WebView.java revision fbf9cf8d6bfd3ab1f0bc25675d57663f892804f3
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.animation.ObjectAnimator; 20import android.annotation.Widget; 21import android.app.ActivityManager; 22import android.app.AlertDialog; 23import android.content.BroadcastReceiver; 24import android.content.ClipData; 25import android.content.ClipboardManager; 26import android.content.ComponentCallbacks2; 27import android.content.Context; 28import android.content.DialogInterface; 29import android.content.DialogInterface.OnCancelListener; 30import android.content.Intent; 31import android.content.IntentFilter; 32import android.content.pm.PackageManager; 33import android.content.res.Configuration; 34import android.database.DataSetObserver; 35import android.graphics.Bitmap; 36import android.graphics.BitmapFactory; 37import android.graphics.BitmapShader; 38import android.graphics.Canvas; 39import android.graphics.Color; 40import android.graphics.ColorFilter; 41import android.graphics.DrawFilter; 42import android.graphics.Paint; 43import android.graphics.PaintFlagsDrawFilter; 44import android.graphics.Picture; 45import android.graphics.Point; 46import android.graphics.Rect; 47import android.graphics.RectF; 48import android.graphics.Region; 49import android.graphics.RegionIterator; 50import android.graphics.Shader; 51import android.graphics.drawable.Drawable; 52import android.net.Proxy; 53import android.net.ProxyProperties; 54import android.net.Uri; 55import android.net.http.SslCertificate; 56import android.os.AsyncTask; 57import android.os.Bundle; 58import android.os.Handler; 59import android.os.Looper; 60import android.os.Message; 61import android.os.StrictMode; 62import android.os.SystemClock; 63import android.provider.Settings; 64import android.security.KeyChain; 65import android.speech.tts.TextToSpeech; 66import android.text.Editable; 67import android.text.InputType; 68import android.text.Selection; 69import android.text.TextUtils; 70import android.util.AttributeSet; 71import android.util.EventLog; 72import android.util.Log; 73import android.view.Display; 74import android.view.Gravity; 75import android.view.HapticFeedbackConstants; 76import android.view.HardwareCanvas; 77import android.view.InputDevice; 78import android.view.KeyCharacterMap; 79import android.view.KeyEvent; 80import android.view.LayoutInflater; 81import android.view.MotionEvent; 82import android.view.ScaleGestureDetector; 83import android.view.SoundEffectConstants; 84import android.view.VelocityTracker; 85import android.view.View; 86import android.view.ViewConfiguration; 87import android.view.ViewGroup; 88import android.view.ViewParent; 89import android.view.ViewTreeObserver; 90import android.view.WindowManager; 91import android.view.accessibility.AccessibilityEvent; 92import android.view.accessibility.AccessibilityManager; 93import android.view.accessibility.AccessibilityNodeInfo; 94import android.view.inputmethod.BaseInputConnection; 95import android.view.inputmethod.EditorInfo; 96import android.view.inputmethod.InputConnection; 97import android.view.inputmethod.InputMethodManager; 98import android.webkit.WebTextView.AutoCompleteAdapter; 99import android.webkit.WebViewCore.DrawData; 100import android.webkit.WebViewCore.EventHub; 101import android.webkit.WebViewCore.TouchEventData; 102import android.webkit.WebViewCore.TouchHighlightData; 103import android.webkit.WebViewCore.WebKitHitTest; 104import android.widget.AbsoluteLayout; 105import android.widget.Adapter; 106import android.widget.AdapterView; 107import android.widget.AdapterView.OnItemClickListener; 108import android.widget.ArrayAdapter; 109import android.widget.CheckedTextView; 110import android.widget.LinearLayout; 111import android.widget.ListView; 112import android.widget.OverScroller; 113import android.widget.Toast; 114 115import junit.framework.Assert; 116 117import java.io.File; 118import java.io.FileInputStream; 119import java.io.FileNotFoundException; 120import java.io.FileOutputStream; 121import java.io.IOException; 122import java.io.InputStream; 123import java.io.OutputStream; 124import java.net.URLDecoder; 125import java.util.ArrayList; 126import java.util.HashMap; 127import java.util.HashSet; 128import java.util.List; 129import java.util.Map; 130import java.util.Set; 131import java.util.Vector; 132import java.util.regex.Matcher; 133import java.util.regex.Pattern; 134 135/** 136 * <p>A View that displays web pages. This class is the basis upon which you 137 * can roll your own web browser or simply display some online content within your Activity. 138 * It uses the WebKit rendering engine to display 139 * web pages and includes methods to navigate forward and backward 140 * through a history, zoom in and out, perform text searches and more.</p> 141 * <p>To enable the built-in zoom, set 142 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 143 * (introduced in API version 3). 144 * <p>Note that, in order for your Activity to access the Internet and load web pages 145 * in a WebView, you must add the {@code INTERNET} permissions to your 146 * Android Manifest file:</p> 147 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 148 * 149 * <p>This must be a child of the <a 150 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 151 * element.</p> 152 * 153 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 154 * tutorial</a>.</p> 155 * 156 * <h3>Basic usage</h3> 157 * 158 * <p>By default, a WebView provides no browser-like widgets, does not 159 * enable JavaScript and web page errors are ignored. If your goal is only 160 * to display some HTML as a part of your UI, this is probably fine; 161 * the user won't need to interact with the web page beyond reading 162 * it, and the web page won't need to interact with the user. If you 163 * actually want a full-blown web browser, then you probably want to 164 * invoke the Browser application with a URL Intent rather than show it 165 * with a WebView. For example: 166 * <pre> 167 * Uri uri = Uri.parse("http://www.example.com"); 168 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 169 * startActivity(intent); 170 * </pre> 171 * <p>See {@link android.content.Intent} for more information.</p> 172 * 173 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 174 * or set the entire Activity window as a WebView during {@link 175 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 176 * <pre class="prettyprint"> 177 * WebView webview = new WebView(this); 178 * setContentView(webview); 179 * </pre> 180 * 181 * <p>Then load the desired web page:</p> 182 * <pre> 183 * // Simplest usage: note that an exception will NOT be thrown 184 * // if there is an error loading this page (see below). 185 * webview.loadUrl("http://slashdot.org/"); 186 * 187 * // OR, you can also load from an HTML string: 188 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 189 * webview.loadData(summary, "text/html", null); 190 * // ... although note that there are restrictions on what this HTML can do. 191 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 192 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 193 * </pre> 194 * 195 * <p>A WebView has several customization points where you can add your 196 * own behavior. These are:</p> 197 * 198 * <ul> 199 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 200 * This class is called when something that might impact a 201 * browser UI happens, for instance, progress updates and 202 * JavaScript alerts are sent here (see <a 203 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 204 * </li> 205 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 206 * It will be called when things happen that impact the 207 * rendering of the content, eg, errors or form submissions. You 208 * can also intercept URL loading here (via {@link 209 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 210 * shouldOverrideUrlLoading()}).</li> 211 * <li>Modifying the {@link android.webkit.WebSettings}, such as 212 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 213 * setJavaScriptEnabled()}. </li> 214 * <li>Injecting Java objects into the WebView using the 215 * {@link android.webkit.WebView#addJavascriptInterface} method. This 216 * method allows you to inject Java objects into a page's JavaScript 217 * context, so that they can be accessed by JavaScript in the page.</li> 218 * </ul> 219 * 220 * <p>Here's a more complicated example, showing error handling, 221 * settings, and progress notification:</p> 222 * 223 * <pre class="prettyprint"> 224 * // Let's display the progress in the activity title bar, like the 225 * // browser app does. 226 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 227 * 228 * webview.getSettings().setJavaScriptEnabled(true); 229 * 230 * final Activity activity = this; 231 * webview.setWebChromeClient(new WebChromeClient() { 232 * public void onProgressChanged(WebView view, int progress) { 233 * // Activities and WebViews measure progress with different scales. 234 * // The progress meter will automatically disappear when we reach 100% 235 * activity.setProgress(progress * 1000); 236 * } 237 * }); 238 * webview.setWebViewClient(new WebViewClient() { 239 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 240 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 241 * } 242 * }); 243 * 244 * webview.loadUrl("http://slashdot.org/"); 245 * </pre> 246 * 247 * <h3>Cookie and window management</h3> 248 * 249 * <p>For obvious security reasons, your application has its own 250 * cache, cookie store etc.—it does not share the Browser 251 * application's data. Cookies are managed on a separate thread, so 252 * operations like index building don't block the UI 253 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 254 * if you want to use cookies in your application. 255 * </p> 256 * 257 * <p>By default, requests by the HTML to open new windows are 258 * ignored. This is true whether they be opened by JavaScript or by 259 * the target attribute on a link. You can customize your 260 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 261 * and render them in whatever manner you want.</p> 262 * 263 * <p>The standard behavior for an Activity is to be destroyed and 264 * recreated when the device orientation or any other configuration changes. This will cause 265 * the WebView to reload the current page. If you don't want that, you 266 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 267 * changes, and then just leave the WebView alone. It'll automatically 268 * re-orient itself as appropriate. Read <a 269 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 270 * more information about how to handle configuration changes during runtime.</p> 271 * 272 * 273 * <h3>Building web pages to support different screen densities</h3> 274 * 275 * <p>The screen density of a device is based on the screen resolution. A screen with low density 276 * has fewer available pixels per inch, where a screen with high density 277 * has more — sometimes significantly more — pixels per inch. The density of a 278 * screen is important because, other things being equal, a UI element (such as a button) whose 279 * height and width are defined in terms of screen pixels will appear larger on the lower density 280 * screen and smaller on the higher density screen. 281 * For simplicity, Android collapses all actual screen densities into three generalized densities: 282 * high, medium, and low.</p> 283 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 284 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 285 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 286 * are bigger). 287 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 288 * you (as a web developer) target screens with different screen densities.</p> 289 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 290 * <ul> 291 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 292 * default scaling factor used for the current device. For example, if the value of {@code 293 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 294 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 295 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 296 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 297 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 298 * (discussed below), then you can stop this default scaling behavior.</li> 299 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 300 * densities for which this style sheet is to be used. The corresponding value should be either 301 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 302 * density, or high density screens, respectively. For example: 303 * <pre> 304 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 305 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 306 * which is the high density pixel ratio.</p> 307 * </li> 308 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 309 * this to specify the target density for which the web page is designed, using the following 310 * values: 311 * <ul> 312 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 313 * occurs.</li> 314 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 315 * as appropriate.</li> 316 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 317 * low density screens scale down. This is also the default behavior.</li> 318 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 319 * as appropriate.</li> 320 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 321 * values are 70-400).</li> 322 * </ul> 323 * <p>Here's an example meta tag to specify the target density:</p> 324 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 325 * </ul> 326 * <p>If you want to modify your web page for different densities, by using the {@code 327 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 328 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 329 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 330 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 331 * 332 * <h3>HTML5 Video support</h3> 333 * 334 * <p>In order to support inline HTML5 video in your application, you need to have hardware 335 * acceleration turned on, and set a {@link android.webkit.WebChromeClient}. For full screen support, 336 * implementations of {@link WebChromeClient#onShowCustomView(View, WebChromeClient.CustomViewCallback)} 337 * and {@link WebChromeClient#onHideCustomView()} are required, 338 * {@link WebChromeClient#getVideoLoadingProgressView()} is optional. 339 * </p> 340 * 341 * 342 */ 343@Widget 344public class WebView extends AbsoluteLayout 345 implements ViewTreeObserver.OnGlobalFocusChangeListener, 346 ViewGroup.OnHierarchyChangeListener { 347 348 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 349 @Override 350 public void onGlobalLayout() { 351 if (isShown()) { 352 setGLRectViewport(); 353 } 354 } 355 } 356 357 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 358 @Override 359 public void onScrollChanged() { 360 if (isShown()) { 361 setGLRectViewport(); 362 } 363 } 364 } 365 366 /** 367 * InputConnection used for ContentEditable. This captures changes 368 * to the text and sends them either as key strokes or text changes. 369 */ 370 private class WebViewInputConnection extends BaseInputConnection { 371 // Used for mapping characters to keys typed. 372 private KeyCharacterMap mKeyCharacterMap; 373 private boolean mIsKeySentByMe; 374 375 public WebViewInputConnection() { 376 super(WebView.this, true); 377 } 378 379 @Override 380 public boolean sendKeyEvent(KeyEvent event) { 381 // Latin IME occasionally sends delete codes directly using 382 // sendKeyEvents. WebViewInputConnection should treat this 383 // as a deleteSurroundingText. 384 if (!mIsKeySentByMe 385 && event.getKeyCode() == KeyEvent.KEYCODE_DEL) { 386 Editable editable = getEditable(); 387 int selectionStart = Selection.getSelectionStart(editable); 388 int selectionEnd = Selection.getSelectionEnd(editable); 389 if (selectionEnd > 0 && (selectionStart == selectionEnd)) { 390 int action = event.getAction(); 391 if (action == KeyEvent.ACTION_UP) { 392 return deleteSurroundingText(1, 0); 393 } else if (action == KeyEvent.ACTION_DOWN) { 394 return true; // the delete will happen in ACTION_UP 395 } 396 } 397 } 398 return super.sendKeyEvent(event); 399 } 400 401 public void setTextAndKeepSelection(CharSequence text) { 402 Editable editable = getEditable(); 403 int selectionStart = Selection.getSelectionStart(editable); 404 int selectionEnd = Selection.getSelectionEnd(editable); 405 editable.replace(0, editable.length(), text); 406 InputMethodManager imm = InputMethodManager.peekInstance(); 407 if (imm != null) { 408 // Since the text has changed, do not allow the IME to replace the 409 // existing text as though it were a completion. 410 imm.restartInput(WebView.this); 411 } 412 // Keep the previous selection. 413 selectionStart = Math.min(selectionStart, editable.length()); 414 selectionEnd = Math.min(selectionEnd, editable.length()); 415 setSelection(selectionStart, selectionEnd); 416 } 417 418 @Override 419 public boolean setComposingText(CharSequence text, int newCursorPosition) { 420 Editable editable = getEditable(); 421 int start = getComposingSpanStart(editable); 422 int end = getComposingSpanEnd(editable); 423 if (start < 0 || end < 0) { 424 start = Selection.getSelectionStart(editable); 425 end = Selection.getSelectionEnd(editable); 426 } 427 if (end < start) { 428 int temp = end; 429 end = start; 430 start = temp; 431 } 432 setNewText(start, end, text); 433 return super.setComposingText(text, newCursorPosition); 434 } 435 436 @Override 437 public boolean commitText(CharSequence text, int newCursorPosition) { 438 setComposingText(text, newCursorPosition); 439 int cursorPosition = Selection.getSelectionEnd(getEditable()); 440 setComposingRegion(cursorPosition, cursorPosition); 441 return true; 442 } 443 444 @Override 445 public boolean deleteSurroundingText(int leftLength, int rightLength) { 446 Editable editable = getEditable(); 447 int cursorPosition = Selection.getSelectionEnd(editable); 448 int startDelete = Math.max(0, cursorPosition - leftLength); 449 int endDelete = Math.min(editable.length(), 450 cursorPosition + rightLength); 451 setNewText(startDelete, endDelete, ""); 452 return super.deleteSurroundingText(leftLength, rightLength); 453 } 454 455 /** 456 * Sends a text change to webkit indirectly. If it is a single- 457 * character add or delete, it sends it as a key stroke. If it cannot 458 * be represented as a key stroke, it sends it as a field change. 459 * @param start The start offset (inclusive) of the text being changed. 460 * @param end The end offset (exclusive) of the text being changed. 461 * @param text The new text to replace the changed text. 462 */ 463 private void setNewText(int start, int end, CharSequence text) { 464 mIsKeySentByMe = true; 465 Editable editable = getEditable(); 466 CharSequence original = editable.subSequence(start, end); 467 boolean isCharacterAdd = false; 468 boolean isCharacterDelete = false; 469 int textLength = text.length(); 470 int originalLength = original.length(); 471 if (textLength > originalLength) { 472 isCharacterAdd = (textLength == originalLength + 1) 473 && TextUtils.regionMatches(text, 0, original, 0, 474 originalLength); 475 } else if (originalLength > textLength) { 476 isCharacterDelete = (textLength == originalLength - 1) 477 && TextUtils.regionMatches(text, 0, original, 0, 478 textLength); 479 } 480 if (isCharacterAdd) { 481 sendCharacter(text.charAt(textLength - 1)); 482 } else if (isCharacterDelete) { 483 sendDeleteKey(); 484 } else if (textLength != originalLength || 485 !TextUtils.regionMatches(text, 0, original, 0, 486 textLength)) { 487 // Send a message so that key strokes and text replacement 488 // do not come out of order. 489 Message replaceMessage = mPrivateHandler.obtainMessage( 490 REPLACE_TEXT, start, end, text.toString()); 491 mPrivateHandler.sendMessage(replaceMessage); 492 } 493 mIsKeySentByMe = false; 494 } 495 496 /** 497 * Send a single character to the WebView as a key down and up event. 498 * @param c The character to be sent. 499 */ 500 private void sendCharacter(char c) { 501 if (mKeyCharacterMap == null) { 502 mKeyCharacterMap = KeyCharacterMap.load(KeyCharacterMap.VIRTUAL_KEYBOARD); 503 } 504 char[] chars = new char[1]; 505 chars[0] = c; 506 KeyEvent[] events = mKeyCharacterMap.getEvents(chars); 507 if (events != null) { 508 for (KeyEvent event : events) { 509 sendKeyEvent(event); 510 } 511 } 512 } 513 514 /** 515 * Send the delete character as a key down and up event. 516 */ 517 private void sendDeleteKey() { 518 long eventTime = SystemClock.uptimeMillis(); 519 sendKeyEvent(new KeyEvent(eventTime, eventTime, 520 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL, 0, 0, 521 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 522 KeyEvent.FLAG_SOFT_KEYBOARD)); 523 sendKeyEvent(new KeyEvent(SystemClock.uptimeMillis(), eventTime, 524 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DEL, 0, 0, 525 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 526 KeyEvent.FLAG_SOFT_KEYBOARD)); 527 } 528 } 529 530 531 // The listener to capture global layout change event. 532 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 533 534 // The listener to capture scroll event. 535 private InnerScrollChangedListener mScrollChangedListener = null; 536 537 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 538 // the screen all-the-time. Good for profiling our drawing code 539 static private final boolean AUTO_REDRAW_HACK = false; 540 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 541 private boolean mAutoRedraw; 542 543 // Reference to the AlertDialog displayed by InvokeListBox. 544 // It's used to dismiss the dialog in destroy if not done before. 545 private AlertDialog mListBoxDialog = null; 546 547 static final String LOGTAG = "webview"; 548 549 private ZoomManager mZoomManager; 550 551 private final Rect mGLRectViewport = new Rect(); 552 private final Rect mViewRectViewport = new Rect(); 553 private final RectF mVisibleContentRect = new RectF(); 554 private boolean mGLViewportEmpty = false; 555 WebViewInputConnection mInputConnection = null; 556 private int mFieldPointer; 557 558 /** 559 * Transportation object for returning WebView across thread boundaries. 560 */ 561 public class WebViewTransport { 562 private WebView mWebview; 563 564 /** 565 * Set the WebView to the transportation object. 566 * @param webview The WebView to transport. 567 */ 568 public synchronized void setWebView(WebView webview) { 569 mWebview = webview; 570 } 571 572 /** 573 * Return the WebView object. 574 * @return WebView The transported WebView object. 575 */ 576 public synchronized WebView getWebView() { 577 return mWebview; 578 } 579 } 580 581 private static class OnTrimMemoryListener implements ComponentCallbacks2 { 582 private static OnTrimMemoryListener sInstance = null; 583 584 static void init(Context c) { 585 if (sInstance == null) { 586 sInstance = new OnTrimMemoryListener(c.getApplicationContext()); 587 } 588 } 589 590 private OnTrimMemoryListener(Context c) { 591 c.registerComponentCallbacks(this); 592 } 593 594 @Override 595 public void onConfigurationChanged(Configuration newConfig) { 596 // Ignore 597 } 598 599 @Override 600 public void onLowMemory() { 601 // Ignore 602 } 603 604 @Override 605 public void onTrimMemory(int level) { 606 if (DebugFlags.WEB_VIEW) { 607 Log.d("WebView", "onTrimMemory: " + level); 608 } 609 WebView.nativeOnTrimMemory(level); 610 } 611 612 } 613 614 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 615 private final CallbackProxy mCallbackProxy; 616 617 private final WebViewDatabase mDatabase; 618 619 // SSL certificate for the main top-level page (if secure) 620 private SslCertificate mCertificate; 621 622 // Native WebView pointer that is 0 until the native object has been 623 // created. 624 private int mNativeClass; 625 // This would be final but it needs to be set to null when the WebView is 626 // destroyed. 627 private WebViewCore mWebViewCore; 628 // Handler for dispatching UI messages. 629 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 630 private WebTextView mWebTextView; 631 // Used to ignore changes to webkit text that arrives to the UI side after 632 // more key events. 633 private int mTextGeneration; 634 635 /* package */ void incrementTextGeneration() { mTextGeneration++; } 636 637 // Used by WebViewCore to create child views. 638 /* package */ final ViewManager mViewManager; 639 640 // Used to display in full screen mode 641 PluginFullScreenHolder mFullScreenHolder; 642 643 /** 644 * Position of the last touch event in pixels. 645 * Use integer to prevent loss of dragging delta calculation accuracy; 646 * which was done in float and converted to integer, and resulted in gradual 647 * and compounding touch position and view dragging mismatch. 648 */ 649 private int mLastTouchX; 650 private int mLastTouchY; 651 private int mStartTouchX; 652 private int mStartTouchY; 653 private float mAverageAngle; 654 655 /** 656 * Time of the last touch event. 657 */ 658 private long mLastTouchTime; 659 660 /** 661 * Time of the last time sending touch event to WebViewCore 662 */ 663 private long mLastSentTouchTime; 664 665 /** 666 * The minimum elapsed time before sending another ACTION_MOVE event to 667 * WebViewCore. This really should be tuned for each type of the devices. 668 * For example in Google Map api test case, it takes Dream device at least 669 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 670 * triggering the layout and drawing the picture. While the same process 671 * takes 60+ms on the current high speed device. If we make 672 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 673 * to WebViewCore queue and the real layout and draw events will be pushed 674 * to further, which slows down the refresh rate. Choose 50 to favor the 675 * current high speed devices. For Dream like devices, 100 is a better 676 * choice. Maybe make this in the buildspec later. 677 * (Update 12/14/2010: changed to 0 since current device should be able to 678 * handle the raw events and Map team voted to have the raw events too. 679 */ 680 private static final int TOUCH_SENT_INTERVAL = 0; 681 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 682 683 /** 684 * Helper class to get velocity for fling 685 */ 686 VelocityTracker mVelocityTracker; 687 private int mMaximumFling; 688 private float mLastVelocity; 689 private float mLastVelX; 690 private float mLastVelY; 691 692 // The id of the native layer being scrolled. 693 private int mCurrentScrollingLayerId; 694 private Rect mScrollingLayerRect = new Rect(); 695 696 // only trigger accelerated fling if the new velocity is at least 697 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 698 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 699 700 /** 701 * Touch mode 702 */ 703 private int mTouchMode = TOUCH_DONE_MODE; 704 private static final int TOUCH_INIT_MODE = 1; 705 private static final int TOUCH_DRAG_START_MODE = 2; 706 private static final int TOUCH_DRAG_MODE = 3; 707 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 708 private static final int TOUCH_SHORTPRESS_MODE = 5; 709 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 710 private static final int TOUCH_DONE_MODE = 7; 711 private static final int TOUCH_PINCH_DRAG = 8; 712 private static final int TOUCH_DRAG_LAYER_MODE = 9; 713 714 // Whether to forward the touch events to WebCore 715 // Can only be set by WebKit via JNI. 716 private boolean mForwardTouchEvents = false; 717 718 // Whether to prevent default during touch. The initial value depends on 719 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 720 // for touch down. Otherwise UI will wait for the answer of the first 721 // confirmed move before taking over the control. 722 private static final int PREVENT_DEFAULT_NO = 0; 723 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 724 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 725 private static final int PREVENT_DEFAULT_YES = 3; 726 private static final int PREVENT_DEFAULT_IGNORE = 4; 727 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 728 729 // true when the touch movement exceeds the slop 730 private boolean mConfirmMove; 731 732 // if true, touch events will be first processed by WebCore, if prevent 733 // default is not set, the UI will continue handle them. 734 private boolean mDeferTouchProcess; 735 736 // to avoid interfering with the current touch events, track them 737 // separately. Currently no snapping or fling in the deferred process mode 738 private int mDeferTouchMode = TOUCH_DONE_MODE; 739 private float mLastDeferTouchX; 740 private float mLastDeferTouchY; 741 742 // To keep track of whether the current drag was initiated by a WebTextView, 743 // so that we know not to hide the cursor 744 boolean mDragFromTextInput; 745 746 // Whether or not to draw the cursor ring. 747 private boolean mDrawCursorRing = true; 748 749 // true if onPause has been called (and not onResume) 750 private boolean mIsPaused; 751 752 private HitTestResult mInitialHitTestResult; 753 private WebKitHitTest mFocusedNode; 754 755 /** 756 * Customizable constant 757 */ 758 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 759 private int mTouchSlopSquare; 760 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 761 private int mDoubleTapSlopSquare; 762 // pre-computed density adjusted navigation slop 763 private int mNavSlop; 764 // This should be ViewConfiguration.getTapTimeout() 765 // But system time out is 100ms, which is too short for the browser. 766 // In the browser, if it switches out of tap too soon, jump tap won't work. 767 // In addition, a double tap on a trackpad will always have a duration of 768 // 300ms, so this value must be at least that (otherwise we will timeout the 769 // first tap and convert it to a long press). 770 private static final int TAP_TIMEOUT = 300; 771 // This should be ViewConfiguration.getLongPressTimeout() 772 // But system time out is 500ms, which is too short for the browser. 773 // With a short timeout, it's difficult to treat trigger a short press. 774 private static final int LONG_PRESS_TIMEOUT = 1000; 775 // needed to avoid flinging after a pause of no movement 776 private static final int MIN_FLING_TIME = 250; 777 // draw unfiltered after drag is held without movement 778 private static final int MOTIONLESS_TIME = 100; 779 // The amount of content to overlap between two screens when going through 780 // pages with the space bar, in pixels. 781 private static final int PAGE_SCROLL_OVERLAP = 24; 782 783 /** 784 * These prevent calling requestLayout if either dimension is fixed. This 785 * depends on the layout parameters and the measure specs. 786 */ 787 boolean mWidthCanMeasure; 788 boolean mHeightCanMeasure; 789 790 // Remember the last dimensions we sent to the native side so we can avoid 791 // sending the same dimensions more than once. 792 int mLastWidthSent; 793 int mLastHeightSent; 794 // Since view height sent to webkit could be fixed to avoid relayout, this 795 // value records the last sent actual view height. 796 int mLastActualHeightSent; 797 798 private int mContentWidth; // cache of value from WebViewCore 799 private int mContentHeight; // cache of value from WebViewCore 800 801 // Need to have the separate control for horizontal and vertical scrollbar 802 // style than the View's single scrollbar style 803 private boolean mOverlayHorizontalScrollbar = true; 804 private boolean mOverlayVerticalScrollbar = false; 805 806 // our standard speed. this way small distances will be traversed in less 807 // time than large distances, but we cap the duration, so that very large 808 // distances won't take too long to get there. 809 private static final int STD_SPEED = 480; // pixels per second 810 // time for the longest scroll animation 811 private static final int MAX_DURATION = 750; // milliseconds 812 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 813 814 // Used by OverScrollGlow 815 OverScroller mScroller; 816 817 private boolean mInOverScrollMode = false; 818 private static Paint mOverScrollBackground; 819 private static Paint mOverScrollBorder; 820 821 private boolean mWrapContent; 822 private static final int MOTIONLESS_FALSE = 0; 823 private static final int MOTIONLESS_PENDING = 1; 824 private static final int MOTIONLESS_TRUE = 2; 825 private static final int MOTIONLESS_IGNORE = 3; 826 private int mHeldMotionless; 827 828 // An instance for injecting accessibility in WebViews with disabled 829 // JavaScript or ones for which no accessibility script exists 830 private AccessibilityInjector mAccessibilityInjector; 831 832 // flag indicating if accessibility script is injected so we 833 // know to handle Shift and arrows natively first 834 private boolean mAccessibilityScriptInjected; 835 836 private Drawable mSelectHandleLeft; 837 private Drawable mSelectHandleRight; 838 private Rect mSelectCursorBase = new Rect(); 839 private int mSelectCursorBaseLayerId; 840 private Rect mSelectCursorExtent = new Rect(); 841 private int mSelectCursorExtentLayerId; 842 private Rect mSelectDraggingCursor; 843 private Point mSelectDraggingOffset = new Point(); 844 static final int HANDLE_ID_START = 0; 845 static final int HANDLE_ID_END = 1; 846 static final int HANDLE_ID_BASE = 2; 847 static final int HANDLE_ID_EXTENT = 3; 848 849 static boolean sDisableNavcache = false; 850 static boolean sEnableWebTextView = false; 851 // the color used to highlight the touch rectangles 852 static final int HIGHLIGHT_COLOR = 0x6633b5e5; 853 // the region indicating where the user touched on the screen 854 private Region mTouchHighlightRegion = new Region(); 855 // the paint for the touch highlight 856 private Paint mTouchHightlightPaint = new Paint(); 857 // debug only 858 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 859 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 860 private Paint mTouchCrossHairColor; 861 private int mTouchHighlightX; 862 private int mTouchHighlightY; 863 private long mTouchHighlightRequested; 864 865 // Basically this proxy is used to tell the Video to update layer tree at 866 // SetBaseLayer time and to pause when WebView paused. 867 private HTML5VideoViewProxy mHTML5VideoViewProxy; 868 869 // If we are using a set picture, don't send view updates to webkit 870 private boolean mBlockWebkitViewMessages = false; 871 872 // cached value used to determine if we need to switch drawing models 873 private boolean mHardwareAccelSkia = false; 874 875 /* 876 * Private message ids 877 */ 878 private static final int REMEMBER_PASSWORD = 1; 879 private static final int NEVER_REMEMBER_PASSWORD = 2; 880 private static final int SWITCH_TO_SHORTPRESS = 3; 881 private static final int SWITCH_TO_LONGPRESS = 4; 882 private static final int RELEASE_SINGLE_TAP = 5; 883 private static final int REQUEST_FORM_DATA = 6; 884 private static final int DRAG_HELD_MOTIONLESS = 8; 885 private static final int AWAKEN_SCROLL_BARS = 9; 886 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 887 private static final int SCROLL_SELECT_TEXT = 11; 888 889 890 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 891 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 892 893 /* 894 * Package message ids 895 */ 896 static final int SCROLL_TO_MSG_ID = 101; 897 static final int NEW_PICTURE_MSG_ID = 105; 898 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 899 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 900 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 901 static final int UPDATE_ZOOM_RANGE = 109; 902 static final int UNHANDLED_NAV_KEY = 110; 903 static final int CLEAR_TEXT_ENTRY = 111; 904 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 905 static final int SHOW_RECT_MSG_ID = 113; 906 static final int LONG_PRESS_CENTER = 114; 907 static final int PREVENT_TOUCH_ID = 115; 908 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 909 // obj=Rect in doc coordinates 910 static final int INVAL_RECT_MSG_ID = 117; 911 static final int REQUEST_KEYBOARD = 118; 912 static final int DO_MOTION_UP = 119; 913 static final int SHOW_FULLSCREEN = 120; 914 static final int HIDE_FULLSCREEN = 121; 915 static final int DOM_FOCUS_CHANGED = 122; 916 static final int REPLACE_BASE_CONTENT = 123; 917 static final int FORM_DID_BLUR = 124; 918 static final int RETURN_LABEL = 125; 919 static final int UPDATE_MATCH_COUNT = 126; 920 static final int CENTER_FIT_RECT = 127; 921 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 922 static final int SET_SCROLLBAR_MODES = 129; 923 static final int SELECTION_STRING_CHANGED = 130; 924 static final int HIT_TEST_RESULT = 131; 925 static final int SAVE_WEBARCHIVE_FINISHED = 132; 926 927 static final int SET_AUTOFILLABLE = 133; 928 static final int AUTOFILL_COMPLETE = 134; 929 930 static final int SELECT_AT = 135; 931 static final int SCREEN_ON = 136; 932 static final int ENTER_FULLSCREEN_VIDEO = 137; 933 static final int UPDATE_SELECTION = 138; 934 static final int UPDATE_ZOOM_DENSITY = 139; 935 static final int EXIT_FULLSCREEN_VIDEO = 140; 936 937 static final int COPY_TO_CLIPBOARD = 141; 938 static final int INIT_EDIT_FIELD = 142; 939 static final int REPLACE_TEXT = 143; 940 941 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 942 private static final int LAST_PACKAGE_MSG_ID = HIT_TEST_RESULT; 943 944 static final String[] HandlerPrivateDebugString = { 945 "REMEMBER_PASSWORD", // = 1; 946 "NEVER_REMEMBER_PASSWORD", // = 2; 947 "SWITCH_TO_SHORTPRESS", // = 3; 948 "SWITCH_TO_LONGPRESS", // = 4; 949 "RELEASE_SINGLE_TAP", // = 5; 950 "REQUEST_FORM_DATA", // = 6; 951 "RESUME_WEBCORE_PRIORITY", // = 7; 952 "DRAG_HELD_MOTIONLESS", // = 8; 953 "AWAKEN_SCROLL_BARS", // = 9; 954 "PREVENT_DEFAULT_TIMEOUT", // = 10; 955 "SCROLL_SELECT_TEXT" // = 11; 956 }; 957 958 static final String[] HandlerPackageDebugString = { 959 "SCROLL_TO_MSG_ID", // = 101; 960 "102", // = 102; 961 "103", // = 103; 962 "104", // = 104; 963 "NEW_PICTURE_MSG_ID", // = 105; 964 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 965 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 966 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 967 "UPDATE_ZOOM_RANGE", // = 109; 968 "UNHANDLED_NAV_KEY", // = 110; 969 "CLEAR_TEXT_ENTRY", // = 111; 970 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 971 "SHOW_RECT_MSG_ID", // = 113; 972 "LONG_PRESS_CENTER", // = 114; 973 "PREVENT_TOUCH_ID", // = 115; 974 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 975 "INVAL_RECT_MSG_ID", // = 117; 976 "REQUEST_KEYBOARD", // = 118; 977 "DO_MOTION_UP", // = 119; 978 "SHOW_FULLSCREEN", // = 120; 979 "HIDE_FULLSCREEN", // = 121; 980 "DOM_FOCUS_CHANGED", // = 122; 981 "REPLACE_BASE_CONTENT", // = 123; 982 "FORM_DID_BLUR", // = 124; 983 "RETURN_LABEL", // = 125; 984 "UPDATE_MATCH_COUNT", // = 126; 985 "CENTER_FIT_RECT", // = 127; 986 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 987 "SET_SCROLLBAR_MODES", // = 129; 988 "SELECTION_STRING_CHANGED", // = 130; 989 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 990 "SAVE_WEBARCHIVE_FINISHED", // = 132; 991 "SET_AUTOFILLABLE", // = 133; 992 "AUTOFILL_COMPLETE", // = 134; 993 "SELECT_AT", // = 135; 994 "SCREEN_ON", // = 136; 995 "ENTER_FULLSCREEN_VIDEO", // = 137; 996 "UPDATE_SELECTION", // = 138; 997 "UPDATE_ZOOM_DENSITY" // = 139; 998 }; 999 1000 // If the site doesn't use the viewport meta tag to specify the viewport, 1001 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 1002 static final int DEFAULT_VIEWPORT_WIDTH = 980; 1003 1004 // normally we try to fit the content to the minimum preferred width 1005 // calculated by the Webkit. To avoid the bad behavior when some site's 1006 // minimum preferred width keeps growing when changing the viewport width or 1007 // the minimum preferred width is huge, an upper limit is needed. 1008 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 1009 1010 // initial scale in percent. 0 means using default. 1011 private int mInitialScaleInPercent = 0; 1012 1013 // Whether or not a scroll event should be sent to webkit. This is only set 1014 // to false when restoring the scroll position. 1015 private boolean mSendScrollEvent = true; 1016 1017 private int mSnapScrollMode = SNAP_NONE; 1018 private static final int SNAP_NONE = 0; 1019 private static final int SNAP_LOCK = 1; // not a separate state 1020 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 1021 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 1022 private boolean mSnapPositive; 1023 1024 // keep these in sync with their counterparts in WebView.cpp 1025 private static final int DRAW_EXTRAS_NONE = 0; 1026 private static final int DRAW_EXTRAS_SELECTION = 1; 1027 private static final int DRAW_EXTRAS_CURSOR_RING = 2; 1028 1029 // keep this in sync with WebCore:ScrollbarMode in WebKit 1030 private static final int SCROLLBAR_AUTO = 0; 1031 private static final int SCROLLBAR_ALWAYSOFF = 1; 1032 // as we auto fade scrollbar, this is ignored. 1033 private static final int SCROLLBAR_ALWAYSON = 2; 1034 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 1035 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 1036 1037 // constants for determining script injection strategy 1038 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 1039 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 1040 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 1041 1042 // the alias via which accessibility JavaScript interface is exposed 1043 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 1044 1045 // Template for JavaScript that injects a screen-reader. 1046 private static final String ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE = 1047 "javascript:(function() {" + 1048 " var chooser = document.createElement('script');" + 1049 " chooser.type = 'text/javascript';" + 1050 " chooser.src = '%1s';" + 1051 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 1052 " })();"; 1053 1054 // Regular expression that matches the "axs" URL parameter. 1055 // The value of 0 means the accessibility script is opted out 1056 // The value of 1 means the accessibility script is already injected 1057 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 1058 1059 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 1060 private TextToSpeech mTextToSpeech; 1061 1062 // variable to cache the above pattern in case accessibility is enabled. 1063 private Pattern mMatchAxsUrlParameterPattern; 1064 1065 /** 1066 * Max distance to overscroll by in pixels. 1067 * This how far content can be pulled beyond its normal bounds by the user. 1068 */ 1069 private int mOverscrollDistance; 1070 1071 /** 1072 * Max distance to overfling by in pixels. 1073 * This is how far flinged content can move beyond the end of its normal bounds. 1074 */ 1075 private int mOverflingDistance; 1076 1077 private OverScrollGlow mOverScrollGlow; 1078 1079 // Used to match key downs and key ups 1080 private Vector<Integer> mKeysPressed; 1081 1082 /* package */ static boolean mLogEvent = true; 1083 1084 // for event log 1085 private long mLastTouchUpTime = 0; 1086 1087 private WebViewCore.AutoFillData mAutoFillData; 1088 1089 private static boolean sNotificationsEnabled = true; 1090 1091 /** 1092 * URI scheme for telephone number 1093 */ 1094 public static final String SCHEME_TEL = "tel:"; 1095 /** 1096 * URI scheme for email address 1097 */ 1098 public static final String SCHEME_MAILTO = "mailto:"; 1099 /** 1100 * URI scheme for map address 1101 */ 1102 public static final String SCHEME_GEO = "geo:0,0?q="; 1103 1104 private int mBackgroundColor = Color.WHITE; 1105 1106 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 1107 private int mAutoScrollX = 0; 1108 private int mAutoScrollY = 0; 1109 private int mMinAutoScrollX = 0; 1110 private int mMaxAutoScrollX = 0; 1111 private int mMinAutoScrollY = 0; 1112 private int mMaxAutoScrollY = 0; 1113 private Rect mScrollingLayerBounds = new Rect(); 1114 private boolean mSentAutoScrollMessage = false; 1115 1116 // used for serializing asynchronously handled touch events. 1117 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 1118 1119 // Used to track whether picture updating was paused due to a window focus change. 1120 private boolean mPictureUpdatePausedForFocusChange = false; 1121 1122 // Used to notify listeners of a new picture. 1123 private PictureListener mPictureListener; 1124 /** 1125 * Interface to listen for new pictures as they change. 1126 * @deprecated This interface is now obsolete. 1127 */ 1128 @Deprecated 1129 public interface PictureListener { 1130 /** 1131 * Notify the listener that the picture has changed. 1132 * @param view The WebView that owns the picture. 1133 * @param picture The new picture. 1134 * @deprecated Due to internal changes, the picture does not include 1135 * composited layers such as fixed position elements or scrollable divs. 1136 * While the PictureListener API can still be used to detect changes in 1137 * the WebView content, you are advised against its usage until a replacement 1138 * is provided in a future Android release 1139 */ 1140 @Deprecated 1141 public void onNewPicture(WebView view, Picture picture); 1142 } 1143 1144 public static class HitTestResult { 1145 /** 1146 * Default HitTestResult, where the target is unknown 1147 */ 1148 public static final int UNKNOWN_TYPE = 0; 1149 /** 1150 * @deprecated This type is no longer used. 1151 */ 1152 @Deprecated 1153 public static final int ANCHOR_TYPE = 1; 1154 /** 1155 * HitTestResult for hitting a phone number 1156 */ 1157 public static final int PHONE_TYPE = 2; 1158 /** 1159 * HitTestResult for hitting a map address 1160 */ 1161 public static final int GEO_TYPE = 3; 1162 /** 1163 * HitTestResult for hitting an email address 1164 */ 1165 public static final int EMAIL_TYPE = 4; 1166 /** 1167 * HitTestResult for hitting an HTML::img tag 1168 */ 1169 public static final int IMAGE_TYPE = 5; 1170 /** 1171 * @deprecated This type is no longer used. 1172 */ 1173 @Deprecated 1174 public static final int IMAGE_ANCHOR_TYPE = 6; 1175 /** 1176 * HitTestResult for hitting a HTML::a tag with src=http 1177 */ 1178 public static final int SRC_ANCHOR_TYPE = 7; 1179 /** 1180 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 1181 */ 1182 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 1183 /** 1184 * HitTestResult for hitting an edit text area 1185 */ 1186 public static final int EDIT_TEXT_TYPE = 9; 1187 1188 private int mType; 1189 private String mExtra; 1190 1191 HitTestResult() { 1192 mType = UNKNOWN_TYPE; 1193 } 1194 1195 private void setType(int type) { 1196 mType = type; 1197 } 1198 1199 private void setExtra(String extra) { 1200 mExtra = extra; 1201 } 1202 1203 /** 1204 * Gets the type of the hit test result. 1205 * @return See the XXX_TYPE constants defined in this class. 1206 */ 1207 public int getType() { 1208 return mType; 1209 } 1210 1211 /** 1212 * Gets additional type-dependant information about the result, see 1213 * {@link WebView#getHitTestResult()} for details. 1214 * @return may either be null or contain extra information about this result. 1215 */ 1216 public String getExtra() { 1217 return mExtra; 1218 } 1219 } 1220 1221 /** 1222 * Refer to {@link WebView#requestFocusNodeHref(Message)} for more information 1223 */ 1224 static class FocusNodeHref { 1225 static final String TITLE = "title"; 1226 static final String URL = "url"; 1227 static final String SRC = "src"; 1228 } 1229 1230 /** 1231 * Construct a new WebView with a Context object. 1232 * @param context A Context object used to access application assets. 1233 */ 1234 public WebView(Context context) { 1235 this(context, null); 1236 } 1237 1238 /** 1239 * Construct a new WebView with layout parameters. 1240 * @param context A Context object used to access application assets. 1241 * @param attrs An AttributeSet passed to our parent. 1242 */ 1243 public WebView(Context context, AttributeSet attrs) { 1244 this(context, attrs, com.android.internal.R.attr.webViewStyle); 1245 } 1246 1247 /** 1248 * Construct a new WebView with layout parameters and a default style. 1249 * @param context A Context object used to access application assets. 1250 * @param attrs An AttributeSet passed to our parent. 1251 * @param defStyle The default style resource ID. 1252 */ 1253 public WebView(Context context, AttributeSet attrs, int defStyle) { 1254 this(context, attrs, defStyle, false); 1255 } 1256 1257 /** 1258 * Construct a new WebView with layout parameters and a default style. 1259 * @param context A Context object used to access application assets. 1260 * @param attrs An AttributeSet passed to our parent. 1261 * @param defStyle The default style resource ID. 1262 * @param privateBrowsing If true the web view will be initialized in private mode. 1263 */ 1264 public WebView(Context context, AttributeSet attrs, int defStyle, 1265 boolean privateBrowsing) { 1266 this(context, attrs, defStyle, null, privateBrowsing); 1267 } 1268 1269 /** 1270 * Construct a new WebView with layout parameters, a default style and a set 1271 * of custom Javscript interfaces to be added to the WebView at initialization 1272 * time. This guarantees that these interfaces will be available when the JS 1273 * context is initialized. 1274 * @param context A Context object used to access application assets. 1275 * @param attrs An AttributeSet passed to our parent. 1276 * @param defStyle The default style resource ID. 1277 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1278 * object implementing those interfaces, as values. 1279 * @param privateBrowsing If true the web view will be initialized in private mode. 1280 * @hide This is an implementation detail. 1281 */ 1282 protected WebView(Context context, AttributeSet attrs, int defStyle, 1283 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1284 super(context, attrs, defStyle); 1285 checkThread(); 1286 1287 if (context == null) { 1288 throw new IllegalArgumentException("Invalid context argument"); 1289 } 1290 1291 // Used by the chrome stack to find application paths 1292 JniUtil.setContext(context); 1293 1294 mCallbackProxy = new CallbackProxy(context, this); 1295 mViewManager = new ViewManager(this); 1296 L10nUtils.setApplicationContext(context.getApplicationContext()); 1297 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1298 mDatabase = WebViewDatabase.getInstance(context); 1299 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1300 mZoomManager = new ZoomManager(this, mCallbackProxy); 1301 1302 /* The init method must follow the creation of certain member variables, 1303 * such as the mZoomManager. 1304 */ 1305 init(); 1306 setupPackageListener(context); 1307 setupProxyListener(context); 1308 setupTrustStorageListener(context); 1309 updateMultiTouchSupport(context); 1310 1311 if (privateBrowsing) { 1312 startPrivateBrowsing(); 1313 } 1314 1315 mAutoFillData = new WebViewCore.AutoFillData(); 1316 } 1317 1318 private static class TrustStorageListener extends BroadcastReceiver { 1319 @Override 1320 public void onReceive(Context context, Intent intent) { 1321 if (intent.getAction().equals(KeyChain.ACTION_STORAGE_CHANGED)) { 1322 handleCertTrustChanged(); 1323 } 1324 } 1325 } 1326 private static TrustStorageListener sTrustStorageListener; 1327 1328 /** 1329 * Handles update to the trust storage. 1330 */ 1331 private static void handleCertTrustChanged() { 1332 // send a message for indicating trust storage change 1333 WebViewCore.sendStaticMessage(EventHub.TRUST_STORAGE_UPDATED, null); 1334 } 1335 1336 /* 1337 * @param context This method expects this to be a valid context. 1338 */ 1339 private static void setupTrustStorageListener(Context context) { 1340 if (sTrustStorageListener != null ) { 1341 return; 1342 } 1343 IntentFilter filter = new IntentFilter(); 1344 filter.addAction(KeyChain.ACTION_STORAGE_CHANGED); 1345 sTrustStorageListener = new TrustStorageListener(); 1346 Intent current = 1347 context.getApplicationContext().registerReceiver(sTrustStorageListener, filter); 1348 if (current != null) { 1349 handleCertTrustChanged(); 1350 } 1351 } 1352 1353 private static class ProxyReceiver extends BroadcastReceiver { 1354 @Override 1355 public void onReceive(Context context, Intent intent) { 1356 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1357 handleProxyBroadcast(intent); 1358 } 1359 } 1360 } 1361 1362 /* 1363 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1364 */ 1365 private static ProxyReceiver sProxyReceiver; 1366 1367 /* 1368 * @param context This method expects this to be a valid context 1369 */ 1370 private static synchronized void setupProxyListener(Context context) { 1371 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1372 return; 1373 } 1374 IntentFilter filter = new IntentFilter(); 1375 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1376 sProxyReceiver = new ProxyReceiver(); 1377 Intent currentProxy = context.getApplicationContext().registerReceiver( 1378 sProxyReceiver, filter); 1379 if (currentProxy != null) { 1380 handleProxyBroadcast(currentProxy); 1381 } 1382 } 1383 1384 /* 1385 * @param context This method expects this to be a valid context 1386 */ 1387 private static synchronized void disableProxyListener(Context context) { 1388 if (sProxyReceiver == null) 1389 return; 1390 1391 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1392 sProxyReceiver = null; 1393 } 1394 1395 private static void handleProxyBroadcast(Intent intent) { 1396 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1397 if (proxyProperties == null || proxyProperties.getHost() == null) { 1398 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1399 return; 1400 } 1401 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1402 } 1403 1404 /* 1405 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1406 * or ACTION_PACKAGE_REMOVED. 1407 */ 1408 private static boolean sPackageInstallationReceiverAdded = false; 1409 1410 /* 1411 * A set of Google packages we monitor for the 1412 * navigator.isApplicationInstalled() API. Add additional packages as 1413 * needed. 1414 */ 1415 private static Set<String> sGoogleApps; 1416 static { 1417 sGoogleApps = new HashSet<String>(); 1418 sGoogleApps.add("com.google.android.youtube"); 1419 } 1420 1421 private static class PackageListener extends BroadcastReceiver { 1422 @Override 1423 public void onReceive(Context context, Intent intent) { 1424 final String action = intent.getAction(); 1425 final String packageName = intent.getData().getSchemeSpecificPart(); 1426 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1427 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1428 // if it is replacing, refreshPlugins() when adding 1429 return; 1430 } 1431 1432 if (sGoogleApps.contains(packageName)) { 1433 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1434 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1435 } else { 1436 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1437 } 1438 } 1439 1440 PluginManager pm = PluginManager.getInstance(context); 1441 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1442 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1443 } 1444 } 1445 } 1446 1447 private void setupPackageListener(Context context) { 1448 1449 /* 1450 * we must synchronize the instance check and the creation of the 1451 * receiver to ensure that only ONE receiver exists for all WebView 1452 * instances. 1453 */ 1454 synchronized (WebView.class) { 1455 1456 // if the receiver already exists then we do not need to register it 1457 // again 1458 if (sPackageInstallationReceiverAdded) { 1459 return; 1460 } 1461 1462 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1463 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1464 filter.addDataScheme("package"); 1465 BroadcastReceiver packageListener = new PackageListener(); 1466 context.getApplicationContext().registerReceiver(packageListener, filter); 1467 sPackageInstallationReceiverAdded = true; 1468 } 1469 1470 // check if any of the monitored apps are already installed 1471 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1472 1473 @Override 1474 protected Set<String> doInBackground(Void... unused) { 1475 Set<String> installedPackages = new HashSet<String>(); 1476 PackageManager pm = mContext.getPackageManager(); 1477 for (String name : sGoogleApps) { 1478 try { 1479 pm.getPackageInfo(name, 1480 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1481 installedPackages.add(name); 1482 } catch (PackageManager.NameNotFoundException e) { 1483 // package not found 1484 } 1485 } 1486 return installedPackages; 1487 } 1488 1489 // Executes on the UI thread 1490 @Override 1491 protected void onPostExecute(Set<String> installedPackages) { 1492 if (mWebViewCore != null) { 1493 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1494 } 1495 } 1496 }; 1497 task.execute(); 1498 } 1499 1500 void updateMultiTouchSupport(Context context) { 1501 mZoomManager.updateMultiTouchSupport(context); 1502 } 1503 1504 private void init() { 1505 OnTrimMemoryListener.init(getContext()); 1506 sDisableNavcache = nativeDisableNavcache(); 1507 setWillNotDraw(false); 1508 setFocusable(true); 1509 setFocusableInTouchMode(true); 1510 setClickable(true); 1511 setLongClickable(true); 1512 1513 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1514 int slop = configuration.getScaledTouchSlop(); 1515 mTouchSlopSquare = slop * slop; 1516 slop = configuration.getScaledDoubleTapSlop(); 1517 mDoubleTapSlopSquare = slop * slop; 1518 final float density = getContext().getResources().getDisplayMetrics().density; 1519 // use one line height, 16 based on our current default font, for how 1520 // far we allow a touch be away from the edge of a link 1521 mNavSlop = (int) (16 * density); 1522 mZoomManager.init(density); 1523 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1524 1525 // Compute the inverse of the density squared. 1526 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1527 1528 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1529 mOverflingDistance = configuration.getScaledOverflingDistance(); 1530 1531 setScrollBarStyle(super.getScrollBarStyle()); 1532 // Initially use a size of two, since the user is likely to only hold 1533 // down two keys at a time (shift + another key) 1534 mKeysPressed = new Vector<Integer>(2); 1535 mHTML5VideoViewProxy = null ; 1536 } 1537 1538 @Override 1539 public boolean shouldDelayChildPressedState() { 1540 return true; 1541 } 1542 1543 /** 1544 * Adds accessibility APIs to JavaScript. 1545 * 1546 * Note: This method is responsible to performing the necessary 1547 * check if the accessibility APIs should be exposed. 1548 */ 1549 private void addAccessibilityApisToJavaScript() { 1550 if (AccessibilityManager.getInstance(mContext).isEnabled() 1551 && getSettings().getJavaScriptEnabled()) { 1552 // exposing the TTS for now ... 1553 final Context ctx = getContext(); 1554 if (ctx != null) { 1555 final String packageName = ctx.getPackageName(); 1556 if (packageName != null) { 1557 mTextToSpeech = new TextToSpeech(getContext(), null, null, 1558 packageName + ".**webview**", true); 1559 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1560 } 1561 } 1562 } 1563 } 1564 1565 /** 1566 * Removes accessibility APIs from JavaScript. 1567 */ 1568 private void removeAccessibilityApisFromJavaScript() { 1569 // exposing the TTS for now ... 1570 if (mTextToSpeech != null) { 1571 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1572 mTextToSpeech.shutdown(); 1573 mTextToSpeech = null; 1574 } 1575 } 1576 1577 @Override 1578 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 1579 super.onInitializeAccessibilityNodeInfo(info); 1580 info.setScrollable(isScrollableForAccessibility()); 1581 } 1582 1583 @Override 1584 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 1585 super.onInitializeAccessibilityEvent(event); 1586 event.setScrollable(isScrollableForAccessibility()); 1587 event.setScrollX(mScrollX); 1588 event.setScrollY(mScrollY); 1589 final int convertedContentWidth = contentToViewX(getContentWidth()); 1590 final int adjustedViewWidth = getWidth() - mPaddingLeft - mPaddingRight; 1591 event.setMaxScrollX(Math.max(convertedContentWidth - adjustedViewWidth, 0)); 1592 final int convertedContentHeight = contentToViewY(getContentHeight()); 1593 final int adjustedViewHeight = getHeight() - mPaddingTop - mPaddingBottom; 1594 event.setMaxScrollY(Math.max(convertedContentHeight - adjustedViewHeight, 0)); 1595 } 1596 1597 private boolean isScrollableForAccessibility() { 1598 return (contentToViewX(getContentWidth()) > getWidth() - mPaddingLeft - mPaddingRight 1599 || contentToViewY(getContentHeight()) > getHeight() - mPaddingTop - mPaddingBottom); 1600 } 1601 1602 @Override 1603 public void setOverScrollMode(int mode) { 1604 super.setOverScrollMode(mode); 1605 if (mode != OVER_SCROLL_NEVER) { 1606 if (mOverScrollGlow == null) { 1607 mOverScrollGlow = new OverScrollGlow(this); 1608 } 1609 } else { 1610 mOverScrollGlow = null; 1611 } 1612 } 1613 1614 /* package */ void adjustDefaultZoomDensity(int zoomDensity) { 1615 final float density = mContext.getResources().getDisplayMetrics().density 1616 * 100 / zoomDensity; 1617 updateDefaultZoomDensity(density); 1618 } 1619 1620 /* package */ void updateDefaultZoomDensity(float density) { 1621 mNavSlop = (int) (16 * density); 1622 mZoomManager.updateDefaultZoomDensity(density); 1623 } 1624 1625 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1626 String password, final Message resumeMsg) { 1627 boolean rVal = false; 1628 if (resumeMsg == null) { 1629 // null resumeMsg implies saving password silently 1630 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1631 } else { 1632 final Message remember = mPrivateHandler.obtainMessage( 1633 REMEMBER_PASSWORD); 1634 remember.getData().putString("host", schemePlusHost); 1635 remember.getData().putString("username", username); 1636 remember.getData().putString("password", password); 1637 remember.obj = resumeMsg; 1638 1639 final Message neverRemember = mPrivateHandler.obtainMessage( 1640 NEVER_REMEMBER_PASSWORD); 1641 neverRemember.getData().putString("host", schemePlusHost); 1642 neverRemember.getData().putString("username", username); 1643 neverRemember.getData().putString("password", password); 1644 neverRemember.obj = resumeMsg; 1645 1646 new AlertDialog.Builder(getContext()) 1647 .setTitle(com.android.internal.R.string.save_password_label) 1648 .setMessage(com.android.internal.R.string.save_password_message) 1649 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1650 new DialogInterface.OnClickListener() { 1651 @Override 1652 public void onClick(DialogInterface dialog, int which) { 1653 resumeMsg.sendToTarget(); 1654 } 1655 }) 1656 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1657 new DialogInterface.OnClickListener() { 1658 @Override 1659 public void onClick(DialogInterface dialog, int which) { 1660 remember.sendToTarget(); 1661 } 1662 }) 1663 .setNegativeButton(com.android.internal.R.string.save_password_never, 1664 new DialogInterface.OnClickListener() { 1665 @Override 1666 public void onClick(DialogInterface dialog, int which) { 1667 neverRemember.sendToTarget(); 1668 } 1669 }) 1670 .setOnCancelListener(new OnCancelListener() { 1671 @Override 1672 public void onCancel(DialogInterface dialog) { 1673 resumeMsg.sendToTarget(); 1674 } 1675 }).show(); 1676 // Return true so that WebViewCore will pause while the dialog is 1677 // up. 1678 rVal = true; 1679 } 1680 return rVal; 1681 } 1682 1683 @Override 1684 public void setScrollBarStyle(int style) { 1685 if (style == View.SCROLLBARS_INSIDE_INSET 1686 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1687 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1688 } else { 1689 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1690 } 1691 super.setScrollBarStyle(style); 1692 } 1693 1694 /** 1695 * Specify whether the horizontal scrollbar has overlay style. 1696 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1697 */ 1698 public void setHorizontalScrollbarOverlay(boolean overlay) { 1699 checkThread(); 1700 mOverlayHorizontalScrollbar = overlay; 1701 } 1702 1703 /** 1704 * Specify whether the vertical scrollbar has overlay style. 1705 * @param overlay TRUE if vertical scrollbar should have overlay style. 1706 */ 1707 public void setVerticalScrollbarOverlay(boolean overlay) { 1708 checkThread(); 1709 mOverlayVerticalScrollbar = overlay; 1710 } 1711 1712 /** 1713 * Return whether horizontal scrollbar has overlay style 1714 * @return TRUE if horizontal scrollbar has overlay style. 1715 */ 1716 public boolean overlayHorizontalScrollbar() { 1717 checkThread(); 1718 return mOverlayHorizontalScrollbar; 1719 } 1720 1721 /** 1722 * Return whether vertical scrollbar has overlay style 1723 * @return TRUE if vertical scrollbar has overlay style. 1724 */ 1725 public boolean overlayVerticalScrollbar() { 1726 checkThread(); 1727 return mOverlayVerticalScrollbar; 1728 } 1729 1730 /* 1731 * Return the width of the view where the content of WebView should render 1732 * to. 1733 * Note: this can be called from WebCoreThread. 1734 */ 1735 /* package */ int getViewWidth() { 1736 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1737 return getWidth(); 1738 } else { 1739 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1740 } 1741 } 1742 1743 /** 1744 * Returns the height (in pixels) of the embedded title bar (if any). Does not care about 1745 * scrolling 1746 * @hide 1747 */ 1748 protected int getTitleHeight() { 1749 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1750 } 1751 1752 /** 1753 * Return the visible height (in pixels) of the embedded title bar (if any). 1754 * 1755 * @return This method is obsolete and always returns 0. 1756 * @deprecated This method is now obsolete. 1757 */ 1758 @Deprecated 1759 public int getVisibleTitleHeight() { 1760 // Actually, this method returns the height of the embedded title bar if one is set via the 1761 // hidden setEmbeddedTitleBar method. 1762 checkThread(); 1763 return getVisibleTitleHeightImpl(); 1764 } 1765 1766 private int getVisibleTitleHeightImpl() { 1767 // need to restrict mScrollY due to over scroll 1768 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 1769 getOverlappingActionModeHeight()); 1770 } 1771 1772 private int mCachedOverlappingActionModeHeight = -1; 1773 1774 private int getOverlappingActionModeHeight() { 1775 if (mFindCallback == null) { 1776 return 0; 1777 } 1778 if (mCachedOverlappingActionModeHeight < 0) { 1779 getGlobalVisibleRect(mGlobalVisibleRect, mGlobalVisibleOffset); 1780 mCachedOverlappingActionModeHeight = Math.max(0, 1781 mFindCallback.getActionModeGlobalBottom() - mGlobalVisibleRect.top); 1782 } 1783 return mCachedOverlappingActionModeHeight; 1784 } 1785 1786 /* 1787 * Return the height of the view where the content of WebView should render 1788 * to. Note that this excludes mTitleBar, if there is one. 1789 * Note: this can be called from WebCoreThread. 1790 */ 1791 /* package */ int getViewHeight() { 1792 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1793 } 1794 1795 int getViewHeightWithTitle() { 1796 int height = getHeight(); 1797 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1798 height -= getHorizontalScrollbarHeight(); 1799 } 1800 return height; 1801 } 1802 1803 /** 1804 * @return The SSL certificate for the main top-level page or null if 1805 * there is no certificate (the site is not secure). 1806 */ 1807 public SslCertificate getCertificate() { 1808 checkThread(); 1809 return mCertificate; 1810 } 1811 1812 /** 1813 * Sets the SSL certificate for the main top-level page. 1814 */ 1815 public void setCertificate(SslCertificate certificate) { 1816 checkThread(); 1817 if (DebugFlags.WEB_VIEW) { 1818 Log.v(LOGTAG, "setCertificate=" + certificate); 1819 } 1820 // here, the certificate can be null (if the site is not secure) 1821 mCertificate = certificate; 1822 } 1823 1824 //------------------------------------------------------------------------- 1825 // Methods called by activity 1826 //------------------------------------------------------------------------- 1827 1828 /** 1829 * Save the username and password for a particular host in the WebView's 1830 * internal database. 1831 * @param host The host that required the credentials. 1832 * @param username The username for the given host. 1833 * @param password The password for the given host. 1834 */ 1835 public void savePassword(String host, String username, String password) { 1836 checkThread(); 1837 mDatabase.setUsernamePassword(host, username, password); 1838 } 1839 1840 /** 1841 * Set the HTTP authentication credentials for a given host and realm. 1842 * 1843 * @param host The host for the credentials. 1844 * @param realm The realm for the credentials. 1845 * @param username The username for the password. If it is null, it means 1846 * password can't be saved. 1847 * @param password The password 1848 */ 1849 public void setHttpAuthUsernamePassword(String host, String realm, 1850 String username, String password) { 1851 checkThread(); 1852 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1853 } 1854 1855 /** 1856 * Retrieve the HTTP authentication username and password for a given 1857 * host & realm pair 1858 * 1859 * @param host The host for which the credentials apply. 1860 * @param realm The realm for which the credentials apply. 1861 * @return String[] if found, String[0] is username, which can be null and 1862 * String[1] is password. Return null if it can't find anything. 1863 */ 1864 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1865 checkThread(); 1866 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1867 } 1868 1869 /** 1870 * Remove Find or Select ActionModes, if active. 1871 */ 1872 private void clearActionModes() { 1873 if (mSelectCallback != null) { 1874 mSelectCallback.finish(); 1875 } 1876 if (mFindCallback != null) { 1877 mFindCallback.finish(); 1878 } 1879 } 1880 1881 /** 1882 * Called to clear state when moving from one page to another, or changing 1883 * in some other way that makes elements associated with the current page 1884 * (such as WebTextView or ActionModes) no longer relevant. 1885 */ 1886 private void clearHelpers() { 1887 clearTextEntry(); 1888 clearActionModes(); 1889 dismissFullScreenMode(); 1890 cancelSelectDialog(); 1891 } 1892 1893 private void cancelSelectDialog() { 1894 if (mListBoxDialog != null) { 1895 mListBoxDialog.cancel(); 1896 mListBoxDialog = null; 1897 } 1898 } 1899 1900 /** 1901 * Destroy the internal state of the WebView. This method should be called 1902 * after the WebView has been removed from the view system. No other 1903 * methods may be called on a WebView after destroy. 1904 */ 1905 public void destroy() { 1906 checkThread(); 1907 destroyImpl(); 1908 } 1909 1910 private void destroyImpl() { 1911 clearHelpers(); 1912 if (mListBoxDialog != null) { 1913 mListBoxDialog.dismiss(); 1914 mListBoxDialog = null; 1915 } 1916 // remove so that it doesn't cause events 1917 if (mWebTextView != null) { 1918 mWebTextView.remove(); 1919 mWebTextView = null; 1920 } 1921 if (mNativeClass != 0) nativeStopGL(); 1922 if (mWebViewCore != null) { 1923 // Set the handlers to null before destroying WebViewCore so no 1924 // more messages will be posted. 1925 mCallbackProxy.setWebViewClient(null); 1926 mCallbackProxy.setWebChromeClient(null); 1927 // Tell WebViewCore to destroy itself 1928 synchronized (this) { 1929 WebViewCore webViewCore = mWebViewCore; 1930 mWebViewCore = null; // prevent using partial webViewCore 1931 webViewCore.destroy(); 1932 } 1933 // Remove any pending messages that might not be serviced yet. 1934 mPrivateHandler.removeCallbacksAndMessages(null); 1935 mCallbackProxy.removeCallbacksAndMessages(null); 1936 // Wake up the WebCore thread just in case it is waiting for a 1937 // JavaScript dialog. 1938 synchronized (mCallbackProxy) { 1939 mCallbackProxy.notify(); 1940 } 1941 } 1942 if (mNativeClass != 0) { 1943 nativeDestroy(); 1944 mNativeClass = 0; 1945 } 1946 } 1947 1948 /** 1949 * Enables platform notifications of data state and proxy changes. 1950 * Notifications are enabled by default. 1951 * 1952 * @deprecated This method is now obsolete. 1953 */ 1954 @Deprecated 1955 public static void enablePlatformNotifications() { 1956 checkThread(); 1957 synchronized (WebView.class) { 1958 Network.enablePlatformNotifications(); 1959 sNotificationsEnabled = true; 1960 Context context = JniUtil.getContext(); 1961 if (context != null) 1962 setupProxyListener(context); 1963 } 1964 } 1965 1966 /** 1967 * Disables platform notifications of data state and proxy changes. 1968 * Notifications are enabled by default. 1969 * 1970 * @deprecated This method is now obsolete. 1971 */ 1972 @Deprecated 1973 public static void disablePlatformNotifications() { 1974 checkThread(); 1975 synchronized (WebView.class) { 1976 Network.disablePlatformNotifications(); 1977 sNotificationsEnabled = false; 1978 Context context = JniUtil.getContext(); 1979 if (context != null) 1980 disableProxyListener(context); 1981 } 1982 } 1983 1984 /** 1985 * Sets JavaScript engine flags. 1986 * 1987 * @param flags JS engine flags in a String 1988 * 1989 * @hide This is an implementation detail. 1990 */ 1991 public void setJsFlags(String flags) { 1992 checkThread(); 1993 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1994 } 1995 1996 /** 1997 * Inform WebView of the network state. This is used to set 1998 * the JavaScript property window.navigator.isOnline and 1999 * generates the online/offline event as specified in HTML5, sec. 5.7.7 2000 * @param networkUp boolean indicating if network is available 2001 */ 2002 public void setNetworkAvailable(boolean networkUp) { 2003 checkThread(); 2004 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 2005 networkUp ? 1 : 0, 0); 2006 } 2007 2008 /** 2009 * Inform WebView about the current network type. 2010 * {@hide} 2011 */ 2012 public void setNetworkType(String type, String subtype) { 2013 checkThread(); 2014 Map<String, String> map = new HashMap<String, String>(); 2015 map.put("type", type); 2016 map.put("subtype", subtype); 2017 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 2018 } 2019 /** 2020 * Save the state of this WebView used in 2021 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 2022 * method no longer stores the display data for this WebView. The previous 2023 * behavior could potentially leak files if {@link #restoreState} was never 2024 * called. See {@link #savePicture} and {@link #restorePicture} for saving 2025 * and restoring the display data. 2026 * @param outState The Bundle to store the WebView state. 2027 * @return The same copy of the back/forward list used to save the state. If 2028 * saveState fails, the returned list will be null. 2029 * @see #savePicture 2030 * @see #restorePicture 2031 */ 2032 public WebBackForwardList saveState(Bundle outState) { 2033 checkThread(); 2034 if (outState == null) { 2035 return null; 2036 } 2037 // We grab a copy of the back/forward list because a client of WebView 2038 // may have invalidated the history list by calling clearHistory. 2039 WebBackForwardList list = copyBackForwardList(); 2040 final int currentIndex = list.getCurrentIndex(); 2041 final int size = list.getSize(); 2042 // We should fail saving the state if the list is empty or the index is 2043 // not in a valid range. 2044 if (currentIndex < 0 || currentIndex >= size || size == 0) { 2045 return null; 2046 } 2047 outState.putInt("index", currentIndex); 2048 // FIXME: This should just be a byte[][] instead of ArrayList but 2049 // Parcel.java does not have the code to handle multi-dimensional 2050 // arrays. 2051 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 2052 for (int i = 0; i < size; i++) { 2053 WebHistoryItem item = list.getItemAtIndex(i); 2054 if (null == item) { 2055 // FIXME: this shouldn't happen 2056 // need to determine how item got set to null 2057 Log.w(LOGTAG, "saveState: Unexpected null history item."); 2058 return null; 2059 } 2060 byte[] data = item.getFlattenedData(); 2061 if (data == null) { 2062 // It would be very odd to not have any data for a given history 2063 // item. And we will fail to rebuild the history list without 2064 // flattened data. 2065 return null; 2066 } 2067 history.add(data); 2068 } 2069 outState.putSerializable("history", history); 2070 if (mCertificate != null) { 2071 outState.putBundle("certificate", 2072 SslCertificate.saveState(mCertificate)); 2073 } 2074 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 2075 mZoomManager.saveZoomState(outState); 2076 return list; 2077 } 2078 2079 /** 2080 * Save the current display data to the Bundle given. Used in conjunction 2081 * with {@link #saveState}. 2082 * @param b A Bundle to store the display data. 2083 * @param dest The file to store the serialized picture data. Will be 2084 * overwritten with this WebView's picture data. 2085 * @return True if the picture was successfully saved. 2086 * @deprecated This method is now obsolete. 2087 */ 2088 @Deprecated 2089 public boolean savePicture(Bundle b, final File dest) { 2090 checkThread(); 2091 if (dest == null || b == null) { 2092 return false; 2093 } 2094 final Picture p = capturePicture(); 2095 // Use a temporary file while writing to ensure the destination file 2096 // contains valid data. 2097 final File temp = new File(dest.getPath() + ".writing"); 2098 new Thread(new Runnable() { 2099 @Override 2100 public void run() { 2101 FileOutputStream out = null; 2102 try { 2103 out = new FileOutputStream(temp); 2104 p.writeToStream(out); 2105 // Writing the picture succeeded, rename the temporary file 2106 // to the destination. 2107 temp.renameTo(dest); 2108 } catch (Exception e) { 2109 // too late to do anything about it. 2110 } finally { 2111 if (out != null) { 2112 try { 2113 out.close(); 2114 } catch (Exception e) { 2115 // Can't do anything about that 2116 } 2117 } 2118 temp.delete(); 2119 } 2120 } 2121 }).start(); 2122 // now update the bundle 2123 b.putInt("scrollX", mScrollX); 2124 b.putInt("scrollY", mScrollY); 2125 mZoomManager.saveZoomState(b); 2126 return true; 2127 } 2128 2129 private void restoreHistoryPictureFields(Picture p, Bundle b) { 2130 int sx = b.getInt("scrollX", 0); 2131 int sy = b.getInt("scrollY", 0); 2132 2133 mDrawHistory = true; 2134 mHistoryPicture = p; 2135 2136 mScrollX = sx; 2137 mScrollY = sy; 2138 mZoomManager.restoreZoomState(b); 2139 final float scale = mZoomManager.getScale(); 2140 mHistoryWidth = Math.round(p.getWidth() * scale); 2141 mHistoryHeight = Math.round(p.getHeight() * scale); 2142 2143 invalidate(); 2144 } 2145 2146 /** 2147 * Restore the display data that was save in {@link #savePicture}. Used in 2148 * conjunction with {@link #restoreState}. 2149 * 2150 * Note that this will not work if the WebView is hardware accelerated. 2151 * @param b A Bundle containing the saved display data. 2152 * @param src The file where the picture data was stored. 2153 * @return True if the picture was successfully restored. 2154 * @deprecated This method is now obsolete. 2155 */ 2156 @Deprecated 2157 public boolean restorePicture(Bundle b, File src) { 2158 checkThread(); 2159 if (src == null || b == null) { 2160 return false; 2161 } 2162 if (!src.exists()) { 2163 return false; 2164 } 2165 try { 2166 final FileInputStream in = new FileInputStream(src); 2167 final Bundle copy = new Bundle(b); 2168 new Thread(new Runnable() { 2169 @Override 2170 public void run() { 2171 try { 2172 final Picture p = Picture.createFromStream(in); 2173 if (p != null) { 2174 // Post a runnable on the main thread to update the 2175 // history picture fields. 2176 mPrivateHandler.post(new Runnable() { 2177 @Override 2178 public void run() { 2179 restoreHistoryPictureFields(p, copy); 2180 } 2181 }); 2182 } 2183 } finally { 2184 try { 2185 in.close(); 2186 } catch (Exception e) { 2187 // Nothing we can do now. 2188 } 2189 } 2190 } 2191 }).start(); 2192 } catch (FileNotFoundException e){ 2193 e.printStackTrace(); 2194 } 2195 return true; 2196 } 2197 2198 /** 2199 * Saves the view data to the output stream. The output is highly 2200 * version specific, and may not be able to be loaded by newer versions 2201 * of WebView. 2202 * @param stream The {@link OutputStream} to save to 2203 * @return True if saved successfully 2204 * @hide 2205 */ 2206 public boolean saveViewState(OutputStream stream) { 2207 try { 2208 return ViewStateSerializer.serializeViewState(stream, this); 2209 } catch (IOException e) { 2210 Log.w(LOGTAG, "Failed to saveViewState", e); 2211 } 2212 return false; 2213 } 2214 2215 /** 2216 * Loads the view data from the input stream. See 2217 * {@link #saveViewState(OutputStream)} for more information. 2218 * @param stream The {@link InputStream} to load from 2219 * @return True if loaded successfully 2220 * @hide 2221 */ 2222 public boolean loadViewState(InputStream stream) { 2223 try { 2224 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 2225 mBlockWebkitViewMessages = true; 2226 setNewPicture(mLoadedPicture, true); 2227 mLoadedPicture.mViewState = null; 2228 return true; 2229 } catch (IOException e) { 2230 Log.w(LOGTAG, "Failed to loadViewState", e); 2231 } 2232 return false; 2233 } 2234 2235 /** 2236 * Clears the view state set with {@link #loadViewState(InputStream)}. 2237 * This WebView will then switch to showing the content from webkit 2238 * @hide 2239 */ 2240 public void clearViewState() { 2241 mBlockWebkitViewMessages = false; 2242 mLoadedPicture = null; 2243 invalidate(); 2244 } 2245 2246 /** 2247 * Restore the state of this WebView from the given map used in 2248 * {@link android.app.Activity#onRestoreInstanceState}. This method should 2249 * be called to restore the state of the WebView before using the object. If 2250 * it is called after the WebView has had a chance to build state (load 2251 * pages, create a back/forward list, etc.) there may be undesirable 2252 * side-effects. Please note that this method no longer restores the 2253 * display data for this WebView. See {@link #savePicture} and {@link 2254 * #restorePicture} for saving and restoring the display data. 2255 * @param inState The incoming Bundle of state. 2256 * @return The restored back/forward list or null if restoreState failed. 2257 * @see #savePicture 2258 * @see #restorePicture 2259 */ 2260 public WebBackForwardList restoreState(Bundle inState) { 2261 checkThread(); 2262 WebBackForwardList returnList = null; 2263 if (inState == null) { 2264 return returnList; 2265 } 2266 if (inState.containsKey("index") && inState.containsKey("history")) { 2267 mCertificate = SslCertificate.restoreState( 2268 inState.getBundle("certificate")); 2269 2270 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 2271 final int index = inState.getInt("index"); 2272 // We can't use a clone of the list because we need to modify the 2273 // shared copy, so synchronize instead to prevent concurrent 2274 // modifications. 2275 synchronized (list) { 2276 final List<byte[]> history = 2277 (List<byte[]>) inState.getSerializable("history"); 2278 final int size = history.size(); 2279 // Check the index bounds so we don't crash in native code while 2280 // restoring the history index. 2281 if (index < 0 || index >= size) { 2282 return null; 2283 } 2284 for (int i = 0; i < size; i++) { 2285 byte[] data = history.remove(0); 2286 if (data == null) { 2287 // If we somehow have null data, we cannot reconstruct 2288 // the item and thus our history list cannot be rebuilt. 2289 return null; 2290 } 2291 WebHistoryItem item = new WebHistoryItem(data); 2292 list.addHistoryItem(item); 2293 } 2294 // Grab the most recent copy to return to the caller. 2295 returnList = copyBackForwardList(); 2296 // Update the copy to have the correct index. 2297 returnList.setCurrentIndex(index); 2298 } 2299 // Restore private browsing setting. 2300 if (inState.getBoolean("privateBrowsingEnabled")) { 2301 getSettings().setPrivateBrowsingEnabled(true); 2302 } 2303 mZoomManager.restoreZoomState(inState); 2304 // Remove all pending messages because we are restoring previous 2305 // state. 2306 mWebViewCore.removeMessages(); 2307 // Send a restore state message. 2308 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 2309 } 2310 return returnList; 2311 } 2312 2313 /** 2314 * Load the given URL with the specified additional HTTP headers. 2315 * @param url The URL of the resource to load. 2316 * @param additionalHttpHeaders The additional headers to be used in the 2317 * HTTP request for this URL, specified as a map from name to 2318 * value. Note that if this map contains any of the headers 2319 * that are set by default by the WebView, such as those 2320 * controlling caching, accept types or the User-Agent, their 2321 * values may be overriden by the WebView's defaults. 2322 */ 2323 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 2324 checkThread(); 2325 loadUrlImpl(url, additionalHttpHeaders); 2326 } 2327 2328 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 2329 switchOutDrawHistory(); 2330 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 2331 arg.mUrl = url; 2332 arg.mExtraHeaders = extraHeaders; 2333 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 2334 clearHelpers(); 2335 } 2336 2337 /** 2338 * Load the given URL. 2339 * @param url The URL of the resource to load. 2340 */ 2341 public void loadUrl(String url) { 2342 checkThread(); 2343 loadUrlImpl(url); 2344 } 2345 2346 private void loadUrlImpl(String url) { 2347 if (url == null) { 2348 return; 2349 } 2350 loadUrlImpl(url, null); 2351 } 2352 2353 /** 2354 * Load the url with postData using "POST" method into the WebView. If url 2355 * is not a network url, it will be loaded with {link 2356 * {@link #loadUrl(String)} instead. 2357 * 2358 * @param url The url of the resource to load. 2359 * @param postData The data will be passed to "POST" request. 2360 */ 2361 public void postUrl(String url, byte[] postData) { 2362 checkThread(); 2363 if (URLUtil.isNetworkUrl(url)) { 2364 switchOutDrawHistory(); 2365 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2366 arg.mUrl = url; 2367 arg.mPostData = postData; 2368 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2369 clearHelpers(); 2370 } else { 2371 loadUrlImpl(url); 2372 } 2373 } 2374 2375 /** 2376 * Load the given data into the WebView using a 'data' scheme URL. 2377 * <p> 2378 * Note that JavaScript's same origin policy means that script running in a 2379 * page loaded using this method will be unable to access content loaded 2380 * using any scheme other than 'data', including 'http(s)'. To avoid this 2381 * restriction, use {@link 2382 * #loadDataWithBaseURL(String,String,String,String,String) 2383 * loadDataWithBaseURL()} with an appropriate base URL. 2384 * <p> 2385 * If the value of the encoding parameter is 'base64', then the data must 2386 * be encoded as base64. Otherwise, the data must use ASCII encoding for 2387 * octets inside the range of safe URL characters and use the standard %xx 2388 * hex encoding of URLs for octets outside that range. For example, 2389 * '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively. 2390 * <p> 2391 * The 'data' scheme URL formed by this method uses the default US-ASCII 2392 * charset. If you need need to set a different charset, you should form a 2393 * 'data' scheme URL which explicitly specifies a charset parameter in the 2394 * mediatype portion of the URL and call {@link #loadUrl(String)} instead. 2395 * Note that the charset obtained from the mediatype portion of a data URL 2396 * always overrides that specified in the HTML or XML document itself. 2397 * @param data A String of data in the given encoding. 2398 * @param mimeType The MIME type of the data, e.g. 'text/html'. 2399 * @param encoding The encoding of the data. 2400 */ 2401 public void loadData(String data, String mimeType, String encoding) { 2402 checkThread(); 2403 loadDataImpl(data, mimeType, encoding); 2404 } 2405 2406 private void loadDataImpl(String data, String mimeType, String encoding) { 2407 StringBuilder dataUrl = new StringBuilder("data:"); 2408 dataUrl.append(mimeType); 2409 if ("base64".equals(encoding)) { 2410 dataUrl.append(";base64"); 2411 } 2412 dataUrl.append(","); 2413 dataUrl.append(data); 2414 loadUrlImpl(dataUrl.toString()); 2415 } 2416 2417 /** 2418 * Load the given data into the WebView, using baseUrl as the base URL for 2419 * the content. The base URL is used both to resolve relative URLs and when 2420 * applying JavaScript's same origin policy. The historyUrl is used for the 2421 * history entry. 2422 * <p> 2423 * Note that content specified in this way can access local device files 2424 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2425 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2426 * <p> 2427 * If the base URL uses the data scheme, this method is equivalent to 2428 * calling {@link #loadData(String,String,String) loadData()} and the 2429 * historyUrl is ignored. 2430 * @param baseUrl URL to use as the page's base URL. If null defaults to 2431 * 'about:blank' 2432 * @param data A String of data in the given encoding. 2433 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2434 * defaults to 'text/html'. 2435 * @param encoding The encoding of the data. 2436 * @param historyUrl URL to use as the history entry, if null defaults to 2437 * 'about:blank'. 2438 */ 2439 public void loadDataWithBaseURL(String baseUrl, String data, 2440 String mimeType, String encoding, String historyUrl) { 2441 checkThread(); 2442 2443 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2444 loadDataImpl(data, mimeType, encoding); 2445 return; 2446 } 2447 switchOutDrawHistory(); 2448 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2449 arg.mBaseUrl = baseUrl; 2450 arg.mData = data; 2451 arg.mMimeType = mimeType; 2452 arg.mEncoding = encoding; 2453 arg.mHistoryUrl = historyUrl; 2454 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2455 clearHelpers(); 2456 } 2457 2458 /** 2459 * Saves the current view as a web archive. 2460 * 2461 * @param filename The filename where the archive should be placed. 2462 */ 2463 public void saveWebArchive(String filename) { 2464 checkThread(); 2465 saveWebArchiveImpl(filename, false, null); 2466 } 2467 2468 /* package */ static class SaveWebArchiveMessage { 2469 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2470 mBasename = basename; 2471 mAutoname = autoname; 2472 mCallback = callback; 2473 } 2474 2475 /* package */ final String mBasename; 2476 /* package */ final boolean mAutoname; 2477 /* package */ final ValueCallback<String> mCallback; 2478 /* package */ String mResultFile; 2479 } 2480 2481 /** 2482 * Saves the current view as a web archive. 2483 * 2484 * @param basename The filename where the archive should be placed. 2485 * @param autoname If false, takes basename to be a file. If true, basename 2486 * is assumed to be a directory in which a filename will be 2487 * chosen according to the url of the current page. 2488 * @param callback Called after the web archive has been saved. The 2489 * parameter for onReceiveValue will either be the filename 2490 * under which the file was saved, or null if saving the 2491 * file failed. 2492 */ 2493 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2494 checkThread(); 2495 saveWebArchiveImpl(basename, autoname, callback); 2496 } 2497 2498 private void saveWebArchiveImpl(String basename, boolean autoname, 2499 ValueCallback<String> callback) { 2500 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2501 new SaveWebArchiveMessage(basename, autoname, callback)); 2502 } 2503 2504 /** 2505 * Stop the current load. 2506 */ 2507 public void stopLoading() { 2508 checkThread(); 2509 // TODO: should we clear all the messages in the queue before sending 2510 // STOP_LOADING? 2511 switchOutDrawHistory(); 2512 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2513 } 2514 2515 /** 2516 * Reload the current url. 2517 */ 2518 public void reload() { 2519 checkThread(); 2520 clearHelpers(); 2521 switchOutDrawHistory(); 2522 mWebViewCore.sendMessage(EventHub.RELOAD); 2523 } 2524 2525 /** 2526 * Return true if this WebView has a back history item. 2527 * @return True iff this WebView has a back history item. 2528 */ 2529 public boolean canGoBack() { 2530 checkThread(); 2531 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2532 synchronized (l) { 2533 if (l.getClearPending()) { 2534 return false; 2535 } else { 2536 return l.getCurrentIndex() > 0; 2537 } 2538 } 2539 } 2540 2541 /** 2542 * Go back in the history of this WebView. 2543 */ 2544 public void goBack() { 2545 checkThread(); 2546 goBackOrForwardImpl(-1); 2547 } 2548 2549 /** 2550 * Return true if this WebView has a forward history item. 2551 * @return True iff this Webview has a forward history item. 2552 */ 2553 public boolean canGoForward() { 2554 checkThread(); 2555 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2556 synchronized (l) { 2557 if (l.getClearPending()) { 2558 return false; 2559 } else { 2560 return l.getCurrentIndex() < l.getSize() - 1; 2561 } 2562 } 2563 } 2564 2565 /** 2566 * Go forward in the history of this WebView. 2567 */ 2568 public void goForward() { 2569 checkThread(); 2570 goBackOrForwardImpl(1); 2571 } 2572 2573 /** 2574 * Return true if the page can go back or forward the given 2575 * number of steps. 2576 * @param steps The negative or positive number of steps to move the 2577 * history. 2578 */ 2579 public boolean canGoBackOrForward(int steps) { 2580 checkThread(); 2581 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2582 synchronized (l) { 2583 if (l.getClearPending()) { 2584 return false; 2585 } else { 2586 int newIndex = l.getCurrentIndex() + steps; 2587 return newIndex >= 0 && newIndex < l.getSize(); 2588 } 2589 } 2590 } 2591 2592 /** 2593 * Go to the history item that is the number of steps away from 2594 * the current item. Steps is negative if backward and positive 2595 * if forward. 2596 * @param steps The number of steps to take back or forward in the back 2597 * forward list. 2598 */ 2599 public void goBackOrForward(int steps) { 2600 checkThread(); 2601 goBackOrForwardImpl(steps); 2602 } 2603 2604 private void goBackOrForwardImpl(int steps) { 2605 goBackOrForward(steps, false); 2606 } 2607 2608 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2609 if (steps != 0) { 2610 clearHelpers(); 2611 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2612 ignoreSnapshot ? 1 : 0); 2613 } 2614 } 2615 2616 /** 2617 * Returns true if private browsing is enabled in this WebView. 2618 */ 2619 public boolean isPrivateBrowsingEnabled() { 2620 checkThread(); 2621 return getSettings().isPrivateBrowsingEnabled(); 2622 } 2623 2624 private void startPrivateBrowsing() { 2625 getSettings().setPrivateBrowsingEnabled(true); 2626 } 2627 2628 private boolean extendScroll(int y) { 2629 int finalY = mScroller.getFinalY(); 2630 int newY = pinLocY(finalY + y); 2631 if (newY == finalY) return false; 2632 mScroller.setFinalY(newY); 2633 mScroller.extendDuration(computeDuration(0, y)); 2634 return true; 2635 } 2636 2637 /** 2638 * Scroll the contents of the view up by half the view size 2639 * @param top true to jump to the top of the page 2640 * @return true if the page was scrolled 2641 */ 2642 public boolean pageUp(boolean top) { 2643 checkThread(); 2644 if (mNativeClass == 0) { 2645 return false; 2646 } 2647 nativeClearCursor(); // start next trackball movement from page edge 2648 if (top) { 2649 // go to the top of the document 2650 return pinScrollTo(mScrollX, 0, true, 0); 2651 } 2652 // Page up 2653 int h = getHeight(); 2654 int y; 2655 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2656 y = -h + PAGE_SCROLL_OVERLAP; 2657 } else { 2658 y = -h / 2; 2659 } 2660 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2661 : extendScroll(y); 2662 } 2663 2664 /** 2665 * Scroll the contents of the view down by half the page size 2666 * @param bottom true to jump to bottom of page 2667 * @return true if the page was scrolled 2668 */ 2669 public boolean pageDown(boolean bottom) { 2670 checkThread(); 2671 if (mNativeClass == 0) { 2672 return false; 2673 } 2674 nativeClearCursor(); // start next trackball movement from page edge 2675 if (bottom) { 2676 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2677 } 2678 // Page down. 2679 int h = getHeight(); 2680 int y; 2681 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2682 y = h - PAGE_SCROLL_OVERLAP; 2683 } else { 2684 y = h / 2; 2685 } 2686 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2687 : extendScroll(y); 2688 } 2689 2690 /** 2691 * Clear the view so that onDraw() will draw nothing but white background, 2692 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2693 */ 2694 public void clearView() { 2695 checkThread(); 2696 mContentWidth = 0; 2697 mContentHeight = 0; 2698 setBaseLayer(0, null, false, false); 2699 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2700 } 2701 2702 /** 2703 * Return a new picture that captures the current display of the webview. 2704 * This is a copy of the display, and will be unaffected if the webview 2705 * later loads a different URL. 2706 * 2707 * @return a picture containing the current contents of the view. Note this 2708 * picture is of the entire document, and is not restricted to the 2709 * bounds of the view. 2710 */ 2711 public Picture capturePicture() { 2712 checkThread(); 2713 if (mNativeClass == 0) return null; 2714 Picture result = new Picture(); 2715 nativeCopyBaseContentToPicture(result); 2716 return result; 2717 } 2718 2719 /** 2720 * Return true if the browser is displaying a TextView for text input. 2721 */ 2722 private boolean inEditingMode() { 2723 return mWebTextView != null && mWebTextView.getParent() != null; 2724 } 2725 2726 /** 2727 * Remove the WebTextView. 2728 */ 2729 private void clearTextEntry() { 2730 if (inEditingMode()) { 2731 mWebTextView.remove(); 2732 } else { 2733 // The keyboard may be open with the WebView as the served view 2734 hideSoftKeyboard(); 2735 } 2736 } 2737 2738 /** 2739 * Return the current scale of the WebView 2740 * @return The current scale. 2741 */ 2742 public float getScale() { 2743 checkThread(); 2744 return mZoomManager.getScale(); 2745 } 2746 2747 /** 2748 * Compute the reading level scale of the WebView 2749 * @param scale The current scale. 2750 * @return The reading level scale. 2751 */ 2752 /*package*/ float computeReadingLevelScale(float scale) { 2753 return mZoomManager.computeReadingLevelScale(scale); 2754 } 2755 2756 /** 2757 * Set the initial scale for the WebView. 0 means default. If 2758 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2759 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2760 * WebView starts with this value as initial scale. 2761 * Please note that unlike the scale properties in the viewport meta tag, 2762 * this method doesn't take the screen density into account. 2763 * 2764 * @param scaleInPercent The initial scale in percent. 2765 */ 2766 public void setInitialScale(int scaleInPercent) { 2767 checkThread(); 2768 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2769 } 2770 2771 /** 2772 * Invoke the graphical zoom picker widget for this WebView. This will 2773 * result in the zoom widget appearing on the screen to control the zoom 2774 * level of this WebView. 2775 */ 2776 public void invokeZoomPicker() { 2777 checkThread(); 2778 if (!getSettings().supportZoom()) { 2779 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2780 return; 2781 } 2782 clearHelpers(); 2783 mZoomManager.invokeZoomPicker(); 2784 } 2785 2786 /** 2787 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2788 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2789 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2790 * anchor does not have a url or if it is a JavaScript url, the type will 2791 * be UNKNOWN_TYPE and the url has to be retrieved through 2792 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2793 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2794 * the "extra" field. A type of 2795 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2796 * a child node. If a phone number is found, the HitTestResult type is set 2797 * to PHONE_TYPE and the phone number is set in the "extra" field of 2798 * HitTestResult. If a map address is found, the HitTestResult type is set 2799 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2800 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2801 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2802 * HitTestResult type is set to UNKNOWN_TYPE. 2803 */ 2804 public HitTestResult getHitTestResult() { 2805 checkThread(); 2806 return hitTestResult(mInitialHitTestResult); 2807 } 2808 2809 private HitTestResult hitTestResult(HitTestResult fallback) { 2810 if (mNativeClass == 0 || sDisableNavcache) { 2811 return fallback; 2812 } 2813 2814 HitTestResult result = new HitTestResult(); 2815 if (nativeHasCursorNode()) { 2816 if (nativeCursorIsTextInput()) { 2817 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2818 } else { 2819 String text = nativeCursorText(); 2820 if (text != null) { 2821 if (text.startsWith(SCHEME_TEL)) { 2822 result.setType(HitTestResult.PHONE_TYPE); 2823 result.setExtra(URLDecoder.decode(text 2824 .substring(SCHEME_TEL.length()))); 2825 } else if (text.startsWith(SCHEME_MAILTO)) { 2826 result.setType(HitTestResult.EMAIL_TYPE); 2827 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2828 } else if (text.startsWith(SCHEME_GEO)) { 2829 result.setType(HitTestResult.GEO_TYPE); 2830 result.setExtra(URLDecoder.decode(text 2831 .substring(SCHEME_GEO.length()))); 2832 } else if (nativeCursorIsAnchor()) { 2833 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2834 result.setExtra(text); 2835 } 2836 } 2837 } 2838 } else if (fallback != null) { 2839 /* If webkit causes a rebuild while the long press is in progress, 2840 * the cursor node may be reset, even if it is still around. This 2841 * uses the cursor node saved when the touch began. Since the 2842 * nativeImageURI below only changes the result if it is successful, 2843 * this uses the data beneath the touch if available or the original 2844 * tap data otherwise. 2845 */ 2846 Log.v(LOGTAG, "hitTestResult use fallback"); 2847 result = fallback; 2848 } 2849 int type = result.getType(); 2850 if (type == HitTestResult.UNKNOWN_TYPE 2851 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2852 // Now check to see if it is an image. 2853 int contentX = viewToContentX(mLastTouchX + mScrollX); 2854 int contentY = viewToContentY(mLastTouchY + mScrollY); 2855 String text = nativeImageURI(contentX, contentY); 2856 if (text != null) { 2857 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2858 HitTestResult.IMAGE_TYPE : 2859 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2860 result.setExtra(text); 2861 } 2862 } 2863 return result; 2864 } 2865 2866 int getBlockLeftEdge(int x, int y, float readingScale) { 2867 if (!sDisableNavcache) { 2868 return nativeGetBlockLeftEdge(x, y, readingScale); 2869 } 2870 2871 float invReadingScale = 1.0f / readingScale; 2872 int readingWidth = (int) (getViewWidth() * invReadingScale); 2873 int left = NO_LEFTEDGE; 2874 if (mFocusedNode != null) { 2875 final int length = mFocusedNode.mEnclosingParentRects.length; 2876 for (int i = 0; i < length; i++) { 2877 Rect rect = mFocusedNode.mEnclosingParentRects[i]; 2878 if (rect.width() < mFocusedNode.mHitTestSlop) { 2879 // ignore bounding boxes that are too small 2880 continue; 2881 } else if (left != NO_LEFTEDGE && rect.width() > readingWidth) { 2882 // stop when bounding box doesn't fit the screen width 2883 // at reading scale 2884 break; 2885 } 2886 2887 left = rect.left; 2888 } 2889 } 2890 2891 return left; 2892 } 2893 2894 // Called by JNI when the DOM has changed the focus. Clear the focus so 2895 // that new keys will go to the newly focused field 2896 private void domChangedFocus() { 2897 if (inEditingMode()) { 2898 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2899 } 2900 } 2901 /** 2902 * Request the anchor or image element URL at the last tapped point. 2903 * If hrefMsg is null, this method returns immediately and does not 2904 * dispatch hrefMsg to its target. If the tapped point hits an image, 2905 * an anchor, or an image in an anchor, the message associates 2906 * strings in named keys in its data. The value paired with the key 2907 * may be an empty string. 2908 * 2909 * @param hrefMsg This message will be dispatched with the result of the 2910 * request. The message data contains three keys: 2911 * - "url" returns the anchor's href attribute. 2912 * - "title" returns the anchor's text. 2913 * - "src" returns the image's src attribute. 2914 */ 2915 public void requestFocusNodeHref(Message hrefMsg) { 2916 checkThread(); 2917 if (hrefMsg == null) { 2918 return; 2919 } 2920 int contentX = viewToContentX(mLastTouchX + mScrollX); 2921 int contentY = viewToContentY(mLastTouchY + mScrollY); 2922 if (mFocusedNode != null && mFocusedNode.mHitTestX == contentX 2923 && mFocusedNode.mHitTestY == contentY) { 2924 hrefMsg.getData().putString(FocusNodeHref.URL, mFocusedNode.mLinkUrl); 2925 hrefMsg.getData().putString(FocusNodeHref.TITLE, mFocusedNode.mAnchorText); 2926 hrefMsg.getData().putString(FocusNodeHref.SRC, mFocusedNode.mImageUrl); 2927 hrefMsg.sendToTarget(); 2928 return; 2929 } 2930 if (nativeHasCursorNode()) { 2931 Rect cursorBounds = nativeGetCursorRingBounds(); 2932 if (!cursorBounds.contains(contentX, contentY)) { 2933 int slop = viewToContentDimension(mNavSlop); 2934 cursorBounds.inset(-slop, -slop); 2935 if (cursorBounds.contains(contentX, contentY)) { 2936 contentX = cursorBounds.centerX(); 2937 contentY = cursorBounds.centerY(); 2938 } 2939 } 2940 } 2941 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2942 contentX, contentY, hrefMsg); 2943 } 2944 2945 /** 2946 * Request the url of the image last touched by the user. msg will be sent 2947 * to its target with a String representing the url as its object. 2948 * 2949 * @param msg This message will be dispatched with the result of the request 2950 * as the data member with "url" as key. The result can be null. 2951 */ 2952 public void requestImageRef(Message msg) { 2953 checkThread(); 2954 if (0 == mNativeClass) return; // client isn't initialized 2955 int contentX = viewToContentX(mLastTouchX + mScrollX); 2956 int contentY = viewToContentY(mLastTouchY + mScrollY); 2957 String ref = nativeImageURI(contentX, contentY); 2958 Bundle data = msg.getData(); 2959 data.putString("url", ref); 2960 msg.setData(data); 2961 msg.sendToTarget(); 2962 } 2963 2964 static int pinLoc(int x, int viewMax, int docMax) { 2965// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2966 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2967 // pin the short document to the top/left of the screen 2968 x = 0; 2969// Log.d(LOGTAG, "--- center " + x); 2970 } else if (x < 0) { 2971 x = 0; 2972// Log.d(LOGTAG, "--- zero"); 2973 } else if (x + viewMax > docMax) { 2974 x = docMax - viewMax; 2975// Log.d(LOGTAG, "--- pin " + x); 2976 } 2977 return x; 2978 } 2979 2980 // Expects x in view coordinates 2981 int pinLocX(int x) { 2982 if (mInOverScrollMode) return x; 2983 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2984 } 2985 2986 // Expects y in view coordinates 2987 int pinLocY(int y) { 2988 if (mInOverScrollMode) return y; 2989 return pinLoc(y, getViewHeightWithTitle(), 2990 computeRealVerticalScrollRange() + getTitleHeight()); 2991 } 2992 2993 /** 2994 * A title bar which is embedded in this WebView, and scrolls along with it 2995 * vertically, but not horizontally. 2996 */ 2997 private View mTitleBar; 2998 2999 /** 3000 * the title bar rendering gravity 3001 */ 3002 private int mTitleGravity; 3003 3004 /** 3005 * Add or remove a title bar to be embedded into the WebView, and scroll 3006 * along with it vertically, while remaining in view horizontally. Pass 3007 * null to remove the title bar from the WebView, and return to drawing 3008 * the WebView normally without translating to account for the title bar. 3009 * @hide 3010 */ 3011 public void setEmbeddedTitleBar(View v) { 3012 if (mTitleBar == v) return; 3013 if (mTitleBar != null) { 3014 removeView(mTitleBar); 3015 } 3016 if (null != v) { 3017 addView(v, new AbsoluteLayout.LayoutParams( 3018 ViewGroup.LayoutParams.MATCH_PARENT, 3019 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 3020 } 3021 mTitleBar = v; 3022 } 3023 3024 /** 3025 * Set where to render the embedded title bar 3026 * NO_GRAVITY at the top of the page 3027 * TOP at the top of the screen 3028 * @hide 3029 */ 3030 public void setTitleBarGravity(int gravity) { 3031 mTitleGravity = gravity; 3032 // force refresh 3033 invalidate(); 3034 } 3035 3036 /** 3037 * Given a distance in view space, convert it to content space. Note: this 3038 * does not reflect translation, just scaling, so this should not be called 3039 * with coordinates, but should be called for dimensions like width or 3040 * height. 3041 */ 3042 private int viewToContentDimension(int d) { 3043 return Math.round(d * mZoomManager.getInvScale()); 3044 } 3045 3046 /** 3047 * Given an x coordinate in view space, convert it to content space. Also 3048 * may be used for absolute heights (such as for the WebTextView's 3049 * textSize, which is unaffected by the height of the title bar). 3050 */ 3051 /*package*/ int viewToContentX(int x) { 3052 return viewToContentDimension(x); 3053 } 3054 3055 /** 3056 * Given a y coordinate in view space, convert it to content space. 3057 * Takes into account the height of the title bar if there is one 3058 * embedded into the WebView. 3059 */ 3060 /*package*/ int viewToContentY(int y) { 3061 return viewToContentDimension(y - getTitleHeight()); 3062 } 3063 3064 /** 3065 * Given a x coordinate in view space, convert it to content space. 3066 * Returns the result as a float. 3067 */ 3068 private float viewToContentXf(int x) { 3069 return x * mZoomManager.getInvScale(); 3070 } 3071 3072 /** 3073 * Given a y coordinate in view space, convert it to content space. 3074 * Takes into account the height of the title bar if there is one 3075 * embedded into the WebView. Returns the result as a float. 3076 */ 3077 private float viewToContentYf(int y) { 3078 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 3079 } 3080 3081 /** 3082 * Given a distance in content space, convert it to view space. Note: this 3083 * does not reflect translation, just scaling, so this should not be called 3084 * with coordinates, but should be called for dimensions like width or 3085 * height. 3086 */ 3087 /*package*/ int contentToViewDimension(int d) { 3088 return Math.round(d * mZoomManager.getScale()); 3089 } 3090 3091 /** 3092 * Given an x coordinate in content space, convert it to view 3093 * space. 3094 */ 3095 /*package*/ int contentToViewX(int x) { 3096 return contentToViewDimension(x); 3097 } 3098 3099 /** 3100 * Given a y coordinate in content space, convert it to view 3101 * space. Takes into account the height of the title bar. 3102 */ 3103 /*package*/ int contentToViewY(int y) { 3104 return contentToViewDimension(y) + getTitleHeight(); 3105 } 3106 3107 private Rect contentToViewRect(Rect x) { 3108 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 3109 contentToViewX(x.right), contentToViewY(x.bottom)); 3110 } 3111 3112 /* To invalidate a rectangle in content coordinates, we need to transform 3113 the rect into view coordinates, so we can then call invalidate(...). 3114 3115 Normally, we would just call contentToView[XY](...), which eventually 3116 calls Math.round(coordinate * mActualScale). However, for invalidates, 3117 we need to account for the slop that occurs with antialiasing. To 3118 address that, we are a little more liberal in the size of the rect that 3119 we invalidate. 3120 3121 This liberal calculation calls floor() for the top/left, and ceil() for 3122 the bottom/right coordinates. This catches the possible extra pixels of 3123 antialiasing that we might have missed with just round(). 3124 */ 3125 3126 // Called by JNI to invalidate the View, given rectangle coordinates in 3127 // content space 3128 private void viewInvalidate(int l, int t, int r, int b) { 3129 final float scale = mZoomManager.getScale(); 3130 final int dy = getTitleHeight(); 3131 invalidate((int)Math.floor(l * scale), 3132 (int)Math.floor(t * scale) + dy, 3133 (int)Math.ceil(r * scale), 3134 (int)Math.ceil(b * scale) + dy); 3135 } 3136 3137 // Called by JNI to invalidate the View after a delay, given rectangle 3138 // coordinates in content space 3139 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 3140 final float scale = mZoomManager.getScale(); 3141 final int dy = getTitleHeight(); 3142 postInvalidateDelayed(delay, 3143 (int)Math.floor(l * scale), 3144 (int)Math.floor(t * scale) + dy, 3145 (int)Math.ceil(r * scale), 3146 (int)Math.ceil(b * scale) + dy); 3147 } 3148 3149 private void invalidateContentRect(Rect r) { 3150 viewInvalidate(r.left, r.top, r.right, r.bottom); 3151 } 3152 3153 // stop the scroll animation, and don't let a subsequent fling add 3154 // to the existing velocity 3155 private void abortAnimation() { 3156 mScroller.abortAnimation(); 3157 mLastVelocity = 0; 3158 } 3159 3160 /* call from webcoreview.draw(), so we're still executing in the UI thread 3161 */ 3162 private void recordNewContentSize(int w, int h, boolean updateLayout) { 3163 3164 // premature data from webkit, ignore 3165 if ((w | h) == 0) { 3166 return; 3167 } 3168 3169 // don't abort a scroll animation if we didn't change anything 3170 if (mContentWidth != w || mContentHeight != h) { 3171 // record new dimensions 3172 mContentWidth = w; 3173 mContentHeight = h; 3174 // If history Picture is drawn, don't update scroll. They will be 3175 // updated when we get out of that mode. 3176 if (!mDrawHistory) { 3177 // repin our scroll, taking into account the new content size 3178 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 3179 if (!mScroller.isFinished()) { 3180 // We are in the middle of a scroll. Repin the final scroll 3181 // position. 3182 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 3183 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 3184 } 3185 } 3186 } 3187 contentSizeChanged(updateLayout); 3188 } 3189 3190 // Used to avoid sending many visible rect messages. 3191 private Rect mLastVisibleRectSent = new Rect(); 3192 private Rect mLastGlobalRect = new Rect(); 3193 private Rect mVisibleRect = new Rect(); 3194 private Rect mGlobalVisibleRect = new Rect(); 3195 private Point mScrollOffset = new Point(); 3196 3197 Rect sendOurVisibleRect() { 3198 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 3199 calcOurContentVisibleRect(mVisibleRect); 3200 // Rect.equals() checks for null input. 3201 if (!mVisibleRect.equals(mLastVisibleRectSent)) { 3202 if (!mBlockWebkitViewMessages) { 3203 mScrollOffset.set(mVisibleRect.left, mVisibleRect.top); 3204 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 3205 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 3206 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, mScrollOffset); 3207 } 3208 mLastVisibleRectSent.set(mVisibleRect); 3209 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3210 } 3211 if (getGlobalVisibleRect(mGlobalVisibleRect) 3212 && !mGlobalVisibleRect.equals(mLastGlobalRect)) { 3213 if (DebugFlags.WEB_VIEW) { 3214 Log.v(LOGTAG, "sendOurVisibleRect=(" + mGlobalVisibleRect.left + "," 3215 + mGlobalVisibleRect.top + ",r=" + mGlobalVisibleRect.right + ",b=" 3216 + mGlobalVisibleRect.bottom); 3217 } 3218 // TODO: the global offset is only used by windowRect() 3219 // in ChromeClientAndroid ; other clients such as touch 3220 // and mouse events could return view + screen relative points. 3221 if (!mBlockWebkitViewMessages) { 3222 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, mGlobalVisibleRect); 3223 } 3224 mLastGlobalRect.set(mGlobalVisibleRect); 3225 } 3226 return mVisibleRect; 3227 } 3228 3229 private Point mGlobalVisibleOffset = new Point(); 3230 // Sets r to be the visible rectangle of our webview in view coordinates 3231 private void calcOurVisibleRect(Rect r) { 3232 getGlobalVisibleRect(r, mGlobalVisibleOffset); 3233 r.offset(-mGlobalVisibleOffset.x, -mGlobalVisibleOffset.y); 3234 } 3235 3236 // Sets r to be our visible rectangle in content coordinates 3237 private void calcOurContentVisibleRect(Rect r) { 3238 calcOurVisibleRect(r); 3239 r.left = viewToContentX(r.left); 3240 // viewToContentY will remove the total height of the title bar. Add 3241 // the visible height back in to account for the fact that if the title 3242 // bar is partially visible, the part of the visible rect which is 3243 // displaying our content is displaced by that amount. 3244 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 3245 r.right = viewToContentX(r.right); 3246 r.bottom = viewToContentY(r.bottom); 3247 } 3248 3249 private Rect mContentVisibleRect = new Rect(); 3250 // Sets r to be our visible rectangle in content coordinates. We use this 3251 // method on the native side to compute the position of the fixed layers. 3252 // Uses floating coordinates (necessary to correctly place elements when 3253 // the scale factor is not 1) 3254 private void calcOurContentVisibleRectF(RectF r) { 3255 calcOurVisibleRect(mContentVisibleRect); 3256 r.left = viewToContentXf(mContentVisibleRect.left); 3257 // viewToContentY will remove the total height of the title bar. Add 3258 // the visible height back in to account for the fact that if the title 3259 // bar is partially visible, the part of the visible rect which is 3260 // displaying our content is displaced by that amount. 3261 r.top = viewToContentYf(mContentVisibleRect.top + getVisibleTitleHeightImpl()); 3262 r.right = viewToContentXf(mContentVisibleRect.right); 3263 r.bottom = viewToContentYf(mContentVisibleRect.bottom); 3264 } 3265 3266 static class ViewSizeData { 3267 int mWidth; 3268 int mHeight; 3269 float mHeightWidthRatio; 3270 int mActualViewHeight; 3271 int mTextWrapWidth; 3272 int mAnchorX; 3273 int mAnchorY; 3274 float mScale; 3275 boolean mIgnoreHeight; 3276 } 3277 3278 /** 3279 * Compute unzoomed width and height, and if they differ from the last 3280 * values we sent, send them to webkit (to be used as new viewport) 3281 * 3282 * @param force ensures that the message is sent to webkit even if the width 3283 * or height has not changed since the last message 3284 * 3285 * @return true if new values were sent 3286 */ 3287 boolean sendViewSizeZoom(boolean force) { 3288 if (mBlockWebkitViewMessages) return false; 3289 if (mZoomManager.isPreventingWebkitUpdates()) return false; 3290 3291 int viewWidth = getViewWidth(); 3292 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 3293 // This height could be fixed and be different from actual visible height. 3294 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 3295 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 3296 // Make the ratio more accurate than (newHeight / newWidth), since the 3297 // latter both are calculated and rounded. 3298 float heightWidthRatio = (float) viewHeight / viewWidth; 3299 /* 3300 * Because the native side may have already done a layout before the 3301 * View system was able to measure us, we have to send a height of 0 to 3302 * remove excess whitespace when we grow our width. This will trigger a 3303 * layout and a change in content size. This content size change will 3304 * mean that contentSizeChanged will either call this method directly or 3305 * indirectly from onSizeChanged. 3306 */ 3307 if (newWidth > mLastWidthSent && mWrapContent) { 3308 newHeight = 0; 3309 heightWidthRatio = 0; 3310 } 3311 // Actual visible content height. 3312 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 3313 // Avoid sending another message if the dimensions have not changed. 3314 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 3315 actualViewHeight != mLastActualHeightSent) { 3316 ViewSizeData data = new ViewSizeData(); 3317 data.mWidth = newWidth; 3318 data.mHeight = newHeight; 3319 data.mHeightWidthRatio = heightWidthRatio; 3320 data.mActualViewHeight = actualViewHeight; 3321 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 3322 data.mScale = mZoomManager.getScale(); 3323 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 3324 && !mHeightCanMeasure; 3325 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 3326 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 3327 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 3328 mLastWidthSent = newWidth; 3329 mLastHeightSent = newHeight; 3330 mLastActualHeightSent = actualViewHeight; 3331 mZoomManager.clearDocumentAnchor(); 3332 return true; 3333 } 3334 return false; 3335 } 3336 3337 /** 3338 * Update the double-tap zoom. 3339 */ 3340 /* package */ void updateDoubleTapZoom(int doubleTapZoom) { 3341 mZoomManager.updateDoubleTapZoom(doubleTapZoom); 3342 } 3343 3344 private int computeRealHorizontalScrollRange() { 3345 if (mDrawHistory) { 3346 return mHistoryWidth; 3347 } else { 3348 // to avoid rounding error caused unnecessary scrollbar, use floor 3349 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 3350 } 3351 } 3352 3353 @Override 3354 protected int computeHorizontalScrollRange() { 3355 int range = computeRealHorizontalScrollRange(); 3356 3357 // Adjust reported range if overscrolled to compress the scroll bars 3358 final int scrollX = mScrollX; 3359 final int overscrollRight = computeMaxScrollX(); 3360 if (scrollX < 0) { 3361 range -= scrollX; 3362 } else if (scrollX > overscrollRight) { 3363 range += scrollX - overscrollRight; 3364 } 3365 3366 return range; 3367 } 3368 3369 @Override 3370 protected int computeHorizontalScrollOffset() { 3371 return Math.max(mScrollX, 0); 3372 } 3373 3374 private int computeRealVerticalScrollRange() { 3375 if (mDrawHistory) { 3376 return mHistoryHeight; 3377 } else { 3378 // to avoid rounding error caused unnecessary scrollbar, use floor 3379 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 3380 } 3381 } 3382 3383 @Override 3384 protected int computeVerticalScrollRange() { 3385 int range = computeRealVerticalScrollRange(); 3386 3387 // Adjust reported range if overscrolled to compress the scroll bars 3388 final int scrollY = mScrollY; 3389 final int overscrollBottom = computeMaxScrollY(); 3390 if (scrollY < 0) { 3391 range -= scrollY; 3392 } else if (scrollY > overscrollBottom) { 3393 range += scrollY - overscrollBottom; 3394 } 3395 3396 return range; 3397 } 3398 3399 @Override 3400 protected int computeVerticalScrollOffset() { 3401 return Math.max(mScrollY - getTitleHeight(), 0); 3402 } 3403 3404 @Override 3405 protected int computeVerticalScrollExtent() { 3406 return getViewHeight(); 3407 } 3408 3409 /** @hide */ 3410 @Override 3411 protected void onDrawVerticalScrollBar(Canvas canvas, 3412 Drawable scrollBar, 3413 int l, int t, int r, int b) { 3414 if (mScrollY < 0) { 3415 t -= mScrollY; 3416 } 3417 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3418 scrollBar.draw(canvas); 3419 } 3420 3421 @Override 3422 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3423 boolean clampedY) { 3424 // Special-case layer scrolling so that we do not trigger normal scroll 3425 // updating. 3426 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3427 scrollLayerTo(scrollX, scrollY); 3428 return; 3429 } 3430 mInOverScrollMode = false; 3431 int maxX = computeMaxScrollX(); 3432 int maxY = computeMaxScrollY(); 3433 if (maxX == 0) { 3434 // do not over scroll x if the page just fits the screen 3435 scrollX = pinLocX(scrollX); 3436 } else if (scrollX < 0 || scrollX > maxX) { 3437 mInOverScrollMode = true; 3438 } 3439 if (scrollY < 0 || scrollY > maxY) { 3440 mInOverScrollMode = true; 3441 } 3442 3443 int oldX = mScrollX; 3444 int oldY = mScrollY; 3445 3446 super.scrollTo(scrollX, scrollY); 3447 3448 if (mOverScrollGlow != null) { 3449 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 3450 } 3451 } 3452 3453 /** 3454 * Get the url for the current page. This is not always the same as the url 3455 * passed to WebViewClient.onPageStarted because although the load for 3456 * that url has begun, the current page may not have changed. 3457 * @return The url for the current page. 3458 */ 3459 public String getUrl() { 3460 checkThread(); 3461 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3462 return h != null ? h.getUrl() : null; 3463 } 3464 3465 /** 3466 * Get the original url for the current page. This is not always the same 3467 * as the url passed to WebViewClient.onPageStarted because although the 3468 * load for that url has begun, the current page may not have changed. 3469 * Also, there may have been redirects resulting in a different url to that 3470 * originally requested. 3471 * @return The url that was originally requested for the current page. 3472 */ 3473 public String getOriginalUrl() { 3474 checkThread(); 3475 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3476 return h != null ? h.getOriginalUrl() : null; 3477 } 3478 3479 /** 3480 * Get the title for the current page. This is the title of the current page 3481 * until WebViewClient.onReceivedTitle is called. 3482 * @return The title for the current page. 3483 */ 3484 public String getTitle() { 3485 checkThread(); 3486 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3487 return h != null ? h.getTitle() : null; 3488 } 3489 3490 /** 3491 * Get the favicon for the current page. This is the favicon of the current 3492 * page until WebViewClient.onReceivedIcon is called. 3493 * @return The favicon for the current page. 3494 */ 3495 public Bitmap getFavicon() { 3496 checkThread(); 3497 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3498 return h != null ? h.getFavicon() : null; 3499 } 3500 3501 /** 3502 * Get the touch icon url for the apple-touch-icon <link> element, or 3503 * a URL on this site's server pointing to the standard location of a 3504 * touch icon. 3505 * @hide 3506 */ 3507 public String getTouchIconUrl() { 3508 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3509 return h != null ? h.getTouchIconUrl() : null; 3510 } 3511 3512 /** 3513 * Get the progress for the current page. 3514 * @return The progress for the current page between 0 and 100. 3515 */ 3516 public int getProgress() { 3517 checkThread(); 3518 return mCallbackProxy.getProgress(); 3519 } 3520 3521 /** 3522 * @return the height of the HTML content. 3523 */ 3524 public int getContentHeight() { 3525 checkThread(); 3526 return mContentHeight; 3527 } 3528 3529 /** 3530 * @return the width of the HTML content. 3531 * @hide 3532 */ 3533 public int getContentWidth() { 3534 return mContentWidth; 3535 } 3536 3537 /** 3538 * @hide 3539 */ 3540 public int getPageBackgroundColor() { 3541 return nativeGetBackgroundColor(); 3542 } 3543 3544 /** 3545 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3546 * is a global requests, not restricted to just this webview. This can be 3547 * useful if the application has been paused. 3548 */ 3549 public void pauseTimers() { 3550 checkThread(); 3551 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3552 } 3553 3554 /** 3555 * Resume all layout, parsing, and JavaScript timers for all webviews. 3556 * This will resume dispatching all timers. 3557 */ 3558 public void resumeTimers() { 3559 checkThread(); 3560 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3561 } 3562 3563 /** 3564 * Call this to pause any extra processing associated with this WebView and 3565 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3566 * is taken offscreen, this could be called to reduce unnecessary CPU or 3567 * network traffic. When the WebView is again "active", call onResume(). 3568 * 3569 * Note that this differs from pauseTimers(), which affects all WebViews. 3570 */ 3571 public void onPause() { 3572 checkThread(); 3573 if (!mIsPaused) { 3574 mIsPaused = true; 3575 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3576 // We want to pause the current playing video when switching out 3577 // from the current WebView/tab. 3578 if (mHTML5VideoViewProxy != null) { 3579 mHTML5VideoViewProxy.pauseAndDispatch(); 3580 } 3581 if (mNativeClass != 0) { 3582 nativeSetPauseDrawing(mNativeClass, true); 3583 } 3584 3585 cancelSelectDialog(); 3586 WebCoreThreadWatchdog.pause(); 3587 } 3588 } 3589 3590 @Override 3591 protected void onWindowVisibilityChanged(int visibility) { 3592 super.onWindowVisibilityChanged(visibility); 3593 updateDrawingState(); 3594 } 3595 3596 void updateDrawingState() { 3597 if (mNativeClass == 0 || mIsPaused) return; 3598 if (getWindowVisibility() != VISIBLE) { 3599 nativeSetPauseDrawing(mNativeClass, true); 3600 } else if (getVisibility() != VISIBLE) { 3601 nativeSetPauseDrawing(mNativeClass, true); 3602 } else { 3603 nativeSetPauseDrawing(mNativeClass, false); 3604 } 3605 } 3606 3607 /** 3608 * Call this to resume a WebView after a previous call to onPause(). 3609 */ 3610 public void onResume() { 3611 checkThread(); 3612 if (mIsPaused) { 3613 mIsPaused = false; 3614 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3615 if (mNativeClass != 0) { 3616 nativeSetPauseDrawing(mNativeClass, false); 3617 } 3618 } 3619 // Ensure that the watchdog has a currently valid Context to be able to display 3620 // a prompt dialog. For example, if the Activity was finished whilst the WebCore 3621 // thread was blocked and the Activity is started again, we may reuse the blocked 3622 // thread, but we'll have a new Activity. 3623 WebCoreThreadWatchdog.updateContext(mContext); 3624 // We get a call to onResume for new WebViews (i.e. mIsPaused will be false). We need 3625 // to ensure that the Watchdog thread is running for the new WebView, so call 3626 // it outside the if block above. 3627 WebCoreThreadWatchdog.resume(); 3628 } 3629 3630 /** 3631 * Returns true if the view is paused, meaning onPause() was called. Calling 3632 * onResume() sets the paused state back to false. 3633 * @hide 3634 */ 3635 public boolean isPaused() { 3636 return mIsPaused; 3637 } 3638 3639 /** 3640 * Call this to inform the view that memory is low so that it can 3641 * free any available memory. 3642 */ 3643 public void freeMemory() { 3644 checkThread(); 3645 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3646 } 3647 3648 /** 3649 * Clear the resource cache. Note that the cache is per-application, so 3650 * this will clear the cache for all WebViews used. 3651 * 3652 * @param includeDiskFiles If false, only the RAM cache is cleared. 3653 */ 3654 public void clearCache(boolean includeDiskFiles) { 3655 checkThread(); 3656 // Note: this really needs to be a static method as it clears cache for all 3657 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3658 // we can't make this static. 3659 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3660 includeDiskFiles ? 1 : 0, 0); 3661 } 3662 3663 /** 3664 * Make sure that clearing the form data removes the adapter from the 3665 * currently focused textfield if there is one. 3666 */ 3667 public void clearFormData() { 3668 checkThread(); 3669 if (inEditingMode()) { 3670 mWebTextView.setAdapterCustom(null); 3671 } 3672 } 3673 3674 /** 3675 * Tell the WebView to clear its internal back/forward list. 3676 */ 3677 public void clearHistory() { 3678 checkThread(); 3679 mCallbackProxy.getBackForwardList().setClearPending(); 3680 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3681 } 3682 3683 /** 3684 * Clear the SSL preferences table stored in response to proceeding with SSL 3685 * certificate errors. 3686 */ 3687 public void clearSslPreferences() { 3688 checkThread(); 3689 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3690 } 3691 3692 /** 3693 * Return the WebBackForwardList for this WebView. This contains the 3694 * back/forward list for use in querying each item in the history stack. 3695 * This is a copy of the private WebBackForwardList so it contains only a 3696 * snapshot of the current state. Multiple calls to this method may return 3697 * different objects. The object returned from this method will not be 3698 * updated to reflect any new state. 3699 */ 3700 public WebBackForwardList copyBackForwardList() { 3701 checkThread(); 3702 return mCallbackProxy.getBackForwardList().clone(); 3703 } 3704 3705 /* 3706 * Highlight and scroll to the next occurance of String in findAll. 3707 * Wraps the page infinitely, and scrolls. Must be called after 3708 * calling findAll. 3709 * 3710 * @param forward Direction to search. 3711 */ 3712 public void findNext(boolean forward) { 3713 checkThread(); 3714 if (0 == mNativeClass) return; // client isn't initialized 3715 mWebViewCore.sendMessage(EventHub.FIND_NEXT, forward ? 1 : 0); 3716 } 3717 3718 /* 3719 * Find all instances of find on the page and highlight them. 3720 * @param find String to find. 3721 * @return int The number of occurances of the String "find" 3722 * that were found. 3723 */ 3724 public int findAll(String find) { 3725 return findAllBody(find, false); 3726 } 3727 3728 /** 3729 * @hide 3730 */ 3731 public void findAllAsync(String find) { 3732 findAllBody(find, true); 3733 } 3734 3735 private int findAllBody(String find, boolean isAsync) { 3736 checkThread(); 3737 if (0 == mNativeClass) return 0; // client isn't initialized 3738 mLastFind = find; 3739 mWebViewCore.removeMessages(EventHub.FIND_ALL); 3740 WebViewCore.FindAllRequest request = new 3741 WebViewCore.FindAllRequest(find); 3742 if (isAsync) { 3743 mWebViewCore.sendMessage(EventHub.FIND_ALL, request); 3744 return 0; // no need to wait for response 3745 } 3746 synchronized(request) { 3747 try { 3748 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.FIND_ALL, 3749 request); 3750 while (request.mMatchCount == -1) { 3751 request.wait(); 3752 } 3753 } 3754 catch (InterruptedException e) { 3755 return 0; 3756 } 3757 } 3758 return request.mMatchCount; 3759 } 3760 3761 /** 3762 * Start an ActionMode for finding text in this WebView. Only works if this 3763 * WebView is attached to the view system. 3764 * @param text If non-null, will be the initial text to search for. 3765 * Otherwise, the last String searched for in this WebView will 3766 * be used to start. 3767 * @param showIme If true, show the IME, assuming the user will begin typing. 3768 * If false and text is non-null, perform a find all. 3769 * @return boolean True if the find dialog is shown, false otherwise. 3770 */ 3771 public boolean showFindDialog(String text, boolean showIme) { 3772 checkThread(); 3773 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3774 if (getParent() == null || startActionMode(callback) == null) { 3775 // Could not start the action mode, so end Find on page 3776 return false; 3777 } 3778 mCachedOverlappingActionModeHeight = -1; 3779 mFindCallback = callback; 3780 setFindIsUp(true); 3781 mFindCallback.setWebView(this); 3782 if (showIme) { 3783 mFindCallback.showSoftInput(); 3784 } else if (text != null) { 3785 mFindCallback.setText(text); 3786 mFindCallback.findAll(); 3787 return true; 3788 } 3789 if (text == null) { 3790 text = mLastFind; 3791 } 3792 if (text != null) { 3793 mFindCallback.setText(text); 3794 mFindCallback.findAll(); 3795 } 3796 return true; 3797 } 3798 3799 /** 3800 * Keep track of the find callback so that we can remove its titlebar if 3801 * necessary. 3802 */ 3803 private FindActionModeCallback mFindCallback; 3804 3805 /** 3806 * Toggle whether the find dialog is showing, for both native and Java. 3807 */ 3808 private void setFindIsUp(boolean isUp) { 3809 mFindIsUp = isUp; 3810 if (0 == mNativeClass) return; // client isn't initialized 3811 nativeSetFindIsUp(isUp); 3812 } 3813 3814 // Used to know whether the find dialog is open. Affects whether 3815 // or not we draw the highlights for matches. 3816 private boolean mFindIsUp; 3817 3818 // Keep track of the last string sent, so we can search again when find is 3819 // reopened. 3820 private String mLastFind; 3821 3822 /** 3823 * Return the first substring consisting of the address of a physical 3824 * location. Currently, only addresses in the United States are detected, 3825 * and consist of: 3826 * - a house number 3827 * - a street name 3828 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3829 * - a city name 3830 * - a state or territory, either spelled out or two-letter abbr. 3831 * - an optional 5 digit or 9 digit zip code. 3832 * 3833 * All names must be correctly capitalized, and the zip code, if present, 3834 * must be valid for the state. The street type must be a standard USPS 3835 * spelling or abbreviation. The state or territory must also be spelled 3836 * or abbreviated using USPS standards. The house number may not exceed 3837 * five digits. 3838 * @param addr The string to search for addresses. 3839 * 3840 * @return the address, or if no address is found, return null. 3841 */ 3842 public static String findAddress(String addr) { 3843 checkThread(); 3844 return findAddress(addr, false); 3845 } 3846 3847 /** 3848 * @hide 3849 * Return the first substring consisting of the address of a physical 3850 * location. Currently, only addresses in the United States are detected, 3851 * and consist of: 3852 * - a house number 3853 * - a street name 3854 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3855 * - a city name 3856 * - a state or territory, either spelled out or two-letter abbr. 3857 * - an optional 5 digit or 9 digit zip code. 3858 * 3859 * Names are optionally capitalized, and the zip code, if present, 3860 * must be valid for the state. The street type must be a standard USPS 3861 * spelling or abbreviation. The state or territory must also be spelled 3862 * or abbreviated using USPS standards. The house number may not exceed 3863 * five digits. 3864 * @param addr The string to search for addresses. 3865 * @param caseInsensitive addr Set to true to make search ignore case. 3866 * 3867 * @return the address, or if no address is found, return null. 3868 */ 3869 public static String findAddress(String addr, boolean caseInsensitive) { 3870 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3871 } 3872 3873 /* 3874 * Clear the highlighting surrounding text matches created by findAll. 3875 */ 3876 public void clearMatches() { 3877 checkThread(); 3878 if (mNativeClass == 0) 3879 return; 3880 mWebViewCore.removeMessages(EventHub.FIND_ALL); 3881 mWebViewCore.sendMessage(EventHub.FIND_ALL, null); 3882 } 3883 3884 3885 /** 3886 * Called when the find ActionMode ends. 3887 */ 3888 void notifyFindDialogDismissed() { 3889 mFindCallback = null; 3890 mCachedOverlappingActionModeHeight = -1; 3891 if (mWebViewCore == null) { 3892 return; 3893 } 3894 clearMatches(); 3895 setFindIsUp(false); 3896 // Now that the dialog has been removed, ensure that we scroll to a 3897 // location that is not beyond the end of the page. 3898 pinScrollTo(mScrollX, mScrollY, false, 0); 3899 invalidate(); 3900 } 3901 3902 /** 3903 * Query the document to see if it contains any image references. The 3904 * message object will be dispatched with arg1 being set to 1 if images 3905 * were found and 0 if the document does not reference any images. 3906 * @param response The message that will be dispatched with the result. 3907 */ 3908 public void documentHasImages(Message response) { 3909 checkThread(); 3910 if (response == null) { 3911 return; 3912 } 3913 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3914 } 3915 3916 /** 3917 * Request the scroller to abort any ongoing animation 3918 * 3919 * @hide 3920 */ 3921 public void stopScroll() { 3922 mScroller.forceFinished(true); 3923 mLastVelocity = 0; 3924 } 3925 3926 @Override 3927 public void computeScroll() { 3928 if (mScroller.computeScrollOffset()) { 3929 int oldX = mScrollX; 3930 int oldY = mScrollY; 3931 int x = mScroller.getCurrX(); 3932 int y = mScroller.getCurrY(); 3933 invalidate(); // So we draw again 3934 3935 if (!mScroller.isFinished()) { 3936 int rangeX = computeMaxScrollX(); 3937 int rangeY = computeMaxScrollY(); 3938 int overflingDistance = mOverflingDistance; 3939 3940 // Use the layer's scroll data if needed. 3941 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3942 oldX = mScrollingLayerRect.left; 3943 oldY = mScrollingLayerRect.top; 3944 rangeX = mScrollingLayerRect.right; 3945 rangeY = mScrollingLayerRect.bottom; 3946 // No overscrolling for layers. 3947 overflingDistance = 0; 3948 } 3949 3950 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3951 rangeX, rangeY, 3952 overflingDistance, overflingDistance, false); 3953 3954 if (mOverScrollGlow != null) { 3955 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3956 } 3957 } else { 3958 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3959 mScrollX = x; 3960 mScrollY = y; 3961 } else { 3962 // Update the layer position instead of WebView. 3963 scrollLayerTo(x, y); 3964 } 3965 abortAnimation(); 3966 nativeSetIsScrolling(false); 3967 if (!mBlockWebkitViewMessages) { 3968 WebViewCore.resumePriority(); 3969 if (!mSelectingText) { 3970 WebViewCore.resumeUpdatePicture(mWebViewCore); 3971 } 3972 } 3973 if (oldX != mScrollX || oldY != mScrollY) { 3974 sendOurVisibleRect(); 3975 } 3976 } 3977 } else { 3978 super.computeScroll(); 3979 } 3980 } 3981 3982 private void scrollLayerTo(int x, int y) { 3983 if (x == mScrollingLayerRect.left && y == mScrollingLayerRect.top) { 3984 return; 3985 } 3986 if (mSelectingText) { 3987 int dx = mScrollingLayerRect.left - x; 3988 int dy = mScrollingLayerRect.top - y; 3989 if (mSelectCursorBaseLayerId == mCurrentScrollingLayerId) { 3990 mSelectCursorBase.offset(dx, dy); 3991 } 3992 if (mSelectCursorExtentLayerId == mCurrentScrollingLayerId) { 3993 mSelectCursorExtent.offset(dx, dy); 3994 } 3995 } 3996 nativeScrollLayer(mCurrentScrollingLayerId, x, y); 3997 mScrollingLayerRect.left = x; 3998 mScrollingLayerRect.top = y; 3999 mWebViewCore.sendMessage(WebViewCore.EventHub.SCROLL_LAYER, mCurrentScrollingLayerId, 4000 mScrollingLayerRect); 4001 onScrollChanged(mScrollX, mScrollY, mScrollX, mScrollY); 4002 invalidate(); 4003 } 4004 4005 private static int computeDuration(int dx, int dy) { 4006 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 4007 int duration = distance * 1000 / STD_SPEED; 4008 return Math.min(duration, MAX_DURATION); 4009 } 4010 4011 // helper to pin the scrollBy parameters (already in view coordinates) 4012 // returns true if the scroll was changed 4013 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 4014 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 4015 } 4016 // helper to pin the scrollTo parameters (already in view coordinates) 4017 // returns true if the scroll was changed 4018 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 4019 x = pinLocX(x); 4020 y = pinLocY(y); 4021 int dx = x - mScrollX; 4022 int dy = y - mScrollY; 4023 4024 if ((dx | dy) == 0) { 4025 return false; 4026 } 4027 abortAnimation(); 4028 if (animate) { 4029 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 4030 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 4031 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 4032 awakenScrollBars(mScroller.getDuration()); 4033 invalidate(); 4034 } else { 4035 scrollTo(x, y); 4036 } 4037 return true; 4038 } 4039 4040 // Scale from content to view coordinates, and pin. 4041 // Also called by jni webview.cpp 4042 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 4043 if (mDrawHistory) { 4044 // disallow WebView to change the scroll position as History Picture 4045 // is used in the view system. 4046 // TODO: as we switchOutDrawHistory when trackball or navigation 4047 // keys are hit, this should be safe. Right? 4048 return false; 4049 } 4050 cx = contentToViewDimension(cx); 4051 cy = contentToViewDimension(cy); 4052 if (mHeightCanMeasure) { 4053 // move our visible rect according to scroll request 4054 if (cy != 0) { 4055 Rect tempRect = new Rect(); 4056 calcOurVisibleRect(tempRect); 4057 tempRect.offset(cx, cy); 4058 requestRectangleOnScreen(tempRect); 4059 } 4060 // FIXME: We scroll horizontally no matter what because currently 4061 // ScrollView and ListView will not scroll horizontally. 4062 // FIXME: Why do we only scroll horizontally if there is no 4063 // vertical scroll? 4064// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 4065 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 4066 } else { 4067 return pinScrollBy(cx, cy, animate, 0); 4068 } 4069 } 4070 4071 /** 4072 * Called by CallbackProxy when the page starts loading. 4073 * @param url The URL of the page which has started loading. 4074 */ 4075 /* package */ void onPageStarted(String url) { 4076 // every time we start a new page, we want to reset the 4077 // WebView certificate: if the new site is secure, we 4078 // will reload it and get a new certificate set; 4079 // if the new site is not secure, the certificate must be 4080 // null, and that will be the case 4081 setCertificate(null); 4082 4083 // reset the flag since we set to true in if need after 4084 // loading is see onPageFinished(Url) 4085 mAccessibilityScriptInjected = false; 4086 } 4087 4088 /** 4089 * Called by CallbackProxy when the page finishes loading. 4090 * @param url The URL of the page which has finished loading. 4091 */ 4092 /* package */ void onPageFinished(String url) { 4093 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 4094 // If the user is now on a different page, or has scrolled the page 4095 // past the point where the title bar is offscreen, ignore the 4096 // scroll request. 4097 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 4098 && mScrollX == 0 && mScrollY == 0) { 4099 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 4100 SLIDE_TITLE_DURATION); 4101 } 4102 mPageThatNeedsToSlideTitleBarOffScreen = null; 4103 } 4104 mZoomManager.onPageFinished(url); 4105 injectAccessibilityForUrl(url); 4106 } 4107 4108 /** 4109 * This method injects accessibility in the loaded document if accessibility 4110 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 4111 * If no URL specific script is found or JavaScript is disabled we fallback to 4112 * the default {@link AccessibilityInjector} implementation. 4113 * </p> 4114 * If the URL has the "axs" paramter set to 1 it has already done the 4115 * script injection so we do nothing. If the parameter is set to 0 4116 * the URL opts out accessibility script injection so we fall back to 4117 * the default {@link AccessibilityInjector}. 4118 * </p> 4119 * Note: If the user has not opted-in the accessibility script injection no scripts 4120 * are injected rather the default {@link AccessibilityInjector} implementation 4121 * is used. 4122 * 4123 * @param url The URL loaded by this {@link WebView}. 4124 */ 4125 private void injectAccessibilityForUrl(String url) { 4126 if (mWebViewCore == null) { 4127 return; 4128 } 4129 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 4130 4131 if (!accessibilityManager.isEnabled()) { 4132 // it is possible that accessibility was turned off between reloads 4133 ensureAccessibilityScriptInjectorInstance(false); 4134 return; 4135 } 4136 4137 if (!getSettings().getJavaScriptEnabled()) { 4138 // no JS so we fallback to the basic buil-in support 4139 ensureAccessibilityScriptInjectorInstance(true); 4140 return; 4141 } 4142 4143 // check the URL "axs" parameter to choose appropriate action 4144 int axsParameterValue = getAxsUrlParameterValue(url); 4145 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 4146 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 4147 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 4148 if (onDeviceScriptInjectionEnabled) { 4149 ensureAccessibilityScriptInjectorInstance(false); 4150 // neither script injected nor script injection opted out => we inject 4151 loadUrl(getScreenReaderInjectingJs()); 4152 // TODO: Set this flag after successfull script injection. Maybe upon injection 4153 // the chooser should update the meta tag and we check it to declare success 4154 mAccessibilityScriptInjected = true; 4155 } else { 4156 // injection disabled so we fallback to the basic built-in support 4157 ensureAccessibilityScriptInjectorInstance(true); 4158 } 4159 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 4160 // injection opted out so we fallback to the basic buil-in support 4161 ensureAccessibilityScriptInjectorInstance(true); 4162 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 4163 ensureAccessibilityScriptInjectorInstance(false); 4164 // the URL provides accessibility but we still need to add our generic script 4165 loadUrl(getScreenReaderInjectingJs()); 4166 } else { 4167 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 4168 } 4169 } 4170 4171 /** 4172 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 4173 * 4174 * @param present True to ensure an insance, false to ensure no instance. 4175 */ 4176 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 4177 if (present) { 4178 if (mAccessibilityInjector == null) { 4179 mAccessibilityInjector = new AccessibilityInjector(this); 4180 } 4181 } else { 4182 mAccessibilityInjector = null; 4183 } 4184 } 4185 4186 /** 4187 * Gets JavaScript that injects a screen-reader. 4188 * 4189 * @return The JavaScript snippet. 4190 */ 4191 private String getScreenReaderInjectingJs() { 4192 String screenReaderUrl = Settings.Secure.getString(mContext.getContentResolver(), 4193 Settings.Secure.ACCESSIBILITY_SCREEN_READER_URL); 4194 return String.format(ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE, screenReaderUrl); 4195 } 4196 4197 /** 4198 * Gets the "axs" URL parameter value. 4199 * 4200 * @param url A url to fetch the paramter from. 4201 * @return The parameter value if such, -1 otherwise. 4202 */ 4203 private int getAxsUrlParameterValue(String url) { 4204 if (mMatchAxsUrlParameterPattern == null) { 4205 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 4206 } 4207 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 4208 if (matcher.find()) { 4209 String keyValuePair = url.substring(matcher.start(), matcher.end()); 4210 return Integer.parseInt(keyValuePair.split("=")[1]); 4211 } 4212 return -1; 4213 } 4214 4215 /** 4216 * The URL of a page that sent a message to scroll the title bar off screen. 4217 * 4218 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 4219 * title bar off the screen. Sometimes, the scroll position is set before 4220 * the page finishes loading. Rather than scrolling while the page is still 4221 * loading, keep track of the URL and new scroll position so we can perform 4222 * the scroll once the page finishes loading. 4223 */ 4224 private String mPageThatNeedsToSlideTitleBarOffScreen; 4225 4226 /** 4227 * The destination Y scroll position to be used when the page finishes 4228 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 4229 */ 4230 private int mYDistanceToSlideTitleOffScreen; 4231 4232 // scale from content to view coordinates, and pin 4233 // return true if pin caused the final x/y different than the request cx/cy, 4234 // and a future scroll may reach the request cx/cy after our size has 4235 // changed 4236 // return false if the view scroll to the exact position as it is requested, 4237 // where negative numbers are taken to mean 0 4238 private boolean setContentScrollTo(int cx, int cy) { 4239 if (mDrawHistory) { 4240 // disallow WebView to change the scroll position as History Picture 4241 // is used in the view system. 4242 // One known case where this is called is that WebCore tries to 4243 // restore the scroll position. As history Picture already uses the 4244 // saved scroll position, it is ok to skip this. 4245 return false; 4246 } 4247 int vx; 4248 int vy; 4249 if ((cx | cy) == 0) { 4250 // If the page is being scrolled to (0,0), do not add in the title 4251 // bar's height, and simply scroll to (0,0). (The only other work 4252 // in contentToView_ is to multiply, so this would not change 0.) 4253 vx = 0; 4254 vy = 0; 4255 } else { 4256 vx = contentToViewX(cx); 4257 vy = contentToViewY(cy); 4258 } 4259// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 4260// vx + " " + vy + "]"); 4261 // Some mobile sites attempt to scroll the title bar off the page by 4262 // scrolling to (0,1). If we are at the top left corner of the 4263 // page, assume this is an attempt to scroll off the title bar, and 4264 // animate the title bar off screen slowly enough that the user can see 4265 // it. 4266 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 4267 && mTitleBar != null) { 4268 // FIXME: 100 should be defined somewhere as our max progress. 4269 if (getProgress() < 100) { 4270 // Wait to scroll the title bar off screen until the page has 4271 // finished loading. Keep track of the URL and the destination 4272 // Y position 4273 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 4274 mYDistanceToSlideTitleOffScreen = vy; 4275 } else { 4276 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 4277 } 4278 // Since we are animating, we have not yet reached the desired 4279 // scroll position. Do not return true to request another attempt 4280 return false; 4281 } 4282 pinScrollTo(vx, vy, false, 0); 4283 // If the request was to scroll to a negative coordinate, treat it as if 4284 // it was a request to scroll to 0 4285 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 4286 return true; 4287 } else { 4288 return false; 4289 } 4290 } 4291 4292 // scale from content to view coordinates, and pin 4293 private void spawnContentScrollTo(int cx, int cy) { 4294 if (mDrawHistory) { 4295 // disallow WebView to change the scroll position as History Picture 4296 // is used in the view system. 4297 return; 4298 } 4299 int vx = contentToViewX(cx); 4300 int vy = contentToViewY(cy); 4301 pinScrollTo(vx, vy, true, 0); 4302 } 4303 4304 /** 4305 * These are from webkit, and are in content coordinate system (unzoomed) 4306 */ 4307 private void contentSizeChanged(boolean updateLayout) { 4308 // suppress 0,0 since we usually see real dimensions soon after 4309 // this avoids drawing the prev content in a funny place. If we find a 4310 // way to consolidate these notifications, this check may become 4311 // obsolete 4312 if ((mContentWidth | mContentHeight) == 0) { 4313 return; 4314 } 4315 4316 if (mHeightCanMeasure) { 4317 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 4318 || updateLayout) { 4319 requestLayout(); 4320 } 4321 } else if (mWidthCanMeasure) { 4322 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 4323 || updateLayout) { 4324 requestLayout(); 4325 } 4326 } else { 4327 // If we don't request a layout, try to send our view size to the 4328 // native side to ensure that WebCore has the correct dimensions. 4329 sendViewSizeZoom(false); 4330 } 4331 } 4332 4333 /** 4334 * Set the WebViewClient that will receive various notifications and 4335 * requests. This will replace the current handler. 4336 * @param client An implementation of WebViewClient. 4337 */ 4338 public void setWebViewClient(WebViewClient client) { 4339 checkThread(); 4340 mCallbackProxy.setWebViewClient(client); 4341 } 4342 4343 /** 4344 * Gets the WebViewClient 4345 * @return the current WebViewClient instance. 4346 * 4347 * @hide This is an implementation detail. 4348 */ 4349 public WebViewClient getWebViewClient() { 4350 return mCallbackProxy.getWebViewClient(); 4351 } 4352 4353 /** 4354 * Register the interface to be used when content can not be handled by 4355 * the rendering engine, and should be downloaded instead. This will replace 4356 * the current handler. 4357 * @param listener An implementation of DownloadListener. 4358 */ 4359 public void setDownloadListener(DownloadListener listener) { 4360 checkThread(); 4361 mCallbackProxy.setDownloadListener(listener); 4362 } 4363 4364 /** 4365 * Set the chrome handler. This is an implementation of WebChromeClient for 4366 * use in handling JavaScript dialogs, favicons, titles, and the progress. 4367 * This will replace the current handler. 4368 * @param client An implementation of WebChromeClient. 4369 */ 4370 public void setWebChromeClient(WebChromeClient client) { 4371 checkThread(); 4372 mCallbackProxy.setWebChromeClient(client); 4373 } 4374 4375 /** 4376 * Gets the chrome handler. 4377 * @return the current WebChromeClient instance. 4378 * 4379 * @hide This is an implementation detail. 4380 */ 4381 public WebChromeClient getWebChromeClient() { 4382 return mCallbackProxy.getWebChromeClient(); 4383 } 4384 4385 /** 4386 * Set the back/forward list client. This is an implementation of 4387 * WebBackForwardListClient for handling new items and changes in the 4388 * history index. 4389 * @param client An implementation of WebBackForwardListClient. 4390 * {@hide} 4391 */ 4392 public void setWebBackForwardListClient(WebBackForwardListClient client) { 4393 mCallbackProxy.setWebBackForwardListClient(client); 4394 } 4395 4396 /** 4397 * Gets the WebBackForwardListClient. 4398 * {@hide} 4399 */ 4400 public WebBackForwardListClient getWebBackForwardListClient() { 4401 return mCallbackProxy.getWebBackForwardListClient(); 4402 } 4403 4404 /** 4405 * Set the Picture listener. This is an interface used to receive 4406 * notifications of a new Picture. 4407 * @param listener An implementation of WebView.PictureListener. 4408 * @deprecated This method is now obsolete. 4409 */ 4410 @Deprecated 4411 public void setPictureListener(PictureListener listener) { 4412 checkThread(); 4413 mPictureListener = listener; 4414 } 4415 4416 /** 4417 * {@hide} 4418 */ 4419 /* FIXME: Debug only! Remove for SDK! */ 4420 public void externalRepresentation(Message callback) { 4421 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 4422 } 4423 4424 /** 4425 * {@hide} 4426 */ 4427 /* FIXME: Debug only! Remove for SDK! */ 4428 public void documentAsText(Message callback) { 4429 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 4430 } 4431 4432 /** 4433 * This method injects the supplied Java object into the WebView. The 4434 * object is injected into the JavaScript context of the main frame, using 4435 * the supplied name. This allows the Java object to be accessed from 4436 * JavaScript. Note that that injected objects will not appear in 4437 * JavaScript until the page is next (re)loaded. For example: 4438 * <pre> webView.addJavascriptInterface(new Object(), "injectedObject"); 4439 * webView.loadData("<!DOCTYPE html><title></title>", "text/html", null); 4440 * webView.loadUrl("javascript:alert(injectedObject.toString())");</pre> 4441 * <p><strong>IMPORTANT:</strong> 4442 * <ul> 4443 * <li> addJavascriptInterface() can be used to allow JavaScript to control 4444 * the host application. This is a powerful feature, but also presents a 4445 * security risk. Use of this method in a WebView containing untrusted 4446 * content could allow an attacker to manipulate the host application in 4447 * unintended ways, executing Java code with the permissions of the host 4448 * application. Use extreme care when using this method in a WebView which 4449 * could contain untrusted content. 4450 * <li> JavaScript interacts with Java object on a private, background 4451 * thread of the WebView. Care is therefore required to maintain thread 4452 * safety.</li> 4453 * </ul></p> 4454 * @param object The Java object to inject into the WebView's JavaScript 4455 * context. Null values are ignored. 4456 * @param name The name used to expose the instance in JavaScript. 4457 */ 4458 public void addJavascriptInterface(Object object, String name) { 4459 checkThread(); 4460 if (object == null) { 4461 return; 4462 } 4463 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4464 arg.mObject = object; 4465 arg.mInterfaceName = name; 4466 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 4467 } 4468 4469 /** 4470 * Removes a previously added JavaScript interface with the given name. 4471 * @param interfaceName The name of the interface to remove. 4472 */ 4473 public void removeJavascriptInterface(String interfaceName) { 4474 checkThread(); 4475 if (mWebViewCore != null) { 4476 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4477 arg.mInterfaceName = interfaceName; 4478 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 4479 } 4480 } 4481 4482 /** 4483 * Return the WebSettings object used to control the settings for this 4484 * WebView. 4485 * @return A WebSettings object that can be used to control this WebView's 4486 * settings. 4487 */ 4488 public WebSettings getSettings() { 4489 checkThread(); 4490 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4491 } 4492 4493 /** 4494 * Return the list of currently loaded plugins. 4495 * @return The list of currently loaded plugins. 4496 * 4497 * @hide 4498 * @deprecated This was used for Gears, which has been deprecated. 4499 */ 4500 @Deprecated 4501 public static synchronized PluginList getPluginList() { 4502 checkThread(); 4503 return new PluginList(); 4504 } 4505 4506 /** 4507 * @hide 4508 * @deprecated This was used for Gears, which has been deprecated. 4509 */ 4510 @Deprecated 4511 public void refreshPlugins(boolean reloadOpenPages) { 4512 checkThread(); 4513 } 4514 4515 //------------------------------------------------------------------------- 4516 // Override View methods 4517 //------------------------------------------------------------------------- 4518 4519 @Override 4520 protected void finalize() throws Throwable { 4521 try { 4522 if (mNativeClass != 0) { 4523 mPrivateHandler.post(new Runnable() { 4524 @Override 4525 public void run() { 4526 destroy(); 4527 } 4528 }); 4529 } 4530 } finally { 4531 super.finalize(); 4532 } 4533 } 4534 4535 @Override 4536 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 4537 if (child == mTitleBar) { 4538 // When drawing the title bar, move it horizontally to always show 4539 // at the top of the WebView. 4540 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 4541 int newTop = 0; 4542 if (mTitleGravity == Gravity.NO_GRAVITY) { 4543 newTop = Math.min(0, mScrollY); 4544 } else if (mTitleGravity == Gravity.TOP) { 4545 newTop = mScrollY; 4546 } 4547 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 4548 mTitleBar.setTop(newTop); 4549 } 4550 return super.drawChild(canvas, child, drawingTime); 4551 } 4552 4553 private void drawContent(Canvas canvas, boolean drawRings) { 4554 drawCoreAndCursorRing(canvas, mBackgroundColor, 4555 mDrawCursorRing && drawRings); 4556 } 4557 4558 /** 4559 * Draw the background when beyond bounds 4560 * @param canvas Canvas to draw into 4561 */ 4562 private void drawOverScrollBackground(Canvas canvas) { 4563 if (mOverScrollBackground == null) { 4564 mOverScrollBackground = new Paint(); 4565 Bitmap bm = BitmapFactory.decodeResource( 4566 mContext.getResources(), 4567 com.android.internal.R.drawable.status_bar_background); 4568 mOverScrollBackground.setShader(new BitmapShader(bm, 4569 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4570 mOverScrollBorder = new Paint(); 4571 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4572 mOverScrollBorder.setStrokeWidth(0); 4573 mOverScrollBorder.setColor(0xffbbbbbb); 4574 } 4575 4576 int top = 0; 4577 int right = computeRealHorizontalScrollRange(); 4578 int bottom = top + computeRealVerticalScrollRange(); 4579 // first draw the background and anchor to the top of the view 4580 canvas.save(); 4581 canvas.translate(mScrollX, mScrollY); 4582 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4583 - mScrollY, Region.Op.DIFFERENCE); 4584 canvas.drawPaint(mOverScrollBackground); 4585 canvas.restore(); 4586 // then draw the border 4587 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4588 // next clip the region for the content 4589 canvas.clipRect(0, top, right, bottom); 4590 } 4591 4592 @Override 4593 protected void onDraw(Canvas canvas) { 4594 if (inFullScreenMode()) { 4595 return; // no need to draw anything if we aren't visible. 4596 } 4597 // if mNativeClass is 0, the WebView is either destroyed or not 4598 // initialized. In either case, just draw the background color and return 4599 if (mNativeClass == 0) { 4600 canvas.drawColor(mBackgroundColor); 4601 return; 4602 } 4603 4604 // if both mContentWidth and mContentHeight are 0, it means there is no 4605 // valid Picture passed to WebView yet. This can happen when WebView 4606 // just starts. Draw the background and return. 4607 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4608 canvas.drawColor(mBackgroundColor); 4609 return; 4610 } 4611 4612 if (canvas.isHardwareAccelerated()) { 4613 mZoomManager.setHardwareAccelerated(); 4614 } else { 4615 mWebViewCore.resumeWebKitDraw(); 4616 } 4617 4618 int saveCount = canvas.save(); 4619 if (mInOverScrollMode && !getSettings() 4620 .getUseWebViewBackgroundForOverscrollBackground()) { 4621 drawOverScrollBackground(canvas); 4622 } 4623 if (mTitleBar != null) { 4624 canvas.translate(0, getTitleHeight()); 4625 } 4626 boolean drawNativeRings = !sDisableNavcache; 4627 drawContent(canvas, drawNativeRings); 4628 canvas.restoreToCount(saveCount); 4629 4630 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4631 invalidate(); 4632 } 4633 mWebViewCore.signalRepaintDone(); 4634 4635 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4636 invalidate(); 4637 } 4638 4639 if (mFocusTransition != null) { 4640 mFocusTransition.draw(canvas); 4641 } else if (shouldDrawHighlightRect()) { 4642 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4643 Rect r = new Rect(); 4644 while (iter.next(r)) { 4645 canvas.drawRect(r, mTouchHightlightPaint); 4646 } 4647 } 4648 if (DEBUG_TOUCH_HIGHLIGHT) { 4649 if (getSettings().getNavDump()) { 4650 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4651 if (mTouchCrossHairColor == null) { 4652 mTouchCrossHairColor = new Paint(); 4653 mTouchCrossHairColor.setColor(Color.RED); 4654 } 4655 canvas.drawLine(mTouchHighlightX - mNavSlop, 4656 mTouchHighlightY - mNavSlop, mTouchHighlightX 4657 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4658 + 1, mTouchCrossHairColor); 4659 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4660 mTouchHighlightY - mNavSlop, mTouchHighlightX 4661 - mNavSlop, 4662 mTouchHighlightY + mNavSlop + 1, 4663 mTouchCrossHairColor); 4664 } 4665 } 4666 } 4667 } 4668 4669 private void removeTouchHighlight() { 4670 mWebViewCore.removeMessages(EventHub.HIT_TEST); 4671 mPrivateHandler.removeMessages(HIT_TEST_RESULT); 4672 setTouchHighlightRects(null); 4673 } 4674 4675 @Override 4676 public void setLayoutParams(ViewGroup.LayoutParams params) { 4677 if (params.height == LayoutParams.WRAP_CONTENT) { 4678 mWrapContent = true; 4679 } 4680 super.setLayoutParams(params); 4681 } 4682 4683 @Override 4684 public boolean performLongClick() { 4685 // performLongClick() is the result of a delayed message. If we switch 4686 // to windows overview, the WebView will be temporarily removed from the 4687 // view system. In that case, do nothing. 4688 if (getParent() == null) return false; 4689 4690 // A multi-finger gesture can look like a long press; make sure we don't take 4691 // long press actions if we're scaling. 4692 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4693 if (detector != null && detector.isInProgress()) { 4694 return false; 4695 } 4696 4697 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4698 // Send the click so that the textfield is in focus 4699 centerKeyPressOnTextField(); 4700 rebuildWebTextView(); 4701 } else { 4702 clearTextEntry(); 4703 } 4704 if (inEditingMode()) { 4705 // Since we just called rebuildWebTextView, the layout is not set 4706 // properly. Update it so it can correctly find the word to select. 4707 mWebTextView.ensureLayout(); 4708 // Provide a touch down event to WebTextView, which will allow it 4709 // to store the location to use in performLongClick. 4710 AbsoluteLayout.LayoutParams params 4711 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4712 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4713 mLastTouchTime, MotionEvent.ACTION_DOWN, 4714 mLastTouchX - params.x + mScrollX, 4715 mLastTouchY - params.y + mScrollY, 0); 4716 mWebTextView.dispatchTouchEvent(fake); 4717 return mWebTextView.performLongClick(); 4718 } 4719 if (mSelectingText) return false; // long click does nothing on selection 4720 /* if long click brings up a context menu, the super function 4721 * returns true and we're done. Otherwise, nothing happened when 4722 * the user clicked. */ 4723 if (super.performLongClick()) { 4724 return true; 4725 } 4726 /* In the case where the application hasn't already handled the long 4727 * click action, look for a word under the click. If one is found, 4728 * animate the text selection into view. 4729 * FIXME: no animation code yet */ 4730 final boolean isSelecting = selectText(); 4731 if (isSelecting) { 4732 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4733 } else if (focusCandidateIsEditableText()) { 4734 mSelectCallback = new SelectActionModeCallback(); 4735 mSelectCallback.setWebView(this); 4736 mSelectCallback.setTextSelected(false); 4737 startActionMode(mSelectCallback); 4738 } 4739 return isSelecting; 4740 } 4741 4742 /** 4743 * Select the word at the last click point. 4744 * 4745 * @hide This is an implementation detail. 4746 */ 4747 public boolean selectText() { 4748 int x = viewToContentX(mLastTouchX + mScrollX); 4749 int y = viewToContentY(mLastTouchY + mScrollY); 4750 return selectText(x, y); 4751 } 4752 4753 /** 4754 * Select the word at the indicated content coordinates. 4755 */ 4756 boolean selectText(int x, int y) { 4757 mWebViewCore.sendMessage(EventHub.SELECT_WORD_AT, x, y); 4758 return true; 4759 } 4760 4761 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4762 4763 @Override 4764 protected void onConfigurationChanged(Configuration newConfig) { 4765 mCachedOverlappingActionModeHeight = -1; 4766 if (mSelectingText && mOrientation != newConfig.orientation) { 4767 selectionDone(); 4768 } 4769 mOrientation = newConfig.orientation; 4770 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 4771 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4772 } 4773 } 4774 4775 /** 4776 * Keep track of the Callback so we can end its ActionMode or remove its 4777 * titlebar. 4778 */ 4779 private SelectActionModeCallback mSelectCallback; 4780 4781 // These values are possible options for didUpdateWebTextViewDimensions. 4782 private static final int FULLY_ON_SCREEN = 0; 4783 private static final int INTERSECTS_SCREEN = 1; 4784 private static final int ANYWHERE = 2; 4785 4786 /** 4787 * Check to see if the focused textfield/textarea is still on screen. If it 4788 * is, update the the dimensions and location of WebTextView. Otherwise, 4789 * remove the WebTextView. Should be called when the zoom level changes. 4790 * @param intersection How to determine whether the textfield/textarea is 4791 * still on screen. 4792 * @return boolean True if the textfield/textarea is still on screen and the 4793 * dimensions/location of WebTextView have been updated. 4794 */ 4795 private boolean didUpdateWebTextViewDimensions(int intersection) { 4796 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4797 Rect vBox = contentToViewRect(contentBounds); 4798 Rect visibleRect = new Rect(); 4799 calcOurVisibleRect(visibleRect); 4800 offsetByLayerScrollPosition(vBox); 4801 // If the textfield is on screen, place the WebTextView in 4802 // its new place, accounting for our new scroll/zoom values, 4803 // and adjust its textsize. 4804 boolean onScreen; 4805 switch (intersection) { 4806 case FULLY_ON_SCREEN: 4807 onScreen = visibleRect.contains(vBox); 4808 break; 4809 case INTERSECTS_SCREEN: 4810 onScreen = Rect.intersects(visibleRect, vBox); 4811 break; 4812 case ANYWHERE: 4813 onScreen = true; 4814 break; 4815 default: 4816 throw new AssertionError( 4817 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4818 } 4819 if (onScreen) { 4820 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4821 vBox.height()); 4822 mWebTextView.updateTextSize(); 4823 updateWebTextViewPadding(); 4824 return true; 4825 } else { 4826 // The textfield is now off screen. The user probably 4827 // was not zooming to see the textfield better. Remove 4828 // the WebTextView. If the user types a key, and the 4829 // textfield is still in focus, we will reconstruct 4830 // the WebTextView and scroll it back on screen. 4831 mWebTextView.remove(); 4832 return false; 4833 } 4834 } 4835 4836 private void offsetByLayerScrollPosition(Rect box) { 4837 if ((mCurrentScrollingLayerId != 0) 4838 && (mCurrentScrollingLayerId == nativeFocusCandidateLayerId())) { 4839 box.offsetTo(box.left - mScrollingLayerRect.left, 4840 box.top - mScrollingLayerRect.top); 4841 } 4842 } 4843 4844 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4845 boolean isPictureAfterFirstLayout) { 4846 if (mNativeClass == 0) 4847 return; 4848 boolean queueFull; 4849 queueFull = nativeSetBaseLayer(mNativeClass, layer, invalRegion, 4850 showVisualIndicator, isPictureAfterFirstLayout); 4851 4852 if (layer == 0 || isPictureAfterFirstLayout) { 4853 mWebViewCore.resumeWebKitDraw(); 4854 } else if (queueFull) { 4855 // temporarily disable webkit draw throttling 4856 // TODO: re-enable 4857 // mWebViewCore.pauseWebKitDraw(); 4858 } 4859 4860 if (mHTML5VideoViewProxy != null) { 4861 mHTML5VideoViewProxy.setBaseLayer(layer); 4862 } 4863 } 4864 4865 int getBaseLayer() { 4866 if (mNativeClass == 0) { 4867 return 0; 4868 } 4869 return nativeGetBaseLayer(); 4870 } 4871 4872 private void onZoomAnimationStart() { 4873 // If it is in password mode, turn it off so it does not draw misplaced. 4874 if (inEditingMode()) { 4875 mWebTextView.setVisibility(INVISIBLE); 4876 } 4877 } 4878 4879 private void onZoomAnimationEnd() { 4880 // adjust the edit text view if needed 4881 if (inEditingMode() 4882 && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) { 4883 // If it is a password field, start drawing the WebTextView once 4884 // again. 4885 mWebTextView.setVisibility(VISIBLE); 4886 } 4887 } 4888 4889 void onFixedLengthZoomAnimationStart() { 4890 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4891 onZoomAnimationStart(); 4892 } 4893 4894 void onFixedLengthZoomAnimationEnd() { 4895 if (!mBlockWebkitViewMessages && !mSelectingText) { 4896 WebViewCore.resumeUpdatePicture(mWebViewCore); 4897 } 4898 onZoomAnimationEnd(); 4899 } 4900 4901 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4902 Paint.DITHER_FLAG | 4903 Paint.SUBPIXEL_TEXT_FLAG; 4904 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4905 Paint.DITHER_FLAG; 4906 4907 private final DrawFilter mZoomFilter = 4908 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4909 // If we need to trade better quality for speed, set mScrollFilter to null 4910 private final DrawFilter mScrollFilter = 4911 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4912 4913 private void drawCoreAndCursorRing(Canvas canvas, int color, 4914 boolean drawCursorRing) { 4915 if (mDrawHistory) { 4916 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4917 canvas.drawPicture(mHistoryPicture); 4918 return; 4919 } 4920 if (mNativeClass == 0) return; 4921 4922 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4923 boolean animateScroll = ((!mScroller.isFinished() 4924 || mVelocityTracker != null) 4925 && (mTouchMode != TOUCH_DRAG_MODE || 4926 mHeldMotionless != MOTIONLESS_TRUE)) 4927 || mDeferTouchMode == TOUCH_DRAG_MODE; 4928 if (mTouchMode == TOUCH_DRAG_MODE) { 4929 if (mHeldMotionless == MOTIONLESS_PENDING) { 4930 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4931 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4932 mHeldMotionless = MOTIONLESS_FALSE; 4933 } 4934 if (mHeldMotionless == MOTIONLESS_FALSE) { 4935 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4936 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4937 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4938 .obtainMessage(AWAKEN_SCROLL_BARS), 4939 ViewConfiguration.getScrollDefaultDelay()); 4940 mHeldMotionless = MOTIONLESS_PENDING; 4941 } 4942 } 4943 int saveCount = canvas.save(); 4944 if (animateZoom) { 4945 mZoomManager.animateZoom(canvas); 4946 } else if (!canvas.isHardwareAccelerated()) { 4947 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4948 } 4949 4950 boolean UIAnimationsRunning = false; 4951 // Currently for each draw we compute the animation values; 4952 // We may in the future decide to do that independently. 4953 if (mNativeClass != 0 && !canvas.isHardwareAccelerated() 4954 && nativeEvaluateLayersAnimations(mNativeClass)) { 4955 UIAnimationsRunning = true; 4956 // If we have unfinished (or unstarted) animations, 4957 // we ask for a repaint. We only need to do this in software 4958 // rendering (with hardware rendering we already have a different 4959 // method of requesting a repaint) 4960 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 4961 invalidate(); 4962 } 4963 4964 // decide which adornments to draw 4965 int extras = DRAW_EXTRAS_NONE; 4966 if (!mFindIsUp) { 4967 if (mSelectingText) { 4968 extras = DRAW_EXTRAS_SELECTION; 4969 } else if (drawCursorRing) { 4970 extras = DRAW_EXTRAS_CURSOR_RING; 4971 } 4972 } 4973 if (DebugFlags.WEB_VIEW) { 4974 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4975 + " mSelectingText=" + mSelectingText 4976 + " nativePageShouldHandleShiftAndArrows()=" 4977 + nativePageShouldHandleShiftAndArrows() 4978 + " animateZoom=" + animateZoom 4979 + " extras=" + extras); 4980 } 4981 4982 calcOurContentVisibleRectF(mVisibleContentRect); 4983 if (canvas.isHardwareAccelerated()) { 4984 Rect glRectViewport = mGLViewportEmpty ? null : mGLRectViewport; 4985 Rect viewRectViewport = mGLViewportEmpty ? null : mViewRectViewport; 4986 4987 int functor = nativeGetDrawGLFunction(mNativeClass, glRectViewport, 4988 viewRectViewport, mVisibleContentRect, getScale(), extras); 4989 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4990 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 4991 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 4992 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 4993 } 4994 4995 } else { 4996 DrawFilter df = null; 4997 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4998 df = mZoomFilter; 4999 } else if (animateScroll) { 5000 df = mScrollFilter; 5001 } 5002 canvas.setDrawFilter(df); 5003 // XXX: Revisit splitting content. Right now it causes a 5004 // synchronization problem with layers. 5005 int content = nativeDraw(canvas, mVisibleContentRect, color, 5006 extras, false); 5007 canvas.setDrawFilter(null); 5008 if (!mBlockWebkitViewMessages && content != 0) { 5009 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 5010 } 5011 } 5012 5013 canvas.restoreToCount(saveCount); 5014 if (mSelectingText) { 5015 drawTextSelectionHandles(canvas); 5016 } 5017 5018 if (extras == DRAW_EXTRAS_CURSOR_RING) { 5019 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 5020 mTouchMode = TOUCH_SHORTPRESS_MODE; 5021 } 5022 } 5023 if (mFocusSizeChanged) { 5024 mFocusSizeChanged = false; 5025 // If we are zooming, this will get handled above, when the zoom 5026 // finishes. We also do not need to do this unless the WebTextView 5027 // is showing. With hardware acceleration, the pageSwapCallback() 5028 // updates the WebTextView position in sync with page swapping 5029 if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) { 5030 didUpdateWebTextViewDimensions(ANYWHERE); 5031 } 5032 } 5033 } 5034 5035 private void drawTextSelectionHandles(Canvas canvas) { 5036 if (mSelectHandleLeft == null) { 5037 mSelectHandleLeft = mContext.getResources().getDrawable( 5038 com.android.internal.R.drawable.text_select_handle_left); 5039 } 5040 int[] handles = new int[4]; 5041 getSelectionHandles(handles); 5042 int start_x = contentToViewDimension(handles[0]); 5043 int start_y = contentToViewDimension(handles[1]); 5044 int end_x = contentToViewDimension(handles[2]); 5045 int end_y = contentToViewDimension(handles[3]); 5046 // Magic formula copied from TextView 5047 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 5048 mSelectHandleLeft.setBounds(start_x, start_y, 5049 start_x + mSelectHandleLeft.getIntrinsicWidth(), 5050 start_y + mSelectHandleLeft.getIntrinsicHeight()); 5051 if (mSelectHandleRight == null) { 5052 mSelectHandleRight = mContext.getResources().getDrawable( 5053 com.android.internal.R.drawable.text_select_handle_right); 5054 } 5055 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 5056 mSelectHandleRight.setBounds(end_x, end_y, 5057 end_x + mSelectHandleRight.getIntrinsicWidth(), 5058 end_y + mSelectHandleRight.getIntrinsicHeight()); 5059 mSelectHandleLeft.draw(canvas); 5060 mSelectHandleRight.draw(canvas); 5061 } 5062 5063 /** 5064 * Takes an int[4] array as an output param with the values being 5065 * startX, startY, endX, endY 5066 */ 5067 private void getSelectionHandles(int[] handles) { 5068 handles[0] = mSelectCursorBase.right; 5069 handles[1] = mSelectCursorBase.bottom - 5070 (mSelectCursorBase.height() / 4); 5071 handles[2] = mSelectCursorExtent.left; 5072 handles[3] = mSelectCursorExtent.bottom 5073 - (mSelectCursorExtent.height() / 4); 5074 if (!nativeIsBaseFirst(mNativeClass)) { 5075 int swap = handles[0]; 5076 handles[0] = handles[2]; 5077 handles[2] = swap; 5078 swap = handles[1]; 5079 handles[1] = handles[3]; 5080 handles[3] = swap; 5081 } 5082 } 5083 5084 // draw history 5085 private boolean mDrawHistory = false; 5086 private Picture mHistoryPicture = null; 5087 private int mHistoryWidth = 0; 5088 private int mHistoryHeight = 0; 5089 5090 // Only check the flag, can be called from WebCore thread 5091 boolean drawHistory() { 5092 return mDrawHistory; 5093 } 5094 5095 int getHistoryPictureWidth() { 5096 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 5097 } 5098 5099 // Should only be called in UI thread 5100 void switchOutDrawHistory() { 5101 if (null == mWebViewCore) return; // CallbackProxy may trigger this 5102 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 5103 mDrawHistory = false; 5104 mHistoryPicture = null; 5105 invalidate(); 5106 int oldScrollX = mScrollX; 5107 int oldScrollY = mScrollY; 5108 mScrollX = pinLocX(mScrollX); 5109 mScrollY = pinLocY(mScrollY); 5110 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 5111 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 5112 } else { 5113 sendOurVisibleRect(); 5114 } 5115 } 5116 } 5117 5118 WebViewCore.CursorData cursorData() { 5119 WebViewCore.CursorData result = cursorDataNoPosition(); 5120 Point position = nativeCursorPosition(); 5121 result.mX = position.x; 5122 result.mY = position.y; 5123 return result; 5124 } 5125 5126 WebViewCore.CursorData cursorDataNoPosition() { 5127 WebViewCore.CursorData result = new WebViewCore.CursorData(); 5128 result.mMoveGeneration = nativeMoveGeneration(); 5129 result.mFrame = nativeCursorFramePointer(); 5130 return result; 5131 } 5132 5133 /** 5134 * Delete text from start to end in the focused textfield. If there is no 5135 * focus, or if start == end, silently fail. If start and end are out of 5136 * order, swap them. 5137 * @param start Beginning of selection to delete. 5138 * @param end End of selection to delete. 5139 */ 5140 /* package */ void deleteSelection(int start, int end) { 5141 mTextGeneration++; 5142 WebViewCore.TextSelectionData data 5143 = new WebViewCore.TextSelectionData(start, end, 0); 5144 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 5145 data); 5146 } 5147 5148 /** 5149 * Set the selection to (start, end) in the focused textfield. If start and 5150 * end are out of order, swap them. 5151 * @param start Beginning of selection. 5152 * @param end End of selection. 5153 */ 5154 /* package */ void setSelection(int start, int end) { 5155 if (mWebViewCore != null) { 5156 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 5157 } 5158 } 5159 5160 @Override 5161 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 5162 outAttrs.inputType = EditorInfo.IME_FLAG_NO_FULLSCREEN 5163 | EditorInfo.TYPE_CLASS_TEXT 5164 | EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT 5165 | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE 5166 | EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT 5167 | EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES; 5168 outAttrs.imeOptions = EditorInfo.IME_ACTION_NONE; 5169 5170 if (mInputConnection == null) { 5171 mInputConnection = new WebViewInputConnection(); 5172 } 5173 outAttrs.initialCapsMode = mInputConnection.getCursorCapsMode(InputType.TYPE_CLASS_TEXT); 5174 return mInputConnection; 5175 } 5176 5177 /** 5178 * Called in response to a message from webkit telling us that the soft 5179 * keyboard should be launched. 5180 */ 5181 private void displaySoftKeyboard(boolean isTextView) { 5182 InputMethodManager imm = (InputMethodManager) 5183 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 5184 5185 // bring it back to the default level scale so that user can enter text 5186 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 5187 if (zoom) { 5188 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 5189 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 5190 } 5191 if (isTextView) { 5192 rebuildWebTextView(); 5193 if (inEditingMode()) { 5194 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 5195 if (zoom) { 5196 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 5197 } 5198 return; 5199 } 5200 } 5201 // Used by plugins and contentEditable. 5202 // Also used if the navigation cache is out of date, and 5203 // does not recognize that a textfield is in focus. In that 5204 // case, use WebView as the targeted view. 5205 // see http://b/issue?id=2457459 5206 imm.showSoftInput(this, 0); 5207 } 5208 5209 // Called by WebKit to instruct the UI to hide the keyboard 5210 private void hideSoftKeyboard() { 5211 InputMethodManager imm = InputMethodManager.peekInstance(); 5212 if (imm != null && (imm.isActive(this) 5213 || (inEditingMode() && imm.isActive(mWebTextView)))) { 5214 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 5215 } 5216 } 5217 5218 /* 5219 * This method checks the current focus and cursor and potentially rebuilds 5220 * mWebTextView to have the appropriate properties, such as password, 5221 * multiline, and what text it contains. It also removes it if necessary. 5222 */ 5223 /* package */ void rebuildWebTextView() { 5224 if (!sEnableWebTextView) { 5225 return; // always use WebKit's text entry 5226 } 5227 // If the WebView does not have focus, do nothing until it gains focus. 5228 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 5229 return; 5230 } 5231 boolean alreadyThere = inEditingMode(); 5232 // inEditingMode can only return true if mWebTextView is non-null, 5233 // so we can safely call remove() if (alreadyThere) 5234 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 5235 if (alreadyThere) { 5236 mWebTextView.remove(); 5237 } 5238 return; 5239 } 5240 // At this point, we know we have found an input field, so go ahead 5241 // and create the WebTextView if necessary. 5242 if (mWebTextView == null) { 5243 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 5244 // Initialize our generation number. 5245 mTextGeneration = 0; 5246 } 5247 mWebTextView.updateTextSize(); 5248 updateWebTextViewPosition(); 5249 String text = nativeFocusCandidateText(); 5250 int nodePointer = nativeFocusCandidatePointer(); 5251 // This needs to be called before setType, which may call 5252 // requestFormData, and it needs to have the correct nodePointer. 5253 mWebTextView.setNodePointer(nodePointer); 5254 mWebTextView.setType(nativeFocusCandidateType()); 5255 // Gravity needs to be set after setType 5256 mWebTextView.setGravityForRtl(nativeFocusCandidateIsRtlText()); 5257 if (null == text) { 5258 if (DebugFlags.WEB_VIEW) { 5259 Log.v(LOGTAG, "rebuildWebTextView null == text"); 5260 } 5261 text = ""; 5262 } 5263 mWebTextView.setTextAndKeepSelection(text); 5264 InputMethodManager imm = InputMethodManager.peekInstance(); 5265 if (imm != null && imm.isActive(mWebTextView)) { 5266 imm.restartInput(mWebTextView); 5267 mWebTextView.clearComposingText(); 5268 } 5269 if (isFocused()) { 5270 mWebTextView.requestFocus(); 5271 } 5272 } 5273 5274 private void updateWebTextViewPosition() { 5275 Rect visibleRect = new Rect(); 5276 calcOurContentVisibleRect(visibleRect); 5277 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 5278 // should be in content coordinates. 5279 Rect bounds = nativeFocusCandidateNodeBounds(); 5280 Rect vBox = contentToViewRect(bounds); 5281 offsetByLayerScrollPosition(vBox); 5282 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 5283 if (!Rect.intersects(bounds, visibleRect)) { 5284 revealSelection(); 5285 } 5286 updateWebTextViewPadding(); 5287 } 5288 5289 /** 5290 * Update the padding of mWebTextView based on the native textfield/textarea 5291 */ 5292 void updateWebTextViewPadding() { 5293 Rect paddingRect = nativeFocusCandidatePaddingRect(); 5294 if (paddingRect != null) { 5295 // Use contentToViewDimension since these are the dimensions of 5296 // the padding. 5297 mWebTextView.setPadding( 5298 contentToViewDimension(paddingRect.left), 5299 contentToViewDimension(paddingRect.top), 5300 contentToViewDimension(paddingRect.right), 5301 contentToViewDimension(paddingRect.bottom)); 5302 } 5303 } 5304 5305 /** 5306 * Tell webkit to put the cursor on screen. 5307 */ 5308 /* package */ void revealSelection() { 5309 if (mWebViewCore != null) { 5310 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 5311 } 5312 } 5313 5314 /** 5315 * Called by WebTextView to find saved form data associated with the 5316 * textfield 5317 * @param name Name of the textfield. 5318 * @param nodePointer Pointer to the node of the textfield, so it can be 5319 * compared to the currently focused textfield when the data is 5320 * retrieved. 5321 * @param autoFillable true if WebKit has determined this field is part of 5322 * a form that can be auto filled. 5323 * @param autoComplete true if the attribute "autocomplete" is set to true 5324 * on the textfield. 5325 */ 5326 /* package */ void requestFormData(String name, int nodePointer, 5327 boolean autoFillable, boolean autoComplete) { 5328 if (mWebViewCore.getSettings().getSaveFormData()) { 5329 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 5330 update.arg1 = nodePointer; 5331 RequestFormData updater = new RequestFormData(name, getUrl(), 5332 update, autoFillable, autoComplete); 5333 Thread t = new Thread(updater); 5334 t.start(); 5335 } 5336 } 5337 5338 /** 5339 * Pass a message to find out the <label> associated with the <input> 5340 * identified by nodePointer 5341 * @param framePointer Pointer to the frame containing the <input> node 5342 * @param nodePointer Pointer to the node for which a <label> is desired. 5343 */ 5344 /* package */ void requestLabel(int framePointer, int nodePointer) { 5345 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 5346 nodePointer); 5347 } 5348 5349 /* 5350 * This class requests an Adapter for the WebTextView which shows past 5351 * entries stored in the database. It is a Runnable so that it can be done 5352 * in its own thread, without slowing down the UI. 5353 */ 5354 private class RequestFormData implements Runnable { 5355 private String mName; 5356 private String mUrl; 5357 private Message mUpdateMessage; 5358 private boolean mAutoFillable; 5359 private boolean mAutoComplete; 5360 private WebSettings mWebSettings; 5361 5362 public RequestFormData(String name, String url, Message msg, 5363 boolean autoFillable, boolean autoComplete) { 5364 mName = name; 5365 mUrl = WebTextView.urlForAutoCompleteData(url); 5366 mUpdateMessage = msg; 5367 mAutoFillable = autoFillable; 5368 mAutoComplete = autoComplete; 5369 mWebSettings = getSettings(); 5370 } 5371 5372 @Override 5373 public void run() { 5374 ArrayList<String> pastEntries = new ArrayList<String>(); 5375 5376 if (mAutoFillable) { 5377 // Note that code inside the adapter click handler in WebTextView depends 5378 // on the AutoFill item being at the top of the drop down list. If you change 5379 // the order, make sure to do it there too! 5380 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 5381 pastEntries.add(getResources().getText( 5382 com.android.internal.R.string.autofill_this_form).toString() + 5383 " " + 5384 mAutoFillData.getPreviewString()); 5385 mWebTextView.setAutoFillProfileIsSet(true); 5386 } else { 5387 // There is no autofill profile set up yet, so add an option that 5388 // will invite the user to set their profile up. 5389 pastEntries.add(getResources().getText( 5390 com.android.internal.R.string.setup_autofill).toString()); 5391 mWebTextView.setAutoFillProfileIsSet(false); 5392 } 5393 } 5394 5395 if (mAutoComplete) { 5396 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 5397 } 5398 5399 if (pastEntries.size() > 0) { 5400 AutoCompleteAdapter adapter = new 5401 AutoCompleteAdapter(mContext, pastEntries); 5402 mUpdateMessage.obj = adapter; 5403 mUpdateMessage.sendToTarget(); 5404 } 5405 } 5406 } 5407 5408 /** 5409 * Dump the display tree to "/sdcard/displayTree.txt" 5410 * 5411 * @hide debug only 5412 */ 5413 public void dumpDisplayTree() { 5414 nativeDumpDisplayTree(getUrl()); 5415 } 5416 5417 /** 5418 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 5419 * "/sdcard/domTree.txt" 5420 * 5421 * @hide debug only 5422 */ 5423 public void dumpDomTree(boolean toFile) { 5424 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 5425 } 5426 5427 /** 5428 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 5429 * to "/sdcard/renderTree.txt" 5430 * 5431 * @hide debug only 5432 */ 5433 public void dumpRenderTree(boolean toFile) { 5434 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 5435 } 5436 5437 /** 5438 * Called by DRT on UI thread, need to proxy to WebCore thread. 5439 * 5440 * @hide debug only 5441 */ 5442 public void useMockDeviceOrientation() { 5443 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 5444 } 5445 5446 /** 5447 * Called by DRT on WebCore thread. 5448 * 5449 * @hide debug only 5450 */ 5451 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 5452 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 5453 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 5454 canProvideGamma, gamma); 5455 } 5456 5457 // This is used to determine long press with the center key. Does not 5458 // affect long press with the trackball/touch. 5459 private boolean mGotCenterDown = false; 5460 5461 @Override 5462 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 5463 if (mBlockWebkitViewMessages) { 5464 return false; 5465 } 5466 // send complex characters to webkit for use by JS and plugins 5467 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 5468 // pass the key to DOM 5469 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5470 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5471 // return true as DOM handles the key 5472 return true; 5473 } 5474 return false; 5475 } 5476 5477 private boolean isEnterActionKey(int keyCode) { 5478 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 5479 || keyCode == KeyEvent.KEYCODE_ENTER 5480 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 5481 } 5482 5483 @Override 5484 public boolean onKeyDown(int keyCode, KeyEvent event) { 5485 if (DebugFlags.WEB_VIEW) { 5486 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 5487 + "keyCode=" + keyCode 5488 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5489 } 5490 if (mBlockWebkitViewMessages) { 5491 return false; 5492 } 5493 5494 // don't implement accelerator keys here; defer to host application 5495 if (event.isCtrlPressed()) { 5496 return false; 5497 } 5498 5499 if (mNativeClass == 0) { 5500 return false; 5501 } 5502 5503 // do this hack up front, so it always works, regardless of touch-mode 5504 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 5505 mAutoRedraw = !mAutoRedraw; 5506 if (mAutoRedraw) { 5507 invalidate(); 5508 } 5509 return true; 5510 } 5511 5512 // Bubble up the key event if 5513 // 1. it is a system key; or 5514 // 2. the host application wants to handle it; 5515 if (event.isSystem() 5516 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5517 return false; 5518 } 5519 5520 // accessibility support 5521 if (accessibilityScriptInjected()) { 5522 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5523 // if an accessibility script is injected we delegate to it the key handling. 5524 // this script is a screen reader which is a fully fledged solution for blind 5525 // users to navigate in and interact with web pages. 5526 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5527 return true; 5528 } else { 5529 // Clean up if accessibility was disabled after loading the current URL. 5530 mAccessibilityScriptInjected = false; 5531 } 5532 } else if (mAccessibilityInjector != null) { 5533 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5534 if (mAccessibilityInjector.onKeyEvent(event)) { 5535 // if an accessibility injector is present (no JavaScript enabled or the site 5536 // opts out injecting our JavaScript screen reader) we let it decide whether 5537 // to act on and consume the event. 5538 return true; 5539 } 5540 } else { 5541 // Clean up if accessibility was disabled after loading the current URL. 5542 mAccessibilityInjector = null; 5543 } 5544 } 5545 5546 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 5547 if (event.hasNoModifiers()) { 5548 pageUp(false); 5549 return true; 5550 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5551 pageUp(true); 5552 return true; 5553 } 5554 } 5555 5556 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 5557 if (event.hasNoModifiers()) { 5558 pageDown(false); 5559 return true; 5560 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5561 pageDown(true); 5562 return true; 5563 } 5564 } 5565 5566 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 5567 pageUp(true); 5568 return true; 5569 } 5570 5571 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 5572 pageDown(true); 5573 return true; 5574 } 5575 5576 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5577 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5578 switchOutDrawHistory(); 5579 if (nativePageShouldHandleShiftAndArrows()) { 5580 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 5581 return true; 5582 } 5583 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5584 switch (keyCode) { 5585 case KeyEvent.KEYCODE_DPAD_UP: 5586 pageUp(true); 5587 return true; 5588 case KeyEvent.KEYCODE_DPAD_DOWN: 5589 pageDown(true); 5590 return true; 5591 case KeyEvent.KEYCODE_DPAD_LEFT: 5592 nativeClearCursor(); // start next trackball movement from page edge 5593 return pinScrollTo(0, mScrollY, true, 0); 5594 case KeyEvent.KEYCODE_DPAD_RIGHT: 5595 nativeClearCursor(); // start next trackball movement from page edge 5596 return pinScrollTo(mContentWidth, mScrollY, true, 0); 5597 } 5598 } 5599 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 5600 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 5601 return true; 5602 } 5603 // Bubble up the key event as WebView doesn't handle it 5604 return false; 5605 } 5606 5607 if (isEnterActionKey(keyCode)) { 5608 switchOutDrawHistory(); 5609 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 5610 || nativeCursorWantsKeyEvents(); 5611 if (event.getRepeatCount() == 0) { 5612 if (mSelectingText) { 5613 return true; // discard press if copy in progress 5614 } 5615 mGotCenterDown = true; 5616 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5617 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 5618 if (!wantsKeyEvents) return true; 5619 } 5620 // Bubble up the key event as WebView doesn't handle it 5621 if (!wantsKeyEvents) return false; 5622 } 5623 5624 if (getSettings().getNavDump()) { 5625 switch (keyCode) { 5626 case KeyEvent.KEYCODE_4: 5627 dumpDisplayTree(); 5628 break; 5629 case KeyEvent.KEYCODE_5: 5630 case KeyEvent.KEYCODE_6: 5631 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5632 break; 5633 case KeyEvent.KEYCODE_7: 5634 case KeyEvent.KEYCODE_8: 5635 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5636 break; 5637 } 5638 } 5639 5640 if (nativeCursorIsTextInput()) { 5641 // This message will put the node in focus, for the DOM's notion 5642 // of focus. 5643 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5644 nativeCursorNodePointer()); 5645 // This will bring up the WebTextView and put it in focus, for 5646 // our view system's notion of focus 5647 rebuildWebTextView(); 5648 // Now we need to pass the event to it 5649 if (inEditingMode()) { 5650 mWebTextView.setDefaultSelection(); 5651 return mWebTextView.dispatchKeyEvent(event); 5652 } 5653 } else if (nativeHasFocusNode()) { 5654 // In this case, the cursor is not on a text input, but the focus 5655 // might be. Check it, and if so, hand over to the WebTextView. 5656 rebuildWebTextView(); 5657 if (inEditingMode()) { 5658 mWebTextView.setDefaultSelection(); 5659 return mWebTextView.dispatchKeyEvent(event); 5660 } 5661 } 5662 5663 // TODO: should we pass all the keys to DOM or check the meta tag 5664 if (nativeCursorWantsKeyEvents() || true) { 5665 // pass the key to DOM 5666 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5667 // return true as DOM handles the key 5668 return true; 5669 } 5670 5671 // Bubble up the key event as WebView doesn't handle it 5672 return false; 5673 } 5674 5675 @Override 5676 public boolean onKeyUp(int keyCode, KeyEvent event) { 5677 if (DebugFlags.WEB_VIEW) { 5678 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5679 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5680 } 5681 if (mBlockWebkitViewMessages) { 5682 return false; 5683 } 5684 5685 if (mNativeClass == 0) { 5686 return false; 5687 } 5688 5689 // special CALL handling when cursor node's href is "tel:XXX" 5690 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5691 String text = nativeCursorText(); 5692 if (!nativeCursorIsTextInput() && text != null 5693 && text.startsWith(SCHEME_TEL)) { 5694 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5695 getContext().startActivity(intent); 5696 return true; 5697 } 5698 } 5699 5700 // Bubble up the key event if 5701 // 1. it is a system key; or 5702 // 2. the host application wants to handle it; 5703 if (event.isSystem() 5704 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5705 return false; 5706 } 5707 5708 // accessibility support 5709 if (accessibilityScriptInjected()) { 5710 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5711 // if an accessibility script is injected we delegate to it the key handling. 5712 // this script is a screen reader which is a fully fledged solution for blind 5713 // users to navigate in and interact with web pages. 5714 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5715 return true; 5716 } else { 5717 // Clean up if accessibility was disabled after loading the current URL. 5718 mAccessibilityScriptInjected = false; 5719 } 5720 } else if (mAccessibilityInjector != null) { 5721 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5722 if (mAccessibilityInjector.onKeyEvent(event)) { 5723 // if an accessibility injector is present (no JavaScript enabled or the site 5724 // opts out injecting our JavaScript screen reader) we let it decide whether to 5725 // act on and consume the event. 5726 return true; 5727 } 5728 } else { 5729 // Clean up if accessibility was disabled after loading the current URL. 5730 mAccessibilityInjector = null; 5731 } 5732 } 5733 5734 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5735 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5736 if (nativePageShouldHandleShiftAndArrows()) { 5737 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5738 return true; 5739 } 5740 // always handle the navigation keys in the UI thread 5741 // Bubble up the key event as WebView doesn't handle it 5742 return false; 5743 } 5744 5745 if (isEnterActionKey(keyCode)) { 5746 // remove the long press message first 5747 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5748 mGotCenterDown = false; 5749 5750 if (mSelectingText) { 5751 copySelection(); 5752 selectionDone(); 5753 return true; // discard press if copy in progress 5754 } 5755 5756 if (!sDisableNavcache) { 5757 // perform the single click 5758 Rect visibleRect = sendOurVisibleRect(); 5759 // Note that sendOurVisibleRect calls viewToContent, so the 5760 // coordinates should be in content coordinates. 5761 if (!nativeCursorIntersects(visibleRect)) { 5762 return false; 5763 } 5764 WebViewCore.CursorData data = cursorData(); 5765 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5766 playSoundEffect(SoundEffectConstants.CLICK); 5767 if (nativeCursorIsTextInput()) { 5768 rebuildWebTextView(); 5769 centerKeyPressOnTextField(); 5770 if (inEditingMode()) { 5771 mWebTextView.setDefaultSelection(); 5772 } 5773 return true; 5774 } 5775 clearTextEntry(); 5776 nativeShowCursorTimed(); 5777 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5778 return true; 5779 } 5780 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5781 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5782 nativeCursorNodePointer()); 5783 return true; 5784 } 5785 } 5786 } 5787 5788 // TODO: should we pass all the keys to DOM or check the meta tag 5789 if (nativeCursorWantsKeyEvents() || true) { 5790 // pass the key to DOM 5791 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5792 // return true as DOM handles the key 5793 return true; 5794 } 5795 5796 // Bubble up the key event as WebView doesn't handle it 5797 return false; 5798 } 5799 5800 private boolean startSelectActionMode() { 5801 mSelectCallback = new SelectActionModeCallback(); 5802 mSelectCallback.setWebView(this); 5803 if (startActionMode(mSelectCallback) == null) { 5804 // There is no ActionMode, so do not allow the user to modify a 5805 // selection. 5806 selectionDone(); 5807 return false; 5808 } 5809 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 5810 return true; 5811 } 5812 5813 private void syncSelectionCursors() { 5814 mSelectCursorBaseLayerId = 5815 nativeGetHandleLayerId(mNativeClass, HANDLE_ID_BASE, mSelectCursorBase); 5816 mSelectCursorExtentLayerId = 5817 nativeGetHandleLayerId(mNativeClass, HANDLE_ID_EXTENT, mSelectCursorExtent); 5818 } 5819 5820 private boolean setupWebkitSelect() { 5821 syncSelectionCursors(); 5822 if (!startSelectActionMode()) { 5823 selectionDone(); 5824 return false; 5825 } 5826 mSelectingText = true; 5827 mTouchMode = TOUCH_DRAG_MODE; 5828 return true; 5829 } 5830 5831 private void updateWebkitSelection() { 5832 int[] handles = null; 5833 if (mSelectingText) { 5834 handles = new int[4]; 5835 handles[0] = mSelectCursorBase.centerX(); 5836 handles[1] = mSelectCursorBase.centerY(); 5837 handles[2] = mSelectCursorExtent.centerX(); 5838 handles[3] = mSelectCursorExtent.centerY(); 5839 } else { 5840 nativeSetTextSelection(mNativeClass, 0); 5841 } 5842 mWebViewCore.removeMessages(EventHub.SELECT_TEXT); 5843 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.SELECT_TEXT, handles); 5844 } 5845 5846 /** 5847 * Use this method to put the WebView into text selection mode. 5848 * Do not rely on this functionality; it will be deprecated in the future. 5849 * @deprecated This method is now obsolete. 5850 */ 5851 @Deprecated 5852 public void emulateShiftHeld() { 5853 checkThread(); 5854 } 5855 5856 /** 5857 * Select all of the text in this WebView. 5858 * 5859 * @hide This is an implementation detail. 5860 */ 5861 public void selectAll() { 5862 mWebViewCore.sendMessage(EventHub.SELECT_ALL); 5863 } 5864 5865 /** 5866 * Called when the selection has been removed. 5867 */ 5868 void selectionDone() { 5869 if (mSelectingText) { 5870 mSelectingText = false; 5871 // finish is idempotent, so this is fine even if selectionDone was 5872 // called by mSelectCallback.onDestroyActionMode 5873 mSelectCallback.finish(); 5874 mSelectCallback = null; 5875 updateWebkitSelection(); 5876 invalidate(); // redraw without selection 5877 mAutoScrollX = 0; 5878 mAutoScrollY = 0; 5879 mSentAutoScrollMessage = false; 5880 } 5881 } 5882 5883 /** 5884 * Copy the selection to the clipboard 5885 * 5886 * @hide This is an implementation detail. 5887 */ 5888 public boolean copySelection() { 5889 boolean copiedSomething = false; 5890 String selection = getSelection(); 5891 if (selection != null && selection != "") { 5892 if (DebugFlags.WEB_VIEW) { 5893 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5894 } 5895 Toast.makeText(mContext 5896 , com.android.internal.R.string.text_copied 5897 , Toast.LENGTH_SHORT).show(); 5898 copiedSomething = true; 5899 ClipboardManager cm = (ClipboardManager)getContext() 5900 .getSystemService(Context.CLIPBOARD_SERVICE); 5901 cm.setText(selection); 5902 int[] handles = new int[4]; 5903 getSelectionHandles(handles); 5904 mWebViewCore.sendMessage(EventHub.COPY_TEXT, handles); 5905 } 5906 invalidate(); // remove selection region and pointer 5907 return copiedSomething; 5908 } 5909 5910 /** 5911 * Cut the selected text into the clipboard 5912 * 5913 * @hide This is an implementation detail 5914 */ 5915 public void cutSelection() { 5916 copySelection(); 5917 int[] handles = new int[4]; 5918 getSelectionHandles(handles); 5919 mWebViewCore.sendMessage(EventHub.DELETE_TEXT, handles); 5920 } 5921 5922 /** 5923 * Paste text from the clipboard to the cursor position. 5924 * 5925 * @hide This is an implementation detail 5926 */ 5927 public void pasteFromClipboard() { 5928 ClipboardManager cm = (ClipboardManager)getContext() 5929 .getSystemService(Context.CLIPBOARD_SERVICE); 5930 ClipData clipData = cm.getPrimaryClip(); 5931 if (clipData != null) { 5932 ClipData.Item clipItem = clipData.getItemAt(0); 5933 CharSequence pasteText = clipItem.getText(); 5934 if (pasteText != null) { 5935 int[] handles = new int[4]; 5936 getSelectionHandles(handles); 5937 mWebViewCore.sendMessage(EventHub.DELETE_TEXT, handles); 5938 mWebViewCore.sendMessage(EventHub.INSERT_TEXT, 5939 pasteText.toString()); 5940 } 5941 } 5942 } 5943 5944 /** 5945 * @hide This is an implementation detail. 5946 */ 5947 public SearchBox getSearchBox() { 5948 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5949 return null; 5950 } 5951 return mWebViewCore.getBrowserFrame().getSearchBox(); 5952 } 5953 5954 /** 5955 * Returns the currently highlighted text as a string. 5956 */ 5957 String getSelection() { 5958 if (mNativeClass == 0) return ""; 5959 return nativeGetSelection(); 5960 } 5961 5962 @Override 5963 protected void onAttachedToWindow() { 5964 super.onAttachedToWindow(); 5965 if (hasWindowFocus()) setActive(true); 5966 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5967 if (mGlobalLayoutListener == null) { 5968 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5969 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5970 } 5971 if (mScrollChangedListener == null) { 5972 mScrollChangedListener = new InnerScrollChangedListener(); 5973 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5974 } 5975 5976 addAccessibilityApisToJavaScript(); 5977 5978 mTouchEventQueue.reset(); 5979 } 5980 5981 @Override 5982 protected void onDetachedFromWindow() { 5983 clearHelpers(); 5984 mZoomManager.dismissZoomPicker(); 5985 if (hasWindowFocus()) setActive(false); 5986 5987 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5988 if (mGlobalLayoutListener != null) { 5989 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5990 mGlobalLayoutListener = null; 5991 } 5992 if (mScrollChangedListener != null) { 5993 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5994 mScrollChangedListener = null; 5995 } 5996 5997 removeAccessibilityApisFromJavaScript(); 5998 5999 super.onDetachedFromWindow(); 6000 } 6001 6002 @Override 6003 protected void onVisibilityChanged(View changedView, int visibility) { 6004 super.onVisibilityChanged(changedView, visibility); 6005 // The zoomManager may be null if the webview is created from XML that 6006 // specifies the view's visibility param as not visible (see http://b/2794841) 6007 if (visibility != View.VISIBLE && mZoomManager != null) { 6008 mZoomManager.dismissZoomPicker(); 6009 } 6010 updateDrawingState(); 6011 } 6012 6013 /** 6014 * @deprecated WebView no longer needs to implement 6015 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 6016 */ 6017 @Override 6018 // Cannot add @hide as this can always be accessed via the interface. 6019 @Deprecated 6020 public void onChildViewAdded(View parent, View child) {} 6021 6022 /** 6023 * @deprecated WebView no longer needs to implement 6024 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 6025 */ 6026 @Override 6027 // Cannot add @hide as this can always be accessed via the interface. 6028 @Deprecated 6029 public void onChildViewRemoved(View p, View child) {} 6030 6031 /** 6032 * @deprecated WebView should not have implemented 6033 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 6034 */ 6035 @Override 6036 // Cannot add @hide as this can always be accessed via the interface. 6037 @Deprecated 6038 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 6039 } 6040 6041 void setActive(boolean active) { 6042 if (active) { 6043 if (hasFocus()) { 6044 // If our window regained focus, and we have focus, then begin 6045 // drawing the cursor ring 6046 mDrawCursorRing = !inEditingMode(); 6047 setFocusControllerActive(true); 6048 } else { 6049 mDrawCursorRing = false; 6050 if (!inEditingMode()) { 6051 // If our window gained focus, but we do not have it, do not 6052 // draw the cursor ring. 6053 setFocusControllerActive(false); 6054 } 6055 // We do not call recordButtons here because we assume 6056 // that when we lost focus, or window focus, it got called with 6057 // false for the first parameter 6058 } 6059 } else { 6060 if (!mZoomManager.isZoomPickerVisible()) { 6061 /* 6062 * The external zoom controls come in their own window, so our 6063 * window loses focus. Our policy is to not draw the cursor ring 6064 * if our window is not focused, but this is an exception since 6065 * the user can still navigate the web page with the zoom 6066 * controls showing. 6067 */ 6068 mDrawCursorRing = false; 6069 } 6070 mKeysPressed.clear(); 6071 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6072 mTouchMode = TOUCH_DONE_MODE; 6073 setFocusControllerActive(false); 6074 } 6075 invalidate(); 6076 } 6077 6078 // To avoid drawing the cursor ring, and remove the TextView when our window 6079 // loses focus. 6080 @Override 6081 public void onWindowFocusChanged(boolean hasWindowFocus) { 6082 setActive(hasWindowFocus); 6083 if (hasWindowFocus) { 6084 JWebCoreJavaBridge.setActiveWebView(this); 6085 if (mPictureUpdatePausedForFocusChange) { 6086 WebViewCore.resumeUpdatePicture(mWebViewCore); 6087 mPictureUpdatePausedForFocusChange = false; 6088 } 6089 } else { 6090 JWebCoreJavaBridge.removeActiveWebView(this); 6091 final WebSettings settings = getSettings(); 6092 if (settings != null && settings.enableSmoothTransition() && 6093 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 6094 WebViewCore.pauseUpdatePicture(mWebViewCore); 6095 mPictureUpdatePausedForFocusChange = true; 6096 } 6097 } 6098 super.onWindowFocusChanged(hasWindowFocus); 6099 } 6100 6101 /* 6102 * Pass a message to WebCore Thread, telling the WebCore::Page's 6103 * FocusController to be "inactive" so that it will 6104 * not draw the blinking cursor. It gets set to "active" to draw the cursor 6105 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 6106 */ 6107 /* package */ void setFocusControllerActive(boolean active) { 6108 if (mWebViewCore == null) return; 6109 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 6110 // Need to send this message after the document regains focus. 6111 if (active && mListBoxMessage != null) { 6112 mWebViewCore.sendMessage(mListBoxMessage); 6113 mListBoxMessage = null; 6114 } 6115 } 6116 6117 @Override 6118 protected void onFocusChanged(boolean focused, int direction, 6119 Rect previouslyFocusedRect) { 6120 if (DebugFlags.WEB_VIEW) { 6121 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 6122 } 6123 if (focused) { 6124 // When we regain focus, if we have window focus, resume drawing 6125 // the cursor ring 6126 if (hasWindowFocus()) { 6127 mDrawCursorRing = !inEditingMode(); 6128 setFocusControllerActive(true); 6129 //} else { 6130 // The WebView has gained focus while we do not have 6131 // windowfocus. When our window lost focus, we should have 6132 // called recordButtons(false...) 6133 } 6134 } else { 6135 // When we lost focus, unless focus went to the TextView (which is 6136 // true if we are in editing mode), stop drawing the cursor ring. 6137 mDrawCursorRing = false; 6138 if (!inEditingMode()) { 6139 setFocusControllerActive(false); 6140 } 6141 mKeysPressed.clear(); 6142 } 6143 6144 super.onFocusChanged(focused, direction, previouslyFocusedRect); 6145 } 6146 6147 void setGLRectViewport() { 6148 // Use the getGlobalVisibleRect() to get the intersection among the parents 6149 // visible == false means we're clipped - send a null rect down to indicate that 6150 // we should not draw 6151 boolean visible = getGlobalVisibleRect(mGLRectViewport); 6152 if (visible) { 6153 // Then need to invert the Y axis, just for GL 6154 View rootView = getRootView(); 6155 int rootViewHeight = rootView.getHeight(); 6156 mViewRectViewport.set(mGLRectViewport); 6157 int savedWebViewBottom = mGLRectViewport.bottom; 6158 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 6159 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 6160 mGLViewportEmpty = false; 6161 } else { 6162 mGLViewportEmpty = true; 6163 } 6164 calcOurContentVisibleRectF(mVisibleContentRect); 6165 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 6166 mGLViewportEmpty ? null : mViewRectViewport, 6167 mVisibleContentRect, getScale()); 6168 } 6169 6170 /** 6171 * @hide 6172 */ 6173 @Override 6174 protected boolean setFrame(int left, int top, int right, int bottom) { 6175 boolean changed = super.setFrame(left, top, right, bottom); 6176 if (!changed && mHeightCanMeasure) { 6177 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 6178 // in WebViewCore after we get the first layout. We do call 6179 // requestLayout() when we get contentSizeChanged(). But the View 6180 // system won't call onSizeChanged if the dimension is not changed. 6181 // In this case, we need to call sendViewSizeZoom() explicitly to 6182 // notify the WebKit about the new dimensions. 6183 sendViewSizeZoom(false); 6184 } 6185 setGLRectViewport(); 6186 return changed; 6187 } 6188 6189 @Override 6190 protected void onSizeChanged(int w, int h, int ow, int oh) { 6191 super.onSizeChanged(w, h, ow, oh); 6192 6193 // adjust the max viewport width depending on the view dimensions. This 6194 // is to ensure the scaling is not going insane. So do not shrink it if 6195 // the view size is temporarily smaller, e.g. when soft keyboard is up. 6196 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 6197 if (newMaxViewportWidth > sMaxViewportWidth) { 6198 sMaxViewportWidth = newMaxViewportWidth; 6199 } 6200 6201 mZoomManager.onSizeChanged(w, h, ow, oh); 6202 6203 if (mLoadedPicture != null && mDelaySetPicture == null) { 6204 // Size changes normally result in a new picture 6205 // Re-set the loaded picture to simulate that 6206 // However, do not update the base layer as that hasn't changed 6207 setNewPicture(mLoadedPicture, false); 6208 } 6209 } 6210 6211 @Override 6212 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 6213 super.onScrollChanged(l, t, oldl, oldt); 6214 if (!mInOverScrollMode) { 6215 sendOurVisibleRect(); 6216 // update WebKit if visible title bar height changed. The logic is same 6217 // as getVisibleTitleHeightImpl. 6218 int titleHeight = getTitleHeight(); 6219 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 6220 sendViewSizeZoom(false); 6221 } 6222 } 6223 } 6224 6225 @Override 6226 public boolean dispatchKeyEvent(KeyEvent event) { 6227 switch (event.getAction()) { 6228 case KeyEvent.ACTION_DOWN: 6229 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 6230 break; 6231 case KeyEvent.ACTION_MULTIPLE: 6232 // Always accept the action. 6233 break; 6234 case KeyEvent.ACTION_UP: 6235 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 6236 if (location == -1) { 6237 // We did not receive the key down for this key, so do not 6238 // handle the key up. 6239 return false; 6240 } else { 6241 // We did receive the key down. Handle the key up, and 6242 // remove it from our pressed keys. 6243 mKeysPressed.remove(location); 6244 } 6245 break; 6246 default: 6247 // Accept the action. This should not happen, unless a new 6248 // action is added to KeyEvent. 6249 break; 6250 } 6251 if (inEditingMode() && mWebTextView.isFocused()) { 6252 // Ensure that the WebTextView gets the event, even if it does 6253 // not currently have a bounds. 6254 return mWebTextView.dispatchKeyEvent(event); 6255 } else { 6256 return super.dispatchKeyEvent(event); 6257 } 6258 } 6259 6260 /* 6261 * Here is the snap align logic: 6262 * 1. If it starts nearly horizontally or vertically, snap align; 6263 * 2. If there is a dramitic direction change, let it go; 6264 * 6265 * Adjustable parameters. Angle is the radians on a unit circle, limited 6266 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 6267 */ 6268 private static final float HSLOPE_TO_START_SNAP = .25f; 6269 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 6270 private static final float VSLOPE_TO_START_SNAP = 1.25f; 6271 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 6272 /* 6273 * These values are used to influence the average angle when entering 6274 * snap mode. If is is the first movement entering snap, we set the average 6275 * to the appropriate ideal. If the user is entering into snap after the 6276 * first movement, then we average the average angle with these values. 6277 */ 6278 private static final float ANGLE_VERT = 2f; 6279 private static final float ANGLE_HORIZ = 0f; 6280 /* 6281 * The modified moving average weight. 6282 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 6283 */ 6284 private static final float MMA_WEIGHT_N = 5; 6285 6286 private boolean hitFocusedPlugin(int contentX, int contentY) { 6287 if (DebugFlags.WEB_VIEW) { 6288 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 6289 Rect r = nativeFocusNodeBounds(); 6290 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 6291 + ", " + r.right + ", " + r.bottom + ")"); 6292 } 6293 return nativeFocusIsPlugin() 6294 && nativeFocusNodeBounds().contains(contentX, contentY); 6295 } 6296 6297 private boolean shouldForwardTouchEvent() { 6298 if (mFullScreenHolder != null) return true; 6299 if (mBlockWebkitViewMessages) return false; 6300 return mForwardTouchEvents 6301 && !mSelectingText 6302 && mPreventDefault != PREVENT_DEFAULT_IGNORE 6303 && mPreventDefault != PREVENT_DEFAULT_NO; 6304 } 6305 6306 private boolean inFullScreenMode() { 6307 return mFullScreenHolder != null; 6308 } 6309 6310 private void dismissFullScreenMode() { 6311 if (inFullScreenMode()) { 6312 mFullScreenHolder.hide(); 6313 mFullScreenHolder = null; 6314 invalidate(); 6315 } 6316 } 6317 6318 void onPinchToZoomAnimationStart() { 6319 // cancel the single touch handling 6320 cancelTouch(); 6321 onZoomAnimationStart(); 6322 } 6323 6324 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 6325 onZoomAnimationEnd(); 6326 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 6327 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 6328 // as it may trigger the unwanted fling. 6329 mTouchMode = TOUCH_PINCH_DRAG; 6330 mConfirmMove = true; 6331 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 6332 } 6333 6334 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 6335 // layer is found. 6336 private void startScrollingLayer(float x, float y) { 6337 int contentX = viewToContentX((int) x + mScrollX); 6338 int contentY = viewToContentY((int) y + mScrollY); 6339 mCurrentScrollingLayerId = nativeScrollableLayer(contentX, contentY, 6340 mScrollingLayerRect, mScrollingLayerBounds); 6341 if (mCurrentScrollingLayerId != 0) { 6342 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6343 } 6344 } 6345 6346 // 1/(density * density) used to compute the distance between points. 6347 // Computed in init(). 6348 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 6349 6350 // The distance between two points reported in onTouchEvent scaled by the 6351 // density of the screen. 6352 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 6353 6354 @Override 6355 public boolean onHoverEvent(MotionEvent event) { 6356 if (mNativeClass == 0) { 6357 return false; 6358 } 6359 WebViewCore.CursorData data = cursorDataNoPosition(); 6360 data.mX = viewToContentX((int) event.getX() + mScrollX); 6361 data.mY = viewToContentY((int) event.getY() + mScrollY); 6362 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 6363 return true; 6364 } 6365 6366 @Override 6367 public boolean onTouchEvent(MotionEvent ev) { 6368 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 6369 return false; 6370 } 6371 6372 if (DebugFlags.WEB_VIEW) { 6373 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 6374 + " mTouchMode=" + mTouchMode 6375 + " numPointers=" + ev.getPointerCount()); 6376 } 6377 6378 // If WebKit wasn't interested in this multitouch gesture, enqueue 6379 // the event for handling directly rather than making the round trip 6380 // to WebKit and back. 6381 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 6382 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 6383 } else { 6384 mTouchEventQueue.enqueueTouchEvent(ev); 6385 } 6386 6387 // Since all events are handled asynchronously, we always want the gesture stream. 6388 return true; 6389 } 6390 6391 private float calculateDragAngle(int dx, int dy) { 6392 dx = Math.abs(dx); 6393 dy = Math.abs(dy); 6394 return (float) Math.atan2(dy, dx); 6395 } 6396 6397 /* 6398 * Common code for single touch and multi-touch. 6399 * (x, y) denotes current focus point, which is the touch point for single touch 6400 * and the middle point for multi-touch. 6401 */ 6402 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 6403 long eventTime = ev.getEventTime(); 6404 6405 // Due to the touch screen edge effect, a touch closer to the edge 6406 // always snapped to the edge. As getViewWidth() can be different from 6407 // getWidth() due to the scrollbar, adjusting the point to match 6408 // getViewWidth(). Same applied to the height. 6409 x = Math.min(x, getViewWidth() - 1); 6410 y = Math.min(y, getViewHeightWithTitle() - 1); 6411 6412 int deltaX = mLastTouchX - x; 6413 int deltaY = mLastTouchY - y; 6414 int contentX = viewToContentX(x + mScrollX); 6415 int contentY = viewToContentY(y + mScrollY); 6416 6417 switch (action) { 6418 case MotionEvent.ACTION_DOWN: { 6419 mPreventDefault = PREVENT_DEFAULT_NO; 6420 mConfirmMove = false; 6421 mInitialHitTestResult = null; 6422 if (!mScroller.isFinished()) { 6423 // stop the current scroll animation, but if this is 6424 // the start of a fling, allow it to add to the current 6425 // fling's velocity 6426 mScroller.abortAnimation(); 6427 mTouchMode = TOUCH_DRAG_START_MODE; 6428 mConfirmMove = true; 6429 nativeSetIsScrolling(false); 6430 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 6431 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 6432 if (sDisableNavcache) { 6433 removeTouchHighlight(); 6434 } 6435 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 6436 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 6437 } else { 6438 // commit the short press action for the previous tap 6439 doShortPress(); 6440 mTouchMode = TOUCH_INIT_MODE; 6441 mDeferTouchProcess = !mBlockWebkitViewMessages 6442 && (!inFullScreenMode() && mForwardTouchEvents) 6443 ? hitFocusedPlugin(contentX, contentY) 6444 : false; 6445 } 6446 } else { // the normal case 6447 mTouchMode = TOUCH_INIT_MODE; 6448 mDeferTouchProcess = !mBlockWebkitViewMessages 6449 && (!inFullScreenMode() && mForwardTouchEvents) 6450 ? hitFocusedPlugin(contentX, contentY) 6451 : false; 6452 if (!mBlockWebkitViewMessages) { 6453 mWebViewCore.sendMessage( 6454 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 6455 } 6456 if (sDisableNavcache) { 6457 TouchHighlightData data = new TouchHighlightData(); 6458 data.mX = contentX; 6459 data.mY = contentY; 6460 data.mNativeLayerRect = new Rect(); 6461 data.mNativeLayer = nativeScrollableLayer( 6462 contentX, contentY, data.mNativeLayerRect, null); 6463 data.mSlop = viewToContentDimension(mNavSlop); 6464 mTouchHighlightRegion.setEmpty(); 6465 if (!mBlockWebkitViewMessages) { 6466 mTouchHighlightRequested = System.currentTimeMillis(); 6467 mWebViewCore.sendMessageAtFrontOfQueue( 6468 EventHub.HIT_TEST, data); 6469 } 6470 if (DEBUG_TOUCH_HIGHLIGHT) { 6471 if (getSettings().getNavDump()) { 6472 mTouchHighlightX = x + mScrollX; 6473 mTouchHighlightY = y + mScrollY; 6474 mPrivateHandler.postDelayed(new Runnable() { 6475 @Override 6476 public void run() { 6477 mTouchHighlightX = mTouchHighlightY = 0; 6478 invalidate(); 6479 } 6480 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 6481 } 6482 } 6483 } 6484 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 6485 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 6486 (eventTime - mLastTouchUpTime), eventTime); 6487 } 6488 mSelectionStarted = false; 6489 if (mSelectingText && mSelectHandleLeft != null 6490 && mSelectHandleRight != null) { 6491 int shiftedY = y - getTitleHeight() + mScrollY; 6492 int shiftedX = x + mScrollX; 6493 if (mSelectHandleLeft.getBounds() 6494 .contains(shiftedX, shiftedY)) { 6495 mSelectionStarted = true; 6496 mSelectDraggingCursor = mSelectCursorBase; 6497 } else if (mSelectHandleRight.getBounds() 6498 .contains(shiftedX, shiftedY)) { 6499 mSelectionStarted = true; 6500 mSelectDraggingCursor = mSelectCursorExtent; 6501 } 6502 if (mSelectDraggingCursor != null) { 6503 mSelectDraggingOffset.set( 6504 mSelectDraggingCursor.left - contentX, 6505 mSelectDraggingCursor.top - contentY); 6506 } 6507 if (DebugFlags.WEB_VIEW) { 6508 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 6509 } 6510 } 6511 } 6512 // Trigger the link 6513 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 6514 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 6515 mPrivateHandler.sendEmptyMessageDelayed( 6516 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 6517 mPrivateHandler.sendEmptyMessageDelayed( 6518 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 6519 if (inFullScreenMode() || mDeferTouchProcess) { 6520 mPreventDefault = PREVENT_DEFAULT_YES; 6521 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 6522 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 6523 } else { 6524 mPreventDefault = PREVENT_DEFAULT_NO; 6525 } 6526 // pass the touch events from UI thread to WebCore thread 6527 if (shouldForwardTouchEvent()) { 6528 TouchEventData ted = new TouchEventData(); 6529 ted.mAction = action; 6530 ted.mIds = new int[1]; 6531 ted.mIds[0] = ev.getPointerId(0); 6532 ted.mPoints = new Point[1]; 6533 ted.mPoints[0] = new Point(contentX, contentY); 6534 ted.mPointsInView = new Point[1]; 6535 ted.mPointsInView[0] = new Point(x, y); 6536 ted.mMetaState = ev.getMetaState(); 6537 ted.mReprocess = mDeferTouchProcess; 6538 ted.mNativeLayer = nativeScrollableLayer( 6539 contentX, contentY, ted.mNativeLayerRect, null); 6540 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6541 mTouchEventQueue.preQueueTouchEventData(ted); 6542 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6543 if (mDeferTouchProcess) { 6544 // still needs to set them for compute deltaX/Y 6545 mLastTouchX = x; 6546 mLastTouchY = y; 6547 break; 6548 } 6549 if (!inFullScreenMode()) { 6550 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 6551 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6552 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6553 action, 0), TAP_TIMEOUT); 6554 } 6555 } 6556 } 6557 startTouch(x, y, eventTime); 6558 break; 6559 } 6560 case MotionEvent.ACTION_MOVE: { 6561 boolean firstMove = false; 6562 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 6563 >= mTouchSlopSquare) { 6564 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6565 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6566 mConfirmMove = true; 6567 firstMove = true; 6568 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6569 mTouchMode = TOUCH_INIT_MODE; 6570 } 6571 if (sDisableNavcache) { 6572 removeTouchHighlight(); 6573 } 6574 } 6575 if (mSelectingText && mSelectionStarted) { 6576 if (DebugFlags.WEB_VIEW) { 6577 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 6578 } 6579 ViewParent parent = getParent(); 6580 if (parent != null) { 6581 parent.requestDisallowInterceptTouchEvent(true); 6582 } 6583 if (deltaX != 0 || deltaY != 0) { 6584 mSelectDraggingCursor.offsetTo( 6585 contentX + mSelectDraggingOffset.x, 6586 contentY + mSelectDraggingOffset.y); 6587 updateWebkitSelection(); 6588 mLastTouchX = x; 6589 mLastTouchY = y; 6590 invalidate(); 6591 } 6592 break; 6593 } 6594 6595 // pass the touch events from UI thread to WebCore thread 6596 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 6597 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 6598 TouchEventData ted = new TouchEventData(); 6599 ted.mAction = action; 6600 ted.mIds = new int[1]; 6601 ted.mIds[0] = ev.getPointerId(0); 6602 ted.mPoints = new Point[1]; 6603 ted.mPoints[0] = new Point(contentX, contentY); 6604 ted.mPointsInView = new Point[1]; 6605 ted.mPointsInView[0] = new Point(x, y); 6606 ted.mMetaState = ev.getMetaState(); 6607 ted.mReprocess = mDeferTouchProcess; 6608 ted.mNativeLayer = mCurrentScrollingLayerId; 6609 ted.mNativeLayerRect.set(mScrollingLayerRect); 6610 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6611 mTouchEventQueue.preQueueTouchEventData(ted); 6612 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6613 mLastSentTouchTime = eventTime; 6614 if (mDeferTouchProcess) { 6615 break; 6616 } 6617 if (firstMove && !inFullScreenMode()) { 6618 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6619 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6620 action, 0), TAP_TIMEOUT); 6621 } 6622 } 6623 if (mTouchMode == TOUCH_DONE_MODE 6624 || mPreventDefault == PREVENT_DEFAULT_YES) { 6625 // no dragging during scroll zoom animation, or when prevent 6626 // default is yes 6627 break; 6628 } 6629 if (mVelocityTracker == null) { 6630 Log.e(LOGTAG, "Got null mVelocityTracker when " 6631 + "mPreventDefault = " + mPreventDefault 6632 + " mDeferTouchProcess = " + mDeferTouchProcess 6633 + " mTouchMode = " + mTouchMode); 6634 } else { 6635 mVelocityTracker.addMovement(ev); 6636 } 6637 6638 if (mTouchMode != TOUCH_DRAG_MODE && 6639 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6640 6641 if (!mConfirmMove) { 6642 break; 6643 } 6644 6645 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6646 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6647 // track mLastTouchTime as we may need to do fling at 6648 // ACTION_UP 6649 mLastTouchTime = eventTime; 6650 break; 6651 } 6652 6653 // Only lock dragging to one axis if we don't have a scale in progress. 6654 // Scaling implies free-roaming movement. Note this is only ever a question 6655 // if mZoomManager.supportsPanDuringZoom() is true. 6656 final ScaleGestureDetector detector = 6657 mZoomManager.getMultiTouchGestureDetector(); 6658 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6659 if (detector == null || !detector.isInProgress()) { 6660 // if it starts nearly horizontal or vertical, enforce it 6661 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6662 mSnapScrollMode = SNAP_X; 6663 mSnapPositive = deltaX > 0; 6664 mAverageAngle = ANGLE_HORIZ; 6665 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6666 mSnapScrollMode = SNAP_Y; 6667 mSnapPositive = deltaY > 0; 6668 mAverageAngle = ANGLE_VERT; 6669 } 6670 } 6671 6672 mTouchMode = TOUCH_DRAG_MODE; 6673 mLastTouchX = x; 6674 mLastTouchY = y; 6675 deltaX = 0; 6676 deltaY = 0; 6677 6678 startScrollingLayer(x, y); 6679 startDrag(); 6680 } 6681 6682 // do pan 6683 boolean done = false; 6684 boolean keepScrollBarsVisible = false; 6685 if (deltaX == 0 && deltaY == 0) { 6686 keepScrollBarsVisible = done = true; 6687 } else { 6688 mAverageAngle += 6689 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6690 / MMA_WEIGHT_N; 6691 if (mSnapScrollMode != SNAP_NONE) { 6692 if (mSnapScrollMode == SNAP_Y) { 6693 // radical change means getting out of snap mode 6694 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6695 mSnapScrollMode = SNAP_NONE; 6696 } 6697 } 6698 if (mSnapScrollMode == SNAP_X) { 6699 // radical change means getting out of snap mode 6700 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6701 mSnapScrollMode = SNAP_NONE; 6702 } 6703 } 6704 } else { 6705 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6706 mSnapScrollMode = SNAP_X; 6707 mSnapPositive = deltaX > 0; 6708 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6709 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6710 mSnapScrollMode = SNAP_Y; 6711 mSnapPositive = deltaY > 0; 6712 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6713 } 6714 } 6715 if (mSnapScrollMode != SNAP_NONE) { 6716 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6717 deltaY = 0; 6718 } else { 6719 deltaX = 0; 6720 } 6721 } 6722 mLastTouchX = x; 6723 mLastTouchY = y; 6724 6725 if (deltaX * deltaX + deltaY * deltaY > mTouchSlopSquare) { 6726 mHeldMotionless = MOTIONLESS_FALSE; 6727 nativeSetIsScrolling(true); 6728 } else { 6729 mHeldMotionless = MOTIONLESS_TRUE; 6730 nativeSetIsScrolling(false); 6731 keepScrollBarsVisible = true; 6732 } 6733 6734 mLastTouchTime = eventTime; 6735 } 6736 6737 doDrag(deltaX, deltaY); 6738 6739 // Turn off scrollbars when dragging a layer. 6740 if (keepScrollBarsVisible && 6741 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6742 if (mHeldMotionless != MOTIONLESS_TRUE) { 6743 mHeldMotionless = MOTIONLESS_TRUE; 6744 invalidate(); 6745 } 6746 // keep the scrollbar on the screen even there is no scroll 6747 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6748 false); 6749 // Post a message so that we'll keep them alive while we're not scrolling. 6750 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6751 .obtainMessage(AWAKEN_SCROLL_BARS), 6752 ViewConfiguration.getScrollDefaultDelay()); 6753 // return false to indicate that we can't pan out of the 6754 // view space 6755 return !done; 6756 } else { 6757 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6758 } 6759 break; 6760 } 6761 case MotionEvent.ACTION_UP: { 6762 if (!isFocused()) requestFocus(); 6763 // pass the touch events from UI thread to WebCore thread 6764 if (shouldForwardTouchEvent()) { 6765 TouchEventData ted = new TouchEventData(); 6766 ted.mIds = new int[1]; 6767 ted.mIds[0] = ev.getPointerId(0); 6768 ted.mAction = action; 6769 ted.mPoints = new Point[1]; 6770 ted.mPoints[0] = new Point(contentX, contentY); 6771 ted.mPointsInView = new Point[1]; 6772 ted.mPointsInView[0] = new Point(x, y); 6773 ted.mMetaState = ev.getMetaState(); 6774 ted.mReprocess = mDeferTouchProcess; 6775 ted.mNativeLayer = mCurrentScrollingLayerId; 6776 ted.mNativeLayerRect.set(mScrollingLayerRect); 6777 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6778 mTouchEventQueue.preQueueTouchEventData(ted); 6779 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6780 } 6781 mLastTouchUpTime = eventTime; 6782 if (mSentAutoScrollMessage) { 6783 mAutoScrollX = mAutoScrollY = 0; 6784 } 6785 switch (mTouchMode) { 6786 case TOUCH_DOUBLE_TAP_MODE: // double tap 6787 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6788 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6789 if (inFullScreenMode() || mDeferTouchProcess) { 6790 TouchEventData ted = new TouchEventData(); 6791 ted.mIds = new int[1]; 6792 ted.mIds[0] = ev.getPointerId(0); 6793 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6794 ted.mPoints = new Point[1]; 6795 ted.mPoints[0] = new Point(contentX, contentY); 6796 ted.mPointsInView = new Point[1]; 6797 ted.mPointsInView[0] = new Point(x, y); 6798 ted.mMetaState = ev.getMetaState(); 6799 ted.mReprocess = mDeferTouchProcess; 6800 ted.mNativeLayer = nativeScrollableLayer( 6801 contentX, contentY, 6802 ted.mNativeLayerRect, null); 6803 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6804 mTouchEventQueue.preQueueTouchEventData(ted); 6805 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6806 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6807 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6808 mTouchMode = TOUCH_DONE_MODE; 6809 } 6810 break; 6811 case TOUCH_INIT_MODE: // tap 6812 case TOUCH_SHORTPRESS_START_MODE: 6813 case TOUCH_SHORTPRESS_MODE: 6814 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6815 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6816 if (mConfirmMove) { 6817 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6818 " WebCore's response for touch down."); 6819 if (mPreventDefault != PREVENT_DEFAULT_YES 6820 && (computeMaxScrollX() > 0 6821 || computeMaxScrollY() > 0)) { 6822 // If the user has performed a very quick touch 6823 // sequence it is possible that we may get here 6824 // before WebCore has had a chance to process the events. 6825 // In this case, any call to preventDefault in the 6826 // JS touch handler will not have been executed yet. 6827 // Hence we will see both the UI (now) and WebCore 6828 // (when context switches) handling the event, 6829 // regardless of whether the web developer actually 6830 // doeses preventDefault in their touch handler. This 6831 // is the nature of our asynchronous touch model. 6832 6833 // we will not rewrite drag code here, but we 6834 // will try fling if it applies. 6835 WebViewCore.reducePriority(); 6836 // to get better performance, pause updating the 6837 // picture 6838 WebViewCore.pauseUpdatePicture(mWebViewCore); 6839 // fall through to TOUCH_DRAG_MODE 6840 } else { 6841 // WebKit may consume the touch event and modify 6842 // DOM. drawContentPicture() will be called with 6843 // animateSroll as true for better performance. 6844 // Force redraw in high-quality. 6845 invalidate(); 6846 break; 6847 } 6848 } else { 6849 if (mSelectingText) { 6850 // tapping on selection or controls does nothing 6851 if (!mSelectionStarted) { 6852 selectionDone(); 6853 } 6854 break; 6855 } 6856 // only trigger double tap if the WebView is 6857 // scalable 6858 if (mTouchMode == TOUCH_INIT_MODE 6859 && (canZoomIn() || canZoomOut())) { 6860 mPrivateHandler.sendEmptyMessageDelayed( 6861 RELEASE_SINGLE_TAP, ViewConfiguration 6862 .getDoubleTapTimeout()); 6863 } else { 6864 doShortPress(); 6865 } 6866 break; 6867 } 6868 case TOUCH_DRAG_MODE: 6869 case TOUCH_DRAG_LAYER_MODE: 6870 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6871 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6872 // if the user waits a while w/o moving before the 6873 // up, we don't want to do a fling 6874 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6875 if (mVelocityTracker == null) { 6876 Log.e(LOGTAG, "Got null mVelocityTracker when " 6877 + "mPreventDefault = " 6878 + mPreventDefault 6879 + " mDeferTouchProcess = " 6880 + mDeferTouchProcess); 6881 } else { 6882 mVelocityTracker.addMovement(ev); 6883 } 6884 // set to MOTIONLESS_IGNORE so that it won't keep 6885 // removing and sending message in 6886 // drawCoreAndCursorRing() 6887 mHeldMotionless = MOTIONLESS_IGNORE; 6888 doFling(); 6889 break; 6890 } else { 6891 if (mScroller.springBack(mScrollX, mScrollY, 0, 6892 computeMaxScrollX(), 0, 6893 computeMaxScrollY())) { 6894 invalidate(); 6895 } 6896 } 6897 // redraw in high-quality, as we're done dragging 6898 mHeldMotionless = MOTIONLESS_TRUE; 6899 invalidate(); 6900 // fall through 6901 case TOUCH_DRAG_START_MODE: 6902 // TOUCH_DRAG_START_MODE should not happen for the real 6903 // device as we almost certain will get a MOVE. But this 6904 // is possible on emulator. 6905 mLastVelocity = 0; 6906 WebViewCore.resumePriority(); 6907 if (!mSelectingText) { 6908 WebViewCore.resumeUpdatePicture(mWebViewCore); 6909 } 6910 break; 6911 } 6912 stopTouch(); 6913 break; 6914 } 6915 case MotionEvent.ACTION_CANCEL: { 6916 if (mTouchMode == TOUCH_DRAG_MODE) { 6917 mScroller.springBack(mScrollX, mScrollY, 0, 6918 computeMaxScrollX(), 0, computeMaxScrollY()); 6919 invalidate(); 6920 } 6921 cancelWebCoreTouchEvent(contentX, contentY, false); 6922 cancelTouch(); 6923 break; 6924 } 6925 } 6926 return true; 6927 } 6928 6929 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6930 TouchEventData ted = new TouchEventData(); 6931 ted.mAction = ev.getActionMasked(); 6932 final int count = ev.getPointerCount(); 6933 ted.mIds = new int[count]; 6934 ted.mPoints = new Point[count]; 6935 ted.mPointsInView = new Point[count]; 6936 for (int c = 0; c < count; c++) { 6937 ted.mIds[c] = ev.getPointerId(c); 6938 int x = viewToContentX((int) ev.getX(c) + mScrollX); 6939 int y = viewToContentY((int) ev.getY(c) + mScrollY); 6940 ted.mPoints[c] = new Point(x, y); 6941 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6942 } 6943 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6944 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6945 ted.mActionIndex = ev.getActionIndex(); 6946 } 6947 ted.mMetaState = ev.getMetaState(); 6948 ted.mReprocess = true; 6949 ted.mMotionEvent = MotionEvent.obtain(ev); 6950 ted.mSequence = sequence; 6951 mTouchEventQueue.preQueueTouchEventData(ted); 6952 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6953 cancelLongPress(); 6954 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6955 } 6956 6957 void handleMultiTouchInWebView(MotionEvent ev) { 6958 if (DebugFlags.WEB_VIEW) { 6959 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6960 + " mTouchMode=" + mTouchMode 6961 + " numPointers=" + ev.getPointerCount() 6962 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6963 } 6964 6965 final ScaleGestureDetector detector = 6966 mZoomManager.getMultiTouchGestureDetector(); 6967 6968 // A few apps use WebView but don't instantiate gesture detector. 6969 // We don't need to support multi touch for them. 6970 if (detector == null) return; 6971 6972 float x = ev.getX(); 6973 float y = ev.getY(); 6974 6975 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6976 detector.onTouchEvent(ev); 6977 6978 if (detector.isInProgress()) { 6979 if (DebugFlags.WEB_VIEW) { 6980 Log.v(LOGTAG, "detector is in progress"); 6981 } 6982 mLastTouchTime = ev.getEventTime(); 6983 x = detector.getFocusX(); 6984 y = detector.getFocusY(); 6985 6986 cancelLongPress(); 6987 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6988 if (!mZoomManager.supportsPanDuringZoom()) { 6989 return; 6990 } 6991 mTouchMode = TOUCH_DRAG_MODE; 6992 if (mVelocityTracker == null) { 6993 mVelocityTracker = VelocityTracker.obtain(); 6994 } 6995 } 6996 } 6997 6998 int action = ev.getActionMasked(); 6999 if (action == MotionEvent.ACTION_POINTER_DOWN) { 7000 cancelTouch(); 7001 action = MotionEvent.ACTION_DOWN; 7002 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 7003 // set mLastTouchX/Y to the remaining points for multi-touch. 7004 mLastTouchX = Math.round(x); 7005 mLastTouchY = Math.round(y); 7006 } else if (action == MotionEvent.ACTION_MOVE) { 7007 // negative x or y indicate it is on the edge, skip it. 7008 if (x < 0 || y < 0) { 7009 return; 7010 } 7011 } 7012 7013 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 7014 } 7015 7016 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 7017 if (shouldForwardTouchEvent()) { 7018 if (removeEvents) { 7019 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 7020 } 7021 TouchEventData ted = new TouchEventData(); 7022 ted.mIds = new int[1]; 7023 ted.mIds[0] = 0; 7024 ted.mPoints = new Point[1]; 7025 ted.mPoints[0] = new Point(x, y); 7026 ted.mPointsInView = new Point[1]; 7027 int viewX = contentToViewX(x) - mScrollX; 7028 int viewY = contentToViewY(y) - mScrollY; 7029 ted.mPointsInView[0] = new Point(viewX, viewY); 7030 ted.mAction = MotionEvent.ACTION_CANCEL; 7031 ted.mNativeLayer = nativeScrollableLayer( 7032 x, y, ted.mNativeLayerRect, null); 7033 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 7034 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7035 mPreventDefault = PREVENT_DEFAULT_IGNORE; 7036 7037 if (removeEvents) { 7038 // Mark this after sending the message above; we should 7039 // be willing to ignore the cancel event that we just sent. 7040 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 7041 } 7042 } 7043 } 7044 7045 private void startTouch(float x, float y, long eventTime) { 7046 // Remember where the motion event started 7047 mStartTouchX = mLastTouchX = Math.round(x); 7048 mStartTouchY = mLastTouchY = Math.round(y); 7049 mLastTouchTime = eventTime; 7050 mVelocityTracker = VelocityTracker.obtain(); 7051 mSnapScrollMode = SNAP_NONE; 7052 mPrivateHandler.sendEmptyMessageDelayed(UPDATE_SELECTION, 7053 ViewConfiguration.getTapTimeout()); 7054 } 7055 7056 private void startDrag() { 7057 WebViewCore.reducePriority(); 7058 // to get better performance, pause updating the picture 7059 WebViewCore.pauseUpdatePicture(mWebViewCore); 7060 nativeSetIsScrolling(true); 7061 7062 if (!mDragFromTextInput) { 7063 nativeHideCursor(); 7064 } 7065 7066 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 7067 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 7068 mZoomManager.invokeZoomPicker(); 7069 } 7070 } 7071 7072 private void doDrag(int deltaX, int deltaY) { 7073 if ((deltaX | deltaY) != 0) { 7074 int oldX = mScrollX; 7075 int oldY = mScrollY; 7076 int rangeX = computeMaxScrollX(); 7077 int rangeY = computeMaxScrollY(); 7078 // Check for the original scrolling layer in case we change 7079 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 7080 // reached the edge of a layer but mScrollingLayer will be non-zero 7081 // if we initiated the drag on a layer. 7082 if (mCurrentScrollingLayerId != 0) { 7083 final int contentX = viewToContentDimension(deltaX); 7084 final int contentY = viewToContentDimension(deltaY); 7085 7086 // Check the scrolling bounds to see if we will actually do any 7087 // scrolling. The rectangle is in document coordinates. 7088 final int maxX = mScrollingLayerRect.right; 7089 final int maxY = mScrollingLayerRect.bottom; 7090 final int resultX = Math.max(0, 7091 Math.min(mScrollingLayerRect.left + contentX, maxX)); 7092 final int resultY = Math.max(0, 7093 Math.min(mScrollingLayerRect.top + contentY, maxY)); 7094 7095 if (resultX != mScrollingLayerRect.left || 7096 resultY != mScrollingLayerRect.top) { 7097 // In case we switched to dragging the page. 7098 mTouchMode = TOUCH_DRAG_LAYER_MODE; 7099 deltaX = contentX; 7100 deltaY = contentY; 7101 oldX = mScrollingLayerRect.left; 7102 oldY = mScrollingLayerRect.top; 7103 rangeX = maxX; 7104 rangeY = maxY; 7105 } else { 7106 // Scroll the main page if we are not going to scroll the 7107 // layer. This does not reset mScrollingLayer in case the 7108 // user changes directions and the layer can scroll the 7109 // other way. 7110 mTouchMode = TOUCH_DRAG_MODE; 7111 } 7112 } 7113 7114 if (mOverScrollGlow != null) { 7115 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 7116 } 7117 7118 overScrollBy(deltaX, deltaY, oldX, oldY, 7119 rangeX, rangeY, 7120 mOverscrollDistance, mOverscrollDistance, true); 7121 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 7122 invalidate(); 7123 } 7124 } 7125 mZoomManager.keepZoomPickerVisible(); 7126 } 7127 7128 private void stopTouch() { 7129 if (mScroller.isFinished() && !mSelectingText 7130 && (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 7131 WebViewCore.resumePriority(); 7132 WebViewCore.resumeUpdatePicture(mWebViewCore); 7133 nativeSetIsScrolling(false); 7134 } 7135 7136 // we also use mVelocityTracker == null to tell us that we are 7137 // not "moving around", so we can take the slower/prettier 7138 // mode in the drawing code 7139 if (mVelocityTracker != null) { 7140 mVelocityTracker.recycle(); 7141 mVelocityTracker = null; 7142 } 7143 7144 // Release any pulled glows 7145 if (mOverScrollGlow != null) { 7146 mOverScrollGlow.releaseAll(); 7147 } 7148 7149 if (mSelectingText) { 7150 mSelectionStarted = false; 7151 syncSelectionCursors(); 7152 invalidate(); 7153 } 7154 } 7155 7156 private void cancelTouch() { 7157 // we also use mVelocityTracker == null to tell us that we are 7158 // not "moving around", so we can take the slower/prettier 7159 // mode in the drawing code 7160 if (mVelocityTracker != null) { 7161 mVelocityTracker.recycle(); 7162 mVelocityTracker = null; 7163 } 7164 7165 if ((mTouchMode == TOUCH_DRAG_MODE 7166 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 7167 WebViewCore.resumePriority(); 7168 WebViewCore.resumeUpdatePicture(mWebViewCore); 7169 nativeSetIsScrolling(false); 7170 } 7171 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 7172 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7173 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 7174 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 7175 if (sDisableNavcache) { 7176 removeTouchHighlight(); 7177 } 7178 mHeldMotionless = MOTIONLESS_TRUE; 7179 mTouchMode = TOUCH_DONE_MODE; 7180 nativeHideCursor(); 7181 } 7182 7183 @Override 7184 public boolean onGenericMotionEvent(MotionEvent event) { 7185 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 7186 switch (event.getAction()) { 7187 case MotionEvent.ACTION_SCROLL: { 7188 final float vscroll; 7189 final float hscroll; 7190 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 7191 vscroll = 0; 7192 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 7193 } else { 7194 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 7195 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 7196 } 7197 if (hscroll != 0 || vscroll != 0) { 7198 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 7199 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 7200 if (pinScrollBy(hdelta, vdelta, false, 0)) { 7201 return true; 7202 } 7203 } 7204 } 7205 } 7206 } 7207 return super.onGenericMotionEvent(event); 7208 } 7209 7210 private long mTrackballFirstTime = 0; 7211 private long mTrackballLastTime = 0; 7212 private float mTrackballRemainsX = 0.0f; 7213 private float mTrackballRemainsY = 0.0f; 7214 private int mTrackballXMove = 0; 7215 private int mTrackballYMove = 0; 7216 private boolean mSelectingText = false; 7217 private boolean mSelectionStarted = false; 7218 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 7219 private static final int TRACKBALL_TIMEOUT = 200; 7220 private static final int TRACKBALL_WAIT = 100; 7221 private static final int TRACKBALL_SCALE = 400; 7222 private static final int TRACKBALL_SCROLL_COUNT = 5; 7223 private static final int TRACKBALL_MOVE_COUNT = 10; 7224 private static final int TRACKBALL_MULTIPLIER = 3; 7225 private static final int SELECT_CURSOR_OFFSET = 16; 7226 private static final int SELECT_SCROLL = 5; 7227 private int mSelectX = 0; 7228 private int mSelectY = 0; 7229 private boolean mFocusSizeChanged = false; 7230 private boolean mTrackballDown = false; 7231 private long mTrackballUpTime = 0; 7232 private long mLastCursorTime = 0; 7233 private Rect mLastCursorBounds; 7234 7235 // Set by default; BrowserActivity clears to interpret trackball data 7236 // directly for movement. Currently, the framework only passes 7237 // arrow key events, not trackball events, from one child to the next 7238 private boolean mMapTrackballToArrowKeys = true; 7239 7240 private DrawData mDelaySetPicture; 7241 private DrawData mLoadedPicture; 7242 7243 public void setMapTrackballToArrowKeys(boolean setMap) { 7244 checkThread(); 7245 mMapTrackballToArrowKeys = setMap; 7246 } 7247 7248 void resetTrackballTime() { 7249 mTrackballLastTime = 0; 7250 } 7251 7252 @Override 7253 public boolean onTrackballEvent(MotionEvent ev) { 7254 long time = ev.getEventTime(); 7255 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 7256 if (ev.getY() > 0) pageDown(true); 7257 if (ev.getY() < 0) pageUp(true); 7258 return true; 7259 } 7260 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 7261 if (mSelectingText) { 7262 return true; // discard press if copy in progress 7263 } 7264 mTrackballDown = true; 7265 if (mNativeClass == 0) { 7266 return false; 7267 } 7268 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 7269 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 7270 nativeSelectBestAt(mLastCursorBounds); 7271 } 7272 if (DebugFlags.WEB_VIEW) { 7273 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 7274 + " time=" + time 7275 + " mLastCursorTime=" + mLastCursorTime); 7276 } 7277 if (isInTouchMode()) requestFocusFromTouch(); 7278 return false; // let common code in onKeyDown at it 7279 } 7280 if (ev.getAction() == MotionEvent.ACTION_UP) { 7281 // LONG_PRESS_CENTER is set in common onKeyDown 7282 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 7283 mTrackballDown = false; 7284 mTrackballUpTime = time; 7285 if (mSelectingText) { 7286 copySelection(); 7287 selectionDone(); 7288 return true; // discard press if copy in progress 7289 } 7290 if (DebugFlags.WEB_VIEW) { 7291 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 7292 + " time=" + time 7293 ); 7294 } 7295 return false; // let common code in onKeyUp at it 7296 } 7297 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 7298 AccessibilityManager.getInstance(mContext).isEnabled()) { 7299 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 7300 return false; 7301 } 7302 if (mTrackballDown) { 7303 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 7304 return true; // discard move if trackball is down 7305 } 7306 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 7307 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 7308 return true; 7309 } 7310 // TODO: alternatively we can do panning as touch does 7311 switchOutDrawHistory(); 7312 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 7313 if (DebugFlags.WEB_VIEW) { 7314 Log.v(LOGTAG, "onTrackballEvent time=" 7315 + time + " last=" + mTrackballLastTime); 7316 } 7317 mTrackballFirstTime = time; 7318 mTrackballXMove = mTrackballYMove = 0; 7319 } 7320 mTrackballLastTime = time; 7321 if (DebugFlags.WEB_VIEW) { 7322 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 7323 } 7324 mTrackballRemainsX += ev.getX(); 7325 mTrackballRemainsY += ev.getY(); 7326 doTrackball(time, ev.getMetaState()); 7327 return true; 7328 } 7329 7330 private int scaleTrackballX(float xRate, int width) { 7331 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 7332 int nextXMove = xMove; 7333 if (xMove > 0) { 7334 if (xMove > mTrackballXMove) { 7335 xMove -= mTrackballXMove; 7336 } 7337 } else if (xMove < mTrackballXMove) { 7338 xMove -= mTrackballXMove; 7339 } 7340 mTrackballXMove = nextXMove; 7341 return xMove; 7342 } 7343 7344 private int scaleTrackballY(float yRate, int height) { 7345 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 7346 int nextYMove = yMove; 7347 if (yMove > 0) { 7348 if (yMove > mTrackballYMove) { 7349 yMove -= mTrackballYMove; 7350 } 7351 } else if (yMove < mTrackballYMove) { 7352 yMove -= mTrackballYMove; 7353 } 7354 mTrackballYMove = nextYMove; 7355 return yMove; 7356 } 7357 7358 private int keyCodeToSoundsEffect(int keyCode) { 7359 switch(keyCode) { 7360 case KeyEvent.KEYCODE_DPAD_UP: 7361 return SoundEffectConstants.NAVIGATION_UP; 7362 case KeyEvent.KEYCODE_DPAD_RIGHT: 7363 return SoundEffectConstants.NAVIGATION_RIGHT; 7364 case KeyEvent.KEYCODE_DPAD_DOWN: 7365 return SoundEffectConstants.NAVIGATION_DOWN; 7366 case KeyEvent.KEYCODE_DPAD_LEFT: 7367 return SoundEffectConstants.NAVIGATION_LEFT; 7368 } 7369 throw new IllegalArgumentException("keyCode must be one of " + 7370 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 7371 "KEYCODE_DPAD_LEFT}."); 7372 } 7373 7374 private void doTrackball(long time, int metaState) { 7375 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 7376 if (elapsed == 0) { 7377 elapsed = TRACKBALL_TIMEOUT; 7378 } 7379 float xRate = mTrackballRemainsX * 1000 / elapsed; 7380 float yRate = mTrackballRemainsY * 1000 / elapsed; 7381 int viewWidth = getViewWidth(); 7382 int viewHeight = getViewHeight(); 7383 float ax = Math.abs(xRate); 7384 float ay = Math.abs(yRate); 7385 float maxA = Math.max(ax, ay); 7386 if (DebugFlags.WEB_VIEW) { 7387 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 7388 + " xRate=" + xRate 7389 + " yRate=" + yRate 7390 + " mTrackballRemainsX=" + mTrackballRemainsX 7391 + " mTrackballRemainsY=" + mTrackballRemainsY); 7392 } 7393 int width = mContentWidth - viewWidth; 7394 int height = mContentHeight - viewHeight; 7395 if (width < 0) width = 0; 7396 if (height < 0) height = 0; 7397 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 7398 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 7399 maxA = Math.max(ax, ay); 7400 int count = Math.max(0, (int) maxA); 7401 int oldScrollX = mScrollX; 7402 int oldScrollY = mScrollY; 7403 if (count > 0) { 7404 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 7405 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 7406 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 7407 KeyEvent.KEYCODE_DPAD_RIGHT; 7408 count = Math.min(count, TRACKBALL_MOVE_COUNT); 7409 if (DebugFlags.WEB_VIEW) { 7410 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 7411 + " count=" + count 7412 + " mTrackballRemainsX=" + mTrackballRemainsX 7413 + " mTrackballRemainsY=" + mTrackballRemainsY); 7414 } 7415 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 7416 for (int i = 0; i < count; i++) { 7417 letPageHandleNavKey(selectKeyCode, time, true, metaState); 7418 } 7419 letPageHandleNavKey(selectKeyCode, time, false, metaState); 7420 } else if (navHandledKey(selectKeyCode, count, false, time)) { 7421 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 7422 } 7423 mTrackballRemainsX = mTrackballRemainsY = 0; 7424 } 7425 if (count >= TRACKBALL_SCROLL_COUNT) { 7426 int xMove = scaleTrackballX(xRate, width); 7427 int yMove = scaleTrackballY(yRate, height); 7428 if (DebugFlags.WEB_VIEW) { 7429 Log.v(LOGTAG, "doTrackball pinScrollBy" 7430 + " count=" + count 7431 + " xMove=" + xMove + " yMove=" + yMove 7432 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 7433 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 7434 ); 7435 } 7436 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 7437 xMove = 0; 7438 } 7439 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 7440 yMove = 0; 7441 } 7442 if (xMove != 0 || yMove != 0) { 7443 pinScrollBy(xMove, yMove, true, 0); 7444 } 7445 } 7446 } 7447 7448 /** 7449 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 7450 * @return Maximum horizontal scroll position within real content 7451 */ 7452 int computeMaxScrollX() { 7453 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 7454 } 7455 7456 /** 7457 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 7458 * @return Maximum vertical scroll position within real content 7459 */ 7460 int computeMaxScrollY() { 7461 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 7462 - getViewHeightWithTitle(), 0); 7463 } 7464 7465 boolean updateScrollCoordinates(int x, int y) { 7466 int oldX = mScrollX; 7467 int oldY = mScrollY; 7468 mScrollX = x; 7469 mScrollY = y; 7470 if (oldX != mScrollX || oldY != mScrollY) { 7471 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 7472 return true; 7473 } else { 7474 return false; 7475 } 7476 } 7477 7478 public void flingScroll(int vx, int vy) { 7479 checkThread(); 7480 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 7481 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 7482 invalidate(); 7483 } 7484 7485 private void doFling() { 7486 if (mVelocityTracker == null) { 7487 return; 7488 } 7489 int maxX = computeMaxScrollX(); 7490 int maxY = computeMaxScrollY(); 7491 7492 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 7493 int vx = (int) mVelocityTracker.getXVelocity(); 7494 int vy = (int) mVelocityTracker.getYVelocity(); 7495 7496 int scrollX = mScrollX; 7497 int scrollY = mScrollY; 7498 int overscrollDistance = mOverscrollDistance; 7499 int overflingDistance = mOverflingDistance; 7500 7501 // Use the layer's scroll data if applicable. 7502 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 7503 scrollX = mScrollingLayerRect.left; 7504 scrollY = mScrollingLayerRect.top; 7505 maxX = mScrollingLayerRect.right; 7506 maxY = mScrollingLayerRect.bottom; 7507 // No overscrolling for layers. 7508 overscrollDistance = overflingDistance = 0; 7509 } 7510 7511 if (mSnapScrollMode != SNAP_NONE) { 7512 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 7513 vy = 0; 7514 } else { 7515 vx = 0; 7516 } 7517 } 7518 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 7519 WebViewCore.resumePriority(); 7520 if (!mSelectingText) { 7521 WebViewCore.resumeUpdatePicture(mWebViewCore); 7522 } 7523 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 7524 invalidate(); 7525 } 7526 return; 7527 } 7528 float currentVelocity = mScroller.getCurrVelocity(); 7529 float velocity = (float) Math.hypot(vx, vy); 7530 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 7531 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 7532 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 7533 - Math.atan2(vy, vx))); 7534 final float circle = (float) (Math.PI) * 2.0f; 7535 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 7536 vx += currentVelocity * mLastVelX / mLastVelocity; 7537 vy += currentVelocity * mLastVelY / mLastVelocity; 7538 velocity = (float) Math.hypot(vx, vy); 7539 if (DebugFlags.WEB_VIEW) { 7540 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 7541 } 7542 } else if (DebugFlags.WEB_VIEW) { 7543 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 7544 } 7545 } else if (DebugFlags.WEB_VIEW) { 7546 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 7547 + " current=" + currentVelocity 7548 + " vx=" + vx + " vy=" + vy 7549 + " maxX=" + maxX + " maxY=" + maxY 7550 + " scrollX=" + scrollX + " scrollY=" + scrollY 7551 + " layer=" + mCurrentScrollingLayerId); 7552 } 7553 7554 // Allow sloppy flings without overscrolling at the edges. 7555 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 7556 vx = 0; 7557 } 7558 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 7559 vy = 0; 7560 } 7561 7562 if (overscrollDistance < overflingDistance) { 7563 if ((vx > 0 && scrollX == -overscrollDistance) || 7564 (vx < 0 && scrollX == maxX + overscrollDistance)) { 7565 vx = 0; 7566 } 7567 if ((vy > 0 && scrollY == -overscrollDistance) || 7568 (vy < 0 && scrollY == maxY + overscrollDistance)) { 7569 vy = 0; 7570 } 7571 } 7572 7573 mLastVelX = vx; 7574 mLastVelY = vy; 7575 mLastVelocity = velocity; 7576 7577 // no horizontal overscroll if the content just fits 7578 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 7579 maxX == 0 ? 0 : overflingDistance, overflingDistance); 7580 // Duration is calculated based on velocity. With range boundaries and overscroll 7581 // we may not know how long the final animation will take. (Hence the deprecation 7582 // warning on the call below.) It's not a big deal for scroll bars but if webcore 7583 // resumes during this effect we will take a performance hit. See computeScroll; 7584 // we resume webcore there when the animation is finished. 7585 final int time = mScroller.getDuration(); 7586 7587 // Suppress scrollbars for layer scrolling. 7588 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 7589 awakenScrollBars(time); 7590 } 7591 7592 invalidate(); 7593 } 7594 7595 /** 7596 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 7597 * in charge of installing this view to the view hierarchy. This view will 7598 * become visible when the user starts scrolling via touch and fade away if 7599 * the user does not interact with it. 7600 * <p/> 7601 * API version 3 introduces a built-in zoom mechanism that is shown 7602 * automatically by the MapView. This is the preferred approach for 7603 * showing the zoom UI. 7604 * 7605 * @deprecated The built-in zoom mechanism is preferred, see 7606 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 7607 */ 7608 @Deprecated 7609 public View getZoomControls() { 7610 checkThread(); 7611 if (!getSettings().supportZoom()) { 7612 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7613 return null; 7614 } 7615 return mZoomManager.getExternalZoomPicker(); 7616 } 7617 7618 void dismissZoomControl() { 7619 mZoomManager.dismissZoomPicker(); 7620 } 7621 7622 float getDefaultZoomScale() { 7623 return mZoomManager.getDefaultScale(); 7624 } 7625 7626 /** 7627 * Return the overview scale of the WebView 7628 * @return The overview scale. 7629 */ 7630 float getZoomOverviewScale() { 7631 return mZoomManager.getZoomOverviewScale(); 7632 } 7633 7634 /** 7635 * @return TRUE if the WebView can be zoomed in. 7636 */ 7637 public boolean canZoomIn() { 7638 checkThread(); 7639 return mZoomManager.canZoomIn(); 7640 } 7641 7642 /** 7643 * @return TRUE if the WebView can be zoomed out. 7644 */ 7645 public boolean canZoomOut() { 7646 checkThread(); 7647 return mZoomManager.canZoomOut(); 7648 } 7649 7650 /** 7651 * Perform zoom in in the webview 7652 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7653 */ 7654 public boolean zoomIn() { 7655 checkThread(); 7656 return mZoomManager.zoomIn(); 7657 } 7658 7659 /** 7660 * Perform zoom out in the webview 7661 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7662 */ 7663 public boolean zoomOut() { 7664 checkThread(); 7665 return mZoomManager.zoomOut(); 7666 } 7667 7668 /** 7669 * This selects the best clickable target at mLastTouchX and mLastTouchY 7670 * and calls showCursorTimed on the native side 7671 */ 7672 private void updateSelection() { 7673 if (mNativeClass == 0 || sDisableNavcache) { 7674 return; 7675 } 7676 mPrivateHandler.removeMessages(UPDATE_SELECTION); 7677 // mLastTouchX and mLastTouchY are the point in the current viewport 7678 int contentX = viewToContentX(mLastTouchX + mScrollX); 7679 int contentY = viewToContentY(mLastTouchY + mScrollY); 7680 int slop = viewToContentDimension(mNavSlop); 7681 Rect rect = new Rect(contentX - slop, contentY - slop, 7682 contentX + slop, contentY + slop); 7683 nativeSelectBestAt(rect); 7684 mInitialHitTestResult = hitTestResult(null); 7685 } 7686 7687 /** 7688 * Scroll the focused text field to match the WebTextView 7689 * @param xPercent New x position of the WebTextView from 0 to 1. 7690 */ 7691 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7692 if (!inEditingMode() || mWebViewCore == null) { 7693 return; 7694 } 7695 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7696 new Float(xPercent)); 7697 } 7698 7699 /** 7700 * Scroll the focused textarea vertically to match the WebTextView 7701 * @param y New y position of the WebTextView in view coordinates 7702 */ 7703 /* package */ void scrollFocusedTextInputY(int y) { 7704 if (!inEditingMode() || mWebViewCore == null) { 7705 return; 7706 } 7707 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7708 } 7709 7710 /** 7711 * Set our starting point and time for a drag from the WebTextView. 7712 */ 7713 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7714 if (!inEditingMode()) { 7715 return; 7716 } 7717 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7718 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7719 mLastTouchTime = eventTime; 7720 if (!mScroller.isFinished()) { 7721 abortAnimation(); 7722 } 7723 mSnapScrollMode = SNAP_NONE; 7724 mVelocityTracker = VelocityTracker.obtain(); 7725 mTouchMode = TOUCH_DRAG_START_MODE; 7726 } 7727 7728 /** 7729 * Given a motion event from the WebTextView, set its location to our 7730 * coordinates, and handle the event. 7731 */ 7732 /*package*/ boolean textFieldDrag(MotionEvent event) { 7733 if (!inEditingMode()) { 7734 return false; 7735 } 7736 mDragFromTextInput = true; 7737 event.offsetLocation((mWebTextView.getLeft() - mScrollX), 7738 (mWebTextView.getTop() - mScrollY)); 7739 boolean result = onTouchEvent(event); 7740 mDragFromTextInput = false; 7741 return result; 7742 } 7743 7744 /** 7745 * Due a touch up from a WebTextView. This will be handled by webkit to 7746 * change the selection. 7747 * @param event MotionEvent in the WebTextView's coordinates. 7748 */ 7749 /*package*/ void touchUpOnTextField(MotionEvent event) { 7750 if (!inEditingMode()) { 7751 return; 7752 } 7753 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7754 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7755 int slop = viewToContentDimension(mNavSlop); 7756 nativeMotionUp(x, y, slop); 7757 } 7758 7759 /** 7760 * Called when pressing the center key or trackball on a textfield. 7761 */ 7762 /*package*/ void centerKeyPressOnTextField() { 7763 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7764 nativeCursorNodePointer()); 7765 } 7766 7767 private void doShortPress() { 7768 if (mNativeClass == 0) { 7769 return; 7770 } 7771 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7772 return; 7773 } 7774 mTouchMode = TOUCH_DONE_MODE; 7775 updateSelection(); 7776 switchOutDrawHistory(); 7777 // mLastTouchX and mLastTouchY are the point in the current viewport 7778 int contentX = viewToContentX(mLastTouchX + mScrollX); 7779 int contentY = viewToContentY(mLastTouchY + mScrollY); 7780 int slop = viewToContentDimension(mNavSlop); 7781 if (sDisableNavcache && !mTouchHighlightRegion.isEmpty()) { 7782 // set mTouchHighlightRequested to 0 to cause an immediate 7783 // drawing of the touch rings 7784 mTouchHighlightRequested = 0; 7785 invalidate(mTouchHighlightRegion.getBounds()); 7786 mPrivateHandler.postDelayed(new Runnable() { 7787 @Override 7788 public void run() { 7789 removeTouchHighlight(); 7790 } 7791 }, ViewConfiguration.getPressedStateDuration()); 7792 } 7793 if (sDisableNavcache) { 7794 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7795 // use "0" as generation id to inform WebKit to use the same x/y as 7796 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7797 touchUpData.mMoveGeneration = 0; 7798 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7799 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7800 WebViewCore.MotionUpData motionUpData = new WebViewCore 7801 .MotionUpData(); 7802 motionUpData.mFrame = nativeCacheHitFramePointer(); 7803 motionUpData.mNode = nativeCacheHitNodePointer(); 7804 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7805 motionUpData.mX = contentX; 7806 motionUpData.mY = contentY; 7807 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7808 motionUpData); 7809 } else { 7810 doMotionUp(contentX, contentY); 7811 } 7812 } 7813 7814 private void doMotionUp(int contentX, int contentY) { 7815 int slop = viewToContentDimension(mNavSlop); 7816 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7817 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7818 } 7819 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7820 playSoundEffect(SoundEffectConstants.CLICK); 7821 } 7822 } 7823 7824 void sendPluginDrawMsg() { 7825 mWebViewCore.sendMessage(EventHub.PLUGIN_SURFACE_READY); 7826 } 7827 7828 /** 7829 * Returns plugin bounds if x/y in content coordinates corresponds to a 7830 * plugin. Otherwise a NULL rectangle is returned. 7831 */ 7832 Rect getPluginBounds(int x, int y) { 7833 int slop = viewToContentDimension(mNavSlop); 7834 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7835 return nativeCacheHitNodeBounds(); 7836 } else { 7837 return null; 7838 } 7839 } 7840 7841 /* 7842 * Return true if the rect (e.g. plugin) is fully visible and maximized 7843 * inside the WebView. 7844 */ 7845 boolean isRectFitOnScreen(Rect rect) { 7846 final int rectWidth = rect.width(); 7847 final int rectHeight = rect.height(); 7848 final int viewWidth = getViewWidth(); 7849 final int viewHeight = getViewHeightWithTitle(); 7850 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7851 scale = mZoomManager.computeScaleWithLimits(scale); 7852 return !mZoomManager.willScaleTriggerZoom(scale) 7853 && contentToViewX(rect.left) >= mScrollX 7854 && contentToViewX(rect.right) <= mScrollX + viewWidth 7855 && contentToViewY(rect.top) >= mScrollY 7856 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7857 } 7858 7859 /* 7860 * Maximize and center the rectangle, specified in the document coordinate 7861 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7862 * animated scroll to center it. If the zoom needs to be changed, find the 7863 * zoom center and do a smooth zoom transition. The rect is in document 7864 * coordinates 7865 */ 7866 void centerFitRect(Rect rect) { 7867 final int rectWidth = rect.width(); 7868 final int rectHeight = rect.height(); 7869 final int viewWidth = getViewWidth(); 7870 final int viewHeight = getViewHeightWithTitle(); 7871 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7872 / rectHeight); 7873 scale = mZoomManager.computeScaleWithLimits(scale); 7874 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7875 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7876 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7877 true, 0); 7878 } else { 7879 float actualScale = mZoomManager.getScale(); 7880 float oldScreenX = rect.left * actualScale - mScrollX; 7881 float rectViewX = rect.left * scale; 7882 float rectViewWidth = rectWidth * scale; 7883 float newMaxWidth = mContentWidth * scale; 7884 float newScreenX = (viewWidth - rectViewWidth) / 2; 7885 // pin the newX to the WebView 7886 if (newScreenX > rectViewX) { 7887 newScreenX = rectViewX; 7888 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7889 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7890 } 7891 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7892 / (scale - actualScale); 7893 float oldScreenY = rect.top * actualScale + getTitleHeight() 7894 - mScrollY; 7895 float rectViewY = rect.top * scale + getTitleHeight(); 7896 float rectViewHeight = rectHeight * scale; 7897 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7898 float newScreenY = (viewHeight - rectViewHeight) / 2; 7899 // pin the newY to the WebView 7900 if (newScreenY > rectViewY) { 7901 newScreenY = rectViewY; 7902 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7903 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7904 } 7905 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7906 / (scale - actualScale); 7907 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7908 mZoomManager.startZoomAnimation(scale, false); 7909 } 7910 } 7911 7912 // Called by JNI to handle a touch on a node representing an email address, 7913 // address, or phone number 7914 private void overrideLoading(String url) { 7915 mCallbackProxy.uiOverrideUrlLoading(url); 7916 } 7917 7918 @Override 7919 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7920 // FIXME: If a subwindow is showing find, and the user touches the 7921 // background window, it can steal focus. 7922 if (mFindIsUp) return false; 7923 boolean result = false; 7924 if (inEditingMode()) { 7925 result = mWebTextView.requestFocus(direction, 7926 previouslyFocusedRect); 7927 } else { 7928 result = super.requestFocus(direction, previouslyFocusedRect); 7929 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 7930 // For cases such as GMail, where we gain focus from a direction, 7931 // we want to move to the first available link. 7932 // FIXME: If there are no visible links, we may not want to 7933 int fakeKeyDirection = 0; 7934 switch(direction) { 7935 case View.FOCUS_UP: 7936 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7937 break; 7938 case View.FOCUS_DOWN: 7939 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7940 break; 7941 case View.FOCUS_LEFT: 7942 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7943 break; 7944 case View.FOCUS_RIGHT: 7945 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7946 break; 7947 default: 7948 return result; 7949 } 7950 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7951 navHandledKey(fakeKeyDirection, 1, true, 0); 7952 } 7953 } 7954 } 7955 return result; 7956 } 7957 7958 @Override 7959 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7960 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7961 7962 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7963 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7964 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7965 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7966 7967 int measuredHeight = heightSize; 7968 int measuredWidth = widthSize; 7969 7970 // Grab the content size from WebViewCore. 7971 int contentHeight = contentToViewDimension(mContentHeight); 7972 int contentWidth = contentToViewDimension(mContentWidth); 7973 7974// Log.d(LOGTAG, "------- measure " + heightMode); 7975 7976 if (heightMode != MeasureSpec.EXACTLY) { 7977 mHeightCanMeasure = true; 7978 measuredHeight = contentHeight; 7979 if (heightMode == MeasureSpec.AT_MOST) { 7980 // If we are larger than the AT_MOST height, then our height can 7981 // no longer be measured and we should scroll internally. 7982 if (measuredHeight > heightSize) { 7983 measuredHeight = heightSize; 7984 mHeightCanMeasure = false; 7985 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7986 } 7987 } 7988 } else { 7989 mHeightCanMeasure = false; 7990 } 7991 if (mNativeClass != 0) { 7992 nativeSetHeightCanMeasure(mHeightCanMeasure); 7993 } 7994 // For the width, always use the given size unless unspecified. 7995 if (widthMode == MeasureSpec.UNSPECIFIED) { 7996 mWidthCanMeasure = true; 7997 measuredWidth = contentWidth; 7998 } else { 7999 if (measuredWidth < contentWidth) { 8000 measuredWidth |= MEASURED_STATE_TOO_SMALL; 8001 } 8002 mWidthCanMeasure = false; 8003 } 8004 8005 synchronized (this) { 8006 setMeasuredDimension(measuredWidth, measuredHeight); 8007 } 8008 } 8009 8010 @Override 8011 public boolean requestChildRectangleOnScreen(View child, 8012 Rect rect, 8013 boolean immediate) { 8014 if (mNativeClass == 0) { 8015 return false; 8016 } 8017 // don't scroll while in zoom animation. When it is done, we will adjust 8018 // the necessary components (e.g., WebTextView if it is in editing mode) 8019 if (mZoomManager.isFixedLengthAnimationInProgress()) { 8020 return false; 8021 } 8022 8023 rect.offset(child.getLeft() - child.getScrollX(), 8024 child.getTop() - child.getScrollY()); 8025 8026 Rect content = new Rect(viewToContentX(mScrollX), 8027 viewToContentY(mScrollY), 8028 viewToContentX(mScrollX + getWidth() 8029 - getVerticalScrollbarWidth()), 8030 viewToContentY(mScrollY + getViewHeightWithTitle())); 8031 content = nativeSubtractLayers(content); 8032 int screenTop = contentToViewY(content.top); 8033 int screenBottom = contentToViewY(content.bottom); 8034 int height = screenBottom - screenTop; 8035 int scrollYDelta = 0; 8036 8037 if (rect.bottom > screenBottom) { 8038 int oneThirdOfScreenHeight = height / 3; 8039 if (rect.height() > 2 * oneThirdOfScreenHeight) { 8040 // If the rectangle is too tall to fit in the bottom two thirds 8041 // of the screen, place it at the top. 8042 scrollYDelta = rect.top - screenTop; 8043 } else { 8044 // If the rectangle will still fit on screen, we want its 8045 // top to be in the top third of the screen. 8046 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 8047 } 8048 } else if (rect.top < screenTop) { 8049 scrollYDelta = rect.top - screenTop; 8050 } 8051 8052 int screenLeft = contentToViewX(content.left); 8053 int screenRight = contentToViewX(content.right); 8054 int width = screenRight - screenLeft; 8055 int scrollXDelta = 0; 8056 8057 if (rect.right > screenRight && rect.left > screenLeft) { 8058 if (rect.width() > width) { 8059 scrollXDelta += (rect.left - screenLeft); 8060 } else { 8061 scrollXDelta += (rect.right - screenRight); 8062 } 8063 } else if (rect.left < screenLeft) { 8064 scrollXDelta -= (screenLeft - rect.left); 8065 } 8066 8067 if ((scrollYDelta | scrollXDelta) != 0) { 8068 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 8069 } 8070 8071 return false; 8072 } 8073 8074 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 8075 String replace, int newStart, int newEnd) { 8076 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 8077 arg.mReplace = replace; 8078 arg.mNewStart = newStart; 8079 arg.mNewEnd = newEnd; 8080 mTextGeneration++; 8081 arg.mTextGeneration = mTextGeneration; 8082 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 8083 } 8084 8085 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 8086 // check if mWebViewCore has been destroyed 8087 if (mWebViewCore == null) { 8088 return; 8089 } 8090 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 8091 arg.mEvent = event; 8092 arg.mCurrentText = currentText; 8093 // Increase our text generation number, and pass it to webcore thread 8094 mTextGeneration++; 8095 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 8096 // WebKit's document state is not saved until about to leave the page. 8097 // To make sure the host application, like Browser, has the up to date 8098 // document state when it goes to background, we force to save the 8099 // document state. 8100 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 8101 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 8102 cursorData(), 1000); 8103 } 8104 8105 /** 8106 * @hide 8107 */ 8108 public synchronized WebViewCore getWebViewCore() { 8109 return mWebViewCore; 8110 } 8111 8112 /** 8113 * Used only by TouchEventQueue to store pending touch events. 8114 */ 8115 private static class QueuedTouch { 8116 long mSequence; 8117 MotionEvent mEvent; // Optional 8118 TouchEventData mTed; // Optional 8119 8120 QueuedTouch mNext; 8121 8122 public QueuedTouch set(TouchEventData ted) { 8123 mSequence = ted.mSequence; 8124 mTed = ted; 8125 mEvent = null; 8126 mNext = null; 8127 return this; 8128 } 8129 8130 public QueuedTouch set(MotionEvent ev, long sequence) { 8131 mEvent = MotionEvent.obtain(ev); 8132 mSequence = sequence; 8133 mTed = null; 8134 mNext = null; 8135 return this; 8136 } 8137 8138 public QueuedTouch add(QueuedTouch other) { 8139 if (other.mSequence < mSequence) { 8140 other.mNext = this; 8141 return other; 8142 } 8143 8144 QueuedTouch insertAt = this; 8145 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 8146 insertAt = insertAt.mNext; 8147 } 8148 other.mNext = insertAt.mNext; 8149 insertAt.mNext = other; 8150 return this; 8151 } 8152 } 8153 8154 /** 8155 * WebView handles touch events asynchronously since some events must be passed to WebKit 8156 * for potentially slower processing. TouchEventQueue serializes touch events regardless 8157 * of which path they take to ensure that no events are ever processed out of order 8158 * by WebView. 8159 */ 8160 private class TouchEventQueue { 8161 private long mNextTouchSequence = Long.MIN_VALUE + 1; 8162 private long mLastHandledTouchSequence = Long.MIN_VALUE; 8163 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 8164 8165 // Events waiting to be processed. 8166 private QueuedTouch mTouchEventQueue; 8167 8168 // Known events that are waiting on a response before being enqueued. 8169 private QueuedTouch mPreQueue; 8170 8171 // Pool of QueuedTouch objects saved for later use. 8172 private QueuedTouch mQueuedTouchRecycleBin; 8173 private int mQueuedTouchRecycleCount; 8174 8175 private long mLastEventTime = Long.MAX_VALUE; 8176 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 8177 8178 // milliseconds until we abandon hope of getting all of a previous gesture 8179 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 8180 8181 private QueuedTouch obtainQueuedTouch() { 8182 if (mQueuedTouchRecycleBin != null) { 8183 QueuedTouch result = mQueuedTouchRecycleBin; 8184 mQueuedTouchRecycleBin = result.mNext; 8185 mQueuedTouchRecycleCount--; 8186 return result; 8187 } 8188 return new QueuedTouch(); 8189 } 8190 8191 /** 8192 * Allow events with any currently missing sequence numbers to be skipped in processing. 8193 */ 8194 public void ignoreCurrentlyMissingEvents() { 8195 mIgnoreUntilSequence = mNextTouchSequence; 8196 8197 // Run any events we have available and complete, pre-queued or otherwise. 8198 runQueuedAndPreQueuedEvents(); 8199 } 8200 8201 private void runQueuedAndPreQueuedEvents() { 8202 QueuedTouch qd = mPreQueue; 8203 boolean fromPreQueue = true; 8204 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8205 handleQueuedTouch(qd); 8206 QueuedTouch recycleMe = qd; 8207 if (fromPreQueue) { 8208 mPreQueue = qd.mNext; 8209 } else { 8210 mTouchEventQueue = qd.mNext; 8211 } 8212 recycleQueuedTouch(recycleMe); 8213 mLastHandledTouchSequence++; 8214 8215 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 8216 long nextQueued = mTouchEventQueue != null ? 8217 mTouchEventQueue.mSequence : Long.MAX_VALUE; 8218 fromPreQueue = nextPre < nextQueued; 8219 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 8220 } 8221 } 8222 8223 /** 8224 * Add a TouchEventData to the pre-queue. 8225 * 8226 * An event in the pre-queue is an event that we know about that 8227 * has been sent to webkit, but that we haven't received back and 8228 * enqueued into the normal touch queue yet. If webkit ever times 8229 * out and we need to ignore currently missing events, we'll run 8230 * events from the pre-queue to patch the holes. 8231 * 8232 * @param ted TouchEventData to pre-queue 8233 */ 8234 public void preQueueTouchEventData(TouchEventData ted) { 8235 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 8236 if (mPreQueue == null) { 8237 mPreQueue = newTouch; 8238 } else { 8239 QueuedTouch insertionPoint = mPreQueue; 8240 while (insertionPoint.mNext != null && 8241 insertionPoint.mNext.mSequence < newTouch.mSequence) { 8242 insertionPoint = insertionPoint.mNext; 8243 } 8244 newTouch.mNext = insertionPoint.mNext; 8245 insertionPoint.mNext = newTouch; 8246 } 8247 } 8248 8249 private void recycleQueuedTouch(QueuedTouch qd) { 8250 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 8251 qd.mNext = mQueuedTouchRecycleBin; 8252 mQueuedTouchRecycleBin = qd; 8253 mQueuedTouchRecycleCount++; 8254 } 8255 } 8256 8257 /** 8258 * Reset the touch event queue. This will dump any pending events 8259 * and reset the sequence numbering. 8260 */ 8261 public void reset() { 8262 mNextTouchSequence = Long.MIN_VALUE + 1; 8263 mLastHandledTouchSequence = Long.MIN_VALUE; 8264 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 8265 while (mTouchEventQueue != null) { 8266 QueuedTouch recycleMe = mTouchEventQueue; 8267 mTouchEventQueue = mTouchEventQueue.mNext; 8268 recycleQueuedTouch(recycleMe); 8269 } 8270 while (mPreQueue != null) { 8271 QueuedTouch recycleMe = mPreQueue; 8272 mPreQueue = mPreQueue.mNext; 8273 recycleQueuedTouch(recycleMe); 8274 } 8275 } 8276 8277 /** 8278 * Return the next valid sequence number for tagging incoming touch events. 8279 * @return The next touch event sequence number 8280 */ 8281 public long nextTouchSequence() { 8282 return mNextTouchSequence++; 8283 } 8284 8285 /** 8286 * Enqueue a touch event in the form of TouchEventData. 8287 * The sequence number will be read from the mSequence field of the argument. 8288 * 8289 * If the touch event's sequence number is the next in line to be processed, it will 8290 * be handled before this method returns. Any subsequent events that have already 8291 * been queued will also be processed in their proper order. 8292 * 8293 * @param ted Touch data to be processed in order. 8294 * @return true if the event was processed before returning, false if it was just enqueued. 8295 */ 8296 public boolean enqueueTouchEvent(TouchEventData ted) { 8297 // Remove from the pre-queue if present 8298 QueuedTouch preQueue = mPreQueue; 8299 if (preQueue != null) { 8300 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 8301 // if it was present in the pre-queue, and removed from the pre-queue itself. 8302 if (preQueue.mSequence == ted.mSequence) { 8303 mPreQueue = preQueue.mNext; 8304 } else { 8305 QueuedTouch prev = preQueue; 8306 preQueue = null; 8307 while (prev.mNext != null) { 8308 if (prev.mNext.mSequence == ted.mSequence) { 8309 preQueue = prev.mNext; 8310 prev.mNext = preQueue.mNext; 8311 break; 8312 } else { 8313 prev = prev.mNext; 8314 } 8315 } 8316 } 8317 } 8318 8319 if (ted.mSequence < mLastHandledTouchSequence) { 8320 // Stale event and we already moved on; drop it. (Should not be common.) 8321 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 8322 " received from webcore; ignoring"); 8323 return false; 8324 } 8325 8326 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 8327 return false; 8328 } 8329 8330 // dropStaleGestures above might have fast-forwarded us to 8331 // an event we have already. 8332 runNextQueuedEvents(); 8333 8334 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 8335 if (preQueue != null) { 8336 recycleQueuedTouch(preQueue); 8337 preQueue = null; 8338 } 8339 handleQueuedTouchEventData(ted); 8340 8341 mLastHandledTouchSequence++; 8342 8343 // Do we have any more? Run them if so. 8344 runNextQueuedEvents(); 8345 } else { 8346 // Reuse the pre-queued object if we had it. 8347 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 8348 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8349 } 8350 return true; 8351 } 8352 8353 /** 8354 * Enqueue a touch event in the form of a MotionEvent from the framework. 8355 * 8356 * If the touch event's sequence number is the next in line to be processed, it will 8357 * be handled before this method returns. Any subsequent events that have already 8358 * been queued will also be processed in their proper order. 8359 * 8360 * @param ev MotionEvent to be processed in order 8361 */ 8362 public void enqueueTouchEvent(MotionEvent ev) { 8363 final long sequence = nextTouchSequence(); 8364 8365 if (dropStaleGestures(ev, sequence)) { 8366 return; 8367 } 8368 8369 // dropStaleGestures above might have fast-forwarded us to 8370 // an event we have already. 8371 runNextQueuedEvents(); 8372 8373 if (mLastHandledTouchSequence + 1 == sequence) { 8374 handleQueuedMotionEvent(ev); 8375 8376 mLastHandledTouchSequence++; 8377 8378 // Do we have any more? Run them if so. 8379 runNextQueuedEvents(); 8380 } else { 8381 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 8382 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8383 } 8384 } 8385 8386 private void runNextQueuedEvents() { 8387 QueuedTouch qd = mTouchEventQueue; 8388 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8389 handleQueuedTouch(qd); 8390 QueuedTouch recycleMe = qd; 8391 qd = qd.mNext; 8392 recycleQueuedTouch(recycleMe); 8393 mLastHandledTouchSequence++; 8394 } 8395 mTouchEventQueue = qd; 8396 } 8397 8398 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 8399 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 8400 // This is to make sure that we don't attempt to process a tap 8401 // or long press when webkit takes too long to get back to us. 8402 // The movement will be properly confirmed when we process the 8403 // enqueued event later. 8404 final int dx = Math.round(ev.getX()) - mLastTouchX; 8405 final int dy = Math.round(ev.getY()) - mLastTouchY; 8406 if (dx * dx + dy * dy > mTouchSlopSquare) { 8407 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 8408 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 8409 } 8410 } 8411 8412 if (mTouchEventQueue == null) { 8413 return sequence <= mLastHandledTouchSequence; 8414 } 8415 8416 // If we have a new down event and it's been a while since the last event 8417 // we saw, catch up as best we can and keep going. 8418 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 8419 long eventTime = ev.getEventTime(); 8420 long lastHandledEventTime = mLastEventTime; 8421 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 8422 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 8423 "Catching up."); 8424 runQueuedAndPreQueuedEvents(); 8425 8426 // Drop leftovers that we truly don't have. 8427 QueuedTouch qd = mTouchEventQueue; 8428 while (qd != null && qd.mSequence < sequence) { 8429 QueuedTouch recycleMe = qd; 8430 qd = qd.mNext; 8431 recycleQueuedTouch(recycleMe); 8432 } 8433 mTouchEventQueue = qd; 8434 mLastHandledTouchSequence = sequence - 1; 8435 } 8436 } 8437 8438 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 8439 QueuedTouch qd = mTouchEventQueue; 8440 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8441 QueuedTouch recycleMe = qd; 8442 qd = qd.mNext; 8443 recycleQueuedTouch(recycleMe); 8444 } 8445 mTouchEventQueue = qd; 8446 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 8447 } 8448 8449 if (mPreQueue != null) { 8450 // Drop stale prequeued events 8451 QueuedTouch qd = mPreQueue; 8452 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8453 QueuedTouch recycleMe = qd; 8454 qd = qd.mNext; 8455 recycleQueuedTouch(recycleMe); 8456 } 8457 mPreQueue = qd; 8458 } 8459 8460 return sequence <= mLastHandledTouchSequence; 8461 } 8462 8463 private void handleQueuedTouch(QueuedTouch qt) { 8464 if (qt.mTed != null) { 8465 handleQueuedTouchEventData(qt.mTed); 8466 } else { 8467 handleQueuedMotionEvent(qt.mEvent); 8468 qt.mEvent.recycle(); 8469 } 8470 } 8471 8472 private void handleQueuedMotionEvent(MotionEvent ev) { 8473 mLastEventTime = ev.getEventTime(); 8474 int action = ev.getActionMasked(); 8475 if (ev.getPointerCount() > 1) { // Multi-touch 8476 handleMultiTouchInWebView(ev); 8477 } else { 8478 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 8479 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 8480 // ScaleGestureDetector needs a consistent event stream to operate properly. 8481 // It won't take any action with fewer than two pointers, but it needs to 8482 // update internal bookkeeping state. 8483 detector.onTouchEvent(ev); 8484 } 8485 8486 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 8487 } 8488 } 8489 8490 private void handleQueuedTouchEventData(TouchEventData ted) { 8491 if (ted.mMotionEvent != null) { 8492 mLastEventTime = ted.mMotionEvent.getEventTime(); 8493 } 8494 if (!ted.mReprocess) { 8495 if (ted.mAction == MotionEvent.ACTION_DOWN 8496 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 8497 // if prevent default is called from WebCore, UI 8498 // will not handle the rest of the touch events any 8499 // more. 8500 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8501 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 8502 } else if (ted.mAction == MotionEvent.ACTION_MOVE 8503 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 8504 // the return for the first ACTION_MOVE will decide 8505 // whether UI will handle touch or not. Currently no 8506 // support for alternating prevent default 8507 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8508 : PREVENT_DEFAULT_NO; 8509 } 8510 if (mPreventDefault == PREVENT_DEFAULT_YES) { 8511 mTouchHighlightRegion.setEmpty(); 8512 } 8513 } else { 8514 if (ted.mPoints.length > 1) { // multi-touch 8515 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 8516 mPreventDefault = PREVENT_DEFAULT_NO; 8517 handleMultiTouchInWebView(ted.mMotionEvent); 8518 } else { 8519 mPreventDefault = PREVENT_DEFAULT_YES; 8520 } 8521 return; 8522 } 8523 8524 // prevent default is not called in WebCore, so the 8525 // message needs to be reprocessed in UI 8526 if (!ted.mNativeResult) { 8527 // Following is for single touch. 8528 switch (ted.mAction) { 8529 case MotionEvent.ACTION_DOWN: 8530 mLastDeferTouchX = ted.mPointsInView[0].x; 8531 mLastDeferTouchY = ted.mPointsInView[0].y; 8532 mDeferTouchMode = TOUCH_INIT_MODE; 8533 break; 8534 case MotionEvent.ACTION_MOVE: { 8535 // no snapping in defer process 8536 int x = ted.mPointsInView[0].x; 8537 int y = ted.mPointsInView[0].y; 8538 8539 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 8540 mDeferTouchMode = TOUCH_DRAG_MODE; 8541 mLastDeferTouchX = x; 8542 mLastDeferTouchY = y; 8543 startScrollingLayer(x, y); 8544 startDrag(); 8545 } 8546 int deltaX = pinLocX((int) (mScrollX 8547 + mLastDeferTouchX - x)) 8548 - mScrollX; 8549 int deltaY = pinLocY((int) (mScrollY 8550 + mLastDeferTouchY - y)) 8551 - mScrollY; 8552 doDrag(deltaX, deltaY); 8553 if (deltaX != 0) mLastDeferTouchX = x; 8554 if (deltaY != 0) mLastDeferTouchY = y; 8555 break; 8556 } 8557 case MotionEvent.ACTION_UP: 8558 case MotionEvent.ACTION_CANCEL: 8559 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 8560 // no fling in defer process 8561 mScroller.springBack(mScrollX, mScrollY, 0, 8562 computeMaxScrollX(), 0, 8563 computeMaxScrollY()); 8564 invalidate(); 8565 WebViewCore.resumePriority(); 8566 WebViewCore.resumeUpdatePicture(mWebViewCore); 8567 } 8568 mDeferTouchMode = TOUCH_DONE_MODE; 8569 break; 8570 case WebViewCore.ACTION_DOUBLETAP: 8571 // doDoubleTap() needs mLastTouchX/Y as anchor 8572 mLastDeferTouchX = ted.mPointsInView[0].x; 8573 mLastDeferTouchY = ted.mPointsInView[0].y; 8574 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 8575 mDeferTouchMode = TOUCH_DONE_MODE; 8576 break; 8577 case WebViewCore.ACTION_LONGPRESS: 8578 HitTestResult hitTest = getHitTestResult(); 8579 if (hitTest != null && hitTest.mType 8580 != HitTestResult.UNKNOWN_TYPE) { 8581 performLongClick(); 8582 } 8583 mDeferTouchMode = TOUCH_DONE_MODE; 8584 break; 8585 } 8586 } 8587 } 8588 } 8589 } 8590 8591 //------------------------------------------------------------------------- 8592 // Methods can be called from a separate thread, like WebViewCore 8593 // If it needs to call the View system, it has to send message. 8594 //------------------------------------------------------------------------- 8595 8596 /** 8597 * General handler to receive message coming from webkit thread 8598 */ 8599 class PrivateHandler extends Handler { 8600 @Override 8601 public void handleMessage(Message msg) { 8602 // exclude INVAL_RECT_MSG_ID since it is frequently output 8603 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 8604 if (msg.what >= FIRST_PRIVATE_MSG_ID 8605 && msg.what <= LAST_PRIVATE_MSG_ID) { 8606 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 8607 - FIRST_PRIVATE_MSG_ID]); 8608 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 8609 && msg.what <= LAST_PACKAGE_MSG_ID) { 8610 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 8611 - FIRST_PACKAGE_MSG_ID]); 8612 } else { 8613 Log.v(LOGTAG, Integer.toString(msg.what)); 8614 } 8615 } 8616 if (mWebViewCore == null) { 8617 // after WebView's destroy() is called, skip handling messages. 8618 return; 8619 } 8620 if (mBlockWebkitViewMessages 8621 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 8622 // Blocking messages from webkit 8623 return; 8624 } 8625 switch (msg.what) { 8626 case REMEMBER_PASSWORD: { 8627 mDatabase.setUsernamePassword( 8628 msg.getData().getString("host"), 8629 msg.getData().getString("username"), 8630 msg.getData().getString("password")); 8631 ((Message) msg.obj).sendToTarget(); 8632 break; 8633 } 8634 case NEVER_REMEMBER_PASSWORD: { 8635 mDatabase.setUsernamePassword( 8636 msg.getData().getString("host"), null, null); 8637 ((Message) msg.obj).sendToTarget(); 8638 break; 8639 } 8640 case PREVENT_DEFAULT_TIMEOUT: { 8641 // if timeout happens, cancel it so that it won't block UI 8642 // to continue handling touch events 8643 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8644 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8645 || (msg.arg1 == MotionEvent.ACTION_MOVE 8646 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8647 cancelWebCoreTouchEvent( 8648 viewToContentX(mLastTouchX + mScrollX), 8649 viewToContentY(mLastTouchY + mScrollY), 8650 true); 8651 } 8652 break; 8653 } 8654 case SCROLL_SELECT_TEXT: { 8655 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8656 mSentAutoScrollMessage = false; 8657 break; 8658 } 8659 if (mCurrentScrollingLayerId == 0) { 8660 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8661 } else { 8662 scrollLayerTo(mScrollingLayerRect.left + mAutoScrollX, 8663 mScrollingLayerRect.top + mAutoScrollY); 8664 } 8665 sendEmptyMessageDelayed( 8666 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8667 break; 8668 } 8669 case UPDATE_SELECTION: { 8670 if (mTouchMode == TOUCH_INIT_MODE 8671 || mTouchMode == TOUCH_SHORTPRESS_MODE 8672 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 8673 updateSelection(); 8674 } 8675 break; 8676 } 8677 case SWITCH_TO_SHORTPRESS: { 8678 if (mTouchMode == TOUCH_INIT_MODE) { 8679 if (!sDisableNavcache 8680 && mPreventDefault != PREVENT_DEFAULT_YES) { 8681 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8682 updateSelection(); 8683 } else { 8684 // set to TOUCH_SHORTPRESS_MODE so that it won't 8685 // trigger double tap any more 8686 mTouchMode = TOUCH_SHORTPRESS_MODE; 8687 } 8688 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8689 mTouchMode = TOUCH_DONE_MODE; 8690 } 8691 break; 8692 } 8693 case SWITCH_TO_LONGPRESS: { 8694 if (sDisableNavcache) { 8695 removeTouchHighlight(); 8696 } 8697 if (inFullScreenMode() || mDeferTouchProcess) { 8698 TouchEventData ted = new TouchEventData(); 8699 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8700 ted.mIds = new int[1]; 8701 ted.mIds[0] = 0; 8702 ted.mPoints = new Point[1]; 8703 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8704 viewToContentY(mLastTouchY + mScrollY)); 8705 ted.mPointsInView = new Point[1]; 8706 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8707 // metaState for long press is tricky. Should it be the 8708 // state when the press started or when the press was 8709 // released? Or some intermediary key state? For 8710 // simplicity for now, we don't set it. 8711 ted.mMetaState = 0; 8712 ted.mReprocess = mDeferTouchProcess; 8713 ted.mNativeLayer = nativeScrollableLayer( 8714 ted.mPoints[0].x, ted.mPoints[0].y, 8715 ted.mNativeLayerRect, null); 8716 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8717 mTouchEventQueue.preQueueTouchEventData(ted); 8718 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8719 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8720 mTouchMode = TOUCH_DONE_MODE; 8721 performLongClick(); 8722 } 8723 break; 8724 } 8725 case RELEASE_SINGLE_TAP: { 8726 doShortPress(); 8727 break; 8728 } 8729 case SCROLL_TO_MSG_ID: { 8730 // arg1 = animate, arg2 = onlyIfImeIsShowing 8731 // obj = Point(x, y) 8732 if (msg.arg2 == 1) { 8733 // This scroll is intended to bring the textfield into 8734 // view, but is only necessary if the IME is showing 8735 InputMethodManager imm = InputMethodManager.peekInstance(); 8736 if (imm == null || !imm.isAcceptingText() 8737 || (!imm.isActive(WebView.this) && (!inEditingMode() 8738 || !imm.isActive(mWebTextView)))) { 8739 break; 8740 } 8741 } 8742 final Point p = (Point) msg.obj; 8743 if (msg.arg1 == 1) { 8744 spawnContentScrollTo(p.x, p.y); 8745 } else { 8746 setContentScrollTo(p.x, p.y); 8747 } 8748 break; 8749 } 8750 case UPDATE_ZOOM_RANGE: { 8751 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8752 // mScrollX contains the new minPrefWidth 8753 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8754 break; 8755 } 8756 case UPDATE_ZOOM_DENSITY: { 8757 final float density = (Float) msg.obj; 8758 mZoomManager.updateDefaultZoomDensity(density); 8759 break; 8760 } 8761 case REPLACE_BASE_CONTENT: { 8762 nativeReplaceBaseContent(msg.arg1); 8763 break; 8764 } 8765 case NEW_PICTURE_MSG_ID: { 8766 // called for new content 8767 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8768 setNewPicture(draw, true); 8769 break; 8770 } 8771 case WEBCORE_INITIALIZED_MSG_ID: 8772 // nativeCreate sets mNativeClass to a non-zero value 8773 String drawableDir = BrowserFrame.getRawResFilename( 8774 BrowserFrame.DRAWABLEDIR, mContext); 8775 WindowManager windowManager = 8776 (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE); 8777 Display display = windowManager.getDefaultDisplay(); 8778 nativeCreate(msg.arg1, drawableDir, 8779 ActivityManager.isHighEndGfx(display)); 8780 if (mDelaySetPicture != null) { 8781 setNewPicture(mDelaySetPicture, true); 8782 mDelaySetPicture = null; 8783 } 8784 if (mIsPaused) { 8785 nativeSetPauseDrawing(mNativeClass, true); 8786 } 8787 break; 8788 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8789 // Make sure that the textfield is currently focused 8790 // and representing the same node as the pointer. 8791 if (msg.arg2 == mTextGeneration) { 8792 String text = (String) msg.obj; 8793 if (null == text) { 8794 text = ""; 8795 } 8796 if (inEditingMode() && 8797 mWebTextView.isSameTextField(msg.arg1)) { 8798 mWebTextView.setTextAndKeepSelection(text); 8799 } else if (mInputConnection != null && 8800 mFieldPointer == msg.arg1) { 8801 mInputConnection.setTextAndKeepSelection(text); 8802 } 8803 } 8804 break; 8805 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8806 displaySoftKeyboard(true); 8807 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8808 case UPDATE_TEXT_SELECTION_MSG_ID: 8809 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8810 (WebViewCore.TextSelectionData) msg.obj); 8811 break; 8812 case FORM_DID_BLUR: 8813 if (inEditingMode() 8814 && mWebTextView.isSameTextField(msg.arg1)) { 8815 hideSoftKeyboard(); 8816 } 8817 break; 8818 case RETURN_LABEL: 8819 if (inEditingMode() 8820 && mWebTextView.isSameTextField(msg.arg1)) { 8821 mWebTextView.setHint((String) msg.obj); 8822 InputMethodManager imm 8823 = InputMethodManager.peekInstance(); 8824 // The hint is propagated to the IME in 8825 // onCreateInputConnection. If the IME is already 8826 // active, restart it so that its hint text is updated. 8827 if (imm != null && imm.isActive(mWebTextView)) { 8828 imm.restartInput(mWebTextView); 8829 } 8830 } 8831 break; 8832 case UNHANDLED_NAV_KEY: 8833 navHandledKey(msg.arg1, 1, false, 0); 8834 break; 8835 case UPDATE_TEXT_ENTRY_MSG_ID: 8836 // this is sent after finishing resize in WebViewCore. Make 8837 // sure the text edit box is still on the screen. 8838 if (inEditingMode() && nativeCursorIsTextInput()) { 8839 updateWebTextViewPosition(); 8840 } 8841 break; 8842 case CLEAR_TEXT_ENTRY: 8843 clearTextEntry(); 8844 break; 8845 case INVAL_RECT_MSG_ID: { 8846 Rect r = (Rect)msg.obj; 8847 if (r == null) { 8848 invalidate(); 8849 } else { 8850 // we need to scale r from content into view coords, 8851 // which viewInvalidate() does for us 8852 viewInvalidate(r.left, r.top, r.right, r.bottom); 8853 } 8854 break; 8855 } 8856 case REQUEST_FORM_DATA: 8857 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8858 if (mWebTextView.isSameTextField(msg.arg1)) { 8859 mWebTextView.setAdapterCustom(adapter); 8860 } 8861 break; 8862 8863 case LONG_PRESS_CENTER: 8864 // as this is shared by keydown and trackballdown, reset all 8865 // the states 8866 mGotCenterDown = false; 8867 mTrackballDown = false; 8868 performLongClick(); 8869 break; 8870 8871 case WEBCORE_NEED_TOUCH_EVENTS: 8872 mForwardTouchEvents = (msg.arg1 != 0); 8873 break; 8874 8875 case PREVENT_TOUCH_ID: 8876 if (inFullScreenMode()) { 8877 break; 8878 } 8879 TouchEventData ted = (TouchEventData) msg.obj; 8880 8881 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8882 // WebCore is responding to us; remove pending timeout. 8883 // It will be re-posted when needed. 8884 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8885 } 8886 break; 8887 8888 case REQUEST_KEYBOARD: 8889 if (msg.arg1 == 0) { 8890 hideSoftKeyboard(); 8891 } else { 8892 displaySoftKeyboard(false); 8893 } 8894 break; 8895 8896 case DRAG_HELD_MOTIONLESS: 8897 mHeldMotionless = MOTIONLESS_TRUE; 8898 invalidate(); 8899 // fall through to keep scrollbars awake 8900 8901 case AWAKEN_SCROLL_BARS: 8902 if (mTouchMode == TOUCH_DRAG_MODE 8903 && mHeldMotionless == MOTIONLESS_TRUE) { 8904 awakenScrollBars(ViewConfiguration 8905 .getScrollDefaultDelay(), false); 8906 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8907 .obtainMessage(AWAKEN_SCROLL_BARS), 8908 ViewConfiguration.getScrollDefaultDelay()); 8909 } 8910 break; 8911 8912 case DO_MOTION_UP: 8913 doMotionUp(msg.arg1, msg.arg2); 8914 break; 8915 8916 case SCREEN_ON: 8917 setKeepScreenOn(msg.arg1 == 1); 8918 break; 8919 8920 case ENTER_FULLSCREEN_VIDEO: 8921 int layerId = msg.arg1; 8922 8923 String url = (String) msg.obj; 8924 if (mHTML5VideoViewProxy != null) { 8925 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8926 } 8927 break; 8928 8929 case EXIT_FULLSCREEN_VIDEO: 8930 if (mHTML5VideoViewProxy != null) { 8931 mHTML5VideoViewProxy.exitFullScreenVideo(); 8932 } 8933 break; 8934 8935 case SHOW_FULLSCREEN: { 8936 View view = (View) msg.obj; 8937 int orientation = msg.arg1; 8938 int npp = msg.arg2; 8939 8940 if (inFullScreenMode()) { 8941 Log.w(LOGTAG, "Should not have another full screen."); 8942 dismissFullScreenMode(); 8943 } 8944 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 8945 mFullScreenHolder.setContentView(view); 8946 mFullScreenHolder.show(); 8947 invalidate(); 8948 8949 break; 8950 } 8951 case HIDE_FULLSCREEN: 8952 dismissFullScreenMode(); 8953 break; 8954 8955 case DOM_FOCUS_CHANGED: 8956 if (inEditingMode()) { 8957 nativeClearCursor(); 8958 rebuildWebTextView(); 8959 } 8960 break; 8961 8962 case SHOW_RECT_MSG_ID: { 8963 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8964 int x = mScrollX; 8965 int left = contentToViewX(data.mLeft); 8966 int width = contentToViewDimension(data.mWidth); 8967 int maxWidth = contentToViewDimension(data.mContentWidth); 8968 int viewWidth = getViewWidth(); 8969 if (width < viewWidth) { 8970 // center align 8971 x += left + width / 2 - mScrollX - viewWidth / 2; 8972 } else { 8973 x += (int) (left + data.mXPercentInDoc * width 8974 - mScrollX - data.mXPercentInView * viewWidth); 8975 } 8976 if (DebugFlags.WEB_VIEW) { 8977 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8978 width + ",maxWidth=" + maxWidth + 8979 ",viewWidth=" + viewWidth + ",x=" 8980 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8981 ",xPercentInView=" + data.mXPercentInView+ ")"); 8982 } 8983 // use the passing content width to cap x as the current 8984 // mContentWidth may not be updated yet 8985 x = Math.max(0, 8986 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8987 int top = contentToViewY(data.mTop); 8988 int height = contentToViewDimension(data.mHeight); 8989 int maxHeight = contentToViewDimension(data.mContentHeight); 8990 int viewHeight = getViewHeight(); 8991 int y = (int) (top + data.mYPercentInDoc * height - 8992 data.mYPercentInView * viewHeight); 8993 if (DebugFlags.WEB_VIEW) { 8994 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8995 height + ",maxHeight=" + maxHeight + 8996 ",viewHeight=" + viewHeight + ",y=" 8997 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8998 ",yPercentInView=" + data.mYPercentInView+ ")"); 8999 } 9000 // use the passing content height to cap y as the current 9001 // mContentHeight may not be updated yet 9002 y = Math.max(0, 9003 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 9004 // We need to take into account the visible title height 9005 // when scrolling since y is an absolute view position. 9006 y = Math.max(0, y - getVisibleTitleHeightImpl()); 9007 scrollTo(x, y); 9008 } 9009 break; 9010 9011 case CENTER_FIT_RECT: 9012 centerFitRect((Rect)msg.obj); 9013 break; 9014 9015 case SET_SCROLLBAR_MODES: 9016 mHorizontalScrollBarMode = msg.arg1; 9017 mVerticalScrollBarMode = msg.arg2; 9018 break; 9019 9020 case SELECTION_STRING_CHANGED: 9021 if (mAccessibilityInjector != null) { 9022 String selectionString = (String) msg.obj; 9023 mAccessibilityInjector.onSelectionStringChange(selectionString); 9024 } 9025 break; 9026 9027 case HIT_TEST_RESULT: 9028 WebKitHitTest hit = (WebKitHitTest) msg.obj; 9029 mFocusedNode = hit; 9030 setTouchHighlightRects(hit); 9031 if (hit == null) { 9032 mInitialHitTestResult = null; 9033 } else { 9034 mInitialHitTestResult = new HitTestResult(); 9035 if (hit.mLinkUrl != null) { 9036 mInitialHitTestResult.mType = HitTestResult.SRC_ANCHOR_TYPE; 9037 mInitialHitTestResult.mExtra = hit.mLinkUrl; 9038 if (hit.mImageUrl != null) { 9039 mInitialHitTestResult.mType = HitTestResult.SRC_IMAGE_ANCHOR_TYPE; 9040 mInitialHitTestResult.mExtra = hit.mImageUrl; 9041 } 9042 } else if (hit.mImageUrl != null) { 9043 mInitialHitTestResult.mType = HitTestResult.IMAGE_TYPE; 9044 mInitialHitTestResult.mExtra = hit.mImageUrl; 9045 } else if (hit.mEditable) { 9046 mInitialHitTestResult.mType = HitTestResult.EDIT_TEXT_TYPE; 9047 } 9048 } 9049 break; 9050 9051 case SAVE_WEBARCHIVE_FINISHED: 9052 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 9053 if (saveMessage.mCallback != null) { 9054 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 9055 } 9056 break; 9057 9058 case SET_AUTOFILLABLE: 9059 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 9060 if (mWebTextView != null) { 9061 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 9062 rebuildWebTextView(); 9063 } 9064 break; 9065 9066 case AUTOFILL_COMPLETE: 9067 if (mWebTextView != null) { 9068 // Clear the WebTextView adapter when AutoFill finishes 9069 // so that the drop down gets cleared. 9070 mWebTextView.setAdapterCustom(null); 9071 } 9072 break; 9073 9074 case SELECT_AT: 9075 nativeSelectAt(msg.arg1, msg.arg2); 9076 break; 9077 9078 case COPY_TO_CLIPBOARD: 9079 copyToClipboard((String) msg.obj); 9080 break; 9081 9082 case INIT_EDIT_FIELD: 9083 if (mInputConnection != null) { 9084 mTextGeneration = 0; 9085 mFieldPointer = msg.arg1; 9086 mInputConnection.setTextAndKeepSelection((String) msg.obj); 9087 } 9088 break; 9089 9090 case REPLACE_TEXT:{ 9091 String text = (String)msg.obj; 9092 int start = msg.arg1; 9093 int end = msg.arg2; 9094 int cursorPosition = start + text.length(); 9095 replaceTextfieldText(start, end, text, 9096 cursorPosition, cursorPosition); 9097 break; 9098 } 9099 9100 case UPDATE_MATCH_COUNT: { 9101 if (mFindCallback != null) { 9102 mFindCallback.updateMatchCount(msg.arg1, msg.arg2, 9103 (String) msg.obj); 9104 } 9105 break; 9106 } 9107 9108 default: 9109 super.handleMessage(msg); 9110 break; 9111 } 9112 } 9113 } 9114 9115 private boolean shouldDrawHighlightRect() { 9116 if (mFocusedNode == null || mInitialHitTestResult == null) { 9117 return false; 9118 } 9119 if (mTouchHighlightRegion.isEmpty()) { 9120 return false; 9121 } 9122 if (mFocusedNode.mHasFocus) { 9123 return !mFocusedNode.mEditable; 9124 } 9125 if (mInitialHitTestResult.mType == HitTestResult.UNKNOWN_TYPE) { 9126 return false; 9127 } 9128 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 9129 if (delay < ViewConfiguration.getTapTimeout()) { 9130 Rect r = mTouchHighlightRegion.getBounds(); 9131 postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 9132 return false; 9133 } 9134 return true; 9135 } 9136 9137 9138 private FocusTransitionDrawable mFocusTransition = null; 9139 static class FocusTransitionDrawable extends Drawable { 9140 Region mPreviousRegion; 9141 Region mNewRegion; 9142 float mProgress = 0; 9143 WebView mWebView; 9144 Paint mPaint; 9145 int mMaxAlpha; 9146 Point mTranslate; 9147 9148 public FocusTransitionDrawable(WebView view) { 9149 mWebView = view; 9150 mPaint = new Paint(mWebView.mTouchHightlightPaint); 9151 mMaxAlpha = mPaint.getAlpha(); 9152 } 9153 9154 @Override 9155 public void setColorFilter(ColorFilter cf) { 9156 } 9157 9158 @Override 9159 public void setAlpha(int alpha) { 9160 } 9161 9162 @Override 9163 public int getOpacity() { 9164 return 0; 9165 } 9166 9167 public void setProgress(float p) { 9168 mProgress = p; 9169 if (mWebView.mFocusTransition == this) { 9170 if (mProgress == 1f) 9171 mWebView.mFocusTransition = null; 9172 mWebView.invalidate(); 9173 } 9174 } 9175 9176 public float getProgress() { 9177 return mProgress; 9178 } 9179 9180 @Override 9181 public void draw(Canvas canvas) { 9182 if (mTranslate == null) { 9183 Rect bounds = mPreviousRegion.getBounds(); 9184 Point from = new Point(bounds.centerX(), bounds.centerY()); 9185 mNewRegion.getBounds(bounds); 9186 Point to = new Point(bounds.centerX(), bounds.centerY()); 9187 mTranslate = new Point(from.x - to.x, from.y - to.y); 9188 } 9189 int alpha = (int) (mProgress * mMaxAlpha); 9190 RegionIterator iter = new RegionIterator(mPreviousRegion); 9191 Rect r = new Rect(); 9192 mPaint.setAlpha(mMaxAlpha - alpha); 9193 float tx = mTranslate.x * mProgress; 9194 float ty = mTranslate.y * mProgress; 9195 int save = canvas.save(Canvas.MATRIX_SAVE_FLAG); 9196 canvas.translate(-tx, -ty); 9197 while (iter.next(r)) { 9198 canvas.drawRect(r, mPaint); 9199 } 9200 canvas.restoreToCount(save); 9201 iter = new RegionIterator(mNewRegion); 9202 r = new Rect(); 9203 mPaint.setAlpha(alpha); 9204 save = canvas.save(Canvas.MATRIX_SAVE_FLAG); 9205 tx = mTranslate.x - tx; 9206 ty = mTranslate.y - ty; 9207 canvas.translate(tx, ty); 9208 while (iter.next(r)) { 9209 canvas.drawRect(r, mPaint); 9210 } 9211 canvas.restoreToCount(save); 9212 } 9213 }; 9214 9215 private boolean shouldAnimateTo(WebKitHitTest hit) { 9216 // TODO: Don't be annoying or throw out the animation entirely 9217 return false; 9218 } 9219 9220 private void setTouchHighlightRects(WebKitHitTest hit) { 9221 FocusTransitionDrawable transition = null; 9222 if (shouldAnimateTo(hit)) { 9223 transition = new FocusTransitionDrawable(this); 9224 } 9225 Rect[] rects = hit != null ? hit.mTouchRects : null; 9226 if (!mTouchHighlightRegion.isEmpty()) { 9227 invalidate(mTouchHighlightRegion.getBounds()); 9228 if (transition != null) { 9229 transition.mPreviousRegion = new Region(mTouchHighlightRegion); 9230 } 9231 mTouchHighlightRegion.setEmpty(); 9232 } 9233 if (rects != null) { 9234 mTouchHightlightPaint.setColor(hit.mTapHighlightColor); 9235 for (Rect rect : rects) { 9236 Rect viewRect = contentToViewRect(rect); 9237 // some sites, like stories in nytimes.com, set 9238 // mouse event handler in the top div. It is not 9239 // user friendly to highlight the div if it covers 9240 // more than half of the screen. 9241 if (viewRect.width() < getWidth() >> 1 9242 || viewRect.height() < getHeight() >> 1) { 9243 mTouchHighlightRegion.union(viewRect); 9244 } else { 9245 Log.w(LOGTAG, "Skip the huge selection rect:" 9246 + viewRect); 9247 } 9248 } 9249 invalidate(mTouchHighlightRegion.getBounds()); 9250 if (transition != null && transition.mPreviousRegion != null) { 9251 transition.mNewRegion = new Region(mTouchHighlightRegion); 9252 mFocusTransition = transition; 9253 ObjectAnimator animator = ObjectAnimator.ofFloat( 9254 mFocusTransition, "progress", 1f); 9255 animator.start(); 9256 } 9257 } 9258 } 9259 9260 /** @hide Called by JNI when pages are swapped (only occurs with hardware 9261 * acceleration) */ 9262 protected void pageSwapCallback(boolean notifyAnimationStarted) { 9263 mWebViewCore.resumeWebKitDraw(); 9264 if (inEditingMode()) { 9265 didUpdateWebTextViewDimensions(ANYWHERE); 9266 } 9267 if (notifyAnimationStarted) { 9268 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 9269 } 9270 } 9271 9272 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 9273 if (mNativeClass == 0) { 9274 if (mDelaySetPicture != null) { 9275 throw new IllegalStateException("Tried to setNewPicture with" 9276 + " a delay picture already set! (memory leak)"); 9277 } 9278 // Not initialized yet, delay set 9279 mDelaySetPicture = draw; 9280 return; 9281 } 9282 WebViewCore.ViewState viewState = draw.mViewState; 9283 boolean isPictureAfterFirstLayout = viewState != null; 9284 9285 if (updateBaseLayer) { 9286 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 9287 getSettings().getShowVisualIndicator(), 9288 isPictureAfterFirstLayout); 9289 } 9290 final Point viewSize = draw.mViewSize; 9291 // We update the layout (i.e. request a layout from the 9292 // view system) if the last view size that we sent to 9293 // WebCore matches the view size of the picture we just 9294 // received in the fixed dimension. 9295 final boolean updateLayout = viewSize.x == mLastWidthSent 9296 && viewSize.y == mLastHeightSent; 9297 // Don't send scroll event for picture coming from webkit, 9298 // since the new picture may cause a scroll event to override 9299 // the saved history scroll position. 9300 mSendScrollEvent = false; 9301 recordNewContentSize(draw.mContentSize.x, 9302 draw.mContentSize.y, updateLayout); 9303 if (isPictureAfterFirstLayout) { 9304 // Reset the last sent data here since dealing with new page. 9305 mLastWidthSent = 0; 9306 mZoomManager.onFirstLayout(draw); 9307 int scrollX = viewState.mShouldStartScrolledRight 9308 ? getContentWidth() : viewState.mScrollX; 9309 int scrollY = viewState.mScrollY; 9310 setContentScrollTo(scrollX, scrollY); 9311 if (!mDrawHistory) { 9312 // As we are on a new page, remove the WebTextView. This 9313 // is necessary for page loads driven by webkit, and in 9314 // particular when the user was on a password field, so 9315 // the WebTextView was visible. 9316 clearTextEntry(); 9317 } 9318 } 9319 mSendScrollEvent = true; 9320 9321 if (DebugFlags.WEB_VIEW) { 9322 Rect b = draw.mInvalRegion.getBounds(); 9323 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 9324 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 9325 } 9326 invalidateContentRect(draw.mInvalRegion.getBounds()); 9327 9328 if (mPictureListener != null) { 9329 mPictureListener.onNewPicture(WebView.this, capturePicture()); 9330 } 9331 9332 // update the zoom information based on the new picture 9333 mZoomManager.onNewPicture(draw); 9334 9335 if (draw.mFocusSizeChanged && inEditingMode()) { 9336 mFocusSizeChanged = true; 9337 } 9338 if (isPictureAfterFirstLayout) { 9339 mViewManager.postReadyToDrawAll(); 9340 } 9341 } 9342 9343 /** 9344 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 9345 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 9346 */ 9347 private void updateTextSelectionFromMessage(int nodePointer, 9348 int textGeneration, WebViewCore.TextSelectionData data) { 9349 if (textGeneration == mTextGeneration) { 9350 if (inEditingMode() 9351 && mWebTextView.isSameTextField(nodePointer)) { 9352 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 9353 } else if (mInputConnection != null && mFieldPointer == nodePointer) { 9354 mInputConnection.setSelection(data.mStart, data.mEnd); 9355 } 9356 } 9357 9358 nativeSetTextSelection(mNativeClass, data.mSelectTextPtr); 9359 if (data.mSelectTextPtr != 0) { 9360 if (!mSelectingText) { 9361 setupWebkitSelect(); 9362 } else if (!mSelectionStarted) { 9363 syncSelectionCursors(); 9364 } 9365 } else { 9366 selectionDone(); 9367 } 9368 invalidate(); 9369 } 9370 9371 // Class used to use a dropdown for a <select> element 9372 private class InvokeListBox implements Runnable { 9373 // Whether the listbox allows multiple selection. 9374 private boolean mMultiple; 9375 // Passed in to a list with multiple selection to tell 9376 // which items are selected. 9377 private int[] mSelectedArray; 9378 // Passed in to a list with single selection to tell 9379 // where the initial selection is. 9380 private int mSelection; 9381 9382 private Container[] mContainers; 9383 9384 // Need these to provide stable ids to my ArrayAdapter, 9385 // which normally does not have stable ids. (Bug 1250098) 9386 private class Container extends Object { 9387 /** 9388 * Possible values for mEnabled. Keep in sync with OptionStatus in 9389 * WebViewCore.cpp 9390 */ 9391 final static int OPTGROUP = -1; 9392 final static int OPTION_DISABLED = 0; 9393 final static int OPTION_ENABLED = 1; 9394 9395 String mString; 9396 int mEnabled; 9397 int mId; 9398 9399 @Override 9400 public String toString() { 9401 return mString; 9402 } 9403 } 9404 9405 /** 9406 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 9407 * and allow filtering. 9408 */ 9409 private class MyArrayListAdapter extends ArrayAdapter<Container> { 9410 public MyArrayListAdapter() { 9411 super(mContext, 9412 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 9413 com.android.internal.R.layout.webview_select_singlechoice, 9414 mContainers); 9415 } 9416 9417 @Override 9418 public View getView(int position, View convertView, 9419 ViewGroup parent) { 9420 // Always pass in null so that we will get a new CheckedTextView 9421 // Otherwise, an item which was previously used as an <optgroup> 9422 // element (i.e. has no check), could get used as an <option> 9423 // element, which needs a checkbox/radio, but it would not have 9424 // one. 9425 convertView = super.getView(position, null, parent); 9426 Container c = item(position); 9427 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 9428 // ListView does not draw dividers between disabled and 9429 // enabled elements. Use a LinearLayout to provide dividers 9430 LinearLayout layout = new LinearLayout(mContext); 9431 layout.setOrientation(LinearLayout.VERTICAL); 9432 if (position > 0) { 9433 View dividerTop = new View(mContext); 9434 dividerTop.setBackgroundResource( 9435 android.R.drawable.divider_horizontal_bright); 9436 layout.addView(dividerTop); 9437 } 9438 9439 if (Container.OPTGROUP == c.mEnabled) { 9440 // Currently select_dialog_multichoice uses CheckedTextViews. 9441 // If that changes, the class cast will no longer be valid. 9442 if (mMultiple) { 9443 Assert.assertTrue(convertView instanceof CheckedTextView); 9444 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 9445 } 9446 } else { 9447 // c.mEnabled == Container.OPTION_DISABLED 9448 // Draw the disabled element in a disabled state. 9449 convertView.setEnabled(false); 9450 } 9451 9452 layout.addView(convertView); 9453 if (position < getCount() - 1) { 9454 View dividerBottom = new View(mContext); 9455 dividerBottom.setBackgroundResource( 9456 android.R.drawable.divider_horizontal_bright); 9457 layout.addView(dividerBottom); 9458 } 9459 return layout; 9460 } 9461 return convertView; 9462 } 9463 9464 @Override 9465 public boolean hasStableIds() { 9466 // AdapterView's onChanged method uses this to determine whether 9467 // to restore the old state. Return false so that the old (out 9468 // of date) state does not replace the new, valid state. 9469 return false; 9470 } 9471 9472 private Container item(int position) { 9473 if (position < 0 || position >= getCount()) { 9474 return null; 9475 } 9476 return getItem(position); 9477 } 9478 9479 @Override 9480 public long getItemId(int position) { 9481 Container item = item(position); 9482 if (item == null) { 9483 return -1; 9484 } 9485 return item.mId; 9486 } 9487 9488 @Override 9489 public boolean areAllItemsEnabled() { 9490 return false; 9491 } 9492 9493 @Override 9494 public boolean isEnabled(int position) { 9495 Container item = item(position); 9496 if (item == null) { 9497 return false; 9498 } 9499 return Container.OPTION_ENABLED == item.mEnabled; 9500 } 9501 } 9502 9503 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 9504 mMultiple = true; 9505 mSelectedArray = selected; 9506 9507 int length = array.length; 9508 mContainers = new Container[length]; 9509 for (int i = 0; i < length; i++) { 9510 mContainers[i] = new Container(); 9511 mContainers[i].mString = array[i]; 9512 mContainers[i].mEnabled = enabled[i]; 9513 mContainers[i].mId = i; 9514 } 9515 } 9516 9517 private InvokeListBox(String[] array, int[] enabled, int selection) { 9518 mSelection = selection; 9519 mMultiple = false; 9520 9521 int length = array.length; 9522 mContainers = new Container[length]; 9523 for (int i = 0; i < length; i++) { 9524 mContainers[i] = new Container(); 9525 mContainers[i].mString = array[i]; 9526 mContainers[i].mEnabled = enabled[i]; 9527 mContainers[i].mId = i; 9528 } 9529 } 9530 9531 /* 9532 * Whenever the data set changes due to filtering, this class ensures 9533 * that the checked item remains checked. 9534 */ 9535 private class SingleDataSetObserver extends DataSetObserver { 9536 private long mCheckedId; 9537 private ListView mListView; 9538 private Adapter mAdapter; 9539 9540 /* 9541 * Create a new observer. 9542 * @param id The ID of the item to keep checked. 9543 * @param l ListView for getting and clearing the checked states 9544 * @param a Adapter for getting the IDs 9545 */ 9546 public SingleDataSetObserver(long id, ListView l, Adapter a) { 9547 mCheckedId = id; 9548 mListView = l; 9549 mAdapter = a; 9550 } 9551 9552 @Override 9553 public void onChanged() { 9554 // The filter may have changed which item is checked. Find the 9555 // item that the ListView thinks is checked. 9556 int position = mListView.getCheckedItemPosition(); 9557 long id = mAdapter.getItemId(position); 9558 if (mCheckedId != id) { 9559 // Clear the ListView's idea of the checked item, since 9560 // it is incorrect 9561 mListView.clearChoices(); 9562 // Search for mCheckedId. If it is in the filtered list, 9563 // mark it as checked 9564 int count = mAdapter.getCount(); 9565 for (int i = 0; i < count; i++) { 9566 if (mAdapter.getItemId(i) == mCheckedId) { 9567 mListView.setItemChecked(i, true); 9568 break; 9569 } 9570 } 9571 } 9572 } 9573 } 9574 9575 @Override 9576 public void run() { 9577 final ListView listView = (ListView) LayoutInflater.from(mContext) 9578 .inflate(com.android.internal.R.layout.select_dialog, null); 9579 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 9580 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 9581 .setView(listView).setCancelable(true) 9582 .setInverseBackgroundForced(true); 9583 9584 if (mMultiple) { 9585 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 9586 @Override 9587 public void onClick(DialogInterface dialog, int which) { 9588 mWebViewCore.sendMessage( 9589 EventHub.LISTBOX_CHOICES, 9590 adapter.getCount(), 0, 9591 listView.getCheckedItemPositions()); 9592 }}); 9593 b.setNegativeButton(android.R.string.cancel, 9594 new DialogInterface.OnClickListener() { 9595 @Override 9596 public void onClick(DialogInterface dialog, int which) { 9597 mWebViewCore.sendMessage( 9598 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9599 }}); 9600 } 9601 mListBoxDialog = b.create(); 9602 listView.setAdapter(adapter); 9603 listView.setFocusableInTouchMode(true); 9604 // There is a bug (1250103) where the checks in a ListView with 9605 // multiple items selected are associated with the positions, not 9606 // the ids, so the items do not properly retain their checks when 9607 // filtered. Do not allow filtering on multiple lists until 9608 // that bug is fixed. 9609 9610 listView.setTextFilterEnabled(!mMultiple); 9611 if (mMultiple) { 9612 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 9613 int length = mSelectedArray.length; 9614 for (int i = 0; i < length; i++) { 9615 listView.setItemChecked(mSelectedArray[i], true); 9616 } 9617 } else { 9618 listView.setOnItemClickListener(new OnItemClickListener() { 9619 @Override 9620 public void onItemClick(AdapterView<?> parent, View v, 9621 int position, long id) { 9622 // Rather than sending the message right away, send it 9623 // after the page regains focus. 9624 mListBoxMessage = Message.obtain(null, 9625 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 9626 mListBoxDialog.dismiss(); 9627 mListBoxDialog = null; 9628 } 9629 }); 9630 if (mSelection != -1) { 9631 listView.setSelection(mSelection); 9632 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 9633 listView.setItemChecked(mSelection, true); 9634 DataSetObserver observer = new SingleDataSetObserver( 9635 adapter.getItemId(mSelection), listView, adapter); 9636 adapter.registerDataSetObserver(observer); 9637 } 9638 } 9639 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 9640 @Override 9641 public void onCancel(DialogInterface dialog) { 9642 mWebViewCore.sendMessage( 9643 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9644 mListBoxDialog = null; 9645 } 9646 }); 9647 mListBoxDialog.show(); 9648 } 9649 } 9650 9651 private Message mListBoxMessage; 9652 9653 /* 9654 * Request a dropdown menu for a listbox with multiple selection. 9655 * 9656 * @param array Labels for the listbox. 9657 * @param enabledArray State for each element in the list. See static 9658 * integers in Container class. 9659 * @param selectedArray Which positions are initally selected. 9660 */ 9661 void requestListBox(String[] array, int[] enabledArray, int[] 9662 selectedArray) { 9663 mPrivateHandler.post( 9664 new InvokeListBox(array, enabledArray, selectedArray)); 9665 } 9666 9667 /* 9668 * Request a dropdown menu for a listbox with single selection or a single 9669 * <select> element. 9670 * 9671 * @param array Labels for the listbox. 9672 * @param enabledArray State for each element in the list. See static 9673 * integers in Container class. 9674 * @param selection Which position is initally selected. 9675 */ 9676 void requestListBox(String[] array, int[] enabledArray, int selection) { 9677 mPrivateHandler.post( 9678 new InvokeListBox(array, enabledArray, selection)); 9679 } 9680 9681 // called by JNI 9682 private void sendMoveFocus(int frame, int node) { 9683 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 9684 new WebViewCore.CursorData(frame, node, 0, 0)); 9685 } 9686 9687 // called by JNI 9688 private void sendMoveMouse(int frame, int node, int x, int y) { 9689 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 9690 new WebViewCore.CursorData(frame, node, x, y)); 9691 } 9692 9693 /* 9694 * Send a mouse move event to the webcore thread. 9695 * 9696 * @param removeFocus Pass true to remove the WebTextView, if present. 9697 * @param stopPaintingCaret Stop drawing the blinking caret if true. 9698 * called by JNI 9699 */ 9700 @SuppressWarnings("unused") 9701 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 9702 if (removeFocus) { 9703 clearTextEntry(); 9704 } 9705 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 9706 stopPaintingCaret ? 1 : 0, 0, 9707 cursorData()); 9708 } 9709 9710 /** 9711 * Called by JNI to send a message to the webcore thread that the user 9712 * touched the webpage. 9713 * @param touchGeneration Generation number of the touch, to ignore touches 9714 * after a new one has been generated. 9715 * @param frame Pointer to the frame holding the node that was touched. 9716 * @param node Pointer to the node touched. 9717 * @param x x-position of the touch. 9718 * @param y y-position of the touch. 9719 */ 9720 private void sendMotionUp(int touchGeneration, 9721 int frame, int node, int x, int y) { 9722 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 9723 touchUpData.mMoveGeneration = touchGeneration; 9724 touchUpData.mFrame = frame; 9725 touchUpData.mNode = node; 9726 touchUpData.mX = x; 9727 touchUpData.mY = y; 9728 touchUpData.mNativeLayer = nativeScrollableLayer( 9729 x, y, touchUpData.mNativeLayerRect, null); 9730 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 9731 } 9732 9733 9734 private int getScaledMaxXScroll() { 9735 int width; 9736 if (mHeightCanMeasure == false) { 9737 width = getViewWidth() / 4; 9738 } else { 9739 Rect visRect = new Rect(); 9740 calcOurVisibleRect(visRect); 9741 width = visRect.width() / 2; 9742 } 9743 // FIXME the divisor should be retrieved from somewhere 9744 return viewToContentX(width); 9745 } 9746 9747 private int getScaledMaxYScroll() { 9748 int height; 9749 if (mHeightCanMeasure == false) { 9750 height = getViewHeight() / 4; 9751 } else { 9752 Rect visRect = new Rect(); 9753 calcOurVisibleRect(visRect); 9754 height = visRect.height() / 2; 9755 } 9756 // FIXME the divisor should be retrieved from somewhere 9757 // the closest thing today is hard-coded into ScrollView.java 9758 // (from ScrollView.java, line 363) int maxJump = height/2; 9759 return Math.round(height * mZoomManager.getInvScale()); 9760 } 9761 9762 /** 9763 * Called by JNI to invalidate view 9764 */ 9765 private void viewInvalidate() { 9766 invalidate(); 9767 } 9768 9769 /** 9770 * Pass the key directly to the page. This assumes that 9771 * nativePageShouldHandleShiftAndArrows() returned true. 9772 */ 9773 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 9774 int keyEventAction; 9775 int eventHubAction; 9776 if (down) { 9777 keyEventAction = KeyEvent.ACTION_DOWN; 9778 eventHubAction = EventHub.KEY_DOWN; 9779 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 9780 } else { 9781 keyEventAction = KeyEvent.ACTION_UP; 9782 eventHubAction = EventHub.KEY_UP; 9783 } 9784 9785 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 9786 1, (metaState & KeyEvent.META_SHIFT_ON) 9787 | (metaState & KeyEvent.META_ALT_ON) 9788 | (metaState & KeyEvent.META_SYM_ON) 9789 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 9790 mWebViewCore.sendMessage(eventHubAction, event); 9791 } 9792 9793 // return true if the key was handled 9794 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 9795 long time) { 9796 if (mNativeClass == 0) { 9797 return false; 9798 } 9799 mInitialHitTestResult = null; 9800 mLastCursorTime = time; 9801 mLastCursorBounds = nativeGetCursorRingBounds(); 9802 boolean keyHandled 9803 = nativeMoveCursor(keyCode, count, noScroll) == false; 9804 if (DebugFlags.WEB_VIEW) { 9805 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 9806 + " mLastCursorTime=" + mLastCursorTime 9807 + " handled=" + keyHandled); 9808 } 9809 if (keyHandled == false) { 9810 return keyHandled; 9811 } 9812 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 9813 if (contentCursorRingBounds.isEmpty()) return keyHandled; 9814 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 9815 // set last touch so that context menu related functions will work 9816 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 9817 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 9818 if (mHeightCanMeasure == false) { 9819 return keyHandled; 9820 } 9821 Rect visRect = new Rect(); 9822 calcOurVisibleRect(visRect); 9823 Rect outset = new Rect(visRect); 9824 int maxXScroll = visRect.width() / 2; 9825 int maxYScroll = visRect.height() / 2; 9826 outset.inset(-maxXScroll, -maxYScroll); 9827 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 9828 return keyHandled; 9829 } 9830 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 9831 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 9832 maxXScroll); 9833 if (maxH > 0) { 9834 pinScrollBy(maxH, 0, true, 0); 9835 } else { 9836 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 9837 -maxXScroll); 9838 if (maxH < 0) { 9839 pinScrollBy(maxH, 0, true, 0); 9840 } 9841 } 9842 if (mLastCursorBounds.isEmpty()) return keyHandled; 9843 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 9844 return keyHandled; 9845 } 9846 if (DebugFlags.WEB_VIEW) { 9847 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 9848 + contentCursorRingBounds); 9849 } 9850 requestRectangleOnScreen(viewCursorRingBounds); 9851 return keyHandled; 9852 } 9853 9854 /** 9855 * @return Whether accessibility script has been injected. 9856 */ 9857 private boolean accessibilityScriptInjected() { 9858 // TODO: Maybe the injected script should announce its presence in 9859 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 9860 // will check that as one of the conditions it looks for 9861 return mAccessibilityScriptInjected; 9862 } 9863 9864 /** 9865 * Set the background color. It's white by default. Pass 9866 * zero to make the view transparent. 9867 * @param color the ARGB color described by Color.java 9868 */ 9869 @Override 9870 public void setBackgroundColor(int color) { 9871 mBackgroundColor = color; 9872 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 9873 } 9874 9875 /** 9876 * @deprecated This method is now obsolete. 9877 */ 9878 @Deprecated 9879 public void debugDump() { 9880 checkThread(); 9881 nativeDebugDump(); 9882 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 9883 } 9884 9885 /** 9886 * Draw the HTML page into the specified canvas. This call ignores any 9887 * view-specific zoom, scroll offset, or other changes. It does not draw 9888 * any view-specific chrome, such as progress or URL bars. 9889 * 9890 * @hide only needs to be accessible to Browser and testing 9891 */ 9892 public void drawPage(Canvas canvas) { 9893 calcOurContentVisibleRectF(mVisibleContentRect); 9894 nativeDraw(canvas, mVisibleContentRect, 0, 0, false); 9895 } 9896 9897 /** 9898 * Enable the communication b/t the webView and VideoViewProxy 9899 * 9900 * @hide only used by the Browser 9901 */ 9902 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 9903 mHTML5VideoViewProxy = proxy; 9904 } 9905 9906 /** 9907 * Set the time to wait between passing touches to WebCore. See also the 9908 * TOUCH_SENT_INTERVAL member for further discussion. 9909 * 9910 * @hide This is only used by the DRT test application. 9911 */ 9912 public void setTouchInterval(int interval) { 9913 mCurrentTouchInterval = interval; 9914 } 9915 9916 /** 9917 * Copy text into the clipboard. This is called indirectly from 9918 * WebViewCore. 9919 * @param text The text to put into the clipboard. 9920 */ 9921 private void copyToClipboard(String text) { 9922 ClipboardManager cm = (ClipboardManager)getContext() 9923 .getSystemService(Context.CLIPBOARD_SERVICE); 9924 ClipData clip = ClipData.newPlainText(getTitle(), text); 9925 cm.setPrimaryClip(clip); 9926 } 9927 9928 /** 9929 * Update our cache with updatedText. 9930 * @param updatedText The new text to put in our cache. 9931 * @hide 9932 */ 9933 protected void updateCachedTextfield(String updatedText) { 9934 // Also place our generation number so that when we look at the cache 9935 // we recognize that it is up to date. 9936 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 9937 } 9938 9939 /*package*/ void autoFillForm(int autoFillQueryId) { 9940 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 9941 } 9942 9943 /* package */ ViewManager getViewManager() { 9944 return mViewManager; 9945 } 9946 9947 private static void checkThread() { 9948 if (Looper.myLooper() != Looper.getMainLooper()) { 9949 Throwable throwable = new Throwable( 9950 "Warning: A WebView method was called on thread '" + 9951 Thread.currentThread().getName() + "'. " + 9952 "All WebView methods must be called on the UI thread. " + 9953 "Future versions of WebView may not support use on other threads."); 9954 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 9955 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 9956 } 9957 } 9958 9959 /** @hide send content invalidate */ 9960 protected void contentInvalidateAll() { 9961 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 9962 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 9963 } 9964 } 9965 9966 /** @hide discard all textures from tiles */ 9967 protected void discardAllTextures() { 9968 nativeDiscardAllTextures(); 9969 } 9970 9971 /** 9972 * Begin collecting per-tile profiling data 9973 * 9974 * @hide only used by profiling tests 9975 */ 9976 public void tileProfilingStart() { 9977 nativeTileProfilingStart(); 9978 } 9979 /** 9980 * Return per-tile profiling data 9981 * 9982 * @hide only used by profiling tests 9983 */ 9984 public float tileProfilingStop() { 9985 return nativeTileProfilingStop(); 9986 } 9987 9988 /** @hide only used by profiling tests */ 9989 public void tileProfilingClear() { 9990 nativeTileProfilingClear(); 9991 } 9992 /** @hide only used by profiling tests */ 9993 public int tileProfilingNumFrames() { 9994 return nativeTileProfilingNumFrames(); 9995 } 9996 /** @hide only used by profiling tests */ 9997 public int tileProfilingNumTilesInFrame(int frame) { 9998 return nativeTileProfilingNumTilesInFrame(frame); 9999 } 10000 /** @hide only used by profiling tests */ 10001 public int tileProfilingGetInt(int frame, int tile, String key) { 10002 return nativeTileProfilingGetInt(frame, tile, key); 10003 } 10004 /** @hide only used by profiling tests */ 10005 public float tileProfilingGetFloat(int frame, int tile, String key) { 10006 return nativeTileProfilingGetFloat(frame, tile, key); 10007 } 10008 10009 /** 10010 * Checks the focused content for an editable text field. This can be 10011 * text input or ContentEditable. 10012 * @return true if the focused item is an editable text field. 10013 */ 10014 boolean focusCandidateIsEditableText() { 10015 boolean isEditable = false; 10016 // TODO: reverse sDisableNavcache so that its name is positive 10017 boolean isNavcacheEnabled = !sDisableNavcache; 10018 if (isNavcacheEnabled) { 10019 isEditable = nativeFocusCandidateIsEditableText(mNativeClass); 10020 } else if (mFocusedNode != null) { 10021 isEditable = mFocusedNode.mEditable; 10022 } 10023 return isEditable; 10024 } 10025 10026 private native int nativeCacheHitFramePointer(); 10027 private native boolean nativeCacheHitIsPlugin(); 10028 private native Rect nativeCacheHitNodeBounds(); 10029 private native int nativeCacheHitNodePointer(); 10030 /* package */ native void nativeClearCursor(); 10031 private native void nativeCreate(int ptr, String drawableDir, boolean isHighEndGfx); 10032 private native int nativeCursorFramePointer(); 10033 private native Rect nativeCursorNodeBounds(); 10034 private native int nativeCursorNodePointer(); 10035 private native boolean nativeCursorIntersects(Rect visibleRect); 10036 private native boolean nativeCursorIsAnchor(); 10037 private native boolean nativeCursorIsTextInput(); 10038 private native Point nativeCursorPosition(); 10039 private native String nativeCursorText(); 10040 /** 10041 * Returns true if the native cursor node says it wants to handle key events 10042 * (ala plugins). This can only be called if mNativeClass is non-zero! 10043 */ 10044 private native boolean nativeCursorWantsKeyEvents(); 10045 private native void nativeDebugDump(); 10046 private native void nativeDestroy(); 10047 10048 /** 10049 * Draw the picture set with a background color and extra. If 10050 * "splitIfNeeded" is true and the return value is not 0, the return value 10051 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 10052 * native allocation can be freed. 10053 */ 10054 private native int nativeDraw(Canvas canvas, RectF visibleRect, 10055 int color, int extra, boolean splitIfNeeded); 10056 private native void nativeDumpDisplayTree(String urlOrNull); 10057 private native boolean nativeEvaluateLayersAnimations(int nativeInstance); 10058 private native int nativeGetDrawGLFunction(int nativeInstance, Rect rect, 10059 Rect viewRect, RectF visibleRect, float scale, int extras); 10060 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect, 10061 RectF visibleRect, float scale); 10062 private native void nativeExtendSelection(int x, int y); 10063 /* package */ native int nativeFocusCandidateFramePointer(); 10064 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 10065 /* package */ native boolean nativeFocusCandidateIsPassword(); 10066 private native boolean nativeFocusCandidateIsRtlText(); 10067 private native boolean nativeFocusCandidateIsTextInput(); 10068 private native boolean nativeFocusCandidateIsEditableText(int nativeClass); 10069 /* package */ native int nativeFocusCandidateMaxLength(); 10070 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 10071 /* package */ native boolean nativeFocusCandidateIsSpellcheck(); 10072 /* package */ native String nativeFocusCandidateName(); 10073 private native Rect nativeFocusCandidateNodeBounds(); 10074 /** 10075 * @return A Rect with left, top, right, bottom set to the corresponding 10076 * padding values in the focus candidate, if it is a textfield/textarea with 10077 * a style. Otherwise return null. This is not actually a rectangle; Rect 10078 * is being used to pass four integers. 10079 */ 10080 private native Rect nativeFocusCandidatePaddingRect(); 10081 /* package */ native int nativeFocusCandidatePointer(); 10082 private native String nativeFocusCandidateText(); 10083 /* package */ native float nativeFocusCandidateTextSize(); 10084 /* package */ native int nativeFocusCandidateLineHeight(); 10085 /** 10086 * Returns an integer corresponding to WebView.cpp::type. 10087 * See WebTextView.setType() 10088 */ 10089 private native int nativeFocusCandidateType(); 10090 private native int nativeFocusCandidateLayerId(); 10091 private native boolean nativeFocusIsPlugin(); 10092 private native Rect nativeFocusNodeBounds(); 10093 /* package */ native int nativeFocusNodePointer(); 10094 private native Rect nativeGetCursorRingBounds(); 10095 private native String nativeGetSelection(); 10096 private native boolean nativeHasCursorNode(); 10097 private native boolean nativeHasFocusNode(); 10098 private native void nativeHideCursor(); 10099 private native boolean nativeHitSelection(int x, int y); 10100 private native String nativeImageURI(int x, int y); 10101 private native Rect nativeLayerBounds(int layer); 10102 /* package */ native boolean nativeMoveCursorToNextTextInput(); 10103 // return true if the page has been scrolled 10104 private native boolean nativeMotionUp(int x, int y, int slop); 10105 // returns false if it handled the key 10106 private native boolean nativeMoveCursor(int keyCode, int count, 10107 boolean noScroll); 10108 private native int nativeMoveGeneration(); 10109 /** 10110 * @return true if the page should get the shift and arrow keys, rather 10111 * than select text/navigation. 10112 * 10113 * If the focus is a plugin, or if the focus and cursor match and are 10114 * a contentEditable element, then the page should handle these keys. 10115 */ 10116 private native boolean nativePageShouldHandleShiftAndArrows(); 10117 private native boolean nativePointInNavCache(int x, int y, int slop); 10118 private native void nativeSelectBestAt(Rect rect); 10119 private native void nativeSelectAt(int x, int y); 10120 private native void nativeSetExtendSelection(); 10121 private native void nativeSetFindIsUp(boolean isUp); 10122 private native void nativeSetHeightCanMeasure(boolean measure); 10123 private native boolean nativeSetBaseLayer(int nativeInstance, 10124 int layer, Region invalRegion, 10125 boolean showVisualIndicator, boolean isPictureAfterFirstLayout); 10126 private native int nativeGetBaseLayer(); 10127 private native void nativeShowCursorTimed(); 10128 private native void nativeReplaceBaseContent(int content); 10129 private native void nativeCopyBaseContentToPicture(Picture pict); 10130 private native boolean nativeHasContent(); 10131 private native void nativeSetSelectionPointer(int nativeInstance, 10132 boolean set, float scale, int x, int y); 10133 private native boolean nativeStartSelection(int x, int y); 10134 private native void nativeStopGL(); 10135 private native Rect nativeSubtractLayers(Rect content); 10136 private native int nativeTextGeneration(); 10137 private native void nativeDiscardAllTextures(); 10138 private native void nativeTileProfilingStart(); 10139 private native float nativeTileProfilingStop(); 10140 private native void nativeTileProfilingClear(); 10141 private native int nativeTileProfilingNumFrames(); 10142 private native int nativeTileProfilingNumTilesInFrame(int frame); 10143 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 10144 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 10145 // Never call this version except by updateCachedTextfield(String) - 10146 // we always want to pass in our generation number. 10147 private native void nativeUpdateCachedTextfield(String updatedText, 10148 int generation); 10149 private native boolean nativeWordSelection(int x, int y); 10150 // return NO_LEFTEDGE means failure. 10151 static final int NO_LEFTEDGE = -1; 10152 native int nativeGetBlockLeftEdge(int x, int y, float scale); 10153 10154 private native void nativeUseHardwareAccelSkia(boolean enabled); 10155 10156 // Returns a pointer to the scrollable LayerAndroid at the given point. 10157 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 10158 Rect scrollBounds); 10159 /** 10160 * Scroll the specified layer. 10161 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 10162 * @param newX Destination x position to which to scroll. 10163 * @param newY Destination y position to which to scroll. 10164 * @return True if the layer is successfully scrolled. 10165 */ 10166 private native boolean nativeScrollLayer(int layer, int newX, int newY); 10167 private native void nativeSetIsScrolling(boolean isScrolling); 10168 private native int nativeGetBackgroundColor(); 10169 native boolean nativeSetProperty(String key, String value); 10170 native String nativeGetProperty(String key); 10171 /** 10172 * See {@link ComponentCallbacks2} for the trim levels and descriptions 10173 */ 10174 private static native void nativeOnTrimMemory(int level); 10175 private static native void nativeSetPauseDrawing(int instance, boolean pause); 10176 private static native boolean nativeDisableNavcache(); 10177 private static native void nativeSetTextSelection(int instance, int selection); 10178 private static native int nativeGetHandleLayerId(int instance, int handle, 10179 Rect cursorLocation); 10180 private static native boolean nativeIsBaseFirst(int instance); 10181} 10182