WebView.java revision 53519eacacbd238a0030bacdda3d31fa5b12af67
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.animation.ObjectAnimator; 20import android.annotation.Widget; 21import android.app.ActivityManager; 22import android.app.AlertDialog; 23import android.content.BroadcastReceiver; 24import android.content.ClipData; 25import android.content.ClipboardManager; 26import android.content.ComponentCallbacks2; 27import android.content.Context; 28import android.content.DialogInterface; 29import android.content.DialogInterface.OnCancelListener; 30import android.content.Intent; 31import android.content.IntentFilter; 32import android.content.pm.PackageManager; 33import android.content.res.Configuration; 34import android.database.DataSetObserver; 35import android.graphics.Bitmap; 36import android.graphics.BitmapFactory; 37import android.graphics.BitmapShader; 38import android.graphics.Canvas; 39import android.graphics.Color; 40import android.graphics.ColorFilter; 41import android.graphics.DrawFilter; 42import android.graphics.Paint; 43import android.graphics.PaintFlagsDrawFilter; 44import android.graphics.Picture; 45import android.graphics.Point; 46import android.graphics.Rect; 47import android.graphics.RectF; 48import android.graphics.Region; 49import android.graphics.RegionIterator; 50import android.graphics.Shader; 51import android.graphics.drawable.Drawable; 52import android.net.Proxy; 53import android.net.ProxyProperties; 54import android.net.Uri; 55import android.net.http.SslCertificate; 56import android.os.AsyncTask; 57import android.os.Bundle; 58import android.os.Handler; 59import android.os.Looper; 60import android.os.Message; 61import android.os.StrictMode; 62import android.os.SystemClock; 63import android.provider.Settings; 64import android.security.KeyChain; 65import android.speech.tts.TextToSpeech; 66import android.text.Editable; 67import android.text.InputType; 68import android.text.Selection; 69import android.text.TextUtils; 70import android.util.AttributeSet; 71import android.util.EventLog; 72import android.util.Log; 73import android.view.Display; 74import android.view.Gravity; 75import android.view.HapticFeedbackConstants; 76import android.view.HardwareCanvas; 77import android.view.InputDevice; 78import android.view.KeyCharacterMap; 79import android.view.KeyEvent; 80import android.view.LayoutInflater; 81import android.view.MotionEvent; 82import android.view.ScaleGestureDetector; 83import android.view.SoundEffectConstants; 84import android.view.VelocityTracker; 85import android.view.View; 86import android.view.ViewConfiguration; 87import android.view.ViewGroup; 88import android.view.ViewParent; 89import android.view.ViewTreeObserver; 90import android.view.WindowManager; 91import android.view.accessibility.AccessibilityEvent; 92import android.view.accessibility.AccessibilityManager; 93import android.view.accessibility.AccessibilityNodeInfo; 94import android.view.inputmethod.BaseInputConnection; 95import android.view.inputmethod.EditorInfo; 96import android.view.inputmethod.InputConnection; 97import android.view.inputmethod.InputMethodManager; 98import android.webkit.WebTextView.AutoCompleteAdapter; 99import android.webkit.WebViewCore.DrawData; 100import android.webkit.WebViewCore.EventHub; 101import android.webkit.WebViewCore.TextFieldInitData; 102import android.webkit.WebViewCore.TouchEventData; 103import android.webkit.WebViewCore.TouchHighlightData; 104import android.webkit.WebViewCore.WebKitHitTest; 105import android.widget.AbsoluteLayout; 106import android.widget.Adapter; 107import android.widget.AdapterView; 108import android.widget.AdapterView.OnItemClickListener; 109import android.widget.ArrayAdapter; 110import android.widget.CheckedTextView; 111import android.widget.LinearLayout; 112import android.widget.ListView; 113import android.widget.OverScroller; 114import android.widget.Toast; 115 116import junit.framework.Assert; 117 118import java.io.File; 119import java.io.FileInputStream; 120import java.io.FileNotFoundException; 121import java.io.FileOutputStream; 122import java.io.IOException; 123import java.io.InputStream; 124import java.io.OutputStream; 125import java.net.URLDecoder; 126import java.util.ArrayList; 127import java.util.HashMap; 128import java.util.HashSet; 129import java.util.List; 130import java.util.Map; 131import java.util.Set; 132import java.util.Vector; 133import java.util.regex.Matcher; 134import java.util.regex.Pattern; 135 136/** 137 * <p>A View that displays web pages. This class is the basis upon which you 138 * can roll your own web browser or simply display some online content within your Activity. 139 * It uses the WebKit rendering engine to display 140 * web pages and includes methods to navigate forward and backward 141 * through a history, zoom in and out, perform text searches and more.</p> 142 * <p>To enable the built-in zoom, set 143 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 144 * (introduced in API version 3). 145 * <p>Note that, in order for your Activity to access the Internet and load web pages 146 * in a WebView, you must add the {@code INTERNET} permissions to your 147 * Android Manifest file:</p> 148 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 149 * 150 * <p>This must be a child of the <a 151 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 152 * element.</p> 153 * 154 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 155 * tutorial</a>.</p> 156 * 157 * <h3>Basic usage</h3> 158 * 159 * <p>By default, a WebView provides no browser-like widgets, does not 160 * enable JavaScript and web page errors are ignored. If your goal is only 161 * to display some HTML as a part of your UI, this is probably fine; 162 * the user won't need to interact with the web page beyond reading 163 * it, and the web page won't need to interact with the user. If you 164 * actually want a full-blown web browser, then you probably want to 165 * invoke the Browser application with a URL Intent rather than show it 166 * with a WebView. For example: 167 * <pre> 168 * Uri uri = Uri.parse("http://www.example.com"); 169 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 170 * startActivity(intent); 171 * </pre> 172 * <p>See {@link android.content.Intent} for more information.</p> 173 * 174 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 175 * or set the entire Activity window as a WebView during {@link 176 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 177 * <pre class="prettyprint"> 178 * WebView webview = new WebView(this); 179 * setContentView(webview); 180 * </pre> 181 * 182 * <p>Then load the desired web page:</p> 183 * <pre> 184 * // Simplest usage: note that an exception will NOT be thrown 185 * // if there is an error loading this page (see below). 186 * webview.loadUrl("http://slashdot.org/"); 187 * 188 * // OR, you can also load from an HTML string: 189 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 190 * webview.loadData(summary, "text/html", null); 191 * // ... although note that there are restrictions on what this HTML can do. 192 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 193 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 194 * </pre> 195 * 196 * <p>A WebView has several customization points where you can add your 197 * own behavior. These are:</p> 198 * 199 * <ul> 200 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 201 * This class is called when something that might impact a 202 * browser UI happens, for instance, progress updates and 203 * JavaScript alerts are sent here (see <a 204 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 205 * </li> 206 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 207 * It will be called when things happen that impact the 208 * rendering of the content, eg, errors or form submissions. You 209 * can also intercept URL loading here (via {@link 210 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 211 * shouldOverrideUrlLoading()}).</li> 212 * <li>Modifying the {@link android.webkit.WebSettings}, such as 213 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 214 * setJavaScriptEnabled()}. </li> 215 * <li>Injecting Java objects into the WebView using the 216 * {@link android.webkit.WebView#addJavascriptInterface} method. This 217 * method allows you to inject Java objects into a page's JavaScript 218 * context, so that they can be accessed by JavaScript in the page.</li> 219 * </ul> 220 * 221 * <p>Here's a more complicated example, showing error handling, 222 * settings, and progress notification:</p> 223 * 224 * <pre class="prettyprint"> 225 * // Let's display the progress in the activity title bar, like the 226 * // browser app does. 227 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 228 * 229 * webview.getSettings().setJavaScriptEnabled(true); 230 * 231 * final Activity activity = this; 232 * webview.setWebChromeClient(new WebChromeClient() { 233 * public void onProgressChanged(WebView view, int progress) { 234 * // Activities and WebViews measure progress with different scales. 235 * // The progress meter will automatically disappear when we reach 100% 236 * activity.setProgress(progress * 1000); 237 * } 238 * }); 239 * webview.setWebViewClient(new WebViewClient() { 240 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 241 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 242 * } 243 * }); 244 * 245 * webview.loadUrl("http://slashdot.org/"); 246 * </pre> 247 * 248 * <h3>Cookie and window management</h3> 249 * 250 * <p>For obvious security reasons, your application has its own 251 * cache, cookie store etc.—it does not share the Browser 252 * application's data. Cookies are managed on a separate thread, so 253 * operations like index building don't block the UI 254 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 255 * if you want to use cookies in your application. 256 * </p> 257 * 258 * <p>By default, requests by the HTML to open new windows are 259 * ignored. This is true whether they be opened by JavaScript or by 260 * the target attribute on a link. You can customize your 261 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 262 * and render them in whatever manner you want.</p> 263 * 264 * <p>The standard behavior for an Activity is to be destroyed and 265 * recreated when the device orientation or any other configuration changes. This will cause 266 * the WebView to reload the current page. If you don't want that, you 267 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 268 * changes, and then just leave the WebView alone. It'll automatically 269 * re-orient itself as appropriate. Read <a 270 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 271 * more information about how to handle configuration changes during runtime.</p> 272 * 273 * 274 * <h3>Building web pages to support different screen densities</h3> 275 * 276 * <p>The screen density of a device is based on the screen resolution. A screen with low density 277 * has fewer available pixels per inch, where a screen with high density 278 * has more — sometimes significantly more — pixels per inch. The density of a 279 * screen is important because, other things being equal, a UI element (such as a button) whose 280 * height and width are defined in terms of screen pixels will appear larger on the lower density 281 * screen and smaller on the higher density screen. 282 * For simplicity, Android collapses all actual screen densities into three generalized densities: 283 * high, medium, and low.</p> 284 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 285 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 286 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 287 * are bigger). 288 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 289 * you (as a web developer) target screens with different screen densities.</p> 290 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 291 * <ul> 292 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 293 * default scaling factor used for the current device. For example, if the value of {@code 294 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 295 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 296 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 297 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 298 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 299 * (discussed below), then you can stop this default scaling behavior.</li> 300 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 301 * densities for which this style sheet is to be used. The corresponding value should be either 302 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 303 * density, or high density screens, respectively. For example: 304 * <pre> 305 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 306 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 307 * which is the high density pixel ratio.</p> 308 * </li> 309 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 310 * this to specify the target density for which the web page is designed, using the following 311 * values: 312 * <ul> 313 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 314 * occurs.</li> 315 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 316 * as appropriate.</li> 317 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 318 * low density screens scale down. This is also the default behavior.</li> 319 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 320 * as appropriate.</li> 321 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 322 * values are 70-400).</li> 323 * </ul> 324 * <p>Here's an example meta tag to specify the target density:</p> 325 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 326 * </ul> 327 * <p>If you want to modify your web page for different densities, by using the {@code 328 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 329 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 330 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 331 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 332 * 333 * <h3>HTML5 Video support</h3> 334 * 335 * <p>In order to support inline HTML5 video in your application, you need to have hardware 336 * acceleration turned on, and set a {@link android.webkit.WebChromeClient}. For full screen support, 337 * implementations of {@link WebChromeClient#onShowCustomView(View, WebChromeClient.CustomViewCallback)} 338 * and {@link WebChromeClient#onHideCustomView()} are required, 339 * {@link WebChromeClient#getVideoLoadingProgressView()} is optional. 340 * </p> 341 * 342 * 343 */ 344@Widget 345public class WebView extends AbsoluteLayout 346 implements ViewTreeObserver.OnGlobalFocusChangeListener, 347 ViewGroup.OnHierarchyChangeListener { 348 349 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 350 @Override 351 public void onGlobalLayout() { 352 if (isShown()) { 353 setGLRectViewport(); 354 } 355 } 356 } 357 358 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 359 @Override 360 public void onScrollChanged() { 361 if (isShown()) { 362 setGLRectViewport(); 363 } 364 } 365 } 366 367 /** 368 * InputConnection used for ContentEditable. This captures changes 369 * to the text and sends them either as key strokes or text changes. 370 */ 371 private class WebViewInputConnection extends BaseInputConnection { 372 // Used for mapping characters to keys typed. 373 private KeyCharacterMap mKeyCharacterMap; 374 private boolean mIsKeySentByMe; 375 private int mInputType; 376 private int mImeOptions; 377 private String mHint; 378 379 public WebViewInputConnection() { 380 super(WebView.this, true); 381 } 382 383 @Override 384 public boolean sendKeyEvent(KeyEvent event) { 385 // Some IMEs send key events directly using sendKeyEvents. 386 // WebViewInputConnection should treat these as text changes. 387 if (!mIsKeySentByMe) { 388 if (event.getAction() == KeyEvent.ACTION_UP) { 389 if (event.getKeyCode() == KeyEvent.KEYCODE_DEL) { 390 return deleteSurroundingText(1, 0); 391 } else if (event.getKeyCode() == KeyEvent.KEYCODE_FORWARD_DEL) { 392 return deleteSurroundingText(0, 1); 393 } else if (event.getUnicodeChar() != 0){ 394 String newComposingText = 395 Character.toString((char)event.getUnicodeChar()); 396 return commitText(newComposingText, 1); 397 } 398 } else if (event.getAction() == KeyEvent.ACTION_DOWN && 399 (event.getKeyCode() == KeyEvent.KEYCODE_DEL 400 || event.getKeyCode() == KeyEvent.KEYCODE_FORWARD_DEL 401 || event.getUnicodeChar() != 0)) { 402 return true; // only act on action_down 403 } 404 } 405 return super.sendKeyEvent(event); 406 } 407 408 public void setTextAndKeepSelection(CharSequence text) { 409 Editable editable = getEditable(); 410 int selectionStart = Selection.getSelectionStart(editable); 411 int selectionEnd = Selection.getSelectionEnd(editable); 412 editable.replace(0, editable.length(), text); 413 InputMethodManager imm = InputMethodManager.peekInstance(); 414 if (imm != null) { 415 // Since the text has changed, do not allow the IME to replace the 416 // existing text as though it were a completion. 417 imm.restartInput(WebView.this); 418 } 419 // Keep the previous selection. 420 selectionStart = Math.min(selectionStart, editable.length()); 421 selectionEnd = Math.min(selectionEnd, editable.length()); 422 setSelection(selectionStart, selectionEnd); 423 } 424 425 @Override 426 public boolean setComposingText(CharSequence text, int newCursorPosition) { 427 Editable editable = getEditable(); 428 int start = getComposingSpanStart(editable); 429 int end = getComposingSpanEnd(editable); 430 if (start < 0 || end < 0) { 431 start = Selection.getSelectionStart(editable); 432 end = Selection.getSelectionEnd(editable); 433 } 434 if (end < start) { 435 int temp = end; 436 end = start; 437 start = temp; 438 } 439 setNewText(start, end, text); 440 return super.setComposingText(text, newCursorPosition); 441 } 442 443 @Override 444 public boolean commitText(CharSequence text, int newCursorPosition) { 445 setComposingText(text, newCursorPosition); 446 int cursorPosition = Selection.getSelectionEnd(getEditable()); 447 setComposingRegion(cursorPosition, cursorPosition); 448 return true; 449 } 450 451 @Override 452 public boolean deleteSurroundingText(int leftLength, int rightLength) { 453 Editable editable = getEditable(); 454 int cursorPosition = Selection.getSelectionEnd(editable); 455 int startDelete = Math.max(0, cursorPosition - leftLength); 456 int endDelete = Math.min(editable.length(), 457 cursorPosition + rightLength); 458 setNewText(startDelete, endDelete, ""); 459 return super.deleteSurroundingText(leftLength, rightLength); 460 } 461 462 public void initEditorInfo(WebViewCore.TextFieldInitData initData) { 463 int type = initData.mType; 464 int inputType = InputType.TYPE_CLASS_TEXT 465 | InputType.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT; 466 int imeOptions = EditorInfo.IME_FLAG_NO_EXTRACT_UI 467 | EditorInfo.IME_FLAG_NO_FULLSCREEN; 468 if (!initData.mIsSpellCheckEnabled) { 469 inputType |= InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS; 470 } 471 if (WebTextView.TEXT_AREA != type 472 && initData.mIsTextFieldNext) { 473 imeOptions |= EditorInfo.IME_FLAG_NAVIGATE_NEXT; 474 } 475 switch (type) { 476 case WebTextView.NORMAL_TEXT_FIELD: 477 imeOptions |= EditorInfo.IME_ACTION_GO; 478 break; 479 case WebTextView.TEXT_AREA: 480 inputType |= InputType.TYPE_TEXT_FLAG_MULTI_LINE 481 | InputType.TYPE_TEXT_FLAG_CAP_SENTENCES 482 | InputType.TYPE_TEXT_FLAG_AUTO_CORRECT; 483 imeOptions |= EditorInfo.IME_ACTION_NONE; 484 break; 485 case WebTextView.PASSWORD: 486 inputType |= EditorInfo.TYPE_TEXT_VARIATION_WEB_PASSWORD; 487 imeOptions |= EditorInfo.IME_ACTION_GO; 488 break; 489 case WebTextView.SEARCH: 490 imeOptions |= EditorInfo.IME_ACTION_SEARCH; 491 break; 492 case WebTextView.EMAIL: 493 // inputType needs to be overwritten because of the different text variation. 494 inputType = InputType.TYPE_CLASS_TEXT 495 | InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS; 496 imeOptions |= EditorInfo.IME_ACTION_GO; 497 break; 498 case WebTextView.NUMBER: 499 // inputType needs to be overwritten because of the different class. 500 inputType = InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_NORMAL 501 | InputType.TYPE_NUMBER_FLAG_SIGNED | InputType.TYPE_NUMBER_FLAG_DECIMAL; 502 // Number and telephone do not have both a Tab key and an 503 // action, so set the action to NEXT 504 imeOptions |= EditorInfo.IME_ACTION_NEXT; 505 break; 506 case WebTextView.TELEPHONE: 507 // inputType needs to be overwritten because of the different class. 508 inputType = InputType.TYPE_CLASS_PHONE; 509 imeOptions |= EditorInfo.IME_ACTION_NEXT; 510 break; 511 case WebTextView.URL: 512 // TYPE_TEXT_VARIATION_URI prevents Tab key from showing, so 513 // exclude it for now. 514 imeOptions |= EditorInfo.IME_ACTION_GO; 515 inputType |= InputType.TYPE_TEXT_VARIATION_URI; 516 break; 517 default: 518 imeOptions |= EditorInfo.IME_ACTION_GO; 519 break; 520 } 521 mHint = initData.mLabel; 522 mInputType = inputType; 523 mImeOptions = imeOptions; 524 } 525 526 public void setupEditorInfo(EditorInfo outAttrs) { 527 outAttrs.inputType = mInputType; 528 outAttrs.imeOptions = mImeOptions; 529 outAttrs.hintText = mHint; 530 outAttrs.initialCapsMode = getCursorCapsMode(InputType.TYPE_CLASS_TEXT); 531 } 532 533 /** 534 * Sends a text change to webkit indirectly. If it is a single- 535 * character add or delete, it sends it as a key stroke. If it cannot 536 * be represented as a key stroke, it sends it as a field change. 537 * @param start The start offset (inclusive) of the text being changed. 538 * @param end The end offset (exclusive) of the text being changed. 539 * @param text The new text to replace the changed text. 540 */ 541 private void setNewText(int start, int end, CharSequence text) { 542 mIsKeySentByMe = true; 543 Editable editable = getEditable(); 544 CharSequence original = editable.subSequence(start, end); 545 boolean isCharacterAdd = false; 546 boolean isCharacterDelete = false; 547 int textLength = text.length(); 548 int originalLength = original.length(); 549 if (textLength > originalLength) { 550 isCharacterAdd = (textLength == originalLength + 1) 551 && TextUtils.regionMatches(text, 0, original, 0, 552 originalLength); 553 } else if (originalLength > textLength) { 554 isCharacterDelete = (textLength == originalLength - 1) 555 && TextUtils.regionMatches(text, 0, original, 0, 556 textLength); 557 } 558 if (isCharacterAdd) { 559 sendCharacter(text.charAt(textLength - 1)); 560 } else if (isCharacterDelete) { 561 sendDeleteKey(); 562 } else if ((textLength != originalLength) || 563 !TextUtils.regionMatches(text, 0, original, 0, 564 textLength)) { 565 // Send a message so that key strokes and text replacement 566 // do not come out of order. 567 Message replaceMessage = mPrivateHandler.obtainMessage( 568 REPLACE_TEXT, start, end, text.toString()); 569 mPrivateHandler.sendMessage(replaceMessage); 570 } 571 mIsKeySentByMe = false; 572 } 573 574 /** 575 * Send a single character to the WebView as a key down and up event. 576 * @param c The character to be sent. 577 */ 578 private void sendCharacter(char c) { 579 if (mKeyCharacterMap == null) { 580 mKeyCharacterMap = KeyCharacterMap.load(KeyCharacterMap.VIRTUAL_KEYBOARD); 581 } 582 char[] chars = new char[1]; 583 chars[0] = c; 584 KeyEvent[] events = mKeyCharacterMap.getEvents(chars); 585 if (events != null) { 586 for (KeyEvent event : events) { 587 sendKeyEvent(event); 588 } 589 } else { 590 Message msg = mPrivateHandler.obtainMessage(KEY_PRESS, (int) c, 0); 591 mPrivateHandler.sendMessage(msg); 592 } 593 } 594 595 /** 596 * Send the delete character as a key down and up event. 597 */ 598 private void sendDeleteKey() { 599 long eventTime = SystemClock.uptimeMillis(); 600 sendKeyEvent(new KeyEvent(eventTime, eventTime, 601 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL, 0, 0, 602 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 603 KeyEvent.FLAG_SOFT_KEYBOARD)); 604 sendKeyEvent(new KeyEvent(SystemClock.uptimeMillis(), eventTime, 605 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DEL, 0, 0, 606 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 607 KeyEvent.FLAG_SOFT_KEYBOARD)); 608 } 609 } 610 611 612 // The listener to capture global layout change event. 613 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 614 615 // The listener to capture scroll event. 616 private InnerScrollChangedListener mScrollChangedListener = null; 617 618 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 619 // the screen all-the-time. Good for profiling our drawing code 620 static private final boolean AUTO_REDRAW_HACK = false; 621 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 622 private boolean mAutoRedraw; 623 624 // Reference to the AlertDialog displayed by InvokeListBox. 625 // It's used to dismiss the dialog in destroy if not done before. 626 private AlertDialog mListBoxDialog = null; 627 628 static final String LOGTAG = "webview"; 629 630 private ZoomManager mZoomManager; 631 632 private final Rect mGLRectViewport = new Rect(); 633 private final Rect mViewRectViewport = new Rect(); 634 private final RectF mVisibleContentRect = new RectF(); 635 private boolean mGLViewportEmpty = false; 636 WebViewInputConnection mInputConnection = null; 637 private int mFieldPointer; 638 639 /** 640 * Transportation object for returning WebView across thread boundaries. 641 */ 642 public class WebViewTransport { 643 private WebView mWebview; 644 645 /** 646 * Set the WebView to the transportation object. 647 * @param webview The WebView to transport. 648 */ 649 public synchronized void setWebView(WebView webview) { 650 mWebview = webview; 651 } 652 653 /** 654 * Return the WebView object. 655 * @return WebView The transported WebView object. 656 */ 657 public synchronized WebView getWebView() { 658 return mWebview; 659 } 660 } 661 662 private static class OnTrimMemoryListener implements ComponentCallbacks2 { 663 private static OnTrimMemoryListener sInstance = null; 664 665 static void init(Context c) { 666 if (sInstance == null) { 667 sInstance = new OnTrimMemoryListener(c.getApplicationContext()); 668 } 669 } 670 671 private OnTrimMemoryListener(Context c) { 672 c.registerComponentCallbacks(this); 673 } 674 675 @Override 676 public void onConfigurationChanged(Configuration newConfig) { 677 // Ignore 678 } 679 680 @Override 681 public void onLowMemory() { 682 // Ignore 683 } 684 685 @Override 686 public void onTrimMemory(int level) { 687 if (DebugFlags.WEB_VIEW) { 688 Log.d("WebView", "onTrimMemory: " + level); 689 } 690 WebView.nativeOnTrimMemory(level); 691 } 692 693 } 694 695 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 696 private final CallbackProxy mCallbackProxy; 697 698 private final WebViewDatabase mDatabase; 699 700 // SSL certificate for the main top-level page (if secure) 701 private SslCertificate mCertificate; 702 703 // Native WebView pointer that is 0 until the native object has been 704 // created. 705 private int mNativeClass; 706 // This would be final but it needs to be set to null when the WebView is 707 // destroyed. 708 private WebViewCore mWebViewCore; 709 // Handler for dispatching UI messages. 710 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 711 private WebTextView mWebTextView; 712 // Used to ignore changes to webkit text that arrives to the UI side after 713 // more key events. 714 private int mTextGeneration; 715 716 /* package */ void incrementTextGeneration() { mTextGeneration++; } 717 718 // Used by WebViewCore to create child views. 719 /* package */ final ViewManager mViewManager; 720 721 // Used to display in full screen mode 722 PluginFullScreenHolder mFullScreenHolder; 723 724 /** 725 * Position of the last touch event in pixels. 726 * Use integer to prevent loss of dragging delta calculation accuracy; 727 * which was done in float and converted to integer, and resulted in gradual 728 * and compounding touch position and view dragging mismatch. 729 */ 730 private int mLastTouchX; 731 private int mLastTouchY; 732 private int mStartTouchX; 733 private int mStartTouchY; 734 private float mAverageAngle; 735 736 /** 737 * Time of the last touch event. 738 */ 739 private long mLastTouchTime; 740 741 /** 742 * Time of the last time sending touch event to WebViewCore 743 */ 744 private long mLastSentTouchTime; 745 746 /** 747 * The minimum elapsed time before sending another ACTION_MOVE event to 748 * WebViewCore. This really should be tuned for each type of the devices. 749 * For example in Google Map api test case, it takes Dream device at least 750 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 751 * triggering the layout and drawing the picture. While the same process 752 * takes 60+ms on the current high speed device. If we make 753 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 754 * to WebViewCore queue and the real layout and draw events will be pushed 755 * to further, which slows down the refresh rate. Choose 50 to favor the 756 * current high speed devices. For Dream like devices, 100 is a better 757 * choice. Maybe make this in the buildspec later. 758 * (Update 12/14/2010: changed to 0 since current device should be able to 759 * handle the raw events and Map team voted to have the raw events too. 760 */ 761 private static final int TOUCH_SENT_INTERVAL = 0; 762 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 763 764 /** 765 * Helper class to get velocity for fling 766 */ 767 VelocityTracker mVelocityTracker; 768 private int mMaximumFling; 769 private float mLastVelocity; 770 private float mLastVelX; 771 private float mLastVelY; 772 773 // The id of the native layer being scrolled. 774 private int mCurrentScrollingLayerId; 775 private Rect mScrollingLayerRect = new Rect(); 776 777 // only trigger accelerated fling if the new velocity is at least 778 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 779 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 780 781 /** 782 * Touch mode 783 */ 784 private int mTouchMode = TOUCH_DONE_MODE; 785 private static final int TOUCH_INIT_MODE = 1; 786 private static final int TOUCH_DRAG_START_MODE = 2; 787 private static final int TOUCH_DRAG_MODE = 3; 788 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 789 private static final int TOUCH_SHORTPRESS_MODE = 5; 790 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 791 private static final int TOUCH_DONE_MODE = 7; 792 private static final int TOUCH_PINCH_DRAG = 8; 793 private static final int TOUCH_DRAG_LAYER_MODE = 9; 794 795 // Whether to forward the touch events to WebCore 796 // Can only be set by WebKit via JNI. 797 private boolean mForwardTouchEvents = false; 798 799 // Whether to prevent default during touch. The initial value depends on 800 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 801 // for touch down. Otherwise UI will wait for the answer of the first 802 // confirmed move before taking over the control. 803 private static final int PREVENT_DEFAULT_NO = 0; 804 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 805 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 806 private static final int PREVENT_DEFAULT_YES = 3; 807 private static final int PREVENT_DEFAULT_IGNORE = 4; 808 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 809 810 // true when the touch movement exceeds the slop 811 private boolean mConfirmMove; 812 813 // if true, touch events will be first processed by WebCore, if prevent 814 // default is not set, the UI will continue handle them. 815 private boolean mDeferTouchProcess; 816 817 // to avoid interfering with the current touch events, track them 818 // separately. Currently no snapping or fling in the deferred process mode 819 private int mDeferTouchMode = TOUCH_DONE_MODE; 820 private float mLastDeferTouchX; 821 private float mLastDeferTouchY; 822 823 // To keep track of whether the current drag was initiated by a WebTextView, 824 // so that we know not to hide the cursor 825 boolean mDragFromTextInput; 826 827 // Whether or not to draw the cursor ring. 828 private boolean mDrawCursorRing = true; 829 830 // true if onPause has been called (and not onResume) 831 private boolean mIsPaused; 832 833 private HitTestResult mInitialHitTestResult; 834 private WebKitHitTest mFocusedNode; 835 836 /** 837 * Customizable constant 838 */ 839 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 840 private int mTouchSlopSquare; 841 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 842 private int mDoubleTapSlopSquare; 843 // pre-computed density adjusted navigation slop 844 private int mNavSlop; 845 // This should be ViewConfiguration.getTapTimeout() 846 // But system time out is 100ms, which is too short for the browser. 847 // In the browser, if it switches out of tap too soon, jump tap won't work. 848 // In addition, a double tap on a trackpad will always have a duration of 849 // 300ms, so this value must be at least that (otherwise we will timeout the 850 // first tap and convert it to a long press). 851 private static final int TAP_TIMEOUT = 300; 852 // This should be ViewConfiguration.getLongPressTimeout() 853 // But system time out is 500ms, which is too short for the browser. 854 // With a short timeout, it's difficult to treat trigger a short press. 855 private static final int LONG_PRESS_TIMEOUT = 1000; 856 // needed to avoid flinging after a pause of no movement 857 private static final int MIN_FLING_TIME = 250; 858 // draw unfiltered after drag is held without movement 859 private static final int MOTIONLESS_TIME = 100; 860 // The amount of content to overlap between two screens when going through 861 // pages with the space bar, in pixels. 862 private static final int PAGE_SCROLL_OVERLAP = 24; 863 864 /** 865 * These prevent calling requestLayout if either dimension is fixed. This 866 * depends on the layout parameters and the measure specs. 867 */ 868 boolean mWidthCanMeasure; 869 boolean mHeightCanMeasure; 870 871 // Remember the last dimensions we sent to the native side so we can avoid 872 // sending the same dimensions more than once. 873 int mLastWidthSent; 874 int mLastHeightSent; 875 // Since view height sent to webkit could be fixed to avoid relayout, this 876 // value records the last sent actual view height. 877 int mLastActualHeightSent; 878 879 private int mContentWidth; // cache of value from WebViewCore 880 private int mContentHeight; // cache of value from WebViewCore 881 882 // Need to have the separate control for horizontal and vertical scrollbar 883 // style than the View's single scrollbar style 884 private boolean mOverlayHorizontalScrollbar = true; 885 private boolean mOverlayVerticalScrollbar = false; 886 887 // our standard speed. this way small distances will be traversed in less 888 // time than large distances, but we cap the duration, so that very large 889 // distances won't take too long to get there. 890 private static final int STD_SPEED = 480; // pixels per second 891 // time for the longest scroll animation 892 private static final int MAX_DURATION = 750; // milliseconds 893 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 894 895 // Used by OverScrollGlow 896 OverScroller mScroller; 897 898 private boolean mInOverScrollMode = false; 899 private static Paint mOverScrollBackground; 900 private static Paint mOverScrollBorder; 901 902 private boolean mWrapContent; 903 private static final int MOTIONLESS_FALSE = 0; 904 private static final int MOTIONLESS_PENDING = 1; 905 private static final int MOTIONLESS_TRUE = 2; 906 private static final int MOTIONLESS_IGNORE = 3; 907 private int mHeldMotionless; 908 909 // An instance for injecting accessibility in WebViews with disabled 910 // JavaScript or ones for which no accessibility script exists 911 private AccessibilityInjector mAccessibilityInjector; 912 913 // flag indicating if accessibility script is injected so we 914 // know to handle Shift and arrows natively first 915 private boolean mAccessibilityScriptInjected; 916 917 918 /** 919 * How long the caret handle will last without being touched. 920 */ 921 private static final long CARET_HANDLE_STAMINA_MS = 3000; 922 923 private Drawable mSelectHandleLeft; 924 private Drawable mSelectHandleRight; 925 private Drawable mSelectHandleCenter; 926 private Rect mSelectCursorBase = new Rect(); 927 private int mSelectCursorBaseLayerId; 928 private Rect mSelectCursorExtent = new Rect(); 929 private int mSelectCursorExtentLayerId; 930 private Rect mSelectDraggingCursor; 931 private Point mSelectDraggingOffset = new Point(); 932 private boolean mIsCaretSelection; 933 static final int HANDLE_ID_START = 0; 934 static final int HANDLE_ID_END = 1; 935 static final int HANDLE_ID_BASE = 2; 936 static final int HANDLE_ID_EXTENT = 3; 937 938 static boolean sDisableNavcache = false; 939 static boolean sEnableWebTextView = false; 940 // the color used to highlight the touch rectangles 941 static final int HIGHLIGHT_COLOR = 0x6633b5e5; 942 // the region indicating where the user touched on the screen 943 private Region mTouchHighlightRegion = new Region(); 944 // the paint for the touch highlight 945 private Paint mTouchHightlightPaint = new Paint(); 946 // debug only 947 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 948 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 949 private Paint mTouchCrossHairColor; 950 private int mTouchHighlightX; 951 private int mTouchHighlightY; 952 private long mTouchHighlightRequested; 953 954 // Basically this proxy is used to tell the Video to update layer tree at 955 // SetBaseLayer time and to pause when WebView paused. 956 private HTML5VideoViewProxy mHTML5VideoViewProxy; 957 958 // If we are using a set picture, don't send view updates to webkit 959 private boolean mBlockWebkitViewMessages = false; 960 961 // cached value used to determine if we need to switch drawing models 962 private boolean mHardwareAccelSkia = false; 963 964 /* 965 * Private message ids 966 */ 967 private static final int REMEMBER_PASSWORD = 1; 968 private static final int NEVER_REMEMBER_PASSWORD = 2; 969 private static final int SWITCH_TO_SHORTPRESS = 3; 970 private static final int SWITCH_TO_LONGPRESS = 4; 971 private static final int RELEASE_SINGLE_TAP = 5; 972 private static final int REQUEST_FORM_DATA = 6; 973 private static final int DRAG_HELD_MOTIONLESS = 8; 974 private static final int AWAKEN_SCROLL_BARS = 9; 975 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 976 private static final int SCROLL_SELECT_TEXT = 11; 977 978 979 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 980 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 981 982 /* 983 * Package message ids 984 */ 985 static final int SCROLL_TO_MSG_ID = 101; 986 static final int NEW_PICTURE_MSG_ID = 105; 987 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 988 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 989 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 990 static final int UPDATE_ZOOM_RANGE = 109; 991 static final int UNHANDLED_NAV_KEY = 110; 992 static final int CLEAR_TEXT_ENTRY = 111; 993 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 994 static final int SHOW_RECT_MSG_ID = 113; 995 static final int LONG_PRESS_CENTER = 114; 996 static final int PREVENT_TOUCH_ID = 115; 997 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 998 // obj=Rect in doc coordinates 999 static final int INVAL_RECT_MSG_ID = 117; 1000 static final int REQUEST_KEYBOARD = 118; 1001 static final int DO_MOTION_UP = 119; 1002 static final int SHOW_FULLSCREEN = 120; 1003 static final int HIDE_FULLSCREEN = 121; 1004 static final int DOM_FOCUS_CHANGED = 122; 1005 static final int REPLACE_BASE_CONTENT = 123; 1006 static final int FORM_DID_BLUR = 124; 1007 static final int RETURN_LABEL = 125; 1008 static final int UPDATE_MATCH_COUNT = 126; 1009 static final int CENTER_FIT_RECT = 127; 1010 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 1011 static final int SET_SCROLLBAR_MODES = 129; 1012 static final int SELECTION_STRING_CHANGED = 130; 1013 static final int HIT_TEST_RESULT = 131; 1014 static final int SAVE_WEBARCHIVE_FINISHED = 132; 1015 1016 static final int SET_AUTOFILLABLE = 133; 1017 static final int AUTOFILL_COMPLETE = 134; 1018 1019 static final int SELECT_AT = 135; 1020 static final int SCREEN_ON = 136; 1021 static final int ENTER_FULLSCREEN_VIDEO = 137; 1022 static final int UPDATE_SELECTION = 138; 1023 static final int UPDATE_ZOOM_DENSITY = 139; 1024 static final int EXIT_FULLSCREEN_VIDEO = 140; 1025 1026 static final int COPY_TO_CLIPBOARD = 141; 1027 static final int INIT_EDIT_FIELD = 142; 1028 static final int REPLACE_TEXT = 143; 1029 static final int CLEAR_CARET_HANDLE = 144; 1030 static final int KEY_PRESS = 145; 1031 1032 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 1033 private static final int LAST_PACKAGE_MSG_ID = HIT_TEST_RESULT; 1034 1035 static final String[] HandlerPrivateDebugString = { 1036 "REMEMBER_PASSWORD", // = 1; 1037 "NEVER_REMEMBER_PASSWORD", // = 2; 1038 "SWITCH_TO_SHORTPRESS", // = 3; 1039 "SWITCH_TO_LONGPRESS", // = 4; 1040 "RELEASE_SINGLE_TAP", // = 5; 1041 "REQUEST_FORM_DATA", // = 6; 1042 "RESUME_WEBCORE_PRIORITY", // = 7; 1043 "DRAG_HELD_MOTIONLESS", // = 8; 1044 "AWAKEN_SCROLL_BARS", // = 9; 1045 "PREVENT_DEFAULT_TIMEOUT", // = 10; 1046 "SCROLL_SELECT_TEXT" // = 11; 1047 }; 1048 1049 static final String[] HandlerPackageDebugString = { 1050 "SCROLL_TO_MSG_ID", // = 101; 1051 "102", // = 102; 1052 "103", // = 103; 1053 "104", // = 104; 1054 "NEW_PICTURE_MSG_ID", // = 105; 1055 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 1056 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 1057 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 1058 "UPDATE_ZOOM_RANGE", // = 109; 1059 "UNHANDLED_NAV_KEY", // = 110; 1060 "CLEAR_TEXT_ENTRY", // = 111; 1061 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 1062 "SHOW_RECT_MSG_ID", // = 113; 1063 "LONG_PRESS_CENTER", // = 114; 1064 "PREVENT_TOUCH_ID", // = 115; 1065 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 1066 "INVAL_RECT_MSG_ID", // = 117; 1067 "REQUEST_KEYBOARD", // = 118; 1068 "DO_MOTION_UP", // = 119; 1069 "SHOW_FULLSCREEN", // = 120; 1070 "HIDE_FULLSCREEN", // = 121; 1071 "DOM_FOCUS_CHANGED", // = 122; 1072 "REPLACE_BASE_CONTENT", // = 123; 1073 "FORM_DID_BLUR", // = 124; 1074 "RETURN_LABEL", // = 125; 1075 "UPDATE_MATCH_COUNT", // = 126; 1076 "CENTER_FIT_RECT", // = 127; 1077 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 1078 "SET_SCROLLBAR_MODES", // = 129; 1079 "SELECTION_STRING_CHANGED", // = 130; 1080 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 1081 "SAVE_WEBARCHIVE_FINISHED", // = 132; 1082 "SET_AUTOFILLABLE", // = 133; 1083 "AUTOFILL_COMPLETE", // = 134; 1084 "SELECT_AT", // = 135; 1085 "SCREEN_ON", // = 136; 1086 "ENTER_FULLSCREEN_VIDEO", // = 137; 1087 "UPDATE_SELECTION", // = 138; 1088 "UPDATE_ZOOM_DENSITY" // = 139; 1089 }; 1090 1091 // If the site doesn't use the viewport meta tag to specify the viewport, 1092 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 1093 static final int DEFAULT_VIEWPORT_WIDTH = 980; 1094 1095 // normally we try to fit the content to the minimum preferred width 1096 // calculated by the Webkit. To avoid the bad behavior when some site's 1097 // minimum preferred width keeps growing when changing the viewport width or 1098 // the minimum preferred width is huge, an upper limit is needed. 1099 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 1100 1101 // initial scale in percent. 0 means using default. 1102 private int mInitialScaleInPercent = 0; 1103 1104 // Whether or not a scroll event should be sent to webkit. This is only set 1105 // to false when restoring the scroll position. 1106 private boolean mSendScrollEvent = true; 1107 1108 private int mSnapScrollMode = SNAP_NONE; 1109 private static final int SNAP_NONE = 0; 1110 private static final int SNAP_LOCK = 1; // not a separate state 1111 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 1112 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 1113 private boolean mSnapPositive; 1114 1115 // keep these in sync with their counterparts in WebView.cpp 1116 private static final int DRAW_EXTRAS_NONE = 0; 1117 private static final int DRAW_EXTRAS_SELECTION = 1; 1118 private static final int DRAW_EXTRAS_CURSOR_RING = 2; 1119 1120 // keep this in sync with WebCore:ScrollbarMode in WebKit 1121 private static final int SCROLLBAR_AUTO = 0; 1122 private static final int SCROLLBAR_ALWAYSOFF = 1; 1123 // as we auto fade scrollbar, this is ignored. 1124 private static final int SCROLLBAR_ALWAYSON = 2; 1125 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 1126 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 1127 1128 // constants for determining script injection strategy 1129 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 1130 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 1131 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 1132 1133 // the alias via which accessibility JavaScript interface is exposed 1134 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 1135 1136 // Template for JavaScript that injects a screen-reader. 1137 private static final String ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE = 1138 "javascript:(function() {" + 1139 " var chooser = document.createElement('script');" + 1140 " chooser.type = 'text/javascript';" + 1141 " chooser.src = '%1s';" + 1142 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 1143 " })();"; 1144 1145 // Regular expression that matches the "axs" URL parameter. 1146 // The value of 0 means the accessibility script is opted out 1147 // The value of 1 means the accessibility script is already injected 1148 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 1149 1150 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 1151 private TextToSpeech mTextToSpeech; 1152 1153 // variable to cache the above pattern in case accessibility is enabled. 1154 private Pattern mMatchAxsUrlParameterPattern; 1155 1156 /** 1157 * Max distance to overscroll by in pixels. 1158 * This how far content can be pulled beyond its normal bounds by the user. 1159 */ 1160 private int mOverscrollDistance; 1161 1162 /** 1163 * Max distance to overfling by in pixels. 1164 * This is how far flinged content can move beyond the end of its normal bounds. 1165 */ 1166 private int mOverflingDistance; 1167 1168 private OverScrollGlow mOverScrollGlow; 1169 1170 // Used to match key downs and key ups 1171 private Vector<Integer> mKeysPressed; 1172 1173 /* package */ static boolean mLogEvent = true; 1174 1175 // for event log 1176 private long mLastTouchUpTime = 0; 1177 1178 private WebViewCore.AutoFillData mAutoFillData; 1179 1180 private static boolean sNotificationsEnabled = true; 1181 1182 /** 1183 * URI scheme for telephone number 1184 */ 1185 public static final String SCHEME_TEL = "tel:"; 1186 /** 1187 * URI scheme for email address 1188 */ 1189 public static final String SCHEME_MAILTO = "mailto:"; 1190 /** 1191 * URI scheme for map address 1192 */ 1193 public static final String SCHEME_GEO = "geo:0,0?q="; 1194 1195 private int mBackgroundColor = Color.WHITE; 1196 1197 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 1198 private int mAutoScrollX = 0; 1199 private int mAutoScrollY = 0; 1200 private int mMinAutoScrollX = 0; 1201 private int mMaxAutoScrollX = 0; 1202 private int mMinAutoScrollY = 0; 1203 private int mMaxAutoScrollY = 0; 1204 private Rect mScrollingLayerBounds = new Rect(); 1205 private boolean mSentAutoScrollMessage = false; 1206 1207 // used for serializing asynchronously handled touch events. 1208 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 1209 1210 // Used to track whether picture updating was paused due to a window focus change. 1211 private boolean mPictureUpdatePausedForFocusChange = false; 1212 1213 // Used to notify listeners of a new picture. 1214 private PictureListener mPictureListener; 1215 /** 1216 * Interface to listen for new pictures as they change. 1217 * @deprecated This interface is now obsolete. 1218 */ 1219 @Deprecated 1220 public interface PictureListener { 1221 /** 1222 * Notify the listener that the picture has changed. 1223 * @param view The WebView that owns the picture. 1224 * @param picture The new picture. 1225 * @deprecated Due to internal changes, the picture does not include 1226 * composited layers such as fixed position elements or scrollable divs. 1227 * While the PictureListener API can still be used to detect changes in 1228 * the WebView content, you are advised against its usage until a replacement 1229 * is provided in a future Android release 1230 */ 1231 @Deprecated 1232 public void onNewPicture(WebView view, Picture picture); 1233 } 1234 1235 public static class HitTestResult { 1236 /** 1237 * Default HitTestResult, where the target is unknown 1238 */ 1239 public static final int UNKNOWN_TYPE = 0; 1240 /** 1241 * @deprecated This type is no longer used. 1242 */ 1243 @Deprecated 1244 public static final int ANCHOR_TYPE = 1; 1245 /** 1246 * HitTestResult for hitting a phone number 1247 */ 1248 public static final int PHONE_TYPE = 2; 1249 /** 1250 * HitTestResult for hitting a map address 1251 */ 1252 public static final int GEO_TYPE = 3; 1253 /** 1254 * HitTestResult for hitting an email address 1255 */ 1256 public static final int EMAIL_TYPE = 4; 1257 /** 1258 * HitTestResult for hitting an HTML::img tag 1259 */ 1260 public static final int IMAGE_TYPE = 5; 1261 /** 1262 * @deprecated This type is no longer used. 1263 */ 1264 @Deprecated 1265 public static final int IMAGE_ANCHOR_TYPE = 6; 1266 /** 1267 * HitTestResult for hitting a HTML::a tag with src=http 1268 */ 1269 public static final int SRC_ANCHOR_TYPE = 7; 1270 /** 1271 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 1272 */ 1273 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 1274 /** 1275 * HitTestResult for hitting an edit text area 1276 */ 1277 public static final int EDIT_TEXT_TYPE = 9; 1278 1279 private int mType; 1280 private String mExtra; 1281 1282 HitTestResult() { 1283 mType = UNKNOWN_TYPE; 1284 } 1285 1286 private void setType(int type) { 1287 mType = type; 1288 } 1289 1290 private void setExtra(String extra) { 1291 mExtra = extra; 1292 } 1293 1294 /** 1295 * Gets the type of the hit test result. 1296 * @return See the XXX_TYPE constants defined in this class. 1297 */ 1298 public int getType() { 1299 return mType; 1300 } 1301 1302 /** 1303 * Gets additional type-dependant information about the result, see 1304 * {@link WebView#getHitTestResult()} for details. 1305 * @return may either be null or contain extra information about this result. 1306 */ 1307 public String getExtra() { 1308 return mExtra; 1309 } 1310 } 1311 1312 /** 1313 * Refer to {@link WebView#requestFocusNodeHref(Message)} for more information 1314 */ 1315 static class FocusNodeHref { 1316 static final String TITLE = "title"; 1317 static final String URL = "url"; 1318 static final String SRC = "src"; 1319 } 1320 1321 /** 1322 * Construct a new WebView with a Context object. 1323 * @param context A Context object used to access application assets. 1324 */ 1325 public WebView(Context context) { 1326 this(context, null); 1327 } 1328 1329 /** 1330 * Construct a new WebView with layout parameters. 1331 * @param context A Context object used to access application assets. 1332 * @param attrs An AttributeSet passed to our parent. 1333 */ 1334 public WebView(Context context, AttributeSet attrs) { 1335 this(context, attrs, com.android.internal.R.attr.webViewStyle); 1336 } 1337 1338 /** 1339 * Construct a new WebView with layout parameters and a default style. 1340 * @param context A Context object used to access application assets. 1341 * @param attrs An AttributeSet passed to our parent. 1342 * @param defStyle The default style resource ID. 1343 */ 1344 public WebView(Context context, AttributeSet attrs, int defStyle) { 1345 this(context, attrs, defStyle, false); 1346 } 1347 1348 /** 1349 * Construct a new WebView with layout parameters and a default style. 1350 * @param context A Context object used to access application assets. 1351 * @param attrs An AttributeSet passed to our parent. 1352 * @param defStyle The default style resource ID. 1353 * @param privateBrowsing If true the web view will be initialized in private mode. 1354 */ 1355 public WebView(Context context, AttributeSet attrs, int defStyle, 1356 boolean privateBrowsing) { 1357 this(context, attrs, defStyle, null, privateBrowsing); 1358 } 1359 1360 /** 1361 * Construct a new WebView with layout parameters, a default style and a set 1362 * of custom Javscript interfaces to be added to the WebView at initialization 1363 * time. This guarantees that these interfaces will be available when the JS 1364 * context is initialized. 1365 * @param context A Context object used to access application assets. 1366 * @param attrs An AttributeSet passed to our parent. 1367 * @param defStyle The default style resource ID. 1368 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1369 * object implementing those interfaces, as values. 1370 * @param privateBrowsing If true the web view will be initialized in private mode. 1371 * @hide This is an implementation detail. 1372 */ 1373 protected WebView(Context context, AttributeSet attrs, int defStyle, 1374 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1375 super(context, attrs, defStyle); 1376 checkThread(); 1377 1378 if (context == null) { 1379 throw new IllegalArgumentException("Invalid context argument"); 1380 } 1381 1382 // Used by the chrome stack to find application paths 1383 JniUtil.setContext(context); 1384 1385 mCallbackProxy = new CallbackProxy(context, this); 1386 mViewManager = new ViewManager(this); 1387 L10nUtils.setApplicationContext(context.getApplicationContext()); 1388 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1389 mDatabase = WebViewDatabase.getInstance(context); 1390 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1391 mZoomManager = new ZoomManager(this, mCallbackProxy); 1392 1393 /* The init method must follow the creation of certain member variables, 1394 * such as the mZoomManager. 1395 */ 1396 init(); 1397 setupPackageListener(context); 1398 setupProxyListener(context); 1399 setupTrustStorageListener(context); 1400 updateMultiTouchSupport(context); 1401 1402 if (privateBrowsing) { 1403 startPrivateBrowsing(); 1404 } 1405 1406 mAutoFillData = new WebViewCore.AutoFillData(); 1407 } 1408 1409 private static class TrustStorageListener extends BroadcastReceiver { 1410 @Override 1411 public void onReceive(Context context, Intent intent) { 1412 if (intent.getAction().equals(KeyChain.ACTION_STORAGE_CHANGED)) { 1413 handleCertTrustChanged(); 1414 } 1415 } 1416 } 1417 private static TrustStorageListener sTrustStorageListener; 1418 1419 /** 1420 * Handles update to the trust storage. 1421 */ 1422 private static void handleCertTrustChanged() { 1423 // send a message for indicating trust storage change 1424 WebViewCore.sendStaticMessage(EventHub.TRUST_STORAGE_UPDATED, null); 1425 } 1426 1427 /* 1428 * @param context This method expects this to be a valid context. 1429 */ 1430 private static void setupTrustStorageListener(Context context) { 1431 if (sTrustStorageListener != null ) { 1432 return; 1433 } 1434 IntentFilter filter = new IntentFilter(); 1435 filter.addAction(KeyChain.ACTION_STORAGE_CHANGED); 1436 sTrustStorageListener = new TrustStorageListener(); 1437 Intent current = 1438 context.getApplicationContext().registerReceiver(sTrustStorageListener, filter); 1439 if (current != null) { 1440 handleCertTrustChanged(); 1441 } 1442 } 1443 1444 private static class ProxyReceiver extends BroadcastReceiver { 1445 @Override 1446 public void onReceive(Context context, Intent intent) { 1447 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1448 handleProxyBroadcast(intent); 1449 } 1450 } 1451 } 1452 1453 /* 1454 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1455 */ 1456 private static ProxyReceiver sProxyReceiver; 1457 1458 /* 1459 * @param context This method expects this to be a valid context 1460 */ 1461 private static synchronized void setupProxyListener(Context context) { 1462 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1463 return; 1464 } 1465 IntentFilter filter = new IntentFilter(); 1466 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1467 sProxyReceiver = new ProxyReceiver(); 1468 Intent currentProxy = context.getApplicationContext().registerReceiver( 1469 sProxyReceiver, filter); 1470 if (currentProxy != null) { 1471 handleProxyBroadcast(currentProxy); 1472 } 1473 } 1474 1475 /* 1476 * @param context This method expects this to be a valid context 1477 */ 1478 private static synchronized void disableProxyListener(Context context) { 1479 if (sProxyReceiver == null) 1480 return; 1481 1482 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1483 sProxyReceiver = null; 1484 } 1485 1486 private static void handleProxyBroadcast(Intent intent) { 1487 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1488 if (proxyProperties == null || proxyProperties.getHost() == null) { 1489 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1490 return; 1491 } 1492 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1493 } 1494 1495 /* 1496 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1497 * or ACTION_PACKAGE_REMOVED. 1498 */ 1499 private static boolean sPackageInstallationReceiverAdded = false; 1500 1501 /* 1502 * A set of Google packages we monitor for the 1503 * navigator.isApplicationInstalled() API. Add additional packages as 1504 * needed. 1505 */ 1506 private static Set<String> sGoogleApps; 1507 static { 1508 sGoogleApps = new HashSet<String>(); 1509 sGoogleApps.add("com.google.android.youtube"); 1510 } 1511 1512 private static class PackageListener extends BroadcastReceiver { 1513 @Override 1514 public void onReceive(Context context, Intent intent) { 1515 final String action = intent.getAction(); 1516 final String packageName = intent.getData().getSchemeSpecificPart(); 1517 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1518 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1519 // if it is replacing, refreshPlugins() when adding 1520 return; 1521 } 1522 1523 if (sGoogleApps.contains(packageName)) { 1524 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1525 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1526 } else { 1527 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1528 } 1529 } 1530 1531 PluginManager pm = PluginManager.getInstance(context); 1532 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1533 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1534 } 1535 } 1536 } 1537 1538 private void setupPackageListener(Context context) { 1539 1540 /* 1541 * we must synchronize the instance check and the creation of the 1542 * receiver to ensure that only ONE receiver exists for all WebView 1543 * instances. 1544 */ 1545 synchronized (WebView.class) { 1546 1547 // if the receiver already exists then we do not need to register it 1548 // again 1549 if (sPackageInstallationReceiverAdded) { 1550 return; 1551 } 1552 1553 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1554 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1555 filter.addDataScheme("package"); 1556 BroadcastReceiver packageListener = new PackageListener(); 1557 context.getApplicationContext().registerReceiver(packageListener, filter); 1558 sPackageInstallationReceiverAdded = true; 1559 } 1560 1561 // check if any of the monitored apps are already installed 1562 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1563 1564 @Override 1565 protected Set<String> doInBackground(Void... unused) { 1566 Set<String> installedPackages = new HashSet<String>(); 1567 PackageManager pm = mContext.getPackageManager(); 1568 for (String name : sGoogleApps) { 1569 try { 1570 pm.getPackageInfo(name, 1571 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1572 installedPackages.add(name); 1573 } catch (PackageManager.NameNotFoundException e) { 1574 // package not found 1575 } 1576 } 1577 return installedPackages; 1578 } 1579 1580 // Executes on the UI thread 1581 @Override 1582 protected void onPostExecute(Set<String> installedPackages) { 1583 if (mWebViewCore != null) { 1584 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1585 } 1586 } 1587 }; 1588 task.execute(); 1589 } 1590 1591 void updateMultiTouchSupport(Context context) { 1592 mZoomManager.updateMultiTouchSupport(context); 1593 } 1594 1595 private void init() { 1596 OnTrimMemoryListener.init(getContext()); 1597 sDisableNavcache = nativeDisableNavcache(); 1598 setWillNotDraw(false); 1599 setFocusable(true); 1600 setFocusableInTouchMode(true); 1601 setClickable(true); 1602 setLongClickable(true); 1603 1604 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1605 int slop = configuration.getScaledTouchSlop(); 1606 mTouchSlopSquare = slop * slop; 1607 slop = configuration.getScaledDoubleTapSlop(); 1608 mDoubleTapSlopSquare = slop * slop; 1609 final float density = getContext().getResources().getDisplayMetrics().density; 1610 // use one line height, 16 based on our current default font, for how 1611 // far we allow a touch be away from the edge of a link 1612 mNavSlop = (int) (16 * density); 1613 mZoomManager.init(density); 1614 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1615 1616 // Compute the inverse of the density squared. 1617 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1618 1619 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1620 mOverflingDistance = configuration.getScaledOverflingDistance(); 1621 1622 setScrollBarStyle(super.getScrollBarStyle()); 1623 // Initially use a size of two, since the user is likely to only hold 1624 // down two keys at a time (shift + another key) 1625 mKeysPressed = new Vector<Integer>(2); 1626 mHTML5VideoViewProxy = null ; 1627 } 1628 1629 @Override 1630 public boolean shouldDelayChildPressedState() { 1631 return true; 1632 } 1633 1634 /** 1635 * Adds accessibility APIs to JavaScript. 1636 * 1637 * Note: This method is responsible to performing the necessary 1638 * check if the accessibility APIs should be exposed. 1639 */ 1640 private void addAccessibilityApisToJavaScript() { 1641 if (AccessibilityManager.getInstance(mContext).isEnabled() 1642 && getSettings().getJavaScriptEnabled()) { 1643 // exposing the TTS for now ... 1644 final Context ctx = getContext(); 1645 if (ctx != null) { 1646 final String packageName = ctx.getPackageName(); 1647 if (packageName != null) { 1648 mTextToSpeech = new TextToSpeech(getContext(), null, null, 1649 packageName + ".**webview**", true); 1650 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1651 } 1652 } 1653 } 1654 } 1655 1656 /** 1657 * Removes accessibility APIs from JavaScript. 1658 */ 1659 private void removeAccessibilityApisFromJavaScript() { 1660 // exposing the TTS for now ... 1661 if (mTextToSpeech != null) { 1662 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1663 mTextToSpeech.shutdown(); 1664 mTextToSpeech = null; 1665 } 1666 } 1667 1668 @Override 1669 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 1670 super.onInitializeAccessibilityNodeInfo(info); 1671 info.setScrollable(isScrollableForAccessibility()); 1672 } 1673 1674 @Override 1675 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 1676 super.onInitializeAccessibilityEvent(event); 1677 event.setScrollable(isScrollableForAccessibility()); 1678 event.setScrollX(mScrollX); 1679 event.setScrollY(mScrollY); 1680 final int convertedContentWidth = contentToViewX(getContentWidth()); 1681 final int adjustedViewWidth = getWidth() - mPaddingLeft - mPaddingRight; 1682 event.setMaxScrollX(Math.max(convertedContentWidth - adjustedViewWidth, 0)); 1683 final int convertedContentHeight = contentToViewY(getContentHeight()); 1684 final int adjustedViewHeight = getHeight() - mPaddingTop - mPaddingBottom; 1685 event.setMaxScrollY(Math.max(convertedContentHeight - adjustedViewHeight, 0)); 1686 } 1687 1688 private boolean isScrollableForAccessibility() { 1689 return (contentToViewX(getContentWidth()) > getWidth() - mPaddingLeft - mPaddingRight 1690 || contentToViewY(getContentHeight()) > getHeight() - mPaddingTop - mPaddingBottom); 1691 } 1692 1693 @Override 1694 public void setOverScrollMode(int mode) { 1695 super.setOverScrollMode(mode); 1696 if (mode != OVER_SCROLL_NEVER) { 1697 if (mOverScrollGlow == null) { 1698 mOverScrollGlow = new OverScrollGlow(this); 1699 } 1700 } else { 1701 mOverScrollGlow = null; 1702 } 1703 } 1704 1705 /* package */ void adjustDefaultZoomDensity(int zoomDensity) { 1706 final float density = mContext.getResources().getDisplayMetrics().density 1707 * 100 / zoomDensity; 1708 updateDefaultZoomDensity(density); 1709 } 1710 1711 /* package */ void updateDefaultZoomDensity(float density) { 1712 mNavSlop = (int) (16 * density); 1713 mZoomManager.updateDefaultZoomDensity(density); 1714 } 1715 1716 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1717 String password, final Message resumeMsg) { 1718 boolean rVal = false; 1719 if (resumeMsg == null) { 1720 // null resumeMsg implies saving password silently 1721 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1722 } else { 1723 final Message remember = mPrivateHandler.obtainMessage( 1724 REMEMBER_PASSWORD); 1725 remember.getData().putString("host", schemePlusHost); 1726 remember.getData().putString("username", username); 1727 remember.getData().putString("password", password); 1728 remember.obj = resumeMsg; 1729 1730 final Message neverRemember = mPrivateHandler.obtainMessage( 1731 NEVER_REMEMBER_PASSWORD); 1732 neverRemember.getData().putString("host", schemePlusHost); 1733 neverRemember.getData().putString("username", username); 1734 neverRemember.getData().putString("password", password); 1735 neverRemember.obj = resumeMsg; 1736 1737 new AlertDialog.Builder(getContext()) 1738 .setTitle(com.android.internal.R.string.save_password_label) 1739 .setMessage(com.android.internal.R.string.save_password_message) 1740 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1741 new DialogInterface.OnClickListener() { 1742 @Override 1743 public void onClick(DialogInterface dialog, int which) { 1744 resumeMsg.sendToTarget(); 1745 } 1746 }) 1747 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1748 new DialogInterface.OnClickListener() { 1749 @Override 1750 public void onClick(DialogInterface dialog, int which) { 1751 remember.sendToTarget(); 1752 } 1753 }) 1754 .setNegativeButton(com.android.internal.R.string.save_password_never, 1755 new DialogInterface.OnClickListener() { 1756 @Override 1757 public void onClick(DialogInterface dialog, int which) { 1758 neverRemember.sendToTarget(); 1759 } 1760 }) 1761 .setOnCancelListener(new OnCancelListener() { 1762 @Override 1763 public void onCancel(DialogInterface dialog) { 1764 resumeMsg.sendToTarget(); 1765 } 1766 }).show(); 1767 // Return true so that WebViewCore will pause while the dialog is 1768 // up. 1769 rVal = true; 1770 } 1771 return rVal; 1772 } 1773 1774 @Override 1775 public void setScrollBarStyle(int style) { 1776 if (style == View.SCROLLBARS_INSIDE_INSET 1777 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1778 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1779 } else { 1780 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1781 } 1782 super.setScrollBarStyle(style); 1783 } 1784 1785 /** 1786 * Specify whether the horizontal scrollbar has overlay style. 1787 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1788 */ 1789 public void setHorizontalScrollbarOverlay(boolean overlay) { 1790 checkThread(); 1791 mOverlayHorizontalScrollbar = overlay; 1792 } 1793 1794 /** 1795 * Specify whether the vertical scrollbar has overlay style. 1796 * @param overlay TRUE if vertical scrollbar should have overlay style. 1797 */ 1798 public void setVerticalScrollbarOverlay(boolean overlay) { 1799 checkThread(); 1800 mOverlayVerticalScrollbar = overlay; 1801 } 1802 1803 /** 1804 * Return whether horizontal scrollbar has overlay style 1805 * @return TRUE if horizontal scrollbar has overlay style. 1806 */ 1807 public boolean overlayHorizontalScrollbar() { 1808 checkThread(); 1809 return mOverlayHorizontalScrollbar; 1810 } 1811 1812 /** 1813 * Return whether vertical scrollbar has overlay style 1814 * @return TRUE if vertical scrollbar has overlay style. 1815 */ 1816 public boolean overlayVerticalScrollbar() { 1817 checkThread(); 1818 return mOverlayVerticalScrollbar; 1819 } 1820 1821 /* 1822 * Return the width of the view where the content of WebView should render 1823 * to. 1824 * Note: this can be called from WebCoreThread. 1825 */ 1826 /* package */ int getViewWidth() { 1827 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1828 return getWidth(); 1829 } else { 1830 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1831 } 1832 } 1833 1834 /** 1835 * Returns the height (in pixels) of the embedded title bar (if any). Does not care about 1836 * scrolling 1837 * @hide 1838 */ 1839 protected int getTitleHeight() { 1840 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1841 } 1842 1843 /** 1844 * Return the visible height (in pixels) of the embedded title bar (if any). 1845 * 1846 * @return This method is obsolete and always returns 0. 1847 * @deprecated This method is now obsolete. 1848 */ 1849 @Deprecated 1850 public int getVisibleTitleHeight() { 1851 // Actually, this method returns the height of the embedded title bar if one is set via the 1852 // hidden setEmbeddedTitleBar method. 1853 checkThread(); 1854 return getVisibleTitleHeightImpl(); 1855 } 1856 1857 private int getVisibleTitleHeightImpl() { 1858 // need to restrict mScrollY due to over scroll 1859 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 1860 getOverlappingActionModeHeight()); 1861 } 1862 1863 private int mCachedOverlappingActionModeHeight = -1; 1864 1865 private int getOverlappingActionModeHeight() { 1866 if (mFindCallback == null) { 1867 return 0; 1868 } 1869 if (mCachedOverlappingActionModeHeight < 0) { 1870 getGlobalVisibleRect(mGlobalVisibleRect, mGlobalVisibleOffset); 1871 mCachedOverlappingActionModeHeight = Math.max(0, 1872 mFindCallback.getActionModeGlobalBottom() - mGlobalVisibleRect.top); 1873 } 1874 return mCachedOverlappingActionModeHeight; 1875 } 1876 1877 /* 1878 * Return the height of the view where the content of WebView should render 1879 * to. Note that this excludes mTitleBar, if there is one. 1880 * Note: this can be called from WebCoreThread. 1881 */ 1882 /* package */ int getViewHeight() { 1883 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1884 } 1885 1886 int getViewHeightWithTitle() { 1887 int height = getHeight(); 1888 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1889 height -= getHorizontalScrollbarHeight(); 1890 } 1891 return height; 1892 } 1893 1894 /** 1895 * @return The SSL certificate for the main top-level page or null if 1896 * there is no certificate (the site is not secure). 1897 */ 1898 public SslCertificate getCertificate() { 1899 checkThread(); 1900 return mCertificate; 1901 } 1902 1903 /** 1904 * Sets the SSL certificate for the main top-level page. 1905 */ 1906 public void setCertificate(SslCertificate certificate) { 1907 checkThread(); 1908 if (DebugFlags.WEB_VIEW) { 1909 Log.v(LOGTAG, "setCertificate=" + certificate); 1910 } 1911 // here, the certificate can be null (if the site is not secure) 1912 mCertificate = certificate; 1913 } 1914 1915 //------------------------------------------------------------------------- 1916 // Methods called by activity 1917 //------------------------------------------------------------------------- 1918 1919 /** 1920 * Save the username and password for a particular host in the WebView's 1921 * internal database. 1922 * @param host The host that required the credentials. 1923 * @param username The username for the given host. 1924 * @param password The password for the given host. 1925 */ 1926 public void savePassword(String host, String username, String password) { 1927 checkThread(); 1928 mDatabase.setUsernamePassword(host, username, password); 1929 } 1930 1931 /** 1932 * Set the HTTP authentication credentials for a given host and realm. 1933 * 1934 * @param host The host for the credentials. 1935 * @param realm The realm for the credentials. 1936 * @param username The username for the password. If it is null, it means 1937 * password can't be saved. 1938 * @param password The password 1939 */ 1940 public void setHttpAuthUsernamePassword(String host, String realm, 1941 String username, String password) { 1942 checkThread(); 1943 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1944 } 1945 1946 /** 1947 * Retrieve the HTTP authentication username and password for a given 1948 * host & realm pair 1949 * 1950 * @param host The host for which the credentials apply. 1951 * @param realm The realm for which the credentials apply. 1952 * @return String[] if found, String[0] is username, which can be null and 1953 * String[1] is password. Return null if it can't find anything. 1954 */ 1955 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1956 checkThread(); 1957 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1958 } 1959 1960 /** 1961 * Remove Find or Select ActionModes, if active. 1962 */ 1963 private void clearActionModes() { 1964 if (mSelectCallback != null) { 1965 mSelectCallback.finish(); 1966 } 1967 if (mFindCallback != null) { 1968 mFindCallback.finish(); 1969 } 1970 } 1971 1972 /** 1973 * Called to clear state when moving from one page to another, or changing 1974 * in some other way that makes elements associated with the current page 1975 * (such as WebTextView or ActionModes) no longer relevant. 1976 */ 1977 private void clearHelpers() { 1978 clearTextEntry(); 1979 clearActionModes(); 1980 dismissFullScreenMode(); 1981 cancelSelectDialog(); 1982 } 1983 1984 private void cancelSelectDialog() { 1985 if (mListBoxDialog != null) { 1986 mListBoxDialog.cancel(); 1987 mListBoxDialog = null; 1988 } 1989 } 1990 1991 /** 1992 * Destroy the internal state of the WebView. This method should be called 1993 * after the WebView has been removed from the view system. No other 1994 * methods may be called on a WebView after destroy. 1995 */ 1996 public void destroy() { 1997 checkThread(); 1998 destroyImpl(); 1999 } 2000 2001 private void destroyImpl() { 2002 clearHelpers(); 2003 if (mListBoxDialog != null) { 2004 mListBoxDialog.dismiss(); 2005 mListBoxDialog = null; 2006 } 2007 // remove so that it doesn't cause events 2008 if (mWebTextView != null) { 2009 mWebTextView.remove(); 2010 mWebTextView = null; 2011 } 2012 if (mNativeClass != 0) nativeStopGL(); 2013 if (mWebViewCore != null) { 2014 // Set the handlers to null before destroying WebViewCore so no 2015 // more messages will be posted. 2016 mCallbackProxy.setWebViewClient(null); 2017 mCallbackProxy.setWebChromeClient(null); 2018 // Tell WebViewCore to destroy itself 2019 synchronized (this) { 2020 WebViewCore webViewCore = mWebViewCore; 2021 mWebViewCore = null; // prevent using partial webViewCore 2022 webViewCore.destroy(); 2023 } 2024 // Remove any pending messages that might not be serviced yet. 2025 mPrivateHandler.removeCallbacksAndMessages(null); 2026 mCallbackProxy.removeCallbacksAndMessages(null); 2027 // Wake up the WebCore thread just in case it is waiting for a 2028 // JavaScript dialog. 2029 synchronized (mCallbackProxy) { 2030 mCallbackProxy.notify(); 2031 } 2032 } 2033 if (mNativeClass != 0) { 2034 nativeDestroy(); 2035 mNativeClass = 0; 2036 } 2037 } 2038 2039 /** 2040 * Enables platform notifications of data state and proxy changes. 2041 * Notifications are enabled by default. 2042 * 2043 * @deprecated This method is now obsolete. 2044 */ 2045 @Deprecated 2046 public static void enablePlatformNotifications() { 2047 checkThread(); 2048 synchronized (WebView.class) { 2049 sNotificationsEnabled = true; 2050 Context context = JniUtil.getContext(); 2051 if (context != null) 2052 setupProxyListener(context); 2053 } 2054 } 2055 2056 /** 2057 * Disables platform notifications of data state and proxy changes. 2058 * Notifications are enabled by default. 2059 * 2060 * @deprecated This method is now obsolete. 2061 */ 2062 @Deprecated 2063 public static void disablePlatformNotifications() { 2064 checkThread(); 2065 synchronized (WebView.class) { 2066 sNotificationsEnabled = false; 2067 Context context = JniUtil.getContext(); 2068 if (context != null) 2069 disableProxyListener(context); 2070 } 2071 } 2072 2073 /** 2074 * Sets JavaScript engine flags. 2075 * 2076 * @param flags JS engine flags in a String 2077 * 2078 * @hide This is an implementation detail. 2079 */ 2080 public void setJsFlags(String flags) { 2081 checkThread(); 2082 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 2083 } 2084 2085 /** 2086 * Inform WebView of the network state. This is used to set 2087 * the JavaScript property window.navigator.isOnline and 2088 * generates the online/offline event as specified in HTML5, sec. 5.7.7 2089 * @param networkUp boolean indicating if network is available 2090 */ 2091 public void setNetworkAvailable(boolean networkUp) { 2092 checkThread(); 2093 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 2094 networkUp ? 1 : 0, 0); 2095 } 2096 2097 /** 2098 * Inform WebView about the current network type. 2099 * {@hide} 2100 */ 2101 public void setNetworkType(String type, String subtype) { 2102 checkThread(); 2103 Map<String, String> map = new HashMap<String, String>(); 2104 map.put("type", type); 2105 map.put("subtype", subtype); 2106 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 2107 } 2108 /** 2109 * Save the state of this WebView used in 2110 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 2111 * method no longer stores the display data for this WebView. The previous 2112 * behavior could potentially leak files if {@link #restoreState} was never 2113 * called. See {@link #savePicture} and {@link #restorePicture} for saving 2114 * and restoring the display data. 2115 * @param outState The Bundle to store the WebView state. 2116 * @return The same copy of the back/forward list used to save the state. If 2117 * saveState fails, the returned list will be null. 2118 * @see #savePicture 2119 * @see #restorePicture 2120 */ 2121 public WebBackForwardList saveState(Bundle outState) { 2122 checkThread(); 2123 if (outState == null) { 2124 return null; 2125 } 2126 // We grab a copy of the back/forward list because a client of WebView 2127 // may have invalidated the history list by calling clearHistory. 2128 WebBackForwardList list = copyBackForwardList(); 2129 final int currentIndex = list.getCurrentIndex(); 2130 final int size = list.getSize(); 2131 // We should fail saving the state if the list is empty or the index is 2132 // not in a valid range. 2133 if (currentIndex < 0 || currentIndex >= size || size == 0) { 2134 return null; 2135 } 2136 outState.putInt("index", currentIndex); 2137 // FIXME: This should just be a byte[][] instead of ArrayList but 2138 // Parcel.java does not have the code to handle multi-dimensional 2139 // arrays. 2140 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 2141 for (int i = 0; i < size; i++) { 2142 WebHistoryItem item = list.getItemAtIndex(i); 2143 if (null == item) { 2144 // FIXME: this shouldn't happen 2145 // need to determine how item got set to null 2146 Log.w(LOGTAG, "saveState: Unexpected null history item."); 2147 return null; 2148 } 2149 byte[] data = item.getFlattenedData(); 2150 if (data == null) { 2151 // It would be very odd to not have any data for a given history 2152 // item. And we will fail to rebuild the history list without 2153 // flattened data. 2154 return null; 2155 } 2156 history.add(data); 2157 } 2158 outState.putSerializable("history", history); 2159 if (mCertificate != null) { 2160 outState.putBundle("certificate", 2161 SslCertificate.saveState(mCertificate)); 2162 } 2163 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 2164 mZoomManager.saveZoomState(outState); 2165 return list; 2166 } 2167 2168 /** 2169 * Save the current display data to the Bundle given. Used in conjunction 2170 * with {@link #saveState}. 2171 * @param b A Bundle to store the display data. 2172 * @param dest The file to store the serialized picture data. Will be 2173 * overwritten with this WebView's picture data. 2174 * @return True if the picture was successfully saved. 2175 * @deprecated This method is now obsolete. 2176 */ 2177 @Deprecated 2178 public boolean savePicture(Bundle b, final File dest) { 2179 checkThread(); 2180 if (dest == null || b == null) { 2181 return false; 2182 } 2183 final Picture p = capturePicture(); 2184 // Use a temporary file while writing to ensure the destination file 2185 // contains valid data. 2186 final File temp = new File(dest.getPath() + ".writing"); 2187 new Thread(new Runnable() { 2188 @Override 2189 public void run() { 2190 FileOutputStream out = null; 2191 try { 2192 out = new FileOutputStream(temp); 2193 p.writeToStream(out); 2194 // Writing the picture succeeded, rename the temporary file 2195 // to the destination. 2196 temp.renameTo(dest); 2197 } catch (Exception e) { 2198 // too late to do anything about it. 2199 } finally { 2200 if (out != null) { 2201 try { 2202 out.close(); 2203 } catch (Exception e) { 2204 // Can't do anything about that 2205 } 2206 } 2207 temp.delete(); 2208 } 2209 } 2210 }).start(); 2211 // now update the bundle 2212 b.putInt("scrollX", mScrollX); 2213 b.putInt("scrollY", mScrollY); 2214 mZoomManager.saveZoomState(b); 2215 return true; 2216 } 2217 2218 private void restoreHistoryPictureFields(Picture p, Bundle b) { 2219 int sx = b.getInt("scrollX", 0); 2220 int sy = b.getInt("scrollY", 0); 2221 2222 mDrawHistory = true; 2223 mHistoryPicture = p; 2224 2225 mScrollX = sx; 2226 mScrollY = sy; 2227 mZoomManager.restoreZoomState(b); 2228 final float scale = mZoomManager.getScale(); 2229 mHistoryWidth = Math.round(p.getWidth() * scale); 2230 mHistoryHeight = Math.round(p.getHeight() * scale); 2231 2232 invalidate(); 2233 } 2234 2235 /** 2236 * Restore the display data that was save in {@link #savePicture}. Used in 2237 * conjunction with {@link #restoreState}. 2238 * 2239 * Note that this will not work if the WebView is hardware accelerated. 2240 * @param b A Bundle containing the saved display data. 2241 * @param src The file where the picture data was stored. 2242 * @return True if the picture was successfully restored. 2243 * @deprecated This method is now obsolete. 2244 */ 2245 @Deprecated 2246 public boolean restorePicture(Bundle b, File src) { 2247 checkThread(); 2248 if (src == null || b == null) { 2249 return false; 2250 } 2251 if (!src.exists()) { 2252 return false; 2253 } 2254 try { 2255 final FileInputStream in = new FileInputStream(src); 2256 final Bundle copy = new Bundle(b); 2257 new Thread(new Runnable() { 2258 @Override 2259 public void run() { 2260 try { 2261 final Picture p = Picture.createFromStream(in); 2262 if (p != null) { 2263 // Post a runnable on the main thread to update the 2264 // history picture fields. 2265 mPrivateHandler.post(new Runnable() { 2266 @Override 2267 public void run() { 2268 restoreHistoryPictureFields(p, copy); 2269 } 2270 }); 2271 } 2272 } finally { 2273 try { 2274 in.close(); 2275 } catch (Exception e) { 2276 // Nothing we can do now. 2277 } 2278 } 2279 } 2280 }).start(); 2281 } catch (FileNotFoundException e){ 2282 e.printStackTrace(); 2283 } 2284 return true; 2285 } 2286 2287 /** 2288 * Saves the view data to the output stream. The output is highly 2289 * version specific, and may not be able to be loaded by newer versions 2290 * of WebView. 2291 * @param stream The {@link OutputStream} to save to 2292 * @return True if saved successfully 2293 * @hide 2294 */ 2295 public boolean saveViewState(OutputStream stream) { 2296 try { 2297 return ViewStateSerializer.serializeViewState(stream, this); 2298 } catch (IOException e) { 2299 Log.w(LOGTAG, "Failed to saveViewState", e); 2300 } 2301 return false; 2302 } 2303 2304 /** 2305 * Loads the view data from the input stream. See 2306 * {@link #saveViewState(OutputStream)} for more information. 2307 * @param stream The {@link InputStream} to load from 2308 * @return True if loaded successfully 2309 * @hide 2310 */ 2311 public boolean loadViewState(InputStream stream) { 2312 try { 2313 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 2314 mBlockWebkitViewMessages = true; 2315 setNewPicture(mLoadedPicture, true); 2316 mLoadedPicture.mViewState = null; 2317 return true; 2318 } catch (IOException e) { 2319 Log.w(LOGTAG, "Failed to loadViewState", e); 2320 } 2321 return false; 2322 } 2323 2324 /** 2325 * Clears the view state set with {@link #loadViewState(InputStream)}. 2326 * This WebView will then switch to showing the content from webkit 2327 * @hide 2328 */ 2329 public void clearViewState() { 2330 mBlockWebkitViewMessages = false; 2331 mLoadedPicture = null; 2332 invalidate(); 2333 } 2334 2335 /** 2336 * Restore the state of this WebView from the given map used in 2337 * {@link android.app.Activity#onRestoreInstanceState}. This method should 2338 * be called to restore the state of the WebView before using the object. If 2339 * it is called after the WebView has had a chance to build state (load 2340 * pages, create a back/forward list, etc.) there may be undesirable 2341 * side-effects. Please note that this method no longer restores the 2342 * display data for this WebView. See {@link #savePicture} and {@link 2343 * #restorePicture} for saving and restoring the display data. 2344 * @param inState The incoming Bundle of state. 2345 * @return The restored back/forward list or null if restoreState failed. 2346 * @see #savePicture 2347 * @see #restorePicture 2348 */ 2349 public WebBackForwardList restoreState(Bundle inState) { 2350 checkThread(); 2351 WebBackForwardList returnList = null; 2352 if (inState == null) { 2353 return returnList; 2354 } 2355 if (inState.containsKey("index") && inState.containsKey("history")) { 2356 mCertificate = SslCertificate.restoreState( 2357 inState.getBundle("certificate")); 2358 2359 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 2360 final int index = inState.getInt("index"); 2361 // We can't use a clone of the list because we need to modify the 2362 // shared copy, so synchronize instead to prevent concurrent 2363 // modifications. 2364 synchronized (list) { 2365 final List<byte[]> history = 2366 (List<byte[]>) inState.getSerializable("history"); 2367 final int size = history.size(); 2368 // Check the index bounds so we don't crash in native code while 2369 // restoring the history index. 2370 if (index < 0 || index >= size) { 2371 return null; 2372 } 2373 for (int i = 0; i < size; i++) { 2374 byte[] data = history.remove(0); 2375 if (data == null) { 2376 // If we somehow have null data, we cannot reconstruct 2377 // the item and thus our history list cannot be rebuilt. 2378 return null; 2379 } 2380 WebHistoryItem item = new WebHistoryItem(data); 2381 list.addHistoryItem(item); 2382 } 2383 // Grab the most recent copy to return to the caller. 2384 returnList = copyBackForwardList(); 2385 // Update the copy to have the correct index. 2386 returnList.setCurrentIndex(index); 2387 } 2388 // Restore private browsing setting. 2389 if (inState.getBoolean("privateBrowsingEnabled")) { 2390 getSettings().setPrivateBrowsingEnabled(true); 2391 } 2392 mZoomManager.restoreZoomState(inState); 2393 // Remove all pending messages because we are restoring previous 2394 // state. 2395 mWebViewCore.removeMessages(); 2396 // Send a restore state message. 2397 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 2398 } 2399 return returnList; 2400 } 2401 2402 /** 2403 * Load the given URL with the specified additional HTTP headers. 2404 * @param url The URL of the resource to load. 2405 * @param additionalHttpHeaders The additional headers to be used in the 2406 * HTTP request for this URL, specified as a map from name to 2407 * value. Note that if this map contains any of the headers 2408 * that are set by default by the WebView, such as those 2409 * controlling caching, accept types or the User-Agent, their 2410 * values may be overriden by the WebView's defaults. 2411 */ 2412 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 2413 checkThread(); 2414 loadUrlImpl(url, additionalHttpHeaders); 2415 } 2416 2417 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 2418 switchOutDrawHistory(); 2419 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 2420 arg.mUrl = url; 2421 arg.mExtraHeaders = extraHeaders; 2422 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 2423 clearHelpers(); 2424 } 2425 2426 /** 2427 * Load the given URL. 2428 * @param url The URL of the resource to load. 2429 */ 2430 public void loadUrl(String url) { 2431 checkThread(); 2432 loadUrlImpl(url); 2433 } 2434 2435 private void loadUrlImpl(String url) { 2436 if (url == null) { 2437 return; 2438 } 2439 loadUrlImpl(url, null); 2440 } 2441 2442 /** 2443 * Load the url with postData using "POST" method into the WebView. If url 2444 * is not a network url, it will be loaded with {link 2445 * {@link #loadUrl(String)} instead. 2446 * 2447 * @param url The url of the resource to load. 2448 * @param postData The data will be passed to "POST" request. 2449 */ 2450 public void postUrl(String url, byte[] postData) { 2451 checkThread(); 2452 if (URLUtil.isNetworkUrl(url)) { 2453 switchOutDrawHistory(); 2454 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2455 arg.mUrl = url; 2456 arg.mPostData = postData; 2457 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2458 clearHelpers(); 2459 } else { 2460 loadUrlImpl(url); 2461 } 2462 } 2463 2464 /** 2465 * Load the given data into the WebView using a 'data' scheme URL. 2466 * <p> 2467 * Note that JavaScript's same origin policy means that script running in a 2468 * page loaded using this method will be unable to access content loaded 2469 * using any scheme other than 'data', including 'http(s)'. To avoid this 2470 * restriction, use {@link 2471 * #loadDataWithBaseURL(String,String,String,String,String) 2472 * loadDataWithBaseURL()} with an appropriate base URL. 2473 * <p> 2474 * If the value of the encoding parameter is 'base64', then the data must 2475 * be encoded as base64. Otherwise, the data must use ASCII encoding for 2476 * octets inside the range of safe URL characters and use the standard %xx 2477 * hex encoding of URLs for octets outside that range. For example, 2478 * '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively. 2479 * <p> 2480 * The 'data' scheme URL formed by this method uses the default US-ASCII 2481 * charset. If you need need to set a different charset, you should form a 2482 * 'data' scheme URL which explicitly specifies a charset parameter in the 2483 * mediatype portion of the URL and call {@link #loadUrl(String)} instead. 2484 * Note that the charset obtained from the mediatype portion of a data URL 2485 * always overrides that specified in the HTML or XML document itself. 2486 * @param data A String of data in the given encoding. 2487 * @param mimeType The MIME type of the data, e.g. 'text/html'. 2488 * @param encoding The encoding of the data. 2489 */ 2490 public void loadData(String data, String mimeType, String encoding) { 2491 checkThread(); 2492 loadDataImpl(data, mimeType, encoding); 2493 } 2494 2495 private void loadDataImpl(String data, String mimeType, String encoding) { 2496 StringBuilder dataUrl = new StringBuilder("data:"); 2497 dataUrl.append(mimeType); 2498 if ("base64".equals(encoding)) { 2499 dataUrl.append(";base64"); 2500 } 2501 dataUrl.append(","); 2502 dataUrl.append(data); 2503 loadUrlImpl(dataUrl.toString()); 2504 } 2505 2506 /** 2507 * Load the given data into the WebView, using baseUrl as the base URL for 2508 * the content. The base URL is used both to resolve relative URLs and when 2509 * applying JavaScript's same origin policy. The historyUrl is used for the 2510 * history entry. 2511 * <p> 2512 * Note that content specified in this way can access local device files 2513 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2514 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2515 * <p> 2516 * If the base URL uses the data scheme, this method is equivalent to 2517 * calling {@link #loadData(String,String,String) loadData()} and the 2518 * historyUrl is ignored. 2519 * @param baseUrl URL to use as the page's base URL. If null defaults to 2520 * 'about:blank' 2521 * @param data A String of data in the given encoding. 2522 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2523 * defaults to 'text/html'. 2524 * @param encoding The encoding of the data. 2525 * @param historyUrl URL to use as the history entry, if null defaults to 2526 * 'about:blank'. 2527 */ 2528 public void loadDataWithBaseURL(String baseUrl, String data, 2529 String mimeType, String encoding, String historyUrl) { 2530 checkThread(); 2531 2532 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2533 loadDataImpl(data, mimeType, encoding); 2534 return; 2535 } 2536 switchOutDrawHistory(); 2537 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2538 arg.mBaseUrl = baseUrl; 2539 arg.mData = data; 2540 arg.mMimeType = mimeType; 2541 arg.mEncoding = encoding; 2542 arg.mHistoryUrl = historyUrl; 2543 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2544 clearHelpers(); 2545 } 2546 2547 /** 2548 * Saves the current view as a web archive. 2549 * 2550 * @param filename The filename where the archive should be placed. 2551 */ 2552 public void saveWebArchive(String filename) { 2553 checkThread(); 2554 saveWebArchiveImpl(filename, false, null); 2555 } 2556 2557 /* package */ static class SaveWebArchiveMessage { 2558 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2559 mBasename = basename; 2560 mAutoname = autoname; 2561 mCallback = callback; 2562 } 2563 2564 /* package */ final String mBasename; 2565 /* package */ final boolean mAutoname; 2566 /* package */ final ValueCallback<String> mCallback; 2567 /* package */ String mResultFile; 2568 } 2569 2570 /** 2571 * Saves the current view as a web archive. 2572 * 2573 * @param basename The filename where the archive should be placed. 2574 * @param autoname If false, takes basename to be a file. If true, basename 2575 * is assumed to be a directory in which a filename will be 2576 * chosen according to the url of the current page. 2577 * @param callback Called after the web archive has been saved. The 2578 * parameter for onReceiveValue will either be the filename 2579 * under which the file was saved, or null if saving the 2580 * file failed. 2581 */ 2582 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2583 checkThread(); 2584 saveWebArchiveImpl(basename, autoname, callback); 2585 } 2586 2587 private void saveWebArchiveImpl(String basename, boolean autoname, 2588 ValueCallback<String> callback) { 2589 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2590 new SaveWebArchiveMessage(basename, autoname, callback)); 2591 } 2592 2593 /** 2594 * Stop the current load. 2595 */ 2596 public void stopLoading() { 2597 checkThread(); 2598 // TODO: should we clear all the messages in the queue before sending 2599 // STOP_LOADING? 2600 switchOutDrawHistory(); 2601 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2602 } 2603 2604 /** 2605 * Reload the current url. 2606 */ 2607 public void reload() { 2608 checkThread(); 2609 clearHelpers(); 2610 switchOutDrawHistory(); 2611 mWebViewCore.sendMessage(EventHub.RELOAD); 2612 } 2613 2614 /** 2615 * Return true if this WebView has a back history item. 2616 * @return True iff this WebView has a back history item. 2617 */ 2618 public boolean canGoBack() { 2619 checkThread(); 2620 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2621 synchronized (l) { 2622 if (l.getClearPending()) { 2623 return false; 2624 } else { 2625 return l.getCurrentIndex() > 0; 2626 } 2627 } 2628 } 2629 2630 /** 2631 * Go back in the history of this WebView. 2632 */ 2633 public void goBack() { 2634 checkThread(); 2635 goBackOrForwardImpl(-1); 2636 } 2637 2638 /** 2639 * Return true if this WebView has a forward history item. 2640 * @return True iff this Webview has a forward history item. 2641 */ 2642 public boolean canGoForward() { 2643 checkThread(); 2644 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2645 synchronized (l) { 2646 if (l.getClearPending()) { 2647 return false; 2648 } else { 2649 return l.getCurrentIndex() < l.getSize() - 1; 2650 } 2651 } 2652 } 2653 2654 /** 2655 * Go forward in the history of this WebView. 2656 */ 2657 public void goForward() { 2658 checkThread(); 2659 goBackOrForwardImpl(1); 2660 } 2661 2662 /** 2663 * Return true if the page can go back or forward the given 2664 * number of steps. 2665 * @param steps The negative or positive number of steps to move the 2666 * history. 2667 */ 2668 public boolean canGoBackOrForward(int steps) { 2669 checkThread(); 2670 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2671 synchronized (l) { 2672 if (l.getClearPending()) { 2673 return false; 2674 } else { 2675 int newIndex = l.getCurrentIndex() + steps; 2676 return newIndex >= 0 && newIndex < l.getSize(); 2677 } 2678 } 2679 } 2680 2681 /** 2682 * Go to the history item that is the number of steps away from 2683 * the current item. Steps is negative if backward and positive 2684 * if forward. 2685 * @param steps The number of steps to take back or forward in the back 2686 * forward list. 2687 */ 2688 public void goBackOrForward(int steps) { 2689 checkThread(); 2690 goBackOrForwardImpl(steps); 2691 } 2692 2693 private void goBackOrForwardImpl(int steps) { 2694 goBackOrForward(steps, false); 2695 } 2696 2697 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2698 if (steps != 0) { 2699 clearHelpers(); 2700 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2701 ignoreSnapshot ? 1 : 0); 2702 } 2703 } 2704 2705 /** 2706 * Returns true if private browsing is enabled in this WebView. 2707 */ 2708 public boolean isPrivateBrowsingEnabled() { 2709 checkThread(); 2710 return getSettings().isPrivateBrowsingEnabled(); 2711 } 2712 2713 private void startPrivateBrowsing() { 2714 getSettings().setPrivateBrowsingEnabled(true); 2715 } 2716 2717 private boolean extendScroll(int y) { 2718 int finalY = mScroller.getFinalY(); 2719 int newY = pinLocY(finalY + y); 2720 if (newY == finalY) return false; 2721 mScroller.setFinalY(newY); 2722 mScroller.extendDuration(computeDuration(0, y)); 2723 return true; 2724 } 2725 2726 /** 2727 * Scroll the contents of the view up by half the view size 2728 * @param top true to jump to the top of the page 2729 * @return true if the page was scrolled 2730 */ 2731 public boolean pageUp(boolean top) { 2732 checkThread(); 2733 if (mNativeClass == 0) { 2734 return false; 2735 } 2736 nativeClearCursor(); // start next trackball movement from page edge 2737 if (top) { 2738 // go to the top of the document 2739 return pinScrollTo(mScrollX, 0, true, 0); 2740 } 2741 // Page up 2742 int h = getHeight(); 2743 int y; 2744 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2745 y = -h + PAGE_SCROLL_OVERLAP; 2746 } else { 2747 y = -h / 2; 2748 } 2749 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2750 : extendScroll(y); 2751 } 2752 2753 /** 2754 * Scroll the contents of the view down by half the page size 2755 * @param bottom true to jump to bottom of page 2756 * @return true if the page was scrolled 2757 */ 2758 public boolean pageDown(boolean bottom) { 2759 checkThread(); 2760 if (mNativeClass == 0) { 2761 return false; 2762 } 2763 nativeClearCursor(); // start next trackball movement from page edge 2764 if (bottom) { 2765 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2766 } 2767 // Page down. 2768 int h = getHeight(); 2769 int y; 2770 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2771 y = h - PAGE_SCROLL_OVERLAP; 2772 } else { 2773 y = h / 2; 2774 } 2775 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2776 : extendScroll(y); 2777 } 2778 2779 /** 2780 * Clear the view so that onDraw() will draw nothing but white background, 2781 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2782 */ 2783 public void clearView() { 2784 checkThread(); 2785 mContentWidth = 0; 2786 mContentHeight = 0; 2787 setBaseLayer(0, null, false, false); 2788 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2789 } 2790 2791 /** 2792 * Return a new picture that captures the current display of the webview. 2793 * This is a copy of the display, and will be unaffected if the webview 2794 * later loads a different URL. 2795 * 2796 * @return a picture containing the current contents of the view. Note this 2797 * picture is of the entire document, and is not restricted to the 2798 * bounds of the view. 2799 */ 2800 public Picture capturePicture() { 2801 checkThread(); 2802 if (mNativeClass == 0) return null; 2803 Picture result = new Picture(); 2804 nativeCopyBaseContentToPicture(result); 2805 return result; 2806 } 2807 2808 /** 2809 * Return true if the browser is displaying a TextView for text input. 2810 */ 2811 private boolean inEditingMode() { 2812 return mWebTextView != null && mWebTextView.getParent() != null; 2813 } 2814 2815 /** 2816 * Remove the WebTextView. 2817 */ 2818 private void clearTextEntry() { 2819 if (inEditingMode()) { 2820 mWebTextView.remove(); 2821 } else { 2822 // The keyboard may be open with the WebView as the served view 2823 hideSoftKeyboard(); 2824 } 2825 } 2826 2827 /** 2828 * Return the current scale of the WebView 2829 * @return The current scale. 2830 */ 2831 public float getScale() { 2832 checkThread(); 2833 return mZoomManager.getScale(); 2834 } 2835 2836 /** 2837 * Compute the reading level scale of the WebView 2838 * @param scale The current scale. 2839 * @return The reading level scale. 2840 */ 2841 /*package*/ float computeReadingLevelScale(float scale) { 2842 return mZoomManager.computeReadingLevelScale(scale); 2843 } 2844 2845 /** 2846 * Set the initial scale for the WebView. 0 means default. If 2847 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2848 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2849 * WebView starts with this value as initial scale. 2850 * Please note that unlike the scale properties in the viewport meta tag, 2851 * this method doesn't take the screen density into account. 2852 * 2853 * @param scaleInPercent The initial scale in percent. 2854 */ 2855 public void setInitialScale(int scaleInPercent) { 2856 checkThread(); 2857 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2858 } 2859 2860 /** 2861 * Invoke the graphical zoom picker widget for this WebView. This will 2862 * result in the zoom widget appearing on the screen to control the zoom 2863 * level of this WebView. 2864 */ 2865 public void invokeZoomPicker() { 2866 checkThread(); 2867 if (!getSettings().supportZoom()) { 2868 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2869 return; 2870 } 2871 clearHelpers(); 2872 mZoomManager.invokeZoomPicker(); 2873 } 2874 2875 /** 2876 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2877 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2878 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2879 * anchor does not have a url or if it is a JavaScript url, the type will 2880 * be UNKNOWN_TYPE and the url has to be retrieved through 2881 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2882 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2883 * the "extra" field. A type of 2884 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2885 * a child node. If a phone number is found, the HitTestResult type is set 2886 * to PHONE_TYPE and the phone number is set in the "extra" field of 2887 * HitTestResult. If a map address is found, the HitTestResult type is set 2888 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2889 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2890 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2891 * HitTestResult type is set to UNKNOWN_TYPE. 2892 */ 2893 public HitTestResult getHitTestResult() { 2894 checkThread(); 2895 return hitTestResult(mInitialHitTestResult); 2896 } 2897 2898 private HitTestResult hitTestResult(HitTestResult fallback) { 2899 if (mNativeClass == 0 || sDisableNavcache) { 2900 return fallback; 2901 } 2902 2903 HitTestResult result = new HitTestResult(); 2904 if (nativeHasCursorNode()) { 2905 if (nativeCursorIsTextInput()) { 2906 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2907 } else { 2908 String text = nativeCursorText(); 2909 if (text != null) { 2910 if (text.startsWith(SCHEME_TEL)) { 2911 result.setType(HitTestResult.PHONE_TYPE); 2912 result.setExtra(URLDecoder.decode(text 2913 .substring(SCHEME_TEL.length()))); 2914 } else if (text.startsWith(SCHEME_MAILTO)) { 2915 result.setType(HitTestResult.EMAIL_TYPE); 2916 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2917 } else if (text.startsWith(SCHEME_GEO)) { 2918 result.setType(HitTestResult.GEO_TYPE); 2919 result.setExtra(URLDecoder.decode(text 2920 .substring(SCHEME_GEO.length()))); 2921 } else if (nativeCursorIsAnchor()) { 2922 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2923 result.setExtra(text); 2924 } 2925 } 2926 } 2927 } else if (fallback != null) { 2928 /* If webkit causes a rebuild while the long press is in progress, 2929 * the cursor node may be reset, even if it is still around. This 2930 * uses the cursor node saved when the touch began. Since the 2931 * nativeImageURI below only changes the result if it is successful, 2932 * this uses the data beneath the touch if available or the original 2933 * tap data otherwise. 2934 */ 2935 Log.v(LOGTAG, "hitTestResult use fallback"); 2936 result = fallback; 2937 } 2938 int type = result.getType(); 2939 if (type == HitTestResult.UNKNOWN_TYPE 2940 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2941 // Now check to see if it is an image. 2942 int contentX = viewToContentX(mLastTouchX + mScrollX); 2943 int contentY = viewToContentY(mLastTouchY + mScrollY); 2944 String text = nativeImageURI(contentX, contentY); 2945 if (text != null) { 2946 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2947 HitTestResult.IMAGE_TYPE : 2948 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2949 result.setExtra(text); 2950 } 2951 } 2952 return result; 2953 } 2954 2955 int getBlockLeftEdge(int x, int y, float readingScale) { 2956 if (!sDisableNavcache) { 2957 return nativeGetBlockLeftEdge(x, y, readingScale); 2958 } 2959 2960 float invReadingScale = 1.0f / readingScale; 2961 int readingWidth = (int) (getViewWidth() * invReadingScale); 2962 int left = NO_LEFTEDGE; 2963 if (mFocusedNode != null) { 2964 final int length = mFocusedNode.mEnclosingParentRects.length; 2965 for (int i = 0; i < length; i++) { 2966 Rect rect = mFocusedNode.mEnclosingParentRects[i]; 2967 if (rect.width() < mFocusedNode.mHitTestSlop) { 2968 // ignore bounding boxes that are too small 2969 continue; 2970 } else if (left != NO_LEFTEDGE && rect.width() > readingWidth) { 2971 // stop when bounding box doesn't fit the screen width 2972 // at reading scale 2973 break; 2974 } 2975 2976 left = rect.left; 2977 } 2978 } 2979 2980 return left; 2981 } 2982 2983 // Called by JNI when the DOM has changed the focus. Clear the focus so 2984 // that new keys will go to the newly focused field 2985 private void domChangedFocus() { 2986 if (inEditingMode()) { 2987 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2988 } 2989 } 2990 /** 2991 * Request the anchor or image element URL at the last tapped point. 2992 * If hrefMsg is null, this method returns immediately and does not 2993 * dispatch hrefMsg to its target. If the tapped point hits an image, 2994 * an anchor, or an image in an anchor, the message associates 2995 * strings in named keys in its data. The value paired with the key 2996 * may be an empty string. 2997 * 2998 * @param hrefMsg This message will be dispatched with the result of the 2999 * request. The message data contains three keys: 3000 * - "url" returns the anchor's href attribute. 3001 * - "title" returns the anchor's text. 3002 * - "src" returns the image's src attribute. 3003 */ 3004 public void requestFocusNodeHref(Message hrefMsg) { 3005 checkThread(); 3006 if (hrefMsg == null) { 3007 return; 3008 } 3009 int contentX = viewToContentX(mLastTouchX + mScrollX); 3010 int contentY = viewToContentY(mLastTouchY + mScrollY); 3011 if (mFocusedNode != null && mFocusedNode.mHitTestX == contentX 3012 && mFocusedNode.mHitTestY == contentY) { 3013 hrefMsg.getData().putString(FocusNodeHref.URL, mFocusedNode.mLinkUrl); 3014 hrefMsg.getData().putString(FocusNodeHref.TITLE, mFocusedNode.mAnchorText); 3015 hrefMsg.getData().putString(FocusNodeHref.SRC, mFocusedNode.mImageUrl); 3016 hrefMsg.sendToTarget(); 3017 return; 3018 } 3019 if (nativeHasCursorNode()) { 3020 Rect cursorBounds = nativeGetCursorRingBounds(); 3021 if (!cursorBounds.contains(contentX, contentY)) { 3022 int slop = viewToContentDimension(mNavSlop); 3023 cursorBounds.inset(-slop, -slop); 3024 if (cursorBounds.contains(contentX, contentY)) { 3025 contentX = cursorBounds.centerX(); 3026 contentY = cursorBounds.centerY(); 3027 } 3028 } 3029 } 3030 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 3031 contentX, contentY, hrefMsg); 3032 } 3033 3034 /** 3035 * Request the url of the image last touched by the user. msg will be sent 3036 * to its target with a String representing the url as its object. 3037 * 3038 * @param msg This message will be dispatched with the result of the request 3039 * as the data member with "url" as key. The result can be null. 3040 */ 3041 public void requestImageRef(Message msg) { 3042 checkThread(); 3043 if (0 == mNativeClass) return; // client isn't initialized 3044 int contentX = viewToContentX(mLastTouchX + mScrollX); 3045 int contentY = viewToContentY(mLastTouchY + mScrollY); 3046 String ref = nativeImageURI(contentX, contentY); 3047 Bundle data = msg.getData(); 3048 data.putString("url", ref); 3049 msg.setData(data); 3050 msg.sendToTarget(); 3051 } 3052 3053 static int pinLoc(int x, int viewMax, int docMax) { 3054// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 3055 if (docMax < viewMax) { // the doc has room on the sides for "blank" 3056 // pin the short document to the top/left of the screen 3057 x = 0; 3058// Log.d(LOGTAG, "--- center " + x); 3059 } else if (x < 0) { 3060 x = 0; 3061// Log.d(LOGTAG, "--- zero"); 3062 } else if (x + viewMax > docMax) { 3063 x = docMax - viewMax; 3064// Log.d(LOGTAG, "--- pin " + x); 3065 } 3066 return x; 3067 } 3068 3069 // Expects x in view coordinates 3070 int pinLocX(int x) { 3071 if (mInOverScrollMode) return x; 3072 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 3073 } 3074 3075 // Expects y in view coordinates 3076 int pinLocY(int y) { 3077 if (mInOverScrollMode) return y; 3078 return pinLoc(y, getViewHeightWithTitle(), 3079 computeRealVerticalScrollRange() + getTitleHeight()); 3080 } 3081 3082 /** 3083 * A title bar which is embedded in this WebView, and scrolls along with it 3084 * vertically, but not horizontally. 3085 */ 3086 private View mTitleBar; 3087 3088 /** 3089 * the title bar rendering gravity 3090 */ 3091 private int mTitleGravity; 3092 3093 /** 3094 * Add or remove a title bar to be embedded into the WebView, and scroll 3095 * along with it vertically, while remaining in view horizontally. Pass 3096 * null to remove the title bar from the WebView, and return to drawing 3097 * the WebView normally without translating to account for the title bar. 3098 * @hide 3099 */ 3100 public void setEmbeddedTitleBar(View v) { 3101 if (mTitleBar == v) return; 3102 if (mTitleBar != null) { 3103 removeView(mTitleBar); 3104 } 3105 if (null != v) { 3106 addView(v, new AbsoluteLayout.LayoutParams( 3107 ViewGroup.LayoutParams.MATCH_PARENT, 3108 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 3109 } 3110 mTitleBar = v; 3111 } 3112 3113 /** 3114 * Set where to render the embedded title bar 3115 * NO_GRAVITY at the top of the page 3116 * TOP at the top of the screen 3117 * @hide 3118 */ 3119 public void setTitleBarGravity(int gravity) { 3120 mTitleGravity = gravity; 3121 // force refresh 3122 invalidate(); 3123 } 3124 3125 /** 3126 * Given a distance in view space, convert it to content space. Note: this 3127 * does not reflect translation, just scaling, so this should not be called 3128 * with coordinates, but should be called for dimensions like width or 3129 * height. 3130 */ 3131 private int viewToContentDimension(int d) { 3132 return Math.round(d * mZoomManager.getInvScale()); 3133 } 3134 3135 /** 3136 * Given an x coordinate in view space, convert it to content space. Also 3137 * may be used for absolute heights (such as for the WebTextView's 3138 * textSize, which is unaffected by the height of the title bar). 3139 */ 3140 /*package*/ int viewToContentX(int x) { 3141 return viewToContentDimension(x); 3142 } 3143 3144 /** 3145 * Given a y coordinate in view space, convert it to content space. 3146 * Takes into account the height of the title bar if there is one 3147 * embedded into the WebView. 3148 */ 3149 /*package*/ int viewToContentY(int y) { 3150 return viewToContentDimension(y - getTitleHeight()); 3151 } 3152 3153 /** 3154 * Given a x coordinate in view space, convert it to content space. 3155 * Returns the result as a float. 3156 */ 3157 private float viewToContentXf(int x) { 3158 return x * mZoomManager.getInvScale(); 3159 } 3160 3161 /** 3162 * Given a y coordinate in view space, convert it to content space. 3163 * Takes into account the height of the title bar if there is one 3164 * embedded into the WebView. Returns the result as a float. 3165 */ 3166 private float viewToContentYf(int y) { 3167 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 3168 } 3169 3170 /** 3171 * Given a distance in content space, convert it to view space. Note: this 3172 * does not reflect translation, just scaling, so this should not be called 3173 * with coordinates, but should be called for dimensions like width or 3174 * height. 3175 */ 3176 /*package*/ int contentToViewDimension(int d) { 3177 return Math.round(d * mZoomManager.getScale()); 3178 } 3179 3180 /** 3181 * Given an x coordinate in content space, convert it to view 3182 * space. 3183 */ 3184 /*package*/ int contentToViewX(int x) { 3185 return contentToViewDimension(x); 3186 } 3187 3188 /** 3189 * Given a y coordinate in content space, convert it to view 3190 * space. Takes into account the height of the title bar. 3191 */ 3192 /*package*/ int contentToViewY(int y) { 3193 return contentToViewDimension(y) + getTitleHeight(); 3194 } 3195 3196 private Rect contentToViewRect(Rect x) { 3197 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 3198 contentToViewX(x.right), contentToViewY(x.bottom)); 3199 } 3200 3201 /* To invalidate a rectangle in content coordinates, we need to transform 3202 the rect into view coordinates, so we can then call invalidate(...). 3203 3204 Normally, we would just call contentToView[XY](...), which eventually 3205 calls Math.round(coordinate * mActualScale). However, for invalidates, 3206 we need to account for the slop that occurs with antialiasing. To 3207 address that, we are a little more liberal in the size of the rect that 3208 we invalidate. 3209 3210 This liberal calculation calls floor() for the top/left, and ceil() for 3211 the bottom/right coordinates. This catches the possible extra pixels of 3212 antialiasing that we might have missed with just round(). 3213 */ 3214 3215 // Called by JNI to invalidate the View, given rectangle coordinates in 3216 // content space 3217 private void viewInvalidate(int l, int t, int r, int b) { 3218 final float scale = mZoomManager.getScale(); 3219 final int dy = getTitleHeight(); 3220 invalidate((int)Math.floor(l * scale), 3221 (int)Math.floor(t * scale) + dy, 3222 (int)Math.ceil(r * scale), 3223 (int)Math.ceil(b * scale) + dy); 3224 } 3225 3226 // Called by JNI to invalidate the View after a delay, given rectangle 3227 // coordinates in content space 3228 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 3229 final float scale = mZoomManager.getScale(); 3230 final int dy = getTitleHeight(); 3231 postInvalidateDelayed(delay, 3232 (int)Math.floor(l * scale), 3233 (int)Math.floor(t * scale) + dy, 3234 (int)Math.ceil(r * scale), 3235 (int)Math.ceil(b * scale) + dy); 3236 } 3237 3238 private void invalidateContentRect(Rect r) { 3239 viewInvalidate(r.left, r.top, r.right, r.bottom); 3240 } 3241 3242 // stop the scroll animation, and don't let a subsequent fling add 3243 // to the existing velocity 3244 private void abortAnimation() { 3245 mScroller.abortAnimation(); 3246 mLastVelocity = 0; 3247 } 3248 3249 /* call from webcoreview.draw(), so we're still executing in the UI thread 3250 */ 3251 private void recordNewContentSize(int w, int h, boolean updateLayout) { 3252 3253 // premature data from webkit, ignore 3254 if ((w | h) == 0) { 3255 return; 3256 } 3257 3258 // don't abort a scroll animation if we didn't change anything 3259 if (mContentWidth != w || mContentHeight != h) { 3260 // record new dimensions 3261 mContentWidth = w; 3262 mContentHeight = h; 3263 // If history Picture is drawn, don't update scroll. They will be 3264 // updated when we get out of that mode. 3265 if (!mDrawHistory) { 3266 // repin our scroll, taking into account the new content size 3267 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 3268 if (!mScroller.isFinished()) { 3269 // We are in the middle of a scroll. Repin the final scroll 3270 // position. 3271 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 3272 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 3273 } 3274 } 3275 } 3276 contentSizeChanged(updateLayout); 3277 } 3278 3279 // Used to avoid sending many visible rect messages. 3280 private Rect mLastVisibleRectSent = new Rect(); 3281 private Rect mLastGlobalRect = new Rect(); 3282 private Rect mVisibleRect = new Rect(); 3283 private Rect mGlobalVisibleRect = new Rect(); 3284 private Point mScrollOffset = new Point(); 3285 3286 Rect sendOurVisibleRect() { 3287 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 3288 calcOurContentVisibleRect(mVisibleRect); 3289 // Rect.equals() checks for null input. 3290 if (!mVisibleRect.equals(mLastVisibleRectSent)) { 3291 if (!mBlockWebkitViewMessages) { 3292 mScrollOffset.set(mVisibleRect.left, mVisibleRect.top); 3293 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 3294 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 3295 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, mScrollOffset); 3296 } 3297 mLastVisibleRectSent.set(mVisibleRect); 3298 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3299 } 3300 if (getGlobalVisibleRect(mGlobalVisibleRect) 3301 && !mGlobalVisibleRect.equals(mLastGlobalRect)) { 3302 if (DebugFlags.WEB_VIEW) { 3303 Log.v(LOGTAG, "sendOurVisibleRect=(" + mGlobalVisibleRect.left + "," 3304 + mGlobalVisibleRect.top + ",r=" + mGlobalVisibleRect.right + ",b=" 3305 + mGlobalVisibleRect.bottom); 3306 } 3307 // TODO: the global offset is only used by windowRect() 3308 // in ChromeClientAndroid ; other clients such as touch 3309 // and mouse events could return view + screen relative points. 3310 if (!mBlockWebkitViewMessages) { 3311 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, mGlobalVisibleRect); 3312 } 3313 mLastGlobalRect.set(mGlobalVisibleRect); 3314 } 3315 return mVisibleRect; 3316 } 3317 3318 private Point mGlobalVisibleOffset = new Point(); 3319 // Sets r to be the visible rectangle of our webview in view coordinates 3320 private void calcOurVisibleRect(Rect r) { 3321 getGlobalVisibleRect(r, mGlobalVisibleOffset); 3322 r.offset(-mGlobalVisibleOffset.x, -mGlobalVisibleOffset.y); 3323 } 3324 3325 // Sets r to be our visible rectangle in content coordinates 3326 private void calcOurContentVisibleRect(Rect r) { 3327 calcOurVisibleRect(r); 3328 r.left = viewToContentX(r.left); 3329 // viewToContentY will remove the total height of the title bar. Add 3330 // the visible height back in to account for the fact that if the title 3331 // bar is partially visible, the part of the visible rect which is 3332 // displaying our content is displaced by that amount. 3333 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 3334 r.right = viewToContentX(r.right); 3335 r.bottom = viewToContentY(r.bottom); 3336 } 3337 3338 private Rect mContentVisibleRect = new Rect(); 3339 // Sets r to be our visible rectangle in content coordinates. We use this 3340 // method on the native side to compute the position of the fixed layers. 3341 // Uses floating coordinates (necessary to correctly place elements when 3342 // the scale factor is not 1) 3343 private void calcOurContentVisibleRectF(RectF r) { 3344 calcOurVisibleRect(mContentVisibleRect); 3345 r.left = viewToContentXf(mContentVisibleRect.left); 3346 // viewToContentY will remove the total height of the title bar. Add 3347 // the visible height back in to account for the fact that if the title 3348 // bar is partially visible, the part of the visible rect which is 3349 // displaying our content is displaced by that amount. 3350 r.top = viewToContentYf(mContentVisibleRect.top + getVisibleTitleHeightImpl()); 3351 r.right = viewToContentXf(mContentVisibleRect.right); 3352 r.bottom = viewToContentYf(mContentVisibleRect.bottom); 3353 } 3354 3355 static class ViewSizeData { 3356 int mWidth; 3357 int mHeight; 3358 float mHeightWidthRatio; 3359 int mActualViewHeight; 3360 int mTextWrapWidth; 3361 int mAnchorX; 3362 int mAnchorY; 3363 float mScale; 3364 boolean mIgnoreHeight; 3365 } 3366 3367 /** 3368 * Compute unzoomed width and height, and if they differ from the last 3369 * values we sent, send them to webkit (to be used as new viewport) 3370 * 3371 * @param force ensures that the message is sent to webkit even if the width 3372 * or height has not changed since the last message 3373 * 3374 * @return true if new values were sent 3375 */ 3376 boolean sendViewSizeZoom(boolean force) { 3377 if (mBlockWebkitViewMessages) return false; 3378 if (mZoomManager.isPreventingWebkitUpdates()) return false; 3379 3380 int viewWidth = getViewWidth(); 3381 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 3382 // This height could be fixed and be different from actual visible height. 3383 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 3384 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 3385 // Make the ratio more accurate than (newHeight / newWidth), since the 3386 // latter both are calculated and rounded. 3387 float heightWidthRatio = (float) viewHeight / viewWidth; 3388 /* 3389 * Because the native side may have already done a layout before the 3390 * View system was able to measure us, we have to send a height of 0 to 3391 * remove excess whitespace when we grow our width. This will trigger a 3392 * layout and a change in content size. This content size change will 3393 * mean that contentSizeChanged will either call this method directly or 3394 * indirectly from onSizeChanged. 3395 */ 3396 if (newWidth > mLastWidthSent && mWrapContent) { 3397 newHeight = 0; 3398 heightWidthRatio = 0; 3399 } 3400 // Actual visible content height. 3401 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 3402 // Avoid sending another message if the dimensions have not changed. 3403 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 3404 actualViewHeight != mLastActualHeightSent) { 3405 ViewSizeData data = new ViewSizeData(); 3406 data.mWidth = newWidth; 3407 data.mHeight = newHeight; 3408 data.mHeightWidthRatio = heightWidthRatio; 3409 data.mActualViewHeight = actualViewHeight; 3410 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 3411 data.mScale = mZoomManager.getScale(); 3412 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 3413 && !mHeightCanMeasure; 3414 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 3415 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 3416 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 3417 mLastWidthSent = newWidth; 3418 mLastHeightSent = newHeight; 3419 mLastActualHeightSent = actualViewHeight; 3420 mZoomManager.clearDocumentAnchor(); 3421 return true; 3422 } 3423 return false; 3424 } 3425 3426 /** 3427 * Update the double-tap zoom. 3428 */ 3429 /* package */ void updateDoubleTapZoom(int doubleTapZoom) { 3430 mZoomManager.updateDoubleTapZoom(doubleTapZoom); 3431 } 3432 3433 private int computeRealHorizontalScrollRange() { 3434 if (mDrawHistory) { 3435 return mHistoryWidth; 3436 } else { 3437 // to avoid rounding error caused unnecessary scrollbar, use floor 3438 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 3439 } 3440 } 3441 3442 @Override 3443 protected int computeHorizontalScrollRange() { 3444 int range = computeRealHorizontalScrollRange(); 3445 3446 // Adjust reported range if overscrolled to compress the scroll bars 3447 final int scrollX = mScrollX; 3448 final int overscrollRight = computeMaxScrollX(); 3449 if (scrollX < 0) { 3450 range -= scrollX; 3451 } else if (scrollX > overscrollRight) { 3452 range += scrollX - overscrollRight; 3453 } 3454 3455 return range; 3456 } 3457 3458 @Override 3459 protected int computeHorizontalScrollOffset() { 3460 return Math.max(mScrollX, 0); 3461 } 3462 3463 private int computeRealVerticalScrollRange() { 3464 if (mDrawHistory) { 3465 return mHistoryHeight; 3466 } else { 3467 // to avoid rounding error caused unnecessary scrollbar, use floor 3468 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 3469 } 3470 } 3471 3472 @Override 3473 protected int computeVerticalScrollRange() { 3474 int range = computeRealVerticalScrollRange(); 3475 3476 // Adjust reported range if overscrolled to compress the scroll bars 3477 final int scrollY = mScrollY; 3478 final int overscrollBottom = computeMaxScrollY(); 3479 if (scrollY < 0) { 3480 range -= scrollY; 3481 } else if (scrollY > overscrollBottom) { 3482 range += scrollY - overscrollBottom; 3483 } 3484 3485 return range; 3486 } 3487 3488 @Override 3489 protected int computeVerticalScrollOffset() { 3490 return Math.max(mScrollY - getTitleHeight(), 0); 3491 } 3492 3493 @Override 3494 protected int computeVerticalScrollExtent() { 3495 return getViewHeight(); 3496 } 3497 3498 /** @hide */ 3499 @Override 3500 protected void onDrawVerticalScrollBar(Canvas canvas, 3501 Drawable scrollBar, 3502 int l, int t, int r, int b) { 3503 if (mScrollY < 0) { 3504 t -= mScrollY; 3505 } 3506 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3507 scrollBar.draw(canvas); 3508 } 3509 3510 @Override 3511 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3512 boolean clampedY) { 3513 // Special-case layer scrolling so that we do not trigger normal scroll 3514 // updating. 3515 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3516 scrollLayerTo(scrollX, scrollY); 3517 return; 3518 } 3519 mInOverScrollMode = false; 3520 int maxX = computeMaxScrollX(); 3521 int maxY = computeMaxScrollY(); 3522 if (maxX == 0) { 3523 // do not over scroll x if the page just fits the screen 3524 scrollX = pinLocX(scrollX); 3525 } else if (scrollX < 0 || scrollX > maxX) { 3526 mInOverScrollMode = true; 3527 } 3528 if (scrollY < 0 || scrollY > maxY) { 3529 mInOverScrollMode = true; 3530 } 3531 3532 int oldX = mScrollX; 3533 int oldY = mScrollY; 3534 3535 super.scrollTo(scrollX, scrollY); 3536 3537 if (mOverScrollGlow != null) { 3538 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 3539 } 3540 } 3541 3542 /** 3543 * Get the url for the current page. This is not always the same as the url 3544 * passed to WebViewClient.onPageStarted because although the load for 3545 * that url has begun, the current page may not have changed. 3546 * @return The url for the current page. 3547 */ 3548 public String getUrl() { 3549 checkThread(); 3550 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3551 return h != null ? h.getUrl() : null; 3552 } 3553 3554 /** 3555 * Get the original url for the current page. This is not always the same 3556 * as the url passed to WebViewClient.onPageStarted because although the 3557 * load for that url has begun, the current page may not have changed. 3558 * Also, there may have been redirects resulting in a different url to that 3559 * originally requested. 3560 * @return The url that was originally requested for the current page. 3561 */ 3562 public String getOriginalUrl() { 3563 checkThread(); 3564 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3565 return h != null ? h.getOriginalUrl() : null; 3566 } 3567 3568 /** 3569 * Get the title for the current page. This is the title of the current page 3570 * until WebViewClient.onReceivedTitle is called. 3571 * @return The title for the current page. 3572 */ 3573 public String getTitle() { 3574 checkThread(); 3575 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3576 return h != null ? h.getTitle() : null; 3577 } 3578 3579 /** 3580 * Get the favicon for the current page. This is the favicon of the current 3581 * page until WebViewClient.onReceivedIcon is called. 3582 * @return The favicon for the current page. 3583 */ 3584 public Bitmap getFavicon() { 3585 checkThread(); 3586 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3587 return h != null ? h.getFavicon() : null; 3588 } 3589 3590 /** 3591 * Get the touch icon url for the apple-touch-icon <link> element, or 3592 * a URL on this site's server pointing to the standard location of a 3593 * touch icon. 3594 * @hide 3595 */ 3596 public String getTouchIconUrl() { 3597 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3598 return h != null ? h.getTouchIconUrl() : null; 3599 } 3600 3601 /** 3602 * Get the progress for the current page. 3603 * @return The progress for the current page between 0 and 100. 3604 */ 3605 public int getProgress() { 3606 checkThread(); 3607 return mCallbackProxy.getProgress(); 3608 } 3609 3610 /** 3611 * @return the height of the HTML content. 3612 */ 3613 public int getContentHeight() { 3614 checkThread(); 3615 return mContentHeight; 3616 } 3617 3618 /** 3619 * @return the width of the HTML content. 3620 * @hide 3621 */ 3622 public int getContentWidth() { 3623 return mContentWidth; 3624 } 3625 3626 /** 3627 * @hide 3628 */ 3629 public int getPageBackgroundColor() { 3630 return nativeGetBackgroundColor(); 3631 } 3632 3633 /** 3634 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3635 * is a global requests, not restricted to just this webview. This can be 3636 * useful if the application has been paused. 3637 */ 3638 public void pauseTimers() { 3639 checkThread(); 3640 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3641 } 3642 3643 /** 3644 * Resume all layout, parsing, and JavaScript timers for all webviews. 3645 * This will resume dispatching all timers. 3646 */ 3647 public void resumeTimers() { 3648 checkThread(); 3649 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3650 } 3651 3652 /** 3653 * Call this to pause any extra processing associated with this WebView and 3654 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3655 * is taken offscreen, this could be called to reduce unnecessary CPU or 3656 * network traffic. When the WebView is again "active", call onResume(). 3657 * 3658 * Note that this differs from pauseTimers(), which affects all WebViews. 3659 */ 3660 public void onPause() { 3661 checkThread(); 3662 if (!mIsPaused) { 3663 mIsPaused = true; 3664 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3665 // We want to pause the current playing video when switching out 3666 // from the current WebView/tab. 3667 if (mHTML5VideoViewProxy != null) { 3668 mHTML5VideoViewProxy.pauseAndDispatch(); 3669 } 3670 if (mNativeClass != 0) { 3671 nativeSetPauseDrawing(mNativeClass, true); 3672 } 3673 3674 cancelSelectDialog(); 3675 WebCoreThreadWatchdog.pause(); 3676 } 3677 } 3678 3679 @Override 3680 protected void onWindowVisibilityChanged(int visibility) { 3681 super.onWindowVisibilityChanged(visibility); 3682 updateDrawingState(); 3683 } 3684 3685 void updateDrawingState() { 3686 if (mNativeClass == 0 || mIsPaused) return; 3687 if (getWindowVisibility() != VISIBLE) { 3688 nativeSetPauseDrawing(mNativeClass, true); 3689 } else if (getVisibility() != VISIBLE) { 3690 nativeSetPauseDrawing(mNativeClass, true); 3691 } else { 3692 nativeSetPauseDrawing(mNativeClass, false); 3693 } 3694 } 3695 3696 /** 3697 * Call this to resume a WebView after a previous call to onPause(). 3698 */ 3699 public void onResume() { 3700 checkThread(); 3701 if (mIsPaused) { 3702 mIsPaused = false; 3703 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3704 if (mNativeClass != 0) { 3705 nativeSetPauseDrawing(mNativeClass, false); 3706 } 3707 } 3708 // Ensure that the watchdog has a currently valid Context to be able to display 3709 // a prompt dialog. For example, if the Activity was finished whilst the WebCore 3710 // thread was blocked and the Activity is started again, we may reuse the blocked 3711 // thread, but we'll have a new Activity. 3712 WebCoreThreadWatchdog.updateContext(mContext); 3713 // We get a call to onResume for new WebViews (i.e. mIsPaused will be false). We need 3714 // to ensure that the Watchdog thread is running for the new WebView, so call 3715 // it outside the if block above. 3716 WebCoreThreadWatchdog.resume(); 3717 } 3718 3719 /** 3720 * Returns true if the view is paused, meaning onPause() was called. Calling 3721 * onResume() sets the paused state back to false. 3722 * @hide 3723 */ 3724 public boolean isPaused() { 3725 return mIsPaused; 3726 } 3727 3728 /** 3729 * Call this to inform the view that memory is low so that it can 3730 * free any available memory. 3731 */ 3732 public void freeMemory() { 3733 checkThread(); 3734 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3735 } 3736 3737 /** 3738 * Clear the resource cache. Note that the cache is per-application, so 3739 * this will clear the cache for all WebViews used. 3740 * 3741 * @param includeDiskFiles If false, only the RAM cache is cleared. 3742 */ 3743 public void clearCache(boolean includeDiskFiles) { 3744 checkThread(); 3745 // Note: this really needs to be a static method as it clears cache for all 3746 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3747 // we can't make this static. 3748 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3749 includeDiskFiles ? 1 : 0, 0); 3750 } 3751 3752 /** 3753 * Make sure that clearing the form data removes the adapter from the 3754 * currently focused textfield if there is one. 3755 */ 3756 public void clearFormData() { 3757 checkThread(); 3758 if (inEditingMode()) { 3759 mWebTextView.setAdapterCustom(null); 3760 } 3761 } 3762 3763 /** 3764 * Tell the WebView to clear its internal back/forward list. 3765 */ 3766 public void clearHistory() { 3767 checkThread(); 3768 mCallbackProxy.getBackForwardList().setClearPending(); 3769 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3770 } 3771 3772 /** 3773 * Clear the SSL preferences table stored in response to proceeding with SSL 3774 * certificate errors. 3775 */ 3776 public void clearSslPreferences() { 3777 checkThread(); 3778 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3779 } 3780 3781 /** 3782 * Return the WebBackForwardList for this WebView. This contains the 3783 * back/forward list for use in querying each item in the history stack. 3784 * This is a copy of the private WebBackForwardList so it contains only a 3785 * snapshot of the current state. Multiple calls to this method may return 3786 * different objects. The object returned from this method will not be 3787 * updated to reflect any new state. 3788 */ 3789 public WebBackForwardList copyBackForwardList() { 3790 checkThread(); 3791 return mCallbackProxy.getBackForwardList().clone(); 3792 } 3793 3794 /* 3795 * Highlight and scroll to the next occurance of String in findAll. 3796 * Wraps the page infinitely, and scrolls. Must be called after 3797 * calling findAll. 3798 * 3799 * @param forward Direction to search. 3800 */ 3801 public void findNext(boolean forward) { 3802 checkThread(); 3803 if (0 == mNativeClass) return; // client isn't initialized 3804 mWebViewCore.sendMessage(EventHub.FIND_NEXT, forward ? 1 : 0); 3805 } 3806 3807 /* 3808 * Find all instances of find on the page and highlight them. 3809 * @param find String to find. 3810 * @return int The number of occurances of the String "find" 3811 * that were found. 3812 */ 3813 public int findAll(String find) { 3814 return findAllBody(find, false); 3815 } 3816 3817 /** 3818 * @hide 3819 */ 3820 public void findAllAsync(String find) { 3821 findAllBody(find, true); 3822 } 3823 3824 private int findAllBody(String find, boolean isAsync) { 3825 checkThread(); 3826 if (0 == mNativeClass) return 0; // client isn't initialized 3827 mLastFind = find; 3828 mWebViewCore.removeMessages(EventHub.FIND_ALL); 3829 WebViewCore.FindAllRequest request = new 3830 WebViewCore.FindAllRequest(find); 3831 if (isAsync) { 3832 mWebViewCore.sendMessage(EventHub.FIND_ALL, request); 3833 return 0; // no need to wait for response 3834 } 3835 synchronized(request) { 3836 try { 3837 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.FIND_ALL, 3838 request); 3839 while (request.mMatchCount == -1) { 3840 request.wait(); 3841 } 3842 } 3843 catch (InterruptedException e) { 3844 return 0; 3845 } 3846 } 3847 return request.mMatchCount; 3848 } 3849 3850 /** 3851 * Start an ActionMode for finding text in this WebView. Only works if this 3852 * WebView is attached to the view system. 3853 * @param text If non-null, will be the initial text to search for. 3854 * Otherwise, the last String searched for in this WebView will 3855 * be used to start. 3856 * @param showIme If true, show the IME, assuming the user will begin typing. 3857 * If false and text is non-null, perform a find all. 3858 * @return boolean True if the find dialog is shown, false otherwise. 3859 */ 3860 public boolean showFindDialog(String text, boolean showIme) { 3861 checkThread(); 3862 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3863 if (getParent() == null || startActionMode(callback) == null) { 3864 // Could not start the action mode, so end Find on page 3865 return false; 3866 } 3867 mCachedOverlappingActionModeHeight = -1; 3868 mFindCallback = callback; 3869 setFindIsUp(true); 3870 mFindCallback.setWebView(this); 3871 if (showIme) { 3872 mFindCallback.showSoftInput(); 3873 } else if (text != null) { 3874 mFindCallback.setText(text); 3875 mFindCallback.findAll(); 3876 return true; 3877 } 3878 if (text == null) { 3879 text = mLastFind; 3880 } 3881 if (text != null) { 3882 mFindCallback.setText(text); 3883 mFindCallback.findAll(); 3884 } 3885 return true; 3886 } 3887 3888 /** 3889 * Keep track of the find callback so that we can remove its titlebar if 3890 * necessary. 3891 */ 3892 private FindActionModeCallback mFindCallback; 3893 3894 /** 3895 * Toggle whether the find dialog is showing, for both native and Java. 3896 */ 3897 private void setFindIsUp(boolean isUp) { 3898 mFindIsUp = isUp; 3899 if (0 == mNativeClass) return; // client isn't initialized 3900 nativeSetFindIsUp(isUp); 3901 } 3902 3903 // Used to know whether the find dialog is open. Affects whether 3904 // or not we draw the highlights for matches. 3905 private boolean mFindIsUp; 3906 3907 // Keep track of the last string sent, so we can search again when find is 3908 // reopened. 3909 private String mLastFind; 3910 3911 /** 3912 * Return the first substring consisting of the address of a physical 3913 * location. Currently, only addresses in the United States are detected, 3914 * and consist of: 3915 * - a house number 3916 * - a street name 3917 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3918 * - a city name 3919 * - a state or territory, either spelled out or two-letter abbr. 3920 * - an optional 5 digit or 9 digit zip code. 3921 * 3922 * All names must be correctly capitalized, and the zip code, if present, 3923 * must be valid for the state. The street type must be a standard USPS 3924 * spelling or abbreviation. The state or territory must also be spelled 3925 * or abbreviated using USPS standards. The house number may not exceed 3926 * five digits. 3927 * @param addr The string to search for addresses. 3928 * 3929 * @return the address, or if no address is found, return null. 3930 */ 3931 public static String findAddress(String addr) { 3932 checkThread(); 3933 return findAddress(addr, false); 3934 } 3935 3936 /** 3937 * @hide 3938 * Return the first substring consisting of the address of a physical 3939 * location. Currently, only addresses in the United States are detected, 3940 * and consist of: 3941 * - a house number 3942 * - a street name 3943 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3944 * - a city name 3945 * - a state or territory, either spelled out or two-letter abbr. 3946 * - an optional 5 digit or 9 digit zip code. 3947 * 3948 * Names are optionally capitalized, and the zip code, if present, 3949 * must be valid for the state. The street type must be a standard USPS 3950 * spelling or abbreviation. The state or territory must also be spelled 3951 * or abbreviated using USPS standards. The house number may not exceed 3952 * five digits. 3953 * @param addr The string to search for addresses. 3954 * @param caseInsensitive addr Set to true to make search ignore case. 3955 * 3956 * @return the address, or if no address is found, return null. 3957 */ 3958 public static String findAddress(String addr, boolean caseInsensitive) { 3959 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3960 } 3961 3962 /* 3963 * Clear the highlighting surrounding text matches created by findAll. 3964 */ 3965 public void clearMatches() { 3966 checkThread(); 3967 if (mNativeClass == 0) 3968 return; 3969 mWebViewCore.removeMessages(EventHub.FIND_ALL); 3970 mWebViewCore.sendMessage(EventHub.FIND_ALL, null); 3971 } 3972 3973 3974 /** 3975 * Called when the find ActionMode ends. 3976 */ 3977 void notifyFindDialogDismissed() { 3978 mFindCallback = null; 3979 mCachedOverlappingActionModeHeight = -1; 3980 if (mWebViewCore == null) { 3981 return; 3982 } 3983 clearMatches(); 3984 setFindIsUp(false); 3985 // Now that the dialog has been removed, ensure that we scroll to a 3986 // location that is not beyond the end of the page. 3987 pinScrollTo(mScrollX, mScrollY, false, 0); 3988 invalidate(); 3989 } 3990 3991 /** 3992 * Query the document to see if it contains any image references. The 3993 * message object will be dispatched with arg1 being set to 1 if images 3994 * were found and 0 if the document does not reference any images. 3995 * @param response The message that will be dispatched with the result. 3996 */ 3997 public void documentHasImages(Message response) { 3998 checkThread(); 3999 if (response == null) { 4000 return; 4001 } 4002 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 4003 } 4004 4005 /** 4006 * Request the scroller to abort any ongoing animation 4007 * 4008 * @hide 4009 */ 4010 public void stopScroll() { 4011 mScroller.forceFinished(true); 4012 mLastVelocity = 0; 4013 } 4014 4015 @Override 4016 public void computeScroll() { 4017 if (mScroller.computeScrollOffset()) { 4018 int oldX = mScrollX; 4019 int oldY = mScrollY; 4020 int x = mScroller.getCurrX(); 4021 int y = mScroller.getCurrY(); 4022 invalidate(); // So we draw again 4023 4024 if (!mScroller.isFinished()) { 4025 int rangeX = computeMaxScrollX(); 4026 int rangeY = computeMaxScrollY(); 4027 int overflingDistance = mOverflingDistance; 4028 4029 // Use the layer's scroll data if needed. 4030 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 4031 oldX = mScrollingLayerRect.left; 4032 oldY = mScrollingLayerRect.top; 4033 rangeX = mScrollingLayerRect.right; 4034 rangeY = mScrollingLayerRect.bottom; 4035 // No overscrolling for layers. 4036 overflingDistance = 0; 4037 } 4038 4039 overScrollBy(x - oldX, y - oldY, oldX, oldY, 4040 rangeX, rangeY, 4041 overflingDistance, overflingDistance, false); 4042 4043 if (mOverScrollGlow != null) { 4044 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 4045 } 4046 } else { 4047 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 4048 mScrollX = x; 4049 mScrollY = y; 4050 } else { 4051 // Update the layer position instead of WebView. 4052 scrollLayerTo(x, y); 4053 } 4054 abortAnimation(); 4055 nativeSetIsScrolling(false); 4056 if (!mBlockWebkitViewMessages) { 4057 WebViewCore.resumePriority(); 4058 if (!mSelectingText) { 4059 WebViewCore.resumeUpdatePicture(mWebViewCore); 4060 } 4061 } 4062 if (oldX != mScrollX || oldY != mScrollY) { 4063 sendOurVisibleRect(); 4064 } 4065 } 4066 } else { 4067 super.computeScroll(); 4068 } 4069 } 4070 4071 private void scrollLayerTo(int x, int y) { 4072 if (x == mScrollingLayerRect.left && y == mScrollingLayerRect.top) { 4073 return; 4074 } 4075 if (mSelectingText) { 4076 int dx = mScrollingLayerRect.left - x; 4077 int dy = mScrollingLayerRect.top - y; 4078 if (mSelectCursorBaseLayerId == mCurrentScrollingLayerId) { 4079 mSelectCursorBase.offset(dx, dy); 4080 } 4081 if (mSelectCursorExtentLayerId == mCurrentScrollingLayerId) { 4082 mSelectCursorExtent.offset(dx, dy); 4083 } 4084 } 4085 nativeScrollLayer(mCurrentScrollingLayerId, x, y); 4086 mScrollingLayerRect.left = x; 4087 mScrollingLayerRect.top = y; 4088 mWebViewCore.sendMessage(WebViewCore.EventHub.SCROLL_LAYER, mCurrentScrollingLayerId, 4089 mScrollingLayerRect); 4090 onScrollChanged(mScrollX, mScrollY, mScrollX, mScrollY); 4091 invalidate(); 4092 } 4093 4094 private static int computeDuration(int dx, int dy) { 4095 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 4096 int duration = distance * 1000 / STD_SPEED; 4097 return Math.min(duration, MAX_DURATION); 4098 } 4099 4100 // helper to pin the scrollBy parameters (already in view coordinates) 4101 // returns true if the scroll was changed 4102 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 4103 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 4104 } 4105 // helper to pin the scrollTo parameters (already in view coordinates) 4106 // returns true if the scroll was changed 4107 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 4108 x = pinLocX(x); 4109 y = pinLocY(y); 4110 int dx = x - mScrollX; 4111 int dy = y - mScrollY; 4112 4113 if ((dx | dy) == 0) { 4114 return false; 4115 } 4116 abortAnimation(); 4117 if (animate) { 4118 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 4119 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 4120 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 4121 awakenScrollBars(mScroller.getDuration()); 4122 invalidate(); 4123 } else { 4124 scrollTo(x, y); 4125 } 4126 return true; 4127 } 4128 4129 // Scale from content to view coordinates, and pin. 4130 // Also called by jni webview.cpp 4131 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 4132 if (mDrawHistory) { 4133 // disallow WebView to change the scroll position as History Picture 4134 // is used in the view system. 4135 // TODO: as we switchOutDrawHistory when trackball or navigation 4136 // keys are hit, this should be safe. Right? 4137 return false; 4138 } 4139 cx = contentToViewDimension(cx); 4140 cy = contentToViewDimension(cy); 4141 if (mHeightCanMeasure) { 4142 // move our visible rect according to scroll request 4143 if (cy != 0) { 4144 Rect tempRect = new Rect(); 4145 calcOurVisibleRect(tempRect); 4146 tempRect.offset(cx, cy); 4147 requestRectangleOnScreen(tempRect); 4148 } 4149 // FIXME: We scroll horizontally no matter what because currently 4150 // ScrollView and ListView will not scroll horizontally. 4151 // FIXME: Why do we only scroll horizontally if there is no 4152 // vertical scroll? 4153// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 4154 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 4155 } else { 4156 return pinScrollBy(cx, cy, animate, 0); 4157 } 4158 } 4159 4160 /** 4161 * Called by CallbackProxy when the page starts loading. 4162 * @param url The URL of the page which has started loading. 4163 */ 4164 /* package */ void onPageStarted(String url) { 4165 // every time we start a new page, we want to reset the 4166 // WebView certificate: if the new site is secure, we 4167 // will reload it and get a new certificate set; 4168 // if the new site is not secure, the certificate must be 4169 // null, and that will be the case 4170 setCertificate(null); 4171 4172 // reset the flag since we set to true in if need after 4173 // loading is see onPageFinished(Url) 4174 mAccessibilityScriptInjected = false; 4175 } 4176 4177 /** 4178 * Called by CallbackProxy when the page finishes loading. 4179 * @param url The URL of the page which has finished loading. 4180 */ 4181 /* package */ void onPageFinished(String url) { 4182 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 4183 // If the user is now on a different page, or has scrolled the page 4184 // past the point where the title bar is offscreen, ignore the 4185 // scroll request. 4186 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 4187 && mScrollX == 0 && mScrollY == 0) { 4188 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 4189 SLIDE_TITLE_DURATION); 4190 } 4191 mPageThatNeedsToSlideTitleBarOffScreen = null; 4192 } 4193 mZoomManager.onPageFinished(url); 4194 injectAccessibilityForUrl(url); 4195 } 4196 4197 /** 4198 * This method injects accessibility in the loaded document if accessibility 4199 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 4200 * If no URL specific script is found or JavaScript is disabled we fallback to 4201 * the default {@link AccessibilityInjector} implementation. 4202 * </p> 4203 * If the URL has the "axs" paramter set to 1 it has already done the 4204 * script injection so we do nothing. If the parameter is set to 0 4205 * the URL opts out accessibility script injection so we fall back to 4206 * the default {@link AccessibilityInjector}. 4207 * </p> 4208 * Note: If the user has not opted-in the accessibility script injection no scripts 4209 * are injected rather the default {@link AccessibilityInjector} implementation 4210 * is used. 4211 * 4212 * @param url The URL loaded by this {@link WebView}. 4213 */ 4214 private void injectAccessibilityForUrl(String url) { 4215 if (mWebViewCore == null) { 4216 return; 4217 } 4218 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 4219 4220 if (!accessibilityManager.isEnabled()) { 4221 // it is possible that accessibility was turned off between reloads 4222 ensureAccessibilityScriptInjectorInstance(false); 4223 return; 4224 } 4225 4226 if (!getSettings().getJavaScriptEnabled()) { 4227 // no JS so we fallback to the basic buil-in support 4228 ensureAccessibilityScriptInjectorInstance(true); 4229 return; 4230 } 4231 4232 // check the URL "axs" parameter to choose appropriate action 4233 int axsParameterValue = getAxsUrlParameterValue(url); 4234 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 4235 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 4236 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 4237 if (onDeviceScriptInjectionEnabled) { 4238 ensureAccessibilityScriptInjectorInstance(false); 4239 // neither script injected nor script injection opted out => we inject 4240 loadUrl(getScreenReaderInjectingJs()); 4241 // TODO: Set this flag after successfull script injection. Maybe upon injection 4242 // the chooser should update the meta tag and we check it to declare success 4243 mAccessibilityScriptInjected = true; 4244 } else { 4245 // injection disabled so we fallback to the basic built-in support 4246 ensureAccessibilityScriptInjectorInstance(true); 4247 } 4248 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 4249 // injection opted out so we fallback to the basic buil-in support 4250 ensureAccessibilityScriptInjectorInstance(true); 4251 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 4252 ensureAccessibilityScriptInjectorInstance(false); 4253 // the URL provides accessibility but we still need to add our generic script 4254 loadUrl(getScreenReaderInjectingJs()); 4255 } else { 4256 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 4257 } 4258 } 4259 4260 /** 4261 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 4262 * 4263 * @param present True to ensure an insance, false to ensure no instance. 4264 */ 4265 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 4266 if (present) { 4267 if (mAccessibilityInjector == null) { 4268 mAccessibilityInjector = new AccessibilityInjector(this); 4269 } 4270 } else { 4271 mAccessibilityInjector = null; 4272 } 4273 } 4274 4275 /** 4276 * Gets JavaScript that injects a screen-reader. 4277 * 4278 * @return The JavaScript snippet. 4279 */ 4280 private String getScreenReaderInjectingJs() { 4281 String screenReaderUrl = Settings.Secure.getString(mContext.getContentResolver(), 4282 Settings.Secure.ACCESSIBILITY_SCREEN_READER_URL); 4283 return String.format(ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE, screenReaderUrl); 4284 } 4285 4286 /** 4287 * Gets the "axs" URL parameter value. 4288 * 4289 * @param url A url to fetch the paramter from. 4290 * @return The parameter value if such, -1 otherwise. 4291 */ 4292 private int getAxsUrlParameterValue(String url) { 4293 if (mMatchAxsUrlParameterPattern == null) { 4294 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 4295 } 4296 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 4297 if (matcher.find()) { 4298 String keyValuePair = url.substring(matcher.start(), matcher.end()); 4299 return Integer.parseInt(keyValuePair.split("=")[1]); 4300 } 4301 return -1; 4302 } 4303 4304 /** 4305 * The URL of a page that sent a message to scroll the title bar off screen. 4306 * 4307 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 4308 * title bar off the screen. Sometimes, the scroll position is set before 4309 * the page finishes loading. Rather than scrolling while the page is still 4310 * loading, keep track of the URL and new scroll position so we can perform 4311 * the scroll once the page finishes loading. 4312 */ 4313 private String mPageThatNeedsToSlideTitleBarOffScreen; 4314 4315 /** 4316 * The destination Y scroll position to be used when the page finishes 4317 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 4318 */ 4319 private int mYDistanceToSlideTitleOffScreen; 4320 4321 // scale from content to view coordinates, and pin 4322 // return true if pin caused the final x/y different than the request cx/cy, 4323 // and a future scroll may reach the request cx/cy after our size has 4324 // changed 4325 // return false if the view scroll to the exact position as it is requested, 4326 // where negative numbers are taken to mean 0 4327 private boolean setContentScrollTo(int cx, int cy) { 4328 if (mDrawHistory) { 4329 // disallow WebView to change the scroll position as History Picture 4330 // is used in the view system. 4331 // One known case where this is called is that WebCore tries to 4332 // restore the scroll position. As history Picture already uses the 4333 // saved scroll position, it is ok to skip this. 4334 return false; 4335 } 4336 int vx; 4337 int vy; 4338 if ((cx | cy) == 0) { 4339 // If the page is being scrolled to (0,0), do not add in the title 4340 // bar's height, and simply scroll to (0,0). (The only other work 4341 // in contentToView_ is to multiply, so this would not change 0.) 4342 vx = 0; 4343 vy = 0; 4344 } else { 4345 vx = contentToViewX(cx); 4346 vy = contentToViewY(cy); 4347 } 4348// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 4349// vx + " " + vy + "]"); 4350 // Some mobile sites attempt to scroll the title bar off the page by 4351 // scrolling to (0,1). If we are at the top left corner of the 4352 // page, assume this is an attempt to scroll off the title bar, and 4353 // animate the title bar off screen slowly enough that the user can see 4354 // it. 4355 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 4356 && mTitleBar != null) { 4357 // FIXME: 100 should be defined somewhere as our max progress. 4358 if (getProgress() < 100) { 4359 // Wait to scroll the title bar off screen until the page has 4360 // finished loading. Keep track of the URL and the destination 4361 // Y position 4362 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 4363 mYDistanceToSlideTitleOffScreen = vy; 4364 } else { 4365 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 4366 } 4367 // Since we are animating, we have not yet reached the desired 4368 // scroll position. Do not return true to request another attempt 4369 return false; 4370 } 4371 pinScrollTo(vx, vy, false, 0); 4372 // If the request was to scroll to a negative coordinate, treat it as if 4373 // it was a request to scroll to 0 4374 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 4375 return true; 4376 } else { 4377 return false; 4378 } 4379 } 4380 4381 // scale from content to view coordinates, and pin 4382 private void spawnContentScrollTo(int cx, int cy) { 4383 if (mDrawHistory) { 4384 // disallow WebView to change the scroll position as History Picture 4385 // is used in the view system. 4386 return; 4387 } 4388 int vx = contentToViewX(cx); 4389 int vy = contentToViewY(cy); 4390 pinScrollTo(vx, vy, true, 0); 4391 } 4392 4393 /** 4394 * These are from webkit, and are in content coordinate system (unzoomed) 4395 */ 4396 private void contentSizeChanged(boolean updateLayout) { 4397 // suppress 0,0 since we usually see real dimensions soon after 4398 // this avoids drawing the prev content in a funny place. If we find a 4399 // way to consolidate these notifications, this check may become 4400 // obsolete 4401 if ((mContentWidth | mContentHeight) == 0) { 4402 return; 4403 } 4404 4405 if (mHeightCanMeasure) { 4406 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 4407 || updateLayout) { 4408 requestLayout(); 4409 } 4410 } else if (mWidthCanMeasure) { 4411 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 4412 || updateLayout) { 4413 requestLayout(); 4414 } 4415 } else { 4416 // If we don't request a layout, try to send our view size to the 4417 // native side to ensure that WebCore has the correct dimensions. 4418 sendViewSizeZoom(false); 4419 } 4420 } 4421 4422 /** 4423 * Set the WebViewClient that will receive various notifications and 4424 * requests. This will replace the current handler. 4425 * @param client An implementation of WebViewClient. 4426 */ 4427 public void setWebViewClient(WebViewClient client) { 4428 checkThread(); 4429 mCallbackProxy.setWebViewClient(client); 4430 } 4431 4432 /** 4433 * Gets the WebViewClient 4434 * @return the current WebViewClient instance. 4435 * 4436 * @hide This is an implementation detail. 4437 */ 4438 public WebViewClient getWebViewClient() { 4439 return mCallbackProxy.getWebViewClient(); 4440 } 4441 4442 /** 4443 * Register the interface to be used when content can not be handled by 4444 * the rendering engine, and should be downloaded instead. This will replace 4445 * the current handler. 4446 * @param listener An implementation of DownloadListener. 4447 */ 4448 public void setDownloadListener(DownloadListener listener) { 4449 checkThread(); 4450 mCallbackProxy.setDownloadListener(listener); 4451 } 4452 4453 /** 4454 * Set the chrome handler. This is an implementation of WebChromeClient for 4455 * use in handling JavaScript dialogs, favicons, titles, and the progress. 4456 * This will replace the current handler. 4457 * @param client An implementation of WebChromeClient. 4458 */ 4459 public void setWebChromeClient(WebChromeClient client) { 4460 checkThread(); 4461 mCallbackProxy.setWebChromeClient(client); 4462 } 4463 4464 /** 4465 * Gets the chrome handler. 4466 * @return the current WebChromeClient instance. 4467 * 4468 * @hide This is an implementation detail. 4469 */ 4470 public WebChromeClient getWebChromeClient() { 4471 return mCallbackProxy.getWebChromeClient(); 4472 } 4473 4474 /** 4475 * Set the back/forward list client. This is an implementation of 4476 * WebBackForwardListClient for handling new items and changes in the 4477 * history index. 4478 * @param client An implementation of WebBackForwardListClient. 4479 * {@hide} 4480 */ 4481 public void setWebBackForwardListClient(WebBackForwardListClient client) { 4482 mCallbackProxy.setWebBackForwardListClient(client); 4483 } 4484 4485 /** 4486 * Gets the WebBackForwardListClient. 4487 * {@hide} 4488 */ 4489 public WebBackForwardListClient getWebBackForwardListClient() { 4490 return mCallbackProxy.getWebBackForwardListClient(); 4491 } 4492 4493 /** 4494 * Set the Picture listener. This is an interface used to receive 4495 * notifications of a new Picture. 4496 * @param listener An implementation of WebView.PictureListener. 4497 * @deprecated This method is now obsolete. 4498 */ 4499 @Deprecated 4500 public void setPictureListener(PictureListener listener) { 4501 checkThread(); 4502 mPictureListener = listener; 4503 } 4504 4505 /** 4506 * {@hide} 4507 */ 4508 /* FIXME: Debug only! Remove for SDK! */ 4509 public void externalRepresentation(Message callback) { 4510 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 4511 } 4512 4513 /** 4514 * {@hide} 4515 */ 4516 /* FIXME: Debug only! Remove for SDK! */ 4517 public void documentAsText(Message callback) { 4518 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 4519 } 4520 4521 /** 4522 * This method injects the supplied Java object into the WebView. The 4523 * object is injected into the JavaScript context of the main frame, using 4524 * the supplied name. This allows the Java object to be accessed from 4525 * JavaScript. Note that that injected objects will not appear in 4526 * JavaScript until the page is next (re)loaded. For example: 4527 * <pre> webView.addJavascriptInterface(new Object(), "injectedObject"); 4528 * webView.loadData("<!DOCTYPE html><title></title>", "text/html", null); 4529 * webView.loadUrl("javascript:alert(injectedObject.toString())");</pre> 4530 * <p><strong>IMPORTANT:</strong> 4531 * <ul> 4532 * <li> addJavascriptInterface() can be used to allow JavaScript to control 4533 * the host application. This is a powerful feature, but also presents a 4534 * security risk. Use of this method in a WebView containing untrusted 4535 * content could allow an attacker to manipulate the host application in 4536 * unintended ways, executing Java code with the permissions of the host 4537 * application. Use extreme care when using this method in a WebView which 4538 * could contain untrusted content. 4539 * <li> JavaScript interacts with Java object on a private, background 4540 * thread of the WebView. Care is therefore required to maintain thread 4541 * safety.</li> 4542 * </ul></p> 4543 * @param object The Java object to inject into the WebView's JavaScript 4544 * context. Null values are ignored. 4545 * @param name The name used to expose the instance in JavaScript. 4546 */ 4547 public void addJavascriptInterface(Object object, String name) { 4548 checkThread(); 4549 if (object == null) { 4550 return; 4551 } 4552 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4553 arg.mObject = object; 4554 arg.mInterfaceName = name; 4555 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 4556 } 4557 4558 /** 4559 * Removes a previously added JavaScript interface with the given name. 4560 * @param interfaceName The name of the interface to remove. 4561 */ 4562 public void removeJavascriptInterface(String interfaceName) { 4563 checkThread(); 4564 if (mWebViewCore != null) { 4565 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4566 arg.mInterfaceName = interfaceName; 4567 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 4568 } 4569 } 4570 4571 /** 4572 * Return the WebSettings object used to control the settings for this 4573 * WebView. 4574 * @return A WebSettings object that can be used to control this WebView's 4575 * settings. 4576 */ 4577 public WebSettings getSettings() { 4578 checkThread(); 4579 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4580 } 4581 4582 /** 4583 * Return the list of currently loaded plugins. 4584 * @return The list of currently loaded plugins. 4585 * 4586 * @hide 4587 * @deprecated This was used for Gears, which has been deprecated. 4588 */ 4589 @Deprecated 4590 public static synchronized PluginList getPluginList() { 4591 checkThread(); 4592 return new PluginList(); 4593 } 4594 4595 /** 4596 * @hide 4597 * @deprecated This was used for Gears, which has been deprecated. 4598 */ 4599 @Deprecated 4600 public void refreshPlugins(boolean reloadOpenPages) { 4601 checkThread(); 4602 } 4603 4604 //------------------------------------------------------------------------- 4605 // Override View methods 4606 //------------------------------------------------------------------------- 4607 4608 @Override 4609 protected void finalize() throws Throwable { 4610 try { 4611 if (mNativeClass != 0) { 4612 mPrivateHandler.post(new Runnable() { 4613 @Override 4614 public void run() { 4615 destroy(); 4616 } 4617 }); 4618 } 4619 } finally { 4620 super.finalize(); 4621 } 4622 } 4623 4624 @Override 4625 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 4626 if (child == mTitleBar) { 4627 // When drawing the title bar, move it horizontally to always show 4628 // at the top of the WebView. 4629 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 4630 int newTop = 0; 4631 if (mTitleGravity == Gravity.NO_GRAVITY) { 4632 newTop = Math.min(0, mScrollY); 4633 } else if (mTitleGravity == Gravity.TOP) { 4634 newTop = mScrollY; 4635 } 4636 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 4637 mTitleBar.setTop(newTop); 4638 } 4639 return super.drawChild(canvas, child, drawingTime); 4640 } 4641 4642 private void drawContent(Canvas canvas, boolean drawRings) { 4643 drawCoreAndCursorRing(canvas, mBackgroundColor, 4644 mDrawCursorRing && drawRings); 4645 } 4646 4647 /** 4648 * Draw the background when beyond bounds 4649 * @param canvas Canvas to draw into 4650 */ 4651 private void drawOverScrollBackground(Canvas canvas) { 4652 if (mOverScrollBackground == null) { 4653 mOverScrollBackground = new Paint(); 4654 Bitmap bm = BitmapFactory.decodeResource( 4655 mContext.getResources(), 4656 com.android.internal.R.drawable.status_bar_background); 4657 mOverScrollBackground.setShader(new BitmapShader(bm, 4658 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4659 mOverScrollBorder = new Paint(); 4660 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4661 mOverScrollBorder.setStrokeWidth(0); 4662 mOverScrollBorder.setColor(0xffbbbbbb); 4663 } 4664 4665 int top = 0; 4666 int right = computeRealHorizontalScrollRange(); 4667 int bottom = top + computeRealVerticalScrollRange(); 4668 // first draw the background and anchor to the top of the view 4669 canvas.save(); 4670 canvas.translate(mScrollX, mScrollY); 4671 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4672 - mScrollY, Region.Op.DIFFERENCE); 4673 canvas.drawPaint(mOverScrollBackground); 4674 canvas.restore(); 4675 // then draw the border 4676 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4677 // next clip the region for the content 4678 canvas.clipRect(0, top, right, bottom); 4679 } 4680 4681 @Override 4682 protected void onDraw(Canvas canvas) { 4683 if (inFullScreenMode()) { 4684 return; // no need to draw anything if we aren't visible. 4685 } 4686 // if mNativeClass is 0, the WebView is either destroyed or not 4687 // initialized. In either case, just draw the background color and return 4688 if (mNativeClass == 0) { 4689 canvas.drawColor(mBackgroundColor); 4690 return; 4691 } 4692 4693 // if both mContentWidth and mContentHeight are 0, it means there is no 4694 // valid Picture passed to WebView yet. This can happen when WebView 4695 // just starts. Draw the background and return. 4696 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4697 canvas.drawColor(mBackgroundColor); 4698 return; 4699 } 4700 4701 if (canvas.isHardwareAccelerated()) { 4702 mZoomManager.setHardwareAccelerated(); 4703 } else { 4704 mWebViewCore.resumeWebKitDraw(); 4705 } 4706 4707 int saveCount = canvas.save(); 4708 if (mInOverScrollMode && !getSettings() 4709 .getUseWebViewBackgroundForOverscrollBackground()) { 4710 drawOverScrollBackground(canvas); 4711 } 4712 if (mTitleBar != null) { 4713 canvas.translate(0, getTitleHeight()); 4714 } 4715 boolean drawNativeRings = !sDisableNavcache; 4716 drawContent(canvas, drawNativeRings); 4717 canvas.restoreToCount(saveCount); 4718 4719 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4720 invalidate(); 4721 } 4722 mWebViewCore.signalRepaintDone(); 4723 4724 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4725 invalidate(); 4726 } 4727 4728 if (mFocusTransition != null) { 4729 mFocusTransition.draw(canvas); 4730 } else if (shouldDrawHighlightRect()) { 4731 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4732 Rect r = new Rect(); 4733 while (iter.next(r)) { 4734 canvas.drawRect(r, mTouchHightlightPaint); 4735 } 4736 } 4737 if (DEBUG_TOUCH_HIGHLIGHT) { 4738 if (getSettings().getNavDump()) { 4739 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4740 if (mTouchCrossHairColor == null) { 4741 mTouchCrossHairColor = new Paint(); 4742 mTouchCrossHairColor.setColor(Color.RED); 4743 } 4744 canvas.drawLine(mTouchHighlightX - mNavSlop, 4745 mTouchHighlightY - mNavSlop, mTouchHighlightX 4746 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4747 + 1, mTouchCrossHairColor); 4748 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4749 mTouchHighlightY - mNavSlop, mTouchHighlightX 4750 - mNavSlop, 4751 mTouchHighlightY + mNavSlop + 1, 4752 mTouchCrossHairColor); 4753 } 4754 } 4755 } 4756 } 4757 4758 private void removeTouchHighlight() { 4759 mWebViewCore.removeMessages(EventHub.HIT_TEST); 4760 mPrivateHandler.removeMessages(HIT_TEST_RESULT); 4761 setTouchHighlightRects(null); 4762 } 4763 4764 @Override 4765 public void setLayoutParams(ViewGroup.LayoutParams params) { 4766 if (params.height == LayoutParams.WRAP_CONTENT) { 4767 mWrapContent = true; 4768 } 4769 super.setLayoutParams(params); 4770 } 4771 4772 @Override 4773 public boolean performLongClick() { 4774 // performLongClick() is the result of a delayed message. If we switch 4775 // to windows overview, the WebView will be temporarily removed from the 4776 // view system. In that case, do nothing. 4777 if (getParent() == null) return false; 4778 4779 // A multi-finger gesture can look like a long press; make sure we don't take 4780 // long press actions if we're scaling. 4781 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4782 if (detector != null && detector.isInProgress()) { 4783 return false; 4784 } 4785 4786 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4787 // Send the click so that the textfield is in focus 4788 centerKeyPressOnTextField(); 4789 rebuildWebTextView(); 4790 } else { 4791 clearTextEntry(); 4792 } 4793 if (inEditingMode()) { 4794 // Since we just called rebuildWebTextView, the layout is not set 4795 // properly. Update it so it can correctly find the word to select. 4796 mWebTextView.ensureLayout(); 4797 // Provide a touch down event to WebTextView, which will allow it 4798 // to store the location to use in performLongClick. 4799 AbsoluteLayout.LayoutParams params 4800 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4801 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4802 mLastTouchTime, MotionEvent.ACTION_DOWN, 4803 mLastTouchX - params.x + mScrollX, 4804 mLastTouchY - params.y + mScrollY, 0); 4805 mWebTextView.dispatchTouchEvent(fake); 4806 return mWebTextView.performLongClick(); 4807 } 4808 if (mSelectingText) return false; // long click does nothing on selection 4809 /* if long click brings up a context menu, the super function 4810 * returns true and we're done. Otherwise, nothing happened when 4811 * the user clicked. */ 4812 if (super.performLongClick()) { 4813 return true; 4814 } 4815 /* In the case where the application hasn't already handled the long 4816 * click action, look for a word under the click. If one is found, 4817 * animate the text selection into view. 4818 * FIXME: no animation code yet */ 4819 final boolean isSelecting = selectText(); 4820 if (isSelecting) { 4821 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4822 } else if (focusCandidateIsEditableText()) { 4823 mSelectCallback = new SelectActionModeCallback(); 4824 mSelectCallback.setWebView(this); 4825 mSelectCallback.setTextSelected(false); 4826 startActionMode(mSelectCallback); 4827 } 4828 return isSelecting; 4829 } 4830 4831 /** 4832 * Select the word at the last click point. 4833 * 4834 * @hide This is an implementation detail. 4835 */ 4836 public boolean selectText() { 4837 int x = viewToContentX(mLastTouchX + mScrollX); 4838 int y = viewToContentY(mLastTouchY + mScrollY); 4839 return selectText(x, y); 4840 } 4841 4842 /** 4843 * Select the word at the indicated content coordinates. 4844 */ 4845 boolean selectText(int x, int y) { 4846 mWebViewCore.sendMessage(EventHub.SELECT_WORD_AT, x, y); 4847 return true; 4848 } 4849 4850 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4851 4852 @Override 4853 protected void onConfigurationChanged(Configuration newConfig) { 4854 mCachedOverlappingActionModeHeight = -1; 4855 if (mSelectingText && mOrientation != newConfig.orientation) { 4856 selectionDone(); 4857 } 4858 mOrientation = newConfig.orientation; 4859 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 4860 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4861 } 4862 } 4863 4864 /** 4865 * Keep track of the Callback so we can end its ActionMode or remove its 4866 * titlebar. 4867 */ 4868 private SelectActionModeCallback mSelectCallback; 4869 4870 // These values are possible options for didUpdateWebTextViewDimensions. 4871 private static final int FULLY_ON_SCREEN = 0; 4872 private static final int INTERSECTS_SCREEN = 1; 4873 private static final int ANYWHERE = 2; 4874 4875 /** 4876 * Check to see if the focused textfield/textarea is still on screen. If it 4877 * is, update the the dimensions and location of WebTextView. Otherwise, 4878 * remove the WebTextView. Should be called when the zoom level changes. 4879 * @param intersection How to determine whether the textfield/textarea is 4880 * still on screen. 4881 * @return boolean True if the textfield/textarea is still on screen and the 4882 * dimensions/location of WebTextView have been updated. 4883 */ 4884 private boolean didUpdateWebTextViewDimensions(int intersection) { 4885 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4886 Rect vBox = contentToViewRect(contentBounds); 4887 Rect visibleRect = new Rect(); 4888 calcOurVisibleRect(visibleRect); 4889 offsetByLayerScrollPosition(vBox); 4890 // If the textfield is on screen, place the WebTextView in 4891 // its new place, accounting for our new scroll/zoom values, 4892 // and adjust its textsize. 4893 boolean onScreen; 4894 switch (intersection) { 4895 case FULLY_ON_SCREEN: 4896 onScreen = visibleRect.contains(vBox); 4897 break; 4898 case INTERSECTS_SCREEN: 4899 onScreen = Rect.intersects(visibleRect, vBox); 4900 break; 4901 case ANYWHERE: 4902 onScreen = true; 4903 break; 4904 default: 4905 throw new AssertionError( 4906 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4907 } 4908 if (onScreen) { 4909 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4910 vBox.height()); 4911 mWebTextView.updateTextSize(); 4912 updateWebTextViewPadding(); 4913 return true; 4914 } else { 4915 // The textfield is now off screen. The user probably 4916 // was not zooming to see the textfield better. Remove 4917 // the WebTextView. If the user types a key, and the 4918 // textfield is still in focus, we will reconstruct 4919 // the WebTextView and scroll it back on screen. 4920 mWebTextView.remove(); 4921 return false; 4922 } 4923 } 4924 4925 private void offsetByLayerScrollPosition(Rect box) { 4926 if ((mCurrentScrollingLayerId != 0) 4927 && (mCurrentScrollingLayerId == nativeFocusCandidateLayerId())) { 4928 box.offsetTo(box.left - mScrollingLayerRect.left, 4929 box.top - mScrollingLayerRect.top); 4930 } 4931 } 4932 4933 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4934 boolean isPictureAfterFirstLayout) { 4935 if (mNativeClass == 0) 4936 return; 4937 boolean queueFull; 4938 queueFull = nativeSetBaseLayer(mNativeClass, layer, invalRegion, 4939 showVisualIndicator, isPictureAfterFirstLayout); 4940 4941 if (layer == 0 || isPictureAfterFirstLayout) { 4942 mWebViewCore.resumeWebKitDraw(); 4943 } else if (queueFull) { 4944 // temporarily disable webkit draw throttling 4945 // TODO: re-enable 4946 // mWebViewCore.pauseWebKitDraw(); 4947 } 4948 4949 if (mHTML5VideoViewProxy != null) { 4950 mHTML5VideoViewProxy.setBaseLayer(layer); 4951 } 4952 } 4953 4954 int getBaseLayer() { 4955 if (mNativeClass == 0) { 4956 return 0; 4957 } 4958 return nativeGetBaseLayer(); 4959 } 4960 4961 private void onZoomAnimationStart() { 4962 // If it is in password mode, turn it off so it does not draw misplaced. 4963 if (inEditingMode()) { 4964 mWebTextView.setVisibility(INVISIBLE); 4965 } 4966 } 4967 4968 private void onZoomAnimationEnd() { 4969 // adjust the edit text view if needed 4970 if (inEditingMode() 4971 && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) { 4972 // If it is a password field, start drawing the WebTextView once 4973 // again. 4974 mWebTextView.setVisibility(VISIBLE); 4975 } 4976 } 4977 4978 void onFixedLengthZoomAnimationStart() { 4979 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4980 onZoomAnimationStart(); 4981 } 4982 4983 void onFixedLengthZoomAnimationEnd() { 4984 if (!mBlockWebkitViewMessages && !mSelectingText) { 4985 WebViewCore.resumeUpdatePicture(mWebViewCore); 4986 } 4987 onZoomAnimationEnd(); 4988 } 4989 4990 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4991 Paint.DITHER_FLAG | 4992 Paint.SUBPIXEL_TEXT_FLAG; 4993 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4994 Paint.DITHER_FLAG; 4995 4996 private final DrawFilter mZoomFilter = 4997 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4998 // If we need to trade better quality for speed, set mScrollFilter to null 4999 private final DrawFilter mScrollFilter = 5000 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 5001 5002 private void drawCoreAndCursorRing(Canvas canvas, int color, 5003 boolean drawCursorRing) { 5004 if (mDrawHistory) { 5005 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 5006 canvas.drawPicture(mHistoryPicture); 5007 return; 5008 } 5009 if (mNativeClass == 0) return; 5010 5011 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 5012 boolean animateScroll = ((!mScroller.isFinished() 5013 || mVelocityTracker != null) 5014 && (mTouchMode != TOUCH_DRAG_MODE || 5015 mHeldMotionless != MOTIONLESS_TRUE)) 5016 || mDeferTouchMode == TOUCH_DRAG_MODE; 5017 if (mTouchMode == TOUCH_DRAG_MODE) { 5018 if (mHeldMotionless == MOTIONLESS_PENDING) { 5019 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5020 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5021 mHeldMotionless = MOTIONLESS_FALSE; 5022 } 5023 if (mHeldMotionless == MOTIONLESS_FALSE) { 5024 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5025 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 5026 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5027 .obtainMessage(AWAKEN_SCROLL_BARS), 5028 ViewConfiguration.getScrollDefaultDelay()); 5029 mHeldMotionless = MOTIONLESS_PENDING; 5030 } 5031 } 5032 int saveCount = canvas.save(); 5033 if (animateZoom) { 5034 mZoomManager.animateZoom(canvas); 5035 } else if (!canvas.isHardwareAccelerated()) { 5036 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 5037 } 5038 5039 boolean UIAnimationsRunning = false; 5040 // Currently for each draw we compute the animation values; 5041 // We may in the future decide to do that independently. 5042 if (mNativeClass != 0 && !canvas.isHardwareAccelerated() 5043 && nativeEvaluateLayersAnimations(mNativeClass)) { 5044 UIAnimationsRunning = true; 5045 // If we have unfinished (or unstarted) animations, 5046 // we ask for a repaint. We only need to do this in software 5047 // rendering (with hardware rendering we already have a different 5048 // method of requesting a repaint) 5049 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 5050 invalidate(); 5051 } 5052 5053 // decide which adornments to draw 5054 int extras = DRAW_EXTRAS_NONE; 5055 if (!mFindIsUp) { 5056 if (mSelectingText) { 5057 extras = DRAW_EXTRAS_SELECTION; 5058 } else if (drawCursorRing) { 5059 extras = DRAW_EXTRAS_CURSOR_RING; 5060 } 5061 } 5062 if (DebugFlags.WEB_VIEW) { 5063 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 5064 + " mSelectingText=" + mSelectingText 5065 + " nativePageShouldHandleShiftAndArrows()=" 5066 + nativePageShouldHandleShiftAndArrows() 5067 + " animateZoom=" + animateZoom 5068 + " extras=" + extras); 5069 } 5070 5071 calcOurContentVisibleRectF(mVisibleContentRect); 5072 if (canvas.isHardwareAccelerated()) { 5073 Rect glRectViewport = mGLViewportEmpty ? null : mGLRectViewport; 5074 Rect viewRectViewport = mGLViewportEmpty ? null : mViewRectViewport; 5075 5076 int functor = nativeGetDrawGLFunction(mNativeClass, glRectViewport, 5077 viewRectViewport, mVisibleContentRect, getScale(), extras); 5078 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 5079 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 5080 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 5081 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 5082 } 5083 5084 } else { 5085 DrawFilter df = null; 5086 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 5087 df = mZoomFilter; 5088 } else if (animateScroll) { 5089 df = mScrollFilter; 5090 } 5091 canvas.setDrawFilter(df); 5092 // XXX: Revisit splitting content. Right now it causes a 5093 // synchronization problem with layers. 5094 int content = nativeDraw(canvas, mVisibleContentRect, color, 5095 extras, false); 5096 canvas.setDrawFilter(null); 5097 if (!mBlockWebkitViewMessages && content != 0) { 5098 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 5099 } 5100 } 5101 5102 canvas.restoreToCount(saveCount); 5103 if (mSelectingText) { 5104 drawTextSelectionHandles(canvas); 5105 } 5106 5107 if (extras == DRAW_EXTRAS_CURSOR_RING) { 5108 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 5109 mTouchMode = TOUCH_SHORTPRESS_MODE; 5110 } 5111 } 5112 if (mFocusSizeChanged) { 5113 mFocusSizeChanged = false; 5114 // If we are zooming, this will get handled above, when the zoom 5115 // finishes. We also do not need to do this unless the WebTextView 5116 // is showing. With hardware acceleration, the pageSwapCallback() 5117 // updates the WebTextView position in sync with page swapping 5118 if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) { 5119 didUpdateWebTextViewDimensions(ANYWHERE); 5120 } 5121 } 5122 } 5123 5124 private void drawTextSelectionHandles(Canvas canvas) { 5125 int[] handles = new int[4]; 5126 getSelectionHandles(handles); 5127 int start_x = contentToViewDimension(handles[0]); 5128 int start_y = contentToViewDimension(handles[1]); 5129 int end_x = contentToViewDimension(handles[2]); 5130 int end_y = contentToViewDimension(handles[3]); 5131 5132 if (mIsCaretSelection) { 5133 if (mSelectHandleCenter == null) { 5134 mSelectHandleCenter = mContext.getResources().getDrawable( 5135 com.android.internal.R.drawable.text_select_handle_middle); 5136 } 5137 // Caret handle is centered 5138 start_x -= (mSelectHandleCenter.getIntrinsicWidth() / 2); 5139 mSelectHandleCenter.setBounds(start_x, start_y, 5140 start_x + mSelectHandleCenter.getIntrinsicWidth(), 5141 start_y + mSelectHandleCenter.getIntrinsicHeight()); 5142 mSelectHandleCenter.draw(canvas); 5143 } else { 5144 if (mSelectHandleLeft == null) { 5145 mSelectHandleLeft = mContext.getResources().getDrawable( 5146 com.android.internal.R.drawable.text_select_handle_left); 5147 } 5148 // Magic formula copied from TextView 5149 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 5150 mSelectHandleLeft.setBounds(start_x, start_y, 5151 start_x + mSelectHandleLeft.getIntrinsicWidth(), 5152 start_y + mSelectHandleLeft.getIntrinsicHeight()); 5153 if (mSelectHandleRight == null) { 5154 mSelectHandleRight = mContext.getResources().getDrawable( 5155 com.android.internal.R.drawable.text_select_handle_right); 5156 } 5157 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 5158 mSelectHandleRight.setBounds(end_x, end_y, 5159 end_x + mSelectHandleRight.getIntrinsicWidth(), 5160 end_y + mSelectHandleRight.getIntrinsicHeight()); 5161 mSelectHandleLeft.draw(canvas); 5162 mSelectHandleRight.draw(canvas); 5163 } 5164 } 5165 5166 /** 5167 * Takes an int[4] array as an output param with the values being 5168 * startX, startY, endX, endY 5169 */ 5170 private void getSelectionHandles(int[] handles) { 5171 handles[0] = mSelectCursorBase.right; 5172 handles[1] = mSelectCursorBase.bottom - 5173 (mSelectCursorBase.height() / 4); 5174 handles[2] = mSelectCursorExtent.left; 5175 handles[3] = mSelectCursorExtent.bottom 5176 - (mSelectCursorExtent.height() / 4); 5177 if (!nativeIsBaseFirst(mNativeClass)) { 5178 int swap = handles[0]; 5179 handles[0] = handles[2]; 5180 handles[2] = swap; 5181 swap = handles[1]; 5182 handles[1] = handles[3]; 5183 handles[3] = swap; 5184 } 5185 } 5186 5187 // draw history 5188 private boolean mDrawHistory = false; 5189 private Picture mHistoryPicture = null; 5190 private int mHistoryWidth = 0; 5191 private int mHistoryHeight = 0; 5192 5193 // Only check the flag, can be called from WebCore thread 5194 boolean drawHistory() { 5195 return mDrawHistory; 5196 } 5197 5198 int getHistoryPictureWidth() { 5199 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 5200 } 5201 5202 // Should only be called in UI thread 5203 void switchOutDrawHistory() { 5204 if (null == mWebViewCore) return; // CallbackProxy may trigger this 5205 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 5206 mDrawHistory = false; 5207 mHistoryPicture = null; 5208 invalidate(); 5209 int oldScrollX = mScrollX; 5210 int oldScrollY = mScrollY; 5211 mScrollX = pinLocX(mScrollX); 5212 mScrollY = pinLocY(mScrollY); 5213 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 5214 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 5215 } else { 5216 sendOurVisibleRect(); 5217 } 5218 } 5219 } 5220 5221 WebViewCore.CursorData cursorData() { 5222 WebViewCore.CursorData result = cursorDataNoPosition(); 5223 Point position = nativeCursorPosition(); 5224 result.mX = position.x; 5225 result.mY = position.y; 5226 return result; 5227 } 5228 5229 WebViewCore.CursorData cursorDataNoPosition() { 5230 WebViewCore.CursorData result = new WebViewCore.CursorData(); 5231 result.mMoveGeneration = nativeMoveGeneration(); 5232 result.mFrame = nativeCursorFramePointer(); 5233 return result; 5234 } 5235 5236 /** 5237 * Delete text from start to end in the focused textfield. If there is no 5238 * focus, or if start == end, silently fail. If start and end are out of 5239 * order, swap them. 5240 * @param start Beginning of selection to delete. 5241 * @param end End of selection to delete. 5242 */ 5243 /* package */ void deleteSelection(int start, int end) { 5244 mTextGeneration++; 5245 WebViewCore.TextSelectionData data 5246 = new WebViewCore.TextSelectionData(start, end, 0); 5247 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 5248 data); 5249 } 5250 5251 /** 5252 * Set the selection to (start, end) in the focused textfield. If start and 5253 * end are out of order, swap them. 5254 * @param start Beginning of selection. 5255 * @param end End of selection. 5256 */ 5257 /* package */ void setSelection(int start, int end) { 5258 if (mWebViewCore != null) { 5259 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 5260 } 5261 } 5262 5263 @Override 5264 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 5265 if (mInputConnection == null) { 5266 mInputConnection = new WebViewInputConnection(); 5267 } 5268 mInputConnection.setupEditorInfo(outAttrs); 5269 return mInputConnection; 5270 } 5271 5272 /** 5273 * Called in response to a message from webkit telling us that the soft 5274 * keyboard should be launched. 5275 */ 5276 private void displaySoftKeyboard(boolean isTextView) { 5277 InputMethodManager imm = (InputMethodManager) 5278 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 5279 5280 // bring it back to the default level scale so that user can enter text 5281 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 5282 if (zoom) { 5283 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 5284 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 5285 } 5286 if (isTextView) { 5287 rebuildWebTextView(); 5288 if (inEditingMode()) { 5289 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 5290 if (zoom) { 5291 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 5292 } 5293 return; 5294 } 5295 } 5296 // Used by plugins and contentEditable. 5297 // Also used if the navigation cache is out of date, and 5298 // does not recognize that a textfield is in focus. In that 5299 // case, use WebView as the targeted view. 5300 // see http://b/issue?id=2457459 5301 imm.showSoftInput(this, 0); 5302 } 5303 5304 // Called by WebKit to instruct the UI to hide the keyboard 5305 private void hideSoftKeyboard() { 5306 InputMethodManager imm = InputMethodManager.peekInstance(); 5307 if (imm != null && (imm.isActive(this) 5308 || (inEditingMode() && imm.isActive(mWebTextView)))) { 5309 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 5310 } 5311 } 5312 5313 /* 5314 * This method checks the current focus and cursor and potentially rebuilds 5315 * mWebTextView to have the appropriate properties, such as password, 5316 * multiline, and what text it contains. It also removes it if necessary. 5317 */ 5318 /* package */ void rebuildWebTextView() { 5319 if (!sEnableWebTextView) { 5320 return; // always use WebKit's text entry 5321 } 5322 // If the WebView does not have focus, do nothing until it gains focus. 5323 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 5324 return; 5325 } 5326 boolean alreadyThere = inEditingMode(); 5327 // inEditingMode can only return true if mWebTextView is non-null, 5328 // so we can safely call remove() if (alreadyThere) 5329 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 5330 if (alreadyThere) { 5331 mWebTextView.remove(); 5332 } 5333 return; 5334 } 5335 // At this point, we know we have found an input field, so go ahead 5336 // and create the WebTextView if necessary. 5337 if (mWebTextView == null) { 5338 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 5339 // Initialize our generation number. 5340 mTextGeneration = 0; 5341 } 5342 mWebTextView.updateTextSize(); 5343 updateWebTextViewPosition(); 5344 String text = nativeFocusCandidateText(); 5345 int nodePointer = nativeFocusCandidatePointer(); 5346 // This needs to be called before setType, which may call 5347 // requestFormData, and it needs to have the correct nodePointer. 5348 mWebTextView.setNodePointer(nodePointer); 5349 mWebTextView.setType(nativeFocusCandidateType()); 5350 // Gravity needs to be set after setType 5351 mWebTextView.setGravityForRtl(nativeFocusCandidateIsRtlText()); 5352 if (null == text) { 5353 if (DebugFlags.WEB_VIEW) { 5354 Log.v(LOGTAG, "rebuildWebTextView null == text"); 5355 } 5356 text = ""; 5357 } 5358 mWebTextView.setTextAndKeepSelection(text); 5359 InputMethodManager imm = InputMethodManager.peekInstance(); 5360 if (imm != null && imm.isActive(mWebTextView)) { 5361 imm.restartInput(mWebTextView); 5362 mWebTextView.clearComposingText(); 5363 } 5364 if (isFocused()) { 5365 mWebTextView.requestFocus(); 5366 } 5367 } 5368 5369 private void updateWebTextViewPosition() { 5370 Rect visibleRect = new Rect(); 5371 calcOurContentVisibleRect(visibleRect); 5372 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 5373 // should be in content coordinates. 5374 Rect bounds = nativeFocusCandidateNodeBounds(); 5375 Rect vBox = contentToViewRect(bounds); 5376 offsetByLayerScrollPosition(vBox); 5377 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 5378 if (!Rect.intersects(bounds, visibleRect)) { 5379 revealSelection(); 5380 } 5381 updateWebTextViewPadding(); 5382 } 5383 5384 /** 5385 * Update the padding of mWebTextView based on the native textfield/textarea 5386 */ 5387 void updateWebTextViewPadding() { 5388 Rect paddingRect = nativeFocusCandidatePaddingRect(); 5389 if (paddingRect != null) { 5390 // Use contentToViewDimension since these are the dimensions of 5391 // the padding. 5392 mWebTextView.setPadding( 5393 contentToViewDimension(paddingRect.left), 5394 contentToViewDimension(paddingRect.top), 5395 contentToViewDimension(paddingRect.right), 5396 contentToViewDimension(paddingRect.bottom)); 5397 } 5398 } 5399 5400 /** 5401 * Tell webkit to put the cursor on screen. 5402 */ 5403 /* package */ void revealSelection() { 5404 if (mWebViewCore != null) { 5405 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 5406 } 5407 } 5408 5409 /** 5410 * Called by WebTextView to find saved form data associated with the 5411 * textfield 5412 * @param name Name of the textfield. 5413 * @param nodePointer Pointer to the node of the textfield, so it can be 5414 * compared to the currently focused textfield when the data is 5415 * retrieved. 5416 * @param autoFillable true if WebKit has determined this field is part of 5417 * a form that can be auto filled. 5418 * @param autoComplete true if the attribute "autocomplete" is set to true 5419 * on the textfield. 5420 */ 5421 /* package */ void requestFormData(String name, int nodePointer, 5422 boolean autoFillable, boolean autoComplete) { 5423 if (mWebViewCore.getSettings().getSaveFormData()) { 5424 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 5425 update.arg1 = nodePointer; 5426 RequestFormData updater = new RequestFormData(name, getUrl(), 5427 update, autoFillable, autoComplete); 5428 Thread t = new Thread(updater); 5429 t.start(); 5430 } 5431 } 5432 5433 /** 5434 * Pass a message to find out the <label> associated with the <input> 5435 * identified by nodePointer 5436 * @param framePointer Pointer to the frame containing the <input> node 5437 * @param nodePointer Pointer to the node for which a <label> is desired. 5438 */ 5439 /* package */ void requestLabel(int framePointer, int nodePointer) { 5440 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 5441 nodePointer); 5442 } 5443 5444 /* 5445 * This class requests an Adapter for the WebTextView which shows past 5446 * entries stored in the database. It is a Runnable so that it can be done 5447 * in its own thread, without slowing down the UI. 5448 */ 5449 private class RequestFormData implements Runnable { 5450 private String mName; 5451 private String mUrl; 5452 private Message mUpdateMessage; 5453 private boolean mAutoFillable; 5454 private boolean mAutoComplete; 5455 private WebSettings mWebSettings; 5456 5457 public RequestFormData(String name, String url, Message msg, 5458 boolean autoFillable, boolean autoComplete) { 5459 mName = name; 5460 mUrl = WebTextView.urlForAutoCompleteData(url); 5461 mUpdateMessage = msg; 5462 mAutoFillable = autoFillable; 5463 mAutoComplete = autoComplete; 5464 mWebSettings = getSettings(); 5465 } 5466 5467 @Override 5468 public void run() { 5469 ArrayList<String> pastEntries = new ArrayList<String>(); 5470 5471 if (mAutoFillable) { 5472 // Note that code inside the adapter click handler in WebTextView depends 5473 // on the AutoFill item being at the top of the drop down list. If you change 5474 // the order, make sure to do it there too! 5475 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 5476 pastEntries.add(getResources().getText( 5477 com.android.internal.R.string.autofill_this_form).toString() + 5478 " " + 5479 mAutoFillData.getPreviewString()); 5480 mWebTextView.setAutoFillProfileIsSet(true); 5481 } else { 5482 // There is no autofill profile set up yet, so add an option that 5483 // will invite the user to set their profile up. 5484 pastEntries.add(getResources().getText( 5485 com.android.internal.R.string.setup_autofill).toString()); 5486 mWebTextView.setAutoFillProfileIsSet(false); 5487 } 5488 } 5489 5490 if (mAutoComplete) { 5491 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 5492 } 5493 5494 if (pastEntries.size() > 0) { 5495 AutoCompleteAdapter adapter = new 5496 AutoCompleteAdapter(mContext, pastEntries); 5497 mUpdateMessage.obj = adapter; 5498 mUpdateMessage.sendToTarget(); 5499 } 5500 } 5501 } 5502 5503 /** 5504 * Dump the display tree to "/sdcard/displayTree.txt" 5505 * 5506 * @hide debug only 5507 */ 5508 public void dumpDisplayTree() { 5509 nativeDumpDisplayTree(getUrl()); 5510 } 5511 5512 /** 5513 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 5514 * "/sdcard/domTree.txt" 5515 * 5516 * @hide debug only 5517 */ 5518 public void dumpDomTree(boolean toFile) { 5519 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 5520 } 5521 5522 /** 5523 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 5524 * to "/sdcard/renderTree.txt" 5525 * 5526 * @hide debug only 5527 */ 5528 public void dumpRenderTree(boolean toFile) { 5529 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 5530 } 5531 5532 /** 5533 * Called by DRT on UI thread, need to proxy to WebCore thread. 5534 * 5535 * @hide debug only 5536 */ 5537 public void useMockDeviceOrientation() { 5538 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 5539 } 5540 5541 /** 5542 * Called by DRT on WebCore thread. 5543 * 5544 * @hide debug only 5545 */ 5546 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 5547 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 5548 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 5549 canProvideGamma, gamma); 5550 } 5551 5552 // This is used to determine long press with the center key. Does not 5553 // affect long press with the trackball/touch. 5554 private boolean mGotCenterDown = false; 5555 5556 @Override 5557 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 5558 if (mBlockWebkitViewMessages) { 5559 return false; 5560 } 5561 // send complex characters to webkit for use by JS and plugins 5562 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 5563 // pass the key to DOM 5564 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5565 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5566 // return true as DOM handles the key 5567 return true; 5568 } 5569 return false; 5570 } 5571 5572 private boolean isEnterActionKey(int keyCode) { 5573 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 5574 || keyCode == KeyEvent.KEYCODE_ENTER 5575 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 5576 } 5577 5578 @Override 5579 public boolean onKeyDown(int keyCode, KeyEvent event) { 5580 if (DebugFlags.WEB_VIEW) { 5581 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 5582 + "keyCode=" + keyCode 5583 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5584 } 5585 if (mIsCaretSelection) { 5586 selectionDone(); 5587 } 5588 if (mBlockWebkitViewMessages) { 5589 return false; 5590 } 5591 5592 // don't implement accelerator keys here; defer to host application 5593 if (event.isCtrlPressed()) { 5594 return false; 5595 } 5596 5597 if (mNativeClass == 0) { 5598 return false; 5599 } 5600 5601 // do this hack up front, so it always works, regardless of touch-mode 5602 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 5603 mAutoRedraw = !mAutoRedraw; 5604 if (mAutoRedraw) { 5605 invalidate(); 5606 } 5607 return true; 5608 } 5609 5610 // Bubble up the key event if 5611 // 1. it is a system key; or 5612 // 2. the host application wants to handle it; 5613 if (event.isSystem() 5614 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5615 return false; 5616 } 5617 5618 // accessibility support 5619 if (accessibilityScriptInjected()) { 5620 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5621 // if an accessibility script is injected we delegate to it the key handling. 5622 // this script is a screen reader which is a fully fledged solution for blind 5623 // users to navigate in and interact with web pages. 5624 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5625 return true; 5626 } else { 5627 // Clean up if accessibility was disabled after loading the current URL. 5628 mAccessibilityScriptInjected = false; 5629 } 5630 } else if (mAccessibilityInjector != null) { 5631 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5632 if (mAccessibilityInjector.onKeyEvent(event)) { 5633 // if an accessibility injector is present (no JavaScript enabled or the site 5634 // opts out injecting our JavaScript screen reader) we let it decide whether 5635 // to act on and consume the event. 5636 return true; 5637 } 5638 } else { 5639 // Clean up if accessibility was disabled after loading the current URL. 5640 mAccessibilityInjector = null; 5641 } 5642 } 5643 5644 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 5645 if (event.hasNoModifiers()) { 5646 pageUp(false); 5647 return true; 5648 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5649 pageUp(true); 5650 return true; 5651 } 5652 } 5653 5654 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 5655 if (event.hasNoModifiers()) { 5656 pageDown(false); 5657 return true; 5658 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5659 pageDown(true); 5660 return true; 5661 } 5662 } 5663 5664 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 5665 pageUp(true); 5666 return true; 5667 } 5668 5669 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 5670 pageDown(true); 5671 return true; 5672 } 5673 5674 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5675 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5676 switchOutDrawHistory(); 5677 if (nativePageShouldHandleShiftAndArrows()) { 5678 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 5679 return true; 5680 } 5681 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5682 switch (keyCode) { 5683 case KeyEvent.KEYCODE_DPAD_UP: 5684 pageUp(true); 5685 return true; 5686 case KeyEvent.KEYCODE_DPAD_DOWN: 5687 pageDown(true); 5688 return true; 5689 case KeyEvent.KEYCODE_DPAD_LEFT: 5690 nativeClearCursor(); // start next trackball movement from page edge 5691 return pinScrollTo(0, mScrollY, true, 0); 5692 case KeyEvent.KEYCODE_DPAD_RIGHT: 5693 nativeClearCursor(); // start next trackball movement from page edge 5694 return pinScrollTo(mContentWidth, mScrollY, true, 0); 5695 } 5696 } 5697 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 5698 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 5699 return true; 5700 } 5701 // Bubble up the key event as WebView doesn't handle it 5702 return false; 5703 } 5704 5705 if (isEnterActionKey(keyCode)) { 5706 switchOutDrawHistory(); 5707 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 5708 || nativeCursorWantsKeyEvents(); 5709 if (event.getRepeatCount() == 0) { 5710 if (mSelectingText) { 5711 return true; // discard press if copy in progress 5712 } 5713 mGotCenterDown = true; 5714 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5715 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 5716 if (!wantsKeyEvents) return true; 5717 } 5718 // Bubble up the key event as WebView doesn't handle it 5719 if (!wantsKeyEvents) return false; 5720 } 5721 5722 if (getSettings().getNavDump()) { 5723 switch (keyCode) { 5724 case KeyEvent.KEYCODE_4: 5725 dumpDisplayTree(); 5726 break; 5727 case KeyEvent.KEYCODE_5: 5728 case KeyEvent.KEYCODE_6: 5729 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5730 break; 5731 case KeyEvent.KEYCODE_7: 5732 case KeyEvent.KEYCODE_8: 5733 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5734 break; 5735 } 5736 } 5737 5738 if (nativeCursorIsTextInput()) { 5739 // This message will put the node in focus, for the DOM's notion 5740 // of focus. 5741 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5742 nativeCursorNodePointer()); 5743 // This will bring up the WebTextView and put it in focus, for 5744 // our view system's notion of focus 5745 rebuildWebTextView(); 5746 // Now we need to pass the event to it 5747 if (inEditingMode()) { 5748 mWebTextView.setDefaultSelection(); 5749 return mWebTextView.dispatchKeyEvent(event); 5750 } 5751 } else if (nativeHasFocusNode()) { 5752 // In this case, the cursor is not on a text input, but the focus 5753 // might be. Check it, and if so, hand over to the WebTextView. 5754 rebuildWebTextView(); 5755 if (inEditingMode()) { 5756 mWebTextView.setDefaultSelection(); 5757 return mWebTextView.dispatchKeyEvent(event); 5758 } 5759 } 5760 5761 // TODO: should we pass all the keys to DOM or check the meta tag 5762 if (nativeCursorWantsKeyEvents() || true) { 5763 // pass the key to DOM 5764 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5765 // return true as DOM handles the key 5766 return true; 5767 } 5768 5769 // Bubble up the key event as WebView doesn't handle it 5770 return false; 5771 } 5772 5773 @Override 5774 public boolean onKeyUp(int keyCode, KeyEvent event) { 5775 if (DebugFlags.WEB_VIEW) { 5776 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5777 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5778 } 5779 if (mBlockWebkitViewMessages) { 5780 return false; 5781 } 5782 5783 if (mNativeClass == 0) { 5784 return false; 5785 } 5786 5787 // special CALL handling when cursor node's href is "tel:XXX" 5788 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5789 String text = nativeCursorText(); 5790 if (!nativeCursorIsTextInput() && text != null 5791 && text.startsWith(SCHEME_TEL)) { 5792 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5793 getContext().startActivity(intent); 5794 return true; 5795 } 5796 } 5797 5798 // Bubble up the key event if 5799 // 1. it is a system key; or 5800 // 2. the host application wants to handle it; 5801 if (event.isSystem() 5802 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5803 return false; 5804 } 5805 5806 // accessibility support 5807 if (accessibilityScriptInjected()) { 5808 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5809 // if an accessibility script is injected we delegate to it the key handling. 5810 // this script is a screen reader which is a fully fledged solution for blind 5811 // users to navigate in and interact with web pages. 5812 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5813 return true; 5814 } else { 5815 // Clean up if accessibility was disabled after loading the current URL. 5816 mAccessibilityScriptInjected = false; 5817 } 5818 } else if (mAccessibilityInjector != null) { 5819 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5820 if (mAccessibilityInjector.onKeyEvent(event)) { 5821 // if an accessibility injector is present (no JavaScript enabled or the site 5822 // opts out injecting our JavaScript screen reader) we let it decide whether to 5823 // act on and consume the event. 5824 return true; 5825 } 5826 } else { 5827 // Clean up if accessibility was disabled after loading the current URL. 5828 mAccessibilityInjector = null; 5829 } 5830 } 5831 5832 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5833 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5834 if (nativePageShouldHandleShiftAndArrows()) { 5835 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5836 return true; 5837 } 5838 // always handle the navigation keys in the UI thread 5839 // Bubble up the key event as WebView doesn't handle it 5840 return false; 5841 } 5842 5843 if (isEnterActionKey(keyCode)) { 5844 // remove the long press message first 5845 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5846 mGotCenterDown = false; 5847 5848 if (mSelectingText) { 5849 copySelection(); 5850 selectionDone(); 5851 return true; // discard press if copy in progress 5852 } 5853 5854 if (!sDisableNavcache) { 5855 // perform the single click 5856 Rect visibleRect = sendOurVisibleRect(); 5857 // Note that sendOurVisibleRect calls viewToContent, so the 5858 // coordinates should be in content coordinates. 5859 if (!nativeCursorIntersects(visibleRect)) { 5860 return false; 5861 } 5862 WebViewCore.CursorData data = cursorData(); 5863 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5864 playSoundEffect(SoundEffectConstants.CLICK); 5865 if (nativeCursorIsTextInput()) { 5866 rebuildWebTextView(); 5867 centerKeyPressOnTextField(); 5868 if (inEditingMode()) { 5869 mWebTextView.setDefaultSelection(); 5870 } 5871 return true; 5872 } 5873 clearTextEntry(); 5874 nativeShowCursorTimed(); 5875 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5876 return true; 5877 } 5878 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5879 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5880 nativeCursorNodePointer()); 5881 return true; 5882 } 5883 } 5884 } 5885 5886 // TODO: should we pass all the keys to DOM or check the meta tag 5887 if (nativeCursorWantsKeyEvents() || true) { 5888 // pass the key to DOM 5889 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5890 // return true as DOM handles the key 5891 return true; 5892 } 5893 5894 // Bubble up the key event as WebView doesn't handle it 5895 return false; 5896 } 5897 5898 private boolean startSelectActionMode() { 5899 mSelectCallback = new SelectActionModeCallback(); 5900 mSelectCallback.setTextSelected(!mIsCaretSelection); 5901 mSelectCallback.setWebView(this); 5902 if (startActionMode(mSelectCallback) == null) { 5903 // There is no ActionMode, so do not allow the user to modify a 5904 // selection. 5905 selectionDone(); 5906 return false; 5907 } 5908 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 5909 return true; 5910 } 5911 5912 private void syncSelectionCursors() { 5913 mSelectCursorBaseLayerId = 5914 nativeGetHandleLayerId(mNativeClass, HANDLE_ID_BASE, mSelectCursorBase); 5915 mSelectCursorExtentLayerId = 5916 nativeGetHandleLayerId(mNativeClass, HANDLE_ID_EXTENT, mSelectCursorExtent); 5917 } 5918 5919 private boolean setupWebkitSelect() { 5920 syncSelectionCursors(); 5921 ClipboardManager cm = (ClipboardManager)(mContext 5922 .getSystemService(Context.CLIPBOARD_SERVICE)); 5923 if (!mIsCaretSelection || cm.hasPrimaryClip()) { 5924 if (!startSelectActionMode()) { 5925 selectionDone(); 5926 return false; 5927 } 5928 } 5929 mSelectingText = true; 5930 mTouchMode = TOUCH_DRAG_MODE; 5931 return true; 5932 } 5933 5934 private void updateWebkitSelection() { 5935 int[] handles = null; 5936 if (mIsCaretSelection) { 5937 mSelectCursorExtent.set(mSelectCursorBase); 5938 } 5939 if (mSelectingText) { 5940 handles = new int[4]; 5941 handles[0] = mSelectCursorBase.centerX(); 5942 handles[1] = mSelectCursorBase.centerY(); 5943 handles[2] = mSelectCursorExtent.centerX(); 5944 handles[3] = mSelectCursorExtent.centerY(); 5945 } else { 5946 nativeSetTextSelection(mNativeClass, 0); 5947 } 5948 mWebViewCore.removeMessages(EventHub.SELECT_TEXT); 5949 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.SELECT_TEXT, handles); 5950 } 5951 5952 private void resetCaretTimer() { 5953 mPrivateHandler.removeMessages(CLEAR_CARET_HANDLE); 5954 if (!mSelectionStarted) { 5955 mPrivateHandler.sendEmptyMessageDelayed(CLEAR_CARET_HANDLE, 5956 CARET_HANDLE_STAMINA_MS); 5957 } 5958 } 5959 5960 /** 5961 * Use this method to put the WebView into text selection mode. 5962 * Do not rely on this functionality; it will be deprecated in the future. 5963 * @deprecated This method is now obsolete. 5964 */ 5965 @Deprecated 5966 public void emulateShiftHeld() { 5967 checkThread(); 5968 } 5969 5970 /** 5971 * Select all of the text in this WebView. 5972 * 5973 * @hide This is an implementation detail. 5974 */ 5975 public void selectAll() { 5976 mWebViewCore.sendMessage(EventHub.SELECT_ALL); 5977 } 5978 5979 /** 5980 * Called when the selection has been removed. 5981 */ 5982 void selectionDone() { 5983 if (mSelectingText) { 5984 mSelectingText = false; 5985 // finish is idempotent, so this is fine even if selectionDone was 5986 // called by mSelectCallback.onDestroyActionMode 5987 if (mSelectCallback != null) { 5988 mSelectCallback.finish(); 5989 mSelectCallback = null; 5990 } 5991 if (!mIsCaretSelection) { 5992 updateWebkitSelection(); 5993 } 5994 mIsCaretSelection = false; 5995 invalidate(); // redraw without selection 5996 mAutoScrollX = 0; 5997 mAutoScrollY = 0; 5998 mSentAutoScrollMessage = false; 5999 } 6000 } 6001 6002 /** 6003 * Copy the selection to the clipboard 6004 * 6005 * @hide This is an implementation detail. 6006 */ 6007 public boolean copySelection() { 6008 boolean copiedSomething = false; 6009 String selection = getSelection(); 6010 if (selection != null && selection != "") { 6011 if (DebugFlags.WEB_VIEW) { 6012 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 6013 } 6014 Toast.makeText(mContext 6015 , com.android.internal.R.string.text_copied 6016 , Toast.LENGTH_SHORT).show(); 6017 copiedSomething = true; 6018 ClipboardManager cm = (ClipboardManager)getContext() 6019 .getSystemService(Context.CLIPBOARD_SERVICE); 6020 cm.setText(selection); 6021 int[] handles = new int[4]; 6022 getSelectionHandles(handles); 6023 mWebViewCore.sendMessage(EventHub.COPY_TEXT, handles); 6024 } 6025 invalidate(); // remove selection region and pointer 6026 return copiedSomething; 6027 } 6028 6029 /** 6030 * Cut the selected text into the clipboard 6031 * 6032 * @hide This is an implementation detail 6033 */ 6034 public void cutSelection() { 6035 copySelection(); 6036 int[] handles = new int[4]; 6037 getSelectionHandles(handles); 6038 mWebViewCore.sendMessage(EventHub.DELETE_TEXT, handles); 6039 } 6040 6041 /** 6042 * Paste text from the clipboard to the cursor position. 6043 * 6044 * @hide This is an implementation detail 6045 */ 6046 public void pasteFromClipboard() { 6047 ClipboardManager cm = (ClipboardManager)getContext() 6048 .getSystemService(Context.CLIPBOARD_SERVICE); 6049 ClipData clipData = cm.getPrimaryClip(); 6050 if (clipData != null) { 6051 ClipData.Item clipItem = clipData.getItemAt(0); 6052 CharSequence pasteText = clipItem.getText(); 6053 if (pasteText != null) { 6054 int[] handles = new int[4]; 6055 getSelectionHandles(handles); 6056 mWebViewCore.sendMessage(EventHub.DELETE_TEXT, handles); 6057 mWebViewCore.sendMessage(EventHub.INSERT_TEXT, 6058 pasteText.toString()); 6059 } 6060 } 6061 } 6062 6063 /** 6064 * @hide This is an implementation detail. 6065 */ 6066 public SearchBox getSearchBox() { 6067 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 6068 return null; 6069 } 6070 return mWebViewCore.getBrowserFrame().getSearchBox(); 6071 } 6072 6073 /** 6074 * Returns the currently highlighted text as a string. 6075 */ 6076 String getSelection() { 6077 if (mNativeClass == 0) return ""; 6078 return nativeGetSelection(); 6079 } 6080 6081 @Override 6082 protected void onAttachedToWindow() { 6083 super.onAttachedToWindow(); 6084 if (hasWindowFocus()) setActive(true); 6085 final ViewTreeObserver treeObserver = getViewTreeObserver(); 6086 if (mGlobalLayoutListener == null) { 6087 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 6088 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 6089 } 6090 if (mScrollChangedListener == null) { 6091 mScrollChangedListener = new InnerScrollChangedListener(); 6092 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 6093 } 6094 6095 addAccessibilityApisToJavaScript(); 6096 6097 mTouchEventQueue.reset(); 6098 } 6099 6100 @Override 6101 protected void onDetachedFromWindow() { 6102 clearHelpers(); 6103 mZoomManager.dismissZoomPicker(); 6104 if (hasWindowFocus()) setActive(false); 6105 6106 final ViewTreeObserver treeObserver = getViewTreeObserver(); 6107 if (mGlobalLayoutListener != null) { 6108 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 6109 mGlobalLayoutListener = null; 6110 } 6111 if (mScrollChangedListener != null) { 6112 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 6113 mScrollChangedListener = null; 6114 } 6115 6116 removeAccessibilityApisFromJavaScript(); 6117 6118 super.onDetachedFromWindow(); 6119 } 6120 6121 @Override 6122 protected void onVisibilityChanged(View changedView, int visibility) { 6123 super.onVisibilityChanged(changedView, visibility); 6124 // The zoomManager may be null if the webview is created from XML that 6125 // specifies the view's visibility param as not visible (see http://b/2794841) 6126 if (visibility != View.VISIBLE && mZoomManager != null) { 6127 mZoomManager.dismissZoomPicker(); 6128 } 6129 updateDrawingState(); 6130 } 6131 6132 /** 6133 * @deprecated WebView no longer needs to implement 6134 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 6135 */ 6136 @Override 6137 // Cannot add @hide as this can always be accessed via the interface. 6138 @Deprecated 6139 public void onChildViewAdded(View parent, View child) {} 6140 6141 /** 6142 * @deprecated WebView no longer needs to implement 6143 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 6144 */ 6145 @Override 6146 // Cannot add @hide as this can always be accessed via the interface. 6147 @Deprecated 6148 public void onChildViewRemoved(View p, View child) {} 6149 6150 /** 6151 * @deprecated WebView should not have implemented 6152 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 6153 */ 6154 @Override 6155 // Cannot add @hide as this can always be accessed via the interface. 6156 @Deprecated 6157 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 6158 } 6159 6160 void setActive(boolean active) { 6161 if (active) { 6162 if (hasFocus()) { 6163 // If our window regained focus, and we have focus, then begin 6164 // drawing the cursor ring 6165 mDrawCursorRing = !inEditingMode(); 6166 setFocusControllerActive(true); 6167 } else { 6168 mDrawCursorRing = false; 6169 if (!inEditingMode()) { 6170 // If our window gained focus, but we do not have it, do not 6171 // draw the cursor ring. 6172 setFocusControllerActive(false); 6173 } 6174 // We do not call recordButtons here because we assume 6175 // that when we lost focus, or window focus, it got called with 6176 // false for the first parameter 6177 } 6178 } else { 6179 if (!mZoomManager.isZoomPickerVisible()) { 6180 /* 6181 * The external zoom controls come in their own window, so our 6182 * window loses focus. Our policy is to not draw the cursor ring 6183 * if our window is not focused, but this is an exception since 6184 * the user can still navigate the web page with the zoom 6185 * controls showing. 6186 */ 6187 mDrawCursorRing = false; 6188 } 6189 mKeysPressed.clear(); 6190 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6191 mTouchMode = TOUCH_DONE_MODE; 6192 setFocusControllerActive(false); 6193 } 6194 invalidate(); 6195 } 6196 6197 // To avoid drawing the cursor ring, and remove the TextView when our window 6198 // loses focus. 6199 @Override 6200 public void onWindowFocusChanged(boolean hasWindowFocus) { 6201 setActive(hasWindowFocus); 6202 if (hasWindowFocus) { 6203 JWebCoreJavaBridge.setActiveWebView(this); 6204 if (mPictureUpdatePausedForFocusChange) { 6205 WebViewCore.resumeUpdatePicture(mWebViewCore); 6206 mPictureUpdatePausedForFocusChange = false; 6207 } 6208 } else { 6209 JWebCoreJavaBridge.removeActiveWebView(this); 6210 final WebSettings settings = getSettings(); 6211 if (settings != null && settings.enableSmoothTransition() && 6212 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 6213 WebViewCore.pauseUpdatePicture(mWebViewCore); 6214 mPictureUpdatePausedForFocusChange = true; 6215 } 6216 } 6217 super.onWindowFocusChanged(hasWindowFocus); 6218 } 6219 6220 /* 6221 * Pass a message to WebCore Thread, telling the WebCore::Page's 6222 * FocusController to be "inactive" so that it will 6223 * not draw the blinking cursor. It gets set to "active" to draw the cursor 6224 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 6225 */ 6226 /* package */ void setFocusControllerActive(boolean active) { 6227 if (mWebViewCore == null) return; 6228 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 6229 // Need to send this message after the document regains focus. 6230 if (active && mListBoxMessage != null) { 6231 mWebViewCore.sendMessage(mListBoxMessage); 6232 mListBoxMessage = null; 6233 } 6234 } 6235 6236 @Override 6237 protected void onFocusChanged(boolean focused, int direction, 6238 Rect previouslyFocusedRect) { 6239 if (DebugFlags.WEB_VIEW) { 6240 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 6241 } 6242 if (focused) { 6243 // When we regain focus, if we have window focus, resume drawing 6244 // the cursor ring 6245 if (hasWindowFocus()) { 6246 mDrawCursorRing = !inEditingMode(); 6247 setFocusControllerActive(true); 6248 //} else { 6249 // The WebView has gained focus while we do not have 6250 // windowfocus. When our window lost focus, we should have 6251 // called recordButtons(false...) 6252 } 6253 } else { 6254 // When we lost focus, unless focus went to the TextView (which is 6255 // true if we are in editing mode), stop drawing the cursor ring. 6256 mDrawCursorRing = false; 6257 if (!inEditingMode()) { 6258 setFocusControllerActive(false); 6259 } 6260 mKeysPressed.clear(); 6261 } 6262 6263 super.onFocusChanged(focused, direction, previouslyFocusedRect); 6264 } 6265 6266 void setGLRectViewport() { 6267 // Use the getGlobalVisibleRect() to get the intersection among the parents 6268 // visible == false means we're clipped - send a null rect down to indicate that 6269 // we should not draw 6270 boolean visible = getGlobalVisibleRect(mGLRectViewport); 6271 if (visible) { 6272 // Then need to invert the Y axis, just for GL 6273 View rootView = getRootView(); 6274 int rootViewHeight = rootView.getHeight(); 6275 mViewRectViewport.set(mGLRectViewport); 6276 int savedWebViewBottom = mGLRectViewport.bottom; 6277 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 6278 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 6279 mGLViewportEmpty = false; 6280 } else { 6281 mGLViewportEmpty = true; 6282 } 6283 calcOurContentVisibleRectF(mVisibleContentRect); 6284 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 6285 mGLViewportEmpty ? null : mViewRectViewport, 6286 mVisibleContentRect, getScale()); 6287 } 6288 6289 /** 6290 * @hide 6291 */ 6292 @Override 6293 protected boolean setFrame(int left, int top, int right, int bottom) { 6294 boolean changed = super.setFrame(left, top, right, bottom); 6295 if (!changed && mHeightCanMeasure) { 6296 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 6297 // in WebViewCore after we get the first layout. We do call 6298 // requestLayout() when we get contentSizeChanged(). But the View 6299 // system won't call onSizeChanged if the dimension is not changed. 6300 // In this case, we need to call sendViewSizeZoom() explicitly to 6301 // notify the WebKit about the new dimensions. 6302 sendViewSizeZoom(false); 6303 } 6304 setGLRectViewport(); 6305 return changed; 6306 } 6307 6308 @Override 6309 protected void onSizeChanged(int w, int h, int ow, int oh) { 6310 super.onSizeChanged(w, h, ow, oh); 6311 6312 // adjust the max viewport width depending on the view dimensions. This 6313 // is to ensure the scaling is not going insane. So do not shrink it if 6314 // the view size is temporarily smaller, e.g. when soft keyboard is up. 6315 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 6316 if (newMaxViewportWidth > sMaxViewportWidth) { 6317 sMaxViewportWidth = newMaxViewportWidth; 6318 } 6319 6320 mZoomManager.onSizeChanged(w, h, ow, oh); 6321 6322 if (mLoadedPicture != null && mDelaySetPicture == null) { 6323 // Size changes normally result in a new picture 6324 // Re-set the loaded picture to simulate that 6325 // However, do not update the base layer as that hasn't changed 6326 setNewPicture(mLoadedPicture, false); 6327 } 6328 } 6329 6330 @Override 6331 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 6332 super.onScrollChanged(l, t, oldl, oldt); 6333 if (!mInOverScrollMode) { 6334 sendOurVisibleRect(); 6335 // update WebKit if visible title bar height changed. The logic is same 6336 // as getVisibleTitleHeightImpl. 6337 int titleHeight = getTitleHeight(); 6338 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 6339 sendViewSizeZoom(false); 6340 } 6341 } 6342 } 6343 6344 @Override 6345 public boolean dispatchKeyEvent(KeyEvent event) { 6346 switch (event.getAction()) { 6347 case KeyEvent.ACTION_DOWN: 6348 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 6349 break; 6350 case KeyEvent.ACTION_MULTIPLE: 6351 // Always accept the action. 6352 break; 6353 case KeyEvent.ACTION_UP: 6354 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 6355 if (location == -1) { 6356 // We did not receive the key down for this key, so do not 6357 // handle the key up. 6358 return false; 6359 } else { 6360 // We did receive the key down. Handle the key up, and 6361 // remove it from our pressed keys. 6362 mKeysPressed.remove(location); 6363 } 6364 break; 6365 default: 6366 // Accept the action. This should not happen, unless a new 6367 // action is added to KeyEvent. 6368 break; 6369 } 6370 if (inEditingMode() && mWebTextView.isFocused()) { 6371 // Ensure that the WebTextView gets the event, even if it does 6372 // not currently have a bounds. 6373 return mWebTextView.dispatchKeyEvent(event); 6374 } else { 6375 return super.dispatchKeyEvent(event); 6376 } 6377 } 6378 6379 /* 6380 * Here is the snap align logic: 6381 * 1. If it starts nearly horizontally or vertically, snap align; 6382 * 2. If there is a dramitic direction change, let it go; 6383 * 6384 * Adjustable parameters. Angle is the radians on a unit circle, limited 6385 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 6386 */ 6387 private static final float HSLOPE_TO_START_SNAP = .25f; 6388 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 6389 private static final float VSLOPE_TO_START_SNAP = 1.25f; 6390 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 6391 /* 6392 * These values are used to influence the average angle when entering 6393 * snap mode. If is is the first movement entering snap, we set the average 6394 * to the appropriate ideal. If the user is entering into snap after the 6395 * first movement, then we average the average angle with these values. 6396 */ 6397 private static final float ANGLE_VERT = 2f; 6398 private static final float ANGLE_HORIZ = 0f; 6399 /* 6400 * The modified moving average weight. 6401 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 6402 */ 6403 private static final float MMA_WEIGHT_N = 5; 6404 6405 private boolean hitFocusedPlugin(int contentX, int contentY) { 6406 if (DebugFlags.WEB_VIEW) { 6407 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 6408 Rect r = nativeFocusNodeBounds(); 6409 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 6410 + ", " + r.right + ", " + r.bottom + ")"); 6411 } 6412 return nativeFocusIsPlugin() 6413 && nativeFocusNodeBounds().contains(contentX, contentY); 6414 } 6415 6416 private boolean shouldForwardTouchEvent() { 6417 if (mFullScreenHolder != null) return true; 6418 if (mBlockWebkitViewMessages) return false; 6419 return mForwardTouchEvents 6420 && !mSelectingText 6421 && mPreventDefault != PREVENT_DEFAULT_IGNORE 6422 && mPreventDefault != PREVENT_DEFAULT_NO; 6423 } 6424 6425 private boolean inFullScreenMode() { 6426 return mFullScreenHolder != null; 6427 } 6428 6429 private void dismissFullScreenMode() { 6430 if (inFullScreenMode()) { 6431 mFullScreenHolder.hide(); 6432 mFullScreenHolder = null; 6433 invalidate(); 6434 } 6435 } 6436 6437 void onPinchToZoomAnimationStart() { 6438 // cancel the single touch handling 6439 cancelTouch(); 6440 onZoomAnimationStart(); 6441 } 6442 6443 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 6444 onZoomAnimationEnd(); 6445 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 6446 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 6447 // as it may trigger the unwanted fling. 6448 mTouchMode = TOUCH_PINCH_DRAG; 6449 mConfirmMove = true; 6450 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 6451 } 6452 6453 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 6454 // layer is found. 6455 private void startScrollingLayer(float x, float y) { 6456 int contentX = viewToContentX((int) x + mScrollX); 6457 int contentY = viewToContentY((int) y + mScrollY); 6458 mCurrentScrollingLayerId = nativeScrollableLayer(contentX, contentY, 6459 mScrollingLayerRect, mScrollingLayerBounds); 6460 if (mCurrentScrollingLayerId != 0) { 6461 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6462 } 6463 } 6464 6465 // 1/(density * density) used to compute the distance between points. 6466 // Computed in init(). 6467 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 6468 6469 // The distance between two points reported in onTouchEvent scaled by the 6470 // density of the screen. 6471 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 6472 6473 @Override 6474 public boolean onHoverEvent(MotionEvent event) { 6475 if (mNativeClass == 0) { 6476 return false; 6477 } 6478 WebViewCore.CursorData data = cursorDataNoPosition(); 6479 data.mX = viewToContentX((int) event.getX() + mScrollX); 6480 data.mY = viewToContentY((int) event.getY() + mScrollY); 6481 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 6482 return true; 6483 } 6484 6485 @Override 6486 public boolean onTouchEvent(MotionEvent ev) { 6487 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 6488 return false; 6489 } 6490 6491 if (DebugFlags.WEB_VIEW) { 6492 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 6493 + " mTouchMode=" + mTouchMode 6494 + " numPointers=" + ev.getPointerCount()); 6495 } 6496 6497 // If WebKit wasn't interested in this multitouch gesture, enqueue 6498 // the event for handling directly rather than making the round trip 6499 // to WebKit and back. 6500 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 6501 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 6502 } else { 6503 mTouchEventQueue.enqueueTouchEvent(ev); 6504 } 6505 6506 // Since all events are handled asynchronously, we always want the gesture stream. 6507 return true; 6508 } 6509 6510 private float calculateDragAngle(int dx, int dy) { 6511 dx = Math.abs(dx); 6512 dy = Math.abs(dy); 6513 return (float) Math.atan2(dy, dx); 6514 } 6515 6516 /* 6517 * Common code for single touch and multi-touch. 6518 * (x, y) denotes current focus point, which is the touch point for single touch 6519 * and the middle point for multi-touch. 6520 */ 6521 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 6522 long eventTime = ev.getEventTime(); 6523 6524 // Due to the touch screen edge effect, a touch closer to the edge 6525 // always snapped to the edge. As getViewWidth() can be different from 6526 // getWidth() due to the scrollbar, adjusting the point to match 6527 // getViewWidth(). Same applied to the height. 6528 x = Math.min(x, getViewWidth() - 1); 6529 y = Math.min(y, getViewHeightWithTitle() - 1); 6530 6531 int deltaX = mLastTouchX - x; 6532 int deltaY = mLastTouchY - y; 6533 int contentX = viewToContentX(x + mScrollX); 6534 int contentY = viewToContentY(y + mScrollY); 6535 6536 switch (action) { 6537 case MotionEvent.ACTION_DOWN: { 6538 mPreventDefault = PREVENT_DEFAULT_NO; 6539 mConfirmMove = false; 6540 mInitialHitTestResult = null; 6541 if (!mScroller.isFinished()) { 6542 // stop the current scroll animation, but if this is 6543 // the start of a fling, allow it to add to the current 6544 // fling's velocity 6545 mScroller.abortAnimation(); 6546 mTouchMode = TOUCH_DRAG_START_MODE; 6547 mConfirmMove = true; 6548 nativeSetIsScrolling(false); 6549 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 6550 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 6551 if (sDisableNavcache) { 6552 removeTouchHighlight(); 6553 } 6554 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 6555 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 6556 } else { 6557 // commit the short press action for the previous tap 6558 doShortPress(); 6559 mTouchMode = TOUCH_INIT_MODE; 6560 mDeferTouchProcess = !mBlockWebkitViewMessages 6561 && (!inFullScreenMode() && mForwardTouchEvents) 6562 ? hitFocusedPlugin(contentX, contentY) 6563 : false; 6564 } 6565 } else { // the normal case 6566 mTouchMode = TOUCH_INIT_MODE; 6567 mDeferTouchProcess = !mBlockWebkitViewMessages 6568 && (!inFullScreenMode() && mForwardTouchEvents) 6569 ? hitFocusedPlugin(contentX, contentY) 6570 : false; 6571 if (!mBlockWebkitViewMessages) { 6572 mWebViewCore.sendMessage( 6573 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 6574 } 6575 if (sDisableNavcache) { 6576 TouchHighlightData data = new TouchHighlightData(); 6577 data.mX = contentX; 6578 data.mY = contentY; 6579 data.mNativeLayerRect = new Rect(); 6580 data.mNativeLayer = nativeScrollableLayer( 6581 contentX, contentY, data.mNativeLayerRect, null); 6582 data.mSlop = viewToContentDimension(mNavSlop); 6583 mTouchHighlightRegion.setEmpty(); 6584 if (!mBlockWebkitViewMessages) { 6585 mTouchHighlightRequested = System.currentTimeMillis(); 6586 mWebViewCore.sendMessageAtFrontOfQueue( 6587 EventHub.HIT_TEST, data); 6588 } 6589 if (DEBUG_TOUCH_HIGHLIGHT) { 6590 if (getSettings().getNavDump()) { 6591 mTouchHighlightX = x + mScrollX; 6592 mTouchHighlightY = y + mScrollY; 6593 mPrivateHandler.postDelayed(new Runnable() { 6594 @Override 6595 public void run() { 6596 mTouchHighlightX = mTouchHighlightY = 0; 6597 invalidate(); 6598 } 6599 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 6600 } 6601 } 6602 } 6603 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 6604 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 6605 (eventTime - mLastTouchUpTime), eventTime); 6606 } 6607 mSelectionStarted = false; 6608 if (mSelectingText) { 6609 int shiftedY = y - getTitleHeight() + mScrollY; 6610 int shiftedX = x + mScrollX; 6611 if (mSelectHandleCenter != null && mSelectHandleCenter.getBounds() 6612 .contains(shiftedX, shiftedY)) { 6613 mSelectionStarted = true; 6614 mSelectDraggingCursor = mSelectCursorBase; 6615 mPrivateHandler.removeMessages(CLEAR_CARET_HANDLE); 6616 } else if (mSelectHandleLeft != null 6617 && mSelectHandleLeft.getBounds() 6618 .contains(shiftedX, shiftedY)) { 6619 mSelectionStarted = true; 6620 mSelectDraggingCursor = mSelectCursorBase; 6621 } else if (mSelectHandleRight != null 6622 && mSelectHandleRight.getBounds() 6623 .contains(shiftedX, shiftedY)) { 6624 mSelectionStarted = true; 6625 mSelectDraggingCursor = mSelectCursorExtent; 6626 } else if (mIsCaretSelection) { 6627 selectionDone(); 6628 } 6629 if (mSelectDraggingCursor != null) { 6630 mSelectDraggingOffset.set( 6631 mSelectDraggingCursor.left - contentX, 6632 mSelectDraggingCursor.top - contentY); 6633 } 6634 if (DebugFlags.WEB_VIEW) { 6635 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 6636 } 6637 } 6638 } 6639 // Trigger the link 6640 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 6641 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 6642 mPrivateHandler.sendEmptyMessageDelayed( 6643 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 6644 mPrivateHandler.sendEmptyMessageDelayed( 6645 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 6646 if (inFullScreenMode() || mDeferTouchProcess) { 6647 mPreventDefault = PREVENT_DEFAULT_YES; 6648 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 6649 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 6650 } else { 6651 mPreventDefault = PREVENT_DEFAULT_NO; 6652 } 6653 // pass the touch events from UI thread to WebCore thread 6654 if (shouldForwardTouchEvent()) { 6655 TouchEventData ted = new TouchEventData(); 6656 ted.mAction = action; 6657 ted.mIds = new int[1]; 6658 ted.mIds[0] = ev.getPointerId(0); 6659 ted.mPoints = new Point[1]; 6660 ted.mPoints[0] = new Point(contentX, contentY); 6661 ted.mPointsInView = new Point[1]; 6662 ted.mPointsInView[0] = new Point(x, y); 6663 ted.mMetaState = ev.getMetaState(); 6664 ted.mReprocess = mDeferTouchProcess; 6665 ted.mNativeLayer = nativeScrollableLayer( 6666 contentX, contentY, ted.mNativeLayerRect, null); 6667 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6668 mTouchEventQueue.preQueueTouchEventData(ted); 6669 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6670 if (mDeferTouchProcess) { 6671 // still needs to set them for compute deltaX/Y 6672 mLastTouchX = x; 6673 mLastTouchY = y; 6674 break; 6675 } 6676 if (!inFullScreenMode()) { 6677 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 6678 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6679 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6680 action, 0), TAP_TIMEOUT); 6681 } 6682 } 6683 } 6684 startTouch(x, y, eventTime); 6685 break; 6686 } 6687 case MotionEvent.ACTION_MOVE: { 6688 boolean firstMove = false; 6689 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 6690 >= mTouchSlopSquare) { 6691 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6692 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6693 mConfirmMove = true; 6694 firstMove = true; 6695 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6696 mTouchMode = TOUCH_INIT_MODE; 6697 } 6698 if (sDisableNavcache) { 6699 removeTouchHighlight(); 6700 } 6701 } 6702 if (mSelectingText && mSelectionStarted) { 6703 if (DebugFlags.WEB_VIEW) { 6704 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 6705 } 6706 ViewParent parent = getParent(); 6707 if (parent != null) { 6708 parent.requestDisallowInterceptTouchEvent(true); 6709 } 6710 if (deltaX != 0 || deltaY != 0) { 6711 mSelectDraggingCursor.offsetTo( 6712 contentX + mSelectDraggingOffset.x, 6713 contentY + mSelectDraggingOffset.y); 6714 updateWebkitSelection(); 6715 mLastTouchX = x; 6716 mLastTouchY = y; 6717 invalidate(); 6718 } 6719 break; 6720 } 6721 6722 // pass the touch events from UI thread to WebCore thread 6723 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 6724 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 6725 TouchEventData ted = new TouchEventData(); 6726 ted.mAction = action; 6727 ted.mIds = new int[1]; 6728 ted.mIds[0] = ev.getPointerId(0); 6729 ted.mPoints = new Point[1]; 6730 ted.mPoints[0] = new Point(contentX, contentY); 6731 ted.mPointsInView = new Point[1]; 6732 ted.mPointsInView[0] = new Point(x, y); 6733 ted.mMetaState = ev.getMetaState(); 6734 ted.mReprocess = mDeferTouchProcess; 6735 ted.mNativeLayer = mCurrentScrollingLayerId; 6736 ted.mNativeLayerRect.set(mScrollingLayerRect); 6737 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6738 mTouchEventQueue.preQueueTouchEventData(ted); 6739 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6740 mLastSentTouchTime = eventTime; 6741 if (mDeferTouchProcess) { 6742 break; 6743 } 6744 if (firstMove && !inFullScreenMode()) { 6745 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6746 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6747 action, 0), TAP_TIMEOUT); 6748 } 6749 } 6750 if (mTouchMode == TOUCH_DONE_MODE 6751 || mPreventDefault == PREVENT_DEFAULT_YES) { 6752 // no dragging during scroll zoom animation, or when prevent 6753 // default is yes 6754 break; 6755 } 6756 if (mVelocityTracker == null) { 6757 Log.e(LOGTAG, "Got null mVelocityTracker when " 6758 + "mPreventDefault = " + mPreventDefault 6759 + " mDeferTouchProcess = " + mDeferTouchProcess 6760 + " mTouchMode = " + mTouchMode); 6761 } else { 6762 mVelocityTracker.addMovement(ev); 6763 } 6764 6765 if (mTouchMode != TOUCH_DRAG_MODE && 6766 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6767 6768 if (!mConfirmMove) { 6769 break; 6770 } 6771 6772 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6773 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6774 // track mLastTouchTime as we may need to do fling at 6775 // ACTION_UP 6776 mLastTouchTime = eventTime; 6777 break; 6778 } 6779 6780 // Only lock dragging to one axis if we don't have a scale in progress. 6781 // Scaling implies free-roaming movement. Note this is only ever a question 6782 // if mZoomManager.supportsPanDuringZoom() is true. 6783 final ScaleGestureDetector detector = 6784 mZoomManager.getMultiTouchGestureDetector(); 6785 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6786 if (detector == null || !detector.isInProgress()) { 6787 // if it starts nearly horizontal or vertical, enforce it 6788 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6789 mSnapScrollMode = SNAP_X; 6790 mSnapPositive = deltaX > 0; 6791 mAverageAngle = ANGLE_HORIZ; 6792 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6793 mSnapScrollMode = SNAP_Y; 6794 mSnapPositive = deltaY > 0; 6795 mAverageAngle = ANGLE_VERT; 6796 } 6797 } 6798 6799 mTouchMode = TOUCH_DRAG_MODE; 6800 mLastTouchX = x; 6801 mLastTouchY = y; 6802 deltaX = 0; 6803 deltaY = 0; 6804 6805 startScrollingLayer(x, y); 6806 startDrag(); 6807 } 6808 6809 // do pan 6810 boolean done = false; 6811 boolean keepScrollBarsVisible = false; 6812 if (deltaX == 0 && deltaY == 0) { 6813 keepScrollBarsVisible = done = true; 6814 } else { 6815 mAverageAngle += 6816 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6817 / MMA_WEIGHT_N; 6818 if (mSnapScrollMode != SNAP_NONE) { 6819 if (mSnapScrollMode == SNAP_Y) { 6820 // radical change means getting out of snap mode 6821 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6822 mSnapScrollMode = SNAP_NONE; 6823 } 6824 } 6825 if (mSnapScrollMode == SNAP_X) { 6826 // radical change means getting out of snap mode 6827 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6828 mSnapScrollMode = SNAP_NONE; 6829 } 6830 } 6831 } else { 6832 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6833 mSnapScrollMode = SNAP_X; 6834 mSnapPositive = deltaX > 0; 6835 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6836 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6837 mSnapScrollMode = SNAP_Y; 6838 mSnapPositive = deltaY > 0; 6839 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6840 } 6841 } 6842 if (mSnapScrollMode != SNAP_NONE) { 6843 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6844 deltaY = 0; 6845 } else { 6846 deltaX = 0; 6847 } 6848 } 6849 mLastTouchX = x; 6850 mLastTouchY = y; 6851 6852 if (deltaX * deltaX + deltaY * deltaY > mTouchSlopSquare) { 6853 mHeldMotionless = MOTIONLESS_FALSE; 6854 nativeSetIsScrolling(true); 6855 } else { 6856 mHeldMotionless = MOTIONLESS_TRUE; 6857 nativeSetIsScrolling(false); 6858 keepScrollBarsVisible = true; 6859 } 6860 6861 mLastTouchTime = eventTime; 6862 } 6863 6864 doDrag(deltaX, deltaY); 6865 6866 // Turn off scrollbars when dragging a layer. 6867 if (keepScrollBarsVisible && 6868 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6869 if (mHeldMotionless != MOTIONLESS_TRUE) { 6870 mHeldMotionless = MOTIONLESS_TRUE; 6871 invalidate(); 6872 } 6873 // keep the scrollbar on the screen even there is no scroll 6874 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6875 false); 6876 // Post a message so that we'll keep them alive while we're not scrolling. 6877 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6878 .obtainMessage(AWAKEN_SCROLL_BARS), 6879 ViewConfiguration.getScrollDefaultDelay()); 6880 // return false to indicate that we can't pan out of the 6881 // view space 6882 return !done; 6883 } else { 6884 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6885 } 6886 break; 6887 } 6888 case MotionEvent.ACTION_UP: { 6889 if (!isFocused()) requestFocus(); 6890 // pass the touch events from UI thread to WebCore thread 6891 if (shouldForwardTouchEvent()) { 6892 TouchEventData ted = new TouchEventData(); 6893 ted.mIds = new int[1]; 6894 ted.mIds[0] = ev.getPointerId(0); 6895 ted.mAction = action; 6896 ted.mPoints = new Point[1]; 6897 ted.mPoints[0] = new Point(contentX, contentY); 6898 ted.mPointsInView = new Point[1]; 6899 ted.mPointsInView[0] = new Point(x, y); 6900 ted.mMetaState = ev.getMetaState(); 6901 ted.mReprocess = mDeferTouchProcess; 6902 ted.mNativeLayer = mCurrentScrollingLayerId; 6903 ted.mNativeLayerRect.set(mScrollingLayerRect); 6904 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6905 mTouchEventQueue.preQueueTouchEventData(ted); 6906 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6907 } 6908 mLastTouchUpTime = eventTime; 6909 if (mSentAutoScrollMessage) { 6910 mAutoScrollX = mAutoScrollY = 0; 6911 } 6912 switch (mTouchMode) { 6913 case TOUCH_DOUBLE_TAP_MODE: // double tap 6914 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6915 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6916 if (inFullScreenMode() || mDeferTouchProcess) { 6917 TouchEventData ted = new TouchEventData(); 6918 ted.mIds = new int[1]; 6919 ted.mIds[0] = ev.getPointerId(0); 6920 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6921 ted.mPoints = new Point[1]; 6922 ted.mPoints[0] = new Point(contentX, contentY); 6923 ted.mPointsInView = new Point[1]; 6924 ted.mPointsInView[0] = new Point(x, y); 6925 ted.mMetaState = ev.getMetaState(); 6926 ted.mReprocess = mDeferTouchProcess; 6927 ted.mNativeLayer = nativeScrollableLayer( 6928 contentX, contentY, 6929 ted.mNativeLayerRect, null); 6930 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6931 mTouchEventQueue.preQueueTouchEventData(ted); 6932 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6933 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6934 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6935 mTouchMode = TOUCH_DONE_MODE; 6936 } 6937 break; 6938 case TOUCH_INIT_MODE: // tap 6939 case TOUCH_SHORTPRESS_START_MODE: 6940 case TOUCH_SHORTPRESS_MODE: 6941 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6942 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6943 if (mConfirmMove) { 6944 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6945 " WebCore's response for touch down."); 6946 if (mPreventDefault != PREVENT_DEFAULT_YES 6947 && (computeMaxScrollX() > 0 6948 || computeMaxScrollY() > 0)) { 6949 // If the user has performed a very quick touch 6950 // sequence it is possible that we may get here 6951 // before WebCore has had a chance to process the events. 6952 // In this case, any call to preventDefault in the 6953 // JS touch handler will not have been executed yet. 6954 // Hence we will see both the UI (now) and WebCore 6955 // (when context switches) handling the event, 6956 // regardless of whether the web developer actually 6957 // doeses preventDefault in their touch handler. This 6958 // is the nature of our asynchronous touch model. 6959 6960 // we will not rewrite drag code here, but we 6961 // will try fling if it applies. 6962 WebViewCore.reducePriority(); 6963 // to get better performance, pause updating the 6964 // picture 6965 WebViewCore.pauseUpdatePicture(mWebViewCore); 6966 // fall through to TOUCH_DRAG_MODE 6967 } else { 6968 // WebKit may consume the touch event and modify 6969 // DOM. drawContentPicture() will be called with 6970 // animateSroll as true for better performance. 6971 // Force redraw in high-quality. 6972 invalidate(); 6973 break; 6974 } 6975 } else { 6976 if (mSelectingText) { 6977 // tapping on selection or controls does nothing 6978 if (!mSelectionStarted) { 6979 selectionDone(); 6980 } 6981 break; 6982 } 6983 // only trigger double tap if the WebView is 6984 // scalable 6985 if (mTouchMode == TOUCH_INIT_MODE 6986 && (canZoomIn() || canZoomOut())) { 6987 mPrivateHandler.sendEmptyMessageDelayed( 6988 RELEASE_SINGLE_TAP, ViewConfiguration 6989 .getDoubleTapTimeout()); 6990 } else { 6991 doShortPress(); 6992 } 6993 break; 6994 } 6995 case TOUCH_DRAG_MODE: 6996 case TOUCH_DRAG_LAYER_MODE: 6997 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6998 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6999 // if the user waits a while w/o moving before the 7000 // up, we don't want to do a fling 7001 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 7002 if (mVelocityTracker == null) { 7003 Log.e(LOGTAG, "Got null mVelocityTracker when " 7004 + "mPreventDefault = " 7005 + mPreventDefault 7006 + " mDeferTouchProcess = " 7007 + mDeferTouchProcess); 7008 } else { 7009 mVelocityTracker.addMovement(ev); 7010 } 7011 // set to MOTIONLESS_IGNORE so that it won't keep 7012 // removing and sending message in 7013 // drawCoreAndCursorRing() 7014 mHeldMotionless = MOTIONLESS_IGNORE; 7015 doFling(); 7016 break; 7017 } else { 7018 if (mScroller.springBack(mScrollX, mScrollY, 0, 7019 computeMaxScrollX(), 0, 7020 computeMaxScrollY())) { 7021 invalidate(); 7022 } 7023 } 7024 // redraw in high-quality, as we're done dragging 7025 mHeldMotionless = MOTIONLESS_TRUE; 7026 invalidate(); 7027 // fall through 7028 case TOUCH_DRAG_START_MODE: 7029 // TOUCH_DRAG_START_MODE should not happen for the real 7030 // device as we almost certain will get a MOVE. But this 7031 // is possible on emulator. 7032 mLastVelocity = 0; 7033 WebViewCore.resumePriority(); 7034 if (!mSelectingText) { 7035 WebViewCore.resumeUpdatePicture(mWebViewCore); 7036 } 7037 break; 7038 } 7039 stopTouch(); 7040 break; 7041 } 7042 case MotionEvent.ACTION_CANCEL: { 7043 if (mTouchMode == TOUCH_DRAG_MODE) { 7044 mScroller.springBack(mScrollX, mScrollY, 0, 7045 computeMaxScrollX(), 0, computeMaxScrollY()); 7046 invalidate(); 7047 } 7048 cancelWebCoreTouchEvent(contentX, contentY, false); 7049 cancelTouch(); 7050 break; 7051 } 7052 } 7053 return true; 7054 } 7055 7056 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 7057 TouchEventData ted = new TouchEventData(); 7058 ted.mAction = ev.getActionMasked(); 7059 final int count = ev.getPointerCount(); 7060 ted.mIds = new int[count]; 7061 ted.mPoints = new Point[count]; 7062 ted.mPointsInView = new Point[count]; 7063 for (int c = 0; c < count; c++) { 7064 ted.mIds[c] = ev.getPointerId(c); 7065 int x = viewToContentX((int) ev.getX(c) + mScrollX); 7066 int y = viewToContentY((int) ev.getY(c) + mScrollY); 7067 ted.mPoints[c] = new Point(x, y); 7068 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 7069 } 7070 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 7071 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 7072 ted.mActionIndex = ev.getActionIndex(); 7073 } 7074 ted.mMetaState = ev.getMetaState(); 7075 ted.mReprocess = true; 7076 ted.mMotionEvent = MotionEvent.obtain(ev); 7077 ted.mSequence = sequence; 7078 mTouchEventQueue.preQueueTouchEventData(ted); 7079 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7080 cancelLongPress(); 7081 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7082 } 7083 7084 void handleMultiTouchInWebView(MotionEvent ev) { 7085 if (DebugFlags.WEB_VIEW) { 7086 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 7087 + " mTouchMode=" + mTouchMode 7088 + " numPointers=" + ev.getPointerCount() 7089 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 7090 } 7091 7092 final ScaleGestureDetector detector = 7093 mZoomManager.getMultiTouchGestureDetector(); 7094 7095 // A few apps use WebView but don't instantiate gesture detector. 7096 // We don't need to support multi touch for them. 7097 if (detector == null) return; 7098 7099 float x = ev.getX(); 7100 float y = ev.getY(); 7101 7102 if (mPreventDefault != PREVENT_DEFAULT_YES) { 7103 detector.onTouchEvent(ev); 7104 7105 if (detector.isInProgress()) { 7106 if (DebugFlags.WEB_VIEW) { 7107 Log.v(LOGTAG, "detector is in progress"); 7108 } 7109 mLastTouchTime = ev.getEventTime(); 7110 x = detector.getFocusX(); 7111 y = detector.getFocusY(); 7112 7113 cancelLongPress(); 7114 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7115 if (!mZoomManager.supportsPanDuringZoom()) { 7116 return; 7117 } 7118 mTouchMode = TOUCH_DRAG_MODE; 7119 if (mVelocityTracker == null) { 7120 mVelocityTracker = VelocityTracker.obtain(); 7121 } 7122 } 7123 } 7124 7125 int action = ev.getActionMasked(); 7126 if (action == MotionEvent.ACTION_POINTER_DOWN) { 7127 cancelTouch(); 7128 action = MotionEvent.ACTION_DOWN; 7129 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 7130 // set mLastTouchX/Y to the remaining points for multi-touch. 7131 mLastTouchX = Math.round(x); 7132 mLastTouchY = Math.round(y); 7133 } else if (action == MotionEvent.ACTION_MOVE) { 7134 // negative x or y indicate it is on the edge, skip it. 7135 if (x < 0 || y < 0) { 7136 return; 7137 } 7138 } 7139 7140 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 7141 } 7142 7143 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 7144 if (shouldForwardTouchEvent()) { 7145 if (removeEvents) { 7146 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 7147 } 7148 TouchEventData ted = new TouchEventData(); 7149 ted.mIds = new int[1]; 7150 ted.mIds[0] = 0; 7151 ted.mPoints = new Point[1]; 7152 ted.mPoints[0] = new Point(x, y); 7153 ted.mPointsInView = new Point[1]; 7154 int viewX = contentToViewX(x) - mScrollX; 7155 int viewY = contentToViewY(y) - mScrollY; 7156 ted.mPointsInView[0] = new Point(viewX, viewY); 7157 ted.mAction = MotionEvent.ACTION_CANCEL; 7158 ted.mNativeLayer = nativeScrollableLayer( 7159 x, y, ted.mNativeLayerRect, null); 7160 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 7161 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7162 mPreventDefault = PREVENT_DEFAULT_IGNORE; 7163 7164 if (removeEvents) { 7165 // Mark this after sending the message above; we should 7166 // be willing to ignore the cancel event that we just sent. 7167 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 7168 } 7169 } 7170 } 7171 7172 private void startTouch(float x, float y, long eventTime) { 7173 // Remember where the motion event started 7174 mStartTouchX = mLastTouchX = Math.round(x); 7175 mStartTouchY = mLastTouchY = Math.round(y); 7176 mLastTouchTime = eventTime; 7177 mVelocityTracker = VelocityTracker.obtain(); 7178 mSnapScrollMode = SNAP_NONE; 7179 mPrivateHandler.sendEmptyMessageDelayed(UPDATE_SELECTION, 7180 ViewConfiguration.getTapTimeout()); 7181 } 7182 7183 private void startDrag() { 7184 WebViewCore.reducePriority(); 7185 // to get better performance, pause updating the picture 7186 WebViewCore.pauseUpdatePicture(mWebViewCore); 7187 nativeSetIsScrolling(true); 7188 7189 if (!mDragFromTextInput) { 7190 nativeHideCursor(); 7191 } 7192 7193 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 7194 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 7195 mZoomManager.invokeZoomPicker(); 7196 } 7197 } 7198 7199 private void doDrag(int deltaX, int deltaY) { 7200 if ((deltaX | deltaY) != 0) { 7201 int oldX = mScrollX; 7202 int oldY = mScrollY; 7203 int rangeX = computeMaxScrollX(); 7204 int rangeY = computeMaxScrollY(); 7205 // Check for the original scrolling layer in case we change 7206 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 7207 // reached the edge of a layer but mScrollingLayer will be non-zero 7208 // if we initiated the drag on a layer. 7209 if (mCurrentScrollingLayerId != 0) { 7210 final int contentX = viewToContentDimension(deltaX); 7211 final int contentY = viewToContentDimension(deltaY); 7212 7213 // Check the scrolling bounds to see if we will actually do any 7214 // scrolling. The rectangle is in document coordinates. 7215 final int maxX = mScrollingLayerRect.right; 7216 final int maxY = mScrollingLayerRect.bottom; 7217 final int resultX = Math.max(0, 7218 Math.min(mScrollingLayerRect.left + contentX, maxX)); 7219 final int resultY = Math.max(0, 7220 Math.min(mScrollingLayerRect.top + contentY, maxY)); 7221 7222 if (resultX != mScrollingLayerRect.left || 7223 resultY != mScrollingLayerRect.top) { 7224 // In case we switched to dragging the page. 7225 mTouchMode = TOUCH_DRAG_LAYER_MODE; 7226 deltaX = contentX; 7227 deltaY = contentY; 7228 oldX = mScrollingLayerRect.left; 7229 oldY = mScrollingLayerRect.top; 7230 rangeX = maxX; 7231 rangeY = maxY; 7232 } else { 7233 // Scroll the main page if we are not going to scroll the 7234 // layer. This does not reset mScrollingLayer in case the 7235 // user changes directions and the layer can scroll the 7236 // other way. 7237 mTouchMode = TOUCH_DRAG_MODE; 7238 } 7239 } 7240 7241 if (mOverScrollGlow != null) { 7242 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 7243 } 7244 7245 overScrollBy(deltaX, deltaY, oldX, oldY, 7246 rangeX, rangeY, 7247 mOverscrollDistance, mOverscrollDistance, true); 7248 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 7249 invalidate(); 7250 } 7251 } 7252 mZoomManager.keepZoomPickerVisible(); 7253 } 7254 7255 private void stopTouch() { 7256 if (mScroller.isFinished() && !mSelectingText 7257 && (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 7258 WebViewCore.resumePriority(); 7259 WebViewCore.resumeUpdatePicture(mWebViewCore); 7260 nativeSetIsScrolling(false); 7261 } 7262 7263 // we also use mVelocityTracker == null to tell us that we are 7264 // not "moving around", so we can take the slower/prettier 7265 // mode in the drawing code 7266 if (mVelocityTracker != null) { 7267 mVelocityTracker.recycle(); 7268 mVelocityTracker = null; 7269 } 7270 7271 // Release any pulled glows 7272 if (mOverScrollGlow != null) { 7273 mOverScrollGlow.releaseAll(); 7274 } 7275 7276 if (mSelectingText) { 7277 mSelectionStarted = false; 7278 if (mIsCaretSelection) { 7279 resetCaretTimer(); 7280 } 7281 syncSelectionCursors(); 7282 invalidate(); 7283 } 7284 } 7285 7286 private void cancelTouch() { 7287 // we also use mVelocityTracker == null to tell us that we are 7288 // not "moving around", so we can take the slower/prettier 7289 // mode in the drawing code 7290 if (mVelocityTracker != null) { 7291 mVelocityTracker.recycle(); 7292 mVelocityTracker = null; 7293 } 7294 7295 if ((mTouchMode == TOUCH_DRAG_MODE 7296 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 7297 WebViewCore.resumePriority(); 7298 WebViewCore.resumeUpdatePicture(mWebViewCore); 7299 nativeSetIsScrolling(false); 7300 } 7301 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 7302 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7303 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 7304 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 7305 if (sDisableNavcache) { 7306 removeTouchHighlight(); 7307 } 7308 mHeldMotionless = MOTIONLESS_TRUE; 7309 mTouchMode = TOUCH_DONE_MODE; 7310 nativeHideCursor(); 7311 } 7312 7313 @Override 7314 public boolean onGenericMotionEvent(MotionEvent event) { 7315 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 7316 switch (event.getAction()) { 7317 case MotionEvent.ACTION_SCROLL: { 7318 final float vscroll; 7319 final float hscroll; 7320 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 7321 vscroll = 0; 7322 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 7323 } else { 7324 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 7325 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 7326 } 7327 if (hscroll != 0 || vscroll != 0) { 7328 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 7329 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 7330 if (pinScrollBy(hdelta, vdelta, false, 0)) { 7331 return true; 7332 } 7333 } 7334 } 7335 } 7336 } 7337 return super.onGenericMotionEvent(event); 7338 } 7339 7340 private long mTrackballFirstTime = 0; 7341 private long mTrackballLastTime = 0; 7342 private float mTrackballRemainsX = 0.0f; 7343 private float mTrackballRemainsY = 0.0f; 7344 private int mTrackballXMove = 0; 7345 private int mTrackballYMove = 0; 7346 private boolean mSelectingText = false; 7347 private boolean mSelectionStarted = false; 7348 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 7349 private static final int TRACKBALL_TIMEOUT = 200; 7350 private static final int TRACKBALL_WAIT = 100; 7351 private static final int TRACKBALL_SCALE = 400; 7352 private static final int TRACKBALL_SCROLL_COUNT = 5; 7353 private static final int TRACKBALL_MOVE_COUNT = 10; 7354 private static final int TRACKBALL_MULTIPLIER = 3; 7355 private static final int SELECT_CURSOR_OFFSET = 16; 7356 private static final int SELECT_SCROLL = 5; 7357 private int mSelectX = 0; 7358 private int mSelectY = 0; 7359 private boolean mFocusSizeChanged = false; 7360 private boolean mTrackballDown = false; 7361 private long mTrackballUpTime = 0; 7362 private long mLastCursorTime = 0; 7363 private Rect mLastCursorBounds; 7364 7365 // Set by default; BrowserActivity clears to interpret trackball data 7366 // directly for movement. Currently, the framework only passes 7367 // arrow key events, not trackball events, from one child to the next 7368 private boolean mMapTrackballToArrowKeys = true; 7369 7370 private DrawData mDelaySetPicture; 7371 private DrawData mLoadedPicture; 7372 7373 public void setMapTrackballToArrowKeys(boolean setMap) { 7374 checkThread(); 7375 mMapTrackballToArrowKeys = setMap; 7376 } 7377 7378 void resetTrackballTime() { 7379 mTrackballLastTime = 0; 7380 } 7381 7382 @Override 7383 public boolean onTrackballEvent(MotionEvent ev) { 7384 long time = ev.getEventTime(); 7385 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 7386 if (ev.getY() > 0) pageDown(true); 7387 if (ev.getY() < 0) pageUp(true); 7388 return true; 7389 } 7390 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 7391 if (mSelectingText) { 7392 return true; // discard press if copy in progress 7393 } 7394 mTrackballDown = true; 7395 if (mNativeClass == 0) { 7396 return false; 7397 } 7398 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 7399 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 7400 nativeSelectBestAt(mLastCursorBounds); 7401 } 7402 if (DebugFlags.WEB_VIEW) { 7403 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 7404 + " time=" + time 7405 + " mLastCursorTime=" + mLastCursorTime); 7406 } 7407 if (isInTouchMode()) requestFocusFromTouch(); 7408 return false; // let common code in onKeyDown at it 7409 } 7410 if (ev.getAction() == MotionEvent.ACTION_UP) { 7411 // LONG_PRESS_CENTER is set in common onKeyDown 7412 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 7413 mTrackballDown = false; 7414 mTrackballUpTime = time; 7415 if (mSelectingText) { 7416 copySelection(); 7417 selectionDone(); 7418 return true; // discard press if copy in progress 7419 } 7420 if (DebugFlags.WEB_VIEW) { 7421 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 7422 + " time=" + time 7423 ); 7424 } 7425 return false; // let common code in onKeyUp at it 7426 } 7427 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 7428 AccessibilityManager.getInstance(mContext).isEnabled()) { 7429 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 7430 return false; 7431 } 7432 if (mTrackballDown) { 7433 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 7434 return true; // discard move if trackball is down 7435 } 7436 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 7437 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 7438 return true; 7439 } 7440 // TODO: alternatively we can do panning as touch does 7441 switchOutDrawHistory(); 7442 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 7443 if (DebugFlags.WEB_VIEW) { 7444 Log.v(LOGTAG, "onTrackballEvent time=" 7445 + time + " last=" + mTrackballLastTime); 7446 } 7447 mTrackballFirstTime = time; 7448 mTrackballXMove = mTrackballYMove = 0; 7449 } 7450 mTrackballLastTime = time; 7451 if (DebugFlags.WEB_VIEW) { 7452 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 7453 } 7454 mTrackballRemainsX += ev.getX(); 7455 mTrackballRemainsY += ev.getY(); 7456 doTrackball(time, ev.getMetaState()); 7457 return true; 7458 } 7459 7460 private int scaleTrackballX(float xRate, int width) { 7461 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 7462 int nextXMove = xMove; 7463 if (xMove > 0) { 7464 if (xMove > mTrackballXMove) { 7465 xMove -= mTrackballXMove; 7466 } 7467 } else if (xMove < mTrackballXMove) { 7468 xMove -= mTrackballXMove; 7469 } 7470 mTrackballXMove = nextXMove; 7471 return xMove; 7472 } 7473 7474 private int scaleTrackballY(float yRate, int height) { 7475 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 7476 int nextYMove = yMove; 7477 if (yMove > 0) { 7478 if (yMove > mTrackballYMove) { 7479 yMove -= mTrackballYMove; 7480 } 7481 } else if (yMove < mTrackballYMove) { 7482 yMove -= mTrackballYMove; 7483 } 7484 mTrackballYMove = nextYMove; 7485 return yMove; 7486 } 7487 7488 private int keyCodeToSoundsEffect(int keyCode) { 7489 switch(keyCode) { 7490 case KeyEvent.KEYCODE_DPAD_UP: 7491 return SoundEffectConstants.NAVIGATION_UP; 7492 case KeyEvent.KEYCODE_DPAD_RIGHT: 7493 return SoundEffectConstants.NAVIGATION_RIGHT; 7494 case KeyEvent.KEYCODE_DPAD_DOWN: 7495 return SoundEffectConstants.NAVIGATION_DOWN; 7496 case KeyEvent.KEYCODE_DPAD_LEFT: 7497 return SoundEffectConstants.NAVIGATION_LEFT; 7498 } 7499 throw new IllegalArgumentException("keyCode must be one of " + 7500 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 7501 "KEYCODE_DPAD_LEFT}."); 7502 } 7503 7504 private void doTrackball(long time, int metaState) { 7505 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 7506 if (elapsed == 0) { 7507 elapsed = TRACKBALL_TIMEOUT; 7508 } 7509 float xRate = mTrackballRemainsX * 1000 / elapsed; 7510 float yRate = mTrackballRemainsY * 1000 / elapsed; 7511 int viewWidth = getViewWidth(); 7512 int viewHeight = getViewHeight(); 7513 float ax = Math.abs(xRate); 7514 float ay = Math.abs(yRate); 7515 float maxA = Math.max(ax, ay); 7516 if (DebugFlags.WEB_VIEW) { 7517 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 7518 + " xRate=" + xRate 7519 + " yRate=" + yRate 7520 + " mTrackballRemainsX=" + mTrackballRemainsX 7521 + " mTrackballRemainsY=" + mTrackballRemainsY); 7522 } 7523 int width = mContentWidth - viewWidth; 7524 int height = mContentHeight - viewHeight; 7525 if (width < 0) width = 0; 7526 if (height < 0) height = 0; 7527 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 7528 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 7529 maxA = Math.max(ax, ay); 7530 int count = Math.max(0, (int) maxA); 7531 int oldScrollX = mScrollX; 7532 int oldScrollY = mScrollY; 7533 if (count > 0) { 7534 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 7535 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 7536 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 7537 KeyEvent.KEYCODE_DPAD_RIGHT; 7538 count = Math.min(count, TRACKBALL_MOVE_COUNT); 7539 if (DebugFlags.WEB_VIEW) { 7540 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 7541 + " count=" + count 7542 + " mTrackballRemainsX=" + mTrackballRemainsX 7543 + " mTrackballRemainsY=" + mTrackballRemainsY); 7544 } 7545 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 7546 for (int i = 0; i < count; i++) { 7547 letPageHandleNavKey(selectKeyCode, time, true, metaState); 7548 } 7549 letPageHandleNavKey(selectKeyCode, time, false, metaState); 7550 } else if (navHandledKey(selectKeyCode, count, false, time)) { 7551 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 7552 } 7553 mTrackballRemainsX = mTrackballRemainsY = 0; 7554 } 7555 if (count >= TRACKBALL_SCROLL_COUNT) { 7556 int xMove = scaleTrackballX(xRate, width); 7557 int yMove = scaleTrackballY(yRate, height); 7558 if (DebugFlags.WEB_VIEW) { 7559 Log.v(LOGTAG, "doTrackball pinScrollBy" 7560 + " count=" + count 7561 + " xMove=" + xMove + " yMove=" + yMove 7562 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 7563 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 7564 ); 7565 } 7566 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 7567 xMove = 0; 7568 } 7569 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 7570 yMove = 0; 7571 } 7572 if (xMove != 0 || yMove != 0) { 7573 pinScrollBy(xMove, yMove, true, 0); 7574 } 7575 } 7576 } 7577 7578 /** 7579 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 7580 * @return Maximum horizontal scroll position within real content 7581 */ 7582 int computeMaxScrollX() { 7583 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 7584 } 7585 7586 /** 7587 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 7588 * @return Maximum vertical scroll position within real content 7589 */ 7590 int computeMaxScrollY() { 7591 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 7592 - getViewHeightWithTitle(), 0); 7593 } 7594 7595 boolean updateScrollCoordinates(int x, int y) { 7596 int oldX = mScrollX; 7597 int oldY = mScrollY; 7598 mScrollX = x; 7599 mScrollY = y; 7600 if (oldX != mScrollX || oldY != mScrollY) { 7601 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 7602 return true; 7603 } else { 7604 return false; 7605 } 7606 } 7607 7608 public void flingScroll(int vx, int vy) { 7609 checkThread(); 7610 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 7611 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 7612 invalidate(); 7613 } 7614 7615 private void doFling() { 7616 if (mVelocityTracker == null) { 7617 return; 7618 } 7619 int maxX = computeMaxScrollX(); 7620 int maxY = computeMaxScrollY(); 7621 7622 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 7623 int vx = (int) mVelocityTracker.getXVelocity(); 7624 int vy = (int) mVelocityTracker.getYVelocity(); 7625 7626 int scrollX = mScrollX; 7627 int scrollY = mScrollY; 7628 int overscrollDistance = mOverscrollDistance; 7629 int overflingDistance = mOverflingDistance; 7630 7631 // Use the layer's scroll data if applicable. 7632 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 7633 scrollX = mScrollingLayerRect.left; 7634 scrollY = mScrollingLayerRect.top; 7635 maxX = mScrollingLayerRect.right; 7636 maxY = mScrollingLayerRect.bottom; 7637 // No overscrolling for layers. 7638 overscrollDistance = overflingDistance = 0; 7639 } 7640 7641 if (mSnapScrollMode != SNAP_NONE) { 7642 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 7643 vy = 0; 7644 } else { 7645 vx = 0; 7646 } 7647 } 7648 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 7649 WebViewCore.resumePriority(); 7650 if (!mSelectingText) { 7651 WebViewCore.resumeUpdatePicture(mWebViewCore); 7652 } 7653 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 7654 invalidate(); 7655 } 7656 return; 7657 } 7658 float currentVelocity = mScroller.getCurrVelocity(); 7659 float velocity = (float) Math.hypot(vx, vy); 7660 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 7661 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 7662 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 7663 - Math.atan2(vy, vx))); 7664 final float circle = (float) (Math.PI) * 2.0f; 7665 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 7666 vx += currentVelocity * mLastVelX / mLastVelocity; 7667 vy += currentVelocity * mLastVelY / mLastVelocity; 7668 velocity = (float) Math.hypot(vx, vy); 7669 if (DebugFlags.WEB_VIEW) { 7670 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 7671 } 7672 } else if (DebugFlags.WEB_VIEW) { 7673 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 7674 } 7675 } else if (DebugFlags.WEB_VIEW) { 7676 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 7677 + " current=" + currentVelocity 7678 + " vx=" + vx + " vy=" + vy 7679 + " maxX=" + maxX + " maxY=" + maxY 7680 + " scrollX=" + scrollX + " scrollY=" + scrollY 7681 + " layer=" + mCurrentScrollingLayerId); 7682 } 7683 7684 // Allow sloppy flings without overscrolling at the edges. 7685 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 7686 vx = 0; 7687 } 7688 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 7689 vy = 0; 7690 } 7691 7692 if (overscrollDistance < overflingDistance) { 7693 if ((vx > 0 && scrollX == -overscrollDistance) || 7694 (vx < 0 && scrollX == maxX + overscrollDistance)) { 7695 vx = 0; 7696 } 7697 if ((vy > 0 && scrollY == -overscrollDistance) || 7698 (vy < 0 && scrollY == maxY + overscrollDistance)) { 7699 vy = 0; 7700 } 7701 } 7702 7703 mLastVelX = vx; 7704 mLastVelY = vy; 7705 mLastVelocity = velocity; 7706 7707 // no horizontal overscroll if the content just fits 7708 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 7709 maxX == 0 ? 0 : overflingDistance, overflingDistance); 7710 // Duration is calculated based on velocity. With range boundaries and overscroll 7711 // we may not know how long the final animation will take. (Hence the deprecation 7712 // warning on the call below.) It's not a big deal for scroll bars but if webcore 7713 // resumes during this effect we will take a performance hit. See computeScroll; 7714 // we resume webcore there when the animation is finished. 7715 final int time = mScroller.getDuration(); 7716 7717 // Suppress scrollbars for layer scrolling. 7718 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 7719 awakenScrollBars(time); 7720 } 7721 7722 invalidate(); 7723 } 7724 7725 /** 7726 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 7727 * in charge of installing this view to the view hierarchy. This view will 7728 * become visible when the user starts scrolling via touch and fade away if 7729 * the user does not interact with it. 7730 * <p/> 7731 * API version 3 introduces a built-in zoom mechanism that is shown 7732 * automatically by the MapView. This is the preferred approach for 7733 * showing the zoom UI. 7734 * 7735 * @deprecated The built-in zoom mechanism is preferred, see 7736 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 7737 */ 7738 @Deprecated 7739 public View getZoomControls() { 7740 checkThread(); 7741 if (!getSettings().supportZoom()) { 7742 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7743 return null; 7744 } 7745 return mZoomManager.getExternalZoomPicker(); 7746 } 7747 7748 void dismissZoomControl() { 7749 mZoomManager.dismissZoomPicker(); 7750 } 7751 7752 float getDefaultZoomScale() { 7753 return mZoomManager.getDefaultScale(); 7754 } 7755 7756 /** 7757 * Return the overview scale of the WebView 7758 * @return The overview scale. 7759 */ 7760 float getZoomOverviewScale() { 7761 return mZoomManager.getZoomOverviewScale(); 7762 } 7763 7764 /** 7765 * @return TRUE if the WebView can be zoomed in. 7766 */ 7767 public boolean canZoomIn() { 7768 checkThread(); 7769 return mZoomManager.canZoomIn(); 7770 } 7771 7772 /** 7773 * @return TRUE if the WebView can be zoomed out. 7774 */ 7775 public boolean canZoomOut() { 7776 checkThread(); 7777 return mZoomManager.canZoomOut(); 7778 } 7779 7780 /** 7781 * Perform zoom in in the webview 7782 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7783 */ 7784 public boolean zoomIn() { 7785 checkThread(); 7786 return mZoomManager.zoomIn(); 7787 } 7788 7789 /** 7790 * Perform zoom out in the webview 7791 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7792 */ 7793 public boolean zoomOut() { 7794 checkThread(); 7795 return mZoomManager.zoomOut(); 7796 } 7797 7798 /** 7799 * This selects the best clickable target at mLastTouchX and mLastTouchY 7800 * and calls showCursorTimed on the native side 7801 */ 7802 private void updateSelection() { 7803 if (mNativeClass == 0 || sDisableNavcache) { 7804 return; 7805 } 7806 mPrivateHandler.removeMessages(UPDATE_SELECTION); 7807 // mLastTouchX and mLastTouchY are the point in the current viewport 7808 int contentX = viewToContentX(mLastTouchX + mScrollX); 7809 int contentY = viewToContentY(mLastTouchY + mScrollY); 7810 int slop = viewToContentDimension(mNavSlop); 7811 Rect rect = new Rect(contentX - slop, contentY - slop, 7812 contentX + slop, contentY + slop); 7813 nativeSelectBestAt(rect); 7814 mInitialHitTestResult = hitTestResult(null); 7815 } 7816 7817 /** 7818 * Scroll the focused text field to match the WebTextView 7819 * @param xPercent New x position of the WebTextView from 0 to 1. 7820 */ 7821 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7822 if (!inEditingMode() || mWebViewCore == null) { 7823 return; 7824 } 7825 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7826 new Float(xPercent)); 7827 } 7828 7829 /** 7830 * Scroll the focused textarea vertically to match the WebTextView 7831 * @param y New y position of the WebTextView in view coordinates 7832 */ 7833 /* package */ void scrollFocusedTextInputY(int y) { 7834 if (!inEditingMode() || mWebViewCore == null) { 7835 return; 7836 } 7837 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7838 } 7839 7840 /** 7841 * Set our starting point and time for a drag from the WebTextView. 7842 */ 7843 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7844 if (!inEditingMode()) { 7845 return; 7846 } 7847 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7848 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7849 mLastTouchTime = eventTime; 7850 if (!mScroller.isFinished()) { 7851 abortAnimation(); 7852 } 7853 mSnapScrollMode = SNAP_NONE; 7854 mVelocityTracker = VelocityTracker.obtain(); 7855 mTouchMode = TOUCH_DRAG_START_MODE; 7856 } 7857 7858 /** 7859 * Given a motion event from the WebTextView, set its location to our 7860 * coordinates, and handle the event. 7861 */ 7862 /*package*/ boolean textFieldDrag(MotionEvent event) { 7863 if (!inEditingMode()) { 7864 return false; 7865 } 7866 mDragFromTextInput = true; 7867 event.offsetLocation((mWebTextView.getLeft() - mScrollX), 7868 (mWebTextView.getTop() - mScrollY)); 7869 boolean result = onTouchEvent(event); 7870 mDragFromTextInput = false; 7871 return result; 7872 } 7873 7874 /** 7875 * Due a touch up from a WebTextView. This will be handled by webkit to 7876 * change the selection. 7877 * @param event MotionEvent in the WebTextView's coordinates. 7878 */ 7879 /*package*/ void touchUpOnTextField(MotionEvent event) { 7880 if (!inEditingMode()) { 7881 return; 7882 } 7883 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7884 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7885 int slop = viewToContentDimension(mNavSlop); 7886 nativeMotionUp(x, y, slop); 7887 } 7888 7889 /** 7890 * Called when pressing the center key or trackball on a textfield. 7891 */ 7892 /*package*/ void centerKeyPressOnTextField() { 7893 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7894 nativeCursorNodePointer()); 7895 } 7896 7897 private void doShortPress() { 7898 if (mNativeClass == 0) { 7899 return; 7900 } 7901 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7902 return; 7903 } 7904 mTouchMode = TOUCH_DONE_MODE; 7905 updateSelection(); 7906 switchOutDrawHistory(); 7907 // mLastTouchX and mLastTouchY are the point in the current viewport 7908 int contentX = viewToContentX(mLastTouchX + mScrollX); 7909 int contentY = viewToContentY(mLastTouchY + mScrollY); 7910 int slop = viewToContentDimension(mNavSlop); 7911 if (sDisableNavcache && !mTouchHighlightRegion.isEmpty()) { 7912 // set mTouchHighlightRequested to 0 to cause an immediate 7913 // drawing of the touch rings 7914 mTouchHighlightRequested = 0; 7915 invalidate(mTouchHighlightRegion.getBounds()); 7916 mPrivateHandler.postDelayed(new Runnable() { 7917 @Override 7918 public void run() { 7919 removeTouchHighlight(); 7920 } 7921 }, ViewConfiguration.getPressedStateDuration()); 7922 } 7923 if (sDisableNavcache) { 7924 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7925 // use "0" as generation id to inform WebKit to use the same x/y as 7926 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7927 touchUpData.mMoveGeneration = 0; 7928 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7929 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7930 WebViewCore.MotionUpData motionUpData = new WebViewCore 7931 .MotionUpData(); 7932 motionUpData.mFrame = nativeCacheHitFramePointer(); 7933 motionUpData.mNode = nativeCacheHitNodePointer(); 7934 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7935 motionUpData.mX = contentX; 7936 motionUpData.mY = contentY; 7937 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7938 motionUpData); 7939 } else { 7940 doMotionUp(contentX, contentY); 7941 } 7942 } 7943 7944 private void doMotionUp(int contentX, int contentY) { 7945 int slop = viewToContentDimension(mNavSlop); 7946 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7947 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7948 } 7949 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7950 playSoundEffect(SoundEffectConstants.CLICK); 7951 } 7952 } 7953 7954 void sendPluginDrawMsg() { 7955 mWebViewCore.sendMessage(EventHub.PLUGIN_SURFACE_READY); 7956 } 7957 7958 /** 7959 * Returns plugin bounds if x/y in content coordinates corresponds to a 7960 * plugin. Otherwise a NULL rectangle is returned. 7961 */ 7962 Rect getPluginBounds(int x, int y) { 7963 int slop = viewToContentDimension(mNavSlop); 7964 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7965 return nativeCacheHitNodeBounds(); 7966 } else { 7967 return null; 7968 } 7969 } 7970 7971 /* 7972 * Return true if the rect (e.g. plugin) is fully visible and maximized 7973 * inside the WebView. 7974 */ 7975 boolean isRectFitOnScreen(Rect rect) { 7976 final int rectWidth = rect.width(); 7977 final int rectHeight = rect.height(); 7978 final int viewWidth = getViewWidth(); 7979 final int viewHeight = getViewHeightWithTitle(); 7980 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7981 scale = mZoomManager.computeScaleWithLimits(scale); 7982 return !mZoomManager.willScaleTriggerZoom(scale) 7983 && contentToViewX(rect.left) >= mScrollX 7984 && contentToViewX(rect.right) <= mScrollX + viewWidth 7985 && contentToViewY(rect.top) >= mScrollY 7986 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7987 } 7988 7989 /* 7990 * Maximize and center the rectangle, specified in the document coordinate 7991 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7992 * animated scroll to center it. If the zoom needs to be changed, find the 7993 * zoom center and do a smooth zoom transition. The rect is in document 7994 * coordinates 7995 */ 7996 void centerFitRect(Rect rect) { 7997 final int rectWidth = rect.width(); 7998 final int rectHeight = rect.height(); 7999 final int viewWidth = getViewWidth(); 8000 final int viewHeight = getViewHeightWithTitle(); 8001 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 8002 / rectHeight); 8003 scale = mZoomManager.computeScaleWithLimits(scale); 8004 if (!mZoomManager.willScaleTriggerZoom(scale)) { 8005 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 8006 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 8007 true, 0); 8008 } else { 8009 float actualScale = mZoomManager.getScale(); 8010 float oldScreenX = rect.left * actualScale - mScrollX; 8011 float rectViewX = rect.left * scale; 8012 float rectViewWidth = rectWidth * scale; 8013 float newMaxWidth = mContentWidth * scale; 8014 float newScreenX = (viewWidth - rectViewWidth) / 2; 8015 // pin the newX to the WebView 8016 if (newScreenX > rectViewX) { 8017 newScreenX = rectViewX; 8018 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 8019 newScreenX = viewWidth - (newMaxWidth - rectViewX); 8020 } 8021 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 8022 / (scale - actualScale); 8023 float oldScreenY = rect.top * actualScale + getTitleHeight() 8024 - mScrollY; 8025 float rectViewY = rect.top * scale + getTitleHeight(); 8026 float rectViewHeight = rectHeight * scale; 8027 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 8028 float newScreenY = (viewHeight - rectViewHeight) / 2; 8029 // pin the newY to the WebView 8030 if (newScreenY > rectViewY) { 8031 newScreenY = rectViewY; 8032 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 8033 newScreenY = viewHeight - (newMaxHeight - rectViewY); 8034 } 8035 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 8036 / (scale - actualScale); 8037 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 8038 mZoomManager.startZoomAnimation(scale, false); 8039 } 8040 } 8041 8042 // Called by JNI to handle a touch on a node representing an email address, 8043 // address, or phone number 8044 private void overrideLoading(String url) { 8045 mCallbackProxy.uiOverrideUrlLoading(url); 8046 } 8047 8048 @Override 8049 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 8050 // FIXME: If a subwindow is showing find, and the user touches the 8051 // background window, it can steal focus. 8052 if (mFindIsUp) return false; 8053 boolean result = false; 8054 if (inEditingMode()) { 8055 result = mWebTextView.requestFocus(direction, 8056 previouslyFocusedRect); 8057 } else { 8058 result = super.requestFocus(direction, previouslyFocusedRect); 8059 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 8060 // For cases such as GMail, where we gain focus from a direction, 8061 // we want to move to the first available link. 8062 // FIXME: If there are no visible links, we may not want to 8063 int fakeKeyDirection = 0; 8064 switch(direction) { 8065 case View.FOCUS_UP: 8066 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 8067 break; 8068 case View.FOCUS_DOWN: 8069 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 8070 break; 8071 case View.FOCUS_LEFT: 8072 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 8073 break; 8074 case View.FOCUS_RIGHT: 8075 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 8076 break; 8077 default: 8078 return result; 8079 } 8080 if (mNativeClass != 0 && !nativeHasCursorNode()) { 8081 navHandledKey(fakeKeyDirection, 1, true, 0); 8082 } 8083 } 8084 } 8085 return result; 8086 } 8087 8088 @Override 8089 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 8090 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 8091 8092 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 8093 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 8094 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 8095 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 8096 8097 int measuredHeight = heightSize; 8098 int measuredWidth = widthSize; 8099 8100 // Grab the content size from WebViewCore. 8101 int contentHeight = contentToViewDimension(mContentHeight); 8102 int contentWidth = contentToViewDimension(mContentWidth); 8103 8104// Log.d(LOGTAG, "------- measure " + heightMode); 8105 8106 if (heightMode != MeasureSpec.EXACTLY) { 8107 mHeightCanMeasure = true; 8108 measuredHeight = contentHeight; 8109 if (heightMode == MeasureSpec.AT_MOST) { 8110 // If we are larger than the AT_MOST height, then our height can 8111 // no longer be measured and we should scroll internally. 8112 if (measuredHeight > heightSize) { 8113 measuredHeight = heightSize; 8114 mHeightCanMeasure = false; 8115 measuredHeight |= MEASURED_STATE_TOO_SMALL; 8116 } 8117 } 8118 } else { 8119 mHeightCanMeasure = false; 8120 } 8121 if (mNativeClass != 0) { 8122 nativeSetHeightCanMeasure(mHeightCanMeasure); 8123 } 8124 // For the width, always use the given size unless unspecified. 8125 if (widthMode == MeasureSpec.UNSPECIFIED) { 8126 mWidthCanMeasure = true; 8127 measuredWidth = contentWidth; 8128 } else { 8129 if (measuredWidth < contentWidth) { 8130 measuredWidth |= MEASURED_STATE_TOO_SMALL; 8131 } 8132 mWidthCanMeasure = false; 8133 } 8134 8135 synchronized (this) { 8136 setMeasuredDimension(measuredWidth, measuredHeight); 8137 } 8138 } 8139 8140 @Override 8141 public boolean requestChildRectangleOnScreen(View child, 8142 Rect rect, 8143 boolean immediate) { 8144 if (mNativeClass == 0) { 8145 return false; 8146 } 8147 // don't scroll while in zoom animation. When it is done, we will adjust 8148 // the necessary components (e.g., WebTextView if it is in editing mode) 8149 if (mZoomManager.isFixedLengthAnimationInProgress()) { 8150 return false; 8151 } 8152 8153 rect.offset(child.getLeft() - child.getScrollX(), 8154 child.getTop() - child.getScrollY()); 8155 8156 Rect content = new Rect(viewToContentX(mScrollX), 8157 viewToContentY(mScrollY), 8158 viewToContentX(mScrollX + getWidth() 8159 - getVerticalScrollbarWidth()), 8160 viewToContentY(mScrollY + getViewHeightWithTitle())); 8161 content = nativeSubtractLayers(content); 8162 int screenTop = contentToViewY(content.top); 8163 int screenBottom = contentToViewY(content.bottom); 8164 int height = screenBottom - screenTop; 8165 int scrollYDelta = 0; 8166 8167 if (rect.bottom > screenBottom) { 8168 int oneThirdOfScreenHeight = height / 3; 8169 if (rect.height() > 2 * oneThirdOfScreenHeight) { 8170 // If the rectangle is too tall to fit in the bottom two thirds 8171 // of the screen, place it at the top. 8172 scrollYDelta = rect.top - screenTop; 8173 } else { 8174 // If the rectangle will still fit on screen, we want its 8175 // top to be in the top third of the screen. 8176 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 8177 } 8178 } else if (rect.top < screenTop) { 8179 scrollYDelta = rect.top - screenTop; 8180 } 8181 8182 int screenLeft = contentToViewX(content.left); 8183 int screenRight = contentToViewX(content.right); 8184 int width = screenRight - screenLeft; 8185 int scrollXDelta = 0; 8186 8187 if (rect.right > screenRight && rect.left > screenLeft) { 8188 if (rect.width() > width) { 8189 scrollXDelta += (rect.left - screenLeft); 8190 } else { 8191 scrollXDelta += (rect.right - screenRight); 8192 } 8193 } else if (rect.left < screenLeft) { 8194 scrollXDelta -= (screenLeft - rect.left); 8195 } 8196 8197 if ((scrollYDelta | scrollXDelta) != 0) { 8198 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 8199 } 8200 8201 return false; 8202 } 8203 8204 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 8205 String replace, int newStart, int newEnd) { 8206 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 8207 arg.mReplace = replace; 8208 arg.mNewStart = newStart; 8209 arg.mNewEnd = newEnd; 8210 mTextGeneration++; 8211 arg.mTextGeneration = mTextGeneration; 8212 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 8213 } 8214 8215 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 8216 // check if mWebViewCore has been destroyed 8217 if (mWebViewCore == null) { 8218 return; 8219 } 8220 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 8221 arg.mEvent = event; 8222 arg.mCurrentText = currentText; 8223 // Increase our text generation number, and pass it to webcore thread 8224 mTextGeneration++; 8225 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 8226 // WebKit's document state is not saved until about to leave the page. 8227 // To make sure the host application, like Browser, has the up to date 8228 // document state when it goes to background, we force to save the 8229 // document state. 8230 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 8231 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 8232 cursorData(), 1000); 8233 } 8234 8235 /** 8236 * @hide 8237 */ 8238 public synchronized WebViewCore getWebViewCore() { 8239 return mWebViewCore; 8240 } 8241 8242 /** 8243 * Used only by TouchEventQueue to store pending touch events. 8244 */ 8245 private static class QueuedTouch { 8246 long mSequence; 8247 MotionEvent mEvent; // Optional 8248 TouchEventData mTed; // Optional 8249 8250 QueuedTouch mNext; 8251 8252 public QueuedTouch set(TouchEventData ted) { 8253 mSequence = ted.mSequence; 8254 mTed = ted; 8255 mEvent = null; 8256 mNext = null; 8257 return this; 8258 } 8259 8260 public QueuedTouch set(MotionEvent ev, long sequence) { 8261 mEvent = MotionEvent.obtain(ev); 8262 mSequence = sequence; 8263 mTed = null; 8264 mNext = null; 8265 return this; 8266 } 8267 8268 public QueuedTouch add(QueuedTouch other) { 8269 if (other.mSequence < mSequence) { 8270 other.mNext = this; 8271 return other; 8272 } 8273 8274 QueuedTouch insertAt = this; 8275 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 8276 insertAt = insertAt.mNext; 8277 } 8278 other.mNext = insertAt.mNext; 8279 insertAt.mNext = other; 8280 return this; 8281 } 8282 } 8283 8284 /** 8285 * WebView handles touch events asynchronously since some events must be passed to WebKit 8286 * for potentially slower processing. TouchEventQueue serializes touch events regardless 8287 * of which path they take to ensure that no events are ever processed out of order 8288 * by WebView. 8289 */ 8290 private class TouchEventQueue { 8291 private long mNextTouchSequence = Long.MIN_VALUE + 1; 8292 private long mLastHandledTouchSequence = Long.MIN_VALUE; 8293 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 8294 8295 // Events waiting to be processed. 8296 private QueuedTouch mTouchEventQueue; 8297 8298 // Known events that are waiting on a response before being enqueued. 8299 private QueuedTouch mPreQueue; 8300 8301 // Pool of QueuedTouch objects saved for later use. 8302 private QueuedTouch mQueuedTouchRecycleBin; 8303 private int mQueuedTouchRecycleCount; 8304 8305 private long mLastEventTime = Long.MAX_VALUE; 8306 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 8307 8308 // milliseconds until we abandon hope of getting all of a previous gesture 8309 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 8310 8311 private QueuedTouch obtainQueuedTouch() { 8312 if (mQueuedTouchRecycleBin != null) { 8313 QueuedTouch result = mQueuedTouchRecycleBin; 8314 mQueuedTouchRecycleBin = result.mNext; 8315 mQueuedTouchRecycleCount--; 8316 return result; 8317 } 8318 return new QueuedTouch(); 8319 } 8320 8321 /** 8322 * Allow events with any currently missing sequence numbers to be skipped in processing. 8323 */ 8324 public void ignoreCurrentlyMissingEvents() { 8325 mIgnoreUntilSequence = mNextTouchSequence; 8326 8327 // Run any events we have available and complete, pre-queued or otherwise. 8328 runQueuedAndPreQueuedEvents(); 8329 } 8330 8331 private void runQueuedAndPreQueuedEvents() { 8332 QueuedTouch qd = mPreQueue; 8333 boolean fromPreQueue = true; 8334 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8335 handleQueuedTouch(qd); 8336 QueuedTouch recycleMe = qd; 8337 if (fromPreQueue) { 8338 mPreQueue = qd.mNext; 8339 } else { 8340 mTouchEventQueue = qd.mNext; 8341 } 8342 recycleQueuedTouch(recycleMe); 8343 mLastHandledTouchSequence++; 8344 8345 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 8346 long nextQueued = mTouchEventQueue != null ? 8347 mTouchEventQueue.mSequence : Long.MAX_VALUE; 8348 fromPreQueue = nextPre < nextQueued; 8349 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 8350 } 8351 } 8352 8353 /** 8354 * Add a TouchEventData to the pre-queue. 8355 * 8356 * An event in the pre-queue is an event that we know about that 8357 * has been sent to webkit, but that we haven't received back and 8358 * enqueued into the normal touch queue yet. If webkit ever times 8359 * out and we need to ignore currently missing events, we'll run 8360 * events from the pre-queue to patch the holes. 8361 * 8362 * @param ted TouchEventData to pre-queue 8363 */ 8364 public void preQueueTouchEventData(TouchEventData ted) { 8365 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 8366 if (mPreQueue == null) { 8367 mPreQueue = newTouch; 8368 } else { 8369 QueuedTouch insertionPoint = mPreQueue; 8370 while (insertionPoint.mNext != null && 8371 insertionPoint.mNext.mSequence < newTouch.mSequence) { 8372 insertionPoint = insertionPoint.mNext; 8373 } 8374 newTouch.mNext = insertionPoint.mNext; 8375 insertionPoint.mNext = newTouch; 8376 } 8377 } 8378 8379 private void recycleQueuedTouch(QueuedTouch qd) { 8380 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 8381 qd.mNext = mQueuedTouchRecycleBin; 8382 mQueuedTouchRecycleBin = qd; 8383 mQueuedTouchRecycleCount++; 8384 } 8385 } 8386 8387 /** 8388 * Reset the touch event queue. This will dump any pending events 8389 * and reset the sequence numbering. 8390 */ 8391 public void reset() { 8392 mNextTouchSequence = Long.MIN_VALUE + 1; 8393 mLastHandledTouchSequence = Long.MIN_VALUE; 8394 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 8395 while (mTouchEventQueue != null) { 8396 QueuedTouch recycleMe = mTouchEventQueue; 8397 mTouchEventQueue = mTouchEventQueue.mNext; 8398 recycleQueuedTouch(recycleMe); 8399 } 8400 while (mPreQueue != null) { 8401 QueuedTouch recycleMe = mPreQueue; 8402 mPreQueue = mPreQueue.mNext; 8403 recycleQueuedTouch(recycleMe); 8404 } 8405 } 8406 8407 /** 8408 * Return the next valid sequence number for tagging incoming touch events. 8409 * @return The next touch event sequence number 8410 */ 8411 public long nextTouchSequence() { 8412 return mNextTouchSequence++; 8413 } 8414 8415 /** 8416 * Enqueue a touch event in the form of TouchEventData. 8417 * The sequence number will be read from the mSequence field of the argument. 8418 * 8419 * If the touch event's sequence number is the next in line to be processed, it will 8420 * be handled before this method returns. Any subsequent events that have already 8421 * been queued will also be processed in their proper order. 8422 * 8423 * @param ted Touch data to be processed in order. 8424 * @return true if the event was processed before returning, false if it was just enqueued. 8425 */ 8426 public boolean enqueueTouchEvent(TouchEventData ted) { 8427 // Remove from the pre-queue if present 8428 QueuedTouch preQueue = mPreQueue; 8429 if (preQueue != null) { 8430 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 8431 // if it was present in the pre-queue, and removed from the pre-queue itself. 8432 if (preQueue.mSequence == ted.mSequence) { 8433 mPreQueue = preQueue.mNext; 8434 } else { 8435 QueuedTouch prev = preQueue; 8436 preQueue = null; 8437 while (prev.mNext != null) { 8438 if (prev.mNext.mSequence == ted.mSequence) { 8439 preQueue = prev.mNext; 8440 prev.mNext = preQueue.mNext; 8441 break; 8442 } else { 8443 prev = prev.mNext; 8444 } 8445 } 8446 } 8447 } 8448 8449 if (ted.mSequence < mLastHandledTouchSequence) { 8450 // Stale event and we already moved on; drop it. (Should not be common.) 8451 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 8452 " received from webcore; ignoring"); 8453 return false; 8454 } 8455 8456 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 8457 return false; 8458 } 8459 8460 // dropStaleGestures above might have fast-forwarded us to 8461 // an event we have already. 8462 runNextQueuedEvents(); 8463 8464 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 8465 if (preQueue != null) { 8466 recycleQueuedTouch(preQueue); 8467 preQueue = null; 8468 } 8469 handleQueuedTouchEventData(ted); 8470 8471 mLastHandledTouchSequence++; 8472 8473 // Do we have any more? Run them if so. 8474 runNextQueuedEvents(); 8475 } else { 8476 // Reuse the pre-queued object if we had it. 8477 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 8478 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8479 } 8480 return true; 8481 } 8482 8483 /** 8484 * Enqueue a touch event in the form of a MotionEvent from the framework. 8485 * 8486 * If the touch event's sequence number is the next in line to be processed, it will 8487 * be handled before this method returns. Any subsequent events that have already 8488 * been queued will also be processed in their proper order. 8489 * 8490 * @param ev MotionEvent to be processed in order 8491 */ 8492 public void enqueueTouchEvent(MotionEvent ev) { 8493 final long sequence = nextTouchSequence(); 8494 8495 if (dropStaleGestures(ev, sequence)) { 8496 return; 8497 } 8498 8499 // dropStaleGestures above might have fast-forwarded us to 8500 // an event we have already. 8501 runNextQueuedEvents(); 8502 8503 if (mLastHandledTouchSequence + 1 == sequence) { 8504 handleQueuedMotionEvent(ev); 8505 8506 mLastHandledTouchSequence++; 8507 8508 // Do we have any more? Run them if so. 8509 runNextQueuedEvents(); 8510 } else { 8511 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 8512 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8513 } 8514 } 8515 8516 private void runNextQueuedEvents() { 8517 QueuedTouch qd = mTouchEventQueue; 8518 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8519 handleQueuedTouch(qd); 8520 QueuedTouch recycleMe = qd; 8521 qd = qd.mNext; 8522 recycleQueuedTouch(recycleMe); 8523 mLastHandledTouchSequence++; 8524 } 8525 mTouchEventQueue = qd; 8526 } 8527 8528 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 8529 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 8530 // This is to make sure that we don't attempt to process a tap 8531 // or long press when webkit takes too long to get back to us. 8532 // The movement will be properly confirmed when we process the 8533 // enqueued event later. 8534 final int dx = Math.round(ev.getX()) - mLastTouchX; 8535 final int dy = Math.round(ev.getY()) - mLastTouchY; 8536 if (dx * dx + dy * dy > mTouchSlopSquare) { 8537 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 8538 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 8539 } 8540 } 8541 8542 if (mTouchEventQueue == null) { 8543 return sequence <= mLastHandledTouchSequence; 8544 } 8545 8546 // If we have a new down event and it's been a while since the last event 8547 // we saw, catch up as best we can and keep going. 8548 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 8549 long eventTime = ev.getEventTime(); 8550 long lastHandledEventTime = mLastEventTime; 8551 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 8552 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 8553 "Catching up."); 8554 runQueuedAndPreQueuedEvents(); 8555 8556 // Drop leftovers that we truly don't have. 8557 QueuedTouch qd = mTouchEventQueue; 8558 while (qd != null && qd.mSequence < sequence) { 8559 QueuedTouch recycleMe = qd; 8560 qd = qd.mNext; 8561 recycleQueuedTouch(recycleMe); 8562 } 8563 mTouchEventQueue = qd; 8564 mLastHandledTouchSequence = sequence - 1; 8565 } 8566 } 8567 8568 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 8569 QueuedTouch qd = mTouchEventQueue; 8570 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8571 QueuedTouch recycleMe = qd; 8572 qd = qd.mNext; 8573 recycleQueuedTouch(recycleMe); 8574 } 8575 mTouchEventQueue = qd; 8576 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 8577 } 8578 8579 if (mPreQueue != null) { 8580 // Drop stale prequeued events 8581 QueuedTouch qd = mPreQueue; 8582 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8583 QueuedTouch recycleMe = qd; 8584 qd = qd.mNext; 8585 recycleQueuedTouch(recycleMe); 8586 } 8587 mPreQueue = qd; 8588 } 8589 8590 return sequence <= mLastHandledTouchSequence; 8591 } 8592 8593 private void handleQueuedTouch(QueuedTouch qt) { 8594 if (qt.mTed != null) { 8595 handleQueuedTouchEventData(qt.mTed); 8596 } else { 8597 handleQueuedMotionEvent(qt.mEvent); 8598 qt.mEvent.recycle(); 8599 } 8600 } 8601 8602 private void handleQueuedMotionEvent(MotionEvent ev) { 8603 mLastEventTime = ev.getEventTime(); 8604 int action = ev.getActionMasked(); 8605 if (ev.getPointerCount() > 1) { // Multi-touch 8606 handleMultiTouchInWebView(ev); 8607 } else { 8608 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 8609 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 8610 // ScaleGestureDetector needs a consistent event stream to operate properly. 8611 // It won't take any action with fewer than two pointers, but it needs to 8612 // update internal bookkeeping state. 8613 detector.onTouchEvent(ev); 8614 } 8615 8616 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 8617 } 8618 } 8619 8620 private void handleQueuedTouchEventData(TouchEventData ted) { 8621 if (ted.mMotionEvent != null) { 8622 mLastEventTime = ted.mMotionEvent.getEventTime(); 8623 } 8624 if (!ted.mReprocess) { 8625 if (ted.mAction == MotionEvent.ACTION_DOWN 8626 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 8627 // if prevent default is called from WebCore, UI 8628 // will not handle the rest of the touch events any 8629 // more. 8630 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8631 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 8632 } else if (ted.mAction == MotionEvent.ACTION_MOVE 8633 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 8634 // the return for the first ACTION_MOVE will decide 8635 // whether UI will handle touch or not. Currently no 8636 // support for alternating prevent default 8637 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8638 : PREVENT_DEFAULT_NO; 8639 } 8640 if (mPreventDefault == PREVENT_DEFAULT_YES) { 8641 mTouchHighlightRegion.setEmpty(); 8642 } 8643 } else { 8644 if (ted.mPoints.length > 1) { // multi-touch 8645 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 8646 mPreventDefault = PREVENT_DEFAULT_NO; 8647 handleMultiTouchInWebView(ted.mMotionEvent); 8648 } else { 8649 mPreventDefault = PREVENT_DEFAULT_YES; 8650 } 8651 return; 8652 } 8653 8654 // prevent default is not called in WebCore, so the 8655 // message needs to be reprocessed in UI 8656 if (!ted.mNativeResult) { 8657 // Following is for single touch. 8658 switch (ted.mAction) { 8659 case MotionEvent.ACTION_DOWN: 8660 mLastDeferTouchX = ted.mPointsInView[0].x; 8661 mLastDeferTouchY = ted.mPointsInView[0].y; 8662 mDeferTouchMode = TOUCH_INIT_MODE; 8663 break; 8664 case MotionEvent.ACTION_MOVE: { 8665 // no snapping in defer process 8666 int x = ted.mPointsInView[0].x; 8667 int y = ted.mPointsInView[0].y; 8668 8669 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 8670 mDeferTouchMode = TOUCH_DRAG_MODE; 8671 mLastDeferTouchX = x; 8672 mLastDeferTouchY = y; 8673 startScrollingLayer(x, y); 8674 startDrag(); 8675 } 8676 int deltaX = pinLocX((int) (mScrollX 8677 + mLastDeferTouchX - x)) 8678 - mScrollX; 8679 int deltaY = pinLocY((int) (mScrollY 8680 + mLastDeferTouchY - y)) 8681 - mScrollY; 8682 doDrag(deltaX, deltaY); 8683 if (deltaX != 0) mLastDeferTouchX = x; 8684 if (deltaY != 0) mLastDeferTouchY = y; 8685 break; 8686 } 8687 case MotionEvent.ACTION_UP: 8688 case MotionEvent.ACTION_CANCEL: 8689 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 8690 // no fling in defer process 8691 mScroller.springBack(mScrollX, mScrollY, 0, 8692 computeMaxScrollX(), 0, 8693 computeMaxScrollY()); 8694 invalidate(); 8695 WebViewCore.resumePriority(); 8696 WebViewCore.resumeUpdatePicture(mWebViewCore); 8697 } 8698 mDeferTouchMode = TOUCH_DONE_MODE; 8699 break; 8700 case WebViewCore.ACTION_DOUBLETAP: 8701 // doDoubleTap() needs mLastTouchX/Y as anchor 8702 mLastDeferTouchX = ted.mPointsInView[0].x; 8703 mLastDeferTouchY = ted.mPointsInView[0].y; 8704 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 8705 mDeferTouchMode = TOUCH_DONE_MODE; 8706 break; 8707 case WebViewCore.ACTION_LONGPRESS: 8708 HitTestResult hitTest = getHitTestResult(); 8709 if (hitTest != null && hitTest.mType 8710 != HitTestResult.UNKNOWN_TYPE) { 8711 performLongClick(); 8712 } 8713 mDeferTouchMode = TOUCH_DONE_MODE; 8714 break; 8715 } 8716 } 8717 } 8718 } 8719 } 8720 8721 //------------------------------------------------------------------------- 8722 // Methods can be called from a separate thread, like WebViewCore 8723 // If it needs to call the View system, it has to send message. 8724 //------------------------------------------------------------------------- 8725 8726 /** 8727 * General handler to receive message coming from webkit thread 8728 */ 8729 class PrivateHandler extends Handler { 8730 @Override 8731 public void handleMessage(Message msg) { 8732 // exclude INVAL_RECT_MSG_ID since it is frequently output 8733 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 8734 if (msg.what >= FIRST_PRIVATE_MSG_ID 8735 && msg.what <= LAST_PRIVATE_MSG_ID) { 8736 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 8737 - FIRST_PRIVATE_MSG_ID]); 8738 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 8739 && msg.what <= LAST_PACKAGE_MSG_ID) { 8740 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 8741 - FIRST_PACKAGE_MSG_ID]); 8742 } else { 8743 Log.v(LOGTAG, Integer.toString(msg.what)); 8744 } 8745 } 8746 if (mWebViewCore == null) { 8747 // after WebView's destroy() is called, skip handling messages. 8748 return; 8749 } 8750 if (mBlockWebkitViewMessages 8751 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 8752 // Blocking messages from webkit 8753 return; 8754 } 8755 switch (msg.what) { 8756 case REMEMBER_PASSWORD: { 8757 mDatabase.setUsernamePassword( 8758 msg.getData().getString("host"), 8759 msg.getData().getString("username"), 8760 msg.getData().getString("password")); 8761 ((Message) msg.obj).sendToTarget(); 8762 break; 8763 } 8764 case NEVER_REMEMBER_PASSWORD: { 8765 mDatabase.setUsernamePassword( 8766 msg.getData().getString("host"), null, null); 8767 ((Message) msg.obj).sendToTarget(); 8768 break; 8769 } 8770 case PREVENT_DEFAULT_TIMEOUT: { 8771 // if timeout happens, cancel it so that it won't block UI 8772 // to continue handling touch events 8773 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8774 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8775 || (msg.arg1 == MotionEvent.ACTION_MOVE 8776 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8777 cancelWebCoreTouchEvent( 8778 viewToContentX(mLastTouchX + mScrollX), 8779 viewToContentY(mLastTouchY + mScrollY), 8780 true); 8781 } 8782 break; 8783 } 8784 case SCROLL_SELECT_TEXT: { 8785 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8786 mSentAutoScrollMessage = false; 8787 break; 8788 } 8789 if (mCurrentScrollingLayerId == 0) { 8790 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8791 } else { 8792 scrollLayerTo(mScrollingLayerRect.left + mAutoScrollX, 8793 mScrollingLayerRect.top + mAutoScrollY); 8794 } 8795 sendEmptyMessageDelayed( 8796 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8797 break; 8798 } 8799 case UPDATE_SELECTION: { 8800 if (mTouchMode == TOUCH_INIT_MODE 8801 || mTouchMode == TOUCH_SHORTPRESS_MODE 8802 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 8803 updateSelection(); 8804 } 8805 break; 8806 } 8807 case SWITCH_TO_SHORTPRESS: { 8808 if (mTouchMode == TOUCH_INIT_MODE) { 8809 if (!sDisableNavcache 8810 && mPreventDefault != PREVENT_DEFAULT_YES) { 8811 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8812 updateSelection(); 8813 } else { 8814 // set to TOUCH_SHORTPRESS_MODE so that it won't 8815 // trigger double tap any more 8816 mTouchMode = TOUCH_SHORTPRESS_MODE; 8817 } 8818 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8819 mTouchMode = TOUCH_DONE_MODE; 8820 } 8821 break; 8822 } 8823 case SWITCH_TO_LONGPRESS: { 8824 if (sDisableNavcache) { 8825 removeTouchHighlight(); 8826 } 8827 if (inFullScreenMode() || mDeferTouchProcess) { 8828 TouchEventData ted = new TouchEventData(); 8829 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8830 ted.mIds = new int[1]; 8831 ted.mIds[0] = 0; 8832 ted.mPoints = new Point[1]; 8833 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8834 viewToContentY(mLastTouchY + mScrollY)); 8835 ted.mPointsInView = new Point[1]; 8836 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8837 // metaState for long press is tricky. Should it be the 8838 // state when the press started or when the press was 8839 // released? Or some intermediary key state? For 8840 // simplicity for now, we don't set it. 8841 ted.mMetaState = 0; 8842 ted.mReprocess = mDeferTouchProcess; 8843 ted.mNativeLayer = nativeScrollableLayer( 8844 ted.mPoints[0].x, ted.mPoints[0].y, 8845 ted.mNativeLayerRect, null); 8846 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8847 mTouchEventQueue.preQueueTouchEventData(ted); 8848 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8849 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8850 mTouchMode = TOUCH_DONE_MODE; 8851 performLongClick(); 8852 } 8853 break; 8854 } 8855 case RELEASE_SINGLE_TAP: { 8856 doShortPress(); 8857 break; 8858 } 8859 case SCROLL_TO_MSG_ID: { 8860 // arg1 = animate, arg2 = onlyIfImeIsShowing 8861 // obj = Point(x, y) 8862 if (msg.arg2 == 1) { 8863 // This scroll is intended to bring the textfield into 8864 // view, but is only necessary if the IME is showing 8865 InputMethodManager imm = InputMethodManager.peekInstance(); 8866 if (imm == null || !imm.isAcceptingText() 8867 || (!imm.isActive(WebView.this) && (!inEditingMode() 8868 || !imm.isActive(mWebTextView)))) { 8869 break; 8870 } 8871 } 8872 final Point p = (Point) msg.obj; 8873 if (msg.arg1 == 1) { 8874 spawnContentScrollTo(p.x, p.y); 8875 } else { 8876 setContentScrollTo(p.x, p.y); 8877 } 8878 break; 8879 } 8880 case UPDATE_ZOOM_RANGE: { 8881 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8882 // mScrollX contains the new minPrefWidth 8883 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8884 break; 8885 } 8886 case UPDATE_ZOOM_DENSITY: { 8887 final float density = (Float) msg.obj; 8888 mZoomManager.updateDefaultZoomDensity(density); 8889 break; 8890 } 8891 case REPLACE_BASE_CONTENT: { 8892 nativeReplaceBaseContent(msg.arg1); 8893 break; 8894 } 8895 case NEW_PICTURE_MSG_ID: { 8896 // called for new content 8897 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8898 setNewPicture(draw, true); 8899 break; 8900 } 8901 case WEBCORE_INITIALIZED_MSG_ID: 8902 // nativeCreate sets mNativeClass to a non-zero value 8903 String drawableDir = BrowserFrame.getRawResFilename( 8904 BrowserFrame.DRAWABLEDIR, mContext); 8905 WindowManager windowManager = 8906 (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE); 8907 Display display = windowManager.getDefaultDisplay(); 8908 nativeCreate(msg.arg1, drawableDir, 8909 ActivityManager.isHighEndGfx(display)); 8910 if (mDelaySetPicture != null) { 8911 setNewPicture(mDelaySetPicture, true); 8912 mDelaySetPicture = null; 8913 } 8914 if (mIsPaused) { 8915 nativeSetPauseDrawing(mNativeClass, true); 8916 } 8917 break; 8918 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8919 // Make sure that the textfield is currently focused 8920 // and representing the same node as the pointer. 8921 if (msg.arg2 == mTextGeneration) { 8922 String text = (String) msg.obj; 8923 if (null == text) { 8924 text = ""; 8925 } 8926 if (inEditingMode() && 8927 mWebTextView.isSameTextField(msg.arg1)) { 8928 mWebTextView.setTextAndKeepSelection(text); 8929 } else if (mInputConnection != null && 8930 mFieldPointer == msg.arg1) { 8931 mInputConnection.setTextAndKeepSelection(text); 8932 } 8933 } 8934 break; 8935 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8936 displaySoftKeyboard(true); 8937 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8938 case UPDATE_TEXT_SELECTION_MSG_ID: 8939 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8940 (WebViewCore.TextSelectionData) msg.obj); 8941 break; 8942 case FORM_DID_BLUR: 8943 if (inEditingMode() 8944 && mWebTextView.isSameTextField(msg.arg1)) { 8945 hideSoftKeyboard(); 8946 } 8947 break; 8948 case RETURN_LABEL: 8949 if (inEditingMode() 8950 && mWebTextView.isSameTextField(msg.arg1)) { 8951 mWebTextView.setHint((String) msg.obj); 8952 InputMethodManager imm 8953 = InputMethodManager.peekInstance(); 8954 // The hint is propagated to the IME in 8955 // onCreateInputConnection. If the IME is already 8956 // active, restart it so that its hint text is updated. 8957 if (imm != null && imm.isActive(mWebTextView)) { 8958 imm.restartInput(mWebTextView); 8959 } 8960 } 8961 break; 8962 case UNHANDLED_NAV_KEY: 8963 navHandledKey(msg.arg1, 1, false, 0); 8964 break; 8965 case UPDATE_TEXT_ENTRY_MSG_ID: 8966 // this is sent after finishing resize in WebViewCore. Make 8967 // sure the text edit box is still on the screen. 8968 if (inEditingMode() && nativeCursorIsTextInput()) { 8969 updateWebTextViewPosition(); 8970 } 8971 break; 8972 case CLEAR_TEXT_ENTRY: 8973 clearTextEntry(); 8974 break; 8975 case INVAL_RECT_MSG_ID: { 8976 Rect r = (Rect)msg.obj; 8977 if (r == null) { 8978 invalidate(); 8979 } else { 8980 // we need to scale r from content into view coords, 8981 // which viewInvalidate() does for us 8982 viewInvalidate(r.left, r.top, r.right, r.bottom); 8983 } 8984 break; 8985 } 8986 case REQUEST_FORM_DATA: 8987 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8988 if (mWebTextView.isSameTextField(msg.arg1)) { 8989 mWebTextView.setAdapterCustom(adapter); 8990 } 8991 break; 8992 8993 case LONG_PRESS_CENTER: 8994 // as this is shared by keydown and trackballdown, reset all 8995 // the states 8996 mGotCenterDown = false; 8997 mTrackballDown = false; 8998 performLongClick(); 8999 break; 9000 9001 case WEBCORE_NEED_TOUCH_EVENTS: 9002 mForwardTouchEvents = (msg.arg1 != 0); 9003 break; 9004 9005 case PREVENT_TOUCH_ID: 9006 if (inFullScreenMode()) { 9007 break; 9008 } 9009 TouchEventData ted = (TouchEventData) msg.obj; 9010 9011 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 9012 // WebCore is responding to us; remove pending timeout. 9013 // It will be re-posted when needed. 9014 removeMessages(PREVENT_DEFAULT_TIMEOUT); 9015 } 9016 break; 9017 9018 case REQUEST_KEYBOARD: 9019 if (msg.arg1 == 0) { 9020 hideSoftKeyboard(); 9021 } else { 9022 displaySoftKeyboard(false); 9023 } 9024 break; 9025 9026 case DRAG_HELD_MOTIONLESS: 9027 mHeldMotionless = MOTIONLESS_TRUE; 9028 invalidate(); 9029 // fall through to keep scrollbars awake 9030 9031 case AWAKEN_SCROLL_BARS: 9032 if (mTouchMode == TOUCH_DRAG_MODE 9033 && mHeldMotionless == MOTIONLESS_TRUE) { 9034 awakenScrollBars(ViewConfiguration 9035 .getScrollDefaultDelay(), false); 9036 mPrivateHandler.sendMessageDelayed(mPrivateHandler 9037 .obtainMessage(AWAKEN_SCROLL_BARS), 9038 ViewConfiguration.getScrollDefaultDelay()); 9039 } 9040 break; 9041 9042 case DO_MOTION_UP: 9043 doMotionUp(msg.arg1, msg.arg2); 9044 break; 9045 9046 case SCREEN_ON: 9047 setKeepScreenOn(msg.arg1 == 1); 9048 break; 9049 9050 case ENTER_FULLSCREEN_VIDEO: 9051 int layerId = msg.arg1; 9052 9053 String url = (String) msg.obj; 9054 if (mHTML5VideoViewProxy != null) { 9055 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 9056 } 9057 break; 9058 9059 case EXIT_FULLSCREEN_VIDEO: 9060 if (mHTML5VideoViewProxy != null) { 9061 mHTML5VideoViewProxy.exitFullScreenVideo(); 9062 } 9063 break; 9064 9065 case SHOW_FULLSCREEN: { 9066 View view = (View) msg.obj; 9067 int orientation = msg.arg1; 9068 int npp = msg.arg2; 9069 9070 if (inFullScreenMode()) { 9071 Log.w(LOGTAG, "Should not have another full screen."); 9072 dismissFullScreenMode(); 9073 } 9074 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 9075 mFullScreenHolder.setContentView(view); 9076 mFullScreenHolder.show(); 9077 invalidate(); 9078 9079 break; 9080 } 9081 case HIDE_FULLSCREEN: 9082 dismissFullScreenMode(); 9083 break; 9084 9085 case DOM_FOCUS_CHANGED: 9086 if (inEditingMode()) { 9087 nativeClearCursor(); 9088 rebuildWebTextView(); 9089 } 9090 break; 9091 9092 case SHOW_RECT_MSG_ID: { 9093 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 9094 int x = mScrollX; 9095 int left = contentToViewX(data.mLeft); 9096 int width = contentToViewDimension(data.mWidth); 9097 int maxWidth = contentToViewDimension(data.mContentWidth); 9098 int viewWidth = getViewWidth(); 9099 if (width < viewWidth) { 9100 // center align 9101 x += left + width / 2 - mScrollX - viewWidth / 2; 9102 } else { 9103 x += (int) (left + data.mXPercentInDoc * width 9104 - mScrollX - data.mXPercentInView * viewWidth); 9105 } 9106 if (DebugFlags.WEB_VIEW) { 9107 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 9108 width + ",maxWidth=" + maxWidth + 9109 ",viewWidth=" + viewWidth + ",x=" 9110 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 9111 ",xPercentInView=" + data.mXPercentInView+ ")"); 9112 } 9113 // use the passing content width to cap x as the current 9114 // mContentWidth may not be updated yet 9115 x = Math.max(0, 9116 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 9117 int top = contentToViewY(data.mTop); 9118 int height = contentToViewDimension(data.mHeight); 9119 int maxHeight = contentToViewDimension(data.mContentHeight); 9120 int viewHeight = getViewHeight(); 9121 int y = (int) (top + data.mYPercentInDoc * height - 9122 data.mYPercentInView * viewHeight); 9123 if (DebugFlags.WEB_VIEW) { 9124 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 9125 height + ",maxHeight=" + maxHeight + 9126 ",viewHeight=" + viewHeight + ",y=" 9127 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 9128 ",yPercentInView=" + data.mYPercentInView+ ")"); 9129 } 9130 // use the passing content height to cap y as the current 9131 // mContentHeight may not be updated yet 9132 y = Math.max(0, 9133 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 9134 // We need to take into account the visible title height 9135 // when scrolling since y is an absolute view position. 9136 y = Math.max(0, y - getVisibleTitleHeightImpl()); 9137 scrollTo(x, y); 9138 } 9139 break; 9140 9141 case CENTER_FIT_RECT: 9142 centerFitRect((Rect)msg.obj); 9143 break; 9144 9145 case SET_SCROLLBAR_MODES: 9146 mHorizontalScrollBarMode = msg.arg1; 9147 mVerticalScrollBarMode = msg.arg2; 9148 break; 9149 9150 case SELECTION_STRING_CHANGED: 9151 if (mAccessibilityInjector != null) { 9152 String selectionString = (String) msg.obj; 9153 mAccessibilityInjector.onSelectionStringChange(selectionString); 9154 } 9155 break; 9156 9157 case HIT_TEST_RESULT: 9158 WebKitHitTest hit = (WebKitHitTest) msg.obj; 9159 mFocusedNode = hit; 9160 setTouchHighlightRects(hit); 9161 if (hit == null) { 9162 mInitialHitTestResult = null; 9163 } else { 9164 mInitialHitTestResult = new HitTestResult(); 9165 if (hit.mLinkUrl != null) { 9166 mInitialHitTestResult.mType = HitTestResult.SRC_ANCHOR_TYPE; 9167 mInitialHitTestResult.mExtra = hit.mLinkUrl; 9168 if (hit.mImageUrl != null) { 9169 mInitialHitTestResult.mType = HitTestResult.SRC_IMAGE_ANCHOR_TYPE; 9170 mInitialHitTestResult.mExtra = hit.mImageUrl; 9171 } 9172 } else if (hit.mImageUrl != null) { 9173 mInitialHitTestResult.mType = HitTestResult.IMAGE_TYPE; 9174 mInitialHitTestResult.mExtra = hit.mImageUrl; 9175 } else if (hit.mEditable) { 9176 mInitialHitTestResult.mType = HitTestResult.EDIT_TEXT_TYPE; 9177 } 9178 } 9179 break; 9180 9181 case SAVE_WEBARCHIVE_FINISHED: 9182 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 9183 if (saveMessage.mCallback != null) { 9184 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 9185 } 9186 break; 9187 9188 case SET_AUTOFILLABLE: 9189 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 9190 if (mWebTextView != null) { 9191 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 9192 rebuildWebTextView(); 9193 } 9194 break; 9195 9196 case AUTOFILL_COMPLETE: 9197 if (mWebTextView != null) { 9198 // Clear the WebTextView adapter when AutoFill finishes 9199 // so that the drop down gets cleared. 9200 mWebTextView.setAdapterCustom(null); 9201 } 9202 break; 9203 9204 case SELECT_AT: 9205 nativeSelectAt(msg.arg1, msg.arg2); 9206 break; 9207 9208 case COPY_TO_CLIPBOARD: 9209 copyToClipboard((String) msg.obj); 9210 break; 9211 9212 case INIT_EDIT_FIELD: 9213 if (mInputConnection != null) { 9214 TextFieldInitData initData = (TextFieldInitData) msg.obj; 9215 mTextGeneration = 0; 9216 mFieldPointer = initData.mFieldPointer; 9217 mInputConnection.initEditorInfo(initData); 9218 mInputConnection.setTextAndKeepSelection(initData.mText); 9219 } 9220 break; 9221 9222 case REPLACE_TEXT:{ 9223 String text = (String)msg.obj; 9224 int start = msg.arg1; 9225 int end = msg.arg2; 9226 int cursorPosition = start + text.length(); 9227 replaceTextfieldText(start, end, text, 9228 cursorPosition, cursorPosition); 9229 break; 9230 } 9231 9232 case UPDATE_MATCH_COUNT: { 9233 if (mFindCallback != null) { 9234 mFindCallback.updateMatchCount(msg.arg1, msg.arg2, 9235 (String) msg.obj); 9236 } 9237 break; 9238 } 9239 case CLEAR_CARET_HANDLE: 9240 selectionDone(); 9241 break; 9242 9243 case KEY_PRESS: 9244 mWebViewCore.sendMessage(EventHub.KEY_PRESS, msg.arg1); 9245 break; 9246 9247 default: 9248 super.handleMessage(msg); 9249 break; 9250 } 9251 } 9252 } 9253 9254 private boolean shouldDrawHighlightRect() { 9255 if (mFocusedNode == null || mInitialHitTestResult == null) { 9256 return false; 9257 } 9258 if (mTouchHighlightRegion.isEmpty()) { 9259 return false; 9260 } 9261 if (mFocusedNode.mHasFocus && !isInTouchMode()) { 9262 return !mFocusedNode.mEditable; 9263 } 9264 if (mInitialHitTestResult.mType == HitTestResult.UNKNOWN_TYPE) { 9265 return false; 9266 } 9267 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 9268 if (delay < ViewConfiguration.getTapTimeout()) { 9269 Rect r = mTouchHighlightRegion.getBounds(); 9270 postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 9271 return false; 9272 } 9273 return true; 9274 } 9275 9276 9277 private FocusTransitionDrawable mFocusTransition = null; 9278 static class FocusTransitionDrawable extends Drawable { 9279 Region mPreviousRegion; 9280 Region mNewRegion; 9281 float mProgress = 0; 9282 WebView mWebView; 9283 Paint mPaint; 9284 int mMaxAlpha; 9285 Point mTranslate; 9286 9287 public FocusTransitionDrawable(WebView view) { 9288 mWebView = view; 9289 mPaint = new Paint(mWebView.mTouchHightlightPaint); 9290 mMaxAlpha = mPaint.getAlpha(); 9291 } 9292 9293 @Override 9294 public void setColorFilter(ColorFilter cf) { 9295 } 9296 9297 @Override 9298 public void setAlpha(int alpha) { 9299 } 9300 9301 @Override 9302 public int getOpacity() { 9303 return 0; 9304 } 9305 9306 public void setProgress(float p) { 9307 mProgress = p; 9308 if (mWebView.mFocusTransition == this) { 9309 if (mProgress == 1f) 9310 mWebView.mFocusTransition = null; 9311 mWebView.invalidate(); 9312 } 9313 } 9314 9315 public float getProgress() { 9316 return mProgress; 9317 } 9318 9319 @Override 9320 public void draw(Canvas canvas) { 9321 if (mTranslate == null) { 9322 Rect bounds = mPreviousRegion.getBounds(); 9323 Point from = new Point(bounds.centerX(), bounds.centerY()); 9324 mNewRegion.getBounds(bounds); 9325 Point to = new Point(bounds.centerX(), bounds.centerY()); 9326 mTranslate = new Point(from.x - to.x, from.y - to.y); 9327 } 9328 int alpha = (int) (mProgress * mMaxAlpha); 9329 RegionIterator iter = new RegionIterator(mPreviousRegion); 9330 Rect r = new Rect(); 9331 mPaint.setAlpha(mMaxAlpha - alpha); 9332 float tx = mTranslate.x * mProgress; 9333 float ty = mTranslate.y * mProgress; 9334 int save = canvas.save(Canvas.MATRIX_SAVE_FLAG); 9335 canvas.translate(-tx, -ty); 9336 while (iter.next(r)) { 9337 canvas.drawRect(r, mPaint); 9338 } 9339 canvas.restoreToCount(save); 9340 iter = new RegionIterator(mNewRegion); 9341 r = new Rect(); 9342 mPaint.setAlpha(alpha); 9343 save = canvas.save(Canvas.MATRIX_SAVE_FLAG); 9344 tx = mTranslate.x - tx; 9345 ty = mTranslate.y - ty; 9346 canvas.translate(tx, ty); 9347 while (iter.next(r)) { 9348 canvas.drawRect(r, mPaint); 9349 } 9350 canvas.restoreToCount(save); 9351 } 9352 }; 9353 9354 private boolean shouldAnimateTo(WebKitHitTest hit) { 9355 // TODO: Don't be annoying or throw out the animation entirely 9356 return false; 9357 } 9358 9359 private void setTouchHighlightRects(WebKitHitTest hit) { 9360 FocusTransitionDrawable transition = null; 9361 if (shouldAnimateTo(hit)) { 9362 transition = new FocusTransitionDrawable(this); 9363 } 9364 Rect[] rects = hit != null ? hit.mTouchRects : null; 9365 if (!mTouchHighlightRegion.isEmpty()) { 9366 invalidate(mTouchHighlightRegion.getBounds()); 9367 if (transition != null) { 9368 transition.mPreviousRegion = new Region(mTouchHighlightRegion); 9369 } 9370 mTouchHighlightRegion.setEmpty(); 9371 } 9372 if (rects != null) { 9373 mTouchHightlightPaint.setColor(hit.mTapHighlightColor); 9374 for (Rect rect : rects) { 9375 Rect viewRect = contentToViewRect(rect); 9376 // some sites, like stories in nytimes.com, set 9377 // mouse event handler in the top div. It is not 9378 // user friendly to highlight the div if it covers 9379 // more than half of the screen. 9380 if (viewRect.width() < getWidth() >> 1 9381 || viewRect.height() < getHeight() >> 1) { 9382 mTouchHighlightRegion.union(viewRect); 9383 } else { 9384 Log.w(LOGTAG, "Skip the huge selection rect:" 9385 + viewRect); 9386 } 9387 } 9388 invalidate(mTouchHighlightRegion.getBounds()); 9389 if (transition != null && transition.mPreviousRegion != null) { 9390 transition.mNewRegion = new Region(mTouchHighlightRegion); 9391 mFocusTransition = transition; 9392 ObjectAnimator animator = ObjectAnimator.ofFloat( 9393 mFocusTransition, "progress", 1f); 9394 animator.start(); 9395 } 9396 } 9397 } 9398 9399 /** @hide Called by JNI when pages are swapped (only occurs with hardware 9400 * acceleration) */ 9401 protected void pageSwapCallback(boolean notifyAnimationStarted) { 9402 mWebViewCore.resumeWebKitDraw(); 9403 if (inEditingMode()) { 9404 didUpdateWebTextViewDimensions(ANYWHERE); 9405 } 9406 if (notifyAnimationStarted) { 9407 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 9408 } 9409 } 9410 9411 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 9412 if (mNativeClass == 0) { 9413 if (mDelaySetPicture != null) { 9414 throw new IllegalStateException("Tried to setNewPicture with" 9415 + " a delay picture already set! (memory leak)"); 9416 } 9417 // Not initialized yet, delay set 9418 mDelaySetPicture = draw; 9419 return; 9420 } 9421 WebViewCore.ViewState viewState = draw.mViewState; 9422 boolean isPictureAfterFirstLayout = viewState != null; 9423 9424 if (updateBaseLayer) { 9425 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 9426 getSettings().getShowVisualIndicator(), 9427 isPictureAfterFirstLayout); 9428 } 9429 final Point viewSize = draw.mViewSize; 9430 // We update the layout (i.e. request a layout from the 9431 // view system) if the last view size that we sent to 9432 // WebCore matches the view size of the picture we just 9433 // received in the fixed dimension. 9434 final boolean updateLayout = viewSize.x == mLastWidthSent 9435 && viewSize.y == mLastHeightSent; 9436 // Don't send scroll event for picture coming from webkit, 9437 // since the new picture may cause a scroll event to override 9438 // the saved history scroll position. 9439 mSendScrollEvent = false; 9440 recordNewContentSize(draw.mContentSize.x, 9441 draw.mContentSize.y, updateLayout); 9442 if (isPictureAfterFirstLayout) { 9443 // Reset the last sent data here since dealing with new page. 9444 mLastWidthSent = 0; 9445 mZoomManager.onFirstLayout(draw); 9446 int scrollX = viewState.mShouldStartScrolledRight 9447 ? getContentWidth() : viewState.mScrollX; 9448 int scrollY = viewState.mScrollY; 9449 setContentScrollTo(scrollX, scrollY); 9450 if (!mDrawHistory) { 9451 // As we are on a new page, remove the WebTextView. This 9452 // is necessary for page loads driven by webkit, and in 9453 // particular when the user was on a password field, so 9454 // the WebTextView was visible. 9455 clearTextEntry(); 9456 } 9457 } 9458 mSendScrollEvent = true; 9459 9460 if (DebugFlags.WEB_VIEW) { 9461 Rect b = draw.mInvalRegion.getBounds(); 9462 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 9463 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 9464 } 9465 invalidateContentRect(draw.mInvalRegion.getBounds()); 9466 9467 if (mPictureListener != null) { 9468 mPictureListener.onNewPicture(WebView.this, capturePicture()); 9469 } 9470 9471 // update the zoom information based on the new picture 9472 mZoomManager.onNewPicture(draw); 9473 9474 if (draw.mFocusSizeChanged && inEditingMode()) { 9475 mFocusSizeChanged = true; 9476 } 9477 if (isPictureAfterFirstLayout) { 9478 mViewManager.postReadyToDrawAll(); 9479 } 9480 } 9481 9482 /** 9483 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 9484 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 9485 */ 9486 private void updateTextSelectionFromMessage(int nodePointer, 9487 int textGeneration, WebViewCore.TextSelectionData data) { 9488 if (textGeneration == mTextGeneration) { 9489 if (inEditingMode() 9490 && mWebTextView.isSameTextField(nodePointer)) { 9491 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 9492 } else if (mInputConnection != null && mFieldPointer == nodePointer) { 9493 mInputConnection.setSelection(data.mStart, data.mEnd); 9494 } 9495 } 9496 nativeSetTextSelection(mNativeClass, data.mSelectTextPtr); 9497 if (data.mSelectTextPtr != 0) { 9498 mIsCaretSelection = (mFieldPointer == nodePointer) 9499 && (mFieldPointer != 0) 9500 && (data.mStart == data.mEnd); 9501 if (!mSelectingText) { 9502 setupWebkitSelect(); 9503 } else if (!mSelectionStarted) { 9504 syncSelectionCursors(); 9505 } 9506 if (mIsCaretSelection) { 9507 resetCaretTimer(); 9508 } 9509 } else { 9510 selectionDone(); 9511 } 9512 invalidate(); 9513 } 9514 9515 // Class used to use a dropdown for a <select> element 9516 private class InvokeListBox implements Runnable { 9517 // Whether the listbox allows multiple selection. 9518 private boolean mMultiple; 9519 // Passed in to a list with multiple selection to tell 9520 // which items are selected. 9521 private int[] mSelectedArray; 9522 // Passed in to a list with single selection to tell 9523 // where the initial selection is. 9524 private int mSelection; 9525 9526 private Container[] mContainers; 9527 9528 // Need these to provide stable ids to my ArrayAdapter, 9529 // which normally does not have stable ids. (Bug 1250098) 9530 private class Container extends Object { 9531 /** 9532 * Possible values for mEnabled. Keep in sync with OptionStatus in 9533 * WebViewCore.cpp 9534 */ 9535 final static int OPTGROUP = -1; 9536 final static int OPTION_DISABLED = 0; 9537 final static int OPTION_ENABLED = 1; 9538 9539 String mString; 9540 int mEnabled; 9541 int mId; 9542 9543 @Override 9544 public String toString() { 9545 return mString; 9546 } 9547 } 9548 9549 /** 9550 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 9551 * and allow filtering. 9552 */ 9553 private class MyArrayListAdapter extends ArrayAdapter<Container> { 9554 public MyArrayListAdapter() { 9555 super(mContext, 9556 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 9557 com.android.internal.R.layout.webview_select_singlechoice, 9558 mContainers); 9559 } 9560 9561 @Override 9562 public View getView(int position, View convertView, 9563 ViewGroup parent) { 9564 // Always pass in null so that we will get a new CheckedTextView 9565 // Otherwise, an item which was previously used as an <optgroup> 9566 // element (i.e. has no check), could get used as an <option> 9567 // element, which needs a checkbox/radio, but it would not have 9568 // one. 9569 convertView = super.getView(position, null, parent); 9570 Container c = item(position); 9571 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 9572 // ListView does not draw dividers between disabled and 9573 // enabled elements. Use a LinearLayout to provide dividers 9574 LinearLayout layout = new LinearLayout(mContext); 9575 layout.setOrientation(LinearLayout.VERTICAL); 9576 if (position > 0) { 9577 View dividerTop = new View(mContext); 9578 dividerTop.setBackgroundResource( 9579 android.R.drawable.divider_horizontal_bright); 9580 layout.addView(dividerTop); 9581 } 9582 9583 if (Container.OPTGROUP == c.mEnabled) { 9584 // Currently select_dialog_multichoice uses CheckedTextViews. 9585 // If that changes, the class cast will no longer be valid. 9586 if (mMultiple) { 9587 Assert.assertTrue(convertView instanceof CheckedTextView); 9588 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 9589 } 9590 } else { 9591 // c.mEnabled == Container.OPTION_DISABLED 9592 // Draw the disabled element in a disabled state. 9593 convertView.setEnabled(false); 9594 } 9595 9596 layout.addView(convertView); 9597 if (position < getCount() - 1) { 9598 View dividerBottom = new View(mContext); 9599 dividerBottom.setBackgroundResource( 9600 android.R.drawable.divider_horizontal_bright); 9601 layout.addView(dividerBottom); 9602 } 9603 return layout; 9604 } 9605 return convertView; 9606 } 9607 9608 @Override 9609 public boolean hasStableIds() { 9610 // AdapterView's onChanged method uses this to determine whether 9611 // to restore the old state. Return false so that the old (out 9612 // of date) state does not replace the new, valid state. 9613 return false; 9614 } 9615 9616 private Container item(int position) { 9617 if (position < 0 || position >= getCount()) { 9618 return null; 9619 } 9620 return getItem(position); 9621 } 9622 9623 @Override 9624 public long getItemId(int position) { 9625 Container item = item(position); 9626 if (item == null) { 9627 return -1; 9628 } 9629 return item.mId; 9630 } 9631 9632 @Override 9633 public boolean areAllItemsEnabled() { 9634 return false; 9635 } 9636 9637 @Override 9638 public boolean isEnabled(int position) { 9639 Container item = item(position); 9640 if (item == null) { 9641 return false; 9642 } 9643 return Container.OPTION_ENABLED == item.mEnabled; 9644 } 9645 } 9646 9647 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 9648 mMultiple = true; 9649 mSelectedArray = selected; 9650 9651 int length = array.length; 9652 mContainers = new Container[length]; 9653 for (int i = 0; i < length; i++) { 9654 mContainers[i] = new Container(); 9655 mContainers[i].mString = array[i]; 9656 mContainers[i].mEnabled = enabled[i]; 9657 mContainers[i].mId = i; 9658 } 9659 } 9660 9661 private InvokeListBox(String[] array, int[] enabled, int selection) { 9662 mSelection = selection; 9663 mMultiple = false; 9664 9665 int length = array.length; 9666 mContainers = new Container[length]; 9667 for (int i = 0; i < length; i++) { 9668 mContainers[i] = new Container(); 9669 mContainers[i].mString = array[i]; 9670 mContainers[i].mEnabled = enabled[i]; 9671 mContainers[i].mId = i; 9672 } 9673 } 9674 9675 /* 9676 * Whenever the data set changes due to filtering, this class ensures 9677 * that the checked item remains checked. 9678 */ 9679 private class SingleDataSetObserver extends DataSetObserver { 9680 private long mCheckedId; 9681 private ListView mListView; 9682 private Adapter mAdapter; 9683 9684 /* 9685 * Create a new observer. 9686 * @param id The ID of the item to keep checked. 9687 * @param l ListView for getting and clearing the checked states 9688 * @param a Adapter for getting the IDs 9689 */ 9690 public SingleDataSetObserver(long id, ListView l, Adapter a) { 9691 mCheckedId = id; 9692 mListView = l; 9693 mAdapter = a; 9694 } 9695 9696 @Override 9697 public void onChanged() { 9698 // The filter may have changed which item is checked. Find the 9699 // item that the ListView thinks is checked. 9700 int position = mListView.getCheckedItemPosition(); 9701 long id = mAdapter.getItemId(position); 9702 if (mCheckedId != id) { 9703 // Clear the ListView's idea of the checked item, since 9704 // it is incorrect 9705 mListView.clearChoices(); 9706 // Search for mCheckedId. If it is in the filtered list, 9707 // mark it as checked 9708 int count = mAdapter.getCount(); 9709 for (int i = 0; i < count; i++) { 9710 if (mAdapter.getItemId(i) == mCheckedId) { 9711 mListView.setItemChecked(i, true); 9712 break; 9713 } 9714 } 9715 } 9716 } 9717 } 9718 9719 @Override 9720 public void run() { 9721 final ListView listView = (ListView) LayoutInflater.from(mContext) 9722 .inflate(com.android.internal.R.layout.select_dialog, null); 9723 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 9724 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 9725 .setView(listView).setCancelable(true) 9726 .setInverseBackgroundForced(true); 9727 9728 if (mMultiple) { 9729 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 9730 @Override 9731 public void onClick(DialogInterface dialog, int which) { 9732 mWebViewCore.sendMessage( 9733 EventHub.LISTBOX_CHOICES, 9734 adapter.getCount(), 0, 9735 listView.getCheckedItemPositions()); 9736 }}); 9737 b.setNegativeButton(android.R.string.cancel, 9738 new DialogInterface.OnClickListener() { 9739 @Override 9740 public void onClick(DialogInterface dialog, int which) { 9741 mWebViewCore.sendMessage( 9742 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9743 }}); 9744 } 9745 mListBoxDialog = b.create(); 9746 listView.setAdapter(adapter); 9747 listView.setFocusableInTouchMode(true); 9748 // There is a bug (1250103) where the checks in a ListView with 9749 // multiple items selected are associated with the positions, not 9750 // the ids, so the items do not properly retain their checks when 9751 // filtered. Do not allow filtering on multiple lists until 9752 // that bug is fixed. 9753 9754 listView.setTextFilterEnabled(!mMultiple); 9755 if (mMultiple) { 9756 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 9757 int length = mSelectedArray.length; 9758 for (int i = 0; i < length; i++) { 9759 listView.setItemChecked(mSelectedArray[i], true); 9760 } 9761 } else { 9762 listView.setOnItemClickListener(new OnItemClickListener() { 9763 @Override 9764 public void onItemClick(AdapterView<?> parent, View v, 9765 int position, long id) { 9766 // Rather than sending the message right away, send it 9767 // after the page regains focus. 9768 mListBoxMessage = Message.obtain(null, 9769 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 9770 mListBoxDialog.dismiss(); 9771 mListBoxDialog = null; 9772 } 9773 }); 9774 if (mSelection != -1) { 9775 listView.setSelection(mSelection); 9776 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 9777 listView.setItemChecked(mSelection, true); 9778 DataSetObserver observer = new SingleDataSetObserver( 9779 adapter.getItemId(mSelection), listView, adapter); 9780 adapter.registerDataSetObserver(observer); 9781 } 9782 } 9783 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 9784 @Override 9785 public void onCancel(DialogInterface dialog) { 9786 mWebViewCore.sendMessage( 9787 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9788 mListBoxDialog = null; 9789 } 9790 }); 9791 mListBoxDialog.show(); 9792 } 9793 } 9794 9795 private Message mListBoxMessage; 9796 9797 /* 9798 * Request a dropdown menu for a listbox with multiple selection. 9799 * 9800 * @param array Labels for the listbox. 9801 * @param enabledArray State for each element in the list. See static 9802 * integers in Container class. 9803 * @param selectedArray Which positions are initally selected. 9804 */ 9805 void requestListBox(String[] array, int[] enabledArray, int[] 9806 selectedArray) { 9807 mPrivateHandler.post( 9808 new InvokeListBox(array, enabledArray, selectedArray)); 9809 } 9810 9811 /* 9812 * Request a dropdown menu for a listbox with single selection or a single 9813 * <select> element. 9814 * 9815 * @param array Labels for the listbox. 9816 * @param enabledArray State for each element in the list. See static 9817 * integers in Container class. 9818 * @param selection Which position is initally selected. 9819 */ 9820 void requestListBox(String[] array, int[] enabledArray, int selection) { 9821 mPrivateHandler.post( 9822 new InvokeListBox(array, enabledArray, selection)); 9823 } 9824 9825 // called by JNI 9826 private void sendMoveFocus(int frame, int node) { 9827 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 9828 new WebViewCore.CursorData(frame, node, 0, 0)); 9829 } 9830 9831 // called by JNI 9832 private void sendMoveMouse(int frame, int node, int x, int y) { 9833 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 9834 new WebViewCore.CursorData(frame, node, x, y)); 9835 } 9836 9837 /* 9838 * Send a mouse move event to the webcore thread. 9839 * 9840 * @param removeFocus Pass true to remove the WebTextView, if present. 9841 * @param stopPaintingCaret Stop drawing the blinking caret if true. 9842 * called by JNI 9843 */ 9844 @SuppressWarnings("unused") 9845 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 9846 if (removeFocus) { 9847 clearTextEntry(); 9848 } 9849 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 9850 stopPaintingCaret ? 1 : 0, 0, 9851 cursorData()); 9852 } 9853 9854 /** 9855 * Called by JNI to send a message to the webcore thread that the user 9856 * touched the webpage. 9857 * @param touchGeneration Generation number of the touch, to ignore touches 9858 * after a new one has been generated. 9859 * @param frame Pointer to the frame holding the node that was touched. 9860 * @param node Pointer to the node touched. 9861 * @param x x-position of the touch. 9862 * @param y y-position of the touch. 9863 */ 9864 private void sendMotionUp(int touchGeneration, 9865 int frame, int node, int x, int y) { 9866 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 9867 touchUpData.mMoveGeneration = touchGeneration; 9868 touchUpData.mFrame = frame; 9869 touchUpData.mNode = node; 9870 touchUpData.mX = x; 9871 touchUpData.mY = y; 9872 touchUpData.mNativeLayer = nativeScrollableLayer( 9873 x, y, touchUpData.mNativeLayerRect, null); 9874 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 9875 } 9876 9877 9878 private int getScaledMaxXScroll() { 9879 int width; 9880 if (mHeightCanMeasure == false) { 9881 width = getViewWidth() / 4; 9882 } else { 9883 Rect visRect = new Rect(); 9884 calcOurVisibleRect(visRect); 9885 width = visRect.width() / 2; 9886 } 9887 // FIXME the divisor should be retrieved from somewhere 9888 return viewToContentX(width); 9889 } 9890 9891 private int getScaledMaxYScroll() { 9892 int height; 9893 if (mHeightCanMeasure == false) { 9894 height = getViewHeight() / 4; 9895 } else { 9896 Rect visRect = new Rect(); 9897 calcOurVisibleRect(visRect); 9898 height = visRect.height() / 2; 9899 } 9900 // FIXME the divisor should be retrieved from somewhere 9901 // the closest thing today is hard-coded into ScrollView.java 9902 // (from ScrollView.java, line 363) int maxJump = height/2; 9903 return Math.round(height * mZoomManager.getInvScale()); 9904 } 9905 9906 /** 9907 * Called by JNI to invalidate view 9908 */ 9909 private void viewInvalidate() { 9910 invalidate(); 9911 } 9912 9913 /** 9914 * Pass the key directly to the page. This assumes that 9915 * nativePageShouldHandleShiftAndArrows() returned true. 9916 */ 9917 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 9918 int keyEventAction; 9919 int eventHubAction; 9920 if (down) { 9921 keyEventAction = KeyEvent.ACTION_DOWN; 9922 eventHubAction = EventHub.KEY_DOWN; 9923 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 9924 } else { 9925 keyEventAction = KeyEvent.ACTION_UP; 9926 eventHubAction = EventHub.KEY_UP; 9927 } 9928 9929 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 9930 1, (metaState & KeyEvent.META_SHIFT_ON) 9931 | (metaState & KeyEvent.META_ALT_ON) 9932 | (metaState & KeyEvent.META_SYM_ON) 9933 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 9934 mWebViewCore.sendMessage(eventHubAction, event); 9935 } 9936 9937 // return true if the key was handled 9938 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 9939 long time) { 9940 if (mNativeClass == 0) { 9941 return false; 9942 } 9943 mInitialHitTestResult = null; 9944 mLastCursorTime = time; 9945 mLastCursorBounds = nativeGetCursorRingBounds(); 9946 boolean keyHandled 9947 = nativeMoveCursor(keyCode, count, noScroll) == false; 9948 if (DebugFlags.WEB_VIEW) { 9949 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 9950 + " mLastCursorTime=" + mLastCursorTime 9951 + " handled=" + keyHandled); 9952 } 9953 if (keyHandled == false) { 9954 return keyHandled; 9955 } 9956 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 9957 if (contentCursorRingBounds.isEmpty()) return keyHandled; 9958 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 9959 // set last touch so that context menu related functions will work 9960 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 9961 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 9962 if (mHeightCanMeasure == false) { 9963 return keyHandled; 9964 } 9965 Rect visRect = new Rect(); 9966 calcOurVisibleRect(visRect); 9967 Rect outset = new Rect(visRect); 9968 int maxXScroll = visRect.width() / 2; 9969 int maxYScroll = visRect.height() / 2; 9970 outset.inset(-maxXScroll, -maxYScroll); 9971 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 9972 return keyHandled; 9973 } 9974 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 9975 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 9976 maxXScroll); 9977 if (maxH > 0) { 9978 pinScrollBy(maxH, 0, true, 0); 9979 } else { 9980 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 9981 -maxXScroll); 9982 if (maxH < 0) { 9983 pinScrollBy(maxH, 0, true, 0); 9984 } 9985 } 9986 if (mLastCursorBounds.isEmpty()) return keyHandled; 9987 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 9988 return keyHandled; 9989 } 9990 if (DebugFlags.WEB_VIEW) { 9991 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 9992 + contentCursorRingBounds); 9993 } 9994 requestRectangleOnScreen(viewCursorRingBounds); 9995 return keyHandled; 9996 } 9997 9998 /** 9999 * @return Whether accessibility script has been injected. 10000 */ 10001 private boolean accessibilityScriptInjected() { 10002 // TODO: Maybe the injected script should announce its presence in 10003 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 10004 // will check that as one of the conditions it looks for 10005 return mAccessibilityScriptInjected; 10006 } 10007 10008 /** 10009 * Set the background color. It's white by default. Pass 10010 * zero to make the view transparent. 10011 * @param color the ARGB color described by Color.java 10012 */ 10013 @Override 10014 public void setBackgroundColor(int color) { 10015 mBackgroundColor = color; 10016 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 10017 } 10018 10019 /** 10020 * @deprecated This method is now obsolete. 10021 */ 10022 @Deprecated 10023 public void debugDump() { 10024 checkThread(); 10025 nativeDebugDump(); 10026 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 10027 } 10028 10029 /** 10030 * Draw the HTML page into the specified canvas. This call ignores any 10031 * view-specific zoom, scroll offset, or other changes. It does not draw 10032 * any view-specific chrome, such as progress or URL bars. 10033 * 10034 * @hide only needs to be accessible to Browser and testing 10035 */ 10036 public void drawPage(Canvas canvas) { 10037 calcOurContentVisibleRectF(mVisibleContentRect); 10038 nativeDraw(canvas, mVisibleContentRect, 0, 0, false); 10039 } 10040 10041 /** 10042 * Enable the communication b/t the webView and VideoViewProxy 10043 * 10044 * @hide only used by the Browser 10045 */ 10046 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 10047 mHTML5VideoViewProxy = proxy; 10048 } 10049 10050 /** 10051 * Set the time to wait between passing touches to WebCore. See also the 10052 * TOUCH_SENT_INTERVAL member for further discussion. 10053 * 10054 * @hide This is only used by the DRT test application. 10055 */ 10056 public void setTouchInterval(int interval) { 10057 mCurrentTouchInterval = interval; 10058 } 10059 10060 /** 10061 * Copy text into the clipboard. This is called indirectly from 10062 * WebViewCore. 10063 * @param text The text to put into the clipboard. 10064 */ 10065 private void copyToClipboard(String text) { 10066 ClipboardManager cm = (ClipboardManager)getContext() 10067 .getSystemService(Context.CLIPBOARD_SERVICE); 10068 ClipData clip = ClipData.newPlainText(getTitle(), text); 10069 cm.setPrimaryClip(clip); 10070 } 10071 10072 /** 10073 * Update our cache with updatedText. 10074 * @param updatedText The new text to put in our cache. 10075 * @hide 10076 */ 10077 protected void updateCachedTextfield(String updatedText) { 10078 // Also place our generation number so that when we look at the cache 10079 // we recognize that it is up to date. 10080 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 10081 } 10082 10083 /*package*/ void autoFillForm(int autoFillQueryId) { 10084 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 10085 } 10086 10087 /* package */ ViewManager getViewManager() { 10088 return mViewManager; 10089 } 10090 10091 private static void checkThread() { 10092 if (Looper.myLooper() != Looper.getMainLooper()) { 10093 Throwable throwable = new Throwable( 10094 "Warning: A WebView method was called on thread '" + 10095 Thread.currentThread().getName() + "'. " + 10096 "All WebView methods must be called on the UI thread. " + 10097 "Future versions of WebView may not support use on other threads."); 10098 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 10099 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 10100 } 10101 } 10102 10103 /** @hide send content invalidate */ 10104 protected void contentInvalidateAll() { 10105 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 10106 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 10107 } 10108 } 10109 10110 /** @hide discard all textures from tiles */ 10111 protected void discardAllTextures() { 10112 nativeDiscardAllTextures(); 10113 } 10114 10115 /** 10116 * Begin collecting per-tile profiling data 10117 * 10118 * @hide only used by profiling tests 10119 */ 10120 public void tileProfilingStart() { 10121 nativeTileProfilingStart(); 10122 } 10123 /** 10124 * Return per-tile profiling data 10125 * 10126 * @hide only used by profiling tests 10127 */ 10128 public float tileProfilingStop() { 10129 return nativeTileProfilingStop(); 10130 } 10131 10132 /** @hide only used by profiling tests */ 10133 public void tileProfilingClear() { 10134 nativeTileProfilingClear(); 10135 } 10136 /** @hide only used by profiling tests */ 10137 public int tileProfilingNumFrames() { 10138 return nativeTileProfilingNumFrames(); 10139 } 10140 /** @hide only used by profiling tests */ 10141 public int tileProfilingNumTilesInFrame(int frame) { 10142 return nativeTileProfilingNumTilesInFrame(frame); 10143 } 10144 /** @hide only used by profiling tests */ 10145 public int tileProfilingGetInt(int frame, int tile, String key) { 10146 return nativeTileProfilingGetInt(frame, tile, key); 10147 } 10148 /** @hide only used by profiling tests */ 10149 public float tileProfilingGetFloat(int frame, int tile, String key) { 10150 return nativeTileProfilingGetFloat(frame, tile, key); 10151 } 10152 10153 /** 10154 * Checks the focused content for an editable text field. This can be 10155 * text input or ContentEditable. 10156 * @return true if the focused item is an editable text field. 10157 */ 10158 boolean focusCandidateIsEditableText() { 10159 boolean isEditable = false; 10160 // TODO: reverse sDisableNavcache so that its name is positive 10161 boolean isNavcacheEnabled = !sDisableNavcache; 10162 if (isNavcacheEnabled) { 10163 isEditable = nativeFocusCandidateIsEditableText(mNativeClass); 10164 } else if (mFocusedNode != null) { 10165 isEditable = mFocusedNode.mEditable; 10166 } 10167 return isEditable; 10168 } 10169 10170 private native int nativeCacheHitFramePointer(); 10171 private native boolean nativeCacheHitIsPlugin(); 10172 private native Rect nativeCacheHitNodeBounds(); 10173 private native int nativeCacheHitNodePointer(); 10174 /* package */ native void nativeClearCursor(); 10175 private native void nativeCreate(int ptr, String drawableDir, boolean isHighEndGfx); 10176 private native int nativeCursorFramePointer(); 10177 private native Rect nativeCursorNodeBounds(); 10178 private native int nativeCursorNodePointer(); 10179 private native boolean nativeCursorIntersects(Rect visibleRect); 10180 private native boolean nativeCursorIsAnchor(); 10181 private native boolean nativeCursorIsTextInput(); 10182 private native Point nativeCursorPosition(); 10183 private native String nativeCursorText(); 10184 /** 10185 * Returns true if the native cursor node says it wants to handle key events 10186 * (ala plugins). This can only be called if mNativeClass is non-zero! 10187 */ 10188 private native boolean nativeCursorWantsKeyEvents(); 10189 private native void nativeDebugDump(); 10190 private native void nativeDestroy(); 10191 10192 /** 10193 * Draw the picture set with a background color and extra. If 10194 * "splitIfNeeded" is true and the return value is not 0, the return value 10195 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 10196 * native allocation can be freed. 10197 */ 10198 private native int nativeDraw(Canvas canvas, RectF visibleRect, 10199 int color, int extra, boolean splitIfNeeded); 10200 private native void nativeDumpDisplayTree(String urlOrNull); 10201 private native boolean nativeEvaluateLayersAnimations(int nativeInstance); 10202 private native int nativeGetDrawGLFunction(int nativeInstance, Rect rect, 10203 Rect viewRect, RectF visibleRect, float scale, int extras); 10204 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect, 10205 RectF visibleRect, float scale); 10206 private native void nativeExtendSelection(int x, int y); 10207 /* package */ native int nativeFocusCandidateFramePointer(); 10208 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 10209 /* package */ native boolean nativeFocusCandidateIsPassword(); 10210 private native boolean nativeFocusCandidateIsRtlText(); 10211 private native boolean nativeFocusCandidateIsTextInput(); 10212 private native boolean nativeFocusCandidateIsEditableText(int nativeClass); 10213 /* package */ native int nativeFocusCandidateMaxLength(); 10214 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 10215 /* package */ native boolean nativeFocusCandidateIsSpellcheck(); 10216 /* package */ native String nativeFocusCandidateName(); 10217 private native Rect nativeFocusCandidateNodeBounds(); 10218 /** 10219 * @return A Rect with left, top, right, bottom set to the corresponding 10220 * padding values in the focus candidate, if it is a textfield/textarea with 10221 * a style. Otherwise return null. This is not actually a rectangle; Rect 10222 * is being used to pass four integers. 10223 */ 10224 private native Rect nativeFocusCandidatePaddingRect(); 10225 /* package */ native int nativeFocusCandidatePointer(); 10226 private native String nativeFocusCandidateText(); 10227 /* package */ native float nativeFocusCandidateTextSize(); 10228 /* package */ native int nativeFocusCandidateLineHeight(); 10229 /** 10230 * Returns an integer corresponding to WebView.cpp::type. 10231 * See WebTextView.setType() 10232 */ 10233 private native int nativeFocusCandidateType(); 10234 private native int nativeFocusCandidateLayerId(); 10235 private native boolean nativeFocusIsPlugin(); 10236 private native Rect nativeFocusNodeBounds(); 10237 /* package */ native int nativeFocusNodePointer(); 10238 private native Rect nativeGetCursorRingBounds(); 10239 private native String nativeGetSelection(); 10240 private native boolean nativeHasCursorNode(); 10241 private native boolean nativeHasFocusNode(); 10242 private native void nativeHideCursor(); 10243 private native boolean nativeHitSelection(int x, int y); 10244 private native String nativeImageURI(int x, int y); 10245 private native Rect nativeLayerBounds(int layer); 10246 /* package */ native boolean nativeMoveCursorToNextTextInput(); 10247 // return true if the page has been scrolled 10248 private native boolean nativeMotionUp(int x, int y, int slop); 10249 // returns false if it handled the key 10250 private native boolean nativeMoveCursor(int keyCode, int count, 10251 boolean noScroll); 10252 private native int nativeMoveGeneration(); 10253 /** 10254 * @return true if the page should get the shift and arrow keys, rather 10255 * than select text/navigation. 10256 * 10257 * If the focus is a plugin, or if the focus and cursor match and are 10258 * a contentEditable element, then the page should handle these keys. 10259 */ 10260 private native boolean nativePageShouldHandleShiftAndArrows(); 10261 private native boolean nativePointInNavCache(int x, int y, int slop); 10262 private native void nativeSelectBestAt(Rect rect); 10263 private native void nativeSelectAt(int x, int y); 10264 private native void nativeSetExtendSelection(); 10265 private native void nativeSetFindIsUp(boolean isUp); 10266 private native void nativeSetHeightCanMeasure(boolean measure); 10267 private native boolean nativeSetBaseLayer(int nativeInstance, 10268 int layer, Region invalRegion, 10269 boolean showVisualIndicator, boolean isPictureAfterFirstLayout); 10270 private native int nativeGetBaseLayer(); 10271 private native void nativeShowCursorTimed(); 10272 private native void nativeReplaceBaseContent(int content); 10273 private native void nativeCopyBaseContentToPicture(Picture pict); 10274 private native boolean nativeHasContent(); 10275 private native void nativeSetSelectionPointer(int nativeInstance, 10276 boolean set, float scale, int x, int y); 10277 private native boolean nativeStartSelection(int x, int y); 10278 private native void nativeStopGL(); 10279 private native Rect nativeSubtractLayers(Rect content); 10280 private native int nativeTextGeneration(); 10281 private native void nativeDiscardAllTextures(); 10282 private native void nativeTileProfilingStart(); 10283 private native float nativeTileProfilingStop(); 10284 private native void nativeTileProfilingClear(); 10285 private native int nativeTileProfilingNumFrames(); 10286 private native int nativeTileProfilingNumTilesInFrame(int frame); 10287 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 10288 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 10289 // Never call this version except by updateCachedTextfield(String) - 10290 // we always want to pass in our generation number. 10291 private native void nativeUpdateCachedTextfield(String updatedText, 10292 int generation); 10293 private native boolean nativeWordSelection(int x, int y); 10294 // return NO_LEFTEDGE means failure. 10295 static final int NO_LEFTEDGE = -1; 10296 native int nativeGetBlockLeftEdge(int x, int y, float scale); 10297 10298 private native void nativeUseHardwareAccelSkia(boolean enabled); 10299 10300 // Returns a pointer to the scrollable LayerAndroid at the given point. 10301 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 10302 Rect scrollBounds); 10303 /** 10304 * Scroll the specified layer. 10305 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 10306 * @param newX Destination x position to which to scroll. 10307 * @param newY Destination y position to which to scroll. 10308 * @return True if the layer is successfully scrolled. 10309 */ 10310 private native boolean nativeScrollLayer(int layer, int newX, int newY); 10311 private native void nativeSetIsScrolling(boolean isScrolling); 10312 private native int nativeGetBackgroundColor(); 10313 native boolean nativeSetProperty(String key, String value); 10314 native String nativeGetProperty(String key); 10315 /** 10316 * See {@link ComponentCallbacks2} for the trim levels and descriptions 10317 */ 10318 private static native void nativeOnTrimMemory(int level); 10319 private static native void nativeSetPauseDrawing(int instance, boolean pause); 10320 private static native boolean nativeDisableNavcache(); 10321 private static native void nativeSetTextSelection(int instance, int selection); 10322 private static native int nativeGetHandleLayerId(int instance, int handle, 10323 Rect cursorLocation); 10324 private static native boolean nativeIsBaseFirst(int instance); 10325} 10326