WebView.java revision 913917449d4b5da28056a02b81fb49e73f98d9a1
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.ActivityManager; 21import android.app.AlertDialog; 22import android.content.BroadcastReceiver; 23import android.content.ClipData; 24import android.content.ClipboardManager; 25import android.content.ComponentCallbacks2; 26import android.content.Context; 27import android.content.DialogInterface; 28import android.content.DialogInterface.OnCancelListener; 29import android.content.Intent; 30import android.content.IntentFilter; 31import android.content.pm.PackageManager; 32import android.content.res.Configuration; 33import android.database.DataSetObserver; 34import android.graphics.Bitmap; 35import android.graphics.BitmapFactory; 36import android.graphics.BitmapShader; 37import android.graphics.Canvas; 38import android.graphics.Color; 39import android.graphics.DrawFilter; 40import android.graphics.Paint; 41import android.graphics.PaintFlagsDrawFilter; 42import android.graphics.Picture; 43import android.graphics.Point; 44import android.graphics.Rect; 45import android.graphics.RectF; 46import android.graphics.Region; 47import android.graphics.RegionIterator; 48import android.graphics.Shader; 49import android.graphics.drawable.Drawable; 50import android.net.Proxy; 51import android.net.ProxyProperties; 52import android.net.Uri; 53import android.net.http.SslCertificate; 54import android.os.AsyncTask; 55import android.os.Bundle; 56import android.os.Handler; 57import android.os.Looper; 58import android.os.Message; 59import android.os.StrictMode; 60import android.os.SystemClock; 61import android.provider.Settings; 62import android.speech.tts.TextToSpeech; 63import android.text.Editable; 64import android.text.InputType; 65import android.text.Selection; 66import android.text.TextUtils; 67import android.util.AttributeSet; 68import android.util.EventLog; 69import android.util.Log; 70import android.view.Display; 71import android.view.Gravity; 72import android.view.HapticFeedbackConstants; 73import android.view.HardwareCanvas; 74import android.view.InputDevice; 75import android.view.KeyCharacterMap; 76import android.view.KeyEvent; 77import android.view.LayoutInflater; 78import android.view.MotionEvent; 79import android.view.ScaleGestureDetector; 80import android.view.SoundEffectConstants; 81import android.view.VelocityTracker; 82import android.view.View; 83import android.view.ViewConfiguration; 84import android.view.ViewGroup; 85import android.view.ViewParent; 86import android.view.ViewTreeObserver; 87import android.view.WindowManager; 88import android.view.accessibility.AccessibilityEvent; 89import android.view.accessibility.AccessibilityManager; 90import android.view.accessibility.AccessibilityNodeInfo; 91import android.view.inputmethod.BaseInputConnection; 92import android.view.inputmethod.EditorInfo; 93import android.view.inputmethod.InputConnection; 94import android.view.inputmethod.InputMethodManager; 95import android.webkit.WebTextView.AutoCompleteAdapter; 96import android.webkit.WebViewCore.DrawData; 97import android.webkit.WebViewCore.EventHub; 98import android.webkit.WebViewCore.TouchEventData; 99import android.webkit.WebViewCore.TouchHighlightData; 100import android.webkit.WebViewCore.WebKitHitTest; 101import android.widget.AbsoluteLayout; 102import android.widget.Adapter; 103import android.widget.AdapterView; 104import android.widget.AdapterView.OnItemClickListener; 105import android.widget.ArrayAdapter; 106import android.widget.CheckedTextView; 107import android.widget.LinearLayout; 108import android.widget.ListView; 109import android.widget.OverScroller; 110import android.widget.Toast; 111 112import junit.framework.Assert; 113 114import java.io.File; 115import java.io.FileInputStream; 116import java.io.FileNotFoundException; 117import java.io.FileOutputStream; 118import java.io.IOException; 119import java.io.InputStream; 120import java.io.OutputStream; 121import java.net.URLDecoder; 122import java.util.ArrayList; 123import java.util.HashMap; 124import java.util.HashSet; 125import java.util.List; 126import java.util.Map; 127import java.util.Set; 128import java.util.Vector; 129import java.util.regex.Matcher; 130import java.util.regex.Pattern; 131 132/** 133 * <p>A View that displays web pages. This class is the basis upon which you 134 * can roll your own web browser or simply display some online content within your Activity. 135 * It uses the WebKit rendering engine to display 136 * web pages and includes methods to navigate forward and backward 137 * through a history, zoom in and out, perform text searches and more.</p> 138 * <p>To enable the built-in zoom, set 139 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 140 * (introduced in API version 3). 141 * <p>Note that, in order for your Activity to access the Internet and load web pages 142 * in a WebView, you must add the {@code INTERNET} permissions to your 143 * Android Manifest file:</p> 144 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 145 * 146 * <p>This must be a child of the <a 147 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 148 * element.</p> 149 * 150 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 151 * tutorial</a>.</p> 152 * 153 * <h3>Basic usage</h3> 154 * 155 * <p>By default, a WebView provides no browser-like widgets, does not 156 * enable JavaScript and web page errors are ignored. If your goal is only 157 * to display some HTML as a part of your UI, this is probably fine; 158 * the user won't need to interact with the web page beyond reading 159 * it, and the web page won't need to interact with the user. If you 160 * actually want a full-blown web browser, then you probably want to 161 * invoke the Browser application with a URL Intent rather than show it 162 * with a WebView. For example: 163 * <pre> 164 * Uri uri = Uri.parse("http://www.example.com"); 165 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 166 * startActivity(intent); 167 * </pre> 168 * <p>See {@link android.content.Intent} for more information.</p> 169 * 170 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 171 * or set the entire Activity window as a WebView during {@link 172 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 173 * <pre class="prettyprint"> 174 * WebView webview = new WebView(this); 175 * setContentView(webview); 176 * </pre> 177 * 178 * <p>Then load the desired web page:</p> 179 * <pre> 180 * // Simplest usage: note that an exception will NOT be thrown 181 * // if there is an error loading this page (see below). 182 * webview.loadUrl("http://slashdot.org/"); 183 * 184 * // OR, you can also load from an HTML string: 185 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 186 * webview.loadData(summary, "text/html", null); 187 * // ... although note that there are restrictions on what this HTML can do. 188 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 189 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 190 * </pre> 191 * 192 * <p>A WebView has several customization points where you can add your 193 * own behavior. These are:</p> 194 * 195 * <ul> 196 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 197 * This class is called when something that might impact a 198 * browser UI happens, for instance, progress updates and 199 * JavaScript alerts are sent here (see <a 200 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 201 * </li> 202 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 203 * It will be called when things happen that impact the 204 * rendering of the content, eg, errors or form submissions. You 205 * can also intercept URL loading here (via {@link 206 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 207 * shouldOverrideUrlLoading()}).</li> 208 * <li>Modifying the {@link android.webkit.WebSettings}, such as 209 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 210 * setJavaScriptEnabled()}. </li> 211 * <li>Injecting Java objects into the WebView using the 212 * {@link android.webkit.WebView#addJavascriptInterface} method. This 213 * method allows you to inject Java objects into a page's JavaScript 214 * context, so that they can be accessed by JavaScript in the page.</li> 215 * </ul> 216 * 217 * <p>Here's a more complicated example, showing error handling, 218 * settings, and progress notification:</p> 219 * 220 * <pre class="prettyprint"> 221 * // Let's display the progress in the activity title bar, like the 222 * // browser app does. 223 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 224 * 225 * webview.getSettings().setJavaScriptEnabled(true); 226 * 227 * final Activity activity = this; 228 * webview.setWebChromeClient(new WebChromeClient() { 229 * public void onProgressChanged(WebView view, int progress) { 230 * // Activities and WebViews measure progress with different scales. 231 * // The progress meter will automatically disappear when we reach 100% 232 * activity.setProgress(progress * 1000); 233 * } 234 * }); 235 * webview.setWebViewClient(new WebViewClient() { 236 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 237 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 238 * } 239 * }); 240 * 241 * webview.loadUrl("http://slashdot.org/"); 242 * </pre> 243 * 244 * <h3>Cookie and window management</h3> 245 * 246 * <p>For obvious security reasons, your application has its own 247 * cache, cookie store etc.—it does not share the Browser 248 * application's data. Cookies are managed on a separate thread, so 249 * operations like index building don't block the UI 250 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 251 * if you want to use cookies in your application. 252 * </p> 253 * 254 * <p>By default, requests by the HTML to open new windows are 255 * ignored. This is true whether they be opened by JavaScript or by 256 * the target attribute on a link. You can customize your 257 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 258 * and render them in whatever manner you want.</p> 259 * 260 * <p>The standard behavior for an Activity is to be destroyed and 261 * recreated when the device orientation or any other configuration changes. This will cause 262 * the WebView to reload the current page. If you don't want that, you 263 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 264 * changes, and then just leave the WebView alone. It'll automatically 265 * re-orient itself as appropriate. Read <a 266 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 267 * more information about how to handle configuration changes during runtime.</p> 268 * 269 * 270 * <h3>Building web pages to support different screen densities</h3> 271 * 272 * <p>The screen density of a device is based on the screen resolution. A screen with low density 273 * has fewer available pixels per inch, where a screen with high density 274 * has more — sometimes significantly more — pixels per inch. The density of a 275 * screen is important because, other things being equal, a UI element (such as a button) whose 276 * height and width are defined in terms of screen pixels will appear larger on the lower density 277 * screen and smaller on the higher density screen. 278 * For simplicity, Android collapses all actual screen densities into three generalized densities: 279 * high, medium, and low.</p> 280 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 281 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 282 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 283 * are bigger). 284 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 285 * you (as a web developer) target screens with different screen densities.</p> 286 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 287 * <ul> 288 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 289 * default scaling factor used for the current device. For example, if the value of {@code 290 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 291 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 292 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 293 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 294 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 295 * (discussed below), then you can stop this default scaling behavior.</li> 296 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 297 * densities for which this style sheet is to be used. The corresponding value should be either 298 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 299 * density, or high density screens, respectively. For example: 300 * <pre> 301 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 302 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 303 * which is the high density pixel ratio.</p> 304 * </li> 305 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 306 * this to specify the target density for which the web page is designed, using the following 307 * values: 308 * <ul> 309 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 310 * occurs.</li> 311 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 312 * as appropriate.</li> 313 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 314 * low density screens scale down. This is also the default behavior.</li> 315 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 316 * as appropriate.</li> 317 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 318 * values are 70-400).</li> 319 * </ul> 320 * <p>Here's an example meta tag to specify the target density:</p> 321 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 322 * </ul> 323 * <p>If you want to modify your web page for different densities, by using the {@code 324 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 325 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 326 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 327 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 328 * 329 * <h3>HTML5 Video support</h3> 330 * 331 * <p>In order to support inline HTML5 video in your application, you need to have hardware 332 * acceleration turned on, and set a {@link android.webkit.WebChromeClient}. For full screen support, 333 * implementations of {@link WebChromeClient#onShowCustomView(View, WebChromeClient.CustomViewCallback)} 334 * and {@link WebChromeClient#onHideCustomView()} are required, 335 * {@link WebChromeClient#getVideoLoadingProgressView()} is optional. 336 * </p> 337 * 338 * 339 */ 340@Widget 341public class WebView extends AbsoluteLayout 342 implements ViewTreeObserver.OnGlobalFocusChangeListener, 343 ViewGroup.OnHierarchyChangeListener { 344 345 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 346 @Override 347 public void onGlobalLayout() { 348 if (isShown()) { 349 setGLRectViewport(); 350 } 351 } 352 } 353 354 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 355 @Override 356 public void onScrollChanged() { 357 if (isShown()) { 358 setGLRectViewport(); 359 } 360 } 361 } 362 363 /** 364 * InputConnection used for ContentEditable. This captures changes 365 * to the text and sends them either as key strokes or text changes. 366 */ 367 private class WebViewInputConnection extends BaseInputConnection { 368 // Used for mapping characters to keys typed. 369 private KeyCharacterMap mKeyCharacterMap; 370 371 public WebViewInputConnection() { 372 super(WebView.this, true); 373 } 374 375 @Override 376 public boolean setComposingText(CharSequence text, int newCursorPosition) { 377 Editable editable = getEditable(); 378 int start = getComposingSpanStart(editable); 379 int end = getComposingSpanEnd(editable); 380 if (start < 0 || end < 0) { 381 start = Selection.getSelectionStart(editable); 382 end = Selection.getSelectionEnd(editable); 383 } 384 if (end < start) { 385 int temp = end; 386 end = start; 387 start = temp; 388 } 389 setNewText(start, end, text); 390 return super.setComposingText(text, newCursorPosition); 391 } 392 393 @Override 394 public boolean commitText(CharSequence text, int newCursorPosition) { 395 setComposingText(text, newCursorPosition); 396 finishComposingText(); 397 return true; 398 } 399 400 @Override 401 public boolean deleteSurroundingText(int leftLength, int rightLength) { 402 Editable editable = getEditable(); 403 int cursorPosition = Selection.getSelectionEnd(editable); 404 int startDelete = Math.max(0, cursorPosition - leftLength); 405 int endDelete = Math.min(editable.length(), 406 cursorPosition + rightLength); 407 setNewText(startDelete, endDelete, ""); 408 return super.deleteSurroundingText(leftLength, rightLength); 409 } 410 411 /** 412 * Sends a text change to webkit indirectly. If it is a single- 413 * character add or delete, it sends it as a key stroke. If it cannot 414 * be represented as a key stroke, it sends it as a field change. 415 * @param start The start offset (inclusive) of the text being changed. 416 * @param end The end offset (exclusive) of the text being changed. 417 * @param text The new text to replace the changed text. 418 */ 419 private void setNewText(int start, int end, CharSequence text) { 420 Editable editable = getEditable(); 421 CharSequence original = editable.subSequence(start, end); 422 boolean isCharacterAdd = false; 423 boolean isCharacterDelete = false; 424 int textLength = text.length(); 425 int originalLength = original.length(); 426 if (textLength > originalLength) { 427 isCharacterAdd = (textLength == originalLength + 1) 428 && TextUtils.regionMatches(text, 0, original, 0, 429 originalLength); 430 } else if (originalLength > textLength) { 431 isCharacterDelete = (textLength == originalLength - 1) 432 && TextUtils.regionMatches(text, 0, original, 0, 433 textLength); 434 } 435 if (isCharacterAdd) { 436 sendCharacter(text.charAt(textLength - 1)); 437 mTextGeneration++; 438 } else if (isCharacterDelete) { 439 sendDeleteKey(); 440 mTextGeneration++; 441 } else if (textLength != originalLength || 442 !TextUtils.regionMatches(text, 0, original, 0, 443 textLength)) { 444 // Send a message so that key strokes and text replacement 445 // do not come out of order. 446 Message replaceMessage = mPrivateHandler.obtainMessage( 447 REPLACE_TEXT, start, end, text.toString()); 448 mPrivateHandler.sendMessage(replaceMessage); 449 } 450 } 451 452 /** 453 * Send a single character to the WebView as a key down and up event. 454 * @param c The character to be sent. 455 */ 456 private void sendCharacter(char c) { 457 if (mKeyCharacterMap == null) { 458 mKeyCharacterMap = KeyCharacterMap.load(KeyCharacterMap.VIRTUAL_KEYBOARD); 459 } 460 char[] chars = new char[1]; 461 chars[0] = c; 462 KeyEvent[] events = mKeyCharacterMap.getEvents(chars); 463 if (events != null) { 464 for (KeyEvent event : events) { 465 sendKeyEvent(event); 466 } 467 } 468 } 469 470 /** 471 * Send the delete character as a key down and up event. 472 */ 473 private void sendDeleteKey() { 474 long eventTime = SystemClock.uptimeMillis(); 475 sendKeyEvent(new KeyEvent(eventTime, eventTime, 476 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL, 0, 0, 477 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 478 KeyEvent.FLAG_SOFT_KEYBOARD)); 479 sendKeyEvent(new KeyEvent(SystemClock.uptimeMillis(), eventTime, 480 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DEL, 0, 0, 481 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 482 KeyEvent.FLAG_SOFT_KEYBOARD)); 483 } 484 } 485 486 487 // The listener to capture global layout change event. 488 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 489 490 // The listener to capture scroll event. 491 private InnerScrollChangedListener mScrollChangedListener = null; 492 493 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 494 // the screen all-the-time. Good for profiling our drawing code 495 static private final boolean AUTO_REDRAW_HACK = false; 496 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 497 private boolean mAutoRedraw; 498 499 // Reference to the AlertDialog displayed by InvokeListBox. 500 // It's used to dismiss the dialog in destroy if not done before. 501 private AlertDialog mListBoxDialog = null; 502 503 static final String LOGTAG = "webview"; 504 505 private ZoomManager mZoomManager; 506 507 private final Rect mGLRectViewport = new Rect(); 508 private final Rect mViewRectViewport = new Rect(); 509 private final RectF mVisibleContentRect = new RectF(); 510 private boolean mGLViewportEmpty = false; 511 WebViewInputConnection mInputConnection = null; 512 513 514 /** 515 * Transportation object for returning WebView across thread boundaries. 516 */ 517 public class WebViewTransport { 518 private WebView mWebview; 519 520 /** 521 * Set the WebView to the transportation object. 522 * @param webview The WebView to transport. 523 */ 524 public synchronized void setWebView(WebView webview) { 525 mWebview = webview; 526 } 527 528 /** 529 * Return the WebView object. 530 * @return WebView The transported WebView object. 531 */ 532 public synchronized WebView getWebView() { 533 return mWebview; 534 } 535 } 536 537 private static class OnTrimMemoryListener implements ComponentCallbacks2 { 538 private static OnTrimMemoryListener sInstance = null; 539 540 static void init(Context c) { 541 if (sInstance == null) { 542 sInstance = new OnTrimMemoryListener(c.getApplicationContext()); 543 } 544 } 545 546 private OnTrimMemoryListener(Context c) { 547 c.registerComponentCallbacks(this); 548 } 549 550 @Override 551 public void onConfigurationChanged(Configuration newConfig) { 552 // Ignore 553 } 554 555 @Override 556 public void onLowMemory() { 557 // Ignore 558 } 559 560 @Override 561 public void onTrimMemory(int level) { 562 if (DebugFlags.WEB_VIEW) { 563 Log.d("WebView", "onTrimMemory: " + level); 564 } 565 WebView.nativeOnTrimMemory(level); 566 } 567 568 } 569 570 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 571 private final CallbackProxy mCallbackProxy; 572 573 private final WebViewDatabase mDatabase; 574 575 // SSL certificate for the main top-level page (if secure) 576 private SslCertificate mCertificate; 577 578 // Native WebView pointer that is 0 until the native object has been 579 // created. 580 private int mNativeClass; 581 // This would be final but it needs to be set to null when the WebView is 582 // destroyed. 583 private WebViewCore mWebViewCore; 584 // Handler for dispatching UI messages. 585 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 586 private WebTextView mWebTextView; 587 // Used to ignore changes to webkit text that arrives to the UI side after 588 // more key events. 589 private int mTextGeneration; 590 591 /* package */ void incrementTextGeneration() { mTextGeneration++; } 592 593 // Used by WebViewCore to create child views. 594 /* package */ final ViewManager mViewManager; 595 596 // Used to display in full screen mode 597 PluginFullScreenHolder mFullScreenHolder; 598 599 /** 600 * Position of the last touch event in pixels. 601 * Use integer to prevent loss of dragging delta calculation accuracy; 602 * which was done in float and converted to integer, and resulted in gradual 603 * and compounding touch position and view dragging mismatch. 604 */ 605 private int mLastTouchX; 606 private int mLastTouchY; 607 private int mStartTouchX; 608 private int mStartTouchY; 609 private float mAverageAngle; 610 611 /** 612 * Time of the last touch event. 613 */ 614 private long mLastTouchTime; 615 616 /** 617 * Time of the last time sending touch event to WebViewCore 618 */ 619 private long mLastSentTouchTime; 620 621 /** 622 * The minimum elapsed time before sending another ACTION_MOVE event to 623 * WebViewCore. This really should be tuned for each type of the devices. 624 * For example in Google Map api test case, it takes Dream device at least 625 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 626 * triggering the layout and drawing the picture. While the same process 627 * takes 60+ms on the current high speed device. If we make 628 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 629 * to WebViewCore queue and the real layout and draw events will be pushed 630 * to further, which slows down the refresh rate. Choose 50 to favor the 631 * current high speed devices. For Dream like devices, 100 is a better 632 * choice. Maybe make this in the buildspec later. 633 * (Update 12/14/2010: changed to 0 since current device should be able to 634 * handle the raw events and Map team voted to have the raw events too. 635 */ 636 private static final int TOUCH_SENT_INTERVAL = 0; 637 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 638 639 /** 640 * Helper class to get velocity for fling 641 */ 642 VelocityTracker mVelocityTracker; 643 private int mMaximumFling; 644 private float mLastVelocity; 645 private float mLastVelX; 646 private float mLastVelY; 647 648 // The id of the native layer being scrolled. 649 private int mCurrentScrollingLayerId; 650 private Rect mScrollingLayerRect = new Rect(); 651 652 // only trigger accelerated fling if the new velocity is at least 653 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 654 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 655 656 /** 657 * Touch mode 658 */ 659 private int mTouchMode = TOUCH_DONE_MODE; 660 private static final int TOUCH_INIT_MODE = 1; 661 private static final int TOUCH_DRAG_START_MODE = 2; 662 private static final int TOUCH_DRAG_MODE = 3; 663 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 664 private static final int TOUCH_SHORTPRESS_MODE = 5; 665 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 666 private static final int TOUCH_DONE_MODE = 7; 667 private static final int TOUCH_PINCH_DRAG = 8; 668 private static final int TOUCH_DRAG_LAYER_MODE = 9; 669 670 // Whether to forward the touch events to WebCore 671 // Can only be set by WebKit via JNI. 672 private boolean mForwardTouchEvents = false; 673 674 // Whether to prevent default during touch. The initial value depends on 675 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 676 // for touch down. Otherwise UI will wait for the answer of the first 677 // confirmed move before taking over the control. 678 private static final int PREVENT_DEFAULT_NO = 0; 679 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 680 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 681 private static final int PREVENT_DEFAULT_YES = 3; 682 private static final int PREVENT_DEFAULT_IGNORE = 4; 683 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 684 685 // true when the touch movement exceeds the slop 686 private boolean mConfirmMove; 687 688 // if true, touch events will be first processed by WebCore, if prevent 689 // default is not set, the UI will continue handle them. 690 private boolean mDeferTouchProcess; 691 692 // to avoid interfering with the current touch events, track them 693 // separately. Currently no snapping or fling in the deferred process mode 694 private int mDeferTouchMode = TOUCH_DONE_MODE; 695 private float mLastDeferTouchX; 696 private float mLastDeferTouchY; 697 698 // To keep track of whether the current drag was initiated by a WebTextView, 699 // so that we know not to hide the cursor 700 boolean mDragFromTextInput; 701 702 // Whether or not to draw the cursor ring. 703 private boolean mDrawCursorRing = true; 704 705 // true if onPause has been called (and not onResume) 706 private boolean mIsPaused; 707 708 private HitTestResult mInitialHitTestResult; 709 private WebKitHitTest mFocusedNode; 710 711 /** 712 * Customizable constant 713 */ 714 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 715 private int mTouchSlopSquare; 716 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 717 private int mDoubleTapSlopSquare; 718 // pre-computed density adjusted navigation slop 719 private int mNavSlop; 720 // This should be ViewConfiguration.getTapTimeout() 721 // But system time out is 100ms, which is too short for the browser. 722 // In the browser, if it switches out of tap too soon, jump tap won't work. 723 // In addition, a double tap on a trackpad will always have a duration of 724 // 300ms, so this value must be at least that (otherwise we will timeout the 725 // first tap and convert it to a long press). 726 private static final int TAP_TIMEOUT = 300; 727 // This should be ViewConfiguration.getLongPressTimeout() 728 // But system time out is 500ms, which is too short for the browser. 729 // With a short timeout, it's difficult to treat trigger a short press. 730 private static final int LONG_PRESS_TIMEOUT = 1000; 731 // needed to avoid flinging after a pause of no movement 732 private static final int MIN_FLING_TIME = 250; 733 // draw unfiltered after drag is held without movement 734 private static final int MOTIONLESS_TIME = 100; 735 // The amount of content to overlap between two screens when going through 736 // pages with the space bar, in pixels. 737 private static final int PAGE_SCROLL_OVERLAP = 24; 738 739 /** 740 * These prevent calling requestLayout if either dimension is fixed. This 741 * depends on the layout parameters and the measure specs. 742 */ 743 boolean mWidthCanMeasure; 744 boolean mHeightCanMeasure; 745 746 // Remember the last dimensions we sent to the native side so we can avoid 747 // sending the same dimensions more than once. 748 int mLastWidthSent; 749 int mLastHeightSent; 750 // Since view height sent to webkit could be fixed to avoid relayout, this 751 // value records the last sent actual view height. 752 int mLastActualHeightSent; 753 754 private int mContentWidth; // cache of value from WebViewCore 755 private int mContentHeight; // cache of value from WebViewCore 756 757 // Need to have the separate control for horizontal and vertical scrollbar 758 // style than the View's single scrollbar style 759 private boolean mOverlayHorizontalScrollbar = true; 760 private boolean mOverlayVerticalScrollbar = false; 761 762 // our standard speed. this way small distances will be traversed in less 763 // time than large distances, but we cap the duration, so that very large 764 // distances won't take too long to get there. 765 private static final int STD_SPEED = 480; // pixels per second 766 // time for the longest scroll animation 767 private static final int MAX_DURATION = 750; // milliseconds 768 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 769 770 // Used by OverScrollGlow 771 OverScroller mScroller; 772 773 private boolean mInOverScrollMode = false; 774 private static Paint mOverScrollBackground; 775 private static Paint mOverScrollBorder; 776 777 private boolean mWrapContent; 778 private static final int MOTIONLESS_FALSE = 0; 779 private static final int MOTIONLESS_PENDING = 1; 780 private static final int MOTIONLESS_TRUE = 2; 781 private static final int MOTIONLESS_IGNORE = 3; 782 private int mHeldMotionless; 783 784 // An instance for injecting accessibility in WebViews with disabled 785 // JavaScript or ones for which no accessibility script exists 786 private AccessibilityInjector mAccessibilityInjector; 787 788 // flag indicating if accessibility script is injected so we 789 // know to handle Shift and arrows natively first 790 private boolean mAccessibilityScriptInjected; 791 792 static final boolean USE_JAVA_TEXT_SELECTION = true; 793 static final boolean DEBUG_TEXT_HANDLES = false; 794 private Region mTextSelectionRegion = new Region(); 795 private Paint mTextSelectionPaint; 796 private Drawable mSelectHandleLeft; 797 private Drawable mSelectHandleRight; 798 799 static boolean sDisableNavcache = false; 800 // the color used to highlight the touch rectangles 801 static final int HIGHLIGHT_COLOR = 0x6633b5e5; 802 // the region indicating where the user touched on the screen 803 private Region mTouchHighlightRegion = new Region(); 804 // the paint for the touch highlight 805 private Paint mTouchHightlightPaint = new Paint(); 806 // debug only 807 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 808 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 809 private Paint mTouchCrossHairColor; 810 private int mTouchHighlightX; 811 private int mTouchHighlightY; 812 private long mTouchHighlightRequested; 813 814 // Basically this proxy is used to tell the Video to update layer tree at 815 // SetBaseLayer time and to pause when WebView paused. 816 private HTML5VideoViewProxy mHTML5VideoViewProxy; 817 818 // If we are using a set picture, don't send view updates to webkit 819 private boolean mBlockWebkitViewMessages = false; 820 821 // cached value used to determine if we need to switch drawing models 822 private boolean mHardwareAccelSkia = false; 823 824 /* 825 * Private message ids 826 */ 827 private static final int REMEMBER_PASSWORD = 1; 828 private static final int NEVER_REMEMBER_PASSWORD = 2; 829 private static final int SWITCH_TO_SHORTPRESS = 3; 830 private static final int SWITCH_TO_LONGPRESS = 4; 831 private static final int RELEASE_SINGLE_TAP = 5; 832 private static final int REQUEST_FORM_DATA = 6; 833 private static final int DRAG_HELD_MOTIONLESS = 8; 834 private static final int AWAKEN_SCROLL_BARS = 9; 835 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 836 private static final int SCROLL_SELECT_TEXT = 11; 837 838 839 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 840 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 841 842 /* 843 * Package message ids 844 */ 845 static final int SCROLL_TO_MSG_ID = 101; 846 static final int NEW_PICTURE_MSG_ID = 105; 847 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 848 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 849 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 850 static final int UPDATE_ZOOM_RANGE = 109; 851 static final int UNHANDLED_NAV_KEY = 110; 852 static final int CLEAR_TEXT_ENTRY = 111; 853 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 854 static final int SHOW_RECT_MSG_ID = 113; 855 static final int LONG_PRESS_CENTER = 114; 856 static final int PREVENT_TOUCH_ID = 115; 857 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 858 // obj=Rect in doc coordinates 859 static final int INVAL_RECT_MSG_ID = 117; 860 static final int REQUEST_KEYBOARD = 118; 861 static final int DO_MOTION_UP = 119; 862 static final int SHOW_FULLSCREEN = 120; 863 static final int HIDE_FULLSCREEN = 121; 864 static final int DOM_FOCUS_CHANGED = 122; 865 static final int REPLACE_BASE_CONTENT = 123; 866 static final int FORM_DID_BLUR = 124; 867 static final int RETURN_LABEL = 125; 868 static final int FIND_AGAIN = 126; 869 static final int CENTER_FIT_RECT = 127; 870 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 871 static final int SET_SCROLLBAR_MODES = 129; 872 static final int SELECTION_STRING_CHANGED = 130; 873 static final int HIT_TEST_RESULT = 131; 874 static final int SAVE_WEBARCHIVE_FINISHED = 132; 875 876 static final int SET_AUTOFILLABLE = 133; 877 static final int AUTOFILL_COMPLETE = 134; 878 879 static final int SELECT_AT = 135; 880 static final int SCREEN_ON = 136; 881 static final int ENTER_FULLSCREEN_VIDEO = 137; 882 static final int UPDATE_SELECTION = 138; 883 static final int UPDATE_ZOOM_DENSITY = 139; 884 static final int EXIT_FULLSCREEN_VIDEO = 140; 885 886 static final int COPY_TO_CLIPBOARD = 141; 887 static final int INIT_EDIT_FIELD = 142; 888 static final int REPLACE_TEXT = 143; 889 890 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 891 private static final int LAST_PACKAGE_MSG_ID = HIT_TEST_RESULT; 892 893 static final String[] HandlerPrivateDebugString = { 894 "REMEMBER_PASSWORD", // = 1; 895 "NEVER_REMEMBER_PASSWORD", // = 2; 896 "SWITCH_TO_SHORTPRESS", // = 3; 897 "SWITCH_TO_LONGPRESS", // = 4; 898 "RELEASE_SINGLE_TAP", // = 5; 899 "REQUEST_FORM_DATA", // = 6; 900 "RESUME_WEBCORE_PRIORITY", // = 7; 901 "DRAG_HELD_MOTIONLESS", // = 8; 902 "AWAKEN_SCROLL_BARS", // = 9; 903 "PREVENT_DEFAULT_TIMEOUT", // = 10; 904 "SCROLL_SELECT_TEXT" // = 11; 905 }; 906 907 static final String[] HandlerPackageDebugString = { 908 "SCROLL_TO_MSG_ID", // = 101; 909 "102", // = 102; 910 "103", // = 103; 911 "104", // = 104; 912 "NEW_PICTURE_MSG_ID", // = 105; 913 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 914 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 915 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 916 "UPDATE_ZOOM_RANGE", // = 109; 917 "UNHANDLED_NAV_KEY", // = 110; 918 "CLEAR_TEXT_ENTRY", // = 111; 919 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 920 "SHOW_RECT_MSG_ID", // = 113; 921 "LONG_PRESS_CENTER", // = 114; 922 "PREVENT_TOUCH_ID", // = 115; 923 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 924 "INVAL_RECT_MSG_ID", // = 117; 925 "REQUEST_KEYBOARD", // = 118; 926 "DO_MOTION_UP", // = 119; 927 "SHOW_FULLSCREEN", // = 120; 928 "HIDE_FULLSCREEN", // = 121; 929 "DOM_FOCUS_CHANGED", // = 122; 930 "REPLACE_BASE_CONTENT", // = 123; 931 "FORM_DID_BLUR", // = 124; 932 "RETURN_LABEL", // = 125; 933 "FIND_AGAIN", // = 126; 934 "CENTER_FIT_RECT", // = 127; 935 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 936 "SET_SCROLLBAR_MODES", // = 129; 937 "SELECTION_STRING_CHANGED", // = 130; 938 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 939 "SAVE_WEBARCHIVE_FINISHED", // = 132; 940 "SET_AUTOFILLABLE", // = 133; 941 "AUTOFILL_COMPLETE", // = 134; 942 "SELECT_AT", // = 135; 943 "SCREEN_ON", // = 136; 944 "ENTER_FULLSCREEN_VIDEO", // = 137; 945 "UPDATE_SELECTION", // = 138; 946 "UPDATE_ZOOM_DENSITY" // = 139; 947 }; 948 949 // If the site doesn't use the viewport meta tag to specify the viewport, 950 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 951 static final int DEFAULT_VIEWPORT_WIDTH = 980; 952 953 // normally we try to fit the content to the minimum preferred width 954 // calculated by the Webkit. To avoid the bad behavior when some site's 955 // minimum preferred width keeps growing when changing the viewport width or 956 // the minimum preferred width is huge, an upper limit is needed. 957 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 958 959 // initial scale in percent. 0 means using default. 960 private int mInitialScaleInPercent = 0; 961 962 // Whether or not a scroll event should be sent to webkit. This is only set 963 // to false when restoring the scroll position. 964 private boolean mSendScrollEvent = true; 965 966 private int mSnapScrollMode = SNAP_NONE; 967 private static final int SNAP_NONE = 0; 968 private static final int SNAP_LOCK = 1; // not a separate state 969 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 970 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 971 private boolean mSnapPositive; 972 973 // keep these in sync with their counterparts in WebView.cpp 974 private static final int DRAW_EXTRAS_NONE = 0; 975 private static final int DRAW_EXTRAS_FIND = 1; 976 private static final int DRAW_EXTRAS_SELECTION = 2; 977 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 978 979 // keep this in sync with WebCore:ScrollbarMode in WebKit 980 private static final int SCROLLBAR_AUTO = 0; 981 private static final int SCROLLBAR_ALWAYSOFF = 1; 982 // as we auto fade scrollbar, this is ignored. 983 private static final int SCROLLBAR_ALWAYSON = 2; 984 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 985 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 986 987 // constants for determining script injection strategy 988 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 989 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 990 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 991 992 // the alias via which accessibility JavaScript interface is exposed 993 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 994 995 // Template for JavaScript that injects a screen-reader. 996 private static final String ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE = 997 "javascript:(function() {" + 998 " var chooser = document.createElement('script');" + 999 " chooser.type = 'text/javascript';" + 1000 " chooser.src = '%1s';" + 1001 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 1002 " })();"; 1003 1004 // Regular expression that matches the "axs" URL parameter. 1005 // The value of 0 means the accessibility script is opted out 1006 // The value of 1 means the accessibility script is already injected 1007 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 1008 1009 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 1010 private TextToSpeech mTextToSpeech; 1011 1012 // variable to cache the above pattern in case accessibility is enabled. 1013 private Pattern mMatchAxsUrlParameterPattern; 1014 1015 /** 1016 * Max distance to overscroll by in pixels. 1017 * This how far content can be pulled beyond its normal bounds by the user. 1018 */ 1019 private int mOverscrollDistance; 1020 1021 /** 1022 * Max distance to overfling by in pixels. 1023 * This is how far flinged content can move beyond the end of its normal bounds. 1024 */ 1025 private int mOverflingDistance; 1026 1027 private OverScrollGlow mOverScrollGlow; 1028 1029 // Used to match key downs and key ups 1030 private Vector<Integer> mKeysPressed; 1031 1032 /* package */ static boolean mLogEvent = true; 1033 1034 // for event log 1035 private long mLastTouchUpTime = 0; 1036 1037 private WebViewCore.AutoFillData mAutoFillData; 1038 1039 private static boolean sNotificationsEnabled = true; 1040 1041 /** 1042 * URI scheme for telephone number 1043 */ 1044 public static final String SCHEME_TEL = "tel:"; 1045 /** 1046 * URI scheme for email address 1047 */ 1048 public static final String SCHEME_MAILTO = "mailto:"; 1049 /** 1050 * URI scheme for map address 1051 */ 1052 public static final String SCHEME_GEO = "geo:0,0?q="; 1053 1054 private int mBackgroundColor = Color.WHITE; 1055 1056 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 1057 private int mAutoScrollX = 0; 1058 private int mAutoScrollY = 0; 1059 private int mMinAutoScrollX = 0; 1060 private int mMaxAutoScrollX = 0; 1061 private int mMinAutoScrollY = 0; 1062 private int mMaxAutoScrollY = 0; 1063 private Rect mScrollingLayerBounds = new Rect(); 1064 private boolean mSentAutoScrollMessage = false; 1065 1066 // used for serializing asynchronously handled touch events. 1067 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 1068 1069 // Used to track whether picture updating was paused due to a window focus change. 1070 private boolean mPictureUpdatePausedForFocusChange = false; 1071 1072 // Used to notify listeners of a new picture. 1073 private PictureListener mPictureListener; 1074 /** 1075 * Interface to listen for new pictures as they change. 1076 * @deprecated This interface is now obsolete. 1077 */ 1078 @Deprecated 1079 public interface PictureListener { 1080 /** 1081 * Notify the listener that the picture has changed. 1082 * @param view The WebView that owns the picture. 1083 * @param picture The new picture. 1084 * @deprecated Due to internal changes, the picture does not include 1085 * composited layers such as fixed position elements or scrollable divs. 1086 * While the PictureListener API can still be used to detect changes in 1087 * the WebView content, you are advised against its usage until a replacement 1088 * is provided in a future Android release 1089 */ 1090 @Deprecated 1091 public void onNewPicture(WebView view, Picture picture); 1092 } 1093 1094 public static class HitTestResult { 1095 /** 1096 * Default HitTestResult, where the target is unknown 1097 */ 1098 public static final int UNKNOWN_TYPE = 0; 1099 /** 1100 * @deprecated This type is no longer used. 1101 */ 1102 @Deprecated 1103 public static final int ANCHOR_TYPE = 1; 1104 /** 1105 * HitTestResult for hitting a phone number 1106 */ 1107 public static final int PHONE_TYPE = 2; 1108 /** 1109 * HitTestResult for hitting a map address 1110 */ 1111 public static final int GEO_TYPE = 3; 1112 /** 1113 * HitTestResult for hitting an email address 1114 */ 1115 public static final int EMAIL_TYPE = 4; 1116 /** 1117 * HitTestResult for hitting an HTML::img tag 1118 */ 1119 public static final int IMAGE_TYPE = 5; 1120 /** 1121 * @deprecated This type is no longer used. 1122 */ 1123 @Deprecated 1124 public static final int IMAGE_ANCHOR_TYPE = 6; 1125 /** 1126 * HitTestResult for hitting a HTML::a tag with src=http 1127 */ 1128 public static final int SRC_ANCHOR_TYPE = 7; 1129 /** 1130 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 1131 */ 1132 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 1133 /** 1134 * HitTestResult for hitting an edit text area 1135 */ 1136 public static final int EDIT_TEXT_TYPE = 9; 1137 1138 private int mType; 1139 private String mExtra; 1140 1141 HitTestResult() { 1142 mType = UNKNOWN_TYPE; 1143 } 1144 1145 private void setType(int type) { 1146 mType = type; 1147 } 1148 1149 private void setExtra(String extra) { 1150 mExtra = extra; 1151 } 1152 1153 /** 1154 * Gets the type of the hit test result. 1155 * @return See the XXX_TYPE constants defined in this class. 1156 */ 1157 public int getType() { 1158 return mType; 1159 } 1160 1161 /** 1162 * Gets additional type-dependant information about the result, see 1163 * {@link WebView#getHitTestResult()} for details. 1164 * @return may either be null or contain extra information about this result. 1165 */ 1166 public String getExtra() { 1167 return mExtra; 1168 } 1169 } 1170 1171 /** 1172 * Refer to {@link WebView#requestFocusNodeHref(Message)} for more information 1173 */ 1174 static class FocusNodeHref { 1175 static final String TITLE = "title"; 1176 static final String URL = "url"; 1177 static final String SRC = "src"; 1178 } 1179 1180 /** 1181 * Construct a new WebView with a Context object. 1182 * @param context A Context object used to access application assets. 1183 */ 1184 public WebView(Context context) { 1185 this(context, null); 1186 } 1187 1188 /** 1189 * Construct a new WebView with layout parameters. 1190 * @param context A Context object used to access application assets. 1191 * @param attrs An AttributeSet passed to our parent. 1192 */ 1193 public WebView(Context context, AttributeSet attrs) { 1194 this(context, attrs, com.android.internal.R.attr.webViewStyle); 1195 } 1196 1197 /** 1198 * Construct a new WebView with layout parameters and a default style. 1199 * @param context A Context object used to access application assets. 1200 * @param attrs An AttributeSet passed to our parent. 1201 * @param defStyle The default style resource ID. 1202 */ 1203 public WebView(Context context, AttributeSet attrs, int defStyle) { 1204 this(context, attrs, defStyle, false); 1205 } 1206 1207 /** 1208 * Construct a new WebView with layout parameters and a default style. 1209 * @param context A Context object used to access application assets. 1210 * @param attrs An AttributeSet passed to our parent. 1211 * @param defStyle The default style resource ID. 1212 * @param privateBrowsing If true the web view will be initialized in private mode. 1213 */ 1214 public WebView(Context context, AttributeSet attrs, int defStyle, 1215 boolean privateBrowsing) { 1216 this(context, attrs, defStyle, null, privateBrowsing); 1217 } 1218 1219 /** 1220 * Construct a new WebView with layout parameters, a default style and a set 1221 * of custom Javscript interfaces to be added to the WebView at initialization 1222 * time. This guarantees that these interfaces will be available when the JS 1223 * context is initialized. 1224 * @param context A Context object used to access application assets. 1225 * @param attrs An AttributeSet passed to our parent. 1226 * @param defStyle The default style resource ID. 1227 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1228 * object implementing those interfaces, as values. 1229 * @param privateBrowsing If true the web view will be initialized in private mode. 1230 * @hide This is an implementation detail. 1231 */ 1232 protected WebView(Context context, AttributeSet attrs, int defStyle, 1233 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1234 super(context, attrs, defStyle); 1235 checkThread(); 1236 1237 if (context == null) { 1238 throw new IllegalArgumentException("Invalid context argument"); 1239 } 1240 1241 // Used by the chrome stack to find application paths 1242 JniUtil.setContext(context); 1243 1244 mCallbackProxy = new CallbackProxy(context, this); 1245 mViewManager = new ViewManager(this); 1246 L10nUtils.setApplicationContext(context.getApplicationContext()); 1247 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1248 mDatabase = WebViewDatabase.getInstance(context); 1249 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1250 mZoomManager = new ZoomManager(this, mCallbackProxy); 1251 1252 /* The init method must follow the creation of certain member variables, 1253 * such as the mZoomManager. 1254 */ 1255 init(); 1256 setupPackageListener(context); 1257 setupProxyListener(context); 1258 updateMultiTouchSupport(context); 1259 1260 if (privateBrowsing) { 1261 startPrivateBrowsing(); 1262 } 1263 1264 mAutoFillData = new WebViewCore.AutoFillData(); 1265 } 1266 1267 private static class ProxyReceiver extends BroadcastReceiver { 1268 @Override 1269 public void onReceive(Context context, Intent intent) { 1270 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1271 handleProxyBroadcast(intent); 1272 } 1273 } 1274 } 1275 1276 /* 1277 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1278 */ 1279 private static ProxyReceiver sProxyReceiver; 1280 1281 /* 1282 * @param context This method expects this to be a valid context 1283 */ 1284 private static synchronized void setupProxyListener(Context context) { 1285 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1286 return; 1287 } 1288 IntentFilter filter = new IntentFilter(); 1289 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1290 sProxyReceiver = new ProxyReceiver(); 1291 Intent currentProxy = context.getApplicationContext().registerReceiver( 1292 sProxyReceiver, filter); 1293 if (currentProxy != null) { 1294 handleProxyBroadcast(currentProxy); 1295 } 1296 } 1297 1298 /* 1299 * @param context This method expects this to be a valid context 1300 */ 1301 private static synchronized void disableProxyListener(Context context) { 1302 if (sProxyReceiver == null) 1303 return; 1304 1305 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1306 sProxyReceiver = null; 1307 } 1308 1309 private static void handleProxyBroadcast(Intent intent) { 1310 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1311 if (proxyProperties == null || proxyProperties.getHost() == null) { 1312 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1313 return; 1314 } 1315 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1316 } 1317 1318 /* 1319 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1320 * or ACTION_PACKAGE_REMOVED. 1321 */ 1322 private static boolean sPackageInstallationReceiverAdded = false; 1323 1324 /* 1325 * A set of Google packages we monitor for the 1326 * navigator.isApplicationInstalled() API. Add additional packages as 1327 * needed. 1328 */ 1329 private static Set<String> sGoogleApps; 1330 static { 1331 sGoogleApps = new HashSet<String>(); 1332 sGoogleApps.add("com.google.android.youtube"); 1333 } 1334 1335 private static class PackageListener extends BroadcastReceiver { 1336 @Override 1337 public void onReceive(Context context, Intent intent) { 1338 final String action = intent.getAction(); 1339 final String packageName = intent.getData().getSchemeSpecificPart(); 1340 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1341 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1342 // if it is replacing, refreshPlugins() when adding 1343 return; 1344 } 1345 1346 if (sGoogleApps.contains(packageName)) { 1347 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1348 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1349 } else { 1350 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1351 } 1352 } 1353 1354 PluginManager pm = PluginManager.getInstance(context); 1355 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1356 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1357 } 1358 } 1359 } 1360 1361 private void setupPackageListener(Context context) { 1362 1363 /* 1364 * we must synchronize the instance check and the creation of the 1365 * receiver to ensure that only ONE receiver exists for all WebView 1366 * instances. 1367 */ 1368 synchronized (WebView.class) { 1369 1370 // if the receiver already exists then we do not need to register it 1371 // again 1372 if (sPackageInstallationReceiverAdded) { 1373 return; 1374 } 1375 1376 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1377 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1378 filter.addDataScheme("package"); 1379 BroadcastReceiver packageListener = new PackageListener(); 1380 context.getApplicationContext().registerReceiver(packageListener, filter); 1381 sPackageInstallationReceiverAdded = true; 1382 } 1383 1384 // check if any of the monitored apps are already installed 1385 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1386 1387 @Override 1388 protected Set<String> doInBackground(Void... unused) { 1389 Set<String> installedPackages = new HashSet<String>(); 1390 PackageManager pm = mContext.getPackageManager(); 1391 for (String name : sGoogleApps) { 1392 try { 1393 pm.getPackageInfo(name, 1394 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1395 installedPackages.add(name); 1396 } catch (PackageManager.NameNotFoundException e) { 1397 // package not found 1398 } 1399 } 1400 return installedPackages; 1401 } 1402 1403 // Executes on the UI thread 1404 @Override 1405 protected void onPostExecute(Set<String> installedPackages) { 1406 if (mWebViewCore != null) { 1407 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1408 } 1409 } 1410 }; 1411 task.execute(); 1412 } 1413 1414 void updateMultiTouchSupport(Context context) { 1415 mZoomManager.updateMultiTouchSupport(context); 1416 } 1417 1418 private void init() { 1419 OnTrimMemoryListener.init(getContext()); 1420 sDisableNavcache = nativeDisableNavcache(); 1421 1422 setWillNotDraw(false); 1423 setFocusable(true); 1424 setFocusableInTouchMode(true); 1425 setClickable(true); 1426 setLongClickable(true); 1427 1428 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1429 int slop = configuration.getScaledTouchSlop(); 1430 mTouchSlopSquare = slop * slop; 1431 slop = configuration.getScaledDoubleTapSlop(); 1432 mDoubleTapSlopSquare = slop * slop; 1433 final float density = getContext().getResources().getDisplayMetrics().density; 1434 // use one line height, 16 based on our current default font, for how 1435 // far we allow a touch be away from the edge of a link 1436 mNavSlop = (int) (16 * density); 1437 mZoomManager.init(density); 1438 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1439 1440 // Compute the inverse of the density squared. 1441 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1442 1443 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1444 mOverflingDistance = configuration.getScaledOverflingDistance(); 1445 1446 setScrollBarStyle(super.getScrollBarStyle()); 1447 // Initially use a size of two, since the user is likely to only hold 1448 // down two keys at a time (shift + another key) 1449 mKeysPressed = new Vector<Integer>(2); 1450 mHTML5VideoViewProxy = null ; 1451 } 1452 1453 @Override 1454 public boolean shouldDelayChildPressedState() { 1455 return true; 1456 } 1457 1458 /** 1459 * Adds accessibility APIs to JavaScript. 1460 * 1461 * Note: This method is responsible to performing the necessary 1462 * check if the accessibility APIs should be exposed. 1463 */ 1464 private void addAccessibilityApisToJavaScript() { 1465 if (AccessibilityManager.getInstance(mContext).isEnabled() 1466 && getSettings().getJavaScriptEnabled()) { 1467 // exposing the TTS for now ... 1468 final Context ctx = getContext(); 1469 if (ctx != null) { 1470 final String packageName = ctx.getPackageName(); 1471 if (packageName != null) { 1472 mTextToSpeech = new TextToSpeech(getContext(), null, null, 1473 packageName + ".**webview**", true); 1474 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1475 } 1476 } 1477 } 1478 } 1479 1480 /** 1481 * Removes accessibility APIs from JavaScript. 1482 */ 1483 private void removeAccessibilityApisFromJavaScript() { 1484 // exposing the TTS for now ... 1485 if (mTextToSpeech != null) { 1486 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1487 mTextToSpeech.shutdown(); 1488 mTextToSpeech = null; 1489 } 1490 } 1491 1492 @Override 1493 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 1494 super.onInitializeAccessibilityNodeInfo(info); 1495 info.setScrollable(isScrollableForAccessibility()); 1496 } 1497 1498 @Override 1499 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 1500 super.onInitializeAccessibilityEvent(event); 1501 event.setScrollable(isScrollableForAccessibility()); 1502 event.setScrollX(mScrollX); 1503 event.setScrollY(mScrollY); 1504 final int convertedContentWidth = contentToViewX(getContentWidth()); 1505 final int adjustedViewWidth = getWidth() - mPaddingLeft - mPaddingRight; 1506 event.setMaxScrollX(Math.max(convertedContentWidth - adjustedViewWidth, 0)); 1507 final int convertedContentHeight = contentToViewY(getContentHeight()); 1508 final int adjustedViewHeight = getHeight() - mPaddingTop - mPaddingBottom; 1509 event.setMaxScrollY(Math.max(convertedContentHeight - adjustedViewHeight, 0)); 1510 } 1511 1512 private boolean isScrollableForAccessibility() { 1513 return (contentToViewX(getContentWidth()) > getWidth() - mPaddingLeft - mPaddingRight 1514 || contentToViewY(getContentHeight()) > getHeight() - mPaddingTop - mPaddingBottom); 1515 } 1516 1517 @Override 1518 public void setOverScrollMode(int mode) { 1519 super.setOverScrollMode(mode); 1520 if (mode != OVER_SCROLL_NEVER) { 1521 if (mOverScrollGlow == null) { 1522 mOverScrollGlow = new OverScrollGlow(this); 1523 } 1524 } else { 1525 mOverScrollGlow = null; 1526 } 1527 } 1528 1529 /* package */ void adjustDefaultZoomDensity(int zoomDensity) { 1530 final float density = mContext.getResources().getDisplayMetrics().density 1531 * 100 / zoomDensity; 1532 updateDefaultZoomDensity(density); 1533 } 1534 1535 /* package */ void updateDefaultZoomDensity(float density) { 1536 mNavSlop = (int) (16 * density); 1537 mZoomManager.updateDefaultZoomDensity(density); 1538 } 1539 1540 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1541 String password, final Message resumeMsg) { 1542 boolean rVal = false; 1543 if (resumeMsg == null) { 1544 // null resumeMsg implies saving password silently 1545 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1546 } else { 1547 final Message remember = mPrivateHandler.obtainMessage( 1548 REMEMBER_PASSWORD); 1549 remember.getData().putString("host", schemePlusHost); 1550 remember.getData().putString("username", username); 1551 remember.getData().putString("password", password); 1552 remember.obj = resumeMsg; 1553 1554 final Message neverRemember = mPrivateHandler.obtainMessage( 1555 NEVER_REMEMBER_PASSWORD); 1556 neverRemember.getData().putString("host", schemePlusHost); 1557 neverRemember.getData().putString("username", username); 1558 neverRemember.getData().putString("password", password); 1559 neverRemember.obj = resumeMsg; 1560 1561 new AlertDialog.Builder(getContext()) 1562 .setTitle(com.android.internal.R.string.save_password_label) 1563 .setMessage(com.android.internal.R.string.save_password_message) 1564 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1565 new DialogInterface.OnClickListener() { 1566 @Override 1567 public void onClick(DialogInterface dialog, int which) { 1568 resumeMsg.sendToTarget(); 1569 } 1570 }) 1571 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1572 new DialogInterface.OnClickListener() { 1573 @Override 1574 public void onClick(DialogInterface dialog, int which) { 1575 remember.sendToTarget(); 1576 } 1577 }) 1578 .setNegativeButton(com.android.internal.R.string.save_password_never, 1579 new DialogInterface.OnClickListener() { 1580 @Override 1581 public void onClick(DialogInterface dialog, int which) { 1582 neverRemember.sendToTarget(); 1583 } 1584 }) 1585 .setOnCancelListener(new OnCancelListener() { 1586 @Override 1587 public void onCancel(DialogInterface dialog) { 1588 resumeMsg.sendToTarget(); 1589 } 1590 }).show(); 1591 // Return true so that WebViewCore will pause while the dialog is 1592 // up. 1593 rVal = true; 1594 } 1595 return rVal; 1596 } 1597 1598 @Override 1599 public void setScrollBarStyle(int style) { 1600 if (style == View.SCROLLBARS_INSIDE_INSET 1601 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1602 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1603 } else { 1604 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1605 } 1606 super.setScrollBarStyle(style); 1607 } 1608 1609 /** 1610 * Specify whether the horizontal scrollbar has overlay style. 1611 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1612 */ 1613 public void setHorizontalScrollbarOverlay(boolean overlay) { 1614 checkThread(); 1615 mOverlayHorizontalScrollbar = overlay; 1616 } 1617 1618 /** 1619 * Specify whether the vertical scrollbar has overlay style. 1620 * @param overlay TRUE if vertical scrollbar should have overlay style. 1621 */ 1622 public void setVerticalScrollbarOverlay(boolean overlay) { 1623 checkThread(); 1624 mOverlayVerticalScrollbar = overlay; 1625 } 1626 1627 /** 1628 * Return whether horizontal scrollbar has overlay style 1629 * @return TRUE if horizontal scrollbar has overlay style. 1630 */ 1631 public boolean overlayHorizontalScrollbar() { 1632 checkThread(); 1633 return mOverlayHorizontalScrollbar; 1634 } 1635 1636 /** 1637 * Return whether vertical scrollbar has overlay style 1638 * @return TRUE if vertical scrollbar has overlay style. 1639 */ 1640 public boolean overlayVerticalScrollbar() { 1641 checkThread(); 1642 return mOverlayVerticalScrollbar; 1643 } 1644 1645 /* 1646 * Return the width of the view where the content of WebView should render 1647 * to. 1648 * Note: this can be called from WebCoreThread. 1649 */ 1650 /* package */ int getViewWidth() { 1651 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1652 return getWidth(); 1653 } else { 1654 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1655 } 1656 } 1657 1658 /** 1659 * returns the height of the titlebarview (if any). Does not care about 1660 * scrolling 1661 * @hide 1662 */ 1663 protected int getTitleHeight() { 1664 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1665 } 1666 1667 /** 1668 * Return the amount of the titlebarview (if any) that is visible 1669 * 1670 * @deprecated This method is now obsolete. 1671 */ 1672 @Deprecated 1673 public int getVisibleTitleHeight() { 1674 checkThread(); 1675 return getVisibleTitleHeightImpl(); 1676 } 1677 1678 private int getVisibleTitleHeightImpl() { 1679 // need to restrict mScrollY due to over scroll 1680 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 1681 getOverlappingActionModeHeight()); 1682 } 1683 1684 private int mCachedOverlappingActionModeHeight = -1; 1685 1686 private int getOverlappingActionModeHeight() { 1687 if (mFindCallback == null) { 1688 return 0; 1689 } 1690 if (mCachedOverlappingActionModeHeight < 0) { 1691 getGlobalVisibleRect(mGlobalVisibleRect, mGlobalVisibleOffset); 1692 mCachedOverlappingActionModeHeight = Math.max(0, 1693 mFindCallback.getActionModeGlobalBottom() - mGlobalVisibleRect.top); 1694 } 1695 return mCachedOverlappingActionModeHeight; 1696 } 1697 1698 /* 1699 * Return the height of the view where the content of WebView should render 1700 * to. Note that this excludes mTitleBar, if there is one. 1701 * Note: this can be called from WebCoreThread. 1702 */ 1703 /* package */ int getViewHeight() { 1704 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1705 } 1706 1707 int getViewHeightWithTitle() { 1708 int height = getHeight(); 1709 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1710 height -= getHorizontalScrollbarHeight(); 1711 } 1712 return height; 1713 } 1714 1715 /** 1716 * @return The SSL certificate for the main top-level page or null if 1717 * there is no certificate (the site is not secure). 1718 */ 1719 public SslCertificate getCertificate() { 1720 checkThread(); 1721 return mCertificate; 1722 } 1723 1724 /** 1725 * Sets the SSL certificate for the main top-level page. 1726 */ 1727 public void setCertificate(SslCertificate certificate) { 1728 checkThread(); 1729 if (DebugFlags.WEB_VIEW) { 1730 Log.v(LOGTAG, "setCertificate=" + certificate); 1731 } 1732 // here, the certificate can be null (if the site is not secure) 1733 mCertificate = certificate; 1734 } 1735 1736 //------------------------------------------------------------------------- 1737 // Methods called by activity 1738 //------------------------------------------------------------------------- 1739 1740 /** 1741 * Save the username and password for a particular host in the WebView's 1742 * internal database. 1743 * @param host The host that required the credentials. 1744 * @param username The username for the given host. 1745 * @param password The password for the given host. 1746 */ 1747 public void savePassword(String host, String username, String password) { 1748 checkThread(); 1749 mDatabase.setUsernamePassword(host, username, password); 1750 } 1751 1752 /** 1753 * Set the HTTP authentication credentials for a given host and realm. 1754 * 1755 * @param host The host for the credentials. 1756 * @param realm The realm for the credentials. 1757 * @param username The username for the password. If it is null, it means 1758 * password can't be saved. 1759 * @param password The password 1760 */ 1761 public void setHttpAuthUsernamePassword(String host, String realm, 1762 String username, String password) { 1763 checkThread(); 1764 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1765 } 1766 1767 /** 1768 * Retrieve the HTTP authentication username and password for a given 1769 * host & realm pair 1770 * 1771 * @param host The host for which the credentials apply. 1772 * @param realm The realm for which the credentials apply. 1773 * @return String[] if found, String[0] is username, which can be null and 1774 * String[1] is password. Return null if it can't find anything. 1775 */ 1776 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1777 checkThread(); 1778 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1779 } 1780 1781 /** 1782 * Remove Find or Select ActionModes, if active. 1783 */ 1784 private void clearActionModes() { 1785 if (mSelectCallback != null) { 1786 mSelectCallback.finish(); 1787 } 1788 if (mFindCallback != null) { 1789 mFindCallback.finish(); 1790 } 1791 } 1792 1793 /** 1794 * Called to clear state when moving from one page to another, or changing 1795 * in some other way that makes elements associated with the current page 1796 * (such as WebTextView or ActionModes) no longer relevant. 1797 */ 1798 private void clearHelpers() { 1799 clearTextEntry(); 1800 clearActionModes(); 1801 dismissFullScreenMode(); 1802 cancelSelectDialog(); 1803 } 1804 1805 private void cancelSelectDialog() { 1806 if (mListBoxDialog != null) { 1807 mListBoxDialog.cancel(); 1808 mListBoxDialog = null; 1809 } 1810 } 1811 1812 /** 1813 * Destroy the internal state of the WebView. This method should be called 1814 * after the WebView has been removed from the view system. No other 1815 * methods may be called on a WebView after destroy. 1816 */ 1817 public void destroy() { 1818 checkThread(); 1819 destroyImpl(); 1820 } 1821 1822 private void destroyImpl() { 1823 clearHelpers(); 1824 if (mListBoxDialog != null) { 1825 mListBoxDialog.dismiss(); 1826 mListBoxDialog = null; 1827 } 1828 // remove so that it doesn't cause events 1829 if (mWebTextView != null) { 1830 mWebTextView.remove(); 1831 mWebTextView = null; 1832 } 1833 if (mNativeClass != 0) nativeStopGL(); 1834 if (mWebViewCore != null) { 1835 // Set the handlers to null before destroying WebViewCore so no 1836 // more messages will be posted. 1837 mCallbackProxy.setWebViewClient(null); 1838 mCallbackProxy.setWebChromeClient(null); 1839 // Tell WebViewCore to destroy itself 1840 synchronized (this) { 1841 WebViewCore webViewCore = mWebViewCore; 1842 mWebViewCore = null; // prevent using partial webViewCore 1843 webViewCore.destroy(); 1844 } 1845 // Remove any pending messages that might not be serviced yet. 1846 mPrivateHandler.removeCallbacksAndMessages(null); 1847 mCallbackProxy.removeCallbacksAndMessages(null); 1848 // Wake up the WebCore thread just in case it is waiting for a 1849 // JavaScript dialog. 1850 synchronized (mCallbackProxy) { 1851 mCallbackProxy.notify(); 1852 } 1853 } 1854 if (mNativeClass != 0) { 1855 nativeDestroy(); 1856 mNativeClass = 0; 1857 } 1858 } 1859 1860 /** 1861 * Enables platform notifications of data state and proxy changes. 1862 * Notifications are enabled by default. 1863 * 1864 * @deprecated This method is now obsolete. 1865 */ 1866 @Deprecated 1867 public static void enablePlatformNotifications() { 1868 checkThread(); 1869 synchronized (WebView.class) { 1870 Network.enablePlatformNotifications(); 1871 sNotificationsEnabled = true; 1872 Context context = JniUtil.getContext(); 1873 if (context != null) 1874 setupProxyListener(context); 1875 } 1876 } 1877 1878 /** 1879 * Disables platform notifications of data state and proxy changes. 1880 * Notifications are enabled by default. 1881 * 1882 * @deprecated This method is now obsolete. 1883 */ 1884 @Deprecated 1885 public static void disablePlatformNotifications() { 1886 checkThread(); 1887 synchronized (WebView.class) { 1888 Network.disablePlatformNotifications(); 1889 sNotificationsEnabled = false; 1890 Context context = JniUtil.getContext(); 1891 if (context != null) 1892 disableProxyListener(context); 1893 } 1894 } 1895 1896 /** 1897 * Sets JavaScript engine flags. 1898 * 1899 * @param flags JS engine flags in a String 1900 * 1901 * @hide This is an implementation detail. 1902 */ 1903 public void setJsFlags(String flags) { 1904 checkThread(); 1905 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1906 } 1907 1908 /** 1909 * Inform WebView of the network state. This is used to set 1910 * the JavaScript property window.navigator.isOnline and 1911 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1912 * @param networkUp boolean indicating if network is available 1913 */ 1914 public void setNetworkAvailable(boolean networkUp) { 1915 checkThread(); 1916 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1917 networkUp ? 1 : 0, 0); 1918 } 1919 1920 /** 1921 * Inform WebView about the current network type. 1922 * {@hide} 1923 */ 1924 public void setNetworkType(String type, String subtype) { 1925 checkThread(); 1926 Map<String, String> map = new HashMap<String, String>(); 1927 map.put("type", type); 1928 map.put("subtype", subtype); 1929 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1930 } 1931 /** 1932 * Save the state of this WebView used in 1933 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1934 * method no longer stores the display data for this WebView. The previous 1935 * behavior could potentially leak files if {@link #restoreState} was never 1936 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1937 * and restoring the display data. 1938 * @param outState The Bundle to store the WebView state. 1939 * @return The same copy of the back/forward list used to save the state. If 1940 * saveState fails, the returned list will be null. 1941 * @see #savePicture 1942 * @see #restorePicture 1943 */ 1944 public WebBackForwardList saveState(Bundle outState) { 1945 checkThread(); 1946 if (outState == null) { 1947 return null; 1948 } 1949 // We grab a copy of the back/forward list because a client of WebView 1950 // may have invalidated the history list by calling clearHistory. 1951 WebBackForwardList list = copyBackForwardList(); 1952 final int currentIndex = list.getCurrentIndex(); 1953 final int size = list.getSize(); 1954 // We should fail saving the state if the list is empty or the index is 1955 // not in a valid range. 1956 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1957 return null; 1958 } 1959 outState.putInt("index", currentIndex); 1960 // FIXME: This should just be a byte[][] instead of ArrayList but 1961 // Parcel.java does not have the code to handle multi-dimensional 1962 // arrays. 1963 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1964 for (int i = 0; i < size; i++) { 1965 WebHistoryItem item = list.getItemAtIndex(i); 1966 if (null == item) { 1967 // FIXME: this shouldn't happen 1968 // need to determine how item got set to null 1969 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1970 return null; 1971 } 1972 byte[] data = item.getFlattenedData(); 1973 if (data == null) { 1974 // It would be very odd to not have any data for a given history 1975 // item. And we will fail to rebuild the history list without 1976 // flattened data. 1977 return null; 1978 } 1979 history.add(data); 1980 } 1981 outState.putSerializable("history", history); 1982 if (mCertificate != null) { 1983 outState.putBundle("certificate", 1984 SslCertificate.saveState(mCertificate)); 1985 } 1986 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1987 mZoomManager.saveZoomState(outState); 1988 return list; 1989 } 1990 1991 /** 1992 * Save the current display data to the Bundle given. Used in conjunction 1993 * with {@link #saveState}. 1994 * @param b A Bundle to store the display data. 1995 * @param dest The file to store the serialized picture data. Will be 1996 * overwritten with this WebView's picture data. 1997 * @return True if the picture was successfully saved. 1998 * @deprecated This method is now obsolete. 1999 */ 2000 @Deprecated 2001 public boolean savePicture(Bundle b, final File dest) { 2002 checkThread(); 2003 if (dest == null || b == null) { 2004 return false; 2005 } 2006 final Picture p = capturePicture(); 2007 // Use a temporary file while writing to ensure the destination file 2008 // contains valid data. 2009 final File temp = new File(dest.getPath() + ".writing"); 2010 new Thread(new Runnable() { 2011 @Override 2012 public void run() { 2013 FileOutputStream out = null; 2014 try { 2015 out = new FileOutputStream(temp); 2016 p.writeToStream(out); 2017 // Writing the picture succeeded, rename the temporary file 2018 // to the destination. 2019 temp.renameTo(dest); 2020 } catch (Exception e) { 2021 // too late to do anything about it. 2022 } finally { 2023 if (out != null) { 2024 try { 2025 out.close(); 2026 } catch (Exception e) { 2027 // Can't do anything about that 2028 } 2029 } 2030 temp.delete(); 2031 } 2032 } 2033 }).start(); 2034 // now update the bundle 2035 b.putInt("scrollX", mScrollX); 2036 b.putInt("scrollY", mScrollY); 2037 mZoomManager.saveZoomState(b); 2038 return true; 2039 } 2040 2041 private void restoreHistoryPictureFields(Picture p, Bundle b) { 2042 int sx = b.getInt("scrollX", 0); 2043 int sy = b.getInt("scrollY", 0); 2044 2045 mDrawHistory = true; 2046 mHistoryPicture = p; 2047 2048 mScrollX = sx; 2049 mScrollY = sy; 2050 mZoomManager.restoreZoomState(b); 2051 final float scale = mZoomManager.getScale(); 2052 mHistoryWidth = Math.round(p.getWidth() * scale); 2053 mHistoryHeight = Math.round(p.getHeight() * scale); 2054 2055 invalidate(); 2056 } 2057 2058 /** 2059 * Restore the display data that was save in {@link #savePicture}. Used in 2060 * conjunction with {@link #restoreState}. 2061 * 2062 * Note that this will not work if the WebView is hardware accelerated. 2063 * @param b A Bundle containing the saved display data. 2064 * @param src The file where the picture data was stored. 2065 * @return True if the picture was successfully restored. 2066 * @deprecated This method is now obsolete. 2067 */ 2068 @Deprecated 2069 public boolean restorePicture(Bundle b, File src) { 2070 checkThread(); 2071 if (src == null || b == null) { 2072 return false; 2073 } 2074 if (!src.exists()) { 2075 return false; 2076 } 2077 try { 2078 final FileInputStream in = new FileInputStream(src); 2079 final Bundle copy = new Bundle(b); 2080 new Thread(new Runnable() { 2081 @Override 2082 public void run() { 2083 try { 2084 final Picture p = Picture.createFromStream(in); 2085 if (p != null) { 2086 // Post a runnable on the main thread to update the 2087 // history picture fields. 2088 mPrivateHandler.post(new Runnable() { 2089 @Override 2090 public void run() { 2091 restoreHistoryPictureFields(p, copy); 2092 } 2093 }); 2094 } 2095 } finally { 2096 try { 2097 in.close(); 2098 } catch (Exception e) { 2099 // Nothing we can do now. 2100 } 2101 } 2102 } 2103 }).start(); 2104 } catch (FileNotFoundException e){ 2105 e.printStackTrace(); 2106 } 2107 return true; 2108 } 2109 2110 /** 2111 * Saves the view data to the output stream. The output is highly 2112 * version specific, and may not be able to be loaded by newer versions 2113 * of WebView. 2114 * @param stream The {@link OutputStream} to save to 2115 * @return True if saved successfully 2116 * @hide 2117 */ 2118 public boolean saveViewState(OutputStream stream) { 2119 try { 2120 return ViewStateSerializer.serializeViewState(stream, this); 2121 } catch (IOException e) { 2122 Log.w(LOGTAG, "Failed to saveViewState", e); 2123 } 2124 return false; 2125 } 2126 2127 /** 2128 * Loads the view data from the input stream. See 2129 * {@link #saveViewState(OutputStream)} for more information. 2130 * @param stream The {@link InputStream} to load from 2131 * @return True if loaded successfully 2132 * @hide 2133 */ 2134 public boolean loadViewState(InputStream stream) { 2135 try { 2136 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 2137 mBlockWebkitViewMessages = true; 2138 setNewPicture(mLoadedPicture, true); 2139 mLoadedPicture.mViewState = null; 2140 return true; 2141 } catch (IOException e) { 2142 Log.w(LOGTAG, "Failed to loadViewState", e); 2143 } 2144 return false; 2145 } 2146 2147 /** 2148 * Clears the view state set with {@link #loadViewState(InputStream)}. 2149 * This WebView will then switch to showing the content from webkit 2150 * @hide 2151 */ 2152 public void clearViewState() { 2153 mBlockWebkitViewMessages = false; 2154 mLoadedPicture = null; 2155 invalidate(); 2156 } 2157 2158 /** 2159 * Restore the state of this WebView from the given map used in 2160 * {@link android.app.Activity#onRestoreInstanceState}. This method should 2161 * be called to restore the state of the WebView before using the object. If 2162 * it is called after the WebView has had a chance to build state (load 2163 * pages, create a back/forward list, etc.) there may be undesirable 2164 * side-effects. Please note that this method no longer restores the 2165 * display data for this WebView. See {@link #savePicture} and {@link 2166 * #restorePicture} for saving and restoring the display data. 2167 * @param inState The incoming Bundle of state. 2168 * @return The restored back/forward list or null if restoreState failed. 2169 * @see #savePicture 2170 * @see #restorePicture 2171 */ 2172 public WebBackForwardList restoreState(Bundle inState) { 2173 checkThread(); 2174 WebBackForwardList returnList = null; 2175 if (inState == null) { 2176 return returnList; 2177 } 2178 if (inState.containsKey("index") && inState.containsKey("history")) { 2179 mCertificate = SslCertificate.restoreState( 2180 inState.getBundle("certificate")); 2181 2182 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 2183 final int index = inState.getInt("index"); 2184 // We can't use a clone of the list because we need to modify the 2185 // shared copy, so synchronize instead to prevent concurrent 2186 // modifications. 2187 synchronized (list) { 2188 final List<byte[]> history = 2189 (List<byte[]>) inState.getSerializable("history"); 2190 final int size = history.size(); 2191 // Check the index bounds so we don't crash in native code while 2192 // restoring the history index. 2193 if (index < 0 || index >= size) { 2194 return null; 2195 } 2196 for (int i = 0; i < size; i++) { 2197 byte[] data = history.remove(0); 2198 if (data == null) { 2199 // If we somehow have null data, we cannot reconstruct 2200 // the item and thus our history list cannot be rebuilt. 2201 return null; 2202 } 2203 WebHistoryItem item = new WebHistoryItem(data); 2204 list.addHistoryItem(item); 2205 } 2206 // Grab the most recent copy to return to the caller. 2207 returnList = copyBackForwardList(); 2208 // Update the copy to have the correct index. 2209 returnList.setCurrentIndex(index); 2210 } 2211 // Restore private browsing setting. 2212 if (inState.getBoolean("privateBrowsingEnabled")) { 2213 getSettings().setPrivateBrowsingEnabled(true); 2214 } 2215 mZoomManager.restoreZoomState(inState); 2216 // Remove all pending messages because we are restoring previous 2217 // state. 2218 mWebViewCore.removeMessages(); 2219 // Send a restore state message. 2220 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 2221 } 2222 return returnList; 2223 } 2224 2225 /** 2226 * Load the given URL with the specified additional HTTP headers. 2227 * @param url The URL of the resource to load. 2228 * @param additionalHttpHeaders The additional headers to be used in the 2229 * HTTP request for this URL, specified as a map from name to 2230 * value. Note that if this map contains any of the headers 2231 * that are set by default by the WebView, such as those 2232 * controlling caching, accept types or the User-Agent, their 2233 * values may be overriden by the WebView's defaults. 2234 */ 2235 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 2236 checkThread(); 2237 loadUrlImpl(url, additionalHttpHeaders); 2238 } 2239 2240 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 2241 switchOutDrawHistory(); 2242 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 2243 arg.mUrl = url; 2244 arg.mExtraHeaders = extraHeaders; 2245 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 2246 clearHelpers(); 2247 } 2248 2249 /** 2250 * Load the given URL. 2251 * @param url The URL of the resource to load. 2252 */ 2253 public void loadUrl(String url) { 2254 checkThread(); 2255 loadUrlImpl(url); 2256 } 2257 2258 private void loadUrlImpl(String url) { 2259 if (url == null) { 2260 return; 2261 } 2262 loadUrlImpl(url, null); 2263 } 2264 2265 /** 2266 * Load the url with postData using "POST" method into the WebView. If url 2267 * is not a network url, it will be loaded with {link 2268 * {@link #loadUrl(String)} instead. 2269 * 2270 * @param url The url of the resource to load. 2271 * @param postData The data will be passed to "POST" request. 2272 */ 2273 public void postUrl(String url, byte[] postData) { 2274 checkThread(); 2275 if (URLUtil.isNetworkUrl(url)) { 2276 switchOutDrawHistory(); 2277 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2278 arg.mUrl = url; 2279 arg.mPostData = postData; 2280 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2281 clearHelpers(); 2282 } else { 2283 loadUrlImpl(url); 2284 } 2285 } 2286 2287 /** 2288 * Load the given data into the WebView using a 'data' scheme URL. 2289 * <p> 2290 * Note that JavaScript's same origin policy means that script running in a 2291 * page loaded using this method will be unable to access content loaded 2292 * using any scheme other than 'data', including 'http(s)'. To avoid this 2293 * restriction, use {@link 2294 * #loadDataWithBaseURL(String,String,String,String,String) 2295 * loadDataWithBaseURL()} with an appropriate base URL. 2296 * <p> 2297 * If the value of the encoding parameter is 'base64', then the data must 2298 * be encoded as base64. Otherwise, the data must use ASCII encoding for 2299 * octets inside the range of safe URL characters and use the standard %xx 2300 * hex encoding of URLs for octets outside that range. For example, 2301 * '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively. 2302 * <p> 2303 * The 'data' scheme URL formed by this method uses the default US-ASCII 2304 * charset. If you need need to set a different charset, you should form a 2305 * 'data' scheme URL which explicitly specifies a charset parameter in the 2306 * mediatype portion of the URL and call {@link #loadUrl(String)} instead. 2307 * Note that the charset obtained from the mediatype portion of a data URL 2308 * always overrides that specified in the HTML or XML document itself. 2309 * @param data A String of data in the given encoding. 2310 * @param mimeType The MIME type of the data, e.g. 'text/html'. 2311 * @param encoding The encoding of the data. 2312 */ 2313 public void loadData(String data, String mimeType, String encoding) { 2314 checkThread(); 2315 loadDataImpl(data, mimeType, encoding); 2316 } 2317 2318 private void loadDataImpl(String data, String mimeType, String encoding) { 2319 StringBuilder dataUrl = new StringBuilder("data:"); 2320 dataUrl.append(mimeType); 2321 if ("base64".equals(encoding)) { 2322 dataUrl.append(";base64"); 2323 } 2324 dataUrl.append(","); 2325 dataUrl.append(data); 2326 loadUrlImpl(dataUrl.toString()); 2327 } 2328 2329 /** 2330 * Load the given data into the WebView, using baseUrl as the base URL for 2331 * the content. The base URL is used both to resolve relative URLs and when 2332 * applying JavaScript's same origin policy. The historyUrl is used for the 2333 * history entry. 2334 * <p> 2335 * Note that content specified in this way can access local device files 2336 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2337 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2338 * <p> 2339 * If the base URL uses the data scheme, this method is equivalent to 2340 * calling {@link #loadData(String,String,String) loadData()} and the 2341 * historyUrl is ignored. 2342 * @param baseUrl URL to use as the page's base URL. If null defaults to 2343 * 'about:blank' 2344 * @param data A String of data in the given encoding. 2345 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2346 * defaults to 'text/html'. 2347 * @param encoding The encoding of the data. 2348 * @param historyUrl URL to use as the history entry, if null defaults to 2349 * 'about:blank'. 2350 */ 2351 public void loadDataWithBaseURL(String baseUrl, String data, 2352 String mimeType, String encoding, String historyUrl) { 2353 checkThread(); 2354 2355 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2356 loadDataImpl(data, mimeType, encoding); 2357 return; 2358 } 2359 switchOutDrawHistory(); 2360 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2361 arg.mBaseUrl = baseUrl; 2362 arg.mData = data; 2363 arg.mMimeType = mimeType; 2364 arg.mEncoding = encoding; 2365 arg.mHistoryUrl = historyUrl; 2366 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2367 clearHelpers(); 2368 } 2369 2370 /** 2371 * Saves the current view as a web archive. 2372 * 2373 * @param filename The filename where the archive should be placed. 2374 */ 2375 public void saveWebArchive(String filename) { 2376 checkThread(); 2377 saveWebArchiveImpl(filename, false, null); 2378 } 2379 2380 /* package */ static class SaveWebArchiveMessage { 2381 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2382 mBasename = basename; 2383 mAutoname = autoname; 2384 mCallback = callback; 2385 } 2386 2387 /* package */ final String mBasename; 2388 /* package */ final boolean mAutoname; 2389 /* package */ final ValueCallback<String> mCallback; 2390 /* package */ String mResultFile; 2391 } 2392 2393 /** 2394 * Saves the current view as a web archive. 2395 * 2396 * @param basename The filename where the archive should be placed. 2397 * @param autoname If false, takes basename to be a file. If true, basename 2398 * is assumed to be a directory in which a filename will be 2399 * chosen according to the url of the current page. 2400 * @param callback Called after the web archive has been saved. The 2401 * parameter for onReceiveValue will either be the filename 2402 * under which the file was saved, or null if saving the 2403 * file failed. 2404 */ 2405 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2406 checkThread(); 2407 saveWebArchiveImpl(basename, autoname, callback); 2408 } 2409 2410 private void saveWebArchiveImpl(String basename, boolean autoname, 2411 ValueCallback<String> callback) { 2412 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2413 new SaveWebArchiveMessage(basename, autoname, callback)); 2414 } 2415 2416 /** 2417 * Stop the current load. 2418 */ 2419 public void stopLoading() { 2420 checkThread(); 2421 // TODO: should we clear all the messages in the queue before sending 2422 // STOP_LOADING? 2423 switchOutDrawHistory(); 2424 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2425 } 2426 2427 /** 2428 * Reload the current url. 2429 */ 2430 public void reload() { 2431 checkThread(); 2432 clearHelpers(); 2433 switchOutDrawHistory(); 2434 mWebViewCore.sendMessage(EventHub.RELOAD); 2435 } 2436 2437 /** 2438 * Return true if this WebView has a back history item. 2439 * @return True iff this WebView has a back history item. 2440 */ 2441 public boolean canGoBack() { 2442 checkThread(); 2443 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2444 synchronized (l) { 2445 if (l.getClearPending()) { 2446 return false; 2447 } else { 2448 return l.getCurrentIndex() > 0; 2449 } 2450 } 2451 } 2452 2453 /** 2454 * Go back in the history of this WebView. 2455 */ 2456 public void goBack() { 2457 checkThread(); 2458 goBackOrForwardImpl(-1); 2459 } 2460 2461 /** 2462 * Return true if this WebView has a forward history item. 2463 * @return True iff this Webview has a forward history item. 2464 */ 2465 public boolean canGoForward() { 2466 checkThread(); 2467 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2468 synchronized (l) { 2469 if (l.getClearPending()) { 2470 return false; 2471 } else { 2472 return l.getCurrentIndex() < l.getSize() - 1; 2473 } 2474 } 2475 } 2476 2477 /** 2478 * Go forward in the history of this WebView. 2479 */ 2480 public void goForward() { 2481 checkThread(); 2482 goBackOrForwardImpl(1); 2483 } 2484 2485 /** 2486 * Return true if the page can go back or forward the given 2487 * number of steps. 2488 * @param steps The negative or positive number of steps to move the 2489 * history. 2490 */ 2491 public boolean canGoBackOrForward(int steps) { 2492 checkThread(); 2493 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2494 synchronized (l) { 2495 if (l.getClearPending()) { 2496 return false; 2497 } else { 2498 int newIndex = l.getCurrentIndex() + steps; 2499 return newIndex >= 0 && newIndex < l.getSize(); 2500 } 2501 } 2502 } 2503 2504 /** 2505 * Go to the history item that is the number of steps away from 2506 * the current item. Steps is negative if backward and positive 2507 * if forward. 2508 * @param steps The number of steps to take back or forward in the back 2509 * forward list. 2510 */ 2511 public void goBackOrForward(int steps) { 2512 checkThread(); 2513 goBackOrForwardImpl(steps); 2514 } 2515 2516 private void goBackOrForwardImpl(int steps) { 2517 goBackOrForward(steps, false); 2518 } 2519 2520 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2521 if (steps != 0) { 2522 clearHelpers(); 2523 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2524 ignoreSnapshot ? 1 : 0); 2525 } 2526 } 2527 2528 /** 2529 * Returns true if private browsing is enabled in this WebView. 2530 */ 2531 public boolean isPrivateBrowsingEnabled() { 2532 checkThread(); 2533 return getSettings().isPrivateBrowsingEnabled(); 2534 } 2535 2536 private void startPrivateBrowsing() { 2537 getSettings().setPrivateBrowsingEnabled(true); 2538 } 2539 2540 private boolean extendScroll(int y) { 2541 int finalY = mScroller.getFinalY(); 2542 int newY = pinLocY(finalY + y); 2543 if (newY == finalY) return false; 2544 mScroller.setFinalY(newY); 2545 mScroller.extendDuration(computeDuration(0, y)); 2546 return true; 2547 } 2548 2549 /** 2550 * Scroll the contents of the view up by half the view size 2551 * @param top true to jump to the top of the page 2552 * @return true if the page was scrolled 2553 */ 2554 public boolean pageUp(boolean top) { 2555 checkThread(); 2556 if (mNativeClass == 0) { 2557 return false; 2558 } 2559 nativeClearCursor(); // start next trackball movement from page edge 2560 if (top) { 2561 // go to the top of the document 2562 return pinScrollTo(mScrollX, 0, true, 0); 2563 } 2564 // Page up 2565 int h = getHeight(); 2566 int y; 2567 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2568 y = -h + PAGE_SCROLL_OVERLAP; 2569 } else { 2570 y = -h / 2; 2571 } 2572 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2573 : extendScroll(y); 2574 } 2575 2576 /** 2577 * Scroll the contents of the view down by half the page size 2578 * @param bottom true to jump to bottom of page 2579 * @return true if the page was scrolled 2580 */ 2581 public boolean pageDown(boolean bottom) { 2582 checkThread(); 2583 if (mNativeClass == 0) { 2584 return false; 2585 } 2586 nativeClearCursor(); // start next trackball movement from page edge 2587 if (bottom) { 2588 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2589 } 2590 // Page down. 2591 int h = getHeight(); 2592 int y; 2593 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2594 y = h - PAGE_SCROLL_OVERLAP; 2595 } else { 2596 y = h / 2; 2597 } 2598 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2599 : extendScroll(y); 2600 } 2601 2602 /** 2603 * Clear the view so that onDraw() will draw nothing but white background, 2604 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2605 */ 2606 public void clearView() { 2607 checkThread(); 2608 mContentWidth = 0; 2609 mContentHeight = 0; 2610 setBaseLayer(0, null, false, false, false); 2611 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2612 } 2613 2614 /** 2615 * Return a new picture that captures the current display of the webview. 2616 * This is a copy of the display, and will be unaffected if the webview 2617 * later loads a different URL. 2618 * 2619 * @return a picture containing the current contents of the view. Note this 2620 * picture is of the entire document, and is not restricted to the 2621 * bounds of the view. 2622 */ 2623 public Picture capturePicture() { 2624 checkThread(); 2625 if (mNativeClass == 0) return null; 2626 Picture result = new Picture(); 2627 nativeCopyBaseContentToPicture(result); 2628 return result; 2629 } 2630 2631 /** 2632 * Return true if the browser is displaying a TextView for text input. 2633 */ 2634 private boolean inEditingMode() { 2635 return mWebTextView != null && mWebTextView.getParent() != null; 2636 } 2637 2638 /** 2639 * Remove the WebTextView. 2640 */ 2641 private void clearTextEntry() { 2642 if (inEditingMode()) { 2643 mWebTextView.remove(); 2644 } else { 2645 // The keyboard may be open with the WebView as the served view 2646 hideSoftKeyboard(); 2647 } 2648 } 2649 2650 /** 2651 * Return the current scale of the WebView 2652 * @return The current scale. 2653 */ 2654 public float getScale() { 2655 checkThread(); 2656 return mZoomManager.getScale(); 2657 } 2658 2659 // Called by JNI. Returns the scale to apply to the text selection handles 2660 /* package */ float getTextHandleScale() { 2661 float density = mContext.getResources().getDisplayMetrics().density; 2662 return density / getScale(); 2663 } 2664 2665 /** 2666 * Compute the reading level scale of the WebView 2667 * @param scale The current scale. 2668 * @return The reading level scale. 2669 */ 2670 /*package*/ float computeReadingLevelScale(float scale) { 2671 return mZoomManager.computeReadingLevelScale(scale); 2672 } 2673 2674 /** 2675 * Set the initial scale for the WebView. 0 means default. If 2676 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2677 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2678 * WebView starts with this value as initial scale. 2679 * Please note that unlike the scale properties in the viewport meta tag, 2680 * this method doesn't take the screen density into account. 2681 * 2682 * @param scaleInPercent The initial scale in percent. 2683 */ 2684 public void setInitialScale(int scaleInPercent) { 2685 checkThread(); 2686 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2687 } 2688 2689 /** 2690 * Invoke the graphical zoom picker widget for this WebView. This will 2691 * result in the zoom widget appearing on the screen to control the zoom 2692 * level of this WebView. 2693 */ 2694 public void invokeZoomPicker() { 2695 checkThread(); 2696 if (!getSettings().supportZoom()) { 2697 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2698 return; 2699 } 2700 clearHelpers(); 2701 mZoomManager.invokeZoomPicker(); 2702 } 2703 2704 /** 2705 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2706 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2707 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2708 * anchor does not have a url or if it is a JavaScript url, the type will 2709 * be UNKNOWN_TYPE and the url has to be retrieved through 2710 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2711 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2712 * the "extra" field. A type of 2713 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2714 * a child node. If a phone number is found, the HitTestResult type is set 2715 * to PHONE_TYPE and the phone number is set in the "extra" field of 2716 * HitTestResult. If a map address is found, the HitTestResult type is set 2717 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2718 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2719 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2720 * HitTestResult type is set to UNKNOWN_TYPE. 2721 */ 2722 public HitTestResult getHitTestResult() { 2723 checkThread(); 2724 return hitTestResult(mInitialHitTestResult); 2725 } 2726 2727 private HitTestResult hitTestResult(HitTestResult fallback) { 2728 if (mNativeClass == 0 || sDisableNavcache) { 2729 return fallback; 2730 } 2731 2732 HitTestResult result = new HitTestResult(); 2733 if (nativeHasCursorNode()) { 2734 if (nativeCursorIsTextInput()) { 2735 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2736 } else { 2737 String text = nativeCursorText(); 2738 if (text != null) { 2739 if (text.startsWith(SCHEME_TEL)) { 2740 result.setType(HitTestResult.PHONE_TYPE); 2741 result.setExtra(URLDecoder.decode(text 2742 .substring(SCHEME_TEL.length()))); 2743 } else if (text.startsWith(SCHEME_MAILTO)) { 2744 result.setType(HitTestResult.EMAIL_TYPE); 2745 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2746 } else if (text.startsWith(SCHEME_GEO)) { 2747 result.setType(HitTestResult.GEO_TYPE); 2748 result.setExtra(URLDecoder.decode(text 2749 .substring(SCHEME_GEO.length()))); 2750 } else if (nativeCursorIsAnchor()) { 2751 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2752 result.setExtra(text); 2753 } 2754 } 2755 } 2756 } else if (fallback != null) { 2757 /* If webkit causes a rebuild while the long press is in progress, 2758 * the cursor node may be reset, even if it is still around. This 2759 * uses the cursor node saved when the touch began. Since the 2760 * nativeImageURI below only changes the result if it is successful, 2761 * this uses the data beneath the touch if available or the original 2762 * tap data otherwise. 2763 */ 2764 Log.v(LOGTAG, "hitTestResult use fallback"); 2765 result = fallback; 2766 } 2767 int type = result.getType(); 2768 if (type == HitTestResult.UNKNOWN_TYPE 2769 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2770 // Now check to see if it is an image. 2771 int contentX = viewToContentX(mLastTouchX + mScrollX); 2772 int contentY = viewToContentY(mLastTouchY + mScrollY); 2773 String text = nativeImageURI(contentX, contentY); 2774 if (text != null) { 2775 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2776 HitTestResult.IMAGE_TYPE : 2777 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2778 result.setExtra(text); 2779 } 2780 } 2781 return result; 2782 } 2783 2784 // Called by JNI when the DOM has changed the focus. Clear the focus so 2785 // that new keys will go to the newly focused field 2786 private void domChangedFocus() { 2787 if (inEditingMode()) { 2788 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2789 } 2790 } 2791 /** 2792 * Request the anchor or image element URL at the last tapped point. 2793 * If hrefMsg is null, this method returns immediately and does not 2794 * dispatch hrefMsg to its target. If the tapped point hits an image, 2795 * an anchor, or an image in an anchor, the message associates 2796 * strings in named keys in its data. The value paired with the key 2797 * may be an empty string. 2798 * 2799 * @param hrefMsg This message will be dispatched with the result of the 2800 * request. The message data contains three keys: 2801 * - "url" returns the anchor's href attribute. 2802 * - "title" returns the anchor's text. 2803 * - "src" returns the image's src attribute. 2804 */ 2805 public void requestFocusNodeHref(Message hrefMsg) { 2806 checkThread(); 2807 if (hrefMsg == null) { 2808 return; 2809 } 2810 int contentX = viewToContentX(mLastTouchX + mScrollX); 2811 int contentY = viewToContentY(mLastTouchY + mScrollY); 2812 if (mFocusedNode != null && mFocusedNode.mHitTestX == contentX 2813 && mFocusedNode.mHitTestY == contentY) { 2814 hrefMsg.getData().putString(FocusNodeHref.URL, mFocusedNode.mLinkUrl); 2815 hrefMsg.getData().putString(FocusNodeHref.TITLE, mFocusedNode.mAnchorText); 2816 hrefMsg.getData().putString(FocusNodeHref.SRC, mFocusedNode.mImageUrl); 2817 hrefMsg.sendToTarget(); 2818 return; 2819 } 2820 if (nativeHasCursorNode()) { 2821 Rect cursorBounds = nativeGetCursorRingBounds(); 2822 if (!cursorBounds.contains(contentX, contentY)) { 2823 int slop = viewToContentDimension(mNavSlop); 2824 cursorBounds.inset(-slop, -slop); 2825 if (cursorBounds.contains(contentX, contentY)) { 2826 contentX = cursorBounds.centerX(); 2827 contentY = cursorBounds.centerY(); 2828 } 2829 } 2830 } 2831 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2832 contentX, contentY, hrefMsg); 2833 } 2834 2835 /** 2836 * Request the url of the image last touched by the user. msg will be sent 2837 * to its target with a String representing the url as its object. 2838 * 2839 * @param msg This message will be dispatched with the result of the request 2840 * as the data member with "url" as key. The result can be null. 2841 */ 2842 public void requestImageRef(Message msg) { 2843 checkThread(); 2844 if (0 == mNativeClass) return; // client isn't initialized 2845 int contentX = viewToContentX(mLastTouchX + mScrollX); 2846 int contentY = viewToContentY(mLastTouchY + mScrollY); 2847 String ref = nativeImageURI(contentX, contentY); 2848 Bundle data = msg.getData(); 2849 data.putString("url", ref); 2850 msg.setData(data); 2851 msg.sendToTarget(); 2852 } 2853 2854 static int pinLoc(int x, int viewMax, int docMax) { 2855// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2856 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2857 // pin the short document to the top/left of the screen 2858 x = 0; 2859// Log.d(LOGTAG, "--- center " + x); 2860 } else if (x < 0) { 2861 x = 0; 2862// Log.d(LOGTAG, "--- zero"); 2863 } else if (x + viewMax > docMax) { 2864 x = docMax - viewMax; 2865// Log.d(LOGTAG, "--- pin " + x); 2866 } 2867 return x; 2868 } 2869 2870 // Expects x in view coordinates 2871 int pinLocX(int x) { 2872 if (mInOverScrollMode) return x; 2873 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2874 } 2875 2876 // Expects y in view coordinates 2877 int pinLocY(int y) { 2878 if (mInOverScrollMode) return y; 2879 return pinLoc(y, getViewHeightWithTitle(), 2880 computeRealVerticalScrollRange() + getTitleHeight()); 2881 } 2882 2883 /** 2884 * A title bar which is embedded in this WebView, and scrolls along with it 2885 * vertically, but not horizontally. 2886 */ 2887 private View mTitleBar; 2888 2889 /** 2890 * the title bar rendering gravity 2891 */ 2892 private int mTitleGravity; 2893 2894 /** 2895 * Add or remove a title bar to be embedded into the WebView, and scroll 2896 * along with it vertically, while remaining in view horizontally. Pass 2897 * null to remove the title bar from the WebView, and return to drawing 2898 * the WebView normally without translating to account for the title bar. 2899 * @hide 2900 */ 2901 public void setEmbeddedTitleBar(View v) { 2902 if (mTitleBar == v) return; 2903 if (mTitleBar != null) { 2904 removeView(mTitleBar); 2905 } 2906 if (null != v) { 2907 addView(v, new AbsoluteLayout.LayoutParams( 2908 ViewGroup.LayoutParams.MATCH_PARENT, 2909 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2910 } 2911 mTitleBar = v; 2912 } 2913 2914 /** 2915 * Set where to render the embedded title bar 2916 * NO_GRAVITY at the top of the page 2917 * TOP at the top of the screen 2918 * @hide 2919 */ 2920 public void setTitleBarGravity(int gravity) { 2921 mTitleGravity = gravity; 2922 // force refresh 2923 invalidate(); 2924 } 2925 2926 /** 2927 * Given a distance in view space, convert it to content space. Note: this 2928 * does not reflect translation, just scaling, so this should not be called 2929 * with coordinates, but should be called for dimensions like width or 2930 * height. 2931 */ 2932 private int viewToContentDimension(int d) { 2933 return Math.round(d * mZoomManager.getInvScale()); 2934 } 2935 2936 /** 2937 * Given an x coordinate in view space, convert it to content space. Also 2938 * may be used for absolute heights (such as for the WebTextView's 2939 * textSize, which is unaffected by the height of the title bar). 2940 */ 2941 /*package*/ int viewToContentX(int x) { 2942 return viewToContentDimension(x); 2943 } 2944 2945 /** 2946 * Given a y coordinate in view space, convert it to content space. 2947 * Takes into account the height of the title bar if there is one 2948 * embedded into the WebView. 2949 */ 2950 /*package*/ int viewToContentY(int y) { 2951 return viewToContentDimension(y - getTitleHeight()); 2952 } 2953 2954 /** 2955 * Given a x coordinate in view space, convert it to content space. 2956 * Returns the result as a float. 2957 */ 2958 private float viewToContentXf(int x) { 2959 return x * mZoomManager.getInvScale(); 2960 } 2961 2962 /** 2963 * Given a y coordinate in view space, convert it to content space. 2964 * Takes into account the height of the title bar if there is one 2965 * embedded into the WebView. Returns the result as a float. 2966 */ 2967 private float viewToContentYf(int y) { 2968 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2969 } 2970 2971 /** 2972 * Given a distance in content space, convert it to view space. Note: this 2973 * does not reflect translation, just scaling, so this should not be called 2974 * with coordinates, but should be called for dimensions like width or 2975 * height. 2976 */ 2977 /*package*/ int contentToViewDimension(int d) { 2978 return Math.round(d * mZoomManager.getScale()); 2979 } 2980 2981 /** 2982 * Given an x coordinate in content space, convert it to view 2983 * space. 2984 */ 2985 /*package*/ int contentToViewX(int x) { 2986 return contentToViewDimension(x); 2987 } 2988 2989 /** 2990 * Given a y coordinate in content space, convert it to view 2991 * space. Takes into account the height of the title bar. 2992 */ 2993 /*package*/ int contentToViewY(int y) { 2994 return contentToViewDimension(y) + getTitleHeight(); 2995 } 2996 2997 private Rect contentToViewRect(Rect x) { 2998 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2999 contentToViewX(x.right), contentToViewY(x.bottom)); 3000 } 3001 3002 /* To invalidate a rectangle in content coordinates, we need to transform 3003 the rect into view coordinates, so we can then call invalidate(...). 3004 3005 Normally, we would just call contentToView[XY](...), which eventually 3006 calls Math.round(coordinate * mActualScale). However, for invalidates, 3007 we need to account for the slop that occurs with antialiasing. To 3008 address that, we are a little more liberal in the size of the rect that 3009 we invalidate. 3010 3011 This liberal calculation calls floor() for the top/left, and ceil() for 3012 the bottom/right coordinates. This catches the possible extra pixels of 3013 antialiasing that we might have missed with just round(). 3014 */ 3015 3016 // Called by JNI to invalidate the View, given rectangle coordinates in 3017 // content space 3018 private void viewInvalidate(int l, int t, int r, int b) { 3019 final float scale = mZoomManager.getScale(); 3020 final int dy = getTitleHeight(); 3021 invalidate((int)Math.floor(l * scale), 3022 (int)Math.floor(t * scale) + dy, 3023 (int)Math.ceil(r * scale), 3024 (int)Math.ceil(b * scale) + dy); 3025 } 3026 3027 // Called by JNI to invalidate the View after a delay, given rectangle 3028 // coordinates in content space 3029 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 3030 final float scale = mZoomManager.getScale(); 3031 final int dy = getTitleHeight(); 3032 postInvalidateDelayed(delay, 3033 (int)Math.floor(l * scale), 3034 (int)Math.floor(t * scale) + dy, 3035 (int)Math.ceil(r * scale), 3036 (int)Math.ceil(b * scale) + dy); 3037 } 3038 3039 private void invalidateContentRect(Rect r) { 3040 viewInvalidate(r.left, r.top, r.right, r.bottom); 3041 } 3042 3043 // stop the scroll animation, and don't let a subsequent fling add 3044 // to the existing velocity 3045 private void abortAnimation() { 3046 mScroller.abortAnimation(); 3047 mLastVelocity = 0; 3048 } 3049 3050 /* call from webcoreview.draw(), so we're still executing in the UI thread 3051 */ 3052 private void recordNewContentSize(int w, int h, boolean updateLayout) { 3053 3054 // premature data from webkit, ignore 3055 if ((w | h) == 0) { 3056 return; 3057 } 3058 3059 // don't abort a scroll animation if we didn't change anything 3060 if (mContentWidth != w || mContentHeight != h) { 3061 // record new dimensions 3062 mContentWidth = w; 3063 mContentHeight = h; 3064 // If history Picture is drawn, don't update scroll. They will be 3065 // updated when we get out of that mode. 3066 if (!mDrawHistory) { 3067 // repin our scroll, taking into account the new content size 3068 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 3069 if (!mScroller.isFinished()) { 3070 // We are in the middle of a scroll. Repin the final scroll 3071 // position. 3072 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 3073 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 3074 } 3075 } 3076 } 3077 contentSizeChanged(updateLayout); 3078 } 3079 3080 // Used to avoid sending many visible rect messages. 3081 private Rect mLastVisibleRectSent = new Rect(); 3082 private Rect mLastGlobalRect = new Rect(); 3083 private Rect mVisibleRect = new Rect(); 3084 private Rect mGlobalVisibleRect = new Rect(); 3085 private Point mScrollOffset = new Point(); 3086 3087 Rect sendOurVisibleRect() { 3088 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 3089 calcOurContentVisibleRect(mVisibleRect); 3090 // Rect.equals() checks for null input. 3091 if (!mVisibleRect.equals(mLastVisibleRectSent)) { 3092 if (!mBlockWebkitViewMessages) { 3093 mScrollOffset.set(mVisibleRect.left, mVisibleRect.top); 3094 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 3095 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 3096 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, mScrollOffset); 3097 } 3098 mLastVisibleRectSent.set(mVisibleRect); 3099 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3100 } 3101 if (getGlobalVisibleRect(mGlobalVisibleRect) 3102 && !mGlobalVisibleRect.equals(mLastGlobalRect)) { 3103 if (DebugFlags.WEB_VIEW) { 3104 Log.v(LOGTAG, "sendOurVisibleRect=(" + mGlobalVisibleRect.left + "," 3105 + mGlobalVisibleRect.top + ",r=" + mGlobalVisibleRect.right + ",b=" 3106 + mGlobalVisibleRect.bottom); 3107 } 3108 // TODO: the global offset is only used by windowRect() 3109 // in ChromeClientAndroid ; other clients such as touch 3110 // and mouse events could return view + screen relative points. 3111 if (!mBlockWebkitViewMessages) { 3112 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, mGlobalVisibleRect); 3113 } 3114 mLastGlobalRect.set(mGlobalVisibleRect); 3115 } 3116 return mVisibleRect; 3117 } 3118 3119 private Point mGlobalVisibleOffset = new Point(); 3120 // Sets r to be the visible rectangle of our webview in view coordinates 3121 private void calcOurVisibleRect(Rect r) { 3122 getGlobalVisibleRect(r, mGlobalVisibleOffset); 3123 r.offset(-mGlobalVisibleOffset.x, -mGlobalVisibleOffset.y); 3124 } 3125 3126 // Sets r to be our visible rectangle in content coordinates 3127 private void calcOurContentVisibleRect(Rect r) { 3128 calcOurVisibleRect(r); 3129 r.left = viewToContentX(r.left); 3130 // viewToContentY will remove the total height of the title bar. Add 3131 // the visible height back in to account for the fact that if the title 3132 // bar is partially visible, the part of the visible rect which is 3133 // displaying our content is displaced by that amount. 3134 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 3135 r.right = viewToContentX(r.right); 3136 r.bottom = viewToContentY(r.bottom); 3137 } 3138 3139 private Rect mContentVisibleRect = new Rect(); 3140 // Sets r to be our visible rectangle in content coordinates. We use this 3141 // method on the native side to compute the position of the fixed layers. 3142 // Uses floating coordinates (necessary to correctly place elements when 3143 // the scale factor is not 1) 3144 private void calcOurContentVisibleRectF(RectF r) { 3145 calcOurVisibleRect(mContentVisibleRect); 3146 r.left = viewToContentXf(mContentVisibleRect.left); 3147 // viewToContentY will remove the total height of the title bar. Add 3148 // the visible height back in to account for the fact that if the title 3149 // bar is partially visible, the part of the visible rect which is 3150 // displaying our content is displaced by that amount. 3151 r.top = viewToContentYf(mContentVisibleRect.top + getVisibleTitleHeightImpl()); 3152 r.right = viewToContentXf(mContentVisibleRect.right); 3153 r.bottom = viewToContentYf(mContentVisibleRect.bottom); 3154 } 3155 3156 static class ViewSizeData { 3157 int mWidth; 3158 int mHeight; 3159 float mHeightWidthRatio; 3160 int mActualViewHeight; 3161 int mTextWrapWidth; 3162 int mAnchorX; 3163 int mAnchorY; 3164 float mScale; 3165 boolean mIgnoreHeight; 3166 } 3167 3168 /** 3169 * Compute unzoomed width and height, and if they differ from the last 3170 * values we sent, send them to webkit (to be used as new viewport) 3171 * 3172 * @param force ensures that the message is sent to webkit even if the width 3173 * or height has not changed since the last message 3174 * 3175 * @return true if new values were sent 3176 */ 3177 boolean sendViewSizeZoom(boolean force) { 3178 if (mBlockWebkitViewMessages) return false; 3179 if (mZoomManager.isPreventingWebkitUpdates()) return false; 3180 3181 int viewWidth = getViewWidth(); 3182 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 3183 // This height could be fixed and be different from actual visible height. 3184 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 3185 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 3186 // Make the ratio more accurate than (newHeight / newWidth), since the 3187 // latter both are calculated and rounded. 3188 float heightWidthRatio = (float) viewHeight / viewWidth; 3189 /* 3190 * Because the native side may have already done a layout before the 3191 * View system was able to measure us, we have to send a height of 0 to 3192 * remove excess whitespace when we grow our width. This will trigger a 3193 * layout and a change in content size. This content size change will 3194 * mean that contentSizeChanged will either call this method directly or 3195 * indirectly from onSizeChanged. 3196 */ 3197 if (newWidth > mLastWidthSent && mWrapContent) { 3198 newHeight = 0; 3199 heightWidthRatio = 0; 3200 } 3201 // Actual visible content height. 3202 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 3203 // Avoid sending another message if the dimensions have not changed. 3204 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 3205 actualViewHeight != mLastActualHeightSent) { 3206 ViewSizeData data = new ViewSizeData(); 3207 data.mWidth = newWidth; 3208 data.mHeight = newHeight; 3209 data.mHeightWidthRatio = heightWidthRatio; 3210 data.mActualViewHeight = actualViewHeight; 3211 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 3212 data.mScale = mZoomManager.getScale(); 3213 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 3214 && !mHeightCanMeasure; 3215 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 3216 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 3217 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 3218 mLastWidthSent = newWidth; 3219 mLastHeightSent = newHeight; 3220 mLastActualHeightSent = actualViewHeight; 3221 mZoomManager.clearDocumentAnchor(); 3222 return true; 3223 } 3224 return false; 3225 } 3226 3227 /** 3228 * Update the double-tap zoom. 3229 */ 3230 /* package */ void updateDoubleTapZoom(int doubleTapZoom) { 3231 mZoomManager.updateDoubleTapZoom(doubleTapZoom); 3232 } 3233 3234 private int computeRealHorizontalScrollRange() { 3235 if (mDrawHistory) { 3236 return mHistoryWidth; 3237 } else { 3238 // to avoid rounding error caused unnecessary scrollbar, use floor 3239 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 3240 } 3241 } 3242 3243 @Override 3244 protected int computeHorizontalScrollRange() { 3245 int range = computeRealHorizontalScrollRange(); 3246 3247 // Adjust reported range if overscrolled to compress the scroll bars 3248 final int scrollX = mScrollX; 3249 final int overscrollRight = computeMaxScrollX(); 3250 if (scrollX < 0) { 3251 range -= scrollX; 3252 } else if (scrollX > overscrollRight) { 3253 range += scrollX - overscrollRight; 3254 } 3255 3256 return range; 3257 } 3258 3259 @Override 3260 protected int computeHorizontalScrollOffset() { 3261 return Math.max(mScrollX, 0); 3262 } 3263 3264 private int computeRealVerticalScrollRange() { 3265 if (mDrawHistory) { 3266 return mHistoryHeight; 3267 } else { 3268 // to avoid rounding error caused unnecessary scrollbar, use floor 3269 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 3270 } 3271 } 3272 3273 @Override 3274 protected int computeVerticalScrollRange() { 3275 int range = computeRealVerticalScrollRange(); 3276 3277 // Adjust reported range if overscrolled to compress the scroll bars 3278 final int scrollY = mScrollY; 3279 final int overscrollBottom = computeMaxScrollY(); 3280 if (scrollY < 0) { 3281 range -= scrollY; 3282 } else if (scrollY > overscrollBottom) { 3283 range += scrollY - overscrollBottom; 3284 } 3285 3286 return range; 3287 } 3288 3289 @Override 3290 protected int computeVerticalScrollOffset() { 3291 return Math.max(mScrollY - getTitleHeight(), 0); 3292 } 3293 3294 @Override 3295 protected int computeVerticalScrollExtent() { 3296 return getViewHeight(); 3297 } 3298 3299 /** @hide */ 3300 @Override 3301 protected void onDrawVerticalScrollBar(Canvas canvas, 3302 Drawable scrollBar, 3303 int l, int t, int r, int b) { 3304 if (mScrollY < 0) { 3305 t -= mScrollY; 3306 } 3307 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3308 scrollBar.draw(canvas); 3309 } 3310 3311 @Override 3312 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3313 boolean clampedY) { 3314 // Special-case layer scrolling so that we do not trigger normal scroll 3315 // updating. 3316 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3317 scrollLayerTo(scrollX, scrollY); 3318 return; 3319 } 3320 mInOverScrollMode = false; 3321 int maxX = computeMaxScrollX(); 3322 int maxY = computeMaxScrollY(); 3323 if (maxX == 0) { 3324 // do not over scroll x if the page just fits the screen 3325 scrollX = pinLocX(scrollX); 3326 } else if (scrollX < 0 || scrollX > maxX) { 3327 mInOverScrollMode = true; 3328 } 3329 if (scrollY < 0 || scrollY > maxY) { 3330 mInOverScrollMode = true; 3331 } 3332 3333 int oldX = mScrollX; 3334 int oldY = mScrollY; 3335 3336 super.scrollTo(scrollX, scrollY); 3337 3338 if (mOverScrollGlow != null) { 3339 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 3340 } 3341 } 3342 3343 /** 3344 * Get the url for the current page. This is not always the same as the url 3345 * passed to WebViewClient.onPageStarted because although the load for 3346 * that url has begun, the current page may not have changed. 3347 * @return The url for the current page. 3348 */ 3349 public String getUrl() { 3350 checkThread(); 3351 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3352 return h != null ? h.getUrl() : null; 3353 } 3354 3355 /** 3356 * Get the original url for the current page. This is not always the same 3357 * as the url passed to WebViewClient.onPageStarted because although the 3358 * load for that url has begun, the current page may not have changed. 3359 * Also, there may have been redirects resulting in a different url to that 3360 * originally requested. 3361 * @return The url that was originally requested for the current page. 3362 */ 3363 public String getOriginalUrl() { 3364 checkThread(); 3365 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3366 return h != null ? h.getOriginalUrl() : null; 3367 } 3368 3369 /** 3370 * Get the title for the current page. This is the title of the current page 3371 * until WebViewClient.onReceivedTitle is called. 3372 * @return The title for the current page. 3373 */ 3374 public String getTitle() { 3375 checkThread(); 3376 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3377 return h != null ? h.getTitle() : null; 3378 } 3379 3380 /** 3381 * Get the favicon for the current page. This is the favicon of the current 3382 * page until WebViewClient.onReceivedIcon is called. 3383 * @return The favicon for the current page. 3384 */ 3385 public Bitmap getFavicon() { 3386 checkThread(); 3387 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3388 return h != null ? h.getFavicon() : null; 3389 } 3390 3391 /** 3392 * Get the touch icon url for the apple-touch-icon <link> element, or 3393 * a URL on this site's server pointing to the standard location of a 3394 * touch icon. 3395 * @hide 3396 */ 3397 public String getTouchIconUrl() { 3398 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3399 return h != null ? h.getTouchIconUrl() : null; 3400 } 3401 3402 /** 3403 * Get the progress for the current page. 3404 * @return The progress for the current page between 0 and 100. 3405 */ 3406 public int getProgress() { 3407 checkThread(); 3408 return mCallbackProxy.getProgress(); 3409 } 3410 3411 /** 3412 * @return the height of the HTML content. 3413 */ 3414 public int getContentHeight() { 3415 checkThread(); 3416 return mContentHeight; 3417 } 3418 3419 /** 3420 * @return the width of the HTML content. 3421 * @hide 3422 */ 3423 public int getContentWidth() { 3424 return mContentWidth; 3425 } 3426 3427 /** 3428 * @hide 3429 */ 3430 public int getPageBackgroundColor() { 3431 return nativeGetBackgroundColor(); 3432 } 3433 3434 /** 3435 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3436 * is a global requests, not restricted to just this webview. This can be 3437 * useful if the application has been paused. 3438 */ 3439 public void pauseTimers() { 3440 checkThread(); 3441 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3442 } 3443 3444 /** 3445 * Resume all layout, parsing, and JavaScript timers for all webviews. 3446 * This will resume dispatching all timers. 3447 */ 3448 public void resumeTimers() { 3449 checkThread(); 3450 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3451 } 3452 3453 /** 3454 * Call this to pause any extra processing associated with this WebView and 3455 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3456 * is taken offscreen, this could be called to reduce unnecessary CPU or 3457 * network traffic. When the WebView is again "active", call onResume(). 3458 * 3459 * Note that this differs from pauseTimers(), which affects all WebViews. 3460 */ 3461 public void onPause() { 3462 checkThread(); 3463 if (!mIsPaused) { 3464 mIsPaused = true; 3465 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3466 // We want to pause the current playing video when switching out 3467 // from the current WebView/tab. 3468 if (mHTML5VideoViewProxy != null) { 3469 mHTML5VideoViewProxy.pauseAndDispatch(); 3470 } 3471 if (mNativeClass != 0) { 3472 nativeSetPauseDrawing(mNativeClass, true); 3473 } 3474 3475 cancelSelectDialog(); 3476 WebCoreThreadWatchdog.pause(); 3477 } 3478 } 3479 3480 @Override 3481 protected void onWindowVisibilityChanged(int visibility) { 3482 super.onWindowVisibilityChanged(visibility); 3483 updateDrawingState(); 3484 } 3485 3486 void updateDrawingState() { 3487 if (mNativeClass == 0 || mIsPaused) return; 3488 if (getWindowVisibility() != VISIBLE) { 3489 nativeSetPauseDrawing(mNativeClass, true); 3490 } else if (getVisibility() != VISIBLE) { 3491 nativeSetPauseDrawing(mNativeClass, true); 3492 } else { 3493 nativeSetPauseDrawing(mNativeClass, false); 3494 } 3495 } 3496 3497 /** 3498 * Call this to resume a WebView after a previous call to onPause(). 3499 */ 3500 public void onResume() { 3501 checkThread(); 3502 if (mIsPaused) { 3503 mIsPaused = false; 3504 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3505 if (mNativeClass != 0) { 3506 nativeSetPauseDrawing(mNativeClass, false); 3507 } 3508 } 3509 // Ensure that the watchdog has a currently valid Context to be able to display 3510 // a prompt dialog. For example, if the Activity was finished whilst the WebCore 3511 // thread was blocked and the Activity is started again, we may reuse the blocked 3512 // thread, but we'll have a new Activity. 3513 WebCoreThreadWatchdog.updateContext(mContext); 3514 // We get a call to onResume for new WebViews (i.e. mIsPaused will be false). We need 3515 // to ensure that the Watchdog thread is running for the new WebView, so call 3516 // it outside the if block above. 3517 WebCoreThreadWatchdog.resume(); 3518 } 3519 3520 /** 3521 * Returns true if the view is paused, meaning onPause() was called. Calling 3522 * onResume() sets the paused state back to false. 3523 * @hide 3524 */ 3525 public boolean isPaused() { 3526 return mIsPaused; 3527 } 3528 3529 /** 3530 * Call this to inform the view that memory is low so that it can 3531 * free any available memory. 3532 */ 3533 public void freeMemory() { 3534 checkThread(); 3535 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3536 } 3537 3538 /** 3539 * Clear the resource cache. Note that the cache is per-application, so 3540 * this will clear the cache for all WebViews used. 3541 * 3542 * @param includeDiskFiles If false, only the RAM cache is cleared. 3543 */ 3544 public void clearCache(boolean includeDiskFiles) { 3545 checkThread(); 3546 // Note: this really needs to be a static method as it clears cache for all 3547 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3548 // we can't make this static. 3549 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3550 includeDiskFiles ? 1 : 0, 0); 3551 } 3552 3553 /** 3554 * Make sure that clearing the form data removes the adapter from the 3555 * currently focused textfield if there is one. 3556 */ 3557 public void clearFormData() { 3558 checkThread(); 3559 if (inEditingMode()) { 3560 mWebTextView.setAdapterCustom(null); 3561 } 3562 } 3563 3564 /** 3565 * Tell the WebView to clear its internal back/forward list. 3566 */ 3567 public void clearHistory() { 3568 checkThread(); 3569 mCallbackProxy.getBackForwardList().setClearPending(); 3570 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3571 } 3572 3573 /** 3574 * Clear the SSL preferences table stored in response to proceeding with SSL 3575 * certificate errors. 3576 */ 3577 public void clearSslPreferences() { 3578 checkThread(); 3579 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3580 } 3581 3582 /** 3583 * Return the WebBackForwardList for this WebView. This contains the 3584 * back/forward list for use in querying each item in the history stack. 3585 * This is a copy of the private WebBackForwardList so it contains only a 3586 * snapshot of the current state. Multiple calls to this method may return 3587 * different objects. The object returned from this method will not be 3588 * updated to reflect any new state. 3589 */ 3590 public WebBackForwardList copyBackForwardList() { 3591 checkThread(); 3592 return mCallbackProxy.getBackForwardList().clone(); 3593 } 3594 3595 /* 3596 * Highlight and scroll to the next occurance of String in findAll. 3597 * Wraps the page infinitely, and scrolls. Must be called after 3598 * calling findAll. 3599 * 3600 * @param forward Direction to search. 3601 */ 3602 public void findNext(boolean forward) { 3603 checkThread(); 3604 if (0 == mNativeClass) return; // client isn't initialized 3605 nativeFindNext(forward); 3606 } 3607 3608 /* 3609 * Find all instances of find on the page and highlight them. 3610 * @param find String to find. 3611 * @return int The number of occurances of the String "find" 3612 * that were found. 3613 */ 3614 public int findAll(String find) { 3615 checkThread(); 3616 if (0 == mNativeClass) return 0; // client isn't initialized 3617 int result = find != null ? nativeFindAll(find.toLowerCase(), 3618 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3619 invalidate(); 3620 mLastFind = find; 3621 return result; 3622 } 3623 3624 /** 3625 * Start an ActionMode for finding text in this WebView. Only works if this 3626 * WebView is attached to the view system. 3627 * @param text If non-null, will be the initial text to search for. 3628 * Otherwise, the last String searched for in this WebView will 3629 * be used to start. 3630 * @param showIme If true, show the IME, assuming the user will begin typing. 3631 * If false and text is non-null, perform a find all. 3632 * @return boolean True if the find dialog is shown, false otherwise. 3633 */ 3634 public boolean showFindDialog(String text, boolean showIme) { 3635 checkThread(); 3636 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3637 if (getParent() == null || startActionMode(callback) == null) { 3638 // Could not start the action mode, so end Find on page 3639 return false; 3640 } 3641 mCachedOverlappingActionModeHeight = -1; 3642 mFindCallback = callback; 3643 setFindIsUp(true); 3644 mFindCallback.setWebView(this); 3645 if (showIme) { 3646 mFindCallback.showSoftInput(); 3647 } else if (text != null) { 3648 mFindCallback.setText(text); 3649 mFindCallback.findAll(); 3650 return true; 3651 } 3652 if (text == null) { 3653 text = mLastFind; 3654 } 3655 if (text != null) { 3656 mFindCallback.setText(text); 3657 } 3658 return true; 3659 } 3660 3661 /** 3662 * Keep track of the find callback so that we can remove its titlebar if 3663 * necessary. 3664 */ 3665 private FindActionModeCallback mFindCallback; 3666 3667 /** 3668 * Toggle whether the find dialog is showing, for both native and Java. 3669 */ 3670 private void setFindIsUp(boolean isUp) { 3671 mFindIsUp = isUp; 3672 if (0 == mNativeClass) return; // client isn't initialized 3673 nativeSetFindIsUp(isUp); 3674 } 3675 3676 /** 3677 * Return the index of the currently highlighted match. 3678 */ 3679 int findIndex() { 3680 if (0 == mNativeClass) return -1; 3681 return nativeFindIndex(); 3682 } 3683 3684 // Used to know whether the find dialog is open. Affects whether 3685 // or not we draw the highlights for matches. 3686 private boolean mFindIsUp; 3687 3688 // Keep track of the last string sent, so we can search again when find is 3689 // reopened. 3690 private String mLastFind; 3691 3692 /** 3693 * Return the first substring consisting of the address of a physical 3694 * location. Currently, only addresses in the United States are detected, 3695 * and consist of: 3696 * - a house number 3697 * - a street name 3698 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3699 * - a city name 3700 * - a state or territory, either spelled out or two-letter abbr. 3701 * - an optional 5 digit or 9 digit zip code. 3702 * 3703 * All names must be correctly capitalized, and the zip code, if present, 3704 * must be valid for the state. The street type must be a standard USPS 3705 * spelling or abbreviation. The state or territory must also be spelled 3706 * or abbreviated using USPS standards. The house number may not exceed 3707 * five digits. 3708 * @param addr The string to search for addresses. 3709 * 3710 * @return the address, or if no address is found, return null. 3711 */ 3712 public static String findAddress(String addr) { 3713 checkThread(); 3714 return findAddress(addr, false); 3715 } 3716 3717 /** 3718 * @hide 3719 * Return the first substring consisting of the address of a physical 3720 * location. Currently, only addresses in the United States are detected, 3721 * and consist of: 3722 * - a house number 3723 * - a street name 3724 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3725 * - a city name 3726 * - a state or territory, either spelled out or two-letter abbr. 3727 * - an optional 5 digit or 9 digit zip code. 3728 * 3729 * Names are optionally capitalized, and the zip code, if present, 3730 * must be valid for the state. The street type must be a standard USPS 3731 * spelling or abbreviation. The state or territory must also be spelled 3732 * or abbreviated using USPS standards. The house number may not exceed 3733 * five digits. 3734 * @param addr The string to search for addresses. 3735 * @param caseInsensitive addr Set to true to make search ignore case. 3736 * 3737 * @return the address, or if no address is found, return null. 3738 */ 3739 public static String findAddress(String addr, boolean caseInsensitive) { 3740 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3741 } 3742 3743 /* 3744 * Clear the highlighting surrounding text matches created by findAll. 3745 */ 3746 public void clearMatches() { 3747 checkThread(); 3748 if (mNativeClass == 0) 3749 return; 3750 nativeSetFindIsEmpty(); 3751 invalidate(); 3752 } 3753 3754 /** 3755 * Called when the find ActionMode ends. 3756 */ 3757 void notifyFindDialogDismissed() { 3758 mFindCallback = null; 3759 mCachedOverlappingActionModeHeight = -1; 3760 if (mWebViewCore == null) { 3761 return; 3762 } 3763 clearMatches(); 3764 setFindIsUp(false); 3765 // Now that the dialog has been removed, ensure that we scroll to a 3766 // location that is not beyond the end of the page. 3767 pinScrollTo(mScrollX, mScrollY, false, 0); 3768 invalidate(); 3769 } 3770 3771 /** 3772 * Query the document to see if it contains any image references. The 3773 * message object will be dispatched with arg1 being set to 1 if images 3774 * were found and 0 if the document does not reference any images. 3775 * @param response The message that will be dispatched with the result. 3776 */ 3777 public void documentHasImages(Message response) { 3778 checkThread(); 3779 if (response == null) { 3780 return; 3781 } 3782 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3783 } 3784 3785 /** 3786 * Request the scroller to abort any ongoing animation 3787 * 3788 * @hide 3789 */ 3790 public void stopScroll() { 3791 mScroller.forceFinished(true); 3792 mLastVelocity = 0; 3793 } 3794 3795 @Override 3796 public void computeScroll() { 3797 if (mScroller.computeScrollOffset()) { 3798 int oldX = mScrollX; 3799 int oldY = mScrollY; 3800 int x = mScroller.getCurrX(); 3801 int y = mScroller.getCurrY(); 3802 invalidate(); // So we draw again 3803 3804 if (!mScroller.isFinished()) { 3805 int rangeX = computeMaxScrollX(); 3806 int rangeY = computeMaxScrollY(); 3807 int overflingDistance = mOverflingDistance; 3808 3809 // Use the layer's scroll data if needed. 3810 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3811 oldX = mScrollingLayerRect.left; 3812 oldY = mScrollingLayerRect.top; 3813 rangeX = mScrollingLayerRect.right; 3814 rangeY = mScrollingLayerRect.bottom; 3815 // No overscrolling for layers. 3816 overflingDistance = 0; 3817 } 3818 3819 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3820 rangeX, rangeY, 3821 overflingDistance, overflingDistance, false); 3822 3823 if (mOverScrollGlow != null) { 3824 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3825 } 3826 } else { 3827 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3828 mScrollX = x; 3829 mScrollY = y; 3830 } else { 3831 // Update the layer position instead of WebView. 3832 scrollLayerTo(x, y); 3833 } 3834 abortAnimation(); 3835 nativeSetIsScrolling(false); 3836 if (!mBlockWebkitViewMessages) { 3837 WebViewCore.resumePriority(); 3838 if (!mSelectingText) { 3839 WebViewCore.resumeUpdatePicture(mWebViewCore); 3840 } 3841 } 3842 if (oldX != mScrollX || oldY != mScrollY) { 3843 sendOurVisibleRect(); 3844 } 3845 } 3846 } else { 3847 super.computeScroll(); 3848 } 3849 } 3850 3851 private void scrollLayerTo(int x, int y) { 3852 if (x == mScrollingLayerRect.left && y == mScrollingLayerRect.top) { 3853 return; 3854 } 3855 nativeScrollLayer(mCurrentScrollingLayerId, x, y); 3856 mScrollingLayerRect.left = x; 3857 mScrollingLayerRect.top = y; 3858 mWebViewCore.sendMessage(WebViewCore.EventHub.SCROLL_LAYER, mCurrentScrollingLayerId, 3859 mScrollingLayerRect); 3860 onScrollChanged(mScrollX, mScrollY, mScrollX, mScrollY); 3861 invalidate(); 3862 } 3863 3864 private static int computeDuration(int dx, int dy) { 3865 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3866 int duration = distance * 1000 / STD_SPEED; 3867 return Math.min(duration, MAX_DURATION); 3868 } 3869 3870 // helper to pin the scrollBy parameters (already in view coordinates) 3871 // returns true if the scroll was changed 3872 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3873 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3874 } 3875 // helper to pin the scrollTo parameters (already in view coordinates) 3876 // returns true if the scroll was changed 3877 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3878 x = pinLocX(x); 3879 y = pinLocY(y); 3880 int dx = x - mScrollX; 3881 int dy = y - mScrollY; 3882 3883 if ((dx | dy) == 0) { 3884 return false; 3885 } 3886 abortAnimation(); 3887 if (animate) { 3888 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3889 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3890 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3891 awakenScrollBars(mScroller.getDuration()); 3892 invalidate(); 3893 } else { 3894 scrollTo(x, y); 3895 } 3896 return true; 3897 } 3898 3899 // Scale from content to view coordinates, and pin. 3900 // Also called by jni webview.cpp 3901 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3902 if (mDrawHistory) { 3903 // disallow WebView to change the scroll position as History Picture 3904 // is used in the view system. 3905 // TODO: as we switchOutDrawHistory when trackball or navigation 3906 // keys are hit, this should be safe. Right? 3907 return false; 3908 } 3909 cx = contentToViewDimension(cx); 3910 cy = contentToViewDimension(cy); 3911 if (mHeightCanMeasure) { 3912 // move our visible rect according to scroll request 3913 if (cy != 0) { 3914 Rect tempRect = new Rect(); 3915 calcOurVisibleRect(tempRect); 3916 tempRect.offset(cx, cy); 3917 requestRectangleOnScreen(tempRect); 3918 } 3919 // FIXME: We scroll horizontally no matter what because currently 3920 // ScrollView and ListView will not scroll horizontally. 3921 // FIXME: Why do we only scroll horizontally if there is no 3922 // vertical scroll? 3923// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3924 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3925 } else { 3926 return pinScrollBy(cx, cy, animate, 0); 3927 } 3928 } 3929 3930 /** 3931 * Called by CallbackProxy when the page starts loading. 3932 * @param url The URL of the page which has started loading. 3933 */ 3934 /* package */ void onPageStarted(String url) { 3935 // every time we start a new page, we want to reset the 3936 // WebView certificate: if the new site is secure, we 3937 // will reload it and get a new certificate set; 3938 // if the new site is not secure, the certificate must be 3939 // null, and that will be the case 3940 setCertificate(null); 3941 3942 // reset the flag since we set to true in if need after 3943 // loading is see onPageFinished(Url) 3944 mAccessibilityScriptInjected = false; 3945 } 3946 3947 /** 3948 * Called by CallbackProxy when the page finishes loading. 3949 * @param url The URL of the page which has finished loading. 3950 */ 3951 /* package */ void onPageFinished(String url) { 3952 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3953 // If the user is now on a different page, or has scrolled the page 3954 // past the point where the title bar is offscreen, ignore the 3955 // scroll request. 3956 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3957 && mScrollX == 0 && mScrollY == 0) { 3958 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3959 SLIDE_TITLE_DURATION); 3960 } 3961 mPageThatNeedsToSlideTitleBarOffScreen = null; 3962 } 3963 mZoomManager.onPageFinished(url); 3964 injectAccessibilityForUrl(url); 3965 } 3966 3967 /** 3968 * This method injects accessibility in the loaded document if accessibility 3969 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3970 * If no URL specific script is found or JavaScript is disabled we fallback to 3971 * the default {@link AccessibilityInjector} implementation. 3972 * </p> 3973 * If the URL has the "axs" paramter set to 1 it has already done the 3974 * script injection so we do nothing. If the parameter is set to 0 3975 * the URL opts out accessibility script injection so we fall back to 3976 * the default {@link AccessibilityInjector}. 3977 * </p> 3978 * Note: If the user has not opted-in the accessibility script injection no scripts 3979 * are injected rather the default {@link AccessibilityInjector} implementation 3980 * is used. 3981 * 3982 * @param url The URL loaded by this {@link WebView}. 3983 */ 3984 private void injectAccessibilityForUrl(String url) { 3985 if (mWebViewCore == null) { 3986 return; 3987 } 3988 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3989 3990 if (!accessibilityManager.isEnabled()) { 3991 // it is possible that accessibility was turned off between reloads 3992 ensureAccessibilityScriptInjectorInstance(false); 3993 return; 3994 } 3995 3996 if (!getSettings().getJavaScriptEnabled()) { 3997 // no JS so we fallback to the basic buil-in support 3998 ensureAccessibilityScriptInjectorInstance(true); 3999 return; 4000 } 4001 4002 // check the URL "axs" parameter to choose appropriate action 4003 int axsParameterValue = getAxsUrlParameterValue(url); 4004 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 4005 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 4006 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 4007 if (onDeviceScriptInjectionEnabled) { 4008 ensureAccessibilityScriptInjectorInstance(false); 4009 // neither script injected nor script injection opted out => we inject 4010 loadUrl(getScreenReaderInjectingJs()); 4011 // TODO: Set this flag after successfull script injection. Maybe upon injection 4012 // the chooser should update the meta tag and we check it to declare success 4013 mAccessibilityScriptInjected = true; 4014 } else { 4015 // injection disabled so we fallback to the basic built-in support 4016 ensureAccessibilityScriptInjectorInstance(true); 4017 } 4018 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 4019 // injection opted out so we fallback to the basic buil-in support 4020 ensureAccessibilityScriptInjectorInstance(true); 4021 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 4022 ensureAccessibilityScriptInjectorInstance(false); 4023 // the URL provides accessibility but we still need to add our generic script 4024 loadUrl(getScreenReaderInjectingJs()); 4025 } else { 4026 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 4027 } 4028 } 4029 4030 /** 4031 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 4032 * 4033 * @param present True to ensure an insance, false to ensure no instance. 4034 */ 4035 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 4036 if (present) { 4037 if (mAccessibilityInjector == null) { 4038 mAccessibilityInjector = new AccessibilityInjector(this); 4039 } 4040 } else { 4041 mAccessibilityInjector = null; 4042 } 4043 } 4044 4045 /** 4046 * Gets JavaScript that injects a screen-reader. 4047 * 4048 * @return The JavaScript snippet. 4049 */ 4050 private String getScreenReaderInjectingJs() { 4051 String screenReaderUrl = Settings.Secure.getString(mContext.getContentResolver(), 4052 Settings.Secure.ACCESSIBILITY_SCREEN_READER_URL); 4053 return String.format(ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE, screenReaderUrl); 4054 } 4055 4056 /** 4057 * Gets the "axs" URL parameter value. 4058 * 4059 * @param url A url to fetch the paramter from. 4060 * @return The parameter value if such, -1 otherwise. 4061 */ 4062 private int getAxsUrlParameterValue(String url) { 4063 if (mMatchAxsUrlParameterPattern == null) { 4064 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 4065 } 4066 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 4067 if (matcher.find()) { 4068 String keyValuePair = url.substring(matcher.start(), matcher.end()); 4069 return Integer.parseInt(keyValuePair.split("=")[1]); 4070 } 4071 return -1; 4072 } 4073 4074 /** 4075 * The URL of a page that sent a message to scroll the title bar off screen. 4076 * 4077 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 4078 * title bar off the screen. Sometimes, the scroll position is set before 4079 * the page finishes loading. Rather than scrolling while the page is still 4080 * loading, keep track of the URL and new scroll position so we can perform 4081 * the scroll once the page finishes loading. 4082 */ 4083 private String mPageThatNeedsToSlideTitleBarOffScreen; 4084 4085 /** 4086 * The destination Y scroll position to be used when the page finishes 4087 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 4088 */ 4089 private int mYDistanceToSlideTitleOffScreen; 4090 4091 // scale from content to view coordinates, and pin 4092 // return true if pin caused the final x/y different than the request cx/cy, 4093 // and a future scroll may reach the request cx/cy after our size has 4094 // changed 4095 // return false if the view scroll to the exact position as it is requested, 4096 // where negative numbers are taken to mean 0 4097 private boolean setContentScrollTo(int cx, int cy) { 4098 if (mDrawHistory) { 4099 // disallow WebView to change the scroll position as History Picture 4100 // is used in the view system. 4101 // One known case where this is called is that WebCore tries to 4102 // restore the scroll position. As history Picture already uses the 4103 // saved scroll position, it is ok to skip this. 4104 return false; 4105 } 4106 int vx; 4107 int vy; 4108 if ((cx | cy) == 0) { 4109 // If the page is being scrolled to (0,0), do not add in the title 4110 // bar's height, and simply scroll to (0,0). (The only other work 4111 // in contentToView_ is to multiply, so this would not change 0.) 4112 vx = 0; 4113 vy = 0; 4114 } else { 4115 vx = contentToViewX(cx); 4116 vy = contentToViewY(cy); 4117 } 4118// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 4119// vx + " " + vy + "]"); 4120 // Some mobile sites attempt to scroll the title bar off the page by 4121 // scrolling to (0,1). If we are at the top left corner of the 4122 // page, assume this is an attempt to scroll off the title bar, and 4123 // animate the title bar off screen slowly enough that the user can see 4124 // it. 4125 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 4126 && mTitleBar != null) { 4127 // FIXME: 100 should be defined somewhere as our max progress. 4128 if (getProgress() < 100) { 4129 // Wait to scroll the title bar off screen until the page has 4130 // finished loading. Keep track of the URL and the destination 4131 // Y position 4132 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 4133 mYDistanceToSlideTitleOffScreen = vy; 4134 } else { 4135 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 4136 } 4137 // Since we are animating, we have not yet reached the desired 4138 // scroll position. Do not return true to request another attempt 4139 return false; 4140 } 4141 pinScrollTo(vx, vy, false, 0); 4142 // If the request was to scroll to a negative coordinate, treat it as if 4143 // it was a request to scroll to 0 4144 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 4145 return true; 4146 } else { 4147 return false; 4148 } 4149 } 4150 4151 // scale from content to view coordinates, and pin 4152 private void spawnContentScrollTo(int cx, int cy) { 4153 if (mDrawHistory) { 4154 // disallow WebView to change the scroll position as History Picture 4155 // is used in the view system. 4156 return; 4157 } 4158 int vx = contentToViewX(cx); 4159 int vy = contentToViewY(cy); 4160 pinScrollTo(vx, vy, true, 0); 4161 } 4162 4163 /** 4164 * These are from webkit, and are in content coordinate system (unzoomed) 4165 */ 4166 private void contentSizeChanged(boolean updateLayout) { 4167 // suppress 0,0 since we usually see real dimensions soon after 4168 // this avoids drawing the prev content in a funny place. If we find a 4169 // way to consolidate these notifications, this check may become 4170 // obsolete 4171 if ((mContentWidth | mContentHeight) == 0) { 4172 return; 4173 } 4174 4175 if (mHeightCanMeasure) { 4176 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 4177 || updateLayout) { 4178 requestLayout(); 4179 } 4180 } else if (mWidthCanMeasure) { 4181 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 4182 || updateLayout) { 4183 requestLayout(); 4184 } 4185 } else { 4186 // If we don't request a layout, try to send our view size to the 4187 // native side to ensure that WebCore has the correct dimensions. 4188 sendViewSizeZoom(false); 4189 } 4190 } 4191 4192 /** 4193 * Set the WebViewClient that will receive various notifications and 4194 * requests. This will replace the current handler. 4195 * @param client An implementation of WebViewClient. 4196 */ 4197 public void setWebViewClient(WebViewClient client) { 4198 checkThread(); 4199 mCallbackProxy.setWebViewClient(client); 4200 } 4201 4202 /** 4203 * Gets the WebViewClient 4204 * @return the current WebViewClient instance. 4205 * 4206 * @hide This is an implementation detail. 4207 */ 4208 public WebViewClient getWebViewClient() { 4209 return mCallbackProxy.getWebViewClient(); 4210 } 4211 4212 /** 4213 * Register the interface to be used when content can not be handled by 4214 * the rendering engine, and should be downloaded instead. This will replace 4215 * the current handler. 4216 * @param listener An implementation of DownloadListener. 4217 */ 4218 public void setDownloadListener(DownloadListener listener) { 4219 checkThread(); 4220 mCallbackProxy.setDownloadListener(listener); 4221 } 4222 4223 /** 4224 * Set the chrome handler. This is an implementation of WebChromeClient for 4225 * use in handling JavaScript dialogs, favicons, titles, and the progress. 4226 * This will replace the current handler. 4227 * @param client An implementation of WebChromeClient. 4228 */ 4229 public void setWebChromeClient(WebChromeClient client) { 4230 checkThread(); 4231 mCallbackProxy.setWebChromeClient(client); 4232 } 4233 4234 /** 4235 * Gets the chrome handler. 4236 * @return the current WebChromeClient instance. 4237 * 4238 * @hide This is an implementation detail. 4239 */ 4240 public WebChromeClient getWebChromeClient() { 4241 return mCallbackProxy.getWebChromeClient(); 4242 } 4243 4244 /** 4245 * Set the back/forward list client. This is an implementation of 4246 * WebBackForwardListClient for handling new items and changes in the 4247 * history index. 4248 * @param client An implementation of WebBackForwardListClient. 4249 * {@hide} 4250 */ 4251 public void setWebBackForwardListClient(WebBackForwardListClient client) { 4252 mCallbackProxy.setWebBackForwardListClient(client); 4253 } 4254 4255 /** 4256 * Gets the WebBackForwardListClient. 4257 * {@hide} 4258 */ 4259 public WebBackForwardListClient getWebBackForwardListClient() { 4260 return mCallbackProxy.getWebBackForwardListClient(); 4261 } 4262 4263 /** 4264 * Set the Picture listener. This is an interface used to receive 4265 * notifications of a new Picture. 4266 * @param listener An implementation of WebView.PictureListener. 4267 * @deprecated This method is now obsolete. 4268 */ 4269 @Deprecated 4270 public void setPictureListener(PictureListener listener) { 4271 checkThread(); 4272 mPictureListener = listener; 4273 } 4274 4275 /** 4276 * {@hide} 4277 */ 4278 /* FIXME: Debug only! Remove for SDK! */ 4279 public void externalRepresentation(Message callback) { 4280 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 4281 } 4282 4283 /** 4284 * {@hide} 4285 */ 4286 /* FIXME: Debug only! Remove for SDK! */ 4287 public void documentAsText(Message callback) { 4288 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 4289 } 4290 4291 /** 4292 * This method injects the supplied Java object into the WebView. The 4293 * object is injected into the JavaScript context of the main frame, using 4294 * the supplied name. This allows the Java object to be accessed from 4295 * JavaScript. Note that that injected objects will not appear in 4296 * JavaScript until the page is next (re)loaded. For example: 4297 * <pre> webView.addJavascriptInterface(new Object(), "injectedObject"); 4298 * webView.loadData("<!DOCTYPE html><title></title>", "text/html", null); 4299 * webView.loadUrl("javascript:alert(injectedObject.toString())");</pre> 4300 * <p><strong>IMPORTANT:</strong> 4301 * <ul> 4302 * <li> addJavascriptInterface() can be used to allow JavaScript to control 4303 * the host application. This is a powerful feature, but also presents a 4304 * security risk. Use of this method in a WebView containing untrusted 4305 * content could allow an attacker to manipulate the host application in 4306 * unintended ways, executing Java code with the permissions of the host 4307 * application. Use extreme care when using this method in a WebView which 4308 * could contain untrusted content. 4309 * <li> JavaScript interacts with Java object on a private, background 4310 * thread of the WebView. Care is therefore required to maintain thread 4311 * safety.</li> 4312 * </ul></p> 4313 * @param object The Java object to inject into the WebView's JavaScript 4314 * context. Null values are ignored. 4315 * @param name The name used to expose the instance in JavaScript. 4316 */ 4317 public void addJavascriptInterface(Object object, String name) { 4318 checkThread(); 4319 if (object == null) { 4320 return; 4321 } 4322 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4323 arg.mObject = object; 4324 arg.mInterfaceName = name; 4325 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 4326 } 4327 4328 /** 4329 * Removes a previously added JavaScript interface with the given name. 4330 * @param interfaceName The name of the interface to remove. 4331 */ 4332 public void removeJavascriptInterface(String interfaceName) { 4333 checkThread(); 4334 if (mWebViewCore != null) { 4335 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4336 arg.mInterfaceName = interfaceName; 4337 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 4338 } 4339 } 4340 4341 /** 4342 * Return the WebSettings object used to control the settings for this 4343 * WebView. 4344 * @return A WebSettings object that can be used to control this WebView's 4345 * settings. 4346 */ 4347 public WebSettings getSettings() { 4348 checkThread(); 4349 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4350 } 4351 4352 /** 4353 * Return the list of currently loaded plugins. 4354 * @return The list of currently loaded plugins. 4355 * 4356 * @hide 4357 * @deprecated This was used for Gears, which has been deprecated. 4358 */ 4359 @Deprecated 4360 public static synchronized PluginList getPluginList() { 4361 checkThread(); 4362 return new PluginList(); 4363 } 4364 4365 /** 4366 * @hide 4367 * @deprecated This was used for Gears, which has been deprecated. 4368 */ 4369 @Deprecated 4370 public void refreshPlugins(boolean reloadOpenPages) { 4371 checkThread(); 4372 } 4373 4374 //------------------------------------------------------------------------- 4375 // Override View methods 4376 //------------------------------------------------------------------------- 4377 4378 @Override 4379 protected void finalize() throws Throwable { 4380 try { 4381 if (mNativeClass != 0) { 4382 mPrivateHandler.post(new Runnable() { 4383 @Override 4384 public void run() { 4385 destroy(); 4386 } 4387 }); 4388 } 4389 } finally { 4390 super.finalize(); 4391 } 4392 } 4393 4394 @Override 4395 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 4396 if (child == mTitleBar) { 4397 // When drawing the title bar, move it horizontally to always show 4398 // at the top of the WebView. 4399 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 4400 int newTop = 0; 4401 if (mTitleGravity == Gravity.NO_GRAVITY) { 4402 newTop = Math.min(0, mScrollY); 4403 } else if (mTitleGravity == Gravity.TOP) { 4404 newTop = mScrollY; 4405 } 4406 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 4407 mTitleBar.setTop(newTop); 4408 } 4409 return super.drawChild(canvas, child, drawingTime); 4410 } 4411 4412 private void drawContent(Canvas canvas, boolean drawRings) { 4413 drawCoreAndCursorRing(canvas, mBackgroundColor, 4414 mDrawCursorRing && drawRings); 4415 } 4416 4417 /** 4418 * Draw the background when beyond bounds 4419 * @param canvas Canvas to draw into 4420 */ 4421 private void drawOverScrollBackground(Canvas canvas) { 4422 if (mOverScrollBackground == null) { 4423 mOverScrollBackground = new Paint(); 4424 Bitmap bm = BitmapFactory.decodeResource( 4425 mContext.getResources(), 4426 com.android.internal.R.drawable.status_bar_background); 4427 mOverScrollBackground.setShader(new BitmapShader(bm, 4428 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4429 mOverScrollBorder = new Paint(); 4430 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4431 mOverScrollBorder.setStrokeWidth(0); 4432 mOverScrollBorder.setColor(0xffbbbbbb); 4433 } 4434 4435 int top = 0; 4436 int right = computeRealHorizontalScrollRange(); 4437 int bottom = top + computeRealVerticalScrollRange(); 4438 // first draw the background and anchor to the top of the view 4439 canvas.save(); 4440 canvas.translate(mScrollX, mScrollY); 4441 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4442 - mScrollY, Region.Op.DIFFERENCE); 4443 canvas.drawPaint(mOverScrollBackground); 4444 canvas.restore(); 4445 // then draw the border 4446 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4447 // next clip the region for the content 4448 canvas.clipRect(0, top, right, bottom); 4449 } 4450 4451 @Override 4452 protected void onDraw(Canvas canvas) { 4453 if (inFullScreenMode()) { 4454 return; // no need to draw anything if we aren't visible. 4455 } 4456 // if mNativeClass is 0, the WebView is either destroyed or not 4457 // initialized. In either case, just draw the background color and return 4458 if (mNativeClass == 0) { 4459 canvas.drawColor(mBackgroundColor); 4460 return; 4461 } 4462 4463 // if both mContentWidth and mContentHeight are 0, it means there is no 4464 // valid Picture passed to WebView yet. This can happen when WebView 4465 // just starts. Draw the background and return. 4466 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4467 canvas.drawColor(mBackgroundColor); 4468 return; 4469 } 4470 4471 if (canvas.isHardwareAccelerated()) { 4472 mZoomManager.setHardwareAccelerated(); 4473 } 4474 4475 int saveCount = canvas.save(); 4476 if (mInOverScrollMode && !getSettings() 4477 .getUseWebViewBackgroundForOverscrollBackground()) { 4478 drawOverScrollBackground(canvas); 4479 } 4480 if (mTitleBar != null) { 4481 canvas.translate(0, getTitleHeight()); 4482 } 4483 boolean drawJavaRings = !mTouchHighlightRegion.isEmpty() 4484 && (mTouchMode == TOUCH_INIT_MODE 4485 || mTouchMode == TOUCH_SHORTPRESS_START_MODE 4486 || mTouchMode == TOUCH_SHORTPRESS_MODE 4487 || mTouchMode == TOUCH_DONE_MODE); 4488 boolean drawNativeRings = !drawJavaRings; 4489 if (sDisableNavcache) { 4490 drawNativeRings = !drawJavaRings && !isInTouchMode(); 4491 } 4492 drawContent(canvas, drawNativeRings); 4493 canvas.restoreToCount(saveCount); 4494 4495 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4496 invalidate(); 4497 } 4498 mWebViewCore.signalRepaintDone(); 4499 4500 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4501 invalidate(); 4502 } 4503 4504 // paint the highlight in the end 4505 if (drawJavaRings) { 4506 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 4507 if (delay < ViewConfiguration.getTapTimeout()) { 4508 Rect r = mTouchHighlightRegion.getBounds(); 4509 postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 4510 } else { 4511 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4512 Rect r = new Rect(); 4513 while (iter.next(r)) { 4514 canvas.drawRect(r, mTouchHightlightPaint); 4515 } 4516 } 4517 } 4518 if (DEBUG_TOUCH_HIGHLIGHT) { 4519 if (getSettings().getNavDump()) { 4520 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4521 if (mTouchCrossHairColor == null) { 4522 mTouchCrossHairColor = new Paint(); 4523 mTouchCrossHairColor.setColor(Color.RED); 4524 } 4525 canvas.drawLine(mTouchHighlightX - mNavSlop, 4526 mTouchHighlightY - mNavSlop, mTouchHighlightX 4527 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4528 + 1, mTouchCrossHairColor); 4529 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4530 mTouchHighlightY - mNavSlop, mTouchHighlightX 4531 - mNavSlop, 4532 mTouchHighlightY + mNavSlop + 1, 4533 mTouchCrossHairColor); 4534 } 4535 } 4536 } 4537 } 4538 4539 private void removeTouchHighlight() { 4540 mWebViewCore.removeMessages(EventHub.HIT_TEST); 4541 mPrivateHandler.removeMessages(HIT_TEST_RESULT); 4542 setTouchHighlightRects(null); 4543 } 4544 4545 @Override 4546 public void setLayoutParams(ViewGroup.LayoutParams params) { 4547 if (params.height == LayoutParams.WRAP_CONTENT) { 4548 mWrapContent = true; 4549 } 4550 super.setLayoutParams(params); 4551 } 4552 4553 @Override 4554 public boolean performLongClick() { 4555 // performLongClick() is the result of a delayed message. If we switch 4556 // to windows overview, the WebView will be temporarily removed from the 4557 // view system. In that case, do nothing. 4558 if (getParent() == null) return false; 4559 4560 // A multi-finger gesture can look like a long press; make sure we don't take 4561 // long press actions if we're scaling. 4562 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4563 if (detector != null && detector.isInProgress()) { 4564 return false; 4565 } 4566 4567 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4568 // Send the click so that the textfield is in focus 4569 centerKeyPressOnTextField(); 4570 rebuildWebTextView(); 4571 } else { 4572 clearTextEntry(); 4573 } 4574 if (inEditingMode()) { 4575 // Since we just called rebuildWebTextView, the layout is not set 4576 // properly. Update it so it can correctly find the word to select. 4577 mWebTextView.ensureLayout(); 4578 // Provide a touch down event to WebTextView, which will allow it 4579 // to store the location to use in performLongClick. 4580 AbsoluteLayout.LayoutParams params 4581 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4582 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4583 mLastTouchTime, MotionEvent.ACTION_DOWN, 4584 mLastTouchX - params.x + mScrollX, 4585 mLastTouchY - params.y + mScrollY, 0); 4586 mWebTextView.dispatchTouchEvent(fake); 4587 return mWebTextView.performLongClick(); 4588 } 4589 if (mSelectingText) return false; // long click does nothing on selection 4590 /* if long click brings up a context menu, the super function 4591 * returns true and we're done. Otherwise, nothing happened when 4592 * the user clicked. */ 4593 if (super.performLongClick()) { 4594 return true; 4595 } 4596 /* In the case where the application hasn't already handled the long 4597 * click action, look for a word under the click. If one is found, 4598 * animate the text selection into view. 4599 * FIXME: no animation code yet */ 4600 final boolean isSelecting = selectText(); 4601 if (isSelecting) { 4602 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4603 } else if (focusCandidateIsEditableText()) { 4604 mSelectCallback = new SelectActionModeCallback(); 4605 mSelectCallback.setWebView(this); 4606 mSelectCallback.setTextSelected(false); 4607 startActionMode(mSelectCallback); 4608 } 4609 return isSelecting; 4610 } 4611 4612 /** 4613 * Select the word at the last click point. 4614 * 4615 * @hide This is an implementation detail. 4616 */ 4617 public boolean selectText() { 4618 int x = viewToContentX(mLastTouchX + mScrollX); 4619 int y = viewToContentY(mLastTouchY + mScrollY); 4620 return selectText(x, y); 4621 } 4622 4623 /** 4624 * Select the word at the indicated content coordinates. 4625 */ 4626 boolean selectText(int x, int y) { 4627 if (!setUpSelect(true, x, y)) { 4628 return false; 4629 } 4630 nativeSetExtendSelection(); 4631 mDrawSelectionPointer = false; 4632 mTouchMode = TOUCH_DRAG_MODE; 4633 return true; 4634 } 4635 4636 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4637 4638 @Override 4639 protected void onConfigurationChanged(Configuration newConfig) { 4640 mCachedOverlappingActionModeHeight = -1; 4641 if (mSelectingText && mOrientation != newConfig.orientation) { 4642 selectionDone(); 4643 } 4644 mOrientation = newConfig.orientation; 4645 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 4646 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4647 } 4648 } 4649 4650 /** 4651 * Keep track of the Callback so we can end its ActionMode or remove its 4652 * titlebar. 4653 */ 4654 private SelectActionModeCallback mSelectCallback; 4655 4656 // These values are possible options for didUpdateWebTextViewDimensions. 4657 private static final int FULLY_ON_SCREEN = 0; 4658 private static final int INTERSECTS_SCREEN = 1; 4659 private static final int ANYWHERE = 2; 4660 4661 /** 4662 * Check to see if the focused textfield/textarea is still on screen. If it 4663 * is, update the the dimensions and location of WebTextView. Otherwise, 4664 * remove the WebTextView. Should be called when the zoom level changes. 4665 * @param intersection How to determine whether the textfield/textarea is 4666 * still on screen. 4667 * @return boolean True if the textfield/textarea is still on screen and the 4668 * dimensions/location of WebTextView have been updated. 4669 */ 4670 private boolean didUpdateWebTextViewDimensions(int intersection) { 4671 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4672 Rect vBox = contentToViewRect(contentBounds); 4673 Rect visibleRect = new Rect(); 4674 calcOurVisibleRect(visibleRect); 4675 offsetByLayerScrollPosition(vBox); 4676 // If the textfield is on screen, place the WebTextView in 4677 // its new place, accounting for our new scroll/zoom values, 4678 // and adjust its textsize. 4679 boolean onScreen; 4680 switch (intersection) { 4681 case FULLY_ON_SCREEN: 4682 onScreen = visibleRect.contains(vBox); 4683 break; 4684 case INTERSECTS_SCREEN: 4685 onScreen = Rect.intersects(visibleRect, vBox); 4686 break; 4687 case ANYWHERE: 4688 onScreen = true; 4689 break; 4690 default: 4691 throw new AssertionError( 4692 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4693 } 4694 if (onScreen) { 4695 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4696 vBox.height()); 4697 mWebTextView.updateTextSize(); 4698 updateWebTextViewPadding(); 4699 return true; 4700 } else { 4701 // The textfield is now off screen. The user probably 4702 // was not zooming to see the textfield better. Remove 4703 // the WebTextView. If the user types a key, and the 4704 // textfield is still in focus, we will reconstruct 4705 // the WebTextView and scroll it back on screen. 4706 mWebTextView.remove(); 4707 return false; 4708 } 4709 } 4710 4711 private void offsetByLayerScrollPosition(Rect box) { 4712 if ((mCurrentScrollingLayerId != 0) 4713 && (mCurrentScrollingLayerId == nativeFocusCandidateLayerId())) { 4714 box.offsetTo(box.left - mScrollingLayerRect.left, 4715 box.top - mScrollingLayerRect.top); 4716 } 4717 } 4718 4719 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4720 boolean isPictureAfterFirstLayout, boolean registerPageSwapCallback) { 4721 if (mNativeClass == 0) 4722 return; 4723 nativeSetBaseLayer(mNativeClass, layer, invalRegion, showVisualIndicator, 4724 isPictureAfterFirstLayout, registerPageSwapCallback); 4725 if (mHTML5VideoViewProxy != null) { 4726 mHTML5VideoViewProxy.setBaseLayer(layer); 4727 } 4728 } 4729 4730 int getBaseLayer() { 4731 if (mNativeClass == 0) { 4732 return 0; 4733 } 4734 return nativeGetBaseLayer(); 4735 } 4736 4737 private void onZoomAnimationStart() { 4738 // If it is in password mode, turn it off so it does not draw misplaced. 4739 if (inEditingMode()) { 4740 mWebTextView.setVisibility(INVISIBLE); 4741 } 4742 } 4743 4744 private void onZoomAnimationEnd() { 4745 // adjust the edit text view if needed 4746 if (inEditingMode() 4747 && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) { 4748 // If it is a password field, start drawing the WebTextView once 4749 // again. 4750 mWebTextView.setVisibility(VISIBLE); 4751 } 4752 } 4753 4754 void onFixedLengthZoomAnimationStart() { 4755 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4756 onZoomAnimationStart(); 4757 } 4758 4759 void onFixedLengthZoomAnimationEnd() { 4760 if (!mBlockWebkitViewMessages && !mSelectingText) { 4761 WebViewCore.resumeUpdatePicture(mWebViewCore); 4762 } 4763 onZoomAnimationEnd(); 4764 } 4765 4766 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4767 Paint.DITHER_FLAG | 4768 Paint.SUBPIXEL_TEXT_FLAG; 4769 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4770 Paint.DITHER_FLAG; 4771 4772 private final DrawFilter mZoomFilter = 4773 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4774 // If we need to trade better quality for speed, set mScrollFilter to null 4775 private final DrawFilter mScrollFilter = 4776 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4777 4778 private void drawCoreAndCursorRing(Canvas canvas, int color, 4779 boolean drawCursorRing) { 4780 if (mDrawHistory) { 4781 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4782 canvas.drawPicture(mHistoryPicture); 4783 return; 4784 } 4785 if (mNativeClass == 0) return; 4786 4787 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4788 boolean animateScroll = ((!mScroller.isFinished() 4789 || mVelocityTracker != null) 4790 && (mTouchMode != TOUCH_DRAG_MODE || 4791 mHeldMotionless != MOTIONLESS_TRUE)) 4792 || mDeferTouchMode == TOUCH_DRAG_MODE; 4793 if (mTouchMode == TOUCH_DRAG_MODE) { 4794 if (mHeldMotionless == MOTIONLESS_PENDING) { 4795 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4796 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4797 mHeldMotionless = MOTIONLESS_FALSE; 4798 } 4799 if (mHeldMotionless == MOTIONLESS_FALSE) { 4800 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4801 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4802 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4803 .obtainMessage(AWAKEN_SCROLL_BARS), 4804 ViewConfiguration.getScrollDefaultDelay()); 4805 mHeldMotionless = MOTIONLESS_PENDING; 4806 } 4807 } 4808 int saveCount = canvas.save(); 4809 if (animateZoom) { 4810 mZoomManager.animateZoom(canvas); 4811 } else if (!canvas.isHardwareAccelerated()) { 4812 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4813 } 4814 4815 boolean UIAnimationsRunning = false; 4816 // Currently for each draw we compute the animation values; 4817 // We may in the future decide to do that independently. 4818 if (mNativeClass != 0 && !canvas.isHardwareAccelerated() 4819 && nativeEvaluateLayersAnimations(mNativeClass)) { 4820 UIAnimationsRunning = true; 4821 // If we have unfinished (or unstarted) animations, 4822 // we ask for a repaint. We only need to do this in software 4823 // rendering (with hardware rendering we already have a different 4824 // method of requesting a repaint) 4825 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 4826 invalidate(); 4827 } 4828 4829 // decide which adornments to draw 4830 int extras = DRAW_EXTRAS_NONE; 4831 if (mFindIsUp) { 4832 extras = DRAW_EXTRAS_FIND; 4833 } else if (mSelectingText && (!USE_JAVA_TEXT_SELECTION || DEBUG_TEXT_HANDLES)) { 4834 extras = DRAW_EXTRAS_SELECTION; 4835 nativeSetSelectionPointer(mNativeClass, 4836 mDrawSelectionPointer, 4837 mZoomManager.getInvScale(), mSelectX, mSelectY - getTitleHeight()); 4838 } else if (drawCursorRing) { 4839 extras = DRAW_EXTRAS_CURSOR_RING; 4840 } 4841 if (DebugFlags.WEB_VIEW) { 4842 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4843 + " mSelectingText=" + mSelectingText 4844 + " nativePageShouldHandleShiftAndArrows()=" 4845 + nativePageShouldHandleShiftAndArrows() 4846 + " animateZoom=" + animateZoom 4847 + " extras=" + extras); 4848 } 4849 4850 calcOurContentVisibleRectF(mVisibleContentRect); 4851 if (canvas.isHardwareAccelerated()) { 4852 Rect glRectViewport = mGLViewportEmpty ? null : mGLRectViewport; 4853 Rect viewRectViewport = mGLViewportEmpty ? null : mViewRectViewport; 4854 4855 int functor = nativeGetDrawGLFunction(mNativeClass, glRectViewport, 4856 viewRectViewport, mVisibleContentRect, getScale(), extras); 4857 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4858 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 4859 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 4860 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 4861 } 4862 4863 } else { 4864 DrawFilter df = null; 4865 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4866 df = mZoomFilter; 4867 } else if (animateScroll) { 4868 df = mScrollFilter; 4869 } 4870 canvas.setDrawFilter(df); 4871 // XXX: Revisit splitting content. Right now it causes a 4872 // synchronization problem with layers. 4873 int content = nativeDraw(canvas, mVisibleContentRect, color, 4874 extras, false); 4875 canvas.setDrawFilter(null); 4876 if (!mBlockWebkitViewMessages && content != 0) { 4877 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4878 } 4879 } 4880 4881 canvas.restoreToCount(saveCount); 4882 if (mSelectingText && USE_JAVA_TEXT_SELECTION) { 4883 drawTextSelectionHandles(canvas); 4884 } 4885 4886 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4887 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4888 mTouchMode = TOUCH_SHORTPRESS_MODE; 4889 } 4890 } 4891 if (mFocusSizeChanged) { 4892 mFocusSizeChanged = false; 4893 // If we are zooming, this will get handled above, when the zoom 4894 // finishes. We also do not need to do this unless the WebTextView 4895 // is showing. With hardware acceleration, the pageSwapCallback() 4896 // updates the WebTextView position in sync with page swapping 4897 if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) { 4898 didUpdateWebTextViewDimensions(ANYWHERE); 4899 } 4900 } 4901 } 4902 4903 private void drawTextSelectionHandles(Canvas canvas) { 4904 if (mTextSelectionPaint == null) { 4905 mTextSelectionPaint = new Paint(); 4906 mTextSelectionPaint.setColor(HIGHLIGHT_COLOR); 4907 } 4908 mTextSelectionRegion.setEmpty(); 4909 nativeGetTextSelectionRegion(mNativeClass, mTextSelectionRegion); 4910 Rect r = new Rect(); 4911 RegionIterator iter = new RegionIterator(mTextSelectionRegion); 4912 Rect clip = canvas.getClipBounds(); 4913 while (iter.next(r)) { 4914 r.set(contentToViewDimension(r.left), 4915 contentToViewDimension(r.top), 4916 contentToViewDimension(r.right), 4917 contentToViewDimension(r.bottom)); 4918 if (r.intersect(clip)) { 4919 canvas.drawRect(r, mTextSelectionPaint); 4920 } 4921 } 4922 if (mSelectHandleLeft == null) { 4923 mSelectHandleLeft = mContext.getResources().getDrawable( 4924 com.android.internal.R.drawable.text_select_handle_left); 4925 } 4926 int[] handles = new int[4]; 4927 nativeGetSelectionHandles(mNativeClass, handles); 4928 int start_x = contentToViewDimension(handles[0]); 4929 int start_y = contentToViewDimension(handles[1]); 4930 int end_x = contentToViewDimension(handles[2]); 4931 int end_y = contentToViewDimension(handles[3]); 4932 // Magic formula copied from TextView 4933 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 4934 mSelectHandleLeft.setBounds(start_x, start_y, 4935 start_x + mSelectHandleLeft.getIntrinsicWidth(), 4936 start_y + mSelectHandleLeft.getIntrinsicHeight()); 4937 if (mSelectHandleRight == null) { 4938 mSelectHandleRight = mContext.getResources().getDrawable( 4939 com.android.internal.R.drawable.text_select_handle_right); 4940 } 4941 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 4942 mSelectHandleRight.setBounds(end_x, end_y, 4943 end_x + mSelectHandleRight.getIntrinsicWidth(), 4944 end_y + mSelectHandleRight.getIntrinsicHeight()); 4945 if (DEBUG_TEXT_HANDLES) { 4946 mSelectHandleLeft.setAlpha(125); 4947 mSelectHandleRight.setAlpha(125); 4948 } 4949 mSelectHandleLeft.draw(canvas); 4950 mSelectHandleRight.draw(canvas); 4951 } 4952 4953 // draw history 4954 private boolean mDrawHistory = false; 4955 private Picture mHistoryPicture = null; 4956 private int mHistoryWidth = 0; 4957 private int mHistoryHeight = 0; 4958 4959 // Only check the flag, can be called from WebCore thread 4960 boolean drawHistory() { 4961 return mDrawHistory; 4962 } 4963 4964 int getHistoryPictureWidth() { 4965 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4966 } 4967 4968 // Should only be called in UI thread 4969 void switchOutDrawHistory() { 4970 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4971 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4972 mDrawHistory = false; 4973 mHistoryPicture = null; 4974 invalidate(); 4975 int oldScrollX = mScrollX; 4976 int oldScrollY = mScrollY; 4977 mScrollX = pinLocX(mScrollX); 4978 mScrollY = pinLocY(mScrollY); 4979 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4980 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4981 } else { 4982 sendOurVisibleRect(); 4983 } 4984 } 4985 } 4986 4987 WebViewCore.CursorData cursorData() { 4988 WebViewCore.CursorData result = cursorDataNoPosition(); 4989 Point position = nativeCursorPosition(); 4990 result.mX = position.x; 4991 result.mY = position.y; 4992 return result; 4993 } 4994 4995 WebViewCore.CursorData cursorDataNoPosition() { 4996 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4997 result.mMoveGeneration = nativeMoveGeneration(); 4998 result.mFrame = nativeCursorFramePointer(); 4999 return result; 5000 } 5001 5002 /** 5003 * Delete text from start to end in the focused textfield. If there is no 5004 * focus, or if start == end, silently fail. If start and end are out of 5005 * order, swap them. 5006 * @param start Beginning of selection to delete. 5007 * @param end End of selection to delete. 5008 */ 5009 /* package */ void deleteSelection(int start, int end) { 5010 mTextGeneration++; 5011 WebViewCore.TextSelectionData data 5012 = new WebViewCore.TextSelectionData(start, end); 5013 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 5014 data); 5015 } 5016 5017 /** 5018 * Set the selection to (start, end) in the focused textfield. If start and 5019 * end are out of order, swap them. 5020 * @param start Beginning of selection. 5021 * @param end End of selection. 5022 */ 5023 /* package */ void setSelection(int start, int end) { 5024 if (mWebViewCore != null) { 5025 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 5026 } 5027 } 5028 5029 @Override 5030 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 5031 outAttrs.inputType = EditorInfo.IME_FLAG_NO_FULLSCREEN 5032 | EditorInfo.TYPE_CLASS_TEXT 5033 | EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT 5034 | EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE 5035 | EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT 5036 | EditorInfo.TYPE_TEXT_FLAG_CAP_SENTENCES; 5037 outAttrs.imeOptions = EditorInfo.IME_ACTION_NONE; 5038 5039 if (mInputConnection == null) { 5040 mInputConnection = new WebViewInputConnection(); 5041 } 5042 outAttrs.initialCapsMode = mInputConnection.getCursorCapsMode(InputType.TYPE_CLASS_TEXT); 5043 return mInputConnection; 5044 } 5045 5046 /** 5047 * Called in response to a message from webkit telling us that the soft 5048 * keyboard should be launched. 5049 */ 5050 private void displaySoftKeyboard(boolean isTextView) { 5051 InputMethodManager imm = (InputMethodManager) 5052 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 5053 5054 // bring it back to the default level scale so that user can enter text 5055 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 5056 if (zoom) { 5057 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 5058 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 5059 } 5060 if (isTextView) { 5061 rebuildWebTextView(); 5062 if (inEditingMode()) { 5063 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 5064 if (zoom) { 5065 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 5066 } 5067 return; 5068 } 5069 } 5070 // Used by plugins and contentEditable. 5071 // Also used if the navigation cache is out of date, and 5072 // does not recognize that a textfield is in focus. In that 5073 // case, use WebView as the targeted view. 5074 // see http://b/issue?id=2457459 5075 imm.showSoftInput(this, 0); 5076 } 5077 5078 // Called by WebKit to instruct the UI to hide the keyboard 5079 private void hideSoftKeyboard() { 5080 InputMethodManager imm = InputMethodManager.peekInstance(); 5081 if (imm != null && (imm.isActive(this) 5082 || (inEditingMode() && imm.isActive(mWebTextView)))) { 5083 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 5084 } 5085 } 5086 5087 /* 5088 * This method checks the current focus and cursor and potentially rebuilds 5089 * mWebTextView to have the appropriate properties, such as password, 5090 * multiline, and what text it contains. It also removes it if necessary. 5091 */ 5092 /* package */ void rebuildWebTextView() { 5093 // If the WebView does not have focus, do nothing until it gains focus. 5094 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 5095 return; 5096 } 5097 boolean alreadyThere = inEditingMode(); 5098 // inEditingMode can only return true if mWebTextView is non-null, 5099 // so we can safely call remove() if (alreadyThere) 5100 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 5101 if (alreadyThere) { 5102 mWebTextView.remove(); 5103 } 5104 return; 5105 } 5106 // At this point, we know we have found an input field, so go ahead 5107 // and create the WebTextView if necessary. 5108 if (mWebTextView == null) { 5109 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 5110 // Initialize our generation number. 5111 mTextGeneration = 0; 5112 } 5113 mWebTextView.updateTextSize(); 5114 updateWebTextViewPosition(); 5115 String text = nativeFocusCandidateText(); 5116 int nodePointer = nativeFocusCandidatePointer(); 5117 // This needs to be called before setType, which may call 5118 // requestFormData, and it needs to have the correct nodePointer. 5119 mWebTextView.setNodePointer(nodePointer); 5120 mWebTextView.setType(nativeFocusCandidateType()); 5121 // Gravity needs to be set after setType 5122 mWebTextView.setGravityForRtl(nativeFocusCandidateIsRtlText()); 5123 if (null == text) { 5124 if (DebugFlags.WEB_VIEW) { 5125 Log.v(LOGTAG, "rebuildWebTextView null == text"); 5126 } 5127 text = ""; 5128 } 5129 mWebTextView.setTextAndKeepSelection(text); 5130 InputMethodManager imm = InputMethodManager.peekInstance(); 5131 if (imm != null && imm.isActive(mWebTextView)) { 5132 imm.restartInput(mWebTextView); 5133 mWebTextView.clearComposingText(); 5134 } 5135 if (isFocused()) { 5136 mWebTextView.requestFocus(); 5137 } 5138 } 5139 5140 private void updateWebTextViewPosition() { 5141 Rect visibleRect = new Rect(); 5142 calcOurContentVisibleRect(visibleRect); 5143 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 5144 // should be in content coordinates. 5145 Rect bounds = nativeFocusCandidateNodeBounds(); 5146 Rect vBox = contentToViewRect(bounds); 5147 offsetByLayerScrollPosition(vBox); 5148 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 5149 if (!Rect.intersects(bounds, visibleRect)) { 5150 revealSelection(); 5151 } 5152 updateWebTextViewPadding(); 5153 } 5154 5155 /** 5156 * Update the padding of mWebTextView based on the native textfield/textarea 5157 */ 5158 void updateWebTextViewPadding() { 5159 Rect paddingRect = nativeFocusCandidatePaddingRect(); 5160 if (paddingRect != null) { 5161 // Use contentToViewDimension since these are the dimensions of 5162 // the padding. 5163 mWebTextView.setPadding( 5164 contentToViewDimension(paddingRect.left), 5165 contentToViewDimension(paddingRect.top), 5166 contentToViewDimension(paddingRect.right), 5167 contentToViewDimension(paddingRect.bottom)); 5168 } 5169 } 5170 5171 /** 5172 * Tell webkit to put the cursor on screen. 5173 */ 5174 /* package */ void revealSelection() { 5175 if (mWebViewCore != null) { 5176 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 5177 } 5178 } 5179 5180 /** 5181 * Called by WebTextView to find saved form data associated with the 5182 * textfield 5183 * @param name Name of the textfield. 5184 * @param nodePointer Pointer to the node of the textfield, so it can be 5185 * compared to the currently focused textfield when the data is 5186 * retrieved. 5187 * @param autoFillable true if WebKit has determined this field is part of 5188 * a form that can be auto filled. 5189 * @param autoComplete true if the attribute "autocomplete" is set to true 5190 * on the textfield. 5191 */ 5192 /* package */ void requestFormData(String name, int nodePointer, 5193 boolean autoFillable, boolean autoComplete) { 5194 if (mWebViewCore.getSettings().getSaveFormData()) { 5195 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 5196 update.arg1 = nodePointer; 5197 RequestFormData updater = new RequestFormData(name, getUrl(), 5198 update, autoFillable, autoComplete); 5199 Thread t = new Thread(updater); 5200 t.start(); 5201 } 5202 } 5203 5204 /** 5205 * Pass a message to find out the <label> associated with the <input> 5206 * identified by nodePointer 5207 * @param framePointer Pointer to the frame containing the <input> node 5208 * @param nodePointer Pointer to the node for which a <label> is desired. 5209 */ 5210 /* package */ void requestLabel(int framePointer, int nodePointer) { 5211 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 5212 nodePointer); 5213 } 5214 5215 /* 5216 * This class requests an Adapter for the WebTextView which shows past 5217 * entries stored in the database. It is a Runnable so that it can be done 5218 * in its own thread, without slowing down the UI. 5219 */ 5220 private class RequestFormData implements Runnable { 5221 private String mName; 5222 private String mUrl; 5223 private Message mUpdateMessage; 5224 private boolean mAutoFillable; 5225 private boolean mAutoComplete; 5226 private WebSettings mWebSettings; 5227 5228 public RequestFormData(String name, String url, Message msg, 5229 boolean autoFillable, boolean autoComplete) { 5230 mName = name; 5231 mUrl = WebTextView.urlForAutoCompleteData(url); 5232 mUpdateMessage = msg; 5233 mAutoFillable = autoFillable; 5234 mAutoComplete = autoComplete; 5235 mWebSettings = getSettings(); 5236 } 5237 5238 @Override 5239 public void run() { 5240 ArrayList<String> pastEntries = new ArrayList<String>(); 5241 5242 if (mAutoFillable) { 5243 // Note that code inside the adapter click handler in WebTextView depends 5244 // on the AutoFill item being at the top of the drop down list. If you change 5245 // the order, make sure to do it there too! 5246 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 5247 pastEntries.add(getResources().getText( 5248 com.android.internal.R.string.autofill_this_form).toString() + 5249 " " + 5250 mAutoFillData.getPreviewString()); 5251 mWebTextView.setAutoFillProfileIsSet(true); 5252 } else { 5253 // There is no autofill profile set up yet, so add an option that 5254 // will invite the user to set their profile up. 5255 pastEntries.add(getResources().getText( 5256 com.android.internal.R.string.setup_autofill).toString()); 5257 mWebTextView.setAutoFillProfileIsSet(false); 5258 } 5259 } 5260 5261 if (mAutoComplete) { 5262 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 5263 } 5264 5265 if (pastEntries.size() > 0) { 5266 AutoCompleteAdapter adapter = new 5267 AutoCompleteAdapter(mContext, pastEntries); 5268 mUpdateMessage.obj = adapter; 5269 mUpdateMessage.sendToTarget(); 5270 } 5271 } 5272 } 5273 5274 /** 5275 * Dump the display tree to "/sdcard/displayTree.txt" 5276 * 5277 * @hide debug only 5278 */ 5279 public void dumpDisplayTree() { 5280 nativeDumpDisplayTree(getUrl()); 5281 } 5282 5283 /** 5284 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 5285 * "/sdcard/domTree.txt" 5286 * 5287 * @hide debug only 5288 */ 5289 public void dumpDomTree(boolean toFile) { 5290 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 5291 } 5292 5293 /** 5294 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 5295 * to "/sdcard/renderTree.txt" 5296 * 5297 * @hide debug only 5298 */ 5299 public void dumpRenderTree(boolean toFile) { 5300 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 5301 } 5302 5303 /** 5304 * Called by DRT on UI thread, need to proxy to WebCore thread. 5305 * 5306 * @hide debug only 5307 */ 5308 public void useMockDeviceOrientation() { 5309 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 5310 } 5311 5312 /** 5313 * Called by DRT on WebCore thread. 5314 * 5315 * @hide debug only 5316 */ 5317 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 5318 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 5319 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 5320 canProvideGamma, gamma); 5321 } 5322 5323 // This is used to determine long press with the center key. Does not 5324 // affect long press with the trackball/touch. 5325 private boolean mGotCenterDown = false; 5326 5327 @Override 5328 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 5329 if (mBlockWebkitViewMessages) { 5330 return false; 5331 } 5332 // send complex characters to webkit for use by JS and plugins 5333 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 5334 // pass the key to DOM 5335 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5336 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5337 // return true as DOM handles the key 5338 return true; 5339 } 5340 return false; 5341 } 5342 5343 private boolean isEnterActionKey(int keyCode) { 5344 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 5345 || keyCode == KeyEvent.KEYCODE_ENTER 5346 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 5347 } 5348 5349 @Override 5350 public boolean onKeyDown(int keyCode, KeyEvent event) { 5351 if (DebugFlags.WEB_VIEW) { 5352 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 5353 + "keyCode=" + keyCode 5354 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5355 } 5356 if (mBlockWebkitViewMessages) { 5357 return false; 5358 } 5359 5360 // don't implement accelerator keys here; defer to host application 5361 if (event.isCtrlPressed()) { 5362 return false; 5363 } 5364 5365 if (mNativeClass == 0) { 5366 return false; 5367 } 5368 5369 // do this hack up front, so it always works, regardless of touch-mode 5370 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 5371 mAutoRedraw = !mAutoRedraw; 5372 if (mAutoRedraw) { 5373 invalidate(); 5374 } 5375 return true; 5376 } 5377 5378 // Bubble up the key event if 5379 // 1. it is a system key; or 5380 // 2. the host application wants to handle it; 5381 if (event.isSystem() 5382 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5383 return false; 5384 } 5385 5386 // accessibility support 5387 if (accessibilityScriptInjected()) { 5388 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5389 // if an accessibility script is injected we delegate to it the key handling. 5390 // this script is a screen reader which is a fully fledged solution for blind 5391 // users to navigate in and interact with web pages. 5392 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5393 return true; 5394 } else { 5395 // Clean up if accessibility was disabled after loading the current URL. 5396 mAccessibilityScriptInjected = false; 5397 } 5398 } else if (mAccessibilityInjector != null) { 5399 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5400 if (mAccessibilityInjector.onKeyEvent(event)) { 5401 // if an accessibility injector is present (no JavaScript enabled or the site 5402 // opts out injecting our JavaScript screen reader) we let it decide whether 5403 // to act on and consume the event. 5404 return true; 5405 } 5406 } else { 5407 // Clean up if accessibility was disabled after loading the current URL. 5408 mAccessibilityInjector = null; 5409 } 5410 } 5411 5412 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 5413 if (event.hasNoModifiers()) { 5414 pageUp(false); 5415 return true; 5416 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5417 pageUp(true); 5418 return true; 5419 } 5420 } 5421 5422 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 5423 if (event.hasNoModifiers()) { 5424 pageDown(false); 5425 return true; 5426 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5427 pageDown(true); 5428 return true; 5429 } 5430 } 5431 5432 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 5433 pageUp(true); 5434 return true; 5435 } 5436 5437 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 5438 pageDown(true); 5439 return true; 5440 } 5441 5442 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5443 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5444 switchOutDrawHistory(); 5445 if (nativePageShouldHandleShiftAndArrows()) { 5446 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 5447 return true; 5448 } 5449 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5450 switch (keyCode) { 5451 case KeyEvent.KEYCODE_DPAD_UP: 5452 pageUp(true); 5453 return true; 5454 case KeyEvent.KEYCODE_DPAD_DOWN: 5455 pageDown(true); 5456 return true; 5457 case KeyEvent.KEYCODE_DPAD_LEFT: 5458 nativeClearCursor(); // start next trackball movement from page edge 5459 return pinScrollTo(0, mScrollY, true, 0); 5460 case KeyEvent.KEYCODE_DPAD_RIGHT: 5461 nativeClearCursor(); // start next trackball movement from page edge 5462 return pinScrollTo(mContentWidth, mScrollY, true, 0); 5463 } 5464 } 5465 if (mSelectingText) { 5466 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 5467 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 5468 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 5469 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 5470 int multiplier = event.getRepeatCount() + 1; 5471 moveSelection(xRate * multiplier, yRate * multiplier); 5472 return true; 5473 } 5474 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 5475 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 5476 return true; 5477 } 5478 // Bubble up the key event as WebView doesn't handle it 5479 return false; 5480 } 5481 5482 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 5483 switchOutDrawHistory(); 5484 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 5485 || nativeCursorWantsKeyEvents(); 5486 if (event.getRepeatCount() == 0) { 5487 if (mSelectingText) { 5488 return true; // discard press if copy in progress 5489 } 5490 mGotCenterDown = true; 5491 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5492 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 5493 if (!wantsKeyEvents) return true; 5494 } 5495 // Bubble up the key event as WebView doesn't handle it 5496 if (!wantsKeyEvents) return false; 5497 } 5498 5499 if (getSettings().getNavDump()) { 5500 switch (keyCode) { 5501 case KeyEvent.KEYCODE_4: 5502 dumpDisplayTree(); 5503 break; 5504 case KeyEvent.KEYCODE_5: 5505 case KeyEvent.KEYCODE_6: 5506 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5507 break; 5508 case KeyEvent.KEYCODE_7: 5509 case KeyEvent.KEYCODE_8: 5510 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5511 break; 5512 } 5513 } 5514 5515 if (nativeCursorIsTextInput()) { 5516 // This message will put the node in focus, for the DOM's notion 5517 // of focus. 5518 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5519 nativeCursorNodePointer()); 5520 // This will bring up the WebTextView and put it in focus, for 5521 // our view system's notion of focus 5522 rebuildWebTextView(); 5523 // Now we need to pass the event to it 5524 if (inEditingMode()) { 5525 mWebTextView.setDefaultSelection(); 5526 return mWebTextView.dispatchKeyEvent(event); 5527 } 5528 } else if (nativeHasFocusNode()) { 5529 // In this case, the cursor is not on a text input, but the focus 5530 // might be. Check it, and if so, hand over to the WebTextView. 5531 rebuildWebTextView(); 5532 if (inEditingMode()) { 5533 mWebTextView.setDefaultSelection(); 5534 return mWebTextView.dispatchKeyEvent(event); 5535 } 5536 } 5537 5538 // TODO: should we pass all the keys to DOM or check the meta tag 5539 if (nativeCursorWantsKeyEvents() || true) { 5540 // pass the key to DOM 5541 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5542 // return true as DOM handles the key 5543 return true; 5544 } 5545 5546 // Bubble up the key event as WebView doesn't handle it 5547 return false; 5548 } 5549 5550 @Override 5551 public boolean onKeyUp(int keyCode, KeyEvent event) { 5552 if (DebugFlags.WEB_VIEW) { 5553 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5554 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5555 } 5556 if (mBlockWebkitViewMessages) { 5557 return false; 5558 } 5559 5560 if (mNativeClass == 0) { 5561 return false; 5562 } 5563 5564 // special CALL handling when cursor node's href is "tel:XXX" 5565 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5566 String text = nativeCursorText(); 5567 if (!nativeCursorIsTextInput() && text != null 5568 && text.startsWith(SCHEME_TEL)) { 5569 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5570 getContext().startActivity(intent); 5571 return true; 5572 } 5573 } 5574 5575 // Bubble up the key event if 5576 // 1. it is a system key; or 5577 // 2. the host application wants to handle it; 5578 if (event.isSystem() 5579 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5580 return false; 5581 } 5582 5583 // accessibility support 5584 if (accessibilityScriptInjected()) { 5585 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5586 // if an accessibility script is injected we delegate to it the key handling. 5587 // this script is a screen reader which is a fully fledged solution for blind 5588 // users to navigate in and interact with web pages. 5589 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5590 return true; 5591 } else { 5592 // Clean up if accessibility was disabled after loading the current URL. 5593 mAccessibilityScriptInjected = false; 5594 } 5595 } else if (mAccessibilityInjector != null) { 5596 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5597 if (mAccessibilityInjector.onKeyEvent(event)) { 5598 // if an accessibility injector is present (no JavaScript enabled or the site 5599 // opts out injecting our JavaScript screen reader) we let it decide whether to 5600 // act on and consume the event. 5601 return true; 5602 } 5603 } else { 5604 // Clean up if accessibility was disabled after loading the current URL. 5605 mAccessibilityInjector = null; 5606 } 5607 } 5608 5609 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5610 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5611 if (nativePageShouldHandleShiftAndArrows()) { 5612 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5613 return true; 5614 } 5615 // always handle the navigation keys in the UI thread 5616 // Bubble up the key event as WebView doesn't handle it 5617 return false; 5618 } 5619 5620 if (isEnterActionKey(keyCode)) { 5621 // remove the long press message first 5622 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5623 mGotCenterDown = false; 5624 5625 if (mSelectingText) { 5626 if (mExtendSelection) { 5627 copySelection(); 5628 selectionDone(); 5629 } else { 5630 mExtendSelection = true; 5631 nativeSetExtendSelection(); 5632 invalidate(); // draw the i-beam instead of the arrow 5633 } 5634 return true; // discard press if copy in progress 5635 } 5636 5637 // perform the single click 5638 Rect visibleRect = sendOurVisibleRect(); 5639 // Note that sendOurVisibleRect calls viewToContent, so the 5640 // coordinates should be in content coordinates. 5641 if (!nativeCursorIntersects(visibleRect)) { 5642 return false; 5643 } 5644 WebViewCore.CursorData data = cursorData(); 5645 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5646 playSoundEffect(SoundEffectConstants.CLICK); 5647 if (nativeCursorIsTextInput()) { 5648 rebuildWebTextView(); 5649 centerKeyPressOnTextField(); 5650 if (inEditingMode()) { 5651 mWebTextView.setDefaultSelection(); 5652 } 5653 return true; 5654 } 5655 clearTextEntry(); 5656 nativeShowCursorTimed(); 5657 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5658 return true; 5659 } 5660 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5661 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5662 nativeCursorNodePointer()); 5663 return true; 5664 } 5665 } 5666 5667 // TODO: should we pass all the keys to DOM or check the meta tag 5668 if (nativeCursorWantsKeyEvents() || true) { 5669 // pass the key to DOM 5670 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5671 // return true as DOM handles the key 5672 return true; 5673 } 5674 5675 // Bubble up the key event as WebView doesn't handle it 5676 return false; 5677 } 5678 5679 /* 5680 * Enter selecting text mode, and see if CAB should be shown. 5681 * Returns true if the WebView is now in 5682 * selecting text mode (including if it was already in that mode, and this 5683 * method did nothing). 5684 */ 5685 private boolean setUpSelect(boolean selectWord, int x, int y) { 5686 if (0 == mNativeClass) return false; // client isn't initialized 5687 if (inFullScreenMode()) return false; 5688 if (mSelectingText) return true; 5689 nativeResetSelection(); 5690 if (selectWord && !nativeWordSelection(x, y)) { 5691 selectionDone(); 5692 return false; 5693 } 5694 mSelectCallback = new SelectActionModeCallback(); 5695 mSelectCallback.setWebView(this); 5696 if (startActionMode(mSelectCallback) == null) { 5697 // There is no ActionMode, so do not allow the user to modify a 5698 // selection. 5699 selectionDone(); 5700 return false; 5701 } 5702 mExtendSelection = false; 5703 mSelectingText = mDrawSelectionPointer = true; 5704 if (DEBUG_TEXT_HANDLES) { 5705 // Debugging text handles requires running in software mode 5706 setLayerType(LAYER_TYPE_SOFTWARE, null); 5707 } 5708 // don't let the picture change during text selection 5709 WebViewCore.pauseUpdatePicture(mWebViewCore); 5710 if (nativeHasCursorNode()) { 5711 Rect rect = nativeCursorNodeBounds(); 5712 mSelectX = contentToViewX(rect.left); 5713 mSelectY = contentToViewY(rect.top); 5714 } else if (mLastTouchY > getVisibleTitleHeightImpl()) { 5715 mSelectX = mScrollX + mLastTouchX; 5716 mSelectY = mScrollY + mLastTouchY; 5717 } else { 5718 mSelectX = mScrollX + getViewWidth() / 2; 5719 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 5720 } 5721 nativeHideCursor(); 5722 mMinAutoScrollX = 0; 5723 mMaxAutoScrollX = getViewWidth(); 5724 mMinAutoScrollY = 0; 5725 mMaxAutoScrollY = getViewHeightWithTitle(); 5726 mCurrentScrollingLayerId = nativeScrollableLayer(viewToContentX(mSelectX), 5727 viewToContentY(mSelectY), mScrollingLayerRect, 5728 mScrollingLayerBounds); 5729 if (mCurrentScrollingLayerId != 0) { 5730 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 5731 mMinAutoScrollX = Math.max(mMinAutoScrollX, 5732 contentToViewX(mScrollingLayerBounds.left)); 5733 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 5734 contentToViewX(mScrollingLayerBounds.right)); 5735 } 5736 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 5737 mMinAutoScrollY = Math.max(mMinAutoScrollY, 5738 contentToViewY(mScrollingLayerBounds.top)); 5739 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 5740 contentToViewY(mScrollingLayerBounds.bottom)); 5741 } 5742 } 5743 mMinAutoScrollX += SELECT_SCROLL; 5744 mMaxAutoScrollX -= SELECT_SCROLL; 5745 mMinAutoScrollY += SELECT_SCROLL; 5746 mMaxAutoScrollY -= SELECT_SCROLL; 5747 return true; 5748 } 5749 5750 /** 5751 * Use this method to put the WebView into text selection mode. 5752 * Do not rely on this functionality; it will be deprecated in the future. 5753 * @deprecated This method is now obsolete. 5754 */ 5755 @Deprecated 5756 public void emulateShiftHeld() { 5757 checkThread(); 5758 setUpSelect(false, 0, 0); 5759 } 5760 5761 /** 5762 * Select all of the text in this WebView. 5763 * 5764 * @hide This is an implementation detail. 5765 */ 5766 public void selectAll() { 5767 if (0 == mNativeClass) return; // client isn't initialized 5768 if (inFullScreenMode()) return; 5769 if (!mSelectingText) { 5770 // retrieve a point somewhere within the text 5771 Point select = nativeSelectableText(); 5772 if (!selectText(select.x, select.y)) return; 5773 } 5774 nativeSelectAll(); 5775 mDrawSelectionPointer = false; 5776 mExtendSelection = true; 5777 invalidate(); 5778 } 5779 5780 /** 5781 * Called when the selection has been removed. 5782 */ 5783 void selectionDone() { 5784 if (mSelectingText) { 5785 mSelectingText = false; 5786 if (DEBUG_TEXT_HANDLES) { 5787 // Debugging text handles required running in software mode, set 5788 // back to default now 5789 setLayerType(LAYER_TYPE_NONE, null); 5790 } 5791 // finish is idempotent, so this is fine even if selectionDone was 5792 // called by mSelectCallback.onDestroyActionMode 5793 mSelectCallback.finish(); 5794 mSelectCallback = null; 5795 WebViewCore.resumePriority(); 5796 WebViewCore.resumeUpdatePicture(mWebViewCore); 5797 invalidate(); // redraw without selection 5798 mAutoScrollX = 0; 5799 mAutoScrollY = 0; 5800 mSentAutoScrollMessage = false; 5801 } 5802 } 5803 5804 /** 5805 * Copy the selection to the clipboard 5806 * 5807 * @hide This is an implementation detail. 5808 */ 5809 public boolean copySelection() { 5810 boolean copiedSomething = false; 5811 String selection = getSelection(); 5812 if (selection != null && selection != "") { 5813 if (DebugFlags.WEB_VIEW) { 5814 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5815 } 5816 Toast.makeText(mContext 5817 , com.android.internal.R.string.text_copied 5818 , Toast.LENGTH_SHORT).show(); 5819 copiedSomething = true; 5820 ClipboardManager cm = (ClipboardManager)getContext() 5821 .getSystemService(Context.CLIPBOARD_SERVICE); 5822 cm.setText(selection); 5823 int[] handles = new int[4]; 5824 nativeGetSelectionHandles(mNativeClass, handles); 5825 mWebViewCore.sendMessage(EventHub.COPY_TEXT, handles); 5826 } 5827 invalidate(); // remove selection region and pointer 5828 return copiedSomething; 5829 } 5830 5831 /** 5832 * Cut the selected text into the clipboard 5833 * 5834 * @hide This is an implementation detail 5835 */ 5836 public void cutSelection() { 5837 copySelection(); 5838 int[] handles = new int[4]; 5839 nativeGetSelectionHandles(mNativeClass, handles); 5840 mWebViewCore.sendMessage(EventHub.DELETE_TEXT, handles); 5841 } 5842 5843 /** 5844 * Paste text from the clipboard to the cursor position. 5845 * 5846 * @hide This is an implementation detail 5847 */ 5848 public void pasteFromClipboard() { 5849 ClipboardManager cm = (ClipboardManager)getContext() 5850 .getSystemService(Context.CLIPBOARD_SERVICE); 5851 ClipData clipData = cm.getPrimaryClip(); 5852 if (clipData != null) { 5853 ClipData.Item clipItem = clipData.getItemAt(0); 5854 CharSequence pasteText = clipItem.getText(); 5855 if (pasteText != null) { 5856 int[] handles = new int[4]; 5857 nativeGetSelectionHandles(mNativeClass, handles); 5858 mWebViewCore.sendMessage(EventHub.DELETE_TEXT, handles); 5859 mWebViewCore.sendMessage(EventHub.INSERT_TEXT, 5860 pasteText.toString()); 5861 } 5862 } 5863 } 5864 5865 /** 5866 * @hide This is an implementation detail. 5867 */ 5868 public SearchBox getSearchBox() { 5869 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5870 return null; 5871 } 5872 return mWebViewCore.getBrowserFrame().getSearchBox(); 5873 } 5874 5875 /** 5876 * Returns the currently highlighted text as a string. 5877 */ 5878 String getSelection() { 5879 if (mNativeClass == 0) return ""; 5880 return nativeGetSelection(); 5881 } 5882 5883 @Override 5884 protected void onAttachedToWindow() { 5885 super.onAttachedToWindow(); 5886 if (hasWindowFocus()) setActive(true); 5887 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5888 if (mGlobalLayoutListener == null) { 5889 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5890 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5891 } 5892 if (mScrollChangedListener == null) { 5893 mScrollChangedListener = new InnerScrollChangedListener(); 5894 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5895 } 5896 5897 addAccessibilityApisToJavaScript(); 5898 5899 mTouchEventQueue.reset(); 5900 } 5901 5902 @Override 5903 protected void onDetachedFromWindow() { 5904 clearHelpers(); 5905 mZoomManager.dismissZoomPicker(); 5906 if (hasWindowFocus()) setActive(false); 5907 5908 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5909 if (mGlobalLayoutListener != null) { 5910 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5911 mGlobalLayoutListener = null; 5912 } 5913 if (mScrollChangedListener != null) { 5914 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5915 mScrollChangedListener = null; 5916 } 5917 5918 removeAccessibilityApisFromJavaScript(); 5919 5920 super.onDetachedFromWindow(); 5921 } 5922 5923 @Override 5924 protected void onVisibilityChanged(View changedView, int visibility) { 5925 super.onVisibilityChanged(changedView, visibility); 5926 // The zoomManager may be null if the webview is created from XML that 5927 // specifies the view's visibility param as not visible (see http://b/2794841) 5928 if (visibility != View.VISIBLE && mZoomManager != null) { 5929 mZoomManager.dismissZoomPicker(); 5930 } 5931 updateDrawingState(); 5932 } 5933 5934 /** 5935 * @deprecated WebView no longer needs to implement 5936 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5937 */ 5938 @Override 5939 // Cannot add @hide as this can always be accessed via the interface. 5940 @Deprecated 5941 public void onChildViewAdded(View parent, View child) {} 5942 5943 /** 5944 * @deprecated WebView no longer needs to implement 5945 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5946 */ 5947 @Override 5948 // Cannot add @hide as this can always be accessed via the interface. 5949 @Deprecated 5950 public void onChildViewRemoved(View p, View child) {} 5951 5952 /** 5953 * @deprecated WebView should not have implemented 5954 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5955 */ 5956 @Override 5957 // Cannot add @hide as this can always be accessed via the interface. 5958 @Deprecated 5959 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5960 } 5961 5962 void setActive(boolean active) { 5963 if (active) { 5964 if (hasFocus()) { 5965 // If our window regained focus, and we have focus, then begin 5966 // drawing the cursor ring 5967 mDrawCursorRing = !inEditingMode(); 5968 setFocusControllerActive(true); 5969 } else { 5970 mDrawCursorRing = false; 5971 if (!inEditingMode()) { 5972 // If our window gained focus, but we do not have it, do not 5973 // draw the cursor ring. 5974 setFocusControllerActive(false); 5975 } 5976 // We do not call recordButtons here because we assume 5977 // that when we lost focus, or window focus, it got called with 5978 // false for the first parameter 5979 } 5980 } else { 5981 if (!mZoomManager.isZoomPickerVisible()) { 5982 /* 5983 * The external zoom controls come in their own window, so our 5984 * window loses focus. Our policy is to not draw the cursor ring 5985 * if our window is not focused, but this is an exception since 5986 * the user can still navigate the web page with the zoom 5987 * controls showing. 5988 */ 5989 mDrawCursorRing = false; 5990 } 5991 mKeysPressed.clear(); 5992 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5993 mTouchMode = TOUCH_DONE_MODE; 5994 setFocusControllerActive(false); 5995 } 5996 invalidate(); 5997 } 5998 5999 // To avoid drawing the cursor ring, and remove the TextView when our window 6000 // loses focus. 6001 @Override 6002 public void onWindowFocusChanged(boolean hasWindowFocus) { 6003 setActive(hasWindowFocus); 6004 if (hasWindowFocus) { 6005 JWebCoreJavaBridge.setActiveWebView(this); 6006 if (mPictureUpdatePausedForFocusChange) { 6007 WebViewCore.resumeUpdatePicture(mWebViewCore); 6008 mPictureUpdatePausedForFocusChange = false; 6009 } 6010 } else { 6011 JWebCoreJavaBridge.removeActiveWebView(this); 6012 final WebSettings settings = getSettings(); 6013 if (settings != null && settings.enableSmoothTransition() && 6014 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 6015 WebViewCore.pauseUpdatePicture(mWebViewCore); 6016 mPictureUpdatePausedForFocusChange = true; 6017 } 6018 } 6019 super.onWindowFocusChanged(hasWindowFocus); 6020 } 6021 6022 /* 6023 * Pass a message to WebCore Thread, telling the WebCore::Page's 6024 * FocusController to be "inactive" so that it will 6025 * not draw the blinking cursor. It gets set to "active" to draw the cursor 6026 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 6027 */ 6028 /* package */ void setFocusControllerActive(boolean active) { 6029 if (mWebViewCore == null) return; 6030 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 6031 // Need to send this message after the document regains focus. 6032 if (active && mListBoxMessage != null) { 6033 mWebViewCore.sendMessage(mListBoxMessage); 6034 mListBoxMessage = null; 6035 } 6036 } 6037 6038 @Override 6039 protected void onFocusChanged(boolean focused, int direction, 6040 Rect previouslyFocusedRect) { 6041 if (DebugFlags.WEB_VIEW) { 6042 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 6043 } 6044 if (focused) { 6045 // When we regain focus, if we have window focus, resume drawing 6046 // the cursor ring 6047 if (hasWindowFocus()) { 6048 mDrawCursorRing = !inEditingMode(); 6049 setFocusControllerActive(true); 6050 //} else { 6051 // The WebView has gained focus while we do not have 6052 // windowfocus. When our window lost focus, we should have 6053 // called recordButtons(false...) 6054 } 6055 } else { 6056 // When we lost focus, unless focus went to the TextView (which is 6057 // true if we are in editing mode), stop drawing the cursor ring. 6058 mDrawCursorRing = false; 6059 if (!inEditingMode()) { 6060 setFocusControllerActive(false); 6061 } 6062 mKeysPressed.clear(); 6063 } 6064 6065 super.onFocusChanged(focused, direction, previouslyFocusedRect); 6066 } 6067 6068 void setGLRectViewport() { 6069 // Use the getGlobalVisibleRect() to get the intersection among the parents 6070 // visible == false means we're clipped - send a null rect down to indicate that 6071 // we should not draw 6072 boolean visible = getGlobalVisibleRect(mGLRectViewport); 6073 if (visible) { 6074 // Then need to invert the Y axis, just for GL 6075 View rootView = getRootView(); 6076 int rootViewHeight = rootView.getHeight(); 6077 mViewRectViewport.set(mGLRectViewport); 6078 int savedWebViewBottom = mGLRectViewport.bottom; 6079 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 6080 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 6081 mGLViewportEmpty = false; 6082 } else { 6083 mGLViewportEmpty = true; 6084 } 6085 calcOurContentVisibleRectF(mVisibleContentRect); 6086 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 6087 mGLViewportEmpty ? null : mViewRectViewport, 6088 mVisibleContentRect); 6089 } 6090 6091 /** 6092 * @hide 6093 */ 6094 @Override 6095 protected boolean setFrame(int left, int top, int right, int bottom) { 6096 boolean changed = super.setFrame(left, top, right, bottom); 6097 if (!changed && mHeightCanMeasure) { 6098 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 6099 // in WebViewCore after we get the first layout. We do call 6100 // requestLayout() when we get contentSizeChanged(). But the View 6101 // system won't call onSizeChanged if the dimension is not changed. 6102 // In this case, we need to call sendViewSizeZoom() explicitly to 6103 // notify the WebKit about the new dimensions. 6104 sendViewSizeZoom(false); 6105 } 6106 setGLRectViewport(); 6107 return changed; 6108 } 6109 6110 @Override 6111 protected void onSizeChanged(int w, int h, int ow, int oh) { 6112 super.onSizeChanged(w, h, ow, oh); 6113 6114 // adjust the max viewport width depending on the view dimensions. This 6115 // is to ensure the scaling is not going insane. So do not shrink it if 6116 // the view size is temporarily smaller, e.g. when soft keyboard is up. 6117 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 6118 if (newMaxViewportWidth > sMaxViewportWidth) { 6119 sMaxViewportWidth = newMaxViewportWidth; 6120 } 6121 6122 mZoomManager.onSizeChanged(w, h, ow, oh); 6123 6124 if (mLoadedPicture != null && mDelaySetPicture == null) { 6125 // Size changes normally result in a new picture 6126 // Re-set the loaded picture to simulate that 6127 // However, do not update the base layer as that hasn't changed 6128 setNewPicture(mLoadedPicture, false); 6129 } 6130 } 6131 6132 @Override 6133 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 6134 super.onScrollChanged(l, t, oldl, oldt); 6135 if (!mInOverScrollMode) { 6136 sendOurVisibleRect(); 6137 // update WebKit if visible title bar height changed. The logic is same 6138 // as getVisibleTitleHeightImpl. 6139 int titleHeight = getTitleHeight(); 6140 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 6141 sendViewSizeZoom(false); 6142 } 6143 } 6144 } 6145 6146 @Override 6147 public boolean dispatchKeyEvent(KeyEvent event) { 6148 switch (event.getAction()) { 6149 case KeyEvent.ACTION_DOWN: 6150 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 6151 break; 6152 case KeyEvent.ACTION_MULTIPLE: 6153 // Always accept the action. 6154 break; 6155 case KeyEvent.ACTION_UP: 6156 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 6157 if (location == -1) { 6158 // We did not receive the key down for this key, so do not 6159 // handle the key up. 6160 return false; 6161 } else { 6162 // We did receive the key down. Handle the key up, and 6163 // remove it from our pressed keys. 6164 mKeysPressed.remove(location); 6165 } 6166 break; 6167 default: 6168 // Accept the action. This should not happen, unless a new 6169 // action is added to KeyEvent. 6170 break; 6171 } 6172 if (inEditingMode() && mWebTextView.isFocused()) { 6173 // Ensure that the WebTextView gets the event, even if it does 6174 // not currently have a bounds. 6175 return mWebTextView.dispatchKeyEvent(event); 6176 } else { 6177 return super.dispatchKeyEvent(event); 6178 } 6179 } 6180 6181 /* 6182 * Here is the snap align logic: 6183 * 1. If it starts nearly horizontally or vertically, snap align; 6184 * 2. If there is a dramitic direction change, let it go; 6185 * 6186 * Adjustable parameters. Angle is the radians on a unit circle, limited 6187 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 6188 */ 6189 private static final float HSLOPE_TO_START_SNAP = .25f; 6190 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 6191 private static final float VSLOPE_TO_START_SNAP = 1.25f; 6192 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 6193 /* 6194 * These values are used to influence the average angle when entering 6195 * snap mode. If is is the first movement entering snap, we set the average 6196 * to the appropriate ideal. If the user is entering into snap after the 6197 * first movement, then we average the average angle with these values. 6198 */ 6199 private static final float ANGLE_VERT = 2f; 6200 private static final float ANGLE_HORIZ = 0f; 6201 /* 6202 * The modified moving average weight. 6203 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 6204 */ 6205 private static final float MMA_WEIGHT_N = 5; 6206 6207 private boolean hitFocusedPlugin(int contentX, int contentY) { 6208 if (DebugFlags.WEB_VIEW) { 6209 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 6210 Rect r = nativeFocusNodeBounds(); 6211 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 6212 + ", " + r.right + ", " + r.bottom + ")"); 6213 } 6214 return nativeFocusIsPlugin() 6215 && nativeFocusNodeBounds().contains(contentX, contentY); 6216 } 6217 6218 private boolean shouldForwardTouchEvent() { 6219 if (mFullScreenHolder != null) return true; 6220 if (mBlockWebkitViewMessages) return false; 6221 return mForwardTouchEvents 6222 && !mSelectingText 6223 && mPreventDefault != PREVENT_DEFAULT_IGNORE 6224 && mPreventDefault != PREVENT_DEFAULT_NO; 6225 } 6226 6227 private boolean inFullScreenMode() { 6228 return mFullScreenHolder != null; 6229 } 6230 6231 private void dismissFullScreenMode() { 6232 if (inFullScreenMode()) { 6233 mFullScreenHolder.hide(); 6234 mFullScreenHolder = null; 6235 invalidate(); 6236 } 6237 } 6238 6239 void onPinchToZoomAnimationStart() { 6240 // cancel the single touch handling 6241 cancelTouch(); 6242 onZoomAnimationStart(); 6243 } 6244 6245 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 6246 onZoomAnimationEnd(); 6247 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 6248 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 6249 // as it may trigger the unwanted fling. 6250 mTouchMode = TOUCH_PINCH_DRAG; 6251 mConfirmMove = true; 6252 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 6253 } 6254 6255 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 6256 // layer is found. 6257 private void startScrollingLayer(float x, float y) { 6258 int contentX = viewToContentX((int) x + mScrollX); 6259 int contentY = viewToContentY((int) y + mScrollY); 6260 mCurrentScrollingLayerId = nativeScrollableLayer(contentX, contentY, 6261 mScrollingLayerRect, mScrollingLayerBounds); 6262 if (mCurrentScrollingLayerId != 0) { 6263 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6264 } 6265 } 6266 6267 // 1/(density * density) used to compute the distance between points. 6268 // Computed in init(). 6269 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 6270 6271 // The distance between two points reported in onTouchEvent scaled by the 6272 // density of the screen. 6273 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 6274 6275 @Override 6276 public boolean onHoverEvent(MotionEvent event) { 6277 if (mNativeClass == 0) { 6278 return false; 6279 } 6280 WebViewCore.CursorData data = cursorDataNoPosition(); 6281 data.mX = viewToContentX((int) event.getX() + mScrollX); 6282 data.mY = viewToContentY((int) event.getY() + mScrollY); 6283 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 6284 return true; 6285 } 6286 6287 @Override 6288 public boolean onTouchEvent(MotionEvent ev) { 6289 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 6290 return false; 6291 } 6292 6293 if (DebugFlags.WEB_VIEW) { 6294 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 6295 + " mTouchMode=" + mTouchMode 6296 + " numPointers=" + ev.getPointerCount()); 6297 } 6298 6299 // If WebKit wasn't interested in this multitouch gesture, enqueue 6300 // the event for handling directly rather than making the round trip 6301 // to WebKit and back. 6302 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 6303 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 6304 } else { 6305 mTouchEventQueue.enqueueTouchEvent(ev); 6306 } 6307 6308 // Since all events are handled asynchronously, we always want the gesture stream. 6309 return true; 6310 } 6311 6312 private float calculateDragAngle(int dx, int dy) { 6313 dx = Math.abs(dx); 6314 dy = Math.abs(dy); 6315 return (float) Math.atan2(dy, dx); 6316 } 6317 6318 /* 6319 * Common code for single touch and multi-touch. 6320 * (x, y) denotes current focus point, which is the touch point for single touch 6321 * and the middle point for multi-touch. 6322 */ 6323 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 6324 long eventTime = ev.getEventTime(); 6325 6326 // Due to the touch screen edge effect, a touch closer to the edge 6327 // always snapped to the edge. As getViewWidth() can be different from 6328 // getWidth() due to the scrollbar, adjusting the point to match 6329 // getViewWidth(). Same applied to the height. 6330 x = Math.min(x, getViewWidth() - 1); 6331 y = Math.min(y, getViewHeightWithTitle() - 1); 6332 6333 int deltaX = mLastTouchX - x; 6334 int deltaY = mLastTouchY - y; 6335 int contentX = viewToContentX(x + mScrollX); 6336 int contentY = viewToContentY(y + mScrollY); 6337 6338 switch (action) { 6339 case MotionEvent.ACTION_DOWN: { 6340 mPreventDefault = PREVENT_DEFAULT_NO; 6341 mConfirmMove = false; 6342 mInitialHitTestResult = null; 6343 if (!mScroller.isFinished()) { 6344 // stop the current scroll animation, but if this is 6345 // the start of a fling, allow it to add to the current 6346 // fling's velocity 6347 mScroller.abortAnimation(); 6348 mTouchMode = TOUCH_DRAG_START_MODE; 6349 mConfirmMove = true; 6350 nativeSetIsScrolling(false); 6351 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 6352 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 6353 if (sDisableNavcache) { 6354 removeTouchHighlight(); 6355 } 6356 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 6357 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 6358 } else { 6359 // commit the short press action for the previous tap 6360 doShortPress(); 6361 mTouchMode = TOUCH_INIT_MODE; 6362 mDeferTouchProcess = !mBlockWebkitViewMessages 6363 && (!inFullScreenMode() && mForwardTouchEvents) 6364 ? hitFocusedPlugin(contentX, contentY) 6365 : false; 6366 } 6367 } else { // the normal case 6368 mTouchMode = TOUCH_INIT_MODE; 6369 mDeferTouchProcess = !mBlockWebkitViewMessages 6370 && (!inFullScreenMode() && mForwardTouchEvents) 6371 ? hitFocusedPlugin(contentX, contentY) 6372 : false; 6373 if (!mBlockWebkitViewMessages) { 6374 mWebViewCore.sendMessage( 6375 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 6376 } 6377 if (sDisableNavcache) { 6378 TouchHighlightData data = new TouchHighlightData(); 6379 data.mX = contentX; 6380 data.mY = contentY; 6381 data.mNativeLayerRect = new Rect(); 6382 data.mNativeLayer = nativeScrollableLayer( 6383 contentX, contentY, data.mNativeLayerRect, null); 6384 data.mSlop = viewToContentDimension(mNavSlop); 6385 mTouchHighlightRegion.setEmpty(); 6386 if (!mBlockWebkitViewMessages) { 6387 mTouchHighlightRequested = System.currentTimeMillis(); 6388 mWebViewCore.sendMessageAtFrontOfQueue( 6389 EventHub.HIT_TEST, data); 6390 } 6391 if (DEBUG_TOUCH_HIGHLIGHT) { 6392 if (getSettings().getNavDump()) { 6393 mTouchHighlightX = x + mScrollX; 6394 mTouchHighlightY = y + mScrollY; 6395 mPrivateHandler.postDelayed(new Runnable() { 6396 @Override 6397 public void run() { 6398 mTouchHighlightX = mTouchHighlightY = 0; 6399 invalidate(); 6400 } 6401 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 6402 } 6403 } 6404 } 6405 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 6406 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 6407 (eventTime - mLastTouchUpTime), eventTime); 6408 } 6409 if (mSelectingText) { 6410 mDrawSelectionPointer = false; 6411 mSelectionStarted = nativeStartSelection(contentX, contentY); 6412 if (DebugFlags.WEB_VIEW) { 6413 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 6414 } 6415 invalidate(); 6416 } 6417 } 6418 // Trigger the link 6419 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 6420 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 6421 mPrivateHandler.sendEmptyMessageDelayed( 6422 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 6423 mPrivateHandler.sendEmptyMessageDelayed( 6424 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 6425 if (inFullScreenMode() || mDeferTouchProcess) { 6426 mPreventDefault = PREVENT_DEFAULT_YES; 6427 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 6428 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 6429 } else { 6430 mPreventDefault = PREVENT_DEFAULT_NO; 6431 } 6432 // pass the touch events from UI thread to WebCore thread 6433 if (shouldForwardTouchEvent()) { 6434 TouchEventData ted = new TouchEventData(); 6435 ted.mAction = action; 6436 ted.mIds = new int[1]; 6437 ted.mIds[0] = ev.getPointerId(0); 6438 ted.mPoints = new Point[1]; 6439 ted.mPoints[0] = new Point(contentX, contentY); 6440 ted.mPointsInView = new Point[1]; 6441 ted.mPointsInView[0] = new Point(x, y); 6442 ted.mMetaState = ev.getMetaState(); 6443 ted.mReprocess = mDeferTouchProcess; 6444 ted.mNativeLayer = nativeScrollableLayer( 6445 contentX, contentY, ted.mNativeLayerRect, null); 6446 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6447 mTouchEventQueue.preQueueTouchEventData(ted); 6448 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6449 if (mDeferTouchProcess) { 6450 // still needs to set them for compute deltaX/Y 6451 mLastTouchX = x; 6452 mLastTouchY = y; 6453 break; 6454 } 6455 if (!inFullScreenMode()) { 6456 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 6457 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6458 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6459 action, 0), TAP_TIMEOUT); 6460 } 6461 } 6462 } 6463 startTouch(x, y, eventTime); 6464 break; 6465 } 6466 case MotionEvent.ACTION_MOVE: { 6467 boolean firstMove = false; 6468 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 6469 >= mTouchSlopSquare) { 6470 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6471 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6472 mConfirmMove = true; 6473 firstMove = true; 6474 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6475 mTouchMode = TOUCH_INIT_MODE; 6476 } 6477 if (sDisableNavcache) { 6478 removeTouchHighlight(); 6479 } 6480 } 6481 // pass the touch events from UI thread to WebCore thread 6482 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 6483 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 6484 TouchEventData ted = new TouchEventData(); 6485 ted.mAction = action; 6486 ted.mIds = new int[1]; 6487 ted.mIds[0] = ev.getPointerId(0); 6488 ted.mPoints = new Point[1]; 6489 ted.mPoints[0] = new Point(contentX, contentY); 6490 ted.mPointsInView = new Point[1]; 6491 ted.mPointsInView[0] = new Point(x, y); 6492 ted.mMetaState = ev.getMetaState(); 6493 ted.mReprocess = mDeferTouchProcess; 6494 ted.mNativeLayer = mCurrentScrollingLayerId; 6495 ted.mNativeLayerRect.set(mScrollingLayerRect); 6496 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6497 mTouchEventQueue.preQueueTouchEventData(ted); 6498 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6499 mLastSentTouchTime = eventTime; 6500 if (mDeferTouchProcess) { 6501 break; 6502 } 6503 if (firstMove && !inFullScreenMode()) { 6504 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6505 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6506 action, 0), TAP_TIMEOUT); 6507 } 6508 } 6509 if (mTouchMode == TOUCH_DONE_MODE 6510 || mPreventDefault == PREVENT_DEFAULT_YES) { 6511 // no dragging during scroll zoom animation, or when prevent 6512 // default is yes 6513 break; 6514 } 6515 if (mVelocityTracker == null) { 6516 Log.e(LOGTAG, "Got null mVelocityTracker when " 6517 + "mPreventDefault = " + mPreventDefault 6518 + " mDeferTouchProcess = " + mDeferTouchProcess 6519 + " mTouchMode = " + mTouchMode); 6520 } else { 6521 mVelocityTracker.addMovement(ev); 6522 } 6523 if (mSelectingText && mSelectionStarted) { 6524 if (DebugFlags.WEB_VIEW) { 6525 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 6526 } 6527 ViewParent parent = getParent(); 6528 if (parent != null) { 6529 parent.requestDisallowInterceptTouchEvent(true); 6530 } 6531 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 6532 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 6533 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 6534 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 6535 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 6536 && !mSentAutoScrollMessage) { 6537 mSentAutoScrollMessage = true; 6538 mPrivateHandler.sendEmptyMessageDelayed( 6539 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 6540 } 6541 if (deltaX != 0 || deltaY != 0) { 6542 nativeExtendSelection(contentX, contentY); 6543 invalidate(); 6544 } 6545 break; 6546 } 6547 6548 if (mTouchMode != TOUCH_DRAG_MODE && 6549 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6550 6551 if (!mConfirmMove) { 6552 break; 6553 } 6554 6555 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6556 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6557 // track mLastTouchTime as we may need to do fling at 6558 // ACTION_UP 6559 mLastTouchTime = eventTime; 6560 break; 6561 } 6562 6563 // Only lock dragging to one axis if we don't have a scale in progress. 6564 // Scaling implies free-roaming movement. Note this is only ever a question 6565 // if mZoomManager.supportsPanDuringZoom() is true. 6566 final ScaleGestureDetector detector = 6567 mZoomManager.getMultiTouchGestureDetector(); 6568 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6569 if (detector == null || !detector.isInProgress()) { 6570 // if it starts nearly horizontal or vertical, enforce it 6571 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6572 mSnapScrollMode = SNAP_X; 6573 mSnapPositive = deltaX > 0; 6574 mAverageAngle = ANGLE_HORIZ; 6575 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6576 mSnapScrollMode = SNAP_Y; 6577 mSnapPositive = deltaY > 0; 6578 mAverageAngle = ANGLE_VERT; 6579 } 6580 } 6581 6582 mTouchMode = TOUCH_DRAG_MODE; 6583 mLastTouchX = x; 6584 mLastTouchY = y; 6585 deltaX = 0; 6586 deltaY = 0; 6587 6588 startScrollingLayer(x, y); 6589 startDrag(); 6590 } 6591 6592 // do pan 6593 boolean done = false; 6594 boolean keepScrollBarsVisible = false; 6595 if (deltaX == 0 && deltaY == 0) { 6596 keepScrollBarsVisible = done = true; 6597 } else { 6598 mAverageAngle += 6599 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6600 / MMA_WEIGHT_N; 6601 if (mSnapScrollMode != SNAP_NONE) { 6602 if (mSnapScrollMode == SNAP_Y) { 6603 // radical change means getting out of snap mode 6604 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6605 mSnapScrollMode = SNAP_NONE; 6606 } 6607 } 6608 if (mSnapScrollMode == SNAP_X) { 6609 // radical change means getting out of snap mode 6610 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6611 mSnapScrollMode = SNAP_NONE; 6612 } 6613 } 6614 } else { 6615 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6616 mSnapScrollMode = SNAP_X; 6617 mSnapPositive = deltaX > 0; 6618 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6619 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6620 mSnapScrollMode = SNAP_Y; 6621 mSnapPositive = deltaY > 0; 6622 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6623 } 6624 } 6625 if (mSnapScrollMode != SNAP_NONE) { 6626 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6627 deltaY = 0; 6628 } else { 6629 deltaX = 0; 6630 } 6631 } 6632 mLastTouchX = x; 6633 mLastTouchY = y; 6634 6635 if (deltaX * deltaX + deltaY * deltaY > mTouchSlopSquare) { 6636 mHeldMotionless = MOTIONLESS_FALSE; 6637 nativeSetIsScrolling(true); 6638 } else { 6639 mHeldMotionless = MOTIONLESS_TRUE; 6640 nativeSetIsScrolling(false); 6641 keepScrollBarsVisible = true; 6642 } 6643 6644 mLastTouchTime = eventTime; 6645 } 6646 6647 doDrag(deltaX, deltaY); 6648 6649 // Turn off scrollbars when dragging a layer. 6650 if (keepScrollBarsVisible && 6651 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6652 if (mHeldMotionless != MOTIONLESS_TRUE) { 6653 mHeldMotionless = MOTIONLESS_TRUE; 6654 invalidate(); 6655 } 6656 // keep the scrollbar on the screen even there is no scroll 6657 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6658 false); 6659 // Post a message so that we'll keep them alive while we're not scrolling. 6660 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6661 .obtainMessage(AWAKEN_SCROLL_BARS), 6662 ViewConfiguration.getScrollDefaultDelay()); 6663 // return false to indicate that we can't pan out of the 6664 // view space 6665 return !done; 6666 } else { 6667 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6668 } 6669 break; 6670 } 6671 case MotionEvent.ACTION_UP: { 6672 if (!isFocused()) requestFocus(); 6673 // pass the touch events from UI thread to WebCore thread 6674 if (shouldForwardTouchEvent()) { 6675 TouchEventData ted = new TouchEventData(); 6676 ted.mIds = new int[1]; 6677 ted.mIds[0] = ev.getPointerId(0); 6678 ted.mAction = action; 6679 ted.mPoints = new Point[1]; 6680 ted.mPoints[0] = new Point(contentX, contentY); 6681 ted.mPointsInView = new Point[1]; 6682 ted.mPointsInView[0] = new Point(x, y); 6683 ted.mMetaState = ev.getMetaState(); 6684 ted.mReprocess = mDeferTouchProcess; 6685 ted.mNativeLayer = mCurrentScrollingLayerId; 6686 ted.mNativeLayerRect.set(mScrollingLayerRect); 6687 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6688 mTouchEventQueue.preQueueTouchEventData(ted); 6689 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6690 } 6691 mLastTouchUpTime = eventTime; 6692 if (mSentAutoScrollMessage) { 6693 mAutoScrollX = mAutoScrollY = 0; 6694 } 6695 switch (mTouchMode) { 6696 case TOUCH_DOUBLE_TAP_MODE: // double tap 6697 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6698 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6699 if (inFullScreenMode() || mDeferTouchProcess) { 6700 TouchEventData ted = new TouchEventData(); 6701 ted.mIds = new int[1]; 6702 ted.mIds[0] = ev.getPointerId(0); 6703 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6704 ted.mPoints = new Point[1]; 6705 ted.mPoints[0] = new Point(contentX, contentY); 6706 ted.mPointsInView = new Point[1]; 6707 ted.mPointsInView[0] = new Point(x, y); 6708 ted.mMetaState = ev.getMetaState(); 6709 ted.mReprocess = mDeferTouchProcess; 6710 ted.mNativeLayer = nativeScrollableLayer( 6711 contentX, contentY, 6712 ted.mNativeLayerRect, null); 6713 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6714 mTouchEventQueue.preQueueTouchEventData(ted); 6715 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6716 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6717 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6718 mTouchMode = TOUCH_DONE_MODE; 6719 } 6720 break; 6721 case TOUCH_INIT_MODE: // tap 6722 case TOUCH_SHORTPRESS_START_MODE: 6723 case TOUCH_SHORTPRESS_MODE: 6724 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6725 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6726 if (mConfirmMove) { 6727 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6728 " WebCore's response for touch down."); 6729 if (mPreventDefault != PREVENT_DEFAULT_YES 6730 && (computeMaxScrollX() > 0 6731 || computeMaxScrollY() > 0)) { 6732 // If the user has performed a very quick touch 6733 // sequence it is possible that we may get here 6734 // before WebCore has had a chance to process the events. 6735 // In this case, any call to preventDefault in the 6736 // JS touch handler will not have been executed yet. 6737 // Hence we will see both the UI (now) and WebCore 6738 // (when context switches) handling the event, 6739 // regardless of whether the web developer actually 6740 // doeses preventDefault in their touch handler. This 6741 // is the nature of our asynchronous touch model. 6742 6743 // we will not rewrite drag code here, but we 6744 // will try fling if it applies. 6745 WebViewCore.reducePriority(); 6746 // to get better performance, pause updating the 6747 // picture 6748 WebViewCore.pauseUpdatePicture(mWebViewCore); 6749 // fall through to TOUCH_DRAG_MODE 6750 } else { 6751 // WebKit may consume the touch event and modify 6752 // DOM. drawContentPicture() will be called with 6753 // animateSroll as true for better performance. 6754 // Force redraw in high-quality. 6755 invalidate(); 6756 break; 6757 } 6758 } else { 6759 if (mSelectingText) { 6760 // tapping on selection or controls does nothing 6761 if (!nativeHitSelection(contentX, contentY)) { 6762 selectionDone(); 6763 } 6764 break; 6765 } 6766 // only trigger double tap if the WebView is 6767 // scalable 6768 if (mTouchMode == TOUCH_INIT_MODE 6769 && (canZoomIn() || canZoomOut())) { 6770 mPrivateHandler.sendEmptyMessageDelayed( 6771 RELEASE_SINGLE_TAP, ViewConfiguration 6772 .getDoubleTapTimeout()); 6773 } else { 6774 doShortPress(); 6775 } 6776 break; 6777 } 6778 case TOUCH_DRAG_MODE: 6779 case TOUCH_DRAG_LAYER_MODE: 6780 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6781 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6782 // if the user waits a while w/o moving before the 6783 // up, we don't want to do a fling 6784 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6785 if (mVelocityTracker == null) { 6786 Log.e(LOGTAG, "Got null mVelocityTracker when " 6787 + "mPreventDefault = " 6788 + mPreventDefault 6789 + " mDeferTouchProcess = " 6790 + mDeferTouchProcess); 6791 } else { 6792 mVelocityTracker.addMovement(ev); 6793 } 6794 // set to MOTIONLESS_IGNORE so that it won't keep 6795 // removing and sending message in 6796 // drawCoreAndCursorRing() 6797 mHeldMotionless = MOTIONLESS_IGNORE; 6798 doFling(); 6799 break; 6800 } else { 6801 if (mScroller.springBack(mScrollX, mScrollY, 0, 6802 computeMaxScrollX(), 0, 6803 computeMaxScrollY())) { 6804 invalidate(); 6805 } 6806 } 6807 // redraw in high-quality, as we're done dragging 6808 mHeldMotionless = MOTIONLESS_TRUE; 6809 invalidate(); 6810 // fall through 6811 case TOUCH_DRAG_START_MODE: 6812 // TOUCH_DRAG_START_MODE should not happen for the real 6813 // device as we almost certain will get a MOVE. But this 6814 // is possible on emulator. 6815 mLastVelocity = 0; 6816 WebViewCore.resumePriority(); 6817 if (!mSelectingText) { 6818 WebViewCore.resumeUpdatePicture(mWebViewCore); 6819 } 6820 break; 6821 } 6822 stopTouch(); 6823 break; 6824 } 6825 case MotionEvent.ACTION_CANCEL: { 6826 if (mTouchMode == TOUCH_DRAG_MODE) { 6827 mScroller.springBack(mScrollX, mScrollY, 0, 6828 computeMaxScrollX(), 0, computeMaxScrollY()); 6829 invalidate(); 6830 } 6831 cancelWebCoreTouchEvent(contentX, contentY, false); 6832 cancelTouch(); 6833 break; 6834 } 6835 } 6836 return true; 6837 } 6838 6839 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6840 TouchEventData ted = new TouchEventData(); 6841 ted.mAction = ev.getActionMasked(); 6842 final int count = ev.getPointerCount(); 6843 ted.mIds = new int[count]; 6844 ted.mPoints = new Point[count]; 6845 ted.mPointsInView = new Point[count]; 6846 for (int c = 0; c < count; c++) { 6847 ted.mIds[c] = ev.getPointerId(c); 6848 int x = viewToContentX((int) ev.getX(c) + mScrollX); 6849 int y = viewToContentY((int) ev.getY(c) + mScrollY); 6850 ted.mPoints[c] = new Point(x, y); 6851 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6852 } 6853 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6854 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6855 ted.mActionIndex = ev.getActionIndex(); 6856 } 6857 ted.mMetaState = ev.getMetaState(); 6858 ted.mReprocess = true; 6859 ted.mMotionEvent = MotionEvent.obtain(ev); 6860 ted.mSequence = sequence; 6861 mTouchEventQueue.preQueueTouchEventData(ted); 6862 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6863 cancelLongPress(); 6864 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6865 } 6866 6867 void handleMultiTouchInWebView(MotionEvent ev) { 6868 if (DebugFlags.WEB_VIEW) { 6869 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6870 + " mTouchMode=" + mTouchMode 6871 + " numPointers=" + ev.getPointerCount() 6872 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6873 } 6874 6875 final ScaleGestureDetector detector = 6876 mZoomManager.getMultiTouchGestureDetector(); 6877 6878 // A few apps use WebView but don't instantiate gesture detector. 6879 // We don't need to support multi touch for them. 6880 if (detector == null) return; 6881 6882 float x = ev.getX(); 6883 float y = ev.getY(); 6884 6885 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6886 detector.onTouchEvent(ev); 6887 6888 if (detector.isInProgress()) { 6889 if (DebugFlags.WEB_VIEW) { 6890 Log.v(LOGTAG, "detector is in progress"); 6891 } 6892 mLastTouchTime = ev.getEventTime(); 6893 x = detector.getFocusX(); 6894 y = detector.getFocusY(); 6895 6896 cancelLongPress(); 6897 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6898 if (!mZoomManager.supportsPanDuringZoom()) { 6899 return; 6900 } 6901 mTouchMode = TOUCH_DRAG_MODE; 6902 if (mVelocityTracker == null) { 6903 mVelocityTracker = VelocityTracker.obtain(); 6904 } 6905 } 6906 } 6907 6908 int action = ev.getActionMasked(); 6909 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6910 cancelTouch(); 6911 action = MotionEvent.ACTION_DOWN; 6912 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 6913 // set mLastTouchX/Y to the remaining points for multi-touch. 6914 mLastTouchX = Math.round(x); 6915 mLastTouchY = Math.round(y); 6916 } else if (action == MotionEvent.ACTION_MOVE) { 6917 // negative x or y indicate it is on the edge, skip it. 6918 if (x < 0 || y < 0) { 6919 return; 6920 } 6921 } 6922 6923 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6924 } 6925 6926 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6927 if (shouldForwardTouchEvent()) { 6928 if (removeEvents) { 6929 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6930 } 6931 TouchEventData ted = new TouchEventData(); 6932 ted.mIds = new int[1]; 6933 ted.mIds[0] = 0; 6934 ted.mPoints = new Point[1]; 6935 ted.mPoints[0] = new Point(x, y); 6936 ted.mPointsInView = new Point[1]; 6937 int viewX = contentToViewX(x) - mScrollX; 6938 int viewY = contentToViewY(y) - mScrollY; 6939 ted.mPointsInView[0] = new Point(viewX, viewY); 6940 ted.mAction = MotionEvent.ACTION_CANCEL; 6941 ted.mNativeLayer = nativeScrollableLayer( 6942 x, y, ted.mNativeLayerRect, null); 6943 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6944 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6945 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6946 6947 if (removeEvents) { 6948 // Mark this after sending the message above; we should 6949 // be willing to ignore the cancel event that we just sent. 6950 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6951 } 6952 } 6953 } 6954 6955 private void startTouch(float x, float y, long eventTime) { 6956 // Remember where the motion event started 6957 mStartTouchX = mLastTouchX = Math.round(x); 6958 mStartTouchY = mLastTouchY = Math.round(y); 6959 mLastTouchTime = eventTime; 6960 mVelocityTracker = VelocityTracker.obtain(); 6961 mSnapScrollMode = SNAP_NONE; 6962 mPrivateHandler.sendEmptyMessageDelayed(UPDATE_SELECTION, 6963 ViewConfiguration.getTapTimeout()); 6964 } 6965 6966 private void startDrag() { 6967 WebViewCore.reducePriority(); 6968 // to get better performance, pause updating the picture 6969 WebViewCore.pauseUpdatePicture(mWebViewCore); 6970 nativeSetIsScrolling(true); 6971 6972 if (!mDragFromTextInput) { 6973 nativeHideCursor(); 6974 } 6975 6976 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6977 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6978 mZoomManager.invokeZoomPicker(); 6979 } 6980 } 6981 6982 private void doDrag(int deltaX, int deltaY) { 6983 if ((deltaX | deltaY) != 0) { 6984 int oldX = mScrollX; 6985 int oldY = mScrollY; 6986 int rangeX = computeMaxScrollX(); 6987 int rangeY = computeMaxScrollY(); 6988 // Check for the original scrolling layer in case we change 6989 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6990 // reached the edge of a layer but mScrollingLayer will be non-zero 6991 // if we initiated the drag on a layer. 6992 if (mCurrentScrollingLayerId != 0) { 6993 final int contentX = viewToContentDimension(deltaX); 6994 final int contentY = viewToContentDimension(deltaY); 6995 6996 // Check the scrolling bounds to see if we will actually do any 6997 // scrolling. The rectangle is in document coordinates. 6998 final int maxX = mScrollingLayerRect.right; 6999 final int maxY = mScrollingLayerRect.bottom; 7000 final int resultX = Math.max(0, 7001 Math.min(mScrollingLayerRect.left + contentX, maxX)); 7002 final int resultY = Math.max(0, 7003 Math.min(mScrollingLayerRect.top + contentY, maxY)); 7004 7005 if (resultX != mScrollingLayerRect.left || 7006 resultY != mScrollingLayerRect.top) { 7007 // In case we switched to dragging the page. 7008 mTouchMode = TOUCH_DRAG_LAYER_MODE; 7009 deltaX = contentX; 7010 deltaY = contentY; 7011 oldX = mScrollingLayerRect.left; 7012 oldY = mScrollingLayerRect.top; 7013 rangeX = maxX; 7014 rangeY = maxY; 7015 } else { 7016 // Scroll the main page if we are not going to scroll the 7017 // layer. This does not reset mScrollingLayer in case the 7018 // user changes directions and the layer can scroll the 7019 // other way. 7020 mTouchMode = TOUCH_DRAG_MODE; 7021 } 7022 } 7023 7024 if (mOverScrollGlow != null) { 7025 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 7026 } 7027 7028 overScrollBy(deltaX, deltaY, oldX, oldY, 7029 rangeX, rangeY, 7030 mOverscrollDistance, mOverscrollDistance, true); 7031 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 7032 invalidate(); 7033 } 7034 } 7035 mZoomManager.keepZoomPickerVisible(); 7036 } 7037 7038 private void stopTouch() { 7039 if (mScroller.isFinished() && !mSelectingText 7040 && (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 7041 WebViewCore.resumePriority(); 7042 WebViewCore.resumeUpdatePicture(mWebViewCore); 7043 nativeSetIsScrolling(false); 7044 } 7045 7046 // we also use mVelocityTracker == null to tell us that we are 7047 // not "moving around", so we can take the slower/prettier 7048 // mode in the drawing code 7049 if (mVelocityTracker != null) { 7050 mVelocityTracker.recycle(); 7051 mVelocityTracker = null; 7052 } 7053 7054 // Release any pulled glows 7055 if (mOverScrollGlow != null) { 7056 mOverScrollGlow.releaseAll(); 7057 } 7058 } 7059 7060 private void cancelTouch() { 7061 // we also use mVelocityTracker == null to tell us that we are 7062 // not "moving around", so we can take the slower/prettier 7063 // mode in the drawing code 7064 if (mVelocityTracker != null) { 7065 mVelocityTracker.recycle(); 7066 mVelocityTracker = null; 7067 } 7068 7069 if ((mTouchMode == TOUCH_DRAG_MODE 7070 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 7071 WebViewCore.resumePriority(); 7072 WebViewCore.resumeUpdatePicture(mWebViewCore); 7073 nativeSetIsScrolling(false); 7074 } 7075 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 7076 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7077 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 7078 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 7079 if (sDisableNavcache) { 7080 removeTouchHighlight(); 7081 } 7082 mHeldMotionless = MOTIONLESS_TRUE; 7083 mTouchMode = TOUCH_DONE_MODE; 7084 nativeHideCursor(); 7085 } 7086 7087 @Override 7088 public boolean onGenericMotionEvent(MotionEvent event) { 7089 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 7090 switch (event.getAction()) { 7091 case MotionEvent.ACTION_SCROLL: { 7092 final float vscroll; 7093 final float hscroll; 7094 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 7095 vscroll = 0; 7096 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 7097 } else { 7098 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 7099 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 7100 } 7101 if (hscroll != 0 || vscroll != 0) { 7102 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 7103 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 7104 if (pinScrollBy(hdelta, vdelta, false, 0)) { 7105 return true; 7106 } 7107 } 7108 } 7109 } 7110 } 7111 return super.onGenericMotionEvent(event); 7112 } 7113 7114 private long mTrackballFirstTime = 0; 7115 private long mTrackballLastTime = 0; 7116 private float mTrackballRemainsX = 0.0f; 7117 private float mTrackballRemainsY = 0.0f; 7118 private int mTrackballXMove = 0; 7119 private int mTrackballYMove = 0; 7120 private boolean mSelectingText = false; 7121 private boolean mSelectionStarted = false; 7122 private boolean mExtendSelection = false; 7123 private boolean mDrawSelectionPointer = false; 7124 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 7125 private static final int TRACKBALL_TIMEOUT = 200; 7126 private static final int TRACKBALL_WAIT = 100; 7127 private static final int TRACKBALL_SCALE = 400; 7128 private static final int TRACKBALL_SCROLL_COUNT = 5; 7129 private static final int TRACKBALL_MOVE_COUNT = 10; 7130 private static final int TRACKBALL_MULTIPLIER = 3; 7131 private static final int SELECT_CURSOR_OFFSET = 16; 7132 private static final int SELECT_SCROLL = 5; 7133 private int mSelectX = 0; 7134 private int mSelectY = 0; 7135 private boolean mFocusSizeChanged = false; 7136 private boolean mTrackballDown = false; 7137 private long mTrackballUpTime = 0; 7138 private long mLastCursorTime = 0; 7139 private Rect mLastCursorBounds; 7140 7141 // Set by default; BrowserActivity clears to interpret trackball data 7142 // directly for movement. Currently, the framework only passes 7143 // arrow key events, not trackball events, from one child to the next 7144 private boolean mMapTrackballToArrowKeys = true; 7145 7146 private DrawData mDelaySetPicture; 7147 private DrawData mLoadedPicture; 7148 7149 public void setMapTrackballToArrowKeys(boolean setMap) { 7150 checkThread(); 7151 mMapTrackballToArrowKeys = setMap; 7152 } 7153 7154 void resetTrackballTime() { 7155 mTrackballLastTime = 0; 7156 } 7157 7158 @Override 7159 public boolean onTrackballEvent(MotionEvent ev) { 7160 long time = ev.getEventTime(); 7161 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 7162 if (ev.getY() > 0) pageDown(true); 7163 if (ev.getY() < 0) pageUp(true); 7164 return true; 7165 } 7166 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 7167 if (mSelectingText) { 7168 return true; // discard press if copy in progress 7169 } 7170 mTrackballDown = true; 7171 if (mNativeClass == 0) { 7172 return false; 7173 } 7174 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 7175 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 7176 nativeSelectBestAt(mLastCursorBounds); 7177 } 7178 if (DebugFlags.WEB_VIEW) { 7179 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 7180 + " time=" + time 7181 + " mLastCursorTime=" + mLastCursorTime); 7182 } 7183 if (isInTouchMode()) requestFocusFromTouch(); 7184 return false; // let common code in onKeyDown at it 7185 } 7186 if (ev.getAction() == MotionEvent.ACTION_UP) { 7187 // LONG_PRESS_CENTER is set in common onKeyDown 7188 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 7189 mTrackballDown = false; 7190 mTrackballUpTime = time; 7191 if (mSelectingText) { 7192 if (mExtendSelection) { 7193 copySelection(); 7194 selectionDone(); 7195 } else { 7196 mExtendSelection = true; 7197 nativeSetExtendSelection(); 7198 invalidate(); // draw the i-beam instead of the arrow 7199 } 7200 return true; // discard press if copy in progress 7201 } 7202 if (DebugFlags.WEB_VIEW) { 7203 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 7204 + " time=" + time 7205 ); 7206 } 7207 return false; // let common code in onKeyUp at it 7208 } 7209 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 7210 AccessibilityManager.getInstance(mContext).isEnabled()) { 7211 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 7212 return false; 7213 } 7214 if (mTrackballDown) { 7215 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 7216 return true; // discard move if trackball is down 7217 } 7218 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 7219 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 7220 return true; 7221 } 7222 // TODO: alternatively we can do panning as touch does 7223 switchOutDrawHistory(); 7224 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 7225 if (DebugFlags.WEB_VIEW) { 7226 Log.v(LOGTAG, "onTrackballEvent time=" 7227 + time + " last=" + mTrackballLastTime); 7228 } 7229 mTrackballFirstTime = time; 7230 mTrackballXMove = mTrackballYMove = 0; 7231 } 7232 mTrackballLastTime = time; 7233 if (DebugFlags.WEB_VIEW) { 7234 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 7235 } 7236 mTrackballRemainsX += ev.getX(); 7237 mTrackballRemainsY += ev.getY(); 7238 doTrackball(time, ev.getMetaState()); 7239 return true; 7240 } 7241 7242 void moveSelection(float xRate, float yRate) { 7243 if (mNativeClass == 0) 7244 return; 7245 int width = getViewWidth(); 7246 int height = getViewHeight(); 7247 mSelectX += xRate; 7248 mSelectY += yRate; 7249 int maxX = width + mScrollX; 7250 int maxY = height + mScrollY; 7251 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 7252 , mSelectX)); 7253 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 7254 , mSelectY)); 7255 if (DebugFlags.WEB_VIEW) { 7256 Log.v(LOGTAG, "moveSelection" 7257 + " mSelectX=" + mSelectX 7258 + " mSelectY=" + mSelectY 7259 + " mScrollX=" + mScrollX 7260 + " mScrollY=" + mScrollY 7261 + " xRate=" + xRate 7262 + " yRate=" + yRate 7263 ); 7264 } 7265 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 7266 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 7267 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 7268 : 0; 7269 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 7270 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 7271 : 0; 7272 pinScrollBy(scrollX, scrollY, true, 0); 7273 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 7274 requestRectangleOnScreen(select); 7275 invalidate(); 7276 } 7277 7278 private int scaleTrackballX(float xRate, int width) { 7279 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 7280 int nextXMove = xMove; 7281 if (xMove > 0) { 7282 if (xMove > mTrackballXMove) { 7283 xMove -= mTrackballXMove; 7284 } 7285 } else if (xMove < mTrackballXMove) { 7286 xMove -= mTrackballXMove; 7287 } 7288 mTrackballXMove = nextXMove; 7289 return xMove; 7290 } 7291 7292 private int scaleTrackballY(float yRate, int height) { 7293 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 7294 int nextYMove = yMove; 7295 if (yMove > 0) { 7296 if (yMove > mTrackballYMove) { 7297 yMove -= mTrackballYMove; 7298 } 7299 } else if (yMove < mTrackballYMove) { 7300 yMove -= mTrackballYMove; 7301 } 7302 mTrackballYMove = nextYMove; 7303 return yMove; 7304 } 7305 7306 private int keyCodeToSoundsEffect(int keyCode) { 7307 switch(keyCode) { 7308 case KeyEvent.KEYCODE_DPAD_UP: 7309 return SoundEffectConstants.NAVIGATION_UP; 7310 case KeyEvent.KEYCODE_DPAD_RIGHT: 7311 return SoundEffectConstants.NAVIGATION_RIGHT; 7312 case KeyEvent.KEYCODE_DPAD_DOWN: 7313 return SoundEffectConstants.NAVIGATION_DOWN; 7314 case KeyEvent.KEYCODE_DPAD_LEFT: 7315 return SoundEffectConstants.NAVIGATION_LEFT; 7316 } 7317 throw new IllegalArgumentException("keyCode must be one of " + 7318 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 7319 "KEYCODE_DPAD_LEFT}."); 7320 } 7321 7322 private void doTrackball(long time, int metaState) { 7323 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 7324 if (elapsed == 0) { 7325 elapsed = TRACKBALL_TIMEOUT; 7326 } 7327 float xRate = mTrackballRemainsX * 1000 / elapsed; 7328 float yRate = mTrackballRemainsY * 1000 / elapsed; 7329 int viewWidth = getViewWidth(); 7330 int viewHeight = getViewHeight(); 7331 if (mSelectingText) { 7332 if (!mDrawSelectionPointer) { 7333 // The last selection was made by touch, disabling drawing the 7334 // selection pointer. Allow the trackball to adjust the 7335 // position of the touch control. 7336 mSelectX = contentToViewX(nativeSelectionX()); 7337 mSelectY = contentToViewY(nativeSelectionY()); 7338 mDrawSelectionPointer = mExtendSelection = true; 7339 nativeSetExtendSelection(); 7340 } 7341 moveSelection(scaleTrackballX(xRate, viewWidth), 7342 scaleTrackballY(yRate, viewHeight)); 7343 mTrackballRemainsX = mTrackballRemainsY = 0; 7344 return; 7345 } 7346 float ax = Math.abs(xRate); 7347 float ay = Math.abs(yRate); 7348 float maxA = Math.max(ax, ay); 7349 if (DebugFlags.WEB_VIEW) { 7350 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 7351 + " xRate=" + xRate 7352 + " yRate=" + yRate 7353 + " mTrackballRemainsX=" + mTrackballRemainsX 7354 + " mTrackballRemainsY=" + mTrackballRemainsY); 7355 } 7356 int width = mContentWidth - viewWidth; 7357 int height = mContentHeight - viewHeight; 7358 if (width < 0) width = 0; 7359 if (height < 0) height = 0; 7360 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 7361 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 7362 maxA = Math.max(ax, ay); 7363 int count = Math.max(0, (int) maxA); 7364 int oldScrollX = mScrollX; 7365 int oldScrollY = mScrollY; 7366 if (count > 0) { 7367 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 7368 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 7369 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 7370 KeyEvent.KEYCODE_DPAD_RIGHT; 7371 count = Math.min(count, TRACKBALL_MOVE_COUNT); 7372 if (DebugFlags.WEB_VIEW) { 7373 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 7374 + " count=" + count 7375 + " mTrackballRemainsX=" + mTrackballRemainsX 7376 + " mTrackballRemainsY=" + mTrackballRemainsY); 7377 } 7378 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 7379 for (int i = 0; i < count; i++) { 7380 letPageHandleNavKey(selectKeyCode, time, true, metaState); 7381 } 7382 letPageHandleNavKey(selectKeyCode, time, false, metaState); 7383 } else if (navHandledKey(selectKeyCode, count, false, time)) { 7384 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 7385 } 7386 mTrackballRemainsX = mTrackballRemainsY = 0; 7387 } 7388 if (count >= TRACKBALL_SCROLL_COUNT) { 7389 int xMove = scaleTrackballX(xRate, width); 7390 int yMove = scaleTrackballY(yRate, height); 7391 if (DebugFlags.WEB_VIEW) { 7392 Log.v(LOGTAG, "doTrackball pinScrollBy" 7393 + " count=" + count 7394 + " xMove=" + xMove + " yMove=" + yMove 7395 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 7396 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 7397 ); 7398 } 7399 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 7400 xMove = 0; 7401 } 7402 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 7403 yMove = 0; 7404 } 7405 if (xMove != 0 || yMove != 0) { 7406 pinScrollBy(xMove, yMove, true, 0); 7407 } 7408 } 7409 } 7410 7411 /** 7412 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 7413 * @return Maximum horizontal scroll position within real content 7414 */ 7415 int computeMaxScrollX() { 7416 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 7417 } 7418 7419 /** 7420 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 7421 * @return Maximum vertical scroll position within real content 7422 */ 7423 int computeMaxScrollY() { 7424 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 7425 - getViewHeightWithTitle(), 0); 7426 } 7427 7428 boolean updateScrollCoordinates(int x, int y) { 7429 int oldX = mScrollX; 7430 int oldY = mScrollY; 7431 mScrollX = x; 7432 mScrollY = y; 7433 if (oldX != mScrollX || oldY != mScrollY) { 7434 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 7435 return true; 7436 } else { 7437 return false; 7438 } 7439 } 7440 7441 public void flingScroll(int vx, int vy) { 7442 checkThread(); 7443 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 7444 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 7445 invalidate(); 7446 } 7447 7448 private void doFling() { 7449 if (mVelocityTracker == null) { 7450 return; 7451 } 7452 int maxX = computeMaxScrollX(); 7453 int maxY = computeMaxScrollY(); 7454 7455 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 7456 int vx = (int) mVelocityTracker.getXVelocity(); 7457 int vy = (int) mVelocityTracker.getYVelocity(); 7458 7459 int scrollX = mScrollX; 7460 int scrollY = mScrollY; 7461 int overscrollDistance = mOverscrollDistance; 7462 int overflingDistance = mOverflingDistance; 7463 7464 // Use the layer's scroll data if applicable. 7465 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 7466 scrollX = mScrollingLayerRect.left; 7467 scrollY = mScrollingLayerRect.top; 7468 maxX = mScrollingLayerRect.right; 7469 maxY = mScrollingLayerRect.bottom; 7470 // No overscrolling for layers. 7471 overscrollDistance = overflingDistance = 0; 7472 } 7473 7474 if (mSnapScrollMode != SNAP_NONE) { 7475 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 7476 vy = 0; 7477 } else { 7478 vx = 0; 7479 } 7480 } 7481 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 7482 WebViewCore.resumePriority(); 7483 if (!mSelectingText) { 7484 WebViewCore.resumeUpdatePicture(mWebViewCore); 7485 } 7486 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 7487 invalidate(); 7488 } 7489 return; 7490 } 7491 float currentVelocity = mScroller.getCurrVelocity(); 7492 float velocity = (float) Math.hypot(vx, vy); 7493 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 7494 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 7495 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 7496 - Math.atan2(vy, vx))); 7497 final float circle = (float) (Math.PI) * 2.0f; 7498 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 7499 vx += currentVelocity * mLastVelX / mLastVelocity; 7500 vy += currentVelocity * mLastVelY / mLastVelocity; 7501 velocity = (float) Math.hypot(vx, vy); 7502 if (DebugFlags.WEB_VIEW) { 7503 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 7504 } 7505 } else if (DebugFlags.WEB_VIEW) { 7506 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 7507 } 7508 } else if (DebugFlags.WEB_VIEW) { 7509 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 7510 + " current=" + currentVelocity 7511 + " vx=" + vx + " vy=" + vy 7512 + " maxX=" + maxX + " maxY=" + maxY 7513 + " scrollX=" + scrollX + " scrollY=" + scrollY 7514 + " layer=" + mCurrentScrollingLayerId); 7515 } 7516 7517 // Allow sloppy flings without overscrolling at the edges. 7518 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 7519 vx = 0; 7520 } 7521 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 7522 vy = 0; 7523 } 7524 7525 if (overscrollDistance < overflingDistance) { 7526 if ((vx > 0 && scrollX == -overscrollDistance) || 7527 (vx < 0 && scrollX == maxX + overscrollDistance)) { 7528 vx = 0; 7529 } 7530 if ((vy > 0 && scrollY == -overscrollDistance) || 7531 (vy < 0 && scrollY == maxY + overscrollDistance)) { 7532 vy = 0; 7533 } 7534 } 7535 7536 mLastVelX = vx; 7537 mLastVelY = vy; 7538 mLastVelocity = velocity; 7539 7540 // no horizontal overscroll if the content just fits 7541 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 7542 maxX == 0 ? 0 : overflingDistance, overflingDistance); 7543 // Duration is calculated based on velocity. With range boundaries and overscroll 7544 // we may not know how long the final animation will take. (Hence the deprecation 7545 // warning on the call below.) It's not a big deal for scroll bars but if webcore 7546 // resumes during this effect we will take a performance hit. See computeScroll; 7547 // we resume webcore there when the animation is finished. 7548 final int time = mScroller.getDuration(); 7549 7550 // Suppress scrollbars for layer scrolling. 7551 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 7552 awakenScrollBars(time); 7553 } 7554 7555 invalidate(); 7556 } 7557 7558 /** 7559 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 7560 * in charge of installing this view to the view hierarchy. This view will 7561 * become visible when the user starts scrolling via touch and fade away if 7562 * the user does not interact with it. 7563 * <p/> 7564 * API version 3 introduces a built-in zoom mechanism that is shown 7565 * automatically by the MapView. This is the preferred approach for 7566 * showing the zoom UI. 7567 * 7568 * @deprecated The built-in zoom mechanism is preferred, see 7569 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 7570 */ 7571 @Deprecated 7572 public View getZoomControls() { 7573 checkThread(); 7574 if (!getSettings().supportZoom()) { 7575 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7576 return null; 7577 } 7578 return mZoomManager.getExternalZoomPicker(); 7579 } 7580 7581 void dismissZoomControl() { 7582 mZoomManager.dismissZoomPicker(); 7583 } 7584 7585 float getDefaultZoomScale() { 7586 return mZoomManager.getDefaultScale(); 7587 } 7588 7589 /** 7590 * Return the overview scale of the WebView 7591 * @return The overview scale. 7592 */ 7593 float getZoomOverviewScale() { 7594 return mZoomManager.getZoomOverviewScale(); 7595 } 7596 7597 /** 7598 * @return TRUE if the WebView can be zoomed in. 7599 */ 7600 public boolean canZoomIn() { 7601 checkThread(); 7602 return mZoomManager.canZoomIn(); 7603 } 7604 7605 /** 7606 * @return TRUE if the WebView can be zoomed out. 7607 */ 7608 public boolean canZoomOut() { 7609 checkThread(); 7610 return mZoomManager.canZoomOut(); 7611 } 7612 7613 /** 7614 * Perform zoom in in the webview 7615 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7616 */ 7617 public boolean zoomIn() { 7618 checkThread(); 7619 return mZoomManager.zoomIn(); 7620 } 7621 7622 /** 7623 * Perform zoom out in the webview 7624 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7625 */ 7626 public boolean zoomOut() { 7627 checkThread(); 7628 return mZoomManager.zoomOut(); 7629 } 7630 7631 /** 7632 * This selects the best clickable target at mLastTouchX and mLastTouchY 7633 * and calls showCursorTimed on the native side 7634 */ 7635 private void updateSelection() { 7636 if (mNativeClass == 0 || sDisableNavcache) { 7637 return; 7638 } 7639 mPrivateHandler.removeMessages(UPDATE_SELECTION); 7640 // mLastTouchX and mLastTouchY are the point in the current viewport 7641 int contentX = viewToContentX(mLastTouchX + mScrollX); 7642 int contentY = viewToContentY(mLastTouchY + mScrollY); 7643 int slop = viewToContentDimension(mNavSlop); 7644 Rect rect = new Rect(contentX - slop, contentY - slop, 7645 contentX + slop, contentY + slop); 7646 nativeSelectBestAt(rect); 7647 mInitialHitTestResult = hitTestResult(null); 7648 } 7649 7650 /** 7651 * Scroll the focused text field to match the WebTextView 7652 * @param xPercent New x position of the WebTextView from 0 to 1. 7653 */ 7654 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7655 if (!inEditingMode() || mWebViewCore == null) { 7656 return; 7657 } 7658 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7659 new Float(xPercent)); 7660 } 7661 7662 /** 7663 * Scroll the focused textarea vertically to match the WebTextView 7664 * @param y New y position of the WebTextView in view coordinates 7665 */ 7666 /* package */ void scrollFocusedTextInputY(int y) { 7667 if (!inEditingMode() || mWebViewCore == null) { 7668 return; 7669 } 7670 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7671 } 7672 7673 /** 7674 * Set our starting point and time for a drag from the WebTextView. 7675 */ 7676 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7677 if (!inEditingMode()) { 7678 return; 7679 } 7680 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7681 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7682 mLastTouchTime = eventTime; 7683 if (!mScroller.isFinished()) { 7684 abortAnimation(); 7685 } 7686 mSnapScrollMode = SNAP_NONE; 7687 mVelocityTracker = VelocityTracker.obtain(); 7688 mTouchMode = TOUCH_DRAG_START_MODE; 7689 } 7690 7691 /** 7692 * Given a motion event from the WebTextView, set its location to our 7693 * coordinates, and handle the event. 7694 */ 7695 /*package*/ boolean textFieldDrag(MotionEvent event) { 7696 if (!inEditingMode()) { 7697 return false; 7698 } 7699 mDragFromTextInput = true; 7700 event.offsetLocation((mWebTextView.getLeft() - mScrollX), 7701 (mWebTextView.getTop() - mScrollY)); 7702 boolean result = onTouchEvent(event); 7703 mDragFromTextInput = false; 7704 return result; 7705 } 7706 7707 /** 7708 * Due a touch up from a WebTextView. This will be handled by webkit to 7709 * change the selection. 7710 * @param event MotionEvent in the WebTextView's coordinates. 7711 */ 7712 /*package*/ void touchUpOnTextField(MotionEvent event) { 7713 if (!inEditingMode()) { 7714 return; 7715 } 7716 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7717 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7718 int slop = viewToContentDimension(mNavSlop); 7719 nativeMotionUp(x, y, slop); 7720 } 7721 7722 /** 7723 * Called when pressing the center key or trackball on a textfield. 7724 */ 7725 /*package*/ void centerKeyPressOnTextField() { 7726 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7727 nativeCursorNodePointer()); 7728 } 7729 7730 private void doShortPress() { 7731 if (mNativeClass == 0) { 7732 return; 7733 } 7734 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7735 return; 7736 } 7737 mTouchMode = TOUCH_DONE_MODE; 7738 updateSelection(); 7739 switchOutDrawHistory(); 7740 // mLastTouchX and mLastTouchY are the point in the current viewport 7741 int contentX = viewToContentX(mLastTouchX + mScrollX); 7742 int contentY = viewToContentY(mLastTouchY + mScrollY); 7743 int slop = viewToContentDimension(mNavSlop); 7744 if (sDisableNavcache && !mTouchHighlightRegion.isEmpty()) { 7745 // set mTouchHighlightRequested to 0 to cause an immediate 7746 // drawing of the touch rings 7747 mTouchHighlightRequested = 0; 7748 invalidate(mTouchHighlightRegion.getBounds()); 7749 mPrivateHandler.postDelayed(new Runnable() { 7750 @Override 7751 public void run() { 7752 removeTouchHighlight(); 7753 } 7754 }, ViewConfiguration.getPressedStateDuration()); 7755 } 7756 if (sDisableNavcache) { 7757 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7758 // use "0" as generation id to inform WebKit to use the same x/y as 7759 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7760 touchUpData.mMoveGeneration = 0; 7761 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7762 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7763 WebViewCore.MotionUpData motionUpData = new WebViewCore 7764 .MotionUpData(); 7765 motionUpData.mFrame = nativeCacheHitFramePointer(); 7766 motionUpData.mNode = nativeCacheHitNodePointer(); 7767 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7768 motionUpData.mX = contentX; 7769 motionUpData.mY = contentY; 7770 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7771 motionUpData); 7772 } else { 7773 doMotionUp(contentX, contentY); 7774 } 7775 } 7776 7777 private void doMotionUp(int contentX, int contentY) { 7778 int slop = viewToContentDimension(mNavSlop); 7779 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7780 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7781 } 7782 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7783 playSoundEffect(SoundEffectConstants.CLICK); 7784 } 7785 } 7786 7787 void sendPluginDrawMsg() { 7788 mWebViewCore.sendMessage(EventHub.PLUGIN_SURFACE_READY); 7789 } 7790 7791 /** 7792 * Returns plugin bounds if x/y in content coordinates corresponds to a 7793 * plugin. Otherwise a NULL rectangle is returned. 7794 */ 7795 Rect getPluginBounds(int x, int y) { 7796 int slop = viewToContentDimension(mNavSlop); 7797 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7798 return nativeCacheHitNodeBounds(); 7799 } else { 7800 return null; 7801 } 7802 } 7803 7804 /* 7805 * Return true if the rect (e.g. plugin) is fully visible and maximized 7806 * inside the WebView. 7807 */ 7808 boolean isRectFitOnScreen(Rect rect) { 7809 final int rectWidth = rect.width(); 7810 final int rectHeight = rect.height(); 7811 final int viewWidth = getViewWidth(); 7812 final int viewHeight = getViewHeightWithTitle(); 7813 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7814 scale = mZoomManager.computeScaleWithLimits(scale); 7815 return !mZoomManager.willScaleTriggerZoom(scale) 7816 && contentToViewX(rect.left) >= mScrollX 7817 && contentToViewX(rect.right) <= mScrollX + viewWidth 7818 && contentToViewY(rect.top) >= mScrollY 7819 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7820 } 7821 7822 /* 7823 * Maximize and center the rectangle, specified in the document coordinate 7824 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7825 * animated scroll to center it. If the zoom needs to be changed, find the 7826 * zoom center and do a smooth zoom transition. The rect is in document 7827 * coordinates 7828 */ 7829 void centerFitRect(Rect rect) { 7830 final int rectWidth = rect.width(); 7831 final int rectHeight = rect.height(); 7832 final int viewWidth = getViewWidth(); 7833 final int viewHeight = getViewHeightWithTitle(); 7834 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7835 / rectHeight); 7836 scale = mZoomManager.computeScaleWithLimits(scale); 7837 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7838 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7839 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7840 true, 0); 7841 } else { 7842 float actualScale = mZoomManager.getScale(); 7843 float oldScreenX = rect.left * actualScale - mScrollX; 7844 float rectViewX = rect.left * scale; 7845 float rectViewWidth = rectWidth * scale; 7846 float newMaxWidth = mContentWidth * scale; 7847 float newScreenX = (viewWidth - rectViewWidth) / 2; 7848 // pin the newX to the WebView 7849 if (newScreenX > rectViewX) { 7850 newScreenX = rectViewX; 7851 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7852 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7853 } 7854 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7855 / (scale - actualScale); 7856 float oldScreenY = rect.top * actualScale + getTitleHeight() 7857 - mScrollY; 7858 float rectViewY = rect.top * scale + getTitleHeight(); 7859 float rectViewHeight = rectHeight * scale; 7860 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7861 float newScreenY = (viewHeight - rectViewHeight) / 2; 7862 // pin the newY to the WebView 7863 if (newScreenY > rectViewY) { 7864 newScreenY = rectViewY; 7865 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7866 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7867 } 7868 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7869 / (scale - actualScale); 7870 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7871 mZoomManager.startZoomAnimation(scale, false); 7872 } 7873 } 7874 7875 // Called by JNI to handle a touch on a node representing an email address, 7876 // address, or phone number 7877 private void overrideLoading(String url) { 7878 mCallbackProxy.uiOverrideUrlLoading(url); 7879 } 7880 7881 @Override 7882 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7883 // FIXME: If a subwindow is showing find, and the user touches the 7884 // background window, it can steal focus. 7885 if (mFindIsUp) return false; 7886 boolean result = false; 7887 if (inEditingMode()) { 7888 result = mWebTextView.requestFocus(direction, 7889 previouslyFocusedRect); 7890 } else { 7891 result = super.requestFocus(direction, previouslyFocusedRect); 7892 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 7893 // For cases such as GMail, where we gain focus from a direction, 7894 // we want to move to the first available link. 7895 // FIXME: If there are no visible links, we may not want to 7896 int fakeKeyDirection = 0; 7897 switch(direction) { 7898 case View.FOCUS_UP: 7899 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7900 break; 7901 case View.FOCUS_DOWN: 7902 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7903 break; 7904 case View.FOCUS_LEFT: 7905 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7906 break; 7907 case View.FOCUS_RIGHT: 7908 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7909 break; 7910 default: 7911 return result; 7912 } 7913 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7914 navHandledKey(fakeKeyDirection, 1, true, 0); 7915 } 7916 } 7917 } 7918 return result; 7919 } 7920 7921 @Override 7922 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7923 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7924 7925 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7926 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7927 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7928 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7929 7930 int measuredHeight = heightSize; 7931 int measuredWidth = widthSize; 7932 7933 // Grab the content size from WebViewCore. 7934 int contentHeight = contentToViewDimension(mContentHeight); 7935 int contentWidth = contentToViewDimension(mContentWidth); 7936 7937// Log.d(LOGTAG, "------- measure " + heightMode); 7938 7939 if (heightMode != MeasureSpec.EXACTLY) { 7940 mHeightCanMeasure = true; 7941 measuredHeight = contentHeight; 7942 if (heightMode == MeasureSpec.AT_MOST) { 7943 // If we are larger than the AT_MOST height, then our height can 7944 // no longer be measured and we should scroll internally. 7945 if (measuredHeight > heightSize) { 7946 measuredHeight = heightSize; 7947 mHeightCanMeasure = false; 7948 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7949 } 7950 } 7951 } else { 7952 mHeightCanMeasure = false; 7953 } 7954 if (mNativeClass != 0) { 7955 nativeSetHeightCanMeasure(mHeightCanMeasure); 7956 } 7957 // For the width, always use the given size unless unspecified. 7958 if (widthMode == MeasureSpec.UNSPECIFIED) { 7959 mWidthCanMeasure = true; 7960 measuredWidth = contentWidth; 7961 } else { 7962 if (measuredWidth < contentWidth) { 7963 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7964 } 7965 mWidthCanMeasure = false; 7966 } 7967 7968 synchronized (this) { 7969 setMeasuredDimension(measuredWidth, measuredHeight); 7970 } 7971 } 7972 7973 @Override 7974 public boolean requestChildRectangleOnScreen(View child, 7975 Rect rect, 7976 boolean immediate) { 7977 if (mNativeClass == 0) { 7978 return false; 7979 } 7980 // don't scroll while in zoom animation. When it is done, we will adjust 7981 // the necessary components (e.g., WebTextView if it is in editing mode) 7982 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7983 return false; 7984 } 7985 7986 rect.offset(child.getLeft() - child.getScrollX(), 7987 child.getTop() - child.getScrollY()); 7988 7989 Rect content = new Rect(viewToContentX(mScrollX), 7990 viewToContentY(mScrollY), 7991 viewToContentX(mScrollX + getWidth() 7992 - getVerticalScrollbarWidth()), 7993 viewToContentY(mScrollY + getViewHeightWithTitle())); 7994 content = nativeSubtractLayers(content); 7995 int screenTop = contentToViewY(content.top); 7996 int screenBottom = contentToViewY(content.bottom); 7997 int height = screenBottom - screenTop; 7998 int scrollYDelta = 0; 7999 8000 if (rect.bottom > screenBottom) { 8001 int oneThirdOfScreenHeight = height / 3; 8002 if (rect.height() > 2 * oneThirdOfScreenHeight) { 8003 // If the rectangle is too tall to fit in the bottom two thirds 8004 // of the screen, place it at the top. 8005 scrollYDelta = rect.top - screenTop; 8006 } else { 8007 // If the rectangle will still fit on screen, we want its 8008 // top to be in the top third of the screen. 8009 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 8010 } 8011 } else if (rect.top < screenTop) { 8012 scrollYDelta = rect.top - screenTop; 8013 } 8014 8015 int screenLeft = contentToViewX(content.left); 8016 int screenRight = contentToViewX(content.right); 8017 int width = screenRight - screenLeft; 8018 int scrollXDelta = 0; 8019 8020 if (rect.right > screenRight && rect.left > screenLeft) { 8021 if (rect.width() > width) { 8022 scrollXDelta += (rect.left - screenLeft); 8023 } else { 8024 scrollXDelta += (rect.right - screenRight); 8025 } 8026 } else if (rect.left < screenLeft) { 8027 scrollXDelta -= (screenLeft - rect.left); 8028 } 8029 8030 if ((scrollYDelta | scrollXDelta) != 0) { 8031 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 8032 } 8033 8034 return false; 8035 } 8036 8037 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 8038 String replace, int newStart, int newEnd) { 8039 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 8040 arg.mReplace = replace; 8041 arg.mNewStart = newStart; 8042 arg.mNewEnd = newEnd; 8043 mTextGeneration++; 8044 arg.mTextGeneration = mTextGeneration; 8045 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 8046 } 8047 8048 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 8049 // check if mWebViewCore has been destroyed 8050 if (mWebViewCore == null) { 8051 return; 8052 } 8053 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 8054 arg.mEvent = event; 8055 arg.mCurrentText = currentText; 8056 // Increase our text generation number, and pass it to webcore thread 8057 mTextGeneration++; 8058 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 8059 // WebKit's document state is not saved until about to leave the page. 8060 // To make sure the host application, like Browser, has the up to date 8061 // document state when it goes to background, we force to save the 8062 // document state. 8063 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 8064 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 8065 cursorData(), 1000); 8066 } 8067 8068 /** 8069 * @hide 8070 */ 8071 public synchronized WebViewCore getWebViewCore() { 8072 return mWebViewCore; 8073 } 8074 8075 /** 8076 * Used only by TouchEventQueue to store pending touch events. 8077 */ 8078 private static class QueuedTouch { 8079 long mSequence; 8080 MotionEvent mEvent; // Optional 8081 TouchEventData mTed; // Optional 8082 8083 QueuedTouch mNext; 8084 8085 public QueuedTouch set(TouchEventData ted) { 8086 mSequence = ted.mSequence; 8087 mTed = ted; 8088 mEvent = null; 8089 mNext = null; 8090 return this; 8091 } 8092 8093 public QueuedTouch set(MotionEvent ev, long sequence) { 8094 mEvent = MotionEvent.obtain(ev); 8095 mSequence = sequence; 8096 mTed = null; 8097 mNext = null; 8098 return this; 8099 } 8100 8101 public QueuedTouch add(QueuedTouch other) { 8102 if (other.mSequence < mSequence) { 8103 other.mNext = this; 8104 return other; 8105 } 8106 8107 QueuedTouch insertAt = this; 8108 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 8109 insertAt = insertAt.mNext; 8110 } 8111 other.mNext = insertAt.mNext; 8112 insertAt.mNext = other; 8113 return this; 8114 } 8115 } 8116 8117 /** 8118 * WebView handles touch events asynchronously since some events must be passed to WebKit 8119 * for potentially slower processing. TouchEventQueue serializes touch events regardless 8120 * of which path they take to ensure that no events are ever processed out of order 8121 * by WebView. 8122 */ 8123 private class TouchEventQueue { 8124 private long mNextTouchSequence = Long.MIN_VALUE + 1; 8125 private long mLastHandledTouchSequence = Long.MIN_VALUE; 8126 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 8127 8128 // Events waiting to be processed. 8129 private QueuedTouch mTouchEventQueue; 8130 8131 // Known events that are waiting on a response before being enqueued. 8132 private QueuedTouch mPreQueue; 8133 8134 // Pool of QueuedTouch objects saved for later use. 8135 private QueuedTouch mQueuedTouchRecycleBin; 8136 private int mQueuedTouchRecycleCount; 8137 8138 private long mLastEventTime = Long.MAX_VALUE; 8139 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 8140 8141 // milliseconds until we abandon hope of getting all of a previous gesture 8142 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 8143 8144 private QueuedTouch obtainQueuedTouch() { 8145 if (mQueuedTouchRecycleBin != null) { 8146 QueuedTouch result = mQueuedTouchRecycleBin; 8147 mQueuedTouchRecycleBin = result.mNext; 8148 mQueuedTouchRecycleCount--; 8149 return result; 8150 } 8151 return new QueuedTouch(); 8152 } 8153 8154 /** 8155 * Allow events with any currently missing sequence numbers to be skipped in processing. 8156 */ 8157 public void ignoreCurrentlyMissingEvents() { 8158 mIgnoreUntilSequence = mNextTouchSequence; 8159 8160 // Run any events we have available and complete, pre-queued or otherwise. 8161 runQueuedAndPreQueuedEvents(); 8162 } 8163 8164 private void runQueuedAndPreQueuedEvents() { 8165 QueuedTouch qd = mPreQueue; 8166 boolean fromPreQueue = true; 8167 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8168 handleQueuedTouch(qd); 8169 QueuedTouch recycleMe = qd; 8170 if (fromPreQueue) { 8171 mPreQueue = qd.mNext; 8172 } else { 8173 mTouchEventQueue = qd.mNext; 8174 } 8175 recycleQueuedTouch(recycleMe); 8176 mLastHandledTouchSequence++; 8177 8178 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 8179 long nextQueued = mTouchEventQueue != null ? 8180 mTouchEventQueue.mSequence : Long.MAX_VALUE; 8181 fromPreQueue = nextPre < nextQueued; 8182 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 8183 } 8184 } 8185 8186 /** 8187 * Add a TouchEventData to the pre-queue. 8188 * 8189 * An event in the pre-queue is an event that we know about that 8190 * has been sent to webkit, but that we haven't received back and 8191 * enqueued into the normal touch queue yet. If webkit ever times 8192 * out and we need to ignore currently missing events, we'll run 8193 * events from the pre-queue to patch the holes. 8194 * 8195 * @param ted TouchEventData to pre-queue 8196 */ 8197 public void preQueueTouchEventData(TouchEventData ted) { 8198 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 8199 if (mPreQueue == null) { 8200 mPreQueue = newTouch; 8201 } else { 8202 QueuedTouch insertionPoint = mPreQueue; 8203 while (insertionPoint.mNext != null && 8204 insertionPoint.mNext.mSequence < newTouch.mSequence) { 8205 insertionPoint = insertionPoint.mNext; 8206 } 8207 newTouch.mNext = insertionPoint.mNext; 8208 insertionPoint.mNext = newTouch; 8209 } 8210 } 8211 8212 private void recycleQueuedTouch(QueuedTouch qd) { 8213 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 8214 qd.mNext = mQueuedTouchRecycleBin; 8215 mQueuedTouchRecycleBin = qd; 8216 mQueuedTouchRecycleCount++; 8217 } 8218 } 8219 8220 /** 8221 * Reset the touch event queue. This will dump any pending events 8222 * and reset the sequence numbering. 8223 */ 8224 public void reset() { 8225 mNextTouchSequence = Long.MIN_VALUE + 1; 8226 mLastHandledTouchSequence = Long.MIN_VALUE; 8227 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 8228 while (mTouchEventQueue != null) { 8229 QueuedTouch recycleMe = mTouchEventQueue; 8230 mTouchEventQueue = mTouchEventQueue.mNext; 8231 recycleQueuedTouch(recycleMe); 8232 } 8233 while (mPreQueue != null) { 8234 QueuedTouch recycleMe = mPreQueue; 8235 mPreQueue = mPreQueue.mNext; 8236 recycleQueuedTouch(recycleMe); 8237 } 8238 } 8239 8240 /** 8241 * Return the next valid sequence number for tagging incoming touch events. 8242 * @return The next touch event sequence number 8243 */ 8244 public long nextTouchSequence() { 8245 return mNextTouchSequence++; 8246 } 8247 8248 /** 8249 * Enqueue a touch event in the form of TouchEventData. 8250 * The sequence number will be read from the mSequence field of the argument. 8251 * 8252 * If the touch event's sequence number is the next in line to be processed, it will 8253 * be handled before this method returns. Any subsequent events that have already 8254 * been queued will also be processed in their proper order. 8255 * 8256 * @param ted Touch data to be processed in order. 8257 * @return true if the event was processed before returning, false if it was just enqueued. 8258 */ 8259 public boolean enqueueTouchEvent(TouchEventData ted) { 8260 // Remove from the pre-queue if present 8261 QueuedTouch preQueue = mPreQueue; 8262 if (preQueue != null) { 8263 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 8264 // if it was present in the pre-queue, and removed from the pre-queue itself. 8265 if (preQueue.mSequence == ted.mSequence) { 8266 mPreQueue = preQueue.mNext; 8267 } else { 8268 QueuedTouch prev = preQueue; 8269 preQueue = null; 8270 while (prev.mNext != null) { 8271 if (prev.mNext.mSequence == ted.mSequence) { 8272 preQueue = prev.mNext; 8273 prev.mNext = preQueue.mNext; 8274 break; 8275 } else { 8276 prev = prev.mNext; 8277 } 8278 } 8279 } 8280 } 8281 8282 if (ted.mSequence < mLastHandledTouchSequence) { 8283 // Stale event and we already moved on; drop it. (Should not be common.) 8284 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 8285 " received from webcore; ignoring"); 8286 return false; 8287 } 8288 8289 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 8290 return false; 8291 } 8292 8293 // dropStaleGestures above might have fast-forwarded us to 8294 // an event we have already. 8295 runNextQueuedEvents(); 8296 8297 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 8298 if (preQueue != null) { 8299 recycleQueuedTouch(preQueue); 8300 preQueue = null; 8301 } 8302 handleQueuedTouchEventData(ted); 8303 8304 mLastHandledTouchSequence++; 8305 8306 // Do we have any more? Run them if so. 8307 runNextQueuedEvents(); 8308 } else { 8309 // Reuse the pre-queued object if we had it. 8310 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 8311 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8312 } 8313 return true; 8314 } 8315 8316 /** 8317 * Enqueue a touch event in the form of a MotionEvent from the framework. 8318 * 8319 * If the touch event's sequence number is the next in line to be processed, it will 8320 * be handled before this method returns. Any subsequent events that have already 8321 * been queued will also be processed in their proper order. 8322 * 8323 * @param ev MotionEvent to be processed in order 8324 */ 8325 public void enqueueTouchEvent(MotionEvent ev) { 8326 final long sequence = nextTouchSequence(); 8327 8328 if (dropStaleGestures(ev, sequence)) { 8329 return; 8330 } 8331 8332 // dropStaleGestures above might have fast-forwarded us to 8333 // an event we have already. 8334 runNextQueuedEvents(); 8335 8336 if (mLastHandledTouchSequence + 1 == sequence) { 8337 handleQueuedMotionEvent(ev); 8338 8339 mLastHandledTouchSequence++; 8340 8341 // Do we have any more? Run them if so. 8342 runNextQueuedEvents(); 8343 } else { 8344 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 8345 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8346 } 8347 } 8348 8349 private void runNextQueuedEvents() { 8350 QueuedTouch qd = mTouchEventQueue; 8351 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8352 handleQueuedTouch(qd); 8353 QueuedTouch recycleMe = qd; 8354 qd = qd.mNext; 8355 recycleQueuedTouch(recycleMe); 8356 mLastHandledTouchSequence++; 8357 } 8358 mTouchEventQueue = qd; 8359 } 8360 8361 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 8362 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 8363 // This is to make sure that we don't attempt to process a tap 8364 // or long press when webkit takes too long to get back to us. 8365 // The movement will be properly confirmed when we process the 8366 // enqueued event later. 8367 final int dx = Math.round(ev.getX()) - mLastTouchX; 8368 final int dy = Math.round(ev.getY()) - mLastTouchY; 8369 if (dx * dx + dy * dy > mTouchSlopSquare) { 8370 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 8371 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 8372 } 8373 } 8374 8375 if (mTouchEventQueue == null) { 8376 return sequence <= mLastHandledTouchSequence; 8377 } 8378 8379 // If we have a new down event and it's been a while since the last event 8380 // we saw, catch up as best we can and keep going. 8381 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 8382 long eventTime = ev.getEventTime(); 8383 long lastHandledEventTime = mLastEventTime; 8384 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 8385 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 8386 "Catching up."); 8387 runQueuedAndPreQueuedEvents(); 8388 8389 // Drop leftovers that we truly don't have. 8390 QueuedTouch qd = mTouchEventQueue; 8391 while (qd != null && qd.mSequence < sequence) { 8392 QueuedTouch recycleMe = qd; 8393 qd = qd.mNext; 8394 recycleQueuedTouch(recycleMe); 8395 } 8396 mTouchEventQueue = qd; 8397 mLastHandledTouchSequence = sequence - 1; 8398 } 8399 } 8400 8401 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 8402 QueuedTouch qd = mTouchEventQueue; 8403 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8404 QueuedTouch recycleMe = qd; 8405 qd = qd.mNext; 8406 recycleQueuedTouch(recycleMe); 8407 } 8408 mTouchEventQueue = qd; 8409 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 8410 } 8411 8412 if (mPreQueue != null) { 8413 // Drop stale prequeued events 8414 QueuedTouch qd = mPreQueue; 8415 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8416 QueuedTouch recycleMe = qd; 8417 qd = qd.mNext; 8418 recycleQueuedTouch(recycleMe); 8419 } 8420 mPreQueue = qd; 8421 } 8422 8423 return sequence <= mLastHandledTouchSequence; 8424 } 8425 8426 private void handleQueuedTouch(QueuedTouch qt) { 8427 if (qt.mTed != null) { 8428 handleQueuedTouchEventData(qt.mTed); 8429 } else { 8430 handleQueuedMotionEvent(qt.mEvent); 8431 qt.mEvent.recycle(); 8432 } 8433 } 8434 8435 private void handleQueuedMotionEvent(MotionEvent ev) { 8436 mLastEventTime = ev.getEventTime(); 8437 int action = ev.getActionMasked(); 8438 if (ev.getPointerCount() > 1) { // Multi-touch 8439 handleMultiTouchInWebView(ev); 8440 } else { 8441 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 8442 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 8443 // ScaleGestureDetector needs a consistent event stream to operate properly. 8444 // It won't take any action with fewer than two pointers, but it needs to 8445 // update internal bookkeeping state. 8446 detector.onTouchEvent(ev); 8447 } 8448 8449 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 8450 } 8451 } 8452 8453 private void handleQueuedTouchEventData(TouchEventData ted) { 8454 if (ted.mMotionEvent != null) { 8455 mLastEventTime = ted.mMotionEvent.getEventTime(); 8456 } 8457 if (!ted.mReprocess) { 8458 if (ted.mAction == MotionEvent.ACTION_DOWN 8459 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 8460 // if prevent default is called from WebCore, UI 8461 // will not handle the rest of the touch events any 8462 // more. 8463 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8464 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 8465 } else if (ted.mAction == MotionEvent.ACTION_MOVE 8466 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 8467 // the return for the first ACTION_MOVE will decide 8468 // whether UI will handle touch or not. Currently no 8469 // support for alternating prevent default 8470 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8471 : PREVENT_DEFAULT_NO; 8472 } 8473 if (mPreventDefault == PREVENT_DEFAULT_YES) { 8474 mTouchHighlightRegion.setEmpty(); 8475 } 8476 } else { 8477 if (ted.mPoints.length > 1) { // multi-touch 8478 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 8479 mPreventDefault = PREVENT_DEFAULT_NO; 8480 handleMultiTouchInWebView(ted.mMotionEvent); 8481 } else { 8482 mPreventDefault = PREVENT_DEFAULT_YES; 8483 } 8484 return; 8485 } 8486 8487 // prevent default is not called in WebCore, so the 8488 // message needs to be reprocessed in UI 8489 if (!ted.mNativeResult) { 8490 // Following is for single touch. 8491 switch (ted.mAction) { 8492 case MotionEvent.ACTION_DOWN: 8493 mLastDeferTouchX = ted.mPointsInView[0].x; 8494 mLastDeferTouchY = ted.mPointsInView[0].y; 8495 mDeferTouchMode = TOUCH_INIT_MODE; 8496 break; 8497 case MotionEvent.ACTION_MOVE: { 8498 // no snapping in defer process 8499 int x = ted.mPointsInView[0].x; 8500 int y = ted.mPointsInView[0].y; 8501 8502 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 8503 mDeferTouchMode = TOUCH_DRAG_MODE; 8504 mLastDeferTouchX = x; 8505 mLastDeferTouchY = y; 8506 startScrollingLayer(x, y); 8507 startDrag(); 8508 } 8509 int deltaX = pinLocX((int) (mScrollX 8510 + mLastDeferTouchX - x)) 8511 - mScrollX; 8512 int deltaY = pinLocY((int) (mScrollY 8513 + mLastDeferTouchY - y)) 8514 - mScrollY; 8515 doDrag(deltaX, deltaY); 8516 if (deltaX != 0) mLastDeferTouchX = x; 8517 if (deltaY != 0) mLastDeferTouchY = y; 8518 break; 8519 } 8520 case MotionEvent.ACTION_UP: 8521 case MotionEvent.ACTION_CANCEL: 8522 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 8523 // no fling in defer process 8524 mScroller.springBack(mScrollX, mScrollY, 0, 8525 computeMaxScrollX(), 0, 8526 computeMaxScrollY()); 8527 invalidate(); 8528 WebViewCore.resumePriority(); 8529 WebViewCore.resumeUpdatePicture(mWebViewCore); 8530 } 8531 mDeferTouchMode = TOUCH_DONE_MODE; 8532 break; 8533 case WebViewCore.ACTION_DOUBLETAP: 8534 // doDoubleTap() needs mLastTouchX/Y as anchor 8535 mLastDeferTouchX = ted.mPointsInView[0].x; 8536 mLastDeferTouchY = ted.mPointsInView[0].y; 8537 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 8538 mDeferTouchMode = TOUCH_DONE_MODE; 8539 break; 8540 case WebViewCore.ACTION_LONGPRESS: 8541 HitTestResult hitTest = getHitTestResult(); 8542 if (hitTest != null && hitTest.mType 8543 != HitTestResult.UNKNOWN_TYPE) { 8544 performLongClick(); 8545 } 8546 mDeferTouchMode = TOUCH_DONE_MODE; 8547 break; 8548 } 8549 } 8550 } 8551 } 8552 } 8553 8554 //------------------------------------------------------------------------- 8555 // Methods can be called from a separate thread, like WebViewCore 8556 // If it needs to call the View system, it has to send message. 8557 //------------------------------------------------------------------------- 8558 8559 /** 8560 * General handler to receive message coming from webkit thread 8561 */ 8562 class PrivateHandler extends Handler { 8563 @Override 8564 public void handleMessage(Message msg) { 8565 // exclude INVAL_RECT_MSG_ID since it is frequently output 8566 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 8567 if (msg.what >= FIRST_PRIVATE_MSG_ID 8568 && msg.what <= LAST_PRIVATE_MSG_ID) { 8569 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 8570 - FIRST_PRIVATE_MSG_ID]); 8571 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 8572 && msg.what <= LAST_PACKAGE_MSG_ID) { 8573 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 8574 - FIRST_PACKAGE_MSG_ID]); 8575 } else { 8576 Log.v(LOGTAG, Integer.toString(msg.what)); 8577 } 8578 } 8579 if (mWebViewCore == null) { 8580 // after WebView's destroy() is called, skip handling messages. 8581 return; 8582 } 8583 if (mBlockWebkitViewMessages 8584 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 8585 // Blocking messages from webkit 8586 return; 8587 } 8588 switch (msg.what) { 8589 case REMEMBER_PASSWORD: { 8590 mDatabase.setUsernamePassword( 8591 msg.getData().getString("host"), 8592 msg.getData().getString("username"), 8593 msg.getData().getString("password")); 8594 ((Message) msg.obj).sendToTarget(); 8595 break; 8596 } 8597 case NEVER_REMEMBER_PASSWORD: { 8598 mDatabase.setUsernamePassword( 8599 msg.getData().getString("host"), null, null); 8600 ((Message) msg.obj).sendToTarget(); 8601 break; 8602 } 8603 case PREVENT_DEFAULT_TIMEOUT: { 8604 // if timeout happens, cancel it so that it won't block UI 8605 // to continue handling touch events 8606 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8607 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8608 || (msg.arg1 == MotionEvent.ACTION_MOVE 8609 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8610 cancelWebCoreTouchEvent( 8611 viewToContentX(mLastTouchX + mScrollX), 8612 viewToContentY(mLastTouchY + mScrollY), 8613 true); 8614 } 8615 break; 8616 } 8617 case SCROLL_SELECT_TEXT: { 8618 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8619 mSentAutoScrollMessage = false; 8620 break; 8621 } 8622 if (mCurrentScrollingLayerId == 0) { 8623 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8624 } else { 8625 scrollLayerTo(mScrollingLayerRect.left + mAutoScrollX, 8626 mScrollingLayerRect.top + mAutoScrollY); 8627 } 8628 sendEmptyMessageDelayed( 8629 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8630 break; 8631 } 8632 case UPDATE_SELECTION: { 8633 if (mTouchMode == TOUCH_INIT_MODE 8634 || mTouchMode == TOUCH_SHORTPRESS_MODE 8635 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 8636 updateSelection(); 8637 } 8638 break; 8639 } 8640 case SWITCH_TO_SHORTPRESS: { 8641 if (mTouchMode == TOUCH_INIT_MODE) { 8642 if (!sDisableNavcache 8643 && mPreventDefault != PREVENT_DEFAULT_YES) { 8644 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8645 updateSelection(); 8646 } else { 8647 // set to TOUCH_SHORTPRESS_MODE so that it won't 8648 // trigger double tap any more 8649 mTouchMode = TOUCH_SHORTPRESS_MODE; 8650 } 8651 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8652 mTouchMode = TOUCH_DONE_MODE; 8653 } 8654 break; 8655 } 8656 case SWITCH_TO_LONGPRESS: { 8657 if (sDisableNavcache) { 8658 removeTouchHighlight(); 8659 } 8660 if (inFullScreenMode() || mDeferTouchProcess) { 8661 TouchEventData ted = new TouchEventData(); 8662 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8663 ted.mIds = new int[1]; 8664 ted.mIds[0] = 0; 8665 ted.mPoints = new Point[1]; 8666 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8667 viewToContentY(mLastTouchY + mScrollY)); 8668 ted.mPointsInView = new Point[1]; 8669 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8670 // metaState for long press is tricky. Should it be the 8671 // state when the press started or when the press was 8672 // released? Or some intermediary key state? For 8673 // simplicity for now, we don't set it. 8674 ted.mMetaState = 0; 8675 ted.mReprocess = mDeferTouchProcess; 8676 ted.mNativeLayer = nativeScrollableLayer( 8677 ted.mPoints[0].x, ted.mPoints[0].y, 8678 ted.mNativeLayerRect, null); 8679 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8680 mTouchEventQueue.preQueueTouchEventData(ted); 8681 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8682 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8683 mTouchMode = TOUCH_DONE_MODE; 8684 performLongClick(); 8685 } 8686 break; 8687 } 8688 case RELEASE_SINGLE_TAP: { 8689 doShortPress(); 8690 break; 8691 } 8692 case SCROLL_TO_MSG_ID: { 8693 // arg1 = animate, arg2 = onlyIfImeIsShowing 8694 // obj = Point(x, y) 8695 if (msg.arg2 == 1) { 8696 // This scroll is intended to bring the textfield into 8697 // view, but is only necessary if the IME is showing 8698 InputMethodManager imm = InputMethodManager.peekInstance(); 8699 if (imm == null || !imm.isAcceptingText() 8700 || (!imm.isActive(WebView.this) && (!inEditingMode() 8701 || !imm.isActive(mWebTextView)))) { 8702 break; 8703 } 8704 } 8705 final Point p = (Point) msg.obj; 8706 if (msg.arg1 == 1) { 8707 spawnContentScrollTo(p.x, p.y); 8708 } else { 8709 setContentScrollTo(p.x, p.y); 8710 } 8711 break; 8712 } 8713 case UPDATE_ZOOM_RANGE: { 8714 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8715 // mScrollX contains the new minPrefWidth 8716 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8717 break; 8718 } 8719 case UPDATE_ZOOM_DENSITY: { 8720 final float density = (Float) msg.obj; 8721 mZoomManager.updateDefaultZoomDensity(density); 8722 break; 8723 } 8724 case REPLACE_BASE_CONTENT: { 8725 nativeReplaceBaseContent(msg.arg1); 8726 break; 8727 } 8728 case NEW_PICTURE_MSG_ID: { 8729 // called for new content 8730 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8731 setNewPicture(draw, true); 8732 break; 8733 } 8734 case WEBCORE_INITIALIZED_MSG_ID: 8735 // nativeCreate sets mNativeClass to a non-zero value 8736 String drawableDir = BrowserFrame.getRawResFilename( 8737 BrowserFrame.DRAWABLEDIR, mContext); 8738 WindowManager windowManager = 8739 (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE); 8740 Display display = windowManager.getDefaultDisplay(); 8741 nativeCreate(msg.arg1, drawableDir, 8742 ActivityManager.isHighEndGfx(display)); 8743 if (mDelaySetPicture != null) { 8744 setNewPicture(mDelaySetPicture, true); 8745 mDelaySetPicture = null; 8746 } 8747 if (mIsPaused) { 8748 nativeSetPauseDrawing(mNativeClass, true); 8749 } 8750 break; 8751 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8752 // Make sure that the textfield is currently focused 8753 // and representing the same node as the pointer. 8754 if (inEditingMode() && 8755 mWebTextView.isSameTextField(msg.arg1)) { 8756 if (msg.arg2 == mTextGeneration) { 8757 String text = (String) msg.obj; 8758 if (null == text) { 8759 text = ""; 8760 } 8761 mWebTextView.setTextAndKeepSelection(text); 8762 } 8763 } 8764 break; 8765 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8766 displaySoftKeyboard(true); 8767 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8768 case UPDATE_TEXT_SELECTION_MSG_ID: 8769 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8770 (WebViewCore.TextSelectionData) msg.obj); 8771 break; 8772 case FORM_DID_BLUR: 8773 if (inEditingMode() 8774 && mWebTextView.isSameTextField(msg.arg1)) { 8775 hideSoftKeyboard(); 8776 } 8777 break; 8778 case RETURN_LABEL: 8779 if (inEditingMode() 8780 && mWebTextView.isSameTextField(msg.arg1)) { 8781 mWebTextView.setHint((String) msg.obj); 8782 InputMethodManager imm 8783 = InputMethodManager.peekInstance(); 8784 // The hint is propagated to the IME in 8785 // onCreateInputConnection. If the IME is already 8786 // active, restart it so that its hint text is updated. 8787 if (imm != null && imm.isActive(mWebTextView)) { 8788 imm.restartInput(mWebTextView); 8789 } 8790 } 8791 break; 8792 case UNHANDLED_NAV_KEY: 8793 navHandledKey(msg.arg1, 1, false, 0); 8794 break; 8795 case UPDATE_TEXT_ENTRY_MSG_ID: 8796 // this is sent after finishing resize in WebViewCore. Make 8797 // sure the text edit box is still on the screen. 8798 if (inEditingMode() && nativeCursorIsTextInput()) { 8799 updateWebTextViewPosition(); 8800 } 8801 break; 8802 case CLEAR_TEXT_ENTRY: 8803 clearTextEntry(); 8804 break; 8805 case INVAL_RECT_MSG_ID: { 8806 Rect r = (Rect)msg.obj; 8807 if (r == null) { 8808 invalidate(); 8809 } else { 8810 // we need to scale r from content into view coords, 8811 // which viewInvalidate() does for us 8812 viewInvalidate(r.left, r.top, r.right, r.bottom); 8813 } 8814 break; 8815 } 8816 case REQUEST_FORM_DATA: 8817 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8818 if (mWebTextView.isSameTextField(msg.arg1)) { 8819 mWebTextView.setAdapterCustom(adapter); 8820 } 8821 break; 8822 8823 case LONG_PRESS_CENTER: 8824 // as this is shared by keydown and trackballdown, reset all 8825 // the states 8826 mGotCenterDown = false; 8827 mTrackballDown = false; 8828 performLongClick(); 8829 break; 8830 8831 case WEBCORE_NEED_TOUCH_EVENTS: 8832 mForwardTouchEvents = (msg.arg1 != 0); 8833 break; 8834 8835 case PREVENT_TOUCH_ID: 8836 if (inFullScreenMode()) { 8837 break; 8838 } 8839 TouchEventData ted = (TouchEventData) msg.obj; 8840 8841 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8842 // WebCore is responding to us; remove pending timeout. 8843 // It will be re-posted when needed. 8844 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8845 } 8846 break; 8847 8848 case REQUEST_KEYBOARD: 8849 if (msg.arg1 == 0) { 8850 hideSoftKeyboard(); 8851 } else { 8852 displaySoftKeyboard(false); 8853 } 8854 break; 8855 8856 case FIND_AGAIN: 8857 // Ignore if find has been dismissed. 8858 if (mFindIsUp && mFindCallback != null) { 8859 mFindCallback.findAll(); 8860 } 8861 break; 8862 8863 case DRAG_HELD_MOTIONLESS: 8864 mHeldMotionless = MOTIONLESS_TRUE; 8865 invalidate(); 8866 // fall through to keep scrollbars awake 8867 8868 case AWAKEN_SCROLL_BARS: 8869 if (mTouchMode == TOUCH_DRAG_MODE 8870 && mHeldMotionless == MOTIONLESS_TRUE) { 8871 awakenScrollBars(ViewConfiguration 8872 .getScrollDefaultDelay(), false); 8873 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8874 .obtainMessage(AWAKEN_SCROLL_BARS), 8875 ViewConfiguration.getScrollDefaultDelay()); 8876 } 8877 break; 8878 8879 case DO_MOTION_UP: 8880 doMotionUp(msg.arg1, msg.arg2); 8881 break; 8882 8883 case SCREEN_ON: 8884 setKeepScreenOn(msg.arg1 == 1); 8885 break; 8886 8887 case ENTER_FULLSCREEN_VIDEO: 8888 int layerId = msg.arg1; 8889 8890 String url = (String) msg.obj; 8891 if (mHTML5VideoViewProxy != null) { 8892 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8893 } 8894 break; 8895 8896 case EXIT_FULLSCREEN_VIDEO: 8897 if (mHTML5VideoViewProxy != null) { 8898 mHTML5VideoViewProxy.exitFullScreenVideo(); 8899 } 8900 break; 8901 8902 case SHOW_FULLSCREEN: { 8903 View view = (View) msg.obj; 8904 int orientation = msg.arg1; 8905 int npp = msg.arg2; 8906 8907 if (inFullScreenMode()) { 8908 Log.w(LOGTAG, "Should not have another full screen."); 8909 dismissFullScreenMode(); 8910 } 8911 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 8912 mFullScreenHolder.setContentView(view); 8913 mFullScreenHolder.show(); 8914 invalidate(); 8915 8916 break; 8917 } 8918 case HIDE_FULLSCREEN: 8919 dismissFullScreenMode(); 8920 break; 8921 8922 case DOM_FOCUS_CHANGED: 8923 if (inEditingMode()) { 8924 nativeClearCursor(); 8925 rebuildWebTextView(); 8926 } 8927 break; 8928 8929 case SHOW_RECT_MSG_ID: { 8930 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8931 int x = mScrollX; 8932 int left = contentToViewX(data.mLeft); 8933 int width = contentToViewDimension(data.mWidth); 8934 int maxWidth = contentToViewDimension(data.mContentWidth); 8935 int viewWidth = getViewWidth(); 8936 if (width < viewWidth) { 8937 // center align 8938 x += left + width / 2 - mScrollX - viewWidth / 2; 8939 } else { 8940 x += (int) (left + data.mXPercentInDoc * width 8941 - mScrollX - data.mXPercentInView * viewWidth); 8942 } 8943 if (DebugFlags.WEB_VIEW) { 8944 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8945 width + ",maxWidth=" + maxWidth + 8946 ",viewWidth=" + viewWidth + ",x=" 8947 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8948 ",xPercentInView=" + data.mXPercentInView+ ")"); 8949 } 8950 // use the passing content width to cap x as the current 8951 // mContentWidth may not be updated yet 8952 x = Math.max(0, 8953 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8954 int top = contentToViewY(data.mTop); 8955 int height = contentToViewDimension(data.mHeight); 8956 int maxHeight = contentToViewDimension(data.mContentHeight); 8957 int viewHeight = getViewHeight(); 8958 int y = (int) (top + data.mYPercentInDoc * height - 8959 data.mYPercentInView * viewHeight); 8960 if (DebugFlags.WEB_VIEW) { 8961 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8962 height + ",maxHeight=" + maxHeight + 8963 ",viewHeight=" + viewHeight + ",y=" 8964 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8965 ",yPercentInView=" + data.mYPercentInView+ ")"); 8966 } 8967 // use the passing content height to cap y as the current 8968 // mContentHeight may not be updated yet 8969 y = Math.max(0, 8970 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8971 // We need to take into account the visible title height 8972 // when scrolling since y is an absolute view position. 8973 y = Math.max(0, y - getVisibleTitleHeightImpl()); 8974 scrollTo(x, y); 8975 } 8976 break; 8977 8978 case CENTER_FIT_RECT: 8979 centerFitRect((Rect)msg.obj); 8980 break; 8981 8982 case SET_SCROLLBAR_MODES: 8983 mHorizontalScrollBarMode = msg.arg1; 8984 mVerticalScrollBarMode = msg.arg2; 8985 break; 8986 8987 case SELECTION_STRING_CHANGED: 8988 if (mAccessibilityInjector != null) { 8989 String selectionString = (String) msg.obj; 8990 mAccessibilityInjector.onSelectionStringChange(selectionString); 8991 } 8992 break; 8993 8994 case HIT_TEST_RESULT: 8995 WebKitHitTest hit = (WebKitHitTest) msg.obj; 8996 mFocusedNode = hit; 8997 setTouchHighlightRects(hit); 8998 if (hit == null) { 8999 mInitialHitTestResult = null; 9000 } else { 9001 mInitialHitTestResult = new HitTestResult(); 9002 if (hit.mLinkUrl != null) { 9003 mInitialHitTestResult.mType = HitTestResult.SRC_ANCHOR_TYPE; 9004 mInitialHitTestResult.mExtra = hit.mLinkUrl; 9005 if (hit.mImageUrl != null) { 9006 mInitialHitTestResult.mType = HitTestResult.SRC_IMAGE_ANCHOR_TYPE; 9007 mInitialHitTestResult.mExtra = hit.mImageUrl; 9008 } 9009 } else if (hit.mImageUrl != null) { 9010 mInitialHitTestResult.mType = HitTestResult.IMAGE_TYPE; 9011 mInitialHitTestResult.mExtra = hit.mImageUrl; 9012 } else if (hit.mEditable) { 9013 mInitialHitTestResult.mType = HitTestResult.EDIT_TEXT_TYPE; 9014 } 9015 } 9016 break; 9017 9018 case SAVE_WEBARCHIVE_FINISHED: 9019 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 9020 if (saveMessage.mCallback != null) { 9021 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 9022 } 9023 break; 9024 9025 case SET_AUTOFILLABLE: 9026 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 9027 if (mWebTextView != null) { 9028 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 9029 rebuildWebTextView(); 9030 } 9031 break; 9032 9033 case AUTOFILL_COMPLETE: 9034 if (mWebTextView != null) { 9035 // Clear the WebTextView adapter when AutoFill finishes 9036 // so that the drop down gets cleared. 9037 mWebTextView.setAdapterCustom(null); 9038 } 9039 break; 9040 9041 case SELECT_AT: 9042 nativeSelectAt(msg.arg1, msg.arg2); 9043 break; 9044 9045 case COPY_TO_CLIPBOARD: 9046 copyToClipboard((String) msg.obj); 9047 break; 9048 9049 case INIT_EDIT_FIELD: 9050 if (mInputConnection != null) { 9051 mTextGeneration = 0; 9052 String text = (String)msg.obj; 9053 mInputConnection.beginBatchEdit(); 9054 Editable editable = mInputConnection.getEditable(); 9055 editable.replace(0, editable.length(), text); 9056 int start = msg.arg1; 9057 int end = msg.arg2; 9058 mInputConnection.setComposingRegion(end, end); 9059 mInputConnection.setSelection(start, end); 9060 mInputConnection.endBatchEdit(); 9061 } 9062 break; 9063 9064 case REPLACE_TEXT:{ 9065 String text = (String)msg.obj; 9066 int start = msg.arg1; 9067 int end = msg.arg2; 9068 int cursorPosition = start + text.length(); 9069 replaceTextfieldText(start, end, text, 9070 cursorPosition, cursorPosition); 9071 break; 9072 } 9073 9074 default: 9075 super.handleMessage(msg); 9076 break; 9077 } 9078 } 9079 } 9080 9081 private void setTouchHighlightRects(WebKitHitTest hit) { 9082 Rect[] rects = hit != null ? hit.mTouchRects : null; 9083 if (!mTouchHighlightRegion.isEmpty()) { 9084 invalidate(mTouchHighlightRegion.getBounds()); 9085 mTouchHighlightRegion.setEmpty(); 9086 } 9087 if (rects != null) { 9088 mTouchHightlightPaint.setColor(hit.mTapHighlightColor); 9089 for (Rect rect : rects) { 9090 Rect viewRect = contentToViewRect(rect); 9091 // some sites, like stories in nytimes.com, set 9092 // mouse event handler in the top div. It is not 9093 // user friendly to highlight the div if it covers 9094 // more than half of the screen. 9095 if (viewRect.width() < getWidth() >> 1 9096 || viewRect.height() < getHeight() >> 1) { 9097 mTouchHighlightRegion.union(viewRect); 9098 } else { 9099 Log.w(LOGTAG, "Skip the huge selection rect:" 9100 + viewRect); 9101 } 9102 } 9103 invalidate(mTouchHighlightRegion.getBounds()); 9104 } 9105 } 9106 9107 /** @hide Called by JNI when pages are swapped (only occurs with hardware 9108 * acceleration) */ 9109 protected void pageSwapCallback(boolean notifyAnimationStarted) { 9110 if (inEditingMode()) { 9111 didUpdateWebTextViewDimensions(ANYWHERE); 9112 } 9113 if (notifyAnimationStarted) { 9114 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 9115 } 9116 } 9117 9118 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 9119 if (mNativeClass == 0) { 9120 if (mDelaySetPicture != null) { 9121 throw new IllegalStateException("Tried to setNewPicture with" 9122 + " a delay picture already set! (memory leak)"); 9123 } 9124 // Not initialized yet, delay set 9125 mDelaySetPicture = draw; 9126 return; 9127 } 9128 WebViewCore.ViewState viewState = draw.mViewState; 9129 boolean isPictureAfterFirstLayout = viewState != null; 9130 9131 if (updateBaseLayer) { 9132 // Request a callback on pageSwap (to reposition the webtextview) 9133 boolean registerPageSwapCallback = 9134 !mZoomManager.isFixedLengthAnimationInProgress() && inEditingMode(); 9135 9136 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 9137 getSettings().getShowVisualIndicator(), 9138 isPictureAfterFirstLayout, registerPageSwapCallback); 9139 } 9140 final Point viewSize = draw.mViewSize; 9141 // We update the layout (i.e. request a layout from the 9142 // view system) if the last view size that we sent to 9143 // WebCore matches the view size of the picture we just 9144 // received in the fixed dimension. 9145 final boolean updateLayout = viewSize.x == mLastWidthSent 9146 && viewSize.y == mLastHeightSent; 9147 // Don't send scroll event for picture coming from webkit, 9148 // since the new picture may cause a scroll event to override 9149 // the saved history scroll position. 9150 mSendScrollEvent = false; 9151 recordNewContentSize(draw.mContentSize.x, 9152 draw.mContentSize.y, updateLayout); 9153 if (isPictureAfterFirstLayout) { 9154 // Reset the last sent data here since dealing with new page. 9155 mLastWidthSent = 0; 9156 mZoomManager.onFirstLayout(draw); 9157 int scrollX = viewState.mShouldStartScrolledRight 9158 ? getContentWidth() : viewState.mScrollX; 9159 int scrollY = viewState.mScrollY; 9160 setContentScrollTo(scrollX, scrollY); 9161 if (!mDrawHistory) { 9162 // As we are on a new page, remove the WebTextView. This 9163 // is necessary for page loads driven by webkit, and in 9164 // particular when the user was on a password field, so 9165 // the WebTextView was visible. 9166 clearTextEntry(); 9167 } 9168 } 9169 mSendScrollEvent = true; 9170 9171 if (DebugFlags.WEB_VIEW) { 9172 Rect b = draw.mInvalRegion.getBounds(); 9173 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 9174 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 9175 } 9176 invalidateContentRect(draw.mInvalRegion.getBounds()); 9177 9178 if (mPictureListener != null) { 9179 mPictureListener.onNewPicture(WebView.this, capturePicture()); 9180 } 9181 9182 // update the zoom information based on the new picture 9183 mZoomManager.onNewPicture(draw); 9184 9185 if (draw.mFocusSizeChanged && inEditingMode()) { 9186 mFocusSizeChanged = true; 9187 } 9188 if (isPictureAfterFirstLayout) { 9189 mViewManager.postReadyToDrawAll(); 9190 } 9191 } 9192 9193 /** 9194 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 9195 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 9196 */ 9197 private void updateTextSelectionFromMessage(int nodePointer, 9198 int textGeneration, WebViewCore.TextSelectionData data) { 9199 if (textGeneration == mTextGeneration) { 9200 if (inEditingMode() 9201 && mWebTextView.isSameTextField(nodePointer)) { 9202 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 9203 } else if (mInputConnection != null){ 9204 mInputConnection.setSelection(data.mStart, data.mEnd); 9205 } 9206 } 9207 } 9208 9209 // Class used to use a dropdown for a <select> element 9210 private class InvokeListBox implements Runnable { 9211 // Whether the listbox allows multiple selection. 9212 private boolean mMultiple; 9213 // Passed in to a list with multiple selection to tell 9214 // which items are selected. 9215 private int[] mSelectedArray; 9216 // Passed in to a list with single selection to tell 9217 // where the initial selection is. 9218 private int mSelection; 9219 9220 private Container[] mContainers; 9221 9222 // Need these to provide stable ids to my ArrayAdapter, 9223 // which normally does not have stable ids. (Bug 1250098) 9224 private class Container extends Object { 9225 /** 9226 * Possible values for mEnabled. Keep in sync with OptionStatus in 9227 * WebViewCore.cpp 9228 */ 9229 final static int OPTGROUP = -1; 9230 final static int OPTION_DISABLED = 0; 9231 final static int OPTION_ENABLED = 1; 9232 9233 String mString; 9234 int mEnabled; 9235 int mId; 9236 9237 @Override 9238 public String toString() { 9239 return mString; 9240 } 9241 } 9242 9243 /** 9244 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 9245 * and allow filtering. 9246 */ 9247 private class MyArrayListAdapter extends ArrayAdapter<Container> { 9248 public MyArrayListAdapter() { 9249 super(mContext, 9250 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 9251 com.android.internal.R.layout.webview_select_singlechoice, 9252 mContainers); 9253 } 9254 9255 @Override 9256 public View getView(int position, View convertView, 9257 ViewGroup parent) { 9258 // Always pass in null so that we will get a new CheckedTextView 9259 // Otherwise, an item which was previously used as an <optgroup> 9260 // element (i.e. has no check), could get used as an <option> 9261 // element, which needs a checkbox/radio, but it would not have 9262 // one. 9263 convertView = super.getView(position, null, parent); 9264 Container c = item(position); 9265 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 9266 // ListView does not draw dividers between disabled and 9267 // enabled elements. Use a LinearLayout to provide dividers 9268 LinearLayout layout = new LinearLayout(mContext); 9269 layout.setOrientation(LinearLayout.VERTICAL); 9270 if (position > 0) { 9271 View dividerTop = new View(mContext); 9272 dividerTop.setBackgroundResource( 9273 android.R.drawable.divider_horizontal_bright); 9274 layout.addView(dividerTop); 9275 } 9276 9277 if (Container.OPTGROUP == c.mEnabled) { 9278 // Currently select_dialog_multichoice uses CheckedTextViews. 9279 // If that changes, the class cast will no longer be valid. 9280 if (mMultiple) { 9281 Assert.assertTrue(convertView instanceof CheckedTextView); 9282 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 9283 } 9284 } else { 9285 // c.mEnabled == Container.OPTION_DISABLED 9286 // Draw the disabled element in a disabled state. 9287 convertView.setEnabled(false); 9288 } 9289 9290 layout.addView(convertView); 9291 if (position < getCount() - 1) { 9292 View dividerBottom = new View(mContext); 9293 dividerBottom.setBackgroundResource( 9294 android.R.drawable.divider_horizontal_bright); 9295 layout.addView(dividerBottom); 9296 } 9297 return layout; 9298 } 9299 return convertView; 9300 } 9301 9302 @Override 9303 public boolean hasStableIds() { 9304 // AdapterView's onChanged method uses this to determine whether 9305 // to restore the old state. Return false so that the old (out 9306 // of date) state does not replace the new, valid state. 9307 return false; 9308 } 9309 9310 private Container item(int position) { 9311 if (position < 0 || position >= getCount()) { 9312 return null; 9313 } 9314 return getItem(position); 9315 } 9316 9317 @Override 9318 public long getItemId(int position) { 9319 Container item = item(position); 9320 if (item == null) { 9321 return -1; 9322 } 9323 return item.mId; 9324 } 9325 9326 @Override 9327 public boolean areAllItemsEnabled() { 9328 return false; 9329 } 9330 9331 @Override 9332 public boolean isEnabled(int position) { 9333 Container item = item(position); 9334 if (item == null) { 9335 return false; 9336 } 9337 return Container.OPTION_ENABLED == item.mEnabled; 9338 } 9339 } 9340 9341 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 9342 mMultiple = true; 9343 mSelectedArray = selected; 9344 9345 int length = array.length; 9346 mContainers = new Container[length]; 9347 for (int i = 0; i < length; i++) { 9348 mContainers[i] = new Container(); 9349 mContainers[i].mString = array[i]; 9350 mContainers[i].mEnabled = enabled[i]; 9351 mContainers[i].mId = i; 9352 } 9353 } 9354 9355 private InvokeListBox(String[] array, int[] enabled, int selection) { 9356 mSelection = selection; 9357 mMultiple = false; 9358 9359 int length = array.length; 9360 mContainers = new Container[length]; 9361 for (int i = 0; i < length; i++) { 9362 mContainers[i] = new Container(); 9363 mContainers[i].mString = array[i]; 9364 mContainers[i].mEnabled = enabled[i]; 9365 mContainers[i].mId = i; 9366 } 9367 } 9368 9369 /* 9370 * Whenever the data set changes due to filtering, this class ensures 9371 * that the checked item remains checked. 9372 */ 9373 private class SingleDataSetObserver extends DataSetObserver { 9374 private long mCheckedId; 9375 private ListView mListView; 9376 private Adapter mAdapter; 9377 9378 /* 9379 * Create a new observer. 9380 * @param id The ID of the item to keep checked. 9381 * @param l ListView for getting and clearing the checked states 9382 * @param a Adapter for getting the IDs 9383 */ 9384 public SingleDataSetObserver(long id, ListView l, Adapter a) { 9385 mCheckedId = id; 9386 mListView = l; 9387 mAdapter = a; 9388 } 9389 9390 @Override 9391 public void onChanged() { 9392 // The filter may have changed which item is checked. Find the 9393 // item that the ListView thinks is checked. 9394 int position = mListView.getCheckedItemPosition(); 9395 long id = mAdapter.getItemId(position); 9396 if (mCheckedId != id) { 9397 // Clear the ListView's idea of the checked item, since 9398 // it is incorrect 9399 mListView.clearChoices(); 9400 // Search for mCheckedId. If it is in the filtered list, 9401 // mark it as checked 9402 int count = mAdapter.getCount(); 9403 for (int i = 0; i < count; i++) { 9404 if (mAdapter.getItemId(i) == mCheckedId) { 9405 mListView.setItemChecked(i, true); 9406 break; 9407 } 9408 } 9409 } 9410 } 9411 } 9412 9413 @Override 9414 public void run() { 9415 final ListView listView = (ListView) LayoutInflater.from(mContext) 9416 .inflate(com.android.internal.R.layout.select_dialog, null); 9417 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 9418 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 9419 .setView(listView).setCancelable(true) 9420 .setInverseBackgroundForced(true); 9421 9422 if (mMultiple) { 9423 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 9424 @Override 9425 public void onClick(DialogInterface dialog, int which) { 9426 mWebViewCore.sendMessage( 9427 EventHub.LISTBOX_CHOICES, 9428 adapter.getCount(), 0, 9429 listView.getCheckedItemPositions()); 9430 }}); 9431 b.setNegativeButton(android.R.string.cancel, 9432 new DialogInterface.OnClickListener() { 9433 @Override 9434 public void onClick(DialogInterface dialog, int which) { 9435 mWebViewCore.sendMessage( 9436 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9437 }}); 9438 } 9439 mListBoxDialog = b.create(); 9440 listView.setAdapter(adapter); 9441 listView.setFocusableInTouchMode(true); 9442 // There is a bug (1250103) where the checks in a ListView with 9443 // multiple items selected are associated with the positions, not 9444 // the ids, so the items do not properly retain their checks when 9445 // filtered. Do not allow filtering on multiple lists until 9446 // that bug is fixed. 9447 9448 listView.setTextFilterEnabled(!mMultiple); 9449 if (mMultiple) { 9450 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 9451 int length = mSelectedArray.length; 9452 for (int i = 0; i < length; i++) { 9453 listView.setItemChecked(mSelectedArray[i], true); 9454 } 9455 } else { 9456 listView.setOnItemClickListener(new OnItemClickListener() { 9457 @Override 9458 public void onItemClick(AdapterView<?> parent, View v, 9459 int position, long id) { 9460 // Rather than sending the message right away, send it 9461 // after the page regains focus. 9462 mListBoxMessage = Message.obtain(null, 9463 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 9464 mListBoxDialog.dismiss(); 9465 mListBoxDialog = null; 9466 } 9467 }); 9468 if (mSelection != -1) { 9469 listView.setSelection(mSelection); 9470 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 9471 listView.setItemChecked(mSelection, true); 9472 DataSetObserver observer = new SingleDataSetObserver( 9473 adapter.getItemId(mSelection), listView, adapter); 9474 adapter.registerDataSetObserver(observer); 9475 } 9476 } 9477 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 9478 @Override 9479 public void onCancel(DialogInterface dialog) { 9480 mWebViewCore.sendMessage( 9481 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9482 mListBoxDialog = null; 9483 } 9484 }); 9485 mListBoxDialog.show(); 9486 } 9487 } 9488 9489 private Message mListBoxMessage; 9490 9491 /* 9492 * Request a dropdown menu for a listbox with multiple selection. 9493 * 9494 * @param array Labels for the listbox. 9495 * @param enabledArray State for each element in the list. See static 9496 * integers in Container class. 9497 * @param selectedArray Which positions are initally selected. 9498 */ 9499 void requestListBox(String[] array, int[] enabledArray, int[] 9500 selectedArray) { 9501 mPrivateHandler.post( 9502 new InvokeListBox(array, enabledArray, selectedArray)); 9503 } 9504 9505 /* 9506 * Request a dropdown menu for a listbox with single selection or a single 9507 * <select> element. 9508 * 9509 * @param array Labels for the listbox. 9510 * @param enabledArray State for each element in the list. See static 9511 * integers in Container class. 9512 * @param selection Which position is initally selected. 9513 */ 9514 void requestListBox(String[] array, int[] enabledArray, int selection) { 9515 mPrivateHandler.post( 9516 new InvokeListBox(array, enabledArray, selection)); 9517 } 9518 9519 // called by JNI 9520 private void sendMoveFocus(int frame, int node) { 9521 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 9522 new WebViewCore.CursorData(frame, node, 0, 0)); 9523 } 9524 9525 // called by JNI 9526 private void sendMoveMouse(int frame, int node, int x, int y) { 9527 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 9528 new WebViewCore.CursorData(frame, node, x, y)); 9529 } 9530 9531 /* 9532 * Send a mouse move event to the webcore thread. 9533 * 9534 * @param removeFocus Pass true to remove the WebTextView, if present. 9535 * @param stopPaintingCaret Stop drawing the blinking caret if true. 9536 * called by JNI 9537 */ 9538 @SuppressWarnings("unused") 9539 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 9540 if (removeFocus) { 9541 clearTextEntry(); 9542 } 9543 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 9544 stopPaintingCaret ? 1 : 0, 0, 9545 cursorData()); 9546 } 9547 9548 /** 9549 * Called by JNI to send a message to the webcore thread that the user 9550 * touched the webpage. 9551 * @param touchGeneration Generation number of the touch, to ignore touches 9552 * after a new one has been generated. 9553 * @param frame Pointer to the frame holding the node that was touched. 9554 * @param node Pointer to the node touched. 9555 * @param x x-position of the touch. 9556 * @param y y-position of the touch. 9557 */ 9558 private void sendMotionUp(int touchGeneration, 9559 int frame, int node, int x, int y) { 9560 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 9561 touchUpData.mMoveGeneration = touchGeneration; 9562 touchUpData.mFrame = frame; 9563 touchUpData.mNode = node; 9564 touchUpData.mX = x; 9565 touchUpData.mY = y; 9566 touchUpData.mNativeLayer = nativeScrollableLayer( 9567 x, y, touchUpData.mNativeLayerRect, null); 9568 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 9569 } 9570 9571 9572 private int getScaledMaxXScroll() { 9573 int width; 9574 if (mHeightCanMeasure == false) { 9575 width = getViewWidth() / 4; 9576 } else { 9577 Rect visRect = new Rect(); 9578 calcOurVisibleRect(visRect); 9579 width = visRect.width() / 2; 9580 } 9581 // FIXME the divisor should be retrieved from somewhere 9582 return viewToContentX(width); 9583 } 9584 9585 private int getScaledMaxYScroll() { 9586 int height; 9587 if (mHeightCanMeasure == false) { 9588 height = getViewHeight() / 4; 9589 } else { 9590 Rect visRect = new Rect(); 9591 calcOurVisibleRect(visRect); 9592 height = visRect.height() / 2; 9593 } 9594 // FIXME the divisor should be retrieved from somewhere 9595 // the closest thing today is hard-coded into ScrollView.java 9596 // (from ScrollView.java, line 363) int maxJump = height/2; 9597 return Math.round(height * mZoomManager.getInvScale()); 9598 } 9599 9600 /** 9601 * Called by JNI to invalidate view 9602 */ 9603 private void viewInvalidate() { 9604 invalidate(); 9605 } 9606 9607 /** 9608 * Pass the key directly to the page. This assumes that 9609 * nativePageShouldHandleShiftAndArrows() returned true. 9610 */ 9611 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 9612 int keyEventAction; 9613 int eventHubAction; 9614 if (down) { 9615 keyEventAction = KeyEvent.ACTION_DOWN; 9616 eventHubAction = EventHub.KEY_DOWN; 9617 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 9618 } else { 9619 keyEventAction = KeyEvent.ACTION_UP; 9620 eventHubAction = EventHub.KEY_UP; 9621 } 9622 9623 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 9624 1, (metaState & KeyEvent.META_SHIFT_ON) 9625 | (metaState & KeyEvent.META_ALT_ON) 9626 | (metaState & KeyEvent.META_SYM_ON) 9627 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 9628 mWebViewCore.sendMessage(eventHubAction, event); 9629 } 9630 9631 // return true if the key was handled 9632 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 9633 long time) { 9634 if (mNativeClass == 0) { 9635 return false; 9636 } 9637 mInitialHitTestResult = null; 9638 mLastCursorTime = time; 9639 mLastCursorBounds = nativeGetCursorRingBounds(); 9640 boolean keyHandled 9641 = nativeMoveCursor(keyCode, count, noScroll) == false; 9642 if (DebugFlags.WEB_VIEW) { 9643 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 9644 + " mLastCursorTime=" + mLastCursorTime 9645 + " handled=" + keyHandled); 9646 } 9647 if (keyHandled == false) { 9648 return keyHandled; 9649 } 9650 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 9651 if (contentCursorRingBounds.isEmpty()) return keyHandled; 9652 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 9653 // set last touch so that context menu related functions will work 9654 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 9655 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 9656 if (mHeightCanMeasure == false) { 9657 return keyHandled; 9658 } 9659 Rect visRect = new Rect(); 9660 calcOurVisibleRect(visRect); 9661 Rect outset = new Rect(visRect); 9662 int maxXScroll = visRect.width() / 2; 9663 int maxYScroll = visRect.height() / 2; 9664 outset.inset(-maxXScroll, -maxYScroll); 9665 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 9666 return keyHandled; 9667 } 9668 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 9669 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 9670 maxXScroll); 9671 if (maxH > 0) { 9672 pinScrollBy(maxH, 0, true, 0); 9673 } else { 9674 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 9675 -maxXScroll); 9676 if (maxH < 0) { 9677 pinScrollBy(maxH, 0, true, 0); 9678 } 9679 } 9680 if (mLastCursorBounds.isEmpty()) return keyHandled; 9681 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 9682 return keyHandled; 9683 } 9684 if (DebugFlags.WEB_VIEW) { 9685 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 9686 + contentCursorRingBounds); 9687 } 9688 requestRectangleOnScreen(viewCursorRingBounds); 9689 return keyHandled; 9690 } 9691 9692 /** 9693 * @return Whether accessibility script has been injected. 9694 */ 9695 private boolean accessibilityScriptInjected() { 9696 // TODO: Maybe the injected script should announce its presence in 9697 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 9698 // will check that as one of the conditions it looks for 9699 return mAccessibilityScriptInjected; 9700 } 9701 9702 /** 9703 * Set the background color. It's white by default. Pass 9704 * zero to make the view transparent. 9705 * @param color the ARGB color described by Color.java 9706 */ 9707 @Override 9708 public void setBackgroundColor(int color) { 9709 mBackgroundColor = color; 9710 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 9711 } 9712 9713 /** 9714 * @deprecated This method is now obsolete. 9715 */ 9716 @Deprecated 9717 public void debugDump() { 9718 checkThread(); 9719 nativeDebugDump(); 9720 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 9721 } 9722 9723 /** 9724 * Draw the HTML page into the specified canvas. This call ignores any 9725 * view-specific zoom, scroll offset, or other changes. It does not draw 9726 * any view-specific chrome, such as progress or URL bars. 9727 * 9728 * @hide only needs to be accessible to Browser and testing 9729 */ 9730 public void drawPage(Canvas canvas) { 9731 calcOurContentVisibleRectF(mVisibleContentRect); 9732 nativeDraw(canvas, mVisibleContentRect, 0, 0, false); 9733 } 9734 9735 /** 9736 * Enable the communication b/t the webView and VideoViewProxy 9737 * 9738 * @hide only used by the Browser 9739 */ 9740 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 9741 mHTML5VideoViewProxy = proxy; 9742 } 9743 9744 /** 9745 * Set the time to wait between passing touches to WebCore. See also the 9746 * TOUCH_SENT_INTERVAL member for further discussion. 9747 * 9748 * @hide This is only used by the DRT test application. 9749 */ 9750 public void setTouchInterval(int interval) { 9751 mCurrentTouchInterval = interval; 9752 } 9753 9754 /** 9755 * Copy text into the clipboard. This is called indirectly from 9756 * WebViewCore. 9757 * @param text The text to put into the clipboard. 9758 */ 9759 private void copyToClipboard(String text) { 9760 ClipboardManager cm = (ClipboardManager)getContext() 9761 .getSystemService(Context.CLIPBOARD_SERVICE); 9762 ClipData clip = ClipData.newPlainText(getTitle(), text); 9763 cm.setPrimaryClip(clip); 9764 } 9765 9766 /** 9767 * Update our cache with updatedText. 9768 * @param updatedText The new text to put in our cache. 9769 * @hide 9770 */ 9771 protected void updateCachedTextfield(String updatedText) { 9772 // Also place our generation number so that when we look at the cache 9773 // we recognize that it is up to date. 9774 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 9775 } 9776 9777 /*package*/ void autoFillForm(int autoFillQueryId) { 9778 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 9779 } 9780 9781 /* package */ ViewManager getViewManager() { 9782 return mViewManager; 9783 } 9784 9785 private static void checkThread() { 9786 if (Looper.myLooper() != Looper.getMainLooper()) { 9787 Throwable throwable = new Throwable( 9788 "Warning: A WebView method was called on thread '" + 9789 Thread.currentThread().getName() + "'. " + 9790 "All WebView methods must be called on the UI thread. " + 9791 "Future versions of WebView may not support use on other threads."); 9792 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 9793 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 9794 } 9795 } 9796 9797 /** @hide send content invalidate */ 9798 protected void contentInvalidateAll() { 9799 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 9800 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 9801 } 9802 } 9803 9804 /** @hide call pageSwapCallback upon next page swap */ 9805 protected void registerPageSwapCallback() { 9806 nativeRegisterPageSwapCallback(mNativeClass); 9807 } 9808 9809 /** @hide discard all textures from tiles */ 9810 protected void discardAllTextures() { 9811 nativeDiscardAllTextures(); 9812 } 9813 9814 /** 9815 * Begin collecting per-tile profiling data 9816 * 9817 * @hide only used by profiling tests 9818 */ 9819 public void tileProfilingStart() { 9820 nativeTileProfilingStart(); 9821 } 9822 /** 9823 * Return per-tile profiling data 9824 * 9825 * @hide only used by profiling tests 9826 */ 9827 public float tileProfilingStop() { 9828 return nativeTileProfilingStop(); 9829 } 9830 9831 /** @hide only used by profiling tests */ 9832 public void tileProfilingClear() { 9833 nativeTileProfilingClear(); 9834 } 9835 /** @hide only used by profiling tests */ 9836 public int tileProfilingNumFrames() { 9837 return nativeTileProfilingNumFrames(); 9838 } 9839 /** @hide only used by profiling tests */ 9840 public int tileProfilingNumTilesInFrame(int frame) { 9841 return nativeTileProfilingNumTilesInFrame(frame); 9842 } 9843 /** @hide only used by profiling tests */ 9844 public int tileProfilingGetInt(int frame, int tile, String key) { 9845 return nativeTileProfilingGetInt(frame, tile, key); 9846 } 9847 /** @hide only used by profiling tests */ 9848 public float tileProfilingGetFloat(int frame, int tile, String key) { 9849 return nativeTileProfilingGetFloat(frame, tile, key); 9850 } 9851 9852 /** 9853 * Checks the focused content for an editable text field. This can be 9854 * text input or ContentEditable. 9855 * @return true if the focused item is an editable text field. 9856 */ 9857 boolean focusCandidateIsEditableText() { 9858 boolean isEditable = false; 9859 // TODO: reverse sDisableNavcache so that its name is positive 9860 boolean isNavcacheEnabled = !sDisableNavcache; 9861 if (isNavcacheEnabled) { 9862 isEditable = nativeFocusCandidateIsEditableText(mNativeClass); 9863 } else if (mFocusedNode != null) { 9864 isEditable = mFocusedNode.mEditable; 9865 } 9866 return isEditable; 9867 } 9868 9869 private native int nativeCacheHitFramePointer(); 9870 private native boolean nativeCacheHitIsPlugin(); 9871 private native Rect nativeCacheHitNodeBounds(); 9872 private native int nativeCacheHitNodePointer(); 9873 /* package */ native void nativeClearCursor(); 9874 private native void nativeCreate(int ptr, String drawableDir, boolean isHighEndGfx); 9875 private native int nativeCursorFramePointer(); 9876 private native Rect nativeCursorNodeBounds(); 9877 private native int nativeCursorNodePointer(); 9878 private native boolean nativeCursorIntersects(Rect visibleRect); 9879 private native boolean nativeCursorIsAnchor(); 9880 private native boolean nativeCursorIsTextInput(); 9881 private native Point nativeCursorPosition(); 9882 private native String nativeCursorText(); 9883 /** 9884 * Returns true if the native cursor node says it wants to handle key events 9885 * (ala plugins). This can only be called if mNativeClass is non-zero! 9886 */ 9887 private native boolean nativeCursorWantsKeyEvents(); 9888 private native void nativeDebugDump(); 9889 private native void nativeDestroy(); 9890 9891 /** 9892 * Draw the picture set with a background color and extra. If 9893 * "splitIfNeeded" is true and the return value is not 0, the return value 9894 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 9895 * native allocation can be freed. 9896 */ 9897 private native int nativeDraw(Canvas canvas, RectF visibleRect, 9898 int color, int extra, boolean splitIfNeeded); 9899 private native void nativeDumpDisplayTree(String urlOrNull); 9900 private native boolean nativeEvaluateLayersAnimations(int nativeInstance); 9901 private native int nativeGetDrawGLFunction(int nativeInstance, Rect rect, 9902 Rect viewRect, RectF visibleRect, float scale, int extras); 9903 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect, 9904 RectF visibleRect); 9905 private native void nativeExtendSelection(int x, int y); 9906 private native int nativeFindAll(String findLower, String findUpper, 9907 boolean sameAsLastSearch); 9908 private native void nativeFindNext(boolean forward); 9909 /* package */ native int nativeFocusCandidateFramePointer(); 9910 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 9911 /* package */ native boolean nativeFocusCandidateIsPassword(); 9912 private native boolean nativeFocusCandidateIsRtlText(); 9913 private native boolean nativeFocusCandidateIsTextInput(); 9914 private native boolean nativeFocusCandidateIsEditableText(int nativeClass); 9915 /* package */ native int nativeFocusCandidateMaxLength(); 9916 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 9917 /* package */ native boolean nativeFocusCandidateIsSpellcheck(); 9918 /* package */ native String nativeFocusCandidateName(); 9919 private native Rect nativeFocusCandidateNodeBounds(); 9920 /** 9921 * @return A Rect with left, top, right, bottom set to the corresponding 9922 * padding values in the focus candidate, if it is a textfield/textarea with 9923 * a style. Otherwise return null. This is not actually a rectangle; Rect 9924 * is being used to pass four integers. 9925 */ 9926 private native Rect nativeFocusCandidatePaddingRect(); 9927 /* package */ native int nativeFocusCandidatePointer(); 9928 private native String nativeFocusCandidateText(); 9929 /* package */ native float nativeFocusCandidateTextSize(); 9930 /* package */ native int nativeFocusCandidateLineHeight(); 9931 /** 9932 * Returns an integer corresponding to WebView.cpp::type. 9933 * See WebTextView.setType() 9934 */ 9935 private native int nativeFocusCandidateType(); 9936 private native int nativeFocusCandidateLayerId(); 9937 private native boolean nativeFocusIsPlugin(); 9938 private native Rect nativeFocusNodeBounds(); 9939 /* package */ native int nativeFocusNodePointer(); 9940 private native Rect nativeGetCursorRingBounds(); 9941 private native String nativeGetSelection(); 9942 private native boolean nativeHasCursorNode(); 9943 private native boolean nativeHasFocusNode(); 9944 private native void nativeHideCursor(); 9945 private native boolean nativeHitSelection(int x, int y); 9946 private native String nativeImageURI(int x, int y); 9947 private native Rect nativeLayerBounds(int layer); 9948 /* package */ native boolean nativeMoveCursorToNextTextInput(); 9949 // return true if the page has been scrolled 9950 private native boolean nativeMotionUp(int x, int y, int slop); 9951 // returns false if it handled the key 9952 private native boolean nativeMoveCursor(int keyCode, int count, 9953 boolean noScroll); 9954 private native int nativeMoveGeneration(); 9955 private native void nativeMoveSelection(int x, int y); 9956 /** 9957 * @return true if the page should get the shift and arrow keys, rather 9958 * than select text/navigation. 9959 * 9960 * If the focus is a plugin, or if the focus and cursor match and are 9961 * a contentEditable element, then the page should handle these keys. 9962 */ 9963 private native boolean nativePageShouldHandleShiftAndArrows(); 9964 private native boolean nativePointInNavCache(int x, int y, int slop); 9965 // Like many other of our native methods, you must make sure that 9966 // mNativeClass is not null before calling this method. 9967 private native void nativeResetSelection(); 9968 private native Point nativeSelectableText(); 9969 private native void nativeSelectAll(); 9970 private native void nativeSelectBestAt(Rect rect); 9971 private native void nativeSelectAt(int x, int y); 9972 private native int nativeSelectionX(); 9973 private native int nativeSelectionY(); 9974 private native int nativeFindIndex(); 9975 private native void nativeSetExtendSelection(); 9976 private native void nativeSetFindIsEmpty(); 9977 private native void nativeSetFindIsUp(boolean isUp); 9978 private native void nativeSetHeightCanMeasure(boolean measure); 9979 private native void nativeSetBaseLayer(int nativeInstance, 9980 int layer, Region invalRegion, 9981 boolean showVisualIndicator, boolean isPictureAfterFirstLayout, 9982 boolean registerPageSwapCallback); 9983 private native int nativeGetBaseLayer(); 9984 private native void nativeShowCursorTimed(); 9985 private native void nativeReplaceBaseContent(int content); 9986 private native void nativeCopyBaseContentToPicture(Picture pict); 9987 private native boolean nativeHasContent(); 9988 private native void nativeSetSelectionPointer(int nativeInstance, 9989 boolean set, float scale, int x, int y); 9990 private native boolean nativeStartSelection(int x, int y); 9991 private native void nativeStopGL(); 9992 private native Rect nativeSubtractLayers(Rect content); 9993 private native int nativeTextGeneration(); 9994 private native void nativeRegisterPageSwapCallback(int nativeInstance); 9995 private native void nativeDiscardAllTextures(); 9996 private native void nativeTileProfilingStart(); 9997 private native float nativeTileProfilingStop(); 9998 private native void nativeTileProfilingClear(); 9999 private native int nativeTileProfilingNumFrames(); 10000 private native int nativeTileProfilingNumTilesInFrame(int frame); 10001 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 10002 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 10003 // Never call this version except by updateCachedTextfield(String) - 10004 // we always want to pass in our generation number. 10005 private native void nativeUpdateCachedTextfield(String updatedText, 10006 int generation); 10007 private native boolean nativeWordSelection(int x, int y); 10008 // return NO_LEFTEDGE means failure. 10009 static final int NO_LEFTEDGE = -1; 10010 native int nativeGetBlockLeftEdge(int x, int y, float scale); 10011 10012 private native void nativeUseHardwareAccelSkia(boolean enabled); 10013 10014 // Returns a pointer to the scrollable LayerAndroid at the given point. 10015 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 10016 Rect scrollBounds); 10017 /** 10018 * Scroll the specified layer. 10019 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 10020 * @param newX Destination x position to which to scroll. 10021 * @param newY Destination y position to which to scroll. 10022 * @return True if the layer is successfully scrolled. 10023 */ 10024 private native boolean nativeScrollLayer(int layer, int newX, int newY); 10025 private native void nativeSetIsScrolling(boolean isScrolling); 10026 private native int nativeGetBackgroundColor(); 10027 native boolean nativeSetProperty(String key, String value); 10028 native String nativeGetProperty(String key); 10029 private native void nativeGetTextSelectionRegion(int instance, Region region); 10030 private native void nativeGetSelectionHandles(int instance, int[] handles); 10031 /** 10032 * See {@link ComponentCallbacks2} for the trim levels and descriptions 10033 */ 10034 private static native void nativeOnTrimMemory(int level); 10035 private static native void nativeSetPauseDrawing(int instance, boolean pause); 10036 private static native boolean nativeDisableNavcache(); 10037} 10038