WebView.java revision 9b24dad746718df41f6260e36f2e824868896d02
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.speech.tts.TextToSpeech; 63import android.text.Editable; 64import android.text.InputType; 65import android.text.Selection; 66import android.text.TextUtils; 67import android.util.AttributeSet; 68import android.util.EventLog; 69import android.util.Log; 70import android.view.Display; 71import android.view.Gravity; 72import android.view.HapticFeedbackConstants; 73import android.view.HardwareCanvas; 74import android.view.InputDevice; 75import android.view.KeyCharacterMap; 76import android.view.KeyEvent; 77import android.view.LayoutInflater; 78import android.view.MotionEvent; 79import android.view.ScaleGestureDetector; 80import android.view.SoundEffectConstants; 81import android.view.VelocityTracker; 82import android.view.View; 83import android.view.ViewConfiguration; 84import android.view.ViewGroup; 85import android.view.ViewParent; 86import android.view.ViewTreeObserver; 87import android.view.WindowManager; 88import android.view.accessibility.AccessibilityEvent; 89import android.view.accessibility.AccessibilityManager; 90import android.view.accessibility.AccessibilityNodeInfo; 91import android.view.inputmethod.BaseInputConnection; 92import android.view.inputmethod.EditorInfo; 93import android.view.inputmethod.InputConnection; 94import android.view.inputmethod.InputMethodManager; 95import android.webkit.WebTextView.AutoCompleteAdapter; 96import android.webkit.WebViewCore.DrawData; 97import android.webkit.WebViewCore.EventHub; 98import android.webkit.WebViewCore.TouchEventData; 99import android.webkit.WebViewCore.TouchHighlightData; 100import android.webkit.WebViewCore.WebKitHitTest; 101import android.widget.AbsoluteLayout; 102import android.widget.Adapter; 103import android.widget.AdapterView; 104import android.widget.AdapterView.OnItemClickListener; 105import android.widget.ArrayAdapter; 106import android.widget.CheckedTextView; 107import android.widget.LinearLayout; 108import android.widget.ListView; 109import android.widget.OverScroller; 110import android.widget.Toast; 111 112import junit.framework.Assert; 113 114import java.io.File; 115import java.io.FileInputStream; 116import java.io.FileNotFoundException; 117import java.io.FileOutputStream; 118import java.io.IOException; 119import java.io.InputStream; 120import java.io.OutputStream; 121import java.net.URLDecoder; 122import java.util.ArrayList; 123import java.util.HashMap; 124import java.util.HashSet; 125import java.util.List; 126import java.util.Map; 127import java.util.Set; 128import java.util.Vector; 129import java.util.regex.Matcher; 130import java.util.regex.Pattern; 131 132/** 133 * <p>A View that displays web pages. This class is the basis upon which you 134 * can roll your own web browser or simply display some online content within your Activity. 135 * It uses the WebKit rendering engine to display 136 * web pages and includes methods to navigate forward and backward 137 * through a history, zoom in and out, perform text searches and more.</p> 138 * <p>To enable the built-in zoom, set 139 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 140 * (introduced in API version 3). 141 * <p>Note that, in order for your Activity to access the Internet and load web pages 142 * in a WebView, you must add the {@code INTERNET} permissions to your 143 * Android Manifest file:</p> 144 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 145 * 146 * <p>This must be a child of the <a 147 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 148 * element.</p> 149 * 150 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 151 * tutorial</a>.</p> 152 * 153 * <h3>Basic usage</h3> 154 * 155 * <p>By default, a WebView provides no browser-like widgets, does not 156 * enable JavaScript and web page errors are ignored. If your goal is only 157 * to display some HTML as a part of your UI, this is probably fine; 158 * the user won't need to interact with the web page beyond reading 159 * it, and the web page won't need to interact with the user. If you 160 * actually want a full-blown web browser, then you probably want to 161 * invoke the Browser application with a URL Intent rather than show it 162 * with a WebView. For example: 163 * <pre> 164 * Uri uri = Uri.parse("http://www.example.com"); 165 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 166 * startActivity(intent); 167 * </pre> 168 * <p>See {@link android.content.Intent} for more information.</p> 169 * 170 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 171 * or set the entire Activity window as a WebView during {@link 172 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 173 * <pre class="prettyprint"> 174 * WebView webview = new WebView(this); 175 * setContentView(webview); 176 * </pre> 177 * 178 * <p>Then load the desired web page:</p> 179 * <pre> 180 * // Simplest usage: note that an exception will NOT be thrown 181 * // if there is an error loading this page (see below). 182 * webview.loadUrl("http://slashdot.org/"); 183 * 184 * // OR, you can also load from an HTML string: 185 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 186 * webview.loadData(summary, "text/html", null); 187 * // ... although note that there are restrictions on what this HTML can do. 188 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 189 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 190 * </pre> 191 * 192 * <p>A WebView has several customization points where you can add your 193 * own behavior. These are:</p> 194 * 195 * <ul> 196 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 197 * This class is called when something that might impact a 198 * browser UI happens, for instance, progress updates and 199 * JavaScript alerts are sent here (see <a 200 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 201 * </li> 202 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 203 * It will be called when things happen that impact the 204 * rendering of the content, eg, errors or form submissions. You 205 * can also intercept URL loading here (via {@link 206 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 207 * shouldOverrideUrlLoading()}).</li> 208 * <li>Modifying the {@link android.webkit.WebSettings}, such as 209 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 210 * setJavaScriptEnabled()}. </li> 211 * <li>Injecting Java objects into the WebView using the 212 * {@link android.webkit.WebView#addJavascriptInterface} method. This 213 * method allows you to inject Java objects into a page's JavaScript 214 * context, so that they can be accessed by JavaScript in the page.</li> 215 * </ul> 216 * 217 * <p>Here's a more complicated example, showing error handling, 218 * settings, and progress notification:</p> 219 * 220 * <pre class="prettyprint"> 221 * // Let's display the progress in the activity title bar, like the 222 * // browser app does. 223 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 224 * 225 * webview.getSettings().setJavaScriptEnabled(true); 226 * 227 * final Activity activity = this; 228 * webview.setWebChromeClient(new WebChromeClient() { 229 * public void onProgressChanged(WebView view, int progress) { 230 * // Activities and WebViews measure progress with different scales. 231 * // The progress meter will automatically disappear when we reach 100% 232 * activity.setProgress(progress * 1000); 233 * } 234 * }); 235 * webview.setWebViewClient(new WebViewClient() { 236 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 237 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 238 * } 239 * }); 240 * 241 * webview.loadUrl("http://slashdot.org/"); 242 * </pre> 243 * 244 * <h3>Cookie and window management</h3> 245 * 246 * <p>For obvious security reasons, your application has its own 247 * cache, cookie store etc.—it does not share the Browser 248 * application's data. Cookies are managed on a separate thread, so 249 * operations like index building don't block the UI 250 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 251 * if you want to use cookies in your application. 252 * </p> 253 * 254 * <p>By default, requests by the HTML to open new windows are 255 * ignored. This is true whether they be opened by JavaScript or by 256 * the target attribute on a link. You can customize your 257 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 258 * and render them in whatever manner you want.</p> 259 * 260 * <p>The standard behavior for an Activity is to be destroyed and 261 * recreated when the device orientation or any other configuration changes. This will cause 262 * the WebView to reload the current page. If you don't want that, you 263 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 264 * changes, and then just leave the WebView alone. It'll automatically 265 * re-orient itself as appropriate. Read <a 266 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 267 * more information about how to handle configuration changes during runtime.</p> 268 * 269 * 270 * <h3>Building web pages to support different screen densities</h3> 271 * 272 * <p>The screen density of a device is based on the screen resolution. A screen with low density 273 * has fewer available pixels per inch, where a screen with high density 274 * has more — sometimes significantly more — pixels per inch. The density of a 275 * screen is important because, other things being equal, a UI element (such as a button) whose 276 * height and width are defined in terms of screen pixels will appear larger on the lower density 277 * screen and smaller on the higher density screen. 278 * For simplicity, Android collapses all actual screen densities into three generalized densities: 279 * high, medium, and low.</p> 280 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 281 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 282 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 283 * are bigger). 284 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 285 * you (as a web developer) target screens with different screen densities.</p> 286 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 287 * <ul> 288 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 289 * default scaling factor used for the current device. For example, if the value of {@code 290 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 291 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 292 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 293 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 294 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 295 * (discussed below), then you can stop this default scaling behavior.</li> 296 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 297 * densities for which this style sheet is to be used. The corresponding value should be either 298 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 299 * density, or high density screens, respectively. For example: 300 * <pre> 301 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 302 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 303 * which is the high density pixel ratio.</p> 304 * </li> 305 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 306 * this to specify the target density for which the web page is designed, using the following 307 * values: 308 * <ul> 309 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 310 * occurs.</li> 311 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 312 * as appropriate.</li> 313 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 314 * low density screens scale down. This is also the default behavior.</li> 315 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 316 * as appropriate.</li> 317 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 318 * values are 70-400).</li> 319 * </ul> 320 * <p>Here's an example meta tag to specify the target density:</p> 321 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 322 * </ul> 323 * <p>If you want to modify your web page for different densities, by using the {@code 324 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 325 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 326 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 327 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 328 * 329 * <h3>HTML5 Video support</h3> 330 * 331 * <p>In order to support inline HTML5 video in your application, you need to have hardware 332 * acceleration turned on, and set a {@link android.webkit.WebChromeClient}. For full screen support, 333 * implementations of {@link WebChromeClient#onShowCustomView(View, WebChromeClient.CustomViewCallback)} 334 * and {@link WebChromeClient#onHideCustomView()} are required, 335 * {@link WebChromeClient#getVideoLoadingProgressView()} is optional. 336 * </p> 337 * 338 * 339 */ 340@Widget 341public class WebView extends AbsoluteLayout 342 implements ViewTreeObserver.OnGlobalFocusChangeListener, 343 ViewGroup.OnHierarchyChangeListener { 344 345 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 346 @Override 347 public void onGlobalLayout() { 348 if (isShown()) { 349 setGLRectViewport(); 350 } 351 } 352 } 353 354 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 355 @Override 356 public void onScrollChanged() { 357 if (isShown()) { 358 setGLRectViewport(); 359 } 360 } 361 } 362 363 /** 364 * InputConnection used for ContentEditable. This captures changes 365 * to the text and sends them either as key strokes or text changes. 366 */ 367 private class WebViewInputConnection extends BaseInputConnection { 368 // Used for mapping characters to keys typed. 369 private KeyCharacterMap mKeyCharacterMap; 370 private boolean mIsKeySentByMe; 371 372 public WebViewInputConnection() { 373 super(WebView.this, true); 374 } 375 376 @Override 377 public boolean sendKeyEvent(KeyEvent event) { 378 // Latin IME occasionally sends delete codes directly using 379 // sendKeyEvents. WebViewInputConnection should treat this 380 // as a deleteSurroundingText. 381 if (!mIsKeySentByMe 382 && event.getKeyCode() == KeyEvent.KEYCODE_DEL) { 383 Editable editable = getEditable(); 384 int selectionStart = Selection.getSelectionStart(editable); 385 int selectionEnd = Selection.getSelectionEnd(editable); 386 if (selectionEnd > 0 && (selectionStart == selectionEnd)) { 387 int action = event.getAction(); 388 if (action == KeyEvent.ACTION_UP) { 389 return deleteSurroundingText(1, 0); 390 } else if (action == KeyEvent.ACTION_DOWN) { 391 return true; // the delete will happen in ACTION_UP 392 } 393 } 394 } 395 return super.sendKeyEvent(event); 396 } 397 398 public void setTextAndKeepSelection(CharSequence text) { 399 Editable editable = getEditable(); 400 int selectionStart = Selection.getSelectionStart(editable); 401 int selectionEnd = Selection.getSelectionEnd(editable); 402 editable.replace(0, editable.length(), text); 403 InputMethodManager imm = InputMethodManager.peekInstance(); 404 if (imm != null) { 405 // Since the text has changed, do not allow the IME to replace the 406 // existing text as though it were a completion. 407 imm.restartInput(WebView.this); 408 } 409 // Keep the previous selection. 410 selectionStart = Math.min(selectionStart, editable.length()); 411 selectionEnd = Math.min(selectionEnd, editable.length()); 412 setSelection(selectionStart, selectionEnd); 413 } 414 415 @Override 416 public boolean setComposingText(CharSequence text, int newCursorPosition) { 417 Editable editable = getEditable(); 418 int start = getComposingSpanStart(editable); 419 int end = getComposingSpanEnd(editable); 420 if (start < 0 || end < 0) { 421 start = Selection.getSelectionStart(editable); 422 end = Selection.getSelectionEnd(editable); 423 } 424 if (end < start) { 425 int temp = end; 426 end = start; 427 start = temp; 428 } 429 setNewText(start, end, text); 430 return super.setComposingText(text, newCursorPosition); 431 } 432 433 @Override 434 public boolean commitText(CharSequence text, int newCursorPosition) { 435 setComposingText(text, newCursorPosition); 436 int cursorPosition = Selection.getSelectionEnd(getEditable()); 437 setComposingRegion(cursorPosition, cursorPosition); 438 return true; 439 } 440 441 @Override 442 public boolean deleteSurroundingText(int leftLength, int rightLength) { 443 Editable editable = getEditable(); 444 int cursorPosition = Selection.getSelectionEnd(editable); 445 int startDelete = Math.max(0, cursorPosition - leftLength); 446 int endDelete = Math.min(editable.length(), 447 cursorPosition + rightLength); 448 setNewText(startDelete, endDelete, ""); 449 return super.deleteSurroundingText(leftLength, rightLength); 450 } 451 452 /** 453 * Sends a text change to webkit indirectly. If it is a single- 454 * character add or delete, it sends it as a key stroke. If it cannot 455 * be represented as a key stroke, it sends it as a field change. 456 * @param start The start offset (inclusive) of the text being changed. 457 * @param end The end offset (exclusive) of the text being changed. 458 * @param text The new text to replace the changed text. 459 */ 460 private void setNewText(int start, int end, CharSequence text) { 461 mIsKeySentByMe = true; 462 Editable editable = getEditable(); 463 CharSequence original = editable.subSequence(start, end); 464 boolean isCharacterAdd = false; 465 boolean isCharacterDelete = false; 466 int textLength = text.length(); 467 int originalLength = original.length(); 468 if (textLength > originalLength) { 469 isCharacterAdd = (textLength == originalLength + 1) 470 && TextUtils.regionMatches(text, 0, original, 0, 471 originalLength); 472 } else if (originalLength > textLength) { 473 isCharacterDelete = (textLength == originalLength - 1) 474 && TextUtils.regionMatches(text, 0, original, 0, 475 textLength); 476 } 477 if (isCharacterAdd) { 478 sendCharacter(text.charAt(textLength - 1)); 479 } else if (isCharacterDelete) { 480 sendDeleteKey(); 481 } else if (textLength != originalLength || 482 !TextUtils.regionMatches(text, 0, original, 0, 483 textLength)) { 484 // Send a message so that key strokes and text replacement 485 // do not come out of order. 486 Message replaceMessage = mPrivateHandler.obtainMessage( 487 REPLACE_TEXT, start, end, text.toString()); 488 mPrivateHandler.sendMessage(replaceMessage); 489 } 490 mIsKeySentByMe = false; 491 } 492 493 /** 494 * Send a single character to the WebView as a key down and up event. 495 * @param c The character to be sent. 496 */ 497 private void sendCharacter(char c) { 498 if (mKeyCharacterMap == null) { 499 mKeyCharacterMap = KeyCharacterMap.load(KeyCharacterMap.VIRTUAL_KEYBOARD); 500 } 501 char[] chars = new char[1]; 502 chars[0] = c; 503 KeyEvent[] events = mKeyCharacterMap.getEvents(chars); 504 if (events != null) { 505 for (KeyEvent event : events) { 506 sendKeyEvent(event); 507 } 508 } 509 } 510 511 /** 512 * Send the delete character as a key down and up event. 513 */ 514 private void sendDeleteKey() { 515 long eventTime = SystemClock.uptimeMillis(); 516 sendKeyEvent(new KeyEvent(eventTime, eventTime, 517 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL, 0, 0, 518 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 519 KeyEvent.FLAG_SOFT_KEYBOARD)); 520 sendKeyEvent(new KeyEvent(SystemClock.uptimeMillis(), eventTime, 521 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DEL, 0, 0, 522 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 523 KeyEvent.FLAG_SOFT_KEYBOARD)); 524 } 525 } 526 527 528 // The listener to capture global layout change event. 529 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 530 531 // The listener to capture scroll event. 532 private InnerScrollChangedListener mScrollChangedListener = null; 533 534 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 535 // the screen all-the-time. Good for profiling our drawing code 536 static private final boolean AUTO_REDRAW_HACK = false; 537 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 538 private boolean mAutoRedraw; 539 540 // Reference to the AlertDialog displayed by InvokeListBox. 541 // It's used to dismiss the dialog in destroy if not done before. 542 private AlertDialog mListBoxDialog = null; 543 544 static final String LOGTAG = "webview"; 545 546 private ZoomManager mZoomManager; 547 548 private final Rect mGLRectViewport = new Rect(); 549 private final Rect mViewRectViewport = new Rect(); 550 private final RectF mVisibleContentRect = new RectF(); 551 private boolean mGLViewportEmpty = false; 552 WebViewInputConnection mInputConnection = null; 553 private int mFieldPointer; 554 555 /** 556 * Transportation object for returning WebView across thread boundaries. 557 */ 558 public class WebViewTransport { 559 private WebView mWebview; 560 561 /** 562 * Set the WebView to the transportation object. 563 * @param webview The WebView to transport. 564 */ 565 public synchronized void setWebView(WebView webview) { 566 mWebview = webview; 567 } 568 569 /** 570 * Return the WebView object. 571 * @return WebView The transported WebView object. 572 */ 573 public synchronized WebView getWebView() { 574 return mWebview; 575 } 576 } 577 578 private static class OnTrimMemoryListener implements ComponentCallbacks2 { 579 private static OnTrimMemoryListener sInstance = null; 580 581 static void init(Context c) { 582 if (sInstance == null) { 583 sInstance = new OnTrimMemoryListener(c.getApplicationContext()); 584 } 585 } 586 587 private OnTrimMemoryListener(Context c) { 588 c.registerComponentCallbacks(this); 589 } 590 591 @Override 592 public void onConfigurationChanged(Configuration newConfig) { 593 // Ignore 594 } 595 596 @Override 597 public void onLowMemory() { 598 // Ignore 599 } 600 601 @Override 602 public void onTrimMemory(int level) { 603 if (DebugFlags.WEB_VIEW) { 604 Log.d("WebView", "onTrimMemory: " + level); 605 } 606 WebView.nativeOnTrimMemory(level); 607 } 608 609 } 610 611 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 612 private final CallbackProxy mCallbackProxy; 613 614 private final WebViewDatabase mDatabase; 615 616 // SSL certificate for the main top-level page (if secure) 617 private SslCertificate mCertificate; 618 619 // Native WebView pointer that is 0 until the native object has been 620 // created. 621 private int mNativeClass; 622 // This would be final but it needs to be set to null when the WebView is 623 // destroyed. 624 private WebViewCore mWebViewCore; 625 // Handler for dispatching UI messages. 626 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 627 private WebTextView mWebTextView; 628 // Used to ignore changes to webkit text that arrives to the UI side after 629 // more key events. 630 private int mTextGeneration; 631 632 /* package */ void incrementTextGeneration() { mTextGeneration++; } 633 634 // Used by WebViewCore to create child views. 635 /* package */ final ViewManager mViewManager; 636 637 // Used to display in full screen mode 638 PluginFullScreenHolder mFullScreenHolder; 639 640 /** 641 * Position of the last touch event in pixels. 642 * Use integer to prevent loss of dragging delta calculation accuracy; 643 * which was done in float and converted to integer, and resulted in gradual 644 * and compounding touch position and view dragging mismatch. 645 */ 646 private int mLastTouchX; 647 private int mLastTouchY; 648 private int mStartTouchX; 649 private int mStartTouchY; 650 private float mAverageAngle; 651 652 /** 653 * Time of the last touch event. 654 */ 655 private long mLastTouchTime; 656 657 /** 658 * Time of the last time sending touch event to WebViewCore 659 */ 660 private long mLastSentTouchTime; 661 662 /** 663 * The minimum elapsed time before sending another ACTION_MOVE event to 664 * WebViewCore. This really should be tuned for each type of the devices. 665 * For example in Google Map api test case, it takes Dream device at least 666 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 667 * triggering the layout and drawing the picture. While the same process 668 * takes 60+ms on the current high speed device. If we make 669 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 670 * to WebViewCore queue and the real layout and draw events will be pushed 671 * to further, which slows down the refresh rate. Choose 50 to favor the 672 * current high speed devices. For Dream like devices, 100 is a better 673 * choice. Maybe make this in the buildspec later. 674 * (Update 12/14/2010: changed to 0 since current device should be able to 675 * handle the raw events and Map team voted to have the raw events too. 676 */ 677 private static final int TOUCH_SENT_INTERVAL = 0; 678 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 679 680 /** 681 * Helper class to get velocity for fling 682 */ 683 VelocityTracker mVelocityTracker; 684 private int mMaximumFling; 685 private float mLastVelocity; 686 private float mLastVelX; 687 private float mLastVelY; 688 689 // The id of the native layer being scrolled. 690 private int mCurrentScrollingLayerId; 691 private Rect mScrollingLayerRect = new Rect(); 692 693 // only trigger accelerated fling if the new velocity is at least 694 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 695 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 696 697 /** 698 * Touch mode 699 */ 700 private int mTouchMode = TOUCH_DONE_MODE; 701 private static final int TOUCH_INIT_MODE = 1; 702 private static final int TOUCH_DRAG_START_MODE = 2; 703 private static final int TOUCH_DRAG_MODE = 3; 704 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 705 private static final int TOUCH_SHORTPRESS_MODE = 5; 706 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 707 private static final int TOUCH_DONE_MODE = 7; 708 private static final int TOUCH_PINCH_DRAG = 8; 709 private static final int TOUCH_DRAG_LAYER_MODE = 9; 710 711 // Whether to forward the touch events to WebCore 712 // Can only be set by WebKit via JNI. 713 private boolean mForwardTouchEvents = false; 714 715 // Whether to prevent default during touch. The initial value depends on 716 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 717 // for touch down. Otherwise UI will wait for the answer of the first 718 // confirmed move before taking over the control. 719 private static final int PREVENT_DEFAULT_NO = 0; 720 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 721 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 722 private static final int PREVENT_DEFAULT_YES = 3; 723 private static final int PREVENT_DEFAULT_IGNORE = 4; 724 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 725 726 // true when the touch movement exceeds the slop 727 private boolean mConfirmMove; 728 729 // if true, touch events will be first processed by WebCore, if prevent 730 // default is not set, the UI will continue handle them. 731 private boolean mDeferTouchProcess; 732 733 // to avoid interfering with the current touch events, track them 734 // separately. Currently no snapping or fling in the deferred process mode 735 private int mDeferTouchMode = TOUCH_DONE_MODE; 736 private float mLastDeferTouchX; 737 private float mLastDeferTouchY; 738 739 // To keep track of whether the current drag was initiated by a WebTextView, 740 // so that we know not to hide the cursor 741 boolean mDragFromTextInput; 742 743 // Whether or not to draw the cursor ring. 744 private boolean mDrawCursorRing = true; 745 746 // true if onPause has been called (and not onResume) 747 private boolean mIsPaused; 748 749 private HitTestResult mInitialHitTestResult; 750 private WebKitHitTest mFocusedNode; 751 752 /** 753 * Customizable constant 754 */ 755 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 756 private int mTouchSlopSquare; 757 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 758 private int mDoubleTapSlopSquare; 759 // pre-computed density adjusted navigation slop 760 private int mNavSlop; 761 // This should be ViewConfiguration.getTapTimeout() 762 // But system time out is 100ms, which is too short for the browser. 763 // In the browser, if it switches out of tap too soon, jump tap won't work. 764 // In addition, a double tap on a trackpad will always have a duration of 765 // 300ms, so this value must be at least that (otherwise we will timeout the 766 // first tap and convert it to a long press). 767 private static final int TAP_TIMEOUT = 300; 768 // This should be ViewConfiguration.getLongPressTimeout() 769 // But system time out is 500ms, which is too short for the browser. 770 // With a short timeout, it's difficult to treat trigger a short press. 771 private static final int LONG_PRESS_TIMEOUT = 1000; 772 // needed to avoid flinging after a pause of no movement 773 private static final int MIN_FLING_TIME = 250; 774 // draw unfiltered after drag is held without movement 775 private static final int MOTIONLESS_TIME = 100; 776 // The amount of content to overlap between two screens when going through 777 // pages with the space bar, in pixels. 778 private static final int PAGE_SCROLL_OVERLAP = 24; 779 780 /** 781 * These prevent calling requestLayout if either dimension is fixed. This 782 * depends on the layout parameters and the measure specs. 783 */ 784 boolean mWidthCanMeasure; 785 boolean mHeightCanMeasure; 786 787 // Remember the last dimensions we sent to the native side so we can avoid 788 // sending the same dimensions more than once. 789 int mLastWidthSent; 790 int mLastHeightSent; 791 // Since view height sent to webkit could be fixed to avoid relayout, this 792 // value records the last sent actual view height. 793 int mLastActualHeightSent; 794 795 private int mContentWidth; // cache of value from WebViewCore 796 private int mContentHeight; // cache of value from WebViewCore 797 798 // Need to have the separate control for horizontal and vertical scrollbar 799 // style than the View's single scrollbar style 800 private boolean mOverlayHorizontalScrollbar = true; 801 private boolean mOverlayVerticalScrollbar = false; 802 803 // our standard speed. this way small distances will be traversed in less 804 // time than large distances, but we cap the duration, so that very large 805 // distances won't take too long to get there. 806 private static final int STD_SPEED = 480; // pixels per second 807 // time for the longest scroll animation 808 private static final int MAX_DURATION = 750; // milliseconds 809 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 810 811 // Used by OverScrollGlow 812 OverScroller mScroller; 813 814 private boolean mInOverScrollMode = false; 815 private static Paint mOverScrollBackground; 816 private static Paint mOverScrollBorder; 817 818 private boolean mWrapContent; 819 private static final int MOTIONLESS_FALSE = 0; 820 private static final int MOTIONLESS_PENDING = 1; 821 private static final int MOTIONLESS_TRUE = 2; 822 private static final int MOTIONLESS_IGNORE = 3; 823 private int mHeldMotionless; 824 825 // An instance for injecting accessibility in WebViews with disabled 826 // JavaScript or ones for which no accessibility script exists 827 private AccessibilityInjector mAccessibilityInjector; 828 829 // flag indicating if accessibility script is injected so we 830 // know to handle Shift and arrows natively first 831 private boolean mAccessibilityScriptInjected; 832 833 private Drawable mSelectHandleLeft; 834 private Drawable mSelectHandleRight; 835 private Rect mSelectCursorBase = new Rect(); 836 private int mSelectCursorBaseLayerId; 837 private Rect mSelectCursorExtent = new Rect(); 838 private int mSelectCursorExtentLayerId; 839 private Rect mSelectDraggingCursor; 840 private Point mSelectDraggingOffset = new Point(); 841 static final int HANDLE_ID_START = 0; 842 static final int HANDLE_ID_END = 1; 843 static final int HANDLE_ID_BASE = 2; 844 static final int HANDLE_ID_EXTENT = 3; 845 846 static boolean sDisableNavcache = false; 847 static boolean sEnableWebTextView = false; 848 // the color used to highlight the touch rectangles 849 static final int HIGHLIGHT_COLOR = 0x6633b5e5; 850 // the region indicating where the user touched on the screen 851 private Region mTouchHighlightRegion = new Region(); 852 // the paint for the touch highlight 853 private Paint mTouchHightlightPaint = new Paint(); 854 // debug only 855 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 856 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 857 private Paint mTouchCrossHairColor; 858 private int mTouchHighlightX; 859 private int mTouchHighlightY; 860 private long mTouchHighlightRequested; 861 862 // Basically this proxy is used to tell the Video to update layer tree at 863 // SetBaseLayer time and to pause when WebView paused. 864 private HTML5VideoViewProxy mHTML5VideoViewProxy; 865 866 // If we are using a set picture, don't send view updates to webkit 867 private boolean mBlockWebkitViewMessages = false; 868 869 // cached value used to determine if we need to switch drawing models 870 private boolean mHardwareAccelSkia = false; 871 872 /* 873 * Private message ids 874 */ 875 private static final int REMEMBER_PASSWORD = 1; 876 private static final int NEVER_REMEMBER_PASSWORD = 2; 877 private static final int SWITCH_TO_SHORTPRESS = 3; 878 private static final int SWITCH_TO_LONGPRESS = 4; 879 private static final int RELEASE_SINGLE_TAP = 5; 880 private static final int REQUEST_FORM_DATA = 6; 881 private static final int DRAG_HELD_MOTIONLESS = 8; 882 private static final int AWAKEN_SCROLL_BARS = 9; 883 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 884 private static final int SCROLL_SELECT_TEXT = 11; 885 886 887 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 888 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 889 890 /* 891 * Package message ids 892 */ 893 static final int SCROLL_TO_MSG_ID = 101; 894 static final int NEW_PICTURE_MSG_ID = 105; 895 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 896 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 897 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 898 static final int UPDATE_ZOOM_RANGE = 109; 899 static final int UNHANDLED_NAV_KEY = 110; 900 static final int CLEAR_TEXT_ENTRY = 111; 901 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 902 static final int SHOW_RECT_MSG_ID = 113; 903 static final int LONG_PRESS_CENTER = 114; 904 static final int PREVENT_TOUCH_ID = 115; 905 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 906 // obj=Rect in doc coordinates 907 static final int INVAL_RECT_MSG_ID = 117; 908 static final int REQUEST_KEYBOARD = 118; 909 static final int DO_MOTION_UP = 119; 910 static final int SHOW_FULLSCREEN = 120; 911 static final int HIDE_FULLSCREEN = 121; 912 static final int DOM_FOCUS_CHANGED = 122; 913 static final int REPLACE_BASE_CONTENT = 123; 914 static final int FORM_DID_BLUR = 124; 915 static final int RETURN_LABEL = 125; 916 static final int FIND_AGAIN = 126; 917 static final int CENTER_FIT_RECT = 127; 918 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 919 static final int SET_SCROLLBAR_MODES = 129; 920 static final int SELECTION_STRING_CHANGED = 130; 921 static final int HIT_TEST_RESULT = 131; 922 static final int SAVE_WEBARCHIVE_FINISHED = 132; 923 924 static final int SET_AUTOFILLABLE = 133; 925 static final int AUTOFILL_COMPLETE = 134; 926 927 static final int SELECT_AT = 135; 928 static final int SCREEN_ON = 136; 929 static final int ENTER_FULLSCREEN_VIDEO = 137; 930 static final int UPDATE_SELECTION = 138; 931 static final int UPDATE_ZOOM_DENSITY = 139; 932 static final int EXIT_FULLSCREEN_VIDEO = 140; 933 934 static final int COPY_TO_CLIPBOARD = 141; 935 static final int INIT_EDIT_FIELD = 142; 936 static final int REPLACE_TEXT = 143; 937 938 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 939 private static final int LAST_PACKAGE_MSG_ID = HIT_TEST_RESULT; 940 941 static final String[] HandlerPrivateDebugString = { 942 "REMEMBER_PASSWORD", // = 1; 943 "NEVER_REMEMBER_PASSWORD", // = 2; 944 "SWITCH_TO_SHORTPRESS", // = 3; 945 "SWITCH_TO_LONGPRESS", // = 4; 946 "RELEASE_SINGLE_TAP", // = 5; 947 "REQUEST_FORM_DATA", // = 6; 948 "RESUME_WEBCORE_PRIORITY", // = 7; 949 "DRAG_HELD_MOTIONLESS", // = 8; 950 "AWAKEN_SCROLL_BARS", // = 9; 951 "PREVENT_DEFAULT_TIMEOUT", // = 10; 952 "SCROLL_SELECT_TEXT" // = 11; 953 }; 954 955 static final String[] HandlerPackageDebugString = { 956 "SCROLL_TO_MSG_ID", // = 101; 957 "102", // = 102; 958 "103", // = 103; 959 "104", // = 104; 960 "NEW_PICTURE_MSG_ID", // = 105; 961 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 962 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 963 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 964 "UPDATE_ZOOM_RANGE", // = 109; 965 "UNHANDLED_NAV_KEY", // = 110; 966 "CLEAR_TEXT_ENTRY", // = 111; 967 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 968 "SHOW_RECT_MSG_ID", // = 113; 969 "LONG_PRESS_CENTER", // = 114; 970 "PREVENT_TOUCH_ID", // = 115; 971 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 972 "INVAL_RECT_MSG_ID", // = 117; 973 "REQUEST_KEYBOARD", // = 118; 974 "DO_MOTION_UP", // = 119; 975 "SHOW_FULLSCREEN", // = 120; 976 "HIDE_FULLSCREEN", // = 121; 977 "DOM_FOCUS_CHANGED", // = 122; 978 "REPLACE_BASE_CONTENT", // = 123; 979 "FORM_DID_BLUR", // = 124; 980 "RETURN_LABEL", // = 125; 981 "FIND_AGAIN", // = 126; 982 "CENTER_FIT_RECT", // = 127; 983 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 984 "SET_SCROLLBAR_MODES", // = 129; 985 "SELECTION_STRING_CHANGED", // = 130; 986 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 987 "SAVE_WEBARCHIVE_FINISHED", // = 132; 988 "SET_AUTOFILLABLE", // = 133; 989 "AUTOFILL_COMPLETE", // = 134; 990 "SELECT_AT", // = 135; 991 "SCREEN_ON", // = 136; 992 "ENTER_FULLSCREEN_VIDEO", // = 137; 993 "UPDATE_SELECTION", // = 138; 994 "UPDATE_ZOOM_DENSITY" // = 139; 995 }; 996 997 // If the site doesn't use the viewport meta tag to specify the viewport, 998 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 999 static final int DEFAULT_VIEWPORT_WIDTH = 980; 1000 1001 // normally we try to fit the content to the minimum preferred width 1002 // calculated by the Webkit. To avoid the bad behavior when some site's 1003 // minimum preferred width keeps growing when changing the viewport width or 1004 // the minimum preferred width is huge, an upper limit is needed. 1005 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 1006 1007 // initial scale in percent. 0 means using default. 1008 private int mInitialScaleInPercent = 0; 1009 1010 // Whether or not a scroll event should be sent to webkit. This is only set 1011 // to false when restoring the scroll position. 1012 private boolean mSendScrollEvent = true; 1013 1014 private int mSnapScrollMode = SNAP_NONE; 1015 private static final int SNAP_NONE = 0; 1016 private static final int SNAP_LOCK = 1; // not a separate state 1017 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 1018 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 1019 private boolean mSnapPositive; 1020 1021 // keep these in sync with their counterparts in WebView.cpp 1022 private static final int DRAW_EXTRAS_NONE = 0; 1023 private static final int DRAW_EXTRAS_FIND = 1; 1024 private static final int DRAW_EXTRAS_SELECTION = 2; 1025 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 1026 1027 // keep this in sync with WebCore:ScrollbarMode in WebKit 1028 private static final int SCROLLBAR_AUTO = 0; 1029 private static final int SCROLLBAR_ALWAYSOFF = 1; 1030 // as we auto fade scrollbar, this is ignored. 1031 private static final int SCROLLBAR_ALWAYSON = 2; 1032 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 1033 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 1034 1035 // constants for determining script injection strategy 1036 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 1037 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 1038 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 1039 1040 // the alias via which accessibility JavaScript interface is exposed 1041 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 1042 1043 // Template for JavaScript that injects a screen-reader. 1044 private static final String ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE = 1045 "javascript:(function() {" + 1046 " var chooser = document.createElement('script');" + 1047 " chooser.type = 'text/javascript';" + 1048 " chooser.src = '%1s';" + 1049 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 1050 " })();"; 1051 1052 // Regular expression that matches the "axs" URL parameter. 1053 // The value of 0 means the accessibility script is opted out 1054 // The value of 1 means the accessibility script is already injected 1055 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 1056 1057 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 1058 private TextToSpeech mTextToSpeech; 1059 1060 // variable to cache the above pattern in case accessibility is enabled. 1061 private Pattern mMatchAxsUrlParameterPattern; 1062 1063 /** 1064 * Max distance to overscroll by in pixels. 1065 * This how far content can be pulled beyond its normal bounds by the user. 1066 */ 1067 private int mOverscrollDistance; 1068 1069 /** 1070 * Max distance to overfling by in pixels. 1071 * This is how far flinged content can move beyond the end of its normal bounds. 1072 */ 1073 private int mOverflingDistance; 1074 1075 private OverScrollGlow mOverScrollGlow; 1076 1077 // Used to match key downs and key ups 1078 private Vector<Integer> mKeysPressed; 1079 1080 /* package */ static boolean mLogEvent = true; 1081 1082 // for event log 1083 private long mLastTouchUpTime = 0; 1084 1085 private WebViewCore.AutoFillData mAutoFillData; 1086 1087 private static boolean sNotificationsEnabled = true; 1088 1089 /** 1090 * URI scheme for telephone number 1091 */ 1092 public static final String SCHEME_TEL = "tel:"; 1093 /** 1094 * URI scheme for email address 1095 */ 1096 public static final String SCHEME_MAILTO = "mailto:"; 1097 /** 1098 * URI scheme for map address 1099 */ 1100 public static final String SCHEME_GEO = "geo:0,0?q="; 1101 1102 private int mBackgroundColor = Color.WHITE; 1103 1104 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 1105 private int mAutoScrollX = 0; 1106 private int mAutoScrollY = 0; 1107 private int mMinAutoScrollX = 0; 1108 private int mMaxAutoScrollX = 0; 1109 private int mMinAutoScrollY = 0; 1110 private int mMaxAutoScrollY = 0; 1111 private Rect mScrollingLayerBounds = new Rect(); 1112 private boolean mSentAutoScrollMessage = false; 1113 1114 // used for serializing asynchronously handled touch events. 1115 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 1116 1117 // Used to track whether picture updating was paused due to a window focus change. 1118 private boolean mPictureUpdatePausedForFocusChange = false; 1119 1120 // Used to notify listeners of a new picture. 1121 private PictureListener mPictureListener; 1122 /** 1123 * Interface to listen for new pictures as they change. 1124 * @deprecated This interface is now obsolete. 1125 */ 1126 @Deprecated 1127 public interface PictureListener { 1128 /** 1129 * Notify the listener that the picture has changed. 1130 * @param view The WebView that owns the picture. 1131 * @param picture The new picture. 1132 * @deprecated Due to internal changes, the picture does not include 1133 * composited layers such as fixed position elements or scrollable divs. 1134 * While the PictureListener API can still be used to detect changes in 1135 * the WebView content, you are advised against its usage until a replacement 1136 * is provided in a future Android release 1137 */ 1138 @Deprecated 1139 public void onNewPicture(WebView view, Picture picture); 1140 } 1141 1142 public static class HitTestResult { 1143 /** 1144 * Default HitTestResult, where the target is unknown 1145 */ 1146 public static final int UNKNOWN_TYPE = 0; 1147 /** 1148 * @deprecated This type is no longer used. 1149 */ 1150 @Deprecated 1151 public static final int ANCHOR_TYPE = 1; 1152 /** 1153 * HitTestResult for hitting a phone number 1154 */ 1155 public static final int PHONE_TYPE = 2; 1156 /** 1157 * HitTestResult for hitting a map address 1158 */ 1159 public static final int GEO_TYPE = 3; 1160 /** 1161 * HitTestResult for hitting an email address 1162 */ 1163 public static final int EMAIL_TYPE = 4; 1164 /** 1165 * HitTestResult for hitting an HTML::img tag 1166 */ 1167 public static final int IMAGE_TYPE = 5; 1168 /** 1169 * @deprecated This type is no longer used. 1170 */ 1171 @Deprecated 1172 public static final int IMAGE_ANCHOR_TYPE = 6; 1173 /** 1174 * HitTestResult for hitting a HTML::a tag with src=http 1175 */ 1176 public static final int SRC_ANCHOR_TYPE = 7; 1177 /** 1178 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 1179 */ 1180 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 1181 /** 1182 * HitTestResult for hitting an edit text area 1183 */ 1184 public static final int EDIT_TEXT_TYPE = 9; 1185 1186 private int mType; 1187 private String mExtra; 1188 1189 HitTestResult() { 1190 mType = UNKNOWN_TYPE; 1191 } 1192 1193 private void setType(int type) { 1194 mType = type; 1195 } 1196 1197 private void setExtra(String extra) { 1198 mExtra = extra; 1199 } 1200 1201 /** 1202 * Gets the type of the hit test result. 1203 * @return See the XXX_TYPE constants defined in this class. 1204 */ 1205 public int getType() { 1206 return mType; 1207 } 1208 1209 /** 1210 * Gets additional type-dependant information about the result, see 1211 * {@link WebView#getHitTestResult()} for details. 1212 * @return may either be null or contain extra information about this result. 1213 */ 1214 public String getExtra() { 1215 return mExtra; 1216 } 1217 } 1218 1219 /** 1220 * Refer to {@link WebView#requestFocusNodeHref(Message)} for more information 1221 */ 1222 static class FocusNodeHref { 1223 static final String TITLE = "title"; 1224 static final String URL = "url"; 1225 static final String SRC = "src"; 1226 } 1227 1228 /** 1229 * Construct a new WebView with a Context object. 1230 * @param context A Context object used to access application assets. 1231 */ 1232 public WebView(Context context) { 1233 this(context, null); 1234 } 1235 1236 /** 1237 * Construct a new WebView with layout parameters. 1238 * @param context A Context object used to access application assets. 1239 * @param attrs An AttributeSet passed to our parent. 1240 */ 1241 public WebView(Context context, AttributeSet attrs) { 1242 this(context, attrs, com.android.internal.R.attr.webViewStyle); 1243 } 1244 1245 /** 1246 * Construct a new WebView with layout parameters and a default style. 1247 * @param context A Context object used to access application assets. 1248 * @param attrs An AttributeSet passed to our parent. 1249 * @param defStyle The default style resource ID. 1250 */ 1251 public WebView(Context context, AttributeSet attrs, int defStyle) { 1252 this(context, attrs, defStyle, false); 1253 } 1254 1255 /** 1256 * Construct a new WebView with layout parameters and a default style. 1257 * @param context A Context object used to access application assets. 1258 * @param attrs An AttributeSet passed to our parent. 1259 * @param defStyle The default style resource ID. 1260 * @param privateBrowsing If true the web view will be initialized in private mode. 1261 */ 1262 public WebView(Context context, AttributeSet attrs, int defStyle, 1263 boolean privateBrowsing) { 1264 this(context, attrs, defStyle, null, privateBrowsing); 1265 } 1266 1267 /** 1268 * Construct a new WebView with layout parameters, a default style and a set 1269 * of custom Javscript interfaces to be added to the WebView at initialization 1270 * time. This guarantees that these interfaces will be available when the JS 1271 * context is initialized. 1272 * @param context A Context object used to access application assets. 1273 * @param attrs An AttributeSet passed to our parent. 1274 * @param defStyle The default style resource ID. 1275 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1276 * object implementing those interfaces, as values. 1277 * @param privateBrowsing If true the web view will be initialized in private mode. 1278 * @hide This is an implementation detail. 1279 */ 1280 protected WebView(Context context, AttributeSet attrs, int defStyle, 1281 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1282 super(context, attrs, defStyle); 1283 checkThread(); 1284 1285 if (context == null) { 1286 throw new IllegalArgumentException("Invalid context argument"); 1287 } 1288 1289 // Used by the chrome stack to find application paths 1290 JniUtil.setContext(context); 1291 1292 mCallbackProxy = new CallbackProxy(context, this); 1293 mViewManager = new ViewManager(this); 1294 L10nUtils.setApplicationContext(context.getApplicationContext()); 1295 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1296 mDatabase = WebViewDatabase.getInstance(context); 1297 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1298 mZoomManager = new ZoomManager(this, mCallbackProxy); 1299 1300 /* The init method must follow the creation of certain member variables, 1301 * such as the mZoomManager. 1302 */ 1303 init(); 1304 setupPackageListener(context); 1305 setupProxyListener(context); 1306 updateMultiTouchSupport(context); 1307 1308 if (privateBrowsing) { 1309 startPrivateBrowsing(); 1310 } 1311 1312 mAutoFillData = new WebViewCore.AutoFillData(); 1313 } 1314 1315 private static class ProxyReceiver extends BroadcastReceiver { 1316 @Override 1317 public void onReceive(Context context, Intent intent) { 1318 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1319 handleProxyBroadcast(intent); 1320 } 1321 } 1322 } 1323 1324 /* 1325 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1326 */ 1327 private static ProxyReceiver sProxyReceiver; 1328 1329 /* 1330 * @param context This method expects this to be a valid context 1331 */ 1332 private static synchronized void setupProxyListener(Context context) { 1333 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1334 return; 1335 } 1336 IntentFilter filter = new IntentFilter(); 1337 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1338 sProxyReceiver = new ProxyReceiver(); 1339 Intent currentProxy = context.getApplicationContext().registerReceiver( 1340 sProxyReceiver, filter); 1341 if (currentProxy != null) { 1342 handleProxyBroadcast(currentProxy); 1343 } 1344 } 1345 1346 /* 1347 * @param context This method expects this to be a valid context 1348 */ 1349 private static synchronized void disableProxyListener(Context context) { 1350 if (sProxyReceiver == null) 1351 return; 1352 1353 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1354 sProxyReceiver = null; 1355 } 1356 1357 private static void handleProxyBroadcast(Intent intent) { 1358 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1359 if (proxyProperties == null || proxyProperties.getHost() == null) { 1360 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1361 return; 1362 } 1363 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1364 } 1365 1366 /* 1367 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1368 * or ACTION_PACKAGE_REMOVED. 1369 */ 1370 private static boolean sPackageInstallationReceiverAdded = false; 1371 1372 /* 1373 * A set of Google packages we monitor for the 1374 * navigator.isApplicationInstalled() API. Add additional packages as 1375 * needed. 1376 */ 1377 private static Set<String> sGoogleApps; 1378 static { 1379 sGoogleApps = new HashSet<String>(); 1380 sGoogleApps.add("com.google.android.youtube"); 1381 } 1382 1383 private static class PackageListener extends BroadcastReceiver { 1384 @Override 1385 public void onReceive(Context context, Intent intent) { 1386 final String action = intent.getAction(); 1387 final String packageName = intent.getData().getSchemeSpecificPart(); 1388 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1389 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1390 // if it is replacing, refreshPlugins() when adding 1391 return; 1392 } 1393 1394 if (sGoogleApps.contains(packageName)) { 1395 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1396 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1397 } else { 1398 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1399 } 1400 } 1401 1402 PluginManager pm = PluginManager.getInstance(context); 1403 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1404 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1405 } 1406 } 1407 } 1408 1409 private void setupPackageListener(Context context) { 1410 1411 /* 1412 * we must synchronize the instance check and the creation of the 1413 * receiver to ensure that only ONE receiver exists for all WebView 1414 * instances. 1415 */ 1416 synchronized (WebView.class) { 1417 1418 // if the receiver already exists then we do not need to register it 1419 // again 1420 if (sPackageInstallationReceiverAdded) { 1421 return; 1422 } 1423 1424 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1425 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1426 filter.addDataScheme("package"); 1427 BroadcastReceiver packageListener = new PackageListener(); 1428 context.getApplicationContext().registerReceiver(packageListener, filter); 1429 sPackageInstallationReceiverAdded = true; 1430 } 1431 1432 // check if any of the monitored apps are already installed 1433 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1434 1435 @Override 1436 protected Set<String> doInBackground(Void... unused) { 1437 Set<String> installedPackages = new HashSet<String>(); 1438 PackageManager pm = mContext.getPackageManager(); 1439 for (String name : sGoogleApps) { 1440 try { 1441 pm.getPackageInfo(name, 1442 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1443 installedPackages.add(name); 1444 } catch (PackageManager.NameNotFoundException e) { 1445 // package not found 1446 } 1447 } 1448 return installedPackages; 1449 } 1450 1451 // Executes on the UI thread 1452 @Override 1453 protected void onPostExecute(Set<String> installedPackages) { 1454 if (mWebViewCore != null) { 1455 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1456 } 1457 } 1458 }; 1459 task.execute(); 1460 } 1461 1462 void updateMultiTouchSupport(Context context) { 1463 mZoomManager.updateMultiTouchSupport(context); 1464 } 1465 1466 private void init() { 1467 OnTrimMemoryListener.init(getContext()); 1468 sDisableNavcache = nativeDisableNavcache(); 1469 setWillNotDraw(false); 1470 setFocusable(true); 1471 setFocusableInTouchMode(true); 1472 setClickable(true); 1473 setLongClickable(true); 1474 1475 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1476 int slop = configuration.getScaledTouchSlop(); 1477 mTouchSlopSquare = slop * slop; 1478 slop = configuration.getScaledDoubleTapSlop(); 1479 mDoubleTapSlopSquare = slop * slop; 1480 final float density = getContext().getResources().getDisplayMetrics().density; 1481 // use one line height, 16 based on our current default font, for how 1482 // far we allow a touch be away from the edge of a link 1483 mNavSlop = (int) (16 * density); 1484 mZoomManager.init(density); 1485 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1486 1487 // Compute the inverse of the density squared. 1488 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1489 1490 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1491 mOverflingDistance = configuration.getScaledOverflingDistance(); 1492 1493 setScrollBarStyle(super.getScrollBarStyle()); 1494 // Initially use a size of two, since the user is likely to only hold 1495 // down two keys at a time (shift + another key) 1496 mKeysPressed = new Vector<Integer>(2); 1497 mHTML5VideoViewProxy = null ; 1498 } 1499 1500 @Override 1501 public boolean shouldDelayChildPressedState() { 1502 return true; 1503 } 1504 1505 /** 1506 * Adds accessibility APIs to JavaScript. 1507 * 1508 * Note: This method is responsible to performing the necessary 1509 * check if the accessibility APIs should be exposed. 1510 */ 1511 private void addAccessibilityApisToJavaScript() { 1512 if (AccessibilityManager.getInstance(mContext).isEnabled() 1513 && getSettings().getJavaScriptEnabled()) { 1514 // exposing the TTS for now ... 1515 final Context ctx = getContext(); 1516 if (ctx != null) { 1517 final String packageName = ctx.getPackageName(); 1518 if (packageName != null) { 1519 mTextToSpeech = new TextToSpeech(getContext(), null, null, 1520 packageName + ".**webview**", true); 1521 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1522 } 1523 } 1524 } 1525 } 1526 1527 /** 1528 * Removes accessibility APIs from JavaScript. 1529 */ 1530 private void removeAccessibilityApisFromJavaScript() { 1531 // exposing the TTS for now ... 1532 if (mTextToSpeech != null) { 1533 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1534 mTextToSpeech.shutdown(); 1535 mTextToSpeech = null; 1536 } 1537 } 1538 1539 @Override 1540 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 1541 super.onInitializeAccessibilityNodeInfo(info); 1542 info.setScrollable(isScrollableForAccessibility()); 1543 } 1544 1545 @Override 1546 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 1547 super.onInitializeAccessibilityEvent(event); 1548 event.setScrollable(isScrollableForAccessibility()); 1549 event.setScrollX(mScrollX); 1550 event.setScrollY(mScrollY); 1551 final int convertedContentWidth = contentToViewX(getContentWidth()); 1552 final int adjustedViewWidth = getWidth() - mPaddingLeft - mPaddingRight; 1553 event.setMaxScrollX(Math.max(convertedContentWidth - adjustedViewWidth, 0)); 1554 final int convertedContentHeight = contentToViewY(getContentHeight()); 1555 final int adjustedViewHeight = getHeight() - mPaddingTop - mPaddingBottom; 1556 event.setMaxScrollY(Math.max(convertedContentHeight - adjustedViewHeight, 0)); 1557 } 1558 1559 private boolean isScrollableForAccessibility() { 1560 return (contentToViewX(getContentWidth()) > getWidth() - mPaddingLeft - mPaddingRight 1561 || contentToViewY(getContentHeight()) > getHeight() - mPaddingTop - mPaddingBottom); 1562 } 1563 1564 @Override 1565 public void setOverScrollMode(int mode) { 1566 super.setOverScrollMode(mode); 1567 if (mode != OVER_SCROLL_NEVER) { 1568 if (mOverScrollGlow == null) { 1569 mOverScrollGlow = new OverScrollGlow(this); 1570 } 1571 } else { 1572 mOverScrollGlow = null; 1573 } 1574 } 1575 1576 /* package */ void adjustDefaultZoomDensity(int zoomDensity) { 1577 final float density = mContext.getResources().getDisplayMetrics().density 1578 * 100 / zoomDensity; 1579 updateDefaultZoomDensity(density); 1580 } 1581 1582 /* package */ void updateDefaultZoomDensity(float density) { 1583 mNavSlop = (int) (16 * density); 1584 mZoomManager.updateDefaultZoomDensity(density); 1585 } 1586 1587 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1588 String password, final Message resumeMsg) { 1589 boolean rVal = false; 1590 if (resumeMsg == null) { 1591 // null resumeMsg implies saving password silently 1592 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1593 } else { 1594 final Message remember = mPrivateHandler.obtainMessage( 1595 REMEMBER_PASSWORD); 1596 remember.getData().putString("host", schemePlusHost); 1597 remember.getData().putString("username", username); 1598 remember.getData().putString("password", password); 1599 remember.obj = resumeMsg; 1600 1601 final Message neverRemember = mPrivateHandler.obtainMessage( 1602 NEVER_REMEMBER_PASSWORD); 1603 neverRemember.getData().putString("host", schemePlusHost); 1604 neverRemember.getData().putString("username", username); 1605 neverRemember.getData().putString("password", password); 1606 neverRemember.obj = resumeMsg; 1607 1608 new AlertDialog.Builder(getContext()) 1609 .setTitle(com.android.internal.R.string.save_password_label) 1610 .setMessage(com.android.internal.R.string.save_password_message) 1611 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1612 new DialogInterface.OnClickListener() { 1613 @Override 1614 public void onClick(DialogInterface dialog, int which) { 1615 resumeMsg.sendToTarget(); 1616 } 1617 }) 1618 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1619 new DialogInterface.OnClickListener() { 1620 @Override 1621 public void onClick(DialogInterface dialog, int which) { 1622 remember.sendToTarget(); 1623 } 1624 }) 1625 .setNegativeButton(com.android.internal.R.string.save_password_never, 1626 new DialogInterface.OnClickListener() { 1627 @Override 1628 public void onClick(DialogInterface dialog, int which) { 1629 neverRemember.sendToTarget(); 1630 } 1631 }) 1632 .setOnCancelListener(new OnCancelListener() { 1633 @Override 1634 public void onCancel(DialogInterface dialog) { 1635 resumeMsg.sendToTarget(); 1636 } 1637 }).show(); 1638 // Return true so that WebViewCore will pause while the dialog is 1639 // up. 1640 rVal = true; 1641 } 1642 return rVal; 1643 } 1644 1645 @Override 1646 public void setScrollBarStyle(int style) { 1647 if (style == View.SCROLLBARS_INSIDE_INSET 1648 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1649 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1650 } else { 1651 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1652 } 1653 super.setScrollBarStyle(style); 1654 } 1655 1656 /** 1657 * Specify whether the horizontal scrollbar has overlay style. 1658 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1659 */ 1660 public void setHorizontalScrollbarOverlay(boolean overlay) { 1661 checkThread(); 1662 mOverlayHorizontalScrollbar = overlay; 1663 } 1664 1665 /** 1666 * Specify whether the vertical scrollbar has overlay style. 1667 * @param overlay TRUE if vertical scrollbar should have overlay style. 1668 */ 1669 public void setVerticalScrollbarOverlay(boolean overlay) { 1670 checkThread(); 1671 mOverlayVerticalScrollbar = overlay; 1672 } 1673 1674 /** 1675 * Return whether horizontal scrollbar has overlay style 1676 * @return TRUE if horizontal scrollbar has overlay style. 1677 */ 1678 public boolean overlayHorizontalScrollbar() { 1679 checkThread(); 1680 return mOverlayHorizontalScrollbar; 1681 } 1682 1683 /** 1684 * Return whether vertical scrollbar has overlay style 1685 * @return TRUE if vertical scrollbar has overlay style. 1686 */ 1687 public boolean overlayVerticalScrollbar() { 1688 checkThread(); 1689 return mOverlayVerticalScrollbar; 1690 } 1691 1692 /* 1693 * Return the width of the view where the content of WebView should render 1694 * to. 1695 * Note: this can be called from WebCoreThread. 1696 */ 1697 /* package */ int getViewWidth() { 1698 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1699 return getWidth(); 1700 } else { 1701 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1702 } 1703 } 1704 1705 /** 1706 * returns the height of the titlebarview (if any). Does not care about 1707 * scrolling 1708 * @hide 1709 */ 1710 protected int getTitleHeight() { 1711 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1712 } 1713 1714 /** 1715 * Return the amount of the titlebarview (if any) that is visible 1716 * 1717 * @deprecated This method is now obsolete. 1718 */ 1719 @Deprecated 1720 public int getVisibleTitleHeight() { 1721 checkThread(); 1722 return getVisibleTitleHeightImpl(); 1723 } 1724 1725 private int getVisibleTitleHeightImpl() { 1726 // need to restrict mScrollY due to over scroll 1727 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 1728 getOverlappingActionModeHeight()); 1729 } 1730 1731 private int mCachedOverlappingActionModeHeight = -1; 1732 1733 private int getOverlappingActionModeHeight() { 1734 if (mFindCallback == null) { 1735 return 0; 1736 } 1737 if (mCachedOverlappingActionModeHeight < 0) { 1738 getGlobalVisibleRect(mGlobalVisibleRect, mGlobalVisibleOffset); 1739 mCachedOverlappingActionModeHeight = Math.max(0, 1740 mFindCallback.getActionModeGlobalBottom() - mGlobalVisibleRect.top); 1741 } 1742 return mCachedOverlappingActionModeHeight; 1743 } 1744 1745 /* 1746 * Return the height of the view where the content of WebView should render 1747 * to. Note that this excludes mTitleBar, if there is one. 1748 * Note: this can be called from WebCoreThread. 1749 */ 1750 /* package */ int getViewHeight() { 1751 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1752 } 1753 1754 int getViewHeightWithTitle() { 1755 int height = getHeight(); 1756 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1757 height -= getHorizontalScrollbarHeight(); 1758 } 1759 return height; 1760 } 1761 1762 /** 1763 * @return The SSL certificate for the main top-level page or null if 1764 * there is no certificate (the site is not secure). 1765 */ 1766 public SslCertificate getCertificate() { 1767 checkThread(); 1768 return mCertificate; 1769 } 1770 1771 /** 1772 * Sets the SSL certificate for the main top-level page. 1773 */ 1774 public void setCertificate(SslCertificate certificate) { 1775 checkThread(); 1776 if (DebugFlags.WEB_VIEW) { 1777 Log.v(LOGTAG, "setCertificate=" + certificate); 1778 } 1779 // here, the certificate can be null (if the site is not secure) 1780 mCertificate = certificate; 1781 } 1782 1783 //------------------------------------------------------------------------- 1784 // Methods called by activity 1785 //------------------------------------------------------------------------- 1786 1787 /** 1788 * Save the username and password for a particular host in the WebView's 1789 * internal database. 1790 * @param host The host that required the credentials. 1791 * @param username The username for the given host. 1792 * @param password The password for the given host. 1793 */ 1794 public void savePassword(String host, String username, String password) { 1795 checkThread(); 1796 mDatabase.setUsernamePassword(host, username, password); 1797 } 1798 1799 /** 1800 * Set the HTTP authentication credentials for a given host and realm. 1801 * 1802 * @param host The host for the credentials. 1803 * @param realm The realm for the credentials. 1804 * @param username The username for the password. If it is null, it means 1805 * password can't be saved. 1806 * @param password The password 1807 */ 1808 public void setHttpAuthUsernamePassword(String host, String realm, 1809 String username, String password) { 1810 checkThread(); 1811 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1812 } 1813 1814 /** 1815 * Retrieve the HTTP authentication username and password for a given 1816 * host & realm pair 1817 * 1818 * @param host The host for which the credentials apply. 1819 * @param realm The realm for which the credentials apply. 1820 * @return String[] if found, String[0] is username, which can be null and 1821 * String[1] is password. Return null if it can't find anything. 1822 */ 1823 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1824 checkThread(); 1825 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1826 } 1827 1828 /** 1829 * Remove Find or Select ActionModes, if active. 1830 */ 1831 private void clearActionModes() { 1832 if (mSelectCallback != null) { 1833 mSelectCallback.finish(); 1834 } 1835 if (mFindCallback != null) { 1836 mFindCallback.finish(); 1837 } 1838 } 1839 1840 /** 1841 * Called to clear state when moving from one page to another, or changing 1842 * in some other way that makes elements associated with the current page 1843 * (such as WebTextView or ActionModes) no longer relevant. 1844 */ 1845 private void clearHelpers() { 1846 clearTextEntry(); 1847 clearActionModes(); 1848 dismissFullScreenMode(); 1849 cancelSelectDialog(); 1850 } 1851 1852 private void cancelSelectDialog() { 1853 if (mListBoxDialog != null) { 1854 mListBoxDialog.cancel(); 1855 mListBoxDialog = null; 1856 } 1857 } 1858 1859 /** 1860 * Destroy the internal state of the WebView. This method should be called 1861 * after the WebView has been removed from the view system. No other 1862 * methods may be called on a WebView after destroy. 1863 */ 1864 public void destroy() { 1865 checkThread(); 1866 destroyImpl(); 1867 } 1868 1869 private void destroyImpl() { 1870 clearHelpers(); 1871 if (mListBoxDialog != null) { 1872 mListBoxDialog.dismiss(); 1873 mListBoxDialog = null; 1874 } 1875 // remove so that it doesn't cause events 1876 if (mWebTextView != null) { 1877 mWebTextView.remove(); 1878 mWebTextView = null; 1879 } 1880 if (mNativeClass != 0) nativeStopGL(); 1881 if (mWebViewCore != null) { 1882 // Set the handlers to null before destroying WebViewCore so no 1883 // more messages will be posted. 1884 mCallbackProxy.setWebViewClient(null); 1885 mCallbackProxy.setWebChromeClient(null); 1886 // Tell WebViewCore to destroy itself 1887 synchronized (this) { 1888 WebViewCore webViewCore = mWebViewCore; 1889 mWebViewCore = null; // prevent using partial webViewCore 1890 webViewCore.destroy(); 1891 } 1892 // Remove any pending messages that might not be serviced yet. 1893 mPrivateHandler.removeCallbacksAndMessages(null); 1894 mCallbackProxy.removeCallbacksAndMessages(null); 1895 // Wake up the WebCore thread just in case it is waiting for a 1896 // JavaScript dialog. 1897 synchronized (mCallbackProxy) { 1898 mCallbackProxy.notify(); 1899 } 1900 } 1901 if (mNativeClass != 0) { 1902 nativeDestroy(); 1903 mNativeClass = 0; 1904 } 1905 } 1906 1907 /** 1908 * Enables platform notifications of data state and proxy changes. 1909 * Notifications are enabled by default. 1910 * 1911 * @deprecated This method is now obsolete. 1912 */ 1913 @Deprecated 1914 public static void enablePlatformNotifications() { 1915 checkThread(); 1916 synchronized (WebView.class) { 1917 Network.enablePlatformNotifications(); 1918 sNotificationsEnabled = true; 1919 Context context = JniUtil.getContext(); 1920 if (context != null) 1921 setupProxyListener(context); 1922 } 1923 } 1924 1925 /** 1926 * Disables platform notifications of data state and proxy changes. 1927 * Notifications are enabled by default. 1928 * 1929 * @deprecated This method is now obsolete. 1930 */ 1931 @Deprecated 1932 public static void disablePlatformNotifications() { 1933 checkThread(); 1934 synchronized (WebView.class) { 1935 Network.disablePlatformNotifications(); 1936 sNotificationsEnabled = false; 1937 Context context = JniUtil.getContext(); 1938 if (context != null) 1939 disableProxyListener(context); 1940 } 1941 } 1942 1943 /** 1944 * Sets JavaScript engine flags. 1945 * 1946 * @param flags JS engine flags in a String 1947 * 1948 * @hide This is an implementation detail. 1949 */ 1950 public void setJsFlags(String flags) { 1951 checkThread(); 1952 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1953 } 1954 1955 /** 1956 * Inform WebView of the network state. This is used to set 1957 * the JavaScript property window.navigator.isOnline and 1958 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1959 * @param networkUp boolean indicating if network is available 1960 */ 1961 public void setNetworkAvailable(boolean networkUp) { 1962 checkThread(); 1963 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1964 networkUp ? 1 : 0, 0); 1965 } 1966 1967 /** 1968 * Inform WebView about the current network type. 1969 * {@hide} 1970 */ 1971 public void setNetworkType(String type, String subtype) { 1972 checkThread(); 1973 Map<String, String> map = new HashMap<String, String>(); 1974 map.put("type", type); 1975 map.put("subtype", subtype); 1976 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1977 } 1978 /** 1979 * Save the state of this WebView used in 1980 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1981 * method no longer stores the display data for this WebView. The previous 1982 * behavior could potentially leak files if {@link #restoreState} was never 1983 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1984 * and restoring the display data. 1985 * @param outState The Bundle to store the WebView state. 1986 * @return The same copy of the back/forward list used to save the state. If 1987 * saveState fails, the returned list will be null. 1988 * @see #savePicture 1989 * @see #restorePicture 1990 */ 1991 public WebBackForwardList saveState(Bundle outState) { 1992 checkThread(); 1993 if (outState == null) { 1994 return null; 1995 } 1996 // We grab a copy of the back/forward list because a client of WebView 1997 // may have invalidated the history list by calling clearHistory. 1998 WebBackForwardList list = copyBackForwardList(); 1999 final int currentIndex = list.getCurrentIndex(); 2000 final int size = list.getSize(); 2001 // We should fail saving the state if the list is empty or the index is 2002 // not in a valid range. 2003 if (currentIndex < 0 || currentIndex >= size || size == 0) { 2004 return null; 2005 } 2006 outState.putInt("index", currentIndex); 2007 // FIXME: This should just be a byte[][] instead of ArrayList but 2008 // Parcel.java does not have the code to handle multi-dimensional 2009 // arrays. 2010 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 2011 for (int i = 0; i < size; i++) { 2012 WebHistoryItem item = list.getItemAtIndex(i); 2013 if (null == item) { 2014 // FIXME: this shouldn't happen 2015 // need to determine how item got set to null 2016 Log.w(LOGTAG, "saveState: Unexpected null history item."); 2017 return null; 2018 } 2019 byte[] data = item.getFlattenedData(); 2020 if (data == null) { 2021 // It would be very odd to not have any data for a given history 2022 // item. And we will fail to rebuild the history list without 2023 // flattened data. 2024 return null; 2025 } 2026 history.add(data); 2027 } 2028 outState.putSerializable("history", history); 2029 if (mCertificate != null) { 2030 outState.putBundle("certificate", 2031 SslCertificate.saveState(mCertificate)); 2032 } 2033 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 2034 mZoomManager.saveZoomState(outState); 2035 return list; 2036 } 2037 2038 /** 2039 * Save the current display data to the Bundle given. Used in conjunction 2040 * with {@link #saveState}. 2041 * @param b A Bundle to store the display data. 2042 * @param dest The file to store the serialized picture data. Will be 2043 * overwritten with this WebView's picture data. 2044 * @return True if the picture was successfully saved. 2045 * @deprecated This method is now obsolete. 2046 */ 2047 @Deprecated 2048 public boolean savePicture(Bundle b, final File dest) { 2049 checkThread(); 2050 if (dest == null || b == null) { 2051 return false; 2052 } 2053 final Picture p = capturePicture(); 2054 // Use a temporary file while writing to ensure the destination file 2055 // contains valid data. 2056 final File temp = new File(dest.getPath() + ".writing"); 2057 new Thread(new Runnable() { 2058 @Override 2059 public void run() { 2060 FileOutputStream out = null; 2061 try { 2062 out = new FileOutputStream(temp); 2063 p.writeToStream(out); 2064 // Writing the picture succeeded, rename the temporary file 2065 // to the destination. 2066 temp.renameTo(dest); 2067 } catch (Exception e) { 2068 // too late to do anything about it. 2069 } finally { 2070 if (out != null) { 2071 try { 2072 out.close(); 2073 } catch (Exception e) { 2074 // Can't do anything about that 2075 } 2076 } 2077 temp.delete(); 2078 } 2079 } 2080 }).start(); 2081 // now update the bundle 2082 b.putInt("scrollX", mScrollX); 2083 b.putInt("scrollY", mScrollY); 2084 mZoomManager.saveZoomState(b); 2085 return true; 2086 } 2087 2088 private void restoreHistoryPictureFields(Picture p, Bundle b) { 2089 int sx = b.getInt("scrollX", 0); 2090 int sy = b.getInt("scrollY", 0); 2091 2092 mDrawHistory = true; 2093 mHistoryPicture = p; 2094 2095 mScrollX = sx; 2096 mScrollY = sy; 2097 mZoomManager.restoreZoomState(b); 2098 final float scale = mZoomManager.getScale(); 2099 mHistoryWidth = Math.round(p.getWidth() * scale); 2100 mHistoryHeight = Math.round(p.getHeight() * scale); 2101 2102 invalidate(); 2103 } 2104 2105 /** 2106 * Restore the display data that was save in {@link #savePicture}. Used in 2107 * conjunction with {@link #restoreState}. 2108 * 2109 * Note that this will not work if the WebView is hardware accelerated. 2110 * @param b A Bundle containing the saved display data. 2111 * @param src The file where the picture data was stored. 2112 * @return True if the picture was successfully restored. 2113 * @deprecated This method is now obsolete. 2114 */ 2115 @Deprecated 2116 public boolean restorePicture(Bundle b, File src) { 2117 checkThread(); 2118 if (src == null || b == null) { 2119 return false; 2120 } 2121 if (!src.exists()) { 2122 return false; 2123 } 2124 try { 2125 final FileInputStream in = new FileInputStream(src); 2126 final Bundle copy = new Bundle(b); 2127 new Thread(new Runnable() { 2128 @Override 2129 public void run() { 2130 try { 2131 final Picture p = Picture.createFromStream(in); 2132 if (p != null) { 2133 // Post a runnable on the main thread to update the 2134 // history picture fields. 2135 mPrivateHandler.post(new Runnable() { 2136 @Override 2137 public void run() { 2138 restoreHistoryPictureFields(p, copy); 2139 } 2140 }); 2141 } 2142 } finally { 2143 try { 2144 in.close(); 2145 } catch (Exception e) { 2146 // Nothing we can do now. 2147 } 2148 } 2149 } 2150 }).start(); 2151 } catch (FileNotFoundException e){ 2152 e.printStackTrace(); 2153 } 2154 return true; 2155 } 2156 2157 /** 2158 * Saves the view data to the output stream. The output is highly 2159 * version specific, and may not be able to be loaded by newer versions 2160 * of WebView. 2161 * @param stream The {@link OutputStream} to save to 2162 * @return True if saved successfully 2163 * @hide 2164 */ 2165 public boolean saveViewState(OutputStream stream) { 2166 try { 2167 return ViewStateSerializer.serializeViewState(stream, this); 2168 } catch (IOException e) { 2169 Log.w(LOGTAG, "Failed to saveViewState", e); 2170 } 2171 return false; 2172 } 2173 2174 /** 2175 * Loads the view data from the input stream. See 2176 * {@link #saveViewState(OutputStream)} for more information. 2177 * @param stream The {@link InputStream} to load from 2178 * @return True if loaded successfully 2179 * @hide 2180 */ 2181 public boolean loadViewState(InputStream stream) { 2182 try { 2183 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 2184 mBlockWebkitViewMessages = true; 2185 setNewPicture(mLoadedPicture, true); 2186 mLoadedPicture.mViewState = null; 2187 return true; 2188 } catch (IOException e) { 2189 Log.w(LOGTAG, "Failed to loadViewState", e); 2190 } 2191 return false; 2192 } 2193 2194 /** 2195 * Clears the view state set with {@link #loadViewState(InputStream)}. 2196 * This WebView will then switch to showing the content from webkit 2197 * @hide 2198 */ 2199 public void clearViewState() { 2200 mBlockWebkitViewMessages = false; 2201 mLoadedPicture = null; 2202 invalidate(); 2203 } 2204 2205 /** 2206 * Restore the state of this WebView from the given map used in 2207 * {@link android.app.Activity#onRestoreInstanceState}. This method should 2208 * be called to restore the state of the WebView before using the object. If 2209 * it is called after the WebView has had a chance to build state (load 2210 * pages, create a back/forward list, etc.) there may be undesirable 2211 * side-effects. Please note that this method no longer restores the 2212 * display data for this WebView. See {@link #savePicture} and {@link 2213 * #restorePicture} for saving and restoring the display data. 2214 * @param inState The incoming Bundle of state. 2215 * @return The restored back/forward list or null if restoreState failed. 2216 * @see #savePicture 2217 * @see #restorePicture 2218 */ 2219 public WebBackForwardList restoreState(Bundle inState) { 2220 checkThread(); 2221 WebBackForwardList returnList = null; 2222 if (inState == null) { 2223 return returnList; 2224 } 2225 if (inState.containsKey("index") && inState.containsKey("history")) { 2226 mCertificate = SslCertificate.restoreState( 2227 inState.getBundle("certificate")); 2228 2229 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 2230 final int index = inState.getInt("index"); 2231 // We can't use a clone of the list because we need to modify the 2232 // shared copy, so synchronize instead to prevent concurrent 2233 // modifications. 2234 synchronized (list) { 2235 final List<byte[]> history = 2236 (List<byte[]>) inState.getSerializable("history"); 2237 final int size = history.size(); 2238 // Check the index bounds so we don't crash in native code while 2239 // restoring the history index. 2240 if (index < 0 || index >= size) { 2241 return null; 2242 } 2243 for (int i = 0; i < size; i++) { 2244 byte[] data = history.remove(0); 2245 if (data == null) { 2246 // If we somehow have null data, we cannot reconstruct 2247 // the item and thus our history list cannot be rebuilt. 2248 return null; 2249 } 2250 WebHistoryItem item = new WebHistoryItem(data); 2251 list.addHistoryItem(item); 2252 } 2253 // Grab the most recent copy to return to the caller. 2254 returnList = copyBackForwardList(); 2255 // Update the copy to have the correct index. 2256 returnList.setCurrentIndex(index); 2257 } 2258 // Restore private browsing setting. 2259 if (inState.getBoolean("privateBrowsingEnabled")) { 2260 getSettings().setPrivateBrowsingEnabled(true); 2261 } 2262 mZoomManager.restoreZoomState(inState); 2263 // Remove all pending messages because we are restoring previous 2264 // state. 2265 mWebViewCore.removeMessages(); 2266 // Send a restore state message. 2267 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 2268 } 2269 return returnList; 2270 } 2271 2272 /** 2273 * Load the given URL with the specified additional HTTP headers. 2274 * @param url The URL of the resource to load. 2275 * @param additionalHttpHeaders The additional headers to be used in the 2276 * HTTP request for this URL, specified as a map from name to 2277 * value. Note that if this map contains any of the headers 2278 * that are set by default by the WebView, such as those 2279 * controlling caching, accept types or the User-Agent, their 2280 * values may be overriden by the WebView's defaults. 2281 */ 2282 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 2283 checkThread(); 2284 loadUrlImpl(url, additionalHttpHeaders); 2285 } 2286 2287 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 2288 switchOutDrawHistory(); 2289 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 2290 arg.mUrl = url; 2291 arg.mExtraHeaders = extraHeaders; 2292 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 2293 clearHelpers(); 2294 } 2295 2296 /** 2297 * Load the given URL. 2298 * @param url The URL of the resource to load. 2299 */ 2300 public void loadUrl(String url) { 2301 checkThread(); 2302 loadUrlImpl(url); 2303 } 2304 2305 private void loadUrlImpl(String url) { 2306 if (url == null) { 2307 return; 2308 } 2309 loadUrlImpl(url, null); 2310 } 2311 2312 /** 2313 * Load the url with postData using "POST" method into the WebView. If url 2314 * is not a network url, it will be loaded with {link 2315 * {@link #loadUrl(String)} instead. 2316 * 2317 * @param url The url of the resource to load. 2318 * @param postData The data will be passed to "POST" request. 2319 */ 2320 public void postUrl(String url, byte[] postData) { 2321 checkThread(); 2322 if (URLUtil.isNetworkUrl(url)) { 2323 switchOutDrawHistory(); 2324 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2325 arg.mUrl = url; 2326 arg.mPostData = postData; 2327 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2328 clearHelpers(); 2329 } else { 2330 loadUrlImpl(url); 2331 } 2332 } 2333 2334 /** 2335 * Load the given data into the WebView using a 'data' scheme URL. 2336 * <p> 2337 * Note that JavaScript's same origin policy means that script running in a 2338 * page loaded using this method will be unable to access content loaded 2339 * using any scheme other than 'data', including 'http(s)'. To avoid this 2340 * restriction, use {@link 2341 * #loadDataWithBaseURL(String,String,String,String,String) 2342 * loadDataWithBaseURL()} with an appropriate base URL. 2343 * <p> 2344 * If the value of the encoding parameter is 'base64', then the data must 2345 * be encoded as base64. Otherwise, the data must use ASCII encoding for 2346 * octets inside the range of safe URL characters and use the standard %xx 2347 * hex encoding of URLs for octets outside that range. For example, 2348 * '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively. 2349 * <p> 2350 * The 'data' scheme URL formed by this method uses the default US-ASCII 2351 * charset. If you need need to set a different charset, you should form a 2352 * 'data' scheme URL which explicitly specifies a charset parameter in the 2353 * mediatype portion of the URL and call {@link #loadUrl(String)} instead. 2354 * Note that the charset obtained from the mediatype portion of a data URL 2355 * always overrides that specified in the HTML or XML document itself. 2356 * @param data A String of data in the given encoding. 2357 * @param mimeType The MIME type of the data, e.g. 'text/html'. 2358 * @param encoding The encoding of the data. 2359 */ 2360 public void loadData(String data, String mimeType, String encoding) { 2361 checkThread(); 2362 loadDataImpl(data, mimeType, encoding); 2363 } 2364 2365 private void loadDataImpl(String data, String mimeType, String encoding) { 2366 StringBuilder dataUrl = new StringBuilder("data:"); 2367 dataUrl.append(mimeType); 2368 if ("base64".equals(encoding)) { 2369 dataUrl.append(";base64"); 2370 } 2371 dataUrl.append(","); 2372 dataUrl.append(data); 2373 loadUrlImpl(dataUrl.toString()); 2374 } 2375 2376 /** 2377 * Load the given data into the WebView, using baseUrl as the base URL for 2378 * the content. The base URL is used both to resolve relative URLs and when 2379 * applying JavaScript's same origin policy. The historyUrl is used for the 2380 * history entry. 2381 * <p> 2382 * Note that content specified in this way can access local device files 2383 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2384 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2385 * <p> 2386 * If the base URL uses the data scheme, this method is equivalent to 2387 * calling {@link #loadData(String,String,String) loadData()} and the 2388 * historyUrl is ignored. 2389 * @param baseUrl URL to use as the page's base URL. If null defaults to 2390 * 'about:blank' 2391 * @param data A String of data in the given encoding. 2392 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2393 * defaults to 'text/html'. 2394 * @param encoding The encoding of the data. 2395 * @param historyUrl URL to use as the history entry, if null defaults to 2396 * 'about:blank'. 2397 */ 2398 public void loadDataWithBaseURL(String baseUrl, String data, 2399 String mimeType, String encoding, String historyUrl) { 2400 checkThread(); 2401 2402 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2403 loadDataImpl(data, mimeType, encoding); 2404 return; 2405 } 2406 switchOutDrawHistory(); 2407 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2408 arg.mBaseUrl = baseUrl; 2409 arg.mData = data; 2410 arg.mMimeType = mimeType; 2411 arg.mEncoding = encoding; 2412 arg.mHistoryUrl = historyUrl; 2413 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2414 clearHelpers(); 2415 } 2416 2417 /** 2418 * Saves the current view as a web archive. 2419 * 2420 * @param filename The filename where the archive should be placed. 2421 */ 2422 public void saveWebArchive(String filename) { 2423 checkThread(); 2424 saveWebArchiveImpl(filename, false, null); 2425 } 2426 2427 /* package */ static class SaveWebArchiveMessage { 2428 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2429 mBasename = basename; 2430 mAutoname = autoname; 2431 mCallback = callback; 2432 } 2433 2434 /* package */ final String mBasename; 2435 /* package */ final boolean mAutoname; 2436 /* package */ final ValueCallback<String> mCallback; 2437 /* package */ String mResultFile; 2438 } 2439 2440 /** 2441 * Saves the current view as a web archive. 2442 * 2443 * @param basename The filename where the archive should be placed. 2444 * @param autoname If false, takes basename to be a file. If true, basename 2445 * is assumed to be a directory in which a filename will be 2446 * chosen according to the url of the current page. 2447 * @param callback Called after the web archive has been saved. The 2448 * parameter for onReceiveValue will either be the filename 2449 * under which the file was saved, or null if saving the 2450 * file failed. 2451 */ 2452 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2453 checkThread(); 2454 saveWebArchiveImpl(basename, autoname, callback); 2455 } 2456 2457 private void saveWebArchiveImpl(String basename, boolean autoname, 2458 ValueCallback<String> callback) { 2459 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2460 new SaveWebArchiveMessage(basename, autoname, callback)); 2461 } 2462 2463 /** 2464 * Stop the current load. 2465 */ 2466 public void stopLoading() { 2467 checkThread(); 2468 // TODO: should we clear all the messages in the queue before sending 2469 // STOP_LOADING? 2470 switchOutDrawHistory(); 2471 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2472 } 2473 2474 /** 2475 * Reload the current url. 2476 */ 2477 public void reload() { 2478 checkThread(); 2479 clearHelpers(); 2480 switchOutDrawHistory(); 2481 mWebViewCore.sendMessage(EventHub.RELOAD); 2482 } 2483 2484 /** 2485 * Return true if this WebView has a back history item. 2486 * @return True iff this WebView has a back history item. 2487 */ 2488 public boolean canGoBack() { 2489 checkThread(); 2490 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2491 synchronized (l) { 2492 if (l.getClearPending()) { 2493 return false; 2494 } else { 2495 return l.getCurrentIndex() > 0; 2496 } 2497 } 2498 } 2499 2500 /** 2501 * Go back in the history of this WebView. 2502 */ 2503 public void goBack() { 2504 checkThread(); 2505 goBackOrForwardImpl(-1); 2506 } 2507 2508 /** 2509 * Return true if this WebView has a forward history item. 2510 * @return True iff this Webview has a forward history item. 2511 */ 2512 public boolean canGoForward() { 2513 checkThread(); 2514 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2515 synchronized (l) { 2516 if (l.getClearPending()) { 2517 return false; 2518 } else { 2519 return l.getCurrentIndex() < l.getSize() - 1; 2520 } 2521 } 2522 } 2523 2524 /** 2525 * Go forward in the history of this WebView. 2526 */ 2527 public void goForward() { 2528 checkThread(); 2529 goBackOrForwardImpl(1); 2530 } 2531 2532 /** 2533 * Return true if the page can go back or forward the given 2534 * number of steps. 2535 * @param steps The negative or positive number of steps to move the 2536 * history. 2537 */ 2538 public boolean canGoBackOrForward(int steps) { 2539 checkThread(); 2540 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2541 synchronized (l) { 2542 if (l.getClearPending()) { 2543 return false; 2544 } else { 2545 int newIndex = l.getCurrentIndex() + steps; 2546 return newIndex >= 0 && newIndex < l.getSize(); 2547 } 2548 } 2549 } 2550 2551 /** 2552 * Go to the history item that is the number of steps away from 2553 * the current item. Steps is negative if backward and positive 2554 * if forward. 2555 * @param steps The number of steps to take back or forward in the back 2556 * forward list. 2557 */ 2558 public void goBackOrForward(int steps) { 2559 checkThread(); 2560 goBackOrForwardImpl(steps); 2561 } 2562 2563 private void goBackOrForwardImpl(int steps) { 2564 goBackOrForward(steps, false); 2565 } 2566 2567 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2568 if (steps != 0) { 2569 clearHelpers(); 2570 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2571 ignoreSnapshot ? 1 : 0); 2572 } 2573 } 2574 2575 /** 2576 * Returns true if private browsing is enabled in this WebView. 2577 */ 2578 public boolean isPrivateBrowsingEnabled() { 2579 checkThread(); 2580 return getSettings().isPrivateBrowsingEnabled(); 2581 } 2582 2583 private void startPrivateBrowsing() { 2584 getSettings().setPrivateBrowsingEnabled(true); 2585 } 2586 2587 private boolean extendScroll(int y) { 2588 int finalY = mScroller.getFinalY(); 2589 int newY = pinLocY(finalY + y); 2590 if (newY == finalY) return false; 2591 mScroller.setFinalY(newY); 2592 mScroller.extendDuration(computeDuration(0, y)); 2593 return true; 2594 } 2595 2596 /** 2597 * Scroll the contents of the view up by half the view size 2598 * @param top true to jump to the top of the page 2599 * @return true if the page was scrolled 2600 */ 2601 public boolean pageUp(boolean top) { 2602 checkThread(); 2603 if (mNativeClass == 0) { 2604 return false; 2605 } 2606 nativeClearCursor(); // start next trackball movement from page edge 2607 if (top) { 2608 // go to the top of the document 2609 return pinScrollTo(mScrollX, 0, true, 0); 2610 } 2611 // Page up 2612 int h = getHeight(); 2613 int y; 2614 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2615 y = -h + PAGE_SCROLL_OVERLAP; 2616 } else { 2617 y = -h / 2; 2618 } 2619 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2620 : extendScroll(y); 2621 } 2622 2623 /** 2624 * Scroll the contents of the view down by half the page size 2625 * @param bottom true to jump to bottom of page 2626 * @return true if the page was scrolled 2627 */ 2628 public boolean pageDown(boolean bottom) { 2629 checkThread(); 2630 if (mNativeClass == 0) { 2631 return false; 2632 } 2633 nativeClearCursor(); // start next trackball movement from page edge 2634 if (bottom) { 2635 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2636 } 2637 // Page down. 2638 int h = getHeight(); 2639 int y; 2640 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2641 y = h - PAGE_SCROLL_OVERLAP; 2642 } else { 2643 y = h / 2; 2644 } 2645 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2646 : extendScroll(y); 2647 } 2648 2649 /** 2650 * Clear the view so that onDraw() will draw nothing but white background, 2651 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2652 */ 2653 public void clearView() { 2654 checkThread(); 2655 mContentWidth = 0; 2656 mContentHeight = 0; 2657 setBaseLayer(0, null, false, false); 2658 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2659 } 2660 2661 /** 2662 * Return a new picture that captures the current display of the webview. 2663 * This is a copy of the display, and will be unaffected if the webview 2664 * later loads a different URL. 2665 * 2666 * @return a picture containing the current contents of the view. Note this 2667 * picture is of the entire document, and is not restricted to the 2668 * bounds of the view. 2669 */ 2670 public Picture capturePicture() { 2671 checkThread(); 2672 if (mNativeClass == 0) return null; 2673 Picture result = new Picture(); 2674 nativeCopyBaseContentToPicture(result); 2675 return result; 2676 } 2677 2678 /** 2679 * Return true if the browser is displaying a TextView for text input. 2680 */ 2681 private boolean inEditingMode() { 2682 return mWebTextView != null && mWebTextView.getParent() != null; 2683 } 2684 2685 /** 2686 * Remove the WebTextView. 2687 */ 2688 private void clearTextEntry() { 2689 if (inEditingMode()) { 2690 mWebTextView.remove(); 2691 } else { 2692 // The keyboard may be open with the WebView as the served view 2693 hideSoftKeyboard(); 2694 } 2695 } 2696 2697 /** 2698 * Return the current scale of the WebView 2699 * @return The current scale. 2700 */ 2701 public float getScale() { 2702 checkThread(); 2703 return mZoomManager.getScale(); 2704 } 2705 2706 /** 2707 * Compute the reading level scale of the WebView 2708 * @param scale The current scale. 2709 * @return The reading level scale. 2710 */ 2711 /*package*/ float computeReadingLevelScale(float scale) { 2712 return mZoomManager.computeReadingLevelScale(scale); 2713 } 2714 2715 /** 2716 * Set the initial scale for the WebView. 0 means default. If 2717 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2718 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2719 * WebView starts with this value as initial scale. 2720 * Please note that unlike the scale properties in the viewport meta tag, 2721 * this method doesn't take the screen density into account. 2722 * 2723 * @param scaleInPercent The initial scale in percent. 2724 */ 2725 public void setInitialScale(int scaleInPercent) { 2726 checkThread(); 2727 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2728 } 2729 2730 /** 2731 * Invoke the graphical zoom picker widget for this WebView. This will 2732 * result in the zoom widget appearing on the screen to control the zoom 2733 * level of this WebView. 2734 */ 2735 public void invokeZoomPicker() { 2736 checkThread(); 2737 if (!getSettings().supportZoom()) { 2738 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2739 return; 2740 } 2741 clearHelpers(); 2742 mZoomManager.invokeZoomPicker(); 2743 } 2744 2745 /** 2746 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2747 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2748 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2749 * anchor does not have a url or if it is a JavaScript url, the type will 2750 * be UNKNOWN_TYPE and the url has to be retrieved through 2751 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2752 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2753 * the "extra" field. A type of 2754 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2755 * a child node. If a phone number is found, the HitTestResult type is set 2756 * to PHONE_TYPE and the phone number is set in the "extra" field of 2757 * HitTestResult. If a map address is found, the HitTestResult type is set 2758 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2759 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2760 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2761 * HitTestResult type is set to UNKNOWN_TYPE. 2762 */ 2763 public HitTestResult getHitTestResult() { 2764 checkThread(); 2765 return hitTestResult(mInitialHitTestResult); 2766 } 2767 2768 private HitTestResult hitTestResult(HitTestResult fallback) { 2769 if (mNativeClass == 0 || sDisableNavcache) { 2770 return fallback; 2771 } 2772 2773 HitTestResult result = new HitTestResult(); 2774 if (nativeHasCursorNode()) { 2775 if (nativeCursorIsTextInput()) { 2776 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2777 } else { 2778 String text = nativeCursorText(); 2779 if (text != null) { 2780 if (text.startsWith(SCHEME_TEL)) { 2781 result.setType(HitTestResult.PHONE_TYPE); 2782 result.setExtra(URLDecoder.decode(text 2783 .substring(SCHEME_TEL.length()))); 2784 } else if (text.startsWith(SCHEME_MAILTO)) { 2785 result.setType(HitTestResult.EMAIL_TYPE); 2786 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2787 } else if (text.startsWith(SCHEME_GEO)) { 2788 result.setType(HitTestResult.GEO_TYPE); 2789 result.setExtra(URLDecoder.decode(text 2790 .substring(SCHEME_GEO.length()))); 2791 } else if (nativeCursorIsAnchor()) { 2792 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2793 result.setExtra(text); 2794 } 2795 } 2796 } 2797 } else if (fallback != null) { 2798 /* If webkit causes a rebuild while the long press is in progress, 2799 * the cursor node may be reset, even if it is still around. This 2800 * uses the cursor node saved when the touch began. Since the 2801 * nativeImageURI below only changes the result if it is successful, 2802 * this uses the data beneath the touch if available or the original 2803 * tap data otherwise. 2804 */ 2805 Log.v(LOGTAG, "hitTestResult use fallback"); 2806 result = fallback; 2807 } 2808 int type = result.getType(); 2809 if (type == HitTestResult.UNKNOWN_TYPE 2810 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2811 // Now check to see if it is an image. 2812 int contentX = viewToContentX(mLastTouchX + mScrollX); 2813 int contentY = viewToContentY(mLastTouchY + mScrollY); 2814 String text = nativeImageURI(contentX, contentY); 2815 if (text != null) { 2816 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2817 HitTestResult.IMAGE_TYPE : 2818 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2819 result.setExtra(text); 2820 } 2821 } 2822 return result; 2823 } 2824 2825 int getBlockLeftEdge(int x, int y, float readingScale) { 2826 if (!sDisableNavcache) { 2827 return nativeGetBlockLeftEdge(x, y, readingScale); 2828 } 2829 2830 float invReadingScale = 1.0f / readingScale; 2831 int readingWidth = (int) (getViewWidth() * invReadingScale); 2832 int left = NO_LEFTEDGE; 2833 if (mFocusedNode != null) { 2834 final int length = mFocusedNode.mEnclosingParentRects.length; 2835 for (int i = 0; i < length; i++) { 2836 Rect rect = mFocusedNode.mEnclosingParentRects[i]; 2837 if (rect.width() < mFocusedNode.mHitTestSlop) { 2838 // ignore bounding boxes that are too small 2839 continue; 2840 } else if (left != NO_LEFTEDGE && rect.width() > readingWidth) { 2841 // stop when bounding box doesn't fit the screen width 2842 // at reading scale 2843 break; 2844 } 2845 2846 left = rect.left; 2847 } 2848 } 2849 2850 return left; 2851 } 2852 2853 // Called by JNI when the DOM has changed the focus. Clear the focus so 2854 // that new keys will go to the newly focused field 2855 private void domChangedFocus() { 2856 if (inEditingMode()) { 2857 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2858 } 2859 } 2860 /** 2861 * Request the anchor or image element URL at the last tapped point. 2862 * If hrefMsg is null, this method returns immediately and does not 2863 * dispatch hrefMsg to its target. If the tapped point hits an image, 2864 * an anchor, or an image in an anchor, the message associates 2865 * strings in named keys in its data. The value paired with the key 2866 * may be an empty string. 2867 * 2868 * @param hrefMsg This message will be dispatched with the result of the 2869 * request. The message data contains three keys: 2870 * - "url" returns the anchor's href attribute. 2871 * - "title" returns the anchor's text. 2872 * - "src" returns the image's src attribute. 2873 */ 2874 public void requestFocusNodeHref(Message hrefMsg) { 2875 checkThread(); 2876 if (hrefMsg == null) { 2877 return; 2878 } 2879 int contentX = viewToContentX(mLastTouchX + mScrollX); 2880 int contentY = viewToContentY(mLastTouchY + mScrollY); 2881 if (mFocusedNode != null && mFocusedNode.mHitTestX == contentX 2882 && mFocusedNode.mHitTestY == contentY) { 2883 hrefMsg.getData().putString(FocusNodeHref.URL, mFocusedNode.mLinkUrl); 2884 hrefMsg.getData().putString(FocusNodeHref.TITLE, mFocusedNode.mAnchorText); 2885 hrefMsg.getData().putString(FocusNodeHref.SRC, mFocusedNode.mImageUrl); 2886 hrefMsg.sendToTarget(); 2887 return; 2888 } 2889 if (nativeHasCursorNode()) { 2890 Rect cursorBounds = nativeGetCursorRingBounds(); 2891 if (!cursorBounds.contains(contentX, contentY)) { 2892 int slop = viewToContentDimension(mNavSlop); 2893 cursorBounds.inset(-slop, -slop); 2894 if (cursorBounds.contains(contentX, contentY)) { 2895 contentX = cursorBounds.centerX(); 2896 contentY = cursorBounds.centerY(); 2897 } 2898 } 2899 } 2900 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2901 contentX, contentY, hrefMsg); 2902 } 2903 2904 /** 2905 * Request the url of the image last touched by the user. msg will be sent 2906 * to its target with a String representing the url as its object. 2907 * 2908 * @param msg This message will be dispatched with the result of the request 2909 * as the data member with "url" as key. The result can be null. 2910 */ 2911 public void requestImageRef(Message msg) { 2912 checkThread(); 2913 if (0 == mNativeClass) return; // client isn't initialized 2914 int contentX = viewToContentX(mLastTouchX + mScrollX); 2915 int contentY = viewToContentY(mLastTouchY + mScrollY); 2916 String ref = nativeImageURI(contentX, contentY); 2917 Bundle data = msg.getData(); 2918 data.putString("url", ref); 2919 msg.setData(data); 2920 msg.sendToTarget(); 2921 } 2922 2923 static int pinLoc(int x, int viewMax, int docMax) { 2924// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2925 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2926 // pin the short document to the top/left of the screen 2927 x = 0; 2928// Log.d(LOGTAG, "--- center " + x); 2929 } else if (x < 0) { 2930 x = 0; 2931// Log.d(LOGTAG, "--- zero"); 2932 } else if (x + viewMax > docMax) { 2933 x = docMax - viewMax; 2934// Log.d(LOGTAG, "--- pin " + x); 2935 } 2936 return x; 2937 } 2938 2939 // Expects x in view coordinates 2940 int pinLocX(int x) { 2941 if (mInOverScrollMode) return x; 2942 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2943 } 2944 2945 // Expects y in view coordinates 2946 int pinLocY(int y) { 2947 if (mInOverScrollMode) return y; 2948 return pinLoc(y, getViewHeightWithTitle(), 2949 computeRealVerticalScrollRange() + getTitleHeight()); 2950 } 2951 2952 /** 2953 * A title bar which is embedded in this WebView, and scrolls along with it 2954 * vertically, but not horizontally. 2955 */ 2956 private View mTitleBar; 2957 2958 /** 2959 * the title bar rendering gravity 2960 */ 2961 private int mTitleGravity; 2962 2963 /** 2964 * Add or remove a title bar to be embedded into the WebView, and scroll 2965 * along with it vertically, while remaining in view horizontally. Pass 2966 * null to remove the title bar from the WebView, and return to drawing 2967 * the WebView normally without translating to account for the title bar. 2968 * @hide 2969 */ 2970 public void setEmbeddedTitleBar(View v) { 2971 if (mTitleBar == v) return; 2972 if (mTitleBar != null) { 2973 removeView(mTitleBar); 2974 } 2975 if (null != v) { 2976 addView(v, new AbsoluteLayout.LayoutParams( 2977 ViewGroup.LayoutParams.MATCH_PARENT, 2978 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2979 } 2980 mTitleBar = v; 2981 } 2982 2983 /** 2984 * Set where to render the embedded title bar 2985 * NO_GRAVITY at the top of the page 2986 * TOP at the top of the screen 2987 * @hide 2988 */ 2989 public void setTitleBarGravity(int gravity) { 2990 mTitleGravity = gravity; 2991 // force refresh 2992 invalidate(); 2993 } 2994 2995 /** 2996 * Given a distance in view space, convert it to content space. Note: this 2997 * does not reflect translation, just scaling, so this should not be called 2998 * with coordinates, but should be called for dimensions like width or 2999 * height. 3000 */ 3001 private int viewToContentDimension(int d) { 3002 return Math.round(d * mZoomManager.getInvScale()); 3003 } 3004 3005 /** 3006 * Given an x coordinate in view space, convert it to content space. Also 3007 * may be used for absolute heights (such as for the WebTextView's 3008 * textSize, which is unaffected by the height of the title bar). 3009 */ 3010 /*package*/ int viewToContentX(int x) { 3011 return viewToContentDimension(x); 3012 } 3013 3014 /** 3015 * Given a y coordinate in view space, convert it to content space. 3016 * Takes into account the height of the title bar if there is one 3017 * embedded into the WebView. 3018 */ 3019 /*package*/ int viewToContentY(int y) { 3020 return viewToContentDimension(y - getTitleHeight()); 3021 } 3022 3023 /** 3024 * Given a x coordinate in view space, convert it to content space. 3025 * Returns the result as a float. 3026 */ 3027 private float viewToContentXf(int x) { 3028 return x * mZoomManager.getInvScale(); 3029 } 3030 3031 /** 3032 * Given a y coordinate in view space, convert it to content space. 3033 * Takes into account the height of the title bar if there is one 3034 * embedded into the WebView. Returns the result as a float. 3035 */ 3036 private float viewToContentYf(int y) { 3037 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 3038 } 3039 3040 /** 3041 * Given a distance in content space, convert it to view space. Note: this 3042 * does not reflect translation, just scaling, so this should not be called 3043 * with coordinates, but should be called for dimensions like width or 3044 * height. 3045 */ 3046 /*package*/ int contentToViewDimension(int d) { 3047 return Math.round(d * mZoomManager.getScale()); 3048 } 3049 3050 /** 3051 * Given an x coordinate in content space, convert it to view 3052 * space. 3053 */ 3054 /*package*/ int contentToViewX(int x) { 3055 return contentToViewDimension(x); 3056 } 3057 3058 /** 3059 * Given a y coordinate in content space, convert it to view 3060 * space. Takes into account the height of the title bar. 3061 */ 3062 /*package*/ int contentToViewY(int y) { 3063 return contentToViewDimension(y) + getTitleHeight(); 3064 } 3065 3066 private Rect contentToViewRect(Rect x) { 3067 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 3068 contentToViewX(x.right), contentToViewY(x.bottom)); 3069 } 3070 3071 /* To invalidate a rectangle in content coordinates, we need to transform 3072 the rect into view coordinates, so we can then call invalidate(...). 3073 3074 Normally, we would just call contentToView[XY](...), which eventually 3075 calls Math.round(coordinate * mActualScale). However, for invalidates, 3076 we need to account for the slop that occurs with antialiasing. To 3077 address that, we are a little more liberal in the size of the rect that 3078 we invalidate. 3079 3080 This liberal calculation calls floor() for the top/left, and ceil() for 3081 the bottom/right coordinates. This catches the possible extra pixels of 3082 antialiasing that we might have missed with just round(). 3083 */ 3084 3085 // Called by JNI to invalidate the View, given rectangle coordinates in 3086 // content space 3087 private void viewInvalidate(int l, int t, int r, int b) { 3088 final float scale = mZoomManager.getScale(); 3089 final int dy = getTitleHeight(); 3090 invalidate((int)Math.floor(l * scale), 3091 (int)Math.floor(t * scale) + dy, 3092 (int)Math.ceil(r * scale), 3093 (int)Math.ceil(b * scale) + dy); 3094 } 3095 3096 // Called by JNI to invalidate the View after a delay, given rectangle 3097 // coordinates in content space 3098 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 3099 final float scale = mZoomManager.getScale(); 3100 final int dy = getTitleHeight(); 3101 postInvalidateDelayed(delay, 3102 (int)Math.floor(l * scale), 3103 (int)Math.floor(t * scale) + dy, 3104 (int)Math.ceil(r * scale), 3105 (int)Math.ceil(b * scale) + dy); 3106 } 3107 3108 private void invalidateContentRect(Rect r) { 3109 viewInvalidate(r.left, r.top, r.right, r.bottom); 3110 } 3111 3112 // stop the scroll animation, and don't let a subsequent fling add 3113 // to the existing velocity 3114 private void abortAnimation() { 3115 mScroller.abortAnimation(); 3116 mLastVelocity = 0; 3117 } 3118 3119 /* call from webcoreview.draw(), so we're still executing in the UI thread 3120 */ 3121 private void recordNewContentSize(int w, int h, boolean updateLayout) { 3122 3123 // premature data from webkit, ignore 3124 if ((w | h) == 0) { 3125 return; 3126 } 3127 3128 // don't abort a scroll animation if we didn't change anything 3129 if (mContentWidth != w || mContentHeight != h) { 3130 // record new dimensions 3131 mContentWidth = w; 3132 mContentHeight = h; 3133 // If history Picture is drawn, don't update scroll. They will be 3134 // updated when we get out of that mode. 3135 if (!mDrawHistory) { 3136 // repin our scroll, taking into account the new content size 3137 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 3138 if (!mScroller.isFinished()) { 3139 // We are in the middle of a scroll. Repin the final scroll 3140 // position. 3141 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 3142 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 3143 } 3144 } 3145 } 3146 contentSizeChanged(updateLayout); 3147 } 3148 3149 // Used to avoid sending many visible rect messages. 3150 private Rect mLastVisibleRectSent = new Rect(); 3151 private Rect mLastGlobalRect = new Rect(); 3152 private Rect mVisibleRect = new Rect(); 3153 private Rect mGlobalVisibleRect = new Rect(); 3154 private Point mScrollOffset = new Point(); 3155 3156 Rect sendOurVisibleRect() { 3157 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 3158 calcOurContentVisibleRect(mVisibleRect); 3159 // Rect.equals() checks for null input. 3160 if (!mVisibleRect.equals(mLastVisibleRectSent)) { 3161 if (!mBlockWebkitViewMessages) { 3162 mScrollOffset.set(mVisibleRect.left, mVisibleRect.top); 3163 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 3164 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 3165 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, mScrollOffset); 3166 } 3167 mLastVisibleRectSent.set(mVisibleRect); 3168 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3169 } 3170 if (getGlobalVisibleRect(mGlobalVisibleRect) 3171 && !mGlobalVisibleRect.equals(mLastGlobalRect)) { 3172 if (DebugFlags.WEB_VIEW) { 3173 Log.v(LOGTAG, "sendOurVisibleRect=(" + mGlobalVisibleRect.left + "," 3174 + mGlobalVisibleRect.top + ",r=" + mGlobalVisibleRect.right + ",b=" 3175 + mGlobalVisibleRect.bottom); 3176 } 3177 // TODO: the global offset is only used by windowRect() 3178 // in ChromeClientAndroid ; other clients such as touch 3179 // and mouse events could return view + screen relative points. 3180 if (!mBlockWebkitViewMessages) { 3181 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, mGlobalVisibleRect); 3182 } 3183 mLastGlobalRect.set(mGlobalVisibleRect); 3184 } 3185 return mVisibleRect; 3186 } 3187 3188 private Point mGlobalVisibleOffset = new Point(); 3189 // Sets r to be the visible rectangle of our webview in view coordinates 3190 private void calcOurVisibleRect(Rect r) { 3191 getGlobalVisibleRect(r, mGlobalVisibleOffset); 3192 r.offset(-mGlobalVisibleOffset.x, -mGlobalVisibleOffset.y); 3193 } 3194 3195 // Sets r to be our visible rectangle in content coordinates 3196 private void calcOurContentVisibleRect(Rect r) { 3197 calcOurVisibleRect(r); 3198 r.left = viewToContentX(r.left); 3199 // viewToContentY will remove the total height of the title bar. Add 3200 // the visible height back in to account for the fact that if the title 3201 // bar is partially visible, the part of the visible rect which is 3202 // displaying our content is displaced by that amount. 3203 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 3204 r.right = viewToContentX(r.right); 3205 r.bottom = viewToContentY(r.bottom); 3206 } 3207 3208 private Rect mContentVisibleRect = new Rect(); 3209 // Sets r to be our visible rectangle in content coordinates. We use this 3210 // method on the native side to compute the position of the fixed layers. 3211 // Uses floating coordinates (necessary to correctly place elements when 3212 // the scale factor is not 1) 3213 private void calcOurContentVisibleRectF(RectF r) { 3214 calcOurVisibleRect(mContentVisibleRect); 3215 r.left = viewToContentXf(mContentVisibleRect.left); 3216 // viewToContentY will remove the total height of the title bar. Add 3217 // the visible height back in to account for the fact that if the title 3218 // bar is partially visible, the part of the visible rect which is 3219 // displaying our content is displaced by that amount. 3220 r.top = viewToContentYf(mContentVisibleRect.top + getVisibleTitleHeightImpl()); 3221 r.right = viewToContentXf(mContentVisibleRect.right); 3222 r.bottom = viewToContentYf(mContentVisibleRect.bottom); 3223 } 3224 3225 static class ViewSizeData { 3226 int mWidth; 3227 int mHeight; 3228 float mHeightWidthRatio; 3229 int mActualViewHeight; 3230 int mTextWrapWidth; 3231 int mAnchorX; 3232 int mAnchorY; 3233 float mScale; 3234 boolean mIgnoreHeight; 3235 } 3236 3237 /** 3238 * Compute unzoomed width and height, and if they differ from the last 3239 * values we sent, send them to webkit (to be used as new viewport) 3240 * 3241 * @param force ensures that the message is sent to webkit even if the width 3242 * or height has not changed since the last message 3243 * 3244 * @return true if new values were sent 3245 */ 3246 boolean sendViewSizeZoom(boolean force) { 3247 if (mBlockWebkitViewMessages) return false; 3248 if (mZoomManager.isPreventingWebkitUpdates()) return false; 3249 3250 int viewWidth = getViewWidth(); 3251 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 3252 // This height could be fixed and be different from actual visible height. 3253 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 3254 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 3255 // Make the ratio more accurate than (newHeight / newWidth), since the 3256 // latter both are calculated and rounded. 3257 float heightWidthRatio = (float) viewHeight / viewWidth; 3258 /* 3259 * Because the native side may have already done a layout before the 3260 * View system was able to measure us, we have to send a height of 0 to 3261 * remove excess whitespace when we grow our width. This will trigger a 3262 * layout and a change in content size. This content size change will 3263 * mean that contentSizeChanged will either call this method directly or 3264 * indirectly from onSizeChanged. 3265 */ 3266 if (newWidth > mLastWidthSent && mWrapContent) { 3267 newHeight = 0; 3268 heightWidthRatio = 0; 3269 } 3270 // Actual visible content height. 3271 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 3272 // Avoid sending another message if the dimensions have not changed. 3273 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 3274 actualViewHeight != mLastActualHeightSent) { 3275 ViewSizeData data = new ViewSizeData(); 3276 data.mWidth = newWidth; 3277 data.mHeight = newHeight; 3278 data.mHeightWidthRatio = heightWidthRatio; 3279 data.mActualViewHeight = actualViewHeight; 3280 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 3281 data.mScale = mZoomManager.getScale(); 3282 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 3283 && !mHeightCanMeasure; 3284 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 3285 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 3286 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 3287 mLastWidthSent = newWidth; 3288 mLastHeightSent = newHeight; 3289 mLastActualHeightSent = actualViewHeight; 3290 mZoomManager.clearDocumentAnchor(); 3291 return true; 3292 } 3293 return false; 3294 } 3295 3296 /** 3297 * Update the double-tap zoom. 3298 */ 3299 /* package */ void updateDoubleTapZoom(int doubleTapZoom) { 3300 mZoomManager.updateDoubleTapZoom(doubleTapZoom); 3301 } 3302 3303 private int computeRealHorizontalScrollRange() { 3304 if (mDrawHistory) { 3305 return mHistoryWidth; 3306 } else { 3307 // to avoid rounding error caused unnecessary scrollbar, use floor 3308 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 3309 } 3310 } 3311 3312 @Override 3313 protected int computeHorizontalScrollRange() { 3314 int range = computeRealHorizontalScrollRange(); 3315 3316 // Adjust reported range if overscrolled to compress the scroll bars 3317 final int scrollX = mScrollX; 3318 final int overscrollRight = computeMaxScrollX(); 3319 if (scrollX < 0) { 3320 range -= scrollX; 3321 } else if (scrollX > overscrollRight) { 3322 range += scrollX - overscrollRight; 3323 } 3324 3325 return range; 3326 } 3327 3328 @Override 3329 protected int computeHorizontalScrollOffset() { 3330 return Math.max(mScrollX, 0); 3331 } 3332 3333 private int computeRealVerticalScrollRange() { 3334 if (mDrawHistory) { 3335 return mHistoryHeight; 3336 } else { 3337 // to avoid rounding error caused unnecessary scrollbar, use floor 3338 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 3339 } 3340 } 3341 3342 @Override 3343 protected int computeVerticalScrollRange() { 3344 int range = computeRealVerticalScrollRange(); 3345 3346 // Adjust reported range if overscrolled to compress the scroll bars 3347 final int scrollY = mScrollY; 3348 final int overscrollBottom = computeMaxScrollY(); 3349 if (scrollY < 0) { 3350 range -= scrollY; 3351 } else if (scrollY > overscrollBottom) { 3352 range += scrollY - overscrollBottom; 3353 } 3354 3355 return range; 3356 } 3357 3358 @Override 3359 protected int computeVerticalScrollOffset() { 3360 return Math.max(mScrollY - getTitleHeight(), 0); 3361 } 3362 3363 @Override 3364 protected int computeVerticalScrollExtent() { 3365 return getViewHeight(); 3366 } 3367 3368 /** @hide */ 3369 @Override 3370 protected void onDrawVerticalScrollBar(Canvas canvas, 3371 Drawable scrollBar, 3372 int l, int t, int r, int b) { 3373 if (mScrollY < 0) { 3374 t -= mScrollY; 3375 } 3376 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3377 scrollBar.draw(canvas); 3378 } 3379 3380 @Override 3381 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3382 boolean clampedY) { 3383 // Special-case layer scrolling so that we do not trigger normal scroll 3384 // updating. 3385 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3386 scrollLayerTo(scrollX, scrollY); 3387 return; 3388 } 3389 mInOverScrollMode = false; 3390 int maxX = computeMaxScrollX(); 3391 int maxY = computeMaxScrollY(); 3392 if (maxX == 0) { 3393 // do not over scroll x if the page just fits the screen 3394 scrollX = pinLocX(scrollX); 3395 } else if (scrollX < 0 || scrollX > maxX) { 3396 mInOverScrollMode = true; 3397 } 3398 if (scrollY < 0 || scrollY > maxY) { 3399 mInOverScrollMode = true; 3400 } 3401 3402 int oldX = mScrollX; 3403 int oldY = mScrollY; 3404 3405 super.scrollTo(scrollX, scrollY); 3406 3407 if (mOverScrollGlow != null) { 3408 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 3409 } 3410 } 3411 3412 /** 3413 * Get the url for the current page. This is not always the same as the url 3414 * passed to WebViewClient.onPageStarted because although the load for 3415 * that url has begun, the current page may not have changed. 3416 * @return The url for the current page. 3417 */ 3418 public String getUrl() { 3419 checkThread(); 3420 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3421 return h != null ? h.getUrl() : null; 3422 } 3423 3424 /** 3425 * Get the original url for the current page. This is not always the same 3426 * as the url passed to WebViewClient.onPageStarted because although the 3427 * load for that url has begun, the current page may not have changed. 3428 * Also, there may have been redirects resulting in a different url to that 3429 * originally requested. 3430 * @return The url that was originally requested for the current page. 3431 */ 3432 public String getOriginalUrl() { 3433 checkThread(); 3434 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3435 return h != null ? h.getOriginalUrl() : null; 3436 } 3437 3438 /** 3439 * Get the title for the current page. This is the title of the current page 3440 * until WebViewClient.onReceivedTitle is called. 3441 * @return The title for the current page. 3442 */ 3443 public String getTitle() { 3444 checkThread(); 3445 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3446 return h != null ? h.getTitle() : null; 3447 } 3448 3449 /** 3450 * Get the favicon for the current page. This is the favicon of the current 3451 * page until WebViewClient.onReceivedIcon is called. 3452 * @return The favicon for the current page. 3453 */ 3454 public Bitmap getFavicon() { 3455 checkThread(); 3456 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3457 return h != null ? h.getFavicon() : null; 3458 } 3459 3460 /** 3461 * Get the touch icon url for the apple-touch-icon <link> element, or 3462 * a URL on this site's server pointing to the standard location of a 3463 * touch icon. 3464 * @hide 3465 */ 3466 public String getTouchIconUrl() { 3467 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3468 return h != null ? h.getTouchIconUrl() : null; 3469 } 3470 3471 /** 3472 * Get the progress for the current page. 3473 * @return The progress for the current page between 0 and 100. 3474 */ 3475 public int getProgress() { 3476 checkThread(); 3477 return mCallbackProxy.getProgress(); 3478 } 3479 3480 /** 3481 * @return the height of the HTML content. 3482 */ 3483 public int getContentHeight() { 3484 checkThread(); 3485 return mContentHeight; 3486 } 3487 3488 /** 3489 * @return the width of the HTML content. 3490 * @hide 3491 */ 3492 public int getContentWidth() { 3493 return mContentWidth; 3494 } 3495 3496 /** 3497 * @hide 3498 */ 3499 public int getPageBackgroundColor() { 3500 return nativeGetBackgroundColor(); 3501 } 3502 3503 /** 3504 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3505 * is a global requests, not restricted to just this webview. This can be 3506 * useful if the application has been paused. 3507 */ 3508 public void pauseTimers() { 3509 checkThread(); 3510 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3511 } 3512 3513 /** 3514 * Resume all layout, parsing, and JavaScript timers for all webviews. 3515 * This will resume dispatching all timers. 3516 */ 3517 public void resumeTimers() { 3518 checkThread(); 3519 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3520 } 3521 3522 /** 3523 * Call this to pause any extra processing associated with this WebView and 3524 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3525 * is taken offscreen, this could be called to reduce unnecessary CPU or 3526 * network traffic. When the WebView is again "active", call onResume(). 3527 * 3528 * Note that this differs from pauseTimers(), which affects all WebViews. 3529 */ 3530 public void onPause() { 3531 checkThread(); 3532 if (!mIsPaused) { 3533 mIsPaused = true; 3534 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3535 // We want to pause the current playing video when switching out 3536 // from the current WebView/tab. 3537 if (mHTML5VideoViewProxy != null) { 3538 mHTML5VideoViewProxy.pauseAndDispatch(); 3539 } 3540 if (mNativeClass != 0) { 3541 nativeSetPauseDrawing(mNativeClass, true); 3542 } 3543 3544 cancelSelectDialog(); 3545 WebCoreThreadWatchdog.pause(); 3546 } 3547 } 3548 3549 @Override 3550 protected void onWindowVisibilityChanged(int visibility) { 3551 super.onWindowVisibilityChanged(visibility); 3552 updateDrawingState(); 3553 } 3554 3555 void updateDrawingState() { 3556 if (mNativeClass == 0 || mIsPaused) return; 3557 if (getWindowVisibility() != VISIBLE) { 3558 nativeSetPauseDrawing(mNativeClass, true); 3559 } else if (getVisibility() != VISIBLE) { 3560 nativeSetPauseDrawing(mNativeClass, true); 3561 } else { 3562 nativeSetPauseDrawing(mNativeClass, false); 3563 } 3564 } 3565 3566 /** 3567 * Call this to resume a WebView after a previous call to onPause(). 3568 */ 3569 public void onResume() { 3570 checkThread(); 3571 if (mIsPaused) { 3572 mIsPaused = false; 3573 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3574 if (mNativeClass != 0) { 3575 nativeSetPauseDrawing(mNativeClass, false); 3576 } 3577 } 3578 // Ensure that the watchdog has a currently valid Context to be able to display 3579 // a prompt dialog. For example, if the Activity was finished whilst the WebCore 3580 // thread was blocked and the Activity is started again, we may reuse the blocked 3581 // thread, but we'll have a new Activity. 3582 WebCoreThreadWatchdog.updateContext(mContext); 3583 // We get a call to onResume for new WebViews (i.e. mIsPaused will be false). We need 3584 // to ensure that the Watchdog thread is running for the new WebView, so call 3585 // it outside the if block above. 3586 WebCoreThreadWatchdog.resume(); 3587 } 3588 3589 /** 3590 * Returns true if the view is paused, meaning onPause() was called. Calling 3591 * onResume() sets the paused state back to false. 3592 * @hide 3593 */ 3594 public boolean isPaused() { 3595 return mIsPaused; 3596 } 3597 3598 /** 3599 * Call this to inform the view that memory is low so that it can 3600 * free any available memory. 3601 */ 3602 public void freeMemory() { 3603 checkThread(); 3604 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3605 } 3606 3607 /** 3608 * Clear the resource cache. Note that the cache is per-application, so 3609 * this will clear the cache for all WebViews used. 3610 * 3611 * @param includeDiskFiles If false, only the RAM cache is cleared. 3612 */ 3613 public void clearCache(boolean includeDiskFiles) { 3614 checkThread(); 3615 // Note: this really needs to be a static method as it clears cache for all 3616 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3617 // we can't make this static. 3618 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3619 includeDiskFiles ? 1 : 0, 0); 3620 } 3621 3622 /** 3623 * Make sure that clearing the form data removes the adapter from the 3624 * currently focused textfield if there is one. 3625 */ 3626 public void clearFormData() { 3627 checkThread(); 3628 if (inEditingMode()) { 3629 mWebTextView.setAdapterCustom(null); 3630 } 3631 } 3632 3633 /** 3634 * Tell the WebView to clear its internal back/forward list. 3635 */ 3636 public void clearHistory() { 3637 checkThread(); 3638 mCallbackProxy.getBackForwardList().setClearPending(); 3639 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3640 } 3641 3642 /** 3643 * Clear the SSL preferences table stored in response to proceeding with SSL 3644 * certificate errors. 3645 */ 3646 public void clearSslPreferences() { 3647 checkThread(); 3648 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3649 } 3650 3651 /** 3652 * Return the WebBackForwardList for this WebView. This contains the 3653 * back/forward list for use in querying each item in the history stack. 3654 * This is a copy of the private WebBackForwardList so it contains only a 3655 * snapshot of the current state. Multiple calls to this method may return 3656 * different objects. The object returned from this method will not be 3657 * updated to reflect any new state. 3658 */ 3659 public WebBackForwardList copyBackForwardList() { 3660 checkThread(); 3661 return mCallbackProxy.getBackForwardList().clone(); 3662 } 3663 3664 /* 3665 * Highlight and scroll to the next occurance of String in findAll. 3666 * Wraps the page infinitely, and scrolls. Must be called after 3667 * calling findAll. 3668 * 3669 * @param forward Direction to search. 3670 */ 3671 public void findNext(boolean forward) { 3672 checkThread(); 3673 if (0 == mNativeClass) return; // client isn't initialized 3674 nativeFindNext(forward); 3675 } 3676 3677 /* 3678 * Find all instances of find on the page and highlight them. 3679 * @param find String to find. 3680 * @return int The number of occurances of the String "find" 3681 * that were found. 3682 */ 3683 public int findAll(String find) { 3684 checkThread(); 3685 if (0 == mNativeClass) return 0; // client isn't initialized 3686 int result = find != null ? nativeFindAll(find.toLowerCase(), 3687 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3688 invalidate(); 3689 mLastFind = find; 3690 return result; 3691 } 3692 3693 /** 3694 * Start an ActionMode for finding text in this WebView. Only works if this 3695 * WebView is attached to the view system. 3696 * @param text If non-null, will be the initial text to search for. 3697 * Otherwise, the last String searched for in this WebView will 3698 * be used to start. 3699 * @param showIme If true, show the IME, assuming the user will begin typing. 3700 * If false and text is non-null, perform a find all. 3701 * @return boolean True if the find dialog is shown, false otherwise. 3702 */ 3703 public boolean showFindDialog(String text, boolean showIme) { 3704 checkThread(); 3705 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3706 if (getParent() == null || startActionMode(callback) == null) { 3707 // Could not start the action mode, so end Find on page 3708 return false; 3709 } 3710 mCachedOverlappingActionModeHeight = -1; 3711 mFindCallback = callback; 3712 setFindIsUp(true); 3713 mFindCallback.setWebView(this); 3714 if (showIme) { 3715 mFindCallback.showSoftInput(); 3716 } else if (text != null) { 3717 mFindCallback.setText(text); 3718 mFindCallback.findAll(); 3719 return true; 3720 } 3721 if (text == null) { 3722 text = mLastFind; 3723 } 3724 if (text != null) { 3725 mFindCallback.setText(text); 3726 } 3727 return true; 3728 } 3729 3730 /** 3731 * Keep track of the find callback so that we can remove its titlebar if 3732 * necessary. 3733 */ 3734 private FindActionModeCallback mFindCallback; 3735 3736 /** 3737 * Toggle whether the find dialog is showing, for both native and Java. 3738 */ 3739 private void setFindIsUp(boolean isUp) { 3740 mFindIsUp = isUp; 3741 if (0 == mNativeClass) return; // client isn't initialized 3742 nativeSetFindIsUp(isUp); 3743 } 3744 3745 /** 3746 * Return the index of the currently highlighted match. 3747 */ 3748 int findIndex() { 3749 if (0 == mNativeClass) return -1; 3750 return nativeFindIndex(); 3751 } 3752 3753 // Used to know whether the find dialog is open. Affects whether 3754 // or not we draw the highlights for matches. 3755 private boolean mFindIsUp; 3756 3757 // Keep track of the last string sent, so we can search again when find is 3758 // reopened. 3759 private String mLastFind; 3760 3761 /** 3762 * Return the first substring consisting of the address of a physical 3763 * location. Currently, only addresses in the United States are detected, 3764 * and consist of: 3765 * - a house number 3766 * - a street name 3767 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3768 * - a city name 3769 * - a state or territory, either spelled out or two-letter abbr. 3770 * - an optional 5 digit or 9 digit zip code. 3771 * 3772 * All names must be correctly capitalized, and the zip code, if present, 3773 * must be valid for the state. The street type must be a standard USPS 3774 * spelling or abbreviation. The state or territory must also be spelled 3775 * or abbreviated using USPS standards. The house number may not exceed 3776 * five digits. 3777 * @param addr The string to search for addresses. 3778 * 3779 * @return the address, or if no address is found, return null. 3780 */ 3781 public static String findAddress(String addr) { 3782 checkThread(); 3783 return findAddress(addr, false); 3784 } 3785 3786 /** 3787 * @hide 3788 * Return the first substring consisting of the address of a physical 3789 * location. Currently, only addresses in the United States are detected, 3790 * and consist of: 3791 * - a house number 3792 * - a street name 3793 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3794 * - a city name 3795 * - a state or territory, either spelled out or two-letter abbr. 3796 * - an optional 5 digit or 9 digit zip code. 3797 * 3798 * Names are optionally capitalized, and the zip code, if present, 3799 * must be valid for the state. The street type must be a standard USPS 3800 * spelling or abbreviation. The state or territory must also be spelled 3801 * or abbreviated using USPS standards. The house number may not exceed 3802 * five digits. 3803 * @param addr The string to search for addresses. 3804 * @param caseInsensitive addr Set to true to make search ignore case. 3805 * 3806 * @return the address, or if no address is found, return null. 3807 */ 3808 public static String findAddress(String addr, boolean caseInsensitive) { 3809 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3810 } 3811 3812 /* 3813 * Clear the highlighting surrounding text matches created by findAll. 3814 */ 3815 public void clearMatches() { 3816 checkThread(); 3817 if (mNativeClass == 0) 3818 return; 3819 nativeSetFindIsEmpty(); 3820 invalidate(); 3821 } 3822 3823 /** 3824 * Called when the find ActionMode ends. 3825 */ 3826 void notifyFindDialogDismissed() { 3827 mFindCallback = null; 3828 mCachedOverlappingActionModeHeight = -1; 3829 if (mWebViewCore == null) { 3830 return; 3831 } 3832 clearMatches(); 3833 setFindIsUp(false); 3834 // Now that the dialog has been removed, ensure that we scroll to a 3835 // location that is not beyond the end of the page. 3836 pinScrollTo(mScrollX, mScrollY, false, 0); 3837 invalidate(); 3838 } 3839 3840 /** 3841 * Query the document to see if it contains any image references. The 3842 * message object will be dispatched with arg1 being set to 1 if images 3843 * were found and 0 if the document does not reference any images. 3844 * @param response The message that will be dispatched with the result. 3845 */ 3846 public void documentHasImages(Message response) { 3847 checkThread(); 3848 if (response == null) { 3849 return; 3850 } 3851 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3852 } 3853 3854 /** 3855 * Request the scroller to abort any ongoing animation 3856 * 3857 * @hide 3858 */ 3859 public void stopScroll() { 3860 mScroller.forceFinished(true); 3861 mLastVelocity = 0; 3862 } 3863 3864 @Override 3865 public void computeScroll() { 3866 if (mScroller.computeScrollOffset()) { 3867 int oldX = mScrollX; 3868 int oldY = mScrollY; 3869 int x = mScroller.getCurrX(); 3870 int y = mScroller.getCurrY(); 3871 invalidate(); // So we draw again 3872 3873 if (!mScroller.isFinished()) { 3874 int rangeX = computeMaxScrollX(); 3875 int rangeY = computeMaxScrollY(); 3876 int overflingDistance = mOverflingDistance; 3877 3878 // Use the layer's scroll data if needed. 3879 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3880 oldX = mScrollingLayerRect.left; 3881 oldY = mScrollingLayerRect.top; 3882 rangeX = mScrollingLayerRect.right; 3883 rangeY = mScrollingLayerRect.bottom; 3884 // No overscrolling for layers. 3885 overflingDistance = 0; 3886 } 3887 3888 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3889 rangeX, rangeY, 3890 overflingDistance, overflingDistance, false); 3891 3892 if (mOverScrollGlow != null) { 3893 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3894 } 3895 } else { 3896 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3897 mScrollX = x; 3898 mScrollY = y; 3899 } else { 3900 // Update the layer position instead of WebView. 3901 scrollLayerTo(x, y); 3902 } 3903 abortAnimation(); 3904 nativeSetIsScrolling(false); 3905 if (!mBlockWebkitViewMessages) { 3906 WebViewCore.resumePriority(); 3907 if (!mSelectingText) { 3908 WebViewCore.resumeUpdatePicture(mWebViewCore); 3909 } 3910 } 3911 if (oldX != mScrollX || oldY != mScrollY) { 3912 sendOurVisibleRect(); 3913 } 3914 } 3915 } else { 3916 super.computeScroll(); 3917 } 3918 } 3919 3920 private void scrollLayerTo(int x, int y) { 3921 if (x == mScrollingLayerRect.left && y == mScrollingLayerRect.top) { 3922 return; 3923 } 3924 if (mSelectingText) { 3925 int dx = mScrollingLayerRect.left - x; 3926 int dy = mScrollingLayerRect.top - y; 3927 if (mSelectCursorBaseLayerId == mCurrentScrollingLayerId) { 3928 mSelectCursorBase.offset(dx, dy); 3929 } 3930 if (mSelectCursorExtentLayerId == mCurrentScrollingLayerId) { 3931 mSelectCursorExtent.offset(dx, dy); 3932 } 3933 } 3934 nativeScrollLayer(mCurrentScrollingLayerId, x, y); 3935 mScrollingLayerRect.left = x; 3936 mScrollingLayerRect.top = y; 3937 mWebViewCore.sendMessage(WebViewCore.EventHub.SCROLL_LAYER, mCurrentScrollingLayerId, 3938 mScrollingLayerRect); 3939 onScrollChanged(mScrollX, mScrollY, mScrollX, mScrollY); 3940 invalidate(); 3941 } 3942 3943 private static int computeDuration(int dx, int dy) { 3944 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3945 int duration = distance * 1000 / STD_SPEED; 3946 return Math.min(duration, MAX_DURATION); 3947 } 3948 3949 // helper to pin the scrollBy parameters (already in view coordinates) 3950 // returns true if the scroll was changed 3951 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3952 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3953 } 3954 // helper to pin the scrollTo parameters (already in view coordinates) 3955 // returns true if the scroll was changed 3956 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3957 x = pinLocX(x); 3958 y = pinLocY(y); 3959 int dx = x - mScrollX; 3960 int dy = y - mScrollY; 3961 3962 if ((dx | dy) == 0) { 3963 return false; 3964 } 3965 abortAnimation(); 3966 if (animate) { 3967 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3968 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3969 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3970 awakenScrollBars(mScroller.getDuration()); 3971 invalidate(); 3972 } else { 3973 scrollTo(x, y); 3974 } 3975 return true; 3976 } 3977 3978 // Scale from content to view coordinates, and pin. 3979 // Also called by jni webview.cpp 3980 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3981 if (mDrawHistory) { 3982 // disallow WebView to change the scroll position as History Picture 3983 // is used in the view system. 3984 // TODO: as we switchOutDrawHistory when trackball or navigation 3985 // keys are hit, this should be safe. Right? 3986 return false; 3987 } 3988 cx = contentToViewDimension(cx); 3989 cy = contentToViewDimension(cy); 3990 if (mHeightCanMeasure) { 3991 // move our visible rect according to scroll request 3992 if (cy != 0) { 3993 Rect tempRect = new Rect(); 3994 calcOurVisibleRect(tempRect); 3995 tempRect.offset(cx, cy); 3996 requestRectangleOnScreen(tempRect); 3997 } 3998 // FIXME: We scroll horizontally no matter what because currently 3999 // ScrollView and ListView will not scroll horizontally. 4000 // FIXME: Why do we only scroll horizontally if there is no 4001 // vertical scroll? 4002// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 4003 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 4004 } else { 4005 return pinScrollBy(cx, cy, animate, 0); 4006 } 4007 } 4008 4009 /** 4010 * Called by CallbackProxy when the page starts loading. 4011 * @param url The URL of the page which has started loading. 4012 */ 4013 /* package */ void onPageStarted(String url) { 4014 // every time we start a new page, we want to reset the 4015 // WebView certificate: if the new site is secure, we 4016 // will reload it and get a new certificate set; 4017 // if the new site is not secure, the certificate must be 4018 // null, and that will be the case 4019 setCertificate(null); 4020 4021 // reset the flag since we set to true in if need after 4022 // loading is see onPageFinished(Url) 4023 mAccessibilityScriptInjected = false; 4024 } 4025 4026 /** 4027 * Called by CallbackProxy when the page finishes loading. 4028 * @param url The URL of the page which has finished loading. 4029 */ 4030 /* package */ void onPageFinished(String url) { 4031 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 4032 // If the user is now on a different page, or has scrolled the page 4033 // past the point where the title bar is offscreen, ignore the 4034 // scroll request. 4035 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 4036 && mScrollX == 0 && mScrollY == 0) { 4037 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 4038 SLIDE_TITLE_DURATION); 4039 } 4040 mPageThatNeedsToSlideTitleBarOffScreen = null; 4041 } 4042 mZoomManager.onPageFinished(url); 4043 injectAccessibilityForUrl(url); 4044 } 4045 4046 /** 4047 * This method injects accessibility in the loaded document if accessibility 4048 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 4049 * If no URL specific script is found or JavaScript is disabled we fallback to 4050 * the default {@link AccessibilityInjector} implementation. 4051 * </p> 4052 * If the URL has the "axs" paramter set to 1 it has already done the 4053 * script injection so we do nothing. If the parameter is set to 0 4054 * the URL opts out accessibility script injection so we fall back to 4055 * the default {@link AccessibilityInjector}. 4056 * </p> 4057 * Note: If the user has not opted-in the accessibility script injection no scripts 4058 * are injected rather the default {@link AccessibilityInjector} implementation 4059 * is used. 4060 * 4061 * @param url The URL loaded by this {@link WebView}. 4062 */ 4063 private void injectAccessibilityForUrl(String url) { 4064 if (mWebViewCore == null) { 4065 return; 4066 } 4067 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 4068 4069 if (!accessibilityManager.isEnabled()) { 4070 // it is possible that accessibility was turned off between reloads 4071 ensureAccessibilityScriptInjectorInstance(false); 4072 return; 4073 } 4074 4075 if (!getSettings().getJavaScriptEnabled()) { 4076 // no JS so we fallback to the basic buil-in support 4077 ensureAccessibilityScriptInjectorInstance(true); 4078 return; 4079 } 4080 4081 // check the URL "axs" parameter to choose appropriate action 4082 int axsParameterValue = getAxsUrlParameterValue(url); 4083 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 4084 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 4085 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 4086 if (onDeviceScriptInjectionEnabled) { 4087 ensureAccessibilityScriptInjectorInstance(false); 4088 // neither script injected nor script injection opted out => we inject 4089 loadUrl(getScreenReaderInjectingJs()); 4090 // TODO: Set this flag after successfull script injection. Maybe upon injection 4091 // the chooser should update the meta tag and we check it to declare success 4092 mAccessibilityScriptInjected = true; 4093 } else { 4094 // injection disabled so we fallback to the basic built-in support 4095 ensureAccessibilityScriptInjectorInstance(true); 4096 } 4097 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 4098 // injection opted out so we fallback to the basic buil-in support 4099 ensureAccessibilityScriptInjectorInstance(true); 4100 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 4101 ensureAccessibilityScriptInjectorInstance(false); 4102 // the URL provides accessibility but we still need to add our generic script 4103 loadUrl(getScreenReaderInjectingJs()); 4104 } else { 4105 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 4106 } 4107 } 4108 4109 /** 4110 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 4111 * 4112 * @param present True to ensure an insance, false to ensure no instance. 4113 */ 4114 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 4115 if (present) { 4116 if (mAccessibilityInjector == null) { 4117 mAccessibilityInjector = new AccessibilityInjector(this); 4118 } 4119 } else { 4120 mAccessibilityInjector = null; 4121 } 4122 } 4123 4124 /** 4125 * Gets JavaScript that injects a screen-reader. 4126 * 4127 * @return The JavaScript snippet. 4128 */ 4129 private String getScreenReaderInjectingJs() { 4130 String screenReaderUrl = Settings.Secure.getString(mContext.getContentResolver(), 4131 Settings.Secure.ACCESSIBILITY_SCREEN_READER_URL); 4132 return String.format(ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE, screenReaderUrl); 4133 } 4134 4135 /** 4136 * Gets the "axs" URL parameter value. 4137 * 4138 * @param url A url to fetch the paramter from. 4139 * @return The parameter value if such, -1 otherwise. 4140 */ 4141 private int getAxsUrlParameterValue(String url) { 4142 if (mMatchAxsUrlParameterPattern == null) { 4143 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 4144 } 4145 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 4146 if (matcher.find()) { 4147 String keyValuePair = url.substring(matcher.start(), matcher.end()); 4148 return Integer.parseInt(keyValuePair.split("=")[1]); 4149 } 4150 return -1; 4151 } 4152 4153 /** 4154 * The URL of a page that sent a message to scroll the title bar off screen. 4155 * 4156 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 4157 * title bar off the screen. Sometimes, the scroll position is set before 4158 * the page finishes loading. Rather than scrolling while the page is still 4159 * loading, keep track of the URL and new scroll position so we can perform 4160 * the scroll once the page finishes loading. 4161 */ 4162 private String mPageThatNeedsToSlideTitleBarOffScreen; 4163 4164 /** 4165 * The destination Y scroll position to be used when the page finishes 4166 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 4167 */ 4168 private int mYDistanceToSlideTitleOffScreen; 4169 4170 // scale from content to view coordinates, and pin 4171 // return true if pin caused the final x/y different than the request cx/cy, 4172 // and a future scroll may reach the request cx/cy after our size has 4173 // changed 4174 // return false if the view scroll to the exact position as it is requested, 4175 // where negative numbers are taken to mean 0 4176 private boolean setContentScrollTo(int cx, int cy) { 4177 if (mDrawHistory) { 4178 // disallow WebView to change the scroll position as History Picture 4179 // is used in the view system. 4180 // One known case where this is called is that WebCore tries to 4181 // restore the scroll position. As history Picture already uses the 4182 // saved scroll position, it is ok to skip this. 4183 return false; 4184 } 4185 int vx; 4186 int vy; 4187 if ((cx | cy) == 0) { 4188 // If the page is being scrolled to (0,0), do not add in the title 4189 // bar's height, and simply scroll to (0,0). (The only other work 4190 // in contentToView_ is to multiply, so this would not change 0.) 4191 vx = 0; 4192 vy = 0; 4193 } else { 4194 vx = contentToViewX(cx); 4195 vy = contentToViewY(cy); 4196 } 4197// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 4198// vx + " " + vy + "]"); 4199 // Some mobile sites attempt to scroll the title bar off the page by 4200 // scrolling to (0,1). If we are at the top left corner of the 4201 // page, assume this is an attempt to scroll off the title bar, and 4202 // animate the title bar off screen slowly enough that the user can see 4203 // it. 4204 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 4205 && mTitleBar != null) { 4206 // FIXME: 100 should be defined somewhere as our max progress. 4207 if (getProgress() < 100) { 4208 // Wait to scroll the title bar off screen until the page has 4209 // finished loading. Keep track of the URL and the destination 4210 // Y position 4211 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 4212 mYDistanceToSlideTitleOffScreen = vy; 4213 } else { 4214 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 4215 } 4216 // Since we are animating, we have not yet reached the desired 4217 // scroll position. Do not return true to request another attempt 4218 return false; 4219 } 4220 pinScrollTo(vx, vy, false, 0); 4221 // If the request was to scroll to a negative coordinate, treat it as if 4222 // it was a request to scroll to 0 4223 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 4224 return true; 4225 } else { 4226 return false; 4227 } 4228 } 4229 4230 // scale from content to view coordinates, and pin 4231 private void spawnContentScrollTo(int cx, int cy) { 4232 if (mDrawHistory) { 4233 // disallow WebView to change the scroll position as History Picture 4234 // is used in the view system. 4235 return; 4236 } 4237 int vx = contentToViewX(cx); 4238 int vy = contentToViewY(cy); 4239 pinScrollTo(vx, vy, true, 0); 4240 } 4241 4242 /** 4243 * These are from webkit, and are in content coordinate system (unzoomed) 4244 */ 4245 private void contentSizeChanged(boolean updateLayout) { 4246 // suppress 0,0 since we usually see real dimensions soon after 4247 // this avoids drawing the prev content in a funny place. If we find a 4248 // way to consolidate these notifications, this check may become 4249 // obsolete 4250 if ((mContentWidth | mContentHeight) == 0) { 4251 return; 4252 } 4253 4254 if (mHeightCanMeasure) { 4255 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 4256 || updateLayout) { 4257 requestLayout(); 4258 } 4259 } else if (mWidthCanMeasure) { 4260 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 4261 || updateLayout) { 4262 requestLayout(); 4263 } 4264 } else { 4265 // If we don't request a layout, try to send our view size to the 4266 // native side to ensure that WebCore has the correct dimensions. 4267 sendViewSizeZoom(false); 4268 } 4269 } 4270 4271 /** 4272 * Set the WebViewClient that will receive various notifications and 4273 * requests. This will replace the current handler. 4274 * @param client An implementation of WebViewClient. 4275 */ 4276 public void setWebViewClient(WebViewClient client) { 4277 checkThread(); 4278 mCallbackProxy.setWebViewClient(client); 4279 } 4280 4281 /** 4282 * Gets the WebViewClient 4283 * @return the current WebViewClient instance. 4284 * 4285 * @hide This is an implementation detail. 4286 */ 4287 public WebViewClient getWebViewClient() { 4288 return mCallbackProxy.getWebViewClient(); 4289 } 4290 4291 /** 4292 * Register the interface to be used when content can not be handled by 4293 * the rendering engine, and should be downloaded instead. This will replace 4294 * the current handler. 4295 * @param listener An implementation of DownloadListener. 4296 */ 4297 public void setDownloadListener(DownloadListener listener) { 4298 checkThread(); 4299 mCallbackProxy.setDownloadListener(listener); 4300 } 4301 4302 /** 4303 * Set the chrome handler. This is an implementation of WebChromeClient for 4304 * use in handling JavaScript dialogs, favicons, titles, and the progress. 4305 * This will replace the current handler. 4306 * @param client An implementation of WebChromeClient. 4307 */ 4308 public void setWebChromeClient(WebChromeClient client) { 4309 checkThread(); 4310 mCallbackProxy.setWebChromeClient(client); 4311 } 4312 4313 /** 4314 * Gets the chrome handler. 4315 * @return the current WebChromeClient instance. 4316 * 4317 * @hide This is an implementation detail. 4318 */ 4319 public WebChromeClient getWebChromeClient() { 4320 return mCallbackProxy.getWebChromeClient(); 4321 } 4322 4323 /** 4324 * Set the back/forward list client. This is an implementation of 4325 * WebBackForwardListClient for handling new items and changes in the 4326 * history index. 4327 * @param client An implementation of WebBackForwardListClient. 4328 * {@hide} 4329 */ 4330 public void setWebBackForwardListClient(WebBackForwardListClient client) { 4331 mCallbackProxy.setWebBackForwardListClient(client); 4332 } 4333 4334 /** 4335 * Gets the WebBackForwardListClient. 4336 * {@hide} 4337 */ 4338 public WebBackForwardListClient getWebBackForwardListClient() { 4339 return mCallbackProxy.getWebBackForwardListClient(); 4340 } 4341 4342 /** 4343 * Set the Picture listener. This is an interface used to receive 4344 * notifications of a new Picture. 4345 * @param listener An implementation of WebView.PictureListener. 4346 * @deprecated This method is now obsolete. 4347 */ 4348 @Deprecated 4349 public void setPictureListener(PictureListener listener) { 4350 checkThread(); 4351 mPictureListener = listener; 4352 } 4353 4354 /** 4355 * {@hide} 4356 */ 4357 /* FIXME: Debug only! Remove for SDK! */ 4358 public void externalRepresentation(Message callback) { 4359 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 4360 } 4361 4362 /** 4363 * {@hide} 4364 */ 4365 /* FIXME: Debug only! Remove for SDK! */ 4366 public void documentAsText(Message callback) { 4367 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 4368 } 4369 4370 /** 4371 * This method injects the supplied Java object into the WebView. The 4372 * object is injected into the JavaScript context of the main frame, using 4373 * the supplied name. This allows the Java object to be accessed from 4374 * JavaScript. Note that that injected objects will not appear in 4375 * JavaScript until the page is next (re)loaded. For example: 4376 * <pre> webView.addJavascriptInterface(new Object(), "injectedObject"); 4377 * webView.loadData("<!DOCTYPE html><title></title>", "text/html", null); 4378 * webView.loadUrl("javascript:alert(injectedObject.toString())");</pre> 4379 * <p><strong>IMPORTANT:</strong> 4380 * <ul> 4381 * <li> addJavascriptInterface() can be used to allow JavaScript to control 4382 * the host application. This is a powerful feature, but also presents a 4383 * security risk. Use of this method in a WebView containing untrusted 4384 * content could allow an attacker to manipulate the host application in 4385 * unintended ways, executing Java code with the permissions of the host 4386 * application. Use extreme care when using this method in a WebView which 4387 * could contain untrusted content. 4388 * <li> JavaScript interacts with Java object on a private, background 4389 * thread of the WebView. Care is therefore required to maintain thread 4390 * safety.</li> 4391 * </ul></p> 4392 * @param object The Java object to inject into the WebView's JavaScript 4393 * context. Null values are ignored. 4394 * @param name The name used to expose the instance in JavaScript. 4395 */ 4396 public void addJavascriptInterface(Object object, String name) { 4397 checkThread(); 4398 if (object == null) { 4399 return; 4400 } 4401 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4402 arg.mObject = object; 4403 arg.mInterfaceName = name; 4404 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 4405 } 4406 4407 /** 4408 * Removes a previously added JavaScript interface with the given name. 4409 * @param interfaceName The name of the interface to remove. 4410 */ 4411 public void removeJavascriptInterface(String interfaceName) { 4412 checkThread(); 4413 if (mWebViewCore != null) { 4414 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4415 arg.mInterfaceName = interfaceName; 4416 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 4417 } 4418 } 4419 4420 /** 4421 * Return the WebSettings object used to control the settings for this 4422 * WebView. 4423 * @return A WebSettings object that can be used to control this WebView's 4424 * settings. 4425 */ 4426 public WebSettings getSettings() { 4427 checkThread(); 4428 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4429 } 4430 4431 /** 4432 * Return the list of currently loaded plugins. 4433 * @return The list of currently loaded plugins. 4434 * 4435 * @hide 4436 * @deprecated This was used for Gears, which has been deprecated. 4437 */ 4438 @Deprecated 4439 public static synchronized PluginList getPluginList() { 4440 checkThread(); 4441 return new PluginList(); 4442 } 4443 4444 /** 4445 * @hide 4446 * @deprecated This was used for Gears, which has been deprecated. 4447 */ 4448 @Deprecated 4449 public void refreshPlugins(boolean reloadOpenPages) { 4450 checkThread(); 4451 } 4452 4453 //------------------------------------------------------------------------- 4454 // Override View methods 4455 //------------------------------------------------------------------------- 4456 4457 @Override 4458 protected void finalize() throws Throwable { 4459 try { 4460 if (mNativeClass != 0) { 4461 mPrivateHandler.post(new Runnable() { 4462 @Override 4463 public void run() { 4464 destroy(); 4465 } 4466 }); 4467 } 4468 } finally { 4469 super.finalize(); 4470 } 4471 } 4472 4473 @Override 4474 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 4475 if (child == mTitleBar) { 4476 // When drawing the title bar, move it horizontally to always show 4477 // at the top of the WebView. 4478 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 4479 int newTop = 0; 4480 if (mTitleGravity == Gravity.NO_GRAVITY) { 4481 newTop = Math.min(0, mScrollY); 4482 } else if (mTitleGravity == Gravity.TOP) { 4483 newTop = mScrollY; 4484 } 4485 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 4486 mTitleBar.setTop(newTop); 4487 } 4488 return super.drawChild(canvas, child, drawingTime); 4489 } 4490 4491 private void drawContent(Canvas canvas, boolean drawRings) { 4492 drawCoreAndCursorRing(canvas, mBackgroundColor, 4493 mDrawCursorRing && drawRings); 4494 } 4495 4496 /** 4497 * Draw the background when beyond bounds 4498 * @param canvas Canvas to draw into 4499 */ 4500 private void drawOverScrollBackground(Canvas canvas) { 4501 if (mOverScrollBackground == null) { 4502 mOverScrollBackground = new Paint(); 4503 Bitmap bm = BitmapFactory.decodeResource( 4504 mContext.getResources(), 4505 com.android.internal.R.drawable.status_bar_background); 4506 mOverScrollBackground.setShader(new BitmapShader(bm, 4507 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4508 mOverScrollBorder = new Paint(); 4509 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4510 mOverScrollBorder.setStrokeWidth(0); 4511 mOverScrollBorder.setColor(0xffbbbbbb); 4512 } 4513 4514 int top = 0; 4515 int right = computeRealHorizontalScrollRange(); 4516 int bottom = top + computeRealVerticalScrollRange(); 4517 // first draw the background and anchor to the top of the view 4518 canvas.save(); 4519 canvas.translate(mScrollX, mScrollY); 4520 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4521 - mScrollY, Region.Op.DIFFERENCE); 4522 canvas.drawPaint(mOverScrollBackground); 4523 canvas.restore(); 4524 // then draw the border 4525 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4526 // next clip the region for the content 4527 canvas.clipRect(0, top, right, bottom); 4528 } 4529 4530 @Override 4531 protected void onDraw(Canvas canvas) { 4532 if (inFullScreenMode()) { 4533 return; // no need to draw anything if we aren't visible. 4534 } 4535 // if mNativeClass is 0, the WebView is either destroyed or not 4536 // initialized. In either case, just draw the background color and return 4537 if (mNativeClass == 0) { 4538 canvas.drawColor(mBackgroundColor); 4539 return; 4540 } 4541 4542 // if both mContentWidth and mContentHeight are 0, it means there is no 4543 // valid Picture passed to WebView yet. This can happen when WebView 4544 // just starts. Draw the background and return. 4545 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4546 canvas.drawColor(mBackgroundColor); 4547 return; 4548 } 4549 4550 if (canvas.isHardwareAccelerated()) { 4551 mZoomManager.setHardwareAccelerated(); 4552 } else { 4553 mWebViewCore.resumeWebKitDraw(); 4554 } 4555 4556 int saveCount = canvas.save(); 4557 if (mInOverScrollMode && !getSettings() 4558 .getUseWebViewBackgroundForOverscrollBackground()) { 4559 drawOverScrollBackground(canvas); 4560 } 4561 if (mTitleBar != null) { 4562 canvas.translate(0, getTitleHeight()); 4563 } 4564 boolean drawJavaRings = !mTouchHighlightRegion.isEmpty() 4565 && (mTouchMode == TOUCH_INIT_MODE 4566 || mTouchMode == TOUCH_SHORTPRESS_START_MODE 4567 || mTouchMode == TOUCH_SHORTPRESS_MODE 4568 || mTouchMode == TOUCH_DONE_MODE); 4569 boolean drawNativeRings = !drawJavaRings; 4570 if (sDisableNavcache) { 4571 drawNativeRings = !drawJavaRings && !isInTouchMode(); 4572 } 4573 drawContent(canvas, drawNativeRings); 4574 canvas.restoreToCount(saveCount); 4575 4576 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4577 invalidate(); 4578 } 4579 mWebViewCore.signalRepaintDone(); 4580 4581 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4582 invalidate(); 4583 } 4584 4585 // paint the highlight in the end 4586 if (drawJavaRings) { 4587 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 4588 if (delay < ViewConfiguration.getTapTimeout()) { 4589 Rect r = mTouchHighlightRegion.getBounds(); 4590 postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 4591 } else { 4592 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4593 Rect r = new Rect(); 4594 while (iter.next(r)) { 4595 canvas.drawRect(r, mTouchHightlightPaint); 4596 } 4597 } 4598 } 4599 if (DEBUG_TOUCH_HIGHLIGHT) { 4600 if (getSettings().getNavDump()) { 4601 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4602 if (mTouchCrossHairColor == null) { 4603 mTouchCrossHairColor = new Paint(); 4604 mTouchCrossHairColor.setColor(Color.RED); 4605 } 4606 canvas.drawLine(mTouchHighlightX - mNavSlop, 4607 mTouchHighlightY - mNavSlop, mTouchHighlightX 4608 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4609 + 1, mTouchCrossHairColor); 4610 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4611 mTouchHighlightY - mNavSlop, mTouchHighlightX 4612 - mNavSlop, 4613 mTouchHighlightY + mNavSlop + 1, 4614 mTouchCrossHairColor); 4615 } 4616 } 4617 } 4618 } 4619 4620 private void removeTouchHighlight() { 4621 mWebViewCore.removeMessages(EventHub.HIT_TEST); 4622 mPrivateHandler.removeMessages(HIT_TEST_RESULT); 4623 setTouchHighlightRects(null); 4624 } 4625 4626 @Override 4627 public void setLayoutParams(ViewGroup.LayoutParams params) { 4628 if (params.height == LayoutParams.WRAP_CONTENT) { 4629 mWrapContent = true; 4630 } 4631 super.setLayoutParams(params); 4632 } 4633 4634 @Override 4635 public boolean performLongClick() { 4636 // performLongClick() is the result of a delayed message. If we switch 4637 // to windows overview, the WebView will be temporarily removed from the 4638 // view system. In that case, do nothing. 4639 if (getParent() == null) return false; 4640 4641 // A multi-finger gesture can look like a long press; make sure we don't take 4642 // long press actions if we're scaling. 4643 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4644 if (detector != null && detector.isInProgress()) { 4645 return false; 4646 } 4647 4648 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4649 // Send the click so that the textfield is in focus 4650 centerKeyPressOnTextField(); 4651 rebuildWebTextView(); 4652 } else { 4653 clearTextEntry(); 4654 } 4655 if (inEditingMode()) { 4656 // Since we just called rebuildWebTextView, the layout is not set 4657 // properly. Update it so it can correctly find the word to select. 4658 mWebTextView.ensureLayout(); 4659 // Provide a touch down event to WebTextView, which will allow it 4660 // to store the location to use in performLongClick. 4661 AbsoluteLayout.LayoutParams params 4662 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4663 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4664 mLastTouchTime, MotionEvent.ACTION_DOWN, 4665 mLastTouchX - params.x + mScrollX, 4666 mLastTouchY - params.y + mScrollY, 0); 4667 mWebTextView.dispatchTouchEvent(fake); 4668 return mWebTextView.performLongClick(); 4669 } 4670 if (mSelectingText) return false; // long click does nothing on selection 4671 /* if long click brings up a context menu, the super function 4672 * returns true and we're done. Otherwise, nothing happened when 4673 * the user clicked. */ 4674 if (super.performLongClick()) { 4675 return true; 4676 } 4677 /* In the case where the application hasn't already handled the long 4678 * click action, look for a word under the click. If one is found, 4679 * animate the text selection into view. 4680 * FIXME: no animation code yet */ 4681 final boolean isSelecting = selectText(); 4682 if (isSelecting) { 4683 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4684 } else if (focusCandidateIsEditableText()) { 4685 mSelectCallback = new SelectActionModeCallback(); 4686 mSelectCallback.setWebView(this); 4687 mSelectCallback.setTextSelected(false); 4688 startActionMode(mSelectCallback); 4689 } 4690 return isSelecting; 4691 } 4692 4693 /** 4694 * Select the word at the last click point. 4695 * 4696 * @hide This is an implementation detail. 4697 */ 4698 public boolean selectText() { 4699 int x = viewToContentX(mLastTouchX + mScrollX); 4700 int y = viewToContentY(mLastTouchY + mScrollY); 4701 return selectText(x, y); 4702 } 4703 4704 /** 4705 * Select the word at the indicated content coordinates. 4706 */ 4707 boolean selectText(int x, int y) { 4708 mWebViewCore.sendMessage(EventHub.SELECT_WORD_AT, x, y); 4709 return true; 4710 } 4711 4712 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4713 4714 @Override 4715 protected void onConfigurationChanged(Configuration newConfig) { 4716 mCachedOverlappingActionModeHeight = -1; 4717 if (mSelectingText && mOrientation != newConfig.orientation) { 4718 selectionDone(); 4719 } 4720 mOrientation = newConfig.orientation; 4721 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 4722 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4723 } 4724 } 4725 4726 /** 4727 * Keep track of the Callback so we can end its ActionMode or remove its 4728 * titlebar. 4729 */ 4730 private SelectActionModeCallback mSelectCallback; 4731 4732 // These values are possible options for didUpdateWebTextViewDimensions. 4733 private static final int FULLY_ON_SCREEN = 0; 4734 private static final int INTERSECTS_SCREEN = 1; 4735 private static final int ANYWHERE = 2; 4736 4737 /** 4738 * Check to see if the focused textfield/textarea is still on screen. If it 4739 * is, update the the dimensions and location of WebTextView. Otherwise, 4740 * remove the WebTextView. Should be called when the zoom level changes. 4741 * @param intersection How to determine whether the textfield/textarea is 4742 * still on screen. 4743 * @return boolean True if the textfield/textarea is still on screen and the 4744 * dimensions/location of WebTextView have been updated. 4745 */ 4746 private boolean didUpdateWebTextViewDimensions(int intersection) { 4747 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4748 Rect vBox = contentToViewRect(contentBounds); 4749 Rect visibleRect = new Rect(); 4750 calcOurVisibleRect(visibleRect); 4751 offsetByLayerScrollPosition(vBox); 4752 // If the textfield is on screen, place the WebTextView in 4753 // its new place, accounting for our new scroll/zoom values, 4754 // and adjust its textsize. 4755 boolean onScreen; 4756 switch (intersection) { 4757 case FULLY_ON_SCREEN: 4758 onScreen = visibleRect.contains(vBox); 4759 break; 4760 case INTERSECTS_SCREEN: 4761 onScreen = Rect.intersects(visibleRect, vBox); 4762 break; 4763 case ANYWHERE: 4764 onScreen = true; 4765 break; 4766 default: 4767 throw new AssertionError( 4768 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4769 } 4770 if (onScreen) { 4771 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4772 vBox.height()); 4773 mWebTextView.updateTextSize(); 4774 updateWebTextViewPadding(); 4775 return true; 4776 } else { 4777 // The textfield is now off screen. The user probably 4778 // was not zooming to see the textfield better. Remove 4779 // the WebTextView. If the user types a key, and the 4780 // textfield is still in focus, we will reconstruct 4781 // the WebTextView and scroll it back on screen. 4782 mWebTextView.remove(); 4783 return false; 4784 } 4785 } 4786 4787 private void offsetByLayerScrollPosition(Rect box) { 4788 if ((mCurrentScrollingLayerId != 0) 4789 && (mCurrentScrollingLayerId == nativeFocusCandidateLayerId())) { 4790 box.offsetTo(box.left - mScrollingLayerRect.left, 4791 box.top - mScrollingLayerRect.top); 4792 } 4793 } 4794 4795 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4796 boolean isPictureAfterFirstLayout) { 4797 if (mNativeClass == 0) 4798 return; 4799 boolean queueFull; 4800 queueFull = nativeSetBaseLayer(mNativeClass, layer, invalRegion, 4801 showVisualIndicator, isPictureAfterFirstLayout); 4802 4803 if (layer == 0 || isPictureAfterFirstLayout) { 4804 mWebViewCore.resumeWebKitDraw(); 4805 } else if (queueFull) { 4806 // temporarily disable webkit draw throttling 4807 // TODO: re-enable 4808 // mWebViewCore.pauseWebKitDraw(); 4809 } 4810 4811 if (mHTML5VideoViewProxy != null) { 4812 mHTML5VideoViewProxy.setBaseLayer(layer); 4813 } 4814 } 4815 4816 int getBaseLayer() { 4817 if (mNativeClass == 0) { 4818 return 0; 4819 } 4820 return nativeGetBaseLayer(); 4821 } 4822 4823 private void onZoomAnimationStart() { 4824 // If it is in password mode, turn it off so it does not draw misplaced. 4825 if (inEditingMode()) { 4826 mWebTextView.setVisibility(INVISIBLE); 4827 } 4828 } 4829 4830 private void onZoomAnimationEnd() { 4831 // adjust the edit text view if needed 4832 if (inEditingMode() 4833 && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) { 4834 // If it is a password field, start drawing the WebTextView once 4835 // again. 4836 mWebTextView.setVisibility(VISIBLE); 4837 } 4838 } 4839 4840 void onFixedLengthZoomAnimationStart() { 4841 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4842 onZoomAnimationStart(); 4843 } 4844 4845 void onFixedLengthZoomAnimationEnd() { 4846 if (!mBlockWebkitViewMessages && !mSelectingText) { 4847 WebViewCore.resumeUpdatePicture(mWebViewCore); 4848 } 4849 onZoomAnimationEnd(); 4850 } 4851 4852 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4853 Paint.DITHER_FLAG | 4854 Paint.SUBPIXEL_TEXT_FLAG; 4855 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4856 Paint.DITHER_FLAG; 4857 4858 private final DrawFilter mZoomFilter = 4859 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4860 // If we need to trade better quality for speed, set mScrollFilter to null 4861 private final DrawFilter mScrollFilter = 4862 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4863 4864 private void drawCoreAndCursorRing(Canvas canvas, int color, 4865 boolean drawCursorRing) { 4866 if (mDrawHistory) { 4867 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4868 canvas.drawPicture(mHistoryPicture); 4869 return; 4870 } 4871 if (mNativeClass == 0) return; 4872 4873 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4874 boolean animateScroll = ((!mScroller.isFinished() 4875 || mVelocityTracker != null) 4876 && (mTouchMode != TOUCH_DRAG_MODE || 4877 mHeldMotionless != MOTIONLESS_TRUE)) 4878 || mDeferTouchMode == TOUCH_DRAG_MODE; 4879 if (mTouchMode == TOUCH_DRAG_MODE) { 4880 if (mHeldMotionless == MOTIONLESS_PENDING) { 4881 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4882 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4883 mHeldMotionless = MOTIONLESS_FALSE; 4884 } 4885 if (mHeldMotionless == MOTIONLESS_FALSE) { 4886 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4887 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4888 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4889 .obtainMessage(AWAKEN_SCROLL_BARS), 4890 ViewConfiguration.getScrollDefaultDelay()); 4891 mHeldMotionless = MOTIONLESS_PENDING; 4892 } 4893 } 4894 int saveCount = canvas.save(); 4895 if (animateZoom) { 4896 mZoomManager.animateZoom(canvas); 4897 } else if (!canvas.isHardwareAccelerated()) { 4898 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4899 } 4900 4901 boolean UIAnimationsRunning = false; 4902 // Currently for each draw we compute the animation values; 4903 // We may in the future decide to do that independently. 4904 if (mNativeClass != 0 && !canvas.isHardwareAccelerated() 4905 && nativeEvaluateLayersAnimations(mNativeClass)) { 4906 UIAnimationsRunning = true; 4907 // If we have unfinished (or unstarted) animations, 4908 // we ask for a repaint. We only need to do this in software 4909 // rendering (with hardware rendering we already have a different 4910 // method of requesting a repaint) 4911 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 4912 invalidate(); 4913 } 4914 4915 // decide which adornments to draw 4916 int extras = DRAW_EXTRAS_NONE; 4917 if (mFindIsUp) { 4918 extras = DRAW_EXTRAS_FIND; 4919 } else if (mSelectingText) { 4920 extras = DRAW_EXTRAS_SELECTION; 4921 } else if (drawCursorRing) { 4922 extras = DRAW_EXTRAS_CURSOR_RING; 4923 } 4924 if (DebugFlags.WEB_VIEW) { 4925 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4926 + " mSelectingText=" + mSelectingText 4927 + " nativePageShouldHandleShiftAndArrows()=" 4928 + nativePageShouldHandleShiftAndArrows() 4929 + " animateZoom=" + animateZoom 4930 + " extras=" + extras); 4931 } 4932 4933 calcOurContentVisibleRectF(mVisibleContentRect); 4934 if (canvas.isHardwareAccelerated()) { 4935 Rect glRectViewport = mGLViewportEmpty ? null : mGLRectViewport; 4936 Rect viewRectViewport = mGLViewportEmpty ? null : mViewRectViewport; 4937 4938 int functor = nativeGetDrawGLFunction(mNativeClass, glRectViewport, 4939 viewRectViewport, mVisibleContentRect, getScale(), extras); 4940 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4941 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 4942 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 4943 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 4944 } 4945 4946 } else { 4947 DrawFilter df = null; 4948 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4949 df = mZoomFilter; 4950 } else if (animateScroll) { 4951 df = mScrollFilter; 4952 } 4953 canvas.setDrawFilter(df); 4954 // XXX: Revisit splitting content. Right now it causes a 4955 // synchronization problem with layers. 4956 int content = nativeDraw(canvas, mVisibleContentRect, color, 4957 extras, false); 4958 canvas.setDrawFilter(null); 4959 if (!mBlockWebkitViewMessages && content != 0) { 4960 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4961 } 4962 } 4963 4964 canvas.restoreToCount(saveCount); 4965 if (mSelectingText) { 4966 drawTextSelectionHandles(canvas); 4967 } 4968 4969 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4970 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4971 mTouchMode = TOUCH_SHORTPRESS_MODE; 4972 } 4973 } 4974 if (mFocusSizeChanged) { 4975 mFocusSizeChanged = false; 4976 // If we are zooming, this will get handled above, when the zoom 4977 // finishes. We also do not need to do this unless the WebTextView 4978 // is showing. With hardware acceleration, the pageSwapCallback() 4979 // updates the WebTextView position in sync with page swapping 4980 if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) { 4981 didUpdateWebTextViewDimensions(ANYWHERE); 4982 } 4983 } 4984 } 4985 4986 private void drawTextSelectionHandles(Canvas canvas) { 4987 if (mSelectHandleLeft == null) { 4988 mSelectHandleLeft = mContext.getResources().getDrawable( 4989 com.android.internal.R.drawable.text_select_handle_left); 4990 } 4991 int[] handles = new int[4]; 4992 getSelectionHandles(handles); 4993 int start_x = contentToViewDimension(handles[0]); 4994 int start_y = contentToViewDimension(handles[1]); 4995 int end_x = contentToViewDimension(handles[2]); 4996 int end_y = contentToViewDimension(handles[3]); 4997 // Magic formula copied from TextView 4998 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 4999 mSelectHandleLeft.setBounds(start_x, start_y, 5000 start_x + mSelectHandleLeft.getIntrinsicWidth(), 5001 start_y + mSelectHandleLeft.getIntrinsicHeight()); 5002 if (mSelectHandleRight == null) { 5003 mSelectHandleRight = mContext.getResources().getDrawable( 5004 com.android.internal.R.drawable.text_select_handle_right); 5005 } 5006 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 5007 mSelectHandleRight.setBounds(end_x, end_y, 5008 end_x + mSelectHandleRight.getIntrinsicWidth(), 5009 end_y + mSelectHandleRight.getIntrinsicHeight()); 5010 mSelectHandleLeft.draw(canvas); 5011 mSelectHandleRight.draw(canvas); 5012 } 5013 5014 /** 5015 * Takes an int[4] array as an output param with the values being 5016 * startX, startY, endX, endY 5017 */ 5018 private void getSelectionHandles(int[] handles) { 5019 handles[0] = mSelectCursorBase.right; 5020 handles[1] = mSelectCursorBase.bottom - 5021 (mSelectCursorBase.height() / 4); 5022 handles[2] = mSelectCursorExtent.left; 5023 handles[3] = mSelectCursorExtent.bottom 5024 - (mSelectCursorExtent.height() / 4); 5025 if (!nativeIsBaseFirst(mNativeClass)) { 5026 int swap = handles[0]; 5027 handles[0] = handles[2]; 5028 handles[2] = swap; 5029 swap = handles[1]; 5030 handles[1] = handles[3]; 5031 handles[3] = swap; 5032 } 5033 } 5034 5035 // draw history 5036 private boolean mDrawHistory = false; 5037 private Picture mHistoryPicture = null; 5038 private int mHistoryWidth = 0; 5039 private int mHistoryHeight = 0; 5040 5041 // Only check the flag, can be called from WebCore thread 5042 boolean drawHistory() { 5043 return mDrawHistory; 5044 } 5045 5046 int getHistoryPictureWidth() { 5047 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 5048 } 5049 5050 // Should only be called in UI thread 5051 void switchOutDrawHistory() { 5052 if (null == mWebViewCore) return; // CallbackProxy may trigger this 5053 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 5054 mDrawHistory = false; 5055 mHistoryPicture = null; 5056 invalidate(); 5057 int oldScrollX = mScrollX; 5058 int oldScrollY = mScrollY; 5059 mScrollX = pinLocX(mScrollX); 5060 mScrollY = pinLocY(mScrollY); 5061 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 5062 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 5063 } else { 5064 sendOurVisibleRect(); 5065 } 5066 } 5067 } 5068 5069 WebViewCore.CursorData cursorData() { 5070 WebViewCore.CursorData result = cursorDataNoPosition(); 5071 Point position = nativeCursorPosition(); 5072 result.mX = position.x; 5073 result.mY = position.y; 5074 return result; 5075 } 5076 5077 WebViewCore.CursorData cursorDataNoPosition() { 5078 WebViewCore.CursorData result = new WebViewCore.CursorData(); 5079 result.mMoveGeneration = nativeMoveGeneration(); 5080 result.mFrame = nativeCursorFramePointer(); 5081 return result; 5082 } 5083 5084 /** 5085 * Delete text from start to end in the focused textfield. If there is no 5086 * focus, or if start == end, silently fail. If start and end are out of 5087 * order, swap them. 5088 * @param start Beginning of selection to delete. 5089 * @param end End of selection to delete. 5090 */ 5091 /* package */ void deleteSelection(int start, int end) { 5092 mTextGeneration++; 5093 WebViewCore.TextSelectionData data 5094 = new WebViewCore.TextSelectionData(start, end, 0); 5095 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 5096 data); 5097 } 5098 5099 /** 5100 * Set the selection to (start, end) in the focused textfield. If start and 5101 * end are out of order, swap them. 5102 * @param start Beginning of selection. 5103 * @param end End of selection. 5104 */ 5105 /* package */ void setSelection(int start, int end) { 5106 if (mWebViewCore != null) { 5107 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 5108 } 5109 } 5110 5111 @Override 5112 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 5113 outAttrs.inputType = EditorInfo.IME_FLAG_NO_FULLSCREEN 5114 | EditorInfo.TYPE_CLASS_TEXT 5115 | EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT 5116 | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE 5117 | EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT 5118 | EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES; 5119 outAttrs.imeOptions = EditorInfo.IME_ACTION_NONE; 5120 5121 if (mInputConnection == null) { 5122 mInputConnection = new WebViewInputConnection(); 5123 } 5124 outAttrs.initialCapsMode = mInputConnection.getCursorCapsMode(InputType.TYPE_CLASS_TEXT); 5125 return mInputConnection; 5126 } 5127 5128 /** 5129 * Called in response to a message from webkit telling us that the soft 5130 * keyboard should be launched. 5131 */ 5132 private void displaySoftKeyboard(boolean isTextView) { 5133 InputMethodManager imm = (InputMethodManager) 5134 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 5135 5136 // bring it back to the default level scale so that user can enter text 5137 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 5138 if (zoom) { 5139 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 5140 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 5141 } 5142 if (isTextView) { 5143 rebuildWebTextView(); 5144 if (inEditingMode()) { 5145 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 5146 if (zoom) { 5147 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 5148 } 5149 return; 5150 } 5151 } 5152 // Used by plugins and contentEditable. 5153 // Also used if the navigation cache is out of date, and 5154 // does not recognize that a textfield is in focus. In that 5155 // case, use WebView as the targeted view. 5156 // see http://b/issue?id=2457459 5157 imm.showSoftInput(this, 0); 5158 } 5159 5160 // Called by WebKit to instruct the UI to hide the keyboard 5161 private void hideSoftKeyboard() { 5162 InputMethodManager imm = InputMethodManager.peekInstance(); 5163 if (imm != null && (imm.isActive(this) 5164 || (inEditingMode() && imm.isActive(mWebTextView)))) { 5165 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 5166 } 5167 } 5168 5169 /* 5170 * This method checks the current focus and cursor and potentially rebuilds 5171 * mWebTextView to have the appropriate properties, such as password, 5172 * multiline, and what text it contains. It also removes it if necessary. 5173 */ 5174 /* package */ void rebuildWebTextView() { 5175 if (!sEnableWebTextView) { 5176 return; // always use WebKit's text entry 5177 } 5178 // If the WebView does not have focus, do nothing until it gains focus. 5179 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 5180 return; 5181 } 5182 boolean alreadyThere = inEditingMode(); 5183 // inEditingMode can only return true if mWebTextView is non-null, 5184 // so we can safely call remove() if (alreadyThere) 5185 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 5186 if (alreadyThere) { 5187 mWebTextView.remove(); 5188 } 5189 return; 5190 } 5191 // At this point, we know we have found an input field, so go ahead 5192 // and create the WebTextView if necessary. 5193 if (mWebTextView == null) { 5194 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 5195 // Initialize our generation number. 5196 mTextGeneration = 0; 5197 } 5198 mWebTextView.updateTextSize(); 5199 updateWebTextViewPosition(); 5200 String text = nativeFocusCandidateText(); 5201 int nodePointer = nativeFocusCandidatePointer(); 5202 // This needs to be called before setType, which may call 5203 // requestFormData, and it needs to have the correct nodePointer. 5204 mWebTextView.setNodePointer(nodePointer); 5205 mWebTextView.setType(nativeFocusCandidateType()); 5206 // Gravity needs to be set after setType 5207 mWebTextView.setGravityForRtl(nativeFocusCandidateIsRtlText()); 5208 if (null == text) { 5209 if (DebugFlags.WEB_VIEW) { 5210 Log.v(LOGTAG, "rebuildWebTextView null == text"); 5211 } 5212 text = ""; 5213 } 5214 mWebTextView.setTextAndKeepSelection(text); 5215 InputMethodManager imm = InputMethodManager.peekInstance(); 5216 if (imm != null && imm.isActive(mWebTextView)) { 5217 imm.restartInput(mWebTextView); 5218 mWebTextView.clearComposingText(); 5219 } 5220 if (isFocused()) { 5221 mWebTextView.requestFocus(); 5222 } 5223 } 5224 5225 private void updateWebTextViewPosition() { 5226 Rect visibleRect = new Rect(); 5227 calcOurContentVisibleRect(visibleRect); 5228 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 5229 // should be in content coordinates. 5230 Rect bounds = nativeFocusCandidateNodeBounds(); 5231 Rect vBox = contentToViewRect(bounds); 5232 offsetByLayerScrollPosition(vBox); 5233 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 5234 if (!Rect.intersects(bounds, visibleRect)) { 5235 revealSelection(); 5236 } 5237 updateWebTextViewPadding(); 5238 } 5239 5240 /** 5241 * Update the padding of mWebTextView based on the native textfield/textarea 5242 */ 5243 void updateWebTextViewPadding() { 5244 Rect paddingRect = nativeFocusCandidatePaddingRect(); 5245 if (paddingRect != null) { 5246 // Use contentToViewDimension since these are the dimensions of 5247 // the padding. 5248 mWebTextView.setPadding( 5249 contentToViewDimension(paddingRect.left), 5250 contentToViewDimension(paddingRect.top), 5251 contentToViewDimension(paddingRect.right), 5252 contentToViewDimension(paddingRect.bottom)); 5253 } 5254 } 5255 5256 /** 5257 * Tell webkit to put the cursor on screen. 5258 */ 5259 /* package */ void revealSelection() { 5260 if (mWebViewCore != null) { 5261 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 5262 } 5263 } 5264 5265 /** 5266 * Called by WebTextView to find saved form data associated with the 5267 * textfield 5268 * @param name Name of the textfield. 5269 * @param nodePointer Pointer to the node of the textfield, so it can be 5270 * compared to the currently focused textfield when the data is 5271 * retrieved. 5272 * @param autoFillable true if WebKit has determined this field is part of 5273 * a form that can be auto filled. 5274 * @param autoComplete true if the attribute "autocomplete" is set to true 5275 * on the textfield. 5276 */ 5277 /* package */ void requestFormData(String name, int nodePointer, 5278 boolean autoFillable, boolean autoComplete) { 5279 if (mWebViewCore.getSettings().getSaveFormData()) { 5280 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 5281 update.arg1 = nodePointer; 5282 RequestFormData updater = new RequestFormData(name, getUrl(), 5283 update, autoFillable, autoComplete); 5284 Thread t = new Thread(updater); 5285 t.start(); 5286 } 5287 } 5288 5289 /** 5290 * Pass a message to find out the <label> associated with the <input> 5291 * identified by nodePointer 5292 * @param framePointer Pointer to the frame containing the <input> node 5293 * @param nodePointer Pointer to the node for which a <label> is desired. 5294 */ 5295 /* package */ void requestLabel(int framePointer, int nodePointer) { 5296 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 5297 nodePointer); 5298 } 5299 5300 /* 5301 * This class requests an Adapter for the WebTextView which shows past 5302 * entries stored in the database. It is a Runnable so that it can be done 5303 * in its own thread, without slowing down the UI. 5304 */ 5305 private class RequestFormData implements Runnable { 5306 private String mName; 5307 private String mUrl; 5308 private Message mUpdateMessage; 5309 private boolean mAutoFillable; 5310 private boolean mAutoComplete; 5311 private WebSettings mWebSettings; 5312 5313 public RequestFormData(String name, String url, Message msg, 5314 boolean autoFillable, boolean autoComplete) { 5315 mName = name; 5316 mUrl = WebTextView.urlForAutoCompleteData(url); 5317 mUpdateMessage = msg; 5318 mAutoFillable = autoFillable; 5319 mAutoComplete = autoComplete; 5320 mWebSettings = getSettings(); 5321 } 5322 5323 @Override 5324 public void run() { 5325 ArrayList<String> pastEntries = new ArrayList<String>(); 5326 5327 if (mAutoFillable) { 5328 // Note that code inside the adapter click handler in WebTextView depends 5329 // on the AutoFill item being at the top of the drop down list. If you change 5330 // the order, make sure to do it there too! 5331 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 5332 pastEntries.add(getResources().getText( 5333 com.android.internal.R.string.autofill_this_form).toString() + 5334 " " + 5335 mAutoFillData.getPreviewString()); 5336 mWebTextView.setAutoFillProfileIsSet(true); 5337 } else { 5338 // There is no autofill profile set up yet, so add an option that 5339 // will invite the user to set their profile up. 5340 pastEntries.add(getResources().getText( 5341 com.android.internal.R.string.setup_autofill).toString()); 5342 mWebTextView.setAutoFillProfileIsSet(false); 5343 } 5344 } 5345 5346 if (mAutoComplete) { 5347 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 5348 } 5349 5350 if (pastEntries.size() > 0) { 5351 AutoCompleteAdapter adapter = new 5352 AutoCompleteAdapter(mContext, pastEntries); 5353 mUpdateMessage.obj = adapter; 5354 mUpdateMessage.sendToTarget(); 5355 } 5356 } 5357 } 5358 5359 /** 5360 * Dump the display tree to "/sdcard/displayTree.txt" 5361 * 5362 * @hide debug only 5363 */ 5364 public void dumpDisplayTree() { 5365 nativeDumpDisplayTree(getUrl()); 5366 } 5367 5368 /** 5369 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 5370 * "/sdcard/domTree.txt" 5371 * 5372 * @hide debug only 5373 */ 5374 public void dumpDomTree(boolean toFile) { 5375 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 5376 } 5377 5378 /** 5379 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 5380 * to "/sdcard/renderTree.txt" 5381 * 5382 * @hide debug only 5383 */ 5384 public void dumpRenderTree(boolean toFile) { 5385 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 5386 } 5387 5388 /** 5389 * Called by DRT on UI thread, need to proxy to WebCore thread. 5390 * 5391 * @hide debug only 5392 */ 5393 public void useMockDeviceOrientation() { 5394 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 5395 } 5396 5397 /** 5398 * Called by DRT on WebCore thread. 5399 * 5400 * @hide debug only 5401 */ 5402 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 5403 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 5404 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 5405 canProvideGamma, gamma); 5406 } 5407 5408 // This is used to determine long press with the center key. Does not 5409 // affect long press with the trackball/touch. 5410 private boolean mGotCenterDown = false; 5411 5412 @Override 5413 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 5414 if (mBlockWebkitViewMessages) { 5415 return false; 5416 } 5417 // send complex characters to webkit for use by JS and plugins 5418 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 5419 // pass the key to DOM 5420 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5421 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5422 // return true as DOM handles the key 5423 return true; 5424 } 5425 return false; 5426 } 5427 5428 private boolean isEnterActionKey(int keyCode) { 5429 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 5430 || keyCode == KeyEvent.KEYCODE_ENTER 5431 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 5432 } 5433 5434 @Override 5435 public boolean onKeyDown(int keyCode, KeyEvent event) { 5436 if (DebugFlags.WEB_VIEW) { 5437 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 5438 + "keyCode=" + keyCode 5439 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5440 } 5441 if (mBlockWebkitViewMessages) { 5442 return false; 5443 } 5444 5445 // don't implement accelerator keys here; defer to host application 5446 if (event.isCtrlPressed()) { 5447 return false; 5448 } 5449 5450 if (mNativeClass == 0) { 5451 return false; 5452 } 5453 5454 // do this hack up front, so it always works, regardless of touch-mode 5455 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 5456 mAutoRedraw = !mAutoRedraw; 5457 if (mAutoRedraw) { 5458 invalidate(); 5459 } 5460 return true; 5461 } 5462 5463 // Bubble up the key event if 5464 // 1. it is a system key; or 5465 // 2. the host application wants to handle it; 5466 if (event.isSystem() 5467 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5468 return false; 5469 } 5470 5471 // accessibility support 5472 if (accessibilityScriptInjected()) { 5473 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5474 // if an accessibility script is injected we delegate to it the key handling. 5475 // this script is a screen reader which is a fully fledged solution for blind 5476 // users to navigate in and interact with web pages. 5477 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5478 return true; 5479 } else { 5480 // Clean up if accessibility was disabled after loading the current URL. 5481 mAccessibilityScriptInjected = false; 5482 } 5483 } else if (mAccessibilityInjector != null) { 5484 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5485 if (mAccessibilityInjector.onKeyEvent(event)) { 5486 // if an accessibility injector is present (no JavaScript enabled or the site 5487 // opts out injecting our JavaScript screen reader) we let it decide whether 5488 // to act on and consume the event. 5489 return true; 5490 } 5491 } else { 5492 // Clean up if accessibility was disabled after loading the current URL. 5493 mAccessibilityInjector = null; 5494 } 5495 } 5496 5497 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 5498 if (event.hasNoModifiers()) { 5499 pageUp(false); 5500 return true; 5501 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5502 pageUp(true); 5503 return true; 5504 } 5505 } 5506 5507 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 5508 if (event.hasNoModifiers()) { 5509 pageDown(false); 5510 return true; 5511 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5512 pageDown(true); 5513 return true; 5514 } 5515 } 5516 5517 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 5518 pageUp(true); 5519 return true; 5520 } 5521 5522 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 5523 pageDown(true); 5524 return true; 5525 } 5526 5527 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5528 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5529 switchOutDrawHistory(); 5530 if (nativePageShouldHandleShiftAndArrows()) { 5531 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 5532 return true; 5533 } 5534 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5535 switch (keyCode) { 5536 case KeyEvent.KEYCODE_DPAD_UP: 5537 pageUp(true); 5538 return true; 5539 case KeyEvent.KEYCODE_DPAD_DOWN: 5540 pageDown(true); 5541 return true; 5542 case KeyEvent.KEYCODE_DPAD_LEFT: 5543 nativeClearCursor(); // start next trackball movement from page edge 5544 return pinScrollTo(0, mScrollY, true, 0); 5545 case KeyEvent.KEYCODE_DPAD_RIGHT: 5546 nativeClearCursor(); // start next trackball movement from page edge 5547 return pinScrollTo(mContentWidth, mScrollY, true, 0); 5548 } 5549 } 5550 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 5551 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 5552 return true; 5553 } 5554 // Bubble up the key event as WebView doesn't handle it 5555 return false; 5556 } 5557 5558 if (isEnterActionKey(keyCode)) { 5559 switchOutDrawHistory(); 5560 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 5561 || nativeCursorWantsKeyEvents(); 5562 if (event.getRepeatCount() == 0) { 5563 if (mSelectingText) { 5564 return true; // discard press if copy in progress 5565 } 5566 mGotCenterDown = true; 5567 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5568 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 5569 if (!wantsKeyEvents) return true; 5570 } 5571 // Bubble up the key event as WebView doesn't handle it 5572 if (!wantsKeyEvents) return false; 5573 } 5574 5575 if (getSettings().getNavDump()) { 5576 switch (keyCode) { 5577 case KeyEvent.KEYCODE_4: 5578 dumpDisplayTree(); 5579 break; 5580 case KeyEvent.KEYCODE_5: 5581 case KeyEvent.KEYCODE_6: 5582 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5583 break; 5584 case KeyEvent.KEYCODE_7: 5585 case KeyEvent.KEYCODE_8: 5586 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5587 break; 5588 } 5589 } 5590 5591 if (nativeCursorIsTextInput()) { 5592 // This message will put the node in focus, for the DOM's notion 5593 // of focus. 5594 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5595 nativeCursorNodePointer()); 5596 // This will bring up the WebTextView and put it in focus, for 5597 // our view system's notion of focus 5598 rebuildWebTextView(); 5599 // Now we need to pass the event to it 5600 if (inEditingMode()) { 5601 mWebTextView.setDefaultSelection(); 5602 return mWebTextView.dispatchKeyEvent(event); 5603 } 5604 } else if (nativeHasFocusNode()) { 5605 // In this case, the cursor is not on a text input, but the focus 5606 // might be. Check it, and if so, hand over to the WebTextView. 5607 rebuildWebTextView(); 5608 if (inEditingMode()) { 5609 mWebTextView.setDefaultSelection(); 5610 return mWebTextView.dispatchKeyEvent(event); 5611 } 5612 } 5613 5614 // TODO: should we pass all the keys to DOM or check the meta tag 5615 if (nativeCursorWantsKeyEvents() || true) { 5616 // pass the key to DOM 5617 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5618 // return true as DOM handles the key 5619 return true; 5620 } 5621 5622 // Bubble up the key event as WebView doesn't handle it 5623 return false; 5624 } 5625 5626 @Override 5627 public boolean onKeyUp(int keyCode, KeyEvent event) { 5628 if (DebugFlags.WEB_VIEW) { 5629 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5630 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5631 } 5632 if (mBlockWebkitViewMessages) { 5633 return false; 5634 } 5635 5636 if (mNativeClass == 0) { 5637 return false; 5638 } 5639 5640 // special CALL handling when cursor node's href is "tel:XXX" 5641 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5642 String text = nativeCursorText(); 5643 if (!nativeCursorIsTextInput() && text != null 5644 && text.startsWith(SCHEME_TEL)) { 5645 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5646 getContext().startActivity(intent); 5647 return true; 5648 } 5649 } 5650 5651 // Bubble up the key event if 5652 // 1. it is a system key; or 5653 // 2. the host application wants to handle it; 5654 if (event.isSystem() 5655 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5656 return false; 5657 } 5658 5659 // accessibility support 5660 if (accessibilityScriptInjected()) { 5661 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5662 // if an accessibility script is injected we delegate to it the key handling. 5663 // this script is a screen reader which is a fully fledged solution for blind 5664 // users to navigate in and interact with web pages. 5665 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5666 return true; 5667 } else { 5668 // Clean up if accessibility was disabled after loading the current URL. 5669 mAccessibilityScriptInjected = false; 5670 } 5671 } else if (mAccessibilityInjector != null) { 5672 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5673 if (mAccessibilityInjector.onKeyEvent(event)) { 5674 // if an accessibility injector is present (no JavaScript enabled or the site 5675 // opts out injecting our JavaScript screen reader) we let it decide whether to 5676 // act on and consume the event. 5677 return true; 5678 } 5679 } else { 5680 // Clean up if accessibility was disabled after loading the current URL. 5681 mAccessibilityInjector = null; 5682 } 5683 } 5684 5685 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5686 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5687 if (nativePageShouldHandleShiftAndArrows()) { 5688 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5689 return true; 5690 } 5691 // always handle the navigation keys in the UI thread 5692 // Bubble up the key event as WebView doesn't handle it 5693 return false; 5694 } 5695 5696 if (isEnterActionKey(keyCode)) { 5697 // remove the long press message first 5698 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5699 mGotCenterDown = false; 5700 5701 if (mSelectingText) { 5702 copySelection(); 5703 selectionDone(); 5704 return true; // discard press if copy in progress 5705 } 5706 5707 if (!sDisableNavcache) { 5708 // perform the single click 5709 Rect visibleRect = sendOurVisibleRect(); 5710 // Note that sendOurVisibleRect calls viewToContent, so the 5711 // coordinates should be in content coordinates. 5712 if (!nativeCursorIntersects(visibleRect)) { 5713 return false; 5714 } 5715 WebViewCore.CursorData data = cursorData(); 5716 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5717 playSoundEffect(SoundEffectConstants.CLICK); 5718 if (nativeCursorIsTextInput()) { 5719 rebuildWebTextView(); 5720 centerKeyPressOnTextField(); 5721 if (inEditingMode()) { 5722 mWebTextView.setDefaultSelection(); 5723 } 5724 return true; 5725 } 5726 clearTextEntry(); 5727 nativeShowCursorTimed(); 5728 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5729 return true; 5730 } 5731 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5732 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5733 nativeCursorNodePointer()); 5734 return true; 5735 } 5736 } 5737 } 5738 5739 // TODO: should we pass all the keys to DOM or check the meta tag 5740 if (nativeCursorWantsKeyEvents() || true) { 5741 // pass the key to DOM 5742 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5743 // return true as DOM handles the key 5744 return true; 5745 } 5746 5747 // Bubble up the key event as WebView doesn't handle it 5748 return false; 5749 } 5750 5751 private boolean startSelectActionMode() { 5752 mSelectCallback = new SelectActionModeCallback(); 5753 mSelectCallback.setWebView(this); 5754 if (startActionMode(mSelectCallback) == null) { 5755 // There is no ActionMode, so do not allow the user to modify a 5756 // selection. 5757 selectionDone(); 5758 return false; 5759 } 5760 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 5761 return true; 5762 } 5763 5764 private void syncSelectionCursors() { 5765 mSelectCursorBaseLayerId = 5766 nativeGetHandleLayerId(mNativeClass, HANDLE_ID_BASE, mSelectCursorBase); 5767 mSelectCursorExtentLayerId = 5768 nativeGetHandleLayerId(mNativeClass, HANDLE_ID_EXTENT, mSelectCursorExtent); 5769 } 5770 5771 private boolean setupWebkitSelect() { 5772 syncSelectionCursors(); 5773 if (!startSelectActionMode()) { 5774 selectionDone(); 5775 return false; 5776 } 5777 mSelectingText = true; 5778 mTouchMode = TOUCH_DRAG_MODE; 5779 return true; 5780 } 5781 5782 private void updateWebkitSelection() { 5783 int[] handles = null; 5784 if (mSelectingText) { 5785 handles = new int[4]; 5786 handles[0] = mSelectCursorBase.centerX(); 5787 handles[1] = mSelectCursorBase.centerY(); 5788 handles[2] = mSelectCursorExtent.centerX(); 5789 handles[3] = mSelectCursorExtent.centerY(); 5790 } else { 5791 nativeSetTextSelection(mNativeClass, 0); 5792 } 5793 mWebViewCore.removeMessages(EventHub.SELECT_TEXT); 5794 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.SELECT_TEXT, handles); 5795 } 5796 5797 /** 5798 * Use this method to put the WebView into text selection mode. 5799 * Do not rely on this functionality; it will be deprecated in the future. 5800 * @deprecated This method is now obsolete. 5801 */ 5802 @Deprecated 5803 public void emulateShiftHeld() { 5804 checkThread(); 5805 } 5806 5807 /** 5808 * Select all of the text in this WebView. 5809 * 5810 * @hide This is an implementation detail. 5811 */ 5812 public void selectAll() { 5813 mWebViewCore.sendMessage(EventHub.SELECT_ALL); 5814 } 5815 5816 /** 5817 * Called when the selection has been removed. 5818 */ 5819 void selectionDone() { 5820 if (mSelectingText) { 5821 mSelectingText = false; 5822 // finish is idempotent, so this is fine even if selectionDone was 5823 // called by mSelectCallback.onDestroyActionMode 5824 mSelectCallback.finish(); 5825 mSelectCallback = null; 5826 updateWebkitSelection(); 5827 invalidate(); // redraw without selection 5828 mAutoScrollX = 0; 5829 mAutoScrollY = 0; 5830 mSentAutoScrollMessage = false; 5831 } 5832 } 5833 5834 /** 5835 * Copy the selection to the clipboard 5836 * 5837 * @hide This is an implementation detail. 5838 */ 5839 public boolean copySelection() { 5840 boolean copiedSomething = false; 5841 String selection = getSelection(); 5842 if (selection != null && selection != "") { 5843 if (DebugFlags.WEB_VIEW) { 5844 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5845 } 5846 Toast.makeText(mContext 5847 , com.android.internal.R.string.text_copied 5848 , Toast.LENGTH_SHORT).show(); 5849 copiedSomething = true; 5850 ClipboardManager cm = (ClipboardManager)getContext() 5851 .getSystemService(Context.CLIPBOARD_SERVICE); 5852 cm.setText(selection); 5853 int[] handles = new int[4]; 5854 getSelectionHandles(handles); 5855 mWebViewCore.sendMessage(EventHub.COPY_TEXT, handles); 5856 } 5857 invalidate(); // remove selection region and pointer 5858 return copiedSomething; 5859 } 5860 5861 /** 5862 * Cut the selected text into the clipboard 5863 * 5864 * @hide This is an implementation detail 5865 */ 5866 public void cutSelection() { 5867 copySelection(); 5868 int[] handles = new int[4]; 5869 getSelectionHandles(handles); 5870 mWebViewCore.sendMessage(EventHub.DELETE_TEXT, handles); 5871 } 5872 5873 /** 5874 * Paste text from the clipboard to the cursor position. 5875 * 5876 * @hide This is an implementation detail 5877 */ 5878 public void pasteFromClipboard() { 5879 ClipboardManager cm = (ClipboardManager)getContext() 5880 .getSystemService(Context.CLIPBOARD_SERVICE); 5881 ClipData clipData = cm.getPrimaryClip(); 5882 if (clipData != null) { 5883 ClipData.Item clipItem = clipData.getItemAt(0); 5884 CharSequence pasteText = clipItem.getText(); 5885 if (pasteText != null) { 5886 int[] handles = new int[4]; 5887 getSelectionHandles(handles); 5888 mWebViewCore.sendMessage(EventHub.DELETE_TEXT, handles); 5889 mWebViewCore.sendMessage(EventHub.INSERT_TEXT, 5890 pasteText.toString()); 5891 } 5892 } 5893 } 5894 5895 /** 5896 * @hide This is an implementation detail. 5897 */ 5898 public SearchBox getSearchBox() { 5899 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5900 return null; 5901 } 5902 return mWebViewCore.getBrowserFrame().getSearchBox(); 5903 } 5904 5905 /** 5906 * Returns the currently highlighted text as a string. 5907 */ 5908 String getSelection() { 5909 if (mNativeClass == 0) return ""; 5910 return nativeGetSelection(); 5911 } 5912 5913 @Override 5914 protected void onAttachedToWindow() { 5915 super.onAttachedToWindow(); 5916 if (hasWindowFocus()) setActive(true); 5917 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5918 if (mGlobalLayoutListener == null) { 5919 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5920 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5921 } 5922 if (mScrollChangedListener == null) { 5923 mScrollChangedListener = new InnerScrollChangedListener(); 5924 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5925 } 5926 5927 addAccessibilityApisToJavaScript(); 5928 5929 mTouchEventQueue.reset(); 5930 } 5931 5932 @Override 5933 protected void onDetachedFromWindow() { 5934 clearHelpers(); 5935 mZoomManager.dismissZoomPicker(); 5936 if (hasWindowFocus()) setActive(false); 5937 5938 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5939 if (mGlobalLayoutListener != null) { 5940 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5941 mGlobalLayoutListener = null; 5942 } 5943 if (mScrollChangedListener != null) { 5944 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5945 mScrollChangedListener = null; 5946 } 5947 5948 removeAccessibilityApisFromJavaScript(); 5949 5950 super.onDetachedFromWindow(); 5951 } 5952 5953 @Override 5954 protected void onVisibilityChanged(View changedView, int visibility) { 5955 super.onVisibilityChanged(changedView, visibility); 5956 // The zoomManager may be null if the webview is created from XML that 5957 // specifies the view's visibility param as not visible (see http://b/2794841) 5958 if (visibility != View.VISIBLE && mZoomManager != null) { 5959 mZoomManager.dismissZoomPicker(); 5960 } 5961 updateDrawingState(); 5962 } 5963 5964 /** 5965 * @deprecated WebView no longer needs to implement 5966 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5967 */ 5968 @Override 5969 // Cannot add @hide as this can always be accessed via the interface. 5970 @Deprecated 5971 public void onChildViewAdded(View parent, View child) {} 5972 5973 /** 5974 * @deprecated WebView no longer needs to implement 5975 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5976 */ 5977 @Override 5978 // Cannot add @hide as this can always be accessed via the interface. 5979 @Deprecated 5980 public void onChildViewRemoved(View p, View child) {} 5981 5982 /** 5983 * @deprecated WebView should not have implemented 5984 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5985 */ 5986 @Override 5987 // Cannot add @hide as this can always be accessed via the interface. 5988 @Deprecated 5989 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5990 } 5991 5992 void setActive(boolean active) { 5993 if (active) { 5994 if (hasFocus()) { 5995 // If our window regained focus, and we have focus, then begin 5996 // drawing the cursor ring 5997 mDrawCursorRing = !inEditingMode(); 5998 setFocusControllerActive(true); 5999 } else { 6000 mDrawCursorRing = false; 6001 if (!inEditingMode()) { 6002 // If our window gained focus, but we do not have it, do not 6003 // draw the cursor ring. 6004 setFocusControllerActive(false); 6005 } 6006 // We do not call recordButtons here because we assume 6007 // that when we lost focus, or window focus, it got called with 6008 // false for the first parameter 6009 } 6010 } else { 6011 if (!mZoomManager.isZoomPickerVisible()) { 6012 /* 6013 * The external zoom controls come in their own window, so our 6014 * window loses focus. Our policy is to not draw the cursor ring 6015 * if our window is not focused, but this is an exception since 6016 * the user can still navigate the web page with the zoom 6017 * controls showing. 6018 */ 6019 mDrawCursorRing = false; 6020 } 6021 mKeysPressed.clear(); 6022 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6023 mTouchMode = TOUCH_DONE_MODE; 6024 setFocusControllerActive(false); 6025 } 6026 invalidate(); 6027 } 6028 6029 // To avoid drawing the cursor ring, and remove the TextView when our window 6030 // loses focus. 6031 @Override 6032 public void onWindowFocusChanged(boolean hasWindowFocus) { 6033 setActive(hasWindowFocus); 6034 if (hasWindowFocus) { 6035 JWebCoreJavaBridge.setActiveWebView(this); 6036 if (mPictureUpdatePausedForFocusChange) { 6037 WebViewCore.resumeUpdatePicture(mWebViewCore); 6038 mPictureUpdatePausedForFocusChange = false; 6039 } 6040 } else { 6041 JWebCoreJavaBridge.removeActiveWebView(this); 6042 final WebSettings settings = getSettings(); 6043 if (settings != null && settings.enableSmoothTransition() && 6044 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 6045 WebViewCore.pauseUpdatePicture(mWebViewCore); 6046 mPictureUpdatePausedForFocusChange = true; 6047 } 6048 } 6049 super.onWindowFocusChanged(hasWindowFocus); 6050 } 6051 6052 /* 6053 * Pass a message to WebCore Thread, telling the WebCore::Page's 6054 * FocusController to be "inactive" so that it will 6055 * not draw the blinking cursor. It gets set to "active" to draw the cursor 6056 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 6057 */ 6058 /* package */ void setFocusControllerActive(boolean active) { 6059 if (mWebViewCore == null) return; 6060 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 6061 // Need to send this message after the document regains focus. 6062 if (active && mListBoxMessage != null) { 6063 mWebViewCore.sendMessage(mListBoxMessage); 6064 mListBoxMessage = null; 6065 } 6066 } 6067 6068 @Override 6069 protected void onFocusChanged(boolean focused, int direction, 6070 Rect previouslyFocusedRect) { 6071 if (DebugFlags.WEB_VIEW) { 6072 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 6073 } 6074 if (focused) { 6075 // When we regain focus, if we have window focus, resume drawing 6076 // the cursor ring 6077 if (hasWindowFocus()) { 6078 mDrawCursorRing = !inEditingMode(); 6079 setFocusControllerActive(true); 6080 //} else { 6081 // The WebView has gained focus while we do not have 6082 // windowfocus. When our window lost focus, we should have 6083 // called recordButtons(false...) 6084 } 6085 } else { 6086 // When we lost focus, unless focus went to the TextView (which is 6087 // true if we are in editing mode), stop drawing the cursor ring. 6088 mDrawCursorRing = false; 6089 if (!inEditingMode()) { 6090 setFocusControllerActive(false); 6091 } 6092 mKeysPressed.clear(); 6093 } 6094 6095 super.onFocusChanged(focused, direction, previouslyFocusedRect); 6096 } 6097 6098 void setGLRectViewport() { 6099 // Use the getGlobalVisibleRect() to get the intersection among the parents 6100 // visible == false means we're clipped - send a null rect down to indicate that 6101 // we should not draw 6102 boolean visible = getGlobalVisibleRect(mGLRectViewport); 6103 if (visible) { 6104 // Then need to invert the Y axis, just for GL 6105 View rootView = getRootView(); 6106 int rootViewHeight = rootView.getHeight(); 6107 mViewRectViewport.set(mGLRectViewport); 6108 int savedWebViewBottom = mGLRectViewport.bottom; 6109 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 6110 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 6111 mGLViewportEmpty = false; 6112 } else { 6113 mGLViewportEmpty = true; 6114 } 6115 calcOurContentVisibleRectF(mVisibleContentRect); 6116 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 6117 mGLViewportEmpty ? null : mViewRectViewport, 6118 mVisibleContentRect, getScale()); 6119 } 6120 6121 /** 6122 * @hide 6123 */ 6124 @Override 6125 protected boolean setFrame(int left, int top, int right, int bottom) { 6126 boolean changed = super.setFrame(left, top, right, bottom); 6127 if (!changed && mHeightCanMeasure) { 6128 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 6129 // in WebViewCore after we get the first layout. We do call 6130 // requestLayout() when we get contentSizeChanged(). But the View 6131 // system won't call onSizeChanged if the dimension is not changed. 6132 // In this case, we need to call sendViewSizeZoom() explicitly to 6133 // notify the WebKit about the new dimensions. 6134 sendViewSizeZoom(false); 6135 } 6136 setGLRectViewport(); 6137 return changed; 6138 } 6139 6140 @Override 6141 protected void onSizeChanged(int w, int h, int ow, int oh) { 6142 super.onSizeChanged(w, h, ow, oh); 6143 6144 // adjust the max viewport width depending on the view dimensions. This 6145 // is to ensure the scaling is not going insane. So do not shrink it if 6146 // the view size is temporarily smaller, e.g. when soft keyboard is up. 6147 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 6148 if (newMaxViewportWidth > sMaxViewportWidth) { 6149 sMaxViewportWidth = newMaxViewportWidth; 6150 } 6151 6152 mZoomManager.onSizeChanged(w, h, ow, oh); 6153 6154 if (mLoadedPicture != null && mDelaySetPicture == null) { 6155 // Size changes normally result in a new picture 6156 // Re-set the loaded picture to simulate that 6157 // However, do not update the base layer as that hasn't changed 6158 setNewPicture(mLoadedPicture, false); 6159 } 6160 } 6161 6162 @Override 6163 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 6164 super.onScrollChanged(l, t, oldl, oldt); 6165 if (!mInOverScrollMode) { 6166 sendOurVisibleRect(); 6167 // update WebKit if visible title bar height changed. The logic is same 6168 // as getVisibleTitleHeightImpl. 6169 int titleHeight = getTitleHeight(); 6170 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 6171 sendViewSizeZoom(false); 6172 } 6173 } 6174 } 6175 6176 @Override 6177 public boolean dispatchKeyEvent(KeyEvent event) { 6178 switch (event.getAction()) { 6179 case KeyEvent.ACTION_DOWN: 6180 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 6181 break; 6182 case KeyEvent.ACTION_MULTIPLE: 6183 // Always accept the action. 6184 break; 6185 case KeyEvent.ACTION_UP: 6186 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 6187 if (location == -1) { 6188 // We did not receive the key down for this key, so do not 6189 // handle the key up. 6190 return false; 6191 } else { 6192 // We did receive the key down. Handle the key up, and 6193 // remove it from our pressed keys. 6194 mKeysPressed.remove(location); 6195 } 6196 break; 6197 default: 6198 // Accept the action. This should not happen, unless a new 6199 // action is added to KeyEvent. 6200 break; 6201 } 6202 if (inEditingMode() && mWebTextView.isFocused()) { 6203 // Ensure that the WebTextView gets the event, even if it does 6204 // not currently have a bounds. 6205 return mWebTextView.dispatchKeyEvent(event); 6206 } else { 6207 return super.dispatchKeyEvent(event); 6208 } 6209 } 6210 6211 /* 6212 * Here is the snap align logic: 6213 * 1. If it starts nearly horizontally or vertically, snap align; 6214 * 2. If there is a dramitic direction change, let it go; 6215 * 6216 * Adjustable parameters. Angle is the radians on a unit circle, limited 6217 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 6218 */ 6219 private static final float HSLOPE_TO_START_SNAP = .25f; 6220 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 6221 private static final float VSLOPE_TO_START_SNAP = 1.25f; 6222 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 6223 /* 6224 * These values are used to influence the average angle when entering 6225 * snap mode. If is is the first movement entering snap, we set the average 6226 * to the appropriate ideal. If the user is entering into snap after the 6227 * first movement, then we average the average angle with these values. 6228 */ 6229 private static final float ANGLE_VERT = 2f; 6230 private static final float ANGLE_HORIZ = 0f; 6231 /* 6232 * The modified moving average weight. 6233 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 6234 */ 6235 private static final float MMA_WEIGHT_N = 5; 6236 6237 private boolean hitFocusedPlugin(int contentX, int contentY) { 6238 if (DebugFlags.WEB_VIEW) { 6239 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 6240 Rect r = nativeFocusNodeBounds(); 6241 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 6242 + ", " + r.right + ", " + r.bottom + ")"); 6243 } 6244 return nativeFocusIsPlugin() 6245 && nativeFocusNodeBounds().contains(contentX, contentY); 6246 } 6247 6248 private boolean shouldForwardTouchEvent() { 6249 if (mFullScreenHolder != null) return true; 6250 if (mBlockWebkitViewMessages) return false; 6251 return mForwardTouchEvents 6252 && !mSelectingText 6253 && mPreventDefault != PREVENT_DEFAULT_IGNORE 6254 && mPreventDefault != PREVENT_DEFAULT_NO; 6255 } 6256 6257 private boolean inFullScreenMode() { 6258 return mFullScreenHolder != null; 6259 } 6260 6261 private void dismissFullScreenMode() { 6262 if (inFullScreenMode()) { 6263 mFullScreenHolder.hide(); 6264 mFullScreenHolder = null; 6265 invalidate(); 6266 } 6267 } 6268 6269 void onPinchToZoomAnimationStart() { 6270 // cancel the single touch handling 6271 cancelTouch(); 6272 onZoomAnimationStart(); 6273 } 6274 6275 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 6276 onZoomAnimationEnd(); 6277 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 6278 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 6279 // as it may trigger the unwanted fling. 6280 mTouchMode = TOUCH_PINCH_DRAG; 6281 mConfirmMove = true; 6282 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 6283 } 6284 6285 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 6286 // layer is found. 6287 private void startScrollingLayer(float x, float y) { 6288 int contentX = viewToContentX((int) x + mScrollX); 6289 int contentY = viewToContentY((int) y + mScrollY); 6290 mCurrentScrollingLayerId = nativeScrollableLayer(contentX, contentY, 6291 mScrollingLayerRect, mScrollingLayerBounds); 6292 if (mCurrentScrollingLayerId != 0) { 6293 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6294 } 6295 } 6296 6297 // 1/(density * density) used to compute the distance between points. 6298 // Computed in init(). 6299 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 6300 6301 // The distance between two points reported in onTouchEvent scaled by the 6302 // density of the screen. 6303 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 6304 6305 @Override 6306 public boolean onHoverEvent(MotionEvent event) { 6307 if (mNativeClass == 0) { 6308 return false; 6309 } 6310 WebViewCore.CursorData data = cursorDataNoPosition(); 6311 data.mX = viewToContentX((int) event.getX() + mScrollX); 6312 data.mY = viewToContentY((int) event.getY() + mScrollY); 6313 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 6314 return true; 6315 } 6316 6317 @Override 6318 public boolean onTouchEvent(MotionEvent ev) { 6319 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 6320 return false; 6321 } 6322 6323 if (DebugFlags.WEB_VIEW) { 6324 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 6325 + " mTouchMode=" + mTouchMode 6326 + " numPointers=" + ev.getPointerCount()); 6327 } 6328 6329 // If WebKit wasn't interested in this multitouch gesture, enqueue 6330 // the event for handling directly rather than making the round trip 6331 // to WebKit and back. 6332 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 6333 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 6334 } else { 6335 mTouchEventQueue.enqueueTouchEvent(ev); 6336 } 6337 6338 // Since all events are handled asynchronously, we always want the gesture stream. 6339 return true; 6340 } 6341 6342 private float calculateDragAngle(int dx, int dy) { 6343 dx = Math.abs(dx); 6344 dy = Math.abs(dy); 6345 return (float) Math.atan2(dy, dx); 6346 } 6347 6348 /* 6349 * Common code for single touch and multi-touch. 6350 * (x, y) denotes current focus point, which is the touch point for single touch 6351 * and the middle point for multi-touch. 6352 */ 6353 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 6354 long eventTime = ev.getEventTime(); 6355 6356 // Due to the touch screen edge effect, a touch closer to the edge 6357 // always snapped to the edge. As getViewWidth() can be different from 6358 // getWidth() due to the scrollbar, adjusting the point to match 6359 // getViewWidth(). Same applied to the height. 6360 x = Math.min(x, getViewWidth() - 1); 6361 y = Math.min(y, getViewHeightWithTitle() - 1); 6362 6363 int deltaX = mLastTouchX - x; 6364 int deltaY = mLastTouchY - y; 6365 int contentX = viewToContentX(x + mScrollX); 6366 int contentY = viewToContentY(y + mScrollY); 6367 6368 switch (action) { 6369 case MotionEvent.ACTION_DOWN: { 6370 mPreventDefault = PREVENT_DEFAULT_NO; 6371 mConfirmMove = false; 6372 mInitialHitTestResult = null; 6373 if (!mScroller.isFinished()) { 6374 // stop the current scroll animation, but if this is 6375 // the start of a fling, allow it to add to the current 6376 // fling's velocity 6377 mScroller.abortAnimation(); 6378 mTouchMode = TOUCH_DRAG_START_MODE; 6379 mConfirmMove = true; 6380 nativeSetIsScrolling(false); 6381 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 6382 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 6383 if (sDisableNavcache) { 6384 removeTouchHighlight(); 6385 } 6386 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 6387 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 6388 } else { 6389 // commit the short press action for the previous tap 6390 doShortPress(); 6391 mTouchMode = TOUCH_INIT_MODE; 6392 mDeferTouchProcess = !mBlockWebkitViewMessages 6393 && (!inFullScreenMode() && mForwardTouchEvents) 6394 ? hitFocusedPlugin(contentX, contentY) 6395 : false; 6396 } 6397 } else { // the normal case 6398 mTouchMode = TOUCH_INIT_MODE; 6399 mDeferTouchProcess = !mBlockWebkitViewMessages 6400 && (!inFullScreenMode() && mForwardTouchEvents) 6401 ? hitFocusedPlugin(contentX, contentY) 6402 : false; 6403 if (!mBlockWebkitViewMessages) { 6404 mWebViewCore.sendMessage( 6405 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 6406 } 6407 if (sDisableNavcache) { 6408 TouchHighlightData data = new TouchHighlightData(); 6409 data.mX = contentX; 6410 data.mY = contentY; 6411 data.mNativeLayerRect = new Rect(); 6412 data.mNativeLayer = nativeScrollableLayer( 6413 contentX, contentY, data.mNativeLayerRect, null); 6414 data.mSlop = viewToContentDimension(mNavSlop); 6415 mTouchHighlightRegion.setEmpty(); 6416 if (!mBlockWebkitViewMessages) { 6417 mTouchHighlightRequested = System.currentTimeMillis(); 6418 mWebViewCore.sendMessageAtFrontOfQueue( 6419 EventHub.HIT_TEST, data); 6420 } 6421 if (DEBUG_TOUCH_HIGHLIGHT) { 6422 if (getSettings().getNavDump()) { 6423 mTouchHighlightX = x + mScrollX; 6424 mTouchHighlightY = y + mScrollY; 6425 mPrivateHandler.postDelayed(new Runnable() { 6426 @Override 6427 public void run() { 6428 mTouchHighlightX = mTouchHighlightY = 0; 6429 invalidate(); 6430 } 6431 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 6432 } 6433 } 6434 } 6435 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 6436 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 6437 (eventTime - mLastTouchUpTime), eventTime); 6438 } 6439 mSelectionStarted = false; 6440 if (mSelectingText && mSelectHandleLeft != null 6441 && mSelectHandleRight != null) { 6442 int shiftedY = y - getTitleHeight() + mScrollY; 6443 int shiftedX = x + mScrollX; 6444 if (mSelectHandleLeft.getBounds() 6445 .contains(shiftedX, shiftedY)) { 6446 mSelectionStarted = true; 6447 mSelectDraggingCursor = mSelectCursorBase; 6448 } else if (mSelectHandleRight.getBounds() 6449 .contains(shiftedX, shiftedY)) { 6450 mSelectionStarted = true; 6451 mSelectDraggingCursor = mSelectCursorExtent; 6452 } 6453 if (mSelectDraggingCursor != null) { 6454 mSelectDraggingOffset.set( 6455 mSelectDraggingCursor.left - contentX, 6456 mSelectDraggingCursor.top - contentY); 6457 } 6458 if (DebugFlags.WEB_VIEW) { 6459 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 6460 } 6461 } 6462 } 6463 // Trigger the link 6464 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 6465 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 6466 mPrivateHandler.sendEmptyMessageDelayed( 6467 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 6468 mPrivateHandler.sendEmptyMessageDelayed( 6469 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 6470 if (inFullScreenMode() || mDeferTouchProcess) { 6471 mPreventDefault = PREVENT_DEFAULT_YES; 6472 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 6473 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 6474 } else { 6475 mPreventDefault = PREVENT_DEFAULT_NO; 6476 } 6477 // pass the touch events from UI thread to WebCore thread 6478 if (shouldForwardTouchEvent()) { 6479 TouchEventData ted = new TouchEventData(); 6480 ted.mAction = action; 6481 ted.mIds = new int[1]; 6482 ted.mIds[0] = ev.getPointerId(0); 6483 ted.mPoints = new Point[1]; 6484 ted.mPoints[0] = new Point(contentX, contentY); 6485 ted.mPointsInView = new Point[1]; 6486 ted.mPointsInView[0] = new Point(x, y); 6487 ted.mMetaState = ev.getMetaState(); 6488 ted.mReprocess = mDeferTouchProcess; 6489 ted.mNativeLayer = nativeScrollableLayer( 6490 contentX, contentY, ted.mNativeLayerRect, null); 6491 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6492 mTouchEventQueue.preQueueTouchEventData(ted); 6493 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6494 if (mDeferTouchProcess) { 6495 // still needs to set them for compute deltaX/Y 6496 mLastTouchX = x; 6497 mLastTouchY = y; 6498 break; 6499 } 6500 if (!inFullScreenMode()) { 6501 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 6502 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6503 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6504 action, 0), TAP_TIMEOUT); 6505 } 6506 } 6507 } 6508 startTouch(x, y, eventTime); 6509 break; 6510 } 6511 case MotionEvent.ACTION_MOVE: { 6512 boolean firstMove = false; 6513 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 6514 >= mTouchSlopSquare) { 6515 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6516 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6517 mConfirmMove = true; 6518 firstMove = true; 6519 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6520 mTouchMode = TOUCH_INIT_MODE; 6521 } 6522 if (sDisableNavcache) { 6523 removeTouchHighlight(); 6524 } 6525 } 6526 if (mSelectingText && mSelectionStarted) { 6527 if (DebugFlags.WEB_VIEW) { 6528 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 6529 } 6530 ViewParent parent = getParent(); 6531 if (parent != null) { 6532 parent.requestDisallowInterceptTouchEvent(true); 6533 } 6534 if (deltaX != 0 || deltaY != 0) { 6535 mSelectDraggingCursor.offsetTo( 6536 contentX + mSelectDraggingOffset.x, 6537 contentY + mSelectDraggingOffset.y); 6538 updateWebkitSelection(); 6539 mLastTouchX = x; 6540 mLastTouchY = y; 6541 invalidate(); 6542 } 6543 break; 6544 } 6545 6546 // pass the touch events from UI thread to WebCore thread 6547 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 6548 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 6549 TouchEventData ted = new TouchEventData(); 6550 ted.mAction = action; 6551 ted.mIds = new int[1]; 6552 ted.mIds[0] = ev.getPointerId(0); 6553 ted.mPoints = new Point[1]; 6554 ted.mPoints[0] = new Point(contentX, contentY); 6555 ted.mPointsInView = new Point[1]; 6556 ted.mPointsInView[0] = new Point(x, y); 6557 ted.mMetaState = ev.getMetaState(); 6558 ted.mReprocess = mDeferTouchProcess; 6559 ted.mNativeLayer = mCurrentScrollingLayerId; 6560 ted.mNativeLayerRect.set(mScrollingLayerRect); 6561 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6562 mTouchEventQueue.preQueueTouchEventData(ted); 6563 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6564 mLastSentTouchTime = eventTime; 6565 if (mDeferTouchProcess) { 6566 break; 6567 } 6568 if (firstMove && !inFullScreenMode()) { 6569 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6570 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6571 action, 0), TAP_TIMEOUT); 6572 } 6573 } 6574 if (mTouchMode == TOUCH_DONE_MODE 6575 || mPreventDefault == PREVENT_DEFAULT_YES) { 6576 // no dragging during scroll zoom animation, or when prevent 6577 // default is yes 6578 break; 6579 } 6580 if (mVelocityTracker == null) { 6581 Log.e(LOGTAG, "Got null mVelocityTracker when " 6582 + "mPreventDefault = " + mPreventDefault 6583 + " mDeferTouchProcess = " + mDeferTouchProcess 6584 + " mTouchMode = " + mTouchMode); 6585 } else { 6586 mVelocityTracker.addMovement(ev); 6587 } 6588 6589 if (mTouchMode != TOUCH_DRAG_MODE && 6590 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6591 6592 if (!mConfirmMove) { 6593 break; 6594 } 6595 6596 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6597 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6598 // track mLastTouchTime as we may need to do fling at 6599 // ACTION_UP 6600 mLastTouchTime = eventTime; 6601 break; 6602 } 6603 6604 // Only lock dragging to one axis if we don't have a scale in progress. 6605 // Scaling implies free-roaming movement. Note this is only ever a question 6606 // if mZoomManager.supportsPanDuringZoom() is true. 6607 final ScaleGestureDetector detector = 6608 mZoomManager.getMultiTouchGestureDetector(); 6609 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6610 if (detector == null || !detector.isInProgress()) { 6611 // if it starts nearly horizontal or vertical, enforce it 6612 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6613 mSnapScrollMode = SNAP_X; 6614 mSnapPositive = deltaX > 0; 6615 mAverageAngle = ANGLE_HORIZ; 6616 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6617 mSnapScrollMode = SNAP_Y; 6618 mSnapPositive = deltaY > 0; 6619 mAverageAngle = ANGLE_VERT; 6620 } 6621 } 6622 6623 mTouchMode = TOUCH_DRAG_MODE; 6624 mLastTouchX = x; 6625 mLastTouchY = y; 6626 deltaX = 0; 6627 deltaY = 0; 6628 6629 startScrollingLayer(x, y); 6630 startDrag(); 6631 } 6632 6633 // do pan 6634 boolean done = false; 6635 boolean keepScrollBarsVisible = false; 6636 if (deltaX == 0 && deltaY == 0) { 6637 keepScrollBarsVisible = done = true; 6638 } else { 6639 mAverageAngle += 6640 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6641 / MMA_WEIGHT_N; 6642 if (mSnapScrollMode != SNAP_NONE) { 6643 if (mSnapScrollMode == SNAP_Y) { 6644 // radical change means getting out of snap mode 6645 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6646 mSnapScrollMode = SNAP_NONE; 6647 } 6648 } 6649 if (mSnapScrollMode == SNAP_X) { 6650 // radical change means getting out of snap mode 6651 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6652 mSnapScrollMode = SNAP_NONE; 6653 } 6654 } 6655 } else { 6656 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6657 mSnapScrollMode = SNAP_X; 6658 mSnapPositive = deltaX > 0; 6659 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6660 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6661 mSnapScrollMode = SNAP_Y; 6662 mSnapPositive = deltaY > 0; 6663 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6664 } 6665 } 6666 if (mSnapScrollMode != SNAP_NONE) { 6667 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6668 deltaY = 0; 6669 } else { 6670 deltaX = 0; 6671 } 6672 } 6673 mLastTouchX = x; 6674 mLastTouchY = y; 6675 6676 if (deltaX * deltaX + deltaY * deltaY > mTouchSlopSquare) { 6677 mHeldMotionless = MOTIONLESS_FALSE; 6678 nativeSetIsScrolling(true); 6679 } else { 6680 mHeldMotionless = MOTIONLESS_TRUE; 6681 nativeSetIsScrolling(false); 6682 keepScrollBarsVisible = true; 6683 } 6684 6685 mLastTouchTime = eventTime; 6686 } 6687 6688 doDrag(deltaX, deltaY); 6689 6690 // Turn off scrollbars when dragging a layer. 6691 if (keepScrollBarsVisible && 6692 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6693 if (mHeldMotionless != MOTIONLESS_TRUE) { 6694 mHeldMotionless = MOTIONLESS_TRUE; 6695 invalidate(); 6696 } 6697 // keep the scrollbar on the screen even there is no scroll 6698 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6699 false); 6700 // Post a message so that we'll keep them alive while we're not scrolling. 6701 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6702 .obtainMessage(AWAKEN_SCROLL_BARS), 6703 ViewConfiguration.getScrollDefaultDelay()); 6704 // return false to indicate that we can't pan out of the 6705 // view space 6706 return !done; 6707 } else { 6708 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6709 } 6710 break; 6711 } 6712 case MotionEvent.ACTION_UP: { 6713 if (!isFocused()) requestFocus(); 6714 // pass the touch events from UI thread to WebCore thread 6715 if (shouldForwardTouchEvent()) { 6716 TouchEventData ted = new TouchEventData(); 6717 ted.mIds = new int[1]; 6718 ted.mIds[0] = ev.getPointerId(0); 6719 ted.mAction = action; 6720 ted.mPoints = new Point[1]; 6721 ted.mPoints[0] = new Point(contentX, contentY); 6722 ted.mPointsInView = new Point[1]; 6723 ted.mPointsInView[0] = new Point(x, y); 6724 ted.mMetaState = ev.getMetaState(); 6725 ted.mReprocess = mDeferTouchProcess; 6726 ted.mNativeLayer = mCurrentScrollingLayerId; 6727 ted.mNativeLayerRect.set(mScrollingLayerRect); 6728 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6729 mTouchEventQueue.preQueueTouchEventData(ted); 6730 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6731 } 6732 mLastTouchUpTime = eventTime; 6733 if (mSentAutoScrollMessage) { 6734 mAutoScrollX = mAutoScrollY = 0; 6735 } 6736 switch (mTouchMode) { 6737 case TOUCH_DOUBLE_TAP_MODE: // double tap 6738 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6739 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6740 if (inFullScreenMode() || mDeferTouchProcess) { 6741 TouchEventData ted = new TouchEventData(); 6742 ted.mIds = new int[1]; 6743 ted.mIds[0] = ev.getPointerId(0); 6744 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6745 ted.mPoints = new Point[1]; 6746 ted.mPoints[0] = new Point(contentX, contentY); 6747 ted.mPointsInView = new Point[1]; 6748 ted.mPointsInView[0] = new Point(x, y); 6749 ted.mMetaState = ev.getMetaState(); 6750 ted.mReprocess = mDeferTouchProcess; 6751 ted.mNativeLayer = nativeScrollableLayer( 6752 contentX, contentY, 6753 ted.mNativeLayerRect, null); 6754 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6755 mTouchEventQueue.preQueueTouchEventData(ted); 6756 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6757 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6758 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6759 mTouchMode = TOUCH_DONE_MODE; 6760 } 6761 break; 6762 case TOUCH_INIT_MODE: // tap 6763 case TOUCH_SHORTPRESS_START_MODE: 6764 case TOUCH_SHORTPRESS_MODE: 6765 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6766 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6767 if (mConfirmMove) { 6768 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6769 " WebCore's response for touch down."); 6770 if (mPreventDefault != PREVENT_DEFAULT_YES 6771 && (computeMaxScrollX() > 0 6772 || computeMaxScrollY() > 0)) { 6773 // If the user has performed a very quick touch 6774 // sequence it is possible that we may get here 6775 // before WebCore has had a chance to process the events. 6776 // In this case, any call to preventDefault in the 6777 // JS touch handler will not have been executed yet. 6778 // Hence we will see both the UI (now) and WebCore 6779 // (when context switches) handling the event, 6780 // regardless of whether the web developer actually 6781 // doeses preventDefault in their touch handler. This 6782 // is the nature of our asynchronous touch model. 6783 6784 // we will not rewrite drag code here, but we 6785 // will try fling if it applies. 6786 WebViewCore.reducePriority(); 6787 // to get better performance, pause updating the 6788 // picture 6789 WebViewCore.pauseUpdatePicture(mWebViewCore); 6790 // fall through to TOUCH_DRAG_MODE 6791 } else { 6792 // WebKit may consume the touch event and modify 6793 // DOM. drawContentPicture() will be called with 6794 // animateSroll as true for better performance. 6795 // Force redraw in high-quality. 6796 invalidate(); 6797 break; 6798 } 6799 } else { 6800 if (mSelectingText) { 6801 // tapping on selection or controls does nothing 6802 if (!mSelectionStarted) { 6803 selectionDone(); 6804 } 6805 break; 6806 } 6807 // only trigger double tap if the WebView is 6808 // scalable 6809 if (mTouchMode == TOUCH_INIT_MODE 6810 && (canZoomIn() || canZoomOut())) { 6811 mPrivateHandler.sendEmptyMessageDelayed( 6812 RELEASE_SINGLE_TAP, ViewConfiguration 6813 .getDoubleTapTimeout()); 6814 } else { 6815 doShortPress(); 6816 } 6817 break; 6818 } 6819 case TOUCH_DRAG_MODE: 6820 case TOUCH_DRAG_LAYER_MODE: 6821 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6822 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6823 // if the user waits a while w/o moving before the 6824 // up, we don't want to do a fling 6825 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6826 if (mVelocityTracker == null) { 6827 Log.e(LOGTAG, "Got null mVelocityTracker when " 6828 + "mPreventDefault = " 6829 + mPreventDefault 6830 + " mDeferTouchProcess = " 6831 + mDeferTouchProcess); 6832 } else { 6833 mVelocityTracker.addMovement(ev); 6834 } 6835 // set to MOTIONLESS_IGNORE so that it won't keep 6836 // removing and sending message in 6837 // drawCoreAndCursorRing() 6838 mHeldMotionless = MOTIONLESS_IGNORE; 6839 doFling(); 6840 break; 6841 } else { 6842 if (mScroller.springBack(mScrollX, mScrollY, 0, 6843 computeMaxScrollX(), 0, 6844 computeMaxScrollY())) { 6845 invalidate(); 6846 } 6847 } 6848 // redraw in high-quality, as we're done dragging 6849 mHeldMotionless = MOTIONLESS_TRUE; 6850 invalidate(); 6851 // fall through 6852 case TOUCH_DRAG_START_MODE: 6853 // TOUCH_DRAG_START_MODE should not happen for the real 6854 // device as we almost certain will get a MOVE. But this 6855 // is possible on emulator. 6856 mLastVelocity = 0; 6857 WebViewCore.resumePriority(); 6858 if (!mSelectingText) { 6859 WebViewCore.resumeUpdatePicture(mWebViewCore); 6860 } 6861 break; 6862 } 6863 stopTouch(); 6864 break; 6865 } 6866 case MotionEvent.ACTION_CANCEL: { 6867 if (mTouchMode == TOUCH_DRAG_MODE) { 6868 mScroller.springBack(mScrollX, mScrollY, 0, 6869 computeMaxScrollX(), 0, computeMaxScrollY()); 6870 invalidate(); 6871 } 6872 cancelWebCoreTouchEvent(contentX, contentY, false); 6873 cancelTouch(); 6874 break; 6875 } 6876 } 6877 return true; 6878 } 6879 6880 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6881 TouchEventData ted = new TouchEventData(); 6882 ted.mAction = ev.getActionMasked(); 6883 final int count = ev.getPointerCount(); 6884 ted.mIds = new int[count]; 6885 ted.mPoints = new Point[count]; 6886 ted.mPointsInView = new Point[count]; 6887 for (int c = 0; c < count; c++) { 6888 ted.mIds[c] = ev.getPointerId(c); 6889 int x = viewToContentX((int) ev.getX(c) + mScrollX); 6890 int y = viewToContentY((int) ev.getY(c) + mScrollY); 6891 ted.mPoints[c] = new Point(x, y); 6892 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6893 } 6894 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6895 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6896 ted.mActionIndex = ev.getActionIndex(); 6897 } 6898 ted.mMetaState = ev.getMetaState(); 6899 ted.mReprocess = true; 6900 ted.mMotionEvent = MotionEvent.obtain(ev); 6901 ted.mSequence = sequence; 6902 mTouchEventQueue.preQueueTouchEventData(ted); 6903 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6904 cancelLongPress(); 6905 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6906 } 6907 6908 void handleMultiTouchInWebView(MotionEvent ev) { 6909 if (DebugFlags.WEB_VIEW) { 6910 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6911 + " mTouchMode=" + mTouchMode 6912 + " numPointers=" + ev.getPointerCount() 6913 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6914 } 6915 6916 final ScaleGestureDetector detector = 6917 mZoomManager.getMultiTouchGestureDetector(); 6918 6919 // A few apps use WebView but don't instantiate gesture detector. 6920 // We don't need to support multi touch for them. 6921 if (detector == null) return; 6922 6923 float x = ev.getX(); 6924 float y = ev.getY(); 6925 6926 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6927 detector.onTouchEvent(ev); 6928 6929 if (detector.isInProgress()) { 6930 if (DebugFlags.WEB_VIEW) { 6931 Log.v(LOGTAG, "detector is in progress"); 6932 } 6933 mLastTouchTime = ev.getEventTime(); 6934 x = detector.getFocusX(); 6935 y = detector.getFocusY(); 6936 6937 cancelLongPress(); 6938 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6939 if (!mZoomManager.supportsPanDuringZoom()) { 6940 return; 6941 } 6942 mTouchMode = TOUCH_DRAG_MODE; 6943 if (mVelocityTracker == null) { 6944 mVelocityTracker = VelocityTracker.obtain(); 6945 } 6946 } 6947 } 6948 6949 int action = ev.getActionMasked(); 6950 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6951 cancelTouch(); 6952 action = MotionEvent.ACTION_DOWN; 6953 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 6954 // set mLastTouchX/Y to the remaining points for multi-touch. 6955 mLastTouchX = Math.round(x); 6956 mLastTouchY = Math.round(y); 6957 } else if (action == MotionEvent.ACTION_MOVE) { 6958 // negative x or y indicate it is on the edge, skip it. 6959 if (x < 0 || y < 0) { 6960 return; 6961 } 6962 } 6963 6964 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6965 } 6966 6967 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6968 if (shouldForwardTouchEvent()) { 6969 if (removeEvents) { 6970 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6971 } 6972 TouchEventData ted = new TouchEventData(); 6973 ted.mIds = new int[1]; 6974 ted.mIds[0] = 0; 6975 ted.mPoints = new Point[1]; 6976 ted.mPoints[0] = new Point(x, y); 6977 ted.mPointsInView = new Point[1]; 6978 int viewX = contentToViewX(x) - mScrollX; 6979 int viewY = contentToViewY(y) - mScrollY; 6980 ted.mPointsInView[0] = new Point(viewX, viewY); 6981 ted.mAction = MotionEvent.ACTION_CANCEL; 6982 ted.mNativeLayer = nativeScrollableLayer( 6983 x, y, ted.mNativeLayerRect, null); 6984 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6985 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6986 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6987 6988 if (removeEvents) { 6989 // Mark this after sending the message above; we should 6990 // be willing to ignore the cancel event that we just sent. 6991 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6992 } 6993 } 6994 } 6995 6996 private void startTouch(float x, float y, long eventTime) { 6997 // Remember where the motion event started 6998 mStartTouchX = mLastTouchX = Math.round(x); 6999 mStartTouchY = mLastTouchY = Math.round(y); 7000 mLastTouchTime = eventTime; 7001 mVelocityTracker = VelocityTracker.obtain(); 7002 mSnapScrollMode = SNAP_NONE; 7003 mPrivateHandler.sendEmptyMessageDelayed(UPDATE_SELECTION, 7004 ViewConfiguration.getTapTimeout()); 7005 } 7006 7007 private void startDrag() { 7008 WebViewCore.reducePriority(); 7009 // to get better performance, pause updating the picture 7010 WebViewCore.pauseUpdatePicture(mWebViewCore); 7011 nativeSetIsScrolling(true); 7012 7013 if (!mDragFromTextInput) { 7014 nativeHideCursor(); 7015 } 7016 7017 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 7018 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 7019 mZoomManager.invokeZoomPicker(); 7020 } 7021 } 7022 7023 private void doDrag(int deltaX, int deltaY) { 7024 if ((deltaX | deltaY) != 0) { 7025 int oldX = mScrollX; 7026 int oldY = mScrollY; 7027 int rangeX = computeMaxScrollX(); 7028 int rangeY = computeMaxScrollY(); 7029 // Check for the original scrolling layer in case we change 7030 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 7031 // reached the edge of a layer but mScrollingLayer will be non-zero 7032 // if we initiated the drag on a layer. 7033 if (mCurrentScrollingLayerId != 0) { 7034 final int contentX = viewToContentDimension(deltaX); 7035 final int contentY = viewToContentDimension(deltaY); 7036 7037 // Check the scrolling bounds to see if we will actually do any 7038 // scrolling. The rectangle is in document coordinates. 7039 final int maxX = mScrollingLayerRect.right; 7040 final int maxY = mScrollingLayerRect.bottom; 7041 final int resultX = Math.max(0, 7042 Math.min(mScrollingLayerRect.left + contentX, maxX)); 7043 final int resultY = Math.max(0, 7044 Math.min(mScrollingLayerRect.top + contentY, maxY)); 7045 7046 if (resultX != mScrollingLayerRect.left || 7047 resultY != mScrollingLayerRect.top) { 7048 // In case we switched to dragging the page. 7049 mTouchMode = TOUCH_DRAG_LAYER_MODE; 7050 deltaX = contentX; 7051 deltaY = contentY; 7052 oldX = mScrollingLayerRect.left; 7053 oldY = mScrollingLayerRect.top; 7054 rangeX = maxX; 7055 rangeY = maxY; 7056 } else { 7057 // Scroll the main page if we are not going to scroll the 7058 // layer. This does not reset mScrollingLayer in case the 7059 // user changes directions and the layer can scroll the 7060 // other way. 7061 mTouchMode = TOUCH_DRAG_MODE; 7062 } 7063 } 7064 7065 if (mOverScrollGlow != null) { 7066 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 7067 } 7068 7069 overScrollBy(deltaX, deltaY, oldX, oldY, 7070 rangeX, rangeY, 7071 mOverscrollDistance, mOverscrollDistance, true); 7072 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 7073 invalidate(); 7074 } 7075 } 7076 mZoomManager.keepZoomPickerVisible(); 7077 } 7078 7079 private void stopTouch() { 7080 if (mScroller.isFinished() && !mSelectingText 7081 && (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 7082 WebViewCore.resumePriority(); 7083 WebViewCore.resumeUpdatePicture(mWebViewCore); 7084 nativeSetIsScrolling(false); 7085 } 7086 7087 // we also use mVelocityTracker == null to tell us that we are 7088 // not "moving around", so we can take the slower/prettier 7089 // mode in the drawing code 7090 if (mVelocityTracker != null) { 7091 mVelocityTracker.recycle(); 7092 mVelocityTracker = null; 7093 } 7094 7095 // Release any pulled glows 7096 if (mOverScrollGlow != null) { 7097 mOverScrollGlow.releaseAll(); 7098 } 7099 7100 if (mSelectingText) { 7101 mSelectionStarted = false; 7102 syncSelectionCursors(); 7103 invalidate(); 7104 } 7105 } 7106 7107 private void cancelTouch() { 7108 // we also use mVelocityTracker == null to tell us that we are 7109 // not "moving around", so we can take the slower/prettier 7110 // mode in the drawing code 7111 if (mVelocityTracker != null) { 7112 mVelocityTracker.recycle(); 7113 mVelocityTracker = null; 7114 } 7115 7116 if ((mTouchMode == TOUCH_DRAG_MODE 7117 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 7118 WebViewCore.resumePriority(); 7119 WebViewCore.resumeUpdatePicture(mWebViewCore); 7120 nativeSetIsScrolling(false); 7121 } 7122 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 7123 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7124 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 7125 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 7126 if (sDisableNavcache) { 7127 removeTouchHighlight(); 7128 } 7129 mHeldMotionless = MOTIONLESS_TRUE; 7130 mTouchMode = TOUCH_DONE_MODE; 7131 nativeHideCursor(); 7132 } 7133 7134 @Override 7135 public boolean onGenericMotionEvent(MotionEvent event) { 7136 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 7137 switch (event.getAction()) { 7138 case MotionEvent.ACTION_SCROLL: { 7139 final float vscroll; 7140 final float hscroll; 7141 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 7142 vscroll = 0; 7143 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 7144 } else { 7145 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 7146 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 7147 } 7148 if (hscroll != 0 || vscroll != 0) { 7149 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 7150 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 7151 if (pinScrollBy(hdelta, vdelta, false, 0)) { 7152 return true; 7153 } 7154 } 7155 } 7156 } 7157 } 7158 return super.onGenericMotionEvent(event); 7159 } 7160 7161 private long mTrackballFirstTime = 0; 7162 private long mTrackballLastTime = 0; 7163 private float mTrackballRemainsX = 0.0f; 7164 private float mTrackballRemainsY = 0.0f; 7165 private int mTrackballXMove = 0; 7166 private int mTrackballYMove = 0; 7167 private boolean mSelectingText = false; 7168 private boolean mSelectionStarted = false; 7169 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 7170 private static final int TRACKBALL_TIMEOUT = 200; 7171 private static final int TRACKBALL_WAIT = 100; 7172 private static final int TRACKBALL_SCALE = 400; 7173 private static final int TRACKBALL_SCROLL_COUNT = 5; 7174 private static final int TRACKBALL_MOVE_COUNT = 10; 7175 private static final int TRACKBALL_MULTIPLIER = 3; 7176 private static final int SELECT_CURSOR_OFFSET = 16; 7177 private static final int SELECT_SCROLL = 5; 7178 private int mSelectX = 0; 7179 private int mSelectY = 0; 7180 private boolean mFocusSizeChanged = false; 7181 private boolean mTrackballDown = false; 7182 private long mTrackballUpTime = 0; 7183 private long mLastCursorTime = 0; 7184 private Rect mLastCursorBounds; 7185 7186 // Set by default; BrowserActivity clears to interpret trackball data 7187 // directly for movement. Currently, the framework only passes 7188 // arrow key events, not trackball events, from one child to the next 7189 private boolean mMapTrackballToArrowKeys = true; 7190 7191 private DrawData mDelaySetPicture; 7192 private DrawData mLoadedPicture; 7193 7194 public void setMapTrackballToArrowKeys(boolean setMap) { 7195 checkThread(); 7196 mMapTrackballToArrowKeys = setMap; 7197 } 7198 7199 void resetTrackballTime() { 7200 mTrackballLastTime = 0; 7201 } 7202 7203 @Override 7204 public boolean onTrackballEvent(MotionEvent ev) { 7205 long time = ev.getEventTime(); 7206 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 7207 if (ev.getY() > 0) pageDown(true); 7208 if (ev.getY() < 0) pageUp(true); 7209 return true; 7210 } 7211 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 7212 if (mSelectingText) { 7213 return true; // discard press if copy in progress 7214 } 7215 mTrackballDown = true; 7216 if (mNativeClass == 0) { 7217 return false; 7218 } 7219 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 7220 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 7221 nativeSelectBestAt(mLastCursorBounds); 7222 } 7223 if (DebugFlags.WEB_VIEW) { 7224 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 7225 + " time=" + time 7226 + " mLastCursorTime=" + mLastCursorTime); 7227 } 7228 if (isInTouchMode()) requestFocusFromTouch(); 7229 return false; // let common code in onKeyDown at it 7230 } 7231 if (ev.getAction() == MotionEvent.ACTION_UP) { 7232 // LONG_PRESS_CENTER is set in common onKeyDown 7233 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 7234 mTrackballDown = false; 7235 mTrackballUpTime = time; 7236 if (mSelectingText) { 7237 copySelection(); 7238 selectionDone(); 7239 return true; // discard press if copy in progress 7240 } 7241 if (DebugFlags.WEB_VIEW) { 7242 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 7243 + " time=" + time 7244 ); 7245 } 7246 return false; // let common code in onKeyUp at it 7247 } 7248 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 7249 AccessibilityManager.getInstance(mContext).isEnabled()) { 7250 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 7251 return false; 7252 } 7253 if (mTrackballDown) { 7254 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 7255 return true; // discard move if trackball is down 7256 } 7257 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 7258 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 7259 return true; 7260 } 7261 // TODO: alternatively we can do panning as touch does 7262 switchOutDrawHistory(); 7263 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 7264 if (DebugFlags.WEB_VIEW) { 7265 Log.v(LOGTAG, "onTrackballEvent time=" 7266 + time + " last=" + mTrackballLastTime); 7267 } 7268 mTrackballFirstTime = time; 7269 mTrackballXMove = mTrackballYMove = 0; 7270 } 7271 mTrackballLastTime = time; 7272 if (DebugFlags.WEB_VIEW) { 7273 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 7274 } 7275 mTrackballRemainsX += ev.getX(); 7276 mTrackballRemainsY += ev.getY(); 7277 doTrackball(time, ev.getMetaState()); 7278 return true; 7279 } 7280 7281 private int scaleTrackballX(float xRate, int width) { 7282 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 7283 int nextXMove = xMove; 7284 if (xMove > 0) { 7285 if (xMove > mTrackballXMove) { 7286 xMove -= mTrackballXMove; 7287 } 7288 } else if (xMove < mTrackballXMove) { 7289 xMove -= mTrackballXMove; 7290 } 7291 mTrackballXMove = nextXMove; 7292 return xMove; 7293 } 7294 7295 private int scaleTrackballY(float yRate, int height) { 7296 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 7297 int nextYMove = yMove; 7298 if (yMove > 0) { 7299 if (yMove > mTrackballYMove) { 7300 yMove -= mTrackballYMove; 7301 } 7302 } else if (yMove < mTrackballYMove) { 7303 yMove -= mTrackballYMove; 7304 } 7305 mTrackballYMove = nextYMove; 7306 return yMove; 7307 } 7308 7309 private int keyCodeToSoundsEffect(int keyCode) { 7310 switch(keyCode) { 7311 case KeyEvent.KEYCODE_DPAD_UP: 7312 return SoundEffectConstants.NAVIGATION_UP; 7313 case KeyEvent.KEYCODE_DPAD_RIGHT: 7314 return SoundEffectConstants.NAVIGATION_RIGHT; 7315 case KeyEvent.KEYCODE_DPAD_DOWN: 7316 return SoundEffectConstants.NAVIGATION_DOWN; 7317 case KeyEvent.KEYCODE_DPAD_LEFT: 7318 return SoundEffectConstants.NAVIGATION_LEFT; 7319 } 7320 throw new IllegalArgumentException("keyCode must be one of " + 7321 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 7322 "KEYCODE_DPAD_LEFT}."); 7323 } 7324 7325 private void doTrackball(long time, int metaState) { 7326 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 7327 if (elapsed == 0) { 7328 elapsed = TRACKBALL_TIMEOUT; 7329 } 7330 float xRate = mTrackballRemainsX * 1000 / elapsed; 7331 float yRate = mTrackballRemainsY * 1000 / elapsed; 7332 int viewWidth = getViewWidth(); 7333 int viewHeight = getViewHeight(); 7334 float ax = Math.abs(xRate); 7335 float ay = Math.abs(yRate); 7336 float maxA = Math.max(ax, ay); 7337 if (DebugFlags.WEB_VIEW) { 7338 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 7339 + " xRate=" + xRate 7340 + " yRate=" + yRate 7341 + " mTrackballRemainsX=" + mTrackballRemainsX 7342 + " mTrackballRemainsY=" + mTrackballRemainsY); 7343 } 7344 int width = mContentWidth - viewWidth; 7345 int height = mContentHeight - viewHeight; 7346 if (width < 0) width = 0; 7347 if (height < 0) height = 0; 7348 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 7349 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 7350 maxA = Math.max(ax, ay); 7351 int count = Math.max(0, (int) maxA); 7352 int oldScrollX = mScrollX; 7353 int oldScrollY = mScrollY; 7354 if (count > 0) { 7355 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 7356 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 7357 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 7358 KeyEvent.KEYCODE_DPAD_RIGHT; 7359 count = Math.min(count, TRACKBALL_MOVE_COUNT); 7360 if (DebugFlags.WEB_VIEW) { 7361 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 7362 + " count=" + count 7363 + " mTrackballRemainsX=" + mTrackballRemainsX 7364 + " mTrackballRemainsY=" + mTrackballRemainsY); 7365 } 7366 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 7367 for (int i = 0; i < count; i++) { 7368 letPageHandleNavKey(selectKeyCode, time, true, metaState); 7369 } 7370 letPageHandleNavKey(selectKeyCode, time, false, metaState); 7371 } else if (navHandledKey(selectKeyCode, count, false, time)) { 7372 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 7373 } 7374 mTrackballRemainsX = mTrackballRemainsY = 0; 7375 } 7376 if (count >= TRACKBALL_SCROLL_COUNT) { 7377 int xMove = scaleTrackballX(xRate, width); 7378 int yMove = scaleTrackballY(yRate, height); 7379 if (DebugFlags.WEB_VIEW) { 7380 Log.v(LOGTAG, "doTrackball pinScrollBy" 7381 + " count=" + count 7382 + " xMove=" + xMove + " yMove=" + yMove 7383 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 7384 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 7385 ); 7386 } 7387 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 7388 xMove = 0; 7389 } 7390 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 7391 yMove = 0; 7392 } 7393 if (xMove != 0 || yMove != 0) { 7394 pinScrollBy(xMove, yMove, true, 0); 7395 } 7396 } 7397 } 7398 7399 /** 7400 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 7401 * @return Maximum horizontal scroll position within real content 7402 */ 7403 int computeMaxScrollX() { 7404 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 7405 } 7406 7407 /** 7408 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 7409 * @return Maximum vertical scroll position within real content 7410 */ 7411 int computeMaxScrollY() { 7412 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 7413 - getViewHeightWithTitle(), 0); 7414 } 7415 7416 boolean updateScrollCoordinates(int x, int y) { 7417 int oldX = mScrollX; 7418 int oldY = mScrollY; 7419 mScrollX = x; 7420 mScrollY = y; 7421 if (oldX != mScrollX || oldY != mScrollY) { 7422 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 7423 return true; 7424 } else { 7425 return false; 7426 } 7427 } 7428 7429 public void flingScroll(int vx, int vy) { 7430 checkThread(); 7431 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 7432 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 7433 invalidate(); 7434 } 7435 7436 private void doFling() { 7437 if (mVelocityTracker == null) { 7438 return; 7439 } 7440 int maxX = computeMaxScrollX(); 7441 int maxY = computeMaxScrollY(); 7442 7443 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 7444 int vx = (int) mVelocityTracker.getXVelocity(); 7445 int vy = (int) mVelocityTracker.getYVelocity(); 7446 7447 int scrollX = mScrollX; 7448 int scrollY = mScrollY; 7449 int overscrollDistance = mOverscrollDistance; 7450 int overflingDistance = mOverflingDistance; 7451 7452 // Use the layer's scroll data if applicable. 7453 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 7454 scrollX = mScrollingLayerRect.left; 7455 scrollY = mScrollingLayerRect.top; 7456 maxX = mScrollingLayerRect.right; 7457 maxY = mScrollingLayerRect.bottom; 7458 // No overscrolling for layers. 7459 overscrollDistance = overflingDistance = 0; 7460 } 7461 7462 if (mSnapScrollMode != SNAP_NONE) { 7463 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 7464 vy = 0; 7465 } else { 7466 vx = 0; 7467 } 7468 } 7469 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 7470 WebViewCore.resumePriority(); 7471 if (!mSelectingText) { 7472 WebViewCore.resumeUpdatePicture(mWebViewCore); 7473 } 7474 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 7475 invalidate(); 7476 } 7477 return; 7478 } 7479 float currentVelocity = mScroller.getCurrVelocity(); 7480 float velocity = (float) Math.hypot(vx, vy); 7481 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 7482 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 7483 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 7484 - Math.atan2(vy, vx))); 7485 final float circle = (float) (Math.PI) * 2.0f; 7486 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 7487 vx += currentVelocity * mLastVelX / mLastVelocity; 7488 vy += currentVelocity * mLastVelY / mLastVelocity; 7489 velocity = (float) Math.hypot(vx, vy); 7490 if (DebugFlags.WEB_VIEW) { 7491 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 7492 } 7493 } else if (DebugFlags.WEB_VIEW) { 7494 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 7495 } 7496 } else if (DebugFlags.WEB_VIEW) { 7497 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 7498 + " current=" + currentVelocity 7499 + " vx=" + vx + " vy=" + vy 7500 + " maxX=" + maxX + " maxY=" + maxY 7501 + " scrollX=" + scrollX + " scrollY=" + scrollY 7502 + " layer=" + mCurrentScrollingLayerId); 7503 } 7504 7505 // Allow sloppy flings without overscrolling at the edges. 7506 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 7507 vx = 0; 7508 } 7509 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 7510 vy = 0; 7511 } 7512 7513 if (overscrollDistance < overflingDistance) { 7514 if ((vx > 0 && scrollX == -overscrollDistance) || 7515 (vx < 0 && scrollX == maxX + overscrollDistance)) { 7516 vx = 0; 7517 } 7518 if ((vy > 0 && scrollY == -overscrollDistance) || 7519 (vy < 0 && scrollY == maxY + overscrollDistance)) { 7520 vy = 0; 7521 } 7522 } 7523 7524 mLastVelX = vx; 7525 mLastVelY = vy; 7526 mLastVelocity = velocity; 7527 7528 // no horizontal overscroll if the content just fits 7529 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 7530 maxX == 0 ? 0 : overflingDistance, overflingDistance); 7531 // Duration is calculated based on velocity. With range boundaries and overscroll 7532 // we may not know how long the final animation will take. (Hence the deprecation 7533 // warning on the call below.) It's not a big deal for scroll bars but if webcore 7534 // resumes during this effect we will take a performance hit. See computeScroll; 7535 // we resume webcore there when the animation is finished. 7536 final int time = mScroller.getDuration(); 7537 7538 // Suppress scrollbars for layer scrolling. 7539 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 7540 awakenScrollBars(time); 7541 } 7542 7543 invalidate(); 7544 } 7545 7546 /** 7547 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 7548 * in charge of installing this view to the view hierarchy. This view will 7549 * become visible when the user starts scrolling via touch and fade away if 7550 * the user does not interact with it. 7551 * <p/> 7552 * API version 3 introduces a built-in zoom mechanism that is shown 7553 * automatically by the MapView. This is the preferred approach for 7554 * showing the zoom UI. 7555 * 7556 * @deprecated The built-in zoom mechanism is preferred, see 7557 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 7558 */ 7559 @Deprecated 7560 public View getZoomControls() { 7561 checkThread(); 7562 if (!getSettings().supportZoom()) { 7563 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7564 return null; 7565 } 7566 return mZoomManager.getExternalZoomPicker(); 7567 } 7568 7569 void dismissZoomControl() { 7570 mZoomManager.dismissZoomPicker(); 7571 } 7572 7573 float getDefaultZoomScale() { 7574 return mZoomManager.getDefaultScale(); 7575 } 7576 7577 /** 7578 * Return the overview scale of the WebView 7579 * @return The overview scale. 7580 */ 7581 float getZoomOverviewScale() { 7582 return mZoomManager.getZoomOverviewScale(); 7583 } 7584 7585 /** 7586 * @return TRUE if the WebView can be zoomed in. 7587 */ 7588 public boolean canZoomIn() { 7589 checkThread(); 7590 return mZoomManager.canZoomIn(); 7591 } 7592 7593 /** 7594 * @return TRUE if the WebView can be zoomed out. 7595 */ 7596 public boolean canZoomOut() { 7597 checkThread(); 7598 return mZoomManager.canZoomOut(); 7599 } 7600 7601 /** 7602 * Perform zoom in in the webview 7603 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7604 */ 7605 public boolean zoomIn() { 7606 checkThread(); 7607 return mZoomManager.zoomIn(); 7608 } 7609 7610 /** 7611 * Perform zoom out in the webview 7612 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7613 */ 7614 public boolean zoomOut() { 7615 checkThread(); 7616 return mZoomManager.zoomOut(); 7617 } 7618 7619 /** 7620 * This selects the best clickable target at mLastTouchX and mLastTouchY 7621 * and calls showCursorTimed on the native side 7622 */ 7623 private void updateSelection() { 7624 if (mNativeClass == 0 || sDisableNavcache) { 7625 return; 7626 } 7627 mPrivateHandler.removeMessages(UPDATE_SELECTION); 7628 // mLastTouchX and mLastTouchY are the point in the current viewport 7629 int contentX = viewToContentX(mLastTouchX + mScrollX); 7630 int contentY = viewToContentY(mLastTouchY + mScrollY); 7631 int slop = viewToContentDimension(mNavSlop); 7632 Rect rect = new Rect(contentX - slop, contentY - slop, 7633 contentX + slop, contentY + slop); 7634 nativeSelectBestAt(rect); 7635 mInitialHitTestResult = hitTestResult(null); 7636 } 7637 7638 /** 7639 * Scroll the focused text field to match the WebTextView 7640 * @param xPercent New x position of the WebTextView from 0 to 1. 7641 */ 7642 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7643 if (!inEditingMode() || mWebViewCore == null) { 7644 return; 7645 } 7646 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7647 new Float(xPercent)); 7648 } 7649 7650 /** 7651 * Scroll the focused textarea vertically to match the WebTextView 7652 * @param y New y position of the WebTextView in view coordinates 7653 */ 7654 /* package */ void scrollFocusedTextInputY(int y) { 7655 if (!inEditingMode() || mWebViewCore == null) { 7656 return; 7657 } 7658 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7659 } 7660 7661 /** 7662 * Set our starting point and time for a drag from the WebTextView. 7663 */ 7664 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7665 if (!inEditingMode()) { 7666 return; 7667 } 7668 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7669 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7670 mLastTouchTime = eventTime; 7671 if (!mScroller.isFinished()) { 7672 abortAnimation(); 7673 } 7674 mSnapScrollMode = SNAP_NONE; 7675 mVelocityTracker = VelocityTracker.obtain(); 7676 mTouchMode = TOUCH_DRAG_START_MODE; 7677 } 7678 7679 /** 7680 * Given a motion event from the WebTextView, set its location to our 7681 * coordinates, and handle the event. 7682 */ 7683 /*package*/ boolean textFieldDrag(MotionEvent event) { 7684 if (!inEditingMode()) { 7685 return false; 7686 } 7687 mDragFromTextInput = true; 7688 event.offsetLocation((mWebTextView.getLeft() - mScrollX), 7689 (mWebTextView.getTop() - mScrollY)); 7690 boolean result = onTouchEvent(event); 7691 mDragFromTextInput = false; 7692 return result; 7693 } 7694 7695 /** 7696 * Due a touch up from a WebTextView. This will be handled by webkit to 7697 * change the selection. 7698 * @param event MotionEvent in the WebTextView's coordinates. 7699 */ 7700 /*package*/ void touchUpOnTextField(MotionEvent event) { 7701 if (!inEditingMode()) { 7702 return; 7703 } 7704 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7705 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7706 int slop = viewToContentDimension(mNavSlop); 7707 nativeMotionUp(x, y, slop); 7708 } 7709 7710 /** 7711 * Called when pressing the center key or trackball on a textfield. 7712 */ 7713 /*package*/ void centerKeyPressOnTextField() { 7714 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7715 nativeCursorNodePointer()); 7716 } 7717 7718 private void doShortPress() { 7719 if (mNativeClass == 0) { 7720 return; 7721 } 7722 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7723 return; 7724 } 7725 mTouchMode = TOUCH_DONE_MODE; 7726 updateSelection(); 7727 switchOutDrawHistory(); 7728 // mLastTouchX and mLastTouchY are the point in the current viewport 7729 int contentX = viewToContentX(mLastTouchX + mScrollX); 7730 int contentY = viewToContentY(mLastTouchY + mScrollY); 7731 int slop = viewToContentDimension(mNavSlop); 7732 if (sDisableNavcache && !mTouchHighlightRegion.isEmpty()) { 7733 // set mTouchHighlightRequested to 0 to cause an immediate 7734 // drawing of the touch rings 7735 mTouchHighlightRequested = 0; 7736 invalidate(mTouchHighlightRegion.getBounds()); 7737 mPrivateHandler.postDelayed(new Runnable() { 7738 @Override 7739 public void run() { 7740 removeTouchHighlight(); 7741 } 7742 }, ViewConfiguration.getPressedStateDuration()); 7743 } 7744 if (sDisableNavcache) { 7745 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7746 // use "0" as generation id to inform WebKit to use the same x/y as 7747 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7748 touchUpData.mMoveGeneration = 0; 7749 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7750 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7751 WebViewCore.MotionUpData motionUpData = new WebViewCore 7752 .MotionUpData(); 7753 motionUpData.mFrame = nativeCacheHitFramePointer(); 7754 motionUpData.mNode = nativeCacheHitNodePointer(); 7755 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7756 motionUpData.mX = contentX; 7757 motionUpData.mY = contentY; 7758 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7759 motionUpData); 7760 } else { 7761 doMotionUp(contentX, contentY); 7762 } 7763 } 7764 7765 private void doMotionUp(int contentX, int contentY) { 7766 int slop = viewToContentDimension(mNavSlop); 7767 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7768 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7769 } 7770 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7771 playSoundEffect(SoundEffectConstants.CLICK); 7772 } 7773 } 7774 7775 void sendPluginDrawMsg() { 7776 mWebViewCore.sendMessage(EventHub.PLUGIN_SURFACE_READY); 7777 } 7778 7779 /** 7780 * Returns plugin bounds if x/y in content coordinates corresponds to a 7781 * plugin. Otherwise a NULL rectangle is returned. 7782 */ 7783 Rect getPluginBounds(int x, int y) { 7784 int slop = viewToContentDimension(mNavSlop); 7785 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7786 return nativeCacheHitNodeBounds(); 7787 } else { 7788 return null; 7789 } 7790 } 7791 7792 /* 7793 * Return true if the rect (e.g. plugin) is fully visible and maximized 7794 * inside the WebView. 7795 */ 7796 boolean isRectFitOnScreen(Rect rect) { 7797 final int rectWidth = rect.width(); 7798 final int rectHeight = rect.height(); 7799 final int viewWidth = getViewWidth(); 7800 final int viewHeight = getViewHeightWithTitle(); 7801 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7802 scale = mZoomManager.computeScaleWithLimits(scale); 7803 return !mZoomManager.willScaleTriggerZoom(scale) 7804 && contentToViewX(rect.left) >= mScrollX 7805 && contentToViewX(rect.right) <= mScrollX + viewWidth 7806 && contentToViewY(rect.top) >= mScrollY 7807 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7808 } 7809 7810 /* 7811 * Maximize and center the rectangle, specified in the document coordinate 7812 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7813 * animated scroll to center it. If the zoom needs to be changed, find the 7814 * zoom center and do a smooth zoom transition. The rect is in document 7815 * coordinates 7816 */ 7817 void centerFitRect(Rect rect) { 7818 final int rectWidth = rect.width(); 7819 final int rectHeight = rect.height(); 7820 final int viewWidth = getViewWidth(); 7821 final int viewHeight = getViewHeightWithTitle(); 7822 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7823 / rectHeight); 7824 scale = mZoomManager.computeScaleWithLimits(scale); 7825 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7826 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7827 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7828 true, 0); 7829 } else { 7830 float actualScale = mZoomManager.getScale(); 7831 float oldScreenX = rect.left * actualScale - mScrollX; 7832 float rectViewX = rect.left * scale; 7833 float rectViewWidth = rectWidth * scale; 7834 float newMaxWidth = mContentWidth * scale; 7835 float newScreenX = (viewWidth - rectViewWidth) / 2; 7836 // pin the newX to the WebView 7837 if (newScreenX > rectViewX) { 7838 newScreenX = rectViewX; 7839 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7840 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7841 } 7842 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7843 / (scale - actualScale); 7844 float oldScreenY = rect.top * actualScale + getTitleHeight() 7845 - mScrollY; 7846 float rectViewY = rect.top * scale + getTitleHeight(); 7847 float rectViewHeight = rectHeight * scale; 7848 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7849 float newScreenY = (viewHeight - rectViewHeight) / 2; 7850 // pin the newY to the WebView 7851 if (newScreenY > rectViewY) { 7852 newScreenY = rectViewY; 7853 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7854 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7855 } 7856 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7857 / (scale - actualScale); 7858 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7859 mZoomManager.startZoomAnimation(scale, false); 7860 } 7861 } 7862 7863 // Called by JNI to handle a touch on a node representing an email address, 7864 // address, or phone number 7865 private void overrideLoading(String url) { 7866 mCallbackProxy.uiOverrideUrlLoading(url); 7867 } 7868 7869 @Override 7870 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7871 // FIXME: If a subwindow is showing find, and the user touches the 7872 // background window, it can steal focus. 7873 if (mFindIsUp) return false; 7874 boolean result = false; 7875 if (inEditingMode()) { 7876 result = mWebTextView.requestFocus(direction, 7877 previouslyFocusedRect); 7878 } else { 7879 result = super.requestFocus(direction, previouslyFocusedRect); 7880 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 7881 // For cases such as GMail, where we gain focus from a direction, 7882 // we want to move to the first available link. 7883 // FIXME: If there are no visible links, we may not want to 7884 int fakeKeyDirection = 0; 7885 switch(direction) { 7886 case View.FOCUS_UP: 7887 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7888 break; 7889 case View.FOCUS_DOWN: 7890 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7891 break; 7892 case View.FOCUS_LEFT: 7893 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7894 break; 7895 case View.FOCUS_RIGHT: 7896 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7897 break; 7898 default: 7899 return result; 7900 } 7901 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7902 navHandledKey(fakeKeyDirection, 1, true, 0); 7903 } 7904 } 7905 } 7906 return result; 7907 } 7908 7909 @Override 7910 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7911 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7912 7913 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7914 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7915 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7916 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7917 7918 int measuredHeight = heightSize; 7919 int measuredWidth = widthSize; 7920 7921 // Grab the content size from WebViewCore. 7922 int contentHeight = contentToViewDimension(mContentHeight); 7923 int contentWidth = contentToViewDimension(mContentWidth); 7924 7925// Log.d(LOGTAG, "------- measure " + heightMode); 7926 7927 if (heightMode != MeasureSpec.EXACTLY) { 7928 mHeightCanMeasure = true; 7929 measuredHeight = contentHeight; 7930 if (heightMode == MeasureSpec.AT_MOST) { 7931 // If we are larger than the AT_MOST height, then our height can 7932 // no longer be measured and we should scroll internally. 7933 if (measuredHeight > heightSize) { 7934 measuredHeight = heightSize; 7935 mHeightCanMeasure = false; 7936 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7937 } 7938 } 7939 } else { 7940 mHeightCanMeasure = false; 7941 } 7942 if (mNativeClass != 0) { 7943 nativeSetHeightCanMeasure(mHeightCanMeasure); 7944 } 7945 // For the width, always use the given size unless unspecified. 7946 if (widthMode == MeasureSpec.UNSPECIFIED) { 7947 mWidthCanMeasure = true; 7948 measuredWidth = contentWidth; 7949 } else { 7950 if (measuredWidth < contentWidth) { 7951 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7952 } 7953 mWidthCanMeasure = false; 7954 } 7955 7956 synchronized (this) { 7957 setMeasuredDimension(measuredWidth, measuredHeight); 7958 } 7959 } 7960 7961 @Override 7962 public boolean requestChildRectangleOnScreen(View child, 7963 Rect rect, 7964 boolean immediate) { 7965 if (mNativeClass == 0) { 7966 return false; 7967 } 7968 // don't scroll while in zoom animation. When it is done, we will adjust 7969 // the necessary components (e.g., WebTextView if it is in editing mode) 7970 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7971 return false; 7972 } 7973 7974 rect.offset(child.getLeft() - child.getScrollX(), 7975 child.getTop() - child.getScrollY()); 7976 7977 Rect content = new Rect(viewToContentX(mScrollX), 7978 viewToContentY(mScrollY), 7979 viewToContentX(mScrollX + getWidth() 7980 - getVerticalScrollbarWidth()), 7981 viewToContentY(mScrollY + getViewHeightWithTitle())); 7982 content = nativeSubtractLayers(content); 7983 int screenTop = contentToViewY(content.top); 7984 int screenBottom = contentToViewY(content.bottom); 7985 int height = screenBottom - screenTop; 7986 int scrollYDelta = 0; 7987 7988 if (rect.bottom > screenBottom) { 7989 int oneThirdOfScreenHeight = height / 3; 7990 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7991 // If the rectangle is too tall to fit in the bottom two thirds 7992 // of the screen, place it at the top. 7993 scrollYDelta = rect.top - screenTop; 7994 } else { 7995 // If the rectangle will still fit on screen, we want its 7996 // top to be in the top third of the screen. 7997 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7998 } 7999 } else if (rect.top < screenTop) { 8000 scrollYDelta = rect.top - screenTop; 8001 } 8002 8003 int screenLeft = contentToViewX(content.left); 8004 int screenRight = contentToViewX(content.right); 8005 int width = screenRight - screenLeft; 8006 int scrollXDelta = 0; 8007 8008 if (rect.right > screenRight && rect.left > screenLeft) { 8009 if (rect.width() > width) { 8010 scrollXDelta += (rect.left - screenLeft); 8011 } else { 8012 scrollXDelta += (rect.right - screenRight); 8013 } 8014 } else if (rect.left < screenLeft) { 8015 scrollXDelta -= (screenLeft - rect.left); 8016 } 8017 8018 if ((scrollYDelta | scrollXDelta) != 0) { 8019 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 8020 } 8021 8022 return false; 8023 } 8024 8025 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 8026 String replace, int newStart, int newEnd) { 8027 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 8028 arg.mReplace = replace; 8029 arg.mNewStart = newStart; 8030 arg.mNewEnd = newEnd; 8031 mTextGeneration++; 8032 arg.mTextGeneration = mTextGeneration; 8033 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 8034 } 8035 8036 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 8037 // check if mWebViewCore has been destroyed 8038 if (mWebViewCore == null) { 8039 return; 8040 } 8041 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 8042 arg.mEvent = event; 8043 arg.mCurrentText = currentText; 8044 // Increase our text generation number, and pass it to webcore thread 8045 mTextGeneration++; 8046 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 8047 // WebKit's document state is not saved until about to leave the page. 8048 // To make sure the host application, like Browser, has the up to date 8049 // document state when it goes to background, we force to save the 8050 // document state. 8051 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 8052 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 8053 cursorData(), 1000); 8054 } 8055 8056 /** 8057 * @hide 8058 */ 8059 public synchronized WebViewCore getWebViewCore() { 8060 return mWebViewCore; 8061 } 8062 8063 /** 8064 * Used only by TouchEventQueue to store pending touch events. 8065 */ 8066 private static class QueuedTouch { 8067 long mSequence; 8068 MotionEvent mEvent; // Optional 8069 TouchEventData mTed; // Optional 8070 8071 QueuedTouch mNext; 8072 8073 public QueuedTouch set(TouchEventData ted) { 8074 mSequence = ted.mSequence; 8075 mTed = ted; 8076 mEvent = null; 8077 mNext = null; 8078 return this; 8079 } 8080 8081 public QueuedTouch set(MotionEvent ev, long sequence) { 8082 mEvent = MotionEvent.obtain(ev); 8083 mSequence = sequence; 8084 mTed = null; 8085 mNext = null; 8086 return this; 8087 } 8088 8089 public QueuedTouch add(QueuedTouch other) { 8090 if (other.mSequence < mSequence) { 8091 other.mNext = this; 8092 return other; 8093 } 8094 8095 QueuedTouch insertAt = this; 8096 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 8097 insertAt = insertAt.mNext; 8098 } 8099 other.mNext = insertAt.mNext; 8100 insertAt.mNext = other; 8101 return this; 8102 } 8103 } 8104 8105 /** 8106 * WebView handles touch events asynchronously since some events must be passed to WebKit 8107 * for potentially slower processing. TouchEventQueue serializes touch events regardless 8108 * of which path they take to ensure that no events are ever processed out of order 8109 * by WebView. 8110 */ 8111 private class TouchEventQueue { 8112 private long mNextTouchSequence = Long.MIN_VALUE + 1; 8113 private long mLastHandledTouchSequence = Long.MIN_VALUE; 8114 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 8115 8116 // Events waiting to be processed. 8117 private QueuedTouch mTouchEventQueue; 8118 8119 // Known events that are waiting on a response before being enqueued. 8120 private QueuedTouch mPreQueue; 8121 8122 // Pool of QueuedTouch objects saved for later use. 8123 private QueuedTouch mQueuedTouchRecycleBin; 8124 private int mQueuedTouchRecycleCount; 8125 8126 private long mLastEventTime = Long.MAX_VALUE; 8127 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 8128 8129 // milliseconds until we abandon hope of getting all of a previous gesture 8130 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 8131 8132 private QueuedTouch obtainQueuedTouch() { 8133 if (mQueuedTouchRecycleBin != null) { 8134 QueuedTouch result = mQueuedTouchRecycleBin; 8135 mQueuedTouchRecycleBin = result.mNext; 8136 mQueuedTouchRecycleCount--; 8137 return result; 8138 } 8139 return new QueuedTouch(); 8140 } 8141 8142 /** 8143 * Allow events with any currently missing sequence numbers to be skipped in processing. 8144 */ 8145 public void ignoreCurrentlyMissingEvents() { 8146 mIgnoreUntilSequence = mNextTouchSequence; 8147 8148 // Run any events we have available and complete, pre-queued or otherwise. 8149 runQueuedAndPreQueuedEvents(); 8150 } 8151 8152 private void runQueuedAndPreQueuedEvents() { 8153 QueuedTouch qd = mPreQueue; 8154 boolean fromPreQueue = true; 8155 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8156 handleQueuedTouch(qd); 8157 QueuedTouch recycleMe = qd; 8158 if (fromPreQueue) { 8159 mPreQueue = qd.mNext; 8160 } else { 8161 mTouchEventQueue = qd.mNext; 8162 } 8163 recycleQueuedTouch(recycleMe); 8164 mLastHandledTouchSequence++; 8165 8166 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 8167 long nextQueued = mTouchEventQueue != null ? 8168 mTouchEventQueue.mSequence : Long.MAX_VALUE; 8169 fromPreQueue = nextPre < nextQueued; 8170 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 8171 } 8172 } 8173 8174 /** 8175 * Add a TouchEventData to the pre-queue. 8176 * 8177 * An event in the pre-queue is an event that we know about that 8178 * has been sent to webkit, but that we haven't received back and 8179 * enqueued into the normal touch queue yet. If webkit ever times 8180 * out and we need to ignore currently missing events, we'll run 8181 * events from the pre-queue to patch the holes. 8182 * 8183 * @param ted TouchEventData to pre-queue 8184 */ 8185 public void preQueueTouchEventData(TouchEventData ted) { 8186 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 8187 if (mPreQueue == null) { 8188 mPreQueue = newTouch; 8189 } else { 8190 QueuedTouch insertionPoint = mPreQueue; 8191 while (insertionPoint.mNext != null && 8192 insertionPoint.mNext.mSequence < newTouch.mSequence) { 8193 insertionPoint = insertionPoint.mNext; 8194 } 8195 newTouch.mNext = insertionPoint.mNext; 8196 insertionPoint.mNext = newTouch; 8197 } 8198 } 8199 8200 private void recycleQueuedTouch(QueuedTouch qd) { 8201 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 8202 qd.mNext = mQueuedTouchRecycleBin; 8203 mQueuedTouchRecycleBin = qd; 8204 mQueuedTouchRecycleCount++; 8205 } 8206 } 8207 8208 /** 8209 * Reset the touch event queue. This will dump any pending events 8210 * and reset the sequence numbering. 8211 */ 8212 public void reset() { 8213 mNextTouchSequence = Long.MIN_VALUE + 1; 8214 mLastHandledTouchSequence = Long.MIN_VALUE; 8215 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 8216 while (mTouchEventQueue != null) { 8217 QueuedTouch recycleMe = mTouchEventQueue; 8218 mTouchEventQueue = mTouchEventQueue.mNext; 8219 recycleQueuedTouch(recycleMe); 8220 } 8221 while (mPreQueue != null) { 8222 QueuedTouch recycleMe = mPreQueue; 8223 mPreQueue = mPreQueue.mNext; 8224 recycleQueuedTouch(recycleMe); 8225 } 8226 } 8227 8228 /** 8229 * Return the next valid sequence number for tagging incoming touch events. 8230 * @return The next touch event sequence number 8231 */ 8232 public long nextTouchSequence() { 8233 return mNextTouchSequence++; 8234 } 8235 8236 /** 8237 * Enqueue a touch event in the form of TouchEventData. 8238 * The sequence number will be read from the mSequence field of the argument. 8239 * 8240 * If the touch event's sequence number is the next in line to be processed, it will 8241 * be handled before this method returns. Any subsequent events that have already 8242 * been queued will also be processed in their proper order. 8243 * 8244 * @param ted Touch data to be processed in order. 8245 * @return true if the event was processed before returning, false if it was just enqueued. 8246 */ 8247 public boolean enqueueTouchEvent(TouchEventData ted) { 8248 // Remove from the pre-queue if present 8249 QueuedTouch preQueue = mPreQueue; 8250 if (preQueue != null) { 8251 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 8252 // if it was present in the pre-queue, and removed from the pre-queue itself. 8253 if (preQueue.mSequence == ted.mSequence) { 8254 mPreQueue = preQueue.mNext; 8255 } else { 8256 QueuedTouch prev = preQueue; 8257 preQueue = null; 8258 while (prev.mNext != null) { 8259 if (prev.mNext.mSequence == ted.mSequence) { 8260 preQueue = prev.mNext; 8261 prev.mNext = preQueue.mNext; 8262 break; 8263 } else { 8264 prev = prev.mNext; 8265 } 8266 } 8267 } 8268 } 8269 8270 if (ted.mSequence < mLastHandledTouchSequence) { 8271 // Stale event and we already moved on; drop it. (Should not be common.) 8272 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 8273 " received from webcore; ignoring"); 8274 return false; 8275 } 8276 8277 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 8278 return false; 8279 } 8280 8281 // dropStaleGestures above might have fast-forwarded us to 8282 // an event we have already. 8283 runNextQueuedEvents(); 8284 8285 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 8286 if (preQueue != null) { 8287 recycleQueuedTouch(preQueue); 8288 preQueue = null; 8289 } 8290 handleQueuedTouchEventData(ted); 8291 8292 mLastHandledTouchSequence++; 8293 8294 // Do we have any more? Run them if so. 8295 runNextQueuedEvents(); 8296 } else { 8297 // Reuse the pre-queued object if we had it. 8298 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 8299 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8300 } 8301 return true; 8302 } 8303 8304 /** 8305 * Enqueue a touch event in the form of a MotionEvent from the framework. 8306 * 8307 * If the touch event's sequence number is the next in line to be processed, it will 8308 * be handled before this method returns. Any subsequent events that have already 8309 * been queued will also be processed in their proper order. 8310 * 8311 * @param ev MotionEvent to be processed in order 8312 */ 8313 public void enqueueTouchEvent(MotionEvent ev) { 8314 final long sequence = nextTouchSequence(); 8315 8316 if (dropStaleGestures(ev, sequence)) { 8317 return; 8318 } 8319 8320 // dropStaleGestures above might have fast-forwarded us to 8321 // an event we have already. 8322 runNextQueuedEvents(); 8323 8324 if (mLastHandledTouchSequence + 1 == sequence) { 8325 handleQueuedMotionEvent(ev); 8326 8327 mLastHandledTouchSequence++; 8328 8329 // Do we have any more? Run them if so. 8330 runNextQueuedEvents(); 8331 } else { 8332 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 8333 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8334 } 8335 } 8336 8337 private void runNextQueuedEvents() { 8338 QueuedTouch qd = mTouchEventQueue; 8339 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8340 handleQueuedTouch(qd); 8341 QueuedTouch recycleMe = qd; 8342 qd = qd.mNext; 8343 recycleQueuedTouch(recycleMe); 8344 mLastHandledTouchSequence++; 8345 } 8346 mTouchEventQueue = qd; 8347 } 8348 8349 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 8350 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 8351 // This is to make sure that we don't attempt to process a tap 8352 // or long press when webkit takes too long to get back to us. 8353 // The movement will be properly confirmed when we process the 8354 // enqueued event later. 8355 final int dx = Math.round(ev.getX()) - mLastTouchX; 8356 final int dy = Math.round(ev.getY()) - mLastTouchY; 8357 if (dx * dx + dy * dy > mTouchSlopSquare) { 8358 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 8359 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 8360 } 8361 } 8362 8363 if (mTouchEventQueue == null) { 8364 return sequence <= mLastHandledTouchSequence; 8365 } 8366 8367 // If we have a new down event and it's been a while since the last event 8368 // we saw, catch up as best we can and keep going. 8369 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 8370 long eventTime = ev.getEventTime(); 8371 long lastHandledEventTime = mLastEventTime; 8372 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 8373 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 8374 "Catching up."); 8375 runQueuedAndPreQueuedEvents(); 8376 8377 // Drop leftovers that we truly don't have. 8378 QueuedTouch qd = mTouchEventQueue; 8379 while (qd != null && qd.mSequence < sequence) { 8380 QueuedTouch recycleMe = qd; 8381 qd = qd.mNext; 8382 recycleQueuedTouch(recycleMe); 8383 } 8384 mTouchEventQueue = qd; 8385 mLastHandledTouchSequence = sequence - 1; 8386 } 8387 } 8388 8389 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 8390 QueuedTouch qd = mTouchEventQueue; 8391 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8392 QueuedTouch recycleMe = qd; 8393 qd = qd.mNext; 8394 recycleQueuedTouch(recycleMe); 8395 } 8396 mTouchEventQueue = qd; 8397 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 8398 } 8399 8400 if (mPreQueue != null) { 8401 // Drop stale prequeued events 8402 QueuedTouch qd = mPreQueue; 8403 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8404 QueuedTouch recycleMe = qd; 8405 qd = qd.mNext; 8406 recycleQueuedTouch(recycleMe); 8407 } 8408 mPreQueue = qd; 8409 } 8410 8411 return sequence <= mLastHandledTouchSequence; 8412 } 8413 8414 private void handleQueuedTouch(QueuedTouch qt) { 8415 if (qt.mTed != null) { 8416 handleQueuedTouchEventData(qt.mTed); 8417 } else { 8418 handleQueuedMotionEvent(qt.mEvent); 8419 qt.mEvent.recycle(); 8420 } 8421 } 8422 8423 private void handleQueuedMotionEvent(MotionEvent ev) { 8424 mLastEventTime = ev.getEventTime(); 8425 int action = ev.getActionMasked(); 8426 if (ev.getPointerCount() > 1) { // Multi-touch 8427 handleMultiTouchInWebView(ev); 8428 } else { 8429 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 8430 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 8431 // ScaleGestureDetector needs a consistent event stream to operate properly. 8432 // It won't take any action with fewer than two pointers, but it needs to 8433 // update internal bookkeeping state. 8434 detector.onTouchEvent(ev); 8435 } 8436 8437 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 8438 } 8439 } 8440 8441 private void handleQueuedTouchEventData(TouchEventData ted) { 8442 if (ted.mMotionEvent != null) { 8443 mLastEventTime = ted.mMotionEvent.getEventTime(); 8444 } 8445 if (!ted.mReprocess) { 8446 if (ted.mAction == MotionEvent.ACTION_DOWN 8447 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 8448 // if prevent default is called from WebCore, UI 8449 // will not handle the rest of the touch events any 8450 // more. 8451 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8452 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 8453 } else if (ted.mAction == MotionEvent.ACTION_MOVE 8454 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 8455 // the return for the first ACTION_MOVE will decide 8456 // whether UI will handle touch or not. Currently no 8457 // support for alternating prevent default 8458 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8459 : PREVENT_DEFAULT_NO; 8460 } 8461 if (mPreventDefault == PREVENT_DEFAULT_YES) { 8462 mTouchHighlightRegion.setEmpty(); 8463 } 8464 } else { 8465 if (ted.mPoints.length > 1) { // multi-touch 8466 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 8467 mPreventDefault = PREVENT_DEFAULT_NO; 8468 handleMultiTouchInWebView(ted.mMotionEvent); 8469 } else { 8470 mPreventDefault = PREVENT_DEFAULT_YES; 8471 } 8472 return; 8473 } 8474 8475 // prevent default is not called in WebCore, so the 8476 // message needs to be reprocessed in UI 8477 if (!ted.mNativeResult) { 8478 // Following is for single touch. 8479 switch (ted.mAction) { 8480 case MotionEvent.ACTION_DOWN: 8481 mLastDeferTouchX = ted.mPointsInView[0].x; 8482 mLastDeferTouchY = ted.mPointsInView[0].y; 8483 mDeferTouchMode = TOUCH_INIT_MODE; 8484 break; 8485 case MotionEvent.ACTION_MOVE: { 8486 // no snapping in defer process 8487 int x = ted.mPointsInView[0].x; 8488 int y = ted.mPointsInView[0].y; 8489 8490 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 8491 mDeferTouchMode = TOUCH_DRAG_MODE; 8492 mLastDeferTouchX = x; 8493 mLastDeferTouchY = y; 8494 startScrollingLayer(x, y); 8495 startDrag(); 8496 } 8497 int deltaX = pinLocX((int) (mScrollX 8498 + mLastDeferTouchX - x)) 8499 - mScrollX; 8500 int deltaY = pinLocY((int) (mScrollY 8501 + mLastDeferTouchY - y)) 8502 - mScrollY; 8503 doDrag(deltaX, deltaY); 8504 if (deltaX != 0) mLastDeferTouchX = x; 8505 if (deltaY != 0) mLastDeferTouchY = y; 8506 break; 8507 } 8508 case MotionEvent.ACTION_UP: 8509 case MotionEvent.ACTION_CANCEL: 8510 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 8511 // no fling in defer process 8512 mScroller.springBack(mScrollX, mScrollY, 0, 8513 computeMaxScrollX(), 0, 8514 computeMaxScrollY()); 8515 invalidate(); 8516 WebViewCore.resumePriority(); 8517 WebViewCore.resumeUpdatePicture(mWebViewCore); 8518 } 8519 mDeferTouchMode = TOUCH_DONE_MODE; 8520 break; 8521 case WebViewCore.ACTION_DOUBLETAP: 8522 // doDoubleTap() needs mLastTouchX/Y as anchor 8523 mLastDeferTouchX = ted.mPointsInView[0].x; 8524 mLastDeferTouchY = ted.mPointsInView[0].y; 8525 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 8526 mDeferTouchMode = TOUCH_DONE_MODE; 8527 break; 8528 case WebViewCore.ACTION_LONGPRESS: 8529 HitTestResult hitTest = getHitTestResult(); 8530 if (hitTest != null && hitTest.mType 8531 != HitTestResult.UNKNOWN_TYPE) { 8532 performLongClick(); 8533 } 8534 mDeferTouchMode = TOUCH_DONE_MODE; 8535 break; 8536 } 8537 } 8538 } 8539 } 8540 } 8541 8542 //------------------------------------------------------------------------- 8543 // Methods can be called from a separate thread, like WebViewCore 8544 // If it needs to call the View system, it has to send message. 8545 //------------------------------------------------------------------------- 8546 8547 /** 8548 * General handler to receive message coming from webkit thread 8549 */ 8550 class PrivateHandler extends Handler { 8551 @Override 8552 public void handleMessage(Message msg) { 8553 // exclude INVAL_RECT_MSG_ID since it is frequently output 8554 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 8555 if (msg.what >= FIRST_PRIVATE_MSG_ID 8556 && msg.what <= LAST_PRIVATE_MSG_ID) { 8557 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 8558 - FIRST_PRIVATE_MSG_ID]); 8559 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 8560 && msg.what <= LAST_PACKAGE_MSG_ID) { 8561 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 8562 - FIRST_PACKAGE_MSG_ID]); 8563 } else { 8564 Log.v(LOGTAG, Integer.toString(msg.what)); 8565 } 8566 } 8567 if (mWebViewCore == null) { 8568 // after WebView's destroy() is called, skip handling messages. 8569 return; 8570 } 8571 if (mBlockWebkitViewMessages 8572 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 8573 // Blocking messages from webkit 8574 return; 8575 } 8576 switch (msg.what) { 8577 case REMEMBER_PASSWORD: { 8578 mDatabase.setUsernamePassword( 8579 msg.getData().getString("host"), 8580 msg.getData().getString("username"), 8581 msg.getData().getString("password")); 8582 ((Message) msg.obj).sendToTarget(); 8583 break; 8584 } 8585 case NEVER_REMEMBER_PASSWORD: { 8586 mDatabase.setUsernamePassword( 8587 msg.getData().getString("host"), null, null); 8588 ((Message) msg.obj).sendToTarget(); 8589 break; 8590 } 8591 case PREVENT_DEFAULT_TIMEOUT: { 8592 // if timeout happens, cancel it so that it won't block UI 8593 // to continue handling touch events 8594 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8595 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8596 || (msg.arg1 == MotionEvent.ACTION_MOVE 8597 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8598 cancelWebCoreTouchEvent( 8599 viewToContentX(mLastTouchX + mScrollX), 8600 viewToContentY(mLastTouchY + mScrollY), 8601 true); 8602 } 8603 break; 8604 } 8605 case SCROLL_SELECT_TEXT: { 8606 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8607 mSentAutoScrollMessage = false; 8608 break; 8609 } 8610 if (mCurrentScrollingLayerId == 0) { 8611 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8612 } else { 8613 scrollLayerTo(mScrollingLayerRect.left + mAutoScrollX, 8614 mScrollingLayerRect.top + mAutoScrollY); 8615 } 8616 sendEmptyMessageDelayed( 8617 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8618 break; 8619 } 8620 case UPDATE_SELECTION: { 8621 if (mTouchMode == TOUCH_INIT_MODE 8622 || mTouchMode == TOUCH_SHORTPRESS_MODE 8623 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 8624 updateSelection(); 8625 } 8626 break; 8627 } 8628 case SWITCH_TO_SHORTPRESS: { 8629 if (mTouchMode == TOUCH_INIT_MODE) { 8630 if (!sDisableNavcache 8631 && mPreventDefault != PREVENT_DEFAULT_YES) { 8632 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8633 updateSelection(); 8634 } else { 8635 // set to TOUCH_SHORTPRESS_MODE so that it won't 8636 // trigger double tap any more 8637 mTouchMode = TOUCH_SHORTPRESS_MODE; 8638 } 8639 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8640 mTouchMode = TOUCH_DONE_MODE; 8641 } 8642 break; 8643 } 8644 case SWITCH_TO_LONGPRESS: { 8645 if (sDisableNavcache) { 8646 removeTouchHighlight(); 8647 } 8648 if (inFullScreenMode() || mDeferTouchProcess) { 8649 TouchEventData ted = new TouchEventData(); 8650 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8651 ted.mIds = new int[1]; 8652 ted.mIds[0] = 0; 8653 ted.mPoints = new Point[1]; 8654 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8655 viewToContentY(mLastTouchY + mScrollY)); 8656 ted.mPointsInView = new Point[1]; 8657 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8658 // metaState for long press is tricky. Should it be the 8659 // state when the press started or when the press was 8660 // released? Or some intermediary key state? For 8661 // simplicity for now, we don't set it. 8662 ted.mMetaState = 0; 8663 ted.mReprocess = mDeferTouchProcess; 8664 ted.mNativeLayer = nativeScrollableLayer( 8665 ted.mPoints[0].x, ted.mPoints[0].y, 8666 ted.mNativeLayerRect, null); 8667 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8668 mTouchEventQueue.preQueueTouchEventData(ted); 8669 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8670 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8671 mTouchMode = TOUCH_DONE_MODE; 8672 performLongClick(); 8673 } 8674 break; 8675 } 8676 case RELEASE_SINGLE_TAP: { 8677 doShortPress(); 8678 break; 8679 } 8680 case SCROLL_TO_MSG_ID: { 8681 // arg1 = animate, arg2 = onlyIfImeIsShowing 8682 // obj = Point(x, y) 8683 if (msg.arg2 == 1) { 8684 // This scroll is intended to bring the textfield into 8685 // view, but is only necessary if the IME is showing 8686 InputMethodManager imm = InputMethodManager.peekInstance(); 8687 if (imm == null || !imm.isAcceptingText() 8688 || (!imm.isActive(WebView.this) && (!inEditingMode() 8689 || !imm.isActive(mWebTextView)))) { 8690 break; 8691 } 8692 } 8693 final Point p = (Point) msg.obj; 8694 if (msg.arg1 == 1) { 8695 spawnContentScrollTo(p.x, p.y); 8696 } else { 8697 setContentScrollTo(p.x, p.y); 8698 } 8699 break; 8700 } 8701 case UPDATE_ZOOM_RANGE: { 8702 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8703 // mScrollX contains the new minPrefWidth 8704 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8705 break; 8706 } 8707 case UPDATE_ZOOM_DENSITY: { 8708 final float density = (Float) msg.obj; 8709 mZoomManager.updateDefaultZoomDensity(density); 8710 break; 8711 } 8712 case REPLACE_BASE_CONTENT: { 8713 nativeReplaceBaseContent(msg.arg1); 8714 break; 8715 } 8716 case NEW_PICTURE_MSG_ID: { 8717 // called for new content 8718 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8719 setNewPicture(draw, true); 8720 break; 8721 } 8722 case WEBCORE_INITIALIZED_MSG_ID: 8723 // nativeCreate sets mNativeClass to a non-zero value 8724 String drawableDir = BrowserFrame.getRawResFilename( 8725 BrowserFrame.DRAWABLEDIR, mContext); 8726 WindowManager windowManager = 8727 (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE); 8728 Display display = windowManager.getDefaultDisplay(); 8729 nativeCreate(msg.arg1, drawableDir, 8730 ActivityManager.isHighEndGfx(display)); 8731 if (mDelaySetPicture != null) { 8732 setNewPicture(mDelaySetPicture, true); 8733 mDelaySetPicture = null; 8734 } 8735 if (mIsPaused) { 8736 nativeSetPauseDrawing(mNativeClass, true); 8737 } 8738 break; 8739 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8740 // Make sure that the textfield is currently focused 8741 // and representing the same node as the pointer. 8742 if (msg.arg2 == mTextGeneration) { 8743 String text = (String) msg.obj; 8744 if (null == text) { 8745 text = ""; 8746 } 8747 if (inEditingMode() && 8748 mWebTextView.isSameTextField(msg.arg1)) { 8749 mWebTextView.setTextAndKeepSelection(text); 8750 } else if (mInputConnection != null && 8751 mFieldPointer == msg.arg1) { 8752 mInputConnection.setTextAndKeepSelection(text); 8753 } 8754 } 8755 break; 8756 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8757 displaySoftKeyboard(true); 8758 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8759 case UPDATE_TEXT_SELECTION_MSG_ID: 8760 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8761 (WebViewCore.TextSelectionData) msg.obj); 8762 break; 8763 case FORM_DID_BLUR: 8764 if (inEditingMode() 8765 && mWebTextView.isSameTextField(msg.arg1)) { 8766 hideSoftKeyboard(); 8767 } 8768 break; 8769 case RETURN_LABEL: 8770 if (inEditingMode() 8771 && mWebTextView.isSameTextField(msg.arg1)) { 8772 mWebTextView.setHint((String) msg.obj); 8773 InputMethodManager imm 8774 = InputMethodManager.peekInstance(); 8775 // The hint is propagated to the IME in 8776 // onCreateInputConnection. If the IME is already 8777 // active, restart it so that its hint text is updated. 8778 if (imm != null && imm.isActive(mWebTextView)) { 8779 imm.restartInput(mWebTextView); 8780 } 8781 } 8782 break; 8783 case UNHANDLED_NAV_KEY: 8784 navHandledKey(msg.arg1, 1, false, 0); 8785 break; 8786 case UPDATE_TEXT_ENTRY_MSG_ID: 8787 // this is sent after finishing resize in WebViewCore. Make 8788 // sure the text edit box is still on the screen. 8789 if (inEditingMode() && nativeCursorIsTextInput()) { 8790 updateWebTextViewPosition(); 8791 } 8792 break; 8793 case CLEAR_TEXT_ENTRY: 8794 clearTextEntry(); 8795 break; 8796 case INVAL_RECT_MSG_ID: { 8797 Rect r = (Rect)msg.obj; 8798 if (r == null) { 8799 invalidate(); 8800 } else { 8801 // we need to scale r from content into view coords, 8802 // which viewInvalidate() does for us 8803 viewInvalidate(r.left, r.top, r.right, r.bottom); 8804 } 8805 break; 8806 } 8807 case REQUEST_FORM_DATA: 8808 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8809 if (mWebTextView.isSameTextField(msg.arg1)) { 8810 mWebTextView.setAdapterCustom(adapter); 8811 } 8812 break; 8813 8814 case LONG_PRESS_CENTER: 8815 // as this is shared by keydown and trackballdown, reset all 8816 // the states 8817 mGotCenterDown = false; 8818 mTrackballDown = false; 8819 performLongClick(); 8820 break; 8821 8822 case WEBCORE_NEED_TOUCH_EVENTS: 8823 mForwardTouchEvents = (msg.arg1 != 0); 8824 break; 8825 8826 case PREVENT_TOUCH_ID: 8827 if (inFullScreenMode()) { 8828 break; 8829 } 8830 TouchEventData ted = (TouchEventData) msg.obj; 8831 8832 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8833 // WebCore is responding to us; remove pending timeout. 8834 // It will be re-posted when needed. 8835 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8836 } 8837 break; 8838 8839 case REQUEST_KEYBOARD: 8840 if (msg.arg1 == 0) { 8841 hideSoftKeyboard(); 8842 } else { 8843 displaySoftKeyboard(false); 8844 } 8845 break; 8846 8847 case FIND_AGAIN: 8848 // Ignore if find has been dismissed. 8849 if (mFindIsUp && mFindCallback != null) { 8850 mFindCallback.findAll(); 8851 } 8852 break; 8853 8854 case DRAG_HELD_MOTIONLESS: 8855 mHeldMotionless = MOTIONLESS_TRUE; 8856 invalidate(); 8857 // fall through to keep scrollbars awake 8858 8859 case AWAKEN_SCROLL_BARS: 8860 if (mTouchMode == TOUCH_DRAG_MODE 8861 && mHeldMotionless == MOTIONLESS_TRUE) { 8862 awakenScrollBars(ViewConfiguration 8863 .getScrollDefaultDelay(), false); 8864 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8865 .obtainMessage(AWAKEN_SCROLL_BARS), 8866 ViewConfiguration.getScrollDefaultDelay()); 8867 } 8868 break; 8869 8870 case DO_MOTION_UP: 8871 doMotionUp(msg.arg1, msg.arg2); 8872 break; 8873 8874 case SCREEN_ON: 8875 setKeepScreenOn(msg.arg1 == 1); 8876 break; 8877 8878 case ENTER_FULLSCREEN_VIDEO: 8879 int layerId = msg.arg1; 8880 8881 String url = (String) msg.obj; 8882 if (mHTML5VideoViewProxy != null) { 8883 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8884 } 8885 break; 8886 8887 case EXIT_FULLSCREEN_VIDEO: 8888 if (mHTML5VideoViewProxy != null) { 8889 mHTML5VideoViewProxy.exitFullScreenVideo(); 8890 } 8891 break; 8892 8893 case SHOW_FULLSCREEN: { 8894 View view = (View) msg.obj; 8895 int orientation = msg.arg1; 8896 int npp = msg.arg2; 8897 8898 if (inFullScreenMode()) { 8899 Log.w(LOGTAG, "Should not have another full screen."); 8900 dismissFullScreenMode(); 8901 } 8902 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 8903 mFullScreenHolder.setContentView(view); 8904 mFullScreenHolder.show(); 8905 invalidate(); 8906 8907 break; 8908 } 8909 case HIDE_FULLSCREEN: 8910 dismissFullScreenMode(); 8911 break; 8912 8913 case DOM_FOCUS_CHANGED: 8914 if (inEditingMode()) { 8915 nativeClearCursor(); 8916 rebuildWebTextView(); 8917 } 8918 break; 8919 8920 case SHOW_RECT_MSG_ID: { 8921 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8922 int x = mScrollX; 8923 int left = contentToViewX(data.mLeft); 8924 int width = contentToViewDimension(data.mWidth); 8925 int maxWidth = contentToViewDimension(data.mContentWidth); 8926 int viewWidth = getViewWidth(); 8927 if (width < viewWidth) { 8928 // center align 8929 x += left + width / 2 - mScrollX - viewWidth / 2; 8930 } else { 8931 x += (int) (left + data.mXPercentInDoc * width 8932 - mScrollX - data.mXPercentInView * viewWidth); 8933 } 8934 if (DebugFlags.WEB_VIEW) { 8935 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8936 width + ",maxWidth=" + maxWidth + 8937 ",viewWidth=" + viewWidth + ",x=" 8938 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8939 ",xPercentInView=" + data.mXPercentInView+ ")"); 8940 } 8941 // use the passing content width to cap x as the current 8942 // mContentWidth may not be updated yet 8943 x = Math.max(0, 8944 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8945 int top = contentToViewY(data.mTop); 8946 int height = contentToViewDimension(data.mHeight); 8947 int maxHeight = contentToViewDimension(data.mContentHeight); 8948 int viewHeight = getViewHeight(); 8949 int y = (int) (top + data.mYPercentInDoc * height - 8950 data.mYPercentInView * viewHeight); 8951 if (DebugFlags.WEB_VIEW) { 8952 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8953 height + ",maxHeight=" + maxHeight + 8954 ",viewHeight=" + viewHeight + ",y=" 8955 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8956 ",yPercentInView=" + data.mYPercentInView+ ")"); 8957 } 8958 // use the passing content height to cap y as the current 8959 // mContentHeight may not be updated yet 8960 y = Math.max(0, 8961 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8962 // We need to take into account the visible title height 8963 // when scrolling since y is an absolute view position. 8964 y = Math.max(0, y - getVisibleTitleHeightImpl()); 8965 scrollTo(x, y); 8966 } 8967 break; 8968 8969 case CENTER_FIT_RECT: 8970 centerFitRect((Rect)msg.obj); 8971 break; 8972 8973 case SET_SCROLLBAR_MODES: 8974 mHorizontalScrollBarMode = msg.arg1; 8975 mVerticalScrollBarMode = msg.arg2; 8976 break; 8977 8978 case SELECTION_STRING_CHANGED: 8979 if (mAccessibilityInjector != null) { 8980 String selectionString = (String) msg.obj; 8981 mAccessibilityInjector.onSelectionStringChange(selectionString); 8982 } 8983 break; 8984 8985 case HIT_TEST_RESULT: 8986 WebKitHitTest hit = (WebKitHitTest) msg.obj; 8987 mFocusedNode = hit; 8988 setTouchHighlightRects(hit); 8989 if (hit == null) { 8990 mInitialHitTestResult = null; 8991 } else { 8992 mInitialHitTestResult = new HitTestResult(); 8993 if (hit.mLinkUrl != null) { 8994 mInitialHitTestResult.mType = HitTestResult.SRC_ANCHOR_TYPE; 8995 mInitialHitTestResult.mExtra = hit.mLinkUrl; 8996 if (hit.mImageUrl != null) { 8997 mInitialHitTestResult.mType = HitTestResult.SRC_IMAGE_ANCHOR_TYPE; 8998 mInitialHitTestResult.mExtra = hit.mImageUrl; 8999 } 9000 } else if (hit.mImageUrl != null) { 9001 mInitialHitTestResult.mType = HitTestResult.IMAGE_TYPE; 9002 mInitialHitTestResult.mExtra = hit.mImageUrl; 9003 } else if (hit.mEditable) { 9004 mInitialHitTestResult.mType = HitTestResult.EDIT_TEXT_TYPE; 9005 } 9006 } 9007 break; 9008 9009 case SAVE_WEBARCHIVE_FINISHED: 9010 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 9011 if (saveMessage.mCallback != null) { 9012 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 9013 } 9014 break; 9015 9016 case SET_AUTOFILLABLE: 9017 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 9018 if (mWebTextView != null) { 9019 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 9020 rebuildWebTextView(); 9021 } 9022 break; 9023 9024 case AUTOFILL_COMPLETE: 9025 if (mWebTextView != null) { 9026 // Clear the WebTextView adapter when AutoFill finishes 9027 // so that the drop down gets cleared. 9028 mWebTextView.setAdapterCustom(null); 9029 } 9030 break; 9031 9032 case SELECT_AT: 9033 nativeSelectAt(msg.arg1, msg.arg2); 9034 break; 9035 9036 case COPY_TO_CLIPBOARD: 9037 copyToClipboard((String) msg.obj); 9038 break; 9039 9040 case INIT_EDIT_FIELD: 9041 if (mInputConnection != null) { 9042 mTextGeneration = 0; 9043 mFieldPointer = msg.arg1; 9044 mInputConnection.setTextAndKeepSelection((String) msg.obj); 9045 } 9046 break; 9047 9048 case REPLACE_TEXT:{ 9049 String text = (String)msg.obj; 9050 int start = msg.arg1; 9051 int end = msg.arg2; 9052 int cursorPosition = start + text.length(); 9053 replaceTextfieldText(start, end, text, 9054 cursorPosition, cursorPosition); 9055 break; 9056 } 9057 9058 default: 9059 super.handleMessage(msg); 9060 break; 9061 } 9062 } 9063 } 9064 9065 private void setTouchHighlightRects(WebKitHitTest hit) { 9066 Rect[] rects = hit != null ? hit.mTouchRects : null; 9067 if (!mTouchHighlightRegion.isEmpty()) { 9068 invalidate(mTouchHighlightRegion.getBounds()); 9069 mTouchHighlightRegion.setEmpty(); 9070 } 9071 if (rects != null) { 9072 mTouchHightlightPaint.setColor(hit.mTapHighlightColor); 9073 for (Rect rect : rects) { 9074 Rect viewRect = contentToViewRect(rect); 9075 // some sites, like stories in nytimes.com, set 9076 // mouse event handler in the top div. It is not 9077 // user friendly to highlight the div if it covers 9078 // more than half of the screen. 9079 if (viewRect.width() < getWidth() >> 1 9080 || viewRect.height() < getHeight() >> 1) { 9081 mTouchHighlightRegion.union(viewRect); 9082 } else { 9083 Log.w(LOGTAG, "Skip the huge selection rect:" 9084 + viewRect); 9085 } 9086 } 9087 invalidate(mTouchHighlightRegion.getBounds()); 9088 } 9089 } 9090 9091 /** @hide Called by JNI when pages are swapped (only occurs with hardware 9092 * acceleration) */ 9093 protected void pageSwapCallback(boolean notifyAnimationStarted) { 9094 mWebViewCore.resumeWebKitDraw(); 9095 if (inEditingMode()) { 9096 didUpdateWebTextViewDimensions(ANYWHERE); 9097 } 9098 if (notifyAnimationStarted) { 9099 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 9100 } 9101 } 9102 9103 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 9104 if (mNativeClass == 0) { 9105 if (mDelaySetPicture != null) { 9106 throw new IllegalStateException("Tried to setNewPicture with" 9107 + " a delay picture already set! (memory leak)"); 9108 } 9109 // Not initialized yet, delay set 9110 mDelaySetPicture = draw; 9111 return; 9112 } 9113 WebViewCore.ViewState viewState = draw.mViewState; 9114 boolean isPictureAfterFirstLayout = viewState != null; 9115 9116 if (updateBaseLayer) { 9117 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 9118 getSettings().getShowVisualIndicator(), 9119 isPictureAfterFirstLayout); 9120 } 9121 final Point viewSize = draw.mViewSize; 9122 // We update the layout (i.e. request a layout from the 9123 // view system) if the last view size that we sent to 9124 // WebCore matches the view size of the picture we just 9125 // received in the fixed dimension. 9126 final boolean updateLayout = viewSize.x == mLastWidthSent 9127 && viewSize.y == mLastHeightSent; 9128 // Don't send scroll event for picture coming from webkit, 9129 // since the new picture may cause a scroll event to override 9130 // the saved history scroll position. 9131 mSendScrollEvent = false; 9132 recordNewContentSize(draw.mContentSize.x, 9133 draw.mContentSize.y, updateLayout); 9134 if (isPictureAfterFirstLayout) { 9135 // Reset the last sent data here since dealing with new page. 9136 mLastWidthSent = 0; 9137 mZoomManager.onFirstLayout(draw); 9138 int scrollX = viewState.mShouldStartScrolledRight 9139 ? getContentWidth() : viewState.mScrollX; 9140 int scrollY = viewState.mScrollY; 9141 setContentScrollTo(scrollX, scrollY); 9142 if (!mDrawHistory) { 9143 // As we are on a new page, remove the WebTextView. This 9144 // is necessary for page loads driven by webkit, and in 9145 // particular when the user was on a password field, so 9146 // the WebTextView was visible. 9147 clearTextEntry(); 9148 } 9149 } 9150 mSendScrollEvent = true; 9151 9152 if (DebugFlags.WEB_VIEW) { 9153 Rect b = draw.mInvalRegion.getBounds(); 9154 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 9155 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 9156 } 9157 invalidateContentRect(draw.mInvalRegion.getBounds()); 9158 9159 if (mPictureListener != null) { 9160 mPictureListener.onNewPicture(WebView.this, capturePicture()); 9161 } 9162 9163 // update the zoom information based on the new picture 9164 mZoomManager.onNewPicture(draw); 9165 9166 if (draw.mFocusSizeChanged && inEditingMode()) { 9167 mFocusSizeChanged = true; 9168 } 9169 if (isPictureAfterFirstLayout) { 9170 mViewManager.postReadyToDrawAll(); 9171 } 9172 } 9173 9174 /** 9175 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 9176 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 9177 */ 9178 private void updateTextSelectionFromMessage(int nodePointer, 9179 int textGeneration, WebViewCore.TextSelectionData data) { 9180 if (textGeneration == mTextGeneration) { 9181 if (inEditingMode() 9182 && mWebTextView.isSameTextField(nodePointer)) { 9183 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 9184 } else if (mInputConnection != null && mFieldPointer == nodePointer) { 9185 mInputConnection.setSelection(data.mStart, data.mEnd); 9186 } 9187 } 9188 9189 nativeSetTextSelection(mNativeClass, data.mSelectTextPtr); 9190 if (data.mSelectTextPtr != 0) { 9191 if (!mSelectingText) { 9192 setupWebkitSelect(); 9193 } else if (!mSelectionStarted) { 9194 syncSelectionCursors(); 9195 } 9196 } else { 9197 selectionDone(); 9198 } 9199 invalidate(); 9200 } 9201 9202 // Class used to use a dropdown for a <select> element 9203 private class InvokeListBox implements Runnable { 9204 // Whether the listbox allows multiple selection. 9205 private boolean mMultiple; 9206 // Passed in to a list with multiple selection to tell 9207 // which items are selected. 9208 private int[] mSelectedArray; 9209 // Passed in to a list with single selection to tell 9210 // where the initial selection is. 9211 private int mSelection; 9212 9213 private Container[] mContainers; 9214 9215 // Need these to provide stable ids to my ArrayAdapter, 9216 // which normally does not have stable ids. (Bug 1250098) 9217 private class Container extends Object { 9218 /** 9219 * Possible values for mEnabled. Keep in sync with OptionStatus in 9220 * WebViewCore.cpp 9221 */ 9222 final static int OPTGROUP = -1; 9223 final static int OPTION_DISABLED = 0; 9224 final static int OPTION_ENABLED = 1; 9225 9226 String mString; 9227 int mEnabled; 9228 int mId; 9229 9230 @Override 9231 public String toString() { 9232 return mString; 9233 } 9234 } 9235 9236 /** 9237 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 9238 * and allow filtering. 9239 */ 9240 private class MyArrayListAdapter extends ArrayAdapter<Container> { 9241 public MyArrayListAdapter() { 9242 super(mContext, 9243 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 9244 com.android.internal.R.layout.webview_select_singlechoice, 9245 mContainers); 9246 } 9247 9248 @Override 9249 public View getView(int position, View convertView, 9250 ViewGroup parent) { 9251 // Always pass in null so that we will get a new CheckedTextView 9252 // Otherwise, an item which was previously used as an <optgroup> 9253 // element (i.e. has no check), could get used as an <option> 9254 // element, which needs a checkbox/radio, but it would not have 9255 // one. 9256 convertView = super.getView(position, null, parent); 9257 Container c = item(position); 9258 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 9259 // ListView does not draw dividers between disabled and 9260 // enabled elements. Use a LinearLayout to provide dividers 9261 LinearLayout layout = new LinearLayout(mContext); 9262 layout.setOrientation(LinearLayout.VERTICAL); 9263 if (position > 0) { 9264 View dividerTop = new View(mContext); 9265 dividerTop.setBackgroundResource( 9266 android.R.drawable.divider_horizontal_bright); 9267 layout.addView(dividerTop); 9268 } 9269 9270 if (Container.OPTGROUP == c.mEnabled) { 9271 // Currently select_dialog_multichoice uses CheckedTextViews. 9272 // If that changes, the class cast will no longer be valid. 9273 if (mMultiple) { 9274 Assert.assertTrue(convertView instanceof CheckedTextView); 9275 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 9276 } 9277 } else { 9278 // c.mEnabled == Container.OPTION_DISABLED 9279 // Draw the disabled element in a disabled state. 9280 convertView.setEnabled(false); 9281 } 9282 9283 layout.addView(convertView); 9284 if (position < getCount() - 1) { 9285 View dividerBottom = new View(mContext); 9286 dividerBottom.setBackgroundResource( 9287 android.R.drawable.divider_horizontal_bright); 9288 layout.addView(dividerBottom); 9289 } 9290 return layout; 9291 } 9292 return convertView; 9293 } 9294 9295 @Override 9296 public boolean hasStableIds() { 9297 // AdapterView's onChanged method uses this to determine whether 9298 // to restore the old state. Return false so that the old (out 9299 // of date) state does not replace the new, valid state. 9300 return false; 9301 } 9302 9303 private Container item(int position) { 9304 if (position < 0 || position >= getCount()) { 9305 return null; 9306 } 9307 return getItem(position); 9308 } 9309 9310 @Override 9311 public long getItemId(int position) { 9312 Container item = item(position); 9313 if (item == null) { 9314 return -1; 9315 } 9316 return item.mId; 9317 } 9318 9319 @Override 9320 public boolean areAllItemsEnabled() { 9321 return false; 9322 } 9323 9324 @Override 9325 public boolean isEnabled(int position) { 9326 Container item = item(position); 9327 if (item == null) { 9328 return false; 9329 } 9330 return Container.OPTION_ENABLED == item.mEnabled; 9331 } 9332 } 9333 9334 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 9335 mMultiple = true; 9336 mSelectedArray = selected; 9337 9338 int length = array.length; 9339 mContainers = new Container[length]; 9340 for (int i = 0; i < length; i++) { 9341 mContainers[i] = new Container(); 9342 mContainers[i].mString = array[i]; 9343 mContainers[i].mEnabled = enabled[i]; 9344 mContainers[i].mId = i; 9345 } 9346 } 9347 9348 private InvokeListBox(String[] array, int[] enabled, int selection) { 9349 mSelection = selection; 9350 mMultiple = false; 9351 9352 int length = array.length; 9353 mContainers = new Container[length]; 9354 for (int i = 0; i < length; i++) { 9355 mContainers[i] = new Container(); 9356 mContainers[i].mString = array[i]; 9357 mContainers[i].mEnabled = enabled[i]; 9358 mContainers[i].mId = i; 9359 } 9360 } 9361 9362 /* 9363 * Whenever the data set changes due to filtering, this class ensures 9364 * that the checked item remains checked. 9365 */ 9366 private class SingleDataSetObserver extends DataSetObserver { 9367 private long mCheckedId; 9368 private ListView mListView; 9369 private Adapter mAdapter; 9370 9371 /* 9372 * Create a new observer. 9373 * @param id The ID of the item to keep checked. 9374 * @param l ListView for getting and clearing the checked states 9375 * @param a Adapter for getting the IDs 9376 */ 9377 public SingleDataSetObserver(long id, ListView l, Adapter a) { 9378 mCheckedId = id; 9379 mListView = l; 9380 mAdapter = a; 9381 } 9382 9383 @Override 9384 public void onChanged() { 9385 // The filter may have changed which item is checked. Find the 9386 // item that the ListView thinks is checked. 9387 int position = mListView.getCheckedItemPosition(); 9388 long id = mAdapter.getItemId(position); 9389 if (mCheckedId != id) { 9390 // Clear the ListView's idea of the checked item, since 9391 // it is incorrect 9392 mListView.clearChoices(); 9393 // Search for mCheckedId. If it is in the filtered list, 9394 // mark it as checked 9395 int count = mAdapter.getCount(); 9396 for (int i = 0; i < count; i++) { 9397 if (mAdapter.getItemId(i) == mCheckedId) { 9398 mListView.setItemChecked(i, true); 9399 break; 9400 } 9401 } 9402 } 9403 } 9404 } 9405 9406 @Override 9407 public void run() { 9408 final ListView listView = (ListView) LayoutInflater.from(mContext) 9409 .inflate(com.android.internal.R.layout.select_dialog, null); 9410 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 9411 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 9412 .setView(listView).setCancelable(true) 9413 .setInverseBackgroundForced(true); 9414 9415 if (mMultiple) { 9416 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 9417 @Override 9418 public void onClick(DialogInterface dialog, int which) { 9419 mWebViewCore.sendMessage( 9420 EventHub.LISTBOX_CHOICES, 9421 adapter.getCount(), 0, 9422 listView.getCheckedItemPositions()); 9423 }}); 9424 b.setNegativeButton(android.R.string.cancel, 9425 new DialogInterface.OnClickListener() { 9426 @Override 9427 public void onClick(DialogInterface dialog, int which) { 9428 mWebViewCore.sendMessage( 9429 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9430 }}); 9431 } 9432 mListBoxDialog = b.create(); 9433 listView.setAdapter(adapter); 9434 listView.setFocusableInTouchMode(true); 9435 // There is a bug (1250103) where the checks in a ListView with 9436 // multiple items selected are associated with the positions, not 9437 // the ids, so the items do not properly retain their checks when 9438 // filtered. Do not allow filtering on multiple lists until 9439 // that bug is fixed. 9440 9441 listView.setTextFilterEnabled(!mMultiple); 9442 if (mMultiple) { 9443 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 9444 int length = mSelectedArray.length; 9445 for (int i = 0; i < length; i++) { 9446 listView.setItemChecked(mSelectedArray[i], true); 9447 } 9448 } else { 9449 listView.setOnItemClickListener(new OnItemClickListener() { 9450 @Override 9451 public void onItemClick(AdapterView<?> parent, View v, 9452 int position, long id) { 9453 // Rather than sending the message right away, send it 9454 // after the page regains focus. 9455 mListBoxMessage = Message.obtain(null, 9456 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 9457 mListBoxDialog.dismiss(); 9458 mListBoxDialog = null; 9459 } 9460 }); 9461 if (mSelection != -1) { 9462 listView.setSelection(mSelection); 9463 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 9464 listView.setItemChecked(mSelection, true); 9465 DataSetObserver observer = new SingleDataSetObserver( 9466 adapter.getItemId(mSelection), listView, adapter); 9467 adapter.registerDataSetObserver(observer); 9468 } 9469 } 9470 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 9471 @Override 9472 public void onCancel(DialogInterface dialog) { 9473 mWebViewCore.sendMessage( 9474 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9475 mListBoxDialog = null; 9476 } 9477 }); 9478 mListBoxDialog.show(); 9479 } 9480 } 9481 9482 private Message mListBoxMessage; 9483 9484 /* 9485 * Request a dropdown menu for a listbox with multiple selection. 9486 * 9487 * @param array Labels for the listbox. 9488 * @param enabledArray State for each element in the list. See static 9489 * integers in Container class. 9490 * @param selectedArray Which positions are initally selected. 9491 */ 9492 void requestListBox(String[] array, int[] enabledArray, int[] 9493 selectedArray) { 9494 mPrivateHandler.post( 9495 new InvokeListBox(array, enabledArray, selectedArray)); 9496 } 9497 9498 /* 9499 * Request a dropdown menu for a listbox with single selection or a single 9500 * <select> element. 9501 * 9502 * @param array Labels for the listbox. 9503 * @param enabledArray State for each element in the list. See static 9504 * integers in Container class. 9505 * @param selection Which position is initally selected. 9506 */ 9507 void requestListBox(String[] array, int[] enabledArray, int selection) { 9508 mPrivateHandler.post( 9509 new InvokeListBox(array, enabledArray, selection)); 9510 } 9511 9512 // called by JNI 9513 private void sendMoveFocus(int frame, int node) { 9514 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 9515 new WebViewCore.CursorData(frame, node, 0, 0)); 9516 } 9517 9518 // called by JNI 9519 private void sendMoveMouse(int frame, int node, int x, int y) { 9520 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 9521 new WebViewCore.CursorData(frame, node, x, y)); 9522 } 9523 9524 /* 9525 * Send a mouse move event to the webcore thread. 9526 * 9527 * @param removeFocus Pass true to remove the WebTextView, if present. 9528 * @param stopPaintingCaret Stop drawing the blinking caret if true. 9529 * called by JNI 9530 */ 9531 @SuppressWarnings("unused") 9532 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 9533 if (removeFocus) { 9534 clearTextEntry(); 9535 } 9536 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 9537 stopPaintingCaret ? 1 : 0, 0, 9538 cursorData()); 9539 } 9540 9541 /** 9542 * Called by JNI to send a message to the webcore thread that the user 9543 * touched the webpage. 9544 * @param touchGeneration Generation number of the touch, to ignore touches 9545 * after a new one has been generated. 9546 * @param frame Pointer to the frame holding the node that was touched. 9547 * @param node Pointer to the node touched. 9548 * @param x x-position of the touch. 9549 * @param y y-position of the touch. 9550 */ 9551 private void sendMotionUp(int touchGeneration, 9552 int frame, int node, int x, int y) { 9553 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 9554 touchUpData.mMoveGeneration = touchGeneration; 9555 touchUpData.mFrame = frame; 9556 touchUpData.mNode = node; 9557 touchUpData.mX = x; 9558 touchUpData.mY = y; 9559 touchUpData.mNativeLayer = nativeScrollableLayer( 9560 x, y, touchUpData.mNativeLayerRect, null); 9561 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 9562 } 9563 9564 9565 private int getScaledMaxXScroll() { 9566 int width; 9567 if (mHeightCanMeasure == false) { 9568 width = getViewWidth() / 4; 9569 } else { 9570 Rect visRect = new Rect(); 9571 calcOurVisibleRect(visRect); 9572 width = visRect.width() / 2; 9573 } 9574 // FIXME the divisor should be retrieved from somewhere 9575 return viewToContentX(width); 9576 } 9577 9578 private int getScaledMaxYScroll() { 9579 int height; 9580 if (mHeightCanMeasure == false) { 9581 height = getViewHeight() / 4; 9582 } else { 9583 Rect visRect = new Rect(); 9584 calcOurVisibleRect(visRect); 9585 height = visRect.height() / 2; 9586 } 9587 // FIXME the divisor should be retrieved from somewhere 9588 // the closest thing today is hard-coded into ScrollView.java 9589 // (from ScrollView.java, line 363) int maxJump = height/2; 9590 return Math.round(height * mZoomManager.getInvScale()); 9591 } 9592 9593 /** 9594 * Called by JNI to invalidate view 9595 */ 9596 private void viewInvalidate() { 9597 invalidate(); 9598 } 9599 9600 /** 9601 * Pass the key directly to the page. This assumes that 9602 * nativePageShouldHandleShiftAndArrows() returned true. 9603 */ 9604 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 9605 int keyEventAction; 9606 int eventHubAction; 9607 if (down) { 9608 keyEventAction = KeyEvent.ACTION_DOWN; 9609 eventHubAction = EventHub.KEY_DOWN; 9610 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 9611 } else { 9612 keyEventAction = KeyEvent.ACTION_UP; 9613 eventHubAction = EventHub.KEY_UP; 9614 } 9615 9616 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 9617 1, (metaState & KeyEvent.META_SHIFT_ON) 9618 | (metaState & KeyEvent.META_ALT_ON) 9619 | (metaState & KeyEvent.META_SYM_ON) 9620 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 9621 mWebViewCore.sendMessage(eventHubAction, event); 9622 } 9623 9624 // return true if the key was handled 9625 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 9626 long time) { 9627 if (mNativeClass == 0) { 9628 return false; 9629 } 9630 mInitialHitTestResult = null; 9631 mLastCursorTime = time; 9632 mLastCursorBounds = nativeGetCursorRingBounds(); 9633 boolean keyHandled 9634 = nativeMoveCursor(keyCode, count, noScroll) == false; 9635 if (DebugFlags.WEB_VIEW) { 9636 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 9637 + " mLastCursorTime=" + mLastCursorTime 9638 + " handled=" + keyHandled); 9639 } 9640 if (keyHandled == false) { 9641 return keyHandled; 9642 } 9643 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 9644 if (contentCursorRingBounds.isEmpty()) return keyHandled; 9645 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 9646 // set last touch so that context menu related functions will work 9647 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 9648 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 9649 if (mHeightCanMeasure == false) { 9650 return keyHandled; 9651 } 9652 Rect visRect = new Rect(); 9653 calcOurVisibleRect(visRect); 9654 Rect outset = new Rect(visRect); 9655 int maxXScroll = visRect.width() / 2; 9656 int maxYScroll = visRect.height() / 2; 9657 outset.inset(-maxXScroll, -maxYScroll); 9658 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 9659 return keyHandled; 9660 } 9661 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 9662 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 9663 maxXScroll); 9664 if (maxH > 0) { 9665 pinScrollBy(maxH, 0, true, 0); 9666 } else { 9667 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 9668 -maxXScroll); 9669 if (maxH < 0) { 9670 pinScrollBy(maxH, 0, true, 0); 9671 } 9672 } 9673 if (mLastCursorBounds.isEmpty()) return keyHandled; 9674 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 9675 return keyHandled; 9676 } 9677 if (DebugFlags.WEB_VIEW) { 9678 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 9679 + contentCursorRingBounds); 9680 } 9681 requestRectangleOnScreen(viewCursorRingBounds); 9682 return keyHandled; 9683 } 9684 9685 /** 9686 * @return Whether accessibility script has been injected. 9687 */ 9688 private boolean accessibilityScriptInjected() { 9689 // TODO: Maybe the injected script should announce its presence in 9690 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 9691 // will check that as one of the conditions it looks for 9692 return mAccessibilityScriptInjected; 9693 } 9694 9695 /** 9696 * Set the background color. It's white by default. Pass 9697 * zero to make the view transparent. 9698 * @param color the ARGB color described by Color.java 9699 */ 9700 @Override 9701 public void setBackgroundColor(int color) { 9702 mBackgroundColor = color; 9703 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 9704 } 9705 9706 /** 9707 * @deprecated This method is now obsolete. 9708 */ 9709 @Deprecated 9710 public void debugDump() { 9711 checkThread(); 9712 nativeDebugDump(); 9713 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 9714 } 9715 9716 /** 9717 * Draw the HTML page into the specified canvas. This call ignores any 9718 * view-specific zoom, scroll offset, or other changes. It does not draw 9719 * any view-specific chrome, such as progress or URL bars. 9720 * 9721 * @hide only needs to be accessible to Browser and testing 9722 */ 9723 public void drawPage(Canvas canvas) { 9724 calcOurContentVisibleRectF(mVisibleContentRect); 9725 nativeDraw(canvas, mVisibleContentRect, 0, 0, false); 9726 } 9727 9728 /** 9729 * Enable the communication b/t the webView and VideoViewProxy 9730 * 9731 * @hide only used by the Browser 9732 */ 9733 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 9734 mHTML5VideoViewProxy = proxy; 9735 } 9736 9737 /** 9738 * Set the time to wait between passing touches to WebCore. See also the 9739 * TOUCH_SENT_INTERVAL member for further discussion. 9740 * 9741 * @hide This is only used by the DRT test application. 9742 */ 9743 public void setTouchInterval(int interval) { 9744 mCurrentTouchInterval = interval; 9745 } 9746 9747 /** 9748 * Copy text into the clipboard. This is called indirectly from 9749 * WebViewCore. 9750 * @param text The text to put into the clipboard. 9751 */ 9752 private void copyToClipboard(String text) { 9753 ClipboardManager cm = (ClipboardManager)getContext() 9754 .getSystemService(Context.CLIPBOARD_SERVICE); 9755 ClipData clip = ClipData.newPlainText(getTitle(), text); 9756 cm.setPrimaryClip(clip); 9757 } 9758 9759 /** 9760 * Update our cache with updatedText. 9761 * @param updatedText The new text to put in our cache. 9762 * @hide 9763 */ 9764 protected void updateCachedTextfield(String updatedText) { 9765 // Also place our generation number so that when we look at the cache 9766 // we recognize that it is up to date. 9767 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 9768 } 9769 9770 /*package*/ void autoFillForm(int autoFillQueryId) { 9771 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 9772 } 9773 9774 /* package */ ViewManager getViewManager() { 9775 return mViewManager; 9776 } 9777 9778 private static void checkThread() { 9779 if (Looper.myLooper() != Looper.getMainLooper()) { 9780 Throwable throwable = new Throwable( 9781 "Warning: A WebView method was called on thread '" + 9782 Thread.currentThread().getName() + "'. " + 9783 "All WebView methods must be called on the UI thread. " + 9784 "Future versions of WebView may not support use on other threads."); 9785 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 9786 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 9787 } 9788 } 9789 9790 /** @hide send content invalidate */ 9791 protected void contentInvalidateAll() { 9792 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 9793 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 9794 } 9795 } 9796 9797 /** @hide discard all textures from tiles */ 9798 protected void discardAllTextures() { 9799 nativeDiscardAllTextures(); 9800 } 9801 9802 /** 9803 * Begin collecting per-tile profiling data 9804 * 9805 * @hide only used by profiling tests 9806 */ 9807 public void tileProfilingStart() { 9808 nativeTileProfilingStart(); 9809 } 9810 /** 9811 * Return per-tile profiling data 9812 * 9813 * @hide only used by profiling tests 9814 */ 9815 public float tileProfilingStop() { 9816 return nativeTileProfilingStop(); 9817 } 9818 9819 /** @hide only used by profiling tests */ 9820 public void tileProfilingClear() { 9821 nativeTileProfilingClear(); 9822 } 9823 /** @hide only used by profiling tests */ 9824 public int tileProfilingNumFrames() { 9825 return nativeTileProfilingNumFrames(); 9826 } 9827 /** @hide only used by profiling tests */ 9828 public int tileProfilingNumTilesInFrame(int frame) { 9829 return nativeTileProfilingNumTilesInFrame(frame); 9830 } 9831 /** @hide only used by profiling tests */ 9832 public int tileProfilingGetInt(int frame, int tile, String key) { 9833 return nativeTileProfilingGetInt(frame, tile, key); 9834 } 9835 /** @hide only used by profiling tests */ 9836 public float tileProfilingGetFloat(int frame, int tile, String key) { 9837 return nativeTileProfilingGetFloat(frame, tile, key); 9838 } 9839 9840 /** 9841 * Checks the focused content for an editable text field. This can be 9842 * text input or ContentEditable. 9843 * @return true if the focused item is an editable text field. 9844 */ 9845 boolean focusCandidateIsEditableText() { 9846 boolean isEditable = false; 9847 // TODO: reverse sDisableNavcache so that its name is positive 9848 boolean isNavcacheEnabled = !sDisableNavcache; 9849 if (isNavcacheEnabled) { 9850 isEditable = nativeFocusCandidateIsEditableText(mNativeClass); 9851 } else if (mFocusedNode != null) { 9852 isEditable = mFocusedNode.mEditable; 9853 } 9854 return isEditable; 9855 } 9856 9857 private native int nativeCacheHitFramePointer(); 9858 private native boolean nativeCacheHitIsPlugin(); 9859 private native Rect nativeCacheHitNodeBounds(); 9860 private native int nativeCacheHitNodePointer(); 9861 /* package */ native void nativeClearCursor(); 9862 private native void nativeCreate(int ptr, String drawableDir, boolean isHighEndGfx); 9863 private native int nativeCursorFramePointer(); 9864 private native Rect nativeCursorNodeBounds(); 9865 private native int nativeCursorNodePointer(); 9866 private native boolean nativeCursorIntersects(Rect visibleRect); 9867 private native boolean nativeCursorIsAnchor(); 9868 private native boolean nativeCursorIsTextInput(); 9869 private native Point nativeCursorPosition(); 9870 private native String nativeCursorText(); 9871 /** 9872 * Returns true if the native cursor node says it wants to handle key events 9873 * (ala plugins). This can only be called if mNativeClass is non-zero! 9874 */ 9875 private native boolean nativeCursorWantsKeyEvents(); 9876 private native void nativeDebugDump(); 9877 private native void nativeDestroy(); 9878 9879 /** 9880 * Draw the picture set with a background color and extra. If 9881 * "splitIfNeeded" is true and the return value is not 0, the return value 9882 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 9883 * native allocation can be freed. 9884 */ 9885 private native int nativeDraw(Canvas canvas, RectF visibleRect, 9886 int color, int extra, boolean splitIfNeeded); 9887 private native void nativeDumpDisplayTree(String urlOrNull); 9888 private native boolean nativeEvaluateLayersAnimations(int nativeInstance); 9889 private native int nativeGetDrawGLFunction(int nativeInstance, Rect rect, 9890 Rect viewRect, RectF visibleRect, float scale, int extras); 9891 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect, 9892 RectF visibleRect, float scale); 9893 private native void nativeExtendSelection(int x, int y); 9894 private native int nativeFindAll(String findLower, String findUpper, 9895 boolean sameAsLastSearch); 9896 private native void nativeFindNext(boolean forward); 9897 /* package */ native int nativeFocusCandidateFramePointer(); 9898 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 9899 /* package */ native boolean nativeFocusCandidateIsPassword(); 9900 private native boolean nativeFocusCandidateIsRtlText(); 9901 private native boolean nativeFocusCandidateIsTextInput(); 9902 private native boolean nativeFocusCandidateIsEditableText(int nativeClass); 9903 /* package */ native int nativeFocusCandidateMaxLength(); 9904 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 9905 /* package */ native boolean nativeFocusCandidateIsSpellcheck(); 9906 /* package */ native String nativeFocusCandidateName(); 9907 private native Rect nativeFocusCandidateNodeBounds(); 9908 /** 9909 * @return A Rect with left, top, right, bottom set to the corresponding 9910 * padding values in the focus candidate, if it is a textfield/textarea with 9911 * a style. Otherwise return null. This is not actually a rectangle; Rect 9912 * is being used to pass four integers. 9913 */ 9914 private native Rect nativeFocusCandidatePaddingRect(); 9915 /* package */ native int nativeFocusCandidatePointer(); 9916 private native String nativeFocusCandidateText(); 9917 /* package */ native float nativeFocusCandidateTextSize(); 9918 /* package */ native int nativeFocusCandidateLineHeight(); 9919 /** 9920 * Returns an integer corresponding to WebView.cpp::type. 9921 * See WebTextView.setType() 9922 */ 9923 private native int nativeFocusCandidateType(); 9924 private native int nativeFocusCandidateLayerId(); 9925 private native boolean nativeFocusIsPlugin(); 9926 private native Rect nativeFocusNodeBounds(); 9927 /* package */ native int nativeFocusNodePointer(); 9928 private native Rect nativeGetCursorRingBounds(); 9929 private native String nativeGetSelection(); 9930 private native boolean nativeHasCursorNode(); 9931 private native boolean nativeHasFocusNode(); 9932 private native void nativeHideCursor(); 9933 private native boolean nativeHitSelection(int x, int y); 9934 private native String nativeImageURI(int x, int y); 9935 private native Rect nativeLayerBounds(int layer); 9936 /* package */ native boolean nativeMoveCursorToNextTextInput(); 9937 // return true if the page has been scrolled 9938 private native boolean nativeMotionUp(int x, int y, int slop); 9939 // returns false if it handled the key 9940 private native boolean nativeMoveCursor(int keyCode, int count, 9941 boolean noScroll); 9942 private native int nativeMoveGeneration(); 9943 /** 9944 * @return true if the page should get the shift and arrow keys, rather 9945 * than select text/navigation. 9946 * 9947 * If the focus is a plugin, or if the focus and cursor match and are 9948 * a contentEditable element, then the page should handle these keys. 9949 */ 9950 private native boolean nativePageShouldHandleShiftAndArrows(); 9951 private native boolean nativePointInNavCache(int x, int y, int slop); 9952 private native void nativeSelectBestAt(Rect rect); 9953 private native void nativeSelectAt(int x, int y); 9954 private native int nativeFindIndex(); 9955 private native void nativeSetExtendSelection(); 9956 private native void nativeSetFindIsEmpty(); 9957 private native void nativeSetFindIsUp(boolean isUp); 9958 private native void nativeSetHeightCanMeasure(boolean measure); 9959 private native boolean nativeSetBaseLayer(int nativeInstance, 9960 int layer, Region invalRegion, 9961 boolean showVisualIndicator, boolean isPictureAfterFirstLayout); 9962 private native int nativeGetBaseLayer(); 9963 private native void nativeShowCursorTimed(); 9964 private native void nativeReplaceBaseContent(int content); 9965 private native void nativeCopyBaseContentToPicture(Picture pict); 9966 private native boolean nativeHasContent(); 9967 private native void nativeSetSelectionPointer(int nativeInstance, 9968 boolean set, float scale, int x, int y); 9969 private native boolean nativeStartSelection(int x, int y); 9970 private native void nativeStopGL(); 9971 private native Rect nativeSubtractLayers(Rect content); 9972 private native int nativeTextGeneration(); 9973 private native void nativeDiscardAllTextures(); 9974 private native void nativeTileProfilingStart(); 9975 private native float nativeTileProfilingStop(); 9976 private native void nativeTileProfilingClear(); 9977 private native int nativeTileProfilingNumFrames(); 9978 private native int nativeTileProfilingNumTilesInFrame(int frame); 9979 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 9980 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 9981 // Never call this version except by updateCachedTextfield(String) - 9982 // we always want to pass in our generation number. 9983 private native void nativeUpdateCachedTextfield(String updatedText, 9984 int generation); 9985 private native boolean nativeWordSelection(int x, int y); 9986 // return NO_LEFTEDGE means failure. 9987 static final int NO_LEFTEDGE = -1; 9988 native int nativeGetBlockLeftEdge(int x, int y, float scale); 9989 9990 private native void nativeUseHardwareAccelSkia(boolean enabled); 9991 9992 // Returns a pointer to the scrollable LayerAndroid at the given point. 9993 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 9994 Rect scrollBounds); 9995 /** 9996 * Scroll the specified layer. 9997 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 9998 * @param newX Destination x position to which to scroll. 9999 * @param newY Destination y position to which to scroll. 10000 * @return True if the layer is successfully scrolled. 10001 */ 10002 private native boolean nativeScrollLayer(int layer, int newX, int newY); 10003 private native void nativeSetIsScrolling(boolean isScrolling); 10004 private native int nativeGetBackgroundColor(); 10005 native boolean nativeSetProperty(String key, String value); 10006 native String nativeGetProperty(String key); 10007 /** 10008 * See {@link ComponentCallbacks2} for the trim levels and descriptions 10009 */ 10010 private static native void nativeOnTrimMemory(int level); 10011 private static native void nativeSetPauseDrawing(int instance, boolean pause); 10012 private static native boolean nativeDisableNavcache(); 10013 private static native void nativeSetTextSelection(int instance, int selection); 10014 private static native int nativeGetHandleLayerId(int instance, int handle, 10015 Rect cursorLocation); 10016 private static native boolean nativeIsBaseFirst(int instance); 10017} 10018