WebView.java revision e83b83fe20aa89f9bf730bb07006890f6c65e89c
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.annotation.Widget; 20import android.app.ActivityManager; 21import android.app.AlertDialog; 22import android.content.BroadcastReceiver; 23import android.content.ClipData; 24import android.content.ClipboardManager; 25import android.content.ComponentCallbacks2; 26import android.content.Context; 27import android.content.DialogInterface; 28import android.content.DialogInterface.OnCancelListener; 29import android.content.Intent; 30import android.content.IntentFilter; 31import android.content.pm.PackageManager; 32import android.content.res.Configuration; 33import android.database.DataSetObserver; 34import android.graphics.Bitmap; 35import android.graphics.BitmapFactory; 36import android.graphics.BitmapShader; 37import android.graphics.Canvas; 38import android.graphics.Color; 39import android.graphics.DrawFilter; 40import android.graphics.Paint; 41import android.graphics.PaintFlagsDrawFilter; 42import android.graphics.Picture; 43import android.graphics.Point; 44import android.graphics.Rect; 45import android.graphics.RectF; 46import android.graphics.Region; 47import android.graphics.RegionIterator; 48import android.graphics.Shader; 49import android.graphics.drawable.Drawable; 50import android.net.Proxy; 51import android.net.ProxyProperties; 52import android.net.Uri; 53import android.net.http.SslCertificate; 54import android.os.AsyncTask; 55import android.os.Bundle; 56import android.os.Handler; 57import android.os.Looper; 58import android.os.Message; 59import android.os.StrictMode; 60import android.os.SystemClock; 61import android.provider.Settings; 62import android.security.KeyChain; 63import android.speech.tts.TextToSpeech; 64import android.text.Editable; 65import android.text.InputType; 66import android.text.Selection; 67import android.text.TextUtils; 68import android.util.AttributeSet; 69import android.util.EventLog; 70import android.util.Log; 71import android.view.Display; 72import android.view.Gravity; 73import android.view.HapticFeedbackConstants; 74import android.view.HardwareCanvas; 75import android.view.InputDevice; 76import android.view.KeyCharacterMap; 77import android.view.KeyEvent; 78import android.view.LayoutInflater; 79import android.view.MotionEvent; 80import android.view.ScaleGestureDetector; 81import android.view.SoundEffectConstants; 82import android.view.VelocityTracker; 83import android.view.View; 84import android.view.ViewConfiguration; 85import android.view.ViewGroup; 86import android.view.ViewParent; 87import android.view.ViewTreeObserver; 88import android.view.WindowManager; 89import android.view.accessibility.AccessibilityEvent; 90import android.view.accessibility.AccessibilityManager; 91import android.view.accessibility.AccessibilityNodeInfo; 92import android.view.inputmethod.BaseInputConnection; 93import android.view.inputmethod.EditorInfo; 94import android.view.inputmethod.InputConnection; 95import android.view.inputmethod.InputMethodManager; 96import android.webkit.WebTextView.AutoCompleteAdapter; 97import android.webkit.WebViewCore.DrawData; 98import android.webkit.WebViewCore.EventHub; 99import android.webkit.WebViewCore.TouchEventData; 100import android.webkit.WebViewCore.TouchHighlightData; 101import android.webkit.WebViewCore.WebKitHitTest; 102import android.widget.AbsoluteLayout; 103import android.widget.Adapter; 104import android.widget.AdapterView; 105import android.widget.AdapterView.OnItemClickListener; 106import android.widget.ArrayAdapter; 107import android.widget.CheckedTextView; 108import android.widget.LinearLayout; 109import android.widget.ListView; 110import android.widget.OverScroller; 111import android.widget.Toast; 112 113import junit.framework.Assert; 114 115import java.io.File; 116import java.io.FileInputStream; 117import java.io.FileNotFoundException; 118import java.io.FileOutputStream; 119import java.io.IOException; 120import java.io.InputStream; 121import java.io.OutputStream; 122import java.net.URLDecoder; 123import java.util.ArrayList; 124import java.util.HashMap; 125import java.util.HashSet; 126import java.util.List; 127import java.util.Map; 128import java.util.Set; 129import java.util.Vector; 130import java.util.regex.Matcher; 131import java.util.regex.Pattern; 132 133/** 134 * <p>A View that displays web pages. This class is the basis upon which you 135 * can roll your own web browser or simply display some online content within your Activity. 136 * It uses the WebKit rendering engine to display 137 * web pages and includes methods to navigate forward and backward 138 * through a history, zoom in and out, perform text searches and more.</p> 139 * <p>To enable the built-in zoom, set 140 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 141 * (introduced in API version 3). 142 * <p>Note that, in order for your Activity to access the Internet and load web pages 143 * in a WebView, you must add the {@code INTERNET} permissions to your 144 * Android Manifest file:</p> 145 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 146 * 147 * <p>This must be a child of the <a 148 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 149 * element.</p> 150 * 151 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 152 * tutorial</a>.</p> 153 * 154 * <h3>Basic usage</h3> 155 * 156 * <p>By default, a WebView provides no browser-like widgets, does not 157 * enable JavaScript and web page errors are ignored. If your goal is only 158 * to display some HTML as a part of your UI, this is probably fine; 159 * the user won't need to interact with the web page beyond reading 160 * it, and the web page won't need to interact with the user. If you 161 * actually want a full-blown web browser, then you probably want to 162 * invoke the Browser application with a URL Intent rather than show it 163 * with a WebView. For example: 164 * <pre> 165 * Uri uri = Uri.parse("http://www.example.com"); 166 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 167 * startActivity(intent); 168 * </pre> 169 * <p>See {@link android.content.Intent} for more information.</p> 170 * 171 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 172 * or set the entire Activity window as a WebView during {@link 173 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 174 * <pre class="prettyprint"> 175 * WebView webview = new WebView(this); 176 * setContentView(webview); 177 * </pre> 178 * 179 * <p>Then load the desired web page:</p> 180 * <pre> 181 * // Simplest usage: note that an exception will NOT be thrown 182 * // if there is an error loading this page (see below). 183 * webview.loadUrl("http://slashdot.org/"); 184 * 185 * // OR, you can also load from an HTML string: 186 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 187 * webview.loadData(summary, "text/html", null); 188 * // ... although note that there are restrictions on what this HTML can do. 189 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 190 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 191 * </pre> 192 * 193 * <p>A WebView has several customization points where you can add your 194 * own behavior. These are:</p> 195 * 196 * <ul> 197 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 198 * This class is called when something that might impact a 199 * browser UI happens, for instance, progress updates and 200 * JavaScript alerts are sent here (see <a 201 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 202 * </li> 203 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 204 * It will be called when things happen that impact the 205 * rendering of the content, eg, errors or form submissions. You 206 * can also intercept URL loading here (via {@link 207 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 208 * shouldOverrideUrlLoading()}).</li> 209 * <li>Modifying the {@link android.webkit.WebSettings}, such as 210 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 211 * setJavaScriptEnabled()}. </li> 212 * <li>Injecting Java objects into the WebView using the 213 * {@link android.webkit.WebView#addJavascriptInterface} method. This 214 * method allows you to inject Java objects into a page's JavaScript 215 * context, so that they can be accessed by JavaScript in the page.</li> 216 * </ul> 217 * 218 * <p>Here's a more complicated example, showing error handling, 219 * settings, and progress notification:</p> 220 * 221 * <pre class="prettyprint"> 222 * // Let's display the progress in the activity title bar, like the 223 * // browser app does. 224 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 225 * 226 * webview.getSettings().setJavaScriptEnabled(true); 227 * 228 * final Activity activity = this; 229 * webview.setWebChromeClient(new WebChromeClient() { 230 * public void onProgressChanged(WebView view, int progress) { 231 * // Activities and WebViews measure progress with different scales. 232 * // The progress meter will automatically disappear when we reach 100% 233 * activity.setProgress(progress * 1000); 234 * } 235 * }); 236 * webview.setWebViewClient(new WebViewClient() { 237 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 238 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 239 * } 240 * }); 241 * 242 * webview.loadUrl("http://slashdot.org/"); 243 * </pre> 244 * 245 * <h3>Cookie and window management</h3> 246 * 247 * <p>For obvious security reasons, your application has its own 248 * cache, cookie store etc.—it does not share the Browser 249 * application's data. Cookies are managed on a separate thread, so 250 * operations like index building don't block the UI 251 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 252 * if you want to use cookies in your application. 253 * </p> 254 * 255 * <p>By default, requests by the HTML to open new windows are 256 * ignored. This is true whether they be opened by JavaScript or by 257 * the target attribute on a link. You can customize your 258 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 259 * and render them in whatever manner you want.</p> 260 * 261 * <p>The standard behavior for an Activity is to be destroyed and 262 * recreated when the device orientation or any other configuration changes. This will cause 263 * the WebView to reload the current page. If you don't want that, you 264 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 265 * changes, and then just leave the WebView alone. It'll automatically 266 * re-orient itself as appropriate. Read <a 267 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 268 * more information about how to handle configuration changes during runtime.</p> 269 * 270 * 271 * <h3>Building web pages to support different screen densities</h3> 272 * 273 * <p>The screen density of a device is based on the screen resolution. A screen with low density 274 * has fewer available pixels per inch, where a screen with high density 275 * has more — sometimes significantly more — pixels per inch. The density of a 276 * screen is important because, other things being equal, a UI element (such as a button) whose 277 * height and width are defined in terms of screen pixels will appear larger on the lower density 278 * screen and smaller on the higher density screen. 279 * For simplicity, Android collapses all actual screen densities into three generalized densities: 280 * high, medium, and low.</p> 281 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 282 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 283 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 284 * are bigger). 285 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 286 * you (as a web developer) target screens with different screen densities.</p> 287 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 288 * <ul> 289 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 290 * default scaling factor used for the current device. For example, if the value of {@code 291 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 292 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 293 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 294 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 295 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 296 * (discussed below), then you can stop this default scaling behavior.</li> 297 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 298 * densities for which this style sheet is to be used. The corresponding value should be either 299 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 300 * density, or high density screens, respectively. For example: 301 * <pre> 302 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 303 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 304 * which is the high density pixel ratio.</p> 305 * </li> 306 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 307 * this to specify the target density for which the web page is designed, using the following 308 * values: 309 * <ul> 310 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 311 * occurs.</li> 312 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 313 * as appropriate.</li> 314 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 315 * low density screens scale down. This is also the default behavior.</li> 316 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 317 * as appropriate.</li> 318 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 319 * values are 70-400).</li> 320 * </ul> 321 * <p>Here's an example meta tag to specify the target density:</p> 322 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 323 * </ul> 324 * <p>If you want to modify your web page for different densities, by using the {@code 325 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 326 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 327 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 328 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 329 * 330 * <h3>HTML5 Video support</h3> 331 * 332 * <p>In order to support inline HTML5 video in your application, you need to have hardware 333 * acceleration turned on, and set a {@link android.webkit.WebChromeClient}. For full screen support, 334 * implementations of {@link WebChromeClient#onShowCustomView(View, WebChromeClient.CustomViewCallback)} 335 * and {@link WebChromeClient#onHideCustomView()} are required, 336 * {@link WebChromeClient#getVideoLoadingProgressView()} is optional. 337 * </p> 338 * 339 * 340 */ 341@Widget 342public class WebView extends AbsoluteLayout 343 implements ViewTreeObserver.OnGlobalFocusChangeListener, 344 ViewGroup.OnHierarchyChangeListener { 345 346 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 347 @Override 348 public void onGlobalLayout() { 349 if (isShown()) { 350 setGLRectViewport(); 351 } 352 } 353 } 354 355 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 356 @Override 357 public void onScrollChanged() { 358 if (isShown()) { 359 setGLRectViewport(); 360 } 361 } 362 } 363 364 /** 365 * InputConnection used for ContentEditable. This captures changes 366 * to the text and sends them either as key strokes or text changes. 367 */ 368 private class WebViewInputConnection extends BaseInputConnection { 369 // Used for mapping characters to keys typed. 370 private KeyCharacterMap mKeyCharacterMap; 371 private boolean mIsKeySentByMe; 372 373 public WebViewInputConnection() { 374 super(WebView.this, true); 375 } 376 377 @Override 378 public boolean sendKeyEvent(KeyEvent event) { 379 // Latin IME occasionally sends delete codes directly using 380 // sendKeyEvents. WebViewInputConnection should treat this 381 // as a deleteSurroundingText. 382 if (!mIsKeySentByMe 383 && event.getKeyCode() == KeyEvent.KEYCODE_DEL) { 384 Editable editable = getEditable(); 385 int selectionStart = Selection.getSelectionStart(editable); 386 int selectionEnd = Selection.getSelectionEnd(editable); 387 if (selectionEnd > 0 && (selectionStart == selectionEnd)) { 388 int action = event.getAction(); 389 if (action == KeyEvent.ACTION_UP) { 390 return deleteSurroundingText(1, 0); 391 } else if (action == KeyEvent.ACTION_DOWN) { 392 return true; // the delete will happen in ACTION_UP 393 } 394 } 395 } 396 return super.sendKeyEvent(event); 397 } 398 399 public void setTextAndKeepSelection(CharSequence text) { 400 Editable editable = getEditable(); 401 int selectionStart = Selection.getSelectionStart(editable); 402 int selectionEnd = Selection.getSelectionEnd(editable); 403 editable.replace(0, editable.length(), text); 404 InputMethodManager imm = InputMethodManager.peekInstance(); 405 if (imm != null) { 406 // Since the text has changed, do not allow the IME to replace the 407 // existing text as though it were a completion. 408 imm.restartInput(WebView.this); 409 } 410 // Keep the previous selection. 411 selectionStart = Math.min(selectionStart, editable.length()); 412 selectionEnd = Math.min(selectionEnd, editable.length()); 413 setSelection(selectionStart, selectionEnd); 414 } 415 416 @Override 417 public boolean setComposingText(CharSequence text, int newCursorPosition) { 418 Editable editable = getEditable(); 419 int start = getComposingSpanStart(editable); 420 int end = getComposingSpanEnd(editable); 421 if (start < 0 || end < 0) { 422 start = Selection.getSelectionStart(editable); 423 end = Selection.getSelectionEnd(editable); 424 } 425 if (end < start) { 426 int temp = end; 427 end = start; 428 start = temp; 429 } 430 setNewText(start, end, text); 431 return super.setComposingText(text, newCursorPosition); 432 } 433 434 @Override 435 public boolean commitText(CharSequence text, int newCursorPosition) { 436 setComposingText(text, newCursorPosition); 437 int cursorPosition = Selection.getSelectionEnd(getEditable()); 438 setComposingRegion(cursorPosition, cursorPosition); 439 return true; 440 } 441 442 @Override 443 public boolean deleteSurroundingText(int leftLength, int rightLength) { 444 Editable editable = getEditable(); 445 int cursorPosition = Selection.getSelectionEnd(editable); 446 int startDelete = Math.max(0, cursorPosition - leftLength); 447 int endDelete = Math.min(editable.length(), 448 cursorPosition + rightLength); 449 setNewText(startDelete, endDelete, ""); 450 return super.deleteSurroundingText(leftLength, rightLength); 451 } 452 453 /** 454 * Sends a text change to webkit indirectly. If it is a single- 455 * character add or delete, it sends it as a key stroke. If it cannot 456 * be represented as a key stroke, it sends it as a field change. 457 * @param start The start offset (inclusive) of the text being changed. 458 * @param end The end offset (exclusive) of the text being changed. 459 * @param text The new text to replace the changed text. 460 */ 461 private void setNewText(int start, int end, CharSequence text) { 462 mIsKeySentByMe = true; 463 Editable editable = getEditable(); 464 CharSequence original = editable.subSequence(start, end); 465 boolean isCharacterAdd = false; 466 boolean isCharacterDelete = false; 467 int textLength = text.length(); 468 int originalLength = original.length(); 469 if (textLength > originalLength) { 470 isCharacterAdd = (textLength == originalLength + 1) 471 && TextUtils.regionMatches(text, 0, original, 0, 472 originalLength); 473 } else if (originalLength > textLength) { 474 isCharacterDelete = (textLength == originalLength - 1) 475 && TextUtils.regionMatches(text, 0, original, 0, 476 textLength); 477 } 478 if (isCharacterAdd) { 479 sendCharacter(text.charAt(textLength - 1)); 480 } else if (isCharacterDelete) { 481 sendDeleteKey(); 482 } else if (textLength != originalLength || 483 !TextUtils.regionMatches(text, 0, original, 0, 484 textLength)) { 485 // Send a message so that key strokes and text replacement 486 // do not come out of order. 487 Message replaceMessage = mPrivateHandler.obtainMessage( 488 REPLACE_TEXT, start, end, text.toString()); 489 mPrivateHandler.sendMessage(replaceMessage); 490 } 491 mIsKeySentByMe = false; 492 } 493 494 /** 495 * Send a single character to the WebView as a key down and up event. 496 * @param c The character to be sent. 497 */ 498 private void sendCharacter(char c) { 499 if (mKeyCharacterMap == null) { 500 mKeyCharacterMap = KeyCharacterMap.load(KeyCharacterMap.VIRTUAL_KEYBOARD); 501 } 502 char[] chars = new char[1]; 503 chars[0] = c; 504 KeyEvent[] events = mKeyCharacterMap.getEvents(chars); 505 if (events != null) { 506 for (KeyEvent event : events) { 507 sendKeyEvent(event); 508 } 509 } 510 } 511 512 /** 513 * Send the delete character as a key down and up event. 514 */ 515 private void sendDeleteKey() { 516 long eventTime = SystemClock.uptimeMillis(); 517 sendKeyEvent(new KeyEvent(eventTime, eventTime, 518 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL, 0, 0, 519 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 520 KeyEvent.FLAG_SOFT_KEYBOARD)); 521 sendKeyEvent(new KeyEvent(SystemClock.uptimeMillis(), eventTime, 522 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DEL, 0, 0, 523 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 524 KeyEvent.FLAG_SOFT_KEYBOARD)); 525 } 526 } 527 528 529 // The listener to capture global layout change event. 530 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 531 532 // The listener to capture scroll event. 533 private InnerScrollChangedListener mScrollChangedListener = null; 534 535 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 536 // the screen all-the-time. Good for profiling our drawing code 537 static private final boolean AUTO_REDRAW_HACK = false; 538 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 539 private boolean mAutoRedraw; 540 541 // Reference to the AlertDialog displayed by InvokeListBox. 542 // It's used to dismiss the dialog in destroy if not done before. 543 private AlertDialog mListBoxDialog = null; 544 545 static final String LOGTAG = "webview"; 546 547 private ZoomManager mZoomManager; 548 549 private final Rect mGLRectViewport = new Rect(); 550 private final Rect mViewRectViewport = new Rect(); 551 private final RectF mVisibleContentRect = new RectF(); 552 private boolean mGLViewportEmpty = false; 553 WebViewInputConnection mInputConnection = null; 554 private int mFieldPointer; 555 556 /** 557 * Transportation object for returning WebView across thread boundaries. 558 */ 559 public class WebViewTransport { 560 private WebView mWebview; 561 562 /** 563 * Set the WebView to the transportation object. 564 * @param webview The WebView to transport. 565 */ 566 public synchronized void setWebView(WebView webview) { 567 mWebview = webview; 568 } 569 570 /** 571 * Return the WebView object. 572 * @return WebView The transported WebView object. 573 */ 574 public synchronized WebView getWebView() { 575 return mWebview; 576 } 577 } 578 579 private static class OnTrimMemoryListener implements ComponentCallbacks2 { 580 private static OnTrimMemoryListener sInstance = null; 581 582 static void init(Context c) { 583 if (sInstance == null) { 584 sInstance = new OnTrimMemoryListener(c.getApplicationContext()); 585 } 586 } 587 588 private OnTrimMemoryListener(Context c) { 589 c.registerComponentCallbacks(this); 590 } 591 592 @Override 593 public void onConfigurationChanged(Configuration newConfig) { 594 // Ignore 595 } 596 597 @Override 598 public void onLowMemory() { 599 // Ignore 600 } 601 602 @Override 603 public void onTrimMemory(int level) { 604 if (DebugFlags.WEB_VIEW) { 605 Log.d("WebView", "onTrimMemory: " + level); 606 } 607 WebView.nativeOnTrimMemory(level); 608 } 609 610 } 611 612 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 613 private final CallbackProxy mCallbackProxy; 614 615 private final WebViewDatabase mDatabase; 616 617 // SSL certificate for the main top-level page (if secure) 618 private SslCertificate mCertificate; 619 620 // Native WebView pointer that is 0 until the native object has been 621 // created. 622 private int mNativeClass; 623 // This would be final but it needs to be set to null when the WebView is 624 // destroyed. 625 private WebViewCore mWebViewCore; 626 // Handler for dispatching UI messages. 627 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 628 private WebTextView mWebTextView; 629 // Used to ignore changes to webkit text that arrives to the UI side after 630 // more key events. 631 private int mTextGeneration; 632 633 /* package */ void incrementTextGeneration() { mTextGeneration++; } 634 635 // Used by WebViewCore to create child views. 636 /* package */ final ViewManager mViewManager; 637 638 // Used to display in full screen mode 639 PluginFullScreenHolder mFullScreenHolder; 640 641 /** 642 * Position of the last touch event in pixels. 643 * Use integer to prevent loss of dragging delta calculation accuracy; 644 * which was done in float and converted to integer, and resulted in gradual 645 * and compounding touch position and view dragging mismatch. 646 */ 647 private int mLastTouchX; 648 private int mLastTouchY; 649 private int mStartTouchX; 650 private int mStartTouchY; 651 private float mAverageAngle; 652 653 /** 654 * Time of the last touch event. 655 */ 656 private long mLastTouchTime; 657 658 /** 659 * Time of the last time sending touch event to WebViewCore 660 */ 661 private long mLastSentTouchTime; 662 663 /** 664 * The minimum elapsed time before sending another ACTION_MOVE event to 665 * WebViewCore. This really should be tuned for each type of the devices. 666 * For example in Google Map api test case, it takes Dream device at least 667 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 668 * triggering the layout and drawing the picture. While the same process 669 * takes 60+ms on the current high speed device. If we make 670 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 671 * to WebViewCore queue and the real layout and draw events will be pushed 672 * to further, which slows down the refresh rate. Choose 50 to favor the 673 * current high speed devices. For Dream like devices, 100 is a better 674 * choice. Maybe make this in the buildspec later. 675 * (Update 12/14/2010: changed to 0 since current device should be able to 676 * handle the raw events and Map team voted to have the raw events too. 677 */ 678 private static final int TOUCH_SENT_INTERVAL = 0; 679 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 680 681 /** 682 * Helper class to get velocity for fling 683 */ 684 VelocityTracker mVelocityTracker; 685 private int mMaximumFling; 686 private float mLastVelocity; 687 private float mLastVelX; 688 private float mLastVelY; 689 690 // The id of the native layer being scrolled. 691 private int mCurrentScrollingLayerId; 692 private Rect mScrollingLayerRect = new Rect(); 693 694 // only trigger accelerated fling if the new velocity is at least 695 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 696 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 697 698 /** 699 * Touch mode 700 */ 701 private int mTouchMode = TOUCH_DONE_MODE; 702 private static final int TOUCH_INIT_MODE = 1; 703 private static final int TOUCH_DRAG_START_MODE = 2; 704 private static final int TOUCH_DRAG_MODE = 3; 705 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 706 private static final int TOUCH_SHORTPRESS_MODE = 5; 707 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 708 private static final int TOUCH_DONE_MODE = 7; 709 private static final int TOUCH_PINCH_DRAG = 8; 710 private static final int TOUCH_DRAG_LAYER_MODE = 9; 711 712 // Whether to forward the touch events to WebCore 713 // Can only be set by WebKit via JNI. 714 private boolean mForwardTouchEvents = false; 715 716 // Whether to prevent default during touch. The initial value depends on 717 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 718 // for touch down. Otherwise UI will wait for the answer of the first 719 // confirmed move before taking over the control. 720 private static final int PREVENT_DEFAULT_NO = 0; 721 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 722 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 723 private static final int PREVENT_DEFAULT_YES = 3; 724 private static final int PREVENT_DEFAULT_IGNORE = 4; 725 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 726 727 // true when the touch movement exceeds the slop 728 private boolean mConfirmMove; 729 730 // if true, touch events will be first processed by WebCore, if prevent 731 // default is not set, the UI will continue handle them. 732 private boolean mDeferTouchProcess; 733 734 // to avoid interfering with the current touch events, track them 735 // separately. Currently no snapping or fling in the deferred process mode 736 private int mDeferTouchMode = TOUCH_DONE_MODE; 737 private float mLastDeferTouchX; 738 private float mLastDeferTouchY; 739 740 // To keep track of whether the current drag was initiated by a WebTextView, 741 // so that we know not to hide the cursor 742 boolean mDragFromTextInput; 743 744 // Whether or not to draw the cursor ring. 745 private boolean mDrawCursorRing = true; 746 747 // true if onPause has been called (and not onResume) 748 private boolean mIsPaused; 749 750 private HitTestResult mInitialHitTestResult; 751 private WebKitHitTest mFocusedNode; 752 753 /** 754 * Customizable constant 755 */ 756 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 757 private int mTouchSlopSquare; 758 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 759 private int mDoubleTapSlopSquare; 760 // pre-computed density adjusted navigation slop 761 private int mNavSlop; 762 // This should be ViewConfiguration.getTapTimeout() 763 // But system time out is 100ms, which is too short for the browser. 764 // In the browser, if it switches out of tap too soon, jump tap won't work. 765 // In addition, a double tap on a trackpad will always have a duration of 766 // 300ms, so this value must be at least that (otherwise we will timeout the 767 // first tap and convert it to a long press). 768 private static final int TAP_TIMEOUT = 300; 769 // This should be ViewConfiguration.getLongPressTimeout() 770 // But system time out is 500ms, which is too short for the browser. 771 // With a short timeout, it's difficult to treat trigger a short press. 772 private static final int LONG_PRESS_TIMEOUT = 1000; 773 // needed to avoid flinging after a pause of no movement 774 private static final int MIN_FLING_TIME = 250; 775 // draw unfiltered after drag is held without movement 776 private static final int MOTIONLESS_TIME = 100; 777 // The amount of content to overlap between two screens when going through 778 // pages with the space bar, in pixels. 779 private static final int PAGE_SCROLL_OVERLAP = 24; 780 781 /** 782 * These prevent calling requestLayout if either dimension is fixed. This 783 * depends on the layout parameters and the measure specs. 784 */ 785 boolean mWidthCanMeasure; 786 boolean mHeightCanMeasure; 787 788 // Remember the last dimensions we sent to the native side so we can avoid 789 // sending the same dimensions more than once. 790 int mLastWidthSent; 791 int mLastHeightSent; 792 // Since view height sent to webkit could be fixed to avoid relayout, this 793 // value records the last sent actual view height. 794 int mLastActualHeightSent; 795 796 private int mContentWidth; // cache of value from WebViewCore 797 private int mContentHeight; // cache of value from WebViewCore 798 799 // Need to have the separate control for horizontal and vertical scrollbar 800 // style than the View's single scrollbar style 801 private boolean mOverlayHorizontalScrollbar = true; 802 private boolean mOverlayVerticalScrollbar = false; 803 804 // our standard speed. this way small distances will be traversed in less 805 // time than large distances, but we cap the duration, so that very large 806 // distances won't take too long to get there. 807 private static final int STD_SPEED = 480; // pixels per second 808 // time for the longest scroll animation 809 private static final int MAX_DURATION = 750; // milliseconds 810 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 811 812 // Used by OverScrollGlow 813 OverScroller mScroller; 814 815 private boolean mInOverScrollMode = false; 816 private static Paint mOverScrollBackground; 817 private static Paint mOverScrollBorder; 818 819 private boolean mWrapContent; 820 private static final int MOTIONLESS_FALSE = 0; 821 private static final int MOTIONLESS_PENDING = 1; 822 private static final int MOTIONLESS_TRUE = 2; 823 private static final int MOTIONLESS_IGNORE = 3; 824 private int mHeldMotionless; 825 826 // An instance for injecting accessibility in WebViews with disabled 827 // JavaScript or ones for which no accessibility script exists 828 private AccessibilityInjector mAccessibilityInjector; 829 830 // flag indicating if accessibility script is injected so we 831 // know to handle Shift and arrows natively first 832 private boolean mAccessibilityScriptInjected; 833 834 private Drawable mSelectHandleLeft; 835 private Drawable mSelectHandleRight; 836 private Rect mSelectCursorBase = new Rect(); 837 private int mSelectCursorBaseLayerId; 838 private Rect mSelectCursorExtent = new Rect(); 839 private int mSelectCursorExtentLayerId; 840 private Rect mSelectDraggingCursor; 841 private Point mSelectDraggingOffset = new Point(); 842 static final int HANDLE_ID_START = 0; 843 static final int HANDLE_ID_END = 1; 844 static final int HANDLE_ID_BASE = 2; 845 static final int HANDLE_ID_EXTENT = 3; 846 847 static boolean sDisableNavcache = false; 848 static boolean sEnableWebTextView = false; 849 // the color used to highlight the touch rectangles 850 static final int HIGHLIGHT_COLOR = 0x6633b5e5; 851 // the region indicating where the user touched on the screen 852 private Region mTouchHighlightRegion = new Region(); 853 // the paint for the touch highlight 854 private Paint mTouchHightlightPaint = new Paint(); 855 // debug only 856 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 857 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 858 private Paint mTouchCrossHairColor; 859 private int mTouchHighlightX; 860 private int mTouchHighlightY; 861 private long mTouchHighlightRequested; 862 863 // Basically this proxy is used to tell the Video to update layer tree at 864 // SetBaseLayer time and to pause when WebView paused. 865 private HTML5VideoViewProxy mHTML5VideoViewProxy; 866 867 // If we are using a set picture, don't send view updates to webkit 868 private boolean mBlockWebkitViewMessages = false; 869 870 // cached value used to determine if we need to switch drawing models 871 private boolean mHardwareAccelSkia = false; 872 873 /* 874 * Private message ids 875 */ 876 private static final int REMEMBER_PASSWORD = 1; 877 private static final int NEVER_REMEMBER_PASSWORD = 2; 878 private static final int SWITCH_TO_SHORTPRESS = 3; 879 private static final int SWITCH_TO_LONGPRESS = 4; 880 private static final int RELEASE_SINGLE_TAP = 5; 881 private static final int REQUEST_FORM_DATA = 6; 882 private static final int DRAG_HELD_MOTIONLESS = 8; 883 private static final int AWAKEN_SCROLL_BARS = 9; 884 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 885 private static final int SCROLL_SELECT_TEXT = 11; 886 887 888 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 889 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 890 891 /* 892 * Package message ids 893 */ 894 static final int SCROLL_TO_MSG_ID = 101; 895 static final int NEW_PICTURE_MSG_ID = 105; 896 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 897 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 898 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 899 static final int UPDATE_ZOOM_RANGE = 109; 900 static final int UNHANDLED_NAV_KEY = 110; 901 static final int CLEAR_TEXT_ENTRY = 111; 902 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 903 static final int SHOW_RECT_MSG_ID = 113; 904 static final int LONG_PRESS_CENTER = 114; 905 static final int PREVENT_TOUCH_ID = 115; 906 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 907 // obj=Rect in doc coordinates 908 static final int INVAL_RECT_MSG_ID = 117; 909 static final int REQUEST_KEYBOARD = 118; 910 static final int DO_MOTION_UP = 119; 911 static final int SHOW_FULLSCREEN = 120; 912 static final int HIDE_FULLSCREEN = 121; 913 static final int DOM_FOCUS_CHANGED = 122; 914 static final int REPLACE_BASE_CONTENT = 123; 915 static final int FORM_DID_BLUR = 124; 916 static final int RETURN_LABEL = 125; 917 static final int FIND_AGAIN = 126; 918 static final int CENTER_FIT_RECT = 127; 919 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 920 static final int SET_SCROLLBAR_MODES = 129; 921 static final int SELECTION_STRING_CHANGED = 130; 922 static final int HIT_TEST_RESULT = 131; 923 static final int SAVE_WEBARCHIVE_FINISHED = 132; 924 925 static final int SET_AUTOFILLABLE = 133; 926 static final int AUTOFILL_COMPLETE = 134; 927 928 static final int SELECT_AT = 135; 929 static final int SCREEN_ON = 136; 930 static final int ENTER_FULLSCREEN_VIDEO = 137; 931 static final int UPDATE_SELECTION = 138; 932 static final int UPDATE_ZOOM_DENSITY = 139; 933 static final int EXIT_FULLSCREEN_VIDEO = 140; 934 935 static final int COPY_TO_CLIPBOARD = 141; 936 static final int INIT_EDIT_FIELD = 142; 937 static final int REPLACE_TEXT = 143; 938 939 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 940 private static final int LAST_PACKAGE_MSG_ID = HIT_TEST_RESULT; 941 942 static final String[] HandlerPrivateDebugString = { 943 "REMEMBER_PASSWORD", // = 1; 944 "NEVER_REMEMBER_PASSWORD", // = 2; 945 "SWITCH_TO_SHORTPRESS", // = 3; 946 "SWITCH_TO_LONGPRESS", // = 4; 947 "RELEASE_SINGLE_TAP", // = 5; 948 "REQUEST_FORM_DATA", // = 6; 949 "RESUME_WEBCORE_PRIORITY", // = 7; 950 "DRAG_HELD_MOTIONLESS", // = 8; 951 "AWAKEN_SCROLL_BARS", // = 9; 952 "PREVENT_DEFAULT_TIMEOUT", // = 10; 953 "SCROLL_SELECT_TEXT" // = 11; 954 }; 955 956 static final String[] HandlerPackageDebugString = { 957 "SCROLL_TO_MSG_ID", // = 101; 958 "102", // = 102; 959 "103", // = 103; 960 "104", // = 104; 961 "NEW_PICTURE_MSG_ID", // = 105; 962 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 963 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 964 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 965 "UPDATE_ZOOM_RANGE", // = 109; 966 "UNHANDLED_NAV_KEY", // = 110; 967 "CLEAR_TEXT_ENTRY", // = 111; 968 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 969 "SHOW_RECT_MSG_ID", // = 113; 970 "LONG_PRESS_CENTER", // = 114; 971 "PREVENT_TOUCH_ID", // = 115; 972 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 973 "INVAL_RECT_MSG_ID", // = 117; 974 "REQUEST_KEYBOARD", // = 118; 975 "DO_MOTION_UP", // = 119; 976 "SHOW_FULLSCREEN", // = 120; 977 "HIDE_FULLSCREEN", // = 121; 978 "DOM_FOCUS_CHANGED", // = 122; 979 "REPLACE_BASE_CONTENT", // = 123; 980 "FORM_DID_BLUR", // = 124; 981 "RETURN_LABEL", // = 125; 982 "FIND_AGAIN", // = 126; 983 "CENTER_FIT_RECT", // = 127; 984 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 985 "SET_SCROLLBAR_MODES", // = 129; 986 "SELECTION_STRING_CHANGED", // = 130; 987 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 988 "SAVE_WEBARCHIVE_FINISHED", // = 132; 989 "SET_AUTOFILLABLE", // = 133; 990 "AUTOFILL_COMPLETE", // = 134; 991 "SELECT_AT", // = 135; 992 "SCREEN_ON", // = 136; 993 "ENTER_FULLSCREEN_VIDEO", // = 137; 994 "UPDATE_SELECTION", // = 138; 995 "UPDATE_ZOOM_DENSITY" // = 139; 996 }; 997 998 // If the site doesn't use the viewport meta tag to specify the viewport, 999 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 1000 static final int DEFAULT_VIEWPORT_WIDTH = 980; 1001 1002 // normally we try to fit the content to the minimum preferred width 1003 // calculated by the Webkit. To avoid the bad behavior when some site's 1004 // minimum preferred width keeps growing when changing the viewport width or 1005 // the minimum preferred width is huge, an upper limit is needed. 1006 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 1007 1008 // initial scale in percent. 0 means using default. 1009 private int mInitialScaleInPercent = 0; 1010 1011 // Whether or not a scroll event should be sent to webkit. This is only set 1012 // to false when restoring the scroll position. 1013 private boolean mSendScrollEvent = true; 1014 1015 private int mSnapScrollMode = SNAP_NONE; 1016 private static final int SNAP_NONE = 0; 1017 private static final int SNAP_LOCK = 1; // not a separate state 1018 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 1019 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 1020 private boolean mSnapPositive; 1021 1022 // keep these in sync with their counterparts in WebView.cpp 1023 private static final int DRAW_EXTRAS_NONE = 0; 1024 private static final int DRAW_EXTRAS_FIND = 1; 1025 private static final int DRAW_EXTRAS_SELECTION = 2; 1026 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 1027 1028 // keep this in sync with WebCore:ScrollbarMode in WebKit 1029 private static final int SCROLLBAR_AUTO = 0; 1030 private static final int SCROLLBAR_ALWAYSOFF = 1; 1031 // as we auto fade scrollbar, this is ignored. 1032 private static final int SCROLLBAR_ALWAYSON = 2; 1033 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 1034 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 1035 1036 // constants for determining script injection strategy 1037 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 1038 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 1039 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 1040 1041 // the alias via which accessibility JavaScript interface is exposed 1042 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 1043 1044 // Template for JavaScript that injects a screen-reader. 1045 private static final String ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE = 1046 "javascript:(function() {" + 1047 " var chooser = document.createElement('script');" + 1048 " chooser.type = 'text/javascript';" + 1049 " chooser.src = '%1s';" + 1050 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 1051 " })();"; 1052 1053 // Regular expression that matches the "axs" URL parameter. 1054 // The value of 0 means the accessibility script is opted out 1055 // The value of 1 means the accessibility script is already injected 1056 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 1057 1058 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 1059 private TextToSpeech mTextToSpeech; 1060 1061 // variable to cache the above pattern in case accessibility is enabled. 1062 private Pattern mMatchAxsUrlParameterPattern; 1063 1064 /** 1065 * Max distance to overscroll by in pixels. 1066 * This how far content can be pulled beyond its normal bounds by the user. 1067 */ 1068 private int mOverscrollDistance; 1069 1070 /** 1071 * Max distance to overfling by in pixels. 1072 * This is how far flinged content can move beyond the end of its normal bounds. 1073 */ 1074 private int mOverflingDistance; 1075 1076 private OverScrollGlow mOverScrollGlow; 1077 1078 // Used to match key downs and key ups 1079 private Vector<Integer> mKeysPressed; 1080 1081 /* package */ static boolean mLogEvent = true; 1082 1083 // for event log 1084 private long mLastTouchUpTime = 0; 1085 1086 private WebViewCore.AutoFillData mAutoFillData; 1087 1088 private static boolean sNotificationsEnabled = true; 1089 1090 /** 1091 * URI scheme for telephone number 1092 */ 1093 public static final String SCHEME_TEL = "tel:"; 1094 /** 1095 * URI scheme for email address 1096 */ 1097 public static final String SCHEME_MAILTO = "mailto:"; 1098 /** 1099 * URI scheme for map address 1100 */ 1101 public static final String SCHEME_GEO = "geo:0,0?q="; 1102 1103 private int mBackgroundColor = Color.WHITE; 1104 1105 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 1106 private int mAutoScrollX = 0; 1107 private int mAutoScrollY = 0; 1108 private int mMinAutoScrollX = 0; 1109 private int mMaxAutoScrollX = 0; 1110 private int mMinAutoScrollY = 0; 1111 private int mMaxAutoScrollY = 0; 1112 private Rect mScrollingLayerBounds = new Rect(); 1113 private boolean mSentAutoScrollMessage = false; 1114 1115 // used for serializing asynchronously handled touch events. 1116 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 1117 1118 // Used to track whether picture updating was paused due to a window focus change. 1119 private boolean mPictureUpdatePausedForFocusChange = false; 1120 1121 // Used to notify listeners of a new picture. 1122 private PictureListener mPictureListener; 1123 /** 1124 * Interface to listen for new pictures as they change. 1125 * @deprecated This interface is now obsolete. 1126 */ 1127 @Deprecated 1128 public interface PictureListener { 1129 /** 1130 * Notify the listener that the picture has changed. 1131 * @param view The WebView that owns the picture. 1132 * @param picture The new picture. 1133 * @deprecated Due to internal changes, the picture does not include 1134 * composited layers such as fixed position elements or scrollable divs. 1135 * While the PictureListener API can still be used to detect changes in 1136 * the WebView content, you are advised against its usage until a replacement 1137 * is provided in a future Android release 1138 */ 1139 @Deprecated 1140 public void onNewPicture(WebView view, Picture picture); 1141 } 1142 1143 public static class HitTestResult { 1144 /** 1145 * Default HitTestResult, where the target is unknown 1146 */ 1147 public static final int UNKNOWN_TYPE = 0; 1148 /** 1149 * @deprecated This type is no longer used. 1150 */ 1151 @Deprecated 1152 public static final int ANCHOR_TYPE = 1; 1153 /** 1154 * HitTestResult for hitting a phone number 1155 */ 1156 public static final int PHONE_TYPE = 2; 1157 /** 1158 * HitTestResult for hitting a map address 1159 */ 1160 public static final int GEO_TYPE = 3; 1161 /** 1162 * HitTestResult for hitting an email address 1163 */ 1164 public static final int EMAIL_TYPE = 4; 1165 /** 1166 * HitTestResult for hitting an HTML::img tag 1167 */ 1168 public static final int IMAGE_TYPE = 5; 1169 /** 1170 * @deprecated This type is no longer used. 1171 */ 1172 @Deprecated 1173 public static final int IMAGE_ANCHOR_TYPE = 6; 1174 /** 1175 * HitTestResult for hitting a HTML::a tag with src=http 1176 */ 1177 public static final int SRC_ANCHOR_TYPE = 7; 1178 /** 1179 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 1180 */ 1181 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 1182 /** 1183 * HitTestResult for hitting an edit text area 1184 */ 1185 public static final int EDIT_TEXT_TYPE = 9; 1186 1187 private int mType; 1188 private String mExtra; 1189 1190 HitTestResult() { 1191 mType = UNKNOWN_TYPE; 1192 } 1193 1194 private void setType(int type) { 1195 mType = type; 1196 } 1197 1198 private void setExtra(String extra) { 1199 mExtra = extra; 1200 } 1201 1202 /** 1203 * Gets the type of the hit test result. 1204 * @return See the XXX_TYPE constants defined in this class. 1205 */ 1206 public int getType() { 1207 return mType; 1208 } 1209 1210 /** 1211 * Gets additional type-dependant information about the result, see 1212 * {@link WebView#getHitTestResult()} for details. 1213 * @return may either be null or contain extra information about this result. 1214 */ 1215 public String getExtra() { 1216 return mExtra; 1217 } 1218 } 1219 1220 /** 1221 * Refer to {@link WebView#requestFocusNodeHref(Message)} for more information 1222 */ 1223 static class FocusNodeHref { 1224 static final String TITLE = "title"; 1225 static final String URL = "url"; 1226 static final String SRC = "src"; 1227 } 1228 1229 /** 1230 * Construct a new WebView with a Context object. 1231 * @param context A Context object used to access application assets. 1232 */ 1233 public WebView(Context context) { 1234 this(context, null); 1235 } 1236 1237 /** 1238 * Construct a new WebView with layout parameters. 1239 * @param context A Context object used to access application assets. 1240 * @param attrs An AttributeSet passed to our parent. 1241 */ 1242 public WebView(Context context, AttributeSet attrs) { 1243 this(context, attrs, com.android.internal.R.attr.webViewStyle); 1244 } 1245 1246 /** 1247 * Construct a new WebView with layout parameters and a default style. 1248 * @param context A Context object used to access application assets. 1249 * @param attrs An AttributeSet passed to our parent. 1250 * @param defStyle The default style resource ID. 1251 */ 1252 public WebView(Context context, AttributeSet attrs, int defStyle) { 1253 this(context, attrs, defStyle, false); 1254 } 1255 1256 /** 1257 * Construct a new WebView with layout parameters and a default style. 1258 * @param context A Context object used to access application assets. 1259 * @param attrs An AttributeSet passed to our parent. 1260 * @param defStyle The default style resource ID. 1261 * @param privateBrowsing If true the web view will be initialized in private mode. 1262 */ 1263 public WebView(Context context, AttributeSet attrs, int defStyle, 1264 boolean privateBrowsing) { 1265 this(context, attrs, defStyle, null, privateBrowsing); 1266 } 1267 1268 /** 1269 * Construct a new WebView with layout parameters, a default style and a set 1270 * of custom Javscript interfaces to be added to the WebView at initialization 1271 * time. This guarantees that these interfaces will be available when the JS 1272 * context is initialized. 1273 * @param context A Context object used to access application assets. 1274 * @param attrs An AttributeSet passed to our parent. 1275 * @param defStyle The default style resource ID. 1276 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1277 * object implementing those interfaces, as values. 1278 * @param privateBrowsing If true the web view will be initialized in private mode. 1279 * @hide This is an implementation detail. 1280 */ 1281 protected WebView(Context context, AttributeSet attrs, int defStyle, 1282 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1283 super(context, attrs, defStyle); 1284 checkThread(); 1285 1286 if (context == null) { 1287 throw new IllegalArgumentException("Invalid context argument"); 1288 } 1289 1290 // Used by the chrome stack to find application paths 1291 JniUtil.setContext(context); 1292 1293 mCallbackProxy = new CallbackProxy(context, this); 1294 mViewManager = new ViewManager(this); 1295 L10nUtils.setApplicationContext(context.getApplicationContext()); 1296 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1297 mDatabase = WebViewDatabase.getInstance(context); 1298 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1299 mZoomManager = new ZoomManager(this, mCallbackProxy); 1300 1301 /* The init method must follow the creation of certain member variables, 1302 * such as the mZoomManager. 1303 */ 1304 init(); 1305 setupPackageListener(context); 1306 setupProxyListener(context); 1307 setupTrustStorageListener(context); 1308 updateMultiTouchSupport(context); 1309 1310 if (privateBrowsing) { 1311 startPrivateBrowsing(); 1312 } 1313 1314 mAutoFillData = new WebViewCore.AutoFillData(); 1315 } 1316 1317 private static class TrustStorageListener extends BroadcastReceiver { 1318 @Override 1319 public void onReceive(Context context, Intent intent) { 1320 if (intent.getAction().equals(KeyChain.ACTION_STORAGE_CHANGED)) { 1321 handleCertTrustChanged(); 1322 } 1323 } 1324 } 1325 private static TrustStorageListener sTrustStorageListener; 1326 1327 /** 1328 * Handles update to the trust storage. 1329 */ 1330 private static void handleCertTrustChanged() { 1331 // send a message for indicating trust storage change 1332 WebViewCore.sendStaticMessage(EventHub.TRUST_STORAGE_UPDATED, null); 1333 } 1334 1335 /* 1336 * @param context This method expects this to be a valid context. 1337 */ 1338 private static void setupTrustStorageListener(Context context) { 1339 if (sTrustStorageListener != null ) { 1340 return; 1341 } 1342 IntentFilter filter = new IntentFilter(); 1343 filter.addAction(KeyChain.ACTION_STORAGE_CHANGED); 1344 sTrustStorageListener = new TrustStorageListener(); 1345 Intent current = 1346 context.getApplicationContext().registerReceiver(sTrustStorageListener, filter); 1347 if (current != null) { 1348 handleCertTrustChanged(); 1349 } 1350 } 1351 1352 private static class ProxyReceiver extends BroadcastReceiver { 1353 @Override 1354 public void onReceive(Context context, Intent intent) { 1355 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1356 handleProxyBroadcast(intent); 1357 } 1358 } 1359 } 1360 1361 /* 1362 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1363 */ 1364 private static ProxyReceiver sProxyReceiver; 1365 1366 /* 1367 * @param context This method expects this to be a valid context 1368 */ 1369 private static synchronized void setupProxyListener(Context context) { 1370 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1371 return; 1372 } 1373 IntentFilter filter = new IntentFilter(); 1374 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1375 sProxyReceiver = new ProxyReceiver(); 1376 Intent currentProxy = context.getApplicationContext().registerReceiver( 1377 sProxyReceiver, filter); 1378 if (currentProxy != null) { 1379 handleProxyBroadcast(currentProxy); 1380 } 1381 } 1382 1383 /* 1384 * @param context This method expects this to be a valid context 1385 */ 1386 private static synchronized void disableProxyListener(Context context) { 1387 if (sProxyReceiver == null) 1388 return; 1389 1390 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1391 sProxyReceiver = null; 1392 } 1393 1394 private static void handleProxyBroadcast(Intent intent) { 1395 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1396 if (proxyProperties == null || proxyProperties.getHost() == null) { 1397 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1398 return; 1399 } 1400 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1401 } 1402 1403 /* 1404 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1405 * or ACTION_PACKAGE_REMOVED. 1406 */ 1407 private static boolean sPackageInstallationReceiverAdded = false; 1408 1409 /* 1410 * A set of Google packages we monitor for the 1411 * navigator.isApplicationInstalled() API. Add additional packages as 1412 * needed. 1413 */ 1414 private static Set<String> sGoogleApps; 1415 static { 1416 sGoogleApps = new HashSet<String>(); 1417 sGoogleApps.add("com.google.android.youtube"); 1418 } 1419 1420 private static class PackageListener extends BroadcastReceiver { 1421 @Override 1422 public void onReceive(Context context, Intent intent) { 1423 final String action = intent.getAction(); 1424 final String packageName = intent.getData().getSchemeSpecificPart(); 1425 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1426 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1427 // if it is replacing, refreshPlugins() when adding 1428 return; 1429 } 1430 1431 if (sGoogleApps.contains(packageName)) { 1432 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1433 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1434 } else { 1435 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1436 } 1437 } 1438 1439 PluginManager pm = PluginManager.getInstance(context); 1440 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1441 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1442 } 1443 } 1444 } 1445 1446 private void setupPackageListener(Context context) { 1447 1448 /* 1449 * we must synchronize the instance check and the creation of the 1450 * receiver to ensure that only ONE receiver exists for all WebView 1451 * instances. 1452 */ 1453 synchronized (WebView.class) { 1454 1455 // if the receiver already exists then we do not need to register it 1456 // again 1457 if (sPackageInstallationReceiverAdded) { 1458 return; 1459 } 1460 1461 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1462 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1463 filter.addDataScheme("package"); 1464 BroadcastReceiver packageListener = new PackageListener(); 1465 context.getApplicationContext().registerReceiver(packageListener, filter); 1466 sPackageInstallationReceiverAdded = true; 1467 } 1468 1469 // check if any of the monitored apps are already installed 1470 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1471 1472 @Override 1473 protected Set<String> doInBackground(Void... unused) { 1474 Set<String> installedPackages = new HashSet<String>(); 1475 PackageManager pm = mContext.getPackageManager(); 1476 for (String name : sGoogleApps) { 1477 try { 1478 pm.getPackageInfo(name, 1479 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1480 installedPackages.add(name); 1481 } catch (PackageManager.NameNotFoundException e) { 1482 // package not found 1483 } 1484 } 1485 return installedPackages; 1486 } 1487 1488 // Executes on the UI thread 1489 @Override 1490 protected void onPostExecute(Set<String> installedPackages) { 1491 if (mWebViewCore != null) { 1492 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1493 } 1494 } 1495 }; 1496 task.execute(); 1497 } 1498 1499 void updateMultiTouchSupport(Context context) { 1500 mZoomManager.updateMultiTouchSupport(context); 1501 } 1502 1503 private void init() { 1504 OnTrimMemoryListener.init(getContext()); 1505 sDisableNavcache = nativeDisableNavcache(); 1506 setWillNotDraw(false); 1507 setFocusable(true); 1508 setFocusableInTouchMode(true); 1509 setClickable(true); 1510 setLongClickable(true); 1511 1512 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1513 int slop = configuration.getScaledTouchSlop(); 1514 mTouchSlopSquare = slop * slop; 1515 slop = configuration.getScaledDoubleTapSlop(); 1516 mDoubleTapSlopSquare = slop * slop; 1517 final float density = getContext().getResources().getDisplayMetrics().density; 1518 // use one line height, 16 based on our current default font, for how 1519 // far we allow a touch be away from the edge of a link 1520 mNavSlop = (int) (16 * density); 1521 mZoomManager.init(density); 1522 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1523 1524 // Compute the inverse of the density squared. 1525 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1526 1527 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1528 mOverflingDistance = configuration.getScaledOverflingDistance(); 1529 1530 setScrollBarStyle(super.getScrollBarStyle()); 1531 // Initially use a size of two, since the user is likely to only hold 1532 // down two keys at a time (shift + another key) 1533 mKeysPressed = new Vector<Integer>(2); 1534 mHTML5VideoViewProxy = null ; 1535 } 1536 1537 @Override 1538 public boolean shouldDelayChildPressedState() { 1539 return true; 1540 } 1541 1542 /** 1543 * Adds accessibility APIs to JavaScript. 1544 * 1545 * Note: This method is responsible to performing the necessary 1546 * check if the accessibility APIs should be exposed. 1547 */ 1548 private void addAccessibilityApisToJavaScript() { 1549 if (AccessibilityManager.getInstance(mContext).isEnabled() 1550 && getSettings().getJavaScriptEnabled()) { 1551 // exposing the TTS for now ... 1552 final Context ctx = getContext(); 1553 if (ctx != null) { 1554 final String packageName = ctx.getPackageName(); 1555 if (packageName != null) { 1556 mTextToSpeech = new TextToSpeech(getContext(), null, null, 1557 packageName + ".**webview**", true); 1558 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1559 } 1560 } 1561 } 1562 } 1563 1564 /** 1565 * Removes accessibility APIs from JavaScript. 1566 */ 1567 private void removeAccessibilityApisFromJavaScript() { 1568 // exposing the TTS for now ... 1569 if (mTextToSpeech != null) { 1570 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1571 mTextToSpeech.shutdown(); 1572 mTextToSpeech = null; 1573 } 1574 } 1575 1576 @Override 1577 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 1578 super.onInitializeAccessibilityNodeInfo(info); 1579 info.setScrollable(isScrollableForAccessibility()); 1580 } 1581 1582 @Override 1583 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 1584 super.onInitializeAccessibilityEvent(event); 1585 event.setScrollable(isScrollableForAccessibility()); 1586 event.setScrollX(mScrollX); 1587 event.setScrollY(mScrollY); 1588 final int convertedContentWidth = contentToViewX(getContentWidth()); 1589 final int adjustedViewWidth = getWidth() - mPaddingLeft - mPaddingRight; 1590 event.setMaxScrollX(Math.max(convertedContentWidth - adjustedViewWidth, 0)); 1591 final int convertedContentHeight = contentToViewY(getContentHeight()); 1592 final int adjustedViewHeight = getHeight() - mPaddingTop - mPaddingBottom; 1593 event.setMaxScrollY(Math.max(convertedContentHeight - adjustedViewHeight, 0)); 1594 } 1595 1596 private boolean isScrollableForAccessibility() { 1597 return (contentToViewX(getContentWidth()) > getWidth() - mPaddingLeft - mPaddingRight 1598 || contentToViewY(getContentHeight()) > getHeight() - mPaddingTop - mPaddingBottom); 1599 } 1600 1601 @Override 1602 public void setOverScrollMode(int mode) { 1603 super.setOverScrollMode(mode); 1604 if (mode != OVER_SCROLL_NEVER) { 1605 if (mOverScrollGlow == null) { 1606 mOverScrollGlow = new OverScrollGlow(this); 1607 } 1608 } else { 1609 mOverScrollGlow = null; 1610 } 1611 } 1612 1613 /* package */ void adjustDefaultZoomDensity(int zoomDensity) { 1614 final float density = mContext.getResources().getDisplayMetrics().density 1615 * 100 / zoomDensity; 1616 updateDefaultZoomDensity(density); 1617 } 1618 1619 /* package */ void updateDefaultZoomDensity(float density) { 1620 mNavSlop = (int) (16 * density); 1621 mZoomManager.updateDefaultZoomDensity(density); 1622 } 1623 1624 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1625 String password, final Message resumeMsg) { 1626 boolean rVal = false; 1627 if (resumeMsg == null) { 1628 // null resumeMsg implies saving password silently 1629 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1630 } else { 1631 final Message remember = mPrivateHandler.obtainMessage( 1632 REMEMBER_PASSWORD); 1633 remember.getData().putString("host", schemePlusHost); 1634 remember.getData().putString("username", username); 1635 remember.getData().putString("password", password); 1636 remember.obj = resumeMsg; 1637 1638 final Message neverRemember = mPrivateHandler.obtainMessage( 1639 NEVER_REMEMBER_PASSWORD); 1640 neverRemember.getData().putString("host", schemePlusHost); 1641 neverRemember.getData().putString("username", username); 1642 neverRemember.getData().putString("password", password); 1643 neverRemember.obj = resumeMsg; 1644 1645 new AlertDialog.Builder(getContext()) 1646 .setTitle(com.android.internal.R.string.save_password_label) 1647 .setMessage(com.android.internal.R.string.save_password_message) 1648 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1649 new DialogInterface.OnClickListener() { 1650 @Override 1651 public void onClick(DialogInterface dialog, int which) { 1652 resumeMsg.sendToTarget(); 1653 } 1654 }) 1655 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1656 new DialogInterface.OnClickListener() { 1657 @Override 1658 public void onClick(DialogInterface dialog, int which) { 1659 remember.sendToTarget(); 1660 } 1661 }) 1662 .setNegativeButton(com.android.internal.R.string.save_password_never, 1663 new DialogInterface.OnClickListener() { 1664 @Override 1665 public void onClick(DialogInterface dialog, int which) { 1666 neverRemember.sendToTarget(); 1667 } 1668 }) 1669 .setOnCancelListener(new OnCancelListener() { 1670 @Override 1671 public void onCancel(DialogInterface dialog) { 1672 resumeMsg.sendToTarget(); 1673 } 1674 }).show(); 1675 // Return true so that WebViewCore will pause while the dialog is 1676 // up. 1677 rVal = true; 1678 } 1679 return rVal; 1680 } 1681 1682 @Override 1683 public void setScrollBarStyle(int style) { 1684 if (style == View.SCROLLBARS_INSIDE_INSET 1685 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1686 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1687 } else { 1688 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1689 } 1690 super.setScrollBarStyle(style); 1691 } 1692 1693 /** 1694 * Specify whether the horizontal scrollbar has overlay style. 1695 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1696 */ 1697 public void setHorizontalScrollbarOverlay(boolean overlay) { 1698 checkThread(); 1699 mOverlayHorizontalScrollbar = overlay; 1700 } 1701 1702 /** 1703 * Specify whether the vertical scrollbar has overlay style. 1704 * @param overlay TRUE if vertical scrollbar should have overlay style. 1705 */ 1706 public void setVerticalScrollbarOverlay(boolean overlay) { 1707 checkThread(); 1708 mOverlayVerticalScrollbar = overlay; 1709 } 1710 1711 /** 1712 * Return whether horizontal scrollbar has overlay style 1713 * @return TRUE if horizontal scrollbar has overlay style. 1714 */ 1715 public boolean overlayHorizontalScrollbar() { 1716 checkThread(); 1717 return mOverlayHorizontalScrollbar; 1718 } 1719 1720 /** 1721 * Return whether vertical scrollbar has overlay style 1722 * @return TRUE if vertical scrollbar has overlay style. 1723 */ 1724 public boolean overlayVerticalScrollbar() { 1725 checkThread(); 1726 return mOverlayVerticalScrollbar; 1727 } 1728 1729 /* 1730 * Return the width of the view where the content of WebView should render 1731 * to. 1732 * Note: this can be called from WebCoreThread. 1733 */ 1734 /* package */ int getViewWidth() { 1735 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1736 return getWidth(); 1737 } else { 1738 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1739 } 1740 } 1741 1742 /** 1743 * returns the height of the titlebarview (if any). Does not care about 1744 * scrolling 1745 * @hide 1746 */ 1747 protected int getTitleHeight() { 1748 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1749 } 1750 1751 /** 1752 * Return the amount of the titlebarview (if any) that is visible 1753 * 1754 * @deprecated This method is now obsolete. 1755 */ 1756 @Deprecated 1757 public int getVisibleTitleHeight() { 1758 checkThread(); 1759 return getVisibleTitleHeightImpl(); 1760 } 1761 1762 private int getVisibleTitleHeightImpl() { 1763 // need to restrict mScrollY due to over scroll 1764 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 1765 getOverlappingActionModeHeight()); 1766 } 1767 1768 private int mCachedOverlappingActionModeHeight = -1; 1769 1770 private int getOverlappingActionModeHeight() { 1771 if (mFindCallback == null) { 1772 return 0; 1773 } 1774 if (mCachedOverlappingActionModeHeight < 0) { 1775 getGlobalVisibleRect(mGlobalVisibleRect, mGlobalVisibleOffset); 1776 mCachedOverlappingActionModeHeight = Math.max(0, 1777 mFindCallback.getActionModeGlobalBottom() - mGlobalVisibleRect.top); 1778 } 1779 return mCachedOverlappingActionModeHeight; 1780 } 1781 1782 /* 1783 * Return the height of the view where the content of WebView should render 1784 * to. Note that this excludes mTitleBar, if there is one. 1785 * Note: this can be called from WebCoreThread. 1786 */ 1787 /* package */ int getViewHeight() { 1788 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1789 } 1790 1791 int getViewHeightWithTitle() { 1792 int height = getHeight(); 1793 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1794 height -= getHorizontalScrollbarHeight(); 1795 } 1796 return height; 1797 } 1798 1799 /** 1800 * @return The SSL certificate for the main top-level page or null if 1801 * there is no certificate (the site is not secure). 1802 */ 1803 public SslCertificate getCertificate() { 1804 checkThread(); 1805 return mCertificate; 1806 } 1807 1808 /** 1809 * Sets the SSL certificate for the main top-level page. 1810 */ 1811 public void setCertificate(SslCertificate certificate) { 1812 checkThread(); 1813 if (DebugFlags.WEB_VIEW) { 1814 Log.v(LOGTAG, "setCertificate=" + certificate); 1815 } 1816 // here, the certificate can be null (if the site is not secure) 1817 mCertificate = certificate; 1818 } 1819 1820 //------------------------------------------------------------------------- 1821 // Methods called by activity 1822 //------------------------------------------------------------------------- 1823 1824 /** 1825 * Save the username and password for a particular host in the WebView's 1826 * internal database. 1827 * @param host The host that required the credentials. 1828 * @param username The username for the given host. 1829 * @param password The password for the given host. 1830 */ 1831 public void savePassword(String host, String username, String password) { 1832 checkThread(); 1833 mDatabase.setUsernamePassword(host, username, password); 1834 } 1835 1836 /** 1837 * Set the HTTP authentication credentials for a given host and realm. 1838 * 1839 * @param host The host for the credentials. 1840 * @param realm The realm for the credentials. 1841 * @param username The username for the password. If it is null, it means 1842 * password can't be saved. 1843 * @param password The password 1844 */ 1845 public void setHttpAuthUsernamePassword(String host, String realm, 1846 String username, String password) { 1847 checkThread(); 1848 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1849 } 1850 1851 /** 1852 * Retrieve the HTTP authentication username and password for a given 1853 * host & realm pair 1854 * 1855 * @param host The host for which the credentials apply. 1856 * @param realm The realm for which the credentials apply. 1857 * @return String[] if found, String[0] is username, which can be null and 1858 * String[1] is password. Return null if it can't find anything. 1859 */ 1860 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1861 checkThread(); 1862 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1863 } 1864 1865 /** 1866 * Remove Find or Select ActionModes, if active. 1867 */ 1868 private void clearActionModes() { 1869 if (mSelectCallback != null) { 1870 mSelectCallback.finish(); 1871 } 1872 if (mFindCallback != null) { 1873 mFindCallback.finish(); 1874 } 1875 } 1876 1877 /** 1878 * Called to clear state when moving from one page to another, or changing 1879 * in some other way that makes elements associated with the current page 1880 * (such as WebTextView or ActionModes) no longer relevant. 1881 */ 1882 private void clearHelpers() { 1883 clearTextEntry(); 1884 clearActionModes(); 1885 dismissFullScreenMode(); 1886 cancelSelectDialog(); 1887 } 1888 1889 private void cancelSelectDialog() { 1890 if (mListBoxDialog != null) { 1891 mListBoxDialog.cancel(); 1892 mListBoxDialog = null; 1893 } 1894 } 1895 1896 /** 1897 * Destroy the internal state of the WebView. This method should be called 1898 * after the WebView has been removed from the view system. No other 1899 * methods may be called on a WebView after destroy. 1900 */ 1901 public void destroy() { 1902 checkThread(); 1903 destroyImpl(); 1904 } 1905 1906 private void destroyImpl() { 1907 clearHelpers(); 1908 if (mListBoxDialog != null) { 1909 mListBoxDialog.dismiss(); 1910 mListBoxDialog = null; 1911 } 1912 // remove so that it doesn't cause events 1913 if (mWebTextView != null) { 1914 mWebTextView.remove(); 1915 mWebTextView = null; 1916 } 1917 if (mNativeClass != 0) nativeStopGL(); 1918 if (mWebViewCore != null) { 1919 // Set the handlers to null before destroying WebViewCore so no 1920 // more messages will be posted. 1921 mCallbackProxy.setWebViewClient(null); 1922 mCallbackProxy.setWebChromeClient(null); 1923 // Tell WebViewCore to destroy itself 1924 synchronized (this) { 1925 WebViewCore webViewCore = mWebViewCore; 1926 mWebViewCore = null; // prevent using partial webViewCore 1927 webViewCore.destroy(); 1928 } 1929 // Remove any pending messages that might not be serviced yet. 1930 mPrivateHandler.removeCallbacksAndMessages(null); 1931 mCallbackProxy.removeCallbacksAndMessages(null); 1932 // Wake up the WebCore thread just in case it is waiting for a 1933 // JavaScript dialog. 1934 synchronized (mCallbackProxy) { 1935 mCallbackProxy.notify(); 1936 } 1937 } 1938 if (mNativeClass != 0) { 1939 nativeDestroy(); 1940 mNativeClass = 0; 1941 } 1942 } 1943 1944 /** 1945 * Enables platform notifications of data state and proxy changes. 1946 * Notifications are enabled by default. 1947 * 1948 * @deprecated This method is now obsolete. 1949 */ 1950 @Deprecated 1951 public static void enablePlatformNotifications() { 1952 checkThread(); 1953 synchronized (WebView.class) { 1954 Network.enablePlatformNotifications(); 1955 sNotificationsEnabled = true; 1956 Context context = JniUtil.getContext(); 1957 if (context != null) 1958 setupProxyListener(context); 1959 } 1960 } 1961 1962 /** 1963 * Disables platform notifications of data state and proxy changes. 1964 * Notifications are enabled by default. 1965 * 1966 * @deprecated This method is now obsolete. 1967 */ 1968 @Deprecated 1969 public static void disablePlatformNotifications() { 1970 checkThread(); 1971 synchronized (WebView.class) { 1972 Network.disablePlatformNotifications(); 1973 sNotificationsEnabled = false; 1974 Context context = JniUtil.getContext(); 1975 if (context != null) 1976 disableProxyListener(context); 1977 } 1978 } 1979 1980 /** 1981 * Sets JavaScript engine flags. 1982 * 1983 * @param flags JS engine flags in a String 1984 * 1985 * @hide This is an implementation detail. 1986 */ 1987 public void setJsFlags(String flags) { 1988 checkThread(); 1989 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1990 } 1991 1992 /** 1993 * Inform WebView of the network state. This is used to set 1994 * the JavaScript property window.navigator.isOnline and 1995 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1996 * @param networkUp boolean indicating if network is available 1997 */ 1998 public void setNetworkAvailable(boolean networkUp) { 1999 checkThread(); 2000 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 2001 networkUp ? 1 : 0, 0); 2002 } 2003 2004 /** 2005 * Inform WebView about the current network type. 2006 * {@hide} 2007 */ 2008 public void setNetworkType(String type, String subtype) { 2009 checkThread(); 2010 Map<String, String> map = new HashMap<String, String>(); 2011 map.put("type", type); 2012 map.put("subtype", subtype); 2013 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 2014 } 2015 /** 2016 * Save the state of this WebView used in 2017 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 2018 * method no longer stores the display data for this WebView. The previous 2019 * behavior could potentially leak files if {@link #restoreState} was never 2020 * called. See {@link #savePicture} and {@link #restorePicture} for saving 2021 * and restoring the display data. 2022 * @param outState The Bundle to store the WebView state. 2023 * @return The same copy of the back/forward list used to save the state. If 2024 * saveState fails, the returned list will be null. 2025 * @see #savePicture 2026 * @see #restorePicture 2027 */ 2028 public WebBackForwardList saveState(Bundle outState) { 2029 checkThread(); 2030 if (outState == null) { 2031 return null; 2032 } 2033 // We grab a copy of the back/forward list because a client of WebView 2034 // may have invalidated the history list by calling clearHistory. 2035 WebBackForwardList list = copyBackForwardList(); 2036 final int currentIndex = list.getCurrentIndex(); 2037 final int size = list.getSize(); 2038 // We should fail saving the state if the list is empty or the index is 2039 // not in a valid range. 2040 if (currentIndex < 0 || currentIndex >= size || size == 0) { 2041 return null; 2042 } 2043 outState.putInt("index", currentIndex); 2044 // FIXME: This should just be a byte[][] instead of ArrayList but 2045 // Parcel.java does not have the code to handle multi-dimensional 2046 // arrays. 2047 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 2048 for (int i = 0; i < size; i++) { 2049 WebHistoryItem item = list.getItemAtIndex(i); 2050 if (null == item) { 2051 // FIXME: this shouldn't happen 2052 // need to determine how item got set to null 2053 Log.w(LOGTAG, "saveState: Unexpected null history item."); 2054 return null; 2055 } 2056 byte[] data = item.getFlattenedData(); 2057 if (data == null) { 2058 // It would be very odd to not have any data for a given history 2059 // item. And we will fail to rebuild the history list without 2060 // flattened data. 2061 return null; 2062 } 2063 history.add(data); 2064 } 2065 outState.putSerializable("history", history); 2066 if (mCertificate != null) { 2067 outState.putBundle("certificate", 2068 SslCertificate.saveState(mCertificate)); 2069 } 2070 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 2071 mZoomManager.saveZoomState(outState); 2072 return list; 2073 } 2074 2075 /** 2076 * Save the current display data to the Bundle given. Used in conjunction 2077 * with {@link #saveState}. 2078 * @param b A Bundle to store the display data. 2079 * @param dest The file to store the serialized picture data. Will be 2080 * overwritten with this WebView's picture data. 2081 * @return True if the picture was successfully saved. 2082 * @deprecated This method is now obsolete. 2083 */ 2084 @Deprecated 2085 public boolean savePicture(Bundle b, final File dest) { 2086 checkThread(); 2087 if (dest == null || b == null) { 2088 return false; 2089 } 2090 final Picture p = capturePicture(); 2091 // Use a temporary file while writing to ensure the destination file 2092 // contains valid data. 2093 final File temp = new File(dest.getPath() + ".writing"); 2094 new Thread(new Runnable() { 2095 @Override 2096 public void run() { 2097 FileOutputStream out = null; 2098 try { 2099 out = new FileOutputStream(temp); 2100 p.writeToStream(out); 2101 // Writing the picture succeeded, rename the temporary file 2102 // to the destination. 2103 temp.renameTo(dest); 2104 } catch (Exception e) { 2105 // too late to do anything about it. 2106 } finally { 2107 if (out != null) { 2108 try { 2109 out.close(); 2110 } catch (Exception e) { 2111 // Can't do anything about that 2112 } 2113 } 2114 temp.delete(); 2115 } 2116 } 2117 }).start(); 2118 // now update the bundle 2119 b.putInt("scrollX", mScrollX); 2120 b.putInt("scrollY", mScrollY); 2121 mZoomManager.saveZoomState(b); 2122 return true; 2123 } 2124 2125 private void restoreHistoryPictureFields(Picture p, Bundle b) { 2126 int sx = b.getInt("scrollX", 0); 2127 int sy = b.getInt("scrollY", 0); 2128 2129 mDrawHistory = true; 2130 mHistoryPicture = p; 2131 2132 mScrollX = sx; 2133 mScrollY = sy; 2134 mZoomManager.restoreZoomState(b); 2135 final float scale = mZoomManager.getScale(); 2136 mHistoryWidth = Math.round(p.getWidth() * scale); 2137 mHistoryHeight = Math.round(p.getHeight() * scale); 2138 2139 invalidate(); 2140 } 2141 2142 /** 2143 * Restore the display data that was save in {@link #savePicture}. Used in 2144 * conjunction with {@link #restoreState}. 2145 * 2146 * Note that this will not work if the WebView is hardware accelerated. 2147 * @param b A Bundle containing the saved display data. 2148 * @param src The file where the picture data was stored. 2149 * @return True if the picture was successfully restored. 2150 * @deprecated This method is now obsolete. 2151 */ 2152 @Deprecated 2153 public boolean restorePicture(Bundle b, File src) { 2154 checkThread(); 2155 if (src == null || b == null) { 2156 return false; 2157 } 2158 if (!src.exists()) { 2159 return false; 2160 } 2161 try { 2162 final FileInputStream in = new FileInputStream(src); 2163 final Bundle copy = new Bundle(b); 2164 new Thread(new Runnable() { 2165 @Override 2166 public void run() { 2167 try { 2168 final Picture p = Picture.createFromStream(in); 2169 if (p != null) { 2170 // Post a runnable on the main thread to update the 2171 // history picture fields. 2172 mPrivateHandler.post(new Runnable() { 2173 @Override 2174 public void run() { 2175 restoreHistoryPictureFields(p, copy); 2176 } 2177 }); 2178 } 2179 } finally { 2180 try { 2181 in.close(); 2182 } catch (Exception e) { 2183 // Nothing we can do now. 2184 } 2185 } 2186 } 2187 }).start(); 2188 } catch (FileNotFoundException e){ 2189 e.printStackTrace(); 2190 } 2191 return true; 2192 } 2193 2194 /** 2195 * Saves the view data to the output stream. The output is highly 2196 * version specific, and may not be able to be loaded by newer versions 2197 * of WebView. 2198 * @param stream The {@link OutputStream} to save to 2199 * @return True if saved successfully 2200 * @hide 2201 */ 2202 public boolean saveViewState(OutputStream stream) { 2203 try { 2204 return ViewStateSerializer.serializeViewState(stream, this); 2205 } catch (IOException e) { 2206 Log.w(LOGTAG, "Failed to saveViewState", e); 2207 } 2208 return false; 2209 } 2210 2211 /** 2212 * Loads the view data from the input stream. See 2213 * {@link #saveViewState(OutputStream)} for more information. 2214 * @param stream The {@link InputStream} to load from 2215 * @return True if loaded successfully 2216 * @hide 2217 */ 2218 public boolean loadViewState(InputStream stream) { 2219 try { 2220 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 2221 mBlockWebkitViewMessages = true; 2222 setNewPicture(mLoadedPicture, true); 2223 mLoadedPicture.mViewState = null; 2224 return true; 2225 } catch (IOException e) { 2226 Log.w(LOGTAG, "Failed to loadViewState", e); 2227 } 2228 return false; 2229 } 2230 2231 /** 2232 * Clears the view state set with {@link #loadViewState(InputStream)}. 2233 * This WebView will then switch to showing the content from webkit 2234 * @hide 2235 */ 2236 public void clearViewState() { 2237 mBlockWebkitViewMessages = false; 2238 mLoadedPicture = null; 2239 invalidate(); 2240 } 2241 2242 /** 2243 * Restore the state of this WebView from the given map used in 2244 * {@link android.app.Activity#onRestoreInstanceState}. This method should 2245 * be called to restore the state of the WebView before using the object. If 2246 * it is called after the WebView has had a chance to build state (load 2247 * pages, create a back/forward list, etc.) there may be undesirable 2248 * side-effects. Please note that this method no longer restores the 2249 * display data for this WebView. See {@link #savePicture} and {@link 2250 * #restorePicture} for saving and restoring the display data. 2251 * @param inState The incoming Bundle of state. 2252 * @return The restored back/forward list or null if restoreState failed. 2253 * @see #savePicture 2254 * @see #restorePicture 2255 */ 2256 public WebBackForwardList restoreState(Bundle inState) { 2257 checkThread(); 2258 WebBackForwardList returnList = null; 2259 if (inState == null) { 2260 return returnList; 2261 } 2262 if (inState.containsKey("index") && inState.containsKey("history")) { 2263 mCertificate = SslCertificate.restoreState( 2264 inState.getBundle("certificate")); 2265 2266 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 2267 final int index = inState.getInt("index"); 2268 // We can't use a clone of the list because we need to modify the 2269 // shared copy, so synchronize instead to prevent concurrent 2270 // modifications. 2271 synchronized (list) { 2272 final List<byte[]> history = 2273 (List<byte[]>) inState.getSerializable("history"); 2274 final int size = history.size(); 2275 // Check the index bounds so we don't crash in native code while 2276 // restoring the history index. 2277 if (index < 0 || index >= size) { 2278 return null; 2279 } 2280 for (int i = 0; i < size; i++) { 2281 byte[] data = history.remove(0); 2282 if (data == null) { 2283 // If we somehow have null data, we cannot reconstruct 2284 // the item and thus our history list cannot be rebuilt. 2285 return null; 2286 } 2287 WebHistoryItem item = new WebHistoryItem(data); 2288 list.addHistoryItem(item); 2289 } 2290 // Grab the most recent copy to return to the caller. 2291 returnList = copyBackForwardList(); 2292 // Update the copy to have the correct index. 2293 returnList.setCurrentIndex(index); 2294 } 2295 // Restore private browsing setting. 2296 if (inState.getBoolean("privateBrowsingEnabled")) { 2297 getSettings().setPrivateBrowsingEnabled(true); 2298 } 2299 mZoomManager.restoreZoomState(inState); 2300 // Remove all pending messages because we are restoring previous 2301 // state. 2302 mWebViewCore.removeMessages(); 2303 // Send a restore state message. 2304 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 2305 } 2306 return returnList; 2307 } 2308 2309 /** 2310 * Load the given URL with the specified additional HTTP headers. 2311 * @param url The URL of the resource to load. 2312 * @param additionalHttpHeaders The additional headers to be used in the 2313 * HTTP request for this URL, specified as a map from name to 2314 * value. Note that if this map contains any of the headers 2315 * that are set by default by the WebView, such as those 2316 * controlling caching, accept types or the User-Agent, their 2317 * values may be overriden by the WebView's defaults. 2318 */ 2319 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 2320 checkThread(); 2321 loadUrlImpl(url, additionalHttpHeaders); 2322 } 2323 2324 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 2325 switchOutDrawHistory(); 2326 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 2327 arg.mUrl = url; 2328 arg.mExtraHeaders = extraHeaders; 2329 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 2330 clearHelpers(); 2331 } 2332 2333 /** 2334 * Load the given URL. 2335 * @param url The URL of the resource to load. 2336 */ 2337 public void loadUrl(String url) { 2338 checkThread(); 2339 loadUrlImpl(url); 2340 } 2341 2342 private void loadUrlImpl(String url) { 2343 if (url == null) { 2344 return; 2345 } 2346 loadUrlImpl(url, null); 2347 } 2348 2349 /** 2350 * Load the url with postData using "POST" method into the WebView. If url 2351 * is not a network url, it will be loaded with {link 2352 * {@link #loadUrl(String)} instead. 2353 * 2354 * @param url The url of the resource to load. 2355 * @param postData The data will be passed to "POST" request. 2356 */ 2357 public void postUrl(String url, byte[] postData) { 2358 checkThread(); 2359 if (URLUtil.isNetworkUrl(url)) { 2360 switchOutDrawHistory(); 2361 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2362 arg.mUrl = url; 2363 arg.mPostData = postData; 2364 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2365 clearHelpers(); 2366 } else { 2367 loadUrlImpl(url); 2368 } 2369 } 2370 2371 /** 2372 * Load the given data into the WebView using a 'data' scheme URL. 2373 * <p> 2374 * Note that JavaScript's same origin policy means that script running in a 2375 * page loaded using this method will be unable to access content loaded 2376 * using any scheme other than 'data', including 'http(s)'. To avoid this 2377 * restriction, use {@link 2378 * #loadDataWithBaseURL(String,String,String,String,String) 2379 * loadDataWithBaseURL()} with an appropriate base URL. 2380 * <p> 2381 * If the value of the encoding parameter is 'base64', then the data must 2382 * be encoded as base64. Otherwise, the data must use ASCII encoding for 2383 * octets inside the range of safe URL characters and use the standard %xx 2384 * hex encoding of URLs for octets outside that range. For example, 2385 * '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively. 2386 * <p> 2387 * The 'data' scheme URL formed by this method uses the default US-ASCII 2388 * charset. If you need need to set a different charset, you should form a 2389 * 'data' scheme URL which explicitly specifies a charset parameter in the 2390 * mediatype portion of the URL and call {@link #loadUrl(String)} instead. 2391 * Note that the charset obtained from the mediatype portion of a data URL 2392 * always overrides that specified in the HTML or XML document itself. 2393 * @param data A String of data in the given encoding. 2394 * @param mimeType The MIME type of the data, e.g. 'text/html'. 2395 * @param encoding The encoding of the data. 2396 */ 2397 public void loadData(String data, String mimeType, String encoding) { 2398 checkThread(); 2399 loadDataImpl(data, mimeType, encoding); 2400 } 2401 2402 private void loadDataImpl(String data, String mimeType, String encoding) { 2403 StringBuilder dataUrl = new StringBuilder("data:"); 2404 dataUrl.append(mimeType); 2405 if ("base64".equals(encoding)) { 2406 dataUrl.append(";base64"); 2407 } 2408 dataUrl.append(","); 2409 dataUrl.append(data); 2410 loadUrlImpl(dataUrl.toString()); 2411 } 2412 2413 /** 2414 * Load the given data into the WebView, using baseUrl as the base URL for 2415 * the content. The base URL is used both to resolve relative URLs and when 2416 * applying JavaScript's same origin policy. The historyUrl is used for the 2417 * history entry. 2418 * <p> 2419 * Note that content specified in this way can access local device files 2420 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2421 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2422 * <p> 2423 * If the base URL uses the data scheme, this method is equivalent to 2424 * calling {@link #loadData(String,String,String) loadData()} and the 2425 * historyUrl is ignored. 2426 * @param baseUrl URL to use as the page's base URL. If null defaults to 2427 * 'about:blank' 2428 * @param data A String of data in the given encoding. 2429 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2430 * defaults to 'text/html'. 2431 * @param encoding The encoding of the data. 2432 * @param historyUrl URL to use as the history entry, if null defaults to 2433 * 'about:blank'. 2434 */ 2435 public void loadDataWithBaseURL(String baseUrl, String data, 2436 String mimeType, String encoding, String historyUrl) { 2437 checkThread(); 2438 2439 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2440 loadDataImpl(data, mimeType, encoding); 2441 return; 2442 } 2443 switchOutDrawHistory(); 2444 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2445 arg.mBaseUrl = baseUrl; 2446 arg.mData = data; 2447 arg.mMimeType = mimeType; 2448 arg.mEncoding = encoding; 2449 arg.mHistoryUrl = historyUrl; 2450 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2451 clearHelpers(); 2452 } 2453 2454 /** 2455 * Saves the current view as a web archive. 2456 * 2457 * @param filename The filename where the archive should be placed. 2458 */ 2459 public void saveWebArchive(String filename) { 2460 checkThread(); 2461 saveWebArchiveImpl(filename, false, null); 2462 } 2463 2464 /* package */ static class SaveWebArchiveMessage { 2465 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2466 mBasename = basename; 2467 mAutoname = autoname; 2468 mCallback = callback; 2469 } 2470 2471 /* package */ final String mBasename; 2472 /* package */ final boolean mAutoname; 2473 /* package */ final ValueCallback<String> mCallback; 2474 /* package */ String mResultFile; 2475 } 2476 2477 /** 2478 * Saves the current view as a web archive. 2479 * 2480 * @param basename The filename where the archive should be placed. 2481 * @param autoname If false, takes basename to be a file. If true, basename 2482 * is assumed to be a directory in which a filename will be 2483 * chosen according to the url of the current page. 2484 * @param callback Called after the web archive has been saved. The 2485 * parameter for onReceiveValue will either be the filename 2486 * under which the file was saved, or null if saving the 2487 * file failed. 2488 */ 2489 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2490 checkThread(); 2491 saveWebArchiveImpl(basename, autoname, callback); 2492 } 2493 2494 private void saveWebArchiveImpl(String basename, boolean autoname, 2495 ValueCallback<String> callback) { 2496 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2497 new SaveWebArchiveMessage(basename, autoname, callback)); 2498 } 2499 2500 /** 2501 * Stop the current load. 2502 */ 2503 public void stopLoading() { 2504 checkThread(); 2505 // TODO: should we clear all the messages in the queue before sending 2506 // STOP_LOADING? 2507 switchOutDrawHistory(); 2508 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2509 } 2510 2511 /** 2512 * Reload the current url. 2513 */ 2514 public void reload() { 2515 checkThread(); 2516 clearHelpers(); 2517 switchOutDrawHistory(); 2518 mWebViewCore.sendMessage(EventHub.RELOAD); 2519 } 2520 2521 /** 2522 * Return true if this WebView has a back history item. 2523 * @return True iff this WebView has a back history item. 2524 */ 2525 public boolean canGoBack() { 2526 checkThread(); 2527 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2528 synchronized (l) { 2529 if (l.getClearPending()) { 2530 return false; 2531 } else { 2532 return l.getCurrentIndex() > 0; 2533 } 2534 } 2535 } 2536 2537 /** 2538 * Go back in the history of this WebView. 2539 */ 2540 public void goBack() { 2541 checkThread(); 2542 goBackOrForwardImpl(-1); 2543 } 2544 2545 /** 2546 * Return true if this WebView has a forward history item. 2547 * @return True iff this Webview has a forward history item. 2548 */ 2549 public boolean canGoForward() { 2550 checkThread(); 2551 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2552 synchronized (l) { 2553 if (l.getClearPending()) { 2554 return false; 2555 } else { 2556 return l.getCurrentIndex() < l.getSize() - 1; 2557 } 2558 } 2559 } 2560 2561 /** 2562 * Go forward in the history of this WebView. 2563 */ 2564 public void goForward() { 2565 checkThread(); 2566 goBackOrForwardImpl(1); 2567 } 2568 2569 /** 2570 * Return true if the page can go back or forward the given 2571 * number of steps. 2572 * @param steps The negative or positive number of steps to move the 2573 * history. 2574 */ 2575 public boolean canGoBackOrForward(int steps) { 2576 checkThread(); 2577 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2578 synchronized (l) { 2579 if (l.getClearPending()) { 2580 return false; 2581 } else { 2582 int newIndex = l.getCurrentIndex() + steps; 2583 return newIndex >= 0 && newIndex < l.getSize(); 2584 } 2585 } 2586 } 2587 2588 /** 2589 * Go to the history item that is the number of steps away from 2590 * the current item. Steps is negative if backward and positive 2591 * if forward. 2592 * @param steps The number of steps to take back or forward in the back 2593 * forward list. 2594 */ 2595 public void goBackOrForward(int steps) { 2596 checkThread(); 2597 goBackOrForwardImpl(steps); 2598 } 2599 2600 private void goBackOrForwardImpl(int steps) { 2601 goBackOrForward(steps, false); 2602 } 2603 2604 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2605 if (steps != 0) { 2606 clearHelpers(); 2607 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2608 ignoreSnapshot ? 1 : 0); 2609 } 2610 } 2611 2612 /** 2613 * Returns true if private browsing is enabled in this WebView. 2614 */ 2615 public boolean isPrivateBrowsingEnabled() { 2616 checkThread(); 2617 return getSettings().isPrivateBrowsingEnabled(); 2618 } 2619 2620 private void startPrivateBrowsing() { 2621 getSettings().setPrivateBrowsingEnabled(true); 2622 } 2623 2624 private boolean extendScroll(int y) { 2625 int finalY = mScroller.getFinalY(); 2626 int newY = pinLocY(finalY + y); 2627 if (newY == finalY) return false; 2628 mScroller.setFinalY(newY); 2629 mScroller.extendDuration(computeDuration(0, y)); 2630 return true; 2631 } 2632 2633 /** 2634 * Scroll the contents of the view up by half the view size 2635 * @param top true to jump to the top of the page 2636 * @return true if the page was scrolled 2637 */ 2638 public boolean pageUp(boolean top) { 2639 checkThread(); 2640 if (mNativeClass == 0) { 2641 return false; 2642 } 2643 nativeClearCursor(); // start next trackball movement from page edge 2644 if (top) { 2645 // go to the top of the document 2646 return pinScrollTo(mScrollX, 0, true, 0); 2647 } 2648 // Page up 2649 int h = getHeight(); 2650 int y; 2651 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2652 y = -h + PAGE_SCROLL_OVERLAP; 2653 } else { 2654 y = -h / 2; 2655 } 2656 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2657 : extendScroll(y); 2658 } 2659 2660 /** 2661 * Scroll the contents of the view down by half the page size 2662 * @param bottom true to jump to bottom of page 2663 * @return true if the page was scrolled 2664 */ 2665 public boolean pageDown(boolean bottom) { 2666 checkThread(); 2667 if (mNativeClass == 0) { 2668 return false; 2669 } 2670 nativeClearCursor(); // start next trackball movement from page edge 2671 if (bottom) { 2672 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2673 } 2674 // Page down. 2675 int h = getHeight(); 2676 int y; 2677 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2678 y = h - PAGE_SCROLL_OVERLAP; 2679 } else { 2680 y = h / 2; 2681 } 2682 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2683 : extendScroll(y); 2684 } 2685 2686 /** 2687 * Clear the view so that onDraw() will draw nothing but white background, 2688 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2689 */ 2690 public void clearView() { 2691 checkThread(); 2692 mContentWidth = 0; 2693 mContentHeight = 0; 2694 setBaseLayer(0, null, false, false); 2695 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2696 } 2697 2698 /** 2699 * Return a new picture that captures the current display of the webview. 2700 * This is a copy of the display, and will be unaffected if the webview 2701 * later loads a different URL. 2702 * 2703 * @return a picture containing the current contents of the view. Note this 2704 * picture is of the entire document, and is not restricted to the 2705 * bounds of the view. 2706 */ 2707 public Picture capturePicture() { 2708 checkThread(); 2709 if (mNativeClass == 0) return null; 2710 Picture result = new Picture(); 2711 nativeCopyBaseContentToPicture(result); 2712 return result; 2713 } 2714 2715 /** 2716 * Return true if the browser is displaying a TextView for text input. 2717 */ 2718 private boolean inEditingMode() { 2719 return mWebTextView != null && mWebTextView.getParent() != null; 2720 } 2721 2722 /** 2723 * Remove the WebTextView. 2724 */ 2725 private void clearTextEntry() { 2726 if (inEditingMode()) { 2727 mWebTextView.remove(); 2728 } else { 2729 // The keyboard may be open with the WebView as the served view 2730 hideSoftKeyboard(); 2731 } 2732 } 2733 2734 /** 2735 * Return the current scale of the WebView 2736 * @return The current scale. 2737 */ 2738 public float getScale() { 2739 checkThread(); 2740 return mZoomManager.getScale(); 2741 } 2742 2743 /** 2744 * Compute the reading level scale of the WebView 2745 * @param scale The current scale. 2746 * @return The reading level scale. 2747 */ 2748 /*package*/ float computeReadingLevelScale(float scale) { 2749 return mZoomManager.computeReadingLevelScale(scale); 2750 } 2751 2752 /** 2753 * Set the initial scale for the WebView. 0 means default. If 2754 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2755 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2756 * WebView starts with this value as initial scale. 2757 * Please note that unlike the scale properties in the viewport meta tag, 2758 * this method doesn't take the screen density into account. 2759 * 2760 * @param scaleInPercent The initial scale in percent. 2761 */ 2762 public void setInitialScale(int scaleInPercent) { 2763 checkThread(); 2764 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2765 } 2766 2767 /** 2768 * Invoke the graphical zoom picker widget for this WebView. This will 2769 * result in the zoom widget appearing on the screen to control the zoom 2770 * level of this WebView. 2771 */ 2772 public void invokeZoomPicker() { 2773 checkThread(); 2774 if (!getSettings().supportZoom()) { 2775 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2776 return; 2777 } 2778 clearHelpers(); 2779 mZoomManager.invokeZoomPicker(); 2780 } 2781 2782 /** 2783 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2784 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2785 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2786 * anchor does not have a url or if it is a JavaScript url, the type will 2787 * be UNKNOWN_TYPE and the url has to be retrieved through 2788 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2789 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2790 * the "extra" field. A type of 2791 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2792 * a child node. If a phone number is found, the HitTestResult type is set 2793 * to PHONE_TYPE and the phone number is set in the "extra" field of 2794 * HitTestResult. If a map address is found, the HitTestResult type is set 2795 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2796 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2797 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2798 * HitTestResult type is set to UNKNOWN_TYPE. 2799 */ 2800 public HitTestResult getHitTestResult() { 2801 checkThread(); 2802 return hitTestResult(mInitialHitTestResult); 2803 } 2804 2805 private HitTestResult hitTestResult(HitTestResult fallback) { 2806 if (mNativeClass == 0 || sDisableNavcache) { 2807 return fallback; 2808 } 2809 2810 HitTestResult result = new HitTestResult(); 2811 if (nativeHasCursorNode()) { 2812 if (nativeCursorIsTextInput()) { 2813 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2814 } else { 2815 String text = nativeCursorText(); 2816 if (text != null) { 2817 if (text.startsWith(SCHEME_TEL)) { 2818 result.setType(HitTestResult.PHONE_TYPE); 2819 result.setExtra(URLDecoder.decode(text 2820 .substring(SCHEME_TEL.length()))); 2821 } else if (text.startsWith(SCHEME_MAILTO)) { 2822 result.setType(HitTestResult.EMAIL_TYPE); 2823 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2824 } else if (text.startsWith(SCHEME_GEO)) { 2825 result.setType(HitTestResult.GEO_TYPE); 2826 result.setExtra(URLDecoder.decode(text 2827 .substring(SCHEME_GEO.length()))); 2828 } else if (nativeCursorIsAnchor()) { 2829 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2830 result.setExtra(text); 2831 } 2832 } 2833 } 2834 } else if (fallback != null) { 2835 /* If webkit causes a rebuild while the long press is in progress, 2836 * the cursor node may be reset, even if it is still around. This 2837 * uses the cursor node saved when the touch began. Since the 2838 * nativeImageURI below only changes the result if it is successful, 2839 * this uses the data beneath the touch if available or the original 2840 * tap data otherwise. 2841 */ 2842 Log.v(LOGTAG, "hitTestResult use fallback"); 2843 result = fallback; 2844 } 2845 int type = result.getType(); 2846 if (type == HitTestResult.UNKNOWN_TYPE 2847 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2848 // Now check to see if it is an image. 2849 int contentX = viewToContentX(mLastTouchX + mScrollX); 2850 int contentY = viewToContentY(mLastTouchY + mScrollY); 2851 String text = nativeImageURI(contentX, contentY); 2852 if (text != null) { 2853 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2854 HitTestResult.IMAGE_TYPE : 2855 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2856 result.setExtra(text); 2857 } 2858 } 2859 return result; 2860 } 2861 2862 int getBlockLeftEdge(int x, int y, float readingScale) { 2863 if (!sDisableNavcache) { 2864 return nativeGetBlockLeftEdge(x, y, readingScale); 2865 } 2866 2867 float invReadingScale = 1.0f / readingScale; 2868 int readingWidth = (int) (getViewWidth() * invReadingScale); 2869 int left = NO_LEFTEDGE; 2870 if (mFocusedNode != null) { 2871 final int length = mFocusedNode.mEnclosingParentRects.length; 2872 for (int i = 0; i < length; i++) { 2873 Rect rect = mFocusedNode.mEnclosingParentRects[i]; 2874 if (rect.width() < mFocusedNode.mHitTestSlop) { 2875 // ignore bounding boxes that are too small 2876 continue; 2877 } else if (left != NO_LEFTEDGE && rect.width() > readingWidth) { 2878 // stop when bounding box doesn't fit the screen width 2879 // at reading scale 2880 break; 2881 } 2882 2883 left = rect.left; 2884 } 2885 } 2886 2887 return left; 2888 } 2889 2890 // Called by JNI when the DOM has changed the focus. Clear the focus so 2891 // that new keys will go to the newly focused field 2892 private void domChangedFocus() { 2893 if (inEditingMode()) { 2894 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2895 } 2896 } 2897 /** 2898 * Request the anchor or image element URL at the last tapped point. 2899 * If hrefMsg is null, this method returns immediately and does not 2900 * dispatch hrefMsg to its target. If the tapped point hits an image, 2901 * an anchor, or an image in an anchor, the message associates 2902 * strings in named keys in its data. The value paired with the key 2903 * may be an empty string. 2904 * 2905 * @param hrefMsg This message will be dispatched with the result of the 2906 * request. The message data contains three keys: 2907 * - "url" returns the anchor's href attribute. 2908 * - "title" returns the anchor's text. 2909 * - "src" returns the image's src attribute. 2910 */ 2911 public void requestFocusNodeHref(Message hrefMsg) { 2912 checkThread(); 2913 if (hrefMsg == null) { 2914 return; 2915 } 2916 int contentX = viewToContentX(mLastTouchX + mScrollX); 2917 int contentY = viewToContentY(mLastTouchY + mScrollY); 2918 if (mFocusedNode != null && mFocusedNode.mHitTestX == contentX 2919 && mFocusedNode.mHitTestY == contentY) { 2920 hrefMsg.getData().putString(FocusNodeHref.URL, mFocusedNode.mLinkUrl); 2921 hrefMsg.getData().putString(FocusNodeHref.TITLE, mFocusedNode.mAnchorText); 2922 hrefMsg.getData().putString(FocusNodeHref.SRC, mFocusedNode.mImageUrl); 2923 hrefMsg.sendToTarget(); 2924 return; 2925 } 2926 if (nativeHasCursorNode()) { 2927 Rect cursorBounds = nativeGetCursorRingBounds(); 2928 if (!cursorBounds.contains(contentX, contentY)) { 2929 int slop = viewToContentDimension(mNavSlop); 2930 cursorBounds.inset(-slop, -slop); 2931 if (cursorBounds.contains(contentX, contentY)) { 2932 contentX = cursorBounds.centerX(); 2933 contentY = cursorBounds.centerY(); 2934 } 2935 } 2936 } 2937 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2938 contentX, contentY, hrefMsg); 2939 } 2940 2941 /** 2942 * Request the url of the image last touched by the user. msg will be sent 2943 * to its target with a String representing the url as its object. 2944 * 2945 * @param msg This message will be dispatched with the result of the request 2946 * as the data member with "url" as key. The result can be null. 2947 */ 2948 public void requestImageRef(Message msg) { 2949 checkThread(); 2950 if (0 == mNativeClass) return; // client isn't initialized 2951 int contentX = viewToContentX(mLastTouchX + mScrollX); 2952 int contentY = viewToContentY(mLastTouchY + mScrollY); 2953 String ref = nativeImageURI(contentX, contentY); 2954 Bundle data = msg.getData(); 2955 data.putString("url", ref); 2956 msg.setData(data); 2957 msg.sendToTarget(); 2958 } 2959 2960 static int pinLoc(int x, int viewMax, int docMax) { 2961// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2962 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2963 // pin the short document to the top/left of the screen 2964 x = 0; 2965// Log.d(LOGTAG, "--- center " + x); 2966 } else if (x < 0) { 2967 x = 0; 2968// Log.d(LOGTAG, "--- zero"); 2969 } else if (x + viewMax > docMax) { 2970 x = docMax - viewMax; 2971// Log.d(LOGTAG, "--- pin " + x); 2972 } 2973 return x; 2974 } 2975 2976 // Expects x in view coordinates 2977 int pinLocX(int x) { 2978 if (mInOverScrollMode) return x; 2979 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2980 } 2981 2982 // Expects y in view coordinates 2983 int pinLocY(int y) { 2984 if (mInOverScrollMode) return y; 2985 return pinLoc(y, getViewHeightWithTitle(), 2986 computeRealVerticalScrollRange() + getTitleHeight()); 2987 } 2988 2989 /** 2990 * A title bar which is embedded in this WebView, and scrolls along with it 2991 * vertically, but not horizontally. 2992 */ 2993 private View mTitleBar; 2994 2995 /** 2996 * the title bar rendering gravity 2997 */ 2998 private int mTitleGravity; 2999 3000 /** 3001 * Add or remove a title bar to be embedded into the WebView, and scroll 3002 * along with it vertically, while remaining in view horizontally. Pass 3003 * null to remove the title bar from the WebView, and return to drawing 3004 * the WebView normally without translating to account for the title bar. 3005 * @hide 3006 */ 3007 public void setEmbeddedTitleBar(View v) { 3008 if (mTitleBar == v) return; 3009 if (mTitleBar != null) { 3010 removeView(mTitleBar); 3011 } 3012 if (null != v) { 3013 addView(v, new AbsoluteLayout.LayoutParams( 3014 ViewGroup.LayoutParams.MATCH_PARENT, 3015 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 3016 } 3017 mTitleBar = v; 3018 } 3019 3020 /** 3021 * Set where to render the embedded title bar 3022 * NO_GRAVITY at the top of the page 3023 * TOP at the top of the screen 3024 * @hide 3025 */ 3026 public void setTitleBarGravity(int gravity) { 3027 mTitleGravity = gravity; 3028 // force refresh 3029 invalidate(); 3030 } 3031 3032 /** 3033 * Given a distance in view space, convert it to content space. Note: this 3034 * does not reflect translation, just scaling, so this should not be called 3035 * with coordinates, but should be called for dimensions like width or 3036 * height. 3037 */ 3038 private int viewToContentDimension(int d) { 3039 return Math.round(d * mZoomManager.getInvScale()); 3040 } 3041 3042 /** 3043 * Given an x coordinate in view space, convert it to content space. Also 3044 * may be used for absolute heights (such as for the WebTextView's 3045 * textSize, which is unaffected by the height of the title bar). 3046 */ 3047 /*package*/ int viewToContentX(int x) { 3048 return viewToContentDimension(x); 3049 } 3050 3051 /** 3052 * Given a y coordinate in view space, convert it to content space. 3053 * Takes into account the height of the title bar if there is one 3054 * embedded into the WebView. 3055 */ 3056 /*package*/ int viewToContentY(int y) { 3057 return viewToContentDimension(y - getTitleHeight()); 3058 } 3059 3060 /** 3061 * Given a x coordinate in view space, convert it to content space. 3062 * Returns the result as a float. 3063 */ 3064 private float viewToContentXf(int x) { 3065 return x * mZoomManager.getInvScale(); 3066 } 3067 3068 /** 3069 * Given a y coordinate in view space, convert it to content space. 3070 * Takes into account the height of the title bar if there is one 3071 * embedded into the WebView. Returns the result as a float. 3072 */ 3073 private float viewToContentYf(int y) { 3074 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 3075 } 3076 3077 /** 3078 * Given a distance in content space, convert it to view space. Note: this 3079 * does not reflect translation, just scaling, so this should not be called 3080 * with coordinates, but should be called for dimensions like width or 3081 * height. 3082 */ 3083 /*package*/ int contentToViewDimension(int d) { 3084 return Math.round(d * mZoomManager.getScale()); 3085 } 3086 3087 /** 3088 * Given an x coordinate in content space, convert it to view 3089 * space. 3090 */ 3091 /*package*/ int contentToViewX(int x) { 3092 return contentToViewDimension(x); 3093 } 3094 3095 /** 3096 * Given a y coordinate in content space, convert it to view 3097 * space. Takes into account the height of the title bar. 3098 */ 3099 /*package*/ int contentToViewY(int y) { 3100 return contentToViewDimension(y) + getTitleHeight(); 3101 } 3102 3103 private Rect contentToViewRect(Rect x) { 3104 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 3105 contentToViewX(x.right), contentToViewY(x.bottom)); 3106 } 3107 3108 /* To invalidate a rectangle in content coordinates, we need to transform 3109 the rect into view coordinates, so we can then call invalidate(...). 3110 3111 Normally, we would just call contentToView[XY](...), which eventually 3112 calls Math.round(coordinate * mActualScale). However, for invalidates, 3113 we need to account for the slop that occurs with antialiasing. To 3114 address that, we are a little more liberal in the size of the rect that 3115 we invalidate. 3116 3117 This liberal calculation calls floor() for the top/left, and ceil() for 3118 the bottom/right coordinates. This catches the possible extra pixels of 3119 antialiasing that we might have missed with just round(). 3120 */ 3121 3122 // Called by JNI to invalidate the View, given rectangle coordinates in 3123 // content space 3124 private void viewInvalidate(int l, int t, int r, int b) { 3125 final float scale = mZoomManager.getScale(); 3126 final int dy = getTitleHeight(); 3127 invalidate((int)Math.floor(l * scale), 3128 (int)Math.floor(t * scale) + dy, 3129 (int)Math.ceil(r * scale), 3130 (int)Math.ceil(b * scale) + dy); 3131 } 3132 3133 // Called by JNI to invalidate the View after a delay, given rectangle 3134 // coordinates in content space 3135 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 3136 final float scale = mZoomManager.getScale(); 3137 final int dy = getTitleHeight(); 3138 postInvalidateDelayed(delay, 3139 (int)Math.floor(l * scale), 3140 (int)Math.floor(t * scale) + dy, 3141 (int)Math.ceil(r * scale), 3142 (int)Math.ceil(b * scale) + dy); 3143 } 3144 3145 private void invalidateContentRect(Rect r) { 3146 viewInvalidate(r.left, r.top, r.right, r.bottom); 3147 } 3148 3149 // stop the scroll animation, and don't let a subsequent fling add 3150 // to the existing velocity 3151 private void abortAnimation() { 3152 mScroller.abortAnimation(); 3153 mLastVelocity = 0; 3154 } 3155 3156 /* call from webcoreview.draw(), so we're still executing in the UI thread 3157 */ 3158 private void recordNewContentSize(int w, int h, boolean updateLayout) { 3159 3160 // premature data from webkit, ignore 3161 if ((w | h) == 0) { 3162 return; 3163 } 3164 3165 // don't abort a scroll animation if we didn't change anything 3166 if (mContentWidth != w || mContentHeight != h) { 3167 // record new dimensions 3168 mContentWidth = w; 3169 mContentHeight = h; 3170 // If history Picture is drawn, don't update scroll. They will be 3171 // updated when we get out of that mode. 3172 if (!mDrawHistory) { 3173 // repin our scroll, taking into account the new content size 3174 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 3175 if (!mScroller.isFinished()) { 3176 // We are in the middle of a scroll. Repin the final scroll 3177 // position. 3178 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 3179 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 3180 } 3181 } 3182 } 3183 contentSizeChanged(updateLayout); 3184 } 3185 3186 // Used to avoid sending many visible rect messages. 3187 private Rect mLastVisibleRectSent = new Rect(); 3188 private Rect mLastGlobalRect = new Rect(); 3189 private Rect mVisibleRect = new Rect(); 3190 private Rect mGlobalVisibleRect = new Rect(); 3191 private Point mScrollOffset = new Point(); 3192 3193 Rect sendOurVisibleRect() { 3194 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 3195 calcOurContentVisibleRect(mVisibleRect); 3196 // Rect.equals() checks for null input. 3197 if (!mVisibleRect.equals(mLastVisibleRectSent)) { 3198 if (!mBlockWebkitViewMessages) { 3199 mScrollOffset.set(mVisibleRect.left, mVisibleRect.top); 3200 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 3201 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 3202 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, mScrollOffset); 3203 } 3204 mLastVisibleRectSent.set(mVisibleRect); 3205 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3206 } 3207 if (getGlobalVisibleRect(mGlobalVisibleRect) 3208 && !mGlobalVisibleRect.equals(mLastGlobalRect)) { 3209 if (DebugFlags.WEB_VIEW) { 3210 Log.v(LOGTAG, "sendOurVisibleRect=(" + mGlobalVisibleRect.left + "," 3211 + mGlobalVisibleRect.top + ",r=" + mGlobalVisibleRect.right + ",b=" 3212 + mGlobalVisibleRect.bottom); 3213 } 3214 // TODO: the global offset is only used by windowRect() 3215 // in ChromeClientAndroid ; other clients such as touch 3216 // and mouse events could return view + screen relative points. 3217 if (!mBlockWebkitViewMessages) { 3218 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, mGlobalVisibleRect); 3219 } 3220 mLastGlobalRect.set(mGlobalVisibleRect); 3221 } 3222 return mVisibleRect; 3223 } 3224 3225 private Point mGlobalVisibleOffset = new Point(); 3226 // Sets r to be the visible rectangle of our webview in view coordinates 3227 private void calcOurVisibleRect(Rect r) { 3228 getGlobalVisibleRect(r, mGlobalVisibleOffset); 3229 r.offset(-mGlobalVisibleOffset.x, -mGlobalVisibleOffset.y); 3230 } 3231 3232 // Sets r to be our visible rectangle in content coordinates 3233 private void calcOurContentVisibleRect(Rect r) { 3234 calcOurVisibleRect(r); 3235 r.left = viewToContentX(r.left); 3236 // viewToContentY will remove the total height of the title bar. Add 3237 // the visible height back in to account for the fact that if the title 3238 // bar is partially visible, the part of the visible rect which is 3239 // displaying our content is displaced by that amount. 3240 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 3241 r.right = viewToContentX(r.right); 3242 r.bottom = viewToContentY(r.bottom); 3243 } 3244 3245 private Rect mContentVisibleRect = new Rect(); 3246 // Sets r to be our visible rectangle in content coordinates. We use this 3247 // method on the native side to compute the position of the fixed layers. 3248 // Uses floating coordinates (necessary to correctly place elements when 3249 // the scale factor is not 1) 3250 private void calcOurContentVisibleRectF(RectF r) { 3251 calcOurVisibleRect(mContentVisibleRect); 3252 r.left = viewToContentXf(mContentVisibleRect.left); 3253 // viewToContentY will remove the total height of the title bar. Add 3254 // the visible height back in to account for the fact that if the title 3255 // bar is partially visible, the part of the visible rect which is 3256 // displaying our content is displaced by that amount. 3257 r.top = viewToContentYf(mContentVisibleRect.top + getVisibleTitleHeightImpl()); 3258 r.right = viewToContentXf(mContentVisibleRect.right); 3259 r.bottom = viewToContentYf(mContentVisibleRect.bottom); 3260 } 3261 3262 static class ViewSizeData { 3263 int mWidth; 3264 int mHeight; 3265 float mHeightWidthRatio; 3266 int mActualViewHeight; 3267 int mTextWrapWidth; 3268 int mAnchorX; 3269 int mAnchorY; 3270 float mScale; 3271 boolean mIgnoreHeight; 3272 } 3273 3274 /** 3275 * Compute unzoomed width and height, and if they differ from the last 3276 * values we sent, send them to webkit (to be used as new viewport) 3277 * 3278 * @param force ensures that the message is sent to webkit even if the width 3279 * or height has not changed since the last message 3280 * 3281 * @return true if new values were sent 3282 */ 3283 boolean sendViewSizeZoom(boolean force) { 3284 if (mBlockWebkitViewMessages) return false; 3285 if (mZoomManager.isPreventingWebkitUpdates()) return false; 3286 3287 int viewWidth = getViewWidth(); 3288 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 3289 // This height could be fixed and be different from actual visible height. 3290 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 3291 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 3292 // Make the ratio more accurate than (newHeight / newWidth), since the 3293 // latter both are calculated and rounded. 3294 float heightWidthRatio = (float) viewHeight / viewWidth; 3295 /* 3296 * Because the native side may have already done a layout before the 3297 * View system was able to measure us, we have to send a height of 0 to 3298 * remove excess whitespace when we grow our width. This will trigger a 3299 * layout and a change in content size. This content size change will 3300 * mean that contentSizeChanged will either call this method directly or 3301 * indirectly from onSizeChanged. 3302 */ 3303 if (newWidth > mLastWidthSent && mWrapContent) { 3304 newHeight = 0; 3305 heightWidthRatio = 0; 3306 } 3307 // Actual visible content height. 3308 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 3309 // Avoid sending another message if the dimensions have not changed. 3310 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 3311 actualViewHeight != mLastActualHeightSent) { 3312 ViewSizeData data = new ViewSizeData(); 3313 data.mWidth = newWidth; 3314 data.mHeight = newHeight; 3315 data.mHeightWidthRatio = heightWidthRatio; 3316 data.mActualViewHeight = actualViewHeight; 3317 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 3318 data.mScale = mZoomManager.getScale(); 3319 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 3320 && !mHeightCanMeasure; 3321 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 3322 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 3323 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 3324 mLastWidthSent = newWidth; 3325 mLastHeightSent = newHeight; 3326 mLastActualHeightSent = actualViewHeight; 3327 mZoomManager.clearDocumentAnchor(); 3328 return true; 3329 } 3330 return false; 3331 } 3332 3333 /** 3334 * Update the double-tap zoom. 3335 */ 3336 /* package */ void updateDoubleTapZoom(int doubleTapZoom) { 3337 mZoomManager.updateDoubleTapZoom(doubleTapZoom); 3338 } 3339 3340 private int computeRealHorizontalScrollRange() { 3341 if (mDrawHistory) { 3342 return mHistoryWidth; 3343 } else { 3344 // to avoid rounding error caused unnecessary scrollbar, use floor 3345 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 3346 } 3347 } 3348 3349 @Override 3350 protected int computeHorizontalScrollRange() { 3351 int range = computeRealHorizontalScrollRange(); 3352 3353 // Adjust reported range if overscrolled to compress the scroll bars 3354 final int scrollX = mScrollX; 3355 final int overscrollRight = computeMaxScrollX(); 3356 if (scrollX < 0) { 3357 range -= scrollX; 3358 } else if (scrollX > overscrollRight) { 3359 range += scrollX - overscrollRight; 3360 } 3361 3362 return range; 3363 } 3364 3365 @Override 3366 protected int computeHorizontalScrollOffset() { 3367 return Math.max(mScrollX, 0); 3368 } 3369 3370 private int computeRealVerticalScrollRange() { 3371 if (mDrawHistory) { 3372 return mHistoryHeight; 3373 } else { 3374 // to avoid rounding error caused unnecessary scrollbar, use floor 3375 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 3376 } 3377 } 3378 3379 @Override 3380 protected int computeVerticalScrollRange() { 3381 int range = computeRealVerticalScrollRange(); 3382 3383 // Adjust reported range if overscrolled to compress the scroll bars 3384 final int scrollY = mScrollY; 3385 final int overscrollBottom = computeMaxScrollY(); 3386 if (scrollY < 0) { 3387 range -= scrollY; 3388 } else if (scrollY > overscrollBottom) { 3389 range += scrollY - overscrollBottom; 3390 } 3391 3392 return range; 3393 } 3394 3395 @Override 3396 protected int computeVerticalScrollOffset() { 3397 return Math.max(mScrollY - getTitleHeight(), 0); 3398 } 3399 3400 @Override 3401 protected int computeVerticalScrollExtent() { 3402 return getViewHeight(); 3403 } 3404 3405 /** @hide */ 3406 @Override 3407 protected void onDrawVerticalScrollBar(Canvas canvas, 3408 Drawable scrollBar, 3409 int l, int t, int r, int b) { 3410 if (mScrollY < 0) { 3411 t -= mScrollY; 3412 } 3413 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3414 scrollBar.draw(canvas); 3415 } 3416 3417 @Override 3418 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3419 boolean clampedY) { 3420 // Special-case layer scrolling so that we do not trigger normal scroll 3421 // updating. 3422 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3423 scrollLayerTo(scrollX, scrollY); 3424 return; 3425 } 3426 mInOverScrollMode = false; 3427 int maxX = computeMaxScrollX(); 3428 int maxY = computeMaxScrollY(); 3429 if (maxX == 0) { 3430 // do not over scroll x if the page just fits the screen 3431 scrollX = pinLocX(scrollX); 3432 } else if (scrollX < 0 || scrollX > maxX) { 3433 mInOverScrollMode = true; 3434 } 3435 if (scrollY < 0 || scrollY > maxY) { 3436 mInOverScrollMode = true; 3437 } 3438 3439 int oldX = mScrollX; 3440 int oldY = mScrollY; 3441 3442 super.scrollTo(scrollX, scrollY); 3443 3444 if (mOverScrollGlow != null) { 3445 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 3446 } 3447 } 3448 3449 /** 3450 * Get the url for the current page. This is not always the same as the url 3451 * passed to WebViewClient.onPageStarted because although the load for 3452 * that url has begun, the current page may not have changed. 3453 * @return The url for the current page. 3454 */ 3455 public String getUrl() { 3456 checkThread(); 3457 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3458 return h != null ? h.getUrl() : null; 3459 } 3460 3461 /** 3462 * Get the original url for the current page. This is not always the same 3463 * as the url passed to WebViewClient.onPageStarted because although the 3464 * load for that url has begun, the current page may not have changed. 3465 * Also, there may have been redirects resulting in a different url to that 3466 * originally requested. 3467 * @return The url that was originally requested for the current page. 3468 */ 3469 public String getOriginalUrl() { 3470 checkThread(); 3471 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3472 return h != null ? h.getOriginalUrl() : null; 3473 } 3474 3475 /** 3476 * Get the title for the current page. This is the title of the current page 3477 * until WebViewClient.onReceivedTitle is called. 3478 * @return The title for the current page. 3479 */ 3480 public String getTitle() { 3481 checkThread(); 3482 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3483 return h != null ? h.getTitle() : null; 3484 } 3485 3486 /** 3487 * Get the favicon for the current page. This is the favicon of the current 3488 * page until WebViewClient.onReceivedIcon is called. 3489 * @return The favicon for the current page. 3490 */ 3491 public Bitmap getFavicon() { 3492 checkThread(); 3493 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3494 return h != null ? h.getFavicon() : null; 3495 } 3496 3497 /** 3498 * Get the touch icon url for the apple-touch-icon <link> element, or 3499 * a URL on this site's server pointing to the standard location of a 3500 * touch icon. 3501 * @hide 3502 */ 3503 public String getTouchIconUrl() { 3504 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3505 return h != null ? h.getTouchIconUrl() : null; 3506 } 3507 3508 /** 3509 * Get the progress for the current page. 3510 * @return The progress for the current page between 0 and 100. 3511 */ 3512 public int getProgress() { 3513 checkThread(); 3514 return mCallbackProxy.getProgress(); 3515 } 3516 3517 /** 3518 * @return the height of the HTML content. 3519 */ 3520 public int getContentHeight() { 3521 checkThread(); 3522 return mContentHeight; 3523 } 3524 3525 /** 3526 * @return the width of the HTML content. 3527 * @hide 3528 */ 3529 public int getContentWidth() { 3530 return mContentWidth; 3531 } 3532 3533 /** 3534 * @hide 3535 */ 3536 public int getPageBackgroundColor() { 3537 return nativeGetBackgroundColor(); 3538 } 3539 3540 /** 3541 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3542 * is a global requests, not restricted to just this webview. This can be 3543 * useful if the application has been paused. 3544 */ 3545 public void pauseTimers() { 3546 checkThread(); 3547 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3548 } 3549 3550 /** 3551 * Resume all layout, parsing, and JavaScript timers for all webviews. 3552 * This will resume dispatching all timers. 3553 */ 3554 public void resumeTimers() { 3555 checkThread(); 3556 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3557 } 3558 3559 /** 3560 * Call this to pause any extra processing associated with this WebView and 3561 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3562 * is taken offscreen, this could be called to reduce unnecessary CPU or 3563 * network traffic. When the WebView is again "active", call onResume(). 3564 * 3565 * Note that this differs from pauseTimers(), which affects all WebViews. 3566 */ 3567 public void onPause() { 3568 checkThread(); 3569 if (!mIsPaused) { 3570 mIsPaused = true; 3571 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3572 // We want to pause the current playing video when switching out 3573 // from the current WebView/tab. 3574 if (mHTML5VideoViewProxy != null) { 3575 mHTML5VideoViewProxy.pauseAndDispatch(); 3576 } 3577 if (mNativeClass != 0) { 3578 nativeSetPauseDrawing(mNativeClass, true); 3579 } 3580 3581 cancelSelectDialog(); 3582 WebCoreThreadWatchdog.pause(); 3583 } 3584 } 3585 3586 @Override 3587 protected void onWindowVisibilityChanged(int visibility) { 3588 super.onWindowVisibilityChanged(visibility); 3589 updateDrawingState(); 3590 } 3591 3592 void updateDrawingState() { 3593 if (mNativeClass == 0 || mIsPaused) return; 3594 if (getWindowVisibility() != VISIBLE) { 3595 nativeSetPauseDrawing(mNativeClass, true); 3596 } else if (getVisibility() != VISIBLE) { 3597 nativeSetPauseDrawing(mNativeClass, true); 3598 } else { 3599 nativeSetPauseDrawing(mNativeClass, false); 3600 } 3601 } 3602 3603 /** 3604 * Call this to resume a WebView after a previous call to onPause(). 3605 */ 3606 public void onResume() { 3607 checkThread(); 3608 if (mIsPaused) { 3609 mIsPaused = false; 3610 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3611 if (mNativeClass != 0) { 3612 nativeSetPauseDrawing(mNativeClass, false); 3613 } 3614 } 3615 // Ensure that the watchdog has a currently valid Context to be able to display 3616 // a prompt dialog. For example, if the Activity was finished whilst the WebCore 3617 // thread was blocked and the Activity is started again, we may reuse the blocked 3618 // thread, but we'll have a new Activity. 3619 WebCoreThreadWatchdog.updateContext(mContext); 3620 // We get a call to onResume for new WebViews (i.e. mIsPaused will be false). We need 3621 // to ensure that the Watchdog thread is running for the new WebView, so call 3622 // it outside the if block above. 3623 WebCoreThreadWatchdog.resume(); 3624 } 3625 3626 /** 3627 * Returns true if the view is paused, meaning onPause() was called. Calling 3628 * onResume() sets the paused state back to false. 3629 * @hide 3630 */ 3631 public boolean isPaused() { 3632 return mIsPaused; 3633 } 3634 3635 /** 3636 * Call this to inform the view that memory is low so that it can 3637 * free any available memory. 3638 */ 3639 public void freeMemory() { 3640 checkThread(); 3641 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3642 } 3643 3644 /** 3645 * Clear the resource cache. Note that the cache is per-application, so 3646 * this will clear the cache for all WebViews used. 3647 * 3648 * @param includeDiskFiles If false, only the RAM cache is cleared. 3649 */ 3650 public void clearCache(boolean includeDiskFiles) { 3651 checkThread(); 3652 // Note: this really needs to be a static method as it clears cache for all 3653 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3654 // we can't make this static. 3655 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3656 includeDiskFiles ? 1 : 0, 0); 3657 } 3658 3659 /** 3660 * Make sure that clearing the form data removes the adapter from the 3661 * currently focused textfield if there is one. 3662 */ 3663 public void clearFormData() { 3664 checkThread(); 3665 if (inEditingMode()) { 3666 mWebTextView.setAdapterCustom(null); 3667 } 3668 } 3669 3670 /** 3671 * Tell the WebView to clear its internal back/forward list. 3672 */ 3673 public void clearHistory() { 3674 checkThread(); 3675 mCallbackProxy.getBackForwardList().setClearPending(); 3676 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3677 } 3678 3679 /** 3680 * Clear the SSL preferences table stored in response to proceeding with SSL 3681 * certificate errors. 3682 */ 3683 public void clearSslPreferences() { 3684 checkThread(); 3685 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3686 } 3687 3688 /** 3689 * Return the WebBackForwardList for this WebView. This contains the 3690 * back/forward list for use in querying each item in the history stack. 3691 * This is a copy of the private WebBackForwardList so it contains only a 3692 * snapshot of the current state. Multiple calls to this method may return 3693 * different objects. The object returned from this method will not be 3694 * updated to reflect any new state. 3695 */ 3696 public WebBackForwardList copyBackForwardList() { 3697 checkThread(); 3698 return mCallbackProxy.getBackForwardList().clone(); 3699 } 3700 3701 /* 3702 * Highlight and scroll to the next occurance of String in findAll. 3703 * Wraps the page infinitely, and scrolls. Must be called after 3704 * calling findAll. 3705 * 3706 * @param forward Direction to search. 3707 */ 3708 public void findNext(boolean forward) { 3709 checkThread(); 3710 if (0 == mNativeClass) return; // client isn't initialized 3711 nativeFindNext(forward); 3712 } 3713 3714 /* 3715 * Find all instances of find on the page and highlight them. 3716 * @param find String to find. 3717 * @return int The number of occurances of the String "find" 3718 * that were found. 3719 */ 3720 public int findAll(String find) { 3721 checkThread(); 3722 if (0 == mNativeClass) return 0; // client isn't initialized 3723 int result = find != null ? nativeFindAll(find.toLowerCase(), 3724 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3725 invalidate(); 3726 mLastFind = find; 3727 return result; 3728 } 3729 3730 /** 3731 * Start an ActionMode for finding text in this WebView. Only works if this 3732 * WebView is attached to the view system. 3733 * @param text If non-null, will be the initial text to search for. 3734 * Otherwise, the last String searched for in this WebView will 3735 * be used to start. 3736 * @param showIme If true, show the IME, assuming the user will begin typing. 3737 * If false and text is non-null, perform a find all. 3738 * @return boolean True if the find dialog is shown, false otherwise. 3739 */ 3740 public boolean showFindDialog(String text, boolean showIme) { 3741 checkThread(); 3742 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3743 if (getParent() == null || startActionMode(callback) == null) { 3744 // Could not start the action mode, so end Find on page 3745 return false; 3746 } 3747 mCachedOverlappingActionModeHeight = -1; 3748 mFindCallback = callback; 3749 setFindIsUp(true); 3750 mFindCallback.setWebView(this); 3751 if (showIme) { 3752 mFindCallback.showSoftInput(); 3753 } else if (text != null) { 3754 mFindCallback.setText(text); 3755 mFindCallback.findAll(); 3756 return true; 3757 } 3758 if (text == null) { 3759 text = mLastFind; 3760 } 3761 if (text != null) { 3762 mFindCallback.setText(text); 3763 } 3764 return true; 3765 } 3766 3767 /** 3768 * Keep track of the find callback so that we can remove its titlebar if 3769 * necessary. 3770 */ 3771 private FindActionModeCallback mFindCallback; 3772 3773 /** 3774 * Toggle whether the find dialog is showing, for both native and Java. 3775 */ 3776 private void setFindIsUp(boolean isUp) { 3777 mFindIsUp = isUp; 3778 if (0 == mNativeClass) return; // client isn't initialized 3779 nativeSetFindIsUp(isUp); 3780 } 3781 3782 /** 3783 * Return the index of the currently highlighted match. 3784 */ 3785 int findIndex() { 3786 if (0 == mNativeClass) return -1; 3787 return nativeFindIndex(); 3788 } 3789 3790 // Used to know whether the find dialog is open. Affects whether 3791 // or not we draw the highlights for matches. 3792 private boolean mFindIsUp; 3793 3794 // Keep track of the last string sent, so we can search again when find is 3795 // reopened. 3796 private String mLastFind; 3797 3798 /** 3799 * Return the first substring consisting of the address of a physical 3800 * location. Currently, only addresses in the United States are detected, 3801 * and consist of: 3802 * - a house number 3803 * - a street name 3804 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3805 * - a city name 3806 * - a state or territory, either spelled out or two-letter abbr. 3807 * - an optional 5 digit or 9 digit zip code. 3808 * 3809 * All names must be correctly capitalized, and the zip code, if present, 3810 * must be valid for the state. The street type must be a standard USPS 3811 * spelling or abbreviation. The state or territory must also be spelled 3812 * or abbreviated using USPS standards. The house number may not exceed 3813 * five digits. 3814 * @param addr The string to search for addresses. 3815 * 3816 * @return the address, or if no address is found, return null. 3817 */ 3818 public static String findAddress(String addr) { 3819 checkThread(); 3820 return findAddress(addr, false); 3821 } 3822 3823 /** 3824 * @hide 3825 * Return the first substring consisting of the address of a physical 3826 * location. Currently, only addresses in the United States are detected, 3827 * and consist of: 3828 * - a house number 3829 * - a street name 3830 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3831 * - a city name 3832 * - a state or territory, either spelled out or two-letter abbr. 3833 * - an optional 5 digit or 9 digit zip code. 3834 * 3835 * Names are optionally capitalized, and the zip code, if present, 3836 * must be valid for the state. The street type must be a standard USPS 3837 * spelling or abbreviation. The state or territory must also be spelled 3838 * or abbreviated using USPS standards. The house number may not exceed 3839 * five digits. 3840 * @param addr The string to search for addresses. 3841 * @param caseInsensitive addr Set to true to make search ignore case. 3842 * 3843 * @return the address, or if no address is found, return null. 3844 */ 3845 public static String findAddress(String addr, boolean caseInsensitive) { 3846 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3847 } 3848 3849 /* 3850 * Clear the highlighting surrounding text matches created by findAll. 3851 */ 3852 public void clearMatches() { 3853 checkThread(); 3854 if (mNativeClass == 0) 3855 return; 3856 nativeSetFindIsEmpty(); 3857 invalidate(); 3858 } 3859 3860 /** 3861 * Called when the find ActionMode ends. 3862 */ 3863 void notifyFindDialogDismissed() { 3864 mFindCallback = null; 3865 mCachedOverlappingActionModeHeight = -1; 3866 if (mWebViewCore == null) { 3867 return; 3868 } 3869 clearMatches(); 3870 setFindIsUp(false); 3871 // Now that the dialog has been removed, ensure that we scroll to a 3872 // location that is not beyond the end of the page. 3873 pinScrollTo(mScrollX, mScrollY, false, 0); 3874 invalidate(); 3875 } 3876 3877 /** 3878 * Query the document to see if it contains any image references. The 3879 * message object will be dispatched with arg1 being set to 1 if images 3880 * were found and 0 if the document does not reference any images. 3881 * @param response The message that will be dispatched with the result. 3882 */ 3883 public void documentHasImages(Message response) { 3884 checkThread(); 3885 if (response == null) { 3886 return; 3887 } 3888 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3889 } 3890 3891 /** 3892 * Request the scroller to abort any ongoing animation 3893 * 3894 * @hide 3895 */ 3896 public void stopScroll() { 3897 mScroller.forceFinished(true); 3898 mLastVelocity = 0; 3899 } 3900 3901 @Override 3902 public void computeScroll() { 3903 if (mScroller.computeScrollOffset()) { 3904 int oldX = mScrollX; 3905 int oldY = mScrollY; 3906 int x = mScroller.getCurrX(); 3907 int y = mScroller.getCurrY(); 3908 invalidate(); // So we draw again 3909 3910 if (!mScroller.isFinished()) { 3911 int rangeX = computeMaxScrollX(); 3912 int rangeY = computeMaxScrollY(); 3913 int overflingDistance = mOverflingDistance; 3914 3915 // Use the layer's scroll data if needed. 3916 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3917 oldX = mScrollingLayerRect.left; 3918 oldY = mScrollingLayerRect.top; 3919 rangeX = mScrollingLayerRect.right; 3920 rangeY = mScrollingLayerRect.bottom; 3921 // No overscrolling for layers. 3922 overflingDistance = 0; 3923 } 3924 3925 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3926 rangeX, rangeY, 3927 overflingDistance, overflingDistance, false); 3928 3929 if (mOverScrollGlow != null) { 3930 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3931 } 3932 } else { 3933 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3934 mScrollX = x; 3935 mScrollY = y; 3936 } else { 3937 // Update the layer position instead of WebView. 3938 scrollLayerTo(x, y); 3939 } 3940 abortAnimation(); 3941 nativeSetIsScrolling(false); 3942 if (!mBlockWebkitViewMessages) { 3943 WebViewCore.resumePriority(); 3944 if (!mSelectingText) { 3945 WebViewCore.resumeUpdatePicture(mWebViewCore); 3946 } 3947 } 3948 if (oldX != mScrollX || oldY != mScrollY) { 3949 sendOurVisibleRect(); 3950 } 3951 } 3952 } else { 3953 super.computeScroll(); 3954 } 3955 } 3956 3957 private void scrollLayerTo(int x, int y) { 3958 if (x == mScrollingLayerRect.left && y == mScrollingLayerRect.top) { 3959 return; 3960 } 3961 if (mSelectingText) { 3962 int dx = mScrollingLayerRect.left - x; 3963 int dy = mScrollingLayerRect.top - y; 3964 if (mSelectCursorBaseLayerId == mCurrentScrollingLayerId) { 3965 mSelectCursorBase.offset(dx, dy); 3966 } 3967 if (mSelectCursorExtentLayerId == mCurrentScrollingLayerId) { 3968 mSelectCursorExtent.offset(dx, dy); 3969 } 3970 } 3971 nativeScrollLayer(mCurrentScrollingLayerId, x, y); 3972 mScrollingLayerRect.left = x; 3973 mScrollingLayerRect.top = y; 3974 mWebViewCore.sendMessage(WebViewCore.EventHub.SCROLL_LAYER, mCurrentScrollingLayerId, 3975 mScrollingLayerRect); 3976 onScrollChanged(mScrollX, mScrollY, mScrollX, mScrollY); 3977 invalidate(); 3978 } 3979 3980 private static int computeDuration(int dx, int dy) { 3981 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3982 int duration = distance * 1000 / STD_SPEED; 3983 return Math.min(duration, MAX_DURATION); 3984 } 3985 3986 // helper to pin the scrollBy parameters (already in view coordinates) 3987 // returns true if the scroll was changed 3988 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3989 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3990 } 3991 // helper to pin the scrollTo parameters (already in view coordinates) 3992 // returns true if the scroll was changed 3993 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3994 x = pinLocX(x); 3995 y = pinLocY(y); 3996 int dx = x - mScrollX; 3997 int dy = y - mScrollY; 3998 3999 if ((dx | dy) == 0) { 4000 return false; 4001 } 4002 abortAnimation(); 4003 if (animate) { 4004 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 4005 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 4006 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 4007 awakenScrollBars(mScroller.getDuration()); 4008 invalidate(); 4009 } else { 4010 scrollTo(x, y); 4011 } 4012 return true; 4013 } 4014 4015 // Scale from content to view coordinates, and pin. 4016 // Also called by jni webview.cpp 4017 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 4018 if (mDrawHistory) { 4019 // disallow WebView to change the scroll position as History Picture 4020 // is used in the view system. 4021 // TODO: as we switchOutDrawHistory when trackball or navigation 4022 // keys are hit, this should be safe. Right? 4023 return false; 4024 } 4025 cx = contentToViewDimension(cx); 4026 cy = contentToViewDimension(cy); 4027 if (mHeightCanMeasure) { 4028 // move our visible rect according to scroll request 4029 if (cy != 0) { 4030 Rect tempRect = new Rect(); 4031 calcOurVisibleRect(tempRect); 4032 tempRect.offset(cx, cy); 4033 requestRectangleOnScreen(tempRect); 4034 } 4035 // FIXME: We scroll horizontally no matter what because currently 4036 // ScrollView and ListView will not scroll horizontally. 4037 // FIXME: Why do we only scroll horizontally if there is no 4038 // vertical scroll? 4039// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 4040 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 4041 } else { 4042 return pinScrollBy(cx, cy, animate, 0); 4043 } 4044 } 4045 4046 /** 4047 * Called by CallbackProxy when the page starts loading. 4048 * @param url The URL of the page which has started loading. 4049 */ 4050 /* package */ void onPageStarted(String url) { 4051 // every time we start a new page, we want to reset the 4052 // WebView certificate: if the new site is secure, we 4053 // will reload it and get a new certificate set; 4054 // if the new site is not secure, the certificate must be 4055 // null, and that will be the case 4056 setCertificate(null); 4057 4058 // reset the flag since we set to true in if need after 4059 // loading is see onPageFinished(Url) 4060 mAccessibilityScriptInjected = false; 4061 } 4062 4063 /** 4064 * Called by CallbackProxy when the page finishes loading. 4065 * @param url The URL of the page which has finished loading. 4066 */ 4067 /* package */ void onPageFinished(String url) { 4068 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 4069 // If the user is now on a different page, or has scrolled the page 4070 // past the point where the title bar is offscreen, ignore the 4071 // scroll request. 4072 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 4073 && mScrollX == 0 && mScrollY == 0) { 4074 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 4075 SLIDE_TITLE_DURATION); 4076 } 4077 mPageThatNeedsToSlideTitleBarOffScreen = null; 4078 } 4079 mZoomManager.onPageFinished(url); 4080 injectAccessibilityForUrl(url); 4081 } 4082 4083 /** 4084 * This method injects accessibility in the loaded document if accessibility 4085 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 4086 * If no URL specific script is found or JavaScript is disabled we fallback to 4087 * the default {@link AccessibilityInjector} implementation. 4088 * </p> 4089 * If the URL has the "axs" paramter set to 1 it has already done the 4090 * script injection so we do nothing. If the parameter is set to 0 4091 * the URL opts out accessibility script injection so we fall back to 4092 * the default {@link AccessibilityInjector}. 4093 * </p> 4094 * Note: If the user has not opted-in the accessibility script injection no scripts 4095 * are injected rather the default {@link AccessibilityInjector} implementation 4096 * is used. 4097 * 4098 * @param url The URL loaded by this {@link WebView}. 4099 */ 4100 private void injectAccessibilityForUrl(String url) { 4101 if (mWebViewCore == null) { 4102 return; 4103 } 4104 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 4105 4106 if (!accessibilityManager.isEnabled()) { 4107 // it is possible that accessibility was turned off between reloads 4108 ensureAccessibilityScriptInjectorInstance(false); 4109 return; 4110 } 4111 4112 if (!getSettings().getJavaScriptEnabled()) { 4113 // no JS so we fallback to the basic buil-in support 4114 ensureAccessibilityScriptInjectorInstance(true); 4115 return; 4116 } 4117 4118 // check the URL "axs" parameter to choose appropriate action 4119 int axsParameterValue = getAxsUrlParameterValue(url); 4120 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 4121 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 4122 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 4123 if (onDeviceScriptInjectionEnabled) { 4124 ensureAccessibilityScriptInjectorInstance(false); 4125 // neither script injected nor script injection opted out => we inject 4126 loadUrl(getScreenReaderInjectingJs()); 4127 // TODO: Set this flag after successfull script injection. Maybe upon injection 4128 // the chooser should update the meta tag and we check it to declare success 4129 mAccessibilityScriptInjected = true; 4130 } else { 4131 // injection disabled so we fallback to the basic built-in support 4132 ensureAccessibilityScriptInjectorInstance(true); 4133 } 4134 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 4135 // injection opted out so we fallback to the basic buil-in support 4136 ensureAccessibilityScriptInjectorInstance(true); 4137 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 4138 ensureAccessibilityScriptInjectorInstance(false); 4139 // the URL provides accessibility but we still need to add our generic script 4140 loadUrl(getScreenReaderInjectingJs()); 4141 } else { 4142 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 4143 } 4144 } 4145 4146 /** 4147 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 4148 * 4149 * @param present True to ensure an insance, false to ensure no instance. 4150 */ 4151 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 4152 if (present) { 4153 if (mAccessibilityInjector == null) { 4154 mAccessibilityInjector = new AccessibilityInjector(this); 4155 } 4156 } else { 4157 mAccessibilityInjector = null; 4158 } 4159 } 4160 4161 /** 4162 * Gets JavaScript that injects a screen-reader. 4163 * 4164 * @return The JavaScript snippet. 4165 */ 4166 private String getScreenReaderInjectingJs() { 4167 String screenReaderUrl = Settings.Secure.getString(mContext.getContentResolver(), 4168 Settings.Secure.ACCESSIBILITY_SCREEN_READER_URL); 4169 return String.format(ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE, screenReaderUrl); 4170 } 4171 4172 /** 4173 * Gets the "axs" URL parameter value. 4174 * 4175 * @param url A url to fetch the paramter from. 4176 * @return The parameter value if such, -1 otherwise. 4177 */ 4178 private int getAxsUrlParameterValue(String url) { 4179 if (mMatchAxsUrlParameterPattern == null) { 4180 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 4181 } 4182 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 4183 if (matcher.find()) { 4184 String keyValuePair = url.substring(matcher.start(), matcher.end()); 4185 return Integer.parseInt(keyValuePair.split("=")[1]); 4186 } 4187 return -1; 4188 } 4189 4190 /** 4191 * The URL of a page that sent a message to scroll the title bar off screen. 4192 * 4193 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 4194 * title bar off the screen. Sometimes, the scroll position is set before 4195 * the page finishes loading. Rather than scrolling while the page is still 4196 * loading, keep track of the URL and new scroll position so we can perform 4197 * the scroll once the page finishes loading. 4198 */ 4199 private String mPageThatNeedsToSlideTitleBarOffScreen; 4200 4201 /** 4202 * The destination Y scroll position to be used when the page finishes 4203 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 4204 */ 4205 private int mYDistanceToSlideTitleOffScreen; 4206 4207 // scale from content to view coordinates, and pin 4208 // return true if pin caused the final x/y different than the request cx/cy, 4209 // and a future scroll may reach the request cx/cy after our size has 4210 // changed 4211 // return false if the view scroll to the exact position as it is requested, 4212 // where negative numbers are taken to mean 0 4213 private boolean setContentScrollTo(int cx, int cy) { 4214 if (mDrawHistory) { 4215 // disallow WebView to change the scroll position as History Picture 4216 // is used in the view system. 4217 // One known case where this is called is that WebCore tries to 4218 // restore the scroll position. As history Picture already uses the 4219 // saved scroll position, it is ok to skip this. 4220 return false; 4221 } 4222 int vx; 4223 int vy; 4224 if ((cx | cy) == 0) { 4225 // If the page is being scrolled to (0,0), do not add in the title 4226 // bar's height, and simply scroll to (0,0). (The only other work 4227 // in contentToView_ is to multiply, so this would not change 0.) 4228 vx = 0; 4229 vy = 0; 4230 } else { 4231 vx = contentToViewX(cx); 4232 vy = contentToViewY(cy); 4233 } 4234// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 4235// vx + " " + vy + "]"); 4236 // Some mobile sites attempt to scroll the title bar off the page by 4237 // scrolling to (0,1). If we are at the top left corner of the 4238 // page, assume this is an attempt to scroll off the title bar, and 4239 // animate the title bar off screen slowly enough that the user can see 4240 // it. 4241 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 4242 && mTitleBar != null) { 4243 // FIXME: 100 should be defined somewhere as our max progress. 4244 if (getProgress() < 100) { 4245 // Wait to scroll the title bar off screen until the page has 4246 // finished loading. Keep track of the URL and the destination 4247 // Y position 4248 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 4249 mYDistanceToSlideTitleOffScreen = vy; 4250 } else { 4251 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 4252 } 4253 // Since we are animating, we have not yet reached the desired 4254 // scroll position. Do not return true to request another attempt 4255 return false; 4256 } 4257 pinScrollTo(vx, vy, false, 0); 4258 // If the request was to scroll to a negative coordinate, treat it as if 4259 // it was a request to scroll to 0 4260 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 4261 return true; 4262 } else { 4263 return false; 4264 } 4265 } 4266 4267 // scale from content to view coordinates, and pin 4268 private void spawnContentScrollTo(int cx, int cy) { 4269 if (mDrawHistory) { 4270 // disallow WebView to change the scroll position as History Picture 4271 // is used in the view system. 4272 return; 4273 } 4274 int vx = contentToViewX(cx); 4275 int vy = contentToViewY(cy); 4276 pinScrollTo(vx, vy, true, 0); 4277 } 4278 4279 /** 4280 * These are from webkit, and are in content coordinate system (unzoomed) 4281 */ 4282 private void contentSizeChanged(boolean updateLayout) { 4283 // suppress 0,0 since we usually see real dimensions soon after 4284 // this avoids drawing the prev content in a funny place. If we find a 4285 // way to consolidate these notifications, this check may become 4286 // obsolete 4287 if ((mContentWidth | mContentHeight) == 0) { 4288 return; 4289 } 4290 4291 if (mHeightCanMeasure) { 4292 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 4293 || updateLayout) { 4294 requestLayout(); 4295 } 4296 } else if (mWidthCanMeasure) { 4297 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 4298 || updateLayout) { 4299 requestLayout(); 4300 } 4301 } else { 4302 // If we don't request a layout, try to send our view size to the 4303 // native side to ensure that WebCore has the correct dimensions. 4304 sendViewSizeZoom(false); 4305 } 4306 } 4307 4308 /** 4309 * Set the WebViewClient that will receive various notifications and 4310 * requests. This will replace the current handler. 4311 * @param client An implementation of WebViewClient. 4312 */ 4313 public void setWebViewClient(WebViewClient client) { 4314 checkThread(); 4315 mCallbackProxy.setWebViewClient(client); 4316 } 4317 4318 /** 4319 * Gets the WebViewClient 4320 * @return the current WebViewClient instance. 4321 * 4322 * @hide This is an implementation detail. 4323 */ 4324 public WebViewClient getWebViewClient() { 4325 return mCallbackProxy.getWebViewClient(); 4326 } 4327 4328 /** 4329 * Register the interface to be used when content can not be handled by 4330 * the rendering engine, and should be downloaded instead. This will replace 4331 * the current handler. 4332 * @param listener An implementation of DownloadListener. 4333 */ 4334 public void setDownloadListener(DownloadListener listener) { 4335 checkThread(); 4336 mCallbackProxy.setDownloadListener(listener); 4337 } 4338 4339 /** 4340 * Set the chrome handler. This is an implementation of WebChromeClient for 4341 * use in handling JavaScript dialogs, favicons, titles, and the progress. 4342 * This will replace the current handler. 4343 * @param client An implementation of WebChromeClient. 4344 */ 4345 public void setWebChromeClient(WebChromeClient client) { 4346 checkThread(); 4347 mCallbackProxy.setWebChromeClient(client); 4348 } 4349 4350 /** 4351 * Gets the chrome handler. 4352 * @return the current WebChromeClient instance. 4353 * 4354 * @hide This is an implementation detail. 4355 */ 4356 public WebChromeClient getWebChromeClient() { 4357 return mCallbackProxy.getWebChromeClient(); 4358 } 4359 4360 /** 4361 * Set the back/forward list client. This is an implementation of 4362 * WebBackForwardListClient for handling new items and changes in the 4363 * history index. 4364 * @param client An implementation of WebBackForwardListClient. 4365 * {@hide} 4366 */ 4367 public void setWebBackForwardListClient(WebBackForwardListClient client) { 4368 mCallbackProxy.setWebBackForwardListClient(client); 4369 } 4370 4371 /** 4372 * Gets the WebBackForwardListClient. 4373 * {@hide} 4374 */ 4375 public WebBackForwardListClient getWebBackForwardListClient() { 4376 return mCallbackProxy.getWebBackForwardListClient(); 4377 } 4378 4379 /** 4380 * Set the Picture listener. This is an interface used to receive 4381 * notifications of a new Picture. 4382 * @param listener An implementation of WebView.PictureListener. 4383 * @deprecated This method is now obsolete. 4384 */ 4385 @Deprecated 4386 public void setPictureListener(PictureListener listener) { 4387 checkThread(); 4388 mPictureListener = listener; 4389 } 4390 4391 /** 4392 * {@hide} 4393 */ 4394 /* FIXME: Debug only! Remove for SDK! */ 4395 public void externalRepresentation(Message callback) { 4396 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 4397 } 4398 4399 /** 4400 * {@hide} 4401 */ 4402 /* FIXME: Debug only! Remove for SDK! */ 4403 public void documentAsText(Message callback) { 4404 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 4405 } 4406 4407 /** 4408 * This method injects the supplied Java object into the WebView. The 4409 * object is injected into the JavaScript context of the main frame, using 4410 * the supplied name. This allows the Java object to be accessed from 4411 * JavaScript. Note that that injected objects will not appear in 4412 * JavaScript until the page is next (re)loaded. For example: 4413 * <pre> webView.addJavascriptInterface(new Object(), "injectedObject"); 4414 * webView.loadData("<!DOCTYPE html><title></title>", "text/html", null); 4415 * webView.loadUrl("javascript:alert(injectedObject.toString())");</pre> 4416 * <p><strong>IMPORTANT:</strong> 4417 * <ul> 4418 * <li> addJavascriptInterface() can be used to allow JavaScript to control 4419 * the host application. This is a powerful feature, but also presents a 4420 * security risk. Use of this method in a WebView containing untrusted 4421 * content could allow an attacker to manipulate the host application in 4422 * unintended ways, executing Java code with the permissions of the host 4423 * application. Use extreme care when using this method in a WebView which 4424 * could contain untrusted content. 4425 * <li> JavaScript interacts with Java object on a private, background 4426 * thread of the WebView. Care is therefore required to maintain thread 4427 * safety.</li> 4428 * </ul></p> 4429 * @param object The Java object to inject into the WebView's JavaScript 4430 * context. Null values are ignored. 4431 * @param name The name used to expose the instance in JavaScript. 4432 */ 4433 public void addJavascriptInterface(Object object, String name) { 4434 checkThread(); 4435 if (object == null) { 4436 return; 4437 } 4438 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4439 arg.mObject = object; 4440 arg.mInterfaceName = name; 4441 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 4442 } 4443 4444 /** 4445 * Removes a previously added JavaScript interface with the given name. 4446 * @param interfaceName The name of the interface to remove. 4447 */ 4448 public void removeJavascriptInterface(String interfaceName) { 4449 checkThread(); 4450 if (mWebViewCore != null) { 4451 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4452 arg.mInterfaceName = interfaceName; 4453 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 4454 } 4455 } 4456 4457 /** 4458 * Return the WebSettings object used to control the settings for this 4459 * WebView. 4460 * @return A WebSettings object that can be used to control this WebView's 4461 * settings. 4462 */ 4463 public WebSettings getSettings() { 4464 checkThread(); 4465 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4466 } 4467 4468 /** 4469 * Return the list of currently loaded plugins. 4470 * @return The list of currently loaded plugins. 4471 * 4472 * @hide 4473 * @deprecated This was used for Gears, which has been deprecated. 4474 */ 4475 @Deprecated 4476 public static synchronized PluginList getPluginList() { 4477 checkThread(); 4478 return new PluginList(); 4479 } 4480 4481 /** 4482 * @hide 4483 * @deprecated This was used for Gears, which has been deprecated. 4484 */ 4485 @Deprecated 4486 public void refreshPlugins(boolean reloadOpenPages) { 4487 checkThread(); 4488 } 4489 4490 //------------------------------------------------------------------------- 4491 // Override View methods 4492 //------------------------------------------------------------------------- 4493 4494 @Override 4495 protected void finalize() throws Throwable { 4496 try { 4497 if (mNativeClass != 0) { 4498 mPrivateHandler.post(new Runnable() { 4499 @Override 4500 public void run() { 4501 destroy(); 4502 } 4503 }); 4504 } 4505 } finally { 4506 super.finalize(); 4507 } 4508 } 4509 4510 @Override 4511 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 4512 if (child == mTitleBar) { 4513 // When drawing the title bar, move it horizontally to always show 4514 // at the top of the WebView. 4515 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 4516 int newTop = 0; 4517 if (mTitleGravity == Gravity.NO_GRAVITY) { 4518 newTop = Math.min(0, mScrollY); 4519 } else if (mTitleGravity == Gravity.TOP) { 4520 newTop = mScrollY; 4521 } 4522 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 4523 mTitleBar.setTop(newTop); 4524 } 4525 return super.drawChild(canvas, child, drawingTime); 4526 } 4527 4528 private void drawContent(Canvas canvas, boolean drawRings) { 4529 drawCoreAndCursorRing(canvas, mBackgroundColor, 4530 mDrawCursorRing && drawRings); 4531 } 4532 4533 /** 4534 * Draw the background when beyond bounds 4535 * @param canvas Canvas to draw into 4536 */ 4537 private void drawOverScrollBackground(Canvas canvas) { 4538 if (mOverScrollBackground == null) { 4539 mOverScrollBackground = new Paint(); 4540 Bitmap bm = BitmapFactory.decodeResource( 4541 mContext.getResources(), 4542 com.android.internal.R.drawable.status_bar_background); 4543 mOverScrollBackground.setShader(new BitmapShader(bm, 4544 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4545 mOverScrollBorder = new Paint(); 4546 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4547 mOverScrollBorder.setStrokeWidth(0); 4548 mOverScrollBorder.setColor(0xffbbbbbb); 4549 } 4550 4551 int top = 0; 4552 int right = computeRealHorizontalScrollRange(); 4553 int bottom = top + computeRealVerticalScrollRange(); 4554 // first draw the background and anchor to the top of the view 4555 canvas.save(); 4556 canvas.translate(mScrollX, mScrollY); 4557 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4558 - mScrollY, Region.Op.DIFFERENCE); 4559 canvas.drawPaint(mOverScrollBackground); 4560 canvas.restore(); 4561 // then draw the border 4562 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4563 // next clip the region for the content 4564 canvas.clipRect(0, top, right, bottom); 4565 } 4566 4567 @Override 4568 protected void onDraw(Canvas canvas) { 4569 if (inFullScreenMode()) { 4570 return; // no need to draw anything if we aren't visible. 4571 } 4572 // if mNativeClass is 0, the WebView is either destroyed or not 4573 // initialized. In either case, just draw the background color and return 4574 if (mNativeClass == 0) { 4575 canvas.drawColor(mBackgroundColor); 4576 return; 4577 } 4578 4579 // if both mContentWidth and mContentHeight are 0, it means there is no 4580 // valid Picture passed to WebView yet. This can happen when WebView 4581 // just starts. Draw the background and return. 4582 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4583 canvas.drawColor(mBackgroundColor); 4584 return; 4585 } 4586 4587 if (canvas.isHardwareAccelerated()) { 4588 mZoomManager.setHardwareAccelerated(); 4589 } else { 4590 mWebViewCore.resumeWebKitDraw(); 4591 } 4592 4593 int saveCount = canvas.save(); 4594 if (mInOverScrollMode && !getSettings() 4595 .getUseWebViewBackgroundForOverscrollBackground()) { 4596 drawOverScrollBackground(canvas); 4597 } 4598 if (mTitleBar != null) { 4599 canvas.translate(0, getTitleHeight()); 4600 } 4601 boolean drawJavaRings = !mTouchHighlightRegion.isEmpty() 4602 && (mTouchMode == TOUCH_INIT_MODE 4603 || mTouchMode == TOUCH_SHORTPRESS_START_MODE 4604 || mTouchMode == TOUCH_SHORTPRESS_MODE 4605 || mTouchMode == TOUCH_DONE_MODE); 4606 boolean drawNativeRings = !drawJavaRings; 4607 if (sDisableNavcache) { 4608 drawNativeRings = !drawJavaRings && !isInTouchMode(); 4609 } 4610 drawContent(canvas, drawNativeRings); 4611 canvas.restoreToCount(saveCount); 4612 4613 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4614 invalidate(); 4615 } 4616 mWebViewCore.signalRepaintDone(); 4617 4618 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4619 invalidate(); 4620 } 4621 4622 // paint the highlight in the end 4623 if (drawJavaRings) { 4624 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 4625 if (delay < ViewConfiguration.getTapTimeout()) { 4626 Rect r = mTouchHighlightRegion.getBounds(); 4627 postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 4628 } else { 4629 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4630 Rect r = new Rect(); 4631 while (iter.next(r)) { 4632 canvas.drawRect(r, mTouchHightlightPaint); 4633 } 4634 } 4635 } 4636 if (DEBUG_TOUCH_HIGHLIGHT) { 4637 if (getSettings().getNavDump()) { 4638 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4639 if (mTouchCrossHairColor == null) { 4640 mTouchCrossHairColor = new Paint(); 4641 mTouchCrossHairColor.setColor(Color.RED); 4642 } 4643 canvas.drawLine(mTouchHighlightX - mNavSlop, 4644 mTouchHighlightY - mNavSlop, mTouchHighlightX 4645 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4646 + 1, mTouchCrossHairColor); 4647 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4648 mTouchHighlightY - mNavSlop, mTouchHighlightX 4649 - mNavSlop, 4650 mTouchHighlightY + mNavSlop + 1, 4651 mTouchCrossHairColor); 4652 } 4653 } 4654 } 4655 } 4656 4657 private void removeTouchHighlight() { 4658 mWebViewCore.removeMessages(EventHub.HIT_TEST); 4659 mPrivateHandler.removeMessages(HIT_TEST_RESULT); 4660 setTouchHighlightRects(null); 4661 } 4662 4663 @Override 4664 public void setLayoutParams(ViewGroup.LayoutParams params) { 4665 if (params.height == LayoutParams.WRAP_CONTENT) { 4666 mWrapContent = true; 4667 } 4668 super.setLayoutParams(params); 4669 } 4670 4671 @Override 4672 public boolean performLongClick() { 4673 // performLongClick() is the result of a delayed message. If we switch 4674 // to windows overview, the WebView will be temporarily removed from the 4675 // view system. In that case, do nothing. 4676 if (getParent() == null) return false; 4677 4678 // A multi-finger gesture can look like a long press; make sure we don't take 4679 // long press actions if we're scaling. 4680 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4681 if (detector != null && detector.isInProgress()) { 4682 return false; 4683 } 4684 4685 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4686 // Send the click so that the textfield is in focus 4687 centerKeyPressOnTextField(); 4688 rebuildWebTextView(); 4689 } else { 4690 clearTextEntry(); 4691 } 4692 if (inEditingMode()) { 4693 // Since we just called rebuildWebTextView, the layout is not set 4694 // properly. Update it so it can correctly find the word to select. 4695 mWebTextView.ensureLayout(); 4696 // Provide a touch down event to WebTextView, which will allow it 4697 // to store the location to use in performLongClick. 4698 AbsoluteLayout.LayoutParams params 4699 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4700 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4701 mLastTouchTime, MotionEvent.ACTION_DOWN, 4702 mLastTouchX - params.x + mScrollX, 4703 mLastTouchY - params.y + mScrollY, 0); 4704 mWebTextView.dispatchTouchEvent(fake); 4705 return mWebTextView.performLongClick(); 4706 } 4707 if (mSelectingText) return false; // long click does nothing on selection 4708 /* if long click brings up a context menu, the super function 4709 * returns true and we're done. Otherwise, nothing happened when 4710 * the user clicked. */ 4711 if (super.performLongClick()) { 4712 return true; 4713 } 4714 /* In the case where the application hasn't already handled the long 4715 * click action, look for a word under the click. If one is found, 4716 * animate the text selection into view. 4717 * FIXME: no animation code yet */ 4718 final boolean isSelecting = selectText(); 4719 if (isSelecting) { 4720 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4721 } else if (focusCandidateIsEditableText()) { 4722 mSelectCallback = new SelectActionModeCallback(); 4723 mSelectCallback.setWebView(this); 4724 mSelectCallback.setTextSelected(false); 4725 startActionMode(mSelectCallback); 4726 } 4727 return isSelecting; 4728 } 4729 4730 /** 4731 * Select the word at the last click point. 4732 * 4733 * @hide This is an implementation detail. 4734 */ 4735 public boolean selectText() { 4736 int x = viewToContentX(mLastTouchX + mScrollX); 4737 int y = viewToContentY(mLastTouchY + mScrollY); 4738 return selectText(x, y); 4739 } 4740 4741 /** 4742 * Select the word at the indicated content coordinates. 4743 */ 4744 boolean selectText(int x, int y) { 4745 mWebViewCore.sendMessage(EventHub.SELECT_WORD_AT, x, y); 4746 return true; 4747 } 4748 4749 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4750 4751 @Override 4752 protected void onConfigurationChanged(Configuration newConfig) { 4753 mCachedOverlappingActionModeHeight = -1; 4754 if (mSelectingText && mOrientation != newConfig.orientation) { 4755 selectionDone(); 4756 } 4757 mOrientation = newConfig.orientation; 4758 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 4759 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4760 } 4761 } 4762 4763 /** 4764 * Keep track of the Callback so we can end its ActionMode or remove its 4765 * titlebar. 4766 */ 4767 private SelectActionModeCallback mSelectCallback; 4768 4769 // These values are possible options for didUpdateWebTextViewDimensions. 4770 private static final int FULLY_ON_SCREEN = 0; 4771 private static final int INTERSECTS_SCREEN = 1; 4772 private static final int ANYWHERE = 2; 4773 4774 /** 4775 * Check to see if the focused textfield/textarea is still on screen. If it 4776 * is, update the the dimensions and location of WebTextView. Otherwise, 4777 * remove the WebTextView. Should be called when the zoom level changes. 4778 * @param intersection How to determine whether the textfield/textarea is 4779 * still on screen. 4780 * @return boolean True if the textfield/textarea is still on screen and the 4781 * dimensions/location of WebTextView have been updated. 4782 */ 4783 private boolean didUpdateWebTextViewDimensions(int intersection) { 4784 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4785 Rect vBox = contentToViewRect(contentBounds); 4786 Rect visibleRect = new Rect(); 4787 calcOurVisibleRect(visibleRect); 4788 offsetByLayerScrollPosition(vBox); 4789 // If the textfield is on screen, place the WebTextView in 4790 // its new place, accounting for our new scroll/zoom values, 4791 // and adjust its textsize. 4792 boolean onScreen; 4793 switch (intersection) { 4794 case FULLY_ON_SCREEN: 4795 onScreen = visibleRect.contains(vBox); 4796 break; 4797 case INTERSECTS_SCREEN: 4798 onScreen = Rect.intersects(visibleRect, vBox); 4799 break; 4800 case ANYWHERE: 4801 onScreen = true; 4802 break; 4803 default: 4804 throw new AssertionError( 4805 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4806 } 4807 if (onScreen) { 4808 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4809 vBox.height()); 4810 mWebTextView.updateTextSize(); 4811 updateWebTextViewPadding(); 4812 return true; 4813 } else { 4814 // The textfield is now off screen. The user probably 4815 // was not zooming to see the textfield better. Remove 4816 // the WebTextView. If the user types a key, and the 4817 // textfield is still in focus, we will reconstruct 4818 // the WebTextView and scroll it back on screen. 4819 mWebTextView.remove(); 4820 return false; 4821 } 4822 } 4823 4824 private void offsetByLayerScrollPosition(Rect box) { 4825 if ((mCurrentScrollingLayerId != 0) 4826 && (mCurrentScrollingLayerId == nativeFocusCandidateLayerId())) { 4827 box.offsetTo(box.left - mScrollingLayerRect.left, 4828 box.top - mScrollingLayerRect.top); 4829 } 4830 } 4831 4832 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4833 boolean isPictureAfterFirstLayout) { 4834 if (mNativeClass == 0) 4835 return; 4836 boolean queueFull; 4837 queueFull = nativeSetBaseLayer(mNativeClass, layer, invalRegion, 4838 showVisualIndicator, isPictureAfterFirstLayout); 4839 4840 if (layer == 0 || isPictureAfterFirstLayout) { 4841 mWebViewCore.resumeWebKitDraw(); 4842 } else if (queueFull) { 4843 // temporarily disable webkit draw throttling 4844 // TODO: re-enable 4845 // mWebViewCore.pauseWebKitDraw(); 4846 } 4847 4848 if (mHTML5VideoViewProxy != null) { 4849 mHTML5VideoViewProxy.setBaseLayer(layer); 4850 } 4851 } 4852 4853 int getBaseLayer() { 4854 if (mNativeClass == 0) { 4855 return 0; 4856 } 4857 return nativeGetBaseLayer(); 4858 } 4859 4860 private void onZoomAnimationStart() { 4861 // If it is in password mode, turn it off so it does not draw misplaced. 4862 if (inEditingMode()) { 4863 mWebTextView.setVisibility(INVISIBLE); 4864 } 4865 } 4866 4867 private void onZoomAnimationEnd() { 4868 // adjust the edit text view if needed 4869 if (inEditingMode() 4870 && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) { 4871 // If it is a password field, start drawing the WebTextView once 4872 // again. 4873 mWebTextView.setVisibility(VISIBLE); 4874 } 4875 } 4876 4877 void onFixedLengthZoomAnimationStart() { 4878 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4879 onZoomAnimationStart(); 4880 } 4881 4882 void onFixedLengthZoomAnimationEnd() { 4883 if (!mBlockWebkitViewMessages && !mSelectingText) { 4884 WebViewCore.resumeUpdatePicture(mWebViewCore); 4885 } 4886 onZoomAnimationEnd(); 4887 } 4888 4889 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4890 Paint.DITHER_FLAG | 4891 Paint.SUBPIXEL_TEXT_FLAG; 4892 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4893 Paint.DITHER_FLAG; 4894 4895 private final DrawFilter mZoomFilter = 4896 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4897 // If we need to trade better quality for speed, set mScrollFilter to null 4898 private final DrawFilter mScrollFilter = 4899 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4900 4901 private void drawCoreAndCursorRing(Canvas canvas, int color, 4902 boolean drawCursorRing) { 4903 if (mDrawHistory) { 4904 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4905 canvas.drawPicture(mHistoryPicture); 4906 return; 4907 } 4908 if (mNativeClass == 0) return; 4909 4910 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4911 boolean animateScroll = ((!mScroller.isFinished() 4912 || mVelocityTracker != null) 4913 && (mTouchMode != TOUCH_DRAG_MODE || 4914 mHeldMotionless != MOTIONLESS_TRUE)) 4915 || mDeferTouchMode == TOUCH_DRAG_MODE; 4916 if (mTouchMode == TOUCH_DRAG_MODE) { 4917 if (mHeldMotionless == MOTIONLESS_PENDING) { 4918 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4919 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4920 mHeldMotionless = MOTIONLESS_FALSE; 4921 } 4922 if (mHeldMotionless == MOTIONLESS_FALSE) { 4923 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4924 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4925 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4926 .obtainMessage(AWAKEN_SCROLL_BARS), 4927 ViewConfiguration.getScrollDefaultDelay()); 4928 mHeldMotionless = MOTIONLESS_PENDING; 4929 } 4930 } 4931 int saveCount = canvas.save(); 4932 if (animateZoom) { 4933 mZoomManager.animateZoom(canvas); 4934 } else if (!canvas.isHardwareAccelerated()) { 4935 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4936 } 4937 4938 boolean UIAnimationsRunning = false; 4939 // Currently for each draw we compute the animation values; 4940 // We may in the future decide to do that independently. 4941 if (mNativeClass != 0 && !canvas.isHardwareAccelerated() 4942 && nativeEvaluateLayersAnimations(mNativeClass)) { 4943 UIAnimationsRunning = true; 4944 // If we have unfinished (or unstarted) animations, 4945 // we ask for a repaint. We only need to do this in software 4946 // rendering (with hardware rendering we already have a different 4947 // method of requesting a repaint) 4948 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 4949 invalidate(); 4950 } 4951 4952 // decide which adornments to draw 4953 int extras = DRAW_EXTRAS_NONE; 4954 if (mFindIsUp) { 4955 extras = DRAW_EXTRAS_FIND; 4956 } else if (mSelectingText) { 4957 extras = DRAW_EXTRAS_SELECTION; 4958 } else if (drawCursorRing) { 4959 extras = DRAW_EXTRAS_CURSOR_RING; 4960 } 4961 if (DebugFlags.WEB_VIEW) { 4962 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4963 + " mSelectingText=" + mSelectingText 4964 + " nativePageShouldHandleShiftAndArrows()=" 4965 + nativePageShouldHandleShiftAndArrows() 4966 + " animateZoom=" + animateZoom 4967 + " extras=" + extras); 4968 } 4969 4970 calcOurContentVisibleRectF(mVisibleContentRect); 4971 if (canvas.isHardwareAccelerated()) { 4972 Rect glRectViewport = mGLViewportEmpty ? null : mGLRectViewport; 4973 Rect viewRectViewport = mGLViewportEmpty ? null : mViewRectViewport; 4974 4975 int functor = nativeGetDrawGLFunction(mNativeClass, glRectViewport, 4976 viewRectViewport, mVisibleContentRect, getScale(), extras); 4977 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4978 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 4979 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 4980 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 4981 } 4982 4983 } else { 4984 DrawFilter df = null; 4985 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4986 df = mZoomFilter; 4987 } else if (animateScroll) { 4988 df = mScrollFilter; 4989 } 4990 canvas.setDrawFilter(df); 4991 // XXX: Revisit splitting content. Right now it causes a 4992 // synchronization problem with layers. 4993 int content = nativeDraw(canvas, mVisibleContentRect, color, 4994 extras, false); 4995 canvas.setDrawFilter(null); 4996 if (!mBlockWebkitViewMessages && content != 0) { 4997 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4998 } 4999 } 5000 5001 canvas.restoreToCount(saveCount); 5002 if (mSelectingText) { 5003 drawTextSelectionHandles(canvas); 5004 } 5005 5006 if (extras == DRAW_EXTRAS_CURSOR_RING) { 5007 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 5008 mTouchMode = TOUCH_SHORTPRESS_MODE; 5009 } 5010 } 5011 if (mFocusSizeChanged) { 5012 mFocusSizeChanged = false; 5013 // If we are zooming, this will get handled above, when the zoom 5014 // finishes. We also do not need to do this unless the WebTextView 5015 // is showing. With hardware acceleration, the pageSwapCallback() 5016 // updates the WebTextView position in sync with page swapping 5017 if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) { 5018 didUpdateWebTextViewDimensions(ANYWHERE); 5019 } 5020 } 5021 } 5022 5023 private void drawTextSelectionHandles(Canvas canvas) { 5024 if (mSelectHandleLeft == null) { 5025 mSelectHandleLeft = mContext.getResources().getDrawable( 5026 com.android.internal.R.drawable.text_select_handle_left); 5027 } 5028 int[] handles = new int[4]; 5029 getSelectionHandles(handles); 5030 int start_x = contentToViewDimension(handles[0]); 5031 int start_y = contentToViewDimension(handles[1]); 5032 int end_x = contentToViewDimension(handles[2]); 5033 int end_y = contentToViewDimension(handles[3]); 5034 // Magic formula copied from TextView 5035 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 5036 mSelectHandleLeft.setBounds(start_x, start_y, 5037 start_x + mSelectHandleLeft.getIntrinsicWidth(), 5038 start_y + mSelectHandleLeft.getIntrinsicHeight()); 5039 if (mSelectHandleRight == null) { 5040 mSelectHandleRight = mContext.getResources().getDrawable( 5041 com.android.internal.R.drawable.text_select_handle_right); 5042 } 5043 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 5044 mSelectHandleRight.setBounds(end_x, end_y, 5045 end_x + mSelectHandleRight.getIntrinsicWidth(), 5046 end_y + mSelectHandleRight.getIntrinsicHeight()); 5047 mSelectHandleLeft.draw(canvas); 5048 mSelectHandleRight.draw(canvas); 5049 } 5050 5051 /** 5052 * Takes an int[4] array as an output param with the values being 5053 * startX, startY, endX, endY 5054 */ 5055 private void getSelectionHandles(int[] handles) { 5056 handles[0] = mSelectCursorBase.right; 5057 handles[1] = mSelectCursorBase.bottom - 5058 (mSelectCursorBase.height() / 4); 5059 handles[2] = mSelectCursorExtent.left; 5060 handles[3] = mSelectCursorExtent.bottom 5061 - (mSelectCursorExtent.height() / 4); 5062 if (!nativeIsBaseFirst(mNativeClass)) { 5063 int swap = handles[0]; 5064 handles[0] = handles[2]; 5065 handles[2] = swap; 5066 swap = handles[1]; 5067 handles[1] = handles[3]; 5068 handles[3] = swap; 5069 } 5070 } 5071 5072 // draw history 5073 private boolean mDrawHistory = false; 5074 private Picture mHistoryPicture = null; 5075 private int mHistoryWidth = 0; 5076 private int mHistoryHeight = 0; 5077 5078 // Only check the flag, can be called from WebCore thread 5079 boolean drawHistory() { 5080 return mDrawHistory; 5081 } 5082 5083 int getHistoryPictureWidth() { 5084 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 5085 } 5086 5087 // Should only be called in UI thread 5088 void switchOutDrawHistory() { 5089 if (null == mWebViewCore) return; // CallbackProxy may trigger this 5090 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 5091 mDrawHistory = false; 5092 mHistoryPicture = null; 5093 invalidate(); 5094 int oldScrollX = mScrollX; 5095 int oldScrollY = mScrollY; 5096 mScrollX = pinLocX(mScrollX); 5097 mScrollY = pinLocY(mScrollY); 5098 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 5099 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 5100 } else { 5101 sendOurVisibleRect(); 5102 } 5103 } 5104 } 5105 5106 WebViewCore.CursorData cursorData() { 5107 WebViewCore.CursorData result = cursorDataNoPosition(); 5108 Point position = nativeCursorPosition(); 5109 result.mX = position.x; 5110 result.mY = position.y; 5111 return result; 5112 } 5113 5114 WebViewCore.CursorData cursorDataNoPosition() { 5115 WebViewCore.CursorData result = new WebViewCore.CursorData(); 5116 result.mMoveGeneration = nativeMoveGeneration(); 5117 result.mFrame = nativeCursorFramePointer(); 5118 return result; 5119 } 5120 5121 /** 5122 * Delete text from start to end in the focused textfield. If there is no 5123 * focus, or if start == end, silently fail. If start and end are out of 5124 * order, swap them. 5125 * @param start Beginning of selection to delete. 5126 * @param end End of selection to delete. 5127 */ 5128 /* package */ void deleteSelection(int start, int end) { 5129 mTextGeneration++; 5130 WebViewCore.TextSelectionData data 5131 = new WebViewCore.TextSelectionData(start, end, 0); 5132 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 5133 data); 5134 } 5135 5136 /** 5137 * Set the selection to (start, end) in the focused textfield. If start and 5138 * end are out of order, swap them. 5139 * @param start Beginning of selection. 5140 * @param end End of selection. 5141 */ 5142 /* package */ void setSelection(int start, int end) { 5143 if (mWebViewCore != null) { 5144 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 5145 } 5146 } 5147 5148 @Override 5149 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 5150 outAttrs.inputType = EditorInfo.IME_FLAG_NO_FULLSCREEN 5151 | EditorInfo.TYPE_CLASS_TEXT 5152 | EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT 5153 | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE 5154 | EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT 5155 | EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES; 5156 outAttrs.imeOptions = EditorInfo.IME_ACTION_NONE; 5157 5158 if (mInputConnection == null) { 5159 mInputConnection = new WebViewInputConnection(); 5160 } 5161 outAttrs.initialCapsMode = mInputConnection.getCursorCapsMode(InputType.TYPE_CLASS_TEXT); 5162 return mInputConnection; 5163 } 5164 5165 /** 5166 * Called in response to a message from webkit telling us that the soft 5167 * keyboard should be launched. 5168 */ 5169 private void displaySoftKeyboard(boolean isTextView) { 5170 InputMethodManager imm = (InputMethodManager) 5171 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 5172 5173 // bring it back to the default level scale so that user can enter text 5174 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 5175 if (zoom) { 5176 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 5177 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 5178 } 5179 if (isTextView) { 5180 rebuildWebTextView(); 5181 if (inEditingMode()) { 5182 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 5183 if (zoom) { 5184 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 5185 } 5186 return; 5187 } 5188 } 5189 // Used by plugins and contentEditable. 5190 // Also used if the navigation cache is out of date, and 5191 // does not recognize that a textfield is in focus. In that 5192 // case, use WebView as the targeted view. 5193 // see http://b/issue?id=2457459 5194 imm.showSoftInput(this, 0); 5195 } 5196 5197 // Called by WebKit to instruct the UI to hide the keyboard 5198 private void hideSoftKeyboard() { 5199 InputMethodManager imm = InputMethodManager.peekInstance(); 5200 if (imm != null && (imm.isActive(this) 5201 || (inEditingMode() && imm.isActive(mWebTextView)))) { 5202 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 5203 } 5204 } 5205 5206 /* 5207 * This method checks the current focus and cursor and potentially rebuilds 5208 * mWebTextView to have the appropriate properties, such as password, 5209 * multiline, and what text it contains. It also removes it if necessary. 5210 */ 5211 /* package */ void rebuildWebTextView() { 5212 if (!sEnableWebTextView) { 5213 return; // always use WebKit's text entry 5214 } 5215 // If the WebView does not have focus, do nothing until it gains focus. 5216 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 5217 return; 5218 } 5219 boolean alreadyThere = inEditingMode(); 5220 // inEditingMode can only return true if mWebTextView is non-null, 5221 // so we can safely call remove() if (alreadyThere) 5222 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 5223 if (alreadyThere) { 5224 mWebTextView.remove(); 5225 } 5226 return; 5227 } 5228 // At this point, we know we have found an input field, so go ahead 5229 // and create the WebTextView if necessary. 5230 if (mWebTextView == null) { 5231 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 5232 // Initialize our generation number. 5233 mTextGeneration = 0; 5234 } 5235 mWebTextView.updateTextSize(); 5236 updateWebTextViewPosition(); 5237 String text = nativeFocusCandidateText(); 5238 int nodePointer = nativeFocusCandidatePointer(); 5239 // This needs to be called before setType, which may call 5240 // requestFormData, and it needs to have the correct nodePointer. 5241 mWebTextView.setNodePointer(nodePointer); 5242 mWebTextView.setType(nativeFocusCandidateType()); 5243 // Gravity needs to be set after setType 5244 mWebTextView.setGravityForRtl(nativeFocusCandidateIsRtlText()); 5245 if (null == text) { 5246 if (DebugFlags.WEB_VIEW) { 5247 Log.v(LOGTAG, "rebuildWebTextView null == text"); 5248 } 5249 text = ""; 5250 } 5251 mWebTextView.setTextAndKeepSelection(text); 5252 InputMethodManager imm = InputMethodManager.peekInstance(); 5253 if (imm != null && imm.isActive(mWebTextView)) { 5254 imm.restartInput(mWebTextView); 5255 mWebTextView.clearComposingText(); 5256 } 5257 if (isFocused()) { 5258 mWebTextView.requestFocus(); 5259 } 5260 } 5261 5262 private void updateWebTextViewPosition() { 5263 Rect visibleRect = new Rect(); 5264 calcOurContentVisibleRect(visibleRect); 5265 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 5266 // should be in content coordinates. 5267 Rect bounds = nativeFocusCandidateNodeBounds(); 5268 Rect vBox = contentToViewRect(bounds); 5269 offsetByLayerScrollPosition(vBox); 5270 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 5271 if (!Rect.intersects(bounds, visibleRect)) { 5272 revealSelection(); 5273 } 5274 updateWebTextViewPadding(); 5275 } 5276 5277 /** 5278 * Update the padding of mWebTextView based on the native textfield/textarea 5279 */ 5280 void updateWebTextViewPadding() { 5281 Rect paddingRect = nativeFocusCandidatePaddingRect(); 5282 if (paddingRect != null) { 5283 // Use contentToViewDimension since these are the dimensions of 5284 // the padding. 5285 mWebTextView.setPadding( 5286 contentToViewDimension(paddingRect.left), 5287 contentToViewDimension(paddingRect.top), 5288 contentToViewDimension(paddingRect.right), 5289 contentToViewDimension(paddingRect.bottom)); 5290 } 5291 } 5292 5293 /** 5294 * Tell webkit to put the cursor on screen. 5295 */ 5296 /* package */ void revealSelection() { 5297 if (mWebViewCore != null) { 5298 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 5299 } 5300 } 5301 5302 /** 5303 * Called by WebTextView to find saved form data associated with the 5304 * textfield 5305 * @param name Name of the textfield. 5306 * @param nodePointer Pointer to the node of the textfield, so it can be 5307 * compared to the currently focused textfield when the data is 5308 * retrieved. 5309 * @param autoFillable true if WebKit has determined this field is part of 5310 * a form that can be auto filled. 5311 * @param autoComplete true if the attribute "autocomplete" is set to true 5312 * on the textfield. 5313 */ 5314 /* package */ void requestFormData(String name, int nodePointer, 5315 boolean autoFillable, boolean autoComplete) { 5316 if (mWebViewCore.getSettings().getSaveFormData()) { 5317 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 5318 update.arg1 = nodePointer; 5319 RequestFormData updater = new RequestFormData(name, getUrl(), 5320 update, autoFillable, autoComplete); 5321 Thread t = new Thread(updater); 5322 t.start(); 5323 } 5324 } 5325 5326 /** 5327 * Pass a message to find out the <label> associated with the <input> 5328 * identified by nodePointer 5329 * @param framePointer Pointer to the frame containing the <input> node 5330 * @param nodePointer Pointer to the node for which a <label> is desired. 5331 */ 5332 /* package */ void requestLabel(int framePointer, int nodePointer) { 5333 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 5334 nodePointer); 5335 } 5336 5337 /* 5338 * This class requests an Adapter for the WebTextView which shows past 5339 * entries stored in the database. It is a Runnable so that it can be done 5340 * in its own thread, without slowing down the UI. 5341 */ 5342 private class RequestFormData implements Runnable { 5343 private String mName; 5344 private String mUrl; 5345 private Message mUpdateMessage; 5346 private boolean mAutoFillable; 5347 private boolean mAutoComplete; 5348 private WebSettings mWebSettings; 5349 5350 public RequestFormData(String name, String url, Message msg, 5351 boolean autoFillable, boolean autoComplete) { 5352 mName = name; 5353 mUrl = WebTextView.urlForAutoCompleteData(url); 5354 mUpdateMessage = msg; 5355 mAutoFillable = autoFillable; 5356 mAutoComplete = autoComplete; 5357 mWebSettings = getSettings(); 5358 } 5359 5360 @Override 5361 public void run() { 5362 ArrayList<String> pastEntries = new ArrayList<String>(); 5363 5364 if (mAutoFillable) { 5365 // Note that code inside the adapter click handler in WebTextView depends 5366 // on the AutoFill item being at the top of the drop down list. If you change 5367 // the order, make sure to do it there too! 5368 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 5369 pastEntries.add(getResources().getText( 5370 com.android.internal.R.string.autofill_this_form).toString() + 5371 " " + 5372 mAutoFillData.getPreviewString()); 5373 mWebTextView.setAutoFillProfileIsSet(true); 5374 } else { 5375 // There is no autofill profile set up yet, so add an option that 5376 // will invite the user to set their profile up. 5377 pastEntries.add(getResources().getText( 5378 com.android.internal.R.string.setup_autofill).toString()); 5379 mWebTextView.setAutoFillProfileIsSet(false); 5380 } 5381 } 5382 5383 if (mAutoComplete) { 5384 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 5385 } 5386 5387 if (pastEntries.size() > 0) { 5388 AutoCompleteAdapter adapter = new 5389 AutoCompleteAdapter(mContext, pastEntries); 5390 mUpdateMessage.obj = adapter; 5391 mUpdateMessage.sendToTarget(); 5392 } 5393 } 5394 } 5395 5396 /** 5397 * Dump the display tree to "/sdcard/displayTree.txt" 5398 * 5399 * @hide debug only 5400 */ 5401 public void dumpDisplayTree() { 5402 nativeDumpDisplayTree(getUrl()); 5403 } 5404 5405 /** 5406 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 5407 * "/sdcard/domTree.txt" 5408 * 5409 * @hide debug only 5410 */ 5411 public void dumpDomTree(boolean toFile) { 5412 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 5413 } 5414 5415 /** 5416 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 5417 * to "/sdcard/renderTree.txt" 5418 * 5419 * @hide debug only 5420 */ 5421 public void dumpRenderTree(boolean toFile) { 5422 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 5423 } 5424 5425 /** 5426 * Called by DRT on UI thread, need to proxy to WebCore thread. 5427 * 5428 * @hide debug only 5429 */ 5430 public void useMockDeviceOrientation() { 5431 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 5432 } 5433 5434 /** 5435 * Called by DRT on WebCore thread. 5436 * 5437 * @hide debug only 5438 */ 5439 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 5440 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 5441 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 5442 canProvideGamma, gamma); 5443 } 5444 5445 // This is used to determine long press with the center key. Does not 5446 // affect long press with the trackball/touch. 5447 private boolean mGotCenterDown = false; 5448 5449 @Override 5450 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 5451 if (mBlockWebkitViewMessages) { 5452 return false; 5453 } 5454 // send complex characters to webkit for use by JS and plugins 5455 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 5456 // pass the key to DOM 5457 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5458 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5459 // return true as DOM handles the key 5460 return true; 5461 } 5462 return false; 5463 } 5464 5465 private boolean isEnterActionKey(int keyCode) { 5466 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 5467 || keyCode == KeyEvent.KEYCODE_ENTER 5468 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 5469 } 5470 5471 @Override 5472 public boolean onKeyDown(int keyCode, KeyEvent event) { 5473 if (DebugFlags.WEB_VIEW) { 5474 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 5475 + "keyCode=" + keyCode 5476 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5477 } 5478 if (mBlockWebkitViewMessages) { 5479 return false; 5480 } 5481 5482 // don't implement accelerator keys here; defer to host application 5483 if (event.isCtrlPressed()) { 5484 return false; 5485 } 5486 5487 if (mNativeClass == 0) { 5488 return false; 5489 } 5490 5491 // do this hack up front, so it always works, regardless of touch-mode 5492 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 5493 mAutoRedraw = !mAutoRedraw; 5494 if (mAutoRedraw) { 5495 invalidate(); 5496 } 5497 return true; 5498 } 5499 5500 // Bubble up the key event if 5501 // 1. it is a system key; or 5502 // 2. the host application wants to handle it; 5503 if (event.isSystem() 5504 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5505 return false; 5506 } 5507 5508 // accessibility support 5509 if (accessibilityScriptInjected()) { 5510 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5511 // if an accessibility script is injected we delegate to it the key handling. 5512 // this script is a screen reader which is a fully fledged solution for blind 5513 // users to navigate in and interact with web pages. 5514 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5515 return true; 5516 } else { 5517 // Clean up if accessibility was disabled after loading the current URL. 5518 mAccessibilityScriptInjected = false; 5519 } 5520 } else if (mAccessibilityInjector != null) { 5521 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5522 if (mAccessibilityInjector.onKeyEvent(event)) { 5523 // if an accessibility injector is present (no JavaScript enabled or the site 5524 // opts out injecting our JavaScript screen reader) we let it decide whether 5525 // to act on and consume the event. 5526 return true; 5527 } 5528 } else { 5529 // Clean up if accessibility was disabled after loading the current URL. 5530 mAccessibilityInjector = null; 5531 } 5532 } 5533 5534 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 5535 if (event.hasNoModifiers()) { 5536 pageUp(false); 5537 return true; 5538 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5539 pageUp(true); 5540 return true; 5541 } 5542 } 5543 5544 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 5545 if (event.hasNoModifiers()) { 5546 pageDown(false); 5547 return true; 5548 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5549 pageDown(true); 5550 return true; 5551 } 5552 } 5553 5554 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 5555 pageUp(true); 5556 return true; 5557 } 5558 5559 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 5560 pageDown(true); 5561 return true; 5562 } 5563 5564 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5565 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5566 switchOutDrawHistory(); 5567 if (nativePageShouldHandleShiftAndArrows()) { 5568 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 5569 return true; 5570 } 5571 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5572 switch (keyCode) { 5573 case KeyEvent.KEYCODE_DPAD_UP: 5574 pageUp(true); 5575 return true; 5576 case KeyEvent.KEYCODE_DPAD_DOWN: 5577 pageDown(true); 5578 return true; 5579 case KeyEvent.KEYCODE_DPAD_LEFT: 5580 nativeClearCursor(); // start next trackball movement from page edge 5581 return pinScrollTo(0, mScrollY, true, 0); 5582 case KeyEvent.KEYCODE_DPAD_RIGHT: 5583 nativeClearCursor(); // start next trackball movement from page edge 5584 return pinScrollTo(mContentWidth, mScrollY, true, 0); 5585 } 5586 } 5587 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 5588 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 5589 return true; 5590 } 5591 // Bubble up the key event as WebView doesn't handle it 5592 return false; 5593 } 5594 5595 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 5596 switchOutDrawHistory(); 5597 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 5598 || nativeCursorWantsKeyEvents(); 5599 if (event.getRepeatCount() == 0) { 5600 if (mSelectingText) { 5601 return true; // discard press if copy in progress 5602 } 5603 mGotCenterDown = true; 5604 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5605 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 5606 if (!wantsKeyEvents) return true; 5607 } 5608 // Bubble up the key event as WebView doesn't handle it 5609 if (!wantsKeyEvents) return false; 5610 } 5611 5612 if (getSettings().getNavDump()) { 5613 switch (keyCode) { 5614 case KeyEvent.KEYCODE_4: 5615 dumpDisplayTree(); 5616 break; 5617 case KeyEvent.KEYCODE_5: 5618 case KeyEvent.KEYCODE_6: 5619 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5620 break; 5621 case KeyEvent.KEYCODE_7: 5622 case KeyEvent.KEYCODE_8: 5623 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5624 break; 5625 } 5626 } 5627 5628 if (nativeCursorIsTextInput()) { 5629 // This message will put the node in focus, for the DOM's notion 5630 // of focus. 5631 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5632 nativeCursorNodePointer()); 5633 // This will bring up the WebTextView and put it in focus, for 5634 // our view system's notion of focus 5635 rebuildWebTextView(); 5636 // Now we need to pass the event to it 5637 if (inEditingMode()) { 5638 mWebTextView.setDefaultSelection(); 5639 return mWebTextView.dispatchKeyEvent(event); 5640 } 5641 } else if (nativeHasFocusNode()) { 5642 // In this case, the cursor is not on a text input, but the focus 5643 // might be. Check it, and if so, hand over to the WebTextView. 5644 rebuildWebTextView(); 5645 if (inEditingMode()) { 5646 mWebTextView.setDefaultSelection(); 5647 return mWebTextView.dispatchKeyEvent(event); 5648 } 5649 } 5650 5651 // TODO: should we pass all the keys to DOM or check the meta tag 5652 if (nativeCursorWantsKeyEvents() || true) { 5653 // pass the key to DOM 5654 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5655 // return true as DOM handles the key 5656 return true; 5657 } 5658 5659 // Bubble up the key event as WebView doesn't handle it 5660 return false; 5661 } 5662 5663 @Override 5664 public boolean onKeyUp(int keyCode, KeyEvent event) { 5665 if (DebugFlags.WEB_VIEW) { 5666 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5667 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5668 } 5669 if (mBlockWebkitViewMessages) { 5670 return false; 5671 } 5672 5673 if (mNativeClass == 0) { 5674 return false; 5675 } 5676 5677 // special CALL handling when cursor node's href is "tel:XXX" 5678 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5679 String text = nativeCursorText(); 5680 if (!nativeCursorIsTextInput() && text != null 5681 && text.startsWith(SCHEME_TEL)) { 5682 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5683 getContext().startActivity(intent); 5684 return true; 5685 } 5686 } 5687 5688 // Bubble up the key event if 5689 // 1. it is a system key; or 5690 // 2. the host application wants to handle it; 5691 if (event.isSystem() 5692 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5693 return false; 5694 } 5695 5696 // accessibility support 5697 if (accessibilityScriptInjected()) { 5698 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5699 // if an accessibility script is injected we delegate to it the key handling. 5700 // this script is a screen reader which is a fully fledged solution for blind 5701 // users to navigate in and interact with web pages. 5702 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5703 return true; 5704 } else { 5705 // Clean up if accessibility was disabled after loading the current URL. 5706 mAccessibilityScriptInjected = false; 5707 } 5708 } else if (mAccessibilityInjector != null) { 5709 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5710 if (mAccessibilityInjector.onKeyEvent(event)) { 5711 // if an accessibility injector is present (no JavaScript enabled or the site 5712 // opts out injecting our JavaScript screen reader) we let it decide whether to 5713 // act on and consume the event. 5714 return true; 5715 } 5716 } else { 5717 // Clean up if accessibility was disabled after loading the current URL. 5718 mAccessibilityInjector = null; 5719 } 5720 } 5721 5722 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5723 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5724 if (nativePageShouldHandleShiftAndArrows()) { 5725 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5726 return true; 5727 } 5728 // always handle the navigation keys in the UI thread 5729 // Bubble up the key event as WebView doesn't handle it 5730 return false; 5731 } 5732 5733 if (isEnterActionKey(keyCode)) { 5734 // remove the long press message first 5735 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5736 mGotCenterDown = false; 5737 5738 if (mSelectingText) { 5739 copySelection(); 5740 selectionDone(); 5741 return true; // discard press if copy in progress 5742 } 5743 5744 // perform the single click 5745 Rect visibleRect = sendOurVisibleRect(); 5746 // Note that sendOurVisibleRect calls viewToContent, so the 5747 // coordinates should be in content coordinates. 5748 if (!nativeCursorIntersects(visibleRect)) { 5749 return false; 5750 } 5751 WebViewCore.CursorData data = cursorData(); 5752 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5753 playSoundEffect(SoundEffectConstants.CLICK); 5754 if (nativeCursorIsTextInput()) { 5755 rebuildWebTextView(); 5756 centerKeyPressOnTextField(); 5757 if (inEditingMode()) { 5758 mWebTextView.setDefaultSelection(); 5759 } 5760 return true; 5761 } 5762 clearTextEntry(); 5763 nativeShowCursorTimed(); 5764 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5765 return true; 5766 } 5767 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5768 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5769 nativeCursorNodePointer()); 5770 return true; 5771 } 5772 } 5773 5774 // TODO: should we pass all the keys to DOM or check the meta tag 5775 if (nativeCursorWantsKeyEvents() || true) { 5776 // pass the key to DOM 5777 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5778 // return true as DOM handles the key 5779 return true; 5780 } 5781 5782 // Bubble up the key event as WebView doesn't handle it 5783 return false; 5784 } 5785 5786 private boolean startSelectActionMode() { 5787 mSelectCallback = new SelectActionModeCallback(); 5788 mSelectCallback.setWebView(this); 5789 if (startActionMode(mSelectCallback) == null) { 5790 // There is no ActionMode, so do not allow the user to modify a 5791 // selection. 5792 selectionDone(); 5793 return false; 5794 } 5795 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 5796 return true; 5797 } 5798 5799 private void syncSelectionCursors() { 5800 mSelectCursorBaseLayerId = 5801 nativeGetHandleLayerId(mNativeClass, HANDLE_ID_BASE, mSelectCursorBase); 5802 mSelectCursorExtentLayerId = 5803 nativeGetHandleLayerId(mNativeClass, HANDLE_ID_EXTENT, mSelectCursorExtent); 5804 } 5805 5806 private boolean setupWebkitSelect() { 5807 syncSelectionCursors(); 5808 if (!startSelectActionMode()) { 5809 selectionDone(); 5810 return false; 5811 } 5812 mSelectingText = true; 5813 mTouchMode = TOUCH_DRAG_MODE; 5814 return true; 5815 } 5816 5817 private void updateWebkitSelection() { 5818 int[] handles = null; 5819 if (mSelectingText) { 5820 handles = new int[4]; 5821 handles[0] = mSelectCursorBase.centerX(); 5822 handles[1] = mSelectCursorBase.centerY(); 5823 handles[2] = mSelectCursorExtent.centerX(); 5824 handles[3] = mSelectCursorExtent.centerY(); 5825 } else { 5826 nativeSetTextSelection(mNativeClass, 0); 5827 } 5828 mWebViewCore.removeMessages(EventHub.SELECT_TEXT); 5829 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.SELECT_TEXT, handles); 5830 } 5831 5832 /** 5833 * Use this method to put the WebView into text selection mode. 5834 * Do not rely on this functionality; it will be deprecated in the future. 5835 * @deprecated This method is now obsolete. 5836 */ 5837 @Deprecated 5838 public void emulateShiftHeld() { 5839 checkThread(); 5840 } 5841 5842 /** 5843 * Select all of the text in this WebView. 5844 * 5845 * @hide This is an implementation detail. 5846 */ 5847 public void selectAll() { 5848 mWebViewCore.sendMessage(EventHub.SELECT_ALL); 5849 } 5850 5851 /** 5852 * Called when the selection has been removed. 5853 */ 5854 void selectionDone() { 5855 if (mSelectingText) { 5856 mSelectingText = false; 5857 // finish is idempotent, so this is fine even if selectionDone was 5858 // called by mSelectCallback.onDestroyActionMode 5859 mSelectCallback.finish(); 5860 mSelectCallback = null; 5861 updateWebkitSelection(); 5862 invalidate(); // redraw without selection 5863 mAutoScrollX = 0; 5864 mAutoScrollY = 0; 5865 mSentAutoScrollMessage = false; 5866 } 5867 } 5868 5869 /** 5870 * Copy the selection to the clipboard 5871 * 5872 * @hide This is an implementation detail. 5873 */ 5874 public boolean copySelection() { 5875 boolean copiedSomething = false; 5876 String selection = getSelection(); 5877 if (selection != null && selection != "") { 5878 if (DebugFlags.WEB_VIEW) { 5879 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5880 } 5881 Toast.makeText(mContext 5882 , com.android.internal.R.string.text_copied 5883 , Toast.LENGTH_SHORT).show(); 5884 copiedSomething = true; 5885 ClipboardManager cm = (ClipboardManager)getContext() 5886 .getSystemService(Context.CLIPBOARD_SERVICE); 5887 cm.setText(selection); 5888 int[] handles = new int[4]; 5889 getSelectionHandles(handles); 5890 mWebViewCore.sendMessage(EventHub.COPY_TEXT, handles); 5891 } 5892 invalidate(); // remove selection region and pointer 5893 return copiedSomething; 5894 } 5895 5896 /** 5897 * Cut the selected text into the clipboard 5898 * 5899 * @hide This is an implementation detail 5900 */ 5901 public void cutSelection() { 5902 copySelection(); 5903 int[] handles = new int[4]; 5904 getSelectionHandles(handles); 5905 mWebViewCore.sendMessage(EventHub.DELETE_TEXT, handles); 5906 } 5907 5908 /** 5909 * Paste text from the clipboard to the cursor position. 5910 * 5911 * @hide This is an implementation detail 5912 */ 5913 public void pasteFromClipboard() { 5914 ClipboardManager cm = (ClipboardManager)getContext() 5915 .getSystemService(Context.CLIPBOARD_SERVICE); 5916 ClipData clipData = cm.getPrimaryClip(); 5917 if (clipData != null) { 5918 ClipData.Item clipItem = clipData.getItemAt(0); 5919 CharSequence pasteText = clipItem.getText(); 5920 if (pasteText != null) { 5921 int[] handles = new int[4]; 5922 getSelectionHandles(handles); 5923 mWebViewCore.sendMessage(EventHub.DELETE_TEXT, handles); 5924 mWebViewCore.sendMessage(EventHub.INSERT_TEXT, 5925 pasteText.toString()); 5926 } 5927 } 5928 } 5929 5930 /** 5931 * @hide This is an implementation detail. 5932 */ 5933 public SearchBox getSearchBox() { 5934 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5935 return null; 5936 } 5937 return mWebViewCore.getBrowserFrame().getSearchBox(); 5938 } 5939 5940 /** 5941 * Returns the currently highlighted text as a string. 5942 */ 5943 String getSelection() { 5944 if (mNativeClass == 0) return ""; 5945 return nativeGetSelection(); 5946 } 5947 5948 @Override 5949 protected void onAttachedToWindow() { 5950 super.onAttachedToWindow(); 5951 if (hasWindowFocus()) setActive(true); 5952 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5953 if (mGlobalLayoutListener == null) { 5954 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5955 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5956 } 5957 if (mScrollChangedListener == null) { 5958 mScrollChangedListener = new InnerScrollChangedListener(); 5959 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5960 } 5961 5962 addAccessibilityApisToJavaScript(); 5963 5964 mTouchEventQueue.reset(); 5965 } 5966 5967 @Override 5968 protected void onDetachedFromWindow() { 5969 clearHelpers(); 5970 mZoomManager.dismissZoomPicker(); 5971 if (hasWindowFocus()) setActive(false); 5972 5973 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5974 if (mGlobalLayoutListener != null) { 5975 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5976 mGlobalLayoutListener = null; 5977 } 5978 if (mScrollChangedListener != null) { 5979 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5980 mScrollChangedListener = null; 5981 } 5982 5983 removeAccessibilityApisFromJavaScript(); 5984 5985 super.onDetachedFromWindow(); 5986 } 5987 5988 @Override 5989 protected void onVisibilityChanged(View changedView, int visibility) { 5990 super.onVisibilityChanged(changedView, visibility); 5991 // The zoomManager may be null if the webview is created from XML that 5992 // specifies the view's visibility param as not visible (see http://b/2794841) 5993 if (visibility != View.VISIBLE && mZoomManager != null) { 5994 mZoomManager.dismissZoomPicker(); 5995 } 5996 updateDrawingState(); 5997 } 5998 5999 /** 6000 * @deprecated WebView no longer needs to implement 6001 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 6002 */ 6003 @Override 6004 // Cannot add @hide as this can always be accessed via the interface. 6005 @Deprecated 6006 public void onChildViewAdded(View parent, View child) {} 6007 6008 /** 6009 * @deprecated WebView no longer needs to implement 6010 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 6011 */ 6012 @Override 6013 // Cannot add @hide as this can always be accessed via the interface. 6014 @Deprecated 6015 public void onChildViewRemoved(View p, View child) {} 6016 6017 /** 6018 * @deprecated WebView should not have implemented 6019 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 6020 */ 6021 @Override 6022 // Cannot add @hide as this can always be accessed via the interface. 6023 @Deprecated 6024 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 6025 } 6026 6027 void setActive(boolean active) { 6028 if (active) { 6029 if (hasFocus()) { 6030 // If our window regained focus, and we have focus, then begin 6031 // drawing the cursor ring 6032 mDrawCursorRing = !inEditingMode(); 6033 setFocusControllerActive(true); 6034 } else { 6035 mDrawCursorRing = false; 6036 if (!inEditingMode()) { 6037 // If our window gained focus, but we do not have it, do not 6038 // draw the cursor ring. 6039 setFocusControllerActive(false); 6040 } 6041 // We do not call recordButtons here because we assume 6042 // that when we lost focus, or window focus, it got called with 6043 // false for the first parameter 6044 } 6045 } else { 6046 if (!mZoomManager.isZoomPickerVisible()) { 6047 /* 6048 * The external zoom controls come in their own window, so our 6049 * window loses focus. Our policy is to not draw the cursor ring 6050 * if our window is not focused, but this is an exception since 6051 * the user can still navigate the web page with the zoom 6052 * controls showing. 6053 */ 6054 mDrawCursorRing = false; 6055 } 6056 mKeysPressed.clear(); 6057 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6058 mTouchMode = TOUCH_DONE_MODE; 6059 setFocusControllerActive(false); 6060 } 6061 invalidate(); 6062 } 6063 6064 // To avoid drawing the cursor ring, and remove the TextView when our window 6065 // loses focus. 6066 @Override 6067 public void onWindowFocusChanged(boolean hasWindowFocus) { 6068 setActive(hasWindowFocus); 6069 if (hasWindowFocus) { 6070 JWebCoreJavaBridge.setActiveWebView(this); 6071 if (mPictureUpdatePausedForFocusChange) { 6072 WebViewCore.resumeUpdatePicture(mWebViewCore); 6073 mPictureUpdatePausedForFocusChange = false; 6074 } 6075 } else { 6076 JWebCoreJavaBridge.removeActiveWebView(this); 6077 final WebSettings settings = getSettings(); 6078 if (settings != null && settings.enableSmoothTransition() && 6079 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 6080 WebViewCore.pauseUpdatePicture(mWebViewCore); 6081 mPictureUpdatePausedForFocusChange = true; 6082 } 6083 } 6084 super.onWindowFocusChanged(hasWindowFocus); 6085 } 6086 6087 /* 6088 * Pass a message to WebCore Thread, telling the WebCore::Page's 6089 * FocusController to be "inactive" so that it will 6090 * not draw the blinking cursor. It gets set to "active" to draw the cursor 6091 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 6092 */ 6093 /* package */ void setFocusControllerActive(boolean active) { 6094 if (mWebViewCore == null) return; 6095 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 6096 // Need to send this message after the document regains focus. 6097 if (active && mListBoxMessage != null) { 6098 mWebViewCore.sendMessage(mListBoxMessage); 6099 mListBoxMessage = null; 6100 } 6101 } 6102 6103 @Override 6104 protected void onFocusChanged(boolean focused, int direction, 6105 Rect previouslyFocusedRect) { 6106 if (DebugFlags.WEB_VIEW) { 6107 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 6108 } 6109 if (focused) { 6110 // When we regain focus, if we have window focus, resume drawing 6111 // the cursor ring 6112 if (hasWindowFocus()) { 6113 mDrawCursorRing = !inEditingMode(); 6114 setFocusControllerActive(true); 6115 //} else { 6116 // The WebView has gained focus while we do not have 6117 // windowfocus. When our window lost focus, we should have 6118 // called recordButtons(false...) 6119 } 6120 } else { 6121 // When we lost focus, unless focus went to the TextView (which is 6122 // true if we are in editing mode), stop drawing the cursor ring. 6123 mDrawCursorRing = false; 6124 if (!inEditingMode()) { 6125 setFocusControllerActive(false); 6126 } 6127 mKeysPressed.clear(); 6128 } 6129 6130 super.onFocusChanged(focused, direction, previouslyFocusedRect); 6131 } 6132 6133 void setGLRectViewport() { 6134 // Use the getGlobalVisibleRect() to get the intersection among the parents 6135 // visible == false means we're clipped - send a null rect down to indicate that 6136 // we should not draw 6137 boolean visible = getGlobalVisibleRect(mGLRectViewport); 6138 if (visible) { 6139 // Then need to invert the Y axis, just for GL 6140 View rootView = getRootView(); 6141 int rootViewHeight = rootView.getHeight(); 6142 mViewRectViewport.set(mGLRectViewport); 6143 int savedWebViewBottom = mGLRectViewport.bottom; 6144 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 6145 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 6146 mGLViewportEmpty = false; 6147 } else { 6148 mGLViewportEmpty = true; 6149 } 6150 calcOurContentVisibleRectF(mVisibleContentRect); 6151 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 6152 mGLViewportEmpty ? null : mViewRectViewport, 6153 mVisibleContentRect, getScale()); 6154 } 6155 6156 /** 6157 * @hide 6158 */ 6159 @Override 6160 protected boolean setFrame(int left, int top, int right, int bottom) { 6161 boolean changed = super.setFrame(left, top, right, bottom); 6162 if (!changed && mHeightCanMeasure) { 6163 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 6164 // in WebViewCore after we get the first layout. We do call 6165 // requestLayout() when we get contentSizeChanged(). But the View 6166 // system won't call onSizeChanged if the dimension is not changed. 6167 // In this case, we need to call sendViewSizeZoom() explicitly to 6168 // notify the WebKit about the new dimensions. 6169 sendViewSizeZoom(false); 6170 } 6171 setGLRectViewport(); 6172 return changed; 6173 } 6174 6175 @Override 6176 protected void onSizeChanged(int w, int h, int ow, int oh) { 6177 super.onSizeChanged(w, h, ow, oh); 6178 6179 // adjust the max viewport width depending on the view dimensions. This 6180 // is to ensure the scaling is not going insane. So do not shrink it if 6181 // the view size is temporarily smaller, e.g. when soft keyboard is up. 6182 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 6183 if (newMaxViewportWidth > sMaxViewportWidth) { 6184 sMaxViewportWidth = newMaxViewportWidth; 6185 } 6186 6187 mZoomManager.onSizeChanged(w, h, ow, oh); 6188 6189 if (mLoadedPicture != null && mDelaySetPicture == null) { 6190 // Size changes normally result in a new picture 6191 // Re-set the loaded picture to simulate that 6192 // However, do not update the base layer as that hasn't changed 6193 setNewPicture(mLoadedPicture, false); 6194 } 6195 } 6196 6197 @Override 6198 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 6199 super.onScrollChanged(l, t, oldl, oldt); 6200 if (!mInOverScrollMode) { 6201 sendOurVisibleRect(); 6202 // update WebKit if visible title bar height changed. The logic is same 6203 // as getVisibleTitleHeightImpl. 6204 int titleHeight = getTitleHeight(); 6205 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 6206 sendViewSizeZoom(false); 6207 } 6208 } 6209 } 6210 6211 @Override 6212 public boolean dispatchKeyEvent(KeyEvent event) { 6213 switch (event.getAction()) { 6214 case KeyEvent.ACTION_DOWN: 6215 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 6216 break; 6217 case KeyEvent.ACTION_MULTIPLE: 6218 // Always accept the action. 6219 break; 6220 case KeyEvent.ACTION_UP: 6221 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 6222 if (location == -1) { 6223 // We did not receive the key down for this key, so do not 6224 // handle the key up. 6225 return false; 6226 } else { 6227 // We did receive the key down. Handle the key up, and 6228 // remove it from our pressed keys. 6229 mKeysPressed.remove(location); 6230 } 6231 break; 6232 default: 6233 // Accept the action. This should not happen, unless a new 6234 // action is added to KeyEvent. 6235 break; 6236 } 6237 if (inEditingMode() && mWebTextView.isFocused()) { 6238 // Ensure that the WebTextView gets the event, even if it does 6239 // not currently have a bounds. 6240 return mWebTextView.dispatchKeyEvent(event); 6241 } else { 6242 return super.dispatchKeyEvent(event); 6243 } 6244 } 6245 6246 /* 6247 * Here is the snap align logic: 6248 * 1. If it starts nearly horizontally or vertically, snap align; 6249 * 2. If there is a dramitic direction change, let it go; 6250 * 6251 * Adjustable parameters. Angle is the radians on a unit circle, limited 6252 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 6253 */ 6254 private static final float HSLOPE_TO_START_SNAP = .25f; 6255 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 6256 private static final float VSLOPE_TO_START_SNAP = 1.25f; 6257 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 6258 /* 6259 * These values are used to influence the average angle when entering 6260 * snap mode. If is is the first movement entering snap, we set the average 6261 * to the appropriate ideal. If the user is entering into snap after the 6262 * first movement, then we average the average angle with these values. 6263 */ 6264 private static final float ANGLE_VERT = 2f; 6265 private static final float ANGLE_HORIZ = 0f; 6266 /* 6267 * The modified moving average weight. 6268 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 6269 */ 6270 private static final float MMA_WEIGHT_N = 5; 6271 6272 private boolean hitFocusedPlugin(int contentX, int contentY) { 6273 if (DebugFlags.WEB_VIEW) { 6274 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 6275 Rect r = nativeFocusNodeBounds(); 6276 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 6277 + ", " + r.right + ", " + r.bottom + ")"); 6278 } 6279 return nativeFocusIsPlugin() 6280 && nativeFocusNodeBounds().contains(contentX, contentY); 6281 } 6282 6283 private boolean shouldForwardTouchEvent() { 6284 if (mFullScreenHolder != null) return true; 6285 if (mBlockWebkitViewMessages) return false; 6286 return mForwardTouchEvents 6287 && !mSelectingText 6288 && mPreventDefault != PREVENT_DEFAULT_IGNORE 6289 && mPreventDefault != PREVENT_DEFAULT_NO; 6290 } 6291 6292 private boolean inFullScreenMode() { 6293 return mFullScreenHolder != null; 6294 } 6295 6296 private void dismissFullScreenMode() { 6297 if (inFullScreenMode()) { 6298 mFullScreenHolder.hide(); 6299 mFullScreenHolder = null; 6300 invalidate(); 6301 } 6302 } 6303 6304 void onPinchToZoomAnimationStart() { 6305 // cancel the single touch handling 6306 cancelTouch(); 6307 onZoomAnimationStart(); 6308 } 6309 6310 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 6311 onZoomAnimationEnd(); 6312 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 6313 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 6314 // as it may trigger the unwanted fling. 6315 mTouchMode = TOUCH_PINCH_DRAG; 6316 mConfirmMove = true; 6317 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 6318 } 6319 6320 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 6321 // layer is found. 6322 private void startScrollingLayer(float x, float y) { 6323 int contentX = viewToContentX((int) x + mScrollX); 6324 int contentY = viewToContentY((int) y + mScrollY); 6325 mCurrentScrollingLayerId = nativeScrollableLayer(contentX, contentY, 6326 mScrollingLayerRect, mScrollingLayerBounds); 6327 if (mCurrentScrollingLayerId != 0) { 6328 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6329 } 6330 } 6331 6332 // 1/(density * density) used to compute the distance between points. 6333 // Computed in init(). 6334 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 6335 6336 // The distance between two points reported in onTouchEvent scaled by the 6337 // density of the screen. 6338 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 6339 6340 @Override 6341 public boolean onHoverEvent(MotionEvent event) { 6342 if (mNativeClass == 0) { 6343 return false; 6344 } 6345 WebViewCore.CursorData data = cursorDataNoPosition(); 6346 data.mX = viewToContentX((int) event.getX() + mScrollX); 6347 data.mY = viewToContentY((int) event.getY() + mScrollY); 6348 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 6349 return true; 6350 } 6351 6352 @Override 6353 public boolean onTouchEvent(MotionEvent ev) { 6354 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 6355 return false; 6356 } 6357 6358 if (DebugFlags.WEB_VIEW) { 6359 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 6360 + " mTouchMode=" + mTouchMode 6361 + " numPointers=" + ev.getPointerCount()); 6362 } 6363 6364 // If WebKit wasn't interested in this multitouch gesture, enqueue 6365 // the event for handling directly rather than making the round trip 6366 // to WebKit and back. 6367 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 6368 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 6369 } else { 6370 mTouchEventQueue.enqueueTouchEvent(ev); 6371 } 6372 6373 // Since all events are handled asynchronously, we always want the gesture stream. 6374 return true; 6375 } 6376 6377 private float calculateDragAngle(int dx, int dy) { 6378 dx = Math.abs(dx); 6379 dy = Math.abs(dy); 6380 return (float) Math.atan2(dy, dx); 6381 } 6382 6383 /* 6384 * Common code for single touch and multi-touch. 6385 * (x, y) denotes current focus point, which is the touch point for single touch 6386 * and the middle point for multi-touch. 6387 */ 6388 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 6389 long eventTime = ev.getEventTime(); 6390 6391 // Due to the touch screen edge effect, a touch closer to the edge 6392 // always snapped to the edge. As getViewWidth() can be different from 6393 // getWidth() due to the scrollbar, adjusting the point to match 6394 // getViewWidth(). Same applied to the height. 6395 x = Math.min(x, getViewWidth() - 1); 6396 y = Math.min(y, getViewHeightWithTitle() - 1); 6397 6398 int deltaX = mLastTouchX - x; 6399 int deltaY = mLastTouchY - y; 6400 int contentX = viewToContentX(x + mScrollX); 6401 int contentY = viewToContentY(y + mScrollY); 6402 6403 switch (action) { 6404 case MotionEvent.ACTION_DOWN: { 6405 mPreventDefault = PREVENT_DEFAULT_NO; 6406 mConfirmMove = false; 6407 mInitialHitTestResult = null; 6408 if (!mScroller.isFinished()) { 6409 // stop the current scroll animation, but if this is 6410 // the start of a fling, allow it to add to the current 6411 // fling's velocity 6412 mScroller.abortAnimation(); 6413 mTouchMode = TOUCH_DRAG_START_MODE; 6414 mConfirmMove = true; 6415 nativeSetIsScrolling(false); 6416 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 6417 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 6418 if (sDisableNavcache) { 6419 removeTouchHighlight(); 6420 } 6421 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 6422 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 6423 } else { 6424 // commit the short press action for the previous tap 6425 doShortPress(); 6426 mTouchMode = TOUCH_INIT_MODE; 6427 mDeferTouchProcess = !mBlockWebkitViewMessages 6428 && (!inFullScreenMode() && mForwardTouchEvents) 6429 ? hitFocusedPlugin(contentX, contentY) 6430 : false; 6431 } 6432 } else { // the normal case 6433 mTouchMode = TOUCH_INIT_MODE; 6434 mDeferTouchProcess = !mBlockWebkitViewMessages 6435 && (!inFullScreenMode() && mForwardTouchEvents) 6436 ? hitFocusedPlugin(contentX, contentY) 6437 : false; 6438 if (!mBlockWebkitViewMessages) { 6439 mWebViewCore.sendMessage( 6440 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 6441 } 6442 if (sDisableNavcache) { 6443 TouchHighlightData data = new TouchHighlightData(); 6444 data.mX = contentX; 6445 data.mY = contentY; 6446 data.mNativeLayerRect = new Rect(); 6447 data.mNativeLayer = nativeScrollableLayer( 6448 contentX, contentY, data.mNativeLayerRect, null); 6449 data.mSlop = viewToContentDimension(mNavSlop); 6450 mTouchHighlightRegion.setEmpty(); 6451 if (!mBlockWebkitViewMessages) { 6452 mTouchHighlightRequested = System.currentTimeMillis(); 6453 mWebViewCore.sendMessageAtFrontOfQueue( 6454 EventHub.HIT_TEST, data); 6455 } 6456 if (DEBUG_TOUCH_HIGHLIGHT) { 6457 if (getSettings().getNavDump()) { 6458 mTouchHighlightX = x + mScrollX; 6459 mTouchHighlightY = y + mScrollY; 6460 mPrivateHandler.postDelayed(new Runnable() { 6461 @Override 6462 public void run() { 6463 mTouchHighlightX = mTouchHighlightY = 0; 6464 invalidate(); 6465 } 6466 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 6467 } 6468 } 6469 } 6470 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 6471 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 6472 (eventTime - mLastTouchUpTime), eventTime); 6473 } 6474 mSelectionStarted = false; 6475 if (mSelectingText && mSelectHandleLeft != null 6476 && mSelectHandleRight != null) { 6477 int shiftedY = y - getTitleHeight() + mScrollY; 6478 int shiftedX = x + mScrollX; 6479 if (mSelectHandleLeft.getBounds() 6480 .contains(shiftedX, shiftedY)) { 6481 mSelectionStarted = true; 6482 mSelectDraggingCursor = mSelectCursorBase; 6483 } else if (mSelectHandleRight.getBounds() 6484 .contains(shiftedX, shiftedY)) { 6485 mSelectionStarted = true; 6486 mSelectDraggingCursor = mSelectCursorExtent; 6487 } 6488 if (mSelectDraggingCursor != null) { 6489 mSelectDraggingOffset.set( 6490 mSelectDraggingCursor.left - contentX, 6491 mSelectDraggingCursor.top - contentY); 6492 } 6493 if (DebugFlags.WEB_VIEW) { 6494 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 6495 } 6496 } 6497 } 6498 // Trigger the link 6499 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 6500 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 6501 mPrivateHandler.sendEmptyMessageDelayed( 6502 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 6503 mPrivateHandler.sendEmptyMessageDelayed( 6504 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 6505 if (inFullScreenMode() || mDeferTouchProcess) { 6506 mPreventDefault = PREVENT_DEFAULT_YES; 6507 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 6508 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 6509 } else { 6510 mPreventDefault = PREVENT_DEFAULT_NO; 6511 } 6512 // pass the touch events from UI thread to WebCore thread 6513 if (shouldForwardTouchEvent()) { 6514 TouchEventData ted = new TouchEventData(); 6515 ted.mAction = action; 6516 ted.mIds = new int[1]; 6517 ted.mIds[0] = ev.getPointerId(0); 6518 ted.mPoints = new Point[1]; 6519 ted.mPoints[0] = new Point(contentX, contentY); 6520 ted.mPointsInView = new Point[1]; 6521 ted.mPointsInView[0] = new Point(x, y); 6522 ted.mMetaState = ev.getMetaState(); 6523 ted.mReprocess = mDeferTouchProcess; 6524 ted.mNativeLayer = nativeScrollableLayer( 6525 contentX, contentY, ted.mNativeLayerRect, null); 6526 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6527 mTouchEventQueue.preQueueTouchEventData(ted); 6528 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6529 if (mDeferTouchProcess) { 6530 // still needs to set them for compute deltaX/Y 6531 mLastTouchX = x; 6532 mLastTouchY = y; 6533 break; 6534 } 6535 if (!inFullScreenMode()) { 6536 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 6537 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6538 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6539 action, 0), TAP_TIMEOUT); 6540 } 6541 } 6542 } 6543 startTouch(x, y, eventTime); 6544 break; 6545 } 6546 case MotionEvent.ACTION_MOVE: { 6547 boolean firstMove = false; 6548 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 6549 >= mTouchSlopSquare) { 6550 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6551 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6552 mConfirmMove = true; 6553 firstMove = true; 6554 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6555 mTouchMode = TOUCH_INIT_MODE; 6556 } 6557 if (sDisableNavcache) { 6558 removeTouchHighlight(); 6559 } 6560 } 6561 if (mSelectingText && mSelectionStarted) { 6562 if (DebugFlags.WEB_VIEW) { 6563 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 6564 } 6565 ViewParent parent = getParent(); 6566 if (parent != null) { 6567 parent.requestDisallowInterceptTouchEvent(true); 6568 } 6569 if (deltaX != 0 || deltaY != 0) { 6570 mSelectDraggingCursor.offsetTo( 6571 contentX + mSelectDraggingOffset.x, 6572 contentY + mSelectDraggingOffset.y); 6573 updateWebkitSelection(); 6574 mLastTouchX = x; 6575 mLastTouchY = y; 6576 invalidate(); 6577 } 6578 break; 6579 } 6580 6581 // pass the touch events from UI thread to WebCore thread 6582 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 6583 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 6584 TouchEventData ted = new TouchEventData(); 6585 ted.mAction = action; 6586 ted.mIds = new int[1]; 6587 ted.mIds[0] = ev.getPointerId(0); 6588 ted.mPoints = new Point[1]; 6589 ted.mPoints[0] = new Point(contentX, contentY); 6590 ted.mPointsInView = new Point[1]; 6591 ted.mPointsInView[0] = new Point(x, y); 6592 ted.mMetaState = ev.getMetaState(); 6593 ted.mReprocess = mDeferTouchProcess; 6594 ted.mNativeLayer = mCurrentScrollingLayerId; 6595 ted.mNativeLayerRect.set(mScrollingLayerRect); 6596 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6597 mTouchEventQueue.preQueueTouchEventData(ted); 6598 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6599 mLastSentTouchTime = eventTime; 6600 if (mDeferTouchProcess) { 6601 break; 6602 } 6603 if (firstMove && !inFullScreenMode()) { 6604 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6605 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6606 action, 0), TAP_TIMEOUT); 6607 } 6608 } 6609 if (mTouchMode == TOUCH_DONE_MODE 6610 || mPreventDefault == PREVENT_DEFAULT_YES) { 6611 // no dragging during scroll zoom animation, or when prevent 6612 // default is yes 6613 break; 6614 } 6615 if (mVelocityTracker == null) { 6616 Log.e(LOGTAG, "Got null mVelocityTracker when " 6617 + "mPreventDefault = " + mPreventDefault 6618 + " mDeferTouchProcess = " + mDeferTouchProcess 6619 + " mTouchMode = " + mTouchMode); 6620 } else { 6621 mVelocityTracker.addMovement(ev); 6622 } 6623 6624 if (mTouchMode != TOUCH_DRAG_MODE && 6625 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6626 6627 if (!mConfirmMove) { 6628 break; 6629 } 6630 6631 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6632 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6633 // track mLastTouchTime as we may need to do fling at 6634 // ACTION_UP 6635 mLastTouchTime = eventTime; 6636 break; 6637 } 6638 6639 // Only lock dragging to one axis if we don't have a scale in progress. 6640 // Scaling implies free-roaming movement. Note this is only ever a question 6641 // if mZoomManager.supportsPanDuringZoom() is true. 6642 final ScaleGestureDetector detector = 6643 mZoomManager.getMultiTouchGestureDetector(); 6644 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6645 if (detector == null || !detector.isInProgress()) { 6646 // if it starts nearly horizontal or vertical, enforce it 6647 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6648 mSnapScrollMode = SNAP_X; 6649 mSnapPositive = deltaX > 0; 6650 mAverageAngle = ANGLE_HORIZ; 6651 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6652 mSnapScrollMode = SNAP_Y; 6653 mSnapPositive = deltaY > 0; 6654 mAverageAngle = ANGLE_VERT; 6655 } 6656 } 6657 6658 mTouchMode = TOUCH_DRAG_MODE; 6659 mLastTouchX = x; 6660 mLastTouchY = y; 6661 deltaX = 0; 6662 deltaY = 0; 6663 6664 startScrollingLayer(x, y); 6665 startDrag(); 6666 } 6667 6668 // do pan 6669 boolean done = false; 6670 boolean keepScrollBarsVisible = false; 6671 if (deltaX == 0 && deltaY == 0) { 6672 keepScrollBarsVisible = done = true; 6673 } else { 6674 mAverageAngle += 6675 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6676 / MMA_WEIGHT_N; 6677 if (mSnapScrollMode != SNAP_NONE) { 6678 if (mSnapScrollMode == SNAP_Y) { 6679 // radical change means getting out of snap mode 6680 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6681 mSnapScrollMode = SNAP_NONE; 6682 } 6683 } 6684 if (mSnapScrollMode == SNAP_X) { 6685 // radical change means getting out of snap mode 6686 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6687 mSnapScrollMode = SNAP_NONE; 6688 } 6689 } 6690 } else { 6691 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6692 mSnapScrollMode = SNAP_X; 6693 mSnapPositive = deltaX > 0; 6694 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6695 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6696 mSnapScrollMode = SNAP_Y; 6697 mSnapPositive = deltaY > 0; 6698 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6699 } 6700 } 6701 if (mSnapScrollMode != SNAP_NONE) { 6702 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6703 deltaY = 0; 6704 } else { 6705 deltaX = 0; 6706 } 6707 } 6708 mLastTouchX = x; 6709 mLastTouchY = y; 6710 6711 if (deltaX * deltaX + deltaY * deltaY > mTouchSlopSquare) { 6712 mHeldMotionless = MOTIONLESS_FALSE; 6713 nativeSetIsScrolling(true); 6714 } else { 6715 mHeldMotionless = MOTIONLESS_TRUE; 6716 nativeSetIsScrolling(false); 6717 keepScrollBarsVisible = true; 6718 } 6719 6720 mLastTouchTime = eventTime; 6721 } 6722 6723 doDrag(deltaX, deltaY); 6724 6725 // Turn off scrollbars when dragging a layer. 6726 if (keepScrollBarsVisible && 6727 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6728 if (mHeldMotionless != MOTIONLESS_TRUE) { 6729 mHeldMotionless = MOTIONLESS_TRUE; 6730 invalidate(); 6731 } 6732 // keep the scrollbar on the screen even there is no scroll 6733 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6734 false); 6735 // Post a message so that we'll keep them alive while we're not scrolling. 6736 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6737 .obtainMessage(AWAKEN_SCROLL_BARS), 6738 ViewConfiguration.getScrollDefaultDelay()); 6739 // return false to indicate that we can't pan out of the 6740 // view space 6741 return !done; 6742 } else { 6743 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6744 } 6745 break; 6746 } 6747 case MotionEvent.ACTION_UP: { 6748 if (!isFocused()) requestFocus(); 6749 // pass the touch events from UI thread to WebCore thread 6750 if (shouldForwardTouchEvent()) { 6751 TouchEventData ted = new TouchEventData(); 6752 ted.mIds = new int[1]; 6753 ted.mIds[0] = ev.getPointerId(0); 6754 ted.mAction = action; 6755 ted.mPoints = new Point[1]; 6756 ted.mPoints[0] = new Point(contentX, contentY); 6757 ted.mPointsInView = new Point[1]; 6758 ted.mPointsInView[0] = new Point(x, y); 6759 ted.mMetaState = ev.getMetaState(); 6760 ted.mReprocess = mDeferTouchProcess; 6761 ted.mNativeLayer = mCurrentScrollingLayerId; 6762 ted.mNativeLayerRect.set(mScrollingLayerRect); 6763 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6764 mTouchEventQueue.preQueueTouchEventData(ted); 6765 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6766 } 6767 mLastTouchUpTime = eventTime; 6768 if (mSentAutoScrollMessage) { 6769 mAutoScrollX = mAutoScrollY = 0; 6770 } 6771 switch (mTouchMode) { 6772 case TOUCH_DOUBLE_TAP_MODE: // double tap 6773 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6774 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6775 if (inFullScreenMode() || mDeferTouchProcess) { 6776 TouchEventData ted = new TouchEventData(); 6777 ted.mIds = new int[1]; 6778 ted.mIds[0] = ev.getPointerId(0); 6779 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6780 ted.mPoints = new Point[1]; 6781 ted.mPoints[0] = new Point(contentX, contentY); 6782 ted.mPointsInView = new Point[1]; 6783 ted.mPointsInView[0] = new Point(x, y); 6784 ted.mMetaState = ev.getMetaState(); 6785 ted.mReprocess = mDeferTouchProcess; 6786 ted.mNativeLayer = nativeScrollableLayer( 6787 contentX, contentY, 6788 ted.mNativeLayerRect, null); 6789 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6790 mTouchEventQueue.preQueueTouchEventData(ted); 6791 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6792 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6793 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6794 mTouchMode = TOUCH_DONE_MODE; 6795 } 6796 break; 6797 case TOUCH_INIT_MODE: // tap 6798 case TOUCH_SHORTPRESS_START_MODE: 6799 case TOUCH_SHORTPRESS_MODE: 6800 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6801 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6802 if (mConfirmMove) { 6803 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6804 " WebCore's response for touch down."); 6805 if (mPreventDefault != PREVENT_DEFAULT_YES 6806 && (computeMaxScrollX() > 0 6807 || computeMaxScrollY() > 0)) { 6808 // If the user has performed a very quick touch 6809 // sequence it is possible that we may get here 6810 // before WebCore has had a chance to process the events. 6811 // In this case, any call to preventDefault in the 6812 // JS touch handler will not have been executed yet. 6813 // Hence we will see both the UI (now) and WebCore 6814 // (when context switches) handling the event, 6815 // regardless of whether the web developer actually 6816 // doeses preventDefault in their touch handler. This 6817 // is the nature of our asynchronous touch model. 6818 6819 // we will not rewrite drag code here, but we 6820 // will try fling if it applies. 6821 WebViewCore.reducePriority(); 6822 // to get better performance, pause updating the 6823 // picture 6824 WebViewCore.pauseUpdatePicture(mWebViewCore); 6825 // fall through to TOUCH_DRAG_MODE 6826 } else { 6827 // WebKit may consume the touch event and modify 6828 // DOM. drawContentPicture() will be called with 6829 // animateSroll as true for better performance. 6830 // Force redraw in high-quality. 6831 invalidate(); 6832 break; 6833 } 6834 } else { 6835 if (mSelectingText) { 6836 // tapping on selection or controls does nothing 6837 if (!mSelectionStarted) { 6838 selectionDone(); 6839 } 6840 break; 6841 } 6842 // only trigger double tap if the WebView is 6843 // scalable 6844 if (mTouchMode == TOUCH_INIT_MODE 6845 && (canZoomIn() || canZoomOut())) { 6846 mPrivateHandler.sendEmptyMessageDelayed( 6847 RELEASE_SINGLE_TAP, ViewConfiguration 6848 .getDoubleTapTimeout()); 6849 } else { 6850 doShortPress(); 6851 } 6852 break; 6853 } 6854 case TOUCH_DRAG_MODE: 6855 case TOUCH_DRAG_LAYER_MODE: 6856 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6857 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6858 // if the user waits a while w/o moving before the 6859 // up, we don't want to do a fling 6860 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6861 if (mVelocityTracker == null) { 6862 Log.e(LOGTAG, "Got null mVelocityTracker when " 6863 + "mPreventDefault = " 6864 + mPreventDefault 6865 + " mDeferTouchProcess = " 6866 + mDeferTouchProcess); 6867 } else { 6868 mVelocityTracker.addMovement(ev); 6869 } 6870 // set to MOTIONLESS_IGNORE so that it won't keep 6871 // removing and sending message in 6872 // drawCoreAndCursorRing() 6873 mHeldMotionless = MOTIONLESS_IGNORE; 6874 doFling(); 6875 break; 6876 } else { 6877 if (mScroller.springBack(mScrollX, mScrollY, 0, 6878 computeMaxScrollX(), 0, 6879 computeMaxScrollY())) { 6880 invalidate(); 6881 } 6882 } 6883 // redraw in high-quality, as we're done dragging 6884 mHeldMotionless = MOTIONLESS_TRUE; 6885 invalidate(); 6886 // fall through 6887 case TOUCH_DRAG_START_MODE: 6888 // TOUCH_DRAG_START_MODE should not happen for the real 6889 // device as we almost certain will get a MOVE. But this 6890 // is possible on emulator. 6891 mLastVelocity = 0; 6892 WebViewCore.resumePriority(); 6893 if (!mSelectingText) { 6894 WebViewCore.resumeUpdatePicture(mWebViewCore); 6895 } 6896 break; 6897 } 6898 stopTouch(); 6899 break; 6900 } 6901 case MotionEvent.ACTION_CANCEL: { 6902 if (mTouchMode == TOUCH_DRAG_MODE) { 6903 mScroller.springBack(mScrollX, mScrollY, 0, 6904 computeMaxScrollX(), 0, computeMaxScrollY()); 6905 invalidate(); 6906 } 6907 cancelWebCoreTouchEvent(contentX, contentY, false); 6908 cancelTouch(); 6909 break; 6910 } 6911 } 6912 return true; 6913 } 6914 6915 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6916 TouchEventData ted = new TouchEventData(); 6917 ted.mAction = ev.getActionMasked(); 6918 final int count = ev.getPointerCount(); 6919 ted.mIds = new int[count]; 6920 ted.mPoints = new Point[count]; 6921 ted.mPointsInView = new Point[count]; 6922 for (int c = 0; c < count; c++) { 6923 ted.mIds[c] = ev.getPointerId(c); 6924 int x = viewToContentX((int) ev.getX(c) + mScrollX); 6925 int y = viewToContentY((int) ev.getY(c) + mScrollY); 6926 ted.mPoints[c] = new Point(x, y); 6927 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6928 } 6929 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6930 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6931 ted.mActionIndex = ev.getActionIndex(); 6932 } 6933 ted.mMetaState = ev.getMetaState(); 6934 ted.mReprocess = true; 6935 ted.mMotionEvent = MotionEvent.obtain(ev); 6936 ted.mSequence = sequence; 6937 mTouchEventQueue.preQueueTouchEventData(ted); 6938 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6939 cancelLongPress(); 6940 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6941 } 6942 6943 void handleMultiTouchInWebView(MotionEvent ev) { 6944 if (DebugFlags.WEB_VIEW) { 6945 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6946 + " mTouchMode=" + mTouchMode 6947 + " numPointers=" + ev.getPointerCount() 6948 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6949 } 6950 6951 final ScaleGestureDetector detector = 6952 mZoomManager.getMultiTouchGestureDetector(); 6953 6954 // A few apps use WebView but don't instantiate gesture detector. 6955 // We don't need to support multi touch for them. 6956 if (detector == null) return; 6957 6958 float x = ev.getX(); 6959 float y = ev.getY(); 6960 6961 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6962 detector.onTouchEvent(ev); 6963 6964 if (detector.isInProgress()) { 6965 if (DebugFlags.WEB_VIEW) { 6966 Log.v(LOGTAG, "detector is in progress"); 6967 } 6968 mLastTouchTime = ev.getEventTime(); 6969 x = detector.getFocusX(); 6970 y = detector.getFocusY(); 6971 6972 cancelLongPress(); 6973 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6974 if (!mZoomManager.supportsPanDuringZoom()) { 6975 return; 6976 } 6977 mTouchMode = TOUCH_DRAG_MODE; 6978 if (mVelocityTracker == null) { 6979 mVelocityTracker = VelocityTracker.obtain(); 6980 } 6981 } 6982 } 6983 6984 int action = ev.getActionMasked(); 6985 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6986 cancelTouch(); 6987 action = MotionEvent.ACTION_DOWN; 6988 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 6989 // set mLastTouchX/Y to the remaining points for multi-touch. 6990 mLastTouchX = Math.round(x); 6991 mLastTouchY = Math.round(y); 6992 } else if (action == MotionEvent.ACTION_MOVE) { 6993 // negative x or y indicate it is on the edge, skip it. 6994 if (x < 0 || y < 0) { 6995 return; 6996 } 6997 } 6998 6999 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 7000 } 7001 7002 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 7003 if (shouldForwardTouchEvent()) { 7004 if (removeEvents) { 7005 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 7006 } 7007 TouchEventData ted = new TouchEventData(); 7008 ted.mIds = new int[1]; 7009 ted.mIds[0] = 0; 7010 ted.mPoints = new Point[1]; 7011 ted.mPoints[0] = new Point(x, y); 7012 ted.mPointsInView = new Point[1]; 7013 int viewX = contentToViewX(x) - mScrollX; 7014 int viewY = contentToViewY(y) - mScrollY; 7015 ted.mPointsInView[0] = new Point(viewX, viewY); 7016 ted.mAction = MotionEvent.ACTION_CANCEL; 7017 ted.mNativeLayer = nativeScrollableLayer( 7018 x, y, ted.mNativeLayerRect, null); 7019 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 7020 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7021 mPreventDefault = PREVENT_DEFAULT_IGNORE; 7022 7023 if (removeEvents) { 7024 // Mark this after sending the message above; we should 7025 // be willing to ignore the cancel event that we just sent. 7026 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 7027 } 7028 } 7029 } 7030 7031 private void startTouch(float x, float y, long eventTime) { 7032 // Remember where the motion event started 7033 mStartTouchX = mLastTouchX = Math.round(x); 7034 mStartTouchY = mLastTouchY = Math.round(y); 7035 mLastTouchTime = eventTime; 7036 mVelocityTracker = VelocityTracker.obtain(); 7037 mSnapScrollMode = SNAP_NONE; 7038 mPrivateHandler.sendEmptyMessageDelayed(UPDATE_SELECTION, 7039 ViewConfiguration.getTapTimeout()); 7040 } 7041 7042 private void startDrag() { 7043 WebViewCore.reducePriority(); 7044 // to get better performance, pause updating the picture 7045 WebViewCore.pauseUpdatePicture(mWebViewCore); 7046 nativeSetIsScrolling(true); 7047 7048 if (!mDragFromTextInput) { 7049 nativeHideCursor(); 7050 } 7051 7052 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 7053 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 7054 mZoomManager.invokeZoomPicker(); 7055 } 7056 } 7057 7058 private void doDrag(int deltaX, int deltaY) { 7059 if ((deltaX | deltaY) != 0) { 7060 int oldX = mScrollX; 7061 int oldY = mScrollY; 7062 int rangeX = computeMaxScrollX(); 7063 int rangeY = computeMaxScrollY(); 7064 // Check for the original scrolling layer in case we change 7065 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 7066 // reached the edge of a layer but mScrollingLayer will be non-zero 7067 // if we initiated the drag on a layer. 7068 if (mCurrentScrollingLayerId != 0) { 7069 final int contentX = viewToContentDimension(deltaX); 7070 final int contentY = viewToContentDimension(deltaY); 7071 7072 // Check the scrolling bounds to see if we will actually do any 7073 // scrolling. The rectangle is in document coordinates. 7074 final int maxX = mScrollingLayerRect.right; 7075 final int maxY = mScrollingLayerRect.bottom; 7076 final int resultX = Math.max(0, 7077 Math.min(mScrollingLayerRect.left + contentX, maxX)); 7078 final int resultY = Math.max(0, 7079 Math.min(mScrollingLayerRect.top + contentY, maxY)); 7080 7081 if (resultX != mScrollingLayerRect.left || 7082 resultY != mScrollingLayerRect.top) { 7083 // In case we switched to dragging the page. 7084 mTouchMode = TOUCH_DRAG_LAYER_MODE; 7085 deltaX = contentX; 7086 deltaY = contentY; 7087 oldX = mScrollingLayerRect.left; 7088 oldY = mScrollingLayerRect.top; 7089 rangeX = maxX; 7090 rangeY = maxY; 7091 } else { 7092 // Scroll the main page if we are not going to scroll the 7093 // layer. This does not reset mScrollingLayer in case the 7094 // user changes directions and the layer can scroll the 7095 // other way. 7096 mTouchMode = TOUCH_DRAG_MODE; 7097 } 7098 } 7099 7100 if (mOverScrollGlow != null) { 7101 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 7102 } 7103 7104 overScrollBy(deltaX, deltaY, oldX, oldY, 7105 rangeX, rangeY, 7106 mOverscrollDistance, mOverscrollDistance, true); 7107 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 7108 invalidate(); 7109 } 7110 } 7111 mZoomManager.keepZoomPickerVisible(); 7112 } 7113 7114 private void stopTouch() { 7115 if (mScroller.isFinished() && !mSelectingText 7116 && (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 7117 WebViewCore.resumePriority(); 7118 WebViewCore.resumeUpdatePicture(mWebViewCore); 7119 nativeSetIsScrolling(false); 7120 } 7121 7122 // we also use mVelocityTracker == null to tell us that we are 7123 // not "moving around", so we can take the slower/prettier 7124 // mode in the drawing code 7125 if (mVelocityTracker != null) { 7126 mVelocityTracker.recycle(); 7127 mVelocityTracker = null; 7128 } 7129 7130 // Release any pulled glows 7131 if (mOverScrollGlow != null) { 7132 mOverScrollGlow.releaseAll(); 7133 } 7134 7135 if (mSelectingText) { 7136 mSelectionStarted = false; 7137 syncSelectionCursors(); 7138 invalidate(); 7139 } 7140 } 7141 7142 private void cancelTouch() { 7143 // we also use mVelocityTracker == null to tell us that we are 7144 // not "moving around", so we can take the slower/prettier 7145 // mode in the drawing code 7146 if (mVelocityTracker != null) { 7147 mVelocityTracker.recycle(); 7148 mVelocityTracker = null; 7149 } 7150 7151 if ((mTouchMode == TOUCH_DRAG_MODE 7152 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 7153 WebViewCore.resumePriority(); 7154 WebViewCore.resumeUpdatePicture(mWebViewCore); 7155 nativeSetIsScrolling(false); 7156 } 7157 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 7158 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7159 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 7160 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 7161 if (sDisableNavcache) { 7162 removeTouchHighlight(); 7163 } 7164 mHeldMotionless = MOTIONLESS_TRUE; 7165 mTouchMode = TOUCH_DONE_MODE; 7166 nativeHideCursor(); 7167 } 7168 7169 @Override 7170 public boolean onGenericMotionEvent(MotionEvent event) { 7171 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 7172 switch (event.getAction()) { 7173 case MotionEvent.ACTION_SCROLL: { 7174 final float vscroll; 7175 final float hscroll; 7176 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 7177 vscroll = 0; 7178 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 7179 } else { 7180 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 7181 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 7182 } 7183 if (hscroll != 0 || vscroll != 0) { 7184 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 7185 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 7186 if (pinScrollBy(hdelta, vdelta, false, 0)) { 7187 return true; 7188 } 7189 } 7190 } 7191 } 7192 } 7193 return super.onGenericMotionEvent(event); 7194 } 7195 7196 private long mTrackballFirstTime = 0; 7197 private long mTrackballLastTime = 0; 7198 private float mTrackballRemainsX = 0.0f; 7199 private float mTrackballRemainsY = 0.0f; 7200 private int mTrackballXMove = 0; 7201 private int mTrackballYMove = 0; 7202 private boolean mSelectingText = false; 7203 private boolean mSelectionStarted = false; 7204 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 7205 private static final int TRACKBALL_TIMEOUT = 200; 7206 private static final int TRACKBALL_WAIT = 100; 7207 private static final int TRACKBALL_SCALE = 400; 7208 private static final int TRACKBALL_SCROLL_COUNT = 5; 7209 private static final int TRACKBALL_MOVE_COUNT = 10; 7210 private static final int TRACKBALL_MULTIPLIER = 3; 7211 private static final int SELECT_CURSOR_OFFSET = 16; 7212 private static final int SELECT_SCROLL = 5; 7213 private int mSelectX = 0; 7214 private int mSelectY = 0; 7215 private boolean mFocusSizeChanged = false; 7216 private boolean mTrackballDown = false; 7217 private long mTrackballUpTime = 0; 7218 private long mLastCursorTime = 0; 7219 private Rect mLastCursorBounds; 7220 7221 // Set by default; BrowserActivity clears to interpret trackball data 7222 // directly for movement. Currently, the framework only passes 7223 // arrow key events, not trackball events, from one child to the next 7224 private boolean mMapTrackballToArrowKeys = true; 7225 7226 private DrawData mDelaySetPicture; 7227 private DrawData mLoadedPicture; 7228 7229 public void setMapTrackballToArrowKeys(boolean setMap) { 7230 checkThread(); 7231 mMapTrackballToArrowKeys = setMap; 7232 } 7233 7234 void resetTrackballTime() { 7235 mTrackballLastTime = 0; 7236 } 7237 7238 @Override 7239 public boolean onTrackballEvent(MotionEvent ev) { 7240 long time = ev.getEventTime(); 7241 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 7242 if (ev.getY() > 0) pageDown(true); 7243 if (ev.getY() < 0) pageUp(true); 7244 return true; 7245 } 7246 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 7247 if (mSelectingText) { 7248 return true; // discard press if copy in progress 7249 } 7250 mTrackballDown = true; 7251 if (mNativeClass == 0) { 7252 return false; 7253 } 7254 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 7255 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 7256 nativeSelectBestAt(mLastCursorBounds); 7257 } 7258 if (DebugFlags.WEB_VIEW) { 7259 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 7260 + " time=" + time 7261 + " mLastCursorTime=" + mLastCursorTime); 7262 } 7263 if (isInTouchMode()) requestFocusFromTouch(); 7264 return false; // let common code in onKeyDown at it 7265 } 7266 if (ev.getAction() == MotionEvent.ACTION_UP) { 7267 // LONG_PRESS_CENTER is set in common onKeyDown 7268 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 7269 mTrackballDown = false; 7270 mTrackballUpTime = time; 7271 if (mSelectingText) { 7272 copySelection(); 7273 selectionDone(); 7274 return true; // discard press if copy in progress 7275 } 7276 if (DebugFlags.WEB_VIEW) { 7277 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 7278 + " time=" + time 7279 ); 7280 } 7281 return false; // let common code in onKeyUp at it 7282 } 7283 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 7284 AccessibilityManager.getInstance(mContext).isEnabled()) { 7285 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 7286 return false; 7287 } 7288 if (mTrackballDown) { 7289 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 7290 return true; // discard move if trackball is down 7291 } 7292 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 7293 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 7294 return true; 7295 } 7296 // TODO: alternatively we can do panning as touch does 7297 switchOutDrawHistory(); 7298 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 7299 if (DebugFlags.WEB_VIEW) { 7300 Log.v(LOGTAG, "onTrackballEvent time=" 7301 + time + " last=" + mTrackballLastTime); 7302 } 7303 mTrackballFirstTime = time; 7304 mTrackballXMove = mTrackballYMove = 0; 7305 } 7306 mTrackballLastTime = time; 7307 if (DebugFlags.WEB_VIEW) { 7308 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 7309 } 7310 mTrackballRemainsX += ev.getX(); 7311 mTrackballRemainsY += ev.getY(); 7312 doTrackball(time, ev.getMetaState()); 7313 return true; 7314 } 7315 7316 private int scaleTrackballX(float xRate, int width) { 7317 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 7318 int nextXMove = xMove; 7319 if (xMove > 0) { 7320 if (xMove > mTrackballXMove) { 7321 xMove -= mTrackballXMove; 7322 } 7323 } else if (xMove < mTrackballXMove) { 7324 xMove -= mTrackballXMove; 7325 } 7326 mTrackballXMove = nextXMove; 7327 return xMove; 7328 } 7329 7330 private int scaleTrackballY(float yRate, int height) { 7331 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 7332 int nextYMove = yMove; 7333 if (yMove > 0) { 7334 if (yMove > mTrackballYMove) { 7335 yMove -= mTrackballYMove; 7336 } 7337 } else if (yMove < mTrackballYMove) { 7338 yMove -= mTrackballYMove; 7339 } 7340 mTrackballYMove = nextYMove; 7341 return yMove; 7342 } 7343 7344 private int keyCodeToSoundsEffect(int keyCode) { 7345 switch(keyCode) { 7346 case KeyEvent.KEYCODE_DPAD_UP: 7347 return SoundEffectConstants.NAVIGATION_UP; 7348 case KeyEvent.KEYCODE_DPAD_RIGHT: 7349 return SoundEffectConstants.NAVIGATION_RIGHT; 7350 case KeyEvent.KEYCODE_DPAD_DOWN: 7351 return SoundEffectConstants.NAVIGATION_DOWN; 7352 case KeyEvent.KEYCODE_DPAD_LEFT: 7353 return SoundEffectConstants.NAVIGATION_LEFT; 7354 } 7355 throw new IllegalArgumentException("keyCode must be one of " + 7356 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 7357 "KEYCODE_DPAD_LEFT}."); 7358 } 7359 7360 private void doTrackball(long time, int metaState) { 7361 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 7362 if (elapsed == 0) { 7363 elapsed = TRACKBALL_TIMEOUT; 7364 } 7365 float xRate = mTrackballRemainsX * 1000 / elapsed; 7366 float yRate = mTrackballRemainsY * 1000 / elapsed; 7367 int viewWidth = getViewWidth(); 7368 int viewHeight = getViewHeight(); 7369 float ax = Math.abs(xRate); 7370 float ay = Math.abs(yRate); 7371 float maxA = Math.max(ax, ay); 7372 if (DebugFlags.WEB_VIEW) { 7373 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 7374 + " xRate=" + xRate 7375 + " yRate=" + yRate 7376 + " mTrackballRemainsX=" + mTrackballRemainsX 7377 + " mTrackballRemainsY=" + mTrackballRemainsY); 7378 } 7379 int width = mContentWidth - viewWidth; 7380 int height = mContentHeight - viewHeight; 7381 if (width < 0) width = 0; 7382 if (height < 0) height = 0; 7383 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 7384 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 7385 maxA = Math.max(ax, ay); 7386 int count = Math.max(0, (int) maxA); 7387 int oldScrollX = mScrollX; 7388 int oldScrollY = mScrollY; 7389 if (count > 0) { 7390 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 7391 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 7392 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 7393 KeyEvent.KEYCODE_DPAD_RIGHT; 7394 count = Math.min(count, TRACKBALL_MOVE_COUNT); 7395 if (DebugFlags.WEB_VIEW) { 7396 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 7397 + " count=" + count 7398 + " mTrackballRemainsX=" + mTrackballRemainsX 7399 + " mTrackballRemainsY=" + mTrackballRemainsY); 7400 } 7401 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 7402 for (int i = 0; i < count; i++) { 7403 letPageHandleNavKey(selectKeyCode, time, true, metaState); 7404 } 7405 letPageHandleNavKey(selectKeyCode, time, false, metaState); 7406 } else if (navHandledKey(selectKeyCode, count, false, time)) { 7407 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 7408 } 7409 mTrackballRemainsX = mTrackballRemainsY = 0; 7410 } 7411 if (count >= TRACKBALL_SCROLL_COUNT) { 7412 int xMove = scaleTrackballX(xRate, width); 7413 int yMove = scaleTrackballY(yRate, height); 7414 if (DebugFlags.WEB_VIEW) { 7415 Log.v(LOGTAG, "doTrackball pinScrollBy" 7416 + " count=" + count 7417 + " xMove=" + xMove + " yMove=" + yMove 7418 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 7419 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 7420 ); 7421 } 7422 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 7423 xMove = 0; 7424 } 7425 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 7426 yMove = 0; 7427 } 7428 if (xMove != 0 || yMove != 0) { 7429 pinScrollBy(xMove, yMove, true, 0); 7430 } 7431 } 7432 } 7433 7434 /** 7435 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 7436 * @return Maximum horizontal scroll position within real content 7437 */ 7438 int computeMaxScrollX() { 7439 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 7440 } 7441 7442 /** 7443 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 7444 * @return Maximum vertical scroll position within real content 7445 */ 7446 int computeMaxScrollY() { 7447 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 7448 - getViewHeightWithTitle(), 0); 7449 } 7450 7451 boolean updateScrollCoordinates(int x, int y) { 7452 int oldX = mScrollX; 7453 int oldY = mScrollY; 7454 mScrollX = x; 7455 mScrollY = y; 7456 if (oldX != mScrollX || oldY != mScrollY) { 7457 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 7458 return true; 7459 } else { 7460 return false; 7461 } 7462 } 7463 7464 public void flingScroll(int vx, int vy) { 7465 checkThread(); 7466 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 7467 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 7468 invalidate(); 7469 } 7470 7471 private void doFling() { 7472 if (mVelocityTracker == null) { 7473 return; 7474 } 7475 int maxX = computeMaxScrollX(); 7476 int maxY = computeMaxScrollY(); 7477 7478 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 7479 int vx = (int) mVelocityTracker.getXVelocity(); 7480 int vy = (int) mVelocityTracker.getYVelocity(); 7481 7482 int scrollX = mScrollX; 7483 int scrollY = mScrollY; 7484 int overscrollDistance = mOverscrollDistance; 7485 int overflingDistance = mOverflingDistance; 7486 7487 // Use the layer's scroll data if applicable. 7488 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 7489 scrollX = mScrollingLayerRect.left; 7490 scrollY = mScrollingLayerRect.top; 7491 maxX = mScrollingLayerRect.right; 7492 maxY = mScrollingLayerRect.bottom; 7493 // No overscrolling for layers. 7494 overscrollDistance = overflingDistance = 0; 7495 } 7496 7497 if (mSnapScrollMode != SNAP_NONE) { 7498 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 7499 vy = 0; 7500 } else { 7501 vx = 0; 7502 } 7503 } 7504 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 7505 WebViewCore.resumePriority(); 7506 if (!mSelectingText) { 7507 WebViewCore.resumeUpdatePicture(mWebViewCore); 7508 } 7509 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 7510 invalidate(); 7511 } 7512 return; 7513 } 7514 float currentVelocity = mScroller.getCurrVelocity(); 7515 float velocity = (float) Math.hypot(vx, vy); 7516 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 7517 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 7518 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 7519 - Math.atan2(vy, vx))); 7520 final float circle = (float) (Math.PI) * 2.0f; 7521 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 7522 vx += currentVelocity * mLastVelX / mLastVelocity; 7523 vy += currentVelocity * mLastVelY / mLastVelocity; 7524 velocity = (float) Math.hypot(vx, vy); 7525 if (DebugFlags.WEB_VIEW) { 7526 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 7527 } 7528 } else if (DebugFlags.WEB_VIEW) { 7529 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 7530 } 7531 } else if (DebugFlags.WEB_VIEW) { 7532 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 7533 + " current=" + currentVelocity 7534 + " vx=" + vx + " vy=" + vy 7535 + " maxX=" + maxX + " maxY=" + maxY 7536 + " scrollX=" + scrollX + " scrollY=" + scrollY 7537 + " layer=" + mCurrentScrollingLayerId); 7538 } 7539 7540 // Allow sloppy flings without overscrolling at the edges. 7541 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 7542 vx = 0; 7543 } 7544 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 7545 vy = 0; 7546 } 7547 7548 if (overscrollDistance < overflingDistance) { 7549 if ((vx > 0 && scrollX == -overscrollDistance) || 7550 (vx < 0 && scrollX == maxX + overscrollDistance)) { 7551 vx = 0; 7552 } 7553 if ((vy > 0 && scrollY == -overscrollDistance) || 7554 (vy < 0 && scrollY == maxY + overscrollDistance)) { 7555 vy = 0; 7556 } 7557 } 7558 7559 mLastVelX = vx; 7560 mLastVelY = vy; 7561 mLastVelocity = velocity; 7562 7563 // no horizontal overscroll if the content just fits 7564 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 7565 maxX == 0 ? 0 : overflingDistance, overflingDistance); 7566 // Duration is calculated based on velocity. With range boundaries and overscroll 7567 // we may not know how long the final animation will take. (Hence the deprecation 7568 // warning on the call below.) It's not a big deal for scroll bars but if webcore 7569 // resumes during this effect we will take a performance hit. See computeScroll; 7570 // we resume webcore there when the animation is finished. 7571 final int time = mScroller.getDuration(); 7572 7573 // Suppress scrollbars for layer scrolling. 7574 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 7575 awakenScrollBars(time); 7576 } 7577 7578 invalidate(); 7579 } 7580 7581 /** 7582 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 7583 * in charge of installing this view to the view hierarchy. This view will 7584 * become visible when the user starts scrolling via touch and fade away if 7585 * the user does not interact with it. 7586 * <p/> 7587 * API version 3 introduces a built-in zoom mechanism that is shown 7588 * automatically by the MapView. This is the preferred approach for 7589 * showing the zoom UI. 7590 * 7591 * @deprecated The built-in zoom mechanism is preferred, see 7592 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 7593 */ 7594 @Deprecated 7595 public View getZoomControls() { 7596 checkThread(); 7597 if (!getSettings().supportZoom()) { 7598 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7599 return null; 7600 } 7601 return mZoomManager.getExternalZoomPicker(); 7602 } 7603 7604 void dismissZoomControl() { 7605 mZoomManager.dismissZoomPicker(); 7606 } 7607 7608 float getDefaultZoomScale() { 7609 return mZoomManager.getDefaultScale(); 7610 } 7611 7612 /** 7613 * Return the overview scale of the WebView 7614 * @return The overview scale. 7615 */ 7616 float getZoomOverviewScale() { 7617 return mZoomManager.getZoomOverviewScale(); 7618 } 7619 7620 /** 7621 * @return TRUE if the WebView can be zoomed in. 7622 */ 7623 public boolean canZoomIn() { 7624 checkThread(); 7625 return mZoomManager.canZoomIn(); 7626 } 7627 7628 /** 7629 * @return TRUE if the WebView can be zoomed out. 7630 */ 7631 public boolean canZoomOut() { 7632 checkThread(); 7633 return mZoomManager.canZoomOut(); 7634 } 7635 7636 /** 7637 * Perform zoom in in the webview 7638 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7639 */ 7640 public boolean zoomIn() { 7641 checkThread(); 7642 return mZoomManager.zoomIn(); 7643 } 7644 7645 /** 7646 * Perform zoom out in the webview 7647 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7648 */ 7649 public boolean zoomOut() { 7650 checkThread(); 7651 return mZoomManager.zoomOut(); 7652 } 7653 7654 /** 7655 * This selects the best clickable target at mLastTouchX and mLastTouchY 7656 * and calls showCursorTimed on the native side 7657 */ 7658 private void updateSelection() { 7659 if (mNativeClass == 0 || sDisableNavcache) { 7660 return; 7661 } 7662 mPrivateHandler.removeMessages(UPDATE_SELECTION); 7663 // mLastTouchX and mLastTouchY are the point in the current viewport 7664 int contentX = viewToContentX(mLastTouchX + mScrollX); 7665 int contentY = viewToContentY(mLastTouchY + mScrollY); 7666 int slop = viewToContentDimension(mNavSlop); 7667 Rect rect = new Rect(contentX - slop, contentY - slop, 7668 contentX + slop, contentY + slop); 7669 nativeSelectBestAt(rect); 7670 mInitialHitTestResult = hitTestResult(null); 7671 } 7672 7673 /** 7674 * Scroll the focused text field to match the WebTextView 7675 * @param xPercent New x position of the WebTextView from 0 to 1. 7676 */ 7677 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7678 if (!inEditingMode() || mWebViewCore == null) { 7679 return; 7680 } 7681 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7682 new Float(xPercent)); 7683 } 7684 7685 /** 7686 * Scroll the focused textarea vertically to match the WebTextView 7687 * @param y New y position of the WebTextView in view coordinates 7688 */ 7689 /* package */ void scrollFocusedTextInputY(int y) { 7690 if (!inEditingMode() || mWebViewCore == null) { 7691 return; 7692 } 7693 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7694 } 7695 7696 /** 7697 * Set our starting point and time for a drag from the WebTextView. 7698 */ 7699 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7700 if (!inEditingMode()) { 7701 return; 7702 } 7703 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7704 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7705 mLastTouchTime = eventTime; 7706 if (!mScroller.isFinished()) { 7707 abortAnimation(); 7708 } 7709 mSnapScrollMode = SNAP_NONE; 7710 mVelocityTracker = VelocityTracker.obtain(); 7711 mTouchMode = TOUCH_DRAG_START_MODE; 7712 } 7713 7714 /** 7715 * Given a motion event from the WebTextView, set its location to our 7716 * coordinates, and handle the event. 7717 */ 7718 /*package*/ boolean textFieldDrag(MotionEvent event) { 7719 if (!inEditingMode()) { 7720 return false; 7721 } 7722 mDragFromTextInput = true; 7723 event.offsetLocation((mWebTextView.getLeft() - mScrollX), 7724 (mWebTextView.getTop() - mScrollY)); 7725 boolean result = onTouchEvent(event); 7726 mDragFromTextInput = false; 7727 return result; 7728 } 7729 7730 /** 7731 * Due a touch up from a WebTextView. This will be handled by webkit to 7732 * change the selection. 7733 * @param event MotionEvent in the WebTextView's coordinates. 7734 */ 7735 /*package*/ void touchUpOnTextField(MotionEvent event) { 7736 if (!inEditingMode()) { 7737 return; 7738 } 7739 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7740 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7741 int slop = viewToContentDimension(mNavSlop); 7742 nativeMotionUp(x, y, slop); 7743 } 7744 7745 /** 7746 * Called when pressing the center key or trackball on a textfield. 7747 */ 7748 /*package*/ void centerKeyPressOnTextField() { 7749 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7750 nativeCursorNodePointer()); 7751 } 7752 7753 private void doShortPress() { 7754 if (mNativeClass == 0) { 7755 return; 7756 } 7757 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7758 return; 7759 } 7760 mTouchMode = TOUCH_DONE_MODE; 7761 updateSelection(); 7762 switchOutDrawHistory(); 7763 // mLastTouchX and mLastTouchY are the point in the current viewport 7764 int contentX = viewToContentX(mLastTouchX + mScrollX); 7765 int contentY = viewToContentY(mLastTouchY + mScrollY); 7766 int slop = viewToContentDimension(mNavSlop); 7767 if (sDisableNavcache && !mTouchHighlightRegion.isEmpty()) { 7768 // set mTouchHighlightRequested to 0 to cause an immediate 7769 // drawing of the touch rings 7770 mTouchHighlightRequested = 0; 7771 invalidate(mTouchHighlightRegion.getBounds()); 7772 mPrivateHandler.postDelayed(new Runnable() { 7773 @Override 7774 public void run() { 7775 removeTouchHighlight(); 7776 } 7777 }, ViewConfiguration.getPressedStateDuration()); 7778 } 7779 if (sDisableNavcache) { 7780 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7781 // use "0" as generation id to inform WebKit to use the same x/y as 7782 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7783 touchUpData.mMoveGeneration = 0; 7784 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7785 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7786 WebViewCore.MotionUpData motionUpData = new WebViewCore 7787 .MotionUpData(); 7788 motionUpData.mFrame = nativeCacheHitFramePointer(); 7789 motionUpData.mNode = nativeCacheHitNodePointer(); 7790 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7791 motionUpData.mX = contentX; 7792 motionUpData.mY = contentY; 7793 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7794 motionUpData); 7795 } else { 7796 doMotionUp(contentX, contentY); 7797 } 7798 } 7799 7800 private void doMotionUp(int contentX, int contentY) { 7801 int slop = viewToContentDimension(mNavSlop); 7802 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7803 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7804 } 7805 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7806 playSoundEffect(SoundEffectConstants.CLICK); 7807 } 7808 } 7809 7810 void sendPluginDrawMsg() { 7811 mWebViewCore.sendMessage(EventHub.PLUGIN_SURFACE_READY); 7812 } 7813 7814 /** 7815 * Returns plugin bounds if x/y in content coordinates corresponds to a 7816 * plugin. Otherwise a NULL rectangle is returned. 7817 */ 7818 Rect getPluginBounds(int x, int y) { 7819 int slop = viewToContentDimension(mNavSlop); 7820 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7821 return nativeCacheHitNodeBounds(); 7822 } else { 7823 return null; 7824 } 7825 } 7826 7827 /* 7828 * Return true if the rect (e.g. plugin) is fully visible and maximized 7829 * inside the WebView. 7830 */ 7831 boolean isRectFitOnScreen(Rect rect) { 7832 final int rectWidth = rect.width(); 7833 final int rectHeight = rect.height(); 7834 final int viewWidth = getViewWidth(); 7835 final int viewHeight = getViewHeightWithTitle(); 7836 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7837 scale = mZoomManager.computeScaleWithLimits(scale); 7838 return !mZoomManager.willScaleTriggerZoom(scale) 7839 && contentToViewX(rect.left) >= mScrollX 7840 && contentToViewX(rect.right) <= mScrollX + viewWidth 7841 && contentToViewY(rect.top) >= mScrollY 7842 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7843 } 7844 7845 /* 7846 * Maximize and center the rectangle, specified in the document coordinate 7847 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7848 * animated scroll to center it. If the zoom needs to be changed, find the 7849 * zoom center and do a smooth zoom transition. The rect is in document 7850 * coordinates 7851 */ 7852 void centerFitRect(Rect rect) { 7853 final int rectWidth = rect.width(); 7854 final int rectHeight = rect.height(); 7855 final int viewWidth = getViewWidth(); 7856 final int viewHeight = getViewHeightWithTitle(); 7857 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7858 / rectHeight); 7859 scale = mZoomManager.computeScaleWithLimits(scale); 7860 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7861 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7862 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7863 true, 0); 7864 } else { 7865 float actualScale = mZoomManager.getScale(); 7866 float oldScreenX = rect.left * actualScale - mScrollX; 7867 float rectViewX = rect.left * scale; 7868 float rectViewWidth = rectWidth * scale; 7869 float newMaxWidth = mContentWidth * scale; 7870 float newScreenX = (viewWidth - rectViewWidth) / 2; 7871 // pin the newX to the WebView 7872 if (newScreenX > rectViewX) { 7873 newScreenX = rectViewX; 7874 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7875 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7876 } 7877 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7878 / (scale - actualScale); 7879 float oldScreenY = rect.top * actualScale + getTitleHeight() 7880 - mScrollY; 7881 float rectViewY = rect.top * scale + getTitleHeight(); 7882 float rectViewHeight = rectHeight * scale; 7883 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7884 float newScreenY = (viewHeight - rectViewHeight) / 2; 7885 // pin the newY to the WebView 7886 if (newScreenY > rectViewY) { 7887 newScreenY = rectViewY; 7888 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7889 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7890 } 7891 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7892 / (scale - actualScale); 7893 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7894 mZoomManager.startZoomAnimation(scale, false); 7895 } 7896 } 7897 7898 // Called by JNI to handle a touch on a node representing an email address, 7899 // address, or phone number 7900 private void overrideLoading(String url) { 7901 mCallbackProxy.uiOverrideUrlLoading(url); 7902 } 7903 7904 @Override 7905 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7906 // FIXME: If a subwindow is showing find, and the user touches the 7907 // background window, it can steal focus. 7908 if (mFindIsUp) return false; 7909 boolean result = false; 7910 if (inEditingMode()) { 7911 result = mWebTextView.requestFocus(direction, 7912 previouslyFocusedRect); 7913 } else { 7914 result = super.requestFocus(direction, previouslyFocusedRect); 7915 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 7916 // For cases such as GMail, where we gain focus from a direction, 7917 // we want to move to the first available link. 7918 // FIXME: If there are no visible links, we may not want to 7919 int fakeKeyDirection = 0; 7920 switch(direction) { 7921 case View.FOCUS_UP: 7922 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7923 break; 7924 case View.FOCUS_DOWN: 7925 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7926 break; 7927 case View.FOCUS_LEFT: 7928 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7929 break; 7930 case View.FOCUS_RIGHT: 7931 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7932 break; 7933 default: 7934 return result; 7935 } 7936 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7937 navHandledKey(fakeKeyDirection, 1, true, 0); 7938 } 7939 } 7940 } 7941 return result; 7942 } 7943 7944 @Override 7945 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7946 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7947 7948 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7949 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7950 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7951 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7952 7953 int measuredHeight = heightSize; 7954 int measuredWidth = widthSize; 7955 7956 // Grab the content size from WebViewCore. 7957 int contentHeight = contentToViewDimension(mContentHeight); 7958 int contentWidth = contentToViewDimension(mContentWidth); 7959 7960// Log.d(LOGTAG, "------- measure " + heightMode); 7961 7962 if (heightMode != MeasureSpec.EXACTLY) { 7963 mHeightCanMeasure = true; 7964 measuredHeight = contentHeight; 7965 if (heightMode == MeasureSpec.AT_MOST) { 7966 // If we are larger than the AT_MOST height, then our height can 7967 // no longer be measured and we should scroll internally. 7968 if (measuredHeight > heightSize) { 7969 measuredHeight = heightSize; 7970 mHeightCanMeasure = false; 7971 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7972 } 7973 } 7974 } else { 7975 mHeightCanMeasure = false; 7976 } 7977 if (mNativeClass != 0) { 7978 nativeSetHeightCanMeasure(mHeightCanMeasure); 7979 } 7980 // For the width, always use the given size unless unspecified. 7981 if (widthMode == MeasureSpec.UNSPECIFIED) { 7982 mWidthCanMeasure = true; 7983 measuredWidth = contentWidth; 7984 } else { 7985 if (measuredWidth < contentWidth) { 7986 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7987 } 7988 mWidthCanMeasure = false; 7989 } 7990 7991 synchronized (this) { 7992 setMeasuredDimension(measuredWidth, measuredHeight); 7993 } 7994 } 7995 7996 @Override 7997 public boolean requestChildRectangleOnScreen(View child, 7998 Rect rect, 7999 boolean immediate) { 8000 if (mNativeClass == 0) { 8001 return false; 8002 } 8003 // don't scroll while in zoom animation. When it is done, we will adjust 8004 // the necessary components (e.g., WebTextView if it is in editing mode) 8005 if (mZoomManager.isFixedLengthAnimationInProgress()) { 8006 return false; 8007 } 8008 8009 rect.offset(child.getLeft() - child.getScrollX(), 8010 child.getTop() - child.getScrollY()); 8011 8012 Rect content = new Rect(viewToContentX(mScrollX), 8013 viewToContentY(mScrollY), 8014 viewToContentX(mScrollX + getWidth() 8015 - getVerticalScrollbarWidth()), 8016 viewToContentY(mScrollY + getViewHeightWithTitle())); 8017 content = nativeSubtractLayers(content); 8018 int screenTop = contentToViewY(content.top); 8019 int screenBottom = contentToViewY(content.bottom); 8020 int height = screenBottom - screenTop; 8021 int scrollYDelta = 0; 8022 8023 if (rect.bottom > screenBottom) { 8024 int oneThirdOfScreenHeight = height / 3; 8025 if (rect.height() > 2 * oneThirdOfScreenHeight) { 8026 // If the rectangle is too tall to fit in the bottom two thirds 8027 // of the screen, place it at the top. 8028 scrollYDelta = rect.top - screenTop; 8029 } else { 8030 // If the rectangle will still fit on screen, we want its 8031 // top to be in the top third of the screen. 8032 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 8033 } 8034 } else if (rect.top < screenTop) { 8035 scrollYDelta = rect.top - screenTop; 8036 } 8037 8038 int screenLeft = contentToViewX(content.left); 8039 int screenRight = contentToViewX(content.right); 8040 int width = screenRight - screenLeft; 8041 int scrollXDelta = 0; 8042 8043 if (rect.right > screenRight && rect.left > screenLeft) { 8044 if (rect.width() > width) { 8045 scrollXDelta += (rect.left - screenLeft); 8046 } else { 8047 scrollXDelta += (rect.right - screenRight); 8048 } 8049 } else if (rect.left < screenLeft) { 8050 scrollXDelta -= (screenLeft - rect.left); 8051 } 8052 8053 if ((scrollYDelta | scrollXDelta) != 0) { 8054 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 8055 } 8056 8057 return false; 8058 } 8059 8060 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 8061 String replace, int newStart, int newEnd) { 8062 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 8063 arg.mReplace = replace; 8064 arg.mNewStart = newStart; 8065 arg.mNewEnd = newEnd; 8066 mTextGeneration++; 8067 arg.mTextGeneration = mTextGeneration; 8068 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 8069 } 8070 8071 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 8072 // check if mWebViewCore has been destroyed 8073 if (mWebViewCore == null) { 8074 return; 8075 } 8076 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 8077 arg.mEvent = event; 8078 arg.mCurrentText = currentText; 8079 // Increase our text generation number, and pass it to webcore thread 8080 mTextGeneration++; 8081 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 8082 // WebKit's document state is not saved until about to leave the page. 8083 // To make sure the host application, like Browser, has the up to date 8084 // document state when it goes to background, we force to save the 8085 // document state. 8086 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 8087 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 8088 cursorData(), 1000); 8089 } 8090 8091 /** 8092 * @hide 8093 */ 8094 public synchronized WebViewCore getWebViewCore() { 8095 return mWebViewCore; 8096 } 8097 8098 /** 8099 * Used only by TouchEventQueue to store pending touch events. 8100 */ 8101 private static class QueuedTouch { 8102 long mSequence; 8103 MotionEvent mEvent; // Optional 8104 TouchEventData mTed; // Optional 8105 8106 QueuedTouch mNext; 8107 8108 public QueuedTouch set(TouchEventData ted) { 8109 mSequence = ted.mSequence; 8110 mTed = ted; 8111 mEvent = null; 8112 mNext = null; 8113 return this; 8114 } 8115 8116 public QueuedTouch set(MotionEvent ev, long sequence) { 8117 mEvent = MotionEvent.obtain(ev); 8118 mSequence = sequence; 8119 mTed = null; 8120 mNext = null; 8121 return this; 8122 } 8123 8124 public QueuedTouch add(QueuedTouch other) { 8125 if (other.mSequence < mSequence) { 8126 other.mNext = this; 8127 return other; 8128 } 8129 8130 QueuedTouch insertAt = this; 8131 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 8132 insertAt = insertAt.mNext; 8133 } 8134 other.mNext = insertAt.mNext; 8135 insertAt.mNext = other; 8136 return this; 8137 } 8138 } 8139 8140 /** 8141 * WebView handles touch events asynchronously since some events must be passed to WebKit 8142 * for potentially slower processing. TouchEventQueue serializes touch events regardless 8143 * of which path they take to ensure that no events are ever processed out of order 8144 * by WebView. 8145 */ 8146 private class TouchEventQueue { 8147 private long mNextTouchSequence = Long.MIN_VALUE + 1; 8148 private long mLastHandledTouchSequence = Long.MIN_VALUE; 8149 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 8150 8151 // Events waiting to be processed. 8152 private QueuedTouch mTouchEventQueue; 8153 8154 // Known events that are waiting on a response before being enqueued. 8155 private QueuedTouch mPreQueue; 8156 8157 // Pool of QueuedTouch objects saved for later use. 8158 private QueuedTouch mQueuedTouchRecycleBin; 8159 private int mQueuedTouchRecycleCount; 8160 8161 private long mLastEventTime = Long.MAX_VALUE; 8162 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 8163 8164 // milliseconds until we abandon hope of getting all of a previous gesture 8165 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 8166 8167 private QueuedTouch obtainQueuedTouch() { 8168 if (mQueuedTouchRecycleBin != null) { 8169 QueuedTouch result = mQueuedTouchRecycleBin; 8170 mQueuedTouchRecycleBin = result.mNext; 8171 mQueuedTouchRecycleCount--; 8172 return result; 8173 } 8174 return new QueuedTouch(); 8175 } 8176 8177 /** 8178 * Allow events with any currently missing sequence numbers to be skipped in processing. 8179 */ 8180 public void ignoreCurrentlyMissingEvents() { 8181 mIgnoreUntilSequence = mNextTouchSequence; 8182 8183 // Run any events we have available and complete, pre-queued or otherwise. 8184 runQueuedAndPreQueuedEvents(); 8185 } 8186 8187 private void runQueuedAndPreQueuedEvents() { 8188 QueuedTouch qd = mPreQueue; 8189 boolean fromPreQueue = true; 8190 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8191 handleQueuedTouch(qd); 8192 QueuedTouch recycleMe = qd; 8193 if (fromPreQueue) { 8194 mPreQueue = qd.mNext; 8195 } else { 8196 mTouchEventQueue = qd.mNext; 8197 } 8198 recycleQueuedTouch(recycleMe); 8199 mLastHandledTouchSequence++; 8200 8201 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 8202 long nextQueued = mTouchEventQueue != null ? 8203 mTouchEventQueue.mSequence : Long.MAX_VALUE; 8204 fromPreQueue = nextPre < nextQueued; 8205 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 8206 } 8207 } 8208 8209 /** 8210 * Add a TouchEventData to the pre-queue. 8211 * 8212 * An event in the pre-queue is an event that we know about that 8213 * has been sent to webkit, but that we haven't received back and 8214 * enqueued into the normal touch queue yet. If webkit ever times 8215 * out and we need to ignore currently missing events, we'll run 8216 * events from the pre-queue to patch the holes. 8217 * 8218 * @param ted TouchEventData to pre-queue 8219 */ 8220 public void preQueueTouchEventData(TouchEventData ted) { 8221 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 8222 if (mPreQueue == null) { 8223 mPreQueue = newTouch; 8224 } else { 8225 QueuedTouch insertionPoint = mPreQueue; 8226 while (insertionPoint.mNext != null && 8227 insertionPoint.mNext.mSequence < newTouch.mSequence) { 8228 insertionPoint = insertionPoint.mNext; 8229 } 8230 newTouch.mNext = insertionPoint.mNext; 8231 insertionPoint.mNext = newTouch; 8232 } 8233 } 8234 8235 private void recycleQueuedTouch(QueuedTouch qd) { 8236 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 8237 qd.mNext = mQueuedTouchRecycleBin; 8238 mQueuedTouchRecycleBin = qd; 8239 mQueuedTouchRecycleCount++; 8240 } 8241 } 8242 8243 /** 8244 * Reset the touch event queue. This will dump any pending events 8245 * and reset the sequence numbering. 8246 */ 8247 public void reset() { 8248 mNextTouchSequence = Long.MIN_VALUE + 1; 8249 mLastHandledTouchSequence = Long.MIN_VALUE; 8250 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 8251 while (mTouchEventQueue != null) { 8252 QueuedTouch recycleMe = mTouchEventQueue; 8253 mTouchEventQueue = mTouchEventQueue.mNext; 8254 recycleQueuedTouch(recycleMe); 8255 } 8256 while (mPreQueue != null) { 8257 QueuedTouch recycleMe = mPreQueue; 8258 mPreQueue = mPreQueue.mNext; 8259 recycleQueuedTouch(recycleMe); 8260 } 8261 } 8262 8263 /** 8264 * Return the next valid sequence number for tagging incoming touch events. 8265 * @return The next touch event sequence number 8266 */ 8267 public long nextTouchSequence() { 8268 return mNextTouchSequence++; 8269 } 8270 8271 /** 8272 * Enqueue a touch event in the form of TouchEventData. 8273 * The sequence number will be read from the mSequence field of the argument. 8274 * 8275 * If the touch event's sequence number is the next in line to be processed, it will 8276 * be handled before this method returns. Any subsequent events that have already 8277 * been queued will also be processed in their proper order. 8278 * 8279 * @param ted Touch data to be processed in order. 8280 * @return true if the event was processed before returning, false if it was just enqueued. 8281 */ 8282 public boolean enqueueTouchEvent(TouchEventData ted) { 8283 // Remove from the pre-queue if present 8284 QueuedTouch preQueue = mPreQueue; 8285 if (preQueue != null) { 8286 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 8287 // if it was present in the pre-queue, and removed from the pre-queue itself. 8288 if (preQueue.mSequence == ted.mSequence) { 8289 mPreQueue = preQueue.mNext; 8290 } else { 8291 QueuedTouch prev = preQueue; 8292 preQueue = null; 8293 while (prev.mNext != null) { 8294 if (prev.mNext.mSequence == ted.mSequence) { 8295 preQueue = prev.mNext; 8296 prev.mNext = preQueue.mNext; 8297 break; 8298 } else { 8299 prev = prev.mNext; 8300 } 8301 } 8302 } 8303 } 8304 8305 if (ted.mSequence < mLastHandledTouchSequence) { 8306 // Stale event and we already moved on; drop it. (Should not be common.) 8307 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 8308 " received from webcore; ignoring"); 8309 return false; 8310 } 8311 8312 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 8313 return false; 8314 } 8315 8316 // dropStaleGestures above might have fast-forwarded us to 8317 // an event we have already. 8318 runNextQueuedEvents(); 8319 8320 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 8321 if (preQueue != null) { 8322 recycleQueuedTouch(preQueue); 8323 preQueue = null; 8324 } 8325 handleQueuedTouchEventData(ted); 8326 8327 mLastHandledTouchSequence++; 8328 8329 // Do we have any more? Run them if so. 8330 runNextQueuedEvents(); 8331 } else { 8332 // Reuse the pre-queued object if we had it. 8333 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 8334 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8335 } 8336 return true; 8337 } 8338 8339 /** 8340 * Enqueue a touch event in the form of a MotionEvent from the framework. 8341 * 8342 * If the touch event's sequence number is the next in line to be processed, it will 8343 * be handled before this method returns. Any subsequent events that have already 8344 * been queued will also be processed in their proper order. 8345 * 8346 * @param ev MotionEvent to be processed in order 8347 */ 8348 public void enqueueTouchEvent(MotionEvent ev) { 8349 final long sequence = nextTouchSequence(); 8350 8351 if (dropStaleGestures(ev, sequence)) { 8352 return; 8353 } 8354 8355 // dropStaleGestures above might have fast-forwarded us to 8356 // an event we have already. 8357 runNextQueuedEvents(); 8358 8359 if (mLastHandledTouchSequence + 1 == sequence) { 8360 handleQueuedMotionEvent(ev); 8361 8362 mLastHandledTouchSequence++; 8363 8364 // Do we have any more? Run them if so. 8365 runNextQueuedEvents(); 8366 } else { 8367 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 8368 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8369 } 8370 } 8371 8372 private void runNextQueuedEvents() { 8373 QueuedTouch qd = mTouchEventQueue; 8374 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8375 handleQueuedTouch(qd); 8376 QueuedTouch recycleMe = qd; 8377 qd = qd.mNext; 8378 recycleQueuedTouch(recycleMe); 8379 mLastHandledTouchSequence++; 8380 } 8381 mTouchEventQueue = qd; 8382 } 8383 8384 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 8385 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 8386 // This is to make sure that we don't attempt to process a tap 8387 // or long press when webkit takes too long to get back to us. 8388 // The movement will be properly confirmed when we process the 8389 // enqueued event later. 8390 final int dx = Math.round(ev.getX()) - mLastTouchX; 8391 final int dy = Math.round(ev.getY()) - mLastTouchY; 8392 if (dx * dx + dy * dy > mTouchSlopSquare) { 8393 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 8394 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 8395 } 8396 } 8397 8398 if (mTouchEventQueue == null) { 8399 return sequence <= mLastHandledTouchSequence; 8400 } 8401 8402 // If we have a new down event and it's been a while since the last event 8403 // we saw, catch up as best we can and keep going. 8404 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 8405 long eventTime = ev.getEventTime(); 8406 long lastHandledEventTime = mLastEventTime; 8407 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 8408 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 8409 "Catching up."); 8410 runQueuedAndPreQueuedEvents(); 8411 8412 // Drop leftovers that we truly don't have. 8413 QueuedTouch qd = mTouchEventQueue; 8414 while (qd != null && qd.mSequence < sequence) { 8415 QueuedTouch recycleMe = qd; 8416 qd = qd.mNext; 8417 recycleQueuedTouch(recycleMe); 8418 } 8419 mTouchEventQueue = qd; 8420 mLastHandledTouchSequence = sequence - 1; 8421 } 8422 } 8423 8424 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 8425 QueuedTouch qd = mTouchEventQueue; 8426 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8427 QueuedTouch recycleMe = qd; 8428 qd = qd.mNext; 8429 recycleQueuedTouch(recycleMe); 8430 } 8431 mTouchEventQueue = qd; 8432 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 8433 } 8434 8435 if (mPreQueue != null) { 8436 // Drop stale prequeued events 8437 QueuedTouch qd = mPreQueue; 8438 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8439 QueuedTouch recycleMe = qd; 8440 qd = qd.mNext; 8441 recycleQueuedTouch(recycleMe); 8442 } 8443 mPreQueue = qd; 8444 } 8445 8446 return sequence <= mLastHandledTouchSequence; 8447 } 8448 8449 private void handleQueuedTouch(QueuedTouch qt) { 8450 if (qt.mTed != null) { 8451 handleQueuedTouchEventData(qt.mTed); 8452 } else { 8453 handleQueuedMotionEvent(qt.mEvent); 8454 qt.mEvent.recycle(); 8455 } 8456 } 8457 8458 private void handleQueuedMotionEvent(MotionEvent ev) { 8459 mLastEventTime = ev.getEventTime(); 8460 int action = ev.getActionMasked(); 8461 if (ev.getPointerCount() > 1) { // Multi-touch 8462 handleMultiTouchInWebView(ev); 8463 } else { 8464 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 8465 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 8466 // ScaleGestureDetector needs a consistent event stream to operate properly. 8467 // It won't take any action with fewer than two pointers, but it needs to 8468 // update internal bookkeeping state. 8469 detector.onTouchEvent(ev); 8470 } 8471 8472 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 8473 } 8474 } 8475 8476 private void handleQueuedTouchEventData(TouchEventData ted) { 8477 if (ted.mMotionEvent != null) { 8478 mLastEventTime = ted.mMotionEvent.getEventTime(); 8479 } 8480 if (!ted.mReprocess) { 8481 if (ted.mAction == MotionEvent.ACTION_DOWN 8482 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 8483 // if prevent default is called from WebCore, UI 8484 // will not handle the rest of the touch events any 8485 // more. 8486 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8487 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 8488 } else if (ted.mAction == MotionEvent.ACTION_MOVE 8489 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 8490 // the return for the first ACTION_MOVE will decide 8491 // whether UI will handle touch or not. Currently no 8492 // support for alternating prevent default 8493 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8494 : PREVENT_DEFAULT_NO; 8495 } 8496 if (mPreventDefault == PREVENT_DEFAULT_YES) { 8497 mTouchHighlightRegion.setEmpty(); 8498 } 8499 } else { 8500 if (ted.mPoints.length > 1) { // multi-touch 8501 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 8502 mPreventDefault = PREVENT_DEFAULT_NO; 8503 handleMultiTouchInWebView(ted.mMotionEvent); 8504 } else { 8505 mPreventDefault = PREVENT_DEFAULT_YES; 8506 } 8507 return; 8508 } 8509 8510 // prevent default is not called in WebCore, so the 8511 // message needs to be reprocessed in UI 8512 if (!ted.mNativeResult) { 8513 // Following is for single touch. 8514 switch (ted.mAction) { 8515 case MotionEvent.ACTION_DOWN: 8516 mLastDeferTouchX = ted.mPointsInView[0].x; 8517 mLastDeferTouchY = ted.mPointsInView[0].y; 8518 mDeferTouchMode = TOUCH_INIT_MODE; 8519 break; 8520 case MotionEvent.ACTION_MOVE: { 8521 // no snapping in defer process 8522 int x = ted.mPointsInView[0].x; 8523 int y = ted.mPointsInView[0].y; 8524 8525 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 8526 mDeferTouchMode = TOUCH_DRAG_MODE; 8527 mLastDeferTouchX = x; 8528 mLastDeferTouchY = y; 8529 startScrollingLayer(x, y); 8530 startDrag(); 8531 } 8532 int deltaX = pinLocX((int) (mScrollX 8533 + mLastDeferTouchX - x)) 8534 - mScrollX; 8535 int deltaY = pinLocY((int) (mScrollY 8536 + mLastDeferTouchY - y)) 8537 - mScrollY; 8538 doDrag(deltaX, deltaY); 8539 if (deltaX != 0) mLastDeferTouchX = x; 8540 if (deltaY != 0) mLastDeferTouchY = y; 8541 break; 8542 } 8543 case MotionEvent.ACTION_UP: 8544 case MotionEvent.ACTION_CANCEL: 8545 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 8546 // no fling in defer process 8547 mScroller.springBack(mScrollX, mScrollY, 0, 8548 computeMaxScrollX(), 0, 8549 computeMaxScrollY()); 8550 invalidate(); 8551 WebViewCore.resumePriority(); 8552 WebViewCore.resumeUpdatePicture(mWebViewCore); 8553 } 8554 mDeferTouchMode = TOUCH_DONE_MODE; 8555 break; 8556 case WebViewCore.ACTION_DOUBLETAP: 8557 // doDoubleTap() needs mLastTouchX/Y as anchor 8558 mLastDeferTouchX = ted.mPointsInView[0].x; 8559 mLastDeferTouchY = ted.mPointsInView[0].y; 8560 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 8561 mDeferTouchMode = TOUCH_DONE_MODE; 8562 break; 8563 case WebViewCore.ACTION_LONGPRESS: 8564 HitTestResult hitTest = getHitTestResult(); 8565 if (hitTest != null && hitTest.mType 8566 != HitTestResult.UNKNOWN_TYPE) { 8567 performLongClick(); 8568 } 8569 mDeferTouchMode = TOUCH_DONE_MODE; 8570 break; 8571 } 8572 } 8573 } 8574 } 8575 } 8576 8577 //------------------------------------------------------------------------- 8578 // Methods can be called from a separate thread, like WebViewCore 8579 // If it needs to call the View system, it has to send message. 8580 //------------------------------------------------------------------------- 8581 8582 /** 8583 * General handler to receive message coming from webkit thread 8584 */ 8585 class PrivateHandler extends Handler { 8586 @Override 8587 public void handleMessage(Message msg) { 8588 // exclude INVAL_RECT_MSG_ID since it is frequently output 8589 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 8590 if (msg.what >= FIRST_PRIVATE_MSG_ID 8591 && msg.what <= LAST_PRIVATE_MSG_ID) { 8592 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 8593 - FIRST_PRIVATE_MSG_ID]); 8594 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 8595 && msg.what <= LAST_PACKAGE_MSG_ID) { 8596 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 8597 - FIRST_PACKAGE_MSG_ID]); 8598 } else { 8599 Log.v(LOGTAG, Integer.toString(msg.what)); 8600 } 8601 } 8602 if (mWebViewCore == null) { 8603 // after WebView's destroy() is called, skip handling messages. 8604 return; 8605 } 8606 if (mBlockWebkitViewMessages 8607 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 8608 // Blocking messages from webkit 8609 return; 8610 } 8611 switch (msg.what) { 8612 case REMEMBER_PASSWORD: { 8613 mDatabase.setUsernamePassword( 8614 msg.getData().getString("host"), 8615 msg.getData().getString("username"), 8616 msg.getData().getString("password")); 8617 ((Message) msg.obj).sendToTarget(); 8618 break; 8619 } 8620 case NEVER_REMEMBER_PASSWORD: { 8621 mDatabase.setUsernamePassword( 8622 msg.getData().getString("host"), null, null); 8623 ((Message) msg.obj).sendToTarget(); 8624 break; 8625 } 8626 case PREVENT_DEFAULT_TIMEOUT: { 8627 // if timeout happens, cancel it so that it won't block UI 8628 // to continue handling touch events 8629 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8630 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8631 || (msg.arg1 == MotionEvent.ACTION_MOVE 8632 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8633 cancelWebCoreTouchEvent( 8634 viewToContentX(mLastTouchX + mScrollX), 8635 viewToContentY(mLastTouchY + mScrollY), 8636 true); 8637 } 8638 break; 8639 } 8640 case SCROLL_SELECT_TEXT: { 8641 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8642 mSentAutoScrollMessage = false; 8643 break; 8644 } 8645 if (mCurrentScrollingLayerId == 0) { 8646 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8647 } else { 8648 scrollLayerTo(mScrollingLayerRect.left + mAutoScrollX, 8649 mScrollingLayerRect.top + mAutoScrollY); 8650 } 8651 sendEmptyMessageDelayed( 8652 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8653 break; 8654 } 8655 case UPDATE_SELECTION: { 8656 if (mTouchMode == TOUCH_INIT_MODE 8657 || mTouchMode == TOUCH_SHORTPRESS_MODE 8658 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 8659 updateSelection(); 8660 } 8661 break; 8662 } 8663 case SWITCH_TO_SHORTPRESS: { 8664 if (mTouchMode == TOUCH_INIT_MODE) { 8665 if (!sDisableNavcache 8666 && mPreventDefault != PREVENT_DEFAULT_YES) { 8667 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8668 updateSelection(); 8669 } else { 8670 // set to TOUCH_SHORTPRESS_MODE so that it won't 8671 // trigger double tap any more 8672 mTouchMode = TOUCH_SHORTPRESS_MODE; 8673 } 8674 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8675 mTouchMode = TOUCH_DONE_MODE; 8676 } 8677 break; 8678 } 8679 case SWITCH_TO_LONGPRESS: { 8680 if (sDisableNavcache) { 8681 removeTouchHighlight(); 8682 } 8683 if (inFullScreenMode() || mDeferTouchProcess) { 8684 TouchEventData ted = new TouchEventData(); 8685 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8686 ted.mIds = new int[1]; 8687 ted.mIds[0] = 0; 8688 ted.mPoints = new Point[1]; 8689 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8690 viewToContentY(mLastTouchY + mScrollY)); 8691 ted.mPointsInView = new Point[1]; 8692 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8693 // metaState for long press is tricky. Should it be the 8694 // state when the press started or when the press was 8695 // released? Or some intermediary key state? For 8696 // simplicity for now, we don't set it. 8697 ted.mMetaState = 0; 8698 ted.mReprocess = mDeferTouchProcess; 8699 ted.mNativeLayer = nativeScrollableLayer( 8700 ted.mPoints[0].x, ted.mPoints[0].y, 8701 ted.mNativeLayerRect, null); 8702 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8703 mTouchEventQueue.preQueueTouchEventData(ted); 8704 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8705 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8706 mTouchMode = TOUCH_DONE_MODE; 8707 performLongClick(); 8708 } 8709 break; 8710 } 8711 case RELEASE_SINGLE_TAP: { 8712 doShortPress(); 8713 break; 8714 } 8715 case SCROLL_TO_MSG_ID: { 8716 // arg1 = animate, arg2 = onlyIfImeIsShowing 8717 // obj = Point(x, y) 8718 if (msg.arg2 == 1) { 8719 // This scroll is intended to bring the textfield into 8720 // view, but is only necessary if the IME is showing 8721 InputMethodManager imm = InputMethodManager.peekInstance(); 8722 if (imm == null || !imm.isAcceptingText() 8723 || (!imm.isActive(WebView.this) && (!inEditingMode() 8724 || !imm.isActive(mWebTextView)))) { 8725 break; 8726 } 8727 } 8728 final Point p = (Point) msg.obj; 8729 if (msg.arg1 == 1) { 8730 spawnContentScrollTo(p.x, p.y); 8731 } else { 8732 setContentScrollTo(p.x, p.y); 8733 } 8734 break; 8735 } 8736 case UPDATE_ZOOM_RANGE: { 8737 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8738 // mScrollX contains the new minPrefWidth 8739 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8740 break; 8741 } 8742 case UPDATE_ZOOM_DENSITY: { 8743 final float density = (Float) msg.obj; 8744 mZoomManager.updateDefaultZoomDensity(density); 8745 break; 8746 } 8747 case REPLACE_BASE_CONTENT: { 8748 nativeReplaceBaseContent(msg.arg1); 8749 break; 8750 } 8751 case NEW_PICTURE_MSG_ID: { 8752 // called for new content 8753 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8754 setNewPicture(draw, true); 8755 break; 8756 } 8757 case WEBCORE_INITIALIZED_MSG_ID: 8758 // nativeCreate sets mNativeClass to a non-zero value 8759 String drawableDir = BrowserFrame.getRawResFilename( 8760 BrowserFrame.DRAWABLEDIR, mContext); 8761 WindowManager windowManager = 8762 (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE); 8763 Display display = windowManager.getDefaultDisplay(); 8764 nativeCreate(msg.arg1, drawableDir, 8765 ActivityManager.isHighEndGfx(display)); 8766 if (mDelaySetPicture != null) { 8767 setNewPicture(mDelaySetPicture, true); 8768 mDelaySetPicture = null; 8769 } 8770 if (mIsPaused) { 8771 nativeSetPauseDrawing(mNativeClass, true); 8772 } 8773 break; 8774 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8775 // Make sure that the textfield is currently focused 8776 // and representing the same node as the pointer. 8777 if (msg.arg2 == mTextGeneration) { 8778 String text = (String) msg.obj; 8779 if (null == text) { 8780 text = ""; 8781 } 8782 if (inEditingMode() && 8783 mWebTextView.isSameTextField(msg.arg1)) { 8784 mWebTextView.setTextAndKeepSelection(text); 8785 } else if (mInputConnection != null && 8786 mFieldPointer == msg.arg1) { 8787 mInputConnection.setTextAndKeepSelection(text); 8788 } 8789 } 8790 break; 8791 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8792 displaySoftKeyboard(true); 8793 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8794 case UPDATE_TEXT_SELECTION_MSG_ID: 8795 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8796 (WebViewCore.TextSelectionData) msg.obj); 8797 break; 8798 case FORM_DID_BLUR: 8799 if (inEditingMode() 8800 && mWebTextView.isSameTextField(msg.arg1)) { 8801 hideSoftKeyboard(); 8802 } 8803 break; 8804 case RETURN_LABEL: 8805 if (inEditingMode() 8806 && mWebTextView.isSameTextField(msg.arg1)) { 8807 mWebTextView.setHint((String) msg.obj); 8808 InputMethodManager imm 8809 = InputMethodManager.peekInstance(); 8810 // The hint is propagated to the IME in 8811 // onCreateInputConnection. If the IME is already 8812 // active, restart it so that its hint text is updated. 8813 if (imm != null && imm.isActive(mWebTextView)) { 8814 imm.restartInput(mWebTextView); 8815 } 8816 } 8817 break; 8818 case UNHANDLED_NAV_KEY: 8819 navHandledKey(msg.arg1, 1, false, 0); 8820 break; 8821 case UPDATE_TEXT_ENTRY_MSG_ID: 8822 // this is sent after finishing resize in WebViewCore. Make 8823 // sure the text edit box is still on the screen. 8824 if (inEditingMode() && nativeCursorIsTextInput()) { 8825 updateWebTextViewPosition(); 8826 } 8827 break; 8828 case CLEAR_TEXT_ENTRY: 8829 clearTextEntry(); 8830 break; 8831 case INVAL_RECT_MSG_ID: { 8832 Rect r = (Rect)msg.obj; 8833 if (r == null) { 8834 invalidate(); 8835 } else { 8836 // we need to scale r from content into view coords, 8837 // which viewInvalidate() does for us 8838 viewInvalidate(r.left, r.top, r.right, r.bottom); 8839 } 8840 break; 8841 } 8842 case REQUEST_FORM_DATA: 8843 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8844 if (mWebTextView.isSameTextField(msg.arg1)) { 8845 mWebTextView.setAdapterCustom(adapter); 8846 } 8847 break; 8848 8849 case LONG_PRESS_CENTER: 8850 // as this is shared by keydown and trackballdown, reset all 8851 // the states 8852 mGotCenterDown = false; 8853 mTrackballDown = false; 8854 performLongClick(); 8855 break; 8856 8857 case WEBCORE_NEED_TOUCH_EVENTS: 8858 mForwardTouchEvents = (msg.arg1 != 0); 8859 break; 8860 8861 case PREVENT_TOUCH_ID: 8862 if (inFullScreenMode()) { 8863 break; 8864 } 8865 TouchEventData ted = (TouchEventData) msg.obj; 8866 8867 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8868 // WebCore is responding to us; remove pending timeout. 8869 // It will be re-posted when needed. 8870 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8871 } 8872 break; 8873 8874 case REQUEST_KEYBOARD: 8875 if (msg.arg1 == 0) { 8876 hideSoftKeyboard(); 8877 } else { 8878 displaySoftKeyboard(false); 8879 } 8880 break; 8881 8882 case FIND_AGAIN: 8883 // Ignore if find has been dismissed. 8884 if (mFindIsUp && mFindCallback != null) { 8885 mFindCallback.findAll(); 8886 } 8887 break; 8888 8889 case DRAG_HELD_MOTIONLESS: 8890 mHeldMotionless = MOTIONLESS_TRUE; 8891 invalidate(); 8892 // fall through to keep scrollbars awake 8893 8894 case AWAKEN_SCROLL_BARS: 8895 if (mTouchMode == TOUCH_DRAG_MODE 8896 && mHeldMotionless == MOTIONLESS_TRUE) { 8897 awakenScrollBars(ViewConfiguration 8898 .getScrollDefaultDelay(), false); 8899 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8900 .obtainMessage(AWAKEN_SCROLL_BARS), 8901 ViewConfiguration.getScrollDefaultDelay()); 8902 } 8903 break; 8904 8905 case DO_MOTION_UP: 8906 doMotionUp(msg.arg1, msg.arg2); 8907 break; 8908 8909 case SCREEN_ON: 8910 setKeepScreenOn(msg.arg1 == 1); 8911 break; 8912 8913 case ENTER_FULLSCREEN_VIDEO: 8914 int layerId = msg.arg1; 8915 8916 String url = (String) msg.obj; 8917 if (mHTML5VideoViewProxy != null) { 8918 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8919 } 8920 break; 8921 8922 case EXIT_FULLSCREEN_VIDEO: 8923 if (mHTML5VideoViewProxy != null) { 8924 mHTML5VideoViewProxy.exitFullScreenVideo(); 8925 } 8926 break; 8927 8928 case SHOW_FULLSCREEN: { 8929 View view = (View) msg.obj; 8930 int orientation = msg.arg1; 8931 int npp = msg.arg2; 8932 8933 if (inFullScreenMode()) { 8934 Log.w(LOGTAG, "Should not have another full screen."); 8935 dismissFullScreenMode(); 8936 } 8937 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 8938 mFullScreenHolder.setContentView(view); 8939 mFullScreenHolder.show(); 8940 invalidate(); 8941 8942 break; 8943 } 8944 case HIDE_FULLSCREEN: 8945 dismissFullScreenMode(); 8946 break; 8947 8948 case DOM_FOCUS_CHANGED: 8949 if (inEditingMode()) { 8950 nativeClearCursor(); 8951 rebuildWebTextView(); 8952 } 8953 break; 8954 8955 case SHOW_RECT_MSG_ID: { 8956 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8957 int x = mScrollX; 8958 int left = contentToViewX(data.mLeft); 8959 int width = contentToViewDimension(data.mWidth); 8960 int maxWidth = contentToViewDimension(data.mContentWidth); 8961 int viewWidth = getViewWidth(); 8962 if (width < viewWidth) { 8963 // center align 8964 x += left + width / 2 - mScrollX - viewWidth / 2; 8965 } else { 8966 x += (int) (left + data.mXPercentInDoc * width 8967 - mScrollX - data.mXPercentInView * viewWidth); 8968 } 8969 if (DebugFlags.WEB_VIEW) { 8970 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8971 width + ",maxWidth=" + maxWidth + 8972 ",viewWidth=" + viewWidth + ",x=" 8973 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8974 ",xPercentInView=" + data.mXPercentInView+ ")"); 8975 } 8976 // use the passing content width to cap x as the current 8977 // mContentWidth may not be updated yet 8978 x = Math.max(0, 8979 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8980 int top = contentToViewY(data.mTop); 8981 int height = contentToViewDimension(data.mHeight); 8982 int maxHeight = contentToViewDimension(data.mContentHeight); 8983 int viewHeight = getViewHeight(); 8984 int y = (int) (top + data.mYPercentInDoc * height - 8985 data.mYPercentInView * viewHeight); 8986 if (DebugFlags.WEB_VIEW) { 8987 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8988 height + ",maxHeight=" + maxHeight + 8989 ",viewHeight=" + viewHeight + ",y=" 8990 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8991 ",yPercentInView=" + data.mYPercentInView+ ")"); 8992 } 8993 // use the passing content height to cap y as the current 8994 // mContentHeight may not be updated yet 8995 y = Math.max(0, 8996 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8997 // We need to take into account the visible title height 8998 // when scrolling since y is an absolute view position. 8999 y = Math.max(0, y - getVisibleTitleHeightImpl()); 9000 scrollTo(x, y); 9001 } 9002 break; 9003 9004 case CENTER_FIT_RECT: 9005 centerFitRect((Rect)msg.obj); 9006 break; 9007 9008 case SET_SCROLLBAR_MODES: 9009 mHorizontalScrollBarMode = msg.arg1; 9010 mVerticalScrollBarMode = msg.arg2; 9011 break; 9012 9013 case SELECTION_STRING_CHANGED: 9014 if (mAccessibilityInjector != null) { 9015 String selectionString = (String) msg.obj; 9016 mAccessibilityInjector.onSelectionStringChange(selectionString); 9017 } 9018 break; 9019 9020 case HIT_TEST_RESULT: 9021 WebKitHitTest hit = (WebKitHitTest) msg.obj; 9022 mFocusedNode = hit; 9023 setTouchHighlightRects(hit); 9024 if (hit == null) { 9025 mInitialHitTestResult = null; 9026 } else { 9027 mInitialHitTestResult = new HitTestResult(); 9028 if (hit.mLinkUrl != null) { 9029 mInitialHitTestResult.mType = HitTestResult.SRC_ANCHOR_TYPE; 9030 mInitialHitTestResult.mExtra = hit.mLinkUrl; 9031 if (hit.mImageUrl != null) { 9032 mInitialHitTestResult.mType = HitTestResult.SRC_IMAGE_ANCHOR_TYPE; 9033 mInitialHitTestResult.mExtra = hit.mImageUrl; 9034 } 9035 } else if (hit.mImageUrl != null) { 9036 mInitialHitTestResult.mType = HitTestResult.IMAGE_TYPE; 9037 mInitialHitTestResult.mExtra = hit.mImageUrl; 9038 } else if (hit.mEditable) { 9039 mInitialHitTestResult.mType = HitTestResult.EDIT_TEXT_TYPE; 9040 } 9041 } 9042 break; 9043 9044 case SAVE_WEBARCHIVE_FINISHED: 9045 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 9046 if (saveMessage.mCallback != null) { 9047 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 9048 } 9049 break; 9050 9051 case SET_AUTOFILLABLE: 9052 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 9053 if (mWebTextView != null) { 9054 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 9055 rebuildWebTextView(); 9056 } 9057 break; 9058 9059 case AUTOFILL_COMPLETE: 9060 if (mWebTextView != null) { 9061 // Clear the WebTextView adapter when AutoFill finishes 9062 // so that the drop down gets cleared. 9063 mWebTextView.setAdapterCustom(null); 9064 } 9065 break; 9066 9067 case SELECT_AT: 9068 nativeSelectAt(msg.arg1, msg.arg2); 9069 break; 9070 9071 case COPY_TO_CLIPBOARD: 9072 copyToClipboard((String) msg.obj); 9073 break; 9074 9075 case INIT_EDIT_FIELD: 9076 if (mInputConnection != null) { 9077 mTextGeneration = 0; 9078 mFieldPointer = msg.arg1; 9079 mInputConnection.setTextAndKeepSelection((String) msg.obj); 9080 } 9081 break; 9082 9083 case REPLACE_TEXT:{ 9084 String text = (String)msg.obj; 9085 int start = msg.arg1; 9086 int end = msg.arg2; 9087 int cursorPosition = start + text.length(); 9088 replaceTextfieldText(start, end, text, 9089 cursorPosition, cursorPosition); 9090 break; 9091 } 9092 9093 default: 9094 super.handleMessage(msg); 9095 break; 9096 } 9097 } 9098 } 9099 9100 private void setTouchHighlightRects(WebKitHitTest hit) { 9101 Rect[] rects = hit != null ? hit.mTouchRects : null; 9102 if (!mTouchHighlightRegion.isEmpty()) { 9103 invalidate(mTouchHighlightRegion.getBounds()); 9104 mTouchHighlightRegion.setEmpty(); 9105 } 9106 if (rects != null) { 9107 mTouchHightlightPaint.setColor(hit.mTapHighlightColor); 9108 for (Rect rect : rects) { 9109 Rect viewRect = contentToViewRect(rect); 9110 // some sites, like stories in nytimes.com, set 9111 // mouse event handler in the top div. It is not 9112 // user friendly to highlight the div if it covers 9113 // more than half of the screen. 9114 if (viewRect.width() < getWidth() >> 1 9115 || viewRect.height() < getHeight() >> 1) { 9116 mTouchHighlightRegion.union(viewRect); 9117 } else { 9118 Log.w(LOGTAG, "Skip the huge selection rect:" 9119 + viewRect); 9120 } 9121 } 9122 invalidate(mTouchHighlightRegion.getBounds()); 9123 } 9124 } 9125 9126 /** @hide Called by JNI when pages are swapped (only occurs with hardware 9127 * acceleration) */ 9128 protected void pageSwapCallback(boolean notifyAnimationStarted) { 9129 mWebViewCore.resumeWebKitDraw(); 9130 if (inEditingMode()) { 9131 didUpdateWebTextViewDimensions(ANYWHERE); 9132 } 9133 if (notifyAnimationStarted) { 9134 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 9135 } 9136 } 9137 9138 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 9139 if (mNativeClass == 0) { 9140 if (mDelaySetPicture != null) { 9141 throw new IllegalStateException("Tried to setNewPicture with" 9142 + " a delay picture already set! (memory leak)"); 9143 } 9144 // Not initialized yet, delay set 9145 mDelaySetPicture = draw; 9146 return; 9147 } 9148 WebViewCore.ViewState viewState = draw.mViewState; 9149 boolean isPictureAfterFirstLayout = viewState != null; 9150 9151 if (updateBaseLayer) { 9152 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 9153 getSettings().getShowVisualIndicator(), 9154 isPictureAfterFirstLayout); 9155 } 9156 final Point viewSize = draw.mViewSize; 9157 // We update the layout (i.e. request a layout from the 9158 // view system) if the last view size that we sent to 9159 // WebCore matches the view size of the picture we just 9160 // received in the fixed dimension. 9161 final boolean updateLayout = viewSize.x == mLastWidthSent 9162 && viewSize.y == mLastHeightSent; 9163 // Don't send scroll event for picture coming from webkit, 9164 // since the new picture may cause a scroll event to override 9165 // the saved history scroll position. 9166 mSendScrollEvent = false; 9167 recordNewContentSize(draw.mContentSize.x, 9168 draw.mContentSize.y, updateLayout); 9169 if (isPictureAfterFirstLayout) { 9170 // Reset the last sent data here since dealing with new page. 9171 mLastWidthSent = 0; 9172 mZoomManager.onFirstLayout(draw); 9173 int scrollX = viewState.mShouldStartScrolledRight 9174 ? getContentWidth() : viewState.mScrollX; 9175 int scrollY = viewState.mScrollY; 9176 setContentScrollTo(scrollX, scrollY); 9177 if (!mDrawHistory) { 9178 // As we are on a new page, remove the WebTextView. This 9179 // is necessary for page loads driven by webkit, and in 9180 // particular when the user was on a password field, so 9181 // the WebTextView was visible. 9182 clearTextEntry(); 9183 } 9184 } 9185 mSendScrollEvent = true; 9186 9187 if (DebugFlags.WEB_VIEW) { 9188 Rect b = draw.mInvalRegion.getBounds(); 9189 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 9190 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 9191 } 9192 invalidateContentRect(draw.mInvalRegion.getBounds()); 9193 9194 if (mPictureListener != null) { 9195 mPictureListener.onNewPicture(WebView.this, capturePicture()); 9196 } 9197 9198 // update the zoom information based on the new picture 9199 mZoomManager.onNewPicture(draw); 9200 9201 if (draw.mFocusSizeChanged && inEditingMode()) { 9202 mFocusSizeChanged = true; 9203 } 9204 if (isPictureAfterFirstLayout) { 9205 mViewManager.postReadyToDrawAll(); 9206 } 9207 } 9208 9209 /** 9210 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 9211 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 9212 */ 9213 private void updateTextSelectionFromMessage(int nodePointer, 9214 int textGeneration, WebViewCore.TextSelectionData data) { 9215 if (textGeneration == mTextGeneration) { 9216 if (inEditingMode() 9217 && mWebTextView.isSameTextField(nodePointer)) { 9218 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 9219 } else if (mInputConnection != null && mFieldPointer == nodePointer) { 9220 mInputConnection.setSelection(data.mStart, data.mEnd); 9221 } 9222 } 9223 9224 nativeSetTextSelection(mNativeClass, data.mSelectTextPtr); 9225 if (data.mSelectTextPtr != 0) { 9226 if (!mSelectingText) { 9227 setupWebkitSelect(); 9228 } else if (!mSelectionStarted) { 9229 syncSelectionCursors(); 9230 } 9231 } else { 9232 selectionDone(); 9233 } 9234 invalidate(); 9235 } 9236 9237 // Class used to use a dropdown for a <select> element 9238 private class InvokeListBox implements Runnable { 9239 // Whether the listbox allows multiple selection. 9240 private boolean mMultiple; 9241 // Passed in to a list with multiple selection to tell 9242 // which items are selected. 9243 private int[] mSelectedArray; 9244 // Passed in to a list with single selection to tell 9245 // where the initial selection is. 9246 private int mSelection; 9247 9248 private Container[] mContainers; 9249 9250 // Need these to provide stable ids to my ArrayAdapter, 9251 // which normally does not have stable ids. (Bug 1250098) 9252 private class Container extends Object { 9253 /** 9254 * Possible values for mEnabled. Keep in sync with OptionStatus in 9255 * WebViewCore.cpp 9256 */ 9257 final static int OPTGROUP = -1; 9258 final static int OPTION_DISABLED = 0; 9259 final static int OPTION_ENABLED = 1; 9260 9261 String mString; 9262 int mEnabled; 9263 int mId; 9264 9265 @Override 9266 public String toString() { 9267 return mString; 9268 } 9269 } 9270 9271 /** 9272 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 9273 * and allow filtering. 9274 */ 9275 private class MyArrayListAdapter extends ArrayAdapter<Container> { 9276 public MyArrayListAdapter() { 9277 super(mContext, 9278 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 9279 com.android.internal.R.layout.webview_select_singlechoice, 9280 mContainers); 9281 } 9282 9283 @Override 9284 public View getView(int position, View convertView, 9285 ViewGroup parent) { 9286 // Always pass in null so that we will get a new CheckedTextView 9287 // Otherwise, an item which was previously used as an <optgroup> 9288 // element (i.e. has no check), could get used as an <option> 9289 // element, which needs a checkbox/radio, but it would not have 9290 // one. 9291 convertView = super.getView(position, null, parent); 9292 Container c = item(position); 9293 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 9294 // ListView does not draw dividers between disabled and 9295 // enabled elements. Use a LinearLayout to provide dividers 9296 LinearLayout layout = new LinearLayout(mContext); 9297 layout.setOrientation(LinearLayout.VERTICAL); 9298 if (position > 0) { 9299 View dividerTop = new View(mContext); 9300 dividerTop.setBackgroundResource( 9301 android.R.drawable.divider_horizontal_bright); 9302 layout.addView(dividerTop); 9303 } 9304 9305 if (Container.OPTGROUP == c.mEnabled) { 9306 // Currently select_dialog_multichoice uses CheckedTextViews. 9307 // If that changes, the class cast will no longer be valid. 9308 if (mMultiple) { 9309 Assert.assertTrue(convertView instanceof CheckedTextView); 9310 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 9311 } 9312 } else { 9313 // c.mEnabled == Container.OPTION_DISABLED 9314 // Draw the disabled element in a disabled state. 9315 convertView.setEnabled(false); 9316 } 9317 9318 layout.addView(convertView); 9319 if (position < getCount() - 1) { 9320 View dividerBottom = new View(mContext); 9321 dividerBottom.setBackgroundResource( 9322 android.R.drawable.divider_horizontal_bright); 9323 layout.addView(dividerBottom); 9324 } 9325 return layout; 9326 } 9327 return convertView; 9328 } 9329 9330 @Override 9331 public boolean hasStableIds() { 9332 // AdapterView's onChanged method uses this to determine whether 9333 // to restore the old state. Return false so that the old (out 9334 // of date) state does not replace the new, valid state. 9335 return false; 9336 } 9337 9338 private Container item(int position) { 9339 if (position < 0 || position >= getCount()) { 9340 return null; 9341 } 9342 return getItem(position); 9343 } 9344 9345 @Override 9346 public long getItemId(int position) { 9347 Container item = item(position); 9348 if (item == null) { 9349 return -1; 9350 } 9351 return item.mId; 9352 } 9353 9354 @Override 9355 public boolean areAllItemsEnabled() { 9356 return false; 9357 } 9358 9359 @Override 9360 public boolean isEnabled(int position) { 9361 Container item = item(position); 9362 if (item == null) { 9363 return false; 9364 } 9365 return Container.OPTION_ENABLED == item.mEnabled; 9366 } 9367 } 9368 9369 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 9370 mMultiple = true; 9371 mSelectedArray = selected; 9372 9373 int length = array.length; 9374 mContainers = new Container[length]; 9375 for (int i = 0; i < length; i++) { 9376 mContainers[i] = new Container(); 9377 mContainers[i].mString = array[i]; 9378 mContainers[i].mEnabled = enabled[i]; 9379 mContainers[i].mId = i; 9380 } 9381 } 9382 9383 private InvokeListBox(String[] array, int[] enabled, int selection) { 9384 mSelection = selection; 9385 mMultiple = false; 9386 9387 int length = array.length; 9388 mContainers = new Container[length]; 9389 for (int i = 0; i < length; i++) { 9390 mContainers[i] = new Container(); 9391 mContainers[i].mString = array[i]; 9392 mContainers[i].mEnabled = enabled[i]; 9393 mContainers[i].mId = i; 9394 } 9395 } 9396 9397 /* 9398 * Whenever the data set changes due to filtering, this class ensures 9399 * that the checked item remains checked. 9400 */ 9401 private class SingleDataSetObserver extends DataSetObserver { 9402 private long mCheckedId; 9403 private ListView mListView; 9404 private Adapter mAdapter; 9405 9406 /* 9407 * Create a new observer. 9408 * @param id The ID of the item to keep checked. 9409 * @param l ListView for getting and clearing the checked states 9410 * @param a Adapter for getting the IDs 9411 */ 9412 public SingleDataSetObserver(long id, ListView l, Adapter a) { 9413 mCheckedId = id; 9414 mListView = l; 9415 mAdapter = a; 9416 } 9417 9418 @Override 9419 public void onChanged() { 9420 // The filter may have changed which item is checked. Find the 9421 // item that the ListView thinks is checked. 9422 int position = mListView.getCheckedItemPosition(); 9423 long id = mAdapter.getItemId(position); 9424 if (mCheckedId != id) { 9425 // Clear the ListView's idea of the checked item, since 9426 // it is incorrect 9427 mListView.clearChoices(); 9428 // Search for mCheckedId. If it is in the filtered list, 9429 // mark it as checked 9430 int count = mAdapter.getCount(); 9431 for (int i = 0; i < count; i++) { 9432 if (mAdapter.getItemId(i) == mCheckedId) { 9433 mListView.setItemChecked(i, true); 9434 break; 9435 } 9436 } 9437 } 9438 } 9439 } 9440 9441 @Override 9442 public void run() { 9443 final ListView listView = (ListView) LayoutInflater.from(mContext) 9444 .inflate(com.android.internal.R.layout.select_dialog, null); 9445 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 9446 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 9447 .setView(listView).setCancelable(true) 9448 .setInverseBackgroundForced(true); 9449 9450 if (mMultiple) { 9451 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 9452 @Override 9453 public void onClick(DialogInterface dialog, int which) { 9454 mWebViewCore.sendMessage( 9455 EventHub.LISTBOX_CHOICES, 9456 adapter.getCount(), 0, 9457 listView.getCheckedItemPositions()); 9458 }}); 9459 b.setNegativeButton(android.R.string.cancel, 9460 new DialogInterface.OnClickListener() { 9461 @Override 9462 public void onClick(DialogInterface dialog, int which) { 9463 mWebViewCore.sendMessage( 9464 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9465 }}); 9466 } 9467 mListBoxDialog = b.create(); 9468 listView.setAdapter(adapter); 9469 listView.setFocusableInTouchMode(true); 9470 // There is a bug (1250103) where the checks in a ListView with 9471 // multiple items selected are associated with the positions, not 9472 // the ids, so the items do not properly retain their checks when 9473 // filtered. Do not allow filtering on multiple lists until 9474 // that bug is fixed. 9475 9476 listView.setTextFilterEnabled(!mMultiple); 9477 if (mMultiple) { 9478 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 9479 int length = mSelectedArray.length; 9480 for (int i = 0; i < length; i++) { 9481 listView.setItemChecked(mSelectedArray[i], true); 9482 } 9483 } else { 9484 listView.setOnItemClickListener(new OnItemClickListener() { 9485 @Override 9486 public void onItemClick(AdapterView<?> parent, View v, 9487 int position, long id) { 9488 // Rather than sending the message right away, send it 9489 // after the page regains focus. 9490 mListBoxMessage = Message.obtain(null, 9491 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 9492 mListBoxDialog.dismiss(); 9493 mListBoxDialog = null; 9494 } 9495 }); 9496 if (mSelection != -1) { 9497 listView.setSelection(mSelection); 9498 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 9499 listView.setItemChecked(mSelection, true); 9500 DataSetObserver observer = new SingleDataSetObserver( 9501 adapter.getItemId(mSelection), listView, adapter); 9502 adapter.registerDataSetObserver(observer); 9503 } 9504 } 9505 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 9506 @Override 9507 public void onCancel(DialogInterface dialog) { 9508 mWebViewCore.sendMessage( 9509 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9510 mListBoxDialog = null; 9511 } 9512 }); 9513 mListBoxDialog.show(); 9514 } 9515 } 9516 9517 private Message mListBoxMessage; 9518 9519 /* 9520 * Request a dropdown menu for a listbox with multiple selection. 9521 * 9522 * @param array Labels for the listbox. 9523 * @param enabledArray State for each element in the list. See static 9524 * integers in Container class. 9525 * @param selectedArray Which positions are initally selected. 9526 */ 9527 void requestListBox(String[] array, int[] enabledArray, int[] 9528 selectedArray) { 9529 mPrivateHandler.post( 9530 new InvokeListBox(array, enabledArray, selectedArray)); 9531 } 9532 9533 /* 9534 * Request a dropdown menu for a listbox with single selection or a single 9535 * <select> element. 9536 * 9537 * @param array Labels for the listbox. 9538 * @param enabledArray State for each element in the list. See static 9539 * integers in Container class. 9540 * @param selection Which position is initally selected. 9541 */ 9542 void requestListBox(String[] array, int[] enabledArray, int selection) { 9543 mPrivateHandler.post( 9544 new InvokeListBox(array, enabledArray, selection)); 9545 } 9546 9547 // called by JNI 9548 private void sendMoveFocus(int frame, int node) { 9549 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 9550 new WebViewCore.CursorData(frame, node, 0, 0)); 9551 } 9552 9553 // called by JNI 9554 private void sendMoveMouse(int frame, int node, int x, int y) { 9555 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 9556 new WebViewCore.CursorData(frame, node, x, y)); 9557 } 9558 9559 /* 9560 * Send a mouse move event to the webcore thread. 9561 * 9562 * @param removeFocus Pass true to remove the WebTextView, if present. 9563 * @param stopPaintingCaret Stop drawing the blinking caret if true. 9564 * called by JNI 9565 */ 9566 @SuppressWarnings("unused") 9567 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 9568 if (removeFocus) { 9569 clearTextEntry(); 9570 } 9571 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 9572 stopPaintingCaret ? 1 : 0, 0, 9573 cursorData()); 9574 } 9575 9576 /** 9577 * Called by JNI to send a message to the webcore thread that the user 9578 * touched the webpage. 9579 * @param touchGeneration Generation number of the touch, to ignore touches 9580 * after a new one has been generated. 9581 * @param frame Pointer to the frame holding the node that was touched. 9582 * @param node Pointer to the node touched. 9583 * @param x x-position of the touch. 9584 * @param y y-position of the touch. 9585 */ 9586 private void sendMotionUp(int touchGeneration, 9587 int frame, int node, int x, int y) { 9588 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 9589 touchUpData.mMoveGeneration = touchGeneration; 9590 touchUpData.mFrame = frame; 9591 touchUpData.mNode = node; 9592 touchUpData.mX = x; 9593 touchUpData.mY = y; 9594 touchUpData.mNativeLayer = nativeScrollableLayer( 9595 x, y, touchUpData.mNativeLayerRect, null); 9596 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 9597 } 9598 9599 9600 private int getScaledMaxXScroll() { 9601 int width; 9602 if (mHeightCanMeasure == false) { 9603 width = getViewWidth() / 4; 9604 } else { 9605 Rect visRect = new Rect(); 9606 calcOurVisibleRect(visRect); 9607 width = visRect.width() / 2; 9608 } 9609 // FIXME the divisor should be retrieved from somewhere 9610 return viewToContentX(width); 9611 } 9612 9613 private int getScaledMaxYScroll() { 9614 int height; 9615 if (mHeightCanMeasure == false) { 9616 height = getViewHeight() / 4; 9617 } else { 9618 Rect visRect = new Rect(); 9619 calcOurVisibleRect(visRect); 9620 height = visRect.height() / 2; 9621 } 9622 // FIXME the divisor should be retrieved from somewhere 9623 // the closest thing today is hard-coded into ScrollView.java 9624 // (from ScrollView.java, line 363) int maxJump = height/2; 9625 return Math.round(height * mZoomManager.getInvScale()); 9626 } 9627 9628 /** 9629 * Called by JNI to invalidate view 9630 */ 9631 private void viewInvalidate() { 9632 invalidate(); 9633 } 9634 9635 /** 9636 * Pass the key directly to the page. This assumes that 9637 * nativePageShouldHandleShiftAndArrows() returned true. 9638 */ 9639 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 9640 int keyEventAction; 9641 int eventHubAction; 9642 if (down) { 9643 keyEventAction = KeyEvent.ACTION_DOWN; 9644 eventHubAction = EventHub.KEY_DOWN; 9645 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 9646 } else { 9647 keyEventAction = KeyEvent.ACTION_UP; 9648 eventHubAction = EventHub.KEY_UP; 9649 } 9650 9651 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 9652 1, (metaState & KeyEvent.META_SHIFT_ON) 9653 | (metaState & KeyEvent.META_ALT_ON) 9654 | (metaState & KeyEvent.META_SYM_ON) 9655 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 9656 mWebViewCore.sendMessage(eventHubAction, event); 9657 } 9658 9659 // return true if the key was handled 9660 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 9661 long time) { 9662 if (mNativeClass == 0) { 9663 return false; 9664 } 9665 mInitialHitTestResult = null; 9666 mLastCursorTime = time; 9667 mLastCursorBounds = nativeGetCursorRingBounds(); 9668 boolean keyHandled 9669 = nativeMoveCursor(keyCode, count, noScroll) == false; 9670 if (DebugFlags.WEB_VIEW) { 9671 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 9672 + " mLastCursorTime=" + mLastCursorTime 9673 + " handled=" + keyHandled); 9674 } 9675 if (keyHandled == false) { 9676 return keyHandled; 9677 } 9678 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 9679 if (contentCursorRingBounds.isEmpty()) return keyHandled; 9680 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 9681 // set last touch so that context menu related functions will work 9682 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 9683 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 9684 if (mHeightCanMeasure == false) { 9685 return keyHandled; 9686 } 9687 Rect visRect = new Rect(); 9688 calcOurVisibleRect(visRect); 9689 Rect outset = new Rect(visRect); 9690 int maxXScroll = visRect.width() / 2; 9691 int maxYScroll = visRect.height() / 2; 9692 outset.inset(-maxXScroll, -maxYScroll); 9693 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 9694 return keyHandled; 9695 } 9696 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 9697 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 9698 maxXScroll); 9699 if (maxH > 0) { 9700 pinScrollBy(maxH, 0, true, 0); 9701 } else { 9702 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 9703 -maxXScroll); 9704 if (maxH < 0) { 9705 pinScrollBy(maxH, 0, true, 0); 9706 } 9707 } 9708 if (mLastCursorBounds.isEmpty()) return keyHandled; 9709 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 9710 return keyHandled; 9711 } 9712 if (DebugFlags.WEB_VIEW) { 9713 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 9714 + contentCursorRingBounds); 9715 } 9716 requestRectangleOnScreen(viewCursorRingBounds); 9717 return keyHandled; 9718 } 9719 9720 /** 9721 * @return Whether accessibility script has been injected. 9722 */ 9723 private boolean accessibilityScriptInjected() { 9724 // TODO: Maybe the injected script should announce its presence in 9725 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 9726 // will check that as one of the conditions it looks for 9727 return mAccessibilityScriptInjected; 9728 } 9729 9730 /** 9731 * Set the background color. It's white by default. Pass 9732 * zero to make the view transparent. 9733 * @param color the ARGB color described by Color.java 9734 */ 9735 @Override 9736 public void setBackgroundColor(int color) { 9737 mBackgroundColor = color; 9738 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 9739 } 9740 9741 /** 9742 * @deprecated This method is now obsolete. 9743 */ 9744 @Deprecated 9745 public void debugDump() { 9746 checkThread(); 9747 nativeDebugDump(); 9748 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 9749 } 9750 9751 /** 9752 * Draw the HTML page into the specified canvas. This call ignores any 9753 * view-specific zoom, scroll offset, or other changes. It does not draw 9754 * any view-specific chrome, such as progress or URL bars. 9755 * 9756 * @hide only needs to be accessible to Browser and testing 9757 */ 9758 public void drawPage(Canvas canvas) { 9759 calcOurContentVisibleRectF(mVisibleContentRect); 9760 nativeDraw(canvas, mVisibleContentRect, 0, 0, false); 9761 } 9762 9763 /** 9764 * Enable the communication b/t the webView and VideoViewProxy 9765 * 9766 * @hide only used by the Browser 9767 */ 9768 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 9769 mHTML5VideoViewProxy = proxy; 9770 } 9771 9772 /** 9773 * Set the time to wait between passing touches to WebCore. See also the 9774 * TOUCH_SENT_INTERVAL member for further discussion. 9775 * 9776 * @hide This is only used by the DRT test application. 9777 */ 9778 public void setTouchInterval(int interval) { 9779 mCurrentTouchInterval = interval; 9780 } 9781 9782 /** 9783 * Copy text into the clipboard. This is called indirectly from 9784 * WebViewCore. 9785 * @param text The text to put into the clipboard. 9786 */ 9787 private void copyToClipboard(String text) { 9788 ClipboardManager cm = (ClipboardManager)getContext() 9789 .getSystemService(Context.CLIPBOARD_SERVICE); 9790 ClipData clip = ClipData.newPlainText(getTitle(), text); 9791 cm.setPrimaryClip(clip); 9792 } 9793 9794 /** 9795 * Update our cache with updatedText. 9796 * @param updatedText The new text to put in our cache. 9797 * @hide 9798 */ 9799 protected void updateCachedTextfield(String updatedText) { 9800 // Also place our generation number so that when we look at the cache 9801 // we recognize that it is up to date. 9802 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 9803 } 9804 9805 /*package*/ void autoFillForm(int autoFillQueryId) { 9806 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 9807 } 9808 9809 /* package */ ViewManager getViewManager() { 9810 return mViewManager; 9811 } 9812 9813 private static void checkThread() { 9814 if (Looper.myLooper() != Looper.getMainLooper()) { 9815 Throwable throwable = new Throwable( 9816 "Warning: A WebView method was called on thread '" + 9817 Thread.currentThread().getName() + "'. " + 9818 "All WebView methods must be called on the UI thread. " + 9819 "Future versions of WebView may not support use on other threads."); 9820 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 9821 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 9822 } 9823 } 9824 9825 /** @hide send content invalidate */ 9826 protected void contentInvalidateAll() { 9827 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 9828 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 9829 } 9830 } 9831 9832 /** @hide discard all textures from tiles */ 9833 protected void discardAllTextures() { 9834 nativeDiscardAllTextures(); 9835 } 9836 9837 /** 9838 * Begin collecting per-tile profiling data 9839 * 9840 * @hide only used by profiling tests 9841 */ 9842 public void tileProfilingStart() { 9843 nativeTileProfilingStart(); 9844 } 9845 /** 9846 * Return per-tile profiling data 9847 * 9848 * @hide only used by profiling tests 9849 */ 9850 public float tileProfilingStop() { 9851 return nativeTileProfilingStop(); 9852 } 9853 9854 /** @hide only used by profiling tests */ 9855 public void tileProfilingClear() { 9856 nativeTileProfilingClear(); 9857 } 9858 /** @hide only used by profiling tests */ 9859 public int tileProfilingNumFrames() { 9860 return nativeTileProfilingNumFrames(); 9861 } 9862 /** @hide only used by profiling tests */ 9863 public int tileProfilingNumTilesInFrame(int frame) { 9864 return nativeTileProfilingNumTilesInFrame(frame); 9865 } 9866 /** @hide only used by profiling tests */ 9867 public int tileProfilingGetInt(int frame, int tile, String key) { 9868 return nativeTileProfilingGetInt(frame, tile, key); 9869 } 9870 /** @hide only used by profiling tests */ 9871 public float tileProfilingGetFloat(int frame, int tile, String key) { 9872 return nativeTileProfilingGetFloat(frame, tile, key); 9873 } 9874 9875 /** 9876 * Checks the focused content for an editable text field. This can be 9877 * text input or ContentEditable. 9878 * @return true if the focused item is an editable text field. 9879 */ 9880 boolean focusCandidateIsEditableText() { 9881 boolean isEditable = false; 9882 // TODO: reverse sDisableNavcache so that its name is positive 9883 boolean isNavcacheEnabled = !sDisableNavcache; 9884 if (isNavcacheEnabled) { 9885 isEditable = nativeFocusCandidateIsEditableText(mNativeClass); 9886 } else if (mFocusedNode != null) { 9887 isEditable = mFocusedNode.mEditable; 9888 } 9889 return isEditable; 9890 } 9891 9892 private native int nativeCacheHitFramePointer(); 9893 private native boolean nativeCacheHitIsPlugin(); 9894 private native Rect nativeCacheHitNodeBounds(); 9895 private native int nativeCacheHitNodePointer(); 9896 /* package */ native void nativeClearCursor(); 9897 private native void nativeCreate(int ptr, String drawableDir, boolean isHighEndGfx); 9898 private native int nativeCursorFramePointer(); 9899 private native Rect nativeCursorNodeBounds(); 9900 private native int nativeCursorNodePointer(); 9901 private native boolean nativeCursorIntersects(Rect visibleRect); 9902 private native boolean nativeCursorIsAnchor(); 9903 private native boolean nativeCursorIsTextInput(); 9904 private native Point nativeCursorPosition(); 9905 private native String nativeCursorText(); 9906 /** 9907 * Returns true if the native cursor node says it wants to handle key events 9908 * (ala plugins). This can only be called if mNativeClass is non-zero! 9909 */ 9910 private native boolean nativeCursorWantsKeyEvents(); 9911 private native void nativeDebugDump(); 9912 private native void nativeDestroy(); 9913 9914 /** 9915 * Draw the picture set with a background color and extra. If 9916 * "splitIfNeeded" is true and the return value is not 0, the return value 9917 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 9918 * native allocation can be freed. 9919 */ 9920 private native int nativeDraw(Canvas canvas, RectF visibleRect, 9921 int color, int extra, boolean splitIfNeeded); 9922 private native void nativeDumpDisplayTree(String urlOrNull); 9923 private native boolean nativeEvaluateLayersAnimations(int nativeInstance); 9924 private native int nativeGetDrawGLFunction(int nativeInstance, Rect rect, 9925 Rect viewRect, RectF visibleRect, float scale, int extras); 9926 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect, 9927 RectF visibleRect, float scale); 9928 private native void nativeExtendSelection(int x, int y); 9929 private native int nativeFindAll(String findLower, String findUpper, 9930 boolean sameAsLastSearch); 9931 private native void nativeFindNext(boolean forward); 9932 /* package */ native int nativeFocusCandidateFramePointer(); 9933 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 9934 /* package */ native boolean nativeFocusCandidateIsPassword(); 9935 private native boolean nativeFocusCandidateIsRtlText(); 9936 private native boolean nativeFocusCandidateIsTextInput(); 9937 private native boolean nativeFocusCandidateIsEditableText(int nativeClass); 9938 /* package */ native int nativeFocusCandidateMaxLength(); 9939 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 9940 /* package */ native boolean nativeFocusCandidateIsSpellcheck(); 9941 /* package */ native String nativeFocusCandidateName(); 9942 private native Rect nativeFocusCandidateNodeBounds(); 9943 /** 9944 * @return A Rect with left, top, right, bottom set to the corresponding 9945 * padding values in the focus candidate, if it is a textfield/textarea with 9946 * a style. Otherwise return null. This is not actually a rectangle; Rect 9947 * is being used to pass four integers. 9948 */ 9949 private native Rect nativeFocusCandidatePaddingRect(); 9950 /* package */ native int nativeFocusCandidatePointer(); 9951 private native String nativeFocusCandidateText(); 9952 /* package */ native float nativeFocusCandidateTextSize(); 9953 /* package */ native int nativeFocusCandidateLineHeight(); 9954 /** 9955 * Returns an integer corresponding to WebView.cpp::type. 9956 * See WebTextView.setType() 9957 */ 9958 private native int nativeFocusCandidateType(); 9959 private native int nativeFocusCandidateLayerId(); 9960 private native boolean nativeFocusIsPlugin(); 9961 private native Rect nativeFocusNodeBounds(); 9962 /* package */ native int nativeFocusNodePointer(); 9963 private native Rect nativeGetCursorRingBounds(); 9964 private native String nativeGetSelection(); 9965 private native boolean nativeHasCursorNode(); 9966 private native boolean nativeHasFocusNode(); 9967 private native void nativeHideCursor(); 9968 private native boolean nativeHitSelection(int x, int y); 9969 private native String nativeImageURI(int x, int y); 9970 private native Rect nativeLayerBounds(int layer); 9971 /* package */ native boolean nativeMoveCursorToNextTextInput(); 9972 // return true if the page has been scrolled 9973 private native boolean nativeMotionUp(int x, int y, int slop); 9974 // returns false if it handled the key 9975 private native boolean nativeMoveCursor(int keyCode, int count, 9976 boolean noScroll); 9977 private native int nativeMoveGeneration(); 9978 /** 9979 * @return true if the page should get the shift and arrow keys, rather 9980 * than select text/navigation. 9981 * 9982 * If the focus is a plugin, or if the focus and cursor match and are 9983 * a contentEditable element, then the page should handle these keys. 9984 */ 9985 private native boolean nativePageShouldHandleShiftAndArrows(); 9986 private native boolean nativePointInNavCache(int x, int y, int slop); 9987 private native void nativeSelectBestAt(Rect rect); 9988 private native void nativeSelectAt(int x, int y); 9989 private native int nativeFindIndex(); 9990 private native void nativeSetExtendSelection(); 9991 private native void nativeSetFindIsEmpty(); 9992 private native void nativeSetFindIsUp(boolean isUp); 9993 private native void nativeSetHeightCanMeasure(boolean measure); 9994 private native boolean nativeSetBaseLayer(int nativeInstance, 9995 int layer, Region invalRegion, 9996 boolean showVisualIndicator, boolean isPictureAfterFirstLayout); 9997 private native int nativeGetBaseLayer(); 9998 private native void nativeShowCursorTimed(); 9999 private native void nativeReplaceBaseContent(int content); 10000 private native void nativeCopyBaseContentToPicture(Picture pict); 10001 private native boolean nativeHasContent(); 10002 private native void nativeSetSelectionPointer(int nativeInstance, 10003 boolean set, float scale, int x, int y); 10004 private native boolean nativeStartSelection(int x, int y); 10005 private native void nativeStopGL(); 10006 private native Rect nativeSubtractLayers(Rect content); 10007 private native int nativeTextGeneration(); 10008 private native void nativeDiscardAllTextures(); 10009 private native void nativeTileProfilingStart(); 10010 private native float nativeTileProfilingStop(); 10011 private native void nativeTileProfilingClear(); 10012 private native int nativeTileProfilingNumFrames(); 10013 private native int nativeTileProfilingNumTilesInFrame(int frame); 10014 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 10015 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 10016 // Never call this version except by updateCachedTextfield(String) - 10017 // we always want to pass in our generation number. 10018 private native void nativeUpdateCachedTextfield(String updatedText, 10019 int generation); 10020 private native boolean nativeWordSelection(int x, int y); 10021 // return NO_LEFTEDGE means failure. 10022 static final int NO_LEFTEDGE = -1; 10023 native int nativeGetBlockLeftEdge(int x, int y, float scale); 10024 10025 private native void nativeUseHardwareAccelSkia(boolean enabled); 10026 10027 // Returns a pointer to the scrollable LayerAndroid at the given point. 10028 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 10029 Rect scrollBounds); 10030 /** 10031 * Scroll the specified layer. 10032 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 10033 * @param newX Destination x position to which to scroll. 10034 * @param newY Destination y position to which to scroll. 10035 * @return True if the layer is successfully scrolled. 10036 */ 10037 private native boolean nativeScrollLayer(int layer, int newX, int newY); 10038 private native void nativeSetIsScrolling(boolean isScrolling); 10039 private native int nativeGetBackgroundColor(); 10040 native boolean nativeSetProperty(String key, String value); 10041 native String nativeGetProperty(String key); 10042 /** 10043 * See {@link ComponentCallbacks2} for the trim levels and descriptions 10044 */ 10045 private static native void nativeOnTrimMemory(int level); 10046 private static native void nativeSetPauseDrawing(int instance, boolean pause); 10047 private static native boolean nativeDisableNavcache(); 10048 private static native void nativeSetTextSelection(int instance, int selection); 10049 private static native int nativeGetHandleLayerId(int instance, int handle, 10050 Rect cursorLocation); 10051 private static native boolean nativeIsBaseFirst(int instance); 10052} 10053