXTENT = 3; 1074 1075 // the color used to highlight the touch rectangles 1076 static final int HIGHLIGHT_COLOR = 0x6633b5e5; 1077 // the region indicating where the user touched on the screen 1078 private Region mTouchHighlightRegion = new Region(); 1079 // the paint for the touch highlight 1080 private Paint mTouchHightlightPaint = new Paint(); 1081 // debug only 1082 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 1083 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 1084 private Paint mTouchCrossHairColor; 1085 private int mTouchHighlightX; 1086 private int mTouchHighlightY; 1087 private long mTouchHighlightRequested; 1088 1089 // Basically this proxy is used to tell the Video to update layer tree at 1090 // SetBaseLayer time and to pause when WebView paused. 1091 private HTML5VideoViewProxy mHTML5VideoViewProxy; 1092 1093 // If we are using a set picture, don't send view updates to webkit 1094 private boolean mBlockWebkitViewMessages = false; 1095 1096 // cached value used to determine if we need to switch drawing models 1097 private boolean mHardwareAccelSkia = false; 1098 1099 /* 1100 * Private message ids 1101 */ 1102 private static final int REMEMBER_PASSWORD = 1; 1103 private static final int NEVER_REMEMBER_PASSWORD = 2; 1104 private static final int SWITCH_TO_SHORTPRESS = 3; 1105 private static final int SWITCH_TO_LONGPRESS = 4; 1106 private static final int RELEASE_SINGLE_TAP = 5; 1107 private static final int DRAG_HELD_MOTIONLESS = 8; 1108 private static final int AWAKEN_SCROLL_BARS = 9; 1109 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 1110 private static final int SCROLL_SELECT_TEXT = 11; 1111 1112 1113 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 1114 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 1115 1116 /* 1117 * Package message ids 1118 */ 1119 static final int SCROLL_TO_MSG_ID = 101; 1120 static final int NEW_PICTURE_MSG_ID = 105; 1121 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 1122 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 1123 static final int UPDATE_ZOOM_RANGE = 109; 1124 static final int TAKE_FOCUS = 110; 1125 static final int CLEAR_TEXT_ENTRY = 111; 1126 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 1127 static final int SHOW_RECT_MSG_ID = 113; 1128 static final int LONG_PRESS_CENTER = 114; 1129 static final int PREVENT_TOUCH_ID = 115; 1130 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 1131 // obj=Rect in doc coordinates 1132 static final int INVAL_RECT_MSG_ID = 117; 1133 static final int REQUEST_KEYBOARD = 118; 1134 static final int SHOW_FULLSCREEN = 120; 1135 static final int HIDE_FULLSCREEN = 121; 1136 static final int REPLACE_BASE_CONTENT = 123; 1137 static final int FORM_DID_BLUR = 124; 1138 static final int UPDATE_MATCH_COUNT = 126; 1139 static final int CENTER_FIT_RECT = 127; 1140 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 1141 static final int SET_SCROLLBAR_MODES = 129; 1142 static final int SELECTION_STRING_CHANGED = 130; 1143 static final int HIT_TEST_RESULT = 131; 1144 static final int SAVE_WEBARCHIVE_FINISHED = 132; 1145 1146 static final int SET_AUTOFILLABLE = 133; 1147 static final int AUTOFILL_COMPLETE = 134; 1148 1149 static final int SCREEN_ON = 136; 1150 static final int ENTER_FULLSCREEN_VIDEO = 137; 1151 static final int UPDATE_ZOOM_DENSITY = 139; 1152 static final int EXIT_FULLSCREEN_VIDEO = 140; 1153 1154 static final int COPY_TO_CLIPBOARD = 141; 1155 static final int INIT_EDIT_FIELD = 142; 1156 static final int REPLACE_TEXT = 143; 1157 static final int CLEAR_CARET_HANDLE = 144; 1158 static final int KEY_PRESS = 145; 1159 1160 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 1161 private static final int LAST_PACKAGE_MSG_ID = HIT_TEST_RESULT; 1162 1163 static final String[] HandlerPrivateDebugString = { 1164 "REMEMBER_PASSWORD", // = 1; 1165 "NEVER_REMEMBER_PASSWORD", // = 2; 1166 "SWITCH_TO_SHORTPRESS", // = 3; 1167 "SWITCH_TO_LONGPRESS", // = 4; 1168 "RELEASE_SINGLE_TAP", // = 5; 1169 "REQUEST_FORM_DATA", // = 6; 1170 "RESUME_WEBCORE_PRIORITY", // = 7; 1171 "DRAG_HELD_MOTIONLESS", // = 8; 1172 "AWAKEN_SCROLL_BARS", // = 9; 1173 "PREVENT_DEFAULT_TIMEOUT", // = 10; 1174 "SCROLL_SELECT_TEXT" // = 11; 1175 }; 1176 1177 static final String[] HandlerPackageDebugString = { 1178 "SCROLL_TO_MSG_ID", // = 101; 1179 "102", // = 102; 1180 "103", // = 103; 1181 "104", // = 104; 1182 "NEW_PICTURE_MSG_ID", // = 105; 1183 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 1184 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 1185 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 1186 "UPDATE_ZOOM_RANGE", // = 109; 1187 "UNHANDLED_NAV_KEY", // = 110; 1188 "CLEAR_TEXT_ENTRY", // = 111; 1189 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 1190 "SHOW_RECT_MSG_ID", // = 113; 1191 "LONG_PRESS_CENTER", // = 114; 1192 "PREVENT_TOUCH_ID", // = 115; 1193 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 1194 "INVAL_RECT_MSG_ID", // = 117; 1195 "REQUEST_KEYBOARD", // = 118; 1196 "DO_MOTION_UP", // = 119; 1197 "SHOW_FULLSCREEN", // = 120; 1198 "HIDE_FULLSCREEN", // = 121; 1199 "DOM_FOCUS_CHANGED", // = 122; 1200 "REPLACE_BASE_CONTENT", // = 123; 1201 "FORM_DID_BLUR", // = 124; 1202 "RETURN_LABEL", // = 125; 1203 "UPDATE_MATCH_COUNT", // = 126; 1204 "CENTER_FIT_RECT", // = 127; 1205 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 1206 "SET_SCROLLBAR_MODES", // = 129; 1207 "SELECTION_STRING_CHANGED", // = 130; 1208 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 1209 "SAVE_WEBARCHIVE_FINISHED", // = 132; 1210 "SET_AUTOFILLABLE", // = 133; 1211 "AUTOFILL_COMPLETE", // = 134; 1212 "SELECT_AT", // = 135; 1213 "SCREEN_ON", // = 136; 1214 "ENTER_FULLSCREEN_VIDEO", // = 137; 1215 "UPDATE_SELECTION", // = 138; 1216 "UPDATE_ZOOM_DENSITY" // = 139; 1217 }; 1218 1219 // If the site doesn't use the viewport meta tag to specify the viewport, 1220 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 1221 static final int DEFAULT_VIEWPORT_WIDTH = 980; 1222 1223 // normally we try to fit the content to the minimum preferred width 1224 // calculated by the Webkit. To avoid the bad behavior when some site's 1225 // minimum preferred width keeps growing when changing the viewport width or 1226 // the minimum preferred width is huge, an upper limit is needed. 1227 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 1228 1229 // initial scale in percent. 0 means using default. 1230 private int mInitialScaleInPercent = 0; 1231 1232 // Whether or not a scroll event should be sent to webkit. This is only set 1233 // to false when restoring the scroll position. 1234 private boolean mSendScrollEvent = true; 1235 1236 private int mSnapScrollMode = SNAP_NONE; 1237 private static final int SNAP_NONE = 0; 1238 private static final int SNAP_LOCK = 1; // not a separate state 1239 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 1240 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 1241 private boolean mSnapPositive; 1242 1243 // keep these in sync with their counterparts in WebView.cpp 1244 private static final int DRAW_EXTRAS_NONE = 0; 1245 private static final int DRAW_EXTRAS_SELECTION = 1; 1246 private static final int DRAW_EXTRAS_CURSOR_RING = 2; 1247 1248 // keep this in sync with WebCore:ScrollbarMode in WebKit 1249 private static final int SCROLLBAR_AUTO = 0; 1250 private static final int SCROLLBAR_ALWAYSOFF = 1; 1251 // as we auto fade scrollbar, this is ignored. 1252 private static final int SCROLLBAR_ALWAYSON = 2; 1253 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 1254 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 1255 1256 // constants for determining script injection strategy 1257 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 1258 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 1259 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 1260 1261 // the alias via which accessibility JavaScript interface is exposed 1262 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 1263 1264 // Template for JavaScript that injects a screen-reader. 1265 private static final String ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE = 1266 "javascript:(function() {" + 1267 " var chooser = document.createElement('script');" + 1268 " chooser.type = 'text/javascript';" + 1269 " chooser.src = '%1s';" + 1270 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 1271 " })();"; 1272 1273 // Regular expression that matches the "axs" URL parameter. 1274 // The value of 0 means the accessibility script is opted out 1275 // The value of 1 means the accessibility script is already injected 1276 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 1277 1278 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 1279 private TextToSpeech mTextToSpeech; 1280 1281 // variable to cache the above pattern in case accessibility is enabled. 1282 private Pattern mMatchAxsUrlParameterPattern; 1283 1284 /** 1285 * Max distance to overscroll by in pixels. 1286 * This how far content can be pulled beyond its normal bounds by the user. 1287 */ 1288 private int mOverscrollDistance; 1289 1290 /** 1291 * Max distance to overfling by in pixels. 1292 * This is how far flinged content can move beyond the end of its normal bounds. 1293 */ 1294 private int mOverflingDistance; 1295 1296 private OverScrollGlow mOverScrollGlow; 1297 1298 // Used to match key downs and key ups 1299 private Vector<Integer> mKeysPressed; 1300 1301 /* package */ static boolean mLogEvent = true; 1302 1303 // for event log 1304 private long mLastTouchUpTime = 0; 1305 1306 private WebViewCore.AutoFillData mAutoFillData; 1307 1308 private static boolean sNotificationsEnabled = true; 1309 1310 /** 1311 * URI scheme for telephone number 1312 */ 1313 public static final String SCHEME_TEL = "tel:"; 1314 /** 1315 * URI scheme for email address 1316 */ 1317 public static final String SCHEME_MAILTO = "mailto:"; 1318 /** 1319 * URI scheme for map address 1320 */ 1321 public static final String SCHEME_GEO = "geo:0,0?q="; 1322 1323 private int mBackgroundColor = Color.WHITE; 1324 1325 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 1326 private int mAutoScrollX = 0; 1327 private int mAutoScrollY = 0; 1328 private int mMinAutoScrollX = 0; 1329 private int mMaxAutoScrollX = 0; 1330 private int mMinAutoScrollY = 0; 1331 private int mMaxAutoScrollY = 0; 1332 private Rect mScrollingLayerBounds = new Rect(); 1333 private boolean mSentAutoScrollMessage = false; 1334 1335 // used for serializing asynchronously handled touch events. 1336 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 1337 1338 // Used to track whether picture updating was paused due to a window focus change. 1339 private boolean mPictureUpdatePausedForFocusChange = false; 1340 1341 // Used to notify listeners of a new picture. 1342 private PictureListener mPictureListener; 1343 1344 /** 1345 * Refer to {@link WebView#requestFocusNodeHref(Message)} for more information 1346 */ 1347 static class FocusNodeHref { 1348 static final String TITLE = "title"; 1349 static final String URL = "url"; 1350 static final String SRC = "src"; 1351 } 1352 1353 public WebViewClassic(WebView webView, WebView.PrivateAccess privateAccess) { 1354 mWebView = webView; 1355 mWebViewPrivate = privateAccess; 1356 mContext = webView.getContext(); 1357 } 1358 1359 /** 1360 * Construct a new WebView with layout parameters, a default style and a set 1361 * of custom Javscript interfaces to be added to the WebView at initialization 1362 * time. This guarantees that these interfaces will be available when the JS 1363 * context is initialized. 1364 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1365 * object implementing those interfaces, as values. 1366 * @param privateBrowsing If true the web view will be initialized in private mode. 1367 * @hide This is an implementation detail. 1368 */ 1369 @Override 1370 public void init(Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1371 checkThread(); 1372 1373 Context context = mContext; 1374 1375 // Used by the chrome stack to find application paths 1376 JniUtil.setContext(context); 1377 1378 mCallbackProxy = new CallbackProxy(context, this); 1379 mViewManager = new ViewManager(this); 1380 L10nUtils.setApplicationContext(context.getApplicationContext()); 1381 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1382 mDatabase = WebViewDatabase.getInstance(context); 1383 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1384 mZoomManager = new ZoomManager(this, mCallbackProxy); 1385 1386 /* The init method must follow the creation of certain member variables, 1387 * such as the mZoomManager. 1388 */ 1389 init(); 1390 setupPackageListener(context); 1391 setupProxyListener(context); 1392 setupTrustStorageListener(context); 1393 updateMultiTouchSupport(context); 1394 1395 if (privateBrowsing) { 1396 startPrivateBrowsing(); 1397 } 1398 1399 mAutoFillData = new WebViewCore.AutoFillData(); 1400 } 1401 1402 // === START: WebView Proxy binding === 1403 // Keep the webview proxy / SPI related stuff in this section, to minimize merge conflicts. 1404 1405 static class Factory implements WebViewFactoryProvider, WebViewFactoryProvider.Statics { 1406 @Override 1407 public WebViewProvider createWebView(WebView webView, WebView.PrivateAccess privateAccess) { 1408 return new WebViewClassic(webView, privateAccess); 1409 } 1410 1411 @Override 1412 public Statics getStatics() { return this; } 1413 1414 @Override 1415 public String findAddress(String addr) { 1416 return WebViewClassic.findAddress(addr); 1417 } 1418 @Override 1419 public void setPlatformNotificationsEnabled(boolean enable) { 1420 if (enable) { 1421 WebViewClassic.enablePlatformNotifications(); 1422 } else { 1423 WebViewClassic.disablePlatformNotifications(); 1424 } 1425 } 1426 1427 } 1428 1429 // The webview that is bound to this WebViewClassic instance. Primarily needed for supplying 1430 // as the first param in the WebViewClient and WebChromeClient callbacks. 1431 final private WebView mWebView; 1432 // Callback interface, provides priviledged access into the WebView instance. 1433 final private WebView.PrivateAccess mWebViewPrivate; 1434 // Cached reference to mWebView.getContext(), for convenience. 1435 final private Context mContext; 1436 1437 /** 1438 * @return The webview proxy that this classic webview is bound to. 1439 */ 1440 public WebView getWebView() { 1441 return mWebView; 1442 } 1443 1444 @Override 1445 public ViewDelegate getViewDelegate() { 1446 return this; 1447 } 1448 1449 @Override 1450 public ScrollDelegate getScrollDelegate() { 1451 return this; 1452 } 1453 1454 public static WebViewClassic fromWebView(WebView webView) { 1455 return webView == null ? null : (WebViewClassic) webView.getWebViewProvider(); 1456 } 1457 1458 // Accessors, purely for convenience (and to reduce code churn during webview proxy migration). 1459 int getScrollX() { 1460 return mWebView.getScrollX(); 1461 } 1462 1463 int getScrollY() { 1464 return mWebView.getScrollY(); 1465 } 1466 1467 int getWidth() { 1468 return mWebView.getWidth(); 1469 } 1470 1471 int getHeight() { 1472 return mWebView.getHeight(); 1473 } 1474 1475 Context getContext() { 1476 return mContext; 1477 } 1478 1479 void invalidate() { 1480 mWebView.invalidate(); 1481 } 1482 1483 // Setters for the Scroll X & Y, without invoking the onScrollChanged etc code paths. 1484 void setScrollXRaw(int mScrollX) { 1485 mWebViewPrivate.setScrollXRaw(mScrollX); 1486 } 1487 1488 void setScrollYRaw(int mScrollY) { 1489 mWebViewPrivate.setScrollYRaw(mScrollY); 1490 } 1491 1492 // === END: WebView Proxy binding === 1493 1494 private static class TrustStorageListener extends BroadcastReceiver { 1495 @Override 1496 public void onReceive(Context context, Intent intent) { 1497 if (intent.getAction().equals(KeyChain.ACTION_STORAGE_CHANGED)) { 1498 handleCertTrustChanged(); 1499 } 1500 } 1501 } 1502 private static TrustStorageListener sTrustStorageListener; 1503 1504 /** 1505 * Handles update to the trust storage. 1506 */ 1507 private static void handleCertTrustChanged() { 1508 // send a message for indicating trust storage change 1509 WebViewCore.sendStaticMessage(EventHub.TRUST_STORAGE_UPDATED, null); 1510 } 1511 1512 /* 1513 * @param context This method expects this to be a valid context. 1514 */ 1515 private static void setupTrustStorageListener(Context context) { 1516 if (sTrustStorageListener != null ) { 1517 return; 1518 } 1519 IntentFilter filter = new IntentFilter(); 1520 filter.addAction(KeyChain.ACTION_STORAGE_CHANGED); 1521 sTrustStorageListener = new TrustStorageListener(); 1522 Intent current = 1523 context.getApplicationContext().registerReceiver(sTrustStorageListener, filter); 1524 if (current != null) { 1525 handleCertTrustChanged(); 1526 } 1527 } 1528 1529 private static class ProxyReceiver extends BroadcastReceiver { 1530 @Override 1531 public void onReceive(Context context, Intent intent) { 1532 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1533 handleProxyBroadcast(intent); 1534 } 1535 } 1536 } 1537 1538 /* 1539 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1540 */ 1541 private static ProxyReceiver sProxyReceiver; 1542 1543 /* 1544 * @param context This method expects this to be a valid context 1545 */ 1546 private static synchronized void setupProxyListener(Context context) { 1547 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1548 return; 1549 } 1550 IntentFilter filter = new IntentFilter(); 1551 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1552 sProxyReceiver = new ProxyReceiver(); 1553 Intent currentProxy = context.getApplicationContext().registerReceiver( 1554 sProxyReceiver, filter); 1555 if (currentProxy != null) { 1556 handleProxyBroadcast(currentProxy); 1557 } 1558 } 1559 1560 /* 1561 * @param context This method expects this to be a valid context 1562 */ 1563 private static synchronized void disableProxyListener(Context context) { 1564 if (sProxyReceiver == null) 1565 return; 1566 1567 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1568 sProxyReceiver = null; 1569 } 1570 1571 private static void handleProxyBroadcast(Intent intent) { 1572 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1573 if (proxyProperties == null || proxyProperties.getHost() == null) { 1574 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1575 return; 1576 } 1577 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1578 } 1579 1580 /* 1581 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1582 * or ACTION_PACKAGE_REMOVED. 1583 */ 1584 private static boolean sPackageInstallationReceiverAdded = false; 1585 1586 /* 1587 * A set of Google packages we monitor for the 1588 * navigator.isApplicationInstalled() API. Add additional packages as 1589 * needed. 1590 */ 1591 private static Set<String> sGoogleApps; 1592 static { 1593 sGoogleApps = new HashSet<String>(); 1594 sGoogleApps.add("com.google.android.youtube"); 1595 } 1596 1597 private static class PackageListener extends BroadcastReceiver { 1598 @Override 1599 public void onReceive(Context context, Intent intent) { 1600 final String action = intent.getAction(); 1601 final String packageName = intent.getData().getSchemeSpecificPart(); 1602 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1603 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1604 // if it is replacing, refreshPlugins() when adding 1605 return; 1606 } 1607 1608 if (sGoogleApps.contains(packageName)) { 1609 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1610 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1611 } else { 1612 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1613 } 1614 } 1615 1616 PluginManager pm = PluginManager.getInstance(context); 1617 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1618 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1619 } 1620 } 1621 } 1622 1623 private void setupPackageListener(Context context) { 1624 1625 /* 1626 * we must synchronize the instance check and the creation of the 1627 * receiver to ensure that only ONE receiver exists for all WebView 1628 * instances. 1629 */ 1630 synchronized (WebViewClassic.class) { 1631 1632 // if the receiver already exists then we do not need to register it 1633 // again 1634 if (sPackageInstallationReceiverAdded) { 1635 return; 1636 } 1637 1638 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1639 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1640 filter.addDataScheme("package"); 1641 BroadcastReceiver packageListener = new PackageListener(); 1642 context.getApplicationContext().registerReceiver(packageListener, filter); 1643 sPackageInstallationReceiverAdded = true; 1644 } 1645 1646 // check if any of the monitored apps are already installed 1647 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1648 1649 @Override 1650 protected Set<String> doInBackground(Void... unused) { 1651 Set<String> installedPackages = new HashSet<String>(); 1652 PackageManager pm = mContext.getPackageManager(); 1653 for (String name : sGoogleApps) { 1654 try { 1655 pm.getPackageInfo(name, 1656 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1657 installedPackages.add(name); 1658 } catch (PackageManager.NameNotFoundException e) { 1659 // package not found 1660 } 1661 } 1662 return installedPackages; 1663 } 1664 1665 // Executes on the UI thread 1666 @Override 1667 protected void onPostExecute(Set<String> installedPackages) { 1668 if (mWebViewCore != null) { 1669 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1670 } 1671 } 1672 }; 1673 task.execute(); 1674 } 1675 1676 void updateMultiTouchSupport(Context context) { 1677 mZoomManager.updateMultiTouchSupport(context); 1678 } 1679 1680 private void init() { 1681 OnTrimMemoryListener.init(mContext); 1682 mWebView.setWillNotDraw(false); 1683 mWebView.setFocusable(true); 1684 mWebView.setFocusableInTouchMode(true); 1685 mWebView.setClickable(true); 1686 mWebView.setLongClickable(true); 1687 1688 final ViewConfiguration configuration = ViewConfiguration.get(mContext); 1689 int slop = configuration.getScaledTouchSlop(); 1690 mTouchSlopSquare = slop * slop; 1691 slop = configuration.getScaledDoubleTapSlop(); 1692 mDoubleTapSlopSquare = slop * slop; 1693 final float density = mContext.getResources().getDisplayMetrics().density; 1694 // use one line height, 16 based on our current default font, for how 1695 // far we allow a touch be away from the edge of a link 1696 mNavSlop = (int) (16 * density); 1697 mZoomManager.init(density); 1698 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1699 1700 // Compute the inverse of the density squared. 1701 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1702 1703 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1704 mOverflingDistance = configuration.getScaledOverflingDistance(); 1705 1706 setScrollBarStyle(mWebViewPrivate.super_getScrollBarStyle()); 1707 // Initially use a size of two, since the user is likely to only hold 1708 // down two keys at a time (shift + another key) 1709 mKeysPressed = new Vector<Integer>(2); 1710 mHTML5VideoViewProxy = null ; 1711 } 1712 1713 @Override 1714 public boolean shouldDelayChildPressedState() { 1715 return true; 1716 } 1717 1718 /** 1719 * Adds accessibility APIs to JavaScript. 1720 * 1721 * Note: This method is responsible to performing the necessary 1722 * check if the accessibility APIs should be exposed. 1723 */ 1724 private void addAccessibilityApisToJavaScript() { 1725 if (AccessibilityManager.getInstance(mContext).isEnabled() 1726 && getSettings().getJavaScriptEnabled()) { 1727 // exposing the TTS for now ... 1728 final Context ctx = mContext; 1729 if (ctx != null) { 1730 final String packageName = ctx.getPackageName(); 1731 if (packageName != null) { 1732 mTextToSpeech = new TextToSpeech(ctx, null, null, 1733 packageName + ".**webview**", true); 1734 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1735 } 1736 } 1737 } 1738 } 1739 1740 /** 1741 * Removes accessibility APIs from JavaScript. 1742 */ 1743 private void removeAccessibilityApisFromJavaScript() { 1744 // exposing the TTS for now ... 1745 if (mTextToSpeech != null) { 1746 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1747 mTextToSpeech.shutdown(); 1748 mTextToSpeech = null; 1749 } 1750 } 1751 1752 @Override 1753 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 1754 info.setScrollable(isScrollableForAccessibility()); 1755 } 1756 1757 @Override 1758 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 1759 event.setScrollable(isScrollableForAccessibility()); 1760 event.setScrollX(getScrollX()); 1761 event.setScrollY(getScrollY()); 1762 final int convertedContentWidth = contentToViewX(getContentWidth()); 1763 final int adjustedViewWidth = getWidth() - mWebView.getPaddingLeft() 1764 - mWebView.getPaddingLeft(); 1765 event.setMaxScrollX(Math.max(convertedContentWidth - adjustedViewWidth, 0)); 1766 final int convertedContentHeight = contentToViewY(getContentHeight()); 1767 final int adjustedViewHeight = getHeight() - mWebView.getPaddingTop() 1768 - mWebView.getPaddingBottom(); 1769 event.setMaxScrollY(Math.max(convertedContentHeight - adjustedViewHeight, 0)); 1770 } 1771 1772 private boolean isScrollableForAccessibility() { 1773 return (contentToViewX(getContentWidth()) > getWidth() - mWebView.getPaddingLeft() 1774 - mWebView.getPaddingRight() 1775 || contentToViewY(getContentHeight()) > getHeight() - mWebView.getPaddingTop() 1776 - mWebView.getPaddingBottom()); 1777 } 1778 1779 @Override 1780 public void setOverScrollMode(int mode) { 1781 if (mode != View.OVER_SCROLL_NEVER) { 1782 if (mOverScrollGlow == null) { 1783 mOverScrollGlow = new OverScrollGlow(this); 1784 } 1785 } else { 1786 mOverScrollGlow = null; 1787 } 1788 } 1789 1790 /* package */ void adjustDefaultZoomDensity(int zoomDensity) { 1791 final float density = mContext.getResources().getDisplayMetrics().density 1792 * 100 / zoomDensity; 1793 updateDefaultZoomDensity(density); 1794 } 1795 1796 /* package */ void updateDefaultZoomDensity(float density) { 1797 mNavSlop = (int) (16 * density); 1798 mZoomManager.updateDefaultZoomDensity(density); 1799 } 1800 1801 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1802 String password, final Message resumeMsg) { 1803 boolean rVal = false; 1804 if (resumeMsg == null) { 1805 // null resumeMsg implies saving password silently 1806 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1807 } else { 1808 final Message remember = mPrivateHandler.obtainMessage( 1809 REMEMBER_PASSWORD); 1810 remember.getData().putString("host", schemePlusHost); 1811 remember.getData().putString("username", username); 1812 remember.getData().putString("password", password); 1813 remember.obj = resumeMsg; 1814 1815 final Message neverRemember = mPrivateHandler.obtainMessage( 1816 NEVER_REMEMBER_PASSWORD); 1817 neverRemember.getData().putString("host", schemePlusHost); 1818 neverRemember.getData().putString("username", username); 1819 neverRemember.getData().putString("password", password); 1820 neverRemember.obj = resumeMsg; 1821 1822 new AlertDialog.Builder(mContext) 1823 .setTitle(com.android.internal.R.string.save_password_label) 1824 .setMessage(com.android.internal.R.string.save_password_message) 1825 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1826 new DialogInterface.OnClickListener() { 1827 @Override 1828 public void onClick(DialogInterface dialog, int which) { 1829 resumeMsg.sendToTarget(); 1830 } 1831 }) 1832 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1833 new DialogInterface.OnClickListener() { 1834 @Override 1835 public void onClick(DialogInterface dialog, int which) { 1836 remember.sendToTarget(); 1837 } 1838 }) 1839 .setNegativeButton(com.android.internal.R.string.save_password_never, 1840 new DialogInterface.OnClickListener() { 1841 @Override 1842 public void onClick(DialogInterface dialog, int which) { 1843 neverRemember.sendToTarget(); 1844 } 1845 }) 1846 .setOnCancelListener(new OnCancelListener() { 1847 @Override 1848 public void onCancel(DialogInterface dialog) { 1849 resumeMsg.sendToTarget(); 1850 } 1851 }).show(); 1852 // Return true so that WebViewCore will pause while the dialog is 1853 // up. 1854 rVal = true; 1855 } 1856 return rVal; 1857 } 1858 1859 @Override 1860 public void setScrollBarStyle(int style) { 1861 if (style == View.SCROLLBARS_INSIDE_INSET 1862 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1863 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1864 } else { 1865 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1866 } 1867 } 1868 1869 /** 1870 * Specify whether the horizontal scrollbar has overlay style. 1871 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1872 */ 1873 public void setHorizontalScrollbarOverlay(boolean overlay) { 1874 checkThread(); 1875 mOverlayHorizontalScrollbar = overlay; 1876 } 1877 1878 /** 1879 * Specify whether the vertical scrollbar has overlay style. 1880 * @param overlay TRUE if vertical scrollbar should have overlay style. 1881 */ 1882 public void setVerticalScrollbarOverlay(boolean overlay) { 1883 checkThread(); 1884 mOverlayVerticalScrollbar = overlay; 1885 } 1886 1887 /** 1888 * Return whether horizontal scrollbar has overlay style 1889 * @return TRUE if horizontal scrollbar has overlay style. 1890 */ 1891 public boolean overlayHorizontalScrollbar() { 1892 checkThread(); 1893 return mOverlayHorizontalScrollbar; 1894 } 1895 1896 /** 1897 * Return whether vertical scrollbar has overlay style 1898 * @return TRUE if vertical scrollbar has overlay style. 1899 */ 1900 public boolean overlayVerticalScrollbar() { 1901 checkThread(); 1902 return mOverlayVerticalScrollbar; 1903 } 1904 1905 /* 1906 * Return the width of the view where the content of WebView should render 1907 * to. 1908 * Note: this can be called from WebCoreThread. 1909 */ 1910 /* package */ int getViewWidth() { 1911 if (!mWebView.isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1912 return getWidth(); 1913 } else { 1914 return Math.max(0, getWidth() - mWebView.getVerticalScrollbarWidth()); 1915 } 1916 } 1917 1918 // Interface to enable the browser to override title bar handling. 1919 public interface TitleBarDelegate { 1920 int getTitleHeight(); 1921 public void onSetEmbeddedTitleBar(final View title); 1922 } 1923 1924 /** 1925 * Returns the height (in pixels) of the embedded title bar (if any). Does not care about 1926 * scrolling 1927 * @hide 1928 */ 1929 protected int getTitleHeight() { 1930 if (mWebView instanceof TitleBarDelegate) { 1931 return ((TitleBarDelegate) mWebView).getTitleHeight(); 1932 } 1933 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1934 } 1935 1936 /** 1937 * Return the visible height (in pixels) of the embedded title bar (if any). 1938 * 1939 * @return This method is obsolete and always returns 0. 1940 * @deprecated This method is now obsolete. 1941 */ 1942 @Deprecated 1943 public int getVisibleTitleHeight() { 1944 // Actually, this method returns the height of the embedded title bar if one is set via the 1945 // hidden setEmbeddedTitleBar method. 1946 checkThread(); 1947 return getVisibleTitleHeightImpl(); 1948 } 1949 1950 private int getVisibleTitleHeightImpl() { 1951 // need to restrict mScrollY due to over scroll 1952 return Math.max(getTitleHeight() - Math.max(0, getScrollY()), 1953 getOverlappingActionModeHeight()); 1954 } 1955 1956 private int mCachedOverlappingActionModeHeight = -1; 1957 1958 private int getOverlappingActionModeHeight() { 1959 if (mFindCallback == null) { 1960 return 0; 1961 } 1962 if (mCachedOverlappingActionModeHeight < 0) { 1963 mWebView.getGlobalVisibleRect(mGlobalVisibleRect, mGlobalVisibleOffset); 1964 mCachedOverlappingActionModeHeight = Math.max(0, 1965 mFindCallback.getActionModeGlobalBottom() - mGlobalVisibleRect.top); 1966 } 1967 return mCachedOverlappingActionModeHeight; 1968 } 1969 1970 /* 1971 * Return the height of the view where the content of WebView should render 1972 * to. Note that this excludes mTitleBar, if there is one. 1973 * Note: this can be called from WebCoreThread. 1974 */ 1975 /* package */ int getViewHeight() { 1976 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1977 } 1978 1979 int getViewHeightWithTitle() { 1980 int height = getHeight(); 1981 if (mWebView.isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1982 height -= mWebViewPrivate.getHorizontalScrollbarHeight(); 1983 } 1984 return height; 1985 } 1986 1987 /** 1988 * @return The SSL certificate for the main top-level page or null if 1989 * there is no certificate (the site is not secure). 1990 */ 1991 public SslCertificate getCertificate() { 1992 checkThread(); 1993 return mCertificate; 1994 } 1995 1996 /** 1997 * Sets the SSL certificate for the main top-level page. 1998 */ 1999 public void setCertificate(SslCertificate certificate) { 2000 checkThread(); 2001 if (DebugFlags.WEB_VIEW) { 2002 Log.v(LOGTAG, "setCertificate=" + certificate); 2003 } 2004 // here, the certificate can be null (if the site is not secure) 2005 mCertificate = certificate; 2006 } 2007 2008 //------------------------------------------------------------------------- 2009 // Methods called by activity 2010 //------------------------------------------------------------------------- 2011 2012 /** 2013 * Save the username and password for a particular host in the WebView's 2014 * internal database. 2015 * @param host The host that required the credentials. 2016 * @param username The username for the given host. 2017 * @param password The password for the given host. 2018 */ 2019 public void savePassword(String host, String username, String password) { 2020 checkThread(); 2021 mDatabase.setUsernamePassword(host, username, password); 2022 } 2023 2024 /** 2025 * Set the HTTP authentication credentials for a given host and realm. 2026 * 2027 * @param host The host for the credentials. 2028 * @param realm The realm for the credentials. 2029 * @param username The username for the password. If it is null, it means 2030 * password can't be saved. 2031 * @param password The password 2032 */ 2033 public void setHttpAuthUsernamePassword(String host, String realm, 2034 String username, String password) { 2035 checkThread(); 2036 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 2037 } 2038 2039 /** 2040 * Retrieve the HTTP authentication username and password for a given 2041 * host & realm pair 2042 * 2043 * @param host The host for which the credentials apply. 2044 * @param realm The realm for which the credentials apply. 2045 * @return String[] if found, String[0] is username, which can be null and 2046 * String[1] is password. Return null if it can't find anything. 2047 */ 2048 public String[] getHttpAuthUsernamePassword(String host, String realm) { 2049 checkThread(); 2050 return mDatabase.getHttpAuthUsernamePassword(host, realm); 2051 } 2052 2053 /** 2054 * Remove Find or Select ActionModes, if active. 2055 */ 2056 private void clearActionModes() { 2057 if (mSelectCallback != null) { 2058 mSelectCallback.finish(); 2059 } 2060 if (mFindCallback != null) { 2061 mFindCallback.finish(); 2062 } 2063 } 2064 2065 /** 2066 * Called to clear state when moving from one page to another, or changing 2067 * in some other way that makes elements associated with the current page 2068 * (such as ActionModes) no longer relevant. 2069 */ 2070 private void clearHelpers() { 2071 hideSoftKeyboard(); 2072 clearActionModes(); 2073 dismissFullScreenMode(); 2074 cancelSelectDialog(); 2075 } 2076 2077 private void cancelSelectDialog() { 2078 if (mListBoxDialog != null) { 2079 mListBoxDialog.cancel(); 2080 mListBoxDialog = null; 2081 } 2082 } 2083 2084 /** 2085 * Destroy the internal state of the WebView. This method should be called 2086 * after the WebView has been removed from the view system. No other 2087 * methods may be called on a WebView after destroy. 2088 */ 2089 public void destroy() { 2090 checkThread(); 2091 destroyImpl(); 2092 } 2093 2094 private void destroyImpl() { 2095 clearHelpers(); 2096 if (mListBoxDialog != null) { 2097 mListBoxDialog.dismiss(); 2098 mListBoxDialog = null; 2099 } 2100 if (mNativeClass != 0) nativeStopGL(); 2101 if (mWebViewCore != null) { 2102 // Tell WebViewCore to destroy itself 2103 synchronized (this) { 2104 WebViewCore webViewCore = mWebViewCore; 2105 mWebViewCore = null; // prevent using partial webViewCore 2106 webViewCore.destroy(); 2107 } 2108 // Remove any pending messages that might not be serviced yet. 2109 mPrivateHandler.removeCallbacksAndMessages(null); 2110 } 2111 if (mNativeClass != 0) { 2112 nativeDestroy(); 2113 mNativeClass = 0; 2114 } 2115 } 2116 2117 /** 2118 * Enables platform notifications of data state and proxy changes. 2119 * Notifications are enabled by default. 2120 * 2121 * @deprecated This method is now obsolete. 2122 */ 2123 @Deprecated 2124 public static void enablePlatformNotifications() { 2125 checkThread(); 2126 synchronized (WebViewClassic.class) { 2127 sNotificationsEnabled = true; 2128 Context context = JniUtil.getContext(); 2129 if (context != null) 2130 setupProxyListener(context); 2131 } 2132 } 2133 2134 /** 2135 * Disables platform notifications of data state and proxy changes. 2136 * Notifications are enabled by default. 2137 * 2138 * @deprecated This method is now obsolete. 2139 */ 2140 @Deprecated 2141 public static void disablePlatformNotifications() { 2142 checkThread(); 2143 synchronized (WebViewClassic.class) { 2144 sNotificationsEnabled = false; 2145 Context context = JniUtil.getContext(); 2146 if (context != null) 2147 disableProxyListener(context); 2148 } 2149 } 2150 2151 /** 2152 * Sets JavaScript engine flags. 2153 * 2154 * @param flags JS engine flags in a String 2155 * 2156 * @hide This is an implementation detail. 2157 */ 2158 public void setJsFlags(String flags) { 2159 checkThread(); 2160 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 2161 } 2162 2163 /** 2164 * Inform WebView of the network state. This is used to set 2165 * the JavaScript property window.navigator.isOnline and 2166 * generates the online/offline event as specified in HTML5, sec. 5.7.7 2167 * @param networkUp boolean indicating if network is available 2168 */ 2169 public void setNetworkAvailable(boolean networkUp) { 2170 checkThread(); 2171 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 2172 networkUp ? 1 : 0, 0); 2173 } 2174 2175 /** 2176 * Inform WebView about the current network type. 2177 * {@hide} 2178 */ 2179 public void setNetworkType(String type, String subtype) { 2180 checkThread(); 2181 Map<String, String> map = new HashMap<String, String>(); 2182 map.put("type", type); 2183 map.put("subtype", subtype); 2184 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 2185 } 2186 /** 2187 * Save the state of this WebView used in 2188 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 2189 * method no longer stores the display data for this WebView. The previous 2190 * behavior could potentially leak files if {@link #restoreState} was never 2191 * called. See {@link #savePicture} and {@link #restorePicture} for saving 2192 * and restoring the display data. 2193 * @param outState The Bundle to store the WebView state. 2194 * @return The same copy of the back/forward list used to save the state. If 2195 * saveState fails, the returned list will be null. 2196 * @see #savePicture 2197 * @see #restorePicture 2198 */ 2199 public WebBackForwardList saveState(Bundle outState) { 2200 checkThread(); 2201 if (outState == null) { 2202 return null; 2203 } 2204 // We grab a copy of the back/forward list because a client of WebView 2205 // may have invalidated the history list by calling clearHistory. 2206 WebBackForwardList list = copyBackForwardList(); 2207 final int currentIndex = list.getCurrentIndex(); 2208 final int size = list.getSize(); 2209 // We should fail saving the state if the list is empty or the index is 2210 // not in a valid range. 2211 if (currentIndex < 0 || currentIndex >= size || size == 0) { 2212 return null; 2213 } 2214 outState.putInt("index", currentIndex); 2215 // FIXME: This should just be a byte[][] instead of ArrayList but 2216 // Parcel.java does not have the code to handle multi-dimensional 2217 // arrays. 2218 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 2219 for (int i = 0; i < size; i++) { 2220 WebHistoryItem item = list.getItemAtIndex(i); 2221 if (null == item) { 2222 // FIXME: this shouldn't happen 2223 // need to determine how item got set to null 2224 Log.w(LOGTAG, "saveState: Unexpected null history item."); 2225 return null; 2226 } 2227 byte[] data = item.getFlattenedData(); 2228 if (data == null) { 2229 // It would be very odd to not have any data for a given history 2230 // item. And we will fail to rebuild the history list without 2231 // flattened data. 2232 return null; 2233 } 2234 history.add(data); 2235 } 2236 outState.putSerializable("history", history); 2237 if (mCertificate != null) { 2238 outState.putBundle("certificate", 2239 SslCertificate.saveState(mCertificate)); 2240 } 2241 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 2242 mZoomManager.saveZoomState(outState); 2243 return list; 2244 } 2245 2246 /** 2247 * Save the current display data to the Bundle given. Used in conjunction 2248 * with {@link #saveState}. 2249 * @param b A Bundle to store the display data. 2250 * @param dest The file to store the serialized picture data. Will be 2251 * overwritten with this WebView's picture data. 2252 * @return True if the picture was successfully saved. 2253 * @deprecated This method is now obsolete. 2254 */ 2255 @Deprecated 2256 public boolean savePicture(Bundle b, final File dest) { 2257 checkThread(); 2258 if (dest == null || b == null) { 2259 return false; 2260 } 2261 final Picture p = capturePicture(); 2262 // Use a temporary file while writing to ensure the destination file 2263 // contains valid data. 2264 final File temp = new File(dest.getPath() + ".writing"); 2265 new Thread(new Runnable() { 2266 @Override 2267 public void run() { 2268 FileOutputStream out = null; 2269 try { 2270 out = new FileOutputStream(temp); 2271 p.writeToStream(out); 2272 // Writing the picture succeeded, rename the temporary file 2273 // to the destination. 2274 temp.renameTo(dest); 2275 } catch (Exception e) { 2276 // too late to do anything about it. 2277 } finally { 2278 if (out != null) { 2279 try { 2280 out.close(); 2281 } catch (Exception e) { 2282 // Can't do anything about that 2283 } 2284 } 2285 temp.delete(); 2286 } 2287 } 2288 }).start(); 2289 // now update the bundle 2290 b.putInt("scrollX", getScrollX()); 2291 b.putInt("scrollY", getScrollY()); 2292 mZoomManager.saveZoomState(b); 2293 return true; 2294 } 2295 2296 private void restoreHistoryPictureFields(Picture p, Bundle b) { 2297 int sx = b.getInt("scrollX", 0); 2298 int sy = b.getInt("scrollY", 0); 2299 2300 mDrawHistory = true; 2301 mHistoryPicture = p; 2302 2303 setScrollXRaw(sx); 2304 setScrollYRaw(sy); 2305 mZoomManager.restoreZoomState(b); 2306 final float scale = mZoomManager.getScale(); 2307 mHistoryWidth = Math.round(p.getWidth() * scale); 2308 mHistoryHeight = Math.round(p.getHeight() * scale); 2309 2310 invalidate(); 2311 } 2312 2313 /** 2314 * Restore the display data that was save in {@link #savePicture}. Used in 2315 * conjunction with {@link #restoreState}. 2316 * 2317 * Note that this will not work if the WebView is hardware accelerated. 2318 * @param b A Bundle containing the saved display data. 2319 * @param src The file where the picture data was stored. 2320 * @return True if the picture was successfully restored. 2321 * @deprecated This method is now obsolete. 2322 */ 2323 @Deprecated 2324 public boolean restorePicture(Bundle b, File src) { 2325 checkThread(); 2326 if (src == null || b == null) { 2327 return false; 2328 } 2329 if (!src.exists()) { 2330 return false; 2331 } 2332 try { 2333 final FileInputStream in = new FileInputStream(src); 2334 final Bundle copy = new Bundle(b); 2335 new Thread(new Runnable() { 2336 @Override 2337 public void run() { 2338 try { 2339 final Picture p = Picture.createFromStream(in); 2340 if (p != null) { 2341 // Post a runnable on the main thread to update the 2342 // history picture fields. 2343 mPrivateHandler.post(new Runnable() { 2344 @Override 2345 public void run() { 2346 restoreHistoryPictureFields(p, copy); 2347 } 2348 }); 2349 } 2350 } finally { 2351 try { 2352 in.close(); 2353 } catch (Exception e) { 2354 // Nothing we can do now. 2355 } 2356 } 2357 } 2358 }).start(); 2359 } catch (FileNotFoundException e){ 2360 e.printStackTrace(); 2361 } 2362 return true; 2363 } 2364 2365 /** 2366 * Saves the view data to the output stream. The output is highly 2367 * version specific, and may not be able to be loaded by newer versions 2368 * of WebView. 2369 * @param stream The {@link OutputStream} to save to 2370 * @return True if saved successfully 2371 * @hide 2372 */ 2373 public boolean saveViewState(OutputStream stream) { 2374 try { 2375 return ViewStateSerializer.serializeViewState(stream, this); 2376 } catch (IOException e) { 2377 Log.w(LOGTAG, "Failed to saveViewState", e); 2378 } 2379 return false; 2380 } 2381 2382 /** 2383 * Loads the view data from the input stream. See 2384 * {@link #saveViewState(OutputStream)} for more information. 2385 * @param stream The {@link InputStream} to load from 2386 * @return True if loaded successfully 2387 * @hide 2388 */ 2389 public boolean loadViewState(InputStream stream) { 2390 try { 2391 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 2392 mBlockWebkitViewMessages = true; 2393 setNewPicture(mLoadedPicture, true); 2394 mLoadedPicture.mViewState = null; 2395 return true; 2396 } catch (IOException e) { 2397 Log.w(LOGTAG, "Failed to loadViewState", e); 2398 } 2399 return false; 2400 } 2401 2402 /** 2403 * Clears the view state set with {@link #loadViewState(InputStream)}. 2404 * This WebView will then switch to showing the content from webkit 2405 * @hide 2406 */ 2407 public void clearViewState() { 2408 mBlockWebkitViewMessages = false; 2409 mLoadedPicture = null; 2410 invalidate(); 2411 } 2412 2413 /** 2414 * Restore the state of this WebView from the given map used in 2415 * {@link android.app.Activity#onRestoreInstanceState}. This method should 2416 * be called to restore the state of the WebView before using the object. If 2417 * it is called after the WebView has had a chance to build state (load 2418 * pages, create a back/forward list, etc.) there may be undesirable 2419 * side-effects. Please note that this method no longer restores the 2420 * display data for this WebView. See {@link #savePicture} and {@link 2421 * #restorePicture} for saving and restoring the display data. 2422 * @param inState The incoming Bundle of state. 2423 * @return The restored back/forward list or null if restoreState failed. 2424 * @see #savePicture 2425 * @see #restorePicture 2426 */ 2427 public WebBackForwardList restoreState(Bundle inState) { 2428 checkThread(); 2429 WebBackForwardList returnList = null; 2430 if (inState == null) { 2431 return returnList; 2432 } 2433 if (inState.containsKey("index") && inState.containsKey("history")) { 2434 mCertificate = SslCertificate.restoreState( 2435 inState.getBundle("certificate")); 2436 2437 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 2438 final int index = inState.getInt("index"); 2439 // We can't use a clone of the list because we need to modify the 2440 // shared copy, so synchronize instead to prevent concurrent 2441 // modifications. 2442 synchronized (list) { 2443 final List<byte[]> history = 2444 (List<byte[]>) inState.getSerializable("history"); 2445 final int size = history.size(); 2446 // Check the index bounds so we don't crash in native code while 2447 // restoring the history index. 2448 if (index < 0 || index >= size) { 2449 return null; 2450 } 2451 for (int i = 0; i < size; i++) { 2452 byte[] data = history.remove(0); 2453 if (data == null) { 2454 // If we somehow have null data, we cannot reconstruct 2455 // the item and thus our history list cannot be rebuilt. 2456 return null; 2457 } 2458 WebHistoryItem item = new WebHistoryItem(data); 2459 list.addHistoryItem(item); 2460 } 2461 // Grab the most recent copy to return to the caller. 2462 returnList = copyBackForwardList(); 2463 // Update the copy to have the correct index. 2464 returnList.setCurrentIndex(index); 2465 } 2466 // Restore private browsing setting. 2467 if (inState.getBoolean("privateBrowsingEnabled")) { 2468 getSettings().setPrivateBrowsingEnabled(true); 2469 } 2470 mZoomManager.restoreZoomState(inState); 2471 // Remove all pending messages because we are restoring previous 2472 // state. 2473 mWebViewCore.removeMessages(); 2474 // Send a restore state message. 2475 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 2476 } 2477 return returnList; 2478 } 2479 2480 /** 2481 * Load the given URL with the specified additional HTTP headers. 2482 * @param url The URL of the resource to load. 2483 * @param additionalHttpHeaders The additional headers to be used in the 2484 * HTTP request for this URL, specified as a map from name to 2485 * value. Note that if this map contains any of the headers 2486 * that are set by default by the WebView, such as those 2487 * controlling caching, accept types or the User-Agent, their 2488 * values may be overriden by the WebView's defaults. 2489 */ 2490 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 2491 checkThread(); 2492 loadUrlImpl(url, additionalHttpHeaders); 2493 } 2494 2495 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 2496 switchOutDrawHistory(); 2497 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 2498 arg.mUrl = url; 2499 arg.mExtraHeaders = extraHeaders; 2500 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 2501 clearHelpers(); 2502 } 2503 2504 /** 2505 * Load the given URL. 2506 * @param url The URL of the resource to load. 2507 */ 2508 public void loadUrl(String url) { 2509 checkThread(); 2510 loadUrlImpl(url); 2511 } 2512 2513 private void loadUrlImpl(String url) { 2514 if (url == null) { 2515 return; 2516 } 2517 loadUrlImpl(url, null); 2518 } 2519 2520 /** 2521 * Load the url with postData using "POST" method into the WebView. If url 2522 * is not a network url, it will be loaded with {link 2523 * {@link #loadUrl(String)} instead. 2524 * 2525 * @param url The url of the resource to load. 2526 * @param postData The data will be passed to "POST" request. 2527 */ 2528 public void postUrl(String url, byte[] postData) { 2529 checkThread(); 2530 if (URLUtil.isNetworkUrl(url)) { 2531 switchOutDrawHistory(); 2532 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2533 arg.mUrl = url; 2534 arg.mPostData = postData; 2535 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2536 clearHelpers(); 2537 } else { 2538 loadUrlImpl(url); 2539 } 2540 } 2541 2542 /** 2543 * Load the given data into the WebView using a 'data' scheme URL. 2544 * <p> 2545 * Note that JavaScript's same origin policy means that script running in a 2546 * page loaded using this method will be unable to access content loaded 2547 * using any scheme other than 'data', including 'http(s)'. To avoid this 2548 * restriction, use {@link 2549 * #loadDataWithBaseURL(String,String,String,String,String) 2550 * loadDataWithBaseURL()} with an appropriate base URL. 2551 * <p> 2552 * If the value of the encoding parameter is 'base64', then the data must 2553 * be encoded as base64. Otherwise, the data must use ASCII encoding for 2554 * octets inside the range of safe URL characters and use the standard %xx 2555 * hex encoding of URLs for octets outside that range. For example, 2556 * '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively. 2557 * <p> 2558 * The 'data' scheme URL formed by this method uses the default US-ASCII 2559 * charset. If you need need to set a different charset, you should form a 2560 * 'data' scheme URL which explicitly specifies a charset parameter in the 2561 * mediatype portion of the URL and call {@link #loadUrl(String)} instead. 2562 * Note that the charset obtained from the mediatype portion of a data URL 2563 * always overrides that specified in the HTML or XML document itself. 2564 * @param data A String of data in the given encoding. 2565 * @param mimeType The MIME type of the data, e.g. 'text/html'. 2566 * @param encoding The encoding of the data. 2567 */ 2568 public void loadData(String data, String mimeType, String encoding) { 2569 checkThread(); 2570 loadDataImpl(data, mimeType, encoding); 2571 } 2572 2573 private void loadDataImpl(String data, String mimeType, String encoding) { 2574 StringBuilder dataUrl = new StringBuilder("data:"); 2575 dataUrl.append(mimeType); 2576 if ("base64".equals(encoding)) { 2577 dataUrl.append(";base64"); 2578 } 2579 dataUrl.append(","); 2580 dataUrl.append(data); 2581 loadUrlImpl(dataUrl.toString()); 2582 } 2583 2584 /** 2585 * Load the given data into the WebView, using baseUrl as the base URL for 2586 * the content. The base URL is used both to resolve relative URLs and when 2587 * applying JavaScript's same origin policy. The historyUrl is used for the 2588 * history entry. 2589 * <p> 2590 * Note that content specified in this way can access local device files 2591 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2592 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2593 * <p> 2594 * If the base URL uses the data scheme, this method is equivalent to 2595 * calling {@link #loadData(String,String,String) loadData()} and the 2596 * historyUrl is ignored. 2597 * @param baseUrl URL to use as the page's base URL. If null defaults to 2598 * 'about:blank' 2599 * @param data A String of data in the given encoding. 2600 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2601 * defaults to 'text/html'. 2602 * @param encoding The encoding of the data. 2603 * @param historyUrl URL to use as the history entry, if null defaults to 2604 * 'about:blank'. 2605 */ 2606 public void loadDataWithBaseURL(String baseUrl, String data, 2607 String mimeType, String encoding, String historyUrl) { 2608 checkThread(); 2609 2610 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2611 loadDataImpl(data, mimeType, encoding); 2612 return; 2613 } 2614 switchOutDrawHistory(); 2615 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2616 arg.mBaseUrl = baseUrl; 2617 arg.mData = data; 2618 arg.mMimeType = mimeType; 2619 arg.mEncoding = encoding; 2620 arg.mHistoryUrl = historyUrl; 2621 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2622 clearHelpers(); 2623 } 2624 2625 /** 2626 * Saves the current view as a web archive. 2627 * 2628 * @param filename The filename where the archive should be placed. 2629 */ 2630 public void saveWebArchive(String filename) { 2631 checkThread(); 2632 saveWebArchiveImpl(filename, false, null); 2633 } 2634 2635 /* package */ static class SaveWebArchiveMessage { 2636 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2637 mBasename = basename; 2638 mAutoname = autoname; 2639 mCallback = callback; 2640 } 2641 2642 /* package */ final String mBasename; 2643 /* package */ final boolean mAutoname; 2644 /* package */ final ValueCallback<String> mCallback; 2645 /* package */ String mResultFile; 2646 } 2647 2648 /** 2649 * Saves the current view as a web archive. 2650 * 2651 * @param basename The filename where the archive should be placed. 2652 * @param autoname If false, takes basename to be a file. If true, basename 2653 * is assumed to be a directory in which a filename will be 2654 * chosen according to the url of the current page. 2655 * @param callback Called after the web archive has been saved. The 2656 * parameter for onReceiveValue will either be the filename 2657 * under which the file was saved, or null if saving the 2658 * file failed. 2659 */ 2660 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2661 checkThread(); 2662 saveWebArchiveImpl(basename, autoname, callback); 2663 } 2664 2665 private void saveWebArchiveImpl(String basename, boolean autoname, 2666 ValueCallback<String> callback) { 2667 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2668 new SaveWebArchiveMessage(basename, autoname, callback)); 2669 } 2670 2671 /** 2672 * Stop the current load. 2673 */ 2674 public void stopLoading() { 2675 checkThread(); 2676 // TODO: should we clear all the messages in the queue before sending 2677 // STOP_LOADING? 2678 switchOutDrawHistory(); 2679 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2680 } 2681 2682 /** 2683 * Reload the current url. 2684 */ 2685 public void reload() { 2686 checkThread(); 2687 clearHelpers(); 2688 switchOutDrawHistory(); 2689 mWebViewCore.sendMessage(EventHub.RELOAD); 2690 } 2691 2692 /** 2693 * Return true if this WebView has a back history item. 2694 * @return True iff this WebView has a back history item. 2695 */ 2696 public boolean canGoBack() { 2697 checkThread(); 2698 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2699 synchronized (l) { 2700 if (l.getClearPending()) { 2701 return false; 2702 } else { 2703 return l.getCurrentIndex() > 0; 2704 } 2705 } 2706 } 2707 2708 /** 2709 * Go back in the history of this WebView. 2710 */ 2711 public void goBack() { 2712 checkThread(); 2713 goBackOrForwardImpl(-1); 2714 } 2715 2716 /** 2717 * Return true if this WebView has a forward history item. 2718 * @return True iff this Webview has a forward history item. 2719 */ 2720 public boolean canGoForward() { 2721 checkThread(); 2722 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2723 synchronized (l) { 2724 if (l.getClearPending()) { 2725 return false; 2726 } else { 2727 return l.getCurrentIndex() < l.getSize() - 1; 2728 } 2729 } 2730 } 2731 2732 /** 2733 * Go forward in the history of this WebView. 2734 */ 2735 public void goForward() { 2736 checkThread(); 2737 goBackOrForwardImpl(1); 2738 } 2739 2740 /** 2741 * Return true if the page can go back or forward the given 2742 * number of steps. 2743 * @param steps The negative or positive number of steps to move the 2744 * history. 2745 */ 2746 public boolean canGoBackOrForward(int steps) { 2747 checkThread(); 2748 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2749 synchronized (l) { 2750 if (l.getClearPending()) { 2751 return false; 2752 } else { 2753 int newIndex = l.getCurrentIndex() + steps; 2754 return newIndex >= 0 && newIndex < l.getSize(); 2755 } 2756 } 2757 } 2758 2759 /** 2760 * Go to the history item that is the number of steps away from 2761 * the current item. Steps is negative if backward and positive 2762 * if forward. 2763 * @param steps The number of steps to take back or forward in the back 2764 * forward list. 2765 */ 2766 public void goBackOrForward(int steps) { 2767 checkThread(); 2768 goBackOrForwardImpl(steps); 2769 } 2770 2771 private void goBackOrForwardImpl(int steps) { 2772 goBackOrForward(steps, false); 2773 } 2774 2775 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2776 if (steps != 0) { 2777 clearHelpers(); 2778 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2779 ignoreSnapshot ? 1 : 0); 2780 } 2781 } 2782 2783 /** 2784 * Returns true if private browsing is enabled in this WebView. 2785 */ 2786 public boolean isPrivateBrowsingEnabled() { 2787 checkThread(); 2788 return getSettings().isPrivateBrowsingEnabled(); 2789 } 2790 2791 private void startPrivateBrowsing() { 2792 getSettings().setPrivateBrowsingEnabled(true); 2793 } 2794 2795 private boolean extendScroll(int y) { 2796 int finalY = mScroller.getFinalY(); 2797 int newY = pinLocY(finalY + y); 2798 if (newY == finalY) return false; 2799 mScroller.setFinalY(newY); 2800 mScroller.extendDuration(computeDuration(0, y)); 2801 return true; 2802 } 2803 2804 /** 2805 * Scroll the contents of the view up by half the view size 2806 * @param top true to jump to the top of the page 2807 * @return true if the page was scrolled 2808 */ 2809 public boolean pageUp(boolean top) { 2810 checkThread(); 2811 if (mNativeClass == 0) { 2812 return false; 2813 } 2814 if (top) { 2815 // go to the top of the document 2816 return pinScrollTo(getScrollX(), 0, true, 0); 2817 } 2818 // Page up 2819 int h = getHeight(); 2820 int y; 2821 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2822 y = -h + PAGE_SCROLL_OVERLAP; 2823 } else { 2824 y = -h / 2; 2825 } 2826 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2827 : extendScroll(y); 2828 } 2829 2830 /** 2831 * Scroll the contents of the view down by half the page size 2832 * @param bottom true to jump to bottom of page 2833 * @return true if the page was scrolled 2834 */ 2835 public boolean pageDown(boolean bottom) { 2836 checkThread(); 2837 if (mNativeClass == 0) { 2838 return false; 2839 } 2840 if (bottom) { 2841 return pinScrollTo(getScrollX(), computeRealVerticalScrollRange(), true, 0); 2842 } 2843 // Page down. 2844 int h = getHeight(); 2845 int y; 2846 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2847 y = h - PAGE_SCROLL_OVERLAP; 2848 } else { 2849 y = h / 2; 2850 } 2851 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2852 : extendScroll(y); 2853 } 2854 2855 /** 2856 * Clear the view so that onDraw() will draw nothing but white background, 2857 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2858 */ 2859 public void clearView() { 2860 checkThread(); 2861 mContentWidth = 0; 2862 mContentHeight = 0; 2863 setBaseLayer(0, null, false, false); 2864 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2865 } 2866 2867 /** 2868 * Return a new picture that captures the current display of the webview. 2869 * This is a copy of the display, and will be unaffected if the webview 2870 * later loads a different URL. 2871 * 2872 * @return a picture containing the current contents of the view. Note this 2873 * picture is of the entire document, and is not restricted to the 2874 * bounds of the view. 2875 */ 2876 public Picture capturePicture() { 2877 checkThread(); 2878 if (mNativeClass == 0) return null; 2879 Picture result = new Picture(); 2880 nativeCopyBaseContentToPicture(result); 2881 return result; 2882 } 2883 2884 /** 2885 * Return the current scale of the WebView 2886 * @return The current scale. 2887 */ 2888 public float getScale() { 2889 checkThread(); 2890 return mZoomManager.getScale(); 2891 } 2892 2893 /** 2894 * Compute the reading level scale of the WebView 2895 * @param scale The current scale. 2896 * @return The reading level scale. 2897 */ 2898 /*package*/ float computeReadingLevelScale(float scale) { 2899 return mZoomManager.computeReadingLevelScale(scale); 2900 } 2901 2902 /** 2903 * Set the initial scale for the WebView. 0 means default. If 2904 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2905 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2906 * WebView starts with this value as initial scale. 2907 * Please note that unlike the scale properties in the viewport meta tag, 2908 * this method doesn't take the screen density into account. 2909 * 2910 * @param scaleInPercent The initial scale in percent. 2911 */ 2912 public void setInitialScale(int scaleInPercent) { 2913 checkThread(); 2914 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2915 } 2916 2917 /** 2918 * Invoke the graphical zoom picker widget for this WebView. This will 2919 * result in the zoom widget appearing on the screen to control the zoom 2920 * level of this WebView. 2921 */ 2922 public void invokeZoomPicker() { 2923 checkThread(); 2924 if (!getSettings().supportZoom()) { 2925 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2926 return; 2927 } 2928 clearHelpers(); 2929 mZoomManager.invokeZoomPicker(); 2930 } 2931 2932 /** 2933 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2934 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2935 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2936 * anchor does not have a url or if it is a JavaScript url, the type will 2937 * be UNKNOWN_TYPE and the url has to be retrieved through 2938 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2939 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2940 * the "extra" field. A type of 2941 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2942 * a child node. If a phone number is found, the HitTestResult type is set 2943 * to PHONE_TYPE and the phone number is set in the "extra" field of 2944 * HitTestResult. If a map address is found, the HitTestResult type is set 2945 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2946 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2947 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2948 * HitTestResult type is set to UNKNOWN_TYPE. 2949 */ 2950 public HitTestResult getHitTestResult() { 2951 checkThread(); 2952 return mInitialHitTestResult; 2953 } 2954 2955 // No left edge for double-tap zoom alignment 2956 static final int NO_LEFTEDGE = -1; 2957 2958 int getBlockLeftEdge(int x, int y, float readingScale) { 2959 float invReadingScale = 1.0f / readingScale; 2960 int readingWidth = (int) (getViewWidth() * invReadingScale); 2961 int left = NO_LEFTEDGE; 2962 if (mFocusedNode != null) { 2963 final int length = mFocusedNode.mEnclosingParentRects.length; 2964 for (int i = 0; i < length; i++) { 2965 Rect rect = mFocusedNode.mEnclosingParentRects[i]; 2966 if (rect.width() < mFocusedNode.mHitTestSlop) { 2967 // ignore bounding boxes that are too small 2968 continue; 2969 } else if (left != NO_LEFTEDGE && rect.width() > readingWidth) { 2970 // stop when bounding box doesn't fit the screen width 2971 // at reading scale 2972 break; 2973 } 2974 2975 left = rect.left; 2976 } 2977 } 2978 2979 return left; 2980 } 2981 2982 /** 2983 * Request the anchor or image element URL at the last tapped point. 2984 * If hrefMsg is null, this method returns immediately and does not 2985 * dispatch hrefMsg to its target. If the tapped point hits an image, 2986 * an anchor, or an image in an anchor, the message associates 2987 * strings in named keys in its data. The value paired with the key 2988 * may be an empty string. 2989 * 2990 * @param hrefMsg This message will be dispatched with the result of the 2991 * request. The message data contains three keys: 2992 * - "url" returns the anchor's href attribute. 2993 * - "title" returns the anchor's text. 2994 * - "src" returns the image's src attribute. 2995 */ 2996 public void requestFocusNodeHref(Message hrefMsg) { 2997 checkThread(); 2998 if (hrefMsg == null) { 2999 return; 3000 } 3001 int contentX = viewToContentX(mLastTouchX + getScrollX()); 3002 int contentY = viewToContentY(mLastTouchY + getScrollY()); 3003 if (mFocusedNode != null && mFocusedNode.mHitTestX == contentX 3004 && mFocusedNode.mHitTestY == contentY) { 3005 hrefMsg.getData().putString(FocusNodeHref.URL, mFocusedNode.mLinkUrl); 3006 hrefMsg.getData().putString(FocusNodeHref.TITLE, mFocusedNode.mAnchorText); 3007 hrefMsg.getData().putString(FocusNodeHref.SRC, mFocusedNode.mImageUrl); 3008 hrefMsg.sendToTarget(); 3009 return; 3010 } 3011 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 3012 contentX, contentY, hrefMsg); 3013 } 3014 3015 /** 3016 * Request the url of the image last touched by the user. msg will be sent 3017 * to its target with a String representing the url as its object. 3018 * 3019 * @param msg This message will be dispatched with the result of the request 3020 * as the data member with "url" as key. The result can be null. 3021 */ 3022 public void requestImageRef(Message msg) { 3023 checkThread(); 3024 if (0 == mNativeClass) return; // client isn't initialized 3025 String url = mFocusedNode != null ? mFocusedNode.mImageUrl : null; 3026 Bundle data = msg.getData(); 3027 data.putString("url", url); 3028 msg.setData(data); 3029 msg.sendToTarget(); 3030 } 3031 3032 static int pinLoc(int x, int viewMax, int docMax) { 3033// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 3034 if (docMax < viewMax) { // the doc has room on the sides for "blank" 3035 // pin the short document to the top/left of the screen 3036 x = 0; 3037// Log.d(LOGTAG, "--- center " + x); 3038 } else if (x < 0) { 3039 x = 0; 3040// Log.d(LOGTAG, "--- zero"); 3041 } else if (x + viewMax > docMax) { 3042 x = docMax - viewMax; 3043// Log.d(LOGTAG, "--- pin " + x); 3044 } 3045 return x; 3046 } 3047 3048 // Expects x in view coordinates 3049 int pinLocX(int x) { 3050 if (mInOverScrollMode) return x; 3051 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 3052 } 3053 3054 // Expects y in view coordinates 3055 int pinLocY(int y) { 3056 if (mInOverScrollMode) return y; 3057 return pinLoc(y, getViewHeightWithTitle(), 3058 computeRealVerticalScrollRange() + getTitleHeight()); 3059 } 3060 3061 /** 3062 * A title bar which is embedded in this WebView, and scrolls along with it 3063 * vertically, but not horizontally. 3064 */ 3065 private View mTitleBar; 3066 3067 /** 3068 * the title bar rendering gravity 3069 */ 3070 private int mTitleGravity; 3071 3072 /** 3073 * Add or remove a title bar to be embedded into the WebView, and scroll 3074 * along with it vertically, while remaining in view horizontally. Pass 3075 * null to remove the title bar from the WebView, and return to drawing 3076 * the WebView normally without translating to account for the title bar. 3077 * @hide 3078 */ 3079 public void setEmbeddedTitleBar(View v) { 3080 if (mWebView instanceof TitleBarDelegate) { 3081 ((TitleBarDelegate) mWebView).onSetEmbeddedTitleBar(v); 3082 } 3083 if (mTitleBar == v) return; 3084 if (mTitleBar != null) { 3085 mWebView.removeView(mTitleBar); 3086 } 3087 if (null != v) { 3088 mWebView.addView(v, new AbsoluteLayout.LayoutParams( 3089 ViewGroup.LayoutParams.MATCH_PARENT, 3090 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 3091 } 3092 mTitleBar = v; 3093 } 3094 3095 /** 3096 * Set where to render the embedded title bar 3097 * NO_GRAVITY at the top of the page 3098 * TOP at the top of the screen 3099 * @hide 3100 */ 3101 public void setTitleBarGravity(int gravity) { 3102 mTitleGravity = gravity; 3103 // force refresh 3104 invalidate(); 3105 } 3106 3107 /** 3108 * Given a distance in view space, convert it to content space. Note: this 3109 * does not reflect translation, just scaling, so this should not be called 3110 * with coordinates, but should be called for dimensions like width or 3111 * height. 3112 */ 3113 private int viewToContentDimension(int d) { 3114 return Math.round(d * mZoomManager.getInvScale()); 3115 } 3116 3117 /** 3118 * Given an x coordinate in view space, convert it to content space. Also 3119 * may be used for absolute heights. 3120 */ 3121 /*package*/ int viewToContentX(int x) { 3122 return viewToContentDimension(x); 3123 } 3124 3125 /** 3126 * Given a y coordinate in view space, convert it to content space. 3127 * Takes into account the height of the title bar if there is one 3128 * embedded into the WebView. 3129 */ 3130 /*package*/ int viewToContentY(int y) { 3131 return viewToContentDimension(y - getTitleHeight()); 3132 } 3133 3134 /** 3135 * Given a x coordinate in view space, convert it to content space. 3136 * Returns the result as a float. 3137 */ 3138 private float viewToContentXf(int x) { 3139 return x * mZoomManager.getInvScale(); 3140 } 3141 3142 /** 3143 * Given a y coordinate in view space, convert it to content space. 3144 * Takes into account the height of the title bar if there is one 3145 * embedded into the WebView. Returns the result as a float. 3146 */ 3147 private float viewToContentYf(int y) { 3148 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 3149 } 3150 3151 /** 3152 * Given a distance in content space, convert it to view space. Note: this 3153 * does not reflect translation, just scaling, so this should not be called 3154 * with coordinates, but should be called for dimensions like width or 3155 * height. 3156 */ 3157 /*package*/ int contentToViewDimension(int d) { 3158 return Math.round(d * mZoomManager.getScale()); 3159 } 3160 3161 /** 3162 * Given an x coordinate in content space, convert it to view 3163 * space. 3164 */ 3165 /*package*/ int contentToViewX(int x) { 3166 return contentToViewDimension(x); 3167 } 3168 3169 /** 3170 * Given a y coordinate in content space, convert it to view 3171 * space. Takes into account the height of the title bar. 3172 */ 3173 /*package*/ int contentToViewY(int y) { 3174 return contentToViewDimension(y) + getTitleHeight(); 3175 } 3176 3177 private Rect contentToViewRect(Rect x) { 3178 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 3179 contentToViewX(x.right), contentToViewY(x.bottom)); 3180 } 3181 3182 /* To invalidate a rectangle in content coordinates, we need to transform 3183 the rect into view coordinates, so we can then call invalidate(...). 3184 3185 Normally, we would just call contentToView[XY](...), which eventually 3186 calls Math.round(coordinate * mActualScale). However, for invalidates, 3187 we need to account for the slop that occurs with antialiasing. To 3188 address that, we are a little more liberal in the size of the rect that 3189 we invalidate. 3190 3191 This liberal calculation calls floor() for the top/left, and ceil() for 3192 the bottom/right coordinates. This catches the possible extra pixels of 3193 antialiasing that we might have missed with just round(). 3194 */ 3195 3196 // Called by JNI to invalidate the View, given rectangle coordinates in 3197 // content space 3198 private void viewInvalidate(int l, int t, int r, int b) { 3199 final float scale = mZoomManager.getScale(); 3200 final int dy = getTitleHeight(); 3201 mWebView.invalidate((int)Math.floor(l * scale), 3202 (int)Math.floor(t * scale) + dy, 3203 (int)Math.ceil(r * scale), 3204 (int)Math.ceil(b * scale) + dy); 3205 } 3206 3207 // Called by JNI to invalidate the View after a delay, given rectangle 3208 // coordinates in content space 3209 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 3210 final float scale = mZoomManager.getScale(); 3211 final int dy = getTitleHeight(); 3212 mWebView.postInvalidateDelayed(delay, 3213 (int)Math.floor(l * scale), 3214 (int)Math.floor(t * scale) + dy, 3215 (int)Math.ceil(r * scale), 3216 (int)Math.ceil(b * scale) + dy); 3217 } 3218 3219 private void invalidateContentRect(Rect r) { 3220 viewInvalidate(r.left, r.top, r.right, r.bottom); 3221 } 3222 3223 // stop the scroll animation, and don't let a subsequent fling add 3224 // to the existing velocity 3225 private void abortAnimation() { 3226 mScroller.abortAnimation(); 3227 mLastVelocity = 0; 3228 } 3229 3230 /* call from webcoreview.draw(), so we're still executing in the UI thread 3231 */ 3232 private void recordNewContentSize(int w, int h, boolean updateLayout) { 3233 3234 // premature data from webkit, ignore 3235 if ((w | h) == 0) { 3236 return; 3237 } 3238 3239 // don't abort a scroll animation if we didn't change anything 3240 if (mContentWidth != w || mContentHeight != h) { 3241 // record new dimensions 3242 mContentWidth = w; 3243 mContentHeight = h; 3244 // If history Picture is drawn, don't update scroll. They will be 3245 // updated when we get out of that mode. 3246 if (!mDrawHistory) { 3247 // repin our scroll, taking into account the new content size 3248 updateScrollCoordinates(pinLocX(getScrollX()), pinLocY(getScrollY())); 3249 if (!mScroller.isFinished()) { 3250 // We are in the middle of a scroll. Repin the final scroll 3251 // position. 3252 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 3253 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 3254 } 3255 } 3256 } 3257 contentSizeChanged(updateLayout); 3258 } 3259 3260 // Used to avoid sending many visible rect messages. 3261 private Rect mLastVisibleRectSent = new Rect(); 3262 private Rect mLastGlobalRect = new Rect(); 3263 private Rect mVisibleRect = new Rect(); 3264 private Rect mGlobalVisibleRect = new Rect(); 3265 private Point mScrollOffset = new Point(); 3266 3267 Rect sendOurVisibleRect() { 3268 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 3269 calcOurContentVisibleRect(mVisibleRect); 3270 // Rect.equals() checks for null input. 3271 if (!mVisibleRect.equals(mLastVisibleRectSent)) { 3272 if (!mBlockWebkitViewMessages) { 3273 mScrollOffset.set(mVisibleRect.left, mVisibleRect.top); 3274 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 3275 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 3276 mSendScrollEvent ? 1 : 0, mScrollOffset); 3277 } 3278 mLastVisibleRectSent.set(mVisibleRect); 3279 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3280 } 3281 if (mWebView.getGlobalVisibleRect(mGlobalVisibleRect) 3282 && !mGlobalVisibleRect.equals(mLastGlobalRect)) { 3283 if (DebugFlags.WEB_VIEW) { 3284 Log.v(LOGTAG, "sendOurVisibleRect=(" + mGlobalVisibleRect.left + "," 3285 + mGlobalVisibleRect.top + ",r=" + mGlobalVisibleRect.right + ",b=" 3286 + mGlobalVisibleRect.bottom); 3287 } 3288 // TODO: the global offset is only used by windowRect() 3289 // in ChromeClientAndroid ; other clients such as touch 3290 // and mouse events could return view + screen relative points. 3291 if (!mBlockWebkitViewMessages) { 3292 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, mGlobalVisibleRect); 3293 } 3294 mLastGlobalRect.set(mGlobalVisibleRect); 3295 } 3296 return mVisibleRect; 3297 } 3298 3299 private Point mGlobalVisibleOffset = new Point(); 3300 // Sets r to be the visible rectangle of our webview in view coordinates 3301 private void calcOurVisibleRect(Rect r) { 3302 mWebView.getGlobalVisibleRect(r, mGlobalVisibleOffset); 3303 r.offset(-mGlobalVisibleOffset.x, -mGlobalVisibleOffset.y); 3304 } 3305 3306 // Sets r to be our visible rectangle in content coordinates 3307 private void calcOurContentVisibleRect(Rect r) { 3308 calcOurVisibleRect(r); 3309 r.left = viewToContentX(r.left); 3310 // viewToContentY will remove the total height of the title bar. Add 3311 // the visible height back in to account for the fact that if the title 3312 // bar is partially visible, the part of the visible rect which is 3313 // displaying our content is displaced by that amount. 3314 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 3315 r.right = viewToContentX(r.right); 3316 r.bottom = viewToContentY(r.bottom); 3317 } 3318 3319 private Rect mContentVisibleRect = new Rect(); 3320 // Sets r to be our visible rectangle in content coordinates. We use this 3321 // method on the native side to compute the position of the fixed layers. 3322 // Uses floating coordinates (necessary to correctly place elements when 3323 // the scale factor is not 1) 3324 private void calcOurContentVisibleRectF(RectF r) { 3325 calcOurVisibleRect(mContentVisibleRect); 3326 r.left = viewToContentXf(mContentVisibleRect.left); 3327 // viewToContentY will remove the total height of the title bar. Add 3328 // the visible height back in to account for the fact that if the title 3329 // bar is partially visible, the part of the visible rect which is 3330 // displaying our content is displaced by that amount. 3331 r.top = viewToContentYf(mContentVisibleRect.top + getVisibleTitleHeightImpl()); 3332 r.right = viewToContentXf(mContentVisibleRect.right); 3333 r.bottom = viewToContentYf(mContentVisibleRect.bottom); 3334 } 3335 3336 static class ViewSizeData { 3337 int mWidth; 3338 int mHeight; 3339 float mHeightWidthRatio; 3340 int mActualViewHeight; 3341 int mTextWrapWidth; 3342 int mAnchorX; 3343 int mAnchorY; 3344 float mScale; 3345 boolean mIgnoreHeight; 3346 } 3347 3348 /** 3349 * Compute unzoomed width and height, and if they differ from the last 3350 * values we sent, send them to webkit (to be used as new viewport) 3351 * 3352 * @param force ensures that the message is sent to webkit even if the width 3353 * or height has not changed since the last message 3354 * 3355 * @return true if new values were sent 3356 */ 3357 boolean sendViewSizeZoom(boolean force) { 3358 if (mBlockWebkitViewMessages) return false; 3359 if (mZoomManager.isPreventingWebkitUpdates()) return false; 3360 3361 int viewWidth = getViewWidth(); 3362 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 3363 // This height could be fixed and be different from actual visible height. 3364 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 3365 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 3366 // Make the ratio more accurate than (newHeight / newWidth), since the 3367 // latter both are calculated and rounded. 3368 float heightWidthRatio = (float) viewHeight / viewWidth; 3369 /* 3370 * Because the native side may have already done a layout before the 3371 * View system was able to measure us, we have to send a height of 0 to 3372 * remove excess whitespace when we grow our width. This will trigger a 3373 * layout and a change in content size. This content size change will 3374 * mean that contentSizeChanged will either call this method directly or 3375 * indirectly from onSizeChanged. 3376 */ 3377 if (newWidth > mLastWidthSent && mWrapContent) { 3378 newHeight = 0; 3379 heightWidthRatio = 0; 3380 } 3381 // Actual visible content height. 3382 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 3383 // Avoid sending another message if the dimensions have not changed. 3384 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 3385 actualViewHeight != mLastActualHeightSent) { 3386 ViewSizeData data = new ViewSizeData(); 3387 data.mWidth = newWidth; 3388 data.mHeight = newHeight; 3389 data.mHeightWidthRatio = heightWidthRatio; 3390 data.mActualViewHeight = actualViewHeight; 3391 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 3392 data.mScale = mZoomManager.getScale(); 3393 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 3394 && !mHeightCanMeasure; 3395 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 3396 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 3397 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 3398 mLastWidthSent = newWidth; 3399 mLastHeightSent = newHeight; 3400 mLastActualHeightSent = actualViewHeight; 3401 mZoomManager.clearDocumentAnchor(); 3402 return true; 3403 } 3404 return false; 3405 } 3406 3407 /** 3408 * Update the double-tap zoom. 3409 */ 3410 /* package */ void updateDoubleTapZoom(int doubleTapZoom) { 3411 mZoomManager.updateDoubleTapZoom(doubleTapZoom); 3412 } 3413 3414 private int computeRealHorizontalScrollRange() { 3415 if (mDrawHistory) { 3416 return mHistoryWidth; 3417 } else { 3418 // to avoid rounding error caused unnecessary scrollbar, use floor 3419 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 3420 } 3421 } 3422 3423 @Override 3424 public int computeHorizontalScrollRange() { 3425 int range = computeRealHorizontalScrollRange(); 3426 3427 // Adjust reported range if overscrolled to compress the scroll bars 3428 final int scrollX = getScrollX(); 3429 final int overscrollRight = computeMaxScrollX(); 3430 if (scrollX < 0) { 3431 range -= scrollX; 3432 } else if (scrollX > overscrollRight) { 3433 range += scrollX - overscrollRight; 3434 } 3435 3436 return range; 3437 } 3438 3439 @Override 3440 public int computeHorizontalScrollOffset() { 3441 return Math.max(getScrollX(), 0); 3442 } 3443 3444 private int computeRealVerticalScrollRange() { 3445 if (mDrawHistory) { 3446 return mHistoryHeight; 3447 } else { 3448 // to avoid rounding error caused unnecessary scrollbar, use floor 3449 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 3450 } 3451 } 3452 3453 @Override 3454 public int computeVerticalScrollRange() { 3455 int range = computeRealVerticalScrollRange(); 3456 3457 // Adjust reported range if overscrolled to compress the scroll bars 3458 final int scrollY = getScrollY(); 3459 final int overscrollBottom = computeMaxScrollY(); 3460 if (scrollY < 0) { 3461 range -= scrollY; 3462 } else if (scrollY > overscrollBottom) { 3463 range += scrollY - overscrollBottom; 3464 } 3465 3466 return range; 3467 } 3468 3469 @Override 3470 public int computeVerticalScrollOffset() { 3471 return Math.max(getScrollY() - getTitleHeight(), 0); 3472 } 3473 3474 @Override 3475 public int computeVerticalScrollExtent() { 3476 return getViewHeight(); 3477 } 3478 3479 /** @hide */ 3480 @Override 3481 public void onDrawVerticalScrollBar(Canvas canvas, 3482 Drawable scrollBar, 3483 int l, int t, int r, int b) { 3484 if (getScrollY() < 0) { 3485 t -= getScrollY(); 3486 } 3487 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3488 scrollBar.draw(canvas); 3489 } 3490 3491 @Override 3492 public void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3493 boolean clampedY) { 3494 // Special-case layer scrolling so that we do not trigger normal scroll 3495 // updating. 3496 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3497 scrollLayerTo(scrollX, scrollY); 3498 return; 3499 } 3500 mInOverScrollMode = false; 3501 int maxX = computeMaxScrollX(); 3502 int maxY = computeMaxScrollY(); 3503 if (maxX == 0) { 3504 // do not over scroll x if the page just fits the screen 3505 scrollX = pinLocX(scrollX); 3506 } else if (scrollX < 0 || scrollX > maxX) { 3507 mInOverScrollMode = true; 3508 } 3509 if (scrollY < 0 || scrollY > maxY) { 3510 mInOverScrollMode = true; 3511 } 3512 3513 int oldX = getScrollX(); 3514 int oldY = getScrollY(); 3515 3516 mWebViewPrivate.super_scrollTo(scrollX, scrollY); 3517 3518 if (mOverScrollGlow != null) { 3519 mOverScrollGlow.pullGlow(getScrollX(), getScrollY(), oldX, oldY, maxX, maxY); 3520 } 3521 } 3522 3523 /** 3524 * Get the url for the current page. This is not always the same as the url 3525 * passed to WebViewClient.onPageStarted because although the load for 3526 * that url has begun, the current page may not have changed. 3527 * @return The url for the current page. 3528 */ 3529 public String getUrl() { 3530 checkThread(); 3531 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3532 return h != null ? h.getUrl() : null; 3533 } 3534 3535 /** 3536 * Get the original url for the current page. This is not always the same 3537 * as the url passed to WebViewClient.onPageStarted because although the 3538 * load for that url has begun, the current page may not have changed. 3539 * Also, there may have been redirects resulting in a different url to that 3540 * originally requested. 3541 * @return The url that was originally requested for the current page. 3542 */ 3543 public String getOriginalUrl() { 3544 checkThread(); 3545 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3546 return h != null ? h.getOriginalUrl() : null; 3547 } 3548 3549 /** 3550 * Get the title for the current page. This is the title of the current page 3551 * until WebViewClient.onReceivedTitle is called. 3552 * @return The title for the current page. 3553 */ 3554 public String getTitle() { 3555 checkThread(); 3556 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3557 return h != null ? h.getTitle() : null; 3558 } 3559 3560 /** 3561 * Get the favicon for the current page. This is the favicon of the current 3562 * page until WebViewClient.onReceivedIcon is called. 3563 * @return The favicon for the current page. 3564 */ 3565 public Bitmap getFavicon() { 3566 checkThread(); 3567 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3568 return h != null ? h.getFavicon() : null; 3569 } 3570 3571 /** 3572 * Get the touch icon url for the apple-touch-icon <link> element, or 3573 * a URL on this site's server pointing to the standard location of a 3574 * touch icon. 3575 * @hide 3576 */ 3577 public String getTouchIconUrl() { 3578 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3579 return h != null ? h.getTouchIconUrl() : null; 3580 } 3581 3582 /** 3583 * Get the progress for the current page. 3584 * @return The progress for the current page between 0 and 100. 3585 */ 3586 public int getProgress() { 3587 checkThread(); 3588 return mCallbackProxy.getProgress(); 3589 } 3590 3591 /** 3592 * @return the height of the HTML content. 3593 */ 3594 public int getContentHeight() { 3595 checkThread(); 3596 return mContentHeight; 3597 } 3598 3599 /** 3600 * @return the width of the HTML content. 3601 * @hide 3602 */ 3603 public int getContentWidth() { 3604 return mContentWidth; 3605 } 3606 3607 /** 3608 * @hide 3609 */ 3610 public int getPageBackgroundColor() { 3611 return nativeGetBackgroundColor(); 3612 } 3613 3614 /** 3615 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3616 * is a global requests, not restricted to just this webview. This can be 3617 * useful if the application has been paused. 3618 */ 3619 public void pauseTimers() { 3620 checkThread(); 3621 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3622 } 3623 3624 /** 3625 * Resume all layout, parsing, and JavaScript timers for all webviews. 3626 * This will resume dispatching all timers. 3627 */ 3628 public void resumeTimers() { 3629 checkThread(); 3630 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3631 } 3632 3633 /** 3634 * Call this to pause any extra processing associated with this WebView and 3635 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3636 * is taken offscreen, this could be called to reduce unnecessary CPU or 3637 * network traffic. When the WebView is again "active", call onResume(). 3638 * 3639 * Note that this differs from pauseTimers(), which affects all WebViews. 3640 */ 3641 public void onPause() { 3642 checkThread(); 3643 if (!mIsPaused) { 3644 mIsPaused = true; 3645 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3646 // We want to pause the current playing video when switching out 3647 // from the current WebView/tab. 3648 if (mHTML5VideoViewProxy != null) { 3649 mHTML5VideoViewProxy.pauseAndDispatch(); 3650 } 3651 if (mNativeClass != 0) { 3652 nativeSetPauseDrawing(mNativeClass, true); 3653 } 3654 3655 cancelSelectDialog(); 3656 WebCoreThreadWatchdog.pause(); 3657 } 3658 } 3659 3660 @Override 3661 public void onWindowVisibilityChanged(int visibility) { 3662 updateDrawingState(); 3663 } 3664 3665 void updateDrawingState() { 3666 if (mNativeClass == 0 || mIsPaused) return; 3667 if (mWebView.getWindowVisibility() != View.VISIBLE) { 3668 nativeSetPauseDrawing(mNativeClass, true); 3669 } else if (mWebView.getVisibility() != View.VISIBLE) { 3670 nativeSetPauseDrawing(mNativeClass, true); 3671 } else { 3672 nativeSetPauseDrawing(mNativeClass, false); 3673 } 3674 } 3675 3676 /** 3677 * Call this to resume a WebView after a previous call to onPause(). 3678 */ 3679 public void onResume() { 3680 checkThread(); 3681 if (mIsPaused) { 3682 mIsPaused = false; 3683 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3684 if (mNativeClass != 0) { 3685 nativeSetPauseDrawing(mNativeClass, false); 3686 } 3687 } 3688 // Ensure that the watchdog has a currently valid Context to be able to display 3689 // a prompt dialog. For example, if the Activity was finished whilst the WebCore 3690 // thread was blocked and the Activity is started again, we may reuse the blocked 3691 // thread, but we'll have a new Activity. 3692 WebCoreThreadWatchdog.updateContext(mContext); 3693 // We get a call to onResume for new WebViews (i.e. mIsPaused will be false). We need 3694 // to ensure that the Watchdog thread is running for the new WebView, so call 3695 // it outside the if block above. 3696 WebCoreThreadWatchdog.resume(); 3697 } 3698 3699 /** 3700 * Returns true if the view is paused, meaning onPause() was called. Calling 3701 * onResume() sets the paused state back to false. 3702 * @hide 3703 */ 3704 public boolean isPaused() { 3705 return mIsPaused; 3706 } 3707 3708 /** 3709 * Call this to inform the view that memory is low so that it can 3710 * free any available memory. 3711 */ 3712 public void freeMemory() { 3713 checkThread(); 3714 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3715 } 3716 3717 /** 3718 * Clear the resource cache. Note that the cache is per-application, so 3719 * this will clear the cache for all WebViews used. 3720 * 3721 * @param includeDiskFiles If false, only the RAM cache is cleared. 3722 */ 3723 public void clearCache(boolean includeDiskFiles) { 3724 checkThread(); 3725 // Note: this really needs to be a static method as it clears cache for all 3726 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3727 // we can't make this static. 3728 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3729 includeDiskFiles ? 1 : 0, 0); 3730 } 3731 3732 /** 3733 * Make sure that clearing the form data removes the adapter from the 3734 * currently focused textfield if there is one. 3735 */ 3736 public void clearFormData() { 3737 checkThread(); 3738 // TODO: Implement b/6083041 3739 } 3740 3741 /** 3742 * Tell the WebView to clear its internal back/forward list. 3743 */ 3744 public void clearHistory() { 3745 checkThread(); 3746 mCallbackProxy.getBackForwardList().setClearPending(); 3747 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3748 } 3749 3750 /** 3751 * Clear the SSL preferences table stored in response to proceeding with SSL 3752 * certificate errors. 3753 */ 3754 public void clearSslPreferences() { 3755 checkThread(); 3756 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3757 } 3758 3759 /** 3760 * Return the WebBackForwardList for this WebView. This contains the 3761 * back/forward list for use in querying each item in the history stack. 3762 * This is a copy of the private WebBackForwardList so it contains only a 3763 * snapshot of the current state. Multiple calls to this method may return 3764 * different objects. The object returned from this method will not be 3765 * updated to reflect any new state. 3766 */ 3767 public WebBackForwardList copyBackForwardList() { 3768 checkThread(); 3769 return mCallbackProxy.getBackForwardList().clone(); 3770 } 3771 3772 /* 3773 * Highlight and scroll to the next occurance of String in findAll. 3774 * Wraps the page infinitely, and scrolls. Must be called after 3775 * calling findAll. 3776 * 3777 * @param forward Direction to search. 3778 */ 3779 public void findNext(boolean forward) { 3780 checkThread(); 3781 if (0 == mNativeClass) return; // client isn't initialized 3782 mWebViewCore.sendMessage(EventHub.FIND_NEXT, forward ? 1 : 0); 3783 } 3784 3785 /* 3786 * Find all instances of find on the page and highlight them. 3787 * @param find String to find. 3788 * @return int The number of occurances of the String "find" 3789 * that were found. 3790 */ 3791 public int findAll(String find) { 3792 return findAllBody(find, false); 3793 } 3794 3795 /** 3796 * @hide 3797 */ 3798 public void findAllAsync(String find) { 3799 findAllBody(find, true); 3800 } 3801 3802 private int findAllBody(String find, boolean isAsync) { 3803 checkThread(); 3804 if (0 == mNativeClass) return 0; // client isn't initialized 3805 mLastFind = find; 3806 mWebViewCore.removeMessages(EventHub.FIND_ALL); 3807 WebViewCore.FindAllRequest request = new 3808 WebViewCore.FindAllRequest(find); 3809 if (isAsync) { 3810 mWebViewCore.sendMessage(EventHub.FIND_ALL, request); 3811 return 0; // no need to wait for response 3812 } 3813 synchronized(request) { 3814 try { 3815 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.FIND_ALL, 3816 request); 3817 while (request.mMatchCount == -1) { 3818 request.wait(); 3819 } 3820 } 3821 catch (InterruptedException e) { 3822 return 0; 3823 } 3824 } 3825 return request.mMatchCount; 3826 } 3827 3828 /** 3829 * Start an ActionMode for finding text in this WebView. Only works if this 3830 * WebView is attached to the view system. 3831 * @param text If non-null, will be the initial text to search for. 3832 * Otherwise, the last String searched for in this WebView will 3833 * be used to start. 3834 * @param showIme If true, show the IME, assuming the user will begin typing. 3835 * If false and text is non-null, perform a find all. 3836 * @return boolean True if the find dialog is shown, false otherwise. 3837 */ 3838 public boolean showFindDialog(String text, boolean showIme) { 3839 checkThread(); 3840 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3841 if (mWebView.getParent() == null || mWebView.startActionMode(callback) == null) { 3842 // Could not start the action mode, so end Find on page 3843 return false; 3844 } 3845 mCachedOverlappingActionModeHeight = -1; 3846 mFindCallback = callback; 3847 setFindIsUp(true); 3848 mFindCallback.setWebView(this); 3849 if (showIme) { 3850 mFindCallback.showSoftInput(); 3851 } else if (text != null) { 3852 mFindCallback.setText(text); 3853 mFindCallback.findAll(); 3854 return true; 3855 } 3856 if (text == null) { 3857 text = mLastFind; 3858 } 3859 if (text != null) { 3860 mFindCallback.setText(text); 3861 mFindCallback.findAll(); 3862 } 3863 return true; 3864 } 3865 3866 /** 3867 * Keep track of the find callback so that we can remove its titlebar if 3868 * necessary. 3869 */ 3870 private FindActionModeCallback mFindCallback; 3871 3872 /** 3873 * Toggle whether the find dialog is showing, for both native and Java. 3874 */ 3875 private void setFindIsUp(boolean isUp) { 3876 mFindIsUp = isUp; 3877 } 3878 3879 // Used to know whether the find dialog is open. Affects whether 3880 // or not we draw the highlights for matches. 3881 private boolean mFindIsUp; 3882 3883 // Keep track of the last string sent, so we can search again when find is 3884 // reopened. 3885 private String mLastFind; 3886 3887 /** 3888 * Return the first substring consisting of the address of a physical 3889 * location. Currently, only addresses in the United States are detected, 3890 * and consist of: 3891 * - a house number 3892 * - a street name 3893 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3894 * - a city name 3895 * - a state or territory, either spelled out or two-letter abbr. 3896 * - an optional 5 digit or 9 digit zip code. 3897 * 3898 * All names must be correctly capitalized, and the zip code, if present, 3899 * must be valid for the state. The street type must be a standard USPS 3900 * spelling or abbreviation. The state or territory must also be spelled 3901 * or abbreviated using USPS standards. The house number may not exceed 3902 * five digits. 3903 * @param addr The string to search for addresses. 3904 * 3905 * @return the address, or if no address is found, return null. 3906 */ 3907 public static String findAddress(String addr) { 3908 checkThread(); 3909 return findAddress(addr, false); 3910 } 3911 3912 /** 3913 * @hide 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 * Names are optionally 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 * @param caseInsensitive addr Set to true to make search ignore case. 3931 * 3932 * @return the address, or if no address is found, return null. 3933 */ 3934 public static String findAddress(String addr, boolean caseInsensitive) { 3935 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3936 } 3937 3938 /* 3939 * Clear the highlighting surrounding text matches created by findAll. 3940 */ 3941 public void clearMatches() { 3942 checkThread(); 3943 if (mNativeClass == 0) 3944 return; 3945 mWebViewCore.removeMessages(EventHub.FIND_ALL); 3946 mWebViewCore.sendMessage(EventHub.FIND_ALL, null); 3947 } 3948 3949 3950 /** 3951 * Called when the find ActionMode ends. 3952 */ 3953 void notifyFindDialogDismissed() { 3954 mFindCallback = null; 3955 mCachedOverlappingActionModeHeight = -1; 3956 if (mWebViewCore == null) { 3957 return; 3958 } 3959 clearMatches(); 3960 setFindIsUp(false); 3961 // Now that the dialog has been removed, ensure that we scroll to a 3962 // location that is not beyond the end of the page. 3963 pinScrollTo(getScrollX(), getScrollY(), false, 0); 3964 invalidate(); 3965 } 3966 3967 /** 3968 * Query the document to see if it contains any image references. The 3969 * message object will be dispatched with arg1 being set to 1 if images 3970 * were found and 0 if the document does not reference any images. 3971 * @param response The message that will be dispatched with the result. 3972 */ 3973 public void documentHasImages(Message response) { 3974 checkThread(); 3975 if (response == null) { 3976 return; 3977 } 3978 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3979 } 3980 3981 /** 3982 * Request the scroller to abort any ongoing animation 3983 * 3984 * @hide 3985 */ 3986 public void stopScroll() { 3987 mScroller.forceFinished(true); 3988 mLastVelocity = 0; 3989 } 3990 3991 @Override 3992 public void computeScroll() { 3993 if (mScroller.computeScrollOffset()) { 3994 int oldX = getScrollX(); 3995 int oldY = getScrollY(); 3996 int x = mScroller.getCurrX(); 3997 int y = mScroller.getCurrY(); 3998 invalidate(); // So we draw again 3999 4000 if (!mScroller.isFinished()) { 4001 int rangeX = computeMaxScrollX(); 4002 int rangeY = computeMaxScrollY(); 4003 int overflingDistance = mOverflingDistance; 4004 4005 // Use the layer's scroll data if needed. 4006 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 4007 oldX = mScrollingLayerRect.left; 4008 oldY = mScrollingLayerRect.top; 4009 rangeX = mScrollingLayerRect.right; 4010 rangeY = mScrollingLayerRect.bottom; 4011 // No overscrolling for layers. 4012 overflingDistance = 0; 4013 } 4014 4015 mWebViewPrivate.overScrollBy(x - oldX, y - oldY, oldX, oldY, 4016 rangeX, rangeY, 4017 overflingDistance, overflingDistance, false); 4018 4019 if (mOverScrollGlow != null) { 4020 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 4021 } 4022 } else { 4023 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 4024 setScrollXRaw(x); 4025 setScrollYRaw(y); 4026 } else { 4027 // Update the layer position instead of WebView. 4028 scrollLayerTo(x, y); 4029 } 4030 abortAnimation(); 4031 nativeSetIsScrolling(false); 4032 if (!mBlockWebkitViewMessages) { 4033 WebViewCore.resumePriority(); 4034 if (!mSelectingText) { 4035 WebViewCore.resumeUpdatePicture(mWebViewCore); 4036 } 4037 } 4038 if (oldX != getScrollX() || oldY != getScrollY()) { 4039 sendOurVisibleRect(); 4040 } 4041 } 4042 } else { 4043 mWebViewPrivate.super_computeScroll(); 4044 } 4045 } 4046 4047 private void scrollLayerTo(int x, int y) { 4048 if (x == mScrollingLayerRect.left && y == mScrollingLayerRect.top) { 4049 return; 4050 } 4051 if (mSelectingText) { 4052 int dx = mScrollingLayerRect.left - x; 4053 int dy = mScrollingLayerRect.top - y; 4054 if (mSelectCursorBaseLayerId == mCurrentScrollingLayerId) { 4055 mSelectCursorBase.offset(dx, dy); 4056 } 4057 if (mSelectCursorExtentLayerId == mCurrentScrollingLayerId) { 4058 mSelectCursorExtent.offset(dx, dy); 4059 } 4060 } 4061 nativeScrollLayer(mCurrentScrollingLayerId, x, y); 4062 mScrollingLayerRect.left = x; 4063 mScrollingLayerRect.top = y; 4064 mWebViewCore.sendMessage(WebViewCore.EventHub.SCROLL_LAYER, mCurrentScrollingLayerId, 4065 mScrollingLayerRect); 4066 mWebViewPrivate.onScrollChanged(getScrollX(), getScrollY(), getScrollX(), getScrollY()); 4067 invalidate(); 4068 } 4069 4070 private static int computeDuration(int dx, int dy) { 4071 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 4072 int duration = distance * 1000 / STD_SPEED; 4073 return Math.min(duration, MAX_DURATION); 4074 } 4075 4076 // helper to pin the scrollBy parameters (already in view coordinates) 4077 // returns true if the scroll was changed 4078 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 4079 return pinScrollTo(getScrollX() + dx, getScrollY() + dy, animate, animationDuration); 4080 } 4081 // helper to pin the scrollTo parameters (already in view coordinates) 4082 // returns true if the scroll was changed 4083 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 4084 x = pinLocX(x); 4085 y = pinLocY(y); 4086 int dx = x - getScrollX(); 4087 int dy = y - getScrollY(); 4088 4089 if ((dx | dy) == 0) { 4090 return false; 4091 } 4092 abortAnimation(); 4093 if (animate) { 4094 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 4095 mScroller.startScroll(getScrollX(), getScrollY(), dx, dy, 4096 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 4097 mWebViewPrivate.awakenScrollBars(mScroller.getDuration()); 4098 invalidate(); 4099 } else { 4100 mWebView.scrollTo(x, y); 4101 } 4102 return true; 4103 } 4104 4105 // Scale from content to view coordinates, and pin. 4106 // Also called by jni webview.cpp 4107 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 4108 if (mDrawHistory) { 4109 // disallow WebView to change the scroll position as History Picture 4110 // is used in the view system. 4111 // TODO: as we switchOutDrawHistory when trackball or navigation 4112 // keys are hit, this should be safe. Right? 4113 return false; 4114 } 4115 cx = contentToViewDimension(cx); 4116 cy = contentToViewDimension(cy); 4117 if (mHeightCanMeasure) { 4118 // move our visible rect according to scroll request 4119 if (cy != 0) { 4120 Rect tempRect = new Rect(); 4121 calcOurVisibleRect(tempRect); 4122 tempRect.offset(cx, cy); 4123 mWebView.requestRectangleOnScreen(tempRect); 4124 } 4125 // FIXME: We scroll horizontally no matter what because currently 4126 // ScrollView and ListView will not scroll horizontally. 4127 // FIXME: Why do we only scroll horizontally if there is no 4128 // vertical scroll? 4129// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 4130 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 4131 } else { 4132 return pinScrollBy(cx, cy, animate, 0); 4133 } 4134 } 4135 4136 /** 4137 * Called by CallbackProxy when the page starts loading. 4138 * @param url The URL of the page which has started loading. 4139 */ 4140 /* package */ void onPageStarted(String url) { 4141 // every time we start a new page, we want to reset the 4142 // WebView certificate: if the new site is secure, we 4143 // will reload it and get a new certificate set; 4144 // if the new site is not secure, the certificate must be 4145 // null, and that will be the case 4146 mWebView.setCertificate(null); 4147 4148 // reset the flag since we set to true in if need after 4149 // loading is see onPageFinished(Url) 4150 mAccessibilityScriptInjected = false; 4151 } 4152 4153 /** 4154 * Called by CallbackProxy when the page finishes loading. 4155 * @param url The URL of the page which has finished loading. 4156 */ 4157 /* package */ void onPageFinished(String url) { 4158 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 4159 // If the user is now on a different page, or has scrolled the page 4160 // past the point where the title bar is offscreen, ignore the 4161 // scroll request. 4162 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 4163 && getScrollX() == 0 && getScrollY() == 0) { 4164 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 4165 SLIDE_TITLE_DURATION); 4166 } 4167 mPageThatNeedsToSlideTitleBarOffScreen = null; 4168 } 4169 mZoomManager.onPageFinished(url); 4170 injectAccessibilityForUrl(url); 4171 } 4172 4173 /** 4174 * This method injects accessibility in the loaded document if accessibility 4175 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 4176 * If no URL specific script is found or JavaScript is disabled we fallback to 4177 * the default {@link AccessibilityInjector} implementation. 4178 * </p> 4179 * If the URL has the "axs" paramter set to 1 it has already done the 4180 * script injection so we do nothing. If the parameter is set to 0 4181 * the URL opts out accessibility script injection so we fall back to 4182 * the default {@link AccessibilityInjector}. 4183 * </p> 4184 * Note: If the user has not opted-in the accessibility script injection no scripts 4185 * are injected rather the default {@link AccessibilityInjector} implementation 4186 * is used. 4187 * 4188 * @param url The URL loaded by this {@link WebView}. 4189 */ 4190 private void injectAccessibilityForUrl(String url) { 4191 if (mWebViewCore == null) { 4192 return; 4193 } 4194 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 4195 4196 if (!accessibilityManager.isEnabled()) { 4197 // it is possible that accessibility was turned off between reloads 4198 ensureAccessibilityScriptInjectorInstance(false); 4199 return; 4200 } 4201 4202 if (!getSettings().getJavaScriptEnabled()) { 4203 // no JS so we fallback to the basic buil-in support 4204 ensureAccessibilityScriptInjectorInstance(true); 4205 return; 4206 } 4207 4208 // check the URL "axs" parameter to choose appropriate action 4209 int axsParameterValue = getAxsUrlParameterValue(url); 4210 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 4211 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 4212 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 4213 if (onDeviceScriptInjectionEnabled) { 4214 ensureAccessibilityScriptInjectorInstance(false); 4215 // neither script injected nor script injection opted out => we inject 4216 mWebView.loadUrl(getScreenReaderInjectingJs()); 4217 // TODO: Set this flag after successfull script injection. Maybe upon injection 4218 // the chooser should update the meta tag and we check it to declare success 4219 mAccessibilityScriptInjected = true; 4220 } else { 4221 // injection disabled so we fallback to the basic built-in support 4222 ensureAccessibilityScriptInjectorInstance(true); 4223 } 4224 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 4225 // injection opted out so we fallback to the basic buil-in support 4226 ensureAccessibilityScriptInjectorInstance(true); 4227 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 4228 ensureAccessibilityScriptInjectorInstance(false); 4229 // the URL provides accessibility but we still need to add our generic script 4230 mWebView.loadUrl(getScreenReaderInjectingJs()); 4231 } else { 4232 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 4233 } 4234 } 4235 4236 /** 4237 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 4238 * 4239 * @param present True to ensure an insance, false to ensure no instance. 4240 */ 4241 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 4242 if (present) { 4243 if (mAccessibilityInjector == null) { 4244 mAccessibilityInjector = new AccessibilityInjector(this); 4245 } 4246 } else { 4247 mAccessibilityInjector = null; 4248 } 4249 } 4250 4251 /** 4252 * Gets JavaScript that injects a screen-reader. 4253 * 4254 * @return The JavaScript snippet. 4255 */ 4256 private String getScreenReaderInjectingJs() { 4257 String screenReaderUrl = Settings.Secure.getString(mContext.getContentResolver(), 4258 Settings.Secure.ACCESSIBILITY_SCREEN_READER_URL); 4259 return String.format(ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE, screenReaderUrl); 4260 } 4261 4262 /** 4263 * Gets the "axs" URL parameter value. 4264 * 4265 * @param url A url to fetch the paramter from. 4266 * @return The parameter value if such, -1 otherwise. 4267 */ 4268 private int getAxsUrlParameterValue(String url) { 4269 if (mMatchAxsUrlParameterPattern == null) { 4270 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 4271 } 4272 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 4273 if (matcher.find()) { 4274 String keyValuePair = url.substring(matcher.start(), matcher.end()); 4275 return Integer.parseInt(keyValuePair.split("=")[1]); 4276 } 4277 return -1; 4278 } 4279 4280 /** 4281 * The URL of a page that sent a message to scroll the title bar off screen. 4282 * 4283 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 4284 * title bar off the screen. Sometimes, the scroll position is set before 4285 * the page finishes loading. Rather than scrolling while the page is still 4286 * loading, keep track of the URL and new scroll position so we can perform 4287 * the scroll once the page finishes loading. 4288 */ 4289 private String mPageThatNeedsToSlideTitleBarOffScreen; 4290 4291 /** 4292 * The destination Y scroll position to be used when the page finishes 4293 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 4294 */ 4295 private int mYDistanceToSlideTitleOffScreen; 4296 4297 // scale from content to view coordinates, and pin 4298 // return true if pin caused the final x/y different than the request cx/cy, 4299 // and a future scroll may reach the request cx/cy after our size has 4300 // changed 4301 // return false if the view scroll to the exact position as it is requested, 4302 // where negative numbers are taken to mean 0 4303 private boolean setContentScrollTo(int cx, int cy) { 4304 if (mDrawHistory) { 4305 // disallow WebView to change the scroll position as History Picture 4306 // is used in the view system. 4307 // One known case where this is called is that WebCore tries to 4308 // restore the scroll position. As history Picture already uses the 4309 // saved scroll position, it is ok to skip this. 4310 return false; 4311 } 4312 int vx; 4313 int vy; 4314 if ((cx | cy) == 0) { 4315 // If the page is being scrolled to (0,0), do not add in the title 4316 // bar's height, and simply scroll to (0,0). (The only other work 4317 // in contentToView_ is to multiply, so this would not change 0.) 4318 vx = 0; 4319 vy = 0; 4320 } else { 4321 vx = contentToViewX(cx); 4322 vy = contentToViewY(cy); 4323 } 4324// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 4325// vx + " " + vy + "]"); 4326 // Some mobile sites attempt to scroll the title bar off the page by 4327 // scrolling to (0,1). If we are at the top left corner of the 4328 // page, assume this is an attempt to scroll off the title bar, and 4329 // animate the title bar off screen slowly enough that the user can see 4330 // it. 4331 if (cx == 0 && cy == 1 && getScrollX() == 0 && getScrollY() == 0 4332 && mTitleBar != null) { 4333 // FIXME: 100 should be defined somewhere as our max progress. 4334 if (getProgress() < 100) { 4335 // Wait to scroll the title bar off screen until the page has 4336 // finished loading. Keep track of the URL and the destination 4337 // Y position 4338 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 4339 mYDistanceToSlideTitleOffScreen = vy; 4340 } else { 4341 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 4342 } 4343 // Since we are animating, we have not yet reached the desired 4344 // scroll position. Do not return true to request another attempt 4345 return false; 4346 } 4347 pinScrollTo(vx, vy, false, 0); 4348 // If the request was to scroll to a negative coordinate, treat it as if 4349 // it was a request to scroll to 0 4350 if ((getScrollX() != vx && cx >= 0) || (getScrollY() != vy && cy >= 0)) { 4351 return true; 4352 } else { 4353 return false; 4354 } 4355 } 4356 4357 // scale from content to view coordinates, and pin 4358 private void spawnContentScrollTo(int cx, int cy) { 4359 if (mDrawHistory) { 4360 // disallow WebView to change the scroll position as History Picture 4361 // is used in the view system. 4362 return; 4363 } 4364 int vx = contentToViewX(cx); 4365 int vy = contentToViewY(cy); 4366 pinScrollTo(vx, vy, true, 0); 4367 } 4368 4369 /** 4370 * These are from webkit, and are in content coordinate system (unzoomed) 4371 */ 4372 private void contentSizeChanged(boolean updateLayout) { 4373 // suppress 0,0 since we usually see real dimensions soon after 4374 // this avoids drawing the prev content in a funny place. If we find a 4375 // way to consolidate these notifications, this check may become 4376 // obsolete 4377 if ((mContentWidth | mContentHeight) == 0) { 4378 return; 4379 } 4380 4381 if (mHeightCanMeasure) { 4382 if (mWebView.getMeasuredHeight() != contentToViewDimension(mContentHeight) 4383 || updateLayout) { 4384 mWebView.requestLayout(); 4385 } 4386 } else if (mWidthCanMeasure) { 4387 if (mWebView.getMeasuredWidth() != contentToViewDimension(mContentWidth) 4388 || updateLayout) { 4389 mWebView.requestLayout(); 4390 } 4391 } else { 4392 // If we don't request a layout, try to send our view size to the 4393 // native side to ensure that WebCore has the correct dimensions. 4394 sendViewSizeZoom(false); 4395 } 4396 } 4397 4398 /** 4399 * Set the WebViewClient that will receive various notifications and 4400 * requests. This will replace the current handler. 4401 * @param client An implementation of WebViewClient. 4402 */ 4403 public void setWebViewClient(WebViewClient client) { 4404 checkThread(); 4405 mCallbackProxy.setWebViewClient(client); 4406 } 4407 4408 /** 4409 * Gets the WebViewClient 4410 * @return the current WebViewClient instance. 4411 * 4412 * @hide This is an implementation detail. 4413 */ 4414 public WebViewClient getWebViewClient() { 4415 return mCallbackProxy.getWebViewClient(); 4416 } 4417 4418 /** 4419 * Register the interface to be used when content can not be handled by 4420 * the rendering engine, and should be downloaded instead. This will replace 4421 * the current handler. 4422 * @param listener An implementation of DownloadListener. 4423 */ 4424 public void setDownloadListener(DownloadListener listener) { 4425 checkThread(); 4426 mCallbackProxy.setDownloadListener(listener); 4427 } 4428 4429 /** 4430 * Set the chrome handler. This is an implementation of WebChromeClient for 4431 * use in handling JavaScript dialogs, favicons, titles, and the progress. 4432 * This will replace the current handler. 4433 * @param client An implementation of WebChromeClient. 4434 */ 4435 public void setWebChromeClient(WebChromeClient client) { 4436 checkThread(); 4437 mCallbackProxy.setWebChromeClient(client); 4438 } 4439 4440 /** 4441 * Gets the chrome handler. 4442 * @return the current WebChromeClient instance. 4443 * 4444 * @hide This is an implementation detail. 4445 */ 4446 public WebChromeClient getWebChromeClient() { 4447 return mCallbackProxy.getWebChromeClient(); 4448 } 4449 4450 /** 4451 * Set the back/forward list client. This is an implementation of 4452 * WebBackForwardListClient for handling new items and changes in the 4453 * history index. 4454 * @param client An implementation of WebBackForwardListClient. 4455 * {@hide} 4456 */ 4457 public void setWebBackForwardListClient(WebBackForwardListClient client) { 4458 mCallbackProxy.setWebBackForwardListClient(client); 4459 } 4460 4461 /** 4462 * Gets the WebBackForwardListClient. 4463 * {@hide} 4464 */ 4465 public WebBackForwardListClient getWebBackForwardListClient() { 4466 return mCallbackProxy.getWebBackForwardListClient(); 4467 } 4468 4469 /** 4470 * Set the Picture listener. This is an interface used to receive 4471 * notifications of a new Picture. 4472 * @param listener An implementation of WebView.PictureListener. 4473 * @deprecated This method is now obsolete. 4474 */ 4475 @Deprecated 4476 public void setPictureListener(PictureListener listener) { 4477 checkThread(); 4478 mPictureListener = listener; 4479 } 4480 4481 /** 4482 * {@hide} 4483 */ 4484 /* FIXME: Debug only! Remove for SDK! */ 4485 public void externalRepresentation(Message callback) { 4486 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 4487 } 4488 4489 /** 4490 * {@hide} 4491 */ 4492 /* FIXME: Debug only! Remove for SDK! */ 4493 public void documentAsText(Message callback) { 4494 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 4495 } 4496 4497 /** 4498 * This method injects the supplied Java object into the WebView. The 4499 * object is injected into the JavaScript context of the main frame, using 4500 * the supplied name. This allows the Java object to be accessed from 4501 * JavaScript. Note that that injected objects will not appear in 4502 * JavaScript until the page is next (re)loaded. For example: 4503 * <pre> webView.addJavascriptInterface(new Object(), "injectedObject"); 4504 * webView.loadData("<!DOCTYPE html><title></title>", "text/html", null); 4505 * webView.loadUrl("javascript:alert(injectedObject.toString())");</pre> 4506 * <p><strong>IMPORTANT:</strong> 4507 * <ul> 4508 * <li> addJavascriptInterface() can be used to allow JavaScript to control 4509 * the host application. This is a powerful feature, but also presents a 4510 * security risk. Use of this method in a WebView containing untrusted 4511 * content could allow an attacker to manipulate the host application in 4512 * unintended ways, executing Java code with the permissions of the host 4513 * application. Use extreme care when using this method in a WebView which 4514 * could contain untrusted content. 4515 * <li> JavaScript interacts with Java object on a private, background 4516 * thread of the WebView. Care is therefore required to maintain thread 4517 * safety.</li> 4518 * </ul></p> 4519 * @param object The Java object to inject into the WebView's JavaScript 4520 * context. Null values are ignored. 4521 * @param name The name used to expose the instance in JavaScript. 4522 */ 4523 public void addJavascriptInterface(Object object, String name) { 4524 checkThread(); 4525 if (object == null) { 4526 return; 4527 } 4528 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4529 arg.mObject = object; 4530 arg.mInterfaceName = name; 4531 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 4532 } 4533 4534 /** 4535 * Removes a previously added JavaScript interface with the given name. 4536 * @param interfaceName The name of the interface to remove. 4537 */ 4538 public void removeJavascriptInterface(String interfaceName) { 4539 checkThread(); 4540 if (mWebViewCore != null) { 4541 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4542 arg.mInterfaceName = interfaceName; 4543 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 4544 } 4545 } 4546 4547 /** 4548 * Return the WebSettings object used to control the settings for this 4549 * WebView. 4550 * @return A WebSettings object that can be used to control this WebView's 4551 * settings. 4552 */ 4553 public WebSettingsClassic getSettings() { 4554 checkThread(); 4555 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4556 } 4557 4558 /** 4559 * Return the list of currently loaded plugins. 4560 * @return The list of currently loaded plugins. 4561 * 4562 * @hide 4563 * @deprecated This was used for Gears, which has been deprecated. 4564 */ 4565 @Deprecated 4566 public static synchronized PluginList getPluginList() { 4567 checkThread(); 4568 return new PluginList(); 4569 } 4570 4571 /** 4572 * @hide 4573 * @deprecated This was used for Gears, which has been deprecated. 4574 */ 4575 @Deprecated 4576 public void refreshPlugins(boolean reloadOpenPages) { 4577 checkThread(); 4578 } 4579 4580 //------------------------------------------------------------------------- 4581 // Override View methods 4582 //------------------------------------------------------------------------- 4583 4584 @Override 4585 protected void finalize() throws Throwable { 4586 try { 4587 if (mNativeClass != 0) { 4588 mPrivateHandler.post(new Runnable() { 4589 @Override 4590 public void run() { 4591 destroy(); 4592 } 4593 }); 4594 } 4595 } finally { 4596 super.finalize(); 4597 } 4598 } 4599 4600 @Override 4601 public boolean drawChild(Canvas canvas, View child, long drawingTime) { 4602 if (child == mTitleBar) { 4603 // When drawing the title bar, move it horizontally to always show 4604 // at the top of the WebView. 4605 mTitleBar.offsetLeftAndRight(getScrollX() - mTitleBar.getLeft()); 4606 int newTop = 0; 4607 if (mTitleGravity == Gravity.NO_GRAVITY) { 4608 newTop = Math.min(0, getScrollY()); 4609 } else if (mTitleGravity == Gravity.TOP) { 4610 newTop = getScrollY(); 4611 } 4612 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 4613 mTitleBar.setTop(newTop); 4614 } 4615 return false; // We never call invalidate(), so unconditionally returning false. 4616 } 4617 4618 private void drawContent(Canvas canvas) { 4619 if (mDrawHistory) { 4620 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4621 canvas.drawPicture(mHistoryPicture); 4622 return; 4623 } 4624 if (mNativeClass == 0) return; 4625 4626 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4627 boolean animateScroll = ((!mScroller.isFinished() 4628 || mVelocityTracker != null) 4629 && (mTouchMode != TOUCH_DRAG_MODE || 4630 mHeldMotionless != MOTIONLESS_TRUE)) 4631 || mDeferTouchMode == TOUCH_DRAG_MODE; 4632 if (mTouchMode == TOUCH_DRAG_MODE) { 4633 if (mHeldMotionless == MOTIONLESS_PENDING) { 4634 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4635 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4636 mHeldMotionless = MOTIONLESS_FALSE; 4637 } 4638 if (mHeldMotionless == MOTIONLESS_FALSE) { 4639 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4640 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4641 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4642 .obtainMessage(AWAKEN_SCROLL_BARS), 4643 ViewConfiguration.getScrollDefaultDelay()); 4644 mHeldMotionless = MOTIONLESS_PENDING; 4645 } 4646 } 4647 int saveCount = canvas.save(); 4648 if (animateZoom) { 4649 mZoomManager.animateZoom(canvas); 4650 } else if (!canvas.isHardwareAccelerated()) { 4651 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4652 } 4653 4654 boolean UIAnimationsRunning = false; 4655 // Currently for each draw we compute the animation values; 4656 // We may in the future decide to do that independently. 4657 if (mNativeClass != 0 && !canvas.isHardwareAccelerated() 4658 && nativeEvaluateLayersAnimations(mNativeClass)) { 4659 UIAnimationsRunning = true; 4660 // If we have unfinished (or unstarted) animations, 4661 // we ask for a repaint. We only need to do this in software 4662 // rendering (with hardware rendering we already have a different 4663 // method of requesting a repaint) 4664 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 4665 invalidate(); 4666 } 4667 4668 // decide which adornments to draw 4669 int extras = DRAW_EXTRAS_NONE; 4670 if (!mFindIsUp && mSelectingText) { 4671 extras = DRAW_EXTRAS_SELECTION; 4672 } 4673 4674 calcOurContentVisibleRectF(mVisibleContentRect); 4675 if (canvas.isHardwareAccelerated()) { 4676 Rect glRectViewport = mGLViewportEmpty ? null : mGLRectViewport; 4677 Rect viewRectViewport = mGLViewportEmpty ? null : mViewRectViewport; 4678 4679 int functor = nativeGetDrawGLFunction(mNativeClass, glRectViewport, 4680 viewRectViewport, mVisibleContentRect, getScale(), extras); 4681 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4682 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 4683 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 4684 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 4685 } 4686 4687 } else { 4688 DrawFilter df = null; 4689 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4690 df = mZoomFilter; 4691 } else if (animateScroll) { 4692 df = mScrollFilter; 4693 } 4694 canvas.setDrawFilter(df); 4695 // XXX: Revisit splitting content. Right now it causes a 4696 // synchronization problem with layers. 4697 int content = nativeDraw(canvas, mVisibleContentRect, mBackgroundColor, 4698 extras, false); 4699 canvas.setDrawFilter(null); 4700 if (!mBlockWebkitViewMessages && content != 0) { 4701 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4702 } 4703 } 4704 4705 canvas.restoreToCount(saveCount); 4706 if (mSelectingText) { 4707 drawTextSelectionHandles(canvas); 4708 } 4709 4710 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4711 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4712 mTouchMode = TOUCH_SHORTPRESS_MODE; 4713 } 4714 } 4715 } 4716 4717 /** 4718 * Draw the background when beyond bounds 4719 * @param canvas Canvas to draw into 4720 */ 4721 private void drawOverScrollBackground(Canvas canvas) { 4722 if (mOverScrollBackground == null) { 4723 mOverScrollBackground = new Paint(); 4724 Bitmap bm = BitmapFactory.decodeResource( 4725 mContext.getResources(), 4726 com.android.internal.R.drawable.status_bar_background); 4727 mOverScrollBackground.setShader(new BitmapShader(bm, 4728 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4729 mOverScrollBorder = new Paint(); 4730 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4731 mOverScrollBorder.setStrokeWidth(0); 4732 mOverScrollBorder.setColor(0xffbbbbbb); 4733 } 4734 4735 int top = 0; 4736 int right = computeRealHorizontalScrollRange(); 4737 int bottom = top + computeRealVerticalScrollRange(); 4738 // first draw the background and anchor to the top of the view 4739 canvas.save(); 4740 canvas.translate(getScrollX(), getScrollY()); 4741 canvas.clipRect(-getScrollX(), top - getScrollY(), right - getScrollX(), bottom 4742 - getScrollY(), Region.Op.DIFFERENCE); 4743 canvas.drawPaint(mOverScrollBackground); 4744 canvas.restore(); 4745 // then draw the border 4746 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4747 // next clip the region for the content 4748 canvas.clipRect(0, top, right, bottom); 4749 } 4750 4751 @Override 4752 public void onDraw(Canvas canvas) { 4753 if (inFullScreenMode()) { 4754 return; // no need to draw anything if we aren't visible. 4755 } 4756 // if mNativeClass is 0, the WebView is either destroyed or not 4757 // initialized. In either case, just draw the background color and return 4758 if (mNativeClass == 0) { 4759 canvas.drawColor(mBackgroundColor); 4760 return; 4761 } 4762 4763 // if both mContentWidth and mContentHeight are 0, it means there is no 4764 // valid Picture passed to WebView yet. This can happen when WebView 4765 // just starts. Draw the background and return. 4766 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4767 canvas.drawColor(mBackgroundColor); 4768 return; 4769 } 4770 4771 if (canvas.isHardwareAccelerated()) { 4772 mZoomManager.setHardwareAccelerated(); 4773 } else { 4774 mWebViewCore.resumeWebKitDraw(); 4775 } 4776 4777 int saveCount = canvas.save(); 4778 if (mInOverScrollMode && !getSettings() 4779 .getUseWebViewBackgroundForOverscrollBackground()) { 4780 drawOverScrollBackground(canvas); 4781 } 4782 if (mTitleBar != null) { 4783 canvas.translate(0, getTitleHeight()); 4784 } 4785 drawContent(canvas); 4786 canvas.restoreToCount(saveCount); 4787 4788 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4789 invalidate(); 4790 } 4791 mWebViewCore.signalRepaintDone(); 4792 4793 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4794 invalidate(); 4795 } 4796 4797 if (mFocusTransition != null) { 4798 mFocusTransition.draw(canvas); 4799 } else if (shouldDrawHighlightRect()) { 4800 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4801 Rect r = new Rect(); 4802 while (iter.next(r)) { 4803 canvas.drawRect(r, mTouchHightlightPaint); 4804 } 4805 } 4806 if (DEBUG_TOUCH_HIGHLIGHT) { 4807 if (getSettings().getNavDump()) { 4808 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4809 if (mTouchCrossHairColor == null) { 4810 mTouchCrossHairColor = new Paint(); 4811 mTouchCrossHairColor.setColor(Color.RED); 4812 } 4813 canvas.drawLine(mTouchHighlightX - mNavSlop, 4814 mTouchHighlightY - mNavSlop, mTouchHighlightX 4815 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4816 + 1, mTouchCrossHairColor); 4817 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4818 mTouchHighlightY - mNavSlop, mTouchHighlightX 4819 - mNavSlop, 4820 mTouchHighlightY + mNavSlop + 1, 4821 mTouchCrossHairColor); 4822 } 4823 } 4824 } 4825 } 4826 4827 private void removeTouchHighlight() { 4828 mWebViewCore.removeMessages(EventHub.HIT_TEST); 4829 mPrivateHandler.removeMessages(HIT_TEST_RESULT); 4830 setTouchHighlightRects(null); 4831 } 4832 4833 @Override 4834 public void setLayoutParams(ViewGroup.LayoutParams params) { 4835 if (params.height == AbsoluteLayout.LayoutParams.WRAP_CONTENT) { 4836 mWrapContent = true; 4837 } 4838 mWebViewPrivate.super_setLayoutParams(params); 4839 } 4840 4841 @Override 4842 public boolean performLongClick() { 4843 // performLongClick() is the result of a delayed message. If we switch 4844 // to windows overview, the WebView will be temporarily removed from the 4845 // view system. In that case, do nothing. 4846 if (mWebView.getParent() == null) return false; 4847 4848 // A multi-finger gesture can look like a long press; make sure we don't take 4849 // long press actions if we're scaling. 4850 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4851 if (detector != null && detector.isInProgress()) { 4852 return false; 4853 } 4854 4855 if (mSelectingText) return false; // long click does nothing on selection 4856 /* if long click brings up a context menu, the super function 4857 * returns true and we're done. Otherwise, nothing happened when 4858 * the user clicked. */ 4859 if (mWebViewPrivate.super_performLongClick()) { 4860 return true; 4861 } 4862 /* In the case where the application hasn't already handled the long 4863 * click action, look for a word under the click. If one is found, 4864 * animate the text selection into view. 4865 * FIXME: no animation code yet */ 4866 final boolean isSelecting = selectText(); 4867 if (isSelecting) { 4868 mWebView.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4869 } else if (focusCandidateIsEditableText()) { 4870 mSelectCallback = new SelectActionModeCallback(); 4871 mSelectCallback.setWebView(this); 4872 mSelectCallback.setTextSelected(false); 4873 mWebView.startActionMode(mSelectCallback); 4874 } 4875 return isSelecting; 4876 } 4877 4878 /** 4879 * Select the word at the last click point. 4880 * 4881 * @hide This is an implementation detail. 4882 */ 4883 public boolean selectText() { 4884 int x = viewToContentX(mLastTouchX + getScrollX()); 4885 int y = viewToContentY(mLastTouchY + getScrollY()); 4886 return selectText(x, y); 4887 } 4888 4889 /** 4890 * Select the word at the indicated content coordinates. 4891 */ 4892 boolean selectText(int x, int y) { 4893 mWebViewCore.sendMessage(EventHub.SELECT_WORD_AT, x, y); 4894 return true; 4895 } 4896 4897 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4898 4899 @Override 4900 public void onConfigurationChanged(Configuration newConfig) { 4901 mCachedOverlappingActionModeHeight = -1; 4902 if (mSelectingText && mOrientation != newConfig.orientation) { 4903 selectionDone(); 4904 } 4905 mOrientation = newConfig.orientation; 4906 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 4907 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4908 } 4909 } 4910 4911 /** 4912 * Keep track of the Callback so we can end its ActionMode or remove its 4913 * titlebar. 4914 */ 4915 private SelectActionModeCallback mSelectCallback; 4916 4917 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4918 boolean isPictureAfterFirstLayout) { 4919 if (mNativeClass == 0) 4920 return; 4921 boolean queueFull; 4922 queueFull = nativeSetBaseLayer(mNativeClass, layer, invalRegion, 4923 showVisualIndicator, isPictureAfterFirstLayout); 4924 4925 if (layer == 0 || isPictureAfterFirstLayout) { 4926 mWebViewCore.resumeWebKitDraw(); 4927 } else if (queueFull) { 4928 // temporarily disable webkit draw throttling 4929 // TODO: re-enable 4930 // mWebViewCore.pauseWebKitDraw(); 4931 } 4932 4933 if (mHTML5VideoViewProxy != null) { 4934 mHTML5VideoViewProxy.setBaseLayer(layer); 4935 } 4936 } 4937 4938 int getBaseLayer() { 4939 if (mNativeClass == 0) { 4940 return 0; 4941 } 4942 return nativeGetBaseLayer(); 4943 } 4944 4945 private void onZoomAnimationStart() { 4946 } 4947 4948 private void onZoomAnimationEnd() { 4949 } 4950 4951 void onFixedLengthZoomAnimationStart() { 4952 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4953 onZoomAnimationStart(); 4954 } 4955 4956 void onFixedLengthZoomAnimationEnd() { 4957 if (!mBlockWebkitViewMessages && !mSelectingText) { 4958 WebViewCore.resumeUpdatePicture(mWebViewCore); 4959 } 4960 onZoomAnimationEnd(); 4961 } 4962 4963 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4964 Paint.DITHER_FLAG | 4965 Paint.SUBPIXEL_TEXT_FLAG; 4966 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4967 Paint.DITHER_FLAG; 4968 4969 private final DrawFilter mZoomFilter = 4970 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4971 // If we need to trade better quality for speed, set mScrollFilter to null 4972 private final DrawFilter mScrollFilter = 4973 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4974 4975 private void ensureSelectionHandles() { 4976 if (mSelectHandleCenter == null) { 4977 mSelectHandleCenter = mContext.getResources().getDrawable( 4978 com.android.internal.R.drawable.text_select_handle_middle); 4979 mSelectHandleLeft = mContext.getResources().getDrawable( 4980 com.android.internal.R.drawable.text_select_handle_left); 4981 mSelectHandleRight = mContext.getResources().getDrawable( 4982 com.android.internal.R.drawable.text_select_handle_right); 4983 } 4984 } 4985 4986 private void drawTextSelectionHandles(Canvas canvas) { 4987 ensureSelectionHandles(); 4988 int[] handles = new int[4]; 4989 getSelectionHandles(handles); 4990 int start_x = contentToViewDimension(handles[0]); 4991 int start_y = contentToViewDimension(handles[1]); 4992 int end_x = contentToViewDimension(handles[2]); 4993 int end_y = contentToViewDimension(handles[3]); 4994 4995 if (mIsCaretSelection) { 4996 // Caret handle is centered 4997 start_x -= (mSelectHandleCenter.getIntrinsicWidth() / 2); 4998 mSelectHandleCenter.setBounds(start_x, start_y, 4999 start_x + mSelectHandleCenter.getIntrinsicWidth(), 5000 start_y + mSelectHandleCenter.getIntrinsicHeight()); 5001 mSelectHandleCenter.draw(canvas); 5002 } else { 5003 // Magic formula copied from TextView 5004 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 5005 mSelectHandleLeft.setBounds(start_x, start_y, 5006 start_x + mSelectHandleLeft.getIntrinsicWidth(), 5007 start_y + mSelectHandleLeft.getIntrinsicHeight()); 5008 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 5009 mSelectHandleRight.setBounds(end_x, end_y, 5010 end_x + mSelectHandleRight.getIntrinsicWidth(), 5011 end_y + mSelectHandleRight.getIntrinsicHeight()); 5012 mSelectHandleLeft.draw(canvas); 5013 mSelectHandleRight.draw(canvas); 5014 } 5015 } 5016 5017 /** 5018 * Takes an int[4] array as an output param with the values being 5019 * startX, startY, endX, endY 5020 */ 5021 private void getSelectionHandles(int[] handles) { 5022 handles[0] = mSelectCursorBase.right; 5023 handles[1] = mSelectCursorBase.bottom - 5024 (mSelectCursorBase.height() / 4); 5025 handles[2] = mSelectCursorExtent.left; 5026 handles[3] = mSelectCursorExtent.bottom 5027 - (mSelectCursorExtent.height() / 4); 5028 if (!nativeIsBaseFirst(mNativeClass)) { 5029 int swap = handles[0]; 5030 handles[0] = handles[2]; 5031 handles[2] = swap; 5032 swap = handles[1]; 5033 handles[1] = handles[3]; 5034 handles[3] = swap; 5035 } 5036 } 5037 5038 // draw history 5039 private boolean mDrawHistory = false; 5040 private Picture mHistoryPicture = null; 5041 private int mHistoryWidth = 0; 5042 private int mHistoryHeight = 0; 5043 5044 // Only check the flag, can be called from WebCore thread 5045 boolean drawHistory() { 5046 return mDrawHistory; 5047 } 5048 5049 int getHistoryPictureWidth() { 5050 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 5051 } 5052 5053 // Should only be called in UI thread 5054 void switchOutDrawHistory() { 5055 if (null == mWebViewCore) return; // CallbackProxy may trigger this 5056 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 5057 mDrawHistory = false; 5058 mHistoryPicture = null; 5059 invalidate(); 5060 int oldScrollX = getScrollX(); 5061 int oldScrollY = getScrollY(); 5062 setScrollXRaw(pinLocX(getScrollX())); 5063 setScrollYRaw(pinLocY(getScrollY())); 5064 if (oldScrollX != getScrollX() || oldScrollY != getScrollY()) { 5065 mWebViewPrivate.onScrollChanged(getScrollX(), getScrollY(), oldScrollX, oldScrollY); 5066 } else { 5067 sendOurVisibleRect(); 5068 } 5069 } 5070 } 5071 5072 /** 5073 * Delete text from start to end in the focused textfield. If there is no 5074 * focus, or if start == end, silently fail. If start and end are out of 5075 * order, swap them. 5076 * @param start Beginning of selection to delete. 5077 * @param end End of selection to delete. 5078 */ 5079 /* package */ void deleteSelection(int start, int end) { 5080 mTextGeneration++; 5081 WebViewCore.TextSelectionData data 5082 = new WebViewCore.TextSelectionData(start, end, 0); 5083 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 5084 data); 5085 } 5086 5087 /** 5088 * Set the selection to (start, end) in the focused textfield. If start and 5089 * end are out of order, swap them. 5090 * @param start Beginning of selection. 5091 * @param end End of selection. 5092 */ 5093 /* package */ void setSelection(int start, int end) { 5094 if (mWebViewCore != null) { 5095 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 5096 } 5097 } 5098 5099 @Override 5100 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 5101 if (mInputConnection == null) { 5102 mInputConnection = new WebViewInputConnection(); 5103 } 5104 mInputConnection.setupEditorInfo(outAttrs); 5105 return mInputConnection; 5106 } 5107 5108 /** 5109 * Called in response to a message from webkit telling us that the soft 5110 * keyboard should be launched. 5111 */ 5112 private void displaySoftKeyboard(boolean isTextView) { 5113 InputMethodManager imm = (InputMethodManager) 5114 mContext.getSystemService(Context.INPUT_METHOD_SERVICE); 5115 5116 // bring it back to the default level scale so that user can enter text 5117 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 5118 if (zoom) { 5119 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 5120 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 5121 } 5122 // Used by plugins and contentEditable. 5123 // Also used if the navigation cache is out of date, and 5124 // does not recognize that a textfield is in focus. In that 5125 // case, use WebView as the targeted view. 5126 // see http://b/issue?id=2457459 5127 imm.showSoftInput(mWebView, 0); 5128 } 5129 5130 // Called by WebKit to instruct the UI to hide the keyboard 5131 private void hideSoftKeyboard() { 5132 InputMethodManager imm = InputMethodManager.peekInstance(); 5133 if (imm != null && (imm.isActive(mWebView))) { 5134 imm.hideSoftInputFromWindow(mWebView.getWindowToken(), 0); 5135 } 5136 } 5137 5138 /** 5139 * Dump the display tree to "/sdcard/displayTree.txt" 5140 * 5141 * @hide debug only 5142 */ 5143 public void dumpDisplayTree() { 5144 nativeDumpDisplayTree(getUrl()); 5145 } 5146 5147 /** 5148 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 5149 * "/sdcard/domTree.txt" 5150 * 5151 * @hide debug only 5152 */ 5153 public void dumpDomTree(boolean toFile) { 5154 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 5155 } 5156 5157 /** 5158 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 5159 * to "/sdcard/renderTree.txt" 5160 * 5161 * @hide debug only 5162 */ 5163 public void dumpRenderTree(boolean toFile) { 5164 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 5165 } 5166 5167 /** 5168 * Called by DRT on UI thread, need to proxy to WebCore thread. 5169 * 5170 * @hide debug only 5171 */ 5172 public void useMockDeviceOrientation() { 5173 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 5174 } 5175 5176 /** 5177 * Called by DRT on WebCore thread. 5178 * 5179 * @hide debug only 5180 */ 5181 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 5182 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 5183 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 5184 canProvideGamma, gamma); 5185 } 5186 5187 // This is used to determine long press with the center key. Does not 5188 // affect long press with the trackball/touch. 5189 private boolean mGotCenterDown = false; 5190 5191 @Override 5192 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 5193 if (mBlockWebkitViewMessages) { 5194 return false; 5195 } 5196 // send complex characters to webkit for use by JS and plugins 5197 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 5198 // pass the key to DOM 5199 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5200 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5201 // return true as DOM handles the key 5202 return true; 5203 } 5204 return false; 5205 } 5206 5207 private boolean isEnterActionKey(int keyCode) { 5208 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 5209 || keyCode == KeyEvent.KEYCODE_ENTER 5210 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 5211 } 5212 5213 @Override 5214 public boolean onKeyDown(int keyCode, KeyEvent event) { 5215 if (DebugFlags.WEB_VIEW) { 5216 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 5217 + "keyCode=" + keyCode 5218 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5219 } 5220 if (mIsCaretSelection) { 5221 selectionDone(); 5222 } 5223 if (mBlockWebkitViewMessages) { 5224 return false; 5225 } 5226 5227 // don't implement accelerator keys here; defer to host application 5228 if (event.isCtrlPressed()) { 5229 return false; 5230 } 5231 5232 if (mNativeClass == 0) { 5233 return false; 5234 } 5235 5236 // do this hack up front, so it always works, regardless of touch-mode 5237 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 5238 mAutoRedraw = !mAutoRedraw; 5239 if (mAutoRedraw) { 5240 invalidate(); 5241 } 5242 return true; 5243 } 5244 5245 // Bubble up the key event if 5246 // 1. it is a system key; or 5247 // 2. the host application wants to handle it; 5248 if (event.isSystem() 5249 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5250 return false; 5251 } 5252 5253 // accessibility support 5254 if (accessibilityScriptInjected()) { 5255 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5256 // if an accessibility script is injected we delegate to it the key handling. 5257 // this script is a screen reader which is a fully fledged solution for blind 5258 // users to navigate in and interact with web pages. 5259 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5260 return true; 5261 } else { 5262 // Clean up if accessibility was disabled after loading the current URL. 5263 mAccessibilityScriptInjected = false; 5264 } 5265 } else if (mAccessibilityInjector != null) { 5266 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5267 if (mAccessibilityInjector.onKeyEvent(event)) { 5268 // if an accessibility injector is present (no JavaScript enabled or the site 5269 // opts out injecting our JavaScript screen reader) we let it decide whether 5270 // to act on and consume the event. 5271 return true; 5272 } 5273 } else { 5274 // Clean up if accessibility was disabled after loading the current URL. 5275 mAccessibilityInjector = null; 5276 } 5277 } 5278 5279 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 5280 if (event.hasNoModifiers()) { 5281 pageUp(false); 5282 return true; 5283 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5284 pageUp(true); 5285 return true; 5286 } 5287 } 5288 5289 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 5290 if (event.hasNoModifiers()) { 5291 pageDown(false); 5292 return true; 5293 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5294 pageDown(true); 5295 return true; 5296 } 5297 } 5298 5299 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 5300 pageUp(true); 5301 return true; 5302 } 5303 5304 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 5305 pageDown(true); 5306 return true; 5307 } 5308 5309 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5310 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5311 switchOutDrawHistory(); 5312 } 5313 5314 if (isEnterActionKey(keyCode)) { 5315 switchOutDrawHistory(); 5316 if (event.getRepeatCount() == 0) { 5317 if (mSelectingText) { 5318 return true; // discard press if copy in progress 5319 } 5320 mGotCenterDown = true; 5321 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5322 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 5323 } 5324 } 5325 5326 if (getSettings().getNavDump()) { 5327 switch (keyCode) { 5328 case KeyEvent.KEYCODE_4: 5329 dumpDisplayTree(); 5330 break; 5331 case KeyEvent.KEYCODE_5: 5332 case KeyEvent.KEYCODE_6: 5333 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5334 break; 5335 case KeyEvent.KEYCODE_7: 5336 case KeyEvent.KEYCODE_8: 5337 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5338 break; 5339 } 5340 } 5341 5342 // pass the key to DOM 5343 sendKeyEvent(event); 5344 // return true as DOM handles the key 5345 return true; 5346 } 5347 5348 @Override 5349 public boolean onKeyUp(int keyCode, KeyEvent event) { 5350 if (DebugFlags.WEB_VIEW) { 5351 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5352 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5353 } 5354 if (mBlockWebkitViewMessages) { 5355 return false; 5356 } 5357 5358 if (mNativeClass == 0) { 5359 return false; 5360 } 5361 5362 // special CALL handling when cursor node's href is "tel:XXX" 5363 if (keyCode == KeyEvent.KEYCODE_CALL 5364 && mInitialHitTestResult != null 5365 && mInitialHitTestResult.getType() == HitTestResult.PHONE_TYPE) { 5366 String text = mInitialHitTestResult.getExtra(); 5367 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5368 mContext.startActivity(intent); 5369 return true; 5370 } 5371 5372 // Bubble up the key event if 5373 // 1. it is a system key; or 5374 // 2. the host application wants to handle it; 5375 if (event.isSystem() 5376 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5377 return false; 5378 } 5379 5380 // accessibility support 5381 if (accessibilityScriptInjected()) { 5382 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5383 // if an accessibility script is injected we delegate to it the key handling. 5384 // this script is a screen reader which is a fully fledged solution for blind 5385 // users to navigate in and interact with web pages. 5386 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5387 return true; 5388 } else { 5389 // Clean up if accessibility was disabled after loading the current URL. 5390 mAccessibilityScriptInjected = false; 5391 } 5392 } else if (mAccessibilityInjector != null) { 5393 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5394 if (mAccessibilityInjector.onKeyEvent(event)) { 5395 // if an accessibility injector is present (no JavaScript enabled or the site 5396 // opts out injecting our JavaScript screen reader) we let it decide whether to 5397 // act on and consume the event. 5398 return true; 5399 } 5400 } else { 5401 // Clean up if accessibility was disabled after loading the current URL. 5402 mAccessibilityInjector = null; 5403 } 5404 } 5405 5406 if (isEnterActionKey(keyCode)) { 5407 // remove the long press message first 5408 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5409 mGotCenterDown = false; 5410 5411 if (mSelectingText) { 5412 copySelection(); 5413 selectionDone(); 5414 return true; // discard press if copy in progress 5415 } 5416 } 5417 5418 // pass the key to DOM 5419 sendKeyEvent(event); 5420 // return true as DOM handles the key 5421 return true; 5422 } 5423 5424 private boolean startSelectActionMode() { 5425 mSelectCallback = new SelectActionModeCallback(); 5426 mSelectCallback.setTextSelected(!mIsCaretSelection); 5427 mSelectCallback.setWebView(this); 5428 if (mWebView.startActionMode(mSelectCallback) == null) { 5429 // There is no ActionMode, so do not allow the user to modify a 5430 // selection. 5431 selectionDone(); 5432 return false; 5433 } 5434 mWebView.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 5435 return true; 5436 } 5437 5438 private void showPasteWindow() { 5439 ClipboardManager cm = (ClipboardManager)(mContext 5440 .getSystemService(Context.CLIPBOARD_SERVICE)); 5441 if (cm.hasPrimaryClip()) { 5442 Rect cursorRect = contentToViewRect(mSelectCursorBase); 5443 int[] location = new int[2]; 5444 mWebView.getLocationInWindow(location); 5445 cursorRect.offset(location[0] - getScrollX(), location[1] - getScrollY()); 5446 if (mPasteWindow == null) { 5447 mPasteWindow = new PastePopupWindow(); 5448 } 5449 mPasteWindow.show(cursorRect, location[0], location[1]); 5450 } 5451 } 5452 5453 private void hidePasteButton() { 5454 if (mPasteWindow != null) { 5455 mPasteWindow.hide(); 5456 } 5457 } 5458 5459 private void syncSelectionCursors() { 5460 mSelectCursorBaseLayerId = 5461 nativeGetHandleLayerId(mNativeClass, HANDLE_ID_BASE, mSelectCursorBase); 5462 mSelectCursorExtentLayerId = 5463 nativeGetHandleLayerId(mNativeClass, HANDLE_ID_EXTENT, mSelectCursorExtent); 5464 } 5465 5466 private boolean setupWebkitSelect() { 5467 syncSelectionCursors(); 5468 if (mIsCaretSelection) { 5469 showPasteWindow(); 5470 } else if (!startSelectActionMode()) { 5471 selectionDone(); 5472 return false; 5473 } 5474 mSelectingText = true; 5475 mTouchMode = TOUCH_DRAG_MODE; 5476 return true; 5477 } 5478 5479 private void updateWebkitSelection() { 5480 int[] handles = null; 5481 if (mIsCaretSelection) { 5482 mSelectCursorExtent.set(mSelectCursorBase); 5483 } 5484 if (mSelectingText) { 5485 handles = new int[4]; 5486 handles[0] = mSelectCursorBase.centerX(); 5487 handles[1] = mSelectCursorBase.centerY(); 5488 handles[2] = mSelectCursorExtent.centerX(); 5489 handles[3] = mSelectCursorExtent.centerY(); 5490 } else { 5491 nativeSetTextSelection(mNativeClass, 0); 5492 } 5493 mWebViewCore.removeMessages(EventHub.SELECT_TEXT); 5494 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.SELECT_TEXT, handles); 5495 } 5496 5497 private void resetCaretTimer() { 5498 mPrivateHandler.removeMessages(CLEAR_CARET_HANDLE); 5499 if (!mSelectionStarted) { 5500 mPrivateHandler.sendEmptyMessageDelayed(CLEAR_CARET_HANDLE, 5501 CARET_HANDLE_STAMINA_MS); 5502 } 5503 } 5504 5505 /** 5506 * Use this method to put the WebView into text selection mode. 5507 * Do not rely on this functionality; it will be deprecated in the future. 5508 * @deprecated This method is now obsolete. 5509 */ 5510 @Deprecated 5511 public void emulateShiftHeld() { 5512 checkThread(); 5513 } 5514 5515 /** 5516 * Select all of the text in this WebView. 5517 * 5518 * @hide This is an implementation detail. 5519 */ 5520 public void selectAll() { 5521 mWebViewCore.sendMessage(EventHub.SELECT_ALL); 5522 } 5523 5524 /** 5525 * Called when the selection has been removed. 5526 */ 5527 void selectionDone() { 5528 if (mSelectingText) { 5529 hidePasteButton(); 5530 mSelectingText = false; 5531 // finish is idempotent, so this is fine even if selectionDone was 5532 // called by mSelectCallback.onDestroyActionMode 5533 if (mSelectCallback != null) { 5534 mSelectCallback.finish(); 5535 mSelectCallback = null; 5536 } 5537 if (!mIsCaretSelection) { 5538 updateWebkitSelection(); 5539 } 5540 mIsCaretSelection = false; 5541 invalidate(); // redraw without selection 5542 mAutoScrollX = 0; 5543 mAutoScrollY = 0; 5544 mSentAutoScrollMessage = false; 5545 } 5546 } 5547 5548 /** 5549 * Copy the selection to the clipboard 5550 * 5551 * @hide This is an implementation detail. 5552 */ 5553 public boolean copySelection() { 5554 boolean copiedSomething = false; 5555 String selection = getSelection(); 5556 if (selection != null && selection != "") { 5557 if (DebugFlags.WEB_VIEW) { 5558 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5559 } 5560 Toast.makeText(mContext 5561 , com.android.internal.R.string.text_copied 5562 , Toast.LENGTH_SHORT).show(); 5563 copiedSomething = true; 5564 ClipboardManager cm = (ClipboardManager)mContext 5565 .getSystemService(Context.CLIPBOARD_SERVICE); 5566 cm.setText(selection); 5567 int[] handles = new int[4]; 5568 getSelectionHandles(handles); 5569 mWebViewCore.sendMessage(EventHub.COPY_TEXT, handles); 5570 } 5571 invalidate(); // remove selection region and pointer 5572 return copiedSomething; 5573 } 5574 5575 /** 5576 * Cut the selected text into the clipboard 5577 * 5578 * @hide This is an implementation detail 5579 */ 5580 public void cutSelection() { 5581 copySelection(); 5582 int[] handles = new int[4]; 5583 getSelectionHandles(handles); 5584 mWebViewCore.sendMessage(EventHub.DELETE_TEXT, handles); 5585 } 5586 5587 /** 5588 * Paste text from the clipboard to the cursor position. 5589 * 5590 * @hide This is an implementation detail 5591 */ 5592 public void pasteFromClipboard() { 5593 ClipboardManager cm = (ClipboardManager)mContext 5594 .getSystemService(Context.CLIPBOARD_SERVICE); 5595 ClipData clipData = cm.getPrimaryClip(); 5596 if (clipData != null) { 5597 ClipData.Item clipItem = clipData.getItemAt(0); 5598 CharSequence pasteText = clipItem.getText(); 5599 if (mInputConnection != null) { 5600 mInputConnection.replaceSelection(pasteText); 5601 } 5602 } 5603 } 5604 5605 /** 5606 * @hide This is an implementation detail. 5607 */ 5608 public SearchBox getSearchBox() { 5609 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5610 return null; 5611 } 5612 return mWebViewCore.getBrowserFrame().getSearchBox(); 5613 } 5614 5615 /** 5616 * Returns the currently highlighted text as a string. 5617 */ 5618 String getSelection() { 5619 if (mNativeClass == 0) return ""; 5620 return nativeGetSelection(); 5621 } 5622 5623 @Override 5624 public void onAttachedToWindow() { 5625 if (mWebView.hasWindowFocus()) setActive(true); 5626 final ViewTreeObserver treeObserver = mWebView.getViewTreeObserver(); 5627 if (mGlobalLayoutListener == null) { 5628 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5629 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5630 } 5631 if (mScrollChangedListener == null) { 5632 mScrollChangedListener = new InnerScrollChangedListener(); 5633 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5634 } 5635 5636 addAccessibilityApisToJavaScript(); 5637 5638 mTouchEventQueue.reset(); 5639 } 5640 5641 @Override 5642 public void onDetachedFromWindow() { 5643 clearHelpers(); 5644 mZoomManager.dismissZoomPicker(); 5645 if (mWebView.hasWindowFocus()) setActive(false); 5646 5647 final ViewTreeObserver treeObserver = mWebView.getViewTreeObserver(); 5648 if (mGlobalLayoutListener != null) { 5649 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5650 mGlobalLayoutListener = null; 5651 } 5652 if (mScrollChangedListener != null) { 5653 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5654 mScrollChangedListener = null; 5655 } 5656 5657 removeAccessibilityApisFromJavaScript(); 5658 } 5659 5660 @Override 5661 public void onVisibilityChanged(View changedView, int visibility) { 5662 // The zoomManager may be null if the webview is created from XML that 5663 // specifies the view's visibility param as not visible (see http://b/2794841) 5664 if (visibility != View.VISIBLE && mZoomManager != null) { 5665 mZoomManager.dismissZoomPicker(); 5666 } 5667 updateDrawingState(); 5668 } 5669 5670 void setActive(boolean active) { 5671 if (active) { 5672 if (mWebView.hasFocus()) { 5673 // If our window regained focus, and we have focus, then begin 5674 // drawing the cursor ring 5675 mDrawCursorRing = true; 5676 setFocusControllerActive(true); 5677 } else { 5678 mDrawCursorRing = false; 5679 setFocusControllerActive(false); 5680 } 5681 } else { 5682 if (!mZoomManager.isZoomPickerVisible()) { 5683 /* 5684 * The external zoom controls come in their own window, so our 5685 * window loses focus. Our policy is to not draw the cursor ring 5686 * if our window is not focused, but this is an exception since 5687 * the user can still navigate the web page with the zoom 5688 * controls showing. 5689 */ 5690 mDrawCursorRing = false; 5691 } 5692 mKeysPressed.clear(); 5693 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5694 mTouchMode = TOUCH_DONE_MODE; 5695 setFocusControllerActive(false); 5696 } 5697 invalidate(); 5698 } 5699 5700 // To avoid drawing the cursor ring, and remove the TextView when our window 5701 // loses focus. 5702 @Override 5703 public void onWindowFocusChanged(boolean hasWindowFocus) { 5704 setActive(hasWindowFocus); 5705 if (hasWindowFocus) { 5706 JWebCoreJavaBridge.setActiveWebView(this); 5707 if (mPictureUpdatePausedForFocusChange) { 5708 WebViewCore.resumeUpdatePicture(mWebViewCore); 5709 mPictureUpdatePausedForFocusChange = false; 5710 } 5711 } else { 5712 JWebCoreJavaBridge.removeActiveWebView(this); 5713 final WebSettings settings = getSettings(); 5714 if (settings != null && settings.enableSmoothTransition() && 5715 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 5716 WebViewCore.pauseUpdatePicture(mWebViewCore); 5717 mPictureUpdatePausedForFocusChange = true; 5718 } 5719 } 5720 } 5721 5722 /* 5723 * Pass a message to WebCore Thread, telling the WebCore::Page's 5724 * FocusController to be "inactive" so that it will 5725 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5726 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5727 */ 5728 /* package */ void setFocusControllerActive(boolean active) { 5729 if (mWebViewCore == null) return; 5730 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5731 // Need to send this message after the document regains focus. 5732 if (active && mListBoxMessage != null) { 5733 mWebViewCore.sendMessage(mListBoxMessage); 5734 mListBoxMessage = null; 5735 } 5736 } 5737 5738 @Override 5739 public void onFocusChanged(boolean focused, int direction, 5740 Rect previouslyFocusedRect) { 5741 if (DebugFlags.WEB_VIEW) { 5742 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5743 } 5744 if (focused) { 5745 mDrawCursorRing = true; 5746 setFocusControllerActive(true); 5747 } else { 5748 mDrawCursorRing = false; 5749 setFocusControllerActive(false); 5750 mKeysPressed.clear(); 5751 } 5752 if (!mTouchHighlightRegion.isEmpty()) { 5753 mWebView.invalidate(mTouchHighlightRegion.getBounds()); 5754 } 5755 } 5756 5757 void setGLRectViewport() { 5758 // Use the getGlobalVisibleRect() to get the intersection among the parents 5759 // visible == false means we're clipped - send a null rect down to indicate that 5760 // we should not draw 5761 boolean visible = mWebView.getGlobalVisibleRect(mGLRectViewport); 5762 if (visible) { 5763 // Then need to invert the Y axis, just for GL 5764 View rootView = mWebView.getRootView(); 5765 int rootViewHeight = rootView.getHeight(); 5766 mViewRectViewport.set(mGLRectViewport); 5767 int savedWebViewBottom = mGLRectViewport.bottom; 5768 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 5769 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5770 mGLViewportEmpty = false; 5771 } else { 5772 mGLViewportEmpty = true; 5773 } 5774 calcOurContentVisibleRectF(mVisibleContentRect); 5775 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5776 mGLViewportEmpty ? null : mViewRectViewport, 5777 mVisibleContentRect, getScale()); 5778 } 5779 5780 /** 5781 * @hide 5782 */ 5783 @Override 5784 public boolean setFrame(int left, int top, int right, int bottom) { 5785 boolean changed = mWebViewPrivate.super_setFrame(left, top, right, bottom); 5786 if (!changed && mHeightCanMeasure) { 5787 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5788 // in WebViewCore after we get the first layout. We do call 5789 // requestLayout() when we get contentSizeChanged(). But the View 5790 // system won't call onSizeChanged if the dimension is not changed. 5791 // In this case, we need to call sendViewSizeZoom() explicitly to 5792 // notify the WebKit about the new dimensions. 5793 sendViewSizeZoom(false); 5794 } 5795 setGLRectViewport(); 5796 return changed; 5797 } 5798 5799 @Override 5800 public void onSizeChanged(int w, int h, int ow, int oh) { 5801 // adjust the max viewport width depending on the view dimensions. This 5802 // is to ensure the scaling is not going insane. So do not shrink it if 5803 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5804 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5805 if (newMaxViewportWidth > sMaxViewportWidth) { 5806 sMaxViewportWidth = newMaxViewportWidth; 5807 } 5808 5809 mZoomManager.onSizeChanged(w, h, ow, oh); 5810 5811 if (mLoadedPicture != null && mDelaySetPicture == null) { 5812 // Size changes normally result in a new picture 5813 // Re-set the loaded picture to simulate that 5814 // However, do not update the base layer as that hasn't changed 5815 setNewPicture(mLoadedPicture, false); 5816 } 5817 } 5818 5819 @Override 5820 public void onScrollChanged(int l, int t, int oldl, int oldt) { 5821 if (!mInOverScrollMode) { 5822 sendOurVisibleRect(); 5823 // update WebKit if visible title bar height changed. The logic is same 5824 // as getVisibleTitleHeightImpl. 5825 int titleHeight = getTitleHeight(); 5826 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5827 sendViewSizeZoom(false); 5828 } 5829 } 5830 } 5831 5832 @Override 5833 public boolean dispatchKeyEvent(KeyEvent event) { 5834 switch (event.getAction()) { 5835 case KeyEvent.ACTION_DOWN: 5836 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5837 break; 5838 case KeyEvent.ACTION_MULTIPLE: 5839 // Always accept the action. 5840 break; 5841 case KeyEvent.ACTION_UP: 5842 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5843 if (location == -1) { 5844 // We did not receive the key down for this key, so do not 5845 // handle the key up. 5846 return false; 5847 } else { 5848 // We did receive the key down. Handle the key up, and 5849 // remove it from our pressed keys. 5850 mKeysPressed.remove(location); 5851 } 5852 break; 5853 default: 5854 // Accept the action. This should not happen, unless a new 5855 // action is added to KeyEvent. 5856 break; 5857 } 5858 return mWebViewPrivate.super_dispatchKeyEvent(event); 5859 } 5860 5861 /* 5862 * Here is the snap align logic: 5863 * 1. If it starts nearly horizontally or vertically, snap align; 5864 * 2. If there is a dramitic direction change, let it go; 5865 * 5866 * Adjustable parameters. Angle is the radians on a unit circle, limited 5867 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 5868 */ 5869 private static final float HSLOPE_TO_START_SNAP = .25f; 5870 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 5871 private static final float VSLOPE_TO_START_SNAP = 1.25f; 5872 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 5873 /* 5874 * These values are used to influence the average angle when entering 5875 * snap mode. If is is the first movement entering snap, we set the average 5876 * to the appropriate ideal. If the user is entering into snap after the 5877 * first movement, then we average the average angle with these values. 5878 */ 5879 private static final float ANGLE_VERT = 2f; 5880 private static final float ANGLE_HORIZ = 0f; 5881 /* 5882 * The modified moving average weight. 5883 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 5884 */ 5885 private static final float MMA_WEIGHT_N = 5; 5886 5887 private boolean hitFocusedPlugin(int contentX, int contentY) { 5888 // TODO: Figure out what to do with this (b/6111517) 5889 return false; 5890 } 5891 5892 private boolean shouldForwardTouchEvent() { 5893 if (mFullScreenHolder != null) return true; 5894 if (mBlockWebkitViewMessages) return false; 5895 return mForwardTouchEvents 5896 && !mSelectingText 5897 && mPreventDefault != PREVENT_DEFAULT_IGNORE 5898 && mPreventDefault != PREVENT_DEFAULT_NO; 5899 } 5900 5901 private boolean inFullScreenMode() { 5902 return mFullScreenHolder != null; 5903 } 5904 5905 private void dismissFullScreenMode() { 5906 if (inFullScreenMode()) { 5907 mFullScreenHolder.hide(); 5908 mFullScreenHolder = null; 5909 invalidate(); 5910 } 5911 } 5912 5913 void onPinchToZoomAnimationStart() { 5914 // cancel the single touch handling 5915 cancelTouch(); 5916 onZoomAnimationStart(); 5917 } 5918 5919 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5920 onZoomAnimationEnd(); 5921 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5922 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5923 // as it may trigger the unwanted fling. 5924 mTouchMode = TOUCH_PINCH_DRAG; 5925 mConfirmMove = true; 5926 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5927 } 5928 5929 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5930 // layer is found. 5931 private void startScrollingLayer(float x, float y) { 5932 int contentX = viewToContentX((int) x + getScrollX()); 5933 int contentY = viewToContentY((int) y + getScrollY()); 5934 mCurrentScrollingLayerId = nativeScrollableLayer(contentX, contentY, 5935 mScrollingLayerRect, mScrollingLayerBounds); 5936 if (mCurrentScrollingLayerId != 0) { 5937 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5938 } 5939 } 5940 5941 // 1/(density * density) used to compute the distance between points. 5942 // Computed in init(). 5943 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5944 5945 // The distance between two points reported in onTouchEvent scaled by the 5946 // density of the screen. 5947 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5948 5949 @Override 5950 public boolean onHoverEvent(MotionEvent event) { 5951 if (mNativeClass == 0) { 5952 return false; 5953 } 5954 int x = viewToContentX((int) event.getX() + getScrollX()); 5955 int y = viewToContentY((int) event.getY() + getScrollY()); 5956 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, x, y); 5957 return true; 5958 } 5959 5960 @Override 5961 public boolean onTouchEvent(MotionEvent ev) { 5962 if (mNativeClass == 0 || (!mWebView.isClickable() && !mWebView.isLongClickable())) { 5963 return false; 5964 } 5965 5966 if (!mWebView.isFocused()) { 5967 mWebView.requestFocus(); 5968 } 5969 5970 if (DebugFlags.WEB_VIEW) { 5971 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5972 + " mTouchMode=" + mTouchMode 5973 + " numPointers=" + ev.getPointerCount()); 5974 } 5975 5976 // If WebKit wasn't interested in this multitouch gesture, enqueue 5977 // the event for handling directly rather than making the round trip 5978 // to WebKit and back. 5979 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 5980 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 5981 } else { 5982 mTouchEventQueue.enqueueTouchEvent(ev); 5983 } 5984 5985 // Since all events are handled asynchronously, we always want the gesture stream. 5986 return true; 5987 } 5988 5989 private float calculateDragAngle(int dx, int dy) { 5990 dx = Math.abs(dx); 5991 dy = Math.abs(dy); 5992 return (float) Math.atan2(dy, dx); 5993 } 5994 5995 /* 5996 * Common code for single touch and multi-touch. 5997 * (x, y) denotes current focus point, which is the touch point for single touch 5998 * and the middle point for multi-touch. 5999 */ 6000 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 6001 long eventTime = ev.getEventTime(); 6002 6003 // Due to the touch screen edge effect, a touch closer to the edge 6004 // always snapped to the edge. As getViewWidth() can be different from 6005 // getWidth() due to the scrollbar, adjusting the point to match 6006 // getViewWidth(). Same applied to the height. 6007 x = Math.min(x, getViewWidth() - 1); 6008 y = Math.min(y, getViewHeightWithTitle() - 1); 6009 6010 int deltaX = mLastTouchX - x; 6011 int deltaY = mLastTouchY - y; 6012 int contentX = viewToContentX(x + getScrollX()); 6013 int contentY = viewToContentY(y + getScrollY()); 6014 6015 switch (action) { 6016 case MotionEvent.ACTION_DOWN: { 6017 mPreventDefault = PREVENT_DEFAULT_NO; 6018 mConfirmMove = false; 6019 mInitialHitTestResult = null; 6020 if (!mScroller.isFinished()) { 6021 // stop the current scroll animation, but if this is 6022 // the start of a fling, allow it to add to the current 6023 // fling's velocity 6024 mScroller.abortAnimation(); 6025 mTouchMode = TOUCH_DRAG_START_MODE; 6026 mConfirmMove = true; 6027 nativeSetIsScrolling(false); 6028 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 6029 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 6030 removeTouchHighlight(); 6031 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 6032 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 6033 } else { 6034 // commit the short press action for the previous tap 6035 doShortPress(); 6036 mTouchMode = TOUCH_INIT_MODE; 6037 mDeferTouchProcess = !mBlockWebkitViewMessages 6038 && (!inFullScreenMode() && mForwardTouchEvents) 6039 ? hitFocusedPlugin(contentX, contentY) 6040 : false; 6041 } 6042 } else { // the normal case 6043 mTouchMode = TOUCH_INIT_MODE; 6044 mDeferTouchProcess = !mBlockWebkitViewMessages 6045 && (!inFullScreenMode() && mForwardTouchEvents) 6046 ? hitFocusedPlugin(contentX, contentY) 6047 : false; 6048 TouchHighlightData data = new TouchHighlightData(); 6049 data.mX = contentX; 6050 data.mY = contentY; 6051 data.mNativeLayerRect = new Rect(); 6052 data.mNativeLayer = nativeScrollableLayer( 6053 contentX, contentY, data.mNativeLayerRect, null); 6054 data.mSlop = viewToContentDimension(mNavSlop); 6055 mTouchHighlightRegion.setEmpty(); 6056 if (!mBlockWebkitViewMessages) { 6057 mTouchHighlightRequested = System.currentTimeMillis(); 6058 mWebViewCore.sendMessageAtFrontOfQueue( 6059 EventHub.HIT_TEST, data); 6060 } 6061 if (DEBUG_TOUCH_HIGHLIGHT) { 6062 if (getSettings().getNavDump()) { 6063 mTouchHighlightX = x + getScrollX(); 6064 mTouchHighlightY = y + getScrollY(); 6065 mPrivateHandler.postDelayed(new Runnable() { 6066 @Override 6067 public void run() { 6068 mTouchHighlightX = mTouchHighlightY = 0; 6069 invalidate(); 6070 } 6071 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 6072 } 6073 } 6074 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 6075 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 6076 (eventTime - mLastTouchUpTime), eventTime); 6077 } 6078 mSelectionStarted = false; 6079 if (mSelectingText) { 6080 int shiftedY = y - getTitleHeight() + getScrollY(); 6081 int shiftedX = x + getScrollX(); 6082 if (mSelectHandleCenter != null && mSelectHandleCenter.getBounds() 6083 .contains(shiftedX, shiftedY)) { 6084 mSelectionStarted = true; 6085 mSelectDraggingCursor = mSelectCursorBase; 6086 mPrivateHandler.removeMessages(CLEAR_CARET_HANDLE); 6087 hidePasteButton(); 6088 } else if (mSelectHandleLeft != null 6089 && mSelectHandleLeft.getBounds() 6090 .contains(shiftedX, shiftedY)) { 6091 mSelectionStarted = true; 6092 mSelectDraggingCursor = mSelectCursorBase; 6093 } else if (mSelectHandleRight != null 6094 && mSelectHandleRight.getBounds() 6095 .contains(shiftedX, shiftedY)) { 6096 mSelectionStarted = true; 6097 mSelectDraggingCursor = mSelectCursorExtent; 6098 } else if (mIsCaretSelection) { 6099 selectionDone(); 6100 } 6101 if (mSelectDraggingCursor != null) { 6102 mSelectDraggingOffset.set( 6103 mSelectDraggingCursor.left - contentX, 6104 mSelectDraggingCursor.top - contentY); 6105 } 6106 if (DebugFlags.WEB_VIEW) { 6107 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 6108 } 6109 } 6110 } 6111 // Trigger the link 6112 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 6113 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 6114 mPrivateHandler.sendEmptyMessageDelayed( 6115 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 6116 mPrivateHandler.sendEmptyMessageDelayed( 6117 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 6118 if (inFullScreenMode() || mDeferTouchProcess) { 6119 mPreventDefault = PREVENT_DEFAULT_YES; 6120 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 6121 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 6122 } else { 6123 mPreventDefault = PREVENT_DEFAULT_NO; 6124 } 6125 // pass the touch events from UI thread to WebCore thread 6126 if (shouldForwardTouchEvent()) { 6127 TouchEventData ted = new TouchEventData(); 6128 ted.mAction = action; 6129 ted.mIds = new int[1]; 6130 ted.mIds[0] = ev.getPointerId(0); 6131 ted.mPoints = new Point[1]; 6132 ted.mPoints[0] = new Point(contentX, contentY); 6133 ted.mPointsInView = new Point[1]; 6134 ted.mPointsInView[0] = new Point(x, y); 6135 ted.mMetaState = ev.getMetaState(); 6136 ted.mReprocess = mDeferTouchProcess; 6137 ted.mNativeLayer = nativeScrollableLayer( 6138 contentX, contentY, ted.mNativeLayerRect, null); 6139 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6140 mTouchEventQueue.preQueueTouchEventData(ted); 6141 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6142 if (mDeferTouchProcess) { 6143 // still needs to set them for compute deltaX/Y 6144 mLastTouchX = x; 6145 mLastTouchY = y; 6146 break; 6147 } 6148 if (!inFullScreenMode()) { 6149 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 6150 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6151 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6152 action, 0), TAP_TIMEOUT); 6153 } 6154 } 6155 } 6156 startTouch(x, y, eventTime); 6157 break; 6158 } 6159 case MotionEvent.ACTION_MOVE: { 6160 boolean firstMove = false; 6161 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 6162 >= mTouchSlopSquare) { 6163 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6164 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6165 mConfirmMove = true; 6166 firstMove = true; 6167 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6168 mTouchMode = TOUCH_INIT_MODE; 6169 } 6170 removeTouchHighlight(); 6171 } 6172 if (mSelectingText && mSelectionStarted) { 6173 if (DebugFlags.WEB_VIEW) { 6174 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 6175 } 6176 ViewParent parent = mWebView.getParent(); 6177 if (parent != null) { 6178 parent.requestDisallowInterceptTouchEvent(true); 6179 } 6180 if (deltaX != 0 || deltaY != 0) { 6181 mSelectDraggingCursor.offsetTo( 6182 contentX + mSelectDraggingOffset.x, 6183 contentY + mSelectDraggingOffset.y); 6184 updateWebkitSelection(); 6185 mLastTouchX = x; 6186 mLastTouchY = y; 6187 invalidate(); 6188 } 6189 break; 6190 } 6191 6192 // pass the touch events from UI thread to WebCore thread 6193 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 6194 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 6195 TouchEventData ted = new TouchEventData(); 6196 ted.mAction = action; 6197 ted.mIds = new int[1]; 6198 ted.mIds[0] = ev.getPointerId(0); 6199 ted.mPoints = new Point[1]; 6200 ted.mPoints[0] = new Point(contentX, contentY); 6201 ted.mPointsInView = new Point[1]; 6202 ted.mPointsInView[0] = new Point(x, y); 6203 ted.mMetaState = ev.getMetaState(); 6204 ted.mReprocess = mDeferTouchProcess; 6205 ted.mNativeLayer = mCurrentScrollingLayerId; 6206 ted.mNativeLayerRect.set(mScrollingLayerRect); 6207 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6208 mTouchEventQueue.preQueueTouchEventData(ted); 6209 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6210 mLastSentTouchTime = eventTime; 6211 if (mDeferTouchProcess) { 6212 break; 6213 } 6214 if (firstMove && !inFullScreenMode()) { 6215 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6216 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6217 action, 0), TAP_TIMEOUT); 6218 } 6219 } 6220 if (mTouchMode == TOUCH_DONE_MODE 6221 || mPreventDefault == PREVENT_DEFAULT_YES) { 6222 // no dragging during scroll zoom animation, or when prevent 6223 // default is yes 6224 break; 6225 } 6226 if (mVelocityTracker == null) { 6227 Log.e(LOGTAG, "Got null mVelocityTracker when " 6228 + "mPreventDefault = " + mPreventDefault 6229 + " mDeferTouchProcess = " + mDeferTouchProcess 6230 + " mTouchMode = " + mTouchMode); 6231 } else { 6232 mVelocityTracker.addMovement(ev); 6233 } 6234 6235 if (mTouchMode != TOUCH_DRAG_MODE && 6236 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6237 6238 if (!mConfirmMove) { 6239 break; 6240 } 6241 6242 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6243 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6244 // track mLastTouchTime as we may need to do fling at 6245 // ACTION_UP 6246 mLastTouchTime = eventTime; 6247 break; 6248 } 6249 6250 // Only lock dragging to one axis if we don't have a scale in progress. 6251 // Scaling implies free-roaming movement. Note this is only ever a question 6252 // if mZoomManager.supportsPanDuringZoom() is true. 6253 final ScaleGestureDetector detector = 6254 mZoomManager.getMultiTouchGestureDetector(); 6255 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6256 if (detector == null || !detector.isInProgress()) { 6257 // if it starts nearly horizontal or vertical, enforce it 6258 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6259 mSnapScrollMode = SNAP_X; 6260 mSnapPositive = deltaX > 0; 6261 mAverageAngle = ANGLE_HORIZ; 6262 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6263 mSnapScrollMode = SNAP_Y; 6264 mSnapPositive = deltaY > 0; 6265 mAverageAngle = ANGLE_VERT; 6266 } 6267 } 6268 6269 mTouchMode = TOUCH_DRAG_MODE; 6270 mLastTouchX = x; 6271 mLastTouchY = y; 6272 deltaX = 0; 6273 deltaY = 0; 6274 6275 startScrollingLayer(x, y); 6276 startDrag(); 6277 } 6278 6279 // do pan 6280 boolean done = false; 6281 boolean keepScrollBarsVisible = false; 6282 if (deltaX == 0 && deltaY == 0) { 6283 keepScrollBarsVisible = done = true; 6284 } else { 6285 mAverageAngle += 6286 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6287 / MMA_WEIGHT_N; 6288 if (mSnapScrollMode != SNAP_NONE) { 6289 if (mSnapScrollMode == SNAP_Y) { 6290 // radical change means getting out of snap mode 6291 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6292 mSnapScrollMode = SNAP_NONE; 6293 } 6294 } 6295 if (mSnapScrollMode == SNAP_X) { 6296 // radical change means getting out of snap mode 6297 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6298 mSnapScrollMode = SNAP_NONE; 6299 } 6300 } 6301 } else { 6302 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6303 mSnapScrollMode = SNAP_X; 6304 mSnapPositive = deltaX > 0; 6305 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6306 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6307 mSnapScrollMode = SNAP_Y; 6308 mSnapPositive = deltaY > 0; 6309 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6310 } 6311 } 6312 if (mSnapScrollMode != SNAP_NONE) { 6313 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6314 deltaY = 0; 6315 } else { 6316 deltaX = 0; 6317 } 6318 } 6319 mLastTouchX = x; 6320 mLastTouchY = y; 6321 6322 if (deltaX * deltaX + deltaY * deltaY > mTouchSlopSquare) { 6323 mHeldMotionless = MOTIONLESS_FALSE; 6324 nativeSetIsScrolling(true); 6325 } else { 6326 mHeldMotionless = MOTIONLESS_TRUE; 6327 nativeSetIsScrolling(false); 6328 keepScrollBarsVisible = true; 6329 } 6330 6331 mLastTouchTime = eventTime; 6332 } 6333 6334 doDrag(deltaX, deltaY); 6335 6336 // Turn off scrollbars when dragging a layer. 6337 if (keepScrollBarsVisible && 6338 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6339 if (mHeldMotionless != MOTIONLESS_TRUE) { 6340 mHeldMotionless = MOTIONLESS_TRUE; 6341 invalidate(); 6342 } 6343 // keep the scrollbar on the screen even there is no scroll 6344 mWebViewPrivate.awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6345 false); 6346 // Post a message so that we'll keep them alive while we're not scrolling. 6347 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6348 .obtainMessage(AWAKEN_SCROLL_BARS), 6349 ViewConfiguration.getScrollDefaultDelay()); 6350 // return false to indicate that we can't pan out of the 6351 // view space 6352 return !done; 6353 } else { 6354 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6355 } 6356 break; 6357 } 6358 case MotionEvent.ACTION_UP: { 6359 // pass the touch events from UI thread to WebCore thread 6360 if (shouldForwardTouchEvent()) { 6361 TouchEventData ted = new TouchEventData(); 6362 ted.mIds = new int[1]; 6363 ted.mIds[0] = ev.getPointerId(0); 6364 ted.mAction = action; 6365 ted.mPoints = new Point[1]; 6366 ted.mPoints[0] = new Point(contentX, contentY); 6367 ted.mPointsInView = new Point[1]; 6368 ted.mPointsInView[0] = new Point(x, y); 6369 ted.mMetaState = ev.getMetaState(); 6370 ted.mReprocess = mDeferTouchProcess; 6371 ted.mNativeLayer = mCurrentScrollingLayerId; 6372 ted.mNativeLayerRect.set(mScrollingLayerRect); 6373 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6374 mTouchEventQueue.preQueueTouchEventData(ted); 6375 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6376 } 6377 mLastTouchUpTime = eventTime; 6378 if (mSentAutoScrollMessage) { 6379 mAutoScrollX = mAutoScrollY = 0; 6380 } 6381 switch (mTouchMode) { 6382 case TOUCH_DOUBLE_TAP_MODE: // double tap 6383 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6384 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6385 if (inFullScreenMode() || mDeferTouchProcess) { 6386 TouchEventData ted = new TouchEventData(); 6387 ted.mIds = new int[1]; 6388 ted.mIds[0] = ev.getPointerId(0); 6389 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6390 ted.mPoints = new Point[1]; 6391 ted.mPoints[0] = new Point(contentX, contentY); 6392 ted.mPointsInView = new Point[1]; 6393 ted.mPointsInView[0] = new Point(x, y); 6394 ted.mMetaState = ev.getMetaState(); 6395 ted.mReprocess = mDeferTouchProcess; 6396 ted.mNativeLayer = nativeScrollableLayer( 6397 contentX, contentY, 6398 ted.mNativeLayerRect, null); 6399 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6400 mTouchEventQueue.preQueueTouchEventData(ted); 6401 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6402 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6403 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6404 mTouchMode = TOUCH_DONE_MODE; 6405 } 6406 break; 6407 case TOUCH_INIT_MODE: // tap 6408 case TOUCH_SHORTPRESS_START_MODE: 6409 case TOUCH_SHORTPRESS_MODE: 6410 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6411 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6412 if (mConfirmMove) { 6413 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6414 " WebCore's response for touch down."); 6415 if (mPreventDefault != PREVENT_DEFAULT_YES 6416 && (computeMaxScrollX() > 0 6417 || computeMaxScrollY() > 0)) { 6418 // If the user has performed a very quick touch 6419 // sequence it is possible that we may get here 6420 // before WebCore has had a chance to process the events. 6421 // In this case, any call to preventDefault in the 6422 // JS touch handler will not have been executed yet. 6423 // Hence we will see both the UI (now) and WebCore 6424 // (when context switches) handling the event, 6425 // regardless of whether the web developer actually 6426 // doeses preventDefault in their touch handler. This 6427 // is the nature of our asynchronous touch model. 6428 6429 // we will not rewrite drag code here, but we 6430 // will try fling if it applies. 6431 WebViewCore.reducePriority(); 6432 // to get better performance, pause updating the 6433 // picture 6434 WebViewCore.pauseUpdatePicture(mWebViewCore); 6435 // fall through to TOUCH_DRAG_MODE 6436 } else { 6437 // WebKit may consume the touch event and modify 6438 // DOM. drawContentPicture() will be called with 6439 // animateSroll as true for better performance. 6440 // Force redraw in high-quality. 6441 invalidate(); 6442 break; 6443 } 6444 } else { 6445 if (mSelectingText) { 6446 // tapping on selection or controls does nothing 6447 if (!mSelectionStarted) { 6448 selectionDone(); 6449 } 6450 break; 6451 } 6452 // only trigger double tap if the WebView is 6453 // scalable 6454 if (mTouchMode == TOUCH_INIT_MODE 6455 && (canZoomIn() || canZoomOut())) { 6456 mPrivateHandler.sendEmptyMessageDelayed( 6457 RELEASE_SINGLE_TAP, ViewConfiguration 6458 .getDoubleTapTimeout()); 6459 } else { 6460 doShortPress(); 6461 } 6462 break; 6463 } 6464 case TOUCH_DRAG_MODE: 6465 case TOUCH_DRAG_LAYER_MODE: 6466 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6467 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6468 // if the user waits a while w/o moving before the 6469 // up, we don't want to do a fling 6470 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6471 if (mVelocityTracker == null) { 6472 Log.e(LOGTAG, "Got null mVelocityTracker when " 6473 + "mPreventDefault = " 6474 + mPreventDefault 6475 + " mDeferTouchProcess = " 6476 + mDeferTouchProcess); 6477 } else { 6478 mVelocityTracker.addMovement(ev); 6479 } 6480 // set to MOTIONLESS_IGNORE so that it won't keep 6481 // removing and sending message in 6482 // drawCoreAndCursorRing() 6483 mHeldMotionless = MOTIONLESS_IGNORE; 6484 doFling(); 6485 break; 6486 } else { 6487 if (mScroller.springBack(getScrollX(), getScrollY(), 0, 6488 computeMaxScrollX(), 0, 6489 computeMaxScrollY())) { 6490 invalidate(); 6491 } 6492 } 6493 // redraw in high-quality, as we're done dragging 6494 mHeldMotionless = MOTIONLESS_TRUE; 6495 invalidate(); 6496 // fall through 6497 case TOUCH_DRAG_START_MODE: 6498 // TOUCH_DRAG_START_MODE should not happen for the real 6499 // device as we almost certain will get a MOVE. But this 6500 // is possible on emulator. 6501 mLastVelocity = 0; 6502 WebViewCore.resumePriority(); 6503 if (!mSelectingText) { 6504 WebViewCore.resumeUpdatePicture(mWebViewCore); 6505 } 6506 break; 6507 } 6508 stopTouch(); 6509 break; 6510 } 6511 case MotionEvent.ACTION_CANCEL: { 6512 if (mTouchMode == TOUCH_DRAG_MODE) { 6513 mScroller.springBack(getScrollX(), getScrollY(), 0, 6514 computeMaxScrollX(), 0, computeMaxScrollY()); 6515 invalidate(); 6516 } 6517 cancelWebCoreTouchEvent(contentX, contentY, false); 6518 cancelTouch(); 6519 break; 6520 } 6521 } 6522 return true; 6523 } 6524 6525 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6526 TouchEventData ted = new TouchEventData(); 6527 ted.mAction = ev.getActionMasked(); 6528 final int count = ev.getPointerCount(); 6529 ted.mIds = new int[count]; 6530 ted.mPoints = new Point[count]; 6531 ted.mPointsInView = new Point[count]; 6532 for (int c = 0; c < count; c++) { 6533 ted.mIds[c] = ev.getPointerId(c); 6534 int x = viewToContentX((int) ev.getX(c) + getScrollX()); 6535 int y = viewToContentY((int) ev.getY(c) + getScrollY()); 6536 ted.mPoints[c] = new Point(x, y); 6537 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6538 } 6539 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6540 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6541 ted.mActionIndex = ev.getActionIndex(); 6542 } 6543 ted.mMetaState = ev.getMetaState(); 6544 ted.mReprocess = true; 6545 ted.mMotionEvent = MotionEvent.obtain(ev); 6546 ted.mSequence = sequence; 6547 mTouchEventQueue.preQueueTouchEventData(ted); 6548 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6549 mWebView.cancelLongPress(); 6550 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6551 } 6552 6553 void handleMultiTouchInWebView(MotionEvent ev) { 6554 if (DebugFlags.WEB_VIEW) { 6555 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6556 + " mTouchMode=" + mTouchMode 6557 + " numPointers=" + ev.getPointerCount() 6558 + " scrolloffset=(" + getScrollX() + "," + getScrollY() + ")"); 6559 } 6560 6561 final ScaleGestureDetector detector = 6562 mZoomManager.getMultiTouchGestureDetector(); 6563 6564 // A few apps use WebView but don't instantiate gesture detector. 6565 // We don't need to support multi touch for them. 6566 if (detector == null) return; 6567 6568 float x = ev.getX(); 6569 float y = ev.getY(); 6570 6571 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6572 detector.onTouchEvent(ev); 6573 6574 if (detector.isInProgress()) { 6575 if (DebugFlags.WEB_VIEW) { 6576 Log.v(LOGTAG, "detector is in progress"); 6577 } 6578 mLastTouchTime = ev.getEventTime(); 6579 x = detector.getFocusX(); 6580 y = detector.getFocusY(); 6581 6582 mWebView.cancelLongPress(); 6583 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6584 if (!mZoomManager.supportsPanDuringZoom()) { 6585 return; 6586 } 6587 mTouchMode = TOUCH_DRAG_MODE; 6588 if (mVelocityTracker == null) { 6589 mVelocityTracker = VelocityTracker.obtain(); 6590 } 6591 } 6592 } 6593 6594 int action = ev.getActionMasked(); 6595 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6596 cancelTouch(); 6597 action = MotionEvent.ACTION_DOWN; 6598 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 6599 // set mLastTouchX/Y to the remaining points for multi-touch. 6600 mLastTouchX = Math.round(x); 6601 mLastTouchY = Math.round(y); 6602 } else if (action == MotionEvent.ACTION_MOVE) { 6603 // negative x or y indicate it is on the edge, skip it. 6604 if (x < 0 || y < 0) { 6605 return; 6606 } 6607 } 6608 6609 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6610 } 6611 6612 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6613 if (shouldForwardTouchEvent()) { 6614 if (removeEvents) { 6615 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6616 } 6617 TouchEventData ted = new TouchEventData(); 6618 ted.mIds = new int[1]; 6619 ted.mIds[0] = 0; 6620 ted.mPoints = new Point[1]; 6621 ted.mPoints[0] = new Point(x, y); 6622 ted.mPointsInView = new Point[1]; 6623 int viewX = contentToViewX(x) - getScrollX(); 6624 int viewY = contentToViewY(y) - getScrollY(); 6625 ted.mPointsInView[0] = new Point(viewX, viewY); 6626 ted.mAction = MotionEvent.ACTION_CANCEL; 6627 ted.mNativeLayer = nativeScrollableLayer( 6628 x, y, ted.mNativeLayerRect, null); 6629 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6630 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6631 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6632 6633 if (removeEvents) { 6634 // Mark this after sending the message above; we should 6635 // be willing to ignore the cancel event that we just sent. 6636 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6637 } 6638 } 6639 } 6640 6641 private void startTouch(float x, float y, long eventTime) { 6642 // Remember where the motion event started 6643 mStartTouchX = mLastTouchX = Math.round(x); 6644 mStartTouchY = mLastTouchY = Math.round(y); 6645 mLastTouchTime = eventTime; 6646 mVelocityTracker = VelocityTracker.obtain(); 6647 mSnapScrollMode = SNAP_NONE; 6648 } 6649 6650 private void startDrag() { 6651 WebViewCore.reducePriority(); 6652 // to get better performance, pause updating the picture 6653 WebViewCore.pauseUpdatePicture(mWebViewCore); 6654 nativeSetIsScrolling(true); 6655 6656 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6657 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6658 mZoomManager.invokeZoomPicker(); 6659 } 6660 } 6661 6662 private void doDrag(int deltaX, int deltaY) { 6663 if ((deltaX | deltaY) != 0) { 6664 int oldX = getScrollX(); 6665 int oldY = getScrollY(); 6666 int rangeX = computeMaxScrollX(); 6667 int rangeY = computeMaxScrollY(); 6668 // Check for the original scrolling layer in case we change 6669 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6670 // reached the edge of a layer but mScrollingLayer will be non-zero 6671 // if we initiated the drag on a layer. 6672 if (mCurrentScrollingLayerId != 0) { 6673 final int contentX = viewToContentDimension(deltaX); 6674 final int contentY = viewToContentDimension(deltaY); 6675 6676 // Check the scrolling bounds to see if we will actually do any 6677 // scrolling. The rectangle is in document coordinates. 6678 final int maxX = mScrollingLayerRect.right; 6679 final int maxY = mScrollingLayerRect.bottom; 6680 final int resultX = Math.max(0, 6681 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6682 final int resultY = Math.max(0, 6683 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6684 6685 if (resultX != mScrollingLayerRect.left || 6686 resultY != mScrollingLayerRect.top) { 6687 // In case we switched to dragging the page. 6688 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6689 deltaX = contentX; 6690 deltaY = contentY; 6691 oldX = mScrollingLayerRect.left; 6692 oldY = mScrollingLayerRect.top; 6693 rangeX = maxX; 6694 rangeY = maxY; 6695 } else { 6696 // Scroll the main page if we are not going to scroll the 6697 // layer. This does not reset mScrollingLayer in case the 6698 // user changes directions and the layer can scroll the 6699 // other way. 6700 mTouchMode = TOUCH_DRAG_MODE; 6701 } 6702 } 6703 6704 if (mOverScrollGlow != null) { 6705 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6706 } 6707 6708 mWebViewPrivate.overScrollBy(deltaX, deltaY, oldX, oldY, 6709 rangeX, rangeY, 6710 mOverscrollDistance, mOverscrollDistance, true); 6711 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6712 invalidate(); 6713 } 6714 } 6715 mZoomManager.keepZoomPickerVisible(); 6716 } 6717 6718 private void stopTouch() { 6719 if (mScroller.isFinished() && !mSelectingText 6720 && (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 6721 WebViewCore.resumePriority(); 6722 WebViewCore.resumeUpdatePicture(mWebViewCore); 6723 nativeSetIsScrolling(false); 6724 } 6725 6726 // we also use mVelocityTracker == null to tell us that we are 6727 // not "moving around", so we can take the slower/prettier 6728 // mode in the drawing code 6729 if (mVelocityTracker != null) { 6730 mVelocityTracker.recycle(); 6731 mVelocityTracker = null; 6732 } 6733 6734 // Release any pulled glows 6735 if (mOverScrollGlow != null) { 6736 mOverScrollGlow.releaseAll(); 6737 } 6738 6739 if (mSelectingText) { 6740 mSelectionStarted = false; 6741 syncSelectionCursors(); 6742 if (mIsCaretSelection) { 6743 resetCaretTimer(); 6744 showPasteWindow(); 6745 } 6746 invalidate(); 6747 } 6748 } 6749 6750 private void cancelTouch() { 6751 // we also use mVelocityTracker == null to tell us that we are 6752 // not "moving around", so we can take the slower/prettier 6753 // mode in the drawing code 6754 if (mVelocityTracker != null) { 6755 mVelocityTracker.recycle(); 6756 mVelocityTracker = null; 6757 } 6758 6759 if ((mTouchMode == TOUCH_DRAG_MODE 6760 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6761 WebViewCore.resumePriority(); 6762 WebViewCore.resumeUpdatePicture(mWebViewCore); 6763 nativeSetIsScrolling(false); 6764 } 6765 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6766 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6767 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6768 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6769 removeTouchHighlight(); 6770 mHeldMotionless = MOTIONLESS_TRUE; 6771 mTouchMode = TOUCH_DONE_MODE; 6772 } 6773 6774 @Override 6775 public boolean onGenericMotionEvent(MotionEvent event) { 6776 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6777 switch (event.getAction()) { 6778 case MotionEvent.ACTION_SCROLL: { 6779 final float vscroll; 6780 final float hscroll; 6781 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6782 vscroll = 0; 6783 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6784 } else { 6785 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6786 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6787 } 6788 if (hscroll != 0 || vscroll != 0) { 6789 final int vdelta = (int) (vscroll * 6790 mWebViewPrivate.getVerticalScrollFactor()); 6791 final int hdelta = (int) (hscroll * 6792 mWebViewPrivate.getHorizontalScrollFactor()); 6793 if (pinScrollBy(hdelta, vdelta, false, 0)) { 6794 return true; 6795 } 6796 } 6797 } 6798 } 6799 } 6800 return mWebViewPrivate.super_onGenericMotionEvent(event); 6801 } 6802 6803 private long mTrackballFirstTime = 0; 6804 private long mTrackballLastTime = 0; 6805 private float mTrackballRemainsX = 0.0f; 6806 private float mTrackballRemainsY = 0.0f; 6807 private int mTrackballXMove = 0; 6808 private int mTrackballYMove = 0; 6809 private boolean mSelectingText = false; 6810 private boolean mSelectionStarted = false; 6811 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6812 private static final int TRACKBALL_TIMEOUT = 200; 6813 private static final int TRACKBALL_WAIT = 100; 6814 private static final int TRACKBALL_SCALE = 400; 6815 private static final int TRACKBALL_SCROLL_COUNT = 5; 6816 private static final int TRACKBALL_MOVE_COUNT = 10; 6817 private static final int TRACKBALL_MULTIPLIER = 3; 6818 private static final int SELECT_CURSOR_OFFSET = 16; 6819 private static final int SELECT_SCROLL = 5; 6820 private int mSelectX = 0; 6821 private int mSelectY = 0; 6822 private boolean mTrackballDown = false; 6823 private long mTrackballUpTime = 0; 6824 private long mLastCursorTime = 0; 6825 private Rect mLastCursorBounds; 6826 6827 // Set by default; BrowserActivity clears to interpret trackball data 6828 // directly for movement. Currently, the framework only passes 6829 // arrow key events, not trackball events, from one child to the next 6830 private boolean mMapTrackballToArrowKeys = true; 6831 6832 private DrawData mDelaySetPicture; 6833 private DrawData mLoadedPicture; 6834 6835 public void setMapTrackballToArrowKeys(boolean setMap) { 6836 checkThread(); 6837 mMapTrackballToArrowKeys = setMap; 6838 } 6839 6840 void resetTrackballTime() { 6841 mTrackballLastTime = 0; 6842 } 6843 6844 @Override 6845 public boolean onTrackballEvent(MotionEvent ev) { 6846 long time = ev.getEventTime(); 6847 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6848 if (ev.getY() > 0) pageDown(true); 6849 if (ev.getY() < 0) pageUp(true); 6850 return true; 6851 } 6852 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6853 if (mSelectingText) { 6854 return true; // discard press if copy in progress 6855 } 6856 mTrackballDown = true; 6857 if (mNativeClass == 0) { 6858 return false; 6859 } 6860 if (DebugFlags.WEB_VIEW) { 6861 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6862 + " time=" + time 6863 + " mLastCursorTime=" + mLastCursorTime); 6864 } 6865 if (mWebView.isInTouchMode()) mWebView.requestFocusFromTouch(); 6866 return false; // let common code in onKeyDown at it 6867 } 6868 if (ev.getAction() == MotionEvent.ACTION_UP) { 6869 // LONG_PRESS_CENTER is set in common onKeyDown 6870 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6871 mTrackballDown = false; 6872 mTrackballUpTime = time; 6873 if (mSelectingText) { 6874 copySelection(); 6875 selectionDone(); 6876 return true; // discard press if copy in progress 6877 } 6878 if (DebugFlags.WEB_VIEW) { 6879 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6880 + " time=" + time 6881 ); 6882 } 6883 return false; // let common code in onKeyUp at it 6884 } 6885 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6886 AccessibilityManager.getInstance(mContext).isEnabled()) { 6887 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6888 return false; 6889 } 6890 if (mTrackballDown) { 6891 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6892 return true; // discard move if trackball is down 6893 } 6894 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6895 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6896 return true; 6897 } 6898 // TODO: alternatively we can do panning as touch does 6899 switchOutDrawHistory(); 6900 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6901 if (DebugFlags.WEB_VIEW) { 6902 Log.v(LOGTAG, "onTrackballEvent time=" 6903 + time + " last=" + mTrackballLastTime); 6904 } 6905 mTrackballFirstTime = time; 6906 mTrackballXMove = mTrackballYMove = 0; 6907 } 6908 mTrackballLastTime = time; 6909 if (DebugFlags.WEB_VIEW) { 6910 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6911 } 6912 mTrackballRemainsX += ev.getX(); 6913 mTrackballRemainsY += ev.getY(); 6914 doTrackball(time, ev.getMetaState()); 6915 return true; 6916 } 6917 6918 private int scaleTrackballX(float xRate, int width) { 6919 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6920 int nextXMove = xMove; 6921 if (xMove > 0) { 6922 if (xMove > mTrackballXMove) { 6923 xMove -= mTrackballXMove; 6924 } 6925 } else if (xMove < mTrackballXMove) { 6926 xMove -= mTrackballXMove; 6927 } 6928 mTrackballXMove = nextXMove; 6929 return xMove; 6930 } 6931 6932 private int scaleTrackballY(float yRate, int height) { 6933 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6934 int nextYMove = yMove; 6935 if (yMove > 0) { 6936 if (yMove > mTrackballYMove) { 6937 yMove -= mTrackballYMove; 6938 } 6939 } else if (yMove < mTrackballYMove) { 6940 yMove -= mTrackballYMove; 6941 } 6942 mTrackballYMove = nextYMove; 6943 return yMove; 6944 } 6945 6946 private int keyCodeToSoundsEffect(int keyCode) { 6947 switch(keyCode) { 6948 case KeyEvent.KEYCODE_DPAD_UP: 6949 return SoundEffectConstants.NAVIGATION_UP; 6950 case KeyEvent.KEYCODE_DPAD_RIGHT: 6951 return SoundEffectConstants.NAVIGATION_RIGHT; 6952 case KeyEvent.KEYCODE_DPAD_DOWN: 6953 return SoundEffectConstants.NAVIGATION_DOWN; 6954 case KeyEvent.KEYCODE_DPAD_LEFT: 6955 return SoundEffectConstants.NAVIGATION_LEFT; 6956 } 6957 return 0; 6958 } 6959 6960 private void doTrackball(long time, int metaState) { 6961 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6962 if (elapsed == 0) { 6963 elapsed = TRACKBALL_TIMEOUT; 6964 } 6965 float xRate = mTrackballRemainsX * 1000 / elapsed; 6966 float yRate = mTrackballRemainsY * 1000 / elapsed; 6967 int viewWidth = getViewWidth(); 6968 int viewHeight = getViewHeight(); 6969 float ax = Math.abs(xRate); 6970 float ay = Math.abs(yRate); 6971 float maxA = Math.max(ax, ay); 6972 if (DebugFlags.WEB_VIEW) { 6973 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6974 + " xRate=" + xRate 6975 + " yRate=" + yRate 6976 + " mTrackballRemainsX=" + mTrackballRemainsX 6977 + " mTrackballRemainsY=" + mTrackballRemainsY); 6978 } 6979 int width = mContentWidth - viewWidth; 6980 int height = mContentHeight - viewHeight; 6981 if (width < 0) width = 0; 6982 if (height < 0) height = 0; 6983 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6984 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6985 maxA = Math.max(ax, ay); 6986 int count = Math.max(0, (int) maxA); 6987 int oldScrollX = getScrollX(); 6988 int oldScrollY = getScrollY(); 6989 if (count > 0) { 6990 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6991 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6992 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6993 KeyEvent.KEYCODE_DPAD_RIGHT; 6994 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6995 if (DebugFlags.WEB_VIEW) { 6996 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6997 + " count=" + count 6998 + " mTrackballRemainsX=" + mTrackballRemainsX 6999 + " mTrackballRemainsY=" + mTrackballRemainsY); 7000 } 7001 if (mNativeClass != 0) { 7002 for (int i = 0; i < count; i++) { 7003 letPageHandleNavKey(selectKeyCode, time, true, metaState); 7004 } 7005 letPageHandleNavKey(selectKeyCode, time, false, metaState); 7006 } 7007 mTrackballRemainsX = mTrackballRemainsY = 0; 7008 } 7009 if (count >= TRACKBALL_SCROLL_COUNT) { 7010 int xMove = scaleTrackballX(xRate, width); 7011 int yMove = scaleTrackballY(yRate, height); 7012 if (DebugFlags.WEB_VIEW) { 7013 Log.v(LOGTAG, "doTrackball pinScrollBy" 7014 + " count=" + count 7015 + " xMove=" + xMove + " yMove=" + yMove 7016 + " mScrollX-oldScrollX=" + (getScrollX()-oldScrollX) 7017 + " mScrollY-oldScrollY=" + (getScrollY()-oldScrollY) 7018 ); 7019 } 7020 if (Math.abs(getScrollX() - oldScrollX) > Math.abs(xMove)) { 7021 xMove = 0; 7022 } 7023 if (Math.abs(getScrollY() - oldScrollY) > Math.abs(yMove)) { 7024 yMove = 0; 7025 } 7026 if (xMove != 0 || yMove != 0) { 7027 pinScrollBy(xMove, yMove, true, 0); 7028 } 7029 } 7030 } 7031 7032 /** 7033 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 7034 * @return Maximum horizontal scroll position within real content 7035 */ 7036 int computeMaxScrollX() { 7037 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 7038 } 7039 7040 /** 7041 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 7042 * @return Maximum vertical scroll position within real content 7043 */ 7044 int computeMaxScrollY() { 7045 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 7046 - getViewHeightWithTitle(), 0); 7047 } 7048 7049 boolean updateScrollCoordinates(int x, int y) { 7050 int oldX = getScrollX(); 7051 int oldY = getScrollY(); 7052 setScrollXRaw(x); 7053 setScrollYRaw(y); 7054 if (oldX != getScrollX() || oldY != getScrollY()) { 7055 mWebViewPrivate.onScrollChanged(getScrollX(), getScrollY(), oldX, oldY); 7056 return true; 7057 } else { 7058 return false; 7059 } 7060 } 7061 7062 public void flingScroll(int vx, int vy) { 7063 checkThread(); 7064 mScroller.fling(getScrollX(), getScrollY(), vx, vy, 0, computeMaxScrollX(), 0, 7065 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 7066 invalidate(); 7067 } 7068 7069 private void doFling() { 7070 if (mVelocityTracker == null) { 7071 return; 7072 } 7073 int maxX = computeMaxScrollX(); 7074 int maxY = computeMaxScrollY(); 7075 7076 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 7077 int vx = (int) mVelocityTracker.getXVelocity(); 7078 int vy = (int) mVelocityTracker.getYVelocity(); 7079 7080 int scrollX = getScrollX(); 7081 int scrollY = getScrollY(); 7082 int overscrollDistance = mOverscrollDistance; 7083 int overflingDistance = mOverflingDistance; 7084 7085 // Use the layer's scroll data if applicable. 7086 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 7087 scrollX = mScrollingLayerRect.left; 7088 scrollY = mScrollingLayerRect.top; 7089 maxX = mScrollingLayerRect.right; 7090 maxY = mScrollingLayerRect.bottom; 7091 // No overscrolling for layers. 7092 overscrollDistance = overflingDistance = 0; 7093 } 7094 7095 if (mSnapScrollMode != SNAP_NONE) { 7096 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 7097 vy = 0; 7098 } else { 7099 vx = 0; 7100 } 7101 } 7102 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 7103 WebViewCore.resumePriority(); 7104 if (!mSelectingText) { 7105 WebViewCore.resumeUpdatePicture(mWebViewCore); 7106 } 7107 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 7108 invalidate(); 7109 } 7110 return; 7111 } 7112 float currentVelocity = mScroller.getCurrVelocity(); 7113 float velocity = (float) Math.hypot(vx, vy); 7114 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 7115 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 7116 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 7117 - Math.atan2(vy, vx))); 7118 final float circle = (float) (Math.PI) * 2.0f; 7119 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 7120 vx += currentVelocity * mLastVelX / mLastVelocity; 7121 vy += currentVelocity * mLastVelY / mLastVelocity; 7122 velocity = (float) Math.hypot(vx, vy); 7123 if (DebugFlags.WEB_VIEW) { 7124 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 7125 } 7126 } else if (DebugFlags.WEB_VIEW) { 7127 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 7128 } 7129 } else if (DebugFlags.WEB_VIEW) { 7130 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 7131 + " current=" + currentVelocity 7132 + " vx=" + vx + " vy=" + vy 7133 + " maxX=" + maxX + " maxY=" + maxY 7134 + " scrollX=" + scrollX + " scrollY=" + scrollY 7135 + " layer=" + mCurrentScrollingLayerId); 7136 } 7137 7138 // Allow sloppy flings without overscrolling at the edges. 7139 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 7140 vx = 0; 7141 } 7142 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 7143 vy = 0; 7144 } 7145 7146 if (overscrollDistance < overflingDistance) { 7147 if ((vx > 0 && scrollX == -overscrollDistance) || 7148 (vx < 0 && scrollX == maxX + overscrollDistance)) { 7149 vx = 0; 7150 } 7151 if ((vy > 0 && scrollY == -overscrollDistance) || 7152 (vy < 0 && scrollY == maxY + overscrollDistance)) { 7153 vy = 0; 7154 } 7155 } 7156 7157 mLastVelX = vx; 7158 mLastVelY = vy; 7159 mLastVelocity = velocity; 7160 7161 // no horizontal overscroll if the content just fits 7162 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 7163 maxX == 0 ? 0 : overflingDistance, overflingDistance); 7164 // Duration is calculated based on velocity. With range boundaries and overscroll 7165 // we may not know how long the final animation will take. (Hence the deprecation 7166 // warning on the call below.) It's not a big deal for scroll bars but if webcore 7167 // resumes during this effect we will take a performance hit. See computeScroll; 7168 // we resume webcore there when the animation is finished. 7169 final int time = mScroller.getDuration(); 7170 7171 // Suppress scrollbars for layer scrolling. 7172 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 7173 mWebViewPrivate.awakenScrollBars(time); 7174 } 7175 7176 invalidate(); 7177 } 7178 7179 /** 7180 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 7181 * in charge of installing this view to the view hierarchy. This view will 7182 * become visible when the user starts scrolling via touch and fade away if 7183 * the user does not interact with it. 7184 * <p/> 7185 * API version 3 introduces a built-in zoom mechanism that is shown 7186 * automatically by the MapView. This is the preferred approach for 7187 * showing the zoom UI. 7188 * 7189 * @deprecated The built-in zoom mechanism is preferred, see 7190 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 7191 */ 7192 @Deprecated 7193 public View getZoomControls() { 7194 checkThread(); 7195 if (!getSettings().supportZoom()) { 7196 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7197 return null; 7198 } 7199 return mZoomManager.getExternalZoomPicker(); 7200 } 7201 7202 void dismissZoomControl() { 7203 mZoomManager.dismissZoomPicker(); 7204 } 7205 7206 float getDefaultZoomScale() { 7207 return mZoomManager.getDefaultScale(); 7208 } 7209 7210 /** 7211 * Return the overview scale of the WebView 7212 * @return The overview scale. 7213 */ 7214 float getZoomOverviewScale() { 7215 return mZoomManager.getZoomOverviewScale(); 7216 } 7217 7218 /** 7219 * @return TRUE if the WebView can be zoomed in. 7220 */ 7221 public boolean canZoomIn() { 7222 checkThread(); 7223 return mZoomManager.canZoomIn(); 7224 } 7225 7226 /** 7227 * @return TRUE if the WebView can be zoomed out. 7228 */ 7229 public boolean canZoomOut() { 7230 checkThread(); 7231 return mZoomManager.canZoomOut(); 7232 } 7233 7234 /** 7235 * Perform zoom in in the webview 7236 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7237 */ 7238 public boolean zoomIn() { 7239 checkThread(); 7240 return mZoomManager.zoomIn(); 7241 } 7242 7243 /** 7244 * Perform zoom out in the webview 7245 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7246 */ 7247 public boolean zoomOut() { 7248 checkThread(); 7249 return mZoomManager.zoomOut(); 7250 } 7251 7252 private void doShortPress() { 7253 if (mNativeClass == 0) { 7254 return; 7255 } 7256 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7257 return; 7258 } 7259 mTouchMode = TOUCH_DONE_MODE; 7260 switchOutDrawHistory(); 7261 if (!mTouchHighlightRegion.isEmpty()) { 7262 // set mTouchHighlightRequested to 0 to cause an immediate 7263 // drawing of the touch rings 7264 mTouchHighlightRequested = 0; 7265 mWebView.invalidate(mTouchHighlightRegion.getBounds()); 7266 mPrivateHandler.postDelayed(new Runnable() { 7267 @Override 7268 public void run() { 7269 removeTouchHighlight(); 7270 } 7271 }, ViewConfiguration.getPressedStateDuration()); 7272 } 7273 if (mFocusedNode != null && mFocusedNode.mIntentUrl != null) { 7274 mWebView.playSoundEffect(SoundEffectConstants.CLICK); 7275 overrideLoading(mFocusedNode.mIntentUrl); 7276 } else { 7277 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7278 // use "0" as generation id to inform WebKit to use the same x/y as 7279 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7280 touchUpData.mMoveGeneration = 0; 7281 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7282 } 7283 } 7284 7285 void sendPluginDrawMsg() { 7286 mWebViewCore.sendMessage(EventHub.PLUGIN_SURFACE_READY); 7287 } 7288 7289 /* 7290 * Return true if the rect (e.g. plugin) is fully visible and maximized 7291 * inside the WebView. 7292 */ 7293 boolean isRectFitOnScreen(Rect rect) { 7294 final int rectWidth = rect.width(); 7295 final int rectHeight = rect.height(); 7296 final int viewWidth = getViewWidth(); 7297 final int viewHeight = getViewHeightWithTitle(); 7298 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7299 scale = mZoomManager.computeScaleWithLimits(scale); 7300 return !mZoomManager.willScaleTriggerZoom(scale) 7301 && contentToViewX(rect.left) >= getScrollX() 7302 && contentToViewX(rect.right) <= getScrollX() + viewWidth 7303 && contentToViewY(rect.top) >= getScrollY() 7304 && contentToViewY(rect.bottom) <= getScrollY() + viewHeight; 7305 } 7306 7307 /* 7308 * Maximize and center the rectangle, specified in the document coordinate 7309 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7310 * animated scroll to center it. If the zoom needs to be changed, find the 7311 * zoom center and do a smooth zoom transition. The rect is in document 7312 * coordinates 7313 */ 7314 void centerFitRect(Rect rect) { 7315 final int rectWidth = rect.width(); 7316 final int rectHeight = rect.height(); 7317 final int viewWidth = getViewWidth(); 7318 final int viewHeight = getViewHeightWithTitle(); 7319 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7320 / rectHeight); 7321 scale = mZoomManager.computeScaleWithLimits(scale); 7322 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7323 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7324 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7325 true, 0); 7326 } else { 7327 float actualScale = mZoomManager.getScale(); 7328 float oldScreenX = rect.left * actualScale - getScrollX(); 7329 float rectViewX = rect.left * scale; 7330 float rectViewWidth = rectWidth * scale; 7331 float newMaxWidth = mContentWidth * scale; 7332 float newScreenX = (viewWidth - rectViewWidth) / 2; 7333 // pin the newX to the WebView 7334 if (newScreenX > rectViewX) { 7335 newScreenX = rectViewX; 7336 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7337 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7338 } 7339 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7340 / (scale - actualScale); 7341 float oldScreenY = rect.top * actualScale + getTitleHeight() 7342 - getScrollY(); 7343 float rectViewY = rect.top * scale + getTitleHeight(); 7344 float rectViewHeight = rectHeight * scale; 7345 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7346 float newScreenY = (viewHeight - rectViewHeight) / 2; 7347 // pin the newY to the WebView 7348 if (newScreenY > rectViewY) { 7349 newScreenY = rectViewY; 7350 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7351 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7352 } 7353 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7354 / (scale - actualScale); 7355 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7356 mZoomManager.startZoomAnimation(scale, false); 7357 } 7358 } 7359 7360 // Called by JNI to handle a touch on a node representing an email address, 7361 // address, or phone number 7362 private void overrideLoading(String url) { 7363 mCallbackProxy.uiOverrideUrlLoading(url); 7364 } 7365 7366 @Override 7367 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7368 // FIXME: If a subwindow is showing find, and the user touches the 7369 // background window, it can steal focus. 7370 if (mFindIsUp) return false; 7371 boolean result = false; 7372 result = mWebViewPrivate.super_requestFocus(direction, previouslyFocusedRect); 7373 if (mWebViewCore.getSettings().getNeedInitialFocus() && !mWebView.isInTouchMode()) { 7374 // For cases such as GMail, where we gain focus from a direction, 7375 // we want to move to the first available link. 7376 // FIXME: If there are no visible links, we may not want to 7377 int fakeKeyDirection = 0; 7378 switch(direction) { 7379 case View.FOCUS_UP: 7380 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7381 break; 7382 case View.FOCUS_DOWN: 7383 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7384 break; 7385 case View.FOCUS_LEFT: 7386 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7387 break; 7388 case View.FOCUS_RIGHT: 7389 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7390 break; 7391 default: 7392 return result; 7393 } 7394 // TODO: Send initial focus request to webkit (b/6108927) 7395 } 7396 return result; 7397 } 7398 7399 @Override 7400 public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7401 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7402 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7403 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7404 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7405 7406 int measuredHeight = heightSize; 7407 int measuredWidth = widthSize; 7408 7409 // Grab the content size from WebViewCore. 7410 int contentHeight = contentToViewDimension(mContentHeight); 7411 int contentWidth = contentToViewDimension(mContentWidth); 7412 7413// Log.d(LOGTAG, "------- measure " + heightMode); 7414 7415 if (heightMode != MeasureSpec.EXACTLY) { 7416 mHeightCanMeasure = true; 7417 measuredHeight = contentHeight; 7418 if (heightMode == MeasureSpec.AT_MOST) { 7419 // If we are larger than the AT_MOST height, then our height can 7420 // no longer be measured and we should scroll internally. 7421 if (measuredHeight > heightSize) { 7422 measuredHeight = heightSize; 7423 mHeightCanMeasure = false; 7424 measuredHeight |= View.MEASURED_STATE_TOO_SMALL; 7425 } 7426 } 7427 } else { 7428 mHeightCanMeasure = false; 7429 } 7430 if (mNativeClass != 0) { 7431 nativeSetHeightCanMeasure(mHeightCanMeasure); 7432 } 7433 // For the width, always use the given size unless unspecified. 7434 if (widthMode == MeasureSpec.UNSPECIFIED) { 7435 mWidthCanMeasure = true; 7436 measuredWidth = contentWidth; 7437 } else { 7438 if (measuredWidth < contentWidth) { 7439 measuredWidth |= View.MEASURED_STATE_TOO_SMALL; 7440 } 7441 mWidthCanMeasure = false; 7442 } 7443 7444 synchronized (this) { 7445 mWebViewPrivate.setMeasuredDimension(measuredWidth, measuredHeight); 7446 } 7447 } 7448 7449 @Override 7450 public boolean requestChildRectangleOnScreen(View child, 7451 Rect rect, 7452 boolean immediate) { 7453 if (mNativeClass == 0) { 7454 return false; 7455 } 7456 // don't scroll while in zoom animation. When it is done, we will adjust 7457 // the necessary components 7458 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7459 return false; 7460 } 7461 7462 rect.offset(child.getLeft() - child.getScrollX(), 7463 child.getTop() - child.getScrollY()); 7464 7465 Rect content = new Rect(viewToContentX(getScrollX()), 7466 viewToContentY(getScrollY()), 7467 viewToContentX(getScrollX() + getWidth() 7468 - mWebView.getVerticalScrollbarWidth()), 7469 viewToContentY(getScrollY() + getViewHeightWithTitle())); 7470 content = nativeSubtractLayers(content); 7471 int screenTop = contentToViewY(content.top); 7472 int screenBottom = contentToViewY(content.bottom); 7473 int height = screenBottom - screenTop; 7474 int scrollYDelta = 0; 7475 7476 if (rect.bottom > screenBottom) { 7477 int oneThirdOfScreenHeight = height / 3; 7478 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7479 // If the rectangle is too tall to fit in the bottom two thirds 7480 // of the screen, place it at the top. 7481 scrollYDelta = rect.top - screenTop; 7482 } else { 7483 // If the rectangle will still fit on screen, we want its 7484 // top to be in the top third of the screen. 7485 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7486 } 7487 } else if (rect.top < screenTop) { 7488 scrollYDelta = rect.top - screenTop; 7489 } 7490 7491 int screenLeft = contentToViewX(content.left); 7492 int screenRight = contentToViewX(content.right); 7493 int width = screenRight - screenLeft; 7494 int scrollXDelta = 0; 7495 7496 if (rect.right > screenRight && rect.left > screenLeft) { 7497 if (rect.width() > width) { 7498 scrollXDelta += (rect.left - screenLeft); 7499 } else { 7500 scrollXDelta += (rect.right - screenRight); 7501 } 7502 } else if (rect.left < screenLeft) { 7503 scrollXDelta -= (screenLeft - rect.left); 7504 } 7505 7506 if ((scrollYDelta | scrollXDelta) != 0) { 7507 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7508 } 7509 7510 return false; 7511 } 7512 7513 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7514 String replace, int newStart, int newEnd) { 7515 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7516 arg.mReplace = replace; 7517 arg.mNewStart = newStart; 7518 arg.mNewEnd = newEnd; 7519 mTextGeneration++; 7520 arg.mTextGeneration = mTextGeneration; 7521 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7522 } 7523 7524 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7525 // check if mWebViewCore has been destroyed 7526 if (mWebViewCore == null) { 7527 return; 7528 } 7529 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7530 arg.mEvent = event; 7531 arg.mCurrentText = currentText; 7532 // Increase our text generation number, and pass it to webcore thread 7533 mTextGeneration++; 7534 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7535 // WebKit's document state is not saved until about to leave the page. 7536 // To make sure the host application, like Browser, has the up to date 7537 // document state when it goes to background, we force to save the 7538 // document state. 7539 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7540 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, null, 1000); 7541 } 7542 7543 /** 7544 * @hide 7545 */ 7546 public synchronized WebViewCore getWebViewCore() { 7547 return mWebViewCore; 7548 } 7549 7550 /** 7551 * Used only by TouchEventQueue to store pending touch events. 7552 */ 7553 private static class QueuedTouch { 7554 long mSequence; 7555 MotionEvent mEvent; // Optional 7556 TouchEventData mTed; // Optional 7557 7558 QueuedTouch mNext; 7559 7560 public QueuedTouch set(TouchEventData ted) { 7561 mSequence = ted.mSequence; 7562 mTed = ted; 7563 mEvent = null; 7564 mNext = null; 7565 return this; 7566 } 7567 7568 public QueuedTouch set(MotionEvent ev, long sequence) { 7569 mEvent = MotionEvent.obtain(ev); 7570 mSequence = sequence; 7571 mTed = null; 7572 mNext = null; 7573 return this; 7574 } 7575 7576 public QueuedTouch add(QueuedTouch other) { 7577 if (other.mSequence < mSequence) { 7578 other.mNext = this; 7579 return other; 7580 } 7581 7582 QueuedTouch insertAt = this; 7583 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7584 insertAt = insertAt.mNext; 7585 } 7586 other.mNext = insertAt.mNext; 7587 insertAt.mNext = other; 7588 return this; 7589 } 7590 } 7591 7592 /** 7593 * WebView handles touch events asynchronously since some events must be passed to WebKit 7594 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7595 * of which path they take to ensure that no events are ever processed out of order 7596 * by WebView. 7597 */ 7598 private class TouchEventQueue { 7599 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7600 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7601 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7602 7603 // Events waiting to be processed. 7604 private QueuedTouch mTouchEventQueue; 7605 7606 // Known events that are waiting on a response before being enqueued. 7607 private QueuedTouch mPreQueue; 7608 7609 // Pool of QueuedTouch objects saved for later use. 7610 private QueuedTouch mQueuedTouchRecycleBin; 7611 private int mQueuedTouchRecycleCount; 7612 7613 private long mLastEventTime = Long.MAX_VALUE; 7614 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7615 7616 // milliseconds until we abandon hope of getting all of a previous gesture 7617 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 7618 7619 private QueuedTouch obtainQueuedTouch() { 7620 if (mQueuedTouchRecycleBin != null) { 7621 QueuedTouch result = mQueuedTouchRecycleBin; 7622 mQueuedTouchRecycleBin = result.mNext; 7623 mQueuedTouchRecycleCount--; 7624 return result; 7625 } 7626 return new QueuedTouch(); 7627 } 7628 7629 /** 7630 * Allow events with any currently missing sequence numbers to be skipped in processing. 7631 */ 7632 public void ignoreCurrentlyMissingEvents() { 7633 mIgnoreUntilSequence = mNextTouchSequence; 7634 7635 // Run any events we have available and complete, pre-queued or otherwise. 7636 runQueuedAndPreQueuedEvents(); 7637 } 7638 7639 private void runQueuedAndPreQueuedEvents() { 7640 QueuedTouch qd = mPreQueue; 7641 boolean fromPreQueue = true; 7642 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7643 handleQueuedTouch(qd); 7644 QueuedTouch recycleMe = qd; 7645 if (fromPreQueue) { 7646 mPreQueue = qd.mNext; 7647 } else { 7648 mTouchEventQueue = qd.mNext; 7649 } 7650 recycleQueuedTouch(recycleMe); 7651 mLastHandledTouchSequence++; 7652 7653 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 7654 long nextQueued = mTouchEventQueue != null ? 7655 mTouchEventQueue.mSequence : Long.MAX_VALUE; 7656 fromPreQueue = nextPre < nextQueued; 7657 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 7658 } 7659 } 7660 7661 /** 7662 * Add a TouchEventData to the pre-queue. 7663 * 7664 * An event in the pre-queue is an event that we know about that 7665 * has been sent to webkit, but that we haven't received back and 7666 * enqueued into the normal touch queue yet. If webkit ever times 7667 * out and we need to ignore currently missing events, we'll run 7668 * events from the pre-queue to patch the holes. 7669 * 7670 * @param ted TouchEventData to pre-queue 7671 */ 7672 public void preQueueTouchEventData(TouchEventData ted) { 7673 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 7674 if (mPreQueue == null) { 7675 mPreQueue = newTouch; 7676 } else { 7677 QueuedTouch insertionPoint = mPreQueue; 7678 while (insertionPoint.mNext != null && 7679 insertionPoint.mNext.mSequence < newTouch.mSequence) { 7680 insertionPoint = insertionPoint.mNext; 7681 } 7682 newTouch.mNext = insertionPoint.mNext; 7683 insertionPoint.mNext = newTouch; 7684 } 7685 } 7686 7687 private void recycleQueuedTouch(QueuedTouch qd) { 7688 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7689 qd.mNext = mQueuedTouchRecycleBin; 7690 mQueuedTouchRecycleBin = qd; 7691 mQueuedTouchRecycleCount++; 7692 } 7693 } 7694 7695 /** 7696 * Reset the touch event queue. This will dump any pending events 7697 * and reset the sequence numbering. 7698 */ 7699 public void reset() { 7700 mNextTouchSequence = Long.MIN_VALUE + 1; 7701 mLastHandledTouchSequence = Long.MIN_VALUE; 7702 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7703 while (mTouchEventQueue != null) { 7704 QueuedTouch recycleMe = mTouchEventQueue; 7705 mTouchEventQueue = mTouchEventQueue.mNext; 7706 recycleQueuedTouch(recycleMe); 7707 } 7708 while (mPreQueue != null) { 7709 QueuedTouch recycleMe = mPreQueue; 7710 mPreQueue = mPreQueue.mNext; 7711 recycleQueuedTouch(recycleMe); 7712 } 7713 } 7714 7715 /** 7716 * Return the next valid sequence number for tagging incoming touch events. 7717 * @return The next touch event sequence number 7718 */ 7719 public long nextTouchSequence() { 7720 return mNextTouchSequence++; 7721 } 7722 7723 /** 7724 * Enqueue a touch event in the form of TouchEventData. 7725 * The sequence number will be read from the mSequence field of the argument. 7726 * 7727 * If the touch event's sequence number is the next in line to be processed, it will 7728 * be handled before this method returns. Any subsequent events that have already 7729 * been queued will also be processed in their proper order. 7730 * 7731 * @param ted Touch data to be processed in order. 7732 * @return true if the event was processed before returning, false if it was just enqueued. 7733 */ 7734 public boolean enqueueTouchEvent(TouchEventData ted) { 7735 // Remove from the pre-queue if present 7736 QueuedTouch preQueue = mPreQueue; 7737 if (preQueue != null) { 7738 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 7739 // if it was present in the pre-queue, and removed from the pre-queue itself. 7740 if (preQueue.mSequence == ted.mSequence) { 7741 mPreQueue = preQueue.mNext; 7742 } else { 7743 QueuedTouch prev = preQueue; 7744 preQueue = null; 7745 while (prev.mNext != null) { 7746 if (prev.mNext.mSequence == ted.mSequence) { 7747 preQueue = prev.mNext; 7748 prev.mNext = preQueue.mNext; 7749 break; 7750 } else { 7751 prev = prev.mNext; 7752 } 7753 } 7754 } 7755 } 7756 7757 if (ted.mSequence < mLastHandledTouchSequence) { 7758 // Stale event and we already moved on; drop it. (Should not be common.) 7759 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 7760 " received from webcore; ignoring"); 7761 return false; 7762 } 7763 7764 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 7765 return false; 7766 } 7767 7768 // dropStaleGestures above might have fast-forwarded us to 7769 // an event we have already. 7770 runNextQueuedEvents(); 7771 7772 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 7773 if (preQueue != null) { 7774 recycleQueuedTouch(preQueue); 7775 preQueue = null; 7776 } 7777 handleQueuedTouchEventData(ted); 7778 7779 mLastHandledTouchSequence++; 7780 7781 // Do we have any more? Run them if so. 7782 runNextQueuedEvents(); 7783 } else { 7784 // Reuse the pre-queued object if we had it. 7785 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 7786 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7787 } 7788 return true; 7789 } 7790 7791 /** 7792 * Enqueue a touch event in the form of a MotionEvent from the framework. 7793 * 7794 * If the touch event's sequence number is the next in line to be processed, it will 7795 * be handled before this method returns. Any subsequent events that have already 7796 * been queued will also be processed in their proper order. 7797 * 7798 * @param ev MotionEvent to be processed in order 7799 */ 7800 public void enqueueTouchEvent(MotionEvent ev) { 7801 final long sequence = nextTouchSequence(); 7802 7803 if (dropStaleGestures(ev, sequence)) { 7804 return; 7805 } 7806 7807 // dropStaleGestures above might have fast-forwarded us to 7808 // an event we have already. 7809 runNextQueuedEvents(); 7810 7811 if (mLastHandledTouchSequence + 1 == sequence) { 7812 handleQueuedMotionEvent(ev); 7813 7814 mLastHandledTouchSequence++; 7815 7816 // Do we have any more? Run them if so. 7817 runNextQueuedEvents(); 7818 } else { 7819 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 7820 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7821 } 7822 } 7823 7824 private void runNextQueuedEvents() { 7825 QueuedTouch qd = mTouchEventQueue; 7826 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7827 handleQueuedTouch(qd); 7828 QueuedTouch recycleMe = qd; 7829 qd = qd.mNext; 7830 recycleQueuedTouch(recycleMe); 7831 mLastHandledTouchSequence++; 7832 } 7833 mTouchEventQueue = qd; 7834 } 7835 7836 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 7837 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 7838 // This is to make sure that we don't attempt to process a tap 7839 // or long press when webkit takes too long to get back to us. 7840 // The movement will be properly confirmed when we process the 7841 // enqueued event later. 7842 final int dx = Math.round(ev.getX()) - mLastTouchX; 7843 final int dy = Math.round(ev.getY()) - mLastTouchY; 7844 if (dx * dx + dy * dy > mTouchSlopSquare) { 7845 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 7846 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7847 } 7848 } 7849 7850 if (mTouchEventQueue == null) { 7851 return sequence <= mLastHandledTouchSequence; 7852 } 7853 7854 // If we have a new down event and it's been a while since the last event 7855 // we saw, catch up as best we can and keep going. 7856 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 7857 long eventTime = ev.getEventTime(); 7858 long lastHandledEventTime = mLastEventTime; 7859 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 7860 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 7861 "Catching up."); 7862 runQueuedAndPreQueuedEvents(); 7863 7864 // Drop leftovers that we truly don't have. 7865 QueuedTouch qd = mTouchEventQueue; 7866 while (qd != null && qd.mSequence < sequence) { 7867 QueuedTouch recycleMe = qd; 7868 qd = qd.mNext; 7869 recycleQueuedTouch(recycleMe); 7870 } 7871 mTouchEventQueue = qd; 7872 mLastHandledTouchSequence = sequence - 1; 7873 } 7874 } 7875 7876 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 7877 QueuedTouch qd = mTouchEventQueue; 7878 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 7879 QueuedTouch recycleMe = qd; 7880 qd = qd.mNext; 7881 recycleQueuedTouch(recycleMe); 7882 } 7883 mTouchEventQueue = qd; 7884 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 7885 } 7886 7887 if (mPreQueue != null) { 7888 // Drop stale prequeued events 7889 QueuedTouch qd = mPreQueue; 7890 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 7891 QueuedTouch recycleMe = qd; 7892 qd = qd.mNext; 7893 recycleQueuedTouch(recycleMe); 7894 } 7895 mPreQueue = qd; 7896 } 7897 7898 return sequence <= mLastHandledTouchSequence; 7899 } 7900 7901 private void handleQueuedTouch(QueuedTouch qt) { 7902 if (qt.mTed != null) { 7903 handleQueuedTouchEventData(qt.mTed); 7904 } else { 7905 handleQueuedMotionEvent(qt.mEvent); 7906 qt.mEvent.recycle(); 7907 } 7908 } 7909 7910 private void handleQueuedMotionEvent(MotionEvent ev) { 7911 mLastEventTime = ev.getEventTime(); 7912 int action = ev.getActionMasked(); 7913 if (ev.getPointerCount() > 1) { // Multi-touch 7914 handleMultiTouchInWebView(ev); 7915 } else { 7916 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 7917 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 7918 // ScaleGestureDetector needs a consistent event stream to operate properly. 7919 // It won't take any action with fewer than two pointers, but it needs to 7920 // update internal bookkeeping state. 7921 detector.onTouchEvent(ev); 7922 } 7923 7924 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 7925 } 7926 } 7927 7928 private void handleQueuedTouchEventData(TouchEventData ted) { 7929 if (ted.mMotionEvent != null) { 7930 mLastEventTime = ted.mMotionEvent.getEventTime(); 7931 } 7932 if (!ted.mReprocess) { 7933 if (ted.mAction == MotionEvent.ACTION_DOWN 7934 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7935 // if prevent default is called from WebCore, UI 7936 // will not handle the rest of the touch events any 7937 // more. 7938 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7939 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7940 } else if (ted.mAction == MotionEvent.ACTION_MOVE 7941 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7942 // the return for the first ACTION_MOVE will decide 7943 // whether UI will handle touch or not. Currently no 7944 // support for alternating prevent default 7945 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7946 : PREVENT_DEFAULT_NO; 7947 } 7948 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7949 mTouchHighlightRegion.setEmpty(); 7950 } 7951 } else { 7952 if (ted.mPoints.length > 1) { // multi-touch 7953 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 7954 mPreventDefault = PREVENT_DEFAULT_NO; 7955 handleMultiTouchInWebView(ted.mMotionEvent); 7956 } else { 7957 mPreventDefault = PREVENT_DEFAULT_YES; 7958 } 7959 return; 7960 } 7961 7962 // prevent default is not called in WebCore, so the 7963 // message needs to be reprocessed in UI 7964 if (!ted.mNativeResult) { 7965 // Following is for single touch. 7966 switch (ted.mAction) { 7967 case MotionEvent.ACTION_DOWN: 7968 mLastDeferTouchX = ted.mPointsInView[0].x; 7969 mLastDeferTouchY = ted.mPointsInView[0].y; 7970 mDeferTouchMode = TOUCH_INIT_MODE; 7971 break; 7972 case MotionEvent.ACTION_MOVE: { 7973 // no snapping in defer process 7974 int x = ted.mPointsInView[0].x; 7975 int y = ted.mPointsInView[0].y; 7976 7977 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7978 mDeferTouchMode = TOUCH_DRAG_MODE; 7979 mLastDeferTouchX = x; 7980 mLastDeferTouchY = y; 7981 startScrollingLayer(x, y); 7982 startDrag(); 7983 } 7984 int deltaX = pinLocX((int) (getScrollX() 7985 + mLastDeferTouchX - x)) 7986 - getScrollX(); 7987 int deltaY = pinLocY((int) (getScrollY() 7988 + mLastDeferTouchY - y)) 7989 - getScrollY(); 7990 doDrag(deltaX, deltaY); 7991 if (deltaX != 0) mLastDeferTouchX = x; 7992 if (deltaY != 0) mLastDeferTouchY = y; 7993 break; 7994 } 7995 case MotionEvent.ACTION_UP: 7996 case MotionEvent.ACTION_CANCEL: 7997 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7998 // no fling in defer process 7999 mScroller.springBack(getScrollX(), getScrollY(), 0, 8000 computeMaxScrollX(), 0, 8001 computeMaxScrollY()); 8002 invalidate(); 8003 WebViewCore.resumePriority(); 8004 WebViewCore.resumeUpdatePicture(mWebViewCore); 8005 } 8006 mDeferTouchMode = TOUCH_DONE_MODE; 8007 break; 8008 case WebViewCore.ACTION_DOUBLETAP: 8009 // doDoubleTap() needs mLastTouchX/Y as anchor 8010 mLastDeferTouchX = ted.mPointsInView[0].x; 8011 mLastDeferTouchY = ted.mPointsInView[0].y; 8012 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 8013 mDeferTouchMode = TOUCH_DONE_MODE; 8014 break; 8015 case WebViewCore.ACTION_LONGPRESS: 8016 HitTestResult hitTest = getHitTestResult(); 8017 if (hitTest != null && hitTest.getType() 8018 != HitTestResult.UNKNOWN_TYPE) { 8019 performLongClick(); 8020 } 8021 mDeferTouchMode = TOUCH_DONE_MODE; 8022 break; 8023 } 8024 } 8025 } 8026 } 8027 } 8028 8029 //------------------------------------------------------------------------- 8030 // Methods can be called from a separate thread, like WebViewCore 8031 // If it needs to call the View system, it has to send message. 8032 //------------------------------------------------------------------------- 8033 8034 /** 8035 * General handler to receive message coming from webkit thread 8036 */ 8037 class PrivateHandler extends Handler { 8038 @Override 8039 public void handleMessage(Message msg) { 8040 // exclude INVAL_RECT_MSG_ID since it is frequently output 8041 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 8042 if (msg.what >= FIRST_PRIVATE_MSG_ID 8043 && msg.what <= LAST_PRIVATE_MSG_ID) { 8044 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 8045 - FIRST_PRIVATE_MSG_ID]); 8046 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 8047 && msg.what <= LAST_PACKAGE_MSG_ID) { 8048 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 8049 - FIRST_PACKAGE_MSG_ID]); 8050 } else { 8051 Log.v(LOGTAG, Integer.toString(msg.what)); 8052 } 8053 } 8054 if (mWebViewCore == null) { 8055 // after WebView's destroy() is called, skip handling messages. 8056 return; 8057 } 8058 if (mBlockWebkitViewMessages 8059 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 8060 // Blocking messages from webkit 8061 return; 8062 } 8063 switch (msg.what) { 8064 case REMEMBER_PASSWORD: { 8065 mDatabase.setUsernamePassword( 8066 msg.getData().getString("host"), 8067 msg.getData().getString("username"), 8068 msg.getData().getString("password")); 8069 ((Message) msg.obj).sendToTarget(); 8070 break; 8071 } 8072 case NEVER_REMEMBER_PASSWORD: { 8073 mDatabase.setUsernamePassword( 8074 msg.getData().getString("host"), null, null); 8075 ((Message) msg.obj).sendToTarget(); 8076 break; 8077 } 8078 case PREVENT_DEFAULT_TIMEOUT: { 8079 // if timeout happens, cancel it so that it won't block UI 8080 // to continue handling touch events 8081 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8082 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8083 || (msg.arg1 == MotionEvent.ACTION_MOVE 8084 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8085 cancelWebCoreTouchEvent( 8086 viewToContentX(mLastTouchX + getScrollX()), 8087 viewToContentY(mLastTouchY + getScrollY()), 8088 true); 8089 } 8090 break; 8091 } 8092 case SCROLL_SELECT_TEXT: { 8093 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8094 mSentAutoScrollMessage = false; 8095 break; 8096 } 8097 if (mCurrentScrollingLayerId == 0) { 8098 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8099 } else { 8100 scrollLayerTo(mScrollingLayerRect.left + mAutoScrollX, 8101 mScrollingLayerRect.top + mAutoScrollY); 8102 } 8103 sendEmptyMessageDelayed( 8104 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8105 break; 8106 } 8107 case SWITCH_TO_SHORTPRESS: { 8108 if (mTouchMode == TOUCH_INIT_MODE) { 8109 mTouchMode = TOUCH_SHORTPRESS_MODE; 8110 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8111 mTouchMode = TOUCH_DONE_MODE; 8112 } 8113 break; 8114 } 8115 case SWITCH_TO_LONGPRESS: { 8116 removeTouchHighlight(); 8117 if (inFullScreenMode() || mDeferTouchProcess) { 8118 TouchEventData ted = new TouchEventData(); 8119 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8120 ted.mIds = new int[1]; 8121 ted.mIds[0] = 0; 8122 ted.mPoints = new Point[1]; 8123 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + getScrollX()), 8124 viewToContentY(mLastTouchY + getScrollY())); 8125 ted.mPointsInView = new Point[1]; 8126 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8127 // metaState for long press is tricky. Should it be the 8128 // state when the press started or when the press was 8129 // released? Or some intermediary key state? For 8130 // simplicity for now, we don't set it. 8131 ted.mMetaState = 0; 8132 ted.mReprocess = mDeferTouchProcess; 8133 ted.mNativeLayer = nativeScrollableLayer( 8134 ted.mPoints[0].x, ted.mPoints[0].y, 8135 ted.mNativeLayerRect, null); 8136 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8137 mTouchEventQueue.preQueueTouchEventData(ted); 8138 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8139 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8140 mTouchMode = TOUCH_DONE_MODE; 8141 performLongClick(); 8142 } 8143 break; 8144 } 8145 case RELEASE_SINGLE_TAP: { 8146 doShortPress(); 8147 break; 8148 } 8149 case SCROLL_TO_MSG_ID: { 8150 // arg1 = animate, arg2 = onlyIfImeIsShowing 8151 // obj = Point(x, y) 8152 if (msg.arg2 == 1) { 8153 // This scroll is intended to bring the textfield into 8154 // view, but is only necessary if the IME is showing 8155 InputMethodManager imm = InputMethodManager.peekInstance(); 8156 if (imm == null || !imm.isAcceptingText() 8157 || !imm.isActive(mWebView)) { 8158 break; 8159 } 8160 } 8161 final Point p = (Point) msg.obj; 8162 if (msg.arg1 == 1) { 8163 spawnContentScrollTo(p.x, p.y); 8164 } else { 8165 setContentScrollTo(p.x, p.y); 8166 } 8167 break; 8168 } 8169 case UPDATE_ZOOM_RANGE: { 8170 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8171 // mScrollX contains the new minPrefWidth 8172 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8173 break; 8174 } 8175 case UPDATE_ZOOM_DENSITY: { 8176 final float density = (Float) msg.obj; 8177 mZoomManager.updateDefaultZoomDensity(density); 8178 break; 8179 } 8180 case REPLACE_BASE_CONTENT: { 8181 nativeReplaceBaseContent(msg.arg1); 8182 break; 8183 } 8184 case NEW_PICTURE_MSG_ID: { 8185 // called for new content 8186 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8187 setNewPicture(draw, true); 8188 break; 8189 } 8190 case WEBCORE_INITIALIZED_MSG_ID: 8191 // nativeCreate sets mNativeClass to a non-zero value 8192 String drawableDir = BrowserFrame.getRawResFilename( 8193 BrowserFrame.DRAWABLEDIR, mContext); 8194 WindowManager windowManager = 8195 (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE); 8196 Display display = windowManager.getDefaultDisplay(); 8197 nativeCreate(msg.arg1, drawableDir, 8198 ActivityManager.isHighEndGfx(display)); 8199 if (mDelaySetPicture != null) { 8200 setNewPicture(mDelaySetPicture, true); 8201 mDelaySetPicture = null; 8202 } 8203 if (mIsPaused) { 8204 nativeSetPauseDrawing(mNativeClass, true); 8205 } 8206 break; 8207 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8208 // Make sure that the textfield is currently focused 8209 // and representing the same node as the pointer. 8210 if (msg.arg2 == mTextGeneration) { 8211 String text = (String) msg.obj; 8212 if (null == text) { 8213 text = ""; 8214 } 8215 if (mInputConnection != null && 8216 mFieldPointer == msg.arg1) { 8217 mInputConnection.setTextAndKeepSelection(text); 8218 } 8219 } 8220 break; 8221 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8222 displaySoftKeyboard(true); 8223 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8224 case UPDATE_TEXT_SELECTION_MSG_ID: 8225 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8226 (WebViewCore.TextSelectionData) msg.obj); 8227 break; 8228 case FORM_DID_BLUR: 8229 // TODO: Figure out if this is needed for something (b/6111763) 8230 break; 8231 case TAKE_FOCUS: 8232 int direction = msg.arg1; 8233 View focusSearch = mWebView.focusSearch(direction); 8234 if (focusSearch != null && focusSearch != mWebView) { 8235 focusSearch.requestFocus(); 8236 } 8237 break; 8238 case CLEAR_TEXT_ENTRY: 8239 hideSoftKeyboard(); 8240 break; 8241 case INVAL_RECT_MSG_ID: { 8242 Rect r = (Rect)msg.obj; 8243 if (r == null) { 8244 invalidate(); 8245 } else { 8246 // we need to scale r from content into view coords, 8247 // which viewInvalidate() does for us 8248 viewInvalidate(r.left, r.top, r.right, r.bottom); 8249 } 8250 break; 8251 } 8252 8253 case LONG_PRESS_CENTER: 8254 // as this is shared by keydown and trackballdown, reset all 8255 // the states 8256 mGotCenterDown = false; 8257 mTrackballDown = false; 8258 performLongClick(); 8259 break; 8260 8261 case WEBCORE_NEED_TOUCH_EVENTS: 8262 mForwardTouchEvents = (msg.arg1 != 0); 8263 break; 8264 8265 case PREVENT_TOUCH_ID: 8266 if (inFullScreenMode()) { 8267 break; 8268 } 8269 TouchEventData ted = (TouchEventData) msg.obj; 8270 8271 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8272 // WebCore is responding to us; remove pending timeout. 8273 // It will be re-posted when needed. 8274 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8275 } 8276 break; 8277 8278 case REQUEST_KEYBOARD: 8279 if (msg.arg1 == 0) { 8280 hideSoftKeyboard(); 8281 } else { 8282 displaySoftKeyboard(false); 8283 } 8284 break; 8285 8286 case DRAG_HELD_MOTIONLESS: 8287 mHeldMotionless = MOTIONLESS_TRUE; 8288 invalidate(); 8289 // fall through to keep scrollbars awake 8290 8291 case AWAKEN_SCROLL_BARS: 8292 if (mTouchMode == TOUCH_DRAG_MODE 8293 && mHeldMotionless == MOTIONLESS_TRUE) { 8294 mWebViewPrivate.awakenScrollBars(ViewConfiguration 8295 .getScrollDefaultDelay(), false); 8296 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8297 .obtainMessage(AWAKEN_SCROLL_BARS), 8298 ViewConfiguration.getScrollDefaultDelay()); 8299 } 8300 break; 8301 8302 case SCREEN_ON: 8303 mWebView.setKeepScreenOn(msg.arg1 == 1); 8304 break; 8305 8306 case ENTER_FULLSCREEN_VIDEO: 8307 int layerId = msg.arg1; 8308 8309 String url = (String) msg.obj; 8310 if (mHTML5VideoViewProxy != null) { 8311 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8312 } 8313 break; 8314 8315 case EXIT_FULLSCREEN_VIDEO: 8316 if (mHTML5VideoViewProxy != null) { 8317 mHTML5VideoViewProxy.exitFullScreenVideo(); 8318 } 8319 break; 8320 8321 case SHOW_FULLSCREEN: { 8322 View view = (View) msg.obj; 8323 int orientation = msg.arg1; 8324 int npp = msg.arg2; 8325 8326 if (inFullScreenMode()) { 8327 Log.w(LOGTAG, "Should not have another full screen."); 8328 dismissFullScreenMode(); 8329 } 8330 mFullScreenHolder = new PluginFullScreenHolder(WebViewClassic.this, orientation, npp); 8331 mFullScreenHolder.setContentView(view); 8332 mFullScreenHolder.show(); 8333 invalidate(); 8334 8335 break; 8336 } 8337 case HIDE_FULLSCREEN: 8338 dismissFullScreenMode(); 8339 break; 8340 8341 case SHOW_RECT_MSG_ID: { 8342 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8343 int x = getScrollX(); 8344 int left = contentToViewX(data.mLeft); 8345 int width = contentToViewDimension(data.mWidth); 8346 int maxWidth = contentToViewDimension(data.mContentWidth); 8347 int viewWidth = getViewWidth(); 8348 if (width < viewWidth) { 8349 // center align 8350 x += left + width / 2 - getScrollX() - viewWidth / 2; 8351 } else { 8352 x += (int) (left + data.mXPercentInDoc * width 8353 - getScrollX() - data.mXPercentInView * viewWidth); 8354 } 8355 if (DebugFlags.WEB_VIEW) { 8356 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8357 width + ",maxWidth=" + maxWidth + 8358 ",viewWidth=" + viewWidth + ",x=" 8359 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8360 ",xPercentInView=" + data.mXPercentInView+ ")"); 8361 } 8362 // use the passing content width to cap x as the current 8363 // mContentWidth may not be updated yet 8364 x = Math.max(0, 8365 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8366 int top = contentToViewY(data.mTop); 8367 int height = contentToViewDimension(data.mHeight); 8368 int maxHeight = contentToViewDimension(data.mContentHeight); 8369 int viewHeight = getViewHeight(); 8370 int y = (int) (top + data.mYPercentInDoc * height - 8371 data.mYPercentInView * viewHeight); 8372 if (DebugFlags.WEB_VIEW) { 8373 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8374 height + ",maxHeight=" + maxHeight + 8375 ",viewHeight=" + viewHeight + ",y=" 8376 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8377 ",yPercentInView=" + data.mYPercentInView+ ")"); 8378 } 8379 // use the passing content height to cap y as the current 8380 // mContentHeight may not be updated yet 8381 y = Math.max(0, 8382 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8383 // We need to take into account the visible title height 8384 // when scrolling since y is an absolute view position. 8385 y = Math.max(0, y - getVisibleTitleHeightImpl()); 8386 mWebView.scrollTo(x, y); 8387 } 8388 break; 8389 8390 case CENTER_FIT_RECT: 8391 centerFitRect((Rect)msg.obj); 8392 break; 8393 8394 case SET_SCROLLBAR_MODES: 8395 mHorizontalScrollBarMode = msg.arg1; 8396 mVerticalScrollBarMode = msg.arg2; 8397 break; 8398 8399 case SELECTION_STRING_CHANGED: 8400 if (mAccessibilityInjector != null) { 8401 String selectionString = (String) msg.obj; 8402 mAccessibilityInjector.onSelectionStringChange(selectionString); 8403 } 8404 break; 8405 8406 case HIT_TEST_RESULT: 8407 WebKitHitTest hit = (WebKitHitTest) msg.obj; 8408 mFocusedNode = hit; 8409 setTouchHighlightRects(hit); 8410 setHitTestResult(hit); 8411 break; 8412 8413 case SAVE_WEBARCHIVE_FINISHED: 8414 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 8415 if (saveMessage.mCallback != null) { 8416 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 8417 } 8418 break; 8419 8420 case SET_AUTOFILLABLE: 8421 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 8422 // TODO: Support (b/6083041) 8423 break; 8424 8425 case AUTOFILL_COMPLETE: 8426 // TODO: Support (b/6083041) 8427 break; 8428 8429 case COPY_TO_CLIPBOARD: 8430 copyToClipboard((String) msg.obj); 8431 break; 8432 8433 case INIT_EDIT_FIELD: 8434 if (mInputConnection != null) { 8435 TextFieldInitData initData = (TextFieldInitData) msg.obj; 8436 mTextGeneration = 0; 8437 mFieldPointer = initData.mFieldPointer; 8438 mInputConnection.initEditorInfo(initData); 8439 mInputConnection.setTextAndKeepSelection(initData.mText); 8440 } 8441 break; 8442 8443 case REPLACE_TEXT:{ 8444 String text = (String)msg.obj; 8445 int start = msg.arg1; 8446 int end = msg.arg2; 8447 int cursorPosition = start + text.length(); 8448 replaceTextfieldText(start, end, text, 8449 cursorPosition, cursorPosition); 8450 break; 8451 } 8452 8453 case UPDATE_MATCH_COUNT: { 8454 if (mFindCallback != null) { 8455 mFindCallback.updateMatchCount(msg.arg1, msg.arg2, 8456 (String) msg.obj); 8457 } 8458 break; 8459 } 8460 case CLEAR_CARET_HANDLE: 8461 selectionDone(); 8462 break; 8463 8464 case KEY_PRESS: 8465 mWebViewCore.sendMessage(EventHub.KEY_PRESS, msg.arg1); 8466 break; 8467 8468 default: 8469 super.handleMessage(msg); 8470 break; 8471 } 8472 } 8473 } 8474 8475 private void setHitTestTypeFromUrl(String url) { 8476 String substr = null; 8477 if (url.startsWith(SCHEME_GEO)) { 8478 mInitialHitTestResult.setType(HitTestResult.GEO_TYPE); 8479 substr = url.substring(SCHEME_GEO.length()); 8480 } else if (url.startsWith(SCHEME_TEL)) { 8481 mInitialHitTestResult.setType(HitTestResult.PHONE_TYPE); 8482 substr = url.substring(SCHEME_TEL.length()); 8483 } else if (url.startsWith(SCHEME_MAILTO)) { 8484 mInitialHitTestResult.setType(HitTestResult.EMAIL_TYPE); 8485 substr = url.substring(SCHEME_MAILTO.length()); 8486 } else { 8487 mInitialHitTestResult.setType(HitTestResult.SRC_ANCHOR_TYPE); 8488 mInitialHitTestResult.setExtra(url); 8489 return; 8490 } 8491 try { 8492 mInitialHitTestResult.setExtra(URLDecoder.decode(substr, "UTF-8")); 8493 } catch (Throwable e) { 8494 Log.w(LOGTAG, "Failed to decode URL! " + substr, e); 8495 mInitialHitTestResult.setType(HitTestResult.UNKNOWN_TYPE); 8496 } 8497 } 8498 8499 private void setHitTestResult(WebKitHitTest hit) { 8500 if (hit == null) { 8501 mInitialHitTestResult = null; 8502 return; 8503 } 8504 mInitialHitTestResult = new HitTestResult(); 8505 if (hit.mLinkUrl != null) { 8506 setHitTestTypeFromUrl(hit.mLinkUrl); 8507 if (hit.mImageUrl != null 8508 && mInitialHitTestResult.getType() == HitTestResult.SRC_ANCHOR_TYPE) { 8509 mInitialHitTestResult.setType(HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 8510 mInitialHitTestResult.setExtra(hit.mImageUrl); 8511 } 8512 } else if (hit.mImageUrl != null) { 8513 mInitialHitTestResult.setType(HitTestResult.IMAGE_TYPE); 8514 mInitialHitTestResult.setExtra(hit.mImageUrl); 8515 } else if (hit.mEditable) { 8516 mInitialHitTestResult.setType(HitTestResult.EDIT_TEXT_TYPE); 8517 } else if (hit.mIntentUrl != null) { 8518 setHitTestTypeFromUrl(hit.mIntentUrl); 8519 } 8520 } 8521 8522 private boolean shouldDrawHighlightRect() { 8523 if (mFocusedNode == null || mInitialHitTestResult == null) { 8524 return false; 8525 } 8526 if (mTouchHighlightRegion.isEmpty()) { 8527 return false; 8528 } 8529 if (mFocusedNode.mHasFocus && !mWebView.isInTouchMode()) { 8530 return mDrawCursorRing && !mFocusedNode.mEditable; 8531 } 8532 if (mFocusedNode.mHasFocus && mFocusedNode.mEditable) { 8533 return false; 8534 } 8535 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 8536 if (delay < ViewConfiguration.getTapTimeout()) { 8537 Rect r = mTouchHighlightRegion.getBounds(); 8538 mWebView.postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 8539 return false; 8540 } 8541 return true; 8542 } 8543 8544 8545 private FocusTransitionDrawable mFocusTransition = null; 8546 static class FocusTransitionDrawable extends Drawable { 8547 Region mPreviousRegion; 8548 Region mNewRegion; 8549 float mProgress = 0; 8550 WebViewClassic mWebView; 8551 Paint mPaint; 8552 int mMaxAlpha; 8553 Point mTranslate; 8554 8555 public FocusTransitionDrawable(WebViewClassic view) { 8556 mWebView = view; 8557 mPaint = new Paint(mWebView.mTouchHightlightPaint); 8558 mMaxAlpha = mPaint.getAlpha(); 8559 } 8560 8561 @Override 8562 public void setColorFilter(ColorFilter cf) { 8563 } 8564 8565 @Override 8566 public void setAlpha(int alpha) { 8567 } 8568 8569 @Override 8570 public int getOpacity() { 8571 return 0; 8572 } 8573 8574 public void setProgress(float p) { 8575 mProgress = p; 8576 if (mWebView.mFocusTransition == this) { 8577 if (mProgress == 1f) 8578 mWebView.mFocusTransition = null; 8579 mWebView.invalidate(); 8580 } 8581 } 8582 8583 public float getProgress() { 8584 return mProgress; 8585 } 8586 8587 @Override 8588 public void draw(Canvas canvas) { 8589 if (mTranslate == null) { 8590 Rect bounds = mPreviousRegion.getBounds(); 8591 Point from = new Point(bounds.centerX(), bounds.centerY()); 8592 mNewRegion.getBounds(bounds); 8593 Point to = new Point(bounds.centerX(), bounds.centerY()); 8594 mTranslate = new Point(from.x - to.x, from.y - to.y); 8595 } 8596 int alpha = (int) (mProgress * mMaxAlpha); 8597 RegionIterator iter = new RegionIterator(mPreviousRegion); 8598 Rect r = new Rect(); 8599 mPaint.setAlpha(mMaxAlpha - alpha); 8600 float tx = mTranslate.x * mProgress; 8601 float ty = mTranslate.y * mProgress; 8602 int save = canvas.save(Canvas.MATRIX_SAVE_FLAG); 8603 canvas.translate(-tx, -ty); 8604 while (iter.next(r)) { 8605 canvas.drawRect(r, mPaint); 8606 } 8607 canvas.restoreToCount(save); 8608 iter = new RegionIterator(mNewRegion); 8609 r = new Rect(); 8610 mPaint.setAlpha(alpha); 8611 save = canvas.save(Canvas.MATRIX_SAVE_FLAG); 8612 tx = mTranslate.x - tx; 8613 ty = mTranslate.y - ty; 8614 canvas.translate(tx, ty); 8615 while (iter.next(r)) { 8616 canvas.drawRect(r, mPaint); 8617 } 8618 canvas.restoreToCount(save); 8619 } 8620 }; 8621 8622 private boolean shouldAnimateTo(WebKitHitTest hit) { 8623 // TODO: Don't be annoying or throw out the animation entirely 8624 return false; 8625 } 8626 8627 private void setTouchHighlightRects(WebKitHitTest hit) { 8628 FocusTransitionDrawable transition = null; 8629 if (shouldAnimateTo(hit)) { 8630 transition = new FocusTransitionDrawable(this); 8631 } 8632 Rect[] rects = hit != null ? hit.mTouchRects : null; 8633 if (!mTouchHighlightRegion.isEmpty()) { 8634 mWebView.invalidate(mTouchHighlightRegion.getBounds()); 8635 if (transition != null) { 8636 transition.mPreviousRegion = new Region(mTouchHighlightRegion); 8637 } 8638 mTouchHighlightRegion.setEmpty(); 8639 } 8640 if (rects != null) { 8641 mTouchHightlightPaint.setColor(hit.mTapHighlightColor); 8642 for (Rect rect : rects) { 8643 Rect viewRect = contentToViewRect(rect); 8644 // some sites, like stories in nytimes.com, set 8645 // mouse event handler in the top div. It is not 8646 // user friendly to highlight the div if it covers 8647 // more than half of the screen. 8648 if (viewRect.width() < getWidth() >> 1 8649 || viewRect.height() < getHeight() >> 1) { 8650 mTouchHighlightRegion.union(viewRect); 8651 } else { 8652 Log.w(LOGTAG, "Skip the huge selection rect:" 8653 + viewRect); 8654 } 8655 } 8656 mWebView.invalidate(mTouchHighlightRegion.getBounds()); 8657 if (transition != null && transition.mPreviousRegion != null) { 8658 transition.mNewRegion = new Region(mTouchHighlightRegion); 8659 mFocusTransition = transition; 8660 ObjectAnimator animator = ObjectAnimator.ofFloat( 8661 mFocusTransition, "progress", 1f); 8662 animator.start(); 8663 } 8664 } 8665 } 8666 8667 // Interface to allow the profiled WebView to hook the page swap notifications. 8668 public interface PageSwapDelegate { 8669 void onPageSwapOccurred(boolean notifyAnimationStarted); 8670 } 8671 8672 /** @hide Called by JNI when pages are swapped (only occurs with hardware 8673 * acceleration) */ 8674 protected void pageSwapCallback(boolean notifyAnimationStarted) { 8675 mWebViewCore.resumeWebKitDraw(); 8676 if (notifyAnimationStarted) { 8677 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 8678 } 8679 if (mWebView instanceof PageSwapDelegate) { 8680 // This provides a hook for ProfiledWebView to observe the tile page swaps. 8681 ((PageSwapDelegate) mWebView).onPageSwapOccurred(notifyAnimationStarted); 8682 } 8683 } 8684 8685 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 8686 if (mNativeClass == 0) { 8687 if (mDelaySetPicture != null) { 8688 throw new IllegalStateException("Tried to setNewPicture with" 8689 + " a delay picture already set! (memory leak)"); 8690 } 8691 // Not initialized yet, delay set 8692 mDelaySetPicture = draw; 8693 return; 8694 } 8695 WebViewCore.ViewState viewState = draw.mViewState; 8696 boolean isPictureAfterFirstLayout = viewState != null; 8697 8698 if (updateBaseLayer) { 8699 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 8700 getSettings().getShowVisualIndicator(), 8701 isPictureAfterFirstLayout); 8702 } 8703 final Point viewSize = draw.mViewSize; 8704 // We update the layout (i.e. request a layout from the 8705 // view system) if the last view size that we sent to 8706 // WebCore matches the view size of the picture we just 8707 // received in the fixed dimension. 8708 final boolean updateLayout = viewSize.x == mLastWidthSent 8709 && viewSize.y == mLastHeightSent; 8710 // Don't send scroll event for picture coming from webkit, 8711 // since the new picture may cause a scroll event to override 8712 // the saved history scroll position. 8713 mSendScrollEvent = false; 8714 recordNewContentSize(draw.mContentSize.x, 8715 draw.mContentSize.y, updateLayout); 8716 if (isPictureAfterFirstLayout) { 8717 // Reset the last sent data here since dealing with new page. 8718 mLastWidthSent = 0; 8719 mZoomManager.onFirstLayout(draw); 8720 int scrollX = viewState.mShouldStartScrolledRight 8721 ? getContentWidth() : viewState.mScrollX; 8722 int scrollY = viewState.mScrollY; 8723 setContentScrollTo(scrollX, scrollY); 8724 if (!mDrawHistory) { 8725 // As we are on a new page, hide the keyboard 8726 hideSoftKeyboard(); 8727 } 8728 } 8729 mSendScrollEvent = true; 8730 8731 if (DebugFlags.WEB_VIEW) { 8732 Rect b = draw.mInvalRegion.getBounds(); 8733 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 8734 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 8735 } 8736 invalidateContentRect(draw.mInvalRegion.getBounds()); 8737 8738 if (mPictureListener != null) { 8739 mPictureListener.onNewPicture(getWebView(), capturePicture()); 8740 } 8741 8742 // update the zoom information based on the new picture 8743 mZoomManager.onNewPicture(draw); 8744 8745 if (isPictureAfterFirstLayout) { 8746 mViewManager.postReadyToDrawAll(); 8747 } 8748 } 8749 8750 /** 8751 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 8752 * and UPDATE_TEXT_SELECTION_MSG_ID. 8753 */ 8754 private void updateTextSelectionFromMessage(int nodePointer, 8755 int textGeneration, WebViewCore.TextSelectionData data) { 8756 if (textGeneration == mTextGeneration) { 8757 if (mInputConnection != null && mFieldPointer == nodePointer) { 8758 mInputConnection.setSelection(data.mStart, data.mEnd); 8759 } 8760 } 8761 nativeSetTextSelection(mNativeClass, data.mSelectTextPtr); 8762 8763 if (data.mSelectTextPtr != 0 && 8764 (data.mStart != data.mEnd || 8765 (mFieldPointer == nodePointer && mFieldPointer != 0))) { 8766 mIsCaretSelection = (data.mStart == data.mEnd); 8767 if (!mSelectingText) { 8768 setupWebkitSelect(); 8769 } else if (!mSelectionStarted) { 8770 syncSelectionCursors(); 8771 } 8772 if (mIsCaretSelection) { 8773 resetCaretTimer(); 8774 } 8775 } else { 8776 selectionDone(); 8777 } 8778 invalidate(); 8779 } 8780 8781 // Class used to use a dropdown for a <select> element 8782 private class InvokeListBox implements Runnable { 8783 // Whether the listbox allows multiple selection. 8784 private boolean mMultiple; 8785 // Passed in to a list with multiple selection to tell 8786 // which items are selected. 8787 private int[] mSelectedArray; 8788 // Passed in to a list with single selection to tell 8789 // where the initial selection is. 8790 private int mSelection; 8791 8792 private Container[] mContainers; 8793 8794 // Need these to provide stable ids to my ArrayAdapter, 8795 // which normally does not have stable ids. (Bug 1250098) 8796 private class Container extends Object { 8797 /** 8798 * Possible values for mEnabled. Keep in sync with OptionStatus in 8799 * WebViewCore.cpp 8800 */ 8801 final static int OPTGROUP = -1; 8802 final static int OPTION_DISABLED = 0; 8803 final static int OPTION_ENABLED = 1; 8804 8805 String mString; 8806 int mEnabled; 8807 int mId; 8808 8809 @Override 8810 public String toString() { 8811 return mString; 8812 } 8813 } 8814 8815 /** 8816 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8817 * and allow filtering. 8818 */ 8819 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8820 public MyArrayListAdapter() { 8821 super(WebViewClassic.this.mContext, 8822 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8823 com.android.internal.R.layout.webview_select_singlechoice, 8824 mContainers); 8825 } 8826 8827 @Override 8828 public View getView(int position, View convertView, 8829 ViewGroup parent) { 8830 // Always pass in null so that we will get a new CheckedTextView 8831 // Otherwise, an item which was previously used as an <optgroup> 8832 // element (i.e. has no check), could get used as an <option> 8833 // element, which needs a checkbox/radio, but it would not have 8834 // one. 8835 convertView = super.getView(position, null, parent); 8836 Container c = item(position); 8837 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8838 // ListView does not draw dividers between disabled and 8839 // enabled elements. Use a LinearLayout to provide dividers 8840 LinearLayout layout = new LinearLayout(mContext); 8841 layout.setOrientation(LinearLayout.VERTICAL); 8842 if (position > 0) { 8843 View dividerTop = new View(mContext); 8844 dividerTop.setBackgroundResource( 8845 android.R.drawable.divider_horizontal_bright); 8846 layout.addView(dividerTop); 8847 } 8848 8849 if (Container.OPTGROUP == c.mEnabled) { 8850 // Currently select_dialog_multichoice uses CheckedTextViews. 8851 // If that changes, the class cast will no longer be valid. 8852 if (mMultiple) { 8853 Assert.assertTrue(convertView instanceof CheckedTextView); 8854 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8855 } 8856 } else { 8857 // c.mEnabled == Container.OPTION_DISABLED 8858 // Draw the disabled element in a disabled state. 8859 convertView.setEnabled(false); 8860 } 8861 8862 layout.addView(convertView); 8863 if (position < getCount() - 1) { 8864 View dividerBottom = new View(mContext); 8865 dividerBottom.setBackgroundResource( 8866 android.R.drawable.divider_horizontal_bright); 8867 layout.addView(dividerBottom); 8868 } 8869 return layout; 8870 } 8871 return convertView; 8872 } 8873 8874 @Override 8875 public boolean hasStableIds() { 8876 // AdapterView's onChanged method uses this to determine whether 8877 // to restore the old state. Return false so that the old (out 8878 // of date) state does not replace the new, valid state. 8879 return false; 8880 } 8881 8882 private Container item(int position) { 8883 if (position < 0 || position >= getCount()) { 8884 return null; 8885 } 8886 return getItem(position); 8887 } 8888 8889 @Override 8890 public long getItemId(int position) { 8891 Container item = item(position); 8892 if (item == null) { 8893 return -1; 8894 } 8895 return item.mId; 8896 } 8897 8898 @Override 8899 public boolean areAllItemsEnabled() { 8900 return false; 8901 } 8902 8903 @Override 8904 public boolean isEnabled(int position) { 8905 Container item = item(position); 8906 if (item == null) { 8907 return false; 8908 } 8909 return Container.OPTION_ENABLED == item.mEnabled; 8910 } 8911 } 8912 8913 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 8914 mMultiple = true; 8915 mSelectedArray = selected; 8916 8917 int length = array.length; 8918 mContainers = new Container[length]; 8919 for (int i = 0; i < length; i++) { 8920 mContainers[i] = new Container(); 8921 mContainers[i].mString = array[i]; 8922 mContainers[i].mEnabled = enabled[i]; 8923 mContainers[i].mId = i; 8924 } 8925 } 8926 8927 private InvokeListBox(String[] array, int[] enabled, int selection) { 8928 mSelection = selection; 8929 mMultiple = false; 8930 8931 int length = array.length; 8932 mContainers = new Container[length]; 8933 for (int i = 0; i < length; i++) { 8934 mContainers[i] = new Container(); 8935 mContainers[i].mString = array[i]; 8936 mContainers[i].mEnabled = enabled[i]; 8937 mContainers[i].mId = i; 8938 } 8939 } 8940 8941 /* 8942 * Whenever the data set changes due to filtering, this class ensures 8943 * that the checked item remains checked. 8944 */ 8945 private class SingleDataSetObserver extends DataSetObserver { 8946 private long mCheckedId; 8947 private ListView mListView; 8948 private Adapter mAdapter; 8949 8950 /* 8951 * Create a new observer. 8952 * @param id The ID of the item to keep checked. 8953 * @param l ListView for getting and clearing the checked states 8954 * @param a Adapter for getting the IDs 8955 */ 8956 public SingleDataSetObserver(long id, ListView l, Adapter a) { 8957 mCheckedId = id; 8958 mListView = l; 8959 mAdapter = a; 8960 } 8961 8962 @Override 8963 public void onChanged() { 8964 // The filter may have changed which item is checked. Find the 8965 // item that the ListView thinks is checked. 8966 int position = mListView.getCheckedItemPosition(); 8967 long id = mAdapter.getItemId(position); 8968 if (mCheckedId != id) { 8969 // Clear the ListView's idea of the checked item, since 8970 // it is incorrect 8971 mListView.clearChoices(); 8972 // Search for mCheckedId. If it is in the filtered list, 8973 // mark it as checked 8974 int count = mAdapter.getCount(); 8975 for (int i = 0; i < count; i++) { 8976 if (mAdapter.getItemId(i) == mCheckedId) { 8977 mListView.setItemChecked(i, true); 8978 break; 8979 } 8980 } 8981 } 8982 } 8983 } 8984 8985 @Override 8986 public void run() { 8987 final ListView listView = (ListView) LayoutInflater.from(mContext) 8988 .inflate(com.android.internal.R.layout.select_dialog, null); 8989 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 8990 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 8991 .setView(listView).setCancelable(true) 8992 .setInverseBackgroundForced(true); 8993 8994 if (mMultiple) { 8995 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 8996 @Override 8997 public void onClick(DialogInterface dialog, int which) { 8998 mWebViewCore.sendMessage( 8999 EventHub.LISTBOX_CHOICES, 9000 adapter.getCount(), 0, 9001 listView.getCheckedItemPositions()); 9002 }}); 9003 b.setNegativeButton(android.R.string.cancel, 9004 new DialogInterface.OnClickListener() { 9005 @Override 9006 public void onClick(DialogInterface dialog, int which) { 9007 mWebViewCore.sendMessage( 9008 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9009 }}); 9010 } 9011 mListBoxDialog = b.create(); 9012 listView.setAdapter(adapter); 9013 listView.setFocusableInTouchMode(true); 9014 // There is a bug (1250103) where the checks in a ListView with 9015 // multiple items selected are associated with the positions, not 9016 // the ids, so the items do not properly retain their checks when 9017 // filtered. Do not allow filtering on multiple lists until 9018 // that bug is fixed. 9019 9020 listView.setTextFilterEnabled(!mMultiple); 9021 if (mMultiple) { 9022 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 9023 int length = mSelectedArray.length; 9024 for (int i = 0; i < length; i++) { 9025 listView.setItemChecked(mSelectedArray[i], true); 9026 } 9027 } else { 9028 listView.setOnItemClickListener(new OnItemClickListener() { 9029 @Override 9030 public void onItemClick(AdapterView<?> parent, View v, 9031 int position, long id) { 9032 // Rather than sending the message right away, send it 9033 // after the page regains focus. 9034 mListBoxMessage = Message.obtain(null, 9035 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 9036 mListBoxDialog.dismiss(); 9037 mListBoxDialog = null; 9038 } 9039 }); 9040 if (mSelection != -1) { 9041 listView.setSelection(mSelection); 9042 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 9043 listView.setItemChecked(mSelection, true); 9044 DataSetObserver observer = new SingleDataSetObserver( 9045 adapter.getItemId(mSelection), listView, adapter); 9046 adapter.registerDataSetObserver(observer); 9047 } 9048 } 9049 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 9050 @Override 9051 public void onCancel(DialogInterface dialog) { 9052 mWebViewCore.sendMessage( 9053 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9054 mListBoxDialog = null; 9055 } 9056 }); 9057 mListBoxDialog.show(); 9058 } 9059 } 9060 9061 private Message mListBoxMessage; 9062 9063 /* 9064 * Request a dropdown menu for a listbox with multiple selection. 9065 * 9066 * @param array Labels for the listbox. 9067 * @param enabledArray State for each element in the list. See static 9068 * integers in Container class. 9069 * @param selectedArray Which positions are initally selected. 9070 */ 9071 void requestListBox(String[] array, int[] enabledArray, int[] 9072 selectedArray) { 9073 mPrivateHandler.post( 9074 new InvokeListBox(array, enabledArray, selectedArray)); 9075 } 9076 9077 /* 9078 * Request a dropdown menu for a listbox with single selection or a single 9079 * <select> element. 9080 * 9081 * @param array Labels for the listbox. 9082 * @param enabledArray State for each element in the list. See static 9083 * integers in Container class. 9084 * @param selection Which position is initally selected. 9085 */ 9086 void requestListBox(String[] array, int[] enabledArray, int selection) { 9087 mPrivateHandler.post( 9088 new InvokeListBox(array, enabledArray, selection)); 9089 } 9090 9091 private int getScaledMaxXScroll() { 9092 int width; 9093 if (mHeightCanMeasure == false) { 9094 width = getViewWidth() / 4; 9095 } else { 9096 Rect visRect = new Rect(); 9097 calcOurVisibleRect(visRect); 9098 width = visRect.width() / 2; 9099 } 9100 // FIXME the divisor should be retrieved from somewhere 9101 return viewToContentX(width); 9102 } 9103 9104 private int getScaledMaxYScroll() { 9105 int height; 9106 if (mHeightCanMeasure == false) { 9107 height = getViewHeight() / 4; 9108 } else { 9109 Rect visRect = new Rect(); 9110 calcOurVisibleRect(visRect); 9111 height = visRect.height() / 2; 9112 } 9113 // FIXME the divisor should be retrieved from somewhere 9114 // the closest thing today is hard-coded into ScrollView.java 9115 // (from ScrollView.java, line 363) int maxJump = height/2; 9116 return Math.round(height * mZoomManager.getInvScale()); 9117 } 9118 9119 /** 9120 * Called by JNI to invalidate view 9121 */ 9122 private void viewInvalidate() { 9123 invalidate(); 9124 } 9125 9126 /** 9127 * Pass the key directly to the page. This assumes that 9128 * nativePageShouldHandleShiftAndArrows() returned true. 9129 */ 9130 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 9131 int keyEventAction; 9132 if (down) { 9133 keyEventAction = KeyEvent.ACTION_DOWN; 9134 } else { 9135 keyEventAction = KeyEvent.ACTION_UP; 9136 } 9137 9138 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 9139 1, (metaState & KeyEvent.META_SHIFT_ON) 9140 | (metaState & KeyEvent.META_ALT_ON) 9141 | (metaState & KeyEvent.META_SYM_ON) 9142 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 9143 sendKeyEvent(event); 9144 } 9145 9146 private void sendKeyEvent(KeyEvent event) { 9147 int direction = 0; 9148 switch (event.getKeyCode()) { 9149 case KeyEvent.KEYCODE_DPAD_DOWN: 9150 direction = View.FOCUS_DOWN; 9151 break; 9152 case KeyEvent.KEYCODE_DPAD_UP: 9153 direction = View.FOCUS_UP; 9154 break; 9155 case KeyEvent.KEYCODE_DPAD_LEFT: 9156 direction = View.FOCUS_LEFT; 9157 break; 9158 case KeyEvent.KEYCODE_DPAD_RIGHT: 9159 direction = View.FOCUS_RIGHT; 9160 break; 9161 case KeyEvent.KEYCODE_TAB: 9162 direction = event.isShiftPressed() ? View.FOCUS_BACKWARD : View.FOCUS_FORWARD; 9163 break; 9164 } 9165 if (direction != 0 && mWebView.focusSearch(direction) == null) { 9166 // Can't take focus in that direction 9167 direction = 0; 9168 } 9169 int eventHubAction = EventHub.KEY_UP; 9170 if (event.getAction() == KeyEvent.ACTION_DOWN) { 9171 eventHubAction = EventHub.KEY_DOWN; 9172 int sound = keyCodeToSoundsEffect(event.getKeyCode()); 9173 if (sound != 0) { 9174 mWebView.playSoundEffect(sound); 9175 } 9176 } 9177 mWebViewCore.sendMessage(eventHubAction, direction, event); 9178 } 9179 9180 /** 9181 * @return Whether accessibility script has been injected. 9182 */ 9183 private boolean accessibilityScriptInjected() { 9184 // TODO: Maybe the injected script should announce its presence in 9185 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 9186 // will check that as one of the conditions it looks for 9187 return mAccessibilityScriptInjected; 9188 } 9189 9190 /** 9191 * Set the background color. It's white by default. Pass 9192 * zero to make the view transparent. 9193 * @param color the ARGB color described by Color.java 9194 */ 9195 @Override 9196 public void setBackgroundColor(int color) { 9197 mBackgroundColor = color; 9198 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 9199 } 9200 9201 /** 9202 * @deprecated This method is now obsolete. 9203 */ 9204 @Deprecated 9205 public void debugDump() { 9206 } 9207 9208 /** 9209 * Draw the HTML page into the specified canvas. This call ignores any 9210 * view-specific zoom, scroll offset, or other changes. It does not draw 9211 * any view-specific chrome, such as progress or URL bars. 9212 * 9213 * @hide only needs to be accessible to Browser and testing 9214 */ 9215 public void drawPage(Canvas canvas) { 9216 calcOurContentVisibleRectF(mVisibleContentRect); 9217 nativeDraw(canvas, mVisibleContentRect, 0, 0, false); 9218 } 9219 9220 /** 9221 * Enable the communication b/t the webView and VideoViewProxy 9222 * 9223 * @hide only used by the Browser 9224 */ 9225 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 9226 mHTML5VideoViewProxy = proxy; 9227 } 9228 9229 /** 9230 * Set the time to wait between passing touches to WebCore. See also the 9231 * TOUCH_SENT_INTERVAL member for further discussion. 9232 * 9233 * @hide This is only used by the DRT test application. 9234 */ 9235 public void setTouchInterval(int interval) { 9236 mCurrentTouchInterval = interval; 9237 } 9238 9239 /** 9240 * Copy text into the clipboard. This is called indirectly from 9241 * WebViewCore. 9242 * @param text The text to put into the clipboard. 9243 */ 9244 private void copyToClipboard(String text) { 9245 ClipboardManager cm = (ClipboardManager)mContext 9246 .getSystemService(Context.CLIPBOARD_SERVICE); 9247 ClipData clip = ClipData.newPlainText(getTitle(), text); 9248 cm.setPrimaryClip(clip); 9249 } 9250 9251 /*package*/ void autoFillForm(int autoFillQueryId) { 9252 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 9253 } 9254 9255 /* package */ ViewManager getViewManager() { 9256 return mViewManager; 9257 } 9258 9259 private static void checkThread() { 9260 if (Looper.myLooper() != Looper.getMainLooper()) { 9261 Throwable throwable = new Throwable( 9262 "Warning: A WebView method was called on thread '" + 9263 Thread.currentThread().getName() + "'. " + 9264 "All WebView methods must be called on the UI thread. " + 9265 "Future versions of WebView may not support use on other threads."); 9266 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 9267 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 9268 } 9269 } 9270 9271 /** @hide send content invalidate */ 9272 protected void contentInvalidateAll() { 9273 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 9274 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 9275 } 9276 } 9277 9278 /** @hide discard all textures from tiles. Used in Profiled WebView */ 9279 public void discardAllTextures() { 9280 nativeDiscardAllTextures(); 9281 } 9282 9283 /** 9284 * Begin collecting per-tile profiling data 9285 * 9286 * @hide only used by profiling tests 9287 */ 9288 public void tileProfilingStart() { 9289 nativeTileProfilingStart(); 9290 } 9291 /** 9292 * Return per-tile profiling data 9293 * 9294 * @hide only used by profiling tests 9295 */ 9296 public float tileProfilingStop() { 9297 return nativeTileProfilingStop(); 9298 } 9299 9300 /** @hide only used by profiling tests */ 9301 public void tileProfilingClear() { 9302 nativeTileProfilingClear(); 9303 } 9304 /** @hide only used by profiling tests */ 9305 public int tileProfilingNumFrames() { 9306 return nativeTileProfilingNumFrames(); 9307 } 9308 /** @hide only used by profiling tests */ 9309 public int tileProfilingNumTilesInFrame(int frame) { 9310 return nativeTileProfilingNumTilesInFrame(frame); 9311 } 9312 /** @hide only used by profiling tests */ 9313 public int tileProfilingGetInt(int frame, int tile, String key) { 9314 return nativeTileProfilingGetInt(frame, tile, key); 9315 } 9316 /** @hide only used by profiling tests */ 9317 public float tileProfilingGetFloat(int frame, int tile, String key) { 9318 return nativeTileProfilingGetFloat(frame, tile, key); 9319 } 9320 9321 /** 9322 * Checks the focused content for an editable text field. This can be 9323 * text input or ContentEditable. 9324 * @return true if the focused item is an editable text field. 9325 */ 9326 boolean focusCandidateIsEditableText() { 9327 if (mFocusedNode != null) { 9328 return mFocusedNode.mEditable; 9329 } 9330 return false; 9331 } 9332 9333 // Called via JNI 9334 private void postInvalidate() { 9335 mWebView.postInvalidate(); 9336 } 9337 9338 private native void nativeCreate(int ptr, String drawableDir, boolean isHighEndGfx); 9339 private native void nativeDebugDump(); 9340 private native void nativeDestroy(); 9341 9342 /** 9343 * Draw the picture set with a background color and extra. If 9344 * "splitIfNeeded" is true and the return value is not 0, the return value 9345 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 9346 * native allocation can be freed. 9347 */ 9348 private native int nativeDraw(Canvas canvas, RectF visibleRect, 9349 int color, int extra, boolean splitIfNeeded); 9350 private native void nativeDumpDisplayTree(String urlOrNull); 9351 private native boolean nativeEvaluateLayersAnimations(int nativeInstance); 9352 private native int nativeGetDrawGLFunction(int nativeInstance, Rect rect, 9353 Rect viewRect, RectF visibleRect, float scale, int extras); 9354 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect, 9355 RectF visibleRect, float scale); 9356 private native String nativeGetSelection(); 9357 private native Rect nativeLayerBounds(int layer); 9358 private native void nativeSetHeightCanMeasure(boolean measure); 9359 private native boolean nativeSetBaseLayer(int nativeInstance, 9360 int layer, Region invalRegion, 9361 boolean showVisualIndicator, boolean isPictureAfterFirstLayout); 9362 private native int nativeGetBaseLayer(); 9363 private native void nativeReplaceBaseContent(int content); 9364 private native void nativeCopyBaseContentToPicture(Picture pict); 9365 private native boolean nativeHasContent(); 9366 private native void nativeStopGL(); 9367 private native Rect nativeSubtractLayers(Rect content); 9368 private native void nativeDiscardAllTextures(); 9369 private native void nativeTileProfilingStart(); 9370 private native float nativeTileProfilingStop(); 9371 private native void nativeTileProfilingClear(); 9372 private native int nativeTileProfilingNumFrames(); 9373 private native int nativeTileProfilingNumTilesInFrame(int frame); 9374 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 9375 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 9376 9377 private native void nativeUseHardwareAccelSkia(boolean enabled); 9378 9379 // Returns a pointer to the scrollable LayerAndroid at the given point. 9380 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 9381 Rect scrollBounds); 9382 /** 9383 * Scroll the specified layer. 9384 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 9385 * @param newX Destination x position to which to scroll. 9386 * @param newY Destination y position to which to scroll. 9387 * @return True if the layer is successfully scrolled. 9388 */ 9389 private native boolean nativeScrollLayer(int layer, int newX, int newY); 9390 private native void nativeSetIsScrolling(boolean isScrolling); 9391 private native int nativeGetBackgroundColor(); 9392 native boolean nativeSetProperty(String key, String value); 9393 native String nativeGetProperty(String key); 9394 /** 9395 * See {@link ComponentCallbacks2} for the trim levels and descriptions 9396 */ 9397 private static native void nativeOnTrimMemory(int level); 9398 private static native void nativeSetPauseDrawing(int instance, boolean pause); 9399 private static native void nativeSetTextSelection(int instance, int selection); 9400 private static native int nativeGetHandleLayerId(int instance, int handle, 9401 Rect cursorLocation); 9402 private static native boolean nativeIsBaseFirst(int instance); 9403} 9404